Add nal parser ff_vvc_parser to parse vvc elementary bitstreams.
Signed-off-by: Thomas Siedel <thomas...@spin-digital.com>
---
configure | 3 +
libavcodec/Makefile | 2 +
libavcodec/h2645_parse.c | 71 ++++-
libavcodec/parsers.c | 1 +
libavcodec/vvc_parser.c | 601 +++++++++++++++++++++++++++++++++++++++
5 files changed, 677 insertions(+), 1 deletion(-)
create mode 100644 libavcodec/vvc_parser.c
diff --git a/configure b/configure
index e6470dc03b..bd11b67949 100755
--- a/configure
+++ b/configure
@@ -2447,6 +2447,7 @@ CONFIG_EXTRA="
cbs_av1
cbs_h264
cbs_h265
+ cbs_h266
cbs_jpeg
cbs_mpeg2
cbs_vp9
@@ -2727,6 +2728,7 @@ threads_if_any="$THREADS_LIST"
cbs_av1_select="cbs"
cbs_h264_select="cbs"
cbs_h265_select="cbs"
+cbs_h266_select="cbs"
cbs_jpeg_select="cbs"
cbs_mpeg2_select="cbs"
cbs_vp9_select="cbs"
@@ -3272,6 +3274,7 @@ hevc_parser_select="hevcparse"
mpegaudio_parser_select="mpegaudioheader"
mpeg4video_parser_select="h263dsp mpegvideodec qpeldsp"
vc1_parser_select="vc1dsp"
+vvc_parser_select="cbs_h266"
# bitstream_filters
aac_adtstoasc_bsf_select="adts_header mpeg4audio"
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 94dc75a1b2..8eea3bf243 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -76,6 +76,7 @@ OBJS-$(CONFIG_CBS) += cbs.o cbs_bsf.o
OBJS-$(CONFIG_CBS_AV1) += cbs_av1.o
OBJS-$(CONFIG_CBS_H264) += cbs_h2645.o cbs_sei.o h2645_parse.o
OBJS-$(CONFIG_CBS_H265) += cbs_h2645.o cbs_sei.o h2645_parse.o
+OBJS-$(CONFIG_CBS_H266) += cbs_h2645.o cbs_sei.o h2645_parse.o
OBJS-$(CONFIG_CBS_JPEG) += cbs_jpeg.o
OBJS-$(CONFIG_CBS_MPEG2) += cbs_mpeg2.o
OBJS-$(CONFIG_CBS_VP9) += cbs_vp9.o
@@ -1175,6 +1176,7 @@ OBJS-$(CONFIG_VC1_PARSER) += vc1_parser.o
vc1.o vc1data.o \
OBJS-$(CONFIG_VP3_PARSER) += vp3_parser.o
OBJS-$(CONFIG_VP8_PARSER) += vp8_parser.o
OBJS-$(CONFIG_VP9_PARSER) += vp9_parser.o
+OBJS-$(CONFIG_VVC_PARSER) += vvc_parser.o
OBJS-$(CONFIG_WEBP_PARSER) += webp_parser.o
OBJS-$(CONFIG_XBM_PARSER) += xbm_parser.o
OBJS-$(CONFIG_XMA_PARSER) += xma_parser.o
diff --git a/libavcodec/h2645_parse.c b/libavcodec/h2645_parse.c
index 90944177c7..9fbeee3edd 100644
--- a/libavcodec/h2645_parse.c
+++ b/libavcodec/h2645_parse.c
@@ -27,6 +27,7 @@
#include "libavutil/mem.h"
#include "bytestream.h"
+#include "vvc.h"
#include "hevc.h"
#include "h264.h"
#include "h2645_parse.h"
@@ -145,6 +146,47 @@ nsc:
return si;
}
+static const char *const vvc_nal_type_name[32] = {
+ "TRAIL_NUT", // VVC_TRAIL_NUT
+ "STSA_NUT", // VVC_STSA_NUT
+ "RADL_NUT", // VVC_RADL_NUT
+ "RASL_NUT", // VVC_RASL_NUT
