tests/check/elements/funnel.c - mtk-gstreamer-debian - Git at Google

 /* GStreamer unit tests for the funnel
  *
  * Copyright (C) 2008 Collabora, Nokia
  * @author: Olivier Crete <olivier.crete@collabora.co.uk>
  *
  * 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
 */


 #ifdef HAVE_CONFIG_H
 # include <config.h>
 #endif

 #include <gst/check/gstharness.h>
 #include <gst/check/gstcheck.h>

 struct TestData
 {
   GstElement *funnel;
   GstPad *funnelsrc, *funnelsink11, *funnelsink22;
   GstPad *mysink, *mysrc1, *mysrc2;
   GstCaps *mycaps;
 };

 static void
 setup_test_objects (struct TestData *td, GstPadChainFunction chain_func)
 {
   td->mycaps = gst_caps_new_empty_simple ("test/test");

   td->funnel = gst_element_factory_make ("funnel", NULL);

   td->funnelsrc = gst_element_get_static_pad (td->funnel, "src");
   fail_unless (td->funnelsrc != NULL);

   td->funnelsink11 = gst_element_get_request_pad (td->funnel, "sink_11");
   fail_unless (td->funnelsink11 != NULL);
   fail_unless (!strcmp (GST_OBJECT_NAME (td->funnelsink11), "sink_11"));

   td->funnelsink22 = gst_element_get_request_pad (td->funnel, "sink_22");
   fail_unless (td->funnelsink22 != NULL);
   fail_unless (!strcmp (GST_OBJECT_NAME (td->funnelsink22), "sink_22"));

   fail_unless (gst_element_set_state (td->funnel, GST_STATE_PLAYING) ==
       GST_STATE_CHANGE_SUCCESS);

   td->mysink = gst_pad_new ("sink", GST_PAD_SINK);
   gst_pad_set_chain_function (td->mysink, chain_func);
   gst_pad_set_active (td->mysink, TRUE);

   td->mysrc1 = gst_pad_new ("src1", GST_PAD_SRC);
   gst_pad_set_active (td->mysrc1, TRUE);
   gst_check_setup_events_with_stream_id (td->mysrc1, td->funnel, td->mycaps,
       GST_FORMAT_BYTES, "test1");

   td->mysrc2 = gst_pad_new ("src2", GST_PAD_SRC);
   gst_pad_set_active (td->mysrc2, TRUE);
   gst_check_setup_events_with_stream_id (td->mysrc2, td->funnel, td->mycaps,
       GST_FORMAT_BYTES, "test2");

   fail_unless (GST_PAD_LINK_SUCCESSFUL (gst_pad_link (td->funnelsrc,
               td->mysink)));

   fail_unless (GST_PAD_LINK_SUCCESSFUL (gst_pad_link (td->mysrc1,
               td->funnelsink11)));

   fail_unless (GST_PAD_LINK_SUCCESSFUL (gst_pad_link (td->mysrc2,
               td->funnelsink22)));

 }

 static void
 release_test_objects (struct TestData *td)
 {
   gst_pad_set_active (td->mysink, FALSE);
   gst_pad_set_active (td->mysrc1, FALSE);
   gst_pad_set_active (td->mysrc1, FALSE);

   gst_object_unref (td->mysink);
   gst_object_unref (td->mysrc1);
   gst_object_unref (td->mysrc2);

   fail_unless (gst_element_set_state (td->funnel, GST_STATE_NULL) ==
       GST_STATE_CHANGE_SUCCESS);

   gst_object_unref (td->funnelsrc);
   gst_element_release_request_pad (td->funnel, td->funnelsink11);
   gst_object_unref (td->funnelsink11);
   gst_element_release_request_pad (td->funnel, td->funnelsink22);
   gst_object_unref (td->funnelsink22);

   gst_caps_unref (td->mycaps);
   gst_object_unref (td->funnel);
 }

 static gint bufcount = 0;
 static gint alloccount = 0;

 static GstFlowReturn
 chain_ok (GstPad * pad, GstObject * parent, GstBuffer * buffer)
 {
   bufcount++;

