FFmpeg: libavcodec/vc1dsp.c Source File

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vc1dsp.c

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1 /*

2 * VC-1 and WMV3 decoder - DSP functions

4 *

5 * This file is part of FFmpeg.

6 *

7 * FFmpeg is free software; you can redistribute it and/or

8 * modify it under the terms of the GNU Lesser General Public

9 * License as published by the Free Software Foundation; either

10 * version 2.1 of the License, or (at your option) any later version.

11 *

12 * FFmpeg is distributed in the hope that it will be useful,

13 * but WITHOUT ANY WARRANTY; without even the implied warranty of

14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

15 * Lesser General Public License for more details.

16 *

17 * You should have received a copy of the GNU Lesser General Public

18 * License along with FFmpeg; if not, write to the Free Software

19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

20 */

22 /**

23 * @file

24 * VC-1 and WMV3 decoder

25 *

26 */

28 #include "libavutil/avassert.h"

29 #include "libavutil/common.h"

30 #include "h264chroma.h"

31 #include "rnd_avg.h"

32 #include "vc1dsp.h"

35 /** Apply overlap transform to horizontal edge

36 */

37 static void vc1_v_overlap_c(uint8_t* src, int stride)

38 {

39 int i;

40 int a, b, c, d;

41 int d1, d2;

42 int rnd = 1;

43 for(i = 0; i < 8; i++) {

44 a = src[-2*stride];

45 b = src[-stride];

46 c = src[0];

47 d = src[stride];

48 d1 = (a - d + 3 + rnd) >> 3;

49 d2 = (a - d + b - c + 4 - rnd) >> 3;

51 src[-2*stride] = a - d1;

52 src[-stride] = av_clip_uint8(b - d2);

53 src[0] = av_clip_uint8(c + d2);

54 src[stride] = d + d1;

55 src++;

56 rnd = !rnd;

57 }

58 }

60 /** Apply overlap transform to vertical edge

61 */

62 static void vc1_h_overlap_c(uint8_t* src, int stride)

63 {

64 int i;

65 int a, b, c, d;

66 int d1, d2;

67 int rnd = 1;

68 for(i = 0; i < 8; i++) {

69 a = src[-2];

70 b = src[-1];

71 c = src[0];

72 d = src[1];

73 d1 = (a - d + 3 + rnd) >> 3;

74 d2 = (a - d + b - c + 4 - rnd) >> 3;

76 src[-2] = a - d1;

77 src[-1] = av_clip_uint8(b - d2);

78 src[0] = av_clip_uint8(c + d2);

79 src[1] = d + d1;

80 src += stride;

81 rnd = !rnd;

82 }

83 }

85 static void vc1_v_s_overlap_c(int16_t *top, int16_t *bottom)

86 {

87 int i;

88 int a, b, c, d;

89 int d1, d2;

90 int rnd1 = 4, rnd2 = 3;

91 for(i = 0; i < 8; i++) {

92 a = top[48];

93 b = top[56];

94 c = bottom[0];

95 d = bottom[8];

96 d1 = a - d;

97 d2 = a - d + b - c;

99 top[48] = ((a << 3) - d1 + rnd1) >> 3;

100 top[56] = ((b << 3) - d2 + rnd2) >> 3;

101 bottom[0] = ((c << 3) + d2 + rnd1) >> 3;

102 bottom[8] = ((d << 3) + d1 + rnd2) >> 3;

103

104 bottom++;

105 top++;

106 rnd2 = 7 - rnd2;

107 rnd1 = 7 - rnd1;

108 }

109 }

110

111 static void vc1_h_s_overlap_c(int16_t *left, int16_t *right)

112 {

113 int i;

114 int a, b, c, d;

115 int d1, d2;

116 int rnd1 = 4, rnd2 = 3;

117 for(i = 0; i < 8; i++) {

118 a = left[6];

119 b = left[7];

120 c = right[0];

121 d = right[1];

122 d1 = a - d;

123 d2 = a - d + b - c;

124

125 left[6] = ((a << 3) - d1 + rnd1) >> 3;

126 left[7] = ((b << 3) - d2 + rnd2) >> 3;

127 right[0] = ((c << 3) + d2 + rnd1) >> 3;

128 right[1] = ((d << 3) + d1 + rnd2) >> 3;

129

130 right += 8;

131 left += 8;

132 rnd2 = 7 - rnd2;

133 rnd1 = 7 - rnd1;

134 }

135 }

136

137 /**

138 * VC-1 in-loop deblocking filter for one line

139 * @param src source block type

140 * @param stride block stride

141 * @param pq block quantizer

142 * @return whether other 3 pairs should be filtered or not

143 * @see 8.6

144 */

145 static av_always_inline int vc1_filter_line(uint8_t* src, int stride, int pq){

146 int a0 = (2*(src[-2*stride] - src[ 1*stride]) - 5*(src[-1*stride] - src[ 0*stride]) + 4) >> 3;

