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# vi:si:et:sw=4:sts=4:ts=4
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# gst-python - Python bindings for GStreamer
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# Copyright (C) 2002 David I. Lehn
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# Copyright (C) 2004 Johan Dahlin
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# Copyright (C) 2005 Edward Hervey
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from common import gst, unittest, TestCase
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class SrcBin(gst.Bin):
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src = gst.element_factory_make('fakesrc')
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pad = src.get_pad("src")
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ghostpad = gst.GhostPad("src", pad)
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self.add_pad(ghostpad)
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gobject.type_register(SrcBin)
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class SinkBin(gst.Bin):
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sink = gst.element_factory_make('fakesink')
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pad = sink.get_pad("sink")
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ghostpad = gst.GhostPad("sink", pad)
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self.add_pad(ghostpad)
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def connect_handoff(self, cb, *args, **kwargs):
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self.sink.set_property('signal-handoffs', True)
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self.sink.connect('handoff', cb, *args, **kwargs)
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gobject.type_register(SinkBin)
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class PipeTest(TestCase):
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self.pipeline = gst.Pipeline()
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self.assertEquals(self.pipeline.__gstrefcount__, 1)
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self.assertEquals(sys.getrefcount(self.pipeline), 3)
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self.assertEquals(self.src.__gstrefcount__, 1)
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self.assertEquals(sys.getrefcount(self.src), 3)
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self.assertEquals(self.sink.__gstrefcount__, 1)
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self.assertEquals(sys.getrefcount(self.sink), 3)
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gst.info("end of SetUp")
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self.assertTrue (self.pipeline.__gstrefcount__ >= 1 and self.pipeline.__gstrefcount__ <= 2)
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self.assertEquals(sys.getrefcount(self.pipeline), 3)
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self.assertEquals(self.src.__gstrefcount__, 2)
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self.assertEquals(sys.getrefcount(self.src), 3)
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self.assertEquals(self.sink.__gstrefcount__, 2)
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self.assertEquals(sys.getrefcount(self.sink), 3)
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gst.debug('deleting pipeline')
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self.assertEquals(self.src.__gstrefcount__, 1) # parent gone
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self.assertEquals(self.sink.__gstrefcount__, 1) # parent gone
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self.assertEquals(sys.getrefcount(self.src), 3)
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self.assertEquals(sys.getrefcount(self.sink), 3)
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gst.debug('deleting src')
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gst.debug('deleting sink')
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TestCase.tearDown(self)
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def testBinState(self):
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self.pipeline.add(self.src, self.sink)
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self.src.link(self.sink)
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self.sink.connect_handoff(self._sink_handoff_cb)
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self.assertTrue(self.pipeline.set_state(gst.STATE_PLAYING) != gst.STATE_CHANGE_FAILURE)
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(ret, cur, pen) = self.pipeline.get_state()
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if ret == gst.STATE_CHANGE_SUCCESS and cur == gst.STATE_PLAYING:
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while self._handoffs < 10:
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self.assertEquals(self.pipeline.set_state(gst.STATE_NULL), gst.STATE_CHANGE_SUCCESS)
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(ret, cur, pen) = self.pipeline.get_state()
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if ret == gst.STATE_CHANGE_SUCCESS and cur == gst.STATE_NULL:
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## def testProbedLink(self):
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## self.pipeline.add(self.src)
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## pad = self.src.get_pad("src")
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## self.sink.connect_handoff(self._sink_handoff_cb)
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## self._handoffs = 0
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## # FIXME: adding a probe to the ghost pad does not work atm
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## # id = pad.add_buffer_probe(self._src_buffer_probe_cb)
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## realpad = pad.get_target()
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## self._probe_id = realpad.add_buffer_probe(self._src_buffer_probe_cb)
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## self._probed = False
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## (ret, cur, pen) = self.pipeline.get_state()
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## if ret == gst.STATE_CHANGE_SUCCESS and cur == gst.STATE_PLAYING:
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## while not self._probed:
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## while self._handoffs < 10:
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## self.pipeline.set_state(gst.STATE_NULL)
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## (ret, cur, pen) = self.pipeline.get_state()
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## if ret == gst.STATE_CHANGE_SUCCESS and cur == gst.STATE_NULL:
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def _src_buffer_probe_cb(self, pad, buffer):
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gst.debug("received probe on pad %r" % pad)
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gst.debug('adding sink bin')
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self.pipeline.add(self.sink)
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# this seems to get rid of the warnings about pushing on an unactivated
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gst.debug('setting sink state')
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# FIXME: attempt one: sync to current pending state of bin
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(res, cur, pen) = self.pipeline.get_state(timeout=0)
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if target == gst.STATE_VOID_PENDING:
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gst.debug("setting sink state to %r" % target)
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# FIXME: the following print can cause a lock-up; why ?
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# if we don't set async, it will possibly end up in PAUSED
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self.sink.set_state(target)
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self.src.link(self.sink)
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gst.debug('removing buffer probe id %r' % self._probe_id)
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pad.remove_buffer_probe(self._probe_id)
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self._probe_id = None
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def _sink_handoff_cb(self, sink, buffer, pad):
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gst.debug('received handoff on pad %r' % pad)
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if __name__ == "__main__":
added
removed
testsuite/test_ghostpad.py
