1/* 2 * H.26L/H.264/AVC/JVT/14496-10/... cabac decoding 3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22/** 23 * @file 24 * H.264 / AVC / MPEG4 part10 cabac decoding. 25 * @author Michael Niedermayer <michaelni@gmx.at> 26 */ 27 28#define CABAC 1 29 30#include "internal.h" 31#include "dsputil.h" 32#include "avcodec.h" 33#include "h264.h" 34#include "h264data.h" 35#include "h264_mvpred.h" 36#include "golomb.h" 37 38#include "cabac.h" 39#if ARCH_X86 40#include "x86/h264_i386.h" 41#endif 42 43//#undef NDEBUG 44#include <assert.h> 45 46/* Cabac pre state table */ 47 48static 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 217static 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 688void 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 708static 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 720static 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 750static 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 786static 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 799static 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 823static 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} 839static 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 858static 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} 867static 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 884static 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 912static 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 959static 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 986DECLARE_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 993static 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 1174static 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 1178static 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 */ 1186int 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); 1287decode_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, *dc_scan; 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 dc_scan= luma_dc_field_scan; 1607 }else{ 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; 1611 } 1612 1613 // decode_cabac_mb_dqp 1614 if(get_cabac_noinline( &h->cabac, &h->cabac_state[60 + (h->last_qscale_diff != 0)])){ 1615 int val = 1; 1616 int ctx= 2; 1617 1618 while( get_cabac_noinline( &h->cabac, &h->cabac_state[60 + ctx] ) ) { 1619 ctx= 3; 1620 val++; 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); 1623 return -1; 1624 } 1625 } 1626 1627 if( val&0x01 ) 1628 val= (val + 1)>>1 ; 1629 else 1630 val= -((val + 1)>>1); 1631 h->last_qscale_diff = val; 1632 s->qscale += val; 1633 if(((unsigned)s->qscale) > 51){ 1634 if(s->qscale<0) s->qscale+= 52; 1635 else s->qscale-= 52; 1636 } 1637 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale); 1638 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale); 1639 }else 1640 h->last_qscale_diff=0; 1641 1642 if( IS_INTRA16x16( mb_type ) ) { 1643 int i; 1644 //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 DC\n" ); 1645 decode_cabac_residual_dc( h, h->mb, 0, 0, dc_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} 1721