147 int a0_sign = a0 >> 31; /* Store sign */

148 a0 = (a0 ^ a0_sign) - a0_sign; /* a0 = FFABS(a0); */

149 if(a0 < pq){

150 int a1 = FFABS((2*(src[-4*stride] - src[-1*stride]) - 5*(src[-3*stride] - src[-2*stride]) + 4) >> 3);

151 int a2 = FFABS((2*(src[ 0*stride] - src[ 3*stride]) - 5*(src[ 1*stride] - src[ 2*stride]) + 4) >> 3);

152 if(a1 < a0 || a2 < a0){

153 int clip = src[-1*stride] - src[ 0*stride];

154 int clip_sign = clip >> 31;

155 clip = ((clip ^ clip_sign) - clip_sign)>>1;

156 if(clip){

157 int a3 = FFMIN(a1, a2);

158 int d = 5 * (a3 - a0);

159 int d_sign = (d >> 31);

160 d = ((d ^ d_sign) - d_sign) >> 3;

161 d_sign ^= a0_sign;

162

163 if( d_sign ^ clip_sign )

164 d = 0;

165 else{

166 d = FFMIN(d, clip);

167 d = (d ^ d_sign) - d_sign; /* Restore sign */

168 src[-1*stride] = av_clip_uint8(src[-1*stride] - d);

169 src[ 0*stride] = av_clip_uint8(src[ 0*stride] + d);

170 }

171 return 1;

172 }

173 }

174 }

175 return 0;

176 }

177

178 /**

179 * VC-1 in-loop deblocking filter

180 * @param src source block type

181 * @param step distance between horizontally adjacent elements

182 * @param stride distance between vertically adjacent elements

183 * @param len edge length to filter (4 or 8 pixels)

184 * @param pq block quantizer

185 * @see 8.6

186 */

187 static inline void vc1_loop_filter(uint8_t* src, int step, int stride, int len, int pq)

188 {

189 int i;

190 int filt3;

191

192 for(i = 0; i < len; i += 4){

193 filt3 = vc1_filter_line(src + 2*step, stride, pq);

194 if(filt3){

195 vc1_filter_line(src + 0*step, stride, pq);

196 vc1_filter_line(src + 1*step, stride, pq);

197 vc1_filter_line(src + 3*step, stride, pq);

198 }

199 src += step * 4;

200 }

201 }

202

203 static void vc1_v_loop_filter4_c(uint8_t *src, int stride, int pq)

204 {

205 vc1_loop_filter(src, 1, stride, 4, pq);

206 }

207

208 static void vc1_h_loop_filter4_c(uint8_t *src, int stride, int pq)

209 {

210 vc1_loop_filter(src, stride, 1, 4, pq);

211 }

212

213 static void vc1_v_loop_filter8_c(uint8_t *src, int stride, int pq)

214 {

215 vc1_loop_filter(src, 1, stride, 8, pq);

216 }

217

218 static void vc1_h_loop_filter8_c(uint8_t *src, int stride, int pq)

219 {

220 vc1_loop_filter(src, stride, 1, 8, pq);

221 }

222

223 static void vc1_v_loop_filter16_c(uint8_t *src, int stride, int pq)

224 {

225 vc1_loop_filter(src, 1, stride, 16, pq);

226 }

227

228 static void vc1_h_loop_filter16_c(uint8_t *src, int stride, int pq)

229 {

230 vc1_loop_filter(src, stride, 1, 16, pq);

231 }

232

233 /** Do inverse transform on 8x8 block

234 */

235 static void vc1_inv_trans_8x8_dc_c(uint8_t *dest, int linesize, int16_t *block)

236 {

237 int i;

238 int dc = block[0];

239 dc = (3 * dc + 1) >> 1;

240 dc = (3 * dc + 16) >> 5;

241 for(i = 0; i < 8; i++){

242 dest[0] = av_clip_uint8(dest[0] + dc);

243 dest[1] = av_clip_uint8(dest[1] + dc);

244 dest[2] = av_clip_uint8(dest[2] + dc);

245 dest[3] = av_clip_uint8(dest[3] + dc);

246 dest[4] = av_clip_uint8(dest[4] + dc);

247 dest[5] = av_clip_uint8(dest[5] + dc);

248 dest[6] = av_clip_uint8(dest[6] + dc);

249 dest[7] = av_clip_uint8(dest[7] + dc);

250 dest += linesize;

251 }

252 }

253

254 static void vc1_inv_trans_8x8_c(int16_t block[64])

255 {

256 int i;

257 register int t1,t2,t3,t4,t5,t6,t7,t8;

258 int16_t *src, *dst, temp[64];

259

260 src = block;

261 dst = temp;

262 for(i = 0; i < 8; i++){

263 t1 = 12 * (src[ 0] + src[32]) + 4;

264 t2 = 12 * (src[ 0] - src[32]) + 4;

265 t3 = 16 * src[16] + 6 * src[48];

266 t4 = 6 * src[16] - 16 * src[48];

