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ffmpeg / libavcodec / h264_cabac.c @ 19fb234e

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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
 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
21

    
22
/**
23
 * @file
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 * 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, int *mvda) {
913
    int mvd;
914

    
915
    if(!get_cabac(&h->cabac, &h->cabac_state[ctxbase+((amvd-3)>>(INT_BIT-1))+((amvd-33)>>(INT_BIT-1))+2])){
916
//    if(!get_cabac(&h->cabac, &h->cabac_state[ctxbase+(amvd>2)+(amvd>32)])){
917
        *mvda= 0;
918
        return 0;
919
    }
920

    
921
    mvd= 1;
922
    ctxbase+= 3;
923
    while( mvd < 9 && get_cabac( &h->cabac, &h->cabac_state[ctxbase] ) ) {
924
        if( mvd < 4 )
925
            ctxbase++;
926
        mvd++;
927
    }
928

    
929
    if( mvd >= 9 ) {
930
        int k = 3;
931
        while( get_cabac_bypass( &h->cabac ) ) {
932
            mvd += 1 << k;
933
            k++;
934
            if(k>24){
935
                av_log(h->s.avctx, AV_LOG_ERROR, "overflow in decode_cabac_mb_mvd\n");
936
                return INT_MIN;
937
            }
938
        }
939
        while( k-- ) {
940
            mvd += get_cabac_bypass( &h->cabac )<<k;
941
        }
942
        *mvda=mvd < 70 ? mvd : 70;
943
    }else
944
        *mvda=mvd;
945
    return get_cabac_bypass_sign( &h->cabac, -mvd );
946
}
947

    
948
#define DECODE_CABAC_MB_MVD( h,  list,  n )\
949
{\
950
    int amvd0 = h->mvd_cache[list][scan8[n] - 1][0] +\
951
                h->mvd_cache[list][scan8[n] - 8][0];\
952
    int amvd1 = h->mvd_cache[list][scan8[n] - 1][1] +\
953
                h->mvd_cache[list][scan8[n] - 8][1];\
954
\
955
    mx += decode_cabac_mb_mvd( h, 40, amvd0, &mpx );\
956
    my += decode_cabac_mb_mvd( h, 47, amvd1, &mpy );\
957
}
958

    
959
static av_always_inline int get_cabac_cbf_ctx( H264Context *h, int cat, int idx, int is_dc ) {
960
    int nza, nzb;
961
    int ctx = 0;
962

    
963
    if( is_dc ) {
964
        if( cat == 0 ) {
965
            nza = h->left_cbp&0x100;
966
            nzb = h-> top_cbp&0x100;
967
        } else {
968
            nza = (h->left_cbp>>(6+idx))&0x01;
969
            nzb = (h-> top_cbp>>(6+idx))&0x01;
970
        }
971
    } else {
972
        assert(cat == 1 || cat == 2 || cat == 4);
973
        nza = h->non_zero_count_cache[scan8[idx] - 1];
974
        nzb = h->non_zero_count_cache[scan8[idx] - 8];
975
    }
976

    
977
    if( nza > 0 )
978
        ctx++;
979

    
980
    if( nzb > 0 )
981
        ctx += 2;
982

    
983
    return ctx + 4 * cat;
984
}
985

    
986
DECLARE_ASM_CONST(1, uint8_t, last_coeff_flag_offset_8x8)[63] = {
987
    0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
988
    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
989
    3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
990
    5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8
991
};
992

    
993
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 ) {
994
    static const int significant_coeff_flag_offset[2][6] = {
995
      { 105+0, 105+15, 105+29, 105+44, 105+47, 402 },
996
      { 277+0, 277+15, 277+29, 277+44, 277+47, 436 }
997
    };
998
    static const int last_coeff_flag_offset[2][6] = {
999
      { 166+0, 166+15, 166+29, 166+44, 166+47, 417 },
1000
      { 338+0, 338+15, 338+29, 338+44, 338+47, 451 }
1001
    };
1002
    static const int coeff_abs_level_m1_offset[6] = {
1003
        227+0, 227+10, 227+20, 227+30, 227+39, 426
1004
    };
1005
    static const uint8_t significant_coeff_flag_offset_8x8[2][63] = {
1006
      { 0, 1, 2, 3, 4, 5, 5, 4, 4, 3, 3, 4, 4, 4, 5, 5,
1007
        4, 4, 4, 4, 3, 3, 6, 7, 7, 7, 8, 9,10, 9, 8, 7,
1008
        7, 6,11,12,13,11, 6, 7, 8, 9,14,10, 9, 8, 6,11,
1009
       12,13,11, 6, 9,14,10, 9,11,12,13,11,14,10,12 },
1010
      { 0, 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 7, 7, 8, 4, 5,
1011
        6, 9,10,10, 8,11,12,11, 9, 9,10,10, 8,11,12,11,
1012
        9, 9,10,10, 8,11,12,11, 9, 9,10,10, 8,13,13, 9,
1013
        9,10,10, 8,13,13, 9, 9,10,10,14,14,14,14,14 }
1014
    };
1015
    /* node ctx: 0..3: abslevel1 (with abslevelgt1 == 0).
1016
     * 4..7: abslevelgt1 + 3 (and abslevel1 doesn't matter).
1017
     * map node ctx => cabac ctx for level=1 */
1018
    static const uint8_t coeff_abs_level1_ctx[8] = { 1, 2, 3, 4, 0, 0, 0, 0 };
1019
    /* map node ctx => cabac ctx for level>1 */
1020
    static const uint8_t coeff_abs_levelgt1_ctx[8] = { 5, 5, 5, 5, 6, 7, 8, 9 };
1021
    static const uint8_t coeff_abs_level_transition[2][8] = {
1022
    /* update node ctx after decoding a level=1 */
1023
        { 1, 2, 3, 3, 4, 5, 6, 7 },
1024
    /* update node ctx after decoding a level>1 */
1025
        { 4, 4, 4, 4, 5, 6, 7, 7 }
1026
    };
1027

