tests/check/elements/vorbistag.c - mtk-gst-plugins-base-debian - Git at Google

 /* GStreamer
  *
  * unit test for vorbisdec
  *
  * Copyright (C) <2005> 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 <unistd.h>
 #include <glib.h>

 #include <vorbis/codec.h>
 #include <vorbis/vorbisenc.h>

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

 /* a valid first header packet */
 static guchar identification_header[30] = {
   1,                            /* packet_type */
   'v', 'o', 'r', 'b', 'i', 's',
   0, 0, 0, 0,                   /* vorbis_version */
   2,                            /* audio_channels */
   0x44, 0xac, 0, 0,             /* sample_rate */
   0xff, 0xff, 0xff, 0xff,       /* bitrate_maximum */
   0x00, 0xee, 0x02, 0x00,       /* bitrate_nominal */
   0xff, 0xff, 0xff, 0xff,       /* bitrate_minimum */
   0xb8,                         /* blocksize_0, blocksize_1 */
   0x01                          /* framing_flag */
 };

 static guchar artist_comment_header[] = {
   3,                            /* packet_type */
   'v', 'o', 'r', 'b', 'i', 's',
   2, 0, 0, 0,                   /* vendor_length */
   'm', 'e',
   1, 0, 0, 0,                   /* user_comment_list_length */
   9, 0, 0, 0,                   /* length comment[0] */
   'A', 'R', 'T', 'I', 'S', 'T', '=', 'm', 'e',
   0x01,                         /* framing bit */
 };

 static guchar title_comment_header[] = {
   3,                            /* packet_type */
   'v', 'o', 'r', 'b', 'i', 's',
   2, 0, 0, 0,                   /* vendor_length */
   'm', 'e',
   1, 0, 0, 0,                   /* user_comment_list_length */
   12, 0, 0, 0,                  /* length comment[0] */
   'T', 'I', 'T', 'L', 'E', '=', 'f', 'o', 'o', 'b', 'a', 'r',
   0x01,                         /* framing bit */
 };

 static guchar empty_comment_header[] = {
   3,                            /* packet_type */
   'v', 'o', 'r', 'b', 'i', 's',
   2, 0, 0, 0,                   /* vendor_length */
   'm', 'e',
   0, 0, 0, 0,                   /* user_comment_list_length */
   0x01,                         /* framing bit */
 };


 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 GstPad *mysrcpad, *mysinkpad;
 static GAsyncQueue *pending_buffers;
 static gulong id;


 static GstElement *
 setup_vorbistag (void)
 {
   GstElement *vorbistag;
   GstCaps *caps;

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

   caps = gst_caps_new_empty_simple ("audio/x-vorbis");
   gst_check_setup_events (mysrcpad, vorbistag, caps, GST_FORMAT_TIME);
   gst_caps_unref (caps);

   gst_pad_set_active (mysinkpad, TRUE);

   return vorbistag;
 }

 static void
 cleanup_vorbistag (GstElement * vorbistag)
 {
   GST_DEBUG ("cleanup_vorbistag");
   gst_element_set_state (vorbistag, GST_STATE_NULL);

   gst_pad_set_active (mysrcpad, FALSE);
   gst_pad_set_active (mysinkpad, FALSE);
   gst_check_drop_buffers ();
   gst_check_teardown_src_pad (vorbistag);
   gst_check_teardown_sink_pad (vorbistag);
   gst_check_teardown_element (vorbistag);
 }


 static GstPadProbeReturn
 buffer_probe (GstPad * pad, GstPadProbeInfo * info, gpointer unused)
 {
   GstBuffer *buffer = GST_PAD_PROBE_INFO_BUFFER (info);

   g_async_queue_push (pending_buffers, gst_buffer_ref (buffer));

   return GST_PAD_PROBE_OK;
 }

 static void
 start_pipeline (GstElement * element)
 {
   id = gst_pad_add_probe (mysinkpad, GST_PAD_PROBE_TYPE_BUFFER,
       (GstPadProbeCallback) buffer_probe, NULL, NULL);

   pending_buffers = g_async_queue_new ();
   gst_element_set_state (element, GST_STATE_PLAYING);
 }

