| /* |
| * 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/mem.h" |
| #include "libavutil/pixdesc.h" |
| #include "libavcodec/refstruct.h" |
| #include "data.h" |
| #include "ps.h" |
| #include "dec.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; |
| |
| 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 = 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); |
| |
| if (!sps) |
| return NULL; |
| |
| 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, int is_clvss) |
| { |
| const int sps_id = rsps->sps_seq_parameter_set_id; |
| const VVCSPS *old_sps = ps->sps_list[sps_id]; |
| const VVCSPS *sps; |
| |
| if (is_clvss) { |
| ps->sps_id_used = 0; |
| } |
| |
| if (old_sps) { |
| if (old_sps->r == rsps || !memcmp(old_sps->r, rsps, sizeof(*old_sps->r))) |
| return 0; |
| else if (ps->sps_id_used & (1 << sps_id)) |
| return AVERROR_INVALIDDATA; |
| } |
| |
| sps = sps_alloc(rsps, log_ctx); |
| if (!sps) |
| return AVERROR(ENOMEM); |
| |
| ff_refstruct_unref(&ps->sps_list[sps_id]); |
| ps->sps_list[sps_id] = sps; |
| ps->sps_id_used |= (1 << sps_id); |
| |
| 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]; |
| } |
| pps->col_bd[r->num_tile_columns] = pps->ctb_to_col_bd[pps->ctb_width] = pps->ctb_width; |
| |
| 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]; |
| } |
| pps->row_bd[r->num_tile_rows] = pps->ctb_to_row_bd[pps->ctb_height] = pps->ctb_height; |
| |
| 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 *rx, int *ry, const int tile_x, const int tile_y, const VVCPPS *pps) |
| { |
| *rx = pps->col_bd[tile_x]; |
| *ry = pps->row_bd[tile_y]; |
| } |
| |
| static int ctu_rs(const int rx, const int ry, const VVCPPS *pps) |
| { |
| return pps->ctb_width * ry + rx; |
| } |
| |
| static int pps_add_ctus(VVCPPS *pps, int *off, const int rx, const int ry, |
| 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(rx + x, ry + y, pps); |
| (*off)++; |
| } |
| } |
| return *off - start; |
| } |
| |
| static void pps_single_slice_picture(VVCPPS *pps, int *off) |
| { |
| for (int j = 0; j < pps->r->num_tile_rows; j++) { |
| for (int i = 0; i < pps->r->num_tile_columns; i++) { |
| pps->num_ctus_in_slice[0] = pps_add_ctus(pps, off, |
| pps->col_bd[i], pps->row_bd[j], |
| pps->r->col_width_val[i], pps->r->row_height_val[j]); |
| } |
| } |
| } |
| |
| static void subpic_tiles(int *tile_x, int *tile_y, int *tile_x_end, int *tile_y_end, |
| const VVCSPS *sps, const VVCPPS *pps, const int i) |
| { |
| const int rx = sps->r->sps_subpic_ctu_top_left_x[i]; |
| const int ry = sps->r->sps_subpic_ctu_top_left_y[i]; |
| |
| *tile_x = *tile_y = 0; |
| |
| while (pps->col_bd[*tile_x] != rx) |
| (*tile_x)++; |
| |
| while (pps->row_bd[*tile_y] != ry) |
| (*tile_y)++; |
| |
| *tile_x_end = (*tile_x); |
| *tile_y_end = (*tile_y); |
| |
| while (pps->col_bd[*tile_x_end] < rx + sps->r->sps_subpic_width_minus1[i] + 1) |
| (*tile_x_end)++; |
| |
| while (pps->row_bd[*tile_y_end] < ry + sps->r->sps_subpic_height_minus1[i] + 1) |
| (*tile_y_end)++; |
| } |
| |
| static void pps_subpic_less_than_one_tile_slice(VVCPPS *pps, const VVCSPS *sps, const int i, const int tx, const int ty, int *off) |
| { |
| pps->num_ctus_in_slice[i] = pps_add_ctus(pps, off, |
| pps->col_bd[tx], pps->row_bd[ty], |
| pps->r->col_width_val[tx], sps->r->sps_subpic_height_minus1[i] + 1); |
| } |
| |
| static void pps_subpic_one_or_more_tiles_slice(VVCPPS *pps, const int tile_x, const int tile_y, const int x_end, const int y_end, const int i, int *off) |
| { |
| for (int ty = tile_y; ty < y_end; ty++) { |
| for (int tx = tile_x; tx < x_end; tx++) { |
| pps->num_ctus_in_slice[i] += pps_add_ctus(pps, off, |
| pps->col_bd[tx], pps->row_bd[ty], |