+ "RSV_VCL_4", // VVC_RSV_VCL_4
+ "RSV_VCL_5", // VVC_RSV_VCL_5
+ "RSV_VCL_6", // VVC_RSV_VCL_6
+ "IDR_W_RADL", // VVC_IDR_W_RADL
+ "IDR_N_LP", // VVC_IDR_N_LP
+ "CRA_NUT", // VVC_CRA_NUT
+ "GDR_NUT", // VVC_GDR_NUT
+ "RSV_IRAP_11", // VVC_RSV_IRAP_11
+ "OPI_NUT", // VVC_OPI_NUT
+ "DCI_NUT", // VVC_DCI_NUT
+ "VPS_NUT", // VVC_VPS_NUT
+ "SPS_NUT", // VVC_SPS_NUT
+ "PPS_NUT", // VVC_PPS_NUT
+ "PREFIX_APS_NUT",// VVC_PREFIX_APS_NUT
+ "SUFFIX_APS_NUT",// VVC_SUFFIX_APS_NUT
+ "PH_NUT", // VVC_PH_NUT
+ "AUD_NUT", // VVC_AUD_NUT
+ "EOS_NUT", // VVC_EOS_NUT
+ "EOB_NUT", // VVC_EOB_NUT
+ "PREFIX_SEI_NUT",// VVC_PREFIX_SEI_NUT
+ "SUFFIX_SEI_NUT",// VVC_SUFFIX_SEI_NUT
+ "FD_NUT", // VVC_FD_NUT
+ "RSV_NVCL_26", // VVC_RSV_NVCL_26
+ "RSV_NVCL_27", // VVC_RSV_NVCL_27
+ "UNSPEC_28", // VVC_UNSPEC_28
+ "UNSPEC_29", // VVC_UNSPEC_29
+ "UNSPEC_30", // VVC_UNSPEC_30
+ "UNSPEC_31", // VVC_UNSPEC_31
+};
+
+static const char *vvc_nal_unit_name(int nal_type)
+{
+ av_assert0(nal_type >= 0 && nal_type < 32);
+ return vvc_nal_type_name[nal_type];
+}
+
static const char *const hevc_nal_type_name[64] = {
"TRAIL_N", // HEVC_NAL_TRAIL_N
"TRAIL_R", // HEVC_NAL_TRAIL_R
@@ -293,6 +335,31 @@ static int get_bit_length(H2645NAL *nal, int min_size, int
skip_trailing_zeros)
* @return AVERROR_INVALIDDATA if the packet is not a valid NAL unit,
* 0 otherwise
*/
+static int vvc_parse_nal_header(H2645NAL *nal, void *logctx)
+{
+ GetBitContext *gb = &nal->gb;
+
+ if (get_bits1(gb) != 0) //forbidden_zero_bit
+ return AVERROR_INVALIDDATA;
+
+ skip_bits1(gb); //nuh_reserved_zero_bit
+
+ nal->nuh_layer_id = get_bits(gb, 6);
+ nal->type = get_bits(gb, 5);
+ nal->temporal_id = get_bits(gb, 3) - 1;
+ if (nal->temporal_id < 0)
+ return AVERROR_INVALIDDATA;
+
+ if ((nal->type >= VVC_IDR_W_RADL && nal->type <= VVC_RSV_IRAP_11) &&
nal->temporal_id)
+ return AVERROR_INVALIDDATA;
+
+ av_log(logctx, AV_LOG_DEBUG,
+ "nal_unit_type: %d(%s), nuh_layer_id: %d, temporal_id: %d\n",
+ nal->type, vvc_nal_unit_name(nal->type), nal->nuh_layer_id,
nal->temporal_id);
+
+ return 0;
+}
+
static int hevc_parse_nal_header(H2645NAL *nal, void *logctx)
{
GetBitContext *gb = &nal->gb;
@@ -509,7 +576,9 @@ int ff_h2645_packet_split(H2645Packet *pkt, const uint8_t
*buf, int length,
/* Reset type in case it contains a stale value from a previously
parsed NAL */
nal->type = 0;
- if (codec_id == AV_CODEC_ID_HEVC)
+ if (codec_id == AV_CODEC_ID_VVC)
+ ret = vvc_parse_nal_header(nal, logctx);
+ else if (codec_id == AV_CODEC_ID_HEVC)
