Statistics
| Branch: | Revision:

ffmpeg / libavcodec / h264_cabac.c @ 855a1ba5

History | View | Annotate | Download (71 KB)

1
/*
2
 * H.26L/H.264/AVC/JVT/14496-10/... cabac decoding
3
 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4
 *
5
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
9
 * License as published by the Free Software Foundation; either
10
 * version 2.1 of the License, or (at your option) any later version.
11
 *
12
 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16
 *
17
 * You should have received a copy of the GNU Lesser General Public
18
 * License along with FFmpeg; if not, write to the Free Software
19
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 */
21

    
22
/**
23
 * @file libavcodec/h264_cabac.c
24
 * H.264 / AVC / MPEG4 part10 cabac decoding.
25
 * @author Michael Niedermayer <michaelni@gmx.at>
26
 */
27

    
28
#define CABAC 1
29

    
30
#include "internal.h"
31
#include "dsputil.h"
32
#include "avcodec.h"
33
#include "h264.h"
34
#include "h264data.h"
35
#include "h264_mvpred.h"
36
#include "golomb.h"
37

    
38
#include "cabac.h"
39
#if ARCH_X86
40
#include "x86/h264_i386.h"
41
#endif
42

    
43
//#undef NDEBUG
44
#include <assert.h>
45

    
46
/* Cabac pre state table */
47

    
48
static const int8_t cabac_context_init_I[460][2] =
49
{
50
    /* 0 - 10 */
51
    { 20, -15 }, {  2, 54 },  {  3,  74 }, { 20, -15 },
52
    {  2,  54 }, {  3, 74 },  { -28,127 }, { -23, 104 },
53
    { -6,  53 }, { -1, 54 },  {  7,  51 },
54

    
55
    /* 11 - 23 unsused for I */
56
    { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },
57
    { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },
58
    { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },
59
    { 0, 0 },
60

    
61
    /* 24- 39 */
62
    { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },
63
    { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },
64
    { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },
65
    { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },
66

    
67
    /* 40 - 53 */
68
    { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },
69
    { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },
70
    { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },
71
    { 0, 0 },    { 0, 0 },
72

    
73
    /* 54 - 59 */
74
    { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },
75
    { 0, 0 },    { 0, 0 },
76

    
77
    /* 60 - 69 */
78
    { 0, 41 },   { 0, 63 },   { 0, 63 },     { 0, 63 },
79
    { -9, 83 },  { 4, 86 },   { 0, 97 },     { -7, 72 },
80
    { 13, 41 },  { 3, 62 },
81

    
82
    /* 70 -> 87 */
83
    { 0, 11 },   { 1, 55 },   { 0, 69 },     { -17, 127 },
84
    { -13, 102 },{ 0, 82 },   { -7, 74 },    { -21, 107 },
85
    { -27, 127 },{ -31, 127 },{ -24, 127 },  { -18, 95 },
86
    { -27, 127 },{ -21, 114 },{ -30, 127 },  { -17, 123 },
87
    { -12, 115 },{ -16, 122 },
88

    
89
    /* 88 -> 104 */
90
    { -11, 115 },{ -12, 63 }, { -2, 68 },    { -15, 84 },
91
    { -13, 104 },{ -3, 70 },  { -8, 93 },    { -10, 90 },
92
    { -30, 127 },{ -1, 74 },  { -6, 97 },    { -7, 91 },
93
    { -20, 127 },{ -4, 56 },  { -5, 82 },    { -7, 76 },
94
    { -22, 125 },
95

    
96
    /* 105 -> 135 */
97
    { -7, 93 },  { -11, 87 }, { -3, 77 },    { -5, 71 },
98
    { -4, 63 },  { -4, 68 },  { -12, 84 },   { -7, 62 },
99
    { -7, 65 },  { 8, 61 },   { 5, 56 },     { -2, 66 },
100
    { 1, 64 },   { 0, 61 },   { -2, 78 },    { 1, 50 },
101
    { 7, 52 },   { 10, 35 },  { 0, 44 },     { 11, 38 },
102
    { 1, 45 },   { 0, 46 },   { 5, 44 },     { 31, 17 },
103
    { 1, 51 },   { 7, 50 },   { 28, 19 },    { 16, 33 },
104
    { 14, 62 },  { -13, 108 },{ -15, 100 },
105

    
106
    /* 136 -> 165 */
107
    { -13, 101 },{ -13, 91 }, { -12, 94 },   { -10, 88 },
108
    { -16, 84 }, { -10, 86 }, { -7, 83 },    { -13, 87 },
109
    { -19, 94 }, { 1, 70 },   { 0, 72 },     { -5, 74 },
110
    { 18, 59 },  { -8, 102 }, { -15, 100 },  { 0, 95 },
111
    { -4, 75 },  { 2, 72 },   { -11, 75 },   { -3, 71 },
112
    { 15, 46 },  { -13, 69 }, { 0, 62 },     { 0, 65 },
113
    { 21, 37 },  { -15, 72 }, { 9, 57 },     { 16, 54 },
114
    { 0, 62 },   { 12, 72 },
115

    
116
    /* 166 -> 196 */
117
    { 24, 0 },   { 15, 9 },   { 8, 25 },     { 13, 18 },
118
    { 15, 9 },   { 13, 19 },  { 10, 37 },    { 12, 18 },
119
    { 6, 29 },   { 20, 33 },  { 15, 30 },    { 4, 45 },
120
    { 1, 58 },   { 0, 62 },   { 7, 61 },     { 12, 38 },
121
    { 11, 45 },  { 15, 39 },  { 11, 42 },    { 13, 44 },
122
    { 16, 45 },  { 12, 41 },  { 10, 49 },    { 30, 34 },
123
    { 18, 42 },  { 10, 55 },  { 17, 51 },    { 17, 46 },
124
    { 0, 89 },   { 26, -19 }, { 22, -17 },
125

    
126
    /* 197 -> 226 */
127
    { 26, -17 }, { 30, -25 }, { 28, -20 },   { 33, -23 },
128
    { 37, -27 }, { 33, -23 }, { 40, -28 },   { 38, -17 },
129
    { 33, -11 }, { 40, -15 }, { 41, -6 },    { 38, 1 },
130
    { 41, 17 },  { 30, -6 },  { 27, 3 },     { 26, 22 },
131
    { 37, -16 }, { 35, -4 },  { 38, -8 },    { 38, -3 },
132
    { 37, 3 },   { 38, 5 },   { 42, 0 },     { 35, 16 },
133
    { 39, 22 },  { 14, 48 },  { 27, 37 },    { 21, 60 },
134
    { 12, 68 },  { 2, 97 },
135

    
136
    /* 227 -> 251 */
137
    { -3, 71 },  { -6, 42 },  { -5, 50 },    { -3, 54 },
138
    { -2, 62 },  { 0, 58 },   { 1, 63 },     { -2, 72 },
139
    { -1, 74 },  { -9, 91 },  { -5, 67 },    { -5, 27 },
140
    { -3, 39 },  { -2, 44 },  { 0, 46 },     { -16, 64 },
141
    { -8, 68 },  { -10, 78 }, { -6, 77 },    { -10, 86 },
142
    { -12, 92 }, { -15, 55 }, { -10, 60 },   { -6, 62 },
143
    { -4, 65 },
144

    
145
    /* 252 -> 275 */
146
    { -12, 73 }, { -8, 76 },  { -7, 80 },    { -9, 88 },
147
    { -17, 110 },{ -11, 97 }, { -20, 84 },   { -11, 79 },
148
    { -6, 73 },  { -4, 74 },  { -13, 86 },   { -13, 96 },
149
    { -11, 97 }, { -19, 117 },{ -8, 78 },    { -5, 33 },
150
    { -4, 48 },  { -2, 53 },  { -3, 62 },    { -13, 71 },
151
    { -10, 79 }, { -12, 86 }, { -13, 90 },   { -14, 97 },
152

    
153
    /* 276 a bit special (not used, bypass is used instead) */
154
    { 0, 0 },
155

    
156
    /* 277 -> 307 */
157
    { -6, 93 },  { -6, 84 },  { -8, 79 },    { 0, 66 },
158
    { -1, 71 },  { 0, 62 },   { -2, 60 },    { -2, 59 },
159
    { -5, 75 },  { -3, 62 },  { -4, 58 },    { -9, 66 },
160
    { -1, 79 },  { 0, 71 },   { 3, 68 },     { 10, 44 },
161
    { -7, 62 },  { 15, 36 },  { 14, 40 },    { 16, 27 },
162
    { 12, 29 },  { 1, 44 },   { 20, 36 },    { 18, 32 },
163
    { 5, 42 },   { 1, 48 },   { 10, 62 },    { 17, 46 },
164
    { 9, 64 },   { -12, 104 },{ -11, 97 },
165

    
166
    /* 308 -> 337 */
167
    { -16, 96 }, { -7, 88 },  { -8, 85 },    { -7, 85 },
168
    { -9, 85 },  { -13, 88 }, { 4, 66 },     { -3, 77 },
169
    { -3, 76 },  { -6, 76 },  { 10, 58 },    { -1, 76 },
170
    { -1, 83 },  { -7, 99 },  { -14, 95 },   { 2, 95 },
171
    { 0, 76 },   { -5, 74 },  { 0, 70 },     { -11, 75 },
172
    { 1, 68 },   { 0, 65 },   { -14, 73 },   { 3, 62 },
173
    { 4, 62 },   { -1, 68 },  { -13, 75 },   { 11, 55 },
174
    { 5, 64 },   { 12, 70 },
175

    
176
    /* 338 -> 368 */
177
    { 15, 6 },   { 6, 19 },   { 7, 16 },     { 12, 14 },
178
    { 18, 13 },  { 13, 11 },  { 13, 15 },    { 15, 16 },
179
    { 12, 23 },  { 13, 23 },  { 15, 20 },    { 14, 26 },
180
    { 14, 44 },  { 17, 40 },  { 17, 47 },    { 24, 17 },
181
    { 21, 21 },  { 25, 22 },  { 31, 27 },    { 22, 29 },
182
    { 19, 35 },  { 14, 50 },  { 10, 57 },    { 7, 63 },
183
    { -2, 77 },  { -4, 82 },  { -3, 94 },    { 9, 69 },
184
    { -12, 109 },{ 36, -35 }, { 36, -34 },
185

    
186
    /* 369 -> 398 */
187
    { 32, -26 }, { 37, -30 }, { 44, -32 },   { 34, -18 },
188
    { 34, -15 }, { 40, -15 }, { 33, -7 },    { 35, -5 },
189
    { 33, 0 },   { 38, 2 },   { 33, 13 },    { 23, 35 },
190
    { 13, 58 },  { 29, -3 },  { 26, 0 },     { 22, 30 },
191
    { 31, -7 },  { 35, -15 }, { 34, -3 },    { 34, 3 },
192
    { 36, -1 },  { 34, 5 },   { 32, 11 },    { 35, 5 },
193
    { 34, 12 },  { 39, 11 },  { 30, 29 },    { 34, 26 },
194
    { 29, 39 },  { 19, 66 },
195

    
196
    /* 399 -> 435 */
197
    {  31,  21 }, {  31,  31 }, {  25,  50 },
198
    { -17, 120 }, { -20, 112 }, { -18, 114 }, { -11,  85 },
199
    { -15,  92 }, { -14,  89 }, { -26,  71 }, { -15,  81 },
200
    { -14,  80 }, {   0,  68 }, { -14,  70 }, { -24,  56 },
201
    { -23,  68 }, { -24,  50 }, { -11,  74 }, {  23, -13 },
202
    {  26, -13 }, {  40, -15 }, {  49, -14 }, {  44,   3 },
203
    {  45,   6 }, {  44,  34 }, {  33,  54 }, {  19,  82 },
204
    {  -3,  75 }, {  -1,  23 }, {   1,  34 }, {   1,  43 },
205
    {   0,  54 }, {  -2,  55 }, {   0,  61 }, {   1,  64 },
206
    {   0,  68 }, {  -9,  92 },
207

    
208
    /* 436 -> 459 */
209
    { -14, 106 }, { -13,  97 }, { -15,  90 }, { -12,  90 },
210
    { -18,  88 }, { -10,  73 }, {  -9,  79 }, { -14,  86 },
211
    { -10,  73 }, { -10,  70 }, { -10,  69 }, {  -5,  66 },
212
    {  -9,  64 }, {  -5,  58 }, {   2,  59 }, {  21, -10 },
213
    {  24, -11 }, {  28,  -8 }, {  28,  -1 }, {  29,   3 },
214
    {  29,   9 }, {  35,  20 }, {  29,  36 }, {  14,  67 }
215
};
216

