def test_music_delivery_callback(self, lib_mock):
sp_audioformat = spotify.ffi.new('sp_audioformat *')
sp_audioformat.channels = 2
audio_format = spotify.AudioFormat(sp_audioformat)
num_frames = 10
frames_size = audio_format.frame_size() * num_frames
frames = spotify.ffi.new('char[]', frames_size)
frames[0:3] = [b'a', b'b', b'c']
frames_void_ptr = spotify.ffi.cast('void *', frames)
callback = mock.Mock()
callback.return_value = num_frames
session = tests.create_real_session(lib_mock)
session.on('music_delivery', callback)
result = _SessionCallbacks.music_delivery(session._sp_session,
sp_audioformat,
frames_void_ptr, num_frames)
callback.assert_called_once_with(session, mock.ANY, mock.ANY,
num_frames)
self.assertEqual(callback.call_args[0][1]._sp_audioformat,
sp_audioformat)
self.assertEqual(callback.call_args[0][2][:5], b'abc\x00\x00')
self.assertEqual(result, num_frames)
def setUp(self):
self._sp_audioformat = spotify.ffi.new('sp_audioformat *')
self._sp_audioformat.sample_type = (
spotify.SampleType.INT16_NATIVE_ENDIAN)
self._sp_audioformat.sample_rate = 44100
self._sp_audioformat.channels = 2
self.audio_format = spotify.AudioFormat(self._sp_audioformat)
def music_delivery(sp_session, sp_audioformat, frames, num_frames):
if not spotify.session_instance:
return 0
if spotify.session_instance.num_listeners(
SessionEvent.MUSIC_DELIVERY) == 0:
logger.debug('Got music delivery, but no event listener')
return 0
logger.debug('Got music delivery of %d frames', num_frames)
audio_format = spotify.AudioFormat(sp_audioformat)
buffer_ = ffi.buffer(frames, audio_format.frame_size() * num_frames)
frames_bytes = buffer_[:]
return spotify.session_instance.call(SessionEvent.MUSIC_DELIVERY,
spotify.session_instance,
audio_format, frames_bytes,
num_frames)
def music_delivery(sp_session, sp_audioformat, frames, num_frames):
if not spotify._session_instance:
return 0
if spotify._session_instance.num_listeners(
SessionEvent.MUSIC_DELIVERY) == 0:
logger.debug('Music delivery, but no listener')
return 0
audio_format = spotify.AudioFormat(sp_audioformat)
frames_buffer = ffi.buffer(frames,
audio_format.frame_size() * num_frames)
frames_bytes = frames_buffer[:]
num_frames_consumed = spotify._session_instance.call(
SessionEvent.MUSIC_DELIVERY, spotify._session_instance,
audio_format, frames_bytes, num_frames)
logger.debug('Music delivery of %d frames, %d consumed', num_frames,
num_frames_consumed)
return num_frames_consumed