FFmpeg
hdr_dynamic_metadata.c
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1 /**
2  * Copyright (c) 2018 Mohammad Izadi <moh.izadi at 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 "hdr_dynamic_metadata.h"
22 #include "mem.h"
23 
25 {
26  AVDynamicHDRPlus *hdr_plus = av_mallocz(sizeof(AVDynamicHDRPlus));
27  if (!hdr_plus)
28  return NULL;
29 
30  if (size)
31  *size = sizeof(*hdr_plus);
32 
33  return hdr_plus;
34 }
35 
37 {
40  sizeof(AVDynamicHDRPlus));
41  if (!side_data)
42  return NULL;
43 
44  memset(side_data->data, 0, sizeof(AVDynamicHDRPlus));
45 
46  return (AVDynamicHDRPlus *)side_data->data;
47 }
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:604
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
NULL
#define NULL
Definition: coverity.c:32
size
int size
Definition: twinvq_data.h:10344
AVFrameSideData::data
uint8_t * data
Definition: frame.h:211
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:244
AVDynamicHDRPlus
This struct represents dynamic metadata for color volume transform - application 4 of SMPTE 2094-40:2...
Definition: hdr_dynamic_metadata.h:243
av_dynamic_hdr_plus_create_side_data
AVDynamicHDRPlus * av_dynamic_hdr_plus_create_side_data(AVFrame *frame)
Allocate a complete AVDynamicHDRPlus and add it to the frame.
Definition: hdr_dynamic_metadata.c:36
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
AV_FRAME_DATA_DYNAMIC_HDR_PLUS
@ AV_FRAME_DATA_DYNAMIC_HDR_PLUS
HDR dynamic metadata associated with a video frame.
Definition: frame.h:158
hdr_dynamic_metadata.h
mem.h
AVFrameSideData
Structure to hold side data for an AVFrame.
Definition: frame.h:209
av_dynamic_hdr_plus_alloc
AVDynamicHDRPlus * av_dynamic_hdr_plus_alloc(size_t *size)
Copyright (c) 2018 Mohammad Izadi <moh.izadi at gmail.com>
Definition: hdr_dynamic_metadata.c:24