ret = hevc_parse_nal_header(nal, logctx);
else
ret = h264_parse_nal_header(nal, logctx);
diff --git a/libavcodec/parsers.c b/libavcodec/parsers.c
index d355808018..e5b01b7a59 100644
--- a/libavcodec/parsers.c
+++ b/libavcodec/parsers.c
@@ -74,6 +74,7 @@ extern const AVCodecParser ff_vorbis_parser;
extern const AVCodecParser ff_vp3_parser;
extern const AVCodecParser ff_vp8_parser;
extern const AVCodecParser ff_vp9_parser;
+extern const AVCodecParser ff_vvc_parser;
extern const AVCodecParser ff_webp_parser;
extern const AVCodecParser ff_xbm_parser;
extern const AVCodecParser ff_xma_parser;
diff --git a/libavcodec/vvc_parser.c b/libavcodec/vvc_parser.c
new file mode 100644
index 0000000000..81f27a23aa
--- /dev/null
+++ b/libavcodec/vvc_parser.c
@@ -0,0 +1,601 @@
+/*
+ * VVC parser
+ *
+ * Copyright (C) 2021 Nuo Mi <nuomi2...@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 "cbs.h"
+#include "cbs_h266.h"
+#include "internal.h"
+#include "parser.h"
+#include "decode.h"
+
+#define START_CODE 0x000001 ///< start_code_prefix_one_3bytes
+
+#define IS_SLICE(nut) (nut <= VVC_RASL_NUT || (nut >= VVC_IDR_W_RADL && nut <=
VVC_GDR_NUT))
+#define IS_PH(nut) (nut == VVC_PH_NUT)
+#define IS_IDR(nut) (nut == VVC_IDR_W_RADL || nut == VVC_IDR_N_LP)
+
+
+typedef struct PuInfo {
+ AVBufferRef *sps_ref;
+ AVBufferRef *pps_ref;
+ AVBufferRef *slice_ref;
+ AVBufferRef *ph_ref;
+
+ const H266RawPPS *pps;
+ const H266RawSPS *sps;
+ const H266RawPH *ph;
+ const H266RawSlice *slice;
+ int pic_type;
+} PuInfo;
+
+typedef struct AuDetector {
+ uint8_t prev_layer_id;
+ int prev_tid0_poc;
+ int prev_poc;
+} AuDetector;
+
+typedef struct VVCParserContext {
+ ParseContext pc;
+ CodedBitstreamContext *cbc;
+
+ CodedBitstreamFragment picture_unit;
+
+ PuInfo au_info;
+ AVPacket au;
+ AVPacket last_au;
+
+ AuDetector au_detector;
+
+ int parsed_extradata;
+} VVCParserContext;
+
+static const enum AVPixelFormat pix_fmts_8bit[] = {
+ AV_PIX_FMT_GRAY8, AV_PIX_FMT_YUV420P,
+ AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P
+};
+
+static const enum AVPixelFormat pix_fmts_10bit[] = {
+ AV_PIX_FMT_GRAY10, AV_PIX_FMT_YUV420P10,
+ AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10
+};
+
+static int get_format(const H266RawSPS *sps)
+{
+ switch (sps->sps_bitdepth_minus8) {
+ case 0:
+ return pix_fmts_8bit[sps->sps_chroma_format_idc];
+ case 2:
+ return pix_fmts_10bit[sps->sps_chroma_format_idc];
+ }
+ return AV_PIX_FMT_NONE;
+}
+
+/**
+ * Find the end of the current frame in the bitstream.