    
217
static const int8_t cabac_context_init_PB[3][460][2] =
218
{
219
    /* i_cabac_init_idc == 0 */
220
    {
221
        /* 0 - 10 */
222
        {  20, -15 }, {   2,  54 }, {   3,  74 }, {  20, -15 },
223
        {   2,  54 }, {   3,  74 }, { -28, 127 }, { -23, 104 },
224
        {  -6,  53 }, {  -1,  54 }, {   7,  51 },
225

    
226
        /* 11 - 23 */
227
        {  23,  33 }, {  23,   2 }, {  21,   0 }, {   1,   9 },
228
        {   0,  49 }, { -37, 118 }, {   5,  57 }, { -13,  78 },
229
        { -11,  65 }, {   1,  62 }, {  12,  49 }, {  -4,  73 },
230
        {  17,  50 },
231

    
232
        /* 24 - 39 */
233
        {  18,  64 }, {   9,  43 }, {  29,   0 }, {  26,  67 },
234
        {  16,  90 }, {   9, 104 }, { -46, 127 }, { -20, 104 },
235
        {   1,  67 }, { -13,  78 }, { -11,  65 }, {   1,  62 },
236
        {  -6,  86 }, { -17,  95 }, {  -6,  61 }, {   9,  45 },
237

    
238
        /* 40 - 53 */
239
        {  -3,  69 }, {  -6,  81 }, { -11,  96 }, {   6,  55 },
240
        {   7,  67 }, {  -5,  86 }, {   2,  88 }, {   0,  58 },
241
        {  -3,  76 }, { -10,  94 }, {   5,  54 }, {   4,  69 },
242
        {  -3,  81 }, {   0,  88 },
243

    
244
        /* 54 - 59 */
245
        {  -7,  67 }, {  -5,  74 }, {  -4,  74 }, {  -5,  80 },
246
        {  -7,  72 }, {   1,  58 },
247

    
248
        /* 60 - 69 */
249
        {   0,  41 }, {   0,  63 }, {   0,  63 }, { 0, 63 },
250
        {  -9,  83 }, {   4,  86 }, {   0,  97 }, { -7, 72 },
251
        {  13,  41 }, {   3,  62 },
252

    
253
        /* 70 - 87 */
254
        {   0,  45 }, {  -4,  78 }, {  -3,  96 }, { -27,  126 },
255
        { -28,  98 }, { -25, 101 }, { -23,  67 }, { -28,  82 },
256
        { -20,  94 }, { -16,  83 }, { -22, 110 }, { -21,  91 },
257
        { -18, 102 }, { -13,  93 }, { -29, 127 }, {  -7,  92 },
258
        {  -5,  89 }, {  -7,  96 }, { -13, 108 }, {  -3,  46 },
259
        {  -1,  65 }, {  -1,  57 }, {  -9,  93 }, {  -3,  74 },
260
        {  -9,  92 }, {  -8,  87 }, { -23, 126 }, {   5,  54 },
261
        {   6,  60 }, {   6,  59 }, {   6,  69 }, {  -1,  48 },
262
        {   0,  68 }, {  -4,  69 }, {  -8,  88 },
263

    
264
        /* 105 -> 165 */
265
        {  -2,  85 }, {  -6,  78 }, {  -1,  75 }, {  -7,  77 },
266
        {   2,  54 }, {   5,  50 }, {  -3,  68 }, {   1,  50 },
267
        {   6,  42 }, {  -4,  81 }, {   1,  63 }, {  -4,  70 },
268
        {   0,  67 }, {   2,  57 }, {  -2,  76 }, {  11,  35 },
269
        {   4,  64 }, {   1,  61 }, {  11,  35 }, {  18,  25 },
270
        {  12,  24 }, {  13,  29 }, {  13,  36 }, { -10,  93 },
271
        {  -7,  73 }, {  -2,  73 }, {  13,  46 }, {   9,  49 },
272
        {  -7, 100 }, {   9,  53 }, {   2,  53 }, {   5,  53 },
273
        {  -2,  61 }, {   0,  56 }, {   0,  56 }, { -13,  63 },
274
        {  -5,  60 }, {  -1,  62 }, {   4,  57 }, {  -6,  69 },
275
        {   4,  57 }, {  14,  39 }, {   4,  51 }, {  13,  68 },
276
        {   3,  64 }, {   1,  61 }, {   9,  63 }, {   7,  50 },
277
        {  16,  39 }, {   5,  44 }, {   4,  52 }, {  11,  48 },
278
        {  -5,  60 }, {  -1,  59 }, {   0,  59 }, {  22,  33 },
279
        {   5,  44 }, {  14,  43 }, {  -1,  78 }, {   0,  60 },
280
        {   9,  69 },
281

    
282
        /* 166 - 226 */
283
        {  11,  28 }, {   2,  40 }, {   3,  44 }, {   0,  49 },
284
        {   0,  46 }, {   2,  44 }, {   2,  51 }, {   0,  47 },
285
        {   4,  39 }, {   2,  62 }, {   6,  46 }, {   0,  54 },
286
        {   3,  54 }, {   2,  58 }, {   4,  63 }, {   6,  51 },
287
        {   6,  57 }, {   7,  53 }, {   6,  52 }, {   6,  55 },
288
        {  11,  45 }, {  14,  36 }, {   8,  53 }, {  -1,  82 },
289
        {   7,  55 }, {  -3,  78 }, {  15,  46 }, {  22,  31 },
290
        {  -1,  84 }, {  25,   7 }, {  30,  -7 }, {  28,   3 },
291
        {  28,   4 }, {  32,   0 }, {  34,  -1 }, {  30,   6 },
292
        {  30,   6 }, {  32,   9 }, {  31,  19 }, {  26,  27 },
293
        {  26,  30 }, {  37,  20 }, {  28,  34 }, {  17,  70 },
294
        {   1,  67 }, {   5,  59 }, {   9,  67 }, {  16,  30 },
295
        {  18,  32 }, {  18,  35 }, {  22,  29 }, {  24,  31 },
296
        {  23,  38 }, {  18,  43 }, {  20,  41 }, {  11,  63 },
297
        {   9,  59 }, {   9,  64 }, {  -1,  94 }, {  -2,  89 },
298
        {  -9, 108 },
299

    
300
        /* 227 - 275 */
301
        {  -6,  76 }, {  -2,  44 }, {   0,  45 }, {   0,  52 },
302
        {  -3,  64 }, {  -2,  59 }, {  -4,  70 }, {  -4,  75 },
303
        {  -8,  82 }, { -17, 102 }, {  -9,  77 }, {   3,  24 },
304
        {   0,  42 }, {   0,  48 }, {   0,  55 }, {  -6,  59 },
305
        {  -7,  71 }, { -12,  83 }, { -11,  87 }, { -30, 119 },
306
        {   1,  58 }, {  -3,  29 }, {  -1,  36 }, {   1,  38 },
307
        {   2,  43 }, {  -6,  55 }, {   0,  58 }, {   0,  64 },
308
        {  -3,  74 }, { -10,  90 }, {   0,  70 }, {  -4,  29 },
309
        {   5,  31 }, {   7,  42 }, {   1,  59 }, {  -2,  58 },
310
        {  -3,  72 }, {  -3,  81 }, { -11,  97 }, {   0,  58 },
311
        {   8,   5 }, {  10,  14 }, {  14,  18 }, {  13,  27 },
312
        {   2,  40 }, {   0,  58 }, {  -3,  70 }, {  -6,  79 },
313
        {  -8,  85 },
314

    
315
        /* 276 a bit special (not used, bypass is used instead) */
316
        { 0, 0 },
317

    
318
        /* 277 - 337 */
319
        { -13, 106 }, { -16, 106 }, { -10,  87 }, { -21, 114 },
320
        { -18, 110 }, { -14,  98 }, { -22, 110 }, { -21, 106 },
321
        { -18, 103 }, { -21, 107 }, { -23, 108 }, { -26, 112 },
322
        { -10,  96 }, { -12,  95 }, {  -5,  91 }, {  -9,  93 },
323
        { -22,  94 }, {  -5,  86 }, {   9,  67 }, {  -4,  80 },
324
        { -10,  85 }, {  -1,  70 }, {   7,  60 }, {   9,  58 },
325
        {   5,  61 }, {  12,  50 }, {  15,  50 }, {  18,  49 },
326
        {  17,  54 }, {  10,  41 }, {   7,  46 }, {  -1,  51 },
327
        {   7,  49 }, {   8,  52 }, {   9,  41 }, {   6,  47 },
328
        {   2,  55 }, {  13,  41 }, {  10,  44 }, {   6,  50 },
329
        {   5,  53 }, {  13,  49 }, {   4,  63 }, {   6,  64 },
330
        {  -2,  69 }, {  -2,  59 }, {   6,  70 }, {  10,  44 },
331
        {   9,  31 }, {  12,  43 }, {   3,  53 }, {  14,  34 },
332
        {  10,  38 }, {  -3,  52 }, {  13,  40 }, {  17,  32 },
333
        {   7,  44 }, {   7,  38 }, {  13,  50 }, {  10,  57 },
334
        {  26,  43 },
335

    
336
        /* 338 - 398 */
337
        {  14,  11 }, {  11,  14 }, {   9,  11 }, {  18,  11 },
338
        {  21,   9 }, {  23,  -2 }, {  32, -15 }, {  32, -15 },
339
        {  34, -21 }, {  39, -23 }, {  42, -33 }, {  41, -31 },
340
        {  46, -28 }, {  38, -12 }, {  21,  29 }, {  45, -24 },
341
        {  53, -45 }, {  48, -26 }, {  65, -43 }, {  43, -19 },
342
        {  39, -10 }, {  30,   9 }, {  18,  26 }, {  20,  27 },
343
        {   0,  57 }, { -14,  82 }, {  -5,  75 }, { -19,  97 },
344
        { -35, 125 }, {  27,   0 }, {  28,   0 }, {  31,  -4 },
345
        {  27,   6 }, {  34,   8 }, {  30,  10 }, {  24,  22 },
346
        {  33,  19 }, {  22,  32 }, {  26,  31 }, {  21,  41 },
347
        {  26,  44 }, {  23,  47 }, {  16,  65 }, {  14,  71 },
348
        {   8,  60 }, {   6,  63 }, {  17,  65 }, {  21,  24 },
349
        {  23,  20 }, {  26,  23 }, {  27,  32 }, {  28,  23 },
350
        {  28,  24 }, {  23,  40 }, {  24,  32 }, {  28,  29 },
351
        {  23,  42 }, {  19,  57 }, {  22,  53 }, {  22,  61 },
352
        {  11,  86 },
353

    
354
        /* 399 - 435 */
355
        {  12,  40 }, {  11,  51 }, {  14,  59 },
356
        {  -4,  79 }, {  -7,  71 }, {  -5,  69 }, {  -9,  70 },
357
        {  -8,  66 }, { -10,  68 }, { -19,  73 }, { -12,  69 },
358
        { -16,  70 }, { -15,  67 }, { -20,  62 }, { -19,  70 },
359
        { -16,  66 }, { -22,  65 }, { -20,  63 }, {   9,  -2 },
360
        {  26,  -9 }, {  33,  -9 }, {  39,  -7 }, {  41,  -2 },
361
        {  45,   3 }, {  49,   9 }, {  45,  27 }, {  36,  59 },
362
        {  -6,  66 }, {  -7,  35 }, {  -7,  42 }, {  -8,  45 },
363
        {  -5,  48 }, { -12,  56 }, {  -6,  60 }, {  -5,  62 },
364
        {  -8,  66 }, {  -8,  76 },
365

    
366
        /* 436 - 459 */
367
        {  -5,  85 }, {  -6,  81 }, { -10,  77 }, {  -7,  81 },
368
        { -17,  80 }, { -18,  73 }, {  -4,  74 }, { -10,  83 },
369
        {  -9,  71 }, {  -9,  67 }, {  -1,  61 }, {  -8,  66 },
370
        { -14,  66 }, {   0,  59 }, {   2,  59 }, {  21, -13 },
371
        {  33, -14 }, {  39,  -7 }, {  46,  -2 }, {  51,   2 },
372
        {  60,   6 }, {  61,  17 }, {  55,  34 }, {  42,  62 },
373
    },
374

