| 1 | /* |
| 2 | * VC-1 and WMV3 decoder |
| 3 | * Copyright (c) 2011 Mashiat Sarker Shakkhar |
| 4 | * Copyright (c) 2006-2007 Konstantin Shishkov |
| 5 | * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer |
| 6 | * |
| 7 | * This file is part of FFmpeg. |
| 8 | * |
| 9 | * FFmpeg is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU Lesser General Public |
| 11 | * License as published by the Free Software Foundation; either |
| 12 | * version 2.1 of the License, or (at your option) any later version. |
| 13 | * |
| 14 | * FFmpeg is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * Lesser General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU Lesser General Public |
| 20 | * License along with FFmpeg; if not, write to the Free Software |
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 22 | */ |
| 23 | |
| 24 | /** |
| 25 | * @file |
| 26 | * VC-1 and WMV3 block decoding routines |
| 27 | */ |
| 28 | |
| 29 | #include "avcodec.h" |
| 30 | #include "mpegutils.h" |
| 31 | #include "mpegvideo.h" |
| 32 | #include "msmpeg4data.h" |
| 33 | #include "unary.h" |
| 34 | #include "vc1.h" |
| 35 | #include "vc1_pred.h" |
| 36 | #include "vc1acdata.h" |
| 37 | #include "vc1data.h" |
| 38 | |
| 39 | #define MB_INTRA_VLC_BITS 9 |
| 40 | #define DC_VLC_BITS 9 |
| 41 | |
| 42 | // offset tables for interlaced picture MVDATA decoding |
| 43 | static const int offset_table1[9] = { 0, 1, 2, 4, 8, 16, 32, 64, 128 }; |
| 44 | static const int offset_table2[9] = { 0, 1, 3, 7, 15, 31, 63, 127, 255 }; |
| 45 | |
| 46 | /***********************************************************************/ |
| 47 | /** |
| 48 | * @name VC-1 Bitplane decoding |
| 49 | * @see 8.7, p56 |
| 50 | * @{ |
| 51 | */ |
| 52 | |
| 53 | |
| 54 | static void init_block_index(VC1Context *v) |
| 55 | { |
| 56 | MpegEncContext *s = &v->s; |
| 57 | ff_init_block_index(s); |
| 58 | if (v->field_mode && !(v->second_field ^ v->tff)) { |
| 59 | s->dest[0] += s->current_picture_ptr->f->linesize[0]; |
| 60 | s->dest[1] += s->current_picture_ptr->f->linesize[1]; |
| 61 | s->dest[2] += s->current_picture_ptr->f->linesize[2]; |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | /** @} */ //Bitplane group |
| 66 | |
| 67 | static void vc1_put_signed_blocks_clamped(VC1Context *v) |
| 68 | { |
| 69 | MpegEncContext *s = &v->s; |
| 70 | int topleft_mb_pos, top_mb_pos; |
| 71 | int stride_y, fieldtx = 0; |
| 72 | int v_dist; |
| 73 | |
| 74 | /* The put pixels loop is always one MB row behind the decoding loop, |
| 75 | * because we can only put pixels when overlap filtering is done, and |
| 76 | * for filtering of the bottom edge of a MB, we need the next MB row |
| 77 | * present as well. |
| 78 | * Within the row, the put pixels loop is also one MB col behind the |
| 79 | * decoding loop. The reason for this is again, because for filtering |
| 80 | * of the right MB edge, we need the next MB present. */ |
| 81 | if (!s->first_slice_line) { |
| 82 | if (s->mb_x) { |
| 83 | topleft_mb_pos = (s->mb_y - 1) * s->mb_stride + s->mb_x - 1; |
| 84 | if (v->fcm == ILACE_FRAME) |
| 85 | fieldtx = v->fieldtx_plane[topleft_mb_pos]; |
| 86 | stride_y = s->linesize << fieldtx; |
| 87 | v_dist = (16 - fieldtx) >> (fieldtx == 0); |
| 88 | s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][0], |
| 89 | s->dest[0] - 16 * s->linesize - 16, |
| 90 | stride_y); |
| 91 | s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][1], |
| 92 | s->dest[0] - 16 * s->linesize - 8, |
| 93 | stride_y); |
| 94 | s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][2], |
| 95 | s->dest[0] - v_dist * s->linesize - 16, |
| 96 | stride_y); |
| 97 | s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][3], |
| 98 | s->dest[0] - v_dist * s->linesize - 8, |
| 99 | stride_y); |
| 100 | s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][4], |
| 101 | s->dest[1] - 8 * s->uvlinesize - 8, |
| 102 | s->uvlinesize); |
| 103 | s->idsp.put_signed_pixels_clamped(v->block[v->topleft_blk_idx][5], |
| 104 | s->dest[2] - 8 * s->uvlinesize - 8, |
| 105 | s->uvlinesize); |
| 106 | } |
| 107 | if (s->mb_x == s->mb_width - 1) { |
| 108 | top_mb_pos = (s->mb_y - 1) * s->mb_stride + s->mb_x; |
| 109 | if (v->fcm == ILACE_FRAME) |
| 110 | fieldtx = v->fieldtx_plane[top_mb_pos]; |
| 111 | stride_y = s->linesize << fieldtx; |
| 112 | v_dist = fieldtx ? 15 : 8; |
| 113 | s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][0], |
| 114 | s->dest[0] - 16 * s->linesize, |
| 115 | stride_y); |
| 116 | s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][1], |
| 117 | s->dest[0] - 16 * s->linesize + 8, |
| 118 | stride_y); |
| 119 | s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][2], |
| 120 | s->dest[0] - v_dist * s->linesize, |
| 121 | stride_y); |
| 122 | s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][3], |
| 123 | s->dest[0] - v_dist * s->linesize + 8, |
| 124 | stride_y); |
| 125 | s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][4], |
| 126 | s->dest[1] - 8 * s->uvlinesize, |
| 127 | s->uvlinesize); |
| 128 | s->idsp.put_signed_pixels_clamped(v->block[v->top_blk_idx][5], |
| 129 | s->dest[2] - 8 * s->uvlinesize, |
| 130 | s->uvlinesize); |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | #define inc_blk_idx(idx) do { \ |
| 135 | idx++; \ |
| 136 | if (idx >= v->n_allocated_blks) \ |
| 137 | idx = 0; \ |
| 138 | } while (0) |
| 139 | |
| 140 | inc_blk_idx(v->topleft_blk_idx); |
| 141 | inc_blk_idx(v->top_blk_idx); |
| 142 | inc_blk_idx(v->left_blk_idx); |
| 143 | inc_blk_idx(v->cur_blk_idx); |
| 144 | } |
| 145 | |
| 146 | /***********************************************************************/ |
| 147 | /** |
| 148 | * @name VC-1 Block-level functions |
| 149 | * @see 7.1.4, p91 and 8.1.1.7, p(1)04 |
| 150 | * @{ |
| 151 | */ |
| 152 | |
| 153 | /** |
| 154 | * @def GET_MQUANT |
| 155 | * @brief Get macroblock-level quantizer scale |
| 156 | */ |
| 157 | #define GET_MQUANT() \ |
| 158 | if (v->dquantfrm) { \ |
| 159 | int edges = 0; \ |
| 160 | if (v->dqprofile == DQPROFILE_ALL_MBS) { \ |
| 161 | if (v->dqbilevel) { \ |
| 162 | mquant = (get_bits1(gb)) ? v->altpq : v->pq; \ |
| 163 | } else { \ |
| 164 | mqdiff = get_bits(gb, 3); \ |
| 165 | if (mqdiff != 7) \ |
| 166 | mquant = v->pq + mqdiff; \ |
| 167 | else \ |
| 168 | mquant = get_bits(gb, 5); \ |
| 169 | } \ |
| 170 | } \ |
| 171 | if (v->dqprofile == DQPROFILE_SINGLE_EDGE) \ |
| 172 | edges = 1 << v->dqsbedge; \ |
| 173 | else if (v->dqprofile == DQPROFILE_DOUBLE_EDGES) \ |
| 174 | edges = (3 << v->dqsbedge) % 15; \ |
| 175 | else if (v->dqprofile == DQPROFILE_FOUR_EDGES) \ |
| 176 | edges = 15; \ |
| 177 | if ((edges&1) && !s->mb_x) \ |
| 178 | mquant = v->altpq; \ |
| 179 | if ((edges&2) && s->first_slice_line) \ |
| 180 | mquant = v->altpq; \ |
| 181 | if ((edges&4) && s->mb_x == (s->mb_width - 1)) \ |
| 182 | mquant = v->altpq; \ |
| 183 | if ((edges&8) && s->mb_y == (s->mb_height - 1)) \ |
| 184 | mquant = v->altpq; \ |
| 185 | if (!mquant || mquant > 31) { \ |
| 186 | av_log(v->s.avctx, AV_LOG_ERROR, \ |
| 187 | "Overriding invalid mquant %d\n", mquant); \ |
| 188 | mquant = 1; \ |
| 189 | } \ |
| 190 | } |
| 191 | |
| 192 | /** |
| 193 | * @def GET_MVDATA(_dmv_x, _dmv_y) |
| 194 | * @brief Get MV differentials |
| 195 | * @see MVDATA decoding from 8.3.5.2, p(1)20 |
| 196 | * @param _dmv_x Horizontal differential for decoded MV |
| 197 | * @param _dmv_y Vertical differential for decoded MV |
| 198 | */ |
| 199 | #define GET_MVDATA(_dmv_x, _dmv_y) \ |
| 200 | index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table, \ |
| 201 | VC1_MV_DIFF_VLC_BITS, 2); \ |
| 202 | if (index > 36) { \ |
| 203 | mb_has_coeffs = 1; \ |
| 204 | index -= 37; \ |
| 205 | } else \ |
| 206 | mb_has_coeffs = 0; \ |
| 207 | s->mb_intra = 0; \ |
| 208 | if (!index) { \ |
| 209 | _dmv_x = _dmv_y = 0; \ |
| 210 | } else if (index == 35) { \ |
| 211 | _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \ |
| 212 | _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \ |
| 213 | } else if (index == 36) { \ |
| 214 | _dmv_x = 0; \ |
| 215 | _dmv_y = 0; \ |
| 216 | s->mb_intra = 1; \ |
| 217 | } else { \ |
| 218 | index1 = index % 6; \ |
| 219 | if (!s->quarter_sample && index1 == 5) val = 1; \ |
| 220 | else val = 0; \ |
| 221 | if (size_table[index1] - val > 0) \ |
| 222 | val = get_bits(gb, size_table[index1] - val); \ |
| 223 | else val = 0; \ |
| 224 | sign = 0 - (val&1); \ |
| 225 | _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \ |
| 226 | \ |
| 227 | index1 = index / 6; \ |
| 228 | if (!s->quarter_sample && index1 == 5) val = 1; \ |
| 229 | else val = 0; \ |
| 230 | if (size_table[index1] - val > 0) \ |
| 231 | val = get_bits(gb, size_table[index1] - val); \ |
| 232 | else val = 0; \ |
| 233 | sign = 0 - (val & 1); \ |
| 234 | _dmv_y = (sign ^ ((val >> 1) + offset_table[index1])) - sign; \ |
| 235 | } |
| 236 | |
| 237 | static av_always_inline void get_mvdata_interlaced(VC1Context *v, int *dmv_x, |
| 238 | int *dmv_y, int *pred_flag) |
| 239 | { |
| 240 | int index, index1; |
| 241 | int extend_x = 0, extend_y = 0; |
| 242 | GetBitContext *gb = &v->s.gb; |
| 243 | int bits, esc; |
| 244 | int val, sign; |
| 245 | const int* offs_tab; |
| 246 | |
| 247 | if (v->numref) { |
| 248 | bits = VC1_2REF_MVDATA_VLC_BITS; |
| 249 | esc = 125; |
| 250 | } else { |
| 251 | bits = VC1_1REF_MVDATA_VLC_BITS; |
| 252 | esc = 71; |
| 253 | } |
| 254 | switch (v->dmvrange) { |
| 255 | case 1: |
| 256 | extend_x = 1; |
| 257 | break; |
| 258 | case 2: |
| 259 | extend_y = 1; |
| 260 | break; |
| 261 | case 3: |
| 262 | extend_x = extend_y = 1; |
| 263 | break; |
| 264 | } |
| 265 | index = get_vlc2(gb, v->imv_vlc->table, bits, 3); |
| 266 | if (index == esc) { |
| 267 | *dmv_x = get_bits(gb, v->k_x); |
| 268 | *dmv_y = get_bits(gb, v->k_y); |
| 269 | if (v->numref) { |
| 270 | if (pred_flag) { |
| 271 | *pred_flag = *dmv_y & 1; |
| 272 | *dmv_y = (*dmv_y + *pred_flag) >> 1; |
| 273 | } else { |
| 274 | *dmv_y = (*dmv_y + (*dmv_y & 1)) >> 1; |
| 275 | } |
| 276 | } |
| 277 | } |
| 278 | else { |
| 279 | av_assert0(index < esc); |
| 280 | if (extend_x) |
| 281 | offs_tab = offset_table2; |
| 282 | else |
| 283 | offs_tab = offset_table1; |
| 284 | index1 = (index + 1) % 9; |
| 285 | if (index1 != 0) { |
| 286 | val = get_bits(gb, index1 + extend_x); |
| 287 | sign = 0 -(val & 1); |
| 288 | *dmv_x = (sign ^ ((val >> 1) + offs_tab[index1])) - sign; |
| 289 | } else |
| 290 | *dmv_x = 0; |
| 291 | if (extend_y) |
| 292 | offs_tab = offset_table2; |
| 293 | else |
| 294 | offs_tab = offset_table1; |
| 295 | index1 = (index + 1) / 9; |
| 296 | if (index1 > v->numref) { |
| 297 | val = get_bits(gb, (index1 + (extend_y << v->numref)) >> v->numref); |
| 298 | sign = 0 - (val & 1); |
| 299 | *dmv_y = (sign ^ ((val >> 1) + offs_tab[index1 >> v->numref])) - sign; |
| 300 | } else |
| 301 | *dmv_y = 0; |
| 302 | if (v->numref && pred_flag) |
| 303 | *pred_flag = index1 & 1; |
| 304 | } |
| 305 | } |
| 306 | |
| 307 | /** Reconstruct motion vector for B-frame and do motion compensation |
| 308 | */ |
| 309 | static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], |
| 310 | int direct, int mode) |
| 311 | { |
| 312 | if (direct) { |
| 313 | ff_vc1_mc_1mv(v, 0); |
| 314 | ff_vc1_interp_mc(v); |
| 315 | return; |
| 316 | } |
| 317 | if (mode == BMV_TYPE_INTERPOLATED) { |
| 318 | ff_vc1_mc_1mv(v, 0); |
| 319 | ff_vc1_interp_mc(v); |
| 320 | return; |
| 321 | } |
| 322 | |
| 323 | ff_vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD)); |
| 324 | } |
| 325 | |
| 326 | /** Get predicted DC value for I-frames only |
| 327 | * prediction dir: left=0, top=1 |
| 328 | * @param s MpegEncContext |
| 329 | * @param overlap flag indicating that overlap filtering is used |
| 330 | * @param pq integer part of picture quantizer |
| 331 | * @param[in] n block index in the current MB |
| 332 | * @param dc_val_ptr Pointer to DC predictor |
| 333 | * @param dir_ptr Prediction direction for use in AC prediction |
| 334 | */ |
| 335 | static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n, |
| 336 | int16_t **dc_val_ptr, int *dir_ptr) |
| 337 | { |
| 338 | int a, b, c, wrap, pred, scale; |
| 339 | int16_t *dc_val; |
| 340 | static const uint16_t dcpred[32] = { |
| 341 | -1, 1024, 512, 341, 256, 205, 171, 146, 128, |
| 342 | 114, 102, 93, 85, 79, 73, 68, 64, |
| 343 | 60, 57, 54, 51, 49, 47, 45, 43, |
| 344 | 41, 39, 38, 37, 35, 34, 33 |
| 345 | }; |
| 346 | |
| 347 | /* find prediction - wmv3_dc_scale always used here in fact */ |
| 348 | if (n < 4) scale = s->y_dc_scale; |
| 349 | else scale = s->c_dc_scale; |
| 350 | |
| 351 | wrap = s->block_wrap[n]; |
| 352 | dc_val = s->dc_val[0] + s->block_index[n]; |
| 353 | |
| 354 | /* B A |
| 355 | * C X |
| 356 | */ |
| 357 | c = dc_val[ - 1]; |
| 358 | b = dc_val[ - 1 - wrap]; |
| 359 | a = dc_val[ - wrap]; |
| 360 | |
| 361 | if (pq < 9 || !overlap) { |
| 362 | /* Set outer values */ |
| 363 | if (s->first_slice_line && (n != 2 && n != 3)) |
| 364 | b = a = dcpred[scale]; |
| 365 | if (s->mb_x == 0 && (n != 1 && n != 3)) |
| 366 | b = c = dcpred[scale]; |
| 367 | } else { |
| 368 | /* Set outer values */ |
| 369 | if (s->first_slice_line && (n != 2 && n != 3)) |
| 370 | b = a = 0; |
| 371 | if (s->mb_x == 0 && (n != 1 && n != 3)) |
| 372 | b = c = 0; |
| 373 | } |
| 374 | |
| 375 | if (abs(a - b) <= abs(b - c)) { |
| 376 | pred = c; |
| 377 | *dir_ptr = 1; // left |
| 378 | } else { |
| 379 | pred = a; |
| 380 | *dir_ptr = 0; // top |
| 381 | } |
| 382 | |
| 383 | /* update predictor */ |
| 384 | *dc_val_ptr = &dc_val[0]; |
| 385 | return pred; |
| 386 | } |
| 387 | |
| 388 | |
| 389 | /** Get predicted DC value |
| 390 | * prediction dir: left=0, top=1 |
| 391 | * @param s MpegEncContext |
| 392 | * @param overlap flag indicating that overlap filtering is used |
| 393 | * @param pq integer part of picture quantizer |
| 394 | * @param[in] n block index in the current MB |
| 395 | * @param a_avail flag indicating top block availability |
| 396 | * @param c_avail flag indicating left block availability |
| 397 | * @param dc_val_ptr Pointer to DC predictor |
| 398 | * @param dir_ptr Prediction direction for use in AC prediction |
| 399 | */ |
| 400 | static inline int ff_vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n, |
| 401 | int a_avail, int c_avail, |
| 402 | int16_t **dc_val_ptr, int *dir_ptr) |
| 403 | { |
| 404 | int a, b, c, wrap, pred; |
| 405 | int16_t *dc_val; |
| 406 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; |
| 407 | int q1, q2 = 0; |
| 408 | int dqscale_index; |
| 409 | |
| 410 | wrap = s->block_wrap[n]; |
