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/*
* Copyright (c) 2013 Vittorio Giovara <vittorio.giovara@gmail.com>
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; 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;
}
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