+ * @return the position of the first byte of the next frame, or END_NOT_FOUND
+ */
+static int find_frame_end(AVCodecParserContext *s, const uint8_t *buf,
+ int buf_size)
+{
+ VVCParserContext *ctx = s->priv_data;
+ ParseContext *pc = &ctx->pc;
+ int i;
+
+ for (i = 0; i < buf_size; i++) {
+ int nut;
+
+ pc->state64 = (pc->state64 << 8) | buf[i];
+
+ if (((pc->state64 >> 3 * 8) & 0xFFFFFF) != START_CODE)
+ continue;
+
+ nut = (pc->state64 >> (8 + 3)) & 0x1F;
+ // 7.4.2.4.3 and 7.4.2.4.4
+ if ((nut >= VVC_OPI_NUT && nut <= VVC_PREFIX_APS_NUT &&
+ nut != VVC_PH_NUT) || nut == VVC_AUD_NUT
+ || (nut == VVC_PREFIX_SEI_NUT && !pc->frame_start_found)
+ || nut == VVC_RSV_NVCL_26 || nut == VVC_UNSPEC_28
+ || nut == VVC_UNSPEC_29) {
+ if (pc->frame_start_found) {
+ pc->frame_start_found = 0;
+ return i - 5;
+ }
+ } else if (nut == VVC_PH_NUT || IS_SLICE(nut)) {
+ int sh_picture_header_in_slice_header_flag = buf[i] >> 7;
+
+ if (nut == VVC_PH_NUT || sh_picture_header_in_slice_header_flag) {
+ if (!pc->frame_start_found) {
+ pc->frame_start_found = 1;
+ } else { // First slice of next frame found
+ pc->frame_start_found = 0;
+ return i - 5;
+ }
+ }
+ }
+ }
+ return END_NOT_FOUND;
+}
+
+static int get_pict_type(const CodedBitstreamFragment *pu)
+{
+ int has_p = 0;
+ for (int i = 0; i < pu->nb_units; i++) {
+ CodedBitstreamUnit *unit = &pu->units[i];
+ if (IS_SLICE(unit->type)) {
+ const H266RawSlice *slice = unit->content;
+ uint8_t type = slice->header.sh_slice_type;
+ if (type == VVC_SLICE_TYPE_B) {
+ return AV_PICTURE_TYPE_B;
+ }
+ if (type == VVC_SLICE_TYPE_P) {
+ has_p = 1;
+ }
+ }
+ }
+ return has_p ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
+}
+
+static void pu_info_unref(PuInfo *info)
+{
+ av_buffer_unref(&info->slice_ref);
+ av_buffer_unref(&info->ph_ref);
+ av_buffer_unref(&info->pps_ref);
+ av_buffer_unref(&info->sps_ref);
+ info->slice = NULL;
+ info->ph = NULL;
+ info->pps = NULL;
+ info->sps = NULL;
+ info->pic_type = AV_PICTURE_TYPE_NONE;
+}
+
+static int pu_info_ref(PuInfo *dest, const PuInfo *src)
+{
+ pu_info_unref(dest);
+ dest->sps_ref = av_buffer_ref(src->sps_ref);
+ dest->pps_ref = av_buffer_ref(src->pps_ref);
+ if (src->ph_ref)
+ dest->ph_ref = av_buffer_ref(src->ph_ref);
+ dest->slice_ref = av_buffer_ref(src->slice_ref);
+ if (!dest->sps_ref || !dest->pps_ref || (src->ph_ref && !dest->ph_ref)
+ || !dest->slice_ref) {
+ pu_info_unref(dest);
+ return AVERROR(ENOMEM);
+ }
+
+ dest->sps = src->sps;
+ dest->pps = src->pps;
+ dest->ph = src->ph;
+ dest->slice = src->slice;
+ dest->pic_type = src->pic_type;
+ return 0;
+}
+
+static int set_parser_ctx(AVCodecParserContext *s, AVCodecContext *avctx,
+ const PuInfo *pu)
+{
+ int ret, num = 0, den = 0;
+ static const uint8_t h266_sub_width_c[] = {
+ 1, 2, 2, 1
+ };
+ static const uint8_t h266_sub_height_c[] = {
