From: Ridley Combs via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Cc: Ridley Combs <rcombs@rcombs.me>
Subject: Re: [FFmpeg-devel] [PATCH v1 2/5] avformat: add muxer support for H266/VVC
Date: Thu, 18 Jan 2024 02:43:24 -0800
Message-ID: <F856F89B-457E-4F8C-9336-C34B7785EB2A@rcombs.me> (raw)
In-Reply-To: <724da457-774e-4985-a3c1-9708454d6290@gmail.com>
> On Jan 4, 2024, at 16:31, James Almer <jamrial@gmail.com> wrote:
>
> On 11/3/2023 6:57 AM, Thomas Siedel wrote:
>> Add muxer for vvcc byte stream format.
>> Add AV_CODEC_ID_VVC to ff_mp4_obj_type.
>> Add AV_CODEC_ID_VVC to ISO Media codec (VvcConfigurationBox vvi1,
>> vvc1 defined in ISO/IEC 14496-15:2021).
>> Add VvcConfigurationBox vvcC which extends FullBox type in
>> ISO/IEC 14496-15:2021.
>> Add ff_vvc_muxer to RAW muxers.
>> Signed-off-by: Thomas Siedel <thomas.ff@spin-digital.com>
>> ---
>> libavformat/Makefile | 6 +-
>> libavformat/isom.c | 1 +
>> libavformat/isom_tags.c | 3 +
>> libavformat/mov.c | 6 +
>> libavformat/movenc.c | 41 +-
>> libavformat/vvc.c | 998 ++++++++++++++++++++++++++++++++++++++++
>> libavformat/vvc.h | 99 ++++
>> 7 files changed, 1150 insertions(+), 4 deletions(-)
>> create mode 100644 libavformat/vvc.c
>> create mode 100644 libavformat/vvc.h
>> diff --git a/libavformat/Makefile b/libavformat/Makefile
>> index 329055ccfd..595f6bdf08 100644
>> --- a/libavformat/Makefile
>> +++ b/libavformat/Makefile
>> @@ -341,7 +341,7 @@ OBJS-$(CONFIG_MATROSKA_DEMUXER) += matroskadec.o matroska.o \
>> oggparsevorbis.o vorbiscomment.o \
>> qtpalette.o replaygain.o dovi_isom.o
>> OBJS-$(CONFIG_MATROSKA_MUXER) += matroskaenc.o matroska.o \
>> - av1.o avc.o hevc.o \
>> + av1.o avc.o hevc.o vvc.o\
>> flacenc_header.o avlanguage.o \
>> vorbiscomment.o wv.o dovi_isom.o
>> OBJS-$(CONFIG_MCA_DEMUXER) += mca.o
>> @@ -363,7 +363,7 @@ OBJS-$(CONFIG_MODS_DEMUXER) += mods.o
>> OBJS-$(CONFIG_MOFLEX_DEMUXER) += moflex.o
>> OBJS-$(CONFIG_MOV_DEMUXER) += mov.o mov_chan.o mov_esds.o \
>> qtpalette.o replaygain.o dovi_isom.o
>> -OBJS-$(CONFIG_MOV_MUXER) += movenc.o av1.o avc.o hevc.o vpcc.o \
>> +OBJS-$(CONFIG_MOV_MUXER) += movenc.o av1.o avc.o hevc.o vvc.o vpcc.o \
>> movenchint.o mov_chan.o rtp.o \
>> movenccenc.o movenc_ttml.o rawutils.o \
>> dovi_isom.o evc.o
>> @@ -516,7 +516,7 @@ OBJS-$(CONFIG_RTP_MUXER) += rtp.o \
>> rtpenc_vp8.o \
>> rtpenc_vp9.o \
>> rtpenc_xiph.o \
>> - avc.o hevc.o
>> + avc.o hevc.o vvc.o
>> OBJS-$(CONFIG_RTSP_DEMUXER) += rtsp.o rtspdec.o httpauth.o \
>> urldecode.o
>> OBJS-$(CONFIG_RTSP_MUXER) += rtsp.o rtspenc.o httpauth.o \
>> diff --git a/libavformat/isom.c b/libavformat/isom.c
>> index 6d019881e5..9fbccd4437 100644
>> --- a/libavformat/isom.c
>> +++ b/libavformat/isom.c
>> @@ -36,6 +36,7 @@ const AVCodecTag ff_mp4_obj_type[] = {
>> { AV_CODEC_ID_MPEG4 , 0x20 },
>> { AV_CODEC_ID_H264 , 0x21 },
>> { AV_CODEC_ID_HEVC , 0x23 },
>> + { AV_CODEC_ID_VVC , 0x33 },
>> { AV_CODEC_ID_AAC , 0x40 },
>> { AV_CODEC_ID_MP4ALS , 0x40 }, /* 14496-3 ALS */
>> { AV_CODEC_ID_MPEG2VIDEO , 0x61 }, /* MPEG-2 Main */
>> diff --git a/libavformat/isom_tags.c b/libavformat/isom_tags.c
>> index a575b7c160..705811e950 100644
>> --- a/libavformat/isom_tags.c
>> +++ b/libavformat/isom_tags.c
>> @@ -123,6 +123,9 @@ const AVCodecTag ff_codec_movvideo_tags[] = {
>> { AV_CODEC_ID_HEVC, MKTAG('d', 'v', 'h', 'e') }, /* HEVC-based Dolby Vision derived from hev1 */
>> /* dvh1 is handled within mov.c */
>> + { AV_CODEC_ID_VVC, MKTAG('v', 'v', 'i', '1') }, /* VVC/H.266 which indicates parameter sets may be in ES */
>> + { AV_CODEC_ID_VVC, MKTAG('v', 'v', 'c', '1') }, /* VVC/H.266 which indicates parameter shall not be in ES */
>> +
>> { AV_CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */
>> { AV_CODEC_ID_H264, MKTAG('a', 'v', 'c', '2') },
>> { AV_CODEC_ID_H264, MKTAG('a', 'v', 'c', '3') },
>> diff --git a/libavformat/mov.c b/libavformat/mov.c
>> index e8efccf6eb..11b43ac135 100644
>> --- a/libavformat/mov.c
>> +++ b/libavformat/mov.c
>> @@ -2117,6 +2117,11 @@ static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
>> if ((uint64_t)atom.size > (1<<30))
>> return AVERROR_INVALIDDATA;
>> + if (atom.type == MKTAG('v','v','c','C')) {
>> + avio_rb32(pb);
>
> avio_skip(pb, 4);
>
>> + atom.size -= 4;
>> + }
>> +
>> if (atom.size >= 10) {
>> // Broken files created by legacy versions of libavformat will
>> // wrap a whole fiel atom inside of a glbl atom.
>> @@ -7921,6 +7926,7 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
>> { MKTAG('s','g','p','d'), mov_read_sgpd },
>> { MKTAG('s','b','g','p'), mov_read_sbgp },
>> { MKTAG('h','v','c','C'), mov_read_glbl },
>> +{ MKTAG('v','v','c','C'), mov_read_glbl },
>> { MKTAG('u','u','i','d'), mov_read_uuid },
>> { MKTAG('C','i','n', 0x8e), mov_read_targa_y216 },
>> { MKTAG('f','r','e','e'), mov_read_free },
>> diff --git a/libavformat/movenc.c b/libavformat/movenc.c
>> index e39f1ac987..093a04d0c2 100644
>> --- a/libavformat/movenc.c
>> +++ b/libavformat/movenc.c
>> @@ -68,6 +68,7 @@
>> #include "ttmlenc.h"
>> #include "version.h"
>> #include "vpcc.h"
>> +#include "vvc.h"
>> static const AVOption options[] = {
>> { "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
>> @@ -1473,6 +1474,23 @@ static int mov_write_evcc_tag(AVIOContext *pb, MOVTrack *track)
>> return update_size(pb, pos);
>> }
>> +static int mov_write_vvcc_tag(AVIOContext *pb, MOVTrack *track)
>> +{
>> + int64_t pos = avio_tell(pb);
>> +
>> + avio_wb32(pb, 0);
>> + ffio_wfourcc(pb, "vvcC");
>> +
>> + avio_w8 (pb, 0); /* version */
>> + avio_wb24(pb, 0); /* flags */
>
> Is it really a fullbox? I find it odd considering h264 and h265 don't.
