class SimpleAudioRecorder(QAudioRecorder):
def __init__(self, data: ConverterData, transcription: Transcription,
app_settings: AppSettings) -> None:
super().__init__()
self.app_settings = app_settings
self.temp = data.get_temp_file()
self.transcription = transcription
self.file_path = os.path.join(self.temp,
f'{self.transcription.id}.wav')
self.settings = QAudioEncoderSettings()
def start_recording(self) -> None:
LOG_RECORDER.info("Audio recording started.")
self.settings.setCodec('audio/pcm')
self.settings.setChannelCount(1)
self.settings.setBitRate(96000)
self.settings.setSampleRate(44100)
self.settings.setQuality(self.app_settings.audio_quality)
self.settings.setEncodingMode(QMultimedia.ConstantQualityEncoding)
container = 'audio/x-wav'
self.setEncodingSettings(self.settings, QVideoEncoderSettings(),
container)
self.setOutputLocation(QUrl.fromLocalFile(self.file_path))
self.record()
def stop_recording(self) -> Union[str, None]:
LOG_RECORDER.info("Audio recording finished.")
LOG_RECORDER.info(f"Audio file: {self.file_path}")
self.stop()
return self.file_path
def __setRecordParams(self): ##设置音频输入参数
selectedFile = self.ui.editOutputFile.text().strip()
if (selectedFile == ""):
QMessageBox.critical(self, "错误", "请先设置录音输出文件")
return False
if os.path.exists(selectedFile):
os.remove(selectedFile) # 删除已有文件
## QMessageBox.critical(self,"错误","录音输出文件被占用，无法删除")
## return False
recordFile = QUrl.fromLocalFile(selectedFile)
self.recorder.setOutputLocation(recordFile) # 设置输出文件
recordDevice = self.ui.comboDevices.currentText()
self.recorder.setAudioInput(recordDevice) # 设置录入设备
settings = QAudioEncoderSettings() # 音频编码设置
settings.setCodec(self.ui.comboCodec.currentText()) # 编码
sampRate = int(self.ui.comboSampleRate.currentText())
settings.setSampleRate(sampRate) # 采样率
channelCount = int(self.ui.comboChannels.currentText())
settings.setChannelCount(channelCount) # 通道数
settings.setEncodingMode(QMultimedia.ConstantBitRateEncoding) # 固定比特率
self.recorder.setAudioSettings(settings) # 音频设置
return True
def __setRecordParams(self): ##设置音频输入参数
selectedFile = self.ui.editOutputFile.text().strip()
if (selectedFile == ""):
QMessageBox.critical(self, "错误", "请先设置录音输出文件")
return False
if os.path.exists(selectedFile):
os.remove(selectedFile) #删除已有文件
## QMessageBox.critical(self,"错误","录音输出文件被占用，无法删除")
## return False
recordFile = QUrl.fromLocalFile(selectedFile)
self.recorder.setOutputLocation(recordFile) #设置输出文件
recordDevice = self.ui.comboDevices.currentText()
self.recorder.setAudioInput(recordDevice) #设置录入设备
settings = QAudioEncoderSettings() #音频编码设置
settings.setCodec(self.ui.comboCodec.currentText()) #编码
sampRate = int(self.ui.comboSampleRate.currentText())
settings.setSampleRate(sampRate) #采样率
bitRate = int(self.ui.comboBitrate.currentText())
settings.setBitRate(bitRate) #比特率
channelCount = int(self.ui.comboChannels.currentText())
settings.setChannelCount(channelCount) #通道数
## quality=self.ui.sliderQuality.value() #也可以
quality = QMultimedia.EncodingQuality(self.ui.sliderQuality.value())
settings.setQuality(quality) #品质
if self.ui.radioQuality.isChecked(): #编码模式为固定品质,自动决定采样率，采样点大小
settings.setEncodingMode(QMultimedia.ConstantQualityEncoding)
else:
settings.setEncodingMode(
QMultimedia.ConstantBitRateEncoding) #固定比特率
self.recorder.setAudioSettings(settings) #音频设置
return True