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TYZPR06MB6747 Subject: [FFmpeg-devel] [PATCH v6 03/14] vvcdec: add parameter parser for sps, pps, ph, sh X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Nuo Mi Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: ClFecam6b6LZ --- libavcodec/vvc/Makefile | 1 + libavcodec/vvc/vvc_ps.c | 1149 +++++++++++++++++++++++++++++++++++++++ libavcodec/vvc/vvc_ps.h | 263 +++++++++ libavcodec/vvc/vvcdec.h | 7 + 4 files changed, 1420 insertions(+) create mode 100644 libavcodec/vvc/vvc_ps.c create mode 100644 libavcodec/vvc/vvc_ps.h diff --git a/libavcodec/vvc/Makefile b/libavcodec/vvc/Makefile index 8a5c66ab13..b2b187ac6f 100644 --- a/libavcodec/vvc/Makefile +++ b/libavcodec/vvc/Makefile @@ -3,3 +3,4 @@ clean:: OBJS-$(CONFIG_VVC_DECODER) += vvc/vvcdec.o \ vvc/vvc_data.o \ + vvc/vvc_ps.o \ diff --git a/libavcodec/vvc/vvc_ps.c b/libavcodec/vvc/vvc_ps.c new file mode 100644 index 0000000000..284e7406c2 --- /dev/null +++ b/libavcodec/vvc/vvc_ps.c @@ -0,0 +1,1149 @@ +/* + * VVC parameter set parser + * + * Copyright (C) 2023 Nuo Mi + * Copyright (C) 2022 Xu Mu + * + * 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/cbs_h266.h" +#include "libavutil/imgutils.h" +#include "libavcodec/refstruct.h" +#include "vvc_data.h" +#include "vvc_ps.h" +#include "vvcdec.h" + +static int sps_map_pixel_format(VVCSPS *sps, void *log_ctx) +{ + const H266RawSPS *r = sps->r; + const AVPixFmtDescriptor *desc; + + switch (sps->bit_depth) { + case 8: + if (r->sps_chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY8; + if (r->sps_chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P; + if (r->sps_chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P; + if (r->sps_chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P; + break; + case 10: + if (r->sps_chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY10; + if (r->sps_chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P10; + if (r->sps_chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P10; + if (r->sps_chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P10; + break; + case 12: + if (r->sps_chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY12; + if (r->sps_chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P12; + if (r->sps_chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P12; + if (r->sps_chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P12; + break; + default: + av_log(log_ctx, AV_LOG_ERROR, + "The following bit-depths are currently specified: 8, 10, 12 bits, " + "chroma_format_idc is %d, depth is %d\n", + r->sps_chroma_format_idc, sps->bit_depth); + return AVERROR_INVALIDDATA; + } + + desc = av_pix_fmt_desc_get(sps->pix_fmt); + if (!desc) + return AVERROR(EINVAL); + + sps->hshift[0] = sps->vshift[0] = 0; + sps->hshift[2] = sps->hshift[1] = desc->log2_chroma_w; + sps->vshift[2] = sps->vshift[1] = desc->log2_chroma_h; + + sps->pixel_shift = sps->bit_depth > 8; + + return 0; +} + +static int sps_bit_depth(VVCSPS *sps, void *log_ctx) +{ + const H266RawSPS *r = sps->r; + + sps->bit_depth = r->sps_bitdepth_minus8 + 8; + sps->qp_bd_offset = 6 * (sps->bit_depth - 8); + sps->log2_transform_range = + r->sps_extended_precision_flag ? FFMAX(15, FFMIN(20, sps->bit_depth + 6)) : 15; + return sps_map_pixel_format(sps, log_ctx); +} + +static int sps_chroma_qp_table(VVCSPS *sps) +{ + const H266RawSPS *r = sps->r; + const int num_qp_tables = r->sps_same_qp_table_for_chroma_flag ? + 1 : (r->sps_joint_cbcr_enabled_flag ? 3 : 2); + + for (int i = 0; i < num_qp_tables; i++) { + int num_points_in_qp_table; + int8_t qp_in[VVC_MAX_POINTS_IN_QP_TABLE], qp_out[VVC_MAX_POINTS_IN_QP_TABLE]; + unsigned int delta_qp_in[VVC_MAX_POINTS_IN_QP_TABLE]; + int off = sps->qp_bd_offset; + + num_points_in_qp_table = r->sps_num_points_in_qp_table_minus1[i] + 1; + + qp_out[0] = qp_in[0] = r->sps_qp_table_start_minus26[i] + 26; + for (int j = 0; j < num_points_in_qp_table; j++ ) { + delta_qp_in[j] = r->sps_delta_qp_in_val_minus1[i][j] + 1; + qp_in[j+1] = qp_in[j] + delta_qp_in[j]; + qp_out[j+1] = qp_out[j] + (r->sps_delta_qp_in_val_minus1[i][j] ^ r->sps_delta_qp_diff_val[i][j]); + } + sps->chroma_qp_table[i][qp_in[0] + off] = qp_out[0]; + for (int k = qp_in[0] - 1 + off; k >= 0; k--) + sps->chroma_qp_table[i][k] = av_clip(sps->chroma_qp_table[i][k+1]-1, -off, 63); + + for (int j = 0; j < num_points_in_qp_table; j++) { + int sh = delta_qp_in[j] >> 1; + for (int k = qp_in[j] + 1 + off, m = 1; k <= qp_in[j+1] + off; k++, m++) { + sps->chroma_qp_table[i][k] = sps->chroma_qp_table[i][qp_in[j] + off] + + ((qp_out[j+1] - qp_out[j]) * m + sh) / delta_qp_in[j]; + } + } + for (int k = qp_in[num_points_in_qp_table] + 1 + off; k <= 63 + off; k++) + sps->chroma_qp_table[i][k] = av_clip(sps->chroma_qp_table[i][k-1] + 1, -sps->qp_bd_offset, 63); + } + if (r->sps_same_qp_table_for_chroma_flag) { + memcpy(&sps->chroma_qp_table[1], &sps->chroma_qp_table[0], sizeof(sps->chroma_qp_table[0])); + memcpy(&sps->chroma_qp_table[2], &sps->chroma_qp_table[0], sizeof(sps->chroma_qp_table[0])); + } + + return 0; +} + +static void sps_poc(VVCSPS *sps) +{ + sps->max_pic_order_cnt_lsb = 1 << (sps->r->sps_log2_max_pic_order_cnt_lsb_minus4 + 4); +} + +static void sps_inter(VVCSPS *sps) +{ + const H266RawSPS *r = sps->r; + + sps->max_num_merge_cand = 6 - r->sps_six_minus_max_num_merge_cand; + sps->max_num_ibc_merge_cand = 6 - r->sps_six_minus_max_num_ibc_merge_cand; + + if (sps->r->sps_gpm_enabled_flag) { + sps->max_num_gpm_merge_cand = 2; + if (sps->max_num_merge_cand >= 3) + sps->max_num_gpm_merge_cand = sps->max_num_merge_cand - r->sps_max_num_merge_cand_minus_max_num_gpm_cand; + } + + sps->log2_parallel_merge_level = r->sps_log2_parallel_merge_level_minus2 + 2; +} + +static void sps_partition_constraints(VVCSPS* sps) +{ + const H266RawSPS *r = sps->r; + + sps->ctb_log2_size_y = r->sps_log2_ctu_size_minus5 + 5; + sps->ctb_size_y = 1 << sps->ctb_log2_size_y; + sps->min_cb_log2_size_y = r->sps_log2_min_luma_coding_block_size_minus2 + 2; + sps->min_cb_size_y = 1 << sps->min_cb_log2_size_y; + sps->max_tb_size_y = 1 << (r->sps_max_luma_transform_size_64_flag ? 