class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
# Controles principales para organizar la ventana.
self.setupConstants()
self.widget = QWidget(self)
# tha main layout
self.layout = QVBoxLayout()
# the top box with file selections
self.input_layout = QHBoxLayout()
self.output_layout = QHBoxLayout()
self.bottom_layout = QHBoxLayout()
self.volume_box = QHBoxLayout()
# video playback section
self.video_widget = QVideoWidget(self)
self.media_player = QMediaPlayer()
self.media_player.setVideoOutput(self.video_widget)
# initialize audio recording section
self.recorder = QAudioRecorder()
# labels
self.volume_label = QLabel()
self.volume_label.setText("Volume")
# Buttons for the I/O files selection
self.input_file_button = QPushButton("Video Input", self)
self.output_file_button = QPushButton("Audio output", self)
# path/file line edits
self.input_file_edit = QLineEdit()
self.output_file_edit = QLineEdit()
self.play_button = QPushButton("", self)
self.play_button.setIcon(self.play_normal_icon)
self.play_button.resize(150, 150)
self.stop_button = QPushButton("", self)
self.stop_button.setIcon(self.stop_normal_icon)
self.record_button = QPushButton("", self)
self.record_button.setCheckable(True)
self.record_button.setIcon(self.rec_icon)
self.seek_slider = QSlider(Qt.Horizontal)
self.volume_slider = QSlider(Qt.Horizontal)
self.volume_slider.setRange(0, 100)
self.volume_slider.setValue(self.media_player.volume())
self.input_layout.addWidget(self.input_file_button)
self.input_layout.addWidget(self.input_file_edit)
self.output_layout.addWidget(self.output_file_button)
self.output_layout.addWidget(self.output_file_edit)
self.bottom_layout.addWidget(self.play_button)
self.bottom_layout.addWidget(self.stop_button)
self.bottom_layout.addWidget(self.record_button)
self.bottom_layout.addLayout(self.volume_box)
self.volume_box.addWidget(self.volume_label)
self.volume_box.addWidget(self.volume_slider)
self.layout.addWidget(self.video_widget)
self.layout.addLayout(self.bottom_layout)
self.layout.addWidget(self.seek_slider)
self.layout.addLayout(self.input_layout)
self.layout.addLayout(self.output_layout)
# Personalizzazione della finestra
self.setWindowTitle("Wish' Karaoke! :)")
self.resize(800, 600)
self.layout.setContentsMargins(10, 10, 10, 10)
self.bottom_layout.setContentsMargins(0, 0, 0, 0)
self.widget.setLayout(self.layout)
self.setCentralWidget(self.widget)
self.setupMenus()
self.setupUiConnections()
def setupMenus(self):
# setup the menus
self.mainMenu = self.menuBar()
# File menu and subitems
self.fileMenu = self.mainMenu.addMenu('File')
self.exitButton = QAction(self.exit_icon, 'Exit', self)
self.exitButton.setShortcut('Ctrl+Q')
self.exitButton.setStatusTip('Exit application')
self.fileMenu.addAction(self.exitButton)
# View menu and related items
self.viewMenu = self.mainMenu.addMenu('View')
# Fullscreen item
self.toggleFullscreenButton = QAction(QIcon(""), 'Fullscreen', self)
self.toggleFullscreenButton.setCheckable(True)
self.toggleFullscreenButton.setStatusTip('Toggle fullscreen more')
self.toggleFullscreenButton.setShortcut("CTRL+SHIFT+F")
self.viewMenu.addAction(self.toggleFullscreenButton)
# Tools menu and related items
self.toolsMenu = self.mainMenu.addMenu('Tools')
# Play/Rec bind toggle
self.bindPlayRecButton = QAction(QIcon(""), 'Bind Play/Rec', self)
self.bindPlayRecButton.setCheckable(True)
self.bindPlayRecButton.setStatusTip('Bind Play and Rec')
self.toolsMenu.addAction(self.bindPlayRecButton)
def setupUiConnections(self):
"""
Put all the UI connections and event catchers here, just to keep the code clean
:return:
"""
self.record_button.clicked.connect(self.recButtonState)
self.seek_slider.sliderMoved.connect(self.media_player.setPosition)
self.volume_slider.sliderMoved.connect(self.media_player.setVolume)
self.media_player.positionChanged.connect(self.seek_slider.setValue)
self.media_player.durationChanged.connect(
partial(self.seek_slider.setRange, 0))
self.play_button.clicked.connect(self.play_clicked)
self.stop_button.clicked.connect(self.stop_clicked)
self.media_player.stateChanged.connect(self.state_changed)
#
self.input_file_button.clicked.connect(self.selectInputFile)
#
self.input_file_edit.textChanged.connect(self.setInputMedia)
#
self.output_file_button.clicked.connect(self.selectOutputFile)
self.output_file_edit.textChanged.connect(self.setOutputMedia)
# menu connections
# fullscreen
self.toggleFullscreenButton.toggled.connect(self.toggleFullscreen)
# quit
self.exitButton.triggered.connect(self.close)
# Play/Rec bind
self.bindPlayRecButton.toggled.connect(self.bind_play_rec)
# Installing event filter for the video widget
self.video_widget.installEventFilter(self)
def bind_play_rec(self):
"""
toggle the binding between play and rec to start recording as soon as playback starts.
