7f1b590480
Prevent potential divisions by 0 when using them immediately after allocation. Signed-off-by: James Almer <jamrial@gmail.com>
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/*
|
|
* 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;
|
|
}
|