6 : 5); + sps->max_ts_size = 1 << (r->sps_log2_transform_skip_max_size_minus2 + 2); +} + +static void sps_ladf(VVCSPS* sps) +{ + const H266RawSPS *r = sps->r; + + if (r->sps_ladf_enabled_flag) { + sps->num_ladf_intervals = r->sps_num_ladf_intervals_minus2 + 2; + sps->ladf_interval_lower_bound[0] = 0; + for (int i = 0; i < sps->num_ladf_intervals - 1; i++) { + sps->ladf_interval_lower_bound[i + 1] = + sps->ladf_interval_lower_bound[i] + r->sps_ladf_delta_threshold_minus1[i] + 1; + } + } +} + +static int sps_derive(VVCSPS *sps, void *log_ctx) +{ + int ret; + const H266RawSPS *r = sps->r; + + sps->width = r->sps_pic_width_max_in_luma_samples; + sps->height = r->sps_pic_height_max_in_luma_samples; + + ret = sps_bit_depth(sps, log_ctx); + if (ret < 0) + return ret; + sps_poc(sps); + sps_inter(sps); + sps_partition_constraints(sps); + sps_ladf(sps); + if (r->sps_chroma_format_idc != 0) + sps_chroma_qp_table(sps); + + return 0; +} + +static void sps_free(FFRefStructOpaque opaque, void *obj) +{ + VVCSPS *sps = (VVCSPS*)obj; + ff_refstruct_unref(&sps->r); +} + +static const VVCSPS *sps_alloc(const H266RawSPS *rsps, void *log_ctx) +{ + int ret; + VVCSPS *sps = ff_refstruct_alloc_ext(sizeof(*sps), 0, NULL, sps_free); + + ff_refstruct_replace(&sps->r, rsps); + + ret = sps_derive(sps, log_ctx); + if (ret < 0) + goto fail; + + return sps; + +fail: + ff_refstruct_unref(&sps); + return NULL; +} + +static int decode_sps(VVCParamSets *ps, const H266RawSPS *rsps, void *log_ctx) +{ + const int sps_id = rsps->sps_seq_parameter_set_id; + const VVCSPS *old_sps = ps->sps_list[sps_id]; + const VVCSPS *sps; + + if (old_sps && old_sps->r == rsps) + return 0; + + sps = sps_alloc(rsps, log_ctx); + if (!sps) + return AVERROR(ENOMEM); + + ff_refstruct_replace(&ps->sps_list[sps_id], sps); + ff_refstruct_unref(&sps); + + return 0; +} + +static void pps_chroma_qp_offset(VVCPPS *pps) +{ + pps->chroma_qp_offset[CB - 1] = pps->r->pps_cb_qp_offset; + pps->chroma_qp_offset[CR - 1] = pps->r->pps_cr_qp_offset; + pps->chroma_qp_offset[JCBCR - 1]= pps->r->pps_joint_cbcr_qp_offset_value; + for (int i = 0; i < 6; i++) { + pps->chroma_qp_offset_list[i][CB - 1] = pps->r->pps_cb_qp_offset_list[i]; + pps->chroma_qp_offset_list[i][CR - 1] = pps->r->pps_cr_qp_offset_list[i]; + pps->chroma_qp_offset_list[i][JCBCR - 1]= pps->r->pps_joint_cbcr_qp_offset_list[i]; + } +} + +static void pps_width_height(VVCPPS *pps, const VVCSPS *sps) +{ + const H266RawPPS *r = pps->r; + + pps->width = r->pps_pic_width_in_luma_samples; + pps->height = r->pps_pic_height_in_luma_samples; + + pps->ctb_width = AV_CEIL_RSHIFT(pps->width, sps->ctb_log2_size_y); + pps->ctb_height = AV_CEIL_RSHIFT(pps->height, sps->ctb_log2_size_y); + pps->ctb_count = pps->ctb_width * pps->ctb_height; + + pps->min_cb_width = pps->width >> sps->min_cb_log2_size_y; + pps->min_cb_height = pps->height >> sps->min_cb_log2_size_y; + + pps->min_pu_width = pps->width >> MIN_PU_LOG2; + pps->min_pu_height = pps->height >> MIN_PU_LOG2; + pps->min_tu_width = pps->width >> MIN_TU_LOG2; + pps->min_tu_height = pps->height >> MIN_TU_LOG2; + + pps->width32 = AV_CEIL_RSHIFT(pps->width, 5); + pps->height32 = AV_CEIL_RSHIFT(pps->height, 5); + pps->width64 = AV_CEIL_RSHIFT(pps->width, 6); + pps->height64 = AV_CEIL_RSHIFT(pps->height, 6); +} + +static int pps_bd(VVCPPS *pps) +{ + const H266RawPPS *r = pps->r; + + pps->col_bd = av_calloc(r->num_tile_columns + 1, sizeof(*pps->col_bd)); + pps->row_bd = av_calloc(r->num_tile_rows + 1, sizeof(*pps->row_bd)); + pps->ctb_to_col_bd = av_calloc(pps->ctb_width + 1, sizeof(*pps->ctb_to_col_bd)); + pps->ctb_to_row_bd = av_calloc(pps->ctb_height + 1, sizeof(*pps->ctb_to_col_bd)); + if (!pps->col_bd || !pps->row_bd || !pps->ctb_to_col_bd || !pps->ctb_to_row_bd) + return AVERROR(ENOMEM); + + for (int i = 0, j = 0; i < r->num_tile_columns; i++) { + pps->col_bd[i] = j; + j += r->col_width_val[i]; + for (int k = pps->col_bd[i]; k < j; k++) + pps->ctb_to_col_bd[k] = pps->col_bd[i]; + } + + for (int i = 0, j = 0; i < r->num_tile_rows; i++) { + pps->row_bd[i] = j; + j += r->row_height_val[i]; + for (int k = pps->row_bd[i]; k < j; k++) + pps->ctb_to_row_bd[k] = pps->row_bd[i]; + } + return 0; +} + + +static int next_tile_idx(int tile_idx, const int i, const H266RawPPS *r) +{ + if (r->pps_tile_idx_delta_present_flag) { + tile_idx += r->pps_tile_idx_delta_val[i]; + } else { + tile_idx += r->pps_slice_width_in_tiles_minus1[i] + 1; + if (tile_idx % r->num_tile_columns == 0) + tile_idx += (r->pps_slice_height_in_tiles_minus1[i]) * r->num_tile_columns; + } + return tile_idx; +} + +static void tile_xy(int *tile_x, int *tile_y, const int tile_idx, const VVCPPS *pps) +{ + *tile_x = tile_idx % pps->r->num_tile_columns; + *tile_y = tile_idx / pps->r->num_tile_columns; +} + +static void ctu_xy(int *ctu_x, int *ctu_y, const int tile_x, const int tile_y, const VVCPPS *pps) +{ + *ctu_x = pps->col_bd[tile_x]; + *ctu_y = pps->row_bd[tile_y]; +} + +static int ctu_rs(const int ctu_x, const int ctu_y, const VVCPPS *pps) +{ + return pps->ctb_width * ctu_y + ctu_x; +} + +static int pps_add_ctus(VVCPPS *pps, int *off, const