:return: Nothing
"""
if not self.bindPlayRecStatus:
self.bindPlayRecStatus = True
else:
self.bindPlayRecStatus = False
# If binding is active, the REC button is disabled.
self.record_button.setDisabled(self.bindPlayRecStatus)
def play_clicked(self):
"""
Start or resume playback.
If binding is active, start/pause the audio recording as well
"""
if (self.media_player.state()
in (QMediaPlayer.PausedState, QMediaPlayer.StoppedState)):
self.media_player.play()
logger.info("(Re)Starting playback")
if self.bindPlayRecStatus:
if (self.recorder.state() in (QAudioRecorder.PausedState,
QAudioRecorder.StoppedState)):
logger.info(
"Rec/Play bind is on! (Re)Starting Recorder as well.")
self.recorder.record()
else:
self.media_player.pause()
logger.info("Pausing playback")
if self.bindPlayRecStatus:
logger.info("Rec/Play bind is on! Pausing Recorder as well.")
self.recorder.pause()
def stop_clicked(self):
"""
Stopping playback.
if Play/Rec binding is on, stop also the recorder.
"""
logger.info("Stopping playback")
self.media_player.stop()
if self.bindPlayRecStatus:
logger.info("Rec/Play bind is on! Stopping Recorder as well.")
self.recorder.stop()
def state_changed(self, newstate):
"""
Update buttons. Not really needed, probably.
"""
states = {
QMediaPlayer.PausedState: self.play_normal_icon,
QMediaPlayer.PlayingState: self.pause_icon,
QMediaPlayer.StoppedState: self.play_normal_icon
}
self.play_button.setIcon(states[newstate])
# elegant way to enable/disable the stop button
self.stop_button.setEnabled(newstate != QMediaPlayer.StoppedState)
def eventFilter(self, obj, event):
"""
Catch MouseButtonDblClick or CTRL+SHIFT+F to toggle fullscreen
"""
if (event.type() == QEvent.KeyPress and event.modifiers() & Qt.ShiftModifier \
and event.modifiers() & Qt.ControlModifier and event.key() == 70) \
or event.type() == QEvent.MouseButtonDblClick:
obj.setFullScreen(not obj.isFullScreen())
return False
def toggleFullscreen(self):
self.video_widget.setFullScreen(not self.video_widget.isFullScreen())
def selectInputFile(self):
"""
Just a small function to open a file dialog
"""
#self.input_file_edit.setText(QFileDialog.getOpenFileName())
# encode the resulting filename as UNICODE text
self.input_filename, _ = QFileDialog.getOpenFileName()
self.input_file_edit.setText(self.input_filename)
def setInputMedia(self, filename):
self.media_player.setMedia(QMediaContent(QUrl.fromLocalFile(filename)))
def selectOutputFile(self):
"""
Just a small function to open a file dialog
"""
self.output_filename, _ = QFileDialog.getSaveFileName()
self.output_file_edit.setText(self.output_filename)
def setOutputMedia(self, filename):
self.recorder.setOutputLocation(QUrl.fromLocalFile(filename))
def recButtonState(self):
if self.record_button.isChecked():
self.doRecord()
else:
self.stopRecord()
def doRecord(self):
"""
TODO: define this function better, toggled by the Rec button
:return:
"""
print("Recording")
self.recorder.record()
def stopRecord(self):
print("Stopping recorder")
self.recorder.stop()
def setupConstants(self):
self.rec_icon = QIcon.fromTheme("media-record", QIcon("icons/rec.png"))
self.play_normal_icon = QIcon.fromTheme("media-playback-start",
QIcon("icons/Play-Normal.png"))
