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Diffstat (limited to '')
| -rw-r--r-- | third_party/aom/av1/encoder/encodetxb.c | 2062 |
1 files changed, 2062 insertions, 0 deletions
diff --git a/third_party/aom/av1/encoder/encodetxb.c b/third_party/aom/av1/encoder/encodetxb.c new file mode 100644 index 0000000000..5a31d93d73 --- /dev/null +++ b/third_party/aom/av1/encoder/encodetxb.c @@ -0,0 +1,2062 @@ +/* + * 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/encoder/encodetxb.h" + +#include "aom_ports/mem.h" +#include "av1/common/blockd.h" +#include "av1/common/idct.h" +#include "av1/common/pred_common.h" +#include "av1/common/scan.h" +#include "av1/encoder/bitstream.h" +#include "av1/encoder/cost.h" +#include "av1/encoder/encodeframe.h" +#include "av1/encoder/hash.h" +#include "av1/encoder/rdopt.h" +#include "av1/encoder/tokenize.h" + +static int hbt_needs_init = 1; +static CRC32C crc_calculator; +static const int HBT_EOB = 16; // also the length in opt_qcoeff +static const int HBT_TABLE_SIZE = 65536; // 16 bit: holds 65536 'arrays' +static const int HBT_ARRAY_LENGTH = 256; // 8 bit: 256 entries +// If removed in hbt_create_hashes or increased beyond int8_t, widen deltas type +static const int HBT_KICKOUT = 3; + +typedef struct OptTxbQcoeff { + // Use larger type if larger/no kickout value is used in hbt_create_hashes + int8_t deltas[16]; + uint32_t hbt_qc_hash; + uint32_t hbt_ctx_hash; + int init; + int rate_cost; +} OptTxbQcoeff; + +OptTxbQcoeff *hbt_hash_table; + +typedef struct LevelDownStats { + int update; + tran_low_t low_qc; + tran_low_t low_dqc; + int64_t dist0; + int rate; + int rate_low; + int64_t dist; + int64_t dist_low; + int64_t rd; + int64_t rd_low; + int64_t nz_rd; + int64_t rd_diff; + int cost_diff; + int64_t dist_diff; + int new_eob; +} LevelDownStats; + +void av1_alloc_txb_buf(AV1_COMP *cpi) { + AV1_COMMON *cm = &cpi->common; + int size = ((cm->mi_rows >> cm->seq_params.mib_size_log2) + 1) * + ((cm->mi_cols >> cm->seq_params.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_memalign(32, sizeof(*cpi->coeff_buffer_base) * size)); +} + +void av1_free_txb_buf(AV1_COMP *cpi) { aom_free(cpi->coeff_buffer_base); } + +void av1_set_coeff_buffer(const AV1_COMP *const cpi, MACROBLOCK *const x, + int mi_row, int mi_col) { + const AV1_COMMON *const cm = &cpi->common; + const int num_planes = av1_num_planes(cm); + int mib_size_log2 = cm->seq_params.mib_size_log2; + int stride = (cm->mi_cols >> mib_size_log2) + 1; + int offset = (mi_row >> mib_size_log2) * stride + (mi_col >> 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); + assert(x->cb_offset < (1 << num_pels_log2_lookup[cm->seq_params.sb_size])); + for (int plane = 0; plane < num_planes; ++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 tran_low_t get_lower_coeff(tran_low_t qc) { + if (qc == 0) { + return 0; + } + return qc > 0 ? qc - 1 : qc + 1; +} + +static INLINE tran_low_t qcoeff_to_dqcoeff(tran_low_t qc, int coeff_idx, + int dqv, int shift, + const qm_val_t *iqmatrix) { + int sign = qc < 0 ? -1 : 1; + if (iqmatrix != NULL) + dqv = + ((iqmatrix[coeff_idx] * dqv) + (1 << (AOM_QM_BITS - 1))) >> AOM_QM_BITS; + return sign * ((abs(qc) * dqv) >> shift); +} + +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; +} + +static const int8_t eob_to_pos_small[33] = { + 0, 1, 2, // 0-2 + 3, 3, // 3-4 + 4, 4, 4, 4, // 5-8 + 5, 5, 5, 5, 5, 5, 5, 5, // 9-16 + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6 // 17-32 +}; + +static const int8_t eob_to_pos_large[17] = { + 6, // place holder + 7, // 33-64 + 8, 8, // 65-128 + 9, 9, 9, 9, // 129-256 + 10, 10, 10, 10, 10, 10, 10, 10, // 257-512 + 11 // 513- +}; + +static INLINE int get_eob_pos_token(const int eob, int *const extra) { + int t; + + if (eob < 33) { + t = eob_to_pos_small[eob]; + } else { + const int e = AOMMIN((eob - 1) >> 5, 16); + t = eob_to_pos_large[e]; + } + + *extra = eob - k_eob_group_start[t]; + + return t; +} + +#if CONFIG_ENTROPY_STATS +void av1_update_eob_context(int cdf_idx, int eob, TX_SIZE tx_size, + TX_CLASS tx_class, PLANE_TYPE plane, + FRAME_CONTEXT *ec_ctx, FRAME_COUNTS *counts, + uint8_t allow_update_cdf) { +#else +void av1_update_eob_context(int eob, TX_SIZE tx_size, TX_CLASS tx_class, + PLANE_TYPE plane, FRAME_CONTEXT *ec_ctx, + uint8_t allow_update_cdf) { +#endif + int eob_extra; + const int eob_pt = get_eob_pos_token(eob, &eob_extra); + TX_SIZE txs_ctx = get_txsize_entropy_ctx(tx_size); + + const int eob_multi_size = txsize_log2_minus4[tx_size]; + const int eob_multi_ctx = (tx_class == TX_CLASS_2D) ? 0 : 1; + + switch (eob_multi_size) { + case 0: +#if CONFIG_ENTROPY_STATS + ++counts->eob_multi16[cdf_idx][plane][eob_multi_ctx][eob_pt - 1]; +#endif + if (allow_update_cdf) + update_cdf(ec_ctx->eob_flag_cdf16[plane][eob_multi_ctx], eob_pt - 1, 5); + break; + case 1: +#if CONFIG_ENTROPY_STATS + ++counts->eob_multi32[cdf_idx][plane][eob_multi_ctx][eob_pt - 1]; +#endif + if (allow_update_cdf) + update_cdf(ec_ctx->eob_flag_cdf32[plane][eob_multi_ctx], eob_pt - 1, 6); + break; + case 2: +#if CONFIG_ENTROPY_STATS + ++counts->eob_multi64[cdf_idx][plane][eob_multi_ctx][eob_pt - 1]; +#endif + if (allow_update_cdf) + update_cdf(ec_ctx->eob_flag_cdf64[plane][eob_multi_ctx], eob_pt - 1, 7); + break; + case 3: +#if CONFIG_ENTROPY_STATS + ++counts->eob_multi128[cdf_idx][plane][eob_multi_ctx][eob_pt - 1]; +#endif + if (allow_update_cdf) { + update_cdf(ec_ctx->eob_flag_cdf128[plane][eob_multi_ctx], eob_pt - 1, + 8); + } + break; + case 4: +#if CONFIG_ENTROPY_STATS + ++counts->eob_multi256[cdf_idx][plane][eob_multi_ctx][eob_pt - 1]; +#endif + if (allow_update_cdf) { + update_cdf(ec_ctx->eob_flag_cdf256[plane][eob_multi_ctx], eob_pt - 1, + 9); + } + break; + case 5: +#if CONFIG_ENTROPY_STATS + ++counts->eob_multi512[cdf_idx][plane][eob_multi_ctx][eob_pt - 1]; +#endif + if (allow_update_cdf) { + update_cdf(ec_ctx->eob_flag_cdf512[plane][eob_multi_ctx], eob_pt - 1, + 10); + } + break; + case 6: + default: +#if CONFIG_ENTROPY_STATS + ++counts->eob_multi1024[cdf_idx][plane][eob_multi_ctx][eob_pt - 1]; +#endif + if (allow_update_cdf) { + update_cdf(ec_ctx->eob_flag_cdf1024[plane][eob_multi_ctx], eob_pt - 1, + 11); + } + break; + } + + if (k_eob_offset_bits[eob_pt] > 0) { + int eob_ctx = eob_pt - 3; + int eob_shift = k_eob_offset_bits[eob_pt] - 1; + int bit = (eob_extra & (1 << eob_shift)) ? 1 : 0; +#if CONFIG_ENTROPY_STATS + counts->eob_extra[cdf_idx][txs_ctx][plane][eob_pt][bit]++; +#endif // CONFIG_ENTROPY_STATS + if (allow_update_cdf) + update_cdf(ec_ctx->eob_extra_cdf[txs_ctx][plane][eob_ctx], bit, 2); + } +} + +static int get_eob_cost(int eob, const LV_MAP_EOB_COST *txb_eob_costs, + const LV_MAP_COEFF_COST *txb_costs, TX_CLASS tx_class) { + int eob_extra; + const int eob_pt = get_eob_pos_token(eob, &eob_extra); + int eob_cost = 0; + const int eob_multi_ctx = (tx_class == TX_CLASS_2D) ? 0 : 1; + eob_cost = txb_eob_costs->eob_cost[eob_multi_ctx][eob_pt - 1]; + + if (k_eob_offset_bits[eob_pt] > 0) { + const int eob_ctx = eob_pt - 3; + const int eob_shift = k_eob_offset_bits[eob_pt] - 1; + const int bit = (eob_extra & (1 << eob_shift)) ? 1 : 0; + eob_cost += txb_costs->eob_extra_cost[eob_ctx][bit]; + const int offset_bits = k_eob_offset_bits[eob_pt]; + if (offset_bits > 1) eob_cost += av1_cost_literal(offset_bits - 1); + } + return eob_cost; +} + +static INLINE int get_sign_bit_cost(tran_low_t qc, int coeff_idx, + const int (*dc_sign_cost)[2], + int dc_sign_ctx) { + if (coeff_idx == 0) { + const int sign = (qc < 0) ? 