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cba-pipeline-public
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cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/opt.h
|
/*
* AVOptions
* copyright (c) 2005 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_OPT_H
#define AVUTIL_OPT_H
/**
* @file
* AVOptions
*/
#include "rational.h"
#include "avutil.h"
#include "dict.h"
#include "log.h"
/**
* @defgroup avoptions AVOptions
* @ingroup lavu_data
* @{
* AVOptions provide a generic system to declare options on arbitrary structs
* ("objects"). An option can have a help text, a type and a range of possible
* values. Options may then be enumerated, read and written to.
*
* @section avoptions_implement Implementing AVOptions
* This section describes how to add AVOptions capabilities to a struct.
*
* All AVOptions-related information is stored in an AVClass. Therefore
* the first member of the struct should be a pointer to an AVClass describing it.
* The option field of the AVClass must be set to a NULL-terminated static array
* of AVOptions. Each AVOption must have a non-empty name, a type, a default
* value and for number-type AVOptions also a range of allowed values. It must
* also declare an offset in bytes from the start of the struct, where the field
* associated with this AVOption is located. Other fields in the AVOption struct
* should also be set when applicable, but are not required.
*
* The following example illustrates an AVOptions-enabled struct:
* @code
* typedef struct test_struct {
* AVClass *class;
* int int_opt;
* char *str_opt;
* uint8_t *bin_opt;
* int bin_len;
* } test_struct;
*
* static const AVOption options[] = {
* { "test_int", "This is a test option of int type.", offsetof(test_struct, int_opt),
* AV_OPT_TYPE_INT, { .i64 = -1 }, INT_MIN, INT_MAX },
* { "test_str", "This is a test option of string type.", offsetof(test_struct, str_opt),
* AV_OPT_TYPE_STRING },
* { "test_bin", "This is a test option of binary type.", offsetof(test_struct, bin_opt),
* AV_OPT_TYPE_BINARY },
* { NULL },
* };
*
* static const AVClass test_class = {
* .class_name = "test class",
* .item_name = av_default_item_name,
* .option = options,
* .version = LIBAVUTIL_VERSION_INT,
* };
* @endcode
*
* Next, when allocating your struct, you must ensure that the AVClass pointer
* is set to the correct value. Then, av_opt_set_defaults() can be called to
* initialize defaults. After that the struct is ready to be used with the
* AVOptions API.
*
* When cleaning up, you may use the av_opt_free() function to automatically
* free all the allocated string and binary options.
*
* Continuing with the above example:
*
* @code
* test_struct *alloc_test_struct(void)
* {
* test_struct *ret = av_malloc(sizeof(*ret));
* ret->class = &test_class;
* av_opt_set_defaults(ret);
* return ret;
* }
* void free_test_struct(test_struct **foo)
* {
* av_opt_free(*foo);
* av_freep(foo);
* }
* @endcode
*
* @subsection avoptions_implement_nesting Nesting
* It may happen that an AVOptions-enabled struct contains another
* AVOptions-enabled struct as a member (e.g. AVCodecContext in
* libavcodec exports generic options, while its priv_data field exports
* codec-specific options). In such a case, it is possible to set up the
* parent struct to export a child's options. To do that, simply
* implement AVClass.child_next() and AVClass.child_class_next() in the
* parent struct's AVClass.
* Assuming that the test_struct from above now also contains a
* child_struct field:
*
* @code
* typedef struct child_struct {
* AVClass *class;
* int flags_opt;
* } child_struct;
* static const AVOption child_opts[] = {
* { "test_flags", "This is a test option of flags type.",
* offsetof(child_struct, flags_opt), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX },
* { NULL },
* };
* static const AVClass child_class = {
* .class_name = "child class",
* .item_name = av_default_item_name,
* .option = child_opts,
* .version = LIBAVUTIL_VERSION_INT,
* };
*
* void *child_next(void *obj, void *prev)
* {
* test_struct *t = obj;
* if (!prev && t->child_struct)
* return t->child_struct;
* return NULL
* }
* const AVClass child_class_next(const AVClass *prev)
* {
* return prev ? NULL : &child_class;
* }
* @endcode
* Putting child_next() and child_class_next() as defined above into
* test_class will now make child_struct's options accessible through
* test_struct (again, proper setup as described above needs to be done on
* child_struct right after it is created).
*
* From the above example it might not be clear why both child_next()
* and child_class_next() are needed. The distinction is that child_next()
* iterates over actually existing objects, while child_class_next()
* iterates over all possible child classes. E.g. if an AVCodecContext
* was initialized to use a codec which has private options, then its
* child_next() will return AVCodecContext.priv_data and finish
* iterating. OTOH child_class_next() on AVCodecContext.av_class will
* iterate over all available codecs with private options.
*
* @subsection avoptions_implement_named_constants Named constants
* It is possible to create named constants for options. Simply set the unit
* field of the option the constants should apply to to a string and
* create the constants themselves as options of type AV_OPT_TYPE_CONST
* with their unit field set to the same string.
* Their default_val field should contain the value of the named
* constant.
* For example, to add some named constants for the test_flags option
* above, put the following into the child_opts array:
* @code
* { "test_flags", "This is a test option of flags type.",
* offsetof(child_struct, flags_opt), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX, "test_unit" },
* { "flag1", "This is a flag with value 16", 0, AV_OPT_TYPE_CONST, { .i64 = 16 }, 0, 0, "test_unit" },
* @endcode
*
* @section avoptions_use Using AVOptions
* This section deals with accessing options in an AVOptions-enabled struct.
* Such structs in FFmpeg are e.g. AVCodecContext in libavcodec or
* AVFormatContext in libavformat.
*
* @subsection avoptions_use_examine Examining AVOptions
* The basic functions for examining options are av_opt_next(), which iterates
* over all options defined for one object, and av_opt_find(), which searches
* for an option with the given name.
*
* The situation is more complicated with nesting. An AVOptions-enabled struct
* may have AVOptions-enabled children. Passing the AV_OPT_SEARCH_CHILDREN flag
* to av_opt_find() will make the function search children recursively.
*
* For enumerating there are basically two cases. The first is when you want to
* get all options that may potentially exist on the struct and its children
* (e.g. when constructing documentation). In that case you should call
* av_opt_child_class_next() recursively on the parent struct's AVClass. The
* second case is when you have an already initialized struct with all its
* children and you want to get all options that can be actually written or read
* from it. In that case you should call av_opt_child_next() recursively (and
* av_opt_next() on each result).
*
* @subsection avoptions_use_get_set Reading and writing AVOptions
* When setting options, you often have a string read directly from the
* user. In such a case, simply passing it to av_opt_set() is enough. For
* non-string type options, av_opt_set() will parse the string according to the
* option type.
*
* Similarly av_opt_get() will read any option type and convert it to a string
* which will be returned. Do not forget that the string is allocated, so you
* have to free it with av_free().
*
* In some cases it may be more convenient to put all options into an
* AVDictionary and call av_opt_set_dict() on it. A specific case of this
* are the format/codec open functions in lavf/lavc which take a dictionary
* filled with option as a parameter. This allows to set some options
* that cannot be set otherwise, since e.g. the input file format is not known
* before the file is actually opened.
*/
enum AVOptionType{
AV_OPT_TYPE_FLAGS,
AV_OPT_TYPE_INT,
AV_OPT_TYPE_INT64,
AV_OPT_TYPE_DOUBLE,
AV_OPT_TYPE_FLOAT,
AV_OPT_TYPE_STRING,
AV_OPT_TYPE_RATIONAL,
AV_OPT_TYPE_BINARY, ///< offset must point to a pointer immediately followed by an int for the length
AV_OPT_TYPE_CONST = 128,
AV_OPT_TYPE_IMAGE_SIZE = MKBETAG('S','I','Z','E'), ///< offset must point to two consecutive integers
AV_OPT_TYPE_PIXEL_FMT = MKBETAG('P','F','M','T'),
#if FF_API_OLD_AVOPTIONS
FF_OPT_TYPE_FLAGS = 0,
FF_OPT_TYPE_INT,
FF_OPT_TYPE_INT64,
FF_OPT_TYPE_DOUBLE,
FF_OPT_TYPE_FLOAT,
FF_OPT_TYPE_STRING,
FF_OPT_TYPE_RATIONAL,
FF_OPT_TYPE_BINARY, ///< offset must point to a pointer immediately followed by an int for the length
FF_OPT_TYPE_CONST=128,
#endif
};
/**
* AVOption
*/
typedef struct AVOption {
const char *name;
/**
* short English help text
* @todo What about other languages?
*/
const char *help;
/**
* The offset relative to the context structure where the option
* value is stored. It should be 0 for named constants.
*/
int offset;
enum AVOptionType type;
/**
* the default value for scalar options
*/
union {
int64_t i64;
double dbl;
const char *str;
/* TODO those are unused now */
AVRational q;
} default_val;
double min; ///< minimum valid value for the option
double max; ///< maximum valid value for the option
int flags;
#define AV_OPT_FLAG_ENCODING_PARAM 1 ///< a generic parameter which can be set by the user for muxing or encoding
#define AV_OPT_FLAG_DECODING_PARAM 2 ///< a generic parameter which can be set by the user for demuxing or decoding
#define AV_OPT_FLAG_METADATA 4 ///< some data extracted or inserted into the file like title, comment, ...
#define AV_OPT_FLAG_AUDIO_PARAM 8
#define AV_OPT_FLAG_VIDEO_PARAM 16
#define AV_OPT_FLAG_SUBTITLE_PARAM 32
#define AV_OPT_FLAG_FILTERING_PARAM (1<<16) ///< a generic parameter which can be set by the user for filtering
//FIXME think about enc-audio, ... style flags
/**
* The logical unit to which the option belongs. Non-constant
* options and corresponding named constants share the same
* unit. May be NULL.
*/
const char *unit;
} AVOption;
#if FF_API_FIND_OPT
/**
* Look for an option in obj. Look only for the options which
* have the flags set as specified in mask and flags (that is,
* for which it is the case that opt->flags & mask == flags).
*
* @param[in] obj a pointer to a struct whose first element is a
* pointer to an AVClass
* @param[in] name the name of the option to look for
* @param[in] unit the unit of the option to look for, or any if NULL
* @return a pointer to the option found, or NULL if no option
* has been found
*
* @deprecated use av_opt_find.
*/
attribute_deprecated
const AVOption *av_find_opt(void *obj, const char *name, const char *unit, int mask, int flags);
#endif
#if FF_API_OLD_AVOPTIONS
/**
* Set the field of obj with the given name to value.
*
* @param[in] obj A struct whose first element is a pointer to an
* AVClass.
* @param[in] name the name of the field to set
* @param[in] val The value to set. If the field is not of a string
* type, then the given string is parsed.
* SI postfixes and some named scalars are supported.
* If the field is of a numeric type, it has to be a numeric or named
* scalar. Behavior with more than one scalar and +- infix operators
* is undefined.
* If the field is of a flags type, it has to be a sequence of numeric
* scalars or named flags separated by '+' or '-'. Prefixing a flag
* with '+' causes it to be set without affecting the other flags;
* similarly, '-' unsets a flag.
* @param[out] o_out if non-NULL put here a pointer to the AVOption
* found
* @param alloc this parameter is currently ignored
* @return 0 if the value has been set, or an AVERROR code in case of
* error:
* AVERROR_OPTION_NOT_FOUND if no matching option exists
* AVERROR(ERANGE) if the value is out of range
* AVERROR(EINVAL) if the value is not valid
* @deprecated use av_opt_set()
*/
attribute_deprecated
int av_set_string3(void *obj, const char *name, const char *val, int alloc, const AVOption **o_out);
attribute_deprecated const AVOption *av_set_double(void *obj, const char *name, double n);
attribute_deprecated const AVOption *av_set_q(void *obj, const char *name, AVRational n);
attribute_deprecated const AVOption *av_set_int(void *obj, const char *name, int64_t n);
double av_get_double(void *obj, const char *name, const AVOption **o_out);
AVRational av_get_q(void *obj, const char *name, const AVOption **o_out);
int64_t av_get_int(void *obj, const char *name, const AVOption **o_out);
attribute_deprecated const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len);
attribute_deprecated const AVOption *av_next_option(void *obj, const AVOption *last);
#endif
/**
* Show the obj options.
*
* @param req_flags requested flags for the options to show. Show only the
* options for which it is opt->flags & req_flags.
* @param rej_flags rejected flags for the options to show. Show only the
* options for which it is !(opt->flags & req_flags).
* @param av_log_obj log context to use for showing the options
*/
int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags);
/**
* Set the values of all AVOption fields to their default values.
*
* @param s an AVOption-enabled struct (its first member must be a pointer to AVClass)
*/
void av_opt_set_defaults(void *s);
#if FF_API_OLD_AVOPTIONS
attribute_deprecated
void av_opt_set_defaults2(void *s, int mask, int flags);
#endif
/**
* Parse the key/value pairs list in opts. For each key/value pair
* found, stores the value in the field in ctx that is named like the
* key. ctx must be an AVClass context, storing is done using
* AVOptions.
*
* @param opts options string to parse, may be NULL
* @param key_val_sep a 0-terminated list of characters used to
* separate key from value
* @param pairs_sep a 0-terminated list of characters used to separate
* two pairs from each other
* @return the number of successfully set key/value pairs, or a negative
* value corresponding to an AVERROR code in case of error:
* AVERROR(EINVAL) if opts cannot be parsed,
* the error code issued by av_set_string3() if a key/value pair
* cannot be set
*/
int av_set_options_string(void *ctx, const char *opts,
const char *key_val_sep, const char *pairs_sep);
/**
* Free all string and binary options in obj.
*/
void av_opt_free(void *obj);
/**
* Check whether a particular flag is set in a flags field.
*
* @param field_name the name of the flag field option
* @param flag_name the name of the flag to check
* @return non-zero if the flag is set, zero if the flag isn't set,
* isn't of the right type, or the flags field doesn't exist.
*/
int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name);
/*
* Set all the options from a given dictionary on an object.
*
* @param obj a struct whose first element is a pointer to AVClass
* @param options options to process. This dictionary will be freed and replaced
* by a new one containing all options not found in obj.
* Of course this new dictionary needs to be freed by caller
* with av_dict_free().
*
* @return 0 on success, a negative AVERROR if some option was found in obj,
* but could not be set.
*
* @see av_dict_copy()
*/
int av_opt_set_dict(void *obj, struct AVDictionary **options);
/**
* @defgroup opt_eval_funcs Evaluating option strings
* @{
* This group of functions can be used to evaluate option strings
* and get numbers out of them. They do the same thing as av_opt_set(),
* except the result is written into the caller-supplied pointer.
*
* @param obj a struct whose first element is a pointer to AVClass.
* @param o an option for which the string is to be evaluated.
* @param val string to be evaluated.
* @param *_out value of the string will be written here.
*
* @return 0 on success, a negative number on failure.
*/
int av_opt_eval_flags (void *obj, const AVOption *o, const char *val, int *flags_out);
int av_opt_eval_int (void *obj, const AVOption *o, const char *val, int *int_out);
int av_opt_eval_int64 (void *obj, const AVOption *o, const char *val, int64_t *int64_out);
int av_opt_eval_float (void *obj, const AVOption *o, const char *val, float *float_out);
int av_opt_eval_double(void *obj, const AVOption *o, const char *val, double *double_out);
int av_opt_eval_q (void *obj, const AVOption *o, const char *val, AVRational *q_out);
/**
* @}
*/
#define AV_OPT_SEARCH_CHILDREN 0x0001 /**< Search in possible children of the
given object first. */
/**
* The obj passed to av_opt_find() is fake -- only a double pointer to AVClass
* instead of a required pointer to a struct containing AVClass. This is
* useful for searching for options without needing to allocate the corresponding
* object.
*/
#define AV_OPT_SEARCH_FAKE_OBJ 0x0002
/**
* Look for an option in an object. Consider only options which
* have all the specified flags set.
*
* @param[in] obj A pointer to a struct whose first element is a
* pointer to an AVClass.
* Alternatively a double pointer to an AVClass, if
* AV_OPT_SEARCH_FAKE_OBJ search flag is set.
* @param[in] name The name of the option to look for.
* @param[in] unit When searching for named constants, name of the unit
* it belongs to.
* @param opt_flags Find only options with all the specified flags set (AV_OPT_FLAG).
* @param search_flags A combination of AV_OPT_SEARCH_*.
*
* @return A pointer to the option found, or NULL if no option
* was found.
*
* @note Options found with AV_OPT_SEARCH_CHILDREN flag may not be settable
* directly with av_set_string3(). Use special calls which take an options
* AVDictionary (e.g. avformat_open_input()) to set options found with this
* flag.
*/
const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
int opt_flags, int search_flags);
/**
* Look for an option in an object. Consider only options which
* have all the specified flags set.
*
* @param[in] obj A pointer to a struct whose first element is a
* pointer to an AVClass.
* Alternatively a double pointer to an AVClass, if
* AV_OPT_SEARCH_FAKE_OBJ search flag is set.
* @param[in] name The name of the option to look for.
* @param[in] unit When searching for named constants, name of the unit
* it belongs to.
* @param opt_flags Find only options with all the specified flags set (AV_OPT_FLAG).
* @param search_flags A combination of AV_OPT_SEARCH_*.
* @param[out] target_obj if non-NULL, an object to which the option belongs will be
* written here. It may be different from obj if AV_OPT_SEARCH_CHILDREN is present
* in search_flags. This parameter is ignored if search_flags contain
* AV_OPT_SEARCH_FAKE_OBJ.
*
* @return A pointer to the option found, or NULL if no option
* was found.
*/
const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,
int opt_flags, int search_flags, void **target_obj);
/**
* Iterate over all AVOptions belonging to obj.
*
* @param obj an AVOptions-enabled struct or a double pointer to an
* AVClass describing it.
* @param prev result of the previous call to av_opt_next() on this object
* or NULL
* @return next AVOption or NULL
*/
const AVOption *av_opt_next(void *obj, const AVOption *prev);
/**
* Iterate over AVOptions-enabled children of obj.
*
* @param prev result of a previous call to this function or NULL
* @return next AVOptions-enabled child or NULL
*/
void *av_opt_child_next(void *obj, void *prev);
/**
* Iterate over potential AVOptions-enabled children of parent.
*
* @param prev result of a previous call to this function or NULL
* @return AVClass corresponding to next potential child or NULL
*/
const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev);
/**
* @defgroup opt_set_funcs Option setting functions
* @{
* Those functions set the field of obj with the given name to value.
*
* @param[in] obj A struct whose first element is a pointer to an AVClass.
* @param[in] name the name of the field to set
* @param[in] val The value to set. In case of av_opt_set() if the field is not
* of a string type, then the given string is parsed.
* SI postfixes and some named scalars are supported.
* If the field is of a numeric type, it has to be a numeric or named
* scalar. Behavior with more than one scalar and +- infix operators
* is undefined.
* If the field is of a flags type, it has to be a sequence of numeric
* scalars or named flags separated by '+' or '-'. Prefixing a flag
* with '+' causes it to be set without affecting the other flags;
* similarly, '-' unsets a flag.
* @param search_flags flags passed to av_opt_find2. I.e. if AV_OPT_SEARCH_CHILDREN
* is passed here, then the option may be set on a child of obj.
*
* @return 0 if the value has been set, or an AVERROR code in case of
* error:
* AVERROR_OPTION_NOT_FOUND if no matching option exists
* AVERROR(ERANGE) if the value is out of range
* AVERROR(EINVAL) if the value is not valid
*/
int av_opt_set (void *obj, const char *name, const char *val, int search_flags);
int av_opt_set_int (void *obj, const char *name, int64_t val, int search_flags);
int av_opt_set_double(void *obj, const char *name, double val, int search_flags);
int av_opt_set_q (void *obj, const char *name, AVRational val, int search_flags);
int av_opt_set_bin (void *obj, const char *name, const uint8_t *val, int size, int search_flags);
/**
* @}
*/
/**
* @defgroup opt_get_funcs Option getting functions
* @{
* Those functions get a value of the option with the given name from an object.
*
* @param[in] obj a struct whose first element is a pointer to an AVClass.
* @param[in] name name of the option to get.
* @param[in] search_flags flags passed to av_opt_find2. I.e. if AV_OPT_SEARCH_CHILDREN
* is passed here, then the option may be found in a child of obj.
* @param[out] out_val value of the option will be written here
* @return 0 on success, a negative error code otherwise
*/
/**
* @note the returned string will av_malloc()ed and must be av_free()ed by the caller
*/
int av_opt_get (void *obj, const char *name, int search_flags, uint8_t **out_val);
int av_opt_get_int (void *obj, const char *name, int search_flags, int64_t *out_val);
int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val);
int av_opt_get_q (void *obj, const char *name, int search_flags, AVRational *out_val);
/**
* @}
*/
/**
* Gets a pointer to the requested field in a struct.
* This function allows accessing a struct even when its fields are moved or
* renamed since the application making the access has been compiled,
*
* @returns a pointer to the field, it can be cast to the correct type and read
* or written to.
*/
void *av_opt_ptr(const AVClass *avclass, void *obj, const char *name);
/**
* @}
*/
#endif /* AVUTIL_OPT_H */
| 24,899 | 39.953947 | 124 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/bswap.h
|
/*
* copyright (c) 2006 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* byte swapping routines
*/
#ifndef AVUTIL_BSWAP_H
#define AVUTIL_BSWAP_H
#include <stdint.h>
#include "libavutil/avconfig.h"
#include "attributes.h"
#ifdef HAVE_AV_CONFIG_H
#include "config.h"
#if ARCH_ARM
# include "arm/bswap.h"
#elif ARCH_AVR32
# include "avr32/bswap.h"
#elif ARCH_BFIN
# include "bfin/bswap.h"
#elif ARCH_SH4
# include "sh4/bswap.h"
#elif ARCH_X86
# include "x86/bswap.h"
#endif
#endif /* HAVE_AV_CONFIG_H */
#define AV_BSWAP16C(x) (((x) << 8 & 0xff00) | ((x) >> 8 & 0x00ff))
#define AV_BSWAP32C(x) (AV_BSWAP16C(x) << 16 | AV_BSWAP16C((x) >> 16))
#define AV_BSWAP64C(x) (AV_BSWAP32C(x) << 32 | AV_BSWAP32C((x) >> 32))
#define AV_BSWAPC(s, x) AV_BSWAP##s##C(x)
#ifndef av_bswap16
static av_always_inline av_const uint16_t av_bswap16(uint16_t x)
{
x= (x>>8) | (x<<8);
return x;
}
#endif
#ifndef av_bswap32
static av_always_inline av_const uint32_t av_bswap32(uint32_t x)
{
return AV_BSWAP32C(x);
}
#endif
#ifndef av_bswap64
static inline uint64_t av_const av_bswap64(uint64_t x)
{
return (uint64_t)av_bswap32(x) << 32 | av_bswap32(x >> 32);
}
#endif
// be2ne ... big-endian to native-endian
// le2ne ... little-endian to native-endian
#if AV_HAVE_BIGENDIAN
#define av_be2ne16(x) (x)
#define av_be2ne32(x) (x)
#define av_be2ne64(x) (x)
#define av_le2ne16(x) av_bswap16(x)
#define av_le2ne32(x) av_bswap32(x)
#define av_le2ne64(x) av_bswap64(x)
#define AV_BE2NEC(s, x) (x)
#define AV_LE2NEC(s, x) AV_BSWAPC(s, x)
#else
#define av_be2ne16(x) av_bswap16(x)
#define av_be2ne32(x) av_bswap32(x)
#define av_be2ne64(x) av_bswap64(x)
#define av_le2ne16(x) (x)
#define av_le2ne32(x) (x)
#define av_le2ne64(x) (x)
#define AV_BE2NEC(s, x) AV_BSWAPC(s, x)
#define AV_LE2NEC(s, x) (x)
#endif
#define AV_BE2NE16C(x) AV_BE2NEC(16, x)
#define AV_BE2NE32C(x) AV_BE2NEC(32, x)
#define AV_BE2NE64C(x) AV_BE2NEC(64, x)
#define AV_LE2NE16C(x) AV_LE2NEC(16, x)
#define AV_LE2NE32C(x) AV_LE2NEC(32, x)
#define AV_LE2NE64C(x) AV_LE2NEC(64, x)
#endif /* AVUTIL_BSWAP_H */
| 2,852 | 24.936364 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/attributes.h
|
/*
* copyright (c) 2006 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Macro definitions for various function/variable attributes
*/
#ifndef AVUTIL_ATTRIBUTES_H
#define AVUTIL_ATTRIBUTES_H
#ifdef __GNUC__
# define AV_GCC_VERSION_AT_LEAST(x,y) (__GNUC__ > x || __GNUC__ == x && __GNUC_MINOR__ >= y)
#else
# define AV_GCC_VERSION_AT_LEAST(x,y) 0
#endif
#ifndef av_always_inline
#if AV_GCC_VERSION_AT_LEAST(3,1)
# define av_always_inline __attribute__((always_inline)) inline
#elif defined(_MSC_VER)
# define av_always_inline __forceinline
#else
# define av_always_inline inline
#endif
#endif
#ifndef av_extern_inline
#if defined(__ICL) && __ICL >= 1210 || defined(__GNUC_STDC_INLINE__)
# define av_extern_inline extern inline
#else
# define av_extern_inline inline
#endif
#endif
#if AV_GCC_VERSION_AT_LEAST(3,1)
# define av_noinline __attribute__((noinline))
#else
# define av_noinline
#endif
#if AV_GCC_VERSION_AT_LEAST(3,1)
# define av_pure __attribute__((pure))
#else
# define av_pure
#endif
#ifndef av_restrict
#define av_restrict restrict
#endif
#if AV_GCC_VERSION_AT_LEAST(2,6)
# define av_const __attribute__((const))
#else
# define av_const
#endif
#if AV_GCC_VERSION_AT_LEAST(4,3)
# define av_cold __attribute__((cold))
#else
# define av_cold
#endif
#if AV_GCC_VERSION_AT_LEAST(4,1)
# define av_flatten __attribute__((flatten))
#else
# define av_flatten
#endif
#if AV_GCC_VERSION_AT_LEAST(3,1)
# define attribute_deprecated __attribute__((deprecated))
#else
# define attribute_deprecated
#endif
/**
* Disable warnings about deprecated features
* This is useful for sections of code kept for backward compatibility and
* scheduled for removal.
*/
#ifndef AV_NOWARN_DEPRECATED
#if AV_GCC_VERSION_AT_LEAST(4,6)
# define AV_NOWARN_DEPRECATED(code) \
_Pragma("GCC diagnostic push") \
_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") \
code \
_Pragma("GCC diagnostic pop")
#else
# define AV_NOWARN_DEPRECATED(code) code
#endif
#endif
#if defined(__GNUC__)
# define av_unused __attribute__((unused))
#else
# define av_unused
#endif
/**
* Mark a variable as used and prevent the compiler from optimizing it
* away. This is useful for variables accessed only from inline
* assembler without the compiler being aware.
*/
#if AV_GCC_VERSION_AT_LEAST(3,1)
# define av_used __attribute__((used))
#else
# define av_used
#endif
#if AV_GCC_VERSION_AT_LEAST(3,3)
# define av_alias __attribute__((may_alias))
#else
# define av_alias
#endif
#if defined(__GNUC__) && !defined(__INTEL_COMPILER) && !defined(__clang__)
# define av_uninit(x) x=x
#else
# define av_uninit(x) x
#endif
#ifdef __GNUC__
# define av_builtin_constant_p __builtin_constant_p
# define av_printf_format(fmtpos, attrpos) __attribute__((__format__(__printf__, fmtpos, attrpos)))
#else
# define av_builtin_constant_p(x) 0
# define av_printf_format(fmtpos, attrpos)
#endif
#if AV_GCC_VERSION_AT_LEAST(2,5)
# define av_noreturn __attribute__((noreturn))
#else
# define av_noreturn
#endif
#endif /* AVUTIL_ATTRIBUTES_H */
| 3,926 | 24.335484 | 102 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/lzo.h
|
/*
* LZO 1x decompression
* copyright (c) 2006 Reimar Doeffinger
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_LZO_H
#define AVUTIL_LZO_H
/**
* @defgroup lavu_lzo LZO
* @ingroup lavu_crypto
*
* @{
*/
#include <stdint.h>
/** @name Error flags returned by av_lzo1x_decode
* @{ */
/// end of the input buffer reached before decoding finished
#define AV_LZO_INPUT_DEPLETED 1
/// decoded data did not fit into output buffer
#define AV_LZO_OUTPUT_FULL 2
/// a reference to previously decoded data was wrong
#define AV_LZO_INVALID_BACKPTR 4
/// a non-specific error in the compressed bitstream
#define AV_LZO_ERROR 8
/** @} */
#define AV_LZO_INPUT_PADDING 8
#define AV_LZO_OUTPUT_PADDING 12
/**
* @brief Decodes LZO 1x compressed data.
* @param out output buffer
* @param outlen size of output buffer, number of bytes left are returned here
* @param in input buffer
* @param inlen size of input buffer, number of bytes left are returned here
* @return 0 on success, otherwise a combination of the error flags above
*
* Make sure all buffers are appropriately padded, in must provide
* AV_LZO_INPUT_PADDING, out must provide AV_LZO_OUTPUT_PADDING additional bytes.
*/
int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen);
/**
* @brief deliberately overlapping memcpy implementation
* @param dst destination buffer; must be padded with 12 additional bytes
* @param back how many bytes back we start (the initial size of the overlapping window), must be > 0
* @param cnt number of bytes to copy, must be >= 0
*
* cnt > back is valid, this will copy the bytes we just copied,
* thus creating a repeating pattern with a period length of back.
*/
void av_memcpy_backptr(uint8_t *dst, int back, int cnt);
/**
* @}
*/
#endif /* AVUTIL_LZO_H */
| 2,518 | 31.294872 | 101 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/pixfmt.h
|
/*
* copyright (c) 2006 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_PIXFMT_H
#define AVUTIL_PIXFMT_H
/**
* @file
* pixel format definitions
*
*/
#include "libavutil/avconfig.h"
#define AVPALETTE_SIZE 1024
#define AVPALETTE_COUNT 256
/**
* Pixel format.
*
* @note
* PIX_FMT_RGB32 is handled in an endian-specific manner. An RGBA
* color is put together as:
* (A << 24) | (R << 16) | (G << 8) | B
* This is stored as BGRA on little-endian CPU architectures and ARGB on
* big-endian CPUs.
*
* @par
* When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
* image data is stored in AVFrame.data[0]. The palette is transported in
* AVFrame.data[1], is 1024 bytes long (256 4-byte entries) and is
* formatted the same as in PIX_FMT_RGB32 described above (i.e., it is
* also endian-specific). Note also that the individual RGB palette
* components stored in AVFrame.data[1] should be in the range 0..255.
* This is important as many custom PAL8 video codecs that were designed
* to run on the IBM VGA graphics adapter use 6-bit palette components.
*
* @par
* For all the 8bit per pixel formats, an RGB32 palette is in data[1] like
* for pal8. This palette is filled in automatically by the function
* allocating the picture.
*
* @note
* make sure that all newly added big endian formats have pix_fmt&1==1
* and that all newly added little endian formats have pix_fmt&1==0
* this allows simpler detection of big vs little endian.
*/
enum PixelFormat {
PIX_FMT_NONE= -1,
PIX_FMT_YUV420P, ///< planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
PIX_FMT_YUYV422, ///< packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
PIX_FMT_RGB24, ///< packed RGB 8:8:8, 24bpp, RGBRGB...
PIX_FMT_BGR24, ///< packed RGB 8:8:8, 24bpp, BGRBGR...
PIX_FMT_YUV422P, ///< planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
PIX_FMT_YUV444P, ///< planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
PIX_FMT_YUV410P, ///< planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
PIX_FMT_YUV411P, ///< planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
PIX_FMT_GRAY8, ///< Y , 8bpp
PIX_FMT_MONOWHITE, ///< Y , 1bpp, 0 is white, 1 is black, in each byte pixels are ordered from the msb to the lsb
PIX_FMT_MONOBLACK, ///< Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb
PIX_FMT_PAL8, ///< 8 bit with PIX_FMT_RGB32 palette
PIX_FMT_YUVJ420P, ///< planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV420P and setting color_range
PIX_FMT_YUVJ422P, ///< planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV422P and setting color_range
PIX_FMT_YUVJ444P, ///< planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV444P and setting color_range
PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing
PIX_FMT_XVMC_MPEG2_IDCT,
PIX_FMT_UYVY422, ///< packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
PIX_FMT_UYYVYY411, ///< packed YUV 4:1:1, 12bpp, Cb Y0 Y1 Cr Y2 Y3
PIX_FMT_BGR8, ///< packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb)
PIX_FMT_BGR4, ///< packed RGB 1:2:1 bitstream, 4bpp, (msb)1B 2G 1R(lsb), a byte contains two pixels, the first pixel in the byte is the one composed by the 4 msb bits
PIX_FMT_BGR4_BYTE, ///< packed RGB 1:2:1, 8bpp, (msb)1B 2G 1R(lsb)
PIX_FMT_RGB8, ///< packed RGB 3:3:2, 8bpp, (msb)2R 3G 3B(lsb)
PIX_FMT_RGB4, ///< packed RGB 1:2:1 bitstream, 4bpp, (msb)1R 2G 1B(lsb), a byte contains two pixels, the first pixel in the byte is the one composed by the 4 msb bits
PIX_FMT_RGB4_BYTE, ///< packed RGB 1:2:1, 8bpp, (msb)1R 2G 1B(lsb)
PIX_FMT_NV12, ///< planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (first byte U and the following byte V)
PIX_FMT_NV21, ///< as above, but U and V bytes are swapped
PIX_FMT_ARGB, ///< packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
PIX_FMT_RGBA, ///< packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
PIX_FMT_ABGR, ///< packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
PIX_FMT_BGRA, ///< packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
PIX_FMT_GRAY16BE, ///< Y , 16bpp, big-endian
PIX_FMT_GRAY16LE, ///< Y , 16bpp, little-endian
PIX_FMT_YUV440P, ///< planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
PIX_FMT_YUVJ440P, ///< planar YUV 4:4:0 full scale (JPEG), deprecated in favor of PIX_FMT_YUV440P and setting color_range
PIX_FMT_YUVA420P, ///< planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
PIX_FMT_VDPAU_H264,///< H.264 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers
PIX_FMT_VDPAU_MPEG1,///< MPEG-1 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers
PIX_FMT_VDPAU_MPEG2,///< MPEG-2 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers
PIX_FMT_VDPAU_WMV3,///< WMV3 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers
PIX_FMT_VDPAU_VC1, ///< VC-1 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers
PIX_FMT_RGB48BE, ///< packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as big-endian
PIX_FMT_RGB48LE, ///< packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as little-endian
PIX_FMT_RGB565BE, ///< packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), big-endian
PIX_FMT_RGB565LE, ///< packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), little-endian
PIX_FMT_RGB555BE, ///< packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), big-endian, most significant bit to 0
PIX_FMT_RGB555LE, ///< packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), little-endian, most significant bit to 0
PIX_FMT_BGR565BE, ///< packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), big-endian
PIX_FMT_BGR565LE, ///< packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), little-endian
PIX_FMT_BGR555BE, ///< packed BGR 5:5:5, 16bpp, (msb)1A 5B 5G 5R(lsb), big-endian, most significant bit to 1
PIX_FMT_BGR555LE, ///< packed BGR 5:5:5, 16bpp, (msb)1A 5B 5G 5R(lsb), little-endian, most significant bit to 1
PIX_FMT_VAAPI_MOCO, ///< HW acceleration through VA API at motion compensation entry-point, Picture.data[3] contains a vaapi_render_state struct which contains macroblocks as well as various fields extracted from headers
PIX_FMT_VAAPI_IDCT, ///< HW acceleration through VA API at IDCT entry-point, Picture.data[3] contains a vaapi_render_state struct which contains fields extracted from headers
PIX_FMT_VAAPI_VLD, ///< HW decoding through VA API, Picture.data[3] contains a vaapi_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers
PIX_FMT_YUV420P16LE, ///< planar YUV 4:2:0, 24bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
PIX_FMT_YUV420P16BE, ///< planar YUV 4:2:0, 24bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
PIX_FMT_YUV422P16LE, ///< planar YUV 4:2:2, 32bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
PIX_FMT_YUV422P16BE, ///< planar YUV 4:2:2, 32bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
PIX_FMT_YUV444P16LE, ///< planar YUV 4:4:4, 48bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
PIX_FMT_YUV444P16BE, ///< planar YUV 4:4:4, 48bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
PIX_FMT_VDPAU_MPEG4, ///< MPEG4 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers
PIX_FMT_DXVA2_VLD, ///< HW decoding through DXVA2, Picture.data[3] contains a LPDIRECT3DSURFACE9 pointer
PIX_FMT_RGB444LE, ///< packed RGB 4:4:4, 16bpp, (msb)4A 4R 4G 4B(lsb), little-endian, most significant bits to 0
PIX_FMT_RGB444BE, ///< packed RGB 4:4:4, 16bpp, (msb)4A 4R 4G 4B(lsb), big-endian, most significant bits to 0
PIX_FMT_BGR444LE, ///< packed BGR 4:4:4, 16bpp, (msb)4A 4B 4G 4R(lsb), little-endian, most significant bits to 1
PIX_FMT_BGR444BE, ///< packed BGR 4:4:4, 16bpp, (msb)4A 4B 4G 4R(lsb), big-endian, most significant bits to 1
PIX_FMT_GRAY8A, ///< 8bit gray, 8bit alpha
PIX_FMT_BGR48BE, ///< packed RGB 16:16:16, 48bpp, 16B, 16G, 16R, the 2-byte value for each R/G/B component is stored as big-endian
PIX_FMT_BGR48LE, ///< packed RGB 16:16:16, 48bpp, 16B, 16G, 16R, the 2-byte value for each R/G/B component is stored as little-endian
//the following 10 formats have the disadvantage of needing 1 format for each bit depth, thus
//If you want to support multiple bit depths, then using PIX_FMT_YUV420P16* with the bpp stored separately
//is better
PIX_FMT_YUV420P9BE, ///< planar YUV 4:2:0, 13.5bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
PIX_FMT_YUV420P9LE, ///< planar YUV 4:2:0, 13.5bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
PIX_FMT_YUV420P10BE,///< planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
PIX_FMT_YUV420P10LE,///< planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
PIX_FMT_YUV422P10BE,///< planar YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
PIX_FMT_YUV422P10LE,///< planar YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
PIX_FMT_YUV444P9BE, ///< planar YUV 4:4:4, 27bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
PIX_FMT_YUV444P9LE, ///< planar YUV 4:4:4, 27bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
PIX_FMT_YUV444P10BE,///< planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
PIX_FMT_YUV444P10LE,///< planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
PIX_FMT_YUV422P9BE, ///< planar YUV 4:2:2, 18bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
PIX_FMT_YUV422P9LE, ///< planar YUV 4:2:2, 18bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
PIX_FMT_VDA_VLD, ///< hardware decoding through VDA
#ifdef AV_PIX_FMT_ABI_GIT_MASTER
PIX_FMT_RGBA64BE, ///< packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is stored as big-endian
PIX_FMT_RGBA64LE, ///< packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is stored as little-endian
PIX_FMT_BGRA64BE, ///< packed RGBA 16:16:16:16, 64bpp, 16B, 16G, 16R, 16A, the 2-byte value for each R/G/B/A component is stored as big-endian
PIX_FMT_BGRA64LE, ///< packed RGBA 16:16:16:16, 64bpp, 16B, 16G, 16R, 16A, the 2-byte value for each R/G/B/A component is stored as little-endian
#endif
PIX_FMT_GBRP, ///< planar GBR 4:4:4 24bpp
PIX_FMT_GBRP9BE, ///< planar GBR 4:4:4 27bpp, big endian
PIX_FMT_GBRP9LE, ///< planar GBR 4:4:4 27bpp, little endian
PIX_FMT_GBRP10BE, ///< planar GBR 4:4:4 30bpp, big endian
PIX_FMT_GBRP10LE, ///< planar GBR 4:4:4 30bpp, little endian
PIX_FMT_GBRP16BE, ///< planar GBR 4:4:4 48bpp, big endian
PIX_FMT_GBRP16LE, ///< planar GBR 4:4:4 48bpp, little endian
#ifndef AV_PIX_FMT_ABI_GIT_MASTER
PIX_FMT_RGBA64BE=0x123, ///< packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is stored as big-endian
PIX_FMT_RGBA64LE, ///< packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is stored as little-endian
PIX_FMT_BGRA64BE, ///< packed RGBA 16:16:16:16, 64bpp, 16B, 16G, 16R, 16A, the 2-byte value for each R/G/B/A component is stored as big-endian
PIX_FMT_BGRA64LE, ///< packed RGBA 16:16:16:16, 64bpp, 16B, 16G, 16R, 16A, the 2-byte value for each R/G/B/A component is stored as little-endian
#endif
PIX_FMT_0RGB=0x123+4, ///< packed RGB 8:8:8, 32bpp, 0RGB0RGB...
PIX_FMT_RGB0, ///< packed RGB 8:8:8, 32bpp, RGB0RGB0...
PIX_FMT_0BGR, ///< packed BGR 8:8:8, 32bpp, 0BGR0BGR...
PIX_FMT_BGR0, ///< packed BGR 8:8:8, 32bpp, BGR0BGR0...
PIX_FMT_YUVA444P, ///< planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
PIX_FMT_YUVA422P, ///< planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
PIX_FMT_YUV420P12BE, ///< planar YUV 4:2:0,18bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
PIX_FMT_YUV420P12LE, ///< planar YUV 4:2:0,18bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
PIX_FMT_YUV420P14BE, ///< planar YUV 4:2:0,21bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
PIX_FMT_YUV420P14LE, ///< planar YUV 4:2:0,21bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
PIX_FMT_YUV422P12BE, ///< planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
PIX_FMT_YUV422P12LE, ///< planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
PIX_FMT_YUV422P14BE, ///< planar YUV 4:2:2,28bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
PIX_FMT_YUV422P14LE, ///< planar YUV 4:2:2,28bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
PIX_FMT_YUV444P12BE, ///< planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
PIX_FMT_YUV444P12LE, ///< planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
PIX_FMT_YUV444P14BE, ///< planar YUV 4:4:4,42bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
PIX_FMT_YUV444P14LE, ///< planar YUV 4:4:4,42bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
PIX_FMT_GBRP12BE, ///< planar GBR 4:4:4 36bpp, big endian
PIX_FMT_GBRP12LE, ///< planar GBR 4:4:4 36bpp, little endian
PIX_FMT_GBRP14BE, ///< planar GBR 4:4:4 42bpp, big endian
PIX_FMT_GBRP14LE, ///< planar GBR 4:4:4 42bpp, little endian
PIX_FMT_NB, ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions
};
#define PIX_FMT_Y400A PIX_FMT_GRAY8A
#define PIX_FMT_GBR24P PIX_FMT_GBRP
#if AV_HAVE_BIGENDIAN
# define PIX_FMT_NE(be, le) PIX_FMT_##be
#else
# define PIX_FMT_NE(be, le) PIX_FMT_##le
#endif
#define PIX_FMT_RGB32 PIX_FMT_NE(ARGB, BGRA)
#define PIX_FMT_RGB32_1 PIX_FMT_NE(RGBA, ABGR)
#define PIX_FMT_BGR32 PIX_FMT_NE(ABGR, RGBA)
#define PIX_FMT_BGR32_1 PIX_FMT_NE(BGRA, ARGB)
#define PIX_FMT_0RGB32 PIX_FMT_NE(0RGB, BGR0)
#define PIX_FMT_0BGR32 PIX_FMT_NE(0BGR, RGB0)
#define PIX_FMT_GRAY16 PIX_FMT_NE(GRAY16BE, GRAY16LE)
#define PIX_FMT_RGB48 PIX_FMT_NE(RGB48BE, RGB48LE)
#define PIX_FMT_RGB565 PIX_FMT_NE(RGB565BE, RGB565LE)
#define PIX_FMT_RGB555 PIX_FMT_NE(RGB555BE, RGB555LE)
#define PIX_FMT_RGB444 PIX_FMT_NE(RGB444BE, RGB444LE)
#define PIX_FMT_BGR48 PIX_FMT_NE(BGR48BE, BGR48LE)
#define PIX_FMT_BGR565 PIX_FMT_NE(BGR565BE, BGR565LE)
#define PIX_FMT_BGR555 PIX_FMT_NE(BGR555BE, BGR555LE)
#define PIX_FMT_BGR444 PIX_FMT_NE(BGR444BE, BGR444LE)
#define PIX_FMT_YUV420P9 PIX_FMT_NE(YUV420P9BE , YUV420P9LE)
#define PIX_FMT_YUV422P9 PIX_FMT_NE(YUV422P9BE , YUV422P9LE)
#define PIX_FMT_YUV444P9 PIX_FMT_NE(YUV444P9BE , YUV444P9LE)
#define PIX_FMT_YUV420P10 PIX_FMT_NE(YUV420P10BE, YUV420P10LE)
#define PIX_FMT_YUV422P10 PIX_FMT_NE(YUV422P10BE, YUV422P10LE)
#define PIX_FMT_YUV444P10 PIX_FMT_NE(YUV444P10BE, YUV444P10LE)
#define PIX_FMT_YUV420P12 PIX_FMT_NE(YUV420P12BE, YUV420P12LE)
#define PIX_FMT_YUV422P12 PIX_FMT_NE(YUV422P12BE, YUV422P12LE)
#define PIX_FMT_YUV444P12 PIX_FMT_NE(YUV444P12BE, YUV444P12LE)
#define PIX_FMT_YUV420P14 PIX_FMT_NE(YUV420P14BE, YUV420P14LE)
#define PIX_FMT_YUV422P14 PIX_FMT_NE(YUV422P14BE, YUV422P14LE)
#define PIX_FMT_YUV444P14 PIX_FMT_NE(YUV444P14BE, YUV444P14LE)
#define PIX_FMT_YUV420P16 PIX_FMT_NE(YUV420P16BE, YUV420P16LE)
#define PIX_FMT_YUV422P16 PIX_FMT_NE(YUV422P16BE, YUV422P16LE)
#define PIX_FMT_YUV444P16 PIX_FMT_NE(YUV444P16BE, YUV444P16LE)
#define PIX_FMT_RGBA64 PIX_FMT_NE(RGBA64BE, RGBA64LE)
#define PIX_FMT_BGRA64 PIX_FMT_NE(BGRA64BE, BGRA64LE)
#define PIX_FMT_GBRP9 PIX_FMT_NE(GBRP9BE , GBRP9LE)
#define PIX_FMT_GBRP10 PIX_FMT_NE(GBRP10BE, GBRP10LE)
#define PIX_FMT_GBRP12 PIX_FMT_NE(GBRP12BE, GBRP12LE)
#define PIX_FMT_GBRP14 PIX_FMT_NE(GBRP14BE, GBRP14LE)
#define PIX_FMT_GBRP16 PIX_FMT_NE(GBRP16BE, GBRP16LE)
#endif /* AVUTIL_PIXFMT_H */
| 17,732 | 67.467181 | 224 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/log.h
|
/*
* copyright (c) 2006 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_LOG_H
#define AVUTIL_LOG_H
#include <stdarg.h>
#include "avutil.h"
#include "attributes.h"
typedef enum {
AV_CLASS_CATEGORY_NA = 0,
AV_CLASS_CATEGORY_INPUT,
AV_CLASS_CATEGORY_OUTPUT,
AV_CLASS_CATEGORY_MUXER,
AV_CLASS_CATEGORY_DEMUXER,
AV_CLASS_CATEGORY_ENCODER,
AV_CLASS_CATEGORY_DECODER,
AV_CLASS_CATEGORY_FILTER,
AV_CLASS_CATEGORY_BITSTREAM_FILTER,
AV_CLASS_CATEGORY_SWSCALER,
AV_CLASS_CATEGORY_SWRESAMPLER,
AV_CLASS_CATEGORY_NB, ///< not part of ABI/API
}AVClassCategory;
/**
* Describe the class of an AVClass context structure. That is an
* arbitrary struct of which the first field is a pointer to an
* AVClass struct (e.g. AVCodecContext, AVFormatContext etc.).
*/
typedef struct AVClass {
/**
* The name of the class; usually it is the same name as the
* context structure type to which the AVClass is associated.
*/
const char* class_name;
/**
* A pointer to a function which returns the name of a context
* instance ctx associated with the class.
*/
const char* (*item_name)(void* ctx);
/**
* a pointer to the first option specified in the class if any or NULL
*
* @see av_set_default_options()
*/
const struct AVOption *option;
/**
* LIBAVUTIL_VERSION with which this structure was created.
* This is used to allow fields to be added without requiring major
* version bumps everywhere.
*/
int version;
/**
* Offset in the structure where log_level_offset is stored.
* 0 means there is no such variable
*/
int log_level_offset_offset;
/**
* Offset in the structure where a pointer to the parent context for loging is stored.
* for example a decoder that uses eval.c could pass its AVCodecContext to eval as such
* parent context. And a av_log() implementation could then display the parent context
* can be NULL of course
*/
int parent_log_context_offset;
/**
* Return next AVOptions-enabled child or NULL
*/
void* (*child_next)(void *obj, void *prev);
/**
* Return an AVClass corresponding to next potential
* AVOptions-enabled child.
*
* The difference between child_next and this is that
* child_next iterates over _already existing_ objects, while
* child_class_next iterates over _all possible_ children.
*/
const struct AVClass* (*child_class_next)(const struct AVClass *prev);
/**
* Category used for visualization (like color)
* This is only set if the category is equal for all objects using this class.
* available since version (51 << 16 | 56 << 8 | 100)
*/
AVClassCategory category;
/**
* Callback to return the category.
* available since version (51 << 16 | 59 << 8 | 100)
*/
AVClassCategory (*get_category)(void* ctx);
} AVClass;
/* av_log API */
#define AV_LOG_QUIET -8
/**
* Something went really wrong and we will crash now.
*/
#define AV_LOG_PANIC 0
/**
* Something went wrong and recovery is not possible.
* For example, no header was found for a format which depends
* on headers or an illegal combination of parameters is used.
*/
#define AV_LOG_FATAL 8
/**
* Something went wrong and cannot losslessly be recovered.
* However, not all future data is affected.
*/
#define AV_LOG_ERROR 16
/**
* Something somehow does not look correct. This may or may not
* lead to problems. An example would be the use of '-vstrict -2'.
*/
#define AV_LOG_WARNING 24
#define AV_LOG_INFO 32
#define AV_LOG_VERBOSE 40
/**
* Stuff which is only useful for libav* developers.
*/
#define AV_LOG_DEBUG 48
#define AV_LOG_MAX_OFFSET (AV_LOG_DEBUG - AV_LOG_QUIET)
/**
* Send the specified message to the log if the level is less than or equal
* to the current av_log_level. By default, all logging messages are sent to
* stderr. This behavior can be altered by setting a different av_vlog callback
* function.
*
* @param avcl A pointer to an arbitrary struct of which the first field is a
* pointer to an AVClass struct.
* @param level The importance level of the message, lower values signifying
* higher importance.
* @param fmt The format string (printf-compatible) that specifies how
* subsequent arguments are converted to output.
* @see av_vlog
*/
void av_log(void *avcl, int level, const char *fmt, ...) av_printf_format(3, 4);
void av_vlog(void *avcl, int level, const char *fmt, va_list);
int av_log_get_level(void);
void av_log_set_level(int);
void av_log_set_callback(void (*)(void*, int, const char*, va_list));
void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl);
const char* av_default_item_name(void* ctx);
AVClassCategory av_default_get_category(void *ptr);
/**
* Format a line of log the same way as the default callback.
* @param line buffer to receive the formated line
* @param line_size size of the buffer
* @param print_prefix used to store whether the prefix must be printed;
* must point to a persistent integer initially set to 1
*/
void av_log_format_line(void *ptr, int level, const char *fmt, va_list vl,
char *line, int line_size, int *print_prefix);
/**
* av_dlog macros
* Useful to print debug messages that shouldn't get compiled in normally.
*/
#ifdef DEBUG
# define av_dlog(pctx, ...) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__)
#else
# define av_dlog(pctx, ...) do { if (0) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__); } while (0)
#endif
/**
* Skip repeated messages, this requires the user app to use av_log() instead of
* (f)printf as the 2 would otherwise interfere and lead to
* "Last message repeated x times" messages below (f)printf messages with some
* bad luck.
* Also to receive the last, "last repeated" line if any, the user app must
* call av_log(NULL, AV_LOG_QUIET, "%s", ""); at the end
*/
#define AV_LOG_SKIP_REPEATED 1
void av_log_set_flags(int arg);
#endif /* AVUTIL_LOG_H */
| 6,880 | 31.154206 | 95 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/intfloat_readwrite.h
|
/*
* copyright (c) 2005 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_INTFLOAT_READWRITE_H
#define AVUTIL_INTFLOAT_READWRITE_H
#include <stdint.h>
#include "attributes.h"
/* IEEE 80 bits extended float */
typedef struct AVExtFloat {
uint8_t exponent[2];
uint8_t mantissa[8];
} AVExtFloat;
attribute_deprecated double av_int2dbl(int64_t v) av_const;
attribute_deprecated float av_int2flt(int32_t v) av_const;
attribute_deprecated double av_ext2dbl(const AVExtFloat ext) av_const;
attribute_deprecated int64_t av_dbl2int(double d) av_const;
attribute_deprecated int32_t av_flt2int(float d) av_const;
attribute_deprecated AVExtFloat av_dbl2ext(double d) av_const;
#endif /* AVUTIL_INTFLOAT_READWRITE_H */
| 1,488 | 35.317073 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/avassert.h
|
/*
* copyright (c) 2010 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* simple assert() macros that are a bit more flexible than ISO C assert().
* @author Michael Niedermayer <[email protected]>
*/
#ifndef AVUTIL_AVASSERT_H
#define AVUTIL_AVASSERT_H
#include <stdlib.h>
#include "avutil.h"
#include "log.h"
/**
* assert() equivalent, that is always enabled.
*/
#define av_assert0(cond) do { \
if (!(cond)) { \
av_log(NULL, AV_LOG_FATAL, "Assertion %s failed at %s:%d\n", \
AV_STRINGIFY(cond), __FILE__, __LINE__); \
abort(); \
} \
} while (0)
/**
* assert() equivalent, that does not lie in speed critical code.
* These asserts() thus can be enabled without fearing speedloss.
*/
#if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 0
#define av_assert1(cond) av_assert0(cond)
#else
#define av_assert1(cond) ((void)0)
#endif
/**
* assert() equivalent, that does lie in speed critical code.
*/
#if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 1
#define av_assert2(cond) av_assert0(cond)
#else
#define av_assert2(cond) ((void)0)
#endif
#endif /* AVUTIL_AVASSERT_H */
| 2,113 | 30.552239 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/aes.h
|
/*
* copyright (c) 2007 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_AES_H
#define AVUTIL_AES_H
#include <stdint.h>
/**
* @defgroup lavu_aes AES
* @ingroup lavu_crypto
* @{
*/
extern const int av_aes_size;
struct AVAES;
/**
* Initialize an AVAES context.
* @param key_bits 128, 192 or 256
* @param decrypt 0 for encryption, 1 for decryption
*/
int av_aes_init(struct AVAES *a, const uint8_t *key, int key_bits, int decrypt);
/**
* Encrypt or decrypt a buffer using a previously initialized context.
* @param count number of 16 byte blocks
* @param dst destination array, can be equal to src
* @param src source array, can be equal to dst
* @param iv initialization vector for CBC mode, if NULL then ECB will be used
* @param decrypt 0 for encryption, 1 for decryption
*/
void av_aes_crypt(struct AVAES *a, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt);
/**
* @}
*/
#endif /* AVUTIL_AES_H */
| 1,715 | 28.586207 | 106 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/sha.h
|
/*
* Copyright (C) 2007 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_SHA_H
#define AVUTIL_SHA_H
#include <stdint.h>
/**
* @defgroup lavu_sha SHA
* @ingroup lavu_crypto
* @{
*/
extern const int av_sha_size;
struct AVSHA;
/**
* Initialize SHA-1 or SHA-2 hashing.
*
* @param context pointer to the function context (of size av_sha_size)
* @param bits number of bits in digest (SHA-1 - 160 bits, SHA-2 224 or 256 bits)
* @return zero if initialization succeeded, -1 otherwise
*/
int av_sha_init(struct AVSHA* context, int bits);
/**
* Update hash value.
*
* @param context hash function context
* @param data input data to update hash with
* @param len input data length
*/
void av_sha_update(struct AVSHA* context, const uint8_t* data, unsigned int len);
/**
* Finish hashing and output digest value.
*
* @param context hash function context
* @param digest buffer where output digest value is stored
*/
void av_sha_final(struct AVSHA* context, uint8_t *digest);
/**
* @}
*/
#endif /* AVUTIL_SHA_H */
| 1,822 | 26.208955 | 84 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/samplefmt.h
|
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_SAMPLEFMT_H
#define AVUTIL_SAMPLEFMT_H
#include <stdint.h>
#include "avutil.h"
#include "attributes.h"
/**
* Audio Sample Formats
*
* @par
* The data described by the sample format is always in native-endian order.
* Sample values can be expressed by native C types, hence the lack of a signed
* 24-bit sample format even though it is a common raw audio data format.
*
* @par
* The floating-point formats are based on full volume being in the range
* [-1.0, 1.0]. Any values outside this range are beyond full volume level.
*
* @par
* The data layout as used in av_samples_fill_arrays() and elsewhere in Libav
* (such as AVFrame in libavcodec) is as follows:
*
* For planar sample formats, each audio channel is in a separate data plane,
* and linesize is the buffer size, in bytes, for a single plane. All data
* planes must be the same size. For packed sample formats, only the first data
* plane is used, and samples for each channel are interleaved. In this case,
* linesize is the buffer size, in bytes, for the 1 plane.
*/
enum AVSampleFormat {
AV_SAMPLE_FMT_NONE = -1,
AV_SAMPLE_FMT_U8, ///< unsigned 8 bits
AV_SAMPLE_FMT_S16, ///< signed 16 bits
AV_SAMPLE_FMT_S32, ///< signed 32 bits
AV_SAMPLE_FMT_FLT, ///< float
AV_SAMPLE_FMT_DBL, ///< double
AV_SAMPLE_FMT_U8P, ///< unsigned 8 bits, planar
AV_SAMPLE_FMT_S16P, ///< signed 16 bits, planar
AV_SAMPLE_FMT_S32P, ///< signed 32 bits, planar
AV_SAMPLE_FMT_FLTP, ///< float, planar
AV_SAMPLE_FMT_DBLP, ///< double, planar
AV_SAMPLE_FMT_NB ///< Number of sample formats. DO NOT USE if linking dynamically
};
/**
* Return the name of sample_fmt, or NULL if sample_fmt is not
* recognized.
*/
const char *av_get_sample_fmt_name(enum AVSampleFormat sample_fmt);
/**
* Return a sample format corresponding to name, or AV_SAMPLE_FMT_NONE
* on error.
*/
enum AVSampleFormat av_get_sample_fmt(const char *name);
/**
* Return the planar<->packed alternative form of the given sample format, or
* AV_SAMPLE_FMT_NONE on error. If the passed sample_fmt is already in the
* requested planar/packed format, the format returned is the same as the
* input.
*/
enum AVSampleFormat av_get_alt_sample_fmt(enum AVSampleFormat sample_fmt, int planar);
/**
* Get the packed alternative form of the given sample format.
*
* If the passed sample_fmt is already in packed format, the format returned is
* the same as the input.
*
* @return the packed alternative form of the given sample format or
AV_SAMPLE_FMT_NONE on error.
*/
enum AVSampleFormat av_get_packed_sample_fmt(enum AVSampleFormat sample_fmt);
/**
* Get the planar alternative form of the given sample format.
*
* If the passed sample_fmt is already in planar format, the format returned is
* the same as the input.
*
* @return the planar alternative form of the given sample format or
AV_SAMPLE_FMT_NONE on error.
*/
enum AVSampleFormat av_get_planar_sample_fmt(enum AVSampleFormat sample_fmt);
/**
* Generate a string corresponding to the sample format with
* sample_fmt, or a header if sample_fmt is negative.
*
* @param buf the buffer where to write the string
* @param buf_size the size of buf
* @param sample_fmt the number of the sample format to print the
* corresponding info string, or a negative value to print the
* corresponding header.
* @return the pointer to the filled buffer or NULL if sample_fmt is
* unknown or in case of other errors
*/
char *av_get_sample_fmt_string(char *buf, int buf_size, enum AVSampleFormat sample_fmt);
#if FF_API_GET_BITS_PER_SAMPLE_FMT
/**
* @deprecated Use av_get_bytes_per_sample() instead.
*/
attribute_deprecated
int av_get_bits_per_sample_fmt(enum AVSampleFormat sample_fmt);
#endif
/**
* Return number of bytes per sample.
*
* @param sample_fmt the sample format
* @return number of bytes per sample or zero if unknown for the given
* sample format
*/
int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt);
/**
* Check if the sample format is planar.
*
* @param sample_fmt the sample format to inspect
* @return 1 if the sample format is planar, 0 if it is interleaved
*/
int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt);
/**
* Get the required buffer size for the given audio parameters.
*
* @param[out] linesize calculated linesize, may be NULL
* @param nb_channels the number of channels
* @param nb_samples the number of samples in a single channel
* @param sample_fmt the sample format
* @param align buffer size alignment (0 = default, 1 = no alignment)
* @return required buffer size, or negative error code on failure
*/
int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples,
enum AVSampleFormat sample_fmt, int align);
/**
* Fill channel data pointers and linesize for samples with sample
* format sample_fmt.
*
* The pointers array is filled with the pointers to the samples data:
* for planar, set the start point of each channel's data within the buffer,
* for packed, set the start point of the entire buffer only.
*
* The linesize array is filled with the aligned size of each channel's data
* buffer for planar layout, or the aligned size of the buffer for all channels
* for packed layout.
*
* @see enum AVSampleFormat
* The documentation for AVSampleFormat describes the data layout.
*
* @param[out] audio_data array to be filled with the pointer for each channel
* @param[out] linesize calculated linesize, may be NULL
* @param buf the pointer to a buffer containing the samples
* @param nb_channels the number of channels
* @param nb_samples the number of samples in a single channel
* @param sample_fmt the sample format
* @param align buffer size alignment (0 = default, 1 = no alignment)
* @return 0 on success or a negative error code on failure
*/
int av_samples_fill_arrays(uint8_t **audio_data, int *linesize,
const uint8_t *buf,
int nb_channels, int nb_samples,
enum AVSampleFormat sample_fmt, int align);
/**
* Allocate a samples buffer for nb_samples samples, and fill data pointers and
* linesize accordingly.
* The allocated samples buffer can be freed by using av_freep(&audio_data[0])
*
* @see enum AVSampleFormat
* The documentation for AVSampleFormat describes the data layout.
*
* @param[out] audio_data array to be filled with the pointer for each channel
* @param[out] linesize aligned size for audio buffer(s), may be NULL
* @param nb_channels number of audio channels
* @param nb_samples number of samples per channel
* @param align buffer size alignment (0 = default, 1 = no alignment)
* @return 0 on success or a negative error code on failure
* @see av_samples_fill_arrays()
*/
int av_samples_alloc(uint8_t **audio_data, int *linesize, int nb_channels,
int nb_samples, enum AVSampleFormat sample_fmt, int align);
/**
* Copy samples from src to dst.
*
* @param dst destination array of pointers to data planes
* @param src source array of pointers to data planes
* @param dst_offset offset in samples at which the data will be written to dst
* @param src_offset offset in samples at which the data will be read from src
* @param nb_samples number of samples to be copied
* @param nb_channels number of audio channels
* @param sample_fmt audio sample format
*/
int av_samples_copy(uint8_t **dst, uint8_t * const *src, int dst_offset,
int src_offset, int nb_samples, int nb_channels,
enum AVSampleFormat sample_fmt);
/**
* Fill an audio buffer with silence.
*
* @param audio_data array of pointers to data planes
* @param offset offset in samples at which to start filling
* @param nb_samples number of samples to fill
* @param nb_channels number of audio channels
* @param sample_fmt audio sample format
*/
int av_samples_set_silence(uint8_t **audio_data, int offset, int nb_samples,
int nb_channels, enum AVSampleFormat sample_fmt);
#endif /* AVUTIL_SAMPLEFMT_H */
| 9,129 | 37.686441 | 95 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/bprint.h
|
/*
* Copyright (c) 2012 Nicolas George
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_BPRINT_H
#define AVUTIL_BPRINT_H
#include "attributes.h"
/**
* Define a structure with extra padding to a fixed size
* This helps ensuring binary compatibility with future versions.
*/
#define FF_PAD_STRUCTURE(size, ...) \
__VA_ARGS__ \
char reserved_padding[size - sizeof(struct { __VA_ARGS__ })];
/**
* Buffer to print data progressively
*
* The string buffer grows as necessary and is always 0-terminated.
* The content of the string is never accessed, and thus is
* encoding-agnostic and can even hold binary data.
*
* Small buffers are kept in the structure itself, and thus require no
* memory allocation at all (unless the contents of the buffer is needed
* after the structure goes out of scope). This is almost as lightweight as
* declaring a local "char buf[512]".
*
* The length of the string can go beyond the allocated size: the buffer is
* then truncated, but the functions still keep account of the actual total
* length.
*
* In other words, buf->len can be greater than buf->size and records the
* total length of what would have been to the buffer if there had been
* enough memory.
*
* Append operations do not need to be tested for failure: if a memory
* allocation fails, data stop being appended to the buffer, but the length
* is still updated. This situation can be tested with
* av_bprint_is_complete().
*
* The size_max field determines several possible behaviours:
*
* size_max = -1 (= UINT_MAX) or any large value will let the buffer be
* reallocated as necessary, with an amortized linear cost.
*
* size_max = 0 prevents writing anything to the buffer: only the total
* length is computed. The write operations can then possibly be repeated in
* a buffer with exactly the necessary size
* (using size_init = size_max = len + 1).
*
* size_max = 1 is automatically replaced by the exact size available in the
* structure itself, thus ensuring no dynamic memory allocation. The
* internal buffer is large enough to hold a reasonable paragraph of text,
* such as the current paragraph.
*/
typedef struct AVBPrint {
FF_PAD_STRUCTURE(1024,
char *str; /** string so far */
unsigned len; /** length so far */
unsigned size; /** allocated memory */
unsigned size_max; /** maximum allocated memory */
char reserved_internal_buffer[1];
)
} AVBPrint;
/**
* Convenience macros for special values for av_bprint_init() size_max
* parameter.
*/
#define AV_BPRINT_SIZE_UNLIMITED ((unsigned)-1)
#define AV_BPRINT_SIZE_AUTOMATIC 1
#define AV_BPRINT_SIZE_COUNT_ONLY 0
/**
* Init a print buffer.
*
* @param buf buffer to init
* @param size_init initial size (including the final 0)
* @param size_max maximum size;
* 0 means do not write anything, just count the length;
* 1 is replaced by the maximum value for automatic storage;
* any large value means that the internal buffer will be
* reallocated as needed up to that limit; -1 is converted to
* UINT_MAX, the largest limit possible.
* Check also AV_BPRINT_SIZE_* macros.
*/
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max);
/**
* Init a print buffer using a pre-existing buffer.
*
* The buffer will not be reallocated.
*
* @param buf buffer structure to init
* @param buffer byte buffer to use for the string data
* @param size size of buffer
*/
void av_bprint_init_for_buffer(AVBPrint *buf, char *buffer, unsigned size);
/**
* Append a formated string to a print buffer.
*/
void av_bprintf(AVBPrint *buf, const char *fmt, ...) av_printf_format(2, 3);
/**
* Append char c n times to a print buffer.
*/
void av_bprint_chars(AVBPrint *buf, char c, unsigned n);
/**
* Reset the string to "" but keep internal allocated data.
*/
void av_bprint_clear(AVBPrint *buf);
/**
* Test if the print buffer is complete (not truncated).
*
* It may have been truncated due to a memory allocation failure
* or the size_max limit (compare size and size_max if necessary).
*/
static inline int av_bprint_is_complete(AVBPrint *buf)
{
return buf->len < buf->size;
}
/**
* Finalize a print buffer.
*
* The print buffer can no longer be used afterwards,
* but the len and size fields are still valid.
*
* @arg[out] ret_str if not NULL, used to return a permanent copy of the
* buffer contents, or NULL if memory allocation fails;
* if NULL, the buffer is discarded and freed
* @return 0 for success or error code (probably AVERROR(ENOMEM))
*/
int av_bprint_finalize(AVBPrint *buf, char **ret_str);
#endif /* AVUTIL_BPRINT_H */
| 5,533 | 34.025316 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/timestamp.h
|
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* timestamp utils, mostly useful for debugging/logging purposes
*/
#ifndef AVUTIL_TIMESTAMP_H
#define AVUTIL_TIMESTAMP_H
#include "common.h"
#define AV_TS_MAX_STRING_SIZE 32
/**
* Fill the provided buffer with a string containing a timestamp
* representation.
*
* @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE
* @param ts the timestamp to represent
* @return the buffer in input
*/
static inline char *av_ts_make_string(char *buf, int64_t ts)
{
if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS");
else snprintf(buf, AV_TS_MAX_STRING_SIZE, "%"PRId64"", ts);
return buf;
}
/**
* Convenience macro, the return value should be used only directly in
* function arguments but never stand-alone.
*/
#define av_ts2str(ts) av_ts_make_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts)
/**
* Fill the provided buffer with a string containing a timestamp time
* representation.
*
* @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE
* @param ts the timestamp to represent
* @param tb the timebase of the timestamp
* @return the buffer in input
*/
static inline char *av_ts_make_time_string(char *buf, int64_t ts, AVRational *tb)
{
if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS");
else snprintf(buf, AV_TS_MAX_STRING_SIZE, "%.6g", av_q2d(*tb) * ts);
return buf;
}
/**
* Convenience macro, the return value should be used only directly in
* function arguments but never stand-alone.
*/
#define av_ts2timestr(ts, tb) av_ts_make_time_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts, tb)
#endif /* AVUTIL_TIMESTAMP_H */
| 2,462 | 31.84 | 94 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/version.h
|
/*
* copyright (c) 2003 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_VERSION_H
#define AVUTIL_VERSION_H
#include "avutil.h"
/**
* @file
* @ingroup lavu
* Libavutil version macros
*/
/**
* @defgroup lavu_ver Version and Build diagnostics
*
* Macros and function useful to check at compiletime and at runtime
* which version of libavutil is in use.
*
* @{
*/
#define LIBAVUTIL_VERSION_MAJOR 51
#define LIBAVUTIL_VERSION_MINOR 72
#define LIBAVUTIL_VERSION_MICRO 100
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
LIBAVUTIL_VERSION_MINOR, \
LIBAVUTIL_VERSION_MICRO)
#define LIBAVUTIL_VERSION AV_VERSION(LIBAVUTIL_VERSION_MAJOR, \
LIBAVUTIL_VERSION_MINOR, \
LIBAVUTIL_VERSION_MICRO)
#define LIBAVUTIL_BUILD LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_IDENT "Lavu" AV_STRINGIFY(LIBAVUTIL_VERSION)
/**
* @}
*
* @defgroup depr_guards Deprecation guards
* FF_API_* defines may be placed below to indicate public API that will be
* dropped at a future version bump. The defines themselves are not part of
* the public API and may change, break or disappear at any time.
*
* @{
*/
#ifndef FF_API_OLD_EVAL_NAMES
#define FF_API_OLD_EVAL_NAMES (LIBAVUTIL_VERSION_MAJOR < 52)
#endif
#ifndef FF_API_GET_BITS_PER_SAMPLE_FMT
#define FF_API_GET_BITS_PER_SAMPLE_FMT (LIBAVUTIL_VERSION_MAJOR < 52)
#endif
#ifndef FF_API_FIND_OPT
#define FF_API_FIND_OPT (LIBAVUTIL_VERSION_MAJOR < 52)
#endif
#ifndef FF_API_AV_FIFO_PEEK
#define FF_API_AV_FIFO_PEEK (LIBAVUTIL_VERSION_MAJOR < 52)
#endif
#ifndef FF_API_OLD_AVOPTIONS
#define FF_API_OLD_AVOPTIONS (LIBAVUTIL_VERSION_MAJOR < 52)
#endif
#ifndef FF_API_OLD_TC_ADJUST_FRAMENUM
#define FF_API_OLD_TC_ADJUST_FRAMENUM (LIBAVUTIL_VERSION_MAJOR < 52)
#endif
/**
* @}
*/
#endif /* AVUTIL_VERSION_H */
| 2,784 | 29.604396 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/cpu.h
|
/*
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_CPU_H
#define AVUTIL_CPU_H
#include "attributes.h"
#define AV_CPU_FLAG_FORCE 0x80000000 /* force usage of selected flags (OR) */
/* lower 16 bits - CPU features */
#define AV_CPU_FLAG_MMX 0x0001 ///< standard MMX
#define AV_CPU_FLAG_MMXEXT 0x0002 ///< SSE integer functions or AMD MMX ext
#define AV_CPU_FLAG_MMX2 0x0002 ///< SSE integer functions or AMD MMX ext
#define AV_CPU_FLAG_3DNOW 0x0004 ///< AMD 3DNOW
#define AV_CPU_FLAG_SSE 0x0008 ///< SSE functions
#define AV_CPU_FLAG_SSE2 0x0010 ///< PIV SSE2 functions
#define AV_CPU_FLAG_SSE2SLOW 0x40000000 ///< SSE2 supported, but usually not faster
#define AV_CPU_FLAG_3DNOWEXT 0x0020 ///< AMD 3DNowExt
#define AV_CPU_FLAG_SSE3 0x0040 ///< Prescott SSE3 functions
#define AV_CPU_FLAG_SSE3SLOW 0x20000000 ///< SSE3 supported, but usually not faster
#define AV_CPU_FLAG_SSSE3 0x0080 ///< Conroe SSSE3 functions
#define AV_CPU_FLAG_ATOM 0x10000000 ///< Atom processor, some SSSE3 instructions are slower
#define AV_CPU_FLAG_SSE4 0x0100 ///< Penryn SSE4.1 functions
#define AV_CPU_FLAG_SSE42 0x0200 ///< Nehalem SSE4.2 functions
#define AV_CPU_FLAG_AVX 0x4000 ///< AVX functions: requires OS support even if YMM registers aren't used
#define AV_CPU_FLAG_XOP 0x0400 ///< Bulldozer XOP functions
#define AV_CPU_FLAG_FMA4 0x0800 ///< Bulldozer FMA4 functions
// #if LIBAVUTIL_VERSION_MAJOR <52
#define AV_CPU_FLAG_CMOV 0x1001000 ///< supports cmov instruction
// #else
// #define AV_CPU_FLAG_CMOV 0x1000 ///< supports cmov instruction
// #endif
#define AV_CPU_FLAG_ALTIVEC 0x0001 ///< standard
#define AV_CPU_FLAG_ARMV5TE (1 << 0)
#define AV_CPU_FLAG_ARMV6 (1 << 1)
#define AV_CPU_FLAG_ARMV6T2 (1 << 2)
#define AV_CPU_FLAG_VFP (1 << 3)
#define AV_CPU_FLAG_VFPV3 (1 << 4)
#define AV_CPU_FLAG_NEON (1 << 5)
/**
* Return the flags which specify extensions supported by the CPU.
*/
int av_get_cpu_flags(void);
/**
* Disables cpu detection and forces the specified flags.
* -1 is a special case that disables forcing of specific flags.
*/
void av_force_cpu_flags(int flags);
/**
* Set a mask on flags returned by av_get_cpu_flags().
* This function is mainly useful for testing.
* Please use av_force_cpu_flags() and av_get_cpu_flags() instead which are more flexible
*
* @warning this function is not thread safe.
*/
attribute_deprecated void av_set_cpu_flags_mask(int mask);
/**
* Parse CPU flags from a string.
*
* The returned flags contain the specified flags as well as related unspecified flags.
*
* This function exists only for compatibility with libav.
* Please use av_parse_cpu_caps() when possible.
* @return a combination of AV_CPU_* flags, negative on error.
*/
attribute_deprecated
int av_parse_cpu_flags(const char *s);
/**
* Parse CPU caps from a string and update the given AV_CPU_* flags based on that.
*
* @return negative on error.
*/
int av_parse_cpu_caps(unsigned *flags, const char *s);
/* The following CPU-specific functions shall not be called directly. */
int ff_get_cpu_flags_arm(void);
int ff_get_cpu_flags_ppc(void);
int ff_get_cpu_flags_x86(void);
#endif /* AVUTIL_CPU_H */
| 4,090 | 37.59434 | 113 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/base64.h
|
/*
* Copyright (c) 2006 Ryan Martell. ([email protected])
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_BASE64_H
#define AVUTIL_BASE64_H
#include <stdint.h>
/**
* @defgroup lavu_base64 Base64
* @ingroup lavu_crypto
* @{
*/
/**
* Decode a base64-encoded string.
*
* @param out buffer for decoded data
* @param in null-terminated input string
* @param out_size size in bytes of the out buffer, must be at
* least 3/4 of the length of in
* @return number of bytes written, or a negative value in case of
* invalid input
*/
int av_base64_decode(uint8_t *out, const char *in, int out_size);
/**
* Encode data to base64 and null-terminate.
*
* @param out buffer for encoded data
* @param out_size size in bytes of the output buffer, must be at
* least AV_BASE64_SIZE(in_size)
* @param in_size size in bytes of the 'in' buffer
* @return 'out' or NULL in case of error
*/
char *av_base64_encode(char *out, int out_size, const uint8_t *in, int in_size);
/**
* Calculate the output size needed to base64-encode x bytes.
*/
#define AV_BASE64_SIZE(x) (((x)+2) / 3 * 4 + 1)
/**
* @}
*/
#endif /* AVUTIL_BASE64_H */
| 1,961 | 28.727273 | 80 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/md5.h
|
/*
* copyright (c) 2006 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_MD5_H
#define AVUTIL_MD5_H
#include <stdint.h>
/**
* @defgroup lavu_md5 MD5
* @ingroup lavu_crypto
* @{
*/
extern const int av_md5_size;
struct AVMD5;
void av_md5_init(struct AVMD5 *ctx);
void av_md5_update(struct AVMD5 *ctx, const uint8_t *src, const int len);
void av_md5_final(struct AVMD5 *ctx, uint8_t *dst);
void av_md5_sum(uint8_t *dst, const uint8_t *src, const int len);
/**
* @}
*/
#endif /* AVUTIL_MD5_H */
| 1,274 | 26.717391 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/mem.h
|
/*
* copyright (c) 2006 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* memory handling functions
*/
#ifndef AVUTIL_MEM_H
#define AVUTIL_MEM_H
#include <limits.h>
#include "attributes.h"
#include "error.h"
#include "avutil.h"
/**
* @addtogroup lavu_mem
* @{
*/
#if defined(__INTEL_COMPILER) && __INTEL_COMPILER < 1110 || defined(__SUNPRO_C)
#define DECLARE_ALIGNED(n,t,v) t __attribute__ ((aligned (n))) v
#define DECLARE_ASM_CONST(n,t,v) const t __attribute__ ((aligned (n))) v
#elif defined(__TI_COMPILER_VERSION__)
#define DECLARE_ALIGNED(n,t,v) \
AV_PRAGMA(DATA_ALIGN(v,n)) \
t __attribute__((aligned(n))) v
#define DECLARE_ASM_CONST(n,t,v) \
AV_PRAGMA(DATA_ALIGN(v,n)) \
static const t __attribute__((aligned(n))) v
#elif defined(__GNUC__)
#define DECLARE_ALIGNED(n,t,v) t __attribute__ ((aligned (n))) v
#define DECLARE_ASM_CONST(n,t,v) static const t av_used __attribute__ ((aligned (n))) v
#elif defined(_MSC_VER)
#define DECLARE_ALIGNED(n,t,v) __declspec(align(n)) t v
#define DECLARE_ASM_CONST(n,t,v) __declspec(align(n)) static const t v
#else
#define DECLARE_ALIGNED(n,t,v) t v
#define DECLARE_ASM_CONST(n,t,v) static const t v
#endif
#if AV_GCC_VERSION_AT_LEAST(3,1)
#define av_malloc_attrib __attribute__((__malloc__))
#else
#define av_malloc_attrib
#endif
#if AV_GCC_VERSION_AT_LEAST(4,3)
#define av_alloc_size(...) __attribute__((alloc_size(__VA_ARGS__)))
#else
#define av_alloc_size(...)
#endif
/**
* Allocate a block of size bytes with alignment suitable for all
* memory accesses (including vectors if available on the CPU).
* @param size Size in bytes for the memory block to be allocated.
* @return Pointer to the allocated block, NULL if the block cannot
* be allocated.
* @see av_mallocz()
*/
void *av_malloc(size_t size) av_malloc_attrib av_alloc_size(1);
/**
* Helper function to allocate a block of size * nmemb bytes with
* using av_malloc()
* @param nmemb Number of elements
* @param size Size of the single element
* @return Pointer to the allocated block, NULL if the block cannot
* be allocated.
* @see av_malloc()
*/
av_alloc_size(1,2) static inline void *av_malloc_array(size_t nmemb, size_t size)
{
if (size <= 0 || nmemb >= INT_MAX / size)
return NULL;
return av_malloc(nmemb * size);
}
/**
* Allocate or reallocate a block of memory.
* If ptr is NULL and size > 0, allocate a new block. If
* size is zero, free the memory block pointed to by ptr.
* @param ptr Pointer to a memory block already allocated with
* av_malloc(z)() or av_realloc() or NULL.
* @param size Size in bytes for the memory block to be allocated or
* reallocated.
* @return Pointer to a newly reallocated block or NULL if the block
* cannot be reallocated or the function is used to free the memory block.
* @see av_fast_realloc()
*/
void *av_realloc(void *ptr, size_t size) av_alloc_size(2);
/**
* Allocate or reallocate a block of memory.
* This function does the same thing as av_realloc, except:
* - It takes two arguments and checks the result of the multiplication for
* integer overflow.
* - It frees the input block in case of failure, thus avoiding the memory
* leak with the classic "buf = realloc(buf); if (!buf) return -1;".
*/
void *av_realloc_f(void *ptr, size_t nelem, size_t elsize);
/**
* Free a memory block which has been allocated with av_malloc(z)() or
* av_realloc().
* @param ptr Pointer to the memory block which should be freed.
* @note ptr = NULL is explicitly allowed.
* @note It is recommended that you use av_freep() instead.
* @see av_freep()
*/
void av_free(void *ptr);
/**
* Allocate a block of size bytes with alignment suitable for all
* memory accesses (including vectors if available on the CPU) and
* zero all the bytes of the block.
* @param size Size in bytes for the memory block to be allocated.
* @return Pointer to the allocated block, NULL if it cannot be allocated.
* @see av_malloc()
*/
void *av_mallocz(size_t size) av_malloc_attrib av_alloc_size(1);
/**
* Allocate a block of nmemb * size bytes with alignment suitable for all
* memory accesses (including vectors if available on the CPU) and
* zero all the bytes of the block.
* The allocation will fail if nmemb * size is greater than or equal
* to INT_MAX.
* @param nmemb
* @param size
* @return Pointer to the allocated block, NULL if it cannot be allocated.
*/
void *av_calloc(size_t nmemb, size_t size) av_malloc_attrib;
/**
* Helper function to allocate a block of size * nmemb bytes with
* using av_mallocz()
* @param nmemb Number of elements
* @param size Size of the single element
* @return Pointer to the allocated block, NULL if the block cannot
* be allocated.
* @see av_mallocz()
* @see av_malloc_array()
*/
av_alloc_size(1,2) static inline void *av_mallocz_array(size_t nmemb, size_t size)
{
if (size <= 0 || nmemb >= INT_MAX / size)
return NULL;
return av_mallocz(nmemb * size);
}
/**
* Duplicate the string s.
* @param s string to be duplicated
* @return Pointer to a newly allocated string containing a
* copy of s or NULL if the string cannot be allocated.
*/
char *av_strdup(const char *s) av_malloc_attrib;
/**
* Free a memory block which has been allocated with av_malloc(z)() or
* av_realloc() and set the pointer pointing to it to NULL.
* @param ptr Pointer to the pointer to the memory block which should
* be freed.
* @see av_free()
*/
void av_freep(void *ptr);
/**
* Add an element to a dynamic array.
*
* @param tab_ptr Pointer to the array.
* @param nb_ptr Pointer to the number of elements in the array.
* @param elem Element to be added.
*/
void av_dynarray_add(void *tab_ptr, int *nb_ptr, void *elem);
/**
* Multiply two size_t values checking for overflow.
* @return 0 if success, AVERROR(EINVAL) if overflow.
*/
static inline int av_size_mult(size_t a, size_t b, size_t *r)
{
size_t t = a * b;
/* Hack inspired from glibc: only try the division if nelem and elsize
* are both greater than sqrt(SIZE_MAX). */
if ((a | b) >= ((size_t)1 << (sizeof(size_t) * 4)) && a && t / a != b)
return AVERROR(EINVAL);
*r = t;
return 0;
}
/**
* Set the maximum size that may me allocated in one block.
*/
void av_max_alloc(size_t max);
/**
* @}
*/
#endif /* AVUTIL_MEM_H */
| 7,261 | 31.419643 | 94 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/avstring.h
|
/*
* Copyright (c) 2007 Mans Rullgard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_AVSTRING_H
#define AVUTIL_AVSTRING_H
#include <stddef.h>
#include "attributes.h"
/**
* @addtogroup lavu_string
* @{
*/
/**
* Return non-zero if pfx is a prefix of str. If it is, *ptr is set to
* the address of the first character in str after the prefix.
*
* @param str input string
* @param pfx prefix to test
* @param ptr updated if the prefix is matched inside str
* @return non-zero if the prefix matches, zero otherwise
*/
int av_strstart(const char *str, const char *pfx, const char **ptr);
/**
* Return non-zero if pfx is a prefix of str independent of case. If
* it is, *ptr is set to the address of the first character in str
* after the prefix.
*
* @param str input string
* @param pfx prefix to test
* @param ptr updated if the prefix is matched inside str
* @return non-zero if the prefix matches, zero otherwise
*/
int av_stristart(const char *str, const char *pfx, const char **ptr);
/**
* Locate the first case-independent occurrence in the string haystack
* of the string needle. A zero-length string needle is considered to
* match at the start of haystack.
*
* This function is a case-insensitive version of the standard strstr().
*
* @param haystack string to search in
* @param needle string to search for
* @return pointer to the located match within haystack
* or a null pointer if no match
*/
char *av_stristr(const char *haystack, const char *needle);
/**
* Copy the string src to dst, but no more than size - 1 bytes, and
* null-terminate dst.
*
* This function is the same as BSD strlcpy().
*
* @param dst destination buffer
* @param src source string
* @param size size of destination buffer
* @return the length of src
*
* @warning since the return value is the length of src, src absolutely
* _must_ be a properly 0-terminated string, otherwise this will read beyond
* the end of the buffer and possibly crash.
*/
size_t av_strlcpy(char *dst, const char *src, size_t size);
/**
* Append the string src to the string dst, but to a total length of
* no more than size - 1 bytes, and null-terminate dst.
*
* This function is similar to BSD strlcat(), but differs when
* size <= strlen(dst).
*
* @param dst destination buffer
* @param src source string
* @param size size of destination buffer
* @return the total length of src and dst
*
* @warning since the return value use the length of src and dst, these
* absolutely _must_ be a properly 0-terminated strings, otherwise this
* will read beyond the end of the buffer and possibly crash.
*/
size_t av_strlcat(char *dst, const char *src, size_t size);
/**
* Append output to a string, according to a format. Never write out of
* the destination buffer, and always put a terminating 0 within
* the buffer.
* @param dst destination buffer (string to which the output is
* appended)
* @param size total size of the destination buffer
* @param fmt printf-compatible format string, specifying how the
* following parameters are used
* @return the length of the string that would have been generated
* if enough space had been available
*/
size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...) av_printf_format(3, 4);
/**
* Print arguments following specified format into a large enough auto
* allocated buffer. It is similar to GNU asprintf().
* @param fmt printf-compatible format string, specifying how the
* following parameters are used.
* @return the allocated string
* @note You have to free the string yourself with av_free().
*/
char *av_asprintf(const char *fmt, ...) av_printf_format(1, 2);
/**
* Convert a number to a av_malloced string.
*/
char *av_d2str(double d);
/**
* Unescape the given string until a non escaped terminating char,
* and return the token corresponding to the unescaped string.
*
* The normal \ and ' escaping is supported. Leading and trailing
* whitespaces are removed, unless they are escaped with '\' or are
* enclosed between ''.
*
* @param buf the buffer to parse, buf will be updated to point to the
* terminating char
* @param term a 0-terminated list of terminating chars
* @return the malloced unescaped string, which must be av_freed by
* the user, NULL in case of allocation failure
*/
char *av_get_token(const char **buf, const char *term);
/**
* Split the string into several tokens which can be accessed by
* successive calls to av_strtok().
*
* A token is defined as a sequence of characters not belonging to the
* set specified in delim.
*
* On the first call to av_strtok(), s should point to the string to
* parse, and the value of saveptr is ignored. In subsequent calls, s
* should be NULL, and saveptr should be unchanged since the previous
* call.
*
* This function is similar to strtok_r() defined in POSIX.1.
*
* @param s the string to parse, may be NULL
* @param delim 0-terminated list of token delimiters, must be non-NULL
* @param saveptr user-provided pointer which points to stored
* information necessary for av_strtok() to continue scanning the same
* string. saveptr is updated to point to the next character after the
* first delimiter found, or to NULL if the string was terminated
* @return the found token, or NULL when no token is found
*/
char *av_strtok(char *s, const char *delim, char **saveptr);
/**
* Locale-independent conversion of ASCII characters to uppercase.
*/
static inline int av_toupper(int c)
{
if (c >= 'a' && c <= 'z')
c ^= 0x20;
return c;
}
/**
* Locale-independent conversion of ASCII characters to lowercase.
*/
static inline int av_tolower(int c)
{
if (c >= 'A' && c <= 'Z')
c ^= 0x20;
return c;
}
/**
* Locale-independent case-insensitive compare.
* @note This means only ASCII-range characters are case-insensitive
*/
int av_strcasecmp(const char *a, const char *b);
/**
* Locale-independent case-insensitive compare.
* @note This means only ASCII-range characters are case-insensitive
*/
int av_strncasecmp(const char *a, const char *b, size_t n);
/**
* @}
*/
#endif /* AVUTIL_AVSTRING_H */
| 6,906 | 31.890476 | 88 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/timecode.h
|
/*
* Copyright (c) 2006 Smartjog S.A.S, Baptiste Coudurier <[email protected]>
* Copyright (c) 2011-2012 Smartjog S.A.S, Clément Bœsch <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Timecode helpers header
*/
#ifndef AVUTIL_TIMECODE_H
#define AVUTIL_TIMECODE_H
#include <stdint.h>
#include "rational.h"
#define AV_TIMECODE_STR_SIZE 16
enum AVTimecodeFlag {
AV_TIMECODE_FLAG_DROPFRAME = 1<<0, ///< timecode is drop frame
AV_TIMECODE_FLAG_24HOURSMAX = 1<<1, ///< timecode wraps after 24 hours
AV_TIMECODE_FLAG_ALLOWNEGATIVE = 1<<2, ///< negative time values are allowed
};
typedef struct {
int start; ///< timecode frame start (first base frame number)
uint32_t flags; ///< flags such as drop frame, +24 hours support, ...
AVRational rate; ///< frame rate in rational form
unsigned fps; ///< frame per second; must be consistent with the rate field
} AVTimecode;
/**
* Adjust frame number for NTSC drop frame time code.
*
* @param framenum frame number to adjust
* @return adjusted frame number
* @warning adjustment is only valid in NTSC 29.97
* @deprecated use av_timecode_adjust_ntsc_framenum2 instead
*/
attribute_deprecated int av_timecode_adjust_ntsc_framenum(int framenum);
/**
* Adjust frame number for NTSC drop frame time code.
*
* @param framenum frame number to adjust
* @param fps frame per second, 30 or 60
* @return adjusted frame number
* @warning adjustment is only valid in NTSC 29.97 and 59.94
*/
int av_timecode_adjust_ntsc_framenum2(int framenum, int fps);
/**
* Convert frame number to SMPTE 12M binary representation.
*
* @param tc timecode data correctly initialized
* @param framenum frame number
* @return the SMPTE binary representation
*
* @note Frame number adjustment is automatically done in case of drop timecode,
* you do NOT have to call av_timecode_adjust_ntsc_framenum().
* @note The frame number is relative to tc->start.
* @note Color frame (CF), binary group flags (BGF) and biphase mark polarity
* correction (PC) bits are set to zero.
*/
uint32_t av_timecode_get_smpte_from_framenum(const AVTimecode *tc, int framenum);
/**
* Load timecode string in buf.
*
* @param buf destination buffer, must be at least AV_TIMECODE_STR_SIZE long
* @param tc timecode data correctly initialized
* @param framenum frame number
* @return the buf parameter
*
* @note Timecode representation can be a negative timecode and have more than
* 24 hours, but will only be honored if the flags are correctly set.
* @note The frame number is relative to tc->start.
*/
char *av_timecode_make_string(const AVTimecode *tc, char *buf, int framenum);
/**
* Get the timecode string from the SMPTE timecode format.
*
* @param buf destination buffer, must be at least AV_TIMECODE_STR_SIZE long
* @param tcsmpte the 32-bit SMPTE timecode
* @param prevent_df prevent the use of a drop flag when it is known the DF bit
* is arbitrary
* @return the buf parameter
*/
char *av_timecode_make_smpte_tc_string(char *buf, uint32_t tcsmpte, int prevent_df);
/**
* Get the timecode string from the 25-bit timecode format (MPEG GOP format).
*
* @param buf destination buffer, must be at least AV_TIMECODE_STR_SIZE long
* @param tc25bit the 25-bits timecode
* @return the buf parameter
*/
char *av_timecode_make_mpeg_tc_string(char *buf, uint32_t tc25bit);
/**
* Init a timecode struct with the passed parameters.
*
* @param log_ctx a pointer to an arbitrary struct of which the first field
* is a pointer to an AVClass struct (used for av_log)
* @param tc pointer to an allocated AVTimecode
* @param rate frame rate in rational form
* @param flags miscellaneous flags such as drop frame, +24 hours, ...
* (see AVTimecodeFlag)
* @param frame_start the first frame number
* @return 0 on success, AVERROR otherwise
*/
int av_timecode_init(AVTimecode *tc, AVRational rate, int flags, int frame_start, void *log_ctx);
/**
* Parse timecode representation (hh:mm:ss[:;.]ff).
*
* @param log_ctx a pointer to an arbitrary struct of which the first field is a
* pointer to an AVClass struct (used for av_log).
* @param tc pointer to an allocated AVTimecode
* @param rate frame rate in rational form
* @param str timecode string which will determine the frame start
* @return 0 on success, AVERROR otherwise
*/
int av_timecode_init_from_string(AVTimecode *tc, AVRational rate, const char *str, void *log_ctx);
/**
* Check if the timecode feature is available for the given frame rate
*
* @return 0 if supported, <0 otherwise
*/
int av_timecode_check_frame_rate(AVRational rate);
#endif /* AVUTIL_TIMECODE_H */
| 5,667 | 36.536424 | 98 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/time.h
|
/*
* Copyright (c) 2000-2003 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_TIME_H
#define AVUTIL_TIME_H
#include <stdint.h>
/**
* Get the current time in microseconds.
*/
int64_t av_gettime(void);
/**
* Sleep for a period of time. Although the duration is expressed in
* microseconds, the actual delay may be rounded to the precision of the
* system timer.
*
* @param usec Number of microseconds to sleep.
* @return zero on success or (negative) error code.
*/
int av_usleep(unsigned usec);
#endif /* AVUTIL_TIME_H */
| 1,283 | 29.571429 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/intfloat.h
|
/*
* Copyright (c) 2011 Mans Rullgard
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_INTFLOAT_H
#define AVUTIL_INTFLOAT_H
#include <stdint.h>
#include "attributes.h"
union av_intfloat32 {
uint32_t i;
float f;
};
union av_intfloat64 {
uint64_t i;
double f;
};
/**
* Reinterpret a 32-bit integer as a float.
*/
static av_always_inline float av_int2float(uint32_t i)
{
union av_intfloat32 v;
v.i = i;
return v.f;
}
/**
* Reinterpret a float as a 32-bit integer.
*/
static av_always_inline uint32_t av_float2int(float f)
{
union av_intfloat32 v;
v.f = f;
return v.i;
}
/**
* Reinterpret a 64-bit integer as a double.
*/
static av_always_inline double av_int2double(uint64_t i)
{
union av_intfloat64 v;
v.i = i;
return v.f;
}
/**
* Reinterpret a double as a 64-bit integer.
*/
static av_always_inline uint64_t av_double2int(double f)
{
union av_intfloat64 v;
v.f = f;
return v.i;
}
#endif /* AVUTIL_INTFLOAT_H */
| 1,722 | 21.089744 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/intreadwrite.h
|
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_INTREADWRITE_H
#define AVUTIL_INTREADWRITE_H
#include <stdint.h>
#include "libavutil/avconfig.h"
#include "attributes.h"
#include "bswap.h"
typedef union {
uint64_t u64;
uint32_t u32[2];
uint16_t u16[4];
uint8_t u8 [8];
double f64;
float f32[2];
} av_alias av_alias64;
typedef union {
uint32_t u32;
uint16_t u16[2];
uint8_t u8 [4];
float f32;
} av_alias av_alias32;
typedef union {
uint16_t u16;
uint8_t u8 [2];
} av_alias av_alias16;
/*
* Arch-specific headers can provide any combination of
* AV_[RW][BLN](16|24|32|64) and AV_(COPY|SWAP|ZERO)(64|128) macros.
* Preprocessor symbols must be defined, even if these are implemented
* as inline functions.
*/
#ifdef HAVE_AV_CONFIG_H
#include "config.h"
#if ARCH_ARM
# include "arm/intreadwrite.h"
#elif ARCH_AVR32
# include "avr32/intreadwrite.h"
#elif ARCH_MIPS
# include "mips/intreadwrite.h"
#elif ARCH_PPC
# include "ppc/intreadwrite.h"
#elif ARCH_TOMI
# include "tomi/intreadwrite.h"
#elif ARCH_X86
# include "x86/intreadwrite.h"
#endif
#endif /* HAVE_AV_CONFIG_H */
/*
* Map AV_RNXX <-> AV_R[BL]XX for all variants provided by per-arch headers.
