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FFmpeg/libavcodec/h2645_sei.c
Jan Ekström 5de565107a avcodec/h2645_sei: add support for Ambient Viewing Environment SEI 
Defined by H.274, this SEI message is utilized by iPhones to save
the nominal ambient viewing environment for the display of recorded
HDR content. The contents of the message are exposed to API users
as AVFrame side data containing AVAmbientViewingEnvironment.

As the DV RPU test sample is from an iPhone and includes Ambient
Viewing Environment SEI messages, its test result gets updated.
2023-01-13 21:26:27 +02:00

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/*
* Common H.264 and HEVC Supplementary Enhancement Information messages
*
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
* Copyright (C) 2012 - 2013 Guillaume Martres
* Copyright (C) 2012 - 2013 Gildas Cocherel
* Copyright (C) 2013 Vittorio Giovara
*
* 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 "config_components.h"
#include "libavutil/ambient_viewing_environment.h"
#include "libavutil/display.h"
#include "libavutil/film_grain_params.h"
#include "libavutil/pixdesc.h"
#include "libavutil/stereo3d.h"
#include "atsc_a53.h"
#include "avcodec.h"
#include "dynamic_hdr10_plus.h"
#include "dynamic_hdr_vivid.h"
#include "get_bits.h"
#include "golomb.h"
#include "h2645_sei.h"
#define IS_H264(codec_id) (CONFIG_H264_SEI && CONFIG_HEVC_SEI ? codec_id == AV_CODEC_ID_H264 : CONFIG_H264_SEI)
#define IS_HEVC(codec_id) (CONFIG_H264_SEI && CONFIG_HEVC_SEI ? codec_id == AV_CODEC_ID_HEVC : CONFIG_HEVC_SEI)
#if CONFIG_HEVC_SEI
static int decode_registered_user_data_dynamic_hdr_plus(HEVCSEIDynamicHDRPlus *s,
GetByteContext *gb)
{
size_t meta_size;
int err;
AVDynamicHDRPlus *metadata = av_dynamic_hdr_plus_alloc(&meta_size);
if (!metadata)
return AVERROR(ENOMEM);
err = ff_parse_itu_t_t35_to_dynamic_hdr10_plus(metadata, gb->buffer,
bytestream2_get_bytes_left(gb));
if (err < 0) {
av_free(metadata);
return err;
}
av_buffer_unref(&s->info);
s->info = av_buffer_create((uint8_t *)metadata, meta_size, NULL, NULL, 0);
if (!s->info) {
av_free(metadata);
return AVERROR(ENOMEM);
}
return 0;
}
static int decode_registered_user_data_dynamic_hdr_vivid(HEVCSEIDynamicHDRVivid *s,
GetByteContext *gb)
{
size_t meta_size;
int err;
AVDynamicHDRVivid *metadata = av_dynamic_hdr_vivid_alloc(&meta_size);
if (!metadata)
return AVERROR(ENOMEM);
err = ff_parse_itu_t_t35_to_dynamic_hdr_vivid(metadata,
gb->buffer, bytestream2_get_bytes_left(gb));
if (err < 0) {
av_free(metadata);
return err;
}
av_buffer_unref(&s->info);
s->info = av_buffer_create((uint8_t *)metadata, meta_size, NULL, NULL, 0);
if (!s->info) {
av_free(metadata);
return AVERROR(ENOMEM);
}
return 0;
}
#endif
static int decode_registered_user_data_afd(H2645SEIAFD *h, GetByteContext *gb)
{
int flag;
if (bytestream2_get_bytes_left(gb) <= 0)
return AVERROR_INVALIDDATA;
flag = !!(bytestream2_get_byteu(gb) & 0x40); // active_format_flag
if (flag) {
if (bytestream2_get_bytes_left(gb) <= 0)
return AVERROR_INVALIDDATA;
h->active_format_description = bytestream2_get_byteu(gb) & 0xF;
h->present = 1;
}
return 0;
}
static int decode_registered_user_data_closed_caption(H2645SEIA53Caption *h,
GetByteContext *gb)
{
return ff_parse_a53_cc(&h->buf_ref, gb->buffer,
bytestream2_get_bytes_left(gb));
}
static int decode_registered_user_data(H2645SEI *h, GetByteContext *gb,
enum AVCodecID codec_id, void *logctx)
{
int country_code, provider_code;
if (bytestream2_get_bytes_left(gb) < 3)
return AVERROR_INVALIDDATA;
country_code = bytestream2_get_byteu(gb); // itu_t_t35_country_code
if (country_code == 0xFF) {
if (bytestream2_get_bytes_left(gb) < 3)
return AVERROR_INVALIDDATA;