    
1028
    int index[64];
1029

    
1030
    int av_unused last;
1031
    int coeff_count = 0;
1032
    int node_ctx = 0;
1033

    
1034
    uint8_t *significant_coeff_ctx_base;
1035
    uint8_t *last_coeff_ctx_base;
1036
    uint8_t *abs_level_m1_ctx_base;
1037

    
1038
#if !ARCH_X86
1039
#define CABAC_ON_STACK
1040
#endif
1041
#ifdef CABAC_ON_STACK
1042
#define CC &cc
1043
    CABACContext cc;
1044
    cc.range     = h->cabac.range;
1045
    cc.low       = h->cabac.low;
1046
    cc.bytestream= h->cabac.bytestream;
1047
#else
1048
#define CC &h->cabac
1049
#endif
1050

    
1051

    
1052
    /* cat: 0-> DC 16x16  n = 0
1053
     *      1-> AC 16x16  n = luma4x4idx
1054
     *      2-> Luma4x4   n = luma4x4idx
1055
     *      3-> DC Chroma n = iCbCr
1056
     *      4-> AC Chroma n = 16 + 4 * iCbCr + chroma4x4idx
1057
     *      5-> Luma8x8   n = 4 * luma8x8idx
1058
     */
1059

    
1060
    /* read coded block flag */
1061
    if( is_dc || cat != 5 ) {
1062
        if( get_cabac( CC, &h->cabac_state[85 + get_cabac_cbf_ctx( h, cat, n, is_dc ) ] ) == 0 ) {
1063
            if( !is_dc )
1064
                h->non_zero_count_cache[scan8[n]] = 0;
1065

    
1066
#ifdef CABAC_ON_STACK
1067
            h->cabac.range     = cc.range     ;
1068
            h->cabac.low       = cc.low       ;
1069
            h->cabac.bytestream= cc.bytestream;
1070
#endif
1071
            return;
1072
        }
1073
    }
1074

    
1075
    significant_coeff_ctx_base = h->cabac_state
1076
        + significant_coeff_flag_offset[MB_FIELD][cat];
1077
    last_coeff_ctx_base = h->cabac_state
1078
        + last_coeff_flag_offset[MB_FIELD][cat];
1079
    abs_level_m1_ctx_base = h->cabac_state
1080
        + coeff_abs_level_m1_offset[cat];
1081

    
1082
    if( !is_dc && cat == 5 ) {
1083
#define DECODE_SIGNIFICANCE( coefs, sig_off, last_off ) \
1084
        for(last= 0; last < coefs; last++) { \
1085
            uint8_t *sig_ctx = significant_coeff_ctx_base + sig_off; \
1086
            if( get_cabac( CC, sig_ctx )) { \
1087
                uint8_t *last_ctx = last_coeff_ctx_base + last_off; \
1088
                index[coeff_count++] = last; \
1089
                if( get_cabac( CC, last_ctx ) ) { \
1090
                    last= max_coeff; \
1091
                    break; \
1092
                } \
1093
            } \
1094
        }\
1095
        if( last == max_coeff -1 ) {\
1096
            index[coeff_count++] = last;\
1097
        }
1098
        const uint8_t *sig_off = significant_coeff_flag_offset_8x8[MB_FIELD];
1099
#if ARCH_X86 && HAVE_7REGS && HAVE_EBX_AVAILABLE && !defined(BROKEN_RELOCATIONS)
1100
        coeff_count= decode_significance_8x8_x86(CC, significant_coeff_ctx_base, index, sig_off);
1101
    } else {
1102
        coeff_count= decode_significance_x86(CC, max_coeff, significant_coeff_ctx_base, index);
1103
#else
1104
        DECODE_SIGNIFICANCE( 63, sig_off[last], last_coeff_flag_offset_8x8[last] );
1105
    } else {
1106
        DECODE_SIGNIFICANCE( max_coeff - 1, last, last );
1107
#endif
1108
    }
1109
    assert(coeff_count > 0);
1110

