static int decode_coefs(VP9_COMMON *cm, const MACROBLOCKD *xd, PLANE_TYPE type, int16_t *dqcoeff, TX_SIZE tx_size, const int16_t *dq, int ctx, const int16_t *scan, const int16_t *nb, vp9_reader *r) { const int max_eob = 16 << (tx_size << 1); const FRAME_CONTEXT *const fc = &cm->fc; FRAME_COUNTS *const counts = &cm->counts; const int ref = is_inter_block(&xd->mi[0]->mbmi); int band, c = 0; const vp9_prob (*coef_probs)[COEFF_CONTEXTS][UNCONSTRAINED_NODES] = fc->coef_probs[tx_size][type][ref]; const vp9_prob *prob; unsigned int (*coef_counts)[COEFF_CONTEXTS][UNCONSTRAINED_NODES + 1] = counts->coef[tx_size][type][ref]; unsigned int (*eob_branch_count)[COEFF_CONTEXTS] = counts->eob_branch[tx_size][type][ref]; uint8_t token_cache[32 * 32]; const uint8_t *band_translate = get_band_translate(tx_size); const int dq_shift = (tx_size == TX_32X32); int v; int16_t dqv = dq[0]; while (c < max_eob) { int val; band = *band_translate++; prob = coef_probs[band][ctx]; if (!cm->frame_parallel_decoding_mode) ++eob_branch_count[band][ctx]; if (!vp9_read(r, prob[EOB_CONTEXT_NODE])) { INCREMENT_COUNT(EOB_MODEL_TOKEN); break; } while (!vp9_read(r, prob[ZERO_CONTEXT_NODE])) { 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]; } // ONE_CONTEXT_NODE_0_ if (!vp9_read(r, prob[ONE_CONTEXT_NODE])) { INCREMENT_COUNT(ONE_TOKEN); WRITE_COEF_CONTINUE(1, ONE_TOKEN); } INCREMENT_COUNT(TWO_TOKEN); prob = vp9_pareto8_full[prob[PIVOT_NODE] - 1]; if (!vp9_read(r, prob[LOW_VAL_CONTEXT_NODE])) { if (!vp9_read(r, prob[TWO_CONTEXT_NODE])) { WRITE_COEF_CONTINUE(2, TWO_TOKEN); } if (!vp9_read(r, prob[THREE_CONTEXT_NODE])) { WRITE_COEF_CONTINUE(3, THREE_TOKEN); } WRITE_COEF_CONTINUE(4, FOUR_TOKEN); } if (!vp9_read(r, prob[HIGH_LOW_CONTEXT_NODE])) { if (!vp9_read(r, prob[CAT_ONE_CONTEXT_NODE])) { val = CAT1_MIN_VAL; ADJUST_COEF(vp9_cat1_prob[0], 0); WRITE_COEF_CONTINUE(val, CATEGORY1_TOKEN); } val = CAT2_MIN_VAL; ADJUST_COEF(vp9_cat2_prob[0], 1); ADJUST_COEF(vp9_cat2_prob[1], 0); WRITE_COEF_CONTINUE(val, CATEGORY2_TOKEN); } if (!vp9_read(r, prob[CAT_THREEFOUR_CONTEXT_NODE])) { if (!vp9_read(r, prob[CAT_THREE_CONTEXT_NODE])) { val = CAT3_MIN_VAL; ADJUST_COEF(vp9_cat3_prob[0], 2); ADJUST_COEF(vp9_cat3_prob[1], 1); ADJUST_COEF(vp9_cat3_prob[2], 0); WRITE_COEF_CONTINUE(val, CATEGORY3_TOKEN); } val = CAT4_MIN_VAL; ADJUST_COEF(vp9_cat4_prob[0], 3); ADJUST_COEF(vp9_cat4_prob[1], 2); ADJUST_COEF(vp9_cat4_prob[2], 1); ADJUST_COEF(vp9_cat4_prob[3], 0); WRITE_COEF_CONTINUE(val, CATEGORY4_TOKEN); } if (!vp9_read(r, prob[CAT_FIVE_CONTEXT_NODE])) { val = CAT5_MIN_VAL; ADJUST_COEF(vp9_cat5_prob[0], 4); ADJUST_COEF(vp9_cat5_prob[1], 3); ADJUST_COEF(vp9_cat5_prob[2], 2); ADJUST_COEF(vp9_cat5_prob[3], 1); ADJUST_COEF(vp9_cat5_prob[4], 0); WRITE_COEF_CONTINUE(val, CATEGORY5_TOKEN); } val = 0; val = (val << 1) | vp9_read(r, vp9_cat6_prob[0]); val = (val << 1) | vp9_read(r, vp9_cat6_prob[1]); val = (val << 1) | vp9_read(r, vp9_cat6_prob[2]); val = (val << 1) | vp9_read(r, vp9_cat6_prob[3]); val = (val << 1) | vp9_read(r, vp9_cat6_prob[4]); val = (val << 1) | vp9_read(r, vp9_cat6_prob[5]); val = (val << 1) | vp9_read(r, vp9_cat6_prob[6]); val = (val << 1) | vp9_read(r, vp9_cat6_prob[7]); val = (val << 1) | vp9_read(r, vp9_cat6_prob[8]); val = (val << 1) | vp9_read(r, vp9_cat6_prob[9]); val = (val << 1) | vp9_read(r, vp9_cat6_prob[10]); val = (val << 1) | vp9_read(r, vp9_cat6_prob[11]); val = (val << 1) | vp9_read(r, vp9_cat6_prob[12]); val = (val << 1) | vp9_read(r, vp9_cat6_prob[13]); val += CAT6_MIN_VAL; WRITE_COEF_CONTINUE(val, CATEGORY6_TOKEN); } return c; }