267

268 t5 = t1 + t3;

269 t6 = t2 + t4;

270 t7 = t2 - t4;

271 t8 = t1 - t3;

272

273 t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];

274 t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];

275 t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];

276 t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];

277

278 dst[0] = (t5 + t1) >> 3;

279 dst[1] = (t6 + t2) >> 3;

280 dst[2] = (t7 + t3) >> 3;

281 dst[3] = (t8 + t4) >> 3;

282 dst[4] = (t8 - t4) >> 3;

283 dst[5] = (t7 - t3) >> 3;

284 dst[6] = (t6 - t2) >> 3;

285 dst[7] = (t5 - t1) >> 3;

286

287 src += 1;

288 dst += 8;

289 }

290

291 src = temp;

292 dst = block;

293 for(i = 0; i < 8; i++){

294 t1 = 12 * (src[ 0] + src[32]) + 64;

295 t2 = 12 * (src[ 0] - src[32]) + 64;

296 t3 = 16 * src[16] + 6 * src[48];

297 t4 = 6 * src[16] - 16 * src[48];

298

299 t5 = t1 + t3;

300 t6 = t2 + t4;

301 t7 = t2 - t4;

302 t8 = t1 - t3;

303

304 t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];

305 t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];

306 t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];

307 t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];

308

309 dst[ 0] = (t5 + t1) >> 7;

310 dst[ 8] = (t6 + t2) >> 7;

311 dst[16] = (t7 + t3) >> 7;

312 dst[24] = (t8 + t4) >> 7;

313 dst[32] = (t8 - t4 + 1) >> 7;

314 dst[40] = (t7 - t3 + 1) >> 7;

315 dst[48] = (t6 - t2 + 1) >> 7;

316 dst[56] = (t5 - t1 + 1) >> 7;

317

318 src++;

319 dst++;

320 }

321 }

322

323 /** Do inverse transform on 8x4 part of block

324 */

325 static void vc1_inv_trans_8x4_dc_c(uint8_t *dest, int linesize, int16_t *block)

326 {

327 int i;

328 int dc = block[0];

329 dc = ( 3 * dc + 1) >> 1;

330 dc = (17 * dc + 64) >> 7;

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

332 dest[0] = av_clip_uint8(dest[0] + dc);

333 dest[1] = av_clip_uint8(dest[1] + dc);

334 dest[2] = av_clip_uint8(dest[2] + dc);

335 dest[3] = av_clip_uint8(dest[3] + dc);

336 dest[4] = av_clip_uint8(dest[4] + dc);

337 dest[5] = av_clip_uint8(dest[5] + dc);

338 dest[6] = av_clip_uint8(dest[6] + dc);

339 dest[7] = av_clip_uint8(dest[7] + dc);

340 dest += linesize;

341 }

342 }

343

344 static void vc1_inv_trans_8x4_c(uint8_t *dest, int linesize, int16_t *block)

345 {

346 int i;

347 register int t1,t2,t3,t4,t5,t6,t7,t8;

348 int16_t *src, *dst;

349

350 src = block;

351 dst = block;

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

353 t1 = 12 * (src[0] + src[4]) + 4;

354 t2 = 12 * (src[0] - src[4]) + 4;

355 t3 = 16 * src[2] + 6 * src[6];

356 t4 = 6 * src[2] - 16 * src[6];

357

358 t5 = t1 + t3;

359 t6 = t2 + t4;

360 t7 = t2 - t4;

361 t8 = t1 - t3;

362

363 t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];

364 t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];

365 t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];

366 t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];

367

368 dst[0] = (t5 + t1) >> 3;

369 dst[1] = (t6 + t2) >> 3;

370 dst[2] = (t7 + t3) >> 3;

371 dst[3] = (t8 + t4) >> 3;

372 dst[4] = (t8 - t4) >> 3;

373 dst[5] = (t7 - t3) >> 3;

374 dst[6] = (t6 - t2) >> 3;

375 dst[7] = (t5 - t1) >> 3;

376

377 src += 8;

378 dst += 8;

379 }

380

381 src = block;

382 for(i = 0; i < 8; i++){

383 t1 = 17 * (src[ 0] + src[16]) + 64;

384 t2 = 17 * (src[ 0] - src[16]) + 64;

385 t3 = 22 * src[ 8] + 10 * src[24];

386 t4 = 22 * src[24] - 10 * src[ 8];

387

388 dest[0*linesize] = av_clip_uint8(dest[0*linesize] + ((t1 + t3) >> 7));

389 dest[1*linesize] = av_clip_uint8(dest[1*linesize] + ((t2 - t4) >> 7));

390 dest[2*linesize] = av_clip_uint8(dest[2*linesize] + ((t2 + t4) >> 7));

391 dest[3*linesize] = av_clip_uint8(dest[3*linesize] + ((t1 - t3) >> 7));

392

393 src ++;

394 dest++;

