diff --git "a/llmeval-env/lib/python3.10/site-packages/transformers/models/clap/modeling_clap.py" "b/llmeval-env/lib/python3.10/site-packages/transformers/models/clap/modeling_clap.py" new file mode 100644--- /dev/null +++ "b/llmeval-env/lib/python3.10/site-packages/transformers/models/clap/modeling_clap.py" @@ -0,0 +1,2297 @@ +# coding=utf-8 +# Copyright 2023 The LAION-AI Team and The HuggingFace Team. All rights reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +""" PyTorch CLAP model.""" +import collections +import math +from dataclasses import dataclass +from typing import Any, List, Optional, Tuple, Union + +import torch +import torch.nn.functional as F +from torch import nn + +from ...activations import ACT2FN +from ...modeling_outputs import ( + BaseModelOutputWithPastAndCrossAttentions, + BaseModelOutputWithPooling, + BaseModelOutputWithPoolingAndCrossAttentions, +) +from ...modeling_utils import PreTrainedModel +from ...pytorch_utils import apply_chunking_to_forward, find_pruneable_heads_and_indices, meshgrid, prune_linear_layer +from ...utils import ( + ModelOutput, + add_start_docstrings, + add_start_docstrings_to_model_forward, + logging, + replace_return_docstrings, +) +from .configuration_clap import ClapAudioConfig, ClapConfig, ClapTextConfig + + +logger = logging.get_logger(__name__) + +_CHECKPOINT_FOR_DOC = "laion/clap-htsat-fused" + + +from ..deprecated._archive_maps import CLAP_PRETRAINED_MODEL_ARCHIVE_LIST # noqa: F401, E402 + + +# Adapted from: https://github.com/LAION-AI/CLAP/blob/6ad05a971ba0622f6acee8c41993e0d02bbed639/src/open_clip/utils.py#L191 +def interpolate(hidden_states, ratio): + """ + Interpolate data in time domain. This is used to compensate the resolution reduction in downsampling of a CNN. + + Args: + hidden_states (`torch.FloatTensor` of shape (batch_size, time_length, classes_num)): + Input hidden states + ratio (`int`): + The ratio of the length of the output to the length of the input. + """ + (batch_size, time_length, classes_num) = hidden_states.shape + upsampled = hidden_states[:, :, None, :].repeat(1, 1, ratio, 1) + upsampled = upsampled.reshape(batch_size, time_length * ratio, classes_num) + return upsampled + + +# Adapted from https://github.com/LAION-AI/CLAP/blob/6ad05a971ba0622f6acee8c41993e0d02bbed639/src/open_clip/htsat.py#L249 +def window_partition(hidden_states, window_size): + """ + Returns the resized hidden states. The output shape should be `(batch_size * num_windows, window_size, window_size, + num_channels)` + + Args: + hidden_states (`torch.FloatTensor` of shape `(batch_size, height, width, num_channels)`): + Input hidden states + window_size (`int`): + Window size + """ + batch_size, height, width, num_channels = hidden_states.shape + + hidden_states = hidden_states.view( + batch_size, height // window_size, window_size, width // window_size, window_size, num_channels + ) + windows = hidden_states.permute(0, 1, 3, 2, 4, 5).contiguous().view(-1, window_size, window_size, num_channels) + return windows + + +# Adapted from https://github.com/LAION-AI/CLAP/blob/6ad05a971ba0622f6acee8c41993e0d02bbed639/src/open_clip/htsat.py#L263 +def window_reverse(windows, window_size, height, width): + """ + Merges windows to produce higher resolution features. + Args: + windows (`torch.FloatTensor` of shape `(num_windows * batch_size, window_size, window_size, num_channels)`): + Input windows + window_size (`int`): + Window size + height (`int`): + Height of the resized audio + width (`int`): + Width of the resized audio + """ + num_channels = windows.shape[-1] + windows = windows.view(-1, height // window_size, width // window_size, window_size, window_size, num_channels) + windows = windows.permute(0, 1, 3, 2, 4, 5).contiguous().view(-1, height, width, num_channels) + return windows + + +# Copied from transformers.models.roberta.modeling_roberta.create_position_ids_from_input_ids +def create_position_ids_from_input_ids(input_ids, padding_idx, past_key_values_length=0): + """ + Replace non-padding symbols with their position numbers. Position numbers begin at padding_idx+1. Padding symbols + are ignored. This is modified from fairseq's `utils.make_positions`. + + Args: + x: torch.Tensor x: + + Returns: torch.Tensor + """ + # The series of casts and type-conversions here are carefully balanced to both work with ONNX export and XLA. + mask = input_ids.ne(padding_idx).int() + incremental_indices = (torch.cumsum(mask, dim=1).type_as(mask) + past_key_values_length) * mask + return incremental_indices.long() + padding_idx + + +# contrastive loss function, adapted from +# https://sachinruk.github.io/blog/pytorch/pytorch%20lightning/loss%20function/gpu/2021/03/07/CLIP.html#CLIP-loss-function +def contrastive_loss(logits: torch.Tensor) -> torch.Tensor: + labels = torch.arange(len(logits), device=logits.device) + return nn.functional.cross_entropy(logits, labels) + + +@dataclass +# Copied from transformers.models.clip.modeling_clip.CLIPTextModelOutput with CLIP->Clap +class ClapTextModelOutput(ModelOutput): + """ + Base class for text model's outputs that also contains a pooling of the last hidden states. + + Args: + text_embeds (`torch.FloatTensor` of shape `(batch_size, output_dim)` *optional* returned when model is initialized with `with_projection=True`): + The text embeddings obtained by applying the projection layer to the pooler_output. + last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): + Sequence of hidden-states at the output of the last layer of the model. + hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): + Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, + + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. + + Hidden-states of the model at the output of each layer plus the optional initial embedding outputs. + attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): + Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, + sequence_length)`. + + Attentions weights after the attention softmax, used to compute the weighted average in the self-attention + heads. + """ + + text_embeds: Optional[torch.FloatTensor] = None + last_hidden_state: torch.FloatTensor = None + hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None + attentions: Optional[Tuple[torch.FloatTensor, ...]] = None + + +@dataclass +class ClapAudioModelOutput(ModelOutput): + """ + ClapAudio model output to mimic the output of the original implementation. + + Args: + audio_embeds (`torch.FloatTensor` of shape `(batch_size, hidden_size)`): + The Audio embeddings obtained by applying the projection layer to the pooler_output. + last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): + Sequence of hidden-states at the output of the last layer of the model. + attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`): + Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length, + sequence_length)`. + + Attentions weights after the attention softmax, used to compute the weighted average in the self-attention + heads. + hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`): + Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, + + one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`. + + Hidden-states of the model at the output of each layer plus the optional initial embedding outputs. + """ + + audio_embeds: Optional[torch.FloatTensor] = None + last_hidden_state: torch.FloatTensor = None + hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None + attentions: Optional[Tuple[torch.FloatTensor, ...]] = None + + +@dataclass +# Copied from transformers.models.clip.modeling_clip.CLIPOutput with CLIP->Clap, vision->audio, Vision->Audio, image->audio +class ClapOutput(ModelOutput): + """ + Args: + loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `return_loss` is `True`): + Contrastive loss for audio-text similarity. + logits_per_audio:(`torch.FloatTensor` of shape `(audio_batch_size, text_batch_size)`): + The scaled dot product scores between `audio_embeds` and `text_embeds`. This represents the audio-text + similarity scores. + logits_per_text:(`torch.FloatTensor` of shape `(text_batch_size, audio_batch_size)`): + The scaled dot product scores between `text_embeds` and `audio_embeds`. This represents the text-audio + similarity scores. + text_embeds(`torch.FloatTensor` of shape `(batch_size, output_dim`): + The text embeddings obtained by applying the projection layer to the pooled output of [`ClapTextModel`]. + audio_embeds(`torch.FloatTensor` of shape `(batch_size, output_dim`): + The audio embeddings obtained by applying the projection layer to the pooled output of [`ClapAudioModel`]. + text_model_output(`BaseModelOutputWithPooling`): + The output of the [`ClapTextModel`]. + audio_model_output(`BaseModelOutputWithPooling`): + The output of the [`ClapAudioModel`]. + """ + + loss: Optional[torch.FloatTensor] = None + logits_per_audio: torch.FloatTensor = None + logits_per_text: torch.FloatTensor = None + text_embeds: torch.FloatTensor = None + audio_embeds: torch.FloatTensor = None + text_model_output: BaseModelOutputWithPooling = None + audio_model_output: BaseModelOutputWithPooling = None + + def to_tuple(self) -> Tuple[Any]: + return tuple( + self[k] if k not in ["text_model_output", "audio_model_output"] else getattr(self, k).to_tuple() + for k in self.keys() + ) + + +# Adapted from transformers.models.swin.modeling_swin.SwinDropPath +class ClapDropPath(nn.Module): + """ + Drop paths (Stochastic Depth) per sample (when applied in main path of residual blocks). This is a slightly + refactored version of the `SwinDropPath` implementation. + """ + + def __init__(self, drop_prob=None): + super().__init__() + self.drop_prob = drop_prob + + def forward(self, hidden_states): + if self.drop_prob == 0.0 or not self.training: + return hidden_states + + keep_prob = 1 - self.drop_prob + # work with diff dim tensors, not just 2D ConvNets + shape = (hidden_states.shape[0],) + (1,) * (hidden_states.ndim - 1) + + random_tensor = keep_prob + torch.rand(shape, dtype=hidden_states.dtype, device=hidden_states.device) + random_tensor.floor_() # binarize + output = hidden_states.div(keep_prob) * random_tensor + return output + + +# Adapted from https://github.com/LAION-AI/CLAP/blob/6ad05a971ba0622f6acee8c41993e0d02bbed639/src/open_clip/feature_fusion.py#L133 +class ClapAudioAFFBlock(nn.Module): + r""" + ATTENTIONAL FEATURE FUSION Block from CLAP, since in CLAP we are always in 2D mode, it is not needed to implement + the 1D version. + """ + + def __init__(self, config: ClapAudioConfig): + super().