def get_buffer(self):
if not self:
buffer = al.ALuint()
al.alGenBuffers(1, buffer)
else:
buffer = self.pop(0)
return buffer
def get_buffer(self):
if not self:
buffer = al.ALuint()
al.alGenBuffers(1, buffer)
else:
buffer = self.pop(0)
return buffer
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))
buffer = al.ALuint()
context.lock()
al.alGenBuffers(1, buffer)
al.alBufferData(buffer,
self._al_format,
audio_data.data,
audio_data.length,
self.source_group.audio_format.sample_rate)
al.alSourceQueueBuffers(self._al_source, 1, ctypes.byref(buffer))
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, mt_media.MediaEvent(0, 'on_eos')))
self._events.append(
(self._write_cursor,
mt_media.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))
buffer = al.ALuint()
context.lock()
al.alGenBuffers(1, buffer)
al.alBufferData(buffer, self._al_format, audio_data.data,
audio_data.length,
self.source_group.audio_format.sample_rate)
al.alSourceQueueBuffers(self._al_source, 1, ctypes.byref(buffer))
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 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