+ 1, 2, 1, 1
+ };
+ const H266RawSPS *sps = pu->sps;
+ const H266RawPPS *pps = pu->pps;
+ //const H266RawPH *ph = pu->ph;
+ const H266RawNALUnitHeader *nal = &pu->slice->header.nal_unit_header;
+
+ /* set some sane default values */
+ s->pict_type = AV_PICTURE_TYPE_I;
+ s->key_frame = 0;
+ s->picture_structure = AV_PICTURE_STRUCTURE_FRAME;
+
+ s->key_frame = nal->nal_unit_type == VVC_IDR_W_RADL ||
+ nal->nal_unit_type == VVC_IDR_N_LP ||
+ nal->nal_unit_type == VVC_CRA_NUT ||
+ nal->nal_unit_type == VVC_GDR_NUT;
+
+ s->coded_width = pps->pps_pic_width_in_luma_samples;
+ s->coded_height = pps->pps_pic_height_in_luma_samples;
+ s->width = pps->pps_pic_width_in_luma_samples -
+ (pps->pps_conf_win_left_offset + pps->pps_conf_win_right_offset) *
+ h266_sub_width_c[sps->sps_chroma_format_idc];
+ s->height = pps->pps_pic_height_in_luma_samples -
+ (pps->pps_conf_win_top_offset + pps->pps_conf_win_bottom_offset) *
+ h266_sub_height_c[sps->sps_chroma_format_idc];;
+ s->pict_type = pu->pic_type;
+ s->format = get_format(sps);
+
+ avctx->profile = sps->profile_tier_level.general_profile_idc;
+ avctx->level = sps->profile_tier_level.general_level_idc;
+
+ avctx->colorspace = (enum AVColorSpace) sps->vui.vui_matrix_coeffs;
+ avctx->color_primaries = (enum AVColorPrimaries)
sps->vui.vui_colour_primaries;
+ avctx->color_trc = (enum AVColorTransferCharacteristic)
sps->vui.vui_transfer_characteristics;
+ avctx->color_range =
+ sps->vui.vui_full_range_flag ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
+
+ if (s->width != avctx->width || s->height != avctx->height) {
+ ret = ff_set_dimensions(avctx, s->width, s->height);
+ if (ret < 0)
+ return ret;
+ }
+ avctx->pix_fmt = s->format;
+ avctx->has_b_frames = (sps->sps_max_sublayers_minus1 + 1) > 2 ? 2 :
+ sps->sps_max_sublayers_minus1;
+ avctx->max_b_frames = sps->sps_max_sublayers_minus1;
+
+ if (sps->sps_ptl_dpb_hrd_params_present_flag &&
+ sps->sps_timing_hrd_params_present_flag) {
+ num = sps->sps_general_timing_hrd_parameters.num_units_in_tick;
+ den = sps->sps_general_timing_hrd_parameters.time_scale;
+ } else {
+ return 1;
+ }
+ if (num != 0 && den != 0)
+ av_reduce(&avctx->framerate.den, &avctx->framerate.num,
+ num, den, 1 << 30);
+
+ if (avctx->framerate.num)
+ avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational) {
+ avctx->ticks_per_frame, 1} ));
+
+ return 1;
+}
+
+static int set_ctx(AVCodecParserContext *s, AVCodecContext *avctx,
+ const PuInfo *next_pu)
+{
+ VVCParserContext *ctx = s->priv_data;
+ int ret;
+ if (ctx->au_info.slice) {
+ if ((ret = set_parser_ctx(s, avctx, &ctx->au_info)) < 0)
+ return ret;
+ }
+ ret = pu_info_ref(&ctx->au_info, next_pu);
+ return ret;
+}
+
+//8.3.1 Decoding process for picture order count.
+//VTM did not follow the spec, and it's much simpler than spec.
+//We follow the VTM.