| 411 | dc_val = s->dc_val[0] + s->block_index[n]; |
| 412 | |
| 413 | /* B A |
| 414 | * C X |
| 415 | */ |
| 416 | c = dc_val[ - 1]; |
| 417 | b = dc_val[ - 1 - wrap]; |
| 418 | a = dc_val[ - wrap]; |
| 419 | /* scale predictors if needed */ |
| 420 | q1 = s->current_picture.qscale_table[mb_pos]; |
| 421 | dqscale_index = s->y_dc_scale_table[q1] - 1; |
| 422 | if (dqscale_index < 0) |
| 423 | return 0; |
| 424 | if (c_avail && (n != 1 && n != 3)) { |
| 425 | q2 = s->current_picture.qscale_table[mb_pos - 1]; |
| 426 | if (q2 && q2 != q1) |
| 427 | c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18; |
| 428 | } |
| 429 | if (a_avail && (n != 2 && n != 3)) { |
| 430 | q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride]; |
| 431 | if (q2 && q2 != q1) |
| 432 | a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18; |
| 433 | } |
| 434 | if (a_avail && c_avail && (n != 3)) { |
| 435 | int off = mb_pos; |
| 436 | if (n != 1) |
| 437 | off--; |
| 438 | if (n != 2) |
| 439 | off -= s->mb_stride; |
| 440 | q2 = s->current_picture.qscale_table[off]; |
| 441 | if (q2 && q2 != q1) |
| 442 | b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[dqscale_index] + 0x20000) >> 18; |
| 443 | } |
| 444 | |
| 445 | if (a_avail && c_avail) { |
| 446 | if (abs(a - b) <= abs(b - c)) { |
| 447 | pred = c; |
| 448 | *dir_ptr = 1; // left |
| 449 | } else { |
| 450 | pred = a; |
| 451 | *dir_ptr = 0; // top |
| 452 | } |
| 453 | } else if (a_avail) { |
| 454 | pred = a; |
| 455 | *dir_ptr = 0; // top |
| 456 | } else if (c_avail) { |
| 457 | pred = c; |
| 458 | *dir_ptr = 1; // left |
| 459 | } else { |
| 460 | pred = 0; |
| 461 | *dir_ptr = 1; // left |
| 462 | } |
| 463 | |
| 464 | /* update predictor */ |
| 465 | *dc_val_ptr = &dc_val[0]; |
| 466 | return pred; |
| 467 | } |
| 468 | |
| 469 | /** @} */ // Block group |
| 470 | |
| 471 | /** |
| 472 | * @name VC1 Macroblock-level functions in Simple/Main Profiles |
| 473 | * @see 7.1.4, p91 and 8.1.1.7, p(1)04 |
| 474 | * @{ |
| 475 | */ |
| 476 | |
| 477 | static inline int vc1_coded_block_pred(MpegEncContext * s, int n, |
| 478 | uint8_t **coded_block_ptr) |
| 479 | { |
| 480 | int xy, wrap, pred, a, b, c; |
| 481 | |
| 482 | xy = s->block_index[n]; |
| 483 | wrap = s->b8_stride; |
| 484 | |
| 485 | /* B C |
| 486 | * A X |
| 487 | */ |
| 488 | a = s->coded_block[xy - 1 ]; |
| 489 | b = s->coded_block[xy - 1 - wrap]; |
| 490 | c = s->coded_block[xy - wrap]; |
| 491 | |
| 492 | if (b == c) { |
| 493 | pred = a; |
| 494 | } else { |
| 495 | pred = c; |
| 496 | } |
| 497 | |
| 498 | /* store value */ |
| 499 | *coded_block_ptr = &s->coded_block[xy]; |
| 500 | |
| 501 | return pred; |
| 502 | } |
| 503 | |
| 504 | /** |
| 505 | * Decode one AC coefficient |
| 506 | * @param v The VC1 context |
| 507 | * @param last Last coefficient |
| 508 | * @param skip How much zero coefficients to skip |
| 509 | * @param value Decoded AC coefficient value |
| 510 | * @param codingset set of VLC to decode data |
| 511 | * @see 8.1.3.4 |
| 512 | */ |
| 513 | static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, |
| 514 | int *value, int codingset) |
| 515 | { |
| 516 | GetBitContext *gb = &v->s.gb; |
| 517 | int index, escape, run = 0, level = 0, lst = 0; |
| 518 | |
| 519 | index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3); |
| 520 | if (index != ff_vc1_ac_sizes[codingset] - 1) { |
| 521 | run = vc1_index_decode_table[codingset][index][0]; |
| 522 | level = vc1_index_decode_table[codingset][index][1]; |
| 523 | lst = index >= vc1_last_decode_table[codingset] || get_bits_left(gb) < 0; |
| 524 | if (get_bits1(gb)) |
| 525 | level = -level; |
| 526 | } else { |
| 527 | escape = decode210(gb); |
| 528 | if (escape != 2) { |
| 529 | index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3); |
| 530 | run = vc1_index_decode_table[codingset][index][0]; |
| 531 | level = vc1_index_decode_table[codingset][index][1]; |
| 532 | lst = index >= vc1_last_decode_table[codingset]; |
| 533 | if (escape == 0) { |
| 534 | if (lst) |
| 535 | level += vc1_last_delta_level_table[codingset][run]; |
| 536 | else |
| 537 | level += vc1_delta_level_table[codingset][run]; |
| 538 | } else { |
| 539 | if (lst) |
| 540 | run += vc1_last_delta_run_table[codingset][level] + 1; |
| 541 | else |
| 542 | run += vc1_delta_run_table[codingset][level] + 1; |
| 543 | } |
| 544 | if (get_bits1(gb)) |
| 545 | level = -level; |
| 546 | } else { |
| 547 | int sign; |
| 548 | lst = get_bits1(gb); |
| 549 | if (v->s.esc3_level_length == 0) { |
| 550 | if (v->pq < 8 || v->dquantfrm) { // table 59 |
| 551 | v->s.esc3_level_length = get_bits(gb, 3); |
| 552 | if (!v->s.esc3_level_length) |
| 553 | v->s.esc3_level_length = get_bits(gb, 2) + 8; |
| 554 | } else { // table 60 |
| 555 | v->s.esc3_level_length = get_unary(gb, 1, 6) + 2; |
| 556 | } |
| 557 | v->s.esc3_run_length = 3 + get_bits(gb, 2); |
| 558 | } |
| 559 | run = get_bits(gb, v->s.esc3_run_length); |
| 560 | sign = get_bits1(gb); |
| 561 | level = get_bits(gb, v->s.esc3_level_length); |
| 562 | if (sign) |
| 563 | level = -level; |
| 564 | } |
| 565 | } |
| 566 | |
| 567 | *last = lst; |
| 568 | *skip = run; |
| 569 | *value = level; |
| 570 | } |
| 571 | |
| 572 | /** Decode intra block in intra frames - should be faster than decode_intra_block |
| 573 | * @param v VC1Context |
| 574 | * @param block block to decode |
| 575 | * @param[in] n subblock index |
| 576 | * @param coded are AC coeffs present or not |
| 577 | * @param codingset set of VLC to decode data |
| 578 | */ |
| 579 | static int vc1_decode_i_block(VC1Context *v, int16_t block[64], int n, |
| 580 | int coded, int codingset) |
| 581 | { |
| 582 | GetBitContext *gb = &v->s.gb; |
| 583 | MpegEncContext *s = &v->s; |
| 584 | int dc_pred_dir = 0; /* Direction of the DC prediction used */ |
| 585 | int i; |
| 586 | int16_t *dc_val; |
| 587 | int16_t *ac_val, *ac_val2; |
| 588 | int dcdiff; |
| 589 | |
| 590 | /* Get DC differential */ |
| 591 | if (n < 4) { |
| 592 | dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); |
| 593 | } else { |
| 594 | dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); |
| 595 | } |
| 596 | if (dcdiff < 0) { |
| 597 | av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n"); |
| 598 | return -1; |
| 599 | } |
| 600 | if (dcdiff) { |
| 601 | if (dcdiff == 119 /* ESC index value */) { |
| 602 | /* TODO: Optimize */ |
| 603 | if (v->pq == 1) dcdiff = get_bits(gb, 10); |
| 604 | else if (v->pq == 2) dcdiff = get_bits(gb, 9); |
| 605 | else dcdiff = get_bits(gb, 8); |
| 606 | } else { |
| 607 | if (v->pq == 1) |
| 608 | dcdiff = (dcdiff << 2) + get_bits(gb, 2) - 3; |
| 609 | else if (v->pq == 2) |
| 610 | dcdiff = (dcdiff << 1) + get_bits1(gb) - 1; |
| 611 | } |
| 612 | if (get_bits1(gb)) |
| 613 | dcdiff = -dcdiff; |
| 614 | } |
| 615 | |
| 616 | /* Prediction */ |
| 617 | dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir); |
| 618 | *dc_val = dcdiff; |
| 619 | |
| 620 | /* Store the quantized DC coeff, used for prediction */ |
| 621 | if (n < 4) { |
| 622 | block[0] = dcdiff * s->y_dc_scale; |
| 623 | } else { |
| 624 | block[0] = dcdiff * s->c_dc_scale; |
| 625 | } |
| 626 | /* Skip ? */ |
| 627 | if (!coded) { |
| 628 | goto not_coded; |
| 629 | } |
| 630 | |
| 631 | // AC Decoding |
| 632 | i = 1; |
| 633 | |
| 634 | { |
| 635 | int last = 0, skip, value; |
| 636 | const uint8_t *zz_table; |
| 637 | int scale; |
| 638 | int k; |
| 639 | |
| 640 | scale = v->pq * 2 + v->halfpq; |
| 641 | |
| 642 | if (v->s.ac_pred) { |
| 643 | if (!dc_pred_dir) |
| 644 | zz_table = v->zz_8x8[2]; |
| 645 | else |
| 646 | zz_table = v->zz_8x8[3]; |
| 647 | } else |
| 648 | zz_table = v->zz_8x8[1]; |
| 649 | |
| 650 | ac_val = s->ac_val[0][0] + s->block_index[n] * 16; |
| 651 | ac_val2 = ac_val; |
| 652 | if (dc_pred_dir) // left |
| 653 | ac_val -= 16; |
| 654 | else // top |
| 655 | ac_val -= 16 * s->block_wrap[n]; |
| 656 | |
| 657 | while (!last) { |
| 658 | vc1_decode_ac_coeff(v, &last, &skip, &value, codingset); |
| 659 | i += skip; |
| 660 | if (i > 63) |
| 661 | break; |
| 662 | block[zz_table[i++]] = value; |
| 663 | } |
| 664 | |
| 665 | /* apply AC prediction if needed */ |
| 666 | if (s->ac_pred) { |
| 667 | if (dc_pred_dir) { // left |
| 668 | for (k = 1; k < 8; k++) |
| 669 | block[k << v->left_blk_sh] += ac_val[k]; |
| 670 | } else { // top |
| 671 | for (k = 1; k < 8; k++) |
| 672 | block[k << v->top_blk_sh] += ac_val[k + 8]; |
| 673 | } |
| 674 | } |
| 675 | /* save AC coeffs for further prediction */ |
| 676 | for (k = 1; k < 8; k++) { |
| 677 | ac_val2[k] = block[k << v->left_blk_sh]; |
| 678 | ac_val2[k + 8] = block[k << v->top_blk_sh]; |
| 679 | } |
| 680 | |
| 681 | /* scale AC coeffs */ |
| 682 | for (k = 1; k < 64; k++) |
| 683 | if (block[k]) { |
| 684 | block[k] *= scale; |
| 685 | if (!v->pquantizer) |
| 686 | block[k] += (block[k] < 0) ? -v->pq : v->pq; |
| 687 | } |
| 688 | |
| 689 | if (s->ac_pred) i = 63; |
| 690 | } |
| 691 | |
| 692 | not_coded: |
| 693 | if (!coded) { |
| 694 | int k, scale; |
| 695 | ac_val = s->ac_val[0][0] + s->block_index[n] * 16; |
| 696 | ac_val2 = ac_val; |
| 697 | |
| 698 | i = 0; |
| 699 | scale = v->pq * 2 + v->halfpq; |
| 700 | memset(ac_val2, 0, 16 * 2); |
| 701 | if (dc_pred_dir) { // left |
| 702 | ac_val -= 16; |
| 703 | if (s->ac_pred) |
| 704 | memcpy(ac_val2, ac_val, 8 * 2); |
| 705 | } else { // top |
| 706 | ac_val -= 16 * s->block_wrap[n]; |
| 707 | if (s->ac_pred) |
| 708 | memcpy(ac_val2 + 8, ac_val + 8, 8 * 2); |
| 709 | } |
| 710 | |
| 711 | /* apply AC prediction if needed */ |
| 712 | if (s->ac_pred) { |
| 713 | if (dc_pred_dir) { //left |
| 714 | for (k = 1; k < 8; k++) { |
| 715 | block[k << v->left_blk_sh] = ac_val[k] * scale; |
| 716 | if (!v->pquantizer && block[k << v->left_blk_sh]) |
| 717 | block[k << v->left_blk_sh] += (block[k << v->left_blk_sh] < 0) ? -v->pq : v->pq; |
| 718 | } |
| 719 | } else { // top |
| 720 | for (k = 1; k < 8; k++) { |
| 721 | block[k << v->top_blk_sh] = ac_val[k + 8] * scale; |
| 722 | if (!v->pquantizer && block[k << v->top_blk_sh]) |
| 723 | block[k << v->top_blk_sh] += (block[k << v->top_blk_sh] < 0) ? -v->pq : v->pq; |
| 724 | } |
| 725 | } |
| 726 | i = 63; |
| 727 | } |
| 728 | } |
| 729 | s->block_last_index[n] = i; |
| 730 | |
| 731 | return 0; |
| 732 | } |
| 733 | |
| 734 | /** Decode intra block in intra frames - should be faster than decode_intra_block |
| 735 | * @param v VC1Context |
| 736 | * @param block block to decode |
| 737 | * @param[in] n subblock number |
| 738 | * @param coded are AC coeffs present or not |
| 739 | * @param codingset set of VLC to decode data |
| 740 | * @param mquant quantizer value for this macroblock |
| 741 | */ |
| 742 | static int vc1_decode_i_block_adv(VC1Context *v, int16_t block[64], int n, |
| 743 | int coded, int codingset, int mquant) |
| 744 | { |
| 745 | GetBitContext *gb = &v->s.gb; |
| 746 | MpegEncContext *s = &v->s; |
| 747 | int dc_pred_dir = 0; /* Direction of the DC prediction used */ |
| 748 | int i; |
| 749 | int16_t *dc_val = NULL; |
| 750 | int16_t *ac_val, *ac_val2; |
| 751 | int dcdiff; |
| 752 | int a_avail = v->a_avail, c_avail = v->c_avail; |
| 753 | int use_pred = s->ac_pred; |
| 754 | int scale; |
| 755 | int q1, q2 = 0; |
| 756 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; |
| 757 | |
| 758 | /* Get DC differential */ |
| 759 | if (n < 4) { |
| 760 | dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); |
| 761 | } else { |
| 762 | dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); |
| 763 | } |
| 764 | if (dcdiff < 0) { |
| 765 | av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n"); |
| 766 | return -1; |
| 767 | } |
| 768 | if (dcdiff) { |
| 769 | if (dcdiff == 119 /* ESC index value */) { |
| 770 | /* TODO: Optimize */ |
| 771 | if (mquant == 1) dcdiff = get_bits(gb, 10); |
| 772 | else if (mquant == 2) dcdiff = get_bits(gb, 9); |
| 773 | else dcdiff = get_bits(gb, 8); |
| 774 | } else { |
| 775 | if (mquant == 1) |
| 776 | dcdiff = (dcdiff << 2) + get_bits(gb, 2) - 3; |
| 777 | else if (mquant == 2) |
| 778 | dcdiff = (dcdiff << 1) + get_bits1(gb) - 1; |
| 779 | } |
| 780 | if (get_bits1(gb)) |
| 781 | dcdiff = -dcdiff; |
| 782 | } |
| 783 | |
| 784 | /* Prediction */ |
| 785 | dcdiff += ff_vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir); |
| 786 | *dc_val = dcdiff; |
| 787 | |
| 788 | /* Store the quantized DC coeff, used for prediction */ |
| 789 | if (n < 4) { |
| 790 | block[0] = dcdiff * s->y_dc_scale; |
| 791 | } else { |
| 792 | block[0] = dcdiff * s->c_dc_scale; |
| 793 | } |
| 794 | |
| 795 | //AC Decoding |
| 796 | i = 1; |
| 797 | |
| 798 | /* check if AC is needed at all */ |
| 799 | if (!a_avail && !c_avail) |
| 800 | use_pred = 0; |
| 801 | ac_val = s->ac_val[0][0] + s->block_index[n] * 16; |
| 802 | ac_val2 = ac_val; |
| 803 | |
| 804 | scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0); |
| 805 | |
| 806 | if (dc_pred_dir) // left |
| 807 | ac_val -= 16; |
| 808 | else // top |
| 809 | ac_val -= 16 * s->block_wrap[n]; |
| 810 | |
| 811 | q1 = s->current_picture.qscale_table[mb_pos]; |
| 812 | if ( dc_pred_dir && c_avail && mb_pos) |
| 813 | q2 = s->current_picture.qscale_table[mb_pos - 1]; |
| 814 | if (!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) |
| 815 | q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride]; |
| 816 | if ( dc_pred_dir && n == 1) |
| 817 | q2 = q1; |
| 818 | if (!dc_pred_dir && n == 2) |
| 819 | q2 = q1; |
| 820 | if (n == 3) |
| 821 | q2 = q1; |
| 822 | |
| 823 | if (coded) { |
| 824 | int last = 0, skip, value; |
| 825 | const uint8_t *zz_table; |
| 826 | int k; |
| 827 | |
| 828 | if (v->s.ac_pred) { |
| 829 | if (!use_pred && v->fcm == ILACE_FRAME) { |
| 830 | zz_table = v->zzi_8x8; |
| 831 | } else { |
| 832 | if (!dc_pred_dir) // top |
| 833 | zz_table = v->zz_8x8[2]; |
| 834 | else // left |
| 835 | zz_table = v->zz_8x8[3]; |
| 836 | } |
| 837 | } else { |
| 838 | if (v->fcm != ILACE_FRAME) |
| 839 | zz_table = v->zz_8x8[1]; |
| 840 | else |
| 841 | zz_table = v->zzi_8x8; |
| 842 | } |
| 843 | |
| 844 | while (!last) { |
| 845 | vc1_decode_ac_coeff(v, &last, &skip, &value, codingset); |
| 846 | i += skip; |
| 847 | if (i > 63) |
| 848 | break; |
| 849 | block[zz_table[i++]] = value; |
| 850 | } |
| 851 | |
| 852 | /* apply AC prediction if needed */ |
| 853 | if (use_pred) { |
| 854 | /* scale predictors if needed*/ |
| 855 | if (q2 && q1 != q2) { |
| 856 | q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; |
| 857 | q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; |
| 858 | |
| 859 | if (q1 < 1) |
