FFmpeg: libavcodec/svq1enc.c Source File

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svq1enc.c

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1 /*

2 * SVQ1 Encoder

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 * Sorenson Vector Quantizer #1 (SVQ1) video codec.

25 * For more information of the SVQ1 algorithm, visit:

26 * http://www.pcisys.net/~melanson/codecs/

27 */

29 #include "avcodec.h"

30 #include "dsputil.h"

31 #include "hpeldsp.h"

32 #include "mpegvideo.h"

33 #include "h263.h"

34 #include "internal.h"

35 #include "libavutil/avassert.h"

36 #include "svq1.h"

37 #include "svq1enc_cb.h"

40 typedef struct SVQ1Context {

41 /* FIXME: Needed for motion estimation, should not be used for anything

42 * else, the idea is to make the motion estimation eventually independent

43 * of MpegEncContext, so this will be removed then. */

44 MpegEncContext m;

45 AVCodecContext *avctx;

46 DSPContext dsp;

47 HpelDSPContext hdsp;

48 AVFrame picture;

49 AVFrame current_picture;

50 AVFrame last_picture;

51 PutBitContext pb;

52 GetBitContext gb;

54 /* why ooh why this sick breadth first order,

55 * everything is slower and more complex */

56 PutBitContext reorder_pb[6];

58 int frame_width;

59 int frame_height;

61 /* Y plane block dimensions */

62 int y_block_width;

63 int y_block_height;

65 /* U & V plane (C planes) block dimensions */

66 int c_block_width;

67 int c_block_height;

69 uint16_t *mb_type;

70 uint32_t *dummy;

71 int16_t (*motion_val8[3])[2];

72 int16_t (*motion_val16[3])[2];

74 int64_t rd_total;

76 uint8_t *scratchbuf;

77 } SVQ1Context;

79 static void svq1_write_header(SVQ1Context *s, int frame_type)

80 {

81 int i;

83 /* frame code */

84 put_bits(&s->pb, 22, 0x20);

86 /* temporal reference (sure hope this is a "don't care") */

87 put_bits(&s->pb, 8, 0x00);

89 /* frame type */

90 put_bits(&s->pb, 2, frame_type - 1);

92 if (frame_type == AV_PICTURE_TYPE_I) {

93 /* no checksum since frame code is 0x20 */

94 /* no embedded string either */

95 /* output 5 unknown bits (2 + 2 + 1) */

96 put_bits(&s->pb, 5, 2); /* 2 needed by quicktime decoder */

98 i = ff_match_2uint16((void*)ff_svq1_frame_size_table,

99 FF_ARRAY_ELEMS(ff_svq1_frame_size_table),

100 s->frame_width, s->frame_height);

101 put_bits(&s->pb, 3, i);

102

103 if (i == 7) {

104 put_bits(&s->pb, 12, s->frame_width);

105 put_bits(&s->pb, 12, s->frame_height);

106 }

107 }

108

109 /* no checksum or extra data (next 2 bits get 0) */

110 put_bits(&s->pb, 2, 0);

111 }

112

113 #define QUALITY_THRESHOLD 100

114 #define THRESHOLD_MULTIPLIER 0.6

115

116 static int encode_block(SVQ1Context *s, uint8_t *src, uint8_t *ref,

117 uint8_t *decoded, int stride, int level,

118 int threshold, int lambda, int intra)

119 {

120 int count, y, x, i, j, split, best_mean, best_score, best_count;

121 int best_vector[6];

122 int block_sum[7] = { 0, 0, 0, 0, 0, 0 };

123 int w = 2 << (level + 2 >> 1);

124 int h = 2 << (level + 1 >> 1);

125 int size = w * h;

126 int16_t block[7][256];

127 const int8_t *codebook_sum, *codebook;

128 const uint16_t(*mean_vlc)[2];

129 const uint8_t(*multistage_vlc)[2];

130

131 best_score = 0;

132 // FIXME: Optimize, this does not need to be done multiple times.

