diff -r 000000000000 -r 0e761a78d257 gst_plugins_base/tests/check/libs/audio.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gst_plugins_base/tests/check/libs/audio.c	Thu Dec 17 08:53:32 2009 +0200
@@ -0,0 +1,545 @@
+/* GStreamer
+ *
+ * unit tests for audio support library
+ *
+ * Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/check/gstcheck.h>
+
+#include <gst/audio/audio.h>
+#include <gst/audio/multichannel.h>
+#include <string.h>
+
+static gboolean
+structure_contains_channel_positions (const GstStructure * s)
+{
+  return (gst_structure_get_value (s, "channel-positions") != NULL);
+}
+
+#if 0
+static gboolean
+fixed_caps_have_channel_positions (const GstCaps * caps)
+{
+  GstStructure *s;
+
+  fail_unless (caps != NULL);
+
+  s = gst_caps_get_structure (caps, 0);
+  fail_unless (s != NULL);
+
+  return structure_contains_channel_positions (s);
+}
+#endif
+
+GST_START_TEST (test_multichannel_checks)
+{
+  GstAudioChannelPosition pos_2_mixed[2] = {
+    GST_AUDIO_CHANNEL_POSITION_FRONT_MONO,
+    GST_AUDIO_CHANNEL_POSITION_NONE
+  };
+  GstAudioChannelPosition pos_2_none[2] = {
+    GST_AUDIO_CHANNEL_POSITION_NONE,
+    GST_AUDIO_CHANNEL_POSITION_NONE
+  };
+  GstAudioChannelPosition pos_2_flr[2] = {
+    GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+    GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT
+  };
+  GstAudioChannelPosition pos_2_frr[2] = {
+    GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
+    GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT
+  };
+  GstStructure *s;
+
+  s = gst_structure_new ("audio/x-raw-int", "channels", G_TYPE_INT, 2, NULL);
+
+  /* this should not work and issue a warning: FRONT_MONO + NONE */
+  _gst_check_expecting_log = TRUE;
+  gst_audio_set_channel_positions (s, pos_2_mixed);
+  _gst_check_expecting_log = FALSE;
+  fail_if (structure_contains_channel_positions (s));
+
+  /* this should work: NONE + NONE */
+  gst_audio_set_channel_positions (s, pos_2_none);
+  fail_unless (structure_contains_channel_positions (s));
+  gst_structure_remove_field (s, "channel-positions");
+
+  /* this should also work: FRONT_LEFT + FRONT_RIGHT */
+  gst_audio_set_channel_positions (s, pos_2_flr);
+  fail_unless (structure_contains_channel_positions (s));
+  gst_structure_remove_field (s, "channel-positions");
+
+  /* this should not work and issue a warning: FRONT_RIGHT twice */
+  _gst_check_expecting_log = TRUE;
+  gst_audio_set_channel_positions (s, pos_2_frr);
+  _gst_check_expecting_log = FALSE;
+
+/* FIXME: did I misunderstand _set_structure_channel_positions_list? */
+#if  0
+  /* this should not work and issue a warning: FRONT_RIGHT twice */
+  _gst_check_expecting_log = TRUE;
+  gst_audio_set_structure_channel_positions_list (s, pos_2_frr, 2);
+  _gst_check_expecting_log = FALSE;
+
+  /* this should not work and issue a warning: FRONT_MONO + NONE */
+  _gst_check_expecting_log = TRUE;
+  gst_audio_set_structure_channel_positions_list (s, pos_2_mixed, 2);
+  _gst_check_expecting_log = FALSE;
