1233d2500723e5594f3e7c70896ffeeef32b9c950ywan/* 2233d2500723e5594f3e7c70896ffeeef32b9c950ywan * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3233d2500723e5594f3e7c70896ffeeef32b9c950ywan * 4233d2500723e5594f3e7c70896ffeeef32b9c950ywan * Use of this source code is governed by a BSD-style license 5233d2500723e5594f3e7c70896ffeeef32b9c950ywan * that can be found in the LICENSE file in the root of the source 6233d2500723e5594f3e7c70896ffeeef32b9c950ywan * tree. An additional intellectual property rights grant can be found 7233d2500723e5594f3e7c70896ffeeef32b9c950ywan * in the file PATENTS. All contributing project authors may 8233d2500723e5594f3e7c70896ffeeef32b9c950ywan * be found in the AUTHORS file in the root of the source tree. 9233d2500723e5594f3e7c70896ffeeef32b9c950ywan */ 10233d2500723e5594f3e7c70896ffeeef32b9c950ywan 11233d2500723e5594f3e7c70896ffeeef32b9c950ywan#include "vpx_mem/vpx_mem.h" 12233d2500723e5594f3e7c70896ffeeef32b9c950ywan#include "vpx_ports/mem.h" 13233d2500723e5594f3e7c70896ffeeef32b9c950ywan 14233d2500723e5594f3e7c70896ffeeef32b9c950ywan#include "vp9/common/vp9_blockd.h" 15233d2500723e5594f3e7c70896ffeeef32b9c950ywan#include "vp9/common/vp9_common.h" 16233d2500723e5594f3e7c70896ffeeef32b9c950ywan 17233d2500723e5594f3e7c70896ffeeef32b9c950ywan#include "vp9/decoder/vp9_detokenize.h" 18233d2500723e5594f3e7c70896ffeeef32b9c950ywan 19233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define EOB_CONTEXT_NODE 0 20233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define ZERO_CONTEXT_NODE 1 21233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define ONE_CONTEXT_NODE 2 22233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define LOW_VAL_CONTEXT_NODE 0 23233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define TWO_CONTEXT_NODE 1 24233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define THREE_CONTEXT_NODE 2 25233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define HIGH_LOW_CONTEXT_NODE 3 26233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT_ONE_CONTEXT_NODE 4 27233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT_THREEFOUR_CONTEXT_NODE 5 28233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT_THREE_CONTEXT_NODE 6 29233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT_FIVE_CONTEXT_NODE 7 30233d2500723e5594f3e7c70896ffeeef32b9c950ywan 31233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT1_MIN_VAL 5 32233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT2_MIN_VAL 7 33233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT3_MIN_VAL 11 34233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT4_MIN_VAL 19 35233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT5_MIN_VAL 35 36233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT6_MIN_VAL 67 37233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT1_PROB0 159 38233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT2_PROB0 145 39233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT2_PROB1 165 40233d2500723e5594f3e7c70896ffeeef32b9c950ywan 41233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT3_PROB0 140 42233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT3_PROB1 148 