2 * H.26L/H.264/AVC/JVT/14496-10/... cabac decoding
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
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.
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.
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
24 * H.264 / AVC / MPEG4 part10 cabac decoding.
25 * @author Michael Niedermayer <michaelni@gmx.at>
35 #include "h264_mvpred.h"
40 #include "x86/h264_i386.h"
46 /* Cabac pre state table */
48 static const int8_t cabac_context_init_I[460][2] =
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 },
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 },
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 },
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 },
74 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
78 { 0, 41 }, { 0, 63 }, { 0, 63 }, { 0, 63 },
79 { -9, 83 }, { 4, 86 }, { 0, 97 }, { -7, 72 },
80 { 13, 41 }, { 3, 62 },
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 },
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 },
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 },
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 },
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 },
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 },
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 },
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 },
153 /* 276 a bit special (not used, bypass is used instead) */
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 },
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 },
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 },
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 },
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 },
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 }
217 static const int8_t cabac_context_init_PB[3][460][2] =
219 /* i_cabac_init_idc == 0 */
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 },
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 },
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 },
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 },
245 { -7, 67 }, { -5, 74 }, { -4, 74 }, { -5, 80 },
246 { -7, 72 }, { 1, 58 },
249 { 0, 41 }, { 0, 63 }, { 0, 63 }, { 0, 63 },
250 { -9, 83 }, { 4, 86 }, { 0, 97 }, { -7, 72 },
251 { 13, 41 }, { 3, 62 },
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 },
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 },
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 },
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 },
315 /* 276 a bit special (not used, bypass is used instead) */
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 },
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 },
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 },
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 },
375 /* i_cabac_init_idc == 1 */
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 },
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 },
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 },
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 },
401 { -1, 66 },{ -1, 77 },{ 1, 70 },{ -2, 86 },
402 { -5, 72 },{ 0, 61 },
405 { 0, 41 }, { 0, 63 }, { 0, 63 }, { 0, 63 },
406 { -9, 83 }, { 4, 86 }, { 0, 97 }, { -7, 72 },
407 { 13, 41 }, { 3, 62 },
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 },
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 },
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 },
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 },
471 /* 276 a bit special (not used, bypass is used instead) */
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 },
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 },
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 },
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 },
531 /* i_cabac_init_idc == 2 */
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 },
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 },
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 },
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 },
557 { 3, 55 },{ -4, 79 },{ -2, 75 },{ -12, 97 },
558 { -7, 50 },{ 1, 60 },
561 { 0, 41 }, { 0, 63 }, { 0, 63 }, { 0, 63 },
562 { -9, 83 }, { 4, 86 }, { 0, 97 }, { -7, 72 },
563 { 13, 41 }, { 3, 62 },
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 },
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 },
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 },
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 },
627 /* 276 a bit special (not used, bypass is used instead) */
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 },
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 },
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 },
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 },
688 void ff_h264_init_cabac_states(H264Context *h) {
689 MpegEncContext * const s = &h->s;
691 const int8_t (*tab)[2];
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];
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;
704 h->cabac_state[i] = pre;
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;
712 unsigned long ctx = 0;
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);
717 return get_cabac_noinline( &h->cabac, &(h->cabac_state+70)[ctx] );
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];
726 if( h->left_type[0] & (MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM))
728 if( h->top_type & (MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM))
730 if( get_cabac_noinline( &h->cabac, &state[ctx] ) == 0 )
734 if( get_cabac_noinline( &h->cabac, state ) == 0 )
738 if( get_cabac_terminate( &h->cabac ) )
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] );
750 static int decode_cabac_mb_skip( H264Context *h, int mb_x, int mb_y ) {
751 MpegEncContext * const s = &h->s;
755 if(FRAME_MBAFF){ //FIXME merge with the stuff in fill_caches?