bytestream2_skipu(gb, 1); // itu_t_t35_country_code_extension_byte
}
if (country_code != 0xB5 && country_code != 0x26) { // usa_country_code and cn_country_code
av_log(logctx, AV_LOG_VERBOSE,
"Unsupported User Data Registered ITU-T T35 SEI message (country_code = %d)\n",
country_code);
return 0;
}
/* itu_t_t35_payload_byte follows */
provider_code = bytestream2_get_be16u(gb);
switch (provider_code) {
case 0x31: { // atsc_provider_code
uint32_t user_identifier;
if (bytestream2_get_bytes_left(gb) < 4)
return AVERROR_INVALIDDATA;
user_identifier = bytestream2_get_be32u(gb);
switch (user_identifier) {
case MKBETAG('D', 'T', 'G', '1'): // afd_data
return decode_registered_user_data_afd(&h->afd, gb);
case MKBETAG('G', 'A', '9', '4'): // closed captions
return decode_registered_user_data_closed_caption(&h->a53_caption, gb);
default:
av_log(logctx, AV_LOG_VERBOSE,
"Unsupported User Data Registered ITU-T T35 SEI message (atsc user_identifier = 0x%04x)\n",
user_identifier);
break;
}
break;
}
#if CONFIG_HEVC_SEI
case 0x04: { // cuva_provider_code
const uint16_t cuva_provider_oriented_code = 0x0005;
uint16_t provider_oriented_code;
if (!IS_HEVC(codec_id))
goto unsupported_provider_code;
if (bytestream2_get_bytes_left(gb) < 2)
return AVERROR_INVALIDDATA;
provider_oriented_code = bytestream2_get_be16u(gb);
if (provider_oriented_code == cuva_provider_oriented_code) {
return decode_registered_user_data_dynamic_hdr_vivid(&h->dynamic_hdr_vivid, gb);
}
break;
}
case 0x3C: { // smpte_provider_code
// A/341 Amendment - 2094-40
const uint16_t smpte2094_40_provider_oriented_code = 0x0001;
const uint8_t smpte2094_40_application_identifier = 0x04;
uint16_t provider_oriented_code;
uint8_t application_identifier;
if (!IS_HEVC(codec_id))
goto unsupported_provider_code;
if (bytestream2_get_bytes_left(gb) < 3)
return AVERROR_INVALIDDATA;
provider_oriented_code = bytestream2_get_be16u(gb);
application_identifier = bytestream2_get_byteu(gb);
if (provider_oriented_code == smpte2094_40_provider_oriented_code &&
application_identifier == smpte2094_40_application_identifier) {
return decode_registered_user_data_dynamic_hdr_plus(&h->dynamic_hdr_plus, gb);
}
break;
}
unsupported_provider_code:
#endif
default:
av_log(logctx, AV_LOG_VERBOSE,
"Unsupported User Data Registered ITU-T T35 SEI message (provider_code = %d)\n",
provider_code);
break;
}
return 0;
}
static int decode_unregistered_user_data(H2645SEIUnregistered *h,
GetByteContext *gb,
enum AVCodecID codec_id)
{
uint8_t *user_data;
int size = bytestream2_get_bytes_left(gb);
AVBufferRef *buf_ref, **tmp;
if (size < 16 || size >= INT_MAX - 1)
return AVERROR_INVALIDDATA;
tmp = av_realloc_array(h->buf_ref, h->nb_buf_ref + 1, sizeof(*h->buf_ref));
if (!tmp)
return AVERROR(ENOMEM);
h->buf_ref = tmp;
buf_ref = av_buffer_alloc(size + 1);
if (!buf_ref)
return AVERROR(ENOMEM);
user_data = buf_ref->data;
bytestream2_get_bufferu(gb, user_data, size);
user_data[size] = 0;
buf_ref->size = size;
h->buf_ref[h->nb_buf_ref++] = buf_ref;
if (IS_H264(codec_id)) {
int e, build;
e = sscanf(user_data + 16, "x264 - core %d", &build);
if (e == 1 && build > 0)
h->x264_build = build;
if (e == 1 && build == 1 && !strncmp(user_data+16, "x264 - core 0000", 16))
h->x264_build = 67;
}
return 0;
}
static int decode_display_orientation(H2645SEIDisplayOrientation *h,
GetBitContext *gb)
{
h->present = !get_bits1(gb); // display_orientation_cancel_flag
if (h->present) {
h->hflip = get_bits1(gb); // hor_flip
h->vflip = get_bits1(gb); // ver_flip
h->anticlockwise_rotation = get_bits(gb, 16);
// This is followed by display_orientation_repetition_period
// and display_orientation_extension_flag for H.264
// and by display_orientation_persistence_flag for HEVC.