self.stop_normal_icon = QIcon.fromTheme("media-playback-stop",
QIcon("icons/Stop-Normal.png"))
self.exit_icon = QIcon.fromTheme("application-exit",
QIcon("icons/application-exit.png"))
self.pause_icon = QIcon.fromTheme(
"media-playback-pause", QIcon("icons/Pause-Disabled-icon.png"))
self.bindPlayRecStatus = False
class Tuner(QMainWindow):
def __init__(self, parent=None):
super(Tuner, self).__init__(parent)
# 从文件中加载UI定义
# self.ui = loadUi('Tuner.ui') #pyqt5
self.ui = Ui_MainWindow() # 创建UI对象
self.ui.setupUi(self) # 构造UI界面
# # 播放标准音
self.mediaPlayer = QMediaPlayer(self)
self.ui.c1.clicked.connect(self.playaudioc)
self.ui.d1.clicked.connect(self.playaudiod)
self.ui.e1.clicked.connect(self.playaudioe)
self.ui.f1.clicked.connect(self.playaudiof)
self.ui.g1.clicked.connect(self.playaudiog)
self.ui.a1.clicked.connect(self.playaudioa)
self.ui.b1.clicked.connect(self.playaudiob)
# 录音
self.fileName = ""
self.recorder = QAudioRecorder(self)
self.recorder.stateChanged.connect(self.do_stateChanged)
self.recorder.durationChanged.connect(self.do_durationChanged)
self.probe = QAudioProbe(self) # 探测器
self.probe.setSource(self.recorder)
# self.probe.audioBufferProbed.connect(self.do_processBuffer)
if self.recorder.defaultAudioInput() == "": # str类型
return # 无音频录入设备
for device in self.recorder.audioInputs():
self.ui.comboDevices.addItem(device) # 音频录入设备列表
for codecName in self.recorder.supportedAudioCodecs():
self.ui.comboCodec.addItem(codecName) # 支持的音频编码
sampleList, isContinuous = self.recorder.supportedAudioSampleRates()
# isContinuous 是否支持连续的采样率，与C++不一样
for i in range(len(sampleList)):
self.ui.comboSampleRate.addItem("%d" % sampleList[i]) # 支持的采样率
## channels
self.ui.comboChannels.addItem("1")
self.ui.comboChannels.addItem("2")
self.ui.comboChannels.addItem("4")
## ==============自定义功能函数============
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 pitch_estimation(self, wavpath):
if os.path.exists(wavpath):
y, sr = librosa.load(wavpath)
f0, voiced_flag, voiced_probs = librosa.pyin(
y,
fmin=librosa.note_to_hz('B3'),
fmax=librosa.note_to_hz('C5'))
f0 = f0[~np.isnan(f0)]
times = librosa.times_like(f0)
level = optimize.curve_fit(lambda x, b: b, times,
np.nan_to_num(f0))[0]
pitch = np.around(level[0], decimals=3).astype(float)
return pitch
## ==========由connectSlotsByName() 自动连接的槽函数==================
@pyqtSlot()
def on_btnGetFile_clicked(self): ##"录音输出文件"按钮
curPath = os.getcwd() # 获取系统当前目录
dlgTitle = "选择输出文件"
filt = "wav文件(*.wav)"
self.fileName, flt, = QFileDialog.getSaveFileName(
self, dlgTitle, curPath, filt)
if (self.fileName != ""):
self.ui.editOutputFile.setText(self.fileName)
@pyqtSlot() ##开始录音
def on_actRecord_triggered(self):
success = True
if (self.recorder.state() == QMediaRecorder.StoppedState): # 已停止，重新设置
success = self.__setRecordParams() # 设置录音参数
if success:
self.recorder.record()
@pyqtSlot() ##退出
def on_actQuit_triggered(self):
sys.exit(app.exec_())
# @pyqtSlot() ##暂停
# def on_actPause_triggered(self):
# self.recorder.pause()
@pyqtSlot() ##停止
def on_actStop_triggered(self):
self.recorder.stop()
# 录完立马分析并显示Hz
name = self.fileName.split('/')[-1][:-4] # 存储的文件名 无.wav
# func = lambda x, b: b
if name == 'c1':