395 }

396 }

397

398 /** Do inverse transform on 4x8 parts of block

399 */

400 static void vc1_inv_trans_4x8_dc_c(uint8_t *dest, int linesize, int16_t *block)

401 {

402 int i;

403 int dc = block[0];

404 dc = (17 * dc + 4) >> 3;

405 dc = (12 * dc + 64) >> 7;

406 for(i = 0; i < 8; i++){

407 dest[0] = av_clip_uint8(dest[0] + dc);

408 dest[1] = av_clip_uint8(dest[1] + dc);

409 dest[2] = av_clip_uint8(dest[2] + dc);

410 dest[3] = av_clip_uint8(dest[3] + dc);

411 dest += linesize;

412 }

413 }

414

415 static void vc1_inv_trans_4x8_c(uint8_t *dest, int linesize, int16_t *block)

416 {

417 int i;

418 register int t1,t2,t3,t4,t5,t6,t7,t8;

419 int16_t *src, *dst;

420

421 src = block;

422 dst = block;

423 for(i = 0; i < 8; i++){

424 t1 = 17 * (src[0] + src[2]) + 4;

425 t2 = 17 * (src[0] - src[2]) + 4;

426 t3 = 22 * src[1] + 10 * src[3];

427 t4 = 22 * src[3] - 10 * src[1];

428

429 dst[0] = (t1 + t3) >> 3;

430 dst[1] = (t2 - t4) >> 3;

431 dst[2] = (t2 + t4) >> 3;

432 dst[3] = (t1 - t3) >> 3;

433

434 src += 8;

435 dst += 8;

436 }

437

438 src = block;

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

440 t1 = 12 * (src[ 0] + src[32]) + 64;

441 t2 = 12 * (src[ 0] - src[32]) + 64;

442 t3 = 16 * src[16] + 6 * src[48];

443 t4 = 6 * src[16] - 16 * src[48];

444

445 t5 = t1 + t3;

446 t6 = t2 + t4;

447 t7 = t2 - t4;

448 t8 = t1 - t3;

449

450 t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];

451 t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];

452 t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];

453 t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];

454

455 dest[0*linesize] = av_clip_uint8(dest[0*linesize] + ((t5 + t1) >> 7));

456 dest[1*linesize] = av_clip_uint8(dest[1*linesize] + ((t6 + t2) >> 7));

457 dest[2*linesize] = av_clip_uint8(dest[2*linesize] + ((t7 + t3) >> 7));

458 dest[3*linesize] = av_clip_uint8(dest[3*linesize] + ((t8 + t4) >> 7));

459 dest[4*linesize] = av_clip_uint8(dest[4*linesize] + ((t8 - t4 + 1) >> 7));

460 dest[5*linesize] = av_clip_uint8(dest[5*linesize] + ((t7 - t3 + 1) >> 7));

461 dest[6*linesize] = av_clip_uint8(dest[6*linesize] + ((t6 - t2 + 1) >> 7));

462 dest[7*linesize] = av_clip_uint8(dest[7*linesize] + ((t5 - t1 + 1) >> 7));

463

464 src ++;

465 dest++;

466 }

467 }

468

469 /** Do inverse transform on 4x4 part of block

470 */

471 static void vc1_inv_trans_4x4_dc_c(uint8_t *dest, int linesize, int16_t *block)

472 {

473 int i;

474 int dc = block[0];

475 dc = (17 * dc + 4) >> 3;

476 dc = (17 * dc + 64) >> 7;

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

478 dest[0] = av_clip_uint8(dest[0] + dc);

479 dest[1] = av_clip_uint8(dest[1] + dc);

480 dest[2] = av_clip_uint8(dest[2] + dc);

481 dest[3] = av_clip_uint8(dest[3] + dc);

482 dest += linesize;

483 }

484 }

485

486 static void vc1_inv_trans_4x4_c(uint8_t *dest, int linesize, int16_t *block)

487 {

488 int i;

489 register int t1,t2,t3,t4;

490 int16_t *src, *dst;

491

492 src = block;

493 dst = block;

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

495 t1 = 17 * (src[0] + src[2]) + 4;

496 t2 = 17 * (src[0] - src[2]) + 4;

497 t3 = 22 * src[1] + 10 * src[3];

498 t4 = 22 * src[3] - 10 * src[1];

499

500 dst[0] = (t1 + t3) >> 3;

501 dst[1] = (t2 - t4) >> 3;

502 dst[2] = (t2 + t4) >> 3;

503 dst[3] = (t1 - t3) >> 3;

504

505 src += 8;

506 dst += 8;

507 }

508

509 src = block;

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

511 t1 = 17 * (src[ 0] + src[16]) + 64;

512 t2 = 17 * (src[ 0] - src[16]) + 64;

513 t3 = 22 * src[ 8] + 10 * src[24];

514 t4 = 22 * src[24] - 10 * src[ 8];

515

516 dest[0*linesize] = av_clip_uint8(dest[0*linesize] + ((t1 + t3) >> 7));