| pps->r->col_width_val[tx], pps->r->row_height_val[ty]); |
| } |
| } |
| } |
| |
| static void pps_subpic_slice(VVCPPS *pps, const VVCSPS *sps, const int i, int *off) |
| { |
| int tx, ty, x_end, y_end; |
| |
| pps->slice_start_offset[i] = *off; |
| pps->num_ctus_in_slice[i] = 0; |
| |
| subpic_tiles(&tx, &ty, &x_end, &y_end, sps, pps, i); |
| if (ty + 1 == y_end && sps->r->sps_subpic_height_minus1[i] + 1 < pps->r->row_height_val[ty]) |
| pps_subpic_less_than_one_tile_slice(pps, sps, i, tx, ty, off); |
| else |
| pps_subpic_one_or_more_tiles_slice(pps, tx, ty, x_end, y_end, i, off); |
| } |
| |
| static void pps_single_slice_per_subpic(VVCPPS *pps, const VVCSPS *sps, int *off) |
| { |
| if (!sps->r->sps_subpic_info_present_flag) { |
| pps_single_slice_picture(pps, off); |
| } else { |
| for (int i = 0; i < pps->r->pps_num_slices_in_pic_minus1 + 1; i++) |
| pps_subpic_slice(pps, sps, i, off); |
| } |
| } |
| |
| static int pps_one_tile_slices(VVCPPS *pps, const int tile_idx, int i, int *off) |
| { |
| const H266RawPPS *r = pps->r; |
| int rx, ry, ctu_y_end, tile_x, tile_y; |
| |
| tile_xy(&tile_x, &tile_y, tile_idx, pps); |
| ctu_xy(&rx, &ry, tile_x, tile_y, pps); |
| ctu_y_end = ry + r->row_height_val[tile_y]; |
| while (ry < ctu_y_end) { |
| pps->slice_start_offset[i] = *off; |
| pps->num_ctus_in_slice[i] = pps_add_ctus(pps, off, rx, ry, |
| r->col_width_val[tile_x], r->slice_height_in_ctus[i]); |
| ry += 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 rx, ry, 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(&rx, &ry, tx, ty, pps); |
| pps->num_ctus_in_slice[i] += pps_add_ctus(pps, off, rx, ry, |
| r->col_width_val[tx], r->row_height_val[ty]); |
| } |
| } |
| } |
| |
| static void pps_rect_slice(VVCPPS *pps, const VVCSPS *sps) |
| { |
| const H266RawPPS *r = pps->r; |
| int tile_idx = 0, off = 0; |
| |
| if (r->pps_single_slice_per_subpic_flag) { |
| pps_single_slice_per_subpic(pps, sps, &off); |
| return; |
| } |
| |
| 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 rx, ry, 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(&rx, &ry, tile_x, tile_y, pps); |
| pps_add_ctus(pps, &off, rx, ry, r->col_width_val[tile_x], r->row_height_val[tile_y]); |
| } |
| } |
| } |
| |
| static int pps_slice_map(VVCPPS *pps, const VVCSPS *sps) |
| { |
| 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, sps); |
| 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 void pps_subpic(VVCPPS *pps, const VVCSPS *sps) |
| { |
| const H266RawSPS *rsps = sps->r; |
| for (int i = 0; i < rsps->sps_num_subpics_minus1 + 1; i++) { |
| if (rsps->sps_subpic_treated_as_pic_flag[i]) { |
| pps->subpic_x[i] = rsps->sps_subpic_ctu_top_left_x[i] << sps->ctb_log2_size_y; |
| pps->subpic_y[i] = rsps->sps_subpic_ctu_top_left_y[i] << sps->ctb_log2_size_y; |
| pps->subpic_width[i] = FFMIN(pps->width - pps->subpic_x[i], (rsps->sps_subpic_width_minus1[i] + 1) << sps->ctb_log2_size_y); |
| pps->subpic_height[i] = FFMIN(pps->height - pps->subpic_y[i], (rsps->sps_subpic_height_minus1[i] + 1) << sps->ctb_log2_size_y); |
| } else { |
| pps->subpic_x[i] = 0; |
| pps->subpic_y[i] = 0; |
| pps->subpic_width[i] = pps->width; |
| pps->subpic_height[i] = pps->height; |
| } |
| } |
| } |
| |
| 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, sps); |
| if (ret < 0) |
| return ret; |
| |
| pps_ref_wraparound_offset(pps, sps); |
| pps_subpic(pps, sps); |
| |
| return 0; |
| } |
| |
| static void pps_free(FFRefStructOpaque opaque, void *obj) |
| { |
| VVCPPS *pps = 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_unref(&ps->pps_list[pps_id]); |
| ps->pps_list[pps_id] = pps; |
| |
| return ret; |
| } |
| |
| static int decode_ps(VVCParamSets *ps, const CodedBitstreamH266Context *h266, void *log_ctx, int is_clvss) |
