gstreamer/tests/check/elements/tee.c
2014-01-14 16:47:38 +01:00

649 lines
20 KiB
C

/* GStreamer
*
* unit test for tee
*
* Copyright (C) <2007> Wim Taymans <wim dot taymans at gmail dot com>
* Copyright (C) <2008> Ole André Vadla Ravnås <ole.andre.ravnas@tandberg.com>
* Copyright (C) <2008> Christian Berentsen <christian.berentsen@tandberg.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <gst/check/gstcheck.h>
static void
handoff (GstElement * fakesink, GstBuffer * buf, GstPad * pad, guint * count)
{
*count = *count + 1;
}
/* construct fakesrc num-buffers=3 ! tee name=t ! queue ! fakesink t. ! queue !
* fakesink. Each fakesink should exactly receive 3 buffers.
*/
GST_START_TEST (test_num_buffers)
{
#define NUM_SUBSTREAMS 15
#define NUM_BUFFERS 3
GstElement *pipeline, *src, *tee;
GstElement *queues[NUM_SUBSTREAMS];
GstElement *sinks[NUM_SUBSTREAMS];
GstPad *req_pads[NUM_SUBSTREAMS];
guint counts[NUM_SUBSTREAMS];
GstBus *bus;
GstMessage *msg;
gint i;
pipeline = gst_pipeline_new ("pipeline");
src = gst_check_setup_element ("fakesrc");
g_object_set (src, "num-buffers", NUM_BUFFERS, NULL);
tee = gst_check_setup_element ("tee");
fail_unless (gst_bin_add (GST_BIN (pipeline), src));
fail_unless (gst_bin_add (GST_BIN (pipeline), tee));
fail_unless (gst_element_link (src, tee));
for (i = 0; i < NUM_SUBSTREAMS; ++i) {
GstPad *qpad;
gchar name[32];
counts[i] = 0;
queues[i] = gst_check_setup_element ("queue");
g_snprintf (name, 32, "queue%d", i);
gst_object_set_name (GST_OBJECT (queues[i]), name);
fail_unless (gst_bin_add (GST_BIN (pipeline), queues[i]));
sinks[i] = gst_check_setup_element ("fakesink");
g_snprintf (name, 32, "sink%d", i);
gst_object_set_name (GST_OBJECT (sinks[i]), name);
fail_unless (gst_bin_add (GST_BIN (pipeline), sinks[i]));
fail_unless (gst_element_link (queues[i], sinks[i]));
g_object_set (sinks[i], "signal-handoffs", TRUE, NULL);
g_signal_connect (sinks[i], "handoff", (GCallback) handoff, &counts[i]);
req_pads[i] = gst_element_get_request_pad (tee, "src_%u");
fail_unless (req_pads[i] != NULL);
qpad = gst_element_get_static_pad (queues[i], "sink");
fail_unless_equals_int (gst_pad_link (req_pads[i], qpad), GST_PAD_LINK_OK);
gst_object_unref (qpad);
}
bus = gst_element_get_bus (pipeline);
fail_if (bus == NULL);
gst_element_set_state (pipeline, GST_STATE_PLAYING);
msg = gst_bus_poll (bus, GST_MESSAGE_EOS | GST_MESSAGE_ERROR, -1);
fail_if (GST_MESSAGE_TYPE (msg) != GST_MESSAGE_EOS);
gst_message_unref (msg);
for (i = 0; i < NUM_SUBSTREAMS; ++i) {
fail_unless_equals_int (counts[i], NUM_BUFFERS);
}
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (bus);
for (i = 0; i < NUM_SUBSTREAMS; ++i) {
gst_element_release_request_pad (tee, req_pads[i]);
gst_object_unref (req_pads[i]);
}
gst_object_unref (pipeline);
}
GST_END_TEST;
/* we use fakesrc ! tee ! fakesink and then randomly request/release and link
* some pads from tee. This should happily run without any errors. */
GST_START_TEST (test_stress)
{
GstElement *pipeline;
GstElement *tee;
const gchar *desc;
GstBus *bus;
GstMessage *msg;
gint i;
/* Pump 1000 buffers (10 bytes each) per second through tee for 5 secs */