517 dest[1*linesize] = av_clip_uint8(dest[1*linesize] + ((t2 - t4) >> 7));

518 dest[2*linesize] = av_clip_uint8(dest[2*linesize] + ((t2 + t4) >> 7));

519 dest[3*linesize] = av_clip_uint8(dest[3*linesize] + ((t1 - t3) >> 7));

520

521 src ++;

522 dest++;

523 }

524 }

525

526 /* motion compensation functions */

527 /** Filter in case of 2 filters */

528 #define VC1_MSPEL_FILTER_16B(DIR, TYPE) \

529 static av_always_inline int vc1_mspel_ ## DIR ## _filter_16bits(const TYPE *src, int stride, int mode) \

530 { \

531 switch(mode){ \

532 case 0: /* no shift - should not occur */ \

533 return 0; \

534 case 1: /* 1/4 shift */ \

535 return -4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2]; \

536 case 2: /* 1/2 shift */ \

537 return -src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2]; \

538 case 3: /* 3/4 shift */ \

539 return -3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2]; \

540 } \

541 return 0; /* should not occur */ \

542 }

543

544 VC1_MSPEL_FILTER_16B(ver, uint8_t)

545 VC1_MSPEL_FILTER_16B(hor, int16_t)

546

547

548 /** Filter used to interpolate fractional pel values

549 */

550 static av_always_inline int vc1_mspel_filter(const uint8_t *src, int stride, int mode, int r)

551 {

552 switch(mode){

553 case 0: //no shift

554 return src[0];

555 case 1: // 1/4 shift

556 return (-4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2] + 32 - r) >> 6;

557 case 2: // 1/2 shift

558 return (-src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2] + 8 - r) >> 4;

559 case 3: // 3/4 shift

560 return (-3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2] + 32 - r) >> 6;

561 }

562 return 0; //should not occur

563 }

564

565 /** Function used to do motion compensation with bicubic interpolation

566 */

567 #define VC1_MSPEL_MC(OP, OP4, OPNAME)\

568 static av_always_inline void OPNAME ## vc1_mspel_mc(uint8_t *dst, const uint8_t *src, ptrdiff_t stride, int hmode, int vmode, int rnd)\

569 {\

570 int i, j;\

571 \

572 if (vmode) { /* Horizontal filter to apply */\

573 int r;\

574 \

575 if (hmode) { /* Vertical filter to apply, output to tmp */\

576 static const int shift_value[] = { 0, 5, 1, 5 };\

577 int shift = (shift_value[hmode]+shift_value[vmode])>>1;\

578 int16_t tmp[11*8], *tptr = tmp;\

579 \

580 r = (1<<(shift-1)) + rnd-1;\

581 \

582 src -= 1;\

583 for(j = 0; j < 8; j++) {\

584 for(i = 0; i < 11; i++)\

585 tptr[i] = (vc1_mspel_ver_filter_16bits(src + i, stride, vmode)+r)>>shift;\

586 src += stride;\

587 tptr += 11;\

588 }\

589 \

590 r = 64-rnd;\

591 tptr = tmp+1;\

592 for(j = 0; j < 8; j++) {\

593 for(i = 0; i < 8; i++)\

594 OP(dst[i], (vc1_mspel_hor_filter_16bits(tptr + i, 1, hmode)+r)>>7);\

595 dst += stride;\

596 tptr += 11;\

597 }\

598 \

599 return;\

600 }\

601 else { /* No horizontal filter, output 8 lines to dst */\

602 r = 1-rnd;\

603 \

604 for(j = 0; j < 8; j++) {\

605 for(i = 0; i < 8; i++)\

606 OP(dst[i], vc1_mspel_filter(src + i, stride, vmode, r));\

607 src += stride;\

608 dst += stride;\

609 }\

610 return;\

611 }\

612 }\

613 \

614 /* Horizontal mode with no vertical mode */\

615 for(j = 0; j < 8; j++) {\

616 for(i = 0; i < 8; i++)\

617 OP(dst[i], vc1_mspel_filter(src + i, 1, hmode, rnd));\

618 dst += stride;\

619 src += stride;\

620 }\

621 }\

622 static void OPNAME ## pixels8x8_c(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int rnd){\

623 int i;\

624 for(i=0; i<8; i++){\

625 OP4(*(uint32_t*)(block ), AV_RN32(pixels ));\

626 OP4(*(uint32_t*)(block+4), AV_RN32(pixels+4));\

627 pixels+=line_size;\

628 block +=line_size;\

629 }\

630 }

631

632 #define op_put(a, b) a = av_clip_uint8(b)

633 #define op_avg(a, b) a = (a + av_clip_uint8(b) + 1) >> 1

634 #define op4_avg(a, b) a = rnd_avg32(a, b)