   gst_buffer_unref (buffer);

   return GST_FLOW_OK;
 }

 GST_START_TEST (test_funnel_simple)
 {
   struct TestData td;

   setup_test_objects (&td, chain_ok);

   bufcount = 0;
   alloccount = 0;

   fail_unless (gst_pad_push (td.mysrc1, gst_buffer_new ()) == GST_FLOW_OK);
   fail_unless (gst_pad_push (td.mysrc2, gst_buffer_new ()) == GST_FLOW_OK);

   fail_unless (bufcount == 2);

   release_test_objects (&td);
 }

 GST_END_TEST;

 guint num_eos = 0;

 static gboolean
 eos_event_func (GstPad * pad, GstObject * parent, GstEvent * event)
 {
   if (GST_EVENT_TYPE (event) == GST_EVENT_EOS)
     ++num_eos;

   return gst_pad_event_default (pad, parent, event);
 }

 GST_START_TEST (test_funnel_eos)
 {
   struct TestData td;
   GstSegment segment;

   setup_test_objects (&td, chain_ok);

   num_eos = 0;
   bufcount = 0;

   gst_pad_set_event_function (td.mysink, eos_event_func);

   fail_unless (gst_pad_push (td.mysrc1, gst_buffer_new ()) == GST_FLOW_OK);
   fail_unless (gst_pad_push (td.mysrc2, gst_buffer_new ()) == GST_FLOW_OK);

   fail_unless (bufcount == 2);

   fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_eos ()));
   fail_unless (num_eos == 0);

   fail_unless (gst_pad_push (td.mysrc1, gst_buffer_new ()) == GST_FLOW_EOS);
   fail_unless (gst_pad_push (td.mysrc2, gst_buffer_new ()) == GST_FLOW_OK);

   fail_unless (bufcount == 3);

   fail_unless (gst_pad_push_event (td.mysrc2, gst_event_new_eos ()));
   fail_unless (num_eos == 1);

   fail_unless (gst_pad_push (td.mysrc1, gst_buffer_new ()) == GST_FLOW_EOS);
   fail_unless (gst_pad_push (td.mysrc2, gst_buffer_new ()) == GST_FLOW_EOS);

   fail_unless (bufcount == 3);

   fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_flush_start ()));
   fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_flush_stop (TRUE)));

   gst_segment_init (&segment, GST_FORMAT_BYTES);
   gst_pad_push_event (td.mysrc1, gst_event_new_segment (&segment));
   gst_pad_push_event (td.mysrc2, gst_event_new_segment (&segment));

   fail_unless (gst_pad_push (td.mysrc1, gst_buffer_new ()) == GST_FLOW_OK);
   fail_unless (gst_pad_push (td.mysrc2, gst_buffer_new ()) == GST_FLOW_EOS);

   fail_unless (bufcount == 4);

   fail_unless (gst_pad_unlink (td.mysrc1, td.funnelsink11));
   gst_element_release_request_pad (td.funnel, td.funnelsink11);
   gst_object_unref (td.funnelsink11);
   fail_unless (num_eos == 2);

   td.funnelsink11 = gst_element_get_request_pad (td.funnel, "sink_11");
   fail_unless (td.funnelsink11 != NULL);
   fail_unless (!strcmp (GST_OBJECT_NAME (td.funnelsink11), "sink_11"));

   fail_unless (GST_PAD_LINK_SUCCESSFUL (gst_pad_link (td.mysrc1,
               td.funnelsink11)));

   /* This will fail because everything is EOS already */
   fail_if (gst_pad_push_event (td.mysrc1, gst_event_new_eos ()));
   fail_unless (num_eos == 2);

   fail_unless (gst_pad_unlink (td.mysrc1, td.funnelsink11));
   gst_element_release_request_pad (td.funnel, td.funnelsink11);
   gst_object_unref (td.funnelsink11);
   fail_unless (num_eos == 2);