    
375
    /* i_cabac_init_idc == 1 */
376
    {
377
        /* 0 - 10 */
378
        {  20, -15 }, {   2,  54 }, {   3,  74 }, {  20, -15 },
379
        {   2,  54 }, {   3,  74 }, { -28, 127 }, { -23, 104 },
380
        {  -6,  53 }, {  -1,  54 }, {   7,  51 },
381

    
382
        /* 11 - 23 */
383
        {  22,  25 }, {  34,   0 }, {  16,   0 }, {  -2,   9 },
384
        {   4,  41 }, { -29, 118 }, {   2,  65 }, {  -6,  71 },
385
        { -13,  79 }, {   5,  52 }, {   9,  50 }, {  -3,  70 },
386
        {  10,  54 },
387

    
388
        /* 24 - 39 */
389
        {  26,  34 }, {  19,  22 }, {  40,   0 }, {  57,   2 },
390
        {  41,  36 }, {  26,  69 }, { -45, 127 }, { -15, 101 },
391
        {  -4,  76 }, {  -6,  71 }, { -13,  79 }, {   5,  52 },
392
        {   6,  69 }, { -13,  90 }, {   0,  52 }, {   8,  43 },
393

    
394
        /* 40 - 53 */
395
        {  -2,  69 },{  -5,  82 },{ -10,  96 },{   2,  59 },
396
        {   2,  75 },{  -3,  87 },{  -3,  100 },{   1,  56 },
397
        {  -3,  74 },{  -6,  85 },{   0,  59 },{  -3,  81 },
398
        {  -7,  86 },{  -5,  95 },
399

    
400
        /* 54 - 59 */
401
        {  -1,  66 },{  -1,  77 },{   1,  70 },{  -2,  86 },
402
        {  -5,  72 },{   0,  61 },
403

    
404
        /* 60 - 69 */
405
        { 0, 41 },   { 0, 63 },   { 0, 63 },     { 0, 63 },
406
        { -9, 83 },  { 4, 86 },   { 0, 97 },     { -7, 72 },
407
        { 13, 41 },  { 3, 62 },
408

    
409
        /* 70 - 104 */
410
        {  13,  15 }, {   7,  51 }, {   2,  80 }, { -39, 127 },
411
        { -18,  91 }, { -17,  96 }, { -26,  81 }, { -35,  98 },
412
        { -24, 102 }, { -23,  97 }, { -27, 119 }, { -24,  99 },
413
        { -21, 110 }, { -18, 102 }, { -36, 127 }, {   0,  80 },
414
        {  -5,  89 }, {  -7,  94 }, {  -4,  92 }, {   0,  39 },
415
        {   0,  65 }, { -15,  84 }, { -35, 127 }, {  -2,  73 },
416
        { -12, 104 }, {  -9,  91 }, { -31, 127 }, {   3,  55 },
417
        {   7,  56 }, {   7,  55 }, {   8,  61 }, {  -3,  53 },
418
        {   0,  68 }, {  -7,  74 }, {  -9,  88 },
419

    
420
        /* 105 -> 165 */
421
        { -13, 103 }, { -13,  91 }, {  -9,  89 }, { -14,  92 },
422
        {  -8,  76 }, { -12,  87 }, { -23, 110 }, { -24, 105 },
423
        { -10,  78 }, { -20, 112 }, { -17,  99 }, { -78, 127 },
424
        { -70, 127 }, { -50, 127 }, { -46, 127 }, {  -4,  66 },
425
        {  -5,  78 }, {  -4,  71 }, {  -8,  72 }, {   2,  59 },
426
        {  -1,  55 }, {  -7,  70 }, {  -6,  75 }, {  -8,  89 },
427
        { -34, 119 }, {  -3,  75 }, {  32,  20 }, {  30,  22 },
428
        { -44, 127 }, {   0,  54 }, {  -5,  61 }, {   0,  58 },
429
        {  -1,  60 }, {  -3,  61 }, {  -8,  67 }, { -25,  84 },
430
        { -14,  74 }, {  -5,  65 }, {   5,  52 }, {   2,  57 },
431
        {   0,  61 }, {  -9,  69 }, { -11,  70 }, {  18,  55 },
432
        {  -4,  71 }, {   0,  58 }, {   7,  61 }, {   9,  41 },
433
        {  18,  25 }, {   9,  32 }, {   5,  43 }, {   9,  47 },
434
        {   0,  44 }, {   0,  51 }, {   2,  46 }, {  19,  38 },
435
        {  -4,  66 }, {  15,  38 }, {  12,  42 }, {   9,  34 },
436
        {   0,  89 },
437

    
438
        /* 166 - 226 */
439
        {   4,  45 }, {  10,  28 }, {  10,  31 }, {  33, -11 },
440
        {  52, -43 }, {  18,  15 }, {  28,   0 }, {  35, -22 },
441
        {  38, -25 }, {  34,   0 }, {  39, -18 }, {  32, -12 },
442
        { 102, -94 }, {   0,   0 }, {  56, -15 }, {  33,  -4 },
443
        {  29,  10 }, {  37,  -5 }, {  51, -29 }, {  39,  -9 },
444
        {  52, -34 }, {  69, -58 }, {  67, -63 }, {  44,  -5 },
445
        {  32,   7 }, {  55, -29 }, {  32,   1 }, {   0,   0 },
446
        {  27,  36 }, {  33, -25 }, {  34, -30 }, {  36, -28 },
447
        {  38, -28 }, {  38, -27 }, {  34, -18 }, {  35, -16 },
448
        {  34, -14 }, {  32,  -8 }, {  37,  -6 }, {  35,   0 },
449
        {  30,  10 }, {  28,  18 }, {  26,  25 }, {  29,  41 },
450
        {   0,  75 }, {   2,  72 }, {   8,  77 }, {  14,  35 },
451
        {  18,  31 }, {  17,  35 }, {  21,  30 }, {  17,  45 },
452
        {  20,  42 }, {  18,  45 }, {  27,  26 }, {  16,  54 },
453
        {   7,  66 }, {  16,  56 }, {  11,  73 }, {  10,  67 },
454
        { -10, 116 },
455

    
456
        /* 227 - 275 */
457
        { -23, 112 }, { -15,  71 }, {  -7,  61 }, {   0,  53 },
458
        {  -5,  66 }, { -11,  77 }, {  -9,  80 }, {  -9,  84 },
459
        { -10,  87 }, { -34, 127 }, { -21, 101 }, {  -3,  39 },
460
        {  -5,  53 }, {  -7,  61 }, { -11,  75 }, { -15,  77 },
461
        { -17,  91 }, { -25, 107 }, { -25, 111 }, { -28, 122 },
462
        { -11,  76 }, { -10,  44 }, { -10,  52 }, { -10,  57 },
463
        {  -9,  58 }, { -16,  72 }, {  -7,  69 }, {  -4,  69 },
464
        {  -5,  74 }, {  -9,  86 }, {   2,  66 }, {  -9,  34 },
465
        {   1,  32 }, {  11,  31 }, {   5,  52 }, {  -2,  55 },
466
        {  -2,  67 }, {   0,  73 }, {  -8,  89 }, {   3,  52 },
467
        {   7,   4 }, {  10,   8 }, {  17,   8 }, {  16,  19 },
468
        {   3,  37 }, {  -1,  61 }, {  -5,  73 }, {  -1,  70 },
469
        {  -4,  78 },
470

    
471
        /* 276 a bit special (not used, bypass is used instead) */
472
        { 0, 0 },
473

    
474
        /* 277 - 337 */
475
        { -21, 126 }, { -23, 124 }, { -20, 110 }, { -26, 126 },
476
        { -25, 124 }, { -17, 105 }, { -27, 121 }, { -27, 117 },
477
        { -17, 102 }, { -26, 117 }, { -27, 116 }, { -33, 122 },
478
        { -10,  95 }, { -14, 100 }, {  -8,  95 }, { -17, 111 },
479
        { -28, 114 }, {  -6,  89 }, {  -2,  80 }, {  -4,  82 },
480
        {  -9,  85 }, {  -8,  81 }, {  -1,  72 }, {   5,  64 },
481
        {   1,  67 }, {   9,  56 }, {   0,  69 }, {   1,  69 },
482
        {   7,  69 }, {  -7,  69 }, {  -6,  67 }, { -16,  77 },
483
        {  -2,  64 }, {   2,  61 }, {  -6,  67 }, {  -3,  64 },
484
        {   2,  57 }, {  -3,  65 }, {  -3,  66 }, {   0,  62 },
485
        {   9,  51 }, {  -1,  66 }, {  -2,  71 }, {  -2,  75 },
486
        {  -1,  70 }, {  -9,  72 }, {  14,  60 }, {  16,  37 },
487
        {   0,  47 }, {  18,  35 }, {  11,  37 }, {  12,  41 },
488
        {  10,  41 }, {   2,  48 }, {  12,  41 }, {  13,  41 },
489
        {   0,  59 }, {   3,  50 }, {  19,  40 }, {   3,  66 },
490
        {  18,  50 },
491

    
492
        /* 338 - 398 */
493
        {  19,  -6 }, {  18,  -6 }, {  14,   0 }, {  26, -12 },
494
        {  31, -16 }, {  33, -25 }, {  33, -22 }, {  37, -28 },
495
        {  39, -30 }, {  42, -30 }, {  47, -42 }, {  45, -36 },
496
        {  49, -34 }, {  41, -17 }, {  32,   9 }, {  69, -71 },
497
        {  63, -63 }, {  66, -64 }, {  77, -74 }, {  54, -39 },
498
        {  52, -35 }, {  41, -10 }, {  36,   0 }, {  40,  -1 },
499
        {  30,  14 }, {  28,  26 }, {  23,  37 }, {  12,  55 },
500
        {  11,  65 }, {  37, -33 }, {  39, -36 }, {  40, -37 },
501
        {  38, -30 }, {  46, -33 }, {  42, -30 }, {  40, -24 },
502
        {  49, -29 }, {  38, -12 }, {  40, -10 }, {  38,  -3 },
503
        {  46,  -5 }, {  31,  20 }, {  29,  30 }, {  25,  44 },
504
        {  12,  48 }, {  11,  49 }, {  26,  45 }, {  22,  22 },
505
        {  23,  22 }, {  27,  21 }, {  33,  20 }, {  26,  28 },
506
        {  30,  24 }, {  27,  34 }, {  18,  42 }, {  25,  39 },
507
        {  18,  50 }, {  12,  70 }, {  21,  54 }, {  14,  71 },
508
        {  11,  83 },
509

    
510
        /* 399 - 435 */
511
        {  25,  32 }, {  21,  49 }, {  21,  54 },
512
        {  -5,  85 }, {  -6,  81 }, { -10,  77 }, {  -7,  81 },
513
        { -17,  80 }, { -18,  73 }, {  -4,  74 }, { -10,  83 },
514
        {  -9,  71 }, {  -9,  67 }, {  -1,  61 }, {  -8,  66 },
515
        { -14,  66 }, {   0,  59 }, {   2,  59 }, {  17, -10 },
516
        {  32, -13 }, {  42,  -9 }, {  49,  -5 }, {  53,   0 },
517
        {  64,   3 }, {  68,  10 }, {  66,  27 }, {  47,  57 },
518
        {  -5,  71 }, {   0,  24 }, {  -1,  36 }, {  -2,  42 },
519
        {  -2,  52 }, {  -9,  57 }, {  -6,  63 }, {  -4,  65 },
520
        {  -4,  67 }, {  -7,  82 },
521

    
522
        /* 436 - 459 */
523
        {  -3,  81 }, {  -3,  76 }, {  -7,  72 }, {  -6,  78 },
524
        { -12,  72 }, { -14,  68 }, {  -3,  70 }, {  -6,  76 },
525
        {  -5,  66 }, {  -5,  62 }, {   0,  57 }, {  -4,  61 },
526
        {  -9,  60 }, {   1,  54 }, {   2,  58 }, {  17, -10 },
527
        {  32, -13 }, {  42,  -9 }, {  49,  -5 }, {  53,   0 },
528
        {  64,   3 }, {  68,  10 }, {  66,  27 }, {  47,  57 },
529
    },
530

