1/* 2 * Error resilience / concealment 3 * 4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with FFmpeg; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23/** 24 * @file 25 * Error resilience / concealment. 26 */ 27 28#include <limits.h> 29 30#include "libavutil/internal.h" 31#include "avcodec.h" 32#include "error_resilience.h" 33#include "mpegutils.h" 34#include "mpegvideo.h" 35#include "rectangle.h" 36#include "thread.h" 37#include "version.h" 38 39/** 40 * @param stride the number of MVs to get to the next row 41 * @param mv_step the number of MVs per row or column in a macroblock 42 */ 43static void set_mv_strides(ERContext *s, int *mv_step, int *stride) 44{ 45 if (s->avctx->codec_id == AV_CODEC_ID_H264) { 46 av_assert0(s->quarter_sample); 47 *mv_step = 4; 48 *stride = s->mb_width * 4; 49 } else { 50 *mv_step = 2; 51 *stride = s->b8_stride; 52 } 53} 54 55/** 56 * Replace the current MB with a flat dc-only version. 57 */ 58static void put_dc(ERContext *s, uint8_t *dest_y, uint8_t *dest_cb, 59 uint8_t *dest_cr, int mb_x, int mb_y) 60{ 61 int *linesize = s->cur_pic.f->linesize; 62 int dc, dcu, dcv, y, i; 63 for (i = 0; i < 4; i++) { 64 dc = s->dc_val[0][mb_x * 2 + (i & 1) + (mb_y * 2 + (i >> 1)) * s->b8_stride]; 65 if (dc < 0) 66 dc = 0; 67 else if (dc > 2040) 68 dc = 2040; 69 for (y = 0; y < 8; y++) { 70 int x; 71 for (x = 0; x < 8; x++) 72 dest_y[x + (i & 1) * 8 + (y + (i >> 1) * 8) * linesize[0]] = dc / 8; 73 } 74 } 75 dcu = s->dc_val[1][mb_x + mb_y * s->mb_stride]; 76 dcv = s->dc_val[2][mb_x + mb_y * s->mb_stride]; 77 if (dcu < 0) 78 dcu = 0; 79 else if (dcu > 2040) 80 dcu = 2040; 81 if (dcv < 0) 82 dcv = 0; 83 else if (dcv > 2040) 84 dcv = 2040; 85 for (y = 0; y < 8; y++) { 86 int x; 87 for (x = 0; x < 8; x++) { 88 dest_cb[x + y * linesize[1]] = dcu / 8; 89 dest_cr[x + y * linesize[2]] = dcv / 8; 90 } 91 } 92} 93 94static void filter181(int16_t *data, int width, int height, int stride) 95{ 96 int x, y; 97 98 /* horizontal filter */ 99 for (y = 1; y < height - 1; y++) { 100 int prev_dc = data[0 + y * stride]; 101 102 for (x = 1; x < width - 1; x++) { 103 int dc; 104 dc = -prev_dc + 105 data[x + y * stride] * 8 - 106 data[x + 1 + y * stride]; 107 dc = (dc * 10923 + 32768) >> 16; 108 prev_dc = data[x + y * stride]; 109 data[x + y * stride] = dc; 110 } 111 } 112 113 /* vertical filter */ 114 for (x = 1; x < width - 1; x++) { 115 int prev_dc = data[x]; 116 117 for (y = 1; y < height - 1; y++) { 118 int dc; 119 120 dc = -prev_dc + 121 data[x + y * stride] * 8 - 122 data[x + (y + 1) * stride]; 123 dc = (dc * 10923 + 32768) >> 16; 124 prev_dc = data[x + y * stride]; 125 data[x + y * stride] = dc; 126 } 127 } 128} 129 130/** 131 * guess the dc of blocks which do not have an undamaged dc 132 * @param w width in 8 pixel blocks 133 * @param h height in 8 pixel blocks 134 */ 135static void guess_dc(ERContext *s, int16_t *dc, int w, 136 int h, int stride, int is_luma) 137{ 138 int b_x, b_y; 139 int16_t (*col )[4] = av_malloc_array(stride, h*sizeof( int16_t)*4); 140 uint32_t (*dist)[4] = av_malloc_array(stride, h*sizeof(uint32_t)*4); 141 142 if(!col || !dist) { 143 av_log(s->avctx, AV_LOG_ERROR, "guess_dc() is out of memory\n"); 144 goto fail; 145 } 146 147 for(b_y=0; b_y<h; b_y++){ 148 int color= 1024; 149 int distance= -1; 150 for(b_x=0; b_x<w; b_x++){ 151 int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride; 152 int error_j= s->error_status_table[mb_index_j]; 153 int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]); 154 if(intra_j==0 || !(error_j&ER_DC_ERROR)){ 155 color= dc[b_x + b_y*stride]; 156 distance= b_x; 157 } 158 col [b_x + b_y*stride][1]= color; 159 dist[b_x + b_y*stride][1]= distance >= 0 ? b_x-distance : 9999; 160 } 161 color= 1024; 162 distance= -1; 163 for(b_x=w-1; b_x>=0; b_x--){ 164 int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride; 165 int error_j= s->error_status_table[mb_index_j]; 166 int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]); 167 if(intra_j==0 || !(error_j&ER_DC_ERROR)){ 168 color= dc[b_x + b_y*stride]; 169 distance= b_x; 170 } 171 col [b_x + b_y*stride][0]= color; 172 dist[b_x + b_y*stride][0]= distance >= 0 ? distance-b_x : 9999; 173 } 174 } 175 for(b_x=0; b_x<w; b_x++){ 176 int color= 1024; 177 int distance= -1; 178 for(b_y=0; b_y<h; b_y++){ 179 int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride; 180 int error_j= s->error_status_table[mb_index_j]; 181 int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]); 182 if(intra_j==0 || !(error_j&ER_DC_ERROR)){ 183 color= dc[b_x + b_y*stride]; 184 distance= b_y; 185 } 186 col [b_x + b_y*stride][3]= color; 187 dist[b_x + b_y*stride][3]= distance >= 0 ? b_y-distance : 9999; 188 } 189 color= 1024; 190 distance= -1; 191 for(b_y=h-1; b_y>=0; b_y--){ 192 int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride; 193 int error_j= s->error_status_table[mb_index_j]; 194 int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]); 195 if(intra_j==0 || !