__init__() + channels = config.patch_embeds_hidden_size + downsize_ratio = config.aff_block_r + inter_channels = int(channels // downsize_ratio) + + self.local_att = nn.Sequential( + nn.Conv2d(channels, inter_channels, kernel_size=1, stride=1, padding=0), + nn.BatchNorm2d(inter_channels), + nn.ReLU(inplace=True), + nn.Conv2d(inter_channels, channels, kernel_size=1, stride=1, padding=0), + nn.BatchNorm2d(channels), + ) + self.global_att = nn.Sequential( + nn.AdaptiveAvgPool2d(1), + nn.Conv2d(channels, inter_channels, kernel_size=1, stride=1, padding=0), + nn.BatchNorm2d(inter_channels), + nn.ReLU(inplace=True), + nn.Conv2d(inter_channels, channels, kernel_size=1, stride=1, padding=0), + nn.BatchNorm2d(channels), + ) + + self.sigmoid = nn.Sigmoid() + + def forward(self, hidden_states, residual): + attention_input = hidden_states + residual + + fused_layer_output = self.local_att(attention_input) + self.global_att(attention_input) + fused_layer_output = self.sigmoid(fused_layer_output) + + output = 2 * hidden_states * fused_layer_output + 2 * residual * (1 - fused_layer_output) + return output + + +class ClapAudioPatchEmbed(nn.Module): + """ + This module converts the hidden states reshaped as an image to patch embeddings ready to be passed to the + Transformer block. + """ + + def __init__(self, config: ClapAudioConfig): + super().__init__() + img_size = (config.spec_size, config.spec_size) if isinstance(config.spec_size, int) else config.spec_size + patch_size = ( + (config.patch_size, config.patch_size) if isinstance(config.patch_size, int) else config.patch_size + ) + patch_stride = ( + (config.patch_stride, config.patch_stride) if isinstance(config.patch_stride, int) else config.patch_stride + ) + + self.img_size = img_size + self.patch_stride = patch_stride + + self.grid_size = (img_size[0] // patch_stride[0], img_size[1] // patch_stride[1]) + self.num_patches = self.grid_size[0] * self.grid_size[1] + + self.flatten = config.flatten_patch_embeds + self.enable_fusion = config.enable_fusion + + padding = ((patch_size[0] - patch_stride[0]) // 2, (patch_size[1] - patch_stride[1]) // 2) + + scale_factor = 4 if (self.enable_fusion) and (config.fusion_type == "channel_map") else 1 + + self.proj = nn.Conv2d( + config.patch_embed_input_channels * scale_factor, + config.patch_embeds_hidden_size, + kernel_size=patch_size, + stride=patch_stride, + padding=padding, + ) + + self.norm = nn.LayerNorm(config.patch_embeds_hidden_size) if config.enable_patch_layer_norm else nn.Identity() + if self.enable_fusion: + self.fusion_model = ClapAudioAFFBlock(config) + self.mel_conv2d = nn.Conv2d( + config.patch_embed_input_channels, + config.patch_embeds_hidden_size, + kernel_size=(patch_size[0], patch_size[1] * 3), + stride=(patch_stride[0], patch_stride[1] * 3), + padding=padding, + ) + + def forward(self, hidden_states, is_longer_idx=None): + if self.enable_fusion: + # retrieve the last mel as we have transposed the input + global_hidden_states = hidden_states[:, 0:1, :, :] + + # global processing + batch_size, num_channels, height, width = global_hidden_states.shape + + if height != self.img_size[0] or width != self.img_size[1]: + raise ValueError( + f"Input audio size ({height}*{width}) doesn't match model ({self.img_size[0]}*{self.img_size[1]})." + ) + + global_hidden_states = self.proj(global_hidden_states) + output_width = global_hidden_states.size(-1) + if len(is_longer_idx) > 0: + # local processing + local_hidden_states = hidden_states[is_longer_idx, 1:, :, :].contiguous() + batch_size, num_channels, height, width = local_hidden_states.shape + local_hidden_states = local_hidden_states.view(batch_size * num_channels, 1, height, width) + + local_hidden_states = self.mel_conv2d(local_hidden_states) + + _, features, height, width = local_hidden_states.shape + local_hidden_states = local_hidden_states.view(batch_size, num_channels, features, height, width) + local_hidden_states = local_hidden_states.permute((0, 2, 3, 1, 4)).contiguous().flatten(3) + + local_width = local_hidden_states.size(-1) + local_hidden_states = torch.nn.functional.pad( + local_hidden_states, (0, output_width - local_width), "constant", 0 + ) + + global_hidden_states[is_longer_idx] = self.fusion_model( + global_hidden_states[is_longer_idx], local_hidden_states + ) + hidden_states = global_hidden_states + else: + _, _, height, width = hidden_states.shape + if height != self.img_size[0] or width != self.img_size[1]: + raise ValueError( + f"Input audio size ({height}*{width}) doesn't match model ({self.img_size[0]}*{self.img_size[1]})." + ) + hidden_states = self.proj(hidden_states) + + if self.flatten: + hidden_states = hidden_states.flatten(2).transpose(1, 2) + hidden_states = self.norm(hidden_states) + return hidden_states + + +# Copied from transformers.models.swin.modeling_swin.SwinSelfAttention with Swin->ClapAudio +class ClapAudioSelfAttention(nn.Module): + def __init__(self, config, dim, num_heads, window_size): + super().__init__() + if dim % num_heads != 0: + raise ValueError( + f"The hidden size ({dim}) is not a multiple of the number of attention heads ({num_heads})" + ) + + self.num_attention_heads = num_heads + self.attention_head_size = int(dim / num_heads) + self.all_head_size = self.num_attention_heads * self.attention_head_size + self.window_size = ( + window_size if isinstance(window_size, collections.abc.Iterable) else (window_size, window_size) + ) + + self.relative_position_bias_table = nn.Parameter( + torch.zeros((2 * self.window_size[0] - 1) * (2 * self.window_size[1] - 1), num_heads) + ) + + # get pair-wise relative position index for each token inside the window + coords_h = torch.arange(self.window_size[0]) + coords_w = torch.arange(self.window_size[1]) + coords = torch.stack(meshgrid([coords_h, coords_w], indexing="ij")) + coords_flatten = torch.flatten(coords, 1) + relative_coords = coords_flatten[:, :, None] - coords_flatten[:, None, :] + relative_coords = relative_coords.permute(1, 2, 0).contiguous() + relative_coords[:, :, 0] += self.window_size[0] - 1 + relative_coords[:, :, 1] += self.window_size[1] - 1 + relative_coords[:, :, 0] *= 2 * self.window_size[1] - 1 + relative_position_index = relative_coords.sum(-1) + self.register_buffer("relative_position_index", relative_position_index) + + self.query = nn.Linear(self.all_head_size, self.all_head_size, bias=config.qkv_bias) + self.key = nn.Linear(self.all_head_size, self.all_head_size, bias=config.qkv_bias) + self.value = nn.Linear(self.all_head_size, self.all_head_size, bias=config.qkv_bias) + + self.dropout = nn.Dropout(config.attention_probs_dropout_prob) + + def transpose_for_scores(self, x): + new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size) + x = x.view(new_x_shape) + return x.permute(0, 2, 1, 3) + + def forward( + self, + hidden_states: torch.Tensor, + attention_mask: Optional[torch.FloatTensor] = None, + head_mask: Optional[torch.FloatTensor] = None, + output_attentions: Optional[bool] = False, + ) -> Tuple[torch.Tensor]: + batch_size, dim, num_channels = hidden_states.shape + mixed_query_layer = self.query(hidden_states) + + key_layer = self.transpose_for_scores(self.key(hidden_states)) + value_layer = self.transpose_for_scores(self.value(hidden_states)) + query_layer = self.transpose_for_scores(mixed_query_layer) + + # Take the dot product between "query" and "key" to get the raw attention scores. + attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2)) + + attention_scores = attention_scores / math.sqrt(self.attention_head_size) + + relative_position_bias = self.relative_position_bias_table[self.relative_position_index.view(-1)] + relative_position_bias = relative_position_bias.view( + self.window_size[0] * self.window_size[1], self.window_size[0] * self.window_size[1], -1 + ) + + relative_position_bias = relative_position_bias.permute(2, 0, 1).contiguous() + attention_scores = attention_scores + relative_position_bias.unsqueeze(0) + + if attention_mask is not None: + # Apply the attention mask is (precomputed for all layers in ClapAudioModel forward() function) + mask_shape = attention_mask.shape[0] + attention_scores = attention_scores.view( + batch_size // mask_shape, mask_shape, self.num_attention_heads, dim, dim + ) + attention_scores = attention_scores + attention_mask.unsqueeze(1).unsqueeze(0) + attention_scores = attention_scores.view(-1, self.num_attention_heads, dim, dim) + + # Normalize the attention scores to probabilities. + attention_probs = nn.functional.softmax(attention_scores, dim=-1) + + # This is actually dropping out entire tokens to attend to, which might + # seem a bit unusual, but is taken from the original Transformer paper. + attention_probs = self.dropout(attention_probs) + + # Mask heads if we want to + if head_mask is not None: + attention_probs = attention_probs * head_mask + + context_layer = torch.matmul(attention_probs, value_layer) + context_layer = context_layer.permute(0, 2, 1, 3).contiguous() + new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,) + context_layer = context_layer.view(new_context_layer_shape) + + outputs = (context_layer, attention_probs) if output_attentions else (context_layer,) + + return outputs + + +# Copied from transformers.models.swin.modeling_swin.SwinSelfOutput with Swin->ClapAudio +class ClapAudioSelfOutput(nn.Module): + def __init__(self, config, dim): + super().__init__() + self.dense = nn.Linear(dim, dim) + self.dropout = nn.Dropout(config.attention_probs_dropout_prob) + + def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: + hidden_states = self.dense(hidden_states) + hidden_states = self.dropout(hidden_states) + + return hidden_states + + +# Copied from transformers.models.swin.modeling_swin.SwinAttention with Swin->ClapAudio +class ClapAudioAttention(nn.Module): + def __init__(self, config, dim, num_heads, window_size): + super().__init__() + self.self = ClapAudioSelfAttention(config, dim, num_heads, window_size) + self.output = ClapAudioSelfOutput(config, dim) + self.pruned_heads = set() + + def prune_heads(self, heads): + if len(heads) == 0: + return + heads, index = find_pruneable_heads_and_indices( + heads, self.self.num_attention_heads, self.self.attention_head_size, self.pruned_heads + ) + + # Prune linear layers + self.self.query = prune_linear_layer(self.self.query, index) + self.self.key = prune_linear_layer(self.self.key, index) + self.self.value = prune_linear_layer(self.self.value, index) + self.output.dense = prune_linear_layer(self.output.dense, index, dim=1) + + # Update hyper params and store pruned heads + self.self.num_attention_heads = self.self.num_attention_heads - len(heads) + self.self.all_head_size = self.self.attention_head_size * self.self.num_attention_heads + self.pruned_heads = self.pruned_heads.union(heads) + + def forward( + self, + hidden_states: torch.Tensor, + attention_mask: Optional[torch.FloatTensor] = None, + head_mask: Optional[torch.FloatTensor] = None, + output_attentions: Optional[bool] = False, + ) -> Tuple[torch.Tensor]: + self_outputs = self.self(hidden_states, attention_mask, head_mask, output_attentions) + attention_output = self.output(self_outputs[0], hidden_states) + outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them + return outputs + + +# Copied from transformers.models.swin.modeling_swin.SwinIntermediate with Swin->ClapAudio +class ClapAudioIntermediate(nn.Module): + def __init__(self, config, dim): + super().