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"""TTS provider factory for creating and managing TTS providers."""
import logging
from typing import Dict, List, Optional, Type
from ..base.tts_provider_base import TTSProviderBase
from ...domain.exceptions import SpeechSynthesisException
logger = logging.getLogger(__name__)
class TTSProviderFactory:
"""Factory for creating and managing TTS providers."""
def __init__(self):
"""Initialize the TTS provider factory."""
self._providers: Dict[str, Type[TTSProviderBase]] = {}
self._provider_instances: Dict[str, TTSProviderBase] = {}
self._register_default_providers()
def _register_default_providers(self):
"""Register all available TTS providers."""
# Import providers dynamically to avoid import errors if dependencies are missing
# Always register dummy provider as fallback
from .dummy_provider import DummyTTSProvider
self._providers['dummy'] = DummyTTSProvider
# Try to register Kokoro provider
try:
from .kokoro_provider import KokoroTTSProvider
self._providers['kokoro'] = KokoroTTSProvider
logger.info("Registered Kokoro TTS provider")
except ImportError as e:
logger.info(f"Kokoro TTS provider not available: {e}")
# Try to register Dia provider
try:
from .dia_provider import DiaTTSProvider
self._providers['dia'] = DiaTTSProvider
logger.info("Registered Dia TTS provider")
except ImportError as e:
logger.warning(f"Dia TTS provider not available: {e}")
# Still register it so it can attempt installation later
try:
from .dia_provider import DiaTTSProvider
self._providers['dia'] = DiaTTSProvider
logger.info("Registered Dia TTS provider (dependencies may be installed on demand)")
except Exception:
logger.warning("Failed to register Dia TTS provider")
except Exception as e:
logger.warning(f"Failed to register Dia TTS provider: {e}")
# Try to register CosyVoice2 provider
try:
from .cosyvoice2_provider import CosyVoice2TTSProvider
self._providers['cosyvoice2'] = CosyVoice2TTSProvider
logger.info("Registered CosyVoice2 TTS provider")
except ImportError as e:
logger.info(f"CosyVoice2 TTS provider not available: {e}")
# Try to register Chatterbox provider
try:
from .chatterbox_provider import ChatterboxTTSProvider
self._providers['chatterbox'] = ChatterboxTTSProvider
logger.info("Registered Chatterbox TTS provider")
except ImportError as e:
logger.info(f"Chatterbox TTS provider not available: {e}")
def get_available_providers(self) -> List[str]:
"""Get list of available TTS providers."""
logger.info("🔍 Checking availability of TTS providers...")
available = []
for name, provider_class in self._providers.items():
logger.info(f"Checking provider: {name}")
try:
# Create instance if not cached
if name not in self._provider_instances:
logger.info(f"Creating instance for {name} provider")
if name == 'kokoro':
self._provider_instances[name] = provider_class()
elif name == 'dia':
logger.info(f"🔧 Creating Dia TTS provider instance...")
self._provider_instances[name] = provider_class()
elif name == 'cosyvoice2':
self._provider_instances[name] = provider_class()
elif name == 'chatterbox':
self._provider_instances[name] = provider_class()
else:
self._provider_instances[name] = provider_class()
# Check if provider is available
logger.info(f"Checking availability for {name}")
is_available = self._provider_instances[name].is_available()
logger.info(f"Provider {name} availability: {'✅ Available' if is_available else '❌ Not Available'}")
if is_available:
available.append(name)
except Exception as e:
logger.warning(f"❌ Failed to check availability of {name} provider: {e}")
logger.info(f"Provider check error details: {type(e).__name__}: {e}")
logger.info(f"📋 Available TTS providers: {available}")
return available
def create_provider(self, provider_name: str, **kwargs) -> TTSProviderBase:
"""
Create a TTS provider instance.
