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/*
* Copyright (c) 2023 Jan Ekström <jeebjp@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 "ambient_viewing_environment.h"
#include "mem.h"
static void get_defaults(AVAmbientViewingEnvironment *env)
{
env->ambient_illuminance =
env->ambient_light_x =
env->ambient_light_y = (AVRational) { 0, 1 };
}
AVAmbientViewingEnvironment *av_ambient_viewing_environment_alloc(size_t *size)
{
AVAmbientViewingEnvironment *env =
av_mallocz(sizeof(AVAmbientViewingEnvironment));
if (!env)
return NULL;
get_defaults(env);
if (size)
*size = sizeof(*env);
return env;
}
AVAmbientViewingEnvironment *av_ambient_viewing_environment_create_side_data(AVFrame *frame)
{
AVFrameSideData *side_data =
av_frame_new_side_data(frame,
AV_FRAME_DATA_AMBIENT_VIEWING_ENVIRONMENT,
sizeof(AVAmbientViewingEnvironment));
if (!side_data)
return NULL;
memset(side_data->data, 0, side_data->size);
get_defaults((AVAmbientViewingEnvironment *)side_data->data);
return (AVAmbientViewingEnvironment *)side_data->data;
}
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