__init__() + self.dense = nn.Linear(dim, int(config.mlp_ratio * dim)) + if isinstance(config.hidden_act, str): + self.intermediate_act_fn = ACT2FN[config.hidden_act] + else: + self.intermediate_act_fn = config.hidden_act + + def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: + hidden_states = self.dense(hidden_states) + hidden_states = self.intermediate_act_fn(hidden_states) + return hidden_states + + +# Copied from transformers.models.swin.modeling_swin.SwinOutput with Swin->ClapAudio +class ClapAudioOutput(nn.Module): + def __init__(self, config, dim): + super().__init__() + self.dense = nn.Linear(int(config.mlp_ratio * dim), dim) + self.dropout = nn.Dropout(config.hidden_dropout_prob) + + def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: + hidden_states = self.dense(hidden_states) + hidden_states = self.dropout(hidden_states) + return hidden_states + + +# Copied from transformers.models.swin.modeling_swin.SwinLayer with SwinDropPath->ClapDropPath, Swin->ClapAudio +class ClapAudioLayer(nn.Module): + def __init__(self, config, dim, input_resolution, num_heads, shift_size=0): + super().__init__() + self.chunk_size_feed_forward = config.chunk_size_feed_forward + self.shift_size = shift_size + self.window_size = config.window_size + self.input_resolution = input_resolution + self.layernorm_before = nn.LayerNorm(dim, eps=config.layer_norm_eps) + self.attention = ClapAudioAttention(config, dim, num_heads, window_size=self.window_size) + self.drop_path = ClapDropPath(config.drop_path_rate) if config.drop_path_rate > 0.0 else nn.Identity() + self.layernorm_after = nn.LayerNorm(dim, eps=config.layer_norm_eps) + self.intermediate = ClapAudioIntermediate(config, dim) + self.output = ClapAudioOutput(config, dim) + + def set_shift_and_window_size(self, input_resolution): + if min(input_resolution) <= self.window_size: + # if window size is larger than input resolution, we don't partition windows + self.shift_size = 0 + self.window_size = min(input_resolution) + + def get_attn_mask(self, height, width, dtype): + if self.shift_size > 0: + # calculate attention mask for SW-MSA + img_mask = torch.zeros((1, height, width, 1), dtype=dtype) + height_slices = ( + slice(0, -self.window_size), + slice(-self.window_size, -self.shift_size), + slice(-self.shift_size, None), + ) + width_slices = ( + slice(0, -self.window_size), + slice(-self.window_size, -self.shift_size), + slice(-self.shift_size, None), + ) + count = 0 + for height_slice in height_slices: + for width_slice in width_slices: + img_mask[:, height_slice, width_slice, :] = count + count += 1 + + mask_windows = window_partition(img_mask, self.window_size) + mask_windows = mask_windows.view(-1, self.window_size * self.window_size) + attn_mask = mask_windows.unsqueeze(1) - mask_windows.unsqueeze(2) + attn_mask = attn_mask.masked_fill(attn_mask != 0, float(-100.0)).masked_fill(attn_mask == 0, float(0.0)) + else: + attn_mask = None + return attn_mask + + def maybe_pad(self, hidden_states, height, width): + pad_right = (self.window_size - width % self.window_size) % self.window_size + pad_bottom = (self.window_size - height % self.window_size) % self.window_size + pad_values = (0, 0, 0, pad_right, 0, pad_bottom) + hidden_states = nn.functional.pad(hidden_states, pad_values) + return hidden_states, pad_values + + def forward( + self, + hidden_states: torch.Tensor, + input_dimensions: Tuple[int, int], + head_mask: Optional[torch.FloatTensor] = None, + output_attentions: Optional[bool] = False, + always_partition: Optional[bool] = False, + ) -> Tuple[torch.Tensor, torch.Tensor]: + if not always_partition: + self.set_shift_and_window_size(input_dimensions) + else: + pass + height, width = input_dimensions + batch_size, _, channels = hidden_states.size() + shortcut = hidden_states + + hidden_states = self.layernorm_before(hidden_states) + + hidden_states = hidden_states.view(batch_size, height, width, channels) + + # pad hidden_states to multiples of window size + hidden_states, pad_values = self.maybe_pad(hidden_states, height, width) + + _, height_pad, width_pad, _ = hidden_states.shape + # cyclic shift + if self.shift_size > 0: + shifted_hidden_states = torch.roll(hidden_states, shifts=(-self.shift_size, -self.shift_size), dims=(1, 2)) + else: + shifted_hidden_states = hidden_states + + # partition windows + hidden_states_windows = window_partition(shifted_hidden_states, self.window_size) + hidden_states_windows = hidden_states_windows.view(-1, self.window_size * self.window_size, channels) + attn_mask = self.get_attn_mask(height_pad, width_pad, dtype=hidden_states.dtype) + if attn_mask is not None: + attn_mask = attn_mask.to(hidden_states_windows.device) + + attention_outputs = self.attention( + hidden_states_windows, attn_mask, head_mask, output_attentions=output_attentions + ) + + attention_output = attention_outputs[0] + + attention_windows = attention_output.view(-1, self.window_size, self.window_size, channels) + shifted_windows = window_reverse(attention_windows, self.window_size, height_pad, width_pad) + + # reverse cyclic shift + if self.shift_size > 0: + attention_windows = torch.roll(shifted_windows, shifts=(self.shift_size, self.shift_size), dims=(1, 2)) + else: + attention_windows = shifted_windows + + was_padded = pad_values[3] > 0 or pad_values[5] > 0 + if was_padded: + attention_windows = attention_windows[:, :height, :width, :].contiguous() + + attention_windows = attention_windows.view(batch_size, height * width, channels) + + hidden_states = shortcut + self.drop_path(attention_windows) + + layer_output = self.layernorm_after(hidden_states) + layer_output = self.intermediate(layer_output) + layer_output = hidden_states + self.output(layer_output) + + layer_outputs = (layer_output, attention_outputs[1]) if output_attentions else (layer_output,) + return layer_outputs + + +# Copied from transformers.models.swin.modeling_swin.SwinStage with Swin->ClapAudio +class ClapAudioStage(nn.Module): + def __init__(self, config, dim, input_resolution, depth, num_heads, drop_path, downsample): + super().__init__() + self.config = config + self.dim = dim + self.blocks = nn.ModuleList( + [ + ClapAudioLayer( + config=config, + dim=dim, + input_resolution=input_resolution, + num_heads=num_heads, + shift_size=0 if (i % 2 == 0) else config.window_size // 2, + ) + for i in range(depth) + ] + ) + + # patch merging layer + if downsample is not None: + self.downsample = downsample(input_resolution, dim=dim, norm_layer=nn.LayerNorm) + else: + self.downsample = None + + self.pointing = False + + def forward( + self, + hidden_states: torch.Tensor, + input_dimensions: Tuple[int, int], + head_mask: Optional[torch.FloatTensor] = None, + output_attentions: Optional[bool] = False, + always_partition: Optional[bool] = False, + ) -> Tuple[torch.Tensor]: + height, width = input_dimensions + for i, layer_module in enumerate(self.blocks): + layer_head_mask = head_mask[i] if head_mask is not None else None + + layer_outputs = layer_module( + hidden_states, input_dimensions, layer_head_mask, output_attentions, always_partition + ) + + hidden_states = layer_outputs[0] + + hidden_states_before_downsampling = hidden_states + if self.downsample is not None: + height_downsampled, width_downsampled = (height + 1) // 2, (width + 1) // 2 + output_dimensions = (height, width, height_downsampled, width_downsampled) + hidden_states = self.downsample(hidden_states_before_downsampling, input_dimensions) + else: + output_dimensions = (height, width, height, width) + + stage_outputs = (hidden_states, hidden_states_before_downsampling, output_dimensions) + + if output_attentions: + stage_outputs += layer_outputs[1:] + return stage_outputs + + +# Copied from transformers.models.swin.modeling_swin.SwinPatchMerging with Swin->ClapAudio +class ClapAudioPatchMerging(nn.Module): + """ + Patch Merging Layer. + + Args: + input_resolution (`Tuple[int]`): + Resolution of input feature. + dim (`int`): + Number of input channels. + norm_layer (`nn.Module`, *optional*, defaults to `nn.LayerNorm`): + Normalization layer class. + """ + + def __init__(self, input_resolution: Tuple[int], dim: int, norm_layer: nn.Module = nn.LayerNorm) -> None: + super().__init__() + self.input_resolution = input_resolution + self.dim = dim + self.reduction = nn.Linear(4 * dim, 2 * dim, bias=False) + self.norm = norm_layer(4 * dim) + + def maybe_pad(self, input_feature, height, width): + should_pad = (height % 2 == 1) or (width % 2 == 1) + if should_pad: + pad_values = (0, 0, 0, width % 2, 0, height % 2) + input_feature = nn.functional.pad(input_feature, pad_values) + + return input_feature + + def forward(self, input_feature: torch.Tensor, input_dimensions: Tuple[int, int]) -> torch.Tensor: + height, width = input_dimensions + # `dim` is height * width + batch_size, dim, num_channels = input_feature.shape + + input_feature = input_feature.view(batch_size, height, width, num_channels) + # pad input to be disible by width and height, if needed + input_feature = self.maybe_pad(input_feature, height, width) + # [batch_size, height/2, width/2, num_channels] + input_feature_0 = input_feature[:, 0::2, 0::2, :] + # [batch_size, height/2, width/2, num_channels] + input_feature_1 = input_feature[:, 1::2, 0::2, :] + # [batch_size, height/2, width/2, num_channels] + input_feature_2 = input_feature[:, 0::2, 1::2, :] + # [batch_size, height/2, width/2, num_channels] + input_feature_3 = input_feature[:, 1::2, 1::2, :] + # batch_size height/2 width/2 4*num_channels + input_feature = torch.cat([input_feature_0, input_feature_1, input_feature_2, input_feature_3], -1) + input_feature = input_feature.view(batch_size, -1, 4 * num_channels) # batch_size height/2*width/2 4*C + + input_feature = self.norm(input_feature) + input_feature = self.reduction(input_feature) + + return input_feature + + +class ClapAudioEncoder(nn.Module): + def __init__(self, config): + super().