343 lines
14 KiB
Python
343 lines
14 KiB
Python
# Copyright (C) 2025 AIDC-AI
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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Edge TTS Utility - Temporarily not used
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This is the original edge-tts implementation, kept here for potential future use.
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Currently, TTS service uses ComfyUI workflows only.
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"""
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import asyncio
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import ssl
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import random
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import edge_tts as edge_tts_sdk
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from loguru import logger
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from aiohttp import WSServerHandshakeError, ClientResponseError
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# Global flag for SSL verification (set to False for development only)
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_SSL_VERIFY_ENABLED = False
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# Retry configuration for Edge TTS (to handle 401 errors)
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_RETRY_COUNT = 5 # Default retry count (increased from 3 to 5)
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_RETRY_BASE_DELAY = 1.0 # Base retry delay in seconds (for exponential backoff)
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_MAX_RETRY_DELAY = 10.0 # Maximum retry delay in seconds
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# Rate limiting configuration
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_REQUEST_DELAY = 0.5 # Minimum delay before each request (seconds)
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_MAX_CONCURRENT_REQUESTS = 3 # Maximum concurrent requests
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# Global semaphore for rate limiting
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_request_semaphore = asyncio.Semaphore(_MAX_CONCURRENT_REQUESTS)
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async def edge_tts(
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text: str,
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voice: str = "[Chinese] zh-CN Yunjian",
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rate: str = "+0%",
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volume: str = "+0%",
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pitch: str = "+0Hz",
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output_path: str = None,
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retry_count: int = _RETRY_COUNT,
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retry_base_delay: float = _RETRY_BASE_DELAY,
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) -> bytes:
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"""
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Convert text to speech using Microsoft Edge TTS
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This service is free and requires no API key.
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Supports 400+ voices across 100+ languages.
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Returns audio data as bytes (MP3 format).
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Includes automatic retry mechanism with exponential backoff and jitter
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to handle 401 authentication errors and temporary network issues.
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Also includes concurrent request limiting and rate limiting.
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Args:
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text: Text to convert to speech
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voice: Voice ID (e.g., [Chinese] zh-CN Yunjian, [English] en-US Jenny)
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rate: Speech rate (e.g., +0%, +50%, -20%)
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volume: Speech volume (e.g., +0%, +50%, -20%)
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pitch: Speech pitch (e.g., +0Hz, +10Hz, -5Hz)
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output_path: Optional output file path to save audio
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retry_count: Number of retries on failure (default: 5)
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retry_base_delay: Base delay for exponential backoff (default: 1.0s)
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Returns:
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Audio data as bytes (MP3 format)
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Popular Chinese voices:
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- [Chinese] zh-CN Yunjian (male, default)
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- [Chinese] zh-CN Xiaoxiao (female)
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- [Chinese] zh-CN Yunxi (male)
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- [Chinese] zh-CN Xiaoyi (female)
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Popular English voices:
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- [English] en-US Jenny (female)
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- [English] en-US Guy (male)
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- [English] en-GB Sonia (female, British)
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Example:
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audio_bytes = await edge_tts(
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text="你好，世界！",
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voice="[Chinese] zh-CN Yunjian",
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rate="+20%"
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)
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"""
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logger.debug(f"Calling Edge TTS with voice: {voice}, rate: {rate}, retry_count: {retry_count}")
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# Use semaphore to limit concurrent requests
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async with _request_semaphore:
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# Add a small random delay before each request to avoid rate limiting
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pre_delay = _REQUEST_DELAY + random.uniform(0, 0.3)
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logger.debug(f"Waiting {pre_delay:.2f}s before request (rate limiting)")
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await asyncio.sleep(pre_delay)
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last_error = None
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# Retry loop
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for attempt in range(retry_count + 1): # +1 because first attempt is not a retry
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if attempt > 0:
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# Exponential backoff with jitter
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# delay = base * (2 ^ attempt) + random jitter
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exponential_delay = retry_base_delay * (2 ** (attempt - 1))
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jitter = random.uniform(0, retry_base_delay)
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retry_delay = min(exponential_delay + jitter, _MAX_RETRY_DELAY)
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logger.info(f"🔄 Retrying Edge TTS (attempt {attempt + 1}/{retry_count + 1}) after {retry_delay:.2f}s delay...")