   /* send only eos to check, it handles empty streams */
   td.funnelsink11 = gst_element_get_request_pad (td.funnel, "sink_11");
   fail_unless (td.funnelsink11 != NULL);
   fail_unless (!strcmp (GST_OBJECT_NAME (td.funnelsink11), "sink_11"));

   fail_unless (GST_PAD_LINK_SUCCESSFUL (gst_pad_link (td.mysrc1,
               td.funnelsink11)));

   fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_flush_start ()));
   fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_flush_stop (TRUE)));
   fail_unless (gst_pad_push_event (td.mysrc2, gst_event_new_flush_start ()));
   fail_unless (gst_pad_push_event (td.mysrc2, gst_event_new_flush_stop (TRUE)));

   fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_eos ()));
   fail_unless (gst_pad_push_event (td.mysrc2, gst_event_new_eos ()));
   fail_unless (num_eos == 3);

   fail_unless (gst_pad_unlink (td.mysrc1, td.funnelsink11));
   gst_element_release_request_pad (td.funnel, td.funnelsink11);
   gst_object_unref (td.funnelsink11);
   fail_unless (num_eos == 3);

   td.funnelsink11 = gst_element_get_request_pad (td.funnel, "sink_11");
   fail_unless (td.funnelsink11 != NULL);
   fail_unless (!strcmp (GST_OBJECT_NAME (td.funnelsink11), "sink_11"));

   release_test_objects (&td);
 }

 GST_END_TEST;

 guint nb_stream_start_event = 0;
 guint nb_caps_event = 0;
 guint nb_segment_event = 0;
 guint nb_gap_event = 0;

 static GstPadProbeReturn
 event_counter (GstObject * pad, GstPadProbeInfo * info, gpointer user_data)
 {
   GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info);

   fail_unless (event != NULL);
   fail_unless (GST_IS_EVENT (event));

   switch (GST_EVENT_TYPE (event)) {
     case GST_EVENT_STREAM_START:
       ++nb_stream_start_event;
       break;
     case GST_EVENT_CAPS:
       ++nb_caps_event;
       break;
     case GST_EVENT_SEGMENT:
       ++nb_segment_event;
       break;
     case GST_EVENT_GAP:
       ++nb_gap_event;
       break;
     default:
       break;
   }

   return GST_PAD_PROBE_OK;
 }

 /*
  * Push GAP events into funnel to forward sticky events.
  * Funnel element shoud also treat GAP events likes buffers.
  * For example, funnel can be used for internal subtitle with streamiddemux.
  *  +--------------------------------------------------------------------------+
  *  | playbin                               +--------------------------------+ |
  *  | +--------------+  +----------------+  | +------------+     playsink    | |
  *  | | uridecodebin |  | input-selector |  | | video-sink |                 | |
  *  | |              |  +----------------+  | +------------+                 | |
  *  | |              |                      |                                | |
  *  | |              |  +----------------+  | +------------+                 | |
  *  | |              |  | input-selector |  | | audio-sink |                 | |
  *  | |              |  +----------------+  | +------------+                 | |
  *  | |              |                      |                                | |
  *  | |              |  +----------------+  | +---------------+ +----------+ | |
  *  | |              |  | funnel         |  | | streamiddemux | | appsink0 | | |
  *  | +--------------+  +----------------+  | +---------------+ +----------+ | |
  *  |                                       |                   +----------+ | |
  *  |                                       |                   | appsinkn | | |
  *  |                                       |                   +----------+ | |
  *  |                                       +--------------------------------+ |
  *  +--------------------------------------------------------------------------+
  * If no data was received in funnel and then sticky events can be pending continuously.
  * And streamiddemux only receive gap events continuously.
  * Thus, pipeline can not be constructed completely.
  * For support it, need to handle GAP events likes buffers.
  */
 GST_START_TEST (test_funnel_gap_event)
 {
   struct TestData td;
   guint probe = 0;

   setup_test_objects (&td, chain_ok);

   nb_stream_start_event = 0;
   nb_caps_event = 0;
   nb_segment_event = 0;
   nb_gap_event = 0;
   bufcount = 0;

   probe = gst_pad_add_probe (td.mysink, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
       (GstPadProbeCallback) event_counter, NULL, NULL);