int ctu_x, const int ctu_y, + const int w, const int h) +{ + int start = *off; + for (int y = 0; y < h; y++) { + for (int x = 0; x < w; x++) { + pps->ctb_addr_in_slice[*off] = ctu_rs(ctu_x + x, ctu_y + y, pps); + (*off)++; + } + } + return *off - start; +} + +static int pps_one_tile_slices(VVCPPS *pps, const int tile_idx, int i, int *off) +{ + const H266RawPPS *r = pps->r; + int ctu_x, ctu_y, ctu_y_end, tile_x, tile_y; + + tile_xy(&tile_x, &tile_y, tile_idx, pps); + ctu_xy(&ctu_x, &ctu_y, tile_x, tile_y, pps); + ctu_y_end = ctu_y + r->row_height_val[tile_y]; + while (ctu_y < ctu_y_end) { + pps->slice_start_offset[i] = *off; + pps->num_ctus_in_slice[i] = pps_add_ctus(pps, off, ctu_x, ctu_y, + r->col_width_val[tile_x], r->slice_height_in_ctus[i]); + ctu_y += r->slice_height_in_ctus[i++]; + } + i--; + return i; +} + +static void pps_multi_tiles_slice(VVCPPS *pps, const int tile_idx, const int i, int *off) +{ + const H266RawPPS *r = pps->r; + int ctu_x, ctu_y,tile_x, tile_y; + + tile_xy(&tile_x, &tile_y, tile_idx, pps); + pps->slice_start_offset[i] = *off; + pps->num_ctus_in_slice[i] = 0; + for (int ty = tile_y; ty <= tile_y + r->pps_slice_height_in_tiles_minus1[i]; ty++) { + for (int tx = tile_x; tx <= tile_x + r->pps_slice_width_in_tiles_minus1[i]; tx++) { + ctu_xy(&ctu_x, &ctu_y, tx, ty, pps); + pps->num_ctus_in_slice[i] += pps_add_ctus(pps, off, ctu_x, ctu_y, + r->col_width_val[tx], r->row_height_val[ty]); + } + } +} + +static void pps_rect_slice(VVCPPS* pps) +{ + const H266RawPPS* r = pps->r; + int tile_idx = 0, off = 0; + + for (int i = 0; i < r->pps_num_slices_in_pic_minus1 + 1; i++) { + if (!r->pps_slice_width_in_tiles_minus1[i] && + !r->pps_slice_height_in_tiles_minus1[i]) { + i = pps_one_tile_slices(pps, tile_idx, i, &off); + } else { + pps_multi_tiles_slice(pps, tile_idx, i, &off); + + } + tile_idx = next_tile_idx(tile_idx, i, r); + } +} + +static void pps_no_rect_slice(VVCPPS* pps) +{ + const H266RawPPS* r = pps->r; + int ctu_x, ctu_y, off = 0; + + for (int tile_y = 0; tile_y < r->num_tile_rows; tile_y++) { + for (int tile_x = 0; tile_x < r->num_tile_columns; tile_x++) { + ctu_xy(&ctu_x, &ctu_y, tile_x, tile_y, pps); + pps_add_ctus(pps, &off, ctu_x, ctu_y, r->col_width_val[tile_x], r->row_height_val[tile_y]); + } + } +} + +static int pps_slice_map(VVCPPS *pps) +{ + pps->ctb_addr_in_slice = av_calloc(pps->ctb_count, sizeof(*pps->ctb_addr_in_slice)); + if (!pps->ctb_addr_in_slice) + return AVERROR(ENOMEM); + + if (pps->r->pps_rect_slice_flag) + pps_rect_slice(pps); + else + pps_no_rect_slice(pps); + + return 0; +} + +static void pps_ref_wraparound_offset(VVCPPS *pps, const VVCSPS *sps) +{ + const H266RawPPS *r = pps->r; + + if (r->pps_ref_wraparound_enabled_flag) + pps->ref_wraparound_offset = (pps->width / sps->min_cb_size_y) - r->pps_pic_width_minus_wraparound_offset; +} + +static int pps_derive(VVCPPS *pps, const VVCSPS *sps) +{ + int ret; + + pps_chroma_qp_offset(pps); + pps_width_height(pps, sps); + + ret = pps_bd(pps); + if (ret < 0) + return ret; + + ret = pps_slice_map(pps); + if (ret < 0) + return ret; + + pps_ref_wraparound_offset(pps, sps); + + return 0; +} + +static void pps_free(FFRefStructOpaque opaque, void *obj) +{ + VVCPPS *pps = (VVCPPS *)obj; + + ff_refstruct_unref(&pps->r); + + av_freep(&pps->col_bd); + av_freep(&pps->row_bd); + av_freep(&pps->ctb_to_col_bd); + av_freep(&pps->ctb_to_row_bd); + av_freep(&pps->ctb_addr_in_slice); +} + +static const VVCPPS *pps_alloc(const H266RawPPS *rpps, const VVCSPS *sps) +{ + int ret; + VVCPPS *pps = ff_refstruct_alloc_ext(sizeof(*pps), 0, NULL, pps_free); + + if (!pps) + return NULL; + + ff_refstruct_replace(&pps->r, rpps); + + ret = pps_derive(pps, sps); + if (ret < 0) + goto fail; + + return pps; + +fail: + ff_refstruct_unref(&pps); + return NULL; +} + +static int decode_pps(VVCParamSets *ps, const H266RawPPS *rpps) +{ + int ret = 0; + const int pps_id = rpps->pps_pic_parameter_set_id; + const int sps_id = rpps->pps_seq_parameter_set_id; + const VVCPPS *old_pps = ps->pps_list[pps_id]; + const VVCPPS *pps; + + if (old_pps && old_pps->r == rpps) + return 0; + + pps = pps_alloc(rpps, ps->sps_list[sps_id]); + if (!pps) + return AVERROR(ENOMEM); + + ff_refstruct_replace(&ps->pps_list[pps_id], pps); + ff_refstruct_unref(&pps); + + return ret; +} + +static int decode_ps(VVCParamSets *ps, const CodedBitstreamH266Context *h266, void *log_ctx) +{ + const H266RawPictureHeader *ph = h266->ph; + const H266RawPPS *rpps; + const H266RawSPS *rsps; + int ret; + + if (!ph) + return AVERROR_INVALIDDATA; + + rpps = h266->pps[ph->ph_pic_parameter_set_id]; + if (!rpps) + return AVERROR_INVALIDDATA; + + rsps = h266->sps[rpps->pps_seq_parameter_set_id]; + if (!rsps) + return AVERROR_INVALIDDATA; + + ret = decode_sps(ps, rsps, log_ctx); + if (ret < 0) + return ret; + + ret = decode_pps(ps, rpps); + if (ret < 0) + return ret; + + return 0; +} + +#define WEIGHT_TABLE(x) \ + w->nb_weights[L##x] = r->num_weights_l##x; \ + for (int i = 0; i < w->nb_weights[L##x]; i++) { \ + w->weight_flag[L##x][LUMA][i] = r->luma_weight_l##x##_flag[i]; \ + w->weight_flag[L##x][CHROMA][i] = r->chroma_weight_l##x##_flag[i]; \ + w->weight[L##x][LUMA][i] = denom[LUMA] + r->delta_luma_weight_l##x[i]; \ + w->offset[L##x][LUMA][i] = r->luma_offset_l##x[i]; \ + for (int j = CB; j <= CR; j++) { \ + w->weight[L##x][j][i] = denom[CHROMA] + r->delta_chroma_weight_l##x[i][j - 1]; \ + w->offset[L##x][j][i] = 128 + r->delta_chroma_offset_l##x[i][j - 1]; \ + w->offset[L##x][j][i] -= (128 * w->weight[L##x][j][i]) >> w->log2_denom[CHROMA]; \ + w->offset[L##x][j][i] = av_clip_intp2(w->offset[L##x][j][i], 