tests/check/elements/opus.c - mtk-gst-plugins-bad-debian - Git at Google

 /* GStreamer
  *
  * unit test for opus
  *
  * Copyright (C) <2011> Vincent Penquerc'h <vincent.penquerch@collbaora.co.uk>
  *
  * 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 <gst/check/gstcheck.h>

 #if G_BYTE_ORDER == G_BIG_ENDIAN
 #define AFORMAT "S16BE"
 #else
 #define AFORMAT "S16LE"
 #endif

 #define AUDIO_CAPS_STRING "audio/x-raw, " \
                            "format = (string) " AFORMAT ", "\
                            "layout = (string) interleaved, " \
                            "rate = (int) 48000, " \
                            "channels = (int) 1 "

 static const guint8 opus_ogg_id_header[19] = {
   0x4f, 0x70, 0x75, 0x73, 0x48, 0x65, 0x61, 0x64, 0x00, 0x02, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00
 };

 /* A lot of these taken from the vorbisdec test */

 /* For ease of programming we use globals to keep refs for our floating
  * src and sink pads we create; otherwise we always have to do get_pad,
  * get_peer, and then remove references in every test function */
 static GstPad *mydecsrcpad, *mydecsinkpad;
 static GstPad *myencsrcpad, *myencsinkpad;

 static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_SINK,
     GST_PAD_ALWAYS,
     GST_STATIC_CAPS_ANY);
 static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
     GST_PAD_ALWAYS,
     GST_STATIC_CAPS_ANY);

 static GstElement *
 setup_opusdec (void)
 {
   GstElement *opusdec;

   GST_DEBUG ("setup_opusdec");
   opusdec = gst_check_setup_element ("opusdec");
   mydecsrcpad = gst_check_setup_src_pad (opusdec, &srctemplate);
   mydecsinkpad = gst_check_setup_sink_pad (opusdec, &sinktemplate);
   gst_pad_set_active (mydecsrcpad, TRUE);
   gst_pad_set_active (mydecsinkpad, TRUE);

   return opusdec;
 }

 static void
 cleanup_opusdec (GstElement * opusdec)
 {
   GST_DEBUG ("cleanup_opusdec");
   gst_element_set_state (opusdec, GST_STATE_NULL);

   gst_pad_set_active (mydecsrcpad, FALSE);
   gst_pad_set_active (mydecsinkpad, FALSE);
   gst_check_teardown_src_pad (opusdec);
   gst_check_teardown_sink_pad (opusdec);
   gst_check_teardown_element (opusdec);
 }

 static GstElement *
 setup_opusenc (void)
 {
   GstElement *opusenc;

   GST_DEBUG ("setup_opusenc");
   opusenc = gst_check_setup_element ("opusenc");
   myencsrcpad = gst_check_setup_src_pad (opusenc, &srctemplate);
   myencsinkpad = gst_check_setup_sink_pad (opusenc, &sinktemplate);
   gst_pad_set_active (myencsrcpad, TRUE);
   gst_pad_set_active (myencsinkpad, TRUE);

   return opusenc;
 }

 static void
 cleanup_opusenc (GstElement * opusenc)
 {
   GST_DEBUG ("cleanup_opusenc");
   gst_element_set_state (opusenc, GST_STATE_NULL);

   gst_pad_set_active (myencsrcpad, FALSE);
   gst_pad_set_active (myencsinkpad, FALSE);
   gst_check_teardown_src_pad (opusenc);
   gst_check_teardown_sink_pad (opusenc);
   gst_check_teardown_element (opusenc);
 }

 static void
 check_buffers (guint expected)
 {
   GstBuffer *outbuffer;
   guint i, num_buffers;

   /* check buffers are the type we expect */
   num_buffers = g_list_length (buffers);
   fail_unless (num_buffers >= expected);
   for (i = 0; i < num_buffers; ++i) {
     outbuffer = GST_BUFFER (buffers->data);
     fail_if (outbuffer == NULL);
     fail_if (gst_buffer_get_size (outbuffer) == 0);

     buffers = g_list_remove (buffers, outbuffer);

     ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
     gst_buffer_unref (outbuffer);
     outbuffer = NULL;
   }
 }