| 860 | return AVERROR_INVALIDDATA; |
| 861 | if (dc_pred_dir) { // left |
| 862 | for (k = 1; k < 8; k++) |
| 863 | block[k << v->left_blk_sh] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; |
| 864 | } else { // top |
| 865 | for (k = 1; k < 8; k++) |
| 866 | block[k << v->top_blk_sh] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; |
| 867 | } |
| 868 | } else { |
| 869 | if (dc_pred_dir) { //left |
| 870 | for (k = 1; k < 8; k++) |
| 871 | block[k << v->left_blk_sh] += ac_val[k]; |
| 872 | } else { //top |
| 873 | for (k = 1; k < 8; k++) |
| 874 | block[k << v->top_blk_sh] += ac_val[k + 8]; |
| 875 | } |
| 876 | } |
| 877 | } |
| 878 | /* save AC coeffs for further prediction */ |
| 879 | for (k = 1; k < 8; k++) { |
| 880 | ac_val2[k ] = block[k << v->left_blk_sh]; |
| 881 | ac_val2[k + 8] = block[k << v->top_blk_sh]; |
| 882 | } |
| 883 | |
| 884 | /* scale AC coeffs */ |
| 885 | for (k = 1; k < 64; k++) |
| 886 | if (block[k]) { |
| 887 | block[k] *= scale; |
| 888 | if (!v->pquantizer) |
| 889 | block[k] += (block[k] < 0) ? -mquant : mquant; |
| 890 | } |
| 891 | |
| 892 | if (use_pred) i = 63; |
| 893 | } else { // no AC coeffs |
| 894 | int k; |
| 895 | |
| 896 | memset(ac_val2, 0, 16 * 2); |
| 897 | if (dc_pred_dir) { // left |
| 898 | if (use_pred) { |
| 899 | memcpy(ac_val2, ac_val, 8 * 2); |
| 900 | if (q2 && q1 != q2) { |
| 901 | q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; |
| 902 | q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; |
| 903 | if (q1 < 1) |
| 904 | return AVERROR_INVALIDDATA; |
| 905 | for (k = 1; k < 8; k++) |
| 906 | ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; |
| 907 | } |
| 908 | } |
| 909 | } else { // top |
| 910 | if (use_pred) { |
| 911 | memcpy(ac_val2 + 8, ac_val + 8, 8 * 2); |
| 912 | if (q2 && q1 != q2) { |
| 913 | q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; |
| 914 | q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; |
| 915 | if (q1 < 1) |
| 916 | return AVERROR_INVALIDDATA; |
| 917 | for (k = 1; k < 8; k++) |
| 918 | ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; |
| 919 | } |
| 920 | } |
| 921 | } |
| 922 | |
| 923 | /* apply AC prediction if needed */ |
| 924 | if (use_pred) { |
| 925 | if (dc_pred_dir) { // left |
| 926 | for (k = 1; k < 8; k++) { |
| 927 | block[k << v->left_blk_sh] = ac_val2[k] * scale; |
| 928 | if (!v->pquantizer && block[k << v->left_blk_sh]) |
| 929 | block[k << v->left_blk_sh] += (block[k << v->left_blk_sh] < 0) ? -mquant : mquant; |
| 930 | } |
| 931 | } else { // top |
| 932 | for (k = 1; k < 8; k++) { |
| 933 | block[k << v->top_blk_sh] = ac_val2[k + 8] * scale; |
| 934 | if (!v->pquantizer && block[k << v->top_blk_sh]) |
| 935 | block[k << v->top_blk_sh] += (block[k << v->top_blk_sh] < 0) ? -mquant : mquant; |
| 936 | } |
| 937 | } |
| 938 | i = 63; |
| 939 | } |
| 940 | } |
| 941 | s->block_last_index[n] = i; |
| 942 | |
| 943 | return 0; |
| 944 | } |
| 945 | |
| 946 | /** Decode intra block in inter frames - more generic version than vc1_decode_i_block |
| 947 | * @param v VC1Context |
| 948 | * @param block block to decode |
| 949 | * @param[in] n subblock index |
| 950 | * @param coded are AC coeffs present or not |
| 951 | * @param mquant block quantizer |
| 952 | * @param codingset set of VLC to decode data |
| 953 | */ |
| 954 | static int vc1_decode_intra_block(VC1Context *v, int16_t block[64], int n, |
| 955 | int coded, int mquant, int codingset) |
| 956 | { |
| 957 | GetBitContext *gb = &v->s.gb; |
| 958 | MpegEncContext *s = &v->s; |
| 959 | int dc_pred_dir = 0; /* Direction of the DC prediction used */ |
| 960 | int i; |
| 961 | int16_t *dc_val = NULL; |
| 962 | int16_t *ac_val, *ac_val2; |
| 963 | int dcdiff; |
| 964 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; |
| 965 | int a_avail = v->a_avail, c_avail = v->c_avail; |
| 966 | int use_pred = s->ac_pred; |
| 967 | int scale; |
| 968 | int q1, q2 = 0; |
| 969 | |
| 970 | s->bdsp.clear_block(block); |
| 971 | |
| 972 | /* XXX: Guard against dumb values of mquant */ |
| 973 | mquant = (mquant < 1) ? 0 : ((mquant > 31) ? 31 : mquant); |
| 974 | |
| 975 | /* Set DC scale - y and c use the same */ |
| 976 | s->y_dc_scale = s->y_dc_scale_table[mquant]; |
| 977 | s->c_dc_scale = s->c_dc_scale_table[mquant]; |
| 978 | |
| 979 | /* Get DC differential */ |
| 980 | if (n < 4) { |
| 981 | dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); |
| 982 | } else { |
| 983 | dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); |
| 984 | } |
| 985 | if (dcdiff < 0) { |
| 986 | av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n"); |
| 987 | return -1; |
| 988 | } |
| 989 | if (dcdiff) { |
| 990 | if (dcdiff == 119 /* ESC index value */) { |
| 991 | /* TODO: Optimize */ |
| 992 | if (mquant == 1) dcdiff = get_bits(gb, 10); |
| 993 | else if (mquant == 2) dcdiff = get_bits(gb, 9); |
| 994 | else dcdiff = get_bits(gb, 8); |
| 995 | } else { |
| 996 | if (mquant == 1) |
| 997 | dcdiff = (dcdiff << 2) + get_bits(gb, 2) - 3; |
| 998 | else if (mquant == 2) |
| 999 | dcdiff = (dcdiff << 1) + get_bits1(gb) - 1; |
| 1000 | } |
| 1001 | if (get_bits1(gb)) |
| 1002 | dcdiff = -dcdiff; |
| 1003 | } |
| 1004 | |
| 1005 | /* Prediction */ |
| 1006 | dcdiff += ff_vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir); |
| 1007 | *dc_val = dcdiff; |
| 1008 | |
| 1009 | /* Store the quantized DC coeff, used for prediction */ |
| 1010 | |
| 1011 | if (n < 4) { |
| 1012 | block[0] = dcdiff * s->y_dc_scale; |
| 1013 | } else { |
| 1014 | block[0] = dcdiff * s->c_dc_scale; |
| 1015 | } |
| 1016 | |
| 1017 | //AC Decoding |
| 1018 | i = 1; |
| 1019 | |
| 1020 | /* check if AC is needed at all and adjust direction if needed */ |
| 1021 | if (!a_avail) dc_pred_dir = 1; |
| 1022 | if (!c_avail) dc_pred_dir = 0; |
| 1023 | if (!a_avail && !c_avail) use_pred = 0; |
| 1024 | ac_val = s->ac_val[0][0] + s->block_index[n] * 16; |
| 1025 | ac_val2 = ac_val; |
| 1026 | |
| 1027 | scale = mquant * 2 + v->halfpq; |
| 1028 | |
| 1029 | if (dc_pred_dir) //left |
| 1030 | ac_val -= 16; |
| 1031 | else //top |
| 1032 | ac_val -= 16 * s->block_wrap[n]; |
| 1033 | |
| 1034 | q1 = s->current_picture.qscale_table[mb_pos]; |
| 1035 | if (dc_pred_dir && c_avail && mb_pos) |
| 1036 | q2 = s->current_picture.qscale_table[mb_pos - 1]; |
| 1037 | if (!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) |
| 1038 | q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride]; |
| 1039 | if ( dc_pred_dir && n == 1) |
| 1040 | q2 = q1; |
| 1041 | if (!dc_pred_dir && n == 2) |
| 1042 | q2 = q1; |
| 1043 | if (n == 3) q2 = q1; |
| 1044 | |
| 1045 | if (coded) { |
| 1046 | int last = 0, skip, value; |
| 1047 | int k; |
| 1048 | |
| 1049 | while (!last) { |
| 1050 | vc1_decode_ac_coeff(v, &last, &skip, &value, codingset); |
| 1051 | i += skip; |
| 1052 | if (i > 63) |
| 1053 | break; |
| 1054 | if (v->fcm == PROGRESSIVE) |
| 1055 | block[v->zz_8x8[0][i++]] = value; |
| 1056 | else { |
| 1057 | if (use_pred && (v->fcm == ILACE_FRAME)) { |
| 1058 | if (!dc_pred_dir) // top |
| 1059 | block[v->zz_8x8[2][i++]] = value; |
| 1060 | else // left |
| 1061 | block[v->zz_8x8[3][i++]] = value; |
| 1062 | } else { |
| 1063 | block[v->zzi_8x8[i++]] = value; |
| 1064 | } |
| 1065 | } |
| 1066 | } |
| 1067 | |
| 1068 | /* apply AC prediction if needed */ |
| 1069 | if (use_pred) { |
| 1070 | /* scale predictors if needed*/ |
| 1071 | if (q2 && q1 != q2) { |
| 1072 | q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; |
| 1073 | q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; |
| 1074 | |
| 1075 | if (q1 < 1) |
| 1076 | return AVERROR_INVALIDDATA; |
| 1077 | if (dc_pred_dir) { // left |
| 1078 | for (k = 1; k < 8; k++) |
| 1079 | block[k << v->left_blk_sh] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; |
| 1080 | } else { //top |
| 1081 | for (k = 1; k < 8; k++) |
| 1082 | block[k << v->top_blk_sh] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; |
| 1083 | } |
| 1084 | } else { |
| 1085 | if (dc_pred_dir) { // left |
| 1086 | for (k = 1; k < 8; k++) |
| 1087 | block[k << v->left_blk_sh] += ac_val[k]; |
| 1088 | } else { // top |
| 1089 | for (k = 1; k < 8; k++) |
| 1090 | block[k << v->top_blk_sh] += ac_val[k + 8]; |
| 1091 | } |
| 1092 | } |
| 1093 | } |
| 1094 | /* save AC coeffs for further prediction */ |
| 1095 | for (k = 1; k < 8; k++) { |
| 1096 | ac_val2[k ] = block[k << v->left_blk_sh]; |
| 1097 | ac_val2[k + 8] = block[k << v->top_blk_sh]; |
| 1098 | } |
| 1099 | |
| 1100 | /* scale AC coeffs */ |
| 1101 | for (k = 1; k < 64; k++) |
| 1102 | if (block[k]) { |
| 1103 | block[k] *= scale; |
| 1104 | if (!v->pquantizer) |
| 1105 | block[k] += (block[k] < 0) ? -mquant : mquant; |
| 1106 | } |
| 1107 | |
| 1108 | if (use_pred) i = 63; |
| 1109 | } else { // no AC coeffs |
| 1110 | int k; |
| 1111 | |
| 1112 | memset(ac_val2, 0, 16 * 2); |
| 1113 | if (dc_pred_dir) { // left |
| 1114 | if (use_pred) { |
| 1115 | memcpy(ac_val2, ac_val, 8 * 2); |
| 1116 | if (q2 && q1 != q2) { |
| 1117 | q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; |
| 1118 | q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; |
| 1119 | if (q1 < 1) |
| 1120 | return AVERROR_INVALIDDATA; |
| 1121 | for (k = 1; k < 8; k++) |
| 1122 | ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; |
| 1123 | } |
| 1124 | } |
| 1125 | } else { // top |
| 1126 | if (use_pred) { |
| 1127 | memcpy(ac_val2 + 8, ac_val + 8, 8 * 2); |
| 1128 | if (q2 && q1 != q2) { |
| 1129 | q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; |
| 1130 | q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; |
| 1131 | if (q1 < 1) |
| 1132 | return AVERROR_INVALIDDATA; |
| 1133 | for (k = 1; k < 8; k++) |
| 1134 | ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; |
| 1135 | } |
| 1136 | } |
| 1137 | } |
| 1138 | |
| 1139 | /* apply AC prediction if needed */ |
| 1140 | if (use_pred) { |
| 1141 | if (dc_pred_dir) { // left |
| 1142 | for (k = 1; k < 8; k++) { |
| 1143 | block[k << v->left_blk_sh] = ac_val2[k] * scale; |
| 1144 | if (!v->pquantizer && block[k << v->left_blk_sh]) |
| 1145 | block[k << v->left_blk_sh] += (block[k << v->left_blk_sh] < 0) ? -mquant : mquant; |
| 1146 | } |
| 1147 | } else { // top |
| 1148 | for (k = 1; k < 8; k++) { |
| 1149 | block[k << v->top_blk_sh] = ac_val2[k + 8] * scale; |
| 1150 | if (!v->pquantizer && block[k << v->top_blk_sh]) |
| 1151 | block[k << v->top_blk_sh] += (block[k << v->top_blk_sh] < 0) ? -mquant : mquant; |
| 1152 | } |
| 1153 | } |
| 1154 | i = 63; |
| 1155 | } |
| 1156 | } |
| 1157 | s->block_last_index[n] = i; |
| 1158 | |
| 1159 | return 0; |
| 1160 | } |
| 1161 | |
| 1162 | /** Decode P block |
| 1163 | */ |
| 1164 | static int vc1_decode_p_block(VC1Context *v, int16_t block[64], int n, |
| 1165 | int mquant, int ttmb, int first_block, |
| 1166 | uint8_t *dst, int linesize, int skip_block, |
| 1167 | int *ttmb_out) |
| 1168 | { |
| 1169 | MpegEncContext *s = &v->s; |
| 1170 | GetBitContext *gb = &s->gb; |
| 1171 | int i, j; |
| 1172 | int subblkpat = 0; |
| 1173 | int scale, off, idx, last, skip, value; |
| 1174 | int ttblk = ttmb & 7; |
| 1175 | int pat = 0; |
| 1176 | |
| 1177 | s->bdsp.clear_block(block); |
| 1178 | |
| 1179 | if (ttmb == -1) { |
| 1180 | ttblk = ff_vc1_ttblk_to_tt[v->tt_index][get_vlc2(gb, ff_vc1_ttblk_vlc[v->tt_index].table, VC1_TTBLK_VLC_BITS, 1)]; |
| 1181 | } |
| 1182 | if (ttblk == TT_4X4) { |
| 1183 | subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1); |
| 1184 | } |
| 1185 | if ((ttblk != TT_8X8 && ttblk != TT_4X4) |
| 1186 | && ((v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block)) |
| 1187 | || (!v->res_rtm_flag && !first_block))) { |
| 1188 | subblkpat = decode012(gb); |
| 1189 | if (subblkpat) |
| 1190 | subblkpat ^= 3; // swap decoded pattern bits |
| 1191 | if (ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) |
| 1192 | ttblk = TT_8X4; |
| 1193 | if (ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) |
| 1194 | ttblk = TT_4X8; |
| 1195 | } |
| 1196 | scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0); |
| 1197 | |
| 1198 | // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT |
| 1199 | if (ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) { |
| 1200 | subblkpat = 2 - (ttblk == TT_8X4_TOP); |
| 1201 | ttblk = TT_8X4; |
| 1202 | } |
| 1203 | if (ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) { |
| 1204 | subblkpat = 2 - (ttblk == TT_4X8_LEFT); |
| 1205 | ttblk = TT_4X8; |
| 1206 | } |
| 1207 | switch (ttblk) { |
| 1208 | case TT_8X8: |
| 1209 | pat = 0xF; |
| 1210 | i = 0; |
| 1211 | last = 0; |
| 1212 | while (!last) { |
| 1213 | vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); |
| 1214 | i += skip; |
| 1215 | if (i > 63) |
| 1216 | break; |
| 1217 | if (!v->fcm) |
| 1218 | idx = v->zz_8x8[0][i++]; |
| 1219 | else |
| 1220 | idx = v->zzi_8x8[i++]; |
| 1221 | block[idx] = value * scale; |
| 1222 | if (!v->pquantizer) |
| 1223 | block[idx] += (block[idx] < 0) ? -mquant : mquant; |
| 1224 | } |
| 1225 | if (!skip_block) { |
| 1226 | if (i == 1) |
| 1227 | v->vc1dsp.vc1_inv_trans_8x8_dc(dst, linesize, block); |
| 1228 | else { |
| 1229 | v->vc1dsp.vc1_inv_trans_8x8(block); |
| 1230 | s->idsp.add_pixels_clamped(block, dst, linesize); |
| 1231 | } |
| 1232 | } |
| 1233 | break; |
| 1234 | case TT_4X4: |
| 1235 | pat = ~subblkpat & 0xF; |
| 1236 | for (j = 0; j < 4; j++) { |
| 1237 | last = subblkpat & (1 << (3 - j)); |
| 1238 | i = 0; |
| 1239 | off = (j & 1) * 4 + (j & 2) * 16; |
| 1240 | while (!last) { |
| 1241 | vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); |
| 1242 | i += skip; |
| 1243 | if (i > 15) |
| 1244 | break; |
| 1245 | if (!v->fcm) |
| 1246 | idx = ff_vc1_simple_progressive_4x4_zz[i++]; |
| 1247 | else |
| 1248 | idx = ff_vc1_adv_interlaced_4x4_zz[i++]; |
| 1249 | block[idx + off] = value * scale; |
| 1250 | if (!v->pquantizer) |
| 1251 | block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant; |
| 1252 | } |
| 1253 | if (!(subblkpat & (1 << (3 - j))) && !skip_block) { |
| 1254 | if (i == 1) |
| 1255 | v->vc1dsp.vc1_inv_trans_4x4_dc(dst + (j & 1) * 4 + (j & 2) * 2 * linesize, linesize, block + off); |
| 1256 | else |
| 1257 | v->vc1dsp.vc1_inv_trans_4x4(dst + (j & 1) * 4 + (j & 2) * 2 * linesize, linesize, block + off); |
| 1258 | } |
| 1259 | } |
| 1260 | break; |
| 1261 | case TT_8X4: |
| 1262 | pat = ~((subblkpat & 2) * 6 + (subblkpat & 1) * 3) & 0xF; |
| 1263 | for (j = 0; j < 2; j++) { |
| 1264 | last = subblkpat & (1 << (1 - j)); |
| 1265 | i = 0; |
| 1266 | off = j * 32; |
| 1267 | while (!last) { |
| 1268 | vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); |
