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gstreamer/testsuite/test_pad.py
Simon Farnsworth c889037e40 Fix zip code of new FSF address 
I missed the zip code last time round - fix it. Thanks to Michael Schwendt
in https://bugzilla.redhat.com/show_bug.cgi?id=1034341#c11 for pointing this
out to me.

Signed-off-by: Simon Farnsworth <simon.farnsworth@onelan.co.uk>

https://bugzilla.gnome.org/show_bug.cgi?id=720317
2013-12-12 11:35:41 +00:00

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# -*- 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 time
class PadTemplateTest(TestCase):
def testConstructor(self):
template = gst.PadTemplate("template", gst.PAD_SINK,
gst.PAD_ALWAYS, gst.caps_from_string("audio/x-raw-int"))
self.failUnless(template)
self.assertEquals(sys.getrefcount(template), pygobject_2_13 and 2 or 3)
#self.assertEquals(template.__gstrefcount__, 1)
class PadPushUnlinkedTest(TestCase):
def setUp(self):
TestCase.setUp(self)
self.src = gst.Pad("src", gst.PAD_SRC)
self.sink = gst.Pad("sink", gst.PAD_SINK)
def tearDown(self):
self.assertEquals(sys.getrefcount(self.src), pygobject_2_13 and 2 or 3)
self.assertEquals(self.src.__gstrefcount__, 1)
del self.src
self.assertEquals(sys.getrefcount(self.sink), pygobject_2_13 and 2 or 3)
self.assertEquals(self.sink.__gstrefcount__, 1)
del self.sink
TestCase.tearDown(self)
def testNoProbe(self):
self.buffer = gst.Buffer()
self.assertEquals(self.buffer.__grefcount__, 1)
self.assertEquals(self.src.push(self.buffer), gst.FLOW_NOT_LINKED)
# pushing it takes a ref in the python wrapper to keep buffer
# alive afterwards; but the core unrefs the ref it receives
self.assertEquals(self.buffer.__grefcount__, 1)
def testFalseProbe(self):
id = self.src.add_buffer_probe(self._probe_handler, False)
self.buffer = gst.Buffer()
self.assertEquals(self.buffer.__grefcount__, 1)
self.assertEquals(self.src.push(self.buffer), gst.FLOW_OK)
self.assertEquals(self.buffer.__grefcount__, 1)
self.src.remove_buffer_probe(id)
def testTrueProbe(self):
id = self.src.add_buffer_probe(self._probe_handler, True)
self.buffer = gst.Buffer()
self.assertEquals(self.buffer.__grefcount__, 1)
self.assertEquals(self.src.push(self.buffer), gst.FLOW_NOT_LINKED)
self.assertEquals(self.buffer.__grefcount__, 1)
self.src.remove_buffer_probe(id)
def _probe_handler(self, pad, buffer, ret):
return ret
class PadPushLinkedTest(TestCase):
def setUp(self):
TestCase.setUp(self)
self.src = gst.Pad("src", gst.PAD_SRC)
self.sink = gst.Pad("sink", gst.PAD_SINK)
caps = gst.caps_from_string("foo/bar")
self.src.set_caps(caps)
self.sink.set_caps(caps)
self.sink.set_chain_function(self._chain_func)
self.src.set_active(True)
self.sink.set_active(True)
self.src.link(self.sink)
self.buffers = []
def tearDown(self):
self.assertEquals(sys.getrefcount(self.src), pygobject_2_13 and 2 or 3)
self.assertEquals(self.src.__gstrefcount__, 1)
self.src.set_caps(None)
del self.src
self.assertEquals(sys.getrefcount(self.sink), pygobject_2_13 and 2 or 3)
self.assertEquals(self.sink.__gstrefcount__, 1)
self.sink.set_caps(None)
del self.sink
TestCase.tearDown(self)
def _chain_func(self, pad, buffer):
gst.debug('got buffer %r, id %x, with GMO rc %d'% (
buffer, id(buffer), buffer.__grefcount__))
self.buffers.append(buffer)
return gst.FLOW_OK
def testNoProbe(self):
self.buffer = gst.Buffer()
gst.debug('created new buffer %r, id %x' % (
self.buffer, id(self.buffer)))
self.assertEquals(self.buffer.__grefcount__, 1)
gst.debug('pushing buffer on linked pad, no probe')
self.assertEquals(self.src.push(self.buffer), gst.FLOW_OK)
gst.debug('pushed buffer on linked pad, no probe')
# one refcount is held by our scope, another is held on
# self.buffers through _chain_func
self.assertEquals(self.buffer.__grefcount__, 2)
self.assertEquals(len(self.buffers), 1)
self.buffers = None
self.assertEquals(self.buffer.__grefcount__, 1)
def testFalseProbe(self):
id = self.src.add_buffer_probe(self._probe_handler, False)
self.buffer = gst.Buffer()
self.assertEquals(self.buffer.__grefcount__, 1)
self.assertEquals(self.src.push(self.buffer), gst.FLOW_OK)
self.assertEquals(self.buffer.__grefcount__, 1)
self.src.remove_buffer_probe(id)
self.assertEquals(len(self.buffers), 0)
def testTrueProbe(self):
probe_id = self.src.add_buffer_probe(self._probe_handler, True)
self.buffer = gst.Buffer()
self.assertEquals(self.buffer.__grefcount__, 1)
self.assertEquals(self.src.push(self.buffer), gst.FLOW_OK)
# one refcount is held by our scope, another is held on
# self.buffers through _chain_func
self.assertEquals(self.buffer.__grefcount__, 2)