7); \ + } \ + } \ + +static void pred_weight_table(PredWeightTable *w, const H266RawPredWeightTable *r) +{ + int denom[2]; + + w->log2_denom[LUMA] = r->luma_log2_weight_denom; + w->log2_denom[CHROMA] = w->log2_denom[LUMA] + r->delta_chroma_log2_weight_denom; + denom[LUMA] = 1 << w->log2_denom[LUMA]; + denom[CHROMA] = 1 << w->log2_denom[CHROMA]; + WEIGHT_TABLE(0) + WEIGHT_TABLE(1) +} + +// 8.3.1 Decoding process for picture order count +static int ph_compute_poc(const H266RawPictureHeader *ph, const H266RawSPS *sps, const int poc_tid0, const int is_clvss) +{ + const int max_poc_lsb = 1 << (sps->sps_log2_max_pic_order_cnt_lsb_minus4 + 4); + const int prev_poc_lsb = poc_tid0 % max_poc_lsb; + const int prev_poc_msb = poc_tid0 - prev_poc_lsb; + const int poc_lsb = ph->ph_pic_order_cnt_lsb; + int poc_msb; + + if (ph->ph_poc_msb_cycle_present_flag) { + poc_msb = ph->ph_poc_msb_cycle_val * max_poc_lsb; + } else if (is_clvss) { + poc_msb = 0; + } 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; + } + + return poc_msb + poc_lsb; +} + +static av_always_inline uint16_t lmcs_derive_lut_sample(uint16_t sample, + uint16_t *pivot1, uint16_t *pivot2, uint16_t *scale_coeff, const int idx, const int max) +{ + const int lut_sample = + pivot1[idx] + ((scale_coeff[idx] * (sample - pivot2[idx]) + (1<< 10)) >> 11); + return av_clip(lut_sample, 0, max - 1); +} + +//8.8.2.2 Inverse mapping process for a luma sample +static int lmcs_derive_lut(VVCLMCS *lmcs, const H266RawAPS *rlmcs, const H266RawSPS *sps) +{ + const int bit_depth = (sps->sps_bitdepth_minus8 + 8); + const int max = (1 << bit_depth); + const int org_cw = max / LMCS_MAX_BIN_SIZE; + const int shift = av_log2(org_cw); + const int off = 1 << (shift - 1); + int cw[LMCS_MAX_BIN_SIZE]; + uint16_t input_pivot[LMCS_MAX_BIN_SIZE]; + uint16_t scale_coeff[LMCS_MAX_BIN_SIZE]; + uint16_t inv_scale_coeff[LMCS_MAX_BIN_SIZE]; + int i, delta_crs; + if (bit_depth > LMCS_MAX_BIT_DEPTH) + return AVERROR_PATCHWELCOME; + + if (!rlmcs) + return AVERROR_INVALIDDATA; + + lmcs->min_bin_idx = rlmcs->lmcs_min_bin_idx; + lmcs->max_bin_idx = LMCS_MAX_BIN_SIZE - 1 - rlmcs->lmcs_min_bin_idx; + + memset(cw, 0, sizeof(cw)); + for (int i = lmcs->min_bin_idx; i <= lmcs->max_bin_idx; i++) + cw[i] = org_cw + (1 - 2 * rlmcs->lmcs_delta_sign_cw_flag[i]) * rlmcs->lmcs_delta_abs_cw[i]; + + delta_crs = (1 - 2 * rlmcs->lmcs_delta_sign_crs_flag) * rlmcs->lmcs_delta_abs_crs; + + lmcs->pivot[0] = 0; + for (i = 0; i < LMCS_MAX_BIN_SIZE; i++) { + input_pivot[i] = i * org_cw; + lmcs->pivot[i + 1] = lmcs->pivot[i] + cw[i]; + scale_coeff[i] = (cw[i] * (1 << 11) + off) >> shift; + if (cw[i] == 0) { + inv_scale_coeff[i] = 0; + lmcs->chroma_scale_coeff[i] = (1 << 11); + } else { + inv_scale_coeff[i] = org_cw * (1 << 11) / cw[i]; + lmcs->chroma_scale_coeff[i] = org_cw * (1 << 11) / (cw[i] + delta_crs); + } + } + + //derive lmcs_fwd_lut + for (uint16_t sample = 0; sample < max; sample++) { + const int idx_y = sample / org_cw; + const uint16_t fwd_sample = lmcs_derive_lut_sample(sample, lmcs->pivot, + input_pivot, scale_coeff, idx_y, max); + if (bit_depth > 8) + ((uint16_t *)lmcs->fwd_lut)[sample] = fwd_sample; + else + lmcs->fwd_lut[sample] = fwd_sample; + + } + + //derive lmcs_inv_lut + i = lmcs->min_bin_idx; + for (uint16_t sample = 0; sample < max; sample++) { + uint16_t inv_sample; + while (sample >= lmcs->pivot[i + 1] && i <= lmcs->max_bin_idx) + i++; + + inv_sample = lmcs_derive_lut_sample(sample, input_pivot, lmcs->pivot, + inv_scale_coeff, i, max); + + if (bit_depth > 8) + ((uint16_t *)lmcs->inv_lut)[sample] = inv_sample; + else + lmcs->inv_lut[sample] = inv_sample; + } + + return 0; +} + +static int ph_max_num_subblock_merge_cand(const H266RawSPS *sps, const H266RawPictureHeader *ph) +{ + if (sps->sps_affine_enabled_flag) + return 5 - sps->sps_five_minus_max_num_subblock_merge_cand; + return sps->sps_sbtmvp_enabled_flag && ph->ph_temporal_mvp_enabled_flag; +} + +static int ph_derive(VVCPH *ph, const H266RawSPS *sps, const H266RawPPS *pps, const int poc_tid0, const int is_clvss) +{ + ph->max_num_subblock_merge_cand = ph_max_num_subblock_merge_cand(sps, ph->r); + + ph->poc = ph_compute_poc(ph->r, sps, poc_tid0, is_clvss); + + if (pps->pps_wp_info_in_ph_flag) + pred_weight_table(&ph->pwt, &ph->r->ph_pred_weight_table); + + return 0; +} + +static int decode_ph(VVCFrameParamSets *fps, const H266RawPictureHeader *rph, void *rph_ref, + const int poc_tid0, const int is_clvss) +{ + int ret; + VVCPH *ph = &fps->ph; + const H266RawSPS *sps = fps->sps->r; + const H266RawPPS *pps = fps->pps->r; + + ph->r = rph; + ff_refstruct_replace(&ph->rref, rph_ref); + ret = ph_derive(ph, sps, pps, poc_tid0, is_clvss); + if (ret < 0) + return ret; + + return 0; +} + +static int decode_frame_ps(VVCFrameParamSets *fps, const VVCParamSets *ps, + const CodedBitstreamH266Context *h266, const int poc_tid0, const int is_clvss) +{ + const H266RawPictureHeader *ph = h266->ph; + const H266RawPPS *rpps; + int ret; + + if (!ph) + return AVERROR_INVALIDDATA; + + rpps = h266->pps[ph->ph_pic_parameter_set_id]; + if (!rpps) + return AVERROR_INVALIDDATA; + + ff_refstruct_replace(&fps->sps, ps->sps_list[rpps->pps_seq_parameter_set_id]); + ff_refstruct_replace(&fps->pps, ps->pps_list[rpps->pps_pic_parameter_set_id]); + + ret = decode_ph(fps, ph, h266->ph_ref, poc_tid0, is_clvss); + if (ret < 0) + return ret; + + if (ph->ph_explicit_scaling_list_enabled_flag) + ff_refstruct_replace(&fps->sl, ps->scaling_list[ph->ph_scaling_list_aps_id]); + + if (ph->ph_lmcs_enabled_flag) { + ret = lmcs_derive_lut(&fps->lmcs, ps->lmcs_list[ph->ph_lmcs_aps_id], fps->sps->r); + if (ret < 0) + return ret; + } + + for (int i = 0; i < FF_ARRAY_ELEMS(fps->alf_list); i++) + ff_refstruct_replace(&fps->alf_list[i], ps->alf_list[i]); + + return 0; +} + +static void decode_recovery_flag(VVCContext *s) +{ + if (IS_IDR(s)) + s->no_output_before_recovery_flag = 0; + else if (IS_CRA(s) || IS_GDR(s)) + s->no_output_before_recovery_flag = s->last_eos; +} + +static void decode_recovery_poc(VVCContext *s, const VVCPH *ph) +{ + if (s->no_output_before_recovery_flag) { + if (IS_GDR(s)) + s->gdr_recovery_point_poc = ph->poc + ph->r->ph_recovery_poc_cnt; + if (!GDR_IS_RECOVERED(s) && s->gdr_recovery_point_poc <= ph->poc) + GDR_SET_RECOVERED(s); + } +} + +int ff_vvc_decode_frame_ps(VVCFrameParamSets *fps, struct VVCContext *s) +{ + int ret = 0; + VVCParamSets *ps = &s->ps; + const CodedBitstreamH266Context *h266 = s->cbc->priv_data; + + ret = decode_ps(ps, h266, s->avctx); + if (ret < 0) + return ret; + + decode_recovery_flag(s); + ret = decode_frame_ps(fps, ps, h266, s->poc_tid0, IS_CLVSS(s)); + decode_recovery_poc(s, &fps->ph); + return ret; +} + +void ff_vvc_frame_ps_free(VVCFrameParamSets *fps) +{ + ff_refstruct_unref(&fps->sps); + ff_refstruct_unref(&fps->pps); + ff_refstruct_unref(&fps->ph.rref); + ff_refstruct_unref(&fps->sl); + for (int i = 0; i < FF_ARRAY_ELEMS(fps->alf_list); i++) + ff_refstruct_unref(&fps->alf_list[i]); +} + +void ff_vvc_ps_uninit(VVCParamSets *ps) +{ + int i; + + for (i = 0; i < FF_ARRAY_ELEMS(ps->scaling_list); i++) + ff_refstruct_unref(&ps->scaling_list[i]); + for (i = 0; i < FF_ARRAY_ELEMS(ps->lmcs_list); i++) + ff_refstruct_unref(&ps->lmcs_list[i]); + for (i = 0; i < FF_ARRAY_ELEMS(ps->alf_list); i++) + ff_refstruct_unref(&ps->alf_list[i]); + for (i = 0; i < FF_ARRAY_ELEMS(ps->sps_list); i++) + ff_refstruct_unref(&ps->sps_list[i]); + for (i = 0; i < FF_ARRAY_ELEMS(ps->pps_list); i++) + ff_refstruct_unref(&ps->pps_list[i]); +} + +enum { + APS_ALF, + APS_LMCS, + APS_SCALING, +}; + +static void alf_coeff(int16_t *coeff, + const uint8_t *abs, const uint8_t *sign, const int size) +{ + for (int i = 0; i < size; i++) + coeff[i] = (1 - 2 * sign[i]) * abs[i]; +} + +static void alf_coeff_cc(int16_t *coeff, + const uint8_t *mapped_abs, const uint8_t *sign) +{ + for (int i = 0; i < ALF_NUM_COEFF_CC; i++) { + int c = mapped_abs[i];; + if (c) + c = (1 - 2 * sign[i]) * (1 << (c - 1)); + coeff[i] = c; + } +} + +static void alf_luma(VVCALF *alf, const H266RawAPS *aps) +{ + if (!aps->alf_luma_filter_signal_flag) + return; + + for (int i = 0; i < ALF_NUM_FILTERS_LUMA; i++) { + const int ref = aps->alf_luma_coeff_delta_idx[i]; + const uint8_t *abs = aps->alf_luma_coeff_abs[ref]; + const uint8_t *sign = aps->alf_luma_coeff_sign[ref]; + + alf_coeff(alf->luma_coeff[i], abs, sign, ALF_NUM_COEFF_LUMA); + memcpy(alf->luma_clip_idx[i], aps->alf_luma_clip_idx[ref], + sizeof(alf->luma_clip_idx[i])); + } +} + +static void alf_chroma(VVCALF *alf, const H266RawAPS *aps) +{ + if (!aps->alf_chroma_filter_signal_flag) + return; + + alf->num_chroma_filters = aps->alf_chroma_num_alt_filters_minus1 + 1; + for (int i = 0; i < alf->num_chroma_filters; i++) { + const uint8_t *abs = aps->alf_chroma_coeff_abs[i]; + const uint8_t *sign = aps->alf_chroma_coeff_sign[i]; + + alf_coeff(alf->chroma_coeff[i], abs, sign, ALF_NUM_COEFF_CHROMA); + memcpy(alf->chroma_clip_idx[i], aps->alf_chroma_clip_idx[i], + sizeof(alf->chroma_clip_idx[i])); + } +} + +static void alf_cc(VVCALF *alf, const H266RawAPS *aps) +{ + const uint8_t (*abs[])[ALF_NUM_COEFF_CC] = + { aps->alf_cc_cb_mapped_coeff_abs, aps->alf_cc_cr_mapped_coeff_abs }; + const uint8_t (*sign[])[ALF_NUM_COEFF_CC] = + {aps->alf_cc_cb_coeff_sign, aps->alf_cc_cr_coeff_sign }; + const int signaled[] = { aps->alf_cc_cb_filter_signal_flag, aps->alf_cc_cr_filter_signal_flag}; + + alf->num_cc_filters[0] = aps->alf_cc_cb_filters_signalled_minus1 + 1; + alf->num_cc_filters[1] = aps->alf_cc_cr_filters_signalled_minus1 + 1; + + for (int idx = 0; idx < 2; idx++) { + if (signaled[idx]) { + for (int i = 0; i < alf->num_cc_filters[idx]; i++) + alf_coeff_cc(alf->cc_coeff[idx][i], abs[idx][i], sign[idx][i]); + } + } +} + +static void alf_derive(VVCALF *alf, const H266RawAPS *aps) +{ + alf_luma(alf, aps); + alf_chroma(alf, aps); + alf_cc(alf, aps); +} + +static int aps_decode_alf(const VVCALF **alf, const H266RawAPS *aps) +{ + VVCALF *a = ff_refstruct_allocz(sizeof(*a)); + if (!a) + return AVERROR(ENOMEM); + + alf_derive(a, aps); + ff_refstruct_replace(alf, a); + ff_refstruct_unref(&a); + + return 0; +} + +static int is_luma_list(const int id) +{ + return id % VVC_MAX_SAMPLE_ARRAYS == SL_START_4x4 || id == SL_START_64x64 + 1; +} + +static int derive_matrix_size(const int id) +{ + return id < SL_START_4x4 ? 2 : (id < SL_START_8x8 ? 4 : 8); +} + +// 7.4.3.20 Scaling list data semantics +static void scaling_derive(VVCScalingList *sl, const H266RawAPS *aps) +{ + for (int id = 0; id < SL_MAX_ID; id++) { + const int matrix_size = derive_matrix_size(id); + const int log2_size = log2(matrix_size); + const int list_size = matrix_size * matrix_size; + int coeff[SL_MAX_MATRIX_SIZE * SL_MAX_MATRIX_SIZE]; + const uint8_t *pred; + const int *scaling_list; + int dc = 0; + + if (aps->aps_chroma_present_flag || is_luma_list(id)) { + if (!aps->scaling_list_copy_mode_flag[id]) { + int next_coef = 0; + + if (id >= SL_START_16x16) + dc = next_coef = aps->scaling_list_dc_coef[id - SL_START_16x16]; + + for (int i = 0; i < list_size; i++) { + const int x = ff_vvc_diag_scan_x[3][3][i]; + const int y = ff_vvc_diag_scan_y[3][3][i]; + + if (!