| 1269 | i += skip; |
| 1270 | if (i > 31) |
| 1271 | break; |
| 1272 | if (!v->fcm) |
| 1273 | idx = v->zz_8x4[i++] + off; |
| 1274 | else |
| 1275 | idx = ff_vc1_adv_interlaced_8x4_zz[i++] + off; |
| 1276 | block[idx] = value * scale; |
| 1277 | if (!v->pquantizer) |
| 1278 | block[idx] += (block[idx] < 0) ? -mquant : mquant; |
| 1279 | } |
| 1280 | if (!(subblkpat & (1 << (1 - j))) && !skip_block) { |
| 1281 | if (i == 1) |
| 1282 | v->vc1dsp.vc1_inv_trans_8x4_dc(dst + j * 4 * linesize, linesize, block + off); |
| 1283 | else |
| 1284 | v->vc1dsp.vc1_inv_trans_8x4(dst + j * 4 * linesize, linesize, block + off); |
| 1285 | } |
| 1286 | } |
| 1287 | break; |
| 1288 | case TT_4X8: |
| 1289 | pat = ~(subblkpat * 5) & 0xF; |
| 1290 | for (j = 0; j < 2; j++) { |
| 1291 | last = subblkpat & (1 << (1 - j)); |
| 1292 | i = 0; |
| 1293 | off = j * 4; |
| 1294 | while (!last) { |
| 1295 | vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); |
| 1296 | i += skip; |
| 1297 | if (i > 31) |
| 1298 | break; |
| 1299 | if (!v->fcm) |
| 1300 | idx = v->zz_4x8[i++] + off; |
| 1301 | else |
| 1302 | idx = ff_vc1_adv_interlaced_4x8_zz[i++] + off; |
| 1303 | block[idx] = value * scale; |
| 1304 | if (!v->pquantizer) |
| 1305 | block[idx] += (block[idx] < 0) ? -mquant : mquant; |
| 1306 | } |
| 1307 | if (!(subblkpat & (1 << (1 - j))) && !skip_block) { |
| 1308 | if (i == 1) |
| 1309 | v->vc1dsp.vc1_inv_trans_4x8_dc(dst + j * 4, linesize, block + off); |
| 1310 | else |
| 1311 | v->vc1dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off); |
| 1312 | } |
| 1313 | } |
| 1314 | break; |
| 1315 | } |
| 1316 | if (ttmb_out) |
| 1317 | *ttmb_out |= ttblk << (n * 4); |
| 1318 | return pat; |
| 1319 | } |
| 1320 | |
| 1321 | /** @} */ // Macroblock group |
| 1322 | |
| 1323 | static const int size_table [6] = { 0, 2, 3, 4, 5, 8 }; |
| 1324 | static const int offset_table[6] = { 0, 1, 3, 7, 15, 31 }; |
| 1325 | |
| 1326 | /** Decode one P-frame MB |
| 1327 | */ |
| 1328 | static int vc1_decode_p_mb(VC1Context *v) |
| 1329 | { |
| 1330 | MpegEncContext *s = &v->s; |
| 1331 | GetBitContext *gb = &s->gb; |
| 1332 | int i, j; |
| 1333 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; |
| 1334 | int cbp; /* cbp decoding stuff */ |
| 1335 | int mqdiff, mquant; /* MB quantization */ |
| 1336 | int ttmb = v->ttfrm; /* MB Transform type */ |
| 1337 | |
| 1338 | int mb_has_coeffs = 1; /* last_flag */ |
| 1339 | int dmv_x, dmv_y; /* Differential MV components */ |
| 1340 | int index, index1; /* LUT indexes */ |
| 1341 | int val, sign; /* temp values */ |
| 1342 | int first_block = 1; |
| 1343 | int dst_idx, off; |
| 1344 | int skipped, fourmv; |
| 1345 | int block_cbp = 0, pat, block_tt = 0, block_intra = 0; |
| 1346 | |
| 1347 | mquant = v->pq; /* lossy initialization */ |
| 1348 | |
| 1349 | if (v->mv_type_is_raw) |
| 1350 | fourmv = get_bits1(gb); |
| 1351 | else |
| 1352 | fourmv = v->mv_type_mb_plane[mb_pos]; |
| 1353 | if (v->skip_is_raw) |
| 1354 | skipped = get_bits1(gb); |
| 1355 | else |
| 1356 | skipped = v->s.mbskip_table[mb_pos]; |
| 1357 | |
| 1358 | if (!fourmv) { /* 1MV mode */ |
| 1359 | if (!skipped) { |
| 1360 | GET_MVDATA(dmv_x, dmv_y); |
| 1361 | |
| 1362 | if (s->mb_intra) { |
| 1363 | s->current_picture.motion_val[1][s->block_index[0]][0] = 0; |
| 1364 | s->current_picture.motion_val[1][s->block_index[0]][1] = 0; |
| 1365 | } |
| 1366 | s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16; |
| 1367 | ff_vc1_pred_mv(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 0, 0); |
| 1368 | |
| 1369 | /* FIXME Set DC val for inter block ? */ |
| 1370 | if (s->mb_intra && !mb_has_coeffs) { |
| 1371 | GET_MQUANT(); |
| 1372 | s->ac_pred = get_bits1(gb); |
| 1373 | cbp = 0; |
| 1374 | } else if (mb_has_coeffs) { |
| 1375 | if (s->mb_intra) |
| 1376 | s->ac_pred = get_bits1(gb); |
| 1377 | cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); |
| 1378 | GET_MQUANT(); |
| 1379 | } else { |
| 1380 | mquant = v->pq; |
| 1381 | cbp = 0; |
| 1382 | } |
| 1383 | s->current_picture.qscale_table[mb_pos] = mquant; |
| 1384 | |
| 1385 | if (!v->ttmbf && !s->mb_intra && mb_has_coeffs) |
| 1386 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, |
| 1387 | VC1_TTMB_VLC_BITS, 2); |
| 1388 | if (!s->mb_intra) ff_vc1_mc_1mv(v, 0); |
| 1389 | dst_idx = 0; |
| 1390 | for (i = 0; i < 6; i++) { |
| 1391 | s->dc_val[0][s->block_index[i]] = 0; |
| 1392 | dst_idx += i >> 2; |
| 1393 | val = ((cbp >> (5 - i)) & 1); |
| 1394 | off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); |
| 1395 | v->mb_type[0][s->block_index[i]] = s->mb_intra; |
| 1396 | if (s->mb_intra) { |
| 1397 | /* check if prediction blocks A and C are available */ |
| 1398 | v->a_avail = v->c_avail = 0; |
| 1399 | if (i == 2 || i == 3 || !s->first_slice_line) |
| 1400 | v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; |
| 1401 | if (i == 1 || i == 3 || s->mb_x) |
| 1402 | v->c_avail = v->mb_type[0][s->block_index[i] - 1]; |
| 1403 | |
| 1404 | vc1_decode_intra_block(v, s->block[i], i, val, mquant, |
| 1405 | (i & 4) ? v->codingset2 : v->codingset); |
| 1406 | if ((i>3) && (s->flags & CODEC_FLAG_GRAY)) |
| 1407 | continue; |
| 1408 | v->vc1dsp.vc1_inv_trans_8x8(s->block[i]); |
| 1409 | if (v->rangeredfrm) |
| 1410 | for (j = 0; j < 64; j++) |
| 1411 | s->block[i][j] <<= 1; |
| 1412 | s->idsp.put_signed_pixels_clamped(s->block[i], |
| 1413 | s->dest[dst_idx] + off, |
| 1414 | i & 4 ? s->uvlinesize |
| 1415 | : s->linesize); |
| 1416 | if (v->pq >= 9 && v->overlap) { |
| 1417 | if (v->c_avail) |
| 1418 | v->vc1dsp.vc1_h_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize); |
| 1419 | if (v->a_avail) |
| 1420 | v->vc1dsp.vc1_v_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize); |
| 1421 | } |
| 1422 | block_cbp |= 0xF << (i << 2); |
| 1423 | block_intra |= 1 << i; |
| 1424 | } else if (val) { |
| 1425 | pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, |
| 1426 | s->dest[dst_idx] + off, (i & 4) ? s->uvlinesize : s->linesize, |
| 1427 | (i & 4) && (s->flags & CODEC_FLAG_GRAY), &block_tt); |
| 1428 | block_cbp |= pat << (i << 2); |
| 1429 | if (!v->ttmbf && ttmb < 8) |
| 1430 | ttmb = -1; |
| 1431 | first_block = 0; |
| 1432 | } |
| 1433 | } |
| 1434 | } else { // skipped |
| 1435 | s->mb_intra = 0; |
| 1436 | for (i = 0; i < 6; i++) { |
| 1437 | v->mb_type[0][s->block_index[i]] = 0; |
| 1438 | s->dc_val[0][s->block_index[i]] = 0; |
| 1439 | } |
| 1440 | s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP; |
| 1441 | s->current_picture.qscale_table[mb_pos] = 0; |
| 1442 | ff_vc1_pred_mv(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0, 0); |
| 1443 | ff_vc1_mc_1mv(v, 0); |
| 1444 | } |
| 1445 | } else { // 4MV mode |
| 1446 | if (!skipped /* unskipped MB */) { |
| 1447 | int intra_count = 0, coded_inter = 0; |
| 1448 | int is_intra[6], is_coded[6]; |
| 1449 | /* Get CBPCY */ |
| 1450 | cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); |
| 1451 | for (i = 0; i < 6; i++) { |
| 1452 | val = ((cbp >> (5 - i)) & 1); |
| 1453 | s->dc_val[0][s->block_index[i]] = 0; |
| 1454 | s->mb_intra = 0; |
| 1455 | if (i < 4) { |
| 1456 | dmv_x = dmv_y = 0; |
| 1457 | s->mb_intra = 0; |
| 1458 | mb_has_coeffs = 0; |
| 1459 | if (val) { |
| 1460 | GET_MVDATA(dmv_x, dmv_y); |
| 1461 | } |
| 1462 | ff_vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], 0, 0); |
| 1463 | if (!s->mb_intra) |
| 1464 | ff_vc1_mc_4mv_luma(v, i, 0, 0); |
| 1465 | intra_count += s->mb_intra; |
| 1466 | is_intra[i] = s->mb_intra; |
| 1467 | is_coded[i] = mb_has_coeffs; |
| 1468 | } |
| 1469 | if (i & 4) { |
| 1470 | is_intra[i] = (intra_count >= 3); |
| 1471 | is_coded[i] = val; |
| 1472 | } |
| 1473 | if (i == 4) |
| 1474 | ff_vc1_mc_4mv_chroma(v, 0); |
| 1475 | v->mb_type[0][s->block_index[i]] = is_intra[i]; |
| 1476 | if (!coded_inter) |
| 1477 | coded_inter = !is_intra[i] & is_coded[i]; |
| 1478 | } |
| 1479 | // if there are no coded blocks then don't do anything more |
| 1480 | dst_idx = 0; |
| 1481 | if (!intra_count && !coded_inter) |
| 1482 | goto end; |
| 1483 | GET_MQUANT(); |
| 1484 | s->current_picture.qscale_table[mb_pos] = mquant; |
| 1485 | /* test if block is intra and has pred */ |
| 1486 | { |
| 1487 | int intrapred = 0; |
| 1488 | for (i = 0; i < 6; i++) |
| 1489 | if (is_intra[i]) { |
| 1490 | if (((!s->first_slice_line || (i == 2 || i == 3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]]) |
| 1491 | || ((s->mb_x || (i == 1 || i == 3)) && v->mb_type[0][s->block_index[i] - 1])) { |
| 1492 | intrapred = 1; |
| 1493 | break; |
| 1494 | } |
| 1495 | } |
| 1496 | if (intrapred) |
| 1497 | s->ac_pred = get_bits1(gb); |
| 1498 | else |
| 1499 | s->ac_pred = 0; |
| 1500 | } |
| 1501 | if (!v->ttmbf && coded_inter) |
| 1502 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); |
| 1503 | for (i = 0; i < 6; i++) { |
| 1504 | dst_idx += i >> 2; |
| 1505 | off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); |
| 1506 | s->mb_intra = is_intra[i]; |
| 1507 | if (is_intra[i]) { |
| 1508 | /* check if prediction blocks A and C are available */ |
| 1509 | v->a_avail = v->c_avail = 0; |
| 1510 | if (i == 2 || i == 3 || !s->first_slice_line) |
| 1511 | v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; |
| 1512 | if (i == 1 || i == 3 || s->mb_x) |
| 1513 | v->c_avail = v->mb_type[0][s->block_index[i] - 1]; |
| 1514 | |
| 1515 | vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, |
| 1516 | (i & 4) ? v->codingset2 : v->codingset); |
| 1517 | if ((i>3) && (s->flags & CODEC_FLAG_GRAY)) |
| 1518 | continue; |
| 1519 | v->vc1dsp.vc1_inv_trans_8x8(s->block[i]); |
| 1520 | if (v->rangeredfrm) |
| 1521 | for (j = 0; j < 64; j++) |
| 1522 | s->block[i][j] <<= 1; |
| 1523 | s->idsp.put_signed_pixels_clamped(s->block[i], |
| 1524 | s->dest[dst_idx] + off, |
| 1525 | (i & 4) ? s->uvlinesize |
| 1526 | : s->linesize); |
| 1527 | if (v->pq >= 9 && v->overlap) { |
| 1528 | if (v->c_avail) |
| 1529 | v->vc1dsp.vc1_h_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize); |
| 1530 | if (v->a_avail) |
| 1531 | v->vc1dsp.vc1_v_overlap(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize); |
| 1532 | } |
| 1533 | block_cbp |= 0xF << (i << 2); |
| 1534 | block_intra |= 1 << i; |
| 1535 | } else if (is_coded[i]) { |
| 1536 | pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, |
| 1537 | first_block, s->dest[dst_idx] + off, |
| 1538 | (i & 4) ? s->uvlinesize : s->linesize, |
| 1539 | (i & 4) && (s->flags & CODEC_FLAG_GRAY), |
| 1540 | &block_tt); |
| 1541 | block_cbp |= pat << (i << 2); |
| 1542 | if (!v->ttmbf && ttmb < 8) |
| 1543 | ttmb = -1; |
| 1544 | first_block = 0; |
| 1545 | } |
| 1546 | } |
| 1547 | } else { // skipped MB |
| 1548 | s->mb_intra = 0; |
| 1549 | s->current_picture.qscale_table[mb_pos] = 0; |
| 1550 | for (i = 0; i < 6; i++) { |
| 1551 | v->mb_type[0][s->block_index[i]] = 0; |
| 1552 | s->dc_val[0][s->block_index[i]] = 0; |
| 1553 | } |
| 1554 | for (i = 0; i < 4; i++) { |
| 1555 | ff_vc1_pred_mv(v, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0], 0, 0); |
| 1556 | ff_vc1_mc_4mv_luma(v, i, 0, 0); |
| 1557 | } |
| 1558 | ff_vc1_mc_4mv_chroma(v, 0); |
| 1559 | s->current_picture.qscale_table[mb_pos] = 0; |
| 1560 | } |
| 1561 | } |
| 1562 | end: |
| 1563 | v->cbp[s->mb_x] = block_cbp; |
| 1564 | v->ttblk[s->mb_x] = block_tt; |
| 1565 | v->is_intra[s->mb_x] = block_intra; |
| 1566 | |
| 1567 | return 0; |
| 1568 | } |
| 1569 | |
| 1570 | /* Decode one macroblock in an interlaced frame p picture */ |
| 1571 | |
| 1572 | static int vc1_decode_p_mb_intfr(VC1Context *v) |
| 1573 | { |
| 1574 | MpegEncContext *s = &v->s; |
| 1575 | GetBitContext *gb = &s->gb; |
| 1576 | int i; |
| 1577 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; |
| 1578 | int cbp = 0; /* cbp decoding stuff */ |
| 1579 | int mqdiff, mquant; /* MB quantization */ |
| 1580 | int ttmb = v->ttfrm; /* MB Transform type */ |
| 1581 | |
| 1582 | int mb_has_coeffs = 1; /* last_flag */ |
| 1583 | int dmv_x, dmv_y; /* Differential MV components */ |
| 1584 | int val; /* temp value */ |
| 1585 | int first_block = 1; |
| 1586 | int dst_idx, off; |
| 1587 | int skipped, fourmv = 0, twomv = 0; |
| 1588 | int block_cbp = 0, pat, block_tt = 0; |
| 1589 | int idx_mbmode = 0, mvbp; |
| 1590 | int stride_y, fieldtx; |
| 1591 | |
| 1592 | mquant = v->pq; /* Lossy initialization */ |
| 1593 | |
| 1594 | if (v->skip_is_raw) |
| 1595 | skipped = get_bits1(gb); |
| 1596 | else |
| 1597 | skipped = v->s.mbskip_table[mb_pos]; |
| 1598 | if (!skipped) { |
| 1599 | if (v->fourmvswitch) |
| 1600 | idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_4MV_MBMODE_VLC_BITS, 2); // try getting this done |
| 1601 | else |
| 1602 | idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2); // in a single line |
| 1603 | switch (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0]) { |
| 1604 | /* store the motion vector type in a flag (useful later) */ |
| 1605 | case MV_PMODE_INTFR_4MV: |
| 1606 | fourmv = 1; |
| 1607 | v->blk_mv_type[s->block_index[0]] = 0; |
| 1608 | v->blk_mv_type[s->block_index[1]] = 0; |
| 1609 | v->blk_mv_type[s->block_index[2]] = 0; |
| 1610 | v->blk_mv_type[s->block_index[3]] = 0; |
| 1611 | break; |
| 1612 | case MV_PMODE_INTFR_4MV_FIELD: |
| 1613 | fourmv = 1; |
| 1614 | v->blk_mv_type[s->block_index[0]] = 1; |
| 1615 | v->blk_mv_type[s->block_index[1]] = 1; |
| 1616 | v->blk_mv_type[s->block_index[2]] = 1; |
| 1617 | v->blk_mv_type[s->block_index[3]] = 1; |
| 1618 | break; |
| 1619 | case MV_PMODE_INTFR_2MV_FIELD: |
| 1620 | twomv = 1; |
| 1621 | v->blk_mv_type[s->block_index[0]] = 1; |
| 1622 | v->blk_mv_type[s->block_index[1]] = 1; |
| 1623 | v->blk_mv_type[s->block_index[2]] = 1; |
| 1624 | v->blk_mv_type[s->block_index[3]] = 1; |
| 1625 | break; |
| 1626 | case MV_PMODE_INTFR_1MV: |
| 1627 | v->blk_mv_type[s->block_index[0]] = 0; |
| 1628 | v->blk_mv_type[s->block_index[1]] = 0; |
| 1629 | v->blk_mv_type[s->block_index[2]] = 0; |
| 1630 | v->blk_mv_type[s->block_index[3]] = 0; |
| 1631 | break; |
| 1632 | } |
| 1633 | if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB |
| 1634 | for (i = 0; i < 4; i++) { |
| 1635 | s->current_picture.motion_val[1][s->block_index[i]][0] = 0; |
| 1636 | s->current_picture.motion_val[1][s->block_index[i]][1] = 0; |
| 1637 | } |
| 1638 | v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1. |
| 1639 | s->mb_intra = 1; |
| 1640 | s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA; |
| 1641 | fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb); |
| 1642 | mb_has_coeffs = get_bits1(gb); |
| 1643 | if (mb_has_coeffs) |
| 1644 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); |