 GST_START_TEST (test_opus_id_header)
 {
   GstElement *opusdec;
   GstBuffer *inbuffer;
   GstCaps *caps;

   opusdec = setup_opusdec ();
   fail_unless (gst_element_set_state (opusdec,
           GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
       "could not set to playing");

   caps = gst_caps_new_empty_simple ("audio/x-opus");
   gst_check_setup_events (mydecsrcpad, opusdec, caps, GST_FORMAT_TIME);
   gst_caps_unref (caps);

   inbuffer = gst_buffer_new_and_alloc (sizeof (opus_ogg_id_header));
   gst_buffer_fill (inbuffer, 0, opus_ogg_id_header,
       sizeof (opus_ogg_id_header));
   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
   gst_buffer_ref (inbuffer);

   /* pushing gives away my reference ... */
   fail_unless (gst_pad_push (mydecsrcpad, inbuffer) == GST_FLOW_OK);
   /* ... and nothing ends up on the global buffer list */
   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
   gst_buffer_unref (inbuffer);
   check_buffers (0);

   /* cleanup */
   cleanup_opusdec (opusdec);
 }

 GST_END_TEST;

 GST_START_TEST (test_opus_encode_nothing)
 {
   GstElement *opusenc;

   opusenc = setup_opusenc ();
   fail_unless (gst_element_set_state (opusenc,
           GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
       "could not set to playing");

   fail_unless (gst_pad_push_event (myencsrcpad, gst_event_new_eos ()) == TRUE);

   fail_unless (gst_element_set_state (opusenc,
           GST_STATE_READY) == GST_STATE_CHANGE_SUCCESS,
       "could not set to ready");

   /* cleanup */
   cleanup_opusenc (opusenc);
 }

 GST_END_TEST;

 GST_START_TEST (test_opus_decode_nothing)
 {
   GstElement *opusdec;

   opusdec = setup_opusdec ();
   fail_unless (gst_element_set_state (opusdec,
           GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
       "could not set to playing");

   fail_unless (gst_pad_push_event (mydecsrcpad, gst_event_new_eos ()) == TRUE);

   fail_unless (gst_element_set_state (opusdec,
           GST_STATE_READY) == GST_STATE_CHANGE_SUCCESS,
       "could not set to ready");

   /* cleanup */
   cleanup_opusdec (opusdec);
 }

 GST_END_TEST;

 GST_START_TEST (test_opus_encode_samples)
 {
   const unsigned int nsamples = 4096;
   GstElement *opusenc;
   GstBuffer *inbuffer;
   GstCaps *caps;

   opusenc = setup_opusenc ();

   fail_unless (gst_element_set_state (opusenc,
           GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
       "could not set to playing");

   inbuffer = gst_buffer_new_and_alloc (nsamples * 2);
   gst_buffer_memset (inbuffer, 0, 0, nsamples * 2);

   GST_BUFFER_TIMESTAMP (inbuffer) = GST_BUFFER_OFFSET (inbuffer) = 0;
   GST_BUFFER_DURATION (inbuffer) = GST_CLOCK_TIME_NONE;
   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

   caps = gst_caps_from_string (AUDIO_CAPS_STRING);
   fail_unless (caps != NULL);
   gst_check_setup_events (myencsrcpad, opusenc, caps, GST_FORMAT_TIME);
   gst_caps_unref (caps);
   gst_buffer_ref (inbuffer);

   /* pushing gives away my reference ... */
   fail_unless (gst_pad_push (myencsrcpad, inbuffer) == GST_FLOW_OK);
   /* ... and nothing ends up on the global buffer list */
   fail_unless (gst_pad_push_event (myencsrcpad, gst_event_new_eos ()) == TRUE);

   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
   gst_buffer_unref (inbuffer);

   fail_unless (gst_element_set_state (opusenc,
           GST_STATE_READY) == GST_STATE_CHANGE_SUCCESS,
       "could not set to ready");

   /* default frame size is 20 ms, at 48000 Hz that's 960 samples */
   check_buffers ((nsamples + 959) / 960);