    
1111
    if( is_dc ) {
1112
        if( cat == 0 )
1113
            h->cbp_table[h->mb_xy] |= 0x100;
1114
        else
1115
            h->cbp_table[h->mb_xy] |= 0x40 << n;
1116
    } else {
1117
        if( cat == 5 )
1118
            fill_rectangle(&h->non_zero_count_cache[scan8[n]], 2, 2, 8, coeff_count, 1);
1119
        else {
1120
            assert( cat == 1 || cat == 2 || cat == 4 );
1121
            h->non_zero_count_cache[scan8[n]] = coeff_count;
1122
        }
1123
    }
1124

    
1125
    do {
1126
        uint8_t *ctx = coeff_abs_level1_ctx[node_ctx] + abs_level_m1_ctx_base;
1127

    
1128
        int j= scantable[index[--coeff_count]];
1129

    
1130
        if( get_cabac( CC, ctx ) == 0 ) {
1131
            node_ctx = coeff_abs_level_transition[0][node_ctx];
1132
            if( is_dc ) {
1133
                block[j] = get_cabac_bypass_sign( CC, -1);
1134
            }else{
1135
                block[j] = (get_cabac_bypass_sign( CC, -qmul[j]) + 32) >> 6;
1136
            }
1137
        } else {
1138
            int coeff_abs = 2;
1139
            ctx = coeff_abs_levelgt1_ctx[node_ctx] + abs_level_m1_ctx_base;
1140
            node_ctx = coeff_abs_level_transition[1][node_ctx];
1141

    
1142
            while( coeff_abs < 15 && get_cabac( CC, ctx ) ) {
1143
                coeff_abs++;
1144
            }
1145

    
1146
            if( coeff_abs >= 15 ) {
1147
                int j = 0;
1148
                while( get_cabac_bypass( CC ) ) {
1149
                    j++;
1150
                }
1151

    
1152
                coeff_abs=1;
1153
                while( j-- ) {
1154
                    coeff_abs += coeff_abs + get_cabac_bypass( CC );
1155
                }
1156
                coeff_abs+= 14;
1157
            }
1158

    
1159
            if( is_dc ) {
1160
                block[j] = get_cabac_bypass_sign( CC, -coeff_abs );
1161
            }else{
1162
                block[j] = (get_cabac_bypass_sign( CC, -coeff_abs ) * qmul[j] + 32) >> 6;
1163
            }
1164
        }
1165
    } while( coeff_count );
1166
#ifdef CABAC_ON_STACK
1167
            h->cabac.range     = cc.range     ;
1168
            h->cabac.low       = cc.low       ;
1169
            h->cabac.bytestream= cc.bytestream;
1170
#endif
1171

    
1172
}
1173

    
1174
static void decode_cabac_residual_dc( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, int max_coeff ) {
1175
    decode_cabac_residual_internal(h, block, cat, n, scantable, NULL, max_coeff, 1);
1176
}
1177

    
1178
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 ) {
1179
    decode_cabac_residual_internal(h, block, cat, n, scantable, qmul, max_coeff, 0);
1180
}
1181

    
1182
/**
1183
 * decodes a macroblock
1184
 * @return 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
1185
 */
1186
int ff_h264_decode_mb_cabac(H264Context *h) {
1187
    MpegEncContext * const s = &h->s;
1188
    int mb_xy;
1189
    int mb_type, partition_count, cbp = 0;
1190
    int dct8x8_allowed= h->pps.transform_8x8_mode;
1191

    
1192
    mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;
1193

    
1194
    tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
1195
    if( h->slice_type_nos != FF_I_TYPE ) {
1196
        int skip;
1197
        /* a skipped mb needs the aff flag from the following mb */
1198
        if( FRAME_MBAFF && (s->mb_y&1)==1 && h->prev_mb_skipped )
1199
            skip = h->next_mb_skipped;
1200
        else
1201
            skip = decode_cabac_mb_skip( h, s->mb_x, s->mb_y );
1202
        /* read skip flags */
1203
        if( skip ) {
1204
            if( FRAME_MBAFF && (s->mb_y&1)==0 ){
1205
                s->current_picture.mb_type[mb_xy] = MB_TYPE_SKIP;
1206
                h->next_mb_skipped = decode_cabac_mb_skip( h, s->mb_x, s->mb_y+1 );
1207
                if(!h->next_mb_skipped)
1208
                    h->mb_mbaff = h->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h);
1209
            }
1210

    
1211
            decode_mb_skip(h);
1212

    
1213
            h->cbp_table[mb_xy] = 0;
1214
            h->chroma_pred_mode_table[mb_xy] = 0;
1215
            h->last_qscale_diff = 0;
1216

