/*
  * Copyright (c) 2013 Vittorio Giovara <vittorio.giovara@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 <stdint.h>

 #include <string.h>

 #include "common.h"

 #include "mem.h"
 #include "stereo3d.h"
 
 AVStereo3D *av_stereo3d_alloc(void)
 {
     return av_mallocz(sizeof(AVStereo3D));
 }
 
 AVStereo3D *av_stereo3d_create_side_data(AVFrame *frame)
 {
     AVFrameSideData *side_data = av_frame_new_side_data(frame,
                                                         AV_FRAME_DATA_STEREO3D,
                                                         sizeof(AVStereo3D));
     if (!side_data)
         return NULL;
 

     memset(side_data->data, 0, sizeof(AVStereo3D));
 

     return (AVStereo3D *)side_data->data;
 }

 static const char * const stereo3d_type_names[] = {

     [AV_STEREO3D_2D]                  = "2D",
     [AV_STEREO3D_SIDEBYSIDE]          = "side by side",
     [AV_STEREO3D_TOPBOTTOM]           = "top and bottom",
     [AV_STEREO3D_FRAMESEQUENCE]       = "frame alternate",
     [AV_STEREO3D_CHECKERBOARD]        = "checkerboard",
     [AV_STEREO3D_SIDEBYSIDE_QUINCUNX] = "side by side (quincunx subsampling)",
     [AV_STEREO3D_LINES]               = "interleaved lines",
     [AV_STEREO3D_COLUMNS]             = "interleaved columns",
 };
 
 const char *av_stereo3d_type_name(unsigned int type)
 {
     if (type >= FF_ARRAY_ELEMS(stereo3d_type_names))
         return "unknown";
 
     return stereo3d_type_names[type];
 }
 
 int av_stereo3d_from_name(const char *name)
 {
     int i;
 
     for (i = 0; i < FF_ARRAY_ELEMS(stereo3d_type_names); i++) {
         size_t len = strlen(stereo3d_type_names[i]);
         if (!strncmp(stereo3d_type_names[i], name, len))
             return i;
     }
 
     return -1;
 }