1475 lines
62 KiB
Python
1475 lines
62 KiB
Python
import asyncio
|
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import logging
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import re
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import shutil
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from pathlib import Path
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from typing import Optional
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from sqlalchemy.orm import Session
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from core.config import settings
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from core.llm_service import LLMService
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from core import progress_store as ps
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from db import crud
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from db.models import AudiobookProject, AudiobookCharacter, User
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||
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logger = logging.getLogger(__name__)
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||
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_LINE_RE = re.compile(r'^【(.+?)】(.*)$')
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_EMO_RE = re.compile(r'（(开心|愤怒|悲伤|恐惧|厌恶|低沉|惊讶):([0-9.]+)）\s*$')
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# Cancellation events for batch operations, keyed by project_id
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_cancel_events: dict[int, asyncio.Event] = {}
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||
|
||
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def cancel_batch(project_id: int) -> None:
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||
"""Signal cancellation for any running batch operation on this project."""
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ev = _cancel_events.get(project_id)
|
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if ev:
|
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ev.set()
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logger.info(f"cancel_batch: project={project_id} cancellation signalled")
|
||
|
||
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def _get_llm_service(db: Session) -> LLMService:
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from core.security import decrypt_api_key
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from db.crud import get_system_setting
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api_key_encrypted = get_system_setting(db, "llm_api_key")
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base_url = get_system_setting(db, "llm_base_url")
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model = get_system_setting(db, "llm_model")
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if not api_key_encrypted or not base_url or not model:
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||
raise ValueError("LLM config not set. Please configure LLM API key, base URL, and model in admin settings.")
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api_key = decrypt_api_key(api_key_encrypted)
|
||
if not api_key:
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raise ValueError("Failed to decrypt LLM API key.")
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return LLMService(base_url=base_url, api_key=api_key, model=model)
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def _get_gendered_instruct(gender: Optional[str], base_instruct: str) -> str:
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||
"""Ensure the instruction sent to the TTS model has explicit gender cues if known."""
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if not gender or gender == "未知":
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||
return base_instruct
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||
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||
# We want to force a clear gender bias at the start of the prompt
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prefix = ""
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||
if gender == "男":
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prefix = "男性声音，"
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||
elif gender == "女":
|
||
prefix = "女性声音，"
|
||
|
||
if prefix and prefix not in base_instruct:
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||
# Prepend prefix, but try to be smart if the first line starts with "音色信息："
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||
if base_instruct.startswith("音色信息："):
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return base_instruct.replace("音色信息：", f"音色信息：{prefix}", 1)
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return f"{prefix}{base_instruct}"
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return base_instruct
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def _extract_epub_chapters(file_path: str) -> list[str]:
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try:
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import ebooklib
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from ebooklib import epub
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from html.parser import HTMLParser
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||
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class TextExtractor(HTMLParser):
|
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def __init__(self):
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super().__init__()
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self.parts = []
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self._skip = False
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||
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def handle_starttag(self, tag, attrs):
|
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if tag in ("script", "style"):
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self._skip = True
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def handle_endtag(self, tag):
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if tag in ("script", "style"):
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self._skip = False
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||
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def handle_data(self, data):
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||
if not self._skip:
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||
text = data.strip()
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||
if text:
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self.parts.append(text)
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||
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book = epub.read_epub(file_path)
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chapters = []
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spine_ids = {item_id for item_id, _ in book.spine}
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for item in book.get_items_of_type(ebooklib.ITEM_DOCUMENT):
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if item.id not in spine_ids:
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continue
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fname = (item.file_name or "").lower()
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if any(kw in fname for kw in ("nav", "toc", "cover", "title", "copyright")):
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continue
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extractor = TextExtractor()
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extractor.feed(item.get_content().decode("utf-8", errors="ignore"))
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text = "\n".join(extractor.parts).strip()
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if len(text) > 200:
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chapters.append(text)
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if not chapters:
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||
for item in book.get_items_of_type(ebooklib.ITEM_DOCUMENT):