*/
#if AV_HAVE_BIGENDIAN
# if defined(AV_RN16) && !defined(AV_RB16)
# define AV_RB16(p) AV_RN16(p)
# elif !defined(AV_RN16) && defined(AV_RB16)
# define AV_RN16(p) AV_RB16(p)
# endif
# if defined(AV_WN16) && !defined(AV_WB16)
# define AV_WB16(p, v) AV_WN16(p, v)
# elif !defined(AV_WN16) && defined(AV_WB16)
# define AV_WN16(p, v) AV_WB16(p, v)
# endif
# if defined(AV_RN24) && !defined(AV_RB24)
# define AV_RB24(p) AV_RN24(p)
# elif !defined(AV_RN24) && defined(AV_RB24)
# define AV_RN24(p) AV_RB24(p)
# endif
# if defined(AV_WN24) && !defined(AV_WB24)
# define AV_WB24(p, v) AV_WN24(p, v)
# elif !defined(AV_WN24) && defined(AV_WB24)
# define AV_WN24(p, v) AV_WB24(p, v)
# endif
# if defined(AV_RN32) && !defined(AV_RB32)
# define AV_RB32(p) AV_RN32(p)
# elif !defined(AV_RN32) && defined(AV_RB32)
# define AV_RN32(p) AV_RB32(p)
# endif
# if defined(AV_WN32) && !defined(AV_WB32)
# define AV_WB32(p, v) AV_WN32(p, v)
# elif !defined(AV_WN32) && defined(AV_WB32)
# define AV_WN32(p, v) AV_WB32(p, v)
# endif
# if defined(AV_RN64) && !defined(AV_RB64)
# define AV_RB64(p) AV_RN64(p)
# elif !defined(AV_RN64) && defined(AV_RB64)
# define AV_RN64(p) AV_RB64(p)
# endif
# if defined(AV_WN64) && !defined(AV_WB64)
# define AV_WB64(p, v) AV_WN64(p, v)
# elif !defined(AV_WN64) && defined(AV_WB64)
# define AV_WN64(p, v) AV_WB64(p, v)
# endif
#else /* AV_HAVE_BIGENDIAN */
# if defined(AV_RN16) && !defined(AV_RL16)
# define AV_RL16(p) AV_RN16(p)
# elif !defined(AV_RN16) && defined(AV_RL16)
# define AV_RN16(p) AV_RL16(p)
# endif
# if defined(AV_WN16) && !defined(AV_WL16)
# define AV_WL16(p, v) AV_WN16(p, v)
# elif !defined(AV_WN16) && defined(AV_WL16)
# define AV_WN16(p, v) AV_WL16(p, v)
# endif
# if defined(AV_RN24) && !defined(AV_RL24)
# define AV_RL24(p) AV_RN24(p)
# elif !defined(AV_RN24) && defined(AV_RL24)
# define AV_RN24(p) AV_RL24(p)
# endif
# if defined(AV_WN24) && !defined(AV_WL24)
# define AV_WL24(p, v) AV_WN24(p, v)
# elif !defined(AV_WN24) && defined(AV_WL24)
# define AV_WN24(p, v) AV_WL24(p, v)
# endif
# if defined(AV_RN32) && !defined(AV_RL32)
# define AV_RL32(p) AV_RN32(p)
# elif !defined(AV_RN32) && defined(AV_RL32)
# define AV_RN32(p) AV_RL32(p)
# endif
# if defined(AV_WN32) && !defined(AV_WL32)
# define AV_WL32(p, v) AV_WN32(p, v)
# elif !defined(AV_WN32) && defined(AV_WL32)
# define AV_WN32(p, v) AV_WL32(p, v)
# endif
# if defined(AV_RN64) && !defined(AV_RL64)
# define AV_RL64(p) AV_RN64(p)
# elif !defined(AV_RN64) && defined(AV_RL64)
# define AV_RN64(p) AV_RL64(p)
# endif
# if defined(AV_WN64) && !defined(AV_WL64)
# define AV_WL64(p, v) AV_WN64(p, v)
# elif !defined(AV_WN64) && defined(AV_WL64)
# define AV_WN64(p, v) AV_WL64(p, v)
# endif
#endif /* !AV_HAVE_BIGENDIAN */
/*
* Define AV_[RW]N helper macros to simplify definitions not provided
* by per-arch headers.
*/
#if defined(__GNUC__) && !defined(__TI_COMPILER_VERSION__)
union unaligned_64 { uint64_t l; } __attribute__((packed)) av_alias;
union unaligned_32 { uint32_t l; } __attribute__((packed)) av_alias;
union unaligned_16 { uint16_t l; } __attribute__((packed)) av_alias;
# define AV_RN(s, p) (((const union unaligned_##s *) (p))->l)
# define AV_WN(s, p, v) ((((union unaligned_##s *) (p))->l) = (v))
#elif defined(__DECC)
# define AV_RN(s, p) (*((const __unaligned uint##s##_t*)(p)))
# define AV_WN(s, p, v) (*((__unaligned uint##s##_t*)(p)) = (v))
#elif AV_HAVE_FAST_UNALIGNED
# define AV_RN(s, p) (((const av_alias##s*)(p))->u##s)
# define AV_WN(s, p, v) (((av_alias##s*)(p))->u##s = (v))
#else
#ifndef AV_RB16
# define AV_RB16(x) \
((((const uint8_t*)(x))[0] << 8) | \
((const uint8_t*)(x))[1])
#endif
#ifndef AV_WB16
# define AV_WB16(p, darg) do { \
unsigned d = (darg); \
((uint8_t*)(p))[1] = (d); \
((uint8_t*)(p))[0] = (d)>>8; \
} while(0)
#endif
#ifndef AV_RL16
# define AV_RL16(x) \
((((const uint8_t*)(x))[1] << 8) | \
((const uint8_t*)(x))[0])
#endif
#ifndef AV_WL16
# define AV_WL16(p, darg) do { \
unsigned d = (darg); \
((uint8_t*)(p))[0] = (d); \
((uint8_t*)(p))[1] = (d)>>8; \
} while(0)
#endif
#ifndef AV_RB32
# define AV_RB32(x) \
(((uint32_t)((const uint8_t*)(x))[0] << 24) | \
(((const uint8_t*)(x))[1] << 16) | \
(((const uint8_t*)(x))[2] << 8) | \
((const uint8_t*)(x))[3])
#endif
#ifndef AV_WB32
# define AV_WB32(p, darg) do { \
unsigned d = (darg); \
((uint8_t*)(p))[3] = (d); \
((uint8_t*)(p))[2] = (d)>>8; \
((uint8_t*)(p))[1] = (d)>>16; \
((uint8_t*)(p))[0] = (d)>>24; \
} while(0)
#endif
#ifndef AV_RL32
# define AV_RL32(x) \
(((uint32_t)((const uint8_t*)(x))[3] << 24) | \
(((const uint8_t*)(x))[2] << 16) | \
(((const uint8_t*)(x))[1] << 8) | \
((const uint8_t*)(x))[0])
#endif
#ifndef AV_WL32
# define AV_WL32(p, darg) do { \
unsigned d = (darg); \
((uint8_t*)(p))[0] = (d); \
((uint8_t*)(p))[1] = (d)>>8; \
((uint8_t*)(p))[2] = (d)>>16; \
((uint8_t*)(p))[3] = (d)>>24; \
} while(0)
#endif
#ifndef AV_RB64
# define AV_RB64(x) \
(((uint64_t)((const uint8_t*)(x))[0] << 56) | \
((uint64_t)((const uint8_t*)(x))[1] << 48) | \
((uint64_t)((const uint8_t*)(x))[2] << 40) | \
((uint64_t)((const uint8_t*)(x))[3] << 32) | \
((uint64_t)((const uint8_t*)(x))[4] << 24) | \
((uint64_t)((const uint8_t*)(x))[5] << 16) | \
((uint64_t)((const uint8_t*)(x))[6] << 8) | \
(uint64_t)((const uint8_t*)(x))[7])
#endif
#ifndef AV_WB64
# define AV_WB64(p, darg) do { \
uint64_t d = (darg); \
((uint8_t*)(p))[7] = (d); \
((uint8_t*)(p))[6] = (d)>>8; \
((uint8_t*)(p))[5] = (d)>>16; \
((uint8_t*)(p))[4] = (d)>>24; \
((uint8_t*)(p))[3] = (d)>>32; \
((uint8_t*)(p))[2] = (d)>>40; \
((uint8_t*)(p))[1] = (d)>>48; \
((uint8_t*)(p))[0] = (d)>>56; \
} while(0)
#endif
#ifndef AV_RL64
# define AV_RL64(x) \
(((uint64_t)((const uint8_t*)(x))[7] << 56) | \
((uint64_t)((const uint8_t*)(x))[6] << 48) | \
((uint64_t)((const uint8_t*)(x))[5] << 40) | \
((uint64_t)((const uint8_t*)(x))[4] << 32) | \
((uint64_t)((const uint8_t*)(x))[3] << 24) | \
((uint64_t)((const uint8_t*)(x))[2] << 16) | \
((uint64_t)((const uint8_t*)(x))[1] << 8) | \
(uint64_t)((const uint8_t*)(x))[0])
#endif
#ifndef AV_WL64
# define AV_WL64(p, darg) do { \
uint64_t d = (darg); \
((uint8_t*)(p))[0] = (d); \
((uint8_t*)(p))[1] = (d)>>8; \
((uint8_t*)(p))[2] = (d)>>16; \
((uint8_t*)(p))[3] = (d)>>24; \
((uint8_t*)(p))[4] = (d)>>32; \
((uint8_t*)(p))[5] = (d)>>40; \
((uint8_t*)(p))[6] = (d)>>48; \
((uint8_t*)(p))[7] = (d)>>56; \
} while(0)
#endif
#if AV_HAVE_BIGENDIAN
# define AV_RN(s, p) AV_RB##s(p)
# define AV_WN(s, p, v) AV_WB##s(p, v)
#else
# define AV_RN(s, p) AV_RL##s(p)
# define AV_WN(s, p, v) AV_WL##s(p, v)
#endif
#endif /* HAVE_FAST_UNALIGNED */
#ifndef AV_RN16
# define AV_RN16(p) AV_RN(16, p)
#endif
#ifndef AV_RN32
# define AV_RN32(p) AV_RN(32, p)
#endif
#ifndef AV_RN64
# define AV_RN64(p) AV_RN(64, p)
#endif
#ifndef AV_WN16
# define AV_WN16(p, v) AV_WN(16, p, v)
#endif
#ifndef AV_WN32
# define AV_WN32(p, v) AV_WN(32, p, v)
#endif
#ifndef AV_WN64
# define AV_WN64(p, v) AV_WN(64, p, v)
#endif
#if AV_HAVE_BIGENDIAN
# define AV_RB(s, p) AV_RN##s(p)
# define AV_WB(s, p, v) AV_WN##s(p, v)
# define AV_RL(s, p) av_bswap##s(AV_RN##s(p))
# define AV_WL(s, p, v) AV_WN##s(p, av_bswap##s(v))
#else
# define AV_RB(s, p) av_bswap##s(AV_RN##s(p))
# define AV_WB(s, p, v) AV_WN##s(p, av_bswap##s(v))
# define AV_RL(s, p) AV_RN##s(p)
# define AV_WL(s, p, v) AV_WN##s(p, v)
#endif
#define AV_RB8(x) (((const uint8_t*)(x))[0])
#define AV_WB8(p, d) do { ((uint8_t*)(p))[0] = (d); } while(0)
#define AV_RL8(x) AV_RB8(x)
#define AV_WL8(p, d) AV_WB8(p, d)
#ifndef AV_RB16
# define AV_RB16(p) AV_RB(16, p)
#endif
#ifndef AV_WB16
# define AV_WB16(p, v) AV_WB(16, p, v)
#endif
#ifndef AV_RL16
# define AV_RL16(p) AV_RL(16, p)
#endif
#ifndef AV_WL16
# define AV_WL16(p, v) AV_WL(16, p, v)
#endif
#ifndef AV_RB32
# define AV_RB32(p) AV_RB(32, p)
#endif
#ifndef AV_WB32
# define AV_WB32(p, v) AV_WB(32, p, v)
#endif
#ifndef AV_RL32
# define AV_RL32(p) AV_RL(32, p)
#endif
#ifndef AV_WL32
# define AV_WL32(p, v) AV_WL(32, p, v)
#endif
#ifndef AV_RB64
# define AV_RB64(p) AV_RB(64, p)
#endif
#ifndef AV_WB64
# define AV_WB64(p, v) AV_WB(64, p, v)
#endif
#ifndef AV_RL64
# define AV_RL64(p) AV_RL(64, p)
#endif
#ifndef AV_WL64
# define AV_WL64(p, v) AV_WL(64, p, v)
#endif
#ifndef AV_RB24
# define AV_RB24(x) \
((((const uint8_t*)(x))[0] << 16) | \
(((const uint8_t*)(x))[1] << 8) | \
((const uint8_t*)(x))[2])
#endif
#ifndef AV_WB24
# define AV_WB24(p, d) do { \
((uint8_t*)(p))[2] = (d); \
((uint8_t*)(p))[1] = (d)>>8; \
((uint8_t*)(p))[0] = (d)>>16; \
} while(0)
#endif
#ifndef AV_RL24
# define AV_RL24(x) \
((((const uint8_t*)(x))[2] << 16) | \
(((const uint8_t*)(x))[1] << 8) | \
((const uint8_t*)(x))[0])
#endif
#ifndef AV_WL24
# define AV_WL24(p, d) do { \
((uint8_t*)(p))[0] = (d); \
((uint8_t*)(p))[1] = (d)>>8; \
((uint8_t*)(p))[2] = (d)>>16; \
} while(0)
#endif
/*
* The AV_[RW]NA macros access naturally aligned data
* in a type-safe way.
*/
#define AV_RNA(s, p) (((const av_alias##s*)(p))->u##s)
#define AV_WNA(s, p, v) (((av_alias##s*)(p))->u##s = (v))
#ifndef AV_RN16A
# define AV_RN16A(p) AV_RNA(16, p)
#endif
#ifndef AV_RN32A
# define AV_RN32A(p) AV_RNA(32, p)
#endif
#ifndef AV_RN64A
# define AV_RN64A(p) AV_RNA(64, p)
#endif
#ifndef AV_WN16A
# define AV_WN16A(p, v) AV_WNA(16, p, v)
#endif
#ifndef AV_WN32A
# define AV_WN32A(p, v) AV_WNA(32, p, v)
#endif
#ifndef AV_WN64A
# define AV_WN64A(p, v) AV_WNA(64, p, v)
#endif
/* Parameters for AV_COPY*, AV_SWAP*, AV_ZERO* must be
* naturally aligned. They may be implemented using MMX,
* so emms_c() must be called before using any float code
* afterwards.
*/
#define AV_COPY(n, d, s) \
(((av_alias##n*)(d))->u##n = ((const av_alias##n*)(s))->u##n)
#ifndef AV_COPY16
# define AV_COPY16(d, s) AV_COPY(16, d, s)
#endif
#ifndef AV_COPY32
# define AV_COPY32(d, s) AV_COPY(32, d, s)
#endif
#ifndef AV_COPY64
# define AV_COPY64(d, s) AV_COPY(64, d, s)
#endif
#ifndef AV_COPY128
# define AV_COPY128(d, s) \
do { \
AV_COPY64(d, s); \
AV_COPY64((char*)(d)+8, (char*)(s)+8); \
} while(0)
#endif
#define AV_SWAP(n, a, b) FFSWAP(av_alias##n, *(av_alias##n*)(a), *(av_alias##n*)(b))
#ifndef AV_SWAP64
# define AV_SWAP64(a, b) AV_SWAP(64, a, b)
#endif
#define AV_ZERO(n, d) (((av_alias##n*)(d))->u##n = 0)
#ifndef AV_ZERO16
# define AV_ZERO16(d) AV_ZERO(16, d)
#endif
#ifndef AV_ZERO32
# define AV_ZERO32(d) AV_ZERO(32, d)
#endif
#ifndef AV_ZERO64
# define AV_ZERO64(d) AV_ZERO(64, d)
#endif
#ifndef AV_ZERO128
# define AV_ZERO128(d) \
do { \
AV_ZERO64(d); \
AV_ZERO64((char*)(d)+8); \
} while(0)
#endif
#endif /* AVUTIL_INTREADWRITE_H */
| 14,818 | 27.013233 | 84 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/parseutils.h
|
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_PARSEUTILS_H
#define AVUTIL_PARSEUTILS_H
#include <time.h>
#include "rational.h"
/**
* @file
* misc parsing utilities
*/
/**
* Parse str and store the parsed ratio in q.
*
* Note that a ratio with infinite (1/0) or negative value is
* considered valid, so you should check on the returned value if you
* want to exclude those values.
*
* The undefined value can be expressed using the "0:0" string.
*
* @param[in,out] q pointer to the AVRational which will contain the ratio
* @param[in] str the string to parse: it has to be a string in the format
* num:den, a float number or an expression
* @param[in] max the maximum allowed numerator and denominator
* @param[in] log_offset log level offset which is applied to the log
* level of log_ctx
* @param[in] log_ctx parent logging context
* @return >= 0 on success, a negative error code otherwise
*/
int av_parse_ratio(AVRational *q, const char *str, int max,
int log_offset, void *log_ctx);
#define av_parse_ratio_quiet(rate, str, max) \
av_parse_ratio(rate, str, max, AV_LOG_MAX_OFFSET, NULL)
/**
* Parse str and put in width_ptr and height_ptr the detected values.
*
* @param[in,out] width_ptr pointer to the variable which will contain the detected
* width value
* @param[in,out] height_ptr pointer to the variable which will contain the detected
* height value
* @param[in] str the string to parse: it has to be a string in the format
* width x height or a valid video size abbreviation.
* @return >= 0 on success, a negative error code otherwise
*/
int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str);
/**
* Parse str and store the detected values in *rate.
*
* @param[in,out] rate pointer to the AVRational which will contain the detected
* frame rate
* @param[in] str the string to parse: it has to be a string in the format
* rate_num / rate_den, a float number or a valid video rate abbreviation
* @return >= 0 on success, a negative error code otherwise
*/
int av_parse_video_rate(AVRational *rate, const char *str);
/**
* Put the RGBA values that correspond to color_string in rgba_color.
*
* @param color_string a string specifying a color. It can be the name of
* a color (case insensitive match) or a [0x|#]RRGGBB[AA] sequence,
* possibly followed by "@" and a string representing the alpha
* component.
* The alpha component may be a string composed by "0x" followed by an
* hexadecimal number or a decimal number between 0.0 and 1.0, which
* represents the opacity value (0x00/0.0 means completely transparent,
* 0xff/1.0 completely opaque).
* If the alpha component is not specified then 0xff is assumed.
* The string "random" will result in a random color.
* @param slen length of the initial part of color_string containing the
* color. It can be set to -1 if color_string is a null terminated string
* containing nothing else than the color.
* @return >= 0 in case of success, a negative value in case of
* failure (for example if color_string cannot be parsed).
*/
int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen,
void *log_ctx);
/**
* Parse timestr and return in *time a corresponding number of
* microseconds.
*
* @param timeval puts here the number of microseconds corresponding
* to the string in timestr. If the string represents a duration, it
* is the number of microseconds contained in the time interval. If
* the string is a date, is the number of microseconds since 1st of
* January, 1970 up to the time of the parsed date. If timestr cannot
* be successfully parsed, set *time to INT64_MIN.
* @param timestr a string representing a date or a duration.
* - If a date the syntax is:
* @code
* [{YYYY-MM-DD|YYYYMMDD}[T|t| ]]{{HH:MM:SS[.m...]]]}|{HHMMSS[.m...]]]}}[Z]
* now
* @endcode
* If the value is "now" it takes the current time.
* Time is local time unless Z is appended, in which case it is
* interpreted as UTC.
* If the year-month-day part is not specified it takes the current
* year-month-day.
* - If a duration the syntax is:
* @code
* [-]HH:MM:SS[.m...]]]
* [-]S+[.m...]
* @endcode
* @param duration flag which tells how to interpret timestr, if not
* zero timestr is interpreted as a duration, otherwise as a date
* @return 0 in case of success, a negative value corresponding to an
* AVERROR code otherwise
*/
int av_parse_time(int64_t *timeval, const char *timestr, int duration);
/**
* Parse the input string p according to the format string fmt and
* store its results in the structure dt.
* This implementation supports only a subset of the formats supported
* by the standard strptime().
*
* In particular it actually supports the parameters:
* - %H: the hour as a decimal number, using a 24-hour clock, in the
* range '00' through '23'
* - %M: the minute as a decimal number, using a 24-hour clock, in the
* range '00' through '59'
* - %S: the second as a decimal number, using a 24-hour clock, in the
* range '00' through '59'
* - %Y: the year as a decimal number, using the Gregorian calendar
* - %m: the month as a decimal number, in the range '1' through '12'
* - %d: the day of the month as a decimal number, in the range '1'
* through '31'
* - %%: a literal '%'
*
* @return a pointer to the first character not processed in this
* function call, or NULL in case the function fails to match all of
* the fmt string and therefore an error occurred
*/
char *av_small_strptime(const char *p, const char *fmt, struct tm *dt);
/**
* Attempt to find a specific tag in a URL.
*
* syntax: '?tag1=val1&tag2=val2...'. Little URL decoding is done.
* Return 1 if found.
*/
int av_find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
/**
* Convert the decomposed UTC time in tm to a time_t value.
*/
time_t av_timegm(struct tm *tm);
#endif /* AVUTIL_PARSEUTILS_H */
| 6,683 | 37.413793 | 84 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/crc.h
|
/*
* copyright (c) 2006 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_CRC_H
#define AVUTIL_CRC_H
#include <stdint.h>
#include <stddef.h>
#include "attributes.h"
typedef uint32_t AVCRC;
typedef enum {
AV_CRC_8_ATM,
AV_CRC_16_ANSI,
AV_CRC_16_CCITT,
AV_CRC_32_IEEE,
AV_CRC_32_IEEE_LE, /*< reversed bitorder version of AV_CRC_32_IEEE */
AV_CRC_MAX, /*< Not part of public API! Do not use outside libavutil. */
}AVCRCId;
int av_crc_init(AVCRC *ctx, int le, int bits, uint32_t poly, int ctx_size);
const AVCRC *av_crc_get_table(AVCRCId crc_id);
uint32_t av_crc(const AVCRC *ctx, uint32_t start_crc, const uint8_t *buffer, size_t length) av_pure;
#endif /* AVUTIL_CRC_H */
| 1,477 | 32.590909 | 100 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/common.h
|
/*
* copyright (c) 2006 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* common internal and external API header
*/
#ifndef AVUTIL_COMMON_H
#define AVUTIL_COMMON_H
#include <ctype.h>
#include <errno.h>
#include <inttypes.h>
#include <limits.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "attributes.h"
#include "libavutil/avconfig.h"
#if AV_HAVE_BIGENDIAN
# define AV_NE(be, le) (be)
#else
# define AV_NE(be, le) (le)
#endif
//rounded division & shift
#define RSHIFT(a,b) ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b))
/* assume b>0 */
#define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))
#define FFUDIV(a,b) (((a)>0 ?(a):(a)-(b)+1) / (b))
#define FFUMOD(a,b) ((a)-(b)*FFUDIV(a,b))
#define FFABS(a) ((a) >= 0 ? (a) : (-(a)))
#define FFSIGN(a) ((a) > 0 ? 1 : -1)
#define FFMAX(a,b) ((a) > (b) ? (a) : (b))
#define FFMAX3(a,b,c) FFMAX(FFMAX(a,b),c)
#define FFMIN(a,b) ((a) > (b) ? (b) : (a))
#define FFMIN3(a,b,c) FFMIN(FFMIN(a,b),c)
#define FFSWAP(type,a,b) do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)
#define FF_ARRAY_ELEMS(a) (sizeof(a) / sizeof((a)[0]))
#define FFALIGN(x, a) (((x)+(a)-1)&~((a)-1))
/* misc math functions */
extern const uint8_t ff_log2_tab[256];
/**
* Reverse the order of the bits of an 8-bits unsigned integer.
*/
extern const uint8_t av_reverse[256];
static av_always_inline av_const int av_log2_c(unsigned int v)
{
int n = 0;
if (v & 0xffff0000) {
v >>= 16;
n += 16;
}
if (v & 0xff00) {
v >>= 8;
n += 8;
}
n += ff_log2_tab[v];
return n;
}
static av_always_inline av_const int av_log2_16bit_c(unsigned int v)
{
int n = 0;
if (v & 0xff00) {
v >>= 8;
n += 8;
}
n += ff_log2_tab[v];
return n;
}
#ifdef HAVE_AV_CONFIG_H
# include "config.h"
# include "intmath.h"
#endif
/* Pull in unguarded fallback defines at the end of this file. */
#include "common.h"
/**
* Clip a signed integer value into the amin-amax range.
* @param a value to clip
* @param amin minimum value of the clip range
* @param amax maximum value of the clip range
* @return clipped value
*/
static av_always_inline av_const int av_clip_c(int a, int amin, int amax)
{
if (a < amin) return amin;
else if (a > amax) return amax;
else return a;
}
/**
* Clip a signed integer value into the 0-255 range.
* @param a value to clip
* @return clipped value
*/
static av_always_inline av_const uint8_t av_clip_uint8_c(int a)
{
if (a&(~0xFF)) return (-a)>>31;
else return a;
}
/**
* Clip a signed integer value into the -128,127 range.
* @param a value to clip
* @return clipped value
*/
static av_always_inline av_const int8_t av_clip_int8_c(int a)
{
if ((a+0x80) & ~0xFF) return (a>>31) ^ 0x7F;
else return a;
}
/**
* Clip a signed integer value into the 0-65535 range.
* @param a value to clip
* @return clipped value
*/
static av_always_inline av_const uint16_t av_clip_uint16_c(int a)
{
if (a&(~0xFFFF)) return (-a)>>31;
else return a;
}
/**
* Clip a signed integer value into the -32768,32767 range.
* @param a value to clip
* @return clipped value
*/
static av_always_inline av_const int16_t av_clip_int16_c(int a)
{
if ((a+0x8000) & ~0xFFFF) return (a>>31) ^ 0x7FFF;
else return a;
}
/**
* Clip a signed 64-bit integer value into the -2147483648,2147483647 range.
* @param a value to clip
* @return clipped value
*/
static av_always_inline av_const int32_t av_clipl_int32_c(int64_t a)
{
if ((a+0x80000000u) & ~UINT64_C(0xFFFFFFFF)) return (a>>63) ^ 0x7FFFFFFF;
else return (int32_t)a;
}
/**
* Clip a signed integer to an unsigned power of two range.
* @param a value to clip
* @param p bit position to clip at
* @return clipped value
*/
static av_always_inline av_const unsigned av_clip_uintp2_c(int a, int p)
{
if (a & ~((1<<p) - 1)) return -a >> 31 & ((1<<p) - 1);
else return a;
}
/**
* Add two signed 32-bit values with saturation.
*
* @param a one value
* @param b another value
* @return sum with signed saturation
*/
static av_always_inline int av_sat_add32_c(int a, int b)
{
return av_clipl_int32((int64_t)a + b);
}
/**
* Add a doubled value to another value with saturation at both stages.
*
* @param a first value
* @param b value doubled and added to a
* @return sum with signed saturation
*/
static av_always_inline int av_sat_dadd32_c(int a, int b)
{
return av_sat_add32(a, av_sat_add32(b, b));
}
/**
* Clip a float value into the amin-amax range.
* @param a value to clip
* @param amin minimum value of the clip range
* @param amax maximum value of the clip range
* @return clipped value
*/
static av_always_inline av_const float av_clipf_c(float a, float amin, float amax)
{
if (a < amin) return amin;
else if (a > amax) return amax;
else return a;
}
/** Compute ceil(log2(x)).
* @param x value used to compute ceil(log2(x))
* @return computed ceiling of log2(x)
*/
static av_always_inline av_const int av_ceil_log2_c(int x)
{
return av_log2((x - 1) << 1);
}
/**
* Count number of bits set to one in x
* @param x value to count bits of
* @return the number of bits set to one in x
*/
static av_always_inline av_const int av_popcount_c(uint32_t x)
{
x -= (x >> 1) & 0x55555555;
x = (x & 0x33333333) + ((x >> 2) & 0x33333333);
x = (x + (x >> 4)) & 0x0F0F0F0F;
x += x >> 8;
return (x + (x >> 16)) & 0x3F;
}
/**
* Count number of bits set to one in x
* @param x value to count bits of
* @return the number of bits set to one in x
*/
static av_always_inline av_const int av_popcount64_c(uint64_t x)
{
return av_popcount((uint32_t)x) + av_popcount(x >> 32);
}
#define MKTAG(a,b,c,d) ((a) | ((b) << 8) | ((c) << 16) | ((unsigned)(d) << 24))
#define MKBETAG(a,b,c,d) ((d) | ((c) << 8) | ((b) << 16) | ((unsigned)(a) << 24))
/**
* Convert a UTF-8 character (up to 4 bytes) to its 32-bit UCS-4 encoded form.
*
* @param val Output value, must be an lvalue of type uint32_t.
* @param GET_BYTE Expression reading one byte from the input.
* Evaluated up to 7 times (4 for the currently
* assigned Unicode range). With a memory buffer
* input, this could be *ptr++.
* @param ERROR Expression to be evaluated on invalid input,
* typically a goto statement.
*/
#define GET_UTF8(val, GET_BYTE, ERROR)\
val= GET_BYTE;\
{\
int ones= 7 - av_log2(val ^ 255);\
if(ones==1)\
ERROR\
val&= 127>>ones;\
while(--ones > 0){\
int tmp= GET_BYTE - 128;\
if(tmp>>6)\
ERROR\
val= (val<<6) + tmp;\
}\
}
/**
* Convert a UTF-16 character (2 or 4 bytes) to its 32-bit UCS-4 encoded form.
*
* @param val Output value, must be an lvalue of type uint32_t.
* @param GET_16BIT Expression returning two bytes of UTF-16 data converted
* to native byte order. Evaluated one or two times.
* @param ERROR Expression to be evaluated on invalid input,
* typically a goto statement.
*/
#define GET_UTF16(val, GET_16BIT, ERROR)\
val = GET_16BIT;\
{\
unsigned int hi = val - 0xD800;\
if (hi < 0x800) {\
val = GET_16BIT - 0xDC00;\
if (val > 0x3FFU || hi > 0x3FFU)\
ERROR\
val += (hi<<10) + 0x10000;\
}\
}\
/**
* @def PUT_UTF8(val, tmp, PUT_BYTE)
* Convert a 32-bit Unicode character to its UTF-8 encoded form (up to 4 bytes long).
* @param val is an input-only argument and should be of type uint32_t. It holds
* a UCS-4 encoded Unicode character that is to be converted to UTF-8. If
* val is given as a function it is executed only once.
* @param tmp is a temporary variable and should be of type uint8_t. It
* represents an intermediate value during conversion that is to be
* output by PUT_BYTE.
* @param PUT_BYTE writes the converted UTF-8 bytes to any proper destination.
* It could be a function or a statement, and uses tmp as the input byte.
* For example, PUT_BYTE could be "*output++ = tmp;" PUT_BYTE will be
* executed up to 4 times for values in the valid UTF-8 range and up to
* 7 times in the general case, depending on the length of the converted
* Unicode character.
*/
#define PUT_UTF8(val, tmp, PUT_BYTE)\
{\
int bytes, shift;\
uint32_t in = val;\
if (in < 0x80) {\
tmp = in;\
PUT_BYTE\
} else {\
bytes = (av_log2(in) + 4) / 5;\
shift = (bytes - 1) * 6;\
tmp = (256 - (256 >> bytes)) | (in >> shift);\
PUT_BYTE\
while (shift >= 6) {\
shift -= 6;\
tmp = 0x80 | ((in >> shift) & 0x3f);\
PUT_BYTE\
}\
}\
}
/**
* @def PUT_UTF16(val, tmp, PUT_16BIT)
* Convert a 32-bit Unicode character to its UTF-16 encoded form (2 or 4 bytes).
* @param val is an input-only argument and should be of type uint32_t. It holds
* a UCS-4 encoded Unicode character that is to be converted to UTF-16. If
* val is given as a function it is executed only once.
* @param tmp is a temporary variable and should be of type uint16_t. It
* represents an intermediate value during conversion that is to be
* output by PUT_16BIT.
* @param PUT_16BIT writes the converted UTF-16 data to any proper destination
* in desired endianness. It could be a function or a statement, and uses tmp
* as the input byte. For example, PUT_BYTE could be "*output++ = tmp;"
* PUT_BYTE will be executed 1 or 2 times depending on input character.
*/
#define PUT_UTF16(val, tmp, PUT_16BIT)\
{\
uint32_t in = val;\
if (in < 0x10000) {\
tmp = in;\
PUT_16BIT\
} else {\
tmp = 0xD800 | ((in - 0x10000) >> 10);\
PUT_16BIT\
tmp = 0xDC00 | ((in - 0x10000) & 0x3FF);\
PUT_16BIT\
}\
}\
#include "mem.h"
#ifdef HAVE_AV_CONFIG_H
# include "internal.h"
#endif /* HAVE_AV_CONFIG_H */
#endif /* AVUTIL_COMMON_H */
/*
* The following definitions are outside the multiple inclusion guard
* to ensure they are immediately available in intmath.h.
*/
#ifndef av_log2
# define av_log2 av_log2_c
#endif
#ifndef av_log2_16bit
# define av_log2_16bit av_log2_16bit_c
#endif
#ifndef av_ceil_log2
# define av_ceil_log2 av_ceil_log2_c
#endif
#ifndef av_clip
# define av_clip av_clip_c
#endif
#ifndef av_clip_uint8
# define av_clip_uint8 av_clip_uint8_c
#endif
#ifndef av_clip_int8
# define av_clip_int8 av_clip_int8_c
#endif
#ifndef av_clip_uint16
# define av_clip_uint16 av_clip_uint16_c
#endif
#ifndef av_clip_int16
# define av_clip_int16 av_clip_int16_c
#endif
#ifndef av_clipl_int32
# define av_clipl_int32 av_clipl_int32_c
#endif
#ifndef av_clip_uintp2
# define av_clip_uintp2 av_clip_uintp2_c
#endif
#ifndef av_sat_add32
# define av_sat_add32 av_sat_add32_c
#endif
#ifndef av_sat_dadd32
# define av_sat_dadd32 av_sat_dadd32_c
#endif
#ifndef av_clipf
# define av_clipf av_clipf_c
#endif
#ifndef av_popcount
# define av_popcount av_popcount_c
#endif
#ifndef av_popcount64
# define av_popcount64 av_popcount64_c
#endif
| 12,310 | 27.366359 | 89 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/dict.h
|
/*
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Public dictionary API.
* @deprecated
* AVDictionary is provided for compatibility with libav. It is both in
* implementation as well as API inefficient. It does not scale and is
* extremely slow with large dictionaries.
* It is recommended that new code uses our tree container from tree.c/h
* where applicable, which uses AVL trees to achieve O(log n) performance.
*/
#ifndef AVUTIL_DICT_H
#define AVUTIL_DICT_H
/**
* @addtogroup lavu_dict AVDictionary
* @ingroup lavu_data
*
* @brief Simple key:value store
*
* @{
* Dictionaries are used for storing key:value pairs. To create
* an AVDictionary, simply pass an address of a NULL pointer to
* av_dict_set(). NULL can be used as an empty dictionary wherever
* a pointer to an AVDictionary is required.
* Use av_dict_get() to retrieve an entry or iterate over all
* entries and finally av_dict_free() to free the dictionary
* and all its contents.
*
* @code
* AVDictionary *d = NULL; // "create" an empty dictionary
* av_dict_set(&d, "foo", "bar", 0); // add an entry
*
* char *k = av_strdup("key"); // if your strings are already allocated,
* char *v = av_strdup("value"); // you can avoid copying them like this
* av_dict_set(&d, k, v, AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
*
* AVDictionaryEntry *t = NULL;
* while (t = av_dict_get(d, "", t, AV_DICT_IGNORE_SUFFIX)) {
* <....> // iterate over all entries in d
* }
*
* av_dict_free(&d);
* @endcode
*
*/
#define AV_DICT_MATCH_CASE 1
#define AV_DICT_IGNORE_SUFFIX 2
#define AV_DICT_DONT_STRDUP_KEY 4 /**< Take ownership of a key that's been
allocated with av_malloc() and children. */
#define AV_DICT_DONT_STRDUP_VAL 8 /**< Take ownership of a value that's been
allocated with av_malloc() and chilren. */
#define AV_DICT_DONT_OVERWRITE 16 ///< Don't overwrite existing entries.
#define AV_DICT_APPEND 32 /**< If the entry already exists, append to it. Note that no
delimiter is added, the strings are simply concatenated. */
typedef struct {
char *key;
char *value;
} AVDictionaryEntry;
typedef struct AVDictionary AVDictionary;
/**
* Get a dictionary entry with matching key.
*
* @param prev Set to the previous matching element to find the next.
* If set to NULL the first matching element is returned.
* @param flags Allows case as well as suffix-insensitive comparisons.
* @return Found entry or NULL, changing key or value leads to undefined behavior.
*/
AVDictionaryEntry *
av_dict_get(AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags);
/**
* Get number of entries in dictionary.
*
* @param m dictionary
* @return number of entries in dictionary
*/
int av_dict_count(const AVDictionary *m);
/**
* Set the given entry in *pm, overwriting an existing entry.
*
* @param pm pointer to a pointer to a dictionary struct. If *pm is NULL
* a dictionary struct is allocated and put in *pm.
* @param key entry key to add to *pm (will be av_strduped depending on flags)
* @param value entry value to add to *pm (will be av_strduped depending on flags).
* Passing a NULL value will cause an existing entry to be deleted.
* @return >= 0 on success otherwise an error code <0
*/
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags);
/**
* Copy entries from one AVDictionary struct into another.
* @param dst pointer to a pointer to a AVDictionary struct. If *dst is NULL,
* this function will allocate a struct for you and put it in *dst
* @param src pointer to source AVDictionary struct
* @param flags flags to use when setting entries in *dst
* @note metadata is read using the AV_DICT_IGNORE_SUFFIX flag
*/
void av_dict_copy(AVDictionary **dst, AVDictionary *src, int flags);
/**
* Free all the memory allocated for an AVDictionary struct
* and all keys and values.
*/
void av_dict_free(AVDictionary **m);
/**
* @}
*/
#endif /* AVUTIL_DICT_H */
| 4,934 | 35.286765 | 97 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/rational.h
|
/*
* rational numbers
* Copyright (c) 2003 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* rational numbers
* @author Michael Niedermayer <[email protected]>
*/
#ifndef AVUTIL_RATIONAL_H
#define AVUTIL_RATIONAL_H
#include <stdint.h>
#include <limits.h>
#include "attributes.h"
/**
* @addtogroup lavu_math
* @{
*/
/**
* rational number numerator/denominator
*/
typedef struct AVRational{
int num; ///< numerator
int den; ///< denominator
} AVRational;
/**
* Compare two rationals.
* @param a first rational
* @param b second rational
* @return 0 if a==b, 1 if a>b, -1 if a<b, and INT_MIN if one of the
* values is of the form 0/0
*/
static inline int av_cmp_q(AVRational a, AVRational b){
const int64_t tmp= a.num * (int64_t)b.den - b.num * (int64_t)a.den;
if(tmp) return ((tmp ^ a.den ^ b.den)>>63)|1;
else if(b.den && a.den) return 0;
else if(a.num && b.num) return (a.num>>31) - (b.num>>31);
else return INT_MIN;
}
/**
* Convert rational to double.
* @param a rational to convert
* @return (double) a
*/
static inline double av_q2d(AVRational a){
return a.num / (double) a.den;
}
/**
* Reduce a fraction.
* This is useful for framerate calculations.
* @param dst_num destination numerator
* @param dst_den destination denominator
* @param num source numerator
* @param den source denominator
* @param max the maximum allowed for dst_num & dst_den
* @return 1 if exact, 0 otherwise
*/
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max);
/**
* Multiply two rationals.
* @param b first rational
* @param c second rational
* @return b*c
*/
AVRational av_mul_q(AVRational b, AVRational c) av_const;
/**
* Divide one rational by another.
* @param b first rational
* @param c second rational
* @return b/c
*/
AVRational av_div_q(AVRational b, AVRational c) av_const;
/**
* Add two rationals.
* @param b first rational
* @param c second rational
* @return b+c
*/
AVRational av_add_q(AVRational b, AVRational c) av_const;
/**
* Subtract one rational from another.
* @param b first rational
* @param c second rational
* @return b-c
*/
AVRational av_sub_q(AVRational b, AVRational c) av_const;
/**
* Invert a rational.
* @param q value
* @return 1 / q
*/
static av_always_inline AVRational av_inv_q(AVRational q)
{
AVRational r = { q.den, q.num };
return r;
}
/**
* Convert a double precision floating point number to a rational.
* inf is expressed as {1,0} or {-1,0} depending on the sign.
*
* @param d double to convert
* @param max the maximum allowed numerator and denominator
* @return (AVRational) d
*/
AVRational av_d2q(double d, int max) av_const;
/**
* @return 1 if q1 is nearer to q than q2, -1 if q2 is nearer
* than q1, 0 if they have the same distance.
*/
int av_nearer_q(AVRational q, AVRational q1, AVRational q2);
/**
* Find the nearest value in q_list to q.
* @param q_list an array of rationals terminated by {0, 0}
* @return the index of the nearest value found in the array
*/
int av_find_nearest_q_idx(AVRational q, const AVRational* q_list);
/**
* @}
*/
#endif /* AVUTIL_RATIONAL_H */
| 3,943 | 24.282051 | 81 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/fifo.h
|
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* a very simple circular buffer FIFO implementation
*/
#ifndef AVUTIL_FIFO_H
#define AVUTIL_FIFO_H
#include <stdint.h>
#include "avutil.h"
#include "attributes.h"
typedef struct AVFifoBuffer {
uint8_t *buffer;
uint8_t *rptr, *wptr, *end;
uint32_t rndx, wndx;
} AVFifoBuffer;
/**
* Initialize an AVFifoBuffer.
* @param size of FIFO
* @return AVFifoBuffer or NULL in case of memory allocation failure
*/
AVFifoBuffer *av_fifo_alloc(unsigned int size);
/**
* Free an AVFifoBuffer.
* @param f AVFifoBuffer to free
*/
void av_fifo_free(AVFifoBuffer *f);
/**
* Reset the AVFifoBuffer to the state right after av_fifo_alloc, in particular it is emptied.
* @param f AVFifoBuffer to reset
*/
void av_fifo_reset(AVFifoBuffer *f);
/**
* Return the amount of data in bytes in the AVFifoBuffer, that is the
* amount of data you can read from it.
* @param f AVFifoBuffer to read from
* @return size
*/
int av_fifo_size(AVFifoBuffer *f);
/**
* Return the amount of space in bytes in the AVFifoBuffer, that is the
* amount of data you can write into it.
* @param f AVFifoBuffer to write into
* @return size
*/
int av_fifo_space(AVFifoBuffer *f);
/**
* Feed data from an AVFifoBuffer to a user-supplied callback.
* @param f AVFifoBuffer to read from
* @param buf_size number of bytes to read
* @param func generic read function
* @param dest data destination
*/
int av_fifo_generic_read(AVFifoBuffer *f, void *dest, int buf_size, void (*func)(void*, void*, int));
/**
* Feed data from a user-supplied callback to an AVFifoBuffer.
* @param f AVFifoBuffer to write to
* @param src data source; non-const since it may be used as a
* modifiable context by the function defined in func
* @param size number of bytes to write
* @param func generic write function; the first parameter is src,
* the second is dest_buf, the third is dest_buf_size.
* func must return the number of bytes written to dest_buf, or <= 0 to
* indicate no more data available to write.
* If func is NULL, src is interpreted as a simple byte array for source data.
* @return the number of bytes written to the FIFO
*/
int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size, int (*func)(void*, void*, int));
/**
* Resize an AVFifoBuffer.
* In case of reallocation failure, the old FIFO is kept unchanged.
*
* @param f AVFifoBuffer to resize
* @param size new AVFifoBuffer size in bytes
* @return <0 for failure, >=0 otherwise
*/
int av_fifo_realloc2(AVFifoBuffer *f, unsigned int size);
/**
* Enlarge an AVFifoBuffer.
* In case of reallocation failure, the old FIFO is kept unchanged.
* The new fifo size may be larger than the requested size.
*
* @param f AVFifoBuffer to resize
* @param additional_space the amount of space in bytes to allocate in addition to av_fifo_size()
* @return <0 for failure, >=0 otherwise
*/
int av_fifo_grow(AVFifoBuffer *f, unsigned int additional_space);
/**
* Read and discard the specified amount of data from an AVFifoBuffer.
* @param f AVFifoBuffer to read from
* @param size amount of data to read in bytes
*/
void av_fifo_drain(AVFifoBuffer *f, int size);
/**
* Return a pointer to the data stored in a FIFO buffer at a certain offset.
* The FIFO buffer is not modified.
*
* @param f AVFifoBuffer to peek at, f must be non-NULL
* @param offs an offset in bytes, its absolute value must be less
* than the used buffer size or the returned pointer will
* point outside to the buffer data.
* The used buffer size can be checked with av_fifo_size().
*/
static inline uint8_t *av_fifo_peek2(const AVFifoBuffer *f, int offs)
{
uint8_t *ptr = f->rptr + offs;
if (ptr >= f->end)
ptr = f->buffer + (ptr - f->end);
else if (ptr < f->buffer)
ptr = f->end - (f->buffer - ptr);
return ptr;
}
#if FF_API_AV_FIFO_PEEK
/**
* @deprecated Use av_fifo_peek2() instead.
*/
attribute_deprecated
static inline uint8_t av_fifo_peek(AVFifoBuffer *f, int offs)
{
return *av_fifo_peek2(f, offs);
}
#endif
#endif /* AVUTIL_FIFO_H */
| 4,851 | 30.102564 | 101 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/mathematics.h
|
/*
* copyright (c) 2005 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_MATHEMATICS_H
#define AVUTIL_MATHEMATICS_H
#include <stdint.h>
#include <math.h>
#include "attributes.h"
#include "rational.h"
#include "intfloat.h"
#ifndef M_E
#define M_E 2.7182818284590452354 /* e */
#endif
#ifndef M_LN2
#define M_LN2 0.69314718055994530942 /* log_e 2 */
#endif
#ifndef M_LN10
#define M_LN10 2.30258509299404568402 /* log_e 10 */
#endif
#ifndef M_LOG2_10
#define M_LOG2_10 3.32192809488736234787 /* log_2 10 */
#endif
#ifndef M_PHI
#define M_PHI 1.61803398874989484820 /* phi / golden ratio */
#endif
#ifndef M_PI
#define M_PI 3.14159265358979323846 /* pi */
#endif
#ifndef M_SQRT1_2
#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
#endif
#ifndef M_SQRT2
#define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
#endif
#ifndef NAN
#define NAN av_int2float(0x7fc00000)
#endif
#ifndef INFINITY
#define INFINITY av_int2float(0x7f800000)
#endif
/**
* @addtogroup lavu_math
* @{
*/
enum AVRounding {
AV_ROUND_ZERO = 0, ///< Round toward zero.
AV_ROUND_INF = 1, ///< Round away from zero.
AV_ROUND_DOWN = 2, ///< Round toward -infinity.
AV_ROUND_UP = 3, ///< Round toward +infinity.
AV_ROUND_NEAR_INF = 5, ///< Round to nearest and halfway cases away from zero.
};
/**
* Return the greatest common divisor of a and b.
* If both a and b are 0 or either or both are <0 then behavior is
* undefined.
*/
int64_t av_const av_gcd(int64_t a, int64_t b);
/**
* Rescale a 64-bit integer with rounding to nearest.
* A simple a*b/c isn't possible as it can overflow.
*/
int64_t av_rescale(int64_t a, int64_t b, int64_t c) av_const;
/**
* Rescale a 64-bit integer with specified rounding.
* A simple a*b/c isn't possible as it can overflow.
*/
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding) av_const;
/**
* Rescale a 64-bit integer by 2 rational numbers.
*/
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq) av_const;
/**
* Rescale a 64-bit integer by 2 rational numbers with specified rounding.
*/
int64_t av_rescale_q_rnd(int64_t a, AVRational bq, AVRational cq,
enum AVRounding) av_const;
/**
* Compare 2 timestamps each in its own timebases.
* The result of the function is undefined if one of the timestamps
* is outside the int64_t range when represented in the others timebase.
* @return -1 if ts_a is before ts_b, 1 if ts_a is after ts_b or 0 if they represent the same position
*/
int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b);
/**
* Compare 2 integers modulo mod.
* That is we compare integers a and b for which only the least
* significant log2(mod) bits are known.
*
* @param mod must be a power of 2
* @return a negative value if a is smaller than b
* a positive value if a is greater than b
* 0 if a equals b
*/
int64_t av_compare_mod(uint64_t a, uint64_t b, uint64_t mod);
/**
* @}
*/
#endif /* AVUTIL_MATHEMATICS_H */
| 3,898 | 28.992308 | 102 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/error.h
|
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* error code definitions
*/
#ifndef AVUTIL_ERROR_H
#define AVUTIL_ERROR_H
#include <errno.h>
#include <stddef.h>
/**
* @addtogroup lavu_error
*
* @{
*/
/* error handling */
#if EDOM > 0
#define AVERROR(e) (-(e)) ///< Returns a negative error code from a POSIX error code, to return from library functions.
#define AVUNERROR(e) (-(e)) ///< Returns a POSIX error code from a library function error return value.
#else
/* Some platforms have E* and errno already negated. */
#define AVERROR(e) (e)
#define AVUNERROR(e) (e)
#endif
#define FFERRTAG(a, b, c, d) (-(int)MKTAG(a, b, c, d))
#define AVERROR_BSF_NOT_FOUND FFERRTAG(0xF8,'B','S','F') ///< Bitstream filter not found
#define AVERROR_BUG FFERRTAG( 'B','U','G','!') ///< Internal bug, also see AVERROR_BUG2
#define AVERROR_BUFFER_TOO_SMALL FFERRTAG( 'B','U','F','S') ///< Buffer too small
#define AVERROR_DECODER_NOT_FOUND FFERRTAG(0xF8,'D','E','C') ///< Decoder not found
#define AVERROR_DEMUXER_NOT_FOUND FFERRTAG(0xF8,'D','E','M') ///< Demuxer not found
#define AVERROR_ENCODER_NOT_FOUND FFERRTAG(0xF8,'E','N','C') ///< Encoder not found
#define AVERROR_EOF FFERRTAG( 'E','O','F',' ') ///< End of file
#define AVERROR_EXIT FFERRTAG( 'E','X','I','T') ///< Immediate exit was requested; the called function should not be restarted
#define AVERROR_EXTERNAL FFERRTAG( 'E','X','T',' ') ///< Generic error in an external library
#define AVERROR_FILTER_NOT_FOUND FFERRTAG(0xF8,'F','I','L') ///< Filter not found
#define AVERROR_INVALIDDATA FFERRTAG( 'I','N','D','A') ///< Invalid data found when processing input
#define AVERROR_MUXER_NOT_FOUND FFERRTAG(0xF8,'M','U','X') ///< Muxer not found
#define AVERROR_OPTION_NOT_FOUND FFERRTAG(0xF8,'O','P','T') ///< Option not found
#define AVERROR_PATCHWELCOME FFERRTAG( 'P','A','W','E') ///< Not yet implemented in FFmpeg, patches welcome
#define AVERROR_PROTOCOL_NOT_FOUND FFERRTAG(0xF8,'P','R','O') ///< Protocol not found
#define AVERROR_STREAM_NOT_FOUND FFERRTAG(0xF8,'S','T','R') ///< Stream not found
/**
* This is semantically identical to AVERROR_BUG
* it has been introduced in Libav after our AVERROR_BUG and with a modified value.
*/
#define AVERROR_BUG2 FFERRTAG( 'B','U','G',' ')
#define AVERROR_UNKNOWN FFERRTAG( 'U','N','K','N') ///< Unknown error, typically from an external library
#define AV_ERROR_MAX_STRING_SIZE 64
/**
* Put a description of the AVERROR code errnum in errbuf.
* In case of failure the global variable errno is set to indicate the
* error. Even in case of failure av_strerror() will print a generic
* error message indicating the errnum provided to errbuf.
*
* @param errnum error code to describe
* @param errbuf buffer to which description is written
* @param errbuf_size the size in bytes of errbuf
* @return 0 on success, a negative value if a description for errnum
* cannot be found
*/
int av_strerror(int errnum, char *errbuf, size_t errbuf_size);
/**
* Fill the provided buffer with a string containing an error string
* corresponding to the AVERROR code errnum.
*
* @param errbuf a buffer
* @param errbuf_size size in bytes of errbuf
* @param errnum error code to describe
* @return the buffer in input, filled with the error description
* @see av_strerror()
*/
static inline char *av_make_error_string(char *errbuf, size_t errbuf_size, int errnum)
{
av_strerror(errnum, errbuf, errbuf_size);
return errbuf;
}
/**
* Convenience macro, the return value should be used only directly in
* function arguments but never stand-alone.
*/
#define av_err2str(errnum) \
av_make_error_string((char[AV_ERROR_MAX_STRING_SIZE]){0}, AV_ERROR_MAX_STRING_SIZE, errnum)
/**
* @}
*/
#endif /* AVUTIL_ERROR_H */
| 4,608 | 38.393162 | 140 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/pixdesc.h
|
/*
* pixel format descriptor
* Copyright (c) 2009 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_PIXDESC_H
#define AVUTIL_PIXDESC_H
#include <inttypes.h>
#include "pixfmt.h"
typedef struct AVComponentDescriptor{
uint16_t plane :2; ///< which of the 4 planes contains the component
/**
* Number of elements between 2 horizontally consecutive pixels minus 1.
* Elements are bits for bitstream formats, bytes otherwise.
*/
uint16_t step_minus1 :3;
/**
* Number of elements before the component of the first pixel plus 1.
* Elements are bits for bitstream formats, bytes otherwise.
*/
uint16_t offset_plus1 :3;
uint16_t shift :3; ///< number of least significant bits that must be shifted away to get the value
uint16_t depth_minus1 :4; ///< number of bits in the component minus 1
}AVComponentDescriptor;
/**
* Descriptor that unambiguously describes how the bits of a pixel are
* stored in the up to 4 data planes of an image. It also stores the
* subsampling factors and number of components.
*
* @note This is separate of the colorspace (RGB, YCbCr, YPbPr, JPEG-style YUV
* and all the YUV variants) AVPixFmtDescriptor just stores how values
* are stored not what these values represent.
*/
typedef struct AVPixFmtDescriptor{
const char *name;
uint8_t nb_components; ///< The number of components each pixel has, (1-4)
/**
* Amount to shift the luma width right to find the chroma width.
* For YV12 this is 1 for example.
* chroma_width = -((-luma_width) >> log2_chroma_w)
* The note above is needed to ensure rounding up.
* This value only refers to the chroma components.
*/
uint8_t log2_chroma_w; ///< chroma_width = -((-luma_width )>>log2_chroma_w)
/**
* Amount to shift the luma height right to find the chroma height.
* For YV12 this is 1 for example.
* chroma_height= -((-luma_height) >> log2_chroma_h)
* The note above is needed to ensure rounding up.
* This value only refers to the chroma components.
*/
uint8_t log2_chroma_h;
uint8_t flags;
/**
* Parameters that describe how pixels are packed.
* If the format has 2 or 4 components, then alpha is last.
* If the format has 1 or 2 components, then luma is 0.
* If the format has 3 or 4 components,
* if the RGB flag is set then 0 is red, 1 is green and 2 is blue;
* otherwise 0 is luma, 1 is chroma-U and 2 is chroma-V.
*/
AVComponentDescriptor comp[4];
}AVPixFmtDescriptor;
#define PIX_FMT_BE 1 ///< Pixel format is big-endian.
#define PIX_FMT_PAL 2 ///< Pixel format has a palette in data[1], values are indexes in this palette.
#define PIX_FMT_BITSTREAM 4 ///< All values of a component are bit-wise packed end to end.
#define PIX_FMT_HWACCEL 8 ///< Pixel format is an HW accelerated format.
#define PIX_FMT_PLANAR 16 ///< At least one pixel component is not in the first data plane
#define PIX_FMT_RGB 32 ///< The pixel format contains RGB-like data (as opposed to YUV/grayscale)
/**
* The pixel format is "pseudo-paletted". This means that FFmpeg treats it as
* paletted internally, but the palette is generated by the decoder and is not
* stored in the file.
*/
#define PIX_FMT_PSEUDOPAL 64
/**
* The array of all the pixel format descriptors.
*/
extern const AVPixFmtDescriptor av_pix_fmt_descriptors[];
/**
* Read a line from an image, and write the values of the
* pixel format component c to dst.
*
* @param data the array containing the pointers to the planes of the image
* @param linesize the array containing the linesizes of the image
* @param desc the pixel format descriptor for the image
* @param x the horizontal coordinate of the first pixel to read
* @param y the vertical coordinate of the first pixel to read
* @param w the width of the line to read, that is the number of
* values to write to dst
* @param read_pal_component if not zero and the format is a paletted
* format writes the values corresponding to the palette
* component c in data[1] to dst, rather than the palette indexes in
* data[0]. The behavior is undefined if the format is not paletted.
*/
void av_read_image_line(uint16_t *dst, const uint8_t *data[4], const int linesize[4],
const AVPixFmtDescriptor *desc, int x, int y, int c, int w, int read_pal_component);
/**
* Write the values from src to the pixel format component c of an
* image line.
*
* @param src array containing the values to write
* @param data the array containing the pointers to the planes of the
* image to write into. It is supposed to be zeroed.
* @param linesize the array containing the linesizes of the image
* @param desc the pixel format descriptor for the image
* @param x the horizontal coordinate of the first pixel to write
* @param y the vertical coordinate of the first pixel to write
* @param w the width of the line to write, that is the number of
* values to write to the image line
*/
void av_write_image_line(const uint16_t *src, uint8_t *data[4], const int linesize[4],
const AVPixFmtDescriptor *desc, int x, int y, int c, int w);
/**
* Return the pixel format corresponding to name.
*
* If there is no pixel format with name name, then looks for a
* pixel format with the name corresponding to the native endian
* format of name.
* For example in a little-endian system, first looks for "gray16",
* then for "gray16le".
*
* Finally if no pixel format has been found, returns PIX_FMT_NONE.
*/
enum PixelFormat av_get_pix_fmt(const char *name);
/**
* Return the short name for a pixel format, NULL in case pix_fmt is
* unknown.
*
* @see av_get_pix_fmt(), av_get_pix_fmt_string()
*/
const char *av_get_pix_fmt_name(enum PixelFormat pix_fmt);
/**
* Print in buf the string corresponding to the pixel format with
* number pix_fmt, or an header if pix_fmt is negative.
*
* @param buf the buffer where to write the string
* @param buf_size the size of buf
* @param pix_fmt the number of the pixel format to print the
* corresponding info string, or a negative value to print the
* corresponding header.
*/
char *av_get_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt);
/**
* Return the number of bits per pixel used by the pixel format
* described by pixdesc.
*
* The returned number of bits refers to the number of bits actually
* used for storing the pixel information, that is padding bits are
* not counted.
*/
int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc);
#endif /* AVUTIL_PIXDESC_H */
| 7,457 | 38.882353 | 121 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/eval.h
|
/*
* Copyright (c) 2002 Michael Niedermayer <[email protected]>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* simple arithmetic expression evaluator
*/
#ifndef AVUTIL_EVAL_H
#define AVUTIL_EVAL_H
#include "avutil.h"
typedef struct AVExpr AVExpr;
/**
* Parse and evaluate an expression.
* Note, this is significantly slower than av_expr_eval().
*
* @param res a pointer to a double where is put the result value of
* the expression, or NAN in case of error
* @param s expression as a zero terminated string, for example "1+2^3+5*5+sin(2/3)"
* @param const_names NULL terminated array of zero terminated strings of constant identifiers, for example {"PI", "E", 0}
* @param const_values a zero terminated array of values for the identifiers from const_names
* @param func1_names NULL terminated array of zero terminated strings of funcs1 identifiers
* @param funcs1 NULL terminated array of function pointers for functions which take 1 argument
* @param func2_names NULL terminated array of zero terminated strings of funcs2 identifiers
* @param funcs2 NULL terminated array of function pointers for functions which take 2 arguments
* @param opaque a pointer which will be passed to all functions from funcs1 and funcs2
* @param log_ctx parent logging context
* @return 0 in case of success, a negative value corresponding to an
* AVERROR code otherwise
*/
int av_expr_parse_and_eval(double *res, const char *s,
const char * const *const_names, const double *const_values,
const char * const *func1_names, double (* const *funcs1)(void *, double),
const char * const *func2_names, double (* const *funcs2)(void *, double, double),
void *opaque, int log_offset, void *log_ctx);
/**
* Parse an expression.
*
* @param expr a pointer where is put an AVExpr containing the parsed
* value in case of successful parsing, or NULL otherwise.
* The pointed to AVExpr must be freed with av_expr_free() by the user
* when it is not needed anymore.
* @param s expression as a zero terminated string, for example "1+2^3+5*5+sin(2/3)"
* @param const_names NULL terminated array of zero terminated strings of constant identifiers, for example {"PI", "E", 0}
* @param func1_names NULL terminated array of zero terminated strings of funcs1 identifiers
* @param funcs1 NULL terminated array of function pointers for functions which take 1 argument
* @param func2_names NULL terminated array of zero terminated strings of funcs2 identifiers
* @param funcs2 NULL terminated array of function pointers for functions which take 2 arguments
* @param log_ctx parent logging context
* @return 0 in case of success, a negative value corresponding to an
* AVERROR code otherwise
*/
int av_expr_parse(AVExpr **expr, const char *s,
const char * const *const_names,
const char * const *func1_names, double (* const *funcs1)(void *, double),
const char * const *func2_names, double (* const *funcs2)(void *, double, double),
int log_offset, void *log_ctx);
/**
* Evaluate a previously parsed expression.
*
* @param const_values a zero terminated array of values for the identifiers from av_expr_parse() const_names
* @param opaque a pointer which will be passed to all functions from funcs1 and funcs2
* @return the value of the expression
*/
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque);
/**
* Free a parsed expression previously created with av_expr_parse().
*/
void av_expr_free(AVExpr *e);
#if FF_API_OLD_EVAL_NAMES
/**
* @deprecated Deprecated in favor of av_expr_parse_and_eval().
*/
attribute_deprecated
int av_parse_and_eval_expr(double *res, const char *s,
const char * const *const_names, const double *const_values,
const char * const *func1_names, double (* const *funcs1)(void *, double),
const char * const *func2_names, double (* const *funcs2)(void *, double, double),
void *opaque, int log_offset, void *log_ctx);
/**
* @deprecated Deprecated in favor of av_expr_parse().
*/
attribute_deprecated
int av_parse_expr(AVExpr **expr, const char *s,
const char * const *const_names,
const char * const *func1_names, double (* const *funcs1)(void *, double),
const char * const *func2_names, double (* const *funcs2)(void *, double, double),
int log_offset, void *log_ctx);
/**
* @deprecated Deprecated in favor of av_expr_eval().
*/
attribute_deprecated
double av_eval_expr(AVExpr *e, const double *const_values, void *opaque);
/**
* @deprecated Deprecated in favor of av_expr_free().
*/
attribute_deprecated
void av_free_expr(AVExpr *e);
#endif /* FF_API_OLD_EVAL_NAMES */
/**
* Parse the string in numstr and return its value as a double. If
* the string is empty, contains only whitespaces, or does not contain
* an initial substring that has the expected syntax for a
* floating-point number, no conversion is performed. In this case,
* returns a value of zero and the value returned in tail is the value
* of numstr.
*
* @param numstr a string representing a number, may contain one of
* the International System number postfixes, for example 'K', 'M',
* 'G'. If 'i' is appended after the postfix, powers of 2 are used
* instead of powers of 10. The 'B' postfix multiplies the value for
* 8, and can be appended after another postfix or used alone. This
* allows using for example 'KB', 'MiB', 'G' and 'B' as postfix.
* @param tail if non-NULL puts here the pointer to the char next
* after the last parsed character
*/
double av_strtod(const char *numstr, char **tail);
#endif /* AVUTIL_EVAL_H */
| 6,579 | 43.761905 | 122 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/audioconvert.h
|
/*
* Copyright (c) 2006 Michael Niedermayer <[email protected]>
* Copyright (c) 2008 Peter Ross
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_AUDIOCONVERT_H
#define AVUTIL_AUDIOCONVERT_H
#include <stdint.h>
/**
* @file
* audio conversion routines
*/
/**
* @addtogroup lavu_audio
* @{
*/
/**
* @defgroup channel_masks Audio channel masks
* @{
*/
#define AV_CH_FRONT_LEFT 0x00000001
#define AV_CH_FRONT_RIGHT 0x00000002
#define AV_CH_FRONT_CENTER 0x00000004
#define AV_CH_LOW_FREQUENCY 0x00000008
#define AV_CH_BACK_LEFT 0x00000010
#define AV_CH_BACK_RIGHT 0x00000020
#define AV_CH_FRONT_LEFT_OF_CENTER 0x00000040
#define AV_CH_FRONT_RIGHT_OF_CENTER 0x00000080
#define AV_CH_BACK_CENTER 0x00000100
#define AV_CH_SIDE_LEFT 0x00000200
#define AV_CH_SIDE_RIGHT 0x00000400
#define AV_CH_TOP_CENTER 0x00000800
#define AV_CH_TOP_FRONT_LEFT 0x00001000
#define AV_CH_TOP_FRONT_CENTER 0x00002000
#define AV_CH_TOP_FRONT_RIGHT 0x00004000
#define AV_CH_TOP_BACK_LEFT 0x00008000
#define AV_CH_TOP_BACK_CENTER 0x00010000
#define AV_CH_TOP_BACK_RIGHT 0x00020000
#define AV_CH_STEREO_LEFT 0x20000000 ///< Stereo downmix.
#define AV_CH_STEREO_RIGHT 0x40000000 ///< See AV_CH_STEREO_LEFT.
#define AV_CH_WIDE_LEFT 0x0000000080000000ULL
#define AV_CH_WIDE_RIGHT 0x0000000100000000ULL
#define AV_CH_SURROUND_DIRECT_LEFT 0x0000000200000000ULL
#define AV_CH_SURROUND_DIRECT_RIGHT 0x0000000400000000ULL
/** Channel mask value used for AVCodecContext.request_channel_layout
to indicate that the user requests the channel order of the decoder output
to be the native codec channel order. */
#define AV_CH_LAYOUT_NATIVE 0x8000000000000000ULL
/**
* @}
* @defgroup channel_mask_c Audio channel convenience macros
* @{
* */
#define AV_CH_LAYOUT_MONO (AV_CH_FRONT_CENTER)
#define AV_CH_LAYOUT_STEREO (AV_CH_FRONT_LEFT|AV_CH_FRONT_RIGHT)
#define AV_CH_LAYOUT_2POINT1 (AV_CH_LAYOUT_STEREO|AV_CH_LOW_FREQUENCY)
#define AV_CH_LAYOUT_2_1 (AV_CH_LAYOUT_STEREO|AV_CH_BACK_CENTER)
#define AV_CH_LAYOUT_SURROUND (AV_CH_LAYOUT_STEREO|AV_CH_FRONT_CENTER)
#define AV_CH_LAYOUT_3POINT1 (AV_CH_LAYOUT_SURROUND|AV_CH_LOW_FREQUENCY)
#define AV_CH_LAYOUT_4POINT0 (AV_CH_LAYOUT_SURROUND|AV_CH_BACK_CENTER)
#define AV_CH_LAYOUT_4POINT1 (AV_CH_LAYOUT_4POINT0|AV_CH_LOW_FREQUENCY)
#define AV_CH_LAYOUT_2_2 (AV_CH_LAYOUT_STEREO|AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT)
#define AV_CH_LAYOUT_QUAD (AV_CH_LAYOUT_STEREO|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
#define AV_CH_LAYOUT_5POINT0 (AV_CH_LAYOUT_SURROUND|AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT)
#define AV_CH_LAYOUT_5POINT1 (AV_CH_LAYOUT_5POINT0|AV_CH_LOW_FREQUENCY)
#define AV_CH_LAYOUT_5POINT0_BACK (AV_CH_LAYOUT_SURROUND|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
#define AV_CH_LAYOUT_5POINT1_BACK (AV_CH_LAYOUT_5POINT0_BACK|AV_CH_LOW_FREQUENCY)
#define AV_CH_LAYOUT_6POINT0 (AV_CH_LAYOUT_5POINT0|AV_CH_BACK_CENTER)
#define AV_CH_LAYOUT_6POINT0_FRONT (AV_CH_LAYOUT_2_2|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
#define AV_CH_LAYOUT_HEXAGONAL (AV_CH_LAYOUT_5POINT0_BACK|AV_CH_BACK_CENTER)
#define AV_CH_LAYOUT_6POINT1 (AV_CH_LAYOUT_5POINT1|AV_CH_BACK_CENTER)
#define AV_CH_LAYOUT_6POINT1_BACK (AV_CH_LAYOUT_5POINT1_BACK|AV_CH_BACK_CENTER)
#define AV_CH_LAYOUT_6POINT1_FRONT (AV_CH_LAYOUT_6POINT0_FRONT|AV_CH_LOW_FREQUENCY)
#define AV_CH_LAYOUT_7POINT0 (AV_CH_LAYOUT_5POINT0|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
#define AV_CH_LAYOUT_7POINT0_FRONT (AV_CH_LAYOUT_5POINT0|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
#define AV_CH_LAYOUT_7POINT1 (AV_CH_LAYOUT_5POINT1|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
#define AV_CH_LAYOUT_7POINT1_WIDE (AV_CH_LAYOUT_5POINT1|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
#define AV_CH_LAYOUT_7POINT1_WIDE_BACK (AV_CH_LAYOUT_5POINT1_BACK|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
#define AV_CH_LAYOUT_OCTAGONAL (AV_CH_LAYOUT_5POINT0|AV_CH_BACK_LEFT|AV_CH_BACK_CENTER|AV_CH_BACK_RIGHT)
#define AV_CH_LAYOUT_STEREO_DOWNMIX (AV_CH_STEREO_LEFT|AV_CH_STEREO_RIGHT)
enum AVMatrixEncoding {
AV_MATRIX_ENCODING_NONE,
AV_MATRIX_ENCODING_DOLBY,
AV_MATRIX_ENCODING_DPLII,
AV_MATRIX_ENCODING_NB
};
/**
* @}
*/
/**
* Return a channel layout id that matches name, or 0 if no match is found.
*
* name can be one or several of the following notations,
* separated by '+' or '|':
* - the name of an usual channel layout (mono, stereo, 4.0, quad, 5.0,
* 5.0(side), 5.1, 5.1(side), 7.1, 7.1(wide), downmix);
* - the name of a single channel (FL, FR, FC, LFE, BL, BR, FLC, FRC, BC,
* SL, SR, TC, TFL, TFC, TFR, TBL, TBC, TBR, DL, DR);
* - a number of channels, in decimal, optionally followed by 'c', yielding
* the default channel layout for that number of channels (@see
* av_get_default_channel_layout);
* - a channel layout mask, in hexadecimal starting with "0x" (see the
* AV_CH_* macros).
*
* Example: "stereo+FC" = "2+FC" = "2c+1c" = "0x7"
*/
uint64_t av_get_channel_layout(const char *name);
/**
* Return a description of a channel layout.
* If nb_channels is <= 0, it is guessed from the channel_layout.
*
* @param buf put here the string containing the channel layout
* @param buf_size size in bytes of the buffer
*/
void av_get_channel_layout_string(char *buf, int buf_size, int nb_channels, uint64_t channel_layout);
struct AVBPrint;
/**
* Append a description of a channel layout to a bprint buffer.
*/
void av_bprint_channel_layout(struct AVBPrint *bp, int nb_channels, uint64_t channel_layout);
/**
* Return the number of channels in the channel layout.
*/
int av_get_channel_layout_nb_channels(uint64_t channel_layout);
/**
* Return default channel layout for a given number of channels.
*/
int64_t av_get_default_channel_layout(int nb_channels);
/**
* Get the index of a channel in channel_layout.
*
* @param channel a channel layout describing exactly one channel which must be
* present in channel_layout.
*
* @return index of channel in channel_layout on success, a negative AVERROR
* on error.
*/
int av_get_channel_layout_channel_index(uint64_t channel_layout,
uint64_t channel);
/**
* Get the channel with the given index in channel_layout.
*/
uint64_t av_channel_layout_extract_channel(uint64_t channel_layout, int index);
/**
* Get the name of a given channel.
*
* @return channel name on success, NULL on error.
*/
const char *av_get_channel_name(uint64_t channel);
/**
* Get the description of a given channel.
*
* @param channel a channel layout with a single channel
* @return channel description on success, NULL on error
*/
const char *av_get_channel_description(uint64_t channel);
/**
* Get the value and name of a standard channel layout.
*
* @param[in] index index in an internal list, starting at 0
* @param[out] layout channel layout mask
* @param[out] name name of the layout
* @return 0 if the layout exists,
* <0 if index is beyond the limits
*/
int av_get_standard_channel_layout(unsigned index, uint64_t *layout,
const char **name);
/**
* @}
*/
#endif /* AVUTIL_AUDIOCONVERT_H */
| 8,275 | 38.788462 | 121 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/avconfig.h
|
/* Generated by ffconf */
#ifndef AVUTIL_AVCONFIG_H
#define AVUTIL_AVCONFIG_H
#define AV_HAVE_BIGENDIAN 0
#define AV_HAVE_FAST_UNALIGNED 1
#define AV_HAVE_INCOMPATIBLE_FORK_ABI 0
#endif /* AVUTIL_AVCONFIG_H */
| 210 | 25.375 | 39 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavutil/xtea.h
|
/*
* A 32-bit implementation of the XTEA algorithm
* Copyright (c) 2012 Samuel Pitoiset
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_XTEA_H
#define AVUTIL_XTEA_H
#include <stdint.h>
/**
* @defgroup lavu_xtea XTEA
* @ingroup lavu_crypto
* @{
*/
typedef struct AVXTEA {
uint32_t key[16];
} AVXTEA;
/**
* Initialize an AVXTEA context.
*
* @param ctx an AVXTEA context
* @param key a key of 16 bytes used for encryption/decryption
*/
void av_xtea_init(struct AVXTEA *ctx, const uint8_t key[16]);
/**
* Encrypt or decrypt a buffer using a previously initialized context.
*
* @param ctx an AVXTEA context
* @param dst destination array, can be equal to src
* @param src source array, can be equal to dst
* @param count number of 8 byte blocks
* @param iv initialization vector for CBC mode, if NULL then ECB will be used
* @param decrypt 0 for encryption, 1 for decryption
*/
void av_xtea_crypt(struct AVXTEA *ctx, uint8_t *dst, const uint8_t *src,
int count, uint8_t *iv, int decrypt);
/**
* @}
*/
#endif /* AVUTIL_XTEA_H */
| 1,806 | 27.68254 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavdevice/avdevice.h
|
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVDEVICE_AVDEVICE_H
#define AVDEVICE_AVDEVICE_H
#include "version.h"
/**
* @file
* @ingroup lavd
* Main libavdevice API header
*/
/**
* @defgroup lavd Special devices muxing/demuxing library
* @{
* Libavdevice is a complementary library to @ref libavf "libavformat". It
* provides various "special" platform-specific muxers and demuxers, e.g. for
* grabbing devices, audio capture and playback etc. As a consequence, the
* (de)muxers in libavdevice are of the AVFMT_NOFILE type (they use their own
* I/O functions). The filename passed to avformat_open_input() often does not
* refer to an actually existing file, but has some special device-specific
* meaning - e.g. for x11grab it is the display name.
*
* To use libavdevice, simply call avdevice_register_all() to register all
* compiled muxers and demuxers. They all use standard libavformat API.
* @}
*/
#include "libavformat/avformat.h"
/**
* Return the LIBAVDEVICE_VERSION_INT constant.
*/
unsigned avdevice_version(void);
/**
* Return the libavdevice build-time configuration.
*/
const char *avdevice_configuration(void);
/**
* Return the libavdevice license.
*/
const char *avdevice_license(void);
/**
* Initialize libavdevice and register all the input and output devices.
* @warning This function is not thread safe.
*/
void avdevice_register_all(void);
#endif /* AVDEVICE_AVDEVICE_H */
| 2,156 | 29.814286 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavdevice/version.h
|
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVDEVICE_VERSION_H
#define AVDEVICE_VERSION_H
/**
* @file
* @ingroup lavd
* Libavdevice version macros
*/
#include "libavutil/avutil.h"
#define LIBAVDEVICE_VERSION_MAJOR 54
#define LIBAVDEVICE_VERSION_MINOR 2
#define LIBAVDEVICE_VERSION_MICRO 100
#define LIBAVDEVICE_VERSION_INT AV_VERSION_INT(LIBAVDEVICE_VERSION_MAJOR, \
LIBAVDEVICE_VERSION_MINOR, \
LIBAVDEVICE_VERSION_MICRO)
#define LIBAVDEVICE_VERSION AV_VERSION(LIBAVDEVICE_VERSION_MAJOR, \
LIBAVDEVICE_VERSION_MINOR, \
LIBAVDEVICE_VERSION_MICRO)
#define LIBAVDEVICE_BUILD LIBAVDEVICE_VERSION_INT
/**
* FF_API_* defines may be placed below to indicate public API that will be
* dropped at a future version bump. The defines themselves are not part of
* the public API and may change, break or disappear at any time.
*/
#endif /* AVDEVICE_VERSION_H */
| 1,786 | 35.469388 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavformat/version.h
|
/*
* Version macros.
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVFORMAT_VERSION_H
#define AVFORMAT_VERSION_H
/**
* @file
* @ingroup libavf
* Libavformat version macros
*/
#include "libavutil/avutil.h"
#define LIBAVFORMAT_VERSION_MAJOR 54
#define LIBAVFORMAT_VERSION_MINOR 25
#define LIBAVFORMAT_VERSION_MICRO 105
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \
LIBAVFORMAT_VERSION_MICRO)
#define LIBAVFORMAT_VERSION AV_VERSION(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \
LIBAVFORMAT_VERSION_MICRO)
#define LIBAVFORMAT_BUILD LIBAVFORMAT_VERSION_INT
#define LIBAVFORMAT_IDENT "Lavf" AV_STRINGIFY(LIBAVFORMAT_VERSION)
/**
* FF_API_* defines may be placed below to indicate public API that will be
* dropped at a future version bump. The defines themselves are not part of
* the public API and may change, break or disappear at any time.
*/
#ifndef FF_API_OLD_AVIO
#define FF_API_OLD_AVIO (LIBAVFORMAT_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_PKT_DUMP
#define FF_API_PKT_DUMP (LIBAVFORMAT_VERSION_MAJOR < 54)
#endif
#ifndef FF_API_ALLOC_OUTPUT_CONTEXT
#define FF_API_ALLOC_OUTPUT_CONTEXT (LIBAVFORMAT_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_FORMAT_PARAMETERS
#define FF_API_FORMAT_PARAMETERS (LIBAVFORMAT_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_NEW_STREAM
#define FF_API_NEW_STREAM (LIBAVFORMAT_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_SET_PTS_INFO
#define FF_API_SET_PTS_INFO (LIBAVFORMAT_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_CLOSE_INPUT_FILE
#define FF_API_CLOSE_INPUT_FILE (LIBAVFORMAT_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_APPLEHTTP_PROTO
#define FF_API_APPLEHTTP_PROTO (LIBAVFORMAT_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_READ_PACKET
#define FF_API_READ_PACKET (LIBAVFORMAT_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_INTERLEAVE_PACKET
#define FF_API_INTERLEAVE_PACKET (LIBAVFORMAT_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_AV_GETTIME
#define FF_API_AV_GETTIME (LIBAVFORMAT_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_R_FRAME_RATE
#define FF_API_R_FRAME_RATE (LIBAVFORMAT_VERSION_MAJOR < 55)
#endif
#endif /* AVFORMAT_VERSION_H */
| 3,183 | 34.377778 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavformat/avformat.h
|
/*
* copyright (c) 2001 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVFORMAT_AVFORMAT_H
#define AVFORMAT_AVFORMAT_H
/**
* @file
* @ingroup libavf
* Main libavformat public API header
*/
/**
* @defgroup libavf I/O and Muxing/Demuxing Library
* @{
*
* Libavformat (lavf) is a library for dealing with various media container
* formats. Its main two purposes are demuxing - i.e. splitting a media file
* into component streams, and the reverse process of muxing - writing supplied
* data in a specified container format. It also has an @ref lavf_io
* "I/O module" which supports a number of protocols for accessing the data (e.g.
* file, tcp, http and others). Before using lavf, you need to call
* av_register_all() to register all compiled muxers, demuxers and protocols.
* Unless you are absolutely sure you won't use libavformat's network
* capabilities, you should also call avformat_network_init().
*
* A supported input format is described by an AVInputFormat struct, conversely
* an output format is described by AVOutputFormat. You can iterate over all
* registered input/output formats using the av_iformat_next() /
* av_oformat_next() functions. The protocols layer is not part of the public
* API, so you can only get the names of supported protocols with the
* avio_enum_protocols() function.
*
* Main lavf structure used for both muxing and demuxing is AVFormatContext,
* which exports all information about the file being read or written. As with
* most Libavformat structures, its size is not part of public ABI, so it cannot be
* allocated on stack or directly with av_malloc(). To create an
* AVFormatContext, use avformat_alloc_context() (some functions, like
* avformat_open_input() might do that for you).
*
* Most importantly an AVFormatContext contains:
* @li the @ref AVFormatContext.iformat "input" or @ref AVFormatContext.oformat
* "output" format. It is either autodetected or set by user for input;
* always set by user for output.
* @li an @ref AVFormatContext.streams "array" of AVStreams, which describe all
* elementary streams stored in the file. AVStreams are typically referred to
* using their index in this array.
* @li an @ref AVFormatContext.pb "I/O context". It is either opened by lavf or
* set by user for input, always set by user for output (unless you are dealing
* with an AVFMT_NOFILE format).
*
* @section lavf_options Passing options to (de)muxers
* Lavf allows to configure muxers and demuxers using the @ref avoptions
* mechanism. Generic (format-independent) libavformat options are provided by
* AVFormatContext, they can be examined from a user program by calling
* av_opt_next() / av_opt_find() on an allocated AVFormatContext (or its AVClass
* from avformat_get_class()). Private (format-specific) options are provided by
* AVFormatContext.priv_data if and only if AVInputFormat.priv_class /
* AVOutputFormat.priv_class of the corresponding format struct is non-NULL.
* Further options may be provided by the @ref AVFormatContext.pb "I/O context",
* if its AVClass is non-NULL, and the protocols layer. See the discussion on
* nesting in @ref avoptions documentation to learn how to access those.
*
* @defgroup lavf_decoding Demuxing
* @{
* Demuxers read a media file and split it into chunks of data (@em packets). A
* @ref AVPacket "packet" contains one or more encoded frames which belongs to a
* single elementary stream. In the lavf API this process is represented by the
* avformat_open_input() function for opening a file, av_read_frame() for
* reading a single packet and finally avformat_close_input(), which does the
* cleanup.
*
* @section lavf_decoding_open Opening a media file
* The minimum information required to open a file is its URL or filename, which
* is passed to avformat_open_input(), as in the following code:
* @code
* const char *url = "in.mp3";
* AVFormatContext *s = NULL;
* int ret = avformat_open_input(&s, url, NULL, NULL);
* if (ret < 0)
* abort();
* @endcode
* The above code attempts to allocate an AVFormatContext, open the
* specified file (autodetecting the format) and read the header, exporting the
* information stored there into s. Some formats do not have a header or do not
* store enough information there, so it is recommended that you call the
* avformat_find_stream_info() function which tries to read and decode a few
* frames to find missing information.
*
* In some cases you might want to preallocate an AVFormatContext yourself with
* avformat_alloc_context() and do some tweaking on it before passing it to
* avformat_open_input(). One such case is when you want to use custom functions
* for reading input data instead of lavf internal I/O layer.
* To do that, create your own AVIOContext with avio_alloc_context(), passing
* your reading callbacks to it. Then set the @em pb field of your
* AVFormatContext to newly created AVIOContext.
*
* Since the format of the opened file is in general not known until after
* avformat_open_input() has returned, it is not possible to set demuxer private
* options on a preallocated context. Instead, the options should be passed to
* avformat_open_input() wrapped in an AVDictionary:
* @code
* AVDictionary *options = NULL;
* av_dict_set(&options, "video_size", "640x480", 0);
* av_dict_set(&options, "pixel_format", "rgb24", 0);
*
* if (avformat_open_input(&s, url, NULL, &options) < 0)
* abort();
* av_dict_free(&options);
* @endcode
* This code passes the private options 'video_size' and 'pixel_format' to the
* demuxer. They would be necessary for e.g. the rawvideo demuxer, since it
* cannot know how to interpret raw video data otherwise. If the format turns
* out to be something different than raw video, those options will not be
* recognized by the demuxer and therefore will not be applied. Such unrecognized
* options are then returned in the options dictionary (recognized options are
* consumed). The calling program can handle such unrecognized options as it
* wishes, e.g.
* @code
* AVDictionaryEntry *e;
* if (e = av_dict_get(options, "", NULL, AV_DICT_IGNORE_SUFFIX)) {
* fprintf(stderr, "Option %s not recognized by the demuxer.\n", e->key);
* abort();
* }
* @endcode
*
* After you have finished reading the file, you must close it with
* avformat_close_input(). It will free everything associated with the file.
*
* @section lavf_decoding_read Reading from an opened file
* Reading data from an opened AVFormatContext is done by repeatedly calling
* av_read_frame() on it. Each call, if successful, will return an AVPacket
* containing encoded data for one AVStream, identified by
* AVPacket.stream_index. This packet may be passed straight into the libavcodec
* decoding functions avcodec_decode_video2(), avcodec_decode_audio4() or
* avcodec_decode_subtitle2() if the caller wishes to decode the data.
*
* AVPacket.pts, AVPacket.dts and AVPacket.duration timing information will be
* set if known. They may also be unset (i.e. AV_NOPTS_VALUE for
* pts/dts, 0 for duration) if the stream does not provide them. The timing
* information will be in AVStream.time_base units, i.e. it has to be
* multiplied by the timebase to convert them to seconds.
*
* The packet data belongs to the demuxer and is invalid after the next call to
* av_read_frame(). The user must free the packet with av_free_packet() before
* calling av_read_frame() again or closing the file.
*
* @section lavf_decoding_seek Seeking
* @}
*
* @defgroup lavf_encoding Muxing
* @{
* @}
*
* @defgroup lavf_io I/O Read/Write
* @{
* @}
*
* @defgroup lavf_codec Demuxers
* @{
* @defgroup lavf_codec_native Native Demuxers
* @{
* @}
* @defgroup lavf_codec_wrappers External library wrappers
* @{
* @}
* @}
* @defgroup lavf_protos I/O Protocols
* @{
* @}
* @defgroup lavf_internal Internal
* @{
* @}
* @}
*
*/
#include <time.h>
#include <stdio.h> /* FILE */
#include "libavcodec/avcodec.h"
#include "libavutil/dict.h"
#include "libavutil/log.h"
#include "avio.h"
#include "libavformat/version.h"
#if FF_API_AV_GETTIME
#include "libavutil/time.h"
#endif
struct AVFormatContext;
/**
* @defgroup metadata_api Public Metadata API
* @{
* @ingroup libavf
* The metadata API allows libavformat to export metadata tags to a client
* application when demuxing. Conversely it allows a client application to
* set metadata when muxing.
*
* Metadata is exported or set as pairs of key/value strings in the 'metadata'
* fields of the AVFormatContext, AVStream, AVChapter and AVProgram structs
* using the @ref lavu_dict "AVDictionary" API. Like all strings in FFmpeg,
* metadata is assumed to be UTF-8 encoded Unicode. Note that metadata
* exported by demuxers isn't checked to be valid UTF-8 in most cases.
*
* Important concepts to keep in mind:
* - Keys are unique; there can never be 2 tags with the same key. This is
* also meant semantically, i.e., a demuxer should not knowingly produce
* several keys that are literally different but semantically identical.
* E.g., key=Author5, key=Author6. In this example, all authors must be
* placed in the same tag.
* - Metadata is flat, not hierarchical; there are no subtags. If you
* want to store, e.g., the email address of the child of producer Alice
* and actor Bob, that could have key=alice_and_bobs_childs_email_address.
* - Several modifiers can be applied to the tag name. This is done by
* appending a dash character ('-') and the modifier name in the order
* they appear in the list below -- e.g. foo-eng-sort, not foo-sort-eng.
* - language -- a tag whose value is localized for a particular language
* is appended with the ISO 639-2/B 3-letter language code.
* For example: Author-ger=Michael, Author-eng=Mike
* The original/default language is in the unqualified "Author" tag.
* A demuxer should set a default if it sets any translated tag.
* - sorting -- a modified version of a tag that should be used for
* sorting will have '-sort' appended. E.g. artist="The Beatles",
* artist-sort="Beatles, The".
*
* - Demuxers attempt to export metadata in a generic format, however tags
* with no generic equivalents are left as they are stored in the container.
* Follows a list of generic tag names:
*
@verbatim
album -- name of the set this work belongs to
album_artist -- main creator of the set/album, if different from artist.
e.g. "Various Artists" for compilation albums.
artist -- main creator of the work
comment -- any additional description of the file.
composer -- who composed the work, if different from artist.
copyright -- name of copyright holder.
creation_time-- date when the file was created, preferably in ISO 8601.
date -- date when the work was created, preferably in ISO 8601.
disc -- number of a subset, e.g. disc in a multi-disc collection.
encoder -- name/settings of the software/hardware that produced the file.
encoded_by -- person/group who created the file.
filename -- original name of the file.
genre -- <self-evident>.
language -- main language in which the work is performed, preferably
in ISO 639-2 format. Multiple languages can be specified by
separating them with commas.
performer -- artist who performed the work, if different from artist.
E.g for "Also sprach Zarathustra", artist would be "Richard
Strauss" and performer "London Philharmonic Orchestra".
publisher -- name of the label/publisher.
service_name -- name of the service in broadcasting (channel name).
service_provider -- name of the service provider in broadcasting.
title -- name of the work.
track -- number of this work in the set, can be in form current/total.
variant_bitrate -- the total bitrate of the bitrate variant that the current stream is part of
@endverbatim
*
* Look in the examples section for an application example how to use the Metadata API.
*
* @}
*/
/* packet functions */
/**
* Allocate and read the payload of a packet and initialize its
* fields with default values.
*
* @param pkt packet
* @param size desired payload size
* @return >0 (read size) if OK, AVERROR_xxx otherwise
*/
int av_get_packet(AVIOContext *s, AVPacket *pkt, int size);
/**
* Read data and append it to the current content of the AVPacket.
* If pkt->size is 0 this is identical to av_get_packet.
* Note that this uses av_grow_packet and thus involves a realloc
* which is inefficient. Thus this function should only be used
* when there is no reasonable way to know (an upper bound of)
* the final size.
*
* @param pkt packet
* @param size amount of data to read
* @return >0 (read size) if OK, AVERROR_xxx otherwise, previous data
* will not be lost even if an error occurs.
*/
int av_append_packet(AVIOContext *s, AVPacket *pkt, int size);
/*************************************************/
/* fractional numbers for exact pts handling */
/**
* The exact value of the fractional number is: 'val + num / den'.
* num is assumed to be 0 <= num < den.
*/
typedef struct AVFrac {
int64_t val, num, den;
} AVFrac;
/*************************************************/
/* input/output formats */
struct AVCodecTag;
/**
* This structure contains the data a format has to probe a file.
*/
typedef struct AVProbeData {
const char *filename;
unsigned char *buf; /**< Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero. */
int buf_size; /**< Size of buf except extra allocated bytes */
} AVProbeData;
#define AVPROBE_SCORE_MAX 100 ///< maximum score, half of that is used for file-extension-based detection
#define AVPROBE_PADDING_SIZE 32 ///< extra allocated bytes at the end of the probe buffer
/// Demuxer will use avio_open, no opened file should be provided by the caller.
#define AVFMT_NOFILE 0x0001
#define AVFMT_NEEDNUMBER 0x0002 /**< Needs '%d' in filename. */
#define AVFMT_SHOW_IDS 0x0008 /**< Show format stream IDs numbers. */
#define AVFMT_RAWPICTURE 0x0020 /**< Format wants AVPicture structure for
raw picture data. */
#define AVFMT_GLOBALHEADER 0x0040 /**< Format wants global header. */
#define AVFMT_NOTIMESTAMPS 0x0080 /**< Format does not need / have any timestamps. */
#define AVFMT_GENERIC_INDEX 0x0100 /**< Use generic index building code. */
#define AVFMT_TS_DISCONT 0x0200 /**< Format allows timestamp discontinuities. Note, muxers always require valid (monotone) timestamps */
#define AVFMT_VARIABLE_FPS 0x0400 /**< Format allows variable fps. */
#define AVFMT_NODIMENSIONS 0x0800 /**< Format does not need width/height */
#define AVFMT_NOSTREAMS 0x1000 /**< Format does not require any streams */
#define AVFMT_NOBINSEARCH 0x2000 /**< Format does not allow to fallback to binary search via read_timestamp */
#define AVFMT_NOGENSEARCH 0x4000 /**< Format does not allow to fallback to generic search */
#define AVFMT_NO_BYTE_SEEK 0x8000 /**< Format does not allow seeking by bytes */
#define AVFMT_ALLOW_FLUSH 0x10000 /**< Format allows flushing. If not set, the muxer will not receive a NULL packet in the write_packet function. */
#if LIBAVFORMAT_VERSION_MAJOR <= 54
#define AVFMT_TS_NONSTRICT 0x8020000 //we try to be compatible to the ABIs of ffmpeg and major forks
#else
#define AVFMT_TS_NONSTRICT 0x20000
#endif
/**< Format does not require strictly
increasing timestamps, but they must
still be monotonic */
#define AVFMT_SEEK_TO_PTS 0x4000000 /**< Seeking is based on PTS */
/**
* @addtogroup lavf_encoding
* @{
*/
typedef struct AVOutputFormat {
const char *name;
/**
* Descriptive name for the format, meant to be more human-readable
* than name. You should use the NULL_IF_CONFIG_SMALL() macro
* to define it.
*/
const char *long_name;
const char *mime_type;
const char *extensions; /**< comma-separated filename extensions */
/* output support */
enum AVCodecID audio_codec; /**< default audio codec */
enum AVCodecID video_codec; /**< default video codec */
enum AVCodecID subtitle_codec; /**< default subtitle codec */
/**
* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_RAWPICTURE,
* AVFMT_GLOBALHEADER, AVFMT_NOTIMESTAMPS, AVFMT_VARIABLE_FPS,
* AVFMT_NODIMENSIONS, AVFMT_NOSTREAMS, AVFMT_ALLOW_FLUSH,
* AVFMT_TS_NONSTRICT
*/
int flags;
/**
* List of supported codec_id-codec_tag pairs, ordered by "better
* choice first". The arrays are all terminated by AV_CODEC_ID_NONE.
*/
const struct AVCodecTag * const *codec_tag;
const AVClass *priv_class; ///< AVClass for the private context
/*****************************************************************
* No fields below this line are part of the public API. They
* may not be used outside of libavformat and can be changed and
* removed at will.
* New public fields should be added right above.
*****************************************************************
*/
struct AVOutputFormat *next;
/**
* size of private data so that it can be allocated in the wrapper
*/
int priv_data_size;
int (*write_header)(struct AVFormatContext *);
/**
* Write a packet. If AVFMT_ALLOW_FLUSH is set in flags,
* pkt can be NULL in order to flush data buffered in the muxer.
* When flushing, return 0 if there still is more data to flush,
* or 1 if everything was flushed and there is no more buffered
* data.
*/
int (*write_packet)(struct AVFormatContext *, AVPacket *pkt);
int (*write_trailer)(struct AVFormatContext *);
/**
* Currently only used to set pixel format if not YUV420P.
*/
int (*interleave_packet)(struct AVFormatContext *, AVPacket *out,
AVPacket *in, int flush);
/**
* Test if the given codec can be stored in this container.
*
* @return 1 if the codec is supported, 0 if it is not.
* A negative number if unknown.
* MKTAG('A', 'P', 'I', 'C') if the codec is only supported as AV_DISPOSITION_ATTACHED_PIC
*/
int (*query_codec)(enum AVCodecID id, int std_compliance);
void (*get_output_timestamp)(struct AVFormatContext *s, int stream,
int64_t *dts, int64_t *wall);
} AVOutputFormat;
/**
* @}
*/
/**
* @addtogroup lavf_decoding
* @{
*/
typedef struct AVInputFormat {
/**
* A comma separated list of short names for the format. New names
* may be appended with a minor bump.
*/
const char *name;
/**
* Descriptive name for the format, meant to be more human-readable
* than name. You should use the NULL_IF_CONFIG_SMALL() macro
* to define it.
*/
const char *long_name;
/**
* Can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_SHOW_IDS,
* AVFMT_GENERIC_INDEX, AVFMT_TS_DISCONT, AVFMT_NOBINSEARCH,
* AVFMT_NOGENSEARCH, AVFMT_NO_BYTE_SEEK, AVFMT_SEEK_TO_PTS.
*/
int flags;
/**
* If extensions are defined, then no probe is done. You should
* usually not use extension format guessing because it is not
* reliable enough
*/
const char *extensions;
const struct AVCodecTag * const *codec_tag;
const AVClass *priv_class; ///< AVClass for the private context
/*****************************************************************
* No fields below this line are part of the public API. They
* may not be used outside of libavformat and can be changed and
* removed at will.
* New public fields should be added right above.
*****************************************************************
*/
struct AVInputFormat *next;
/**
* Raw demuxers store their codec ID here.
*/
int raw_codec_id;
/**
* Size of private data so that it can be allocated in the wrapper.
*/
int priv_data_size;
/**
* Tell if a given file has a chance of being parsed as this format.
* The buffer provided is guaranteed to be AVPROBE_PADDING_SIZE bytes
* big so you do not have to check for that unless you need more.
*/
int (*read_probe)(AVProbeData *);
/**
* Read the format header and initialize the AVFormatContext
* structure. Return 0 if OK. Only used in raw format right
* now. 'avformat_new_stream' should be called to create new streams.
*/
int (*read_header)(struct AVFormatContext *);
/**
* Read one packet and put it in 'pkt'. pts and flags are also
* set. 'avformat_new_stream' can be called only if the flag
* AVFMTCTX_NOHEADER is used and only in the calling thread (not in a
* background thread).
* @return 0 on success, < 0 on error.
* When returning an error, pkt must not have been allocated
* or must be freed before returning
*/
int (*read_packet)(struct AVFormatContext *, AVPacket *pkt);
/**
* Close the stream. The AVFormatContext and AVStreams are not
* freed by this function
*/
int (*read_close)(struct AVFormatContext *);
/**
* Seek to a given timestamp relative to the frames in
* stream component stream_index.
* @param stream_index Must not be -1.
* @param flags Selects which direction should be preferred if no exact
* match is available.
* @return >= 0 on success (but not necessarily the new offset)
*/
int (*read_seek)(struct AVFormatContext *,
int stream_index, int64_t timestamp, int flags);
/**
* Get the next timestamp in stream[stream_index].time_base units.
* @return the timestamp or AV_NOPTS_VALUE if an error occurred
*/
int64_t (*read_timestamp)(struct AVFormatContext *s, int stream_index,
int64_t *pos, int64_t pos_limit);
/**
* Start/resume playing - only meaningful if using a network-based format
* (RTSP).
*/
int (*read_play)(struct AVFormatContext *);
/**
* Pause playing - only meaningful if using a network-based format
* (RTSP).
*/
int (*read_pause)(struct AVFormatContext *);
/**
* Seek to timestamp ts.
* Seeking will be done so that the point from which all active streams
* can be presented successfully will be closest to ts and within min/max_ts.
* Active streams are all streams that have AVStream.discard < AVDISCARD_ALL.
*/
int (*read_seek2)(struct AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags);
} AVInputFormat;
/**
* @}
*/
enum AVStreamParseType {
AVSTREAM_PARSE_NONE,
AVSTREAM_PARSE_FULL, /**< full parsing and repack */
AVSTREAM_PARSE_HEADERS, /**< Only parse headers, do not repack. */
AVSTREAM_PARSE_TIMESTAMPS, /**< full parsing and interpolation of timestamps for frames not starting on a packet boundary */
AVSTREAM_PARSE_FULL_ONCE, /**< full parsing and repack of the first frame only, only implemented for H.264 currently */
AVSTREAM_PARSE_FULL_RAW=MKTAG(0,'R','A','W'), /**< full parsing and repack with timestamp and position generation by parser for raw
this assumes that each packet in the file contains no demuxer level headers and
just codec level data, otherwise position generaion would fail */
};
typedef struct AVIndexEntry {
int64_t pos;
int64_t timestamp; /**<
* Timestamp in AVStream.time_base units, preferably the time from which on correctly decoded frames are available
* when seeking to this entry. That means preferable PTS on keyframe based formats.
* But demuxers can choose to store a different timestamp, if it is more convenient for the implementation or nothing better
* is known
*/
#define AVINDEX_KEYFRAME 0x0001
int flags:2;
int size:30; //Yeah, trying to keep the size of this small to reduce memory requirements (it is 24 vs. 32 bytes due to possible 8-byte alignment).
int min_distance; /**< Minimum distance between this and the previous keyframe, used to avoid unneeded searching. */
} AVIndexEntry;
#define AV_DISPOSITION_DEFAULT 0x0001
#define AV_DISPOSITION_DUB 0x0002
#define AV_DISPOSITION_ORIGINAL 0x0004
#define AV_DISPOSITION_COMMENT 0x0008
#define AV_DISPOSITION_LYRICS 0x0010
#define AV_DISPOSITION_KARAOKE 0x0020
/**
* Track should be used during playback by default.