43233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT3_PROB2 173 44233d2500723e5594f3e7c70896ffeeef32b9c950ywan 45233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT4_PROB0 135 46233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT4_PROB1 140 47233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT4_PROB2 155 48233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT4_PROB3 176 49233d2500723e5594f3e7c70896ffeeef32b9c950ywan 50233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT5_PROB0 130 51233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT5_PROB1 134 52233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT5_PROB2 141 53233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT5_PROB3 157 54233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define CAT5_PROB4 180 55233d2500723e5594f3e7c70896ffeeef32b9c950ywan 56233d2500723e5594f3e7c70896ffeeef32b9c950ywanstatic const vp9_prob cat6_prob[15] = { 57233d2500723e5594f3e7c70896ffeeef32b9c950ywan 254, 254, 254, 252, 249, 243, 230, 196, 177, 153, 140, 133, 130, 129, 0 58233d2500723e5594f3e7c70896ffeeef32b9c950ywan}; 59233d2500723e5594f3e7c70896ffeeef32b9c950ywan 60233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define INCREMENT_COUNT(token) \ 61233d2500723e5594f3e7c70896ffeeef32b9c950ywan do { \ 62233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (!cm->frame_parallel_decoding_mode) \ 63233d2500723e5594f3e7c70896ffeeef32b9c950ywan ++coef_counts[band][ctx][token]; \ 64233d2500723e5594f3e7c70896ffeeef32b9c950ywan } while (0) 65233d2500723e5594f3e7c70896ffeeef32b9c950ywan 66233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define WRITE_COEF_CONTINUE(val, token) \ 67233d2500723e5594f3e7c70896ffeeef32b9c950ywan { \ 68233d2500723e5594f3e7c70896ffeeef32b9c950ywan v = (val * dqv) >> dq_shift; \ 69233d2500723e5594f3e7c70896ffeeef32b9c950ywan dqcoeff[scan[c]] = vp9_read_bit(r) ? -v : v; \ 70233d2500723e5594f3e7c70896ffeeef32b9c950ywan token_cache[scan[c]] = vp9_pt_energy_class[token]; \ 71233d2500723e5594f3e7c70896ffeeef32b9c950ywan ++c; \ 72233d2500723e5594f3e7c70896ffeeef32b9c950ywan ctx = get_coef_context(nb, token_cache, c); \ 73233d2500723e5594f3e7c70896ffeeef32b9c950ywan dqv = dq[1]; \ 74233d2500723e5594f3e7c70896ffeeef32b9c950ywan continue; \ 75233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 76233d2500723e5594f3e7c70896ffeeef32b9c950ywan 77233d2500723e5594f3e7c70896ffeeef32b9c950ywan#define ADJUST_COEF(prob, bits_count) \ 78233d2500723e5594f3e7c70896ffeeef32b9c950ywan do { \ 79233d2500723e5594f3e7c70896ffeeef32b9c950ywan val += (vp9_read(r, prob) << bits_count); \ 80233d2500723e5594f3e7c70896ffeeef32b9c950ywan } while (0) 81233d2500723e5594f3e7c70896ffeeef32b9c950ywan 82233d2500723e5594f3e7c70896ffeeef32b9c950ywanstatic int decode_coefs(VP9_COMMON *cm, const MACROBLOCKD *xd, PLANE_TYPE type, 83233d2500723e5594f3e7c70896ffeeef32b9c950ywan int16_t *dqcoeff, TX_SIZE tx_size, const int16_t *dq, 84233d2500723e5594f3e7c70896ffeeef32b9c950ywan int ctx, const int16_t *scan, const int16_t *nb, 85233d2500723e5594f3e7c70896ffeeef32b9c950ywan vp9_reader *r) { 86233d2500723e5594f3e7c70896ffeeef32b9c950ywan const int max_eob = 16 << (tx_size << 1); 