It is; no idea why.
>
>> +
>> + if (track->tag == MKTAG('v','v','c','1'))
>> + ff_isom_write_vvcc(pb, track->vos_data, track->vos_len, 1);
>> + else
>> + ff_isom_write_vvcc(pb, track->vos_data, track->vos_len, 0);
>> + return update_size(pb, pos);
>> +}
>> +
>> /* also used by all avid codecs (dv, imx, meridien) and their variants */
>> static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
>> {
>> @@ -2382,6 +2400,8 @@ static int mov_write_video_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex
>> avid = 1;
>> } else if (track->par->codec_id == AV_CODEC_ID_HEVC)
>> mov_write_hvcc_tag(pb, track);
>> + else if (track->par->codec_id == AV_CODEC_ID_VVC)
>> + mov_write_vvcc_tag(pb, track);
>> else if (track->par->codec_id == AV_CODEC_ID_H264 && !TAG_IS_AVCI(track->tag)) {
>> mov_write_avcc_tag(pb, track);
>> if (track->mode == MODE_IPOD)
>> @@ -6170,6 +6190,7 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
>> if ((par->codec_id == AV_CODEC_ID_DNXHD ||
>> par->codec_id == AV_CODEC_ID_H264 ||
>> par->codec_id == AV_CODEC_ID_HEVC ||
>> + par->codec_id == AV_CODEC_ID_VVC ||
>> par->codec_id == AV_CODEC_ID_VP9 ||
>> par->codec_id == AV_CODEC_ID_EVC ||
>> par->codec_id == AV_CODEC_ID_TRUEHD) && !trk->vos_len &&
>> @@ -6235,6 +6256,18 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
>> size = ff_hevc_annexb2mp4(pb, pkt->data, pkt->size, 0, NULL);
>> }
>> }
>> + } else if (par->codec_id == AV_CODEC_ID_VVC && trk->vos_len > 6 &&
>> + (AV_RB24(trk->vos_data) == 1 || AV_RB32(trk->vos_data) == 1)) {
>> + /* extradata is Annex B, assume the bitstream is too and convert it */
>> + if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
>> + ret = ff_h266_annexb2mp4_buf(pkt->data, &reformatted_data,
>> + &size, 0, NULL);
>> + if (ret < 0)
>> + return ret;
>> + avio_write(pb, reformatted_data, size);
>> + } else {
>> + size = ff_h266_annexb2mp4(pb, pkt->data, pkt->size, 0, NULL);
>> + }
>> } else if (par->codec_id == AV_CODEC_ID_AV1) {
>> if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
>> ret = ff_av1_filter_obus_buf(pkt->data, &reformatted_data,
>> @@ -6281,6 +6314,9 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
>> } else if(par->codec_id == AV_CODEC_ID_HEVC && par->extradata_size > 21) {
>> int nal_size_length = (par->extradata[21] & 0x3) + 1;
>> ret = ff_mov_cenc_avc_write_nal_units(s, &trk->cenc, nal_size_length, pb, pkt->data, size);
>> + } else if(par->codec_id == AV_CODEC_ID_VVC && par->extradata_size > 21) {
>> + int nal_size_length = (par->extradata[21] & 0x3) + 1;
>
> Is this really at the exact same offset as in hevc?
>
>> + ret = ff_mov_cenc_avc_write_nal_units(s, &trk->cenc, nal_size_length, pb, pkt->data, size);
>> } else {
>> ret = ff_mov_cenc_write_packet(&trk->cenc, pb, pkt->data, size);
>> }
>> @@ -7363,7 +7399,8 @@ static int mov_init(AVFormatContext *s)
>> if (mov->encryption_scheme == MOV_ENC_CENC_AES_CTR) {
>> ret = ff_mov_cenc_init(&track->cenc, mov->encryption_key,
>> - (track->par->codec_id == AV_CODEC_ID_H264 || track->par->codec_id == AV_CODEC_ID_HEVC),
>> + (track->par->codec_id == AV_CODEC_ID_H264 || track->par->codec_id == AV_CODEC_ID_HEVC ||
>> + track->par->codec_id == AV_CODEC_ID_VVC),
>> s->flags & AVFMT_FLAG_BITEXACT);
>> if (ret)
>> return ret;
>> @@ -7832,6 +7869,8 @@ static const AVCodecTag codec_mp4_tags[] = {
>> { AV_CODEC_ID_HEVC, MKTAG('h', 'e', 'v', '1') },
>> { AV_CODEC_ID_HEVC, MKTAG('h', 'v', 'c', '1') },
>> { AV_CODEC_ID_HEVC, MKTAG('d', 'v', 'h', '1') },
>> + { AV_CODEC_ID_VVC, MKTAG('v', 'v', 'c', '1') },
>> + { AV_CODEC_ID_VVC, MKTAG('v', 'v', 'i', '1') },
>> { AV_CODEC_ID_EVC, MKTAG('e', 'v', 'c', '1') },
>> { AV_CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', '4', 'v') },
>> { AV_CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', '4', 'v') },
>> diff --git a/libavformat/vvc.c b/libavformat/vvc.c
>> new file mode 100644
>> index 0000000000..8ec0136862
>> --- /dev/null
>> +++ b/libavformat/vvc.c
>> @@ -0,0 +1,998 @@
>> +/*
>> + * H.266/VVC helper functions for muxers
>> + *
>> + * Copyright (C) 2022, Thomas Siedel
>> + *
>> + * 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 "libavcodec/get_bits.h"
>> +#include "libavcodec/golomb.h"
>> +#include "libavcodec/vvc.h"
>> +#include "libavutil/intreadwrite.h"
>> +#include "avc.h"
>> +#include "avio.h"
>> +#include "avio_internal.h"
>> +#include "vvc.h"
>> +
>> +typedef struct VVCCNALUnitArray {
>> + uint8_t array_completeness;
>> + uint8_t NAL_unit_type;
>> + uint16_t num_nalus;
>> + uint16_t *nal_unit_length;
>> + uint8_t **nal_unit;
>> +} VVCCNALUnitArray;
>> +
>> +typedef struct VVCPTLRecord {
>> + uint8_t num_bytes_constraint_info;
>> + uint8_t general_profile_idc;
>> + uint8_t general_tier_flag;
>> + uint8_t general_level_idc;
>> + uint8_t ptl_frame_only_constraint_flag;
>> + uint8_t ptl_multilayer_enabled_flag;
>> + uint8_t general_constraint_info[9];
>> + uint8_t *ptl_sublayer_level_present_flag;
>> + uint8_t *sublayer_level_idc;
>> + uint8_t ptl_num_sub_profiles;
>> + uint32_t *general_sub_profile_idc;
>> +} VVCPTLRecord;
>> +
>> +typedef struct VVCDecoderConfigurationRecord {
>> + uint8_t lengthSizeMinusOne;
>> + uint8_t ptl_present_flag;
>> + uint16_t ols_idx;
>> + uint8_t num_sublayers;
>> + uint8_t constant_frame_rate;
>> + uint8_t chroma_format_idc;
>> + uint8_t bit_depth_minus8;
>> + VVCPTLRecord ptl;
>> + uint16_t max_picture_width;
>> + uint16_t max_picture_height;
>> + uint16_t avg_frame_rate;
>> + uint8_t num_of_arrays;
>> + VVCCNALUnitArray *array;
>> +} VVCDecoderConfigurationRecord;
>> +
>> +typedef struct VVCCProfileTierLevel {
>> + uint8_t profile_idc;
>> + uint8_t tier_flag;
>> + uint8_t general_level_idc;
>> + uint8_t ptl_frame_only_constraint_flag;
>> + uint8_t ptl_multilayer_enabled_flag;
>> +// general_constraint_info
>> + uint8_t gci_present_flag;
>> + uint8_t gci_general_constraints[9];
>> + uint8_t gci_num_reserved_bits;
>> +// end general_constraint_info
>> + uint8_t *ptl_sublayer_level_present_flag;
>> + uint8_t *sublayer_level_idc;
>> + uint8_t ptl_num_sub_profiles;
>> + uint32_t *general_sub_profile_idc;
>> +} VVCCProfileTierLevel;
>> +
>> +static void vvcc_update_ptl(VVCDecoderConfigurationRecord *vvcc,
>> + VVCCProfileTierLevel *ptl)
>> +{
>> + /*
>> + * The level indication general_level_idc must indicate a level of
>> + * capability equal to or greater than the highest level indicated for the
>> + * highest tier in all the parameter sets.