 static GstBuffer *
 get_buffer (void)
 {
   return GST_BUFFER (g_async_queue_pop (pending_buffers));
 }

 static void
 stop_pipeline (GstElement * element)
 {
   GstBuffer *buf;

   while ((buf = g_async_queue_try_pop (pending_buffers)))
     gst_buffer_unref (buf);

   gst_pad_remove_probe (mysinkpad, id);
   id = 0;

   gst_element_set_state (element, GST_STATE_NULL);

   while ((buf = g_async_queue_try_pop (pending_buffers)))
     gst_buffer_unref (buf);

   g_async_queue_unref (pending_buffers);
   pending_buffers = NULL;
 }

 static void
 compare_buffer (GstBuffer * buf, const guint8 * data, gsize size)
 {
   GstMapInfo map;

   gst_buffer_map (buf, &map, GST_MAP_READ);
   fail_unless_equals_int (map.size, size);
   fail_unless_equals_int (memcmp (map.data, data, size), 0);
   gst_buffer_unmap (buf, &map);
 }

 static vorbis_comment vc;
 static vorbis_dsp_state vd;
 static vorbis_info vi;
 static vorbis_block vb;

 static GstBuffer *
 _create_codebook_header_buffer (void)
 {
   GstBuffer *buffer;
   ogg_packet header;
   ogg_packet header_comm;
   ogg_packet header_code;

   vorbis_info_init (&vi);
   vorbis_encode_setup_vbr (&vi, 1, 44000, 0.5);
   vorbis_encode_setup_init (&vi);
   vorbis_analysis_init (&vd, &vi);
   vorbis_block_init (&vd, &vb);
   vorbis_comment_init (&vc);
   vorbis_analysis_headerout (&vd, &vc, &header, &header_comm, &header_code);

   buffer = gst_buffer_new_and_alloc (header_code.bytes);
   gst_buffer_fill (buffer, 0, header_code.packet, header_code.bytes);

   return buffer;
 }

 static GstBuffer *
 _create_audio_buffer (void)
 {
   GstBuffer *buffer;
   ogg_packet packet;
   float **vorbis_buffer G_GNUC_UNUSED;

   vorbis_buffer = vorbis_analysis_buffer (&vd, 0);
   vorbis_analysis_wrote (&vd, 0);
   vorbis_analysis_blockout (&vd, &vb);
   vorbis_analysis (&vb, NULL);
   vorbis_bitrate_addblock (&vb);
   vorbis_bitrate_flushpacket (&vd, &packet);
   buffer = gst_buffer_new_and_alloc (packet.bytes);
   gst_buffer_fill (buffer, 0, packet.packet, packet.bytes);
   GST_DEBUG ("%p %ld", packet.packet, packet.bytes);

   vorbis_comment_clear (&vc);
   vorbis_block_clear (&vb);
   vorbis_dsp_clear (&vd);
   vorbis_info_clear (&vi);

   return buffer;
 }


 GST_START_TEST (test_empty_tags_set)
 {
   GstTagList *tags;
   GstElement *vorbistag;
   GstBuffer *inbuffer, *outbuffer;

   vorbistag = setup_vorbistag ();

   tags = gst_tag_list_new_empty ();
   gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_TITLE, "foobar", NULL);
   gst_tag_setter_merge_tags (GST_TAG_SETTER (vorbistag), tags,
       GST_TAG_MERGE_REPLACE);
   gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (vorbistag),
       GST_TAG_MERGE_KEEP_ALL);
   gst_tag_list_unref (tags);

   start_pipeline (vorbistag);

   /* send identification header */
   inbuffer = gst_buffer_new_and_alloc (sizeof (identification_header));
   gst_buffer_fill (inbuffer, 0, identification_header,
       sizeof (identification_header));
   fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);

   /* send empty comment buffer */
   inbuffer = gst_buffer_new_and_alloc (sizeof (empty_comment_header));
   gst_buffer_fill (inbuffer, 0, empty_comment_header,
       sizeof (empty_comment_header));
   fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);

   /* send minimal codebook header and audio packers */
   inbuffer = _create_codebook_header_buffer ();
   fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);
   inbuffer = _create_audio_buffer ();
   fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);