    
1217
            return 0;
1218

    
1219
        }
1220
    }
1221
    if(FRAME_MBAFF){
1222
        if( (s->mb_y&1) == 0 )
1223
            h->mb_mbaff =
1224
            h->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h);
1225
    }
1226

    
1227
    h->prev_mb_skipped = 0;
1228

    
1229
    fill_decode_neighbors(h, -(MB_FIELD));
1230

    
1231
    if( h->slice_type_nos == FF_B_TYPE ) {
1232
        int ctx = 0;
1233
        assert(h->slice_type_nos == FF_B_TYPE);
1234

    
1235
        if( !IS_DIRECT( h->left_type[0]-1 ) )
1236
            ctx++;
1237
        if( !IS_DIRECT( h->top_type-1 ) )
1238
            ctx++;
1239

    
1240
        if( !get_cabac_noinline( &h->cabac, &h->cabac_state[27+ctx] ) ){
1241
            mb_type= 0; /* B_Direct_16x16 */
1242
        }else if( !get_cabac_noinline( &h->cabac, &h->cabac_state[27+3] ) ) {
1243
            mb_type= 1 + get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ); /* B_L[01]_16x16 */
1244
        }else{
1245
            int bits;
1246
            bits = get_cabac_noinline( &h->cabac, &h->cabac_state[27+4] ) << 3;
1247
            bits+= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ) << 2;
1248
            bits+= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ) << 1;
1249
            bits+= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] );
1250
            if( bits < 8 ){
1251
                mb_type= bits + 3; /* B_Bi_16x16 through B_L1_L0_16x8 */
1252
            }else if( bits == 13 ){
1253
                mb_type= decode_cabac_intra_mb_type(h, 32, 0);
1254
                goto decode_intra_mb;
1255
            }else if( bits == 14 ){
1256
                mb_type= 11; /* B_L1_L0_8x16 */
1257
            }else if( bits == 15 ){
1258
                mb_type= 22; /* B_8x8 */
1259
            }else{
1260
                bits= ( bits<<1 ) + get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] );
1261
                mb_type= bits - 4; /* B_L0_Bi_* through B_Bi_Bi_* */
1262
            }
1263
        }
1264
            partition_count= b_mb_type_info[mb_type].partition_count;
1265
            mb_type=         b_mb_type_info[mb_type].type;
1266
    } else if( h->slice_type_nos == FF_P_TYPE ) {
1267
        if( get_cabac_noinline( &h->cabac, &h->cabac_state[14] ) == 0 ) {
1268
            /* P-type */
1269
            if( get_cabac_noinline( &h->cabac, &h->cabac_state[15] ) == 0 ) {
1270
                /* P_L0_D16x16, P_8x8 */
1271
                mb_type= 3 * get_cabac_noinline( &h->cabac, &h->cabac_state[16] );
1272
            } else {
1273
                /* P_L0_D8x16, P_L0_D16x8 */
1274
                mb_type= 2 - get_cabac_noinline( &h->cabac, &h->cabac_state[17] );
1275
            }
1276
            partition_count= p_mb_type_info[mb_type].partition_count;
1277
            mb_type=         p_mb_type_info[mb_type].type;
1278
        } else {
1279
            mb_type= decode_cabac_intra_mb_type(h, 17, 0);
1280
            goto decode_intra_mb;
1281
        }
1282
    } else {
1283
        mb_type= decode_cabac_intra_mb_type(h, 3, 1);
1284
        if(h->slice_type == FF_SI_TYPE && mb_type)
1285
            mb_type--;
1286
        assert(h->slice_type_nos == FF_I_TYPE);
1287
decode_intra_mb:
1288
        partition_count = 0;
1289
        cbp= i_mb_type_info[mb_type].cbp;
1290
        h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode;
1291
        mb_type= i_mb_type_info[mb_type].type;
1292
    }
1293
    if(MB_FIELD)
1294
        mb_type |= MB_TYPE_INTERLACED;
1295

    
1296
    h->slice_table[ mb_xy ]= h->slice_num;
1297

    
1298
    if(IS_INTRA_PCM(mb_type)) {
1299
        const uint8_t *ptr;
1300

    
1301
        // We assume these blocks are very rare so we do not optimize it.
1302
        // FIXME The two following lines get the bitstream position in the cabac
1303
        // decode, I think it should be done by a function in cabac.h (or cabac.c).
1304
        ptr= h->cabac.bytestream;
1305
        if(h->cabac.low&0x1) ptr--;
1306
        if(CABAC_BITS==16){
1307
            if(h->cabac.low&0x1FF) ptr--;
1308
        }
1309

    
1310
        // The pixels are stored in the same order as levels in h->mb array.
1311
        memcpy(h->mb, ptr, 256); ptr+=256;
1312
        if(CHROMA){
1313
            memcpy(h->mb+128, ptr, 128); ptr+=128;
1314
        }
1315

    
1316
        ff_init_cabac_decoder(&h->cabac, ptr, h->cabac.bytestream_end - ptr);
1317

