entropy.c (8085B)
1 /* 2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved. 3 * 4 * This source code is subject to the terms of the BSD 2 Clause License and 5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License 6 * was not distributed with this source code in the LICENSE file, you can 7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open 8 * Media Patent License 1.0 was not distributed with this source code in the 9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent. 10 */ 11 12 #include "config/aom_config.h" 13 14 #include "aom/aom_integer.h" 15 #include "aom_mem/aom_mem.h" 16 #include "av1/common/av1_common_int.h" 17 #include "av1/common/blockd.h" 18 #include "av1/common/entropy.h" 19 #include "av1/common/entropymode.h" 20 #include "av1/common/scan.h" 21 #include "av1/common/token_cdfs.h" 22 #include "av1/common/txb_common.h" 23 24 static int get_q_ctx(int q) { 25 if (q <= 20) return 0; 26 if (q <= 60) return 1; 27 if (q <= 120) return 2; 28 return 3; 29 } 30 31 void av1_default_coef_probs(AV1_COMMON *cm) { 32 const int index = get_q_ctx(cm->quant_params.base_qindex); 33 #if CONFIG_ENTROPY_STATS 34 cm->coef_cdf_category = index; 35 #endif 36 37 av1_copy(cm->fc->txb_skip_cdf, av1_default_txb_skip_cdfs[index]); 38 av1_copy(cm->fc->eob_extra_cdf, av1_default_eob_extra_cdfs[index]); 39 av1_copy(cm->fc->dc_sign_cdf, av1_default_dc_sign_cdfs[index]); 40 av1_copy(cm->fc->coeff_br_cdf, av1_default_coeff_lps_multi_cdfs[index]); 41 av1_copy(cm->fc->coeff_base_cdf, av1_default_coeff_base_multi_cdfs[index]); 42 av1_copy(cm->fc->coeff_base_eob_cdf, 43 av1_default_coeff_base_eob_multi_cdfs[index]); 44 av1_copy(cm->fc->eob_flag_cdf16, av1_default_eob_multi16_cdfs[index]); 45 av1_copy(cm->fc->eob_flag_cdf32, av1_default_eob_multi32_cdfs[index]); 46 av1_copy(cm->fc->eob_flag_cdf64, av1_default_eob_multi64_cdfs[index]); 47 av1_copy(cm->fc->eob_flag_cdf128, av1_default_eob_multi128_cdfs[index]); 48 av1_copy(cm->fc->eob_flag_cdf256, av1_default_eob_multi256_cdfs[index]); 49 av1_copy(cm->fc->eob_flag_cdf512, av1_default_eob_multi512_cdfs[index]); 50 av1_copy(cm->fc->eob_flag_cdf1024, av1_default_eob_multi1024_cdfs[index]); 51 } 52 53 static inline void reset_cdf_symbol_counter(aom_cdf_prob *cdf_ptr, int num_cdfs, 54 int cdf_stride, int nsymbs) { 55 for (int i = 0; i < num_cdfs; i++) { 56 cdf_ptr[i * cdf_stride + nsymbs] = 0; 57 } 58 } 59 60 #define RESET_CDF_COUNTER(cname, nsymbs) \ 61 RESET_CDF_COUNTER_STRIDE(cname, nsymbs, CDF_SIZE(nsymbs)) 62 63 #define RESET_CDF_COUNTER_STRIDE(cname, nsymbs, cdf_stride) \ 64 do { \ 65 aom_cdf_prob *cdf_ptr = (aom_cdf_prob *)cname; \ 66 int array_size = (int)sizeof(cname) / sizeof(aom_cdf_prob); \ 