def testMatchStreamNoMatch(self):
s1 = AudioStream(gst.Caps("audio/x-vorbis"))
s2 = VideoStream(gst.Caps("video/x-theora"))
stream, rank = match_stream(s1, [])
self.failUnlessEqual(stream, None)
self.failUnlessEqual(rank, STREAM_MATCH_NONE)
stream, rank = match_stream(s1, [s2])
self.failUnlessEqual(stream, None)
self.failUnlessEqual(rank, STREAM_MATCH_NONE)
def testMatchStreamSameNameAndCompatibleCaps(self):
s1 = AudioStream(gst.Caps("audio/x-vorbis, a={1, 2}"), pad_name="src0")
s2 = AudioStream(gst.Caps("audio/x-vorbis, a={2, 3}"), pad_name="src0")
stream, rank = match_stream(s1, [s2])
self.failUnlessEqual(id(s2), id(stream))
self.failUnlessEqual(rank,
STREAM_MATCH_SAME_PAD_NAME + STREAM_MATCH_COMPATIBLE_CAPS)
def testMatchSamePadName(self):
s1 = AudioStream(gst.Caps("audio/x-vorbis"), pad_name="src0")
s2 = AudioStream(gst.Caps("audio/x-speex"), pad_name="src0")
stream, rank = match_stream(s1, [s2])
self.failUnlessEqual(id(s2), id(stream))
self.failUnlessEqual(rank, STREAM_MATCH_SAME_PAD_NAME +
STREAM_MATCH_SAME_TYPE)
def testMatchStreamSameNameAndSameCaps(self):
s1 = AudioStream(gst.Caps("audio/x-vorbis"), pad_name="src0")
s2 = AudioStream(gst.Caps("audio/x-vorbis"), pad_name="src0")
stream, rank = match_stream(s1, [s2])
self.failUnlessEqual(id(s2), id(stream))
self.failUnlessEqual(
rank, STREAM_MATCH_SAME_PAD_NAME + STREAM_MATCH_SAME_CAPS)
self.failUnlessEqual(rank, STREAM_MATCH_MAXIMUM)
def testMatchStreamSameNameAndSameCaps(self):
s1 = AudioStream(gst.Caps("audio/x-vorbis"), pad_name="src0")
s2 = AudioStream(gst.Caps("audio/x-vorbis"), pad_name="src0")
stream, rank = match_stream(s1, [s2])
self.failUnlessEqual(id(s2), id(stream))
self.failUnlessEqual(rank,
STREAM_MATCH_SAME_PAD_NAME + STREAM_MATCH_SAME_CAPS)
self.failUnlessEqual(rank, STREAM_MATCH_MAXIMUM)
def getTeeForFactoryStream(self, factory, stream=None, automake=False):
"""
Fetches the C{Tee} currently used in the C{gst.Pipeline} for the given
L{SourceFactory}.
@param factory: The factory to search.
@type factory: L{SourceFactory}
@param stream: The stream of the factory to use. If not specified, then
a random stream from that factory will be used.
@type stream: L{MultimediaStream}
@param automake: If set to True, then if there is not a C{Tee}
already created for the given factory/stream, one will be created, added
to the list of controlled tees and added to the C{gst.Pipeline}.
@raise PipelineError: If the factory isn't used in this pipeline.
@raise PipelineError: If the factory isn't a L{SourceFactory}.
@raise PipelineError: If a C{Tee} needed to be created but the
creation of that C{Tee} failed.
@return: The C{Tee} corresponding to the given factory/stream or None if
there are none for the given factory.