>> + */
>> + if (vvcc->ptl.general_tier_flag < ptl->tier_flag)
>> + vvcc->ptl.general_level_idc = ptl->general_level_idc;
>> + else
>> + vvcc->ptl.general_level_idc =
>> + FFMAX(vvcc->ptl.general_level_idc, ptl->general_level_idc);
>> +
>> + /*
>> + * The tier indication general_tier_flag must indicate a tier equal to or
>> + * greater than the highest tier indicated in all the parameter sets.
>> + */
>> + vvcc->ptl.general_tier_flag =
>> + FFMAX(vvcc->ptl.general_tier_flag, ptl->tier_flag);
>> +
>> + /*
>> + * The profile indication general_profile_idc must indicate a profile to
>> + * which the stream associated with this configuration record conforms.
>> + *
>> + * If the sequence parameter sets are marked with different profiles, then
>> + * the stream may need examination to determine which profile, if any, the
>> + * entire stream conforms to. If the entire stream is not examined, or the
>> + * examination reveals that there is no profile to which the entire stream
>> + * conforms, then the entire stream must be split into two or more
>> + * sub-streams with separate configuration records in which these rules can
>> + * be met.
>> + *
>> + * Note: set the profile to the highest value for the sake of simplicity.
>> + */
>> + vvcc->ptl.general_profile_idc =
>> + FFMAX(vvcc->ptl.general_profile_idc, ptl->profile_idc);
>> +
>> + /*
>> + * Each bit in flags may only be set if all
>> + * the parameter sets set that bit.
>> + */
>> + vvcc->ptl.ptl_frame_only_constraint_flag &=
>> + ptl->ptl_frame_only_constraint_flag;
>> + vvcc->ptl.ptl_multilayer_enabled_flag &= ptl->ptl_multilayer_enabled_flag;
>> +
>> + /*
>> + * Constraints Info
>> + */
>> + if (ptl->gci_present_flag) {
>> + vvcc->ptl.num_bytes_constraint_info = 9;
>> + memcpy(&vvcc->ptl.general_constraint_info[0],
>> + &ptl->gci_general_constraints[0], sizeof(uint8_t) * 9);
>> +
>> + } else {
>> + vvcc->ptl.num_bytes_constraint_info = 1;
>> + memset(&vvcc->ptl.general_constraint_info[0], 0, sizeof(uint8_t) * 9);
>> + }
>> +
>> + /*
>> + * Each bit in flags may only be set if one of
>> + * the parameter sets set that bit.
>> + */
>> + vvcc->ptl.ptl_sublayer_level_present_flag =
>> + (uint8_t *) malloc(sizeof(uint8_t) * vvcc->num_sublayers - 1);
>> + vvcc->ptl.sublayer_level_idc =
>> + (uint8_t *) malloc(sizeof(uint8_t) * vvcc->num_sublayers - 1);
>> +
>> + memset(vvcc->ptl.ptl_sublayer_level_present_flag, 0,
>> + sizeof(uint8_t) * vvcc->num_sublayers - 1);
>> + memset(vvcc->ptl.sublayer_level_idc, 0,
>> + sizeof(uint8_t) * vvcc->num_sublayers - 1);
>> +
>> + for (int i = vvcc->num_sublayers - 2; i >= 0; i--) {
>> + vvcc->ptl.ptl_sublayer_level_present_flag[i] |=
>> + ptl->ptl_sublayer_level_present_flag[i];
>> + if (vvcc->ptl.ptl_sublayer_level_present_flag[i]) {
>> + vvcc->ptl.sublayer_level_idc[i] =
>> + FFMAX(vvcc->ptl.sublayer_level_idc[i],
>> + ptl->sublayer_level_idc[i]);
>> + } else {
>> + if (i == vvcc->num_sublayers - 1) {
>> + vvcc->ptl.sublayer_level_idc[i] = vvcc->ptl.general_level_idc;
>> + } else {
>> + vvcc->ptl.sublayer_level_idc[i] =
>> + vvcc->ptl.sublayer_level_idc[i + 1];
>> + }
>> + }
>> + }
>> +
>> + vvcc->ptl.ptl_num_sub_profiles =
>> + FFMAX(vvcc->ptl.ptl_num_sub_profiles, ptl->ptl_num_sub_profiles);
>> + if (vvcc->ptl.ptl_num_sub_profiles) {
>> + vvcc->ptl.general_sub_profile_idc =
>> + (uint32_t *) malloc(sizeof(uint32_t) *
>> + vvcc->ptl.ptl_num_sub_profiles);
>> + for (int i = 0; i < vvcc->ptl.ptl_num_sub_profiles; i++) {
>> + vvcc->ptl.general_sub_profile_idc[i] =
>> + ptl->general_sub_profile_idc[i];
>> + }
>> + } else {
>> + vvcc->ptl.general_sub_profile_idc =
>> + (uint32_t *) malloc(sizeof(uint32_t));
>> + }
>> +}
>> +
>> +static void vvcc_parse_ptl(GetBitContext *gb,
>> + VVCDecoderConfigurationRecord *vvcc,
>> + unsigned int profileTierPresentFlag,
>> + unsigned int max_sub_layers_minus1)
>> +{
>> + VVCCProfileTierLevel general_ptl;
>> + int j;
>> +
>> + if (profileTierPresentFlag) {
>> + general_ptl.profile_idc = get_bits(gb, 7);
>> + general_ptl.tier_flag = get_bits1(gb);
>> + }
>> + general_ptl.general_level_idc = get_bits(gb, 8);
>> +
>> + general_ptl.ptl_frame_only_constraint_flag = get_bits1(gb);
>> + general_ptl.ptl_multilayer_enabled_flag = get_bits1(gb);
>> + if (profileTierPresentFlag) { // parse constraint info
>> + general_ptl.gci_present_flag = get_bits1(gb);
>> + if (general_ptl.gci_present_flag) {
>> + for (j = 0; j < 8; j++)
>> + general_ptl.gci_general_constraints[j] = get_bits(gb, 8);
>> + general_ptl.gci_general_constraints[8] = 0;
>> + general_ptl.gci_general_constraints[8] = get_bits(gb, 7);
>> +
>> + general_ptl.gci_num_reserved_bits = get_bits(gb, 8);
>> + skip_bits(gb, general_ptl.gci_num_reserved_bits);
>> + }
>> + while (gb->index % 8 != 0)
>> + skip_bits1(gb);
>> + }
>> +
>> + general_ptl.ptl_sublayer_level_present_flag =
>> + (uint8_t *) malloc(sizeof(uint8_t) * max_sub_layers_minus1);
>> + for (int i = max_sub_layers_minus1 - 1; i >= 0; i--) {
>> + general_ptl.ptl_sublayer_level_present_flag[i] = get_bits1(gb);
>> + }
>> + while (gb->index % 8 != 0)
>> + skip_bits1(gb);
>> +
>> + general_ptl.sublayer_level_idc =
>> + (uint8_t *) malloc(sizeof(uint8_t) * max_sub_layers_minus1);
>> + for (int i = max_sub_layers_minus1 - 1; i >= 0; i--) {
>> + if (general_ptl.ptl_sublayer_level_present_flag[i])