133 if (intra) {

134 codebook_sum = svq1_intra_codebook_sum[level];

135 codebook = ff_svq1_intra_codebooks[level];

136 mean_vlc = ff_svq1_intra_mean_vlc;

137 multistage_vlc = ff_svq1_intra_multistage_vlc[level];

138 for (y = 0; y < h; y++) {

139 for (x = 0; x < w; x++) {

140 int v = src[x + y * stride];

141 block[0][x + w * y] = v;

142 best_score += v * v;

143 block_sum[0] += v;

144 }

145 }

146 } else {

147 codebook_sum = svq1_inter_codebook_sum[level];

148 codebook = ff_svq1_inter_codebooks[level];

149 mean_vlc = ff_svq1_inter_mean_vlc + 256;

150 multistage_vlc = ff_svq1_inter_multistage_vlc[level];

151 for (y = 0; y < h; y++) {

152 for (x = 0; x < w; x++) {

153 int v = src[x + y * stride] - ref[x + y * stride];

154 block[0][x + w * y] = v;

155 best_score += v * v;

156 block_sum[0] += v;

157 }

158 }

159 }

160

161 best_count = 0;

162 best_score -= (int)((unsigned)block_sum[0] * block_sum[0] >> (level + 3));

163 best_mean = block_sum[0] + (size >> 1) >> (level + 3);

164

165 if (level < 4) {

166 for (count = 1; count < 7; count++) {

167 int best_vector_score = INT_MAX;

168 int best_vector_sum = -999, best_vector_mean = -999;

169 const int stage = count - 1;

170 const int8_t *vector;

171

172 for (i = 0; i < 16; i++) {

173 int sum = codebook_sum[stage * 16 + i];

174 int sqr, diff, score;

175

176 vector = codebook + stage * size * 16 + i * size;

177 sqr = s->dsp.ssd_int8_vs_int16(vector, block[stage], size);

178 diff = block_sum[stage] - sum;

179 score = sqr - (diff * (int64_t)diff >> (level + 3)); // FIXME: 64bit slooow

180 if (score < best_vector_score) {

181 int mean = diff + (size >> 1) >> (level + 3);

182 av_assert2(mean > -300 && mean < 300);

183 mean = av_clip(mean, intra ? 0 : -256, 255);

184 best_vector_score = score;

185 best_vector[stage] = i;

186 best_vector_sum = sum;

187 best_vector_mean = mean;

188 }

189 }

190 av_assert0(best_vector_mean != -999);

191 vector = codebook + stage * size * 16 + best_vector[stage] * size;

192 for (j = 0; j < size; j++)

193 block[stage + 1][j] = block[stage][j] - vector[j];

194 block_sum[stage + 1] = block_sum[stage] - best_vector_sum;

195 best_vector_score += lambda *

196 (+1 + 4 * count +

197 multistage_vlc[1 + count][1]

198 + mean_vlc[best_vector_mean][1]);

199

200 if (best_vector_score < best_score) {

201 best_score = best_vector_score;

202 best_count = count;

203 best_mean = best_vector_mean;

204 }

205 }

206 }

207

208 split = 0;

209 if (best_score > threshold && level) {

210 int score = 0;

211 int offset = level & 1 ? stride * h / 2 : w / 2;

212 PutBitContext backup[6];

213

214 for (i = level - 1; i >= 0; i--)

215 backup[i] = s->reorder_pb[i];

216 score += encode_block(s, src, ref, decoded, stride, level - 1,

217 threshold >> 1, lambda, intra);

218 score += encode_block(s, src + offset, ref + offset, decoded + offset,

219 stride, level - 1, threshold >> 1, lambda, intra);

220 score += lambda;

221

222 if (score < best_score) {

223 best_score = score;

224 split = 1;

225 } else {

226 for (i = level - 1; i >= 0; i--)

227 s->reorder_pb[i] = backup[i];

228 }

229 }

230 if (level > 0)

231 put_bits(&s->reorder_pb[level], 1, split);

232

233 if (!split) {

234 av_assert1(best_mean >= 0 && best_mean < 256 || !intra);

235 av_assert1(best_mean >= -256 && best_mean < 256);

236 av_assert1(best_count >= 0 && best_count < 7);

237 av_assert1(level < 4 || best_count == 0);

