def initAudioPlayer(self):
self.qbyte_array = QtCore.QByteArray()
self.buffer = QtCore.QBuffer()
audioFormat = QtMultimedia.QAudioFormat()
audioFormat.setSampleRate(self.sr)
audioFormat.setChannelCount(1)
audioFormat.setSampleSize(16)
audioFormat.setCodec('audio/pcm')
audioFormat.setByteOrder(QtMultimedia.QAudioFormat.LittleEndian)
audioFormat.setSampleType(QtMultimedia.QAudioFormat.SignedInt)
deviceInfo = QtMultimedia.QAudioDeviceInfo(
QtMultimedia.QAudioDeviceInfo.defaultOutputDevice())
if not deviceInfo.isFormatSupported(audioFormat):
print(
'Raw audio format not supported by backend, cannot play audio.'
)
return
self.audioPlayer = QtMultimedia.QAudioOutput(audioFormat, self)
def __init__(self):
self.m_device = QtMultimedia.QAudioDeviceInfo.defaultOutputDevice()
self.m_output = None
self.m_format = QtMultimedia.QAudioFormat()
self.m_format.setSampleRate(16000)
self.m_format.setChannelCount(1)
self.m_format.setSampleSize(16)
self.m_format.setCodec('audio/pcm')
self.m_format.setByteOrder(QtMultimedia.QAudioFormat.LittleEndian)
self.m_format.setSampleType(QtMultimedia.QAudioFormat.SignedInt)
info = QtMultimedia.QAudioDeviceInfo(
QtMultimedia.QAudioDeviceInfo.defaultOutputDevice())
if not info.isFormatSupported(self.m_format):
QtCore.qWarning(
"Default format not supported - trying to use nearest")
self.m_format = info.nearestFormat(self.m_format)
super(AudioOutput, self).__init__(self.m_device, self.m_format)
self.setNotifyInterval(1)
self.setBufferSize(6400)
