| /* |
| * Copyright (c) 2016, 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 "aom_mem/aom_mem.h" |
| #include "aom_ports/mem.h" |
| |
| #if CONFIG_ANS |
| #include "aom_dsp/ans.h" |
| #endif // CONFIG_ANS |
| #include "av1/common/blockd.h" |
| #include "av1/common/common.h" |
| #include "av1/common/entropy.h" |
| #include "av1/common/idct.h" |
| |
| #include "av1/decoder/detokenize.h" |
| |
| #define ACCT_STR __func__ |
| |
| #define EOB_CONTEXT_NODE 0 |
| #define ZERO_CONTEXT_NODE 1 |
| #define ONE_CONTEXT_NODE 2 |
| #define LOW_VAL_CONTEXT_NODE 0 |
| #define TWO_CONTEXT_NODE 1 |
| #define THREE_CONTEXT_NODE 2 |
| #define HIGH_LOW_CONTEXT_NODE 3 |
| #define CAT_ONE_CONTEXT_NODE 4 |
| #define CAT_THREEFOUR_CONTEXT_NODE 5 |
| #define CAT_THREE_CONTEXT_NODE 6 |
| #define CAT_FIVE_CONTEXT_NODE 7 |
| |
| #define INCREMENT_COUNT(token) \ |
| do { \ |
| if (counts) ++coef_counts[band][ctx][token]; \ |
| } while (0) |
| |
| static INLINE int read_coeff(const aom_prob *probs, int n, aom_reader *r) { |
| int i, val = 0; |
| for (i = 0; i < n; ++i) val = (val << 1) | aom_read(r, probs[i], ACCT_STR); |
| return val; |
| } |
| |
| #if CONFIG_AOM_QM |
| static int decode_coefs(const MACROBLOCKD *xd, PLANE_TYPE type, |
| tran_low_t *dqcoeff, TX_SIZE tx_size, TX_TYPE tx_type, |
| const int16_t *dq, int ctx, const int16_t *scan, |
| const int16_t *nb, aom_reader *r, |
| const qm_val_t *iqm[2][TX_SIZES]) |
| #else |
| static int decode_coefs(const MACROBLOCKD *xd, PLANE_TYPE type, |
| tran_low_t *dqcoeff, TX_SIZE tx_size, TX_TYPE tx_type, |
| const int16_t *dq, |
| #if CONFIG_NEW_QUANT |
| dequant_val_type_nuq *dq_val, |
| #endif // CONFIG_NEW_QUANT |
| int ctx, const int16_t *scan, const int16_t *nb, |
| int16_t *max_scan_line, aom_reader *r) |
| #endif |
| { |
| FRAME_COUNTS *counts = xd->counts; |
| const int max_eob = get_tx2d_size(tx_size); |
| const FRAME_CONTEXT *const fc = xd->fc; |
| const int ref = is_inter_block(&xd->mi[0]->mbmi); |
| #if CONFIG_AOM_QM |
| const qm_val_t *iqmatrix = iqm[!ref][tx_size]; |
| #endif |
| int band, c = 0; |
| const int tx_size_ctx = txsize_sqr_map[tx_size]; |
| const aom_prob(*coef_probs)[COEFF_CONTEXTS][UNCONSTRAINED_NODES] = |
| fc->coef_probs[tx_size_ctx][type][ref]; |
| const aom_prob *prob; |
| #if CONFIG_RANS || CONFIG_DAALA_EC |
| const aom_cdf_prob(*const coef_cdfs)[COEFF_CONTEXTS][ENTROPY_TOKENS] = |
| fc->coef_cdfs[tx_size_ctx][type][ref]; |
| const aom_cdf_prob(*cdf)[ENTROPY_TOKENS]; |
| #endif // CONFIG_RANS |
| unsigned int(*coef_counts)[COEFF_CONTEXTS][UNCONSTRAINED_NODES + 1]; |
| unsigned int(*eob_branch_count)[COEFF_CONTEXTS]; |
| uint8_t token_cache[MAX_TX_SQUARE]; |
| const uint8_t *band_translate = get_band_translate(tx_size); |
| int dq_shift; |
| int v, token; |
| int16_t dqv = dq[0]; |
| #if CONFIG_NEW_QUANT |
| const tran_low_t *dqv_val = &dq_val[0][0]; |