238

239 /* output the encoding */

240 put_bits(&s->reorder_pb[level],

241 multistage_vlc[1 + best_count][1],

242 multistage_vlc[1 + best_count][0]);

243 put_bits(&s->reorder_pb[level], mean_vlc[best_mean][1],

244 mean_vlc[best_mean][0]);

245

246 for (i = 0; i < best_count; i++) {

247 av_assert2(best_vector[i] >= 0 && best_vector[i] < 16);

248 put_bits(&s->reorder_pb[level], 4, best_vector[i]);

249 }

250

251 for (y = 0; y < h; y++)

252 for (x = 0; x < w; x++)

253 decoded[x + y * stride] = src[x + y * stride] -

254 block[best_count][x + w * y] +

255 best_mean;

256 }

257

258 return best_score;

259 }

260

261 static int svq1_encode_plane(SVQ1Context *s, int plane,

262 unsigned char *src_plane,

263 unsigned char *ref_plane,

264 unsigned char *decoded_plane,

265 int width, int height, int src_stride, int stride)

266 {

267 int x, y;

268 int i;

269 int block_width, block_height;

270 int level;

271 int threshold[6];

272 uint8_t *src = s->scratchbuf + stride * 16;

273 const int lambda = (s->picture.quality * s->picture.quality) >>

274 (2 * FF_LAMBDA_SHIFT);

275

276 /* figure out the acceptable level thresholds in advance */

277 threshold[5] = QUALITY_THRESHOLD;

278 for (level = 4; level >= 0; level--)

279 threshold[level] = threshold[level + 1] * THRESHOLD_MULTIPLIER;

280

281 block_width = (width + 15) / 16;

282 block_height = (height + 15) / 16;

283

284 if (s->picture.pict_type == AV_PICTURE_TYPE_P) {

285 s->m.avctx = s->avctx;

286 s->m.current_picture_ptr = &s->m.current_picture;

287 s->m.last_picture_ptr = &s->m.last_picture;

288 s->m.last_picture.f.data[0] = ref_plane;

289 s->m.linesize =

290 s->m.last_picture.f.linesize[0] =

291 s->m.new_picture.f.linesize[0] =

292 s->m.current_picture.f.linesize[0] = stride;

293 s->m.width = width;

294 s->m.height = height;

295 s->m.mb_width = block_width;

296 s->m.mb_height = block_height;

297 s->m.mb_stride = s->m.mb_width + 1;

298 s->m.b8_stride = 2 * s->m.mb_width + 1;

299 s->m.f_code = 1;

300 s->m.pict_type = s->picture.pict_type;

301 s->m.me_method = s->avctx->me_method;

302 s->m.me.scene_change_score = 0;

303 s->m.flags = s->avctx->flags;

304 // s->m.out_format = FMT_H263;

305 // s->m.unrestricted_mv = 1;

306 s->m.lambda = s->picture.quality;

307 s->m.qscale = s->m.lambda * 139 +

308 FF_LAMBDA_SCALE * 64 >>

309 FF_LAMBDA_SHIFT + 7;

310 s->m.lambda2 = s->m.lambda * s->m.lambda +

311 FF_LAMBDA_SCALE / 2 >>

312 FF_LAMBDA_SHIFT;

313

314 if (!s->motion_val8[plane]) {

315 s->motion_val8[plane] = av_mallocz((s->m.b8_stride *

316 block_height * 2 + 2) *

317 2 * sizeof(int16_t));

318 s->motion_val16[plane] = av_mallocz((s->m.mb_stride *

319 (block_height + 2) + 1) *

320 2 * sizeof(int16_t));

321 }

322

323 s->m.mb_type = s->mb_type;

324

325 // dummies, to avoid segfaults

326 s->m.current_picture.mb_mean = (uint8_t *)s->dummy;

327 s->m.current_picture.mb_var = (uint16_t *)s->dummy;

328 s->m.current_picture.mc_mb_var = (uint16_t *)s->dummy;

329 s->m.current_picture.mb_type = s->dummy;

330

331 s->m.current_picture.motion_val[0] = s->motion_val8[plane] + 2;

332 s->m.p_mv_table = s->motion_val16[plane] +

333 s->m.mb_stride + 1;