87233d2500723e5594f3e7c70896ffeeef32b9c950ywan const FRAME_CONTEXT *const fc = &cm->fc; 88233d2500723e5594f3e7c70896ffeeef32b9c950ywan FRAME_COUNTS *const counts = &cm->counts; 89233d2500723e5594f3e7c70896ffeeef32b9c950ywan const int ref = is_inter_block(&xd->mi[0]->mbmi); 90233d2500723e5594f3e7c70896ffeeef32b9c950ywan int band, c = 0; 91233d2500723e5594f3e7c70896ffeeef32b9c950ywan const vp9_prob (*coef_probs)[COEFF_CONTEXTS][UNCONSTRAINED_NODES] = 92233d2500723e5594f3e7c70896ffeeef32b9c950ywan fc->coef_probs[tx_size][type][ref]; 93233d2500723e5594f3e7c70896ffeeef32b9c950ywan const vp9_prob *prob; 94233d2500723e5594f3e7c70896ffeeef32b9c950ywan unsigned int (*coef_counts)[COEFF_CONTEXTS][UNCONSTRAINED_NODES + 1] = 95233d2500723e5594f3e7c70896ffeeef32b9c950ywan counts->coef[tx_size][type][ref]; 96233d2500723e5594f3e7c70896ffeeef32b9c950ywan unsigned int (*eob_branch_count)[COEFF_CONTEXTS] = 97233d2500723e5594f3e7c70896ffeeef32b9c950ywan counts->eob_branch[tx_size][type][ref]; 98233d2500723e5594f3e7c70896ffeeef32b9c950ywan uint8_t token_cache[32 * 32]; 99233d2500723e5594f3e7c70896ffeeef32b9c950ywan const uint8_t *cat6; 100233d2500723e5594f3e7c70896ffeeef32b9c950ywan const uint8_t *band_translate = get_band_translate(tx_size); 101233d2500723e5594f3e7c70896ffeeef32b9c950ywan const int dq_shift = (tx_size == TX_32X32); 102233d2500723e5594f3e7c70896ffeeef32b9c950ywan int v; 103233d2500723e5594f3e7c70896ffeeef32b9c950ywan int16_t dqv = dq[0]; 104233d2500723e5594f3e7c70896ffeeef32b9c950ywan 105233d2500723e5594f3e7c70896ffeeef32b9c950ywan while (c < max_eob) { 106233d2500723e5594f3e7c70896ffeeef32b9c950ywan int val; 107233d2500723e5594f3e7c70896ffeeef32b9c950ywan band = *band_translate++; 108233d2500723e5594f3e7c70896ffeeef32b9c950ywan prob = coef_probs[band][ctx]; 109233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (!cm->frame_parallel_decoding_mode) 110233d2500723e5594f3e7c70896ffeeef32b9c950ywan ++eob_branch_count[band][ctx]; 111233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (!vp9_read(r, prob[EOB_CONTEXT_NODE])) { 112233d2500723e5594f3e7c70896ffeeef32b9c950ywan INCREMENT_COUNT(EOB_MODEL_TOKEN); 113233d2500723e5594f3e7c70896ffeeef32b9c950ywan break; 114233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 115233d2500723e5594f3e7c70896ffeeef32b9c950ywan 116233d2500723e5594f3e7c70896ffeeef32b9c950ywan while (!vp9_read(r, prob[ZERO_CONTEXT_NODE])) { 117233d2500723e5594f3e7c70896ffeeef32b9c950ywan INCREMENT_COUNT(ZERO_TOKEN); 118233d2500723e5594f3e7c70896ffeeef32b9c950ywan dqv = dq[1]; 119233d2500723e5594f3e7c70896ffeeef32b9c950ywan token_cache[scan[c]] = 0; 120233d2500723e5594f3e7c70896ffeeef32b9c950ywan ++c; 121233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (c >= max_eob) 122233d2500723e5594f3e7c70896ffeeef32b9c950ywan return c; // zero tokens at the end (no eob token) 123233d2500723e5594f3e7c70896ffeeef32b9c950ywan ctx = get_coef_context(nb, token_cache, c); 124233d2500723e5594f3e7c70896ffeeef32b9c950ywan band = *band_translate++; 125233d2500723e5594f3e7c70896ffeeef32b9c950ywan prob = coef_probs[band][ctx]; 126233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 127233d2500723e5594f3e7c70896ffeeef32b9c950ywan 