def __init__(self, filename, file=None):
if file is not None:
raise NotImplementedError('TODO: Load from file stream')
self._file = av.avbin_open_filename(filename)
if not self._file:
raise AVbinException('Could not open "%s"' % filename)
self._video_stream = None
self._video_stream_index = -1
self._audio_stream = None
self._audio_stream_index = -1
file_info = AVbinFileInfo()
file_info.structure_size = ctypes.sizeof(file_info)
av.avbin_file_info(self._file, ctypes.byref(file_info))
self._duration = timestamp_from_avbin(file_info.duration)
self.info = SourceInfo()
self.info.title = file_info.title
self.info.author = file_info.author
self.info.copyright = file_info.copyright
self.info.comment = file_info.comment
self.info.album = file_info.album
self.info.year = file_info.year
self.info.track = file_info.track
self.info.genre = file_info.genre
# Pick the first video and audio streams found, ignore others.
for i in range(file_info.n_streams):
info = AVbinStreamInfo8()
info.structure_size = ctypes.sizeof(info)
av.avbin_stream_info(self._file, i, info)
if (info.type == AVBIN_STREAM_TYPE_VIDEO and
not self._video_stream):
stream = av.avbin_open_stream(self._file, i)
if not stream:
continue
self.video_format = VideoFormat(
width=info.u.video.width,
height=info.u.video.height)
if info.u.video.sample_aspect_num != 0:
self.video_format.sample_aspect = (
float(info.u.video.sample_aspect_num) /
info.u.video.sample_aspect_den)
if _have_frame_rate:
self.video_format.frame_rate = (
float(info.u.video.frame_rate_num) /
info.u.video.frame_rate_den)
self._video_stream = stream
self._video_stream_index = i
elif (info.type == AVBIN_STREAM_TYPE_AUDIO and
info.u.audio.sample_bits in (8, 16) and
info.u.audio.channels in (1, 2) and
not self._audio_stream):
stream = av.avbin_open_stream(self._file, i)
if not stream:
continue
self.audio_format = AudioFormat(
channels=info.u.audio.channels,
sample_size=info.u.audio.sample_bits,
sample_rate=info.u.audio.sample_rate)
self._audio_stream = stream
self._audio_stream_index = i
self._packet = AVbinPacket()
self._packet.structure_size = ctypes.sizeof(self._packet)
self._packet.stream_index = -1
self._events = []
# Timestamp of last video packet added to decoder queue.
self._video_timestamp = 0
self._buffered_audio_data = []
if self.audio_format:
self._audio_buffer = \
(ctypes.c_uint8 * av.avbin_get_audio_buffer_size())()
if self.video_format:
self._video_packets = []
self._decode_thread = WorkerThread()
self._decode_thread.start()
self._condition = threading.Condition()
