FFmpeg: libavcodec/snowenc.c Source File

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libavcodec

snowenc.c

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1 /*

3 *

4 * This file is part of FFmpeg.

5 *

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

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

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

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

10 *

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

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

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

14 * Lesser General Public License for more details.

15 *

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

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

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

19 */

21 #include "libavutil/intmath.h"

22 #include "libavutil/log.h"

23 #include "libavutil/opt.h"

24 #include "avcodec.h"

25 #include "internal.h"

26 #include "snow_dwt.h"

27 #include "snow.h"

29 #include "rangecoder.h"

30 #include "mathops.h"

32 #include "mpegvideo.h"

33 #include "h263.h"

35 static av_cold int encode_init(AVCodecContext *avctx)

36 {

37 SnowContext *s = avctx->priv_data;

38 int plane_index, ret;

39 int i;

41 if(avctx->prediction_method == DWT_97

42 && (avctx->flags & CODEC_FLAG_QSCALE)

43 && avctx->global_quality == 0){

44 av_log(avctx, AV_LOG_ERROR, "The 9/7 wavelet is incompatible with lossless mode.\n");

45 return -1;

46 }

48 s->spatial_decomposition_type= avctx->prediction_method; //FIXME add decorrelator type r transform_type

50 s->mv_scale = (avctx->flags & CODEC_FLAG_QPEL) ? 2 : 4;

51 s->block_max_depth= (avctx->flags & CODEC_FLAG_4MV ) ? 1 : 0;

53 for(plane_index=0; plane_index<3; plane_index++){

54 s->plane[plane_index].diag_mc= 1;

55 s->plane[plane_index].htaps= 6;

56 s->plane[plane_index].hcoeff[0]= 40;

57 s->plane[plane_index].hcoeff[1]= -10;

58 s->plane[plane_index].hcoeff[2]= 2;

59 s->plane[plane_index].fast_mc= 1;

60 }

62 if ((ret = ff_snow_common_init(avctx)) < 0) {

63 ff_snow_common_end(avctx->priv_data);

64 return ret;

65 }

66 ff_mpegvideoencdsp_init(&s->mpvencdsp, avctx);

68 ff_snow_alloc_blocks(s);

70 s->version=0;

72 s->m.avctx = avctx;

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

74 s->m.bit_rate= avctx->bit_rate;

76 s->m.me.temp =

77 s->m.me.scratchpad= av_mallocz_array((avctx->width+64), 2*16*2*sizeof(uint8_t));

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

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

80 s->m.obmc_scratchpad= av_mallocz(MB_SIZE*MB_SIZE*12*sizeof(uint32_t));

81 if (!s->m.me.scratchpad || !s->m.me.map || !s->m.me.score_map || !s->m.obmc_scratchpad)

82 return AVERROR(ENOMEM);

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

86 s->max_ref_frames = FFMAX(FFMIN(avctx->refs, MAX_REF_FRAMES), 1);

88 if(avctx->flags&CODEC_FLAG_PASS1){

89 if(!avctx->stats_out)

90 avctx->stats_out = av_mallocz(256);

92 if (!avctx->stats_out)

93 return AVERROR(ENOMEM);

94 }

95 if((avctx->flags&CODEC_FLAG_PASS2) || !(avctx->flags&CODEC_FLAG_QSCALE)){

96 if(ff_rate_control_init(&s->m) < 0)

97 return -1;

98 }

99 s->pass1_rc= !(avctx->flags & (CODEC_FLAG_QSCALE|CODEC_FLAG_PASS2));

100

101 switch(avctx->pix_fmt){

102 case AV_PIX_FMT_YUV444P:

103 // case AV_PIX_FMT_YUV422P:

104 case AV_PIX_FMT_YUV420P:

105 // case AV_PIX_FMT_YUV411P:

106 case AV_PIX_FMT_YUV410P:

107 s->nb_planes = 3;