Args:
provider_name: Name of the provider to create
**kwargs: Additional arguments for provider initialization
Returns:
TTSProviderBase: The created provider instance
Raises:
SpeechSynthesisException: If provider is not available or creation fails
"""
if provider_name not in self._providers:
available = list(self._providers.keys())
raise SpeechSynthesisException(
f"Unknown TTS provider: {provider_name}. Available providers: {available}"
)
# Check if provider is actually available before creating
available_providers = self.get_available_providers()
if provider_name not in available_providers:
logger.warning(f"TTS provider {provider_name} is registered but not available")
raise SpeechSynthesisException(f"TTS provider {provider_name} is not available")
try:
provider_class = self._providers[provider_name]
# Create instance with appropriate parameters
if provider_name in ['kokoro', 'dia', 'cosyvoice2', 'chatterbox']:
lang_code = kwargs.get('lang_code', 'en' if provider_name == 'chatterbox' else 'z')
provider = provider_class(lang_code=lang_code)
else:
provider = provider_class(**kwargs)
# Verify the provider is available
if not provider.is_available():
raise SpeechSynthesisException(f"TTS provider {provider_name} is not available")
logger.info(f"Created TTS provider: {provider_name}")
return provider
except Exception as e:
logger.error(f"Failed to create TTS provider {provider_name}: {e}")
raise SpeechSynthesisException(f"Failed to create TTS provider {provider_name}: {e}") from e
def get_provider_with_fallback(self, preferred_providers: List[str] = None, **kwargs) -> TTSProviderBase:
"""
Get a TTS provider with fallback logic.
Args:
preferred_providers: List of preferred providers in order of preference
**kwargs: Additional arguments for provider initialization
Returns:
TTSProviderBase: The first available provider
Raises:
SpeechSynthesisException: If no providers are available
"""
if preferred_providers is None:
preferred_providers = ['kokoro', 'dia', 'cosyvoice2', 'chatterbox', 'dummy']
logger.info(f"🔄 Getting TTS provider with fallback, preferred order: {preferred_providers}")
available_providers = self.get_available_providers()
# Try preferred providers in order
for provider_name in preferred_providers:
logger.info(f"🔍 Trying preferred provider: {provider_name}")
if provider_name in available_providers:
logger.info(f"✅ Provider {provider_name} is available, attempting to create...")
try:
provider = self.create_provider(provider_name, **kwargs)
logger.info(f"🎉 Successfully created provider: {provider_name}")
return provider
except Exception as e:
logger.warning(f"❌ Failed to create preferred provider {provider_name}: {e}")
continue
else:
logger.info(f"❌ Provider {provider_name} is not in available providers list")
# If no preferred providers work, try any available provider
for provider_name in available_providers:
if provider_name not in preferred_providers:
try:
return self.create_provider(provider_name, **kwargs)
except Exception as e:
logger.warning(f"Failed to create fallback provider {provider_name}: {e}")
continue
raise SpeechSynthesisException("No TTS providers are available")
def get_provider_info(self, provider_name: str) -> Dict:
"""
Get information about a specific provider.
Args:
provider_name: Name of the provider
Returns:
Dict: Provider information including availability and supported features
"""
if provider_name not in self._providers:
return {"available": False, "error": "Provider not registered"}
try:
# Create instance if not cached
if provider_name not in self._provider_instances:
provider_class = self._providers[provider_name]
if provider_name in ['kokoro', 'dia', 'cosyvoice2', 'chatterbox']:
self._provider_instances[provider_name] = provider_class()
else:
self._provider_instances[provider_name] = provider_class()
provider = self._provider_instances[provider_name]
return {
"available": provider.is_available(),
"name": provider.provider_name,
"supported_languages": provider.supported_languages,
"available_voices": provider.get_available_voices() if provider.is_available() else []
}
except Exception as e:
return {
"available": False,
"error": str(e)
}
def cleanup_providers(self):
"""Clean up provider instances and resources."""
for provider in self._provider_instances.values():
try:
if hasattr(provider, '_cleanup_temp_files'):
provider._cleanup_temp_files()
except Exception as e:
logger.warning(f"Failed to cleanup provider {provider.provider_name}: {e}")
self._provider_instances.clear()
logger.info("Cleaned up TTS provider instances") |