* Useful for subtitle track that should be displayed
* even when user did not explicitly ask for subtitles.
*/
#define AV_DISPOSITION_FORCED 0x0040
#define AV_DISPOSITION_HEARING_IMPAIRED 0x0080 /**< stream for hearing impaired audiences */
#define AV_DISPOSITION_VISUAL_IMPAIRED 0x0100 /**< stream for visual impaired audiences */
#define AV_DISPOSITION_CLEAN_EFFECTS 0x0200 /**< stream without voice */
/**
* The stream is stored in the file as an attached picture/"cover art" (e.g.
* APIC frame in ID3v2). The single packet associated with it will be returned
* among the first few packets read from the file unless seeking takes place.
* It can also be accessed at any time in AVStream.attached_pic.
*/
#define AV_DISPOSITION_ATTACHED_PIC 0x0400
/**
* Stream structure.
* New fields can be added to the end with minor version bumps.
* Removal, reordering and changes to existing fields require a major
* version bump.
* sizeof(AVStream) must not be used outside libav*.
*/
typedef struct AVStream {
int index; /**< stream index in AVFormatContext */
/**
* Format-specific stream ID.
* decoding: set by libavformat
* encoding: set by the user
*/
int id;
/**
* Codec context associated with this stream. Allocated and freed by
* libavformat.
*
* - decoding: The demuxer exports codec information stored in the headers
* here.
* - encoding: The user sets codec information, the muxer writes it to the
* output. Mandatory fields as specified in AVCodecContext
* documentation must be set even if this AVCodecContext is
* not actually used for encoding.
*/
AVCodecContext *codec;
#if FF_API_R_FRAME_RATE
/**
* Real base framerate of the stream.
* This is the lowest framerate with which all timestamps can be
* represented accurately (it is the least common multiple of all
* framerates in the stream). Note, this value is just a guess!
* For example, if the time base is 1/90000 and all frames have either
* approximately 3600 or 1800 timer ticks, then r_frame_rate will be 50/1.
*/
AVRational r_frame_rate;
#endif
void *priv_data;
/**
* encoding: pts generation when outputting stream
*/
struct AVFrac pts;
/**
* This is the fundamental unit of time (in seconds) in terms
* of which frame timestamps are represented.
*
* decoding: set by libavformat
* encoding: set by libavformat in av_write_header. The muxer may use the
* user-provided value of @ref AVCodecContext.time_base "codec->time_base"
* as a hint.
*/
AVRational time_base;
/**
* Decoding: pts of the first frame of the stream in presentation order, in stream time base.
* Only set this if you are absolutely 100% sure that the value you set
* it to really is the pts of the first frame.
* This may be undefined (AV_NOPTS_VALUE).
* @note The ASF header does NOT contain a correct start_time the ASF
* demuxer must NOT set this.
*/
int64_t start_time;
/**
* Decoding: duration of the stream, in stream time base.
* If a source file does not specify a duration, but does specify
* a bitrate, this value will be estimated from bitrate and file size.
*/
int64_t duration;
int64_t nb_frames; ///< number of frames in this stream if known or 0
int disposition; /**< AV_DISPOSITION_* bit field */
enum AVDiscard discard; ///< Selects which packets can be discarded at will and do not need to be demuxed.
/**
* sample aspect ratio (0 if unknown)
* - encoding: Set by user.
* - decoding: Set by libavformat.
*/
AVRational sample_aspect_ratio;
AVDictionary *metadata;
/**
* Average framerate
*/
AVRational avg_frame_rate;
/**
* For streams with AV_DISPOSITION_ATTACHED_PIC disposition, this packet
* will contain the attached picture.
*
* decoding: set by libavformat, must not be modified by the caller.
* encoding: unused
*/
AVPacket attached_pic;
/*****************************************************************
* All fields below this line are not part of the public API. They
* may not be used outside of libavformat and can be changed and
* removed at will.
* New public fields should be added right above.
*****************************************************************
*/
/**
* Stream information used internally by av_find_stream_info()
*/
#define MAX_STD_TIMEBASES (60*12+6)
struct {
int64_t last_dts;
int64_t duration_gcd;
int duration_count;
double duration_error[2][2][MAX_STD_TIMEBASES];
int64_t codec_info_duration;
int found_decoder;
/**
* Those are used for average framerate estimation.
*/
int64_t fps_first_dts;
int fps_first_dts_idx;
int64_t fps_last_dts;
int fps_last_dts_idx;
} *info;
int pts_wrap_bits; /**< number of bits in pts (used for wrapping control) */
// Timestamp generation support:
/**
* Timestamp corresponding to the last dts sync point.
*
* Initialized when AVCodecParserContext.dts_sync_point >= 0 and
* a DTS is received from the underlying container. Otherwise set to
* AV_NOPTS_VALUE by default.
*/
int64_t reference_dts;
int64_t first_dts;
int64_t cur_dts;
int64_t last_IP_pts;
int last_IP_duration;
/**
* Number of packets to buffer for codec probing
*/
#define MAX_PROBE_PACKETS 2500
int probe_packets;
/**
* Number of frames that have been demuxed during av_find_stream_info()
*/
int codec_info_nb_frames;
/**
* Stream Identifier
* This is the MPEG-TS stream identifier +1
* 0 means unknown
*/
int stream_identifier;
int64_t interleaver_chunk_size;
int64_t interleaver_chunk_duration;
/* av_read_frame() support */
enum AVStreamParseType need_parsing;
struct AVCodecParserContext *parser;
/**
* last packet in packet_buffer for this stream when muxing.
*/
struct AVPacketList *last_in_packet_buffer;
AVProbeData probe_data;
#define MAX_REORDER_DELAY 16
int64_t pts_buffer[MAX_REORDER_DELAY+1];
AVIndexEntry *index_entries; /**< Only used if the format does not
support seeking natively. */
int nb_index_entries;
unsigned int index_entries_allocated_size;
/**
* flag to indicate that probing is requested
* NOT PART OF PUBLIC API
*/
int request_probe;
/**
* Indicates that everything up to the next keyframe
* should be discarded.
*/
int skip_to_keyframe;
/**
* Number of samples to skip at the start of the frame decoded from the next packet.
*/
int skip_samples;
/**
* Number of internally decoded frames, used internally in libavformat, do not access
* its lifetime differs from info which is why its not in that structure.
*/
int nb_decoded_frames;
} AVStream;
#define AV_PROGRAM_RUNNING 1
/**
* New fields can be added to the end with minor version bumps.
* Removal, reordering and changes to existing fields require a major
* version bump.
* sizeof(AVProgram) must not be used outside libav*.
*/
typedef struct AVProgram {
int id;
int flags;
enum AVDiscard discard; ///< selects which program to discard and which to feed to the caller
unsigned int *stream_index;
unsigned int nb_stream_indexes;
AVDictionary *metadata;
int program_num;
int pmt_pid;
int pcr_pid;
} AVProgram;
#define AVFMTCTX_NOHEADER 0x0001 /**< signal that no header is present
(streams are added dynamically) */
typedef struct AVChapter {
int id; ///< unique ID to identify the chapter
AVRational time_base; ///< time base in which the start/end timestamps are specified
int64_t start, end; ///< chapter start/end time in time_base units
AVDictionary *metadata;
} AVChapter;
/**
* The duration of a video can be estimated through various ways, and this enum can be used
* to know how the duration was estimated.
*/
enum AVDurationEstimationMethod {
AVFMT_DURATION_FROM_PTS, ///< Duration accurately estimated from PTSes
AVFMT_DURATION_FROM_STREAM, ///< Duration estimated from a stream with a known duration
AVFMT_DURATION_FROM_BITRATE ///< Duration estimated from bitrate (less accurate)
};
/**
* Format I/O context.
* New fields can be added to the end with minor version bumps.
* Removal, reordering and changes to existing fields require a major
* version bump.
* sizeof(AVFormatContext) must not be used outside libav*, use
* avformat_alloc_context() to create an AVFormatContext.
*/
typedef struct AVFormatContext {
/**
* A class for logging and AVOptions. Set by avformat_alloc_context().
* Exports (de)muxer private options if they exist.
*/
const AVClass *av_class;
/**
* Can only be iformat or oformat, not both at the same time.
*
* decoding: set by avformat_open_input().
* encoding: set by the user.
*/
struct AVInputFormat *iformat;
struct AVOutputFormat *oformat;
/**
* Format private data. This is an AVOptions-enabled struct
* if and only if iformat/oformat.priv_class is not NULL.
*/
void *priv_data;
/**
* I/O context.
*
* decoding: either set by the user before avformat_open_input() (then
* the user must close it manually) or set by avformat_open_input().
* encoding: set by the user.
*
* Do NOT set this field if AVFMT_NOFILE flag is set in
* iformat/oformat.flags. In such a case, the (de)muxer will handle
* I/O in some other way and this field will be NULL.
*/
AVIOContext *pb;
/* stream info */
int ctx_flags; /**< Format-specific flags, see AVFMTCTX_xx */
/**
* A list of all streams in the file. New streams are created with
* avformat_new_stream().
*
* decoding: streams are created by libavformat in avformat_open_input().
* If AVFMTCTX_NOHEADER is set in ctx_flags, then new streams may also
* appear in av_read_frame().
* encoding: streams are created by the user before avformat_write_header().
*/
unsigned int nb_streams;
AVStream **streams;
char filename[1024]; /**< input or output filename */
/**
* Decoding: position of the first frame of the component, in
* AV_TIME_BASE fractional seconds. NEVER set this value directly:
* It is deduced from the AVStream values.
*/
int64_t start_time;
/**
* Decoding: duration of the stream, in AV_TIME_BASE fractional
* seconds. Only set this value if you know none of the individual stream
* durations and also do not set any of them. This is deduced from the
* AVStream values if not set.
*/
int64_t duration;
/**
* Decoding: total stream bitrate in bit/s, 0 if not
* available. Never set it directly if the file_size and the
* duration are known as FFmpeg can compute it automatically.
*/
int bit_rate;
unsigned int packet_size;
int max_delay;
int flags;
#define AVFMT_FLAG_GENPTS 0x0001 ///< Generate missing pts even if it requires parsing future frames.
#define AVFMT_FLAG_IGNIDX 0x0002 ///< Ignore index.
#define AVFMT_FLAG_NONBLOCK 0x0004 ///< Do not block when reading packets from input.
#define AVFMT_FLAG_IGNDTS 0x0008 ///< Ignore DTS on frames that contain both DTS & PTS
#define AVFMT_FLAG_NOFILLIN 0x0010 ///< Do not infer any values from other values, just return what is stored in the container
#define AVFMT_FLAG_NOPARSE 0x0020 ///< Do not use AVParsers, you also must set AVFMT_FLAG_NOFILLIN as the fillin code works on frames and no parsing -> no frames. Also seeking to frames can not work if parsing to find frame boundaries has been disabled
#define AVFMT_FLAG_NOBUFFER 0x0040 ///< Do not buffer frames when possible
#define AVFMT_FLAG_CUSTOM_IO 0x0080 ///< The caller has supplied a custom AVIOContext, don't avio_close() it.
#define AVFMT_FLAG_DISCARD_CORRUPT 0x0100 ///< Discard frames marked corrupted
#define AVFMT_FLAG_MP4A_LATM 0x8000 ///< Enable RTP MP4A-LATM payload
#define AVFMT_FLAG_SORT_DTS 0x10000 ///< try to interleave outputted packets by dts (using this flag can slow demuxing down)
#define AVFMT_FLAG_PRIV_OPT 0x20000 ///< Enable use of private options by delaying codec open (this could be made default once all code is converted)
#define AVFMT_FLAG_KEEP_SIDE_DATA 0x40000 ///< Don't merge side data but keep it separate.
/**
* decoding: size of data to probe; encoding: unused.
*/
unsigned int probesize;
/**
* decoding: maximum time (in AV_TIME_BASE units) during which the input should
* be analyzed in avformat_find_stream_info().
*/
int max_analyze_duration;
const uint8_t *key;
int keylen;
unsigned int nb_programs;
AVProgram **programs;
/**
* Forced video codec_id.
* Demuxing: Set by user.
*/
enum AVCodecID video_codec_id;
/**
* Forced audio codec_id.
* Demuxing: Set by user.
*/
enum AVCodecID audio_codec_id;
/**
* Forced subtitle codec_id.
* Demuxing: Set by user.
*/
enum AVCodecID subtitle_codec_id;
/**
* Maximum amount of memory in bytes to use for the index of each stream.
* If the index exceeds this size, entries will be discarded as
* needed to maintain a smaller size. This can lead to slower or less
* accurate seeking (depends on demuxer).
* Demuxers for which a full in-memory index is mandatory will ignore
* this.
* muxing : unused
* demuxing: set by user
*/
unsigned int max_index_size;
/**
* Maximum amount of memory in bytes to use for buffering frames
* obtained from realtime capture devices.
*/
unsigned int max_picture_buffer;
unsigned int nb_chapters;
AVChapter **chapters;
AVDictionary *metadata;
/**
* Start time of the stream in real world time, in microseconds
* since the unix epoch (00:00 1st January 1970). That is, pts=0
* in the stream was captured at this real world time.
* - encoding: Set by user.
* - decoding: Unused.
*/
int64_t start_time_realtime;
/**
* decoding: number of frames used to probe fps
*/
int fps_probe_size;
/**
* Error recognition; higher values will detect more errors but may
* misdetect some more or less valid parts as errors.
* - encoding: unused
* - decoding: Set by user.
*/
int error_recognition;
/**
* Custom interrupt callbacks for the I/O layer.
*
* decoding: set by the user before avformat_open_input().
* encoding: set by the user before avformat_write_header()
* (mainly useful for AVFMT_NOFILE formats). The callback
* should also be passed to avio_open2() if it's used to
* open the file.
*/
AVIOInterruptCB interrupt_callback;
/**
* Flags to enable debugging.
*/
int debug;
#define FF_FDEBUG_TS 0x0001
/**
* Transport stream id.
* This will be moved into demuxer private options. Thus no API/ABI compatibility
*/
int ts_id;
/**
* Audio preload in microseconds.
* Note, not all formats support this and unpredictable things may happen if it is used when not supported.
* - encoding: Set by user via AVOptions (NO direct access)
* - decoding: unused
*/
int audio_preload;
/**
* Max chunk time in microseconds.
* Note, not all formats support this and unpredictable things may happen if it is used when not supported.
* - encoding: Set by user via AVOptions (NO direct access)
* - decoding: unused
*/
int max_chunk_duration;
/**
* Max chunk size in bytes
* Note, not all formats support this and unpredictable things may happen if it is used when not supported.
* - encoding: Set by user via AVOptions (NO direct access)
* - decoding: unused
*/
int max_chunk_size;
/**
* forces the use of wallclock timestamps as pts/dts of packets
* This has undefined results in the presence of B frames.
* - encoding: unused
* - decoding: Set by user via AVOptions (NO direct access)
*/
int use_wallclock_as_timestamps;
/*****************************************************************
* All fields below this line are not part of the public API. They
* may not be used outside of libavformat and can be changed and
* removed at will.
* New public fields should be added right above.
*****************************************************************
*/
/**
* This buffer is only needed when packets were already buffered but
* not decoded, for example to get the codec parameters in MPEG
* streams.
*/
struct AVPacketList *packet_buffer;
struct AVPacketList *packet_buffer_end;
/* av_seek_frame() support */
int64_t data_offset; /**< offset of the first packet */
/**
* Raw packets from the demuxer, prior to parsing and decoding.
* This buffer is used for buffering packets until the codec can
* be identified, as parsing cannot be done without knowing the
* codec.
*/
struct AVPacketList *raw_packet_buffer;
struct AVPacketList *raw_packet_buffer_end;
/**
* Packets split by the parser get queued here.
*/
struct AVPacketList *parse_queue;
struct AVPacketList *parse_queue_end;
/**
* Remaining size available for raw_packet_buffer, in bytes.
*/
#define RAW_PACKET_BUFFER_SIZE 2500000
int raw_packet_buffer_remaining_size;
int avio_flags;
/**
* The duration field can be estimated through various ways, and this field can be used
* to know how the duration was estimated.
*/
enum AVDurationEstimationMethod duration_estimation_method;
} AVFormatContext;
/**
* Returns the method used to set ctx->duration.
*
* @return AVFMT_DURATION_FROM_PTS, AVFMT_DURATION_FROM_STREAM, or AVFMT_DURATION_FROM_BITRATE.
*/
enum AVDurationEstimationMethod av_fmt_ctx_get_duration_estimation_method(const AVFormatContext* ctx);
typedef struct AVPacketList {
AVPacket pkt;
struct AVPacketList *next;
} AVPacketList;
/**
* @defgroup lavf_core Core functions
* @ingroup libavf
*
* Functions for querying libavformat capabilities, allocating core structures,
* etc.
* @{
*/
/**
* Return the LIBAVFORMAT_VERSION_INT constant.
*/
unsigned avformat_version(void);
/**
* Return the libavformat build-time configuration.
*/
const char *avformat_configuration(void);
/**
* Return the libavformat license.
*/
const char *avformat_license(void);
/**
* Initialize libavformat and register all the muxers, demuxers and
* protocols. If you do not call this function, then you can select
* exactly which formats you want to support.
*
* @see av_register_input_format()
* @see av_register_output_format()
* @see av_register_protocol()
*/
void av_register_all(void);
void av_register_input_format(AVInputFormat *format);
void av_register_output_format(AVOutputFormat *format);
/**
* Do global initialization of network components. This is optional,
* but recommended, since it avoids the overhead of implicitly
* doing the setup for each session.
*
* Calling this function will become mandatory if using network
* protocols at some major version bump.
*/
int avformat_network_init(void);
/**
* Undo the initialization done by avformat_network_init.
*/
int avformat_network_deinit(void);
/**
* If f is NULL, returns the first registered input format,
* if f is non-NULL, returns the next registered input format after f
* or NULL if f is the last one.
*/
AVInputFormat *av_iformat_next(AVInputFormat *f);
/**
* If f is NULL, returns the first registered output format,
* if f is non-NULL, returns the next registered output format after f
* or NULL if f is the last one.
*/
AVOutputFormat *av_oformat_next(AVOutputFormat *f);
/**
* Allocate an AVFormatContext.
* avformat_free_context() can be used to free the context and everything
* allocated by the framework within it.
*/
AVFormatContext *avformat_alloc_context(void);
/**
* Free an AVFormatContext and all its streams.
* @param s context to free
*/
void avformat_free_context(AVFormatContext *s);
/**
* Get the AVClass for AVFormatContext. It can be used in combination with
* AV_OPT_SEARCH_FAKE_OBJ for examining options.
*
* @see av_opt_find().
*/
const AVClass *avformat_get_class(void);
/**
* Add a new stream to a media file.
*
* When demuxing, it is called by the demuxer in read_header(). If the
* flag AVFMTCTX_NOHEADER is set in s.ctx_flags, then it may also
* be called in read_packet().
*
* When muxing, should be called by the user before avformat_write_header().
*
* @param c If non-NULL, the AVCodecContext corresponding to the new stream
* will be initialized to use this codec. This is needed for e.g. codec-specific
* defaults to be set, so codec should be provided if it is known.
*
* @return newly created stream or NULL on error.
*/
AVStream *avformat_new_stream(AVFormatContext *s, AVCodec *c);
AVProgram *av_new_program(AVFormatContext *s, int id);
/**
* @}
*/
#if FF_API_PKT_DUMP
attribute_deprecated void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload);
attribute_deprecated void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt,
int dump_payload);
#endif
#if FF_API_ALLOC_OUTPUT_CONTEXT
/**
* @deprecated deprecated in favor of avformat_alloc_output_context2()
*/
attribute_deprecated
AVFormatContext *avformat_alloc_output_context(const char *format,
AVOutputFormat *oformat,
const char *filename);
#endif
/**
* Allocate an AVFormatContext for an output format.
* avformat_free_context() can be used to free the context and
* everything allocated by the framework within it.
*
* @param *ctx is set to the created format context, or to NULL in
* case of failure
* @param oformat format to use for allocating the context, if NULL
* format_name and filename are used instead
* @param format_name the name of output format to use for allocating the
* context, if NULL filename is used instead
* @param filename the name of the filename to use for allocating the
* context, may be NULL
* @return >= 0 in case of success, a negative AVERROR code in case of
* failure
*/
int avformat_alloc_output_context2(AVFormatContext **ctx, AVOutputFormat *oformat,
const char *format_name, const char *filename);
/**
* @addtogroup lavf_decoding
* @{
*/
/**
* Find AVInputFormat based on the short name of the input format.
*/
AVInputFormat *av_find_input_format(const char *short_name);
/**
* Guess the file format.
*
* @param is_opened Whether the file is already opened; determines whether
* demuxers with or without AVFMT_NOFILE are probed.
*/
AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened);
/**
* Guess the file format.
*
* @param is_opened Whether the file is already opened; determines whether
* demuxers with or without AVFMT_NOFILE are probed.
* @param score_max A probe score larger that this is required to accept a
* detection, the variable is set to the actual detection
* score afterwards.
* If the score is <= AVPROBE_SCORE_MAX / 4 it is recommended
* to retry with a larger probe buffer.
*/
AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max);
/**
* Guess the file format.
*
* @param is_opened Whether the file is already opened; determines whether
* demuxers with or without AVFMT_NOFILE are probed.
* @param score_ret The score of the best detection.
*/
AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret);
/**
* Probe a bytestream to determine the input format. Each time a probe returns
* with a score that is too low, the probe buffer size is increased and another
* attempt is made. When the maximum probe size is reached, the input format
* with the highest score is returned.
*
* @param pb the bytestream to probe
* @param fmt the input format is put here
* @param filename the filename of the stream
* @param logctx the log context
* @param offset the offset within the bytestream to probe from
* @param max_probe_size the maximum probe buffer size (zero for default)
* @return 0 in case of success, a negative value corresponding to an
* AVERROR code otherwise
*/
int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
const char *filename, void *logctx,
unsigned int offset, unsigned int max_probe_size);
/**
* Open an input stream and read the header. The codecs are not opened.
* The stream must be closed with av_close_input_file().
*
* @param ps Pointer to user-supplied AVFormatContext (allocated by avformat_alloc_context).
* May be a pointer to NULL, in which case an AVFormatContext is allocated by this
* function and written into ps.
* Note that a user-supplied AVFormatContext will be freed on failure.
* @param filename Name of the stream to open.
* @param fmt If non-NULL, this parameter forces a specific input format.
* Otherwise the format is autodetected.
* @param options A dictionary filled with AVFormatContext and demuxer-private options.
* On return this parameter will be destroyed and replaced with a dict containing
* options that were not found. May be NULL.
*
* @return 0 on success, a negative AVERROR on failure.
*
* @note If you want to use custom IO, preallocate the format context and set its pb field.
*/
int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options);
attribute_deprecated
int av_demuxer_open(AVFormatContext *ic);
#if FF_API_FORMAT_PARAMETERS
/**
* Read packets of a media file to get stream information. This
* is useful for file formats with no headers such as MPEG. This
* function also computes the real framerate in case of MPEG-2 repeat
* frame mode.
* The logical file position is not changed by this function;
* examined packets may be buffered for later processing.
*
* @param ic media file handle
* @return >=0 if OK, AVERROR_xxx on error
* @todo Let the user decide somehow what information is needed so that
* we do not waste time getting stuff the user does not need.
*
* @deprecated use avformat_find_stream_info.
*/
attribute_deprecated
int av_find_stream_info(AVFormatContext *ic);
#endif
/**
* Read packets of a media file to get stream information. This
* is useful for file formats with no headers such as MPEG. This
* function also computes the real framerate in case of MPEG-2 repeat
* frame mode.
* The logical file position is not changed by this function;
* examined packets may be buffered for later processing.
*
* @param ic media file handle
* @param options If non-NULL, an ic.nb_streams long array of pointers to
* dictionaries, where i-th member contains options for
* codec corresponding to i-th stream.
* On return each dictionary will be filled with options that were not found.
* @return >=0 if OK, AVERROR_xxx on error
*
* @note this function isn't guaranteed to open all the codecs, so
* options being non-empty at return is a perfectly normal behavior.
*
* @todo Let the user decide somehow what information is needed so that
* we do not waste time getting stuff the user does not need.
*/
int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options);
/**
* Find the programs which belong to a given stream.
*
* @param ic media file handle
* @param last the last found program, the search will start after this
* program, or from the beginning if it is NULL
* @param s stream index
* @return the next program which belongs to s, NULL if no program is found or
* the last program is not among the programs of ic.
*/
AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s);
/**
* Find the "best" stream in the file.
* The best stream is determined according to various heuristics as the most
* likely to be what the user expects.
* If the decoder parameter is non-NULL, av_find_best_stream will find the
* default decoder for the stream's codec; streams for which no decoder can
* be found are ignored.
*
* @param ic media file handle
* @param type stream type: video, audio, subtitles, etc.
* @param wanted_stream_nb user-requested stream number,
* or -1 for automatic selection
* @param related_stream try to find a stream related (eg. in the same
* program) to this one, or -1 if none
* @param decoder_ret if non-NULL, returns the decoder for the
* selected stream
* @param flags flags; none are currently defined
* @return the non-negative stream number in case of success,
* AVERROR_STREAM_NOT_FOUND if no stream with the requested type
* could be found,
* AVERROR_DECODER_NOT_FOUND if streams were found but no decoder
* @note If av_find_best_stream returns successfully and decoder_ret is not
* NULL, then *decoder_ret is guaranteed to be set to a valid AVCodec.
*/
int av_find_best_stream(AVFormatContext *ic,
enum AVMediaType type,
int wanted_stream_nb,
int related_stream,
AVCodec **decoder_ret,
int flags);
#if FF_API_READ_PACKET
/**
* @deprecated use AVFMT_FLAG_NOFILLIN | AVFMT_FLAG_NOPARSE to read raw
* unprocessed packets
*
* Read a transport packet from a media file.
*
* This function is obsolete and should never be used.
* Use av_read_frame() instead.
*
* @param s media file handle
* @param pkt is filled
* @return 0 if OK, AVERROR_xxx on error
*/
attribute_deprecated
int av_read_packet(AVFormatContext *s, AVPacket *pkt);
#endif
/**
* Return the next frame of a stream.
* This function returns what is stored in the file, and does not validate
* that what is there are valid frames for the decoder. It will split what is
* stored in the file into frames and return one for each call. It will not
* omit invalid data between valid frames so as to give the decoder the maximum
* information possible for decoding.
*
* The returned packet is valid
* until the next av_read_frame() or until av_close_input_file() and
* must be freed with av_free_packet. For video, the packet contains
* exactly one frame. For audio, it contains an integer number of
* frames if each frame has a known fixed size (e.g. PCM or ADPCM
* data). If the audio frames have a variable size (e.g. MPEG audio),
* then it contains one frame.
*
* pkt->pts, pkt->dts and pkt->duration are always set to correct
* values in AVStream.time_base units (and guessed if the format cannot
* provide them). pkt->pts can be AV_NOPTS_VALUE if the video format
* has B-frames, so it is better to rely on pkt->dts if you do not
* decompress the payload.
*
* @return 0 if OK, < 0 on error or end of file
*/
int av_read_frame(AVFormatContext *s, AVPacket *pkt);
/**
* Seek to the keyframe at timestamp.
* 'timestamp' in 'stream_index'.
* @param stream_index If stream_index is (-1), a default
* stream is selected, and timestamp is automatically converted
* from AV_TIME_BASE units to the stream specific time_base.
* @param timestamp Timestamp in AVStream.time_base units
* or, if no stream is specified, in AV_TIME_BASE units.
* @param flags flags which select direction and seeking mode
* @return >= 0 on success
*/
int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp,
int flags);
/**
* Seek to timestamp ts.
* Seeking will be done so that the point from which all active streams
* can be presented successfully will be closest to ts and within min/max_ts.
* Active streams are all streams that have AVStream.discard < AVDISCARD_ALL.
*
* If flags contain AVSEEK_FLAG_BYTE, then all timestamps are in bytes and
* are the file position (this may not be supported by all demuxers).
* If flags contain AVSEEK_FLAG_FRAME, then all timestamps are in frames
* in the stream with stream_index (this may not be supported by all demuxers).
* Otherwise all timestamps are in units of the stream selected by stream_index
* or if stream_index is -1, in AV_TIME_BASE units.
* If flags contain AVSEEK_FLAG_ANY, then non-keyframes are treated as
* keyframes (this may not be supported by all demuxers).
*
* @param stream_index index of the stream which is used as time base reference
* @param min_ts smallest acceptable timestamp
* @param ts target timestamp
* @param max_ts largest acceptable timestamp
* @param flags flags
* @return >=0 on success, error code otherwise
*
* @note This is part of the new seek API which is still under construction.
* Thus do not use this yet. It may change at any time, do not expect
* ABI compatibility yet!
*/
int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags);
/**
* Start playing a network-based stream (e.g. RTSP stream) at the
* current position.
*/
int av_read_play(AVFormatContext *s);
/**
* Pause a network-based stream (e.g. RTSP stream).
*
* Use av_read_play() to resume it.
*/
int av_read_pause(AVFormatContext *s);
#if FF_API_CLOSE_INPUT_FILE
/**
* @deprecated use avformat_close_input()
* Close a media file (but not its codecs).
*
* @param s media file handle
*/
attribute_deprecated
void av_close_input_file(AVFormatContext *s);
#endif
/**
* Close an opened input AVFormatContext. Free it and all its contents
* and set *s to NULL.
*/
void avformat_close_input(AVFormatContext **s);
/**
* @}
*/
#if FF_API_NEW_STREAM
/**
* Add a new stream to a media file.
*
* Can only be called in the read_header() function. If the flag
* AVFMTCTX_NOHEADER is in the format context, then new streams
* can be added in read_packet too.
*
* @param s media file handle
* @param id file-format-dependent stream ID
*/
attribute_deprecated
AVStream *av_new_stream(AVFormatContext *s, int id);
#endif
#if FF_API_SET_PTS_INFO
/**
* @deprecated this function is not supposed to be called outside of lavf
*/
attribute_deprecated
void av_set_pts_info(AVStream *s, int pts_wrap_bits,
unsigned int pts_num, unsigned int pts_den);
#endif
#define AVSEEK_FLAG_BACKWARD 1 ///< seek backward
#define AVSEEK_FLAG_BYTE 2 ///< seeking based on position in bytes
#define AVSEEK_FLAG_ANY 4 ///< seek to any frame, even non-keyframes
#define AVSEEK_FLAG_FRAME 8 ///< seeking based on frame number
/**
* @addtogroup lavf_encoding
* @{
*/
/**
* Allocate the stream private data and write the stream header to
* an output media file.
*
* @param s Media file handle, must be allocated with avformat_alloc_context().
* Its oformat field must be set to the desired output format;
* Its pb field must be set to an already openened AVIOContext.
* @param options An AVDictionary filled with AVFormatContext and muxer-private options.
* On return this parameter will be destroyed and replaced with a dict containing
* options that were not found. May be NULL.
*
* @return 0 on success, negative AVERROR on failure.
*
* @see av_opt_find, av_dict_set, avio_open, av_oformat_next.
*/
int avformat_write_header(AVFormatContext *s, AVDictionary **options);
/**
* Write a packet to an output media file.
*
* The packet shall contain one audio or video frame.
* The packet must be correctly interleaved according to the container
* specification, if not then av_interleaved_write_frame must be used.
*
* @param s media file handle
* @param pkt The packet, which contains the stream_index, buf/buf_size,
* dts/pts, ...
* This can be NULL (at any time, not just at the end), in
* order to immediately flush data buffered within the muxer,
* for muxers that buffer up data internally before writing it
* to the output.
* @return < 0 on error, = 0 if OK, 1 if flushed and there is no more data to flush
*/
int av_write_frame(AVFormatContext *s, AVPacket *pkt);
/**
* Write a packet to an output media file ensuring correct interleaving.
*
* The packet must contain one audio or video frame.
* If the packets are already correctly interleaved, the application should
* call av_write_frame() instead as it is slightly faster. It is also important
* to keep in mind that completely non-interleaved input will need huge amounts
* of memory to interleave with this, so it is preferable to interleave at the
* demuxer level.
*
* @param s media file handle
* @param pkt The packet containing the data to be written. Libavformat takes
* ownership of the data and will free it when it sees fit using the packet's
* This can be NULL (at any time, not just at the end), to flush the
* interleaving queues.
* @ref AVPacket.destruct "destruct" field. The caller must not access the data
* after this function returns, as it may already be freed.
* Packet's @ref AVPacket.stream_index "stream_index" field must be set to the
* index of the corresponding stream in @ref AVFormatContext.streams
* "s.streams".
* It is very strongly recommended that timing information (@ref AVPacket.pts
* "pts", @ref AVPacket.dts "dts" @ref AVPacket.duration "duration") is set to
* correct values.
*
* @return 0 on success, a negative AVERROR on error.
*/
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt);
#if FF_API_INTERLEAVE_PACKET
/**
* @deprecated this function was never meant to be called by the user
* programs.
*/
attribute_deprecated
int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
AVPacket *pkt, int flush);
#endif
/**
* Write the stream trailer to an output media file and free the
* file private data.
*
* May only be called after a successful call to av_write_header.
*
* @param s media file handle
* @return 0 if OK, AVERROR_xxx on error
*/
int av_write_trailer(AVFormatContext *s);
/**
* Return the output format in the list of registered output formats
* which best matches the provided parameters, or return NULL if
* there is no match.
*
* @param short_name if non-NULL checks if short_name matches with the
* names of the registered formats
* @param filename if non-NULL checks if filename terminates with the
* extensions of the registered formats
* @param mime_type if non-NULL checks if mime_type matches with the
* MIME type of the registered formats
*/
AVOutputFormat *av_guess_format(const char *short_name,
const char *filename,
const char *mime_type);
/**
* Guess the codec ID based upon muxer and filename.
*/
enum AVCodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
const char *filename, const char *mime_type,
enum AVMediaType type);
/**
* Get timing information for the data currently output.
* The exact meaning of "currently output" depends on the format.
* It is mostly relevant for devices that have an internal buffer and/or
* work in real time.
* @param s media file handle
* @param stream stream in the media file
* @param dts[out] DTS of the last packet output for the stream, in stream
* time_base units
* @param wall[out] absolute time when that packet whas output,
* in microsecond
* @return 0 if OK, AVERROR(ENOSYS) if the format does not support it
* Note: some formats or devices may not allow to measure dts and wall
* atomically.
*/
int av_get_output_timestamp(struct AVFormatContext *s, int stream,
int64_t *dts, int64_t *wall);
/**
* @}
*/
/**
* @defgroup lavf_misc Utility functions
* @ingroup libavf
* @{
*
* Miscellaneous utility functions related to both muxing and demuxing
* (or neither).
*/
/**
* Send a nice hexadecimal dump of a buffer to the specified file stream.
*
* @param f The file stream pointer where the dump should be sent to.
* @param buf buffer
* @param size buffer size
*
* @see av_hex_dump_log, av_pkt_dump2, av_pkt_dump_log2
*/
void av_hex_dump(FILE *f, uint8_t *buf, int size);
/**
* Send a nice hexadecimal dump of a buffer to the log.
*
* @param avcl A pointer to an arbitrary struct of which the first field is a
* pointer to an AVClass struct.
* @param level The importance level of the message, lower values signifying
* higher importance.
* @param buf buffer
* @param size buffer size
*
* @see av_hex_dump, av_pkt_dump2, av_pkt_dump_log2
*/
void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size);
/**
* Send a nice dump of a packet to the specified file stream.
*
* @param f The file stream pointer where the dump should be sent to.
* @param pkt packet to dump
* @param dump_payload True if the payload must be displayed, too.
* @param st AVStream that the packet belongs to
*/
void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st);
/**
* Send a nice dump of a packet to the log.
*
* @param avcl A pointer to an arbitrary struct of which the first field is a
* pointer to an AVClass struct.
* @param level The importance level of the message, lower values signifying
* higher importance.
* @param pkt packet to dump
* @param dump_payload True if the payload must be displayed, too.
* @param st AVStream that the packet belongs to
*/
void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
AVStream *st);
/**
* Get the AVCodecID for the given codec tag tag.
* If no codec id is found returns AV_CODEC_ID_NONE.
*
* @param tags list of supported codec_id-codec_tag pairs, as stored
* in AVInputFormat.codec_tag and AVOutputFormat.codec_tag
*/
enum AVCodecID av_codec_get_id(const struct AVCodecTag * const *tags, unsigned int tag);
/**
* Get the codec tag for the given codec id id.
* If no codec tag is found returns 0.
*
* @param tags list of supported codec_id-codec_tag pairs, as stored
* in AVInputFormat.codec_tag and AVOutputFormat.codec_tag
*/
unsigned int av_codec_get_tag(const struct AVCodecTag * const *tags, enum AVCodecID id);
int av_find_default_stream_index(AVFormatContext *s);
/**
* Get the index for a specific timestamp.
* @param flags if AVSEEK_FLAG_BACKWARD then the returned index will correspond
* to the timestamp which is <= the requested one, if backward
* is 0, then it will be >=
* if AVSEEK_FLAG_ANY seek to any frame, only keyframes otherwise
* @return < 0 if no such timestamp could be found
*/
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags);
/**
* Add an index entry into a sorted list. Update the entry if the list
* already contains it.
*
* @param timestamp timestamp in the time base of the given stream
*/
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
int size, int distance, int flags);
/**
* Split a URL string into components.
*
* The pointers to buffers for storing individual components may be null,
* in order to ignore that component. Buffers for components not found are
* set to empty strings. If the port is not found, it is set to a negative
* value.
*
* @param proto the buffer for the protocol
* @param proto_size the size of the proto buffer
* @param authorization the buffer for the authorization
* @param authorization_size the size of the authorization buffer
* @param hostname the buffer for the host name
* @param hostname_size the size of the hostname buffer
* @param port_ptr a pointer to store the port number in
* @param path the buffer for the path
* @param path_size the size of the path buffer
* @param url the URL to split
*/
void av_url_split(char *proto, int proto_size,
char *authorization, int authorization_size,
char *hostname, int hostname_size,
int *port_ptr,
char *path, int path_size,
const char *url);
void av_dump_format(AVFormatContext *ic,
int index,
const char *url,
int is_output);
/**
* Return in 'buf' the path with '%d' replaced by a number.
*
* Also handles the '%0nd' format where 'n' is the total number
* of digits and '%%'.
*
* @param buf destination buffer
* @param buf_size destination buffer size
* @param path numbered sequence string
* @param number frame number
* @return 0 if OK, -1 on format error
*/
int av_get_frame_filename(char *buf, int buf_size,
const char *path, int number);
/**
* Check whether filename actually is a numbered sequence generator.
*
* @param filename possible numbered sequence string
* @return 1 if a valid numbered sequence string, 0 otherwise
*/
int av_filename_number_test(const char *filename);
/**
* Generate an SDP for an RTP session.
*
* @param ac array of AVFormatContexts describing the RTP streams. If the
* array is composed by only one context, such context can contain
* multiple AVStreams (one AVStream per RTP stream). Otherwise,
* all the contexts in the array (an AVCodecContext per RTP stream)
* must contain only one AVStream.
* @param n_files number of AVCodecContexts contained in ac
* @param buf buffer where the SDP will be stored (must be allocated by
* the caller)
* @param size the size of the buffer
* @return 0 if OK, AVERROR_xxx on error
*/
int av_sdp_create(AVFormatContext *ac[], int n_files, char *buf, int size);
/**
* Return a positive value if the given filename has one of the given
* extensions, 0 otherwise.
*
* @param extensions a comma-separated list of filename extensions
*/
int av_match_ext(const char *filename, const char *extensions);
/**
* Test if the given container can store a codec.
*
* @param std_compliance standards compliance level, one of FF_COMPLIANCE_*
*
* @return 1 if codec with ID codec_id can be stored in ofmt, 0 if it cannot.
* A negative number if this information is not available.
*/
int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance);
/**
* @defgroup riff_fourcc RIFF FourCCs
* @{
* Get the tables mapping RIFF FourCCs to libavcodec AVCodecIDs. The tables are
* meant to be passed to av_codec_get_id()/av_codec_get_tag() as in the
* following code:
* @code
* uint32_t tag = MKTAG('H', '2', '6', '4');
* const struct AVCodecTag *table[] = { avformat_get_riff_video_tags(), 0 };
* enum AVCodecID id = av_codec_get_id(table, tag);
* @endcode
*/
/**
* @return the table mapping RIFF FourCCs for video to libavcodec AVCodecID.
*/
const struct AVCodecTag *avformat_get_riff_video_tags(void);
/**
* @return the table mapping RIFF FourCCs for audio to AVCodecID.
*/
const struct AVCodecTag *avformat_get_riff_audio_tags(void);
/**
* @}
*/
/**
* Guess the sample aspect ratio of a frame, based on both the stream and the
* frame aspect ratio.
*
* Since the frame aspect ratio is set by the codec but the stream aspect ratio
* is set by the demuxer, these two may not be equal. This function tries to
* return the value that you should use if you would like to display the frame.
*
* Basic logic is to use the stream aspect ratio if it is set to something sane
* otherwise use the frame aspect ratio. This way a container setting, which is
* usually easy to modify can override the coded value in the frames.
*
* @param format the format context which the stream is part of
* @param stream the stream which the frame is part of
* @param frame the frame with the aspect ratio to be determined
* @return the guessed (valid) sample_aspect_ratio, 0/1 if no idea
*/
AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame);
/**
* Check if the stream st contained in s is matched by the stream specifier
* spec.
*
* See the "stream specifiers" chapter in the documentation for the syntax
* of spec.
*
* @return >0 if st is matched by spec;
* 0 if st is not matched by spec;
* AVERROR code if spec is invalid
*
* @note A stream specifier can match several streams in the format.
*/
int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
const char *spec);
void avformat_queue_attached_pictures(AVFormatContext *s);
/**
* @}
*/
#endif /* AVFORMAT_AVFORMAT_H */
| 75,568 | 36.299605 | 257 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavformat/avio.h
|
/*
* copyright (c) 2001 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVFORMAT_AVIO_H
#define AVFORMAT_AVIO_H
/**
* @file
* @ingroup lavf_io
* Buffered I/O operations
*/
#include <stdint.h>
#include "libavutil/common.h"
#include "libavutil/dict.h"
#include "libavutil/log.h"
#include "libavformat/version.h"
#define AVIO_SEEKABLE_NORMAL 0x0001 /**< Seeking works like for a local file */
/**
* Callback for checking whether to abort blocking functions.
* AVERROR_EXIT is returned in this case by the interrupted
* function. During blocking operations, callback is called with
* opaque as parameter. If the callback returns 1, the
* blocking operation will be aborted.
*
* No members can be added to this struct without a major bump, if
* new elements have been added after this struct in AVFormatContext
* or AVIOContext.
*/
typedef struct {
int (*callback)(void*);
void *opaque;
} AVIOInterruptCB;
/**
* Bytestream IO Context.
* New fields can be added to the end with minor version bumps.
* Removal, reordering and changes to existing fields require a major
* version bump.
* sizeof(AVIOContext) must not be used outside libav*.
*
* @note None of the function pointers in AVIOContext should be called
* directly, they should only be set by the client application
* when implementing custom I/O. Normally these are set to the
* function pointers specified in avio_alloc_context()
*/
typedef struct {
/**
* A class for private options.
*
* If this AVIOContext is created by avio_open2(), av_class is set and
* passes the options down to protocols.
*
* If this AVIOContext is manually allocated, then av_class may be set by
* the caller.
*
* warning -- this field can be NULL, be sure to not pass this AVIOContext
* to any av_opt_* functions in that case.
*/
const AVClass *av_class;
unsigned char *buffer; /**< Start of the buffer. */
int buffer_size; /**< Maximum buffer size */
unsigned char *buf_ptr; /**< Current position in the buffer */
unsigned char *buf_end; /**< End of the data, may be less than
buffer+buffer_size if the read function returned
less data than requested, e.g. for streams where
no more data has been received yet. */
void *opaque; /**< A private pointer, passed to the read/write/seek/...
functions. */
int (*read_packet)(void *opaque, uint8_t *buf, int buf_size);
int (*write_packet)(void *opaque, uint8_t *buf, int buf_size);
int64_t (*seek)(void *opaque, int64_t offset, int whence);
int64_t pos; /**< position in the file of the current buffer */
int must_flush; /**< true if the next seek should flush */
int eof_reached; /**< true if eof reached */
int write_flag; /**< true if open for writing */
int max_packet_size;
unsigned long checksum;
unsigned char *checksum_ptr;
unsigned long (*update_checksum)(unsigned long checksum, const uint8_t *buf, unsigned int size);
int error; /**< contains the error code or 0 if no error happened */
/**
* Pause or resume playback for network streaming protocols - e.g. MMS.
*/
int (*read_pause)(void *opaque, int pause);
/**
* Seek to a given timestamp in stream with the specified stream_index.
* Needed for some network streaming protocols which don't support seeking
* to byte position.
*/
int64_t (*read_seek)(void *opaque, int stream_index,
int64_t timestamp, int flags);
/**
* A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
*/
int seekable;
/**
* max filesize, used to limit allocations
* This field is internal to libavformat and access from outside is not allowed.
*/
int64_t maxsize;
/**
* avio_read and avio_write should if possible be satisfied directly
* instead of going through a buffer, and avio_seek will always
* call the underlying seek function directly.
*/
int direct;
/**
* Bytes read statistic
* This field is internal to libavformat and access from outside is not allowed.
*/
int64_t bytes_read;
/**
* seek statistic
* This field is internal to libavformat and access from outside is not allowed.
*/
int seek_count;
} AVIOContext;
/* unbuffered I/O */
/**
* Return AVIO_FLAG_* access flags corresponding to the access permissions
* of the resource in url, or a negative value corresponding to an
* AVERROR code in case of failure. The returned access flags are
* masked by the value in flags.
*
* @note This function is intrinsically unsafe, in the sense that the
* checked resource may change its existence or permission status from
* one call to another. Thus you should not trust the returned value,
* unless you are sure that no other processes are accessing the
* checked resource.
*/
int avio_check(const char *url, int flags);
/**
* Allocate and initialize an AVIOContext for buffered I/O. It must be later
* freed with av_free().
*
* @param buffer Memory block for input/output operations via AVIOContext.
* The buffer must be allocated with av_malloc() and friends.
* @param buffer_size The buffer size is very important for performance.
* For protocols with fixed blocksize it should be set to this blocksize.
* For others a typical size is a cache page, e.g. 4kb.
* @param write_flag Set to 1 if the buffer should be writable, 0 otherwise.
* @param opaque An opaque pointer to user-specific data.
* @param read_packet A function for refilling the buffer, may be NULL.
* @param write_packet A function for writing the buffer contents, may be NULL.
* The function may not change the input buffers content.
* @param seek A function for seeking to specified byte position, may be NULL.
*
* @return Allocated AVIOContext or NULL on failure.
*/
AVIOContext *avio_alloc_context(
unsigned char *buffer,
int buffer_size,
int write_flag,
void *opaque,
int (*read_packet)(void *opaque, uint8_t *buf, int buf_size),
int (*write_packet)(void *opaque, uint8_t *buf, int buf_size),
int64_t (*seek)(void *opaque, int64_t offset, int whence));
void avio_w8(AVIOContext *s, int b);
void avio_write(AVIOContext *s, const unsigned char *buf, int size);
void avio_wl64(AVIOContext *s, uint64_t val);
void avio_wb64(AVIOContext *s, uint64_t val);
void avio_wl32(AVIOContext *s, unsigned int val);
void avio_wb32(AVIOContext *s, unsigned int val);
void avio_wl24(AVIOContext *s, unsigned int val);
void avio_wb24(AVIOContext *s, unsigned int val);
void avio_wl16(AVIOContext *s, unsigned int val);
void avio_wb16(AVIOContext *s, unsigned int val);
/**
* Write a NULL-terminated string.
* @return number of bytes written.
*/
int avio_put_str(AVIOContext *s, const char *str);
/**
* Convert an UTF-8 string to UTF-16LE and write it.
* @return number of bytes written.
*/
int avio_put_str16le(AVIOContext *s, const char *str);
/**
* Passing this as the "whence" parameter to a seek function causes it to
* return the filesize without seeking anywhere. Supporting this is optional.
* If it is not supported then the seek function will return <0.
*/
#define AVSEEK_SIZE 0x10000
/**
* Oring this flag as into the "whence" parameter to a seek function causes it to
* seek by any means (like reopening and linear reading) or other normally unreasonble
* means that can be extreemly slow.
* This may be ignored by the seek code.
*/
#define AVSEEK_FORCE 0x20000
/**
* fseek() equivalent for AVIOContext.
* @return new position or AVERROR.
*/
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence);
/**
* Skip given number of bytes forward
* @return new position or AVERROR.
*/
int64_t avio_skip(AVIOContext *s, int64_t offset);
/**
* ftell() equivalent for AVIOContext.
* @return position or AVERROR.
*/
static av_always_inline int64_t avio_tell(AVIOContext *s)
{
return avio_seek(s, 0, SEEK_CUR);
}
/**
* Get the filesize.
* @return filesize or AVERROR
*/
int64_t avio_size(AVIOContext *s);
/**
* feof() equivalent for AVIOContext.
* @return non zero if and only if end of file
*/
int url_feof(AVIOContext *s);
/** @warning currently size is limited */
int avio_printf(AVIOContext *s, const char *fmt, ...) av_printf_format(2, 3);
/**
* Force flushing of buffered data to the output s.
*
* Force the buffered data to be immediately written to the output,
* without to wait to fill the internal buffer.
*/
void avio_flush(AVIOContext *s);
/**
* Read size bytes from AVIOContext into buf.
* @return number of bytes read or AVERROR
*/
int avio_read(AVIOContext *s, unsigned char *buf, int size);
/**
* @name Functions for reading from AVIOContext
* @{
*
* @note return 0 if EOF, so you cannot use it if EOF handling is
* necessary
*/
int avio_r8 (AVIOContext *s);
unsigned int avio_rl16(AVIOContext *s);
unsigned int avio_rl24(AVIOContext *s);
unsigned int avio_rl32(AVIOContext *s);
uint64_t avio_rl64(AVIOContext *s);
unsigned int avio_rb16(AVIOContext *s);
unsigned int avio_rb24(AVIOContext *s);
unsigned int avio_rb32(AVIOContext *s);
uint64_t avio_rb64(AVIOContext *s);
/**
* @}
*/
/**
* Read a string from pb into buf. The reading will terminate when either
* a NULL character was encountered, maxlen bytes have been read, or nothing
* more can be read from pb. The result is guaranteed to be NULL-terminated, it
* will be truncated if buf is too small.
* Note that the string is not interpreted or validated in any way, it
* might get truncated in the middle of a sequence for multi-byte encodings.
*
* @return number of bytes read (is always <= maxlen).
* If reading ends on EOF or error, the return value will be one more than
* bytes actually read.
*/
int avio_get_str(AVIOContext *pb, int maxlen, char *buf, int buflen);
/**
* Read a UTF-16 string from pb and convert it to UTF-8.
* The reading will terminate when either a null or invalid character was
* encountered or maxlen bytes have been read.
* @return number of bytes read (is always <= maxlen)
*/
int avio_get_str16le(AVIOContext *pb, int maxlen, char *buf, int buflen);
int avio_get_str16be(AVIOContext *pb, int maxlen, char *buf, int buflen);
/**
* @name URL open modes
* The flags argument to avio_open must be one of the following
* constants, optionally ORed with other flags.
* @{
*/
#define AVIO_FLAG_READ 1 /**< read-only */
#define AVIO_FLAG_WRITE 2 /**< write-only */
#define AVIO_FLAG_READ_WRITE (AVIO_FLAG_READ|AVIO_FLAG_WRITE) /**< read-write pseudo flag */
/**
* @}
*/
/**
* Use non-blocking mode.
* If this flag is set, operations on the context will return
* AVERROR(EAGAIN) if they can not be performed immediately.
* If this flag is not set, operations on the context will never return
* AVERROR(EAGAIN).
* Note that this flag does not affect the opening/connecting of the
* context. Connecting a protocol will always block if necessary (e.g. on
* network protocols) but never hang (e.g. on busy devices).
* Warning: non-blocking protocols is work-in-progress; this flag may be
* silently ignored.
*/
#define AVIO_FLAG_NONBLOCK 8
/**
* Use direct mode.
* avio_read and avio_write should if possible be satisfied directly
* instead of going through a buffer, and avio_seek will always
* call the underlying seek function directly.
*/
#define AVIO_FLAG_DIRECT 0x8000
/**
* Create and initialize a AVIOContext for accessing the
* resource indicated by url.
* @note When the resource indicated by url has been opened in
* read+write mode, the AVIOContext can be used only for writing.
*
* @param s Used to return the pointer to the created AVIOContext.
* In case of failure the pointed to value is set to NULL.
* @param flags flags which control how the resource indicated by url
* is to be opened
* @return 0 in case of success, a negative value corresponding to an
* AVERROR code in case of failure
*/
int avio_open(AVIOContext **s, const char *url, int flags);
/**
* Create and initialize a AVIOContext for accessing the
* resource indicated by url.
* @note When the resource indicated by url has been opened in
* read+write mode, the AVIOContext can be used only for writing.
*
* @param s Used to return the pointer to the created AVIOContext.
* In case of failure the pointed to value is set to NULL.
* @param flags flags which control how the resource indicated by url
* is to be opened
* @param int_cb an interrupt callback to be used at the protocols level
* @param options A dictionary filled with protocol-private options. On return
* this parameter will be destroyed and replaced with a dict containing options
* that were not found. May be NULL.
* @return 0 in case of success, a negative value corresponding to an
* AVERROR code in case of failure
*/
int avio_open2(AVIOContext **s, const char *url, int flags,
const AVIOInterruptCB *int_cb, AVDictionary **options);
/**
* Close the resource accessed by the AVIOContext s and free it.
* This function can only be used if s was opened by avio_open().
*
* The internal buffer is automatically flushed before closing the
* resource.
*
* @return 0 on success, an AVERROR < 0 on error.
*/
int avio_close(AVIOContext *s);
/**
* Open a write only memory stream.
*
* @param s new IO context
* @return zero if no error.
*/
int avio_open_dyn_buf(AVIOContext **s);
/**
* Return the written size and a pointer to the buffer. The buffer
* must be freed with av_free().
* Padding of FF_INPUT_BUFFER_PADDING_SIZE is added to the buffer.
*
* @param s IO context
* @param pbuffer pointer to a byte buffer
* @return the length of the byte buffer
*/
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer);
/**
* Iterate through names of available protocols.
*
* @param opaque A private pointer representing current protocol.
* It must be a pointer to NULL on first iteration and will
* be updated by successive calls to avio_enum_protocols.
* @param output If set to 1, iterate over output protocols,
* otherwise over input protocols.
*
* @return A static string containing the name of current protocol or NULL
*/
const char *avio_enum_protocols(void **opaque, int output);
/**
* Pause and resume playing - only meaningful if using a network streaming
* protocol (e.g. MMS).
* @param pause 1 for pause, 0 for resume
*/
int avio_pause(AVIOContext *h, int pause);
/**
* Seek to a given timestamp relative to some component stream.
* Only meaningful if using a network streaming protocol (e.g. MMS.).
* @param stream_index The stream index that the timestamp is relative to.
* If stream_index is (-1) the timestamp should be in AV_TIME_BASE
* units from the beginning of the presentation.
* If a stream_index >= 0 is used and the protocol does not support
* seeking based on component streams, the call will fail.
* @param timestamp timestamp in AVStream.time_base units
* or if there is no stream specified then in AV_TIME_BASE units.
* @param flags Optional combination of AVSEEK_FLAG_BACKWARD, AVSEEK_FLAG_BYTE
* and AVSEEK_FLAG_ANY. The protocol may silently ignore
* AVSEEK_FLAG_BACKWARD and AVSEEK_FLAG_ANY, but AVSEEK_FLAG_BYTE will
* fail if used and not supported.
* @return >= 0 on success
* @see AVInputFormat::read_seek
*/
int64_t avio_seek_time(AVIOContext *h, int stream_index,
int64_t timestamp, int flags);
#endif /* AVFORMAT_AVIO_H */
| 16,725 | 35.281996 | 100 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavcodec/vdpau.h
|
/*
* The Video Decode and Presentation API for UNIX (VDPAU) is used for
* hardware-accelerated decoding of MPEG-1/2, H.264 and VC-1.
*
* Copyright (C) 2008 NVIDIA
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_VDPAU_H
#define AVCODEC_VDPAU_H
/**
* @file
* @ingroup lavc_codec_hwaccel_vdpau
* Public libavcodec VDPAU header.
*/
/**
* @defgroup lavc_codec_hwaccel_vdpau VDPAU Decoder and Renderer
* @ingroup lavc_codec_hwaccel
*
* VDPAU hardware acceleration has two modules
* - VDPAU decoding
* - VDPAU presentation
*
* The VDPAU decoding module parses all headers using FFmpeg
* parsing mechanisms and uses VDPAU for the actual decoding.
*
* As per the current implementation, the actual decoding
* and rendering (API calls) are done as part of the VDPAU
* presentation (vo_vdpau.c) module.
*
* @{
*/
#include <vdpau/vdpau.h>
#include <vdpau/vdpau_x11.h>
/** @brief The videoSurface is used for rendering. */
#define FF_VDPAU_STATE_USED_FOR_RENDER 1
/**
* @brief The videoSurface is needed for reference/prediction.
* The codec manipulates this.
*/
#define FF_VDPAU_STATE_USED_FOR_REFERENCE 2
/**
* @brief This structure is used as a callback between the FFmpeg
* decoder (vd_) and presentation (vo_) module.
* This is used for defining a video frame containing surface,
* picture parameter, bitstream information etc which are passed
* between the FFmpeg decoder and its clients.
*/
struct vdpau_render_state {
VdpVideoSurface surface; ///< Used as rendered surface, never changed.
int state; ///< Holds FF_VDPAU_STATE_* values.
/** Describe size/location of the compressed video data.
Set to 0 when freeing bitstream_buffers. */
int bitstream_buffers_allocated;
int bitstream_buffers_used;
/** The user is responsible for freeing this buffer using av_freep(). */
VdpBitstreamBuffer *bitstream_buffers;
/** picture parameter information for all supported codecs */
union VdpPictureInfo {
VdpPictureInfoH264 h264;
VdpPictureInfoMPEG1Or2 mpeg;
VdpPictureInfoVC1 vc1;
VdpPictureInfoMPEG4Part2 mpeg4;
} info;
};
/* @}*/
#endif /* AVCODEC_VDPAU_H */
| 2,923 | 29.778947 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavcodec/vda.h
|
/*
* VDA HW acceleration
*
* copyright (c) 2011 Sebastien Zwickert
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_VDA_H
#define AVCODEC_VDA_H
/**
* @file
* @ingroup lavc_codec_hwaccel_vda
* Public libavcodec VDA header.
*/
#include "libavcodec/version.h"
#if FF_API_VDA_ASYNC
#include <pthread.h>
#endif
#include <stdint.h>
// emmintrin.h is unable to compile with -std=c99 -Werror=missing-prototypes
// http://openradar.appspot.com/8026390
#undef __GNUC_STDC_INLINE__
#define Picture QuickdrawPicture
#include <VideoDecodeAcceleration/VDADecoder.h>
#undef Picture
/**
* @defgroup lavc_codec_hwaccel_vda VDA
* @ingroup lavc_codec_hwaccel
*
* @{
*/
#if FF_API_VDA_ASYNC
/**
* This structure is used to store decoded frame information and data.
*
* @deprecated Use synchronous decoding mode.
*/
typedef struct {
/**
* The PTS of the frame.
*
* - encoding: unused
* - decoding: Set/Unset by libavcodec.
*/
int64_t pts;
/**
* The CoreVideo buffer that contains the decoded data.
*
* - encoding: unused
* - decoding: Set/Unset by libavcodec.
*/
CVPixelBufferRef cv_buffer;
/**
* A pointer to the next frame.
*
* - encoding: unused
* - decoding: Set/Unset by libavcodec.
*/
struct vda_frame *next_frame;
} vda_frame;
#endif
/**
* This structure is used to provide the necessary configurations and data
* to the VDA FFmpeg HWAccel implementation.
*
* The application must make it available as AVCodecContext.hwaccel_context.
*/
struct vda_context {
/**
* VDA decoder object.
*
* - encoding: unused
* - decoding: Set/Unset by libavcodec.
*/
VDADecoder decoder;
/**
* The Core Video pixel buffer that contains the current image data.
*
* encoding: unused
* decoding: Set by libavcodec. Unset by user.
*/
CVPixelBufferRef cv_buffer;
/**
* Use the hardware decoder in synchronous mode.
*
* encoding: unused
* decoding: Set by user.
*/
int use_sync_decoding;
#if FF_API_VDA_ASYNC
/**
* VDA frames queue ordered by presentation timestamp.
*
* @deprecated Use synchronous decoding mode.
*
* - encoding: unused
* - decoding: Set/Unset by libavcodec.
*/
vda_frame *queue;
/**
* Mutex for locking queue operations.
*
* @deprecated Use synchronous decoding mode.
*
* - encoding: unused
* - decoding: Set/Unset by libavcodec.
*/
pthread_mutex_t queue_mutex;
#endif
/**
* The frame width.
*
* - encoding: unused
* - decoding: Set/Unset by user.
*/
int width;
/**
* The frame height.
*
* - encoding: unused
* - decoding: Set/Unset by user.
*/
int height;
/**
* The frame format.
*
* - encoding: unused
* - decoding: Set/Unset by user.
*/
int format;
/**
* The pixel format for output image buffers.
*
* - encoding: unused
* - decoding: Set/Unset by user.
*/
OSType cv_pix_fmt_type;
/**
* The current bitstream buffer.
*
* - encoding: unused
* - decoding: Set/Unset by libavcodec.
*/
uint8_t *priv_bitstream;
/**
* The current size of the bitstream.
*
* - encoding: unused
* - decoding: Set/Unset by libavcodec.
*/
int priv_bitstream_size;
/**
* The reference size used for fast reallocation.
*
* - encoding: unused
* - decoding: Set/Unset by libavcodec.
*/
int priv_allocated_size;
};
/** Create the video decoder. */
int ff_vda_create_decoder(struct vda_context *vda_ctx,
uint8_t *extradata,
int extradata_size);
/** Destroy the video decoder. */
int ff_vda_destroy_decoder(struct vda_context *vda_ctx);
#if FF_API_VDA_ASYNC
/**
* Return the top frame of the queue.
*
* @deprecated Use synchronous decoding mode.
*/
vda_frame *ff_vda_queue_pop(struct vda_context *vda_ctx);
/**
* Release the given frame.
*
* @deprecated Use synchronous decoding mode.
*/
void ff_vda_release_vda_frame(vda_frame *frame);
#endif
/**
* @}
*/
#endif /* AVCODEC_VDA_H */
| 5,154 | 21.709251 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavcodec/avcodec.h
|
/*
* copyright (c) 2001 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_AVCODEC_H
#define AVCODEC_AVCODEC_H
/**
* @file
* external API header
*/
#include <errno.h>
#include "libavutil/samplefmt.h"
#include "libavutil/avutil.h"
#include "libavutil/cpu.h"
#include "libavutil/dict.h"
#include "libavutil/log.h"
#include "libavutil/pixfmt.h"
#include "libavutil/rational.h"
#include "libavutil/audioconvert.h"
#include "libavcodec/version.h"
/**
* @defgroup libavc Encoding/Decoding Library
* @{
*
* @defgroup lavc_decoding Decoding
* @{
* @}
*
* @defgroup lavc_encoding Encoding
* @{
* @}
*
* @defgroup lavc_codec Codecs
* @{
* @defgroup lavc_codec_native Native Codecs
* @{
* @}
* @defgroup lavc_codec_wrappers External library wrappers
* @{
* @}
* @defgroup lavc_codec_hwaccel Hardware Accelerators bridge
* @{
* @}
* @}
* @defgroup lavc_internal Internal
* @{
* @}
* @}
*
*/
/**
* @defgroup lavc_core Core functions/structures.
* @ingroup libavc
*
* Basic definitions, functions for querying libavcodec capabilities,
* allocating core structures, etc.
* @{
*/
/**
* Identify the syntax and semantics of the bitstream.
* The principle is roughly:
* Two decoders with the same ID can decode the same streams.
* Two encoders with the same ID can encode compatible streams.
* There may be slight deviations from the principle due to implementation
* details.
*
* If you add a codec ID to this list, add it so that
* 1. no value of a existing codec ID changes (that would break ABI),
* 2. Give it a value which when taken as ASCII is recognized uniquely by a human as this specific codec.
* This ensures that 2 forks can independently add AVCodecIDs without producing conflicts.
*
* After adding new codec IDs, do not forget to add an entry to the codec
* descriptor list and bump libavcodec minor version.
*/
enum AVCodecID {
AV_CODEC_ID_NONE,
/* video codecs */
AV_CODEC_ID_MPEG1VIDEO,
AV_CODEC_ID_MPEG2VIDEO, ///< preferred ID for MPEG-1/2 video decoding
AV_CODEC_ID_MPEG2VIDEO_XVMC,
AV_CODEC_ID_H261,
AV_CODEC_ID_H263,
AV_CODEC_ID_RV10,
AV_CODEC_ID_RV20,
AV_CODEC_ID_MJPEG,
AV_CODEC_ID_MJPEGB,
AV_CODEC_ID_LJPEG,
AV_CODEC_ID_SP5X,
AV_CODEC_ID_JPEGLS,
AV_CODEC_ID_MPEG4,
AV_CODEC_ID_RAWVIDEO,
AV_CODEC_ID_MSMPEG4V1,
AV_CODEC_ID_MSMPEG4V2,
AV_CODEC_ID_MSMPEG4V3,
AV_CODEC_ID_WMV1,
AV_CODEC_ID_WMV2,
AV_CODEC_ID_H263P,
AV_CODEC_ID_H263I,
AV_CODEC_ID_FLV1,
AV_CODEC_ID_SVQ1,
AV_CODEC_ID_SVQ3,
AV_CODEC_ID_DVVIDEO,
AV_CODEC_ID_HUFFYUV,
AV_CODEC_ID_CYUV,
AV_CODEC_ID_H264,
AV_CODEC_ID_INDEO3,
AV_CODEC_ID_VP3,
AV_CODEC_ID_THEORA,
AV_CODEC_ID_ASV1,
AV_CODEC_ID_ASV2,
AV_CODEC_ID_FFV1,
AV_CODEC_ID_4XM,
AV_CODEC_ID_VCR1,
AV_CODEC_ID_CLJR,
AV_CODEC_ID_MDEC,
AV_CODEC_ID_ROQ,
AV_CODEC_ID_INTERPLAY_VIDEO,
AV_CODEC_ID_XAN_WC3,
AV_CODEC_ID_XAN_WC4,
AV_CODEC_ID_RPZA,
AV_CODEC_ID_CINEPAK,
AV_CODEC_ID_WS_VQA,
AV_CODEC_ID_MSRLE,
AV_CODEC_ID_MSVIDEO1,
AV_CODEC_ID_IDCIN,
AV_CODEC_ID_8BPS,
AV_CODEC_ID_SMC,
AV_CODEC_ID_FLIC,
AV_CODEC_ID_TRUEMOTION1,
AV_CODEC_ID_VMDVIDEO,
AV_CODEC_ID_MSZH,
AV_CODEC_ID_ZLIB,
AV_CODEC_ID_QTRLE,
AV_CODEC_ID_SNOW,
AV_CODEC_ID_TSCC,
AV_CODEC_ID_ULTI,
AV_CODEC_ID_QDRAW,
AV_CODEC_ID_VIXL,
AV_CODEC_ID_QPEG,
AV_CODEC_ID_PNG,
AV_CODEC_ID_PPM,
AV_CODEC_ID_PBM,
AV_CODEC_ID_PGM,
AV_CODEC_ID_PGMYUV,
AV_CODEC_ID_PAM,
AV_CODEC_ID_FFVHUFF,
AV_CODEC_ID_RV30,
AV_CODEC_ID_RV40,
AV_CODEC_ID_VC1,
AV_CODEC_ID_WMV3,
AV_CODEC_ID_LOCO,
AV_CODEC_ID_WNV1,
AV_CODEC_ID_AASC,
AV_CODEC_ID_INDEO2,
AV_CODEC_ID_FRAPS,
AV_CODEC_ID_TRUEMOTION2,
AV_CODEC_ID_BMP,
AV_CODEC_ID_CSCD,
AV_CODEC_ID_MMVIDEO,
AV_CODEC_ID_ZMBV,
AV_CODEC_ID_AVS,
AV_CODEC_ID_SMACKVIDEO,
AV_CODEC_ID_NUV,
AV_CODEC_ID_KMVC,
AV_CODEC_ID_FLASHSV,
AV_CODEC_ID_CAVS,
AV_CODEC_ID_JPEG2000,
AV_CODEC_ID_VMNC,
AV_CODEC_ID_VP5,
AV_CODEC_ID_VP6,
AV_CODEC_ID_VP6F,
AV_CODEC_ID_TARGA,
AV_CODEC_ID_DSICINVIDEO,
AV_CODEC_ID_TIERTEXSEQVIDEO,
AV_CODEC_ID_TIFF,
AV_CODEC_ID_GIF,
AV_CODEC_ID_DXA,
AV_CODEC_ID_DNXHD,
AV_CODEC_ID_THP,
AV_CODEC_ID_SGI,
AV_CODEC_ID_C93,
AV_CODEC_ID_BETHSOFTVID,
AV_CODEC_ID_PTX,
AV_CODEC_ID_TXD,
AV_CODEC_ID_VP6A,
AV_CODEC_ID_AMV,
AV_CODEC_ID_VB,
AV_CODEC_ID_PCX,
AV_CODEC_ID_SUNRAST,
AV_CODEC_ID_INDEO4,
AV_CODEC_ID_INDEO5,
AV_CODEC_ID_MIMIC,
AV_CODEC_ID_RL2,
AV_CODEC_ID_ESCAPE124,
AV_CODEC_ID_DIRAC,
AV_CODEC_ID_BFI,
AV_CODEC_ID_CMV,
AV_CODEC_ID_MOTIONPIXELS,
AV_CODEC_ID_TGV,
AV_CODEC_ID_TGQ,
AV_CODEC_ID_TQI,
AV_CODEC_ID_AURA,
AV_CODEC_ID_AURA2,
AV_CODEC_ID_V210X,
AV_CODEC_ID_TMV,
AV_CODEC_ID_V210,
AV_CODEC_ID_DPX,
AV_CODEC_ID_MAD,
AV_CODEC_ID_FRWU,
AV_CODEC_ID_FLASHSV2,
AV_CODEC_ID_CDGRAPHICS,
AV_CODEC_ID_R210,
AV_CODEC_ID_ANM,
AV_CODEC_ID_BINKVIDEO,
AV_CODEC_ID_IFF_ILBM,
AV_CODEC_ID_IFF_BYTERUN1,
AV_CODEC_ID_KGV1,
AV_CODEC_ID_YOP,
AV_CODEC_ID_VP8,
AV_CODEC_ID_PICTOR,
AV_CODEC_ID_ANSI,
AV_CODEC_ID_A64_MULTI,
AV_CODEC_ID_A64_MULTI5,
AV_CODEC_ID_R10K,
AV_CODEC_ID_MXPEG,
AV_CODEC_ID_LAGARITH,
AV_CODEC_ID_PRORES,
AV_CODEC_ID_JV,
AV_CODEC_ID_DFA,
AV_CODEC_ID_WMV3IMAGE,
AV_CODEC_ID_VC1IMAGE,
AV_CODEC_ID_UTVIDEO,
AV_CODEC_ID_BMV_VIDEO,
AV_CODEC_ID_VBLE,
AV_CODEC_ID_DXTORY,
AV_CODEC_ID_V410,
AV_CODEC_ID_XWD,
AV_CODEC_ID_CDXL,
AV_CODEC_ID_XBM,
AV_CODEC_ID_ZEROCODEC,
AV_CODEC_ID_MSS1,
AV_CODEC_ID_MSA1,
AV_CODEC_ID_TSCC2,
AV_CODEC_ID_MTS2,
AV_CODEC_ID_CLLC,
AV_CODEC_ID_MSS2,
AV_CODEC_ID_Y41P = MKBETAG('Y','4','1','P'),
AV_CODEC_ID_ESCAPE130 = MKBETAG('E','1','3','0'),
AV_CODEC_ID_EXR = MKBETAG('0','E','X','R'),
AV_CODEC_ID_AVRP = MKBETAG('A','V','R','P'),
AV_CODEC_ID_G2M = MKBETAG( 0 ,'G','2','M'),
AV_CODEC_ID_AVUI = MKBETAG('A','V','U','I'),
AV_CODEC_ID_AYUV = MKBETAG('A','Y','U','V'),
AV_CODEC_ID_V308 = MKBETAG('V','3','0','8'),
AV_CODEC_ID_V408 = MKBETAG('V','4','0','8'),
AV_CODEC_ID_YUV4 = MKBETAG('Y','U','V','4'),
AV_CODEC_ID_SANM = MKBETAG('S','A','N','M'),
AV_CODEC_ID_PAF_VIDEO = MKBETAG('P','A','F','V'),
AV_CODEC_ID_AVRN = MKBETAG('A','V','R','n'),
AV_CODEC_ID_CPIA = MKBETAG('C','P','I','A'),
/* various PCM "codecs" */
AV_CODEC_ID_FIRST_AUDIO = 0x10000, ///< A dummy id pointing at the start of audio codecs
AV_CODEC_ID_PCM_S16LE = 0x10000,
AV_CODEC_ID_PCM_S16BE,
AV_CODEC_ID_PCM_U16LE,
AV_CODEC_ID_PCM_U16BE,
AV_CODEC_ID_PCM_S8,
AV_CODEC_ID_PCM_U8,
AV_CODEC_ID_PCM_MULAW,
AV_CODEC_ID_PCM_ALAW,
AV_CODEC_ID_PCM_S32LE,
AV_CODEC_ID_PCM_S32BE,
AV_CODEC_ID_PCM_U32LE,
AV_CODEC_ID_PCM_U32BE,
AV_CODEC_ID_PCM_S24LE,
AV_CODEC_ID_PCM_S24BE,
AV_CODEC_ID_PCM_U24LE,
AV_CODEC_ID_PCM_U24BE,
AV_CODEC_ID_PCM_S24DAUD,
AV_CODEC_ID_PCM_ZORK,
AV_CODEC_ID_PCM_S16LE_PLANAR,
AV_CODEC_ID_PCM_DVD,
AV_CODEC_ID_PCM_F32BE,
AV_CODEC_ID_PCM_F32LE,
AV_CODEC_ID_PCM_F64BE,
AV_CODEC_ID_PCM_F64LE,
AV_CODEC_ID_PCM_BLURAY,
AV_CODEC_ID_PCM_LXF,
AV_CODEC_ID_S302M,
AV_CODEC_ID_PCM_S8_PLANAR,
/* various ADPCM codecs */
AV_CODEC_ID_ADPCM_IMA_QT = 0x11000,
AV_CODEC_ID_ADPCM_IMA_WAV,
AV_CODEC_ID_ADPCM_IMA_DK3,
AV_CODEC_ID_ADPCM_IMA_DK4,
AV_CODEC_ID_ADPCM_IMA_WS,
AV_CODEC_ID_ADPCM_IMA_SMJPEG,
AV_CODEC_ID_ADPCM_MS,
AV_CODEC_ID_ADPCM_4XM,
AV_CODEC_ID_ADPCM_XA,
AV_CODEC_ID_ADPCM_ADX,
AV_CODEC_ID_ADPCM_EA,
AV_CODEC_ID_ADPCM_G726,
AV_CODEC_ID_ADPCM_CT,
AV_CODEC_ID_ADPCM_SWF,
AV_CODEC_ID_ADPCM_YAMAHA,
AV_CODEC_ID_ADPCM_SBPRO_4,
AV_CODEC_ID_ADPCM_SBPRO_3,
AV_CODEC_ID_ADPCM_SBPRO_2,
AV_CODEC_ID_ADPCM_THP,
AV_CODEC_ID_ADPCM_IMA_AMV,
AV_CODEC_ID_ADPCM_EA_R1,
AV_CODEC_ID_ADPCM_EA_R3,
AV_CODEC_ID_ADPCM_EA_R2,
AV_CODEC_ID_ADPCM_IMA_EA_SEAD,
AV_CODEC_ID_ADPCM_IMA_EA_EACS,
AV_CODEC_ID_ADPCM_EA_XAS,
AV_CODEC_ID_ADPCM_EA_MAXIS_XA,
AV_CODEC_ID_ADPCM_IMA_ISS,
AV_CODEC_ID_ADPCM_G722,
AV_CODEC_ID_ADPCM_IMA_APC,
AV_CODEC_ID_VIMA = MKBETAG('V','I','M','A'),
/* AMR */
AV_CODEC_ID_AMR_NB = 0x12000,
AV_CODEC_ID_AMR_WB,
/* RealAudio codecs*/
AV_CODEC_ID_RA_144 = 0x13000,
AV_CODEC_ID_RA_288,
/* various DPCM codecs */
AV_CODEC_ID_ROQ_DPCM = 0x14000,
AV_CODEC_ID_INTERPLAY_DPCM,
AV_CODEC_ID_XAN_DPCM,
AV_CODEC_ID_SOL_DPCM,
/* audio codecs */
AV_CODEC_ID_MP2 = 0x15000,
AV_CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3
AV_CODEC_ID_AAC,
AV_CODEC_ID_AC3,
AV_CODEC_ID_DTS,
AV_CODEC_ID_VORBIS,
AV_CODEC_ID_DVAUDIO,
AV_CODEC_ID_WMAV1,
AV_CODEC_ID_WMAV2,
AV_CODEC_ID_MACE3,
AV_CODEC_ID_MACE6,
AV_CODEC_ID_VMDAUDIO,
AV_CODEC_ID_FLAC,
AV_CODEC_ID_MP3ADU,
AV_CODEC_ID_MP3ON4,
AV_CODEC_ID_SHORTEN,
AV_CODEC_ID_ALAC,
AV_CODEC_ID_WESTWOOD_SND1,
AV_CODEC_ID_GSM, ///< as in Berlin toast format
AV_CODEC_ID_QDM2,
AV_CODEC_ID_COOK,
AV_CODEC_ID_TRUESPEECH,
AV_CODEC_ID_TTA,
AV_CODEC_ID_SMACKAUDIO,
AV_CODEC_ID_QCELP,
AV_CODEC_ID_WAVPACK,
AV_CODEC_ID_DSICINAUDIO,
AV_CODEC_ID_IMC,
AV_CODEC_ID_MUSEPACK7,
AV_CODEC_ID_MLP,
AV_CODEC_ID_GSM_MS, /* as found in WAV */
AV_CODEC_ID_ATRAC3,
AV_CODEC_ID_VOXWARE,
AV_CODEC_ID_APE,
AV_CODEC_ID_NELLYMOSER,
AV_CODEC_ID_MUSEPACK8,
AV_CODEC_ID_SPEEX,
AV_CODEC_ID_WMAVOICE,
AV_CODEC_ID_WMAPRO,
AV_CODEC_ID_WMALOSSLESS,
AV_CODEC_ID_ATRAC3P,
AV_CODEC_ID_EAC3,
AV_CODEC_ID_SIPR,
AV_CODEC_ID_MP1,
AV_CODEC_ID_TWINVQ,
AV_CODEC_ID_TRUEHD,
AV_CODEC_ID_MP4ALS,
AV_CODEC_ID_ATRAC1,
AV_CODEC_ID_BINKAUDIO_RDFT,
AV_CODEC_ID_BINKAUDIO_DCT,
AV_CODEC_ID_AAC_LATM,
AV_CODEC_ID_QDMC,
AV_CODEC_ID_CELT,
AV_CODEC_ID_G723_1,
AV_CODEC_ID_G729,
AV_CODEC_ID_8SVX_EXP,
AV_CODEC_ID_8SVX_FIB,
AV_CODEC_ID_BMV_AUDIO,
AV_CODEC_ID_RALF,
AV_CODEC_ID_IAC,
AV_CODEC_ID_ILBC,
AV_CODEC_ID_FFWAVESYNTH = MKBETAG('F','F','W','S'),
AV_CODEC_ID_8SVX_RAW = MKBETAG('8','S','V','X'),
AV_CODEC_ID_SONIC = MKBETAG('S','O','N','C'),
AV_CODEC_ID_SONIC_LS = MKBETAG('S','O','N','L'),
AV_CODEC_ID_PAF_AUDIO = MKBETAG('P','A','F','A'),
AV_CODEC_ID_OPUS = MKBETAG('O','P','U','S'),
/* subtitle codecs */
AV_CODEC_ID_FIRST_SUBTITLE = 0x17000, ///< A dummy ID pointing at the start of subtitle codecs.
AV_CODEC_ID_DVD_SUBTITLE = 0x17000,
AV_CODEC_ID_DVB_SUBTITLE,
AV_CODEC_ID_TEXT, ///< raw UTF-8 text
AV_CODEC_ID_XSUB,
AV_CODEC_ID_SSA,
AV_CODEC_ID_MOV_TEXT,
AV_CODEC_ID_HDMV_PGS_SUBTITLE,
AV_CODEC_ID_DVB_TELETEXT,
AV_CODEC_ID_SRT,
AV_CODEC_ID_MICRODVD = MKBETAG('m','D','V','D'),
AV_CODEC_ID_EIA_608 = MKBETAG('c','6','0','8'),
AV_CODEC_ID_JACOSUB = MKBETAG('J','S','U','B'),
AV_CODEC_ID_SAMI = MKBETAG('S','A','M','I'),
AV_CODEC_ID_REALTEXT = MKBETAG('R','T','X','T'),
AV_CODEC_ID_SUBVIEWER = MKBETAG('S','u','b','V'),
AV_CODEC_ID_SUBRIP = MKBETAG('S','R','i','p'),
/* other specific kind of codecs (generally used for attachments) */
AV_CODEC_ID_FIRST_UNKNOWN = 0x18000, ///< A dummy ID pointing at the start of various fake codecs.
AV_CODEC_ID_TTF = 0x18000,
AV_CODEC_ID_BINTEXT = MKBETAG('B','T','X','T'),
AV_CODEC_ID_XBIN = MKBETAG('X','B','I','N'),
AV_CODEC_ID_IDF = MKBETAG( 0 ,'I','D','F'),
AV_CODEC_ID_PROBE = 0x19000, ///< codec_id is not known (like AV_CODEC_ID_NONE) but lavf should attempt to identify it
AV_CODEC_ID_MPEG2TS = 0x20000, /**< _FAKE_ codec to indicate a raw MPEG-2 TS
* stream (only used by libavformat) */
AV_CODEC_ID_MPEG4SYSTEMS = 0x20001, /**< _FAKE_ codec to indicate a MPEG-4 Systems
* stream (only used by libavformat) */
AV_CODEC_ID_FFMETADATA = 0x21000, ///< Dummy codec for streams containing only metadata information.
#if FF_API_CODEC_ID
#include "old_codec_ids.h"
#endif
};
#if FF_API_CODEC_ID
#define CodecID AVCodecID
#endif
/**
* This struct describes the properties of a single codec described by an
* AVCodecID.
* @see avcodec_get_descriptor()
*/
typedef struct AVCodecDescriptor {
enum AVCodecID id;
enum AVMediaType type;
/**
* Name of the codec described by this descriptor. It is non-empty and
* unique for each codec descriptor. It should contain alphanumeric
* characters and '_' only.
*/
const char *name;
/**
* A more descriptive name for this codec. May be NULL.
*/
const char *long_name;
/**
* Codec properties, a combination of AV_CODEC_PROP_* flags.
*/
int props;
} AVCodecDescriptor;
/**
* Codec uses only intra compression.
* Video codecs only.
*/
#define AV_CODEC_PROP_INTRA_ONLY (1 << 0)
/**
* Codec supports lossy compression. Audio and video codecs only.
* @note a codec may support both lossy and lossless
* compression modes
*/
#define AV_CODEC_PROP_LOSSY (1 << 1)
/**
* Codec supports lossless compression. Audio and video codecs only.
*/
#define AV_CODEC_PROP_LOSSLESS (1 << 2)
#if FF_API_OLD_DECODE_AUDIO
/* in bytes */
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
#endif
/**
* @ingroup lavc_decoding
* Required number of additionally allocated bytes at the end of the input bitstream for decoding.
* This is mainly needed because some optimized bitstream readers read
* 32 or 64 bit at once and could read over the end.<br>
* Note: If the first 23 bits of the additional bytes are not 0, then damaged
* MPEG bitstreams could cause overread and segfault.
*/
#define FF_INPUT_BUFFER_PADDING_SIZE 16
/**
* @ingroup lavc_encoding
* minimum encoding buffer size
* Used to avoid some checks during header writing.
*/
#define FF_MIN_BUFFER_SIZE 16384
/**
* @ingroup lavc_encoding
* motion estimation type.
*/
enum Motion_Est_ID {
ME_ZERO = 1, ///< no search, that is use 0,0 vector whenever one is needed
ME_FULL,
ME_LOG,
ME_PHODS,
ME_EPZS, ///< enhanced predictive zonal search
ME_X1, ///< reserved for experiments
ME_HEX, ///< hexagon based search
ME_UMH, ///< uneven multi-hexagon search
ME_ITER, ///< iterative search
ME_TESA, ///< transformed exhaustive search algorithm
};
/**
* @ingroup lavc_decoding
*/
enum AVDiscard{
/* We leave some space between them for extensions (drop some
* keyframes for intra-only or drop just some bidir frames). */
AVDISCARD_NONE =-16, ///< discard nothing
AVDISCARD_DEFAULT = 0, ///< discard useless packets like 0 size packets in avi
AVDISCARD_NONREF = 8, ///< discard all non reference
AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
AVDISCARD_ALL = 48, ///< discard all
};
enum AVColorPrimaries{
AVCOL_PRI_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B
AVCOL_PRI_UNSPECIFIED = 2,
AVCOL_PRI_BT470M = 4,
AVCOL_PRI_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM
AVCOL_PRI_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
AVCOL_PRI_SMPTE240M = 7, ///< functionally identical to above
AVCOL_PRI_FILM = 8,
AVCOL_PRI_NB , ///< Not part of ABI
};
enum AVColorTransferCharacteristic{
AVCOL_TRC_BT709 = 1, ///< also ITU-R BT1361
AVCOL_TRC_UNSPECIFIED = 2,
AVCOL_TRC_GAMMA22 = 4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM
AVCOL_TRC_GAMMA28 = 5, ///< also ITU-R BT470BG
AVCOL_TRC_SMPTE240M = 7,
AVCOL_TRC_NB , ///< Not part of ABI
};
enum AVColorSpace{
AVCOL_SPC_RGB = 0,
AVCOL_SPC_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
AVCOL_SPC_UNSPECIFIED = 2,
AVCOL_SPC_FCC = 4,
AVCOL_SPC_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601
AVCOL_SPC_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above
AVCOL_SPC_SMPTE240M = 7,
AVCOL_SPC_YCOCG = 8, ///< Used by Dirac / VC-2 and H.264 FRext, see ITU-T SG16
AVCOL_SPC_NB , ///< Not part of ABI
};
#define AVCOL_SPC_YCGCO AVCOL_SPC_YCOCG
enum AVColorRange{
AVCOL_RANGE_UNSPECIFIED = 0,
AVCOL_RANGE_MPEG = 1, ///< the normal 219*2^(n-8) "MPEG" YUV ranges
AVCOL_RANGE_JPEG = 2, ///< the normal 2^n-1 "JPEG" YUV ranges
AVCOL_RANGE_NB , ///< Not part of ABI
};
/**
* X X 3 4 X X are luma samples,
* 1 2 1-6 are possible chroma positions
* X X 5 6 X 0 is undefined/unknown position
*/
enum AVChromaLocation{
AVCHROMA_LOC_UNSPECIFIED = 0,
AVCHROMA_LOC_LEFT = 1, ///< mpeg2/4, h264 default
AVCHROMA_LOC_CENTER = 2, ///< mpeg1, jpeg, h263
AVCHROMA_LOC_TOPLEFT = 3, ///< DV
AVCHROMA_LOC_TOP = 4,
AVCHROMA_LOC_BOTTOMLEFT = 5,
AVCHROMA_LOC_BOTTOM = 6,
AVCHROMA_LOC_NB , ///< Not part of ABI
};
enum AVAudioServiceType {
AV_AUDIO_SERVICE_TYPE_MAIN = 0,
AV_AUDIO_SERVICE_TYPE_EFFECTS = 1,
AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED = 2,
AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED = 3,
AV_AUDIO_SERVICE_TYPE_DIALOGUE = 4,
AV_AUDIO_SERVICE_TYPE_COMMENTARY = 5,
AV_AUDIO_SERVICE_TYPE_EMERGENCY = 6,
AV_AUDIO_SERVICE_TYPE_VOICE_OVER = 7,
AV_AUDIO_SERVICE_TYPE_KARAOKE = 8,
AV_AUDIO_SERVICE_TYPE_NB , ///< Not part of ABI
};
/**
* @ingroup lavc_encoding
*/
typedef struct RcOverride{
int start_frame;
int end_frame;
int qscale; // If this is 0 then quality_factor will be used instead.
float quality_factor;
} RcOverride;
#define FF_MAX_B_FRAMES 16
/* encoding support
These flags can be passed in AVCodecContext.flags before initialization.
Note: Not everything is supported yet.
*/
#define CODEC_FLAG_QSCALE 0x0002 ///< Use fixed qscale.
#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / advanced prediction for H.263.
#define CODEC_FLAG_QPEL 0x0010 ///< Use qpel MC.
#define CODEC_FLAG_GMC 0x0020 ///< Use GMC.
#define CODEC_FLAG_MV0 0x0040 ///< Always try a MB with MV=<0,0>.
/**
* The parent program guarantees that the input for B-frames containing
* streams is not written to for at least s->max_b_frames+1 frames, if
* this is not set the input will be copied.
*/
#define CODEC_FLAG_INPUT_PRESERVED 0x0100
#define CODEC_FLAG_PASS1 0x0200 ///< Use internal 2pass ratecontrol in first pass mode.
#define CODEC_FLAG_PASS2 0x0400 ///< Use internal 2pass ratecontrol in second pass mode.
#define CODEC_FLAG_GRAY 0x2000 ///< Only decode/encode grayscale.
#define CODEC_FLAG_EMU_EDGE 0x4000 ///< Don't draw edges.
#define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding.
#define CODEC_FLAG_TRUNCATED 0x00010000 /** Input bitstream might be truncated at a random
location instead of only at frame boundaries. */
#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< Normalize adaptive quantization.
#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< Use interlaced DCT.
#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< Force low delay.
#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< Place global headers in extradata instead of every keyframe.
#define CODEC_FLAG_BITEXACT 0x00800000 ///< Use only bitexact stuff (except (I)DCT).
/* Fx : Flag for h263+ extra options */
#define CODEC_FLAG_AC_PRED 0x01000000 ///< H.263 advanced intra coding / MPEG-4 AC prediction
#define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
#define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
#define CODEC_FLAG_CLOSED_GOP 0x80000000
#define CODEC_FLAG2_FAST 0x00000001 ///< Allow non spec compliant speedup tricks.
#define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< Skip bitstream encoding.
#define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< Place global headers at every keyframe instead of in extradata.
#define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format. DEPRECATED!!!!
#if FF_API_MPV_GLOBAL_OPTS
#define CODEC_FLAG_CBP_RD 0x04000000 ///< Use rate distortion optimization for cbp.
#define CODEC_FLAG_QP_RD 0x08000000 ///< Use rate distortion optimization for qp selectioon.
#define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< Strictly enforce GOP size.
#define CODEC_FLAG2_SKIP_RD 0x00004000 ///< RD optimal MB level residual skipping
#endif
#define CODEC_FLAG2_CHUNKS 0x00008000 ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.
#define CODEC_FLAG2_SHOW_ALL 0x00400000 ///< Show all frames before the first keyframe
/* Unsupported options :
* Syntax Arithmetic coding (SAC)
* Reference Picture Selection
* Independent Segment Decoding */
/* /Fx */
/* codec capabilities */
#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< Decoder can use draw_horiz_band callback.
/**
* Codec uses get_buffer() for allocating buffers and supports custom allocators.
* If not set, it might not use get_buffer() at all or use operations that
* assume the buffer was allocated by avcodec_default_get_buffer.
*/
#define CODEC_CAP_DR1 0x0002
#define CODEC_CAP_TRUNCATED 0x0008
/* Codec can export data for HW decoding (XvMC). */
#define CODEC_CAP_HWACCEL 0x0010
/**
* Encoder or decoder requires flushing with NULL input at the end in order to
* give the complete and correct output.
*
* NOTE: If this flag is not set, the codec is guaranteed to never be fed with
* with NULL data. The user can still send NULL data to the public encode
* or decode function, but libavcodec will not pass it along to the codec
* unless this flag is set.
*
* Decoders:
* The decoder has a non-zero delay and needs to be fed with avpkt->data=NULL,
* avpkt->size=0 at the end to get the delayed data until the decoder no longer
* returns frames.
*
* Encoders:
* The encoder needs to be fed with NULL data at the end of encoding until the
* encoder no longer returns data.
*
* NOTE: For encoders implementing the AVCodec.encode2() function, setting this
* flag also means that the encoder must set the pts and duration for
* each output packet. If this flag is not set, the pts and duration will
* be determined by libavcodec from the input frame.
*/
#define CODEC_CAP_DELAY 0x0020
/**
* Codec can be fed a final frame with a smaller size.
* This can be used to prevent truncation of the last audio samples.
*/
#define CODEC_CAP_SMALL_LAST_FRAME 0x0040
/**
* Codec can export data for HW decoding (VDPAU).
*/
#define CODEC_CAP_HWACCEL_VDPAU 0x0080
/**
* Codec can output multiple frames per AVPacket
* Normally demuxers return one frame at a time, demuxers which do not do
* are connected to a parser to split what they return into proper frames.
* This flag is reserved to the very rare category of codecs which have a
* bitstream that cannot be split into frames without timeconsuming
* operations like full decoding. Demuxers carring such bitstreams thus
* may return multiple frames in a packet. This has many disadvantages like
* prohibiting stream copy in many cases thus it should only be considered
* as a last resort.
*/
#define CODEC_CAP_SUBFRAMES 0x0100
/**
* Codec is experimental and is thus avoided in favor of non experimental
* encoders
*/
#define CODEC_CAP_EXPERIMENTAL 0x0200
/**
* Codec should fill in channel configuration and samplerate instead of container
*/
#define CODEC_CAP_CHANNEL_CONF 0x0400
/**
* Codec is able to deal with negative linesizes
*/
#define CODEC_CAP_NEG_LINESIZES 0x0800
/**
* Codec supports frame-level multithreading.
*/
#define CODEC_CAP_FRAME_THREADS 0x1000
/**
* Codec supports slice-based (or partition-based) multithreading.
*/
#define CODEC_CAP_SLICE_THREADS 0x2000
/**
* Codec supports changed parameters at any point.
*/
#define CODEC_CAP_PARAM_CHANGE 0x4000
/**
* Codec supports avctx->thread_count == 0 (auto).
*/
#define CODEC_CAP_AUTO_THREADS 0x8000
/**
* Audio encoder supports receiving a different number of samples in each call.
*/
#define CODEC_CAP_VARIABLE_FRAME_SIZE 0x10000
/**
* Codec is intra only.
*/
#define CODEC_CAP_INTRA_ONLY 0x40000000
/**
* Codec is lossless.
*/
#define CODEC_CAP_LOSSLESS 0x80000000
//The following defines may change, don't expect compatibility if you use them.
#define MB_TYPE_INTRA4x4 0x0001
#define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific
#define MB_TYPE_INTRA_PCM 0x0004 //FIXME H.264-specific
#define MB_TYPE_16x16 0x0008
#define MB_TYPE_16x8 0x0010
#define MB_TYPE_8x16 0x0020
#define MB_TYPE_8x8 0x0040
#define MB_TYPE_INTERLACED 0x0080
#define MB_TYPE_DIRECT2 0x0100 //FIXME
#define MB_TYPE_ACPRED 0x0200
#define MB_TYPE_GMC 0x0400
#define MB_TYPE_SKIP 0x0800
#define MB_TYPE_P0L0 0x1000
#define MB_TYPE_P1L0 0x2000
#define MB_TYPE_P0L1 0x4000
#define MB_TYPE_P1L1 0x8000
#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
#define MB_TYPE_QUANT 0x00010000
#define MB_TYPE_CBP 0x00020000
//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
/**
* Pan Scan area.
* This specifies the area which should be displayed.
* Note there may be multiple such areas for one frame.
*/
typedef struct AVPanScan{
/**
* id
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*/
int id;
/**
* width and height in 1/16 pel
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*/
int width;
int height;
/**
* position of the top left corner in 1/16 pel for up to 3 fields/frames
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*/
int16_t position[3][2];
}AVPanScan;
#define FF_QSCALE_TYPE_MPEG1 0
#define FF_QSCALE_TYPE_MPEG2 1
#define FF_QSCALE_TYPE_H264 2
#define FF_QSCALE_TYPE_VP56 3
#define FF_BUFFER_TYPE_INTERNAL 1
#define FF_BUFFER_TYPE_USER 2 ///< direct rendering buffers (image is (de)allocated by user)
#define FF_BUFFER_TYPE_SHARED 4 ///< Buffer from somewhere else; don't deallocate image (data/base), all other tables are not shared.
#define FF_BUFFER_TYPE_COPY 8 ///< Just a (modified) copy of some other buffer, don't deallocate anything.
#define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore).
#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer.
#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content.
#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update).
/**
* @defgroup lavc_packet AVPacket
*
* Types and functions for working with AVPacket.
* @{
*/
enum AVPacketSideDataType {
AV_PKT_DATA_PALETTE,
AV_PKT_DATA_NEW_EXTRADATA,
/**
* An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
* @code
* u32le param_flags
* if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT)
* s32le channel_count
* if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT)
* u64le channel_layout
* if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE)
* s32le sample_rate
* if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS)
* s32le width
* s32le height
* @endcode
*/
AV_PKT_DATA_PARAM_CHANGE,
/**
* An AV_PKT_DATA_H263_MB_INFO side data packet contains a number of
* structures with info about macroblocks relevant to splitting the
* packet into smaller packets on macroblock edges (e.g. as for RFC 2190).
* That is, it does not necessarily contain info about all macroblocks,
* as long as the distance between macroblocks in the info is smaller
* than the target payload size.
* Each MB info structure is 12 bytes, and is laid out as follows:
* @code
* u32le bit offset from the start of the packet
* u8 current quantizer at the start of the macroblock
* u8 GOB number
* u16le macroblock address within the GOB
* u8 horizontal MV predictor
* u8 vertical MV predictor
* u8 horizontal MV predictor for block number 3
* u8 vertical MV predictor for block number 3
* @endcode
*/
AV_PKT_DATA_H263_MB_INFO,
/**
* Recommmends skipping the specified number of samples
* @code
* u32le number of samples to skip from start of this packet
* u32le number of samples to skip from end of this packet
* u8 reason for start skip
* u8 reason for end skip (0=padding silence, 1=convergence)
* @endcode
*/
AV_PKT_DATA_SKIP_SAMPLES=70,
};
typedef struct AVPacket {
/**
* Presentation timestamp in AVStream->time_base units; the time at which
* the decompressed packet will be presented to the user.
* Can be AV_NOPTS_VALUE if it is not stored in the file.
* pts MUST be larger or equal to dts as presentation cannot happen before
* decompression, unless one wants to view hex dumps. Some formats misuse
* the terms dts and pts/cts to mean something different. Such timestamps
* must be converted to true pts/dts before they are stored in AVPacket.
*/
int64_t pts;
/**
* Decompression timestamp in AVStream->time_base units; the time at which
* the packet is decompressed.
* Can be AV_NOPTS_VALUE if it is not stored in the file.