   /* push a gap event to srcpad1 to push sticky events */
   fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_gap (0,
               GST_SECOND)));

   fail_unless (nb_stream_start_event == 1);
   fail_unless (nb_caps_event == 1);
   fail_unless (nb_segment_event == 1);
   fail_unless (nb_gap_event == 1);

   /* push a gap event to srcpad2 to push sticky events */
   fail_unless (gst_pad_push_event (td.mysrc2, gst_event_new_gap (0,
               GST_SECOND)));

   fail_unless (nb_stream_start_event == 2);
   fail_unless (nb_caps_event == 2);
   fail_unless (nb_segment_event == 2);
   fail_unless (nb_gap_event == 2);

   /* push a gap event to srcpad2 */
   fail_unless (gst_pad_push_event (td.mysrc2, gst_event_new_gap (0,
               GST_SECOND)));

   fail_unless (nb_stream_start_event == 2);
   fail_unless (nb_caps_event == 2);
   fail_unless (nb_segment_event == 2);
   fail_unless (nb_gap_event == 3);

   /* push a gap event to srcpad1 */
   fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_gap (0,
               GST_SECOND)));

   fail_unless (nb_stream_start_event == 3);
   fail_unless (nb_caps_event == 3);
   fail_unless (nb_segment_event == 3);
   fail_unless (nb_gap_event == 4);

   /* push buffer */
   fail_unless (gst_pad_push (td.mysrc1, gst_buffer_new ()) == GST_FLOW_OK);
   fail_unless (gst_pad_push (td.mysrc2, gst_buffer_new ()) == GST_FLOW_OK);

   fail_unless (nb_stream_start_event == 4);
   fail_unless (nb_caps_event == 4);
   fail_unless (nb_segment_event == 4);
   fail_unless (nb_gap_event == 4);
   fail_unless (bufcount == 2);

   gst_pad_remove_probe (td.mysink, probe);

   release_test_objects (&td);
 }

 GST_END_TEST;

 GST_START_TEST (test_funnel_stress)
 {
   GstHarness *h0 = gst_harness_new_with_padnames ("funnel", "sink_0", "src");
   GstHarness *h1 = gst_harness_new_with_element (h0->element, "sink_1", NULL);
   GstHarnessThread *req, *push0, *push1;
   GstPadTemplate *templ =
       gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (h0->element),
       "sink_%u");
   GstCaps *caps = gst_caps_from_string ("testcaps");
   GstBuffer *buf = gst_buffer_new ();
   GstSegment segment;

   gst_segment_init (&segment, GST_FORMAT_TIME);

   req = gst_harness_stress_requestpad_start (h0, templ, NULL, NULL, TRUE);
   push0 = gst_harness_stress_push_buffer_start (h0, caps, &segment, buf);
   push1 = gst_harness_stress_push_buffer_start (h1, caps, &segment, buf);

   gst_caps_unref (caps);
   gst_buffer_unref (buf);

   /* test-length */
   g_usleep (G_USEC_PER_SEC * 1);

   gst_harness_stress_thread_stop (push1);
   gst_harness_stress_thread_stop (push0);
   gst_harness_stress_thread_stop (req);

   gst_harness_teardown (h1);
   gst_harness_teardown (h0);
 }

 GST_END_TEST;


 static Suite *
 funnel_suite (void)
 {
   Suite *s = suite_create ("funnel");
   TCase *tc_chain;

   tc_chain = tcase_create ("funnel simple");
   tcase_add_test (tc_chain, test_funnel_simple);
   tcase_add_test (tc_chain, test_funnel_eos);
   tcase_add_test (tc_chain, test_funnel_gap_event);
   tcase_add_test (tc_chain, test_funnel_stress);
   suite_add_tcase (s, tc_chain);

   return s;
 }

 GST_CHECK_MAIN (funnel);
	/* GStreamer unit tests for the funnel
	*
	* Copyright (C) 2008 Collabora, Nokia
	* @author: Olivier Crete <olivier.crete@collabora.co.uk>
	*
	* 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
	*/


