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

 /* GStreamer
  *
  * Copyright (C) 2006 Thomas Vander Stichele <thomas at apestaart dot org>
  *
  * 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 "config.h"
 #include <string.h>
 #include <unistd.h>

 #include <gst/check/gstcheck.h>
 #include <gst/audio/audio.h>
 #include "../../gst/gdp/dataprotocol.c"

 /* 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 *mysrcpad, *myshsrcpad, *mysinkpad;

 #define FORMATS "{ S8, "GST_AUDIO_NE(S16)" }"

 #define AUDIO_CAPS_TEMPLATE_STRING \
   "audio/x-raw, " \
     "format = (string) "FORMATS", " \
     "rate = (int) [ 1, MAX ], " \
     "channels = (int) [ 1, 8 ]"

 #define AUDIO_CAPS_STRING \
   "audio/x-raw, " \
     "format = (string) "GST_AUDIO_NE(S16)", " \
     "rate = (int) 1000, " \
     "channels = (int) 2"


 static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_SINK,
     GST_PAD_ALWAYS,
     GST_STATIC_CAPS ("application/x-gdp")
     );
 static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
     GST_PAD_ALWAYS,
     GST_STATIC_CAPS (AUDIO_CAPS_TEMPLATE_STRING)
     );

 /* takes over reference for outcaps */
 static GstElement *
 setup_gdppay (void)
 {
   GstElement *gdppay;

   GST_DEBUG ("setup_gdppay");
   gdppay = gst_check_setup_element ("gdppay");
   mysrcpad = gst_check_setup_src_pad (gdppay, &srctemplate);
   mysinkpad = gst_check_setup_sink_pad (gdppay, &sinktemplate);
   gst_pad_set_active (mysrcpad, TRUE);
   gst_pad_set_active (mysinkpad, TRUE);

   return gdppay;
 }

 static void
 cleanup_gdppay (GstElement * gdppay)
 {
   GST_DEBUG ("cleanup_gdppay");

   if (mysrcpad)
     gst_pad_set_active (mysrcpad, FALSE);
   if (myshsrcpad)
     gst_pad_set_active (myshsrcpad, FALSE);
   gst_pad_set_active (mysinkpad, FALSE);
   gst_check_teardown_src_pad (gdppay);
   gst_check_teardown_sink_pad (gdppay);
   gst_check_teardown_element (gdppay);
   mysrcpad = NULL;
   myshsrcpad = NULL;
 }

 static void
 check_stream_start_buffer (gint refcount)
 {
   GstBuffer *outbuffer;

   fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
   buffers = g_list_remove (buffers, outbuffer);
   ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", refcount);
   gst_buffer_unref (outbuffer);
 }

 static void
 check_caps_buffer (gint refcount, GstCaps * caps)
 {
   GstBuffer *outbuffer;
   gchar *caps_string = gst_caps_to_string (caps);
   guint length;

   fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
   buffers = g_list_remove (buffers, outbuffer);
   ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", refcount);
   length = GST_DP_HEADER_LENGTH + (strlen (caps_string) + 1);
   fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
   gst_buffer_unref (outbuffer);
   g_free (caps_string);
 }

 static void
 check_segment_buffer (gint refcount)
 {
   GstBuffer *outbuffer;

   fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
   buffers = g_list_remove (buffers, outbuffer);
   ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", refcount);
   gst_buffer_unref (outbuffer);
 }


 GST_START_TEST (test_audio)
 {
   GstCaps *caps;
   GstElement *gdppay;
   GstBuffer *inbuffer, *outbuffer;
   gint length;

   gdppay = setup_gdppay ();

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

   /* no buffer should be pushed yet, waiting for caps */
   fail_unless_equals_int (g_list_length (buffers), 0);

   GST_DEBUG ("first buffer");
   inbuffer = gst_buffer_new_and_alloc (4);
   gst_buffer_memset (inbuffer, 0, 0x00, 4);
   caps = gst_caps_from_string (AUDIO_CAPS_STRING);
   gst_check_setup_events (mysrcpad, gdppay, caps, GST_FORMAT_TIME);

   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

   /* pushing gives away my reference */
   fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);

   /* we should have four buffers now */
   fail_unless_equals_int (g_list_length (buffers), 4);

   /* first buffer is the stream-start event */
   check_stream_start_buffer (1);

