FFmpeg: libavcodec/error_resilience.c Source File

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libavcodec

error_resilience.c

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1 /*

2 * Error resilience / concealment

3 *

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 */

23 /**

24 * @file

25 * Error resilience / concealment.

26 */

28 #include <limits.h>

30 #include "avcodec.h"

31 #include "error_resilience.h"

32 #include "mpegvideo.h"

33 #include "rectangle.h"

34 #include "thread.h"

36 /**

37 * @param stride the number of MVs to get to the next row

38 * @param mv_step the number of MVs per row or column in a macroblock

39 */

40 static void set_mv_strides(ERContext *s, int *mv_step, int *stride)

41 {

42 if (s->avctx->codec_id == AV_CODEC_ID_H264) {

43 av_assert0(s->quarter_sample);

44 *mv_step = 4;

45 *stride = s->mb_width * 4;

46 } else {

47 *mv_step = 2;

48 *stride = s->b8_stride;

49 }

50 }

52 /**

53 * Replace the current MB with a flat dc-only version.

54 */

55 static void put_dc(ERContext *s, uint8_t *dest_y, uint8_t *dest_cb,

56 uint8_t *dest_cr, int mb_x, int mb_y)

57 {

58 int *linesize = s->cur_pic->f.linesize;

59 int dc, dcu, dcv, y, i;

60 for (i = 0; i < 4; i++) {

61 dc = s->dc_val[0][mb_x * 2 + (i & 1) + (mb_y * 2 + (i >> 1)) * s->b8_stride];

62 if (dc < 0)

63 dc = 0;

64 else if (dc > 2040)

65 dc = 2040;

66 for (y = 0; y < 8; y++) {

67 int x;

68 for (x = 0; x < 8; x++)

69 dest_y[x + (i & 1) * 8 + (y + (i >> 1) * 8) * linesize[0]] = dc / 8;

70 }

71 }

72 dcu = s->dc_val[1][mb_x + mb_y * s->mb_stride];

73 dcv = s->dc_val[2][mb_x + mb_y * s->mb_stride];

74 if (dcu < 0)

75 dcu = 0;

76 else if (dcu > 2040)

77 dcu = 2040;

78 if (dcv < 0)

79 dcv = 0;

80 else if (dcv > 2040)

81 dcv = 2040;

82 for (y = 0; y < 8; y++) {

83 int x;

84 for (x = 0; x < 8; x++) {

85 dest_cb[x + y * linesize[1]] = dcu / 8;

86 dest_cr[x + y * linesize[2]] = dcv / 8;

87 }

88 }

89 }

91 static void filter181(int16_t *data, int width, int height, int stride)

92 {

93 int x, y;

95 /* horizontal filter */

96 for (y = 1; y < height - 1; y++) {

97 int prev_dc = data[0 + y * stride];

99 for (x = 1; x < width - 1; x++) {

100 int dc;

101 dc = -prev_dc +

102 data[x + y * stride] * 8 -

103 data[x + 1 + y * stride];

104 dc = (dc * 10923 + 32768) >> 16;

105 prev_dc = data[x + y * stride];

106 data[x + y * stride] = dc;

107 }

108 }

109

110 /* vertical filter */

111 for (x = 1; x < width - 1; x++) {

112 int prev_dc = data[x];

113

114 for (y = 1; y < height - 1; y++) {

115 int dc;

116

117 dc = -prev_dc +

118 data[x + y * stride] * 8 -

119 data[x + (y + 1) * stride];

120 dc = (dc * 10923 + 32768) >> 16;

121 prev_dc = data[x + y * stride];

122 data[x + y * stride] = dc;

123 }

124 }

125 }

126

127 /**

128 * guess the dc of blocks which do not have an undamaged dc

129 * @param w width in 8 pixel blocks

130 * @param h height in 8 pixel blocks

131 */

132 static void guess_dc(ERContext *s, int16_t *dc, int w,

133 int h, int stride, int is_luma)

134 {

135 int b_x, b_y;

136 int16_t (*col )[4] = av_malloc(stride*h*sizeof( int16_t)*4);

137 uint32_t (*dist)[4] = av_malloc(stride*h*sizeof(uint32_t)*4);

138

139 if(!col || !dist) {

140 av_log(s->avctx, AV_LOG_ERROR, "guess_dc() is out of memory\n");

141 goto fail;

142 }

143

144 for(b_y=0; b_y<h; b_y++){

145 int color= 1024;

146 int distance= -1;

147 for(b_x=0; b_x<w; b_x++){

148 int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;

149 int error_j= s->error_status_table[mb_index_j];

150 int intra_j = IS_INTRA(s->cur_pic->mb_type[mb_index_j]);

151 if(intra_j==0 || !(error_j&ER_DC_ERROR)){

152 color= dc[b_x + b_y*stride];

153 distance= b_x;

154 }

155 col [b_x + b_y*stride][1]= color;

156 dist[b_x + b_y*stride][1]= distance >= 0 ? b_x-distance : 9999;

157 }

158 color= 1024;

159 distance= -1;

160 for(b_x=w-1; b_x>=0; b_x--){

161 int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;

162 int error_j= s->error_status_table[mb_index_j];

163 int intra_j = IS_INTRA(s->cur_pic->mb_type[mb_index_j]);

164 if(intra_j==0 || !(error_j&ER_DC_ERROR)){

165 color= dc[b_x + b_y*stride];

166 distance= b_x;

167 }

168 col [b_x + b_y*stride][0]= color;

169 dist[b_x + b_y*stride][0]= distance >= 0 ? distance-b_x : 9999;

170 }

171 }

172 for(b_x=0; b_x<w; b_x++){

173 int color= 1024;

174 int distance= -1;

175 for(b_y=0; b_y<h; b_y++){

176 int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;

177 int error_j= s->error_status_table[mb_index_j];

178 int intra_j = IS_INTRA(s->cur_pic->mb_type[mb_index_j]);

179 if(intra_j==0 || !(error_j&ER_DC_ERROR)){

180 color= dc[b_x + b_y*stride];

181 distance= b_y;

182 }

183 col [b_x + b_y*stride][3]= color;

184 dist[b_x + b_y*stride][3]= distance >= 0 ? b_y-distance : 9999;

185 }

186 color= 1024;

187 distance= -1;

188 for(b_y=h-1; b_y>=0; b_y--){

189 int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;

190 int error_j= s->error_status_table[mb_index_j];

191 int intra_j = IS_INTRA(s->cur_pic->mb_type[mb_index_j]);

192 if(intra_j==0 || !(error_j&ER_DC_ERROR)){

193 color= dc[b_x + b_y*stride];

194 distance= b_y;

195 }

196 col [b_x + b_y*stride][2]= color;

