FFmpeg
ambient_viewing_environment.c
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1 /*
2  * Copyright (c) 2023 Jan Ekström <jeebjp@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 
22 #include "mem.h"
23 
25 {
28  if (!env)
29  return NULL;
30 
31  if (size)
32  *size = sizeof(*env);
33 
34  return env;
35 }
36 
38 {
39  AVFrameSideData *side_data =
43  if (!side_data)
44  return NULL;
45 
46  memset(side_data->data, 0, side_data->size);
47 
48  return (AVAmbientViewingEnvironment *)side_data->data;
49 }
av_frame_new_side_data
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, size_t size)
Add a new side data to a frame.
Definition: frame.c:812
AVAmbientViewingEnvironment
Ambient viewing environment metadata as defined by H.274.
Definition: ambient_viewing_environment.h:36
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:340
av_ambient_viewing_environment_alloc
AVAmbientViewingEnvironment * av_ambient_viewing_environment_alloc(size_t *size)
Allocate an AVAmbientViewingEnvironment structure.
Definition: ambient_viewing_environment.c:24
AVFrameSideData::size
size_t size
Definition: frame.h:249
frame
static AVFrame * frame
Definition: demux_decode.c:54
NULL
#define NULL
Definition: coverity.c:32
AV_FRAME_DATA_AMBIENT_VIEWING_ENVIRONMENT
@ AV_FRAME_DATA_AMBIENT_VIEWING_ENVIRONMENT
Ambient viewing environment metadata, as defined by H.274.
Definition: frame.h:216
size
int size
Definition: twinvq_data.h:10344
AVFrameSideData::data
uint8_t * data
Definition: frame.h:248
av_ambient_viewing_environment_create_side_data
AVAmbientViewingEnvironment * av_ambient_viewing_environment_create_side_data(AVFrame *frame)
Allocate and add an AVAmbientViewingEnvironment structure to an existing AVFrame as side data.
Definition: ambient_viewing_environment.c:37
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:254
ambient_viewing_environment.h
mem.h
AVFrameSideData
Structure to hold side data for an AVFrame.
Definition: frame.h:246