+
+  /* this should not work either (channel count mismatch) */
+  _gst_check_expecting_log = TRUE;
+  gst_audio_set_structure_channel_positions_list (s, pos_2_none, 44);
+  _gst_check_expecting_log = FALSE;
+  fail_if (structure_contains_channel_positions (s));
+#endif
+
+  gst_structure_free (s);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_buffer_clipping_time)
+{
+  GstSegment s;
+  GstBuffer *buf;
+  GstBuffer *ret;
+  guint8 *data;
+
+  /* Clip start and end */
+  buf = gst_buffer_new ();
+  data = (guint8 *) g_malloc (1000);
+  GST_BUFFER_SIZE (buf) = 1000;
+  GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
+
+  gst_segment_init (&s, GST_FORMAT_TIME);
+  gst_segment_set_newsegment (&s, FALSE, 1.0, GST_FORMAT_TIME, 4 * GST_SECOND,
+      8 * GST_SECOND, 4 * GST_SECOND);
+
+  GST_BUFFER_TIMESTAMP (buf) = 2 * GST_SECOND;
+  GST_BUFFER_DURATION (buf) = 10 * GST_SECOND;
+  GST_BUFFER_OFFSET (buf) = 200;
+  GST_BUFFER_OFFSET_END (buf) = 1200;
+
+  ret = gst_audio_buffer_clip (buf, &s, 100, 1);
+  fail_unless (ret != NULL);
+
+  fail_unless (GST_BUFFER_TIMESTAMP (ret) == 4 * GST_SECOND);
+  fail_unless (GST_BUFFER_DURATION (ret) == 4 * GST_SECOND);
+  fail_unless (GST_BUFFER_OFFSET (ret) == 400);
+  fail_unless (GST_BUFFER_OFFSET_END (ret) == 800);
+  fail_unless (GST_BUFFER_DATA (ret) == data + 200);
+  fail_unless (GST_BUFFER_SIZE (ret) == 400);
+
+  gst_buffer_unref (ret);
+
+  /* Clip only start */
+  buf = gst_buffer_new ();
+  data = (guint8 *) g_malloc (1000);
+  GST_BUFFER_SIZE (buf) = 1000;
+  GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
+
+  gst_segment_init (&s, GST_FORMAT_TIME);
+  gst_segment_set_newsegment (&s, FALSE, 1.0, GST_FORMAT_TIME, 4 * GST_SECOND,
+      12 * GST_SECOND, 4 * GST_SECOND);
+
+  GST_BUFFER_TIMESTAMP (buf) = 2 * GST_SECOND;
+  GST_BUFFER_DURATION (buf) = 10 * GST_SECOND;
+  GST_BUFFER_OFFSET (buf) = 200;
+  GST_BUFFER_OFFSET_END (buf) = 1200;
+
+  ret = gst_audio_buffer_clip (buf, &s, 100, 1);
+  fail_unless (ret != NULL);
+
+  fail_unless (GST_BUFFER_TIMESTAMP (ret) == 4 * GST_SECOND);
+  fail_unless (GST_BUFFER_DURATION (ret) == 8 * GST_SECOND);
+  fail_unless (GST_BUFFER_OFFSET (ret) == 400);
+  fail_unless (GST_BUFFER_OFFSET_END (ret) == 1200);
+  fail_unless (GST_BUFFER_DATA (ret) == data + 200);
+  fail_unless (GST_BUFFER_SIZE (ret) == 800);
+
+  gst_buffer_unref (ret);
+
+  /* Clip only stop */
+  buf = gst_buffer_new ();
+  data = (guint8 *) g_malloc (1000);
+  GST_BUFFER_SIZE (buf) = 1000;
+  GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
+
+  gst_segment_init (&s, GST_FORMAT_TIME);
+  gst_segment_set_newsegment (&s, FALSE, 1.0, GST_FORMAT_TIME, 2 * GST_SECOND,
+      10 * GST_SECOND, 2 * GST_SECOND);
+
+  GST_BUFFER_TIMESTAMP (buf) = 2 * GST_SECOND;
+  GST_BUFFER_DURATION (buf) = 10 * GST_SECOND;
+  GST_BUFFER_OFFSET (buf) = 200;
+  GST_BUFFER_OFFSET_END (buf) = 1200;
+
+  ret = gst_audio_buffer_clip (buf, &s, 100, 1);
+  fail_unless (ret != NULL);
+