197 dist[b_x + b_y*stride][2]= distance >= 0 ? distance-b_y : 9999;

198 }

199 }

200

201 for (b_y = 0; b_y < h; b_y++) {

202 for (b_x = 0; b_x < w; b_x++) {

203 int mb_index, error, j;

204 int64_t guess, weight_sum;

205 mb_index = (b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride;

206 error = s->error_status_table[mb_index];

207

208 if (IS_INTER(s->cur_pic->mb_type[mb_index]))

209 continue; // inter

210 if (!(error & ER_DC_ERROR))

211 continue; // dc-ok

212

213 weight_sum = 0;

214 guess = 0;

215 for (j = 0; j < 4; j++) {

216 int64_t weight = 256 * 256 * 256 * 16 / FFMAX(dist[b_x + b_y*stride][j], 1);

217 guess += weight*(int64_t)col[b_x + b_y*stride][j];

218 weight_sum += weight;

219 }

220 guess = (guess + weight_sum / 2) / weight_sum;

221 dc[b_x + b_y * stride] = guess;

222 }

223 }

224

225 fail:

226 av_freep(&col);

227 av_freep(&dist);

228 }

229

230 /**

231 * simple horizontal deblocking filter used for error resilience

232 * @param w width in 8 pixel blocks

233 * @param h height in 8 pixel blocks

234 */

235 static void h_block_filter(ERContext *s, uint8_t *dst, int w,

236 int h, int stride, int is_luma)

237 {

238 int b_x, b_y, mvx_stride, mvy_stride;

239 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;

240 set_mv_strides(s, &mvx_stride, &mvy_stride);

241 mvx_stride >>= is_luma;

242 mvy_stride *= mvx_stride;

243

244 for (b_y = 0; b_y < h; b_y++) {

245 for (b_x = 0; b_x < w - 1; b_x++) {

246 int y;

247 int left_status = s->error_status_table[( b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride];

248 int right_status = s->error_status_table[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride];

249 int left_intra = IS_INTRA(s->cur_pic->mb_type[( b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride]);

250 int right_intra = IS_INTRA(s->cur_pic->mb_type[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride]);

251 int left_damage = left_status & ER_MB_ERROR;

252 int right_damage = right_status & ER_MB_ERROR;

253 int offset = b_x * 8 + b_y * stride * 8;

254 int16_t *left_mv = s->cur_pic->motion_val[0][mvy_stride * b_y + mvx_stride * b_x];

255 int16_t *right_mv = s->cur_pic->motion_val[0][mvy_stride * b_y + mvx_stride * (b_x + 1)];

256 if (!(left_damage || right_damage))

257 continue; // both undamaged

258 if ((!left_intra) && (!right_intra) &&

259 FFABS(left_mv[0] - right_mv[0]) +

260 FFABS(left_mv[1] + right_mv[1]) < 2)

261 continue;

262

263 for (y = 0; y < 8; y++) {

264 int a, b, c, d;

265

266 a = dst[offset + 7 + y * stride] - dst[offset + 6 + y * stride];

267 b = dst[offset + 8 + y * stride] - dst[offset + 7 + y * stride];

268 c = dst[offset + 9 + y * stride] - dst[offset + 8 + y * stride];

269

270 d = FFABS(b) - ((FFABS(a) + FFABS(c) + 1) >> 1);

271 d = FFMAX(d, 0);

272 if (b < 0)

273 d = -d;

274

275 if (d == 0)

276 continue;

277

278 if (!(left_damage && right_damage))

279 d = d * 16 / 9;

280

281 if (left_damage) {

282 dst[offset + 7 + y * stride] = cm[dst[offset + 7 + y * stride] + ((d * 7) >> 4)];

283 dst[offset + 6 + y * stride] = cm[dst[offset + 6 + y * stride] + ((d * 5) >> 4)];

284 dst[offset + 5 + y * stride] = cm[dst[offset + 5 + y * stride] + ((d * 3) >> 4)];

285 dst[offset + 4 + y * stride] = cm[dst[offset + 4 + y * stride] + ((d * 1) >> 4)];

286 }

287 if (right_damage) {

288 dst[offset + 8 + y * stride] = cm[dst[offset + 8 + y * stride] - ((d * 7) >> 4)];

289 dst[offset + 9 + y * stride] = cm[dst[offset + 9 + y * stride] - ((d * 5) >> 4)];

290 dst[offset + 10+ y * stride] = cm[dst[offset + 10 + y * stride] - ((d * 3) >> 4)];

291 dst[offset + 11+ y * stride] = cm[dst[offset + 11 + y * stride] - ((d * 1) >> 4)];

292 }

293 }

294 }

295 }

296 }

297

298 /**

299 * simple vertical deblocking filter used for error resilience

300 * @param w width in 8 pixel blocks

301 * @param h height in 8 pixel blocks

302 */

303 static void v_block_filter(ERContext *s, uint8_t *dst, int w, int h,

304 int stride, int is_luma)

305 {

306 int b_x, b_y, mvx_stride, mvy_stride;

307 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;

308 set_mv_strides(s, &mvx_stride, &mvy_stride);

309 mvx_stride >>= is_luma;

310 mvy_stride *= mvx_stride;

311

312 for (b_y = 0; b_y < h - 1; b_y++) {

313 for (b_x = 0; b_x < w; b_x++) {

314 int x;

315 int top_status = s->error_status_table[(b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride];

316 int bottom_status = s->error_status_table[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride];

317 int top_intra = IS_INTRA(s->cur_pic->mb_type[(b_x >> is_luma) + ( b_y >> is_luma) * s->mb_stride]);

318 int bottom_intra = IS_INTRA(s->cur_pic->mb_type[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride]);

319 int top_damage = top_status & ER_MB_ERROR;

320 int bottom_damage = bottom_status & ER_MB_ERROR;

321 int offset = b_x * 8 + b_y * stride * 8;

322

323 int16_t *top_mv = s->cur_pic->motion_val[0][mvy_stride * b_y + mvx_stride * b_x];

324 int16_t *bottom_mv = s->cur_pic->motion_val[0][mvy_stride * (b_y + 1) + mvx_stride * b_x];

325

326 if (!(top_damage || bottom_damage))

327 continue; // both undamaged

328

329 if ((!top_intra) && (!bottom_intra) &&

330 FFABS(top_mv[0] - bottom_mv[0]) +

331 FFABS(top_mv[1] + bottom_mv[1]) < 2)

332 continue;

333

334 for (x = 0; x < 8; x++) {

335 int a, b, c, d;

336

337 a = dst[offset + x + 7 * stride] - dst[offset + x + 6 * stride];

338 b = dst[offset + x + 8 * stride] - dst[offset + x + 7 * stride];