__init__() + self.num_layers = len(config.depths) + + self.config = config + self.patch_embed = ClapAudioPatchEmbed(config) + self.enable_fusion = config.enable_fusion + self.patch_stride = self.patch_embed.patch_stride + self.spec_size = config.spec_size + self.freq_ratio = config.spec_size // config.num_mel_bins + + self.num_features = int(config.patch_embeds_hidden_size * 2 ** (self.num_layers - 1)) + + drop_path_rate = [x.item() for x in torch.linspace(0, config.drop_path_rate, sum(config.depths))] + + grid_size = self.patch_embed.grid_size + self.input_resolutions = [(grid_size[0] // (2**i), grid_size[1] // (2**i)) for i in range(self.num_layers)] + + self.layers = nn.ModuleList( + [ + ClapAudioStage( + config=config, + dim=int(config.patch_embeds_hidden_size * 2**i_layer), + input_resolution=self.input_resolutions[i_layer], + depth=config.depths[i_layer], + num_heads=config.num_attention_heads[i_layer], + drop_path=drop_path_rate[sum(config.depths[:i_layer]) : sum(config.depths[: i_layer + 1])], + downsample=ClapAudioPatchMerging if (i_layer < self.num_layers - 1) else None, + ) + for i_layer in range(self.num_layers) + ] + ) + + self.gradient_checkpointing = False + + self.batch_norm = nn.BatchNorm2d(config.num_mel_bins) + self.norm = nn.LayerNorm(self.num_features) + self.depths = config.depths + self.avgpool = nn.AdaptiveAvgPool1d(1) + + def reshape_mel2img(self, normalized_input_features): + """ + The input is 4 normalized log mel spectrograms. It is reshape to the common shape of images. Each channel + should represent 1 of the 4 crops of the spectrogram. For more details, refer to the [`ClapFeatureExtractor`]. + """ + _, _, time_length, freq_length = normalized_input_features.shape + + spec_width = int(self.spec_size * self.freq_ratio) + spec_heigth = self.spec_size // self.freq_ratio + + if time_length > spec_width or freq_length > spec_heigth: + raise ValueError("the wav size should be less than or equal to the swin input size") + + # to avoid bicubic zero error + if time_length < spec_width: + normalized_input_features = nn.functional.interpolate( + normalized_input_features, (spec_width, freq_length), mode="bicubic", align_corners=True + ) + if freq_length < spec_heigth: + normalized_input_features = nn.functional.interpolate( + normalized_input_features, (time_length, spec_heigth), mode="bicubic", align_corners=True + ) + + batch, channels, time, freq = normalized_input_features.shape + + # batch_size, channels, spec_width, spec_heigth --> batch_size, channels, spec_heigth * freq_ratio, spec_width // freq_ratio + normalized_input_features = normalized_input_features.reshape( + batch, channels * self.freq_ratio, time // self.freq_ratio, freq + ) + normalized_input_features = normalized_input_features.permute(0, 1, 3, 2).contiguous() + normalized_input_features = normalized_input_features.reshape( + batch, channels, freq * self.freq_ratio, time // self.freq_ratio + ) + + return normalized_input_features + + def forward( + self, + input_features, + is_longer: Optional[torch.FloatTensor] = None, + head_mask: Optional[torch.FloatTensor] = None, + output_attentions: Optional[bool] = False, + output_hidden_states: Optional[bool] = False, + output_hidden_states_before_downsampling: Optional[bool] = False, + always_partition: Optional[bool] = False, + return_dict: Optional[bool] = True, + ) -> Union[Tuple, ClapAudioModelOutput]: + input_features = input_features.transpose(1, 3) + normalized_input_features = self.batch_norm(input_features) + normalized_input_features = normalized_input_features.transpose(1, 3) + + is_longer_list_idx = None + if self.enable_fusion: + is_longer_list = is_longer.to(input_features.device) + is_longer_list_idx = torch.where(is_longer_list == 1)[0] + + hidden_states = self.reshape_mel2img(normalized_input_features) + + frames_num = hidden_states.shape[2] + + hidden_states = self.patch_embed(hidden_states, is_longer_list_idx) + + all_hidden_states = () if output_hidden_states else None + all_reshaped_hidden_states = () if output_hidden_states else None + all_self_attentions = () if output_attentions else None + + input_dimensions = self.input_resolutions[0] + + if output_hidden_states: + batch_size, _, hidden_size = hidden_states.shape + # rearrange batch_size (height width) channels -> batch_size channel height width + reshaped_hidden_state = hidden_states.view(batch_size, *input_dimensions, hidden_size) + reshaped_hidden_state = reshaped_hidden_state.permute(0, 3, 1, 2) + all_hidden_states += (hidden_states,) + all_reshaped_hidden_states += (reshaped_hidden_state,) + + for i, layer_module in enumerate(self.layers): + layer_head_mask = head_mask[i] if head_mask is not None else None + + input_dimensions = self.input_resolutions[i] + + if self.gradient_checkpointing and self.training: + layer_outputs = self._gradient_checkpointing_func( + layer_module.__call__, hidden_states, input_dimensions, layer_head_mask, output_attentions + ) + else: + layer_outputs = layer_module( + hidden_states, input_dimensions, layer_head_mask, output_attentions, always_partition + ) + + hidden_states = layer_outputs[0] + + hidden_states_before_downsampling = layer_outputs[1] + output_dimensions = layer_outputs[2] + + input_dimensions = (output_dimensions[-2], output_dimensions[-1]) + + if output_hidden_states and output_hidden_states_before_downsampling: + batch_size, _, hidden_size = hidden_states_before_downsampling.shape + # rearrange batch_size (height width) channels -> batch_size channel height width + # here we use the original (not downsampled) height and width + reshaped_hidden_state = hidden_states_before_downsampling.view( + batch_size, *(output_dimensions[0], output_dimensions[1]), hidden_size + ) + reshaped_hidden_state = reshaped_hidden_state.permute(0, 3, 1, 2) + all_hidden_states += (hidden_states_before_downsampling,) + all_reshaped_hidden_states += (reshaped_hidden_state,) + elif output_hidden_states and not output_hidden_states_before_downsampling: + batch_size, _, hidden_size = hidden_states.shape + # rearrange batch_size (height width) channels -> batch_size channel height width + reshaped_hidden_state = hidden_states.view(batch_size, *input_dimensions, hidden_size) + reshaped_hidden_state = reshaped_hidden_state.permute(0, 3, 1, 2) + all_hidden_states += (hidden_states,) + all_reshaped_hidden_states += (reshaped_hidden_state,) + + if output_attentions: + all_self_attentions += layer_outputs[3:] + + last_hidden_state = self.norm(hidden_states) + + batch_size, _, n_channels = last_hidden_state.shape + + freq_shape = frames_num // (2 ** (len(self.depths) - 1)) // self.patch_stride[0] + temporal_shape = frames_num // (2 ** (len(self.depths) - 1)) // self.patch_stride[1] + + last_hidden_state = ( + last_hidden_state.permute(0, 2, 1).contiguous().reshape(batch_size, n_channels, freq_shape, temporal_shape) + ) + + batch_size, n_channels, n_frequencies, n_temp = last_hidden_state.shape + # group 2D CNN + c_freq_bin = n_frequencies // self.freq_ratio + last_hidden_state = last_hidden_state.reshape( + batch_size, n_channels, n_frequencies // c_freq_bin, c_freq_bin, n_temp + ) + last_hidden_state = ( + last_hidden_state.permute(0, 1, 3, 2, 4).contiguous().reshape(batch_size, n_channels, c_freq_bin, -1) + ) + latent_output = self.avgpool(torch.flatten(last_hidden_state, 2)) + latent_output = torch.flatten(latent_output, 1) + + if not return_dict: + return tuple( + v + for v in [ + last_hidden_state, + latent_output, + all_reshaped_hidden_states, + all_self_attentions, + ] + if v is not None + ) + + return BaseModelOutputWithPooling( + last_hidden_state=last_hidden_state, + pooler_output=latent_output, + hidden_states=all_reshaped_hidden_states, + attentions=all_self_attentions, + ) + + +CLAP_START_DOCSTRING = r""" + This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the + library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads + etc.) + + This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. + Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage + and behavior. + + Parameters: + config ([`ClapConfig`]): Model configuration class with all the parameters of the model. + Initializing with a config file does not load the weights associated with the model, only the + configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights. +""" + +CLAP_TEXT_INPUTS_DOCSTRING = r""" + Args: + input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): + Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide + it. + + Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and + [`PreTrainedTokenizer.__call__`] for details. + + [What are input IDs?](../glossary#input-ids) + attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): + Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: + + - 1 for tokens that are **not masked**, + - 0 for tokens that are **masked**. + + [What are attention masks?](../glossary#attention-mask) + position_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): + Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, + config.max_position_embeddings - 1]`. + + [What are position IDs?](../glossary#position-ids) + output_attentions (`bool`, *optional*): + Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned + tensors for more detail. + output_hidden_states (`bool`, *optional*): + Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for + more detail. + return_dict (`bool`, *optional*): + Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. +""" + +CLAP_AUDIO_INPUTS_DOCSTRING = r""" + Args: + input_features (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`): + Input audio features. This should be returnes by the [`ClapFeatureExtractor`] class that you can also + retrieve from [`AutoFeatureExtractor`]. See [`ClapFeatureExtractor.__call__`] for details. + is_longer (`torch.FloatTensor`, of shape `(batch_size, 1)`, *optional*): + Whether the audio clip is longer than `max_length`. If `True`, a feature fusion will be enabled to enhance + the features. + output_attentions (`bool`, *optional*): + Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned + tensors for more detail. + output_hidden_states (`bool`, *optional*): + Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for + more detail. + return_dict (`bool`, *optional*): + Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. +""" + +CLAP_INPUTS_DOCSTRING = r""" + Args: + input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`): + Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide + it. + + Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and + [`PreTrainedTokenizer.__call__`] for details. + + [What are input IDs?](../glossary#input-ids) + attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*): + Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`: + + - 1 for tokens that are **not masked**, + - 0 for tokens that are **masked**. + + [What are attention masks?](../glossary#attention-mask) + position_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*): + Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0, + config.max_position_embeddings - 1]`. + + [What are position IDs?](../glossary#position-ids) + input_features (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`): + Input audio features. This should be returnes by the [`ClapFeatureExtractor`] class that you can also + retrieve from [`AutoFeatureExtractor`]. See [`ClapFeatureExtractor.__call__`] for details. + return_loss (`bool`, *optional*): + Whether or not to return the contrastive loss. + output_attentions (`bool`, *optional*): + Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned + tensors for more detail. + output_hidden_states (`bool`, *optional*): + Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for + more detail. + return_dict (`bool`, *optional*): + Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. +""" + + +class ClapProjectionLayer(nn.Module): + def __init__(self, config: Union[ClapAudioConfig, ClapTextConfig]): + super().__init__() + self.config = config + hidden_size = config.hidden_size + projection_dim = config.projection_dim + + self.linear1 = nn.Linear(hidden_size, projection_dim) + self.activation = ACT2FN[config.projection_hidden_act] + self.linear2 = nn.Linear(projection_dim, projection_dim) + + def forward(self, hidden_states): + hidden_states = self.linear1(hidden_states) + hidden_states = self.activation(hidden_states) + hidden_states = self.linear2(hidden_states) + return hidden_states + + +# Copied from transformers.models.roberta.modeling_roberta.RobertaEmbeddings with Roberta->ClapText, persistent=False->persistent=True +class ClapTextEmbeddings(nn.Module): + """ + Same as BertEmbeddings with a tiny tweak for positional embeddings indexing. + """ + + # Copied from transformers.models.bert.modeling_bert.BertEmbeddings.