+  fail_unless (GST_BUFFER_TIMESTAMP (ret) == 2 * GST_SECOND);
+  fail_unless (GST_BUFFER_DURATION (ret) == 8 * GST_SECOND);
+  fail_unless (GST_BUFFER_OFFSET (ret) == 200);
+  fail_unless (GST_BUFFER_OFFSET_END (ret) == 1000);
+  fail_unless (GST_BUFFER_DATA (ret) == data);
+  fail_unless (GST_BUFFER_SIZE (ret) == 800);
+
+  gst_buffer_unref (ret);
+
+  /* Buffer outside segment */
+  buf = gst_buffer_new ();
+  data = (guint8 *) g_malloc (1000);
+  GST_BUFFER_SIZE (buf) = 1000;
+  GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
+
+  gst_segment_init (&s, GST_FORMAT_TIME);
+  gst_segment_set_newsegment (&s, FALSE, 1.0, GST_FORMAT_TIME, 12 * GST_SECOND,
+      20 * GST_SECOND, 12 * GST_SECOND);
+
+  GST_BUFFER_TIMESTAMP (buf) = 2 * GST_SECOND;
+  GST_BUFFER_DURATION (buf) = 10 * GST_SECOND;
+  GST_BUFFER_OFFSET (buf) = 200;
+  GST_BUFFER_OFFSET_END (buf) = 1200;
+
+  ret = gst_audio_buffer_clip (buf, &s, 100, 1);
+  fail_unless (ret == NULL);
+
+  /* Clip start and end but don't touch duration and offset_end */
+  buf = gst_buffer_new ();
+  data = (guint8 *) g_malloc (1000);
+  GST_BUFFER_SIZE (buf) = 1000;
+  GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
+
+  gst_segment_init (&s, GST_FORMAT_TIME);
+  gst_segment_set_newsegment (&s, FALSE, 1.0, GST_FORMAT_TIME, 4 * GST_SECOND,
+      8 * GST_SECOND, 4 * GST_SECOND);
+
+  GST_BUFFER_TIMESTAMP (buf) = 2 * GST_SECOND;
+  GST_BUFFER_DURATION (buf) = GST_CLOCK_TIME_NONE;
+  GST_BUFFER_OFFSET (buf) = 200;
+  GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
+
+  ret = gst_audio_buffer_clip (buf, &s, 100, 1);
+  fail_unless (ret != NULL);
+
+  fail_unless (GST_BUFFER_TIMESTAMP (ret) == 4 * GST_SECOND);
+  fail_unless (GST_BUFFER_DURATION (ret) == GST_CLOCK_TIME_NONE);
+  fail_unless (GST_BUFFER_OFFSET (ret) == 400);
+  fail_unless (GST_BUFFER_OFFSET_END (ret) == GST_BUFFER_OFFSET_NONE);
+  fail_unless (GST_BUFFER_DATA (ret) == data + 200);
+  fail_unless (GST_BUFFER_SIZE (ret) == 400);
+
+  gst_buffer_unref (ret);
+
+  /* If the buffer has no timestamp it should assert()
+   * FIXME: check if return value is the same as the input buffer.
+   *        probably can't be done because the assert() does a SIGABRT.
+   */
+  buf = gst_buffer_new ();
+  data = (guint8 *) g_malloc (1000);
+  GST_BUFFER_SIZE (buf) = 1000;
+  GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
+
+  gst_segment_init (&s, GST_FORMAT_TIME);
+  gst_segment_set_newsegment (&s, FALSE, 1.0, GST_FORMAT_TIME, 0 * GST_SECOND,
+      10 * GST_SECOND, 0 * GST_SECOND);
+
+  GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE;
+  GST_BUFFER_DURATION (buf) = GST_CLOCK_TIME_NONE;
+  GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
+  GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
+
+  ret = gst_audio_buffer_clip (buf, &s, 100, 1);
+  fail_unless (ret == buf);
+
+  gst_buffer_unref (buf);
+
+  /* If the format is not TIME or DEFAULT it should assert()
+   * FIXME: check if return value is the same as the input buffer.
