gstreamer/gst-libs/gst/audio/gstaudiometa.c

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/* GStreamer
* Copyright (C) <2011> Wim Taymans <wim.taymans@gmail.com>
*
* 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.
*/
#include <string.h>
#include "gstaudiometa.h"
static void
gst_audio_downmix_meta_copy (GstBuffer * dest, GstMeta * meta,
GstBuffer * buffer, gsize offset, gsize size)
{
GstAudioDownmixMeta *dmeta, *smeta;
smeta = (GstAudioDownmixMeta *) meta;
dmeta = gst_buffer_add_audio_downmix_meta (dest);
memcpy (dmeta, smeta, sizeof (GstAudioDownmixMeta));
}
const GstMetaInfo *
gst_audio_downmix_meta_get_info (void)
{
static const GstMetaInfo *audio_downmix_meta_info = NULL;
if (audio_downmix_meta_info == NULL) {
audio_downmix_meta_info =
gst_meta_register (GST_AUDIO_DOWNMIX_META_API, "GstAudioDownmixMeta",
sizeof (GstAudioDownmixMeta), (GstMetaInitFunction) NULL,
(GstMetaFreeFunction) NULL, gst_audio_downmix_meta_copy,
(GstMetaTransformFunction) NULL);
}
return audio_downmix_meta_info;
}