   /* check identification header is unchanged */
   outbuffer = get_buffer ();
   compare_buffer (outbuffer, identification_header,
       sizeof (identification_header));
   gst_buffer_unref (outbuffer);

   /* check comment header is correct */
   outbuffer = get_buffer ();
   compare_buffer (outbuffer, title_comment_header,
       sizeof (title_comment_header));
   gst_buffer_unref (outbuffer);

   stop_pipeline (vorbistag);
   cleanup_vorbistag (vorbistag);
 }

 GST_END_TEST;


 GST_START_TEST (test_filled_tags_unset)
 {
   GstTagList *tags;
   GstElement *vorbistag;
   GstBuffer *inbuffer, *outbuffer;

   vorbistag = setup_vorbistag ();

   tags = gst_tag_list_new_empty ();
   gst_tag_setter_merge_tags (GST_TAG_SETTER (vorbistag), tags,
       GST_TAG_MERGE_REPLACE);
   gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (vorbistag),
       GST_TAG_MERGE_KEEP_ALL);
   gst_tag_list_unref (tags);

   start_pipeline (vorbistag);

   /* send identification header */
   inbuffer = gst_buffer_new_and_alloc (sizeof (identification_header));
   gst_buffer_fill (inbuffer, 0, identification_header,
       sizeof (identification_header));
   fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);

   /* send empty comment buffer */
   inbuffer = gst_buffer_new_and_alloc (sizeof (title_comment_header));
   gst_buffer_fill (inbuffer, 0, title_comment_header,
       sizeof (title_comment_header));
   fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);

   /* send minimal codebook header and audio packers */
   inbuffer = _create_codebook_header_buffer ();
   fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);
   inbuffer = _create_audio_buffer ();
   fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);


   /* check identification header is unchanged */
   outbuffer = get_buffer ();
   compare_buffer (outbuffer, identification_header,
       sizeof (identification_header));
   gst_buffer_unref (outbuffer);

   /* check comment header is correct */
   outbuffer = get_buffer ();
   compare_buffer (outbuffer, empty_comment_header,
       sizeof (empty_comment_header));
   gst_buffer_unref (outbuffer);

   stop_pipeline (vorbistag);
   cleanup_vorbistag (vorbistag);
 }

 GST_END_TEST;


 GST_START_TEST (test_filled_tags_change)
 {
   GstTagList *tags;
   GstElement *vorbistag;
   GstBuffer *inbuffer, *outbuffer;

   vorbistag = setup_vorbistag ();

   tags = gst_tag_list_new_empty ();
   gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_TITLE, "foobar", NULL);
   gst_tag_setter_merge_tags (GST_TAG_SETTER (vorbistag), tags,
       GST_TAG_MERGE_REPLACE);
   gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (vorbistag),
       GST_TAG_MERGE_KEEP_ALL);
   gst_tag_list_unref (tags);

   start_pipeline (vorbistag);

   /* send identification header */
   inbuffer = gst_buffer_new_and_alloc (sizeof (identification_header));
   gst_buffer_fill (inbuffer, 0, identification_header,
       sizeof (identification_header));
   fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);

   /* send empty comment buffer */
   inbuffer = gst_buffer_new_and_alloc (sizeof (artist_comment_header));
   gst_buffer_fill (inbuffer, 0, artist_comment_header,
       sizeof (artist_comment_header));
   fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);

   /* send minimal codebook header and audio packers */
   inbuffer = _create_codebook_header_buffer ();
   fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);
   inbuffer = _create_audio_buffer ();
   fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);


   /* check identification header is unchanged */
   outbuffer = get_buffer ();
   compare_buffer (outbuffer, identification_header,
       sizeof (identification_header));
   gst_buffer_unref (outbuffer);

   /* check comment header is correct */
   outbuffer = get_buffer ();
   compare_buffer (outbuffer, title_comment_header,
       sizeof (title_comment_header));
   gst_buffer_unref (outbuffer);

   stop_pipeline (vorbistag);
   cleanup_vorbistag (vorbistag);
 }

 GST_END_TEST;


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

   suite_add_tcase (s, tc_chain);
   tcase_add_test (tc_chain, test_empty_tags_set);
   tcase_add_test (tc_chain, test_filled_tags_unset);
   tcase_add_test (tc_chain, test_filled_tags_change);

   return s;
 }

 GST_CHECK_MAIN (vorbistag)
	/* GStreamer
	*
	* unit test for vorbisdec
	*
	* Copyright (C) <2005> 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 <unistd.h>
	#include <glib.h>