__init__ + def __init__(self, config): + super().__init__() + self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, padding_idx=config.pad_token_id) + self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size) + self.token_type_embeddings = nn.Embedding(config.type_vocab_size, config.hidden_size) + + # self.LayerNorm is not snake-cased to stick with TensorFlow model variable name and be able to load + # any TensorFlow checkpoint file + self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) + self.dropout = nn.Dropout(config.hidden_dropout_prob) + # position_ids (1, len position emb) is contiguous in memory and exported when serialized + self.position_embedding_type = getattr(config, "position_embedding_type", "absolute") + self.register_buffer( + "position_ids", torch.arange(config.max_position_embeddings).expand((1, -1)), persistent=True + ) + self.register_buffer( + "token_type_ids", torch.zeros(self.position_ids.size(), dtype=torch.long), persistent=True + ) + + # End copy + self.padding_idx = config.pad_token_id + self.position_embeddings = nn.Embedding( + config.max_position_embeddings, config.hidden_size, padding_idx=self.padding_idx + ) + + def forward( + self, input_ids=None, token_type_ids=None, position_ids=None, inputs_embeds=None, past_key_values_length=0 + ): + if position_ids is None: + if input_ids is not None: + # Create the position ids from the input token ids. Any padded tokens remain padded. + position_ids = create_position_ids_from_input_ids(input_ids, self.padding_idx, past_key_values_length) + else: + position_ids = self.create_position_ids_from_inputs_embeds(inputs_embeds) + + if input_ids is not None: + input_shape = input_ids.size() + else: + input_shape = inputs_embeds.size()[:-1] + + seq_length = input_shape[1] + + # Setting the token_type_ids to the registered buffer in constructor where it is all zeros, which usually occurs + # when its auto-generated, registered buffer helps users when tracing the model without passing token_type_ids, solves + # issue #5664 + if token_type_ids is None: + if hasattr(self, "token_type_ids"): + buffered_token_type_ids = self.token_type_ids[:, :seq_length] + buffered_token_type_ids_expanded = buffered_token_type_ids.expand(input_shape[0], seq_length) + token_type_ids = buffered_token_type_ids_expanded + else: + token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=self.position_ids.device) + + if inputs_embeds is None: + inputs_embeds = self.word_embeddings(input_ids) + token_type_embeddings = self.token_type_embeddings(token_type_ids) + + embeddings = inputs_embeds + token_type_embeddings + if self.position_embedding_type == "absolute": + position_embeddings = self.position_embeddings(position_ids) + embeddings += position_embeddings + embeddings = self.LayerNorm(embeddings) + embeddings = self.dropout(embeddings) + return embeddings + + def create_position_ids_from_inputs_embeds(self, inputs_embeds): + """ + We are provided embeddings directly. We cannot infer which are padded so just generate sequential position ids. + + Args: + inputs_embeds: torch.Tensor + + Returns: torch.Tensor + """ + input_shape = inputs_embeds.size()[:-1] + sequence_length = input_shape[1] + + position_ids = torch.arange( + self.padding_idx + 1, sequence_length + self.padding_idx + 1, dtype=torch.long, device=inputs_embeds.device + ) + return position_ids.unsqueeze(0).expand(input_shape) + + +# Copied from transformers.models.bert.modeling_bert.BertSelfAttention with Bert->ClapText +class ClapTextSelfAttention(nn.Module): + def __init__(self, config, position_embedding_type=None): + super().__init__() + if config.hidden_size % config.num_attention_heads != 0 and not hasattr(config, "embedding_size"): + raise ValueError( + f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention " + f"heads ({config.num_attention_heads})" + ) + + self.num_attention_heads = config.num_attention_heads + self.attention_head_size = int(config.hidden_size / config.num_attention_heads) + self.all_head_size = self.num_attention_heads * self.attention_head_size + + self.query = nn.Linear(config.hidden_size, self.all_head_size) + self.key = nn.Linear(config.hidden_size, self.all_head_size) + self.value = nn.Linear(config.hidden_size, self.all_head_size) + + self.dropout = nn.Dropout(config.attention_probs_dropout_prob) + self.position_embedding_type = position_embedding_type or getattr( + config, "position_embedding_type", "absolute" + ) + if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query": + self.max_position_embeddings = config.max_position_embeddings + self.distance_embedding = nn.Embedding(2 * config.max_position_embeddings - 1, self.attention_head_size) + + self.is_decoder = config.is_decoder + + def transpose_for_scores(self, x: torch.Tensor) -> torch.Tensor: + new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size) + x = x.view(new_x_shape) + return x.permute(0, 2, 1, 3) + + def forward( + self, + hidden_states: torch.Tensor, + attention_mask: Optional[torch.FloatTensor] = None, + head_mask: Optional[torch.FloatTensor] = None, + encoder_hidden_states: Optional[torch.FloatTensor] = None, + encoder_attention_mask: Optional[torch.FloatTensor] = None, + past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, + output_attentions: Optional[bool] = False, + ) -> Tuple[torch.Tensor]: + mixed_query_layer = self.query(hidden_states) + + # If this is instantiated as a cross-attention module, the keys + # and values come from an encoder; the attention mask needs to be + # such that the encoder's padding tokens are not attended to. + is_cross_attention = encoder_hidden_states is not None + + if is_cross_attention and past_key_value is not None: + # reuse k,v, cross_attentions + key_layer = past_key_value[0] + value_layer = past_key_value[1] + attention_mask = encoder_attention_mask + elif is_cross_attention: + key_layer = self.transpose_for_scores(self.key(encoder_hidden_states)) + value_layer = self.transpose_for_scores(self.value(encoder_hidden_states)) + attention_mask = encoder_attention_mask + elif past_key_value is not None: + key_layer = self.transpose_for_scores(self.key(hidden_states)) + value_layer = self.transpose_for_scores(self.value(hidden_states)) + key_layer = torch.cat([past_key_value[0], key_layer], dim=2) + value_layer = torch.cat([past_key_value[1], value_layer], dim=2) + else: + key_layer = self.transpose_for_scores(self.key(hidden_states)) + value_layer = self.transpose_for_scores(self.value(hidden_states)) + + query_layer = self.transpose_for_scores(mixed_query_layer) + + use_cache = past_key_value is not None + if self.is_decoder: + # if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states. + # Further calls to cross_attention layer can then reuse all cross-attention + # key/value_states (first "if" case) + # if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of + # all previous decoder key/value_states. Further calls to uni-directional self-attention + # can concat previous decoder key/value_states to current projected key/value_states (third "elif" case) + # if encoder bi-directional self-attention `past_key_value` is always `None` + past_key_value = (key_layer, value_layer) + + # Take the dot product between "query" and "key" to get the raw attention scores. + attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2)) + + if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query": + query_length, key_length = query_layer.shape[2], key_layer.shape[2] + if use_cache: + position_ids_l = torch.tensor(key_length - 1, dtype=torch.long, device=hidden_states.device).view( + -1, 1 + ) + else: + position_ids_l = torch.arange(query_length, dtype=torch.long, device=hidden_states.device).view(-1, 1) + position_ids_r = torch.arange(key_length, dtype=torch.long, device=hidden_states.device).view(1, -1) + distance = position_ids_l - position_ids_r + + positional_embedding = self.distance_embedding(distance + self.max_position_embeddings - 1) + positional_embedding = positional_embedding.to(dtype=query_layer.dtype) # fp16 compatibility + + if self.position_embedding_type == "relative_key": + relative_position_scores = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding) + attention_scores = attention_scores + relative_position_scores + elif self.position_embedding_type == "relative_key_query": + relative_position_scores_query = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding) + relative_position_scores_key = torch.einsum("bhrd,lrd->bhlr", key_layer, positional_embedding) + attention_scores = attention_scores + relative_position_scores_query + relative_position_scores_key + + attention_scores = attention_scores / math.sqrt(self.attention_head_size) + if attention_mask is not None: + # Apply the attention mask is (precomputed for all layers in ClapTextModel forward() function) + attention_scores = attention_scores + attention_mask + + # Normalize the attention scores to probabilities. + attention_probs = nn.functional.softmax(attention_scores, dim=-1) + + # This is actually dropping out entire tokens to attend to, which might + # seem a bit unusual, but is taken from the original Transformer paper. + attention_probs = self.dropout(attention_probs) + + # Mask heads if we want to + if head_mask is not None: + attention_probs = attention_probs * head_mask + + context_layer = torch.matmul(attention_probs, value_layer) + + context_layer = context_layer.permute(0, 2, 1, 3).contiguous() + new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,) + context_layer = context_layer.view(new_context_layer_shape) + + outputs = (context_layer, attention_probs) if output_attentions else (context_layer,) + + if self.is_decoder: + outputs = outputs + (past_key_value,) + return outputs + + +# Copied from transformers.models.bert.modeling_bert.BertSelfOutput +class ClapTextSelfOutput(nn.Module): + def __init__(self, config): + super().__init__() + self.dense = nn.Linear(config.hidden_size, config.hidden_size) + self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) + self.dropout = nn.Dropout(config.hidden_dropout_prob) + + def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: + hidden_states = self.dense(hidden_states) + hidden_states = self.dropout(hidden_states) + hidden_states = self.LayerNorm(hidden_states + input_tensor) + return hidden_states + + +# Copied from transformers.models.bert.modeling_bert.BertAttention with Bert->ClapText +class ClapTextAttention(nn.Module): + def __init__(self, config, position_embedding_type=None): + super().