    
1318
        // All blocks are present
1319
        h->cbp_table[mb_xy] = 0x1ef;
1320
        h->chroma_pred_mode_table[mb_xy] = 0;
1321
        // In deblocking, the quantizer is 0
1322
        s->current_picture.qscale_table[mb_xy]= 0;
1323
        // All coeffs are present
1324
        memset(h->non_zero_count[mb_xy], 16, 32);
1325
        s->current_picture.mb_type[mb_xy]= mb_type;
1326
        h->last_qscale_diff = 0;
1327
        return 0;
1328
    }
1329

    
1330
    if(MB_MBAFF){
1331
        h->ref_count[0] <<= 1;
1332
        h->ref_count[1] <<= 1;
1333
    }
1334

    
1335
    fill_decode_caches(h, mb_type);
1336

    
1337
    if( IS_INTRA( mb_type ) ) {
1338
        int i, pred_mode;
1339
        if( IS_INTRA4x4( mb_type ) ) {
1340
            if( dct8x8_allowed && get_cabac_noinline( &h->cabac, &h->cabac_state[399 + h->neighbor_transform_size] ) ) {
1341
                mb_type |= MB_TYPE_8x8DCT;
1342
                for( i = 0; i < 16; i+=4 ) {
1343
                    int pred = pred_intra_mode( h, i );
1344
                    int mode = decode_cabac_mb_intra4x4_pred_mode( h, pred );
1345
                    fill_rectangle( &h->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1 );
1346
                }
1347
            } else {
1348
                for( i = 0; i < 16; i++ ) {
1349
                    int pred = pred_intra_mode( h, i );
1350
                    h->intra4x4_pred_mode_cache[ scan8[i] ] = decode_cabac_mb_intra4x4_pred_mode( h, pred );
1351

    
1352
                //av_log( s->avctx, AV_LOG_ERROR, "i4x4 pred=%d mode=%d\n", pred, h->intra4x4_pred_mode_cache[ scan8[i] ] );
1353
                }
1354
            }
1355
            ff_h264_write_back_intra_pred_mode(h);
1356
            if( ff_h264_check_intra4x4_pred_mode(h) < 0 ) return -1;
1357
        } else {
1358
            h->intra16x16_pred_mode= ff_h264_check_intra_pred_mode( h, h->intra16x16_pred_mode );
1359
            if( h->intra16x16_pred_mode < 0 ) return -1;
1360
        }
1361
        if(CHROMA){
1362
            h->chroma_pred_mode_table[mb_xy] =
1363
            pred_mode                        = decode_cabac_mb_chroma_pre_mode( h );
1364

    
1365
            pred_mode= ff_h264_check_intra_pred_mode( h, pred_mode );
1366
            if( pred_mode < 0 ) return -1;
1367
            h->chroma_pred_mode= pred_mode;
1368
        }
1369
    } else if( partition_count == 4 ) {
1370
        int i, j, sub_partition_count[4], list, ref[2][4];
1371

    
1372
        if( h->slice_type_nos == FF_B_TYPE ) {
1373
            for( i = 0; i < 4; i++ ) {
1374
                h->sub_mb_type[i] = decode_cabac_b_mb_sub_type( h );
1375
                sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
1376
                h->sub_mb_type[i]=      b_sub_mb_type_info[ h->sub_mb_type[i] ].type;
1377
            }
1378
            if( IS_DIRECT(h->sub_mb_type[0] | h->sub_mb_type[1] |
1379
                          h->sub_mb_type[2] | h->sub_mb_type[3]) ) {
1380
                ff_h264_pred_direct_motion(h, &mb_type);
1381
                h->ref_cache[0][scan8[4]] =
1382
                h->ref_cache[1][scan8[4]] =
1383
                h->ref_cache[0][scan8[12]] =
1384
                h->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE;
1385
                    for( i = 0; i < 4; i++ )
1386
                        fill_rectangle( &h->direct_cache[scan8[4*i]], 2, 2, 8, (h->sub_mb_type[i]>>1)&0xFF, 1 );
1387
            }
1388
        } else {
1389
            for( i = 0; i < 4; i++ ) {
1390
                h->sub_mb_type[i] = decode_cabac_p_mb_sub_type( h );
1391
                sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
1392
                h->sub_mb_type[i]=      p_sub_mb_type_info[ h->sub_mb_type[i] ].type;
1393
            }
1394
        }
1395

    
1396
        for( list = 0; list < h->list_count; list++ ) {
1397
                for( i = 0; i < 4; i++ ) {
1398
                    if(IS_DIRECT(h->sub_mb_type[i])) continue;
1399
                    if(IS_DIR(h->sub_mb_type[i], 0, list)){
1400
                        if( h->ref_count[list] > 1 ){
1401
                            ref[list][i] = decode_cabac_mb_ref( h, list, 4*i );
1402
                            if(ref[list][i] >= (unsigned)h->ref_count[list]){
1403
                                av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref[list][i], h->ref_count[list]);
1404
                                return -1;
1405
                            }
1406
                        }else
1407
                            ref[list][i] = 0;
1408
                    } else {
1409
                        ref[list][i] = -1;
1410
                    }
1411
                                                       h->ref_cache[list][ scan8[4*i]+1 ]=
1412
                    h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i];
1413
                }
1414
        }
1415