# they are not the same Python object ...
self.failIf(self.buffer is self.buffers[0])
self.failIf(id(self.buffer) == id(self.buffers[0]))
# ... but they wrap the same GstBuffer
self.failUnless(self.buffer == self.buffers[0])
self.assertEquals(repr(self.buffer), repr(self.buffers[0]))
self.src.remove_buffer_probe(probe_id)
self.assertEquals(len(self.buffers), 1)
self.buffers = None
self.assertEquals(self.buffer.__grefcount__, 1)
def _probe_handler(self, pad, buffer, ret):
return ret
# test for event probes with linked pads
class PadPushEventLinkedTest(TestCase):
def setUp(self):
TestCase.setUp(self)
self.src = gst.Pad("src", gst.PAD_SRC)
self.sink = gst.Pad("sink", gst.PAD_SINK)
caps = gst.caps_from_string("foo/bar")
self.src.set_caps(caps)
self.sink.set_caps(caps)
self.sink.set_chain_function(self._chain_func)
self.src.set_active(True)
self.sink.set_active(True)
self.src.link(self.sink)
self.events = []
def tearDown(self):
self.assertEquals(sys.getrefcount(self.src), pygobject_2_13 and 2 or 3)
self.assertEquals(self.src.__gstrefcount__, 1)
self.src.set_caps(None)
del self.src
self.assertEquals(sys.getrefcount(self.sink), pygobject_2_13 and 2 or 3)
self.assertEquals(self.sink.__gstrefcount__, 1)
self.sink.set_caps(None)
del self.sink
TestCase.tearDown(self)
def _chain_func(self, pad, buffer):
gst.debug('got buffer %r, id %x, with GMO rc %d'% (
buffer, id(buffer), buffer.__grefcount__))
self.buffers.append(buffer)
return gst.FLOW_OK
def testNoProbe(self):
self.event = gst.event_new_eos()
gst.debug('created new eos %r, id %x' % (
self.event, id(self.event)))
self.assertEquals(self.event.__grefcount__, 1)
gst.debug('pushing event on linked pad, no probe')
self.assertEquals(self.src.push_event(self.event), True)
gst.debug('pushed event on linked pad, no probe')
# one refcount is held by our scope
self.assertEquals(self.event.__grefcount__, 1)
# the event has reffed the src pad as the src of the event
self.assertEquals(self.src.__grefcount__, 2)
# clear it
self.event = None
self.assertEquals(self.src.__grefcount__, 1)
def testFalseProbe(self):
probe_id = self.src.add_event_probe(self._probe_handler, False)
self.event = gst.event_new_eos()
gst.debug('created new eos %r, id %x' % (
self.event, id(self.event)))
self.assertEquals(self.event.__grefcount__, 1)
# a false probe return drops the event and returns False
self.assertEquals(self.src.push_event(self.event), False)
# one ref in our local scope, another in self.events
self.assertEquals(self.event.__grefcount__, 2)
self.assertEquals(self.sink.__grefcount__, 1)
# the event has reffed the src pad as the src of the event
self.assertEquals(self.src.__grefcount__, 2)
# remove the event from existence
self.event = None
self.events = None
self.assertEquals(self.src.__grefcount__, 1)
self.src.remove_buffer_probe(probe_id)
def testTrueProbe(self):
probe_id = self.src.add_event_probe(self._probe_handler, True)
self.event = gst.event_new_eos()
gst.debug('created new eos %r, id %x' % (
self.event, id(self.event)))
self.assertEquals(self.event.__grefcount__, 1)
# a True probe lets it pass
self.assertEquals(self.src.push_event(self.event), True)
# one refcount is held by our scope, another is held on
# self.events through _probe
self.assertEquals(self.event.__grefcount__, 2)