desc = "fakesrc datarate=10000 sizemin=10 sizemax=10 num-buffers=5000 ! "
"video/x-raw,framerate=25/1 ! tee name=t ! "
"queue max-size-buffers=2 ! fakesink sync=true";
pipeline = gst_parse_launch (desc, NULL);
fail_if (pipeline == NULL);
tee = gst_bin_get_by_name (GST_BIN (pipeline), "t");
fail_if (tee == NULL);
/* bring the pipeline to PLAYING, then start switching */
bus = gst_element_get_bus (pipeline);
fail_if (bus == NULL);
gst_element_set_state (pipeline, GST_STATE_PLAYING);
/* Wait for the pipeline to hit playing so that parse_launch can do the
* initial link, otherwise we perform linking from multiple threads and cause
* trouble */
gst_element_get_state (pipeline, NULL, NULL, GST_CLOCK_TIME_NONE);
for (i = 0; i < 50000; i++) {
GstPad *pad;
pad = gst_element_get_request_pad (tee, "src_%u");
gst_element_release_request_pad (tee, pad);
gst_object_unref (pad);
if ((msg = gst_bus_poll (bus, GST_MESSAGE_EOS | GST_MESSAGE_ERROR, 0)))
break;
}
/* now wait for completion or error */
if (msg == NULL)
msg = gst_bus_poll (bus, GST_MESSAGE_EOS | GST_MESSAGE_ERROR, -1);
fail_if (GST_MESSAGE_TYPE (msg) != GST_MESSAGE_EOS);
gst_message_unref (msg);
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (tee);
gst_object_unref (bus);
gst_object_unref (pipeline);
}
GST_END_TEST;
typedef struct
{
GstElement *tee;
GstCaps *caps;
GstPad *start_srcpad;
GstPad *tee_sinkpad;
GstPad *tee_srcpad;
GstPad *final_sinkpad;
GThread *app_thread;
gint countdown;
gboolean app_thread_prepped;
gboolean bufferalloc_blocked;
} BufferAllocHarness;
static void
buffer_alloc_harness_setup (BufferAllocHarness * h, gint countdown)
{
h->app_thread = NULL;
h->tee = gst_check_setup_element ("tee");
fail_if (h->tee == NULL);
h->countdown = countdown;
fail_unless_equals_int (gst_element_set_state (h->tee, GST_STATE_PLAYING),
TRUE);
h->caps = gst_caps_new_empty_simple ("video/x-raw");
h->start_srcpad = gst_pad_new ("src", GST_PAD_SRC);
fail_if (h->start_srcpad == NULL);
fail_unless (gst_pad_set_active (h->start_srcpad, TRUE) == TRUE);
fail_unless (gst_pad_set_caps (h->start_srcpad, h->caps) == TRUE);
h->tee_sinkpad = gst_element_get_static_pad (h->tee, "sink");
fail_if (h->tee_sinkpad == NULL);
h->tee_srcpad = gst_element_get_request_pad (h->tee, "src_%u");
fail_if (h->tee_srcpad == NULL);
h->final_sinkpad = gst_pad_new ("sink", GST_PAD_SINK);
fail_if (h->final_sinkpad == NULL);
fail_unless (gst_pad_set_active (h->final_sinkpad, TRUE) == TRUE);
fail_unless (gst_pad_set_caps (h->final_sinkpad, h->caps) == TRUE);
g_object_set_qdata (G_OBJECT (h->final_sinkpad),
g_quark_from_static_string ("buffer-alloc-harness"), h);
fail_unless_equals_int (gst_pad_link (h->start_srcpad, h->tee_sinkpad),
GST_PAD_LINK_OK);
fail_unless_equals_int (gst_pad_link (h->tee_srcpad, h->final_sinkpad),
GST_PAD_LINK_OK);
}
static void
buffer_alloc_harness_teardown (BufferAllocHarness * h)
{
if (h->app_thread)
g_thread_join (h->app_thread);
gst_pad_set_active (h->final_sinkpad, FALSE);
gst_object_unref (h->final_sinkpad);
gst_object_unref (h->tee_srcpad);
gst_object_unref (h->tee_sinkpad);
gst_pad_set_active (h->start_srcpad, FALSE);