756 int mb_xy = mb_x + (mb_y&~1)*s->mb_stride;
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;
763 mbb_xy = mb_xy - s->mb_stride;
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;
769 mbb_xy = mb_x + (mb_y-1)*s->mb_stride;
771 int mb_xy = h->mb_xy;
773 mbb_xy = mb_xy - (s->mb_stride << FIELD_PICTURE);
776 if( h->slice_table[mba_xy] == h->slice_num && !IS_SKIP( s->current_picture.mb_type[mba_xy] ))
778 if( h->slice_table[mbb_xy] == h->slice_num && !IS_SKIP( s->current_picture.mb_type[mbb_xy] ))
781 if( h->slice_type_nos == FF_B_TYPE )
783 return get_cabac_noinline( &h->cabac, &h->cabac_state[11+ctx] );
786 static int decode_cabac_mb_intra4x4_pred_mode( H264Context *h, int pred_mode ) {
789 if( get_cabac( &h->cabac, &h->cabac_state[68] ) )
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] );
796 return mode + ( mode >= pred_mode );
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;
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 )
809 if( h->top_type && h->chroma_pred_mode_table[mbb_xy] != 0 )
812 if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+ctx] ) == 0 )
815 if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+3] ) == 0 )
817 if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+3] ) == 0 )
823 static int decode_cabac_mb_cbp_luma( H264Context *h) {
824 int cbp_b, cbp_a, ctx, cbp = 0;
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;
839 static int decode_cabac_mb_cbp_chroma( H264Context *h) {
843 cbp_a = (h->left_cbp>>4)&0x03;
844 cbp_b = (h-> top_cbp>>4)&0x03;
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 )
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] );
858 static int decode_cabac_p_mb_sub_type( H264Context *h ) {
859 if( get_cabac( &h->cabac, &h->cabac_state[21] ) )
861 if( !get_cabac( &h->cabac, &h->cabac_state[22] ) )
863 if( get_cabac( &h->cabac, &h->cabac_state[23] ) )
867 static int decode_cabac_b_mb_sub_type( H264Context *h ) {
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 */
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 */
879 type += 2*get_cabac( &h->cabac, &h->cabac_state[39] );
880 type += get_cabac( &h->cabac, &h->cabac_state[39] );
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];
890 if( h->slice_type_nos == FF_B_TYPE) {
891 if( refa > 0 && !(h->direct_cache[scan8[n] - 1]&(MB_TYPE_DIRECT2>>1)) )
893 if( refb > 0 && !(h->direct_cache[scan8[n] - 8]&(MB_TYPE_DIRECT2>>1)) )
902 while( get_cabac( &h->cabac, &h->cabac_state[54+ctx] ) ) {
905 if(ref >= 32 /*h->ref_list[list]*/){
912 static int decode_cabac_mb_mvd( H264Context *h, int ctxbase, int amvd, int *mvda) {
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)])){
923 while( mvd < 9 && get_cabac( &h->cabac, &h->cabac_state[ctxbase] ) ) {
931 while( get_cabac_bypass( &h->cabac ) ) {
935 av_log(h->s.avctx, AV_LOG_ERROR, "overflow in decode_cabac_mb_mvd\n");
940 mvd += get_cabac_bypass( &h->cabac )<<k;
942 *mvda=mvd < 70 ? mvd : 70;
945 return get_cabac_bypass_sign( &h->cabac, -mvd );
948 #define DECODE_CABAC_MB_MVD( h, list, n )\
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];\
955 mx += decode_cabac_mb_mvd( h, 40, amvd0, &mpx );\
956 my += decode_cabac_mb_mvd( h, 47, amvd1, &mpy );\
959 static av_always_inline int get_cabac_cbf_ctx( H264Context *h, int cat, int idx, int is_dc ) {
965 nza = h->left_cbp&0x100;
966 nzb = h-> top_cbp&0x100;
968 nza = (h->left_cbp>>(6+idx))&0x01;
969 nzb = (h-> top_cbp>>(6+idx))&0x01;
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];
983 return ctx + 4 * cat;
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
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 }
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 }
1002 static const int coeff_abs_level_m1_offset[6] = {
1003 227+0, 227+10, 227+20, 227+30, 227+39, 426
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 }
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 }
1031 int coeff_count = 0;
1034 uint8_t *significant_coeff_ctx_base;
1035 uint8_t *last_coeff_ctx_base;
1036 uint8_t *abs_level_m1_ctx_base;
1039 #define CABAC_ON_STACK
1041 #ifdef CABAC_ON_STACK
1044 cc.range = h->cabac.range;
1045 cc.low = h->cabac.low;
1046 cc.bytestream= h->cabac.bytestream;