635 #define op4_put(a, b) a = b

636

637 VC1_MSPEL_MC(op_put, op4_put, put_)

638 VC1_MSPEL_MC(op_avg, op4_avg, avg_)

639

640 /* pixel functions - really are entry points to vc1_mspel_mc */

641

642 #define PUT_VC1_MSPEL(a, b)\

643 static void put_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, \

644 const uint8_t *src, \

645 ptrdiff_t stride, int rnd) \

646 { \

647 put_vc1_mspel_mc(dst, src, stride, a, b, rnd); \

648 } \

649 static void avg_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, \

650 const uint8_t *src, \

651 ptrdiff_t stride, int rnd) \

652 { \

653 avg_vc1_mspel_mc(dst, src, stride, a, b, rnd); \

654 }

655

656 PUT_VC1_MSPEL(1, 0)

657 PUT_VC1_MSPEL(2, 0)

658 PUT_VC1_MSPEL(3, 0)

659

660 PUT_VC1_MSPEL(0, 1)

661 PUT_VC1_MSPEL(1, 1)

662 PUT_VC1_MSPEL(2, 1)

663 PUT_VC1_MSPEL(3, 1)

664

665 PUT_VC1_MSPEL(0, 2)

666 PUT_VC1_MSPEL(1, 2)

667 PUT_VC1_MSPEL(2, 2)

668 PUT_VC1_MSPEL(3, 2)

669

670 PUT_VC1_MSPEL(0, 3)

671 PUT_VC1_MSPEL(1, 3)

672 PUT_VC1_MSPEL(2, 3)

673 PUT_VC1_MSPEL(3, 3)

674

675 static void put_no_rnd_vc1_chroma_mc8_c(uint8_t *dst/*align 8*/, uint8_t *src /*align 1*/, int stride, int h, int x, int y){

676 const int A=(8-x)*(8-y);

677 const int B=( x)*(8-y);

678 const int C=(8-x)*( y);

679 const int D=( x)*( y);

680 int i;

681

682 av_assert2(x<8 && y<8 && x>=0 && y>=0);

683

684 for(i=0; i<h; i++)

685 {

686 dst[0] = (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + 32 - 4) >> 6;

687 dst[1] = (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + 32 - 4) >> 6;

688 dst[2] = (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + 32 - 4) >> 6;

689 dst[3] = (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + 32 - 4) >> 6;

690 dst[4] = (A*src[4] + B*src[5] + C*src[stride+4] + D*src[stride+5] + 32 - 4) >> 6;

691 dst[5] = (A*src[5] + B*src[6] + C*src[stride+5] + D*src[stride+6] + 32 - 4) >> 6;

692 dst[6] = (A*src[6] + B*src[7] + C*src[stride+6] + D*src[stride+7] + 32 - 4) >> 6;

693 dst[7] = (A*src[7] + B*src[8] + C*src[stride+7] + D*src[stride+8] + 32 - 4) >> 6;

694 dst+= stride;

695 src+= stride;

696 }

697 }

698

699 static void put_no_rnd_vc1_chroma_mc4_c(uint8_t *dst, uint8_t *src, int stride, int h, int x, int y){

700 const int A=(8-x)*(8-y);

701 const int B=( x)*(8-y);

702 const int C=(8-x)*( y);

703 const int D=( x)*( y);

704 int i;

705

706 av_assert2(x<8 && y<8 && x>=0 && y>=0);

707

708 for(i=0; i<h; i++)

709 {

710 dst[0] = (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + 32 - 4) >> 6;

711 dst[1] = (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + 32 - 4) >> 6;

712 dst[2] = (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + 32 - 4) >> 6;

713 dst[3] = (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + 32 - 4) >> 6;

714 dst+= stride;

715 src+= stride;

716 }

717 }

718

719 #define avg2(a,b) ((a+b+1)>>1)

720 static void avg_no_rnd_vc1_chroma_mc8_c(uint8_t *dst/*align 8*/, uint8_t *src /*align 1*/, int stride, int h, int x, int y){

721 const int A=(8-x)*(8-y);

722 const int B=( x)*(8-y);

723 const int C=(8-x)*( y);

724 const int D=( x)*( y);

725 int i;

726

727 av_assert2(x<8 && y<8 && x>=0 && y>=0);

728

729 for(i=0; i<h; i++)

730 {

731 dst[0] = avg2(dst[0], ((A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + 32 - 4) >> 6));

732 dst[1] = avg2(dst[1], ((A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + 32 - 4) >> 6));

733 dst[2] = avg2(dst[2], ((A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + 32 - 4) >> 6));

734 dst[3] = avg2(dst[3], ((A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + 32 - 4) >> 6));

735 dst[4] = avg2(dst[4], ((A*src[4] + B*src[5] + C*src[stride+4] + D*src[stride+5] + 32 - 4) >> 6));

736 dst[5] = avg2(dst[5], ((A*src[5] + B*src[6] + C*src[stride+5] + D*src[stride+6] + 32 - 4) >> 6));

737 dst[6] = avg2(dst[6], ((A*src[6] + B*src[7] + C*src[stride+6] + D*src[stride+7] + 32 - 4) >> 6));

