/* * Copyright (c) 2017, Alliance for Open Media. All rights reserved * * This source code is subject to the terms of the BSD 2 Clause License and * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License * was not distributed with this source code in the LICENSE file, you can * obtain it at www.aomedia.org/license/software. If the Alliance for Open * Media Patent License 1.0 was not distributed with this source code in the * PATENTS file, you can obtain it at www.aomedia.org/license/patent. */ #include "av1/common/scan.h" #include "av1/common/blockd.h" #include "av1/common/idct.h" #include "av1/common/pred_common.h" #include "av1/encoder/bitstream.h" #include "av1/encoder/encodeframe.h" #include "av1/encoder/cost.h" #include "av1/encoder/encodetxb.h" #include "av1/encoder/rdopt.h" #include "av1/encoder/subexp.h" #include "av1/encoder/tokenize.h" #define TEST_OPTIMIZE_TXB 0 void av1_alloc_txb_buf(AV1_COMP *cpi) { #if 0 AV1_COMMON *cm = &cpi->common; int mi_block_size = 1 << MI_SIZE_LOG2; // TODO(angiebird): Make sure cm->subsampling_x/y is set correctly, and then // use precise buffer size according to cm->subsampling_x/y int pixel_stride = mi_block_size * cm->mi_cols; int pixel_height = mi_block_size * cm->mi_rows; int i; for (i = 0; i < MAX_MB_PLANE; ++i) { CHECK_MEM_ERROR( cm, cpi->tcoeff_buf[i], aom_malloc(sizeof(*cpi->tcoeff_buf[i]) * pixel_stride * pixel_height)); } #else AV1_COMMON *cm = &cpi->common; int size = ((cm->mi_rows >> MAX_MIB_SIZE_LOG2) + 1) * ((cm->mi_cols >> MAX_MIB_SIZE_LOG2) + 1); av1_free_txb_buf(cpi); // TODO(jingning): This should be further reduced. CHECK_MEM_ERROR(cm, cpi->coeff_buffer_base, aom_malloc(sizeof(*cpi->coeff_buffer_base) * size)); #endif } void av1_free_txb_buf(AV1_COMP *cpi) { #if 0 int i; for (i = 0; i < MAX_MB_PLANE; ++i) { aom_free(cpi->tcoeff_buf[i]); } #else aom_free(cpi->coeff_buffer_base); #endif } void av1_set_coeff_buffer(const AV1_COMP *const cpi, MACROBLOCK *const x, int mi_row, int mi_col) { int stride = (cpi->common.mi_cols >> MAX_MIB_SIZE_LOG2) + 1; int offset = (mi_row >> MAX_MIB_SIZE_LOG2) * stride + (mi_col >> MAX_MIB_SIZE_LOG2); CB_COEFF_BUFFER *coeff_buf = &cpi->coeff_buffer_base[offset]; const int txb_offset = x->cb_offset / (TX_SIZE_W_MIN * TX_SIZE_H_MIN); for (int plane = 0; plane < MAX_MB_PLANE; ++plane) { x->mbmi_ext->tcoeff[plane] = coeff_buf->tcoeff[plane] + x->cb_offset; x->mbmi_ext->eobs[plane] = coeff_buf->eobs[plane] + txb_offset; x->mbmi_ext->txb_skip_ctx[plane] = coeff_buf->txb_skip_ctx[plane] + txb_offset; x->mbmi_ext->dc_sign_ctx[plane] = coeff_buf->dc_sign_ctx[plane] + txb_offset; } } static void write_golomb(aom_writer *w, int level) { int x = level + 1; int i = x; int length = 0; while (i) { i >>= 1; ++length; } assert(length > 0); for (i = 0; i < length - 1; ++i) aom_write_bit(w, 0); for (i = length - 1; i >= 0; --i) aom_write_bit(w, (x >> i) & 0x01); } static INLINE void write_nz_map(aom_writer *w, const tran_low_t *tcoeff, uint16_t eob, int plane, const int16_t *scan, TX_SIZE tx_size, TX_TYPE tx_type, FRAME_CONTEXT *fc) { const PLANE_TYPE plane_type = get_plane_type(plane); const TX_SIZE txs_ctx = get_txsize_context(tx_size); const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2; const int height = tx_size_high[tx_size]; #if CONFIG_CTX1D const int width = tx_size_wide[tx_size]; const int eob_offset = width + height; const TX_CLASS tx_class = get_tx_class(tx_type); const int seg_eob = (tx_class == TX_CLASS_2D) ? tx_size_2d[tx_size] : eob_offset; #else const int seg_eob = tx_size_2d[tx_size]; #endif #if !LV_MAP_PROB aom_prob *nz_map = fc->nz_map[txs_ctx][plane_type]; aom_prob *eob_flag = fc->eob_flag[txs_ctx][plane_type]; #endif for (int c = 0; c < eob; ++c) { int coeff_ctx = get_nz_map_ctx(tcoeff, c, scan, bwl, height, tx_type); int eob_ctx = get_eob_ctx(tcoeff, scan[c], txs_ctx, tx_type); tran_low_t v = tcoeff[scan[c]]; int is_nz = (v != 0); if (c == seg_eob - 1) break; #if LV_MAP_PROB aom_write_bin(w, is_nz, fc->nz_map_cdf[txs_ctx][plane_type][coeff_ctx], 2); #else aom_write(w, is_nz, nz_map[coeff_ctx]); #endif if (is_nz) { #if LV_MAP_PROB aom_write_bin(w, c == (eob - 1), fc->eob_flag_cdf[txs_ctx][plane_type][eob_ctx], 2); #else aom_write(w, c == (eob - 1), eob_flag[eob_ctx]); #endif } } } #if CONFIG_CTX1D static INLINE void write_nz_map_vert(aom_writer *w, const tran_low_t *tcoeff, uint16_t eob, int plane, const int16_t *scan, const int16_t *iscan, TX_SIZE tx_size, TX_TYPE tx_type, FRAME_CONTEXT *fc) { (void)eob; const TX_SIZE txs_ctx = get_txsize_context(tx_size); const PLANE_TYPE plane_type = get_plane_type(plane); const TX_CLASS tx_class = get_tx_class(tx_type); const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2; const int width = tx_size_wide[tx_size]; const int height = tx_size_high[tx_size]; int16_t eob_ls[MAX_HVTX_SIZE]; get_eob_vert(eob_ls, tcoeff, width, height); #if !LV_MAP_PROB aom_prob *nz_map = fc->nz_map[txs_ctx][plane_type]; #endif for (int c = 0; c < width; ++c) { int16_t veob = eob_ls[c]; assert(veob <= height); int el_ctx = get_empty_line_ctx(c, eob_ls); #if LV_MAP_PROB aom_write_bin(w, veob == 0, fc->empty_line_cdf[txs_ctx][plane_type][tx_class][el_ctx], 2); #else aom_write(w, veob == 0, fc->empty_line[txs_ctx][plane_type][tx_class][el_ctx]); #endif if (veob) { for (int r = 0; r < veob; ++r) { if (r + 1 != height) { int coeff_idx = r * width + c; int scan_idx = iscan[coeff_idx]; int is_nz = tcoeff[coeff_idx] != 0; int coeff_ctx = get_nz_map_ctx(tcoeff, scan_idx, scan, bwl, height, tx_type); #if LV_MAP_PROB aom_write_bin(w, is_nz, fc->nz_map_cdf[txs_ctx][plane_type][coeff_ctx], 2); #else aom_write(w, is_nz, nz_map[coeff_ctx]); #endif if (is_nz) { int eob_ctx = get_hv_eob_ctx(c, r, eob_ls); #if LV_MAP_PROB aom_write_bin( w, r == veob - 1, fc->hv_eob_cdf[txs_ctx][plane_type][tx_class][eob_ctx], 2); #else aom_write(w, r == veob - 1, fc->hv_eob[txs_ctx][plane_type][tx_class][eob_ctx]); #endif } } } } } } static INLINE void write_nz_map_horiz(aom_writer *w, const tran_low_t *tcoeff, uint16_t eob, int plane, const int16_t *scan, const int16_t *iscan, TX_SIZE tx_size, TX_TYPE tx_type, FRAME_CONTEXT *fc) { (void)scan; (void)eob; const TX_SIZE txs_ctx = get_txsize_context(tx_size); const PLANE_TYPE plane_type = get_plane_type(plane); const TX_CLASS tx_class = get_tx_class(tx_type); const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2; const int width = tx_size_wide[tx_size]; const int height = tx_size_high[tx_size]; int16_t eob_ls[MAX_HVTX_SIZE]; get_eob_horiz(eob_ls, tcoeff, width, height); #if !LV_MAP_PROB aom_prob *nz_map = fc->nz_map[txs_ctx][plane_type]; #endif for (int r = 0; r < height; ++r) { int16_t heob = eob_ls[r]; int el_ctx = get_empty_line_ctx(r, eob_ls); #if LV_MAP_PROB aom_write_bin(w, heob == 0, fc->empty_line_cdf[txs_ctx][plane_type][tx_class][el_ctx], 2); #else aom_write(w, heob == 0, fc->empty_line[txs_ctx][plane_type][tx_class][el_ctx]); #endif if (heob) { for (int c = 0; c < heob; ++c) { if (c + 1 != width) { int coeff_idx = r * width + c; int scan_idx = iscan[coeff_idx]; int is_nz = tcoeff[coeff_idx] != 0; int coeff_ctx = get_nz_map_ctx(tcoeff, scan_idx, scan, bwl, height, tx_type); #if LV_MAP_PROB aom_write_bin(w, is_nz, fc->nz_map_cdf[txs_ctx][plane_type][coeff_ctx], 2); #else aom_write(w, is_nz, nz_map[coeff_ctx]); #endif if (is_nz) { int eob_ctx = get_hv_eob_ctx(r, c, eob_ls); #if LV_MAP_PROB aom_write_bin( w, c == heob - 1, fc->hv_eob_cdf[txs_ctx][plane_type][tx_class][eob_ctx], 2); #else aom_write(w, c == heob - 1, fc->hv_eob[txs_ctx][plane_type][tx_class][eob_ctx]); #endif } } } } } } #endif void av1_write_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd, aom_writer *w, int blk_row, int blk_col, int block, int plane, TX_SIZE tx_size, const tran_low_t *tcoeff, uint16_t eob, TXB_CTX *txb_ctx) { MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi; const PLANE_TYPE plane_type = get_plane_type(plane); const TX_SIZE txs_ctx = get_txsize_context(tx_size); const TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, tx_size); const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi); const int16_t *scan = scan_order->scan; int c; const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2; const int height = tx_size_high[tx_size]; uint16_t update_eob = 0; FRAME_CONTEXT *ec_ctx = xd->tile_ctx; (void)blk_row; (void)blk_col; #if LV_MAP_PROB aom_write_bin(w, eob == 0, ec_ctx->txb_skip_cdf[txs_ctx][txb_ctx->txb_skip_ctx], 2); #else aom_write(w, eob == 0, ec_ctx->txb_skip[txs_ctx][txb_ctx->txb_skip_ctx]); #endif if (eob == 0) return; #if CONFIG_TXK_SEL av1_write_tx_type(cm, xd, blk_row, blk_col, block, plane, get_min_tx_size(tx_size), w); #endif #if CONFIG_CTX1D TX_CLASS tx_class = get_tx_class(tx_type); if (tx_class == TX_CLASS_2D) { write_nz_map(w, tcoeff, eob, plane, scan, tx_size, tx_type, ec_ctx); } else { const int width = tx_size_wide[tx_size]; const int eob_offset = width + height; const int eob_mode = eob > eob_offset; #if LV_MAP_PROB aom_write_bin(w, eob_mode, ec_ctx->eob_mode_cdf[txs_ctx][plane_type][tx_class], 2); #else aom_write(w, eob_mode, ec_ctx->eob_mode[txs_ctx][plane_type][tx_class]); #endif if (eob_mode == 0) { write_nz_map(w, tcoeff, eob, plane, scan, tx_size, tx_type, ec_ctx); } else { const int16_t *iscan = scan_order->iscan; assert(tx_class == TX_CLASS_VERT || tx_class == TX_CLASS_HORIZ); if (tx_class == TX_CLASS_VERT) write_nz_map_vert(w, tcoeff, eob, plane, scan, iscan, tx_size, tx_type, ec_ctx); else write_nz_map_horiz(w, tcoeff, eob, plane, scan, iscan, tx_size, tx_type, ec_ctx); } } #else write_nz_map(w, tcoeff, eob, plane, scan, tx_size, tx_type, ec_ctx); #endif // CONFIG_CTX1D int i; for (i = 0; i < NUM_BASE_LEVELS; ++i) { #if !LV_MAP_PROB aom_prob *coeff_base = ec_ctx->coeff_base[txs_ctx][plane_type][i]; #endif update_eob = 0; for (c = eob - 1; c >= 0; --c) { tran_low_t v = tcoeff[scan[c]]; tran_low_t level = abs(v); int sign = (v < 0) ? 