(error_j&ER_DC_ERROR)){ 196 color= dc[b_x + b_y*stride]; 197 distance= b_y; 198 } 199 col [b_x + b_y*stride][2]= color; 200 dist[b_x + b_y*stride][2]= distance >= 0 ? distance-b_y : 9999; 201 } 202 } 203 204 for (b_y = 0; b_y < h; b_y++) { 205 for (b_x = 0; b_x < w; b_x++) { 206 int mb_index, error, j; 207 int64_t guess, weight_sum; 208 mb_index = (b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride; 209 error = s->error_status_table[mb_index]; 210 211 if (IS_INTER(s->cur_pic.mb_type[mb_index])) 212 continue; // inter 213 if (!(error & ER_DC_ERROR)) 214 continue; // dc-ok 215 216 weight_sum = 0; 217 guess = 0; 218 for (j = 0; j < 4; j++) { 219 int64_t weight = 256 * 256 * 256 * 16 / FFMAX(dist[b_x + b_y*stride][j], 1); 220 guess += weight*(int64_t)col[b_x + b_y*stride][j]; 221 weight_sum += weight; 222 } 223 guess = (guess + weight_sum / 2) / weight_sum; 224 dc[b_x + b_y * stride] = guess; 225 } 226 } 227 228fail: 229 av_freep(&col); 230 av_freep(&dist); 231} 232 233/** 234 * simple horizontal deblocking filter used for error resilience 235 * @param w width in 8 pixel blocks 236 * @param h height in 8 pixel blocks 237 */ 238static void h_block_filter(ERContext *s, uint8_t *dst, int w, 239 int h, int stride, int is_luma) 240{ 241 int b_x, b_y, mvx_stride, mvy_stride; 242 const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP; 243 set_mv_strides(s, &mvx_stride, &mvy_stride); 244 mvx_stride >>= is_luma; 245 mvy_stride *= mvx_stride; 246 247 for (b_y = 0; b_y < h; b_y++) { 248 for (b_x = 0; b_x < w - 1; b_x++) { 249 int y; 250 int left_status = s->error_status_table[( b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride]; 251 int right_status = s->error_status_table[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride]; 252 int left_intra = IS_INTRA(s->cur_pic.mb_type[( b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride]); 253 int right_intra = IS_INTRA(s->cur_pic.mb_type[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride]); 254 int left_damage = left_status & ER_MB_ERROR; 255 int right_damage = right_status & ER_MB_ERROR; 256 int offset = b_x * 8 + b_y * stride * 8; 257 int16_t *left_mv = s->cur_pic.motion_val[0][mvy_stride * b_y + mvx_stride * b_x]; 258 int16_t *right_mv = s->cur_pic.motion_val[0][mvy_stride * b_y + mvx_stride * (b_x + 1)]; 259 if (!(left_damage || right_damage)) 260 continue; // both undamaged 261 if ((!left_intra) && (!right_intra) && 262 FFABS(left_mv[0] - right_mv[0]) + 263 FFABS(left_mv[1] + right_mv[1]) < 2) 264 continue; 265 266 for (y = 0; y < 8; y++) { 267 int a, b, c, d; 268 269 a = dst[offset + 7 + y * stride] - dst[offset + 6 + y * stride]; 270 b = dst[offset + 8 + y * stride] - dst[offset + 7 + y * stride]; 271 c = dst[offset + 9 + y * stride] - dst[offset + 8 + y * stride]; 272 273 d = FFABS(b) - ((FFABS(a) + FFABS(c) + 1) >> 1); 274 d = FFMAX(d, 0); 275 if (b < 0) 276 d = -d; 277 278 if (d == 0) 279 continue; 280 281 if (!(left_damage && right_damage)) 282 d = d * 16 / 9; 283 284 if (left_damage) { 285 dst[offset + 7 + y * stride] = cm[dst[offset + 7 + y * stride] + ((d * 7) >> 4)]; 286 dst[offset + 6 + y * stride] = cm[dst[offset + 6 + y * stride] + ((d * 5) >> 4)]; 287 dst[offset + 5 + y * stride] = cm[dst[offset + 5 + y * stride] + ((d * 3) >> 4)]; 288 dst[offset + 4 + y * stride] = cm[dst[offset + 4 + y * stride] + ((d * 1) >> 4)]; 289 } 290 if (right_damage) { 291 dst[offset + 8 + y * stride] = cm[dst[offset + 8 + y * stride] - ((d * 7) >> 4)]; 292 dst[offset + 9 + y * stride] = cm[dst[offset + 9 + y * stride] - ((d * 5) >> 4)]; 293 dst[offset + 10+ y * stride] = cm[dst[offset + 10 + y * stride] - ((d * 3) >> 4)]; 294 dst[offset + 11+ y * stride] = cm[dst[offset + 11 + y * stride] - ((d * 1) >> 4)]; 295 } 296 } 297 } 298 } 299} 300 301/** 302 * simple vertical deblocking filter used for error resilience 303 * @param w width in 8 pixel blocks 304 * @param h height in 8 pixel blocks 305 */ 306static void v_block_filter(ERContext *s, uint8_t *dst, int w, int h, 307 int stride, int is_luma) 308{ 309 int b_x, b_y, mvx_stride, mvy_stride; 310 const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP; 311 set_mv_strides(s, &mvx_stride, &mvy_stride); 312 mvx_stride >>= is_luma; 313 mvy_stride *= mvx_stride; 314 315 for (b_y = 0; b_y < h - 1; b_y++) { 316 for (b_x = 0; b_x < w; b_x++) { 317 int x; 318 int top_status = s->error_status_table[(b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride]; 319 int bottom_status = s->error_status_table[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride]; 320 int top_intra = IS_INTRA(s->cur_pic.mb_type[(b_x >> is_luma) + ( b_y >> is_luma) * s->mb_stride]); 321 int bottom_intra = IS_INTRA(s->cur_pic.mb_type[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride]); 322 int top_damage = top_status & ER_MB_ERROR; 323 int bottom_damage = bottom_status & ER_MB_ERROR; 324 int offset = b_x * 8 + b_y * stride * 8; 325 326 int16_t *top_mv = s->cur_pic.motion_val[0][mvy_stride * b_y + mvx_stride * b_x]; 327 int16_t *bottom_mv = s->cur_pic.motion_val[0][mvy_stride * (b_y + 1) + mvx_stride * b_x]; 328 329 if (!