	#ifdef HAVE_CONFIG_H
	# include <config.h>
	#endif

	#include <gst/check/gstharness.h>
	#include <gst/check/gstcheck.h>

	struct TestData
	{
	GstElement *funnel;
	GstPad funnelsrc, funnelsink11, *funnelsink22;
	GstPad mysink, mysrc1, *mysrc2;
	GstCaps *mycaps;
	};

	static void
	setup_test_objects (struct TestData *td, GstPadChainFunction chain_func)
	{
	td->mycaps = gst_caps_new_empty_simple ("test/test");

	td->funnel = gst_element_factory_make ("funnel", NULL);

	td->funnelsrc = gst_element_get_static_pad (td->funnel, "src");
	fail_unless (td->funnelsrc != NULL);

	td->funnelsink11 = gst_element_get_request_pad (td->funnel, "sink_11");
	fail_unless (td->funnelsink11 != NULL);
	fail_unless (!strcmp (GST_OBJECT_NAME (td->funnelsink11), "sink_11"));

	td->funnelsink22 = gst_element_get_request_pad (td->funnel, "sink_22");
	fail_unless (td->funnelsink22 != NULL);
	fail_unless (!strcmp (GST_OBJECT_NAME (td->funnelsink22), "sink_22"));

	fail_unless (gst_element_set_state (td->funnel, GST_STATE_PLAYING) ==
	GST_STATE_CHANGE_SUCCESS);

	td->mysink = gst_pad_new ("sink", GST_PAD_SINK);
	gst_pad_set_chain_function (td->mysink, chain_func);
	gst_pad_set_active (td->mysink, TRUE);

	td->mysrc1 = gst_pad_new ("src1", GST_PAD_SRC);
	gst_pad_set_active (td->mysrc1, TRUE);
	gst_check_setup_events_with_stream_id (td->mysrc1, td->funnel, td->mycaps,
	GST_FORMAT_BYTES, "test1");

	td->mysrc2 = gst_pad_new ("src2", GST_PAD_SRC);
	gst_pad_set_active (td->mysrc2, TRUE);
	gst_check_setup_events_with_stream_id (td->mysrc2, td->funnel, td->mycaps,
	GST_FORMAT_BYTES, "test2");

	fail_unless (GST_PAD_LINK_SUCCESSFUL (gst_pad_link (td->funnelsrc,
	td->mysink)));

	fail_unless (GST_PAD_LINK_SUCCESSFUL (gst_pad_link (td->mysrc1,
	td->funnelsink11)));

	fail_unless (GST_PAD_LINK_SUCCESSFUL (gst_pad_link (td->mysrc2,
	td->funnelsink22)));

	}

	static void
	release_test_objects (struct TestData *td)
	{
	gst_pad_set_active (td->mysink, FALSE);
	gst_pad_set_active (td->mysrc1, FALSE);
	gst_pad_set_active (td->mysrc1, FALSE);

	gst_object_unref (td->mysink);
	gst_object_unref (td->mysrc1);
	gst_object_unref (td->mysrc2);

	fail_unless (gst_element_set_state (td->funnel, GST_STATE_NULL) ==
	GST_STATE_CHANGE_SUCCESS);

	gst_object_unref (td->funnelsrc);
	gst_element_release_request_pad (td->funnel, td->funnelsink11);
	gst_object_unref (td->funnelsink11);
	gst_element_release_request_pad (td->funnel, td->funnelsink22);
	gst_object_unref (td->funnelsink22);

	gst_caps_unref (td->mycaps);
	gst_object_unref (td->funnel);
	}

	static gint bufcount = 0;
	static gint alloccount = 0;

	static GstFlowReturn
	chain_ok (GstPad * pad, GstObject * parent, GstBuffer * buffer)
	{
	bufcount++;

	gst_buffer_unref (buffer);