+   *        probably can't be done because the assert() does a SIGABRT.
+   */
+  buf = gst_buffer_new ();
+  data = (guint8 *) g_malloc (1000);
+  GST_BUFFER_SIZE (buf) = 1000;
+  GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
+
+  gst_segment_init (&s, GST_FORMAT_PERCENT);
+  gst_segment_set_newsegment (&s, FALSE, 1.0, GST_FORMAT_PERCENT, 0, 10, 0);
+
+  GST_BUFFER_TIMESTAMP (buf) = 0 * GST_SECOND;
+  GST_BUFFER_DURATION (buf) = 0;
+  GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
+  GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
+
+  ASSERT_CRITICAL (ret = gst_audio_buffer_clip (buf, &s, 100, 1));
+
+  gst_buffer_unref (buf);
+
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_buffer_clipping_samples)
+{
+  GstSegment s;
+  GstBuffer *buf;
+  GstBuffer *ret;
+  guint8 *data;
+
+  /* Clip start and end */
+  buf = gst_buffer_new ();
+  data = (guint8 *) g_malloc (1000);
+  GST_BUFFER_SIZE (buf) = 1000;
+  GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
+
+  gst_segment_init (&s, GST_FORMAT_DEFAULT);
+  gst_segment_set_newsegment (&s, FALSE, 1.0, GST_FORMAT_DEFAULT, 400,
+      800, 400);
+
+  GST_BUFFER_TIMESTAMP (buf) = 2 * GST_SECOND;
+  GST_BUFFER_DURATION (buf) = 10 * GST_SECOND;
+  GST_BUFFER_OFFSET (buf) = 200;
+  GST_BUFFER_OFFSET_END (buf) = 1200;
+
+  ret = gst_audio_buffer_clip (buf, &s, 100, 1);
+  fail_unless (ret != NULL);
+
+  fail_unless (GST_BUFFER_TIMESTAMP (ret) == 4 * GST_SECOND);
+  fail_unless (GST_BUFFER_DURATION (ret) == 4 * GST_SECOND);
+  fail_unless (GST_BUFFER_OFFSET (ret) == 400);
+  fail_unless (GST_BUFFER_OFFSET_END (ret) == 800);
+  fail_unless (GST_BUFFER_DATA (ret) == data + 200);
+  fail_unless (GST_BUFFER_SIZE (ret) == 400);
+
+  gst_buffer_unref (ret);
+
+  /* Clip only start */
+  buf = gst_buffer_new ();
+  data = (guint8 *) g_malloc (1000);
+  GST_BUFFER_SIZE (buf) = 1000;
+  GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
+
+  gst_segment_init (&s, GST_FORMAT_DEFAULT);
+  gst_segment_set_newsegment (&s, FALSE, 1.0, GST_FORMAT_DEFAULT, 400,
+      1200, 400);
+
+  GST_BUFFER_TIMESTAMP (buf) = 2 * GST_SECOND;
+  GST_BUFFER_DURATION (buf) = 10 * GST_SECOND;
+  GST_BUFFER_OFFSET (buf) = 200;
+  GST_BUFFER_OFFSET_END (buf) = 1200;
+
+  ret = gst_audio_buffer_clip (buf, &s, 100, 1);
+  fail_unless (ret != NULL);
+
+  fail_unless (GST_BUFFER_TIMESTAMP (ret) == 4 * GST_SECOND);
+  fail_unless (GST_BUFFER_DURATION (ret) == 8 * GST_SECOND);
+  fail_unless (GST_BUFFER_OFFSET (ret) == 400);
+  fail_unless (GST_BUFFER_OFFSET_END (ret) == 1200);
+  fail_unless (GST_BUFFER_DATA (ret) == data + 200);
+  fail_unless (GST_BUFFER_SIZE (ret) == 800);
+