339 c = dst[offset + x + 9 * stride] - dst[offset + x + 8 * stride];

340

341 d = FFABS(b) - ((FFABS(a) + FFABS(c) + 1) >> 1);

342 d = FFMAX(d, 0);

343 if (b < 0)

344 d = -d;

345

346 if (d == 0)

347 continue;

348

349 if (!(top_damage && bottom_damage))

350 d = d * 16 / 9;

351

352 if (top_damage) {

353 dst[offset + x + 7 * stride] = cm[dst[offset + x + 7 * stride] + ((d * 7) >> 4)];

354 dst[offset + x + 6 * stride] = cm[dst[offset + x + 6 * stride] + ((d * 5) >> 4)];

355 dst[offset + x + 5 * stride] = cm[dst[offset + x + 5 * stride] + ((d * 3) >> 4)];

356 dst[offset + x + 4 * stride] = cm[dst[offset + x + 4 * stride] + ((d * 1) >> 4)];

357 }

358 if (bottom_damage) {

359 dst[offset + x + 8 * stride] = cm[dst[offset + x + 8 * stride] - ((d * 7) >> 4)];

360 dst[offset + x + 9 * stride] = cm[dst[offset + x + 9 * stride] - ((d * 5) >> 4)];

361 dst[offset + x + 10 * stride] = cm[dst[offset + x + 10 * stride] - ((d * 3) >> 4)];

362 dst[offset + x + 11 * stride] = cm[dst[offset + x + 11 * stride] - ((d * 1) >> 4)];

363 }

364 }

365 }

366 }

367 }

368

369 static void guess_mv(ERContext *s)

370 {

371 uint8_t *fixed = s->er_temp_buffer;

372 #define MV_FROZEN 3

373 #define MV_CHANGED 2

374 #define MV_UNCHANGED 1

375 const int mb_stride = s->mb_stride;

376 const int mb_width = s->mb_width;

377 const int mb_height = s->mb_height;

378 int i, depth, num_avail;

379 int mb_x, mb_y, mot_step, mot_stride;

380

381 set_mv_strides(s, &mot_step, &mot_stride);

382

383 num_avail = 0;

384 for (i = 0; i < s->mb_num; i++) {

385 const int mb_xy = s->mb_index2xy[i];

386 int f = 0;

387 int error = s->error_status_table[mb_xy];

388

389 if (IS_INTRA(s->cur_pic->mb_type[mb_xy]))

390 f = MV_FROZEN; // intra // FIXME check

391 if (!(error & ER_MV_ERROR))

392 f = MV_FROZEN; // inter with undamaged MV

393

394 fixed[mb_xy] = f;

395 if (f == MV_FROZEN)

396 num_avail++;

397 else if(s->last_pic->f.data[0] && s->last_pic->motion_val[0]){

398 const int mb_y= mb_xy / s->mb_stride;

399 const int mb_x= mb_xy % s->mb_stride;

400 const int mot_index= (mb_x + mb_y*mot_stride) * mot_step;

401 s->cur_pic->motion_val[0][mot_index][0]= s->last_pic->motion_val[0][mot_index][0];

402 s->cur_pic->motion_val[0][mot_index][1]= s->last_pic->motion_val[0][mot_index][1];

403 s->cur_pic->ref_index[0][4*mb_xy] = s->last_pic->ref_index[0][4*mb_xy];

404 }

405 }

406

407 if ((!(s->avctx->error_concealment&FF_EC_GUESS_MVS)) ||

408 num_avail <= mb_width / 2) {

409 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {

410 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {

411 const int mb_xy = mb_x + mb_y * s->mb_stride;

412 int mv_dir = (s->last_pic && s->last_pic->f.data[0]) ? MV_DIR_FORWARD : MV_DIR_BACKWARD;

413

414 if (IS_INTRA(s->cur_pic->mb_type[mb_xy]))

415 continue;

416 if (!(s->error_status_table[mb_xy] & ER_MV_ERROR))

417 continue;

418

419 s->mv[0][0][0] = 0;

420 s->mv[0][0][1] = 0;

421 s->decode_mb(s->opaque, 0, mv_dir, MV_TYPE_16X16, &s->mv,

422 mb_x, mb_y, 0, 0);

423 }

424 }

425 return;

426 }

427

428 for (depth = 0; ; depth++) {

429 int changed, pass, none_left;

430

431 none_left = 1;

432 changed = 1;

433 for (pass = 0; (changed || pass < 2) && pass < 10; pass++) {

434 int mb_x, mb_y;

435 int score_sum = 0;

436

437 changed = 0;

438 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {

439 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {

440 const int mb_xy = mb_x + mb_y * s->mb_stride;

441 int mv_predictor[8][2] = { { 0 } };

442 int ref[8] = { 0 };

443 int pred_count = 0;

444 int j;

445 int best_score = 256 * 256 * 256 * 64;

446 int best_pred = 0;

447 const int mot_index = (mb_x + mb_y * mot_stride) * mot_step;

448 int prev_x, prev_y, prev_ref;

449

450 if ((mb_x ^ mb_y ^ pass) & 1)

451 continue;

452

453 if (fixed[mb_xy] == MV_FROZEN)

454 continue;

455 av_assert1(!IS_INTRA(s->cur_pic->mb_type[mb_xy]));

456 av_assert1(s->last_pic && s->last_pic->f.data[0]);

457

458 j = 0;

459 if (mb_x > 0 && fixed[mb_xy - 1] == MV_FROZEN)

460 j = 1;

461 if (mb_x + 1 < mb_width && fixed[mb_xy + 1] == MV_FROZEN)

462 j = 1;

463 if (mb_y > 0 && fixed[mb_xy - mb_stride] == MV_FROZEN)

464 j = 1;

465 if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] == MV_FROZEN)

466 j = 1;

467 if (j == 0)

468 continue;

469

470 j = 0;

471 if (mb_x > 0 && fixed[mb_xy - 1 ] == MV_CHANGED)

472 j = 1;

473 if (mb_x + 1 < mb_width && fixed[mb_xy + 1 ] == MV_CHANGED)

474 j = 1;

475 if (mb_y > 0 && fixed[mb_xy - mb_stride] == MV_CHANGED)

476 j = 1;

477 if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] == MV_CHANGED)

478 j = 1;

479 if (j == 0 && pass > 1)

480 continue;

481

482 none_left = 0;

483

484 if (mb_x > 0 && fixed[mb_xy - 1]) {

485 mv_predictor[pred_count][0] =

486 s->cur_pic->motion_val[0][mot_index - mot_step][0];

487 mv_predictor[pred_count][1] =

488 s->cur_pic->motion_val[0][mot_index - mot_step][1];