	return GST_FLOW_OK;
	}

	GST_START_TEST (test_funnel_simple)
	{
	struct TestData td;

	setup_test_objects (&td, chain_ok);

	bufcount = 0;
	alloccount = 0;

	fail_unless (gst_pad_push (td.mysrc1, gst_buffer_new ()) == GST_FLOW_OK);
	fail_unless (gst_pad_push (td.mysrc2, gst_buffer_new ()) == GST_FLOW_OK);

	fail_unless (bufcount == 2);

	release_test_objects (&td);
	}

	GST_END_TEST;

	guint num_eos = 0;

	static gboolean
	eos_event_func (GstPad * pad, GstObject * parent, GstEvent * event)
	{
	if (GST_EVENT_TYPE (event) == GST_EVENT_EOS)
	++num_eos;

	return gst_pad_event_default (pad, parent, event);
	}

	GST_START_TEST (test_funnel_eos)
	{
	struct TestData td;
	GstSegment segment;

	setup_test_objects (&td, chain_ok);

	num_eos = 0;
	bufcount = 0;

	gst_pad_set_event_function (td.mysink, eos_event_func);

	fail_unless (gst_pad_push (td.mysrc1, gst_buffer_new ()) == GST_FLOW_OK);
	fail_unless (gst_pad_push (td.mysrc2, gst_buffer_new ()) == GST_FLOW_OK);

	fail_unless (bufcount == 2);

	fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_eos ()));
	fail_unless (num_eos == 0);

	fail_unless (gst_pad_push (td.mysrc1, gst_buffer_new ()) == GST_FLOW_EOS);
	fail_unless (gst_pad_push (td.mysrc2, gst_buffer_new ()) == GST_FLOW_OK);

	fail_unless (bufcount == 3);

	fail_unless (gst_pad_push_event (td.mysrc2, gst_event_new_eos ()));
	fail_unless (num_eos == 1);

	fail_unless (gst_pad_push (td.mysrc1, gst_buffer_new ()) == GST_FLOW_EOS);
	fail_unless (gst_pad_push (td.mysrc2, gst_buffer_new ()) == GST_FLOW_EOS);

	fail_unless (bufcount == 3);

	fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_flush_start ()));
	fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_flush_stop (TRUE)));

	gst_segment_init (&segment, GST_FORMAT_BYTES);
	gst_pad_push_event (td.mysrc1, gst_event_new_segment (&segment));
	gst_pad_push_event (td.mysrc2, gst_event_new_segment (&segment));

	fail_unless (gst_pad_push (td.mysrc1, gst_buffer_new ()) == GST_FLOW_OK);
	fail_unless (gst_pad_push (td.mysrc2, gst_buffer_new ()) == GST_FLOW_EOS);

	fail_unless (bufcount == 4);

	fail_unless (gst_pad_unlink (td.mysrc1, td.funnelsink11));
	gst_element_release_request_pad (td.funnel, td.funnelsink11);
	gst_object_unref (td.funnelsink11);
	fail_unless (num_eos == 2);

	td.funnelsink11 = gst_element_get_request_pad (td.funnel, "sink_11");
	fail_unless (td.funnelsink11 != NULL);
	fail_unless (!strcmp (GST_OBJECT_NAME (td.funnelsink11), "sink_11"));

	fail_unless (GST_PAD_LINK_SUCCESSFUL (gst_pad_link (td.mysrc1,
	td.funnelsink11)));

	/* This will fail because everything is EOS already */
	fail_if (gst_pad_push_event (td.mysrc1, gst_event_new_eos ()));
	fail_unless (num_eos == 2);

	fail_unless (gst_pad_unlink (td.mysrc1, td.funnelsink11));
	gst_element_release_request_pad (td.funnel, td.funnelsink11);
	gst_object_unref (td.funnelsink11);
	fail_unless (num_eos == 2);