108 s->colorspace_type= 0;

109 break;

110 case AV_PIX_FMT_GRAY8:

111 s->nb_planes = 1;

112 s->colorspace_type = 1;

113 break;

114 /* case AV_PIX_FMT_RGB32:

115 s->colorspace= 1;

116 break;*/

117 default:

118 av_log(avctx, AV_LOG_ERROR, "pixel format not supported\n");

119 return -1;

120 }

121 avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);

122

123 ff_set_cmp(&s->mecc, s->mecc.me_cmp, s->avctx->me_cmp);

124 ff_set_cmp(&s->mecc, s->mecc.me_sub_cmp, s->avctx->me_sub_cmp);

125

126 s->input_picture = av_frame_alloc();

127 avctx->coded_frame = av_frame_alloc();

128 if (!s->input_picture || !avctx->coded_frame)

129 return AVERROR(ENOMEM);

130

131 if ((ret = ff_snow_get_buffer(s, s->input_picture)) < 0)

132 return ret;

133

134 if(s->avctx->me_method == ME_ITER){

135 int size= s->b_width * s->b_height << 2*s->block_max_depth;

136 for(i=0; i<s->max_ref_frames; i++){

137 s->ref_mvs[i]= av_mallocz_array(size, sizeof(int16_t[2]));

138 s->ref_scores[i]= av_mallocz_array(size, sizeof(uint32_t));

139 if (!s->ref_mvs[i] || !s->ref_scores[i])

140 return AVERROR(ENOMEM);

141 }

142 }

143

144 return 0;

145 }

146

147 //near copy & paste from dsputil, FIXME

148 static int pix_sum(uint8_t * pix, int line_size, int w, int h)

149 {

150 int s, i, j;

151

152 s = 0;

153 for (i = 0; i < h; i++) {

154 for (j = 0; j < w; j++) {

155 s += pix[0];

156 pix ++;

157 }

158 pix += line_size - w;

159 }

160 return s;

161 }

162

163 //near copy & paste from dsputil, FIXME

164 static int pix_norm1(uint8_t * pix, int line_size, int w)

165 {

166 int s, i, j;

167 uint32_t *sq = ff_square_tab + 256;

168

169 s = 0;

170 for (i = 0; i < w; i++) {

171 for (j = 0; j < w; j ++) {

172 s += sq[pix[0]];

173 pix ++;

174 }

175 pix += line_size - w;

176 }

177 return s;

178 }

179

180 static inline int get_penalty_factor(int lambda, int lambda2, int type){

181 switch(type&0xFF){

182 default:

183 case FF_CMP_SAD:

184 return lambda>>FF_LAMBDA_SHIFT;

185 case FF_CMP_DCT:

186 return (3*lambda)>>(FF_LAMBDA_SHIFT+1);

187 case FF_CMP_W53:

188 return (4*lambda)>>(FF_LAMBDA_SHIFT);

189 case FF_CMP_W97:

190 return (2*lambda)>>(FF_LAMBDA_SHIFT);

191 case FF_CMP_SATD:

192 case FF_CMP_DCT264:

193 return (2*lambda)>>FF_LAMBDA_SHIFT;

194 case FF_CMP_RD:

195 case FF_CMP_PSNR:

196 case FF_CMP_SSE:

197 case FF_CMP_NSSE:

198 return lambda2>>FF_LAMBDA_SHIFT;

199 case FF_CMP_BIT:

200 return 1;

201 }

202 }

203

204 //FIXME copy&paste

205 #define P_LEFT P[1]

206 #define P_TOP P[2]

207 #define P_TOPRIGHT P[3]

208 #define P_MEDIAN P[4]

209 #define P_MV1 P[9]

210 #define FLAG_QPEL 1 //must be 1

211

212 static int encode_q_branch(SnowContext *s, int level, int x, int y){

213 uint8_t p_buffer[1024];

