diff -r 000000000000 -r 0e761a78d257 gst_plugins_base/gst/audioconvert/gstchannelmix.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gst_plugins_base/gst/audioconvert/gstchannelmix.h	Thu Dec 17 08:53:32 2009 +0200
@@ -0,0 +1,79 @@
+/* GStreamer
+ * Copyright (C) 2004 Ronald Bultje <rbultje@ronald.bitfreak.net>
+ *
+ * gstchannelmix.h: setup of channel conversion matrices
+ *
+ * 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.
+ */
+
+#ifndef __GST_CHANNEL_MIX_H__
+#define __GST_CHANNEL_MIX_H__
+
+#include <gst/gst.h>
+#include "audioconvert.h"
+
+GST_DEBUG_CATEGORY_EXTERN (audio_convert_debug);
+#define GST_CAT_DEFAULT (audio_convert_debug)
+
+/*
+ * Delete channel mixer matrix.
+ */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void            gst_channel_mix_unset_matrix    (AudioConvertCtx * this);
+
+/*
+ * Setup channel mixer matrix.
+ */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void            gst_channel_mix_setup_matrix    (AudioConvertCtx * this);
+
+/*
+ * Checks for passthrough (= identity matrix).
+ */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean        gst_channel_mix_passthrough     (AudioConvertCtx * this);
+
+/*
+ * Do actual mixing.
+ */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void            gst_channel_mix_mix_int         (AudioConvertCtx * this,
+                                                 gint32          * in_data,
+                                                 gint32          * out_data,
+                                                 gint              samples);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+void            gst_channel_mix_mix_float       (AudioConvertCtx * this,
+                                                 gdouble         * in_data,
+                                                 gdouble         * out_data,
+                                                 gint              samples);
+
+#endif /* __GST_CHANNEL_MIX_H__ */