489 ref[pred_count] =

490 s->cur_pic->ref_index[0][4 * (mb_xy - 1)];

491 pred_count++;

492 }

493 if (mb_x + 1 < mb_width && fixed[mb_xy + 1]) {

494 mv_predictor[pred_count][0] =

495 s->cur_pic->motion_val[0][mot_index + mot_step][0];

496 mv_predictor[pred_count][1] =

497 s->cur_pic->motion_val[0][mot_index + mot_step][1];

498 ref[pred_count] =

499 s->cur_pic->ref_index[0][4 * (mb_xy + 1)];

500 pred_count++;

501 }

502 if (mb_y > 0 && fixed[mb_xy - mb_stride]) {

503 mv_predictor[pred_count][0] =

504 s->cur_pic->motion_val[0][mot_index - mot_stride * mot_step][0];

505 mv_predictor[pred_count][1] =

506 s->cur_pic->motion_val[0][mot_index - mot_stride * mot_step][1];

507 ref[pred_count] =

508 s->cur_pic->ref_index[0][4 * (mb_xy - s->mb_stride)];

509 pred_count++;

510 }

511 if (mb_y + 1<mb_height && fixed[mb_xy + mb_stride]) {

512 mv_predictor[pred_count][0] =

513 s->cur_pic->motion_val[0][mot_index + mot_stride * mot_step][0];

514 mv_predictor[pred_count][1] =

515 s->cur_pic->motion_val[0][mot_index + mot_stride * mot_step][1];

516 ref[pred_count] =

517 s->cur_pic->ref_index[0][4 * (mb_xy + s->mb_stride)];

518 pred_count++;

519 }

520 if (pred_count == 0)

521 continue;

522

523 if (pred_count > 1) {

524 int sum_x = 0, sum_y = 0, sum_r = 0;

525 int max_x, max_y, min_x, min_y, max_r, min_r;

526

527 for (j = 0; j < pred_count; j++) {

528 sum_x += mv_predictor[j][0];

529 sum_y += mv_predictor[j][1];

530 sum_r += ref[j];

531 if (j && ref[j] != ref[j - 1])

532 goto skip_mean_and_median;

533 }

534

535 /* mean */

536 mv_predictor[pred_count][0] = sum_x / j;

537 mv_predictor[pred_count][1] = sum_y / j;

538 ref[pred_count] = sum_r / j;

539

540 /* median */

541 if (pred_count >= 3) {

542 min_y = min_x = min_r = 99999;

543 max_y = max_x = max_r = -99999;

544 } else {

545 min_x = min_y = max_x = max_y = min_r = max_r = 0;

546 }

547 for (j = 0; j < pred_count; j++) {

548 max_x = FFMAX(max_x, mv_predictor[j][0]);

549 max_y = FFMAX(max_y, mv_predictor[j][1]);

550 max_r = FFMAX(max_r, ref[j]);

551 min_x = FFMIN(min_x, mv_predictor[j][0]);

552 min_y = FFMIN(min_y, mv_predictor[j][1]);

553 min_r = FFMIN(min_r, ref[j]);

554 }

555 mv_predictor[pred_count + 1][0] = sum_x - max_x - min_x;

556 mv_predictor[pred_count + 1][1] = sum_y - max_y - min_y;

557 ref[pred_count + 1] = sum_r - max_r - min_r;

558

559 if (pred_count == 4) {

560 mv_predictor[pred_count + 1][0] /= 2;

561 mv_predictor[pred_count + 1][1] /= 2;

562 ref[pred_count + 1] /= 2;

563 }

564 pred_count += 2;

565 }

566

567 skip_mean_and_median:

568 /* zero MV */

569 pred_count++;

570

571 if (!fixed[mb_xy] && 0) {

572 if (s->avctx->codec_id == AV_CODEC_ID_H264) {

573 // FIXME

574 } else {

575 ff_thread_await_progress(&s->last_pic->tf,

576 mb_y, 0);

577 }

578 if (!s->last_pic->motion_val[0] ||

579 !s->last_pic->ref_index[0])

580 goto skip_last_mv;

581 prev_x = s->last_pic->motion_val[0][mot_index][0];

582 prev_y = s->last_pic->motion_val[0][mot_index][1];

583 prev_ref = s->last_pic->ref_index[0][4 * mb_xy];

584 } else {

585 prev_x = s->cur_pic->motion_val[0][mot_index][0];

586 prev_y = s->cur_pic->motion_val[0][mot_index][1];

587 prev_ref = s->cur_pic->ref_index[0][4 * mb_xy];

588 }

589

590 /* last MV */

591 mv_predictor[pred_count][0] = prev_x;

592 mv_predictor[pred_count][1] = prev_y;

593 ref[pred_count] = prev_ref;

594 pred_count++;

595

596 skip_last_mv:

597

598 for (j = 0; j < pred_count; j++) {

599 int *linesize = s->cur_pic->f.linesize;

600 int score = 0;

601 uint8_t *src = s->cur_pic->f.data[0] +

602 mb_x * 16 + mb_y * 16 * linesize[0];

603

604 s->cur_pic->motion_val[0][mot_index][0] =

605 s->mv[0][0][0] = mv_predictor[j][0];

606 s->cur_pic->motion_val[0][mot_index][1] =

607 s->mv[0][0][1] = mv_predictor[j][1];

608

609 // predictor intra or otherwise not available

610 if (ref[j] < 0)

611 continue;

612

613 s->decode_mb(s->opaque, ref[j], MV_DIR_FORWARD,

614 MV_TYPE_16X16, &s->mv, mb_x, mb_y, 0, 0);

615

616 if (mb_x > 0 && fixed[mb_xy - 1]) {

617 int k;

618 for (k = 0; k < 16; k++)

619 score += FFABS(src[k * linesize[0] - 1] -

620 src[k * linesize[0]]);

621 }

622 if (mb_x + 1 < mb_width && fixed[mb_xy + 1]) {

623 int k;

624 for (k = 0; k < 16; k++)

625 score += FFABS(src[k * linesize[0] + 15] -

626 src[k * linesize[0] + 16]);

627 }

628 if (mb_y > 0 && fixed[mb_xy - mb_stride]) {

629 int k;

630 for (k = 0; k < 16; k++)

631 score += FFABS(src[k - linesize[0]] - src[k]);

632 }

633 if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride]) {

634 int k;

635 for (k = 0; k < 16; k++)

636 score += FFABS(src[k + linesize[0] * 15] -

637 src[k + linesize[0] * 16]);

638 }

639

640 if (score <= best_score) { // <= will favor the last MV

641 best_score = score;

642 best_pred = j;

643 }

644 }

645 score_sum += best_score;

646 s->mv[0][0][0] = mv_predictor[best_pred][0];