+static void get_slice_poc(VVCParserContext *s, int *poc,
+ const H266RawSPS *sps,
+ const H266RawPH *ph,
+ const H266RawSliceHeader *slice, void *log_ctx)
+{
+ int poc_msb, max_poc_lsb, poc_lsb;
+ AuDetector *d = &s->au_detector;
+ max_poc_lsb = 1 << (sps->sps_log2_max_pic_order_cnt_lsb_minus4 + 4);
+ poc_lsb = ph->ph_pic_order_cnt_lsb;
+ if (IS_IDR(slice->nal_unit_header.nal_unit_type)) {
+ if (ph->ph_poc_msb_cycle_present_flag)
+ poc_msb = ph->ph_poc_msb_cycle_val * max_poc_lsb;
+ else
+ poc_msb = 0;
+ } else {
+ int prev_poc = d->prev_tid0_poc;
+ int prev_poc_lsb = prev_poc & (max_poc_lsb - 1);
+ int prev_poc_msb = prev_poc - prev_poc_lsb;
+ if (ph->ph_poc_msb_cycle_present_flag) {
+ poc_msb = ph->ph_poc_msb_cycle_val * max_poc_lsb;
+ } else {
+ if ((poc_lsb < prev_poc_lsb) && ((prev_poc_lsb - poc_lsb) >=
+ (max_poc_lsb / 2)))
+ poc_msb = prev_poc_msb + max_poc_lsb;
+ else if ((poc_lsb > prev_poc_lsb) && ((poc_lsb - prev_poc_lsb) >
+ (max_poc_lsb / 2)))
+ poc_msb = prev_poc_msb - max_poc_lsb;
+ else
+ poc_msb = prev_poc_msb;
+ }
+ }
+
+ *poc = poc_msb + poc_lsb;
+}
+
+static void au_detector_init(AuDetector *d)
+{
+ d->prev_layer_id = UINT8_MAX;
+ d->prev_poc = INT_MAX;
+ d->prev_tid0_poc = INT_MAX;
+}
+
+static int is_au_start(VVCParserContext *s, const PuInfo *pu, void *log_ctx)
+{
+ //7.4.2.4.3
+ AuDetector *d = &s->au_detector;
+ const H266RawSPS *sps = pu->sps;
+ const H266RawNALUnitHeader *nal = &pu->slice->header.nal_unit_header;
+ const H266RawPH *ph = pu->ph;
+ const H266RawSlice *slice = pu->slice;
+ int ret, poc, nut;
+
+ get_slice_poc(s, &poc, sps, ph, &slice->header, log_ctx);
+
+ ret = (nal->nuh_layer_id <= d->prev_layer_id) || (poc != d->prev_poc);
+
+ nut = nal->nal_unit_type;
+ d->prev_layer_id = nal->nuh_layer_id;
+ d->prev_poc = poc;
+ if (nal->nuh_temporal_id_plus1 == 1 &&
+ !ph->ph_non_ref_pic_flag && nut != VVC_RADL_NUT
+ && nut != VVC_RASL_NUT) {
+ d->prev_tid0_poc = poc;
+ }
+ return ret;
+}
+
+static int get_pu_info(PuInfo *info, const CodedBitstreamH266Context *h266,
+ const CodedBitstreamFragment *pu, void *logctx)
+{
+ const H266RawNALUnitHeader *nal;
+ int ret;
+
+ memset(info, 0, sizeof(*info));
+ for (int i = 0; i < pu->nb_units; i++) {
+ nal = pu->units[i].content;
+ if (!nal)
+ continue;
+ if (IS_PH(nal->nal_unit_type)) {
+ info->ph = pu->units[i].content;
+ info->ph_ref = pu->units[i].content_ref;
+ } else if (IS_SLICE(nal->nal_unit_type)) {
+ info->slice = pu->units[i].content;
+ info->slice_ref = pu->units[i].content_ref;
+ if (info->slice->header.sh_picture_header_in_slice_header_flag)
+ info->ph = &info->slice->header.sh_picture_header;
+ if (!info->ph) {
+ av_log(logctx, AV_LOG_ERROR,
+ "can't find picture header in picture unit.\n");
+ ret = AVERROR_INVALIDDATA;