214 uint8_t i_buffer[1024];

215 uint8_t p_state[sizeof(s->block_state)];

216 uint8_t i_state[sizeof(s->block_state)];

217 RangeCoder pc, ic;

218 uint8_t *pbbak= s->c.bytestream;

219 uint8_t *pbbak_start= s->c.bytestream_start;

220 int score, score2, iscore, i_len, p_len, block_s, sum, base_bits;

221 const int w= s->b_width << s->block_max_depth;

222 const int h= s->b_height << s->block_max_depth;

223 const int rem_depth= s->block_max_depth - level;

224 const int index= (x + y*w) << rem_depth;

225 const int block_w= 1<<(LOG2_MB_SIZE - level);

226 int trx= (x+1)<<rem_depth;

227 int try= (y+1)<<rem_depth;

228 const BlockNode *left = x ? &s->block[index-1] : &null_block;

229 const BlockNode *top = y ? &s->block[index-w] : &null_block;

230 const BlockNode *right = trx<w ? &s->block[index+1] : &null_block;

231 const BlockNode *bottom= try<h ? &s->block[index+w] : &null_block;

232 const BlockNode *tl = y && x ? &s->block[index-w-1] : left;

233 const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt

234 int pl = left->color[0];

235 int pcb= left->color[1];

236 int pcr= left->color[2];

237 int pmx, pmy;

238 int mx=0, my=0;

239 int l,cr,cb;

240 const int stride= s->current_picture->linesize[0];

241 const int uvstride= s->current_picture->linesize[1];

242 uint8_t *current_data[3]= { s->input_picture->data[0] + (x + y* stride)*block_w,

243 s->input_picture->data[1] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift),

244 s->input_picture->data[2] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift)};

245 int P[10][2];

246 int16_t last_mv[3][2];

247 int qpel= !!(s->avctx->flags & CODEC_FLAG_QPEL); //unused

248 const int shift= 1+qpel;

249 MotionEstContext *c= &s->m.me;

250 int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);

251 int mx_context= av_log2(2*FFABS(left->mx - top->mx));

252 int my_context= av_log2(2*FFABS(left->my - top->my));

253 int s_context= 2*left->level + 2*top->level + tl->level + tr->level;

254 int ref, best_ref, ref_score, ref_mx, ref_my;

255

256 av_assert0(sizeof(s->block_state) >= 256);

257 if(s->keyframe){

258 set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);

259 return 0;

260 }

261

262 // clip predictors / edge ?

263

264 P_LEFT[0]= left->mx;

265 P_LEFT[1]= left->my;

266 P_TOP [0]= top->mx;

267 P_TOP [1]= top->my;

268 P_TOPRIGHT[0]= tr->mx;

269 P_TOPRIGHT[1]= tr->my;

270

271 last_mv[0][0]= s->block[index].mx;

272 last_mv[0][1]= s->block[index].my;

273 last_mv[1][0]= right->mx;

274 last_mv[1][1]= right->my;

275 last_mv[2][0]= bottom->mx;

276 last_mv[2][1]= bottom->my;

277

278 s->m.mb_stride=2;

279 s->m.mb_x=

280 s->m.mb_y= 0;

281 c->skip= 0;

282

283 av_assert1(c-> stride == stride);

284 av_assert1(c->uvstride == uvstride);

285

286 c->penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_cmp);

287 c->sub_penalty_factor= get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_sub_cmp);

288 c->mb_penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->mb_cmp);

289 c->current_mv_penalty= c->mv_penalty[s->m.f_code=1] + MAX_MV;

290

291 c->xmin = - x*block_w - 16+3;

292 c->ymin = - y*block_w - 16+3;

293 c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;

294 c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;

295

296 if(P_LEFT[0] > (c->xmax<<shift)) P_LEFT[0] = (c->xmax<<shift);

297 if(P_LEFT[1] > (c->ymax<<shift)) P_LEFT[1] = (c->ymax<<shift);

