Line data Source code
1 : /*
2 : * Copyright (c) 2017, 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 "EncodeTxbRef_C.h"
13 : #include "EbCommonUtils.h"
14 : const int8_t av1_nz_map_ctx_offset_4x4[16] = {
15 : 0,
16 : 1,
17 : 6,
18 : 6,
19 : 1,
20 : 6,
21 : 6,
22 : 21,
23 : 6,
24 : 6,
25 : 21,
26 : 21,
27 : 6,
28 : 21,
29 : 21,
30 : 21,
31 : };
32 :
33 : const int8_t av1_nz_map_ctx_offset_8x8[64] = {
34 : 0, 1, 6, 6, 21, 21, 21, 21, 1, 6, 6, 21, 21, 21, 21, 21,
35 : 6, 6, 21, 21, 21, 21, 21, 21, 6, 21, 21, 21, 21, 21, 21, 21,
36 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
37 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
38 : };
39 :
40 : const int8_t av1_nz_map_ctx_offset_16x16[256] = {
41 : 0, 1, 6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 6, 6,
42 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 6, 6, 21, 21, 21, 21,
43 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 6, 21, 21, 21, 21, 21, 21, 21, 21,
44 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
45 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
46 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
47 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
48 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
49 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
50 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
51 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
52 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
53 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
54 : 21, 21, 21, 21, 21, 21, 21, 21, 21,
55 : };
56 :
57 : const int8_t av1_nz_map_ctx_offset_32x32[1024] = {
58 : 0, 1, 6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
59 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 6, 6, 21, 21, 21,
60 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
61 : 21, 21, 21, 21, 21, 21, 21, 6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
62 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
63 : 21, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
64 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
65 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
66 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
67 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
68 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
69 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
70 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
71 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
72 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
73 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
74 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
75 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
76 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
77 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
78 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
79 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
80 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
81 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
82 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
83 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
84 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
85 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
86 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
87 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
88 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
89 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
90 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
91 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
92 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
93 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
94 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
95 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
96 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
97 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
98 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
99 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
100 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
101 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
102 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
103 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
104 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
105 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
106 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
107 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
108 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
109 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
110 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
111 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
112 : };
113 :
114 : const int8_t av1_nz_map_ctx_offset_8x4[32] = {
115 : 0, 16, 6, 6, 21, 21, 21, 21, 16, 16, 6, 21, 21, 21, 21, 21,
116 : 16, 16, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21,
117 : };
118 :
119 : const int8_t av1_nz_map_ctx_offset_8x16[128] = {
120 : 0, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 21,
121 : 21, 21, 21, 21, 21, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
122 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
123 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
124 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
125 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
126 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
127 : };
128 :
129 : const int8_t av1_nz_map_ctx_offset_16x8[128] = {
130 : 0, 16, 6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 6,
131 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21,
132 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21,
133 : 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
134 : 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
135 : 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16,
136 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
137 : };
138 :
139 : const int8_t av1_nz_map_ctx_offset_16x32[512] = {
140 : 0, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
141 : 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 21, 21, 21, 21,
142 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 6, 21, 21, 21, 21, 21, 21, 21, 21,
143 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
144 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
145 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
146 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
147 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
148 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
149 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
150 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
151 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
152 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
153 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
154 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
155 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
156 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
157 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
158 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
159 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
160 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
161 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
162 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
163 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
164 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
165 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
166 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
167 : };
168 :
169 : const int8_t av1_nz_map_ctx_offset_32x16[512] = {
170 : 0, 16, 6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
171 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 6, 21, 21, 21,
172 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
173 : 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
174 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
175 : 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
176 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21,
177 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
178 : 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21,
179 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
180 : 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
181 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21,
182 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
183 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21,
184 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
185 : 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
186 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21,
187 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
188 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21,
189 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
190 : 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
191 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16,
192 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
193 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21,
194 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
195 : 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
196 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
197 : };
198 :
199 : const int8_t av1_nz_map_ctx_offset_32x64[1024] = {
200 : 0, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
201 : 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
202 : 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
203 : 11, 11, 11, 11, 11, 11, 11, 6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
204 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
205 : 21, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
206 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
207 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
208 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
209 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
210 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