+ goto error;
+ }
+ break;
+ }
+ }
+ if (!info->slice) {
+ av_log(logctx, AV_LOG_ERROR, "can't find slice in picture unit.\n");
+ ret = AVERROR_INVALIDDATA;
+ goto error;
+ }
+ info->pps = h266->pps[info->ph->ph_pic_parameter_set_id];
+ if (!info->pps) {
+ av_log(logctx, AV_LOG_ERROR, "PPS id %d is not avaliable.\n",
+ info->ph->ph_pic_parameter_set_id);
+ ret = AVERROR_INVALIDDATA;
+ goto error;
+ }
+ info->pps_ref = h266->pps_ref[info->ph->ph_pic_parameter_set_id];
+ info->sps = h266->sps[info->pps->pps_seq_parameter_set_id];
+ if (!info->sps) {
+ av_log(logctx, AV_LOG_ERROR, "SPS id %d is not avaliable.\n",
+ info->pps->pps_seq_parameter_set_id);
+ ret = AVERROR_INVALIDDATA;
+ goto error;
+ }
+ info->sps_ref = h266->sps_ref[info->pps->pps_seq_parameter_set_id];
+ info->pic_type = get_pict_type(pu);
+ return 0;
+ error:
+ memset(info, 0, sizeof(*info));
+ return ret;
+}
+
+static int append_au(AVPacket *pkt, const uint8_t *buf, int buf_size)
+{
+ int offset = pkt->size;
+ int ret;
+ if ((ret = av_grow_packet(pkt, buf_size)) < 0)
+ goto end;
+ memcpy(pkt->data + offset, buf, buf_size);
+ end:
+ return ret;
+}
+
+/**
+ * Parse NAL units of found picture and decode some basic information.
+ *
+ * @param s parser context.
+ * @param avctx codec context.
+ * @param buf buffer with field/frame data.
+ * @param buf_size size of the buffer.
+ * @return < 0 for error, == 0 for a complete au, > 0 is not a completed au.
+ */
+static int parse_nal_units(AVCodecParserContext *s, const uint8_t *buf,
+ int buf_size, AVCodecContext *avctx)
+{
+ VVCParserContext *ctx = s->priv_data;
+ const CodedBitstreamH266Context *h266 = ctx->cbc->priv_data;
+
+ CodedBitstreamFragment *pu = &ctx->picture_unit;
+ int ret;
+ PuInfo info;
+
+ if (!buf_size) {
+ if (ctx->au.size) {
+ if ((ret = av_packet_ref(&ctx->last_au, &ctx->au)) < 0)
+ goto end;
+ av_packet_unref(&ctx->au);
+ return 0;
+ }
+ return 1;
+ }
+
+ if ((ret = ff_cbs_read(ctx->cbc, pu, buf, buf_size)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to parse picture unit.\n");
+ goto end;
+ }
+ if ((ret = get_pu_info(&info, h266, pu, avctx)) < 0)
+ goto end;
+ if (is_au_start(ctx, &info, avctx)) {
+ if ((ret = set_ctx(s, avctx, &info)) < 0)
+ goto end;
+ if ((ret = av_packet_ref(&ctx->last_au, &ctx->au)) < 0)
+ goto end;
+ av_packet_unref(&ctx->au);
+ } else {
+ ret = 1; //not a completed au
+ }
+ if (append_au(&ctx->au, buf, buf_size) < 0)
+ ret = AVERROR(ENOMEM);
+ end:
+ ff_cbs_fragment_reset(pu);
+ return ret;
+}
+
+/**
+ * Combine PU to AU
+ *
+ * @param s parser context.
+ * @param avctx codec context.
+ * @param buf buffer to a PU.
+ * @param buf_size size of the buffer.
+ * @return < 0 for error, == 0 a complete au, > 0 not a completed au.