| 1645 | v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb); |
| 1646 | GET_MQUANT(); |
| 1647 | s->current_picture.qscale_table[mb_pos] = mquant; |
| 1648 | /* Set DC scale - y and c use the same (not sure if necessary here) */ |
| 1649 | s->y_dc_scale = s->y_dc_scale_table[mquant]; |
| 1650 | s->c_dc_scale = s->c_dc_scale_table[mquant]; |
| 1651 | dst_idx = 0; |
| 1652 | for (i = 0; i < 6; i++) { |
| 1653 | v->a_avail = v->c_avail = 0; |
| 1654 | v->mb_type[0][s->block_index[i]] = 1; |
| 1655 | s->dc_val[0][s->block_index[i]] = 0; |
| 1656 | dst_idx += i >> 2; |
| 1657 | val = ((cbp >> (5 - i)) & 1); |
| 1658 | if (i == 2 || i == 3 || !s->first_slice_line) |
| 1659 | v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; |
| 1660 | if (i == 1 || i == 3 || s->mb_x) |
| 1661 | v->c_avail = v->mb_type[0][s->block_index[i] - 1]; |
| 1662 | |
| 1663 | vc1_decode_intra_block(v, s->block[i], i, val, mquant, |
| 1664 | (i & 4) ? v->codingset2 : v->codingset); |
| 1665 | if ((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue; |
| 1666 | v->vc1dsp.vc1_inv_trans_8x8(s->block[i]); |
| 1667 | if (i < 4) { |
| 1668 | stride_y = s->linesize << fieldtx; |
| 1669 | off = (fieldtx) ? ((i & 1) * 8) + ((i & 2) >> 1) * s->linesize : (i & 1) * 8 + 4 * (i & 2) * s->linesize; |
| 1670 | } else { |
| 1671 | stride_y = s->uvlinesize; |
| 1672 | off = 0; |
| 1673 | } |
| 1674 | s->idsp.put_signed_pixels_clamped(s->block[i], |
| 1675 | s->dest[dst_idx] + off, |
| 1676 | stride_y); |
| 1677 | //TODO: loop filter |
| 1678 | } |
| 1679 | |
| 1680 | } else { // inter MB |
| 1681 | mb_has_coeffs = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][3]; |
| 1682 | if (mb_has_coeffs) |
| 1683 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); |
| 1684 | if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) { |
| 1685 | v->twomvbp = get_vlc2(gb, v->twomvbp_vlc->table, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1); |
| 1686 | } else { |
| 1687 | if ((ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV) |
| 1688 | || (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV_FIELD)) { |
| 1689 | v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1); |
| 1690 | } |
| 1691 | } |
| 1692 | s->mb_intra = v->is_intra[s->mb_x] = 0; |
| 1693 | for (i = 0; i < 6; i++) |
| 1694 | v->mb_type[0][s->block_index[i]] = 0; |
| 1695 | fieldtx = v->fieldtx_plane[mb_pos] = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][1]; |
| 1696 | /* for all motion vector read MVDATA and motion compensate each block */ |
| 1697 | dst_idx = 0; |
| 1698 | if (fourmv) { |
| 1699 | mvbp = v->fourmvbp; |
| 1700 | for (i = 0; i < 6; i++) { |
| 1701 | if (i < 4) { |
| 1702 | dmv_x = dmv_y = 0; |
| 1703 | val = ((mvbp >> (3 - i)) & 1); |
| 1704 | if (val) { |
| 1705 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); |
| 1706 | } |
| 1707 | ff_vc1_pred_mv_intfr(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], 0); |
| 1708 | ff_vc1_mc_4mv_luma(v, i, 0, 0); |
| 1709 | } else if (i == 4) { |
| 1710 | ff_vc1_mc_4mv_chroma4(v, 0, 0, 0); |
| 1711 | } |
| 1712 | } |
| 1713 | } else if (twomv) { |
| 1714 | mvbp = v->twomvbp; |
| 1715 | dmv_x = dmv_y = 0; |
| 1716 | if (mvbp & 2) { |
| 1717 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); |
| 1718 | } |
| 1719 | ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], 0); |
| 1720 | ff_vc1_mc_4mv_luma(v, 0, 0, 0); |
| 1721 | ff_vc1_mc_4mv_luma(v, 1, 0, 0); |
| 1722 | dmv_x = dmv_y = 0; |
| 1723 | if (mvbp & 1) { |
| 1724 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); |
| 1725 | } |
| 1726 | ff_vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], 0); |
| 1727 | ff_vc1_mc_4mv_luma(v, 2, 0, 0); |
| 1728 | ff_vc1_mc_4mv_luma(v, 3, 0, 0); |
| 1729 | ff_vc1_mc_4mv_chroma4(v, 0, 0, 0); |
| 1730 | } else { |
| 1731 | mvbp = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][2]; |
| 1732 | dmv_x = dmv_y = 0; |
| 1733 | if (mvbp) { |
| 1734 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); |
| 1735 | } |
| 1736 | ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 0); |
| 1737 | ff_vc1_mc_1mv(v, 0); |
| 1738 | } |
| 1739 | if (cbp) |
| 1740 | GET_MQUANT(); // p. 227 |
| 1741 | s->current_picture.qscale_table[mb_pos] = mquant; |
| 1742 | if (!v->ttmbf && cbp) |
| 1743 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); |
| 1744 | for (i = 0; i < 6; i++) { |
| 1745 | s->dc_val[0][s->block_index[i]] = 0; |
| 1746 | dst_idx += i >> 2; |
| 1747 | val = ((cbp >> (5 - i)) & 1); |
| 1748 | if (!fieldtx) |
| 1749 | off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); |
| 1750 | else |
| 1751 | off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * s->linesize)); |
| 1752 | if (val) { |
| 1753 | pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, |
| 1754 | first_block, s->dest[dst_idx] + off, |
| 1755 | (i & 4) ? s->uvlinesize : (s->linesize << fieldtx), |
| 1756 | (i & 4) && (s->flags & CODEC_FLAG_GRAY), &block_tt); |
| 1757 | block_cbp |= pat << (i << 2); |
| 1758 | if (!v->ttmbf && ttmb < 8) |
| 1759 | ttmb = -1; |
| 1760 | first_block = 0; |
| 1761 | } |
| 1762 | } |
| 1763 | } |
| 1764 | } else { // skipped |
| 1765 | s->mb_intra = v->is_intra[s->mb_x] = 0; |
| 1766 | for (i = 0; i < 6; i++) { |
| 1767 | v->mb_type[0][s->block_index[i]] = 0; |
| 1768 | s->dc_val[0][s->block_index[i]] = 0; |
| 1769 | } |
| 1770 | s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP; |
| 1771 | s->current_picture.qscale_table[mb_pos] = 0; |
| 1772 | v->blk_mv_type[s->block_index[0]] = 0; |
| 1773 | v->blk_mv_type[s->block_index[1]] = 0; |
| 1774 | v->blk_mv_type[s->block_index[2]] = 0; |
| 1775 | v->blk_mv_type[s->block_index[3]] = 0; |
| 1776 | ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0); |
| 1777 | ff_vc1_mc_1mv(v, 0); |
| 1778 | } |
| 1779 | if (s->mb_x == s->mb_width - 1) |
| 1780 | memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0])*s->mb_stride); |
| 1781 | return 0; |
| 1782 | } |
| 1783 | |
| 1784 | static int vc1_decode_p_mb_intfi(VC1Context *v) |
| 1785 | { |
| 1786 | MpegEncContext *s = &v->s; |
| 1787 | GetBitContext *gb = &s->gb; |
| 1788 | int i; |
| 1789 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; |
| 1790 | int cbp = 0; /* cbp decoding stuff */ |
| 1791 | int mqdiff, mquant; /* MB quantization */ |
| 1792 | int ttmb = v->ttfrm; /* MB Transform type */ |
| 1793 | |
| 1794 | int mb_has_coeffs = 1; /* last_flag */ |
| 1795 | int dmv_x, dmv_y; /* Differential MV components */ |
| 1796 | int val; /* temp values */ |
| 1797 | int first_block = 1; |
| 1798 | int dst_idx, off; |
| 1799 | int pred_flag = 0; |
| 1800 | int block_cbp = 0, pat, block_tt = 0; |
| 1801 | int idx_mbmode = 0; |
| 1802 | |
| 1803 | mquant = v->pq; /* Lossy initialization */ |
| 1804 | |
| 1805 | idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_IF_MBMODE_VLC_BITS, 2); |
| 1806 | if (idx_mbmode <= 1) { // intra MB |
| 1807 | v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1. |
| 1808 | s->mb_intra = 1; |
| 1809 | s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0; |
| 1810 | s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0; |
| 1811 | s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA; |
| 1812 | GET_MQUANT(); |
| 1813 | s->current_picture.qscale_table[mb_pos] = mquant; |
| 1814 | /* Set DC scale - y and c use the same (not sure if necessary here) */ |
| 1815 | s->y_dc_scale = s->y_dc_scale_table[mquant]; |
| 1816 | s->c_dc_scale = s->c_dc_scale_table[mquant]; |
| 1817 | v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb); |
| 1818 | mb_has_coeffs = idx_mbmode & 1; |
| 1819 | if (mb_has_coeffs) |
| 1820 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_ICBPCY_VLC_BITS, 2); |
| 1821 | dst_idx = 0; |
| 1822 | for (i = 0; i < 6; i++) { |
| 1823 | v->a_avail = v->c_avail = 0; |
| 1824 | v->mb_type[0][s->block_index[i]] = 1; |
| 1825 | s->dc_val[0][s->block_index[i]] = 0; |
| 1826 | dst_idx += i >> 2; |
| 1827 | val = ((cbp >> (5 - i)) & 1); |
| 1828 | if (i == 2 || i == 3 || !s->first_slice_line) |
| 1829 | v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; |
| 1830 | if (i == 1 || i == 3 || s->mb_x) |
| 1831 | v->c_avail = v->mb_type[0][s->block_index[i] - 1]; |
| 1832 | |
| 1833 | vc1_decode_intra_block(v, s->block[i], i, val, mquant, |
| 1834 | (i & 4) ? v->codingset2 : v->codingset); |
| 1835 | if ((i>3) && (s->flags & CODEC_FLAG_GRAY)) |
| 1836 | continue; |
| 1837 | v->vc1dsp.vc1_inv_trans_8x8(s->block[i]); |
| 1838 | off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); |
| 1839 | s->idsp.put_signed_pixels_clamped(s->block[i], |
| 1840 | s->dest[dst_idx] + off, |
| 1841 | (i & 4) ? s->uvlinesize |
| 1842 | : s->linesize); |
| 1843 | // TODO: loop filter |
| 1844 | } |
| 1845 | } else { |
| 1846 | s->mb_intra = v->is_intra[s->mb_x] = 0; |
| 1847 | s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_16x16; |
| 1848 | for (i = 0; i < 6; i++) v->mb_type[0][s->block_index[i]] = 0; |
| 1849 | if (idx_mbmode <= 5) { // 1-MV |
| 1850 | dmv_x = dmv_y = pred_flag = 0; |
| 1851 | if (idx_mbmode & 1) { |
| 1852 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag); |
| 1853 | } |
| 1854 | ff_vc1_pred_mv(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], pred_flag, 0); |
| 1855 | ff_vc1_mc_1mv(v, 0); |
| 1856 | mb_has_coeffs = !(idx_mbmode & 2); |
| 1857 | } else { // 4-MV |
| 1858 | v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1); |
| 1859 | for (i = 0; i < 6; i++) { |
| 1860 | if (i < 4) { |
| 1861 | dmv_x = dmv_y = pred_flag = 0; |
| 1862 | val = ((v->fourmvbp >> (3 - i)) & 1); |
| 1863 | if (val) { |
| 1864 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, &pred_flag); |
| 1865 | } |
| 1866 | ff_vc1_pred_mv(v, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0], pred_flag, 0); |
| 1867 | ff_vc1_mc_4mv_luma(v, i, 0, 0); |
| 1868 | } else if (i == 4) |
| 1869 | ff_vc1_mc_4mv_chroma(v, 0); |
| 1870 | } |
| 1871 | mb_has_coeffs = idx_mbmode & 1; |
| 1872 | } |
| 1873 | if (mb_has_coeffs) |
| 1874 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); |
| 1875 | if (cbp) { |
| 1876 | GET_MQUANT(); |
| 1877 | } |
| 1878 | s->current_picture.qscale_table[mb_pos] = mquant; |
| 1879 | if (!v->ttmbf && cbp) { |
| 1880 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); |
| 1881 | } |
| 1882 | dst_idx = 0; |
| 1883 | for (i = 0; i < 6; i++) { |
| 1884 | s->dc_val[0][s->block_index[i]] = 0; |
| 1885 | dst_idx += i >> 2; |
| 1886 | val = ((cbp >> (5 - i)) & 1); |
| 1887 | off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize; |
| 1888 | if (val) { |
| 1889 | pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, |
| 1890 | first_block, s->dest[dst_idx] + off, |
| 1891 | (i & 4) ? s->uvlinesize : s->linesize, |
| 1892 | (i & 4) && (s->flags & CODEC_FLAG_GRAY), |
| 1893 | &block_tt); |
| 1894 | block_cbp |= pat << (i << 2); |
| 1895 | if (!v->ttmbf && ttmb < 8) ttmb = -1; |
| 1896 | first_block = 0; |
| 1897 | } |
| 1898 | } |
| 1899 | } |
| 1900 | if (s->mb_x == s->mb_width - 1) |
| 1901 | memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0]) * s->mb_stride); |
| 1902 | return 0; |
| 1903 | } |
| 1904 | |
| 1905 | /** Decode one B-frame MB (in Main profile) |
| 1906 | */ |
| 1907 | static void vc1_decode_b_mb(VC1Context *v) |
| 1908 | { |
| 1909 | MpegEncContext *s = &v->s; |
| 1910 | GetBitContext *gb = &s->gb; |
| 1911 | int i, j; |
| 1912 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; |
| 1913 | int cbp = 0; /* cbp decoding stuff */ |
| 1914 | int mqdiff, mquant; /* MB quantization */ |
| 1915 | int ttmb = v->ttfrm; /* MB Transform type */ |
| 1916 | int mb_has_coeffs = 0; /* last_flag */ |
| 1917 | int index, index1; /* LUT indexes */ |
| 1918 | int val, sign; /* temp values */ |
| 1919 | int first_block = 1; |
| 1920 | int dst_idx, off; |
| 1921 | int skipped, direct; |
| 1922 | int dmv_x[2], dmv_y[2]; |
| 1923 | int bmvtype = BMV_TYPE_BACKWARD; |
| 1924 | |
| 1925 | mquant = v->pq; /* lossy initialization */ |
| 1926 | s->mb_intra = 0; |
| 1927 | |
| 1928 | if (v->dmb_is_raw) |
| 1929 | direct = get_bits1(gb); |
| 1930 | else |
| 1931 | direct = v->direct_mb_plane[mb_pos]; |
| 1932 | if (v->skip_is_raw) |
| 1933 | skipped = get_bits1(gb); |
| 1934 | else |
| 1935 | skipped = v->s.mbskip_table[mb_pos]; |
| 1936 | |
| 1937 | dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0; |
| 1938 | for (i = 0; i < 6; i++) { |
| 1939 | v->mb_type[0][s->block_index[i]] = 0; |
| 1940 | s->dc_val[0][s->block_index[i]] = 0; |
| 1941 | } |
| 1942 | s->current_picture.qscale_table[mb_pos] = 0; |
| 1943 | |
| 1944 | if (!direct) { |
| 1945 | if (!skipped) { |
| 1946 | GET_MVDATA(dmv_x[0], dmv_y[0]); |
| 1947 | dmv_x[1] = dmv_x[0]; |
| 1948 | dmv_y[1] = dmv_y[0]; |
| 1949 | } |
| 1950 | if (skipped || !s->mb_intra) { |
| 1951 | bmvtype = decode012(gb); |
| 1952 | switch (bmvtype) { |
| 1953 | case 0: |
| 1954 | bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD; |
| 1955 | break; |
| 1956 | case 1: |
| 1957 | bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD; |
| 1958 | break; |
| 1959 | case 2: |
| 1960 | bmvtype = BMV_TYPE_INTERPOLATED; |
| 1961 | dmv_x[0] = dmv_y[0] = 0; |
| 1962 | } |
| 1963 | } |
| 1964 | } |
| 1965 | for (i = 0; i < 6; i++) |
| 1966 | v->mb_type[0][s->block_index[i]] = s->mb_intra; |
| 1967 | |
| 1968 | if (skipped) { |
| 1969 | if (direct) |
| 1970 | bmvtype = BMV_TYPE_INTERPOLATED; |
| 1971 | ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); |
| 1972 | vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); |
| 1973 | return; |
| 1974 | } |
| 1975 | if (direct) { |
| 1976 | cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); |
| 1977 | GET_MQUANT(); |
| 1978 | s->mb_intra = 0; |
| 1979 | s->current_picture.qscale_table[mb_pos] = mquant; |
| 1980 | if (!v->ttmbf) |
| 1981 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); |
| 1982 | dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0; |
| 1983 | ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); |
| 1984 | vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); |
| 1985 | } else { |
| 1986 | if (!mb_has_coeffs && !s->mb_intra) { |
| 1987 | /* no coded blocks - effectively skipped */ |
| 1988 | ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); |
| 1989 | vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); |
| 1990 | return; |
| 1991 | } |
| 1992 | if (s->mb_intra && !mb_has_coeffs) { |
| 1993 | GET_MQUANT(); |
| 1994 | s->current_picture.qscale_table[mb_pos] = mquant; |
| 1995 | s->ac_pred = get_bits1(gb); |
| 1996 | cbp = 0; |
| 1997 | ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); |
| 1998 | } else { |