67 int num_cdfs = array_size / cdf_stride; \ 68 reset_cdf_symbol_counter(cdf_ptr, num_cdfs, cdf_stride, nsymbs); \ 69 } while (0) 70 71 static inline void reset_nmv_counter(nmv_context *nmv) { 72 RESET_CDF_COUNTER(nmv->joints_cdf, 4); 73 for (int i = 0; i < 2; i++) { 74 RESET_CDF_COUNTER(nmv->comps[i].classes_cdf, MV_CLASSES); 75 RESET_CDF_COUNTER(nmv->comps[i].class0_fp_cdf, MV_FP_SIZE); 76 RESET_CDF_COUNTER(nmv->comps[i].fp_cdf, MV_FP_SIZE); 77 RESET_CDF_COUNTER(nmv->comps[i].sign_cdf, 2); 78 RESET_CDF_COUNTER(nmv->comps[i].class0_hp_cdf, 2); 79 RESET_CDF_COUNTER(nmv->comps[i].hp_cdf, 2); 80 RESET_CDF_COUNTER(nmv->comps[i].class0_cdf, CLASS0_SIZE); 81 RESET_CDF_COUNTER(nmv->comps[i].bits_cdf, 2); 82 } 83 } 84 85 void av1_reset_cdf_symbol_counters(FRAME_CONTEXT *fc) { 86 RESET_CDF_COUNTER(fc->txb_skip_cdf, 2); 87 RESET_CDF_COUNTER(fc->eob_extra_cdf, 2); 88 RESET_CDF_COUNTER(fc->dc_sign_cdf, 2); 89 RESET_CDF_COUNTER(fc->eob_flag_cdf16, 5); 90 RESET_CDF_COUNTER(fc->eob_flag_cdf32, 6); 91 RESET_CDF_COUNTER(fc->eob_flag_cdf64, 7); 92 RESET_CDF_COUNTER(fc->eob_flag_cdf128, 8); 93 RESET_CDF_COUNTER(fc->eob_flag_cdf256, 9); 94 RESET_CDF_COUNTER(fc->eob_flag_cdf512, 10); 95 RESET_CDF_COUNTER(fc->eob_flag_cdf1024, 11); 96 RESET_CDF_COUNTER(fc->coeff_base_eob_cdf, 3); 97 RESET_CDF_COUNTER(fc->coeff_base_cdf, 4); 98 RESET_CDF_COUNTER(fc->coeff_br_cdf, BR_CDF_SIZE); 99 RESET_CDF_COUNTER(fc->newmv_cdf, 2); 100 RESET_CDF_COUNTER(fc->zeromv_cdf, 2); 101 RESET_CDF_COUNTER(fc->refmv_cdf, 2); 102 RESET_CDF_COUNTER(fc->drl_cdf, 2); 103 RESET_CDF_COUNTER(fc->inter_compound_mode_cdf, INTER_COMPOUND_MODES); 104 RESET_CDF_COUNTER(fc->compound_type_cdf, MASKED_COMPOUND_TYPES); 105 RESET_CDF_COUNTER(fc->wedge_idx_cdf, 16); 106 RESET_CDF_COUNTER(fc->interintra_cdf, 2); 107 RESET_CDF_COUNTER(fc->wedge_interintra_cdf, 2); 108 RESET_CDF_COUNTER(fc->interintra_mode_cdf, INTERINTRA_MODES); 109 RESET_CDF_COUNTER(fc->motion_mode_cdf, MOTION_MODES); 110 RESET_CDF_COUNTER(fc->obmc_cdf, 2); 111 RESET_CDF_COUNTER(fc->palette_y_size_cdf, PALETTE_SIZES); 112 RESET_CDF_COUNTER(fc->palette_uv_size_cdf, PALETTE_SIZES); 113 for (int j = 0; j < PALETTE_SIZES; j++) { 114 int nsymbs = j + PALETTE_MIN_SIZE; 115 RESET_CDF_COUNTER_STRIDE(fc->palette_y_color_index_cdf[j], nsymbs, 116 CDF_SIZE(PALETTE_COLORS)); 117 RESET_CDF_COUNTER_STRIDE(fc->palette_uv_color_index_cdf[j], nsymbs, 118 CDF_SIZE(PALETTE_COLORS)); 119 } 120 RESET_CDF_COUNTER(fc->palette_y_mode_cdf, 2); 121 RESET_CDF_COUNTER(fc->palette_uv_mode_cdf, 2); 122 RESET_CDF_COUNTER(fc->comp_inter_cdf, 2); 123 RESET_CDF_COUNTER(fc->single_ref_cdf, 2); 124 RESET_CDF_COUNTER(fc->comp_ref_type_cdf, 2); 125 