1048 #define CC &h->cabac
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
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 ) {
1064 h->non_zero_count_cache[scan8[n]] = 0;
1066 #ifdef CABAC_ON_STACK
1067 h->cabac.range = cc.range ;
1068 h->cabac.low = cc.low ;
1069 h->cabac.bytestream= cc.bytestream;
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];
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 ) ) { \
1095 if( last == max_coeff -1 ) {\
1096 index[coeff_count++] = last;\
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);
1102 coeff_count= decode_significance_x86(CC, max_coeff, significant_coeff_ctx_base, index);
1104 DECODE_SIGNIFICANCE( 63, sig_off[last], last_coeff_flag_offset_8x8[last] );
1106 DECODE_SIGNIFICANCE( max_coeff - 1, last, last );
1109 assert(coeff_count > 0);
1113 h->cbp_table[h->mb_xy] |= 0x100;
1115 h->cbp_table[h->mb_xy] |= 0x40 << n;
1118 fill_rectangle(&h->non_zero_count_cache[scan8[n]], 2, 2, 8, coeff_count, 1);
1120 assert( cat == 1 || cat == 2 || cat == 4 );
1121 h->non_zero_count_cache[scan8[n]] = coeff_count;
1126 uint8_t *ctx = coeff_abs_level1_ctx[node_ctx] + abs_level_m1_ctx_base;
1128 int j= scantable[index[--coeff_count]];
1130 if( get_cabac( CC, ctx ) == 0 ) {
1131 node_ctx = coeff_abs_level_transition[0][node_ctx];
1133 block[j] = get_cabac_bypass_sign( CC, -1);
1135 block[j] = (get_cabac_bypass_sign( CC, -qmul[j]) + 32) >> 6;
1139 ctx = coeff_abs_levelgt1_ctx[node_ctx] + abs_level_m1_ctx_base;
1140 node_ctx = coeff_abs_level_transition[1][node_ctx];
1142 while( coeff_abs < 15 && get_cabac( CC, ctx ) ) {
1146 if( coeff_abs >= 15 ) {
1148 while( get_cabac_bypass( CC ) ) {
1154 coeff_abs += coeff_abs + get_cabac_bypass( CC );
1160 block[j] = get_cabac_bypass_sign( CC, -coeff_abs );
1162 block[j] = (get_cabac_bypass_sign( CC, -coeff_abs ) * qmul[j] + 32) >> 6;
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;
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);
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);
1183 * decodes a macroblock
1184 * @return 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
1186 int ff_h264_decode_mb_cabac(H264Context *h) {
1187 MpegEncContext * const s = &h->s;
1189 int mb_type, partition_count, cbp = 0;
1190 int dct8x8_allowed= h->pps.transform_8x8_mode;
1192 mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;
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 ) {
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;
1201 skip = decode_cabac_mb_skip( h, s->mb_x, s->mb_y );
1202 /* read skip flags */
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);
1213 h->cbp_table[mb_xy] = 0;
1214 h->chroma_pred_mode_table[mb_xy] = 0;
1215 h->last_qscale_diff = 0;
1222 if( (s->mb_y&1) == 0 )
1224 h->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h);
1227 h->prev_mb_skipped = 0;
1229 fill_decode_neighbors(h, -(MB_FIELD));
1231 if( h->slice_type_nos == FF_B_TYPE ) {
1233 assert(h->slice_type_nos == FF_B_TYPE);
1235 if( !IS_DIRECT( h->left_type[0]-1 ) )
1237 if( !IS_DIRECT( h->top_type-1 ) )
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 */
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] );
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 */
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_* */
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 ) {
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] );
1273 /* P_L0_D8x16, P_L0_D16x8 */
1274 mb_type= 2 - get_cabac_noinline( &h->cabac, &h->cabac_state[17] );
1276 partition_count= p_mb_type_info[mb_type].partition_count;
1277 mb_type= p_mb_type_info[mb_type].type;
1279 mb_type= decode_cabac_intra_mb_type(h, 17, 0);
1280 goto decode_intra_mb;
1283 mb_type= decode_cabac_intra_mb_type(h, 3, 1);
1284 if(h->slice_type == FF_SI_TYPE && mb_type)
1286 assert(h->slice_type_nos == FF_I_TYPE);
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;
1294 mb_type |= MB_TYPE_INTERLACED;
1296 h->slice_table[ mb_xy ]= h->slice_num;
1298 if(IS_INTRA_PCM(mb_type)) {
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--;
1307 if(h->cabac.low&0x1FF) ptr--;
1310 // The pixels are stored in the same order as levels in h->mb array.