738 dst[7] = avg2(dst[7], ((A*src[7] + B*src[8] + C*src[stride+7] + D*src[stride+8] + 32 - 4) >> 6));

739 dst+= stride;

740 src+= stride;

741 }

742 }

743

744 static void avg_no_rnd_vc1_chroma_mc4_c(uint8_t *dst/*align 8*/, uint8_t *src /*align 1*/, int stride, int h, int x, int y){

745 const int A=(8-x)*(8-y);

746 const int B=( x)*(8-y);

747 const int C=(8-x)*( y);

748 const int D=( x)*( y);

749 int i;

750

751 av_assert2(x<8 && y<8 && x>=0 && y>=0);

752

753 for(i=0; i<h; i++)

754 {

755 dst[0] = avg2(dst[0], ((A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + 32 - 4) >> 6));

756 dst[1] = avg2(dst[1], ((A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + 32 - 4) >> 6));

757 dst[2] = avg2(dst[2], ((A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + 32 - 4) >> 6));

758 dst[3] = avg2(dst[3], ((A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + 32 - 4) >> 6));

759 dst+= stride;

760 src+= stride;

761 }

762 }

763

764 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER

765

766 static void sprite_h_c(uint8_t *dst, const uint8_t *src, int offset, int advance, int count)

767 {

768 while (count--) {

769 int a = src[(offset >> 16) ];

770 int b = src[(offset >> 16) + 1];

771 *dst++ = a + ((b - a) * (offset&0xFFFF) >> 16);

772 offset += advance;

773 }

774 }

775

776 static av_always_inline void sprite_v_template(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1,

777 int two_sprites, const uint8_t *src2a, const uint8_t *src2b, int offset2,

778 int alpha, int scaled, int width)

779 {

780 int a1, b1, a2, b2;

781 while (width--) {

782 a1 = *src1a++;

783 if (scaled) {

784 b1 = *src1b++;

785 a1 = a1 + ((b1 - a1) * offset1 >> 16);

786 }

787 if (two_sprites) {

788 a2 = *src2a++;

789 if (scaled > 1) {

790 b2 = *src2b++;

791 a2 = a2 + ((b2 - a2) * offset2 >> 16);

792 }

793 a1 = a1 + ((a2 - a1) * alpha >> 16);

794 }

795 *dst++ = a1;

796 }

797 }

798

799 static void sprite_v_single_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset, int width)

800 {

801 sprite_v_template(dst, src1a, src1b, offset, 0, NULL, NULL, 0, 0, 1, width);

802 }

803

804 static void sprite_v_double_noscale_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src2a, int alpha, int width)

805 {

806 sprite_v_template(dst, src1a, NULL, 0, 1, src2a, NULL, 0, alpha, 0, width);

807 }

808

809 static void sprite_v_double_onescale_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1,

810 const uint8_t *src2a, int alpha, int width)

811 {

812 sprite_v_template(dst, src1a, src1b, offset1, 1, src2a, NULL, 0, alpha, 1, width);

813 }

814

815 static void sprite_v_double_twoscale_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1,

816 const uint8_t *src2a, const uint8_t *src2b, int offset2,

817 int alpha, int width)

818 {

819 sprite_v_template(dst, src1a, src1b, offset1, 1, src2a, src2b, offset2, alpha, 2, width);

820 }

821

822 #endif

823

824 av_cold void ff_vc1dsp_init(VC1DSPContext* dsp) {

825 dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_c;

826 dsp->vc1_inv_trans_4x8 = vc1_inv_trans_4x8_c;

827 dsp->vc1_inv_trans_8x4 = vc1_inv_trans_8x4_c;

828 dsp->vc1_inv_trans_4x4 = vc1_inv_trans_4x4_c;

829 dsp->vc1_inv_trans_8x8_dc = vc1_inv_trans_8x8_dc_c;

830 dsp->vc1_inv_trans_4x8_dc = vc1_inv_trans_4x8_dc_c;

831 dsp->vc1_inv_trans_8x4_dc = vc1_inv_trans_8x4_dc_c;

832 dsp->vc1_inv_trans_4x4_dc = vc1_inv_trans_4x4_dc_c;

833 dsp->vc1_h_overlap = vc1_h_overlap_c;

834 dsp->vc1_v_overlap = vc1_v_overlap_c;

835 dsp->vc1_h_s_overlap = vc1_h_s_overlap_c;

836 dsp->vc1_v_s_overlap = vc1_v_s_overlap_c;

837 dsp->vc1_v_loop_filter4 = vc1_v_loop_filter4_c;

838 dsp->vc1_h_loop_filter4 = vc1_h_loop_filter4_c;

839 dsp->vc1_v_loop_filter8 = vc1_v_loop_filter8_c;

840 dsp->vc1_h_loop_filter8 = vc1_h_loop_filter8_c;

841 dsp->vc1_v_loop_filter16 = vc1_v_loop_filter16_c;