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extractor = TextExtractor()
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extractor.feed(item.get_content().decode("utf-8", errors="ignore"))
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text = "\n".join(extractor.parts).strip()
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if len(text) > 200:
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chapters.append(text)
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return chapters
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||
except ImportError:
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raise RuntimeError("ebooklib not installed. Run: pip install EbookLib")
|
||
|
||
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def _sample_full_text(text: str, n_samples: int = 8, sample_size: int = 3000) -> list[str]:
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if len(text) <= 30000:
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return [text]
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segment_size = len(text) // n_samples
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samples = []
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||
for i in range(n_samples):
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start = i * segment_size
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boundary = text.find("。", start, start + 200)
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actual_start = boundary + 1 if boundary != -1 else start
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samples.append(text[actual_start:actual_start + sample_size])
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return samples
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||
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||
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def _chunk_chapter(text: str, max_chars: int = 4000) -> list[str]:
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||
if len(text) <= max_chars:
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return [text]
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||
chunks = []
|
||
while text:
|
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if len(text) <= max_chars:
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chunks.append(text)
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break
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break_at = max(
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text.rfind("。", 0, max_chars),
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text.rfind("\n", 0, max_chars),
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)
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if break_at <= 0:
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break_at = max_chars
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chunks.append(text[:break_at + 1])
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text = text[break_at + 1:]
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return chunks
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||
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def _split_into_chapters(text: str) -> list[str]:
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chapter_pattern = re.compile(r'(?:第[零一二三四五六七八九十百千\d]+[章节回]|Chapter\s+\d+)', re.IGNORECASE)
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matches = list(chapter_pattern.finditer(text))
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if not matches:
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return [text]
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chapters = []
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for i, match in enumerate(matches):
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start = match.start()
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end = matches[i + 1].start() if i + 1 < len(matches) else len(text)
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chapters.append(text[start:end])
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return chapters
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def parse_ai_script(script_text: str, char_map: dict) -> list[dict]:
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results = []
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for raw_line in script_text.splitlines():
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||
line = raw_line.strip()
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||
if not line:
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||
continue
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m = _LINE_RE.match(line)
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if not m:
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if results:
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results[-1]["text"] = results[-1]["text"] + " " + line
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continue
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speaker = m.group(1).strip()
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content = m.group(2).strip()
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emo_text = None
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emo_alpha = None
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emo_m = _EMO_RE.search(content)
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if emo_m:
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emo_text = emo_m.group(1)
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try:
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||
emo_alpha = float(emo_m.group(2))
|
||
except ValueError:
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||
emo_alpha = None
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content = content[:emo_m.start()].strip()
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if content.startswith('"') and content.endswith('"'):
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content = content[1:-1].strip()
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elif content.startswith('"') and content.endswith('"'):
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content = content[1:-1].strip()
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||
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character = speaker
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results.append({
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"character": character,
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"text": content,
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||
"emo_text": emo_text,
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"emo_alpha": emo_alpha,
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})
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return results
|
||
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async def generate_ai_script(project_id: int, user: User, db: Session) -> None:
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from core.database import SessionLocal
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project = db.query(AudiobookProject).filter(AudiobookProject.id == project_id).first()
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if not project or not project.script_config:
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||
return
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key = str(project_id)
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ps.reset(key)
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cfg = project.script_config
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try:
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crud.update_audiobook_project_status(db, project_id, "analyzing")
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ps.append_line(key, f"[AI剧本] 项目「{project.title}」开始生成剧本")
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llm = _get_llm_service(db)
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_llm_model = crud.get_system_setting(db, "llm_model")
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_user_id = user.id
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def _log_usage(prompt_tokens: int, completion_tokens: int) -> None:
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log_db = SessionLocal()
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try:
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crud.create_usage_log(log_db, _user_id, prompt_tokens, completion_tokens,
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model=_llm_model, context="ai_script_generate")
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finally:
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||
log_db.close()
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||
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genre = cfg.get("genre", "")
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||
subgenre = cfg.get("subgenre", "")
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||
premise = cfg.get("premise", "")
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style = cfg.get("style", "")
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num_characters = cfg.get("num_characters", 5)
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||
num_chapters = cfg.get("num_chapters", 8)
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ps.append_line(key, f"\n[Step 1] 生成 {num_characters} 个角色...\n")
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ps.append_line(key, "")
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def on_token(token: str) -> None:
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||
ps.append_token(key, token)
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||
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||
characters_data = await llm.generate_story_characters(
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genre=genre, subgenre=subgenre, premise=premise, style=style,
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||
num_characters=num_characters, usage_callback=_log_usage,
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||
)
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||
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has_narrator = any(c.get("name") in ("narrator", "旁白") for c in characters_data)
|
||
if not has_narrator:
|
||
characters_data.insert(0, {
|
||
"name": "旁白",
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||
"gender": "未知",
|
||
"description": "第三人称旁白叙述者",
|
||
"instruct": (
|
||
"音色信息：浑厚醇厚的男性中低音，嗓音饱满有力，带有传统说书人的磁性与感染力\n"
|
||
"身份背景：中国传统说书艺人，精通评书、章回小说叙述艺术，深谙故事节奏与听众心理\n"
|
||
"年龄设定：中年男性，四五十岁，声音历经岁月沉淀，成熟稳重而不失活力\n"
|
||
"外貌特征：面容沉稳，气度从容，台风大气，给人以可信赖的叙述者印象\n"
|
||
"性格特质：沉稳睿智，叙事冷静客观，情到深处能引发共鸣，不动声色间娓娓道来\n"
|
||
"叙事风格：语速适中偏慢，抑扬顿挫，擅长铺垫悬念，停顿恰到好处，语气庄重而生动，富有画面感"
|
||
)
|
||
})
|
||
|
||
ps.append_line(key, f"\n\n[完成] 角色列表：{', '.join(c.get('name', '') for c in characters_data)}")
|
||
|
||
crud.delete_audiobook_segments(db, project_id)
|
||
crud.delete_audiobook_characters(db, project_id)
|
||
|
||
backend_type = user.user_preferences.get("default_backend", "aliyun") if user.user_preferences else "aliyun"
|
||
|
||
for char_data in characters_data:
|
||
name = char_data.get("name", "旁白")
|
||
if name == "narrator":
|
||
name = "旁白"
|
||
instruct = char_data.get("instruct", "")
|
||
description = char_data.get("description", "")
|
||
gender = char_data.get("gender") or ("未知" if name == "旁白" else None)
|
||
try:
|
||
voice_design = crud.create_voice_design(
|
||
db=db,
|
||
user_id=user.id,
|
||
name=f"[有声书] {project.title} - {name}",
|
||
instruct=instruct,
|
||
backend_type=backend_type,
|
||
preview_text=description[:100] if description else None,
|
||
)
|
||
crud.create_audiobook_character(
|
||
db=db,
|
||
project_id=project_id,
|
||
name=name,
|
||
gender=gender,
|
||
description=description,
|
||
instruct=instruct,
|
||
voice_design_id=voice_design.id,
|
||
)
|
||
except Exception as e:
|
||
logger.error(f"Failed to create char/voice for {name}: {e}")
|
||
|
||
crud.update_audiobook_project_status(db, project_id, "characters_ready")
|
||
ps.append_line(key, f"\n[状态] 角色创建完成，请确认角色后继续生成剧本")
|
||
ps.mark_done(key)
|
||
|
||
user_id = user.id
|
||
|
||
async def _generate_all_previews():
|
||
temp_db = SessionLocal()
|
||
try:
|
||
characters = crud.list_audiobook_characters(temp_db, project_id)
|
||
char_ids = [c.id for c in characters]
|
||
finally:
|
||
temp_db.close()
|
||
if not char_ids:
|
||
return
|
||
sem = asyncio.Semaphore(3)
|
||
async def _gen(char_id: int):
|
||
async with sem:
|
||
local_db = SessionLocal()
|
||
try:
|
||
db_user = crud.get_user_by_id(local_db, user_id)
|
||
await generate_character_preview(project_id, char_id, db_user, local_db)
|
||
except Exception as e:
|
||
logger.error(f"Background preview failed for char {char_id}: {e}")
|
||
finally:
|
||
local_db.close()
|
||
await asyncio.gather(*[_gen(cid) for cid in char_ids])
|
||
|
||
asyncio.create_task(_generate_all_previews())
|
||
|
||
except Exception as e:
|
||
logger.error(f"generate_ai_script failed for project {project_id}: {e}", exc_info=True)
|
||
ps.append_line(key, f"\n[错误] {e}")
|
||
ps.mark_done(key)
|
||
crud.update_audiobook_project_status(db, project_id, "error", error_message=str(e))
|
||
|
||
|
||
async def generate_ai_script_chapters(project_id: int, user: User, db: Session) -> None:
|
||
from core.database import SessionLocal
|
||
|
||
project = db.query(AudiobookProject).filter(AudiobookProject.id == project_id).first()
|
||
if not project or not project.script_config:
|
||
return
|
||
|
||
key = str(project_id)
|
||
ps.reset(key)
|
||
crud.update_audiobook_project_status(db, project_id, "analyzing")
|
||
cfg = project.script_config
|
||
|
||
try:
|
||
genre = cfg.get("genre", "")
|
||
subgenre = cfg.get("subgenre", "")
|
||
premise = cfg.get("premise", "")
|
||
style = cfg.get("style", "")
|
||
num_chapters = cfg.get("num_chapters", 8)
|
||
|
||
llm = _get_llm_service(db)
|
||
_llm_model = crud.get_system_setting(db, "llm_model")
|
||
_user_id = user.id
|
||
|
||
def _log_usage(prompt_tokens: int, completion_tokens: int) -> None:
|
||
log_db = SessionLocal()
|
||
try:
|
||
crud.create_usage_log(log_db, _user_id, prompt_tokens, completion_tokens,
|
||
model=_llm_model, context="ai_script_chapters")
|
||
finally:
|
||
log_db.close()
|
||
|
||
def on_token(token: str) -> None:
|
||
ps.append_token(key, token)
|
||
|
||
db_characters = crud.list_audiobook_characters(db, project_id)
|
||
characters_data = [
|
||
{"name": c.name, "gender": c.gender or "未知", "description": c.description or "", "instruct": c.instruct or ""}
|
||
for c in db_characters
|
||
]
|
||
char_map = {c.name: c for c in db_characters}
|
||
backend_type = user.user_preferences.get("default_backend", "aliyun") if user.user_preferences else "aliyun"
|
||
|
||
ps.append_line(key, f"[AI剧本] 开始生成 {num_chapters} 章大纲...\n")
|
||
ps.append_line(key, "")
|
||
|
||
chapters_data = await llm.generate_chapter_outline(
|
||
genre=genre, subgenre=subgenre, premise=premise, style=style,
|
||
num_chapters=num_chapters, characters=characters_data, usage_callback=_log_usage,
|
||
)
|
||
|
||
ps.append_line(key, f"\n\n[完成] 大纲：{len(chapters_data)} 章")
|
||
|
||
crud.delete_audiobook_chapters(db, project_id)
|
||
crud.delete_audiobook_segments(db, project_id)
|
||
|
||
project_audio_dir = Path(settings.OUTPUT_DIR) / "audiobook" / str(project_id)
|
||
for subdir in ("segments", "chapters"):
|
||
d = project_audio_dir / subdir
|
||
if d.exists():
|
||
shutil.rmtree(d, ignore_errors=True)
|
||
|
||
for ch_data in chapters_data:
|
||
idx = ch_data.get("index", 0)
|
||
title = ch_data.get("title", f"第 {idx + 1} 章")
|
||
summary = ch_data.get("summary", "")
|
||
crud.create_audiobook_chapter(db, project_id, idx, summary, title=title)
|
||
|
||
crud.update_audiobook_project_status(db, project_id, "ready")
|
||
|
||
ps.append_line(key, f"\n[Step 2] 逐章生成对话脚本...\n")
|
||
|
||
for ch_data in chapters_data:
|
||
idx = ch_data.get("index", 0)
|
||
title = ch_data.get("title", f"第 {idx + 1} 章")
|
||
summary = ch_data.get("summary", "")
|
||
|
||
ps.append_line(key, f"\n第 {idx + 1} 章「{title}」→ ")
|
||
ps.append_line(key, "")
|
||
|
||
chapter_obj = crud.get_audiobook_chapter_by_index(db, project_id, idx)
|
||
if not chapter_obj:
|
||
continue
|
||
|
||
try:
|
||
script_text = await llm.generate_chapter_script(
|
||
genre=genre, premise=premise,
|
||
chapter_index=idx, chapter_title=title, chapter_summary=summary,
