def data(self, audio_data, audio_format, length=None):
assert self.is_valid
length = length or audio_data.length
try:
al_format = self._format_map[(audio_format.channels,
audio_format.sample_size)]
except KeyError:
raise MediaException('Unsupported sample size')
al.alBufferData(self._al_buffer, al_format, audio_data.data, length,
audio_format.sample_rate)
self._check_error('Failed to add data to buffer.')
def get_queue_source(self):
"""Return the ``Source`` to be used as the source for a player.
Default implementation returns self.
Returns:
:class:`.Source`
"""
if self.is_player_source:
raise MediaException(
'This source is already a source on a player.')
self.is_player_source = True
return self
def create_sample_spec(self, audio_format):
"""
Create a PulseAudio sample spec from pyglet audio format.
"""
sample_spec = pa.pa_sample_spec()
if audio_format.sample_size == 8:
sample_spec.format = pa.PA_SAMPLE_U8
elif audio_format.sample_size == 16:
if sys.byteorder == 'little':
sample_spec.format = pa.PA_SAMPLE_S16LE
else:
sample_spec.format = pa.PA_SAMPLE_S16BE
else:
raise MediaException('Unsupported sample size')
sample_spec.rate = audio_format.sample_rate
sample_spec.channels = audio_format.channels
return sample_spec