(top_damage || bottom_damage)) 330 continue; // both undamaged 331 332 if ((!top_intra) && (!bottom_intra) && 333 FFABS(top_mv[0] - bottom_mv[0]) + 334 FFABS(top_mv[1] + bottom_mv[1]) < 2) 335 continue; 336 337 for (x = 0; x < 8; x++) { 338 int a, b, c, d; 339 340 a = dst[offset + x + 7 * stride] - dst[offset + x + 6 * stride]; 341 b = dst[offset + x + 8 * stride] - dst[offset + x + 7 * stride]; 342 c = dst[offset + x + 9 * stride] - dst[offset + x + 8 * stride]; 343 344 d = FFABS(b) - ((FFABS(a) + FFABS(c) + 1) >> 1); 345 d = FFMAX(d, 0); 346 if (b < 0) 347 d = -d; 348 349 if (d == 0) 350 continue; 351 352 if (!(top_damage && bottom_damage)) 353 d = d * 16 / 9; 354 355 if (top_damage) { 356 dst[offset + x + 7 * stride] = cm[dst[offset + x + 7 * stride] + ((d * 7) >> 4)]; 357 dst[offset + x + 6 * stride] = cm[dst[offset + x + 6 * stride] + ((d * 5) >> 4)]; 358 dst[offset + x + 5 * stride] = cm[dst[offset + x + 5 * stride] + ((d * 3) >> 4)]; 359 dst[offset + x + 4 * stride] = cm[dst[offset + x + 4 * stride] + ((d * 1) >> 4)]; 360 } 361 if (bottom_damage) { 362 dst[offset + x + 8 * stride] = cm[dst[offset + x + 8 * stride] - ((d * 7) >> 4)]; 363 dst[offset + x + 9 * stride] = cm[dst[offset + x + 9 * stride] - ((d * 5) >> 4)]; 364 dst[offset + x + 10 * stride] = cm[dst[offset + x + 10 * stride] - ((d * 3) >> 4)]; 365 dst[offset + x + 11 * stride] = cm[dst[offset + x + 11 * stride] - ((d * 1) >> 4)]; 366 } 367 } 368 } 369 } 370} 371 372static void guess_mv(ERContext *s) 373{ 374 uint8_t *fixed = s->er_temp_buffer; 375#define MV_FROZEN 3 376#define MV_CHANGED 2 377#define MV_UNCHANGED 1 378 const int mb_stride = s->mb_stride; 379 const int mb_width = s->mb_width; 380 const int mb_height = s->mb_height; 381 int i, depth, num_avail; 382 int mb_x, mb_y, mot_step, mot_stride; 383 384 set_mv_strides(s, &mot_step, &mot_stride); 385 386 num_avail = 0; 387 for (i = 0; i < s->mb_num; i++) { 388 const int mb_xy = s->mb_index2xy[i]; 389 int f = 0; 390 int error = s->error_status_table[mb_xy]; 391 392 if (IS_INTRA(s->cur_pic.mb_type[mb_xy])) 393 f = MV_FROZEN; // intra // FIXME check 394 if (!(error & ER_MV_ERROR)) 395 f = MV_FROZEN; // inter with undamaged MV 396 397 fixed[mb_xy] = f; 398 if (f == MV_FROZEN) 399 num_avail++; 400 else if(s->last_pic.f->data[0] && s->last_pic.motion_val[0]){ 401 const int mb_y= mb_xy / s->mb_stride; 402 const int mb_x= mb_xy % s->mb_stride; 403 const int mot_index= (mb_x + mb_y*mot_stride) * mot_step; 404 s->cur_pic.motion_val[0][mot_index][0]= s->last_pic.motion_val[0][mot_index][0]; 405 s->cur_pic.motion_val[0][mot_index][1]= s->last_pic.motion_val[0][mot_index][1]; 406 s->cur_pic.ref_index[0][4*mb_xy] = s->last_pic.ref_index[0][4*mb_xy]; 407 } 408 } 409 410 if ((!(s->avctx->error_concealment&FF_EC_GUESS_MVS)) || 411 num_avail <= mb_width / 2) { 412 for (mb_y = 0; mb_y < s->mb_height; mb_y++) { 413 for (mb_x = 0; mb_x < s->mb_width; mb_x++) { 414 const int mb_xy = mb_x + mb_y * s->mb_stride; 415 int mv_dir = (s->last_pic.f && s->last_pic.f->data[0]) ? MV_DIR_FORWARD : MV_DIR_BACKWARD; 416 417 if (IS_INTRA(s->cur_pic.mb_type[mb_xy])) 418 continue; 419 if (!(s->error_status_table[mb_xy] & ER_MV_ERROR)) 420 continue; 421 422 s->mv[0][0][0] = 0; 423 s->mv[0][0][1] = 0; 424 s->decode_mb(s->opaque, 0, mv_dir, MV_TYPE_16X16, &s->mv, 425 mb_x, mb_y, 0, 0); 426 } 427 } 428 return; 429 } 430 431 for (depth = 0; ; depth++) { 432 int changed, pass, none_left; 433 434 none_left = 1; 435 changed = 1; 436 for (pass = 0; (changed || pass < 2) && pass < 10; pass++) { 437 int mb_x, mb_y; 438 int score_sum = 0; 439 440 changed = 0; 441 for (mb_y = 0; mb_y < s->mb_height; mb_y++) { 442 for (mb_x = 0; mb_x < s->mb_width; mb_x++) { 443 const int mb_xy = mb_x + mb_y * s->mb_stride; 444 int mv_predictor[8][2] = { { 0 } }; 445 int ref[8] = { 0 }; 446 int pred_count = 0; 447 int j; 448 int best_score = 256 * 256 * 256 * 64; 449 int best_pred = 0; 450 const int mot_index = (mb_x + mb_y * mot_stride) * mot_step; 451 int prev_x, prev_y, prev_ref; 452 453 if ((mb_x ^ mb_y ^ pass) & 1) 454 continue; 455 456 if (fixed[mb_xy] == MV_FROZEN) 457 continue; 458 av_assert1(!IS_INTRA(s->cur_pic.mb_type[mb_xy])); 459 av_assert1(s->last_pic.f && s->last_pic.f->data[0]); 460 461 j = 0; 462 if (mb_x > 0 && fixed[mb_xy - 1] == MV_FROZEN) 463 j = 1; 464 if (mb_x + 1 < mb_width && fixed[mb_xy + 1] == MV_FROZEN) 465 j = 1; 466 if (mb_y > 0 && fixed[mb_xy - mb_stride] == MV_FROZEN) 467 j = 1; 468 if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] == MV_FROZEN) 469 j = 1; 470 if (j == 0) 471 continue; 472 473 j = 0; 474 if (mb_x > 0 && fixed[mb_xy - 1 ] == MV_CHANGED) 475 j = 1; 476 if (mb_x + 1 < mb_width && fixed[mb_xy + 1 ] == MV_CHANGED) 477 j = 1; 478 if (mb_y > 0 && fixed[mb_xy - mb_stride] == MV_CHANGED) 479 j = 1; 480 if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] == MV_CHANGED) 481 j = 1; 482 if (j == 0 && pass > 1) 483 continue; 484 485 none_left = 0; 486 487 if (mb_x > 0 && fixed[mb_xy - 1]) { 488 mv_predictor[pred_count][0] = 489 s->cur_pic.motion_val[0][mot_index - mot_step][0]; 490 mv_predictor[pred_count][1] = 491 s->cur_pic.motion_val[0][mot_index - mot_step][1]; 492 ref[pred_count] = 493 s->cur_pic.ref_index[0][4 * (mb_xy - 1)]; 