647 s->mv[0][0][1] = mv_predictor[best_pred][1];

648

649 for (i = 0; i < mot_step; i++)

650 for (j = 0; j < mot_step; j++) {

651 s->cur_pic->motion_val[0][mot_index + i + j * mot_stride][0] = s->mv[0][0][0];

652 s->cur_pic->motion_val[0][mot_index + i + j * mot_stride][1] = s->mv[0][0][1];

653 }

654

655 s->decode_mb(s->opaque, ref[best_pred], MV_DIR_FORWARD,

656 MV_TYPE_16X16, &s->mv, mb_x, mb_y, 0, 0);

657

658

659 if (s->mv[0][0][0] != prev_x || s->mv[0][0][1] != prev_y) {

660 fixed[mb_xy] = MV_CHANGED;

661 changed++;

662 } else

663 fixed[mb_xy] = MV_UNCHANGED;

664 }

665 }

666 }

667

668 if (none_left)

669 return;

670

671 for (i = 0; i < s->mb_num; i++) {

672 int mb_xy = s->mb_index2xy[i];

673 if (fixed[mb_xy])

674 fixed[mb_xy] = MV_FROZEN;

675 }

676 }

677 }

678

679 static int is_intra_more_likely(ERContext *s)

680 {

681 int is_intra_likely, i, j, undamaged_count, skip_amount, mb_x, mb_y;

682

683 if (!s->last_pic || !s->last_pic->f.data[0])

684 return 1; // no previous frame available -> use spatial prediction

685

686 undamaged_count = 0;

687 for (i = 0; i < s->mb_num; i++) {

688 const int mb_xy = s->mb_index2xy[i];

689 const int error = s->error_status_table[mb_xy];

690 if (!((error & ER_DC_ERROR) && (error & ER_MV_ERROR)))

691 undamaged_count++;

692 }

693

694 if (s->avctx->codec_id == AV_CODEC_ID_H264 && s->ref_count <= 0)

695 return 1;

696

697 if (undamaged_count < 5)

698 return 0; // almost all MBs damaged -> use temporal prediction

699

700 // prevent dsp.sad() check, that requires access to the image

701 if (CONFIG_MPEG_XVMC_DECODER &&

702 s->avctx->xvmc_acceleration &&

703 s->cur_pic->f.pict_type == AV_PICTURE_TYPE_I)

704 return 1;

705

706 skip_amount = FFMAX(undamaged_count / 50, 1); // check only up to 50 MBs

707 is_intra_likely = 0;

708

709 j = 0;

710 for (mb_y = 0; mb_y < s->mb_height - 1; mb_y++) {

711 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {

712 int error;

713 const int mb_xy = mb_x + mb_y * s->mb_stride;

714

715 error = s->error_status_table[mb_xy];

716 if ((error & ER_DC_ERROR) && (error & ER_MV_ERROR))

717 continue; // skip damaged

718

719 j++;

720 // skip a few to speed things up

721 if ((j % skip_amount) != 0)

722 continue;

723

724 if (s->cur_pic->f.pict_type == AV_PICTURE_TYPE_I) {

725 int *linesize = s->cur_pic->f.linesize;

726 uint8_t *mb_ptr = s->cur_pic->f.data[0] +

727 mb_x * 16 + mb_y * 16 * linesize[0];

728 uint8_t *last_mb_ptr = s->last_pic->f.data[0] +

729 mb_x * 16 + mb_y * 16 * linesize[0];

730

731 if (s->avctx->codec_id == AV_CODEC_ID_H264) {

732 // FIXME

733 } else {

734 ff_thread_await_progress(&s->last_pic->tf, mb_y, 0);

735 }

736 is_intra_likely += s->dsp->sad[0](NULL, last_mb_ptr, mb_ptr,

737 linesize[0], 16);

738 // FIXME need await_progress() here

739 is_intra_likely -= s->dsp->sad[0](NULL, last_mb_ptr,

740 last_mb_ptr + linesize[0] * 16,

741 linesize[0], 16);

742 } else {

743 if (IS_INTRA(s->cur_pic->mb_type[mb_xy]))

744 is_intra_likely++;

745 else

746 is_intra_likely--;

747 }

748 }

749 }

750 // printf("is_intra_likely: %d type:%d\n", is_intra_likely, s->pict_type);

751 return is_intra_likely > 0;

752 }

753

754 void ff_er_frame_start(ERContext *s)

755 {

756 if (!s->avctx->err_recognition)

757 return;

758

759 memset(s->error_status_table, ER_MB_ERROR | VP_START | ER_MB_END,

760 s->mb_stride * s->mb_height * sizeof(uint8_t));

761 s->error_count = 3 * s->mb_num;

762 s->error_occurred = 0;

763 }

764

765 /**

766 * Add a slice.

767 * @param endx x component of the last macroblock, can be -1

768 * for the last of the previous line

769 * @param status the status at the end (ER_MV_END, ER_AC_ERROR, ...), it is

770 * assumed that no earlier end or error of the same type occurred

771 */

772 void ff_er_add_slice(ERContext *s, int startx, int starty,

773 int endx, int endy, int status)

774 {

775 const int start_i = av_clip(startx + starty * s->mb_width, 0, s->mb_num - 1);

776 const int end_i = av_clip(endx + endy * s->mb_width, 0, s->mb_num);

777 const int start_xy = s->mb_index2xy[start_i];

778 const int end_xy = s->mb_index2xy[end_i];

779 int mask = -1;

780

781 if (s->avctx->hwaccel)

782 return;

783

784 if (start_i > end_i || start_xy > end_xy) {

785 av_log(s->avctx, AV_LOG_ERROR,

786 "internal error, slice end before start\n");

787 return;

788 }

789

790 if (!s->avctx->err_recognition)

791 return;

792

793 mask &= ~VP_START;

794 if (status & (ER_AC_ERROR | ER_AC_END)) {

795 mask &= ~(ER_AC_ERROR | ER_AC_END);

796 s->error_count -= end_i - start_i + 1;

797 }

798 if (status & (ER_DC_ERROR | ER_DC_END)) {

799 mask &= ~(ER_DC_ERROR | ER_DC_END);

800 s->error_count -= end_i - start_i + 1;

801 }

802 if (status & (ER_MV_ERROR | ER_MV_END)) {

803 mask &= ~(ER_MV_ERROR | ER_MV_END);

804 s->error_count -= end_i - start_i + 1;

805 }

806

807 if (status & ER_MB_ERROR) {

808 s->error_occurred = 1;

809 s->error_count = INT_MAX;

810 }

811

812 if (mask == ~0x7F) {

813 memset(&s->error_status_table[start_xy], 0,

814 (end_xy - start_xy) * sizeof(uint8_t));

815 } else {

816 int i;