    
531
    /* i_cabac_init_idc == 2 */
532
    {
533
        /* 0 - 10 */
534
        {  20, -15 }, {   2,  54 }, {   3,  74 }, {  20, -15 },
535
        {   2,  54 }, {   3,  74 }, { -28, 127 }, { -23, 104 },
536
        {  -6,  53 }, {  -1,  54 }, {   7,  51 },
537

    
538
        /* 11 - 23 */
539
        {  29,  16 }, {  25,   0 }, {  14,   0 }, { -10,  51 },
540
        {  -3,  62 }, { -27,  99 }, {  26,  16 }, {  -4,  85 },
541
        { -24, 102 }, {   5,  57 }, {   6,  57 }, { -17,  73 },
542
        {  14,  57 },
543

    
544
        /* 24 - 39 */
545
        {  20,  40 }, {  20,  10 }, {  29,   0 }, {  54,   0 },
546
        {  37,  42 }, {  12,  97 }, { -32, 127 }, { -22, 117 },
547
        {  -2,  74 }, {  -4,  85 }, { -24, 102 }, {   5,  57 },
548
        {  -6,  93 }, { -14,  88 }, {  -6,  44 }, {   4,  55 },
549

    
550
        /* 40 - 53 */
551
        { -11,  89 },{ -15,  103 },{ -21,  116 },{  19,  57 },
552
        {  20,  58 },{   4,  84 },{   6,  96 },{   1,  63 },
553
        {  -5,  85 },{ -13,  106 },{   5,  63 },{   6,  75 },
554
        {  -3,  90 },{  -1,  101 },
555

    
556
        /* 54 - 59 */
557
        {   3,  55 },{  -4,  79 },{  -2,  75 },{ -12,  97 },
558
        {  -7,  50 },{   1,  60 },
559

    
560
        /* 60 - 69 */
561
        { 0, 41 },   { 0, 63 },   { 0, 63 },     { 0, 63 },
562
        { -9, 83 },  { 4, 86 },   { 0, 97 },     { -7, 72 },
563
        { 13, 41 },  { 3, 62 },
564

    
565
        /* 70 - 104 */
566
        {   7,  34 }, {  -9,  88 }, { -20, 127 }, { -36, 127 },
567
        { -17,  91 }, { -14,  95 }, { -25,  84 }, { -25,  86 },
568
        { -12,  89 }, { -17,  91 }, { -31, 127 }, { -14,  76 },
569
        { -18, 103 }, { -13,  90 }, { -37, 127 }, {  11,  80 },
570
        {   5,  76 }, {   2,  84 }, {   5,  78 }, {  -6,  55 },
571
        {   4,  61 }, { -14,  83 }, { -37, 127 }, {  -5,  79 },
572
        { -11, 104 }, { -11,  91 }, { -30, 127 }, {   0,  65 },
573
        {  -2,  79 }, {   0,  72 }, {  -4,  92 }, {  -6,  56 },
574
        {   3,  68 }, {  -8,  71 }, { -13,  98 },
575

    
576
        /* 105 -> 165 */
577
        {  -4,  86 }, { -12,  88 }, {  -5,  82 }, {  -3,  72 },
578
        {  -4,  67 }, {  -8,  72 }, { -16,  89 }, {  -9,  69 },
579
        {  -1,  59 }, {   5,  66 }, {   4,  57 }, {  -4,  71 },
580
        {  -2,  71 }, {   2,  58 }, {  -1,  74 }, {  -4,  44 },
581
        {  -1,  69 }, {   0,  62 }, {  -7,  51 }, {  -4,  47 },
582
        {  -6,  42 }, {  -3,  41 }, {  -6,  53 }, {   8,  76 },
583
        {  -9,  78 }, { -11,  83 }, {   9,  52 }, {   0,  67 },
584
        {  -5,  90 }, {   1,  67 }, { -15,  72 }, {  -5,  75 },
585
        {  -8,  80 }, { -21,  83 }, { -21,  64 }, { -13,  31 },
586
        { -25,  64 }, { -29,  94 }, {   9,  75 }, {  17,  63 },
587
        {  -8,  74 }, {  -5,  35 }, {  -2,  27 }, {  13,  91 },
588
        {   3,  65 }, {  -7,  69 }, {   8,  77 }, { -10,  66 },
589
        {   3,  62 }, {  -3,  68 }, { -20,  81 }, {   0,  30 },
590
        {   1,   7 }, {  -3,  23 }, { -21,  74 }, {  16,  66 },
591
        { -23, 124 }, {  17,  37 }, {  44, -18 }, {  50, -34 },
592
        { -22, 127 },
593

    
594
        /* 166 - 226 */
595
        {   4,  39 }, {   0,  42 }, {   7,  34 }, {  11,  29 },
596
        {   8,  31 }, {   6,  37 }, {   7,  42 }, {   3,  40 },
597
        {   8,  33 }, {  13,  43 }, {  13,  36 }, {   4,  47 },
598
        {   3,  55 }, {   2,  58 }, {   6,  60 }, {   8,  44 },
599
        {  11,  44 }, {  14,  42 }, {   7,  48 }, {   4,  56 },
600
        {   4,  52 }, {  13,  37 }, {   9,  49 }, {  19,  58 },
601
        {  10,  48 }, {  12,  45 }, {   0,  69 }, {  20,  33 },
602
        {   8,  63 }, {  35, -18 }, {  33, -25 }, {  28,  -3 },
603
        {  24,  10 }, {  27,   0 }, {  34, -14 }, {  52, -44 },
604
        {  39, -24 }, {  19,  17 }, {  31,  25 }, {  36,  29 },
605
        {  24,  33 }, {  34,  15 }, {  30,  20 }, {  22,  73 },
606
        {  20,  34 }, {  19,  31 }, {  27,  44 }, {  19,  16 },
607
        {  15,  36 }, {  15,  36 }, {  21,  28 }, {  25,  21 },
608
        {  30,  20 }, {  31,  12 }, {  27,  16 }, {  24,  42 },
609
        {   0,  93 }, {  14,  56 }, {  15,  57 }, {  26,  38 },
610
        { -24, 127 },
611

    
612
        /* 227 - 275 */
613
        { -24, 115 }, { -22,  82 }, {  -9,  62 }, {   0,  53 },
614
        {   0,  59 }, { -14,  85 }, { -13,  89 }, { -13,  94 },
615
        { -11,  92 }, { -29, 127 }, { -21, 100 }, { -14,  57 },
616
        { -12,  67 }, { -11,  71 }, { -10,  77 }, { -21,  85 },
617
        { -16,  88 }, { -23, 104 }, { -15,  98 }, { -37, 127 },
618
        { -10,  82 }, {  -8,  48 }, {  -8,  61 }, {  -8,  66 },
619
        {  -7,  70 }, { -14,  75 }, { -10,  79 }, {  -9,  83 },
620
        { -12,  92 }, { -18, 108 }, {  -4,  79 }, { -22,  69 },
621
        { -16,  75 }, {  -2,  58 }, {   1,  58 }, { -13,  78 },
622
        {  -9,  83 }, {  -4,  81 }, { -13,  99 }, { -13,  81 },
623
        {  -6,  38 }, { -13,  62 }, {  -6,  58 }, {  -2,  59 },
624
        { -16,  73 }, { -10,  76 }, { -13,  86 }, {  -9,  83 },
625
        { -10,  87 },
626

    
627
        /* 276 a bit special (not used, bypass is used instead) */
628
        { 0, 0 },
629

    
630
        /* 277 - 337 */
631
        { -22, 127 }, { -25, 127 }, { -25, 120 }, { -27, 127 },
632
        { -19, 114 }, { -23, 117 }, { -25, 118 }, { -26, 117 },
633
        { -24, 113 }, { -28, 118 }, { -31, 120 }, { -37, 124 },
634
        { -10,  94 }, { -15, 102 }, { -10,  99 }, { -13, 106 },
635
        { -50, 127 }, {  -5,  92 }, {  17,  57 }, {  -5,  86 },
636
        { -13,  94 }, { -12,  91 }, {  -2,  77 }, {   0,  71 },
637
        {  -1,  73 }, {   4,  64 }, {  -7,  81 }, {   5,  64 },
638
        {  15,  57 }, {   1,  67 }, {   0,  68 }, { -10,  67 },
639
        {   1,  68 }, {   0,  77 }, {   2,  64 }, {   0,  68 },
640
        {  -5,  78 }, {   7,  55 }, {   5,  59 }, {   2,  65 },
641
        {  14,  54 }, {  15,  44 }, {   5,  60 }, {   2,  70 },
642
        {  -2,  76 }, { -18,  86 }, {  12,  70 }, {   5,  64 },
643
        { -12,  70 }, {  11,  55 }, {   5,  56 }, {   0,  69 },
644
        {   2,  65 }, {  -6,  74 }, {   5,  54 }, {   7,  54 },
645
        {  -6,  76 }, { -11,  82 }, {  -2,  77 }, {  -2,  77 },
646
        {  25,  42 },
647

    
648
        /* 338 - 398 */
649
        {  17, -13 }, {  16,  -9 }, {  17, -12 }, {  27, -21 },
650
        {  37, -30 }, {  41, -40 }, {  42, -41 }, {  48, -47 },
651
        {  39, -32 }, {  46, -40 }, {  52, -51 }, {  46, -41 },
652
        {  52, -39 }, {  43, -19 }, {  32,  11 }, {  61, -55 },
653
        {  56, -46 }, {  62, -50 }, {  81, -67 }, {  45, -20 },
654
        {  35,  -2 }, {  28,  15 }, {  34,   1 }, {  39,   1 },
655
        {  30,  17 }, {  20,  38 }, {  18,  45 }, {  15,  54 },
656
        {   0,  79 }, {  36, -16 }, {  37, -14 }, {  37, -17 },
657
        {  32,   1 }, {  34,  15 }, {  29,  15 }, {  24,  25 },
658
        {  34,  22 }, {  31,  16 }, {  35,  18 }, {  31,  28 },
659
        {  33,  41 }, {  36,  28 }, {  27,  47 }, {  21,  62 },
660
        {  18,  31 }, {  19,  26 }, {  36,  24 }, {  24,  23 },
661
        {  27,  16 }, {  24,  30 }, {  31,  29 }, {  22,  41 },
662
        {  22,  42 }, {  16,  60 }, {  15,  52 }, {  14,  60 },
663
        {   3,  78 }, { -16, 123 }, {  21,  53 }, {  22,  56 },
664
        {  25,  61 },
665

    
666
        /* 399 - 435 */
667
        {  21,  33 }, {  19,  50 }, {  17,  61 },
668
        {  -3,  78 }, {  -8,  74 }, {  -9,  72 }, { -10,  72 },
669
        { -18,  75 }, { -12,  71 }, { -11,  63 }, {  -5,  70 },
670
        { -17,  75 }, { -14,  72 }, { -16,  67 }, {  -8,  53 },
671
        { -14,  59 }, {  -9,  52 }, { -11,  68 }, {   9,  -2 },
672
        {  30, -10 }, {  31,  -4 }, {  33,  -1 }, {  33,   7 },
673
        {  31,  12 }, {  37,  23 }, {  31,  38 }, {  20,  64 },
674
        {  -9,  71 }, {  -7,  37 }, {  -8,  44 }, { -11,  49 },
675
        { -10,  56 }, { -12,  59 }, {  -8,  63 }, {  -9,  67 },
676
        {  -6,  68 }, { -10,  79 },
677

    
678
        /* 436 - 459 */
679
        {  -3,  78 }, {  -8,  74 }, {  -9,  72 }, { -10,  72 },
680
        { -18,  75 }, { -12,  71 }, { -11,  63 }, {  -5,  70 },
681
        { -17,  75 }, { -14,  72 }, { -16,  67 }, {  -8,  53 },
682
        { -14,  59 }, {  -9,  52 }, { -11,  68 }, {   9,  -2 },
683
        {  30, -10 }, {  31,  -4 }, {  33,  -1 }, {  33,   7 },
684
        {  31,  12 }, {  37,  23 }, {  31,  38 }, {  20,  64 },
685
    }
686
};
687

    
688
void ff_h264_init_cabac_states(H264Context *h) {
689
    MpegEncContext * const s = &h->s;
690
    int i;
691
    const int8_t (*tab)[2];
692

