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 
get_q_ctx(int q)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 
av1_default_coef_probs(AV1_COMMON * cm)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 
reset_cdf_symbol_counter(aom_cdf_prob * cdf_ptr,int num_cdfs,int cdf_stride,int nsymbs)53 static AOM_INLINE void reset_cdf_symbol_counter(aom_cdf_prob *cdf_ptr,
54                                                 int num_cdfs, int cdf_stride,
55                                                 int nsymbs) {
56   for (int i = 0; i < num_cdfs; i++) {
57     cdf_ptr[i * cdf_stride + nsymbs] = 0;
58   }
59 }
60 
61 #define RESET_CDF_COUNTER(cname, nsymbs) \
62   RESET_CDF_COUNTER_STRIDE(cname, nsymbs, CDF_SIZE(nsymbs))
63 
64 #define RESET_CDF_COUNTER_STRIDE(cname, nsymbs, cdf_stride)          \
65   do {                                                               \
66     aom_cdf_prob *cdf_ptr = (aom_cdf_prob *)cname;                   \
67     int array_size = (int)sizeof(cname) / sizeof(aom_cdf_prob);      \
68     int num_cdfs = array_size / cdf_stride;                          \
69     reset_cdf_symbol_counter(cdf_ptr, num_cdfs, cdf_stride, nsymbs); \
70   } while (0)
71 
reset_nmv_counter(nmv_context * nmv)72 static AOM_INLINE void reset_nmv_counter(nmv_context *nmv) {
73   RESET_CDF_COUNTER(nmv->joints_cdf, 4);
74   for (int i = 0; i < 2; i++) {
75     RESET_CDF_COUNTER(nmv->comps[i].classes_cdf, MV_CLASSES);
76     RESET_CDF_COUNTER(nmv->comps[i].class0_fp_cdf, MV_FP_SIZE);
77     RESET_CDF_COUNTER(nmv->comps[i].fp_cdf, MV_FP_SIZE);
78     RESET_CDF_COUNTER(nmv->comps[i].sign_cdf, 2);
79     RESET_CDF_COUNTER(nmv->comps[i].class0_hp_cdf, 2);
80     RESET_CDF_COUNTER(nmv->comps[i].hp_cdf, 2);
81     RESET_CDF_COUNTER(nmv->comps[i].class0_cdf, CLASS0_SIZE);
82     RESET_CDF_COUNTER(nmv->comps[i].bits_cdf, 2);
83   }
84 }
85 
av1_reset_cdf_symbol_counters(FRAME_CONTEXT * fc)86 void av1_reset_cdf_symbol_counters(FRAME_CONTEXT *fc) {
87   RESET_CDF_COUNTER(fc->txb_skip_cdf, 2);
88   RESET_CDF_COUNTER(fc->eob_extra_cdf, 2);
89   RESET_CDF_COUNTER(fc->dc_sign_cdf, 2);
90   RESET_CDF_COUNTER(fc->eob_flag_cdf16, 5);
91   RESET_CDF_COUNTER(fc->eob_flag_cdf32, 6);
92   RESET_CDF_COUNTER(fc->eob_flag_cdf64, 7);
93   RESET_CDF_COUNTER(fc->eob_flag_cdf128, 8);
94   RESET_CDF_COUNTER(fc->eob_flag_cdf256, 9);
95   RESET_CDF_COUNTER(fc->eob_flag_cdf512, 10);
96   RESET_CDF_COUNTER(fc->eob_flag_cdf1024, 11);
97   RESET_CDF_COUNTER(fc->coeff_base_eob_cdf, 3);
98   RESET_CDF_COUNTER(fc->coeff_base_cdf, 4);
99   RESET_CDF_COUNTER(fc->coeff_br_cdf, BR_CDF_SIZE);
100   RESET_CDF_COUNTER(fc->newmv_cdf, 2);
101   RESET_CDF_COUNTER(fc->zeromv_cdf, 2);
102   RESET_CDF_COUNTER(fc->refmv_cdf, 2);
103   RESET_CDF_COUNTER(fc->drl_cdf, 2);
104   RESET_CDF_COUNTER(fc->inter_compound_mode_cdf, INTER_COMPOUND_MODES);
105   RESET_CDF_COUNTER(fc->compound_type_cdf, MASKED_COMPOUND_TYPES);
106   RESET_CDF_COUNTER(fc->wedge_idx_cdf, 16);
107   RESET_CDF_COUNTER(fc->interintra_cdf, 2);
108   RESET_CDF_COUNTER(fc->wedge_interintra_cdf, 2);
109   RESET_CDF_COUNTER(fc->interintra_mode_cdf, INTERINTRA_MODES);
110   RESET_CDF_COUNTER(fc->motion_mode_cdf, MOTION_MODES);
111   RESET_CDF_COUNTER(fc->obmc_cdf, 2);
112   RESET_CDF_COUNTER(fc->palette_y_size_cdf, PALETTE_SIZES);
113   RESET_CDF_COUNTER(fc->palette_uv_size_cdf, PALETTE_SIZES);
114   for (int j = 0; j < PALETTE_SIZES; j++) {
115     int nsymbs = j + PALETTE_MIN_SIZE;
