287 lines
10 KiB
Python
287 lines
10 KiB
Python
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# coding: utf-8
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import os
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import subprocess
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import tempfile
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from loguru import logger
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from PyQt6.QtCore import QEventLoop, QObject, QThread, pyqtSignal
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from PyQt6.QtCore import QUrl
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from PyQt6.QtMultimedia import QAudioOutput, QMediaPlayer
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class LocalTextToSpeechThread(QThread):
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"""本地文本转语音播放线程 - Windows优化版"""
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# 信号定义
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playback_started = pyqtSignal() # 播放开始
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playback_finished = pyqtSignal() # 播放完成
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playback_error = pyqtSignal(str) # 播放错误
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progress_updated = pyqtSignal(int) # 播放进度更新
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synthesis_completed = pyqtSignal(str) # 语音合成完成（返回文件路径）
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def __init__(self, text, parent=None):
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super().__init__(parent)
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self.text = text
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self.audio_file_path = None
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self.media_player = None
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self.audio_output = None
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self._stop_requested = False
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def run(self):
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"""线程执行函数"""
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try:
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# 1. 将文本转换为语音文件
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self.audio_file_path = self._text_to_speech(self.text)
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if not self.audio_file_path or self._stop_requested:
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return
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# 发射合成完成信号
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self.synthesis_completed.emit(self.audio_file_path)
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# 2. 播放语音
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self._play_audio(self.audio_file_path)
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except Exception as e:
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self.playback_error.emit(f"语音播放错误: {str(e)}")
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def _text_to_speech(self, text):
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"""使用本地TTS引擎将文本转换为语音文件"""
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try:
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# 检查文本长度
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if not text or len(text.strip()) == 0:
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self.playback_error.emit("文本内容为空")
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return None
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# 限制文本长度，避免合成时间过长
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max_length = 1000
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if len(text) > max_length:
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text = text[:max_length] + "。文本过长，已截断。"
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self.playback_error.emit(f"文本过长，已截断前{max_length}个字符")
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# 优先使用pyttsx3，效率最高
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try:
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import pyttsx3
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return self._pyttsx3_tts(text)
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except ImportError:
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# 备用方案：使用Windows内置TTS
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return self._windows_tts(text)
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except Exception as e:
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self.playback_error.emit(f"语音合成失败: {str(e)}")
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return None
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def _pyttsx3_tts(self, text):
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"""使用pyttsx3合成语音 - 优化版"""
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try:
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import pyttsx3
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# 初始化TTS引擎
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engine = pyttsx3.init()
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# 设置语音属性 - 提高效率
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engine.setProperty('rate', 200) # 提高语速
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engine.setProperty('volume', 0.9) # 提高音量
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# 创建临时文件保存音频
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with tempfile.NamedTemporaryFile(delete=False, suffix='.wav') as temp_file:
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temp_path = temp_file.name
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# 保存语音到文件
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engine.save_to_file(text, temp_path)
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engine.runAndWait()
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# 检查文件是否成功创建
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if os.path.exists(temp_path) and os.path.getsize(temp_path) > 0:
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return temp_path
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else:
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logger.error("语音文件生成失败")
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except Exception as e:
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# 如果pyttsx3失败，尝试Windows TTS
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return self._windows_tts(text)
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def _windows_tts(self, text):
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"""Windows系统TTS - 优化版"""
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try:
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# 方法1: 使用PowerShell命令 - 最可靠
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return self._powershell_tts(text)
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except Exception as e:
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logger.error(f"Windows TTS失败: {str(e)}")
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def _powershell_tts(self, text):
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"""使用PowerShell合成语音 - 优化版"""
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try:
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# 创建临时文件
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with tempfile.NamedTemporaryFile(delete=False, suffix='.wav') as temp_file:
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temp_path = temp_file.name
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# 转义文本中的特殊字符
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escaped_text = text.replace('"', '`"').replace("'", "`'")
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# 使用PowerShell的SpeechSynthesizer - 简化命令
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ps_script = f"""
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Add-Type -AssemblyName System.Speech
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$speak = New-Object System.Speech.Synthesis.SpeechSynthesizer
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$speak.SetOutputToWaveFile("{temp_path}")
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$speak.Speak("{escaped_text}")
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$speak.Dispose()
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"""
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# 使用更高效的方式执行PowerShell
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process = subprocess.Popen(
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["powershell", "-Command", ps_script],
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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shell=True
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)
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# 等待进程完成，设置超时
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try:
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stdout, stderr = process.communicate(timeout=30)
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if process.returncode != 0:
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logger.error(f"PowerShell执行失败: {stderr.decode('gbk', errors='ignore')}")
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except subprocess.TimeoutExpired:
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process.kill()