    
693
    if( h->slice_type_nos == FF_I_TYPE ) tab = cabac_context_init_I;
694
    else                                 tab = cabac_context_init_PB[h->cabac_init_idc];
695

    
696
    /* calculate pre-state */
697
    for( i= 0; i < 460; i++ ) {
698
        int pre = 2*(((tab[i][0] * s->qscale) >>4 ) + tab[i][1]) - 127;
699

    
700
        pre^= pre>>31;
701
        if(pre > 124)
702
            pre= 124 + (pre&1);
703

    
704
        h->cabac_state[i] =  pre;
705
    }
706
}
707

    
708
static int decode_cabac_field_decoding_flag(H264Context *h) {
709
    MpegEncContext * const s = &h->s;
710
    const long mbb_xy = h->mb_xy - 2L*s->mb_stride;
711

    
712
    unsigned long ctx = 0;
713

    
714
    ctx += h->mb_field_decoding_flag & !!s->mb_x; //for FMO:(s->current_picture.mb_type[mba_xy]>>7)&(h->slice_table[mba_xy] == h->slice_num);
715
    ctx += (s->current_picture.mb_type[mbb_xy]>>7)&(h->slice_table[mbb_xy] == h->slice_num);
716

    
717
    return get_cabac_noinline( &h->cabac, &(h->cabac_state+70)[ctx] );
718
}
719

    
720
static int decode_cabac_intra_mb_type(H264Context *h, int ctx_base, int intra_slice) {
721
    uint8_t *state= &h->cabac_state[ctx_base];
722
    int mb_type;
723

    
724
    if(intra_slice){
725
        int ctx=0;
726
        if( h->left_type[0] & (MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM))
727
            ctx++;
728
        if( h->top_type     & (MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM))
729
            ctx++;
730
        if( get_cabac_noinline( &h->cabac, &state[ctx] ) == 0 )
731
            return 0;   /* I4x4 */
732
        state += 2;
733
    }else{
734
        if( get_cabac_noinline( &h->cabac, state ) == 0 )
735
            return 0;   /* I4x4 */
736
    }
737

    
738
    if( get_cabac_terminate( &h->cabac ) )
739
        return 25;  /* PCM */
740

    
741
    mb_type = 1; /* I16x16 */
742
    mb_type += 12 * get_cabac_noinline( &h->cabac, &state[1] ); /* cbp_luma != 0 */
743
    if( get_cabac_noinline( &h->cabac, &state[2] ) ) /* cbp_chroma */
744
        mb_type += 4 + 4 * get_cabac_noinline( &h->cabac, &state[2+intra_slice] );
745
    mb_type += 2 * get_cabac_noinline( &h->cabac, &state[3+intra_slice] );
746
    mb_type += 1 * get_cabac_noinline( &h->cabac, &state[3+2*intra_slice] );
747
    return mb_type;
748
}
749

    
750
static int decode_cabac_mb_skip( H264Context *h, int mb_x, int mb_y ) {
751
    MpegEncContext * const s = &h->s;
752
    int mba_xy, mbb_xy;
753
    int ctx = 0;
754

    
755
    if(FRAME_MBAFF){ //FIXME merge with the stuff in fill_caches?
756
        int mb_xy = mb_x + (mb_y&~1)*s->mb_stride;
757
        mba_xy = mb_xy - 1;
758
        if( (mb_y&1)
759
            && h->slice_table[mba_xy] == h->slice_num
760
            && MB_FIELD == !!IS_INTERLACED( s->current_picture.mb_type[mba_xy] ) )
761
            mba_xy += s->mb_stride;
762
        if( MB_FIELD ){
763
            mbb_xy = mb_xy - s->mb_stride;
764
            if( !(mb_y&1)
765
                && h->slice_table[mbb_xy] == h->slice_num
766
                && IS_INTERLACED( s->current_picture.mb_type[mbb_xy] ) )
767
                mbb_xy -= s->mb_stride;
768
        }else
769
            mbb_xy = mb_x + (mb_y-1)*s->mb_stride;
770
    }else{
771
        int mb_xy = h->mb_xy;
772
        mba_xy = mb_xy - 1;
773
        mbb_xy = mb_xy - (s->mb_stride << FIELD_PICTURE);
774
    }
775

    
776
    if( h->slice_table[mba_xy] == h->slice_num && !IS_SKIP( s->current_picture.mb_type[mba_xy] ))
777
        ctx++;
778
    if( h->slice_table[mbb_xy] == h->slice_num && !IS_SKIP( s->current_picture.mb_type[mbb_xy] ))
779
        ctx++;
780

    
781
    if( h->slice_type_nos == FF_B_TYPE )
782
        ctx += 13;
783
    return get_cabac_noinline( &h->cabac, &h->cabac_state[11+ctx] );
784
}
785

    
786
static int decode_cabac_mb_intra4x4_pred_mode( H264Context *h, int pred_mode ) {
787
    int mode = 0;
788

    
789
    if( get_cabac( &h->cabac, &h->cabac_state[68] ) )
790
        return pred_mode;
791

    
792
    mode += 1 * get_cabac( &h->cabac, &h->cabac_state[69] );
793
    mode += 2 * get_cabac( &h->cabac, &h->cabac_state[69] );
794
    mode += 4 * get_cabac( &h->cabac, &h->cabac_state[69] );
795

    
796
    return mode + ( mode >= pred_mode );
797
}
798

    
799
static int decode_cabac_mb_chroma_pre_mode( H264Context *h) {
800
    const int mba_xy = h->left_mb_xy[0];
801
    const int mbb_xy = h->top_mb_xy;
802

    
803
    int ctx = 0;
804

    
805
    /* No need to test for IS_INTRA4x4 and IS_INTRA16x16, as we set chroma_pred_mode_table to 0 */
806
    if( h->left_type[0] && h->chroma_pred_mode_table[mba_xy] != 0 )
807
        ctx++;
808

    
809
    if( h->top_type     && h->chroma_pred_mode_table[mbb_xy] != 0 )
810
        ctx++;
811

    
812
    if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+ctx] ) == 0 )
813
        return 0;
814

    
815
    if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+3] ) == 0 )
816
        return 1;
817
    if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+3] ) == 0 )
818
        return 2;
819
    else
820
        return 3;
821
}
822

    
823
static int decode_cabac_mb_cbp_luma( H264Context *h) {
824
    int cbp_b, cbp_a, ctx, cbp = 0;
825

    
826
    cbp_a = h->left_cbp;
827
    cbp_b = h->top_cbp;
828

    
829
    ctx = !(cbp_a & 0x02) + 2 * !(cbp_b & 0x04);
830
    cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]);
831
    ctx = !(cbp   & 0x01) + 2 * !(cbp_b & 0x08);
832
    cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]) << 1;
833
    ctx = !(cbp_a & 0x08) + 2 * !(cbp   & 0x01);
834
    cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]) << 2;
835
    ctx = !(cbp   & 0x04) + 2 * !(cbp   & 0x02);
836
    cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]) << 3;
837
    return cbp;
838
}
839
static int decode_cabac_mb_cbp_chroma( H264Context *h) {
840
    int ctx;
841
    int cbp_a, cbp_b;
842

    
843
    cbp_a = (h->left_cbp>>4)&0x03;
844
    cbp_b = (h-> top_cbp>>4)&0x03;
845

    
846
    ctx = 0;
847
    if( cbp_a > 0 ) ctx++;
848
    if( cbp_b > 0 ) ctx += 2;
849
    if( get_cabac_noinline( &h->cabac, &h->cabac_state[77 + ctx] ) == 0 )
850
        return 0;
851

    
852
    ctx = 4;
853
    if( cbp_a == 2 ) ctx++;
854
    if( cbp_b == 2 ) ctx += 2;
855
    return 1 + get_cabac_noinline( &h->cabac, &h->cabac_state[77 + ctx] );
856
}
857

    
858
static int decode_cabac_p_mb_sub_type( H264Context *h ) {
859
    if( get_cabac( &h->cabac, &h->cabac_state[21] ) )
860
        return 0;   /* 8x8 */
861
    if( !get_cabac( &h->cabac, &h->cabac_state[22] ) )
862
        return 1;   /* 8x4 */
863
    if( get_cabac( &h->cabac, &h->cabac_state[23] ) )
864
        return 2;   /* 4x8 */
865
    return 3;       /* 4x4 */
866
}
867
static int decode_cabac_b_mb_sub_type( H264Context *h ) {
868
    int type;
869
    if( !get_cabac( &h->cabac, &h->cabac_state[36] ) )
870
        return 0;   /* B_Direct_8x8 */
871
    if( !get_cabac( &h->cabac, &h->cabac_state[37] ) )
872
        return 1 + get_cabac( &h->cabac, &h->cabac_state[39] ); /* B_L0_8x8, B_L1_8x8 */
873
    type = 3;
874
    if( get_cabac( &h->cabac, &h->cabac_state[38] ) ) {
875
        if( get_cabac( &h->cabac, &h->cabac_state[39] ) )
876
            return 11 + get_cabac( &h->cabac, &h->cabac_state[39] ); /* B_L1_4x4, B_Bi_4x4 */
877
        type += 4;
878
    }
879
    type += 2*get_cabac( &h->cabac, &h->cabac_state[39] );
880
    type +=   get_cabac( &h->cabac, &h->cabac_state[39] );
881
    return type;
882
}
883

    
884
static int decode_cabac_mb_ref( H264Context *h, int list, int n ) {
885
    int refa = h->ref_cache[list][scan8[n] - 1];
886
    int refb = h->ref_cache[list][scan8[n] - 8];
887
    int ref  = 0;
888
    int ctx  = 0;
889

    
890
    if( h->slice_type_nos == FF_B_TYPE) {
891
        if( refa > 0 && !(h->direct_cache[scan8[n] - 1]&(MB_TYPE_DIRECT2>>1)) )
892
            ctx++;
893
        if( refb > 0 && !(h->direct_cache[scan8[n] - 8]&(MB_TYPE_DIRECT2>>1)) )
894
            ctx += 2;
895
    } else {
896
        if( refa > 0 )
897
            ctx++;
898
        if( refb > 0 )
899
            ctx += 2;
900
    }
901

    
902
    while( get_cabac( &h->cabac, &h->cabac_state[54+ctx] ) ) {
903
        ref++;
904
        ctx = (ctx>>2)+4;
905
        if(ref >= 32 /*h->ref_list[list]*/){
906
            return -1;
907
        }
908
    }
909
    return ref;
910
}
911

    
912
static int decode_cabac_mb_mvd( H264Context *h, int ctxbase, int amvd ) {
913
    int mvd;
914

    
915
    if(!get_cabac(&h->cabac, &h->cabac_state[ctxbase+(amvd>2)+(amvd>32)]))
916
        return 0;
917

    
918
    mvd= 1;
919
    ctxbase+= 3;
920
    while( mvd < 9 && get_cabac( &h->cabac, &h->cabac_state[ctxbase] ) ) {
921
        if( mvd < 4 )
922
            ctxbase++;
923
        mvd++;
924
    }
925

    
926
    if( mvd >= 9 ) {
927
        int k = 3;
928
        while( get_cabac_bypass( &h->cabac ) ) {
929
            mvd += 1 << k;
930
            k++;
931
            if(k>24){
932
                av_log(h->s.avctx, AV_LOG_ERROR, "overflow in decode_cabac_mb_mvd\n");
933
                return INT_MIN;
934
            }
935
        }
936
        while( k-- ) {
937
            mvd += get_cabac_bypass( &h->cabac )<<k;
938
        }
939
    }
940
    return get_cabac_bypass_sign( &h->cabac, -mvd );
941
}
942

    
943
#define DECODE_CABAC_MB_MVD( h,  list,  n )\
944
{\
945
    int amvd0 = h->mvd_cache[list][scan8[n] - 1][0] +\
946
                h->mvd_cache[list][scan8[n] - 8][0];\
947
    int amvd1 = h->mvd_cache[list][scan8[n] - 1][1] +\
948
                h->mvd_cache[list][scan8[n] - 8][1];\
949
\
950
    mx = mpx + decode_cabac_mb_mvd( h, 40, amvd0 );\
951
    my = mpy + decode_cabac_mb_mvd( h, 47, amvd1 );\
952
}
953