	#include <vorbis/codec.h>
	#include <vorbis/vorbisenc.h>

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

	/* a valid first header packet */
	static guchar identification_header[30] = {
	1, /* packet_type */
	'v', 'o', 'r', 'b', 'i', 's',
	0, 0, 0, 0, /* vorbis_version */
	2, /* audio_channels */
	0x44, 0xac, 0, 0, /* sample_rate */
	0xff, 0xff, 0xff, 0xff, /* bitrate_maximum */
	0x00, 0xee, 0x02, 0x00, /* bitrate_nominal */
	0xff, 0xff, 0xff, 0xff, /* bitrate_minimum */
	0xb8, /* blocksize_0, blocksize_1 */
	0x01 /* framing_flag */
	};

	static guchar artist_comment_header[] = {
	3, /* packet_type */
	'v', 'o', 'r', 'b', 'i', 's',
	2, 0, 0, 0, /* vendor_length */
	'm', 'e',
	1, 0, 0, 0, /* user_comment_list_length */
	9, 0, 0, 0, /* length comment[0] */
	'A', 'R', 'T', 'I', 'S', 'T', '=', 'm', 'e',
	0x01, /* framing bit */
	};

	static guchar title_comment_header[] = {
	3, /* packet_type */
	'v', 'o', 'r', 'b', 'i', 's',
	2, 0, 0, 0, /* vendor_length */
	'm', 'e',
	1, 0, 0, 0, /* user_comment_list_length */
	12, 0, 0, 0, /* length comment[0] */
	'T', 'I', 'T', 'L', 'E', '=', 'f', 'o', 'o', 'b', 'a', 'r',
	0x01, /* framing bit */
	};

	static guchar empty_comment_header[] = {
	3, /* packet_type */
	'v', 'o', 'r', 'b', 'i', 's',
	2, 0, 0, 0, /* vendor_length */
	'm', 'e',
	0, 0, 0, 0, /* user_comment_list_length */
	0x01, /* framing bit */
	};


	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 GstPad mysrcpad, mysinkpad;
	static GAsyncQueue *pending_buffers;
	static gulong id;


	static GstElement *
	setup_vorbistag (void)
	{
	GstElement *vorbistag;
	GstCaps *caps;

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

	caps = gst_caps_new_empty_simple ("audio/x-vorbis");
	gst_check_setup_events (mysrcpad, vorbistag, caps, GST_FORMAT_TIME);
	gst_caps_unref (caps);

	gst_pad_set_active (mysinkpad, TRUE);

	return vorbistag;
	}

	static void
	cleanup_vorbistag (GstElement * vorbistag)
	{
	GST_DEBUG ("cleanup_vorbistag");
	gst_element_set_state (vorbistag, GST_STATE_NULL);

	gst_pad_set_active (mysrcpad, FALSE);
	gst_pad_set_active (mysinkpad, FALSE);
	gst_check_drop_buffers ();
	gst_check_teardown_src_pad (vorbistag);
	gst_check_teardown_sink_pad (vorbistag);
	gst_check_teardown_element (vorbistag);
	}


	static GstPadProbeReturn
	buffer_probe (GstPad * pad, GstPadProbeInfo * info, gpointer unused)
	{
	GstBuffer *buffer = GST_PAD_PROBE_INFO_BUFFER (info);

	g_async_queue_push (pending_buffers, gst_buffer_ref (buffer));

	return GST_PAD_PROBE_OK;
	}

	static void
	start_pipeline (GstElement * element)
	{
	id = gst_pad_add_probe (mysinkpad, GST_PAD_PROBE_TYPE_BUFFER,
	(GstPadProbeCallback) buffer_probe, NULL, NULL);

	pending_buffers = g_async_queue_new ();
	gst_element_set_state (element, GST_STATE_PLAYING);
	}

	static GstBuffer *
	get_buffer (void)
	{
	return GST_BUFFER (g_async_queue_pop (pending_buffers));
	}

	static void
	stop_pipeline (GstElement * element)
	{
	GstBuffer *buf;

