def __init__(self, name, parent):
Node.__init__(self, name, parent)
self._fileName = StringAttribute("fileName", self)
self._leftSpectrum = NumericAttribute("leftSpectrum", self)
self._rightSpectrum = NumericAttribute("rightSpectrum", self)
self._time = NumericAttribute("time", self)
self._play = False
self.addInputAttribute(self._fileName)
self.addOutputAttribute(self._time)
self.addOutputAttribute(self._leftSpectrum)
self.addOutputAttribute(self._rightSpectrum)
self._setAttributeAffect(self._fileName, self._time)
self._setAttributeAffect(self._fileName, self._leftSpectrum)
self._setAttributeAffect(self._fileName, self._rightSpectrum)
self._setAttributeAllowedSpecializations(self._time, ["Float"])
self._setAttributeAllowedSpecializations(self._leftSpectrum, ["FloatArray"])
self._setAttributeAllowedSpecializations(self._rightSpectrum, ["FloatArray"])
self._setUpdateEnabled(False)
self._leftSpectrum.outValue().resize(64)
self._rightSpectrum.outValue().resize(64)
SoundManager.init()
def _advanceTime(self):
leftSpectrum = self._leftSpectrum.outValue()
rightSpectrum = self._rightSpectrum.outValue()
timeVal = self._time.outValue()
framesPerSecond = 24.0
timeStep = 1.0 / framesPerSecond
enlapsedTime = 0.0
while self._play:
enlapsedTime = enlapsedTime + timeStep
SoundManager.setSpectrumOnNumeric(leftSpectrum, 0)
SoundManager.setSpectrumOnNumeric(rightSpectrum, 1)
self._leftSpectrum.valueChanged()
self._rightSpectrum.valueChanged()
timeVal.setFloatValueAt(0, enlapsedTime)
self._time.valueChanged()
time.sleep(timeStep)
def play(self, value = True):
self._play = value
if self._play:
SoundManager.load(self._fileName.value().stringValue())
SoundManager.play()
thread.start_new_thread(self._advanceTime, ())
else:
SoundManager.stop()
self._time.outValue().setFloatValueAt(0, 0.0)
self._time.valueChanged()
def __del__(self):
self._play = False
SoundManager.terminate()