*/
int64_t dts;
uint8_t *data;
int size;
int stream_index;
/**
* A combination of AV_PKT_FLAG values
*/
int flags;
/**
* Additional packet data that can be provided by the container.
* Packet can contain several types of side information.
*/
struct {
uint8_t *data;
int size;
enum AVPacketSideDataType type;
} *side_data;
int side_data_elems;
/**
* Duration of this packet in AVStream->time_base units, 0 if unknown.
* Equals next_pts - this_pts in presentation order.
*/
int duration;
void (*destruct)(struct AVPacket *);
void *priv;
int64_t pos; ///< byte position in stream, -1 if unknown
/**
* Time difference in AVStream->time_base units from the pts of this
* packet to the point at which the output from the decoder has converged
* independent from the availability of previous frames. That is, the
* frames are virtually identical no matter if decoding started from
* the very first frame or from this keyframe.
* Is AV_NOPTS_VALUE if unknown.
* This field is not the display duration of the current packet.
* This field has no meaning if the packet does not have AV_PKT_FLAG_KEY
* set.
*
* The purpose of this field is to allow seeking in streams that have no
* keyframes in the conventional sense. It corresponds to the
* recovery point SEI in H.264 and match_time_delta in NUT. It is also
* essential for some types of subtitle streams to ensure that all
* subtitles are correctly displayed after seeking.
*/
int64_t convergence_duration;
} AVPacket;
#define AV_PKT_FLAG_KEY 0x0001 ///< The packet contains a keyframe
#define AV_PKT_FLAG_CORRUPT 0x0002 ///< The packet content is corrupted
enum AVSideDataParamChangeFlags {
AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT = 0x0001,
AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT = 0x0002,
AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE = 0x0004,
AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS = 0x0008,
};
/**
* @}
*/
/**
* Audio Video Frame.
* New fields can be added to the end of AVFRAME with minor version
* bumps. Similarly fields that are marked as to be only accessed by
* av_opt_ptr() can be reordered. This allows 2 forks to add fields
* without breaking compatibility with each other.
* Removal, reordering and changes in the remaining cases require
* a major version bump.
* sizeof(AVFrame) must not be used outside libavcodec.
*/
typedef struct AVFrame {
#define AV_NUM_DATA_POINTERS 8
/**
* pointer to the picture/channel planes.
* This might be different from the first allocated byte
* - encoding: Set by user
* - decoding: set by AVCodecContext.get_buffer()
*/
uint8_t *data[AV_NUM_DATA_POINTERS];
/**
* Size, in bytes, of the data for each picture/channel plane.
*
* For audio, only linesize[0] may be set. For planar audio, each channel
* plane must be the same size.
*
* - encoding: Set by user
* - decoding: set by AVCodecContext.get_buffer()
*/
int linesize[AV_NUM_DATA_POINTERS];
/**
* pointers to the data planes/channels.
*
* For video, this should simply point to data[].
*
* For planar audio, each channel has a separate data pointer, and
* linesize[0] contains the size of each channel buffer.
* For packed audio, there is just one data pointer, and linesize[0]
* contains the total size of the buffer for all channels.
*
* Note: Both data and extended_data will always be set by get_buffer(),
* but for planar audio with more channels that can fit in data,
* extended_data must be used by the decoder in order to access all
* channels.
*
* encoding: unused
* decoding: set by AVCodecContext.get_buffer()
*/
uint8_t **extended_data;
/**
* width and height of the video frame
* - encoding: unused
* - decoding: Read by user.
*/
int width, height;
/**
* number of audio samples (per channel) described by this frame
* - encoding: Set by user
* - decoding: Set by libavcodec
*/
int nb_samples;
/**
* format of the frame, -1 if unknown or unset
* Values correspond to enum PixelFormat for video frames,
* enum AVSampleFormat for audio)
* - encoding: unused
* - decoding: Read by user.
*/
int format;
/**
* 1 -> keyframe, 0-> not
* - encoding: Set by libavcodec.
* - decoding: Set by libavcodec.
*/
int key_frame;
/**
* Picture type of the frame, see ?_TYPE below.
* - encoding: Set by libavcodec. for coded_picture (and set by user for input).
* - decoding: Set by libavcodec.
*/
enum AVPictureType pict_type;
/**
* pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.
* This isn't used by libavcodec unless the default get/release_buffer() is used.
* - encoding:
* - decoding:
*/
uint8_t *base[AV_NUM_DATA_POINTERS];
/**
* sample aspect ratio for the video frame, 0/1 if unknown/unspecified
* - encoding: unused
* - decoding: Read by user.
*/
AVRational sample_aspect_ratio;
/**
* presentation timestamp in time_base units (time when frame should be shown to user)
* If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.
* - encoding: MUST be set by user.
* - decoding: Set by libavcodec.
*/
int64_t pts;
/**
* reordered pts from the last AVPacket that has been input into the decoder
* - encoding: unused
* - decoding: Read by user.
*/
int64_t pkt_pts;
/**
* dts from the last AVPacket that has been input into the decoder
* - encoding: unused
* - decoding: Read by user.
*/
int64_t pkt_dts;
/**
* picture number in bitstream order
* - encoding: set by
* - decoding: Set by libavcodec.
*/
int coded_picture_number;
/**
* picture number in display order
* - encoding: set by
* - decoding: Set by libavcodec.
*/
int display_picture_number;
/**
* quality (between 1 (good) and FF_LAMBDA_MAX (bad))
* - encoding: Set by libavcodec. for coded_picture (and set by user for input).
* - decoding: Set by libavcodec.
*/
int quality;
/**
* is this picture used as reference
* The values for this are the same as the MpegEncContext.picture_structure
* variable, that is 1->top field, 2->bottom field, 3->frame/both fields.
* Set to 4 for delayed, non-reference frames.
* - encoding: unused
* - decoding: Set by libavcodec. (before get_buffer() call)).
*/
int reference;
/**
* QP table
* - encoding: unused
* - decoding: Set by libavcodec.
*/
int8_t *qscale_table;
/**
* QP store stride
* - encoding: unused
* - decoding: Set by libavcodec.
*/
int qstride;
/**
*
*/
int qscale_type;
/**
* mbskip_table[mb]>=1 if MB didn't change
* stride= mb_width = (width+15)>>4
* - encoding: unused
* - decoding: Set by libavcodec.
*/
uint8_t *mbskip_table;
/**
* motion vector table
* @code
* example:
* int mv_sample_log2= 4 - motion_subsample_log2;
* int mb_width= (width+15)>>4;
* int mv_stride= (mb_width << mv_sample_log2) + 1;
* motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];
* @endcode
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*/
int16_t (*motion_val[2])[2];
/**
* macroblock type table
* mb_type_base + mb_width + 2
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*/
uint32_t *mb_type;
/**
* DCT coefficients
* - encoding: unused
* - decoding: Set by libavcodec.
*/
short *dct_coeff;
/**
* motion reference frame index
* the order in which these are stored can depend on the codec.
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*/
int8_t *ref_index[2];
/**
* for some private data of the user
* - encoding: unused
* - decoding: Set by user.
*/
void *opaque;
/**
* error
* - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.
* - decoding: unused
*/
uint64_t error[AV_NUM_DATA_POINTERS];
/**
* type of the buffer (to keep track of who has to deallocate data[*])
* - encoding: Set by the one who allocates it.
* - decoding: Set by the one who allocates it.
* Note: User allocated (direct rendering) & internal buffers cannot coexist currently.
*/
int type;
/**
* When decoding, this signals how much the picture must be delayed.
* extra_delay = repeat_pict / (2*fps)
* - encoding: unused
* - decoding: Set by libavcodec.
*/
int repeat_pict;
/**
* The content of the picture is interlaced.
* - encoding: Set by user.
* - decoding: Set by libavcodec. (default 0)
*/
int interlaced_frame;
/**
* If the content is interlaced, is top field displayed first.
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*/
int top_field_first;
/**
* Tell user application that palette has changed from previous frame.
* - encoding: ??? (no palette-enabled encoder yet)
* - decoding: Set by libavcodec. (default 0).
*/
int palette_has_changed;
/**
* codec suggestion on buffer type if != 0
* - encoding: unused
* - decoding: Set by libavcodec. (before get_buffer() call)).
*/
int buffer_hints;
/**
* Pan scan.
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*/
AVPanScan *pan_scan;
/**
* reordered opaque 64bit (generally an integer or a double precision float
* PTS but can be anything).
* The user sets AVCodecContext.reordered_opaque to represent the input at
* that time,
* the decoder reorders values as needed and sets AVFrame.reordered_opaque
* to exactly one of the values provided by the user through AVCodecContext.reordered_opaque
* @deprecated in favor of pkt_pts
* - encoding: unused
* - decoding: Read by user.
*/
int64_t reordered_opaque;
/**
* hardware accelerator private data (FFmpeg-allocated)
* - encoding: unused
* - decoding: Set by libavcodec
*/
void *hwaccel_picture_private;
/**
* the AVCodecContext which ff_thread_get_buffer() was last called on
* - encoding: Set by libavcodec.
* - decoding: Set by libavcodec.
*/
struct AVCodecContext *owner;
/**
* used by multithreading to store frame-specific info
* - encoding: Set by libavcodec.
* - decoding: Set by libavcodec.
*/
void *thread_opaque;
/**
* log2 of the size of the block which a single vector in motion_val represents:
* (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)
* - encoding: unused
* - decoding: Set by libavcodec.
*/
uint8_t motion_subsample_log2;
/**
* Sample rate of the audio data.
*
* - encoding: unused
* - decoding: read by user
*/
int sample_rate;
/**
* Channel layout of the audio data.
*
* - encoding: unused
* - decoding: read by user.
*/
uint64_t channel_layout;
/**
* frame timestamp estimated using various heuristics, in stream time base
* Code outside libavcodec should access this field using:
* av_frame_get_best_effort_timestamp(frame)
* - encoding: unused
* - decoding: set by libavcodec, read by user.
*/
int64_t best_effort_timestamp;
/**
* reordered pos from the last AVPacket that has been input into the decoder
* Code outside libavcodec should access this field using:
* av_frame_get_pkt_pos(frame)
* - encoding: unused
* - decoding: Read by user.
*/
int64_t pkt_pos;
/**
* duration of the corresponding packet, expressed in
* AVStream->time_base units, 0 if unknown.
* Code outside libavcodec should access this field using:
* av_frame_get_pkt_duration(frame)
* - encoding: unused
* - decoding: Read by user.
*/
int64_t pkt_duration;
/**
* metadata.
* Code outside libavcodec should access this field using:
* av_frame_get_metadata(frame)
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*/
AVDictionary *metadata;
/**
* decode error flags of the frame, set to a combination of
* FF_DECODE_ERROR_xxx flags if the decoder produced a frame, but there
* were errors during the decoding.
* Code outside libavcodec should access this field using:
* av_frame_get_decode_error_flags(frame)
* - encoding: unused
* - decoding: set by libavcodec, read by user.
*/
int decode_error_flags;
#define FF_DECODE_ERROR_INVALID_BITSTREAM 1
#define FF_DECODE_ERROR_MISSING_REFERENCE 2
/**
* number of audio channels, only used for audio.
* Code outside libavcodec should access this field using:
* av_frame_get_channels(frame)
* - encoding: unused
* - decoding: Read by user.
*/
int64_t channels;
} AVFrame;
/**
* Accessors for some AVFrame fields.
* The position of these field in the structure is not part of the ABI,
* they should not be accessed directly outside libavcodec.
*/
int64_t av_frame_get_best_effort_timestamp(const AVFrame *frame);
void av_frame_set_best_effort_timestamp(AVFrame *frame, int64_t val);
int64_t av_frame_get_pkt_duration (const AVFrame *frame);
void av_frame_set_pkt_duration (AVFrame *frame, int64_t val);
int64_t av_frame_get_pkt_pos (const AVFrame *frame);
void av_frame_set_pkt_pos (AVFrame *frame, int64_t val);
int64_t av_frame_get_channel_layout (const AVFrame *frame);
void av_frame_set_channel_layout (AVFrame *frame, int64_t val);
int av_frame_get_channels (const AVFrame *frame);
void av_frame_set_channels (AVFrame *frame, int val);
int av_frame_get_sample_rate (const AVFrame *frame);
void av_frame_set_sample_rate (AVFrame *frame, int val);
AVDictionary *av_frame_get_metadata (const AVFrame *frame);
void av_frame_set_metadata (AVFrame *frame, AVDictionary *val);
int av_frame_get_decode_error_flags (const AVFrame *frame);
void av_frame_set_decode_error_flags (AVFrame *frame, int val);
struct AVCodecInternal;
enum AVFieldOrder {
AV_FIELD_UNKNOWN,
AV_FIELD_PROGRESSIVE,
AV_FIELD_TT, //< Top coded_first, top displayed first
AV_FIELD_BB, //< Bottom coded first, bottom displayed first
AV_FIELD_TB, //< Top coded first, bottom displayed first
AV_FIELD_BT, //< Bottom coded first, top displayed first
};
/**
* main external API structure.
* New fields can be added to the end with minor version bumps.
* Removal, reordering and changes to existing fields require a major
* version bump.
* Please use AVOptions (av_opt* / av_set/get*()) to access these fields from user
* applications.
* sizeof(AVCodecContext) must not be used outside libav*.
*/
typedef struct AVCodecContext {
/**
* information on struct for av_log
* - set by avcodec_alloc_context3
*/
const AVClass *av_class;
int log_level_offset;
enum AVMediaType codec_type; /* see AVMEDIA_TYPE_xxx */
const struct AVCodec *codec;
char codec_name[32];
enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */
/**
* fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
* This is used to work around some encoder bugs.
* A demuxer should set this to what is stored in the field used to identify the codec.
* If there are multiple such fields in a container then the demuxer should choose the one
* which maximizes the information about the used codec.
* If the codec tag field in a container is larger than 32 bits then the demuxer should
* remap the longer ID to 32 bits with a table or other structure. Alternatively a new
* extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
* first.
* - encoding: Set by user, if not then the default based on codec_id will be used.
* - decoding: Set by user, will be converted to uppercase by libavcodec during init.
*/
unsigned int codec_tag;
/**
* fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
* This is used to work around some encoder bugs.
* - encoding: unused
* - decoding: Set by user, will be converted to uppercase by libavcodec during init.
*/
unsigned int stream_codec_tag;
#if FF_API_SUB_ID
/**
* @deprecated this field is unused
*/
attribute_deprecated int sub_id;
#endif
void *priv_data;
/**
* Private context used for internal data.
*
* Unlike priv_data, this is not codec-specific. It is used in general
* libavcodec functions.
*/
struct AVCodecInternal *internal;
/**
* Private data of the user, can be used to carry app specific stuff.
* - encoding: Set by user.
* - decoding: Set by user.
*/
void *opaque;
/**
* the average bitrate
* - encoding: Set by user; unused for constant quantizer encoding.
* - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.
*/
int bit_rate;
/**
* number of bits the bitstream is allowed to diverge from the reference.
* the reference can be CBR (for CBR pass1) or VBR (for pass2)
* - encoding: Set by user; unused for constant quantizer encoding.
* - decoding: unused
*/
int bit_rate_tolerance;
/**
* Global quality for codecs which cannot change it per frame.
* This should be proportional to MPEG-1/2/4 qscale.
* - encoding: Set by user.
* - decoding: unused
*/
int global_quality;
/**
* - encoding: Set by user.
* - decoding: unused
*/
int compression_level;
#define FF_COMPRESSION_DEFAULT -1
/**
* CODEC_FLAG_*.
* - encoding: Set by user.
* - decoding: Set by user.
*/
int flags;
/**
* CODEC_FLAG2_*
* - encoding: Set by user.
* - decoding: Set by user.
*/
int flags2;
/**
* some codecs need / can use extradata like Huffman tables.
* mjpeg: Huffman tables
* rv10: additional flags
* mpeg4: global headers (they can be in the bitstream or here)
* The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
* than extradata_size to avoid prolems if it is read with the bitstream reader.
* The bytewise contents of extradata must not depend on the architecture or CPU endianness.
* - encoding: Set/allocated/freed by libavcodec.
* - decoding: Set/allocated/freed by user.
*/
uint8_t *extradata;
int extradata_size;
/**
* This is the fundamental unit of time (in seconds) in terms
* of which frame timestamps are represented. For fixed-fps content,
* timebase should be 1/framerate and timestamp increments should be
* identically 1.
* - encoding: MUST be set by user.
* - decoding: Set by libavcodec.
*/
AVRational time_base;
/**
* For some codecs, the time base is closer to the field rate than the frame rate.
* Most notably, H.264 and MPEG-2 specify time_base as half of frame duration
* if no telecine is used ...
*
* Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2.
*/
int ticks_per_frame;
/**
* Encoding: Number of frames delay there will be from the encoder input to
* the decoder output. (we assume the decoder matches the spec)
* Decoding: Number of frames delay in addition to what a standard decoder
* as specified in the spec would produce.
*
* Video:
* Number of frames the decoded output will be delayed relative to the
* encoded input.
*
* Audio:
* Number of "priming" samples added to the beginning of the stream
* during encoding. The decoded output will be delayed by this many
* samples relative to the input to the encoder. Note that this field is
* purely informational and does not directly affect the pts output by
* the encoder, which should always be based on the actual presentation
* time, including any delay.
*
* - encoding: Set by libavcodec.
* - decoding: Set by libavcodec.
*/
int delay;
/* video only */
/**
* picture width / height.
* - encoding: MUST be set by user.
* - decoding: Set by libavcodec.
* Note: For compatibility it is possible to set this instead of
* coded_width/height before decoding.
*/
int width, height;
/**
* Bitstream width / height, may be different from width/height if lowres enabled.
* - encoding: unused
* - decoding: Set by user before init if known. Codec should override / dynamically change if needed.
*/
int coded_width, coded_height;
#define FF_ASPECT_EXTENDED 15
/**
* the number of pictures in a group of pictures, or 0 for intra_only
* - encoding: Set by user.
* - decoding: unused
*/
int gop_size;
/**
* Pixel format, see PIX_FMT_xxx.
* May be set by the demuxer if known from headers.
* May be overridden by the decoder if it knows better.
* - encoding: Set by user.
* - decoding: Set by user if known, overridden by libavcodec if known
*/
enum PixelFormat pix_fmt;
/**
* Motion estimation algorithm used for video coding.
* 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
* 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific]
* - encoding: MUST be set by user.
* - decoding: unused
*/
int me_method;
/**
* If non NULL, 'draw_horiz_band' is called by the libavcodec
* decoder to draw a horizontal band. It improves cache usage. Not
* all codecs can do that. You must check the codec capabilities
* beforehand.
* When multithreading is used, it may be called from multiple threads
* at the same time; threads might draw different parts of the same AVFrame,
* or multiple AVFrames, and there is no guarantee that slices will be drawn
* in order.
* The function is also used by hardware acceleration APIs.
* It is called at least once during frame decoding to pass
* the data needed for hardware render.
* In that mode instead of pixel data, AVFrame points to
* a structure specific to the acceleration API. The application
* reads the structure and can change some fields to indicate progress
* or mark state.
* - encoding: unused
* - decoding: Set by user.
* @param height the height of the slice
* @param y the y position of the slice
* @param type 1->top field, 2->bottom field, 3->frame
* @param offset offset into the AVFrame.data from which the slice should be read
*/
void (*draw_horiz_band)(struct AVCodecContext *s,
const AVFrame *src, int offset[AV_NUM_DATA_POINTERS],
int y, int type, int height);
/**
* callback to negotiate the pixelFormat
* @param fmt is the list of formats which are supported by the codec,
* it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
* The first is always the native one.
* @return the chosen format
* - encoding: unused
* - decoding: Set by user, if not set the native format will be chosen.
*/
enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
/**
* maximum number of B-frames between non-B-frames
* Note: The output will be delayed by max_b_frames+1 relative to the input.
* - encoding: Set by user.
* - decoding: unused
*/
int max_b_frames;
/**
* qscale factor between IP and B-frames
* If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
* If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
* - encoding: Set by user.
* - decoding: unused
*/
float b_quant_factor;
/** obsolete FIXME remove */
int rc_strategy;
#define FF_RC_STRATEGY_XVID 1
int b_frame_strategy;
#if FF_API_MPV_GLOBAL_OPTS
/**
* luma single coefficient elimination threshold
* - encoding: Set by user.
* - decoding: unused
*/
attribute_deprecated int luma_elim_threshold;
/**
* chroma single coeff elimination threshold
* - encoding: Set by user.
* - decoding: unused
*/
attribute_deprecated int chroma_elim_threshold;
#endif
/**
* qscale offset between IP and B-frames
* - encoding: Set by user.
* - decoding: unused
*/
float b_quant_offset;
/**
* Size of the frame reordering buffer in the decoder.
* For MPEG-2 it is 1 IPB or 0 low delay IP.
* - encoding: Set by libavcodec.
* - decoding: Set by libavcodec.
*/
int has_b_frames;
/**
* 0-> h263 quant 1-> mpeg quant
* - encoding: Set by user.
* - decoding: unused
*/
int mpeg_quant;
/**
* qscale factor between P and I-frames
* If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
* If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
* - encoding: Set by user.
* - decoding: unused
*/
float i_quant_factor;
/**
* qscale offset between P and I-frames
* - encoding: Set by user.
* - decoding: unused
*/
float i_quant_offset;
/**
* luminance masking (0-> disabled)
* - encoding: Set by user.
* - decoding: unused
*/
float lumi_masking;
/**
* temporary complexity masking (0-> disabled)
* - encoding: Set by user.
* - decoding: unused
*/
float temporal_cplx_masking;
/**
* spatial complexity masking (0-> disabled)
* - encoding: Set by user.
* - decoding: unused
*/
float spatial_cplx_masking;
/**
* p block masking (0-> disabled)
* - encoding: Set by user.
* - decoding: unused
*/
float p_masking;
/**
* darkness masking (0-> disabled)
* - encoding: Set by user.
* - decoding: unused
*/
float dark_masking;
/**
* slice count
* - encoding: Set by libavcodec.
* - decoding: Set by user (or 0).
*/
int slice_count;
/**
* prediction method (needed for huffyuv)
* - encoding: Set by user.
* - decoding: unused
*/
int prediction_method;
#define FF_PRED_LEFT 0
#define FF_PRED_PLANE 1
#define FF_PRED_MEDIAN 2
/**
* slice offsets in the frame in bytes
* - encoding: Set/allocated by libavcodec.
* - decoding: Set/allocated by user (or NULL).
*/
int *slice_offset;
/**
* sample aspect ratio (0 if unknown)
* That is the width of a pixel divided by the height of the pixel.
* Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*/
AVRational sample_aspect_ratio;
/**
* motion estimation comparison function
* - encoding: Set by user.
* - decoding: unused
*/
int me_cmp;
/**
* subpixel motion estimation comparison function
* - encoding: Set by user.
* - decoding: unused
*/
int me_sub_cmp;
/**
* macroblock comparison function (not supported yet)
* - encoding: Set by user.
* - decoding: unused
*/
int mb_cmp;
/**
* interlaced DCT comparison function
* - encoding: Set by user.
* - decoding: unused
*/
int ildct_cmp;
#define FF_CMP_SAD 0
#define FF_CMP_SSE 1
#define FF_CMP_SATD 2
#define FF_CMP_DCT 3
#define FF_CMP_PSNR 4
#define FF_CMP_BIT 5
#define FF_CMP_RD 6
#define FF_CMP_ZERO 7
#define FF_CMP_VSAD 8
#define FF_CMP_VSSE 9
#define FF_CMP_NSSE 10
#define FF_CMP_W53 11
#define FF_CMP_W97 12
#define FF_CMP_DCTMAX 13
#define FF_CMP_DCT264 14
#define FF_CMP_CHROMA 256
/**
* ME diamond size & shape
* - encoding: Set by user.
* - decoding: unused
*/
int dia_size;
/**
* amount of previous MV predictors (2a+1 x 2a+1 square)
* - encoding: Set by user.
* - decoding: unused
*/
int last_predictor_count;
/**
* prepass for motion estimation
* - encoding: Set by user.
* - decoding: unused
*/
int pre_me;
/**
* motion estimation prepass comparison function
* - encoding: Set by user.
* - decoding: unused
*/
int me_pre_cmp;
/**
* ME prepass diamond size & shape
* - encoding: Set by user.
* - decoding: unused
*/
int pre_dia_size;
/**
* subpel ME quality
* - encoding: Set by user.
* - decoding: unused
*/
int me_subpel_quality;
/**
* DTG active format information (additional aspect ratio
* information only used in DVB MPEG-2 transport streams)
* 0 if not set.
*
* - encoding: unused
* - decoding: Set by decoder.
*/
int dtg_active_format;
#define FF_DTG_AFD_SAME 8
#define FF_DTG_AFD_4_3 9
#define FF_DTG_AFD_16_9 10
#define FF_DTG_AFD_14_9 11
#define FF_DTG_AFD_4_3_SP_14_9 13
#define FF_DTG_AFD_16_9_SP_14_9 14
#define FF_DTG_AFD_SP_4_3 15
/**
* maximum motion estimation search range in subpel units
* If 0 then no limit.
*
* - encoding: Set by user.
* - decoding: unused
*/
int me_range;
/**
* intra quantizer bias
* - encoding: Set by user.
* - decoding: unused
*/
int intra_quant_bias;
#define FF_DEFAULT_QUANT_BIAS 999999
/**
* inter quantizer bias
* - encoding: Set by user.
* - decoding: unused
*/
int inter_quant_bias;
#if FF_API_COLOR_TABLE_ID
/**
* color table ID
* - encoding: unused
* - decoding: Which clrtable should be used for 8bit RGB images.
* Tables have to be stored somewhere. FIXME
*/
attribute_deprecated int color_table_id;
#endif
/**
* slice flags
* - encoding: unused
* - decoding: Set by user.
*/
int slice_flags;
#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
/**
* XVideo Motion Acceleration
* - encoding: forbidden
* - decoding: set by decoder
*/
int xvmc_acceleration;
/**
* macroblock decision mode
* - encoding: Set by user.
* - decoding: unused
*/
int mb_decision;
#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
#define FF_MB_DECISION_RD 2 ///< rate distortion
/**
* custom intra quantization matrix
* - encoding: Set by user, can be NULL.
* - decoding: Set by libavcodec.
*/
uint16_t *intra_matrix;
/**
* custom inter quantization matrix
* - encoding: Set by user, can be NULL.
* - decoding: Set by libavcodec.
*/
uint16_t *inter_matrix;
/**
* scene change detection threshold
* 0 is default, larger means fewer detected scene changes.
* - encoding: Set by user.
* - decoding: unused
*/
int scenechange_threshold;
/**
* noise reduction strength
* - encoding: Set by user.
* - decoding: unused
*/
int noise_reduction;
#if FF_API_INTER_THRESHOLD
/**
* @deprecated this field is unused
*/
attribute_deprecated int inter_threshold;
#endif
#if FF_API_MPV_GLOBAL_OPTS
/**
* @deprecated use mpegvideo private options instead
*/
attribute_deprecated int quantizer_noise_shaping;
#endif
/**
* Motion estimation threshold below which no motion estimation is
* performed, but instead the user specified motion vectors are used.
*
* - encoding: Set by user.
* - decoding: unused
*/
int me_threshold;
/**
* Macroblock threshold below which the user specified macroblock types will be used.
* - encoding: Set by user.
* - decoding: unused
*/
int mb_threshold;
/**
* precision of the intra DC coefficient - 8
* - encoding: Set by user.
* - decoding: unused
*/
int intra_dc_precision;
/**
* Number of macroblock rows at the top which are skipped.
* - encoding: unused
* - decoding: Set by user.
*/
int skip_top;
/**
* Number of macroblock rows at the bottom which are skipped.
* - encoding: unused
* - decoding: Set by user.
*/
int skip_bottom;
/**
* Border processing masking, raises the quantizer for mbs on the borders
* of the picture.
* - encoding: Set by user.
* - decoding: unused
*/
float border_masking;
/**
* minimum MB lagrange multipler
* - encoding: Set by user.
* - decoding: unused
*/
int mb_lmin;
/**
* maximum MB lagrange multipler
* - encoding: Set by user.
* - decoding: unused
*/
int mb_lmax;
/**
*
* - encoding: Set by user.
* - decoding: unused
*/
int me_penalty_compensation;
/**
*
* - encoding: Set by user.
* - decoding: unused
*/
int bidir_refine;
/**
*
* - encoding: Set by user.
* - decoding: unused
*/
int brd_scale;
/**
* minimum GOP size
* - encoding: Set by user.
* - decoding: unused
*/
int keyint_min;
/**
* number of reference frames
* - encoding: Set by user.
* - decoding: Set by lavc.
*/
int refs;
/**
* chroma qp offset from luma
* - encoding: Set by user.
* - decoding: unused
*/
int chromaoffset;
/**
* Multiplied by qscale for each frame and added to scene_change_score.
* - encoding: Set by user.
* - decoding: unused
*/
int scenechange_factor;
/**
*
* Note: Value depends upon the compare function used for fullpel ME.
* - encoding: Set by user.
* - decoding: unused
*/
int mv0_threshold;
/**
* Adjust sensitivity of b_frame_strategy 1.
* - encoding: Set by user.
* - decoding: unused
*/
int b_sensitivity;
/**
* Chromaticity coordinates of the source primaries.
* - encoding: Set by user
* - decoding: Set by libavcodec
*/
enum AVColorPrimaries color_primaries;
/**
* Color Transfer Characteristic.
* - encoding: Set by user
* - decoding: Set by libavcodec
*/
enum AVColorTransferCharacteristic color_trc;
/**
* YUV colorspace type.
* - encoding: Set by user
* - decoding: Set by libavcodec
*/
enum AVColorSpace colorspace;
/**
* MPEG vs JPEG YUV range.
* - encoding: Set by user
* - decoding: Set by libavcodec
*/
enum AVColorRange color_range;
/**
* This defines the location of chroma samples.
* - encoding: Set by user
* - decoding: Set by libavcodec
*/
enum AVChromaLocation chroma_sample_location;
/**
* Number of slices.
* Indicates number of picture subdivisions. Used for parallelized
* decoding.
* - encoding: Set by user
* - decoding: unused
*/
int slices;
/** Field order
* - encoding: set by libavcodec
* - decoding: Set by libavcodec
*/
enum AVFieldOrder field_order;
/* audio only */
int sample_rate; ///< samples per second
int channels; ///< number of audio channels
/**
* audio sample format
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*/
enum AVSampleFormat sample_fmt; ///< sample format
/* The following data should not be initialized. */
/**
* Samples per packet, initialized when calling 'init'.
*/
int frame_size;
/**
* Frame counter, set by libavcodec.
*
* - decoding: total number of frames returned from the decoder so far.
* - encoding: total number of frames passed to the encoder so far.
*
* @note the counter is not incremented if encoding/decoding resulted in
* an error.
*/
int frame_number;
/**
* number of bytes per packet if constant and known or 0
* Used by some WAV based audio codecs.
*/
int block_align;
/**
* Audio cutoff bandwidth (0 means "automatic")
* - encoding: Set by user.
* - decoding: unused
*/
int cutoff;
#if FF_API_REQUEST_CHANNELS
/**
* Decoder should decode to this many channels if it can (0 for default)
* - encoding: unused
* - decoding: Set by user.
* @deprecated Deprecated in favor of request_channel_layout.
*/
int request_channels;
#endif
/**
* Audio channel layout.
* - encoding: set by user.
* - decoding: set by user, may be overwritten by libavcodec.
*/
uint64_t channel_layout;
/**
* Request decoder to use this channel layout if it can (0 for default)
* - encoding: unused
* - decoding: Set by user.
*/
uint64_t request_channel_layout;
/**
* Type of service that the audio stream conveys.
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*/
enum AVAudioServiceType audio_service_type;
/**
* desired sample format
* - encoding: Not used.
* - decoding: Set by user.
* Decoder will decode to this format if it can.
*/
enum AVSampleFormat request_sample_fmt;
/**
* Called at the beginning of each frame to get a buffer for it.
*
* The function will set AVFrame.data[], AVFrame.linesize[].
* AVFrame.extended_data[] must also be set, but it should be the same as
* AVFrame.data[] except for planar audio with more channels than can fit
* in AVFrame.data[]. In that case, AVFrame.data[] shall still contain as
* many data pointers as it can hold.
*
* if CODEC_CAP_DR1 is not set then get_buffer() must call
* avcodec_default_get_buffer() instead of providing buffers allocated by
* some other means.
*
* AVFrame.data[] should be 32- or 16-byte-aligned unless the CPU doesn't
* need it. avcodec_default_get_buffer() aligns the output buffer properly,
* but if get_buffer() is overridden then alignment considerations should
* be taken into account.
*
* @see avcodec_default_get_buffer()
*
* Video:
*
* If pic.reference is set then the frame will be read later by libavcodec.
* avcodec_align_dimensions2() should be used to find the required width and
* height, as they normally need to be rounded up to the next multiple of 16.
*
* If frame multithreading is used and thread_safe_callbacks is set,
* it may be called from a different thread, but not from more than one at
* once. Does not need to be reentrant.
*
* @see release_buffer(), reget_buffer()
* @see avcodec_align_dimensions2()
*
* Audio:
*
* Decoders request a buffer of a particular size by setting
* AVFrame.nb_samples prior to calling get_buffer(). The decoder may,
* however, utilize only part of the buffer by setting AVFrame.nb_samples
* to a smaller value in the output frame.
*
* Decoders cannot use the buffer after returning from
* avcodec_decode_audio4(), so they will not call release_buffer(), as it
* is assumed to be released immediately upon return.
*
* As a convenience, av_samples_get_buffer_size() and
* av_samples_fill_arrays() in libavutil may be used by custom get_buffer()
* functions to find the required data size and to fill data pointers and
* linesize. In AVFrame.linesize, only linesize[0] may be set for audio
* since all planes must be the same size.
*
* @see av_samples_get_buffer_size(), av_samples_fill_arrays()
*
* - encoding: unused
* - decoding: Set by libavcodec, user can override.
*/
int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
/**
* Called to release buffers which were allocated with get_buffer.
* A released buffer can be reused in get_buffer().
* pic.data[*] must be set to NULL.
* May be called from a different thread if frame multithreading is used,
* but not by more than one thread at once, so does not need to be reentrant.
* - encoding: unused
* - decoding: Set by libavcodec, user can override.
*/
void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
/**
* Called at the beginning of a frame to get cr buffer for it.
* Buffer type (size, hints) must be the same. libavcodec won't check it.
* libavcodec will pass previous buffer in pic, function should return
* same buffer or new buffer with old frame "painted" into it.
* If pic.data[0] == NULL must behave like get_buffer().
* if CODEC_CAP_DR1 is not set then reget_buffer() must call
* avcodec_default_reget_buffer() instead of providing buffers allocated by
* some other means.
* - encoding: unused
* - decoding: Set by libavcodec, user can override.
*/
int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
/* - encoding parameters */
float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
/**
* minimum quantizer
* - encoding: Set by user.
* - decoding: unused
*/
int qmin;
/**
* maximum quantizer
* - encoding: Set by user.
* - decoding: unused
*/
int qmax;
/**
* maximum quantizer difference between frames
* - encoding: Set by user.
* - decoding: unused
*/
int max_qdiff;
/**
* ratecontrol qmin qmax limiting method
* 0-> clipping, 1-> use a nice continuous function to limit qscale wthin qmin/qmax.
* - encoding: Set by user.
* - decoding: unused
*/
float rc_qsquish;
float rc_qmod_amp;
int rc_qmod_freq;
/**
* decoder bitstream buffer size
* - encoding: Set by user.
* - decoding: unused
*/
int rc_buffer_size;
/**
* ratecontrol override, see RcOverride
* - encoding: Allocated/set/freed by user.
* - decoding: unused
*/
int rc_override_count;
RcOverride *rc_override;
/**
* rate control equation
* - encoding: Set by user
* - decoding: unused
*/
const char *rc_eq;
/**
* maximum bitrate
* - encoding: Set by user.
* - decoding: unused
*/
int rc_max_rate;
/**
* minimum bitrate
* - encoding: Set by user.
* - decoding: unused
*/
int rc_min_rate;
float rc_buffer_aggressivity;
/**
* initial complexity for pass1 ratecontrol
* - encoding: Set by user.
* - decoding: unused
*/
float rc_initial_cplx;
/**
* Ratecontrol attempt to use, at maximum, <value> of what can be used without an underflow.
* - encoding: Set by user.
* - decoding: unused.
*/
float rc_max_available_vbv_use;
/**
* Ratecontrol attempt to use, at least, <value> times the amount needed to prevent a vbv overflow.
* - encoding: Set by user.
* - decoding: unused.
*/
float rc_min_vbv_overflow_use;
/**
* Number of bits which should be loaded into the rc buffer before decoding starts.
* - encoding: Set by user.
* - decoding: unused
*/
int rc_initial_buffer_occupancy;
#define FF_CODER_TYPE_VLC 0
#define FF_CODER_TYPE_AC 1
#define FF_CODER_TYPE_RAW 2
#define FF_CODER_TYPE_RLE 3
#define FF_CODER_TYPE_DEFLATE 4
/**
* coder type
* - encoding: Set by user.
* - decoding: unused
*/
int coder_type;
/**
* context model
* - encoding: Set by user.
* - decoding: unused
*/
int context_model;
/**
* minimum Lagrange multipler
* - encoding: Set by user.
* - decoding: unused
*/
int lmin;
/**
* maximum Lagrange multipler
* - encoding: Set by user.
* - decoding: unused
*/
int lmax;
/**
* frame skip threshold
* - encoding: Set by user.
* - decoding: unused
*/
int frame_skip_threshold;
/**
* frame skip factor
* - encoding: Set by user.
* - decoding: unused
*/
int frame_skip_factor;
/**
* frame skip exponent
* - encoding: Set by user.
* - decoding: unused
*/
int frame_skip_exp;
/**
* frame skip comparison function
* - encoding: Set by user.
* - decoding: unused
*/
int frame_skip_cmp;
/**
* trellis RD quantization
* - encoding: Set by user.
* - decoding: unused
*/
int trellis;
/**
* - encoding: Set by user.
* - decoding: unused
*/
int min_prediction_order;
/**
* - encoding: Set by user.
* - decoding: unused
*/
int max_prediction_order;
/**
* GOP timecode frame start number
* - encoding: Set by user, in non drop frame format
* - decoding: Set by libavcodec (timecode in the 25 bits format, -1 if unset)
*/
int64_t timecode_frame_start;
/* The RTP callback: This function is called */
/* every time the encoder has a packet to send. */
/* It depends on the encoder if the data starts */
/* with a Start Code (it should). H.263 does. */
/* mb_nb contains the number of macroblocks */
/* encoded in the RTP payload. */
void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
int rtp_payload_size; /* The size of the RTP payload: the coder will */
/* do its best to deliver a chunk with size */
/* below rtp_payload_size, the chunk will start */
/* with a start code on some codecs like H.263. */
/* This doesn't take account of any particular */
/* headers inside the transmitted RTP payload. */
/* statistics, used for 2-pass encoding */
int mv_bits;
int header_bits;
int i_tex_bits;
int p_tex_bits;
int i_count;
int p_count;
int skip_count;
int misc_bits;
/**
* number of bits used for the previously encoded frame
* - encoding: Set by libavcodec.
* - decoding: unused
*/
int frame_bits;
/**
* pass1 encoding statistics output buffer
* - encoding: Set by libavcodec.
* - decoding: unused
*/
char *stats_out;
/**
* pass2 encoding statistics input buffer
* Concatenated stuff from stats_out of pass1 should be placed here.
* - encoding: Allocated/set/freed by user.
* - decoding: unused
*/
char *stats_in;
/**
* Work around bugs in encoders which sometimes cannot be detected automatically.
* - encoding: Set by user
* - decoding: Set by user
*/
int workaround_bugs;
#define FF_BUG_AUTODETECT 1 ///< autodetection
#define FF_BUG_OLD_MSMPEG4 2
#define FF_BUG_XVID_ILACE 4
#define FF_BUG_UMP4 8
#define FF_BUG_NO_PADDING 16
#define FF_BUG_AMV 32
#define FF_BUG_AC_VLC 0 ///< Will be removed, libavcodec can now handle these non-compliant files by default.
#define FF_BUG_QPEL_CHROMA 64
#define FF_BUG_STD_QPEL 128
#define FF_BUG_QPEL_CHROMA2 256
#define FF_BUG_DIRECT_BLOCKSIZE 512
#define FF_BUG_EDGE 1024
#define FF_BUG_HPEL_CHROMA 2048
#define FF_BUG_DC_CLIP 4096
#define FF_BUG_MS 8192 ///< Work around various bugs in Microsoft's broken decoders.
#define FF_BUG_TRUNCATED 16384
/**
* strictly follow the standard (MPEG4, ...).
* - encoding: Set by user.
* - decoding: Set by user.
* Setting this to STRICT or higher means the encoder and decoder will
* generally do stupid things, whereas setting it to unofficial or lower
* will mean the encoder might produce output that is not supported by all
* spec-compliant decoders. Decoders don't differentiate between normal,
* unofficial and experimental (that is, they always try to decode things
* when they can) unless they are explicitly asked to behave stupidly
* (=strictly conform to the specs)
*/
int strict_std_compliance;
#define FF_COMPLIANCE_VERY_STRICT 2 ///< Strictly conform to an older more strict version of the spec or reference software.
#define FF_COMPLIANCE_STRICT 1 ///< Strictly conform to all the things in the spec no matter what consequences.
#define FF_COMPLIANCE_NORMAL 0
#define FF_COMPLIANCE_UNOFFICIAL -1 ///< Allow unofficial extensions
#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental things.
/**
* error concealment flags
* - encoding: unused
* - decoding: Set by user.
*/
int error_concealment;
#define FF_EC_GUESS_MVS 1
#define FF_EC_DEBLOCK 2
/**
* debug
* - encoding: Set by user.
* - decoding: Set by user.
*/
int debug;
#define FF_DEBUG_PICT_INFO 1
#define FF_DEBUG_RC 2
#define FF_DEBUG_BITSTREAM 4
#define FF_DEBUG_MB_TYPE 8
#define FF_DEBUG_QP 16
#define FF_DEBUG_MV 32
#define FF_DEBUG_DCT_COEFF 0x00000040
#define FF_DEBUG_SKIP 0x00000080
#define FF_DEBUG_STARTCODE 0x00000100
#define FF_DEBUG_PTS 0x00000200
#define FF_DEBUG_ER 0x00000400
#define FF_DEBUG_MMCO 0x00000800
#define FF_DEBUG_BUGS 0x00001000
#define FF_DEBUG_VIS_QP 0x00002000
#define FF_DEBUG_VIS_MB_TYPE 0x00004000
#define FF_DEBUG_BUFFERS 0x00008000
#define FF_DEBUG_THREADS 0x00010000
/**
* debug
* - encoding: Set by user.
* - decoding: Set by user.
*/
int debug_mv;
#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
/**
* Error recognition; may misdetect some more or less valid parts as errors.
* - encoding: unused
* - decoding: Set by user.
*/
int err_recognition;
#define AV_EF_CRCCHECK (1<<0)
#define AV_EF_BITSTREAM (1<<1)
#define AV_EF_BUFFER (1<<2)
#define AV_EF_EXPLODE (1<<3)
#define AV_EF_CAREFUL (1<<16)
#define AV_EF_COMPLIANT (1<<17)
#define AV_EF_AGGRESSIVE (1<<18)
/**
* opaque 64bit number (generally a PTS) that will be reordered and
* output in AVFrame.reordered_opaque
* @deprecated in favor of pkt_pts
* - encoding: unused
* - decoding: Set by user.
*/
int64_t reordered_opaque;
/**
* Hardware accelerator in use
* - encoding: unused.
* - decoding: Set by libavcodec
*/
struct AVHWAccel *hwaccel;
/**
* Hardware accelerator context.
* For some hardware accelerators, a global context needs to be
* provided by the user. In that case, this holds display-dependent
* data FFmpeg cannot instantiate itself. Please refer to the
* FFmpeg HW accelerator documentation to know how to fill this
* is. e.g. for VA API, this is a struct vaapi_context.
* - encoding: unused
* - decoding: Set by user
*/
void *hwaccel_context;
/**
* error
* - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
* - decoding: unused
*/
uint64_t error[AV_NUM_DATA_POINTERS];
/**
* DCT algorithm, see FF_DCT_* below
* - encoding: Set by user.
* - decoding: unused
*/
int dct_algo;
#define FF_DCT_AUTO 0
#define FF_DCT_FASTINT 1
#define FF_DCT_INT 2
#define FF_DCT_MMX 3
#define FF_DCT_ALTIVEC 5
#define FF_DCT_FAAN 6
/**
* IDCT algorithm, see FF_IDCT_* below.
* - encoding: Set by user.
* - decoding: Set by user.
*/
int idct_algo;
#define FF_IDCT_AUTO 0
#define FF_IDCT_INT 1
#define FF_IDCT_SIMPLE 2
#define FF_IDCT_SIMPLEMMX 3
#define FF_IDCT_LIBMPEG2MMX 4
#define FF_IDCT_MMI 5
#define FF_IDCT_ARM 7
#define FF_IDCT_ALTIVEC 8
#define FF_IDCT_SH4 9
#define FF_IDCT_SIMPLEARM 10
#define FF_IDCT_H264 11
#define FF_IDCT_VP3 12
#define FF_IDCT_IPP 13
#define FF_IDCT_XVIDMMX 14
#define FF_IDCT_CAVS 15
#define FF_IDCT_SIMPLEARMV5TE 16
#define FF_IDCT_SIMPLEARMV6 17
#define FF_IDCT_SIMPLEVIS 18
#define FF_IDCT_WMV2 19
#define FF_IDCT_FAAN 20
#define FF_IDCT_EA 21
#define FF_IDCT_SIMPLENEON 22
#define FF_IDCT_SIMPLEALPHA 23
#define FF_IDCT_BINK 24
#if FF_API_DSP_MASK
/**
* Unused.
* @deprecated use av_set_cpu_flags_mask() instead.
*/
attribute_deprecated unsigned dsp_mask;
#endif
/**
* bits per sample/pixel from the demuxer (needed for huffyuv).
* - encoding: Set by libavcodec.
* - decoding: Set by user.
*/
int bits_per_coded_sample;
/**
* Bits per sample/pixel of internal libavcodec pixel/sample format.
* - encoding: set by user.
* - decoding: set by libavcodec.
*/
int bits_per_raw_sample;
/**
* low resolution decoding, 1-> 1/2 size, 2->1/4 size
* - encoding: unused
* - decoding: Set by user.
*/
int lowres;
/**
* the picture in the bitstream
* - encoding: Set by libavcodec.
* - decoding: Set by libavcodec.
*/
AVFrame *coded_frame;
/**
* thread count
* is used to decide how many independent tasks should be passed to execute()
* - encoding: Set by user.
* - decoding: Set by user.
*/
int thread_count;
/**
* Which multithreading methods to use.
* Use of FF_THREAD_FRAME will increase decoding delay by one frame per thread,
* so clients which cannot provide future frames should not use it.
*
* - encoding: Set by user, otherwise the default is used.
* - decoding: Set by user, otherwise the default is used.
*/
int thread_type;
#define FF_THREAD_FRAME 1 ///< Decode more than one frame at once
#define FF_THREAD_SLICE 2 ///< Decode more than one part of a single frame at once
/**
* Which multithreading methods are in use by the codec.
* - encoding: Set by libavcodec.
* - decoding: Set by libavcodec.
*/
int active_thread_type;
/**
* Set by the client if its custom get_buffer() callback can be called
* synchronously from another thread, which allows faster multithreaded decoding.
* draw_horiz_band() will be called from other threads regardless of this setting.
* Ignored if the default get_buffer() is used.
* - encoding: Set by user.
* - decoding: Set by user.
*/
int thread_safe_callbacks;
/**
* The codec may call this to execute several independent things.
* It will return only after finishing all tasks.
* The user may replace this with some multithreaded implementation,
* the default implementation will execute the parts serially.
* @param count the number of things to execute
* - encoding: Set by libavcodec, user can override.
* - decoding: Set by libavcodec, user can override.
*/
int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size);
/**
* The codec may call this to execute several independent things.
* It will return only after finishing all tasks.
* The user may replace this with some multithreaded implementation,
* the default implementation will execute the parts serially.
* Also see avcodec_thread_init and e.g. the --enable-pthread configure option.
* @param c context passed also to func
* @param count the number of things to execute
* @param arg2 argument passed unchanged to func
* @param ret return values of executed functions, must have space for "count" values. May be NULL.
* @param func function that will be called count times, with jobnr from 0 to count-1.
* threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no
* two instances of func executing at the same time will have the same threadnr.
* @return always 0 currently, but code should handle a future improvement where when any call to func
* returns < 0 no further calls to func may be done and < 0 is returned.
* - encoding: Set by libavcodec, user can override.
* - decoding: Set by libavcodec, user can override.
*/
int (*execute2)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count);
/**
* thread opaque
* Can be used by execute() to store some per AVCodecContext stuff.
* - encoding: set by execute()
* - decoding: set by execute()
*/
void *thread_opaque;
/**
* noise vs. sse weight for the nsse comparsion function
* - encoding: Set by user.
* - decoding: unused
*/
int nsse_weight;
/**
* profile
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*/
int profile;
#define FF_PROFILE_UNKNOWN -99
#define FF_PROFILE_RESERVED -100
#define FF_PROFILE_AAC_MAIN 0
#define FF_PROFILE_AAC_LOW 1
#define FF_PROFILE_AAC_SSR 2
#define FF_PROFILE_AAC_LTP 3
#define FF_PROFILE_AAC_HE 4
#define FF_PROFILE_AAC_HE_V2 28
#define FF_PROFILE_AAC_LD 22
#define FF_PROFILE_AAC_ELD 38
#define FF_PROFILE_DTS 20
#define FF_PROFILE_DTS_ES 30
#define FF_PROFILE_DTS_96_24 40
#define FF_PROFILE_DTS_HD_HRA 50
#define FF_PROFILE_DTS_HD_MA 60
#define FF_PROFILE_MPEG2_422 0
#define FF_PROFILE_MPEG2_HIGH 1
#define FF_PROFILE_MPEG2_SS 2
#define FF_PROFILE_MPEG2_SNR_SCALABLE 3
#define FF_PROFILE_MPEG2_MAIN 4
#define FF_PROFILE_MPEG2_SIMPLE 5
#define FF_PROFILE_H264_CONSTRAINED (1<<9) // 8+1; constraint_set1_flag
#define FF_PROFILE_H264_INTRA (1<<11) // 8+3; constraint_set3_flag
#define FF_PROFILE_H264_BASELINE 66
#define FF_PROFILE_H264_CONSTRAINED_BASELINE (66|FF_PROFILE_H264_CONSTRAINED)
#define FF_PROFILE_H264_MAIN 77
#define FF_PROFILE_H264_EXTENDED 88
#define FF_PROFILE_H264_HIGH 100
#define FF_PROFILE_H264_HIGH_10 110
#define FF_PROFILE_H264_HIGH_10_INTRA (110|FF_PROFILE_H264_INTRA)
#define FF_PROFILE_H264_HIGH_422 122
#define FF_PROFILE_H264_HIGH_422_INTRA (122|FF_PROFILE_H264_INTRA)
#define FF_PROFILE_H264_HIGH_444 144
#define FF_PROFILE_H264_HIGH_444_PREDICTIVE 244
#define FF_PROFILE_H264_HIGH_444_INTRA (244|FF_PROFILE_H264_INTRA)
#define FF_PROFILE_H264_CAVLC_444 44
#define FF_PROFILE_VC1_SIMPLE 0
#define FF_PROFILE_VC1_MAIN 1
#define FF_PROFILE_VC1_COMPLEX 2
#define FF_PROFILE_VC1_ADVANCED 3
#define FF_PROFILE_MPEG4_SIMPLE 0
#define FF_PROFILE_MPEG4_SIMPLE_SCALABLE 1
#define FF_PROFILE_MPEG4_CORE 2
#define FF_PROFILE_MPEG4_MAIN 3
#define FF_PROFILE_MPEG4_N_BIT 4
#define FF_PROFILE_MPEG4_SCALABLE_TEXTURE 5
#define FF_PROFILE_MPEG4_SIMPLE_FACE_ANIMATION 6
#define FF_PROFILE_MPEG4_BASIC_ANIMATED_TEXTURE 7
#define FF_PROFILE_MPEG4_HYBRID 8
#define FF_PROFILE_MPEG4_ADVANCED_REAL_TIME 9
#define FF_PROFILE_MPEG4_CORE_SCALABLE 10
#define FF_PROFILE_MPEG4_ADVANCED_CODING 11
#define FF_PROFILE_MPEG4_ADVANCED_CORE 12
#define FF_PROFILE_MPEG4_ADVANCED_SCALABLE_TEXTURE 13
#define FF_PROFILE_MPEG4_SIMPLE_STUDIO 14
#define FF_PROFILE_MPEG4_ADVANCED_SIMPLE 15
/**
* level
* - encoding: Set by user.
* - decoding: Set by libavcodec.
*/
int level;
#define FF_LEVEL_UNKNOWN -99
/**
*
* - encoding: unused
* - decoding: Set by user.
*/
enum AVDiscard skip_loop_filter;
/**
*
* - encoding: unused
* - decoding: Set by user.
*/
enum AVDiscard skip_idct;
/**
*
* - encoding: unused
* - decoding: Set by user.
*/
enum AVDiscard skip_frame;
/**
* Header containing style information for text subtitles.
* For SUBTITLE_ASS subtitle type, it should contain the whole ASS
* [Script Info] and [V4+ Styles] section, plus the [Events] line and
* the Format line following. It shouldn't include any Dialogue line.
* - encoding: Set/allocated/freed by user (before avcodec_open2())
* - decoding: Set/allocated/freed by libavcodec (by avcodec_open2())
*/
uint8_t *subtitle_header;
int subtitle_header_size;
/**
* Simulates errors in the bitstream to test error concealment.
* - encoding: Set by user.
* - decoding: unused
*/
int error_rate;
/**
* Current packet as passed into the decoder, to avoid having
* to pass the packet into every function. Currently only valid
* inside lavc and get/release_buffer callbacks.
* - decoding: set by avcodec_decode_*, read by get_buffer() for setting pkt_pts
* - encoding: unused
*/
AVPacket *pkt;
/**
* VBV delay coded in the last frame (in periods of a 27 MHz clock).
* Used for compliant TS muxing.
* - encoding: Set by libavcodec.
* - decoding: unused.
*/
uint64_t vbv_delay;
/**
* Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
* Code outside libavcodec should access this field using:
* avcodec_set_pkt_timebase(avctx)
* - encoding unused.
* - decodimg set by user
*/
AVRational pkt_timebase;
/**
* AVCodecDescriptor
* Code outside libavcodec should access this field using:
* avcodec_get_codec_descriptior(avctx)
* - encoding: unused.
* - decoding: set by libavcodec.
*/
const AVCodecDescriptor *codec_descriptor;
/**
* Current statistics for PTS correction.
* - decoding: maintained and used by libavcodec, not intended to be used by user apps
* - encoding: unused
*/
int64_t pts_correction_num_faulty_pts; /// Number of incorrect PTS values so far
int64_t pts_correction_num_faulty_dts; /// Number of incorrect DTS values so far
int64_t pts_correction_last_pts; /// PTS of the last frame
int64_t pts_correction_last_dts; /// DTS of the last frame
} AVCodecContext;
AVRational av_codec_get_pkt_timebase (const AVCodecContext *avctx);
void av_codec_set_pkt_timebase (AVCodecContext *avctx, AVRational val);
const AVCodecDescriptor *av_codec_get_codec_descriptor(const AVCodecContext *avctx);
void av_codec_set_codec_descriptor(AVCodecContext *avctx, const AVCodecDescriptor *desc);
/**
* AVProfile.
*/
typedef struct AVProfile {
int profile;
const char *name; ///< short name for the profile
} AVProfile;
typedef struct AVCodecDefault AVCodecDefault;
/**
* AVCodec.
*/
typedef struct AVCodec {
/**
* Name of the codec implementation.
* The name is globally unique among encoders and among decoders (but an
* encoder and a decoder can share the same name).
* This is the primary way to find a codec from the user perspective.
*/
const char *name;
/**
* Descriptive name for the codec, meant to be more human readable than name.
* You should use the NULL_IF_CONFIG_SMALL() macro to define it.
*/
const char *long_name;
enum AVMediaType type;
enum AVCodecID id;
/**
* Codec capabilities.
* see CODEC_CAP_*
*/
int capabilities;
const AVRational *supported_framerates; ///< array of supported framerates, or NULL if any, array is terminated by {0,0}
const enum PixelFormat *pix_fmts; ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1
const int *supported_samplerates; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0
const enum AVSampleFormat *sample_fmts; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1
const uint64_t *channel_layouts; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0
uint8_t max_lowres; ///< maximum value for lowres supported by the decoder
const AVClass *priv_class; ///< AVClass for the private context
const AVProfile *profiles; ///< array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN}
/*****************************************************************
* No fields below this line are part of the public API. They
* may not be used outside of libavcodec and can be changed and
* removed at will.
* New public fields should be added right above.
*****************************************************************
*/
int priv_data_size;
struct AVCodec *next;
/**
* @name Frame-level threading support functions
* @{
*/
/**
* If defined, called on thread contexts when they are created.
* If the codec allocates writable tables in init(), re-allocate them here.
* priv_data will be set to a copy of the original.
*/
int (*init_thread_copy)(AVCodecContext *);
/**
* Copy necessary context variables from a previous thread context to the current one.
* If not defined, the next thread will start automatically; otherwise, the codec
* must call ff_thread_finish_setup().
*
* dst and src will (rarely) point to the same context, in which case memcpy should be skipped.
*/
int (*update_thread_context)(AVCodecContext *dst, const AVCodecContext *src);
/** @} */
/**
* Private codec-specific defaults.
*/
const AVCodecDefault *defaults;
/**
* Initialize codec static data, called from avcodec_register().
*/
void (*init_static_data)(struct AVCodec *codec);
int (*init)(AVCodecContext *);
int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
/**
* Encode data to an AVPacket.
*
* @param avctx codec context
* @param avpkt output AVPacket (may contain a user-provided buffer)
* @param[in] frame AVFrame containing the raw data to be encoded
* @param[out] got_packet_ptr encoder sets to 0 or 1 to indicate that a
* non-empty packet was returned in avpkt.
* @return 0 on success, negative error code on failure
*/
int (*encode2)(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame,
int *got_packet_ptr);
int (*decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt);
int (*close)(AVCodecContext *);
/**
* Flush buffers.
* Will be called when seeking
*/
void (*flush)(AVCodecContext *);
} AVCodec;
/**
* AVHWAccel.
*/
typedef struct AVHWAccel {
/**
* Name of the hardware accelerated codec.
* The name is globally unique among encoders and among decoders (but an
* encoder and a decoder can share the same name).
*/
const char *name;
/**
* Type of codec implemented by the hardware accelerator.
*
* See AVMEDIA_TYPE_xxx
*/
enum AVMediaType type;
/**
* Codec implemented by the hardware accelerator.
*
* See AV_CODEC_ID_xxx
*/
enum AVCodecID id;
/**
* Supported pixel format.
*
* Only hardware accelerated formats are supported here.
*/
enum PixelFormat pix_fmt;
/**
* Hardware accelerated codec capabilities.
* see FF_HWACCEL_CODEC_CAP_*
*/
int capabilities;
struct AVHWAccel *next;
/**
* Called at the beginning of each frame or field picture.
*
* Meaningful frame information (codec specific) is guaranteed to
* be parsed at this point. This function is mandatory.
*
* Note that buf can be NULL along with buf_size set to 0.
* Otherwise, this means the whole frame is available at this point.
*
* @param avctx the codec context
* @param buf the frame data buffer base
* @param buf_size the size of the frame in bytes
* @return zero if successful, a negative value otherwise
*/
int (*start_frame)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
/**
* Callback for each slice.
*
* Meaningful slice information (codec specific) is guaranteed to
* be parsed at this point. This function is mandatory.
*
* @param avctx the codec context
* @param buf the slice data buffer base
* @param buf_size the size of the slice in bytes
* @return zero if successful, a negative value otherwise
*/
int (*decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
/**
* Called at the end of each frame or field picture.
*
* The whole picture is parsed at this point and can now be sent
* to the hardware accelerator. This function is mandatory.
*
* @param avctx the codec context
* @return zero if successful, a negative value otherwise
*/
int (*end_frame)(AVCodecContext *avctx);
/**
* Size of HW accelerator private data.
*
* Private data is allocated with av_mallocz() before
* AVCodecContext.get_buffer() and deallocated after
* AVCodecContext.release_buffer().
*/
int priv_data_size;
} AVHWAccel;
/**
* @defgroup lavc_picture AVPicture
*
* Functions for working with AVPicture
* @{
*/
/**
* four components are given, that's all.
* the last component is alpha
*/
typedef struct AVPicture {
uint8_t *data[AV_NUM_DATA_POINTERS];
int linesize[AV_NUM_DATA_POINTERS]; ///< number of bytes per line
} AVPicture;
/**
* @}
*/
enum AVSubtitleType {
SUBTITLE_NONE,
SUBTITLE_BITMAP, ///< A bitmap, pict will be set
/**
* Plain text, the text field must be set by the decoder and is
* authoritative. ass and pict fields may contain approximations.
*/
SUBTITLE_TEXT,
/**
* Formatted text, the ass field must be set by the decoder and is
* authoritative. pict and text fields may contain approximations.
*/
SUBTITLE_ASS,
};
typedef struct AVSubtitleRect {
int x; ///< top left corner of pict, undefined when pict is not set
int y; ///< top left corner of pict, undefined when pict is not set
int w; ///< width of pict, undefined when pict is not set
int h; ///< height of pict, undefined when pict is not set
int nb_colors; ///< number of colors in pict, undefined when pict is not set
/**
* data+linesize for the bitmap of this subtitle.
* can be set for text/ass as well once they where rendered
*/
AVPicture pict;
enum AVSubtitleType type;
char *text; ///< 0 terminated plain UTF-8 text
/**
* 0 terminated ASS/SSA compatible event line.
* The presentation of this is unaffected by the other values in this
* struct.
*/
char *ass;
/**
* 1 indicates this subtitle is a forced subtitle.
* A forced subtitle should be displayed even when subtitles are hidden.
*/
int forced;
} AVSubtitleRect;
typedef struct AVSubtitle {
uint16_t format; /* 0 = graphics */
uint32_t start_display_time; /* relative to packet pts, in ms */
uint32_t end_display_time; /* relative to packet pts, in ms */
unsigned num_rects;
AVSubtitleRect **rects;
int64_t pts; ///< Same as packet pts, in AV_TIME_BASE
} AVSubtitle;
/**
* If c is NULL, returns the first registered codec,
* if c is non-NULL, returns the next registered codec after c,
* or NULL if c is the last one.
*/
AVCodec *av_codec_next(const AVCodec *c);
/**
* Return the LIBAVCODEC_VERSION_INT constant.
*/
unsigned avcodec_version(void);
/**
* Return the libavcodec build-time configuration.
*/
const char *avcodec_configuration(void);
/**
* Return the libavcodec license.
*/
const char *avcodec_license(void);
/**
* Register the codec codec and initialize libavcodec.
*
* @warning either this function or avcodec_register_all() must be called
* before any other libavcodec functions.
*
* @see avcodec_register_all()
*/
void avcodec_register(AVCodec *codec);
/**
* Register all the codecs, parsers and bitstream filters which were enabled at
* configuration time. If you do not call this function you can select exactly
* which formats you want to support, by using the individual registration
* functions.
*
* @see avcodec_register
* @see av_register_codec_parser
* @see av_register_bitstream_filter
*/
void avcodec_register_all(void);
#if FF_API_ALLOC_CONTEXT
/**
* Allocate an AVCodecContext and set its fields to default values. The
* resulting struct can be deallocated by simply calling av_free().
*
* @return An AVCodecContext filled with default values or NULL on failure.
* @see avcodec_get_context_defaults
*
* @deprecated use avcodec_alloc_context3()
*/
attribute_deprecated
AVCodecContext *avcodec_alloc_context(void);
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
* we WILL change its arguments and name a few times! */
attribute_deprecated
AVCodecContext *avcodec_alloc_context2(enum AVMediaType);
/**
* Set the fields of the given AVCodecContext to default values.
*
* @param s The AVCodecContext of which the fields should be set to default values.
* @deprecated use avcodec_get_context_defaults3
*/
attribute_deprecated
void avcodec_get_context_defaults(AVCodecContext *s);
/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
* we WILL change its arguments and name a few times! */
attribute_deprecated
void avcodec_get_context_defaults2(AVCodecContext *s, enum AVMediaType);
#endif
/**
* Allocate an AVCodecContext and set its fields to default values. The
* resulting struct can be deallocated by calling avcodec_close() on it followed
* by av_free().
*
* @param codec if non-NULL, allocate private data and initialize defaults
* for the given codec. It is illegal to then call avcodec_open2()
* with a different codec.
* If NULL, then the codec-specific defaults won't be initialized,
* which may result in suboptimal default settings (this is
* important mainly for encoders, e.g. libx264).
*
* @return An AVCodecContext filled with default values or NULL on failure.
* @see avcodec_get_context_defaults
*/
AVCodecContext *avcodec_alloc_context3(const AVCodec *codec);
/**
* Set the fields of the given AVCodecContext to default values corresponding
* to the given codec (defaults may be codec-dependent).
*
* Do not call this function if a non-NULL codec has been passed
* to avcodec_alloc_context3() that allocated this AVCodecContext.
* If codec is non-NULL, it is illegal to call avcodec_open2() with a
* different codec on this AVCodecContext.
*/
int avcodec_get_context_defaults3(AVCodecContext *s, const AVCodec *codec);
/**
* Get the AVClass for AVCodecContext. It can be used in combination with
* AV_OPT_SEARCH_FAKE_OBJ for examining options.
*
* @see av_opt_find().
*/
const AVClass *avcodec_get_class(void);
/**
* Get the AVClass for AVFrame. It can be used in combination with
* AV_OPT_SEARCH_FAKE_OBJ for examining options.
*
* @see av_opt_find().
*/
const AVClass *avcodec_get_frame_class(void);
/**
* Get the AVClass for AVSubtitleRect. It can be used in combination with
* AV_OPT_SEARCH_FAKE_OBJ for examining options.
*
* @see av_opt_find().
*/
const AVClass *avcodec_get_subtitle_rect_class(void);
/**
* Copy the settings of the source AVCodecContext into the destination
* AVCodecContext. The resulting destination codec context will be
* unopened, i.e. you are required to call avcodec_open2() before you
* can use this AVCodecContext to decode/encode video/audio data.
*
* @param dest target codec context, should be initialized with
* avcodec_alloc_context3(), but otherwise uninitialized
* @param src source codec context
* @return AVERROR() on error (e.g. memory allocation error), 0 on success
*/
int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src);
/**
* Allocate an AVFrame and set its fields to default values. The resulting
* struct can be deallocated by simply calling av_free().
*
* @return An AVFrame filled with default values or NULL on failure.
* @see avcodec_get_frame_defaults
*/
AVFrame *avcodec_alloc_frame(void);
/**
* Set the fields of the given AVFrame to default values.
*
* @param pic The AVFrame of which the fields should be set to default values.
*/
void avcodec_get_frame_defaults(AVFrame *pic);
#if FF_API_AVCODEC_OPEN
/**
* Initialize the AVCodecContext to use the given AVCodec. Prior to using this
* function the context has to be allocated.
*
* The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
* avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
* retrieving a codec.
*
* @warning This function is not thread safe!
*
* @code
* avcodec_register_all();
* codec = avcodec_find_decoder(AV_CODEC_ID_H264);
* if (!codec)
* exit(1);
*
* context = avcodec_alloc_context3(codec);
*
* if (avcodec_open(context, codec) < 0)
* exit(1);
* @endcode
*
* @param avctx The context which will be set up to use the given codec.
* @param codec The codec to use within the context.
* @return zero on success, a negative value on error
* @see avcodec_alloc_context3, avcodec_find_decoder, avcodec_find_encoder, avcodec_close
*
* @deprecated use avcodec_open2
*/
attribute_deprecated
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
#endif
/**
* Initialize the AVCodecContext to use the given AVCodec. Prior to using this
* function the context has to be allocated with avcodec_alloc_context3().
*
* The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
* avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
* retrieving a codec.
*
* @warning This function is not thread safe!
*
* @code
* avcodec_register_all();
* av_dict_set(&opts, "b", "2.5M", 0);
* codec = avcodec_find_decoder(AV_CODEC_ID_H264);
* if (!codec)
* exit(1);
*
* context = avcodec_alloc_context3(codec);
*
* if (avcodec_open2(context, codec, opts) < 0)
* exit(1);
* @endcode
*
* @param avctx The context to initialize.
* @param codec The codec to open this context for. If a non-NULL codec has been
* previously passed to avcodec_alloc_context3() or
* avcodec_get_context_defaults3() for this context, then this
* parameter MUST be either NULL or equal to the previously passed
* codec.
* @param options A dictionary filled with AVCodecContext and codec-private options.
* On return this object will be filled with options that were not found.
*
* @return zero on success, a negative value on error
* @see avcodec_alloc_context3(), avcodec_find_decoder(), avcodec_find_encoder(),
* av_dict_set(), av_opt_find().
*/
int avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options);
/**
* Close a given AVCodecContext and free all the data associated with it
* (but not the AVCodecContext itself).
*
* Calling this function on an AVCodecContext that hasn't been opened will free
* the codec-specific data allocated in avcodec_alloc_context3() /
* avcodec_get_context_defaults3() with a non-NULL codec. Subsequent calls will
* do nothing.
*/
int avcodec_close(AVCodecContext *avctx);
/**
* Free all allocated data in the given subtitle struct.
*
* @param sub AVSubtitle to free.
*/
void avsubtitle_free(AVSubtitle *sub);
/**
* @}
*/
/**
* @addtogroup lavc_packet
* @{
*/
/**
* @deprecated use NULL instead
*/
attribute_deprecated void av_destruct_packet_nofree(AVPacket *pkt);
/**
* Default packet destructor.
*/
void av_destruct_packet(AVPacket *pkt);
/**
* Initialize optional fields of a packet with default values.
*
* Note, this does not touch the data and size members, which have to be
* initialized separately.
*
* @param pkt packet
*/
void av_init_packet(AVPacket *pkt);
/**
* Allocate the payload of a packet and initialize its fields with
* default values.
*
* @param pkt packet
* @param size wanted payload size
* @return 0 if OK, AVERROR_xxx otherwise
*/
int av_new_packet(AVPacket *pkt, int size);
/**
* Reduce packet size, correctly zeroing padding
*
* @param pkt packet
* @param size new size
*/
void av_shrink_packet(AVPacket *pkt, int size);
/**
* Increase packet size, correctly zeroing padding
*
* @param pkt packet
* @param grow_by number of bytes by which to increase the size of the packet
*/
int av_grow_packet(AVPacket *pkt, int grow_by);
/**
* @warning This is a hack - the packet memory allocation stuff is broken. The
* packet is allocated if it was not really allocated.
*/
int av_dup_packet(AVPacket *pkt);
/**
* Free a packet.
*
* @param pkt packet to free
*/
void av_free_packet(AVPacket *pkt);
/**
* Allocate new information of a packet.
*
* @param pkt packet
* @param type side information type
* @param size side information size
* @return pointer to fresh allocated data or NULL otherwise
*/
uint8_t* av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
int size);
/**
* Shrink the already allocated side data buffer
*
* @param pkt packet
* @param type side information type
* @param size new side information size
* @return 0 on success, < 0 on failure
*/
int av_packet_shrink_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
int size);
/**
* Get side information from packet.
*
* @param pkt packet
* @param type desired side information type
* @param size pointer for side information size to store (optional)
* @return pointer to data if present or NULL otherwise
*/
uint8_t* av_packet_get_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
int *size);
int av_packet_merge_side_data(AVPacket *pkt);
int av_packet_split_side_data(AVPacket *pkt);
/**
* @}
*/
/**
* @addtogroup lavc_decoding
* @{
*/
/**
* Find a registered decoder with a matching codec ID.
*
* @param id AVCodecID of the requested decoder
* @return A decoder if one was found, NULL otherwise.
*/
AVCodec *avcodec_find_decoder(enum AVCodecID id);
/**
* Find a registered decoder with the specified name.
*
* @param name name of the requested decoder
* @return A decoder if one was found, NULL otherwise.
*/
AVCodec *avcodec_find_decoder_by_name(const char *name);
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
/**
* Return the amount of padding in pixels which the get_buffer callback must
* provide around the edge of the image for codecs which do not have the
* CODEC_FLAG_EMU_EDGE flag.
*
* @return Required padding in pixels.
*/
unsigned avcodec_get_edge_width(void);
/**
* Modify width and height values so that they will result in a memory
* buffer that is acceptable for the codec if you do not use any horizontal
* padding.
*
* May only be used if a codec with CODEC_CAP_DR1 has been opened.
* If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased
* according to avcodec_get_edge_width() before.
*/
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
/**
* Modify width and height values so that they will result in a memory
* buffer that is acceptable for the codec if you also ensure that all
* line sizes are a multiple of the respective linesize_align[i].
*
* May only be used if a codec with CODEC_CAP_DR1 has been opened.
* If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased
* according to avcodec_get_edge_width() before.
*/
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
int linesize_align[AV_NUM_DATA_POINTERS]);
#if FF_API_OLD_DECODE_AUDIO
/**
* Wrapper function which calls avcodec_decode_audio4.
*
* @deprecated Use avcodec_decode_audio4 instead.
*
* Decode the audio frame of size avpkt->size from avpkt->data into samples.
* Some decoders may support multiple frames in a single AVPacket, such
* decoders would then just decode the first frame. In this case,
* avcodec_decode_audio3 has to be called again with an AVPacket that contains
* the remaining data in order to decode the second frame etc.
* If no frame
* could be outputted, frame_size_ptr is zero. Otherwise, it is the
* decompressed frame size in bytes.
*
* @warning You must set frame_size_ptr to the allocated size of the
* output buffer before calling avcodec_decode_audio3().
*
* @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than
* the actual read bytes because some optimized bitstream readers read 32 or 64
* bits at once and could read over the end.
*
* @warning The end of the input buffer avpkt->data should be set to 0 to ensure that
* no overreading happens for damaged MPEG streams.
*
* @warning You must not provide a custom get_buffer() when using
* avcodec_decode_audio3(). Doing so will override it with
* avcodec_default_get_buffer. Use avcodec_decode_audio4() instead,
* which does allow the application to provide a custom get_buffer().
*
* @note You might have to align the input buffer avpkt->data and output buffer
* samples. The alignment requirements depend on the CPU: On some CPUs it isn't
* necessary at all, on others it won't work at all if not aligned and on others
* it will work but it will have an impact on performance.
*
* In practice, avpkt->data should have 4 byte alignment at minimum and
* samples should be 16 byte aligned unless the CPU doesn't need it
* (AltiVec and SSE do).
*
* @note Codecs which have the CODEC_CAP_DELAY capability set have a delay
* between input and output, these need to be fed with avpkt->data=NULL,
* avpkt->size=0 at the end to return the remaining frames.
*
* @param avctx the codec context
* @param[out] samples the output buffer, sample type in avctx->sample_fmt
* If the sample format is planar, each channel plane will
* be the same size, with no padding between channels.
* @param[in,out] frame_size_ptr the output buffer size in bytes
* @param[in] avpkt The input AVPacket containing the input buffer.
* You can create such packet with av_init_packet() and by then setting
* data and size, some decoders might in addition need other fields.
* All decoders are designed to use the least fields possible though.
* @return On error a negative value is returned, otherwise the number of bytes
* used or zero if no frame data was decompressed (used) from the input AVPacket.
*/
attribute_deprecated int avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
int *frame_size_ptr,
AVPacket *avpkt);
#endif
/**
* Decode the audio frame of size avpkt->size from avpkt->data into frame.
*
* Some decoders may support multiple frames in a single AVPacket. Such
* decoders would then just decode the first frame. In this case,
* avcodec_decode_audio4 has to be called again with an AVPacket containing
* the remaining data in order to decode the second frame, etc...
* Even if no frames are returned, the packet needs to be fed to the decoder
* with remaining data until it is completely consumed or an error occurs.
*
* @warning The input buffer, avpkt->data must be FF_INPUT_BUFFER_PADDING_SIZE
* larger than the actual read bytes because some optimized bitstream
* readers read 32 or 64 bits at once and could read over the end.
*
* @note You might have to align the input buffer. The alignment requirements
* depend on the CPU and the decoder.
*
* @param avctx the codec context
* @param[out] frame The AVFrame in which to store decoded audio samples.
* Decoders request a buffer of a particular size by setting
* AVFrame.nb_samples prior to calling get_buffer(). The
* decoder may, however, only utilize part of the buffer by
* setting AVFrame.nb_samples to a smaller value in the
* output frame.
* @param[out] got_frame_ptr Zero if no frame could be decoded, otherwise it is
* non-zero.
* @param[in] avpkt The input AVPacket containing the input buffer.
* At least avpkt->data and avpkt->size should be set. Some
* decoders might also require additional fields to be set.
* @return A negative error code is returned if an error occurred during
* decoding, otherwise the number of bytes consumed from the input
* AVPacket is returned.
*/
int avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame,
int *got_frame_ptr, const AVPacket *avpkt);
/**
* Decode the video frame of size avpkt->size from avpkt->data into picture.
* Some decoders may support multiple frames in a single AVPacket, such
* decoders would then just decode the first frame.
*
* @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than
* the actual read bytes because some optimized bitstream readers read 32 or 64
* bits at once and could read over the end.
*
* @warning The end of the input buffer buf should be set to 0 to ensure that
* no overreading happens for damaged MPEG streams.
*
* @note You might have to align the input buffer avpkt->data.
* The alignment requirements depend on the CPU: on some CPUs it isn't
* necessary at all, on others it won't work at all if not aligned and on others
* it will work but it will have an impact on performance.
*
* In practice, avpkt->data should have 4 byte alignment at minimum.
*
* @note Codecs which have the CODEC_CAP_DELAY capability set have a delay
* between input and output, these need to be fed with avpkt->data=NULL,
* avpkt->size=0 at the end to return the remaining frames.
*
* @param avctx the codec context
* @param[out] picture The AVFrame in which the decoded video frame will be stored.
* Use avcodec_alloc_frame to get an AVFrame, the codec will
* allocate memory for the actual bitmap.
* with default get/release_buffer(), the decoder frees/reuses the bitmap as it sees fit.
* with overridden get/release_buffer() (needs CODEC_CAP_DR1) the user decides into what buffer the decoder
* decodes and the decoder tells the user once it does not need the data anymore,
* the user app can at this point free/reuse/keep the memory as it sees fit.
*
* @param[in] avpkt The input AVpacket containing the input buffer.
* You can create such packet with av_init_packet() and by then setting
* data and size, some decoders might in addition need other fields like
* flags&AV_PKT_FLAG_KEY. All decoders are designed to use the least
* fields possible.
* @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
* @return On error a negative value is returned, otherwise the number of bytes
* used or zero if no frame could be decompressed.
*/
int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
int *got_picture_ptr,
const AVPacket *avpkt);
/**
* Decode a subtitle message.
* Return a negative value on error, otherwise return the number of bytes used.
* If no subtitle could be decompressed, got_sub_ptr is zero.
* Otherwise, the subtitle is stored in *sub.
* Note that CODEC_CAP_DR1 is not available for subtitle codecs. This is for
* simplicity, because the performance difference is expect to be negligible
* and reusing a get_buffer written for video codecs would probably perform badly
* due to a potentially very different allocation pattern.
*
* @param avctx the codec context
* @param[out] sub The AVSubtitle in which the decoded subtitle will be stored, must be
freed with avsubtitle_free if *got_sub_ptr is set.
* @param[in,out] got_sub_ptr Zero if no subtitle could be decompressed, otherwise, it is nonzero.
* @param[in] avpkt The input AVPacket containing the input buffer.
*/
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
int *got_sub_ptr,
AVPacket *avpkt);
/**
* @defgroup lavc_parsing Frame parsing
* @{
*/
typedef struct AVCodecParserContext {
void *priv_data;
struct AVCodecParser *parser;
int64_t frame_offset; /* offset of the current frame */
int64_t cur_offset; /* current offset
(incremented by each av_parser_parse()) */
int64_t next_frame_offset; /* offset of the next frame */
/* video info */
int pict_type; /* XXX: Put it back in AVCodecContext. */
/**
* This field is used for proper frame duration computation in lavf.
* It signals, how much longer the frame duration of the current frame
* is compared to normal frame duration.
*
* frame_duration = (1 + repeat_pict) * time_base
*
* It is used by codecs like H.264 to display telecined material.
*/
int repeat_pict; /* XXX: Put it back in AVCodecContext. */
int64_t pts; /* pts of the current frame */
int64_t dts; /* dts of the current frame */
/* private data */
int64_t last_pts;
int64_t last_dts;
int fetch_timestamp;
#define AV_PARSER_PTS_NB 4
int cur_frame_start_index;
int64_t cur_frame_offset[AV_PARSER_PTS_NB];
int64_t cur_frame_pts[AV_PARSER_PTS_NB];
int64_t cur_frame_dts[AV_PARSER_PTS_NB];
int flags;
#define PARSER_FLAG_COMPLETE_FRAMES 0x0001
#define PARSER_FLAG_ONCE 0x0002
/// Set if the parser has a valid file offset
#define PARSER_FLAG_FETCHED_OFFSET 0x0004
#define PARSER_FLAG_USE_CODEC_TS 0x1000
int64_t offset; ///< byte offset from starting packet start
int64_t cur_frame_end[AV_PARSER_PTS_NB];
/**
* Set by parser to 1 for key frames and 0 for non-key frames.
* It is initialized to -1, so if the parser doesn't set this flag,
* old-style fallback using AV_PICTURE_TYPE_I picture type as key frames
* will be used.
*/
int key_frame;
/**
* Time difference in stream time base units from the pts of this
* packet to the point at which the output from the decoder has converged
* independent from the availability of previous frames. That is, the
* frames are virtually identical no matter if decoding started from
* the very first frame or from this keyframe.
* Is AV_NOPTS_VALUE if unknown.
* This field is not the display duration of the current frame.
* This field has no meaning if the packet does not have AV_PKT_FLAG_KEY
* set.
*
* The purpose of this field is to allow seeking in streams that have no
* keyframes in the conventional sense. It corresponds to the
* recovery point SEI in H.264 and match_time_delta in NUT. It is also
* essential for some types of subtitle streams to ensure that all
* subtitles are correctly displayed after seeking.
*/
int64_t convergence_duration;
// Timestamp generation support:
/**
* Synchronization point for start of timestamp generation.
*
* Set to >0 for sync point, 0 for no sync point and <0 for undefined
* (default).
*
* For example, this corresponds to presence of H.264 buffering period
* SEI message.
*/
int dts_sync_point;
/**
* Offset of the current timestamp against last timestamp sync point in
* units of AVCodecContext.time_base.
*
* Set to INT_MIN when dts_sync_point unused. Otherwise, it must
* contain a valid timestamp offset.
*
* Note that the timestamp of sync point has usually a nonzero
* dts_ref_dts_delta, which refers to the previous sync point. Offset of
* the next frame after timestamp sync point will be usually 1.
*
* For example, this corresponds to H.264 cpb_removal_delay.
*/
int dts_ref_dts_delta;
/**
* Presentation delay of current frame in units of AVCodecContext.time_base.
*
* Set to INT_MIN when dts_sync_point unused. Otherwise, it must
* contain valid non-negative timestamp delta (presentation time of a frame
* must not lie in the past).
*
* This delay represents the difference between decoding and presentation
* time of the frame.
*
* For example, this corresponds to H.264 dpb_output_delay.
*/
int pts_dts_delta;
/**
* Position of the packet in file.
*
* Analogous to cur_frame_pts/dts
*/
int64_t cur_frame_pos[AV_PARSER_PTS_NB];
/**
* Byte position of currently parsed frame in stream.
*/
int64_t pos;
/**
* Previous frame byte position.
*/
int64_t last_pos;
/**
* Duration of the current frame.
* For audio, this is in units of 1 / AVCodecContext.sample_rate.
* For all other types, this is in units of AVCodecContext.time_base.
*/
int duration;
} AVCodecParserContext;
typedef struct AVCodecParser {
int codec_ids[5]; /* several codec IDs are permitted */
int priv_data_size;
int (*parser_init)(AVCodecParserContext *s);
int (*parser_parse)(AVCodecParserContext *s,
AVCodecContext *avctx,
const uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size);
void (*parser_close)(AVCodecParserContext *s);
int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
struct AVCodecParser *next;
} AVCodecParser;
AVCodecParser *av_parser_next(AVCodecParser *c);
void av_register_codec_parser(AVCodecParser *parser);
AVCodecParserContext *av_parser_init(int codec_id);
/**
* Parse a packet.
*
* @param s parser context.
* @param avctx codec context.
* @param poutbuf set to pointer to parsed buffer or NULL if not yet finished.
* @param poutbuf_size set to size of parsed buffer or zero if not yet finished.
* @param buf input buffer.
* @param buf_size input length, to signal EOF, this should be 0 (so that the last frame can be output).
* @param pts input presentation timestamp.
* @param dts input decoding timestamp.
* @param pos input byte position in stream.
* @return the number of bytes of the input bitstream used.
*
* Example:
* @code
* while(in_len){
* len = av_parser_parse2(myparser, AVCodecContext, &data, &size,
* in_data, in_len,
* pts, dts, pos);
* in_data += len;
* in_len -= len;
*
* if(size)
* decode_frame(data, size);
* }
* @endcode
*/
int av_parser_parse2(AVCodecParserContext *s,
AVCodecContext *avctx,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size,
int64_t pts, int64_t dts,
int64_t pos);
int av_parser_change(AVCodecParserContext *s,
AVCodecContext *avctx,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe);
void av_parser_close(AVCodecParserContext *s);
/**
* @}
* @}
*/
/**
* @addtogroup lavc_encoding
* @{
*/
/**
* Find a registered encoder with a matching codec ID.
*
* @param id AVCodecID of the requested encoder
* @return An encoder if one was found, NULL otherwise.
*/
AVCodec *avcodec_find_encoder(enum AVCodecID id);
/**
* Find a registered encoder with the specified name.
*
* @param name name of the requested encoder
* @return An encoder if one was found, NULL otherwise.
*/
AVCodec *avcodec_find_encoder_by_name(const char *name);
#if FF_API_OLD_ENCODE_AUDIO
/**
* Encode an audio frame from samples into buf.
*
* @deprecated Use avcodec_encode_audio2 instead.
*
* @note The output buffer should be at least FF_MIN_BUFFER_SIZE bytes large.
* However, for codecs with avctx->frame_size equal to 0 (e.g. PCM) the user
* will know how much space is needed because it depends on the value passed
* in buf_size as described below. In that case a lower value can be used.
*
* @param avctx the codec context
* @param[out] buf the output buffer
* @param[in] buf_size the output buffer size
* @param[in] samples the input buffer containing the samples
* The number of samples read from this buffer is frame_size*channels,
* both of which are defined in avctx.
* For codecs which have avctx->frame_size equal to 0 (e.g. PCM) the number of
* samples read from samples is equal to:
* buf_size * 8 / (avctx->channels * av_get_bits_per_sample(avctx->codec_id))
* This also implies that av_get_bits_per_sample() must not return 0 for these
* codecs.
* @return On error a negative value is returned, on success zero or the number
* of bytes used to encode the data read from the input buffer.
*/
int attribute_deprecated avcodec_encode_audio(AVCodecContext *avctx,
uint8_t *buf, int buf_size,
const short *samples);
#endif
/**
* Encode a frame of audio.
*
* Takes input samples from frame and writes the next output packet, if
* available, to avpkt. The output packet does not necessarily contain data for
* the most recent frame, as encoders can delay, split, and combine input frames
* internally as needed.
*
* @param avctx codec context
* @param avpkt output AVPacket.
* The user can supply an output buffer by setting
* avpkt->data and avpkt->size prior to calling the
* function, but if the size of the user-provided data is not
* large enough, encoding will fail. If avpkt->data and
* avpkt->size are set, avpkt->destruct must also be set. All
* other AVPacket fields will be reset by the encoder using
* av_init_packet(). If avpkt->data is NULL, the encoder will
* allocate it. The encoder will set avpkt->size to the size
* of the output packet.
*
* If this function fails or produces no output, avpkt will be
* freed using av_free_packet() (i.e. avpkt->destruct will be
* called to free the user supplied buffer).
* @param[in] frame AVFrame containing the raw audio data to be encoded.
* May be NULL when flushing an encoder that has the
* CODEC_CAP_DELAY capability set.
* If CODEC_CAP_VARIABLE_FRAME_SIZE is set, then each frame
* can have any number of samples.
* If it is not set, frame->nb_samples must be equal to
* avctx->frame_size for all frames except the last.
* The final frame may be smaller than avctx->frame_size.
* @param[out] got_packet_ptr This field is set to 1 by libavcodec if the
* output packet is non-empty, and to 0 if it is
* empty. If the function returns an error, the
* packet can be assumed to be invalid, and the
* value of got_packet_ptr is undefined and should
* not be used.
* @return 0 on success, negative error code on failure
*/
int avcodec_encode_audio2(AVCodecContext *avctx, AVPacket *avpkt,
const AVFrame *frame, int *got_packet_ptr);
#if FF_API_OLD_ENCODE_VIDEO
/**
* @deprecated use avcodec_encode_video2() instead.
*
* Encode a video frame from pict into buf.
* The input picture should be
* stored using a specific format, namely avctx.pix_fmt.
*
* @param avctx the codec context
* @param[out] buf the output buffer for the bitstream of encoded frame
* @param[in] buf_size the size of the output buffer in bytes
* @param[in] pict the input picture to encode
* @return On error a negative value is returned, on success zero or the number
* of bytes used from the output buffer.
*/
attribute_deprecated
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
const AVFrame *pict);
#endif
/**
* Encode a frame of video.
*
* Takes input raw video data from frame and writes the next output packet, if
* available, to avpkt. The output packet does not necessarily contain data for
* the most recent frame, as encoders can delay and reorder input frames
* internally as needed.
*
* @param avctx codec context
* @param avpkt output AVPacket.
* The user can supply an output buffer by setting
* avpkt->data and avpkt->size prior to calling the
* function, but if the size of the user-provided data is not
* large enough, encoding will fail. All other AVPacket fields
* will be reset by the encoder using av_init_packet(). If
* avpkt->data is NULL, the encoder will allocate it.
* The encoder will set avpkt->size to the size of the
* output packet. The returned data (if any) belongs to the
* caller, he is responsible for freeing it.
*
* If this function fails or produces no output, avpkt will be
* freed using av_free_packet() (i.e. avpkt->destruct will be
* called to free the user supplied buffer).
* @param[in] frame AVFrame containing the raw video data to be encoded.
* May be NULL when flushing an encoder that has the
* CODEC_CAP_DELAY capability set.
* @param[out] got_packet_ptr This field is set to 1 by libavcodec if the
* output packet is non-empty, and to 0 if it is
* empty. If the function returns an error, the
* packet can be assumed to be invalid, and the
* value of got_packet_ptr is undefined and should
* not be used.
* @return 0 on success, negative error code on failure
*/
int avcodec_encode_video2(AVCodecContext *avctx, AVPacket *avpkt,
const AVFrame *frame, int *got_packet_ptr);
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
const AVSubtitle *sub);
/**
* @}
*/
/**
* @defgroup lavc_resample Audio resampling
* @ingroup libavc
*
* @{
*/
struct ReSampleContext;
struct AVResampleContext;
typedef struct ReSampleContext ReSampleContext;
/**
* Initialize audio resampling context.
*
* @param output_channels number of output channels
* @param input_channels number of input channels
* @param output_rate output sample rate
* @param input_rate input sample rate
* @param sample_fmt_out requested output sample format
* @param sample_fmt_in input sample format
* @param filter_length length of each FIR filter in the filterbank relative to the cutoff frequency
* @param log2_phase_count log2 of the number of entries in the polyphase filterbank
* @param linear if 1 then the used FIR filter will be linearly interpolated
between the 2 closest, if 0 the closest will be used
* @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate
* @return allocated ReSampleContext, NULL if error occurred
*/
ReSampleContext *av_audio_resample_init(int output_channels, int input_channels,
int output_rate, int input_rate,
enum AVSampleFormat sample_fmt_out,
enum AVSampleFormat sample_fmt_in,
int filter_length, int log2_phase_count,
int linear, double cutoff);
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
/**
* Free resample context.
*
* @param s a non-NULL pointer to a resample context previously
* created with av_audio_resample_init()
*/
void audio_resample_close(ReSampleContext *s);
/**
* Initialize an audio resampler.
* Note, if either rate is not an integer then simply scale both rates up so they are.
* @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq
* @param log2_phase_count log2 of the number of entries in the polyphase filterbank
* @param linear If 1 then the used FIR filter will be linearly interpolated
between the 2 closest, if 0 the closest will be used
* @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate
*/
struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
/**
* Resample an array of samples using a previously configured context.
* @param src an array of unconsumed samples
* @param consumed the number of samples of src which have been consumed are returned here
* @param src_size the number of unconsumed samples available
* @param dst_size the amount of space in samples available in dst
* @param update_ctx If this is 0 then the context will not be modified, that way several channels can be resampled with the same context.
* @return the number of samples written in dst or -1 if an error occurred
*/
int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
/**
* Compensate samplerate/timestamp drift. The compensation is done by changing
* the resampler parameters, so no audible clicks or similar distortions occur
* @param compensation_distance distance in output samples over which the compensation should be performed
* @param sample_delta number of output samples which should be output less
*
* example: av_resample_compensate(c, 10, 500)
* here instead of 510 samples only 500 samples would be output
*
* note, due to rounding the actual compensation might be slightly different,
* especially if the compensation_distance is large and the in_rate used during init is small
*/
void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
void av_resample_close(struct AVResampleContext *c);
/**
* @}
*/
/**
* @addtogroup lavc_picture
* @{
*/
/**
* Allocate memory for a picture. Call avpicture_free() to free it.
*
* @see avpicture_fill()
*
* @param picture the picture to be filled in
* @param pix_fmt the format of the picture
* @param width the width of the picture
* @param height the height of the picture
* @return zero if successful, a negative value if not
*/
int avpicture_alloc(AVPicture *picture, enum PixelFormat pix_fmt, int width, int height);
/**
* Free a picture previously allocated by avpicture_alloc().
* The data buffer used by the AVPicture is freed, but the AVPicture structure
* itself is not.
*
* @param picture the AVPicture to be freed
*/
void avpicture_free(AVPicture *picture);
/**
* Fill in the AVPicture fields, always assume a linesize alignment of
* 1.
*
* @see av_image_fill_arrays()
*/
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
enum PixelFormat pix_fmt, int width, int height);
/**
* Copy pixel data from an AVPicture into a buffer, always assume a
* linesize alignment of 1.
*
* @see av_image_copy_to_buffer()
*/
int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
unsigned char *dest, int dest_size);
/**
* Calculate the size in bytes that a picture of the given width and height
* would occupy if stored in the given picture format.
* Always assume a linesize alignment of 1.
*
* @see av_image_get_buffer_size().
*/
int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height);
/**
* deinterlace - if not supported return -1
*/
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
enum PixelFormat pix_fmt, int width, int height);
/**
* Copy image src to dst. Wraps av_image_copy().
*/
void av_picture_copy(AVPicture *dst, const AVPicture *src,
enum PixelFormat pix_fmt, int width, int height);
/**
* Crop image top and left side.
*/
int av_picture_crop(AVPicture *dst, const AVPicture *src,
enum PixelFormat pix_fmt, int top_band, int left_band);
/**
* Pad image.
*/
int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, enum PixelFormat pix_fmt,
int padtop, int padbottom, int padleft, int padright, int *color);
/**
* @}
*/
/**
* @defgroup lavc_misc Utility functions
* @ingroup libavc
*
* Miscellaneous utility functions related to both encoding and decoding
* (or neither).
* @{
*/
/**
* @defgroup lavc_misc_pixfmt Pixel formats
*
* Functions for working with pixel formats.
* @{
*/
void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift);
/**
* Return a value representing the fourCC code associated to the
* pixel format pix_fmt, or 0 if no associated fourCC code can be
* found.
*/
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat pix_fmt);
#define FF_LOSS_RESOLUTION 0x0001 /**< loss due to resolution change */
#define FF_LOSS_DEPTH 0x0002 /**< loss due to color depth change */
#define FF_LOSS_COLORSPACE 0x0004 /**< loss due to color space conversion */
#define FF_LOSS_ALPHA 0x0008 /**< loss of alpha bits */
#define FF_LOSS_COLORQUANT 0x0010 /**< loss due to color quantization */
#define FF_LOSS_CHROMA 0x0020 /**< loss of chroma (e.g. RGB to gray conversion) */
/**
* Compute what kind of losses will occur when converting from one specific
* pixel format to another.
* When converting from one pixel format to another, information loss may occur.
* For example, when converting from RGB24 to GRAY, the color information will
* be lost. Similarly, other losses occur when converting from some formats to
* other formats. These losses can involve loss of chroma, but also loss of
* resolution, loss of color depth, loss due to the color space conversion, loss
* of the alpha bits or loss due to color quantization.
* avcodec_get_fix_fmt_loss() informs you about the various types of losses
* which will occur when converting from one pixel format to another.
*
* @param[in] dst_pix_fmt destination pixel format
* @param[in] src_pix_fmt source pixel format
* @param[in] has_alpha Whether the source pixel format alpha channel is used.
* @return Combination of flags informing you what kind of losses will occur
* (maximum loss for an invalid dst_pix_fmt).
*/
int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
int has_alpha);
#if FF_API_FIND_BEST_PIX_FMT
/**
* @deprecated use avcodec_find_best_pix_fmt_of_2() instead.
*
* Find the best pixel format to convert to given a certain source pixel
* format. When converting from one pixel format to another, information loss
* may occur. For example, when converting from RGB24 to GRAY, the color
* information will be lost. Similarly, other losses occur when converting from
* some formats to other formats. avcodec_find_best_pix_fmt() searches which of
* the given pixel formats should be used to suffer the least amount of loss.
* The pixel formats from which it chooses one, are determined by the
* pix_fmt_mask parameter.
*
* Note, only the first 64 pixel formats will fit in pix_fmt_mask.
*
* @code
* src_pix_fmt = PIX_FMT_YUV420P;
* pix_fmt_mask = (1 << PIX_FMT_YUV422P) | (1 << PIX_FMT_RGB24);
* dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss);
* @endcode
*
* @param[in] pix_fmt_mask bitmask determining which pixel format to choose from
* @param[in] src_pix_fmt source pixel format
* @param[in] has_alpha Whether the source pixel format alpha channel is used.
* @param[out] loss_ptr Combination of flags informing you what kind of losses will occur.
* @return The best pixel format to convert to or -1 if none was found.
*/
attribute_deprecated
enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
int has_alpha, int *loss_ptr);
#endif /* FF_API_FIND_BEST_PIX_FMT */
/**
* Find the best pixel format to convert to given a certain source pixel
* format. When converting from one pixel format to another, information loss
* may occur. For example, when converting from RGB24 to GRAY, the color
* information will be lost. Similarly, other losses occur when converting from
* some formats to other formats. avcodec_find_best_pix_fmt_of_2() searches which of
* the given pixel formats should be used to suffer the least amount of loss.
* The pixel formats from which it chooses one, are determined by the
* pix_fmt_list parameter.
*
*
* @param[in] pix_fmt_list PIX_FMT_NONE terminated array of pixel formats to choose from
* @param[in] src_pix_fmt source pixel format
* @param[in] has_alpha Whether the source pixel format alpha channel is used.
* @param[out] loss_ptr Combination of flags informing you what kind of losses will occur.
* @return The best pixel format to convert to or -1 if none was found.
*/
enum PixelFormat avcodec_find_best_pix_fmt_of_list(enum PixelFormat *pix_fmt_list,
enum PixelFormat src_pix_fmt,
int has_alpha, int *loss_ptr);
/**
* Find the best pixel format to convert to given a certain source pixel
* format and a selection of two destination pixel formats. When converting from
* one pixel format to another, information loss may occur. For example, when converting
* from RGB24 to GRAY, the color information will be lost. Similarly, other losses occur when
* converting from some formats to other formats. avcodec_find_best_pix_fmt_of_2() selects which of
* the given pixel formats should be used to suffer the least amount of loss.