128233d2500723e5594f3e7c70896ffeeef32b9c950ywan // ONE_CONTEXT_NODE_0_ 129233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (!vp9_read(r, prob[ONE_CONTEXT_NODE])) { 130233d2500723e5594f3e7c70896ffeeef32b9c950ywan INCREMENT_COUNT(ONE_TOKEN); 131233d2500723e5594f3e7c70896ffeeef32b9c950ywan WRITE_COEF_CONTINUE(1, ONE_TOKEN); 132233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 133233d2500723e5594f3e7c70896ffeeef32b9c950ywan 134233d2500723e5594f3e7c70896ffeeef32b9c950ywan INCREMENT_COUNT(TWO_TOKEN); 135233d2500723e5594f3e7c70896ffeeef32b9c950ywan 136233d2500723e5594f3e7c70896ffeeef32b9c950ywan prob = vp9_pareto8_full[prob[PIVOT_NODE] - 1]; 137233d2500723e5594f3e7c70896ffeeef32b9c950ywan 138233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (!vp9_read(r, prob[LOW_VAL_CONTEXT_NODE])) { 139233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (!vp9_read(r, prob[TWO_CONTEXT_NODE])) { 140233d2500723e5594f3e7c70896ffeeef32b9c950ywan WRITE_COEF_CONTINUE(2, TWO_TOKEN); 141233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 142233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (!vp9_read(r, prob[THREE_CONTEXT_NODE])) { 143233d2500723e5594f3e7c70896ffeeef32b9c950ywan WRITE_COEF_CONTINUE(3, THREE_TOKEN); 144233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 145233d2500723e5594f3e7c70896ffeeef32b9c950ywan WRITE_COEF_CONTINUE(4, FOUR_TOKEN); 146233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 147233d2500723e5594f3e7c70896ffeeef32b9c950ywan 148233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (!vp9_read(r, prob[HIGH_LOW_CONTEXT_NODE])) { 149233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (!vp9_read(r, prob[CAT_ONE_CONTEXT_NODE])) { 150233d2500723e5594f3e7c70896ffeeef32b9c950ywan val = CAT1_MIN_VAL; 151233d2500723e5594f3e7c70896ffeeef32b9c950ywan ADJUST_COEF(CAT1_PROB0, 0); 152233d2500723e5594f3e7c70896ffeeef32b9c950ywan WRITE_COEF_CONTINUE(val, CATEGORY1_TOKEN); 153233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 154233d2500723e5594f3e7c70896ffeeef32b9c950ywan val = CAT2_MIN_VAL; 155233d2500723e5594f3e7c70896ffeeef32b9c950ywan ADJUST_COEF(CAT2_PROB1, 1); 156233d2500723e5594f3e7c70896ffeeef32b9c950ywan ADJUST_COEF(CAT2_PROB0, 0); 157233d2500723e5594f3e7c70896ffeeef32b9c950ywan WRITE_COEF_CONTINUE(val, CATEGORY2_TOKEN); 158233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 159233d2500723e5594f3e7c70896ffeeef32b9c950ywan 160233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (!vp9_read(r, prob[CAT_THREEFOUR_CONTEXT_NODE])) { 161233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (!vp9_read(r, prob[CAT_THREE_CONTEXT_NODE])) { 162233d2500723e5594f3e7c70896ffeeef32b9c950ywan val = CAT3_MIN_VAL; 163233d2500723e5594f3e7c70896ffeeef32b9c950ywan ADJUST_COEF(CAT3_PROB2, 2); 164233d2500723e5594f3e7c70896ffeeef32b9c950ywan ADJUST_COEF(CAT3_PROB1, 1); 165233d2500723e5594f3e7c70896ffeeef32b9c950ywan ADJUST_COEF(CAT3_PROB0, 0); 166233d2500723e5594f3e7c70896ffeeef32b9c950ywan WRITE_COEF_CONTINUE(val, CATEGORY3_TOKEN); 167233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 168233d2500723e5594f3e7c70896ffeeef32b9c950ywan val = CAT4_MIN_VAL; 169233d2500723e5594f3e7c70896ffeeef32b9c950ywan