1 : 0; int ctx; if (level <= i) continue; ctx = get_base_ctx(tcoeff, scan[c], bwl, height, i + 1); if (level == i + 1) { #if LV_MAP_PROB aom_write_bin(w, 1, ec_ctx->coeff_base_cdf[txs_ctx][plane_type][i][ctx], 2); #else aom_write(w, 1, coeff_base[ctx]); #endif if (c == 0) { #if LV_MAP_PROB aom_write_bin(w, sign, ec_ctx->dc_sign_cdf[plane_type][txb_ctx->dc_sign_ctx], 2); #else aom_write(w, sign, ec_ctx->dc_sign[plane_type][txb_ctx->dc_sign_ctx]); #endif } else { aom_write_bit(w, sign); } continue; } #if LV_MAP_PROB aom_write_bin(w, 0, ec_ctx->coeff_base_cdf[txs_ctx][plane_type][i][ctx], 2); #else aom_write(w, 0, coeff_base[ctx]); #endif update_eob = AOMMAX(update_eob, c); } } for (c = update_eob; c >= 0; --c) { tran_low_t v = tcoeff[scan[c]]; tran_low_t level = abs(v); int sign = (v < 0) ? 1 : 0; int idx; int ctx; if (level <= NUM_BASE_LEVELS) continue; if (c == 0) { #if LV_MAP_PROB aom_write_bin(w, sign, ec_ctx->dc_sign_cdf[plane_type][txb_ctx->dc_sign_ctx], 2); #else aom_write(w, sign, ec_ctx->dc_sign[plane_type][txb_ctx->dc_sign_ctx]); #endif } else { aom_write_bit(w, sign); } // level is above 1. ctx = get_br_ctx(tcoeff, scan[c], bwl, height); #if BR_NODE int base_range = level - 1 - NUM_BASE_LEVELS; int br_set_idx = 0; int br_base = 0; int br_offset = 0; if (base_range >= COEFF_BASE_RANGE) br_set_idx = BASE_RANGE_SETS; else br_set_idx = coeff_to_br_index[base_range]; for (idx = 0; idx < BASE_RANGE_SETS; ++idx) { aom_write_bin(w, idx == br_set_idx, ec_ctx->coeff_br_cdf[txs_ctx][plane_type][idx][ctx], 2); if (idx == br_set_idx) { br_base = br_index_to_coeff[br_set_idx]; br_offset = base_range - br_base; int extra_bits = (1 << br_extra_bits[idx]) - 1; for (int tok = 0; tok < extra_bits; ++tok) { if (tok == br_offset) { aom_write_bin(w, 1, ec_ctx->coeff_lps_cdf[txs_ctx][plane_type][ctx], 2); break; } aom_write_bin(w, 0, ec_ctx->coeff_lps_cdf[txs_ctx][plane_type][ctx], 2); } // aom_write_literal(w, br_offset, br_extra_bits[idx]); break; } } if (br_set_idx < BASE_RANGE_SETS) continue; #else // BR_NODE for (idx = 0; idx < COEFF_BASE_RANGE; ++idx) { if (level == (idx + 1 + NUM_BASE_LEVELS)) { #if LV_MAP_PROB aom_write_bin(w, 1, ec_ctx->coeff_lps_cdf[txs_ctx][plane_type][ctx], 2); #else aom_write(w, 1, ec_ctx->coeff_lps[txs_ctx][plane_type][ctx]); #endif break; } #if LV_MAP_PROB aom_write_bin(w, 0, ec_ctx->coeff_lps_cdf[txs_ctx][plane_type][ctx], 2); #else aom_write(w, 0, ec_ctx->coeff_lps[txs_ctx][plane_type][ctx]); #endif } if (idx < COEFF_BASE_RANGE) continue; #endif // BR_NODE // use 0-th order Golomb code to handle the residual level. write_golomb(w, level - COEFF_BASE_RANGE - 1 - NUM_BASE_LEVELS); } } void av1_write_coeffs_mb(const AV1_COMMON *const cm, MACROBLOCK *x, aom_writer *w, int plane) { MACROBLOCKD *xd = &x->e_mbd; MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi; BLOCK_SIZE bsize = mbmi->sb_type; struct macroblockd_plane *pd = &xd->plane[plane]; #if CONFIG_CHROMA_SUB8X8 const BLOCK_SIZE plane_bsize = AOMMAX(BLOCK_4X4, get_plane_block_size(bsize, pd)); #elif CONFIG_CB4X4 const BLOCK_SIZE plane_bsize = get_plane_block_size(bsize, pd); #else const BLOCK_SIZE plane_bsize = get_plane_block_size(AOMMAX(bsize, BLOCK_8X8), pd); #endif const int max_blocks_wide = max_block_wide(xd, plane_bsize, plane); const int max_blocks_high = max_block_high(xd, plane_bsize, plane); const TX_SIZE tx_size = av1_get_tx_size(plane, xd); const int bkw = tx_size_wide_unit[tx_size]; const int bkh = tx_size_high_unit[tx_size]; const int step = tx_size_wide_unit[tx_size] * tx_size_high_unit[tx_size]; int row, col; int block = 0; for (row = 0; row < max_blocks_high; row += bkh) { for (col = 0; col < max_blocks_wide; col += bkw) { tran_low_t *tcoeff = BLOCK_OFFSET(x->mbmi_ext->tcoeff[plane], block); uint16_t eob = x->mbmi_ext->eobs[plane][block]; TXB_CTX txb_ctx = { x->mbmi_ext->txb_skip_ctx[plane][block], x->mbmi_ext->dc_sign_ctx[plane][block] }; av1_write_coeffs_txb(cm, xd, w, row, col, block, plane, tx_size, tcoeff, eob, &txb_ctx); block += step; } } } static INLINE void get_base_ctx_set(const tran_low_t *tcoeffs, int c, // raster order const int bwl, const int height, int ctx_set[NUM_BASE_LEVELS]) { const int row = c >> bwl; const int col = c - (row << bwl); const int stride = 1 << bwl; int mag[NUM_BASE_LEVELS] = { 0 }; int idx; tran_low_t abs_coeff; int i; for (idx = 0; idx < BASE_CONTEXT_POSITION_NUM; ++idx) { int ref_row = row + base_ref_offset[idx][0]; int ref_col = col + base_ref_offset[idx][1]; int pos = (ref_row << bwl) + ref_col; if (ref_row < 0 || ref_col < 0 || ref_row >= height || ref_col >= stride) continue; abs_coeff = abs(tcoeffs[pos]); for (i = 0; i < NUM_BASE_LEVELS; ++i) { ctx_set[i] += abs_coeff > i; if (base_ref_offset[idx][0] >= 0 && base_ref_offset[idx][1] >= 0) mag[i] |= abs_coeff > (i + 1); } } for (i = 0; i < NUM_BASE_LEVELS; ++i) { ctx_set[i] = get_base_ctx_from_count_mag(row, col, ctx_set[i], mag[i]); } return; } static INLINE int get_br_cost(tran_low_t abs_qc, int ctx, const int *coeff_lps) { const tran_low_t min_level = 1 + NUM_BASE_LEVELS; const tran_low_t max_level = 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE; (void)ctx; if (abs_qc >= min_level) { #if BR_NODE if (abs_qc >= max_level) return coeff_lps[COEFF_BASE_RANGE]; // COEFF_BASE_RANGE * cost0; else return coeff_lps[(abs_qc - min_level)]; // * cost0 + cost1; #else const int cost0 = coeff_lps[0]; const int cost1 = coeff_lps[1]; if (abs_qc >= max_level) return COEFF_BASE_RANGE * cost0; else return (abs_qc - min_level) * cost0 + cost1; #endif } else { return 0; } } static INLINE int get_base_cost(tran_low_t abs_qc, int ctx, const int coeff_base[2], int base_idx) { const int level = base_idx + 1; (void)ctx; if (abs_qc < level) return 0; else return coeff_base[abs_qc == level]; } int get_nz_eob_map_cost(const LV_MAP_COEFF_COST *coeff_costs, const tran_low_t *qcoeff, uint16_t eob, int plane, const int16_t *scan, TX_SIZE tx_size, TX_TYPE tx_type) { (void)plane; TX_SIZE txs_ctx = get_txsize_context(tx_size); const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2; const int height = tx_size_high[tx_size]; #if CONFIG_CTX1D const TX_CLASS tx_class = get_tx_class(tx_type); const int width = tx_size_wide[tx_size]; const int eob_offset = width + height; const int seg_eob = (tx_class == TX_CLASS_2D) ? tx_size_2d[tx_size] : eob_offset; #else const int seg_eob = tx_size_2d[tx_size]; #endif int cost = 0; for (int c = 0; c < eob; ++c) { tran_low_t v = qcoeff[scan[c]]; int is_nz = (v != 0); if (c + 1 != seg_eob) { int coeff_ctx = get_nz_map_ctx(qcoeff, c, scan, bwl, height, tx_type); cost += coeff_costs->nz_map_cost[coeff_ctx][is_nz]; if (is_nz) { int eob_ctx = get_eob_ctx(qcoeff, scan[c], txs_ctx, tx_type); cost += coeff_costs->eob_cost[eob_ctx][c == (eob - 1)]; } } } return cost; } #if CONFIG_CTX1D static INLINE int get_nz_eob_map_cost_vert(const LV_MAP_COEFF_COST *coeff_costs, const tran_low_t *qcoeff, uint16_t eob, int plane, const int16_t *scan, const int16_t *iscan, TX_SIZE tx_size, TX_TYPE tx_type) { (void)tx_size; (void)scan; (void)eob; (void)plane; const TX_CLASS tx_class = get_tx_class(tx_type); const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2; const int width = tx_size_wide[tx_size]; const int height = tx_size_high[tx_size]; int16_t eob_ls[MAX_HVTX_SIZE]; get_eob_vert(eob_ls, qcoeff, width, height); int cost = 0; for (int c = 0; c < width; ++c) { int16_t veob = eob_ls[c]; assert(veob <= height); int el_ctx = get_empty_line_ctx(c, eob_ls); cost += coeff_costs->empty_line_cost[tx_class][el_ctx][veob == 0]; if (veob) { for (int r = 0; r < veob; ++r) { if (r + 1 != height) { int coeff_idx = r * width + c; int scan_idx = iscan[coeff_idx]; int is_nz = qcoeff[coeff_idx] != 0; int coeff_ctx = get_nz_map_ctx(qcoeff, scan_idx, scan, bwl, height, tx_type); cost += coeff_costs->nz_map_cost[coeff_ctx][is_nz]; if (is_nz) { int eob_ctx = get_hv_eob_ctx(c, r, eob_ls); cost += coeff_costs->hv_eob_cost[tx_class][eob_ctx][r == veob - 1]; } } } } } return cost; } static INLINE int get_nz_eob_map_cost_horiz( const LV_MAP_COEFF_COST *coeff_costs, const tran_low_t *qcoeff, uint16_t eob, int plane, const int16_t *scan, const int16_t *iscan, TX_SIZE tx_size, TX_TYPE tx_type) { (void)tx_size; (void)scan; (void)eob; (void)plane; const TX_CLASS tx_class = get_tx_class(tx_type); const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2; const int width = tx_size_wide[tx_size]; const int height = tx_size_high[tx_size]; int16_t eob_ls[MAX_HVTX_SIZE]; get_eob_horiz(eob_ls, qcoeff, width, height); int cost = 0; for (int r = 0; r < height; ++r) { int16_t heob = eob_ls[r]; assert(heob <= width); int el_ctx = get_empty_line_ctx(r, eob_ls); cost += coeff_costs->empty_line_cost[tx_class][el_ctx][heob == 0]; if (heob) { for (int c = 0; c < heob; ++c) { if (c + 1 != width) { int coeff_idx = r * width + c; int scan_idx = iscan[coeff_idx]; int is_nz = qcoeff[coeff_idx] != 0; int coeff_ctx = get_nz_map_ctx(qcoeff, scan_idx, scan, bwl, height, tx_type); cost += coeff_costs->nz_map_cost[coeff_ctx][is_nz]; if (is_nz) { int eob_ctx = get_hv_eob_ctx(r, c, eob_ls); cost += coeff_costs->hv_eob_cost[tx_class][eob_ctx][c == heob - 1]; } } } } } return cost; } #endif int av1_cost_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCK *x, int plane, int blk_row, int blk_col, int block, TX_SIZE tx_size, TXB_CTX *txb_ctx) { MACROBLOCKD *const xd = &x->e_mbd; TX_SIZE txs_ctx = get_txsize_context(tx_size); const PLANE_TYPE plane_type = get_plane_type(plane); const TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, tx_size); MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi; const struct macroblock_plane *p = &x->plane[plane]; const int eob = p->eobs[block]; const tran_low_t *const qcoeff = BLOCK_OFFSET(p->qcoeff, block); int c, cost; int txb_skip_ctx = txb_ctx->txb_skip_ctx; const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2; const int height = tx_size_high[tx_size]; const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi); const int16_t *scan = scan_order->scan; LV_MAP_COEFF_COST *coeff_costs = &x->coeff_costs[txs_ctx][plane_type]; cost = 0; if (eob == 0) { cost = coeff_costs->txb_skip_cost[txb_skip_ctx][1]; return cost; } cost = coeff_costs->txb_skip_cost[txb_skip_ctx][0]; #if CONFIG_TXK_SEL cost += av1_tx_type_cost(cm, x, xd, mbmi->sb_type, plane, tx_size, tx_type); #endif #if CONFIG_CTX1D TX_CLASS tx_class = get_tx_class(tx_type); if (tx_class == TX_CLASS_2D) { cost += get_nz_eob_map_cost(coeff_costs, qcoeff, eob, plane, scan, tx_size, tx_type); } else { const int width = tx_size_wide[tx_size]; const int eob_offset = width + height; const int eob_mode = eob > eob_offset; cost += coeff_costs->eob_mode_cost[tx_class][eob_mode]; if (eob_mode == 0) { cost += get_nz_eob_map_cost(coeff_costs, qcoeff, eob, plane, scan, tx_size, tx_type); } else { const int16_t *iscan = scan_order->iscan; assert(tx_class == TX_CLASS_VERT || tx_class == TX_CLASS_HORIZ); if (tx_class == TX_CLASS_VERT) cost += get_nz_eob_map_cost_vert(coeff_costs, qcoeff, eob, plane, scan, iscan, tx_size, tx_type); else cost += get_nz_eob_map_cost_horiz(coeff_costs, qcoeff, eob, plane, scan, iscan, tx_size, tx_type); } } #else // CONFIG_CTX1D cost += get_nz_eob_map_cost(coeff_costs, qcoeff, eob, plane, scan, tx_size, tx_type); #endif // CONFIG_CTX1D for (c = 0; c < eob; ++c) { tran_low_t v = qcoeff[scan[c]]; int is_nz = (v != 0); int level = abs(v); if (is_nz) { int ctx_ls[NUM_BASE_LEVELS] = { 0 }; int sign = (v < 0) ? 1 : 0; // sign bit cost if (c == 0) { int dc_sign_ctx = txb_ctx->dc_sign_ctx; cost += coeff_costs->dc_sign_cost[dc_sign_ctx][sign]; } else { cost += av1_cost_bit(128, sign); } get_base_ctx_set(qcoeff, scan[c], bwl, height, ctx_ls); int i; for (i = 0; i < NUM_BASE_LEVELS; ++i) { if (level <= i) continue; if (level == i + 1) { cost += coeff_costs->base_cost[i][ctx_ls[i]][1]; continue; } cost += coeff_costs->base_cost[i][ctx_ls[i]][0]; } if (level > NUM_BASE_LEVELS) { int ctx; ctx = get_br_ctx(qcoeff, scan[c], bwl, height); #if BR_NODE int base_range = level - 1 - NUM_BASE_LEVELS; if (base_range < COEFF_BASE_RANGE) { cost += coeff_costs->lps_cost[ctx][base_range]; } else { cost += coeff_costs->lps_cost[ctx][COEFF_BASE_RANGE]; } #else for (int idx = 0; idx < COEFF_BASE_RANGE; ++idx) { if (level == (idx + 1 + NUM_BASE_LEVELS)) { cost += coeff_costs->lps_cost[ctx][1]; break; } cost += coeff_costs->lps_cost[ctx][0]; } #endif if (level >= 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE) { // residual cost int r = level - COEFF_BASE_RANGE - NUM_BASE_LEVELS; int ri = r; int length = 0; while (ri) { ri >>= 1; ++length; } for (ri = 0; ri < length - 1; ++ri) cost += av1_cost_bit(128, 0); for (ri = length - 1; ri >= 0; --ri) cost += av1_cost_bit(128, (r >> ri) & 0x01); } } } } return cost; } static INLINE int has_base(tran_low_t qc, int base_idx) { const int level = base_idx + 1; return abs(qc) >= level; } static INLINE int has_br(tran_low_t qc) { return abs(qc) >= 1 + NUM_BASE_LEVELS; } static INLINE int get_sign_bit_cost(tran_low_t qc, int coeff_idx, const int (*dc_sign_cost)[2], int dc_sign_ctx) { const int sign = (qc < 0) ? 1 : 0; // sign bit cost if (coeff_idx == 0) { return dc_sign_cost[dc_sign_ctx][sign]; } else { return av1_cost_bit(128, sign); } } static INLINE int get_golomb_cost(int abs_qc) { if (abs_qc >= 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE) { // residual cost int r = abs_qc - COEFF_BASE_RANGE - NUM_BASE_LEVELS; int ri = r; int length = 0; while (ri) { ri >>= 1; ++length; } return av1_cost_literal(2 * length - 1); } else { return 0; } } void gen_txb_cache(TxbCache *txb_cache, TxbInfo *txb_info) { // gen_nz_count_arr const int16_t *scan = txb_info->scan_order->scan; const int bwl = txb_info->bwl; const int height = txb_info->height; tran_low_t *qcoeff = txb_info->qcoeff; const BASE_CTX_TABLE *base_ctx_table = txb_info->coeff_ctx_table->base_ctx_table; for (int c = 0; c < txb_info->eob; ++c) { const int coeff_idx = scan[c]; // raster order const int row = coeff_idx >> bwl; const int col = coeff_idx - (row << bwl); #if REDUCE_CONTEXT_DEPENDENCY int prev_coeff_idx; int prev_row; int prev_col; if (c > MIN_SCAN_IDX_REDUCE_CONTEXT_DEPENDENCY) { prev_coeff_idx = scan[c - 1]; // raster order prev_row = prev_coeff_idx >> bwl; prev_col = prev_coeff_idx - (prev_row << bwl); } else { prev_coeff_idx = -1; prev_row = -1; prev_col = -1; } txb_cache->nz_count_arr[coeff_idx] = get_nz_count(qcoeff, bwl, height, row, col, prev_row, prev_col); #else txb_cache->nz_count_arr[coeff_idx] = get_nz_count(qcoeff, bwl, height, row, col); #endif const int nz_count = txb_cache->nz_count_arr[coeff_idx]; txb_cache->nz_ctx_arr[coeff_idx] = get_nz_map_ctx_from_count(nz_count, coeff_idx, bwl, txb_info->tx_type); // gen_base_count_mag_arr if (!has_base(qcoeff[coeff_idx], 0)) continue; int *base_mag = txb_cache->base_mag_arr[coeff_idx]; int count[NUM_BASE_LEVELS]; get_base_count_mag(base_mag, count, qcoeff, bwl, height, row, col); for (int i = 0; i < NUM_BASE_LEVELS; ++i) { if (!has_base(qcoeff[coeff_idx], i)) break; txb_cache->base_count_arr[i][coeff_idx] = count[i]; const int level = i + 1; txb_cache->base_ctx_arr[i][coeff_idx] = base_ctx_table[row != 0][col != 0][base_mag[0] > level][count[i]]; } // gen_br_count_mag_arr if (!has_br(qcoeff[coeff_idx])) continue; int *br_count = txb_cache->br_count_arr + coeff_idx; int *br_mag = txb_cache->br_mag_arr[coeff_idx]; *br_count = get_br_count_mag(br_mag, qcoeff, bwl, height, row, col, NUM_BASE_LEVELS); txb_cache->br_ctx_arr[coeff_idx] = get_br_ctx_from_count_mag(row, col, *br_count, br_mag[0]); } } static INLINE const int *get_level_prob(int level, int coeff_idx, const TxbCache *txb_cache, const LV_MAP_COEFF_COST *txb_costs) { if (level == 0) { const int ctx = txb_cache->nz_ctx_arr[coeff_idx]; return txb_costs->nz_map_cost[ctx]; } else if (level >= 1 && level < 1 + NUM_BASE_LEVELS) { const int idx = level - 1; const int ctx = txb_cache->base_ctx_arr[idx][coeff_idx]; return txb_costs->base_cost[idx][ctx]; } else if (level >= 1 + NUM_BASE_LEVELS && level < 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE) { const int ctx = txb_cache->br_ctx_arr[coeff_idx]; return txb_costs->lps_cost[ctx]; } else if (level >= 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE) { printf("get_level_prob does not support golomb\n"); assert(0); return 0; } else { assert(0); return 0; } } static INLINE tran_low_t get_lower_coeff(tran_low_t qc) { if (qc == 0) { return 0; } return qc > 0 ? qc - 1 : qc + 1; } static INLINE void update_mag_arr(int *mag_arr, int abs_qc) { if (mag_arr[0] == abs_qc) { mag_arr[1] -= 1; assert(mag_arr[1] >= 0); } } static INLINE int get_mag_from_mag_arr(const int *mag_arr) { int mag; if (mag_arr[1] > 0) { mag = mag_arr[0]; } else if (mag_arr[0] > 0) { mag = mag_arr[0] - 1; } else { // no neighbor assert(mag_arr[0] == 0 && mag_arr[1] == 0); mag = 0; } return mag; } static int neighbor_level_down_update(int *new_count, int *new_mag, int count, const int *mag, int coeff_idx, tran_low_t abs_nb_coeff, int nb_coeff_idx, int level, const TxbInfo *txb_info) { *new_count = count; *new_mag = get_mag_from_mag_arr(mag); int update = 0; // check if br_count changes if (abs_nb_coeff == level) { update = 1; *new_count -= 1; assert(*new_count >= 0); } const int row = coeff_idx >> txb_info->bwl; const int col = coeff_idx - (row << txb_info->bwl); const int nb_row = nb_coeff_idx >> txb_info->bwl; const int nb_col = nb_coeff_idx - (nb_row << txb_info->bwl); // check if mag changes if (nb_row >= row && nb_col >= col) { if (abs_nb_coeff == mag[0]) { assert(mag[1] > 0); if (mag[1] == 1) { // the nb is the only qc with max mag *new_mag -= 1; assert(*new_mag >= 0); update = 1; } } } return update; } static int try_neighbor_level_down_br(int coeff_idx, int nb_coeff_idx, const TxbCache *txb_cache, const LV_MAP_COEFF_COST *txb_costs, const TxbInfo *txb_info) { const tran_low_t qc = txb_info->qcoeff[coeff_idx]; const tran_low_t abs_qc = abs(qc); const int level = NUM_BASE_LEVELS + 1; if (abs_qc < level) return 0; const tran_low_t nb_coeff = txb_info->qcoeff[nb_coeff_idx]; const tran_low_t abs_nb_coeff = abs(nb_coeff); const int count = txb_cache->br_count_arr[coeff_idx]; const int *mag = txb_cache->br_mag_arr[coeff_idx]; int new_count; int new_mag; const int update = neighbor_level_down_update(&new_count, &new_mag, count, mag, coeff_idx, abs_nb_coeff, nb_coeff_idx, level, txb_info); if (update) { const int row = coeff_idx >> txb_info->bwl; const int col = coeff_idx - (row << txb_info->bwl); const int ctx = txb_cache->br_ctx_arr[coeff_idx]; const int org_cost = get_br_cost(abs_qc, ctx, txb_costs->lps_cost[ctx]); const int new_ctx = get_br_ctx_from_count_mag(row, col, new_count, new_mag); const int new_cost = get_br_cost(abs_qc, new_ctx, txb_costs->lps_cost[new_ctx]); const int cost_diff = -org_cost + new_cost; return cost_diff; } else { return 0; } } static int try_neighbor_level_down_base(int coeff_idx, int nb_coeff_idx, const TxbCache *txb_cache, const LV_MAP_COEFF_COST *txb_costs, const TxbInfo *txb_info) { const tran_low_t qc = txb_info->qcoeff[coeff_idx]; const tran_low_t abs_qc = abs(qc); const BASE_CTX_TABLE *base_ctx_table = txb_info->coeff_ctx_table->base_ctx_table; int cost_diff = 0; for (int base_idx = 0; base_idx < NUM_BASE_LEVELS; ++base_idx) { const int level = base_idx + 1; if (abs_qc < level) continue; const tran_low_t nb_coeff = txb_info->qcoeff[nb_coeff_idx]; const tran_low_t abs_nb_coeff = abs(nb_coeff); const int count = txb_cache->base_count_arr[base_idx][coeff_idx]; const int *mag = txb_cache->base_mag_arr[coeff_idx]; int new_count; int new_mag; const int update = neighbor_level_down_update(&new_count, &new_mag, count, mag, coeff_idx, abs_nb_coeff, nb_coeff_idx, level, txb_info); if (update) { const int row = coeff_idx >> txb_info->bwl; const int col = coeff_idx - (row << txb_info->bwl); const int ctx = txb_cache->base_ctx_arr[base_idx][coeff_idx]; const int org_cost = get_base_cost( abs_qc, ctx, txb_costs->base_cost[base_idx][ctx], base_idx); const int new_ctx = base_ctx_table[row != 0][col != 0][new_mag > level][new_count]; const int new_cost = get_base_cost( abs_qc, new_ctx, txb_costs->base_cost[base_idx][new_ctx], base_idx); cost_diff += -org_cost + new_cost; } } return cost_diff; } static int try_neighbor_level_down_nz(int coeff_idx, int nb_coeff_idx, const TxbCache *txb_cache, const LV_MAP_COEFF_COST *txb_costs, TxbInfo *txb_info) { // assume eob doesn't change const tran_low_t qc = txb_info->qcoeff[coeff_idx]; const tran_low_t abs_qc = abs(qc); const tran_low_t nb_coeff = txb_info->qcoeff[nb_coeff_idx]; const tran_low_t abs_nb_coeff = abs(nb_coeff); if (abs_nb_coeff != 1) return 0; const int16_t *iscan = txb_info->scan_order->iscan; const int scan_idx = iscan[coeff_idx]; if (scan_idx == txb_info->seg_eob) return 0; const int nb_scan_idx = iscan[nb_coeff_idx]; if (nb_scan_idx < scan_idx) { const int count = txb_cache->nz_count_arr[coeff_idx]; assert(count > 0); txb_info->qcoeff[nb_coeff_idx] = get_lower_coeff(nb_coeff); const int new_ctx = get_nz_map_ctx_from_count( count - 1, coeff_idx, txb_info->bwl, txb_info->tx_type); txb_info->qcoeff[nb_coeff_idx] = nb_coeff; const int ctx = txb_cache->nz_ctx_arr[coeff_idx]; const int is_nz = abs_qc > 0; const int org_cost = txb_costs->nz_map_cost[ctx][is_nz]; const int new_cost = txb_costs->nz_map_cost[new_ctx][is_nz]; const int cost_diff = new_cost - org_cost; return cost_diff; } else { return 0; } } static int try_self_level_down(tran_low_t *low_coeff, int coeff_idx, const TxbCache *txb_cache, const LV_MAP_COEFF_COST *txb_costs, TxbInfo *txb_info) { const tran_low_t qc = txb_info->qcoeff[coeff_idx]; if (qc == 0) { *low_coeff = 0; return 0; } const tran_low_t abs_qc = abs(qc); *low_coeff = get_lower_coeff(qc); int cost_diff; if (*low_coeff == 0) { const int scan_idx = txb_info->scan_order->iscan[coeff_idx]; const int *level_cost = get_level_prob(abs_qc, coeff_idx, txb_cache, txb_costs); const int *low_level_cost = get_level_prob(abs(*low_coeff), coeff_idx, txb_cache, txb_costs); if (scan_idx < txb_info->seg_eob) { // When level-0, we code the binary of abs_qc > level // but when level-k k > 0 we code the binary of abs_qc == level // That's why wee need this special treatment for level-0 map // TODO(angiebird): make leve-0 consistent to other levels cost_diff = -level_cost[1] + low_level_cost[0] - low_level_cost[1]; } else { cost_diff = -level_cost[1]; } if (scan_idx < txb_info->seg_eob) { const int eob_ctx = get_eob_ctx(txb_info->qcoeff, coeff_idx, txb_info->txs_ctx, txb_info->tx_type); cost_diff -= txb_costs->eob_cost[eob_ctx][scan_idx == (txb_info->eob - 1)]; } const int sign_cost = get_sign_bit_cost( qc, coeff_idx, txb_costs->dc_sign_cost, txb_info->txb_ctx->dc_sign_ctx); cost_diff -= sign_cost; } else if (abs_qc <= NUM_BASE_LEVELS) { const int *level_cost = get_level_prob(abs_qc, coeff_idx, txb_cache, txb_costs); const int *low_level_cost = get_level_prob(abs(*low_coeff), coeff_idx, txb_cache, txb_costs); cost_diff = -level_cost[1] + low_level_cost[1] - low_level_cost[0]; } else if (abs_qc == NUM_BASE_LEVELS + 1) { const int *level_cost = get_level_prob(abs_qc, coeff_idx, txb_cache, txb_costs); const int *low_level_cost = get_level_prob(abs(*low_coeff), coeff_idx, txb_cache, txb_costs); #if BR_NODE cost_diff = -level_cost[0] + low_level_cost[1] - low_level_cost[0]; #else cost_diff = -level_cost[1] + low_level_cost[1] - low_level_cost[0]; #endif } else if (abs_qc < 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE) { const int *level_cost = get_level_prob(abs_qc, coeff_idx, txb_cache, txb_costs); const int *low_level_cost = get_level_prob(abs(*low_coeff), coeff_idx, txb_cache, txb_costs); #if BR_NODE cost_diff = -level_cost[abs_qc - 1 - NUM_BASE_LEVELS] + low_level_cost[abs(*low_coeff) - 1 - NUM_BASE_LEVELS]; #else cost_diff = -level_cost[1] + low_level_cost[1] - low_level_cost[0]; #endif } else if (abs_qc == 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE) { const int *low_level_cost = get_level_prob(abs(*low_coeff), coeff_idx, txb_cache, txb_costs); #if BR_NODE cost_diff = -get_golomb_cost(abs_qc) - low_level_cost[COEFF_BASE_RANGE] + low_level_cost[COEFF_BASE_RANGE - 1]; #else cost_diff = -get_golomb_cost(abs_qc) + low_level_cost[1] - low_level_cost[0]; #endif } else { assert(abs_qc > 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE); const tran_low_t abs_low_coeff = abs(*low_coeff); cost_diff = -get_golomb_cost(abs_qc) + get_golomb_cost(abs_low_coeff); } return cost_diff; } #define COST_MAP_SIZE 5 #define COST_MAP_OFFSET 2 static INLINE int check_nz_neighbor(tran_low_t qc) { return abs(qc) == 1; } static INLINE int check_base_neighbor(tran_low_t qc) { return abs(qc) <= 1 + NUM_BASE_LEVELS; } static INLINE int check_br_neighbor(tran_low_t qc) { return abs(qc) > BR_MAG_OFFSET; } #define FAST_OPTIMIZE_TXB 1 #if FAST_OPTIMIZE_TXB #define ALNB_REF_OFFSET_NUM 2 static int alnb_ref_offset[ALNB_REF_OFFSET_NUM][2] = { { -1, 0 }, { 0, -1 }, }; #define NB_REF_OFFSET_NUM 4 static int nb_ref_offset[NB_REF_OFFSET_NUM][2] = { { -1, 0 }, { 0, -1 }, { 1, 0 }, { 0, 1 }, }; #endif // FAST_OPTIMIZE_TXB // TODO(angiebird): add static to this function once it's called int try_level_down(int coeff_idx, const TxbCache *txb_cache, const LV_MAP_COEFF_COST *txb_costs, TxbInfo *txb_info, int (*cost_map)[COST_MAP_SIZE], int fast_mode) { #if !FAST_OPTIMIZE_TXB (void)fast_mode; #endif if (cost_map) { for (int i = 0; i < COST_MAP_SIZE; ++i) av1_zero(cost_map[i]); } tran_low_t qc = txb_info->qcoeff[coeff_idx]; tran_low_t low_coeff; if (qc == 0) return 0; int accu_cost_diff = 0; const int16_t *iscan = txb_info->scan_order->iscan; const int eob = txb_info->eob; const int scan_idx = iscan[coeff_idx]; if (scan_idx < eob) { const int cost_diff = try_self_level_down(&low_coeff, coeff_idx, txb_cache, txb_costs, txb_info); if (cost_map) cost_map[0 + COST_MAP_OFFSET][0 + COST_MAP_OFFSET] = cost_diff; accu_cost_diff += cost_diff; } const int row = coeff_idx >> txb_info->bwl; const int col = coeff_idx - (row << txb_info->bwl); if (check_nz_neighbor(qc)) { #if FAST_OPTIMIZE_TXB int(*ref_offset)[2]; int ref_num; if (fast_mode) { ref_offset = alnb_ref_offset; ref_num = ALNB_REF_OFFSET_NUM; } else { ref_offset = sig_ref_offset; ref_num = SIG_REF_OFFSET_NUM; } #else int(*ref_offset)[2] = sig_ref_offset; const int ref_num = SIG_REF_OFFSET_NUM; #endif for (int i = 0; i < ref_num; ++i) { const int nb_row = row - ref_offset[i][0]; const int nb_col = col - ref_offset[i][1]; const int nb_coeff_idx = nb_row * txb_info->stride + nb_col; if (nb_row < 0 || nb_col < 0 || nb_row >= txb_info->height || nb_col >= txb_info->stride) continue; const int nb_scan_idx = iscan[nb_coeff_idx]; if (nb_scan_idx < eob) { const int cost_diff = try_neighbor_level_down_nz( nb_coeff_idx, coeff_idx, txb_cache, txb_costs, txb_info); if (cost_map) cost_map[nb_row - row + COST_MAP_OFFSET] [nb_col - col + COST_MAP_OFFSET] += cost_diff; accu_cost_diff += cost_diff; } } } if (check_base_neighbor(qc)) { #if FAST_OPTIMIZE_TXB int(*ref_offset)[2]; int ref_num; if (fast_mode) { ref_offset = nb_ref_offset; ref_num = NB_REF_OFFSET_NUM; } else { ref_offset = base_ref_offset; ref_num = BASE_CONTEXT_POSITION_NUM; } #else int(*ref_offset)[2] = base_ref_offset; int ref_num = BASE_CONTEXT_POSITION_NUM; #endif for (int i = 0; i < ref_num; ++i) { const int nb_row = row - ref_offset[i][0]; const int nb_col = col - ref_offset[i][1]; const int nb_coeff_idx = nb_row * txb_info->stride + nb_col; if (nb_row < 0 || nb_col < 0 || nb_row >= txb_info->height || nb_col >= txb_info->stride) continue; const int nb_scan_idx = iscan[nb_coeff_idx]; if (nb_scan_idx < eob) { const int cost_diff = try_neighbor_level_down_base( nb_coeff_idx, coeff_idx, txb_cache, txb_costs, txb_info); if (cost_map) cost_map[nb_row - row + COST_MAP_OFFSET] [nb_col - col + COST_MAP_OFFSET] += cost_diff; accu_cost_diff += cost_diff; } } } if (check_br_neighbor(qc)) { #if FAST_OPTIMIZE_TXB int(*ref_offset)[2]; int ref_num; if (fast_mode) { ref_offset = nb_ref_offset; ref_num = NB_REF_OFFSET_NUM; } else { ref_offset = br_ref_offset; ref_num = BR_CONTEXT_POSITION_NUM; } #else int(*ref_offset)[2] = br_ref_offset; const int ref_num = BR_CONTEXT_POSITION_NUM; #endif for (int i = 0; i < ref_num; ++i) { const int nb_row = row - ref_offset[i][0]; const int nb_col = col - ref_offset[i][1]; const int nb_coeff_idx = nb_row * txb_info->stride + nb_col; if (nb_row < 0 || nb_col < 0 || nb_row >= txb_info->height || nb_col >= txb_info->stride) continue; const int nb_scan_idx = iscan[nb_coeff_idx]; if (nb_scan_idx < eob) { const int cost_diff = try_neighbor_level_down_br( nb_coeff_idx, coeff_idx, txb_cache, txb_costs, txb_info); if (cost_map) cost_map[nb_row - row + COST_MAP_OFFSET] [nb_col - col + COST_MAP_OFFSET] += cost_diff; accu_cost_diff += cost_diff; } } } return accu_cost_diff; } static int get_low_coeff_cost(int coeff_idx, const TxbCache *txb_cache, const LV_MAP_COEFF_COST *txb_costs, const TxbInfo *txb_info) { const tran_low_t qc = txb_info->qcoeff[coeff_idx]; const int abs_qc = abs(qc); assert(abs_qc <= 1); int cost = 0; const int scan_idx = txb_info->scan_order->iscan[coeff_idx]; if (scan_idx < txb_info->seg_eob) { const int *level_cost = get_level_prob(0, coeff_idx, txb_cache, txb_costs); cost += level_cost[qc != 0]; } if (qc != 0) { const int base_idx = 0; const int ctx = txb_cache->base_ctx_arr[base_idx][coeff_idx]; cost += get_base_cost(abs_qc, ctx, txb_costs->base_cost[base_idx][ctx], base_idx); if (scan_idx < txb_info->seg_eob) { const int eob_ctx = get_eob_ctx(txb_info->qcoeff, coeff_idx, txb_info->txs_ctx, txb_info->tx_type); cost += txb_costs->eob_cost[eob_ctx][scan_idx == (txb_info->eob - 1)]; } cost += get_sign_bit_cost(qc, coeff_idx, txb_costs->dc_sign_cost, txb_info->txb_ctx->dc_sign_ctx); } return cost; } static INLINE void set_eob(TxbInfo *txb_info, int eob) { txb_info->eob = eob; txb_info->seg_eob = AOMMIN(eob, tx_size_2d[txb_info->tx_size] - 1); } // TODO(angiebird): add static to this function once it's called int try_change_eob(int *new_eob, int coeff_idx, const TxbCache *txb_cache, const LV_MAP_COEFF_COST *txb_costs, TxbInfo *txb_info, int fast_mode) { assert(txb_info->eob > 0); const tran_low_t qc = txb_info->qcoeff[coeff_idx]; const int abs_qc = abs(qc); if (abs_qc != 1) { *new_eob = -1; return 0; } const int16_t *iscan = txb_info->scan_order->iscan; const int16_t *scan = txb_info->scan_order->scan; const int scan_idx = iscan[coeff_idx]; *new_eob = 0; int cost_diff = 0; cost_diff -= get_low_coeff_cost(coeff_idx, txb_cache, txb_costs, txb_info); // int coeff_cost = // get_coeff_cost(qc, scan_idx, txb_info, txb_probs); // if (-cost_diff != coeff_cost) { // printf("-cost_diff %d coeff_cost %d\n", -cost_diff, coeff_cost); // get_low_coeff_cost(coeff_idx, txb_cache, txb_probs, txb_info); // get_coeff_cost(qc, scan_idx, txb_info, txb_probs); // } for (int si = scan_idx - 1; si >= 0; --si) { const int ci = scan[si]; if (txb_info->qcoeff[ci] != 0) { *new_eob = si + 1; break; } else { cost_diff -= get_low_coeff_cost(ci, txb_cache, txb_costs, txb_info); } } const int org_eob = txb_info->eob; set_eob(txb_info, *new_eob); cost_diff += try_level_down(coeff_idx, txb_cache, txb_costs, txb_info, NULL, fast_mode); set_eob(txb_info, org_eob); if (*new_eob > 0) { // Note that get_eob_ctx does NOT actually account for qcoeff, so we don't // need to lower down the qcoeff here const int eob_ctx = get_eob_ctx(txb_info->qcoeff, scan[*new_eob - 1], txb_info->txs_ctx, txb_info->tx_type); cost_diff -= txb_costs->eob_cost[eob_ctx][0]; cost_diff += txb_costs->eob_cost[eob_ctx][1]; } else { const int txb_skip_ctx = txb_info->txb_ctx->txb_skip_ctx; cost_diff -= txb_costs->txb_skip_cost[txb_skip_ctx][0]; cost_diff += txb_costs->txb_skip_cost[txb_skip_ctx][1]; } return cost_diff; } static INLINE tran_low_t qcoeff_to_dqcoeff(tran_low_t qc, int dqv, int shift) { int sgn = qc < 0 ? -1 : 1; return sgn * ((abs(qc) * dqv) >> shift); } // TODO(angiebird): add static to this function it's called void update_level_down(int coeff_idx, TxbCache *txb_cache, TxbInfo *txb_info) { const tran_low_t qc = txb_info->qcoeff[coeff_idx]; const int abs_qc = abs(qc); if (qc == 0) return; const tran_low_t low_coeff = get_lower_coeff(qc); txb_info->qcoeff[coeff_idx] = low_coeff; const int dqv = txb_info->dequant[coeff_idx != 0]; txb_info->dqcoeff[coeff_idx] = qcoeff_to_dqcoeff(low_coeff, dqv, txb_info->shift); const int row = coeff_idx >> txb_info->bwl; const int col = coeff_idx - (row << txb_info->bwl); const int eob = txb_info->eob; const int16_t *iscan = txb_info->scan_order->iscan; for (int i = 0; i < SIG_REF_OFFSET_NUM; ++i) { const int nb_row = row - sig_ref_offset[i][0]; const int nb_col = col - sig_ref_offset[i][1]; if (!(nb_row >= 0 && nb_col >= 0 && nb_row < txb_info->height && nb_col < txb_info->stride)) continue; const int nb_coeff_idx = nb_row * txb_info->stride + nb_col; const int nb_scan_idx = iscan[nb_coeff_idx]; if (nb_scan_idx < eob) { const int scan_idx = iscan[coeff_idx]; if (scan_idx < nb_scan_idx) { const int level = 1; if (abs_qc == level) { txb_cache->nz_count_arr[nb_coeff_idx] -= 1; assert(txb_cache->nz_count_arr[nb_coeff_idx] >= 0); } const int count = txb_cache->nz_count_arr[nb_coeff_idx]; txb_cache->nz_ctx_arr[nb_coeff_idx] = get_nz_map_ctx_from_count( count, nb_coeff_idx, txb_info->bwl, txb_info->tx_type); // int ref_ctx = get_nz_map_ctx(txb_info->qcoeff, nb_coeff_idx, // txb_info->bwl, tx_type); // if (ref_ctx != txb_cache->nz_ctx_arr[nb_coeff_idx]) // printf("nz ctx %d ref_ctx %d\n", // txb_cache->nz_ctx_arr[nb_coeff_idx], ref_ctx); } } } const BASE_CTX_TABLE *base_ctx_table = txb_info->coeff_ctx_table->base_ctx_table; for (int i = 0; i < BASE_CONTEXT_POSITION_NUM; ++i) { const int nb_row = row - base_ref_offset[i][0]; const int nb_col = col - base_ref_offset[i][1]; const int nb_coeff_idx = nb_row * txb_info->stride + nb_col; if (!(nb_row >= 0 && nb_col >= 0 && nb_row < txb_info->height && nb_col < txb_info->stride)) continue; const tran_low_t nb_coeff = txb_info->qcoeff[nb_coeff_idx]; if (!has_base(nb_coeff, 0)) continue; const int nb_scan_idx = iscan[nb_coeff_idx]; if (nb_scan_idx < eob) { if (row >= nb_row && col >= nb_col) update_mag_arr(txb_cache->base_mag_arr[nb_coeff_idx], abs_qc); const int mag = get_mag_from_mag_arr(txb_cache->base_mag_arr[nb_coeff_idx]); for (int base_idx = 0; base_idx < NUM_BASE_LEVELS; ++base_idx) { if (!has_base(nb_coeff, base_idx)) continue; const int level = base_idx + 1; if (abs_qc == level) { txb_cache->base_count_arr[base_idx][nb_coeff_idx] -= 1; assert(txb_cache->base_count_arr[base_idx][nb_coeff_idx] >= 0); } const int count = txb_cache->base_count_arr[base_idx][nb_coeff_idx]; txb_cache->base_ctx_arr[base_idx][nb_coeff_idx] = base_ctx_table[nb_row != 0][nb_col != 0][mag > level][count]; // int ref_ctx = get_base_ctx(txb_info->qcoeff, nb_coeff_idx, // txb_info->bwl, level); // if (ref_ctx != txb_cache->base_ctx_arr[base_idx][nb_coeff_idx]) { // printf("base ctx %d ref_ctx %d\n", // txb_cache->base_ctx_arr[base_idx][nb_coeff_idx], ref_ctx); // } } } } for (int i = 0; i < BR_CONTEXT_POSITION_NUM; ++i) { const int nb_row = row - br_ref_offset[i][0]; const int nb_col = col - br_ref_offset[i][1]; const int nb_coeff_idx = nb_row * txb_info->stride + nb_col; if (!(nb_row >= 0 && nb_col >= 0 && nb_row < txb_info->height && nb_col < txb_info->stride)) continue; const int nb_scan_idx = iscan[nb_coeff_idx]; const tran_low_t nb_coeff = txb_info->qcoeff[nb_coeff_idx]; if (!has_br(nb_coeff)) continue; if (nb_scan_idx < eob) { const int level = 1 + NUM_BASE_LEVELS; if (abs_qc == level) { txb_cache->br_count_arr[nb_coeff_idx] -= 1; assert(txb_cache->br_count_arr[nb_coeff_idx] >= 0); } if (row >= nb_row && col >= nb_col) update_mag_arr(txb_cache->br_mag_arr[nb_coeff_idx], abs_qc); const int count = txb_cache->br_count_arr[nb_coeff_idx]; const int mag = get_mag_from_mag_arr(txb_cache->br_mag_arr[nb_coeff_idx]); txb_cache->br_ctx_arr[nb_coeff_idx] = get_br_ctx_from_count_mag(nb_row, nb_col, count, mag); // int ref_ctx = get_level_ctx(txb_info->qcoeff, nb_coeff_idx, // txb_info->bwl); // if (ref_ctx != txb_cache->br_ctx_arr[nb_coeff_idx]) { // printf("base ctx %d ref_ctx %d\n", // txb_cache->br_ctx_arr[nb_coeff_idx], ref_ctx); // } } } } static int get_coeff_cost(tran_low_t qc, int scan_idx, TxbInfo *txb_info, const LV_MAP_COEFF_COST *txb_costs) { const TXB_CTX *txb_ctx = txb_info->txb_ctx; const int is_nz = (qc != 0); const tran_low_t abs_qc = abs(qc); int cost = 0; const int16_t *scan = txb_info->scan_order->scan; if (scan_idx < txb_info->seg_eob) { int coeff_ctx = get_nz_map_ctx(txb_info->qcoeff, scan_idx, scan, txb_info->bwl, txb_info->height, txb_info->tx_type); cost += txb_costs->nz_map_cost[coeff_ctx][is_nz]; } if (is_nz) { cost += get_sign_bit_cost(qc, scan_idx, txb_costs->dc_sign_cost, txb_ctx->dc_sign_ctx); int ctx_ls[NUM_BASE_LEVELS] = { 0 }; get_base_ctx_set(txb_info->qcoeff, scan[scan_idx], txb_info->bwl, txb_info->height, ctx_ls); int i; for (i = 0; i < NUM_BASE_LEVELS; ++i) { cost += get_base_cost(abs_qc, ctx_ls[i], txb_costs->base_cost[i][ctx_ls[i]], i); } if (abs_qc > NUM_BASE_LEVELS) { int ctx = get_br_ctx(txb_info->qcoeff, scan[scan_idx], txb_info->bwl, txb_info->height); cost += get_br_cost(abs_qc, ctx, txb_costs->lps_cost[ctx]); cost += get_golomb_cost(abs_qc); } if (scan_idx < txb_info->seg_eob) { int eob_ctx = get_eob_ctx(txb_info->qcoeff, scan[scan_idx], txb_info->txs_ctx, txb_info->tx_type); cost += txb_costs->eob_cost[eob_ctx][scan_idx == (txb_info->eob - 1)]; } } return cost; } #if TEST_OPTIMIZE_TXB #define ALL_REF_OFFSET_NUM 17 static int all_ref_offset[ALL_REF_OFFSET_NUM][2] = { { 0, 0 }, { -2, -1 }, { -2, 0 }, { -2, 1 }, { -1, -2 }, { -1, -1 }, { -1, 0 }, { -1, 1 }, { 0, -2 }, { 0, -1 }, { 1, -2 }, { 1, -1 }, { 1, 0 }, { 2, 0 }, { 0, 1 }, { 0, 2 }, { 1, 1 }, }; static int try_level_down_ref(int coeff_idx, const LV_MAP_COEFF_COST *txb_costs, TxbInfo *txb_info, int (*cost_map)[COST_MAP_SIZE]) { if (cost_map) { for (int i = 0; i < COST_MAP_SIZE; ++i) av1_zero(cost_map[i]); } tran_low_t qc = txb_info->qcoeff[coeff_idx]; if (qc == 0) return 0; int row = coeff_idx >> txb_info->bwl; int col = coeff_idx - (row << txb_info->bwl); int org_cost = 0; for (int i = 0; i < ALL_REF_OFFSET_NUM; ++i) { int nb_row = row - all_ref_offset[i][0]; int nb_col = col - all_ref_offset[i][1]; int nb_coeff_idx = nb_row * txb_info->stride + nb_col; int nb_scan_idx = txb_info->scan_order->iscan[nb_coeff_idx]; if (nb_scan_idx < txb_info->eob && nb_row >= 0 && nb_col >= 0 && nb_row < txb_info->height && nb_col < txb_info->stride) { tran_low_t nb_coeff = txb_info->qcoeff[nb_coeff_idx]; int cost = get_coeff_cost(nb_coeff, nb_scan_idx, txb_info, txb_costs); if (cost_map) cost_map[nb_row - row + COST_MAP_OFFSET] [nb_col - col + COST_MAP_OFFSET] -= cost; org_cost += cost; } } txb_info->qcoeff[coeff_idx] = get_lower_coeff(qc); int new_cost = 0; for (int i = 0; i < ALL_REF_OFFSET_NUM; ++i) { int nb_row = row - all_ref_offset[i][0]; int nb_col = col - all_ref_offset[i][1]; int nb_coeff_idx = nb_row * txb_info->stride + nb_col; int nb_scan_idx = txb_info->scan_order->iscan[nb_coeff_idx]; if (nb_scan_idx < txb_info->eob && nb_row >= 0 && nb_col >= 0 && nb_row < txb_info->height && nb_col < txb_info->stride) { tran_low_t nb_coeff = txb_info->qcoeff[nb_coeff_idx]; int cost = get_coeff_cost(nb_coeff, nb_scan_idx, txb_info, txb_costs); if (cost_map) cost_map[nb_row - row + COST_MAP_OFFSET] [nb_col - col + COST_MAP_OFFSET] += cost; new_cost += cost; } } txb_info->qcoeff[coeff_idx] = qc; return new_cost - org_cost; } static void test_level_down(int coeff_idx, const TxbCache *txb_cache, const LV_MAP_COEFF_COST *txb_costs, TxbInfo *txb_info) { int cost_map[COST_MAP_SIZE][COST_MAP_SIZE]; int ref_cost_map[COST_MAP_SIZE][COST_MAP_SIZE]; const int cost_diff = try_level_down(coeff_idx, txb_cache, txb_costs, txb_info, cost_map, 0); const int cost_diff_ref = try_level_down_ref(coeff_idx, txb_costs, txb_info, ref_cost_map); if (cost_diff != cost_diff_ref) { printf("qc %d cost_diff %d cost_diff_ref %d\n", txb_info->qcoeff[coeff_idx], cost_diff, cost_diff_ref); for (int r = 0; r < COST_MAP_SIZE; ++r) { for (int c = 0; c < COST_MAP_SIZE; ++c) { printf("%d:%d ", cost_map[r][c], ref_cost_map[r][c]); } printf("\n"); } } } #endif // TODO(angiebird): make this static once it's called int get_txb_cost(TxbInfo *txb_info, const LV_MAP_COEFF_COST *txb_costs) { int cost = 0; int txb_skip_ctx = txb_info->txb_ctx->txb_skip_ctx; const int16_t *scan = txb_info->scan_order->scan; if (txb_info->eob == 0) { cost = txb_costs->txb_skip_cost[txb_skip_ctx][1]; return cost; } cost = txb_costs->txb_skip_cost[txb_skip_ctx][0]; for (int c = 0; c < txb_info->eob; ++c) { tran_low_t qc = txb_info->qcoeff[scan[c]]; int coeff_cost = get_coeff_cost(qc, c, txb_info, txb_costs); cost += coeff_cost; } return cost; } #if TEST_OPTIMIZE_TXB void test_try_change_eob(TxbInfo *txb_info, const LV_MAP_COEFF_COST *txb_costs, TxbCache *txb_cache) { int eob = txb_info->eob; const int16_t *scan = txb_info->scan_order->scan; if (eob > 0) { int last_si = eob - 1; int last_ci = scan[last_si]; int last_coeff = txb_info->qcoeff[last_ci]; if (abs(last_coeff) == 1) { int new_eob; int cost_diff = try_change_eob(&new_eob, last_ci, txb_cache, txb_costs, txb_info, 0); int org_eob = txb_info->eob; int cost = get_txb_cost(txb_info, txb_costs); txb_info->qcoeff[last_ci] = get_lower_coeff(last_coeff); set_eob(txb_info, new_eob); int new_cost = get_txb_cost(txb_info, txb_costs); set_eob(txb_info, org_eob); txb_info->qcoeff[last_ci] = last_coeff; int ref_cost_diff = -cost + new_cost; if (cost_diff != ref_cost_diff) printf("org_eob %d new_eob %d cost_diff %d ref_cost_diff %d\n", org_eob, new_eob, cost_diff, ref_cost_diff); } } } #endif static INLINE int64_t get_coeff_dist(tran_low_t tcoeff, tran_low_t dqcoeff, int shift) { const int64_t diff = (tcoeff - dqcoeff) * (1 << shift); const int64_t error = diff * diff; return error; } typedef struct LevelDownStats { int update; tran_low_t low_qc; tran_low_t low_dqc; int64_t rd_diff; int cost_diff; int64_t dist_diff; int new_eob; } LevelDownStats; void try_level_down_facade(LevelDownStats *stats, int scan_idx, const TxbCache *txb_cache, const LV_MAP_COEFF_COST *txb_costs, TxbInfo *txb_info, int fast_mode) { const int16_t *scan = txb_info->scan_order->scan; const int coeff_idx = scan[scan_idx]; const tran_low_t qc = txb_info->qcoeff[coeff_idx]; stats->new_eob = -1; stats->update = 0; if (qc == 0) { return; } const tran_low_t tqc = txb_info->tcoeff[coeff_idx]; const int dqv = txb_info->dequant[coeff_idx != 0]; const tran_low_t dqc = qcoeff_to_dqcoeff(qc, dqv, txb_info->shift); const int64_t dqc_dist = get_coeff_dist(tqc, dqc, txb_info->shift); stats->low_qc = get_lower_coeff(qc); stats->low_dqc = qcoeff_to_dqcoeff(stats->low_qc, dqv, txb_info->shift); const int64_t low_dqc_dist = get_coeff_dist(tqc, stats->low_dqc, txb_info->shift); stats->dist_diff = -dqc_dist + low_dqc_dist; stats->cost_diff = 0; stats->new_eob = txb_info->eob; if (scan_idx == txb_info->eob - 1 && abs(qc) == 1) { stats->cost_diff = try_change_eob(&stats->new_eob, coeff_idx, txb_cache, txb_costs, txb_info, fast_mode); } else { stats->cost_diff = try_level_down(coeff_idx, txb_cache, txb_costs, txb_info, NULL, fast_mode); #if TEST_OPTIMIZE_TXB test_level_down(coeff_idx, txb_cache, txb_costs, txb_info); #endif } stats->rd_diff = RDCOST(txb_info->rdmult, stats->cost_diff, stats->dist_diff); if (stats->rd_diff < 0) stats->update = 1; return; } static int optimize_txb(TxbInfo *txb_info, const LV_MAP_COEFF_COST *txb_costs, TxbCache *txb_cache, int dry_run, int fast_mode) { int update = 0; if (txb_info->eob == 0) return update; int cost_diff = 0; int64_t dist_diff = 0; int64_t rd_diff = 0; const int max_eob = tx_size_2d[txb_info->tx_size]; #if TEST_OPTIMIZE_TXB int64_t sse; int64_t org_dist = av1_block_error_c(txb_info->tcoeff, txb_info->dqcoeff, max_eob, &sse) * (1 << (2 * txb_info->shift)); int org_cost = get_txb_cost(txb_info, txb_costs); #endif tran_low_t *org_qcoeff = txb_info->qcoeff; tran_low_t *org_dqcoeff = txb_info->dqcoeff; tran_low_t tmp_qcoeff[MAX_TX_SQUARE]; tran_low_t tmp_dqcoeff[MAX_TX_SQUARE]; const int org_eob = txb_info->eob; if (dry_run) { memcpy(tmp_qcoeff, org_qcoeff, sizeof(org_qcoeff[0]) * max_eob); memcpy(tmp_dqcoeff, org_dqcoeff, sizeof(org_dqcoeff[0]) * max_eob); txb_info->qcoeff = tmp_qcoeff; txb_info->dqcoeff = tmp_dqcoeff; } const int16_t *scan = txb_info->scan_order->scan; // forward optimize the nz_map const int cur_eob = txb_info->eob; for (int si = 0; si < cur_eob; ++si) { const int coeff_idx = scan[si]; tran_low_t qc = txb_info->qcoeff[coeff_idx]; if (abs(qc) == 1) { LevelDownStats stats; try_level_down_facade(&stats, si, txb_cache, txb_costs, txb_info, fast_mode); if (stats.update) { update = 1; cost_diff += stats.cost_diff; dist_diff += stats.dist_diff; rd_diff += stats.rd_diff; update_level_down(coeff_idx, txb_cache, txb_info); set_eob(txb_info, stats.new_eob); } } } // backward optimize the level-k map int eob_fix = 0; for (int si = txb_info->eob - 1; si >= 0; --si) { const int coeff_idx = scan[si]; if (eob_fix == 1 && txb_info->qcoeff[coeff_idx] == 1) { // when eob is fixed, there is not need to optimize again when // abs(qc) == 1 continue; } LevelDownStats stats; try_level_down_facade(&stats, si, txb_cache, txb_costs, txb_info, fast_mode); if (stats.update) { #if TEST_OPTIMIZE_TXB // printf("si %d low_qc %d cost_diff %d dist_diff %ld rd_diff %ld eob %d new_eob // %d\n", si, stats.low_qc, stats.cost_diff, stats.dist_diff, stats.rd_diff, // txb_info->eob, stats.new_eob); #endif update = 1; cost_diff += stats.cost_diff; dist_diff += stats.dist_diff; rd_diff += stats.rd_diff; update_level_down(coeff_idx, txb_cache, txb_info); set_eob(txb_info, stats.new_eob); } if (eob_fix == 0 && txb_info->qcoeff[coeff_idx] != 0) eob_fix = 1; if (si > txb_info->eob) si = txb_info->eob; } #if TEST_OPTIMIZE_TXB int64_t new_dist = av1_block_error_c(txb_info->tcoeff, txb_info->dqcoeff, max_eob, &sse) * (1 << (2 * txb_info->shift)); int new_cost = get_txb_cost(txb_info, txb_costs); int64_t ref_dist_diff = new_dist - org_dist; int ref_cost_diff = new_cost - org_cost; if (cost_diff != ref_cost_diff || dist_diff != ref_dist_diff) printf( "overall rd_diff %ld\ncost_diff %d ref_cost_diff%d\ndist_diff %ld " "ref_dist_diff %ld\neob %d new_eob %d\n\n", rd_diff, cost_diff, ref_cost_diff, dist_diff, ref_dist_diff, org_eob, txb_info->eob); #endif if (dry_run) { txb_info->qcoeff = org_qcoeff; txb_info->dqcoeff = org_dqcoeff; set_eob(txb_info, org_eob); } return update; } // These numbers are empirically obtained. static const int plane_rd_mult[REF_TYPES][PLANE_TYPES] = { { 17, 13 }, { 16, 10 }, }; int av1_optimize_txb(const AV1_COMMON *cm, MACROBLOCK *x, int plane, int blk_row, int blk_col, int block, TX_SIZE tx_size, TXB_CTX *txb_ctx, int fast_mode) { MACROBLOCKD *const xd = &x->e_mbd; const PLANE_TYPE plane_type = get_plane_type(plane); const TX_SIZE txs_ctx = get_txsize_context(tx_size); const TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, tx_size); const MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi; const struct macroblock_plane *p = &x->plane[plane]; struct macroblockd_plane *pd = &xd->plane[plane]; const int eob = p->eobs[block]; tran_low_t *qcoeff = BLOCK_OFFSET(p->qcoeff, block); tran_low_t *dqcoeff = BLOCK_OFFSET(pd->dqcoeff, block); const tran_low_t *tcoeff = BLOCK_OFFSET(p->coeff, block); const int16_t *dequant = pd->dequant; const int seg_eob = AOMMIN(eob, tx_size_2d[tx_size] - 1); const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2; const int stride = 1 << bwl; const int height = tx_size_high[tx_size]; const int is_inter = is_inter_block(mbmi); const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi); const LV_MAP_COEFF_COST txb_costs = x->coeff_costs[txs_ctx][plane_type]; const int shift = av1_get_tx_scale(tx_size); const int64_t rdmult = (x->rdmult * plane_rd_mult[is_inter][plane_type] + 2) >> 2; TxbInfo txb_info = { qcoeff, dqcoeff, tcoeff, dequant, shift, tx_size, txs_ctx, tx_type, bwl, stride, height, eob, seg_eob, scan_order, txb_ctx, rdmult, &cm->coeff_ctx_table }; TxbCache txb_cache; gen_txb_cache(&txb_cache, &txb_info); const int update = optimize_txb(&txb_info, &txb_costs, &txb_cache, 0, fast_mode); if (update) p->eobs[block] = txb_info.eob; return txb_info.eob; } int av1_get_txb_entropy_context(const tran_low_t *qcoeff, const SCAN_ORDER *scan_order, int eob) { const int16_t *scan = scan_order->scan; int cul_level = 0; int c; if (eob == 0) return 0; for (c = 0; c < eob; ++c) { cul_level += abs(qcoeff[scan[c]]); } cul_level = AOMMIN(COEFF_CONTEXT_MASK, cul_level); set_dc_sign(&cul_level, qcoeff[0]); return cul_level; } void av1_update_txb_context_b(int plane, int block, int blk_row, int blk_col, BLOCK_SIZE plane_bsize, TX_SIZE tx_size, void *arg) { struct tokenize_b_args *const args = arg; const AV1_COMP *cpi = args->cpi; const AV1_COMMON *cm = &cpi->common; ThreadData *const td = args->td; MACROBLOCK *const x = &td->mb; MACROBLOCKD *const xd = &x->e_mbd; MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi; struct macroblock_plane *p = &x->plane[plane]; struct macroblockd_plane *pd = &xd->plane[plane]; const uint16_t eob = p->eobs[block]; const tran_low_t *qcoeff = BLOCK_OFFSET(p->qcoeff, block); const PLANE_TYPE plane_type = pd->plane_type; const TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, tx_size); const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi); (void)plane_bsize; int cul_level = av1_get_txb_entropy_context(qcoeff, scan_order, eob); av1_set_contexts(xd, pd, plane, tx_size, cul_level, blk_col, blk_row); } static INLINE void av1_update_nz_eob_counts(FRAME_CONTEXT *fc, FRAME_COUNTS *counts, uint16_t eob, const tran_low_t *tcoeff, int plane, TX_SIZE tx_size, TX_TYPE tx_type, const int16_t *scan) { const PLANE_TYPE plane_type = get_plane_type(plane); const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2; const int height = tx_size_high[tx_size]; TX_SIZE txsize_ctx = get_txsize_context(tx_size); #if CONFIG_CTX1D const int width = tx_size_wide[tx_size]; const int eob_offset = width + height; const TX_CLASS tx_class = get_tx_class(tx_type); const int seg_eob = (tx_class == TX_CLASS_2D) ? tx_size_2d[tx_size] : eob_offset; #else const int seg_eob = tx_size_2d[tx_size]; #endif unsigned int(*nz_map_count)[SIG_COEF_CONTEXTS][2] = &counts->nz_map[txsize_ctx][plane_type]; for (int c = 0; c < eob; ++c) { tran_low_t v = tcoeff[scan[c]]; int is_nz = (v != 0); int coeff_ctx = get_nz_map_ctx(tcoeff, c, scan, bwl, height, tx_type); int eob_ctx = get_eob_ctx(tcoeff, scan[c], txsize_ctx, tx_type); if (c == seg_eob - 1) break; ++(*nz_map_count)[coeff_ctx][is_nz]; #if LV_MAP_PROB update_bin(fc->nz_map_cdf[txsize_ctx][plane_type][coeff_ctx], is_nz, 2); #endif if (is_nz) { ++counts->eob_flag[txsize_ctx][plane_type][eob_ctx][c == (eob - 1)]; #if LV_MAP_PROB update_bin(fc->eob_flag_cdf[txsize_ctx][plane_type][eob_ctx], c == (eob - 1), 2); #endif } } } #if CONFIG_CTX1D static INLINE void av1_update_nz_eob_counts_vert( FRAME_CONTEXT *fc, FRAME_COUNTS *counts, uint16_t eob, const tran_low_t *tcoeff, int plane, TX_SIZE tx_size, TX_TYPE tx_type, const int16_t *scan, const int16_t *iscan) { (void)eob; const TX_SIZE txs_ctx = get_txsize_context(tx_size); const PLANE_TYPE plane_type = get_plane_type(plane); const TX_CLASS tx_class = get_tx_class(tx_type); const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2; const int width = tx_size_wide[tx_size]; const int height = tx_size_high[tx_size]; int16_t eob_ls[MAX_HVTX_SIZE]; get_eob_vert(eob_ls, tcoeff, width, height); unsigned int(*nz_map_count)[SIG_COEF_CONTEXTS][2] = &counts->nz_map[txs_ctx][plane_type]; for (int c = 0; c < width; ++c) { int16_t veob = eob_ls[c]; assert(veob <= height); int el_ctx = get_empty_line_ctx(c, eob_ls); ++counts->empty_line[txs_ctx][plane_type][tx_class][el_ctx][veob == 0]; #if LV_MAP_PROB update_bin(fc->empty_line_cdf[txs_ctx][plane_type][tx_class][el_ctx], veob == 0, 2); #endif if (veob) { for (int r = 0; r < veob; ++r) { if (r + 1 != height) { int coeff_idx = r * width + c; int scan_idx = iscan[coeff_idx]; int is_nz = tcoeff[coeff_idx] != 0; int coeff_ctx = get_nz_map_ctx(tcoeff, scan_idx, scan, bwl, height, tx_type); ++(*nz_map_count)[coeff_ctx][is_nz]; #if LV_MAP_PROB update_bin(fc->nz_map_cdf[txs_ctx][plane_type][coeff_ctx], is_nz, 2); #endif if (is_nz) { int eob_ctx = get_hv_eob_ctx(c, r, eob_ls); ++counts->hv_eob[txs_ctx][plane_type][tx_class][eob_ctx] [r == veob - 1]; #if LV_MAP_PROB update_bin(fc->hv_eob_cdf[txs_ctx][plane_type][tx_class][eob_ctx], r == veob - 1, 2); #endif } } } } } } static INLINE void av1_update_nz_eob_counts_horiz( FRAME_CONTEXT *fc, FRAME_COUNTS *counts, uint16_t eob, const tran_low_t *tcoeff, int plane, TX_SIZE tx_size, TX_TYPE tx_type, const int16_t *scan, const int16_t *iscan) { (void)eob; (void)scan; const TX_SIZE txs_ctx = get_txsize_context(tx_size); const PLANE_TYPE plane_type = get_plane_type(plane); const TX_CLASS tx_class = get_tx_class(tx_type); const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2; const int width = tx_size_wide[tx_size]; const int height = tx_size_high[tx_size]; int16_t eob_ls[MAX_HVTX_SIZE]; get_eob_horiz(eob_ls, tcoeff, width, height); unsigned int(*nz_map_count)[SIG_COEF_CONTEXTS][2] = &counts->nz_map[txs_ctx][plane_type]; for (int r = 0; r < height; ++r) { int16_t heob = eob_ls[r]; int el_ctx = get_empty_line_ctx(r, eob_ls); ++counts->empty_line[txs_ctx][plane_type][tx_class][el_ctx][heob == 0]; #if LV_MAP_PROB update_bin(fc->empty_line_cdf[txs_ctx][plane_type][tx_class][el_ctx], heob == 0, 2); #endif if (heob) { for (int c = 0; c < heob; ++c) { if (c + 1 != width) { int coeff_idx = r * width + c; int scan_idx = iscan[coeff_idx]; int is_nz = tcoeff[coeff_idx] != 0; int coeff_ctx = get_nz_map_ctx(tcoeff, scan_idx, scan, bwl, height, tx_type); ++(*nz_map_count)[coeff_ctx][is_nz]; #if LV_MAP_PROB update_bin(fc->nz_map_cdf[txs_ctx][plane_type][coeff_ctx], is_nz, 2); #endif if (is_nz) { int eob_ctx = get_hv_eob_ctx(r, c, eob_ls); ++counts->hv_eob[txs_ctx][plane_type][tx_class][eob_ctx] [c == heob - 1]; #if LV_MAP_PROB update_bin(fc->hv_eob_cdf[txs_ctx][plane_type][tx_class][eob_ctx], c == heob - 1, 2); #endif } } } } } } #endif // CONFIG_CTX1D void av1_update_and_record_txb_context(int plane, int block, int blk_row, int blk_col, BLOCK_SIZE plane_bsize, TX_SIZE tx_size, void *arg) { struct tokenize_b_args *const args = arg; const AV1_COMP *cpi = args->cpi; const AV1_COMMON *cm = &cpi->common; ThreadData *const td = args->td; MACROBLOCK *const x = &td->mb; MACROBLOCKD *const xd = &x->e_mbd; struct macroblock_plane *p = &x->plane[plane]; struct macroblockd_plane *pd = &xd->plane[plane]; MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi; int eob = p->eobs[block], update_eob = 0; const PLANE_TYPE plane_type = pd->plane_type; const tran_low_t *qcoeff = BLOCK_OFFSET(p->qcoeff, block); tran_low_t *tcoeff = BLOCK_OFFSET(x->mbmi_ext->tcoeff[plane], block); const int segment_id = mbmi->segment_id; const TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, tx_size); const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi); const int16_t *scan = scan_order->scan; const int seg_eob = av1_get_tx_eob(&cpi->common.seg, segment_id, tx_size); int c, i; TXB_CTX txb_ctx; get_txb_ctx(plane_bsize, tx_size, plane, pd->above_context + blk_col, pd->left_context + blk_row, &txb_ctx); const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2; const int height = tx_size_high[tx_size]; int cul_level = 0; TX_SIZE txsize_ctx = get_txsize_context(tx_size); FRAME_CONTEXT *ec_ctx = xd->tile_ctx; memcpy(tcoeff, qcoeff, sizeof(*tcoeff) * seg_eob); ++td->counts->txb_skip[txsize_ctx][txb_ctx.txb_skip_ctx][eob == 0]; #if LV_MAP_PROB update_bin(ec_ctx->txb_skip_cdf[txsize_ctx][txb_ctx.txb_skip_ctx], eob == 0, 2); #endif x->mbmi_ext->txb_skip_ctx[plane][block] = txb_ctx.txb_skip_ctx; x->mbmi_ext->eobs[plane][block] = eob; if (eob == 0) { av1_set_contexts(xd, pd, plane, tx_size, 0, blk_col, blk_row); return; } #if CONFIG_TXK_SEL av1_update_tx_type_count(cm, xd, blk_row, blk_col, block, plane, mbmi->sb_type, get_min_tx_size(tx_size), td->counts); #endif #if CONFIG_CTX1D TX_CLASS tx_class = get_tx_class(tx_type); if (tx_class == TX_CLASS_2D) { av1_update_nz_eob_counts(ec_ctx, td->counts, eob, tcoeff, plane, tx_size, tx_type, scan); } else { const int width = tx_size_wide[tx_size]; const int eob_offset = width + height; const int eob_mode = eob > eob_offset; const TX_SIZE txs_ctx = get_txsize_context(tx_size); ++td->counts->eob_mode[txs_ctx][plane_type][tx_class][eob_mode]; #if LV_MAP_PROB update_bin(ec_ctx->eob_mode_cdf[txs_ctx][plane_type][tx_class], eob_mode, 2); #endif if (eob_mode == 0) { av1_update_nz_eob_counts(ec_ctx, td->counts, eob, tcoeff, plane, tx_size, tx_type, scan); } else { const int16_t *iscan = scan_order->iscan; assert(tx_class == TX_CLASS_VERT || tx_class == TX_CLASS_HORIZ); if (tx_class == TX_CLASS_VERT) av1_update_nz_eob_counts_vert(ec_ctx, td->counts, eob, tcoeff, plane, tx_size, tx_type, scan, iscan); else av1_update_nz_eob_counts_horiz(ec_ctx, td->counts, eob, tcoeff, plane, tx_size, tx_type, scan, iscan); } } #else // CONFIG_CTX1D av1_update_nz_eob_counts(ec_ctx, td->counts, eob, tcoeff, plane, tx_size, tx_type, scan); #endif // CONFIG_CTX1D // Reverse process order to handle coefficient level and sign. for (i = 0; i < NUM_BASE_LEVELS; ++i) { update_eob = 0; for (c = eob - 1; c >= 0; --c) { tran_low_t v = qcoeff[scan[c]]; tran_low_t level = abs(v); int ctx; if (level <= i) continue; ctx = get_base_ctx(tcoeff, scan[c], bwl, height, i + 1); if (level == i + 1) { ++td->counts->coeff_base[txsize_ctx][plane_type][i][ctx][1]; #if LV_MAP_PROB update_bin(ec_ctx->coeff_base_cdf[txsize_ctx][plane_type][i][ctx], 1, 2); #endif if (c == 0) { int dc_sign_ctx = txb_ctx.dc_sign_ctx; ++td->counts->dc_sign[plane_type][dc_sign_ctx][v < 0]; #if LV_MAP_PROB update_bin(ec_ctx->dc_sign_cdf[plane_type][dc_sign_ctx], v < 0, 2); #endif x->mbmi_ext->dc_sign_ctx[plane][block] = dc_sign_ctx; } cul_level += level; continue; } ++td->counts->coeff_base[txsize_ctx][plane_type][i][ctx][0]; #if LV_MAP_PROB update_bin(ec_ctx->coeff_base_cdf[txsize_ctx][plane_type][i][ctx], 0, 2); #endif update_eob = AOMMAX(update_eob, c); } } for (c = update_eob; c >= 0; --c) { tran_low_t v = qcoeff[scan[c]]; tran_low_t level = abs(v); int idx; int ctx; if (level <= NUM_BASE_LEVELS) continue; cul_level += level; if (c == 0) { int dc_sign_ctx = txb_ctx.dc_sign_ctx; ++td->counts->dc_sign[plane_type][dc_sign_ctx][v < 0]; #if LV_MAP_PROB