334 s->m.dsp = s->dsp; // move

335 ff_init_me(&s->m);

336

337 s->m.me.dia_size = s->avctx->dia_size;

338 s->m.first_slice_line = 1;

339 for (y = 0; y < block_height; y++) {

340 s->m.new_picture.f.data[0] = src - y * 16 * stride; // ugly

341 s->m.mb_y = y;

342

343 for (i = 0; i < 16 && i + 16 * y < height; i++) {

344 memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],

345 width);

346 for (x = width; x < 16 * block_width; x++)

347 src[i * stride + x] = src[i * stride + x - 1];

348 }

349 for (; i < 16 && i + 16 * y < 16 * block_height; i++)

350 memcpy(&src[i * stride], &src[(i - 1) * stride],

351 16 * block_width);

352

353 for (x = 0; x < block_width; x++) {

354 s->m.mb_x = x;

355 ff_init_block_index(&s->m);

356 ff_update_block_index(&s->m);

357

358 ff_estimate_p_frame_motion(&s->m, x, y);

359 }

360 s->m.first_slice_line = 0;

361 }

362

363 ff_fix_long_p_mvs(&s->m);

364 ff_fix_long_mvs(&s->m, NULL, 0, s->m.p_mv_table, s->m.f_code,

365 CANDIDATE_MB_TYPE_INTER, 0);

366 }

367

368 s->m.first_slice_line = 1;

369 for (y = 0; y < block_height; y++) {

370 for (i = 0; i < 16 && i + 16 * y < height; i++) {

371 memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],

372 width);

373 for (x = width; x < 16 * block_width; x++)

374 src[i * stride + x] = src[i * stride + x - 1];

375 }

376 for (; i < 16 && i + 16 * y < 16 * block_height; i++)

377 memcpy(&src[i * stride], &src[(i - 1) * stride], 16 * block_width);

378

379 s->m.mb_y = y;

380 for (x = 0; x < block_width; x++) {

381 uint8_t reorder_buffer[3][6][7 * 32];

382 int count[3][6];

383 int offset = y * 16 * stride + x * 16;

384 uint8_t *decoded = decoded_plane + offset;

385 uint8_t *ref = ref_plane + offset;

386 int score[4] = { 0, 0, 0, 0 }, best;

387 uint8_t *temp = s->scratchbuf;

388

389 if (s->pb.buf_end - s->pb.buf -

390 (put_bits_count(&s->pb) >> 3) < 3000) { // FIXME: check size

391 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");

392 return -1;

393 }

394

395 s->m.mb_x = x;

396 ff_init_block_index(&s->m);

397 ff_update_block_index(&s->m);

398

399 if (s->picture.pict_type == AV_PICTURE_TYPE_I ||

400 (s->m.mb_type[x + y * s->m.mb_stride] &

401 CANDIDATE_MB_TYPE_INTRA)) {

402 for (i = 0; i < 6; i++)

403 init_put_bits(&s->reorder_pb[i], reorder_buffer[0][i],

404 7 * 32);

405 if (s->picture.pict_type == AV_PICTURE_TYPE_P) {

406 const uint8_t *vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_INTRA];

407 put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);

408 score[0] = vlc[1] * lambda;

409 }

410 score[0] += encode_block(s, src + 16 * x, NULL, temp, stride,

411 5, 64, lambda, 1);

412 for (i = 0; i < 6; i++) {

413 count[0][i] = put_bits_count(&s->reorder_pb[i]);

414 flush_put_bits(&s->reorder_pb[i]);

415 }

416 } else

417 score[0] = INT_MAX;

418

419 best = 0;

420

421 if (s->picture.pict_type == AV_PICTURE_TYPE_P) {

422 const uint8_t *vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_INTER];

423 int mx, my, pred_x, pred_y, dxy;

424 int16_t *motion_ptr;

425

426 motion_ptr = ff_h263_pred_motion(&s->m, 0, 0, &pred_x, &pred_y);

427 if (s->m.mb_type[x + y * s->m.mb_stride] &

428 CANDIDATE_MB_TYPE_INTER) {

429 for (i = 0; i < 6; i++)

430 init_put_bits(&s->reorder_pb[i], reorder_buffer[1][i],

431 7 * 32);

