/**
* Copyright ( c ) 2016 Neil Birkbeck < neil . birkbeck @ 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 <stddef.h>
#include <stdint.h>
#include <string.h>
#include "mastering_display_metadata.h"
#include "mem.h"
static void get_defaults(AVMasteringDisplayMetadata *mastering)
{
for (int i = 0 ; i < 3 ; i++)
for (int j = 0 ; j < 2 ; j++)
mastering->display_primaries[i][j] = (AVRational) { 0 , 1 };
mastering->white_point[0 ] =
mastering->white_point[1 ] =
mastering->min_luminance =
mastering->max_luminance = (AVRational) { 0 , 1 };
}
AVMasteringDisplayMetadata *av_mastering_display_metadata_alloc(void )
{
return av_mastering_display_metadata_alloc_size(NULL);
}
AVMasteringDisplayMetadata *av_mastering_display_metadata_alloc_size(size_t *size)
{
AVMasteringDisplayMetadata *mastering = av_mallocz(sizeof (AVMasteringDisplayMetadata));
if (!mastering)
return NULL;
get_defaults(mastering);
if (size)
*size = sizeof (*mastering);
return mastering;
}
AVMasteringDisplayMetadata *av_mastering_display_metadata_create_side_data(AVFrame *frame)
{
AVFrameSideData *side_data = av_frame_new_side_data(frame,
AV_FRAME_DATA_MASTERING_DISPLAY_METADATA,
sizeof (AVMasteringDisplayMetadata));
if (!side_data)
return NULL;
memset(side_data->data, 0 , sizeof (AVMasteringDisplayMetadata));
get_defaults((AVMasteringDisplayMetadata *)side_data->data);
return (AVMasteringDisplayMetadata *)side_data->data;
}
AVContentLightMetadata *av_content_light_metadata_alloc(size_t *size)
{
AVContentLightMetadata *metadata = av_mallocz(sizeof (AVContentLightMetadata));
if (size)
*size = sizeof (*metadata);
return metadata;
}
AVContentLightMetadata *av_content_light_metadata_create_side_data(AVFrame *frame)
{
AVFrameSideData *side_data = av_frame_new_side_data(frame,
AV_FRAME_DATA_CONTENT_LIGHT_LEVEL,
sizeof (AVContentLightMetadata));
if (!side_data)
return NULL;
memset(side_data->data, 0 , sizeof (AVContentLightMetadata));
return (AVContentLightMetadata *)side_data->data;
}
Messung V0.5 in Prozent C=99 H=86 G=92
¤ Dauer der Verarbeitung: 0.16 Sekunden
(vorverarbeitet am 2026-08-22)
¤
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