# they are not the same Python object ...
self.failIf(self.event is self.events[0])
self.failIf(id(self.event) == id(self.events[0]))
# ... but they wrap the same GstEvent
self.assertEquals(repr(self.event), repr(self.events[0]))
self.failUnless(self.event == self.events[0])
self.src.remove_buffer_probe(probe_id)
self.assertEquals(len(self.events), 1)
self.events = None
self.assertEquals(self.event.__grefcount__, 1)
# the event has reffed the src pad as the src of the event
self.assertEquals(self.src.__grefcount__, 2)
# clear it
self.event = None
self.assertEquals(self.src.__grefcount__, 1)
def _probe_handler(self, pad, event, ret):
gst.debug("probed, pad %r, event %r" % (pad, event))
self.events.append(event)
return ret
# a test to show that we can link a pad from the probe handler
class PadPushProbeLinkTest(TestCase):
def setUp(self):
TestCase.setUp(self)
self.src = gst.Pad("src", gst.PAD_SRC)
self.sink = gst.Pad("sink", gst.PAD_SINK)
caps = gst.caps_from_string("foo/bar")
self.src.set_caps(caps)
self.sink.set_caps(caps)
self.src.set_active(True)
self.sink.set_active(True)
self.sink.set_chain_function(self._chain_func)
self.buffers = []
def tearDown(self):
self.assertEquals(sys.getrefcount(self.src), pygobject_2_13 and 2 or 3)
self.assertEquals(self.src.__gstrefcount__, 1)
self.src.set_caps(None)
del self.src
self.assertEquals(sys.getrefcount(self.sink), pygobject_2_13 and 2 or 3)
self.assertEquals(self.sink.__gstrefcount__, 1)
self.sink.set_caps(None)
del self.sink
TestCase.tearDown(self)
def _chain_func(self, pad, buffer):
self.buffers.append(buffer)
return gst.FLOW_OK
def testProbeLink(self):
id = self.src.add_buffer_probe(self._probe_handler)
self.buffer = gst.Buffer()
self.assertEquals(self.buffer.__grefcount__, 1)
gst.debug('pushing buffer on linked pad, no probe')
self.assertEquals(self.src.push(self.buffer), gst.FLOW_OK)
gst.debug('pushed buffer on linked pad, no probe')
# one refcount is held by our scope, another is held on
# self.buffers through _chain_func
self.assertEquals(self.buffer.__grefcount__, 2)
self.assertEquals(len(self.buffers), 1)
self.buffers = None
self.assertEquals(self.buffer.__grefcount__, 1)
def _probe_handler(self, pad, buffer):
self.src.link(self.sink)
return True
class PadTest(TestCase):
def testConstructor(self):
# first style uses gst_pad_new
gst.debug('creating pad with name src')
pad = gst.Pad("src", gst.PAD_SRC)
self.failUnless(pad)
self.assertEquals(sys.getrefcount(pad), pygobject_2_13 and 2 or 3)
self.assertEquals(pad.__gstrefcount__, 1)
gst.debug('creating pad with no name')
self.failUnless(gst.Pad(None, gst.PAD_SRC))
self.failUnless(gst.Pad(name=None, direction=gst.PAD_SRC))
self.failUnless(gst.Pad(direction=gst.PAD_SRC, name=None))
self.failUnless(gst.Pad(direction=gst.PAD_SRC, name="src"))
# second uses gst_pad_new_from_template
#template = gst.PadTemplate()
class PadPipelineTest(TestCase):
def setUp(self):
TestCase.setUp(self)
self.pipeline = gst.parse_launch('fakesrc name=source ! fakesink')
src = self.pipeline.get_by_name('source')
self.srcpad = src.get_pad('src')
def tearDown(self):
del self.pipeline
del self.srcpad
TestCase.tearDown(self)
# FIXME: now that GstQuery is a miniobject with various _new_ factory
# functions, we need to figure out a way to deal with them in python
# def testQuery(self):
# assert self.sink.query(gst.QUERY_TOTAL, gst.FORMAT_BYTES) == -1
# assert self.srcpad.query(gst.QUERY_POSITION, gst.FORMAT_BYTES) == 0
# assert self.srcpad.query(gst.QUERY_POSITION, gst.FORMAT_TIME) == 0
class PadProbePipeTest(TestCase):
def setUp(self):
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.fakesrc = gst.element_factory_make('fakesrc')
self.fakesink = gst.element_factory_make('fakesink')
self.assertEquals(self.fakesrc.__gstrefcount__, 1)
self.assertEquals(sys.getrefcount(self.fakesrc), pygobject_2_13 and 2 or 3)
self.pipeline.add(self.fakesrc, self.fakesink)