   /* second buffer is the serialized caps */
   check_caps_buffer (1, caps);

   /* third buffer is the serialized new_segment event */
   check_segment_buffer (1);

   /* the fourth buffer is the GDP buffer for our pushed buffer */
   fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
   buffers = g_list_remove (buffers, outbuffer);
   ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
   length = GST_DP_HEADER_LENGTH + 4;
   fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
   gst_buffer_unref (outbuffer);

   /* second buffer */
   GST_DEBUG ("second buffer");
   inbuffer = gst_buffer_new_and_alloc (4);
   gst_buffer_memset (inbuffer, 0, 0x00, 4);

   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

   /* pushing gives away my reference */
   fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);

   fail_unless_equals_int (g_list_length (buffers), 1);
   fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
   buffers = g_list_remove (buffers, outbuffer);
   ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);

   /* the third output buffer is data */
   length = GST_DP_HEADER_LENGTH + 4;
   fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
   gst_buffer_unref (outbuffer);

   /* a third buffer without caps set explicitly; should work */
   GST_DEBUG ("Creating third buffer, no caps set");
   inbuffer = gst_buffer_new_and_alloc (4);
   gst_buffer_memset (inbuffer, 0, 0x00, 4);

   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

   /* pushing gives away my reference */
   fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);

   fail_unless_equals_int (g_list_length (buffers), 1);
   fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
   buffers = g_list_remove (buffers, outbuffer);
   ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);

   /* the fourth output buffer is data */
   length = GST_DP_HEADER_LENGTH + 4;
   fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
   gst_buffer_unref (outbuffer);


   fail_unless (gst_element_set_state (gdppay,
           GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS, "could not set to null");

   gst_caps_unref (caps);
   g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
   g_list_free (buffers);
   buffers = NULL;
   ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
   cleanup_gdppay (gdppay);
 }

 GST_END_TEST;

 static GstStaticPadTemplate shsrctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
     GST_PAD_ALWAYS,
     GST_STATIC_CAPS ("application/x-gst-test-streamheader")
     );


 static GstElement *
 setup_gdppay_streamheader (void)
 {
   GstElement *gdppay;

   GST_DEBUG ("setup_gdppay");
   gdppay = gst_check_setup_element ("gdppay");
   myshsrcpad = gst_check_setup_src_pad (gdppay, &shsrctemplate);
   mysinkpad = gst_check_setup_sink_pad (gdppay, &sinktemplate);
   gst_pad_set_active (myshsrcpad, TRUE);
   gst_pad_set_active (mysinkpad, TRUE);

   return gdppay;
 }

 /* this test serializes a stream that already has a streamheader of its own.
  * the streamheader should then be serialized and put on the GDP stream's
  * streamheader */
 GST_START_TEST (test_streamheader)
 {
   GstCaps *caps, *sinkcaps;
   GstElement *gdppay;
   GstBuffer *inbuffer, *outbuffer, *shbuffer;
   gchar *caps_string;
   gint length;
   GstStructure *structure;
   GValue array = { 0 };
   GValue value = { 0 };
   const GValue *sh;
   GArray *shbuffers;

   gdppay = setup_gdppay_streamheader ();

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

   /* no buffer should be pushed yet, still waiting for caps */
   fail_unless_equals_int (g_list_length (buffers), 0);

   GST_DEBUG ("first buffer");
   inbuffer = gst_buffer_new_and_alloc (4);
   gst_buffer_fill (inbuffer, 0, "head", 4);
   caps = gst_caps_from_string ("application/x-gst-test-streamheader");
   structure = gst_caps_get_structure (caps, 0);
   GST_BUFFER_FLAG_SET (inbuffer, GST_BUFFER_FLAG_HEADER);
   g_value_init (&array, GST_TYPE_ARRAY);
   g_value_init (&value, GST_TYPE_BUFFER);
   shbuffer = gst_buffer_copy (inbuffer);
   gst_value_set_buffer (&value, shbuffer);
   gst_buffer_unref (shbuffer);
   gst_value_array_append_value (&array, &value);
   g_value_unset (&value);
   gst_structure_set_value (structure, "streamheader", &array);
   g_value_unset (&array);
   caps_string = gst_caps_to_string (caps);

   gst_check_setup_events (myshsrcpad, gdppay, caps, GST_FORMAT_TIME);
   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