| #endif // CONFIG_NEW_QUANT |
| const uint8_t *cat1_prob; |
| const uint8_t *cat2_prob; |
| const uint8_t *cat3_prob; |
| const uint8_t *cat4_prob; |
| const uint8_t *cat5_prob; |
| const uint8_t *cat6_prob; |
| |
| if (counts) { |
| coef_counts = counts->coef[tx_size_ctx][type][ref]; |
| eob_branch_count = counts->eob_branch[tx_size_ctx][type][ref]; |
| } |
| |
| #if CONFIG_AOM_HIGHBITDEPTH |
| if (xd->bd > AOM_BITS_8) { |
| if (xd->bd == AOM_BITS_10) { |
| cat1_prob = av1_cat1_prob_high10; |
| cat2_prob = av1_cat2_prob_high10; |
| cat3_prob = av1_cat3_prob_high10; |
| cat4_prob = av1_cat4_prob_high10; |
| cat5_prob = av1_cat5_prob_high10; |
| cat6_prob = av1_cat6_prob_high10; |
| } else { |
| cat1_prob = av1_cat1_prob_high12; |
| cat2_prob = av1_cat2_prob_high12; |
| cat3_prob = av1_cat3_prob_high12; |
| cat4_prob = av1_cat4_prob_high12; |
| cat5_prob = av1_cat5_prob_high12; |
| cat6_prob = av1_cat6_prob_high12; |
| } |
| } else { |
| cat1_prob = av1_cat1_prob; |
| cat2_prob = av1_cat2_prob; |
| cat3_prob = av1_cat3_prob; |
| cat4_prob = av1_cat4_prob; |
| cat5_prob = av1_cat5_prob; |
| cat6_prob = av1_cat6_prob; |
| } |
| #else |
| cat1_prob = av1_cat1_prob; |
| cat2_prob = av1_cat2_prob; |
| cat3_prob = av1_cat3_prob; |
| cat4_prob = av1_cat4_prob; |
| cat5_prob = av1_cat5_prob; |
| cat6_prob = av1_cat6_prob; |
| #endif |
| |
| dq_shift = get_tx_scale(xd, tx_type, tx_size); |
| |
| while (c < max_eob) { |
| int val = -1; |
| band = *band_translate++; |
| prob = coef_probs[band][ctx]; |
| if (counts) ++eob_branch_count[band][ctx]; |
| if (!aom_read(r, prob[EOB_CONTEXT_NODE], ACCT_STR)) { |
| INCREMENT_COUNT(EOB_MODEL_TOKEN); |
| break; |
| } |
| |
| #if CONFIG_NEW_QUANT |
| dqv_val = &dq_val[band][0]; |
| #endif // CONFIG_NEW_QUANT |
| |
| while (!aom_read(r, prob[ZERO_CONTEXT_NODE], ACCT_STR)) { |
| INCREMENT_COUNT(ZERO_TOKEN); |
| dqv = dq[1]; |
| token_cache[scan[c]] = 0; |
| ++c; |
| if (c >= max_eob) return c; // zero tokens at the end (no eob token) |
| ctx = get_coef_context(nb, token_cache, c); |
| band = *band_translate++; |
| prob = coef_probs[band][ctx]; |
| #if CONFIG_NEW_QUANT |
| dqv_val = &dq_val[band][0]; |
| #endif // CONFIG_NEW_QUANT |
| } |
| |
| *max_scan_line = AOMMAX(*max_scan_line, scan[c]); |
| |
| #if CONFIG_RANS || CONFIG_DAALA_EC |
| cdf = &coef_cdfs[band][ctx]; |
| token = ONE_TOKEN + |
| aom_read_symbol(r, *cdf, CATEGORY6_TOKEN - ONE_TOKEN + 1, ACCT_STR); |
| INCREMENT_COUNT(ONE_TOKEN + (token > ONE_TOKEN)); |
| switch (token) { |
| case ONE_TOKEN: |
| case TWO_TOKEN: |
| case THREE_TOKEN: |
| case FOUR_TOKEN: val = token; break; |
| case CATEGORY1_TOKEN: |
| val = CAT1_MIN_VAL + read_coeff(cat1_prob, 1, r); |
| break; |
| case CATEGORY2_TOKEN: |
| val = CAT2_MIN_VAL + read_coeff(cat2_prob, 2, r); |
| break; |
| case CATEGORY3_TOKEN: |
| val = CAT3_MIN_VAL + read_coeff(cat3_prob, 3, r); |