    
954
static av_always_inline int get_cabac_cbf_ctx( H264Context *h, int cat, int idx, int is_dc ) {
955
    int nza, nzb;
956
    int ctx = 0;
957

    
958
    if( is_dc ) {
959
        if( cat == 0 ) {
960
            nza = h->left_cbp&0x100;
961
            nzb = h-> top_cbp&0x100;
962
        } else {
963
            nza = (h->left_cbp>>(6+idx))&0x01;
964
            nzb = (h-> top_cbp>>(6+idx))&0x01;
965
        }
966
    } else {
967
        assert(cat == 1 || cat == 2 || cat == 4);
968
        nza = h->non_zero_count_cache[scan8[idx] - 1];
969
        nzb = h->non_zero_count_cache[scan8[idx] - 8];
970
    }
971

    
972
    if( nza > 0 )
973
        ctx++;
974

    
975
    if( nzb > 0 )
976
        ctx += 2;
977

    
978
    return ctx + 4 * cat;
979
}
980

    
981
DECLARE_ASM_CONST(1, uint8_t, last_coeff_flag_offset_8x8)[63] = {
982
    0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
983
    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
984
    3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
985
    5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8
986
};
987

    
988
static av_always_inline void decode_cabac_residual_internal( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff, int is_dc ) {
989
    static const int significant_coeff_flag_offset[2][6] = {
990
      { 105+0, 105+15, 105+29, 105+44, 105+47, 402 },
991
      { 277+0, 277+15, 277+29, 277+44, 277+47, 436 }
992
    };
993
    static const int last_coeff_flag_offset[2][6] = {
994
      { 166+0, 166+15, 166+29, 166+44, 166+47, 417 },
995
      { 338+0, 338+15, 338+29, 338+44, 338+47, 451 }
996
    };
997
    static const int coeff_abs_level_m1_offset[6] = {
998
        227+0, 227+10, 227+20, 227+30, 227+39, 426
999
    };
1000
    static const uint8_t significant_coeff_flag_offset_8x8[2][63] = {
1001
      { 0, 1, 2, 3, 4, 5, 5, 4, 4, 3, 3, 4, 4, 4, 5, 5,
1002
        4, 4, 4, 4, 3, 3, 6, 7, 7, 7, 8, 9,10, 9, 8, 7,
1003
        7, 6,11,12,13,11, 6, 7, 8, 9,14,10, 9, 8, 6,11,
1004
       12,13,11, 6, 9,14,10, 9,11,12,13,11,14,10,12 },
1005
      { 0, 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 7, 7, 8, 4, 5,
1006
        6, 9,10,10, 8,11,12,11, 9, 9,10,10, 8,11,12,11,
1007
        9, 9,10,10, 8,11,12,11, 9, 9,10,10, 8,13,13, 9,
1008
        9,10,10, 8,13,13, 9, 9,10,10,14,14,14,14,14 }
1009
    };
1010
    /* node ctx: 0..3: abslevel1 (with abslevelgt1 == 0).
1011
     * 4..7: abslevelgt1 + 3 (and abslevel1 doesn't matter).
1012
     * map node ctx => cabac ctx for level=1 */
1013
    static const uint8_t coeff_abs_level1_ctx[8] = { 1, 2, 3, 4, 0, 0, 0, 0 };
1014
    /* map node ctx => cabac ctx for level>1 */
1015
    static const uint8_t coeff_abs_levelgt1_ctx[8] = { 5, 5, 5, 5, 6, 7, 8, 9 };
1016
    static const uint8_t coeff_abs_level_transition[2][8] = {
1017
    /* update node ctx after decoding a level=1 */
1018
        { 1, 2, 3, 3, 4, 5, 6, 7 },
1019
    /* update node ctx after decoding a level>1 */
1020
        { 4, 4, 4, 4, 5, 6, 7, 7 }
1021
    };
1022

    
1023
    int index[64];
1024

    
1025
    int av_unused last;
1026
    int coeff_count = 0;
1027
    int node_ctx = 0;
1028

    
1029
    uint8_t *significant_coeff_ctx_base;
1030
    uint8_t *last_coeff_ctx_base;
1031
    uint8_t *abs_level_m1_ctx_base;
1032

    
1033
#if !ARCH_X86
1034
#define CABAC_ON_STACK
1035
#endif
1036
#ifdef CABAC_ON_STACK
1037
#define CC &cc
1038
    CABACContext cc;
1039
    cc.range     = h->cabac.range;
1040
    cc.low       = h->cabac.low;
1041
    cc.bytestream= h->cabac.bytestream;
1042
#else
1043
#define CC &h->cabac
1044
#endif
1045

    
1046

    
1047
    /* cat: 0-> DC 16x16  n = 0
1048
     *      1-> AC 16x16  n = luma4x4idx
1049
     *      2-> Luma4x4   n = luma4x4idx
1050
     *      3-> DC Chroma n = iCbCr
1051
     *      4-> AC Chroma n = 16 + 4 * iCbCr + chroma4x4idx
1052
     *      5-> Luma8x8   n = 4 * luma8x8idx
1053
     */
1054

    
1055
    /* read coded block flag */
1056
    if( is_dc || cat != 5 ) {
1057
        if( get_cabac( CC, &h->cabac_state[85 + get_cabac_cbf_ctx( h, cat, n, is_dc ) ] ) == 0 ) {
1058
            if( !is_dc )
1059
                h->non_zero_count_cache[scan8[n]] = 0;
1060

    
1061
#ifdef CABAC_ON_STACK
1062
            h->cabac.range     = cc.range     ;
1063
            h->cabac.low       = cc.low       ;
1064
            h->cabac.bytestream= cc.bytestream;
1065
#endif
1066
            return;
1067
        }
1068
    }
1069

    
1070
    significant_coeff_ctx_base = h->cabac_state
1071
        + significant_coeff_flag_offset[MB_FIELD][cat];
1072
    last_coeff_ctx_base = h->cabac_state
1073
        + last_coeff_flag_offset[MB_FIELD][cat];
1074
    abs_level_m1_ctx_base = h->cabac_state
1075
        + coeff_abs_level_m1_offset[cat];
1076

    
1077
    if( !is_dc && cat == 5 ) {
1078
#define DECODE_SIGNIFICANCE( coefs, sig_off, last_off ) \
1079
        for(last= 0; last < coefs; last++) { \
1080
            uint8_t *sig_ctx = significant_coeff_ctx_base + sig_off; \
1081
            if( get_cabac( CC, sig_ctx )) { \
1082
                uint8_t *last_ctx = last_coeff_ctx_base + last_off; \
1083
                index[coeff_count++] = last; \
1084
                if( get_cabac( CC, last_ctx ) ) { \
1085
                    last= max_coeff; \
1086
                    break; \
1087
                } \
1088
            } \
1089
        }\
1090
        if( last == max_coeff -1 ) {\
1091
            index[coeff_count++] = last;\
1092
        }
1093
        const uint8_t *sig_off = significant_coeff_flag_offset_8x8[MB_FIELD];
1094
#if ARCH_X86 && HAVE_7REGS && HAVE_EBX_AVAILABLE && !defined(BROKEN_RELOCATIONS)
1095
        coeff_count= decode_significance_8x8_x86(CC, significant_coeff_ctx_base, index, sig_off);
1096
    } else {
1097
        coeff_count= decode_significance_x86(CC, max_coeff, significant_coeff_ctx_base, index);
1098
#else
1099
        DECODE_SIGNIFICANCE( 63, sig_off[last], last_coeff_flag_offset_8x8[last] );
1100
    } else {
1101
        DECODE_SIGNIFICANCE( max_coeff - 1, last, last );
1102
#endif
1103
    }
1104
    assert(coeff_count > 0);
1105

    
1106
    if( is_dc ) {
1107
        if( cat == 0 )
1108
            h->cbp_table[h->mb_xy] |= 0x100;
1109
        else
1110
            h->cbp_table[h->mb_xy] |= 0x40 << n;
1111
    } else {
1112
        if( cat == 5 )
1113
            fill_rectangle(&h->non_zero_count_cache[scan8[n]], 2, 2, 8, coeff_count, 1);
1114
        else {
1115
            assert( cat == 1 || cat == 2 || cat == 4 );
1116
            h->non_zero_count_cache[scan8[n]] = coeff_count;
1117
        }
1118
    }
1119

    
1120
    do {
1121
        uint8_t *ctx = coeff_abs_level1_ctx[node_ctx] + abs_level_m1_ctx_base;
1122

    
1123
        int j= scantable[index[--coeff_count]];
1124

    
1125
        if( get_cabac( CC, ctx ) == 0 ) {
1126
            node_ctx = coeff_abs_level_transition[0][node_ctx];
1127
            if( is_dc ) {
1128
                block[j] = get_cabac_bypass_sign( CC, -1);
1129
            }else{
1130
                block[j] = (get_cabac_bypass_sign( CC, -qmul[j]) + 32) >> 6;
1131
            }
1132
        } else {
1133
            int coeff_abs = 2;
1134
            ctx = coeff_abs_levelgt1_ctx[node_ctx] + abs_level_m1_ctx_base;
1135
            node_ctx = coeff_abs_level_transition[1][node_ctx];
1136

    
1137
            while( coeff_abs < 15 && get_cabac( CC, ctx ) ) {
1138
                coeff_abs++;
1139
            }
1140

    
1141
            if( coeff_abs >= 15 ) {
1142
                int j = 0;
1143
                while( get_cabac_bypass( CC ) ) {
1144
                    j++;
1145
                }
1146

    
1147
                coeff_abs=1;
1148
                while( j-- ) {
1149
                    coeff_abs += coeff_abs + get_cabac_bypass( CC );
1150
                }
1151
                coeff_abs+= 14;
1152
            }
1153

    
1154
            if( is_dc ) {
1155
                block[j] = get_cabac_bypass_sign( CC, -coeff_abs );
1156
            }else{
1157
                block[j] = (get_cabac_bypass_sign( CC, -coeff_abs ) * qmul[j] + 32) >> 6;
1158
            }
1159
        }
1160
    } while( coeff_count );
1161
#ifdef CABAC_ON_STACK
1162
            h->cabac.range     = cc.range     ;
1163
            h->cabac.low       = cc.low       ;
1164
            h->cabac.bytestream= cc.bytestream;
1165
#endif
1166

    
1167
}
1168

    
1169
#if !CONFIG_SMALL
1170
static void decode_cabac_residual_dc( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff ) {
1171
    decode_cabac_residual_internal(h, block, cat, n, scantable, qmul, max_coeff, 1);
1172
}
1173

    
1174
static void decode_cabac_residual_nondc( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff ) {
1175
    decode_cabac_residual_internal(h, block, cat, n, scantable, qmul, max_coeff, 0);
1176
}
1177
#endif
1178

    
1179
static void decode_cabac_residual( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff ) {
1180
#if CONFIG_SMALL
1181
    decode_cabac_residual_internal(h, block, cat, n, scantable, qmul, max_coeff, cat == 0 || cat == 3);
1182
#else
1183
    if( cat == 0 || cat == 3 ) decode_cabac_residual_dc(h, block, cat, n, scantable, qmul, max_coeff);
1184
    else decode_cabac_residual_nondc(h, block, cat, n, scantable, qmul, max_coeff);
1185
#endif
1186
}
1187

    
1188
/**
1189
 * decodes a macroblock
1190
 * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
1191
 */
1192
int ff_h264_decode_mb_cabac(H264Context *h) {
1193
    MpegEncContext * const s = &h->s;
1194
    int mb_xy;
1195
    int mb_type, partition_count, cbp = 0;
1196
    int dct8x8_allowed= h->pps.transform_8x8_mode;
1197

    
1198
    mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;
1199

    
1200
    tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
1201
    if( h->slice_type_nos != FF_I_TYPE ) {
1202
        int skip;
1203
        /* a skipped mb needs the aff flag from the following mb */
1204
        if( FRAME_MBAFF && (s->mb_y&1)==1 && h->prev_mb_skipped )
1205
            skip = h->next_mb_skipped;
1206
        else
1207
            skip = decode_cabac_mb_skip( h, s->mb_x, s->mb_y );
1208
        /* read skip flags */
1209
        if( skip ) {
1210
            if( FRAME_MBAFF && (s->mb_y&1)==0 ){
1211
                s->current_picture.mb_type[mb_xy] = MB_TYPE_SKIP;
1212
                h->next_mb_skipped = decode_cabac_mb_skip( h, s->mb_x, s->mb_y+1 );
1213
                if(!h->next_mb_skipped)
1214
                    h->mb_mbaff = h->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h);
1215
            }
1216