842 dsp->vc1_h_loop_filter16 = vc1_h_loop_filter16_c;

843

844 dsp->put_vc1_mspel_pixels_tab[ 0] = put_pixels8x8_c;

845 dsp->put_vc1_mspel_pixels_tab[ 1] = put_vc1_mspel_mc10_c;

846 dsp->put_vc1_mspel_pixels_tab[ 2] = put_vc1_mspel_mc20_c;

847 dsp->put_vc1_mspel_pixels_tab[ 3] = put_vc1_mspel_mc30_c;

848 dsp->put_vc1_mspel_pixels_tab[ 4] = put_vc1_mspel_mc01_c;

849 dsp->put_vc1_mspel_pixels_tab[ 5] = put_vc1_mspel_mc11_c;

850 dsp->put_vc1_mspel_pixels_tab[ 6] = put_vc1_mspel_mc21_c;

851 dsp->put_vc1_mspel_pixels_tab[ 7] = put_vc1_mspel_mc31_c;

852 dsp->put_vc1_mspel_pixels_tab[ 8] = put_vc1_mspel_mc02_c;

853 dsp->put_vc1_mspel_pixels_tab[ 9] = put_vc1_mspel_mc12_c;

854 dsp->put_vc1_mspel_pixels_tab[10] = put_vc1_mspel_mc22_c;

855 dsp->put_vc1_mspel_pixels_tab[11] = put_vc1_mspel_mc32_c;

856 dsp->put_vc1_mspel_pixels_tab[12] = put_vc1_mspel_mc03_c;

857 dsp->put_vc1_mspel_pixels_tab[13] = put_vc1_mspel_mc13_c;

858 dsp->put_vc1_mspel_pixels_tab[14] = put_vc1_mspel_mc23_c;

859 dsp->put_vc1_mspel_pixels_tab[15] = put_vc1_mspel_mc33_c;

860

861 dsp->avg_vc1_mspel_pixels_tab[ 0] = avg_pixels8x8_c;

862 dsp->avg_vc1_mspel_pixels_tab[ 1] = avg_vc1_mspel_mc10_c;

863 dsp->avg_vc1_mspel_pixels_tab[ 2] = avg_vc1_mspel_mc20_c;

864 dsp->avg_vc1_mspel_pixels_tab[ 3] = avg_vc1_mspel_mc30_c;

865 dsp->avg_vc1_mspel_pixels_tab[ 4] = avg_vc1_mspel_mc01_c;

866 dsp->avg_vc1_mspel_pixels_tab[ 5] = avg_vc1_mspel_mc11_c;

867 dsp->avg_vc1_mspel_pixels_tab[ 6] = avg_vc1_mspel_mc21_c;

868 dsp->avg_vc1_mspel_pixels_tab[ 7] = avg_vc1_mspel_mc31_c;

869 dsp->avg_vc1_mspel_pixels_tab[ 8] = avg_vc1_mspel_mc02_c;

870 dsp->avg_vc1_mspel_pixels_tab[ 9] = avg_vc1_mspel_mc12_c;

871 dsp->avg_vc1_mspel_pixels_tab[10] = avg_vc1_mspel_mc22_c;

872 dsp->avg_vc1_mspel_pixels_tab[11] = avg_vc1_mspel_mc32_c;

873 dsp->avg_vc1_mspel_pixels_tab[12] = avg_vc1_mspel_mc03_c;

874 dsp->avg_vc1_mspel_pixels_tab[13] = avg_vc1_mspel_mc13_c;

875 dsp->avg_vc1_mspel_pixels_tab[14] = avg_vc1_mspel_mc23_c;

876 dsp->avg_vc1_mspel_pixels_tab[15] = avg_vc1_mspel_mc33_c;

877

878 dsp->put_no_rnd_vc1_chroma_pixels_tab[0]= put_no_rnd_vc1_chroma_mc8_c;

879 dsp->avg_no_rnd_vc1_chroma_pixels_tab[0]= avg_no_rnd_vc1_chroma_mc8_c;

880 dsp->put_no_rnd_vc1_chroma_pixels_tab[1] = put_no_rnd_vc1_chroma_mc4_c;

881 dsp->avg_no_rnd_vc1_chroma_pixels_tab[1] = avg_no_rnd_vc1_chroma_mc4_c;

882

883 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER

884 dsp->sprite_h = sprite_h_c;

885 dsp->sprite_v_single = sprite_v_single_c;

886 dsp->sprite_v_double_noscale = sprite_v_double_noscale_c;

887 dsp->sprite_v_double_onescale = sprite_v_double_onescale_c;

888 dsp->sprite_v_double_twoscale = sprite_v_double_twoscale_c;

889 #endif

890

891 if (ARCH_PPC)

892 ff_vc1dsp_init_ppc(dsp);

893 if (ARCH_X86)

894 ff_vc1dsp_init_x86(dsp);

895 }

Generated on Sat Jan 25 2014 19:51:56 for FFmpeg by doxygen 1.8.2