|
||
characters=characters_data, on_token=on_token, usage_callback=_log_usage,
|
||
)
|
||
|
||
chapter_obj.source_text = script_text
|
||
db.commit()
|
||
|
||
segments_data = parse_ai_script(script_text, char_map)
|
||
|
||
unknown_speakers = {
|
||
seg["character"] for seg in segments_data
|
||
if seg["character"] != "旁白" and seg["character"] not in char_map
|
||
}
|
||
for speaker_name in sorted(unknown_speakers):
|
||
try:
|
||
npc_instruct = (
|
||
"音色信息：普通自然的中性成年人声音，语调平和\n"
|
||
"身份背景：故事中的路人或配角\n"
|
||
"年龄设定：成年人\n"
|
||
"外貌特征：普通外貌\n"
|
||
"性格特质：平淡自然\n"
|
||
"叙事风格：语速正常，语气自然"
|
||
)
|
||
npc_voice = crud.create_voice_design(
|
||
db=db, user_id=user.id,
|
||
name=f"[有声书] {project.title} - {speaker_name}",
|
||
instruct=npc_instruct, backend_type=backend_type,
|
||
)
|
||
npc_char = crud.create_audiobook_character(
|
||
db=db, project_id=project_id, name=speaker_name,
|
||
description=f"配角：{speaker_name}",
|
||
instruct=npc_instruct, voice_design_id=npc_voice.id,
|
||
)
|
||
char_map[speaker_name] = npc_char
|
||
ps.append_line(key, f"\n[NPC] 自动创建配角：{speaker_name}")
|
||
except Exception as e:
|
||
logger.error(f"Failed to create NPC {speaker_name}: {e}")
|
||
|
||
crud.delete_audiobook_segments_for_chapter(db, project_id, idx)
|
||
|
||
seg_counter = 0
|
||
for seg in segments_data:
|
||
seg_text = seg.get("text", "").strip()
|
||
if not seg_text:
|
||
continue
|
||
char = char_map.get(seg.get("character", "旁白")) or char_map.get("旁白")
|
||
if not char:
|
||
continue
|
||
crud.create_audiobook_segment(
|
||
db, project_id, char.id, seg_text,
|
||
chapter_index=idx, segment_index=seg_counter,
|
||
emo_text=seg.get("emo_text"), emo_alpha=seg.get("emo_alpha"),
|
||
)
|
||
seg_counter += 1
|
||
|
||
crud.update_audiobook_chapter_status(db, chapter_obj.id, "ready")
|
||
ps.append_line(key, f"\n✓ {seg_counter} 段")
|
||
|
||
except Exception as e:
|
||
logger.error(f"Chapter {idx} script generation failed: {e}", exc_info=True)
|
||
ps.append_line(key, f"\n[错误] {e}")
|
||
crud.update_audiobook_chapter_status(db, chapter_obj.id, "error", error_message=str(e))
|
||
|
||
crud.update_audiobook_project_status(db, project_id, "ready")
|
||
ps.append_line(key, f"\n\n[完成] AI剧本生成完毕，项目已就绪")
|
||
ps.mark_done(key)
|
||
logger.info(f"AI script chapters generation complete for project {project_id}")
|
||
|
||
except Exception as e:
|
||
logger.error(f"generate_ai_script_chapters failed for project {project_id}: {e}", exc_info=True)
|
||
ps.append_line(key, f"\n[错误] {e}")
|
||
ps.mark_done(key)
|
||
crud.update_audiobook_project_status(db, project_id, "error", error_message=str(e))
|
||
|
||
|
||
async def continue_ai_script_chapters(project_id: int, additional_chapters: int, user: User, db: Session) -> None:
|
||
from core.database import SessionLocal
|
||
|
||
project = db.query(AudiobookProject).filter(AudiobookProject.id == project_id).first()
|
||
if not project or not project.script_config:
|
||
return
|
||
|
||
key = str(project_id)
|
||
ps.reset(key)
|
||
crud.update_audiobook_project_status(db, project_id, "generating")
|
||
cfg = project.script_config
|
||
|
||
try:
|
||
genre = cfg.get("genre", "")
|
||
subgenre = cfg.get("subgenre", "")
|
||
premise = cfg.get("premise", "")
|
||
style = cfg.get("style", "")
|
||
|
||
llm = _get_llm_service(db)
|
||
_llm_model = crud.get_system_setting(db, "llm_model")
|
||
_user_id = user.id
|
||
|
||
def _log_usage(prompt_tokens: int, completion_tokens: int) -> None:
|
||
log_db = SessionLocal()
|
||
try:
|
||
crud.create_usage_log(log_db, _user_id, prompt_tokens, completion_tokens,
|
||
model=_llm_model, context="ai_script_continue")
|
||
finally:
|
||
log_db.close()
|
||
|
||
def on_token(token: str) -> None:
|
||
ps.append_token(key, token)
|
||
|
||
db_characters = crud.list_audiobook_characters(db, project_id)
|
||
characters_data = [
|
||
{"name": c.name, "gender": c.gender or "未知", "description": c.description or "", "instruct": c.instruct or ""}
|
||
for c in db_characters
|
||
]
|
||
char_map = {c.name: c for c in db_characters}
|
||
backend_type = user.user_preferences.get("default_backend", "aliyun") if user.user_preferences else "aliyun"
|
||
|
||
existing_chapters = crud.list_audiobook_chapters(db, project_id)
|
||
existing_chapters_data = [
|
||
{"index": ch.chapter_index, "title": ch.title or f"第{ch.chapter_index + 1}章", "summary": ""}
|
||
for ch in existing_chapters
|
||
]
|
||
start_index = max((ch.chapter_index for ch in existing_chapters), default=-1) + 1
|
||
|
||
ps.append_line(key, f"[AI剧本] 续写 {additional_chapters} 章，从第 {start_index + 1} 章开始...\n")
|
||
ps.append_line(key, "")
|
||
|
||
new_chapters_data = await llm.generate_additional_chapter_outline(
|
||
genre=genre, subgenre=subgenre, premise=premise, style=style,
|
||
existing_chapters=existing_chapters_data, additional_chapters=additional_chapters,
|
||
characters=characters_data, usage_callback=_log_usage,
|
||
)
|
||
|
||
ps.append_line(key, f"\n\n[完成] 续写大纲：{len(new_chapters_data)} 章")
|
||
|
||
assigned = []
|
||
for offset, ch_data in enumerate(new_chapters_data):
|
||
idx = start_index + offset
|
||
title = ch_data.get("title", f"第 {idx + 1} 章")
|
||
summary = ch_data.get("summary", "")
|
||
crud.create_audiobook_chapter(db, project_id, idx, summary, title=title)
|
||
assigned.append((idx, title, summary))
|
||
|
||
ps.append_line(key, f"\n[Step 2] 逐章生成对话脚本...\n")
|
||
|
||
for idx, title, summary in assigned:
|
||
|
||
ps.append_line(key, f"\n第 {idx + 1} 章「{title}」→ ")
|
||
ps.append_line(key, "")
|
||
|
||
chapter_obj = crud.get_audiobook_chapter_by_index(db, project_id, idx)
|
||
if not chapter_obj:
|
||
continue
|
||
|
||
try:
|
||
script_text = await llm.generate_chapter_script(
|
||
genre=genre, premise=premise,
|
||
chapter_index=idx, chapter_title=title, chapter_summary=summary,
|
||
characters=characters_data, on_token=on_token, usage_callback=_log_usage,
|
||
)
|
||
|
||
chapter_obj.source_text = script_text
|
||
db.commit()
|
||
|
||
segments_data = parse_ai_script(script_text, char_map)
|
||
|
||
unknown_speakers = {
|
||
seg["character"] for seg in segments_data
|
||
if seg["character"] != "旁白" and seg["character"] not in char_map
|
||
}
|
||
for speaker_name in sorted(unknown_speakers):
|
||
try:
|
||
npc_instruct = (
|
||
"音色信息：普通自然的中性成年人声音，语调平和\n"
|
||
"身份背景：故事中的路人或配角\n"
|
||
"年龄设定：成年人\n"
|
||
"外貌特征：普通外貌\n"
|
||
"性格特质：平淡自然\n"
|
||
"叙事风格：语速正常，语气自然"
|
||
)
|
||
npc_voice = crud.create_voice_design(
|
||
db=db, user_id=user.id,
|
||
name=f"[有声书] {project.title} - {speaker_name}",
|
||
instruct=npc_instruct, backend_type=backend_type,
|
||
)
|
||
npc_char = crud.create_audiobook_character(
|
||
db=db, project_id=project_id, name=speaker_name,
|
||
description=f"配角：{speaker_name}",
|
||
instruct=npc_instruct, voice_design_id=npc_voice.id,
|
||
)
|
||
char_map[speaker_name] = npc_char
|
||
ps.append_line(key, f"\n[NPC] 自动创建配角：{speaker_name}")
|
||
except Exception as e:
|
||
logger.error(f"Failed to create NPC {speaker_name}: {e}")
|
||
|
||
crud.delete_audiobook_segments_for_chapter(db, project_id, idx)
|
||
|
||
seg_counter = 0
|
||
for seg in segments_data:
|
||
seg_text = seg.get("text", "").strip()
|
||
if not seg_text:
|
||
continue
|
||
char = char_map.get(seg.get("character", "旁白")) or char_map.get("旁白")
|
||
if not char:
|
||
continue
|
||
crud.create_audiobook_segment(
|
||
db, project_id, char.id, seg_text,
|
||
chapter_index=idx, segment_index=seg_counter,
|
||
emo_text=seg.get("emo_text"), emo_alpha=seg.get("emo_alpha"),
|
||
)
|
||
seg_counter += 1
|
||
|
||
crud.update_audiobook_chapter_status(db, chapter_obj.id, "ready")
|
||
ps.append_line(key, f"\n✓ {seg_counter} 段")
|
||
|
||
except Exception as e:
|
||
logger.error(f"Chapter {idx} script generation failed: {e}", exc_info=True)
|
||
ps.append_line(key, f"\n[错误] {e}")
|
||
crud.update_audiobook_chapter_status(db, chapter_obj.id, "error", error_message=str(e))
|
||
|
||
crud.update_audiobook_project_status(db, project_id, "ready")
|
||
ps.append_line(key, f"\n\n[完成] 续写 {len(assigned)} 章完毕，项目已就绪")
|
||
ps.mark_done(key)
|
||
logger.info(f"continue_ai_script_chapters complete for project {project_id}, added {len(assigned)} chapters")
|
||
|
||
except Exception as e:
|
||