+ */
+static int combine_au(AVCodecParserContext *s, AVCodecContext *avctx,
+ const uint8_t **buf, int *buf_size)
+{
+ VVCParserContext *ctx = s->priv_data;
+ int ret;
+
+ ctx->cbc->log_ctx = avctx;
+
+ av_packet_unref(&ctx->last_au);
+ ret = parse_nal_units(s, *buf, *buf_size, avctx);
+ if (ret == 0) {
+ if (ctx->last_au.size) {
+ *buf = ctx->last_au.data;
+ *buf_size = ctx->last_au.size;
+ } else {
+ ret = 1; //no output
+ }
+ }
+ ctx->cbc->log_ctx = NULL;
+ return ret;
+}
+
+static int vvc_parser_parse(AVCodecParserContext *s, AVCodecContext *avctx,
+ const uint8_t **poutbuf, int *poutbuf_size,
+ const uint8_t *buf, int buf_size)
+{
+ int next, ret;
+ VVCParserContext *ctx = s->priv_data;
+ ParseContext *pc = &ctx->pc;
+ CodedBitstreamFragment *pu = &ctx->picture_unit;
+
+ int is_dummy_buf = !buf_size;
+ int flush = !buf_size;
+ const uint8_t *dummy_buf = buf;
+
+ if (avctx->extradata_size && !ctx->parsed_extradata) {
+ ctx->parsed_extradata = 1;
+
+ ret = ff_cbs_read_extradata_from_codec(ctx->cbc, pu, avctx);
+ if (ret < 0)
+ av_log(avctx, AV_LOG_WARNING, "Failed to parse extradata.\n");
+
+ ff_cbs_fragment_reset(pu);
+ }
+
+ if (s->flags & PARSER_FLAG_COMPLETE_FRAMES) {
+ next = buf_size;
+ } else {
+ next = find_frame_end(s, buf, buf_size);
+ if (ff_combine_frame(pc, next, &buf, &buf_size) < 0)
+ goto no_out;
+ }
+
+ is_dummy_buf &= (dummy_buf == buf);
+
+ if (!is_dummy_buf) {
+ ret = combine_au(s, avctx, &buf, &buf_size);
+ if (ret > 0 && flush) {
+ buf_size = 0;
+ ret = combine_au(s, avctx, &buf, &buf_size);
+ }
+ if (ret != 0) {
+ buf_size = next;
+ goto no_out;
+ }
+ }
+
+ *poutbuf = buf;
+ *poutbuf_size = buf_size;
+ return next;
+ no_out:
+ *poutbuf = NULL;
+ *poutbuf_size = 0;
+ return buf_size;
+}
+
+static const CodedBitstreamUnitType decompose_unit_types[] = {
+ VVC_TRAIL_NUT,
+ VVC_STSA_NUT,
+ VVC_RADL_NUT,
+ VVC_RASL_NUT,
+ VVC_IDR_W_RADL,
+ VVC_IDR_N_LP,
+ VVC_CRA_NUT,
+ VVC_GDR_NUT,
+ VVC_VPS_NUT,
+ VVC_SPS_NUT,
+ VVC_PPS_NUT,
+ VVC_PH_NUT,
+ VVC_AUD_NUT,
+};
+
+static av_cold int vvc_parser_init(AVCodecParserContext *s)
+{
+ VVCParserContext *ctx = s->priv_data;
+ int ret;
+
+ ret = ff_cbs_init(&ctx->cbc, AV_CODEC_ID_VVC, NULL);
+ if (ret < 0)
+ return ret;
+ au_detector_init(&ctx->au_detector);
+
+ ctx->cbc->decompose_unit_types = decompose_unit_types;
+ ctx->cbc->nb_decompose_unit_types = FF_ARRAY_ELEMS(decompose_unit_types);
+
+ return ret;
+}
+
+static void vvc_parser_close(AVCodecParserContext *s)
+{
+ VVCParserContext *ctx = s->priv_data;
+
+ pu_info_unref(&ctx->au_info);
+ av_packet_unref(&ctx->au);
+ av_packet_unref(&ctx->last_au);
+ ff_cbs_fragment_free(&ctx->picture_unit);
+
+ ff_cbs_close(&ctx->cbc);
+ av_freep(&ctx->pc.buffer);
+}
+
+AVCodecParser ff_vvc_parser = {
+ .codec_ids = { AV_CODEC_ID_VVC },
+ .priv_data_size = sizeof(VVCParserContext),
+ .parser_init = vvc_parser_init,
+ .parser_close = vvc_parser_close,
+ .parser_parse = vvc_parser_parse,
+};
--
2.25.1
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