+  gst_buffer_unref (ret);
+
+  /* Clip only stop */
+  buf = gst_buffer_new ();
+  data = (guint8 *) g_malloc (1000);
+  GST_BUFFER_SIZE (buf) = 1000;
+  GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
+
+  gst_segment_init (&s, GST_FORMAT_DEFAULT);
+  gst_segment_set_newsegment (&s, FALSE, 1.0, GST_FORMAT_DEFAULT, 200,
+      1000, 200);
+
+  GST_BUFFER_TIMESTAMP (buf) = 2 * GST_SECOND;
+  GST_BUFFER_DURATION (buf) = 10 * GST_SECOND;
+  GST_BUFFER_OFFSET (buf) = 200;
+  GST_BUFFER_OFFSET_END (buf) = 1200;
+
+  ret = gst_audio_buffer_clip (buf, &s, 100, 1);
+  fail_unless (ret != NULL);
+
+  fail_unless (GST_BUFFER_TIMESTAMP (ret) == 2 * GST_SECOND);
+  fail_unless (GST_BUFFER_DURATION (ret) == 8 * GST_SECOND);
+  fail_unless (GST_BUFFER_OFFSET (ret) == 200);
+  fail_unless (GST_BUFFER_OFFSET_END (ret) == 1000);
+  fail_unless (GST_BUFFER_DATA (ret) == data);
+  fail_unless (GST_BUFFER_SIZE (ret) == 800);
+
+  gst_buffer_unref (ret);
+
+  /* Buffer outside segment */
+  buf = gst_buffer_new ();
+  data = (guint8 *) g_malloc (1000);
+  GST_BUFFER_SIZE (buf) = 1000;
+  GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
+
+  gst_segment_init (&s, GST_FORMAT_DEFAULT);
+  gst_segment_set_newsegment (&s, FALSE, 1.0, GST_FORMAT_DEFAULT, 1200,
+      2000, 1200);
+
+  GST_BUFFER_TIMESTAMP (buf) = 2 * GST_SECOND;
+  GST_BUFFER_DURATION (buf) = 10 * GST_SECOND;
+  GST_BUFFER_OFFSET (buf) = 200;
+  GST_BUFFER_OFFSET_END (buf) = 1200;
+
+  ret = gst_audio_buffer_clip (buf, &s, 100, 1);
+  fail_unless (ret == NULL);
+
+  /* Clip start and end but don't touch duration and offset_end */
+  buf = gst_buffer_new ();
+  data = (guint8 *) g_malloc (1000);
+  GST_BUFFER_SIZE (buf) = 1000;
+  GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
+
+  gst_segment_init (&s, GST_FORMAT_DEFAULT);
+  gst_segment_set_newsegment (&s, FALSE, 1.0, GST_FORMAT_DEFAULT, 400,
+      800, 400);
+
+  GST_BUFFER_TIMESTAMP (buf) = 2 * GST_SECOND;
+  GST_BUFFER_DURATION (buf) = GST_CLOCK_TIME_NONE;
+  GST_BUFFER_OFFSET (buf) = 200;
+  GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
+
+  ret = gst_audio_buffer_clip (buf, &s, 100, 1);
+  fail_unless (ret != NULL);
+
+  fail_unless (GST_BUFFER_TIMESTAMP (ret) == 4 * GST_SECOND);
+  fail_unless (GST_BUFFER_DURATION (ret) == GST_CLOCK_TIME_NONE);
+  fail_unless (GST_BUFFER_OFFSET (ret) == 400);
+  fail_unless (GST_BUFFER_OFFSET_END (ret) == GST_BUFFER_OFFSET_NONE);
+  fail_unless (GST_BUFFER_DATA (ret) == data + 200);
+  fail_unless (GST_BUFFER_SIZE (ret) == 400);
+
+  gst_buffer_unref (ret);
+
+  /* If the buffer has no offset it should assert()
+   * FIXME: check if return value is the same as the input buffer.