494 pred_count++; 495 } 496 if (mb_x + 1 < mb_width && fixed[mb_xy + 1]) { 497 mv_predictor[pred_count][0] = 498 s->cur_pic.motion_val[0][mot_index + mot_step][0]; 499 mv_predictor[pred_count][1] = 500 s->cur_pic.motion_val[0][mot_index + mot_step][1]; 501 ref[pred_count] = 502 s->cur_pic.ref_index[0][4 * (mb_xy + 1)]; 503 pred_count++; 504 } 505 if (mb_y > 0 && fixed[mb_xy - mb_stride]) { 506 mv_predictor[pred_count][0] = 507 s->cur_pic.motion_val[0][mot_index - mot_stride * mot_step][0]; 508 mv_predictor[pred_count][1] = 509 s->cur_pic.motion_val[0][mot_index - mot_stride * mot_step][1]; 510 ref[pred_count] = 511 s->cur_pic.ref_index[0][4 * (mb_xy - s->mb_stride)]; 512 pred_count++; 513 } 514 if (mb_y + 1<mb_height && fixed[mb_xy + mb_stride]) { 515 mv_predictor[pred_count][0] = 516 s->cur_pic.motion_val[0][mot_index + mot_stride * mot_step][0]; 517 mv_predictor[pred_count][1] = 518 s->cur_pic.motion_val[0][mot_index + mot_stride * mot_step][1]; 519 ref[pred_count] = 520 s->cur_pic.ref_index[0][4 * (mb_xy + s->mb_stride)]; 521 pred_count++; 522 } 523 if (pred_count == 0) 524 continue; 525 526 if (pred_count > 1) { 527 int sum_x = 0, sum_y = 0, sum_r = 0; 528 int max_x, max_y, min_x, min_y, max_r, min_r; 529 530 for (j = 0; j < pred_count; j++) { 531 sum_x += mv_predictor[j][0]; 532 sum_y += mv_predictor[j][1]; 533 sum_r += ref[j]; 534 if (j && ref[j] != ref[j - 1]) 535 goto skip_mean_and_median; 536 } 537 538 /* mean */ 539 mv_predictor[pred_count][0] = sum_x / j; 540 mv_predictor[pred_count][1] = sum_y / j; 541 ref[pred_count] = sum_r / j; 542 543 /* median */ 544 if (pred_count >= 3) { 545 min_y = min_x = min_r = 99999; 546 max_y = max_x = max_r = -99999; 547 } else { 548 min_x = min_y = max_x = max_y = min_r = max_r = 0; 549 } 550 for (j = 0; j < pred_count; j++) { 551 max_x = FFMAX(max_x, mv_predictor[j][0]); 552 max_y = FFMAX(max_y, mv_predictor[j][1]); 553 max_r = FFMAX(max_r, ref[j]); 554 min_x = FFMIN(min_x, mv_predictor[j][0]); 555 min_y = FFMIN(min_y, mv_predictor[j][1]); 556 min_r = FFMIN(min_r, ref[j]); 557 } 558 mv_predictor[pred_count + 1][0] = sum_x - max_x - min_x; 559 mv_predictor[pred_count + 1][1] = sum_y - max_y - min_y; 560 ref[pred_count + 1] = sum_r - max_r - min_r; 561 562 if (pred_count == 4) { 563 mv_predictor[pred_count + 1][0] /= 2; 564 mv_predictor[pred_count + 1][1] /= 2; 565 ref[pred_count + 1] /= 2; 566 } 567 pred_count += 2; 568 } 569 570skip_mean_and_median: 571 /* zero MV */ 572 pred_count++; 573 574 if (!fixed[mb_xy] && 0) { 575 if (s->avctx->codec_id == AV_CODEC_ID_H264) { 576 // FIXME 577 } else { 578 ff_thread_await_progress(s->last_pic.tf, 579 mb_y, 0); 580 } 581 if (!s->last_pic.motion_val[0] || 582 !s->last_pic.ref_index[0]) 583 goto skip_last_mv; 584 prev_x = s->last_pic.motion_val[0][mot_index][0]; 585 prev_y = s->last_pic.motion_val[0][mot_index][1]; 586 prev_ref = s->last_pic.ref_index[0][4 * mb_xy]; 587 } else { 588 prev_x = s->cur_pic.motion_val[0][mot_index][0]; 589 prev_y = s->cur_pic.motion_val[0][mot_index][1]; 590 prev_ref = s->cur_pic.ref_index[0][4 * mb_xy]; 591 } 592 593 /* last MV */ 594 mv_predictor[pred_count][0] = prev_x; 595 mv_predictor[pred_count][1] = prev_y; 596 ref[pred_count] = prev_ref; 597 pred_count++; 598 599skip_last_mv: 600 601 for (j = 0; j < pred_count; j++) { 602 int *linesize = s->cur_pic.f->linesize; 603 int score = 0; 604 uint8_t *src = s->cur_pic.f->data[0] + 605 mb_x * 16 + mb_y * 16 * linesize[0]; 606 607 s->cur_pic.motion_val[0][mot_index][0] = 608 s->mv[0][0][0] = mv_predictor[j][0]; 609 s->cur_pic.motion_val[0][mot_index][1] = 610 s->mv[0][0][1] = mv_predictor[j][1]; 611 612 // predictor intra or otherwise not available 613 if (ref[j] < 0) 614 continue; 615 616 s->decode_mb(s->opaque, ref[j], MV_DIR_FORWARD, 617 MV_TYPE_16X16, &s->mv, mb_x, mb_y, 0, 0); 618 619 if (mb_x > 0 && fixed[mb_xy - 1]) { 620 int k; 621 for (k = 0; k < 16; k++) 622 score += FFABS(src[k * linesize[0] - 1] - 623 src[k * linesize[0]]); 624 } 625 if (mb_x + 1 < mb_width && fixed[mb_xy + 1]) { 626 int k; 627 for (k = 0; k < 16; k++) 628 score += FFABS(src[k * linesize[0] + 15] - 629 src[k * linesize[0] + 16]); 630 } 631 if (mb_y > 0 && fixed[mb_xy - mb_stride]) { 632 int k; 633 for (k = 0; k < 16; k++) 634 score += FFABS(src[k - linesize[0]] - src[k]); 635 } 636 if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride]) { 637 int k; 638 for (k = 0; k < 16; k++) 639 score += FFABS(src[k + linesize[0] * 15] - 640 src[k + linesize[0] * 16]); 641 } 642 643 if (score <= best_score) { // <= will favor the last MV 644 best_score = score; 645 best_pred = j; 646 } 647 } 648 score_sum += best_score; 649 s->mv[0][0][0] = mv_predictor[best_pred][0]; 650 s->mv[0][0][1] = mv_predictor[best_pred][1]; 651 652 for (i = 0; i < mot_step; i++) 653 for (j = 0; j < mot_step; j++) { 654 s->cur_pic.motion_val[0][mot_index + i + j * mot_stride][0] = s->mv[0][0][0]; 655 s->cur_pic.motion_val[0][mot_index + i + j * mot_stride][1] = s->mv[0][0][1]; 656 } 657 658 s->decode_mb(s->opaque, ref[best_pred], MV_DIR_FORWARD, 659 MV_TYPE_16X16, &s->mv, mb_x, mb_y, 0, 0); 660 661 662 