logger.error(f"continue_ai_script_chapters failed for project {project_id}: {e}", exc_info=True)
|
||
ps.append_line(key, f"\n[错误] {e}")
|
||
ps.mark_done(key)
|
||
crud.update_audiobook_project_status(db, project_id, "error", error_message=str(e))
|
||
|
||
|
||
async def analyze_project(project_id: int, user: User, db: Session, turbo: bool = False) -> None:
|
||
project = db.query(AudiobookProject).filter(AudiobookProject.id == project_id).first()
|
||
if not project:
|
||
return
|
||
|
||
key = str(project_id)
|
||
ps.reset(key)
|
||
try:
|
||
crud.update_audiobook_project_status(db, project_id, "analyzing")
|
||
ps.append_line(key, f"[分析] 项目「{project.title}」开始角色分析")
|
||
|
||
llm = _get_llm_service(db)
|
||
_llm_model = crud.get_system_setting(db, "llm_model")
|
||
_user_id = user.id
|
||
|
||
def _log_analyze_usage(prompt_tokens: int, completion_tokens: int) -> None:
|
||
from db.database import SessionLocal
|
||
log_db = SessionLocal()
|
||
try:
|
||
crud.create_usage_log(log_db, _user_id, prompt_tokens, completion_tokens,
|
||
model=_llm_model, context="audiobook_analyze")
|
||
finally:
|
||
log_db.close()
|
||
|
||
if project.source_type == "epub" and project.source_path:
|
||
ps.append_line(key, "[解析] 正在提取 EPUB 章节内容...")
|
||
epub_chapters = _extract_epub_chapters(project.source_path)
|
||
if not epub_chapters:
|
||
raise ValueError("No text content extracted from epub.")
|
||
text = "\n\n".join(epub_chapters)
|
||
ps.append_line(key, f"[解析] 提取完成，共 {len(epub_chapters)} 章，{len(text)} 字")
|
||
project.source_text = text
|
||
db.commit()
|
||
else:
|
||
text = project.source_text or ""
|
||
|
||
if not text.strip():
|
||
raise ValueError("No text content found in project.")
|
||
|
||
samples = _sample_full_text(text)
|
||
n = len(samples)
|
||
|
||
project_audio_dir = Path(settings.OUTPUT_DIR) / "audiobook" / str(project_id)
|
||
for subdir in ("previews", "segments", "chapters"):
|
||
d = project_audio_dir / subdir
|
||
if d.exists():
|
||
try:
|
||
shutil.rmtree(d)
|
||
except Exception as e:
|
||
logger.warning(f"Failed to clear {subdir} directory: {e}")
|
||
full_path = project_audio_dir / "full.wav"
|
||
if full_path.exists():
|
||
full_path.unlink(missing_ok=True)
|
||
previews_dir = project_audio_dir / "previews"
|
||
previews_dir.mkdir(parents=True, exist_ok=True)
|
||
|
||
mode_label = "极速并发" if turbo else "顺序"
|
||
ps.append_line(key, f"\n[LLM] 模型：{user.llm_model}，共 {n} 个采样段（{mode_label}模式），正在分析角色...\n")
|
||
ps.append_line(key, "")
|
||
|
||
def on_token(token: str) -> None:
|
||
ps.append_token(key, token)
|
||
|
||
completed_count = 0
|
||
def on_sample(i: int, total: int) -> None:
|
||
nonlocal completed_count
|
||
completed_count += 1
|
||
if completed_count < total:
|
||
ps.append_line(key, f"\n[LLM] 采样段 {completed_count}/{total} 完成，继续分析...\n")
|
||
else:
|
||
ps.append_line(key, f"\n[LLM] 全部 {total} 个采样段完成，正在合并角色列表...\n")
|
||
ps.append_line(key, "")
|
||
|
||
characters_data = await llm.extract_characters(
|
||
samples,
|
||
on_token=on_token,
|
||
on_sample=on_sample,
|
||
turbo=turbo,
|
||
usage_callback=_log_analyze_usage,
|
||
)
|
||
|
||
has_narrator = any(c.get("name") in ("narrator", "旁白") for c in characters_data)
|
||
if not has_narrator:
|
||
characters_data.insert(0, {
|
||
"name": "旁白",
|
||
"gender": "未知",
|
||
"description": "第三人称旁白叙述者",
|
||
"instruct": (
|
||
"音色信息：浑厚醇厚的男性中低音，嗓音饱满有力，带有传统说书人的磁性与感染力\n"
|
||
"身份背景：中国传统说书艺人，精通评书、章回小说叙述艺术，深谙故事节奏与听众心理\n"
|
||
"年龄设定：中年男性，四五十岁，声音历经岁月沉淀，成熟稳重而不失活力\n"
|
||
"外貌特征：面容沉稳，气度从容，台风大气，给人以可信赖的叙述者印象\n"
|
||
"性格特质：沉稳睿智，叙事冷静客观，情到深处能引发共鸣，不动声色间娓娓道来\n"
|
||
"叙事风格：语速适中偏慢，抑扬顿挫，擅长铺垫悬念，停顿恰到好处，语气庄重而生动，富有画面感"
|
||
)
|
||
})
|
||
|
||
ps.append_line(key, f"\n\n[完成] 发现 {len(characters_data)} 个角色：{', '.join(c.get('name', '') for c in characters_data)}")
|
||
|
||
crud.delete_audiobook_segments(db, project_id)
|
||
crud.delete_audiobook_characters(db, project_id)
|
||
|
||
backend_type = user.user_preferences.get("default_backend", "aliyun") if user.user_preferences else "aliyun"
|
||
|
||
for char_data in characters_data:
|
||
name = char_data.get("name", "旁白")
|
||
if name == "narrator":
|
||
name = "旁白"
|
||
instruct = char_data.get("instruct", "")
|
||
description = char_data.get("description", "")
|
||
gender = char_data.get("gender") or ("未知" if name == "旁白" else None)
|
||
try:
|
||
voice_design = crud.create_voice_design(
|
||
db=db,
|
||
user_id=user.id,
|
||
name=f"[有声书] {project.title} - {name}",
|
||
instruct=instruct,
|
||
backend_type=backend_type,
|
||
preview_text=description[:100] if description else None,
|
||
)
|
||
crud.create_audiobook_character(
|
||
db=db,
|
||
project_id=project_id,
|
||
name=name,
|
||
gender=gender,
|
||
description=description,
|
||
instruct=instruct,
|
||
voice_design_id=voice_design.id,
|
||
)
|
||
except Exception as e:
|
||
logger.error(f"Failed to create char/voice for {name}: {e}")
|
||
|
||
crud.update_audiobook_project_status(db, project_id, "characters_ready")
|
||
ps.mark_done(key)
|
||
logger.info(f"Project {project_id} character extraction complete: {len(characters_data)} characters")
|
||
|
||
# Kick off background preview generation
|
||
import asyncio
|
||
from core.database import SessionLocal
|
||
|
||
user_id = user.id
|
||
|
||
async def _generate_all_previews():
|
||
# Get character IDs first using a temporary session
|
||
temp_db = SessionLocal()
|
||
try:
|
||
characters = crud.list_audiobook_characters(temp_db, project_id)
|
||
char_ids = [c.id for c in characters]
|
||
finally:
|
||
temp_db.close()
|
||
|
||
if not char_ids:
|
||
return
|
||
|
||
# Use a semaphore to limit concurrent TTS requests
|
||
sem = asyncio.Semaphore(3)
|
||
|
||
async def _gen(char_id: int):
|
||
async with sem:
|
||
# Each concurrent task MUST have its own dedicated session
|
||
local_db = SessionLocal()
|
||
try:
|
||
db_user = crud.get_user_by_id(local_db, user_id)
|
||
await generate_character_preview(project_id, char_id, db_user, local_db)
|
||
except Exception as e:
|
||
logger.error(f"Background preview generation failed for char {char_id}: {e}")
|
||
finally:
|
||
local_db.close()
|
||
|
||
tasks = [_gen(cid) for cid in char_ids]
|
||
await asyncio.gather(*tasks)
|
||
|
||
asyncio.create_task(_generate_all_previews())
|
||
|
||
except Exception as e:
|
||
logger.error(f"Analysis failed for project {project_id}: {e}", exc_info=True)
|
||
ps.append_line(key, f"\n[错误] {e}")
|
||
ps.mark_done(key)
|
||
crud.update_audiobook_project_status(db, project_id, "error", error_message=str(e))
|
||
|
||
|
||
def _get_chapter_title(text: str) -> str:
|
||
first_line = text.strip().split('\n')[0].strip()
|
||
return first_line[:80] if len(first_line) <= 80 else first_line[:77] + '...'
|
||
|
||
|
||
def identify_chapters(project_id: int, db, project) -> None:
|
||
if project.source_type == "epub" and project.source_path:
|
||
texts = _extract_epub_chapters(project.source_path)
|
||
else:
|
||
texts = _split_into_chapters(project.source_text or "")
|
||
|
||
crud.delete_audiobook_chapters(db, project_id)
|
||
crud.delete_audiobook_segments(db, project_id)
|
||
|
||
project_audio_dir = Path(settings.OUTPUT_DIR) / "audiobook" / str(project_id)
|
||
for subdir in ("segments", "chapters"):
|
||
d = project_audio_dir / subdir
|
||
if d.exists():
|
||
shutil.rmtree(d, ignore_errors=True)
|
||
full_path = project_audio_dir / "full.wav"
|
||
if full_path.exists():
|
||
full_path.unlink(missing_ok=True)
|
||
|
||
real_idx = 0
|
||
for text in texts:
|
||
if text.strip():
|
||
crud.create_audiobook_chapter(
|
||
db, project_id, real_idx, text.strip(),
|
||
title=_get_chapter_title(text),
|
||
)
|
||
real_idx += 1
|
||
|
||
crud.update_audiobook_project_status(db, project_id, "ready")
|
||
logger.info(f"Project {project_id} chapters identified: {real_idx} chapters")
|
||
|
||
|
||
async def parse_one_chapter(project_id: int, chapter_id: int, user: User, db) -> None:
|
||
chapter = crud.get_audiobook_chapter(db, chapter_id)
|
||
if not chapter:
|
||
return
|
||
|
||
key = f"ch_{chapter_id}"
|
||
ps.reset(key)
|
||
try:
|
||
crud.update_audiobook_chapter_status(db, chapter_id, "parsing")
|
||
|
||
llm = _get_llm_service(db)
|
||
_llm_model = crud.get_system_setting(db, "llm_model")
|
||
_user_id = user.id
|
||
|
||