>> + general_ptl.sublayer_level_idc[i] = get_bits(gb, 8);
>> + }
>> +
>> + if (profileTierPresentFlag) {
>> + general_ptl.ptl_num_sub_profiles = get_bits(gb, 8);
>> + if (general_ptl.ptl_num_sub_profiles) {
>> + general_ptl.general_sub_profile_idc =
>> + (uint32_t *) malloc(sizeof(uint32_t) *
>> + general_ptl.ptl_num_sub_profiles);
>> + for (int i = 0; i < general_ptl.ptl_num_sub_profiles; i++) {
>> + general_ptl.general_sub_profile_idc[i] = get_bits_long(gb, 32);
>> + }
>> + } else {
>> + general_ptl.general_sub_profile_idc =
>> + (uint32_t *) malloc(sizeof(uint32_t));
>> + }
>> + }
>> +
>> + vvcc_update_ptl(vvcc, &general_ptl);
>> +
>> + free(general_ptl.ptl_sublayer_level_present_flag);
>> + free(general_ptl.sublayer_level_idc);
>> + free(general_ptl.general_sub_profile_idc);
>> +}
>> +
>> +static int vvcc_parse_vps(GetBitContext *gb,
>> + VVCDecoderConfigurationRecord *vvcc)
>> +{
>> + unsigned int vps_max_layers_minus1;
>> + unsigned int vps_max_sub_layers_minus1;
>> + unsigned int vps_default_ptl_dpb_hrd_max_tid_flag;
>> + unsigned int vps_all_independant_layer_flag;
>> + unsigned int vps_each_layer_is_an_ols_flag;
>> + unsigned int vps_ols_mode_idc;
>> +
>> + unsigned int *vps_pt_present_flag;
>> + unsigned int *vps_ptl_max_tid;
>> + unsigned int vps_num_ptls_minus1 = 0;
>> +
>> + /*
>> + * vps_video_parameter_set_id u(4)
>> + */
>> + skip_bits(gb, 4);
>> +
>> + vps_max_layers_minus1 = get_bits(gb, 6);
>> + vps_max_sub_layers_minus1 = get_bits(gb, 3);
>> +
>> + /*
>> + * numTemporalLayers greater than 1 indicates that the stream to which this
>> + * configuration record applies is temporally scalable and the contained
>> + * number of temporal layers (also referred to as temporal sub-layer or
>> + * sub-layer in ISO/IEC 23008-2) is equal to numTemporalLayers. Value 1
>> + * indicates that the stream is not temporally scalable. Value 0 indicates
>> + * that it is unknown whether the stream is temporally scalable.
>> + */
>> + vvcc->num_sublayers = FFMAX(vvcc->num_sublayers,
>> + vps_max_sub_layers_minus1 + 1);
>> +
>> + if (vps_max_layers_minus1 > 0 && vps_max_sub_layers_minus1 > 0)
>> + vps_default_ptl_dpb_hrd_max_tid_flag = get_bits1(gb);
>> + if (vps_max_layers_minus1 > 0)
>> + vps_all_independant_layer_flag = get_bits1(gb);
>> +
>> + for (int i = 0; i <= vps_max_layers_minus1; i++) {
>> + skip_bits(gb, 6); //vps_default_ptl_dpb_hrd_max_tid_flag[i]
>> + if (i > 0 && !vps_all_independant_layer_flag) {
>> + if (get_bits1(gb)) { // vps_independant_layer_flag
>> + unsigned int vps_max_tid_ref_present_flag = get_bits1(gb);
>> + for (int j = 0; j < i; j++) {
>> + if (vps_max_tid_ref_present_flag && get_bits1(gb)) // vps_direct_ref_layer_flag[i][j]
>> + skip_bits(gb, 3); // vps_max_tid_il_ref_pics_plus1
>> + }
>> + }
>> + }
>> + }
>> +
>> + if (vps_max_layers_minus1 > 0) {
>> + if (vps_all_independant_layer_flag)
>> + vps_each_layer_is_an_ols_flag = get_bits1(gb);
>> + if (vps_each_layer_is_an_ols_flag) {
>> + if (!vps_all_independant_layer_flag)
>> + vps_ols_mode_idc = get_bits(gb, 2);
>> + if (vps_ols_mode_idc == 2) {
>> + unsigned int vps_num_output_layer_sets_minus2 = get_bits(gb, 8);
>> + for (int i = 1; i <= vps_num_output_layer_sets_minus2 + 1; i++) {
>> + for (int j = 0; j <= vps_max_layers_minus1; j++) {
>> + skip_bits1(gb);
>> + }
>> + }
>> + }
>> + }
>> + vps_num_ptls_minus1 = get_bits(gb, 8);
>> + }
>> +
>> + vps_pt_present_flag =
>> + (unsigned int *) malloc(sizeof(unsigned int) *
>> + (vps_num_ptls_minus1 + 1));
>> + vps_ptl_max_tid =
>> + (unsigned int *) malloc(sizeof(unsigned int) *
>> + (vps_num_ptls_minus1 + 1));
>> + for (int i = 0; i <= vps_num_ptls_minus1; i++) {
>> + if (i > 0)
>> + vps_pt_present_flag[i] = get_bits1(gb);
>> + if (!vps_default_ptl_dpb_hrd_max_tid_flag)
>> + vps_ptl_max_tid[i] = get_bits(gb, 3);
>> + }
>> +
>> + while (gb->index % 8 != 0)
>> + skip_bits1(gb);
>> +
>> + for (int i = 0; i <= vps_num_ptls_minus1; i++) {
>> + vvcc_parse_ptl(gb, vvcc, vps_pt_present_flag[i], vps_ptl_max_tid[i]);
>> + }
>> +
>> + free(vps_pt_present_flag);
>> + free(vps_ptl_max_tid);
>> +
>> + /* nothing useful for vvcc past this point */
>> + return 0;
>> +}
>> +
>> +static int vvcc_parse_sps(GetBitContext *gb,
>> + VVCDecoderConfigurationRecord *vvcc)
>> +{
>> + unsigned int sps_max_sub_layers_minus1, log2_ctu_size_minus5;
>> + //unsigned int num_short_term_ref_pic_sets, num_delta_pocs[VVC_MAX_REF_PIC_LISTS];
>> + //unsigned int sps_chroma_format_idc;
>> + unsigned int sps_subpic_same_size_flag, sps_pic_height_max_in_luma_sample,
>> + sps_pic_width_max_in_luma_sample;
>> + unsigned int sps_independant_subpics_flag;
>> + unsigned int flag;
>> +
>> + skip_bits(gb, 8); // sps_seq_parameter_set_id && sps_video_parameter_set_id
>> + sps_max_sub_layers_minus1 = get_bits(gb, 3);
>> +
>> + /*
>> + * numTemporalLayers greater than 1 indicates that the stream to which this
>> + * configuration record applies is temporally scalable and the contained
>> + * number of temporal layers (also referred to as temporal sub-layer or
>> + * sub-layer in ISO/IEC 23008-2) is equal to numTemporalLayers. Value 1
>> + * indicates that the stream is not temporally scalable. Value 0 indicates
>> + * that it is unknown whether the stream is temporally scalable.