| { |
| 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, is_clvss); |
| 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) |
| lmcs->fwd_lut.u16[sample] = fwd_sample; |
| else |
| lmcs->fwd_lut.u8 [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 (i <= lmcs->max_bin_idx && sample >= lmcs->pivot[i + 1]) |
| i++; |
| |
| inv_sample = lmcs_derive_lut_sample(sample, input_pivot, lmcs->pivot, |
| inv_scale_coeff, i, max); |
| |
| if (bit_depth > 8) |
| lmcs->inv_lut.u16[sample] = inv_sample; |
| else |
| lmcs->inv_lut.u8 [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 = 1; |
| 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; |
| int is_clvss; |
| |
| decode_recovery_flag(s); |
| is_clvss = IS_CLVSS(s); |
| |
| ret = decode_ps(ps, h266, s->avctx, is_clvss); |
| if (ret < 0) |
| return ret; |
| |
| ret = decode_frame_ps(fps, ps, h266, s->poc_tid0, is_clvss); |
| 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) |
| { |
| for (int i = 0; i < FF_ARRAY_ELEMS(ps->scaling_list); i++) |
| ff_refstruct_unref(&ps->scaling_list[i]); |
| for (int i = 0; i < FF_ARRAY_ELEMS(ps->lmcs_list); i++) |
| ff_refstruct_unref(&ps->lmcs_list[i]); |
| for (int i = 0; i < FF_ARRAY_ELEMS(ps->alf_list); i++) |
| ff_refstruct_unref(&ps->alf_list[i]); |
| for (int i = 0; i < FF_ARRAY_ELEMS(ps->sps_list); i++) |
| ff_refstruct_unref(&ps->sps_list[i]); |
| for (int i = 0; i < FF_ARRAY_ELEMS(ps->pps_list); i++) |
| ff_refstruct_unref(&ps->pps_list[i]); |
| } |
| |
| 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 = av_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 VVC_ASP_TYPE_ALF: |
| ret = aps_decode_alf(&ps->alf_list[aps->aps_adaptation_parameter_set_id], aps); |
| break; |
| case VVC_ASP_TYPE_LMCS: |
| ff_refstruct_replace(&ps->lmcs_list[aps->aps_adaptation_parameter_set_id], aps); |
| break; |
| case VVC_ASP_TYPE_SCALING: |
| ret = aps_decode_scaling(&ps->scaling_list[aps->aps_adaptation_parameter_set_id], aps); |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static int sh_alf_aps(const VVCSH *sh, const VVCFrameParamSets *fps) |
| { |
| if (!sh->r->sh_alf_enabled_flag) |
| return 0; |
| |
| for (int i = 0; i < sh->r->sh_num_alf_aps_ids_luma; i++) { |
| const VVCALF *alf_aps_luma = fps->alf_list[sh->r->sh_alf_aps_id_luma[i]]; |
| if (!alf_aps_luma) |
| return AVERROR_INVALIDDATA; |
| } |
| |
| if (sh->r->sh_alf_cb_enabled_flag || sh->r->sh_alf_cr_enabled_flag) { |
| const VVCALF *alf_aps_chroma = fps->alf_list[sh->r->sh_alf_aps_id_chroma]; |
| if (!alf_aps_chroma) |
| return AVERROR_INVALIDDATA; |
| } |
| |
| if (fps->sps->r->sps_ccalf_enabled_flag) { |
| if (sh->r->sh_alf_cc_cb_enabled_flag) { |
| const VVCALF *alf_aps_cc_cr = fps->alf_list[sh->r->sh_alf_cc_cb_aps_id]; |
| if (!alf_aps_cc_cr) |
| return AVERROR_INVALIDDATA; |
| } |
| if (sh->r->sh_alf_cc_cr_enabled_flag) { |
| const VVCALF *alf_aps_cc_cr = fps->alf_list[sh->r->sh_alf_cc_cr_aps_id]; |
| if (!alf_aps_cc_cr) |
| return AVERROR_INVALIDDATA; |
| } |
| } |
| |
| return 0; |
| } |
| |
| 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 * 2; |
| sh->deblock.tc_offset[LUMA] = r->sh_luma_tc_offset_div2 * 2; |
| sh->deblock.beta_offset[CB] = r->sh_cb_beta_offset_div2 * 2; |
| sh->deblock.tc_offset[CB] = r->sh_cb_tc_offset_div2 * 2; |
| sh->deblock.beta_offset[CR] = r->sh_cr_beta_offset_div2 * 2; |
| sh->deblock.tc_offset[CR] = r->sh_cr_tc_offset_div2 * 2; |
| } |
| } |
| |
| 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; |
| int ret; |
| |
| sh_slice_address(sh, sps, fps->pps); |
| ret = sh_alf_aps(sh, fps); |
| if (ret < 0) |
| return ret; |
| 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; |
| } |