298 if(P_TOP[0] > (c->xmax<<shift)) P_TOP[0] = (c->xmax<<shift);

299 if(P_TOP[1] > (c->ymax<<shift)) P_TOP[1] = (c->ymax<<shift);

300 if(P_TOPRIGHT[0] < (c->xmin<<shift)) P_TOPRIGHT[0]= (c->xmin<<shift);

301 if(P_TOPRIGHT[0] > (c->xmax<<shift)) P_TOPRIGHT[0]= (c->xmax<<shift); //due to pmx no clip

302 if(P_TOPRIGHT[1] > (c->ymax<<shift)) P_TOPRIGHT[1]= (c->ymax<<shift);

303

304 P_MEDIAN[0]= mid_pred(P_LEFT[0], P_TOP[0], P_TOPRIGHT[0]);

305 P_MEDIAN[1]= mid_pred(P_LEFT[1], P_TOP[1], P_TOPRIGHT[1]);

306

307 if (!y) {

308 c->pred_x= P_LEFT[0];

309 c->pred_y= P_LEFT[1];

310 } else {

311 c->pred_x = P_MEDIAN[0];

312 c->pred_y = P_MEDIAN[1];

313 }

314

315 score= INT_MAX;

316 best_ref= 0;

317 for(ref=0; ref<s->ref_frames; ref++){

318 init_ref(c, current_data, s->last_picture[ref]->data, NULL, block_w*x, block_w*y, 0);

319

320 ref_score= ff_epzs_motion_search(&s->m, &ref_mx, &ref_my, P, 0, /*ref_index*/ 0, last_mv,

321 (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w);

322

323 av_assert2(ref_mx >= c->xmin);

324 av_assert2(ref_mx <= c->xmax);

325 av_assert2(ref_my >= c->ymin);

326 av_assert2(ref_my <= c->ymax);

327

328 ref_score= c->sub_motion_search(&s->m, &ref_mx, &ref_my, ref_score, 0, 0, level-LOG2_MB_SIZE+4, block_w);

329 ref_score= ff_get_mb_score(&s->m, ref_mx, ref_my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0);

330 ref_score+= 2*av_log2(2*ref)*c->penalty_factor;

331 if(s->ref_mvs[ref]){

332 s->ref_mvs[ref][index][0]= ref_mx;

333 s->ref_mvs[ref][index][1]= ref_my;

334 s->ref_scores[ref][index]= ref_score;

335 }

336 if(score > ref_score){

337 score= ref_score;

338 best_ref= ref;

339 mx= ref_mx;

340 my= ref_my;

341 }

342 }

343 //FIXME if mb_cmp != SSE then intra cannot be compared currently and mb_penalty vs. lambda2

344

345 // subpel search

346 base_bits= get_rac_count(&s->c) - 8*(s->c.bytestream - s->c.bytestream_start);

347 pc= s->c;

348 pc.bytestream_start=

349 pc.bytestream= p_buffer; //FIXME end/start? and at the other stoo

350 memcpy(p_state, s->block_state, sizeof(s->block_state));

351

352 if(level!=s->block_max_depth)

353 put_rac(&pc, &p_state[4 + s_context], 1);

354 put_rac(&pc, &p_state[1 + left->type + top->type], 0);

355 if(s->ref_frames > 1)

356 put_symbol(&pc, &p_state[128 + 1024 + 32*ref_context], best_ref, 0);

357 pred_mv(s, &pmx, &pmy, best_ref, left, top, tr);

358 put_symbol(&pc, &p_state[128 + 32*(mx_context + 16*!!best_ref)], mx - pmx, 1);

359 put_symbol(&pc, &p_state[128 + 32*(my_context + 16*!!best_ref)], my - pmy, 1);

360 p_len= pc.bytestream - pc.bytestream_start;