432

433 put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);

434

435 s->m.pb = s->reorder_pb[5];

436 mx = motion_ptr[0];

437 my = motion_ptr[1];

438 av_assert1(mx >= -32 && mx <= 31);

439 av_assert1(my >= -32 && my <= 31);

440 av_assert1(pred_x >= -32 && pred_x <= 31);

441 av_assert1(pred_y >= -32 && pred_y <= 31);

442 ff_h263_encode_motion(&s->m, mx - pred_x, 1);

443 ff_h263_encode_motion(&s->m, my - pred_y, 1);

444 s->reorder_pb[5] = s->m.pb;

445 score[1] += lambda * put_bits_count(&s->reorder_pb[5]);

446

447 dxy = (mx & 1) + 2 * (my & 1);

448

449 s->hdsp.put_pixels_tab[0][dxy](temp + 16,

450 ref + (mx >> 1) +

451 stride * (my >> 1),

452 stride, 16);

453

454 score[1] += encode_block(s, src + 16 * x, temp + 16,

455 decoded, stride, 5, 64, lambda, 0);

456 best = score[1] <= score[0];

457

458 vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_SKIP];

459 score[2] = s->dsp.sse[0](NULL, src + 16 * x, ref,

460 stride, 16);

461 score[2] += vlc[1] * lambda;

462 if (score[2] < score[best] && mx == 0 && my == 0) {

463 best = 2;

464 s->hdsp.put_pixels_tab[0][0](decoded, ref, stride, 16);

465 for (i = 0; i < 6; i++)

466 count[2][i] = 0;

467 put_bits(&s->pb, vlc[1], vlc[0]);

468 }

469 }

470

471 if (best == 1) {

472 for (i = 0; i < 6; i++) {

473 count[1][i] = put_bits_count(&s->reorder_pb[i]);

474 flush_put_bits(&s->reorder_pb[i]);

475 }

476 } else {

477 motion_ptr[0] =

478 motion_ptr[1] =

479 motion_ptr[2] =

480 motion_ptr[3] =

481 motion_ptr[0 + 2 * s->m.b8_stride] =

482 motion_ptr[1 + 2 * s->m.b8_stride] =

483 motion_ptr[2 + 2 * s->m.b8_stride] =

484 motion_ptr[3 + 2 * s->m.b8_stride] = 0;

485 }

486 }

487

488 s->rd_total += score[best];

489

490 for (i = 5; i >= 0; i--)

491 avpriv_copy_bits(&s->pb, reorder_buffer[best][i],

492 count[best][i]);

493 if (best == 0)

494 s->hdsp.put_pixels_tab[0][0](decoded, temp, stride, 16);

495 }

496 s->m.first_slice_line = 0;

497 }

498 return 0;

499 }

500

501 static av_cold int svq1_encode_init(AVCodecContext *avctx)

502 {

503 SVQ1Context *const s = avctx->priv_data;

504

505 ff_dsputil_init(&s->dsp, avctx);

506 ff_hpeldsp_init(&s->hdsp, avctx->flags);

507 avctx->coded_frame = &s->picture;

508

509 s->frame_width = avctx->width;

510 s->frame_height = avctx->height;

511

512 s->y_block_width = (s->frame_width + 15) / 16;

513 s->y_block_height = (s->frame_height + 15) / 16;

514

515 s->c_block_width = (s->frame_width / 4 + 15) / 16;

516 s->c_block_height = (s->frame_height / 4 + 15) / 16;

517

518 s->avctx = avctx;

519 s->m.avctx = avctx;

520 s->m.picture_structure = PICT_FRAME;

521 s->m.me.temp =

522 s->m.me.scratchpad = av_mallocz((avctx->width + 64) *

523 2 * 16 * 2 * sizeof(uint8_t));

524 s->m.me.map = av_mallocz(ME_MAP_SIZE * sizeof(uint32_t));

525 s->m.me.score_map = av_mallocz(ME_MAP_SIZE * sizeof(uint32_t));

526 s->mb_type = av_mallocz((s->y_block_width + 1) *

527 s->y_block_height * sizeof(int16_t));