# if os.path.exists(self.fileName):
# y, sr = librosa.load(self.fileName)
# f0, voiced_flag, voiced_probs = librosa.pyin(y, fmin=librosa.note_to_hz('C4'),
# fmax=librosa.note_to_hz('C5'))
# f0 = f0[~np.isnan(f0)]
# times = librosa.times_like(f0)
# level = optimize.curve_fit(lambda x, b: b, times, np.nan_to_num(f0))[0]
# pitch = np.around(level[0], decimals=3).astype(float)
pitch = self.pitch_estimation(self.fileName)
self.ui.c1m.setStyleSheet("color:rgb(10,10,10,255);"
"font-size:32px;"
"font-weight:600;"
"font-family:Times New Roman;")
self.ui.c1m.setText(str(pitch))
F0 = 261.626
err = np.around(np.abs(pitch - F0) / F0, decimals=4) * 100
self.ui.c1e.setStyleSheet("color:rgb(10,10,10,255);"
"font-size:32px;"
"font-weight:600;"
"font-family:Times New Roman;")
self.ui.c1e.setText(str(err))
elif name == 'd1':
pitch = self.pitch_estimation(self.fileName)
self.ui.d1m.setStyleSheet("color:rgb(10,10,10,255);"
"font-size:32px;"
"font-weight:600;"
"font-family:Times New Roman;")
self.ui.d1m.setText(str(pitch))
F0 = 293.665
err = np.around(np.abs(pitch - F0) / F0, decimals=4) * 100
self.ui.d1e.setStyleSheet("color:rgb(10,10,10,255);"
"font-size:32px;"
"font-weight:600;"
"font-family:Times New Roman;")
self.ui.d1e.setText(str(err))
elif name == 'e1':
pitch = self.pitch_estimation(self.fileName)
self.ui.e1m.setStyleSheet("color:rgb(10,10,10,255);"
"font-size:32px;"
"font-weight:600;"
"font-family:Times New Roman;")
self.ui.e1m.setText(str(pitch))
F0 = 329.628
err = np.around(np.abs(pitch - F0) / F0, decimals=4) * 100
self.ui.e1e.setStyleSheet("color:rgb(10,10,10,255);"
"font-size:32px;"
"font-weight:600;"
"font-family:Times New Roman;")
self.ui.e1e.setText(str(err))
elif name == 'f1':
pitch = self.pitch_estimation(self.fileName)
self.ui.f1m.setStyleSheet("color:rgb(10,10,10,255);"
"font-size:32px;"
"font-weight:600;"
"font-family:Times New Roman;")
self.ui.f1m.setText(str(pitch))
F0 = 349.228
err = np.around(np.abs(pitch - F0) / F0, decimals=4) * 100
self.ui.f1e.setStyleSheet("color:rgb(10,10,10,255);"
"font-size:32px;"
"font-weight:600;"
"font-family:Times New Roman;")
self.ui.f1e.setText(str(err))
elif name == 'g1':
pitch = self.pitch_estimation(self.fileName)
self.ui.g1m.setStyleSheet("color:rgb(10,10,10,255);"
"font-size:32px;"
"font-weight:600;"
"font-family:Times New Roman;")
self.ui.g1m.setText(str(pitch))
F0 = 391.995
err = np.around(np.abs(pitch - F0) / F0, decimals=4) * 100
self.ui.g1e.setStyleSheet("color:rgb(10,10,10,255);"
"font-size:32px;"
"font-weight:600;"
"font-family:Times New Roman;")
self.ui.g1e.setText(str(err))
elif name == 'a1':
pitch = self.pitch_estimation(self.fileName)
self.ui.a1m.setStyleSheet("color:rgb(10,10,10,255);"
"font-size:32px;"
"font-weight:600;"
"font-family:Times New Roman;")
self.ui.a1m.setText(str(pitch))
F0 = 440.000
err = np.around(np.abs(pitch - F0) / F0, decimals=4) * 100
self.ui.a1e.setStyleSheet("color:rgb(10,10,10,255);"
"font-size:32px;"
"font-weight:600;"
"font-family:Times New Roman;")
self.ui.a1e.setText(str(err))
elif name == 'b1':
pitch = self.pitch_estimation(self.fileName)
self.ui.b1m.setStyleSheet("color:rgb(10,10,10,255);"
"font-size:32px;"
"font-weight:600;"
"font-family:Times New Roman;")
self.ui.b1m.setText(str(pitch))