}
return 0;
}
static int decode_frame_packing_arrangement(H2645SEIFramePacking *h,
GetBitContext *gb,
enum AVCodecID codec_id)
{
h->arrangement_id = get_ue_golomb_long(gb);
h->arrangement_cancel_flag = get_bits1(gb);
h->present = !h->arrangement_cancel_flag;
if (h->present) {
h->arrangement_type = get_bits(gb, 7);
h->quincunx_sampling_flag = get_bits1(gb);
h->content_interpretation_type = get_bits(gb, 6);
// spatial_flipping_flag, frame0_flipped_flag, field_views_flag
skip_bits(gb, 3);
h->current_frame_is_frame0_flag = get_bits1(gb);
// frame0_self_contained_flag, frame1_self_contained_flag
skip_bits(gb, 2);
if (!h->quincunx_sampling_flag && h->arrangement_type != 5)
skip_bits(gb, 16); // frame[01]_grid_position_[xy]
skip_bits(gb, 8); // frame_packing_arrangement_reserved_byte
if (IS_H264(codec_id))
h->arrangement_repetition_period = get_ue_golomb_long(gb);
else
skip_bits1(gb); // frame_packing_arrangement_persistence_flag
}
// H.264: frame_packing_arrangement_extension_flag,
// HEVC: upsampled_aspect_ratio_flag
skip_bits1(gb);
return 0;
}
static int decode_alternative_transfer(H2645SEIAlternativeTransfer *s,
GetByteContext *gb)
{
if (bytestream2_get_bytes_left(gb) < 1)
return AVERROR_INVALIDDATA;
s->present = 1;
s->preferred_transfer_characteristics = bytestream2_get_byteu(gb);
return 0;
}
static int decode_ambient_viewing_environment(H2645SEIAmbientViewingEnvironment *s,
GetByteContext *gb)
{
static const uint16_t max_ambient_light_value = 50000;
if (bytestream2_get_bytes_left(gb) < 8)
return AVERROR_INVALIDDATA;
s->ambient_illuminance = bytestream2_get_be32u(gb);
if (!s->ambient_illuminance)
return AVERROR_INVALIDDATA;
s->ambient_light_x = bytestream2_get_be16u(gb);
if (s->ambient_light_x > max_ambient_light_value)
return AVERROR_INVALIDDATA;
s->ambient_light_y = bytestream2_get_be16u(gb);
if (s->ambient_light_y > max_ambient_light_value)
return AVERROR_INVALIDDATA;
s->present = 1;
return 0;
}
static int decode_film_grain_characteristics(H2645SEIFilmGrainCharacteristics *h,
enum AVCodecID codec_id, GetBitContext *gb)
{
h->present = !get_bits1(gb); // film_grain_characteristics_cancel_flag
if (h->present) {
memset(h, 0, sizeof(*h));
h->model_id = get_bits(gb, 2);
h->separate_colour_description_present_flag = get_bits1(gb);
if (h->separate_colour_description_present_flag) {
h->bit_depth_luma = get_bits(gb, 3) + 8;
h->bit_depth_chroma = get_bits(gb, 3) + 8;
h->full_range = get_bits1(gb);
h->color_primaries = get_bits(gb, 8);
h->transfer_characteristics = get_bits(gb, 8);
h->matrix_coeffs = get_bits(gb, 8);
}
h->blending_mode_id = get_bits(gb, 2);
h->log2_scale_factor = get_bits(gb, 4);
for (int c = 0; c < 3; c++)
h->comp_model_present_flag[c] = get_bits1(gb);
for (int c = 0; c < 3; c++) {
if (h->comp_model_present_flag[c]) {
h->num_intensity_intervals[c] = get_bits(gb, 8) + 1;
h->num_model_values[c] = get_bits(gb, 3) + 1;
if (h->num_model_values[c] > 6)
return AVERROR_INVALIDDATA;
for (int i = 0; i < h->num_intensity_intervals[c]; i++) {