*
* If one of the destination formats is PIX_FMT_NONE the other pixel format (if valid) will be
* returned.
*
* @code
* src_pix_fmt = PIX_FMT_YUV420P;
* dst_pix_fmt1= PIX_FMT_RGB24;
* dst_pix_fmt2= PIX_FMT_GRAY8;
* dst_pix_fmt3= PIX_FMT_RGB8;
* loss= FF_LOSS_CHROMA; // don't care about chroma loss, so chroma loss will be ignored.
* dst_pix_fmt = avcodec_find_best_pix_fmt_of_2(dst_pix_fmt1, dst_pix_fmt2, src_pix_fmt, alpha, &loss);
* dst_pix_fmt = avcodec_find_best_pix_fmt_of_2(dst_pix_fmt, dst_pix_fmt3, src_pix_fmt, alpha, &loss);
* @endcode
*
* @param[in] dst_pix_fmt1 One of the two destination pixel formats to choose from
* @param[in] dst_pix_fmt2 The other of the two destination pixel formats to choose from
* @param[in] src_pix_fmt Source pixel format
* @param[in] has_alpha Whether the source pixel format alpha channel is used.
* @param[in, out] loss_ptr Combination of loss flags. In: selects which of the losses to ignore, i.e.
* NULL or value of zero means we care about all losses. Out: the loss
* that occurs when converting from src to selected dst pixel format.
* @return The best pixel format to convert to or -1 if none was found.
*/
enum PixelFormat avcodec_find_best_pix_fmt_of_2(enum PixelFormat dst_pix_fmt1, enum PixelFormat dst_pix_fmt2,
enum PixelFormat src_pix_fmt, int has_alpha, int *loss_ptr);
attribute_deprecated
#if AV_HAVE_INCOMPATIBLE_FORK_ABI
enum PixelFormat avcodec_find_best_pix_fmt2(enum PixelFormat *pix_fmt_list,
enum PixelFormat src_pix_fmt,
int has_alpha, int *loss_ptr);
#else
enum PixelFormat avcodec_find_best_pix_fmt2(enum PixelFormat dst_pix_fmt1, enum PixelFormat dst_pix_fmt2,
enum PixelFormat src_pix_fmt, int has_alpha, int *loss_ptr);
#endif
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
/**
* @}
*/
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
/**
* Put a string representing the codec tag codec_tag in buf.
*
* @param buf_size size in bytes of buf
* @return the length of the string that would have been generated if
* enough space had been available, excluding the trailing null
*/
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag);
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
/**
* Return a name for the specified profile, if available.
*
* @param codec the codec that is searched for the given profile
* @param profile the profile value for which a name is requested
* @return A name for the profile if found, NULL otherwise.
*/
const char *av_get_profile_name(const AVCodec *codec, int profile);
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size);
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int, int),void *arg, int *ret, int count);
//FIXME func typedef
/**
* Fill audio frame data and linesize.
* AVFrame extended_data channel pointers are allocated if necessary for
* planar audio.
*
* @param frame the AVFrame
* frame->nb_samples must be set prior to calling the
* function. This function fills in frame->data,
* frame->extended_data, frame->linesize[0].
* @param nb_channels channel count
* @param sample_fmt sample format
* @param buf buffer to use for frame data
* @param buf_size size of buffer
* @param align plane size sample alignment (0 = default)
* @return 0 on success, negative error code on failure
*/
int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
enum AVSampleFormat sample_fmt, const uint8_t *buf,
int buf_size, int align);
/**
* Flush buffers, should be called when seeking or when switching to a different stream.
*/
void avcodec_flush_buffers(AVCodecContext *avctx);
void avcodec_default_free_buffers(AVCodecContext *s);
/**
* Return codec bits per sample.
*
* @param[in] codec_id the codec
* @return Number of bits per sample or zero if unknown for the given codec.
*/
int av_get_bits_per_sample(enum AVCodecID codec_id);
/**
* Return the PCM codec associated with a sample format.
* @param be endianness, 0 for little, 1 for big,
* -1 (or anything else) for native
* @return AV_CODEC_ID_PCM_* or AV_CODEC_ID_NONE
*/
enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be);
/**
* Return codec bits per sample.
* Only return non-zero if the bits per sample is exactly correct, not an
* approximation.
*
* @param[in] codec_id the codec
* @return Number of bits per sample or zero if unknown for the given codec.
*/
int av_get_exact_bits_per_sample(enum AVCodecID codec_id);
/**
* Return audio frame duration.
*
* @param avctx codec context
* @param frame_bytes size of the frame, or 0 if unknown
* @return frame duration, in samples, if known. 0 if not able to
* determine.
*/
int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes);
typedef struct AVBitStreamFilterContext {
void *priv_data;
struct AVBitStreamFilter *filter;
AVCodecParserContext *parser;
struct AVBitStreamFilterContext *next;
} AVBitStreamFilterContext;
typedef struct AVBitStreamFilter {
const char *name;
int priv_data_size;
int (*filter)(AVBitStreamFilterContext *bsfc,
AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe);
void (*close)(AVBitStreamFilterContext *bsfc);
struct AVBitStreamFilter *next;
} AVBitStreamFilter;
void av_register_bitstream_filter(AVBitStreamFilter *bsf);
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe);
void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f);
/* memory */
/**
* Reallocate the given block if it is not large enough, otherwise do nothing.
*
* @see av_realloc
*/
void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size);
/**
* Allocate a buffer, reusing the given one if large enough.
*
* Contrary to av_fast_realloc the current buffer contents might not be
* preserved and on error the old buffer is freed, thus no special
* handling to avoid memleaks is necessary.
*
* @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer
* @param size size of the buffer *ptr points to
* @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and
* *size 0 if an error occurred.
*/
void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size);
/**
* Same behaviour av_fast_malloc but the buffer has additional
* FF_INPUT_PADDING_SIZE at the end which will will always be 0.
*
* In addition the whole buffer will initially and after resizes
* be 0-initialized so that no uninitialized data will ever appear.
*/
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size);
/**
* Same behaviour av_fast_padded_malloc except that buffer will always
* be 0-initialized after call.
*/
void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size);
/**
* Encode extradata length to a buffer. Used by xiph codecs.
*
* @param s buffer to write to; must be at least (v/255+1) bytes long
* @param v size of extradata in bytes
* @return number of bytes written to the buffer.
*/
unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
/**
* Log a generic warning message about a missing feature. This function is
* intended to be used internally by FFmpeg (libavcodec, libavformat, etc.)
* only, and would normally not be used by applications.
* @param[in] avc a pointer to an arbitrary struct of which the first field is
* a pointer to an AVClass struct
* @param[in] feature string containing the name of the missing feature
* @param[in] want_sample indicates if samples are wanted which exhibit this feature.
* If want_sample is non-zero, additional verbage will be added to the log
* message which tells the user how to report samples to the development
* mailing list.
*/
void av_log_missing_feature(void *avc, const char *feature, int want_sample);
/**
* Log a generic warning message asking for a sample. This function is
* intended to be used internally by FFmpeg (libavcodec, libavformat, etc.)
* only, and would normally not be used by applications.
* @param[in] avc a pointer to an arbitrary struct of which the first field is
* a pointer to an AVClass struct
* @param[in] msg string containing an optional message, or NULL if no message
*/
void av_log_ask_for_sample(void *avc, const char *msg, ...) av_printf_format(2, 3);
/**
* Register the hardware accelerator hwaccel.
*/
void av_register_hwaccel(AVHWAccel *hwaccel);
/**
* If hwaccel is NULL, returns the first registered hardware accelerator,
* if hwaccel is non-NULL, returns the next registered hardware accelerator
* after hwaccel, or NULL if hwaccel is the last one.
*/
AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel);
/**
* Lock operation used by lockmgr
*/
enum AVLockOp {
AV_LOCK_CREATE, ///< Create a mutex
AV_LOCK_OBTAIN, ///< Lock the mutex
AV_LOCK_RELEASE, ///< Unlock the mutex
AV_LOCK_DESTROY, ///< Free mutex resources
};
/**
* Register a user provided lock manager supporting the operations
* specified by AVLockOp. mutex points to a (void *) where the
* lockmgr should store/get a pointer to a user allocated mutex. It's
* NULL upon AV_LOCK_CREATE and != NULL for all other ops.
*
* @param cb User defined callback. Note: FFmpeg may invoke calls to this
* callback during the call to av_lockmgr_register().
* Thus, the application must be prepared to handle that.
* If cb is set to NULL the lockmgr will be unregistered.
* Also note that during unregistration the previously registered
* lockmgr callback may also be invoked.
*/
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op));
/**
* Get the type of the given codec.
*/
enum AVMediaType avcodec_get_type(enum AVCodecID codec_id);
/**
* Get the name of a codec.
* @return a static string identifying the codec; never NULL
*/
const char *avcodec_get_name(enum AVCodecID id);
/**
* @return a positive value if s is open (i.e. avcodec_open2() was called on it
* with no corresponding avcodec_close()), 0 otherwise.
*/
int avcodec_is_open(AVCodecContext *s);
/**
* @return a non-zero number if codec is an encoder, zero otherwise
*/
int av_codec_is_encoder(const AVCodec *codec);
/**
* @return a non-zero number if codec is a decoder, zero otherwise
*/
int av_codec_is_decoder(const AVCodec *codec);
/**
* @return descriptor for given codec ID or NULL if no descriptor exists.
*/
const AVCodecDescriptor *avcodec_descriptor_get(enum AVCodecID id);
/**
* Iterate over all codec descriptors known to libavcodec.
*
* @param prev previous descriptor. NULL to get the first descriptor.
*
* @return next descriptor or NULL after the last descriptor
*/
const AVCodecDescriptor *avcodec_descriptor_next(const AVCodecDescriptor *prev);
/**
* @return codec descriptor with the given name or NULL if no such descriptor
* exists.
*/
const AVCodecDescriptor *avcodec_descriptor_get_by_name(const char *name);
/**
* @}
*/
#endif /* AVCODEC_AVCODEC_H */
| 164,452 | 32.589257 | 155 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavcodec/xvmc.h
|
/*
* Copyright (C) 2003 Ivan Kalvachev
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_XVMC_H
#define AVCODEC_XVMC_H
/**
* @file
* @ingroup lavc_codec_hwaccel_xvmc
* Public libavcodec XvMC header.
*/
#include <X11/extensions/XvMC.h>
#include "avcodec.h"
/**
* @defgroup lavc_codec_hwaccel_xvmc XvMC
* @ingroup lavc_codec_hwaccel
*
* @{
*/
#define AV_XVMC_ID 0x1DC711C0 /**< special value to ensure that regular pixel routines haven't corrupted the struct
the number is 1337 speak for the letters IDCT MCo (motion compensation) */
struct xvmc_pix_fmt {
/** The field contains the special constant value AV_XVMC_ID.
It is used as a test that the application correctly uses the API,
and that there is no corruption caused by pixel routines.
- application - set during initialization
- libavcodec - unchanged
*/
int xvmc_id;
/** Pointer to the block array allocated by XvMCCreateBlocks().
The array has to be freed by XvMCDestroyBlocks().
Each group of 64 values represents one data block of differential
pixel information (in MoCo mode) or coefficients for IDCT.
- application - set the pointer during initialization
- libavcodec - fills coefficients/pixel data into the array
*/
short* data_blocks;
/** Pointer to the macroblock description array allocated by
XvMCCreateMacroBlocks() and freed by XvMCDestroyMacroBlocks().
- application - set the pointer during initialization
- libavcodec - fills description data into the array
*/
XvMCMacroBlock* mv_blocks;
/** Number of macroblock descriptions that can be stored in the mv_blocks
array.
- application - set during initialization
- libavcodec - unchanged
*/
int allocated_mv_blocks;
/** Number of blocks that can be stored at once in the data_blocks array.
- application - set during initialization
- libavcodec - unchanged
*/
int allocated_data_blocks;
/** Indicate that the hardware would interpret data_blocks as IDCT
coefficients and perform IDCT on them.
- application - set during initialization
- libavcodec - unchanged
*/
int idct;
/** In MoCo mode it indicates that intra macroblocks are assumed to be in
unsigned format; same as the XVMC_INTRA_UNSIGNED flag.
- application - set during initialization
- libavcodec - unchanged
*/
int unsigned_intra;
/** Pointer to the surface allocated by XvMCCreateSurface().
It has to be freed by XvMCDestroySurface() on application exit.
It identifies the frame and its state on the video hardware.
- application - set during initialization
- libavcodec - unchanged
*/
XvMCSurface* p_surface;
/** Set by the decoder before calling ff_draw_horiz_band(),
needed by the XvMCRenderSurface function. */
//@{
/** Pointer to the surface used as past reference
- application - unchanged
- libavcodec - set
*/
XvMCSurface* p_past_surface;
/** Pointer to the surface used as future reference
- application - unchanged
- libavcodec - set
*/
XvMCSurface* p_future_surface;
/** top/bottom field or frame
- application - unchanged
- libavcodec - set
*/
unsigned int picture_structure;
/** XVMC_SECOND_FIELD - 1st or 2nd field in the sequence
- application - unchanged
- libavcodec - set
*/
unsigned int flags;
//}@
/** Number of macroblock descriptions in the mv_blocks array
that have already been passed to the hardware.
- application - zeroes it on get_buffer().
A successful ff_draw_horiz_band() may increment it
with filled_mb_block_num or zero both.
- libavcodec - unchanged
*/
int start_mv_blocks_num;
/** Number of new macroblock descriptions in the mv_blocks array (after
start_mv_blocks_num) that are filled by libavcodec and have to be
passed to the hardware.
- application - zeroes it on get_buffer() or after successful
ff_draw_horiz_band().
- libavcodec - increment with one of each stored MB
*/
int filled_mv_blocks_num;
/** Number of the next free data block; one data block consists of
64 short values in the data_blocks array.
All blocks before this one have already been claimed by placing their
position into the corresponding block description structure field,
that are part of the mv_blocks array.
- application - zeroes it on get_buffer().
A successful ff_draw_horiz_band() may zero it together
with start_mb_blocks_num.
- libavcodec - each decoded macroblock increases it by the number
of coded blocks it contains.
*/
int next_free_data_block_num;
};
/**
* @}
*/
#endif /* AVCODEC_XVMC_H */
| 5,986 | 34.426036 | 135 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavcodec/old_codec_ids.h
|
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_OLD_CODEC_IDS_H
#define AVCODEC_OLD_CODEC_IDS_H
#include "libavutil/common.h"
/*
* This header exists to prevent new codec IDs from being accidentally added to
* the deprecated list.
* Do not include it directly. It will be removed on next major bump
*
* Do not add new items to this list. Use the AVCodecID enum instead.
*/
CODEC_ID_NONE = AV_CODEC_ID_NONE,
/* video codecs */
CODEC_ID_MPEG1VIDEO,
CODEC_ID_MPEG2VIDEO, ///< preferred ID for MPEG-1/2 video decoding
CODEC_ID_MPEG2VIDEO_XVMC,
CODEC_ID_H261,
CODEC_ID_H263,
CODEC_ID_RV10,
CODEC_ID_RV20,
CODEC_ID_MJPEG,
CODEC_ID_MJPEGB,
CODEC_ID_LJPEG,
CODEC_ID_SP5X,
CODEC_ID_JPEGLS,
CODEC_ID_MPEG4,
CODEC_ID_RAWVIDEO,
CODEC_ID_MSMPEG4V1,
CODEC_ID_MSMPEG4V2,
CODEC_ID_MSMPEG4V3,
CODEC_ID_WMV1,
CODEC_ID_WMV2,
CODEC_ID_H263P,
CODEC_ID_H263I,
CODEC_ID_FLV1,
CODEC_ID_SVQ1,
CODEC_ID_SVQ3,
CODEC_ID_DVVIDEO,
CODEC_ID_HUFFYUV,
CODEC_ID_CYUV,
CODEC_ID_H264,
CODEC_ID_INDEO3,
CODEC_ID_VP3,
CODEC_ID_THEORA,
CODEC_ID_ASV1,
CODEC_ID_ASV2,
CODEC_ID_FFV1,
CODEC_ID_4XM,
CODEC_ID_VCR1,
CODEC_ID_CLJR,
CODEC_ID_MDEC,
CODEC_ID_ROQ,
CODEC_ID_INTERPLAY_VIDEO,
CODEC_ID_XAN_WC3,
CODEC_ID_XAN_WC4,
CODEC_ID_RPZA,
CODEC_ID_CINEPAK,
CODEC_ID_WS_VQA,
CODEC_ID_MSRLE,
CODEC_ID_MSVIDEO1,
CODEC_ID_IDCIN,
CODEC_ID_8BPS,
CODEC_ID_SMC,
CODEC_ID_FLIC,
CODEC_ID_TRUEMOTION1,
CODEC_ID_VMDVIDEO,
CODEC_ID_MSZH,
CODEC_ID_ZLIB,
CODEC_ID_QTRLE,
CODEC_ID_SNOW,
CODEC_ID_TSCC,
CODEC_ID_ULTI,
CODEC_ID_QDRAW,
CODEC_ID_VIXL,
CODEC_ID_QPEG,
CODEC_ID_PNG,
CODEC_ID_PPM,
CODEC_ID_PBM,
CODEC_ID_PGM,
CODEC_ID_PGMYUV,
CODEC_ID_PAM,
CODEC_ID_FFVHUFF,
CODEC_ID_RV30,
CODEC_ID_RV40,
CODEC_ID_VC1,
CODEC_ID_WMV3,
CODEC_ID_LOCO,
CODEC_ID_WNV1,
CODEC_ID_AASC,
CODEC_ID_INDEO2,
CODEC_ID_FRAPS,
CODEC_ID_TRUEMOTION2,
CODEC_ID_BMP,
CODEC_ID_CSCD,
CODEC_ID_MMVIDEO,
CODEC_ID_ZMBV,
CODEC_ID_AVS,
CODEC_ID_SMACKVIDEO,
CODEC_ID_NUV,
CODEC_ID_KMVC,
CODEC_ID_FLASHSV,
CODEC_ID_CAVS,
CODEC_ID_JPEG2000,
CODEC_ID_VMNC,
CODEC_ID_VP5,
CODEC_ID_VP6,
CODEC_ID_VP6F,
CODEC_ID_TARGA,
CODEC_ID_DSICINVIDEO,
CODEC_ID_TIERTEXSEQVIDEO,
CODEC_ID_TIFF,
CODEC_ID_GIF,
CODEC_ID_DXA,
CODEC_ID_DNXHD,
CODEC_ID_THP,
CODEC_ID_SGI,
CODEC_ID_C93,
CODEC_ID_BETHSOFTVID,
CODEC_ID_PTX,
CODEC_ID_TXD,
CODEC_ID_VP6A,
CODEC_ID_AMV,
CODEC_ID_VB,
CODEC_ID_PCX,
CODEC_ID_SUNRAST,
CODEC_ID_INDEO4,
CODEC_ID_INDEO5,
CODEC_ID_MIMIC,
CODEC_ID_RL2,
CODEC_ID_ESCAPE124,
CODEC_ID_DIRAC,
CODEC_ID_BFI,
CODEC_ID_CMV,
CODEC_ID_MOTIONPIXELS,
CODEC_ID_TGV,
CODEC_ID_TGQ,
CODEC_ID_TQI,
CODEC_ID_AURA,
CODEC_ID_AURA2,
CODEC_ID_V210X,
CODEC_ID_TMV,
CODEC_ID_V210,
CODEC_ID_DPX,
CODEC_ID_MAD,
CODEC_ID_FRWU,
CODEC_ID_FLASHSV2,
CODEC_ID_CDGRAPHICS,
CODEC_ID_R210,
CODEC_ID_ANM,
CODEC_ID_BINKVIDEO,
CODEC_ID_IFF_ILBM,
CODEC_ID_IFF_BYTERUN1,
CODEC_ID_KGV1,
CODEC_ID_YOP,
CODEC_ID_VP8,
CODEC_ID_PICTOR,
CODEC_ID_ANSI,
CODEC_ID_A64_MULTI,
CODEC_ID_A64_MULTI5,
CODEC_ID_R10K,
CODEC_ID_MXPEG,
CODEC_ID_LAGARITH,
CODEC_ID_PRORES,
CODEC_ID_JV,
CODEC_ID_DFA,
CODEC_ID_WMV3IMAGE,
CODEC_ID_VC1IMAGE,
CODEC_ID_UTVIDEO,
CODEC_ID_BMV_VIDEO,
CODEC_ID_VBLE,
CODEC_ID_DXTORY,
CODEC_ID_V410,
CODEC_ID_XWD,
CODEC_ID_CDXL,
CODEC_ID_XBM,
CODEC_ID_ZEROCODEC,
CODEC_ID_MSS1,
CODEC_ID_MSA1,
CODEC_ID_TSCC2,
CODEC_ID_MTS2,
CODEC_ID_CLLC,
CODEC_ID_Y41P = MKBETAG('Y','4','1','P'),
CODEC_ID_ESCAPE130 = MKBETAG('E','1','3','0'),
CODEC_ID_EXR = MKBETAG('0','E','X','R'),
CODEC_ID_AVRP = MKBETAG('A','V','R','P'),
CODEC_ID_G2M = MKBETAG( 0 ,'G','2','M'),
CODEC_ID_AVUI = MKBETAG('A','V','U','I'),
CODEC_ID_AYUV = MKBETAG('A','Y','U','V'),
CODEC_ID_V308 = MKBETAG('V','3','0','8'),
CODEC_ID_V408 = MKBETAG('V','4','0','8'),
CODEC_ID_YUV4 = MKBETAG('Y','U','V','4'),
CODEC_ID_SANM = MKBETAG('S','A','N','M'),
CODEC_ID_PAF_VIDEO = MKBETAG('P','A','F','V'),
/* various PCM "codecs" */
CODEC_ID_FIRST_AUDIO = 0x10000, ///< A dummy id pointing at the start of audio codecs
CODEC_ID_PCM_S16LE = 0x10000,
CODEC_ID_PCM_S16BE,
CODEC_ID_PCM_U16LE,
CODEC_ID_PCM_U16BE,
CODEC_ID_PCM_S8,
CODEC_ID_PCM_U8,
CODEC_ID_PCM_MULAW,
CODEC_ID_PCM_ALAW,
CODEC_ID_PCM_S32LE,
CODEC_ID_PCM_S32BE,
CODEC_ID_PCM_U32LE,
CODEC_ID_PCM_U32BE,
CODEC_ID_PCM_S24LE,
CODEC_ID_PCM_S24BE,
CODEC_ID_PCM_U24LE,
CODEC_ID_PCM_U24BE,
CODEC_ID_PCM_S24DAUD,
CODEC_ID_PCM_ZORK,
CODEC_ID_PCM_S16LE_PLANAR,
CODEC_ID_PCM_DVD,
CODEC_ID_PCM_F32BE,
CODEC_ID_PCM_F32LE,
CODEC_ID_PCM_F64BE,
CODEC_ID_PCM_F64LE,
CODEC_ID_PCM_BLURAY,
CODEC_ID_PCM_LXF,
CODEC_ID_S302M,
CODEC_ID_PCM_S8_PLANAR,
/* various ADPCM codecs */
CODEC_ID_ADPCM_IMA_QT = 0x11000,
CODEC_ID_ADPCM_IMA_WAV,
CODEC_ID_ADPCM_IMA_DK3,
CODEC_ID_ADPCM_IMA_DK4,
CODEC_ID_ADPCM_IMA_WS,
CODEC_ID_ADPCM_IMA_SMJPEG,
CODEC_ID_ADPCM_MS,
CODEC_ID_ADPCM_4XM,
CODEC_ID_ADPCM_XA,
CODEC_ID_ADPCM_ADX,
CODEC_ID_ADPCM_EA,
CODEC_ID_ADPCM_G726,
CODEC_ID_ADPCM_CT,
CODEC_ID_ADPCM_SWF,
CODEC_ID_ADPCM_YAMAHA,
CODEC_ID_ADPCM_SBPRO_4,
CODEC_ID_ADPCM_SBPRO_3,
CODEC_ID_ADPCM_SBPRO_2,
CODEC_ID_ADPCM_THP,
CODEC_ID_ADPCM_IMA_AMV,
CODEC_ID_ADPCM_EA_R1,
CODEC_ID_ADPCM_EA_R3,
CODEC_ID_ADPCM_EA_R2,
CODEC_ID_ADPCM_IMA_EA_SEAD,
CODEC_ID_ADPCM_IMA_EA_EACS,
CODEC_ID_ADPCM_EA_XAS,
CODEC_ID_ADPCM_EA_MAXIS_XA,
CODEC_ID_ADPCM_IMA_ISS,
CODEC_ID_ADPCM_G722,
CODEC_ID_ADPCM_IMA_APC,
CODEC_ID_VIMA = MKBETAG('V','I','M','A'),
/* AMR */
CODEC_ID_AMR_NB = 0x12000,
CODEC_ID_AMR_WB,
/* RealAudio codecs*/
CODEC_ID_RA_144 = 0x13000,
CODEC_ID_RA_288,
/* various DPCM codecs */
CODEC_ID_ROQ_DPCM = 0x14000,
CODEC_ID_INTERPLAY_DPCM,
CODEC_ID_XAN_DPCM,
CODEC_ID_SOL_DPCM,
/* audio codecs */
CODEC_ID_MP2 = 0x15000,
CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3
CODEC_ID_AAC,
CODEC_ID_AC3,
CODEC_ID_DTS,
CODEC_ID_VORBIS,
CODEC_ID_DVAUDIO,
CODEC_ID_WMAV1,
CODEC_ID_WMAV2,
CODEC_ID_MACE3,
CODEC_ID_MACE6,
CODEC_ID_VMDAUDIO,
CODEC_ID_FLAC,
CODEC_ID_MP3ADU,
CODEC_ID_MP3ON4,
CODEC_ID_SHORTEN,
CODEC_ID_ALAC,
CODEC_ID_WESTWOOD_SND1,
CODEC_ID_GSM, ///< as in Berlin toast format
CODEC_ID_QDM2,
CODEC_ID_COOK,
CODEC_ID_TRUESPEECH,
CODEC_ID_TTA,
CODEC_ID_SMACKAUDIO,
CODEC_ID_QCELP,
CODEC_ID_WAVPACK,
CODEC_ID_DSICINAUDIO,
CODEC_ID_IMC,
CODEC_ID_MUSEPACK7,
CODEC_ID_MLP,
CODEC_ID_GSM_MS, /* as found in WAV */
CODEC_ID_ATRAC3,
CODEC_ID_VOXWARE,
CODEC_ID_APE,
CODEC_ID_NELLYMOSER,
CODEC_ID_MUSEPACK8,
CODEC_ID_SPEEX,
CODEC_ID_WMAVOICE,
CODEC_ID_WMAPRO,
CODEC_ID_WMALOSSLESS,
CODEC_ID_ATRAC3P,
CODEC_ID_EAC3,
CODEC_ID_SIPR,
CODEC_ID_MP1,
CODEC_ID_TWINVQ,
CODEC_ID_TRUEHD,
CODEC_ID_MP4ALS,
CODEC_ID_ATRAC1,
CODEC_ID_BINKAUDIO_RDFT,
CODEC_ID_BINKAUDIO_DCT,
CODEC_ID_AAC_LATM,
CODEC_ID_QDMC,
CODEC_ID_CELT,
CODEC_ID_G723_1,
CODEC_ID_G729,
CODEC_ID_8SVX_EXP,
CODEC_ID_8SVX_FIB,
CODEC_ID_BMV_AUDIO,
CODEC_ID_RALF,
CODEC_ID_IAC,
CODEC_ID_ILBC,
CODEC_ID_FFWAVESYNTH = MKBETAG('F','F','W','S'),
CODEC_ID_8SVX_RAW = MKBETAG('8','S','V','X'),
CODEC_ID_SONIC = MKBETAG('S','O','N','C'),
CODEC_ID_SONIC_LS = MKBETAG('S','O','N','L'),
CODEC_ID_PAF_AUDIO = MKBETAG('P','A','F','A'),
CODEC_ID_OPUS = MKBETAG('O','P','U','S'),
/* subtitle codecs */
CODEC_ID_FIRST_SUBTITLE = 0x17000, ///< A dummy ID pointing at the start of subtitle codecs.
CODEC_ID_DVD_SUBTITLE = 0x17000,
CODEC_ID_DVB_SUBTITLE,
CODEC_ID_TEXT, ///< raw UTF-8 text
CODEC_ID_XSUB,
CODEC_ID_SSA,
CODEC_ID_MOV_TEXT,
CODEC_ID_HDMV_PGS_SUBTITLE,
CODEC_ID_DVB_TELETEXT,
CODEC_ID_SRT,
CODEC_ID_MICRODVD = MKBETAG('m','D','V','D'),
CODEC_ID_EIA_608 = MKBETAG('c','6','0','8'),
CODEC_ID_JACOSUB = MKBETAG('J','S','U','B'),
CODEC_ID_SAMI = MKBETAG('S','A','M','I'),
CODEC_ID_REALTEXT = MKBETAG('R','T','X','T'),
CODEC_ID_SUBVIEWER = MKBETAG('S','u','b','V'),
/* other specific kind of codecs (generally used for attachments) */
CODEC_ID_FIRST_UNKNOWN = 0x18000, ///< A dummy ID pointing at the start of various fake codecs.
CODEC_ID_TTF = 0x18000,
CODEC_ID_BINTEXT = MKBETAG('B','T','X','T'),
CODEC_ID_XBIN = MKBETAG('X','B','I','N'),
CODEC_ID_IDF = MKBETAG( 0 ,'I','D','F'),
CODEC_ID_PROBE = 0x19000, ///< codec_id is not known (like CODEC_ID_NONE) but lavf should attempt to identify it
CODEC_ID_MPEG2TS = 0x20000, /**< _FAKE_ codec to indicate a raw MPEG-2 TS
* stream (only used by libavformat) */
CODEC_ID_MPEG4SYSTEMS = 0x20001, /**< _FAKE_ codec to indicate a MPEG-4 Systems
* stream (only used by libavformat) */
CODEC_ID_FFMETADATA = 0x21000, ///< Dummy codec for streams containing only metadata information.
#endif /* AVCODEC_OLD_CODEC_IDS_H */
| 10,607 | 25.653266 | 116 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavcodec/avfft.h
|
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_AVFFT_H
#define AVCODEC_AVFFT_H
/**
* @file
* @ingroup lavc_fft
* FFT functions
*/
/**
* @defgroup lavc_fft FFT functions
* @ingroup lavc_misc
*
* @{
*/
typedef float FFTSample;
typedef struct FFTComplex {
FFTSample re, im;
} FFTComplex;
typedef struct FFTContext FFTContext;
/**
* Set up a complex FFT.
* @param nbits log2 of the length of the input array
* @param inverse if 0 perform the forward transform, if 1 perform the inverse
*/
FFTContext *av_fft_init(int nbits, int inverse);
/**
* Do the permutation needed BEFORE calling ff_fft_calc().
*/
void av_fft_permute(FFTContext *s, FFTComplex *z);
/**
* Do a complex FFT with the parameters defined in av_fft_init(). The
* input data must be permuted before. No 1.0/sqrt(n) normalization is done.
*/
void av_fft_calc(FFTContext *s, FFTComplex *z);
void av_fft_end(FFTContext *s);
FFTContext *av_mdct_init(int nbits, int inverse, double scale);
void av_imdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input);
void av_imdct_half(FFTContext *s, FFTSample *output, const FFTSample *input);
void av_mdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input);
void av_mdct_end(FFTContext *s);
/* Real Discrete Fourier Transform */
enum RDFTransformType {
DFT_R2C,
IDFT_C2R,
IDFT_R2C,
DFT_C2R,
};
typedef struct RDFTContext RDFTContext;
/**
* Set up a real FFT.
* @param nbits log2 of the length of the input array
* @param trans the type of transform
*/
RDFTContext *av_rdft_init(int nbits, enum RDFTransformType trans);
void av_rdft_calc(RDFTContext *s, FFTSample *data);
void av_rdft_end(RDFTContext *s);
/* Discrete Cosine Transform */
typedef struct DCTContext DCTContext;
enum DCTTransformType {
DCT_II = 0,
DCT_III,
DCT_I,
DST_I,
};
/**
* Set up DCT.
* @param nbits size of the input array:
* (1 << nbits) for DCT-II, DCT-III and DST-I
* (1 << nbits) + 1 for DCT-I
*
* @note the first element of the input of DST-I is ignored
*/
DCTContext *av_dct_init(int nbits, enum DCTTransformType type);
void av_dct_calc(DCTContext *s, FFTSample *data);
void av_dct_end (DCTContext *s);
/**
* @}
*/
#endif /* AVCODEC_AVFFT_H */
| 3,060 | 25.162393 | 86 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavcodec/vaapi.h
|
/*
* Video Acceleration API (shared data between FFmpeg and the video player)
* HW decode acceleration for MPEG-2, MPEG-4, H.264 and VC-1
*
* Copyright (C) 2008-2009 Splitted-Desktop Systems
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_VAAPI_H
#define AVCODEC_VAAPI_H
/**
* @file
* @ingroup lavc_codec_hwaccel_vaapi
* Public libavcodec VA API header.
*/
#include <stdint.h>
/**
* @defgroup lavc_codec_hwaccel_vaapi VA API Decoding
* @ingroup lavc_codec_hwaccel
* @{
*/
/**
* This structure is used to share data between the FFmpeg library and
* the client video application.
* This shall be zero-allocated and available as
* AVCodecContext.hwaccel_context. All user members can be set once
* during initialization or through each AVCodecContext.get_buffer()
* function call. In any case, they must be valid prior to calling
* decoding functions.
*/
struct vaapi_context {
/**
* Window system dependent data
*
* - encoding: unused
* - decoding: Set by user
*/
void *display;
/**
* Configuration ID
*
* - encoding: unused
* - decoding: Set by user
*/
uint32_t config_id;
/**
* Context ID (video decode pipeline)
*
* - encoding: unused
* - decoding: Set by user
*/
uint32_t context_id;
/**
* VAPictureParameterBuffer ID
*
* - encoding: unused
* - decoding: Set by libavcodec
*/
uint32_t pic_param_buf_id;
/**
* VAIQMatrixBuffer ID
*
* - encoding: unused
* - decoding: Set by libavcodec
*/
uint32_t iq_matrix_buf_id;
/**
* VABitPlaneBuffer ID (for VC-1 decoding)
*
* - encoding: unused
* - decoding: Set by libavcodec
*/
uint32_t bitplane_buf_id;
/**
* Slice parameter/data buffer IDs
*
* - encoding: unused
* - decoding: Set by libavcodec
*/
uint32_t *slice_buf_ids;
/**
* Number of effective slice buffer IDs to send to the HW
*
* - encoding: unused
* - decoding: Set by libavcodec
*/
unsigned int n_slice_buf_ids;
/**
* Size of pre-allocated slice_buf_ids
*
* - encoding: unused
* - decoding: Set by libavcodec
*/
unsigned int slice_buf_ids_alloc;
/**
* Pointer to VASliceParameterBuffers
*
* - encoding: unused
* - decoding: Set by libavcodec
*/
void *slice_params;
/**
* Size of a VASliceParameterBuffer element
*
* - encoding: unused
* - decoding: Set by libavcodec
*/
unsigned int slice_param_size;
/**
* Size of pre-allocated slice_params
*
* - encoding: unused
* - decoding: Set by libavcodec
*/
unsigned int slice_params_alloc;
/**
* Number of slices currently filled in
*
* - encoding: unused
* - decoding: Set by libavcodec
*/
unsigned int slice_count;
/**
* Pointer to slice data buffer base
* - encoding: unused
* - decoding: Set by libavcodec
*/
const uint8_t *slice_data;
/**
* Current size of slice data
*
* - encoding: unused
* - decoding: Set by libavcodec
*/
uint32_t slice_data_size;
};
/* @} */
#endif /* AVCODEC_VAAPI_H */
| 4,007 | 22.034483 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavcodec/version.h
|
/*
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_VERSION_H
#define AVCODEC_VERSION_H
/**
* @file
* @ingroup libavc
* Libavcodec version macros.
*/
#define LIBAVCODEC_VERSION_MAJOR 54
#define LIBAVCODEC_VERSION_MINOR 55
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \
LIBAVCODEC_VERSION_MICRO)
#define LIBAVCODEC_VERSION AV_VERSION(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \
LIBAVCODEC_VERSION_MICRO)
#define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
#define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
/**
* FF_API_* defines may be placed below to indicate public API that will be
* dropped at a future version bump. The defines themselves are not part of
* the public API and may change, break or disappear at any time.
*/
#ifndef FF_API_REQUEST_CHANNELS
#define FF_API_REQUEST_CHANNELS (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_ALLOC_CONTEXT
#define FF_API_ALLOC_CONTEXT (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_AVCODEC_OPEN
#define FF_API_AVCODEC_OPEN (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_OLD_DECODE_AUDIO
#define FF_API_OLD_DECODE_AUDIO (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_OLD_TIMECODE
#define FF_API_OLD_TIMECODE (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_OLD_ENCODE_AUDIO
#define FF_API_OLD_ENCODE_AUDIO (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_OLD_ENCODE_VIDEO
#define FF_API_OLD_ENCODE_VIDEO (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_MPV_GLOBAL_OPTS
#define FF_API_MPV_GLOBAL_OPTS (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_COLOR_TABLE_ID
#define FF_API_COLOR_TABLE_ID (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_INTER_THRESHOLD
#define FF_API_INTER_THRESHOLD (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_SUB_ID
#define FF_API_SUB_ID (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_DSP_MASK
#define FF_API_DSP_MASK (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_FIND_BEST_PIX_FMT
#define FF_API_FIND_BEST_PIX_FMT (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_CODEC_ID
#define FF_API_CODEC_ID (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_VDA_ASYNC
#define FF_API_VDA_ASYNC (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#endif /* AVCODEC_VERSION_H */
| 3,323 | 33.268041 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libavcodec/dxva2.h
|
/*
* DXVA2 HW acceleration
*
* copyright (c) 2009 Laurent Aimar
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_DXVA_H
#define AVCODEC_DXVA_H
/**
* @file
* @ingroup lavc_codec_hwaccel_dxva2
* Public libavcodec DXVA2 header.
*/
#include <stdint.h>
#include <d3d9.h>
#include <dxva2api.h>
/**
* @defgroup lavc_codec_hwaccel_dxva2 DXVA2
* @ingroup lavc_codec_hwaccel
*
* @{
*/
#define FF_DXVA2_WORKAROUND_SCALING_LIST_ZIGZAG 1 ///< Work around for DXVA2 and old UVD/UVD+ ATI video cards
/**
* This structure is used to provides the necessary configurations and data
* to the DXVA2 FFmpeg HWAccel implementation.
*
* The application must make it available as AVCodecContext.hwaccel_context.
*/
struct dxva_context {
/**
* DXVA2 decoder object
*/
IDirectXVideoDecoder *decoder;
/**
* DXVA2 configuration used to create the decoder
*/
const DXVA2_ConfigPictureDecode *cfg;
/**
* The number of surface in the surface array
*/
unsigned surface_count;
/**
* The array of Direct3D surfaces used to create the decoder
*/
LPDIRECT3DSURFACE9 *surface;
/**
* A bit field configuring the workarounds needed for using the decoder
*/
uint64_t workaround;
/**
* Private to the FFmpeg AVHWAccel implementation
*/
unsigned report_id;
};
/**
* @}
*/
#endif /* AVCODEC_DXVA_H */
| 2,129 | 22.932584 | 109 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libswresample/swresample.h
|
/*
* Copyright (C) 2011-2012 Michael Niedermayer ([email protected])
*
* This file is part of libswresample
*
* libswresample is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* libswresample is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with libswresample; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* libswresample public header
*/
#ifndef SWR_H
#define SWR_H
#include <inttypes.h>
#include "libavutil/samplefmt.h"
#define LIBSWRESAMPLE_VERSION_MAJOR 0
#define LIBSWRESAMPLE_VERSION_MINOR 15
#define LIBSWRESAMPLE_VERSION_MICRO 100
#define LIBSWRESAMPLE_VERSION_INT AV_VERSION_INT(LIBSWRESAMPLE_VERSION_MAJOR, \
LIBSWRESAMPLE_VERSION_MINOR, \
LIBSWRESAMPLE_VERSION_MICRO)
#if LIBSWRESAMPLE_VERSION_MAJOR < 1
#define SWR_CH_MAX 32 ///< Maximum number of channels
#endif
#define SWR_FLAG_RESAMPLE 1 ///< Force resampling even if equal sample rate
//TODO use int resample ?
//long term TODO can we enable this dynamically?
enum SwrDitherType {
SWR_DITHER_NONE = 0,
SWR_DITHER_RECTANGULAR,
SWR_DITHER_TRIANGULAR,
SWR_DITHER_TRIANGULAR_HIGHPASS,
SWR_DITHER_NB, ///< not part of API/ABI
};
/** Resampling Filter Types */
enum SwrFilterType {
SWR_FILTER_TYPE_CUBIC, /**< Cubic */
SWR_FILTER_TYPE_BLACKMAN_NUTTALL, /**< Blackman Nuttall Windowed Sinc */
SWR_FILTER_TYPE_KAISER, /**< Kaiser Windowed Sinc */
};
typedef struct SwrContext SwrContext;
/**
* Get the AVClass for swrContext. It can be used in combination with
* AV_OPT_SEARCH_FAKE_OBJ for examining options.
*
* @see av_opt_find().
*/
const AVClass *swr_get_class(void);
/**
* Allocate SwrContext.
*
* If you use this function you will need to set the parameters (manually or
* with swr_alloc_set_opts()) before calling swr_init().
*
* @see swr_alloc_set_opts(), swr_init(), swr_free()
* @return NULL on error, allocated context otherwise
*/
struct SwrContext *swr_alloc(void);
/**
* Initialize context after user parameters have been set.
*
* @return AVERROR error code in case of failure.
*/
int swr_init(struct SwrContext *s);
/**
* Allocate SwrContext if needed and set/reset common parameters.
*
* This function does not require s to be allocated with swr_alloc(). On the
* other hand, swr_alloc() can use swr_alloc_set_opts() to set the parameters
* on the allocated context.
*
* @param s Swr context, can be NULL
* @param out_ch_layout output channel layout (AV_CH_LAYOUT_*)
* @param out_sample_fmt output sample format (AV_SAMPLE_FMT_*).
* @param out_sample_rate output sample rate (frequency in Hz)
* @param in_ch_layout input channel layout (AV_CH_LAYOUT_*)
* @param in_sample_fmt input sample format (AV_SAMPLE_FMT_*).
* @param in_sample_rate input sample rate (frequency in Hz)
* @param log_offset logging level offset
* @param log_ctx parent logging context, can be NULL
*
* @see swr_init(), swr_free()
* @return NULL on error, allocated context otherwise
*/
struct SwrContext *swr_alloc_set_opts(struct SwrContext *s,
int64_t out_ch_layout, enum AVSampleFormat out_sample_fmt, int out_sample_rate,
int64_t in_ch_layout, enum AVSampleFormat in_sample_fmt, int in_sample_rate,
int log_offset, void *log_ctx);
/**
* Free the given SwrContext and set the pointer to NULL.
*/
void swr_free(struct SwrContext **s);
/**
* Convert audio.
*
* in and in_count can be set to 0 to flush the last few samples out at the
* end.
*
* If more input is provided than output space then the input will be buffered.
* You can avoid this buffering by providing more output space than input.
* Convertion will run directly without copying whenever possible.
*
* @param s allocated Swr context, with parameters set
* @param out output buffers, only the first one need be set in case of packed audio
* @param out_count amount of space available for output in samples per channel
* @param in input buffers, only the first one need to be set in case of packed audio
* @param in_count number of input samples available in one channel
*
* @return number of samples output per channel, negative value on error
*/
int swr_convert(struct SwrContext *s, uint8_t **out, int out_count,
const uint8_t **in , int in_count);
/**
* Convert the next timestamp from input to output
* timestampe are in 1/(in_sample_rate * out_sample_rate) units.
*
* @note There are 2 slightly differently behaving modes.
* First is when automatic timestamp compensation is not used, (min_compensation >= FLT_MAX)
* in this case timestamps will be passed through with delays compensated
* Second is when automatic timestamp compensation is used, (min_compensation < FLT_MAX)
* in this case the output timestamps will match output sample numbers
*
* @param pts timstamp for the next input sample, INT64_MIN if unknown
* @returns the output timestamp for the next output sample
*/
int64_t swr_next_pts(struct SwrContext *s, int64_t pts);
/**
* Activate resampling compensation.
*/
int swr_set_compensation(struct SwrContext *s, int sample_delta, int compensation_distance);
/**
* Set a customized input channel mapping.
*
* @param s allocated Swr context, not yet initialized
* @param channel_map customized input channel mapping (array of channel
* indexes, -1 for a muted channel)
* @return AVERROR error code in case of failure.
*/
int swr_set_channel_mapping(struct SwrContext *s, const int *channel_map);
/**
* Set a customized remix matrix.
*
* @param s allocated Swr context, not yet initialized
* @param matrix remix coefficients; matrix[i + stride * o] is
* the weight of input channel i in output channel o
* @param stride offset between lines of the matrix
* @return AVERROR error code in case of failure.
*/
int swr_set_matrix(struct SwrContext *s, const double *matrix, int stride);
/**
* Drops the specified number of output samples.
*/
int swr_drop_output(struct SwrContext *s, int count);
/**
* Injects the specified number of silence samples.
*/
int swr_inject_silence(struct SwrContext *s, int count);
/**
* Gets the delay the next input sample will experience relative to the next output sample.
*
* Swresample can buffer data if more input has been provided than available
* output space, also converting between sample rates needs a delay.
* This function returns the sum of all such delays.
*
* @param s swr context
* @param base timebase in which the returned delay will be
* if its set to 1 the returned delay is in seconds
* if its set to 1000 the returned delay is in milli seconds
* if its set to the input sample rate then the returned delay is in input samples
* if its set to the output sample rate then the returned delay is in output samples
* an exact rounding free delay can be found by using LCM(in_sample_rate, out_sample_rate)
* @returns the delay in 1/base units.
*/
int64_t swr_get_delay(struct SwrContext *s, int64_t base);
/**
* Return the LIBSWRESAMPLE_VERSION_INT constant.
*/
unsigned swresample_version(void);
/**
* Return the swr build-time configuration.
*/
const char *swresample_configuration(void);
/**
* Return the swr license.
*/
const char *swresample_license(void);
#endif
| 8,194 | 35.101322 | 117 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/libdash/libav/include/libpostproc/postprocess.h
|
/*
* Copyright (C) 2001-2003 Michael Niedermayer ([email protected])
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef POSTPROC_POSTPROCESS_H
#define POSTPROC_POSTPROCESS_H
/**
* @file
* @brief
* external postprocessing API
*/
#include "libavutil/avutil.h"
#ifndef LIBPOSTPROC_VERSION_MAJOR
#define LIBPOSTPROC_VERSION_MAJOR 52
#define LIBPOSTPROC_VERSION_MINOR 0
#define LIBPOSTPROC_VERSION_MICRO 100
#endif
#define LIBPOSTPROC_VERSION_INT AV_VERSION_INT(LIBPOSTPROC_VERSION_MAJOR, \
LIBPOSTPROC_VERSION_MINOR, \
LIBPOSTPROC_VERSION_MICRO)
#define LIBPOSTPROC_VERSION AV_VERSION(LIBPOSTPROC_VERSION_MAJOR, \
LIBPOSTPROC_VERSION_MINOR, \
LIBPOSTPROC_VERSION_MICRO)
#define LIBPOSTPROC_BUILD LIBPOSTPROC_VERSION_INT
#define LIBPOSTPROC_IDENT "postproc" AV_STRINGIFY(LIBPOSTPROC_VERSION)
/**
* Return the LIBPOSTPROC_VERSION_INT constant.
*/
unsigned postproc_version(void);
/**
* Return the libpostproc build-time configuration.
*/
const char *postproc_configuration(void);
/**
* Return the libpostproc license.
*/
const char *postproc_license(void);
#define PP_QUALITY_MAX 6
#define QP_STORE_T int8_t
#include <inttypes.h>
typedef void pp_context;
typedef void pp_mode;
#if LIBPOSTPROC_VERSION_INT < (52<<16)
typedef pp_context pp_context_t;
typedef pp_mode pp_mode_t;
extern const char *const pp_help; ///< a simple help text
#else
extern const char pp_help[]; ///< a simple help text
#endif
void pp_postprocess(const uint8_t * src[3], const int srcStride[3],
uint8_t * dst[3], const int dstStride[3],
int horizontalSize, int verticalSize,
const QP_STORE_T *QP_store, int QP_stride,
pp_mode *mode, pp_context *ppContext, int pict_type);
/**
* Return a pp_mode or NULL if an error occurred.
*
* @param name the string after "-pp" on the command line
* @param quality a number from 0 to PP_QUALITY_MAX
*/
pp_mode *pp_get_mode_by_name_and_quality(const char *name, int quality);
void pp_free_mode(pp_mode *mode);
pp_context *pp_get_context(int width, int height, int flags);
void pp_free_context(pp_context *ppContext);
#define PP_CPU_CAPS_MMX 0x80000000
#define PP_CPU_CAPS_MMX2 0x20000000
#define PP_CPU_CAPS_3DNOW 0x40000000
#define PP_CPU_CAPS_ALTIVEC 0x10000000
#define PP_FORMAT 0x00000008
#define PP_FORMAT_420 (0x00000011|PP_FORMAT)
#define PP_FORMAT_422 (0x00000001|PP_FORMAT)
#define PP_FORMAT_411 (0x00000002|PP_FORMAT)
#define PP_FORMAT_444 (0x00000000|PP_FORMAT)
#define PP_PICT_TYPE_QP2 0x00000010 ///< MPEG2 style QScale
#endif /* POSTPROC_POSTPROCESS_H */
| 3,519 | 30.150442 | 79 |
h
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/sdk/index.html
|
<!DOCTYPE html>
<!--
*
* Copyright (C) 2015, bitmovin GmbH, All Rights Reserved
*
* Created on: 2015-06-25 14:00:00
* Author: bitmovin GmbH <[email protected]>
*
* This source code and its use and distribution, is subject to the terms
* and conditions of the applicable license agreement.
*
-->
<html lang="en">
<head>
<title>libdash SDK</title>
<meta charset="UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" type="text/css" href="style/demo.css"/>
<link rel="stylesheet" type="text/css" href="style/style.css"/>
<link href='http://fonts.googleapis.com/css?family=Dosis' rel='stylesheet' type='text/css'/>
</head>
<body>
<div class="container">
<h1>The libdash SDK<span>The page contains links to the documentation, demonstrations and How To guides in context of libdash.</span></h1>
<div class="content">
<ul class="ca-menu">
<li style="height: 150px;">
<a href="https://www.bitmovin.com/libdash_OpenSource/libdash_2_1_doxygen/index.html" target="_blank">
<span class="ca-icon"></span>
<div class="ca-content">
<h2 class="ca-main">Documentation</h2>
<h3 class="ca-sub">Beneath a getting started guide, we provide detailed documentation on how to use and configure the player, our rich API, as well as other relevant information for using libdash.</h3>
</div>
</a>
</li>
<li style="height: 150px;">
<a href="howto/index.html">
<span class="ca-icon"></span>
<div class="ca-content">
<h2 class="ca-main">How To Guide</h2>
<h3 class="ca-sub">Within the How To guide, we show different usage scenarios and player configurations together with a detailed description and source code examples.</h3>
</div>
</a>
</li>
<li style="height: 150px;">
<a href="https://github.com/bitmovin/libdash" target="_blank">
<span class="ca-icon"></span>
<div class="ca-content">
<h2 class="ca-main">GitHub Repository</h2>
<h3 class="ca-sub">Find more information and sources in our GitHub Repositora at https://github.com/bitmovin/libdash</h3>
</div>
</a>
</li>
<li style="height: 75px; background-color: rgba(49,197,199,0.5);">
<a href="https://lists.aau.at/mailman/listinfo/dash" target="_blank">
<span class="ca-icon" style="color: #ffffff; margin-top: -7px;"></span>
<div class="ca-content">
<h2 class="ca-main" style="color: #ffffff;">Mailing List</h2>
</div>
</a>
</li>
<li style="height: 75px; background-color: rgba(44,62,80,0.5);">
<a href="http://www.bitmovin.com" target="_blank">
<span class="ca-icon" style="color: #ffffff; margin-top: -7px;"></span>
<div class="ca-content">
<h2 class="ca-main" style="color: #ffffff">www.bitmovin.com</h2>
</div>
</a>
</li>
</ul>
</div>
<!-- content -->
</div>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script type="text/javascript" src="howto/libdash/settings.js"></script>
</body>
</html>
| 3,370 | 42.217949 | 213 |
html
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/sdk/style/demo.css
|
@import url('reset.css');
/* General Demo Style */
body {
background: #e6eecc url(../media/header.jpg) no-repeat;
background-size:cover;
background-attachment: fixed;
color: #333;
font-family: 'Dosis', Arial, sans-serif;
font-size: 16px;
background-size: cover;
}
p {
text-align: justify;
margin-top: 10px;
}
li span {
color: #666;
}
.container {
position: relative;
}
a {
color: #fff;
text-decoration: none;
}
p a {
color: #0099c5;
text-decoration: underline;
}
.clr {
clear: both;
}
.content {
position: relative;
}
h1 {
margin: 0px;
padding: 20px;
font-size: 32px;
color: #000;
text-shadow: 1px 1px 1px rgba(255, 255, 255, 0.9);
text-align: center;
font-weight: 400;
text-transform: uppercase;
}
h1 span {
display: block;
font-size: 14px;
color: #666;
padding-top: 5px;
}
h1 span a {
color: blue;
text-decoration: underline;
}
h2 span {
font-size: 14px;
}
h3 {
text-align: justify;
}
/* back Button */
#back-button {
display: block;
height: 25px;
border: 2px solid #f5f5f5;
text-align:center;
text-decoration:none;
box-shadow: 0 0 3px gray;
font-size:14px;
background: none;
color: #666;
}
#back-button:hover {
color:#333;
background: #fff;
}
/* Player Style */
.bitdash-html5-player-video-container {
box-shadow: 0 0 30px rgba(0,0,0,1);
}
.player-wrapper {
width: 50%;
margin-left: auto;
margin-right: auto;
margin-bottom: 2%;
}
#missing-key-warning{
width: 60%;
background-color: rgba(255,0,0,0.6);
display: none;
margin: 20px auto;
height: 100%;
position: relative;
min-width: 260px;
padding: 10px;
}
/* Description Style */
.description {
text-align: justify;
padding: 10px;
width: 60%;
margin-left: auto;
margin-right: auto;
margin-bottom: 10px;
overflow: hidden;
position: relative;
display: block;
background: #fff;
-webkit-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}
.demo-description {
list-style-type: square;
padding-left: 40px;
padding-top: 10px;
padding-bottom: 10px;
}
/* Header Style */
.header {
font-family: 'Arial Narrow', Arial, sans-serif;
line-height: 24px;
font-size: 11px;
background: #000;
opacity: 0.9;
text-transform: uppercase;
z-index: 9999;
position: relative;
-moz-box-shadow: 1px 0px 2px #000;
-webkit-box-shadow: 1px 0px 2px #000;
box-shadow: 1px 0px 2px #000;
}
.header a {
padding: 0px 10px;
letter-spacing: 1px;
color: #ddd;
display: block;
float: left;
}
.header a:hover {
color: #fff;
}
.header span.right {
float: right;
}
.header span.right a {
float: none;
display: inline;
}
.more {
position: relative;
clear: both;
font-size: 11px;
padding: 20px 0px;
text-transform: uppercase;
width: 390px;
height: 55px;
margin: 0 auto;
}
.more ul {
display: block;
text-align: center;
}
.more ul li {
display: block;
padding: 4px 2px;
float: left;
}
.more ul li.selected a,
.more ul li.selected a:hover {
background: #0099c5;
color: #fff;
text-shadow: none;
font-weight: bold;
}
.more ul li a {
color: #555;
float: left;
background: #fff;
width: 64px;
padding: 2px 5px;
-moz-box-shadow: 1px 1px 2px #aaa;
-webkit-box-shadow: 1px 1px 2px #aaa;
box-shadow: 1px 1px 2px #aaa;
}
.more ul li a:hover {
background: #000;
color: #fff;
}
| 3,430 | 14.38565 | 57 |
css
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/sdk/style/reset.css
|
/* CSS reset */
body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, form, fieldset, input, textarea, p, blockquote, th, td {
margin: 0;
padding: 0;
}
html, body {
margin: 0;
padding: 0;
}
table {
border-collapse: collapse;
border-spacing: 0;
}
fieldset, img {
border: 0;
}
input {
border: 1px solid #b0b0b0;
padding: 3px 5px 4px;
color: #979797;
width: 190px;
}
address, caption, cite, code, dfn, th, var {
font-style: normal;
font-weight: normal;
}
ol, ul {
list-style: none;
}
caption, th {
text-align: left;
}
h1, h2, h3, h4, h5, h6 {
font-size: 100%;
font-weight: normal;
}
q:before, q:after {
content: '';
}
abbr, acronym {
border: 0;
}
| 701 | 12.5 | 120 |
css
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/sdk/style/style.css
|
@font-face {
/* Font Awesome by Dave Gandy - http://fontawesome.io */
font-family: 'WebSymbolsRegular';
src: url('http://bitdash-a.akamaihd.net/bitdash-sdk/fontawesome-webfont.eot');
src: url('http://bitdash-a.akamaihd.net/bitdash-sdk/fontawesome-webfont.eot?#iefix') format('embedded-opentype'),
url('http://bitdash-a.akamaihd.net/bitdash-sdk/fontawesome-webfont.woff') format('woff');
font-weight: normal;
font-style: normal;
}
p > img {
box-shadow: 3px 3px 3px darkgray;
margin: 0px 15px 10px 10px;
}
hr {
display: block;
width: 80%;
height: 1px;
border: 0;
border-top: 1px solid #ccc;
margin: 0 auto;
padding: 0;
}
.disabled {
background-color: lightgray !important;
-webkit-transition: none !important;
-moz-transition: none !important;
-o-transition: none !important;
-ms-transition: none !important;
transition: none !important;
}
.disabled li:hover {
background-color: lightgray !important;
}
li.disabled .ca-icon {
font-family: 'WebSymbolsRegular', cursive;
font-size: 30px;
text-shadow: 0px 0px 1px #333;
line-height: 90px;
position: absolute;
width: 90px;
left: 20px;
text-align: center;
-webkit-transition: none;
-moz-transition: none;
-o-transition: none;
-ms-transition: none;
transition: none;
}
li.disabled:hover .ca-main, li.disabled:hover .ca-sub, li.disabled .ca-main {
-webkit-animation: none !important;
-moz-animation: none !important;
-ms-animation: none !important;
-webkit-transition: none !important;
-moz-transition: none !important;
-o-transition: none !important;
-ms-transition: none !important;
transition: none !important;
color: #666 !important;
}
li.disabled:hover .ca-icon {
font-size: 30px !important;
color: #666 !important;
opacity: 1 !important;
text-shadow: 0px 0px 1px #333 !important;
}
#dimmed-fullscreen-container {
background-color: rgba(0,0,0,0.5);
width: 100%;
height: 100%;
z-index: 10;
top: 0;
left: 0;
position: fixed;
display: none;
cursor: default;
}
.error-container {
position:fixed;
top: 50%;
left: 50%;
width: 500px;
height: 120px;
background-color: rgba(255,0,0,0.6);
margin-top: -60px;
margin-left: -250px;
}
.ca-menu {
padding: 0;
margin: 20px auto;
width: 500px;
}
.ca-menu li {
width: 500px;
height: 150px;
overflow: hidden;
position: relative;
display: block;
background: #fff;
-webkit-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
margin-bottom: 4px;
-webkit-transition: all 300ms linear;
-moz-transition: all 300ms linear;
-o-transition: all 300ms linear;
-ms-transition: all 300ms linear;
transition: all 300ms linear;
}
.ca-menu li:last-child {
margin-bottom: 0px;
}
.ca-menu li a {
text-align: left;
width: 100%;
height: 100%;
display: block;
color: #333;
position: relative;
}
.ca-icon {
font-family: 'WebSymbolsRegular', cursive;
font-size: 30px;
/*text-shadow: 0px 0px 1px #333;*/
line-height: 90px;
position: absolute;
width: 90px;
left: 20px;
text-align: center;
-webkit-transition: all 300ms linear;
-moz-transition: all 300ms linear;
-o-transition: all 300ms linear;
-ms-transition: all 300ms linear;
transition: all 300ms linear;
}
.ca-content {
position: absolute;
left: 120px;
width: 370px;
height: 60px;
top: 20px;
}
.ca-main {
font-size: 30px;
-webkit-transition: all 300ms linear;
-moz-transition: all 300ms linear;
-o-transition: all 300ms linear;
-ms-transition: all 300ms linear;
transition: all 300ms linear;
}
.ca-sub {
font-size: 14px;
color: #666;
-webkit-transition: all 300ms linear;
-moz-transition: all 300ms linear;
-o-transition: all 300ms linear;
-ms-transition: all 300ms linear;
transition: all 300ms linear;
}
.ca-menu li:hover {
background: #e1f0fa;
}
.ca-menu li:hover .ca-icon {
font-size: 50px;
color: #259add;
opacity: 0.8;
text-shadow: 0px 0px 13px #fff;
}
.error-container:hover .ca-icon {
font-size: 50px;
/*color: #259add;*/
opacity: 0.8;
text-shadow: 0px 0px 13px #fff;
}
.ca-menu li:hover .ca-main, .error-container:hover .ca-main {
opacity: 1;
color: #2676ac;
-webkit-animation: moveFromTop 300ms ease-in-out;
-moz-animation: moveFromTop 300ms ease-in-out;
-ms-animation: moveFromTop 300ms ease-in-out;
}
.ca-menu li:hover .ca-sub {
opacity: 1;
-webkit-animation: moveFromBottom 300ms ease-in-out;
-moz-animation: moveFromBottom 300ms ease-in-out;
-ms-animation: moveFromBottom 300ms ease-in-out;
}
@-webkit-keyframes moveFromBottom {
from {
opacity: 0;
-webkit-transform: translateY(200%);
}
to {
opacity: 1;
-webkit-transform: translateY(0%);
}
}
@-moz-keyframes moveFromBottom {
from {
opacity: 0;
-moz-transform: translateY(200%);
}
to {
opacity: 1;
-moz-transform: translateY(0%);
}
}
@-ms-keyframes moveFromBottom {
from {
opacity: 0;
-ms-transform: translateY(200%);
}
to {
opacity: 1;
-ms-transform: translateY(0%);
}
}
@-webkit-keyframes moveFromTop {
from {
opacity: 0;
-webkit-transform: translateY(-200%);
}
to {
opacity: 1;
-webkit-transform: translateY(0%);
}
}
@-moz-keyframes moveFromTop {
from {
opacity: 0;
-moz-transform: translateY(-200%);
}
to {
opacity: 1;
-moz-transform: translateY(0%);
}
}
@-ms-keyframes moveFromTop {
from {
opacity: 0;
-ms-transform: translateY(-200%);
}
to {
opacity: 1;
-ms-transform: translateY(0%);
}
}
| 5,633 | 19.562044 | 115 |
css
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/sdk/howto/dvr.html
|
<!DOCTYPE html>
<!--
*
* Copyright (C) 2015, bitmovin GmbH, All Rights Reserved
*
* Created on: 2015-06-12 14:00:00
* Author: bitmovin GmbH <[email protected]>
*
* This source code and its use and distribution, is subject to the terms
* and conditions of the applicable license agreement.
*
-->
<html lang="en">
<head>
<title>libdash SDK</title>
<meta charset="UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" type="text/css" href="../style/demo.css"/>
<link rel="stylesheet" type="text/css" href="../style/style.css"/>
<link href='http://fonts.googleapis.com/css?family=Dosis' rel='stylesheet' type='text/css'/>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script type="text/javascript" src="libdash/settings.js"></script>
<!-- player -->
<script type="text/javascript" src="https://bitmovin-a.akamaihd.net/bitdash/latest/bitdash.min.js"></script>
<style type="text/css" media="screen">
#version {
color: red;
text-decoration: underline;
padding-left: 10px;
}
</style>
</head>
<body>
<a href="index.html"><button id="back-button">Back to the Menu</button></a>
<div class="container">
<h1>Live Stream DVR <span>Time Shift built-in</span></h1>
<div class="content">
<div class="player-wrapper">
<div id="player"></div>
</div>
<div class="description">
<h2 class="ca-main">DVR in MPEG-DASH and HLS</h2>
<p>Using DVR is easy: simply pause the player, take a break, and resume the live stream. If you were distracted and missed the last field goal, just go back a few minutes or seconds.</p>
<p>The scrub bar (progress slider) can be used to go back in time, to have an immediate feedback about whether the player is playing at the live edge or not. And of course, jumping back to the live edge is supported as well.</p>
<p>The player also offers an API for developers to control DVR (currently HTML5 player only), as shown in the following examples:</p>
<pre><code class="language-javascript">
bitdash('player').getMaxTimeShift(); // Returns the size of the DVR window in seconds
bitdash('player').timeShift(-120); // Sets the playback offset in seconds within the DVR window from the live edge
bitdash('player').getTimeShift(); // Returns the current playback offset to the live edge
</code></pre>
<p></p>
</div>
</div>
</div>
<script type="text/javascript" src="js/ErrorMsgHelper.js"></script>
<script type="text/javascript">
(function() {
var createPlayer = function () {
var conf = {
key: window.libdashSettings.credentials.key,
source: {
dash: 'http://bitlivedemo-a.akamaihd.net/mpds/stream-exo-liveedge.php?streamkey=bitcodin&inputType=dash',
hls: 'http://bitlivedemo-a.akamaihd.net/m3u8s/bitcodin.m3u8',
poster: 'http://bitdash-a.akamaihd.net/webpages/dash-player/images/poster.png'
},
style: {
width: '100%'
},
events: {
onError: function (data) {
console.error("error: " + data.code + ": " + data.message);
},
onReady: function (data) {
console.log(this.getVersion() + ' onReady: ', data);
}
}
};
var player = bitdash('player');
player.setup(conf);
};
createPlayer();
}());
</script>
</body>
</html>
| 3,558 | 37.268817 | 234 |
html
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/sdk/howto/startupQuality.html
|
<!DOCTYPE html>
<!--
*
* Copyright (C) 2015, bitmovin GmbH, All Rights Reserved
*
* Created on: 2015-06-12 14:00:00
* Author: bitmovin GmbH <[email protected]>
*
* This source code and its use and distribution, is subject to the terms
* and conditions of the applicable license agreement.
*
-->
<html lang="en">
<head>
<title>libdash SDK</title>
<meta charset="UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" type="text/css" href="../style/demo.css"/>
<link rel="stylesheet" type="text/css" href="../style/style.css"/>
<link href='http://fonts.googleapis.com/css?family=Dosis' rel='stylesheet' type='text/css'/>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script type="text/javascript" src="js/PreferredStartupQuality.js"></script>
<script type="text/javascript" src="libdash/settings.js"></script>
<!-- player -->
<script type="text/javascript" src="https://bitmovin-a.akamaihd.net/bitdash/latest/bitdash.min.js"></script>
</head>
<body>
<a href="index.html">
<button id="back-button">Back to the Menu</button>
</a>
<div class="container">
<h1>Custom Adaptation Logic<span>Set a preferred startup quality</span></h1>
<div class="content">
<div class="player-wrapper">
<div id="player"></div>
</div>
<div class="description">
<h2 class="ca-main">Getting Started with Custom Adaptation</h2>
<p>The player provides two new events: <strong>onVideoAdaptation</strong> and <strong>onAudioAdaptation</strong>. It can be used to "overwrite" a suggested representation with any other. This can be used to create a custom adaptation logic.</p>
<p>A sample implementation is available in <a href="js/PreferredStartupQuality.js">/howto/js/PreferredStartupQuality.js</a> adaptation folder of this package. It uses a preferred startup quality and searches for the representation equal to or lower than the startup quality. It uses this or a higher quality (if suggested by the player's internal logic) for a specified amount of time. It can be used as follows:</p>
<pre><code class="language-javascript">
var player = bitdash('myVideoDiv');
player.setup(conf);
var startupQuality = new PreferredStartupQuality(player, 1000000, 10);
</code></pre>
<p>The first parameter is the player object. The second is the preferred quality in bits per seconds and is optional. It defaults to 1mbps. The third, also optional, specifies how long the startup phase lasts, in seconds.</p>
<p>In addition, it's recommended to set a higher startup threshold than using the default adaptation logic. This is the number of seconds of data which has to be buffered on the client before playback begins. For the PreferredStartupQuality provided, e.g. 5 seconds works for better but also for poorer bandwidth quite good:</p>
<pre><code class="language-javascript">
var config = {
...
tweaks: {
startup_threshold: 5
}
}</code></pre>
</div>
</div>
</div>
<script type="text/javascript">
(function() {
var conf = {
key: window.libdashSettings.credentials.key,
source: {
dash: 'https://bitdash-a.akamaihd.net/content/MI201109210084_1/mpds/f08e80da-bf1d-4e3d-8899-f0f6155f6efa.mpd'
},
style: {
width: '50vw',
aspectratio: '16/9'
},
tweaks: {
startup_threshold: 5
}
};
var player = bitdash('player');
player.setup(conf);
var startupQuality = new PreferredStartupQuality(player, 1000000, 10);
})();
</script>
</body>
</html>
| 3,730 | 41.885057 | 422 |
html
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/sdk/howto/technologySelection.html
|
<!DOCTYPE html>
<!--
*
* Copyright (C) 2015, bitmovin GmbH, All Rights Reserved
*
* Created on: 2015-06-12 14:00:00
* Author: bitmovin GmbH <[email protected]>
*
* This source code and its use and distribution, is subject to the terms
* and conditions of the applicable license agreement.
*
-->
<html lang="en">
<head>
<title>libdash SDK</title>
<meta charset="UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" type="text/css" href="../style/demo.css"/>
<link rel="stylesheet" type="text/css" href="../style/style.css"/>
<link href='http://fonts.googleapis.com/css?family=Dosis' rel='stylesheet' type='text/css'/>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script type="text/javascript" src="libdash/settings.js"></script>
<!-- player -->
<script type="text/javascript" src="https://bitmovin-a.akamaihd.net/bitdash/latest/bitdash.min.js"></script>
<style type="text/css" media="screen">
#version {
color: red;
text-decoration: underline;
padding-left: 10px;
}
</style>
</head>
<body>
<a href="index.html"><button id="back-button">Back to the Menu</button></a>
<div class="container">
<h1>Platform Independent Playout <span>Automatic Technology Selection</span></h1>
<div class="content">
<div class="player-wrapper">
<div id="player"></div>
</div>
<div class="description">
<h2 class="ca-main">The player finds a Playback Option for Every Platform</h2>
<p>It chooses between three different streaming technologies, namely:
<ul class="demo-description">
<li>MPEG-DASH</li>
<li>HLS</li>
<li>Progressive</li>
</ul>
As well as three different player options:
<ul class="demo-description">
<li>HTML5/MSE based</li>
<li>Flash based</li>
<li>Native Support</li>
</ul>
</p>
<p>Open this page in different browser with or without Flash and see how the underlying technology changes:</p>
<p>Version:<span id="version">unkown version</span></p>
</div>
<div class="description">
<h2 class="ca-main">How to Achieve the Optimal Platform Coverage</h2>
<p>To achieve the optimal platform coverage, simple add different streaming technologies to the configuration. The player will automatically choose what's best for the
underlying platform. The source section of the config option for this demo looks like the following:</p>
<pre><code class="language-javascript">
source: {
dash : "http://bitdash-a.akamaihd.net/content/sintel/sintel.mpd",
hls : "http://bitdash-a.akamaihd.net/content/sintel/hls/sintel.m3u8",
progressive : [
"http://bitdash-a.akamaihd.net/content/sintel/Sintel.mp4",
"http://bitdash-a.akamaihd.net/content/sintel/Sintel.webm"
],
poster : "http://bitdash-a.akamaihd.net/content/sintel/poster.png"
}
</code></pre>
<p>A detailed overview of supported technologies can be found in our <a href="http://developer.dash-player.com/supported-formats-devices" target="_blank">device coverage documentation</a>.</p>
<p>For more information about the configuration using different streaming technologies, please have a look at the
<a href="http://developer.dash-player.com/player-configuration" target="_blank">related document</a>.</p>
</div>
</div>
</div>
<script type="text/javascript" src="js/ErrorMsgHelper.js"></script>
<script type="text/javascript">
(function() {
var createPlayer = function () {
var conf = {
key: window.libdashSettings.credentials.key,
source: {
dash: 'http://bitdash-a.akamaihd.net/content/sintel/sintel.mpd',
hls: 'http://bitdash-a.akamaihd.net/content/sintel/hls/sintel.m3u8',
progressive: [
'http://bitdash-a.akamaihd.net/content/sintel/Sintel.mp4',
'http://bitdash-a.akamaihd.net/content/sintel/Sintel.webm'
],
poster: 'http://bitdash-a.akamaihd.net/content/sintel/poster.png'
},
style: {
width: '100%'
},
events: {
onError: function (data) {
console.error("error: " + data.code + ": " + data.message);
},
onReady: function (data) {
console.log(this.getVersion() + ' onReady: ', data);
document.getElementById('version').innerHTML = this.getVersion(true);
}
}
};
var player = bitdash('player');
player.setup(conf);
};
createPlayer();
}());
</script>
</body>
</html>
| 4,876 | 38.650407 | 198 |
html
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/sdk/howto/simpleConfiguration.html
|
<!DOCTYPE html>
<!--
*
* Copyright (C) 2015, bitmovin GmbH, All Rights Reserved
*
* Created on: 2015-06-12 14:00:00
* Author: bitmovin GmbH <[email protected]>
*
* This source code and its use and distribution, is subject to the terms
* and conditions of the applicable license agreement.
*
-->
<html lang="en">
<head>
<title>libdash SDK</title>
<meta charset="UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" type="text/css" href="../style/demo.css"/>
<link rel="stylesheet" type="text/css" href="../style/style.css"/>
<link href='http://fonts.googleapis.com/css?family=Dosis' rel='stylesheet' type='text/css'/>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script type="text/javascript" src="libdash/settings.js"></script>
<!-- player -->
<script type="text/javascript" src="https://bitmovin-a.akamaihd.net/bitdash/latest/bitdash.min.js"></script>
</head>
<body>
<a href="index.html"><button id="back-button">Back to the Menu</button></a>
<div class="container">
<h1>A simple configuration <span>Getting Startedd</span></h1>
<div class="content">
<div class="player-wrapper">
<div id="player"></div>
</div>
<div class="description">
<h2 class="ca-main">Getting Started with the Most Simple Configuration</h2>
<pre><code class="language-javascript">
<script src="<span id="cdnPath"></span>">
</script>
</code></pre>
<p>And tell the player what to do, using a config object, which might look as follows:</p>
<pre><code class="language-javascript">
var config = {
key : '<span id="playerKey"></span>',
source: {
dash: 'https://bitdash-a.akamaihd.net/.../f08e80da-bf1d-4e3d-8899-f0f6155f6efa.mpd'
}
}</code></pre>
<p>All entries within the config object are case sensitive. The config object can have further (optional) properties. While key is a string, all others are objects.
The next step is to add and setup a player. Just pass the unique id of an HTML container element (like div):</p>
<pre><code class="language-javascript">
var player = bitdash('player');
player.setup(conf);
</code></pre>
<p>It's as simple as that! For more information about the player configuration, please have a look at the <a href="http://developer.dash-player.com/player-configuration" target="_blank">related document</a>.</p>
</div>
</div>
</div>
<script type="text/javascript" src="js/ErrorMsgHelper.js"></script>
<script type="text/javascript">
(function() {
document.getElementById('playerKey').innerHTML = window.libdashSettings.credentials.key;
document.getElementById('cdnPath').innerHTML = window.libdashSettings.cdnPath;
var createPlayer = function () {
var conf = {
key: window.libdashSettings.credentials.key,
source: {
dash: 'https://bitdash-a.akamaihd.net/content/MI201109210084_1/mpds/f08e80da-bf1d-4e3d-8899-f0f6155f6efa.mpd'
},
style: {
width: '50vw',
aspectratio: '16/9'
}
};
var player = bitdash('player');
player.setup(conf);
};
createPlayer();
}());
</script>
</body>
</html>
| 3,410 | 37.325843 | 217 |
html
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/sdk/howto/keyboard.html
|
<!DOCTYPE html>
<!--
*
* Copyright (C) 2015, bitmovin GmbH, All Rights Reserved
*
* Created on: 2015-06-12 14:00:00
* Author: bitmovin GmbH <[email protected]>
*
* This source code and its use and distribution, is subject to the terms
* and conditions of the applicable license agreement.
*
-->
<html lang="en">
<head>
<title>libdash SDK</title>
<meta charset="UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" type="text/css" href="../style/demo.css"/>
<link rel="stylesheet" type="text/css" href="../style/style.css"/>
<link href='http://fonts.googleapis.com/css?family=Dosis' rel='stylesheet' type='text/css'/>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script type="text/javascript" src="libdash/settings.js"></script>
<!-- player -->
<script type="text/javascript" src="https://bitmovin-a.akamaihd.net/bitdash/latest/bitdash.min.js"></script>
<script>
function goBack() {
window.history.back();
}
</script>
</head>
<body>
<button id="back-button" onclick="goBack()">Back to the Menu</button>
<div class="container">
<h1>Keyboard Controls</span></h1>
<div class="content">
<div class="player-wrapper">
<div id="player"></div>
</div>
<div class="description">
<h2 class="ca-main">Keyboard Controls</h2>
<p>We have implemented several different commands for playback control via keyboard shortcuts:</p>
<table>
<tr>
<td>
<ul class="demo-description">
<li>Play/Pause</li>
<li>Mute/Unmute</li>
<li>Enter Fullscreen</li>
<li>Exit Fullscreen</li>
<li>Seek + 5 seconds</li>
<li>Seek + 10 seconds</li>
<li>Seek - 5 seconds</li>
<li>Seek - 10 seconds</li>
<li>Volume + 5%</li>
<li>Volume + 10%</li>
<li>Volume - 5%</li>
<li>Volume - 10%</li>
</ul>
</td>
<td style="padding-left:20px;">
<ul>
<li><span>Space</span></li>
<li><span>M</span></li>
<li><span>F</span></li>
<li><span>Esc</span></li>
<li><span>right</span></li>
<li><span>CTRL + right</span></li>
<li><span>left</span></li>
<li><span>CTRL + left</span></li>
<li><span>up</span></li>
<li><span>CTRL + up</span></li>
<li><span>down</span></li>
<li><span>CTRL + down</span></li>
</ul>
</td>
</tr>
</table>
<p>Our implementation is open for additional keyboard shortcuts.</p>
</div>
</div>
</div>
<script type="text/javascript" src="js/ErrorMsgHelper.js"></script>
<script type="text/javascript">
(function() {
var createPlayer = function () {
var conf = {
key: window.libdashSettings.credentials.key,
source: {
dash: 'https://bitdash-a.akamaihd.net/content/MI201309180161/mpds/37340d42-5d62-49f5-a832-3615fac80a89.mpd',
hls: 'https://bitdash-a.akamaihd.net/content/MI201309180161/m3u8s/37340d42-5d62-49f5-a832-3615fac80a89.m3u8',
poster: 'https://bitdash-a.akamaihd.net/content/MI201309180161/poster-image.jpg'
},
style: {
width: '100%'
},
events: {
onError: function (data) {
console.error("error: " + data.code + ": " + data.message);
},
onReady: function (data) {
console.log(this.getVersion() + ' onReady: ', data);
}
}
};
var player = bitdash('player');
player.setup(conf);
};
createPlayer();
}());
</script>
</body>
</html>
| 3,921 | 31.683333 | 119 |
html
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/sdk/howto/subtitles.html
|
<!DOCTYPE html>
<!--
*
* Copyright (C) 2015, bitmovin GmbH, All Rights Reserved
*
* Created on: 2015-06-12 14:00:00
* Author: bitmovin GmbH <[email protected]>
*
* This source code and its use and distribution, is subject to the terms
* and conditions of the applicable license agreement.
*
-->
<html lang="en">
<head>
<title>libdash SDK</title>
<meta charset="UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" type="text/css" href="../style/demo.css"/>
<link rel="stylesheet" type="text/css" href="../style/style.css"/>
<link href='http://fonts.googleapis.com/css?family=Dosis' rel='stylesheet' type='text/css'/>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script type="text/javascript" src="libdash/settings.js"></script>
<!-- player -->
<script type="text/javascript" src="https://bitmovin-a.akamaihd.net/bitdash/latest/bitdash.min.js"></script>
</head>
<body>
<a href="index.html"><button id="back-button">Back to the Menu</button></a>
<div class="container">
<h1>Subtitles & Closed Captions <span>Displaying text for additional or interpretive information</span></h1>
<div class="content">
<div class="player-wrapper">
<div id="player"></div>
</div>
<div class="description">
<h2 class="ca-main">Subtitles or Closed Captions specified in the Manifest</h2>
<p>The player supports multiple audio/language tracks, without the need of duplication or repackaging the video.
Publishers can easily provide multiple language tracks for video assets, where our players support multi-bitrate
audio tracks also in multi-language scenarios. It further includes functionalities that allows viewers to
instantaneously switch to an alternate audio track either before or during playback.</p>
<p>Text Tracks can be specified within the MPD or M3u8, as it can be seen in our
<a href="http://bitdash-a.akamaihd.net/content/sintel/sintel.mpd" target="_blank">DASH (mpd)</a> and
<a href="http://bitdash-a.akamaihd.net/content/sintel/hls/sintel.m3u8" target="_blank">HLS (m3u8) test streams</a>.</p>
</div>
</div>
</div>
<script type="text/javascript" src="js/ErrorMsgHelper.js"></script>
<script type="text/javascript">
(function() {
var createPlayer = function () {
var conf = {
key: window.libdashSettings.credentials.key,
source: {
dash: 'http://bitdash-a.akamaihd.net/content/sintel/sintel.mpd',
hls: 'http://bitdash-a.akamaihd.net/content/sintel/hls/sintel.m3u8',
progressive: [
'http://bitdash-a.akamaihd.net/content/sintel/Sintel.mp4',
'http://bitdash-a.akamaihd.net/content/sintel/Sintel.webm'
],
poster: 'http://bitdash-a.akamaihd.net/content/sintel/poster.png'
},
style: {
width: '50vw',
aspectratio: '16/9'
},
events: {
onError: function (data) {
console.error("error: " + data.code + ": " + data.message);
},
onReady: function (data) {
console.log(this.getVersion() + ' onReady: ', data);
}
}
};
var player = bitdash('player');
player.setup(conf);
};
createPlayer();
}());
</script>
</body>
</html>
| 3,460 | 37.455556 | 127 |
html
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/sdk/howto/index.html
|
<!DOCTYPE html>
<!--
*
* Copyright (C) 2015, bitmovin GmbH, All Rights Reserved
*
* Created on: 2015-06-12 14:00:00
* Author: bitmovin GmbH <[email protected]>
*
* This source code and its use and distribution, is subject to the terms
* and conditions of the applicable license agreement.
*
-->
<html lang="en">
<head>
<title>libdash SDK</title>
<meta charset="UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" type="text/css" href="../style/demo.css"/>
<link rel="stylesheet" type="text/css" href="../style/style.css"/>
<link href='http://fonts.googleapis.com/css?family=Dosis' rel='stylesheet' type='text/css'/>
</head>
<body>
<div id="dimmed-fullscreen-container" onclick="hideErrorMessage()">
<div class="error-container" onclick="hideErrorMessage()">
<span class="ca-icon"></span>
<div class="ca-content">
<h2 class="ca-main" style="color:white;">Feature not supported</h2>
<h3 id="error-message" style="color:white;">The player does not support this feature in this version.</h3>
</div>
</div>
</div>
<a href="../index.html"><button id="back-button">Back to the Menu</button></a>
<div class="container">
<h1>libdash SDK</h1>
<div class="content">
<ul class="ca-menu">
<li id="webserver-warning" style="height: 150px; background-color: rgba(255,0,0,0.6); display: none;">
<span class="ca-icon"></span>
<div class="ca-content">
<h2 class="ca-main" style="color:white;">Unsupported Protocol</h2>
<h3 style="color:white;">This file has been loaded using the unsupported "file" protocol. Please use a web server and open this page using http or https.</h3>
</div>
</li>
<li style="height: 150px;">
<a href="simpleConfiguration.html">
<span class="ca-icon"></span>
<div class="ca-content">
<h2 class="ca-main">A Simple Configuration <span>simpleConfiguration.html</span></h2>
<h3 class="ca-sub">This demonstrations shows a simple and lightweight player configuration and how to embed it into your website using HTML.</h3>
</div>
</a>
</li>
<li style="height: 250px;">
<a href="technologySelection.html">
<span class="ca-icon"></span>
<div class="ca-content">
<h2 class="ca-main">Smart Choices<br><span>technologySelection.html</span></h2>
<h3 class="ca-sub">The player chooses from different streaming technologies, ranging from MPEG-DASH and HLS to progressive streaming based on browser capabilities, to
provided the best platform independent streaming experience. Furthermore different quality representations of the video and audio streams are selected automatically,
based on bitmovin’s advanced and US-patented adaptation & streaming algorithms.</h3>
</div>
</a>
</li>
<li style="height: 200px;">
<a href="dvr.html">
<span class="ca-icon"></span>
<div class="ca-content">
<h2 class="ca-main">Live DVR<br><span>dvr.html</span></h2>
<h3 class="ca-sub">The player supports DVR in live streams of both, HLS and MPEG-DASH. The available DVR window depends on the Manifest file.</h3>
</div>
</a>
</li>
<li style="height: 180px;">
<a href="startupQuality.html">
<span class="ca-icon"></span>
<div class="ca-content">
<h2 class="ca-main">Custom Quality Adaptation<br><span>startupQuality.html</span></h2>
<h3 class="ca-sub">The player provides you the ability to freely decide which quality to use for every single segment! Although it gives you a suggestion, you can adapt the quality based on your own
metrics and experience.</h3>
</div>
</a>
</li>
<li style="height: 200px;">
<a href="keyboard.html">
<span class="ca-icon"></span>
<div class="ca-content">
<h2 class="ca-main">Using Keyboard Shortcuts<br><span>keyboard.html</span></h2>
<h3 class="ca-sub">We all know how handy it can be to press space to pause a video, or increasing the volume by using the up-key. This are only two examples of keys which can be used for control.</h3>
</div>
</a>
</li>
<li style="height: 150px;">
<a href="subtitles.html">
<span class="ca-icon"></span>
<div class="ca-content">
<h2 class="ca-main">Subtitles and Closed Captions <span>subtitles.html</span></h2>
<h3 class="ca-sub">Using the player, one can use different kinds of subtitles or closed captions, either specified in the Manifest or set via an API Command.</h3>
</div>
</a>
</li>
<li style="height: 200px;">
<a href="javascriptAPI.html">
<span class="ca-icon"></span>
<div class="ca-content">
<h2 class="ca-main">Developing <span>javascriptAPI.html</span></h2>
<h3 class="ca-sub">The player can be controlled using a JavaScript API. Furthermore, several callback functions for different types of events can be added. The demo
shows the usage of such events and API call to get playback information about the player and user interaction, which can for instance be used for analytic purposes.</h3>
</div>
</a>
</li>
</ul>
</div>
<!-- content -->
</div>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script type="text/javascript" src="libdash/settings.js"></script>
</body>
</html>
| 5,833 | 48.02521 | 212 |
html
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/code/ndn-dash/sdk/howto/javascriptAPI.html
|
<!DOCTYPE html>
<!--
*
* Copyright (C) 2015, bitmovin GmbH, All Rights Reserved
*
* Created on: 2015-06-12 14:00:00
* Author: bitmovin GmbH <[email protected]>
*
* This source code and its use and distribution, is subject to the terms
* and conditions of the applicable license agreement.
*
-->
<html lang="en">
<head>
<title>libdash SDK</title>
<meta charset="UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" type="text/css" href="../style/demo.css"/>
<link rel="stylesheet" type="text/css" href="../style/style.css"/>
<link href='http://fonts.googleapis.com/css?family=Dosis' rel='stylesheet' type='text/css'/>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script type="text/javascript" src="libdash/settings.js"></script>
<!-- player -->
<script type="text/javascript" src="https://bitmovin-a.akamaihd.net/bitdash/latest/bitdash.min.js"></script>
<!-- chart library -->
<script type="text/javascript" src="js/smoothie.js"></script>
<style type="text/css" media="screen">
div#debugData h1 {
font: 16px/26px 'PT Sans', sans-serif;
font-weight: bold;
}
p#version {
text-align: center;
}
div#videoData {
width: 7em;
margin-right: 20px;
float: right;
}
div#videoDataLabels {
width: 12em;
float: left;
}
div#debugData {
font: 16px/26px 'PT Sans', sans-serif;
float: left;
margin-bottom: 20px;
}
</style>
</head>
<body>
<a href="index.html"><button id="back-button">Back to the Menu</button></a>
<div class="container">
<h1>Player interaction<span>Using the JavaScript API and Event Callbacks</span></h1>
<div class="content">
<div class="player-wrapper">
<div id="player"></div>
</div>
<div class="description">
<h2 class="ca-main">Video Bitrate Graph</h2>
<div id="graphWrapper">
<canvas id="graph"></canvas>
</div>
</div>
<div class="description">
<h2 class="ca-main">Data Monitoring</h2>
<div id="debugData">
<p id="version">unkown version</p>
<div id="videoData">
<p>
<br>
<span id='audioBuffer'>0.0</span> [sec]<br>
<span id='videoBuffer'>0.0</span> [sec]<br>
<br>
<br>
<span id='dlVideoBitrate'>0.0</span> [kbps]<br>
<span id='dlResolution'>000 x 000</span><br>
</p>
</div>
<div id="videoDataLabels">
<p>
<strong>Playback Data</strong><br>
Audio Buffer Length:<br>
Video Buffer Length:<br>
<br>
<strong>Download Data</strong><br>
Video Bitrate:<br>
Resolution:<br>
</p>
</div>
</div>
<p style="clear:both;">For more information about how to interact with the player, please have a look at the <a href="http://developer.dash-player.com/javascript-api" target="_blank">related document</a>.</p>
</div>
</div>
</div>
<script type="text/javascript" src="js/ErrorMsgHelper.js"></script>
<script type="text/javascript">
(function() {
var createPlayer = function () {
window.graphTimeSeries = new TimeSeries();
var conf = {
key: window.libdashSettings.credentials.key,
source: {
dash: 'https://bitdash-a.akamaihd.net/content/MI201109210084_1/mpds/f08e80da-bf1d-4e3d-8899-f0f6155f6efa.mpd',
hls: 'https://bitdash-a.akamaihd.net/content/MI201109210084_1/m3u8s/f08e80da-bf1d-4e3d-8899-f0f6155f6efa.m3u8',
poster: 'https://bitdash-a.akamaihd.net/content/MI201109210084_1/poster.jpg'
},
style: {
width: '50vw',
aspectratio: '16/9'
},
events: {
onError: function (data) {
console.error("error: " + data.code + ": " + data.message);
},
onReady: function (data) {
console.log(this.getVersion() + ' onReady: ', data);
document.getElementById('version').innerHTML = this.getVersion();
startGraph();
}
}
};
var player = bitdash('player');
player.setup(conf);
setInterval(function () {
var downloadedVideoData = player.getDownloadedVideoData();
var videoBitrateKbps = Math.round(downloadedVideoData.bitrate / 10.24) / 100;
document.getElementById('audioBuffer').innerHTML = player.getAudioBufferLength();
document.getElementById('videoBuffer').innerHTML = player.getVideoBufferLength();
document.getElementById('dlResolution').innerHTML = downloadedVideoData.width + ' x ' + downloadedVideoData.height;
document.getElementById('dlVideoBitrate').innerHTML = videoBitrateKbps;
window.graphTimeSeries.append(new Date().getTime(), videoBitrateKbps);
}, 500);
var startGraph = function () {
var graph = document.getElementById('graph');
graph.width = graph.parentNode.offsetWidth;
if (graph.width < 300) {
graph.width = 300;
}
graph.height = 306;
var smoothie = new SmoothieChart({
interpolation: 'step',
labels: {
precision: 0,
fillStyle: '#000'
},
maxValue: 6400,
minValue: 0,
millisPerPixel: 100,
grid: {
millisPerLine: 10000,
borderVisible: false,
fillStyle: 'transparent'
}
});
smoothie.streamTo(graph, 500);
smoothie.addTimeSeries(window.graphTimeSeries, {
strokeStyle: 'rgb(0, 0, 0)',
lineWidth: 3
});
};
};
createPlayer();
}());
</script>
</body>
</html>
| 5,967 | 31.259459 | 214 |
html
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/LICENSE.md
| 0 | 0 | 0 |
md
|
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/bandit.py
| 0 | 0 | 0 |
py
|
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/README.md
|
# Bandits
This module includes the Bandit algorithm using the contextual Bayes UCB with continous shrinkage prior and one step stochastic variational inference (SVI). Several other Bandit implementations known from the literature are implemented as well.
The module GbRegression is an implementation of the Three Parameter Beta Normal prior. Additionally, an implemtation of the stochastic approximation for SVI is provided
The related algorithms are my interpretation, please double check the implementations.
# Demo
Several example applications can be found in the folder 'test'.