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logger.error(f"PowerShell超时")
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if os.path.exists(temp_path) and os.path.getsize(temp_path) > 0:
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return temp_path
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else:
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logger.error("语音文件生成失败")
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except Exception as e:
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# raise Exception(f"PowerShell TTS失败: {str(e)}")
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logger.error(f"PowerShell TTS失败{e}")
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def _play_audio(self, file_path):
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"""播放音频文件 - 优化版"""
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if self._stop_requested:
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return
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try:
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# 创建媒体播放器和音频输出
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self.media_player = QMediaPlayer()
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self.audio_output = QAudioOutput()
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self.media_player.setAudioOutput(self.audio_output)
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# 设置音量
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self.audio_output.setVolume(1.0)
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# 连接信号
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self.media_player.playbackStateChanged.connect(self._on_playback_state_changed)
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self.media_player.positionChanged.connect(self._on_position_changed)
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self.media_player.durationChanged.connect(self._on_duration_changed)
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self.media_player.errorOccurred.connect(self._on_player_error)
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# 设置媒体源并开始播放
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self.media_player.setSource(QUrl.fromLocalFile(file_path))
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self.media_player.play()
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# 使用事件循环等待播放完成
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loop = QEventLoop()
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self.media_player.playbackStateChanged.connect(
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lambda state: loop.quit() if state == QMediaPlayer.PlaybackState.StoppedState else None
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)
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loop.exec()
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except Exception as e:
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raise Exception(f"音频播放失败: {str(e)}")
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finally:
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# 清理临时文件
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if file_path and os.path.exists(file_path):
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try:
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os.unlink(file_path)
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except:
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pass
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def _on_playback_state_changed(self, state):
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"""处理播放状态变化"""
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from PyQt6.QtMultimedia import QMediaPlayer
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if state == QMediaPlayer.PlaybackState.StoppedState:
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self.playback_finished.emit()
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def _on_position_changed(self, position):
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"""处理播放位置变化"""
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if (self.media_player and
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self.media_player.duration() > 0):
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progress = int((position / self.media_player.duration()) * 100)
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self.progress_updated.emit(progress)
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def _on_duration_changed(self, duration):
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"""处理时长变化"""
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if duration > 0:
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self.playback_started.emit()
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def _on_player_error(self, error, error_string):
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"""处理播放器错误"""
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self.playback_error.emit(f"播放器错误: {error_string}")
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def stop_playback(self):
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"""停止播放"""
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self._stop_requested = True
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if self.media_player and self.media_player.playbackState() != QMediaPlayer.PlaybackState.StoppedState:
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self.media_player.stop()
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# 清理临时文件
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if self.audio_file_path and os.path.exists(self.audio_file_path):
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try:
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os.unlink(self.audio_file_path)
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except:
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pass
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class LocalSpeechController(QObject):
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"""本地语音播放控制器"""
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def __init__(self, parent=None):
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super().__init__(parent)
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self.speech_thread = None
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def play_text(self, text):
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"""播放文本语音"""
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# 停止当前播放
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self.stop_playback()
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# 创建新的语音线程
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self.speech_thread = LocalTextToSpeechThread(text)
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# 连接信号
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self.speech_thread.playback_started.connect(self._on_playback_started)
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self.speech_thread.playback_finished.connect(self._on_playback_finished)
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self.speech_thread.playback_error.connect(self._on_playback_error)
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self.speech_thread.progress_updated.connect(self._on_progress_updated)
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self.speech_thread.synthesis_completed.connect(self._on_synthesis_completed)
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# 开始播放
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self.speech_thread.start()
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def stop_playback(self):
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"""停止播放"""
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if self.speech_thread and self.speech_thread.isRunning():
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self.speech_thread.stop_playback()
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self.speech_thread.wait(1000) # 等待线程结束，最多1秒
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def is_playing(self):
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"""检查是否正在播放"""
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return self.speech_thread and self.speech_thread.isRunning()
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def _on_playback_started(self):
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"""处理播放开始"""
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logger.info("语音播放开始")
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def _on_playback_finished(self):
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"""处理播放完成"""
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logger.success("语音播放完成")
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def _on_playback_error(self, error_msg):
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"""处理播放错误"""
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logger.warning(f"语音播放错误: {error_msg}")
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def _on_progress_updated(self, progress):
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...
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def _on_synthesis_completed(self, file_path):
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"""处理语音合成完成"""
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logger.info(f"语音合成完成，文件路径: {file_path}")
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