   /* cleanup */
   cleanup_opusenc (opusenc);
   g_list_free (buffers);
 }

 GST_END_TEST;

 GST_START_TEST (test_opus_encode_properties)
 {
   const unsigned int nsamples = 4096;
   enum
   { steps = 20 };
   GstElement *opusenc;
   GstBuffer *inbuffer;
   GstCaps *caps;
   unsigned int step;
   static const struct
   {
     const char *param;
     int value;
   } param_changes[steps] = {
     {
     "frame-size", 40}, {
     "inband-fec", 1}, {
     "complexity", 5}, {
     "bandwidth", 1104}, {
     "frame-size", 2}, {
     "max-payload-size", 80}, {
     "frame-size", 60}, {
     "max-payload-size", 900}, {
     "complexity", 1}, {
     "bitrate", 30000}, {
     "frame-size", 10}, {
     "bitrate", 300000}, {
     "inband-fec", 0}, {
     "frame-size", 5}, {
     "bandwidth", 1101}, {
     "frame-size", 10}, {
     "bitrate", 500000}, {
     "frame-size", 5}, {
     "bitrate", 80000}, {
   "complexity", 8},};

   opusenc = setup_opusenc ();

   fail_unless (gst_element_set_state (opusenc,
           GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
       "could not set to playing");

   caps = gst_caps_from_string (AUDIO_CAPS_STRING);
   fail_unless (caps != NULL);

   gst_check_setup_events (myencsrcpad, opusenc, caps, GST_FORMAT_TIME);

   for (step = 0; step < steps; ++step) {
     GstSegment segment;

     gst_segment_init (&segment, GST_FORMAT_TIME);
     gst_pad_push_event (myencsrcpad, gst_event_new_segment (&segment));

     inbuffer = gst_buffer_new_and_alloc (nsamples * 2);
     gst_buffer_memset (inbuffer, 0, 0, nsamples * 2);

     GST_BUFFER_TIMESTAMP (inbuffer) = GST_BUFFER_OFFSET (inbuffer) = 0;
     GST_BUFFER_DURATION (inbuffer) = GST_CLOCK_TIME_NONE;
     ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

     gst_buffer_ref (inbuffer);

     /* pushing gives away my reference ... */
     fail_unless (gst_pad_push (myencsrcpad, inbuffer) == GST_FLOW_OK);
     /* ... and nothing ends up on the global buffer list */
     fail_unless (gst_pad_push_event (myencsrcpad,
             gst_event_new_eos ()) == TRUE);

     ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
     gst_buffer_unref (inbuffer);

     /* change random parameters */
     g_object_set (opusenc, param_changes[step].param, param_changes[step].value,
         NULL);

     check_buffers (1);

     fail_unless (gst_pad_push_event (myencsrcpad,
             gst_event_new_flush_start ()) == TRUE);
     fail_unless (gst_pad_push_event (myencsrcpad,
             gst_event_new_flush_stop (TRUE)) == TRUE);
   }

   gst_caps_unref (caps);

   fail_unless (gst_element_set_state (opusenc,
           GST_STATE_READY) == GST_STATE_CHANGE_SUCCESS,
       "could not set to ready");

   /* cleanup */
   cleanup_opusenc (opusenc);
   g_list_free (buffers);
 }

 GST_END_TEST;

 static Suite *
 opus_suite (void)
 {
   Suite *s = suite_create ("opus");
   TCase *tc_chain = tcase_create ("general");

   suite_add_tcase (s, tc_chain);

 #define X if (0)
   tcase_add_test (tc_chain, test_opus_id_header);
   tcase_add_test (tc_chain, test_opus_encode_nothing);
   tcase_add_test (tc_chain, test_opus_decode_nothing);
   tcase_add_test (tc_chain, test_opus_encode_samples);
   tcase_add_test (tc_chain, test_opus_encode_properties);
 #undef X

   return s;
 }

 int
 main (int argc, char **argv)
 {
   int nf;