    
1416
        if(dct8x8_allowed)
1417
            dct8x8_allowed = get_dct8x8_allowed(h);
1418

    
1419
        for(list=0; list<h->list_count; list++){
1420
            for(i=0; i<4; i++){
1421
                h->ref_cache[list][ scan8[4*i]   ]=h->ref_cache[list][ scan8[4*i]+1 ];
1422
                if(IS_DIRECT(h->sub_mb_type[i])){
1423
                    fill_rectangle(h->mvd_cache[list][scan8[4*i]], 2, 2, 8, 0, 2);
1424
                    continue;
1425
                }
1426

    
1427
                if(IS_DIR(h->sub_mb_type[i], 0, list) && !IS_DIRECT(h->sub_mb_type[i])){
1428
                    const int sub_mb_type= h->sub_mb_type[i];
1429
                    const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1;
1430
                    for(j=0; j<sub_partition_count[i]; j++){
1431
                        int mpx, mpy;
1432
                        int mx, my;
1433
                        const int index= 4*i + block_width*j;
1434
                        int16_t (* mv_cache)[2]= &h->mv_cache[list][ scan8[index] ];
1435
                        uint8_t (* mvd_cache)[2]= &h->mvd_cache[list][ scan8[index] ];
1436
                        pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mx, &my);
1437
                        DECODE_CABAC_MB_MVD( h, list, index)
1438
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
1439

    
1440
                        if(IS_SUB_8X8(sub_mb_type)){
1441
                            mv_cache[ 1 ][0]=
1442
                            mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;
1443
                            mv_cache[ 1 ][1]=
1444
                            mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;
1445

    
1446
                            mvd_cache[ 1 ][0]=
1447
                            mvd_cache[ 8 ][0]= mvd_cache[ 9 ][0]= mpx;
1448
                            mvd_cache[ 1 ][1]=
1449
                            mvd_cache[ 8 ][1]= mvd_cache[ 9 ][1]= mpy;
1450
                        }else if(IS_SUB_8X4(sub_mb_type)){
1451
                            mv_cache[ 1 ][0]= mx;
1452
                            mv_cache[ 1 ][1]= my;
1453

    
1454
                            mvd_cache[ 1 ][0]=  mpx;
1455
                            mvd_cache[ 1 ][1]= mpy;
1456
                        }else if(IS_SUB_4X8(sub_mb_type)){
1457
                            mv_cache[ 8 ][0]= mx;
1458
                            mv_cache[ 8 ][1]= my;
1459

    
1460
                            mvd_cache[ 8 ][0]= mpx;
1461
                            mvd_cache[ 8 ][1]= mpy;
1462
                        }
1463
                        mv_cache[ 0 ][0]= mx;
1464
                        mv_cache[ 0 ][1]= my;
1465

    
1466
                        mvd_cache[ 0 ][0]= mpx;
1467
                        mvd_cache[ 0 ][1]= mpy;
1468
                    }
1469
                }else{
1470
                    fill_rectangle(h->mv_cache [list][ scan8[4*i] ], 2, 2, 8, 0, 4);
1471
                    fill_rectangle(h->mvd_cache[list][ scan8[4*i] ], 2, 2, 8, 0, 2);
1472
                }
1473
            }
1474
        }
1475
    } else if( IS_DIRECT(mb_type) ) {
1476
        ff_h264_pred_direct_motion(h, &mb_type);
1477
        fill_rectangle(h->mvd_cache[0][scan8[0]], 4, 4, 8, 0, 2);
1478
        fill_rectangle(h->mvd_cache[1][scan8[0]], 4, 4, 8, 0, 2);
1479
        dct8x8_allowed &= h->sps.direct_8x8_inference_flag;
1480
    } else {
1481
        int list, i;
1482
        if(IS_16X16(mb_type)){
1483
            for(list=0; list<h->list_count; list++){
1484
                if(IS_DIR(mb_type, 0, list)){
1485
                    int ref;
1486
                    if(h->ref_count[list] > 1){
1487
                        ref= decode_cabac_mb_ref(h, list, 0);
1488
                        if(ref >= (unsigned)h->ref_count[list]){
1489
                            av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, h->ref_count[list]);
1490
                            return -1;
1491
                        }
1492
                    }else
1493
                        ref=0;
1494
                        fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, ref, 1);
1495
                }
1496
            }
1497
            for(list=0; list<h->list_count; list++){
1498
                if(IS_DIR(mb_type, 0, list)){
1499
                    int mx,my,mpx,mpy;
1500
                    pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mx, &my);
1501
                    DECODE_CABAC_MB_MVD( h, list, 0)
1502
                    tprintf(s->avctx, "final mv:%d %d\n", mx, my);
1503