ADJUST_COEF(CAT4_PROB3, 3); 170233d2500723e5594f3e7c70896ffeeef32b9c950ywan ADJUST_COEF(CAT4_PROB2, 2); 171233d2500723e5594f3e7c70896ffeeef32b9c950ywan ADJUST_COEF(CAT4_PROB1, 1); 172233d2500723e5594f3e7c70896ffeeef32b9c950ywan ADJUST_COEF(CAT4_PROB0, 0); 173233d2500723e5594f3e7c70896ffeeef32b9c950ywan WRITE_COEF_CONTINUE(val, CATEGORY4_TOKEN); 174233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 175233d2500723e5594f3e7c70896ffeeef32b9c950ywan 176233d2500723e5594f3e7c70896ffeeef32b9c950ywan if (!vp9_read(r, prob[CAT_FIVE_CONTEXT_NODE])) { 177233d2500723e5594f3e7c70896ffeeef32b9c950ywan val = CAT5_MIN_VAL; 178233d2500723e5594f3e7c70896ffeeef32b9c950ywan ADJUST_COEF(CAT5_PROB4, 4); 179233d2500723e5594f3e7c70896ffeeef32b9c950ywan ADJUST_COEF(CAT5_PROB3, 3); 180233d2500723e5594f3e7c70896ffeeef32b9c950ywan ADJUST_COEF(CAT5_PROB2, 2); 181233d2500723e5594f3e7c70896ffeeef32b9c950ywan ADJUST_COEF(CAT5_PROB1, 1); 182233d2500723e5594f3e7c70896ffeeef32b9c950ywan ADJUST_COEF(CAT5_PROB0, 0); 183233d2500723e5594f3e7c70896ffeeef32b9c950ywan WRITE_COEF_CONTINUE(val, CATEGORY5_TOKEN); 184233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 185233d2500723e5594f3e7c70896ffeeef32b9c950ywan val = 0; 186233d2500723e5594f3e7c70896ffeeef32b9c950ywan cat6 = cat6_prob; 187233d2500723e5594f3e7c70896ffeeef32b9c950ywan while (*cat6) 188233d2500723e5594f3e7c70896ffeeef32b9c950ywan val = (val << 1) | vp9_read(r, *cat6++); 189233d2500723e5594f3e7c70896ffeeef32b9c950ywan val += CAT6_MIN_VAL; 190233d2500723e5594f3e7c70896ffeeef32b9c950ywan 191233d2500723e5594f3e7c70896ffeeef32b9c950ywan WRITE_COEF_CONTINUE(val, CATEGORY6_TOKEN); 192233d2500723e5594f3e7c70896ffeeef32b9c950ywan } 193233d2500723e5594f3e7c70896ffeeef32b9c950ywan 194233d2500723e5594f3e7c70896ffeeef32b9c950ywan return c; 195233d2500723e5594f3e7c70896ffeeef32b9c950ywan} 196233d2500723e5594f3e7c70896ffeeef32b9c950ywan 197233d2500723e5594f3e7c70896ffeeef32b9c950ywanint vp9_decode_block_tokens(VP9_COMMON *cm, MACROBLOCKD *xd, 198233d2500723e5594f3e7c70896ffeeef32b9c950ywan int plane, int block, BLOCK_SIZE plane_bsize, 199233d2500723e5594f3e7c70896ffeeef32b9c950ywan int x, int y, TX_SIZE tx_size, vp9_reader *r) { 200233d2500723e5594f3e7c70896ffeeef32b9c950ywan struct macroblockd_plane *const pd = &xd->plane[plane]; 201233d2500723e5594f3e7c70896ffeeef32b9c950ywan const int ctx = get_entropy_context(tx_size, pd->above_context + x, 202233d2500723e5594f3e7c70896ffeeef32b9c950ywan pd->left_context + y); 203233d2500723e5594f3e7c70896ffeeef32b9c950ywan const scan_order *so = get_scan(xd, tx_size, pd->plane_type, block); 204233d2500723e5594f3e7c70896ffeeef32b9c950ywan const int eob = decode_coefs(cm, xd, pd->plane_type, 205233d2500723e5594f3e7c70896ffeeef32b9c950ywan BLOCK_OFFSET(pd->dqcoeff, block), tx_size, 206233d2500723e5594f3e7c70896ffeeef32b9c950ywan pd->dequant, ctx, so->scan, so->neighbors, r); 207233d2500723e5594f3e7c70896ffeeef32b9c950ywan vp9_set_contexts(xd, pd, plane_bsize, tx_size, eob > 0, x, y); 208233d2500723e5594f3e7c70896ffeeef32b9c950ywan return eob; 209233d2500723e5594f3e7c70896ffeeef32b9c950ywan} 210233d2500723e5594f3e7c70896ffeeef32b9c950ywan 211233d2500723e5594f3e7c70896ffeeef32b9c950ywan 212