gst_object_unref (h->start_srcpad);
gst_caps_unref (h->caps);
gst_check_teardown_element (h->tee);
}
#if 0
static gpointer
app_thread_func (gpointer data)
{
BufferAllocHarness *h = data;
/* Signal that we are about to call release_request_pad(). */
g_mutex_lock (&check_mutex);
h->app_thread_prepped = TRUE;
g_cond_signal (&check_cond);
g_mutex_unlock (&check_mutex);
/* Simulate that the app releases the pad while the streaming thread is in
* buffer_alloc below. */
gst_element_release_request_pad (h->tee, h->tee_srcpad);
/* Signal the bufferalloc function below if it's still waiting. */
g_mutex_lock (&check_mutex);
h->bufferalloc_blocked = FALSE;
g_cond_signal (&check_cond);
g_mutex_unlock (&check_mutex);
return NULL;
}
#endif
#if 0
static GstFlowReturn
final_sinkpad_bufferalloc (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
BufferAllocHarness *h;
GTimeVal deadline;
h = g_object_get_qdata (G_OBJECT (pad),
g_quark_from_static_string ("buffer-alloc-harness"));
g_assert (h != NULL);
if (--(h->countdown) == 0) {
/* Time to make the app release the pad. */
h->app_thread_prepped = FALSE;
h->bufferalloc_blocked = TRUE;
h->app_thread = g_thread_try_new ("gst-check", app_thread_func, h, NULL);
fail_if (h->app_thread == NULL);
/* Wait for the app thread to get ready to call release_request_pad(). */
g_mutex_lock (&check_mutex);
while (!h->app_thread_prepped)
g_cond_wait (&check_cond, &check_mutex);
g_mutex_unlock (&check_mutex);
/* Now wait for it to do that within a second, to avoid deadlocking
* in the event of future changes to the locking semantics. */
g_mutex_lock (&check_mutex);
g_get_current_time (&deadline);
deadline.tv_sec += 1;
while (h->bufferalloc_blocked) {
if (!g_cond_timed_wait (&check_cond, &check_mutex, &deadline))
break;
}
g_mutex_unlock (&check_mutex);
}
*buf = gst_buffer_new_and_alloc (size);
gst_buffer_set_caps (*buf, caps);
return GST_FLOW_OK;
}
#endif
/* Simulate an app releasing the pad while the first alloc_buffer() is in
* progress. */
GST_START_TEST (test_release_while_buffer_alloc)
{
BufferAllocHarness h;
buffer_alloc_harness_setup (&h, 1);
buffer_alloc_harness_teardown (&h);
}
GST_END_TEST;
/* Simulate an app releasing the pad while the second alloc_buffer() is in
* progress. */
GST_START_TEST (test_release_while_second_buffer_alloc)
{
BufferAllocHarness h;
buffer_alloc_harness_setup (&h, 2);
buffer_alloc_harness_teardown (&h);
}
GST_END_TEST;
/* Check the internal pads of tee */
GST_START_TEST (test_internal_links)
{
GstElement *tee;
GstPad *sinkpad, *srcpad1, *srcpad2;
GstIterator *it;
GstIteratorResult res;
GValue val1 = { 0, }
, val2 = {
0,};
tee = gst_check_setup_element ("tee");
sinkpad = gst_element_get_static_pad (tee, "sink");
fail_unless (sinkpad != NULL);
it = gst_pad_iterate_internal_links (sinkpad);
fail_unless (it != NULL);
/* iterator should not return anything */
res = gst_iterator_next (it, &val1);
fail_unless (res == GST_ITERATOR_DONE);
fail_unless (g_value_get_object (&val1) == NULL);
srcpad1 = gst_element_get_request_pad (tee, "src_%u");
fail_unless (srcpad1 != NULL);
/* iterator should resync */