    
1504
                    fill_rectangle(h->mvd_cache[list][ scan8[0] ], 4, 4, 8, pack8to16(mpx,mpy), 2);
1505
                    fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4);
1506
                }
1507
            }
1508
        }
1509
        else if(IS_16X8(mb_type)){
1510
            for(list=0; list<h->list_count; list++){
1511
                    for(i=0; i<2; i++){
1512
                        if(IS_DIR(mb_type, i, list)){
1513
                            int ref;
1514
                            if(h->ref_count[list] > 1){
1515
                                ref= decode_cabac_mb_ref( h, list, 8*i );
1516
                                if(ref >= (unsigned)h->ref_count[list]){
1517
                                    av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, h->ref_count[list]);
1518
                                    return -1;
1519
                                }
1520
                            }else
1521
                                ref=0;
1522
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, ref, 1);
1523
                        }else
1524
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, (LIST_NOT_USED&0xFF), 1);
1525
                    }
1526
            }
1527
            for(list=0; list<h->list_count; list++){
1528
                for(i=0; i<2; i++){
1529
                    if(IS_DIR(mb_type, i, list)){
1530
                        int mx,my,mpx,mpy;
1531
                        pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mx, &my);
1532
                        DECODE_CABAC_MB_MVD( h, list, 8*i)
1533
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
1534

    
1535
                        fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack8to16(mpx,mpy), 2);
1536
                        fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx,my), 4);
1537
                    }else{
1538
                        fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 2);
1539
                        fill_rectangle(h-> mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4);
1540
                    }
1541
                }
1542
            }
1543
        }else{
1544
            assert(IS_8X16(mb_type));
1545
            for(list=0; list<h->list_count; list++){
1546
                    for(i=0; i<2; i++){
1547
                        if(IS_DIR(mb_type, i, list)){ //FIXME optimize
1548
                            int ref;
1549
                            if(h->ref_count[list] > 1){
1550
                                ref= decode_cabac_mb_ref( h, list, 4*i );
1551
                                if(ref >= (unsigned)h->ref_count[list]){
1552
                                    av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, h->ref_count[list]);
1553
                                    return -1;
1554
                                }
1555
                            }else
1556
                                ref=0;
1557
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, ref, 1);
1558
                        }else
1559
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, (LIST_NOT_USED&0xFF), 1);
1560
                    }
1561
            }
1562
            for(list=0; list<h->list_count; list++){
1563
                for(i=0; i<2; i++){
1564
                    if(IS_DIR(mb_type, i, list)){
1565
                        int mx,my,mpx,mpy;
1566
                        pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mx, &my);
1567
                        DECODE_CABAC_MB_MVD( h, list, 4*i)
1568

    
1569
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
1570
                        fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack8to16(mpx,mpy), 2);
1571
                        fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx,my), 4);
1572
                    }else{
1573
                        fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 2);
1574
                        fill_rectangle(h-> mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4);
1575
                    }
1576
                }
1577
            }
1578
        }
1579
    }
1580

    
1581
   if( IS_INTER( mb_type ) ) {
1582
        h->chroma_pred_mode_table[mb_xy] = 0;
1583
        write_back_motion( h, mb_type );
1584
   }
1585

    
1586
    if( !IS_INTRA16x16( mb_type ) ) {
1587
        cbp  = decode_cabac_mb_cbp_luma( h );
1588
        if(CHROMA)
1589
            cbp |= decode_cabac_mb_cbp_chroma( h ) << 4;
1590
    }
1591

    
1592
    h->cbp_table[mb_xy] = h->cbp = cbp;
1593

    
1594
    if( dct8x8_allowed && (cbp&15) && !IS_INTRA( mb_type ) ) {
1595
        mb_type |= MB_TYPE_8x8DCT * get_cabac_noinline( &h->cabac, &h->cabac_state[399 + h->neighbor_transform_size] );
1596
    }
1597
    s->current_picture.mb_type[mb_xy]= mb_type;
1598

    
1599
    if( cbp || IS_INTRA16x16( mb_type ) ) {
1600
        const uint8_t *scan, *scan8x8;
1601
        const uint32_t *qmul;
1602

    
1603
        if(IS_INTERLACED(mb_type)){
1604
            scan8x8= s->qscale ? h->field_scan8x8 : h->field_scan8x8_q0;
1605
            scan= s->qscale ? h->field_scan : h->field_scan_q0;
1606
        }else{
1607
            scan8x8= s->qscale ? h->zigzag_scan8x8 : h->zigzag_scan8x8_q0;
1608
            scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
1609
        }
1610

