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 startVid(self):
self.cam.load()
# self.camvfind.show()
self.cam.setViewfinder(self.camvfind)
self.cam.setCaptureMode(QCamera.CaptureVideo)
self.cam.start()
audio = QAudioEncoderSettings()
audio.setCodec("audio/amr")
audio.setQuality(QtMultimedia.QMultimedia.NormalQuality)
video = QVideoEncoderSettings()
# video.setCodec("video/mp4")
video.setQuality(QtMultimedia.QMultimedia.NormalQuality)
video.setResolution(1920, 1080)
video.setFrameRate(30.0)
# self.recorder.setAudioSettings(audio)
self.recorder.setVideoSettings(video)
self.recorder.setContainerFormat("mp4")
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
def setupWindow(self):
"""Set up widgets in the main window and the QAudioRecorder instance."""
# Set up two push buttons (the app's first "screen")
self.select_path_button = QPushButton("Select Audio Path")
self.select_path_button.setObjectName("SelectFile")
self.select_path_button.setFixedWidth(140)
self.select_path_button.clicked.connect(self.selectAudioPath)
self.start_button = QPushButton()
self.start_button.setObjectName("StartButton")
self.start_button.setEnabled(False)
self.start_button.setFixedSize(105, 105)
self.start_button.clicked.connect(self.startRecording)
# Set up the labels and stop button (the app's second "screen")
self.recording_label = QLabel("Recording...")
self.recording_label.setFont(QFont("Helvetica [Cronyx]", 32))
self.recording_label.setVisible(False)
self.recording_label.setAlignment(Qt.AlignHCenter)
self.time_label = QLabel("00:00")
self.time_label.setFont(QFont("Helvetica [Cronyx]", 18))
self.time_label.setObjectName("Time")
self.time_label.setVisible(False)
self.time_label.setAlignment(Qt.AlignHCenter)
self.stop_button = QPushButton()
self.stop_button.setObjectName("StopButton")
self.stop_button.setFixedSize(65, 65)
self.stop_button.setVisible(False)
self.stop_button.clicked.connect(self.stopRecording)
# Set up the main layout
self.main_v_box = QVBoxLayout()
self.main_v_box.setAlignment(Qt.AlignHCenter)
self.main_v_box.addWidget(self.select_path_button)
# Force select_path_button to be centered in the window
self.main_v_box.setAlignment(self.select_path_button, Qt.AlignCenter)
self.main_v_box.addStretch(3)
self.main_v_box.addWidget(self.start_button)
self.main_v_box.setAlignment(self.start_button, Qt.AlignCenter)
self.main_v_box.addWidget(self.recording_label)
self.main_v_box.addWidget(self.time_label)
self.main_v_box.addStretch(3)
self.main_v_box.addWidget(self.stop_button)
self.main_v_box.setAlignment(self.stop_button, Qt.AlignCenter)
self.main_v_box.addStretch(1)
self.setLayout(self.main_v_box) # Set the beginning layout
# Specify audio encoder settings
audio_settings = QAudioEncoderSettings()
# Depending upon your platform or the codecs that you have available, you
# will need to change the codec. For Linux users if you are having issues
# use "audio/x-vorbis", and then select the .ogg extension when saving
# the file
audio_settings.setCodec("audio/wav")
audio_settings.setQuality(QMultimedia.HighQuality)
# Create instance of QAudioRecorder for recording audio
self.audio_recorder = QAudioRecorder()
# Uncomment to discover possible codecs supported on your platform
#print(self.audio_recorder.supportedAudioCodecs())
self.audio_recorder.setEncodingSettings(audio_settings)
self.audio_recorder.durationChanged.connect(self.displayTime)