   /* pushing gives away my reference */
   fail_unless (gst_pad_push (myshsrcpad, inbuffer) == GST_FLOW_OK);

   /* we should have four buffers now */
   fail_unless_equals_int (g_list_length (buffers), 4);

   /* our sink pad should now have GDP caps with a streamheader that includes
    * GDP wrappings of our streamheader */
   sinkcaps = gst_pad_get_current_caps (mysinkpad);
   structure = gst_caps_get_structure (sinkcaps, 0);
   fail_unless_equals_string ((gchar *) gst_structure_get_name (structure),
       "application/x-gdp");
   fail_unless (gst_structure_has_field (structure, "streamheader"));
   sh = gst_structure_get_value (structure, "streamheader");
   fail_unless (G_VALUE_TYPE (sh) == GST_TYPE_ARRAY);
   shbuffers = g_value_peek_pointer (sh);
   /* a serialized stream-start-id, a serialized new_segment,
    * a serialized caps, and serialization of our
    * incoming streamheader */
   fail_unless_equals_int (shbuffers->len, 4);

   gst_caps_unref (sinkcaps);

   /* first buffer is the stream-start event */
   check_stream_start_buffer (1);

   /* second buffer is the serialized caps;
    * the element also holds a ref to it */
   check_caps_buffer (1, caps);

   /* third buffer is the serialized new_segment event;
    * the element also holds a ref to it */
   check_segment_buffer (1);

   /* the fourth buffer is the GDP buffer for our pushed buffer */
   fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
   buffers = g_list_remove (buffers, outbuffer);
   ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
   length = GST_DP_HEADER_LENGTH + 4;
   fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
   gst_buffer_unref (outbuffer);

   /* second buffer */
   GST_DEBUG ("second buffer");
   inbuffer = gst_buffer_new_and_alloc (4);
   gst_buffer_memset (inbuffer, 0, 0x02, 4);

   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

   /* pushing gives away my reference */
   fail_unless (gst_pad_push (myshsrcpad, inbuffer) == GST_FLOW_OK);

   fail_unless_equals_int (g_list_length (buffers), 1);
   fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
   buffers = g_list_remove (buffers, outbuffer);
   ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);

   /* the third output buffer is data */
   length = GST_DP_HEADER_LENGTH + 4;
   fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
   gst_buffer_unref (outbuffer);

   /* a third buffer without caps set explicitly; should work */
   GST_DEBUG ("Creating third buffer, no caps set");
   inbuffer = gst_buffer_new_and_alloc (4);
   gst_buffer_memset (inbuffer, 0, 0x03, 4);

   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

   /* pushing gives away my reference */
   fail_unless (gst_pad_push (myshsrcpad, inbuffer) == GST_FLOW_OK);

   fail_unless_equals_int (g_list_length (buffers), 1);
   fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
   buffers = g_list_remove (buffers, outbuffer);
   ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);

   /* the fourth output buffer is data */
   length = GST_DP_HEADER_LENGTH + 4;
   fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
   gst_buffer_unref (outbuffer);


   fail_unless (gst_element_set_state (gdppay,
           GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS, "could not set to null");

   gst_caps_unref (caps);
   g_free (caps_string);
   g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
   g_list_free (buffers);
   buffers = NULL;
   ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
   cleanup_gdppay (gdppay);
 }

 GST_END_TEST;


 GST_START_TEST (test_first_no_caps)
 {
   GstElement *gdppay;
   GstBuffer *inbuffer;

   gdppay = setup_gdppay ();

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

   gst_check_setup_events (mysrcpad, gdppay, NULL, GST_FORMAT_TIME);

   GST_DEBUG ("first buffer");
   inbuffer = gst_buffer_new_and_alloc (4);
   gst_buffer_memset (inbuffer, 0, 0x01, 4);
   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

   /* pushing should trigger an error */
   fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_NOT_NEGOTIATED);

   fail_unless_equals_int (g_list_length (buffers), 0);

   fail_unless (gst_element_set_state (gdppay,
           GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS, "could not set to null");

   g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
   g_list_free (buffers);
   buffers = NULL;
   ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
   cleanup_gdppay (gdppay);
 }

 GST_END_TEST;