if (s->mv[0][0][0] != prev_x || s->mv[0][0][1] != prev_y) { 663 fixed[mb_xy] = MV_CHANGED; 664 changed++; 665 } else 666 fixed[mb_xy] = MV_UNCHANGED; 667 } 668 } 669 } 670 671 if (none_left) 672 return; 673 674 for (i = 0; i < s->mb_num; i++) { 675 int mb_xy = s->mb_index2xy[i]; 676 if (fixed[mb_xy]) 677 fixed[mb_xy] = MV_FROZEN; 678 } 679 } 680} 681 682static int is_intra_more_likely(ERContext *s) 683{ 684 int is_intra_likely, i, j, undamaged_count, skip_amount, mb_x, mb_y; 685 686 if (!s->last_pic.f || !s->last_pic.f->data[0]) 687 return 1; // no previous frame available -> use spatial prediction 688 689 if (s->avctx->error_concealment & FF_EC_FAVOR_INTER) 690 return 0; 691 692 undamaged_count = 0; 693 for (i = 0; i < s->mb_num; i++) { 694 const int mb_xy = s->mb_index2xy[i]; 695 const int error = s->error_status_table[mb_xy]; 696 if (!((error & ER_DC_ERROR) && (error & ER_MV_ERROR))) 697 undamaged_count++; 698 } 699 700 if (s->avctx->codec_id == AV_CODEC_ID_H264 && s->ref_count <= 0) 701 return 1; 702 703 if (undamaged_count < 5) 704 return 0; // almost all MBs damaged -> use temporal prediction 705 706 // prevent dsp.sad() check, that requires access to the image 707 if (CONFIG_XVMC && 708 s->avctx->hwaccel && s->avctx->hwaccel->decode_mb && 709 s->cur_pic.f->pict_type == AV_PICTURE_TYPE_I) 710 return 1; 711 712 skip_amount = FFMAX(undamaged_count / 50, 1); // check only up to 50 MBs 713 is_intra_likely = 0; 714 715 j = 0; 716 for (mb_y = 0; mb_y < s->mb_height - 1; mb_y++) { 717 for (mb_x = 0; mb_x < s->mb_width; mb_x++) { 718 int error; 719 const int mb_xy = mb_x + mb_y * s->mb_stride; 720 721 error = s->error_status_table[mb_xy]; 722 if ((error & ER_DC_ERROR) && (error & ER_MV_ERROR)) 723 continue; // skip damaged 724 725 j++; 726 // skip a few to speed things up 727 if ((j % skip_amount) != 0) 728 continue; 729 730 if (s->cur_pic.f->pict_type == AV_PICTURE_TYPE_I) { 731 int *linesize = s->cur_pic.f->linesize; 732 uint8_t *mb_ptr = s->cur_pic.f->data[0] + 733 mb_x * 16 + mb_y * 16 * linesize[0]; 734 uint8_t *last_mb_ptr = s->last_pic.f->data[0] + 735 mb_x * 16 + mb_y * 16 * linesize[0]; 736 737 if (s->avctx->codec_id == AV_CODEC_ID_H264) { 738 // FIXME 739 } else { 740 ff_thread_await_progress(s->last_pic.tf, mb_y, 0); 741 } 742 is_intra_likely += s->dsp->sad[0](NULL, last_mb_ptr, mb_ptr, 743 linesize[0], 16); 744 // FIXME need await_progress() here 745 is_intra_likely -= s->dsp->sad[0](NULL, last_mb_ptr, 746 last_mb_ptr + linesize[0] * 16, 747 linesize[0], 16); 748 } else { 749 if (IS_INTRA(s->cur_pic.mb_type[mb_xy])) 750 is_intra_likely++; 751 else 752 is_intra_likely--; 753 } 754 } 755 } 756// av_log(NULL, AV_LOG_ERROR, "is_intra_likely: %d type:%d\n", is_intra_likely, s->pict_type); 757 return is_intra_likely > 0; 758} 759 760void ff_er_frame_start(ERContext *s) 761{ 762 if (!s->avctx->error_concealment) 763 return; 764 765 memset(s->error_status_table, ER_MB_ERROR | VP_START | ER_MB_END, 766 s->mb_stride * s->mb_height * sizeof(uint8_t)); 767 s->error_count = 3 * s->mb_num; 768 s->error_occurred = 0; 769} 770 771static int er_supported(ERContext *s) 772{ 773 if(s->avctx->hwaccel && s->avctx->hwaccel->decode_slice || 774 s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU || 775 !s->cur_pic.f || 776 s->cur_pic.field_picture 777 ) 778 return 0; 779 return 1; 780} 781 782/** 783 * Add a slice. 784 * @param endx x component of the last macroblock, can be -1 785 * for the last of the previous line 786 * @param status the status at the end (ER_MV_END, ER_AC_ERROR, ...), it is 787 * assumed that no earlier end or error of the same type occurred 788 */ 789void ff_er_add_slice(ERContext *s, int startx, int starty, 790 int endx, int endy, int status) 791{ 792 const int start_i = av_clip(startx + starty * s->mb_width, 0, s->mb_num - 1); 793 const int end_i = av_clip(endx + endy * s->mb_width, 0, s->mb_num); 794 const int start_xy = s->mb_index2xy[start_i]; 795 const int end_xy = s->mb_index2xy[end_i]; 796 int mask = -1; 797 798 if (s->avctx->hwaccel && s->avctx->hwaccel->decode_slice) 799 return; 800 801 if (start_i > end_i || start_xy > end_xy) { 802 av_log(s->avctx, AV_LOG_ERROR, 803 "internal error, slice end before start\n"); 804 return; 805 } 806 807 if (!s->avctx->error_concealment) 808 return; 809 810 mask &= ~VP_START; 811 if (status & (ER_AC_ERROR | ER_AC_END)) { 812 mask &= ~(ER_AC_ERROR | ER_AC_END); 813 s->error_count -= end_i - start_i + 1; 814 } 815 if (status & (ER_DC_ERROR | ER_DC_END)) { 816 mask &= ~(ER_DC_ERROR | ER_DC_END); 817 s->error_count -= end_i - start_i + 1; 818 } 819 if (status & (ER_MV_ERROR | ER_MV_END)) { 820 mask &= ~(ER_MV_ERROR | ER_MV_END); 821 s->error_count -= end_i - start_i + 1; 822 } 823 824 if (status & ER_MB_ERROR) { 825 s->error_occurred = 1; 826 s->error_count = INT_MAX; 827 } 828 829 if (mask == ~0x7F) { 830 memset(&s->error_status_table[start_xy], 0, 831 (end_xy - start_xy) * sizeof(uint8_t)); 832 } else { 833 int i; 834 for (i = start_xy; i < end_xy; i++) 835 s->error_status_table[i] &= mask; 836 } 837 838 if (end_i == s->mb_num) 839 s->error_count = INT_MAX; 840 else { 841 s->error_status_table[end_xy] &= mask; 842 s->error_status_table[end_xy] |= status; 843 } 844 845 s->error_status_table[start_xy] |= VP_START; 846 847 if (start_xy > 0 && !