FFmpeg  4.0
mastering_display_metadata.c
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1 /**
2  * Copyright (c) 2016 Neil Birkbeck <neil.birkbeck@gmail.com>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <stdint.h>
22 #include <string.h>
23 
25 #include "mem.h"
26 
28 {
29  return av_mallocz(sizeof(AVMasteringDisplayMetadata));
30 }
31 
33 {
34  AVFrameSideData *side_data = av_frame_new_side_data(frame,
37  if (!side_data)
38  return NULL;
39 
40  memset(side_data->data, 0, sizeof(AVMasteringDisplayMetadata));
41 
42  return (AVMasteringDisplayMetadata *)side_data->data;
43 }
44 
46 {
48 
49  if (size)
50  *size = sizeof(*metadata);
51 
52  return metadata;
53 }
54 
56 {
57  AVFrameSideData *side_data = av_frame_new_side_data(frame,
59  sizeof(AVContentLightMetadata));
60  if (!side_data)
61  return NULL;
62 
63  memset(side_data->data, 0, sizeof(AVContentLightMetadata));
64 
65  return (AVContentLightMetadata *)side_data->data;
66 }
#define NULL
Definition: coverity.c:32
int size
This structure describes decoded (raw) audio or video data.
Definition: frame.h:218
Memory handling functions.
Content light level (based on CTA-861.3).
Definition: frame.h:136
Mastering display metadata associated with a video frame.
Definition: frame.h:119
static AVFrame * frame
Structure to hold side data for an AVFrame.
Definition: frame.h:180
Content light level needed by to transmit HDR over HDMI (CTA-861.3).
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
AVMasteringDisplayMetadata * av_mastering_display_metadata_alloc(void)
Copyright (c) 2016 Neil Birkbeck neil.birkbeck@gmail.com
AVContentLightMetadata * av_content_light_metadata_alloc(size_t *size)
Allocate an AVContentLightMetadata structure and set its fields to default values.
AVMasteringDisplayMetadata * av_mastering_display_metadata_create_side_data(AVFrame *frame)
Allocate a complete AVMasteringDisplayMetadata and add it to the frame.
uint8_t * data
Definition: frame.h:182
AVContentLightMetadata * av_content_light_metadata_create_side_data(AVFrame *frame)
Allocate a complete AVContentLightMetadata and add it to the frame.
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, int size)
Add a new side data to a frame.
Definition: frame.c:720
Mastering display metadata capable of representing the color volume of the display used to master the...