def _log_parse_usage(prompt_tokens: int, completion_tokens: int) -> None:
|
||
from db.database import SessionLocal
|
||
log_db = SessionLocal()
|
||
try:
|
||
crud.create_usage_log(log_db, _user_id, prompt_tokens, completion_tokens,
|
||
model=_llm_model, context="audiobook_parse")
|
||
finally:
|
||
log_db.close()
|
||
|
||
characters = crud.list_audiobook_characters(db, project_id)
|
||
if not characters:
|
||
raise ValueError("No characters found. Please analyze the project first.")
|
||
|
||
char_map: dict[str, AudiobookCharacter] = {c.name: c for c in characters}
|
||
character_names = list(char_map.keys())
|
||
|
||
label = chapter.title or f"第 {chapter.chapter_index + 1} 章"
|
||
ps.append_line(key, f"[{label}] 开始解析 ({len(chapter.source_text)} 字)")
|
||
|
||
crud.delete_audiobook_segments_for_chapter(db, project_id, chapter.chapter_index)
|
||
|
||
segments_dir = Path(settings.OUTPUT_DIR) / "audiobook" / str(project_id) / "segments"
|
||
if segments_dir.exists():
|
||
chapter_prefix = f"ch{chapter.chapter_index:03d}_"
|
||
for f in segments_dir.glob(f"{chapter_prefix}*.wav"):
|
||
f.unlink(missing_ok=True)
|
||
chapter_audio = Path(settings.OUTPUT_DIR) / "audiobook" / str(project_id) / "chapters" / f"chapter_{chapter.chapter_index}.wav"
|
||
if chapter_audio.exists():
|
||
chapter_audio.unlink(missing_ok=True)
|
||
full_path = Path(settings.OUTPUT_DIR) / "audiobook" / str(project_id) / "full.wav"
|
||
if full_path.exists():
|
||
full_path.unlink(missing_ok=True)
|
||
|
||
chunks = _chunk_chapter(chapter.source_text, max_chars=1500)
|
||
ps.append_line(key, f"共 {len(chunks)} 块\n")
|
||
|
||
seg_counter = 0
|
||
failed_chunks = 0
|
||
last_error = ""
|
||
for i, chunk in enumerate(chunks):
|
||
ps.append_line(key, f"块 {i + 1}/{len(chunks)} → ")
|
||
ps.append_line(key, "")
|
||
|
||
def on_token(token: str) -> None:
|
||
ps.append_token(key, token)
|
||
|
||
try:
|
||
segments_data = await llm.parse_chapter_segments(chunk, character_names, on_token=on_token, usage_callback=_log_parse_usage)
|
||
except Exception as e:
|
||
logger.warning(f"Chapter {chapter_id} chunk {i} failed: {e}")
|
||
ps.append_line(key, f"\n[回退] {e}")
|
||
failed_chunks += 1
|
||
last_error = str(e)
|
||
narrator = char_map.get("旁白") or char_map.get("narrator")
|
||
if narrator:
|
||
crud.create_audiobook_segment(
|
||
db, project_id, narrator.id, chunk.strip(),
|
||
chapter.chapter_index, seg_counter,
|
||
)
|
||
seg_counter += 1
|
||
continue
|
||
|
||
chunk_count = 0
|
||
for seg in segments_data:
|
||
seg_text = seg.get("text", "").strip()
|
||
if not seg_text:
|
||
continue
|
||
char = char_map.get(seg.get("character", "旁白")) or char_map.get("旁白") or char_map.get("narrator")
|
||
if not char:
|
||
continue
|
||
seg_emo_text = seg.get("emo_text", "") or None
|
||
seg_emo_alpha = seg.get("emo_alpha") if seg_emo_text else None
|
||
crud.create_audiobook_segment(
|
||
db, project_id, char.id, seg_text,
|
||
chapter.chapter_index, seg_counter,
|
||
emo_text=seg_emo_text, emo_alpha=seg_emo_alpha,
|
||
)
|
||
seg_counter += 1
|
||
chunk_count += 1
|
||
|
||
ps.append_line(key, f"\n✓ {chunk_count} 段")
|
||
|
||
if failed_chunks == len(chunks):
|
||
# All chunks failed — mark chapter as error, remove fallback segments
|
||
crud.delete_audiobook_segments_for_chapter(db, project_id, chapter.chapter_index)
|
||
error_msg = f"所有 {len(chunks)} 个块均解析失败: {last_error}"
|
||
ps.append_line(key, f"\n[错误] {error_msg}")
|
||
crud.update_audiobook_chapter_status(db, chapter_id, "error", error_message=error_msg)
|
||
elif failed_chunks > 0:
|
||
ps.append_line(key, f"\n[完成] 共 {seg_counter} 段（{failed_chunks}/{len(chunks)} 块回退到旁白）")
|
||
crud.update_audiobook_chapter_status(db, chapter_id, "ready")
|
||
else:
|
||
ps.append_line(key, f"\n[完成] 共 {seg_counter} 段")
|
||
crud.update_audiobook_chapter_status(db, chapter_id, "ready")
|
||
ps.mark_done(key)
|
||
logger.info(f"Chapter {chapter_id} parsed: {seg_counter} segments")
|
||
|
||
except Exception as e:
|
||
logger.error(f"parse_one_chapter {chapter_id} failed: {e}", exc_info=True)
|
||
ps.append_line(key, f"\n[错误] {e}")
|
||
ps.mark_done(key)
|
||
crud.update_audiobook_chapter_status(db, chapter_id, "error", error_message=str(e))
|
||
|
||
|
||
async def _bootstrap_character_voices(segments, user, backend, backend_type: str, db: Session) -> None:
|
||
pass
|
||
|
||
|
||
async def generate_project(project_id: int, user: User, db: Session, chapter_index: Optional[int] = None, cancel_event: Optional[asyncio.Event] = None, force: bool = False) -> None:
|
||
project = db.query(AudiobookProject).filter(AudiobookProject.id == project_id).first()
|
||
if not project:
|
||
return
|
||
|
||
# Resolve cancel event: use explicit one (from batch), or create a fresh one for this run
|
||
if cancel_event is None:
|
||
cancel_event = asyncio.Event()
|
||
_cancel_events[project_id] = cancel_event
|
||
|
||
try:
|
||
if chapter_index is None:
|
||
crud.update_audiobook_project_status(db, project_id, "generating")
|
||
|
||
segments = crud.list_audiobook_segments(db, project_id, chapter_index=chapter_index)
|
||
if force:
|
||
for s in segments:
|
||
if s.status == "done":
|
||
crud.update_audiobook_segment_status(db, s.id, "pending")
|
||
segments = crud.list_audiobook_segments(db, project_id, chapter_index=chapter_index)
|
||
pending_segments = [s for s in segments if s.status in ("pending", "error")]
|
||
if not pending_segments:
|
||
if chapter_index is None:
|
||
all_segs = crud.list_audiobook_segments(db, project_id)
|
||
if all_segs and all(s.status == "done" for s in all_segs):
|
||
crud.update_audiobook_project_status(db, project_id, "done")
|
||
else:
|
||
crud.update_audiobook_project_status(db, project_id, "ready")
|
||
return
|
||
segments = pending_segments
|
||
|
||
output_base = Path(settings.OUTPUT_DIR) / "audiobook" / str(project_id) / "segments"
|
||
output_base.mkdir(parents=True, exist_ok=True)
|
||
|
||
from core.tts_service import IndexTTS2Backend
|
||
|
||
for seg in segments:
|
||
if cancel_event and cancel_event.is_set():
|
||
logger.info(f"Generation cancelled for project {project_id}, stopping at segment {seg.id}")
|
||
break
|
||
|
||
try:
|
||
crud.update_audiobook_segment_status(db, seg.id, "generating")
|
||
|
||
char = crud.get_audiobook_character(db, seg.character_id)
|
||
if not char or not char.voice_design_id:
|
||
crud.update_audiobook_segment_status(db, seg.id, "error")
|
||
continue
|
||
|
||
design = crud.get_voice_design(db, char.voice_design_id, user.id)
|
||
if not design:
|
||
crud.update_audiobook_segment_status(db, seg.id, "error")
|
||
continue
|
||
|
||
audio_filename = f"ch{seg.chapter_index:03d}_seg{seg.segment_index:04d}.wav"
|
||
audio_path = output_base / audio_filename
|
||
|
||
ref_audio = design.ref_audio_path
|
||
if not ref_audio or not Path(ref_audio).exists():
|
||
preview_path = Path(settings.OUTPUT_DIR) / "audiobook" / str(project_id) / "previews" / f"char_{char.id}.wav"
|
||
if preview_path.exists():
|
||
ref_audio = str(preview_path)
|
||
|
||
if not ref_audio or not Path(ref_audio).exists():
|
||
logger.info(f"No ref audio for char {char.id}, generating preview on-demand...")
|
||
try:
|
||
await generate_character_preview(project_id, char.id, user, db)
|
||
db.refresh(design)
|
||
ref_audio = design.ref_audio_path
|
||
if not ref_audio or not Path(ref_audio).exists():
|
||
preview_path = Path(settings.OUTPUT_DIR) / "audiobook" / str(project_id) / "previews" / f"char_{char.id}.wav"
|
||
if preview_path.exists():
|
||
ref_audio = str(preview_path)
|
||
except Exception as prev_e:
|
||
logger.error(f"On-demand preview generation failed for char {char.id}: {prev_e}")
|
||
|
||
if not ref_audio or not Path(ref_audio).exists():
|
||
logger.error(f"No ref audio for char {char.id}, skipping segment {seg.id}")
|
||
crud.update_audiobook_segment_status(db, seg.id, "error")
|
||
continue
|
||
|
||
indextts2 = IndexTTS2Backend()
|
||
audio_bytes = await indextts2.generate(
|
||
text=seg.text,
|
||
spk_audio_prompt=ref_audio,
|
||
output_path=str(audio_path),
|
||
emo_text=seg.emo_text or None,
|
||
emo_alpha=seg.emo_alpha if seg.emo_alpha is not None else 0.3,
|
||
)
|
||
|
||
with open(audio_path, "wb") as f:
|
||
f.write(audio_bytes)
|
||
|
||