(s->avctx->active_thread_type & FF_THREAD_SLICE) && 848 er_supported(s) && s->avctx->skip_top * s->mb_width < start_i) { 849 int prev_status = s->error_status_table[s->mb_index2xy[start_i - 1]]; 850 851 prev_status &= ~ VP_START; 852 if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END)) { 853 s->error_occurred = 1; 854 s->error_count = INT_MAX; 855 } 856 } 857} 858 859void ff_er_frame_end(ERContext *s) 860{ 861 int *linesize = s->cur_pic.f->linesize; 862 int i, mb_x, mb_y, error, error_type, dc_error, mv_error, ac_error; 863 int distance; 864 int threshold_part[4] = { 100, 100, 100 }; 865 int threshold = 50; 866 int is_intra_likely; 867 int size = s->b8_stride * 2 * s->mb_height; 868 869 /* We do not support ER of field pictures yet, 870 * though it should not crash if enabled. */ 871 if (!s->avctx->error_concealment || s->error_count == 0 || 872 s->avctx->lowres || 873 !er_supported(s) || 874 s->error_count == 3 * s->mb_width * 875 (s->avctx->skip_top + s->avctx->skip_bottom)) { 876 return; 877 } 878 for (mb_x = 0; mb_x < s->mb_width; mb_x++) { 879 int status = s->error_status_table[mb_x + (s->mb_height - 1) * s->mb_stride]; 880 if (status != 0x7F) 881 break; 882 } 883 884 if ( mb_x == s->mb_width 885 && s->avctx->codec_id == AV_CODEC_ID_MPEG2VIDEO 886 && (s->avctx->height&16) 887 && s->error_count == 3 * s->mb_width * (s->avctx->skip_top + s->avctx->skip_bottom + 1) 888 ) { 889 av_log(s->avctx, AV_LOG_DEBUG, "ignoring last missing slice\n"); 890 return; 891 } 892 893 if (s->last_pic.f) { 894 if (s->last_pic.f->width != s->cur_pic.f->width || 895 s->last_pic.f->height != s->cur_pic.f->height || 896 s->last_pic.f->format != s->cur_pic.f->format) { 897 av_log(s->avctx, AV_LOG_WARNING, "Cannot use previous picture in error concealment\n"); 898 memset(&s->last_pic, 0, sizeof(s->last_pic)); 899 } 900 } 901 if (s->next_pic.f) { 902 if (s->next_pic.f->width != s->cur_pic.f->width || 903 s->next_pic.f->height != s->cur_pic.f->height || 904 s->next_pic.f->format != s->cur_pic.f->format) { 905 av_log(s->avctx, AV_LOG_WARNING, "Cannot use next picture in error concealment\n"); 906 memset(&s->next_pic, 0, sizeof(s->next_pic)); 907 } 908 } 909 910 if (!s->cur_pic.motion_val[0] || !s->cur_pic.ref_index[0]) { 911 av_log(s->avctx, AV_LOG_ERROR, "Warning MVs not available\n"); 912 913 for (i = 0; i < 2; i++) { 914 s->ref_index_buf[i] = av_buffer_allocz(s->mb_stride * s->mb_height * 4 * sizeof(uint8_t)); 915 s->motion_val_buf[i] = av_buffer_allocz((size + 4) * 2 * sizeof(uint16_t)); 916 if (!s->ref_index_buf[i] || !s->motion_val_buf[i]) 917 break; 918 s->cur_pic.ref_index[i] = s->ref_index_buf[i]->data; 919 s->cur_pic.motion_val[i] = (int16_t (*)[2])s->motion_val_buf[i]->data + 4; 920 } 921 if (i < 2) { 922 for (i = 0; i < 2; i++) { 923 av_buffer_unref(&s->ref_index_buf[i]); 924 av_buffer_unref(&s->motion_val_buf[i]); 925 s->cur_pic.ref_index[i] = NULL; 926 s->cur_pic.motion_val[i] = NULL; 927 } 928 return; 929 } 930 } 931 932 if (s->avctx->debug & FF_DEBUG_ER) { 933 for (mb_y = 0; mb_y < s->mb_height; mb_y++) { 934 for (mb_x = 0; mb_x < s->mb_width; mb_x++) { 935 int status = s->error_status_table[mb_x + mb_y * s->mb_stride]; 936 937 av_log(s->avctx, AV_LOG_DEBUG, "%2X ", status); 938 } 939 av_log(s->avctx, AV_LOG_DEBUG, "\n"); 940 } 941 } 942 943#if 1 944 /* handle overlapping slices */ 945 for (error_type = 1; error_type <= 3; error_type++) { 946 int end_ok = 0; 947 948 for (i = s->mb_num - 1; i >= 0; i--) { 949 const int mb_xy = s->mb_index2xy[i]; 950 int error = s->error_status_table[mb_xy]; 951 952 if (error & (1 << error_type)) 953 end_ok = 1; 954 if (error & (8 << error_type)) 955 end_ok = 1; 956 957 if (!end_ok) 958 s->error_status_table[mb_xy] |= 1 << error_type; 959 960 if (error & VP_START) 961 end_ok = 0; 962 } 963 } 964#endif 965#if 1 966 /* handle slices with partitions of different length */ 967 if (s->partitioned_frame) { 968 int end_ok = 0; 969 970 for (i = s->mb_num - 1; i >= 0; i--) { 971 const int mb_xy = s->mb_index2xy[i]; 972 int error = s->error_status_table[mb_xy]; 973 974 if (error & ER_AC_END) 975 end_ok = 0; 976 if ((error & ER_MV_END) || 977 (error & ER_DC_END) || 978 (error & ER_AC_ERROR)) 979 end_ok = 1; 980 981 if (!end_ok) 982 s->error_status_table[mb_xy]|= ER_AC_ERROR; 983 984 if (error & VP_START) 985 end_ok = 0; 986 } 987 } 988#endif 989 /* handle missing slices */ 990 if (s->avctx->err_recognition & AV_EF_EXPLODE) { 991 int end_ok = 1; 992 993 // FIXME + 100 hack 994 for (i = s->mb_num - 2; i >= s->mb_width + 100; i--) { 995 const int mb_xy = s->mb_index2xy[i]; 996 int error1 = s->error_status_table[mb_xy]; 997 int error2 = s->error_status_table[s->mb_index2xy[i + 1]]; 998 999 if (error1 & VP_START) 1000 end_ok = 1; 1001 1002 if (error2 == (VP_START | ER_MB_ERROR | ER_MB_END) && 1003 error1 != (VP_START | ER_MB_ERROR | ER_MB_END) && 1004 ((error1 & ER_AC_END) || (error1 & ER_DC_END) || 1005 (error1 & ER_MV_END))) { 1006 // end & uninit 1007 end_ok = 0; 1008 } 1009 1010 if (!end_ok) 1011 s->error_status_table[mb_xy] |= ER_MB_ERROR; 1012 } 1013 } 1014 1015#if 1 1016 /* backward mark errors */ 1017 distance = 9999999; 1018 for (error_type = 1; error_type <= 3; error_type++) { 1019 for (i = s->mb_num - 1; i >= 0; i--) { 1020 const int mb_xy = s->mb_index2xy[i]; 1021 int error = s->error_status_table[mb_xy]; 1022 1023 if (!s->mbskip_table[mb_xy]) // FIXME partition specific 1024 distance++; 1025 if (error & (1 << error_type)) 1026 distance = 0; 1027 1028 if (s->partitioned_frame) { 1029 if (distance < threshold_part[error_type - 1]) 1030 s->error_status_table[mb_xy] |= 1 << error_type; 1031 } else { 1032 if (distance < threshold) 1033 s->error_status_table[mb_xy] |= 1 << error_type; 1034 } 1035 1036 if (error & VP_START) 1037 distance = 9999999; 1038 } 1039 } 1040#endif 1041 1042 /* forward mark errors */ 1043 error = 0; 1044 for (i = 0; i < s->mb_num; i++) { 1045 const int mb_xy = s->mb_index2xy[i]; 1046 int old_error = s->error_status_table[mb_xy]; 1047 1048 if (old_error & VP_START) { 1049 error = old_error & ER_MB_ERROR; 1050 } else { 1051 error |= old_error & ER_MB_ERROR; 1052 s->error_status_table[mb_xy] |= error; 1053 } 1054 } 1055#if 1 1056 /* handle not partitioned case */ 1057 if (!s->partitioned_frame) { 1058 for (i = 0; i < s->mb_num; i++) { 1059 const int mb_xy = s->mb_index2xy[i]; 1060 error = s->error_status_table[mb_xy]; 1061 if (error & ER_MB_ERROR) 1062 error |= ER_MB_ERROR; 1063 s->error_status_table[mb_xy] = error; 1064 } 1065 } 1066#endif 1067 1068 dc_error = ac_error = mv_error = 0; 1069 for (i = 0; i < s->mb_num; i++) { 1070 const int mb_xy = s->mb_index2xy[i]; 1071 error = s->error_status_table[mb_xy]; 1072 if (error & ER_DC_ERROR) 1073 dc_error++; 1074 if (error & ER_AC_ERROR) 1075 ac_error++; 1076 if (error & ER_MV_ERROR) 1077 mv_error++; 1078 } 1079 av_log(s->avctx, AV_LOG_INFO, "concealing %d DC, %d AC, %d MV errors in %c frame\n", 1080 dc_error, ac_error, mv_error, av_get_picture_type_char(s->cur_pic.f->pict_type)); 1081 1082 is_intra_likely = is_intra_more_likely(s); 1083 1084 /* set unknown mb-type to most likely */ 1085 for (i = 0; i < s->mb_num; i++) { 1086 const int mb_xy = s->mb_index2xy[i]; 1087 error = s->error_status_table[mb_xy]; 1088 if (!((error & ER_DC_ERROR) && (error & ER_MV_ERROR))) 1089 continue; 1090 1091 if (is_intra_likely) 1092 s->cur_pic.mb_type[mb_xy] = MB_TYPE_INTRA4x4; 1093 else 1094 s->cur_pic.mb_type[mb_xy] = MB_TYPE_16x16 | MB_TYPE_L0; 1095 } 1096 1097 // change inter to intra blocks if no reference frames are available 1098 if (!(s->last_pic.f && s->last_pic.f->data[0]) && 1099 !(s->next_pic.f && s->next_pic.f->data[0])) 1100 for (i = 0; i < s->mb_num; i++) { 1101 const int mb_xy = s->mb_index2xy[i]; 1102 if (!IS_INTRA(s->cur_pic.mb_type[mb_xy])) 1103 s->cur_pic.mb_type[mb_xy] = MB_TYPE_INTRA4x4; 1104 } 1105 1106 /* handle inter blocks with damaged AC */ 1107 for (mb_y = 0; mb_y < s->mb_height; mb_y++) { 1108 for (mb_x = 0; mb_x < s->mb_width; mb_x++) { 1109 const int mb_xy = mb_x + mb_y * s->mb_stride; 1110 const int mb_type = s->cur_pic.mb_type[mb_xy]; 1111 const int dir = !(s->last_pic.f && s->last_pic.f->data[0]); 1112 const int mv_dir = dir ? MV_DIR_BACKWARD : MV_DIR_FORWARD; 1113 int mv_type; 1114 1115 error = s->error_status_table[mb_xy]; 1116 1117 if (IS_INTRA(mb_type)) 1118 continue; // intra 1119 if (error & ER_MV_ERROR) 1120 continue; // inter with damaged MV 1121 if (!(error & ER_AC_ERROR)) 1122 continue; // undamaged inter 1123 1124 if (IS_8X8(mb_type)) { 1125 int mb_index = mb_x * 2 + mb_y * 2 * s->b8_stride; 1126 int j; 1127 mv_type = MV_TYPE_8X8; 1128 for (j = 0; j < 4; j++) { 1129 s->mv[0][j][0] = s->cur_pic.motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][0]; 1130 s->mv[0][j][1] = s->cur_pic.motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][1]; 1131 } 1132 } else { 1133 mv_type = MV_TYPE_16X16; 1134 s->mv[0][0][0] = s->cur_pic.motion_val[dir][mb_x * 2 + mb_y * 2 * s->b8_stride][0]; 1135 s->mv[0][0][1] = s->cur_pic.motion_val[dir][mb_x * 2 + mb_y * 2 * s->b8_stride][1]; 1136 } 1137 1138 s->decode_mb(s->opaque, 0 /* FIXME h264 partitioned slices need this set */, 1139 mv_dir, mv_type, &s->mv, mb_x, mb_y, 0, 0); 1140 } 1141 } 1142 1143 /* guess MVs */ 1144 if (s->cur_pic.f->pict_type == AV_PICTURE_TYPE_B) { 1145 for (mb_y = 0; mb_y < s->mb_height; mb_y++) { 1146 for (mb_x = 0; mb_x < s->mb_width; mb_x++) { 1147 int xy = mb_x * 2 + mb_y * 2 * s->b8_stride; 1148 const int mb_xy = mb_x + mb_y * s->mb_stride; 1149 const int mb_type = s->cur_pic.mb_type[mb_xy]; 1150 int mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD; 1151 1152 error = s->error_status_table[mb_xy]; 1153 1154 if (IS_INTRA(mb_type)) 1155 continue; 1156 if (!(error & ER_MV_ERROR)) 1157 continue; // inter with undamaged MV 1158 if (!(error & ER_AC_ERROR)) 1159 continue; // undamaged inter 1160 1161 if (!(s->last_pic.f && s->last_pic.f->data[0])) 1162 mv_dir &= ~MV_DIR_FORWARD; 1163 if (!