res = gst_iterator_next (it, &val1);
fail_unless (res == GST_ITERATOR_RESYNC);
fail_unless (g_value_get_object (&val1) == NULL);
gst_iterator_resync (it);
/* we should get something now */
res = gst_iterator_next (it, &val1);
fail_unless (res == GST_ITERATOR_OK);
fail_unless (GST_PAD_CAST (g_value_get_object (&val1)) == srcpad1);
g_value_reset (&val1);
res = gst_iterator_next (it, &val1);
fail_unless (res == GST_ITERATOR_DONE);
fail_unless (g_value_get_object (&val1) == NULL);
srcpad2 = gst_element_get_request_pad (tee, "src_%u");
fail_unless (srcpad2 != NULL);
/* iterator should resync */
res = gst_iterator_next (it, &val1);
fail_unless (res == GST_ITERATOR_RESYNC);
fail_unless (g_value_get_object (&val1) == NULL);
gst_iterator_resync (it);
/* we should get one of the 2 pads now */
res = gst_iterator_next (it, &val1);
fail_unless (res == GST_ITERATOR_OK);
fail_unless (GST_PAD_CAST (g_value_get_object (&val1)) == srcpad1
|| GST_PAD_CAST (g_value_get_object (&val1)) == srcpad2);
/* and the other */
res = gst_iterator_next (it, &val2);
fail_unless (res == GST_ITERATOR_OK);
fail_unless (GST_PAD_CAST (g_value_get_object (&val2)) == srcpad1
|| GST_PAD_CAST (g_value_get_object (&val2)) == srcpad2);
fail_unless (g_value_get_object (&val1) != g_value_get_object (&val2));
g_value_reset (&val1);
g_value_reset (&val2);
res = gst_iterator_next (it, &val1);
fail_unless (res == GST_ITERATOR_DONE);
fail_unless (g_value_get_object (&val1) == NULL);
gst_iterator_free (it);
/* get an iterator for the other direction */
it = gst_pad_iterate_internal_links (srcpad1);
fail_unless (it != NULL);
res = gst_iterator_next (it, &val1);
fail_unless (res == GST_ITERATOR_OK);
fail_unless (GST_PAD_CAST (g_value_get_object (&val1)) == sinkpad);
g_value_reset (&val1);
res = gst_iterator_next (it, &val1);
fail_unless (res == GST_ITERATOR_DONE);
gst_iterator_free (it);
it = gst_pad_iterate_internal_links (srcpad2);
fail_unless (it != NULL);
res = gst_iterator_next (it, &val1);
fail_unless (res == GST_ITERATOR_OK);
fail_unless (GST_PAD_CAST (g_value_get_object (&val1)) == sinkpad);
g_value_reset (&val1);
res = gst_iterator_next (it, &val1);
fail_unless (res == GST_ITERATOR_DONE);
g_value_unset (&val1);
g_value_unset (&val2);
gst_iterator_free (it);
gst_object_unref (srcpad1);
gst_object_unref (srcpad2);
gst_object_unref (sinkpad);
gst_object_unref (tee);
}
GST_END_TEST;
static GstFlowReturn
_fake_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
{
gst_buffer_unref (buffer);
return GST_FLOW_OK;
}
static GstFlowReturn
_fake_chain_error (GstPad * pad, GstObject * parent, GstBuffer * buffer)
{
gst_buffer_unref (buffer);
return GST_FLOW_ERROR;
}
GST_START_TEST (test_flow_aggregation)
{
GstPad *mysrc, *mysink1, *mysink2;
GstPad *teesink, *teesrc1, *teesrc2;
GstElement *tee;
GstBuffer *buffer;
GstSegment segment;
GstCaps *caps;
caps = gst_caps_new_empty_simple ("test/test");
tee = gst_element_factory_make ("tee", NULL);
fail_unless (tee != NULL);
teesink = gst_element_get_static_pad (tee, "sink");
fail_unless (teesink != NULL);
teesrc1 = gst_element_get_request_pad (tee, "src_%u");