1 : 0; + return dc_sign_cost[dc_sign_ctx][sign]; + } + return av1_cost_literal(1); +} + +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 (abs_qc >= max_level) { + return coeff_lps[COEFF_BASE_RANGE]; // COEFF_BASE_RANGE * cost0; + } else { + return coeff_lps[(abs_qc - min_level)]; // * cost0 + cost1; + } + } + return 0; +} + +static INLINE int get_golomb_cost(int abs_qc) { + if (abs_qc >= 1 + NUM_BASE_LEVELS + COEFF_BASE_RANGE) { + const int r = abs_qc - COEFF_BASE_RANGE - NUM_BASE_LEVELS; + const int length = get_msb(r) + 1; + return av1_cost_literal(2 * length - 1); + } + return 0; +} + +static int get_coeff_cost(const tran_low_t qc, const int scan_idx, + const int is_eob, const TxbInfo *const txb_info, + const LV_MAP_COEFF_COST *const txb_costs, + const int coeff_ctx, const TX_CLASS tx_class) { + const TXB_CTX *const 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 *const scan = txb_info->scan_order->scan; + const int pos = scan[scan_idx]; + + if (is_eob) { + cost += txb_costs->base_eob_cost[coeff_ctx][AOMMIN(abs_qc, 3) - 1]; + } else { + cost += txb_costs->base_cost[coeff_ctx][AOMMIN(abs_qc, 3)]; + } + if (is_nz) { + cost += get_sign_bit_cost(qc, scan_idx, txb_costs->dc_sign_cost, + txb_ctx->dc_sign_ctx); + + if (abs_qc > NUM_BASE_LEVELS) { + const int ctx = + get_br_ctx(txb_info->levels, pos, txb_info->bwl, tx_class); + cost += get_br_cost(abs_qc, ctx, txb_costs->lps_cost[ctx]); + cost += get_golomb_cost(abs_qc); + } + } + return cost; +} + +static INLINE int get_nz_map_ctx(const uint8_t *const levels, + const int coeff_idx, const int bwl, + const int height, const int scan_idx, + const int is_eob, const TX_SIZE tx_size, + const TX_CLASS tx_class) { + if (is_eob) { + if (scan_idx == 0) return 0; + if (scan_idx <= (height << bwl) / 8) return 1; + if (scan_idx <= (height << bwl) / 4) return 2; + return 3; + } + const int stats = + get_nz_mag(levels + get_padded_idx(coeff_idx, bwl), bwl, tx_class); + return get_nz_map_ctx_from_stats(stats, coeff_idx, bwl, tx_size, tx_class); +} + +static void get_dist_cost_stats(LevelDownStats *const stats, const int scan_idx, + const int is_eob, + const LV_MAP_COEFF_COST *const txb_costs, + const TxbInfo *const txb_info, + const TX_CLASS tx_class) { + const int16_t *const scan = txb_info->scan_order->scan; + const int coeff_idx = scan[scan_idx]; + const tran_low_t qc = txb_info->qcoeff[coeff_idx]; + const uint8_t *const levels = txb_info->levels; + stats->new_eob = -1; + stats->update = 0; + stats->rd_low = 0; + stats->rd = 0; + stats->nz_rd = 0; + stats->dist_low = 0; + stats->rate_low = 0; + stats->low_qc = 0; + + const tran_low_t tqc = txb_info->tcoeff[coeff_idx]; + const int dqv = txb_info->dequant[coeff_idx != 0]; + const int coeff_ctx = + get_nz_map_ctx(levels, coeff_idx, txb_info->bwl, txb_info->height, + scan_idx, is_eob, txb_info->tx_size, tx_class); + const int qc_cost = get_coeff_cost(qc, scan_idx, is_eob, txb_info, txb_costs, + coeff_ctx, tx_class); + assert(qc != 0); + const tran_low_t dqc = qcoeff_to_dqcoeff(qc, coeff_idx, dqv, txb_info->shift, + txb_info->iqmatrix); + const int64_t dqc_dist = get_coeff_dist(tqc, dqc, txb_info->shift); + + // distortion difference when coefficient is quantized to 0 + const tran_low_t dqc0 = + qcoeff_to_dqcoeff(0, coeff_idx, dqv, txb_info->shift, txb_info->iqmatrix); + + stats->dist0 = get_coeff_dist(tqc, dqc0, txb_info->shift); + stats->dist = dqc_dist - stats->dist0; + stats->rate = qc_cost; + + stats->rd = RDCOST(txb_info->rdmult, stats->rate, stats->dist); + + stats->low_qc = get_lower_coeff(qc); + + if (is_eob && stats->low_qc == 0) { + stats->rd_low = stats->rd; // disable selection of low_qc in this case. + } else { + if (stats->low_qc == 0) { + stats->dist_low = 0; + } else { + stats->low_dqc = qcoeff_to_dqcoeff(stats->low_qc, coeff_idx, dqv, + txb_info->shift, txb_info->iqmatrix); + const int64_t low_dqc_dist = + get_coeff_dist(tqc, stats->low_dqc, txb_info->shift); + stats->dist_low = low_dqc_dist - stats->dist0; + } + const int low_qc_cost = + get_coeff_cost(stats->low_qc, scan_idx, is_eob, txb_info, txb_costs, + coeff_ctx, tx_class); + stats->rate_low = low_qc_cost; + stats->rd_low = RDCOST(txb_info->rdmult, stats->rate_low, stats->dist_low); + } +} + +static void get_dist_cost_stats_with_eob( + LevelDownStats *const stats, const int scan_idx, + const LV_MAP_COEFF_COST *const txb_costs, const TxbInfo *const txb_info, + const TX_CLASS tx_class) { + const int is_eob = 0; + get_dist_cost_stats(stats, scan_idx, is_eob, txb_costs, txb_info, tx_class); + + const int16_t *const scan = txb_info->scan_order->scan; + const int coeff_idx = scan[scan_idx]; + const tran_low_t qc = txb_info->qcoeff[coeff_idx]; + const int coeff_ctx_temp = get_nz_map_ctx( + txb_info->levels, coeff_idx, txb_info->bwl, txb_info->height, scan_idx, 1, + txb_info->tx_size, tx_class); + const int qc_eob_cost = get_coeff_cost(qc, scan_idx, 1, txb_info, txb_costs, + coeff_ctx_temp, tx_class); + int64_t rd_eob = RDCOST(txb_info->rdmult, qc_eob_cost, stats->dist); + if (stats->low_qc != 0) { + const int low_qc_eob_cost = + get_coeff_cost(stats->low_qc, scan_idx, 1, txb_info, txb_costs, + coeff_ctx_temp, tx_class); + int64_t rd_eob_low = + RDCOST(txb_info->rdmult, low_qc_eob_cost, stats->dist_low); + rd_eob = (rd_eob > rd_eob_low) ? rd_eob_low : rd_eob; + } + + stats->nz_rd = AOMMIN(stats->rd_low, stats->rd) - rd_eob; +} + +static INLINE void update_qcoeff(const int coeff_idx, const tran_low_t qc, + const TxbInfo *const txb_info) { + txb_info->qcoeff[coeff_idx] = qc; + txb_info->levels[get_padded_idx(coeff_idx, txb_info->bwl)] = + (uint8_t)clamp(abs(qc), 0, INT8_MAX); +} + +static INLINE void update_coeff(const int coeff_idx, const tran_low_t qc, + const TxbInfo *const txb_info) { + update_qcoeff(coeff_idx, qc, txb_info); + const int dqv = txb_info->dequant[coeff_idx != 0]; + txb_info->dqcoeff[coeff_idx] = qcoeff_to_dqcoeff( + qc, coeff_idx, dqv, txb_info->shift, txb_info->iqmatrix); +} + +void av1_txb_init_levels_c(const tran_low_t *const coeff, const int width, + const int height, uint8_t *const levels) { + const int stride = width + TX_PAD_HOR; + uint8_t *ls = levels; + + memset(levels - TX_PAD_TOP * stride, 0, + sizeof(*levels) * TX_PAD_TOP * stride); + memset(levels + stride * height, 0, + sizeof(*levels) * (TX_PAD_BOTTOM * stride + TX_PAD_END)); + + for (int i = 0; i < height; i++) { + for (int j = 0; j < width; j++) { + *ls++ = (uint8_t)clamp(abs(coeff[i * width + j]), 0, INT8_MAX); + } + for (int j = 0; j < TX_PAD_HOR; j++) { + *ls++ = 0; + } + } +} + +void av1_get_nz_map_contexts_c(const uint8_t *const levels, + const int16_t *const scan, const uint16_t eob, + const TX_SIZE tx_size, const TX_CLASS tx_class, + int8_t *const coeff_contexts) { + const int bwl = get_txb_bwl(tx_size); + const int height = get_txb_high(tx_size); + for (int i = 0; i < eob; ++i) { + const int pos = scan[i]; + coeff_contexts[pos] = get_nz_map_ctx(levels, pos, bwl, height, i, + i == eob - 1, tx_size, tx_class); + } +} + +void av1_write_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd, + aom_writer *w, int blk_row, int blk_col, int plane, + TX_SIZE tx_size, const tran_low_t *tcoeff, + uint16_t eob, TXB_CTX *txb_ctx) { + const TX_SIZE txs_ctx = get_txsize_entropy_ctx(tx_size); + FRAME_CONTEXT *ec_ctx = xd->tile_ctx; + aom_write_symbol(w, eob == 0, + ec_ctx->txb_skip_cdf[txs_ctx][txb_ctx->txb_skip_ctx], 2); + if (eob == 0) return; + 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, + tx_size, cm->reduced_tx_set_used); + const TX_CLASS tx_class = tx_type_to_class[tx_type]; + const SCAN_ORDER *const scan_order = get_scan(tx_size, tx_type); + const int16_t *const scan = scan_order->scan; + int c; + const int bwl = get_txb_bwl(tx_size); + const int width = get_txb_wide(tx_size); + const int height = get_txb_high(tx_size); + + uint8_t levels_buf[TX_PAD_2D]; + uint8_t *const levels = set_levels(levels_buf, width); + DECLARE_ALIGNED(16, int8_t, coeff_contexts[MAX_TX_SQUARE]); + av1_txb_init_levels(tcoeff, width, height, levels); + + av1_write_tx_type(cm, xd, blk_row, blk_col, plane, tx_size, w); + + int eob_extra; + const int eob_pt = get_eob_pos_token(eob, &eob_extra); + const int eob_multi_size = txsize_log2_minus4[tx_size]; + const int eob_multi_ctx = (tx_class == TX_CLASS_2D) ? 0 : 1; + switch (eob_multi_size) { + case 0: + aom_write_symbol(w, eob_pt - 1, + ec_ctx->eob_flag_cdf16[plane_type][eob_multi_ctx], 5); + break; + case 1: + aom_write_symbol(w, eob_pt - 1, + ec_ctx->eob_flag_cdf32[plane_type][eob_multi_ctx], 6); + break; + case 2: + aom_write_symbol(w, eob_pt - 1, + ec_ctx->eob_flag_cdf64[plane_type][eob_multi_ctx], 7); + break; + case 3: + aom_write_symbol(w, eob_pt - 1, + ec_ctx->eob_flag_cdf128[plane_type][eob_multi_ctx], 8); + break; + case 4: + aom_write_symbol(w, eob_pt - 1, + ec_ctx->eob_flag_cdf256[plane_type][eob_multi_ctx], 9); + break; + case 5: + aom_write_symbol(w, eob_pt - 1, + ec_ctx->eob_flag_cdf512[plane_type][eob_multi_ctx], 10); + break; + default: + aom_write_symbol(w, eob_pt - 1, + ec_ctx->eob_flag_cdf1024[plane_type][eob_multi_ctx], 11); + break; + } + + if (k_eob_offset_bits[eob_pt] > 0) { + const int eob_ctx = eob_pt - 3; + int eob_shift = k_eob_offset_bits[eob_pt] - 1; + int bit = (eob_extra & (1 << eob_shift)) ? 