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

/* 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;
}