 /* element should still work if no new_segment is sent before the first
  * buffer */
 GST_START_TEST (test_first_no_new_segment)
 {
   GstElement *gdppay;
   GstBuffer *inbuffer;
   GstCaps *caps;

   gdppay = setup_gdppay ();

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

   GST_DEBUG ("first buffer");
   inbuffer = gst_buffer_new_and_alloc (4);
   gst_buffer_memset (inbuffer, 0, 0x01, 4);
   caps = gst_caps_from_string (AUDIO_CAPS_STRING);
   gst_check_setup_events (mysrcpad, gdppay, caps, GST_FORMAT_TIME);
   gst_caps_unref (caps);

   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

   /* pushing gives away my reference */
   fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);

   /* we should have three buffers now;
    * one for the stream-start, one for an "invented" new segment,
    * one for GDP caps, and one with our buffer */
   fail_unless_equals_int (g_list_length (buffers), 4);

   fail_unless (gst_element_set_state (gdppay,
           GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS, "could not set to null");

   g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
   g_list_free (buffers);
   buffers = NULL;
   ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
   cleanup_gdppay (gdppay);
 }

 GST_END_TEST;

 GST_START_TEST (test_crc)
 {
   GstCaps *caps;
   GstElement *gdppay;
   GstBuffer *inbuffer, *outbuffer;
   gint length;
   GstMapInfo map;
   guint16 crc_calculated, crc_read;

   gdppay = setup_gdppay ();
   g_object_set (gdppay, "crc-header", TRUE, NULL);

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

   /* no buffer should be pushed yet, waiting for caps */
   fail_unless_equals_int (g_list_length (buffers), 0);

   GST_DEBUG ("first buffer");
   inbuffer = gst_buffer_new_and_alloc (4);
   gst_buffer_memset (inbuffer, 0, g_random_int () & 0xff, 4);
   caps = gst_caps_from_string (AUDIO_CAPS_STRING);
   gst_check_setup_events (mysrcpad, gdppay, caps, GST_FORMAT_TIME);

   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

   /* pushing gives away my reference */
   fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);

   /* we should have four buffers now */
   fail_unless_equals_int (g_list_length (buffers), 4);

   /* first buffer is the stream-start event */
   check_stream_start_buffer (1);

   /* second buffer is the serialized caps;
    * the element also holds a ref to it */
   check_caps_buffer (1, caps);

   /* third buffer is the serialized new_segment event */
   fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
   buffers = g_list_remove (buffers, outbuffer);
   ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);

   /* verify the header checksum */
   /* CRC's start at 58 in the header */
   outbuffer = gst_buffer_make_writable (outbuffer);
   gst_buffer_map (outbuffer, &map, GST_MAP_READWRITE);
   crc_calculated = gst_dp_crc (map.data, 58);
   crc_read = GST_READ_UINT16_BE (map.data + 58);
   fail_unless_equals_int (crc_calculated, crc_read);

   /* change a byte in the header and verify that the checksum now fails */
   map.data[0] = 0xff;
   crc_calculated = gst_dp_crc (map.data, 58);
   fail_if (crc_calculated == crc_read,
       "Introducing a byte error in the header should make the checksum fail");

   gst_buffer_unmap (outbuffer, &map);
   gst_buffer_unref (outbuffer);

   /* the fourth buffer is the GDP buffer for our pushed buffer */
   fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
   buffers = g_list_remove (buffers, outbuffer);
   ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
   length = GST_DP_HEADER_LENGTH + 4;
   fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
   gst_buffer_unref (outbuffer);

   fail_unless (gst_element_set_state (gdppay,
           GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS, "could not set to null");

   gst_caps_unref (caps);
   g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
   g_list_free (buffers);
   buffers = NULL;
   ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
   cleanup_gdppay (gdppay);
 }

 GST_END_TEST;


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

   suite_add_tcase (s, tc_chain);
   tcase_add_test (tc_chain, test_audio);
   tcase_add_test (tc_chain, test_first_no_caps);
   tcase_add_test (tc_chain, test_first_no_new_segment);
   tcase_add_test (tc_chain, test_streamheader);
   tcase_add_test (tc_chain, test_crc);

   return s;
 }

 GST_CHECK_MAIN (gdppay);
	/* GStreamer
	*
	* Copyright (C) 2006 Thomas Vander Stichele <thomas at apestaart dot org>
	*
	* 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 "config.h"
	#include <string.h>
	#include <unistd.h>