1 : 0; + aom_write_symbol(w, bit, + ec_ctx->eob_extra_cdf[txs_ctx][plane_type][eob_ctx], 2); + for (int i = 1; i < k_eob_offset_bits[eob_pt]; i++) { + eob_shift = k_eob_offset_bits[eob_pt] - 1 - i; + bit = (eob_extra & (1 << eob_shift)) ? 1 : 0; + aom_write_bit(w, bit); + } + } + + av1_get_nz_map_contexts(levels, scan, eob, tx_size, tx_class, coeff_contexts); + + for (c = eob - 1; c >= 0; --c) { + const int pos = scan[c]; + const int coeff_ctx = coeff_contexts[pos]; + const tran_low_t v = tcoeff[pos]; + const tran_low_t level = abs(v); + + if (c == eob - 1) { + aom_write_symbol( + w, AOMMIN(level, 3) - 1, + ec_ctx->coeff_base_eob_cdf[txs_ctx][plane_type][coeff_ctx], 3); + } else { + aom_write_symbol(w, AOMMIN(level, 3), + ec_ctx->coeff_base_cdf[txs_ctx][plane_type][coeff_ctx], + 4); + } + if (level > NUM_BASE_LEVELS) { + // level is above 1. + const int base_range = level - 1 - NUM_BASE_LEVELS; + const int br_ctx = get_br_ctx(levels, pos, bwl, tx_class); + for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { + const int k = AOMMIN(base_range - idx, BR_CDF_SIZE - 1); + aom_write_symbol( + w, k, + ec_ctx->coeff_br_cdf[AOMMIN(txs_ctx, TX_32X32)][plane_type][br_ctx], + BR_CDF_SIZE); + if (k < BR_CDF_SIZE - 1) break; + } + } + } + + // Loop to code all signs in the transform block, + // starting with the sign of DC (if applicable) + for (c = 0; c < eob; ++c) { + const tran_low_t v = tcoeff[scan[c]]; + const tran_low_t level = abs(v); + const int sign = (v < 0) ? 1 : 0; + if (level) { + if (c == 0) { + aom_write_symbol( + w, sign, ec_ctx->dc_sign_cdf[plane_type][txb_ctx->dc_sign_ctx], 2); + } else { + aom_write_bit(w, sign); + } + if (level > COEFF_BASE_RANGE + NUM_BASE_LEVELS) + write_golomb(w, level - COEFF_BASE_RANGE - 1 - NUM_BASE_LEVELS); + } + } +} + +typedef struct encode_txb_args { + const AV1_COMMON *cm; + MACROBLOCK *x; + aom_writer *w; +} ENCODE_TXB_ARGS; + +static void write_coeffs_txb_wrap(const AV1_COMMON *cm, MACROBLOCK *x, + aom_writer *w, int plane, int block, + int blk_row, int blk_col, TX_SIZE tx_size) { + MACROBLOCKD *xd = &x->e_mbd; + 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, blk_row, blk_col, plane, tx_size, tcoeff, eob, + &txb_ctx); +} + +void av1_write_coeffs_mb(const AV1_COMMON *const cm, MACROBLOCK *x, int mi_row, + int mi_col, aom_writer *w, BLOCK_SIZE bsize) { + MACROBLOCKD *xd = &x->e_mbd; + const int num_planes = av1_num_planes(cm); + int block[MAX_MB_PLANE] = { 0 }; + int row, col; + assert(bsize == get_plane_block_size(bsize, xd->plane[0].subsampling_x, + xd->plane[0].subsampling_y)); + const int max_blocks_wide = max_block_wide(xd, bsize, 0); + const int max_blocks_high = max_block_high(xd, bsize, 0); + const BLOCK_SIZE max_unit_bsize = BLOCK_64X64; + int mu_blocks_wide = block_size_wide[max_unit_bsize] >> tx_size_wide_log2[0]; + int mu_blocks_high = block_size_high[max_unit_bsize] >> tx_size_high_log2[0]; + mu_blocks_wide = AOMMIN(max_blocks_wide, mu_blocks_wide); + mu_blocks_high = AOMMIN(max_blocks_high, mu_blocks_high); + + for (row = 0; row < max_blocks_high; row += mu_blocks_high) { + for (col = 0; col < max_blocks_wide; col += mu_blocks_wide) { + for (int plane = 0; plane < num_planes; ++plane) { + const struct macroblockd_plane *const pd = &xd->plane[plane]; + if (!is_chroma_reference(mi_row, mi_col, bsize, pd->subsampling_x, + pd->subsampling_y)) + continue; + const TX_SIZE tx_size = av1_get_tx_size(plane, xd); + const int stepr = tx_size_high_unit[tx_size]; + const int stepc = tx_size_wide_unit[tx_size]; + const int step = stepr * stepc; + + const int unit_height = ROUND_POWER_OF_TWO( + AOMMIN(mu_blocks_high + row, max_blocks_high), pd->subsampling_y); + const int unit_width = ROUND_POWER_OF_TWO( + AOMMIN(mu_blocks_wide + col, max_blocks_wide), pd->subsampling_x); + for (int blk_row = row >> pd->subsampling_y; blk_row < unit_height; + blk_row += stepr) { + for (int blk_col = col >> pd->subsampling_x; blk_col < unit_width; + blk_col += stepc) { + write_coeffs_txb_wrap(cm, x, w, plane, block[plane], blk_row, + blk_col, tx_size); + block[plane] += step; + } + } + } + } + } +} + +// TODO(angiebird): use this function whenever it's possible +static int get_tx_type_cost(const AV1_COMMON *cm, const MACROBLOCK *x, + const MACROBLOCKD *xd, int plane, TX_SIZE tx_size, + TX_TYPE tx_type) { + if (plane > 0) return 0; + + const TX_SIZE square_tx_size = txsize_sqr_map[tx_size]; + + const MB_MODE_INFO *mbmi = xd->mi[0]; + const int is_inter = is_inter_block(mbmi); + if (get_ext_tx_types(tx_size, is_inter, cm->reduced_tx_set_used) > 1 && + !xd->lossless[xd->mi[0]->segment_id]) { + const int ext_tx_set = + get_ext_tx_set(tx_size, is_inter, cm->reduced_tx_set_used); + if (is_inter) { + if (ext_tx_set > 0) + return x->inter_tx_type_costs[ext_tx_set][square_tx_size][tx_type]; + } else { + if (ext_tx_set > 0) { + PREDICTION_MODE intra_dir; + if (mbmi->filter_intra_mode_info.use_filter_intra) + intra_dir = fimode_to_intradir[mbmi->filter_intra_mode_info + .filter_intra_mode]; + else + intra_dir = mbmi->mode; + return x->intra_tx_type_costs[ext_tx_set][square_tx_size][intra_dir] + [tx_type]; + } + } + } + return 0; +} + +static AOM_FORCE_INLINE int warehouse_efficients_txb( + const AV1_COMMON *const cm, const MACROBLOCK *x, const int plane, + const int block, const TX_SIZE tx_size, const TXB_CTX *const txb_ctx, + const struct macroblock_plane *p, const int eob, + const PLANE_TYPE plane_type, const LV_MAP_COEFF_COST *const coeff_costs, + const MACROBLOCKD *const xd, const TX_TYPE tx_type, + const TX_CLASS tx_class) { + const tran_low_t *const qcoeff = BLOCK_OFFSET(p->qcoeff, block); + const int txb_skip_ctx = txb_ctx->txb_skip_ctx; + const int bwl = get_txb_bwl(tx_size); + const int width = get_txb_wide(tx_size); + const int height = get_txb_high(tx_size); + const SCAN_ORDER *const scan_order = get_scan(tx_size, tx_type); + const int16_t *const scan = scan_order->scan; + uint8_t levels_buf[TX_PAD_2D]; + uint8_t *const levels = set_levels(levels_buf, width); + DECLARE_ALIGNED(16, int8_t, coeff_contexts[MAX_TX_SQUARE]); + const int eob_multi_size = txsize_log2_minus4[tx_size]; + const LV_MAP_EOB_COST *const eob_costs = + &x->eob_costs[eob_multi_size][plane_type]; + int cost = coeff_costs->txb_skip_cost[txb_skip_ctx][0]; + + av1_txb_init_levels(qcoeff, width, height, levels); + + cost += get_tx_type_cost(cm, x, xd, plane, tx_size, tx_type); + + cost += get_eob_cost(eob, eob_costs, coeff_costs, tx_class); + + av1_get_nz_map_contexts(levels, scan, eob, tx_size, tx_class, coeff_contexts); + + const int(*lps_cost)[COEFF_BASE_RANGE + 1] = coeff_costs->lps_cost; + int c = eob - 1; + { + const int pos = scan[c]; + const tran_low_t v = qcoeff[pos]; + const int sign = v >> 31; + const int level = (v ^ sign) - sign; + const int coeff_ctx = coeff_contexts[pos]; + cost += coeff_costs->base_eob_cost[coeff_ctx][AOMMIN(level, 3) - 1]; + + if (v) { + // sign bit cost + if (level > NUM_BASE_LEVELS) { + const int ctx = get_br_ctx(levels, pos, bwl, tx_class); + const int base_range = + AOMMIN(level - 1 - NUM_BASE_LEVELS, COEFF_BASE_RANGE); + cost += lps_cost[ctx][base_range]; + cost += get_golomb_cost(level); + } + if (c) { + cost += av1_cost_literal(1); + } else { + const int sign01 = (sign ^ sign) - sign; + const int dc_sign_ctx = txb_ctx->dc_sign_ctx; + cost += coeff_costs->dc_sign_cost[dc_sign_ctx][sign01]; + return cost; + } + } + } + const int(*base_cost)[4] = coeff_costs->base_cost; + for (c = eob - 2; c >= 1; --c) { + const int pos = scan[c]; + const int coeff_ctx = coeff_contexts[pos]; + const tran_low_t v = qcoeff[pos]; + const int level = abs(v); + const int cost0 = base_cost[coeff_ctx][AOMMIN(level, 3)]; + if (v) { + // sign bit cost + cost += av1_cost_literal(1); + if (level > NUM_BASE_LEVELS) { + const