>> + */
>> + vvcc->num_sublayers = FFMAX(vvcc->num_sublayers,
>> + sps_max_sub_layers_minus1 + 1);
>> +
>> + vvcc->chroma_format_idc = get_bits(gb, 2);
>> + log2_ctu_size_minus5 = get_bits(gb, 2);
>> +
>> + if (get_bits1(gb)) //sps_ptl_dpb_hrd_params_present_flag
>> + vvcc_parse_ptl(gb, vvcc, 1, sps_max_sub_layers_minus1);
>> +
>> + flag = get_bits(gb, 1); //skip_bits1(gb); //sps_gdr_enabled_flag
>> + flag = get_bits(gb, 1); //sps_ref_pic_resampling_enabled_flag
>> + if (flag) { //sps_ref_pic_resampling_enabled_flag
>> + flag = get_bits(gb, 1); //skip_bits1(gb); //sps_res_change_in_clvs_allowed_flag
>> + }
>> +
>> + sps_pic_width_max_in_luma_sample = get_ue_golomb_long(gb);
>> + vvcc->max_picture_width =
>> + FFMAX(vvcc->max_picture_width, sps_pic_width_max_in_luma_sample);
>> + sps_pic_height_max_in_luma_sample = get_ue_golomb_long(gb);
>> + vvcc->max_picture_height =
>> + FFMAX(vvcc->max_picture_height, sps_pic_height_max_in_luma_sample);
>> +
>> + if (get_bits1(gb)) {
>> + get_ue_golomb_long(gb); // sps_conf_win_left_offset
>> + get_ue_golomb_long(gb); // sps_conf_win_right_offset
>> + get_ue_golomb_long(gb); // sps_conf_win_top_offset
>> + get_ue_golomb_long(gb); // sps_conf_win_bottom_offset
>> + }
>> +
>> + if (get_bits1(gb)) { // sps_subpic_info_present_flag
>> + unsigned int sps_num_subpics_minus1 = get_ue_golomb_long(gb);
>> + if (sps_num_subpics_minus1 > 0) { // sps_num_subpics_minus1
>> + sps_independant_subpics_flag = get_bits1(gb);
>> + sps_subpic_same_size_flag = get_bits1(gb);
>> + }
>> + for (int i = 0;
>> + sps_num_subpics_minus1 > 0 && i <= sps_num_subpics_minus1; i++) {
>> + if (!sps_subpic_same_size_flag || i == 0) {
>> + int len = FFMIN(log2_ctu_size_minus5 + 5, 16);
>> + if (i > 0 && sps_pic_width_max_in_luma_sample > 128)
>> + skip_bits(gb, len);
>> + if (i > 0 && sps_pic_height_max_in_luma_sample > 128)
>> + skip_bits(gb, len);
>> + if (i < sps_num_subpics_minus1
>> + && sps_pic_width_max_in_luma_sample > 128)
>> + skip_bits(gb, len);
>> + if (i < sps_num_subpics_minus1
>> + && sps_pic_height_max_in_luma_sample > 128)
>> + skip_bits(gb, len);
>> + }
>> + if (!sps_independant_subpics_flag) {
>> + skip_bits(gb, 2); // sps_subpic_treated_as_pic_flag && sps_loop_filter_across_subpic_enabled_flag
>> + }
>> + }
>> + get_ue_golomb_long(gb); // sps_subpic_id_len_minus1
>> + if (get_bits1(gb)) { // sps_subpic_id_mapping_explicitly_signalled_flag
>> + if (get_bits1(gb)) // sps_subpic_id_mapping_present_flag
>> + for (int i = 0; i <= sps_num_subpics_minus1; i++) {
>> + skip_bits1(gb); // sps_subpic_id[i]
>> + }
>> + }
>> + }
>> + vvcc->bit_depth_minus8 = get_ue_golomb_long(gb);
>> +
>> + /* nothing useful for vvcc past this point */
>> + return 0;
>> +}
>> +
>> +static int vvcc_parse_pps(GetBitContext *gb,
>> + VVCDecoderConfigurationRecord *vvcc)
>> +{
>> +
>> + // Nothing of importance to parse in PPS
>> + /* nothing useful for vvcc past this point */
>> + return 0;
>> +}
>> +
>> +static void nal_unit_parse_header(GetBitContext *gb, uint8_t *nal_type)
>> +{
>> + /*
>> + * forbidden_zero_bit u(1)
>> + * nuh_reserved_zero_bit u(1)
>> + * nuh_layer_id u(6)
>> + */
>> + skip_bits(gb, 8);
>> + *nal_type = get_bits(gb, 5);
>> +
>> + /*
>> + * nuh_temporal_id_plus1 u(3)
>> + */
>> + skip_bits(gb, 3);
>> +}
>> +
>> +static int vvcc_array_add_nal_unit(uint8_t *nal_buf, uint32_t nal_size,
>> + uint8_t nal_type, int ps_array_completeness,
>> + VVCDecoderConfigurationRecord *vvcc)
>> +{
>> + int ret;
>> + uint8_t index;
>> + uint16_t num_nalus;
>> + VVCCNALUnitArray *array;
>> +
>> + for (index = 0; index < vvcc->num_of_arrays; index++)
>> + if (vvcc->array[index].NAL_unit_type == nal_type)
>> + break;
>> +
>> + if (index >= vvcc->num_of_arrays) {
>> + uint8_t i;
>> +
>> + ret =
>> + av_reallocp_array(&vvcc->array, index + 1,
>> + sizeof(VVCCNALUnitArray));
>> + if (ret < 0)
>> + return ret;
>> +
>> + for (i = vvcc->num_of_arrays; i <= index; i++)
>> + memset(&vvcc->array[i], 0, sizeof(VVCCNALUnitArray));
>> + vvcc->num_of_arrays = index + 1;
>> + }
>> +
>> + array = &vvcc->array[index];
>> + num_nalus = array->num_nalus;
>> +
>> + ret = av_reallocp_array(&array->nal_unit, num_nalus + 1, sizeof(uint8_t *));
>> + if (ret < 0)
>> + return ret;
>> +
>> + ret =
>> + av_reallocp_array(&array->nal_unit_length, num_nalus + 1,
>> + sizeof(uint16_t));
>> + if (ret < 0)
>> + return ret;
>> +
>> + array->nal_unit[num_nalus] = nal_buf;
>> + array->nal_unit_length[num_nalus] = nal_size;
>> + array->NAL_unit_type = nal_type;
>> + array->num_nalus++;
>> +
>> + /*
>> + * When the sample entry name is 'vvc1', the following applies:
>> + * • The value of array_completeness shall be equal to 1 for arrays of SPS,
>> + * and PPS NAL units.
>> + * • If a VVC bitstream includes DCI NAL unit(s), the value of
>> + * array_completeness shall be equal to 1 for the array of DCI units.
>> + * Otherwise, NAL_unit_type shall not indicate DCI NAL units.
>> + * • If a VVC bitstream includes VPS NAL unit(s), the value of
>> + * array_completeness shall be equal to 1 for the array of VPS NAL units.
>> + * Otherwise, NAL_unit_type shall not indicate VPS NAL units.
>> + * When the value of array_completeness is equal to 1 for an array of a
>> + * particular NAL_unit_type value, NAL units of that NAL_unit_type value
>> + * cannot be updated without causing a different sample entry to be used.
>> + * When the sample entry name is 'vvi1', the value of array_completeness
>> + * of at least one of the following arrays shall be equal to 0:
>> + • The array of DCI NAL units, if present.
>> + • The array of VPS NAL units, if present.
>> + • The array of SPS NAL units
>> + • The array of PPS NAL units.
>> + */
>> + if (nal_type == VVC_VPS_NUT || nal_type == VVC_SPS_NUT ||
>> + nal_type == VVC_PPS_NUT || nal_type == VVC_DCI_NUT )
>> + array->array_completeness = ps_array_completeness;
>> +
>> + return 0;
>> +}
>> +
>> +static int vvcc_add_nal_unit(uint8_t *nal_buf, uint32_t nal_size,
>> + int ps_array_completeness,
>> + VVCDecoderConfigurationRecord *vvcc)
>> +{
>> + int ret = 0;
>> + GetBitContext gbc;
>> + uint8_t nal_type;
>> + uint8_t *rbsp_buf;
>> + uint32_t rbsp_size;
>> +
>> + rbsp_buf = ff_nal_unit_extract_rbsp(nal_buf, nal_size, &rbsp_size, 2);
>> + if (!rbsp_buf) {
>> + ret = AVERROR(ENOMEM);
>> + goto end;
>> + }
>> +
>> + ret = init_get_bits8(&gbc, rbsp_buf, rbsp_size);
>> + if (ret < 0)
>> + goto end;
>> +
>> + nal_unit_parse_header(&gbc, &nal_type);
>> +
>> + /*
>> + * Note: only 'declarative' SEI messages are allowed in
>> + * vvcc. Perhaps the SEI playload type should be checked
>> + * and non-declarative SEI messages discarded?