(id >= SL_START_64x64 && x >= 4 && y >= 4)) + next_coef += aps->scaling_list_delta_coef[id][i]; + coeff[i] = next_coef; + } + } + } + + //dc + if (id >= SL_START_16x16) { + if (!aps->scaling_list_copy_mode_flag[id] && !aps->scaling_list_pred_mode_flag[id]) { + sl->scaling_matrix_dc_rec[id - SL_START_16x16] = 8; + } else if (!aps->scaling_list_pred_id_delta[id]) { + sl->scaling_matrix_dc_rec[id - SL_START_16x16] = 16; + } else { + const int ref_id = id - aps->scaling_list_pred_id_delta[id]; + if (ref_id >= SL_START_16x16) + dc += sl->scaling_matrix_dc_rec[ref_id - SL_START_16x16]; + else + dc += sl->scaling_matrix_rec[ref_id][0]; + sl->scaling_matrix_dc_rec[id - SL_START_16x16] = dc & 255; + } + } + + //ac + scaling_list = aps->scaling_list_copy_mode_flag[id] ? ff_vvc_scaling_list0 : coeff; + if (!aps->scaling_list_copy_mode_flag[id] && !aps->scaling_list_pred_mode_flag[id]) + pred = ff_vvc_scaling_pred_8; + else if (!aps->scaling_list_pred_id_delta[id]) + pred = ff_vvc_scaling_pred_16; + else + pred = sl->scaling_matrix_rec[id - aps->scaling_list_pred_id_delta[id]]; + for (int i = 0; i < list_size; i++) { + const int x = ff_vvc_diag_scan_x[log2_size][log2_size][i]; + const int y = ff_vvc_diag_scan_y[log2_size][log2_size][i]; + const int off = y * matrix_size + x; + sl->scaling_matrix_rec[id][off] = (pred[off] + scaling_list[i]) & 255; + } + } +} + +static int aps_decode_scaling(const VVCScalingList **scaling, const H266RawAPS *aps) +{ + VVCScalingList *sl = ff_refstruct_allocz(sizeof(*sl)); + if (!sl) + return AVERROR(ENOMEM); + + scaling_derive(sl, aps); + ff_refstruct_replace(scaling, sl); + ff_refstruct_unref(&sl); + + return 0; +} + +int ff_vvc_decode_aps(VVCParamSets *ps, const CodedBitstreamUnit *unit) +{ + const H266RawAPS *aps = unit->content_ref; + int ret = 0; + + if (!aps) + return AVERROR_INVALIDDATA; + + switch (aps->aps_params_type) { + case APS_ALF: + ret = aps_decode_alf(&ps->alf_list[aps->aps_adaptation_parameter_set_id], aps); + break; + case APS_LMCS: + ff_refstruct_replace(&ps->lmcs_list[aps->aps_adaptation_parameter_set_id], aps); + break; + case APS_SCALING: + ret = aps_decode_scaling(&ps->scaling_list[aps->aps_adaptation_parameter_set_id], aps); + break; + } + + return ret; +} + +static void sh_slice_address(VVCSH *sh, const H266RawSPS *sps, const VVCPPS *pps) +{ + const int slice_address = sh->r->sh_slice_address; + + if (pps->r->pps_rect_slice_flag) { + int pic_level_slice_idx = slice_address; + for (int j = 0; j < sh->r->curr_subpic_idx; j++) + pic_level_slice_idx += pps->r->num_slices_in_subpic[j]; + sh->ctb_addr_in_curr_slice = pps->ctb_addr_in_slice + pps->slice_start_offset[pic_level_slice_idx]; + sh->num_ctus_in_curr_slice = pps->num_ctus_in_slice[pic_level_slice_idx]; + } else { + int tile_x = slice_address % pps->r->num_tile_columns; + int tile_y = slice_address / pps->r->num_tile_columns; + const int slice_start_ctb = pps->row_bd[tile_y] * pps->ctb_width + pps->col_bd[tile_x] * pps->r->row_height_val[tile_y]; + + sh->ctb_addr_in_curr_slice = pps->ctb_addr_in_slice + slice_start_ctb; + + sh->num_ctus_in_curr_slice = 0; + for (int tile_idx = slice_address; tile_idx <= slice_address + sh->r->sh_num_tiles_in_slice_minus1; tile_idx++) { + tile_x = tile_idx % pps->r->num_tile_columns; + tile_y = tile_idx / pps->r->num_tile_columns; + sh->num_ctus_in_curr_slice += pps->r->row_height_val[tile_y] * pps->r->col_width_val[tile_x]; + } + } +} + +static void sh_qp_y(VVCSH *sh, const H266RawPPS *pps, const H266RawPictureHeader *ph) +{ + const int init_qp = pps->pps_init_qp_minus26 + 26; + + if (!pps->pps_qp_delta_info_in_ph_flag) + sh->slice_qp_y = init_qp + sh->r->sh_qp_delta; + else + sh->slice_qp_y = init_qp + ph->ph_qp_delta; +} + +static void sh_inter(VVCSH *sh, const H266RawSPS *sps, const H266RawPPS *pps) +{ + const H266RawSliceHeader *rsh = sh->r; + + if (!pps->pps_wp_info_in_ph_flag && + ((pps->pps_weighted_pred_flag && IS_P(rsh)) || + (pps->pps_weighted_bipred_flag && IS_B(rsh)))) + pred_weight_table(&sh->pwt, &rsh->sh_pred_weight_table); +} + +static void sh_deblock_offsets(VVCSH *sh) +{ + const H266RawSliceHeader *r = sh->r; + + if (!r->sh_deblocking_filter_disabled_flag) { + sh->deblock.beta_offset[LUMA] = r->sh_luma_beta_offset_div2 << 1; + sh->deblock.tc_offset[LUMA] = r->sh_luma_tc_offset_div2 << 1; + sh->deblock.beta_offset[CB] = r->sh_cb_beta_offset_div2 << 1; + sh->deblock.tc_offset[CB] = r->sh_cb_tc_offset_div2 << 1; + sh->deblock.beta_offset[CR] = r->sh_cr_beta_offset_div2 << 1; + sh->deblock.tc_offset[CR] = r->sh_cr_tc_offset_div2 << 1; + } +} + +static void sh_partition_constraints(VVCSH *sh, const H266RawSPS *sps, const H266RawPictureHeader *ph) +{ + const int min_cb_log2_size_y = sps->sps_log2_min_luma_coding_block_size_minus2 + 2; + int min_qt_log2_size_y[2]; + + if (IS_I(sh->r)) { + min_qt_log2_size_y[LUMA] = (min_cb_log2_size_y + ph->ph_log2_diff_min_qt_min_cb_intra_slice_luma); + min_qt_log2_size_y[CHROMA] = (min_cb_log2_size_y + ph->ph_log2_diff_min_qt_min_cb_intra_slice_chroma); + + sh->max_bt_size[LUMA] = 1 << (min_qt_log2_size_y[LUMA] + ph->ph_log2_diff_max_bt_min_qt_intra_slice_luma); + sh->max_bt_size[CHROMA] = 1 << (min_qt_log2_size_y[CHROMA]+ ph->ph_log2_diff_max_bt_min_qt_intra_slice_chroma); + + sh->max_tt_size[LUMA] = 1 << (min_qt_log2_size_y[LUMA] + ph->ph_log2_diff_max_tt_min_qt_intra_slice_luma); + sh->max_tt_size[CHROMA] = 1 << (min_qt_log2_size_y[CHROMA]+ ph->ph_log2_diff_max_tt_min_qt_intra_slice_chroma); + + sh->max_mtt_depth[LUMA] = ph->ph_max_mtt_hierarchy_depth_intra_slice_luma; + sh->max_mtt_depth[CHROMA] = ph->ph_max_mtt_hierarchy_depth_intra_slice_chroma; + + sh->cu_qp_delta_subdiv = ph->ph_cu_qp_delta_subdiv_intra_slice; + sh->cu_chroma_qp_offset_subdiv = ph->ph_cu_chroma_qp_offset_subdiv_intra_slice; + } else { + for (int i = LUMA; i <= CHROMA; i++) { + min_qt_log2_size_y[i] = (min_cb_log2_size_y + ph->ph_log2_diff_min_qt_min_cb_inter_slice); + sh->max_bt_size[i] = 1 << (min_qt_log2_size_y[i] + ph->ph_log2_diff_max_bt_min_qt_inter_slice); + sh->max_tt_size[i] = 1 << (min_qt_log2_size_y[i] + ph->ph_log2_diff_max_tt_min_qt_inter_slice); + sh->max_mtt_depth[i] = ph->ph_max_mtt_hierarchy_depth_inter_slice; + } + + sh->cu_qp_delta_subdiv = ph->ph_cu_qp_delta_subdiv_inter_slice; + sh->cu_chroma_qp_offset_subdiv = ph->ph_cu_chroma_qp_offset_subdiv_inter_slice; + } + + sh->min_qt_size[LUMA] = 1 << min_qt_log2_size_y[LUMA]; + sh->min_qt_size[CHROMA] = 1 << min_qt_log2_size_y[CHROMA]; +} + +static void sh_entry_points(VVCSH *sh, const H266RawSPS *sps, const VVCPPS *pps) +{ + if (sps->sps_entry_point_offsets_present_flag) { + for (int i = 1, j = 0; i < sh->num_ctus_in_curr_slice; i++) { + const int pre_ctb_addr_x = sh->ctb_addr_in_curr_slice[i - 1] % pps->ctb_width; + const int pre_ctb_addr_y = sh->ctb_addr_in_curr_slice[i - 1] / pps->ctb_width; + const int ctb_addr_x = sh->ctb_addr_in_curr_slice[i] % pps->ctb_width; + const int ctb_addr_y = sh->ctb_addr_in_curr_slice[i] / pps->ctb_width; + if (pps->ctb_to_row_bd[ctb_addr_y] != pps->ctb_to_row_bd[pre_ctb_addr_y] || + pps->ctb_to_col_bd[ctb_addr_x] != pps->ctb_to_col_bd[pre_ctb_addr_x] || + (ctb_addr_y != pre_ctb_addr_y && sps->sps_entropy_coding_sync_enabled_flag)) { + sh->entry_point_start_ctu[j++] = i; + } + } + } +} + +static int sh_derive(VVCSH *sh, const VVCFrameParamSets *fps) +{ + const H266RawSPS *sps = fps->sps->r; + const H266RawPPS *pps = fps->pps->r; + const H266RawPictureHeader *ph = fps->ph.r; + + sh_slice_address(sh, sps, fps->pps); + sh_inter(sh, sps, pps); + sh_qp_y(sh, pps, ph); + sh_deblock_offsets(sh); + sh_partition_constraints(sh, sps, ph); + sh_entry_points(sh, sps, fps->pps); + + return 0; +} + +int ff_vvc_decode_sh(VVCSH *sh, const VVCFrameParamSets *fps, const CodedBitstreamUnit *unit) +{ + int ret; + + if (!fps->sps || !fps->pps) + return AVERROR_INVALIDDATA; + + ff_refstruct_replace(&sh->r, unit->content_ref); + + ret = sh_derive(sh, fps); + if (ret < 0) + return ret; + + return 0; +} diff --git a/libavcodec/vvc/vvc_ps.h b/libavcodec/vvc/vvc_ps.h new file mode 100644 index 0000000000..ede4e74009 --- /dev/null +++ b/libavcodec/vvc/vvc_ps.h @@ -0,0 +1,263 @@ +/* + * VVC parameter set parser + * + * Copyright (C) 2023 Nuo Mi + * + * 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_VVC_VVC_PS_H +#define AVCODEC_VVC_VVC_PS_H + +#include "libavcodec/cbs_h266.h" +#include "libavcodec/vvc.h" + +#define IS_IDR(s) ((s)->vcl_unit_type == VVC_IDR_W_RADL || (s)->vcl_unit_type == VVC_IDR_N_LP) +#define IS_CRA(s) ((s)->vcl_unit_type == VVC_CRA_NUT) +#define IS_IRAP(s) (IS_IDR(s) || IS_CRA(s)) +#define IS_GDR(s) ((s)->vcl_unit_type == VVC_GDR_NUT) +#define IS_CVSS(s) (IS_IRAP(s)|| IS_GDR(s)) +#define IS_CLVSS(s) (IS_CVSS(s) && s->no_output_before_recovery_flag) +#define IS_RASL(s) ((s)->vcl_unit_type == VVC_RASL_NUT) +#define IS_RADL(s) ((s)->vcl_unit_type == VVC_RADL_NUT) + +#define IS_I(rsh) ((rsh)->sh_slice_type == VVC_SLICE_TYPE_I) +#define IS_P(rsh) ((rsh)->sh_slice_type == VVC_SLICE_TYPE_P) +#define IS_B(rsh) ((rsh)->sh_slice_type == VVC_SLICE_TYPE_B) + +#define INV_POC INT_MIN +#define GDR_IS_RECOVERED(s) (s->gdr_recovery_point_poc == INV_POC) +#define GDR_SET_RECOVERED(s) (s->gdr_recovery_point_poc = INV_POC) + +#define LMCS_MAX_BIT_DEPTH 12 +#define LMCS_MAX_LUT_SIZE (1 << LMCS_MAX_BIT_DEPTH) +#define LMCS_MAX_BIN_SIZE 16 +#define LADF_MAX_INTERVAL 5 + +enum { + CHROMA_FORMAT_MONO, + CHROMA_FORMAT_420, + CHROMA_FORMAT_422, + CHROMA_FORMAT_444, +}; + +typedef struct VVCSPS { + const H266RawSPS *r; ///< RefStruct reference + + //derived values + uint16_t width; + uint16_t height; + uint8_t hshift[VVC_MAX_SAMPLE_ARRAYS]; + uint8_t vshift[VVC_MAX_SAMPLE_ARRAYS]; + uint32_t max_pic_order_cnt_lsb; ///< MaxPicOrderCntLsb + + uint8_t pixel_shift; + enum AVPixelFormat pix_fmt; + + uint8_t bit_depth; ///< BitDepth + uint8_t qp_bd_offset; ///< QpBdOffset + uint8_t ctb_log2_size_y; ///< CtbLog2SizeY + uint8_t ctb_size_y; ///< CtbSizeY + uint8_t min_cb_log2_size_y; ///< MinCbLog2SizeY + uint8_t min_cb_size_y; ///< MinCbSizeY + uint8_t max_tb_size_y; ///< MaxTbSizeY + uint8_t max_ts_size; ///< MaxTsSize + uint8_t max_num_merge_cand; ///< MaxNumMergeCand + uint8_t max_num_ibc_merge_cand; ///< MaxNumIbcMergeCand + uint8_t max_num_gpm_merge_cand; ///< MaxNumGpmMergeCand + uint8_t num_ladf_intervals; ///< sps_num_ladf_intervals_minus2 + 2; + uint32_t ladf_interval_lower_bound[LADF_MAX_INTERVAL]; ///< SpsLadfIntervalLowerBound[] + uint8_t log2_parallel_merge_level; ///< sps_log2_parallel_merge_level_minus2 + 2; + uint8_t log2_transform_range; ///< Log2TransformRange + int8_t chroma_qp_table[3][VVC_MAX_POINTS_IN_QP_TABLE]; ///< ChromaQpTable +} VVCSPS; + +typedef struct DBParams { + int8_t beta_offset[VVC_MAX_SAMPLE_ARRAYS]; + int8_t tc_offset[VVC_MAX_SAMPLE_ARRAYS]; +} DBParams; + +typedef struct VVCPPS { + const H266RawPPS *r; ///< RefStruct reference + + //derived value; + int8_t chroma_qp_offset[3]; ///< pps_cb_qp_offset, pps_cr_qp_offset, pps_joint_cbcr_qp_offset_value + int8_t chroma_qp_offset_list[6][3]; ///< pps_cb_qp_offset_list, pps_cr_qp_offset_list, pps_joint_cbcr_qp_offset_list + + uint16_t width; + uint16_t height; + + uint16_t slice_start_offset[VVC_MAX_SLICES]; + uint16_t num_ctus_in_slice [VVC_MAX_SLICES]; + + uint16_t min_cb_width; + uint16_t