int ctx = get_br_ctx(levels, pos, bwl, tx_class); + const int base_range = + AOMMIN(level - 1 - NUM_BASE_LEVELS, COEFF_BASE_RANGE); + cost += lps_cost[ctx][base_range]; + cost += get_golomb_cost(level); + } + } + cost += cost0; + } + if (c == 0) { + const int pos = scan[c]; + const tran_low_t v = qcoeff[pos]; + const int coeff_ctx = coeff_contexts[pos]; + const int sign = v >> 31; + const int level = (v ^ sign) - sign; + cost += base_cost[coeff_ctx][AOMMIN(level, 3)]; + + if (v) { + // sign bit cost + const int sign01 = (sign ^ sign) - sign; + const int dc_sign_ctx = txb_ctx->dc_sign_ctx; + cost += coeff_costs->dc_sign_cost[dc_sign_ctx][sign01]; + if (level > NUM_BASE_LEVELS) { + const int ctx = get_br_ctx(levels, pos, bwl, tx_class); + const int base_range = + AOMMIN(level - 1 - NUM_BASE_LEVELS, COEFF_BASE_RANGE); + cost += lps_cost[ctx][base_range]; + cost += get_golomb_cost(level); + } + } + } + return cost; +} + +int av1_cost_coeffs_txb(const AV1_COMMON *const cm, const MACROBLOCK *x, + const int plane, const int block, const TX_SIZE tx_size, + const TX_TYPE tx_type, const TXB_CTX *const txb_ctx) { + const struct macroblock_plane *p = &x->plane[plane]; + const int eob = p->eobs[block]; + const TX_SIZE txs_ctx = get_txsize_entropy_ctx(tx_size); + const PLANE_TYPE plane_type = get_plane_type(plane); + const LV_MAP_COEFF_COST *const coeff_costs = + &x->coeff_costs[txs_ctx][plane_type]; + if (eob == 0) { + return coeff_costs->txb_skip_cost[txb_ctx->txb_skip_ctx][1]; + } + + const MACROBLOCKD *const xd = &x->e_mbd; + const TX_CLASS tx_class = tx_type_to_class[tx_type]; + +#define WAREHOUSE_EFFICIENTS_TXB_CASE(tx_class_literal) \ + case tx_class_literal: \ + return warehouse_efficients_txb(cm, x, plane, block, tx_size, txb_ctx, p, \ + eob, plane_type, coeff_costs, xd, tx_type, \ + tx_class_literal); + switch (tx_class) { + WAREHOUSE_EFFICIENTS_TXB_CASE(TX_CLASS_2D); + WAREHOUSE_EFFICIENTS_TXB_CASE(TX_CLASS_HORIZ); + WAREHOUSE_EFFICIENTS_TXB_CASE(TX_CLASS_VERT); +#undef WAREHOUSE_EFFICIENTS_TXB_CASE + default: assert(false); return 0; + } +} + +static int optimize_txb(TxbInfo *txb_info, const LV_MAP_COEFF_COST *txb_costs, + const LV_MAP_EOB_COST *txb_eob_costs, int *rate_cost) { + int update = 0; + if (txb_info->eob == 0) return update; + const int16_t *const scan = txb_info->scan_order->scan; + // forward optimize the nz_map` + const int init_eob = txb_info->eob; + const TX_CLASS tx_class = tx_type_to_class[txb_info->tx_type]; + const int eob_cost = + get_eob_cost(init_eob, txb_eob_costs, txb_costs, tx_class); + + // backward optimize the level-k map + int accu_rate = eob_cost; + int64_t accu_dist = 0; + int64_t prev_eob_rd_cost = INT64_MAX; + int64_t cur_eob_rd_cost = 0; + + { + const int si = init_eob - 1; + const int coeff_idx = scan[si]; + LevelDownStats stats; + get_dist_cost_stats(&stats, si, si == init_eob - 1, txb_costs, txb_info, + tx_class); + if ((stats.rd_low < stats.rd) && (stats.low_qc != 0)) { + update = 1; + update_coeff(coeff_idx, stats.low_qc, txb_info); + accu_rate += stats.rate_low; + accu_dist += stats.dist_low; + } else { + accu_rate += stats.rate; + accu_dist += stats.dist; + } + } + + int si = init_eob - 2; + int8_t has_nz_tail = 0; + // eob is not fixed + for (; si >= 0 && has_nz_tail < 2; --si) { + assert(si != init_eob - 1); + const int coeff_idx = scan[si]; + tran_low_t qc = txb_info->qcoeff[coeff_idx]; + + if (qc == 0) { + const int coeff_ctx = + get_lower_levels_ctx(txb_info->levels, coeff_idx, txb_info->bwl, + txb_info->tx_size, tx_class); + accu_rate += txb_costs->base_cost[coeff_ctx][0]; + } else { + LevelDownStats stats; + get_dist_cost_stats_with_eob(&stats, si, txb_costs, txb_info, tx_class); + // check if it is better to make this the last significant coefficient + int cur_eob_rate = + get_eob_cost(si + 1, txb_eob_costs, txb_costs, tx_class); + cur_eob_rd_cost = RDCOST(txb_info->rdmult, cur_eob_rate, 0); + prev_eob_rd_cost = + RDCOST(txb_info->rdmult, accu_rate, accu_dist) + stats.nz_rd; + if (cur_eob_rd_cost <= prev_eob_rd_cost) { + update = 1; + for (int j = si + 1; j < txb_info->eob; j++) { + const int coeff_pos_j = scan[j]; + update_coeff(coeff_pos_j, 0, txb_info); + } + txb_info->eob = si + 1; + + // rerun cost calculation due to change of eob + accu_rate = cur_eob_rate; + accu_dist = 0; + get_dist_cost_stats(&stats, si, 1, txb_costs, txb_info, tx_class); + if ((stats.rd_low < stats.rd) && (stats.low_qc != 0)) { + update = 1; + update_coeff(coeff_idx, stats.low_qc, txb_info); + accu_rate += stats.rate_low; + accu_dist += stats.dist_low; + } else { + accu_rate += stats.rate; + accu_dist += stats.dist; + } + + // reset non zero tail when new eob is found + has_nz_tail = 0; + } else { + int bUpdCoeff = 0; + if (stats.rd_low < stats.rd) { + if ((si < txb_info->eob - 1)) { + bUpdCoeff = 1; + update = 1; + } + } else { + ++has_nz_tail; + } + + if (bUpdCoeff) { + update_coeff(coeff_idx, stats.low_qc, txb_info); + accu_rate += stats.rate_low; + accu_dist += stats.dist_low; + } else { + accu_rate += stats.rate; + accu_dist += stats.dist; + } + } + } + } // for (si) + + // eob is fixed + for (; si >= 0; --si) { + assert(si != init_eob - 1); + const int coeff_idx = scan[si]; + tran_low_t qc = txb_info->qcoeff[coeff_idx]; + + if (qc == 0) { + const int coeff_ctx = + get_lower_levels_ctx(txb_info->levels, coeff_idx, txb_info->bwl, + txb_info->tx_size, tx_class); + accu_rate += txb_costs->base_cost[coeff_ctx][0]; + } else { + LevelDownStats stats; + get_dist_cost_stats(&stats, si, 0, txb_costs, txb_info, tx_class); + + int bUpdCoeff = 0; + if (stats.rd_low < stats.rd) { + if ((si < txb_info->eob - 1)) { + bUpdCoeff = 1; + update = 1; + } + } + if (bUpdCoeff) { + update_coeff(coeff_idx, stats.low_qc, txb_info); + accu_rate += stats.rate_low; + accu_dist += stats.dist_low; + } else { + accu_rate += stats.rate; + accu_dist += stats.dist; + } + } + } // for (si) + + int non_zero_blk_rate = + txb_costs->txb_skip_cost[txb_info->txb_ctx->txb_skip_ctx][0]; + prev_eob_rd_cost = + RDCOST(txb_info->rdmult, accu_rate + non_zero_blk_rate, accu_dist); + + int zero_blk_rate = + txb_costs->txb_skip_cost[txb_info->txb_ctx->txb_skip_ctx][1]; + int64_t zero_blk_rd_cost = RDCOST(txb_info->rdmult, zero_blk_rate, 0); + if (zero_blk_rd_cost <= prev_eob_rd_cost) { + update = 1; + for (int j = 0; j < txb_info->eob; j++) { + const int coeff_pos_j = scan[j]; + update_coeff(coeff_pos_j, 0, txb_info); + } + txb_info->eob = 0; + } + + // record total rate cost + *rate_cost = zero_blk_rd_cost <= prev_eob_rd_cost + ? zero_blk_rate + : accu_rate + non_zero_blk_rate; + + if (txb_info->eob > 0) { + *rate_cost += txb_info->tx_type_cost; + } + + return update; +} + +// These numbers are empirically obtained. +static const int plane_rd_mult[REF_TYPES][PLANE_TYPES] = { + { 17, 13 }, + { 16, 10 }, +}; + +void hbt_init() { + hbt_hash_table = + aom_malloc(sizeof(OptTxbQcoeff) * HBT_TABLE_SIZE * HBT_ARRAY_LENGTH); + memset(hbt_hash_table, 0, + sizeof(OptTxbQcoeff) * HBT_TABLE_SIZE * HBT_ARRAY_LENGTH); + av1_crc32c_calculator_init(&crc_calculator); // 31 bit: qc & ctx + + hbt_needs_init = 0; +} + +void hbt_destroy() { aom_free(hbt_hash_table); } + +int hbt_hash_miss(uint32_t hbt_ctx_hash, uint32_t hbt_qc_hash, + TxbInfo *txb_info, const LV_MAP_COEFF_COST *txb_costs, + const LV_MAP_EOB_COST *txb_eob_costs, + const struct macroblock_plane *p, int block, int fast_mode, + int *rate_cost) { + (void)fast_mode; + const int16_t *scan = txb_info->scan_order->scan; + int prev_eob = txb_info->eob; + assert(HBT_EOB <= 16); // Lengthen array if allowing longer eob. + int32_t prev_coeff[16]; + for (int i = 0; i < prev_eob; i++) { + prev_coeff[i] = txb_info->qcoeff[scan[i]]; + } + for (int i = prev_eob; i < HBT_EOB; i++) { + prev_coeff[i] = 0; // For compiler piece of mind. + } + + av1_txb_init_levels(txb_info->qcoeff, txb_info->width, txb_info->height, + txb_info->levels); + + const int update = + optimize_txb(txb_info, txb_costs, txb_eob_costs, rate_cost); + + // Overwrite old entry + uint16_t hbt_table_index = hbt_ctx_hash % HBT_TABLE_SIZE; + uint16_t hbt_array_index = hbt_qc_hash % HBT_ARRAY_LENGTH; + hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index] + .rate_cost = *rate_cost; + hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index].init = 1; + hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index] + .hbt_qc_hash = hbt_qc_hash; + hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index] + .hbt_ctx_hash = hbt_ctx_hash; + assert(prev_eob >= txb_info->eob); // eob can't get longer + for (int i = 0; i < txb_info->eob; i++) { + // Record how coeff changed. Convention: towards zero is negative. + if (txb_info->qcoeff[scan[i]] > 0) + hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index] + .deltas[i] = txb_info->qcoeff[scan[i]] - prev_coeff[i]; + else + hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index] + .deltas[i] = prev_coeff[i] - txb_info->qcoeff[scan[i]]; + } + for (int i = txb_info->eob; i < prev_eob; i++) { + // If eob got shorter, record that all after it changed to zero. + if (prev_coeff[i] > 0) + hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index] + .deltas[i] = -prev_coeff[i]; + else + hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index] + .deltas[i] = prev_coeff[i]; + } + for (int i = prev_eob; i < HBT_EOB; i++) { + // Record 'no change' after optimized coefficients run out. + hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index] + .deltas[i] = 0; + } + + if (update) { + p->eobs[block] = txb_info->eob; + p->txb_entropy_ctx[block] = av1_get_txb_entropy_context( + txb_info->qcoeff, txb_info->scan_order, txb_info->eob); + } + return txb_info->eob; +} + +int hbt_hash_hit(uint32_t hbt_table_index, int hbt_array_index, + TxbInfo *txb_info, const struct macroblock_plane *p, int block, + int *rate_cost) { + const int16_t *scan = txb_info->scan_order->scan; + int new_eob = 0; + int update = 0; + + for (int i = 0; i < txb_info->eob; i++) { + // Delta convention is negatives go towards zero, so only apply those ones. + if (hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index] + .deltas[i] < 0) { + if (txb_info->qcoeff[scan[i]] > 0) + txb_info->qcoeff[scan[i]] += + hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index] + .deltas[i]; + else + txb_info->qcoeff[scan[i]] -= + hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index] + .deltas[i]; + + update = 1; + update_coeff(scan[i], txb_info->qcoeff[scan[i]], txb_info); + } + if (txb_info->qcoeff[scan[i]]) new_eob = i + 1; + } + + // Rate_cost can be calculated here instead (av1_cost_coeffs_txb), but + // it is expensive and gives little benefit as long as qc_hash is high bit + *rate_cost = + hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index] + .rate_cost; + + if (update) { + txb_info->eob = new_eob; + p->eobs[block] = txb_info->eob; + p->txb_entropy_ctx[block] = av1_get_txb_entropy_context( + txb_info->qcoeff, txb_info->scan_order, txb_info->eob); + } + + return txb_info->eob; +} + +int hbt_search_match(uint32_t hbt_ctx_hash, uint32_t hbt_qc_hash, + TxbInfo *txb_info, const LV_MAP_COEFF_COST *txb_costs, + const LV_MAP_EOB_COST *txb_eob_costs, + const struct macroblock_plane *p, int block, int fast_mode, + int *rate_cost) { + // Check for qcoeff match + int hbt_array_index = hbt_qc_hash % HBT_ARRAY_LENGTH; + int hbt_table_index = hbt_ctx_hash % HBT_TABLE_SIZE; + + if (hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index] + .hbt_qc_hash == hbt_qc_hash && + hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index] + .hbt_ctx_hash == hbt_ctx_hash && + hbt_hash_table[hbt_table_index * HBT_ARRAY_LENGTH + hbt_array_index] + .init) { + return hbt_hash_hit(hbt_table_index, hbt_array_index, txb_info, p, block, + rate_cost); + } else { + return hbt_hash_miss(hbt_ctx_hash, hbt_qc_hash, txb_info, txb_costs, + txb_eob_costs, p, block, fast_mode, rate_cost); + } +} + +int hbt_create_hashes(TxbInfo *txb_info, const LV_MAP_COEFF_COST *txb_costs, + const LV_MAP_EOB_COST *txb_eob_costs, + const struct macroblock_plane *p, int block, + int fast_mode, int *rate_cost) { + // Initialize hash table if needed. + if (hbt_needs_init) { + hbt_init(); + } + + //// Hash creation + uint8_t txb_hash_data[256]; // Asserts below to ensure enough space. + const int16_t *scan = txb_info->scan_order->scan; + uint8_t chunk = 0; + int hash_data_index = 0; + + // Make qc_hash. + int packing_index = 0; // needed for packing. + for (int i = 0; i < txb_info->eob; i++) { + tran_low_t prechunk = txb_info->qcoeff[scan[i]]; + + // Softening: Improves speed. Aligns with signed deltas. + if (prechunk < 0) prechunk *= -1; + + // Early kick out: Don't apply feature if there are large coeffs: + // If this kickout value is removed or raised beyond int8_t, + // widen deltas type in OptTxbQcoeff struct. + assert((int8_t)HBT_KICKOUT == HBT_KICKOUT); // If not, widen types. + if (prechunk > HBT_KICKOUT) { + av1_txb_init_levels(txb_info->qcoeff, txb_info->width, txb_info->height, + txb_info->levels); + + const int update = + optimize_txb(txb_info, txb_costs, txb_eob_costs, rate_cost); + + if (update) { + p->eobs[block] = txb_info->eob; + p->txb_entropy_ctx[block] = av1_get_txb_entropy_context( + txb_info->qcoeff, txb_info->scan_order, txb_info->eob); + } + return txb_info->eob; + } + + // Since coeffs are 0 to 3, only 2 bits are needed: pack into bytes + if (packing_index == 0) txb_hash_data[hash_data_index] = 0; + chunk = prechunk << packing_index; + packing_index += 2; + txb_hash_data[hash_data_index] |= chunk; + + // Full byte: + if (packing_index == 8) { + packing_index = 0; + hash_data_index++; + } + } + // Needed when packing_index != 0, to include final byte. + hash_data_index++; + assert(hash_data_index <= 64); + // 31 bit qc_hash: index to array + uint32_t hbt_qc_hash = + av1_get_crc32c_value(&crc_calculator, txb_hash_data, hash_data_index); + + // Make ctx_hash. + hash_data_index = 0; + tran_low_t prechunk; + + for (int i = 0; i < txb_info->eob; i++) { + // Save as magnitudes towards or away from zero. + if (txb_info->tcoeff[scan[i]] >= 0) + prechunk = txb_info->tcoeff[scan[i]] - txb_info->dqcoeff[scan[i]]; + else + prechunk = txb_info->dqcoeff[scan[i]] - txb_info->tcoeff[scan[i]]; + + chunk = prechunk & 0xff; + txb_hash_data[hash_data_index++] = chunk; + } + + // Extra ctx data: + // Include dequants. + txb_hash_data[hash_data_index++] = txb_info->dequant[0] & 0xff; + txb_hash_data[hash_data_index++] = txb_info->dequant[1] & 0xff; + chunk = txb_info->txb_ctx->txb_skip_ctx & 0xff; + txb_hash_data[hash_data_index++] = chunk; + chunk = txb_info->txb_ctx->dc_sign_ctx & 0xff; + txb_hash_data[hash_data_index++] = chunk; + // eob + chunk = txb_info->eob & 0xff; + txb_hash_data[hash_data_index++] = chunk; + // rdmult (int64) + chunk = txb_info->rdmult & 0xff; + txb_hash_data[hash_data_index++] = chunk; + // tx_type + chunk = txb_info->tx_type & 0xff; + txb_hash_data[hash_data_index++] = chunk; + // base_eob_cost + for (int i = 1; i < 3; i++) { // i = 0 are softened away + for (int j = 0; j < SIG_COEF_CONTEXTS_EOB; j++) { + chunk = (txb_costs->base_eob_cost[j][i] & 0xff00) >> 8; + txb_hash_data[hash_data_index++] = chunk; + } + } + // eob_cost + for (int i = 0; i < 11; i++) { + for (int j = 0; j < 2; j++) { + chunk = (txb_eob_costs->eob_cost[j][i] & 0xff00) >> 8; + txb_hash_data[hash_data_index++] = chunk; + } + } + // dc_sign_cost + for (int i = 0; i < 2; i++) { + for (int j = 0; j < DC_SIGN_CONTEXTS; j++) { + chunk = (txb_costs->dc_sign_cost[j][i] & 0xff00) >> 8; + txb_hash_data[hash_data_index++] = chunk; + } + } + + assert(hash_data_index <= 256); + // 31 bit ctx_hash: used to index table + uint32_t hbt_ctx_hash = + av1_get_crc32c_value(&crc_calculator, txb_hash_data, hash_data_index); + //// End hash creation + + return hbt_search_match(hbt_ctx_hash, hbt_qc_hash, txb_info, txb_costs, + txb_eob_costs, p, block, fast_mode, rate_cost); +} + +static AOM_FORCE_INLINE int get_coeff_cost_simple( + int ci, tran_low_t abs_qc, int coeff_ctx, + const LV_MAP_COEFF_COST *txb_costs, int bwl, TX_CLASS tx_class, + const uint8_t *levels) { + // this simple version assumes the coeff's scan_idx is not DC (scan_idx != 0) + // and not the last (scan_idx != eob - 1) + assert(ci > 0); + int cost = txb_costs->base_cost[coeff_ctx][AOMMIN(abs_qc, 3)]; + if (abs_qc) { + cost += av1_cost_literal(1); + if (abs_qc > NUM_BASE_LEVELS) { + const int br_ctx = get_br_ctx(levels, ci, bwl, tx_class); + cost += get_br_cost(abs_qc, br_ctx, txb_costs->lps_cost[br_ctx]); + cost += get_golomb_cost(abs_qc); + } + } + return cost; +} + +static INLINE int get_coeff_cost_general(int is_last, int ci, tran_low_t abs_qc, + int sign, int coeff_ctx, + int dc_sign_ctx, + const LV_MAP_COEFF_COST *txb_costs, + int bwl, TX_CLASS tx_class, + const uint8_t *levels) { + int cost = 0; + if (is_last) { + cost += txb_costs->base_eob_cost[coeff_ctx][AOMMIN(abs_qc, 3) - 1]; + } else { + cost += txb_costs->base_cost[coeff_ctx][AOMMIN(abs_qc, 3)]; + } + if (abs_qc != 0) { + if (ci == 0) { + cost += txb_costs->dc_sign_cost[dc_sign_ctx][sign]; + } else { + cost += av1_cost_literal(1); + } + if (abs_qc > NUM_BASE_LEVELS) { + const int br_ctx = get_br_ctx(levels, ci, bwl, tx_class); + cost += get_br_cost(abs_qc, br_ctx, txb_costs->lps_cost[br_ctx]); + cost += get_golomb_cost(abs_qc); + } + } + return cost; +} + +static INLINE void get_qc_dqc_low(tran_low_t abs_qc, int sign, int dqv, + int shift, tran_low_t *qc_low, + tran_low_t *dqc_low) { + tran_low_t abs_qc_low = abs_qc - 1; + *qc_low = (-sign ^ abs_qc_low) + sign; + assert((sign ? -abs_qc_low : abs_qc_low) == *qc_low); + tran_low_t abs_dqc_low = (abs_qc_low * dqv) >> shift; + *dqc_low = (-sign ^ abs_dqc_low) + sign; + assert((sign ? -abs_dqc_low : abs_dqc_low) == *dqc_low); +} + +static INLINE void update_coeff_general( + int *accu_rate, int64_t *accu_dist, int si, int eob, TX_SIZE tx_size, + TX_CLASS tx_class, int bwl, int height, int64_t rdmult, int shift, + int dc_sign_ctx, const int16_t *dequant, const int16_t *scan, + const LV_MAP_COEFF_COST *txb_costs, const tran_low_t *tcoeff, + tran_low_t *qcoeff, tran_low_t *dqcoeff, uint8_t *levels) { + const int dqv = dequant[si != 0]; + const int ci = scan[si]; + const tran_low_t qc = qcoeff[ci]; + const int is_last = si == (eob - 1); + const int coeff_ctx = get_lower_levels_ctx_general( + is_last, si, bwl, height, levels, ci, tx_size, tx_class); + if (qc == 0) { + *accu_rate += txb_costs->base_cost[coeff_ctx][0]; + } else { + const int sign = (qc < 0) ? 1 : 0; + const tran_low_t abs_qc = abs(qc); + const tran_low_t tqc = tcoeff[ci]; + const tran_low_t dqc = dqcoeff[ci]; + const int64_t dist = get_coeff_dist(tqc, dqc, shift); + const int64_t dist0 = get_coeff_dist(tqc, 0, shift); + const int rate = + get_coeff_cost_general(is_last, ci, abs_qc, sign, coeff_ctx, + dc_sign_ctx, txb_costs, bwl, tx_class, levels); + const int64_t rd = RDCOST(rdmult, rate, dist); + + tran_low_t qc_low, dqc_low; + get_qc_dqc_low(abs_qc, sign, dqv, shift, &qc_low, &dqc_low); + const tran_low_t abs_qc_low = abs_qc - 1; + const int64_t dist_low = get_coeff_dist(tqc, dqc_low, shift); + const int rate_low = + get_coeff_cost_general(is_last, ci, abs_qc_low, sign, coeff_ctx, + dc_sign_ctx, txb_costs, bwl, tx_class, levels); + const int64_t rd_low = RDCOST(rdmult, rate_low, dist_low); + if (rd_low < rd) { + qcoeff[ci] = qc_low; + dqcoeff[ci] = dqc_low; + levels[get_padded_idx(ci, bwl)] = AOMMIN(abs_qc_low, INT8_MAX); + *accu_rate += rate_low; + *accu_dist += dist_low - dist0; + } else { + *accu_rate += rate; + *accu_dist += dist - dist0; + } + } +} + +static AOM_FORCE_INLINE void update_coeff_simple( + int *accu_rate, int si, int eob, TX_SIZE tx_size, TX_CLASS tx_class, + int bwl, int64_t rdmult, int shift, const int16_t *dequant, + const int16_t *scan, const LV_MAP_COEFF_COST *txb_costs, + const tran_low_t *tcoeff, tran_low_t *qcoeff, tran_low_t *dqcoeff, + uint8_t *levels) { + const int dqv = dequant[1]; + (void)eob; + // this simple version assumes the coeff's scan_idx is not DC (scan_idx != 0) + // and not the last (scan_idx != eob - 1) + assert(si != eob - 1); + assert(si > 0); + const int ci = scan[si]; + const tran_low_t qc = qcoeff[ci]; + const int coeff_ctx = + get_lower_levels_ctx(levels, ci, bwl, tx_size, tx_class); + if (qc == 0) { + *accu_rate += txb_costs->base_cost[coeff_ctx][0]; + } else { + const tran_low_t abs_qc = abs(qc); + const tran_low_t tqc = tcoeff[ci]; + const tran_low_t dqc = dqcoeff[ci]; + const int rate = get_coeff_cost_simple(ci, abs_qc, coeff_ctx, txb_costs, + bwl, tx_class, levels); + if (abs(dqc) < abs(tqc)) { + *accu_rate += rate; + return; + } + const int64_t dist = get_coeff_dist(tqc, dqc, shift); + const int64_t rd = RDCOST(rdmult, rate, dist); + + const int sign = (qc < 0) ? 1 : 0; + tran_low_t qc_low, dqc_low; + get_qc_dqc_low(abs_qc, sign, dqv, shift, &qc_low, &dqc_low); + const tran_low_t abs_qc_low = abs_qc - 1; + const int64_t dist_low = get_coeff_dist(tqc, dqc_low, shift); + const int rate_low = get_coeff_cost_simple( + ci, abs_qc_low, coeff_ctx, txb_costs, bwl, tx_class, levels); + const int64_t rd_low = RDCOST(rdmult, rate_low, dist_low); + if (rd_low < rd) { + qcoeff[ci] = qc_low; + dqcoeff[ci] = dqc_low; + levels[get_padded_idx(ci, bwl)] = AOMMIN(abs_qc_low, INT8_MAX); + *accu_rate += rate_low; + } else { + *accu_rate += rate; + } + } +} + +static AOM_FORCE_INLINE void update_coeff_eob( + int *accu_rate, int64_t *accu_dist, int *eob, int *nz_num, int *nz_ci, + int si, TX_SIZE tx_size, TX_CLASS tx_class, int bwl, int height, + int dc_sign_ctx, int64_t rdmult, int shift, const int16_t *dequant, + const int16_t *scan, const LV_MAP_EOB_COST *txb_eob_costs, + const LV_MAP_COEFF_COST *txb_costs, const tran_low_t *tcoeff, + tran_low_t *qcoeff, tran_low_t *dqcoeff, uint8_t *levels, int sharpness) { + const int dqv = dequant[si != 0]; + assert(si != *eob - 1); + const int ci = scan[si]; + const tran_low_t qc = qcoeff[ci]; + const int coeff_ctx = + get_lower_levels_ctx(levels, ci, bwl, tx_size, tx_class); + if (qc == 0) { + *accu_rate += txb_costs->base_cost[coeff_ctx][0]; + } else { + int lower_level = 0; + const tran_low_t abs_qc = abs(qc); + const tran_low_t tqc = tcoeff[ci]; + const tran_low_t dqc = dqcoeff[ci]; + const int sign = (qc < 0) ? 1 : 0; + const int64_t dist0 = get_coeff_dist(tqc, 0, shift); + int64_t dist = get_coeff_dist(tqc, dqc, shift) - dist0; + int rate = + get_coeff_cost_general(0, ci, abs_qc, sign, coeff_ctx, dc_sign_ctx, + txb_costs, bwl, tx_class, levels); + int64_t rd = RDCOST(rdmult, *accu_rate + rate, *accu_dist + dist); + + tran_low_t qc_low, dqc_low; + get_qc_dqc_low(abs_qc, sign, dqv, shift, &qc_low, &dqc_low); + const tran_low_t abs_qc_low = abs_qc - 1; + const int64_t dist_low = get_coeff_dist(tqc, dqc_low, shift) - dist0; + const int rate_low = + get_coeff_cost_general(0, ci, abs_qc_low, sign, coeff_ctx, dc_sign_ctx, + txb_costs, bwl, tx_class, levels); + const int64_t rd_low = + RDCOST(rdmult, *accu_rate + rate_low, *accu_dist + dist_low); + + int lower_level_new_eob = 0; + const int new_eob = si + 1; + uint8_t tmp_levels[3]; + for (int ni = 0; ni < *nz_num; ++ni) { + const int last_ci = nz_ci[ni]; + tmp_levels[ni] = levels[get_padded_idx(last_ci, bwl)]; + levels[get_padded_idx(last_ci, bwl)] = 0; + } + + const int coeff_ctx_new_eob = get_lower_levels_ctx_general( + 1, si, bwl, height, levels, ci, tx_size, tx_class); + const int new_eob_cost = + get_eob_cost(new_eob, txb_eob_costs, txb_costs, tx_class); + int rate_coeff_eob = + new_eob_cost + get_coeff_cost_general(1, ci, abs_qc, sign, + coeff_ctx_new_eob, dc_sign_ctx, + txb_costs, bwl, tx_class, levels); + int64_t dist_new_eob = dist; + int64_t rd_new_eob = RDCOST(rdmult, rate_coeff_eob, dist_new_eob); + + if (abs_qc_low > 0) { + const int rate_coeff_eob_low = + new_eob_cost + + get_coeff_cost_general(1, ci, abs_qc_low, sign, coeff_ctx_new_eob, + dc_sign_ctx, txb_costs, bwl, tx_class, levels); + const int64_t dist_new_eob_low = dist_low; + const int64_t rd_new_eob_low = + RDCOST(rdmult, rate_coeff_eob_low, dist_new_eob_low); + if (rd_new_eob_low < rd_new_eob) { + lower_level_new_eob = 1; + rd_new_eob = rd_new_eob_low; + rate_coeff_eob = rate_coeff_eob_low; + dist_new_eob = dist_new_eob_low; + } + } + + if (rd_low < rd) { + lower_level = 1; + rd = rd_low; + rate = rate_low; + dist = dist_low; + } + + if (sharpness == 0 && rd_new_eob < rd) { + for (int ni = 0; ni < *nz_num; ++ni) { + int last_ci = nz_ci[ni]; + // levels[get_padded_idx(last_ci, bwl)] = 0; + qcoeff[last_ci] = 