__init__() + self.self = ClapTextSelfAttention(config, position_embedding_type=position_embedding_type) + self.output = ClapTextSelfOutput(config) + self.pruned_heads = set() + + def prune_heads(self, heads): + if len(heads) == 0: + return + heads, index = find_pruneable_heads_and_indices( + heads, self.self.num_attention_heads, self.self.attention_head_size, self.pruned_heads + ) + + # Prune linear layers + self.self.query = prune_linear_layer(self.self.query, index) + self.self.key = prune_linear_layer(self.self.key, index) + self.self.value = prune_linear_layer(self.self.value, index) + self.output.dense = prune_linear_layer(self.output.dense, index, dim=1) + + # Update hyper params and store pruned heads + self.self.num_attention_heads = self.self.num_attention_heads - len(heads) + self.self.all_head_size = self.self.attention_head_size * self.self.num_attention_heads + self.pruned_heads = self.pruned_heads.union(heads) + + def forward( + self, + hidden_states: torch.Tensor, + attention_mask: Optional[torch.FloatTensor] = None, + head_mask: Optional[torch.FloatTensor] = None, + encoder_hidden_states: Optional[torch.FloatTensor] = None, + encoder_attention_mask: Optional[torch.FloatTensor] = None, + past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, + output_attentions: Optional[bool] = False, + ) -> Tuple[torch.Tensor]: + self_outputs = self.self( + hidden_states, + attention_mask, + head_mask, + encoder_hidden_states, + encoder_attention_mask, + past_key_value, + output_attentions, + ) + attention_output = self.output(self_outputs[0], hidden_states) + outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them + return outputs + + +# Copied from transformers.models.bert.modeling_bert.BertIntermediate +class ClapTextIntermediate(nn.Module): + def __init__(self, config): + super().__init__() + self.dense = nn.Linear(config.hidden_size, config.intermediate_size) + if isinstance(config.hidden_act, str): + self.intermediate_act_fn = ACT2FN[config.hidden_act] + else: + self.intermediate_act_fn = config.hidden_act + + def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: + hidden_states = self.dense(hidden_states) + hidden_states = self.intermediate_act_fn(hidden_states) + return hidden_states + + +# Copied from transformers.models.bert.modeling_bert.BertOutput +class ClapTextOutput(nn.Module): + def __init__(self, config): + super().__init__() + self.dense = nn.Linear(config.intermediate_size, config.hidden_size) + self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) + self.dropout = nn.Dropout(config.hidden_dropout_prob) + + def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: + hidden_states = self.dense(hidden_states) + hidden_states = self.dropout(hidden_states) + hidden_states = self.LayerNorm(hidden_states + input_tensor) + return hidden_states + + +# Copied from transformers.models.bert.modeling_bert.BertLayer with Bert->ClapText +class ClapTextLayer(nn.Module): + def __init__(self, config): + super().__init__() + self.chunk_size_feed_forward = config.chunk_size_feed_forward + self.seq_len_dim = 1 + self.attention = ClapTextAttention(config) + self.is_decoder = config.is_decoder + self.add_cross_attention = config.add_cross_attention + if self.add_cross_attention: + if not self.is_decoder: + raise ValueError(f"{self} should be used as a decoder model if cross attention is added") + self.crossattention = ClapTextAttention(config, position_embedding_type="absolute") + self.intermediate = ClapTextIntermediate(config) + self.output = ClapTextOutput(config) + + def forward( + self, + hidden_states: torch.Tensor, + attention_mask: Optional[torch.FloatTensor] = None, + head_mask: Optional[torch.FloatTensor] = None, + encoder_hidden_states: Optional[torch.FloatTensor] = None, + encoder_attention_mask: Optional[torch.FloatTensor] = None, + past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, + output_attentions: Optional[bool] = False, + ) -> Tuple[torch.Tensor]: + # decoder uni-directional self-attention cached key/values tuple is at positions 1,2 + self_attn_past_key_value = past_key_value[:2] if past_key_value is not None else None + self_attention_outputs = self.attention( + hidden_states, + attention_mask, + head_mask, + output_attentions=output_attentions, + past_key_value=self_attn_past_key_value, + ) + attention_output = self_attention_outputs[0] + + # if decoder, the last output is tuple of self-attn cache + if self.is_decoder: + outputs = self_attention_outputs[1:-1] + present_key_value = self_attention_outputs[-1] + else: + outputs = self_attention_outputs[1:] # add self attentions if we output attention weights + + cross_attn_present_key_value = None + if self.is_decoder and encoder_hidden_states is not None: + if not hasattr(self, "crossattention"): + raise ValueError( + f"If `encoder_hidden_states` are passed, {self} has to be instantiated with cross-attention layers" + " by setting `config.add_cross_attention=True`" + ) + + # cross_attn cached key/values tuple is at positions 3,4 of past_key_value tuple + cross_attn_past_key_value = past_key_value[-2:] if past_key_value is not None else None + cross_attention_outputs = self.crossattention( + attention_output, + attention_mask, + head_mask, + encoder_hidden_states, + encoder_attention_mask, + cross_attn_past_key_value, + output_attentions, + ) + attention_output = cross_attention_outputs[0] + outputs = outputs + cross_attention_outputs[1:-1] # add cross attentions if we output attention weights + + # add cross-attn cache to positions 3,4 of present_key_value tuple + cross_attn_present_key_value = cross_attention_outputs[-1] + present_key_value = present_key_value + cross_attn_present_key_value + + layer_output = apply_chunking_to_forward( + self.feed_forward_chunk, self.chunk_size_feed_forward, self.seq_len_dim, attention_output + ) + outputs = (layer_output,) + outputs + + # if decoder, return the attn key/values as the last output + if self.is_decoder: + outputs = outputs + (present_key_value,) + + return outputs + + def feed_forward_chunk(self, attention_output): + intermediate_output = self.intermediate(attention_output) + layer_output = self.output(intermediate_output, attention_output) + return layer_output + + +# Copied from transformers.models.bert.modeling_bert.BertEncoder with Bert->ClapText +class ClapTextEncoder(nn.Module): + def __init__(self, config): + super().__init__() + self.config = config + self.layer = nn.ModuleList([ClapTextLayer(config) for _ in range(config.num_hidden_layers)]) + self.gradient_checkpointing = False + + def forward( + self, + hidden_states: torch.Tensor, + attention_mask: Optional[torch.FloatTensor] = None, + head_mask: Optional[torch.FloatTensor] = None, + encoder_hidden_states: Optional[torch.FloatTensor] = None, + encoder_attention_mask: Optional[torch.FloatTensor] = None, + past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None, + use_cache: Optional[bool] = None, + output_attentions: Optional[bool] = False, + output_hidden_states: Optional[bool] = False, + return_dict: Optional[bool] = True, + ) -> Union[Tuple[torch.Tensor], BaseModelOutputWithPastAndCrossAttentions]: + all_hidden_states = () if output_hidden_states else None + all_self_attentions = () if output_attentions else None + all_cross_attentions = () if output_attentions and self.config.add_cross_attention else None + + if self.gradient_checkpointing and self.training: + if use_cache: + logger.warning_once( + "`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..." + ) + use_cache = False + + next_decoder_cache = () if use_cache else None + for i, layer_module in enumerate(self.layer): + if output_hidden_states: + all_hidden_states = all_hidden_states + (hidden_states,) + + layer_head_mask = head_mask[i] if head_mask is not None else None + past_key_value = past_key_values[i] if past_key_values is not None else None + + if self.gradient_checkpointing and self.training: + layer_outputs = self._gradient_checkpointing_func( + layer_module.__call__, + hidden_states, + attention_mask, + layer_head_mask, + encoder_hidden_states, + encoder_attention_mask, + past_key_value, + output_attentions, + ) + else: + layer_outputs = layer_module( + hidden_states, + attention_mask, + layer_head_mask, + encoder_hidden_states, + encoder_attention_mask, + past_key_value, + output_attentions, + ) + + hidden_states = layer_outputs[0] + if use_cache: + next_decoder_cache += (layer_outputs[-1],) + if output_attentions: + all_self_attentions = all_self_attentions + (layer_outputs[1],) + if self.config.add_cross_attention: + all_cross_attentions = all_cross_attentions + (layer_outputs[2],) + + if output_hidden_states: + all_hidden_states = all_hidden_states + (hidden_states,) + + if not return_dict: + return tuple( + v + for v in [ + hidden_states, + next_decoder_cache, + all_hidden_states, + all_self_attentions, + all_cross_attentions, + ] + if v is not None + ) + return BaseModelOutputWithPastAndCrossAttentions( + last_hidden_state=hidden_states, + past_key_values=next_decoder_cache, + hidden_states=all_hidden_states, + attentions=all_self_attentions, + cross_attentions=all_cross_attentions, + ) + + +# Copied from transformers.models.bert.modeling_bert.BertPooler +class ClapTextPooler(nn.Module): + def __init__(self, config): + super().__init__() + self.dense = nn.Linear(config.hidden_size, config.hidden_size) + self.activation = nn.Tanh() + + def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: + # We "pool" the model by simply taking the hidden state corresponding + # to the first token. + first_token_tensor = hidden_states[:, 0] + pooled_output = self.dense(first_token_tensor) + pooled_output = self.activation(pooled_output) + return pooled_output + + +class ClapPreTrainedModel(PreTrainedModel): + """ + An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained + models. + """ + + config_class = ClapConfig + base_model_prefix = "clap" + supports_gradient_checkpointing = False + + def _init_weights(self, module): + """Initialize the weights""" + factor = self.config.initializer_factor + + if isinstance(module, ClapTextEmbeddings): + module.position_embeddings.weight.data.normal_(mean=0.0, std=factor * 0.02) + module.token_type_embeddings.weight.data.normal_(mean=0.0, std=factor * 0.02) + elif isinstance(module, ClapModel): + nn.init.normal_(module.logit_scale_a, std=factor * 0.02) + nn.init.normal_(module.logit_scale_t, std=factor * 0.02) + elif isinstance(module, nn.Embedding): + module.weight.data.normal_(mean=0.0, std=factor * 0.02) + + elif isinstance(module, nn.LayerNorm): + module.bias.data.zero_() + module.weight.data.fill_(1.0) + elif isinstance(module, (nn.Conv2d, nn.Linear)): + in_proj_std = (self.config.hidden_size**-0.5) * ((2 * self.config.num_hidden_layers) ** -0.5) * factor + nn.init.normal_(module.weight, std=in_proj_std) + if module.bias is not None: + module.bias.data.zero_() + + +class ClapAudioModel(ClapPreTrainedModel): + config_class = ClapAudioConfig + main_input_name = "input_features" + + def __init__(self, config: ClapAudioConfig): + super().