# References
[1] Armagan, Artin, Merlise Clyde, and David B. Dunson. "Generalized beta mixtures of Gaussians." Advances in neural information processing systems. 2011. (http://papers.nips.cc/paper/4439-generalized-beta-mixtures-of-gaussians)
[2] Kaufmann, Emilie, Olivier Cappé, and Aurélien Garivier. "On Bayesian upper confidence bounds for bandit problems." Artificial Intelligence and Statistics. 2012. (http://proceedings.mlr.press/v22/kaufmann12/kaufmann12.pdf)
[3] Krause, Andreas, and Cheng S. Ong. "Contextual gaussian process bandit optimization." Advances in Neural Information Processing Systems. 2011.(https://papers.nips.cc/paper/4487-contextual-gaussian-process-bandit-optimization)
[4] Li, Lihong, et al. "A contextual-bandit approach to personalized news article recommendation." Proceedings of the 19th international conference on World wide web. ACM, 2010. (https://arxiv.org/pdf/1003.0146.pdf)
[5] Bastani, Hamsa, and Mohsen Bayati. "Online decision-making with high-dimensional covariates." (2015). (http://web.stanford.edu/~bayati/papers/LassoBandit.pdf)
| 1,671 | 71.695652 | 246 |
md
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/test/gb_reg_sim.py
|
from packages.sparseEstimation.GbRegression import GbRegression as Gb
import numpy as np
import matplotlib.pyplot as plt
p = 100
n = 1000
beta = np.random.randn(p)
s_0 = 3
idx = np.random.choice(range(p), p - s_0, replace=False)
beta[idx] = 0
X = np.random.randn(n, p)
noise = np.random.randn(n).reshape(-1, 1)
y = X.dot(beta.reshape(-1, 1)) + noise
obj = Gb(1 / 2, 1 / 2, 1e-6, 1e-6, p)
#Batch
#obj.fit(X, y)
#SVI
obj.fit_svi(X,y)
print(beta)
print(obj.coef_)
print(np.mean((obj.coef_ - beta) ** 2))
plt.figure()
plt.stem(beta, linefmt='r')
plt.stem(obj.coef_, linefmt='b')
plt.show()
| 594 | 17.030303 | 69 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/test/lasso_bandit_sim.py
|
import numpy as np
import matplotlib.pyplot as plt
from packages.banditAlgorithms.LassoBandit import LassoBandit
# time horizon
T = 2000
# lasso Bandit parameters
q = 1 # forced sampling parameter
h = 5 # localization parameter
lambda_1 = 0.05
lambda_2_0 = 0.05
# Dimensionality of the features
D = 100
# number of arms
K = 2
# initialize bandit object
lassoBanditObj = LassoBandit(D, K, q, h, lambda_1, lambda_2_0)
# true regression coefficient for simulation
theta_a_true = [np.random.randn(D, 1) for _ in range(K)]
# make them sparse
s_0 = 5
for a in range(K):
idx = np.random.choice(range(D), D - s_0, replace=False)
theta_a_true[a][idx] = 0
# save rewards
rew_op = np.zeros((T, 1))
rew_lassoBandit = np.zeros((T, 1))
# save actions
a_lassoBandit = np.zeros(T, dtype=np.int8)
a_opt = np.zeros(T, dtype=np.int8)
for t in range(T):
print(t)
# observe context truncate at 1/-1
x = np.random.randn(D, 1)
x[x > 1] = 1
x[x < -1] = -1
# find bandit action
a_lassoBandit[t] = lassoBanditObj.get_opt_action(x, t)
a_opt[t] = np.argmax([theta_a_true[a].T.dot(x) for a in range(K)])
# observe reward
noise = np.random.randn(1)
rew_lassoBandit[t] = theta_a_true[a_lassoBandit[t]].T.dot(x) + noise
rew_op[t] = theta_a_true[a_opt[t]].T.dot(x) + noise
# update bandit parameters
lassoBanditObj.update_params(x, rew_lassoBandit[t], a_lassoBandit[t], t)
plt.figure()
plt.title("Lasso Bandit")
plt.plot(np.cumsum(rew_op), label="optimal")
plt.plot(np.cumsum(rew_lassoBandit), label="LassoBandit")
plt.plot(np.cumsum(rew_op) - np.cumsum(rew_lassoBandit), label="LassoBandit-regret")
plt.xlabel("time")
plt.ylabel("cumulative reward")
plt.legend()
plt.show()
| 1,722 | 24.338235 | 84 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/test/hyblinucb_sim.py
|
import numpy as np
import matplotlib.pyplot as plt
from packages.banditAlgorithms.HybridLinucbBandit import HybridLinucbBandit
# time horizon
T = 1000
# ucb width factor
alpha = 1
# Dimensionality of the features
D = 100
# Dimensionality of arm independent features
k = 50
# number of arms
K = 3
# initialize bandit object
hybridLinucbObj = HybridLinucbBandit(D, K, k, alpha)
# true regression coefficient for simulation
theta_a_true = [np.random.randn(D, 1) for _ in range(K)]
beta_true = np.random.randn(k, 1)
# save rewards
rew_op_hyb = np.zeros((T, 1))
rew_hyblinucb = np.zeros((T, 1))
a_hyblinucb = np.zeros(T, dtype=np.int8)
a_opt = np.zeros(T, dtype=np.int8)
for t in range(T):
# observe context
x_a = np.random.randn(D, K)
z_a = np.random.randn(k, K)
# find bandit action
a_hyblinucb[t] = hybridLinucbObj.get_opt_action(x_a, z_a)
a_opt[t] = np.argmax(
[theta_a_true[a].T.dot(x_a[:, a].reshape(-1, 1)) + beta_true.T.dot(z_a[:, a].reshape(-1, 1)) for a in
range(K)])
# observe reward
noise = np.random.randn(1)
rew_hyblinucb[t] = beta_true.T.dot(z_a[:, a_hyblinucb[t]].reshape(-1, 1)) + theta_a_true[a_hyblinucb[t]].T.dot(
x_a[:, a_hyblinucb[t]].reshape(-1, 1)) + noise
rew_op_hyb[t] = beta_true.T.dot(z_a[:, a_opt[t]].reshape(-1, 1)) + theta_a_true[a_opt[t]].T.dot(
x_a[:, a_opt[t]].reshape(-1, 1)) + noise
# update bandit parameters
hybridLinucbObj.update_params(x_a, z_a, rew_hyblinucb[t], a_hyblinucb[t])
plt.figure()
plt.title("hybrid Linucb")
plt.plot(np.cumsum(rew_op_hyb), label="optimal")
plt.plot(np.cumsum(rew_hyblinucb), label="hyblinucb")
plt.plot(np.cumsum(rew_op_hyb) - np.cumsum(rew_hyblinucb), label="hyblinucb-regret")
plt.xlabel("time")
plt.ylabel("cumulative reward")
plt.legend()
plt.show()
| 1,813 | 27.34375 | 115 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/test/gp_bandit_sim.py
|
import numpy as np
import matplotlib.pyplot as plt
from sklearn import gaussian_process as gp
from packages.banditAlgorithms.GpBandit import GpBandit
# time horizon
T = 1000
# ucb width factor
beta = 1
# Dimensionality of the features
D = 3
# number of arms
K = 2
# initialize bandit object
sigma2 = 1
kernel_s = gp.kernels.ConstantKernel(constant_value=1)
kernel_z = gp.kernels.DotProduct(sigma_0=0)
kernel = gp.kernels.Product(kernel_s, kernel_z)
GPBanditObj = GpBandit(D, K, beta, kernel, sigma2)
# true regression coefficient for simulation
theta_a_true = [np.random.randn(D, 1) for _ in range(K)]
# save rewards
rew_op = np.zeros((T, 1))
rew_GPBandit = np.zeros((T, 1))
# save actions
a_GPBandit = np.zeros(T, dtype=np.int8)
a_opt = np.zeros(T, dtype=np.int8)
for t in range(T):
print(t)
# observe context
x_a = np.random.randn(D, K)
# find bandit action
a_GPBandit[t] = GPBanditObj.get_opt_action(x_a)
a_opt[t] = np.argmax([theta_a_true[a].T.dot(x_a[:, a].reshape(-1, 1)) for a in range(K)])
# observe reward
noise = np.random.randn(1)
rew_GPBandit[t] = theta_a_true[a_GPBandit[t]].T.dot(x_a[:, a_GPBandit[t]].reshape(-1, 1)) + noise
rew_op[t] = theta_a_true[a_opt[t]].T.dot(x_a[:, a_opt[t]].reshape(-1, 1)) + noise
# update bandit parameters
GPBanditObj.update_params(x_a, rew_GPBandit[t], a_GPBandit[t])
plt.figure()
plt.title("GpBandit")
plt.plot(np.cumsum(rew_op), label="optimal")
plt.plot(np.cumsum(rew_GPBandit), label="GpBandit")
plt.plot(np.cumsum(rew_op) - np.cumsum(rew_GPBandit), label="GpBandit-regret")
plt.xlabel("time")
plt.ylabel("cumulative reward")
plt.legend()
plt.show()
| 1,656 | 27.084746 | 101 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/test/sparse_bayes_ucb_sim.py
|
import numpy as np
import matplotlib.pyplot as plt
from packages.banditAlgorithms.SparseBayesUcbOse import SparseBayesUcbOse
# time horizon
T = 1000
# Dimensionality of the features
D = 10
# number of arms
K = 10
a = 1 / 2
b = 1 / 2
c_0 = 1e-6
d_0 = 1e-6
# initialize bandit object
sparseBayesUcbObj = SparseBayesUcbOse(D, K, a, b, c_0, d_0)
# true regression coefficient for simulation
theta_a_true = [np.random.randn(D, 1) for _ in range(K)]
# make them sparse
s_0 = 5
for a in range(K):
idx = np.random.choice(range(D), D - s_0, replace=False)
theta_a_true[a][idx] = 0
# save rewards
rew_op = np.zeros((T, 1))
rew_sparseBayesUcb = np.zeros((T, 1))
# save actions
a_sparseBayesUcb = np.zeros(T, dtype=np.int8)
a_opt = np.zeros(T, dtype=np.int8)
for t in range(T):
print(t)
# observe context
x_a = np.random.randn(D, K)
# find bandit action
a_sparseBayesUcb[t] = sparseBayesUcbObj.get_opt_action(x_a)
a_opt[t] = np.argmax([theta_a_true[a].T.dot(x_a[:, a].reshape(-1, 1)) for a in range(K)])
# observe reward
noise = np.random.randn(1)
rew_sparseBayesUcb[t] = theta_a_true[a_sparseBayesUcb[t]].T.dot(x_a[:, a_sparseBayesUcb[t]].reshape(-1, 1)) + noise
rew_op[t] = theta_a_true[a_opt[t]].T.dot(x_a[:, a_opt[t]].reshape(-1, 1)) + noise
# update bandit parameters
sparseBayesUcbObj.update_params(x_a, rew_sparseBayesUcb[t], a_sparseBayesUcb[t], t)
plt.figure()
plt.title("SparseBayesUcb")
plt.plot(np.cumsum(rew_op), label="optimal")
plt.plot(np.cumsum(rew_sparseBayesUcb), label="SparseBayesUcb")
plt.plot(np.cumsum(rew_op) - np.cumsum(rew_sparseBayesUcb), label="SparseBayesUcb-regret")
plt.xlabel("time")
plt.ylabel("cumulative reward")
plt.legend()
plt.show()
| 1,729 | 26.460317 | 119 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/test/linucb_sim.py
|
import numpy as np
import matplotlib.pyplot as plt
from packages.banditAlgorithms.LinucbBandit import LinucbBandit
# time horizon
T = 1000
# ucb width factor
alpha = 1
# Dimensionality of the features
D = 100
# number of arms
K = 3
# initialize bandit object
linucbObj = LinucbBandit(D, K, alpha)
# true regression coefficient for simulation
theta_a_true = [np.random.randn(D, 1) for _ in range(K)]
# save rewards
rew_op = np.zeros((T, 1))
rew_linucb = np.zeros((T, 1))
# save actions
a_linucb = np.zeros(T, dtype=np.int8)
a_opt = np.zeros(T, dtype=np.int8)
for t in range(T):
# observe context
x_a = np.random.randn(D, K)
# find bandit action
a_linucb[t] = linucbObj.get_opt_action(x_a)
a_opt[t] = np.argmax([theta_a_true[a].T.dot(x_a[:, a].reshape(-1, 1)) for a in range(K)])
# observe reward
noise = np.random.randn(1)
rew_linucb[t] = theta_a_true[a_linucb[t]].T.dot(x_a[:, a_linucb[t]].reshape(-1, 1)) + noise
rew_op[t] = theta_a_true[a_opt[t]].T.dot(x_a[:, a_opt[t]].reshape(-1, 1)) + noise
# update bandit parameters
linucbObj.update_params(x_a, rew_linucb[t], a_linucb[t])
plt.figure()
plt.title("Linucb")
plt.plot(np.cumsum(rew_op), label="optimal")
plt.plot(np.cumsum(rew_linucb), label="linucb")
plt.plot(np.cumsum(rew_op) - np.cumsum(rew_linucb), label="linucb-regret")
plt.xlabel("time")
plt.ylabel("cumulative reward")
plt.legend()
plt.show()
| 1,411 | 25.148148 | 95 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/test/__init__.py
|
from test import gp_bandit_sim
from test import hyblinucb_sim
from test import lasso_bandit_sim
from test import linucb_sim
from test import sparse_bayes_ucb_sim
__all__ = ["gp_bandit_sim.py", "hyblinucb_sim.py", "lasso_bandit_sim.py", "linucb_sim.py", "sparse_bayes_ucb_sim.py"]
| 281 | 34.25 | 117 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/packages/__init__.py
|
"""package for MAB in video streaming
Example
-------
Implemented Algorithms
----------------------
"""
import packages.sparseEstimation
import packages.banditAlgorithms
__all__ = ["sparseEstimation", "banditAlgorithms"]
| 225 | 15.142857 | 50 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/packages/sparseEstimation/GbRegression.py
|
import numpy as np
from scipy.linalg import *
from scipy.special import kv, gammaln
# TODO implement jeffreys prior c_0=0 d_0=0
# TODO implement gibbs sampling
# TODO implement sampling from variational distributions
# TODO add maxiter
class GbRegression(object):
"""Creates a generalized beta regression object which uses the TPBN model for sparse bayesian regression.
(http://papers.nips.cc/paper/4439-generalized-beta-mixtures-of-gaussians)
"""
def __init__(self, a, b, c_0, d_0, p):
"""Initializes a TPBN regression object
Parameters
----------
a : float
hyper parameter
b : float
hyper parameter
c_0 : float
hyper parameter
d_0 : float
hyper parameter
p:
number of dimensions in the regression
"""
# hyper parameters
self.hyper = HyperParam(a, b, c_0, d_0)
# regression parameters
self.p = p
self.n_train = 1
self.X_train = np.array([])
self.X_T_X = np.array([])
self.y_train = np.array([])
self.coef_ = np.zeros((self.p, 1))
self.sigma_ = np.eye(self.p)
# VB initialization
self.var = VariationalParam(self.p, self.hyper)
self.nat = VariationalNatParam(self.p, self.hyper)
self.nat.set_with_var(self.p, self.hyper, self.var)
self.nat_hat = NatEstimate(self.nat)
self.elbo = -1e10
def fit(self, X, y, tol=1e-2):
"""fit the regression model using variational Bayes.
Parameters
----------
X
n x p matrix. Design matrix with n samples and p variables
y
n x 1 vector. response vector of the regression
tol: float
tolerance value for convergence of the elbo
"""
self.preprocess_data(X,y)
self.X_T_X = self.X_train.T.dot(self.X_train)
# update elbo with traing data information
self.elbo = self.compute_lower_bound()
# VB!
converged = False
# TODO: change convergence to absulte
while np.logical_not(converged):
elbo_old = self.elbo
# TODO Check of cholesky factorization is possible here
self.var.Sigma_inv = self.var.sigma2_inv * (self.X_T_X + self.var.T_inv)
self.var.A_inv = inv(self.X_T_X + self.var.T_inv)
self.var.mu = self.var.A_inv.dot(self.X_train.T).dot(self.y_train)
self.var.Sigma = 1 / self.var.sigma2_inv * self.var.A_inv
self.var.bb = self.var.Sigma + self.var.mu.dot(self.var.mu.T)
self.var.c_ast = (self.n_train + self.p + self.hyper.c_0) / 2
self.var.d_ast = (self.y_train.T.dot(self.y_train)
- 2 * self.y_train.T.dot(self.X_train).dot(self.var.mu)
+ np.sum(self.var.bb * self.X_T_X.T)
+ np.diag(self.var.bb).reshape(-1, 1).T.dot(self.var.tau_inv)
+ self.hyper.d_0) / 2
self.var.sigma2_inv = self.var.c_ast / self.var.d_ast
self.var.lambda_ = (self.hyper.a + self.hyper.b) / (self.var.tau + self.var.phi)
self.var.phi = (self.p * self.hyper.b + 1 / 2) / (self.var.omega + np.sum(self.var.lambda_))
self.var.omega = 1 / (self.var.phi + 1)
self.var.v = np.sqrt(2 * self.var.lambda_ * self.var.sigma2_inv * np.diag(self.var.bb).reshape(-1, 1))
self.var.tau = ((np.sqrt(self.var.sigma2_inv * np.diag(self.var.bb).reshape(-1, 1))
* kv(self.hyper.a + 1 / 2, self.var.v)) /
(np.sqrt(2 * self.var.lambda_) * kv(self.hyper.a - 1 / 2, self.var.v)))
self.var.tau_inv = ((np.sqrt(2 * self.var.lambda_) * kv(3 / 2 - self.hyper.a, self.var.v)) /
(np.sqrt(self.var.sigma2_inv * np.diag(self.var.bb).reshape(-1, 1))
* kv(1 / 2 - self.hyper.a, self.var.v)))
self.var.T_inv = np.diag(np.squeeze(self.var.tau_inv))
self.elbo = self.compute_lower_bound()
elbo_new = self.elbo
eps = np.abs(elbo_new - elbo_old)
if eps < tol:
converged = True
self.coef_ = np.squeeze(self.var.mu)
self.sigma_ = self.var.Sigma
# test
def fit_svi(self, X, y, tol=1e-2, kappa=1, tau=0):
"""fit the regression model using stochastic variational inference.
Parameters
----------
X
n x p matrix. Design matrix with n samples and p variables
y
n x 1 vector. response vector of the regression
tol: float
tolerance value for convergence of the elbo
kappa: float
scalar kappa in (.5,1]. Forgetting rate for the step size
tau: float
scalar tau>0. Delay for the step size
"""
self.preprocess_data(X, y)
converged = False
# TODO: change convergence to absulte
t = 0
while np.logical_not(converged):
elbo_old = self.compute_lower_bound()
idx = np.random.choice(range(self.n_train), 1)
X_sam = self.X_train[idx, :].reshape(1, -1)
y_sam = self.y_train[idx, :].reshape(1, -1)
rho_t = (t + 1 + tau)**(-kappa)
self.svi_update(X_sam, y_sam, rho_t, self.n_train)
elbo_new = self.elbo
eps = np.abs(elbo_new - elbo_old)
if eps < tol:
converged = True
t = t + 1
def svi_update(self, X_sam, y_sam, rho_t, N):
"""updates the variational parameter with one step in the direction of the natural gradient.
Parameters
----------
X_sam
n_mini x p matrix. minibatch design matrix with n samples and p variables
y_sam
n_mini x 1 vector. minibatch response vector of the regression
rho_t
scalar. Step size for the stochastic gradient
N
number of replicates to calculate an unbiased estimate of the gradient
"""
X_T_X_sam = X_sam.T.dot(X_sam)
# Calculate unbiased estimate of the natural gradient
self.nat_hat.estimate_nat(self.hyper, self.var, X_sam, X_T_X_sam, y_sam, N, self.p)
# calculate updates
self.nat.gradient_update(self.nat_hat, rho_t)
# calculate parameters
self.var = self.nat.get_normal_param(self.p, self.hyper)
self.elbo = self.compute_lower_bound()
self.coef_ = np.squeeze(self.var.mu)
self.sigma_ = self.var.Sigma
def predict(self, X_ast, return_std=False, return_cov=False):
""" predicts the points from X_ast in posterior mean and if specified with bayesian confidence interval
Parameters
----------
X_ast:
n x p matrix. n points with p dimensions for the prediction
return_std: bool
if True returns standard deviation of the query points
return_cov: bool
if True returns covariance matrix of the query points
Returns
-------
"""
dim = np.shape(X_ast)
if np.shape(dim)[0] == 1:
n_ast = 1
else:
n_ast = dim[0]
mu = X_ast.dot(self.coef_)
sigma = np.sqrt(X_ast.dot(self.sigma_).dot(X_ast).T)
if return_std:
return mu, np.diag(sigma.reshape(n_ast, n_ast))
elif return_cov:
return mu, sigma
else:
return mu
def compute_lower_bound(self):
# Computes evidence lower bound
elbo = (
-self.n_train / 2 * np.log(2 * np.pi)
+ self.hyper.c_0 / 2 * np.log(self.hyper.d_0 / 2)
- gammaln(self.hyper.c_0 / 2)
- self.var.c_ast * np.log(self.var.d_ast)
+ gammaln(self.var.c_ast)
+ self.var.lambda_.T.dot(self.var.tau)
+ self.var.phi * np.sum(self.var.lambda_)
- self.p * (gammaln(self.hyper.a) + gammaln(self.hyper.b))
- 2 * gammaln(1 / 2)
+ np.log(2) * ((5/4 - self.hyper.a / 2) * self.p - 1 / 2)
+ self.p * gammaln(self.hyper.a + self.hyper.b)
+ gammaln(self.p * self.hyper.b + 1 / 2)
+ 1 / 2 * self.var.omega
+ self.var.phi * self.var.omega
+ 1 / 2 * np.linalg.slogdet(self.var.Sigma)[1]
- (self.hyper.a / 2 - 1 / 4) * (
np.sum(np.log(self.var.lambda_)) - self.p * np.log(self.var.sigma2_inv))
+ (self.hyper.a / 2 - 1 / 4) * np.sum(np.log(np.diag(self.var.bb).reshape(-1, 1)))
+ np.sum(np.log(kv(self.hyper.a - 1 / 2, self.var.v)))
- self.var.sigma2_inv / 2 * (
np.diag(self.var.bb).reshape(-1, 1).T.dot(self.var.tau_inv))
- (self.p * self.hyper.b + 1 / 2) * np.log(self.var.omega + np.sum(self.var.lambda_))
- (self.hyper.a + self.hyper.b) * np.sum(np.log(self.var.tau + self.var.phi))
- np.log(self.var.phi + 1)
)
return elbo
def preprocess_data(self,X,y):
#get data in correct shape and save it
# Singleton training set_with_var reshaping
if np.shape(np.shape(X))[0] == 1:
self.n_train = 1
self.p = np.size(X)
self.X_train = np.reshape(X, (1, -1))
else:
(self.n_train, self.p) = np.shape(X)
self.X_train = X
self.y_train = y.reshape(-1, 1)
# def get_params(self):
# test = 1
#
# def sample_y(self,X,n_samples=1):
# test = 1
class HyperParam(object):
# Class for the hyper parameters
def __init__(self, a, b, c_0, d_0):
self.a = a
self.b = b
self.c_0 = c_0
self.d_0 = d_0
class VariationalParam(object):
#Class for the variational parameters
def __init__(self, p, hyper):
self.mu = np.zeros(p).reshape(-1, 1)
self.Sigma = np.eye(p)
self.Sigma_inv = np.eye(p)
self.bb = self.Sigma + self.mu.dot(self.mu.T)
self.c_ast = (0 + p + hyper.c_0) / 2
self.d_ast = np.random.exponential(1)
self.sigma2_inv = self.c_ast / self.d_ast
self.lambda_ = np.ones((p, 1)) * np.random.exponential(1)
self.phi = np.random.exponential(1)
self.omega = np.random.exponential(1)
self.v = np.sqrt(2 * self.lambda_ * self.sigma2_inv * np.diag(self.bb).reshape(-1, 1))
self.tau = np.ones((p, 1)) * np.random.exponential(1)
self.tau_inv = np.ones((p, 1)) * np.random.exponential(1)
self.T_inv = np.diag(np.squeeze(self.tau_inv))
self.A_inv = np.diag(1 / np.squeeze(self.tau_inv))
def set_with_nat(self, nat):
# set the variational parameters (var) using the natural parameters (nat)
eta_beta_2_inv = inv(nat.beta[1])
self.mu = -1 / 2 * eta_beta_2_inv.dot(nat.beta[0])
self.Sigma = -1 / 2 * eta_beta_2_inv
self.Sigma_inv = -2 * nat.beta[1]
self.bb = self.Sigma + self.mu.dot(self.mu.T)
self.c_ast = nat.sigma_inv[0] + 1
self.d_ast = -nat.sigma_inv[1]
self.sigma2_inv = self.c_ast / self.d_ast
self.v = np.sqrt(-2 * nat.tau[1] * 2 * nat.tau[2])
self.tau = np.sqrt(-nat.tau[2] / nat.tau[1]) * kv(nat.tau[0] + 2, self.v) / kv(nat.tau[0] + 1, self.v)
self.tau_inv = np.sqrt(-nat.tau[1] / nat.tau[2]) * kv(-nat.tau[0], self.v) / kv(-nat.tau[0] - 1, self.v)
self.lambda_ = (nat.lambda_[0] + 1) / (-1 * nat.lambda_[1])
self.phi = (nat.phi[0] + 1) / (-1 * nat.phi[1])
self.omega = (nat.omega[0] + 1) / (-1 * nat.omega[1])
self.A_inv = self.sigma2_inv * self.Sigma
self.T_inv = np.diag(np.squeeze(self.tau_inv))
def get_nat_param(self, p, hyper):
# return the natural parameters (nat) based on the variational parameters (var)
nat = VariationalNatParam(p, hyper)
nat.beta = [self.Sigma_inv.dot(self.mu), -1 / 2 * self.Sigma_inv]
nat.sigma_inv = [self.c_ast - 1, -self.d_ast]
nat.tau = [hyper.a - 3 / 2, -self.lambda_, np.diag(self.bb).reshape(-1, 1).dot(self.sigma2_inv) / 2]
nat.lambda_ = [hyper.a + hyper.b - 1, -self.tau - self.phi]
nat.phi = [p * hyper.b - 1 / 2, -np.sum(self.lambda_) - self.omega]
nat.omega = [0, -self.phi - 1]
return nat
class VariationalNatParam(object):
# Class for the natural parameters
def __init__(self, p, hyper):
self.beta = [np.zeros((p, 1)), np.zeros((p, p))]
self.sigma_inv = [hyper.c_0 / 2 - 1, -hyper.d_0 / 2]
self.tau = [hyper.a - 3 / 2, np.zeros((p, 1)), np.zeros((p, 1))]
self.lambda_ = [hyper.a + hyper.b - 1, np.zeros((p, 1))]
self.phi = [p * hyper.b - 1 / 2, 0]
self.omega = [0, 0]
def set_with_var(self, p, hyper, var):
# set the the natural parameters (nat) using variational parameters (var)
self.beta = [var.Sigma_inv.dot(var.mu), -1 / 2 * var.Sigma_inv]
self.sigma_inv = [var.c_ast - 1, -var.d_ast]
self.tau = [hyper.a - 3 / 2, -var.lambda_, np.diag(var.bb).reshape(-1, 1).dot(var.sigma2_inv) / 2]
self.lambda_ = [hyper.a + hyper.b - 1, -var.tau - var.phi]
self.phi = [p * hyper.b - 1 / 2, -np.sum(var.lambda_) - var.omega]
self.omega = [0, -var.phi - 1]
def get_normal_param(self, p, hyper):
# return the variational parameters (var) based on the natural parameters (nat)
eta_beta_2_inv = inv(self.beta[1])
var = VariationalParam(p, hyper)
var.mu = -1 / 2 * eta_beta_2_inv.dot(self.beta[0])
var.Sigma = -1 / 2 * eta_beta_2_inv
var.Sigma_inv = -2 * self.beta[1]
var.bb = var.Sigma + var.mu.dot(var.mu.T)
var.c_ast = self.sigma_inv[0] + 1
var.d_ast = -self.sigma_inv[1]
var.sigma2_inv = var.c_ast / var.d_ast
var.v = np.sqrt(-2 * self.tau[1] * 2 * self.tau[2])
var.tau = np.sqrt(-self.tau[2] / self.tau[1]) * kv(self.tau[0] + 2, var.v) / kv(self.tau[0] + 1, var.v)
var.tau_inv = np.sqrt(-self.tau[1] / self.tau[2]) * kv(-self.tau[0], var.v) / kv(-self.tau[0] - 1, var.v)
var.lambda_ = (self.lambda_[0] + 1) / (-1 * self.lambda_[1])
var.phi = (self.phi[0] + 1) / (-1 * self.phi[1])
var.omega = (self.omega[0] + 1) / (-1 * self.omega[1])
var.A_inv = var.sigma2_inv * var.Sigma
var.T_inv = np.diag(np.squeeze(var.tau_inv))
return var
def gradient_update(self, nat_hat, rho_t):
# do a gradient update based on the intermediate natural parameters nat_hat with step size rho_t
self.beta = [(1 - rho_t) * self.beta[param_idx] + rho_t * nat_hat.beta[param_idx] for param_idx in range(2)]
self.sigma_inv = [(1 - rho_t) * self.sigma_inv[param_idx] + rho_t * nat_hat.sigma_inv[param_idx] for param_idx
in range(2)]
self.tau = [(1 - rho_t) * self.tau[param_idx] + rho_t * nat_hat.tau[param_idx] for param_idx in range(3)]
self.lambda_ = [(1 - rho_t) * self.lambda_[param_idx] + rho_t * nat_hat.lambda_[param_idx] for param_idx in
range(2)]
self.phi = [(1 - rho_t) * self.phi[param_idx] + rho_t * nat_hat.phi[param_idx] for param_idx in range(2)]
self.omega = [(1 - rho_t) * self.omega[param_idx] + rho_t * nat_hat.omega[param_idx] for param_idx in range(2)]
# TODO This class is unnecessary it can be integrated into variational nat_param
class NatEstimate(object):
#class for the intermediate natural parameters
def __init__(self, nat):
self.beta = [nat.beta[0], nat.beta[1]]
self.sigma_inv = ([- nat.sigma_inv[0], -nat.sigma_inv[1]])
self.tau = [- nat.tau[0], - nat.tau[1]]
self.lambda_ = [- nat.lambda_[0], - nat.lambda_[1]]
self.phi = [- nat.phi[0], - nat.phi[1]]
self.omega = [0, - nat.omega[1]]
def estimate_nat(self, hyper, var, X_sam, X_T_X_sam, y_sam, N, p):
# estimates the intermediate natural parameters using the data X,y and N replicates
self.beta = [var.sigma2_inv * N * X_sam.T.dot(y_sam),
-1 / 2 * var.sigma2_inv * (N * X_T_X_sam + var.T_inv)]
self.sigma_inv = ([(N + p + hyper.c_0) / 2 - 1,
-(N * y_sam.T.dot(y_sam)
- 2 * N * y_sam.T.dot(X_sam).dot(var.mu)
+ N * np.sum(var.bb * X_T_X_sam.T)
+ np.diag(var.bb).reshape(-1, 1).T.dot(
var.tau_inv) + hyper.d_0) / 2])
self.tau = [hyper.a - 3 / 2, -var.lambda_,
np.diag(var.bb).reshape(-1, 1).dot(var.sigma2_inv) / 2]
self.lambda_ = [hyper.a + hyper.b - 1,
- var.tau - var.phi]
self.phi = [p * hyper.b - 1 / 2,
-np.sum(var.lambda_) - var.omega]
self.omega = [0, -var.phi - 1]
| 17,608 | 41.227818 | 119 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/packages/sparseEstimation/__init__.py
|
"""sparse estimation module for sparse linear regression.
Example
-------
Implemented Algorithms
----------------------
"""
from packages.sparseEstimation import GbRegression
__all__ = ["GbRegression.py"]
| 209 | 15.153846 | 57 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/packages/banditAlgorithms/GpBandit.py
|
import numpy as np
from sklearn import gaussian_process as gp
# TODO make beta_t time dependent
# TODO create separated GP obj per arm, since White noise kernel for the actions is assumed anyway
class GpBandit(object):
"""Creates a bandit object which uses the gaussian process contextual bandit algorithm.
(https://papers.nips.cc/paper/4487-contextual-gaussian-process-bandit-optimization)
"""
def __init__(self, D, K, beta_t, kernel, sigma2):
"""Initializes a GP contextual bandit object
Parameters
----------
D : int
Dimension of the context features
K : int
Number of arms
beta_t: float
width parameter of the ucb
kernel: kernel obj
kernel for the gaussian processes from sklearn
sigma2:
noise level of the observations in the GP
"""
self.D = D
self.K = K
self.beta_t = beta_t
# TODO: Make this varinputin for the kernel --> default use RBF kernel?
self.GpObj = gp.GaussianProcessRegressor(kernel=kernel, alpha=sigma2)
# initialization
self.S = np.array([]).reshape(0, 1)
self.Z = np.array([]).reshape(0, D)
self.X = np.hstack((self.S, self.Z))
self.y = np.array([]).reshape(0, 1)
self.sigma2 = sigma2
def get_opt_action(self, x_a):
"""Calculates action.
Parameters
----------
x_a
D x K matrix. D dimensional context feature vector for each arm a in (1,...,K)
Returns
-------
int
arm index for the current parameter and context set_with_var
"""
# estimate!
(mu, sigma) = self.GpObj.predict(np.hstack((np.arange(self.K).reshape(-1, 1), x_a.T)), return_std=True)
a_t = np.argmax(mu.T + self.beta_t * sigma)
return a_t
def update_params(self, x_a, r_t, a_t):
"""Updates the parameters.
Parameters
----------
x_a
D x K matrix. D dimensional context feature vector for each arm a in (1,...,K)
r_t
last achieved reward when playing action a_t
a_t
last played arm
"""
self.S = np.vstack((self.S, a_t))
self.Z = np.vstack((self.Z, x_a[:, a_t].reshape(1, -1)))
self.y = np.vstack((self.y, r_t))
self.X = np.hstack((self.S, self.Z))
self.GpObj.fit(self.X, self.y)
| 2,781 | 33.345679 | 111 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/packages/banditAlgorithms/LassoBandit.py
|
import numpy as np
from sklearn import linear_model as lm
class LassoBandit(object):
"""Creates a bandit object which uses the lasso bandit algorithm.
(http://web.stanford.edu/~bayati/papers/LassoBandit.pdf)
"""
def __init__(self, D, K, q, h, lambda_1, lambda_2_0):
"""Initializes a lasso bandit contextual bandit object
Parameters
----------
D : int
Dimension of the context features
K : int
Number of arms
q: int
forced sampling parameter
h: float
localization parameter
lambda_1: float
regularization parameter 1
lambda_2_0: float
regularization parameter 2
"""
self.D = D
self.K = K
self.q = q
self.h = h
self.lambda_1 = lambda_1
self.lambda_2_0 = lambda_2_0
self.lambda_2 = lambda_2_0
self.T_a = [np.arange(q * a + 1 - 1, q * (a + 1) + 1 - 1) for a in range(K)]
self.j_a = [np.arange(q * a + 1 - 1, q * (a + 1) + 1 - 1) for a in range(K)]
self.n = 0
self.S_a = [[]] * K
self.X = np.array([]).reshape(0, D)
self.y = np.array([]).reshape(0, 1)
self.beta_hat_1 = [np.zeros((D, 1))] * K
self.beta_hat_2 = [np.zeros((D, 1))] * K
def get_opt_action(self, x, t):
"""Calculates action.
Parameters
----------
x
D x 1 vector. D dimensional context feature vector
t
Current time index
Returns
-------
int
arm index for the current parameter and context set_with_var
"""
# estimate!
a_forced = self.is_in_forced_sample_set(t)
if a_forced == -1:
K_hat = []
for a in range(self.K):
if x.T.dot(self.beta_hat_1[a]) > np.max(
[x.T.dot(self.beta_hat_1[a]) for a in range(self.K)]) - self.h / 2:
K_hat.append(a)
p_t = np.zeros(self.K)
for a in range(self.K):
p_t[a] = x.T.dot(self.beta_hat_2[a])
a_t = np.argmax(p_t[K_hat])
else:
a_t = a_forced
return a_t
def update_params(self, X_t, r_t, a_t, t):
"""Updates the parameters.
Parameters
----------
X_t
D dimensional context feature vector
r_t
last achieved reward when playing action a_t
a_t
last played arm
t
Current time index
"""
self.X = np.append(self.X, X_t.reshape(1, self.D), axis=0)
self.y = np.append(self.y, r_t)
self.S_a[a_t] = np.append(self.S_a[a_t], t)
self.lambda_2 = self.lambda_2_0 * np.sqrt((np.log(t + 1) + np.log(self.D)) / (t + 1))
# estimate beta_hat_1, beta_hat_2
for a in range(self.K):
idx = self.T_a[a]
idx = idx[idx <= t]
# TODO: Check for initialization of sklearn lasso
if np.size(idx) > 0:
reg_lasso_1 = lm.Lasso(alpha=self.lambda_1, fit_intercept=False)
reg_lasso_1.fit(self.X[idx, :], self.y[idx])
self.beta_hat_1[a] = reg_lasso_1.coef_
idx = np.int8(self.S_a[a_t])
if np.size(idx) > 0:
reg_lasso_2 = lm.Lasso(alpha=self.lambda_2, fit_intercept=False)
reg_lasso_2.fit(self.X[idx, :], self.y[idx])
self.beta_hat_2[a_t] = reg_lasso_2.coef_
def is_in_forced_sample_set(self, t):
"""Checks if the time index is in the forced sample set_with_var.
Parameters
----------
t: int
Current time index
Returns
-------
a_out: int
arm index for the corresponding forced sample set_with_var.
-1 if not in forced sample set_with_var
"""
# noinspection PyTypeChecker
while t > max(max(self.T_a, key=tuple)):
self.n = self.n + 1
for a in range(self.K):
self.T_a[a] = np.append(self.T_a[a], (2 ** self.n - 1) * self.K * self.q + self.j_a[a])
a_out = -1
for a in range(self.K):
if np.isin(t, self.T_a[a]):
a_out = a
return a_out
| 4,821 | 30.723684 | 103 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/packages/banditAlgorithms/SparseBayesUcb.py
|
import numpy as np
from packages.sparseEstimation.GbRegression import GbRegression as Gb
from scipy.special import erfinv
# This is relative straight forward
class SparseBayesUcb(object):
"""Creates a bandit object which uses the gb contextual bandit algorithm with batch variational bayes.
"""
def __init__(self, D, K, a, b, c_0, d_0):
"""Initializes a GB contextual bandit object
Parameters
----------
D : int
Dimension of the context features
K : int
Number of arms
a : float
hyper parameter for the TPBN
b : float
hyper parameter for the TPBN
c_0 : float
hyper parameter for the TPBN
d_0 : float
hyper parameter for the TPBN
"""
self.D = D
self.K = K
self.GbObj = [Gb(a, b, c_0, d_0, D) for _ in range(K)]
self.X = [np.array([]).reshape(0, D)] * K
self.y = [np.array([]).reshape(0, 1)] * K
self.beta_t = 1e6
def get_opt_action(self, x_a):
"""Calculates SparseBayesUcb action.
Parameters
----------
x_a
D x K matrix. D dimensional context feature vector for each arm a in (1,...,K)
Returns
-------
int
arm index for the current parameter and context set_with_var
"""
# estimate!
mu = np.zeros(self.K)
sigma = np.zeros(self.K)
for a in range(self.K):
(mu[a], sigma[a]) = self.GbObj[a].predict(x_a[:, a], return_std=True)
a_t = np.argmax(mu + self.beta_t * sigma)
return a_t
def update_params(self, x_a, r_t, a_t, t):
"""Updates the parameters.
Parameters
----------
x_a
D x K matrix. D dimensional context feature vector for each arm a in (1,...,K)
r_t
last achieved reward when playing action a_t
a_t
last played arm
t
time index of the bandit process
"""
self.X[a_t] = np.append(self.X[a_t], x_a[:, a_t].reshape(1, -1), axis=0).reshape(-1, self.D)
self.y[a_t] = np.append(self.y[a_t], r_t).reshape(-1, 1)
self.GbObj[a_t].fit(self.X[a_t], self.y[a_t])
self.beta_t = np.sqrt(2) * erfinv(1 - 2 / (t + 1))
| 2,694 | 31.865854 | 106 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/packages/banditAlgorithms/SparseBayesUcbSvi.py
|
import numpy as np
from packages.sparseEstimation.GbRegression import GbRegression as Gb
from scipy.special import erfinv
# This should be a bit more accurate because of the ability of the stochastic gradient to jump out of local optima
class SparseBayesUcbSvi(object):
"""Creates a bandit object which uses the gb contextual bandit algorithm with stochastic variational inference.
"""
def __init__(self, D, K, a, b, c_0, d_0):
"""Initializes a GB contextual bandit object
Parameters
----------
D : int
Dimension of the context features
K : int
Number of arms
a : float
hyper parameter for the TPBN
b : float
hyper parameter for the TPBN
c_0 : float
hyper parameter for the TPBN
d_0 : float
hyper parameter for the TPBN
"""
self.D = D
self.K = K
self.GbObj = [Gb(a, b, c_0, d_0, D) for _ in range(K)]
self.X = [np.array([]).reshape(0, D)] * K
self.y = [np.array([]).reshape(0, 1)] * K
self.beta_t = 1e6
def get_opt_action(self, x_a):
"""Calculates SparseBayesUcb action.
Parameters
----------
x_a
D x K matrix. D dimensional context feature vector for each arm a in (1,...,K)
Returns
-------
int
arm index for the current parameter and context set_with_var
"""
# estimate!
mu = np.zeros(self.K)
sigma = np.zeros(self.K)
for a in range(self.K):
(mu[a], sigma[a]) = self.GbObj[a].predict(x_a[:, a], return_std=True)
a_t = np.argmax(mu + self.beta_t * sigma)
return a_t
def update_params(self, x_a, r_t, a_t, t):
"""Updates the parameters.
Parameters
----------
x_a
D x K matrix. D dimensional context feature vector for each arm a in (1,...,K)
r_t
last achieved reward when playing action a_t
a_t
last played arm
t
time index of the bandit process
"""
self.X[a_t] = np.append(self.X[a_t], x_a[:, a_t].reshape(1, -1), axis=0).reshape(-1, self.D)
self.y[a_t] = np.append(self.y[a_t], r_t).reshape(-1, 1)
self.GbObj[a_t].fit_svi(self.X[a_t], self.y[a_t])
self.beta_t = np.sqrt(2) * erfinv(1 - 2 / (t + 1))
| 2,789 | 33.02439 | 115 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/packages/banditAlgorithms/LinucbBandit.py
|
import numpy as np
from scipy.linalg import *
class LinucbBandit(object):
"""Creates a bandit object which uses the linucb algorithm.
(https://arxiv.org/pdf/1003.0146.pdf)
"""
def __init__(self, D, K, alpha):
"""Initializes a linucb contextual bandit object
Parameters
----------
D : int
Dimension of the context features
K : int
Number of arms
alpha:
confidence bound width parameter
"""
self.D = D
self.K = K
self.alpha = alpha
# initialization
self.A_a = [np.eye(D)] * K
self.A_a_inv = self.A_a
self.b_a = [np.zeros((D, 1))] * K
self.theta_a = [np.zeros((D, 1))] * K
def get_opt_action(self, x_a):
"""Calculates linucb action.
Parameters
----------
x_a
D x K matrix. D dimensional context feature vector for each arm a in (1,...,K)
Returns
-------
int
arm index for the current parameter and context set_with_var
"""
# estimate!
for a in range(self.K):
self.theta_a[a] = self.A_a_inv[a].dot(self.b_a[a])
p_t = np.zeros(self.K)
for a in range(self.K):
p_t[a] = self.theta_a[a].T.dot(x_a[:, a].reshape(-1, 1)) \
+ self.alpha * np.sqrt(
x_a[:, a].reshape(-1, 1).T.dot(self.A_a_inv[a].dot(x_a[:, a].reshape(-1, 1))))
a_t = np.argmax(p_t)
return a_t
def update_params(self, x_a, r_t, a_t):
"""Updates the linucb parameters.
Parameters
----------
x_a
D x K matrix. D dimensional context feature vector for each arm a in (1,...,K)
r_t
last achieved reward when playing action a_t
a_t
last played arm
"""
self.A_a[a_t] = self.A_a[a_t] + x_a[:, a_t].reshape(-1, 1).dot(x_a[:, a_t].reshape(-1, 1).T)
self.A_a_inv[a_t] = inv(self.A_a[a_t])
self.b_a[a_t] = self.b_a[a_t] + x_a[:, a_t].reshape(-1, 1) * r_t
| 2,388 | 29.240506 | 106 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/packages/banditAlgorithms/HybridLinucbBandit.py
|
import numpy as np
from scipy.linalg import *
class HybridLinucbBandit(object):
"""Creates a bandit object which uses the hybrid linucb algorithm.
(https://arxiv.org/pdf/1003.0146.pdf)
"""
def __init__(self, D, K, k_indp, alpha):
"""Initializes a hybrid linucb contextual bandit object
Parameters
----------
D : int
Dimension of the arm dependent context features
K : int
Number of arms
k_indp : int
Dimension of the arm independent context features
alpha:
confidence bound width parameter
"""
self.D = D
self.K = K
self.k = k_indp
# initialization
self.A_0 = np.eye(k_indp)
self.b_0 = np.zeros((k_indp, 1))
self.A_a = [np.eye(D)] * K
self.A_a_inv = self.A_a
self.B_a = [np.zeros((D, k_indp))] * K
self.b_a = [np.zeros((D, 1))] * K
self.alpha = alpha
def get_opt_action(self, x_a, z_a):
"""Calculates action.
Parameters
----------
x_a
D x K matrix. D dimensional arm dependent context feature vector for each arm a in (1,...,K)
z_a
k x K matrix. k dimensional arm independent context feature vector for each arm a in (1,...,K)
Returns
-------
int
arm index for the current parameter and context set_with_var
"""
# estimate!
A_0_inv = inv(self.A_0)
beta_hat = A_0_inv.dot(self.b_0)
theta_a_hat = [np.zeros((self.D, 1))] * self.K
s_a = np.zeros((self.K, 1))
p_t_a = np.zeros((self.K, 1))
for a in range(self.K):
theta_a_hat[a] = self.A_a_inv[a].dot(self.b_a[a] - self.B_a[a].dot(beta_hat))
s_a[a] = (z_a[:, a].reshape(-1, 1).T.dot(A_0_inv).dot(z_a[:, a].reshape(-1, 1))
- 2 * z_a[:, a].reshape(-1, 1).T.dot(A_0_inv).dot(self.B_a[a].T).dot(self.A_a_inv[a]).dot(
x_a[:, a].reshape(-1, 1))
+ x_a[:, a].reshape(-1, 1).T.dot(self.A_a_inv[a]).dot(x_a[:, a].reshape(-1, 1))
+ x_a[:, a].reshape(-1, 1).T.dot(self.A_a_inv[a]).dot(self.B_a[a]).dot(A_0_inv).dot(
self.B_a[a].T).dot(
self.A_a_inv[a]).dot(x_a[:, a].reshape(-1, 1)))
p_t_a[a] = z_a[:, a].reshape(-1, 1).T.dot(beta_hat) + x_a[:, a].reshape(-1, 1).T.dot(
theta_a_hat[a]) + self.alpha * np.sqrt(
s_a[a])
a_t = np.argmax(p_t_a)
return a_t
def update_params(self, x_a, z_a, r_t, a_t):
"""Updates the parameters.
Parameters
----------
x_a
D x K matrix. D dimensional arm dependent context feature vector for each arm a in (1,...,K)
z_a
k x K matrix. k dimensional arm independent context feature vector for each arm a in (1,...,K)
r_t
last achieved reward when playing action a_t
a_t
last played arm
"""
x_a_t = x_a[:, a_t].reshape(-1, 1)
z_a_t = z_a[:, a_t].reshape(-1, 1)
self.A_0 = self.A_0 + self.B_a[a_t].T.dot(self.A_a_inv[a_t]).dot(self.B_a[a_t])
self.b_0 = self.b_0 + self.B_a[a_t].T.dot(self.A_a_inv[a_t]).dot(self.b_a[a_t])
self.A_a[a_t] = self.A_a[a_t] + x_a_t.dot(x_a_t.T)
self.A_a_inv[a_t] = inv(self.A_a[a_t])
self.B_a[a_t] = self.B_a[a_t] + x_a_t.dot(z_a_t.T)
self.b_a[a_t] = self.b_a[a_t] + r_t * x_a_t
self.A_0 = self.A_0 + z_a_t.dot(z_a_t.T) - self.B_a[a_t].T.dot(self.A_a_inv[a_t]).dot(
self.B_a[a_t])
self.b_0 = self.b_0 + r_t * z_a_t - self.B_a[a_t].T.dot(self.A_a_inv[a_t]).dot(self.b_a[a_t])
| 4,146 | 36.36036 | 114 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/packages/banditAlgorithms/__init__.py
|
"""banditAlgorithms module with multiple contextual bandit algorithms.
Example
-------
Implemented Algorithms
----------------------
"""
from packages.banditAlgorithms import HybridLinucbBandit
from packages.banditAlgorithms import LinucbBandit
from packages.banditAlgorithms import LassoBandit
from packages.banditAlgorithms import GpBandit
from packages.banditAlgorithms import SparseBayesUcb
from packages.banditAlgorithms import SparseBayesUcbSvi
from packages.banditAlgorithms import SparseBayesUcbOse
__all__ = ["HybridLinucbBandit.py", "LinucbBandit.py", "LassoBandit.py", "GpBandit.py", "SparseBayesUcb.py",
"SparseBayesUcbSvi.py", "SparseBayesUcbOse.py"]
| 679 | 33 | 108 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/packages/banditAlgorithms/SparseBayesUcbOse.py
|
import numpy as np
from packages.sparseEstimation.GbRegression import GbRegression as Gb
from scipy.special import erfinv
# This should be very fast because it does not store the design matrix,
# and does not need to compute large linear products
class SparseBayesUcbOse(object):
"""Creates a bandit object which uses the gb contextual bandit algorithm with one sample estimate.
"""
def __init__(self, D, K, a, b, c_0, d_0):
"""Initializes a GB contextual bandit object
Parameters
----------
D : int
Dimension of the context features
K : int
Number of arms
a : float
hyper parameter for the TPBN
b : float
hyper parameter for the TPBN
c_0 : float
hyper parameter for the TPBN
d_0 : float
hyper parameter for the TPBN
"""
self.D = D
self.K = K
self.GbObj = [Gb(a, b, c_0, d_0, D) for _ in range(K)]
self.N = [np.zeros(1)] * K
# self.X = [np.array([]).reshape(0, D)] * K
# self.y = [np.array([]).reshape(0, 1)] * K
self.beta_t = 1e6
def get_opt_action(self, x_a):
"""Calculates SparseBayesUcb action.
Parameters
----------
x_a
D x K matrix. D dimensional context feature vector for each arm a in (1,...,K)
Returns
-------
int
arm index for the current parameter and context set_with_var
"""
# estimate!
mu = np.zeros(self.K)
sigma = np.zeros(self.K)
for a in range(self.K):
(mu[a], sigma[a]) = self.GbObj[a].predict(x_a[:, a], return_std=True)
a_t = np.argmax(mu + self.beta_t * sigma)
return a_t
def update_params(self, x_a, r_t, a_t, t):
"""Updates the parameters.
Parameters
----------
x_a
D x K matrix. D dimensional context feature vector for each arm a in (1,...,K)
r_t
last achieved reward when playing action a_t
a_t
last played arm
t
time index of the bandit process
"""
self.N[a_t] = self.N[a_t] + 1
tau = 0
kappa = 1
rho_t_a_t = (self.N[a_t] + tau) ** (-kappa)
self.GbObj[a_t].svi_update(x_a[:, a_t].reshape(1, -1), np.array(r_t).reshape(-1, 1), rho_t_a_t, self.N[a_t])
self.beta_t = np.sqrt(2) * erfinv(1 - 2 / (t + 1))
| 2,844 | 31.329545 | 116 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/venv/lib/python3.6/site-packages/six.py
|
# Copyright (c) 2010-2017 Benjamin Peterson
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
"""Utilities for writing code that runs on Python 2 and 3"""
from __future__ import absolute_import
import functools
import itertools
import operator
import sys
import types
__author__ = "Benjamin Peterson <[email protected]>"
__version__ = "1.11.0"
# Useful for very coarse version differentiation.
PY2 = sys.version_info[0] == 2
PY3 = sys.version_info[0] == 3
PY34 = sys.version_info[0:2] >= (3, 4)
if PY3:
string_types = str,
integer_types = int,
class_types = type,
text_type = str
binary_type = bytes
MAXSIZE = sys.maxsize
else:
string_types = basestring,
integer_types = (int, long)
class_types = (type, types.ClassType)
text_type = unicode
binary_type = str
if sys.platform.startswith("java"):
# Jython always uses 32 bits.
MAXSIZE = int((1 << 31) - 1)
else:
# It's possible to have sizeof(long) != sizeof(Py_ssize_t).
class X(object):
def __len__(self):
return 1 << 31
try:
len(X())
except OverflowError:
# 32-bit
MAXSIZE = int((1 << 31) - 1)
else:
# 64-bit
MAXSIZE = int((1 << 63) - 1)
del X
def _add_doc(func, doc):
"""Add documentation to a function."""
func.__doc__ = doc
def _import_module(name):
"""Import module, returning the module after the last dot."""
__import__(name)
return sys.modules[name]
class _LazyDescr(object):
def __init__(self, name):
self.name = name
def __get__(self, obj, tp):
result = self._resolve()
setattr(obj, self.name, result) # Invokes __set__.
try:
# This is a bit ugly, but it avoids running this again by
# removing this descriptor.
delattr(obj.__class__, self.name)
except AttributeError:
pass
return result
class MovedModule(_LazyDescr):
def __init__(self, name, old, new=None):
super(MovedModule, self).__init__(name)
if PY3:
if new is None:
new = name
self.mod = new
else:
self.mod = old
def _resolve(self):
return _import_module(self.mod)
def __getattr__(self, attr):
_module = self._resolve()
value = getattr(_module, attr)
setattr(self, attr, value)
return value
class _LazyModule(types.ModuleType):
def __init__(self, name):
super(_LazyModule, self).__init__(name)
self.__doc__ = self.__class__.__doc__
def __dir__(self):
attrs = ["__doc__", "__name__"]
attrs += [attr.name for attr in self._moved_attributes]
return attrs
# Subclasses should override this
_moved_attributes = []
class MovedAttribute(_LazyDescr):
def __init__(self, name, old_mod, new_mod, old_attr=None, new_attr=None):
super(MovedAttribute, self).__init__(name)
if PY3:
if new_mod is None:
new_mod = name
self.mod = new_mod
if new_attr is None:
if old_attr is None:
new_attr = name
else:
new_attr = old_attr
self.attr = new_attr
else:
self.mod = old_mod
if old_attr is None:
old_attr = name
self.attr = old_attr
def _resolve(self):
module = _import_module(self.mod)
return getattr(module, self.attr)
class _SixMetaPathImporter(object):
"""
A meta path importer to import six.moves and its submodules.
This class implements a PEP302 finder and loader. It should be compatible
with Python 2.5 and all existing versions of Python3
"""
def __init__(self, six_module_name):
self.name = six_module_name
self.known_modules = {}
def _add_module(self, mod, *fullnames):
for fullname in fullnames:
self.known_modules[self.name + "." + fullname] = mod
def _get_module(self, fullname):
return self.known_modules[self.name + "." + fullname]
def find_module(self, fullname, path=None):
if fullname in self.known_modules:
return self
return None
def __get_module(self, fullname):
try:
return self.known_modules[fullname]
except KeyError:
raise ImportError("This loader does not know module " + fullname)
def load_module(self, fullname):
try:
# in case of a reload
return sys.modules[fullname]
except KeyError:
pass
mod = self.__get_module(fullname)
if isinstance(mod, MovedModule):
mod = mod._resolve()
else:
mod.__loader__ = self
sys.modules[fullname] = mod
return mod
def is_package(self, fullname):
"""
Return true, if the named module is a package.
We need this method to get correct spec objects with
Python 3.4 (see PEP451)
"""
return hasattr(self.__get_module(fullname), "__path__")
def get_code(self, fullname):
"""Return None
Required, if is_package is implemented"""
self.__get_module(fullname) # eventually raises ImportError
return None
get_source = get_code # same as get_code
_importer = _SixMetaPathImporter(__name__)
class _MovedItems(_LazyModule):
"""Lazy loading of moved objects"""
__path__ = [] # mark as package
_moved_attributes = [
MovedAttribute("cStringIO", "cStringIO", "io", "StringIO"),
MovedAttribute("filter", "itertools", "builtins", "ifilter", "filter"),
MovedAttribute("filterfalse", "itertools", "itertools", "ifilterfalse", "filterfalse"),
MovedAttribute("input", "__builtin__", "builtins", "raw_input", "input"),
MovedAttribute("intern", "__builtin__", "sys"),
MovedAttribute("map", "itertools", "builtins", "imap", "map"),
MovedAttribute("getcwd", "os", "os", "getcwdu", "getcwd"),
MovedAttribute("getcwdb", "os", "os", "getcwd", "getcwdb"),
MovedAttribute("getoutput", "commands", "subprocess"),
MovedAttribute("range", "__builtin__", "builtins", "xrange", "range"),
MovedAttribute("reload_module", "__builtin__", "importlib" if PY34 else "imp", "reload"),
MovedAttribute("reduce", "__builtin__", "functools"),
MovedAttribute("shlex_quote", "pipes", "shlex", "quote"),
MovedAttribute("StringIO", "StringIO", "io"),
MovedAttribute("UserDict", "UserDict", "collections"),
MovedAttribute("UserList", "UserList", "collections"),
MovedAttribute("UserString", "UserString", "collections"),
MovedAttribute("xrange", "__builtin__", "builtins", "xrange", "range"),
MovedAttribute("zip", "itertools", "builtins", "izip", "zip"),
MovedAttribute("zip_longest", "itertools", "itertools", "izip_longest", "zip_longest"),
MovedModule("builtins", "__builtin__"),
MovedModule("configparser", "ConfigParser"),
MovedModule("copyreg", "copy_reg"),
MovedModule("dbm_gnu", "gdbm", "dbm.gnu"),
MovedModule("_dummy_thread", "dummy_thread", "_dummy_thread"),
MovedModule("http_cookiejar", "cookielib", "http.cookiejar"),
MovedModule("http_cookies", "Cookie", "http.cookies"),
MovedModule("html_entities", "htmlentitydefs", "html.entities"),
MovedModule("html_parser", "HTMLParser", "html.parser"),
MovedModule("http_client", "httplib", "http.client"),
MovedModule("email_mime_base", "email.MIMEBase", "email.mime.base"),
MovedModule("email_mime_image", "email.MIMEImage", "email.mime.image"),
MovedModule("email_mime_multipart", "email.MIMEMultipart", "email.mime.multipart"),
MovedModule("email_mime_nonmultipart", "email.MIMENonMultipart", "email.mime.nonmultipart"),
MovedModule("email_mime_text", "email.MIMEText", "email.mime.text"),
MovedModule("BaseHTTPServer", "BaseHTTPServer", "http.server"),
MovedModule("CGIHTTPServer", "CGIHTTPServer", "http.server"),
MovedModule("SimpleHTTPServer", "SimpleHTTPServer", "http.server"),
MovedModule("cPickle", "cPickle", "pickle"),
MovedModule("queue", "Queue"),
MovedModule("reprlib", "repr"),
MovedModule("socketserver", "SocketServer"),
MovedModule("_thread", "thread", "_thread"),
MovedModule("tkinter", "Tkinter"),
MovedModule("tkinter_dialog", "Dialog", "tkinter.dialog"),
MovedModule("tkinter_filedialog", "FileDialog", "tkinter.filedialog"),
MovedModule("tkinter_scrolledtext", "ScrolledText", "tkinter.scrolledtext"),
MovedModule("tkinter_simpledialog", "SimpleDialog", "tkinter.simpledialog"),
MovedModule("tkinter_tix", "Tix", "tkinter.tix"),
MovedModule("tkinter_ttk", "ttk", "tkinter.ttk"),
MovedModule("tkinter_constants", "Tkconstants", "tkinter.constants"),
MovedModule("tkinter_dnd", "Tkdnd", "tkinter.dnd"),
MovedModule("tkinter_colorchooser", "tkColorChooser",
"tkinter.colorchooser"),
MovedModule("tkinter_commondialog", "tkCommonDialog",
"tkinter.commondialog"),
MovedModule("tkinter_tkfiledialog", "tkFileDialog", "tkinter.filedialog"),
MovedModule("tkinter_font", "tkFont", "tkinter.font"),
MovedModule("tkinter_messagebox", "tkMessageBox", "tkinter.messagebox"),
MovedModule("tkinter_tksimpledialog", "tkSimpleDialog",
"tkinter.simpledialog"),
MovedModule("urllib_parse", __name__ + ".moves.urllib_parse", "urllib.parse"),
MovedModule("urllib_error", __name__ + ".moves.urllib_error", "urllib.error"),
MovedModule("urllib", __name__ + ".moves.urllib", __name__ + ".moves.urllib"),
MovedModule("urllib_robotparser", "robotparser", "urllib.robotparser"),
MovedModule("xmlrpc_client", "xmlrpclib", "xmlrpc.client"),
MovedModule("xmlrpc_server", "SimpleXMLRPCServer", "xmlrpc.server"),
]
# Add windows specific modules.
if sys.platform == "win32":
_moved_attributes += [
MovedModule("winreg", "_winreg"),
]
for attr in _moved_attributes:
setattr(_MovedItems, attr.name, attr)
if isinstance(attr, MovedModule):
_importer._add_module(attr, "moves." + attr.name)
del attr
_MovedItems._moved_attributes = _moved_attributes
moves = _MovedItems(__name__ + ".moves")
_importer._add_module(moves, "moves")
class Module_six_moves_urllib_parse(_LazyModule):
"""Lazy loading of moved objects in six.moves.urllib_parse"""
_urllib_parse_moved_attributes = [
MovedAttribute("ParseResult", "urlparse", "urllib.parse"),
MovedAttribute("SplitResult", "urlparse", "urllib.parse"),
MovedAttribute("parse_qs", "urlparse", "urllib.parse"),
MovedAttribute("parse_qsl", "urlparse", "urllib.parse"),
MovedAttribute("urldefrag", "urlparse", "urllib.parse"),
MovedAttribute("urljoin", "urlparse", "urllib.parse"),
MovedAttribute("urlparse", "urlparse", "urllib.parse"),
MovedAttribute("urlsplit", "urlparse", "urllib.parse"),
MovedAttribute("urlunparse", "urlparse", "urllib.parse"),
MovedAttribute("urlunsplit", "urlparse", "urllib.parse"),
MovedAttribute("quote", "urllib", "urllib.parse"),
MovedAttribute("quote_plus", "urllib", "urllib.parse"),
MovedAttribute("unquote", "urllib", "urllib.parse"),
MovedAttribute("unquote_plus", "urllib", "urllib.parse"),
MovedAttribute("unquote_to_bytes", "urllib", "urllib.parse", "unquote", "unquote_to_bytes"),
MovedAttribute("urlencode", "urllib", "urllib.parse"),
MovedAttribute("splitquery", "urllib", "urllib.parse"),
MovedAttribute("splittag", "urllib", "urllib.parse"),
MovedAttribute("splituser", "urllib", "urllib.parse"),
MovedAttribute("splitvalue", "urllib", "urllib.parse"),
MovedAttribute("uses_fragment", "urlparse", "urllib.parse"),
MovedAttribute("uses_netloc", "urlparse", "urllib.parse"),
MovedAttribute("uses_params", "urlparse", "urllib.parse"),
MovedAttribute("uses_query", "urlparse", "urllib.parse"),
MovedAttribute("uses_relative", "urlparse", "urllib.parse"),
]
for attr in _urllib_parse_moved_attributes:
setattr(Module_six_moves_urllib_parse, attr.name, attr)
del attr
Module_six_moves_urllib_parse._moved_attributes = _urllib_parse_moved_attributes
_importer._add_module(Module_six_moves_urllib_parse(__name__ + ".moves.urllib_parse"),
"moves.urllib_parse", "moves.urllib.parse")
class Module_six_moves_urllib_error(_LazyModule):
"""Lazy loading of moved objects in six.moves.urllib_error"""
_urllib_error_moved_attributes = [
MovedAttribute("URLError", "urllib2", "urllib.error"),
MovedAttribute("HTTPError", "urllib2", "urllib.error"),
MovedAttribute("ContentTooShortError", "urllib", "urllib.error"),
]
for attr in _urllib_error_moved_attributes:
setattr(Module_six_moves_urllib_error, attr.name, attr)
del attr
Module_six_moves_urllib_error._moved_attributes = _urllib_error_moved_attributes
_importer._add_module(Module_six_moves_urllib_error(__name__ + ".moves.urllib.error"),
"moves.urllib_error", "moves.urllib.error")
class Module_six_moves_urllib_request(_LazyModule):
"""Lazy loading of moved objects in six.moves.urllib_request"""
_urllib_request_moved_attributes = [
MovedAttribute("urlopen", "urllib2", "urllib.request"),
MovedAttribute("install_opener", "urllib2", "urllib.request"),
MovedAttribute("build_opener", "urllib2", "urllib.request"),
MovedAttribute("pathname2url", "urllib", "urllib.request"),
MovedAttribute("url2pathname", "urllib", "urllib.request"),
MovedAttribute("getproxies", "urllib", "urllib.request"),
MovedAttribute("Request", "urllib2", "urllib.request"),
MovedAttribute("OpenerDirector", "urllib2", "urllib.request"),
MovedAttribute("HTTPDefaultErrorHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPRedirectHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPCookieProcessor", "urllib2", "urllib.request"),
MovedAttribute("ProxyHandler", "urllib2", "urllib.request"),
MovedAttribute("BaseHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPPasswordMgr", "urllib2", "urllib.request"),
MovedAttribute("HTTPPasswordMgrWithDefaultRealm", "urllib2", "urllib.request"),
MovedAttribute("AbstractBasicAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPBasicAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("ProxyBasicAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("AbstractDigestAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPDigestAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("ProxyDigestAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPSHandler", "urllib2", "urllib.request"),
MovedAttribute("FileHandler", "urllib2", "urllib.request"),
MovedAttribute("FTPHandler", "urllib2", "urllib.request"),
MovedAttribute("CacheFTPHandler", "urllib2", "urllib.request"),
MovedAttribute("UnknownHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPErrorProcessor", "urllib2", "urllib.request"),
MovedAttribute("urlretrieve", "urllib", "urllib.request"),
MovedAttribute("urlcleanup", "urllib", "urllib.request"),
MovedAttribute("URLopener", "urllib", "urllib.request"),
MovedAttribute("FancyURLopener", "urllib", "urllib.request"),
MovedAttribute("proxy_bypass", "urllib", "urllib.request"),
MovedAttribute("parse_http_list", "urllib2", "urllib.request"),
MovedAttribute("parse_keqv_list", "urllib2", "urllib.request"),
]
for attr in _urllib_request_moved_attributes:
setattr(Module_six_moves_urllib_request, attr.name, attr)
del attr
Module_six_moves_urllib_request._moved_attributes = _urllib_request_moved_attributes
_importer._add_module(Module_six_moves_urllib_request(__name__ + ".moves.urllib.request"),
"moves.urllib_request", "moves.urllib.request")
class Module_six_moves_urllib_response(_LazyModule):
"""Lazy loading of moved objects in six.moves.urllib_response"""
_urllib_response_moved_attributes = [
MovedAttribute("addbase", "urllib", "urllib.response"),
MovedAttribute("addclosehook", "urllib", "urllib.response"),
MovedAttribute("addinfo", "urllib", "urllib.response"),
MovedAttribute("addinfourl", "urllib", "urllib.response"),
]
for attr in _urllib_response_moved_attributes:
setattr(Module_six_moves_urllib_response, attr.name, attr)
del attr
Module_six_moves_urllib_response._moved_attributes = _urllib_response_moved_attributes
_importer._add_module(Module_six_moves_urllib_response(__name__ + ".moves.urllib.response"),
"moves.urllib_response", "moves.urllib.response")
class Module_six_moves_urllib_robotparser(_LazyModule):
"""Lazy loading of moved objects in six.moves.urllib_robotparser"""
_urllib_robotparser_moved_attributes = [
MovedAttribute("RobotFileParser", "robotparser", "urllib.robotparser"),
]
for attr in _urllib_robotparser_moved_attributes:
setattr(Module_six_moves_urllib_robotparser, attr.name, attr)
del attr
Module_six_moves_urllib_robotparser._moved_attributes = _urllib_robotparser_moved_attributes
_importer._add_module(Module_six_moves_urllib_robotparser(__name__ + ".moves.urllib.robotparser"),
"moves.urllib_robotparser", "moves.urllib.robotparser")
class Module_six_moves_urllib(types.ModuleType):
"""Create a six.moves.urllib namespace that resembles the Python 3 namespace"""
__path__ = [] # mark as package
parse = _importer._get_module("moves.urllib_parse")
error = _importer._get_module("moves.urllib_error")
request = _importer._get_module("moves.urllib_request")
response = _importer._get_module("moves.urllib_response")
robotparser = _importer._get_module("moves.urllib_robotparser")
def __dir__(self):
return ['parse', 'error', 'request', 'response', 'robotparser']
_importer._add_module(Module_six_moves_urllib(__name__ + ".moves.urllib"),
"moves.urllib")
def add_move(move):
"""Add an item to six.moves."""
setattr(_MovedItems, move.name, move)
def remove_move(name):
"""Remove item from six.moves."""
try:
delattr(_MovedItems, name)
except AttributeError:
try:
del moves.__dict__[name]
except KeyError:
raise AttributeError("no such move, %r" % (name,))
if PY3:
_meth_func = "__func__"
_meth_self = "__self__"
_func_closure = "__closure__"
_func_code = "__code__"
_func_defaults = "__defaults__"
_func_globals = "__globals__"
else:
_meth_func = "im_func"
_meth_self = "im_self"
_func_closure = "func_closure"
_func_code = "func_code"
_func_defaults = "func_defaults"
_func_globals = "func_globals"
try:
advance_iterator = next
except NameError:
def advance_iterator(it):
return it.next()
next = advance_iterator
try:
callable = callable
except NameError:
def callable(obj):
return any("__call__" in klass.__dict__ for klass in type(obj).__mro__)
if PY3:
def get_unbound_function(unbound):
return unbound
create_bound_method = types.MethodType
def create_unbound_method(func, cls):
return func
Iterator = object
else:
def get_unbound_function(unbound):
return unbound.im_func
def create_bound_method(func, obj):
return types.MethodType(func, obj, obj.__class__)
def create_unbound_method(func, cls):
return types.MethodType(func, None, cls)
class Iterator(object):
def next(self):
return type(self).__next__(self)
callable = callable
_add_doc(get_unbound_function,
"""Get the function out of a possibly unbound function""")
get_method_function = operator.attrgetter(_meth_func)
get_method_self = operator.attrgetter(_meth_self)
get_function_closure = operator.attrgetter(_func_closure)
get_function_code = operator.attrgetter(_func_code)
get_function_defaults = operator.attrgetter(_func_defaults)
get_function_globals = operator.attrgetter(_func_globals)
if PY3:
def iterkeys(d, **kw):
return iter(d.keys(**kw))
def itervalues(d, **kw):
return iter(d.values(**kw))
def iteritems(d, **kw):
return iter(d.items(**kw))
def iterlists(d, **kw):
return iter(d.lists(**kw))
viewkeys = operator.methodcaller("keys")
viewvalues = operator.methodcaller("values")
viewitems = operator.methodcaller("items")
else:
def iterkeys(d, **kw):
return d.iterkeys(**kw)
def itervalues(d, **kw):
return d.itervalues(**kw)
def iteritems(d, **kw):
return d.iteritems(**kw)
def iterlists(d, **kw):
return d.iterlists(**kw)
viewkeys = operator.methodcaller("viewkeys")
viewvalues = operator.methodcaller("viewvalues")
viewitems = operator.methodcaller("viewitems")
_add_doc(iterkeys, "Return an iterator over the keys of a dictionary.")
_add_doc(itervalues, "Return an iterator over the values of a dictionary.")
_add_doc(iteritems,
"Return an iterator over the (key, value) pairs of a dictionary.")
_add_doc(iterlists,
"Return an iterator over the (key, [values]) pairs of a dictionary.")
if PY3:
def b(s):
return s.encode("latin-1")
def u(s):
return s
unichr = chr
import struct
int2byte = struct.Struct(">B").pack
del struct
byte2int = operator.itemgetter(0)
indexbytes = operator.getitem
iterbytes = iter
import io
StringIO = io.StringIO
BytesIO = io.BytesIO
_assertCountEqual = "assertCountEqual"
if sys.version_info[1] <= 1:
_assertRaisesRegex = "assertRaisesRegexp"
_assertRegex = "assertRegexpMatches"
else:
_assertRaisesRegex = "assertRaisesRegex"
_assertRegex = "assertRegex"
else:
def b(s):
return s
# Workaround for standalone backslash
def u(s):
return unicode(s.replace(r'\\', r'\\\\'), "unicode_escape")
unichr = unichr
int2byte = chr
def byte2int(bs):
return ord(bs[0])
def indexbytes(buf, i):
return ord(buf[i])
iterbytes = functools.partial(itertools.imap, ord)
import StringIO
StringIO = BytesIO = StringIO.StringIO
_assertCountEqual = "assertItemsEqual"
_assertRaisesRegex = "assertRaisesRegexp"
_assertRegex = "assertRegexpMatches"
_add_doc(b, """Byte literal""")
_add_doc(u, """Text literal""")
def assertCountEqual(self, *args, **kwargs):
return getattr(self, _assertCountEqual)(*args, **kwargs)
def assertRaisesRegex(self, *args, **kwargs):
return getattr(self, _assertRaisesRegex)(*args, **kwargs)
def assertRegex(self, *args, **kwargs):
return getattr(self, _assertRegex)(*args, **kwargs)
if PY3:
exec_ = getattr(moves.builtins, "exec")
def reraise(tp, value, tb=None):
try:
if value is None:
value = tp()
if value.__traceback__ is not tb:
raise value.with_traceback(tb)
raise value
finally:
value = None
tb = None
else:
def exec_(_code_, _globs_=None, _locs_=None):
"""Execute code in a namespace."""
if _globs_ is None:
frame = sys._getframe(1)
_globs_ = frame.f_globals
if _locs_ is None:
_locs_ = frame.f_locals
del frame
elif _locs_ is None:
_locs_ = _globs_
exec("""exec _code_ in _globs_, _locs_""")
exec_("""def reraise(tp, value, tb=None):
try:
raise tp, value, tb
finally:
tb = None
""")
if sys.version_info[:2] == (3, 2):
exec_("""def raise_from(value, from_value):
try:
if from_value is None:
raise value
raise value from from_value
finally:
value = None
""")
elif sys.version_info[:2] > (3, 2):
exec_("""def raise_from(value, from_value):
try:
raise value from from_value
finally:
value = None
""")
else:
def raise_from(value, from_value):
raise value
print_ = getattr(moves.builtins, "print", None)
if print_ is None:
def print_(*args, **kwargs):
"""The new-style print function for Python 2.4 and 2.5."""
fp = kwargs.pop("file", sys.stdout)
if fp is None:
return
def write(data):
if not isinstance(data, basestring):
data = str(data)
# If the file has an encoding, encode unicode with it.
if (isinstance(fp, file) and
isinstance(data, unicode) and
fp.encoding is not None):
errors = getattr(fp, "errors", None)
if errors is None:
errors = "strict"
data = data.encode(fp.encoding, errors)
fp.write(data)
want_unicode = False
sep = kwargs.pop("sep", None)
if sep is not None:
if isinstance(sep, unicode):
want_unicode = True
elif not isinstance(sep, str):
raise TypeError("sep must be None or a string")
end = kwargs.pop("end", None)
if end is not None:
if isinstance(end, unicode):
want_unicode = True
elif not isinstance(end, str):
raise TypeError("end must be None or a string")
if kwargs:
raise TypeError("invalid keyword arguments to print()")
if not want_unicode:
for arg in args:
if isinstance(arg, unicode):
want_unicode = True
break
if want_unicode:
newline = unicode("\n")
space = unicode(" ")
else:
newline = "\n"
space = " "
if sep is None:
sep = space
if end is None:
end = newline
for i, arg in enumerate(args):
if i:
write(sep)
write(arg)
write(end)
if sys.version_info[:2] < (3, 3):
_print = print_
def print_(*args, **kwargs):
fp = kwargs.get("file", sys.stdout)
flush = kwargs.pop("flush", False)
_print(*args, **kwargs)
if flush and fp is not None:
fp.flush()
_add_doc(reraise, """Reraise an exception.""")
if sys.version_info[0:2] < (3, 4):
def wraps(wrapped, assigned=functools.WRAPPER_ASSIGNMENTS,
updated=functools.WRAPPER_UPDATES):
def wrapper(f):
f = functools.wraps(wrapped, assigned, updated)(f)
f.__wrapped__ = wrapped
return f
return wrapper
else:
wraps = functools.wraps
def with_metaclass(meta, *bases):
"""Create a base class with a metaclass."""
# This requires a bit of explanation: the basic idea is to make a dummy
# metaclass for one level of class instantiation that replaces itself with
# the actual metaclass.
class metaclass(type):
def __new__(cls, name, this_bases, d):
return meta(name, bases, d)
@classmethod
def __prepare__(cls, name, this_bases):
return meta.__prepare__(name, bases)
return type.__new__(metaclass, 'temporary_class', (), {})
def add_metaclass(metaclass):
"""Class decorator for creating a class with a metaclass."""
def wrapper(cls):
orig_vars = cls.__dict__.copy()
slots = orig_vars.get('__slots__')
if slots is not None:
if isinstance(slots, str):
slots = [slots]
for slots_var in slots:
orig_vars.pop(slots_var)
orig_vars.pop('__dict__', None)
orig_vars.pop('__weakref__', None)
return metaclass(cls.__name__, cls.__bases__, orig_vars)
return wrapper
def python_2_unicode_compatible(klass):
"""
A decorator that defines __unicode__ and __str__ methods under Python 2.
Under Python 3 it does nothing.
To support Python 2 and 3 with a single code base, define a __str__ method
returning text and apply this decorator to the class.
"""
if PY2:
if '__str__' not in klass.__dict__:
raise ValueError("@python_2_unicode_compatible cannot be applied "
"to %s because it doesn't define __str__()." %
klass.__name__)
klass.__unicode__ = klass.__str__
klass.__str__ = lambda self: self.__unicode__().encode('utf-8')
return klass
# Complete the moves implementation.
# This code is at the end of this module to speed up module loading.
# Turn this module into a package.
__path__ = [] # required for PEP 302 and PEP 451
__package__ = __name__ # see PEP 366 @ReservedAssignment
if globals().get("__spec__") is not None:
__spec__.submodule_search_locations = [] # PEP 451 @UndefinedVariable
# Remove other six meta path importers, since they cause problems. This can
# happen if six is removed from sys.modules and then reloaded. (Setuptools does
# this for some reason.)
if sys.meta_path:
for i, importer in enumerate(sys.meta_path):
# Here's some real nastiness: Another "instance" of the six module might
# be floating around. Therefore, we can't use isinstance() to check for
# the six meta path importer, since the other six instance will have
# inserted an importer with different class.
if (type(importer).__name__ == "_SixMetaPathImporter" and
importer.name == __name__):
del sys.meta_path[i]
break
del i, importer
# Finally, add the importer to the meta path import hook.
sys.meta_path.append(_importer)
| 30,888 | 33.628924 | 98 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/venv/lib/python3.6/site-packages/pylab.py
|
from matplotlib.pylab import *
import matplotlib.pylab
__doc__ = matplotlib.pylab.__doc__
| 90 | 21.75 | 34 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/venv/lib/python3.6/site-packages/pyparsing.py
|
# module pyparsing.py
#
# Copyright (c) 2003-2016 Paul T. McGuire
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
__doc__ = \
"""
pyparsing module - Classes and methods to define and execute parsing grammars
The pyparsing module is an alternative approach to creating and executing simple grammars,
vs. the traditional lex/yacc approach, or the use of regular expressions. With pyparsing, you
don't need to learn a new syntax for defining grammars or matching expressions - the parsing module
provides a library of classes that you use to construct the grammar directly in Python.
Here is a program to parse "Hello, World!" (or any greeting of the form
C{"<salutation>, <addressee>!"}), built up using L{Word}, L{Literal}, and L{And} elements
(L{'+'<ParserElement.__add__>} operator gives L{And} expressions, strings are auto-converted to
L{Literal} expressions)::
from pyparsing import Word, alphas
# define grammar of a greeting
greet = Word(alphas) + "," + Word(alphas) + "!"
hello = "Hello, World!"
print (hello, "->", greet.parseString(hello))
The program outputs the following::
Hello, World! -> ['Hello', ',', 'World', '!']
The Python representation of the grammar is quite readable, owing to the self-explanatory
class names, and the use of '+', '|' and '^' operators.
The L{ParseResults} object returned from L{ParserElement.parseString<ParserElement.parseString>} can be accessed as a nested list, a dictionary, or an
object with named attributes.
The pyparsing module handles some of the problems that are typically vexing when writing text parsers:
- extra or missing whitespace (the above program will also handle "Hello,World!", "Hello , World !", etc.)
- quoted strings
- embedded comments
"""
__version__ = "2.2.0"
__versionTime__ = "06 Mar 2017 02:06 UTC"
__author__ = "Paul McGuire <[email protected]>"
import string
from weakref import ref as wkref
import copy
import sys
import warnings
import re
import sre_constants
import collections
import pprint
import traceback
import types
from datetime import datetime
try:
from _thread import RLock
except ImportError:
from threading import RLock
try:
from collections import OrderedDict as _OrderedDict
except ImportError:
try:
from ordereddict import OrderedDict as _OrderedDict
except ImportError:
_OrderedDict = None
#~ sys.stderr.write( "testing pyparsing module, version %s, %s\n" % (__version__,__versionTime__ ) )
__all__ = [
'And', 'CaselessKeyword', 'CaselessLiteral', 'CharsNotIn', 'Combine', 'Dict', 'Each', 'Empty',
'FollowedBy', 'Forward', 'GoToColumn', 'Group', 'Keyword', 'LineEnd', 'LineStart', 'Literal',
'MatchFirst', 'NoMatch', 'NotAny', 'OneOrMore', 'OnlyOnce', 'Optional', 'Or',
'ParseBaseException', 'ParseElementEnhance', 'ParseException', 'ParseExpression', 'ParseFatalException',
'ParseResults', 'ParseSyntaxException', 'ParserElement', 'QuotedString', 'RecursiveGrammarException',
'Regex', 'SkipTo', 'StringEnd', 'StringStart', 'Suppress', 'Token', 'TokenConverter',
'White', 'Word', 'WordEnd', 'WordStart', 'ZeroOrMore',
'alphanums', 'alphas', 'alphas8bit', 'anyCloseTag', 'anyOpenTag', 'cStyleComment', 'col',
'commaSeparatedList', 'commonHTMLEntity', 'countedArray', 'cppStyleComment', 'dblQuotedString',
'dblSlashComment', 'delimitedList', 'dictOf', 'downcaseTokens', 'empty', 'hexnums',
'htmlComment', 'javaStyleComment', 'line', 'lineEnd', 'lineStart', 'lineno',
'makeHTMLTags', 'makeXMLTags', 'matchOnlyAtCol', 'matchPreviousExpr', 'matchPreviousLiteral',
'nestedExpr', 'nullDebugAction', 'nums', 'oneOf', 'opAssoc', 'operatorPrecedence', 'printables',
'punc8bit', 'pythonStyleComment', 'quotedString', 'removeQuotes', 'replaceHTMLEntity',
'replaceWith', 'restOfLine', 'sglQuotedString', 'srange', 'stringEnd',
'stringStart', 'traceParseAction', 'unicodeString', 'upcaseTokens', 'withAttribute',
'indentedBlock', 'originalTextFor', 'ungroup', 'infixNotation','locatedExpr', 'withClass',
'CloseMatch', 'tokenMap', 'pyparsing_common',
]
system_version = tuple(sys.version_info)[:3]
PY_3 = system_version[0] == 3
if PY_3:
_MAX_INT = sys.maxsize
basestring = str
unichr = chr
_ustr = str
# build list of single arg builtins, that can be used as parse actions
singleArgBuiltins = [sum, len, sorted, reversed, list, tuple, set, any, all, min, max]
else:
_MAX_INT = sys.maxint
range = xrange
def _ustr(obj):
"""Drop-in replacement for str(obj) that tries to be Unicode friendly. It first tries
str(obj). If that fails with a UnicodeEncodeError, then it tries unicode(obj). It
then < returns the unicode object | encodes it with the default encoding | ... >.
"""
if isinstance(obj,unicode):
return obj
try:
# If this works, then _ustr(obj) has the same behaviour as str(obj), so
# it won't break any existing code.
return str(obj)
except UnicodeEncodeError:
# Else encode it
ret = unicode(obj).encode(sys.getdefaultencoding(), 'xmlcharrefreplace')
xmlcharref = Regex(r'&#\d+;')
xmlcharref.setParseAction(lambda t: '\\u' + hex(int(t[0][2:-1]))[2:])
return xmlcharref.transformString(ret)
# build list of single arg builtins, tolerant of Python version, that can be used as parse actions
singleArgBuiltins = []
import __builtin__
for fname in "sum len sorted reversed list tuple set any all min max".split():
try:
singleArgBuiltins.append(getattr(__builtin__,fname))
except AttributeError:
continue
_generatorType = type((y for y in range(1)))
def _xml_escape(data):
"""Escape &, <, >, ", ', etc. in a string of data."""
# ampersand must be replaced first
from_symbols = '&><"\''
to_symbols = ('&'+s+';' for s in "amp gt lt quot apos".split())
for from_,to_ in zip(from_symbols, to_symbols):
data = data.replace(from_, to_)
return data
class _Constants(object):
pass
alphas = string.ascii_uppercase + string.ascii_lowercase
nums = "0123456789"
hexnums = nums + "ABCDEFabcdef"
alphanums = alphas + nums
_bslash = chr(92)
printables = "".join(c for c in string.printable if c not in string.whitespace)
class ParseBaseException(Exception):
"""base exception class for all parsing runtime exceptions"""
# Performance tuning: we construct a *lot* of these, so keep this
# constructor as small and fast as possible
def __init__( self, pstr, loc=0, msg=None, elem=None ):
self.loc = loc
if msg is None:
self.msg = pstr
self.pstr = ""
else:
self.msg = msg
self.pstr = pstr
self.parserElement = elem
self.args = (pstr, loc, msg)
@classmethod
def _from_exception(cls, pe):
"""
internal factory method to simplify creating one type of ParseException
from another - avoids having __init__ signature conflicts among subclasses
"""
return cls(pe.pstr, pe.loc, pe.msg, pe.parserElement)
def __getattr__( self, aname ):
"""supported attributes by name are:
- lineno - returns the line number of the exception text
- col - returns the column number of the exception text
- line - returns the line containing the exception text
"""
if( aname == "lineno" ):
return lineno( self.loc, self.pstr )
elif( aname in ("col", "column") ):
return col( self.loc, self.pstr )
elif( aname == "line" ):
return line( self.loc, self.pstr )
else:
raise AttributeError(aname)
def __str__( self ):
return "%s (at char %d), (line:%d, col:%d)" % \
( self.msg, self.loc, self.lineno, self.column )
def __repr__( self ):
return _ustr(self)
def markInputline( self, markerString = ">!<" ):
"""Extracts the exception line from the input string, and marks
the location of the exception with a special symbol.
"""
line_str = self.line
line_column = self.column - 1
if markerString:
line_str = "".join((line_str[:line_column],
markerString, line_str[line_column:]))
return line_str.strip()
def __dir__(self):
return "lineno col line".split() + dir(type(self))
class ParseException(ParseBaseException):
"""
Exception thrown when parse expressions don't match class;
supported attributes by name are:
- lineno - returns the line number of the exception text
- col - returns the column number of the exception text
- line - returns the line containing the exception text
Example::
try:
Word(nums).setName("integer").parseString("ABC")
except ParseException as pe:
print(pe)
print("column: {}".format(pe.col))
prints::
Expected integer (at char 0), (line:1, col:1)
column: 1
"""
pass
class ParseFatalException(ParseBaseException):
"""user-throwable exception thrown when inconsistent parse content
is found; stops all parsing immediately"""
pass
class ParseSyntaxException(ParseFatalException):
"""just like L{ParseFatalException}, but thrown internally when an
L{ErrorStop<And._ErrorStop>} ('-' operator) indicates that parsing is to stop
immediately because an unbacktrackable syntax error has been found"""
pass
#~ class ReparseException(ParseBaseException):
#~ """Experimental class - parse actions can raise this exception to cause
#~ pyparsing to reparse the input string:
#~ - with a modified input string, and/or
#~ - with a modified start location
#~ Set the values of the ReparseException in the constructor, and raise the
#~ exception in a parse action to cause pyparsing to use the new string/location.
#~ Setting the values as None causes no change to be made.
#~ """
#~ def __init_( self, newstring, restartLoc ):
#~ self.newParseText = newstring
#~ self.reparseLoc = restartLoc
class RecursiveGrammarException(Exception):
"""exception thrown by L{ParserElement.validate} if the grammar could be improperly recursive"""
def __init__( self, parseElementList ):
self.parseElementTrace = parseElementList
def __str__( self ):
return "RecursiveGrammarException: %s" % self.parseElementTrace
class _ParseResultsWithOffset(object):
def __init__(self,p1,p2):
self.tup = (p1,p2)
def __getitem__(self,i):
return self.tup[i]
def __repr__(self):
return repr(self.tup[0])
def setOffset(self,i):
self.tup = (self.tup[0],i)
class ParseResults(object):
"""
Structured parse results, to provide multiple means of access to the parsed data:
- as a list (C{len(results)})
- by list index (C{results[0], results[1]}, etc.)
- by attribute (C{results.<resultsName>} - see L{ParserElement.setResultsName})
Example::
integer = Word(nums)
date_str = (integer.setResultsName("year") + '/'
+ integer.setResultsName("month") + '/'
+ integer.setResultsName("day"))
# equivalent form:
# date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
# parseString returns a ParseResults object
result = date_str.parseString("1999/12/31")
def test(s, fn=repr):
print("%s -> %s" % (s, fn(eval(s))))
test("list(result)")
test("result[0]")
test("result['month']")
test("result.day")
test("'month' in result")
test("'minutes' in result")
test("result.dump()", str)
prints::
list(result) -> ['1999', '/', '12', '/', '31']
result[0] -> '1999'
result['month'] -> '12'
result.day -> '31'
'month' in result -> True
'minutes' in result -> False
result.dump() -> ['1999', '/', '12', '/', '31']
- day: 31
- month: 12
- year: 1999
"""
def __new__(cls, toklist=None, name=None, asList=True, modal=True ):
if isinstance(toklist, cls):
return toklist
retobj = object.__new__(cls)
retobj.__doinit = True
return retobj
# Performance tuning: we construct a *lot* of these, so keep this
# constructor as small and fast as possible
def __init__( self, toklist=None, name=None, asList=True, modal=True, isinstance=isinstance ):
if self.__doinit:
self.__doinit = False
self.__name = None
self.__parent = None
self.__accumNames = {}
self.__asList = asList
self.__modal = modal
if toklist is None:
toklist = []
if isinstance(toklist, list):
self.__toklist = toklist[:]
elif isinstance(toklist, _generatorType):
self.__toklist = list(toklist)
else:
self.__toklist = [toklist]
self.__tokdict = dict()
if name is not None and name:
if not modal:
self.__accumNames[name] = 0
if isinstance(name,int):
name = _ustr(name) # will always return a str, but use _ustr for consistency
self.__name = name
if not (isinstance(toklist, (type(None), basestring, list)) and toklist in (None,'',[])):
if isinstance(toklist,basestring):
toklist = [ toklist ]
if asList:
if isinstance(toklist,ParseResults):
self[name] = _ParseResultsWithOffset(toklist.copy(),0)
else:
self[name] = _ParseResultsWithOffset(ParseResults(toklist[0]),0)
self[name].__name = name
else:
try:
self[name] = toklist[0]
except (KeyError,TypeError,IndexError):
self[name] = toklist
def __getitem__( self, i ):
if isinstance( i, (int,slice) ):
return self.__toklist[i]
else:
if i not in self.__accumNames:
return self.__tokdict[i][-1][0]
else:
return ParseResults([ v[0] for v in self.__tokdict[i] ])
def __setitem__( self, k, v, isinstance=isinstance ):
if isinstance(v,_ParseResultsWithOffset):
self.__tokdict[k] = self.__tokdict.get(k,list()) + [v]
sub = v[0]
elif isinstance(k,(int,slice)):
self.__toklist[k] = v
sub = v
else:
self.__tokdict[k] = self.__tokdict.get(k,list()) + [_ParseResultsWithOffset(v,0)]
sub = v
if isinstance(sub,ParseResults):
sub.__parent = wkref(self)
def __delitem__( self, i ):
if isinstance(i,(int,slice)):
mylen = len( self.__toklist )
del self.__toklist[i]
# convert int to slice
if isinstance(i, int):
if i < 0:
i += mylen
i = slice(i, i+1)
# get removed indices
removed = list(range(*i.indices(mylen)))
removed.reverse()
# fixup indices in token dictionary
for name,occurrences in self.__tokdict.items():
for j in removed:
for k, (value, position) in enumerate(occurrences):
occurrences[k] = _ParseResultsWithOffset(value, position - (position > j))
else:
del self.__tokdict[i]
def __contains__( self, k ):
return k in self.__tokdict
def __len__( self ): return len( self.__toklist )
def __bool__(self): return ( not not self.__toklist )
__nonzero__ = __bool__
def __iter__( self ): return iter( self.__toklist )
def __reversed__( self ): return iter( self.__toklist[::-1] )
def _iterkeys( self ):
if hasattr(self.__tokdict, "iterkeys"):
return self.__tokdict.iterkeys()
else:
return iter(self.__tokdict)
def _itervalues( self ):
return (self[k] for k in self._iterkeys())
def _iteritems( self ):
return ((k, self[k]) for k in self._iterkeys())
if PY_3:
keys = _iterkeys
"""Returns an iterator of all named result keys (Python 3.x only)."""
values = _itervalues
"""Returns an iterator of all named result values (Python 3.x only)."""
items = _iteritems
"""Returns an iterator of all named result key-value tuples (Python 3.x only)."""
else:
iterkeys = _iterkeys
"""Returns an iterator of all named result keys (Python 2.x only)."""
itervalues = _itervalues
"""Returns an iterator of all named result values (Python 2.x only)."""
iteritems = _iteritems
"""Returns an iterator of all named result key-value tuples (Python 2.x only)."""
def keys( self ):
"""Returns all named result keys (as a list in Python 2.x, as an iterator in Python 3.x)."""
return list(self.iterkeys())
def values( self ):
"""Returns all named result values (as a list in Python 2.x, as an iterator in Python 3.x)."""
return list(self.itervalues())
def items( self ):
"""Returns all named result key-values (as a list of tuples in Python 2.x, as an iterator in Python 3.x)."""
return list(self.iteritems())
def haskeys( self ):
"""Since keys() returns an iterator, this method is helpful in bypassing
code that looks for the existence of any defined results names."""
return bool(self.__tokdict)
def pop( self, *args, **kwargs):
"""
Removes and returns item at specified index (default=C{last}).
Supports both C{list} and C{dict} semantics for C{pop()}. If passed no
argument or an integer argument, it will use C{list} semantics
and pop tokens from the list of parsed tokens. If passed a
non-integer argument (most likely a string), it will use C{dict}
semantics and pop the corresponding value from any defined
results names. A second default return value argument is
supported, just as in C{dict.pop()}.
Example::
def remove_first(tokens):
tokens.pop(0)
print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
print(OneOrMore(Word(nums)).addParseAction(remove_first).parseString("0 123 321")) # -> ['123', '321']
label = Word(alphas)
patt = label("LABEL") + OneOrMore(Word(nums))
print(patt.parseString("AAB 123 321").dump())
# Use pop() in a parse action to remove named result (note that corresponding value is not
# removed from list form of results)
def remove_LABEL(tokens):
tokens.pop("LABEL")
return tokens
patt.addParseAction(remove_LABEL)
print(patt.parseString("AAB 123 321").dump())
prints::
['AAB', '123', '321']
- LABEL: AAB
['AAB', '123', '321']
"""
if not args:
args = [-1]
for k,v in kwargs.items():
if k == 'default':
args = (args[0], v)
else:
raise TypeError("pop() got an unexpected keyword argument '%s'" % k)
if (isinstance(args[0], int) or
len(args) == 1 or
args[0] in self):
index = args[0]
ret = self[index]
del self[index]
return ret
else:
defaultvalue = args[1]
return defaultvalue
def get(self, key, defaultValue=None):
"""
Returns named result matching the given key, or if there is no
such name, then returns the given C{defaultValue} or C{None} if no
C{defaultValue} is specified.
Similar to C{dict.get()}.
Example::
integer = Word(nums)
date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
result = date_str.parseString("1999/12/31")
print(result.get("year")) # -> '1999'
print(result.get("hour", "not specified")) # -> 'not specified'
print(result.get("hour")) # -> None
"""
if key in self:
return self[key]
else:
return defaultValue
def insert( self, index, insStr ):
"""
Inserts new element at location index in the list of parsed tokens.
Similar to C{list.insert()}.
Example::
print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
# use a parse action to insert the parse location in the front of the parsed results
def insert_locn(locn, tokens):
tokens.insert(0, locn)
print(OneOrMore(Word(nums)).addParseAction(insert_locn).parseString("0 123 321")) # -> [0, '0', '123', '321']
"""
self.__toklist.insert(index, insStr)
# fixup indices in token dictionary
for name,occurrences in self.__tokdict.items():
for k, (value, position) in enumerate(occurrences):
occurrences[k] = _ParseResultsWithOffset(value, position + (position > index))
def append( self, item ):
"""
Add single element to end of ParseResults list of elements.
Example::
print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
# use a parse action to compute the sum of the parsed integers, and add it to the end
def append_sum(tokens):
tokens.append(sum(map(int, tokens)))
print(OneOrMore(Word(nums)).addParseAction(append_sum).parseString("0 123 321")) # -> ['0', '123', '321', 444]
"""
self.__toklist.append(item)
def extend( self, itemseq ):
"""
Add sequence of elements to end of ParseResults list of elements.
Example::
patt = OneOrMore(Word(alphas))
# use a parse action to append the reverse of the matched strings, to make a palindrome
def make_palindrome(tokens):
tokens.extend(reversed([t[::-1] for t in tokens]))
return ''.join(tokens)
print(patt.addParseAction(make_palindrome).parseString("lskdj sdlkjf lksd")) # -> 'lskdjsdlkjflksddsklfjkldsjdksl'
"""
if isinstance(itemseq, ParseResults):
self += itemseq
else:
self.__toklist.extend(itemseq)
def clear( self ):
"""
Clear all elements and results names.
"""
del self.__toklist[:]
self.__tokdict.clear()
def __getattr__( self, name ):
try:
return self[name]
except KeyError:
return ""
if name in self.__tokdict:
if name not in self.__accumNames:
return self.__tokdict[name][-1][0]
else:
return ParseResults([ v[0] for v in self.__tokdict[name] ])
else:
return ""
def __add__( self, other ):
ret = self.copy()
ret += other
return ret
def __iadd__( self, other ):
if other.__tokdict:
offset = len(self.__toklist)
addoffset = lambda a: offset if a<0 else a+offset
otheritems = other.__tokdict.items()
otherdictitems = [(k, _ParseResultsWithOffset(v[0],addoffset(v[1])) )
for (k,vlist) in otheritems for v in vlist]
for k,v in otherdictitems:
self[k] = v
if isinstance(v[0],ParseResults):
v[0].__parent = wkref(self)
self.__toklist += other.__toklist
self.__accumNames.update( other.__accumNames )
return self
def __radd__(self, other):
if isinstance(other,int) and other == 0:
# useful for merging many ParseResults using sum() builtin
return self.copy()
else:
# this may raise a TypeError - so be it
return other + self
def __repr__( self ):
return "(%s, %s)" % ( repr( self.__toklist ), repr( self.__tokdict ) )
def __str__( self ):
return '[' + ', '.join(_ustr(i) if isinstance(i, ParseResults) else repr(i) for i in self.__toklist) + ']'
def _asStringList( self, sep='' ):
out = []
for item in self.__toklist:
if out and sep:
out.append(sep)
if isinstance( item, ParseResults ):
out += item._asStringList()
else:
out.append( _ustr(item) )
return out
def asList( self ):
"""
Returns the parse results as a nested list of matching tokens, all converted to strings.
Example::
patt = OneOrMore(Word(alphas))
result = patt.parseString("sldkj lsdkj sldkj")
# even though the result prints in string-like form, it is actually a pyparsing ParseResults
print(type(result), result) # -> <class 'pyparsing.ParseResults'> ['sldkj', 'lsdkj', 'sldkj']
# Use asList() to create an actual list
result_list = result.asList()
print(type(result_list), result_list) # -> <class 'list'> ['sldkj', 'lsdkj', 'sldkj']
"""
return [res.asList() if isinstance(res,ParseResults) else res for res in self.__toklist]
def asDict( self ):
"""
Returns the named parse results as a nested dictionary.
Example::
integer = Word(nums)
date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
result = date_str.parseString('12/31/1999')
print(type(result), repr(result)) # -> <class 'pyparsing.ParseResults'> (['12', '/', '31', '/', '1999'], {'day': [('1999', 4)], 'year': [('12', 0)], 'month': [('31', 2)]})
result_dict = result.asDict()
print(type(result_dict), repr(result_dict)) # -> <class 'dict'> {'day': '1999', 'year': '12', 'month': '31'}
# even though a ParseResults supports dict-like access, sometime you just need to have a dict
import json
print(json.dumps(result)) # -> Exception: TypeError: ... is not JSON serializable
print(json.dumps(result.asDict())) # -> {"month": "31", "day": "1999", "year": "12"}
"""
if PY_3:
item_fn = self.items
else:
item_fn = self.iteritems
def toItem(obj):
if isinstance(obj, ParseResults):
if obj.haskeys():
return obj.asDict()
else:
return [toItem(v) for v in obj]
else:
return obj
return dict((k,toItem(v)) for k,v in item_fn())
def copy( self ):
"""
Returns a new copy of a C{ParseResults} object.
"""
ret = ParseResults( self.__toklist )
ret.__tokdict = self.__tokdict.copy()
ret.__parent = self.__parent
ret.__accumNames.update( self.__accumNames )
ret.__name = self.__name
return ret
def asXML( self, doctag=None, namedItemsOnly=False, indent="", formatted=True ):
"""
(Deprecated) Returns the parse results as XML. Tags are created for tokens and lists that have defined results names.
"""
nl = "\n"
out = []
namedItems = dict((v[1],k) for (k,vlist) in self.__tokdict.items()
for v in vlist)
nextLevelIndent = indent + " "
# collapse out indents if formatting is not desired
if not formatted:
indent = ""
nextLevelIndent = ""
nl = ""
selfTag = None
if doctag is not None:
selfTag = doctag
else:
if self.__name:
selfTag = self.__name
if not selfTag:
if namedItemsOnly:
return ""
else:
selfTag = "ITEM"
out += [ nl, indent, "<", selfTag, ">" ]
for i,res in enumerate(self.__toklist):
if isinstance(res,ParseResults):
if i in namedItems:
out += [ res.asXML(namedItems[i],
namedItemsOnly and doctag is None,
nextLevelIndent,
formatted)]
else:
out += [ res.asXML(None,
namedItemsOnly and doctag is None,
nextLevelIndent,
formatted)]
else:
# individual token, see if there is a name for it
resTag = None
if i in namedItems:
resTag = namedItems[i]
if not resTag:
if namedItemsOnly:
continue
else:
resTag = "ITEM"
xmlBodyText = _xml_escape(_ustr(res))
out += [ nl, nextLevelIndent, "<", resTag, ">",
xmlBodyText,
"</", resTag, ">" ]
out += [ nl, indent, "</", selfTag, ">" ]
return "".join(out)
def __lookup(self,sub):
for k,vlist in self.__tokdict.items():
for v,loc in vlist:
if sub is v:
return k
return None
def getName(self):
r"""
Returns the results name for this token expression. Useful when several
different expressions might match at a particular location.
Example::
integer = Word(nums)
ssn_expr = Regex(r"\d\d\d-\d\d-\d\d\d\d")
house_number_expr = Suppress('#') + Word(nums, alphanums)
user_data = (Group(house_number_expr)("house_number")
| Group(ssn_expr)("ssn")
| Group(integer)("age"))
user_info = OneOrMore(user_data)
result = user_info.parseString("22 111-22-3333 #221B")
for item in result:
print(item.getName(), ':', item[0])
prints::
age : 22
ssn : 111-22-3333
house_number : 221B
"""
if self.__name:
return self.__name
elif self.__parent:
par = self.__parent()
if par:
return par.__lookup(self)
else:
return None
elif (len(self) == 1 and
len(self.__tokdict) == 1 and
next(iter(self.__tokdict.values()))[0][1] in (0,-1)):
return next(iter(self.__tokdict.keys()))
else:
return None
def dump(self, indent='', depth=0, full=True):
"""
Diagnostic method for listing out the contents of a C{ParseResults}.
Accepts an optional C{indent} argument so that this string can be embedded
in a nested display of other data.
Example::
integer = Word(nums)
date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
result = date_str.parseString('12/31/1999')
print(result.dump())
prints::
['12', '/', '31', '/', '1999']
- day: 1999
- month: 31
- year: 12
"""
out = []
NL = '\n'
out.append( indent+_ustr(self.asList()) )
if full:
if self.haskeys():
items = sorted((str(k), v) for k,v in self.items())
for k,v in items:
if out:
out.append(NL)
out.append( "%s%s- %s: " % (indent,(' '*depth), k) )
if isinstance(v,ParseResults):
if v:
out.append( v.dump(indent,depth+1) )
else:
out.append(_ustr(v))
else:
out.append(repr(v))
elif any(isinstance(vv,ParseResults) for vv in self):
v = self
for i,vv in enumerate(v):
if isinstance(vv,ParseResults):
out.append("\n%s%s[%d]:\n%s%s%s" % (indent,(' '*(depth)),i,indent,(' '*(depth+1)),vv.dump(indent,depth+1) ))
else:
out.append("\n%s%s[%d]:\n%s%s%s" % (indent,(' '*(depth)),i,indent,(' '*(depth+1)),_ustr(vv)))
return "".join(out)
def pprint(self, *args, **kwargs):
"""
Pretty-printer for parsed results as a list, using the C{pprint} module.