0; + dqcoeff[last_ci] = 0; + } + *eob = new_eob; + *nz_num = 0; + *accu_rate = rate_coeff_eob; + *accu_dist = dist_new_eob; + lower_level = lower_level_new_eob; + } else { + for (int ni = 0; ni < *nz_num; ++ni) { + const int last_ci = nz_ci[ni]; + levels[get_padded_idx(last_ci, bwl)] = tmp_levels[ni]; + } + *accu_rate += rate; + *accu_dist += dist; + } + + if (lower_level) { + qcoeff[ci] = qc_low; + dqcoeff[ci] = dqc_low; + levels[get_padded_idx(ci, bwl)] = AOMMIN(abs_qc_low, INT8_MAX); + } + if (qcoeff[ci]) { + nz_ci[*nz_num] = ci; + ++*nz_num; + } + } +} + +static INLINE void update_skip(int *accu_rate, int64_t accu_dist, int *eob, + int nz_num, int *nz_ci, int64_t rdmult, + int skip_cost, int non_skip_cost, + tran_low_t *qcoeff, tran_low_t *dqcoeff, + int sharpness) { + const int64_t rd = RDCOST(rdmult, *accu_rate + non_skip_cost, accu_dist); + const int64_t rd_new_eob = RDCOST(rdmult, skip_cost, 0); + if (sharpness == 0 && rd_new_eob < rd) { + for (int i = 0; i < nz_num; ++i) { + const int ci = nz_ci[i]; + qcoeff[ci] = 0; + dqcoeff[ci] = 0; + // no need to set up levels because this is the last step + // levels[get_padded_idx(ci, bwl)] = 0; + } + *accu_rate = 0; + *eob = 0; + } +} + +int av1_optimize_txb_new(const struct AV1_COMP *cpi, MACROBLOCK *x, int plane, + int block, TX_SIZE tx_size, TX_TYPE tx_type, + const TXB_CTX *const txb_ctx, int *rate_cost, + int sharpness) { + const AV1_COMMON *cm = &cpi->common; + MACROBLOCKD *xd = &x->e_mbd; + const PLANE_TYPE plane_type = get_plane_type(plane); + const TX_SIZE txs_ctx = get_txsize_entropy_ctx(tx_size); + const TX_CLASS tx_class = tx_type_to_class[tx_type]; + const MB_MODE_INFO *mbmi = xd->mi[0]; + const struct macroblock_plane *p = &x->plane[plane]; + struct macroblockd_plane *pd = &xd->plane[plane]; + 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 = p->dequant_QTX; + const int bwl = get_txb_bwl(tx_size); + const int width = get_txb_wide(tx_size); + const int height = get_txb_high(tx_size); + assert(width == (1 << bwl)); + const int is_inter = is_inter_block(mbmi); + const SCAN_ORDER *scan_order = get_scan(tx_size, tx_type); + const int16_t *scan = scan_order->scan; + const LV_MAP_COEFF_COST *txb_costs = &x->coeff_costs[txs_ctx][plane_type]; + const int eob_multi_size = txsize_log2_minus4[tx_size]; + const LV_MAP_EOB_COST *txb_eob_costs = + &x->eob_costs[eob_multi_size][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 * (xd->bd - 8))) + + 2) >> + (sharpness + + (cpi->oxcf.aq_mode == VARIANCE_AQ && mbmi->segment_id < 4 + ? 7 - mbmi->segment_id + : 2) + + (cpi->oxcf.aq_mode != VARIANCE_AQ && + cpi->oxcf.deltaq_mode > NO_DELTA_Q && x->sb_energy_level < 0 + ? (3 - x->sb_energy_level) + : 0)); + + uint8_t levels_buf[TX_PAD_2D]; + uint8_t *const levels = set_levels(levels_buf, width); + + av1_txb_init_levels(qcoeff, width, height, levels); + + // TODO(angirbird): check iqmatrix + + const int non_skip_cost = txb_costs->txb_skip_cost[txb_ctx->txb_skip_ctx][0]; + const int skip_cost = txb_costs->txb_skip_cost[txb_ctx->txb_skip_ctx][1]; + int eob = p->eobs[block]; + const int eob_cost = get_eob_cost(eob, txb_eob_costs, txb_costs, tx_class); + int accu_rate = eob_cost; + int64_t accu_dist = 0; + int si = eob - 1; + const int ci = scan[si]; + const tran_low_t qc = qcoeff[ci]; + const tran_low_t abs_qc = abs(qc); + const int sign = qc < 0; + const int max_nz_num = 2; + int nz_num = 1; + int nz_ci[3] = { ci, 0, 0 }; + if (abs_qc >= 2) { + update_coeff_general(&accu_rate, &accu_dist, si, eob, tx_size, tx_class, + bwl, height, rdmult, shift, txb_ctx->dc_sign_ctx, + dequant, scan, txb_costs, tcoeff, qcoeff, dqcoeff, + levels); + --si; + } else { + assert(abs_qc == 1); + const int coeff_ctx = get_lower_levels_ctx_general( + 1, si, bwl, height, levels, ci, tx_size, tx_class); + accu_rate += get_coeff_cost_general(1, ci, abs_qc, sign, coeff_ctx, + txb_ctx->dc_sign_ctx, txb_costs, bwl, + tx_class, levels); + const tran_low_t tqc = tcoeff[ci]; + const tran_low_t dqc = dqcoeff[ci]; + const int64_t dist = get_coeff_dist(tqc, dqc, shift); + const int64_t dist0 = get_coeff_dist(tqc, 0, shift); + accu_dist += dist - dist0; + --si; + } + +#define UPDATE_COEFF_EOB_CASE(tx_class_literal) \ + case tx_class_literal: \ + for (; si >= 0 && nz_num <= max_nz_num; --si) { \ + update_coeff_eob(&accu_rate, &accu_dist, &eob, &nz_num, nz_ci, si, \ + tx_size, tx_class_literal, bwl, height, \ + txb_ctx->dc_sign_ctx, rdmult, shift, dequant, scan, \ + txb_eob_costs, txb_costs, tcoeff, qcoeff, dqcoeff, \ + levels, sharpness); \ + } \ + break; + switch (tx_class) { + UPDATE_COEFF_EOB_CASE(TX_CLASS_2D); + UPDATE_COEFF_EOB_CASE(TX_CLASS_HORIZ); + UPDATE_COEFF_EOB_CASE(TX_CLASS_VERT); +#undef UPDATE_COEFF_EOB_CASE + default: assert(false); + } + + if (si == -1 && nz_num <= max_nz_num) { + update_skip(&accu_rate, accu_dist, &eob, nz_num, nz_ci, rdmult, skip_cost, + non_skip_cost, qcoeff, dqcoeff, sharpness); + } + +#define UPDATE_COEFF_SIMPLE_CASE(tx_class_literal) \ + case tx_class_literal: \ + for (; si >= 1; --si) { \ + update_coeff_simple(&accu_rate, si, eob, tx_size, tx_class_literal, bwl, \ + rdmult, shift, dequant, scan, txb_costs, tcoeff, \ + qcoeff, dqcoeff, levels); \ + } \ + break; + switch (tx_class) { + UPDATE_COEFF_SIMPLE_CASE(TX_CLASS_2D); + UPDATE_COEFF_SIMPLE_CASE(TX_CLASS_HORIZ); + UPDATE_COEFF_SIMPLE_CASE(TX_CLASS_VERT); +#undef UPDATE_COEFF_SIMPLE_CASE + default: assert(false); + } + + // DC position + if (si == 0) { + // no need to update accu_dist because it's not used after this point + int64_t dummy_dist = 0; + update_coeff_general(&accu_rate, &dummy_dist, si, eob, tx_size, tx_class, + bwl, height, rdmult, shift, txb_ctx->dc_sign_ctx, + dequant, scan, txb_costs, tcoeff, qcoeff, dqcoeff, + levels); + } + + const int tx_type_cost = get_tx_type_cost(cm, x, xd, plane, tx_size, tx_type); + if (eob == 0) + accu_rate += skip_cost; + else + accu_rate += non_skip_cost + tx_type_cost; + + p->eobs[block] = eob; + p->txb_entropy_ctx[block] = + av1_get_txb_entropy_context(qcoeff, scan_order, p->eobs[block]); + + *rate_cost = accu_rate; + return eob; +} + +// This function is deprecated, but we keep it here because hash trellis +// is not integrated with av1_optimize_txb_new yet +int av1_optimize_txb(const struct AV1_COMP *cpi, MACROBLOCK *x, int plane, + int blk_row, int blk_col, int block, TX_SIZE tx_size, + TXB_CTX *txb_ctx, int fast_mode, int *rate_cost) { + const AV1_COMMON *cm = &cpi->common; + MACROBLOCKD *const xd = &x->e_mbd; + const PLANE_TYPE plane_type = get_plane_type(plane); + const TX_SIZE txs_ctx = get_txsize_entropy_ctx(tx_size); + const TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, blk_row, blk_col, + tx_size, cm->reduced_tx_set_used); + const MB_MODE_INFO *mbmi = xd->mi[0]; + 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 = p->dequant_QTX; + const int seg_eob = av1_get_max_eob(tx_size); + const int bwl = get_txb_bwl(tx_size); + const int width = get_txb_wide(tx_size); + const int height = get_txb_high(tx_size); + const int is_inter = is_inter_block(mbmi); + const SCAN_ORDER *const scan_order = get_scan(tx_size, tx_type); + const LV_MAP_COEFF_COST *txb_costs = &x->coeff_costs[txs_ctx][plane_type]; + const int eob_multi_size = txsize_log2_minus4[tx_size]; + const LV_MAP_EOB_COST txb_eob_costs = + x->eob_costs[eob_multi_size][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 * (xd->bd - 8))) + + 2) >> + 2; + uint8_t levels_buf[TX_PAD_2D]; + uint8_t *const levels = set_levels(levels_buf, width); + const TX_SIZE qm_tx_size = av1_get_adjusted_tx_size(tx_size); + const qm_val_t *iqmatrix = + IS_2D_TRANSFORM(tx_type) + ? pd->seg_iqmatrix[mbmi->segment_id][qm_tx_size] + : cm->giqmatrix[NUM_QM_LEVELS - 1][0][qm_tx_size]; + assert(width == (1 << bwl)); + const int tx_type_cost = get_tx_type_cost(cm, x, xd, plane, tx_size, tx_type); + TxbInfo txb_info = { + qcoeff, levels, dqcoeff, tcoeff, dequant, shift, + tx_size, txs_ctx, tx_type, bwl, width, height, + eob, seg_eob, scan_order, txb_ctx, rdmult, &cm->coeff_ctx_table, + iqmatrix, tx_type_cost, + }; + + // Hash based trellis (hbt) speed feature: avoid expensive optimize_txb calls + // by storing the coefficient deltas in a hash