# -*- Mode: Python -*-
# vi:si:et:sw=4:sts=4:ts=4
#
# gst-python - Python bindings for GStreamer
# Copyright (C) 2002 David I. Lehn
# Copyright (C) 2004 Johan Dahlin
# Copyright (C) 2005 Edward Hervey
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
from common import gst, unittest, TestCase, pygobject_2_13
import sys
import gc
import gobject
class SrcBin(gst.Bin):
def prepare(self):
src = gst.element_factory_make('fakesrc')
self.add(src)
pad = src.get_pad("src")
ghostpad = gst.GhostPad("src", pad)
self.add_pad(ghostpad)
gobject.type_register(SrcBin)
class SinkBin(gst.Bin):
def prepare(self):
sink = gst.element_factory_make('fakesink')
self.add(sink)
pad = sink.get_pad("sink")
ghostpad = gst.GhostPad("sink", pad)
self.add_pad(ghostpad)
self.sink = sink
def connect_handoff(self, cb, *args, **kwargs):
self.sink.set_property('signal-handoffs', True)
self.sink.connect('handoff', cb, *args, **kwargs)
gobject.type_register(SinkBin)
class PipeTest(TestCase):
def setUp(self):
gst.info("setUp")
TestCase.setUp(self)
self.pipeline = gst.Pipeline()
self.assertEquals(self.pipeline.__gstrefcount__, 1)
self.assertEquals(sys.getrefcount(self.pipeline), pygobject_2_13 and 2 or 3)
self.src = SrcBin()
self.src.prepare()
self.sink = SinkBin()
self.sink.prepare()
self.assertEquals(self.src.__gstrefcount__, 1)
self.assertEquals(sys.getrefcount(self.src), pygobject_2_13 and 2 or 3)
self.assertEquals(self.sink.__gstrefcount__, 1)
self.assertEquals(sys.getrefcount(self.sink), pygobject_2_13 and 2 or 3)
gst.info("end of SetUp")
def tearDown(self):
gst.info("tearDown")
self.assertTrue (self.pipeline.__gstrefcount__ >= 1 and self.pipeline.__gstrefcount__ <= 2)
self.assertEquals(sys.getrefcount(self.pipeline), pygobject_2_13 and 2 or 3)
self.assertEquals(self.src.__gstrefcount__, 2)
self.assertEquals(sys.getrefcount(self.src), pygobject_2_13 and 2 or 3)
self.assertEquals(self.sink.__gstrefcount__, 2)
self.assertEquals(sys.getrefcount(self.sink), 3)
gst.debug('deleting pipeline')
del self.pipeline
self.gccollect()
self.assertEquals(self.src.__gstrefcount__, 1) # parent gone
self.assertEquals(self.sink.__gstrefcount__, 1) # parent gone
self.assertEquals(sys.getrefcount(self.src), pygobject_2_13 and 2 or 3)
self.assertEquals(sys.getrefcount(self.sink), pygobject_2_13 and 2 or 3)
gst.debug('deleting src')
del self.src
self.gccollect()
gst.debug('deleting sink')
del self.sink
self.gccollect()
TestCase.tearDown(self)
def testBinState(self):
self.pipeline.add(self.src, self.sink)
self.src.link(self.sink)
self.sink.connect_handoff(self._sink_handoff_cb)
self._handoffs = 0
self.assertTrue(self.pipeline.set_state(gst.STATE_PLAYING) != gst.STATE_CHANGE_FAILURE)
while True:
(ret, cur, pen) = self.pipeline.get_state()
if ret == gst.STATE_CHANGE_SUCCESS and cur == gst.STATE_PLAYING:
break
while self._handoffs < 10:
pass
self.assertEquals(self.pipeline.set_state(gst.STATE_NULL), gst.STATE_CHANGE_SUCCESS)
while True:
(ret, cur, pen) = self.pipeline.get_state()
if ret == gst.STATE_CHANGE_SUCCESS and cur == gst.STATE_NULL:
break
## def testProbedLink(self):
## self.pipeline.add(self.src)
## pad = self.src.get_pad("src")
## self.sink.connect_handoff(self._sink_handoff_cb)
## self._handoffs = 0
## # FIXME: adding a probe to the ghost pad does not work atm
## # id = pad.add_buffer_probe(self._src_buffer_probe_cb)
## realpad = pad.get_target()
## self._probe_id = realpad.add_buffer_probe(self._src_buffer_probe_cb)
## self._probed = False
## while True:
## (ret, cur, pen) = self.pipeline.get_state()
## if ret == gst.STATE_CHANGE_SUCCESS and cur == gst.STATE_PLAYING:
## break
## while not self._probed:
## pass
## while self._handoffs < 10:
## pass
## self.pipeline.set_state(gst.STATE_NULL)
## while True:
## (ret, cur, pen) = self.pipeline.get_state()
## if ret == gst.STATE_CHANGE_SUCCESS and cur == gst.STATE_NULL:
## break
def _src_buffer_probe_cb(self, pad, buffer):
gst.debug("received probe on pad %r" % pad)
self._probed = True
gst.debug('adding sink bin')
self.pipeline.add(self.sink)
# this seems to get rid of the warnings about pushing on an unactivated
# pad
gst.debug('setting sink state')
# FIXME: attempt one: sync to current pending state of bin
(res, cur, pen) = self.pipeline.get_state(timeout=0)
target = pen
if target == gst.STATE_VOID_PENDING:
target = cur
gst.debug("setting sink state to %r" % target)
# FIXME: the following print can cause a lock-up; why ?
# print target
# if we don't set async, it will possibly end up in PAUSED
self.sink.set_state(target)
gst.debug('linking')
self.src.link(self.sink)
gst.debug('removing buffer probe id %r' % self._probe_id)
pad.remove_buffer_probe(self._probe_id)
self._probe_id = None
gst.debug('done')
def _sink_handoff_cb(self, sink, buffer, pad):
gst.debug('received handoff on pad %r' % pad)
self._handoffs += 1
class TargetTest(TestCase):
def test_target(self):
src = gst.Pad("src", gst.PAD_SRC)
ghost = gst.GhostPad("ghost_src", src)
self.failUnless(ghost.get_target() is src)
ghost.set_target(None)
self.failUnless(ghost.get_target() is None)
ghost.set_target(src)
self.failUnless(ghost.get_target() is src)
if __name__ == "__main__":
unittest.main()