    
1217
            decode_mb_skip(h);
1218

    
1219
            h->cbp_table[mb_xy] = 0;
1220
            h->chroma_pred_mode_table[mb_xy] = 0;
1221
            h->last_qscale_diff = 0;
1222

    
1223
            return 0;
1224

    
1225
        }
1226
    }
1227
    if(FRAME_MBAFF){
1228
        if( (s->mb_y&1) == 0 )
1229
            h->mb_mbaff =
1230
            h->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h);
1231
    }
1232

    
1233
    h->prev_mb_skipped = 0;
1234

    
1235
    fill_decode_neighbors(h, -(MB_FIELD));
1236

    
1237
    if( h->slice_type_nos == FF_B_TYPE ) {
1238
        int ctx = 0;
1239
        assert(h->slice_type_nos == FF_B_TYPE);
1240

    
1241
        if( !IS_DIRECT( h->left_type[0]-1 ) )
1242
            ctx++;
1243
        if( !IS_DIRECT( h->top_type-1 ) )
1244
            ctx++;
1245

    
1246
        if( !get_cabac_noinline( &h->cabac, &h->cabac_state[27+ctx] ) ){
1247
            mb_type= 0; /* B_Direct_16x16 */
1248
        }else if( !get_cabac_noinline( &h->cabac, &h->cabac_state[27+3] ) ) {
1249
            mb_type= 1 + get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ); /* B_L[01]_16x16 */
1250
        }else{
1251
            int bits;
1252
            bits = get_cabac_noinline( &h->cabac, &h->cabac_state[27+4] ) << 3;
1253
            bits|= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ) << 2;
1254
            bits|= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ) << 1;
1255
            bits|= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] );
1256
            if( bits < 8 ){
1257
                mb_type= bits + 3; /* B_Bi_16x16 through B_L1_L0_16x8 */
1258
            }else if( bits == 13 ){
1259
                mb_type= decode_cabac_intra_mb_type(h, 32, 0);
1260
                goto decode_intra_mb;
1261
            }else if( bits == 14 ){
1262
                mb_type= 11; /* B_L1_L0_8x16 */
1263
            }else if( bits == 15 ){
1264
                mb_type= 22; /* B_8x8 */
1265
            }else{
1266
                bits= ( bits<<1 ) | get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] );
1267
                mb_type= bits - 4; /* B_L0_Bi_* through B_Bi_Bi_* */
1268
            }
1269
        }
1270
            partition_count= b_mb_type_info[mb_type].partition_count;
1271
            mb_type=         b_mb_type_info[mb_type].type;
1272
    } else if( h->slice_type_nos == FF_P_TYPE ) {
1273
        if( get_cabac_noinline( &h->cabac, &h->cabac_state[14] ) == 0 ) {
1274
            /* P-type */
1275
            if( get_cabac_noinline( &h->cabac, &h->cabac_state[15] ) == 0 ) {
1276
                /* P_L0_D16x16, P_8x8 */
1277
                mb_type= 3 * get_cabac_noinline( &h->cabac, &h->cabac_state[16] );
1278
            } else {
1279
                /* P_L0_D8x16, P_L0_D16x8 */
1280
                mb_type= 2 - get_cabac_noinline( &h->cabac, &h->cabac_state[17] );
1281
            }
1282
            partition_count= p_mb_type_info[mb_type].partition_count;
1283
            mb_type=         p_mb_type_info[mb_type].type;
1284
        } else {
1285
            mb_type= decode_cabac_intra_mb_type(h, 17, 0);
1286
            goto decode_intra_mb;
1287
        }
1288
    } else {
1289
        mb_type= decode_cabac_intra_mb_type(h, 3, 1);
1290
        if(h->slice_type == FF_SI_TYPE && mb_type)
1291
            mb_type--;
1292
        assert(h->slice_type_nos == FF_I_TYPE);
1293
decode_intra_mb:
1294
        partition_count = 0;
1295
        cbp= i_mb_type_info[mb_type].cbp;
1296
        h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode;
1297
        mb_type= i_mb_type_info[mb_type].type;
1298
    }
1299
    if(MB_FIELD)
1300
        mb_type |= MB_TYPE_INTERLACED;
1301

    
1302
    h->slice_table[ mb_xy ]= h->slice_num;
1303

    
1304
    if(IS_INTRA_PCM(mb_type)) {
1305
        const uint8_t *ptr;
1306

    
1307
        // We assume these blocks are very rare so we do not optimize it.
1308
        // FIXME The two following lines get the bitstream position in the cabac
1309
        // decode, I think it should be done by a function in cabac.h (or cabac.c).
1310
        ptr= h->cabac.bytestream;
1311
        if(h->cabac.low&0x1) ptr--;
1312
        if(CABAC_BITS==16){
1313
            if(h->cabac.low&0x1FF) ptr--;
1314
        }
1315

    
1316
        // The pixels are stored in the same order as levels in h->mb array.
1317
        memcpy(h->mb, ptr, 256); ptr+=256;
1318
        if(CHROMA){
1319
            memcpy(h->mb+128, ptr, 128); ptr+=128;
1320
        }
1321

    
1322
        ff_init_cabac_decoder(&h->cabac, ptr, h->cabac.bytestream_end - ptr);
1323

    
1324
        // All blocks are present
1325
        h->cbp_table[mb_xy] = 0x1ef;
1326
        h->chroma_pred_mode_table[mb_xy] = 0;
1327
        // In deblocking, the quantizer is 0
1328
        s->current_picture.qscale_table[mb_xy]= 0;
1329
        // All coeffs are present
1330
        memset(h->non_zero_count[mb_xy], 16, 32);
1331
        s->current_picture.mb_type[mb_xy]= mb_type;
1332
        h->last_qscale_diff = 0;
1333
        return 0;
1334
    }
1335

    
1336
    if(MB_MBAFF){
1337
        h->ref_count[0] <<= 1;
1338
        h->ref_count[1] <<= 1;
1339
    }
1340

    
1341
    fill_decode_caches(h, mb_type);
1342

    
1343
    if( IS_INTRA( mb_type ) ) {
1344
        int i, pred_mode;
1345
        if( IS_INTRA4x4( mb_type ) ) {
1346
            if( dct8x8_allowed && get_cabac_noinline( &h->cabac, &h->cabac_state[399 + h->neighbor_transform_size] ) ) {
1347
                mb_type |= MB_TYPE_8x8DCT;
1348
                for( i = 0; i < 16; i+=4 ) {
1349
                    int pred = pred_intra_mode( h, i );
1350
                    int mode = decode_cabac_mb_intra4x4_pred_mode( h, pred );
1351
                    fill_rectangle( &h->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1 );
1352
                }
1353
            } else {
1354
                for( i = 0; i < 16; i++ ) {
1355
                    int pred = pred_intra_mode( h, i );
1356
                    h->intra4x4_pred_mode_cache[ scan8[i] ] = decode_cabac_mb_intra4x4_pred_mode( h, pred );
1357

    
1358
                //av_log( s->avctx, AV_LOG_ERROR, "i4x4 pred=%d mode=%d\n", pred, h->intra4x4_pred_mode_cache[ scan8[i] ] );
1359
                }
1360
            }
1361
            ff_h264_write_back_intra_pred_mode(h);
1362
            if( ff_h264_check_intra4x4_pred_mode(h) < 0 ) return -1;
1363
        } else {
1364
            h->intra16x16_pred_mode= ff_h264_check_intra_pred_mode( h, h->intra16x16_pred_mode );
1365
            if( h->intra16x16_pred_mode < 0 ) return -1;
1366
        }
1367
        if(CHROMA){
1368
            h->chroma_pred_mode_table[mb_xy] =
1369
            pred_mode                        = decode_cabac_mb_chroma_pre_mode( h );
1370

    
1371
            pred_mode= ff_h264_check_intra_pred_mode( h, pred_mode );
1372
            if( pred_mode < 0 ) return -1;
1373
            h->chroma_pred_mode= pred_mode;
1374
        }
1375
    } else if( partition_count == 4 ) {
1376
        int i, j, sub_partition_count[4], list, ref[2][4];
1377

    
1378
        if( h->slice_type_nos == FF_B_TYPE ) {
1379
            for( i = 0; i < 4; i++ ) {
1380
                h->sub_mb_type[i] = decode_cabac_b_mb_sub_type( h );
1381
                sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
1382
                h->sub_mb_type[i]=      b_sub_mb_type_info[ h->sub_mb_type[i] ].type;
1383
            }
1384
            if( IS_DIRECT(h->sub_mb_type[0] | h->sub_mb_type[1] |
1385
                          h->sub_mb_type[2] | h->sub_mb_type[3]) ) {
1386
                ff_h264_pred_direct_motion(h, &mb_type);
1387
                h->ref_cache[0][scan8[4]] =
1388
                h->ref_cache[1][scan8[4]] =
1389
                h->ref_cache[0][scan8[12]] =
1390
                h->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE;
1391
                    for( i = 0; i < 4; i++ )
1392
                        fill_rectangle( &h->direct_cache[scan8[4*i]], 2, 2, 8, (h->sub_mb_type[i]>>1)&0xFF, 1 );
1393
            }
1394
        } else {
1395
            for( i = 0; i < 4; i++ ) {
1396
                h->sub_mb_type[i] = decode_cabac_p_mb_sub_type( h );
1397
                sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
1398
                h->sub_mb_type[i]=      p_sub_mb_type_info[ h->sub_mb_type[i] ].type;
1399
            }
1400
        }
1401

    
1402
        for( list = 0; list < h->list_count; list++ ) {
1403
                for( i = 0; i < 4; i++ ) {
1404
                    if(IS_DIRECT(h->sub_mb_type[i])) continue;
1405
                    if(IS_DIR(h->sub_mb_type[i], 0, list)){
1406
                        if( h->ref_count[list] > 1 ){
1407
                            ref[list][i] = decode_cabac_mb_ref( h, list, 4*i );
1408
                            if(ref[list][i] >= (unsigned)h->ref_count[list]){
1409
                                av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref[list][i], h->ref_count[list]);
1410
                                return -1;
1411
                            }
1412
                        }else
1413
                            ref[list][i] = 0;
1414
                    } else {
1415
                        ref[list][i] = -1;
1416
                    }
1417
                                                       h->ref_cache[list][ scan8[4*i]+1 ]=
1418
                    h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i];
1419
                }
1420
        }
1421

    
1422
        if(dct8x8_allowed)
1423
            dct8x8_allowed = get_dct8x8_allowed(h);
1424

    
1425
        for(list=0; list<h->list_count; list++){
1426
            for(i=0; i<4; i++){
1427
                h->ref_cache[list][ scan8[4*i]   ]=h->ref_cache[list][ scan8[4*i]+1 ];
1428
                if(IS_DIRECT(h->sub_mb_type[i])){
1429
                    fill_rectangle(h->mvd_cache[list][scan8[4*i]], 2, 2, 8, 0, 4);
1430
                    continue;
1431
                }
1432

    
1433
                if(IS_DIR(h->sub_mb_type[i], 0, list) && !IS_DIRECT(h->sub_mb_type[i])){
1434
                    const int sub_mb_type= h->sub_mb_type[i];
1435
                    const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1;
1436
                    for(j=0; j<sub_partition_count[i]; j++){
1437
                        int mpx, mpy;
1438
                        int mx, my;
1439
                        const int index= 4*i + block_width*j;
1440
                        int16_t (* mv_cache)[2]= &h->mv_cache[list][ scan8[index] ];
1441
                        int16_t (* mvd_cache)[2]= &h->mvd_cache[list][ scan8[index] ];
1442
                        pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mpx, &mpy);
1443

    
1444
                        DECODE_CABAC_MB_MVD( h, list, index)
1445
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
1446

    
1447
                        mpx= abs(mpx-mx);
1448
                        mpy= abs(mpy-my);
1449
                        if(IS_SUB_8X8(sub_mb_type)){
1450
                            mv_cache[ 1 ][0]=
1451
                            mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;
1452
                            mv_cache[ 1 ][1]=
1453
                            mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;
1454