| 1999 | if (bmvtype == BMV_TYPE_INTERPOLATED) { |
| 2000 | GET_MVDATA(dmv_x[0], dmv_y[0]); |
| 2001 | if (!mb_has_coeffs) { |
| 2002 | /* interpolated skipped block */ |
| 2003 | ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); |
| 2004 | vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); |
| 2005 | return; |
| 2006 | } |
| 2007 | } |
| 2008 | ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); |
| 2009 | if (!s->mb_intra) { |
| 2010 | vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); |
| 2011 | } |
| 2012 | if (s->mb_intra) |
| 2013 | s->ac_pred = get_bits1(gb); |
| 2014 | cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); |
| 2015 | GET_MQUANT(); |
| 2016 | s->current_picture.qscale_table[mb_pos] = mquant; |
| 2017 | if (!v->ttmbf && !s->mb_intra && mb_has_coeffs) |
| 2018 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); |
| 2019 | } |
| 2020 | } |
| 2021 | dst_idx = 0; |
| 2022 | for (i = 0; i < 6; i++) { |
| 2023 | s->dc_val[0][s->block_index[i]] = 0; |
| 2024 | dst_idx += i >> 2; |
| 2025 | val = ((cbp >> (5 - i)) & 1); |
| 2026 | off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); |
| 2027 | v->mb_type[0][s->block_index[i]] = s->mb_intra; |
| 2028 | if (s->mb_intra) { |
| 2029 | /* check if prediction blocks A and C are available */ |
| 2030 | v->a_avail = v->c_avail = 0; |
| 2031 | if (i == 2 || i == 3 || !s->first_slice_line) |
| 2032 | v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; |
| 2033 | if (i == 1 || i == 3 || s->mb_x) |
| 2034 | v->c_avail = v->mb_type[0][s->block_index[i] - 1]; |
| 2035 | |
| 2036 | vc1_decode_intra_block(v, s->block[i], i, val, mquant, |
| 2037 | (i & 4) ? v->codingset2 : v->codingset); |
| 2038 | if ((i>3) && (s->flags & CODEC_FLAG_GRAY)) |
| 2039 | continue; |
| 2040 | v->vc1dsp.vc1_inv_trans_8x8(s->block[i]); |
| 2041 | if (v->rangeredfrm) |
| 2042 | for (j = 0; j < 64; j++) |
| 2043 | s->block[i][j] <<= 1; |
| 2044 | s->idsp.put_signed_pixels_clamped(s->block[i], |
| 2045 | s->dest[dst_idx] + off, |
| 2046 | i & 4 ? s->uvlinesize |
| 2047 | : s->linesize); |
| 2048 | } else if (val) { |
| 2049 | vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, |
| 2050 | first_block, s->dest[dst_idx] + off, |
| 2051 | (i & 4) ? s->uvlinesize : s->linesize, |
| 2052 | (i & 4) && (s->flags & CODEC_FLAG_GRAY), NULL); |
| 2053 | if (!v->ttmbf && ttmb < 8) |
| 2054 | ttmb = -1; |
| 2055 | first_block = 0; |
| 2056 | } |
| 2057 | } |
| 2058 | } |
| 2059 | |
| 2060 | /** Decode one B-frame MB (in interlaced field B picture) |
| 2061 | */ |
| 2062 | static void vc1_decode_b_mb_intfi(VC1Context *v) |
| 2063 | { |
| 2064 | MpegEncContext *s = &v->s; |
| 2065 | GetBitContext *gb = &s->gb; |
| 2066 | int i, j; |
| 2067 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; |
| 2068 | int cbp = 0; /* cbp decoding stuff */ |
| 2069 | int mqdiff, mquant; /* MB quantization */ |
| 2070 | int ttmb = v->ttfrm; /* MB Transform type */ |
| 2071 | int mb_has_coeffs = 0; /* last_flag */ |
| 2072 | int val; /* temp value */ |
| 2073 | int first_block = 1; |
| 2074 | int dst_idx, off; |
| 2075 | int fwd; |
| 2076 | int dmv_x[2], dmv_y[2], pred_flag[2]; |
| 2077 | int bmvtype = BMV_TYPE_BACKWARD; |
| 2078 | int idx_mbmode; |
| 2079 | |
| 2080 | mquant = v->pq; /* Lossy initialization */ |
| 2081 | s->mb_intra = 0; |
| 2082 | |
| 2083 | idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_IF_MBMODE_VLC_BITS, 2); |
| 2084 | if (idx_mbmode <= 1) { // intra MB |
| 2085 | v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1. |
| 2086 | s->mb_intra = 1; |
| 2087 | s->current_picture.motion_val[1][s->block_index[0]][0] = 0; |
| 2088 | s->current_picture.motion_val[1][s->block_index[0]][1] = 0; |
| 2089 | s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA; |
| 2090 | GET_MQUANT(); |
| 2091 | s->current_picture.qscale_table[mb_pos] = mquant; |
| 2092 | /* Set DC scale - y and c use the same (not sure if necessary here) */ |
| 2093 | s->y_dc_scale = s->y_dc_scale_table[mquant]; |
| 2094 | s->c_dc_scale = s->c_dc_scale_table[mquant]; |
| 2095 | v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb); |
| 2096 | mb_has_coeffs = idx_mbmode & 1; |
| 2097 | if (mb_has_coeffs) |
| 2098 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_ICBPCY_VLC_BITS, 2); |
| 2099 | dst_idx = 0; |
| 2100 | for (i = 0; i < 6; i++) { |
| 2101 | v->a_avail = v->c_avail = 0; |
| 2102 | v->mb_type[0][s->block_index[i]] = 1; |
| 2103 | s->dc_val[0][s->block_index[i]] = 0; |
| 2104 | dst_idx += i >> 2; |
| 2105 | val = ((cbp >> (5 - i)) & 1); |
| 2106 | if (i == 2 || i == 3 || !s->first_slice_line) |
| 2107 | v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; |
| 2108 | if (i == 1 || i == 3 || s->mb_x) |
| 2109 | v->c_avail = v->mb_type[0][s->block_index[i] - 1]; |
| 2110 | |
| 2111 | vc1_decode_intra_block(v, s->block[i], i, val, mquant, |
| 2112 | (i & 4) ? v->codingset2 : v->codingset); |
| 2113 | if ((i>3) && (s->flags & CODEC_FLAG_GRAY)) |
| 2114 | continue; |
| 2115 | v->vc1dsp.vc1_inv_trans_8x8(s->block[i]); |
| 2116 | if (v->rangeredfrm) |
| 2117 | for (j = 0; j < 64; j++) |
| 2118 | s->block[i][j] <<= 1; |
| 2119 | off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); |
| 2120 | s->idsp.put_signed_pixels_clamped(s->block[i], |
| 2121 | s->dest[dst_idx] + off, |
| 2122 | (i & 4) ? s->uvlinesize |
| 2123 | : s->linesize); |
| 2124 | // TODO: yet to perform loop filter |
| 2125 | } |
| 2126 | } else { |
| 2127 | s->mb_intra = v->is_intra[s->mb_x] = 0; |
| 2128 | s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_16x16; |
| 2129 | for (i = 0; i < 6; i++) v->mb_type[0][s->block_index[i]] = 0; |
| 2130 | if (v->fmb_is_raw) |
| 2131 | fwd = v->forward_mb_plane[mb_pos] = get_bits1(gb); |
| 2132 | else |
| 2133 | fwd = v->forward_mb_plane[mb_pos]; |
| 2134 | if (idx_mbmode <= 5) { // 1-MV |
| 2135 | int interpmvp = 0; |
| 2136 | dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0; |
| 2137 | pred_flag[0] = pred_flag[1] = 0; |
| 2138 | if (fwd) |
| 2139 | bmvtype = BMV_TYPE_FORWARD; |
| 2140 | else { |
| 2141 | bmvtype = decode012(gb); |
| 2142 | switch (bmvtype) { |
| 2143 | case 0: |
| 2144 | bmvtype = BMV_TYPE_BACKWARD; |
| 2145 | break; |
| 2146 | case 1: |
| 2147 | bmvtype = BMV_TYPE_DIRECT; |
| 2148 | break; |
| 2149 | case 2: |
| 2150 | bmvtype = BMV_TYPE_INTERPOLATED; |
| 2151 | interpmvp = get_bits1(gb); |
| 2152 | } |
| 2153 | } |
| 2154 | v->bmvtype = bmvtype; |
| 2155 | if (bmvtype != BMV_TYPE_DIRECT && idx_mbmode & 1) { |
| 2156 | get_mvdata_interlaced(v, &dmv_x[bmvtype == BMV_TYPE_BACKWARD], &dmv_y[bmvtype == BMV_TYPE_BACKWARD], &pred_flag[bmvtype == BMV_TYPE_BACKWARD]); |
| 2157 | } |
| 2158 | if (interpmvp) { |
| 2159 | get_mvdata_interlaced(v, &dmv_x[1], &dmv_y[1], &pred_flag[1]); |
| 2160 | } |
| 2161 | if (bmvtype == BMV_TYPE_DIRECT) { |
| 2162 | dmv_x[0] = dmv_y[0] = pred_flag[0] = 0; |
| 2163 | dmv_x[1] = dmv_y[1] = pred_flag[0] = 0; |
| 2164 | if (!s->next_picture_ptr->field_picture) { |
| 2165 | av_log(s->avctx, AV_LOG_ERROR, "Mixed field/frame direct mode not supported\n"); |
| 2166 | return; |
| 2167 | } |
| 2168 | } |
| 2169 | ff_vc1_pred_b_mv_intfi(v, 0, dmv_x, dmv_y, 1, pred_flag); |
| 2170 | vc1_b_mc(v, dmv_x, dmv_y, (bmvtype == BMV_TYPE_DIRECT), bmvtype); |
| 2171 | mb_has_coeffs = !(idx_mbmode & 2); |
| 2172 | } else { // 4-MV |
| 2173 | if (fwd) |
| 2174 | bmvtype = BMV_TYPE_FORWARD; |
| 2175 | v->bmvtype = bmvtype; |
| 2176 | v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1); |
| 2177 | for (i = 0; i < 6; i++) { |
| 2178 | if (i < 4) { |
| 2179 | dmv_x[0] = dmv_y[0] = pred_flag[0] = 0; |
| 2180 | dmv_x[1] = dmv_y[1] = pred_flag[1] = 0; |
| 2181 | val = ((v->fourmvbp >> (3 - i)) & 1); |
| 2182 | if (val) { |
| 2183 | get_mvdata_interlaced(v, &dmv_x[bmvtype == BMV_TYPE_BACKWARD], |
| 2184 | &dmv_y[bmvtype == BMV_TYPE_BACKWARD], |
| 2185 | &pred_flag[bmvtype == BMV_TYPE_BACKWARD]); |
| 2186 | } |
| 2187 | ff_vc1_pred_b_mv_intfi(v, i, dmv_x, dmv_y, 0, pred_flag); |
| 2188 | ff_vc1_mc_4mv_luma(v, i, bmvtype == BMV_TYPE_BACKWARD, 0); |
| 2189 | } else if (i == 4) |
| 2190 | ff_vc1_mc_4mv_chroma(v, bmvtype == BMV_TYPE_BACKWARD); |
| 2191 | } |
| 2192 | mb_has_coeffs = idx_mbmode & 1; |
| 2193 | } |
| 2194 | if (mb_has_coeffs) |
| 2195 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); |
| 2196 | if (cbp) { |
| 2197 | GET_MQUANT(); |
| 2198 | } |
| 2199 | s->current_picture.qscale_table[mb_pos] = mquant; |
| 2200 | if (!v->ttmbf && cbp) { |
| 2201 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); |
| 2202 | } |
| 2203 | dst_idx = 0; |
| 2204 | for (i = 0; i < 6; i++) { |
| 2205 | s->dc_val[0][s->block_index[i]] = 0; |
| 2206 | dst_idx += i >> 2; |
| 2207 | val = ((cbp >> (5 - i)) & 1); |
| 2208 | off = (i & 4) ? 0 : (i & 1) * 8 + (i & 2) * 4 * s->linesize; |
| 2209 | if (val) { |
| 2210 | vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, |
| 2211 | first_block, s->dest[dst_idx] + off, |
| 2212 | (i & 4) ? s->uvlinesize : s->linesize, |
| 2213 | (i & 4) && (s->flags & CODEC_FLAG_GRAY), NULL); |
| 2214 | if (!v->ttmbf && ttmb < 8) |
| 2215 | ttmb = -1; |
| 2216 | first_block = 0; |
| 2217 | } |
| 2218 | } |
| 2219 | } |
| 2220 | } |
| 2221 | |
| 2222 | /** Decode one B-frame MB (in interlaced frame B picture) |
| 2223 | */ |
| 2224 | static int vc1_decode_b_mb_intfr(VC1Context *v) |
| 2225 | { |
| 2226 | MpegEncContext *s = &v->s; |
| 2227 | GetBitContext *gb = &s->gb; |
| 2228 | int i, j; |
| 2229 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; |
| 2230 | int cbp = 0; /* cbp decoding stuff */ |
| 2231 | int mqdiff, mquant; /* MB quantization */ |
| 2232 | int ttmb = v->ttfrm; /* MB Transform type */ |
| 2233 | int mvsw = 0; /* motion vector switch */ |
| 2234 | int mb_has_coeffs = 1; /* last_flag */ |
| 2235 | int dmv_x, dmv_y; /* Differential MV components */ |
| 2236 | int val; /* temp value */ |
| 2237 | int first_block = 1; |
| 2238 | int dst_idx, off; |
| 2239 | int skipped, direct, twomv = 0; |
| 2240 | int block_cbp = 0, pat, block_tt = 0; |
| 2241 | int idx_mbmode = 0, mvbp; |
| 2242 | int stride_y, fieldtx; |
| 2243 | int bmvtype = BMV_TYPE_BACKWARD; |
| 2244 | int dir, dir2; |
| 2245 | |
| 2246 | mquant = v->pq; /* Lossy initialization */ |
| 2247 | s->mb_intra = 0; |
| 2248 | if (v->skip_is_raw) |
| 2249 | skipped = get_bits1(gb); |
| 2250 | else |
| 2251 | skipped = v->s.mbskip_table[mb_pos]; |
| 2252 | |
| 2253 | if (!skipped) { |
| 2254 | idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2); |
| 2255 | if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) { |
| 2256 | twomv = 1; |
| 2257 | v->blk_mv_type[s->block_index[0]] = 1; |
| 2258 | v->blk_mv_type[s->block_index[1]] = 1; |
| 2259 | v->blk_mv_type[s->block_index[2]] = 1; |
| 2260 | v->blk_mv_type[s->block_index[3]] = 1; |
| 2261 | } else { |
| 2262 | v->blk_mv_type[s->block_index[0]] = 0; |
| 2263 | v->blk_mv_type[s->block_index[1]] = 0; |
| 2264 | v->blk_mv_type[s->block_index[2]] = 0; |
| 2265 | v->blk_mv_type[s->block_index[3]] = 0; |
| 2266 | } |
| 2267 | } |
| 2268 | |
| 2269 | if (v->dmb_is_raw) |
| 2270 | direct = get_bits1(gb); |
| 2271 | else |
| 2272 | direct = v->direct_mb_plane[mb_pos]; |
| 2273 | |
| 2274 | if (direct) { |
| 2275 | if (s->next_picture_ptr->field_picture) |
| 2276 | av_log(s->avctx, AV_LOG_WARNING, "Mixed frame/field direct mode not supported\n"); |
| 2277 | s->mv[0][0][0] = s->current_picture.motion_val[0][s->block_index[0]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][0], v->bfraction, 0, s->quarter_sample); |
| 2278 | s->mv[0][0][1] = s->current_picture.motion_val[0][s->block_index[0]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][1], v->bfraction, 0, s->quarter_sample); |
| 2279 | s->mv[1][0][0] = s->current_picture.motion_val[1][s->block_index[0]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][0], v->bfraction, 1, s->quarter_sample); |
| 2280 | s->mv[1][0][1] = s->current_picture.motion_val[1][s->block_index[0]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[0]][1], v->bfraction, 1, s->quarter_sample); |
| 2281 | |
| 2282 | if (twomv) { |
| 2283 | s->mv[0][2][0] = s->current_picture.motion_val[0][s->block_index[2]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][0], v->bfraction, 0, s->quarter_sample); |
| 2284 | s->mv[0][2][1] = s->current_picture.motion_val[0][s->block_index[2]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][1], v->bfraction, 0, s->quarter_sample); |
| 2285 | s->mv[1][2][0] = s->current_picture.motion_val[1][s->block_index[2]][0] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][0], v->bfraction, 1, s->quarter_sample); |
| 2286 | s->mv[1][2][1] = s->current_picture.motion_val[1][s->block_index[2]][1] = scale_mv(s->next_picture.motion_val[1][s->block_index[2]][1], v->bfraction, 1, s->quarter_sample); |
| 2287 | |
| 2288 | for (i = 1; i < 4; i += 2) { |
| 2289 | s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0] = s->mv[0][i-1][0]; |
| 2290 | s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1] = s->mv[0][i-1][1]; |
| 2291 | s->mv[1][i][0] = s->current_picture.motion_val[1][s->block_index[i]][0] = s->mv[1][i-1][0]; |
| 2292 | s->mv[1][i][1] = s->current_picture.motion_val[1][s->block_index[i]][1] = s->mv[1][i-1][1]; |
| 2293 | } |
| 2294 | } else { |
| 2295 | for (i = 1; i < 4; i++) { |
| 2296 | s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0] = s->mv[0][0][0]; |
| 2297 | s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1] = s->mv[0][0][1]; |
| 2298 | s->mv[1][i][0] = s->current_picture.motion_val[1][s->block_index[i]][0] = s->mv[1][0][0]; |
| 2299 | s->mv[1][i][1] = s->current_picture.motion_val[1][s->block_index[i]][1] = s->mv[1][0][1]; |
| 2300 | } |
| 2301 | } |
| 2302 | } |
| 2303 | |
| 2304 | if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_INTRA) { // intra MB |
| 2305 | for (i = 0; i < 4; i++) { |
| 2306 | s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0] = 0; |
| 2307 | s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1] = 0; |
| 2308 | s->mv[1][i][0] = s->current_picture.motion_val[1][s->block_index[i]][0] = 0; |
| 2309 | s->mv[1][i][1] = s->current_picture.motion_val[1][s->block_index[i]][1] = 0; |
| 2310 | } |
| 2311 | v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1. |
| 2312 | s->mb_intra = 1; |
| 2313 | s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA; |
| 2314 | fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb); |
| 2315 | mb_has_coeffs = get_bits1(gb); |
| 2316 | if (mb_has_coeffs) |
| 2317 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); |
| 2318 | v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb); |
