def _create_decoder_pipeline(self, filename, file):
if file is None:
# Hooray, can just use filename
src = gst.gst_element_factory_make('filesrc', 'src')
gobject.g_object_set(src, 'location', filename, None)
else:
# Boo, use PythonFileObjectSrc
src = gst.gst_element_factory_make('pyfileobjectsrc', 'src')
pysrc = PythonFileObjectSrc.get_instance(src)
pysrc.init(file)
# Don't GC the source
self._file_source = pysrc
# Create pipeline to manage pause/play state.
pipeline = gst.gst_pipeline_new('pipeline')
# Create decodebin to find audio and video streams in file
decoder = gst.gst_element_factory_make('decodebin', 'decoder')
self._new_decoded_pad_func = DecodebinNewDecodedPad(
self._new_decoded_pad)
self._no_more_pads_func = DecodebinNoMorePads(self._no_more_pads)
gobject.g_signal_connect_data(decoder, 'new-decoded-pad',
self._new_decoded_pad_func, None, None, 0)
gobject.g_signal_connect_data(decoder, 'no-more-pads',
self._no_more_pads_func, None, None, 0)
gst.gst_bin_add_many(pipeline, src, decoder, None)
gst.gst_element_link(src, decoder)
# Create audioconvert
self.convert = gst.gst_element_factory_make('audioconvert', 'convert')
gst.gst_bin_add(pipeline, self.convert)
return pipeline
def __init__(self, filename, file):
super(GstreamerOpenALStreamingSound, self).__init__()
self._pipeline = self._create_decoder_pipeline(filename, file)
self.sink = gst.gst_element_factory_make('openalstreamingsink', 'sink')
gst.gst_bin_add(self._pipeline, self.sink)
gst.gst_element_link(self.convert, self.sink)
gst.gst_element_set_state(self._pipeline, gstreamer.GST_STATE_PAUSED)
def __init__(self, filename, file=None):
super(GstreamerOpenALStaticMedium, self).__init__()
self._pipeline = self._create_decoder_pipeline(filename, file)
self._sink = gst.gst_element_factory_make('openalstaticsink', 'sink')
gst.gst_bin_add(self._pipeline, self._sink)
gst.gst_element_link(self.convert, self._sink)
self._element = OpenALStaticSinkElement.get_instance(self._sink)
self._element.init()
gst.gst_element_set_state(self._pipeline, gstreamer.GST_STATE_PLAYING)
def __init__(self, filename, file):
super(GstreamerOpenALStreamingVideo, self).__init__()
# Block frame format until width/height arrives
self._frame_format_semaphore = threading.Semaphore(0)
self._pipeline = self._create_decoder_pipeline(filename, file)
self.sink = gst.gst_element_factory_make('openalstreamingsink', 'sink')
gst.gst_bin_add(self._pipeline, self.sink)
gst.gst_element_link(self.convert, self.sink)
self.videoconvert = \
gst.gst_element_factory_make('ffmpegcolorspace', 'videoconvert')
gst.gst_bin_add(self._pipeline, self.videoconvert)
gst.gst_element_link(self.videoconvert, self.sink)
gst.gst_element_set_state(self._pipeline, gstreamer.GST_STATE_PAUSED)
self._frames = [] # queued upcoming video frames
self._last_frame_timestamp = 0.
