def refill(self, write_size):
if _debug:
print 'refill', write_size
self._lock.acquire()
while write_size > self._min_buffer_size:
audio_data = self.source_group.get_audio_data(write_size)
if not audio_data:
self._eos = True
self._events.append(
(self._write_cursor, MediaEvent(0, 'on_eos')))
self._events.append(
(self._write_cursor, MediaEvent(0, 'on_source_group_eos')))
break
for event in audio_data.events:
cursor = self._write_cursor + event.timestamp * \
self.source_group.audio_format.bytes_per_second
self._events.append((cursor, event))
context.lock()
buffer = bufferPool.getBuffer(self._al_source)
al.alBufferData(buffer,
self._al_format,
audio_data.data,
audio_data.length,
self.source_group.audio_format.sample_rate)
if _debug_buffers:
error = al.alGetError()
if error != 0:
print("BUFFER DATA ERROR: " + str(error))
al.alSourceQueueBuffers(self._al_source, 1, ctypes.byref(buffer))
if _debug_buffers:
error = al.alGetError()
if error != 0:
print("QUEUE BUFFER ERROR: " + str(error))
context.unlock()
self._write_cursor += audio_data.length
self._buffer_sizes.append(audio_data.length)
self._buffer_timestamps.append(audio_data.timestamp)
write_size -= audio_data.length
# Check for underrun stopping playback
if self._playing:
state = al.ALint()
context.lock()
al.alGetSourcei(self._al_source, al.AL_SOURCE_STATE, state)
if state.value != al.AL_PLAYING:
if _debug:
print 'underrun'
al.alSourcePlay(self._al_source)
context.unlock()
self._lock.release()
def refill(self, write_size):
if _debug:
print 'refill', write_size
self._lock.acquire()
while write_size > self._min_buffer_size:
audio_data = self.source_group.get_audio_data(write_size)
if not audio_data:
self._eos = True
self._events.append(
(self._write_cursor, MediaEvent(0, 'on_eos')))
self._events.append(
(self._write_cursor, MediaEvent(0, 'on_source_group_eos')))
break
for event in audio_data.events:
cursor = self._write_cursor + event.timestamp * \
self.source_group.audio_format.bytes_per_second
self._events.append((cursor, event))
context.lock()
buffer = bufferPool.getBuffer(self._al_source)
al.alBufferData(buffer,
self._al_format,
audio_data.data,
audio_data.length,
self.source_group.audio_format.sample_rate)
if _debug_buffers:
error = al.alGetError()
if error != 0:
print("BUFFER DATA ERROR: " + str(error))
al.alSourceQueueBuffers(self._al_source, 1, ctypes.byref(buffer))
if _debug_buffers:
error = al.alGetError()
if error != 0:
print("QUEUE BUFFER ERROR: " + str(error))
context.unlock()
self._write_cursor += audio_data.length
self._buffer_sizes.append(audio_data.length)
self._buffer_timestamps.append(audio_data.timestamp)
write_size -= audio_data.length
# Check for underrun stopping playback
if self._playing:
state = al.ALint()
context.lock()
al.alGetSourcei(self._al_source, al.AL_SOURCE_STATE, state)
if state.value != al.AL_PLAYING:
if _debug:
print 'underrun'
al.alSourcePlay(self._al_source)
context.unlock()
self._lock.release()
def _update_play_cursor(self):
if not self._al_source:
return
self._lock.acquire()
context.lock()
# Release spent buffers
processed = al.ALint()
al.alGetSourcei(self._al_source, al.AL_BUFFERS_PROCESSED, processed)
processed = processed.value
if processed:
buffers = (al.ALuint * processed)()
al.alSourceUnqueueBuffers(self._al_source, len(buffers), buffers)
error = al.alGetError()
if error != 0:
if _debug_buffers:
print ("Source unqueue error: " + str(error))
else:
for b in buffers:
bufferPool.dequeueBuffer(self._al_source, b)
context.unlock()
if processed:
if len(self._buffer_timestamps) == processed and self._buffer_timestamps[-1] is not None:
# Underrun, take note of timestamp.
# We check that the timestamp is not None, because otherwise
# our source could have been cleared.
self._underrun_timestamp = self._buffer_timestamps[-1] + self._buffer_sizes[-1] / float(
self.source_group.audio_format.bytes_per_second
)
self._buffer_cursor += sum(self._buffer_sizes[:processed])
del self._buffer_sizes[:processed]
del self._buffer_timestamps[:processed]
if not context.have_1_1:
self._buffer_system_time = time.time()
# Update play cursor using buffer cursor + estimate into current
# buffer
if context.have_1_1:
bytes = al.ALint()
context.lock()
al.alGetSourcei(self._al_source, al.AL_BYTE_OFFSET, bytes)
context.unlock()
if _debug:
print "got bytes offset", bytes.value
self._play_cursor = self._buffer_cursor + bytes.value
else:
# Interpolate system time past buffer timestamp
self._play_cursor = self._buffer_cursor + int(
(time.time() - self._buffer_system_time) * self.source_group.audio_format.bytes_per_second
)
# Process events
while self._events and self._events[0][0] < self._play_cursor:
_, event = self._events.pop(0)
event._sync_dispatch_to_player(self.player)
self._lock.release()
def delete(self):
if _debug:
print 'OpenALAudioPlayer.delete()'
if not self._al_source:
return
context.worker.remove(self)
with self._lock:
with context.lock:
al.alDeleteSources(1, self._al_source)
bufferPool.deleteSource(self._al_source)
if _debug_buffers:
error = al.alGetError()
if error != 0:
print("DELETE ERROR: " + str(error))
self._al_source = None
def delete(self):
if _debug:
print 'OpenALAudioPlayer.delete()'
if not self._al_source:
return
context.worker.remove(self)
with self._lock:
with context.lock:
al.alDeleteSources(1, self._al_source)
bufferPool.deleteSource(self._al_source)
if _debug_buffers:
error = al.alGetError()
if error != 0:
print("DELETE ERROR: " + str(error))
self._al_source = None
def delete(self):
if _debug:
print "OpenALAudioPlayer.delete()"
if not self._al_source:
return
context.worker.remove(self)
self._lock.acquire()
context.lock()
al.alDeleteSources(1, self._al_source)
bufferPool.deleteSource(self._al_source)
if _debug_buffers:
error = al.alGetError()
if error != 0:
print ("DELETE ERROR: " + str(error))
context.unlock()
self._al_source = None
self._lock.release()
def getBuffers(self, alSource, i):
"""Returns an array containing i buffer names. The returned list must
not be modified in any way, and may get changed by subsequent
calls to getBuffers.
"""
assert context._lock.locked()
buffs = []
try:
while i > 0:
b = self._buffers.pop()
if not al.alIsBuffer(b):
# Protect against implementations that DO free buffers
# when they delete a source - carry on.
if _debug_buffers:
print("Found a bad buffer")
continue
buffs.append(b)
i -= 1
except IndexError:
while i > 0:
buffer = al.ALuint()
al.alGenBuffers(1, buffer)
if _debug_buffers:
error = al.alGetError()
if error != 0:
print("GEN BUFFERS: " + str(error))
buffs.append(buffer)
i -= 1
alSourceVal = alSource.value
if alSourceVal not in self._sources:
self._sources[alSourceVal] = buffs
else:
self._sources[alSourceVal].extend(buffs)
return buffs
def getBuffers(self, alSource, i):
"""Returns an array containing i buffer names. The returned list must
not be modified in any way, and may get changed by subsequent calls to
getBuffers.
"""
assert context._lock.locked()
buffs = []
try:
while i > 0:
b = self._buffers.pop()
if not al.alIsBuffer(b):
# Protect against implementations that DO free buffers
# when they delete a source - carry on.
if _debug_buffers:
print("Found a bad buffer")
continue
buffs.append(b)
i -= 1
except IndexError:
while i > 0:
buffer = al.ALuint()
al.alGenBuffers(1, buffer)
if _debug_buffers:
error = al.alGetError()
if error != 0:
print("GEN BUFFERS: " + str(error))
buffs.append(buffer)
i -= 1
alSourceVal = alSource.value
if alSourceVal not in self._sources:
self._sources[alSourceVal] = buffs
else:
self._sources[alSourceVal].extend(buffs)
return buffs
def _update_play_cursor(self):
if not self._al_source:
return
self._lock.acquire()
context.lock()
# Release spent buffers
processed = al.ALint()
al.alGetSourcei(self._al_source, al.AL_BUFFERS_PROCESSED, processed)
processed = processed.value
if processed:
buffers = (al.ALuint * processed)()
al.alSourceUnqueueBuffers(self._al_source, len(buffers), buffers)
error = al.alGetError()
if error != 0:
if _debug_buffers:
print("Source unqueue error: " + str(error))
else:
for b in buffers:
bufferPool.dequeueBuffer(self._al_source, b)
context.unlock()
if processed:
if (len(self._buffer_timestamps) == processed
and self._buffer_timestamps[-1] is not None):
# Underrun, take note of timestamp.
# We check that the timestamp is not None, because otherwise
# our source could have been cleared.
self._underrun_timestamp = \
self._buffer_timestamps[-1] + \
self._buffer_sizes[-1] / \
float(self.source_group.audio_format.bytes_per_second)
self._buffer_cursor += sum(self._buffer_sizes[:processed])
del self._buffer_sizes[:processed]
del self._buffer_timestamps[:processed]
if not context.have_1_1:
self._buffer_system_time = time.time()
# Update play cursor using buffer cursor + estimate into current
# buffer
if context.have_1_1:
bytes = al.ALint()
context.lock()
al.alGetSourcei(self._al_source, al.AL_BYTE_OFFSET, bytes)
context.unlock()
if _debug:
print 'got bytes offset', bytes.value
self._play_cursor = self._buffer_cursor + bytes.value
else:
# Interpolate system time past buffer timestamp
self._play_cursor = \
self._buffer_cursor + int(
(time.time() - self._buffer_system_time) * \
self.source_group.audio_format.bytes_per_second)
# Process events
while self._events and self._events[0][0] < self._play_cursor:
_, event = self._events.pop(0)
event._sync_dispatch_to_player(self.player)
self._lock.release()