+   *        probably can't be done because the assert() does a SIGABRT.
+   */
+  buf = gst_buffer_new ();
+  data = (guint8 *) g_malloc (1000);
+  GST_BUFFER_SIZE (buf) = 1000;
+  GST_BUFFER_DATA (buf) = GST_BUFFER_MALLOCDATA (buf) = data;
+
+  gst_segment_init (&s, GST_FORMAT_DEFAULT);
+  gst_segment_set_newsegment (&s, FALSE, 1.0, GST_FORMAT_DEFAULT, 0, 10, 0);
+
+  GST_BUFFER_TIMESTAMP (buf) = 0 * GST_SECOND;
+  GST_BUFFER_DURATION (buf) = GST_CLOCK_TIME_NONE;
+  GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
+  GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
+
+  ASSERT_CRITICAL (ret = gst_audio_buffer_clip (buf, &s, 100, 1));
+
+  gst_buffer_unref (buf);
+}
+
+GST_END_TEST;
+
+static void
+init_value_to_channel_layout (GValue * val, GstAudioChannelPosition pos1,
+    GstAudioChannelPosition pos2)
+{
+  GValue pos = { 0, };
+
+  g_value_init (val, GST_TYPE_ARRAY);
+  g_value_init (&pos, GST_TYPE_AUDIO_CHANNEL_POSITION);
+  g_value_set_enum (&pos, pos1);
+  gst_value_array_append_value (val, &pos);
+  g_value_set_enum (&pos, pos2);
+  gst_value_array_append_value (val, &pos);
+  g_value_unset (&pos);
+}
+
+GST_START_TEST (test_channel_layout_value_intersect)
+{
+  GValue layout = { 0, };
+  GValue list = { 0, };
+  GValue res = { 0, };
+
+  g_value_init (&list, GST_TYPE_LIST);
+  init_value_to_channel_layout (&layout, GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
+      GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT);
+  gst_value_list_append_value (&list, &layout);
+  g_value_unset (&layout);
+  init_value_to_channel_layout (&layout, GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+      GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT);
+  gst_value_list_append_value (&list, &layout);
+  g_value_unset (&layout);
+
+  init_value_to_channel_layout (&layout, GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+      GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT);
+
+  /* we should get the second layout in the list, as it matches the input */
+  fail_unless (gst_value_intersect (&res, &layout, &list));
+  g_value_unset (&layout);
+  fail_unless (GST_VALUE_HOLDS_ARRAY (&res));
+  fail_unless_equals_int (gst_value_array_get_size (&res), 2);
+  fail_unless_equals_int (g_value_get_enum (gst_value_array_get_value (&res,
+              0)), GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT);
+  fail_unless_equals_int (g_value_get_enum (gst_value_array_get_value (&res,
+              1)), GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT);
+  g_value_unset (&res);
+
+  /* this (with rear position) should not yield any results */
+  init_value_to_channel_layout (&layout, GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
+      GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT);
+  fail_if (gst_value_intersect (&res, &layout, &list));
+  g_value_unset (&layout);
+
+  g_value_unset (&list);
+}
+
+GST_END_TEST;
+
+static Suite *
+audio_suite (void)
+{
+  Suite *s = suite_create ("audio support library");
+  TCase *tc_chain = tcase_create ("general");
+
+  suite_add_tcase (s, tc_chain);
+  tcase_add_test (tc_chain, test_multichannel_checks);
+  tcase_add_test (tc_chain, test_buffer_clipping_time);
+  tcase_add_test (tc_chain, test_buffer_clipping_samples);
+  tcase_add_test (tc_chain, test_channel_layout_value_intersect);
+
+  return s;
+}
+
+int
+main (int argc, char **argv)
+{
+  int nf;
+
+  Suite *s = audio_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;
+}