211 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
212 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
213 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
214 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
215 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
216 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
217 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
218 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
219 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
220 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
221 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
222 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
223 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
224 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
225 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
226 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
227 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
228 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
229 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
230 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
231 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
232 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
233 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
234 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
235 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
236 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
237 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
238 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
239 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
240 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
241 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
242 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
243 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
244 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
245 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
246 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
247 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
248 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
249 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
250 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
251 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
252 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
253 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
254 : };
255 :
256 : const int8_t av1_nz_map_ctx_offset_64x32[1024] = {
257 : 0, 16, 6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
258 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 6, 21, 21, 21,
259 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
260 : 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
261 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
262 : 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
263 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21,
264 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
265 : 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21,
266 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
267 : 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
268 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21,
269 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
270 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21,
271 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
272 : 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
273 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21,
274 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
275 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21,
276 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
277 : 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
278 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16,
279 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
280 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21,
281 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
282 : 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
283 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16,
284 : 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
285 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21,
286 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
287 : 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
288 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
289 : 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
290 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21,
291 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
292 : 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
293 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
294 : 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
295 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21,
296 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
297 : 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21,
298 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
299 : 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
300 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21,
301 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
302 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21,
303 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
304 : 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
305 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21,
306 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
307 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21,
308 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
309 : 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
310 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
311 : };
312 :
313 : const int8_t av1_nz_map_ctx_offset_4x16[64] = {
314 : 0, 11, 11, 11, 11, 11, 11, 11, 6, 6, 21, 21, 6, 21, 21, 21,
315 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
316 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
317 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
318 : };
319 :
320 : const int8_t av1_nz_map_ctx_offset_16x4[64] = {
321 : 0, 16, 6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
322 : 16, 16, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
323 : 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
324 : 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
325 : };
326 :
327 : const int8_t av1_nz_map_ctx_offset_8x32[256] = {
328 : 0, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 21,
329 : 21, 21, 21, 21, 21, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
330 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
331 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
332 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
333 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
334 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
335 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
336 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
337 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
338 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
339 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
340 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
341 : 21, 21, 21, 21, 21, 21, 21, 21, 21,
342 : };
343 :
344 : const int8_t av1_nz_map_ctx_offset_32x8[256] = {
345 : 0, 16, 6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
346 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 6, 21, 21, 21,
347 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
348 : 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
349 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
350 : 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
351 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21,
352 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
353 : 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21,
354 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
355 : 21, 21, 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
356 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 16, 16, 21, 21,
357 : 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
358 : 21, 21, 21, 21, 21, 21, 21, 21, 21,
359 : };
360 :
361 : const int8_t* av1_nz_map_ctx_offset[19] = {
362 : av1_nz_map_ctx_offset_4x4, // TX_4x4
363 : av1_nz_map_ctx_offset_8x8, // TX_8x8
364 : av1_nz_map_ctx_offset_16x16, // TX_16x16
365 : av1_nz_map_ctx_offset_32x32, // TX_32x32
366 : av1_nz_map_ctx_offset_32x32, // TX_32x32
367 : av1_nz_map_ctx_offset_4x16, // TX_4x8
368 : av1_nz_map_ctx_offset_8x4, // TX_8x4
369 : av1_nz_map_ctx_offset_8x32, // TX_8x16
370 : av1_nz_map_ctx_offset_16x8, // TX_16x8
371 : av1_nz_map_ctx_offset_16x32, // TX_16x32
372 : av1_nz_map_ctx_offset_32x16, // TX_32x16
373 : av1_nz_map_ctx_offset_32x64, // TX_32x64
374 : av1_nz_map_ctx_offset_64x32, // TX_64x32
375 : av1_nz_map_ctx_offset_4x16, // TX_4x16
376 : av1_nz_map_ctx_offset_16x4, // TX_16x4
377 : av1_nz_map_ctx_offset_8x32, // TX_8x32
378 : av1_nz_map_ctx_offset_32x8, // TX_32x8
379 : av1_nz_map_ctx_offset_16x32, // TX_16x64
380 : av1_nz_map_ctx_offset_64x32, // TX_64x16
381 : };
382 :
383 : static const uint8_t clip_max3[256] = {
384 : 0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
385 : 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
386 : 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
387 : 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
388 : 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
389 : 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
390 : 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
391 : 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
392 : 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
393 : 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
394 : 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 };
395 :
396 : static AOM_FORCE_INLINE int get_nz_mag(const uint8_t* const levels,
397 : const int bwl, const TxClass tx_class) {
398 : int mag;
399 :
400 : // Note: AOMMIN(level, 3) is useless for decoder since level < 3.
