def __init__(self,nskip=3):
self.interval = nskip+1
self.n = 0
qadi = QAudioDeviceInfo()
codecs = qadi.supportedCodecs()
codec_exists = len(codecs)
self.active = ('audio_directory' in dir(ccfg) and 'error_tones' in dir(ccfg))
self.tone_dict = {}
def __init__(self, parent=None):
print("Tone Widget inst")
QWidget.__init__(self, parent)
self.activeGen = ActiveGen(sampleRate=SAMPLE_RATE,
samplePerRead=Meep.SAMPLES_PER_READ)
self.createUI(self)
# Meep playback format initialization
format = QAudioFormat()
format.setChannelCount(AUDIO_CHANS)
format.setSampleRate(SAMPLE_RATE)
format.setSampleSize(SAMPLE_SIZE)
format.setCodec("audio/pcm")
format.setByteOrder(QAudioFormat.LittleEndian)
format.setSampleType(QAudioFormat.SignedInt)
# check compatibility of format with device
info = QAudioDeviceInfo(QAudioDeviceInfo.defaultOutputDevice())
if info.isFormatSupported(format) is False:
print(
"Raw audio format not supported by backend, cannot play audio."
)
return None
# Audio Output init
self.output = QAudioOutput(format, self)
output_buffer_size = \
int(2*SAMPLE_RATE \
*CTRL_INTERVAL/1000)
self.output.setBufferSize(output_buffer_size)
# initialize and start the audio playback
self.generator = Meep(format, self.activeGen, self)
self.generator.start()
self.output.start(self.generator)
# Create the port reader object
self.midiListener = MidiPortReader()
# Create a thread which will read it
self.listenerThread = QThread()
# move QObjet to a new thread
self.midiListener.moveToThread(self.listenerThread)
# Connect the signals to slot functions
self.midiListener.newNoteFrequency.connect(self.activeGen.setFreq)
self.midiListener.newNotePress.connect(self.activeGen.setNote)
# Tell Qt the function to call
# when it starts the thread
self.listenerThread.started.connect(self.midiListener.listener)
# start the thread
self.listenerThread.start()
def initializeAudio(self):
self.m_pullTimer = QTimer(self, timeout=self.pullTimerExpired)
self.m_pullMode = True
self.m_format = QAudioFormat()
self.m_format.setSampleRate(self.DataSampleRateHz)
self.m_format.setChannelCount(1)
self.m_format.setSampleSize(16)
self.m_format.setCodec('audio/pcm')
self.m_format.setByteOrder(QAudioFormat.LittleEndian)
self.m_format.setSampleType(QAudioFormat.SignedInt)
info = QAudioDeviceInfo(QAudioDeviceInfo.defaultOutputDevice())
if not info.isFormatSupported(self.m_format):
qWarning("Default format not supported - trying to use nearest")
self.m_format = info.nearestFormat(self.m_format)
self.m_generator = Generator(self.m_format,
self.DurationSeconds * 1000000, self.ToneSampleRateHz, self)
self.createAudioOutput()
def __init__(self, parent: QWidget = None) -> None:
super().__init__(parent)
self.m_deviceInfo: QAudioDeviceInfo = QAudioDeviceInfo()
self.m_settings: QAudioFormat = QAudioFormat()
self.testButton.clicked.connect(self.test)
self.modeBox.activated[int].connect(self.modeChanged)
self.deviceBox.activated[int].connect(self.deviceChanged)
self.sampleRateBox.activated[int].connect(self.sampleRateChanged)
self.channelsBox.activated[int].connect(self.channelChanged)
self.codecsBox.activated[int].connect(self.codecChanged)
self.sampleSizesBox.activated[int].connect(self.sampleSizeChanged)
self.sampleTypesBox.activated[int].connect(self.sampleTypeChanged)
self.endianBox.activated[int].connect(self.endianChanged)
self.populateTableButton.clicked.connect(self.populateTable)
self.modeBox.setCurrentIndex(0)
self.modeChanged(0)
self.deviceBox.setCurrentIndex(0)
self.deviceChanged(0)
def __init__(self, parent=None):
super(AudioTest, self).__init__(parent)
self.deviceInfo = QAudioDeviceInfo()
self.settings = QAudioFormat()
self.mode = QAudio.AudioOutput
self.testButton.clicked.connect(self.test)
self.modeBox.activated.connect(self.modeChanged)
self.deviceBox.activated.connect(self.deviceChanged)
self.sampleRateBox.activated.connect(self.sampleRateChanged)
self.channelsBox.activated.connect(self.channelChanged)
self.codecsBox.activated.connect(self.codecChanged)
self.sampleSizesBox.activated.connect(self.sampleSizeChanged)
self.sampleTypesBox.activated.connect(self.sampleTypeChanged)
self.endianBox.activated.connect(self.endianChanged)
self.populateTableButton.clicked.connect(self.populateTable)
self.modeBox.setCurrentIndex(0)
self.modeChanged(0)
self.deviceBox.setCurrentIndex(0)
self.deviceChanged(0)