	/* send only eos to check, it handles empty streams */
	td.funnelsink11 = gst_element_get_request_pad (td.funnel, "sink_11");
	fail_unless (td.funnelsink11 != NULL);
	fail_unless (!strcmp (GST_OBJECT_NAME (td.funnelsink11), "sink_11"));

	fail_unless (GST_PAD_LINK_SUCCESSFUL (gst_pad_link (td.mysrc1,
	td.funnelsink11)));

	fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_flush_start ()));
	fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_flush_stop (TRUE)));
	fail_unless (gst_pad_push_event (td.mysrc2, gst_event_new_flush_start ()));
	fail_unless (gst_pad_push_event (td.mysrc2, gst_event_new_flush_stop (TRUE)));

	fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_eos ()));
	fail_unless (gst_pad_push_event (td.mysrc2, gst_event_new_eos ()));
	fail_unless (num_eos == 3);

	fail_unless (gst_pad_unlink (td.mysrc1, td.funnelsink11));
	gst_element_release_request_pad (td.funnel, td.funnelsink11);
	gst_object_unref (td.funnelsink11);
	fail_unless (num_eos == 3);

	td.funnelsink11 = gst_element_get_request_pad (td.funnel, "sink_11");
	fail_unless (td.funnelsink11 != NULL);
	fail_unless (!strcmp (GST_OBJECT_NAME (td.funnelsink11), "sink_11"));

	release_test_objects (&td);
	}

	GST_END_TEST;

	guint nb_stream_start_event = 0;
	guint nb_caps_event = 0;
	guint nb_segment_event = 0;
	guint nb_gap_event = 0;

	static GstPadProbeReturn
	event_counter (GstObject * pad, GstPadProbeInfo * info, gpointer user_data)
	{
	GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info);

	fail_unless (event != NULL);
	fail_unless (GST_IS_EVENT (event));

	switch (GST_EVENT_TYPE (event)) {
	case GST_EVENT_STREAM_START:
	++nb_stream_start_event;
	break;
	case GST_EVENT_CAPS:
	++nb_caps_event;
	break;
	case GST_EVENT_SEGMENT:
	++nb_segment_event;
	break;
	case GST_EVENT_GAP:
	++nb_gap_event;
	break;
	default:
	break;
	}

	return GST_PAD_PROBE_OK;
	}

	/*
	* Push GAP events into funnel to forward sticky events.
	* Funnel element shoud also treat GAP events likes buffers.
	* For example, funnel can be used for internal subtitle with streamiddemux.
	* +--------------------------------------------------------------------------+
	* \| playbin +--------------------------------+ \|
	* \| +--------------+ +----------------+ \| +------------+ playsink \| \|
	* \| \| uridecodebin \| \| input-selector \| \| \| video-sink \| \| \|
	* \| \| \| +----------------+ \| +------------+ \| \|
	* \| \| \| \| \| \|
	* \| \| \| +----------------+ \| +------------+ \| \|
	* \| \| \| \| input-selector \| \| \| audio-sink \| \| \|
	* \| \| \| +----------------+ \| +------------+ \| \|
	* \| \| \| \| \| \|
	* \| \| \| +----------------+ \| +---------------+ +----------+ \| \|
	* \| \| \| \| funnel \| \| \| streamiddemux \| \| appsink0 \| \| \|
	* \| +--------------+ +----------------+ \| +---------------+ +----------+ \| \|
	* \| \| +----------+ \| \|
	* \| \| \| appsinkn \| \| \|
	* \| \| +----------+ \| \|
	* \| +--------------------------------+ \|
	* +--------------------------------------------------------------------------+
	* If no data was received in funnel and then sticky events can be pending continuously.
	* And streamiddemux only receive gap events continuously.
	* Thus, pipeline can not be constructed completely.
	* For support it, need to handle GAP events likes buffers.
	*/
	GST_START_TEST (test_funnel_gap_event)
	{
	struct TestData td;
	guint probe = 0;

	setup_test_objects (&td, chain_ok);

	nb_stream_start_event = 0;
	nb_caps_event = 0;
	nb_segment_event = 0;
	nb_gap_event = 0;
	bufcount = 0;

	probe = gst_pad_add_probe (td.mysink, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
	(GstPadProbeCallback) event_counter, NULL, NULL);