    
1455
                            mvd_cache[ 1 ][0]=
1456
                            mvd_cache[ 8 ][0]= mvd_cache[ 9 ][0]= mpx;
1457
                            mvd_cache[ 1 ][1]=
1458
                            mvd_cache[ 8 ][1]= mvd_cache[ 9 ][1]= mpy;
1459
                        }else if(IS_SUB_8X4(sub_mb_type)){
1460
                            mv_cache[ 1 ][0]= mx;
1461
                            mv_cache[ 1 ][1]= my;
1462

    
1463
                            mvd_cache[ 1 ][0]=  mpx;
1464
                            mvd_cache[ 1 ][1]= mpy;
1465
                        }else if(IS_SUB_4X8(sub_mb_type)){
1466
                            mv_cache[ 8 ][0]= mx;
1467
                            mv_cache[ 8 ][1]= my;
1468

    
1469
                            mvd_cache[ 8 ][0]= mpx;
1470
                            mvd_cache[ 8 ][1]= mpy;
1471
                        }
1472
                        mv_cache[ 0 ][0]= mx;
1473
                        mv_cache[ 0 ][1]= my;
1474

    
1475
                        mvd_cache[ 0 ][0]= mpx;
1476
                        mvd_cache[ 0 ][1]= mpy;
1477
                    }
1478
                }else{
1479
                    fill_rectangle(h->mv_cache [list][ scan8[4*i] ], 2, 2, 8, 0, 4);
1480
                    fill_rectangle(h->mvd_cache[list][ scan8[4*i] ], 2, 2, 8, 0, 4);
1481
                }
1482
            }
1483
        }
1484
    } else if( IS_DIRECT(mb_type) ) {
1485
        ff_h264_pred_direct_motion(h, &mb_type);
1486
        fill_rectangle(h->mvd_cache[0][scan8[0]], 4, 4, 8, 0, 4);
1487
        fill_rectangle(h->mvd_cache[1][scan8[0]], 4, 4, 8, 0, 4);
1488
        dct8x8_allowed &= h->sps.direct_8x8_inference_flag;
1489
    } else {
1490
        int list, mx, my, i, mpx, mpy;
1491
        if(IS_16X16(mb_type)){
1492
            for(list=0; list<h->list_count; list++){
1493
                if(IS_DIR(mb_type, 0, list)){
1494
                    int ref;
1495
                    if(h->ref_count[list] > 1){
1496
                        ref= decode_cabac_mb_ref(h, list, 0);
1497
                        if(ref >= (unsigned)h->ref_count[list]){
1498
                            av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, h->ref_count[list]);
1499
                            return -1;
1500
                        }
1501
                    }else
1502
                        ref=0;
1503
                        fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, ref, 1);
1504
                }else
1505
                    fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, (uint8_t)LIST_NOT_USED, 1); //FIXME factorize and the other fill_rect below too
1506
            }
1507
            for(list=0; list<h->list_count; list++){
1508
                if(IS_DIR(mb_type, 0, list)){
1509
                    pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mpx, &mpy);
1510
                    DECODE_CABAC_MB_MVD( h, list, 0)
1511
                    tprintf(s->avctx, "final mv:%d %d\n", mx, my);
1512

    
1513
                    fill_rectangle(h->mvd_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(abs(mx-mpx),abs(my-mpy)), 4);
1514
                    fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4);
1515
                }else
1516
                    fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, 0, 4);
1517
            }
1518
        }
1519
        else if(IS_16X8(mb_type)){
1520
            for(list=0; list<h->list_count; list++){
1521
                    for(i=0; i<2; i++){
1522
                        if(IS_DIR(mb_type, i, list)){
1523
                            int ref;
1524
                            if(h->ref_count[list] > 1){
1525
                                ref= decode_cabac_mb_ref( h, list, 8*i );
1526
                                if(ref >= (unsigned)h->ref_count[list]){
1527
                                    av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, h->ref_count[list]);
1528
                                    return -1;
1529
                                }
1530
                            }else
1531
                                ref=0;
1532
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, ref, 1);
1533
                        }else
1534
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, (LIST_NOT_USED&0xFF), 1);
1535
                    }
1536
            }
1537
            for(list=0; list<h->list_count; list++){
1538
                for(i=0; i<2; i++){
1539
                    if(IS_DIR(mb_type, i, list)){
1540
                        pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mpx, &mpy);
1541
                        DECODE_CABAC_MB_MVD( h, list, 8*i)
1542
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
1543

    
1544
                        fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(abs(mx-mpx),abs(my-mpy)), 4);
1545
                        fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx,my), 4);
1546
                    }else{
1547
                        fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4);
1548
                        fill_rectangle(h-> mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4);
1549
                    }
1550
                }
1551
            }
1552
        }else{
1553
            assert(IS_8X16(mb_type));
1554
            for(list=0; list<h->list_count; list++){
1555
                    for(i=0; i<2; i++){
1556
                        if(IS_DIR(mb_type, i, list)){ //FIXME optimize
1557
                            int ref;
1558
                            if(h->ref_count[list] > 1){
1559
                                ref= decode_cabac_mb_ref( h, list, 4*i );
1560
                                if(ref >= (unsigned)h->ref_count[list]){
1561
                                    av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, h->ref_count[list]);
1562
                                    return -1;
1563
                                }
1564
                            }else
1565
                                ref=0;
1566
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, ref, 1);
1567
                        }else
1568
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, (LIST_NOT_USED&0xFF), 1);
1569
                    }
1570
            }
1571
            for(list=0; list<h->list_count; list++){
1572
                for(i=0; i<2; i++){
1573
                    if(IS_DIR(mb_type, i, list)){
1574
                        pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mpx, &mpy);
1575
                        DECODE_CABAC_MB_MVD( h, list, 4*i)
1576

    
1577
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
1578
                        fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(abs(mx-mpx),abs(my-mpy)), 4);
1579
                        fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx,my), 4);
1580
                    }else{
1581
                        fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4);
1582
                        fill_rectangle(h-> mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4);
1583
                    }
1584
                }
1585
            }
1586
        }
1587
    }
1588

    
1589
   if( IS_INTER( mb_type ) ) {
1590
        h->chroma_pred_mode_table[mb_xy] = 0;
1591
        write_back_motion( h, mb_type );
1592
   }
1593

    
1594
    if( !IS_INTRA16x16( mb_type ) ) {
1595
        cbp  = decode_cabac_mb_cbp_luma( h );
1596
        if(CHROMA)
1597
            cbp |= decode_cabac_mb_cbp_chroma( h ) << 4;
1598
    }
1599

    
1600
    h->cbp_table[mb_xy] = h->cbp = cbp;
1601

    
1602
    if( dct8x8_allowed && (cbp&15) && !IS_INTRA( mb_type ) ) {
1603
        mb_type |= MB_TYPE_8x8DCT * get_cabac_noinline( &h->cabac, &h->cabac_state[399 + h->neighbor_transform_size] );
1604
    }
1605
    s->current_picture.mb_type[mb_xy]= mb_type;
1606

    
1607
    if( cbp || IS_INTRA16x16( mb_type ) ) {
1608
        const uint8_t *scan, *scan8x8, *dc_scan;
1609
        const uint32_t *qmul;
1610

    
1611
        if(IS_INTERLACED(mb_type)){
1612
            scan8x8= s->qscale ? h->field_scan8x8 : h->field_scan8x8_q0;
1613
            scan= s->qscale ? h->field_scan : h->field_scan_q0;
1614
            dc_scan= luma_dc_field_scan;
1615
        }else{
1616
            scan8x8= s->qscale ? h->zigzag_scan8x8 : h->zigzag_scan8x8_q0;
1617
            scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
1618
            dc_scan= luma_dc_zigzag_scan;
1619
        }
1620

    
1621
        // decode_cabac_mb_dqp
1622
        if(get_cabac_noinline( &h->cabac, &h->cabac_state[60 + (h->last_qscale_diff != 0)])){
1623
            int val = 1;
1624
            int ctx= 2;
1625

    
1626
            while( get_cabac_noinline( &h->cabac, &h->cabac_state[60 + ctx] ) ) {
1627
                ctx= 3;
1628
                val++;
1629
                if(val > 102){ //prevent infinite loop
1630
                    av_log(h->s.avctx, AV_LOG_ERROR, "cabac decode of qscale diff failed at %d %d\n", s->mb_x, s->mb_y);
1631
                    return -1;
1632
                }
1633
            }
1634

    
1635
            if( val&0x01 )
1636
                val=   (val + 1)>>1 ;
1637
            else
1638
                val= -((val + 1)>>1);
1639
            h->last_qscale_diff = val;
1640
            s->qscale += val;
1641
            if(((unsigned)s->qscale) > 51){
1642
                if(s->qscale<0) s->qscale+= 52;
1643
                else            s->qscale-= 52;
1644
            }
1645
            h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
1646
            h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
1647
        }else
1648
            h->last_qscale_diff=0;
1649

    
1650
        if( IS_INTRA16x16( mb_type ) ) {
1651
            int i;
1652
            //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 DC\n" );
1653
            decode_cabac_residual( h, h->mb, 0, 0, dc_scan, NULL, 16);
1654

    
1655
            if( cbp&15 ) {
1656
                qmul = h->dequant4_coeff[0][s->qscale];
1657
                for( i = 0; i < 16; i++ ) {
1658
                    //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 AC:%d\n", i );
1659
                    decode_cabac_residual(h, h->mb + 16*i, 1, i, scan + 1, qmul, 15);
1660
                }
1661
            } else {
1662
                fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1);
1663
            }
1664
        } else {
1665
            int i8x8, i4x4;
1666
            for( i8x8 = 0; i8x8 < 4; i8x8++ ) {
1667
                if( cbp & (1<<i8x8) ) {
1668
                    if( IS_8x8DCT(mb_type) ) {
1669
                        decode_cabac_residual(h, h->mb + 64*i8x8, 5, 4*i8x8,
1670
                            scan8x8, h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 64);
1671
                    } else {
1672
                        qmul = h->dequant4_coeff[IS_INTRA( mb_type ) ? 0:3][s->qscale];
1673
                        for( i4x4 = 0; i4x4 < 4; i4x4++ ) {
1674
                            const int index = 4*i8x8 + i4x4;
1675
                            //av_log( s->avctx, AV_LOG_ERROR, "Luma4x4: %d\n", index );
1676
//START_TIMER
1677
                            decode_cabac_residual(h, h->mb + 16*index, 2, index, scan, qmul, 16);
1678
//STOP_TIMER("decode_residual")
1679
                        }
1680
                    }
1681
                } else {
1682
                    uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
1683
                    nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
1684
                }
1685
            }
1686
        }
1687

    
1688
        if( cbp&0x30 ){
1689
            int c;
1690
            for( c = 0; c < 2; c++ ) {
1691
                //av_log( s->avctx, AV_LOG_ERROR, "INTRA C%d-DC\n",c );
1692
                decode_cabac_residual(h, h->mb + 256 + 16*4*c, 3, c, chroma_dc_scan, NULL, 4);
1693
            }
1694
        }
1695

    
1696
        if( cbp&0x20 ) {
1697
            int c, i;
1698
            for( c = 0; c < 2; c++ ) {
1699
                qmul = h->dequant4_coeff[c+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[c]];
1700
                for( i = 0; i < 4; i++ ) {
1701
                    const int index = 16 + 4 * c + i;
1702
                    //av_log( s->avctx, AV_LOG_ERROR, "INTRA C%d-AC %d\n",c, index - 16 );
1703
                    decode_cabac_residual(h, h->mb + 16*index, 4, index, scan + 1, qmul, 15);
1704
                }
1705
            }
1706
        } else {
1707
            uint8_t * const nnz= &h->non_zero_count_cache[0];
1708
            nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
1709
            nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
1710
        }
1711
    } else {
1712
        uint8_t * const nnz= &h->non_zero_count_cache[0];
1713
        fill_rectangle(&nnz[scan8[0]], 4, 4, 8, 0, 1);
1714
        nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
1715
        nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
1716
        h->last_qscale_diff = 0;
1717
    }
1718

    
1719
    s->current_picture.qscale_table[mb_xy]= s->qscale;
1720
    write_back_non_zero_count(h);
1721

    
1722
    if(MB_MBAFF){
1723
        h->ref_count[0] >>= 1;
1724
        h->ref_count[1] >>= 1;
1725
    }
1726

    
1727
    return 0;
1728
}