class EspeakDriver(object):
_moduleInitialized = False
_defaultVoice = ''
def __init__(self, proxy):
if not EspeakDriver._moduleInitialized:
# espeak cannot initialize more than once per process and has
# issues when terminating from python (assert error on close)
# so just keep it alive and init once
rate = _espeak.Initialize(_espeak.AUDIO_OUTPUT_PLAYBACK, 1000)
if rate == -1:
raise RuntimeError('could not initialize espeak')
EspeakDriver._defaultVoice = self.getProperty('voice')
EspeakDriver._moduleInitialized = True
_espeak.SetSynthCallback(self._onSynth)
# make sure all props reset
self.setProperty('voice', EspeakDriver._defaultVoice)
self.setProperty('rate', 200)
self.setProperty('volume', 1.0)
self._proxy = proxy
self._looping = True
self._stopping = False
def destroy(self):
_espeak.SetSynthCallback(None)
def say(self, text):
self._proxy.setBusy(True)
self._proxy.notify('started-utterance')
_espeak.Synth(text, flags=_espeak.ENDPAUSE)
def speakToFile(self, text, filename):
raise NotImplementedError('Not implemented in this driver')
def stop(self):
if _espeak.IsPlaying():
self._stopping = True
def getProperty(self, name):
if name == 'voices':
voices = []
for v in _espeak.ListVoices(None):
kwargs = {}
kwargs['id'] = v.name
kwargs['name'] = v.name
if v.languages:
kwargs['languages'] = [v.languages]
genders = [None, 'male', 'female']
kwargs['gender'] = genders[v.gender]
kwargs['age'] = v.age or None
voices.append(Voice(**kwargs))
return voices
elif name == 'voice':
return _espeak.GetCurrentVoice().contents.name
elif name == 'rate':
return _espeak.GetParameter(_espeak.RATE)
elif name == 'volume':
return _espeak.GetParameter(_espeak.VOLUME) / 100.0
else:
raise KeyError('unknown property %s' % name)
def setProperty(self, name, value):
if name == 'voice':
if value is None: return
try:
_espeak.SetVoiceByName(value)
except ctypes.ArgumentError, e:
raise ValueError(str(e))
elif name == 'rate':
try:
_espeak.SetParameter(_espeak.RATE, value, 0)
except ctypes.ArgumentError, e:
raise ValueError(str(e))
def setProperty(self, name, value):
if name == 'voice':
if value is None: return
try:
_espeak.SetVoiceByName(value)
except ctypes.ArgumentError, e:
raise ValueError(str(e))
elif name == 'rate':
try:
_espeak.SetParameter(_espeak.RATE, value, 0)
except ctypes.ArgumentError, e:
raise ValueError(str(e))
elif name == 'volume':
try:
_espeak.SetParameter(_espeak.VOLUME, int(round(value * 100,
2)), 0)
except TypeError, e:
raise ValueError(str(e))
else:
raise KeyError('unknown property %s' % name)
def startLoop(self):
first = True
self._looping = True
while self._looping:
if first:
# kick the queue
self._proxy.setBusy(False)
first = False
if self._stopping:
# have to do the cancel on the main thread, not inside the