crud.update_audiobook_segment_status(db, seg.id, "done", audio_path=str(audio_path))
|
||
logger.info(f"Segment {seg.id} generated: {audio_path}")
|
||
|
||
except Exception as e:
|
||
logger.error(f"Segment {seg.id} generation failed: {e}", exc_info=True)
|
||
crud.update_audiobook_segment_status(db, seg.id, "error")
|
||
|
||
# Update chapter status to "done" if all its segments are complete
|
||
if chapter_index is not None:
|
||
ch_segs = crud.list_audiobook_segments(db, project_id, chapter_index=chapter_index)
|
||
if ch_segs and all(s.status == "done" for s in ch_segs):
|
||
from db.models import AudiobookChapter
|
||
chapter_obj = db.query(AudiobookChapter).filter(
|
||
AudiobookChapter.project_id == project_id,
|
||
AudiobookChapter.chapter_index == chapter_index,
|
||
).first()
|
||
if chapter_obj:
|
||
crud.update_audiobook_chapter_status(db, chapter_obj.id, "done")
|
||
|
||
all_segs = crud.list_audiobook_segments(db, project_id)
|
||
all_done = all(s.status == "done" for s in all_segs) if all_segs else False
|
||
if all_done:
|
||
crud.update_audiobook_project_status(db, project_id, "done")
|
||
elif chapter_index is None:
|
||
crud.update_audiobook_project_status(db, project_id, "ready")
|
||
logger.info(f"Project {project_id} generation complete (chapter={chapter_index})")
|
||
|
||
except Exception as e:
|
||
logger.error(f"Generation failed for project {project_id}: {e}", exc_info=True)
|
||
if chapter_index is None:
|
||
crud.update_audiobook_project_status(db, project_id, "error", error_message=str(e))
|
||
|
||
|
||
async def generate_single_segment(segment_id: int, user: User, db: Session) -> None:
|
||
from db.models import AudiobookSegment as _Seg
|
||
seg = db.query(_Seg).filter(_Seg.id == segment_id).first()
|
||
if not seg:
|
||
return
|
||
|
||
output_base = Path(settings.OUTPUT_DIR) / "audiobook" / str(seg.project_id) / "segments"
|
||
output_base.mkdir(parents=True, exist_ok=True)
|
||
|
||
crud.update_audiobook_segment_status(db, segment_id, "generating")
|
||
try:
|
||
from core.tts_service import IndexTTS2Backend
|
||
|
||
char = crud.get_audiobook_character(db, seg.character_id)
|
||
if not char or not char.voice_design_id:
|
||
crud.update_audiobook_segment_status(db, segment_id, "error")
|
||
return
|
||
|
||
design = crud.get_voice_design(db, char.voice_design_id, user.id)
|
||
if not design:
|
||
crud.update_audiobook_segment_status(db, segment_id, "error")
|
||
return
|
||
|
||
audio_filename = f"ch{seg.chapter_index:03d}_seg{seg.segment_index:04d}.wav"
|
||
audio_path = output_base / audio_filename
|
||
|
||
ref_audio = design.ref_audio_path
|
||
if not ref_audio or not Path(ref_audio).exists():
|
||
preview_path = Path(settings.OUTPUT_DIR) / "audiobook" / str(seg.project_id) / "previews" / f"char_{char.id}.wav"
|
||
if preview_path.exists():
|
||
ref_audio = str(preview_path)
|
||
|
||
if not ref_audio or not Path(ref_audio).exists():
|
||
logger.error(f"No ref audio for char {char.id}, skipping segment {segment_id}")
|
||
crud.update_audiobook_segment_status(db, segment_id, "error")
|
||
return
|
||
|
||
indextts2 = IndexTTS2Backend()
|
||
audio_bytes = await indextts2.generate(
|
||
text=seg.text,
|
||
spk_audio_prompt=ref_audio,
|
||
output_path=str(audio_path),
|
||
emo_text=seg.emo_text or None,
|
||
emo_alpha=seg.emo_alpha if seg.emo_alpha is not None else 0.3,
|
||
)
|
||
|
||
with open(audio_path, "wb") as f:
|
||
f.write(audio_bytes)
|
||
|
||
crud.update_audiobook_segment_status(db, segment_id, "done", audio_path=str(audio_path))
|
||
logger.info(f"Single segment {segment_id} generated: {audio_path}")
|
||
|
||
except Exception as e:
|
||
logger.error(f"Single segment {segment_id} generation failed: {e}", exc_info=True)
|
||
crud.update_audiobook_segment_status(db, segment_id, "error")
|
||
|
||
|
||
def merge_audio_files(audio_paths: list[str], output_path: str) -> None:
|
||
from pydub import AudioSegment
|
||
|
||
combined = None
|
||
silence = AudioSegment.silent(duration=300)
|
||
for path in audio_paths:
|
||
if not Path(path).exists():
|
||
continue
|
||
seg = AudioSegment.from_file(path)
|
||
combined = combined + silence + seg if combined else seg
|
||
|
||
if combined:
|
||
Path(output_path).parent.mkdir(parents=True, exist_ok=True)
|
||
combined.export(output_path, format="wav")
|
||
|
||
|
||
async def parse_all_chapters(project_id: int, user: User, db: Session, statuses: tuple = ("pending", "error")) -> None:
|
||
"""Concurrently parse chapters with matching statuses using asyncio.Semaphore."""
|
||
from core.database import SessionLocal
|
||
|
||
chapters = crud.list_audiobook_chapters(db, project_id)
|
||
pending = [ch for ch in chapters if ch.status in statuses]
|
||
if not pending:
|
||
return
|
||
|
||
cancel_ev = asyncio.Event()
|
||
_cancel_events[project_id] = cancel_ev
|
||
|
||
max_concurrent = settings.AUDIOBOOK_PARSE_CONCURRENCY
|
||
semaphore = asyncio.Semaphore(max_concurrent)
|
||
logger.info(f"parse_all_chapters: project={project_id}, {len(pending)} chapters, concurrency={max_concurrent}")
|
||
|
||
key = f"project_{project_id}"
|
||
ps.append_line(key, f"\n[状态] 开启章节并发解析，共 {len(pending)} 章待处理，最大并发: {max_concurrent}...\n")
|
||
|
||
async def parse_with_limit(chapter):
|
||
if cancel_ev.is_set():
|
||
return
|
||
async with semaphore:
|
||
if cancel_ev.is_set():
|
||
return
|
||
task_db = SessionLocal()
|
||
try:
|
||
db_user = crud.get_user_by_id(task_db, user.id)
|
||
await parse_one_chapter(project_id, chapter.id, db_user, task_db)
|
||
except Exception as e:
|
||
logger.error(f"parse_all_chapters: chapter {chapter.id} failed: {e}", exc_info=True)
|
||
finally:
|
||
task_db.close()
|
||
|
||
await asyncio.gather(*[parse_with_limit(ch) for ch in pending])
|
||
_cancel_events.pop(project_id, None)
|
||
|
||
if cancel_ev.is_set():
|
||
ps.append_line(key, f"\n[状态] 章节批量解析被用户取消\n")
|
||
else:
|
||
ps.append_line(key, f"\n[状态] 所有章节批量解析已完成\n")
|
||
|
||
logger.info(f"parse_all_chapters: project={project_id} {'cancelled' if cancel_ev.is_set() else 'complete'}")
|
||
|
||
|
||
async def generate_all_chapters(project_id: int, user: User, db: Session) -> None:
|
||
"""Concurrently generate audio for all ready chapters using asyncio.Semaphore."""
|
||
from core.database import SessionLocal
|
||
|
||
chapters = crud.list_audiobook_chapters(db, project_id)
|
||
ready = [ch for ch in chapters if ch.status == "ready"]
|
||
if not ready:
|
||
return
|
||
|
||
cancel_ev = _cancel_events.get(project_id)
|
||
if not cancel_ev:
|
||
cancel_ev = asyncio.Event()
|
||
_cancel_events[project_id] = cancel_ev
|
||
|
||
crud.update_audiobook_project_status(db, project_id, "generating")
|
||
|
||
max_concurrent = settings.AUDIOBOOK_GENERATE_CONCURRENCY
|
||
semaphore = asyncio.Semaphore(max_concurrent)
|
||
logger.info(f"generate_all_chapters: project={project_id}, {len(ready)} chapters, concurrency={max_concurrent}")
|
||
|
||
async def generate_with_limit(chapter):
|
||
if cancel_ev.is_set():
|
||
return
|
||
async with semaphore:
|
||
if cancel_ev.is_set():
|
||
return
|
||
task_db = SessionLocal()
|
||
try:
|
||
db_user = crud.get_user_by_id(task_db, user.id)
|
||
await generate_project(project_id, db_user, task_db, chapter_index=chapter.chapter_index, cancel_event=cancel_ev)
|
||
except Exception as e:
|
||
logger.error(f"generate_all_chapters: chapter {chapter.chapter_index} failed: {e}", exc_info=True)
|
||
finally:
|
||
task_db.close()
|
||
|
||
await asyncio.gather(*[generate_with_limit(ch) for ch in ready])
|
||
|
||
# Check final project status
|
||
final_db = SessionLocal()
|
||
try:
|
||
all_segs = crud.list_audiobook_segments(final_db, project_id)
|
||
all_done = all(s.status == "done" for s in all_segs) if all_segs else False
|
||
if all_done:
|
||
crud.update_audiobook_project_status(final_db, project_id, "done")
|
||
else:
|
||
crud.update_audiobook_project_status(final_db, project_id, "ready")
|
||
finally:
|
||
final_db.close()
|
||
|
||
_cancel_events.pop(project_id, None)
|
||
logger.info(f"generate_all_chapters: project={project_id} {'cancelled' if cancel_ev.is_set() else 'complete'}")
|
||
|
||
|
||
async def process_all(project_id: int, user: User, db: Session) -> None:
|
||
"""Parse all pending chapters, then generate all ready chapters — both with concurrency."""