self.assertEquals(self.fakesrc.__gstrefcount__, 2) # added
self.assertEquals(sys.getrefcount(self.fakesrc), pygobject_2_13 and 2 or 3)
self.assertEquals(self.fakesink.__gstrefcount__, 2) # added
self.assertEquals(sys.getrefcount(self.fakesink), pygobject_2_13 and 2 or 3)
self.fakesrc.link(self.fakesink)
self.assertEquals(self.pipeline.__gstrefcount__, 1)
self.assertEquals(sys.getrefcount(self.pipeline), pygobject_2_13 and 2 or 3)
self.assertEquals(self.fakesrc.__gstrefcount__, 2)
self.assertEquals(sys.getrefcount(self.fakesrc), pygobject_2_13 and 2 or 3)
self.assertEquals(self.fakesink.__gstrefcount__, 2)
self.assertEquals(sys.getrefcount(self.fakesink), pygobject_2_13 and 2 or 3)
def tearDown(self):
# Refcount must be either 1 or 2, to allow for a possibly still running
# state-recalculation thread
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.fakesrc.__gstrefcount__, 2)
self.assertEquals(sys.getrefcount(self.fakesrc), pygobject_2_13 and 2 or 3)
gst.debug('deleting pipeline')
del self.pipeline
self.gccollect()
self.assertEquals(self.fakesrc.__gstrefcount__, 1) # parent gone
self.assertEquals(self.fakesink.__gstrefcount__, 1) # parent gone
self.assertEquals(sys.getrefcount(self.fakesrc), pygobject_2_13 and 2 or 3)
self.assertEquals(sys.getrefcount(self.fakesink), pygobject_2_13 and 2 or 3)
gst.debug('deleting fakesrc')
del self.fakesrc
self.gccollect()
gst.debug('deleting fakesink')
del self.fakesink
self.gccollect()
TestCase.tearDown(self)
def testFakeSrcProbeOnceKeep(self):
self.fakesrc.set_property('num-buffers', 1)
self.fakesink.set_property('signal-handoffs', True)
self.fakesink.connect('handoff', self._handoff_callback_fakesink)
pad = self.fakesrc.get_pad('src')
id = pad.add_buffer_probe(self._probe_callback_fakesrc)
self._got_fakesrc_buffer = 0
self._got_fakesink_buffer = 0
self.pipeline.set_state(gst.STATE_PLAYING)
while not self._got_fakesrc_buffer:
gst.debug('waiting for fakesrc buffer')
pass
while not self._got_fakesink_buffer:
gst.debug('waiting for fakesink buffer')
pass
gst.debug('got buffers from fakesrc and fakesink')
self.assertEquals(self._got_fakesink_buffer, 1)
pad.remove_buffer_probe(id)
self.pipeline.set_state(gst.STATE_NULL)
def testFakeSrcProbeMany(self):
self.fakesrc.set_property('num-buffers', 1000)
pad = self.fakesrc.get_pad('src')
id = pad.add_buffer_probe(self._probe_callback_fakesrc)
self._got_fakesrc_buffer = 0
self.pipeline.set_state(gst.STATE_PLAYING)
while not self._got_fakesrc_buffer == 1000:
import time
# allow for context switching; a busy loop here locks up the
# streaming thread too much
time.sleep(.0001)
pad.remove_buffer_probe(id)
self.pipeline.set_state(gst.STATE_NULL)
def _probe_callback_fakesrc(self, pad, buffer):
self.failUnless(isinstance(pad, gst.Pad))
self.failUnless(isinstance(buffer, gst.Buffer))
self._got_fakesrc_buffer += 1
gst.debug('fakesrc sent buffer %r, %d total sent' % (
buffer, self._got_fakesrc_buffer))
return True
def _handoff_callback_fakesink(self, sink, buffer, pad):
self.failUnless(isinstance(buffer, gst.Buffer))
self.failUnless(isinstance(pad, gst.Pad))
self._got_fakesink_buffer += 1
gst.debug('fakesink got buffer %r, %d total received' % (
buffer, self._got_fakesrc_buffer))
gst.debug('pad %r, py refcount %d, go rc %d, gst rc %d' % (
pad, sys.getrefcount(pad), pad.__grefcount__, pad.__gstrefcount__))
return True
def testRemovingProbe(self):
self.fakesrc.set_property('num-buffers', 10)
handle = None
self._num_times_called = 0
def buffer_probe(pad, buffer, data):
self._num_times_called += 1
pad.remove_buffer_probe(handle)
return True
pad = self.fakesrc.get_pad('src')
data = []
handle = pad.add_buffer_probe(buffer_probe, data)
self.pipeline.set_state(gst.STATE_PLAYING)
m = self.pipeline.get_bus().poll(gst.MESSAGE_EOS, -1)
assert m
assert self._num_times_called == 1
self.pipeline.set_state(gst.STATE_NULL)