| 2319 | GET_MQUANT(); |
| 2320 | s->current_picture.qscale_table[mb_pos] = mquant; |
| 2321 | /* Set DC scale - y and c use the same (not sure if necessary here) */ |
| 2322 | s->y_dc_scale = s->y_dc_scale_table[mquant]; |
| 2323 | s->c_dc_scale = s->c_dc_scale_table[mquant]; |
| 2324 | dst_idx = 0; |
| 2325 | for (i = 0; i < 6; i++) { |
| 2326 | v->a_avail = v->c_avail = 0; |
| 2327 | v->mb_type[0][s->block_index[i]] = 1; |
| 2328 | s->dc_val[0][s->block_index[i]] = 0; |
| 2329 | dst_idx += i >> 2; |
| 2330 | val = ((cbp >> (5 - i)) & 1); |
| 2331 | if (i == 2 || i == 3 || !s->first_slice_line) |
| 2332 | v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; |
| 2333 | if (i == 1 || i == 3 || s->mb_x) |
| 2334 | v->c_avail = v->mb_type[0][s->block_index[i] - 1]; |
| 2335 | |
| 2336 | vc1_decode_intra_block(v, s->block[i], i, val, mquant, |
| 2337 | (i & 4) ? v->codingset2 : v->codingset); |
| 2338 | if (i > 3 && (s->flags & CODEC_FLAG_GRAY)) |
| 2339 | continue; |
| 2340 | v->vc1dsp.vc1_inv_trans_8x8(s->block[i]); |
| 2341 | if (i < 4) { |
| 2342 | stride_y = s->linesize << fieldtx; |
| 2343 | off = (fieldtx) ? ((i & 1) * 8) + ((i & 2) >> 1) * s->linesize : (i & 1) * 8 + 4 * (i & 2) * s->linesize; |
| 2344 | } else { |
| 2345 | stride_y = s->uvlinesize; |
| 2346 | off = 0; |
| 2347 | } |
| 2348 | s->idsp.put_signed_pixels_clamped(s->block[i], |
| 2349 | s->dest[dst_idx] + off, |
| 2350 | stride_y); |
| 2351 | } |
| 2352 | } else { |
| 2353 | s->mb_intra = v->is_intra[s->mb_x] = 0; |
| 2354 | if (!direct) { |
| 2355 | if (skipped || !s->mb_intra) { |
| 2356 | bmvtype = decode012(gb); |
| 2357 | switch (bmvtype) { |
| 2358 | case 0: |
| 2359 | bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD; |
| 2360 | break; |
| 2361 | case 1: |
| 2362 | bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD; |
| 2363 | break; |
| 2364 | case 2: |
| 2365 | bmvtype = BMV_TYPE_INTERPOLATED; |
| 2366 | } |
| 2367 | } |
| 2368 | |
| 2369 | if (twomv && bmvtype != BMV_TYPE_INTERPOLATED) |
| 2370 | mvsw = get_bits1(gb); |
| 2371 | } |
| 2372 | |
| 2373 | if (!skipped) { // inter MB |
| 2374 | mb_has_coeffs = ff_vc1_mbmode_intfrp[0][idx_mbmode][3]; |
| 2375 | if (mb_has_coeffs) |
| 2376 | cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); |
| 2377 | if (!direct) { |
| 2378 | if (bmvtype == BMV_TYPE_INTERPOLATED && twomv) { |
| 2379 | v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1); |
| 2380 | } else if (bmvtype == BMV_TYPE_INTERPOLATED || twomv) { |
| 2381 | v->twomvbp = get_vlc2(gb, v->twomvbp_vlc->table, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1); |
| 2382 | } |
| 2383 | } |
| 2384 | |
| 2385 | for (i = 0; i < 6; i++) |
| 2386 | v->mb_type[0][s->block_index[i]] = 0; |
| 2387 | fieldtx = v->fieldtx_plane[mb_pos] = ff_vc1_mbmode_intfrp[0][idx_mbmode][1]; |
| 2388 | /* for all motion vector read MVDATA and motion compensate each block */ |
| 2389 | dst_idx = 0; |
| 2390 | if (direct) { |
| 2391 | if (twomv) { |
| 2392 | for (i = 0; i < 4; i++) { |
| 2393 | ff_vc1_mc_4mv_luma(v, i, 0, 0); |
| 2394 | ff_vc1_mc_4mv_luma(v, i, 1, 1); |
| 2395 | } |
| 2396 | ff_vc1_mc_4mv_chroma4(v, 0, 0, 0); |
| 2397 | ff_vc1_mc_4mv_chroma4(v, 1, 1, 1); |
| 2398 | } else { |
| 2399 | ff_vc1_mc_1mv(v, 0); |
| 2400 | ff_vc1_interp_mc(v); |
| 2401 | } |
| 2402 | } else if (twomv && bmvtype == BMV_TYPE_INTERPOLATED) { |
| 2403 | mvbp = v->fourmvbp; |
| 2404 | for (i = 0; i < 4; i++) { |
| 2405 | dir = i==1 || i==3; |
| 2406 | dmv_x = dmv_y = 0; |
| 2407 | val = ((mvbp >> (3 - i)) & 1); |
| 2408 | if (val) |
| 2409 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); |
| 2410 | j = i > 1 ? 2 : 0; |
| 2411 | ff_vc1_pred_mv_intfr(v, j, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], dir); |
| 2412 | ff_vc1_mc_4mv_luma(v, j, dir, dir); |
| 2413 | ff_vc1_mc_4mv_luma(v, j+1, dir, dir); |
| 2414 | } |
| 2415 | |
| 2416 | ff_vc1_mc_4mv_chroma4(v, 0, 0, 0); |
| 2417 | ff_vc1_mc_4mv_chroma4(v, 1, 1, 1); |
| 2418 | } else if (bmvtype == BMV_TYPE_INTERPOLATED) { |
| 2419 | mvbp = v->twomvbp; |
| 2420 | dmv_x = dmv_y = 0; |
| 2421 | if (mvbp & 2) |
| 2422 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); |
| 2423 | |
| 2424 | ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 0); |
| 2425 | ff_vc1_mc_1mv(v, 0); |
| 2426 | |
| 2427 | dmv_x = dmv_y = 0; |
| 2428 | if (mvbp & 1) |
| 2429 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); |
| 2430 | |
| 2431 | ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], 1); |
| 2432 | ff_vc1_interp_mc(v); |
| 2433 | } else if (twomv) { |
| 2434 | dir = bmvtype == BMV_TYPE_BACKWARD; |
| 2435 | dir2 = dir; |
| 2436 | if (mvsw) |
| 2437 | dir2 = !dir; |
| 2438 | mvbp = v->twomvbp; |
| 2439 | dmv_x = dmv_y = 0; |
| 2440 | if (mvbp & 2) |
| 2441 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); |
| 2442 | ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], dir); |
| 2443 | |
| 2444 | dmv_x = dmv_y = 0; |
| 2445 | if (mvbp & 1) |
| 2446 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); |
| 2447 | ff_vc1_pred_mv_intfr(v, 2, dmv_x, dmv_y, 2, v->range_x, v->range_y, v->mb_type[0], dir2); |
| 2448 | |
| 2449 | if (mvsw) { |
| 2450 | for (i = 0; i < 2; i++) { |
| 2451 | s->mv[dir][i+2][0] = s->mv[dir][i][0] = s->current_picture.motion_val[dir][s->block_index[i+2]][0] = s->current_picture.motion_val[dir][s->block_index[i]][0]; |
| 2452 | s->mv[dir][i+2][1] = s->mv[dir][i][1] = s->current_picture.motion_val[dir][s->block_index[i+2]][1] = s->current_picture.motion_val[dir][s->block_index[i]][1]; |
| 2453 | s->mv[dir2][i+2][0] = s->mv[dir2][i][0] = s->current_picture.motion_val[dir2][s->block_index[i]][0] = s->current_picture.motion_val[dir2][s->block_index[i+2]][0]; |
| 2454 | s->mv[dir2][i+2][1] = s->mv[dir2][i][1] = s->current_picture.motion_val[dir2][s->block_index[i]][1] = s->current_picture.motion_val[dir2][s->block_index[i+2]][1]; |
| 2455 | } |
| 2456 | } else { |
| 2457 | ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, v->mb_type[0], !dir); |
| 2458 | ff_vc1_pred_mv_intfr(v, 2, 0, 0, 2, v->range_x, v->range_y, v->mb_type[0], !dir); |
| 2459 | } |
| 2460 | |
| 2461 | ff_vc1_mc_4mv_luma(v, 0, dir, 0); |
| 2462 | ff_vc1_mc_4mv_luma(v, 1, dir, 0); |
| 2463 | ff_vc1_mc_4mv_luma(v, 2, dir2, 0); |
| 2464 | ff_vc1_mc_4mv_luma(v, 3, dir2, 0); |
| 2465 | ff_vc1_mc_4mv_chroma4(v, dir, dir2, 0); |
| 2466 | } else { |
| 2467 | dir = bmvtype == BMV_TYPE_BACKWARD; |
| 2468 | |
| 2469 | mvbp = ff_vc1_mbmode_intfrp[0][idx_mbmode][2]; |
| 2470 | dmv_x = dmv_y = 0; |
| 2471 | if (mvbp) |
| 2472 | get_mvdata_interlaced(v, &dmv_x, &dmv_y, 0); |
| 2473 | |
| 2474 | ff_vc1_pred_mv_intfr(v, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0], dir); |
| 2475 | v->blk_mv_type[s->block_index[0]] = 1; |
| 2476 | v->blk_mv_type[s->block_index[1]] = 1; |
| 2477 | v->blk_mv_type[s->block_index[2]] = 1; |
| 2478 | v->blk_mv_type[s->block_index[3]] = 1; |
| 2479 | ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, 0, !dir); |
| 2480 | for (i = 0; i < 2; i++) { |
| 2481 | s->mv[!dir][i+2][0] = s->mv[!dir][i][0] = s->current_picture.motion_val[!dir][s->block_index[i+2]][0] = s->current_picture.motion_val[!dir][s->block_index[i]][0]; |
| 2482 | s->mv[!dir][i+2][1] = s->mv[!dir][i][1] = s->current_picture.motion_val[!dir][s->block_index[i+2]][1] = s->current_picture.motion_val[!dir][s->block_index[i]][1]; |
| 2483 | } |
| 2484 | ff_vc1_mc_1mv(v, dir); |
| 2485 | } |
| 2486 | |
| 2487 | if (cbp) |
| 2488 | GET_MQUANT(); // p. 227 |
| 2489 | s->current_picture.qscale_table[mb_pos] = mquant; |
| 2490 | if (!v->ttmbf && cbp) |
| 2491 | ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); |
| 2492 | for (i = 0; i < 6; i++) { |
| 2493 | s->dc_val[0][s->block_index[i]] = 0; |
| 2494 | dst_idx += i >> 2; |
| 2495 | val = ((cbp >> (5 - i)) & 1); |
| 2496 | if (!fieldtx) |
| 2497 | off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); |
| 2498 | else |
| 2499 | off = (i & 4) ? 0 : ((i & 1) * 8 + ((i > 1) * s->linesize)); |
| 2500 | if (val) { |
| 2501 | pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, |
| 2502 | first_block, s->dest[dst_idx] + off, |
| 2503 | (i & 4) ? s->uvlinesize : (s->linesize << fieldtx), |
| 2504 | (i & 4) && (s->flags & CODEC_FLAG_GRAY), &block_tt); |
| 2505 | block_cbp |= pat << (i << 2); |
| 2506 | if (!v->ttmbf && ttmb < 8) |
| 2507 | ttmb = -1; |
| 2508 | first_block = 0; |
| 2509 | } |
| 2510 | } |
| 2511 | |
| 2512 | } else { // skipped |
| 2513 | dir = 0; |
| 2514 | for (i = 0; i < 6; i++) { |
| 2515 | v->mb_type[0][s->block_index[i]] = 0; |
| 2516 | s->dc_val[0][s->block_index[i]] = 0; |
| 2517 | } |
| 2518 | s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP; |
| 2519 | s->current_picture.qscale_table[mb_pos] = 0; |
| 2520 | v->blk_mv_type[s->block_index[0]] = 0; |
| 2521 | v->blk_mv_type[s->block_index[1]] = 0; |
| 2522 | v->blk_mv_type[s->block_index[2]] = 0; |
| 2523 | v->blk_mv_type[s->block_index[3]] = 0; |
| 2524 | |
| 2525 | if (!direct) { |
| 2526 | if (bmvtype == BMV_TYPE_INTERPOLATED) { |
| 2527 | ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 0); |
| 2528 | ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], 1); |
| 2529 | } else { |
| 2530 | dir = bmvtype == BMV_TYPE_BACKWARD; |
| 2531 | ff_vc1_pred_mv_intfr(v, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0], dir); |
| 2532 | if (mvsw) { |
| 2533 | int dir2 = dir; |
| 2534 | if (mvsw) |
| 2535 | dir2 = !dir; |
| 2536 | for (i = 0; i < 2; i++) { |
| 2537 | s->mv[dir][i+2][0] = s->mv[dir][i][0] = s->current_picture.motion_val[dir][s->block_index[i+2]][0] = s->current_picture.motion_val[dir][s->block_index[i]][0]; |
| 2538 | s->mv[dir][i+2][1] = s->mv[dir][i][1] = s->current_picture.motion_val[dir][s->block_index[i+2]][1] = s->current_picture.motion_val[dir][s->block_index[i]][1]; |
| 2539 | s->mv[dir2][i+2][0] = s->mv[dir2][i][0] = s->current_picture.motion_val[dir2][s->block_index[i]][0] = s->current_picture.motion_val[dir2][s->block_index[i+2]][0]; |
| 2540 | s->mv[dir2][i+2][1] = s->mv[dir2][i][1] = s->current_picture.motion_val[dir2][s->block_index[i]][1] = s->current_picture.motion_val[dir2][s->block_index[i+2]][1]; |
| 2541 | } |
| 2542 | } else { |
| 2543 | v->blk_mv_type[s->block_index[0]] = 1; |
| 2544 | v->blk_mv_type[s->block_index[1]] = 1; |
| 2545 | v->blk_mv_type[s->block_index[2]] = 1; |
| 2546 | v->blk_mv_type[s->block_index[3]] = 1; |
| 2547 | ff_vc1_pred_mv_intfr(v, 0, 0, 0, 2, v->range_x, v->range_y, 0, !dir); |
| 2548 | for (i = 0; i < 2; i++) { |
| 2549 | s->mv[!dir][i+2][0] = s->mv[!dir][i][0] = s->current_picture.motion_val[!dir][s->block_index[i+2]][0] = s->current_picture.motion_val[!dir][s->block_index[i]][0]; |
| 2550 | s->mv[!dir][i+2][1] = s->mv[!dir][i][1] = s->current_picture.motion_val[!dir][s->block_index[i+2]][1] = s->current_picture.motion_val[!dir][s->block_index[i]][1]; |
| 2551 | } |
| 2552 | } |
| 2553 | } |
| 2554 | } |
| 2555 | |
| 2556 | ff_vc1_mc_1mv(v, dir); |
| 2557 | if (direct || bmvtype == BMV_TYPE_INTERPOLATED) { |
| 2558 | ff_vc1_interp_mc(v); |
| 2559 | } |
| 2560 | } |
| 2561 | } |
| 2562 | if (s->mb_x == s->mb_width - 1) |
| 2563 | memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0]) * s->mb_stride); |
| 2564 | v->cbp[s->mb_x] = block_cbp; |
| 2565 | v->ttblk[s->mb_x] = block_tt; |
| 2566 | return 0; |
| 2567 | } |
| 2568 | |
| 2569 | /** Decode blocks of I-frame |
| 2570 | */ |
| 2571 | static void vc1_decode_i_blocks(VC1Context *v) |
| 2572 | { |
| 2573 | int k, j; |
| 2574 | MpegEncContext *s = &v->s; |
| 2575 | int cbp, val; |
| 2576 | uint8_t *coded_val; |
| 2577 | int mb_pos; |
| 2578 | |
| 2579 | /* select codingmode used for VLC tables selection */ |
| 2580 | switch (v->y_ac_table_index) { |
| 2581 | case 0: |
| 2582 | v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; |
| 2583 | break; |
| 2584 | case 1: |
| 2585 | v->codingset = CS_HIGH_MOT_INTRA; |
| 2586 | break; |
| 2587 | case 2: |
| 2588 | v->codingset = CS_MID_RATE_INTRA; |
| 2589 | break; |
| 2590 | } |
| 2591 | |
| 2592 | switch (v->c_ac_table_index) { |
| 2593 | case 0: |
| 2594 | v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; |
| 2595 | break; |
| 2596 | case 1: |
| 2597 | v->codingset2 = CS_HIGH_MOT_INTER; |
| 2598 | break; |
| 2599 | case 2: |
| 2600 | v->codingset2 = CS_MID_RATE_INTER; |
| 2601 | break; |
| 2602 | } |
| 2603 | |
| 2604 | /* Set DC scale - y and c use the same */ |
| 2605 | s->y_dc_scale = s->y_dc_scale_table[v->pq]; |
| 2606 | s->c_dc_scale = s->c_dc_scale_table[v->pq]; |
| 2607 | |
| 2608 | //do frame decode |
| 2609 | s->mb_x = s->mb_y = 0; |
| 2610 | s->mb_intra = 1; |
| 2611 | s->first_slice_line = 1; |
| 2612 | for (s->mb_y = 0; s->mb_y < s->end_mb_y; s->mb_y++) { |
| 2613 | s->mb_x = 0; |
| 2614 | init_block_index(v); |
| 2615 | for (; s->mb_x < v->end_mb_x; s->mb_x++) { |
| 2616 | uint8_t *dst[6]; |
| 2617 | ff_update_block_index(s); |
| 2618 | dst[0] = s->dest[0]; |
| 2619 | dst[1] = dst[0] + 8; |
| 2620 | dst[2] = s->dest[0] + s->linesize * 8; |
| 2621 | dst[3] = dst[2] + 8; |
| 2622 | dst[4] = s->dest[1]; |
| 2623 | dst[5] = s->dest[2]; |
| 2624 | s->bdsp.clear_blocks(s->block[0]); |
| 2625 | mb_pos = s->mb_x + s->mb_y * s->mb_width; |
| 2626 | s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA; |
| 2627 | s->current_picture.qscale_table[mb_pos] = v->pq; |
| 2628 | s->current_picture.motion_val[1][s->block_index[0]][0] = 0; |
| 2629 | s->current_picture.motion_val[1][s->block_index[0]][1] = 0; |
| 2630 | |
| 2631 | // do actual MB decoding and displaying |
| 2632 | cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2); |
| 2633 | v->s.ac_pred = get_bits1(&v->s.gb); |
| 2634 | |
| 2635 | for (k = 0; k < 6; k++) { |
| 2636 | val = ((cbp >> (5 - k)) & 1); |
| 2637 | |
| 2638 | if (k < 4) { |
| 2639 | int pred = vc1_coded_block_pred(&v->s, k, &coded_val); |
| 2640 | val = val ^ pred; |
| 2641 | *coded_val = val; |
| 2642 | } |
| 2643 | cbp |= val << (5 - k); |
| 2644 | |
| 2645 | vc1_decode_i_block(v, s->block[k], k, val, (k < 4) ? v->codingset : v->codingset2); |
| 2646 | |
| 2647 | if (k > 3 && (s->flags & CODEC_FLAG_GRAY)) |
| 2648 | continue; |
| 2649 | v->vc1dsp.vc1_inv_trans_8x8(s->block[k]); |
| 2650 | if (v->pq >= 9 && v->overlap) { |
| 2651 | if (v->rangeredfrm) |
| 2652 | for (j = 0; j < 64; j++) |
| 2653 | s->block[k][j] <<= 1; |
| 2654 | s->idsp.put_signed_pixels_clamped(s->block[k], dst[k], |
| 2655 | k & 4 ? s->uvlinesize |
| 2656 | : s->linesize); |
| 2657 | } else { |
| 2658 | if (v->rangeredfrm) |
| 2659 | for (j = 0; j < 64; j++) |
| 2660 | s->block[k][j] = (s->block[k][j] - 64) << 1; |