update_bin(ec_ctx->dc_sign_cdf[plane_type][dc_sign_ctx], v < 0, 2); #endif x->mbmi_ext->dc_sign_ctx[plane][block] = dc_sign_ctx; } // level is above 1. ctx = get_br_ctx(tcoeff, scan[c], bwl, height); #if BR_NODE int base_range = level - 1 - NUM_BASE_LEVELS; int br_set_idx = base_range < COEFF_BASE_RANGE ? coeff_to_br_index[base_range] : BASE_RANGE_SETS; for (idx = 0; idx < BASE_RANGE_SETS; ++idx) { if (idx == br_set_idx) { int br_base = br_index_to_coeff[br_set_idx]; int br_offset = base_range - br_base; ++td->counts->coeff_br[txsize_ctx][plane_type][idx][ctx][1]; #if LV_MAP_PROB update_bin(ec_ctx->coeff_br_cdf[txsize_ctx][plane_type][idx][ctx], 1, 2); #endif int extra_bits = (1 << br_extra_bits[idx]) - 1; for (int tok = 0; tok < extra_bits; ++tok) { if (br_offset == tok) { ++td->counts->coeff_lps[txsize_ctx][plane_type][ctx][1]; #if LV_MAP_PROB update_bin(ec_ctx->coeff_lps_cdf[txsize_ctx][plane_type][ctx], 1, 2); #endif break; } ++td->counts->coeff_lps[txsize_ctx][plane_type][ctx][0]; #if LV_MAP_PROB update_bin(ec_ctx->coeff_lps_cdf[txsize_ctx][plane_type][ctx], 0, 2); #endif } break; } ++td->counts->coeff_br[txsize_ctx][plane_type][idx][ctx][0]; #if LV_MAP_PROB update_bin(ec_ctx->coeff_br_cdf[txsize_ctx][plane_type][idx][ctx], 0, 2); #endif } #else // BR_NODE for (idx = 0; idx < COEFF_BASE_RANGE; ++idx) { if (level == (idx + 1 + NUM_BASE_LEVELS)) { ++td->counts->coeff_lps[txsize_ctx][plane_type][ctx][1]; #if LV_MAP_PROB update_bin(ec_ctx->coeff_lps_cdf[txsize_ctx][plane_type][ctx], 1, 2); #endif break; } ++td->counts->coeff_lps[txsize_ctx][plane_type][ctx][0]; #if LV_MAP_PROB update_bin(ec_ctx->coeff_lps_cdf[txsize_ctx][plane_type][ctx], 0, 2); #endif } if (idx < COEFF_BASE_RANGE) continue; #endif // BR_NODE // use 0-th order Golomb code to handle the residual level. } cul_level = AOMMIN(COEFF_CONTEXT_MASK, cul_level); // DC value set_dc_sign(&cul_level, tcoeff[0]); av1_set_contexts(xd, pd, plane, tx_size, cul_level, blk_col, blk_row); #if CONFIG_ADAPT_SCAN // Since dqcoeff is not available here, we pass qcoeff into // av1_update_scan_count_facade(). The update behavior should be the same // because av1_update_scan_count_facade() only cares if coefficients are zero // or not. av1_update_scan_count_facade((AV1_COMMON *)cm, td->counts, tx_size, tx_type, qcoeff, eob); #endif } void av1_update_txb_context(const AV1_COMP *cpi, ThreadData *td, RUN_TYPE dry_run, BLOCK_SIZE bsize, int *rate, int mi_row, int mi_col) { const AV1_COMMON *const cm = &cpi->common; MACROBLOCK *const x = &td->mb; MACROBLOCKD *const xd = &x->e_mbd; MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi; const int ctx = av1_get_skip_context(xd); const int skip_inc = !segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP); struct tokenize_b_args arg = { cpi, td, NULL, 0 }; (void)rate; (void)mi_row; (void)mi_col; if (mbmi->skip) { if (!dry_run) td->counts->skip[ctx][1] += skip_inc; av1_reset_skip_context(xd, mi_row, mi_col, bsize); return; } if (!dry_run) { td->counts->skip[ctx][0] += skip_inc; av1_foreach_transformed_block(xd, bsize, mi_row, mi_col, av1_update_and_record_txb_context, &arg); } else if (dry_run == DRY_RUN_NORMAL) { av1_foreach_transformed_block(xd, bsize, mi_row, mi_col, av1_update_txb_context_b, &arg); } else { printf("DRY_RUN_COSTCOEFFS is not supported yet\n"); assert(0); } } static void find_new_prob(unsigned int *branch_cnt, aom_prob *oldp, int *savings, int *update, aom_writer *const bc) { const aom_prob upd = DIFF_UPDATE_PROB; int u = 0; aom_prob newp = get_binary_prob(branch_cnt[0], branch_cnt[1]); int s = av1_prob_diff_update_savings_search(branch_cnt, *oldp, &newp, upd, 1); if (s > 0 && newp != *oldp) u = 1; if (u) *savings += s - (int)(av1_cost_zero(upd)); // TODO(jingning): 1? else *savings -= (int)(av1_cost_zero(upd)); if (update) { ++update[u]; return; } aom_write(bc, u, upd); if (u) { /* send/use new probability */ av1_write_prob_diff_update(bc, newp, *oldp); *oldp = newp; } } static void write_txb_probs(aom_writer *const bc, AV1_COMP *cpi, TX_SIZE tx_size) { FRAME_CONTEXT *fc = cpi->common.fc; FRAME_COUNTS *counts = cpi->td.counts; int savings = 0; int update[2] = { 0, 0 }; int plane, ctx, level; for (ctx = 0; ctx < TXB_SKIP_CONTEXTS; ++ctx) { find_new_prob(counts->txb_skip[tx_size][ctx], &fc->txb_skip[tx_size][ctx], &savings, update, bc); } for (plane = 0; plane < PLANE_TYPES; ++plane) { for (ctx = 0; ctx < SIG_COEF_CONTEXTS; ++ctx) { find_new_prob(counts->nz_map[tx_size][plane][ctx], &fc->nz_map[tx_size][plane][ctx], &savings, update, bc); } } for (plane = 0; plane < PLANE_TYPES; ++plane) { for (ctx = 0; ctx < EOB_COEF_CONTEXTS; ++ctx) { find_new_prob(counts->eob_flag[tx_size][plane][ctx], &fc->eob_flag[tx_size][plane][ctx], &savings, update, bc); } } for (level = 0; level < NUM_BASE_LEVELS; ++level) { for (plane = 0; plane < PLANE_TYPES; ++plane) { for (ctx = 0; ctx < COEFF_BASE_CONTEXTS; ++ctx) { find_new_prob(counts->coeff_base[tx_size][plane][level][ctx], &fc->coeff_base[tx_size][plane][level][ctx], &savings, update, bc); } } } for (plane = 0; plane < PLANE_TYPES; ++plane) { for (ctx = 0; ctx < LEVEL_CONTEXTS; ++ctx) { find_new_prob(counts->coeff_lps[tx_size][plane][ctx], &fc->coeff_lps[tx_size][plane][ctx], &savings, update, bc); } } // Decide if to update the model for this tx_size if (update[1] == 0 || savings < 0) { aom_write_bit(bc, 0); return; } aom_write_bit(bc, 1); for (ctx = 0; ctx < TXB_SKIP_CONTEXTS; ++ctx) { find_new_prob(counts->txb_skip[tx_size][ctx], &fc->txb_skip[tx_size][ctx], &savings, NULL, bc); } for (plane = 0; plane < PLANE_TYPES; ++plane) { for (ctx = 0; ctx < SIG_COEF_CONTEXTS; ++ctx) { find_new_prob(counts->nz_map[tx_size][plane][ctx], &fc->nz_map[tx_size][plane][ctx], &savings, NULL, bc); } } for (plane = 0; plane < PLANE_TYPES; ++plane) { for (ctx = 0; ctx < EOB_COEF_CONTEXTS; ++ctx) { find_new_prob(counts->eob_flag[tx_size][plane][ctx], &fc->eob_flag[tx_size][plane][ctx], &savings, NULL, bc); } } for (level = 0; level < NUM_BASE_LEVELS; ++level) { for (plane = 0; plane < PLANE_TYPES; ++plane) { for (ctx = 0; ctx < COEFF_BASE_CONTEXTS; ++ctx) { find_new_prob(counts->coeff_base[tx_size][plane][level][ctx], &fc->coeff_base[tx_size][plane][level][ctx], &savings, NULL, bc); } } } for (plane = 0; plane < PLANE_TYPES; ++plane) { for (ctx = 0; ctx < LEVEL_CONTEXTS; ++ctx) { find_new_prob(counts->coeff_lps[tx_size][plane][ctx], &fc->coeff_lps[tx_size][plane][ctx], &savings, NULL, bc); } } } void av1_write_txb_probs(AV1_COMP *cpi, aom_writer *w) { const TX_MODE tx_mode = cpi->common.tx_mode; const TX_SIZE max_tx_size = tx_mode_to_biggest_tx_size[tx_mode]; TX_SIZE tx_size; int ctx, plane; #if LV_MAP_PROB return; #endif for (plane = 0; plane < PLANE_TYPES; ++plane) for (ctx = 0; ctx < DC_SIGN_CONTEXTS; ++ctx) av1_cond_prob_diff_update(w, &cpi->common.fc->dc_sign[plane][ctx], cpi->td.counts->dc_sign[plane][ctx], 1); for (tx_size = TX_4X4; tx_size <= max_tx_size; ++tx_size) write_txb_probs(w, cpi, tx_size); } #if CONFIG_TXK_SEL int64_t av1_search_txk_type(const AV1_COMP *cpi, MACROBLOCK *x, int plane, int block, int blk_row, int blk_col, BLOCK_SIZE plane_bsize, TX_SIZE tx_size, const ENTROPY_CONTEXT *a, const ENTROPY_CONTEXT *l, int use_fast_coef_costing, RD_STATS *rd_stats) { const AV1_COMMON *cm = &cpi->common; MACROBLOCKD *xd = &x->e_mbd; MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi; TX_TYPE txk_start = DCT_DCT; TX_TYPE txk_end = TX_TYPES - 1; TX_TYPE best_tx_type = txk_start; int64_t best_rd = INT64_MAX; uint8_t best_eob = 0; const int coeff_ctx = combine_entropy_contexts(*a, *l); RD_STATS best_rd_stats; TX_TYPE tx_type; av1_invalid_rd_stats(&best_rd_stats); for (tx_type = txk_start; tx_type <= txk_end; ++tx_type) { if (plane == 0) mbmi->txk_type[(blk_row << 4) + blk_col] = tx_type; TX_TYPE ref_tx_type = av1_get_tx_type(get_plane_type(plane), xd, blk_row, blk_col, block, tx_size); if (tx_type != ref_tx_type) { // use av1_get_tx_type() to check if the tx_type is valid for the current // mode if it's not, we skip it here. continue; } #if CONFIG_EXT_TX const int is_inter = is_inter_block(mbmi); const TxSetType tx_set_type = get_ext_tx_set_type(get_min_tx_size(tx_size), mbmi->sb_type, is_inter, cm->reduced_tx_set_used); if (!av1_ext_tx_used[tx_set_type][tx_type]) continue; #endif // CONFIG_EXT_TX RD_STATS this_rd_stats; av1_invalid_rd_stats(&this_rd_stats); av1_xform_quant(cm, x, plane, block, blk_row, blk_col, plane_bsize, tx_size, coeff_ctx, AV1_XFORM_QUANT_FP); av1_optimize_b(cm, x, plane, blk_row, blk_col, block, plane_bsize, tx_size, a, l, 1); av1_dist_block(cpi, x, plane, plane_bsize, block, blk_row, blk_col, tx_size, &this_rd_stats.dist, &this_rd_stats.sse, OUTPUT_HAS_PREDICTED_PIXELS); const SCAN_ORDER *scan_order = get_scan(cm, tx_size, tx_type, mbmi); this_rd_stats.rate = av1_cost_coeffs(cpi, x, plane, blk_row, blk_col, block, tx_size, scan_order, a, l, use_fast_coef_costing); int rd = RDCOST(x->rdmult, this_rd_stats.rate, this_rd_stats.dist); if (rd < best_rd) { best_rd = rd; best_rd_stats = this_rd_stats; best_tx_type = tx_type; best_eob = x->plane[plane].txb_entropy_ctx[block]; } } av1_merge_rd_stats(rd_stats, &best_rd_stats); if (best_eob == 0 && is_inter_block(mbmi)) best_tx_type = DCT_DCT; if (plane == 0) mbmi->txk_type[(blk_row << 4) + blk_col] = best_tx_type; x->plane[plane].txb_entropy_ctx[block] = best_eob; if (!is_inter_block(mbmi)) { // intra mode needs decoded result such that the next transform block // can use it for prediction. av1_xform_quant(cm, x, plane, block, blk_row, blk_col, plane_bsize, tx_size, coeff_ctx, AV1_XFORM_QUANT_FP); av1_optimize_b(cm, x, plane, blk_row, blk_col, block, plane_bsize, tx_size, a, l, 1); av1_inverse_transform_block_facade(xd, plane, block, blk_row, blk_col, x->plane[plane].eobs[block]); } return best_rd; } #endif // CONFIG_TXK_SEL