   Suite *s = opus_suite ();
   SRunner *sr = srunner_create (s);

   gst_check_init (&argc, &argv);

   srunner_run_all (sr, CK_NORMAL);
   nf = srunner_ntests_failed (sr);
   srunner_free (sr);

   return nf;
 }
	/* GStreamer
	*
	* unit test for opus
	*
	* Copyright (C) <2011> Vincent Penquerc'h <vincent.penquerch@collbaora.co.uk>
	*
	* 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 <gst/check/gstcheck.h>

	#if G_BYTE_ORDER == G_BIG_ENDIAN
	#define AFORMAT "S16BE"
	#else
	#define AFORMAT "S16LE"
	#endif

	#define AUDIO_CAPS_STRING "audio/x-raw, " \
	"format = (string) " AFORMAT ", "\
	"layout = (string) interleaved, " \
	"rate = (int) 48000, " \
	"channels = (int) 1 "

	static const guint8 opus_ogg_id_header[19] = {
	0x4f, 0x70, 0x75, 0x73, 0x48, 0x65, 0x61, 0x64, 0x00, 0x02, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00
	};

	/* A lot of these taken from the vorbisdec test */

	/* For ease of programming we use globals to keep refs for our floating
	* src and sink pads we create; otherwise we always have to do get_pad,
	* get_peer, and then remove references in every test function */
	static GstPad mydecsrcpad, mydecsinkpad;
	static GstPad myencsrcpad, myencsinkpad;

	static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
	GST_PAD_SINK,
	GST_PAD_ALWAYS,
	GST_STATIC_CAPS_ANY);
	static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
	GST_PAD_SRC,
	GST_PAD_ALWAYS,
	GST_STATIC_CAPS_ANY);

	static GstElement *
	setup_opusdec (void)
	{
	GstElement *opusdec;

	GST_DEBUG ("setup_opusdec");
	opusdec = gst_check_setup_element ("opusdec");
	mydecsrcpad = gst_check_setup_src_pad (opusdec, &srctemplate);
	mydecsinkpad = gst_check_setup_sink_pad (opusdec, &sinktemplate);
	gst_pad_set_active (mydecsrcpad, TRUE);
	gst_pad_set_active (mydecsinkpad, TRUE);

	return opusdec;
	}

	static void
	cleanup_opusdec (GstElement * opusdec)
	{
	GST_DEBUG ("cleanup_opusdec");
	gst_element_set_state (opusdec, GST_STATE_NULL);

	gst_pad_set_active (mydecsrcpad, FALSE);
	gst_pad_set_active (mydecsinkpad, FALSE);
	gst_check_teardown_src_pad (opusdec);
	gst_check_teardown_sink_pad (opusdec);
	gst_check_teardown_element (opusdec);
	}

	static GstElement *
	setup_opusenc (void)
	{
	GstElement *opusenc;

	GST_DEBUG ("setup_opusenc");
	opusenc = gst_check_setup_element ("opusenc");
	myencsrcpad = gst_check_setup_src_pad (opusenc, &srctemplate);
	myencsinkpad = gst_check_setup_sink_pad (opusenc, &sinktemplate);
	gst_pad_set_active (myencsrcpad, TRUE);
	gst_pad_set_active (myencsinkpad, TRUE);

	return opusenc;
	}

	static void
	cleanup_opusenc (GstElement * opusenc)
	{
	GST_DEBUG ("cleanup_opusenc");
	gst_element_set_state (opusenc, GST_STATE_NULL);

	gst_pad_set_active (myencsrcpad, FALSE);
	gst_pad_set_active (myencsinkpad, FALSE);
	gst_check_teardown_src_pad (opusenc);
	gst_check_teardown_sink_pad (opusenc);
	gst_check_teardown_element (opusenc);
	}

	static void
	check_buffers (guint expected)
	{
	GstBuffer *outbuffer;
	guint i, num_buffers;

	/* check buffers are the type we expect */
	num_buffers = g_list_length (buffers);
	fail_unless (num_buffers >= expected);
	for (i = 0; i < num_buffers; ++i) {
	outbuffer = GST_BUFFER (buffers->data);
	fail_if (outbuffer == NULL);
	fail_if (gst_buffer_get_size (outbuffer) == 0);

	buffers = g_list_remove (buffers, outbuffer);

	ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
	gst_buffer_unref (outbuffer);
	outbuffer = NULL;
	}
	}