min_cb_height; + + uint16_t ctb_width; + uint16_t ctb_height; + uint32_t ctb_count; + + uint16_t min_pu_width; + uint16_t min_pu_height; + uint16_t min_tu_width; + uint16_t min_tu_height; + + uint32_t *ctb_addr_in_slice; ///< CtbAddrInCurrSlice for entire picture + uint16_t *col_bd; + uint16_t *row_bd; + uint16_t *ctb_to_col_bd; + uint16_t *ctb_to_row_bd; + + uint16_t width32; ///< width in 32 pixels + uint16_t height32; ///< height in 32 pixels + uint16_t width64; ///< width in 64 pixels + uint16_t height64; ///< height in 64 pixels + + uint16_t ref_wraparound_offset; ///< PpsRefWraparoundOffset + +} VVCPPS; + +#define MAX_WEIGHTS 15 +typedef struct PredWeightTable { + uint8_t log2_denom[2]; ///< luma_log2_weight_denom, ChromaLog2WeightDenom + + uint8_t nb_weights[2]; ///< num_l0_weights, num_l1_weights + uint8_t weight_flag[2][2][MAX_WEIGHTS]; ///< luma_weight_l0_flag, chroma_weight_l0_flag, + ///< luma_weight_l1_flag, chroma_weight_l1_flag, + int16_t weight[2][VVC_MAX_SAMPLE_ARRAYS][MAX_WEIGHTS]; ///< LumaWeightL0, LumaWeightL1, ChromaWeightL0, ChromaWeightL1 + int16_t offset[2][VVC_MAX_SAMPLE_ARRAYS][MAX_WEIGHTS]; ///< luma_offset_l0, luma_offset_l1, ChromaOffsetL0, ChromaOffsetL1 +} PredWeightTable; + +typedef struct VVCPH { + const H266RawPictureHeader *r; + void *rref; ///< RefStruct reference, backing ph above + + //derived values + uint32_t max_num_subblock_merge_cand; ///< MaxNumSubblockMergeCand + int32_t poc; ///< PicOrderCntVal + PredWeightTable pwt; +} VVCPH; + +#define ALF_NUM_FILTERS_LUMA 25 +#define ALF_NUM_FILTERS_CHROMA 8 +#define ALF_NUM_FILTERS_CC 5 + +#define ALF_NUM_COEFF_LUMA 12 +#define ALF_NUM_COEFF_CHROMA 6 +#define ALF_NUM_COEFF_CC 7 + +typedef struct VVCALF { + int16_t luma_coeff [ALF_NUM_FILTERS_LUMA][ALF_NUM_COEFF_LUMA]; + uint8_t luma_clip_idx [ALF_NUM_FILTERS_LUMA][ALF_NUM_COEFF_LUMA]; + + uint8_t num_chroma_filters; + int16_t chroma_coeff [ALF_NUM_FILTERS_CHROMA][ALF_NUM_COEFF_CHROMA]; + uint8_t chroma_clip_idx[ALF_NUM_FILTERS_CHROMA][ALF_NUM_COEFF_CHROMA]; + + uint8_t num_cc_filters[2]; ///< alf_cc_cb_filters_signalled_minus1 + 1, alf_cc_cr_filters_signalled_minus1 + 1 + int16_t cc_coeff[2][ALF_NUM_FILTERS_CC][ALF_NUM_COEFF_CC]; +} VVCALF; + +enum { + SL_START_2x2 = 0, + SL_START_4x4 = 2, + SL_START_8x8 = 8, + SL_START_16x16 = 14, + SL_START_32x32 = 20, + SL_START_64x64 = 26, + SL_MAX_ID = 28, +}; + +#define SL_MAX_MATRIX_SIZE 8 + +typedef struct VVCScalingList { + uint8_t scaling_matrix_rec[SL_MAX_ID][SL_MAX_MATRIX_SIZE * SL_MAX_MATRIX_SIZE]; ///< ScalingMatrixRec + uint8_t scaling_matrix_dc_rec[SL_MAX_ID - SL_START_16x16]; ///< ScalingMatrixDcRec[refId − 14] +} VVCScalingList; + +typedef struct VVCLMCS { + uint8_t min_bin_idx; + uint8_t max_bin_idx; + + //*2 for high depth + uint8_t fwd_lut[LMCS_MAX_LUT_SIZE * 2]; + uint8_t inv_lut[LMCS_MAX_LUT_SIZE * 2]; + + uint16_t pivot[LMCS_MAX_BIN_SIZE + 1]; + uint16_t chroma_scale_coeff[LMCS_MAX_BIN_SIZE]; +} VVCLMCS; + +#define VVC_MAX_ALF_COUNT 8 +#define VVC_MAX_LMCS_COUNT 4 +#define VVC_MAX_SL_COUNT 8 + +typedef struct VVCParamSets { + const VVCSPS *sps_list[VVC_MAX_SPS_COUNT]; ///< RefStruct reference + const VVCPPS *pps_list[VVC_MAX_PPS_COUNT]; ///< RefStruct reference + const VVCALF *alf_list[VVC_MAX_ALF_COUNT]; ///< RefStruct reference + const H266RawAPS *lmcs_list[VVC_MAX_LMCS_COUNT]; ///< RefStruct reference + const VVCScalingList *scaling_list[VVC_MAX_SL_COUNT]; ///< RefStruct reference +} VVCParamSets; + +typedef struct VVCFrameParamSets { + const VVCSPS *sps; ///< RefStruct reference + const VVCPPS *pps; ///< RefStruct reference + VVCPH ph; + const VVCALF *alf_list[VVC_MAX_ALF_COUNT]; ///< RefStruct reference + VVCLMCS lmcs; + const VVCScalingList *sl; ///< RefStruct reference +} VVCFrameParamSets; + +typedef struct VVCSH { + const H266RawSliceHeader *r; ///< RefStruct reference + + // derived values + // ctu address + uint32_t num_ctus_in_curr_slice; ///< NumCtusInCurrSlice + const uint32_t* ctb_addr_in_curr_slice; ///< CtbAddrInCurrSlice + + // inter + PredWeightTable pwt; + int8_t ref_idx_sym[2]; ///< RefIdxSymL0, RefIdxSymL1 + + // qp_y + int8_t slice_qp_y; ///< SliceQpY + + // deblock_offsets + DBParams deblock; + + // partition constrains + uint8_t min_qt_size[2]; ///< MinQtSizeY, MinQtSizeC + uint8_t max_bt_size[2]; ///< MaxBtSizeY, MaxBtSizeC + uint8_t max_tt_size[2]; ///< MaxTtSizeY, MaxTtSizeC + uint8_t max_mtt_depth[2]; ///< MaxMttDepthY, MaxMttDepthC + uint8_t cu_qp_delta_subdiv; ///< CuQpDeltaSubdiv + uint8_t cu_chroma_qp_offset_subdiv; ///< CuChromaQpOffsetSubdiv + + // entries + uint32_t entry_point_start_ctu[VVC_MAX_ENTRY_POINTS]; ///< entry point start in ctu_addr +} VVCSH; + +struct VVCContext; + +int ff_vvc_decode_frame_ps(VVCFrameParamSets *fps, struct VVCContext *s); +int ff_vvc_decode_aps(VVCParamSets *ps, const CodedBitstreamUnit *unit); +int ff_vvc_decode_sh(VVCSH *sh, const VVCFrameParamSets *ps, const CodedBitstreamUnit *unit); +void ff_vvc_frame_ps_free(VVCFrameParamSets *fps); +void ff_vvc_ps_uninit(VVCParamSets *ps); + +#endif /* AVCODEC_VVC_VVC_PS_H */ diff --git a/libavcodec/vvc/vvcdec.h b/libavcodec/vvc/vvcdec.h index 720d585fd4..6b1021a3be 100644 --- a/libavcodec/vvc/vvcdec.h +++ b/libavcodec/vvc/vvcdec.h @@ -26,6 +26,8 @@ #include "libavcodec/vvc.h" +#include "vvc_ps.h" + #define LUMA 0 #define CHROMA 1 #define CB 1 @@ -175,6 +177,11 @@ typedef struct VVCFrameContext { typedef struct VVCContext { struct AVCodecContext *avctx; + CodedBitstreamContext *cbc; + CodedBitstreamFragment current_frame; + + VVCParamSets ps; + int temporal_id; ///< temporal_id_plus1 - 1 int poc_tid0;