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await asyncio.sleep(retry_delay)
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# Monkey patch ssl.create_default_context if SSL verification is disabled
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if not _SSL_VERIFY_ENABLED:
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if attempt == 0: # Only log warning once
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logger.warning("SSL verification is disabled for development. This is NOT recommended for production!")
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original_create_default_context = ssl.create_default_context
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def create_unverified_context(*args, **kwargs):
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ctx = original_create_default_context(*args, **kwargs)
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ctx.check_hostname = False
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ctx.verify_mode = ssl.CERT_NONE
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return ctx
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# Temporarily replace the function
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ssl.create_default_context = create_unverified_context
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try:
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# Create communicate instance
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communicate = edge_tts_sdk.Communicate(
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text=text,
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voice=voice,
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rate=rate,
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volume=volume,
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pitch=pitch,
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)
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# Collect audio chunks
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audio_chunks = []
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async for chunk in communicate.stream():
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if chunk["type"] == "audio":
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audio_chunks.append(chunk["data"])
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audio_data = b"".join(audio_chunks)
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if attempt > 0:
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logger.success(f"✅ Retry succeeded on attempt {attempt + 1}")
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logger.info(f"Generated {len(audio_data)} bytes of audio data")
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# Save to file if output_path is provided
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if output_path:
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with open(output_path, "wb") as f:
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f.write(audio_data)
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logger.info(f"Audio saved to: {output_path}")
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return audio_data
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except (WSServerHandshakeError, ClientResponseError) as e:
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# Network/authentication errors - retry
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last_error = e
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error_code = getattr(e, 'status', 'unknown')
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error_msg = str(e)
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# Log more detailed information for 401 errors
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if error_code == 401 or '401' in error_msg:
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logger.warning(f"⚠️ Edge TTS 401 Authentication Error (attempt {attempt + 1}/{retry_count + 1})")
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logger.debug(f"Error details: {error_msg}")
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logger.debug(f"This is usually caused by rate limiting. Will retry with exponential backoff...")
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else:
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logger.warning(f"⚠️ Edge TTS error (attempt {attempt + 1}/{retry_count + 1}): {error_code} - {e}")
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if attempt >= retry_count:
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# Last attempt failed
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logger.error(f"❌ All {retry_count + 1} attempts failed. Last error: {error_code}")
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raise
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# Otherwise, continue to next retry
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except Exception as e:
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# Other errors - don't retry, raise immediately
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logger.error(f"Edge TTS error (non-retryable): {type(e).__name__} - {e}")
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raise
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finally:
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# Restore original function if we patched it
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if not _SSL_VERIFY_ENABLED:
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ssl.create_default_context = original_create_default_context
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# Should not reach here, but just in case
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if last_error:
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raise last_error
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else:
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raise RuntimeError("Edge TTS failed without error (unexpected)")
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def get_audio_duration(audio_path: str) -> float:
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"""
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Get audio file duration in seconds
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Args:
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audio_path: Path to audio file
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Returns:
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Duration in seconds
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"""
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try:
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# Try using ffmpeg-python
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import ffmpeg
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probe = ffmpeg.probe(audio_path)
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duration = float(probe['format']['duration'])
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return duration
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except Exception as e:
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logger.warning(f"Failed to get audio duration: {e}, using estimate")
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# Fallback: estimate based on file size (very rough)
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import os
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file_size = os.path.getsize(audio_path)
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# Assume ~16kbps for MP3, so 2KB per second
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estimated_duration = file_size / 2000
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return max(1.0, estimated_duration) # At least 1 second
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async def list_voices(locale: str = None, retry_count: int = _RETRY_COUNT, retry_base_delay: float = _RETRY_BASE_DELAY) -> list[str]:
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"""
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List all available voices for Edge TTS
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Returns a list of voice IDs (ShortName).
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Optionally filter by locale.
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Includes automatic retry mechanism with exponential backoff and jitter
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to handle network errors and rate limiting.