	GST_START_TEST (test_opus_id_header)
	{
	GstElement *opusdec;
	GstBuffer *inbuffer;
	GstCaps *caps;

	opusdec = setup_opusdec ();
	fail_unless (gst_element_set_state (opusdec,
	GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
	"could not set to playing");

	caps = gst_caps_new_empty_simple ("audio/x-opus");
	gst_check_setup_events (mydecsrcpad, opusdec, caps, GST_FORMAT_TIME);
	gst_caps_unref (caps);

	inbuffer = gst_buffer_new_and_alloc (sizeof (opus_ogg_id_header));
	gst_buffer_fill (inbuffer, 0, opus_ogg_id_header,
	sizeof (opus_ogg_id_header));
	ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
	gst_buffer_ref (inbuffer);

	/* pushing gives away my reference ... */
	fail_unless (gst_pad_push (mydecsrcpad, inbuffer) == GST_FLOW_OK);
	/* ... and nothing ends up on the global buffer list */
	ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
	gst_buffer_unref (inbuffer);
	check_buffers (0);

	/* cleanup */
	cleanup_opusdec (opusdec);
	}

	GST_END_TEST;

	GST_START_TEST (test_opus_encode_nothing)
	{
	GstElement *opusenc;

	opusenc = setup_opusenc ();
	fail_unless (gst_element_set_state (opusenc,
	GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
	"could not set to playing");

	fail_unless (gst_pad_push_event (myencsrcpad, gst_event_new_eos ()) == TRUE);

	fail_unless (gst_element_set_state (opusenc,
	GST_STATE_READY) == GST_STATE_CHANGE_SUCCESS,
	"could not set to ready");

	/* cleanup */
	cleanup_opusenc (opusenc);
	}

	GST_END_TEST;

	GST_START_TEST (test_opus_decode_nothing)
	{
	GstElement *opusdec;

	opusdec = setup_opusdec ();
	fail_unless (gst_element_set_state (opusdec,
	GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
	"could not set to playing");

	fail_unless (gst_pad_push_event (mydecsrcpad, gst_event_new_eos ()) == TRUE);

	fail_unless (gst_element_set_state (opusdec,
	GST_STATE_READY) == GST_STATE_CHANGE_SUCCESS,
	"could not set to ready");

	/* cleanup */
	cleanup_opusdec (opusdec);
	}

	GST_END_TEST;

	GST_START_TEST (test_opus_encode_samples)
	{
	const unsigned int nsamples = 4096;
	GstElement *opusenc;
	GstBuffer *inbuffer;
	GstCaps *caps;

	opusenc = setup_opusenc ();

	fail_unless (gst_element_set_state (opusenc,
	GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
	"could not set to playing");

	inbuffer = gst_buffer_new_and_alloc (nsamples * 2);
	gst_buffer_memset (inbuffer, 0, 0, nsamples * 2);

	GST_BUFFER_TIMESTAMP (inbuffer) = GST_BUFFER_OFFSET (inbuffer) = 0;
	GST_BUFFER_DURATION (inbuffer) = GST_CLOCK_TIME_NONE;
	ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

	caps = gst_caps_from_string (AUDIO_CAPS_STRING);
	fail_unless (caps != NULL);
	gst_check_setup_events (myencsrcpad, opusenc, caps, GST_FORMAT_TIME);
	gst_caps_unref (caps);
	gst_buffer_ref (inbuffer);

	/* pushing gives away my reference ... */
	fail_unless (gst_pad_push (myencsrcpad, inbuffer) == GST_FLOW_OK);
	/* ... and nothing ends up on the global buffer list */
	fail_unless (gst_pad_push_event (myencsrcpad, gst_event_new_eos ()) == TRUE);

	ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
	gst_buffer_unref (inbuffer);

	fail_unless (gst_element_set_state (opusenc,
	GST_STATE_READY) == GST_STATE_CHANGE_SUCCESS,
	"could not set to ready");

	/* default frame size is 20 ms, at 48000 Hz that's 960 samples */
	check_buffers ((nsamples + 959) / 960);

	/* cleanup */
	cleanup_opusenc (opusenc);
	g_list_free (buffers);
	}

	GST_END_TEST;

