def pump(self):
underrun = False
if self._stop_alsatime is not None:
return underrun
# Check that ALSA's still playing
if self._playing:
state = asound.snd_pcm_state(self.pcm)
if state not in (asound.SND_PCM_STATE_RUNNING,
asound.SND_PCM_STATE_PREPARED):
# Underrun!
check(asound.snd_pcm_prepare(self.pcm))
underrun = True
alsatime = self._get_asound_time()
try:
while self._timestamps[0][0] < alsatime:
self._timestamps.pop(0)
while self._timestamps[0][0] is None:
self._eos_count += 1
self._timestamps.pop(0)
except IndexError:
pass
return underrun
def pump(self):
underrun = False
if self._stop_alsatime is not None:
return underrun
# Check that ALSA's still playing
if self._playing:
state = asound.snd_pcm_state(self.pcm)
if state not in (asound.SND_PCM_STATE_RUNNING,
asound.SND_PCM_STATE_PREPARED):
# Underrun!
check(asound.snd_pcm_prepare(self.pcm))
underrun = True
alsatime = self._get_asound_time()
try:
while self._timestamps[0][0] < alsatime:
self._timestamps.pop(0)
while self._timestamps[0][0] is None:
self._eos_count += 1
self._timestamps.pop(0)
except IndexError:
pass
return underrun
def get_write_size(self):
state = asound.snd_pcm_state(self.pcm)
if state == asound.SND_PCM_STATE_PAUSED:
return 0
avail = max(0, asound.snd_pcm_avail_update(self.pcm))
bytes = avail * self.audio_format.bytes_per_sample
if bytes < self._min_write_bytes:
return 0
return bytes
def get_write_size(self):
state = asound.snd_pcm_state(self.pcm)
if state == asound.SND_PCM_STATE_PAUSED:
return 0
avail = max(0, asound.snd_pcm_avail_update(self.pcm))
bytes = avail * self.audio_format.bytes_per_sample
if bytes < self._min_write_bytes:
return 0
return bytes
def play(self):
if self._playing:
return
self._playing = True
if not self._sources:
return
if self._device:
state = asound.snd_pcm_state(self._device.pcm)
if self._device.can_pause and state == asound.SND_PCM_STATE_PAUSED:
check(asound.snd_pcm_pause(self._device.pcm, 0))
self._set_start_time(self._sources[0], self._timestamp)
def play(self):
if self._playing:
return
state = asound.snd_pcm_state(self.pcm)
if self.can_pause and state == asound.SND_PCM_STATE_PAUSED:
check(asound.snd_pcm_pause(self.pcm, 0))
elif state not in (asound.SND_PCM_STATE_RUNNING,
asound.SND_PCM_STATE_PREPARED):
check(asound.snd_pcm_prepare(self.pcm))
self._playing = True
if self._stop_alsatime is not None:
diff = self._get_asound_time() - self._stop_alsatime
self._timestamps = [(a + diff, t) for a, t in self._timestamps]
self._stop_alsatime = None
def play(self):
if self._playing:
return
state = asound.snd_pcm_state(self.pcm)
if self.can_pause and state == asound.SND_PCM_STATE_PAUSED:
check(asound.snd_pcm_pause(self.pcm, 0))
elif state not in (asound.SND_PCM_STATE_RUNNING,
asound.SND_PCM_STATE_PREPARED):
check(asound.snd_pcm_prepare(self.pcm))
self._playing = True
if self._stop_alsatime is not None:
diff = self._get_asound_time() - self._stop_alsatime
self._timestamps = [(a + diff, t) for a, t in self._timestamps]
self._stop_alsatime = None