528 s->dummy = av_mallocz((s->y_block_width + 1) *

529 s->y_block_height * sizeof(int32_t));

530 ff_h263_encode_init(&s->m); // mv_penalty

531

532 return 0;

533 }

534

535 static int svq1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,

536 const AVFrame *pict, int *got_packet)

537 {

538 SVQ1Context *const s = avctx->priv_data;

539 AVFrame *const p = &s->picture;

540 AVFrame temp;

541 int i, ret;

542

543 if ((ret = ff_alloc_packet2(avctx, pkt, s->y_block_width * s->y_block_height *

544 MAX_MB_BYTES*3 + FF_MIN_BUFFER_SIZE)) < 0)

545 return ret;

546

547 if (avctx->pix_fmt != AV_PIX_FMT_YUV410P) {

548 av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n");

549 return -1;

550 }

551

552 if (!s->current_picture.data[0]) {

553 if ((ret = ff_get_buffer(avctx, &s->current_picture, 0))< 0 ||

554 (ret = ff_get_buffer(avctx, &s->last_picture, 0)) < 0) {

555 return ret;

556 }

557 s->scratchbuf = av_malloc(s->current_picture.linesize[0] * 16 * 2);

558 }

559

560 av_frame_move_ref(&temp, &s->current_picture);

561 av_frame_move_ref(&s->current_picture, &s->last_picture);

562 av_frame_move_ref(&s->last_picture, &temp);

563

564 init_put_bits(&s->pb, pkt->data, pkt->size);

565

566 *p = *pict;

567 p->pict_type = avctx->gop_size && avctx->frame_number % avctx->gop_size ?

568 AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;

569 p->key_frame = p->pict_type == AV_PICTURE_TYPE_I;

570

571 svq1_write_header(s, p->pict_type);

572 for (i = 0; i < 3; i++)

573 if (svq1_encode_plane(s, i,

574 s->picture.data[i],

575 s->last_picture.data[i],

576 s->current_picture.data[i],

577 s->frame_width / (i ? 4 : 1),

578 s->frame_height / (i ? 4 : 1),

579 s->picture.linesize[i],

580 s->current_picture.linesize[i]) < 0)

581 return -1;

582

583 // avpriv_align_put_bits(&s->pb);

584 while (put_bits_count(&s->pb) & 31)

585 put_bits(&s->pb, 1, 0);

586

587 flush_put_bits(&s->pb);

588

589 pkt->size = put_bits_count(&s->pb) / 8;

590 if (p->pict_type == AV_PICTURE_TYPE_I)

591 pkt->flags |= AV_PKT_FLAG_KEY;

592 *got_packet = 1;

593

594 return 0;

595 }

596

597 static av_cold int svq1_encode_end(AVCodecContext *avctx)

598 {

599 SVQ1Context *const s = avctx->priv_data;

600 int i;

601

602 av_log(avctx, AV_LOG_DEBUG, "RD: %f\n",

603 s->rd_total / (double)(avctx->width * avctx->height *

604 avctx->frame_number));

605

606 av_freep(&s->m.me.scratchpad);

607 av_freep(&s->m.me.map);

608 av_freep(&s->m.me.score_map);

609 av_freep(&s->mb_type);

610 av_freep(&s->dummy);

611 av_freep(&s->scratchbuf);

612

613 for (i = 0; i < 3; i++) {

614 av_freep(&s->motion_val8[i]);

615 av_freep(&s->motion_val16[i]);

616 }

617

618 av_frame_unref(&s->current_picture);

619 av_frame_unref(&s->last_picture);

620

621 return 0;

622 }

623

624 AVCodec ff_svq1_encoder = {

625 .name = "svq1",

626 .type = AVMEDIA_TYPE_VIDEO,

627 .id = AV_CODEC_ID_SVQ1,

628 .priv_data_size = sizeof(SVQ1Context),

629 .init = svq1_encode_init,

630 .encode2 = svq1_encode_frame,

631 .close = svq1_encode_end,

632 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV410P,

633 AV_PIX_FMT_NONE },

634 .long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1"),

635 };

Generated on Wed Jul 10 2013 23:48:05 for FFmpeg by doxygen 1.8.2