361 score += (s->lambda2*(get_rac_count(&pc)-base_bits))>>FF_LAMBDA_SHIFT;

362

363 block_s= block_w*block_w;

364 sum = pix_sum(current_data[0], stride, block_w, block_w);

365 l= (sum + block_s/2)/block_s;

366 iscore = pix_norm1(current_data[0], stride, block_w) - 2*l*sum + l*l*block_s;

367

368 if (s->nb_planes > 2) {

369 block_s= block_w*block_w>>(s->chroma_h_shift + s->chroma_v_shift);

370 sum = pix_sum(current_data[1], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);

371 cb= (sum + block_s/2)/block_s;

372 // iscore += pix_norm1(&current_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s;

373 sum = pix_sum(current_data[2], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);

374 cr= (sum + block_s/2)/block_s;

375 // iscore += pix_norm1(&current_mb[2][0], uvstride, block_w>>1) - 2*cr*sum + cr*cr*block_s;

376 }else

377 cb = cr = 0;

378

379 ic= s->c;

380 ic.bytestream_start=

381 ic.bytestream= i_buffer; //FIXME end/start? and at the other stoo

382 memcpy(i_state, s->block_state, sizeof(s->block_state));

383 if(level!=s->block_max_depth)

384 put_rac(&ic, &i_state[4 + s_context], 1);

385 put_rac(&ic, &i_state[1 + left->type + top->type], 1);

386 put_symbol(&ic, &i_state[32], l-pl , 1);

387 if (s->nb_planes > 2) {

388 put_symbol(&ic, &i_state[64], cb-pcb, 1);

389 put_symbol(&ic, &i_state[96], cr-pcr, 1);

390 }

391 i_len= ic.bytestream - ic.bytestream_start;

392 iscore += (s->lambda2*(get_rac_count(&ic)-base_bits))>>FF_LAMBDA_SHIFT;

393

394 av_assert1(iscore < 255*255*256 + s->lambda2*10);

395 av_assert1(iscore >= 0);

396 av_assert1(l>=0 && l<=255);

397 av_assert1(pl>=0 && pl<=255);

398

399 if(level==0){

400 int varc= iscore >> 8;

401 int vard= score >> 8;

402 if (vard <= 64 || vard < varc)

403 c->scene_change_score+= ff_sqrt(vard) - ff_sqrt(varc);

404 else

405 c->scene_change_score+= s->m.qscale;

406 }

407

408 if(level!=s->block_max_depth){

409 put_rac(&s->c, &s->block_state[4 + s_context], 0);

410 score2 = encode_q_branch(s, level+1, 2*x+0, 2*y+0);

411 score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+0);

412 score2+= encode_q_branch(s, level+1, 2*x+0, 2*y+1);

413 score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+1);

414 score2+= s->lambda2>>FF_LAMBDA_SHIFT; //FIXME exact split overhead

415

416 if(score2 < score && score2 < iscore)

417 return score2;

418 }

419

420 if(iscore < score){

421 pred_mv(s, &pmx, &pmy, 0, left, top, tr);

422 memcpy(pbbak, i_buffer, i_len);

423 s->c= ic;

424 s->c.bytestream_start= pbbak_start;

425 s->c.bytestream= pbbak + i_len;

426 set_blocks(s, level, x, y, l, cb, cr, pmx, pmy, 0, BLOCK_INTRA);

427 memcpy(s->block_state, i_state, sizeof(s->block_state));

428 return iscore;

429 }else{

430 memcpy(pbbak, p_buffer, p_len);

431 s->c= pc;

432 s->c.bytestream_start= pbbak_start;

433 s->c.bytestream= pbbak + p_len;

434 set_blocks(s, level, x, y, pl, pcb, pcr, mx, my, best_ref, 0);

435 memcpy(s->block_state, p_state, sizeof(s->block_state));

436 return score;