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Args:
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locale: Filter by locale (e.g., zh-CN, en-US, ja-JP)
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retry_count: Number of retries on failure (default: 5)
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retry_base_delay: Base delay for exponential backoff (default: 1.0s)
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Returns:
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List of voice IDs
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Example:
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# List all voices
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voices = await list_voices()
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# Returns: ['[Chinese] zh-CN Yunjian', '[Chinese] zh-CN Xiaoxiao', ...]
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# List Chinese voices only
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voices = await list_voices(locale="zh-CN")
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# Returns: ['[Chinese] zh-CN Yunjian', '[Chinese] zh-CN Xiaoxiao', ...]
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"""
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logger.debug(f"Fetching Edge TTS voices, locale filter: {locale}, retry_count: {retry_count}")
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# Use semaphore to limit concurrent requests
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async with _request_semaphore:
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# Add a small random delay before each request to avoid rate limiting
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pre_delay = _REQUEST_DELAY + random.uniform(0, 0.3)
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logger.debug(f"Waiting {pre_delay:.2f}s before request (rate limiting)")
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await asyncio.sleep(pre_delay)
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last_error = None
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# Retry loop
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for attempt in range(retry_count + 1):
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if attempt > 0:
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# Exponential backoff with jitter
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exponential_delay = retry_base_delay * (2 ** (attempt - 1))
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jitter = random.uniform(0, retry_base_delay)
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retry_delay = min(exponential_delay + jitter, _MAX_RETRY_DELAY)
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logger.info(f"🔄 Retrying list voices (attempt {attempt + 1}/{retry_count + 1}) after {retry_delay:.2f}s delay...")
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await asyncio.sleep(retry_delay)
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# Monkey patch SSL if verification is disabled
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if not _SSL_VERIFY_ENABLED:
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if attempt == 0: # Only log warning once
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logger.warning("SSL verification is disabled for development. This is NOT recommended for production!")
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original_create_default_context = ssl.create_default_context
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def create_unverified_context(*args, **kwargs):
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ctx = original_create_default_context(*args, **kwargs)
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ctx.check_hostname = False
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ctx.verify_mode = ssl.CERT_NONE
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return ctx
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ssl.create_default_context = create_unverified_context
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try:
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# Get all voices
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voices = await edge_tts_sdk.list_voices()
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# Filter by locale if specified
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if locale:
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voices = [v for v in voices if v["Locale"].startswith(locale)]
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# Extract voice IDs (ShortName)
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voice_ids = [voice["ShortName"] for voice in voices]
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if attempt > 0:
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logger.success(f"✅ Retry succeeded on attempt {attempt + 1}")
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logger.info(f"Found {len(voice_ids)} voices" + (f" for locale '{locale}'" if locale else ""))
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return voice_ids
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except (WSServerHandshakeError, ClientResponseError) as e:
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# Network/authentication errors - retry
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last_error = e
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error_code = getattr(e, 'status', 'unknown')
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error_msg = str(e)
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# Log more detailed information for 401 errors
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if error_code == 401 or '401' in error_msg:
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logger.warning(f"⚠️ Edge TTS 401 Authentication Error (list_voices attempt {attempt + 1}/{retry_count + 1})")
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logger.debug(f"Error details: {error_msg}")
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logger.debug(f"This is usually caused by rate limiting. Will retry with exponential backoff...")
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else:
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logger.warning(f"⚠️ List voices error (attempt {attempt + 1}/{retry_count + 1}): {error_code} - {e}")
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if attempt >= retry_count:
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logger.error(f"❌ All {retry_count + 1} attempts failed. Last error: {error_code}")
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raise
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except Exception as e:
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# Other errors - don't retry, raise immediately
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logger.error(f"List voices error (non-retryable): {type(e).__name__} - {e}")
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raise
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finally:
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# Restore original function if we patched it
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if not _SSL_VERIFY_ENABLED:
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ssl.create_default_context = original_create_default_context
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# Should not reach here, but just in case
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if last_error:
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raise last_error
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else:
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raise RuntimeError("List voices failed without error (unexpected)")
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