Accepts additional positional or keyword args as defined for the
C{pprint.pprint} method. (U{http://docs.python.org/3/library/pprint.html#pprint.pprint})
Example::
ident = Word(alphas, alphanums)
num = Word(nums)
func = Forward()
term = ident | num | Group('(' + func + ')')
func <<= ident + Group(Optional(delimitedList(term)))
result = func.parseString("fna a,b,(fnb c,d,200),100")
result.pprint(width=40)
prints::
['fna',
['a',
'b',
['(', 'fnb', ['c', 'd', '200'], ')'],
'100']]
"""
pprint.pprint(self.asList(), *args, **kwargs)
# add support for pickle protocol
def __getstate__(self):
return ( self.__toklist,
( self.__tokdict.copy(),
self.__parent is not None and self.__parent() or None,
self.__accumNames,
self.__name ) )
def __setstate__(self,state):
self.__toklist = state[0]
(self.__tokdict,
par,
inAccumNames,
self.__name) = state[1]
self.__accumNames = {}
self.__accumNames.update(inAccumNames)
if par is not None:
self.__parent = wkref(par)
else:
self.__parent = None
def __getnewargs__(self):
return self.__toklist, self.__name, self.__asList, self.__modal
def __dir__(self):
return (dir(type(self)) + list(self.keys()))
collections.MutableMapping.register(ParseResults)
def col (loc,strg):
"""Returns current column within a string, counting newlines as line separators.
The first column is number 1.
Note: the default parsing behavior is to expand tabs in the input string
before starting the parsing process. See L{I{ParserElement.parseString}<ParserElement.parseString>} for more information
on parsing strings containing C{<TAB>}s, and suggested methods to maintain a
consistent view of the parsed string, the parse location, and line and column
positions within the parsed string.
"""
s = strg
return 1 if 0<loc<len(s) and s[loc-1] == '\n' else loc - s.rfind("\n", 0, loc)
def lineno(loc,strg):
"""Returns current line number within a string, counting newlines as line separators.
The first line is number 1.
Note: the default parsing behavior is to expand tabs in the input string
before starting the parsing process. See L{I{ParserElement.parseString}<ParserElement.parseString>} for more information
on parsing strings containing C{<TAB>}s, and suggested methods to maintain a
consistent view of the parsed string, the parse location, and line and column
positions within the parsed string.
"""
return strg.count("\n",0,loc) + 1
def line( loc, strg ):
"""Returns the line of text containing loc within a string, counting newlines as line separators.
"""
lastCR = strg.rfind("\n", 0, loc)
nextCR = strg.find("\n", loc)
if nextCR >= 0:
return strg[lastCR+1:nextCR]
else:
return strg[lastCR+1:]
def _defaultStartDebugAction( instring, loc, expr ):
print (("Match " + _ustr(expr) + " at loc " + _ustr(loc) + "(%d,%d)" % ( lineno(loc,instring), col(loc,instring) )))
def _defaultSuccessDebugAction( instring, startloc, endloc, expr, toks ):
print ("Matched " + _ustr(expr) + " -> " + str(toks.asList()))
def _defaultExceptionDebugAction( instring, loc, expr, exc ):
print ("Exception raised:" + _ustr(exc))
def nullDebugAction(*args):
"""'Do-nothing' debug action, to suppress debugging output during parsing."""
pass
# Only works on Python 3.x - nonlocal is toxic to Python 2 installs
#~ 'decorator to trim function calls to match the arity of the target'
#~ def _trim_arity(func, maxargs=3):
#~ if func in singleArgBuiltins:
#~ return lambda s,l,t: func(t)
#~ limit = 0
#~ foundArity = False
#~ def wrapper(*args):
#~ nonlocal limit,foundArity
#~ while 1:
#~ try:
#~ ret = func(*args[limit:])
#~ foundArity = True
#~ return ret
#~ except TypeError:
#~ if limit == maxargs or foundArity:
#~ raise
#~ limit += 1
#~ continue
#~ return wrapper
# this version is Python 2.x-3.x cross-compatible
'decorator to trim function calls to match the arity of the target'
def _trim_arity(func, maxargs=2):
if func in singleArgBuiltins:
return lambda s,l,t: func(t)
limit = [0]
foundArity = [False]
# traceback return data structure changed in Py3.5 - normalize back to plain tuples
if system_version[:2] >= (3,5):
def extract_stack(limit=0):
# special handling for Python 3.5.0 - extra deep call stack by 1
offset = -3 if system_version == (3,5,0) else -2
frame_summary = traceback.extract_stack(limit=-offset+limit-1)[offset]
return [(frame_summary.filename, frame_summary.lineno)]
def extract_tb(tb, limit=0):
frames = traceback.extract_tb(tb, limit=limit)
frame_summary = frames[-1]
return [(frame_summary.filename, frame_summary.lineno)]
else:
extract_stack = traceback.extract_stack
extract_tb = traceback.extract_tb
# synthesize what would be returned by traceback.extract_stack at the call to
# user's parse action 'func', so that we don't incur call penalty at parse time
LINE_DIFF = 6
# IF ANY CODE CHANGES, EVEN JUST COMMENTS OR BLANK LINES, BETWEEN THE NEXT LINE AND
# THE CALL TO FUNC INSIDE WRAPPER, LINE_DIFF MUST BE MODIFIED!!!!
this_line = extract_stack(limit=2)[-1]
pa_call_line_synth = (this_line[0], this_line[1]+LINE_DIFF)
def wrapper(*args):
while 1:
try:
ret = func(*args[limit[0]:])
foundArity[0] = True
return ret
except TypeError:
# re-raise TypeErrors if they did not come from our arity testing
if foundArity[0]:
raise
else:
try:
tb = sys.exc_info()[-1]
if not extract_tb(tb, limit=2)[-1][:2] == pa_call_line_synth:
raise
finally:
del tb
if limit[0] <= maxargs:
limit[0] += 1
continue
raise
# copy func name to wrapper for sensible debug output
func_name = "<parse action>"
try:
func_name = getattr(func, '__name__',
getattr(func, '__class__').__name__)
except Exception:
func_name = str(func)
wrapper.__name__ = func_name
return wrapper
class ParserElement(object):
"""Abstract base level parser element class."""
DEFAULT_WHITE_CHARS = " \n\t\r"
verbose_stacktrace = False
@staticmethod
def setDefaultWhitespaceChars( chars ):
r"""
Overrides the default whitespace chars
Example::
# default whitespace chars are space, <TAB> and newline
OneOrMore(Word(alphas)).parseString("abc def\nghi jkl") # -> ['abc', 'def', 'ghi', 'jkl']
# change to just treat newline as significant
ParserElement.setDefaultWhitespaceChars(" \t")
OneOrMore(Word(alphas)).parseString("abc def\nghi jkl") # -> ['abc', 'def']
"""
ParserElement.DEFAULT_WHITE_CHARS = chars
@staticmethod
def inlineLiteralsUsing(cls):
"""
Set class to be used for inclusion of string literals into a parser.
Example::
# default literal class used is Literal
integer = Word(nums)
date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
date_str.parseString("1999/12/31") # -> ['1999', '/', '12', '/', '31']
# change to Suppress
ParserElement.inlineLiteralsUsing(Suppress)
date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
date_str.parseString("1999/12/31") # -> ['1999', '12', '31']
"""
ParserElement._literalStringClass = cls
def __init__( self, savelist=False ):
self.parseAction = list()
self.failAction = None
#~ self.name = "<unknown>" # don't define self.name, let subclasses try/except upcall
self.strRepr = None
self.resultsName = None
self.saveAsList = savelist
self.skipWhitespace = True
self.whiteChars = ParserElement.DEFAULT_WHITE_CHARS
self.copyDefaultWhiteChars = True
self.mayReturnEmpty = False # used when checking for left-recursion
self.keepTabs = False
self.ignoreExprs = list()
self.debug = False
self.streamlined = False
self.mayIndexError = True # used to optimize exception handling for subclasses that don't advance parse index
self.errmsg = ""
self.modalResults = True # used to mark results names as modal (report only last) or cumulative (list all)
self.debugActions = ( None, None, None ) #custom debug actions
self.re = None
self.callPreparse = True # used to avoid redundant calls to preParse
self.callDuringTry = False
def copy( self ):
"""
Make a copy of this C{ParserElement}. Useful for defining different parse actions
for the same parsing pattern, using copies of the original parse element.
Example::
integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
integerK = integer.copy().addParseAction(lambda toks: toks[0]*1024) + Suppress("K")
integerM = integer.copy().addParseAction(lambda toks: toks[0]*1024*1024) + Suppress("M")
print(OneOrMore(integerK | integerM | integer).parseString("5K 100 640K 256M"))
prints::
[5120, 100, 655360, 268435456]
Equivalent form of C{expr.copy()} is just C{expr()}::
integerM = integer().addParseAction(lambda toks: toks[0]*1024*1024) + Suppress("M")
"""
cpy = copy.copy( self )
cpy.parseAction = self.parseAction[:]
cpy.ignoreExprs = self.ignoreExprs[:]
if self.copyDefaultWhiteChars:
cpy.whiteChars = ParserElement.DEFAULT_WHITE_CHARS
return cpy
def setName( self, name ):
"""
Define name for this expression, makes debugging and exception messages clearer.
Example::
Word(nums).parseString("ABC") # -> Exception: Expected W:(0123...) (at char 0), (line:1, col:1)
Word(nums).setName("integer").parseString("ABC") # -> Exception: Expected integer (at char 0), (line:1, col:1)
"""
self.name = name
self.errmsg = "Expected " + self.name
if hasattr(self,"exception"):
self.exception.msg = self.errmsg
return self
def setResultsName( self, name, listAllMatches=False ):
"""
Define name for referencing matching tokens as a nested attribute
of the returned parse results.
NOTE: this returns a *copy* of the original C{ParserElement} object;
this is so that the client can define a basic element, such as an
integer, and reference it in multiple places with different names.
You can also set results names using the abbreviated syntax,
C{expr("name")} in place of C{expr.setResultsName("name")} -
see L{I{__call__}<__call__>}.
Example::
date_str = (integer.setResultsName("year") + '/'
+ integer.setResultsName("month") + '/'
+ integer.setResultsName("day"))
# equivalent form:
date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
"""
newself = self.copy()
if name.endswith("*"):
name = name[:-1]
listAllMatches=True
newself.resultsName = name
newself.modalResults = not listAllMatches
return newself
def setBreak(self,breakFlag = True):
"""Method to invoke the Python pdb debugger when this element is
about to be parsed. Set C{breakFlag} to True to enable, False to
disable.
"""
if breakFlag:
_parseMethod = self._parse
def breaker(instring, loc, doActions=True, callPreParse=True):
import pdb
pdb.set_trace()
return _parseMethod( instring, loc, doActions, callPreParse )
breaker._originalParseMethod = _parseMethod
self._parse = breaker
else:
if hasattr(self._parse,"_originalParseMethod"):
self._parse = self._parse._originalParseMethod
return self
def setParseAction( self, *fns, **kwargs ):
"""
Define one or more actions to perform when successfully matching parse element definition.
Parse action fn is a callable method with 0-3 arguments, called as C{fn(s,loc,toks)},
C{fn(loc,toks)}, C{fn(toks)}, or just C{fn()}, where:
- s = the original string being parsed (see note below)
- loc = the location of the matching substring
- toks = a list of the matched tokens, packaged as a C{L{ParseResults}} object
If the functions in fns modify the tokens, they can return them as the return
value from fn, and the modified list of tokens will replace the original.
Otherwise, fn does not need to return any value.
Optional keyword arguments:
- callDuringTry = (default=C{False}) indicate if parse action should be run during lookaheads and alternate testing
Note: the default parsing behavior is to expand tabs in the input string
before starting the parsing process. See L{I{parseString}<parseString>} for more information
on parsing strings containing C{<TAB>}s, and suggested methods to maintain a
consistent view of the parsed string, the parse location, and line and column
positions within the parsed string.
Example::
integer = Word(nums)
date_str = integer + '/' + integer + '/' + integer
date_str.parseString("1999/12/31") # -> ['1999', '/', '12', '/', '31']
# use parse action to convert to ints at parse time
integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
date_str = integer + '/' + integer + '/' + integer
# note that integer fields are now ints, not strings
date_str.parseString("1999/12/31") # -> [1999, '/', 12, '/', 31]
"""
self.parseAction = list(map(_trim_arity, list(fns)))
self.callDuringTry = kwargs.get("callDuringTry", False)
return self
def addParseAction( self, *fns, **kwargs ):
"""
Add one or more parse actions to expression's list of parse actions. See L{I{setParseAction}<setParseAction>}.
See examples in L{I{copy}<copy>}.
"""
self.parseAction += list(map(_trim_arity, list(fns)))
self.callDuringTry = self.callDuringTry or kwargs.get("callDuringTry", False)
return self
def addCondition(self, *fns, **kwargs):
"""Add a boolean predicate function to expression's list of parse actions. See
L{I{setParseAction}<setParseAction>} for function call signatures. Unlike C{setParseAction},
functions passed to C{addCondition} need to return boolean success/fail of the condition.
Optional keyword arguments:
- message = define a custom message to be used in the raised exception
- fatal = if True, will raise ParseFatalException to stop parsing immediately; otherwise will raise ParseException
Example::
integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
year_int = integer.copy()
year_int.addCondition(lambda toks: toks[0] >= 2000, message="Only support years 2000 and later")
date_str = year_int + '/' + integer + '/' + integer
result = date_str.parseString("1999/12/31") # -> Exception: Only support years 2000 and later (at char 0), (line:1, col:1)
"""
msg = kwargs.get("message", "failed user-defined condition")
exc_type = ParseFatalException if kwargs.get("fatal", False) else ParseException
for fn in fns:
def pa(s,l,t):
if not bool(_trim_arity(fn)(s,l,t)):
raise exc_type(s,l,msg)
self.parseAction.append(pa)
self.callDuringTry = self.callDuringTry or kwargs.get("callDuringTry", False)
return self
def setFailAction( self, fn ):
"""Define action to perform if parsing fails at this expression.
Fail acton fn is a callable function that takes the arguments
C{fn(s,loc,expr,err)} where:
- s = string being parsed
- loc = location where expression match was attempted and failed
- expr = the parse expression that failed
- err = the exception thrown
The function returns no value. It may throw C{L{ParseFatalException}}
if it is desired to stop parsing immediately."""
self.failAction = fn
return self
def _skipIgnorables( self, instring, loc ):
exprsFound = True
while exprsFound:
exprsFound = False
for e in self.ignoreExprs:
try:
while 1:
loc,dummy = e._parse( instring, loc )
exprsFound = True
except ParseException:
pass
return loc
def preParse( self, instring, loc ):
if self.ignoreExprs:
loc = self._skipIgnorables( instring, loc )
if self.skipWhitespace:
wt = self.whiteChars
instrlen = len(instring)
while loc < instrlen and instring[loc] in wt:
loc += 1
return loc
def parseImpl( self, instring, loc, doActions=True ):
return loc, []
def postParse( self, instring, loc, tokenlist ):
return tokenlist
#~ @profile
def _parseNoCache( self, instring, loc, doActions=True, callPreParse=True ):
debugging = ( self.debug ) #and doActions )
if debugging or self.failAction:
#~ print ("Match",self,"at loc",loc,"(%d,%d)" % ( lineno(loc,instring), col(loc,instring) ))
if (self.debugActions[0] ):
self.debugActions[0]( instring, loc, self )
if callPreParse and self.callPreparse:
preloc = self.preParse( instring, loc )
else:
preloc = loc
tokensStart = preloc
try:
try:
loc,tokens = self.parseImpl( instring, preloc, doActions )
except IndexError:
raise ParseException( instring, len(instring), self.errmsg, self )
except ParseBaseException as err:
#~ print ("Exception raised:", err)
if self.debugActions[2]:
self.debugActions[2]( instring, tokensStart, self, err )
if self.failAction:
self.failAction( instring, tokensStart, self, err )
raise
else:
if callPreParse and self.callPreparse:
preloc = self.preParse( instring, loc )
else:
preloc = loc
tokensStart = preloc
if self.mayIndexError or loc >= len(instring):
try:
loc,tokens = self.parseImpl( instring, preloc, doActions )
except IndexError:
raise ParseException( instring, len(instring), self.errmsg, self )
else:
loc,tokens = self.parseImpl( instring, preloc, doActions )
tokens = self.postParse( instring, loc, tokens )
retTokens = ParseResults( tokens, self.resultsName, asList=self.saveAsList, modal=self.modalResults )
if self.parseAction and (doActions or self.callDuringTry):
if debugging:
try:
for fn in self.parseAction:
tokens = fn( instring, tokensStart, retTokens )
if tokens is not None:
retTokens = ParseResults( tokens,
self.resultsName,
asList=self.saveAsList and isinstance(tokens,(ParseResults,list)),
modal=self.modalResults )
except ParseBaseException as err:
#~ print "Exception raised in user parse action:", err
if (self.debugActions[2] ):
self.debugActions[2]( instring, tokensStart, self, err )
raise
else:
for fn in self.parseAction:
tokens = fn( instring, tokensStart, retTokens )
if tokens is not None:
retTokens = ParseResults( tokens,
self.resultsName,
asList=self.saveAsList and isinstance(tokens,(ParseResults,list)),
modal=self.modalResults )
if debugging:
#~ print ("Matched",self,"->",retTokens.asList())
if (self.debugActions[1] ):
self.debugActions[1]( instring, tokensStart, loc, self, retTokens )
return loc, retTokens
def tryParse( self, instring, loc ):
try:
return self._parse( instring, loc, doActions=False )[0]
except ParseFatalException:
raise ParseException( instring, loc, self.errmsg, self)
def canParseNext(self, instring, loc):
try:
self.tryParse(instring, loc)
except (ParseException, IndexError):
return False
else:
return True
class _UnboundedCache(object):
def __init__(self):
cache = {}
self.not_in_cache = not_in_cache = object()
def get(self, key):
return cache.get(key, not_in_cache)
def set(self, key, value):
cache[key] = value
def clear(self):
cache.clear()
def cache_len(self):
return len(cache)
self.get = types.MethodType(get, self)
self.set = types.MethodType(set, self)
self.clear = types.MethodType(clear, self)
self.__len__ = types.MethodType(cache_len, self)
if _OrderedDict is not None:
class _FifoCache(object):
def __init__(self, size):
self.not_in_cache = not_in_cache = object()
cache = _OrderedDict()
def get(self, key):
return cache.get(key, not_in_cache)
def set(self, key, value):
cache[key] = value
while len(cache) > size:
try:
cache.popitem(False)
except KeyError:
pass
def clear(self):
cache.clear()
def cache_len(self):
return len(cache)
self.get = types.MethodType(get, self)
self.set = types.MethodType(set, self)
self.clear = types.MethodType(clear, self)
self.__len__ = types.MethodType(cache_len, self)
else:
class _FifoCache(object):
def __init__(self, size):
self.not_in_cache = not_in_cache = object()
cache = {}
key_fifo = collections.deque([], size)
def get(self, key):
return cache.get(key, not_in_cache)
def set(self, key, value):
cache[key] = value
while len(key_fifo) > size:
cache.pop(key_fifo.popleft(), None)
key_fifo.append(key)
def clear(self):
cache.clear()
key_fifo.clear()
def cache_len(self):
return len(cache)
self.get = types.MethodType(get, self)
self.set = types.MethodType(set, self)
self.clear = types.MethodType(clear, self)
self.__len__ = types.MethodType(cache_len, self)
# argument cache for optimizing repeated calls when backtracking through recursive expressions
packrat_cache = {} # this is set later by enabledPackrat(); this is here so that resetCache() doesn't fail
packrat_cache_lock = RLock()
packrat_cache_stats = [0, 0]
# this method gets repeatedly called during backtracking with the same arguments -
# we can cache these arguments and save ourselves the trouble of re-parsing the contained expression
def _parseCache( self, instring, loc, doActions=True, callPreParse=True ):
HIT, MISS = 0, 1
lookup = (self, instring, loc, callPreParse, doActions)
with ParserElement.packrat_cache_lock:
cache = ParserElement.packrat_cache
value = cache.get(lookup)
if value is cache.not_in_cache:
ParserElement.packrat_cache_stats[MISS] += 1
try:
value = self._parseNoCache(instring, loc, doActions, callPreParse)
except ParseBaseException as pe:
# cache a copy of the exception, without the traceback
cache.set(lookup, pe.__class__(*pe.args))
raise
else:
cache.set(lookup, (value[0], value[1].copy()))
return value
else:
ParserElement.packrat_cache_stats[HIT] += 1
if isinstance(value, Exception):
raise value
return (value[0], value[1].copy())
_parse = _parseNoCache
@staticmethod
def resetCache():
ParserElement.packrat_cache.clear()
ParserElement.packrat_cache_stats[:] = [0] * len(ParserElement.packrat_cache_stats)
_packratEnabled = False
@staticmethod
def enablePackrat(cache_size_limit=128):
"""Enables "packrat" parsing, which adds memoizing to the parsing logic.
Repeated parse attempts at the same string location (which happens
often in many complex grammars) can immediately return a cached value,
instead of re-executing parsing/validating code. Memoizing is done of
both valid results and parsing exceptions.
Parameters:
- cache_size_limit - (default=C{128}) - if an integer value is provided
will limit the size of the packrat cache; if None is passed, then
the cache size will be unbounded; if 0 is passed, the cache will
be effectively disabled.
This speedup may break existing programs that use parse actions that
have side-effects. For this reason, packrat parsing is disabled when
you first import pyparsing. To activate the packrat feature, your
program must call the class method C{ParserElement.enablePackrat()}. If
your program uses C{psyco} to "compile as you go", you must call
C{enablePackrat} before calling C{psyco.full()}. If you do not do this,
Python will crash. For best results, call C{enablePackrat()} immediately
after importing pyparsing.
Example::
import pyparsing
pyparsing.ParserElement.enablePackrat()
"""
if not ParserElement._packratEnabled:
ParserElement._packratEnabled = True
if cache_size_limit is None:
ParserElement.packrat_cache = ParserElement._UnboundedCache()
else:
ParserElement.packrat_cache = ParserElement._FifoCache(cache_size_limit)
ParserElement._parse = ParserElement._parseCache
def parseString( self, instring, parseAll=False ):
"""
Execute the parse expression with the given string.
This is the main interface to the client code, once the complete
expression has been built.
If you want the grammar to require that the entire input string be
successfully parsed, then set C{parseAll} to True (equivalent to ending
the grammar with C{L{StringEnd()}}).
Note: C{parseString} implicitly calls C{expandtabs()} on the input string,
in order to report proper column numbers in parse actions.
If the input string contains tabs and
the grammar uses parse actions that use the C{loc} argument to index into the
string being parsed, you can ensure you have a consistent view of the input
string by:
- calling C{parseWithTabs} on your grammar before calling C{parseString}
(see L{I{parseWithTabs}<parseWithTabs>})
- define your parse action using the full C{(s,loc,toks)} signature, and
reference the input string using the parse action's C{s} argument
- explictly expand the tabs in your input string before calling
C{parseString}
Example::
Word('a').parseString('aaaaabaaa') # -> ['aaaaa']
Word('a').parseString('aaaaabaaa', parseAll=True) # -> Exception: Expected end of text
"""
ParserElement.resetCache()
if not self.streamlined:
self.streamline()
#~ self.saveAsList = True
for e in self.ignoreExprs:
e.streamline()
if not self.keepTabs:
instring = instring.expandtabs()
try:
loc, tokens = self._parse( instring, 0 )
if parseAll:
loc = self.preParse( instring, loc )
se = Empty() + StringEnd()
se._parse( instring, loc )
except ParseBaseException as exc:
if ParserElement.verbose_stacktrace:
raise
else:
# catch and re-raise exception from here, clears out pyparsing internal stack trace
raise exc
else:
return tokens
def scanString( self, instring, maxMatches=_MAX_INT, overlap=False ):
"""
Scan the input string for expression matches. Each match will return the
matching tokens, start location, and end location. May be called with optional
C{maxMatches} argument, to clip scanning after 'n' matches are found. If
C{overlap} is specified, then overlapping matches will be reported.
Note that the start and end locations are reported relative to the string
being parsed. See L{I{parseString}<parseString>} for more information on parsing
strings with embedded tabs.
Example::
source = "sldjf123lsdjjkf345sldkjf879lkjsfd987"
print(source)
for tokens,start,end in Word(alphas).scanString(source):
print(' '*start + '^'*(end-start))
print(' '*start + tokens[0])
prints::
sldjf123lsdjjkf345sldkjf879lkjsfd987
^^^^^
sldjf
^^^^^^^
lsdjjkf
^^^^^^
sldkjf
^^^^^^
lkjsfd
"""
if not self.streamlined:
self.streamline()
for e in self.ignoreExprs:
e.streamline()
if not self.keepTabs:
instring = _ustr(instring).expandtabs()
instrlen = len(instring)
loc = 0
preparseFn = self.preParse
parseFn = self._parse
ParserElement.resetCache()
matches = 0
try:
while loc <= instrlen and matches < maxMatches:
try:
preloc = preparseFn( instring, loc )
nextLoc,tokens = parseFn( instring, preloc, callPreParse=False )
except ParseException:
loc = preloc+1
else:
if nextLoc > loc:
matches += 1
yield tokens, preloc, nextLoc
if overlap:
nextloc = preparseFn( instring, loc )
if nextloc > loc:
loc = nextLoc
else:
loc += 1
else:
loc = nextLoc
else:
loc = preloc+1
except ParseBaseException as exc:
if ParserElement.verbose_stacktrace:
raise
else:
# catch and re-raise exception from here, clears out pyparsing internal stack trace
raise exc
def transformString( self, instring ):
"""
Extension to C{L{scanString}}, to modify matching text with modified tokens that may
be returned from a parse action. To use C{transformString}, define a grammar and
attach a parse action to it that modifies the returned token list.
Invoking C{transformString()} on a target string will then scan for matches,
and replace the matched text patterns according to the logic in the parse
action. C{transformString()} returns the resulting transformed string.
Example::
wd = Word(alphas)
wd.setParseAction(lambda toks: toks[0].title())
print(wd.transformString("now is the winter of our discontent made glorious summer by this sun of york."))
Prints::
Now Is The Winter Of Our Discontent Made Glorious Summer By This Sun Of York.
"""
out = []
lastE = 0
# force preservation of <TAB>s, to minimize unwanted transformation of string, and to
# keep string locs straight between transformString and scanString
self.keepTabs = True
try:
for t,s,e in self.scanString( instring ):
out.append( instring[lastE:s] )
if t:
if isinstance(t,ParseResults):
out += t.asList()
elif isinstance(t,list):
out += t
else:
out.append(t)
lastE = e
out.append(instring[lastE:])
out = [o for o in out if o]
return "".join(map(_ustr,_flatten(out)))
except ParseBaseException as exc:
if ParserElement.verbose_stacktrace:
raise
else:
# catch and re-raise exception from here, clears out pyparsing internal stack trace
raise exc
def searchString( self, instring, maxMatches=_MAX_INT ):
"""
Another extension to C{L{scanString}}, simplifying the access to the tokens found
to match the given parse expression. May be called with optional
C{maxMatches} argument, to clip searching after 'n' matches are found.
Example::
# a capitalized word starts with an uppercase letter, followed by zero or more lowercase letters
cap_word = Word(alphas.upper(), alphas.lower())
print(cap_word.searchString("More than Iron, more than Lead, more than Gold I need Electricity"))
# the sum() builtin can be used to merge results into a single ParseResults object
print(sum(cap_word.searchString("More than Iron, more than Lead, more than Gold I need Electricity")))
prints::
[['More'], ['Iron'], ['Lead'], ['Gold'], ['I'], ['Electricity']]
['More', 'Iron', 'Lead', 'Gold', 'I', 'Electricity']
"""
try:
return ParseResults([ t for t,s,e in self.scanString( instring, maxMatches ) ])
except ParseBaseException as exc:
if ParserElement.verbose_stacktrace:
raise
else:
# catch and re-raise exception from here, clears out pyparsing internal stack trace
raise exc
def split(self, instring, maxsplit=_MAX_INT, includeSeparators=False):
"""
Generator method to split a string using the given expression as a separator.
May be called with optional C{maxsplit} argument, to limit the number of splits;
and the optional C{includeSeparators} argument (default=C{False}), if the separating
matching text should be included in the split results.
Example::
punc = oneOf(list(".,;:/-!?"))
print(list(punc.split("This, this?, this sentence, is badly punctuated!")))
prints::
['This', ' this', '', ' this sentence', ' is badly punctuated', '']
"""
splits = 0
last = 0
for t,s,e in self.scanString(instring, maxMatches=maxsplit):
yield instring[last:s]
if includeSeparators:
yield t[0]
last = e
yield instring[last:]
def __add__(self, other ):
"""
Implementation of + operator - returns C{L{And}}. Adding strings to a ParserElement
converts them to L{Literal}s by default.
Example::
greet = Word(alphas) + "," + Word(alphas) + "!"
hello = "Hello, World!"
print (hello, "->", greet.parseString(hello))
Prints::
Hello, World! -> ['Hello', ',', 'World', '!']
"""
if isinstance( other, basestring ):
other = ParserElement._literalStringClass( other )
if not isinstance( other, ParserElement ):
warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
SyntaxWarning, stacklevel=2)
return None
return And( [ self, other ] )
def __radd__(self, other ):
"""
Implementation of + operator when left operand is not a C{L{ParserElement}}
"""
if isinstance( other, basestring ):
other = ParserElement._literalStringClass( other )
if not isinstance( other, ParserElement ):
warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
SyntaxWarning, stacklevel=2)
return None
return other + self
def __sub__(self, other):
"""
Implementation of - operator, returns C{L{And}} with error stop
"""
if isinstance( other, basestring ):
other = ParserElement._literalStringClass( other )
if not isinstance( other, ParserElement ):
warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
SyntaxWarning, stacklevel=2)
return None
return self + And._ErrorStop() + other
def __rsub__(self, other ):
"""
Implementation of - operator when left operand is not a C{L{ParserElement}}
"""
if isinstance( other, basestring ):
other = ParserElement._literalStringClass( other )
if not isinstance( other, ParserElement ):
warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
SyntaxWarning, stacklevel=2)
return None
return other - self
def __mul__(self,other):
"""
Implementation of * operator, allows use of C{expr * 3} in place of
C{expr + expr + expr}. Expressions may also me multiplied by a 2-integer
tuple, similar to C{{min,max}} multipliers in regular expressions. Tuples
may also include C{None} as in:
- C{expr*(n,None)} or C{expr*(n,)} is equivalent
to C{expr*n + L{ZeroOrMore}(expr)}
(read as "at least n instances of C{expr}")
- C{expr*(None,n)} is equivalent to C{expr*(0,n)}
(read as "0 to n instances of C{expr}")
- C{expr*(None,None)} is equivalent to C{L{ZeroOrMore}(expr)}
- C{expr*(1,None)} is equivalent to C{L{OneOrMore}(expr)}
Note that C{expr*(None,n)} does not raise an exception if
more than n exprs exist in the input stream; that is,
C{expr*(None,n)} does not enforce a maximum number of expr
occurrences. If this behavior is desired, then write
C{expr*(None,n) + ~expr}
"""
if isinstance(other,int):
minElements, optElements = other,0
elif isinstance(other,tuple):
other = (other + (None, None))[:2]
if other[0] is None:
other = (0, other[1])
if isinstance(other[0],int) and other[1] is None:
if other[0] == 0:
return ZeroOrMore(self)
if other[0] == 1:
return OneOrMore(self)
else:
return self*other[0] + ZeroOrMore(self)
elif isinstance(other[0],int) and isinstance(other[1],int):
minElements, optElements = other
optElements -= minElements
else:
raise TypeError("cannot multiply 'ParserElement' and ('%s','%s') objects", type(other[0]),type(other[1]))
else:
raise TypeError("cannot multiply 'ParserElement' and '%s' objects", type(other))
if minElements < 0:
raise ValueError("cannot multiply ParserElement by negative value")
if optElements < 0:
raise ValueError("second tuple value must be greater or equal to first tuple value")
if minElements == optElements == 0:
raise ValueError("cannot multiply ParserElement by 0 or (0,0)")
if (optElements):
def makeOptionalList(n):
if n>1:
return Optional(self + makeOptionalList(n-1))
else:
return Optional(self)
if minElements:
if minElements == 1:
ret = self + makeOptionalList(optElements)
else:
ret = And([self]*minElements) + makeOptionalList(optElements)
else:
ret = makeOptionalList(optElements)
else:
if minElements == 1:
ret = self
else:
ret = And([self]*minElements)
return ret
def __rmul__(self, other):
return self.__mul__(other)
def __or__(self, other ):
"""
Implementation of | operator - returns C{L{MatchFirst}}
"""
if isinstance( other, basestring ):
other = ParserElement._literalStringClass( other )
if not isinstance( other, ParserElement ):
warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
SyntaxWarning, stacklevel=2)
return None
return MatchFirst( [ self, other ] )
def __ror__(self, other ):
"""
Implementation of | operator when left operand is not a C{L{ParserElement}}
"""
if isinstance( other, basestring ):
other = ParserElement._literalStringClass( other )
if not isinstance( other, ParserElement ):
warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
SyntaxWarning, stacklevel=2)
return None
return other | self
def __xor__(self, other ):
"""
Implementation of ^ operator - returns C{L{Or}}
"""
if isinstance( other, basestring ):
other = ParserElement._literalStringClass( other )
if not isinstance( other, ParserElement ):
warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
SyntaxWarning, stacklevel=2)
return None
return Or( [ self, other ] )
def __rxor__(self, other ):
"""
Implementation of ^ operator when left operand is not a C{L{ParserElement}}
"""
if isinstance( other, basestring ):
other = ParserElement._literalStringClass( other )
if not isinstance( other, ParserElement ):
warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
SyntaxWarning, stacklevel=2)
return None
return other ^ self
def __and__(self, other ):
"""
Implementation of & operator - returns C{L{Each}}
"""
if isinstance( other, basestring ):
other = ParserElement._literalStringClass( other )
if not isinstance( other, ParserElement ):
warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
SyntaxWarning, stacklevel=2)
return None
return Each( [ self, other ] )
def __rand__(self, other ):
"""
Implementation of & operator when left operand is not a C{L{ParserElement}}
"""
if isinstance( other, basestring ):
other = ParserElement._literalStringClass( other )
if not isinstance( other, ParserElement ):
warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
SyntaxWarning, stacklevel=2)
return None
return other & self
def __invert__( self ):
"""
Implementation of ~ operator - returns C{L{NotAny}}
"""
return NotAny( self )
def __call__(self, name=None):
"""
Shortcut for C{L{setResultsName}}, with C{listAllMatches=False}.
If C{name} is given with a trailing C{'*'} character, then C{listAllMatches} will be
passed as C{True}.
If C{name} is omitted, same as calling C{L{copy}}.
Example::
# these are equivalent
userdata = Word(alphas).setResultsName("name") + Word(nums+"-").setResultsName("socsecno")
userdata = Word(alphas)("name") + Word(nums+"-")("socsecno")
"""
if name is not None:
return self.setResultsName(name)
else:
return self.copy()
def suppress( self ):
"""
Suppresses the output of this C{ParserElement}; useful to keep punctuation from
cluttering up returned output.
"""
return Suppress( self )
def leaveWhitespace( self ):
"""
Disables the skipping of whitespace before matching the characters in the
C{ParserElement}'s defined pattern. This is normally only used internally by
the pyparsing module, but may be needed in some whitespace-sensitive grammars.
"""
self.skipWhitespace = False
return self
def setWhitespaceChars( self, chars ):
"""
Overrides the default whitespace chars
"""
self.skipWhitespace = True
self.whiteChars = chars
self.copyDefaultWhiteChars = False
return self
def parseWithTabs( self ):
"""
Overrides default behavior to expand C{<TAB>}s to spaces before parsing the input string.
Must be called before C{parseString} when the input grammar contains elements that
match C{<TAB>} characters.
"""
self.keepTabs = True
return self
def ignore( self, other ):
"""
Define expression to be ignored (e.g., comments) while doing pattern
matching; may be called repeatedly, to define multiple comment or other
ignorable patterns.
Example::
patt = OneOrMore(Word(alphas))
patt.parseString('ablaj /* comment */ lskjd') # -> ['ablaj']
patt.ignore(cStyleComment)
patt.parseString('ablaj /* comment */ lskjd') # -> ['ablaj', 'lskjd']
"""
if isinstance(other, basestring):
other = Suppress(other)
if isinstance( other, Suppress ):
if other not in self.ignoreExprs:
self.ignoreExprs.append(other)
else:
self.ignoreExprs.append( Suppress( other.copy() ) )
return self
def setDebugActions( self, startAction, successAction, exceptionAction ):
"""
Enable display of debugging messages while doing pattern matching.
"""
self.debugActions = (startAction or _defaultStartDebugAction,
successAction or _defaultSuccessDebugAction,
exceptionAction or _defaultExceptionDebugAction)
self.debug = True
return self
def setDebug( self, flag=True ):
"""
Enable display of debugging messages while doing pattern matching.
Set C{flag} to True to enable, False to disable.
Example::
wd = Word(alphas).setName("alphaword")
integer = Word(nums).setName("numword")
term = wd | integer
# turn on debugging for wd
wd.setDebug()
OneOrMore(term).parseString("abc 123 xyz 890")
prints::
Match alphaword at loc 0(1,1)
Matched alphaword -> ['abc']
Match alphaword at loc 3(1,4)
Exception raised:Expected alphaword (at char 4), (line:1, col:5)
Match alphaword at loc 7(1,8)
Matched alphaword -> ['xyz']
Match alphaword at loc 11(1,12)
Exception raised:Expected alphaword (at char 12), (line:1, col:13)
Match alphaword at loc 15(1,16)
Exception raised:Expected alphaword (at char 15), (line:1, col:16)
The output shown is that produced by the default debug actions - custom debug actions can be
specified using L{setDebugActions}. Prior to attempting
to match the C{wd} expression, the debugging message C{"Match <exprname> at loc <n>(<line>,<col>)"}
is shown. Then if the parse succeeds, a C{"Matched"} message is shown, or an C{"Exception raised"}
message is shown. Also note the use of L{setName} to assign a human-readable name to the expression,
which makes debugging and exception messages easier to understand - for instance, the default
name created for the C{Word} expression without calling C{setName} is C{"W:(ABCD...)"}.
"""
if flag:
self.setDebugActions( _defaultStartDebugAction, _defaultSuccessDebugAction, _defaultExceptionDebugAction )
else:
self.debug = False
return self
def __str__( self ):
return self.name
def __repr__( self ):
return _ustr(self)
def streamline( self ):
self.streamlined = True
self.strRepr = None
return self
def checkRecursion( self, parseElementList ):
pass
def validate( self, validateTrace=[] ):
"""
Check defined expressions for valid structure, check for infinite recursive definitions.
"""
self.checkRecursion( [] )
def parseFile( self, file_or_filename, parseAll=False ):
"""
Execute the parse expression on the given file or filename.
If a filename is specified (instead of a file object),
the entire file is opened, read, and closed before parsing.
"""
try:
file_contents = file_or_filename.read()
except AttributeError:
with open(file_or_filename, "r") as f:
file_contents = f.read()
try:
return self.parseString(file_contents, parseAll)
except ParseBaseException as exc:
if ParserElement.verbose_stacktrace:
raise
else:
# catch and re-raise exception from here, clears out pyparsing internal stack trace
raise exc
def __eq__(self,other):
if isinstance(other, ParserElement):
return self is other or vars(self) == vars(other)
elif isinstance(other, basestring):
return self.matches(other)
else:
return super(ParserElement,self)==other
def __ne__(self,other):
return not (self == other)
def __hash__(self):
return hash(id(self))
def __req__(self,other):
return self == other
def __rne__(self,other):
return not (self == other)
def matches(self, testString, parseAll=True):
"""
Method for quick testing of a parser against a test string. Good for simple
inline microtests of sub expressions while building up larger parser.
Parameters:
- testString - to test against this expression for a match
- parseAll - (default=C{True}) - flag to pass to C{L{parseString}} when running tests
Example::
expr = Word(nums)
assert expr.matches("100")
"""
try:
self.parseString(_ustr(testString), parseAll=parseAll)
return True
except ParseBaseException:
return False
def runTests(self, tests, parseAll=True, comment='#', fullDump=True, printResults=True, failureTests=False):
"""
Execute the parse expression on a series of test strings, showing each
test, the parsed results or where the parse failed. Quick and easy way to
run a parse expression against a list of sample strings.
Parameters:
- tests - a list of separate test strings, or a multiline string of test strings
- parseAll - (default=C{True}) - flag to pass to C{L{parseString}} when running tests
- comment - (default=C{'#'}) - expression for indicating embedded comments in the test
string; pass None to disable comment filtering
- fullDump - (default=C{True}) - dump results as list followed by results names in nested outline;
if False, only dump nested list
- printResults - (default=C{True}) prints test output to stdout
- failureTests - (default=C{False}) indicates if these tests are expected to fail parsing
Returns: a (success, results) tuple, where success indicates that all tests succeeded
(or failed if C{failureTests} is True), and the results contain a list of lines of each
test's output
Example::
number_expr = pyparsing_common.number.copy()
result = number_expr.runTests('''
# unsigned integer
100
# negative integer
-100
# float with scientific notation
6.02e23
# integer with scientific notation
1e-12
''')
print("Success" if result[0] else "Failed!")
result = number_expr.runTests('''
# stray character
100Z
# missing leading digit before '.'
-.100
# too many '.'
3.14.159
''', failureTests=True)
print("Success" if result[0] else "Failed!")
prints::
# unsigned integer
100
[100]
# negative integer
-100
[-100]
# float with scientific notation
6.02e23
[6.02e+23]
# integer with scientific notation
1e-12
[1e-12]
Success
# stray character
100Z
^
FAIL: Expected end of text (at char 3), (line:1, col:4)
# missing leading digit before '.'
-.100
^
FAIL: Expected {real number with scientific notation | real number | signed integer} (at char 0), (line:1, col:1)
# too many '.'
3.14.159
^
FAIL: Expected end of text (at char 4), (line:1, col:5)
Success
Each test string must be on a single line. If you want to test a string that spans multiple
lines, create a test like this::
expr.runTest(r"this is a test\\n of strings that spans \\n 3 lines")
(Note that this is a raw string literal, you must include the leading 'r'.)
"""
if isinstance(tests, basestring):
tests = list(map(str.strip, tests.rstrip().splitlines()))
if isinstance(comment, basestring):
comment = Literal(comment)
allResults = []
comments = []
success = True
for t in tests:
if comment is not None and comment.matches(t, False) or comments and not t:
comments.append(t)
continue
if not t:
continue
out = ['\n'.join(comments), t]
comments = []
try:
t = t.replace(r'\n','\n')
result = self.parseString(t, parseAll=parseAll)
out.append(result.dump(full=fullDump))
success = success and not failureTests
except ParseBaseException as pe:
fatal = "(FATAL)" if isinstance(pe, ParseFatalException) else ""
if '\n' in t:
out.append(line(pe.loc, t))
out.append(' '*(col(pe.loc,t)-1) + '^' + fatal)
else:
out.append(' '*pe.loc + '^' + fatal)
out.append("FAIL: " + str(pe))
success = success and failureTests
result = pe
except Exception as exc:
out.append("FAIL-EXCEPTION: " + str(exc))
success = success and failureTests
result = exc
if printResults:
if fullDump:
out.append('')
print('\n'.join(out))
allResults.append((t, result))
return success, allResults
class Token(ParserElement):
"""
Abstract C{ParserElement} subclass, for defining atomic matching patterns.
"""
def __init__( self ):
super(Token,self).__init__( savelist=False )
class Empty(Token):
"""
An empty token, will always match.
"""
def __init__( self ):
super(Empty,self).__init__()
self.name = "Empty"
self.mayReturnEmpty = True
self.mayIndexError = False
class NoMatch(Token):
"""
A token that will never match.
"""
def __init__( self ):
super(NoMatch,self).__init__()
self.name = "NoMatch"
self.mayReturnEmpty = True
self.mayIndexError = False
self.errmsg = "Unmatchable token"
def parseImpl( self, instring, loc, doActions=True ):
raise ParseException(instring, loc, self.errmsg, self)
class Literal(Token):
"""
Token to exactly match a specified string.
Example::
Literal('blah').parseString('blah') # -> ['blah']
Literal('blah').parseString('blahfooblah') # -> ['blah']
Literal('blah').parseString('bla') # -> Exception: Expected "blah"
For case-insensitive matching, use L{CaselessLiteral}.
For keyword matching (force word break before and after the matched string),
use L{Keyword} or L{CaselessKeyword}.
"""
def __init__( self, matchString ):
super(Literal,self).__init__()
self.match = matchString
self.matchLen = len(matchString)
try:
self.firstMatchChar = matchString[0]
except IndexError:
warnings.warn("null string passed to Literal; use Empty() instead",
SyntaxWarning, stacklevel=2)
self.__class__ = Empty
self.name = '"%s"' % _ustr(self.match)
self.errmsg = "Expected " + self.name
self.mayReturnEmpty = False
self.mayIndexError = False
# Performance tuning: this routine gets called a *lot*
# if this is a single character match string and the first character matches,
# short-circuit as quickly as possible, and avoid calling startswith
#~ @profile
def parseImpl( self, instring, loc, doActions=True ):
if (instring[loc] == self.firstMatchChar and
(self.matchLen==1 or instring.startswith(self.match,loc)) ):
return loc+self.matchLen, self.match
raise ParseException(instring, loc, self.errmsg, self)
_L = Literal
ParserElement._literalStringClass = Literal
class Keyword(Token):
"""
Token to exactly match a specified string as a keyword, that is, it must be
immediately followed by a non-keyword character. Compare with C{L{Literal}}:
- C{Literal("if")} will match the leading C{'if'} in C{'ifAndOnlyIf'}.
- C{Keyword("if")} will not; it will only match the leading C{'if'} in C{'if x=1'}, or C{'if(y==2)'}
Accepts two optional constructor arguments in addition to the keyword string:
- C{identChars} is a string of characters that would be valid identifier characters,
defaulting to all alphanumerics + "_" and "$"
- C{caseless} allows case-insensitive matching, default is C{False}.
Example::
Keyword("start").parseString("start") # -> ['start']
Keyword("start").parseString("starting") # -> Exception
For case-insensitive matching, use L{CaselessKeyword}.
"""
DEFAULT_KEYWORD_CHARS = alphanums+"_$"
def __init__( self, matchString, identChars=None, caseless=False ):
super(Keyword,self).__init__()
if identChars is None:
identChars = Keyword.DEFAULT_KEYWORD_CHARS
self.match = matchString
self.matchLen = len(matchString)
try:
self.firstMatchChar = matchString[0]
except IndexError:
warnings.warn("null string passed to Keyword; use Empty() instead",
SyntaxWarning, stacklevel=2)
self.name = '"%s"' % self.match
self.errmsg = "Expected " + self.name
self.mayReturnEmpty = False
self.mayIndexError = False
self.caseless = caseless
if caseless:
self.caselessmatch = matchString.upper()
identChars = identChars.upper()
self.identChars = set(identChars)
def parseImpl( self, instring, loc, doActions=True ):
if self.caseless:
if ( (instring[ loc:loc+self.matchLen ].upper() == self.caselessmatch) and
(loc >= len(instring)-self.matchLen or instring[loc+self.matchLen].upper() not in self.identChars) and
(loc == 0 or instring[loc-1].upper() not in self.identChars) ):
return loc+self.matchLen, self.match
else:
if (instring[loc] == self.firstMatchChar and
(self.matchLen==1 or instring.startswith(self.match,loc)) and
(loc >= len(instring)-self.matchLen or instring[loc+self.matchLen] not in self.identChars) and
(loc == 0 or instring[loc-1] not in self.identChars) ):
return loc+self.matchLen, self.match
raise ParseException(instring, loc, self.errmsg, self)
def copy(self):
c = super(Keyword,self).copy()
c.identChars = Keyword.DEFAULT_KEYWORD_CHARS
return c
@staticmethod
def setDefaultKeywordChars( chars ):
"""Overrides the default Keyword chars
"""
Keyword.DEFAULT_KEYWORD_CHARS = chars
class CaselessLiteral(Literal):
"""
Token to match a specified string, ignoring case of letters.
Note: the matched results will always be in the case of the given
match string, NOT the case of the input text.
Example::
OneOrMore(CaselessLiteral("CMD")).parseString("cmd CMD Cmd10") # -> ['CMD', 'CMD', 'CMD']
(Contrast with example for L{CaselessKeyword}.)
"""
def __init__( self, matchString ):
super(CaselessLiteral,self).__init__( matchString.upper() )
# Preserve the defining literal.
self.returnString = matchString
self.name = "'%s'" % self.returnString
self.errmsg = "Expected " + self.name
def parseImpl( self, instring, loc, doActions=True ):
if instring[ loc:loc+self.matchLen ].upper() == self.match:
return loc+self.matchLen, self.returnString
raise ParseException(instring, loc, self.errmsg, self)
class CaselessKeyword(Keyword):
"""
Caseless version of L{Keyword}.
Example::
OneOrMore(CaselessKeyword("CMD")).parseString("cmd CMD Cmd10") # -> ['CMD', 'CMD']
(Contrast with example for L{CaselessLiteral}.)
"""
def __init__( self, matchString, identChars=None ):
super(CaselessKeyword,self).__init__( matchString, identChars, caseless=True )
def parseImpl( self, instring, loc, doActions=True ):
if ( (instring[ loc:loc+self.matchLen ].upper() == self.caselessmatch) and
(loc >= len(instring)-self.matchLen or instring[loc+self.matchLen].upper() not in self.identChars) ):
return loc+self.matchLen, self.match
raise ParseException(instring, loc, self.errmsg, self)
class CloseMatch(Token):
"""
A variation on L{Literal} which matches "close" matches, that is,
strings with at most 'n' mismatching characters. C{CloseMatch} takes parameters:
- C{match_string} - string to be matched
- C{maxMismatches} - (C{default=1}) maximum number of mismatches allowed to count as a match
The results from a successful parse will contain the matched text from the input string and the following named results:
- C{mismatches} - a list of the positions within the match_string where mismatches were found
- C{original} - the original match_string used to compare against the input string
If C{mismatches} is an empty list, then the match was an exact match.
Example::
patt = CloseMatch("ATCATCGAATGGA")
patt.parseString("ATCATCGAAXGGA") # -> (['ATCATCGAAXGGA'], {'mismatches': [[9]], 'original': ['ATCATCGAATGGA']})
patt.parseString("ATCAXCGAAXGGA") # -> Exception: Expected 'ATCATCGAATGGA' (with up to 1 mismatches) (at char 0), (line:1, col:1)
# exact match
patt.parseString("ATCATCGAATGGA") # -> (['ATCATCGAATGGA'], {'mismatches': [[]], 'original': ['ATCATCGAATGGA']})
# close match allowing up to 2 mismatches
patt = CloseMatch("ATCATCGAATGGA", maxMismatches=2)
patt.parseString("ATCAXCGAAXGGA") # -> (['ATCAXCGAAXGGA'], {'mismatches': [[4, 9]], 'original': ['ATCATCGAATGGA']})
"""
def __init__(self, match_string, maxMismatches=1):
super(CloseMatch,self).__init__()
self.name = match_string
self.match_string = match_string
self.maxMismatches = maxMismatches
self.errmsg = "Expected %r (with up to %d mismatches)" % (self.match_string, self.maxMismatches)
self.mayIndexError = False
self.mayReturnEmpty = False
def parseImpl( self, instring, loc, doActions=True ):
start = loc
instrlen = len(instring)
maxloc = start + len(self.match_string)
if maxloc <= instrlen:
match_string = self.match_string
match_stringloc = 0
mismatches = []
maxMismatches = self.maxMismatches
for match_stringloc,s_m in enumerate(zip(instring[loc:maxloc], self.match_string)):
src,mat = s_m
if src != mat:
mismatches.append(match_stringloc)
if len(mismatches) > maxMismatches:
break
else:
loc = match_stringloc + 1
results = ParseResults([instring[start:loc]])
results['original'] = self.match_string
results['mismatches'] = mismatches
return loc, results
raise ParseException(instring, loc, self.errmsg, self)
class Word(Token):
"""
Token for matching words composed of allowed character sets.
Defined with string containing all allowed initial characters,
an optional string containing allowed body characters (if omitted,
defaults to the initial character set), and an optional minimum,
maximum, and/or exact length. The default value for C{min} is 1 (a
minimum value < 1 is not valid); the default values for C{max} and C{exact}
are 0, meaning no maximum or exact length restriction. An optional
C{excludeChars} parameter can list characters that might be found in
the input C{bodyChars} string; useful to define a word of all printables
except for one or two characters, for instance.
L{srange} is useful for defining custom character set strings for defining
C{Word} expressions, using range notation from regular expression character sets.
A common mistake is to use C{Word} to match a specific literal string, as in
C{Word("Address")}. Remember that C{Word} uses the string argument to define
I{sets} of matchable characters. This expression would match "Add", "AAA",
"dAred", or any other word made up of the characters 'A', 'd', 'r', 'e', and 's'.
To match an exact literal string, use L{Literal} or L{Keyword}.
pyparsing includes helper strings for building Words:
- L{alphas}
- L{nums}
- L{alphanums}
- L{hexnums}
- L{alphas8bit} (alphabetic characters in ASCII range 128-255 - accented, tilded, umlauted, etc.)
- L{punc8bit} (non-alphabetic characters in ASCII range 128-255 - currency, symbols, superscripts, diacriticals, etc.)
- L{printables} (any non-whitespace character)
Example::
# a word composed of digits
integer = Word(nums) # equivalent to Word("0123456789") or Word(srange("0-9"))
# a word with a leading capital, and zero or more lowercase
capital_word = Word(alphas.upper(), alphas.lower())
# hostnames are alphanumeric, with leading alpha, and '-'
hostname = Word(alphas, alphanums+'-')
# roman numeral (not a strict parser, accepts invalid mix of characters)
roman = Word("IVXLCDM")
# any string of non-whitespace characters, except for ','
csv_value = Word(printables, excludeChars=",")
"""
def __init__( self, initChars, bodyChars=None, min=1, max=0, exact=0, asKeyword=False, excludeChars=None ):
super(Word,self).__init__()
if excludeChars:
initChars = ''.join(c for c in initChars if c not in excludeChars)
if bodyChars:
bodyChars = ''.join(c for c in bodyChars if c not in excludeChars)
self.initCharsOrig = initChars
self.initChars = set(initChars)
if bodyChars :
self.bodyCharsOrig = bodyChars
self.bodyChars = set(bodyChars)
else:
self.bodyCharsOrig = initChars
self.bodyChars = set(initChars)
self.maxSpecified = max > 0
if min < 1:
raise ValueError("cannot specify a minimum length < 1; use Optional(Word()) if zero-length word is permitted")
self.minLen = min
if max > 0:
self.maxLen = max
else:
self.maxLen = _MAX_INT
if exact > 0:
self.maxLen = exact
self.minLen = exact
self.name = _ustr(self)
self.errmsg = "Expected " + self.name
self.mayIndexError = False
self.asKeyword = asKeyword
if ' ' not in self.initCharsOrig+self.bodyCharsOrig and (min==1 and max==0 and exact==0):
if self.bodyCharsOrig == self.initCharsOrig:
self.reString = "[%s]+" % _escapeRegexRangeChars(self.initCharsOrig)
elif len(self.initCharsOrig) == 1:
self.reString = "%s[%s]*" % \
(re.escape(self.initCharsOrig),
_escapeRegexRangeChars(self.bodyCharsOrig),)
else:
self.reString = "[%s][%s]*" % \
(_escapeRegexRangeChars(self.initCharsOrig),
_escapeRegexRangeChars(self.bodyCharsOrig),)
if self.asKeyword:
self.reString = r"\b"+self.reString+r"\b"
try:
self.re = re.compile( self.reString )
except Exception:
self.re = None
def parseImpl( self, instring, loc, doActions=True ):
if self.re:
result = self.re.match(instring,loc)
if not result:
raise ParseException(instring, loc, self.errmsg, self)
loc = result.end()
return loc, result.group()
if not(instring[ loc ] in self.initChars):
raise ParseException(instring, loc, self.errmsg, self)
start = loc
loc += 1
instrlen = len(instring)
bodychars = self.bodyChars
maxloc = start + self.maxLen
maxloc = min( maxloc, instrlen )
while loc < maxloc and instring[loc] in bodychars:
loc += 1
throwException = False
if loc - start < self.minLen:
throwException = True
if self.maxSpecified and loc < instrlen and instring[loc] in bodychars:
throwException = True
if self.asKeyword:
if (start>0 and instring[start-1] in bodychars) or (loc<instrlen and instring[loc] in bodychars):
throwException = True
if throwException:
raise ParseException(instring, loc, self.errmsg, self)
return loc, instring[start:loc]
def __str__( self ):
try:
return super(Word,self).__str__()
except Exception:
pass
if self.strRepr is None:
def charsAsStr(s):
if len(s)>4:
return s[:4]+"..."
else:
return s
if ( self.initCharsOrig != self.bodyCharsOrig ):
self.strRepr = "W:(%s,%s)" % ( charsAsStr(self.initCharsOrig), charsAsStr(self.bodyCharsOrig) )
else:
self.strRepr = "W:(%s)" % charsAsStr(self.initCharsOrig)
return self.strRepr
class Regex(Token):
r"""
Token for matching strings that match a given regular expression.
Defined with string specifying the regular expression in a form recognized by the inbuilt Python re module.
If the given regex contains named groups (defined using C{(?P<name>...)}), these will be preserved as
named parse results.
Example::
realnum = Regex(r"[+-]?\d+\.\d*")
date = Regex(r'(?P<year>\d{4})-(?P<month>\d\d?)-(?P<day>\d\d?)')
# ref: http://stackoverflow.com/questions/267399/how-do-you-match-only-valid-roman-numerals-with-a-regular-expression
roman = Regex(r"M{0,4}(CM|CD|D?C{0,3})(XC|XL|L?X{0,3})(IX|IV|V?I{0,3})")
"""
compiledREtype = type(re.compile("[A-Z]"))
def __init__( self, pattern, flags=0):
"""The parameters C{pattern} and C{flags} are passed to the C{re.compile()} function as-is. See the Python C{re} module for an explanation of the acceptable patterns and flags."""
super(Regex,self).__init__()
if isinstance(pattern, basestring):
if not pattern:
warnings.warn("null string passed to Regex; use Empty() instead",
SyntaxWarning, stacklevel=2)
self.pattern = pattern
self.flags = flags
try:
self.re = re.compile(self.pattern, self.flags)
self.reString = self.pattern
except sre_constants.error:
warnings.warn("invalid pattern (%s) passed to Regex" % pattern,
SyntaxWarning, stacklevel=2)
raise
elif isinstance(pattern, Regex.compiledREtype):
self.re = pattern
self.pattern = \
self.reString = str(pattern)
self.flags = flags
else:
raise ValueError("Regex may only be constructed with a string or a compiled RE object")
self.name = _ustr(self)
self.errmsg = "Expected " + self.name
self.mayIndexError = False
self.mayReturnEmpty = True
def parseImpl( self, instring, loc, doActions=True ):
result = self.re.match(instring,loc)
if not result:
raise ParseException(instring, loc, self.errmsg, self)
loc = result.end()
d = result.groupdict()
ret = ParseResults(result.group())
if d:
for k in d:
ret[k] = d[k]
return loc,ret
def __str__( self ):
try:
return super(Regex,self).__str__()
except Exception:
pass
if self.strRepr is None:
self.strRepr = "Re:(%s)" % repr(self.pattern)
return self.strRepr
class QuotedString(Token):
r"""
Token for matching strings that are delimited by quoting characters.
Defined with the following parameters:
- quoteChar - string of one or more characters defining the quote delimiting string
- escChar - character to escape quotes, typically backslash (default=C{None})
- escQuote - special quote sequence to escape an embedded quote string (such as SQL's "" to escape an embedded ") (default=C{None})
- multiline - boolean indicating whether quotes can span multiple lines (default=C{False})
- unquoteResults - boolean indicating whether the matched text should be unquoted (default=C{True})
- endQuoteChar - string of one or more characters defining the end of the quote delimited string (default=C{None} => same as quoteChar)
- convertWhitespaceEscapes - convert escaped whitespace (C{'\t'}, C{'\n'}, etc.) to actual whitespace (default=C{True})
Example::
qs = QuotedString('"')
print(qs.searchString('lsjdf "This is the quote" sldjf'))
complex_qs = QuotedString('{{', endQuoteChar='}}')
print(complex_qs.searchString('lsjdf {{This is the "quote"}} sldjf'))
sql_qs = QuotedString('"', escQuote='""')
print(sql_qs.searchString('lsjdf "This is the quote with ""embedded"" quotes" sldjf'))
prints::
[['This is the quote']]
[['This is the "quote"']]
[['This is the quote with "embedded" quotes']]
"""
def __init__( self, quoteChar, escChar=None, escQuote=None, multiline=False, unquoteResults=True, endQuoteChar=None, convertWhitespaceEscapes=True):
super(QuotedString,self).__init__()
# remove white space from quote chars - wont work anyway
quoteChar = quoteChar.strip()
if not quoteChar:
warnings.warn("quoteChar cannot be the empty string",SyntaxWarning,stacklevel=2)
raise SyntaxError()
if endQuoteChar is None:
endQuoteChar = quoteChar
else:
endQuoteChar = endQuoteChar.strip()
if not endQuoteChar:
warnings.warn("endQuoteChar cannot be the empty string",SyntaxWarning,stacklevel=2)
raise SyntaxError()
self.quoteChar = quoteChar
self.quoteCharLen = len(quoteChar)
self.firstQuoteChar = quoteChar[0]
self.endQuoteChar = endQuoteChar
self.endQuoteCharLen = len(endQuoteChar)
self.escChar = escChar
self.escQuote = escQuote
self.unquoteResults = unquoteResults
self.convertWhitespaceEscapes = convertWhitespaceEscapes
if multiline:
self.flags = re.MULTILINE | re.DOTALL
self.pattern = r'%s(?:[^%s%s]' % \
( re.escape(self.quoteChar),
_escapeRegexRangeChars(self.endQuoteChar[0]),
(escChar is not None and _escapeRegexRangeChars(escChar) or '') )
else:
self.flags = 0
self.pattern = r'%s(?:[^%s\n\r%s]' % \
( re.escape(self.quoteChar),
_escapeRegexRangeChars(self.endQuoteChar[0]),
(escChar is not None and _escapeRegexRangeChars(escChar) or '') )
if len(self.endQuoteChar) > 1:
self.pattern += (
'|(?:' + ')|(?:'.join("%s[^%s]" % (re.escape(self.endQuoteChar[:i]),
_escapeRegexRangeChars(self.endQuoteChar[i]))
for i in range(len(self.endQuoteChar)-1,0,-1)) + ')'
)
if escQuote:
self.pattern += (r'|(?:%s)' % re.escape(escQuote))
if escChar:
self.pattern += (r'|(?:%s.)' % re.escape(escChar))
self.escCharReplacePattern = re.escape(self.escChar)+"(.)"
self.pattern += (r')*%s' % re.escape(self.endQuoteChar))
try:
self.re = re.compile(self.pattern, self.flags)
self.reString = self.pattern
except sre_constants.error:
warnings.warn("invalid pattern (%s) passed to Regex" % self.pattern,
SyntaxWarning, stacklevel=2)
raise
self.name = _ustr(self)
self.errmsg = "Expected " + self.name
self.mayIndexError = False
self.mayReturnEmpty = True
def parseImpl( self, instring, loc, doActions=True ):
result = instring[loc] == self.firstQuoteChar and self.re.match(instring,loc) or None
if not result:
raise ParseException(instring, loc, self.errmsg, self)
loc = result.end()
ret = result.group()
if self.unquoteResults:
# strip off quotes
ret = ret[self.quoteCharLen:-self.endQuoteCharLen]
if isinstance(ret,basestring):
# replace escaped whitespace
if '\\' in ret and self.convertWhitespaceEscapes:
ws_map = {
r'\t' : '\t',
r'\n' : '\n',
r'\f' : '\f',
r'\r' : '\r',
}
for wslit,wschar in ws_map.items():
ret = ret.replace(wslit, wschar)
# replace escaped characters
if self.escChar:
ret = re.sub(self.escCharReplacePattern, r"\g<1>", ret)
# replace escaped quotes
if self.escQuote:
ret = ret.replace(self.escQuote, self.endQuoteChar)
return loc, ret
def __str__( self ):
try:
return super(QuotedString,self).__str__()
except Exception:
pass
if self.strRepr is None:
self.strRepr = "quoted string, starting with %s ending with %s" % (self.quoteChar, self.endQuoteChar)
return self.strRepr
class CharsNotIn(Token):
"""
Token for matching words composed of characters I{not} in a given set (will
include whitespace in matched characters if not listed in the provided exclusion set - see example).
Defined with string containing all disallowed characters, and an optional
minimum, maximum, and/or exact length. The default value for C{min} is 1 (a
minimum value < 1 is not valid); the default values for C{max} and C{exact}
are 0, meaning no maximum or exact length restriction.
Example::
# define a comma-separated-value as anything that is not a ','
csv_value = CharsNotIn(',')
print(delimitedList(csv_value).parseString("dkls,lsdkjf,s12 34,@!#,213"))
prints::
['dkls', 'lsdkjf', 's12 34', '@!#', '213']
"""
def __init__( self, notChars, min=1, max=0, exact=0 ):
super(CharsNotIn,self).__init__()
self.skipWhitespace = False
self.notChars = notChars
if min < 1:
raise ValueError("cannot specify a minimum length < 1; use Optional(CharsNotIn()) if zero-length char group is permitted")
self.minLen = min
if max > 0:
self.maxLen = max
else:
self.maxLen = _MAX_INT
if exact > 0:
self.maxLen = exact
self.minLen = exact
self.name = _ustr(self)
self.errmsg = "Expected " + self.name
self.mayReturnEmpty = ( self.minLen == 0 )
self.mayIndexError = False
def parseImpl( self, instring, loc, doActions=True ):
if instring[loc] in self.notChars:
raise ParseException(instring, loc, self.errmsg, self)
start = loc
loc += 1
notchars = self.notChars
maxlen = min( start+self.maxLen, len(instring) )
while loc < maxlen and \
(instring[loc] not in notchars):
loc += 1
if loc - start < self.minLen:
raise ParseException(instring, loc, self.errmsg, self)
return loc, instring[start:loc]
def __str__( self ):
try:
return super(CharsNotIn, self).__str__()
except Exception:
pass
if self.strRepr is None:
if len(self.notChars) > 4:
self.strRepr = "!W:(%s...)" % self.notChars[:4]
else:
self.strRepr = "!W:(%s)" % self.notChars
return self.strRepr
class White(Token):
"""
Special matching class for matching whitespace. Normally, whitespace is ignored
by pyparsing grammars. This class is included when some whitespace structures
are significant. Define with a string containing the whitespace characters to be
matched; default is C{" \\t\\r\\n"}. Also takes optional C{min}, C{max}, and C{exact} arguments,
as defined for the C{L{Word}} class.
"""
whiteStrs = {
" " : "<SPC>",
"\t": "<TAB>",
"\n": "<LF>",
"\r": "<CR>",
"\f": "<FF>",
}
def __init__(self, ws=" \t\r\n", min=1, max=0, exact=0):
super(White,self).__init__()
self.matchWhite = ws
self.setWhitespaceChars( "".join(c for c in self.whiteChars if c not in self.matchWhite) )
#~ self.leaveWhitespace()
self.name = ("".join(White.whiteStrs[c] for c in self.matchWhite))
self.mayReturnEmpty = True
self.errmsg = "Expected " + self.name
self.minLen = min
if max > 0:
self.maxLen = max
else:
self.maxLen = _MAX_INT
if exact > 0:
self.maxLen = exact
self.minLen = exact
def parseImpl( self, instring, loc, doActions=True ):
if not(instring[ loc ] in self.matchWhite):
raise ParseException(instring, loc, self.errmsg, self)
start = loc
loc += 1
maxloc = start + self.maxLen
maxloc = min( maxloc, len(instring) )
while loc < maxloc and instring[loc] in self.matchWhite:
loc += 1
if loc - start < self.minLen:
raise ParseException(instring, loc, self.errmsg, self)
return loc, instring[start:loc]
class _PositionToken(Token):
def __init__( self ):
super(_PositionToken,self).__init__()
self.name=self.__class__.__name__
self.mayReturnEmpty = True
self.mayIndexError = False
class GoToColumn(_PositionToken):
"""
Token to advance to a specific column of input text; useful for tabular report scraping.
"""
def __init__( self, colno ):
super(GoToColumn,self).__init__()
self.col = colno
def preParse( self, instring, loc ):
if col(loc,instring) != self.col:
instrlen = len(instring)
if self.ignoreExprs:
loc = self._skipIgnorables( instring, loc )
while loc < instrlen and instring[loc].isspace() and col( loc, instring ) != self.col :
loc += 1
return loc
def parseImpl( self, instring, loc, doActions=True ):
thiscol = col( loc, instring )
if thiscol > self.col:
raise ParseException( instring, loc, "Text not in expected column", self )
newloc = loc + self.col - thiscol
ret = instring[ loc: newloc ]
return newloc, ret
class LineStart(_PositionToken):
"""
Matches if current position is at the beginning of a line within the parse string
Example::
test = '''\
AAA this line
AAA and this line
AAA but not this one
B AAA and definitely not this one
'''
for t in (LineStart() + 'AAA' + restOfLine).searchString(test):
print(t)
Prints::
['AAA', ' this line']
['AAA', ' and this line']
"""
def __init__( self ):
super(LineStart,self).__init__()
self.errmsg = "Expected start of line"
def parseImpl( self, instring, loc, doActions=True ):
if col(loc, instring) == 1:
return loc, []
raise ParseException(instring, loc, self.errmsg, self)
class LineEnd(_PositionToken):
"""
Matches if current position is at the end of a line within the parse string
"""
def __init__( self ):
super(LineEnd,self).__init__()
self.setWhitespaceChars( ParserElement.DEFAULT_WHITE_CHARS.replace("\n","") )
self.errmsg = "Expected end of line"
def parseImpl( self, instring, loc, doActions=True ):
if loc<len(instring):
if instring[loc] == "\n":
return loc+1, "\n"
else:
raise ParseException(instring, loc, self.errmsg, self)
elif loc == len(instring):
return loc+1, []
else:
raise ParseException(instring, loc, self.errmsg, self)
class StringStart(_PositionToken):
"""
Matches if current position is at the beginning of the parse string
"""
def __init__( self ):
super(StringStart,self).__init__()
self.errmsg = "Expected start of text"
def parseImpl( self, instring, loc, doActions=True ):
if loc != 0:
# see if entire string up to here is just whitespace and ignoreables
if loc != self.preParse( instring, 0 ):
raise ParseException(instring, loc, self.errmsg, self)
return loc, []
class StringEnd(_PositionToken):
"""
Matches if current position is at the end of the parse string
"""
def __init__( self ):
super(StringEnd,self).__init__()
self.errmsg = "Expected end of text"
def parseImpl( self, instring, loc, doActions=True ):
if loc < len(instring):
raise ParseException(instring, loc, self.errmsg, self)
elif loc == len(instring):
return loc+1, []
elif loc > len(instring):
return loc, []
else:
raise ParseException(instring, loc, self.errmsg, self)
class WordStart(_PositionToken):
"""
Matches if the current position is at the beginning of a Word, and
is not preceded by any character in a given set of C{wordChars}
(default=C{printables}). To emulate the C{\b} behavior of regular expressions,
use C{WordStart(alphanums)}. C{WordStart} will also match at the beginning of
the string being parsed, or at the beginning of a line.
"""
def __init__(self, wordChars = printables):
super(WordStart,self).__init__()
self.wordChars = set(wordChars)
self.errmsg = "Not at the start of a word"
def parseImpl(self, instring, loc, doActions=True ):
if loc != 0:
if (instring[loc-1] in self.wordChars or
instring[loc] not in self.wordChars):
raise ParseException(instring, loc, self.errmsg, self)
return loc, []
class WordEnd(_PositionToken):
"""
Matches if the current position is at the end of a Word, and
is not followed by any character in a given set of C{wordChars}
(default=C{printables}). To emulate the C{\b} behavior of regular expressions,
use C{WordEnd(alphanums)}. C{WordEnd} will also match at the end of
the string being parsed, or at the end of a line.
"""
def __init__(self, wordChars = printables):
super(WordEnd,self).__init__()
self.wordChars = set(wordChars)
self.skipWhitespace = False
self.errmsg = "Not at the end of a word"
def parseImpl(self, instring, loc, doActions=True ):
instrlen = len(instring)
if instrlen>0 and loc<instrlen:
if (instring[loc] in self.wordChars or
instring[loc-1] not in self.wordChars):
raise ParseException(instring, loc, self.errmsg, self)
return loc, []
class ParseExpression(ParserElement):
"""
Abstract subclass of ParserElement, for combining and post-processing parsed tokens.
"""
def __init__( self, exprs, savelist = False ):
super(ParseExpression,self).__init__(savelist)
if isinstance( exprs, _generatorType ):
exprs = list(exprs)
if isinstance( exprs, basestring ):
self.exprs = [ ParserElement._literalStringClass( exprs ) ]
elif isinstance( exprs, collections.Iterable ):
exprs = list(exprs)
# if sequence of strings provided, wrap with Literal
if all(isinstance(expr, basestring) for expr in exprs):
exprs = map(ParserElement._literalStringClass, exprs)
self.exprs = list(exprs)
else:
try:
self.exprs = list( exprs )
except TypeError:
self.exprs = [ exprs ]
self.callPreparse = False
def __getitem__( self, i ):
return self.exprs[i]
def append( self, other ):
self.exprs.append( other )
self.strRepr = None
return self
def leaveWhitespace( self ):
"""Extends C{leaveWhitespace} defined in base class, and also invokes C{leaveWhitespace} on
all contained expressions."""
self.skipWhitespace = False
self.exprs = [ e.copy() for e in self.exprs ]
for e in self.exprs:
e.leaveWhitespace()
return self
def ignore( self, other ):
if isinstance( other, Suppress ):
if other not in self.ignoreExprs:
super( ParseExpression, self).ignore( other )
for e in self.exprs:
e.ignore( self.ignoreExprs[-1] )
else:
super( ParseExpression, self).ignore( other )
for e in self.exprs:
e.ignore( self.ignoreExprs[-1] )
return self
def __str__( self ):
try:
return super(ParseExpression,self).__str__()
except Exception:
pass
if self.strRepr is None:
self.strRepr = "%s:(%s)" % ( self.__class__.__name__, _ustr(self.exprs) )
return self.strRepr
def streamline( self ):
super(ParseExpression,self).streamline()
for e in self.exprs:
e.streamline()
# collapse nested And's of the form And( And( And( a,b), c), d) to And( a,b,c,d )
# but only if there are no parse actions or resultsNames on the nested And's
# (likewise for Or's and MatchFirst's)
if ( len(self.exprs) == 2 ):
other = self.exprs[0]
if ( isinstance( other, self.__class__ ) and
not(other.parseAction) and
other.resultsName is None and
not other.debug ):
self.exprs = other.exprs[:] + [ self.exprs[1] ]
self.strRepr = None
self.mayReturnEmpty |= other.mayReturnEmpty
self.mayIndexError |= other.mayIndexError
other = self.exprs[-1]
if ( isinstance( other, self.__class__ ) and
not(other.parseAction) and
other.resultsName is None and
not other.debug ):
self.exprs = self.exprs[:-1] + other.exprs[:]
self.strRepr = None
self.mayReturnEmpty |= other.mayReturnEmpty
self.mayIndexError |= other.mayIndexError
self.errmsg = "Expected " + _ustr(self)
return self
def setResultsName( self, name, listAllMatches=False ):
ret = super(ParseExpression,self).setResultsName(name,listAllMatches)
return ret
def validate( self, validateTrace=[] ):
tmp = validateTrace[:]+[self]
for e in self.exprs:
e.validate(tmp)
self.checkRecursion( [] )
def copy(self):
ret = super(ParseExpression,self).copy()
ret.exprs = [e.copy() for e in self.exprs]
return ret
class And(ParseExpression):
"""
Requires all given C{ParseExpression}s to be found in the given order.
Expressions may be separated by whitespace.
May be constructed using the C{'+'} operator.
May also be constructed using the C{'-'} operator, which will suppress backtracking.
Example::
integer = Word(nums)
name_expr = OneOrMore(Word(alphas))
expr = And([integer("id"),name_expr("name"),integer("age")])
# more easily written as:
expr = integer("id") + name_expr("name") + integer("age")
"""
class _ErrorStop(Empty):
def __init__(self, *args, **kwargs):
super(And._ErrorStop,self).__init__(*args, **kwargs)
self.name = '-'
self.leaveWhitespace()
def __init__( self, exprs, savelist = True ):
super(And,self).__init__(exprs, savelist)
self.mayReturnEmpty = all(e.mayReturnEmpty for e in self.exprs)
self.setWhitespaceChars( self.exprs[0].whiteChars )
self.skipWhitespace = self.exprs[0].skipWhitespace
self.callPreparse = True
def parseImpl( self, instring, loc, doActions=True ):
# pass False as last arg to _parse for first element, since we already
# pre-parsed the string as part of our And pre-parsing
loc, resultlist = self.exprs[0]._parse( instring, loc, doActions, callPreParse=False )
errorStop = False
for e in self.exprs[1:]:
if isinstance(e, And._ErrorStop):
errorStop = True
continue
if errorStop:
try:
loc, exprtokens = e._parse( instring, loc, doActions )
except ParseSyntaxException:
raise
except ParseBaseException as pe:
pe.__traceback__ = None
raise ParseSyntaxException._from_exception(pe)
except IndexError:
raise ParseSyntaxException(instring, len(instring), self.errmsg, self)
else:
loc, exprtokens = e._parse( instring, loc, doActions )
if exprtokens or exprtokens.haskeys():
resultlist += exprtokens
return loc, resultlist
def __iadd__(self, other ):
if isinstance( other, basestring ):
other = ParserElement._literalStringClass( other )
return self.append( other ) #And( [ self, other ] )
def checkRecursion( self, parseElementList ):
subRecCheckList = parseElementList[:] + [ self ]
for e in self.exprs:
e.checkRecursion( subRecCheckList )
if not e.mayReturnEmpty:
break
def __str__( self ):
if hasattr(self,"name"):
return self.name
if self.strRepr is None:
self.strRepr = "{" + " ".join(_ustr(e) for e in self.exprs) + "}"
return self.strRepr
class Or(ParseExpression):
"""
Requires that at least one C{ParseExpression} is found.
If two expressions match, the expression that matches the longest string will be used.
May be constructed using the C{'^'} operator.
Example::
# construct Or using '^' operator
number = Word(nums) ^ Combine(Word(nums) + '.' + Word(nums))
print(number.searchString("123 3.1416 789"))
prints::
[['123'], ['3.1416'], ['789']]
"""
def __init__( self, exprs, savelist = False ):
super(Or,self).__init__(exprs, savelist)
if self.exprs:
self.mayReturnEmpty = any(e.mayReturnEmpty for e in self.exprs)
else:
self.mayReturnEmpty = True
def parseImpl( self, instring, loc, doActions=True ):
maxExcLoc = -1
maxException = None
matches = []
for e in self.exprs:
try:
loc2 = e.tryParse( instring, loc )
except ParseException as err:
err.__traceback__ = None
if err.loc > maxExcLoc:
maxException = err
maxExcLoc = err.loc
except IndexError:
if len(instring) > maxExcLoc:
maxException = ParseException(instring,len(instring),e.errmsg,self)
maxExcLoc = len(instring)
else:
# save match among all matches, to retry longest to shortest
matches.append((loc2, e))
if matches:
matches.sort(key=lambda x: -x[0])
for _,e in matches:
try:
return e._parse( instring, loc, doActions )
except ParseException as err:
err.__traceback__ = None
if err.loc > maxExcLoc:
maxException = err
maxExcLoc = err.loc
if maxException is not None:
maxException.msg = self.errmsg
raise maxException
else:
raise ParseException(instring, loc, "no defined alternatives to match", self)
def __ixor__(self, other ):
if isinstance( other, basestring ):
other = ParserElement._literalStringClass( other )
return self.append( other ) #Or( [ self, other ] )
def __str__( self ):
if hasattr(self,"name"):
return self.name
if self.strRepr is None:
self.strRepr = "{" + " ^ ".join(_ustr(e) for e in self.exprs) + "}"
return self.strRepr
def checkRecursion( self, parseElementList ):
subRecCheckList = parseElementList[:] + [ self ]
for e in self.exprs:
e.checkRecursion( subRecCheckList )
class MatchFirst(ParseExpression):
"""
Requires that at least one C{ParseExpression} is found.
If two expressions match, the first one listed is the one that will match.
May be constructed using the C{'|'} operator.
Example::
# construct MatchFirst using '|' operator
# watch the order of expressions to match
number = Word(nums) | Combine(Word(nums) + '.' + Word(nums))
print(number.searchString("123 3.1416 789")) # Fail! -> [['123'], ['3'], ['1416'], ['789']]
# put more selective expression first
number = Combine(Word(nums) + '.' + Word(nums)) | Word(nums)
print(number.searchString("123 3.1416 789")) # Better -> [['123'], ['3.1416'], ['789']]
"""
def __init__( self, exprs, savelist = False ):
super(MatchFirst,self).__init__(exprs, savelist)
if self.exprs:
self.mayReturnEmpty = any(e.mayReturnEmpty for e in self.exprs)
else:
self.mayReturnEmpty = True
def parseImpl( self, instring, loc, doActions=True ):
maxExcLoc = -1
maxException = None
for e in self.exprs:
try:
ret = e._parse( instring, loc, doActions )
return ret
except ParseException as err:
if err.loc > maxExcLoc:
maxException = err
maxExcLoc = err.loc
except IndexError:
if len(instring) > maxExcLoc:
maxException = ParseException(instring,len(instring),e.errmsg,self)
maxExcLoc = len(instring)
# only got here if no expression matched, raise exception for match that made it the furthest
else:
if maxException is not None:
maxException.msg = self.errmsg
raise maxException
else:
raise ParseException(instring, loc, "no defined alternatives to match", self)
def __ior__(self, other ):
if isinstance( other, basestring ):
other = ParserElement._literalStringClass( other )
return self.append( other ) #MatchFirst( [ self, other ] )
def __str__( self ):
if hasattr(self,"name"):
return self.name
if self.strRepr is None:
self.strRepr = "{" + " | ".join(_ustr(e) for e in self.exprs) + "}"
return self.strRepr
def checkRecursion( self, parseElementList ):
subRecCheckList = parseElementList[:] + [ self ]
for e in self.exprs:
e.checkRecursion( subRecCheckList )
class Each(ParseExpression):
"""
Requires all given C{ParseExpression}s to be found, but in any order.
Expressions may be separated by whitespace.
May be constructed using the C{'&'} operator.
Example::
color = oneOf("RED ORANGE YELLOW GREEN BLUE PURPLE BLACK WHITE BROWN")
shape_type = oneOf("SQUARE CIRCLE TRIANGLE STAR HEXAGON OCTAGON")
integer = Word(nums)
shape_attr = "shape:" + shape_type("shape")
posn_attr = "posn:" + Group(integer("x") + ',' + integer("y"))("posn")
color_attr = "color:" + color("color")
size_attr = "size:" + integer("size")
# use Each (using operator '&') to accept attributes in any order
# (shape and posn are required, color and size are optional)
shape_spec = shape_attr & posn_attr & Optional(color_attr) & Optional(size_attr)
shape_spec.runTests('''
shape: SQUARE color: BLACK posn: 100, 120
shape: CIRCLE size: 50 color: BLUE posn: 50,80
color:GREEN size:20 shape:TRIANGLE posn:20,40
'''
)
prints::
shape: SQUARE color: BLACK posn: 100, 120
['shape:', 'SQUARE', 'color:', 'BLACK', 'posn:', ['100', ',', '120']]
- color: BLACK
- posn: ['100', ',', '120']
- x: 100
- y: 120
- shape: SQUARE
shape: CIRCLE size: 50 color: BLUE posn: 50,80
['shape:', 'CIRCLE', 'size:', '50', 'color:', 'BLUE', 'posn:', ['50', ',', '80']]
- color: BLUE
- posn: ['50', ',', '80']
- x: 50
- y: 80
- shape: CIRCLE
- size: 50
color: GREEN size: 20 shape: TRIANGLE posn: 20,40
['color:', 'GREEN', 'size:', '20', 'shape:', 'TRIANGLE', 'posn:', ['20', ',', '40']]
- color: GREEN
- posn: ['20', ',', '40']
- x: 20
- y: 40
- shape: TRIANGLE
- size: 20
"""
def __init__( self, exprs, savelist = True ):
super(Each,self).__init__(exprs, savelist)
self.mayReturnEmpty = all(e.mayReturnEmpty for e in self.exprs)
self.skipWhitespace = True
self.initExprGroups = True
def parseImpl( self, instring, loc, doActions=True ):
if self.initExprGroups:
self.opt1map = dict((id(e.expr),e) for e in self.exprs if isinstance(e,Optional))
opt1 = [ e.expr for e in self.exprs if isinstance(e,Optional) ]
opt2 = [ e for e in self.exprs if e.mayReturnEmpty and not isinstance(e,Optional)]
self.optionals = opt1 + opt2
self.multioptionals = [ e.expr for e in self.exprs if isinstance(e,ZeroOrMore) ]
self.multirequired = [ e.expr for e in self.exprs if isinstance(e,OneOrMore) ]
self.required = [ e for e in self.exprs if not isinstance(e,(Optional,ZeroOrMore,OneOrMore)) ]
self.required += self.multirequired
self.initExprGroups = False
tmpLoc = loc
tmpReqd = self.required[:]
tmpOpt = self.optionals[:]
matchOrder = []
keepMatching = True
while keepMatching:
tmpExprs = tmpReqd + tmpOpt + self.multioptionals + self.multirequired
failed = []
for e in tmpExprs:
try:
tmpLoc = e.tryParse( instring, tmpLoc )
except ParseException:
failed.append(e)
else:
matchOrder.append(self.opt1map.get(id(e),e))
if e in tmpReqd:
tmpReqd.remove(e)
elif e in tmpOpt:
tmpOpt.remove(e)
if len(failed) == len(tmpExprs):
keepMatching = False
if tmpReqd:
missing = ", ".join(_ustr(e) for e in tmpReqd)
raise ParseException(instring,loc,"Missing one or more required elements (%s)" % missing )
# add any unmatched Optionals, in case they have default values defined
matchOrder += [e for e in self.exprs if isinstance(e,Optional) and e.expr in tmpOpt]
resultlist = []
for e in matchOrder:
loc,results = e._parse(instring,loc,doActions)
resultlist.append(results)
finalResults = sum(resultlist, ParseResults([]))
return loc, finalResults
def __str__( self ):
if hasattr(self,"name"):
return self.name
if self.strRepr is None:
self.strRepr = "{" + " & ".join(_ustr(e) for e in self.exprs) + "}"
return self.strRepr
def checkRecursion( self, parseElementList ):
subRecCheckList = parseElementList[:] + [ self ]
for e in self.exprs:
e.checkRecursion( subRecCheckList )
class ParseElementEnhance(ParserElement):
"""
Abstract subclass of C{ParserElement}, for combining and post-processing parsed tokens.
"""
def __init__( self, expr, savelist=False ):
super(ParseElementEnhance,self).__init__(savelist)
if isinstance( expr, basestring ):
if issubclass(ParserElement._literalStringClass, Token):
expr = ParserElement._literalStringClass(expr)
else:
expr = ParserElement._literalStringClass(Literal(expr))
self.expr = expr
self.strRepr = None
if expr is not None:
self.mayIndexError = expr.mayIndexError
self.mayReturnEmpty = expr.mayReturnEmpty
self.setWhitespaceChars( expr.whiteChars )
self.skipWhitespace = expr.skipWhitespace
self.saveAsList = expr.saveAsList
self.callPreparse = expr.callPreparse
self.ignoreExprs.extend(expr.ignoreExprs)
def parseImpl( self, instring, loc, doActions=True ):
if self.expr is not None:
return self.expr._parse( instring, loc, doActions, callPreParse=False )
else:
raise ParseException("",loc,self.errmsg,self)
def leaveWhitespace( self ):
self.skipWhitespace = False
self.expr = self.expr.copy()
if self.expr is not None:
self.expr.leaveWhitespace()
return self
def ignore( self, other ):
if isinstance( other, Suppress ):
if other not in self.ignoreExprs:
super( ParseElementEnhance, self).ignore( other )
if self.expr is not None:
self.expr.ignore( self.ignoreExprs[-1] )
else:
super( ParseElementEnhance, self).ignore( other )
if self.expr is not None:
self.expr.ignore( self.ignoreExprs[-1] )
return self
def streamline( self ):
super(ParseElementEnhance,self).streamline()
if self.expr is not None:
self.expr.streamline()
return self
def checkRecursion( self, parseElementList ):
if self in parseElementList:
raise RecursiveGrammarException( parseElementList+[self] )
subRecCheckList = parseElementList[:] + [ self ]
if self.expr is not None:
self.expr.checkRecursion( subRecCheckList )
def validate( self, validateTrace=[] ):
tmp = validateTrace[:]+[self]
if self.expr is not None:
self.expr.validate(tmp)
self.checkRecursion( [] )
def __str__( self ):
try:
return super(ParseElementEnhance,self).__str__()
except Exception:
pass
if self.strRepr is None and self.expr is not None:
self.strRepr = "%s:(%s)" % ( self.__class__.__name__, _ustr(self.expr) )
return self.strRepr
class FollowedBy(ParseElementEnhance):
"""
Lookahead matching of the given parse expression. C{FollowedBy}
does I{not} advance the parsing position within the input string, it only
verifies that the specified parse expression matches at the current
position. C{FollowedBy} always returns a null token list.
Example::
# use FollowedBy to match a label only if it is followed by a ':'
data_word = Word(alphas)
label = data_word + FollowedBy(':')
attr_expr = Group(label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
OneOrMore(attr_expr).parseString("shape: SQUARE color: BLACK posn: upper left").pprint()
prints::
[['shape', 'SQUARE'], ['color', 'BLACK'], ['posn', 'upper left']]
"""
def __init__( self, expr ):
super(FollowedBy,self).__init__(expr)
self.mayReturnEmpty = True
def parseImpl( self, instring, loc, doActions=True ):
self.expr.tryParse( instring, loc )
return loc, []
class NotAny(ParseElementEnhance):
"""
Lookahead to disallow matching with the given parse expression. C{NotAny}
does I{not} advance the parsing position within the input string, it only
verifies that the specified parse expression does I{not} match at the current
position. Also, C{NotAny} does I{not} skip over leading whitespace. C{NotAny}
always returns a null token list. May be constructed using the '~' operator.
Example::
"""
def __init__( self, expr ):
super(NotAny,self).__init__(expr)
#~ self.leaveWhitespace()
self.skipWhitespace = False # do NOT use self.leaveWhitespace(), don't want to propagate to exprs
self.mayReturnEmpty = True
self.errmsg = "Found unwanted token, "+_ustr(self.expr)
def parseImpl( self, instring, loc, doActions=True ):
if self.expr.canParseNext(instring, loc):
raise ParseException(instring, loc, self.errmsg, self)
return loc, []
def __str__( self ):
if hasattr(self,"name"):
return self.name
if self.strRepr is None:
self.strRepr = "~{" + _ustr(self.expr) + "}"
return self.strRepr
class _MultipleMatch(ParseElementEnhance):
def __init__( self, expr, stopOn=None):
super(_MultipleMatch, self).__init__(expr)
self.saveAsList = True
ender = stopOn
if isinstance(ender, basestring):
ender = ParserElement._literalStringClass(ender)
self.not_ender = ~ender if ender is not None else None
def parseImpl( self, instring, loc, doActions=True ):
self_expr_parse = self.expr._parse
self_skip_ignorables = self._skipIgnorables
check_ender = self.not_ender is not None
if check_ender:
try_not_ender = self.not_ender.tryParse
# must be at least one (but first see if we are the stopOn sentinel;
# if so, fail)
if check_ender:
try_not_ender(instring, loc)
loc, tokens = self_expr_parse( instring, loc, doActions, callPreParse=False )
try:
hasIgnoreExprs = (not not self.ignoreExprs)
while 1:
if check_ender:
try_not_ender(instring, loc)
if hasIgnoreExprs:
preloc = self_skip_ignorables( instring, loc )
else:
preloc = loc
loc, tmptokens = self_expr_parse( instring, preloc, doActions )
if tmptokens or tmptokens.haskeys():
tokens += tmptokens
except (ParseException,IndexError):
pass
return loc, tokens
class OneOrMore(_MultipleMatch):
"""
Repetition of one or more of the given expression.
Parameters:
- expr - expression that must match one or more times
- stopOn - (default=C{None}) - expression for a terminating sentinel
(only required if the sentinel would ordinarily match the repetition
expression)
Example::
data_word = Word(alphas)
label = data_word + FollowedBy(':')
attr_expr = Group(label + Suppress(':') + OneOrMore(data_word).setParseAction(' '.join))
text = "shape: SQUARE posn: upper left color: BLACK"
OneOrMore(attr_expr).parseString(text).pprint() # Fail! read 'color' as data instead of next label -> [['shape', 'SQUARE color']]
# use stopOn attribute for OneOrMore to avoid reading label string as part of the data
attr_expr = Group(label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
OneOrMore(attr_expr).parseString(text).pprint() # Better -> [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'BLACK']]
# could also be written as
(attr_expr * (1,)).parseString(text).pprint()
"""
def __str__( self ):
if hasattr(self,"name"):
return self.name
if self.strRepr is None:
self.strRepr = "{" + _ustr(self.expr) + "}..."
return self.strRepr
class ZeroOrMore(_MultipleMatch):
"""
Optional repetition of zero or more of the given expression.
Parameters:
- expr - expression that must match zero or more times
- stopOn - (default=C{None}) - expression for a terminating sentinel
(only required if the sentinel would ordinarily match the repetition
expression)
Example: similar to L{OneOrMore}
"""
def __init__( self, expr, stopOn=None):
super(ZeroOrMore,self).__init__(expr, stopOn=stopOn)
self.mayReturnEmpty = True
def parseImpl( self, instring, loc, doActions=True ):
try:
return super(ZeroOrMore, self).parseImpl(instring, loc, doActions)
except (ParseException,IndexError):
return loc, []
def __str__( self ):
if hasattr(self,"name"):
return self.name
if self.strRepr is None:
self.strRepr = "[" + _ustr(self.expr) + "]..."
return self.strRepr
class _NullToken(object):
def __bool__(self):
return False
__nonzero__ = __bool__
def __str__(self):
return ""
_optionalNotMatched = _NullToken()
class Optional(ParseElementEnhance):
"""
Optional matching of the given expression.
Parameters:
- expr - expression that must match zero or more times
- default (optional) - value to be returned if the optional expression is not found.
Example::
# US postal code can be a 5-digit zip, plus optional 4-digit qualifier
zip = Combine(Word(nums, exact=5) + Optional('-' + Word(nums, exact=4)))
zip.runTests('''
# traditional ZIP code
12345
# ZIP+4 form
12101-0001
# invalid ZIP
98765-
''')
prints::
# traditional ZIP code
12345
['12345']
# ZIP+4 form
12101-0001
['12101-0001']
# invalid ZIP
98765-
^
FAIL: Expected end of text (at char 5), (line:1, col:6)
"""
def __init__( self, expr, default=_optionalNotMatched ):
super(Optional,self).__init__( expr, savelist=False )
self.saveAsList = self.expr.saveAsList
self.defaultValue = default
self.mayReturnEmpty = True
def parseImpl( self, instring, loc, doActions=True ):
try:
loc, tokens = self.expr._parse( instring, loc, doActions, callPreParse=False )
except (ParseException,IndexError):
if self.defaultValue is not _optionalNotMatched:
if self.expr.resultsName:
tokens = ParseResults([ self.defaultValue ])
tokens[self.expr.resultsName] = self.defaultValue
else:
tokens = [ self.defaultValue ]
else:
tokens = []
return loc, tokens
def __str__( self ):
if hasattr(self,"name"):
return self.name
if self.strRepr is None:
self.strRepr = "[" + _ustr(self.expr) + "]"
return self.strRepr
class SkipTo(ParseElementEnhance):
"""
Token for skipping over all undefined text until the matched expression is found.
Parameters:
- expr - target expression marking the end of the data to be skipped
- include - (default=C{False}) if True, the target expression is also parsed
(the skipped text and target expression are returned as a 2-element list).
- ignore - (default=C{None}) used to define grammars (typically quoted strings and
comments) that might contain false matches to the target expression
- failOn - (default=C{None}) define expressions that are not allowed to be
included in the skipped test; if found before the target expression is found,
the SkipTo is not a match
Example::
report = '''
Outstanding Issues Report - 1 Jan 2000
# | Severity | Description | Days Open
-----+----------+-------------------------------------------+-----------
101 | Critical | Intermittent system crash | 6
94 | Cosmetic | Spelling error on Login ('log|n') | 14
79 | Minor | System slow when running too many reports | 47
'''
integer = Word(nums)
SEP = Suppress('|')
# use SkipTo to simply match everything up until the next SEP
# - ignore quoted strings, so that a '|' character inside a quoted string does not match
# - parse action will call token.strip() for each matched token, i.e., the description body
string_data = SkipTo(SEP, ignore=quotedString)
string_data.setParseAction(tokenMap(str.strip))
ticket_expr = (integer("issue_num") + SEP
+ string_data("sev") + SEP
+ string_data("desc") + SEP
+ integer("days_open"))
for tkt in ticket_expr.searchString(report):
print tkt.dump()
prints::
['101', 'Critical', 'Intermittent system crash', '6']
- days_open: 6
- desc: Intermittent system crash
- issue_num: 101
- sev: Critical
['94', 'Cosmetic', "Spelling error on Login ('log|n')", '14']
- days_open: 14
- desc: Spelling error on Login ('log|n')
- issue_num: 94
- sev: Cosmetic
['79', 'Minor', 'System slow when running too many reports', '47']
- days_open: 47
- desc: System slow when running too many reports
- issue_num: 79
- sev: Minor
"""
def __init__( self, other, include=False, ignore=None, failOn=None ):
super( SkipTo, self ).__init__( other )
self.ignoreExpr = ignore
self.mayReturnEmpty = True
self.mayIndexError = False
self.includeMatch = include
self.asList = False
if isinstance(failOn, basestring):
self.failOn = ParserElement._literalStringClass(failOn)
else:
self.failOn = failOn
self.errmsg = "No match found for "+_ustr(self.expr)
def parseImpl( self, instring, loc, doActions=True ):
startloc = loc
instrlen = len(instring)
expr = self.expr
expr_parse = self.expr._parse
self_failOn_canParseNext = self.failOn.canParseNext if self.failOn is not None else None
self_ignoreExpr_tryParse = self.ignoreExpr.tryParse if self.ignoreExpr is not None else None
tmploc = loc
while tmploc <= instrlen:
if self_failOn_canParseNext is not None:
# break if failOn expression matches
if self_failOn_canParseNext(instring, tmploc):
break
if self_ignoreExpr_tryParse is not None:
# advance past ignore expressions
while 1:
try:
tmploc = self_ignoreExpr_tryParse(instring, tmploc)
except ParseBaseException:
break
try:
expr_parse(instring, tmploc, doActions=False, callPreParse=False)
except (ParseException, IndexError):
# no match, advance loc in string
tmploc += 1
else:
# matched skipto expr, done
break
else:
# ran off the end of the input string without matching skipto expr, fail
raise ParseException(instring, loc, self.errmsg, self)
# build up return values
loc = tmploc
skiptext = instring[startloc:loc]
skipresult = ParseResults(skiptext)
if self.includeMatch:
loc, mat = expr_parse(instring,loc,doActions,callPreParse=False)
skipresult += mat
return loc, skipresult
class Forward(ParseElementEnhance):
"""
Forward declaration of an expression to be defined later -
used for recursive grammars, such as algebraic infix notation.
