mirror of https://git.videolan.org/git/ffmpeg.git
73 lines
2.5 KiB
C
73 lines
2.5 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
|
|
*/
|
|
|
|
#ifndef AVUTIL_AMBIENT_VIEWING_ENVIRONMENT_H
|
|
#define AVUTIL_AMBIENT_VIEWING_ENVIRONMENT_H
|
|
|
|
#include <stddef.h>
|
|
#include "frame.h"
|
|
#include "rational.h"
|
|
|
|
/**
|
|
* Ambient viewing environment metadata as defined by H.274. The values are
|
|
* saved in AVRationals so that they keep their exactness, while allowing for
|
|
* easy access to a double value with f.ex. av_q2d.
|
|
*
|
|
* @note sizeof(AVAmbientViewingEnvironment) is not part of the public ABI, and
|
|
* it must be allocated using av_ambient_viewing_environment_alloc.
|
|
*/
|
|
typedef struct AVAmbientViewingEnvironment {
|
|
/**
|
|
* Environmental illuminance of the ambient viewing environment in lux.
|
|
*/
|
|
AVRational ambient_illuminance;
|
|
|
|
/**
|
|
* Normalized x chromaticity coordinate of the environmental ambient light
|
|
* in the nominal viewing environment according to the CIE 1931 definition
|
|
* of x and y as specified in ISO/CIE 11664-1.
|
|
*/
|
|
AVRational ambient_light_x;
|
|
|
|
/**
|
|
* Normalized y chromaticity coordinate of the environmental ambient light
|
|
* in the nominal viewing environment according to the CIE 1931 definition
|
|
* of x and y as specified in ISO/CIE 11664-1.
|
|
*/
|
|
AVRational ambient_light_y;
|
|
} AVAmbientViewingEnvironment;
|
|
|
|
/**
|
|
* Allocate an AVAmbientViewingEnvironment structure.
|
|
*
|
|
* @return the newly allocated struct or NULL on failure
|
|
*/
|
|
AVAmbientViewingEnvironment *av_ambient_viewing_environment_alloc(size_t *size);
|
|
|
|
/**
|
|
* Allocate and add an AVAmbientViewingEnvironment structure to an existing
|
|
* AVFrame as side data.
|
|
*
|
|
* @return the newly allocated struct, or NULL on failure
|
|
*/
|
|
AVAmbientViewingEnvironment *av_ambient_viewing_environment_create_side_data(AVFrame *frame);
|
|
|
|
#endif /* AVUTIL_AMBIENT_VIEWING_ENVIRONMENT_H */
|