F0 = 493.883
err = np.around(np.abs(pitch - F0) / F0, decimals=4) * 100
self.ui.b1e.setStyleSheet("color:rgb(10,10,10,255);"
"font-size:32px;"
"font-weight:600;"
"font-family:Times New Roman;")
self.ui.b1e.setText(str(err))
else:
QMessageBox.critical(self, "文件名错误", "请输入c1-b1中的音名")
## =============自定义槽函数===============================
def do_stateChanged(self, state): ##状态变化
isRecording = (state == QMediaRecorder.RecordingState) # 正在录制
self.ui.actRecord.setEnabled(not isRecording)
# self.ui.actPause.setEnabled(isRecording)
self.ui.actStop.setEnabled(isRecording)
isStoped = (state == QMediaRecorder.StoppedState) # 已停止
self.ui.btnGetFile.setEnabled(isStoped)
self.ui.editOutputFile.setEnabled(isStoped)
def do_durationChanged(self, duration): ##持续时间长度变化
self.ui.LabPassTime.setText("已录制 %d 秒" % (duration / 1000))
# ============================================================================
@pyqtSlot()
def playaudioc(self):
self.mediaPlayer.setMedia(
QMediaContent(QUrl.fromLocalFile("data/standard/C4.wav")))
self.mediaPlayer.play()
@pyqtSlot()
def playaudiod(self):
self.mediaPlayer.setMedia(
QMediaContent(QUrl.fromLocalFile("data/standard/D4.wav")))
self.mediaPlayer.play()
@pyqtSlot()
def playaudioe(self):
self.mediaPlayer.setMedia(
QMediaContent(QUrl.fromLocalFile("data/standard/E4.wav")))
self.mediaPlayer.play()
@pyqtSlot()
def playaudiof(self):
self.mediaPlayer.setMedia(
QMediaContent(QUrl.fromLocalFile("data/standard/F4.wav")))
self.mediaPlayer.play()
@pyqtSlot()
def playaudiog(self):
self.mediaPlayer.setMedia(
QMediaContent(QUrl.fromLocalFile("data/standard/G4.wav")))
self.mediaPlayer.play()
@pyqtSlot()
def playaudioa(self):
self.mediaPlayer.setMedia(
QMediaContent(QUrl.fromLocalFile("data/standard/A4.wav")))
self.mediaPlayer.play()
@pyqtSlot()
def playaudiob(self):
self.mediaPlayer.setMedia(
QMediaContent(QUrl.fromLocalFile("data/standard/B4.wav")))
self.mediaPlayer.play()
class Recorder(QtWidgets.QWidget):
def __init__(self, parent=None):
super().__init__(parent)
self.ui = Ui_Form()
self.ui.setupUi(self)
self.recorder = QAudioRecorder(self)
self.recorder.stateChanged.connect(self.do_stateChanged)
self.recorder.durationChanged.connect(self.do_durationChanged)
self.probe = QAudioProbe(self)
self.probe.setSource(self.recorder)
self.probe.audioBufferProbed.connect(self.do_processBuffer)
if self.recorder.defaultAudioInput() == "": # str类型
return # 无音频录入设备
for device in self.recorder.audioInputs():
self.ui.comboDevices.addItem(device) # 音频录入设备列表
for codecName in self.recorder.supportedAudioCodecs():
self.ui.comboCodec.addItem(codecName) # 支持的音频编码
sampleList, isContinuous = self.recorder.supportedAudioSampleRates()
# isContinuous 是否支持连续的采样率，与C++不一样
for i in range(len(sampleList)):
self.ui.comboSampleRate.addItem("%d" % sampleList[i]) # 支持的采样率
# channels
self.ui.comboChannels.addItem("1")
self.ui.comboChannels.addItem("2")
self.ui.comboChannels.addItem("4")
# quality
self.ui.sliderQuality.setRange(0, QMultimedia.VeryHighQuality)
self.ui.sliderQuality.setValue(QMultimedia.NormalQuality)
# bitrates
self.ui.comboBitrate.addItem("32000")
self.ui.comboBitrate.addItem("64000")
self.ui.comboBitrate.addItem("96000")
self.ui.comboBitrate.addItem("128000")