>> + */
>> + switch (nal_type) {
>> + case VVC_OPI_NUT:
>> + case VVC_VPS_NUT:
>> + case VVC_SPS_NUT:
>> + case VVC_PPS_NUT:
>> + case VVC_PREFIX_SEI_NUT:
>> + case VVC_SUFFIX_SEI_NUT:
>> + ret = vvcc_array_add_nal_unit(nal_buf, nal_size, nal_type,
>> + ps_array_completeness, vvcc);
>> + if (ret < 0)
>> + goto end;
>> + else if (nal_type == VVC_VPS_NUT)
>> + ret = vvcc_parse_vps(&gbc, vvcc);
>> + else if (nal_type == VVC_SPS_NUT)
>> + ret = vvcc_parse_sps(&gbc, vvcc);
>> + else if (nal_type == VVC_PPS_NUT)
>> + ret = vvcc_parse_pps(&gbc, vvcc);
>> + else if (nal_type == VVC_OPI_NUT) {
>> + // not yet supported
>> + }
>> + if (ret < 0)
>> + goto end;
>> + break;
>> + default:
>> + ret = AVERROR_INVALIDDATA;
>> + goto end;
>> + }
>> +
>> + end:
>> + av_free(rbsp_buf);
>> + return ret;
>> +}
>> +
>> +static void vvcc_init(VVCDecoderConfigurationRecord *vvcc)
>> +{
>> + memset(vvcc, 0, sizeof(VVCDecoderConfigurationRecord));
>> + vvcc->lengthSizeMinusOne = 3; // 4 bytes
>> +
>> + vvcc->ptl.num_bytes_constraint_info = 1;
>> +
>> + vvcc->ptl_present_flag = 1;
>> +}
>> +
>> +static void vvcc_close(VVCDecoderConfigurationRecord *vvcc)
>> +{
>> + uint8_t i;
>> +
>> + for (i = 0; i < vvcc->num_of_arrays; i++) {
>> + vvcc->array[i].num_nalus = 0;
>> + av_freep(&vvcc->array[i].nal_unit);
>> + av_freep(&vvcc->array[i].nal_unit_length);
>> + }
>> +
>> + free(vvcc->ptl.ptl_sublayer_level_present_flag);
>> + free(vvcc->ptl.sublayer_level_idc);
>> + free(vvcc->ptl.general_sub_profile_idc);
>> +
>> + vvcc->num_of_arrays = 0;
>> + av_freep(&vvcc->array);
>> +}
>> +
>> +static int vvcc_write(AVIOContext *pb, VVCDecoderConfigurationRecord *vvcc)
>> +{
>> + uint8_t i;
>> + uint16_t j, vps_count = 0, sps_count = 0, pps_count = 0;
>> + unsigned char *buf = NULL;
>> + /*
>> + * It's unclear how to properly compute these fields, so
>> + * let's always set them to values meaning 'unspecified'.
>> + */
>> + vvcc->avg_frame_rate = 0;
>> + vvcc->constant_frame_rate = 1;
>> +
>> + av_log(NULL, AV_LOG_TRACE,
>> + "lengthSizeMinusOne: %" PRIu8 "\n",
>> + vvcc->lengthSizeMinusOne);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "ptl_present_flag: %" PRIu8 "\n",
>> + vvcc->ptl_present_flag);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "ols_idx: %" PRIu16 "\n", vvcc->ols_idx);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "num_sublayers: %" PRIu8 "\n",
>> + vvcc->num_sublayers);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "constant_frame_rate: %" PRIu8 "\n",
>> + vvcc->constant_frame_rate);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "chroma_format_idc: %" PRIu8 "\n",
>> + vvcc->chroma_format_idc);
>> +
>> + av_log(NULL, AV_LOG_TRACE,
>> + "bit_depth_minus8: %" PRIu8 "\n",
>> + vvcc->bit_depth_minus8);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "num_bytes_constraint_info: %" PRIu8 "\n",
>> + vvcc->ptl.num_bytes_constraint_info);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "general_profile_idc: %" PRIu8 "\n",
>> + vvcc->ptl.general_profile_idc);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "general_tier_flag: %" PRIu8 "\n",
>> + vvcc->ptl.general_tier_flag);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "general_level_idc: %" PRIu8 "\n",
>> + vvcc->ptl.general_level_idc);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "ptl_frame_only_constraint_flag: %" PRIu8 "\n",
>> + vvcc->ptl.ptl_frame_only_constraint_flag);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "ptl_multilayer_enabled_flag: %" PRIu8 "\n",
>> + vvcc->ptl.ptl_multilayer_enabled_flag);
>> + for (i = 0; i < vvcc->ptl.num_bytes_constraint_info; i++) {
>> + av_log(NULL, AV_LOG_TRACE,
>> + "general_constraint_info[%d]: %" PRIu8 "\n", i,
>> + vvcc->ptl.general_constraint_info[i]);
>> + }
>> +
>> + for (i = 0; i < vvcc->num_sublayers - 1; i++) {
>> + av_log(NULL, AV_LOG_TRACE,
>> + "ptl_sublayer_level_present_flag[%" PRIu8 "]: %" PRIu8 "\n", i,
>> + vvcc->ptl.ptl_sublayer_level_present_flag[i]);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "sublayer_level_idc[%" PRIu8 "]: %" PRIu8 "\n", i,
>> + vvcc->ptl.sublayer_level_idc[i]);
>> + }
>> +
>> + av_log(NULL, AV_LOG_TRACE,
>> + "num_sub_profiles: %" PRIu8 "\n",
>> + vvcc->ptl.ptl_num_sub_profiles);
>> +
>> + for (i = 0; i < vvcc->ptl.ptl_num_sub_profiles; i++) {
>> + av_log(NULL, AV_LOG_TRACE,
>> + "general_sub_profile_idc[%" PRIu8 "]: %" PRIx32 "\n", i,
>> + vvcc->ptl.general_sub_profile_idc[i]);
>> + }
>> +
>> + av_log(NULL, AV_LOG_TRACE,
>> + "max_picture_width: %" PRIu16 "\n",
>> + vvcc->max_picture_width);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "max_picture_height: %" PRIu16 "\n",
>> + vvcc->max_picture_height);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "avg_frame_rate: %" PRIu16 "\n",
>> + vvcc->avg_frame_rate);
>> +
>> + av_log(NULL, AV_LOG_TRACE,
>> + "num_of_arrays: %" PRIu8 "\n",
>> + vvcc->num_of_arrays);
>> + for (i = 0; i < vvcc->num_of_arrays; i++) {
>> + av_log(NULL, AV_LOG_TRACE,
>> + "array_completeness[%" PRIu8 "]: %" PRIu8 "\n", i,
>> + vvcc->array[i].array_completeness);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "NAL_unit_type[%" PRIu8 "]: %" PRIu8 "\n", i,
>> + vvcc->array[i].NAL_unit_type);
>> + av_log(NULL, AV_LOG_TRACE,
>> + "num_nalus[%" PRIu8 "]: %" PRIu16 "\n", i,
>> + vvcc->array[i].num_nalus);
>> + for (j = 0; j < vvcc->array[i].num_nalus; j++)
>> + av_log(NULL, AV_LOG_TRACE,
>> + "nal_unit_length[%" PRIu8 "][%" PRIu16 "]: %"
>> + PRIu16 "\n", i, j, vvcc->array[i].nal_unit_length[j]);
>> + }
>> +
>> + /*
>> + * We need at least one of each: VPS and SPS.