assert sys.getrefcount(buffer_probe) == 2
assert sys.getrefcount(data) == 2
# FIXME: having m going out of scope doesn't seem to be enough
# to get it gc collected, and it keeps a ref to the pipeline.
# Look for a way to not have to do this explicitly
del m
self.gccollect()
class PadRefCountTest(TestCase):
def testAddPad(self):
# add a pad to an element
e = gst.element_factory_make('fakesrc')
self.assertEquals(sys.getrefcount(e), pygobject_2_13 and 2 or 3)
self.assertEquals(e.__gstrefcount__, 1)
gst.debug('creating pad with name mypad')
pad = gst.Pad("mypad", gst.PAD_SRC)
self.failUnless(pad)
self.assertEquals(sys.getrefcount(pad), pygobject_2_13 and 2 or 3)
self.assertEquals(pad.__gstrefcount__, 1)
gst.debug('adding pad to element')
e.add_pad(pad)
self.assertEquals(sys.getrefcount(e), pygobject_2_13 and 2 or 3)
self.assertEquals(e.__gstrefcount__, 1)
self.assertEquals(sys.getrefcount(pad), pygobject_2_13 and 2 or 3)
self.assertEquals(pad.__gstrefcount__, 2) # added to element
gst.debug('deleting element and collecting')
self.gccollect()
del e
if not pygobject_2_13:
# the element will be collected at 'del e' if we're using
# pygobject >= 2.13.0
self.assertEquals(self.gccollect(), 1) # collected the element
self.assertEquals(sys.getrefcount(pad), pygobject_2_13 and 2 or 3)
self.assertEquals(pad.__gstrefcount__, 1) # removed from element
gst.debug('deleting pad and collecting')
del pad
if not pygobject_2_13:
# the pad will be collected at 'del pad' if we're using
# pygobject >= 2.13.0
self.assertEquals(self.gccollect(), 1) # collected the pad
gst.debug('going into teardown')
class PadBlockTest(TestCase):
def testCallbackFlush(self):
# check that the same block callback can be called more than once (weird
# test but it was broken)
def blocked_cb(pad, blocked):
pad.push_event(gst.event_new_flush_start())
pad = gst.Pad('src', gst.PAD_SRC)
pad.set_active(True)
pad.set_blocked_async(True, blocked_cb)
for i in xrange(10):
buf = gst.Buffer('ciao')
pad.push(buf)
pad.push_event(gst.event_new_flush_stop())
def testCallbackRefcount(self):
def blocked_cb(pad, blocked):
pad.set_blocked_async(False, unblocked_cb)
def unblocked_cb(pad, blocked):
pass
cb_refcount = sys.getrefcount(blocked_cb)
# sys.getrefcount() returns refcount + 1
self.assertEquals(cb_refcount, 2)
pad = gst.Pad('src', gst.PAD_SRC)
pad.set_active(True)
pad.set_blocked_async(True, blocked_cb)
# set_blocked_async refs the callback
self.assertEquals(sys.getrefcount(blocked_cb), 3)
buf = gst.Buffer('ciao')
pad.push(buf)
# in blocked_cb() we called set_blocked_async() with a different
# callback, so blocked_cb() should have been unreffed
cb_refcount_after = sys.getrefcount(blocked_cb)
self.assertEquals(sys.getrefcount(blocked_cb), cb_refcount)
if __name__ == "__main__":
unittest.main()
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