(s->next_pic.f && s->next_pic.f->data[0])) 1164 mv_dir &= ~MV_DIR_BACKWARD; 1165 1166 if (s->pp_time) { 1167 int time_pp = s->pp_time; 1168 int time_pb = s->pb_time; 1169 1170 av_assert0(s->avctx->codec_id != AV_CODEC_ID_H264); 1171 ff_thread_await_progress(s->next_pic.tf, mb_y, 0); 1172 1173 s->mv[0][0][0] = s->next_pic.motion_val[0][xy][0] * time_pb / time_pp; 1174 s->mv[0][0][1] = s->next_pic.motion_val[0][xy][1] * time_pb / time_pp; 1175 s->mv[1][0][0] = s->next_pic.motion_val[0][xy][0] * (time_pb - time_pp) / time_pp; 1176 s->mv[1][0][1] = s->next_pic.motion_val[0][xy][1] * (time_pb - time_pp) / time_pp; 1177 } else { 1178 s->mv[0][0][0] = 0; 1179 s->mv[0][0][1] = 0; 1180 s->mv[1][0][0] = 0; 1181 s->mv[1][0][1] = 0; 1182 } 1183 1184 s->decode_mb(s->opaque, 0, mv_dir, MV_TYPE_16X16, &s->mv, 1185 mb_x, mb_y, 0, 0); 1186 } 1187 } 1188 } else 1189 guess_mv(s); 1190 1191 /* the filters below manipulate raw image, skip them */ 1192 if (CONFIG_XVMC && s->avctx->hwaccel && s->avctx->hwaccel->decode_mb) 1193 goto ec_clean; 1194 /* fill DC for inter blocks */ 1195 for (mb_y = 0; mb_y < s->mb_height; mb_y++) { 1196 for (mb_x = 0; mb_x < s->mb_width; mb_x++) { 1197 int dc, dcu, dcv, y, n; 1198 int16_t *dc_ptr; 1199 uint8_t *dest_y, *dest_cb, *dest_cr; 1200 const int mb_xy = mb_x + mb_y * s->mb_stride; 1201 const int mb_type = s->cur_pic.mb_type[mb_xy]; 1202 1203 error = s->error_status_table[mb_xy]; 1204 1205 if (IS_INTRA(mb_type) && s->partitioned_frame) 1206 continue; 1207 // if (error & ER_MV_ERROR) 1208 // continue; // inter data damaged FIXME is this good? 1209 1210 dest_y = s->cur_pic.f->data[0] + mb_x * 16 + mb_y * 16 * linesize[0]; 1211 dest_cb = s->cur_pic.f->data[1] + mb_x * 8 + mb_y * 8 * linesize[1]; 1212 dest_cr = s->cur_pic.f->data[2] + mb_x * 8 + mb_y * 8 * linesize[2]; 1213 1214 dc_ptr = &s->dc_val[0][mb_x * 2 + mb_y * 2 * s->b8_stride]; 1215 for (n = 0; n < 4; n++) { 1216 dc = 0; 1217 for (y = 0; y < 8; y++) { 1218 int x; 1219 for (x = 0; x < 8; x++) 1220 dc += dest_y[x + (n & 1) * 8 + 1221 (y + (n >> 1) * 8) * linesize[0]]; 1222 } 1223 dc_ptr[(n & 1) + (n >> 1) * s->b8_stride] = (dc + 4) >> 3; 1224 } 1225 1226 dcu = dcv = 0; 1227 for (y = 0; y < 8; y++) { 1228 int x; 1229 for (x = 0; x < 8; x++) { 1230 dcu += dest_cb[x + y * linesize[1]]; 1231 dcv += dest_cr[x + y * linesize[2]]; 1232 } 1233 } 1234 s->dc_val[1][mb_x + mb_y * s->mb_stride] = (dcu + 4) >> 3; 1235 s->dc_val[2][mb_x + mb_y * s->mb_stride] = (dcv + 4) >> 3; 1236 } 1237 } 1238#if 1 1239 /* guess DC for damaged blocks */ 1240 guess_dc(s, s->dc_val[0], s->mb_width*2, s->mb_height*2, s->b8_stride, 1); 1241 guess_dc(s, s->dc_val[1], s->mb_width , s->mb_height , s->mb_stride, 0); 1242 guess_dc(s, s->dc_val[2], s->mb_width , s->mb_height , s->mb_stride, 0); 1243#endif 1244 1245 /* filter luma DC */ 1246 filter181(s->dc_val[0], s->mb_width * 2, s->mb_height * 2, s->b8_stride); 1247 1248#if 1 1249 /* render DC only intra */ 1250 for (mb_y = 0; mb_y < s->mb_height; mb_y++) { 1251 for (mb_x = 0; mb_x < s->mb_width; mb_x++) { 1252 uint8_t *dest_y, *dest_cb, *dest_cr; 1253 const int mb_xy = mb_x + mb_y * s->mb_stride; 1254 const int mb_type = s->cur_pic.mb_type[mb_xy]; 1255 1256 error = s->error_status_table[mb_xy]; 1257 1258 if (IS_INTER(mb_type)) 1259 continue; 1260 if (!(error & ER_AC_ERROR)) 1261 continue; // undamaged 1262 1263 dest_y = s->cur_pic.f->data[0] + mb_x * 16 + mb_y * 16 * linesize[0]; 1264 dest_cb = s->cur_pic.f->data[1] + mb_x * 8 + mb_y * 8 * linesize[1]; 1265 dest_cr = s->cur_pic.f->data[2] + mb_x * 8 + mb_y * 8 * linesize[2]; 1266 1267 put_dc(s, dest_y, dest_cb, dest_cr, mb_x, mb_y); 1268 } 1269 } 1270#endif 1271 1272 if (s->avctx->error_concealment & FF_EC_DEBLOCK) { 1273 /* filter horizontal block boundaries */ 1274 h_block_filter(s, s->cur_pic.f->data[0], s->mb_width * 2, 1275 s->mb_height * 2, linesize[0], 1); 1276 h_block_filter(s, s->cur_pic.f->data[1], s->mb_width, 1277 s->mb_height, linesize[1], 0); 1278 h_block_filter(s, s->cur_pic.f->data[2], s->mb_width, 1279 s->mb_height, linesize[2], 0); 1280 1281 /* filter vertical block boundaries */ 1282 v_block_filter(s, s->cur_pic.f->data[0], s->mb_width * 2, 1283 s->mb_height * 2, linesize[0], 1); 1284 v_block_filter(s, s->cur_pic.f->data[1], s->mb_width, 1285 s->mb_height, linesize[1], 0); 1286 v_block_filter(s, s->cur_pic.f->data[2], s->mb_width, 1287 s->mb_height, linesize[2], 0); 1288 } 1289 1290ec_clean: 1291 /* clean a few tables */ 1292 for (i = 0; i < s->mb_num; i++) { 1293 const int mb_xy = s->mb_index2xy[i]; 1294 int error = s->error_status_table[mb_xy]; 1295 1296 if (s->cur_pic.f->pict_type != AV_PICTURE_TYPE_B && 1297 (error & (ER_DC_ERROR | ER_MV_ERROR | ER_AC_ERROR))) { 1298 s->mbskip_table[mb_xy] = 0; 1299 } 1300 s->mbintra_table[mb_xy] = 1; 1301 } 1302 1303 for (i = 0; i < 2; i++) { 1304 av_buffer_unref(&s->ref_index_buf[i]); 1305 av_buffer_unref(&s->motion_val_buf[i]); 1306 s->cur_pic.ref_index[i] = NULL; 1307 s->cur_pic.motion_val[i] = NULL; 1308 } 1309 1310 memset(&s->cur_pic, 0, sizeof(ERPicture)); 1311 memset(&s->last_pic, 0, sizeof(ERPicture)); 1312 memset(&s->next_pic, 0, sizeof(ERPicture)); 1313} 1314