h->intensity_interval_lower_bound[c][i] = get_bits(gb, 8);
h->intensity_interval_upper_bound[c][i] = get_bits(gb, 8);
for (int j = 0; j < h->num_model_values[c]; j++)
h->comp_model_value[c][i][j] = get_se_golomb_long(gb);
}
}
}
if (IS_HEVC(codec_id))
h->persistence_flag = get_bits1(gb);
else
h->repetition_period = get_ue_golomb_long(gb);
h->present = 1;
}
return 0;
}
int ff_h2645_sei_message_decode(H2645SEI *h, enum SEIType type,
enum AVCodecID codec_id, GetBitContext *gb,
GetByteContext *gbyte, void *logctx)
{
switch (type) {
case SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35:
return decode_registered_user_data(h, gbyte, codec_id, logctx);
case SEI_TYPE_USER_DATA_UNREGISTERED:
return decode_unregistered_user_data(&h->unregistered, gbyte, codec_id);
case SEI_TYPE_DISPLAY_ORIENTATION:
return decode_display_orientation(&h->display_orientation, gb);
case SEI_TYPE_FILM_GRAIN_CHARACTERISTICS:
return decode_film_grain_characteristics(&h->film_grain_characteristics, codec_id, gb);
case SEI_TYPE_FRAME_PACKING_ARRANGEMENT:
return decode_frame_packing_arrangement(&h->frame_packing, gb, codec_id);
case SEI_TYPE_ALTERNATIVE_TRANSFER_CHARACTERISTICS:
return decode_alternative_transfer(&h->alternative_transfer, gbyte);
case SEI_TYPE_AMBIENT_VIEWING_ENVIRONMENT:
return decode_ambient_viewing_environment(&h->ambient_viewing_environment,
gbyte);
default:
return FF_H2645_SEI_MESSAGE_UNHANDLED;
}
}
int ff_h2645_sei_ctx_replace(H2645SEI *dst, const H2645SEI *src)
{
int ret = av_buffer_replace(&dst->a53_caption.buf_ref,
src->a53_caption.buf_ref);
if (ret < 0)
return ret;
for (unsigned i = 0; i < dst->unregistered.nb_buf_ref; i++)
av_buffer_unref(&dst->unregistered.buf_ref[i]);
dst->unregistered.nb_buf_ref = 0;
if (src->unregistered.nb_buf_ref) {
ret = av_reallocp_array(&dst->unregistered.buf_ref,
src->unregistered.nb_buf_ref,
sizeof(*dst->unregistered.buf_ref));
if (ret < 0)
return ret;
for (unsigned i = 0; i < src->unregistered.nb_buf_ref; i++) {
dst->unregistered.buf_ref[i] = av_buffer_ref(src->unregistered.buf_ref[i]);
if (!dst->unregistered.buf_ref[i])
return AVERROR(ENOMEM);
dst->unregistered.nb_buf_ref++;
}
}
return 0;
}
static int is_frame_packing_type_valid(SEIFpaType type, enum AVCodecID codec_id)
{
if (IS_H264(codec_id))
return type <= SEI_FPA_H264_TYPE_2D &&
type >= SEI_FPA_H264_TYPE_CHECKERBOARD;
else
return type <= SEI_FPA_TYPE_INTERLEAVE_TEMPORAL &&
type >= SEI_FPA_TYPE_SIDE_BY_SIDE;
}
int ff_h2645_sei_to_frame(AVFrame *frame, H2645SEI *sei,
enum AVCodecID codec_id,
AVCodecContext *avctx, const H2645VUI *vui,
unsigned bit_depth_luma, unsigned bit_depth_chroma,
int seed)
{
H2645SEIFramePacking *fp = &sei->frame_packing;
if (fp->present &&
is_frame_packing_type_valid(fp->arrangement_type, codec_id) &&
fp->content_interpretation_type > 0 &&
fp->content_interpretation_type < 3) {
AVStereo3D *stereo = av_stereo3d_create_side_data(frame);
if (!stereo)
return AVERROR(ENOMEM);
switch (fp->arrangement_type) {
#if CONFIG_H264_SEI