401 0 : mag = clip_max3[levels[1]]; // { 0, 1 }
402 0 : mag += clip_max3[levels[(1 << bwl) + TX_PAD_HOR]]; // { 1, 0 }
403 :
404 0 : if (tx_class == TX_CLASS_2D) {
405 0 : mag += clip_max3[levels[(1 << bwl) + TX_PAD_HOR + 1]]; // { 1, 1 }
406 0 : mag += clip_max3[levels[2]]; // { 0, 2 }
407 0 : mag +=
408 0 : clip_max3[levels[(2 << bwl) + (2 << TX_PAD_HOR_LOG2)]]; // { 2, 0 }
409 : }
410 0 : else if (tx_class == TX_CLASS_VERT) {
411 0 : mag +=
412 0 : clip_max3[levels[(2 << bwl) + (2 << TX_PAD_HOR_LOG2)]]; // { 2, 0 }
413 0 : mag +=
414 0 : clip_max3[levels[(3 << bwl) + (3 << TX_PAD_HOR_LOG2)]]; // { 3, 0 }
415 0 : mag +=
416 0 : clip_max3[levels[(4 << bwl) + (4 << TX_PAD_HOR_LOG2)]]; // { 4, 0 }
417 : }
418 : else {
419 0 : mag += clip_max3[levels[2]]; // { 0, 2 }
420 0 : mag += clip_max3[levels[3]]; // { 0, 3 }
421 0 : mag += clip_max3[levels[4]]; // { 0, 4 }
422 : }
423 :
424 0 : return mag;
425 : }
426 :
427 : #define SIG_COEF_CONTEXTS_2D 26
428 : #define NZ_MAP_CTX_0 SIG_COEF_CONTEXTS_2D
429 : #define NZ_MAP_CTX_5 (NZ_MAP_CTX_0 + 5)
430 : #define NZ_MAP_CTX_10 (NZ_MAP_CTX_0 + 10)
431 :
432 : static const int nz_map_ctx_offset_1d[32] = {
433 : NZ_MAP_CTX_0, NZ_MAP_CTX_5, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10,
434 : NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10,
435 : NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10,
436 : NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10,
437 : NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10,
438 : NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10,
439 : NZ_MAP_CTX_10, NZ_MAP_CTX_10,
440 : };
441 :
442 : static AOM_FORCE_INLINE int get_nz_map_ctx_from_stats(
443 : const int stats,
444 : const int coeff_idx, // raster order
445 : const int bwl, const TxSize tx_size, const TxClass tx_class) {
446 : // tx_class == 0(TX_CLASS_2D)
447 0 : if ((tx_class | coeff_idx) == 0)
448 0 : return 0;
449 0 : int ctx = (stats + 1) >> 1;
450 0 : ctx = AOMMIN(ctx, 4);
451 0 : switch (tx_class) {
452 0 : case TX_CLASS_2D: {
453 : // This is the algorithm to generate av1_nz_map_ctx_offset[][]
454 : // const int width = tx_size_wide[tx_size];
455 : // const int height = tx_size_high[tx_size];
456 : // if (width < height) {
457 : // if (row < 2) return 11 + ctx;
458 : // } else if (width > height) {
459 : // if (col < 2) return 16 + ctx;
460 : // }
461 : // if (row + col < 2) return ctx + 1;
462 : // if (row + col < 4) return 5 + ctx + 1;
463 : // return 21 + ctx;
464 0 : return ctx + av1_nz_map_ctx_offset[tx_size][coeff_idx];
465 : }
466 0 : case TX_CLASS_HORIZ: {
467 0 : const int row = coeff_idx >> bwl;
468 0 : const int col = coeff_idx - (row << bwl);
469 0 : return ctx + nz_map_ctx_offset_1d[col];
470 : }
471 0 : case TX_CLASS_VERT: {
472 0 : const int row = coeff_idx >> bwl;
473 0 : return ctx + nz_map_ctx_offset_1d[row];
474 : }
475 0 : default: break;
476 : }
477 0 : return 0;
478 : }
479 :
480 0 : static INLINE int get_nz_map_ctx(const uint8_t* const levels,
481 : const int coeff_idx, const int bwl,
482 : const int height, const int scan_idx,
483 : const int is_eob, const TxSize tx_size,
484 : const TxClass tx_class) {
485 0 : if (is_eob) {
486 0 : if (scan_idx == 0)
487 0 : return 0;
488 0 : if (scan_idx <= (height << bwl) / 8)
489 0 : return 1;
490 0 : if (scan_idx <= (height << bwl) / 4)
491 0 : return 2;
492 0 : return 3;
493 : }
494 : const int stats =
495 0 : get_nz_mag(levels + get_padded_idx(coeff_idx, bwl), bwl, tx_class);
496 0 : return get_nz_map_ctx_from_stats(stats, coeff_idx, bwl, tx_size, tx_class);
497 : }
498 :
499 0 : void eb_av1_get_nz_map_contexts_c(const uint8_t* const levels,
500 : const int16_t* const scan,
501 : const uint16_t eob,
502 : const TxSize tx_size,
503 : const TxClass tx_class,
504 : int8_t* const coeff_contexts) {
505 0 : const int bwl = get_txb_bwl(tx_size);
506 0 : const int height = get_txb_high(tx_size);
507 0 : for (int i = 0; i < eob; ++i) {
508 0 : const int pos = scan[i];
509 0 : coeff_contexts[pos] = get_nz_map_ctx(
510 0 : levels, pos, bwl, height, i, i == eob - 1, tx_size, tx_class);
511 : }
512 0 : }
|