self.__addToolbar()
def __addToolbar(self):
layout = QtWidgets.QVBoxLayout()
Astart = QtWidgets.QToolButton()
Astart.setText("开始")
Astart.setDefaultAction(self.ui.actRecordStart)
Apause = QtWidgets.QToolButton()
Apause.setText("暂停")
Apause.setDefaultAction(self.ui.actRecordPause)
Astop = QtWidgets.QToolButton()
Astop.setText("停止")
Astop.setDefaultAction(self.ui.actRecordStop)
self.toolbar = QtWidgets.QToolBar()
self.toolbar.addWidget(Astart)
self.toolbar.addWidget(Apause)
self.toolbar.addWidget(Astop)
layout.addWidget(self.toolbar)
layout.addWidget(self.ui.widget)
self.setLayout(layout)
def __setRecordParams(self):
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
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=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
## ==========由connectSlotsByName() 自动连接的槽函数==================
@pyqtSlot()
def on_btnGetFile_clicked(self): ##"录音输出文件"按钮
curPath=os.getcwd() #获取系统当前目录
dlgTitle="选择输出文件"
filt="wav文件(*.wav)"
fileName,flt,=QFileDialog.getSaveFileName(self, dlgTitle, curPath, filt)
if (fileName !=""):
self.ui.editOutputFile.setText(fileName)
@pyqtSlot() ##开始录音
def on_actRecordStart_triggered(self):
success=True
if (self.recorder.state() == QMediaRecorder.StoppedState): #已停止，重新设置
success=self.__setRecordParams() #设置录音参数
if success:
self.recorder.record()
@pyqtSlot() ##暂停
def on_actRecordPause_triggered(self):
self.recorder.pause()
@pyqtSlot()
def on_actRecordStop_triggered(self):
self.recorder.stop()
## =============自定义槽函数===============================
def do_stateChanged(self,state): ##状态变化
isRecording=(state==QMediaRecorder.RecordingState) #正在录制
self.ui.actRecordStart.setEnabled(not isRecording)
self.ui.actRecordPause.setEnabled(isRecording)
self.ui.actRecordStop.setEnabled(isRecording)
isStoped=(state==QMediaRecorder.StoppedState) #已停止
self.ui.btnGetFile.setEnabled(isStoped)
self.ui.editOutputFile.setEnabled(isStoped)
def do_durationChanged(self,duration): ##持续时间长度变化
self.ui.LabPassTime.setText("已录制 %d 秒"%(duration/1000))
def do_processBuffer(self,buffer): ##解析缓冲区数据
self.ui.spin_byteCount.setValue(buffer.byteCount()) #缓冲区字节数
self.ui.spin_duration.setValue(buffer.duration()/1000) #缓冲区时长
self.ui.spin_frameCount.setValue(buffer.frameCount()) #缓冲区帧数
self.ui.spin_sampleCount.setValue(buffer.sampleCount()) #缓冲区采样数
audioFormat=buffer.format() #缓冲区格式,QAudioBuffer
self.ui.spin_channelCount.setValue(audioFormat.channelCount()) #通道数
self.ui.spin_sampleSize.setValue(audioFormat.sampleSize()) #采样大小
self.ui.spin_sampleRate.setValue(audioFormat.sampleRate()) #采样率
self.ui.spin_bytesPerFrame.setValue(audioFormat.bytesPerFrame()) #每帧字节数
if (audioFormat.byteOrder()==QAudioFormat.LittleEndian):
self.ui.edit_byteOrder.setText("LittleEndian") #字节序
else:
self.ui.edit_byteOrder.setText("BigEndian")
self.ui.edit_codec.setText(audioFormat.codec()) #编码格式
if (audioFormat.sampleType()==QAudioFormat.SignedInt): #采样点类型
self.ui.edit_sampleType.setText("SignedInt")
elif(audioFormat.sampleType()==QAudioFormat.UnSignedInt):
self.ui.edit_sampleType.setText("UnSignedInt")
elif(audioFormat.sampleType()==QAudioFormat.Float):
self.ui.edit_sampleType.setText("Float")
else:
self.ui.edit_sampleType.setText("Unknown")