| break; |
| case CATEGORY4_TOKEN: |
| val = CAT4_MIN_VAL + read_coeff(cat4_prob, 4, r); |
| break; |
| case CATEGORY5_TOKEN: |
| val = CAT5_MIN_VAL + read_coeff(cat5_prob, 5, r); |
| break; |
| case CATEGORY6_TOKEN: { |
| const int skip_bits = TX_SIZES - 1 - txsize_sqr_up_map[tx_size]; |
| const uint8_t *cat6p = cat6_prob + skip_bits; |
| #if CONFIG_AOM_HIGHBITDEPTH |
| switch (xd->bd) { |
| case AOM_BITS_8: |
| val = CAT6_MIN_VAL + read_coeff(cat6p, 14 - skip_bits, r); |
| break; |
| case AOM_BITS_10: |
| val = CAT6_MIN_VAL + read_coeff(cat6p, 16 - skip_bits, r); |
| break; |
| case AOM_BITS_12: |
| val = CAT6_MIN_VAL + read_coeff(cat6p, 18 - skip_bits, r); |
| break; |
| default: assert(0); return -1; |
| } |
| #else |
| val = CAT6_MIN_VAL + read_coeff(cat6p, 14 - skip_bits, r); |
| #endif |
| } break; |
| } |
| #else |
| if (!aom_read(r, prob[ONE_CONTEXT_NODE], ACCT_STR)) { |
| INCREMENT_COUNT(ONE_TOKEN); |
| token = ONE_TOKEN; |
| val = 1; |
| } else { |
| INCREMENT_COUNT(TWO_TOKEN); |
| token = aom_read_tree(r, av1_coef_con_tree, |
| av1_pareto8_full[prob[PIVOT_NODE] - 1], ACCT_STR); |
| switch (token) { |
| case TWO_TOKEN: |
| case THREE_TOKEN: |
| case FOUR_TOKEN: val = token; break; |
| case CATEGORY1_TOKEN: |
| val = CAT1_MIN_VAL + read_coeff(cat1_prob, 1, r); |
| break; |
| case CATEGORY2_TOKEN: |
| val = CAT2_MIN_VAL + read_coeff(cat2_prob, 2, r); |
| break; |
| case CATEGORY3_TOKEN: |
| val = CAT3_MIN_VAL + read_coeff(cat3_prob, 3, r); |
| break; |
| case CATEGORY4_TOKEN: |
| val = CAT4_MIN_VAL + read_coeff(cat4_prob, 4, r); |
| break; |
| case CATEGORY5_TOKEN: |
| val = CAT5_MIN_VAL + read_coeff(cat5_prob, 5, r); |
| break; |
| case CATEGORY6_TOKEN: { |
| const int skip_bits = TX_SIZES - 1 - txsize_sqr_up_map[tx_size]; |
| const uint8_t *cat6p = cat6_prob + skip_bits; |
| #if CONFIG_AOM_HIGHBITDEPTH |
| switch (xd->bd) { |
| case AOM_BITS_8: |
| val = CAT6_MIN_VAL + read_coeff(cat6p, 14 - skip_bits, r); |
| break; |
| case AOM_BITS_10: |
| val = CAT6_MIN_VAL + read_coeff(cat6p, 16 - skip_bits, r); |
| break; |
| case AOM_BITS_12: |
| val = CAT6_MIN_VAL + read_coeff(cat6p, 18 - skip_bits, r); |
| break; |
| default: assert(0); return -1; |
| } |
| #else |
| val = CAT6_MIN_VAL + read_coeff(cat6p, 14 - skip_bits, r); |
| #endif |
| break; |
| } |
| } |
| } |
| #endif // CONFIG_RANS |
| #if CONFIG_NEW_QUANT |
| v = av1_dequant_abscoeff_nuq(val, dqv, dqv_val); |
| v = dq_shift ? ROUND_POWER_OF_TWO(v, dq_shift) : v; |
| #else |
| #if CONFIG_AOM_QM |
| dqv = ((iqmatrix[scan[c]] * (int)dqv) + (1 << (AOM_QM_BITS - 1))) >> |
| AOM_QM_BITS; |
| #endif |
| v = (val * dqv) >> dq_shift; |
| #endif // CONFIG_NEW_QUANT |
| |
| #if CONFIG_COEFFICIENT_RANGE_CHECKING |
| #if CONFIG_AOM_HIGHBITDEPTH |
| dqcoeff[scan[c]] = |
| highbd_check_range((aom_read_bit(r, ACCT_STR) ? -v : v), xd->bd); |