case SEI_FPA_H264_TYPE_CHECKERBOARD:
stereo->type = AV_STEREO3D_CHECKERBOARD;
break;
case SEI_FPA_H264_TYPE_INTERLEAVE_COLUMN:
stereo->type = AV_STEREO3D_COLUMNS;
break;
case SEI_FPA_H264_TYPE_INTERLEAVE_ROW:
stereo->type = AV_STEREO3D_LINES;
break;
#endif
case SEI_FPA_TYPE_SIDE_BY_SIDE:
if (fp->quincunx_sampling_flag)
stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
else
stereo->type = AV_STEREO3D_SIDEBYSIDE;
break;
case SEI_FPA_TYPE_TOP_BOTTOM:
stereo->type = AV_STEREO3D_TOPBOTTOM;
break;
case SEI_FPA_TYPE_INTERLEAVE_TEMPORAL:
stereo->type = AV_STEREO3D_FRAMESEQUENCE;
break;
#if CONFIG_H264_SEI
case SEI_FPA_H264_TYPE_2D:
stereo->type = AV_STEREO3D_2D;
break;
#endif
}
if (fp->content_interpretation_type == 2)
stereo->flags = AV_STEREO3D_FLAG_INVERT;
if (fp->arrangement_type == SEI_FPA_TYPE_INTERLEAVE_TEMPORAL) {
if (fp->current_frame_is_frame0_flag)
stereo->view = AV_STEREO3D_VIEW_LEFT;
else
stereo->view = AV_STEREO3D_VIEW_RIGHT;
}
}
if (sei->display_orientation.present &&
(sei->display_orientation.anticlockwise_rotation ||
sei->display_orientation.hflip ||
sei->display_orientation.vflip)) {
H2645SEIDisplayOrientation *o = &sei->display_orientation;
double angle = o->anticlockwise_rotation * 360 / (double) (1 << 16);
AVFrameSideData *rotation = av_frame_new_side_data(frame,
AV_FRAME_DATA_DISPLAYMATRIX,
sizeof(int32_t) * 9);
if (!rotation)
return AVERROR(ENOMEM);
/* av_display_rotation_set() expects the angle in the clockwise
* direction, hence the first minus.
* The below code applies the flips after the rotation, yet
* the H.2645 specs require flipping to be applied first.
* Because of R O(phi) = O(-phi) R (where R is flipping around
* an arbitatry axis and O(phi) is the proper rotation by phi)
* we can create display matrices as desired by negating
* the degree once for every flip applied. */
angle = -angle * (1 - 2 * !!o->hflip) * (1 - 2 * !!o->vflip);
av_display_rotation_set((int32_t *)rotation->data, angle);
av_display_matrix_flip((int32_t *)rotation->data,
o->hflip, o->vflip);
}
if (sei->a53_caption.buf_ref) {
H2645SEIA53Caption *a53 = &sei->a53_caption;
AVFrameSideData *sd = av_frame_new_side_data_from_buf(frame, AV_FRAME_DATA_A53_CC, a53->buf_ref);
if (!sd)
av_buffer_unref(&a53->buf_ref);
a53->buf_ref = NULL;
if (avctx)
avctx->properties |= FF_CODEC_PROPERTY_CLOSED_CAPTIONS;
}
for (unsigned i = 0; i < sei->unregistered.nb_buf_ref; i++) {
H2645SEIUnregistered *unreg = &sei->unregistered;
if (unreg->buf_ref[i]) {
AVFrameSideData *sd = av_frame_new_side_data_from_buf(frame,
AV_FRAME_DATA_SEI_UNREGISTERED,
unreg->buf_ref[i]);
if (!sd)
av_buffer_unref(&unreg->buf_ref[i]);
unreg->buf_ref[i] = NULL;
}
}
sei->unregistered.nb_buf_ref = 0;
if (sei->afd.present) {
AVFrameSideData *sd = av_frame_new_side_data(frame, AV_FRAME_DATA_AFD,
sizeof(uint8_t));
if (sd) {
*sd->data = sei->afd.active_format_description;
sei->afd.present = 0;
}
}
if (sei->film_grain_characteristics.present) {
H2645SEIFilmGrainCharacteristics *fgc = &sei->film_grain_characteristics;