	while ((buf = g_async_queue_try_pop (pending_buffers)))
	gst_buffer_unref (buf);

	gst_pad_remove_probe (mysinkpad, id);
	id = 0;

	gst_element_set_state (element, GST_STATE_NULL);

	while ((buf = g_async_queue_try_pop (pending_buffers)))
	gst_buffer_unref (buf);

	g_async_queue_unref (pending_buffers);
	pending_buffers = NULL;
	}

	static void
	compare_buffer (GstBuffer * buf, const guint8 * data, gsize size)
	{
	GstMapInfo map;

	gst_buffer_map (buf, &map, GST_MAP_READ);
	fail_unless_equals_int (map.size, size);
	fail_unless_equals_int (memcmp (map.data, data, size), 0);
	gst_buffer_unmap (buf, &map);
	}

	static vorbis_comment vc;
	static vorbis_dsp_state vd;
	static vorbis_info vi;
	static vorbis_block vb;

	static GstBuffer *
	_create_codebook_header_buffer (void)
	{
	GstBuffer *buffer;
	ogg_packet header;
	ogg_packet header_comm;
	ogg_packet header_code;

	vorbis_info_init (&vi);
	vorbis_encode_setup_vbr (&vi, 1, 44000, 0.5);
	vorbis_encode_setup_init (&vi);
	vorbis_analysis_init (&vd, &vi);
	vorbis_block_init (&vd, &vb);
	vorbis_comment_init (&vc);
	vorbis_analysis_headerout (&vd, &vc, &header, &header_comm, &header_code);

	buffer = gst_buffer_new_and_alloc (header_code.bytes);
	gst_buffer_fill (buffer, 0, header_code.packet, header_code.bytes);

	return buffer;
	}

	static GstBuffer *
	_create_audio_buffer (void)
	{
	GstBuffer *buffer;
	ogg_packet packet;
	float **vorbis_buffer G_GNUC_UNUSED;

	vorbis_buffer = vorbis_analysis_buffer (&vd, 0);
	vorbis_analysis_wrote (&vd, 0);
	vorbis_analysis_blockout (&vd, &vb);
	vorbis_analysis (&vb, NULL);
	vorbis_bitrate_addblock (&vb);
	vorbis_bitrate_flushpacket (&vd, &packet);
	buffer = gst_buffer_new_and_alloc (packet.bytes);
	gst_buffer_fill (buffer, 0, packet.packet, packet.bytes);
	GST_DEBUG ("%p %ld", packet.packet, packet.bytes);

	vorbis_comment_clear (&vc);
	vorbis_block_clear (&vb);
	vorbis_dsp_clear (&vd);
	vorbis_info_clear (&vi);

	return buffer;
	}


	GST_START_TEST (test_empty_tags_set)
	{
	GstTagList *tags;
	GstElement *vorbistag;
	GstBuffer inbuffer, outbuffer;

	vorbistag = setup_vorbistag ();

	tags = gst_tag_list_new_empty ();
	gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_TITLE, "foobar", NULL);
	gst_tag_setter_merge_tags (GST_TAG_SETTER (vorbistag), tags,
	GST_TAG_MERGE_REPLACE);
	gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (vorbistag),
	GST_TAG_MERGE_KEEP_ALL);
	gst_tag_list_unref (tags);

	start_pipeline (vorbistag);

	/* send identification header */
	inbuffer = gst_buffer_new_and_alloc (sizeof (identification_header));
	gst_buffer_fill (inbuffer, 0, identification_header,
	sizeof (identification_header));
	fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);

	/* send empty comment buffer */
	inbuffer = gst_buffer_new_and_alloc (sizeof (empty_comment_header));
	gst_buffer_fill (inbuffer, 0, empty_comment_header,
	sizeof (empty_comment_header));
	fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);

	/* send minimal codebook header and audio packers */
	inbuffer = _create_codebook_header_buffer ();
	fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);
	inbuffer = _create_audio_buffer ();
	fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);


	/* check identification header is unchanged */
	outbuffer = get_buffer ();
	compare_buffer (outbuffer, identification_header,
	sizeof (identification_header));
	gst_buffer_unref (outbuffer);