>> + */
>> + for (i = 0; i < vvcc->num_of_arrays; i++)
>> + switch (vvcc->array[i].NAL_unit_type) {
>> + case VVC_VPS_NUT:
>> + vps_count += vvcc->array[i].num_nalus;
>> + break;
>> + case VVC_SPS_NUT:
>> + sps_count += vvcc->array[i].num_nalus;
>> + break;
>> + case VVC_PPS_NUT:
>> + pps_count += vvcc->array[i].num_nalus;
>> + break;
>> + default:
>> + break;
>> + }
>> +
>> + if (!sps_count || sps_count > VVC_MAX_SPS_COUNT)
>> + return AVERROR_INVALIDDATA;
>> +
>> + /* bit(5) reserved = ‘11111’b;
>> + unsigned int (2) LengthSizeMinusOne
>> + unsigned int (1) ptl_present_flag */
>> + avio_w8(pb, vvcc->lengthSizeMinusOne << 1 | vvcc->ptl_present_flag | 0xf8);
>> +
>> + if (vvcc->ptl_present_flag) {
>> + /*
>> + * unsigned int(9) ols_idx;
>> + * unsigned int(3) num_sublayers;
>> + * unsigned int(2) constant_frame_rate;
>> + * unsigned int(2) chroma_format_idc; */
>> + avio_wb16(pb,
>> + vvcc->ols_idx << 7 | vvcc->num_sublayers << 4 | vvcc->
>> + constant_frame_rate << 2 | vvcc->chroma_format_idc);
>> +
>> + /* unsigned int(3) bit_depth_minus8;
>> + bit(5) reserved = ‘11111’b; */
>> + avio_w8(pb, vvcc->bit_depth_minus8 << 5 | 0x1f);
>> +
>> + //VVCPTLRecord
>> +
>> + /* bit(2) reserved = ‘00’b;
>> + unsigned int (6) num_bytes_constraint_info */
>> + avio_w8(pb, vvcc->ptl.num_bytes_constraint_info & 0x3f);
>> +
>> + /* unsigned int (7) general_profile_idc
>> + unsigned int (1) general_tier_flag */
>> + avio_w8(pb,
>> + vvcc->ptl.general_profile_idc << 1 | vvcc->ptl.general_tier_flag);
>> +
>> + /* unsigned int (8) general_level_idc */
>> + avio_w8(pb, vvcc->ptl.general_level_idc);
>> +
>> + /*
>> + * unsigned int (1) ptl_frame_only_constraint_flag
>> + * unsigned int (1) ptl_multilayer_enabled_flag
>> + * unsigned int (8*num_bytes_constraint_info -2) general_constraint_info */
>> + buf =
>> + (unsigned char *) malloc(sizeof(unsigned char) *
>> + vvcc->ptl.num_bytes_constraint_info);
>> + *buf = vvcc->ptl.ptl_frame_only_constraint_flag << vvcc->ptl.
>> + num_bytes_constraint_info * 8 - 1 | vvcc->ptl.
>> + ptl_multilayer_enabled_flag << vvcc->ptl.num_bytes_constraint_info *
>> + 8 - 2 | *vvcc->ptl.general_constraint_info >> 2;
>> + avio_write(pb, buf, vvcc->ptl.num_bytes_constraint_info);
>> + free(buf);
>> +
>> + if (vvcc->num_sublayers > 1) {
>> + uint8_t ptl_sublayer_level_present_flags = 0;
>> + for (int i = vvcc->num_sublayers - 2; i >= 0; i--) {
>> + ptl_sublayer_level_present_flags =
>> + (ptl_sublayer_level_present_flags << 1 | vvcc->ptl.
>> + ptl_sublayer_level_present_flag[i]);
>> + }
>> + avio_w8(pb, ptl_sublayer_level_present_flags);
>> + }
>> +
>> + for (int i = vvcc->num_sublayers - 2; i >= 0; i--) {
>> + if (vvcc->ptl.ptl_sublayer_level_present_flag[i])
>> + avio_w8(pb, vvcc->ptl.sublayer_level_idc[i]);
>> + }
>> +
>> + /* unsigned int(8) num_sub_profiles; */
>> + avio_w8(pb, vvcc->ptl.ptl_num_sub_profiles);
>> +
>> + for (int j = 0; j < vvcc->ptl.ptl_num_sub_profiles; j++) {
>> + /* unsigned int(32) general_sub_profile_idc[j]; */
>> + avio_wb32(pb, vvcc->ptl.general_sub_profile_idc[j]);
>> + }
>> +
>> + //End of VvcPTLRecord
>> +
>> + /*
>> + * unsigned int(16) max_picture_width;*/
>> + avio_wb16(pb, vvcc->max_picture_width);
>> +
>> + /*
>> + * unsigned int(16) max_picture_height;*/
>> + avio_wb16(pb, vvcc->max_picture_height);
>> +
>> + /*
>> + * unsigned int(16) avg_frame_rate; */
>> + avio_wb16(pb, vvcc->avg_frame_rate);
>> + }
>> +
>> + /* unsigned int(8) num_of_arrays; */
>> + avio_w8(pb, vvcc->num_of_arrays);
>> +
>> + for (i = 0; i < vvcc->num_of_arrays; i++) {
>> + /*
>> + * bit(1) array_completeness;
>> + * unsigned int(2) reserved = 0;
>> + * unsigned int(5) NAL_unit_type;
>> + */
>> + avio_w8(pb, vvcc->array[i].array_completeness << 7 |
>> + vvcc->array[i].NAL_unit_type & 0x1f);
>> + /* unsigned int(16) num_nalus; */
>> + if (vvcc->array[i].NAL_unit_type != VVC_DCI_NUT &&
>> + vvcc->array[i].NAL_unit_type != VVC_OPI_NUT)
>> + avio_wb16(pb, vvcc->array[i].num_nalus);
>> + for (j = 0; j < vvcc->array[i].num_nalus; j++) {
>> + /* unsigned int(16) nal_unit_length; */
>> + avio_wb16(pb, vvcc->array[i].nal_unit_length[j]);
>> +
>> + /* bit(8*nal_unit_length) nal_unit; */
>> + avio_write(pb, vvcc->array[i].nal_unit[j],
>> + vvcc->array[i].nal_unit_length[j]);
>> + }
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +int ff_h266_annexb2mp4(AVIOContext *pb, const uint8_t *buf_in,
>> + int size, int filter_ps, int *ps_count)
>> +{
>> + int num_ps = 0, ret = 0;
>> + uint8_t *buf, *end, *start = NULL;
>> +
>> + if (!filter_ps) {
>> + ret = ff_avc_parse_nal_units(pb, buf_in, size);
>> + goto end;
>> + }
>> +
>> + ret = ff_avc_parse_nal_units_buf(buf_in, &start, &size);
>> + if (ret < 0)
>> + goto end;
>> +
>> + ret = 0;
>> + buf = start;
>> + end = start + size;
>> +
>> + while (end - buf > 4) {
>> + uint32_t len = FFMIN(AV_RB32(buf), end - buf - 4);
>> + uint8_t type = (buf[5] >> 3);
>> +
>> + buf += 4;
>> +
>> + switch (type) {
>> + case VVC_VPS_NUT:
>> + case VVC_SPS_NUT:
>> + case VVC_PPS_NUT:
>> + num_ps++;
>> + break;
>> + default:
>> + ret += 4 + len;
>> + avio_wb32(pb, len);
>> + avio_write(pb, buf, len);
>> + break;
>> + }
>> +
>> + buf += len;
>> + }
>> +
>> + end:
>> + av_free(start);
>> + if (ps_count)
>> + *ps_count = num_ps;
>> + return ret;
>> +}
>> +
>> +int ff_h266_annexb2mp4_buf(const uint8_t *buf_in, uint8_t **buf_out,
>> + int *size, int filter_ps, int *ps_count)
>> +{
>> + AVIOContext *pb;
>> + int ret;
>> +
>> + ret = avio_open_dyn_buf(&pb);
>> + if (ret < 0)
>> + return ret;
>> +
>> + ret = ff_h266_annexb2mp4(pb, buf_in, *size, filter_ps, ps_count);
>> + if (ret < 0) {
>> + ffio_free_dyn_buf(&pb);
>> + return ret;
>> + }
>> +
>> + *size = avio_close_dyn_buf(pb, buf_out);
>> +
>> + return 0;
>> +}
>> +
>> +int ff_isom_write_vvcc(AVIOContext *pb, const uint8_t *data,
>> + int size, int ps_array_completeness)
>> +{
>> + VVCDecoderConfigurationRecord vvcc;
>> + uint8_t *buf, *end, *start;
>> + int ret;
>> +
>> + if (size < 6) {
>> + /* We can't write a valid vvcc from the provided data */
>> + return AVERROR_INVALIDDATA;