	#include <gst/check/gstcheck.h>
	#include <gst/audio/audio.h>
	#include "../../gst/gdp/dataprotocol.c"

	/* 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 mysrcpad, myshsrcpad, *mysinkpad;

	#define FORMATS "{ S8, "GST_AUDIO_NE(S16)" }"

	#define AUDIO_CAPS_TEMPLATE_STRING \
	"audio/x-raw, " \
	"format = (string) "FORMATS", " \
	"rate = (int) [ 1, MAX ], " \
	"channels = (int) [ 1, 8 ]"

	#define AUDIO_CAPS_STRING \
	"audio/x-raw, " \
	"format = (string) "GST_AUDIO_NE(S16)", " \
	"rate = (int) 1000, " \
	"channels = (int) 2"


	static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
	GST_PAD_SINK,
	GST_PAD_ALWAYS,
	GST_STATIC_CAPS ("application/x-gdp")
	);
	static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
	GST_PAD_SRC,
	GST_PAD_ALWAYS,
	GST_STATIC_CAPS (AUDIO_CAPS_TEMPLATE_STRING)
	);

	/* takes over reference for outcaps */
	static GstElement *
	setup_gdppay (void)
	{
	GstElement *gdppay;

	GST_DEBUG ("setup_gdppay");
	gdppay = gst_check_setup_element ("gdppay");
	mysrcpad = gst_check_setup_src_pad (gdppay, &srctemplate);
	mysinkpad = gst_check_setup_sink_pad (gdppay, &sinktemplate);
	gst_pad_set_active (mysrcpad, TRUE);
	gst_pad_set_active (mysinkpad, TRUE);

	return gdppay;
	}

	static void
	cleanup_gdppay (GstElement * gdppay)
	{
	GST_DEBUG ("cleanup_gdppay");

	if (mysrcpad)
	gst_pad_set_active (mysrcpad, FALSE);
	if (myshsrcpad)
	gst_pad_set_active (myshsrcpad, FALSE);
	gst_pad_set_active (mysinkpad, FALSE);
	gst_check_teardown_src_pad (gdppay);
	gst_check_teardown_sink_pad (gdppay);
	gst_check_teardown_element (gdppay);
	mysrcpad = NULL;
	myshsrcpad = NULL;
	}

	static void
	check_stream_start_buffer (gint refcount)
	{
	GstBuffer *outbuffer;

	fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
	buffers = g_list_remove (buffers, outbuffer);
	ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", refcount);
	gst_buffer_unref (outbuffer);
	}

	static void
	check_caps_buffer (gint refcount, GstCaps * caps)
	{
	GstBuffer *outbuffer;
	gchar *caps_string = gst_caps_to_string (caps);
	guint length;

	fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
	buffers = g_list_remove (buffers, outbuffer);
	ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", refcount);
	length = GST_DP_HEADER_LENGTH + (strlen (caps_string) + 1);
	fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
	gst_buffer_unref (outbuffer);
	g_free (caps_string);
	}

	static void
	check_segment_buffer (gint refcount)
	{
	GstBuffer *outbuffer;

	fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
	buffers = g_list_remove (buffers, outbuffer);
	ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", refcount);
	gst_buffer_unref (outbuffer);
	}


	GST_START_TEST (test_audio)
	{
	GstCaps *caps;
	GstElement *gdppay;
	GstBuffer inbuffer, outbuffer;
	gint length;

	gdppay = setup_gdppay ();

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

	/* no buffer should be pushed yet, waiting for caps */
	fail_unless_equals_int (g_list_length (buffers), 0);

	GST_DEBUG ("first buffer");
	inbuffer = gst_buffer_new_and_alloc (4);
	gst_buffer_memset (inbuffer, 0, 0x00, 4);
	caps = gst_caps_from_string (AUDIO_CAPS_STRING);
	gst_check_setup_events (mysrcpad, gdppay, caps, GST_FORMAT_TIME);

	ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

	/* pushing gives away my reference */
	fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);

	/* we should have four buffers now */
	fail_unless_equals_int (g_list_length (buffers), 4);

	/* first buffer is the stream-start event */
	check_stream_start_buffer (1);

