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avutil/frame: add helper for adding side data to array

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Additionally, add an API test to check that the no-duplicates
addition works after duplicates have been inserted.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Jan Ekström 2023-03-19 15:00:33 +02:00 committed by Paul B Mahol
parent 25479808c8
commit f47eaeb9c4
6 changed files with 161 additions and 0 deletions
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1
libavutil/Makefile
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@ -271,6 +271,7 @@ TESTPROGS = adler32 \
ripemd \
sha \
sha512 \
side_data_array \
softfloat \
tree \
twofish \

17
libavutil/frame.c
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@ -747,6 +747,23 @@ AVFrameSideData *av_frame_new_side_data(AVFrame *frame,
return ret;
}
AVFrameSideData *av_frame_side_data_new(AVFrameSideData ***sd, int *nb_sd,
enum AVFrameSideDataType type,
size_t size, unsigned int flags)
{
AVBufferRef *buf = av_buffer_alloc(size);
AVFrameSideData *ret = NULL;
if (flags & AV_FRAME_SIDE_DATA_FLAG_UNIQUE)
remove_side_data(sd, nb_sd, type);
ret = add_side_data_from_buf(sd, nb_sd, type, buf);
if (!ret)
av_buffer_unref(&buf);
return ret;
}
AVFrameSideData *av_frame_get_side_data(const AVFrame *frame,
enum AVFrameSideDataType type)
{

22
libavutil/frame.h
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@ -999,6 +999,28 @@ const char *av_frame_side_data_name(enum AVFrameSideDataType type);
*/
void av_frame_side_data_free(AVFrameSideData ***sd, int *nb_sd);
#define AV_FRAME_SIDE_DATA_FLAG_UNIQUE (1 << 0)
/**
* Add new side data entry to an array.
*
* @param sd pointer to array of side data to which to add another entry,
* or to NULL in order to start a new array.
* @param nb_sd pointer to an integer containing the number of entries in
* the array.
* @param type type of the added side data
* @param size size of the side data
* @param flags Some combination of AV_FRAME_SIDE_DATA_FLAG_* flags, or 0.
*
* @return newly added side data on success, NULL on error. In case of
* AV_FRAME_SIDE_DATA_FLAG_UNIQUE being set, entries of matching
* AVFrameSideDataType will be removed before the addition is
* attempted.
*/
AVFrameSideData *av_frame_side_data_new(AVFrameSideData ***sd, int *nb_sd,
enum AVFrameSideDataType type,
size_t size, unsigned int flags);
/**
* @}
*/

103
libavutil/tests/side_data_array.c Normal file
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@ -0,0 +1,103 @@
/*
* 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
*/
#include <stdio.h>
#include "libavutil/frame.c"
#include "libavutil/mastering_display_metadata.h"
static void print_clls(const AVFrameSideData **sd, const int nb_sd)
{
for (int i = 0; i < nb_sd; i++) {
const AVFrameSideData *entry = sd[i];
printf("sd %d, %s",
i, av_frame_side_data_name(entry->type));
if (entry->type != AV_FRAME_DATA_CONTENT_LIGHT_LEVEL) {
putchar('\n');
continue;
}
printf(": MaxCLL: %u\n",
((AVContentLightMetadata *)entry->data)->MaxCLL);
}
}
typedef struct FrameSideDataSet {
AVFrameSideData **sd;
int nb_sd;
} FrameSideDataSet;
int main(void)
{
FrameSideDataSet set = { 0 };
av_assert0(
av_frame_side_data_new(&set.sd, &set.nb_sd,
AV_FRAME_DATA_AMBIENT_VIEWING_ENVIRONMENT,
0, 0));
// test entries in the middle
for (int value = 1; value < 4; value++) {
AVFrameSideData *sd = av_frame_side_data_new(
&set.sd, &set.nb_sd, AV_FRAME_DATA_CONTENT_LIGHT_LEVEL,
sizeof(AVContentLightMetadata), 0);
av_assert0(sd);
((AVContentLightMetadata *)sd->data)->MaxCLL = value;
}
av_assert0(
av_frame_side_data_new(
&set.sd, &set.nb_sd, AV_FRAME_DATA_SPHERICAL, 0, 0));
// test entries at the end
for (int value = 1; value < 4; value++) {
AVFrameSideData *sd = av_frame_side_data_new(
&set.sd, &set.nb_sd, AV_FRAME_DATA_CONTENT_LIGHT_LEVEL,
sizeof(AVContentLightMetadata), 0);
av_assert0(sd);
((AVContentLightMetadata *)sd->data)->MaxCLL = value + 3;
}
puts("Initial addition results with duplicates:");
print_clls((const AVFrameSideData **)set.sd, set.nb_sd);
{
AVFrameSideData *sd = av_frame_side_data_new(
&set.sd, &set.nb_sd, AV_FRAME_DATA_CONTENT_LIGHT_LEVEL,
sizeof(AVContentLightMetadata),
AV_FRAME_SIDE_DATA_FLAG_UNIQUE);
av_assert0(sd);
((AVContentLightMetadata *)sd->data)->MaxCLL = 1337;
}
puts("\nFinal state after a single 'no-duplicates' addition:");
print_clls((const AVFrameSideData **)set.sd, set.nb_sd);
av_frame_side_data_free(&set.sd, &set.nb_sd);
return 0;
}

4
tests/fate/libavutil.mak
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@ -148,6 +148,10 @@ FATE_LIBAVUTIL += fate-sha512
fate-sha512: libavutil/tests/sha512$(EXESUF)
fate-sha512: CMD = run libavutil/tests/sha512$(EXESUF)
FATE_LIBAVUTIL += fate-side_data_array
fate-side_data_array: libavutil/tests/side_data_array$(EXESUF)
fate-side_data_array: CMD = run libavutil/tests/side_data_array$(EXESUF)
FATE_LIBAVUTIL += fate-tree
fate-tree: libavutil/tests/tree$(EXESUF)
fate-tree: CMD = run libavutil/tests/tree$(EXESUF)

14
tests/ref/fate/side_data_array Normal file
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@ -0,0 +1,14 @@
Initial addition results with duplicates:
sd 0, Ambient viewing environment
sd 1, Content light level metadata: MaxCLL: 1
sd 2, Content light level metadata: MaxCLL: 2
sd 3, Content light level metadata: MaxCLL: 3
sd 4, Spherical Mapping
sd 5, Content light level metadata: MaxCLL: 4
sd 6, Content light level metadata: MaxCLL: 5
sd 7, Content light level metadata: MaxCLL: 6
Final state after a single 'no-duplicates' addition:
sd 0, Ambient viewing environment
sd 1, Spherical Mapping
sd 2, Content light level metadata: MaxCLL: 1337