    
1611
        // decode_cabac_mb_dqp
1612
        if(get_cabac_noinline( &h->cabac, &h->cabac_state[60 + (h->last_qscale_diff != 0)])){
1613
            int val = 1;
1614
            int ctx= 2;
1615

    
1616
            while( get_cabac_noinline( &h->cabac, &h->cabac_state[60 + ctx] ) ) {
1617
                ctx= 3;
1618
                val++;
1619
                if(val > 102){ //prevent infinite loop
1620
                    av_log(h->s.avctx, AV_LOG_ERROR, "cabac decode of qscale diff failed at %d %d\n", s->mb_x, s->mb_y);
1621
                    return -1;
1622
                }
1623
            }
1624

    
1625
            if( val&0x01 )
1626
                val=   (val + 1)>>1 ;
1627
            else
1628
                val= -((val + 1)>>1);
1629
            h->last_qscale_diff = val;
1630
            s->qscale += val;
1631
            if(((unsigned)s->qscale) > 51){
1632
                if(s->qscale<0) s->qscale+= 52;
1633
                else            s->qscale-= 52;
1634
            }
1635
            h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
1636
            h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
1637
        }else
1638
            h->last_qscale_diff=0;
1639

    
1640
        if( IS_INTRA16x16( mb_type ) ) {
1641
            int i;
1642
            //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 DC\n" );
1643
            AV_ZERO128(h->mb_luma_dc+0);
1644
            AV_ZERO128(h->mb_luma_dc+8);
1645
            decode_cabac_residual_dc( h, h->mb_luma_dc, 0, 0, scan, 16);
1646

    
1647
            if( cbp&15 ) {
1648
                qmul = h->dequant4_coeff[0][s->qscale];
1649
                for( i = 0; i < 16; i++ ) {
1650
                    //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 AC:%d\n", i );
1651
                    decode_cabac_residual_nondc(h, h->mb + 16*i, 1, i, scan + 1, qmul, 15);
1652
                }
1653
            } else {
1654
                fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1);
1655
            }
1656
        } else {
1657
            int i8x8, i4x4;
1658
            for( i8x8 = 0; i8x8 < 4; i8x8++ ) {
1659
                if( cbp & (1<<i8x8) ) {
1660
                    if( IS_8x8DCT(mb_type) ) {
1661
                        decode_cabac_residual_nondc(h, h->mb + 64*i8x8, 5, 4*i8x8,
1662
                            scan8x8, h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 64);
1663
                    } else {
1664
                        qmul = h->dequant4_coeff[IS_INTRA( mb_type ) ? 0:3][s->qscale];
1665
                        for( i4x4 = 0; i4x4 < 4; i4x4++ ) {
1666
                            const int index = 4*i8x8 + i4x4;
1667
                            //av_log( s->avctx, AV_LOG_ERROR, "Luma4x4: %d\n", index );
1668
//START_TIMER
1669
                            decode_cabac_residual_nondc(h, h->mb + 16*index, 2, index, scan, qmul, 16);
1670
//STOP_TIMER("decode_residual")
1671
                        }
1672
                    }
1673
                } else {
1674
                    uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
1675
                    nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
1676
                }
1677
            }
1678
        }
1679

    
1680
        if( cbp&0x30 ){
1681
            int c;
1682
            for( c = 0; c < 2; c++ ) {
1683
                //av_log( s->avctx, AV_LOG_ERROR, "INTRA C%d-DC\n",c );
1684
                decode_cabac_residual_dc(h, h->mb + 256 + 16*4*c, 3, c, chroma_dc_scan, 4);
1685
            }
1686
        }
1687

    
1688
        if( cbp&0x20 ) {
1689
            int c, i;
1690
            for( c = 0; c < 2; c++ ) {
1691
                qmul = h->dequant4_coeff[c+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[c]];
1692
                for( i = 0; i < 4; i++ ) {
1693
                    const int index = 16 + 4 * c + i;
1694
                    //av_log( s->avctx, AV_LOG_ERROR, "INTRA C%d-AC %d\n",c, index - 16 );
1695
                    decode_cabac_residual_nondc(h, h->mb + 16*index, 4, index, scan + 1, qmul, 15);
1696
                }
1697
            }
1698
        } else {
1699
            uint8_t * const nnz= &h->non_zero_count_cache[0];
1700
            nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
1701
            nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
1702
        }
1703
    } else {
1704
        uint8_t * const nnz= &h->non_zero_count_cache[0];
1705
        fill_rectangle(&nnz[scan8[0]], 4, 4, 8, 0, 1);
1706
        nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
1707
        nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
1708
        h->last_qscale_diff = 0;
1709
    }
1710

    
1711
    s->current_picture.qscale_table[mb_xy]= s->qscale;
1712
    write_back_non_zero_count(h);
1713

    
1714
    if(MB_MBAFF){
1715
        h->ref_count[0] >>= 1;
1716
        h->ref_count[1] >>= 1;
1717
    }
1718

    
1719
    return 0;
1720
}