	/* second buffer is the serialized caps */
	check_caps_buffer (1, caps);

	/* third buffer is the serialized new_segment event */
	check_segment_buffer (1);

	/* the fourth buffer is the GDP buffer for our pushed buffer */
	fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
	buffers = g_list_remove (buffers, outbuffer);
	ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
	length = GST_DP_HEADER_LENGTH + 4;
	fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
	gst_buffer_unref (outbuffer);

	/* second buffer */
	GST_DEBUG ("second buffer");
	inbuffer = gst_buffer_new_and_alloc (4);
	gst_buffer_memset (inbuffer, 0, 0x00, 4);

	ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

	/* pushing gives away my reference */
	fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);

	fail_unless_equals_int (g_list_length (buffers), 1);
	fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
	buffers = g_list_remove (buffers, outbuffer);
	ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);

	/* the third output buffer is data */
	length = GST_DP_HEADER_LENGTH + 4;
	fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
	gst_buffer_unref (outbuffer);

	/* a third buffer without caps set explicitly; should work */
	GST_DEBUG ("Creating third buffer, no caps set");
	inbuffer = gst_buffer_new_and_alloc (4);
	gst_buffer_memset (inbuffer, 0, 0x00, 4);

	ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

	/* pushing gives away my reference */
	fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);

	fail_unless_equals_int (g_list_length (buffers), 1);
	fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
	buffers = g_list_remove (buffers, outbuffer);
	ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);

	/* the fourth output buffer is data */
	length = GST_DP_HEADER_LENGTH + 4;
	fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
	gst_buffer_unref (outbuffer);


	fail_unless (gst_element_set_state (gdppay,
	GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS, "could not set to null");

	gst_caps_unref (caps);
	g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
	g_list_free (buffers);
	buffers = NULL;
	ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
	cleanup_gdppay (gdppay);
	}

	GST_END_TEST;

	static GstStaticPadTemplate shsrctemplate = GST_STATIC_PAD_TEMPLATE ("src",
	GST_PAD_SRC,
	GST_PAD_ALWAYS,
	GST_STATIC_CAPS ("application/x-gst-test-streamheader")
	);


	static GstElement *
	setup_gdppay_streamheader (void)
	{
	GstElement *gdppay;

	GST_DEBUG ("setup_gdppay");
	gdppay = gst_check_setup_element ("gdppay");
	myshsrcpad = gst_check_setup_src_pad (gdppay, &shsrctemplate);
	mysinkpad = gst_check_setup_sink_pad (gdppay, &sinktemplate);
	gst_pad_set_active (myshsrcpad, TRUE);
	gst_pad_set_active (mysinkpad, TRUE);

	return gdppay;
	}

	/* this test serializes a stream that already has a streamheader of its own.
	* the streamheader should then be serialized and put on the GDP stream's
	* streamheader */
	GST_START_TEST (test_streamheader)
	{
	GstCaps caps, sinkcaps;
	GstElement *gdppay;
	GstBuffer inbuffer, outbuffer, *shbuffer;
	gchar *caps_string;
	gint length;
	GstStructure *structure;
	GValue array = { 0 };
	GValue value = { 0 };
	const GValue *sh;
	GArray *shbuffers;

	gdppay = setup_gdppay_streamheader ();

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

	/* no buffer should be pushed yet, still waiting for caps */
	fail_unless_equals_int (g_list_length (buffers), 0);

	GST_DEBUG ("first buffer");
	inbuffer = gst_buffer_new_and_alloc (4);
	gst_buffer_fill (inbuffer, 0, "head", 4);
	caps = gst_caps_from_string ("application/x-gst-test-streamheader");
	structure = gst_caps_get_structure (caps, 0);
	GST_BUFFER_FLAG_SET (inbuffer, GST_BUFFER_FLAG_HEADER);
	g_value_init (&array, GST_TYPE_ARRAY);
	g_value_init (&value, GST_TYPE_BUFFER);
	shbuffer = gst_buffer_copy (inbuffer);
	gst_value_set_buffer (&value, shbuffer);
	gst_buffer_unref (shbuffer);
	gst_value_array_append_value (&array, &value);
	g_value_unset (&value);
	gst_structure_set_value (structure, "streamheader", &array);
	g_value_unset (&array);
	caps_string = gst_caps_to_string (caps);

	gst_check_setup_events (myshsrcpad, gdppay, caps, GST_FORMAT_TIME);
	ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