	/* push a gap event to srcpad1 to push sticky events */
	fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_gap (0,
	GST_SECOND)));

	fail_unless (nb_stream_start_event == 1);
	fail_unless (nb_caps_event == 1);
	fail_unless (nb_segment_event == 1);
	fail_unless (nb_gap_event == 1);

	/* push a gap event to srcpad2 to push sticky events */
	fail_unless (gst_pad_push_event (td.mysrc2, gst_event_new_gap (0,
	GST_SECOND)));

	fail_unless (nb_stream_start_event == 2);
	fail_unless (nb_caps_event == 2);
	fail_unless (nb_segment_event == 2);
	fail_unless (nb_gap_event == 2);

	/* push a gap event to srcpad2 */
	fail_unless (gst_pad_push_event (td.mysrc2, gst_event_new_gap (0,
	GST_SECOND)));

	fail_unless (nb_stream_start_event == 2);
	fail_unless (nb_caps_event == 2);
	fail_unless (nb_segment_event == 2);
	fail_unless (nb_gap_event == 3);

	/* push a gap event to srcpad1 */
	fail_unless (gst_pad_push_event (td.mysrc1, gst_event_new_gap (0,
	GST_SECOND)));

	fail_unless (nb_stream_start_event == 3);
	fail_unless (nb_caps_event == 3);
	fail_unless (nb_segment_event == 3);
	fail_unless (nb_gap_event == 4);

	/* push buffer */
	fail_unless (gst_pad_push (td.mysrc1, gst_buffer_new ()) == GST_FLOW_OK);
	fail_unless (gst_pad_push (td.mysrc2, gst_buffer_new ()) == GST_FLOW_OK);

	fail_unless (nb_stream_start_event == 4);
	fail_unless (nb_caps_event == 4);
	fail_unless (nb_segment_event == 4);
	fail_unless (nb_gap_event == 4);
	fail_unless (bufcount == 2);

	gst_pad_remove_probe (td.mysink, probe);

	release_test_objects (&td);
	}

	GST_END_TEST;

	GST_START_TEST (test_funnel_stress)
	{
	GstHarness *h0 = gst_harness_new_with_padnames ("funnel", "sink_0", "src");
	GstHarness *h1 = gst_harness_new_with_element (h0->element, "sink_1", NULL);
	GstHarnessThread req, push0, *push1;
	GstPadTemplate *templ =
	gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (h0->element),
	"sink_%u");
	GstCaps *caps = gst_caps_from_string ("testcaps");
	GstBuffer *buf = gst_buffer_new ();
	GstSegment segment;

	gst_segment_init (&segment, GST_FORMAT_TIME);

	req = gst_harness_stress_requestpad_start (h0, templ, NULL, NULL, TRUE);
	push0 = gst_harness_stress_push_buffer_start (h0, caps, &segment, buf);
	push1 = gst_harness_stress_push_buffer_start (h1, caps, &segment, buf);

	gst_caps_unref (caps);
	gst_buffer_unref (buf);

	/* test-length */
	g_usleep (G_USEC_PER_SEC * 1);

	gst_harness_stress_thread_stop (push1);
	gst_harness_stress_thread_stop (push0);
	gst_harness_stress_thread_stop (req);

	gst_harness_teardown (h1);
	gst_harness_teardown (h0);
	}

	GST_END_TEST;


	static Suite *
	funnel_suite (void)
	{
	Suite *s = suite_create ("funnel");
	TCase *tc_chain;

	tc_chain = tcase_create ("funnel simple");
	tcase_add_test (tc_chain, test_funnel_simple);
	tcase_add_test (tc_chain, test_funnel_eos);
	tcase_add_test (tc_chain, test_funnel_gap_event);
	tcase_add_test (tc_chain, test_funnel_stress);
	suite_add_tcase (s, tc_chain);

	return s;
	}

	GST_CHECK_MAIN (funnel);