| 2661 | s->idsp.put_pixels_clamped(s->block[k], dst[k], |
| 2662 | k & 4 ? s->uvlinesize |
| 2663 | : s->linesize); |
| 2664 | } |
| 2665 | } |
| 2666 | |
| 2667 | if (v->pq >= 9 && v->overlap) { |
| 2668 | if (s->mb_x) { |
| 2669 | v->vc1dsp.vc1_h_overlap(s->dest[0], s->linesize); |
| 2670 | v->vc1dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize); |
| 2671 | if (!(s->flags & CODEC_FLAG_GRAY)) { |
| 2672 | v->vc1dsp.vc1_h_overlap(s->dest[1], s->uvlinesize); |
| 2673 | v->vc1dsp.vc1_h_overlap(s->dest[2], s->uvlinesize); |
| 2674 | } |
| 2675 | } |
| 2676 | v->vc1dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize); |
| 2677 | v->vc1dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize); |
| 2678 | if (!s->first_slice_line) { |
| 2679 | v->vc1dsp.vc1_v_overlap(s->dest[0], s->linesize); |
| 2680 | v->vc1dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize); |
| 2681 | if (!(s->flags & CODEC_FLAG_GRAY)) { |
| 2682 | v->vc1dsp.vc1_v_overlap(s->dest[1], s->uvlinesize); |
| 2683 | v->vc1dsp.vc1_v_overlap(s->dest[2], s->uvlinesize); |
| 2684 | } |
| 2685 | } |
| 2686 | v->vc1dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize); |
| 2687 | v->vc1dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize); |
| 2688 | } |
| 2689 | if (v->s.loop_filter) |
| 2690 | ff_vc1_loop_filter_iblk(v, v->pq); |
| 2691 | |
| 2692 | if (get_bits_count(&s->gb) > v->bits) { |
| 2693 | ff_er_add_slice(&s->er, 0, 0, s->mb_x, s->mb_y, ER_MB_ERROR); |
| 2694 | av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", |
| 2695 | get_bits_count(&s->gb), v->bits); |
| 2696 | return; |
| 2697 | } |
| 2698 | } |
| 2699 | if (!v->s.loop_filter) |
| 2700 | ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16); |
| 2701 | else if (s->mb_y) |
| 2702 | ff_mpeg_draw_horiz_band(s, (s->mb_y - 1) * 16, 16); |
| 2703 | |
| 2704 | s->first_slice_line = 0; |
| 2705 | } |
| 2706 | if (v->s.loop_filter) |
| 2707 | ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16); |
| 2708 | |
| 2709 | /* This is intentionally mb_height and not end_mb_y - unlike in advanced |
| 2710 | * profile, these only differ are when decoding MSS2 rectangles. */ |
| 2711 | ff_er_add_slice(&s->er, 0, 0, s->mb_width - 1, s->mb_height - 1, ER_MB_END); |
| 2712 | } |
| 2713 | |
| 2714 | /** Decode blocks of I-frame for advanced profile |
| 2715 | */ |
| 2716 | static void vc1_decode_i_blocks_adv(VC1Context *v) |
| 2717 | { |
| 2718 | int k; |
| 2719 | MpegEncContext *s = &v->s; |
| 2720 | int cbp, val; |
| 2721 | uint8_t *coded_val; |
| 2722 | int mb_pos; |
| 2723 | int mquant = v->pq; |
| 2724 | int mqdiff; |
| 2725 | GetBitContext *gb = &s->gb; |
| 2726 | |
| 2727 | /* select codingmode used for VLC tables selection */ |
| 2728 | switch (v->y_ac_table_index) { |
| 2729 | case 0: |
| 2730 | v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; |
| 2731 | break; |
| 2732 | case 1: |
| 2733 | v->codingset = CS_HIGH_MOT_INTRA; |
| 2734 | break; |
| 2735 | case 2: |
| 2736 | v->codingset = CS_MID_RATE_INTRA; |
| 2737 | break; |
| 2738 | } |
| 2739 | |
| 2740 | switch (v->c_ac_table_index) { |
| 2741 | case 0: |
| 2742 | v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; |
| 2743 | break; |
| 2744 | case 1: |
| 2745 | v->codingset2 = CS_HIGH_MOT_INTER; |
| 2746 | break; |
| 2747 | case 2: |
| 2748 | v->codingset2 = CS_MID_RATE_INTER; |
| 2749 | break; |
| 2750 | } |
| 2751 | |
| 2752 | // do frame decode |
| 2753 | s->mb_x = s->mb_y = 0; |
| 2754 | s->mb_intra = 1; |
| 2755 | s->first_slice_line = 1; |
| 2756 | s->mb_y = s->start_mb_y; |
| 2757 | if (s->start_mb_y) { |
| 2758 | s->mb_x = 0; |
| 2759 | init_block_index(v); |
| 2760 | memset(&s->coded_block[s->block_index[0] - s->b8_stride], 0, |
| 2761 | (1 + s->b8_stride) * sizeof(*s->coded_block)); |
| 2762 | } |
| 2763 | for (; s->mb_y < s->end_mb_y; s->mb_y++) { |
| 2764 | s->mb_x = 0; |
| 2765 | init_block_index(v); |
| 2766 | for (;s->mb_x < s->mb_width; s->mb_x++) { |
| 2767 | int16_t (*block)[64] = v->block[v->cur_blk_idx]; |
| 2768 | ff_update_block_index(s); |
| 2769 | s->bdsp.clear_blocks(block[0]); |
| 2770 | mb_pos = s->mb_x + s->mb_y * s->mb_stride; |
| 2771 | s->current_picture.mb_type[mb_pos + v->mb_off] = MB_TYPE_INTRA; |
| 2772 | s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0; |
| 2773 | s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0; |
| 2774 | |
| 2775 | // do actual MB decoding and displaying |
| 2776 | if (v->fieldtx_is_raw) |
| 2777 | v->fieldtx_plane[mb_pos] = get_bits1(&v->s.gb); |
| 2778 | cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2); |
| 2779 | if ( v->acpred_is_raw) |
| 2780 | v->s.ac_pred = get_bits1(&v->s.gb); |
| 2781 | else |
| 2782 | v->s.ac_pred = v->acpred_plane[mb_pos]; |
| 2783 | |
| 2784 | if (v->condover == CONDOVER_SELECT && v->overflg_is_raw) |
| 2785 | v->over_flags_plane[mb_pos] = get_bits1(&v->s.gb); |
| 2786 | |
| 2787 | GET_MQUANT(); |
| 2788 | |
| 2789 | s->current_picture.qscale_table[mb_pos] = mquant; |
| 2790 | /* Set DC scale - y and c use the same */ |
| 2791 | s->y_dc_scale = s->y_dc_scale_table[mquant]; |
| 2792 | s->c_dc_scale = s->c_dc_scale_table[mquant]; |
| 2793 | |
| 2794 | for (k = 0; k < 6; k++) { |
| 2795 | val = ((cbp >> (5 - k)) & 1); |
| 2796 | |
| 2797 | if (k < 4) { |
| 2798 | int pred = vc1_coded_block_pred(&v->s, k, &coded_val); |
| 2799 | val = val ^ pred; |
| 2800 | *coded_val = val; |
| 2801 | } |
| 2802 | cbp |= val << (5 - k); |
| 2803 | |
| 2804 | v->a_avail = !s->first_slice_line || (k == 2 || k == 3); |
| 2805 | v->c_avail = !!s->mb_x || (k == 1 || k == 3); |
| 2806 | |
| 2807 | vc1_decode_i_block_adv(v, block[k], k, val, |
| 2808 | (k < 4) ? v->codingset : v->codingset2, mquant); |
| 2809 | |
| 2810 | if (k > 3 && (s->flags & CODEC_FLAG_GRAY)) |
| 2811 | continue; |
| 2812 | v->vc1dsp.vc1_inv_trans_8x8(block[k]); |
| 2813 | } |
| 2814 | |
| 2815 | ff_vc1_smooth_overlap_filter_iblk(v); |
| 2816 | vc1_put_signed_blocks_clamped(v); |
| 2817 | if (v->s.loop_filter) |
| 2818 | ff_vc1_loop_filter_iblk_delayed(v, v->pq); |
| 2819 | |
| 2820 | if (get_bits_count(&s->gb) > v->bits) { |
| 2821 | // TODO: may need modification to handle slice coding |
| 2822 | ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR); |
| 2823 | av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", |
| 2824 | get_bits_count(&s->gb), v->bits); |
| 2825 | return; |
| 2826 | } |
| 2827 | } |
| 2828 | if (!v->s.loop_filter) |
| 2829 | ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16); |
| 2830 | else if (s->mb_y) |
| 2831 | ff_mpeg_draw_horiz_band(s, (s->mb_y-1) * 16, 16); |
| 2832 | s->first_slice_line = 0; |
| 2833 | } |
| 2834 | |
| 2835 | /* raw bottom MB row */ |
| 2836 | s->mb_x = 0; |
| 2837 | init_block_index(v); |
| 2838 | |
| 2839 | for (;s->mb_x < s->mb_width; s->mb_x++) { |
| 2840 | ff_update_block_index(s); |
| 2841 | vc1_put_signed_blocks_clamped(v); |
| 2842 | if (v->s.loop_filter) |
| 2843 | ff_vc1_loop_filter_iblk_delayed(v, v->pq); |
| 2844 | } |
| 2845 | if (v->s.loop_filter) |
| 2846 | ff_mpeg_draw_horiz_band(s, (s->end_mb_y-1)*16, 16); |
| 2847 | ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1, |
| 2848 | (s->end_mb_y << v->field_mode) - 1, ER_MB_END); |
| 2849 | } |
| 2850 | |
| 2851 | static void vc1_decode_p_blocks(VC1Context *v) |
| 2852 | { |
| 2853 | MpegEncContext *s = &v->s; |
| 2854 | int apply_loop_filter; |
| 2855 | |
| 2856 | /* select codingmode used for VLC tables selection */ |
| 2857 | switch (v->c_ac_table_index) { |
| 2858 | case 0: |
| 2859 | v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; |
| 2860 | break; |
| 2861 | case 1: |
| 2862 | v->codingset = CS_HIGH_MOT_INTRA; |
| 2863 | break; |
| 2864 | case 2: |
| 2865 | v->codingset = CS_MID_RATE_INTRA; |
| 2866 | break; |
| 2867 | } |
| 2868 | |
| 2869 | switch (v->c_ac_table_index) { |
| 2870 | case 0: |
| 2871 | v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; |
| 2872 | break; |
| 2873 | case 1: |
| 2874 | v->codingset2 = CS_HIGH_MOT_INTER; |
| 2875 | break; |
| 2876 | case 2: |
| 2877 | v->codingset2 = CS_MID_RATE_INTER; |
| 2878 | break; |
| 2879 | } |
| 2880 | |
| 2881 | apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY) && |
| 2882 | v->fcm == PROGRESSIVE; |
| 2883 | s->first_slice_line = 1; |
| 2884 | memset(v->cbp_base, 0, sizeof(v->cbp_base[0])*2*s->mb_stride); |
| 2885 | for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) { |
| 2886 | s->mb_x = 0; |
| 2887 | init_block_index(v); |
| 2888 | for (; s->mb_x < s->mb_width; s->mb_x++) { |
| 2889 | ff_update_block_index(s); |
| 2890 | |
| 2891 | if (v->fcm == ILACE_FIELD) |
| 2892 | vc1_decode_p_mb_intfi(v); |
| 2893 | else if (v->fcm == ILACE_FRAME) |
| 2894 | vc1_decode_p_mb_intfr(v); |
| 2895 | else vc1_decode_p_mb(v); |
| 2896 | if (s->mb_y != s->start_mb_y && apply_loop_filter) |
| 2897 | ff_vc1_apply_p_loop_filter(v); |
| 2898 | if (get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) { |
| 2899 | // TODO: may need modification to handle slice coding |
| 2900 | ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR); |
| 2901 | av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", |
| 2902 | get_bits_count(&s->gb), v->bits, s->mb_x, s->mb_y); |
| 2903 | return; |
| 2904 | } |
| 2905 | } |
| 2906 | memmove(v->cbp_base, v->cbp, sizeof(v->cbp_base[0]) * s->mb_stride); |
| 2907 | memmove(v->ttblk_base, v->ttblk, sizeof(v->ttblk_base[0]) * s->mb_stride); |
| 2908 | memmove(v->is_intra_base, v->is_intra, sizeof(v->is_intra_base[0]) * s->mb_stride); |
| 2909 | memmove(v->luma_mv_base, v->luma_mv, sizeof(v->luma_mv_base[0]) * s->mb_stride); |
| 2910 | if (s->mb_y != s->start_mb_y) ff_mpeg_draw_horiz_band(s, (s->mb_y - 1) * 16, 16); |
| 2911 | s->first_slice_line = 0; |
| 2912 | } |
| 2913 | if (apply_loop_filter) { |
| 2914 | s->mb_x = 0; |
| 2915 | init_block_index(v); |
| 2916 | for (; s->mb_x < s->mb_width; s->mb_x++) { |
| 2917 | ff_update_block_index(s); |
| 2918 | ff_vc1_apply_p_loop_filter(v); |
| 2919 | } |
| 2920 | } |
| 2921 | if (s->end_mb_y >= s->start_mb_y) |
| 2922 | ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16); |
| 2923 | ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1, |
| 2924 | (s->end_mb_y << v->field_mode) - 1, ER_MB_END); |
| 2925 | } |
| 2926 | |
| 2927 | static void vc1_decode_b_blocks(VC1Context *v) |
| 2928 | { |
| 2929 | MpegEncContext *s = &v->s; |
| 2930 | |
| 2931 | /* select codingmode used for VLC tables selection */ |
| 2932 | switch (v->c_ac_table_index) { |
| 2933 | case 0: |
| 2934 | v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; |
| 2935 | break; |
| 2936 | case 1: |
| 2937 | v->codingset = CS_HIGH_MOT_INTRA; |
| 2938 | break; |
| 2939 | case 2: |
| 2940 | v->codingset = CS_MID_RATE_INTRA; |
| 2941 | break; |
| 2942 | } |
| 2943 | |
| 2944 | switch (v->c_ac_table_index) { |
| 2945 | case 0: |
| 2946 | v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; |
| 2947 | break; |
| 2948 | case 1: |
| 2949 | v->codingset2 = CS_HIGH_MOT_INTER; |
| 2950 | break; |
| 2951 | case 2: |
| 2952 | v->codingset2 = CS_MID_RATE_INTER; |
| 2953 | break; |
| 2954 | } |
| 2955 | |
| 2956 | s->first_slice_line = 1; |
| 2957 | for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) { |
| 2958 | s->mb_x = 0; |
| 2959 | init_block_index(v); |
| 2960 | for (; s->mb_x < s->mb_width; s->mb_x++) { |
| 2961 | ff_update_block_index(s); |
| 2962 | |
| 2963 | if (v->fcm == ILACE_FIELD) |
| 2964 | vc1_decode_b_mb_intfi(v); |
| 2965 | else if (v->fcm == ILACE_FRAME) |
| 2966 | vc1_decode_b_mb_intfr(v); |
| 2967 | else |
| 2968 | vc1_decode_b_mb(v); |
| 2969 | if (get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) { |
| 2970 | // TODO: may need modification to handle slice coding |
| 2971 | ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR); |
| 2972 | av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", |
| 2973 | get_bits_count(&s->gb), v->bits, s->mb_x, s->mb_y); |
| 2974 | return; |
| 2975 | } |
| 2976 | if (v->s.loop_filter) |
| 2977 | ff_vc1_loop_filter_iblk(v, v->pq); |
| 2978 | } |
| 2979 | if (!v->s.loop_filter) |
| 2980 | ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16); |
| 2981 | else if (s->mb_y) |
| 2982 | ff_mpeg_draw_horiz_band(s, (s->mb_y - 1) * 16, 16); |
| 2983 | s->first_slice_line = 0; |
| 2984 | } |
| 2985 | if (v->s.loop_filter) |
| 2986 | ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16); |
| 2987 | ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1, |
| 2988 | (s->end_mb_y << v->field_mode) - 1, ER_MB_END); |
| 2989 | } |
| 2990 | |
| 2991 | static void vc1_decode_skip_blocks(VC1Context *v) |
| 2992 | { |
| 2993 | MpegEncContext *s = &v->s; |
| 2994 | |
| 2995 | if (!v->s.last_picture.f->data[0]) |
| 2996 | return; |
| 2997 | |
| 2998 | ff_er_add_slice(&s->er, 0, s->start_mb_y, s->mb_width - 1, s->end_mb_y - 1, ER_MB_END); |
| 2999 | s->first_slice_line = 1; |
| 3000 | for (s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) { |
| 3001 | s->mb_x = 0; |
| 3002 | init_block_index(v); |
| 3003 | ff_update_block_index(s); |
| 3004 | memcpy(s->dest[0], s->last_picture.f->data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16); |
| 3005 | memcpy(s->dest[1], s->last_picture.f->data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8); |
| 3006 | memcpy(s->dest[2], s->last_picture.f->data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8); |
| 3007 | ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16); |
| 3008 | s->first_slice_line = 0; |
| 3009 | } |
| 3010 | s->pict_type = AV_PICTURE_TYPE_P; |
| 3011 | } |
| 3012 | |
| 3013 | void ff_vc1_decode_blocks(VC1Context *v) |
| 3014 | { |
| 3015 | |
| 3016 | v->s.esc3_level_length = 0; |
| 3017 | if (v->x8_type) { |
| 3018 | ff_intrax8_decode_picture(&v->x8, 2*v->pq + v->halfpq, v->pq * !v->pquantizer); |
| 3019 | } else { |
| 3020 | v->cur_blk_idx = 0; |
| 3021 | v->left_blk_idx = -1; |
| 3022 | v->topleft_blk_idx = 1; |
| 3023 | v->top_blk_idx = 2; |
| 3024 | switch (v->s.pict_type) { |
| 3025 | case AV_PICTURE_TYPE_I: |
| 3026 | if (v->profile == PROFILE_ADVANCED) |
| 3027 | vc1_decode_i_blocks_adv(v); |
| 3028 | else |
| 3029 | vc1_decode_i_blocks(v); |
| 3030 | break; |
| 3031 | case AV_PICTURE_TYPE_P: |
| 3032 | if (v->p_frame_skipped) |
| 3033 | vc1_decode_skip_blocks(v); |
| 3034 | else |
| 3035 | vc1_decode_p_blocks(v); |
| 3036 | break; |
| 3037 | case AV_PICTURE_TYPE_B: |
| 3038 | if (v->bi_type) { |
| 3039 | if (v->profile == PROFILE_ADVANCED) |
| 3040 | vc1_decode_i_blocks_adv(v); |
| 3041 | else |
| 3042 | vc1_decode_i_blocks(v); |
| 3043 | } else |
| 3044 | vc1_decode_b_blocks(v); |
| 3045 | break; |
| 3046 | } |
| 3047 | } |
| 3048 | } |