__init__(config) + self.audio_encoder = ClapAudioEncoder(config) + # Initialize weights and apply final processing + self.post_init() + + def get_input_embeddings(self) -> nn.Module: + return self.audio_encoder.patch_embed.proj + + @add_start_docstrings_to_model_forward(CLAP_AUDIO_INPUTS_DOCSTRING) + @replace_return_docstrings(output_type=BaseModelOutputWithPooling, config_class=ClapAudioConfig) + def forward( + self, + input_features: Optional[torch.FloatTensor] = None, + is_longer: Optional[torch.BoolTensor] = None, + output_attentions: Optional[bool] = None, + output_hidden_states: Optional[bool] = None, + return_dict: Optional[bool] = None, + ) -> Union[Tuple, BaseModelOutputWithPooling]: + r""" + Returns: + + Examples: + + ```python + >>> from datasets import load_dataset + >>> from transformers import AutoProcessor, ClapAudioModel + + >>> dataset = load_dataset("hf-internal-testing/ashraq-esc50-1-dog-example") + >>> audio_sample = dataset["train"]["audio"][0]["array"] + + >>> model = ClapAudioModel.from_pretrained("laion/clap-htsat-fused") + >>> processor = AutoProcessor.from_pretrained("laion/clap-htsat-fused") + + >>> inputs = processor(audios=audio_sample, return_tensors="pt") + + >>> outputs = model(**inputs) + >>> last_hidden_state = outputs.last_hidden_state + ```""" + return_dict = return_dict if return_dict is not None else self.config.use_return_dict + output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions + output_hidden_states = ( + output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states + ) + + return self.audio_encoder( + input_features=input_features, + is_longer=is_longer, + output_attentions=output_attentions, + output_hidden_states=output_hidden_states, + return_dict=return_dict, + ) + + +class ClapTextModel(ClapPreTrainedModel): + """ + + The model can behave as an encoder (with only self-attention) as well as a decoder, in which case a layer of + cross-attention is added between the self-attention layers, following the architecture described in *Attention is + all you need*_ by Ashish Vaswani, Noam Shazeer, Niki Parmar, Jakob Uszkoreit, Llion Jones, Aidan N. Gomez, Lukasz + Kaiser and Illia Polosukhin. + + To behave as an decoder the model needs to be initialized with the `is_decoder` argument of the configuration set + to `True`. To be used in a Seq2Seq model, the model needs to initialized with both `is_decoder` argument and + `add_cross_attention` set to `True`; an `encoder_hidden_states` is then expected as an input to the forward pass. + + .. _*Attention is all you need*: https://arxiv.org/abs/1706.03762 + + """ + + config_class = ClapTextConfig + + # Copied from transformers.models.bert.modeling_bert.BertModel.__init__ with Bert->ClapText + def __init__(self, config, add_pooling_layer=True): + super().__init__(config) + self.config = config + + self.embeddings = ClapTextEmbeddings(config) + self.encoder = ClapTextEncoder(config) + + self.pooler = ClapTextPooler(config) if add_pooling_layer else None + + # Initialize weights and apply final processing + self.post_init() + + def get_input_embeddings(self): + return self.embeddings.word_embeddings + + def set_input_embeddings(self, value): + self.embeddings.word_embeddings = value + + # Copied from transformers.models.bert.modeling_bert.BertModel.forward + def forward( + self, + input_ids: Optional[torch.Tensor] = None, + attention_mask: Optional[torch.Tensor] = None, + token_type_ids: Optional[torch.Tensor] = None, + position_ids: Optional[torch.Tensor] = None, + head_mask: Optional[torch.Tensor] = None, + inputs_embeds: Optional[torch.Tensor] = None, + encoder_hidden_states: Optional[torch.Tensor] = None, + encoder_attention_mask: Optional[torch.Tensor] = None, + past_key_values: Optional[List[torch.FloatTensor]] = None, + use_cache: Optional[bool] = None, + output_attentions: Optional[bool] = None, + output_hidden_states: Optional[bool] = None, + return_dict: Optional[bool] = None, + ) -> Union[Tuple[torch.Tensor], BaseModelOutputWithPoolingAndCrossAttentions]: + r""" + encoder_hidden_states (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*): + Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if + the model is configured as a decoder. + encoder_attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*): + Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in + the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`: + + - 1 for tokens that are **not masked**, + - 0 for tokens that are **masked**. + past_key_values (`tuple(tuple(torch.FloatTensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`): + Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding. + + If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that + don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all + `decoder_input_ids` of shape `(batch_size, sequence_length)`. + use_cache (`bool`, *optional*): + If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see + `past_key_values`). + """ + output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions + output_hidden_states = ( + output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states + ) + return_dict = return_dict if return_dict is not None else self.config.use_return_dict + + if self.config.is_decoder: + use_cache = use_cache if use_cache is not None else self.config.use_cache + else: + use_cache = False + + if input_ids is not None and inputs_embeds is not None: + raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time") + elif input_ids is not None: + self.warn_if_padding_and_no_attention_mask(input_ids, attention_mask) + input_shape = input_ids.size() + elif inputs_embeds is not None: + input_shape = inputs_embeds.size()[:-1] + else: + raise ValueError("You have to specify either input_ids or inputs_embeds") + + batch_size, seq_length = input_shape + device = input_ids.device if input_ids is not None else inputs_embeds.device + + # past_key_values_length + past_key_values_length = past_key_values[0][0].shape[2] if past_key_values is not None else 0 + + if attention_mask is None: + attention_mask = torch.ones(((batch_size, seq_length + past_key_values_length)), device=device) + + if token_type_ids is None: + if hasattr(self.embeddings, "token_type_ids"): + buffered_token_type_ids = self.embeddings.token_type_ids[:, :seq_length] + buffered_token_type_ids_expanded = buffered_token_type_ids.expand(batch_size, seq_length) + token_type_ids = buffered_token_type_ids_expanded + else: + token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=device) + + # We can provide a self-attention mask of dimensions [batch_size, from_seq_length, to_seq_length] + # ourselves in which case we just need to make it broadcastable to all heads. + extended_attention_mask: torch.Tensor = self.get_extended_attention_mask(attention_mask, input_shape) + + # If a 2D or 3D attention mask is provided for the cross-attention + # we need to make broadcastable to [batch_size, num_heads, seq_length, seq_length] + if self.config.is_decoder and encoder_hidden_states is not None: + encoder_batch_size, encoder_sequence_length, _ = encoder_hidden_states.size() + encoder_hidden_shape = (encoder_batch_size, encoder_sequence_length) + if encoder_attention_mask is None: + encoder_attention_mask = torch.ones(encoder_hidden_shape, device=device) + encoder_extended_attention_mask = self.invert_attention_mask(encoder_attention_mask) + else: + encoder_extended_attention_mask = None + + # Prepare head mask if needed + # 1.0 in head_mask indicate we keep the head + # attention_probs has shape bsz x n_heads x N x N + # input head_mask has shape [num_heads] or [num_hidden_layers x num_heads] + # and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length] + head_mask = self.get_head_mask(head_mask, self.config.num_hidden_layers) + + embedding_output = self.embeddings( + input_ids=input_ids, + position_ids=position_ids, + token_type_ids=token_type_ids, + inputs_embeds=inputs_embeds, + past_key_values_length=past_key_values_length, + ) + encoder_outputs = self.encoder( + embedding_output, + attention_mask=extended_attention_mask, + head_mask=head_mask, + encoder_hidden_states=encoder_hidden_states, + encoder_attention_mask=encoder_extended_attention_mask, + past_key_values=past_key_values, + use_cache=use_cache, + output_attentions=output_attentions, + output_hidden_states=output_hidden_states, + return_dict=return_dict, + ) + sequence_output = encoder_outputs[0] + pooled_output = self.pooler(sequence_output) if self.pooler is not None else None + + if not return_dict: + return (sequence_output, pooled_output) + encoder_outputs[1:] + + return BaseModelOutputWithPoolingAndCrossAttentions( + last_hidden_state=sequence_output, + pooler_output=pooled_output, + past_key_values=encoder_outputs.past_key_values, + hidden_states=encoder_outputs.hidden_states, + attentions=encoder_outputs.attentions, + cross_attentions=encoder_outputs.cross_attentions, + ) + + +@add_start_docstrings(CLAP_START_DOCSTRING) +class ClapModel(ClapPreTrainedModel): + config_class = ClapConfig + + def __init__(self, config: ClapConfig): + super().__init__(config) + + if not isinstance(config.text_config, ClapTextConfig): + raise ValueError( + "config.text_config is expected to be of type ClapTextConfig but is of type" + f" {type(config.text_config)}." + ) + + if not isinstance(config.audio_config, ClapAudioConfig): + raise ValueError( + "config.audio_config is expected to be of type ClapAudioConfig but is of type" + f" {type(config.audio_config)}." + ) + + text_config = config.text_config + audio_config = config.audio_config + + self.logit_scale_a = nn.Parameter(torch.tensor(math.log(config.logit_scale_init_value))) + self.logit_scale_t = nn.Parameter(torch.tensor(math.log(config.logit_scale_init_value))) + + self.projection_dim = config.projection_dim + + self.text_model = ClapTextModel(text_config) + self.text_projection = ClapProjectionLayer(text_config) + + self.audio_model = ClapAudioModel(audio_config) + self.audio_projection = ClapProjectionLayer(audio_config) + + # Initialize weights and apply final processing + self.post_init() + + @add_start_docstrings_to_model_forward(CLAP_TEXT_INPUTS_DOCSTRING) + def get_text_features( + self, + input_ids: Optional[torch.Tensor] = None, + attention_mask: Optional[torch.Tensor] = None, + position_ids: Optional[torch.Tensor] = None, + output_attentions: Optional[bool] = None, + output_hidden_states: Optional[bool] = None, + return_dict: Optional[bool] = None, + ) -> torch.FloatTensor: + r""" + Returns: + text_features (`torch.FloatTensor` of shape `(batch_size, output_dim`): The text embeddings obtained by + applying the projection layer to the pooled output of [`ClapTextModel`]. + + Examples: + + ```python + >>> from transformers import AutoTokenizer, ClapModel + + >>> model = ClapModel.from_pretrained("laion/clap-htsat-unfused") + >>> tokenizer = AutoTokenizer.from_pretrained("laion/clap-htsat-unfused") + + >>> inputs = tokenizer(["the sound of a cat", "the sound of a dog"], padding=True, return_tensors="pt") + >>> text_features = model.get_text_features(**inputs) + ```""" + # Use CLAP model's config for some fields (if specified) instead of those of audio & text components. + output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions + output_hidden_states = ( + output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states + ) + return_dict = return_dict if return_dict is not None else self.config.use_return_dict + + text_outputs = self.text_model( + input_ids=input_ids, + attention_mask=attention_mask, + position_ids=position_ids, + output_attentions=output_attentions, + output_hidden_states=output_hidden_states, + return_dict=return_dict, + ) + + pooled_output = text_outputs[1] if return_dict is not None else text_outputs.pooler_output + text_features = self.text_projection(pooled_output) + text_features = F.normalize(text_features, dim=-1) + + return text_features + + @add_start_docstrings_to_model_forward(CLAP_AUDIO_INPUTS_DOCSTRING) + def get_audio_features( + self, + input_features: Optional[torch.Tensor] = None, + is_longer: Optional[torch.Tensor] = None, + attention_mask: Optional[torch.Tensor] = None, + output_attentions: Optional[bool] = None, + output_hidden_states: Optional[bool] = None, + return_dict: Optional[bool] = None, + ) -> torch.FloatTensor: + r""" + Returns: + audio_features (`torch.FloatTensor` of shape `(batch_size, output_dim`): The audio embeddings obtained by + applying the projection layer to the pooled output of [`ClapAudioModel`]. + + Examples: + + ```python + >>> from transformers import AutoFeatureExtractor, ClapModel + >>> import torch + + >>> model = ClapModel.from_pretrained("laion/clap-htsat-unfused") + >>> feature_extractor = AutoFeatureExtractor.from_pretrained("laion/clap-htsat-unfused") + >>> random_audio = torch.rand((16_000)) + >>> inputs = feature_extractor(random_audio, return_tensors="pt") + >>> audio_features = model.get_audio_features(**inputs) + ```""" + output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions + output_hidden_states = ( + output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states + ) + return_dict = return_dict if return_dict is not None else self.config.use_return_dict + + audio_outputs = self.audio_model( + input_features=input_features, + is_longer=is_longer, + return_dict=return_dict, + ) + + pooled_output = audio_outputs[1] if not return_dict else audio_outputs.pooler_output + + audio_features = self.audio_projection(pooled_output) + audio_features = F.normalize(audio_features, dim=-1) + + return audio_features + + @add_start_docstrings_to_model_forward(CLAP_INPUTS_DOCSTRING) + @replace_return_docstrings(output_type=ClapOutput, config_class=ClapConfig) + def forward( + self, + input_ids: Optional[torch.LongTensor] = None, + input_features: Optional[torch.FloatTensor] = None, + is_longer: Optional[torch.BoolTensor] = None, + attention_mask: Optional[torch.Tensor] = None, + position_ids: Optional[torch.LongTensor] = None, + return_loss: Optional[bool] = None, + output_attentions: Optional[bool] = None, + output_hidden_states: Optional[bool] = None, + return_dict: Optional[bool] = None, + ) -> Union[Tuple, ClapOutput]: + r""" + Returns: + + Examples: + + ```python + >>> from datasets import load_dataset + >>> from transformers import AutoProcessor, ClapModel + + >>> dataset = load_dataset("hf-internal-testing/ashraq-esc50-1-dog-example") + >>> audio_sample = dataset["train"]["audio"][0]["array"] + + >>> model = ClapModel.from_pretrained("laion/clap-htsat-unfused") + >>> processor = AutoProcessor.from_pretrained("laion/clap-htsat-unfused") + + >>> input_text = ["Sound of a dog", "Sound of vaccum cleaner"] + + >>> inputs = processor(text=input_text, audios=audio_sample, return_tensors="pt", padding=True) + + >>> outputs = model(**inputs) + >>> logits_per_audio = outputs.logits_per_audio # this is the audio-text similarity score + >>> probs = logits_per_audio.softmax(dim=-1) # we can take the softmax to get the label probabilities + ```""" + # Use CLAP model's config for some fields (if specified) instead of those of audio & text components. + output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions + output_hidden_states = ( + output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states + ) + return_dict = return_dict if return_dict is not None else self.config.use_return_dict + + audio_outputs = self.audio_model( + input_features=input_features, + is_longer=is_longer, + output_attentions=output_attentions, + output_hidden_states=output_hidden_states, + return_dict=return_dict, + ) + + text_outputs = self.text_model( + input_ids=input_ids, + attention_mask=attention_mask, + position_ids=position_ids, + output_attentions=output_attentions, + output_hidden_states=output_hidden_states, + return_dict=return_dict, + ) + + audio_embeds = audio_outputs[1] if not return_dict else audio_outputs.pooler_output + audio_embeds = self.audio_projection(audio_embeds) + + text_embeds = text_outputs[1] if not return_dict else text_outputs.pooler_output + text_embeds = self.text_projection(text_embeds) + + # normalized features + audio_embeds = audio_embeds / audio_embeds.norm(p=2, dim=-1, keepdim=True) + text_embeds = text_embeds / text_embeds.norm(p=2, dim=-1, keepdim=True) + + # cosine similarity as logits + logit_scale_text = self.logit_scale_t.exp() + logit_scale_audio = self.logit_scale_a.exp() + logits_per_text = torch.matmul(text_embeds, audio_embeds.t()) * logit_scale_text + logits_per_audio = torch.matmul(audio_embeds, text_embeds.t()) * logit_scale_audio + + loss = None + if return_loss: + caption_loss = contrastive_loss(logits_per_text) + audio_loss = contrastive_loss(logits_per_audio.t()) + loss = (caption_loss + audio_loss) / 2.0 + + if not return_dict: + output = (logits_per_audio, logits_per_text, text_embeds, audio_embeds, text_outputs, audio_outputs) + return ((loss,) + output) if loss is not None else output + + return ClapOutput( + loss=loss, + logits_per_audio=logits_per_audio, + logits_per_text=logits_per_text, + text_embeds=text_embeds, + audio_embeds=audio_embeds, + text_model_output=text_outputs, + audio_model_output=audio_outputs, + ) + + +@add_start_docstrings( + """ + CLAP Text Model with a projection layer on top (a linear layer on top of the pooled output). + """, + CLAP_START_DOCSTRING, +) +class ClapTextModelWithProjection(ClapPreTrainedModel): + config_class = ClapTextConfig + + def __init__(self, config: ClapTextConfig): + super().__init__(config) + self.text_model = ClapTextModel(config) + self.text_projection = ClapProjectionLayer(config) + # Initialize weights and apply final processing + self.post_init() + + def get_input_embeddings(self) -> nn.Module: + return self.text_model.embeddings.word_embeddings + + def set_input_embeddings(self, value): + self.text_model.embeddings.word_embeddings = value + + @add_start_docstrings_to_model_forward(CLAP_TEXT_INPUTS_DOCSTRING) + @replace_return_docstrings(output_type=ClapTextModelOutput, config_class=ClapTextConfig) + def forward( + self, + input_ids: Optional[torch.Tensor] = None, + attention_mask: Optional[torch.Tensor] = None, + position_ids: Optional[torch.Tensor] = None, + output_attentions: Optional[bool] = None, + output_hidden_states: Optional[bool] = None, + return_dict: Optional[bool] = None, + ) -> Union[Tuple, ClapTextModelOutput]: + r""" + Returns: + + Examples: + + ```python + >>> from transformers import AutoTokenizer, ClapTextModelWithProjection + + >>> model = ClapTextModelWithProjection.from_pretrained("laion/clap-htsat-unfused") + >>> tokenizer = AutoTokenizer.from_pretrained("laion/clap-htsat-unfused") + + >>> inputs = tokenizer(["a sound of a cat", "a sound of a dog"], padding=True, return_tensors="pt") + + >>> outputs = model(**inputs) + >>> text_embeds = outputs.text_embeds + ```""" + return_dict = return_dict if return_dict is not None else self.config.use_return_dict + + text_outputs = self.text_model( + input_ids=input_ids, + attention_mask=attention_mask, + position_ids=position_ids, + output_attentions=output_attentions, + output_hidden_states=output_hidden_states, + return_dict=return_dict, + ) + + pooled_output = text_outputs[1] if not return_dict else text_outputs.pooler_output + + text_embeds = self.text_projection(pooled_output) + + if not return_dict: + outputs = (text_embeds, text_outputs[0]) + text_outputs[2:] + return tuple(output for output in outputs if output is not None) + + return ClapTextModelOutput( + text_embeds=text_embeds, + last_hidden_state=text_outputs.last_hidden_state, + hidden_states=text_outputs.hidden_states, + attentions=text_outputs.attentions, + ) + + +@add_start_docstrings( + """ + CLAP Audio Model with a projection layer on top (a linear layer on top of the pooled output). + """, + CLAP_START_DOCSTRING, +) +class ClapAudioModelWithProjection(ClapPreTrainedModel): + config_class = ClapAudioConfig + main_input_name = "input_features" + + def __init__(self, config: ClapAudioConfig): + super().__init__(config) + self.audio_model = ClapAudioModel(config) + self.audio_projection = ClapProjectionLayer(config) + # Initialize weights and apply final processing + self.post_init() + + def get_input_embeddings(self) -> nn.Module: + return self.audio_model.audio_encoder.patch_embed.proj + + @add_start_docstrings_to_model_forward(CLAP_AUDIO_INPUTS_DOCSTRING) + @replace_return_docstrings(output_type=ClapAudioModelOutput, config_class=ClapAudioConfig) + def forward( + self, + input_features: Optional[torch.FloatTensor] = None, + is_longer: Optional[torch.BoolTensor] = None, + output_attentions: Optional[bool] = None, + output_hidden_states: Optional[bool] = None, + return_dict: Optional[bool] = None, + ) -> Union[Tuple, ClapAudioModelOutput]: + r""" + Returns: + + Examples: + + ```python + >>> from datasets import load_dataset + >>> from transformers import ClapAudioModelWithProjection, ClapProcessor + + >>> model = ClapAudioModelWithProjection.from_pretrained("laion/clap-htsat-fused") + >>> processor = ClapProcessor.from_pretrained("laion/clap-htsat-fused") + + >>> dataset = load_dataset("hf-internal-testing/ashraq-esc50-1-dog-example") + >>> audio_sample = dataset["train"]["audio"][0]["array"] + + >>> inputs = processor(audios=audio_sample, return_tensors="pt") + >>> outputs = model(**inputs) + >>> audio_embeds = outputs.audio_embeds + ```""" + return_dict = return_dict if return_dict is not None else self.config.use_return_dict + output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions + output_hidden_states = ( + output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states + ) + + audio_outputs = self.audio_model( + input_features=input_features, + is_longer=is_longer, + output_attentions=output_attentions, + output_hidden_states=output_hidden_states, + return_dict=return_dict, + ) + + pooled_output = audio_outputs[1] if not return_dict else audio_outputs.pooler_output + + audio_embeds = self.audio_projection(pooled_output) + + if not return_dict: + outputs = (audio_embeds, audio_outputs[0]) + audio_outputs[2:] + return tuple(output for output in outputs if output is not None) + + return ClapAudioModelOutput( + audio_embeds=audio_embeds, + last_hidden_state=audio_outputs.last_hidden_state, + attentions=audio_outputs.attentions, + hidden_states=audio_outputs.hidden_states, + )