	/* check comment header is correct */
	outbuffer = get_buffer ();
	compare_buffer (outbuffer, title_comment_header,
	sizeof (title_comment_header));
	gst_buffer_unref (outbuffer);

	stop_pipeline (vorbistag);
	cleanup_vorbistag (vorbistag);
	}

	GST_END_TEST;


	GST_START_TEST (test_filled_tags_unset)
	{
	GstTagList *tags;
	GstElement *vorbistag;
	GstBuffer inbuffer, outbuffer;

	vorbistag = setup_vorbistag ();

	tags = gst_tag_list_new_empty ();
	gst_tag_setter_merge_tags (GST_TAG_SETTER (vorbistag), tags,
	GST_TAG_MERGE_REPLACE);
	gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (vorbistag),
	GST_TAG_MERGE_KEEP_ALL);
	gst_tag_list_unref (tags);

	start_pipeline (vorbistag);

	/* send identification header */
	inbuffer = gst_buffer_new_and_alloc (sizeof (identification_header));
	gst_buffer_fill (inbuffer, 0, identification_header,
	sizeof (identification_header));
	fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);

	/* send empty comment buffer */
	inbuffer = gst_buffer_new_and_alloc (sizeof (title_comment_header));
	gst_buffer_fill (inbuffer, 0, title_comment_header,
	sizeof (title_comment_header));
	fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);

	/* send minimal codebook header and audio packers */
	inbuffer = _create_codebook_header_buffer ();
	fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);
	inbuffer = _create_audio_buffer ();
	fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);


	/* check identification header is unchanged */
	outbuffer = get_buffer ();
	compare_buffer (outbuffer, identification_header,
	sizeof (identification_header));
	gst_buffer_unref (outbuffer);

	/* check comment header is correct */
	outbuffer = get_buffer ();
	compare_buffer (outbuffer, empty_comment_header,
	sizeof (empty_comment_header));
	gst_buffer_unref (outbuffer);

	stop_pipeline (vorbistag);
	cleanup_vorbistag (vorbistag);
	}

	GST_END_TEST;


	GST_START_TEST (test_filled_tags_change)
	{
	GstTagList *tags;
	GstElement *vorbistag;
	GstBuffer inbuffer, outbuffer;

	vorbistag = setup_vorbistag ();

	tags = gst_tag_list_new_empty ();
	gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_TITLE, "foobar", NULL);
	gst_tag_setter_merge_tags (GST_TAG_SETTER (vorbistag), tags,
	GST_TAG_MERGE_REPLACE);
	gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (vorbistag),
	GST_TAG_MERGE_KEEP_ALL);
	gst_tag_list_unref (tags);

	start_pipeline (vorbistag);

	/* send identification header */
	inbuffer = gst_buffer_new_and_alloc (sizeof (identification_header));
	gst_buffer_fill (inbuffer, 0, identification_header,
	sizeof (identification_header));
	fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);

	/* send empty comment buffer */
	inbuffer = gst_buffer_new_and_alloc (sizeof (artist_comment_header));
	gst_buffer_fill (inbuffer, 0, artist_comment_header,
	sizeof (artist_comment_header));
	fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);

	/* send minimal codebook header and audio packers */
	inbuffer = _create_codebook_header_buffer ();
	fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);
	inbuffer = _create_audio_buffer ();
	fail_unless_equals_int (gst_pad_push (mysrcpad, inbuffer), GST_FLOW_OK);


	/* check identification header is unchanged */
	outbuffer = get_buffer ();
	compare_buffer (outbuffer, identification_header,
	sizeof (identification_header));
	gst_buffer_unref (outbuffer);

	/* check comment header is correct */
	outbuffer = get_buffer ();
	compare_buffer (outbuffer, title_comment_header,
	sizeof (title_comment_header));
	gst_buffer_unref (outbuffer);

	stop_pipeline (vorbistag);
	cleanup_vorbistag (vorbistag);
	}

	GST_END_TEST;



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

	suite_add_tcase (s, tc_chain);
	tcase_add_test (tc_chain, test_empty_tags_set);
	tcase_add_test (tc_chain, test_filled_tags_unset);
	tcase_add_test (tc_chain, test_filled_tags_change);

	return s;
	}

	GST_CHECK_MAIN (vorbistag)