/*
  * Copyright (c) 2014 Tim Walker <tdskywalker@gmail.com>
  *

  * This file is part of FFmpeg.

  *

  * FFmpeg is free software; you can redistribute it and/or

  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *

  * FFmpeg 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
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public

  * License along with FFmpeg; if not, write to the Free Software

  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include "downmix_info.h"
 #include "frame.h"
 
 AVDownmixInfo *av_downmix_info_update_side_data(AVFrame *frame)
 {
     AVFrameSideData *side_data;
 
     side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_DOWNMIX_INFO);
 
     if (!side_data)
         side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_DOWNMIX_INFO,
                                            sizeof(AVDownmixInfo));
 
     if (!side_data)
         return NULL;
 
     return (AVDownmixInfo*)side_data->data;
 }