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avcodec/av1dec: use named constants for ITU-T T.35 metadata

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Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2024-03-11 10:59:32 -03:00
parent f4e0664fd1
commit 4ca5d45193
2 changed files with 35 additions and 5 deletions
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12
libavcodec/av1dec.c
View File

@ -34,6 +34,7 @@
#include "decode.h"
#include "hwaccel_internal.h"
#include "internal.h"
#include "itut35.h"
#include "hwconfig.h"
#include "profiles.h"
#include "refstruct.h"
@ -951,7 +952,7 @@ static int export_itut_t35(AVCodecContext *avctx, AVFrame *frame,
provider_code = bytestream2_get_be16(&gb);
switch (provider_code) {
case 0x31: { // atsc_provider_code
case ITU_T_T35_PROVIDER_CODE_ATSC: {
uint32_t user_identifier = bytestream2_get_be32(&gb);
switch (user_identifier) {
case MKBETAG('G', 'A', '9', '4'): { // closed captions
@ -975,12 +976,12 @@ static int export_itut_t35(AVCodecContext *avctx, AVFrame *frame,
}
break;
}
case 0x3C: { // smpte_provider_code
case ITU_T_T35_PROVIDER_CODE_SMTPE: {
AVDynamicHDRPlus *hdrplus;
int provider_oriented_code = bytestream2_get_be16(&gb);
int application_identifier = bytestream2_get_byte(&gb);
if (itut_t35->itu_t_t35_country_code != 0xB5 ||
if (itut_t35->itu_t_t35_country_code != ITU_T_T35_COUNTRY_CODE_US ||
provider_oriented_code != 1 || application_identifier != 4)
break;
@ -994,9 +995,10 @@ static int export_itut_t35(AVCodecContext *avctx, AVFrame *frame,
return ret;
break;
}
case 0x3B: { // dolby_provider_code
case ITU_T_T35_PROVIDER_CODE_DOLBY: {
int provider_oriented_code = bytestream2_get_be32(&gb);
if (itut_t35->itu_t_t35_country_code != 0xB5 || provider_oriented_code != 0x800)
if (itut_t35->itu_t_t35_country_code != ITU_T_T35_COUNTRY_CODE_US ||
provider_oriented_code != 0x800)
break;
ret = ff_dovi_rpu_parse(&s->dovi, gb.buffer, gb.buffer_end - gb.buffer);

28
libavcodec/itut35.h Normal file
View File

@ -0,0 +1,28 @@
/*
* 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
*/
#ifndef AVCODEC_ITUT35_H
#define AVCODEC_ITUT35_H
#define ITU_T_T35_COUNTRY_CODE_US 0xB5
#define ITU_T_T35_PROVIDER_CODE_ATSC 0x31
#define ITU_T_T35_PROVIDER_CODE_DOLBY 0x3B
#define ITU_T_T35_PROVIDER_CODE_SMTPE 0x3C
#endif /* AVCODEC_ITUT35_H */