--- /dev/null
+/* GStreamer
+ * Copyright (C) 2005 Benjamin Otte <otte@gnome.org>
+ *
+ * channelmixtest.c: simple test of channel mixing
+ *
+ * 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 "gstchannelmix.h"
+#include "plugin.h"
+
+int
+main (gint argc, gchar ** argv)
+{
+ GstElement *bin, *src, *sink;
+ GstAudioConvert *c;
+ GstCaps *caps;
+ guint i, j, k;
+ struct
+ {
+ gchar *sinkcaps;
+ gchar *srccaps;
+ gfloat matrix[6][6]; /* use a predefined matrix here, makes stuff simpler */
+ } tests[] = {
+ /* stereo => mono */
+ {
+ "audio/x-raw-int, channels=2", "audio/x-raw-int, channels=1", { {
+ 0.5,}, {
+ 0.5,},}},
+ /* mono => stereo */
+ {
+ "audio/x-raw-int, channels=1", "audio/x-raw-int, channels=2", { {
+ 1, 1,},}}
+ };
+
+ gst_init (&argc, &argv);
+
+ for (i = 0; i < G_N_ELEMENTS (tests); i++) {
+ g_print ("running test %u\n", i);
+ bin = gst_element_factory_make ("pipeline", NULL);
+ c = g_object_new (GST_TYPE_AUDIO_CONVERT, NULL);
+ /* avoid gst being braindead */
+ gst_object_set_name (GST_OBJECT (c), "shuddup");
+ src = gst_element_factory_make ("fakesrc", NULL);
+ sink = gst_element_factory_make ("fakesink", NULL);
+ gst_bin_add_many (GST_BIN (bin), src, c, sink, NULL);
+ caps = gst_caps_from_string (tests[i].sinkcaps);
+ g_assert (caps);
+ if (!gst_element_link_filtered (src, GST_ELEMENT (c), caps))
+ g_assert_not_reached ();
+ gst_caps_unref (caps);
+ caps = gst_caps_from_string (tests[i].srccaps);
+ g_assert (caps);
+ if (!gst_element_link_filtered (GST_ELEMENT (c), sink, caps))
+ g_assert_not_reached ();
+ gst_caps_unref (caps);
+ if (!gst_element_set_state (bin, GST_STATE_PLAYING))
+ g_assert_not_reached ();
+ g_assert (c->srccaps.channels <= 6);
+ g_assert (c->sinkcaps.channels <= 6);
+ for (j = 0; j < 6; j++) {
+ for (k = 0; k < 6; k++) {
+ if (j < c->sinkcaps.channels && k < c->srccaps.channels) {
+ if (tests[i].matrix[j][k] != c->matrix[j][k]) {
+ g_printerr ("matrix[j][k] should be %g but is %g\n",
+ tests[i].matrix[j][k], c->matrix[j][k]);
+ g_assert_not_reached ();
+ }
+ } else {
+ g_assert (tests[i].matrix[j][k] == 0);
+ }
+ }
+ }
+ gst_object_unref (bin);
+ }
+
+ return 0;
+}