AVFilmGrainParams *fgp = av_film_grain_params_create_side_data(frame);
AVFilmGrainH274Params *h274;
if (!fgp)
return AVERROR(ENOMEM);
fgp->type = AV_FILM_GRAIN_PARAMS_H274;
h274 = &fgp->codec.h274;
fgp->seed = seed;
h274->model_id = fgc->model_id;
if (fgc->separate_colour_description_present_flag) {
h274->bit_depth_luma = fgc->bit_depth_luma;
h274->bit_depth_chroma = fgc->bit_depth_chroma;
h274->color_range = fgc->full_range + 1;
h274->color_primaries = fgc->color_primaries;
h274->color_trc = fgc->transfer_characteristics;
h274->color_space = fgc->matrix_coeffs;
} else {
h274->bit_depth_luma = bit_depth_luma;
h274->bit_depth_chroma = bit_depth_chroma;
if (vui->video_signal_type_present_flag)
h274->color_range = vui->video_full_range_flag + 1;
else
h274->color_range = AVCOL_RANGE_UNSPECIFIED;
if (vui->colour_description_present_flag) {
h274->color_primaries = vui->colour_primaries;
h274->color_trc = vui->transfer_characteristics;
h274->color_space = vui->matrix_coeffs;
} else {
h274->color_primaries = AVCOL_PRI_UNSPECIFIED;
h274->color_trc = AVCOL_TRC_UNSPECIFIED;
h274->color_space = AVCOL_SPC_UNSPECIFIED;
}
}
h274->blending_mode_id = fgc->blending_mode_id;
h274->log2_scale_factor = fgc->log2_scale_factor;
memcpy(&h274->component_model_present, &fgc->comp_model_present_flag,
sizeof(h274->component_model_present));
memcpy(&h274->num_intensity_intervals, &fgc->num_intensity_intervals,
sizeof(h274->num_intensity_intervals));
memcpy(&h274->num_model_values, &fgc->num_model_values,
sizeof(h274->num_model_values));
memcpy(&h274->intensity_interval_lower_bound, &fgc->intensity_interval_lower_bound,
sizeof(h274->intensity_interval_lower_bound));
memcpy(&h274->intensity_interval_upper_bound, &fgc->intensity_interval_upper_bound,
sizeof(h274->intensity_interval_upper_bound));
memcpy(&h274->comp_model_value, &fgc->comp_model_value,
sizeof(h274->comp_model_value));
if (IS_H264(codec_id))
fgc->present = !!fgc->repetition_period;
else
fgc->present = fgc->persistence_flag;
if (avctx)
avctx->properties |= FF_CODEC_PROPERTY_FILM_GRAIN;
}
if (sei->ambient_viewing_environment.present) {
H2645SEIAmbientViewingEnvironment *env =
&sei->ambient_viewing_environment;
AVAmbientViewingEnvironment *dst_env =
av_ambient_viewing_environment_create_side_data(frame);
if (!dst_env)
return AVERROR(ENOMEM);
dst_env->ambient_illuminance = av_make_q(env->ambient_illuminance, 10000);
dst_env->ambient_light_x = av_make_q(env->ambient_light_x, 50000);
dst_env->ambient_light_y = av_make_q(env->ambient_light_y, 50000);
}
return 0;
}
void ff_h2645_sei_reset(H2645SEI *s)
{
av_buffer_unref(&s->a53_caption.buf_ref);
for (unsigned i = 0; i < s->unregistered.nb_buf_ref; i++)
av_buffer_unref(&s->unregistered.buf_ref[i]);
s->unregistered.nb_buf_ref = 0;
av_freep(&s->unregistered.buf_ref);
av_buffer_unref(&s->dynamic_hdr_plus.info);
av_buffer_unref(&s->dynamic_hdr_vivid.info);
s->ambient_viewing_environment.present = 0;
}
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