def stop(self):
super(OpenALStreamingSound, self).stop()
# Release all buffers
queued = al.ALint()
al.alGetSourcei(self.source, al.AL_BUFFERS_QUEUED, queued)
self._release_buffers(queued.value)
def _get_time(self):
buffer = al.ALint()
al.alGetSourcei(self.source, al.AL_BUFFER, buffer)
if not buffer:
return 0.0
# The playback position at the start of the current buffer
buffer_timestamp = buffer_pool.timestamp(buffer.value)
if _have_1_1:
# Add buffer timestamp to sample offset
# XXX this occasionally goes backwards
buffer_samples = al.ALint()
al.alGetSourcei(self.source, al.AL_SAMPLE_OFFSET, buffer_samples)
sample_rate = al.ALint()
al.alGetBufferi(buffer.value, al.AL_FREQUENCY, sample_rate)
buffer_time = buffer_samples.value / float(sample_rate.value)
return buffer_timestamp + buffer_time
else:
# Interpolate system time past buffer timestamp
if not self.playing:
return self._last_buffer_time + buffer_timestamp
elif buffer.value == self._last_buffer:
return time.time() - self._last_buffer_time + buffer_timestamp
else:
self._last_buffer = buffer.value
self._last_buffer_time = time.time()
return buffer_timestamp
def _openal_play(self):
if self.playing:
return
buffers = al.ALint()
al.alGetSourcei(self.source, al.AL_BUFFERS_QUEUED, buffers)
if buffers.value == 0:
self.play_when_buffered = True
else:
al.alSourcePlay(self.source)
self.play_when_buffered = False
self.playing = True
self._last_buffer_time = time.time() - self._last_buffer_time
def dispatch_events(self):
queued = al.ALint()
processed = al.ALint()
al.alGetSourcei(self.source, al.AL_BUFFERS_QUEUED, queued)
al.alGetSourcei(self.source, al.AL_BUFFERS_PROCESSED, processed)
if processed.value == queued.value:
self.finished = True
self.playing = False
self.dispatch_event(EVENT_FINISHED)
self._processed_buffers = processed.value
self._queued_buffers = queued.value
if self.play_when_buffered and queued.value:
self._openal_play()