1311 memcpy(h->mb, ptr, 256); ptr+=256;
1313 memcpy(h->mb+128, ptr, 128); ptr+=128;
1316 ff_init_cabac_decoder(&h->cabac, ptr, h->cabac.bytestream_end - ptr);
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;
1331 h->ref_count[0] <<= 1;
1332 h->ref_count[1] <<= 1;
1335 fill_decode_caches(h, mb_type);
1337 if( IS_INTRA( mb_type ) ) {
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 );
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 );
1352 //av_log( s->avctx, AV_LOG_ERROR, "i4x4 pred=%d mode=%d\n", pred, h->intra4x4_pred_mode_cache[ scan8[i] ] );
1355 ff_h264_write_back_intra_pred_mode(h);
1356 if( ff_h264_check_intra4x4_pred_mode(h) < 0 ) return -1;
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;
1362 h->chroma_pred_mode_table[mb_xy] =
1363 pred_mode = decode_cabac_mb_chroma_pre_mode( h );
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;
1369 } else if( partition_count == 4 ) {
1370 int i, j, sub_partition_count[4], list, ref[2][4];
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;
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 );
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;
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]);
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];
1417 dct8x8_allowed = get_dct8x8_allowed(h);
1419 for(list=0; list<h->list_count; list++){
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);
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++){
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);
1440 if(IS_SUB_8X8(sub_mb_type)){
1442 mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;
1444 mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;
1447 mvd_cache[ 8 ][0]= mvd_cache[ 9 ][0]= mpx;
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;
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;
1460 mvd_cache[ 8 ][0]= mpx;
1461 mvd_cache[ 8 ][1]= mpy;
1463 mv_cache[ 0 ][0]= mx;
1464 mv_cache[ 0 ][1]= my;
1466 mvd_cache[ 0 ][0]= mpx;
1467 mvd_cache[ 0 ][1]= mpy;
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);
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;
1482 if(IS_16X16(mb_type)){
1483 for(list=0; list<h->list_count; list++){
1484 if(IS_DIR(mb_type, 0, list)){
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]);
1494 fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, ref, 1);
1497 for(list=0; list<h->list_count; list++){
1498 if(IS_DIR(mb_type, 0, list)){
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);
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);
1509 else if(IS_16X8(mb_type)){
1510 for(list=0; list<h->list_count; list++){
1512 if(IS_DIR(mb_type, i, list)){
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]);
1522 fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, ref, 1);
1524 fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, (LIST_NOT_USED&0xFF), 1);
1527 for(list=0; list<h->list_count; list++){
1529 if(IS_DIR(mb_type, i, list)){
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);
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);
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);
1544 assert(IS_8X16(mb_type));
1545 for(list=0; list<h->list_count; list++){
1547 if(IS_DIR(mb_type, i, list)){ //FIXME optimize
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]);
1557 fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, ref, 1);
1559 fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, (LIST_NOT_USED&0xFF), 1);
1562 for(list=0; list<h->list_count; list++){
1564 if(IS_DIR(mb_type, i, list)){
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)
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);
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);
1581 if( IS_INTER( mb_type ) ) {
1582 h->chroma_pred_mode_table[mb_xy] = 0;
1583 write_back_motion( h, mb_type );
1586 if( !IS_INTRA16x16( mb_type ) ) {
1587 cbp = decode_cabac_mb_cbp_luma( h );
1589 cbp |= decode_cabac_mb_cbp_chroma( h ) << 4;
1592 h->cbp_table[mb_xy] = h->cbp = cbp;
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] );
1597 s->current_picture.mb_type[mb_xy]= mb_type;
1599 if( cbp || IS_INTRA16x16( mb_type ) ) {
1600 const uint8_t *scan, *scan8x8, *dc_scan;
1601 const uint32_t *qmul;
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 dc_scan= luma_dc_field_scan;
1608 scan8x8= s->qscale ? h->zigzag_scan8x8 : h->zigzag_scan8x8_q0;
1609 scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
1610 dc_scan= luma_dc_zigzag_scan;
1613 // decode_cabac_mb_dqp
1614 if(get_cabac_noinline( &h->cabac, &h->cabac_state[60 + (h->last_qscale_diff != 0)])){
1618 while( get_cabac_noinline( &h->cabac, &h->cabac_state[60 + ctx] ) ) {
1621 if(val > 102){ //prevent infinite loop
1622 av_log(h->s.avctx, AV_LOG_ERROR, "cabac decode of qscale diff failed at %d %d\n", s->mb_x, s->mb_y);
1630 val= -((val + 1)>>1);
1631 h->last_qscale_diff = val;
1633 if(((unsigned)s->qscale) > 51){
1634 if(s->qscale<0) s->qscale+= 52;
1635 else s->qscale-= 52;
1637 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
1638 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
1640 h->last_qscale_diff=0;
1642 if( IS_INTRA16x16( mb_type ) ) {
1644 //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 DC\n" );
1645 decode_cabac_residual_dc( h, h->mb, 0, 0, dc_scan, 16);
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);
1654 fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1);
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);
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 );
1669 decode_cabac_residual_nondc(h, h->mb + 16*index, 2, index, scan, qmul, 16);
1670 //STOP_TIMER("decode_residual")
1674 uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
1675 nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
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);
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);
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;
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;
1711 s->current_picture.qscale_table[mb_xy]= s->qscale;
1712 write_back_non_zero_count(h);
1715 h->ref_count[0] >>= 1;
1716 h->ref_count[1] >>= 1;