>> + } else if (*data == 1) {
>> + /* Data is already vvcc-formatted */
>> + avio_write(pb, data, size);
>> + return 0;
>> + } else if (!(AV_RB24(data) == 1 || AV_RB32(data) == 1)) {
>> + /* Not a valid Annex B start code prefix */
>> + return AVERROR_INVALIDDATA;
>> + }
>> +
>> + ret = ff_avc_parse_nal_units_buf(data, &start, &size);
>> + if (ret < 0)
>> + return ret;
>> +
>> + vvcc_init(&vvcc);
>> +
>> + buf = start;
>> + end = start + size;
>> +
>> + while (end - buf > 4) {
>> + uint32_t len = FFMIN(AV_RB32(buf), end - buf - 4);
>> + uint8_t type = (buf[5] >> 3);
>> +
>> + buf += 4;
>> +
>> + switch (type) {
>> + case VVC_OPI_NUT:
>> + case VVC_VPS_NUT:
>> + case VVC_SPS_NUT:
>> + case VVC_PPS_NUT:
>> + case VVC_PREFIX_SEI_NUT:
>> + case VVC_SUFFIX_SEI_NUT:
>> + ret = vvcc_add_nal_unit(buf, len, ps_array_completeness, &vvcc);
>> + if (ret < 0)
>> + goto end;
>> + break;
>> + default:
>> + break;
>> + }
>> +
>> + buf += len;
>> + }
>> +
>> + ret = vvcc_write(pb, &vvcc);
>> +
>> + end:
>> + vvcc_close(&vvcc);
>> + av_free(start);
>> + return ret;
>> +}
>> diff --git a/libavformat/vvc.h b/libavformat/vvc.h
>> new file mode 100644
>> index 0000000000..f58145e4ae
>> --- /dev/null
>> +++ b/libavformat/vvc.h
>> @@ -0,0 +1,99 @@
>> +/*
>> + * H.266 / VVC helper functions for muxers
>> + *
>> + * 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
>> + */
>> +
>> +/**
>> + * @file
>> + * internal header for H.266/VVC (de)muxer utilities
>> + */
>> +
>> +#ifndef AVFORMAT_H266_H
>> +#define AVFORMAT_H266_H
>> +
>> +#include <stdint.h>
>> +#include "avio.h"
>> +
>> +/**
>> + * Writes Annex B formatted H.266/VVC NAL units to the provided AVIOContext.
>> + *
>> + * The NAL units are converted to an MP4-compatible format (start code prefixes
>> + * are replaced by 4-byte size fields, as per ISO/IEC 14496-15).
>> + *
>> + * If filter_ps is non-zero, any VVC parameter sets found in the input will be
>> + * discarded, and *ps_count will be set to the number of discarded PS NAL units.
>> + *
>> + * @param pb address of the AVIOContext where the data shall be written
>> + * @param buf_in address of the buffer holding the input data
>> + * @param size size (in bytes) of the input buffer
>> + * @param filter_ps whether to write parameter set NAL units to the output (0)
>> + * or to discard them (non-zero)
>> + * @param ps_count address of the variable where the number of discarded
>> + * parameter set NAL units shall be written, may be NULL
>> + * @return the amount (in bytes) of data written in case of success, a negative
>> + * value corresponding to an AVERROR code in case of failure
>> + */
>> +int ff_h266_annexb2mp4(AVIOContext *pb, const uint8_t *buf_in,
>> + int size, int filter_ps, int *ps_count);
>> +
>> +/**
>> + * Writes Annex B formatted H.266/VVC NAL units to a data buffer.
>> + *
>> + * The NAL units are converted to an MP4-compatible format (start code prefixes
>> + * are replaced by 4-byte size fields, as per ISO/IEC 14496-15).
>> + *
>> + * If filter_ps is non-zero, any VVC parameter sets found in the input will be
>> + * discarded, and *ps_count will be set to the number of discarded PS NAL units.
>> + *
>> + * On success, *size holds the size (in bytes) of the output data buffer.
>> + *
>> + * @param buf_in address of the buffer holding the input data
>> + * @param size address of the variable holding the size (in bytes) of the input
>> + * buffer (on input) and of the output buffer (on success)
>> + * @param buf_out on success, address of the variable holding the address of
>> + * the output buffer
>> + * @param filter_ps whether to write parameter set NAL units to the output (0)
>> + * or to discard them (non-zero)
>> + * @param ps_count address of the variable where the number of discarded
>> + * parameter set NAL units shall be written, may be NULL
>> + * @return 0 in case of success, a negative value corresponding to an AVERROR
>> + * code in case of failure
>> + * @note *buf_out will be treated as uninitialized on input and won't be freed.
>> + */
>> +int ff_h266_annexb2mp4_buf(const uint8_t *buf_in, uint8_t **buf_out,
>> + int *size, int filter_ps, int *ps_count);
>> +
>> +/**
>> + * Writes H.266/VVC extradata (parameter sets, declarative SEI NAL units) to
>> + * the provided AVIOContext.
>> + *
>> + * If the extradata is Annex B format, it gets converted to vvcC format before
>> + * writing.
>> + *
>> + * @param pb address of the AVIOContext where the vvcC shall be written
>> + * @param data address of the buffer holding the data needed to write the vvcC
>> + * @param size size (in bytes) of the data buffer
>> + * @param ps_array_completeness whether all parameter sets are in the vvcC (1)
>> + * or there may be additional parameter sets in the bitstream (0)
>> + * @return >=0 in case of success, a negative value corresponding to an AVERROR
>> + * code in case of failure
>> + */
>> +int ff_isom_write_vvcc(AVIOContext *pb, const uint8_t *data,
>> + int size, int ps_array_completeness);
>> +
>> +#endif /* AVFORMAT_H266_H */
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next prev parent reply other threads:[~2024-01-18 10:43 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-03 9:57 [FFmpeg-devel] [PATCH v1 0/5] Add support for H266/VVC encoding Thomas Siedel
2023-11-03 9:57 ` [FFmpeg-devel] [PATCH v1 1/5] avcodec: add external encoder libvvenc for H266/VVC Thomas Siedel
2023-11-03 9:57 ` [FFmpeg-devel] [PATCH v1 2/5] avformat: add muxer support " Thomas Siedel
2024-01-05 0:20 ` Nuo Mi
2024-01-26 15:17 ` Thomas Siedel
2024-01-26 15:28 ` Nuo Mi
2024-01-05 0:31 ` James Almer
2024-01-18 10:43 ` Ridley Combs via ffmpeg-devel [this message]
2024-01-26 14:11 ` Thomas Siedel
2023-11-03 9:57 ` [FFmpeg-devel] [PATCH v1 3/5] avformat: add ts stream types " Thomas Siedel
2023-11-03 9:57 ` [FFmpeg-devel] [PATCH v1 4/5] avcodec: increase minor version " Thomas Siedel
2023-11-03 9:57 ` [FFmpeg-devel] [PATCH v1 5/5] avcodec: add external decoder libvvdec " Thomas Siedel
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