817 for (i = start_xy; i < end_xy; i++)

818 s->error_status_table[i] &= mask;

819 }

820

821 if (end_i == s->mb_num)

822 s->error_count = INT_MAX;

823 else {

824 s->error_status_table[end_xy] &= mask;

825 s->error_status_table[end_xy] |= status;

826 }

827

828 s->error_status_table[start_xy] |= VP_START;

829

830 if (start_xy > 0 && !(s->avctx->active_thread_type & FF_THREAD_SLICE) &&

831 s->avctx->skip_top * s->mb_width < start_i) {

832 int prev_status = s->error_status_table[s->mb_index2xy[start_i - 1]];

833

834 prev_status &= ~ VP_START;

835 if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END)) {

836 s->error_occurred = 1;

837 s->error_count = INT_MAX;

838 }

839 }

840 }

841

842 void ff_er_frame_end(ERContext *s)

843 {

844 int *linesize = s->cur_pic->f.linesize;

845 int i, mb_x, mb_y, error, error_type, dc_error, mv_error, ac_error;

846 int distance;

847 int threshold_part[4] = { 100, 100, 100 };

848 int threshold = 50;

849 int is_intra_likely;

850 int size = s->b8_stride * 2 * s->mb_height;

851

852 /* We do not support ER of field pictures yet,

853 * though it should not crash if enabled. */

854 if (!s->avctx->err_recognition || s->error_count == 0 ||

855 s->avctx->lowres ||

856 s->avctx->hwaccel ||

857 s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU ||

858 !s->cur_pic || s->cur_pic->field_picture ||

859 s->error_count == 3 * s->mb_width *

860 (s->avctx->skip_top + s->avctx->skip_bottom)) {

861 return;

862 }

863 if (s->last_pic) {

864 if (s->last_pic->f.width != s->cur_pic->f.width ||

865 s->last_pic->f.height != s->cur_pic->f.height ||

866 s->last_pic->f.format != s->cur_pic->f.format) {

867 av_log(s->avctx, AV_LOG_WARNING, "Cannot use previous picture in error concealment\n");

868 s->last_pic = NULL;

869 }

870 }

871 if (s->next_pic) {

872 if (s->next_pic->f.width != s->cur_pic->f.width ||

873 s->next_pic->f.height != s->cur_pic->f.height ||

874 s->next_pic->f.format != s->cur_pic->f.format) {

875 av_log(s->avctx, AV_LOG_WARNING, "Cannot use next picture in error concealment\n");

876 s->next_pic = NULL;

877 }

878 }

879

880 if (s->cur_pic->motion_val[0] == NULL) {

881 av_log(s->avctx, AV_LOG_ERROR, "Warning MVs not available\n");

882

883 for (i = 0; i < 2; i++) {

884 s->cur_pic->ref_index_buf[i] = av_buffer_allocz(s->mb_stride * s->mb_height * 4 * sizeof(uint8_t));

885 s->cur_pic->motion_val_buf[i] = av_buffer_allocz((size + 4) * 2 * sizeof(uint16_t));

886 if (!s->cur_pic->ref_index_buf[i] || !s->cur_pic->motion_val_buf[i])

887 break;

888 s->cur_pic->ref_index[i] = s->cur_pic->ref_index_buf[i]->data;

889 s->cur_pic->motion_val[i] = (int16_t (*)[2])s->cur_pic->motion_val_buf[i]->data + 4;

890 }

891 if (i < 2) {

892 for (i = 0; i < 2; i++) {

893 av_buffer_unref(&s->cur_pic->ref_index_buf[i]);

894 av_buffer_unref(&s->cur_pic->motion_val_buf[i]);

895 s->cur_pic->ref_index[i] = NULL;

896 s->cur_pic->motion_val[i] = NULL;

897 }

898 return;

899 }

900 }

901

902 if (s->avctx->debug & FF_DEBUG_ER) {

903 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {

904 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {

905 int status = s->error_status_table[mb_x + mb_y * s->mb_stride];

906

907 av_log(s->avctx, AV_LOG_DEBUG, "%2X ", status);

908 }

909 av_log(s->avctx, AV_LOG_DEBUG, "\n");

910 }

911 }

912

913 #if 1

914 /* handle overlapping slices */

915 for (error_type = 1; error_type <= 3; error_type++) {

916 int end_ok = 0;

917

918 for (i = s->mb_num - 1; i >= 0; i--) {

919 const int mb_xy = s->mb_index2xy[i];

920 int error = s->error_status_table[mb_xy];

921

922 if (error & (1 << error_type))

923 end_ok = 1;

924 if (error & (8 << error_type))

925 end_ok = 1;

926

927 if (!end_ok)

928 s->error_status_table[mb_xy] |= 1 << error_type;

929

930 if (error & VP_START)

931 end_ok = 0;

932 }

933 }

934 #endif

935 #if 1

936 /* handle slices with partitions of different length */

937 if (s->partitioned_frame) {

938 int end_ok = 0;

939

940 for (i = s->mb_num - 1; i >= 0; i--) {

941 const int mb_xy = s->mb_index2xy[i];

942 int error = s->error_status_table[mb_xy];

943

944 if (error & ER_AC_END)

945 end_ok = 0;

946 if ((error & ER_MV_END) ||

947 (error & ER_DC_END) ||

948 (error & ER_AC_ERROR))

949 end_ok = 1;

950

951 if (!end_ok)

952 s->error_status_table[mb_xy]|= ER_AC_ERROR;

953

954 if (error & VP_START)

955 end_ok = 0;

956 }

957 }

958 #endif

959 /* handle missing slices */

960 if (s->avctx->err_recognition & AV_EF_EXPLODE) {

961 int end_ok = 1;

962

963 // FIXME + 100 hack

964 for (i = s->mb_num - 2; i >= s->mb_width + 100; i--) {

965 const int mb_xy = s->mb_index2xy[i];

966 int error1 = s->error_status_table[mb_xy];

967 int error2 = s->error_status_table[s->mb_index2xy[i + 1]];

968

969 if (error1 & VP_START)

970 end_ok = 1;

971

972 if (error2 == (VP_START | ER_MB_ERROR | ER_MB_END) &&

973 error1 != (VP_START | ER_MB_ERROR | ER_MB_END) &&

974 ((error1 & ER_AC_END) || (error1 & ER_DC_END) ||

975 (error1 & ER_MV_END))) {

976 // end & uninit

977 end_ok = 0;

978 }

979

980 if (!end_ok)

981 s->error_status_table[mb_xy] |= ER_MB_ERROR;

982 }

983 }

984

985 #if 1

986 /* backward mark errors */

987 distance = 9999999;