fail_unless (teesrc1 != NULL);
teesrc2 = gst_element_get_request_pad (tee, "src_%u");
fail_unless (teesrc2 != NULL);
GST_DEBUG ("Creating mysink1");
mysink1 = gst_pad_new ("mysink1", GST_PAD_SINK);
gst_pad_set_chain_function (mysink1, _fake_chain);
gst_pad_set_active (mysink1, TRUE);
GST_DEBUG ("Creating mysink2");
mysink2 = gst_pad_new ("mysink2", GST_PAD_SINK);
gst_pad_set_chain_function (mysink2, _fake_chain);
gst_pad_set_active (mysink2, TRUE);
GST_DEBUG ("Creating mysrc");
mysrc = gst_pad_new ("mysrc", GST_PAD_SRC);
gst_pad_set_active (mysrc, TRUE);
gst_segment_init (&segment, GST_FORMAT_BYTES);
gst_pad_push_event (mysrc, gst_event_new_stream_start ("test"));
gst_pad_set_caps (mysrc, caps);
gst_pad_push_event (mysrc, gst_event_new_segment (&segment));
fail_unless (gst_pad_link (mysrc, teesink) == GST_PAD_LINK_OK);
fail_unless (gst_pad_link (teesrc1, mysink1) == GST_PAD_LINK_OK);
fail_unless (gst_pad_link (teesrc2, mysink2) == GST_PAD_LINK_OK);
fail_unless (gst_element_set_state (tee,
GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS);
buffer = gst_buffer_new ();
#if 0
gst_buffer_set_caps (buffer, caps);
#endif
GST_DEBUG ("Try to push a buffer");
/* First check if everything works in normal state */
fail_unless (gst_pad_push (mysrc, gst_buffer_ref (buffer)) == GST_FLOW_OK);
/* One pad being in wrong state must result in wrong state */
GST_DEBUG ("Trying to push with mysink2 disabled");
gst_pad_set_active (mysink2, FALSE);
fail_unless (gst_pad_push (mysrc,
gst_buffer_ref (buffer)) == GST_FLOW_FLUSHING);
GST_DEBUG ("Trying to push with mysink2 disabled");
gst_pad_set_active (mysink1, FALSE);
gst_pad_set_active (mysink2, TRUE);
fail_unless (gst_pad_push (mysrc,
gst_buffer_ref (buffer)) == GST_FLOW_FLUSHING);
GST_DEBUG ("Trying to push with mysink2 and mysink1 disabled");
gst_pad_set_active (mysink2, FALSE);
fail_unless (gst_pad_push (mysrc,
gst_buffer_ref (buffer)) == GST_FLOW_FLUSHING);
/* Test if everything still works in normal state */
GST_DEBUG ("Reactivate both pads and try pushing");
gst_pad_set_active (mysink1, TRUE);
gst_pad_set_active (mysink2, TRUE);
fail_unless (gst_pad_push (mysrc, gst_buffer_ref (buffer)) == GST_FLOW_OK);
/* One unlinked pad must return OK, two unlinked pads must return NOT_LINKED */
GST_DEBUG ("Pushing with mysink1 unlinked");
fail_unless (gst_pad_unlink (teesrc1, mysink1) == TRUE);
fail_unless (gst_pad_push (mysrc, gst_buffer_ref (buffer)) == GST_FLOW_OK);
GST_DEBUG ("Pushing with mysink2 unlinked");
fail_unless (gst_pad_link (teesrc1, mysink1) == GST_PAD_LINK_OK);
fail_unless (gst_pad_unlink (teesrc2, mysink2) == TRUE);
fail_unless (gst_pad_push (mysrc, gst_buffer_ref (buffer)) == GST_FLOW_OK);
GST_DEBUG ("Pushing with mysink1 AND mysink2 unlinked");
fail_unless (gst_pad_unlink (teesrc1, mysink1) == TRUE);
fail_unless (gst_pad_push (mysrc,
gst_buffer_ref (buffer)) == GST_FLOW_NOT_LINKED);
/* Test if everything still works in normal state */
GST_DEBUG ("Relink both pads and try pushing");
fail_unless (gst_pad_link (teesrc1, mysink1) == GST_PAD_LINK_OK);
fail_unless (gst_pad_link (teesrc2, mysink2) == GST_PAD_LINK_OK);