static int decode_coefs(VP9_COMMON *cm, const MACROBLOCKD *xd, vp9_reader *r, int block_idx, PLANE_TYPE type, int seg_eob, int16_t *qcoeff_ptr, TX_SIZE tx_size, const int16_t *dq, int pt) { const FRAME_CONTEXT *const fc = &cm->fc; FRAME_COUNTS *const counts = &cm->counts; const int ref = is_inter_block(&xd->mi_8x8[0]->mbmi); int band, c = 0; const vp9_prob (*coef_probs)[PREV_COEF_CONTEXTS][UNCONSTRAINED_NODES] = fc->coef_probs[tx_size][type][ref]; vp9_prob coef_probs_full[COEF_BANDS][PREV_COEF_CONTEXTS][ENTROPY_NODES]; uint8_t load_map[COEF_BANDS][PREV_COEF_CONTEXTS] = { { 0 } }; const vp9_prob *prob; vp9_coeff_count_model *coef_counts = counts->coef[tx_size]; const int16_t *scan, *nb; const uint8_t *const band_translate = get_band_translate(tx_size); uint8_t token_cache[1024]; get_scan(xd, tx_size, type, block_idx, &scan, &nb); while (1) { int val; const uint8_t *cat6 = cat6_prob; if (c >= seg_eob) break; if (c) pt = get_coef_context(nb, token_cache, c); band = get_coef_band(band_translate, c); prob = coef_probs[band][pt]; if (!cm->frame_parallel_decoding_mode) ++counts->eob_branch[tx_size][type][ref][band][pt]; if (!vp9_read(r, prob[EOB_CONTEXT_NODE])) break; SKIP_START: if (c >= seg_eob) break; if (c) pt = get_coef_context(nb, token_cache, c); band = get_coef_band(band_translate, c); prob = coef_probs[band][pt]; if (!vp9_read(r, prob[ZERO_CONTEXT_NODE])) { INCREMENT_COUNT(ZERO_TOKEN); ++c; goto SKIP_START; } // ONE_CONTEXT_NODE_0_ if (!vp9_read(r, prob[ONE_CONTEXT_NODE])) { WRITE_COEF_CONTINUE(1, ONE_TOKEN); } // Load full probabilities if not already loaded if (!load_map[band][pt]) { vp9_model_to_full_probs(coef_probs[band][pt], coef_probs_full[band][pt]); load_map[band][pt] = 1; } prob = coef_probs_full[band][pt]; // LOW_VAL_CONTEXT_NODE_0_ if (!vp9_read(r, prob[LOW_VAL_CONTEXT_NODE])) { if (!vp9_read(r, prob[TWO_CONTEXT_NODE])) { WRITE_COEF_CONTINUE(2, TWO_TOKEN); } if (!vp9_read(r, prob[THREE_CONTEXT_NODE])) { WRITE_COEF_CONTINUE(3, THREE_TOKEN); } WRITE_COEF_CONTINUE(4, FOUR_TOKEN); } // HIGH_LOW_CONTEXT_NODE_0_ if (!vp9_read(r, prob[HIGH_LOW_CONTEXT_NODE])) { if (!vp9_read(r, prob[CAT_ONE_CONTEXT_NODE])) { val = CAT1_MIN_VAL; ADJUST_COEF(CAT1_PROB0, 0); WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY1); } val = CAT2_MIN_VAL; ADJUST_COEF(CAT2_PROB1, 1); ADJUST_COEF(CAT2_PROB0, 0); WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY2); } // CAT_THREEFOUR_CONTEXT_NODE_0_ if (!vp9_read(r, prob[CAT_THREEFOUR_CONTEXT_NODE])) { if (!vp9_read(r, prob[CAT_THREE_CONTEXT_NODE])) { val = CAT3_MIN_VAL; ADJUST_COEF(CAT3_PROB2, 2); ADJUST_COEF(CAT3_PROB1, 1); ADJUST_COEF(CAT3_PROB0, 0); WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY3); } val = CAT4_MIN_VAL; ADJUST_COEF(CAT4_PROB3, 3); ADJUST_COEF(CAT4_PROB2, 2); ADJUST_COEF(CAT4_PROB1, 1); ADJUST_COEF(CAT4_PROB0, 0); WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY4); } // CAT_FIVE_CONTEXT_NODE_0_: if (!vp9_read(r, prob[CAT_FIVE_CONTEXT_NODE])) { val = CAT5_MIN_VAL; ADJUST_COEF(CAT5_PROB4, 4); ADJUST_COEF(CAT5_PROB3, 3); ADJUST_COEF(CAT5_PROB2, 2); ADJUST_COEF(CAT5_PROB1, 1); ADJUST_COEF(CAT5_PROB0, 0); WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY5); } val = 0; while (*cat6) { val = (val << 1) | vp9_read(r, *cat6++); } val += CAT6_MIN_VAL; WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY6); } if (c < seg_eob) { if (!cm->frame_parallel_decoding_mode) ++coef_counts[type][ref][band][pt][DCT_EOB_MODEL_TOKEN]; } return c; }