| #else |
| dqcoeff[scan[c]] = check_range(aom_read_bit(r, ACCT_STR) ? -v : v); |
| #endif // CONFIG_AOM_HIGHBITDEPTH |
| #else |
| dqcoeff[scan[c]] = aom_read_bit(r, ACCT_STR) ? -v : v; |
| #endif // CONFIG_COEFFICIENT_RANGE_CHECKING |
| token_cache[scan[c]] = av1_pt_energy_class[token]; |
| ++c; |
| ctx = get_coef_context(nb, token_cache, c); |
| dqv = dq[1]; |
| } |
| |
| return c; |
| } |
| |
| #if CONFIG_PALETTE |
| void av1_decode_palette_tokens(MACROBLOCKD *const xd, int plane, |
| aom_reader *r) { |
| const MODE_INFO *const mi = xd->mi[0]; |
| const MB_MODE_INFO *const mbmi = &mi->mbmi; |
| const BLOCK_SIZE bsize = mbmi->sb_type; |
| const int rows = (4 * num_4x4_blocks_high_lookup[bsize]) >> |
| (xd->plane[plane != 0].subsampling_y); |
| const int cols = (4 * num_4x4_blocks_wide_lookup[bsize]) >> |
| (xd->plane[plane != 0].subsampling_x); |
| uint8_t color_order[PALETTE_MAX_SIZE]; |
| const int n = mbmi->palette_mode_info.palette_size[plane != 0]; |
| int i, j; |
| uint8_t *color_map = xd->plane[plane != 0].color_index_map; |
| const aom_prob(*const prob)[PALETTE_COLOR_CONTEXTS][PALETTE_COLORS - 1] = |
| plane ? av1_default_palette_uv_color_prob |
| : av1_default_palette_y_color_prob; |
| |
| for (i = 0; i < rows; ++i) { |
| for (j = (i == 0 ? 1 : 0); j < cols; ++j) { |
| const int color_ctx = av1_get_palette_color_context(color_map, cols, i, j, |
| n, color_order, NULL); |
| const int color_idx = aom_read_tree(r, av1_palette_color_tree[n - 2], |
| prob[n - 2][color_ctx], ACCT_STR); |
| assert(color_idx >= 0 && color_idx < n); |
| color_map[i * cols + j] = color_order[color_idx]; |
| } |
| } |
| } |
| #endif // CONFIG_PALETTE |
| |
| int av1_decode_block_tokens(MACROBLOCKD *const xd, int plane, |
| const SCAN_ORDER *sc, int x, int y, TX_SIZE tx_size, |
| TX_TYPE tx_type, int16_t *max_scan_line, |
| aom_reader *r, int seg_id) { |
| struct macroblockd_plane *const pd = &xd->plane[plane]; |
| const int16_t *const dequant = pd->seg_dequant[seg_id]; |
| const int ctx = |
| get_entropy_context(tx_size, pd->above_context + x, pd->left_context + y); |
| #if CONFIG_NEW_QUANT |
| const int ref = is_inter_block(&xd->mi[0]->mbmi); |
| int dq = |
| get_dq_profile_from_ctx(xd->qindex[seg_id], ctx, ref, pd->plane_type); |
| #endif // CONFIG_NEW_QUANT |
| |
| #if CONFIG_AOM_QM |
| const int eob = decode_coefs(xd, pd->plane_type, pd->dqcoeff, tx_size, |
| tx_type, dequant, ctx, sc->scan, sc->neighbors, |
| &sc->max_scan_line, r, pd->seg_iqmatrix[seg_id]); |
| #else |
| const int eob = |
| decode_coefs(xd, pd->plane_type, pd->dqcoeff, tx_size, tx_type, dequant, |
| #if CONFIG_NEW_QUANT |
| pd->seg_dequant_nuq[seg_id][dq], |
| #endif // CONFIG_NEW_QUANT |
| ctx, sc->scan, sc->neighbors, max_scan_line, r); |
| #endif // CONFIG_AOM_QM |
| av1_set_contexts(xd, pd, tx_size, eob > 0, x, y); |
| return eob; |
| } |