fail_unless (gst_pad_push (mysrc, gst_buffer_ref (buffer)) == GST_FLOW_OK);
/* One pad returning ERROR should result in ERROR */
GST_DEBUG ("Pushing with mysink1 returning GST_FLOW_ERROR");
gst_pad_set_chain_function (mysink1, _fake_chain_error);
fail_unless (gst_pad_push (mysrc, gst_buffer_ref (buffer)) == GST_FLOW_ERROR);
GST_DEBUG ("Pushing with mysink2 returning GST_FLOW_ERROR");
gst_pad_set_chain_function (mysink1, _fake_chain);
gst_pad_set_chain_function (mysink2, _fake_chain_error);
fail_unless (gst_pad_push (mysrc, gst_buffer_ref (buffer)) == GST_FLOW_ERROR);
GST_DEBUG ("Pushing with mysink1 AND mysink2 returning GST_FLOW_ERROR");
gst_pad_set_chain_function (mysink1, _fake_chain_error);
fail_unless (gst_pad_push (mysrc, gst_buffer_ref (buffer)) == GST_FLOW_ERROR);
/* And now everything still needs to work */
GST_DEBUG ("Try pushing with everything ok");
gst_pad_set_chain_function (mysink1, _fake_chain);
gst_pad_set_chain_function (mysink2, _fake_chain);
fail_unless (gst_pad_push (mysrc, gst_buffer_ref (buffer)) == GST_FLOW_OK);
fail_unless (gst_element_set_state (tee,
GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS);
fail_unless (gst_pad_unlink (mysrc, teesink) == TRUE);
fail_unless (gst_pad_unlink (teesrc1, mysink1) == TRUE);
fail_unless (gst_pad_unlink (teesrc2, mysink2) == TRUE);
gst_object_unref (teesink);
gst_object_unref (teesrc1);
gst_object_unref (teesrc2);
gst_element_release_request_pad (tee, teesrc1);
gst_element_release_request_pad (tee, teesrc2);
gst_object_unref (tee);
gst_object_unref (mysink1);
gst_object_unref (mysink2);
gst_object_unref (mysrc);
gst_caps_unref (caps);
gst_buffer_unref (buffer);
}
GST_END_TEST;
GST_START_TEST (test_request_pads)
{
GstElement *tee;
GstPad *srcpad1, *srcpad2, *srcpad3, *srcpad4;
tee = gst_check_setup_element ("tee");
srcpad1 = gst_element_get_request_pad (tee, "src_%u");
fail_unless (srcpad1 != NULL);
fail_unless_equals_string (GST_OBJECT_NAME (srcpad1), "src_0");
srcpad2 = gst_element_get_request_pad (tee, "src_100");
fail_unless (srcpad2 != NULL);
fail_unless_equals_string (GST_OBJECT_NAME (srcpad2), "src_100");
srcpad3 = gst_element_get_request_pad (tee, "src_10");
fail_unless (srcpad3 != NULL);
fail_unless_equals_string (GST_OBJECT_NAME (srcpad3), "src_10");
srcpad4 = gst_element_get_request_pad (tee, "src_%u");
fail_unless (srcpad4 != NULL);
gst_object_unref (srcpad1);
gst_object_unref (srcpad2);
gst_object_unref (srcpad3);
gst_object_unref (srcpad4);
gst_object_unref (tee);
}
GST_END_TEST;
static Suite *
tee_suite (void)
{
Suite *s = suite_create ("tee");
TCase *tc_chain = tcase_create ("general");
/* Set the timeout to a much larger time - 3 minutes */
tcase_set_timeout (tc_chain, 180);
suite_add_tcase (s, tc_chain);
tcase_add_test (tc_chain, test_num_buffers);
tcase_add_test (tc_chain, test_stress);
tcase_add_test (tc_chain, test_release_while_buffer_alloc);
tcase_add_test (tc_chain, test_release_while_second_buffer_alloc);
tcase_add_test (tc_chain, test_internal_links);
tcase_add_test (tc_chain, test_flow_aggregation);
tcase_add_test (tc_chain, test_request_pads);
return s;
}
GST_CHECK_MAIN (tee);