	/* pushing gives away my reference */
	fail_unless (gst_pad_push (myshsrcpad, inbuffer) == GST_FLOW_OK);

	/* we should have four buffers now */
	fail_unless_equals_int (g_list_length (buffers), 4);

	/* our sink pad should now have GDP caps with a streamheader that includes
	* GDP wrappings of our streamheader */
	sinkcaps = gst_pad_get_current_caps (mysinkpad);
	structure = gst_caps_get_structure (sinkcaps, 0);
	fail_unless_equals_string ((gchar *) gst_structure_get_name (structure),
	"application/x-gdp");
	fail_unless (gst_structure_has_field (structure, "streamheader"));
	sh = gst_structure_get_value (structure, "streamheader");
	fail_unless (G_VALUE_TYPE (sh) == GST_TYPE_ARRAY);
	shbuffers = g_value_peek_pointer (sh);
	/* a serialized stream-start-id, a serialized new_segment,
	* a serialized caps, and serialization of our
	* incoming streamheader */
	fail_unless_equals_int (shbuffers->len, 4);

	gst_caps_unref (sinkcaps);

	/* first buffer is the stream-start event */
	check_stream_start_buffer (1);

	/* second buffer is the serialized caps;
	* the element also holds a ref to it */
	check_caps_buffer (1, caps);

	/* third buffer is the serialized new_segment event;
	* the element also holds a ref to it */
	check_segment_buffer (1);

	/* the fourth buffer is the GDP buffer for our pushed buffer */
	fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
	buffers = g_list_remove (buffers, outbuffer);
	ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
	length = GST_DP_HEADER_LENGTH + 4;
	fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
	gst_buffer_unref (outbuffer);

	/* second buffer */
	GST_DEBUG ("second buffer");
	inbuffer = gst_buffer_new_and_alloc (4);
	gst_buffer_memset (inbuffer, 0, 0x02, 4);

	ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

	/* pushing gives away my reference */
	fail_unless (gst_pad_push (myshsrcpad, inbuffer) == GST_FLOW_OK);

	fail_unless_equals_int (g_list_length (buffers), 1);
	fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
	buffers = g_list_remove (buffers, outbuffer);
	ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);

	/* the third output buffer is data */
	length = GST_DP_HEADER_LENGTH + 4;
	fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
	gst_buffer_unref (outbuffer);

	/* a third buffer without caps set explicitly; should work */
	GST_DEBUG ("Creating third buffer, no caps set");
	inbuffer = gst_buffer_new_and_alloc (4);
	gst_buffer_memset (inbuffer, 0, 0x03, 4);

	ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

	/* pushing gives away my reference */
	fail_unless (gst_pad_push (myshsrcpad, inbuffer) == GST_FLOW_OK);

	fail_unless_equals_int (g_list_length (buffers), 1);
	fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
	buffers = g_list_remove (buffers, outbuffer);
	ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);

	/* the fourth output buffer is data */
	length = GST_DP_HEADER_LENGTH + 4;
	fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
	gst_buffer_unref (outbuffer);


	fail_unless (gst_element_set_state (gdppay,
	GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS, "could not set to null");

	gst_caps_unref (caps);
	g_free (caps_string);
	g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
	g_list_free (buffers);
	buffers = NULL;
	ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
	cleanup_gdppay (gdppay);
	}

	GST_END_TEST;


	GST_START_TEST (test_first_no_caps)
	{
	GstElement *gdppay;
	GstBuffer *inbuffer;

	gdppay = setup_gdppay ();

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

	gst_check_setup_events (mysrcpad, gdppay, NULL, GST_FORMAT_TIME);

	GST_DEBUG ("first buffer");
	inbuffer = gst_buffer_new_and_alloc (4);
	gst_buffer_memset (inbuffer, 0, 0x01, 4);
	ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

	/* pushing should trigger an error */
	fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_NOT_NEGOTIATED);

	fail_unless_equals_int (g_list_length (buffers), 0);

	fail_unless (gst_element_set_state (gdppay,
	GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS, "could not set to null");

	g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
	g_list_free (buffers);
	buffers = NULL;
	ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
	cleanup_gdppay (gdppay);
	}

	GST_END_TEST;

