def _load_audio_source(log_api: LogApi, uid: uuid.UUID,
path: Path) -> Optional[ffms2.AudioSource]:
"""Create FFMS audio source.
:param log_api: logging API
:param uid: uid of the stream (for logging)
:param path: path to the audio file
:return: resulting FFMS audio source or None if failed to create
"""
log_api.info(f"audio {uid} started loading ({path})")
if not path.exists():
log_api.error(f"error loading audio {uid} (file {path} not found)")
return None
try:
indexer = ffms2.Indexer(str(path))
for track in indexer.track_info_list:
indexer.track_index_settings(track.num, 1, 0)
index = indexer.do_indexing2()
except ffms2.Error as ex:
log_api.error(f"error loading audio {uid} ({ex})")
return None
try:
track_number = index.get_first_indexed_track_of_type(
ffms2.FFMS_TYPE_AUDIO)
source = ffms2.AudioSource(str(path), track_number, index)
except ffms2.Error as ex:
log_api.error(f"error loading audio {uid} ({ex})")
return None
else:
log_api.info(f"audio {uid} finished loading")
return source
def _load_video_source(log_api: LogApi, uid: uuid.UUID,
path: Path) -> T.Optional[ffms2.VideoSource]:
"""Create video source.
:param log_api: logging API
:param uid: uid of the stream (for logging)
:param path: path to the video file
:return: input path and resulting video source
"""
log_api.info(f"video {uid} started loading ({path})")
if not path.exists():
log_api.error(f"error loading video {uid} (file {path} not found)")
return None
try:
source = ffms2.VideoSource(str(path))
except ffms2.Error as ex:
log_api.error(f"error loading video {uid} ({ex})")
return None
else:
log_api.info(f"video {uid} finished loading")
return source