gstreamer/testsuite/test_event.py

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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import os
import sys
from common import gst, unittest, testhelper, TestCase
class EventTest(TestCase):
def setUp(self):
TestCase.setUp(self)
self.pipeline = gst.parse_launch('fakesrc ! fakesink name=sink')
self.sink = self.pipeline.get_by_name('sink')
self.pipeline.set_state(gst.STATE_PLAYING)
def tearDown(self):
gst.debug('setting pipeline to NULL')
self.pipeline.set_state(gst.STATE_NULL)
gst.debug('set pipeline to NULL')
del self.sink
del self.pipeline
TestCase.tearDown(self)
def testEventSeek(self):
# this event only serves to change the rate of data transfer
event = gst.event_new_seek(1.0, gst.FORMAT_BYTES, gst.SEEK_FLAG_FLUSH,
gst.SEEK_TYPE_NONE, 0, gst.SEEK_TYPE_NONE, 0)
# FIXME: but basesrc goes into an mmap/munmap spree, needs to be fixed
event = gst.event_new_seek(1.0, gst.FORMAT_BYTES, gst.SEEK_FLAG_FLUSH,
gst.SEEK_TYPE_SET, 0, gst.SEEK_TYPE_NONE, 0)
assert event
gst.debug('sending event')
self.sink.send_event(event)
gst.debug('sent event')
self.assertEqual(event.parse_seek(), [1.0, gst.FORMAT_BYTES, gst.SEEK_FLAG_FLUSH,
gst.SEEK_TYPE_SET, 0, gst.SEEK_TYPE_NONE, 0])
def testWrongEvent(self):
buffer = gst.Buffer()
self.assertRaises(TypeError, self.sink.send_event, buffer)
number = 1
self.assertRaises(TypeError, self.sink.send_event, number)
class EventFileSrcTest(TestCase):
# FIXME: properly create temp files
filename = '/tmp/gst-python-test-file'
def setUp(self):
TestCase.setUp(self)
gst.info("start")
if os.path.exists(self.filename):
os.remove(self.filename)
open(self.filename, 'w').write(''.join(map(str, range(10))))
self.pipeline = gst.parse_launch('filesrc name=source location=%s blocksize=1 ! fakesink signal-handoffs=1 name=sink' % self.filename)
self.source = self.pipeline.get_by_name('source')
self.sink = self.pipeline.get_by_name('sink')
self.sigid = self.sink.connect('handoff', self.handoff_cb)
self.bus = self.pipeline.get_bus()
def tearDown(self):
self.pipeline.set_state(gst.STATE_NULL)
self.sink.disconnect(self.sigid)
if os.path.exists(self.filename):
os.remove(self.filename)
del self.bus
del self.pipeline
del self.source
del self.sink
del self.handoffs
TestCase.tearDown(self)
def handoff_cb(self, element, buffer, pad):
self.handoffs.append(str(buffer))
def playAndIter(self):
self.handoffs = []
self.pipeline.set_state(gst.STATE_PLAYING)
assert self.pipeline.set_state(gst.STATE_PLAYING)
while 42:
msg = self.bus.pop()
if msg and msg.type == gst.MESSAGE_EOS:
break
assert self.pipeline.set_state(gst.STATE_PAUSED)
handoffs = self.handoffs
self.handoffs = []
return handoffs
def sink_seek(self, offset, method=gst.SEEK_TYPE_SET):
self.sink.seek(1.0, gst.FORMAT_BYTES, gst.SEEK_FLAG_FLUSH,
method, offset,
gst.SEEK_TYPE_NONE, 0)
def testSimple(self):
handoffs = self.playAndIter()
assert handoffs == map(str, range(10))
def testSeekCur(self):
self.sink_seek(8)
self.playAndIter()
class TestEmit(TestCase):
def testEmit(self):
object = testhelper.get_object()
object.connect('event', self._event_cb)
# First emit from C
testhelper.emit_event(object)
# Then emit from Python
object.emit('event', gst.event_new_eos())
def _event_cb(self, obj, event):
assert isinstance(event, gst.Event)
if __name__ == "__main__":
unittest.main()