	/* element should still work if no new_segment is sent before the first
	* buffer */
	GST_START_TEST (test_first_no_new_segment)
	{
	GstElement *gdppay;
	GstBuffer *inbuffer;
	GstCaps *caps;

	gdppay = setup_gdppay ();

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

	GST_DEBUG ("first buffer");
	inbuffer = gst_buffer_new_and_alloc (4);
	gst_buffer_memset (inbuffer, 0, 0x01, 4);
	caps = gst_caps_from_string (AUDIO_CAPS_STRING);
	gst_check_setup_events (mysrcpad, gdppay, caps, GST_FORMAT_TIME);
	gst_caps_unref (caps);

	ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

	/* pushing gives away my reference */
	fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);

	/* we should have three buffers now;
	* one for the stream-start, one for an "invented" new segment,
	* one for GDP caps, and one with our buffer */
	fail_unless_equals_int (g_list_length (buffers), 4);

	fail_unless (gst_element_set_state (gdppay,
	GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS, "could not set to null");

	g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
	g_list_free (buffers);
	buffers = NULL;
	ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
	cleanup_gdppay (gdppay);
	}

	GST_END_TEST;

	GST_START_TEST (test_crc)
	{
	GstCaps *caps;
	GstElement *gdppay;
	GstBuffer inbuffer, outbuffer;
	gint length;
	GstMapInfo map;
	guint16 crc_calculated, crc_read;

	gdppay = setup_gdppay ();
	g_object_set (gdppay, "crc-header", TRUE, NULL);

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

	/* no buffer should be pushed yet, waiting for caps */
	fail_unless_equals_int (g_list_length (buffers), 0);

	GST_DEBUG ("first buffer");
	inbuffer = gst_buffer_new_and_alloc (4);
	gst_buffer_memset (inbuffer, 0, g_random_int () & 0xff, 4);
	caps = gst_caps_from_string (AUDIO_CAPS_STRING);
	gst_check_setup_events (mysrcpad, gdppay, caps, GST_FORMAT_TIME);

	ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

	/* pushing gives away my reference */
	fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);

	/* we should have four buffers now */
	fail_unless_equals_int (g_list_length (buffers), 4);

	/* first buffer is the stream-start event */
	check_stream_start_buffer (1);

	/* second buffer is the serialized caps;
	* the element also holds a ref to it */
	check_caps_buffer (1, caps);

	/* third buffer is the serialized new_segment event */
	fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
	buffers = g_list_remove (buffers, outbuffer);
	ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);

	/* verify the header checksum */
	/* CRC's start at 58 in the header */
	outbuffer = gst_buffer_make_writable (outbuffer);
	gst_buffer_map (outbuffer, &map, GST_MAP_READWRITE);
	crc_calculated = gst_dp_crc (map.data, 58);
	crc_read = GST_READ_UINT16_BE (map.data + 58);
	fail_unless_equals_int (crc_calculated, crc_read);

	/* change a byte in the header and verify that the checksum now fails */
	map.data[0] = 0xff;
	crc_calculated = gst_dp_crc (map.data, 58);
	fail_if (crc_calculated == crc_read,
	"Introducing a byte error in the header should make the checksum fail");

	gst_buffer_unmap (outbuffer, &map);
	gst_buffer_unref (outbuffer);

	/* the fourth buffer is the GDP buffer for our pushed buffer */
	fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
	buffers = g_list_remove (buffers, outbuffer);
	ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
	length = GST_DP_HEADER_LENGTH + 4;
	fail_unless_equals_int (gst_buffer_get_size (outbuffer), length);
	gst_buffer_unref (outbuffer);

	fail_unless (gst_element_set_state (gdppay,
	GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS, "could not set to null");

	gst_caps_unref (caps);
	g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
	g_list_free (buffers);
	buffers = NULL;
	ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
	cleanup_gdppay (gdppay);
	}

	GST_END_TEST;


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

	suite_add_tcase (s, tc_chain);
	tcase_add_test (tc_chain, test_audio);
	tcase_add_test (tc_chain, test_first_no_caps);
	tcase_add_test (tc_chain, test_first_no_new_segment);
	tcase_add_test (tc_chain, test_streamheader);
	tcase_add_test (tc_chain, test_crc);

	return s;
	}

	GST_CHECK_MAIN (gdppay);