@rtype: C{gst.Element}
"""
self.debug("factory:%r , stream:%r, automake:%r", factory, stream, automake)
if not isinstance(factory, SourceFactory):
raise PipelineError("Given ObjectFactory isn't a SourceFactory")
stream_entry = self._getStreamEntryForFactoryStream(factory, stream)
bin_stream_entry = stream_entry.findBinEntry()
if bin_stream_entry is None:
raise PipelineError("couldn't find bin entry")
bin = bin_stream_entry.bin
if stream_entry.tee is not None:
stream_entry.tee_use_count += 1
# have an existing tee, return it
return stream_entry.tee
if not automake:
raise PipelineError("no automake")
self.debug("Really creating a tee")
# get the source pads
pads = get_src_pads_for_stream(bin, None)
# get the corresponding streams
streams = [get_stream_for_pad(pad, store_pad=True) for pad in pads]
# find the pad that matches the given stream best
if stream is None:
if len(streams) == 1:
stream = streams[0]
else:
raise PipelineError("bin has multiple compatible pads")
stream, rank = match_stream(stream, streams)
if stream is None:
raise PipelineError("bin has no compatible source pads")
srcpad = stream.pad
self.debug("Using pad %r", srcpad)
stream_entry.tee = gst.element_factory_make("tee")
self._pipeline.add(stream_entry.tee)
stream_entry.tee_use_count += 1
stream_entry.tee.set_state(STATE_PAUSED)
self.debug("Linking pad %r to tee", pads[0])
srcpad.link_full(stream_entry.tee.get_pad("sink"),
gst.PAD_LINK_CHECK_NOTHING)
return stream_entry.tee
def testMatchStreamCompatibleCaps(self):
s1 = AudioStream(gst.Caps("audio/x-vorbis, a={1, 2}"))
s2 = AudioStream(gst.Caps("audio/x-vorbis, a={2, 3}"))
stream, rank = match_stream(s1, [s2])
self.failUnlessEqual(id(s2), id(stream))
self.failUnlessEqual(rank, STREAM_MATCH_COMPATIBLE_CAPS)
def testMatchStreamSameCaps(self):
s1 = AudioStream(gst.Caps("audio/x-vorbis, a=1"))
s2 = AudioStream(gst.Caps("audio/x-vorbis, a=2"))
stream, rank = match_stream(s1, [s1, s2])
self.failUnlessEqual(id(s1), id(stream))
self.failUnlessEqual(rank, STREAM_MATCH_SAME_CAPS)
def getTeeForFactoryStream(self, factory, stream=None, automake=False):
"""
Fetches the C{Tee} currently used in the C{gst.Pipeline} for the given
L{SourceFactory}.
@param factory: The factory to search.
@type factory: L{SourceFactory}
@param stream: The stream of the factory to use. If not specified, then
a random stream from that factory will be used.
@type stream: L{MultimediaStream}
@param automake: If set to True, then if there is not a C{Tee}
already created for the given factory/stream, one will be created, added
to the list of controlled tees and added to the C{gst.Pipeline}.
@raise PipelineError: If the factory isn't used in this pipeline.
@raise PipelineError: If the factory isn't a L{SourceFactory}.
@raise PipelineError: If a C{Tee} needed to be created but the
creation of that C{Tee} failed.
@return: The C{Tee} corresponding to the given factory/stream or None if
there are none for the given factory.
@rtype: C{gst.Element}
"""
self.debug("factory:%r , stream:%r, automake:%r", factory, stream,
automake)
if not isinstance(factory, SourceFactory):
raise PipelineError("Given ObjectFactory isn't a SourceFactory")
stream_entry = self._getStreamEntryForFactoryStream(factory, stream)
bin_stream_entry = stream_entry.findBinEntry()
if bin_stream_entry is None:
raise PipelineError("couldn't find bin entry")
bin = bin_stream_entry.bin
if stream_entry.tee is not None:
stream_entry.tee_use_count += 1
# have an existing tee, return it
return stream_entry.tee
if not automake:
raise PipelineError("no automake")
self.debug("Really creating a tee")
# get the source pads
pads = get_src_pads_for_stream(bin, None)
# get the corresponding streams
streams = [get_stream_for_pad(pad, store_pad=True) for pad in pads]
# find the pad that matches the given stream best
if stream is None:
if len(streams) == 1:
stream = streams[0]
else:
raise PipelineError("bin has multiple compatible pads")
stream, rank = match_stream(stream, streams)
if stream is None:
raise PipelineError("bin has no compatible source pads")
srcpad = stream.pad
self.debug("Using pad %r", srcpad)
stream_entry.tee = gst.element_factory_make("tee")
self._pipeline.add(stream_entry.tee)
stream_entry.tee_use_count += 1
stream_entry.tee.set_state(STATE_PAUSED)
self.debug("Linking pad %r to tee", pads[0])
srcpad.link(stream_entry.tee.get_pad("sink"))
return stream_entry.tee