116     RESET_CDF_COUNTER_STRIDE(fc->palette_y_color_index_cdf[j], nsymbs,
117                              CDF_SIZE(PALETTE_COLORS));
118     RESET_CDF_COUNTER_STRIDE(fc->palette_uv_color_index_cdf[j], nsymbs,
119                              CDF_SIZE(PALETTE_COLORS));
120   }
121   RESET_CDF_COUNTER(fc->palette_y_mode_cdf, 2);
122   RESET_CDF_COUNTER(fc->palette_uv_mode_cdf, 2);
123   RESET_CDF_COUNTER(fc->comp_inter_cdf, 2);
124   RESET_CDF_COUNTER(fc->single_ref_cdf, 2);
125   RESET_CDF_COUNTER(fc->comp_ref_type_cdf, 2);
126   RESET_CDF_COUNTER(fc->uni_comp_ref_cdf, 2);
127   RESET_CDF_COUNTER(fc->comp_ref_cdf, 2);
128   RESET_CDF_COUNTER(fc->comp_bwdref_cdf, 2);
129   RESET_CDF_COUNTER(fc->txfm_partition_cdf, 2);
130   RESET_CDF_COUNTER(fc->compound_index_cdf, 2);
131   RESET_CDF_COUNTER(fc->comp_group_idx_cdf, 2);
132   RESET_CDF_COUNTER(fc->skip_mode_cdfs, 2);
133   RESET_CDF_COUNTER(fc->skip_txfm_cdfs, 2);
134   RESET_CDF_COUNTER(fc->intra_inter_cdf, 2);
135   reset_nmv_counter(&fc->nmvc);
136   reset_nmv_counter(&fc->ndvc);
137   RESET_CDF_COUNTER(fc->intrabc_cdf, 2);
138   RESET_CDF_COUNTER(fc->seg.tree_cdf, MAX_SEGMENTS);
139   RESET_CDF_COUNTER(fc->seg.pred_cdf, 2);
140   RESET_CDF_COUNTER(fc->seg.spatial_pred_seg_cdf, MAX_SEGMENTS);
141   RESET_CDF_COUNTER(fc->filter_intra_cdfs, 2);
142   RESET_CDF_COUNTER(fc->filter_intra_mode_cdf, FILTER_INTRA_MODES);
143   RESET_CDF_COUNTER(fc->switchable_restore_cdf, RESTORE_SWITCHABLE_TYPES);
144   RESET_CDF_COUNTER(fc->wiener_restore_cdf, 2);
145   RESET_CDF_COUNTER(fc->sgrproj_restore_cdf, 2);
146   RESET_CDF_COUNTER(fc->y_mode_cdf, INTRA_MODES);
147   RESET_CDF_COUNTER_STRIDE(fc->uv_mode_cdf[0], UV_INTRA_MODES - 1,
148                            CDF_SIZE(UV_INTRA_MODES));
149   RESET_CDF_COUNTER(fc->uv_mode_cdf[1], UV_INTRA_MODES);
150   for (int i = 0; i < PARTITION_CONTEXTS; i++) {
151     if (i < 4) {
152       RESET_CDF_COUNTER_STRIDE(fc->partition_cdf[i], 4, CDF_SIZE(10));
153     } else if (i < 16) {
154       RESET_CDF_COUNTER(fc->partition_cdf[i], 10);
155     } else {
156       RESET_CDF_COUNTER_STRIDE(fc->partition_cdf[i], 8, CDF_SIZE(10));
157     }
158   }
159   RESET_CDF_COUNTER(fc->switchable_interp_cdf, SWITCHABLE_FILTERS);
160   RESET_CDF_COUNTER(fc->kf_y_cdf, INTRA_MODES);
161   RESET_CDF_COUNTER(fc->angle_delta_cdf, 2 * MAX_ANGLE_DELTA + 1);
162   RESET_CDF_COUNTER_STRIDE(fc->tx_size_cdf[0], MAX_TX_DEPTH,
163                            CDF_SIZE(MAX_TX_DEPTH + 1));
164   RESET_CDF_COUNTER(fc->tx_size_cdf[1], MAX_TX_DEPTH + 1);
165   RESET_CDF_COUNTER(fc->tx_size_cdf[2], MAX_TX_DEPTH + 1);
166   RESET_CDF_COUNTER(fc->tx_size_cdf[3], MAX_TX_DEPTH + 1);
167   RESET_CDF_COUNTER(fc->delta_q_cdf, DELTA_Q_PROBS + 1);
168   RESET_CDF_COUNTER(fc->delta_lf_cdf, DELTA_LF_PROBS + 1);
169   for (int i = 0; i < FRAME_LF_COUNT; i++) {
170     RESET_CDF_COUNTER(fc->delta_lf_multi_cdf[i], DELTA_LF_PROBS + 1);
171   }
172   RESET_CDF_COUNTER_STRIDE(fc->intra_ext_tx_cdf[1], 7, CDF_SIZE(TX_TYPES));
173   RESET_CDF_COUNTER_STRIDE(fc->intra_ext_tx_cdf[2], 5, CDF_SIZE(TX_TYPES));
174   RESET_CDF_COUNTER_STRIDE(fc->inter_ext_tx_cdf[1], 16, CDF_SIZE(TX_TYPES));
175   RESET_CDF_COUNTER_STRIDE(fc->inter_ext_tx_cdf[2], 12, CDF_SIZE(TX_TYPES));
176   RESET_CDF_COUNTER_STRIDE(fc->inter_ext_tx_cdf[3], 2, CDF_SIZE(TX_TYPES));
177   RESET_CDF_COUNTER(fc->cfl_sign_cdf, CFL_JOINT_SIGNS);
178   RESET_CDF_COUNTER(fc->cfl_alpha_cdf, CFL_ALPHABET_SIZE);
179 }
180