	GST_START_TEST (test_opus_encode_properties)
	{
	const unsigned int nsamples = 4096;
	enum
	{ steps = 20 };
	GstElement *opusenc;
	GstBuffer *inbuffer;
	GstCaps *caps;
	unsigned int step;
	static const struct
	{
	const char *param;
	int value;
	} param_changes[steps] = {
	{
	"frame-size", 40}, {
	"inband-fec", 1}, {
	"complexity", 5}, {
	"bandwidth", 1104}, {
	"frame-size", 2}, {
	"max-payload-size", 80}, {
	"frame-size", 60}, {
	"max-payload-size", 900}, {
	"complexity", 1}, {
	"bitrate", 30000}, {
	"frame-size", 10}, {
	"bitrate", 300000}, {
	"inband-fec", 0}, {
	"frame-size", 5}, {
	"bandwidth", 1101}, {
	"frame-size", 10}, {
	"bitrate", 500000}, {
	"frame-size", 5}, {
	"bitrate", 80000}, {
	"complexity", 8},};

	opusenc = setup_opusenc ();

	fail_unless (gst_element_set_state (opusenc,
	GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
	"could not set to playing");

	caps = gst_caps_from_string (AUDIO_CAPS_STRING);
	fail_unless (caps != NULL);

	gst_check_setup_events (myencsrcpad, opusenc, caps, GST_FORMAT_TIME);

	for (step = 0; step < steps; ++step) {
	GstSegment segment;

	gst_segment_init (&segment, GST_FORMAT_TIME);
	gst_pad_push_event (myencsrcpad, gst_event_new_segment (&segment));

	inbuffer = gst_buffer_new_and_alloc (nsamples * 2);
	gst_buffer_memset (inbuffer, 0, 0, nsamples * 2);

	GST_BUFFER_TIMESTAMP (inbuffer) = GST_BUFFER_OFFSET (inbuffer) = 0;
	GST_BUFFER_DURATION (inbuffer) = GST_CLOCK_TIME_NONE;
	ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

	gst_buffer_ref (inbuffer);

	/* pushing gives away my reference ... */
	fail_unless (gst_pad_push (myencsrcpad, inbuffer) == GST_FLOW_OK);
	/* ... and nothing ends up on the global buffer list */
	fail_unless (gst_pad_push_event (myencsrcpad,
	gst_event_new_eos ()) == TRUE);

	ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
	gst_buffer_unref (inbuffer);

	/* change random parameters */
	g_object_set (opusenc, param_changes[step].param, param_changes[step].value,
	NULL);

	check_buffers (1);

	fail_unless (gst_pad_push_event (myencsrcpad,
	gst_event_new_flush_start ()) == TRUE);
	fail_unless (gst_pad_push_event (myencsrcpad,
	gst_event_new_flush_stop (TRUE)) == TRUE);
	}

	gst_caps_unref (caps);

	fail_unless (gst_element_set_state (opusenc,
	GST_STATE_READY) == GST_STATE_CHANGE_SUCCESS,
	"could not set to ready");

	/* cleanup */
	cleanup_opusenc (opusenc);
	g_list_free (buffers);
	}

	GST_END_TEST;

	static Suite *
	opus_suite (void)
	{
	Suite *s = suite_create ("opus");
	TCase *tc_chain = tcase_create ("general");

	suite_add_tcase (s, tc_chain);

	#define X if (0)
	tcase_add_test (tc_chain, test_opus_id_header);
	tcase_add_test (tc_chain, test_opus_encode_nothing);
	tcase_add_test (tc_chain, test_opus_decode_nothing);
	tcase_add_test (tc_chain, test_opus_encode_samples);
	tcase_add_test (tc_chain, test_opus_encode_properties);
	#undef X

	return s;
	}

	int
	main (int argc, char **argv)
	{
	int nf;

	Suite *s = opus_suite ();
	SRunner *sr = srunner_create (s);

	gst_check_init (&argc, &argv);

	srunner_run_all (sr, CK_NORMAL);
	nf = srunner_ntests_failed (sr);
	srunner_free (sr);

	return nf;
	}