RESET_CDF_COUNTER(fc->uni_comp_ref_cdf, 2); 126 RESET_CDF_COUNTER(fc->comp_ref_cdf, 2); 127 RESET_CDF_COUNTER(fc->comp_bwdref_cdf, 2); 128 RESET_CDF_COUNTER(fc->txfm_partition_cdf, 2); 129 RESET_CDF_COUNTER(fc->compound_index_cdf, 2); 130 RESET_CDF_COUNTER(fc->comp_group_idx_cdf, 2); 131 RESET_CDF_COUNTER(fc->skip_mode_cdfs, 2); 132 RESET_CDF_COUNTER(fc->skip_txfm_cdfs, 2); 133 RESET_CDF_COUNTER(fc->intra_inter_cdf, 2); 134 reset_nmv_counter(&fc->nmvc); 135 reset_nmv_counter(&fc->ndvc); 136 RESET_CDF_COUNTER(fc->intrabc_cdf, 2); 137 RESET_CDF_COUNTER(fc->seg.pred_cdf, 2); 138 RESET_CDF_COUNTER(fc->seg.spatial_pred_seg_cdf, MAX_SEGMENTS); 139 RESET_CDF_COUNTER(fc->filter_intra_cdfs, 2); 140 RESET_CDF_COUNTER(fc->filter_intra_mode_cdf, FILTER_INTRA_MODES); 141 RESET_CDF_COUNTER(fc->switchable_restore_cdf, RESTORE_SWITCHABLE_TYPES); 142 RESET_CDF_COUNTER(fc->wiener_restore_cdf, 2); 143 RESET_CDF_COUNTER(fc->sgrproj_restore_cdf, 2); 144 RESET_CDF_COUNTER(fc->y_mode_cdf, INTRA_MODES); 145 RESET_CDF_COUNTER_STRIDE(fc->uv_mode_cdf[0], UV_INTRA_MODES - 1, 146 CDF_SIZE(UV_INTRA_MODES)); 147 RESET_CDF_COUNTER(fc->uv_mode_cdf[1], UV_INTRA_MODES); 148 for (int i = 0; i < PARTITION_CONTEXTS; i++) { 149 if (i < 4) { 150 RESET_CDF_COUNTER_STRIDE(fc->partition_cdf[i], 4, CDF_SIZE(10)); 151 } else if (i < 16) { 152 RESET_CDF_COUNTER(fc->partition_cdf[i], 10); 153 } else { 154 RESET_CDF_COUNTER_STRIDE(fc->partition_cdf[i], 8, CDF_SIZE(10)); 155 } 156 } 157 RESET_CDF_COUNTER(fc->switchable_interp_cdf, SWITCHABLE_FILTERS); 158 RESET_CDF_COUNTER(fc->kf_y_cdf, INTRA_MODES); 159 RESET_CDF_COUNTER(fc->angle_delta_cdf, 2 * MAX_ANGLE_DELTA + 1); 160 RESET_CDF_COUNTER_STRIDE(fc->tx_size_cdf[0], MAX_TX_DEPTH, 161 CDF_SIZE(MAX_TX_DEPTH + 1)); 162 RESET_CDF_COUNTER(fc->tx_size_cdf[1], MAX_TX_DEPTH + 1); 163 RESET_CDF_COUNTER(fc->tx_size_cdf[2], MAX_TX_DEPTH + 1); 164 RESET_CDF_COUNTER(fc->tx_size_cdf[3], MAX_TX_DEPTH + 1); 165 RESET_CDF_COUNTER(fc->delta_q_cdf, DELTA_Q_PROBS + 1); 166 RESET_CDF_COUNTER(fc->delta_lf_cdf, DELTA_LF_PROBS + 1); 167 for (int i = 0; i < FRAME_LF_COUNT; i++) { 168 RESET_CDF_COUNTER(fc->delta_lf_multi_cdf[i], DELTA_LF_PROBS + 1); 169 } 170 RESET_CDF_COUNTER_STRIDE(fc->intra_ext_tx_cdf[1], 7, CDF_SIZE(TX_TYPES)); 171 RESET_CDF_COUNTER_STRIDE(fc->intra_ext_tx_cdf[2], 5, CDF_SIZE(TX_TYPES)); 172 RESET_CDF_COUNTER_STRIDE(fc->inter_ext_tx_cdf[1], 16, CDF_SIZE(TX_TYPES)); 173 RESET_CDF_COUNTER_STRIDE(fc->inter_ext_tx_cdf[2], 12, CDF_SIZE(TX_TYPES)); 174 RESET_CDF_COUNTER_STRIDE(fc->inter_ext_tx_cdf[3], 2, CDF_SIZE(TX_TYPES)); 175 RESET_CDF_COUNTER(fc->cfl_sign_cdf, CFL_JOINT_SIGNS); 176 RESET_CDF_COUNTER(fc->cfl_alpha_cdf, CFL_ALPHABET_SIZE); 177 }