table. + // Currently disabled in speedfeatures.c + if (eob <= HBT_EOB && eob > 0 && cpi->sf.use_hash_based_trellis) { + return hbt_create_hashes(&txb_info, txb_costs, &txb_eob_costs, p, block, + fast_mode, rate_cost); + } + + av1_txb_init_levels(qcoeff, width, height, levels); + + const int update = + optimize_txb(&txb_info, txb_costs, &txb_eob_costs, rate_cost); + + if (update) { + p->eobs[block] = txb_info.eob; + p->txb_entropy_ctx[block] = + av1_get_txb_entropy_context(qcoeff, scan_order, 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 *const 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]]); + if (cul_level > COEFF_CONTEXT_MASK) break; + } + + 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; + 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, + tx_size, cm->reduced_tx_set_used); + const SCAN_ORDER *const scan_order = get_scan(tx_size, tx_type); + const int cul_level = av1_get_txb_entropy_context(qcoeff, scan_order, eob); + av1_set_contexts(xd, pd, plane, plane_bsize, tx_size, cul_level, blk_col, + blk_row); +} + +static void update_tx_type_count(const AV1_COMMON *cm, MACROBLOCKD *xd, + int blk_row, int blk_col, int plane, + TX_SIZE tx_size, FRAME_COUNTS *counts, + uint8_t allow_update_cdf) { + MB_MODE_INFO *mbmi = xd->mi[0]; + int is_inter = is_inter_block(mbmi); + FRAME_CONTEXT *fc = xd->tile_ctx; +#if !CONFIG_ENTROPY_STATS + (void)counts; +#endif // !CONFIG_ENTROPY_STATS + + // Only y plane's tx_type is updated + if (plane > 0) return; + TX_TYPE tx_type = av1_get_tx_type(PLANE_TYPE_Y, xd, blk_row, blk_col, tx_size, + cm->reduced_tx_set_used); + if (get_ext_tx_types(tx_size, is_inter, cm->reduced_tx_set_used) > 1 && + cm->base_qindex > 0 && !mbmi->skip && + !segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) { + const int eset = get_ext_tx_set(tx_size, is_inter, cm->reduced_tx_set_used); + if (eset > 0) { + const TxSetType tx_set_type = + av1_get_ext_tx_set_type(tx_size, is_inter, cm->reduced_tx_set_used); + if (is_inter) { + if (allow_update_cdf) { + update_cdf(fc->inter_ext_tx_cdf[eset][txsize_sqr_map[tx_size]], + av1_ext_tx_ind[tx_set_type][tx_type], + av1_num_ext_tx_set[tx_set_type]); + } +#if CONFIG_ENTROPY_STATS + ++counts->inter_ext_tx[eset][txsize_sqr_map[tx_size]] + [av1_ext_tx_ind[tx_set_type][tx_type]]; +#endif // CONFIG_ENTROPY_STATS + } else { + PREDICTION_MODE intra_dir; + if (mbmi->filter_intra_mode_info.use_filter_intra) + intra_dir = fimode_to_intradir[mbmi->filter_intra_mode_info + .filter_intra_mode]; + else + intra_dir = mbmi->mode; +#if CONFIG_ENTROPY_STATS + ++counts->intra_ext_tx[eset][txsize_sqr_map[tx_size]][intra_dir] + [av1_ext_tx_ind[tx_set_type][tx_type]]; +#endif // CONFIG_ENTROPY_STATS + if (allow_update_cdf) { + update_cdf( + fc->intra_ext_tx_cdf[eset][txsize_sqr_map[tx_size]][intra_dir], + av1_ext_tx_ind[tx_set_type][tx_type], + av1_num_ext_tx_set[tx_set_type]); + } + } + } + } +} + +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]; + const int eob = p->eobs[block]; + 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 = get_txb_bwl(tx_size); + const int width = get_txb_wide(tx_size); + const int height = get_txb_high(tx_size); + const uint8_t allow_update_cdf = args->allow_update_cdf; + const TX_SIZE txsize_ctx = get_txsize_entropy_ctx(tx_size); + FRAME_CONTEXT *ec_ctx = xd->tile_ctx; +#if CONFIG_ENTROPY_STATS + int cdf_idx = cm->coef_cdf_category; +#endif // CONFIG_ENTROPY_STATS + +#if CONFIG_ENTROPY_STATS + ++td->counts->txb_skip[cdf_idx][txsize_ctx][txb_ctx.txb_skip_ctx][eob == 0]; +#endif // CONFIG_ENTROPY_STATS + if (allow_update_cdf) { + update_cdf(ec_ctx->txb_skip_cdf[txsize_ctx][txb_ctx.txb_skip_ctx], eob == 0, + 2); + } + + 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, plane_bsize, tx_size, 0, blk_col, blk_row); + return; + } + + tran_low_t *tcoeff = BLOCK_OFFSET(x->mbmi_ext->tcoeff[plane], block); + const int segment_id = mbmi->segment_id; + const int seg_eob = av1_get_tx_eob(&cpi->common.seg, segment_id, tx_size); + const tran_low_t *qcoeff = BLOCK_OFFSET(p->qcoeff, block); + memcpy(tcoeff, qcoeff, sizeof(*tcoeff) * seg_eob); + + uint8_t levels_buf[TX_PAD_2D]; + uint8_t *const levels = set_levels(levels_buf, width); + av1_txb_init_levels(tcoeff, width, height, levels); + update_tx_type_count(cm, xd, blk_row, blk_col, plane, tx_size, td->counts, + allow_update_cdf); + + const PLANE_TYPE plane_type = pd->plane_type; + const TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, blk_row, blk_col, + tx_size, cm->reduced_tx_set_used); + const TX_CLASS tx_class = tx_type_to_class[tx_type]; + const SCAN_ORDER *const scan_order = get_scan(tx_size, tx_type); + const int16_t *const scan = scan_order->scan; +#if CONFIG_ENTROPY_STATS + av1_update_eob_context(cdf_idx, eob, tx_size, tx_class, plane_type, ec_ctx, + td->counts, allow_update_cdf); +#else + av1_update_eob_context(eob, tx_size, tx_class, plane_type, ec_ctx, + allow_update_cdf); +#endif + + DECLARE_ALIGNED(16, int8_t, coeff_contexts[MAX_TX_SQUARE]); + av1_get_nz_map_contexts(levels, scan, eob, tx_size, tx_class, coeff_contexts); + + for (int c = eob - 1; c >= 0; --c) { + const int pos = scan[c]; + const int coeff_ctx = coeff_contexts[pos]; + const tran_low_t v = qcoeff[pos]; + const tran_low_t level = abs(v); + + if (allow_update_cdf) { + if (c == eob - 1) { + assert(coeff_ctx < 4); + update_cdf( + ec_ctx->coeff_base_eob_cdf[txsize_ctx][plane_type][coeff_ctx], + AOMMIN(level, 3) - 1, 3); + } else { + update_cdf(ec_ctx->coeff_base_cdf[txsize_ctx][plane_type][coeff_ctx], + AOMMIN(level, 3), 4); + } + } + { + if (c == eob - 1) { + assert(coeff_ctx < 4); +#if CONFIG_ENTROPY_STATS + ++td->counts->coeff_base_eob_multi[cdf_idx][txsize_ctx][plane_type] + [coeff_ctx][AOMMIN(level, 3) - 1]; + } else { + ++td->counts->coeff_base_multi[cdf_idx][txsize_ctx][plane_type] + [coeff_ctx][AOMMIN(level, 3)]; +#endif + } + } + if (level > NUM_BASE_LEVELS) { + const int base_range = level - 1 - NUM_BASE_LEVELS; + const int br_ctx = get_br_ctx(levels, pos, bwl, tx_class); + for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { + const int k = AOMMIN(base_range - idx, BR_CDF_SIZE - 1); + if (allow_update_cdf) { + update_cdf(ec_ctx->coeff_br_cdf[AOMMIN(txsize_ctx, TX_32X32)] + [plane_type][br_ctx], + k, BR_CDF_SIZE); + } + for (int lps = 0; lps < BR_CDF_SIZE - 1; lps++) { +#if CONFIG_ENTROPY_STATS + ++td->counts->coeff_lps[AOMMIN(txsize_ctx, TX_32X32)][plane_type][lps] + [br_ctx][lps == k]; +#endif // CONFIG_ENTROPY_STATS + if (lps == k) break; + } +#if CONFIG_ENTROPY_STATS + ++td->counts->coeff_lps_multi[cdf_idx][AOMMIN(txsize_ctx, TX_32X32)] + [plane_type][br_ctx][k]; +#endif + if (k < BR_CDF_SIZE - 1) break; + } + } + } + + // Update the context needed to code the DC sign (if applicable) + if (tcoeff[0] != 0) { + const int dc_sign = (tcoeff[0] < 0) ? 1 : 0; + const int dc_sign_ctx = txb_ctx.dc_sign_ctx; +#if CONFIG_ENTROPY_STATS + ++td->counts->dc_sign[plane_type][dc_sign_ctx][dc_sign]; +#endif // CONFIG_ENTROPY_STATS + if (allow_update_cdf) + update_cdf(ec_ctx->dc_sign_cdf[plane_type][dc_sign_ctx], dc_sign, 2); + x->mbmi_ext->dc_sign_ctx[plane][block] = dc_sign_ctx; + } + + const int cul_level = av1_get_txb_entropy_context(tcoeff, scan_order, eob); + av1_set_contexts(xd, pd, plane, plane_bsize, tx_size, cul_level, blk_col, + blk_row); +} + +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, uint8_t allow_update_cdf) { + const AV1_COMMON *const cm = &cpi->common; + const int num_planes = av1_num_planes(cm); + MACROBLOCK *const x = &td->mb; + MACROBLOCKD *const xd = &x->e_mbd; + MB_MODE_INFO *const mbmi = xd->mi[0]; + struct tokenize_b_args arg = { cpi, td, NULL, 0, allow_update_cdf }; + (void)rate; + (void)mi_row; + (void)mi_col; + if (mbmi->skip) { + av1_reset_skip_context(xd, mi_row, mi_col, bsize, num_planes); + return; + } + + if (!dry_run) { + av1_foreach_transformed_block(xd, bsize, mi_row, mi_col, + av1_update_and_record_txb_context, &arg, + num_planes); + } else if (dry_run == DRY_RUN_NORMAL) { + av1_foreach_transformed_block(xd, bsize, mi_row, mi_col, + av1_update_txb_context_b, &arg, num_planes); + } else { + printf("DRY_RUN_COSTCOEFFS is not supported yet\n"); + assert(0); + } +} |