988 for (error_type = 1; error_type <= 3; error_type++) {

989 for (i = s->mb_num - 1; i >= 0; i--) {

990 const int mb_xy = s->mb_index2xy[i];

991 int error = s->error_status_table[mb_xy];

992

993 if (!s->mbskip_table[mb_xy]) // FIXME partition specific

994 distance++;

995 if (error & (1 << error_type))

996 distance = 0;

997

998 if (s->partitioned_frame) {

999 if (distance < threshold_part[error_type - 1])

1000 s->error_status_table[mb_xy] |= 1 << error_type;

1001 } else {

1002 if (distance < threshold)

1003 s->error_status_table[mb_xy] |= 1 << error_type;

1004 }

1005

1006 if (error & VP_START)

1007 distance = 9999999;

1008 }

1009 }

1010 #endif

1011

1012 /* forward mark errors */

1013 error = 0;

1014 for (i = 0; i < s->mb_num; i++) {

1015 const int mb_xy = s->mb_index2xy[i];

1016 int old_error = s->error_status_table[mb_xy];

1017

1018 if (old_error & VP_START) {

1019 error = old_error & ER_MB_ERROR;

1020 } else {

1021 error |= old_error & ER_MB_ERROR;

1022 s->error_status_table[mb_xy] |= error;

1023 }

1024 }

1025 #if 1

1026 /* handle not partitioned case */

1027 if (!s->partitioned_frame) {

1028 for (i = 0; i < s->mb_num; i++) {

1029 const int mb_xy = s->mb_index2xy[i];

1030 error = s->error_status_table[mb_xy];

1031 if (error & ER_MB_ERROR)

1032 error |= ER_MB_ERROR;

1033 s->error_status_table[mb_xy] = error;

1034 }

1035 }

1036 #endif

1037

1038 dc_error = ac_error = mv_error = 0;

1039 for (i = 0; i < s->mb_num; i++) {

1040 const int mb_xy = s->mb_index2xy[i];

1041 error = s->error_status_table[mb_xy];

1042 if (error & ER_DC_ERROR)

1043 dc_error++;

1044 if (error & ER_AC_ERROR)

1045 ac_error++;

1046 if (error & ER_MV_ERROR)

1047 mv_error++;

1048 }

1049 av_log(s->avctx, AV_LOG_INFO, "concealing %d DC, %d AC, %d MV errors in %c frame\n",

1050 dc_error, ac_error, mv_error, av_get_picture_type_char(s->cur_pic->f.pict_type));

1051

1052 is_intra_likely = is_intra_more_likely(s);

1053

1054 /* set unknown mb-type to most likely */

1055 for (i = 0; i < s->mb_num; i++) {

1056 const int mb_xy = s->mb_index2xy[i];

1057 error = s->error_status_table[mb_xy];

1058 if (!((error & ER_DC_ERROR) && (error & ER_MV_ERROR)))

1059 continue;

1060

1061 if (is_intra_likely)

1062 s->cur_pic->mb_type[mb_xy] = MB_TYPE_INTRA4x4;

1063 else

1064 s->cur_pic->mb_type[mb_xy] = MB_TYPE_16x16 | MB_TYPE_L0;

1065 }

1066

1067 // change inter to intra blocks if no reference frames are available

1068 if (!(s->last_pic && s->last_pic->f.data[0]) &&

1069 !(s->next_pic && s->next_pic->f.data[0]))

1070 for (i = 0; i < s->mb_num; i++) {

1071 const int mb_xy = s->mb_index2xy[i];

1072 if (!IS_INTRA(s->cur_pic->mb_type[mb_xy]))

1073 s->cur_pic->mb_type[mb_xy] = MB_TYPE_INTRA4x4;

1074 }

1075

1076 /* handle inter blocks with damaged AC */

1077 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {

1078 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {

1079 const int mb_xy = mb_x + mb_y * s->mb_stride;

1080 const int mb_type = s->cur_pic->mb_type[mb_xy];

1081 const int dir = !(s->last_pic && s->last_pic->f.data[0]);

1082 const int mv_dir = dir ? MV_DIR_BACKWARD : MV_DIR_FORWARD;

1083 int mv_type;

1084

1085 error = s->error_status_table[mb_xy];

1086

1087 if (IS_INTRA(mb_type))

1088 continue; // intra

1089 if (error & ER_MV_ERROR)

1090 continue; // inter with damaged MV

1091 if (!(error & ER_AC_ERROR))

1092 continue; // undamaged inter

1093

1094 if (IS_8X8(mb_type)) {

1095 int mb_index = mb_x * 2 + mb_y * 2 * s->b8_stride;

1096 int j;

1097 mv_type = MV_TYPE_8X8;

1098 for (j = 0; j < 4; j++) {

1099 s->mv[0][j][0] = s->cur_pic->motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][0];

1100 s->mv[0][j][1] = s->cur_pic->motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][1];

1101 }

1102 } else {

1103 mv_type = MV_TYPE_16X16;

1104 s->mv[0][0][0] = s->cur_pic->motion_val[dir][mb_x * 2 + mb_y * 2 * s->b8_stride][0];

1105 s->mv[0][0][1] = s->cur_pic->motion_val[dir][mb_x * 2 + mb_y * 2 * s->b8_stride][1];

1106 }

1107

1108 s->decode_mb(s->opaque, 0 /* FIXME h264 partitioned slices need this set */,

1109 mv_dir, mv_type, &s->mv, mb_x, mb_y, 0, 0);

1110 }

1111 }

1112

1113 /* guess MVs */

1114 if (s->cur_pic->f.pict_type == AV_PICTURE_TYPE_B) {

1115 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {

1116 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {

1117 int xy = mb_x * 2 + mb_y * 2 * s->b8_stride;

1118 const int mb_xy = mb_x + mb_y * s->mb_stride;

1119 const int mb_type = s->cur_pic->mb_type[mb_xy];

1120 int mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;

1121

1122 error = s->error_status_table[mb_xy];

1123

1124 if (IS_INTRA(mb_type))

1125 continue;

1126 if (!(error & ER_MV_ERROR))

1127 continue; // inter with undamaged MV

1128 if (!(error & ER_AC_ERROR))

1129 continue; // undamaged inter

1130

1131 if (!(s->last_pic && s->last_pic->f.data[0]))

1132 mv_dir &= ~MV_DIR_FORWARD;

1133 if (!(s->next_pic && s->next_pic->f.data[0]))

1134 mv_dir &= ~MV_DIR_BACKWARD;

1135

1136 if (s->pp_time) {

1137 int time_pp = s->pp_time;

1138 int time_pb = s->pb_time;

1139

1140 av_assert0(s->avctx->codec_id != AV_CODEC_ID_H264);

1141 ff_thread_await_progress(&s->next_pic->tf, mb_y, 0);

