# -*- 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
import os
import sys
import time
import tempfile
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')
# FIXME: wait for state change thread to die
while self.pipeline.__gstrefcount__ > 1:
gst.debug('waiting for self.pipeline G rc to drop to 1')
time.sleep(0.1)
self.assertEquals(self.pipeline.__gstrefcount__, 1)
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):
def setUp(self):
TestCase.setUp(self)
gst.info("start")
self.filename = tempfile.mktemp()
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)
class TestDelayedEventProbe(TestCase):
# this test:
# starts a pipeline with only a source
# adds an event probe to catch the (first) new-segment
# adds a buffer probe to "autoplug" and send out this event
def setUp(self):
TestCase.setUp(self)
self.pipeline = gst.Pipeline()
self.src = gst.element_factory_make('fakesrc')
self.src.set_property('num-buffers', 10)
self.pipeline.add(self.src)
self.srcpad = self.src.get_pad('src')
def tearDown(self):
gst.debug('setting pipeline to NULL')
self.pipeline.set_state(gst.STATE_NULL)
gst.debug('set pipeline to NULL')
# FIXME: wait for state change thread to die
while self.pipeline.__gstrefcount__ > 1:
gst.debug('waiting for self.pipeline G rc to drop to 1')
time.sleep(0.1)
self.assertEquals(self.pipeline.__gstrefcount__, 1)
def testProbe(self):
self.srcpad.add_event_probe(self._event_probe_cb)
self._buffer_probe_id = self.srcpad.add_buffer_probe(
self._buffer_probe_cb)
self._newsegment = None
self._eos = None
self._had_buffer = False
self.pipeline.set_state(gst.STATE_PLAYING)
while not self._eos:
time.sleep(0.1)
# verify if our newsegment event is still around and valid
self.failUnless(self._newsegment)
self.assertEquals(self._newsegment.type, gst.EVENT_NEWSEGMENT)
self.assertEquals(self._newsegment.__grefcount__, 1)
# verify if our eos event is still around and valid
self.failUnless(self._eos)
self.assertEquals(self._eos.type, gst.EVENT_EOS)
self.assertEquals(self._eos.__grefcount__, 1)
def _event_probe_cb(self, pad, event):
if event.type == gst.EVENT_NEWSEGMENT:
self._newsegment = event
self.assertEquals(event.__grefcount__, 3)
# drop the event, we're storing it for later sending
return False
if event.type == gst.EVENT_EOS:
self._eos = event
# we also want fakesink to get it
return True
# sinks now send Latency events upstream
if event.type == gst.EVENT_LATENCY:
return True
self.fail("Got an unknown event %r" % event)
def _buffer_probe_cb(self, pad, buffer):
self.failUnless(self._newsegment)
# fake autoplugging by now putting in a fakesink
sink = gst.element_factory_make('fakesink')
self.pipeline.add(sink)
self.src.link(sink)
sink.set_state(gst.STATE_PLAYING)
pad = sink.get_pad('sink')
pad.send_event(self._newsegment)
# we don't want to be called again
self.srcpad.remove_buffer_probe(self._buffer_probe_id)
self._had_buffer = True
# now let the buffer through
return True
class TestEventCreationParsing(TestCase):
def testEventStep(self):
if hasattr(gst.Event, "parse_step"):
e = gst.event_new_step(gst.FORMAT_TIME, 42, 1.0, True, True)
self.assertEquals(e.type, gst.EVENT_STEP)
fmt, amount, rate, flush, intermediate = e.parse_step()
self.assertEquals(fmt, gst.FORMAT_TIME)
self.assertEquals(amount, 42)
self.assertEquals(rate, 1.0)
self.assertEquals(flush, True)
self.assertEquals(intermediate, True)
if __name__ == "__main__":
unittest.main()