When the expression is known, it is assigned to the C{Forward} variable using the '<<' operator.
Note: take care when assigning to C{Forward} not to overlook precedence of operators.
Specifically, '|' has a lower precedence than '<<', so that::
fwdExpr << a | b | c
will actually be evaluated as::
(fwdExpr << a) | b | c
thereby leaving b and c out as parseable alternatives. It is recommended that you
explicitly group the values inserted into the C{Forward}::
fwdExpr << (a | b | c)
Converting to use the '<<=' operator instead will avoid this problem.
See L{ParseResults.pprint} for an example of a recursive parser created using
C{Forward}.
"""
def __init__( self, other=None ):
super(Forward,self).__init__( other, savelist=False )
def __lshift__( self, other ):
if isinstance( other, basestring ):
other = ParserElement._literalStringClass(other)
self.expr = other
self.strRepr = None
self.mayIndexError = self.expr.mayIndexError
self.mayReturnEmpty = self.expr.mayReturnEmpty
self.setWhitespaceChars( self.expr.whiteChars )
self.skipWhitespace = self.expr.skipWhitespace
self.saveAsList = self.expr.saveAsList
self.ignoreExprs.extend(self.expr.ignoreExprs)
return self
def __ilshift__(self, other):
return self << other
def leaveWhitespace( self ):
self.skipWhitespace = False
return self
def streamline( self ):
if not self.streamlined:
self.streamlined = True
if self.expr is not None:
self.expr.streamline()
return self
def validate( self, validateTrace=[] ):
if self not in validateTrace:
tmp = validateTrace[:]+[self]
if self.expr is not None:
self.expr.validate(tmp)
self.checkRecursion([])
def __str__( self ):
if hasattr(self,"name"):
return self.name
return self.__class__.__name__ + ": ..."
# stubbed out for now - creates awful memory and perf issues
self._revertClass = self.__class__
self.__class__ = _ForwardNoRecurse
try:
if self.expr is not None:
retString = _ustr(self.expr)
else:
retString = "None"
finally:
self.__class__ = self._revertClass
return self.__class__.__name__ + ": " + retString
def copy(self):
if self.expr is not None:
return super(Forward,self).copy()
else:
ret = Forward()
ret <<= self
return ret
class _ForwardNoRecurse(Forward):
def __str__( self ):
return "..."
class TokenConverter(ParseElementEnhance):
"""
Abstract subclass of C{ParseExpression}, for converting parsed results.
"""
def __init__( self, expr, savelist=False ):
super(TokenConverter,self).__init__( expr )#, savelist )
self.saveAsList = False
class Combine(TokenConverter):
"""
Converter to concatenate all matching tokens to a single string.
By default, the matching patterns must also be contiguous in the input string;
this can be disabled by specifying C{'adjacent=False'} in the constructor.
Example::
real = Word(nums) + '.' + Word(nums)
print(real.parseString('3.1416')) # -> ['3', '.', '1416']
# will also erroneously match the following
print(real.parseString('3. 1416')) # -> ['3', '.', '1416']
real = Combine(Word(nums) + '.' + Word(nums))
print(real.parseString('3.1416')) # -> ['3.1416']
# no match when there are internal spaces
print(real.parseString('3. 1416')) # -> Exception: Expected W:(0123...)
"""
def __init__( self, expr, joinString="", adjacent=True ):
super(Combine,self).__init__( expr )
# suppress whitespace-stripping in contained parse expressions, but re-enable it on the Combine itself
if adjacent:
self.leaveWhitespace()
self.adjacent = adjacent
self.skipWhitespace = True
self.joinString = joinString
self.callPreparse = True
def ignore( self, other ):
if self.adjacent:
ParserElement.ignore(self, other)
else:
super( Combine, self).ignore( other )
return self
def postParse( self, instring, loc, tokenlist ):
retToks = tokenlist.copy()
del retToks[:]
retToks += ParseResults([ "".join(tokenlist._asStringList(self.joinString)) ], modal=self.modalResults)
if self.resultsName and retToks.haskeys():
return [ retToks ]
else:
return retToks
class Group(TokenConverter):
"""
Converter to return the matched tokens as a list - useful for returning tokens of C{L{ZeroOrMore}} and C{L{OneOrMore}} expressions.
Example::
ident = Word(alphas)
num = Word(nums)
term = ident | num
func = ident + Optional(delimitedList(term))
print(func.parseString("fn a,b,100")) # -> ['fn', 'a', 'b', '100']
func = ident + Group(Optional(delimitedList(term)))
print(func.parseString("fn a,b,100")) # -> ['fn', ['a', 'b', '100']]
"""
def __init__( self, expr ):
super(Group,self).__init__( expr )
self.saveAsList = True
def postParse( self, instring, loc, tokenlist ):
return [ tokenlist ]
class Dict(TokenConverter):
"""
Converter to return a repetitive expression as a list, but also as a dictionary.
Each element can also be referenced using the first token in the expression as its key.
Useful for tabular report scraping when the first column can be used as a item key.
Example::
data_word = Word(alphas)
label = data_word + FollowedBy(':')
attr_expr = Group(label + Suppress(':') + OneOrMore(data_word).setParseAction(' '.join))
text = "shape: SQUARE posn: upper left color: light blue texture: burlap"
attr_expr = (label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
# print attributes as plain groups
print(OneOrMore(attr_expr).parseString(text).dump())
# instead of OneOrMore(expr), parse using Dict(OneOrMore(Group(expr))) - Dict will auto-assign names
result = Dict(OneOrMore(Group(attr_expr))).parseString(text)
print(result.dump())
# access named fields as dict entries, or output as dict
print(result['shape'])
print(result.asDict())
prints::
['shape', 'SQUARE', 'posn', 'upper left', 'color', 'light blue', 'texture', 'burlap']
[['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'light blue'], ['texture', 'burlap']]
- color: light blue
- posn: upper left
- shape: SQUARE
- texture: burlap
SQUARE
{'color': 'light blue', 'posn': 'upper left', 'texture': 'burlap', 'shape': 'SQUARE'}
See more examples at L{ParseResults} of accessing fields by results name.
"""
def __init__( self, expr ):
super(Dict,self).__init__( expr )
self.saveAsList = True
def postParse( self, instring, loc, tokenlist ):
for i,tok in enumerate(tokenlist):
if len(tok) == 0:
continue
ikey = tok[0]
if isinstance(ikey,int):
ikey = _ustr(tok[0]).strip()
if len(tok)==1:
tokenlist[ikey] = _ParseResultsWithOffset("",i)
elif len(tok)==2 and not isinstance(tok[1],ParseResults):
tokenlist[ikey] = _ParseResultsWithOffset(tok[1],i)
else:
dictvalue = tok.copy() #ParseResults(i)
del dictvalue[0]
if len(dictvalue)!= 1 or (isinstance(dictvalue,ParseResults) and dictvalue.haskeys()):
tokenlist[ikey] = _ParseResultsWithOffset(dictvalue,i)
else:
tokenlist[ikey] = _ParseResultsWithOffset(dictvalue[0],i)
if self.resultsName:
return [ tokenlist ]
else:
return tokenlist
class Suppress(TokenConverter):
"""
Converter for ignoring the results of a parsed expression.
Example::
source = "a, b, c,d"
wd = Word(alphas)
wd_list1 = wd + ZeroOrMore(',' + wd)
print(wd_list1.parseString(source))
# often, delimiters that are useful during parsing are just in the
# way afterward - use Suppress to keep them out of the parsed output
wd_list2 = wd + ZeroOrMore(Suppress(',') + wd)
print(wd_list2.parseString(source))
prints::
['a', ',', 'b', ',', 'c', ',', 'd']
['a', 'b', 'c', 'd']
(See also L{delimitedList}.)
"""
def postParse( self, instring, loc, tokenlist ):
return []
def suppress( self ):
return self
class OnlyOnce(object):
"""
Wrapper for parse actions, to ensure they are only called once.
"""
def __init__(self, methodCall):
self.callable = _trim_arity(methodCall)
self.called = False
def __call__(self,s,l,t):
if not self.called:
results = self.callable(s,l,t)
self.called = True
return results
raise ParseException(s,l,"")
def reset(self):
self.called = False
def traceParseAction(f):
"""
Decorator for debugging parse actions.
When the parse action is called, this decorator will print C{">> entering I{method-name}(line:I{current_source_line}, I{parse_location}, I{matched_tokens})".}
When the parse action completes, the decorator will print C{"<<"} followed by the returned value, or any exception that the parse action raised.
Example::
wd = Word(alphas)
@traceParseAction
def remove_duplicate_chars(tokens):
return ''.join(sorted(set(''.join(tokens)))
wds = OneOrMore(wd).setParseAction(remove_duplicate_chars)
print(wds.parseString("slkdjs sld sldd sdlf sdljf"))
prints::
>>entering remove_duplicate_chars(line: 'slkdjs sld sldd sdlf sdljf', 0, (['slkdjs', 'sld', 'sldd', 'sdlf', 'sdljf'], {}))
<<leaving remove_duplicate_chars (ret: 'dfjkls')
['dfjkls']
"""
f = _trim_arity(f)
def z(*paArgs):
thisFunc = f.__name__
s,l,t = paArgs[-3:]
if len(paArgs)>3:
thisFunc = paArgs[0].__class__.__name__ + '.' + thisFunc
sys.stderr.write( ">>entering %s(line: '%s', %d, %r)\n" % (thisFunc,line(l,s),l,t) )
try:
ret = f(*paArgs)
except Exception as exc:
sys.stderr.write( "<<leaving %s (exception: %s)\n" % (thisFunc,exc) )
raise
sys.stderr.write( "<<leaving %s (ret: %r)\n" % (thisFunc,ret) )
return ret
try:
z.__name__ = f.__name__
except AttributeError:
pass
return z
#
# global helpers
#
def delimitedList( expr, delim=",", combine=False ):
"""
Helper to define a delimited list of expressions - the delimiter defaults to ','.
By default, the list elements and delimiters can have intervening whitespace, and
comments, but this can be overridden by passing C{combine=True} in the constructor.
If C{combine} is set to C{True}, the matching tokens are returned as a single token
string, with the delimiters included; otherwise, the matching tokens are returned
as a list of tokens, with the delimiters suppressed.
Example::
delimitedList(Word(alphas)).parseString("aa,bb,cc") # -> ['aa', 'bb', 'cc']
delimitedList(Word(hexnums), delim=':', combine=True).parseString("AA:BB:CC:DD:EE") # -> ['AA:BB:CC:DD:EE']
"""
dlName = _ustr(expr)+" ["+_ustr(delim)+" "+_ustr(expr)+"]..."
if combine:
return Combine( expr + ZeroOrMore( delim + expr ) ).setName(dlName)
else:
return ( expr + ZeroOrMore( Suppress( delim ) + expr ) ).setName(dlName)
def countedArray( expr, intExpr=None ):
"""
Helper to define a counted list of expressions.
This helper defines a pattern of the form::
integer expr expr expr...
where the leading integer tells how many expr expressions follow.
The matched tokens returns the array of expr tokens as a list - the leading count token is suppressed.
If C{intExpr} is specified, it should be a pyparsing expression that produces an integer value.
Example::
countedArray(Word(alphas)).parseString('2 ab cd ef') # -> ['ab', 'cd']
# in this parser, the leading integer value is given in binary,
# '10' indicating that 2 values are in the array
binaryConstant = Word('01').setParseAction(lambda t: int(t[0], 2))
countedArray(Word(alphas), intExpr=binaryConstant).parseString('10 ab cd ef') # -> ['ab', 'cd']
"""
arrayExpr = Forward()
def countFieldParseAction(s,l,t):
n = t[0]
arrayExpr << (n and Group(And([expr]*n)) or Group(empty))
return []
if intExpr is None:
intExpr = Word(nums).setParseAction(lambda t:int(t[0]))
else:
intExpr = intExpr.copy()
intExpr.setName("arrayLen")
intExpr.addParseAction(countFieldParseAction, callDuringTry=True)
return ( intExpr + arrayExpr ).setName('(len) ' + _ustr(expr) + '...')
def _flatten(L):
ret = []
for i in L:
if isinstance(i,list):
ret.extend(_flatten(i))
else:
ret.append(i)
return ret
def matchPreviousLiteral(expr):
"""
Helper to define an expression that is indirectly defined from
the tokens matched in a previous expression, that is, it looks
for a 'repeat' of a previous expression. For example::
first = Word(nums)
second = matchPreviousLiteral(first)
matchExpr = first + ":" + second
will match C{"1:1"}, but not C{"1:2"}. Because this matches a
previous literal, will also match the leading C{"1:1"} in C{"1:10"}.
If this is not desired, use C{matchPreviousExpr}.
Do I{not} use with packrat parsing enabled.
"""
rep = Forward()
def copyTokenToRepeater(s,l,t):
if t:
if len(t) == 1:
rep << t[0]
else:
# flatten t tokens
tflat = _flatten(t.asList())
rep << And(Literal(tt) for tt in tflat)
else:
rep << Empty()
expr.addParseAction(copyTokenToRepeater, callDuringTry=True)
rep.setName('(prev) ' + _ustr(expr))
return rep
def matchPreviousExpr(expr):
"""
Helper to define an expression that is indirectly defined from
the tokens matched in a previous expression, that is, it looks
for a 'repeat' of a previous expression. For example::
first = Word(nums)
second = matchPreviousExpr(first)
matchExpr = first + ":" + second
will match C{"1:1"}, but not C{"1:2"}. Because this matches by
expressions, will I{not} match the leading C{"1:1"} in C{"1:10"};
the expressions are evaluated first, and then compared, so
C{"1"} is compared with C{"10"}.
Do I{not} use with packrat parsing enabled.
"""
rep = Forward()
e2 = expr.copy()
rep <<= e2
def copyTokenToRepeater(s,l,t):
matchTokens = _flatten(t.asList())
def mustMatchTheseTokens(s,l,t):
theseTokens = _flatten(t.asList())
if theseTokens != matchTokens:
raise ParseException("",0,"")
rep.setParseAction( mustMatchTheseTokens, callDuringTry=True )
expr.addParseAction(copyTokenToRepeater, callDuringTry=True)
rep.setName('(prev) ' + _ustr(expr))
return rep
def _escapeRegexRangeChars(s):
#~ escape these chars: ^-]
for c in r"\^-]":
s = s.replace(c,_bslash+c)
s = s.replace("\n",r"\n")
s = s.replace("\t",r"\t")
return _ustr(s)
def oneOf( strs, caseless=False, useRegex=True ):
"""
Helper to quickly define a set of alternative Literals, and makes sure to do
longest-first testing when there is a conflict, regardless of the input order,
but returns a C{L{MatchFirst}} for best performance.
Parameters:
- strs - a string of space-delimited literals, or a collection of string literals
- caseless - (default=C{False}) - treat all literals as caseless
- useRegex - (default=C{True}) - as an optimization, will generate a Regex
object; otherwise, will generate a C{MatchFirst} object (if C{caseless=True}, or
if creating a C{Regex} raises an exception)
Example::
comp_oper = oneOf("< = > <= >= !=")
var = Word(alphas)
number = Word(nums)
term = var | number
comparison_expr = term + comp_oper + term
print(comparison_expr.searchString("B = 12 AA=23 B<=AA AA>12"))
prints::
[['B', '=', '12'], ['AA', '=', '23'], ['B', '<=', 'AA'], ['AA', '>', '12']]
"""
if caseless:
isequal = ( lambda a,b: a.upper() == b.upper() )
masks = ( lambda a,b: b.upper().startswith(a.upper()) )
parseElementClass = CaselessLiteral
else:
isequal = ( lambda a,b: a == b )
masks = ( lambda a,b: b.startswith(a) )
parseElementClass = Literal
symbols = []
if isinstance(strs,basestring):
symbols = strs.split()
elif isinstance(strs, collections.Iterable):
symbols = list(strs)
else:
warnings.warn("Invalid argument to oneOf, expected string or iterable",
SyntaxWarning, stacklevel=2)
if not symbols:
return NoMatch()
i = 0
while i < len(symbols)-1:
cur = symbols[i]
for j,other in enumerate(symbols[i+1:]):
if ( isequal(other, cur) ):
del symbols[i+j+1]
break
elif ( masks(cur, other) ):
del symbols[i+j+1]
symbols.insert(i,other)
cur = other
break
else:
i += 1
if not caseless and useRegex:
#~ print (strs,"->", "|".join( [ _escapeRegexChars(sym) for sym in symbols] ))
try:
if len(symbols)==len("".join(symbols)):
return Regex( "[%s]" % "".join(_escapeRegexRangeChars(sym) for sym in symbols) ).setName(' | '.join(symbols))
else:
return Regex( "|".join(re.escape(sym) for sym in symbols) ).setName(' | '.join(symbols))
except Exception:
warnings.warn("Exception creating Regex for oneOf, building MatchFirst",
SyntaxWarning, stacklevel=2)
# last resort, just use MatchFirst
return MatchFirst(parseElementClass(sym) for sym in symbols).setName(' | '.join(symbols))
def dictOf( key, value ):
"""
Helper to easily and clearly define a dictionary by specifying the respective patterns
for the key and value. Takes care of defining the C{L{Dict}}, C{L{ZeroOrMore}}, and C{L{Group}} tokens
in the proper order. The key pattern can include delimiting markers or punctuation,
as long as they are suppressed, thereby leaving the significant key text. The value
pattern can include named results, so that the C{Dict} results can include named token
fields.
Example::
text = "shape: SQUARE posn: upper left color: light blue texture: burlap"
attr_expr = (label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
print(OneOrMore(attr_expr).parseString(text).dump())
attr_label = label
attr_value = Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join)
# similar to Dict, but simpler call format
result = dictOf(attr_label, attr_value).parseString(text)
print(result.dump())
print(result['shape'])
print(result.shape) # object attribute access works too
print(result.asDict())
prints::
[['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'light blue'], ['texture', 'burlap']]
- color: light blue
- posn: upper left
- shape: SQUARE
- texture: burlap
SQUARE
SQUARE
{'color': 'light blue', 'shape': 'SQUARE', 'posn': 'upper left', 'texture': 'burlap'}
"""
return Dict( ZeroOrMore( Group ( key + value ) ) )
def originalTextFor(expr, asString=True):
"""
Helper to return the original, untokenized text for a given expression. Useful to
restore the parsed fields of an HTML start tag into the raw tag text itself, or to
revert separate tokens with intervening whitespace back to the original matching
input text. By default, returns astring containing the original parsed text.
If the optional C{asString} argument is passed as C{False}, then the return value is a
C{L{ParseResults}} containing any results names that were originally matched, and a
single token containing the original matched text from the input string. So if
the expression passed to C{L{originalTextFor}} contains expressions with defined
results names, you must set C{asString} to C{False} if you want to preserve those
results name values.
Example::
src = "this is test <b> bold <i>text</i> </b> normal text "
for tag in ("b","i"):
opener,closer = makeHTMLTags(tag)
patt = originalTextFor(opener + SkipTo(closer) + closer)
print(patt.searchString(src)[0])
prints::
['<b> bold <i>text</i> </b>']
['<i>text</i>']
"""
locMarker = Empty().setParseAction(lambda s,loc,t: loc)
endlocMarker = locMarker.copy()
endlocMarker.callPreparse = False
matchExpr = locMarker("_original_start") + expr + endlocMarker("_original_end")
if asString:
extractText = lambda s,l,t: s[t._original_start:t._original_end]
else:
def extractText(s,l,t):
t[:] = [s[t.pop('_original_start'):t.pop('_original_end')]]
matchExpr.setParseAction(extractText)
matchExpr.ignoreExprs = expr.ignoreExprs
return matchExpr
def ungroup(expr):
"""
Helper to undo pyparsing's default grouping of And expressions, even
if all but one are non-empty.
"""
return TokenConverter(expr).setParseAction(lambda t:t[0])
def locatedExpr(expr):
"""
Helper to decorate a returned token with its starting and ending locations in the input string.
This helper adds the following results names:
- locn_start = location where matched expression begins
- locn_end = location where matched expression ends
- value = the actual parsed results
Be careful if the input text contains C{<TAB>} characters, you may want to call
C{L{ParserElement.parseWithTabs}}
Example::
wd = Word(alphas)
for match in locatedExpr(wd).searchString("ljsdf123lksdjjf123lkkjj1222"):
print(match)
prints::
[[0, 'ljsdf', 5]]
[[8, 'lksdjjf', 15]]
[[18, 'lkkjj', 23]]
"""
locator = Empty().setParseAction(lambda s,l,t: l)
return Group(locator("locn_start") + expr("value") + locator.copy().leaveWhitespace()("locn_end"))
# convenience constants for positional expressions
empty = Empty().setName("empty")
lineStart = LineStart().setName("lineStart")
lineEnd = LineEnd().setName("lineEnd")
stringStart = StringStart().setName("stringStart")
stringEnd = StringEnd().setName("stringEnd")
_escapedPunc = Word( _bslash, r"\[]-*.$+^?()~ ", exact=2 ).setParseAction(lambda s,l,t:t[0][1])
_escapedHexChar = Regex(r"\\0?[xX][0-9a-fA-F]+").setParseAction(lambda s,l,t:unichr(int(t[0].lstrip(r'\0x'),16)))
_escapedOctChar = Regex(r"\\0[0-7]+").setParseAction(lambda s,l,t:unichr(int(t[0][1:],8)))
_singleChar = _escapedPunc | _escapedHexChar | _escapedOctChar | Word(printables, excludeChars=r'\]', exact=1) | Regex(r"\w", re.UNICODE)
_charRange = Group(_singleChar + Suppress("-") + _singleChar)
_reBracketExpr = Literal("[") + Optional("^").setResultsName("negate") + Group( OneOrMore( _charRange | _singleChar ) ).setResultsName("body") + "]"
def srange(s):
r"""
Helper to easily define string ranges for use in Word construction. Borrows
syntax from regexp '[]' string range definitions::
srange("[0-9]") -> "0123456789"
srange("[a-z]") -> "abcdefghijklmnopqrstuvwxyz"
srange("[a-z$_]") -> "abcdefghijklmnopqrstuvwxyz$_"
The input string must be enclosed in []'s, and the returned string is the expanded
character set joined into a single string.
The values enclosed in the []'s may be:
- a single character
- an escaped character with a leading backslash (such as C{\-} or C{\]})
- an escaped hex character with a leading C{'\x'} (C{\x21}, which is a C{'!'} character)
(C{\0x##} is also supported for backwards compatibility)
- an escaped octal character with a leading C{'\0'} (C{\041}, which is a C{'!'} character)
- a range of any of the above, separated by a dash (C{'a-z'}, etc.)
- any combination of the above (C{'aeiouy'}, C{'a-zA-Z0-9_$'}, etc.)
"""
_expanded = lambda p: p if not isinstance(p,ParseResults) else ''.join(unichr(c) for c in range(ord(p[0]),ord(p[1])+1))
try:
return "".join(_expanded(part) for part in _reBracketExpr.parseString(s).body)
except Exception:
return ""
def matchOnlyAtCol(n):
"""
Helper method for defining parse actions that require matching at a specific
column in the input text.
"""
def verifyCol(strg,locn,toks):
if col(locn,strg) != n:
raise ParseException(strg,locn,"matched token not at column %d" % n)
return verifyCol
def replaceWith(replStr):
"""
Helper method for common parse actions that simply return a literal value. Especially
useful when used with C{L{transformString<ParserElement.transformString>}()}.
Example::
num = Word(nums).setParseAction(lambda toks: int(toks[0]))
na = oneOf("N/A NA").setParseAction(replaceWith(math.nan))
term = na | num
OneOrMore(term).parseString("324 234 N/A 234") # -> [324, 234, nan, 234]
"""
return lambda s,l,t: [replStr]
def removeQuotes(s,l,t):
"""
Helper parse action for removing quotation marks from parsed quoted strings.
Example::
# by default, quotation marks are included in parsed results
quotedString.parseString("'Now is the Winter of our Discontent'") # -> ["'Now is the Winter of our Discontent'"]
# use removeQuotes to strip quotation marks from parsed results
quotedString.setParseAction(removeQuotes)
quotedString.parseString("'Now is the Winter of our Discontent'") # -> ["Now is the Winter of our Discontent"]
"""
return t[0][1:-1]
def tokenMap(func, *args):
"""
Helper to define a parse action by mapping a function to all elements of a ParseResults list.If any additional
args are passed, they are forwarded to the given function as additional arguments after
the token, as in C{hex_integer = Word(hexnums).setParseAction(tokenMap(int, 16))}, which will convert the
parsed data to an integer using base 16.
Example (compare the last to example in L{ParserElement.transformString}::
hex_ints = OneOrMore(Word(hexnums)).setParseAction(tokenMap(int, 16))
hex_ints.runTests('''
00 11 22 aa FF 0a 0d 1a
''')
upperword = Word(alphas).setParseAction(tokenMap(str.upper))
OneOrMore(upperword).runTests('''
my kingdom for a horse
''')
wd = Word(alphas).setParseAction(tokenMap(str.title))
OneOrMore(wd).setParseAction(' '.join).runTests('''
now is the winter of our discontent made glorious summer by this sun of york
''')
prints::
00 11 22 aa FF 0a 0d 1a
[0, 17, 34, 170, 255, 10, 13, 26]
my kingdom for a horse
['MY', 'KINGDOM', 'FOR', 'A', 'HORSE']
now is the winter of our discontent made glorious summer by this sun of york
['Now Is The Winter Of Our Discontent Made Glorious Summer By This Sun Of York']
"""
def pa(s,l,t):
return [func(tokn, *args) for tokn in t]
try:
func_name = getattr(func, '__name__',
getattr(func, '__class__').__name__)
except Exception:
func_name = str(func)
pa.__name__ = func_name
return pa
upcaseTokens = tokenMap(lambda t: _ustr(t).upper())
"""(Deprecated) Helper parse action to convert tokens to upper case. Deprecated in favor of L{pyparsing_common.upcaseTokens}"""
downcaseTokens = tokenMap(lambda t: _ustr(t).lower())
"""(Deprecated) Helper parse action to convert tokens to lower case. Deprecated in favor of L{pyparsing_common.downcaseTokens}"""
def _makeTags(tagStr, xml):
"""Internal helper to construct opening and closing tag expressions, given a tag name"""
if isinstance(tagStr,basestring):
resname = tagStr
tagStr = Keyword(tagStr, caseless=not xml)
else:
resname = tagStr.name
tagAttrName = Word(alphas,alphanums+"_-:")
if (xml):
tagAttrValue = dblQuotedString.copy().setParseAction( removeQuotes )
openTag = Suppress("<") + tagStr("tag") + \
Dict(ZeroOrMore(Group( tagAttrName + Suppress("=") + tagAttrValue ))) + \
Optional("/",default=[False]).setResultsName("empty").setParseAction(lambda s,l,t:t[0]=='/') + Suppress(">")
else:
printablesLessRAbrack = "".join(c for c in printables if c not in ">")
tagAttrValue = quotedString.copy().setParseAction( removeQuotes ) | Word(printablesLessRAbrack)
openTag = Suppress("<") + tagStr("tag") + \
Dict(ZeroOrMore(Group( tagAttrName.setParseAction(downcaseTokens) + \
Optional( Suppress("=") + tagAttrValue ) ))) + \
Optional("/",default=[False]).setResultsName("empty").setParseAction(lambda s,l,t:t[0]=='/') + Suppress(">")
closeTag = Combine(_L("</") + tagStr + ">")
openTag = openTag.setResultsName("start"+"".join(resname.replace(":"," ").title().split())).setName("<%s>" % resname)
closeTag = closeTag.setResultsName("end"+"".join(resname.replace(":"," ").title().split())).setName("</%s>" % resname)
openTag.tag = resname
closeTag.tag = resname
return openTag, closeTag
def makeHTMLTags(tagStr):
"""
Helper to construct opening and closing tag expressions for HTML, given a tag name. Matches
tags in either upper or lower case, attributes with namespaces and with quoted or unquoted values.
Example::
text = '<td>More info at the <a href="http://pyparsing.wikispaces.com">pyparsing</a> wiki page</td>'
# makeHTMLTags returns pyparsing expressions for the opening and closing tags as a 2-tuple
a,a_end = makeHTMLTags("A")
link_expr = a + SkipTo(a_end)("link_text") + a_end
for link in link_expr.searchString(text):
# attributes in the <A> tag (like "href" shown here) are also accessible as named results
print(link.link_text, '->', link.href)
prints::
pyparsing -> http://pyparsing.wikispaces.com
"""
return _makeTags( tagStr, False )
def makeXMLTags(tagStr):
"""
Helper to construct opening and closing tag expressions for XML, given a tag name. Matches
tags only in the given upper/lower case.
Example: similar to L{makeHTMLTags}
"""
return _makeTags( tagStr, True )
def withAttribute(*args,**attrDict):
"""
Helper to create a validating parse action to be used with start tags created
with C{L{makeXMLTags}} or C{L{makeHTMLTags}}. Use C{withAttribute} to qualify a starting tag
with a required attribute value, to avoid false matches on common tags such as
C{<TD>} or C{<DIV>}.
Call C{withAttribute} with a series of attribute names and values. Specify the list
of filter attributes names and values as:
- keyword arguments, as in C{(align="right")}, or
- as an explicit dict with C{**} operator, when an attribute name is also a Python
reserved word, as in C{**{"class":"Customer", "align":"right"}}
- a list of name-value tuples, as in ( ("ns1:class", "Customer"), ("ns2:align","right") )
For attribute names with a namespace prefix, you must use the second form. Attribute
names are matched insensitive to upper/lower case.
If just testing for C{class} (with or without a namespace), use C{L{withClass}}.
To verify that the attribute exists, but without specifying a value, pass
C{withAttribute.ANY_VALUE} as the value.
Example::
html = '''
<div>
Some text
<div type="grid">1 4 0 1 0</div>
<div type="graph">1,3 2,3 1,1</div>
<div>this has no type</div>
</div>
'''
div,div_end = makeHTMLTags("div")
# only match div tag having a type attribute with value "grid"
div_grid = div().setParseAction(withAttribute(type="grid"))
grid_expr = div_grid + SkipTo(div | div_end)("body")
for grid_header in grid_expr.searchString(html):
print(grid_header.body)
# construct a match with any div tag having a type attribute, regardless of the value
div_any_type = div().setParseAction(withAttribute(type=withAttribute.ANY_VALUE))
div_expr = div_any_type + SkipTo(div | div_end)("body")
for div_header in div_expr.searchString(html):
print(div_header.body)
prints::
1 4 0 1 0
1 4 0 1 0
1,3 2,3 1,1
"""
if args:
attrs = args[:]
else:
attrs = attrDict.items()
attrs = [(k,v) for k,v in attrs]
def pa(s,l,tokens):
for attrName,attrValue in attrs:
if attrName not in tokens:
raise ParseException(s,l,"no matching attribute " + attrName)
if attrValue != withAttribute.ANY_VALUE and tokens[attrName] != attrValue:
raise ParseException(s,l,"attribute '%s' has value '%s', must be '%s'" %
(attrName, tokens[attrName], attrValue))
return pa
withAttribute.ANY_VALUE = object()
def withClass(classname, namespace=''):
"""
Simplified version of C{L{withAttribute}} when matching on a div class - made
difficult because C{class} is a reserved word in Python.
Example::
html = '''
<div>
Some text
<div class="grid">1 4 0 1 0</div>
<div class="graph">1,3 2,3 1,1</div>
<div>this <div> has no class</div>
</div>
'''
div,div_end = makeHTMLTags("div")
div_grid = div().setParseAction(withClass("grid"))
grid_expr = div_grid + SkipTo(div | div_end)("body")
for grid_header in grid_expr.searchString(html):
print(grid_header.body)
div_any_type = div().setParseAction(withClass(withAttribute.ANY_VALUE))
div_expr = div_any_type + SkipTo(div | div_end)("body")
for div_header in div_expr.searchString(html):
print(div_header.body)
prints::
1 4 0 1 0
1 4 0 1 0
1,3 2,3 1,1
"""
classattr = "%s:class" % namespace if namespace else "class"
return withAttribute(**{classattr : classname})
opAssoc = _Constants()
opAssoc.LEFT = object()
opAssoc.RIGHT = object()
def infixNotation( baseExpr, opList, lpar=Suppress('('), rpar=Suppress(')') ):
"""
Helper method for constructing grammars of expressions made up of
operators working in a precedence hierarchy. Operators may be unary or
binary, left- or right-associative. Parse actions can also be attached
to operator expressions. The generated parser will also recognize the use
of parentheses to override operator precedences (see example below).
Note: if you define a deep operator list, you may see performance issues
when using infixNotation. See L{ParserElement.enablePackrat} for a
mechanism to potentially improve your parser performance.
Parameters:
- baseExpr - expression representing the most basic element for the nested
- opList - list of tuples, one for each operator precedence level in the
expression grammar; each tuple is of the form
(opExpr, numTerms, rightLeftAssoc, parseAction), where:
- opExpr is the pyparsing expression for the operator;
may also be a string, which will be converted to a Literal;
if numTerms is 3, opExpr is a tuple of two expressions, for the
two operators separating the 3 terms
- numTerms is the number of terms for this operator (must
be 1, 2, or 3)
- rightLeftAssoc is the indicator whether the operator is
right or left associative, using the pyparsing-defined
constants C{opAssoc.RIGHT} and C{opAssoc.LEFT}.
- parseAction is the parse action to be associated with
expressions matching this operator expression (the
parse action tuple member may be omitted); if the parse action
is passed a tuple or list of functions, this is equivalent to
calling C{setParseAction(*fn)} (L{ParserElement.setParseAction})
- lpar - expression for matching left-parentheses (default=C{Suppress('(')})
- rpar - expression for matching right-parentheses (default=C{Suppress(')')})
Example::
# simple example of four-function arithmetic with ints and variable names
integer = pyparsing_common.signed_integer
varname = pyparsing_common.identifier
arith_expr = infixNotation(integer | varname,
[
('-', 1, opAssoc.RIGHT),
(oneOf('* /'), 2, opAssoc.LEFT),
(oneOf('+ -'), 2, opAssoc.LEFT),
])
arith_expr.runTests('''
5+3*6
(5+3)*6
-2--11
''', fullDump=False)
prints::
5+3*6
[[5, '+', [3, '*', 6]]]
(5+3)*6
[[[5, '+', 3], '*', 6]]
-2--11
[[['-', 2], '-', ['-', 11]]]
"""
ret = Forward()
lastExpr = baseExpr | ( lpar + ret + rpar )
for i,operDef in enumerate(opList):
opExpr,arity,rightLeftAssoc,pa = (operDef + (None,))[:4]
termName = "%s term" % opExpr if arity < 3 else "%s%s term" % opExpr
if arity == 3:
if opExpr is None or len(opExpr) != 2:
raise ValueError("if numterms=3, opExpr must be a tuple or list of two expressions")
opExpr1, opExpr2 = opExpr
thisExpr = Forward().setName(termName)
if rightLeftAssoc == opAssoc.LEFT:
if arity == 1:
matchExpr = FollowedBy(lastExpr + opExpr) + Group( lastExpr + OneOrMore( opExpr ) )
elif arity == 2:
if opExpr is not None:
matchExpr = FollowedBy(lastExpr + opExpr + lastExpr) + Group( lastExpr + OneOrMore( opExpr + lastExpr ) )
else:
matchExpr = FollowedBy(lastExpr+lastExpr) + Group( lastExpr + OneOrMore(lastExpr) )
elif arity == 3:
matchExpr = FollowedBy(lastExpr + opExpr1 + lastExpr + opExpr2 + lastExpr) + \
Group( lastExpr + opExpr1 + lastExpr + opExpr2 + lastExpr )
else:
raise ValueError("operator must be unary (1), binary (2), or ternary (3)")
elif rightLeftAssoc == opAssoc.RIGHT:
if arity == 1:
# try to avoid LR with this extra test
if not isinstance(opExpr, Optional):
opExpr = Optional(opExpr)
matchExpr = FollowedBy(opExpr.expr + thisExpr) + Group( opExpr + thisExpr )
elif arity == 2:
if opExpr is not None:
matchExpr = FollowedBy(lastExpr + opExpr + thisExpr) + Group( lastExpr + OneOrMore( opExpr + thisExpr ) )
else:
matchExpr = FollowedBy(lastExpr + thisExpr) + Group( lastExpr + OneOrMore( thisExpr ) )
elif arity == 3:
matchExpr = FollowedBy(lastExpr + opExpr1 + thisExpr + opExpr2 + thisExpr) + \
Group( lastExpr + opExpr1 + thisExpr + opExpr2 + thisExpr )
else:
raise ValueError("operator must be unary (1), binary (2), or ternary (3)")
else:
raise ValueError("operator must indicate right or left associativity")
if pa:
if isinstance(pa, (tuple, list)):
matchExpr.setParseAction(*pa)
else:
matchExpr.setParseAction(pa)
thisExpr <<= ( matchExpr.setName(termName) | lastExpr )
lastExpr = thisExpr
ret <<= lastExpr
return ret
operatorPrecedence = infixNotation
"""(Deprecated) Former name of C{L{infixNotation}}, will be dropped in a future release."""
dblQuotedString = Combine(Regex(r'"(?:[^"\n\r\\]|(?:"")|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*')+'"').setName("string enclosed in double quotes")
sglQuotedString = Combine(Regex(r"'(?:[^'\n\r\\]|(?:'')|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*")+"'").setName("string enclosed in single quotes")
quotedString = Combine(Regex(r'"(?:[^"\n\r\\]|(?:"")|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*')+'"'|
Regex(r"'(?:[^'\n\r\\]|(?:'')|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*")+"'").setName("quotedString using single or double quotes")
unicodeString = Combine(_L('u') + quotedString.copy()).setName("unicode string literal")
def nestedExpr(opener="(", closer=")", content=None, ignoreExpr=quotedString.copy()):
"""
Helper method for defining nested lists enclosed in opening and closing
delimiters ("(" and ")" are the default).
Parameters:
- opener - opening character for a nested list (default=C{"("}); can also be a pyparsing expression
- closer - closing character for a nested list (default=C{")"}); can also be a pyparsing expression
- content - expression for items within the nested lists (default=C{None})
- ignoreExpr - expression for ignoring opening and closing delimiters (default=C{quotedString})
If an expression is not provided for the content argument, the nested
expression will capture all whitespace-delimited content between delimiters
as a list of separate values.
Use the C{ignoreExpr} argument to define expressions that may contain
opening or closing characters that should not be treated as opening
or closing characters for nesting, such as quotedString or a comment
expression. Specify multiple expressions using an C{L{Or}} or C{L{MatchFirst}}.
The default is L{quotedString}, but if no expressions are to be ignored,
then pass C{None} for this argument.
Example::
data_type = oneOf("void int short long char float double")
decl_data_type = Combine(data_type + Optional(Word('*')))
ident = Word(alphas+'_', alphanums+'_')
number = pyparsing_common.number
arg = Group(decl_data_type + ident)
LPAR,RPAR = map(Suppress, "()")
code_body = nestedExpr('{', '}', ignoreExpr=(quotedString | cStyleComment))
c_function = (decl_data_type("type")
+ ident("name")
+ LPAR + Optional(delimitedList(arg), [])("args") + RPAR
+ code_body("body"))
c_function.ignore(cStyleComment)
source_code = '''
int is_odd(int x) {
return (x%2);
}
int dec_to_hex(char hchar) {
if (hchar >= '0' && hchar <= '9') {
return (ord(hchar)-ord('0'));
} else {
return (10+ord(hchar)-ord('A'));
}
}
'''
for func in c_function.searchString(source_code):
print("%(name)s (%(type)s) args: %(args)s" % func)
prints::
is_odd (int) args: [['int', 'x']]
dec_to_hex (int) args: [['char', 'hchar']]
"""
if opener == closer:
raise ValueError("opening and closing strings cannot be the same")
if content is None:
if isinstance(opener,basestring) and isinstance(closer,basestring):
if len(opener) == 1 and len(closer)==1:
if ignoreExpr is not None:
content = (Combine(OneOrMore(~ignoreExpr +
CharsNotIn(opener+closer+ParserElement.DEFAULT_WHITE_CHARS,exact=1))
).setParseAction(lambda t:t[0].strip()))
else:
content = (empty.copy()+CharsNotIn(opener+closer+ParserElement.DEFAULT_WHITE_CHARS
).setParseAction(lambda t:t[0].strip()))
else:
if ignoreExpr is not None:
content = (Combine(OneOrMore(~ignoreExpr +
~Literal(opener) + ~Literal(closer) +
CharsNotIn(ParserElement.DEFAULT_WHITE_CHARS,exact=1))
).setParseAction(lambda t:t[0].strip()))
else:
content = (Combine(OneOrMore(~Literal(opener) + ~Literal(closer) +
CharsNotIn(ParserElement.DEFAULT_WHITE_CHARS,exact=1))
).setParseAction(lambda t:t[0].strip()))
else:
raise ValueError("opening and closing arguments must be strings if no content expression is given")
ret = Forward()
if ignoreExpr is not None:
ret <<= Group( Suppress(opener) + ZeroOrMore( ignoreExpr | ret | content ) + Suppress(closer) )
else:
ret <<= Group( Suppress(opener) + ZeroOrMore( ret | content ) + Suppress(closer) )
ret.setName('nested %s%s expression' % (opener,closer))
return ret
def indentedBlock(blockStatementExpr, indentStack, indent=True):
"""
Helper method for defining space-delimited indentation blocks, such as
those used to define block statements in Python source code.
Parameters:
- blockStatementExpr - expression defining syntax of statement that
is repeated within the indented block
- indentStack - list created by caller to manage indentation stack
(multiple statementWithIndentedBlock expressions within a single grammar
should share a common indentStack)
- indent - boolean indicating whether block must be indented beyond the
the current level; set to False for block of left-most statements
(default=C{True})
A valid block must contain at least one C{blockStatement}.
Example::
data = '''
def A(z):
A1
B = 100
G = A2
A2
A3
B
def BB(a,b,c):
BB1
def BBA():
bba1
bba2
bba3
C
D
def spam(x,y):
def eggs(z):
pass
'''
indentStack = [1]
stmt = Forward()
identifier = Word(alphas, alphanums)
funcDecl = ("def" + identifier + Group( "(" + Optional( delimitedList(identifier) ) + ")" ) + ":")
func_body = indentedBlock(stmt, indentStack)
funcDef = Group( funcDecl + func_body )
rvalue = Forward()
funcCall = Group(identifier + "(" + Optional(delimitedList(rvalue)) + ")")
rvalue << (funcCall | identifier | Word(nums))
assignment = Group(identifier + "=" + rvalue)
stmt << ( funcDef | assignment | identifier )
module_body = OneOrMore(stmt)
parseTree = module_body.parseString(data)
parseTree.pprint()
prints::
[['def',
'A',
['(', 'z', ')'],
':',
[['A1'], [['B', '=', '100']], [['G', '=', 'A2']], ['A2'], ['A3']]],
'B',
['def',
'BB',
['(', 'a', 'b', 'c', ')'],
':',
[['BB1'], [['def', 'BBA', ['(', ')'], ':', [['bba1'], ['bba2'], ['bba3']]]]]],
'C',
'D',
['def',
'spam',
['(', 'x', 'y', ')'],
':',
[[['def', 'eggs', ['(', 'z', ')'], ':', [['pass']]]]]]]
"""
def checkPeerIndent(s,l,t):
if l >= len(s): return
curCol = col(l,s)
if curCol != indentStack[-1]:
if curCol > indentStack[-1]:
raise ParseFatalException(s,l,"illegal nesting")
raise ParseException(s,l,"not a peer entry")
def checkSubIndent(s,l,t):
curCol = col(l,s)
if curCol > indentStack[-1]:
indentStack.append( curCol )
else:
raise ParseException(s,l,"not a subentry")
def checkUnindent(s,l,t):
if l >= len(s): return
curCol = col(l,s)
if not(indentStack and curCol < indentStack[-1] and curCol <= indentStack[-2]):
raise ParseException(s,l,"not an unindent")
indentStack.pop()
NL = OneOrMore(LineEnd().setWhitespaceChars("\t ").suppress())
INDENT = (Empty() + Empty().setParseAction(checkSubIndent)).setName('INDENT')
PEER = Empty().setParseAction(checkPeerIndent).setName('')
UNDENT = Empty().setParseAction(checkUnindent).setName('UNINDENT')
if indent:
smExpr = Group( Optional(NL) +
#~ FollowedBy(blockStatementExpr) +
INDENT + (OneOrMore( PEER + Group(blockStatementExpr) + Optional(NL) )) + UNDENT)
else:
smExpr = Group( Optional(NL) +
(OneOrMore( PEER + Group(blockStatementExpr) + Optional(NL) )) )
blockStatementExpr.ignore(_bslash + LineEnd())
return smExpr.setName('indented block')
alphas8bit = srange(r"[\0xc0-\0xd6\0xd8-\0xf6\0xf8-\0xff]")
punc8bit = srange(r"[\0xa1-\0xbf\0xd7\0xf7]")
anyOpenTag,anyCloseTag = makeHTMLTags(Word(alphas,alphanums+"_:").setName('any tag'))
_htmlEntityMap = dict(zip("gt lt amp nbsp quot apos".split(),'><& "\''))
commonHTMLEntity = Regex('&(?P<entity>' + '|'.join(_htmlEntityMap.keys()) +");").setName("common HTML entity")
def replaceHTMLEntity(t):
"""Helper parser action to replace common HTML entities with their special characters"""
return _htmlEntityMap.get(t.entity)
# it's easy to get these comment structures wrong - they're very common, so may as well make them available
cStyleComment = Combine(Regex(r"/\*(?:[^*]|\*(?!/))*") + '*/').setName("C style comment")
"Comment of the form C{/* ... */}"
htmlComment = Regex(r"<!--[\s\S]*?-->").setName("HTML comment")
"Comment of the form C{<!-- ... -->}"
restOfLine = Regex(r".*").leaveWhitespace().setName("rest of line")
dblSlashComment = Regex(r"//(?:\\\n|[^\n])*").setName("// comment")
"Comment of the form C{// ... (to end of line)}"
cppStyleComment = Combine(Regex(r"/\*(?:[^*]|\*(?!/))*") + '*/'| dblSlashComment).setName("C++ style comment")
"Comment of either form C{L{cStyleComment}} or C{L{dblSlashComment}}"
javaStyleComment = cppStyleComment
"Same as C{L{cppStyleComment}}"
pythonStyleComment = Regex(r"#.*").setName("Python style comment")
"Comment of the form C{# ... (to end of line)}"
_commasepitem = Combine(OneOrMore(Word(printables, excludeChars=',') +
Optional( Word(" \t") +
~Literal(",") + ~LineEnd() ) ) ).streamline().setName("commaItem")
commaSeparatedList = delimitedList( Optional( quotedString.copy() | _commasepitem, default="") ).setName("commaSeparatedList")
"""(Deprecated) Predefined expression of 1 or more printable words or quoted strings, separated by commas.
This expression is deprecated in favor of L{pyparsing_common.comma_separated_list}."""
# some other useful expressions - using lower-case class name since we are really using this as a namespace
class pyparsing_common:
"""
Here are some common low-level expressions that may be useful in jump-starting parser development:
- numeric forms (L{integers<integer>}, L{reals<real>}, L{scientific notation<sci_real>})
- common L{programming identifiers<identifier>}
- network addresses (L{MAC<mac_address>}, L{IPv4<ipv4_address>}, L{IPv6<ipv6_address>})
- ISO8601 L{dates<iso8601_date>} and L{datetime<iso8601_datetime>}
- L{UUID<uuid>}
- L{comma-separated list<comma_separated_list>}
Parse actions:
- C{L{convertToInteger}}
- C{L{convertToFloat}}
- C{L{convertToDate}}
- C{L{convertToDatetime}}
- C{L{stripHTMLTags}}
- C{L{upcaseTokens}}
- C{L{downcaseTokens}}
Example::
pyparsing_common.number.runTests('''
# any int or real number, returned as the appropriate type
100
-100
+100
3.14159
6.02e23
1e-12
''')
pyparsing_common.fnumber.runTests('''
# any int or real number, returned as float
100
-100
+100
3.14159
6.02e23
1e-12
''')
pyparsing_common.hex_integer.runTests('''
# hex numbers
100
FF
''')
pyparsing_common.fraction.runTests('''
# fractions
1/2
-3/4
''')
pyparsing_common.mixed_integer.runTests('''
# mixed fractions
1
1/2
-3/4
1-3/4
''')
import uuid
pyparsing_common.uuid.setParseAction(tokenMap(uuid.UUID))
pyparsing_common.uuid.runTests('''
# uuid
12345678-1234-5678-1234-567812345678
''')
prints::
# any int or real number, returned as the appropriate type
100
[100]
-100
[-100]
+100
[100]
3.14159
[3.14159]
6.02e23
[6.02e+23]
1e-12
[1e-12]
# any int or real number, returned as float
100
[100.0]
-100
[-100.0]
+100
[100.0]
3.14159
[3.14159]
6.02e23
[6.02e+23]
1e-12
[1e-12]
# hex numbers
100
[256]
FF
[255]
# fractions
1/2
[0.5]
-3/4
[-0.75]
# mixed fractions
1
[1]
1/2
[0.5]
-3/4
[-0.75]
1-3/4
[1.75]
# uuid
12345678-1234-5678-1234-567812345678
[UUID('12345678-1234-5678-1234-567812345678')]
"""
convertToInteger = tokenMap(int)
"""
Parse action for converting parsed integers to Python int
"""
convertToFloat = tokenMap(float)
"""
Parse action for converting parsed numbers to Python float
"""
integer = Word(nums).setName("integer").setParseAction(convertToInteger)
"""expression that parses an unsigned integer, returns an int"""
hex_integer = Word(hexnums).setName("hex integer").setParseAction(tokenMap(int,16))
"""expression that parses a hexadecimal integer, returns an int"""
signed_integer = Regex(r'[+-]?\d+').setName("signed integer").setParseAction(convertToInteger)
"""expression that parses an integer with optional leading sign, returns an int"""
fraction = (signed_integer().setParseAction(convertToFloat) + '/' + signed_integer().setParseAction(convertToFloat)).setName("fraction")
"""fractional expression of an integer divided by an integer, returns a float"""
fraction.addParseAction(lambda t: t[0]/t[-1])
mixed_integer = (fraction | signed_integer + Optional(Optional('-').suppress() + fraction)).setName("fraction or mixed integer-fraction")
"""mixed integer of the form 'integer - fraction', with optional leading integer, returns float"""
mixed_integer.addParseAction(sum)
real = Regex(r'[+-]?\d+\.\d*').setName("real number").setParseAction(convertToFloat)
"""expression that parses a floating point number and returns a float"""
sci_real = Regex(r'[+-]?\d+([eE][+-]?\d+|\.\d*([eE][+-]?\d+)?)').setName("real number with scientific notation").setParseAction(convertToFloat)
"""expression that parses a floating point number with optional scientific notation and returns a float"""
# streamlining this expression makes the docs nicer-looking
number = (sci_real | real | signed_integer).streamline()
"""any numeric expression, returns the corresponding Python type"""
fnumber = Regex(r'[+-]?\d+\.?\d*([eE][+-]?\d+)?').setName("fnumber").setParseAction(convertToFloat)
"""any int or real number, returned as float"""
identifier = Word(alphas+'_', alphanums+'_').setName("identifier")
"""typical code identifier (leading alpha or '_', followed by 0 or more alphas, nums, or '_')"""
ipv4_address = Regex(r'(25[0-5]|2[0-4][0-9]|1?[0-9]{1,2})(\.(25[0-5]|2[0-4][0-9]|1?[0-9]{1,2})){3}').setName("IPv4 address")
"IPv4 address (C{0.0.0.0 - 255.255.255.255})"
_ipv6_part = Regex(r'[0-9a-fA-F]{1,4}').setName("hex_integer")
_full_ipv6_address = (_ipv6_part + (':' + _ipv6_part)*7).setName("full IPv6 address")
_short_ipv6_address = (Optional(_ipv6_part + (':' + _ipv6_part)*(0,6)) + "::" + Optional(_ipv6_part + (':' + _ipv6_part)*(0,6))).setName("short IPv6 address")
_short_ipv6_address.addCondition(lambda t: sum(1 for tt in t if pyparsing_common._ipv6_part.matches(tt)) < 8)
_mixed_ipv6_address = ("::ffff:" + ipv4_address).setName("mixed IPv6 address")
ipv6_address = Combine((_full_ipv6_address | _mixed_ipv6_address | _short_ipv6_address).setName("IPv6 address")).setName("IPv6 address")
"IPv6 address (long, short, or mixed form)"
mac_address = Regex(r'[0-9a-fA-F]{2}([:.-])[0-9a-fA-F]{2}(?:\1[0-9a-fA-F]{2}){4}').setName("MAC address")
"MAC address xx:xx:xx:xx:xx (may also have '-' or '.' delimiters)"
@staticmethod
def convertToDate(fmt="%Y-%m-%d"):
"""
Helper to create a parse action for converting parsed date string to Python datetime.date
Params -
- fmt - format to be passed to datetime.strptime (default=C{"%Y-%m-%d"})
Example::
date_expr = pyparsing_common.iso8601_date.copy()
date_expr.setParseAction(pyparsing_common.convertToDate())
print(date_expr.parseString("1999-12-31"))
prints::
[datetime.date(1999, 12, 31)]
"""
def cvt_fn(s,l,t):
try:
return datetime.strptime(t[0], fmt).date()
except ValueError as ve:
raise ParseException(s, l, str(ve))
return cvt_fn
@staticmethod
def convertToDatetime(fmt="%Y-%m-%dT%H:%M:%S.%f"):
"""
Helper to create a parse action for converting parsed datetime string to Python datetime.datetime
Params -
- fmt - format to be passed to datetime.strptime (default=C{"%Y-%m-%dT%H:%M:%S.%f"})
Example::
dt_expr = pyparsing_common.iso8601_datetime.copy()
dt_expr.setParseAction(pyparsing_common.convertToDatetime())
print(dt_expr.parseString("1999-12-31T23:59:59.999"))
prints::
[datetime.datetime(1999, 12, 31, 23, 59, 59, 999000)]
"""
def cvt_fn(s,l,t):
try:
return datetime.strptime(t[0], fmt)
except ValueError as ve:
raise ParseException(s, l, str(ve))
return cvt_fn
iso8601_date = Regex(r'(?P<year>\d{4})(?:-(?P<month>\d\d)(?:-(?P<day>\d\d))?)?').setName("ISO8601 date")
"ISO8601 date (C{yyyy-mm-dd})"
iso8601_datetime = Regex(r'(?P<year>\d{4})-(?P<month>\d\d)-(?P<day>\d\d)[T ](?P<hour>\d\d):(?P<minute>\d\d)(:(?P<second>\d\d(\.\d*)?)?)?(?P<tz>Z|[+-]\d\d:?\d\d)?').setName("ISO8601 datetime")
"ISO8601 datetime (C{yyyy-mm-ddThh:mm:ss.s(Z|+-00:00)}) - trailing seconds, milliseconds, and timezone optional; accepts separating C{'T'} or C{' '}"
uuid = Regex(r'[0-9a-fA-F]{8}(-[0-9a-fA-F]{4}){3}-[0-9a-fA-F]{12}').setName("UUID")
"UUID (C{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx})"
_html_stripper = anyOpenTag.suppress() | anyCloseTag.suppress()
@staticmethod
def stripHTMLTags(s, l, tokens):
"""
Parse action to remove HTML tags from web page HTML source
Example::
# strip HTML links from normal text
text = '<td>More info at the <a href="http://pyparsing.wikispaces.com">pyparsing</a> wiki page</td>'
td,td_end = makeHTMLTags("TD")
table_text = td + SkipTo(td_end).setParseAction(pyparsing_common.stripHTMLTags)("body") + td_end
print(table_text.parseString(text).body) # -> 'More info at the pyparsing wiki page'
"""
return pyparsing_common._html_stripper.transformString(tokens[0])
_commasepitem = Combine(OneOrMore(~Literal(",") + ~LineEnd() + Word(printables, excludeChars=',')
+ Optional( White(" \t") ) ) ).streamline().setName("commaItem")
comma_separated_list = delimitedList( Optional( quotedString.copy() | _commasepitem, default="") ).setName("comma separated list")
"""Predefined expression of 1 or more printable words or quoted strings, separated by commas."""
upcaseTokens = staticmethod(tokenMap(lambda t: _ustr(t).upper()))
"""Parse action to convert tokens to upper case."""
downcaseTokens = staticmethod(tokenMap(lambda t: _ustr(t).lower()))
"""Parse action to convert tokens to lower case."""
if __name__ == "__main__":
selectToken = CaselessLiteral("select")
fromToken = CaselessLiteral("from")
ident = Word(alphas, alphanums + "_$")
columnName = delimitedList(ident, ".", combine=True).setParseAction(upcaseTokens)
columnNameList = Group(delimitedList(columnName)).setName("columns")
columnSpec = ('*' | columnNameList)
tableName = delimitedList(ident, ".", combine=True).setParseAction(upcaseTokens)
tableNameList = Group(delimitedList(tableName)).setName("tables")
simpleSQL = selectToken("command") + columnSpec("columns") + fromToken + tableNameList("tables")
# demo runTests method, including embedded comments in test string
simpleSQL.runTests("""
# '*' as column list and dotted table name
select * from SYS.XYZZY
# caseless match on "SELECT", and casts back to "select"
SELECT * from XYZZY, ABC
# list of column names, and mixed case SELECT keyword
Select AA,BB,CC from Sys.dual
# multiple tables
Select A, B, C from Sys.dual, Table2
# invalid SELECT keyword - should fail
Xelect A, B, C from Sys.dual
# incomplete command - should fail
Select
# invalid column name - should fail
Select ^^^ frox Sys.dual
""")
pyparsing_common.number.runTests("""
100
-100
+100
3.14159
6.02e23
1e-12
""")
# any int or real number, returned as float
pyparsing_common.fnumber.runTests("""
100
-100
+100
3.14159
6.02e23
1e-12
""")
pyparsing_common.hex_integer.runTests("""
100
FF
""")
import uuid
pyparsing_common.uuid.setParseAction(tokenMap(uuid.UUID))
pyparsing_common.uuid.runTests("""
12345678-1234-5678-1234-567812345678
""")
| 225,319 | 38.384723 | 195 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/venv/lib/python3.6/site-packages/cycler.py
|
"""
Cycler
======
Cycling through combinations of values, producing dictionaries.
You can add cyclers::
from cycler import cycler
cc = (cycler(color=list('rgb')) +
cycler(linestyle=['-', '--', '-.']))
for d in cc:
print(d)
Results in::
{'color': 'r', 'linestyle': '-'}
{'color': 'g', 'linestyle': '--'}
{'color': 'b', 'linestyle': '-.'}
You can multiply cyclers::
from cycler import cycler
cc = (cycler(color=list('rgb')) *
cycler(linestyle=['-', '--', '-.']))
for d in cc:
print(d)
Results in::
{'color': 'r', 'linestyle': '-'}
{'color': 'r', 'linestyle': '--'}
{'color': 'r', 'linestyle': '-.'}
{'color': 'g', 'linestyle': '-'}
{'color': 'g', 'linestyle': '--'}
{'color': 'g', 'linestyle': '-.'}
{'color': 'b', 'linestyle': '-'}
{'color': 'b', 'linestyle': '--'}
{'color': 'b', 'linestyle': '-.'}
"""
from __future__ import (absolute_import, division, print_function,
unicode_literals)
import six
from itertools import product, cycle
from six.moves import zip, reduce
from operator import mul, add
import copy
__version__ = '0.10.0'
def _process_keys(left, right):
"""
Helper function to compose cycler keys
Parameters
----------
left, right : iterable of dictionaries or None
The cyclers to be composed
Returns
-------
keys : set
The keys in the composition of the two cyclers
"""
l_peek = next(iter(left)) if left is not None else {}
r_peek = next(iter(right)) if right is not None else {}
l_key = set(l_peek.keys())
r_key = set(r_peek.keys())
if l_key & r_key:
raise ValueError("Can not compose overlapping cycles")
return l_key | r_key
class Cycler(object):
"""
Composable cycles
This class has compositions methods:
``+``
for 'inner' products (zip)
``+=``
in-place ``+``
``*``
for outer products (itertools.product) and integer multiplication
``*=``
in-place ``*``
and supports basic slicing via ``[]``
Parameters
----------
left : Cycler or None
The 'left' cycler
right : Cycler or None
The 'right' cycler
op : func or None
Function which composes the 'left' and 'right' cyclers.
"""
def __call__(self):
return cycle(self)
def __init__(self, left, right=None, op=None):
"""Semi-private init
Do not use this directly, use `cycler` function instead.
"""
if isinstance(left, Cycler):
self._left = Cycler(left._left, left._right, left._op)
elif left is not None:
# Need to copy the dictionary or else that will be a residual
# mutable that could lead to strange errors
self._left = [copy.copy(v) for v in left]
else:
self._left = None
if isinstance(right, Cycler):
self._right = Cycler(right._left, right._right, right._op)
elif right is not None:
# Need to copy the dictionary or else that will be a residual
# mutable that could lead to strange errors
self._right = [copy.copy(v) for v in right]
else:
self._right = None
self._keys = _process_keys(self._left, self._right)
self._op = op
@property
def keys(self):
"""
The keys this Cycler knows about
"""
return set(self._keys)
def change_key(self, old, new):
"""
Change a key in this cycler to a new name.
Modification is performed in-place.
Does nothing if the old key is the same as the new key.
Raises a ValueError if the new key is already a key.
Raises a KeyError if the old key isn't a key.
"""
if old == new:
return
if new in self._keys:
raise ValueError("Can't replace %s with %s, %s is already a key" %
(old, new, new))
if old not in self._keys:
raise KeyError("Can't replace %s with %s, %s is not a key" %
(old, new, old))
self._keys.remove(old)
self._keys.add(new)
if self._right is not None and old in self._right.keys:
self._right.change_key(old, new)
# self._left should always be non-None
# if self._keys is non-empty.
elif isinstance(self._left, Cycler):
self._left.change_key(old, new)
else:
# It should be completely safe at this point to
# assume that the old key can be found in each
# iteration.
self._left = [{new: entry[old]} for entry in self._left]
def _compose(self):
"""
Compose the 'left' and 'right' components of this cycle
with the proper operation (zip or product as of now)
"""
for a, b in self._op(self._left, self._right):
out = dict()
out.update(a)
out.update(b)
yield out
@classmethod
def _from_iter(cls, label, itr):
"""
Class method to create 'base' Cycler objects
that do not have a 'right' or 'op' and for which
the 'left' object is not another Cycler.
Parameters
----------
label : str
The property key.
itr : iterable
Finite length iterable of the property values.
Returns
-------
cycler : Cycler
New 'base' `Cycler`
"""
ret = cls(None)
ret._left = list({label: v} for v in itr)
ret._keys = set([label])
return ret
def __getitem__(self, key):
# TODO : maybe add numpy style fancy slicing
if isinstance(key, slice):
trans = self.by_key()
return reduce(add, (_cycler(k, v[key])
for k, v in six.iteritems(trans)))
else:
raise ValueError("Can only use slices with Cycler.__getitem__")
def __iter__(self):
if self._right is None:
return iter(dict(l) for l in self._left)
return self._compose()
def __add__(self, other):
"""
Pair-wise combine two equal length cycles (zip)
Parameters
----------
other : Cycler
The second Cycler
"""
if len(self) != len(other):
raise ValueError("Can only add equal length cycles, "
"not {0} and {1}".format(len(self), len(other)))
return Cycler(self, other, zip)
def __mul__(self, other):
"""
Outer product of two cycles (`itertools.product`) or integer
multiplication.
Parameters
----------
other : Cycler or int
The second Cycler or integer
"""
if isinstance(other, Cycler):
return Cycler(self, other, product)
elif isinstance(other, int):
trans = self.by_key()
return reduce(add, (_cycler(k, v*other)
for k, v in six.iteritems(trans)))
else:
return NotImplemented
def __rmul__(self, other):
return self * other
def __len__(self):
op_dict = {zip: min, product: mul}
if self._right is None:
return len(self._left)
l_len = len(self._left)
r_len = len(self._right)
return op_dict[self._op](l_len, r_len)
def __iadd__(self, other):
"""
In-place pair-wise combine two equal length cycles (zip)
Parameters
----------
other : Cycler
The second Cycler
"""
if not isinstance(other, Cycler):
raise TypeError("Cannot += with a non-Cycler object")
# True shallow copy of self is fine since this is in-place
old_self = copy.copy(self)
self._keys = _process_keys(old_self, other)
self._left = old_self
self._op = zip
self._right = Cycler(other._left, other._right, other._op)
return self
def __imul__(self, other):
"""
In-place outer product of two cycles (`itertools.product`)
Parameters
----------
other : Cycler
The second Cycler
"""
if not isinstance(other, Cycler):
raise TypeError("Cannot *= with a non-Cycler object")
# True shallow copy of self is fine since this is in-place
old_self = copy.copy(self)
self._keys = _process_keys(old_self, other)
self._left = old_self
self._op = product
self._right = Cycler(other._left, other._right, other._op)
return self
def __eq__(self, other):
"""
Check equality
"""
if len(self) != len(other):
return False
if self.keys ^ other.keys:
return False
return all(a == b for a, b in zip(self, other))
def __repr__(self):
op_map = {zip: '+', product: '*'}
if self._right is None:
lab = self.keys.pop()
itr = list(v[lab] for v in self)
return "cycler({lab!r}, {itr!r})".format(lab=lab, itr=itr)
else:
op = op_map.get(self._op, '?')
msg = "({left!r} {op} {right!r})"
return msg.format(left=self._left, op=op, right=self._right)
def _repr_html_(self):
# an table showing the value of each key through a full cycle
output = "<table>"
sorted_keys = sorted(self.keys, key=repr)
for key in sorted_keys:
output += "<th>{key!r}</th>".format(key=key)
for d in iter(self):
output += "<tr>"
for k in sorted_keys:
output += "<td>{val!r}</td>".format(val=d[k])
output += "</tr>"
output += "</table>"
return output
def by_key(self):
"""Values by key
This returns the transposed values of the cycler. Iterating
over a `Cycler` yields dicts with a single value for each key,
this method returns a `dict` of `list` which are the values
for the given key.
The returned value can be used to create an equivalent `Cycler`
using only `+`.
Returns
-------
transpose : dict
dict of lists of the values for each key.
"""
# TODO : sort out if this is a bottle neck, if there is a better way
# and if we care.
keys = self.keys
# change this to dict comprehension when drop 2.6
out = dict((k, list()) for k in keys)
for d in self:
for k in keys:
out[k].append(d[k])
return out
# for back compatibility
_transpose = by_key
def simplify(self):
"""Simplify the Cycler
Returned as a composition using only sums (no multiplications)
Returns
-------
simple : Cycler
An equivalent cycler using only summation"""
# TODO: sort out if it is worth the effort to make sure this is
# balanced. Currently it is is
# (((a + b) + c) + d) vs
# ((a + b) + (c + d))
# I would believe that there is some performance implications
trans = self.by_key()
return reduce(add, (_cycler(k, v) for k, v in six.iteritems(trans)))
def concat(self, other):
"""Concatenate this cycler and an other.
The keys must match exactly.
This returns a single Cycler which is equivalent to
`itertools.chain(self, other)`
Examples
--------
>>> num = cycler('a', range(3))
>>> let = cycler('a', 'abc')
>>> num.concat(let)
cycler('a', [0, 1, 2, 'a', 'b', 'c'])
Parameters
----------
other : `Cycler`
The `Cycler` to concatenate to this one.
Returns
-------
ret : `Cycler`
The concatenated `Cycler`
"""
return concat(self, other)
def concat(left, right):
"""Concatenate two cyclers.
The keys must match exactly.
This returns a single Cycler which is equivalent to
`itertools.chain(left, right)`
Examples
--------
>>> num = cycler('a', range(3))
>>> let = cycler('a', 'abc')
>>> num.concat(let)
cycler('a', [0, 1, 2, 'a', 'b', 'c'])
Parameters
----------
left, right : `Cycler`
The two `Cycler` instances to concatenate
Returns
-------
ret : `Cycler`
The concatenated `Cycler`
"""
if left.keys != right.keys:
msg = '\n\t'.join(["Keys do not match:",
"Intersection: {both!r}",
"Disjoint: {just_one!r}"]).format(
both=left.keys & right.keys,
just_one=left.keys ^ right.keys)
raise ValueError(msg)
_l = left.by_key()
_r = right.by_key()
return reduce(add, (_cycler(k, _l[k] + _r[k]) for k in left.keys))
def cycler(*args, **kwargs):
"""
Create a new `Cycler` object from a single positional argument,
a pair of positional arguments, or the combination of keyword arguments.
cycler(arg)
cycler(label1=itr1[, label2=iter2[, ...]])
cycler(label, itr)
Form 1 simply copies a given `Cycler` object.
Form 2 composes a `Cycler` as an inner product of the
pairs of keyword arguments. In other words, all of the
iterables are cycled simultaneously, as if through zip().
Form 3 creates a `Cycler` from a label and an iterable.
This is useful for when the label cannot be a keyword argument
(e.g., an integer or a name that has a space in it).
Parameters
----------
arg : Cycler
Copy constructor for Cycler (does a shallow copy of iterables).
label : name
The property key. In the 2-arg form of the function,
the label can be any hashable object. In the keyword argument
form of the function, it must be a valid python identifier.
itr : iterable
Finite length iterable of the property values.
Can be a single-property `Cycler` that would
be like a key change, but as a shallow copy.
Returns
-------
cycler : Cycler
New `Cycler` for the given property
"""
if args and kwargs:
raise TypeError("cyl() can only accept positional OR keyword "
"arguments -- not both.")
if len(args) == 1:
if not isinstance(args[0], Cycler):
raise TypeError("If only one positional argument given, it must "
" be a Cycler instance.")
return Cycler(args[0])
elif len(args) == 2:
return _cycler(*args)
elif len(args) > 2:
raise TypeError("Only a single Cycler can be accepted as the lone "
"positional argument. Use keyword arguments instead.")
if kwargs:
return reduce(add, (_cycler(k, v) for k, v in six.iteritems(kwargs)))
raise TypeError("Must have at least a positional OR keyword arguments")
def _cycler(label, itr):
"""
Create a new `Cycler` object from a property name and
iterable of values.
Parameters
----------
label : hashable
The property key.
itr : iterable
Finite length iterable of the property values.
Returns
-------
cycler : Cycler
New `Cycler` for the given property
"""
if isinstance(itr, Cycler):
keys = itr.keys
if len(keys) != 1:
msg = "Can not create Cycler from a multi-property Cycler"
raise ValueError(msg)
lab = keys.pop()
# Doesn't need to be a new list because
# _from_iter() will be creating that new list anyway.
itr = (v[lab] for v in itr)
return Cycler._from_iter(label, itr)
| 15,959 | 27.550984 | 78 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/venv/lib/python3.6/site-packages/idna/core.py
|
from . import idnadata
import bisect
import unicodedata
import re
import sys
from .intranges import intranges_contain
_virama_combining_class = 9
_alabel_prefix = b'xn--'
_unicode_dots_re = re.compile(u'[\u002e\u3002\uff0e\uff61]')
if sys.version_info[0] == 3:
unicode = str
unichr = chr
class IDNAError(UnicodeError):
""" Base exception for all IDNA-encoding related problems """
pass
class IDNABidiError(IDNAError):
""" Exception when bidirectional requirements are not satisfied """
pass
class InvalidCodepoint(IDNAError):
""" Exception when a disallowed or unallocated codepoint is used """
pass
class InvalidCodepointContext(IDNAError):
""" Exception when the codepoint is not valid in the context it is used """
pass
def _combining_class(cp):
v = unicodedata.combining(unichr(cp))
if v == 0:
if not unicodedata.name(unichr(cp)):
raise ValueError("Unknown character in unicodedata")
return v
def _is_script(cp, script):
return intranges_contain(ord(cp), idnadata.scripts[script])
def _punycode(s):
return s.encode('punycode')
def _unot(s):
return 'U+{0:04X}'.format(s)
def valid_label_length(label):
if len(label) > 63:
return False
return True
def valid_string_length(label, trailing_dot):
if len(label) > (254 if trailing_dot else 253):
return False
return True
def check_bidi(label, check_ltr=False):
# Bidi rules should only be applied if string contains RTL characters
bidi_label = False
for (idx, cp) in enumerate(label, 1):
direction = unicodedata.bidirectional(cp)
if direction == '':
# String likely comes from a newer version of Unicode
raise IDNABidiError('Unknown directionality in label {0} at position {1}'.format(repr(label), idx))
if direction in ['R', 'AL', 'AN']:
bidi_label = True
if not bidi_label and not check_ltr:
return True
# Bidi rule 1
direction = unicodedata.bidirectional(label[0])
if direction in ['R', 'AL']:
rtl = True
elif direction == 'L':
rtl = False
else:
raise IDNABidiError('First codepoint in label {0} must be directionality L, R or AL'.format(repr(label)))
valid_ending = False
number_type = False
for (idx, cp) in enumerate(label, 1):
direction = unicodedata.bidirectional(cp)
if rtl:
# Bidi rule 2
if not direction in ['R', 'AL', 'AN', 'EN', 'ES', 'CS', 'ET', 'ON', 'BN', 'NSM']:
raise IDNABidiError('Invalid direction for codepoint at position {0} in a right-to-left label'.format(idx))
# Bidi rule 3
if direction in ['R', 'AL', 'EN', 'AN']:
valid_ending = True
elif direction != 'NSM':
valid_ending = False
# Bidi rule 4
if direction in ['AN', 'EN']:
if not number_type:
number_type = direction
else:
if number_type != direction:
raise IDNABidiError('Can not mix numeral types in a right-to-left label')
else:
# Bidi rule 5
if not direction in ['L', 'EN', 'ES', 'CS', 'ET', 'ON', 'BN', 'NSM']:
raise IDNABidiError('Invalid direction for codepoint at position {0} in a left-to-right label'.format(idx))
# Bidi rule 6
if direction in ['L', 'EN']:
valid_ending = True
elif direction != 'NSM':
valid_ending = False
if not valid_ending:
raise IDNABidiError('Label ends with illegal codepoint directionality')
return True
def check_initial_combiner(label):
if unicodedata.category(label[0])[0] == 'M':
raise IDNAError('Label begins with an illegal combining character')
return True
def check_hyphen_ok(label):
if label[2:4] == '--':
raise IDNAError('Label has disallowed hyphens in 3rd and 4th position')
if label[0] == '-' or label[-1] == '-':
raise IDNAError('Label must not start or end with a hyphen')
return True
def check_nfc(label):
if unicodedata.normalize('NFC', label) != label:
raise IDNAError('Label must be in Normalization Form C')
def valid_contextj(label, pos):
cp_value = ord(label[pos])
if cp_value == 0x200c:
if pos > 0:
if _combining_class(ord(label[pos - 1])) == _virama_combining_class:
return True
ok = False
for i in range(pos-1, -1, -1):
joining_type = idnadata.joining_types.get(ord(label[i]))
if joining_type == ord('T'):
continue
if joining_type in [ord('L'), ord('D')]:
ok = True
break
if not ok:
return False
ok = False
for i in range(pos+1, len(label)):
joining_type = idnadata.joining_types.get(ord(label[i]))
if joining_type == ord('T'):
continue
if joining_type in [ord('R'), ord('D')]:
ok = True
break
return ok
if cp_value == 0x200d:
if pos > 0:
if _combining_class(ord(label[pos - 1])) == _virama_combining_class:
return True
return False
else:
return False
def valid_contexto(label, pos, exception=False):
cp_value = ord(label[pos])
if cp_value == 0x00b7:
if 0 < pos < len(label)-1:
if ord(label[pos - 1]) == 0x006c and ord(label[pos + 1]) == 0x006c:
return True
return False
elif cp_value == 0x0375:
if pos < len(label)-1 and len(label) > 1:
return _is_script(label[pos + 1], 'Greek')
return False
elif cp_value == 0x05f3 or cp_value == 0x05f4:
if pos > 0:
return _is_script(label[pos - 1], 'Hebrew')
return False
elif cp_value == 0x30fb:
for cp in label:
if cp == u'\u30fb':
continue
if _is_script(cp, 'Hiragana') or _is_script(cp, 'Katakana') or _is_script(cp, 'Han'):
return True
return False
elif 0x660 <= cp_value <= 0x669:
for cp in label:
if 0x6f0 <= ord(cp) <= 0x06f9:
return False
return True
elif 0x6f0 <= cp_value <= 0x6f9:
for cp in label:
if 0x660 <= ord(cp) <= 0x0669:
return False
return True
def check_label(label):
if isinstance(label, (bytes, bytearray)):
label = label.decode('utf-8')
if len(label) == 0:
raise IDNAError('Empty Label')
check_nfc(label)
check_hyphen_ok(label)
check_initial_combiner(label)
for (pos, cp) in enumerate(label):
cp_value = ord(cp)
if intranges_contain(cp_value, idnadata.codepoint_classes['PVALID']):
continue
elif intranges_contain(cp_value, idnadata.codepoint_classes['CONTEXTJ']):
try:
if not valid_contextj(label, pos):
raise InvalidCodepointContext('Joiner {0} not allowed at position {1} in {2}'.format(
_unot(cp_value), pos+1, repr(label)))
except ValueError:
raise IDNAError('Unknown codepoint adjacent to joiner {0} at position {1} in {2}'.format(
_unot(cp_value), pos+1, repr(label)))
elif intranges_contain(cp_value, idnadata.codepoint_classes['CONTEXTO']):
if not valid_contexto(label, pos):
raise InvalidCodepointContext('Codepoint {0} not allowed at position {1} in {2}'.format(_unot(cp_value), pos+1, repr(label)))
else:
raise InvalidCodepoint('Codepoint {0} at position {1} of {2} not allowed'.format(_unot(cp_value), pos+1, repr(label)))
check_bidi(label)
def alabel(label):
try:
label = label.encode('ascii')
try:
ulabel(label)
except IDNAError:
raise IDNAError('The label {0} is not a valid A-label'.format(label))
if not valid_label_length(label):
raise IDNAError('Label too long')
return label
except UnicodeEncodeError:
pass
if not label:
raise IDNAError('No Input')
label = unicode(label)
check_label(label)
label = _punycode(label)
label = _alabel_prefix + label
if not valid_label_length(label):
raise IDNAError('Label too long')
return label
def ulabel(label):
if not isinstance(label, (bytes, bytearray)):
try:
label = label.encode('ascii')
except UnicodeEncodeError:
check_label(label)
return label
label = label.lower()
if label.startswith(_alabel_prefix):
label = label[len(_alabel_prefix):]
else:
check_label(label)
return label.decode('ascii')
label = label.decode('punycode')
check_label(label)
return label
def uts46_remap(domain, std3_rules=True, transitional=False):
"""Re-map the characters in the string according to UTS46 processing."""
from .uts46data import uts46data
output = u""
try:
for pos, char in enumerate(domain):
code_point = ord(char)
uts46row = uts46data[code_point if code_point < 256 else
bisect.bisect_left(uts46data, (code_point, "Z")) - 1]
status = uts46row[1]
replacement = uts46row[2] if len(uts46row) == 3 else None
if (status == "V" or
(status == "D" and not transitional) or
(status == "3" and not std3_rules and replacement is None)):
output += char
elif replacement is not None and (status == "M" or
(status == "3" and not std3_rules) or
(status == "D" and transitional)):
output += replacement
elif status != "I":
raise IndexError()
return unicodedata.normalize("NFC", output)
except IndexError:
raise InvalidCodepoint(
"Codepoint {0} not allowed at position {1} in {2}".format(
_unot(code_point), pos + 1, repr(domain)))
def encode(s, strict=False, uts46=False, std3_rules=False, transitional=False):
if isinstance(s, (bytes, bytearray)):
s = s.decode("ascii")
if uts46:
s = uts46_remap(s, std3_rules, transitional)
trailing_dot = False
result = []
if strict:
labels = s.split('.')
else:
labels = _unicode_dots_re.split(s)
if not labels or labels == ['']:
raise IDNAError('Empty domain')
if labels[-1] == '':
del labels[-1]
trailing_dot = True
for label in labels:
s = alabel(label)
if s:
result.append(s)
else:
raise IDNAError('Empty label')
if trailing_dot:
result.append(b'')
s = b'.'.join(result)
if not valid_string_length(s, trailing_dot):
raise IDNAError('Domain too long')
return s
def decode(s, strict=False, uts46=False, std3_rules=False):
if isinstance(s, (bytes, bytearray)):
s = s.decode("ascii")
if uts46:
s = uts46_remap(s, std3_rules, False)
trailing_dot = False
result = []
if not strict:
labels = _unicode_dots_re.split(s)
else:
labels = s.split(u'.')
if not labels or labels == ['']:
raise IDNAError('Empty domain')
if not labels[-1]:
del labels[-1]
trailing_dot = True
for label in labels:
s = ulabel(label)
if s:
result.append(s)
else:
raise IDNAError('Empty label')
if trailing_dot:
result.append(u'')
return u'.'.join(result)
| 11,858 | 28.6475 | 141 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/venv/lib/python3.6/site-packages/idna/codec.py
|
from .core import encode, decode, alabel, ulabel, IDNAError
import codecs
import re
_unicode_dots_re = re.compile(u'[\u002e\u3002\uff0e\uff61]')
class Codec(codecs.Codec):
def encode(self, data, errors='strict'):
if errors != 'strict':
raise IDNAError("Unsupported error handling \"{0}\"".format(errors))
if not data:
return "", 0
return encode(data), len(data)
def decode(self, data, errors='strict'):
if errors != 'strict':
raise IDNAError("Unsupported error handling \"{0}\"".format(errors))
if not data:
return u"", 0
return decode(data), len(data)
class IncrementalEncoder(codecs.BufferedIncrementalEncoder):
def _buffer_encode(self, data, errors, final):
if errors != 'strict':
raise IDNAError("Unsupported error handling \"{0}\"".format(errors))
if not data:
return ("", 0)
labels = _unicode_dots_re.split(data)
trailing_dot = u''
if labels:
if not labels[-1]:
trailing_dot = '.'
del labels[-1]
elif not final:
# Keep potentially unfinished label until the next call
del labels[-1]
if labels:
trailing_dot = '.'
result = []
size = 0
for label in labels:
result.append(alabel(label))
if size:
size += 1
size += len(label)
# Join with U+002E
result = ".".join(result) + trailing_dot
size += len(trailing_dot)
return (result, size)
class IncrementalDecoder(codecs.BufferedIncrementalDecoder):
def _buffer_decode(self, data, errors, final):
if errors != 'strict':
raise IDNAError("Unsupported error handling \"{0}\"".format(errors))
if not data:
return (u"", 0)
# IDNA allows decoding to operate on Unicode strings, too.
if isinstance(data, unicode):
labels = _unicode_dots_re.split(data)
else:
# Must be ASCII string
data = str(data)
unicode(data, "ascii")
labels = data.split(".")
trailing_dot = u''
if labels:
if not labels[-1]:
trailing_dot = u'.'
del labels[-1]
elif not final:
# Keep potentially unfinished label until the next call
del labels[-1]
if labels:
trailing_dot = u'.'
result = []
size = 0
for label in labels:
result.append(ulabel(label))
if size:
size += 1
size += len(label)
result = u".".join(result) + trailing_dot
size += len(trailing_dot)
return (result, size)
class StreamWriter(Codec, codecs.StreamWriter):
pass
class StreamReader(Codec, codecs.StreamReader):
pass
def getregentry():
return codecs.CodecInfo(
name='idna',
encode=Codec().encode,
decode=Codec().decode,
incrementalencoder=IncrementalEncoder,
incrementaldecoder=IncrementalDecoder,
streamwriter=StreamWriter,
streamreader=StreamReader,
)
| 3,299 | 26.731092 | 80 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/venv/lib/python3.6/site-packages/idna/intranges.py
|
"""
Given a list of integers, made up of (hopefully) a small number of long runs
of consecutive integers, compute a representation of the form
((start1, end1), (start2, end2) ...). Then answer the question "was x present
in the original list?" in time O(log(# runs)).
"""
import bisect
def intranges_from_list(list_):
"""Represent a list of integers as a sequence of ranges:
((start_0, end_0), (start_1, end_1), ...), such that the original
integers are exactly those x such that start_i <= x < end_i for some i.
Ranges are encoded as single integers (start << 32 | end), not as tuples.
"""
sorted_list = sorted(list_)
ranges = []
last_write = -1
for i in range(len(sorted_list)):
if i+1 < len(sorted_list):
if sorted_list[i] == sorted_list[i+1]-1:
continue
current_range = sorted_list[last_write+1:i+1]
ranges.append(_encode_range(current_range[0], current_range[-1] + 1))
last_write = i
return tuple(ranges)
def _encode_range(start, end):
return (start << 32) | end
def _decode_range(r):
return (r >> 32), (r & ((1 << 32) - 1))
def intranges_contain(int_, ranges):
"""Determine if `int_` falls into one of the ranges in `ranges`."""
tuple_ = _encode_range(int_, 0)
pos = bisect.bisect_left(ranges, tuple_)
# we could be immediately ahead of a tuple (start, end)
# with start < int_ <= end
if pos > 0:
left, right = _decode_range(ranges[pos-1])
if left <= int_ < right:
return True
# or we could be immediately behind a tuple (int_, end)
if pos < len(ranges):
left, _ = _decode_range(ranges[pos])
if left == int_:
return True
return False
| 1,749 | 31.407407 | 77 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/venv/lib/python3.6/site-packages/idna/package_data.py
|
__version__ = '2.7'
| 21 | 6.333333 | 19 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/venv/lib/python3.6/site-packages/idna/__init__.py
|
from .package_data import __version__
from .core import *
| 58 | 18.666667 | 37 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/venv/lib/python3.6/site-packages/idna/uts46data.py
|
# This file is automatically generated by tools/idna-data
# vim: set fileencoding=utf-8 :
"""IDNA Mapping Table from UTS46."""
__version__ = "10.0.0"
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| 188,990 | 22.104034 | 57 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/venv/lib/python3.6/site-packages/idna/compat.py
|
from .core import *
from .codec import *
def ToASCII(label):
return encode(label)
def ToUnicode(label):
return decode(label)
def nameprep(s):
raise NotImplementedError("IDNA 2008 does not utilise nameprep protocol")
| 232 | 16.923077 | 77 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/venv/lib/python3.6/site-packages/idna/idnadata.py
|
# This file is automatically generated by tools/idna-data
__version__ = "10.0.0"
scripts = {
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0x2ceb00002ebe1,
),
'CONTEXTJ': (
0x200c0000200e,
),
'CONTEXTO': (
0xb7000000b8,
0x37500000376,
0x5f3000005f5,
0x6600000066a,
0x6f0000006fa,
0x30fb000030fc,
),
}
| 39,285 | 19.742344 | 57 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/venv/lib/python3.6/site-packages/gym/error.py
|
import sys
class Error(Exception):
pass
# Local errors
class Unregistered(Error):
"""Raised when the user requests an item from the registry that does
not actually exist.
"""
pass
class UnregisteredEnv(Unregistered):
"""Raised when the user requests an env from the registry that does
not actually exist.
"""
pass
class UnregisteredBenchmark(Unregistered):
"""Raised when the user requests an env from the registry that does
not actually exist.
"""
pass
class DeprecatedEnv(Error):
"""Raised when the user requests an env from the registry with an
older version number than the latest env with the same name.
"""
pass
class UnseedableEnv(Error):
"""Raised when the user tries to seed an env that does not support
seeding.
"""
pass
class DependencyNotInstalled(Error):
pass
class UnsupportedMode(Exception):
"""Raised when the user requests a rendering mode not supported by the
environment.
"""
pass
class ResetNeeded(Exception):
"""When the monitor is active, raised when the user tries to step an
environment that's already done.
"""
pass
class ResetNotAllowed(Exception):
"""When the monitor is active, raised when the user tries to step an
environment that's not yet done.
"""
pass
class InvalidAction(Exception):
"""Raised when the user performs an action not contained within the
action space
"""
pass
# API errors
class APIError(Error):
def __init__(self, message=None, http_body=None, http_status=None,
json_body=None, headers=None):
super(APIError, self).__init__(message)
if http_body and hasattr(http_body, 'decode'):
try:
http_body = http_body.decode('utf-8')
except:
http_body = ('<Could not decode body as utf-8. '
'Please report to [email protected]>')
self._message = message
self.http_body = http_body
self.http_status = http_status
self.json_body = json_body
self.headers = headers or {}
self.request_id = self.headers.get('request-id', None)
def __unicode__(self):
if self.request_id is not None:
msg = self._message or "<empty message>"
return u"Request {0}: {1}".format(self.request_id, msg)
else:
return self._message
def __str__(self):
try: # Python 2
return unicode(self).encode('utf-8')
except NameError: # Python 3
return self.__unicode__()
class APIConnectionError(APIError):
pass
class InvalidRequestError(APIError):
def __init__(self, message, param, http_body=None,
http_status=None, json_body=None, headers=None):
super(InvalidRequestError, self).__init__(
message, http_body, http_status, json_body,
headers)
self.param = param
class AuthenticationError(APIError):
pass
class RateLimitError(APIError):
pass
# Video errors
class VideoRecorderError(Error):
pass
class InvalidFrame(Error):
pass
# Wrapper errors
class DoubleWrapperError(Error):
pass
class WrapAfterConfigureError(Error):
pass
class RetriesExceededError(Error):
pass
| 3,324 | 22.75 | 74 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/venv/lib/python3.6/site-packages/gym/core.py
|
from gym import logger
import numpy as np
import gym
from gym import error
from gym.utils import closer
env_closer = closer.Closer()
# Env-related abstractions
class Env(object):
"""The main OpenAI Gym class. It encapsulates an environment with
arbitrary behind-the-scenes dynamics. An environment can be
partially or fully observed.
The main API methods that users of this class need to know are:
step
reset
render
close
seed
And set the following attributes:
action_space: The Space object corresponding to valid actions
observation_space: The Space object corresponding to valid observations
reward_range: A tuple corresponding to the min and max possible rewards
Note: a default reward range set to [-inf,+inf] already exists. Set it if you want a narrower range.
The methods are accessed publicly as "step", "reset", etc.. The
non-underscored versions are wrapper methods to which we may add
functionality over time.
"""
# Set this in SOME subclasses
metadata = {'render.modes': []}
reward_range = (-np.inf, np.inf)
spec = None
# Set these in ALL subclasses
action_space = None
observation_space = None
def step(self, action):
"""Run one timestep of the environment's dynamics. When end of
episode is reached, you are responsible for calling `reset()`
to reset this environment's state.
Accepts an action and returns a tuple (observation, reward, done, info).
Args:
action (object): an action provided by the environment
Returns:
observation (object): agent's observation of the current environment
reward (float) : amount of reward returned after previous action
done (boolean): whether the episode has ended, in which case further step() calls will return undefined results
info (dict): contains auxiliary diagnostic information (helpful for debugging, and sometimes learning)
"""
raise NotImplementedError
def reset(self):
"""Resets the state of the environment and returns an initial observation.
Returns: observation (object): the initial observation of the
space.
"""
raise NotImplementedError
def render(self, mode='human'):
"""Renders the environment.
The set of supported modes varies per environment. (And some
environments do not support rendering at all.) By convention,
if mode is:
- human: render to the current display or terminal and
return nothing. Usually for human consumption.
- rgb_array: Return an numpy.ndarray with shape (x, y, 3),
representing RGB values for an x-by-y pixel image, suitable
for turning into a video.
- ansi: Return a string (str) or StringIO.StringIO containing a
terminal-style text representation. The text can include newlines
and ANSI escape sequences (e.g. for colors).
Note:
Make sure that your class's metadata 'render.modes' key includes
the list of supported modes. It's recommended to call super()
in implementations to use the functionality of this method.
Args:
mode (str): the mode to render with
close (bool): close all open renderings
Example:
class MyEnv(Env):
metadata = {'render.modes': ['human', 'rgb_array']}
def render(self, mode='human'):
if mode == 'rgb_array':
return np.array(...) # return RGB frame suitable for video
elif mode is 'human':
... # pop up a window and render
else:
super(MyEnv, self).render(mode=mode) # just raise an exception
"""
raise NotImplementedError
def close(self):
"""Override _close in your subclass to perform any necessary cleanup.
Environments will automatically close() themselves when
garbage collected or when the program exits.
"""
return
def seed(self, seed=None):
"""Sets the seed for this env's random number generator(s).
Note:
Some environments use multiple pseudorandom number generators.
We want to capture all such seeds used in order to ensure that
there aren't accidental correlations between multiple generators.
Returns:
list<bigint>: Returns the list of seeds used in this env's random
number generators. The first value in the list should be the
"main" seed, or the value which a reproducer should pass to
'seed'. Often, the main seed equals the provided 'seed', but
this won't be true if seed=None, for example.
"""
logger.warn("Could not seed environment %s", self)
return
@property
def unwrapped(self):
"""Completely unwrap this env.
Returns:
gym.Env: The base non-wrapped gym.Env instance
"""
return self
def __str__(self):
if self.spec is None:
return '<{} instance>'.format(type(self).__name__)
else:
return '<{}<{}>>'.format(type(self).__name__, self.spec.id)
class GoalEnv(Env):
"""A goal-based environment. It functions just as any regular OpenAI Gym environment but it
imposes a required structure on the observation_space. More concretely, the observation
space is required to contain at least three elements, namely `observation`, `desired_goal`, and
`achieved_goal`. Here, `desired_goal` specifies the goal that the agent should attempt to achieve.
`achieved_goal` is the goal that it currently achieved instead. `observation` contains the
actual observations of the environment as per usual.
"""
def reset(self):
# Enforce that each GoalEnv uses a Goal-compatible observation space.
if not isinstance(self.observation_space, gym.spaces.Dict):
raise error.Error('GoalEnv requires an observation space of type gym.spaces.Dict')
result = super(GoalEnv, self).reset()
for key in ['observation', 'achieved_goal', 'desired_goal']:
if key not in result:
raise error.Error('GoalEnv requires the "{}" key to be part of the observation dictionary.'.format(key))
return result
def compute_reward(self, achieved_goal, desired_goal, info):
"""Compute the step reward. This externalizes the reward function and makes
it dependent on an a desired goal and the one that was achieved. If you wish to include
additional rewards that are independent of the goal, you can include the necessary values
to derive it in info and compute it accordingly.
Args:
achieved_goal (object): the goal that was achieved during execution
desired_goal (object): the desired goal that we asked the agent to attempt to achieve
info (dict): an info dictionary with additional information
Returns:
float: The reward that corresponds to the provided achieved goal w.r.t. to the desired
goal. Note that the following should always hold true:
ob, reward, done, info = env.step()
assert reward == env.compute_reward(ob['achieved_goal'], ob['goal'], info)
"""
raise NotImplementedError()
# Space-related abstractions
class Space(object):
"""Defines the observation and action spaces, so you can write generic
code that applies to any Env. For example, you can choose a random
action.
"""
def __init__(self, shape=None, dtype=None):
self.shape = None if shape is None else tuple(shape)
self.dtype = None if dtype is None else np.dtype(dtype)
def sample(self):
"""
Uniformly randomly sample a random element of this space
"""
raise NotImplementedError
def contains(self, x):
"""
Return boolean specifying if x is a valid
member of this space
"""
raise NotImplementedError
def to_jsonable(self, sample_n):
"""Convert a batch of samples from this space to a JSONable data type."""
# By default, assume identity is JSONable
return sample_n
def from_jsonable(self, sample_n):
"""Convert a JSONable data type to a batch of samples from this space."""
# By default, assume identity is JSONable
return sample_n
warn_once = True
def deprecated_warn_once(text):
global warn_once
if not warn_once: return
warn_once = False
logger.warn(text)
class Wrapper(Env):
env = None
def __init__(self, env):
self.env = env
self.action_space = self.env.action_space
self.observation_space = self.env.observation_space
self.reward_range = self.env.reward_range
self.metadata = self.env.metadata
self._warn_double_wrap()
@classmethod
def class_name(cls):
return cls.__name__
def _warn_double_wrap(self):
env = self.env
while True:
if isinstance(env, Wrapper):
if env.class_name() == self.class_name():
raise error.DoubleWrapperError("Attempted to double wrap with Wrapper: {}".format(self.__class__.__name__))
env = env.env
else:
break
def step(self, action):
if hasattr(self, "_step"):
deprecated_warn_once("%s doesn't implement 'step' method, but it implements deprecated '_step' method." % type(self))
self.step = self._step
return self.step(action)
else:
deprecated_warn_once("%s doesn't implement 'step' method, " % type(self) +
"which is required for wrappers derived directly from Wrapper. Deprecated default implementation is used.")
return self.env.step(action)
def reset(self, **kwargs):
if hasattr(self, "_reset"):
deprecated_warn_once("%s doesn't implement 'reset' method, but it implements deprecated '_reset' method." % type(self))
self.reset = self._reset
return self._reset(**kwargs)
else:
deprecated_warn_once("%s doesn't implement 'reset' method, " % type(self) +
"which is required for wrappers derived directly from Wrapper. Deprecated default implementation is used.")
return self.env.reset(**kwargs)
def render(self, mode='human'):
return self.env.render(mode)
def close(self):
if self.env:
return self.env.close()
def seed(self, seed=None):
return self.env.seed(seed)
def compute_reward(self, achieved_goal, desired_goal, info):
return self.env.compute_reward(achieved_goal, desired_goal, info)
def __str__(self):
return '<{}{}>'.format(type(self).__name__, self.env)
def __repr__(self):
return str(self)
@property
def unwrapped(self):
return self.env.unwrapped
@property
def spec(self):
return self.env.spec
class ObservationWrapper(Wrapper):
def step(self, action):
observation, reward, done, info = self.env.step(action)
return self.observation(observation), reward, done, info
def reset(self, **kwargs):
observation = self.env.reset(**kwargs)
return self.observation(observation)
def observation(self, observation):
deprecated_warn_once("%s doesn't implement 'observation' method. Maybe it implements deprecated '_observation' method." % type(self))
return self._observation(observation)
class RewardWrapper(Wrapper):
def reset(self):
return self.env.reset()
def step(self, action):
observation, reward, done, info = self.env.step(action)
return observation, self.reward(reward), done, info
def reward(self, reward):
deprecated_warn_once("%s doesn't implement 'reward' method. Maybe it implements deprecated '_reward' method." % type(self))
return self._reward(reward)
class ActionWrapper(Wrapper):
def step(self, action):
action = self.action(action)
return self.env.step(action)
def reset(self):
return self.env.reset()
def action(self, action):
deprecated_warn_once("%s doesn't implement 'action' method. Maybe it implements deprecated '_action' method." % type(self))
return self._action(action)
def reverse_action(self, action):
deprecated_warn_once("%s doesn't implement 'reverse_action' method. Maybe it implements deprecated '_reverse_action' method." % type(self))
return self._reverse_action(action)
| 12,872 | 35.467422 | 147 |
py
|
cba-pipeline-public
|
cba-pipeline-public-master/containernet/ndn-containers/ndn_headless-player/bandits/venv/lib/python3.6/site-packages/gym/logger.py
|
from gym.utils import colorize
DEBUG = 10
INFO = 20
WARN = 30
ERROR = 40
DISABLED = 50
MIN_LEVEL = 30
def set_level(level):
"""
Set logging threshold on current logger.
"""
global MIN_LEVEL
MIN_LEVEL = level
def debug(msg, *args):
if MIN_LEVEL <= INFO:
print('%s: %s'%('DEBUG', msg % args))
def info(msg, *args):
if MIN_LEVEL <= INFO:
print('%s: %s'%('INFO', msg % args))
def warn(msg, *args):
if MIN_LEVEL <= WARN:
print(colorize('%s: %s'%('WARN', msg % args), 'yellow'))
def error(msg, *args):
if MIN_LEVEL <= ERROR:
print(colorize('%s: %s'%('ERROR', msg % args), 'red'))
# DEPRECATED:
setLevel = set_level
| 685 | 18.055556 | 64 |
py
|
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