1142

1143 s->mv[0][0][0] = s->next_pic->motion_val[0][xy][0] * time_pb / time_pp;

1144 s->mv[0][0][1] = s->next_pic->motion_val[0][xy][1] * time_pb / time_pp;

1145 s->mv[1][0][0] = s->next_pic->motion_val[0][xy][0] * (time_pb - time_pp) / time_pp;

1146 s->mv[1][0][1] = s->next_pic->motion_val[0][xy][1] * (time_pb - time_pp) / time_pp;

1147 } else {

1148 s->mv[0][0][0] = 0;

1149 s->mv[0][0][1] = 0;

1150 s->mv[1][0][0] = 0;

1151 s->mv[1][0][1] = 0;

1152 }

1153

1154 s->decode_mb(s->opaque, 0, mv_dir, MV_TYPE_16X16, &s->mv,

1155 mb_x, mb_y, 0, 0);

1156 }

1157 }

1158 } else

1159 guess_mv(s);

1160

1161 /* the filters below are not XvMC compatible, skip them */

1162 if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)

1163 goto ec_clean;

1164 /* fill DC for inter blocks */

1165 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {

1166 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {

1167 int dc, dcu, dcv, y, n;

1168 int16_t *dc_ptr;

1169 uint8_t *dest_y, *dest_cb, *dest_cr;

1170 const int mb_xy = mb_x + mb_y * s->mb_stride;

1171 const int mb_type = s->cur_pic->mb_type[mb_xy];

1172

1173 error = s->error_status_table[mb_xy];

1174

1175 if (IS_INTRA(mb_type) && s->partitioned_frame)

1176 continue;

1177 // if (error & ER_MV_ERROR)

1178 // continue; // inter data damaged FIXME is this good?

1179

1180 dest_y = s->cur_pic->f.data[0] + mb_x * 16 + mb_y * 16 * linesize[0];

1181 dest_cb = s->cur_pic->f.data[1] + mb_x * 8 + mb_y * 8 * linesize[1];

1182 dest_cr = s->cur_pic->f.data[2] + mb_x * 8 + mb_y * 8 * linesize[2];

1183

1184 dc_ptr = &s->dc_val[0][mb_x * 2 + mb_y * 2 * s->b8_stride];

1185 for (n = 0; n < 4; n++) {

1186 dc = 0;

1187 for (y = 0; y < 8; y++) {

1188 int x;

1189 for (x = 0; x < 8; x++)

1190 dc += dest_y[x + (n & 1) * 8 +

1191 (y + (n >> 1) * 8) * linesize[0]];

1192 }

1193 dc_ptr[(n & 1) + (n >> 1) * s->b8_stride] = (dc + 4) >> 3;

1194 }

1195

1196 dcu = dcv = 0;

1197 for (y = 0; y < 8; y++) {

1198 int x;

1199 for (x = 0; x < 8; x++) {

1200 dcu += dest_cb[x + y * linesize[1]];

1201 dcv += dest_cr[x + y * linesize[2]];

1202 }

1203 }

1204 s->dc_val[1][mb_x + mb_y * s->mb_stride] = (dcu + 4) >> 3;

1205 s->dc_val[2][mb_x + mb_y * s->mb_stride] = (dcv + 4) >> 3;

1206 }

1207 }

1208 #if 1

1209 /* guess DC for damaged blocks */

1210 guess_dc(s, s->dc_val[0], s->mb_width*2, s->mb_height*2, s->b8_stride, 1);

1211 guess_dc(s, s->dc_val[1], s->mb_width , s->mb_height , s->mb_stride, 0);

1212 guess_dc(s, s->dc_val[2], s->mb_width , s->mb_height , s->mb_stride, 0);

1213 #endif

1214

1215 /* filter luma DC */

1216 filter181(s->dc_val[0], s->mb_width * 2, s->mb_height * 2, s->b8_stride);

1217

1218 #if 1

1219 /* render DC only intra */

1220 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {

1221 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {

1222 uint8_t *dest_y, *dest_cb, *dest_cr;

1223 const int mb_xy = mb_x + mb_y * s->mb_stride;

1224 const int mb_type = s->cur_pic->mb_type[mb_xy];

1225

1226 error = s->error_status_table[mb_xy];

1227

1228 if (IS_INTER(mb_type))

1229 continue;

1230 if (!(error & ER_AC_ERROR))

1231 continue; // undamaged

1232

1233 dest_y = s->cur_pic->f.data[0] + mb_x * 16 + mb_y * 16 * linesize[0];

1234 dest_cb = s->cur_pic->f.data[1] + mb_x * 8 + mb_y * 8 * linesize[1];

1235 dest_cr = s->cur_pic->f.data[2] + mb_x * 8 + mb_y * 8 * linesize[2];

1236

1237 put_dc(s, dest_y, dest_cb, dest_cr, mb_x, mb_y);

1238 }

1239 }

1240 #endif

1241

1242 if (s->avctx->error_concealment & FF_EC_DEBLOCK) {

1243 /* filter horizontal block boundaries */

1244 h_block_filter(s, s->cur_pic->f.data[0], s->mb_width * 2,

1245 s->mb_height * 2, linesize[0], 1);

1246 h_block_filter(s, s->cur_pic->f.data[1], s->mb_width,

1247 s->mb_height, linesize[1], 0);

1248 h_block_filter(s, s->cur_pic->f.data[2], s->mb_width,

1249 s->mb_height, linesize[2], 0);

1250

1251 /* filter vertical block boundaries */

1252 v_block_filter(s, s->cur_pic->f.data[0], s->mb_width * 2,

1253 s->mb_height * 2, linesize[0], 1);

1254 v_block_filter(s, s->cur_pic->f.data[1], s->mb_width,

1255 s->mb_height, linesize[1], 0);

1256 v_block_filter(s, s->cur_pic->f.data[2], s->mb_width,

1257 s->mb_height, linesize[2], 0);

1258 }

1259

1260 ec_clean:

1261 /* clean a few tables */

1262 for (i = 0; i < s->mb_num; i++) {

1263 const int mb_xy = s->mb_index2xy[i];

1264 int error = s->error_status_table[mb_xy];

1265

1266 if (s->cur_pic->f.pict_type != AV_PICTURE_TYPE_B &&

1267 (error & (ER_DC_ERROR | ER_MV_ERROR | ER_AC_ERROR))) {

1268 s->mbskip_table[mb_xy] = 0;

1269 }

1270 s->mbintra_table[mb_xy] = 1;

1271 }

1272 s->cur_pic = NULL;

1273 s->next_pic = NULL;

1274 s->last_pic = NULL;

1275 }

Generated on Wed Jul 10 2013 23:47:57 for FFmpeg by doxygen 1.8.2