|
||
from core.database import SessionLocal
|
||
|
||
# Phase 1: parse all pending chapters concurrently
|
||
await parse_all_chapters(project_id, user, db)
|
||
|
||
# Phase 2: reload chapters and generate all ready ones concurrently
|
||
phase2_db = SessionLocal()
|
||
try:
|
||
await generate_all_chapters(project_id, user, phase2_db)
|
||
finally:
|
||
phase2_db.close()
|
||
|
||
logger.info(f"process_all: project={project_id} complete")
|
||
|
||
|
||
async def generate_character_preview(project_id: int, char_id: int, user: User, db: Session) -> None:
|
||
"""Generate a short audio preview for a specific character."""
|
||
project = crud.get_audiobook_project(db, project_id, user.id)
|
||
if not project:
|
||
raise ValueError("Project not found")
|
||
|
||
char = crud.get_audiobook_character(db, char_id)
|
||
if not char or char.project_id != project_id:
|
||
raise ValueError("Character not found or doesn't belong to this project")
|
||
|
||
if not char.voice_design_id:
|
||
raise ValueError("Character has no associated voice design")
|
||
|
||
design = crud.get_voice_design(db, char.voice_design_id, user.id)
|
||
if not design:
|
||
raise ValueError("Voice design not found")
|
||
|
||
output_base = Path(settings.OUTPUT_DIR) / "audiobook" / str(project_id) / "previews"
|
||
output_base.mkdir(parents=True, exist_ok=True)
|
||
audio_path = output_base / f"char_{char_id}.wav"
|
||
|
||
preview_name = char.name
|
||
|
||
preview_desc = ""
|
||
if char.description:
|
||
# Take a short snippet of description to make it sound natural
|
||
preview_desc = "，" + char.description[:30].replace('\n', '，')
|
||
if not preview_desc.endswith('。') and not preview_desc.endswith('！'):
|
||
preview_desc += "。"
|
||
|
||
preview_text = f"你好，我是{preview_name}{preview_desc}"
|
||
|
||
from core.tts_service import TTSServiceFactory
|
||
from core.security import decrypt_api_key
|
||
|
||
backend_type = user.user_preferences.get("default_backend", "aliyun") if user.user_preferences else "aliyun"
|
||
user_api_key = None
|
||
if backend_type == "aliyun":
|
||
encrypted = crud.get_system_setting(db, "aliyun_api_key")
|
||
if encrypted:
|
||
user_api_key = decrypt_api_key(encrypted)
|
||
elif user.aliyun_api_key:
|
||
user_api_key = decrypt_api_key(user.aliyun_api_key)
|
||
|
||
backend = await TTSServiceFactory.get_backend(backend_type, user_api_key)
|
||
|
||
try:
|
||
if backend_type == "local" and not design.voice_cache_id:
|
||
logger.info(f"Local voice cache missing for char {char_id}. Bootstrapping now...")
|
||
from core.model_manager import ModelManager
|
||
from core.cache_manager import VoiceCacheManager
|
||
from utils.audio import process_ref_audio
|
||
import hashlib
|
||
|
||
ref_text = "你好，这是参考音频。"
|
||
ref_audio_bytes, _ = await backend.generate_voice_design({
|
||
"text": ref_text,
|
||
"language": "Auto",
|
||
"instruct": design.instruct or "",
|
||
"max_new_tokens": 512,
|
||
"temperature": 0.3,
|
||
"top_k": 10,
|
||
"top_p": 0.9,
|
||
"repetition_penalty": 1.05,
|
||
})
|
||
|
||
model_manager = await ModelManager.get_instance()
|
||
await model_manager.load_model("base")
|
||
_, tts = await model_manager.get_current_model()
|
||
|
||
ref_audio_array, ref_sr = process_ref_audio(ref_audio_bytes)
|
||
x_vector = tts.create_voice_clone_prompt(
|
||
ref_audio=(ref_audio_array, ref_sr),
|
||
ref_text=ref_text,
|
||
)
|
||
|
||
cache_manager = await VoiceCacheManager.get_instance()
|
||
ref_audio_hash = hashlib.sha256(ref_audio_bytes).hexdigest()
|
||
cache_id = await cache_manager.set_cache(
|
||
user.id, ref_audio_hash, x_vector,
|
||
{"ref_text": ref_text, "instruct": design.instruct},
|
||
db
|
||
)
|
||
design.voice_cache_id = cache_id
|
||
db.commit()
|
||
logger.info(f"Bootstrapped local voice cache for preview: design_id={design.id}, cache_id={cache_id}")
|
||
|
||
if backend_type == "aliyun" and not design.aliyun_voice_id:
|
||
from core.tts_service import AliyunTTSBackend
|
||
if isinstance(backend, AliyunTTSBackend):
|
||
try:
|
||
voice_id = await backend._create_voice_design(
|
||
instruct=_get_gendered_instruct(char.gender, design.instruct),
|
||
preview_text=preview_text,
|
||
)
|
||
design.aliyun_voice_id = voice_id
|
||
db.commit()
|
||
logger.info(f"Bootstrapped aliyun voice_id for preview: design_id={design.id}, voice_id={voice_id}")
|
||
except Exception as e:
|
||
logger.warning(f"Failed to bootstrap aliyun voice_id for preview, falling back to instruct: {e}")
|
||
|
||
if backend_type == "aliyun":
|
||
if design.aliyun_voice_id:
|
||
audio_bytes, _ = await backend.generate_voice_design(
|
||
{"text": preview_text, "language": "zh"},
|
||
saved_voice_id=design.aliyun_voice_id
|
||
)
|
||
else:
|
||
audio_bytes, _ = await backend.generate_voice_design({
|
||
"text": preview_text,
|
||
"language": "zh",
|
||
"instruct": _get_gendered_instruct(char.gender, design.instruct),
|
||
})
|
||
else:
|
||
if design.voice_cache_id:
|
||
from core.cache_manager import VoiceCacheManager
|
||
cache_manager = await VoiceCacheManager.get_instance()
|
||
cache_result = await cache_manager.get_cache_by_id(design.voice_cache_id, db)
|
||
x_vector = cache_result['data'] if cache_result else None
|
||
if x_vector:
|
||
audio_bytes, _ = await backend.generate_voice_clone(
|
||
{
|
||
"text": preview_text,
|
||
"language": "Auto",
|
||
"max_new_tokens": 512,
|
||
"temperature": 0.3,
|
||
"top_k": 10,
|
||
"top_p": 0.9,
|
||
"repetition_penalty": 1.05,
|
||
},
|
||
x_vector=x_vector
|
||
)
|
||
else:
|
||
audio_bytes, _ = await backend.generate_voice_design({
|
||
"text": preview_text,
|
||
"language": "Auto",
|
||
"instruct": _get_gendered_instruct(char.gender, design.instruct),
|
||
"max_new_tokens": 512,
|
||
"temperature": 0.3,
|
||
"top_k": 10,
|
||
"top_p": 0.9,
|
||
"repetition_penalty": 1.05,
|
||
})
|
||
else:
|
||
audio_bytes, _ = await backend.generate_voice_design({
|
||
"text": preview_text,
|
||
"language": "Auto",
|
||
"instruct": design.instruct,
|
||
"max_new_tokens": 512,
|
||
"temperature": 0.3,
|
||
"top_k": 10,
|
||
"top_p": 0.9,
|
||
"repetition_penalty": 1.05,
|
||
})
|
||
|
||
with open(audio_path, "wb") as f:
|
||
f.write(audio_bytes)
|
||
|
||
design.ref_audio_path = str(audio_path)
|
||
db.commit()
|
||
logger.info(f"Preview generated for char {char_id}: {audio_path}")
|
||
except Exception as e:
|
||
logger.error(f"Failed to generate preview for char {char_id}: {e}")
|
||
raise
|