437 }

438 }

439

440 static void encode_q_branch2(SnowContext *s, int level, int x, int y){

441 const int w= s->b_width << s->block_max_depth;

442 const int rem_depth= s->block_max_depth - level;

443 const int index= (x + y*w) << rem_depth;

444 int trx= (x+1)<<rem_depth;

445 BlockNode *b= &s->block[index];

446 const BlockNode *left = x ? &s->block[index-1] : &null_block;

447 const BlockNode *top = y ? &s->block[index-w] : &null_block;

448 const BlockNode *tl = y && x ? &s->block[index-w-1] : left;

449 const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt

450 int pl = left->color[0];

451 int pcb= left->color[1];

452 int pcr= left->color[2];

453 int pmx, pmy;

454 int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);

455 int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 16*!!b->ref;

456 int my_context= av_log2(2*FFABS(left->my - top->my)) + 16*!!b->ref;

457 int s_context= 2*left->level + 2*top->level + tl->level + tr->level;

458

459 if(s->keyframe){

460 set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);

461 return;

462 }

463

464 if(level!=s->block_max_depth){

465 if(same_block(b,b+1) && same_block(b,b+w) && same_block(b,b+w+1)){

466 put_rac(&s->c, &s->block_state[4 + s_context], 1);

467 }else{

468 put_rac(&s->c, &s->block_state[4 + s_context], 0);

469 encode_q_branch2(s, level+1, 2*x+0, 2*y+0);

470 encode_q_branch2(s, level+1, 2*x+1, 2*y+0);

471 encode_q_branch2(s, level+1, 2*x+0, 2*y+1);

472 encode_q_branch2(s, level+1, 2*x+1, 2*y+1);

473 return;

474 }

475 }

476 if(b->type & BLOCK_INTRA){

477 pred_mv(s, &pmx, &pmy, 0, left, top, tr);

478 put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 1);

479 put_symbol(&s->c, &s->block_state[32], b->color[0]-pl , 1);

480 if (s->nb_planes > 2) {

481 put_symbol(&s->c, &s->block_state[64], b->color[1]-pcb, 1);

482 put_symbol(&s->c, &s->block_state[96], b->color[2]-pcr, 1);

483 }

484 set_blocks(s, level, x, y, b->color[0], b->color[1], b->color[2], pmx, pmy, 0, BLOCK_INTRA);

485 }else{

486 pred_mv(s, &pmx, &pmy, b->ref, left, top, tr);

487 put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 0);

488 if(s->ref_frames > 1)

489 put_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], b->ref, 0);

490 put_symbol(&s->c, &s->block_state[128 + 32*mx_context], b->mx - pmx, 1);

491 put_symbol(&s->c, &s->block_state[128 + 32*my_context], b->my - pmy, 1);

492 set_blocks(s, level, x, y, pl, pcb, pcr, b->mx, b->my, b->ref, 0);

493 }

494 }

495

496 static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){

497 int i, x2, y2;

498 Plane *p= &s->plane[plane_index];

499 const int block_size = MB_SIZE >> s->block_max_depth;

500 const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;

501 const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;

502 const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];

503 const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;

504 const int ref_stride= s->current_picture->linesize[plane_index];

505 uint8_t *src= s-> input_picture->data[plane_index];

506 IDWTELEM *dst= (IDWTELEM*)s->m.obmc_scratchpad + plane_index*block_size*block_size*4; //FIXME change to unsigned

507 const int b_stride = s->b_width << s->block_max_depth;

508 const int w= p->width;

509 const int h= p->height;

510 int index= mb_x + mb_y*b_stride;

511 BlockNode *b= &s->block[index];

512 BlockNode backup= *b;

513 int ab=0;

514 int aa=0;

515

516 av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc stuff above

517

518 b->type|= BLOCK_INTRA;

519 b->color[plane_index]= 0;

520 memset(dst, 0, obmc_stride*obmc_stride*sizeof(IDWTELEM));

521

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

523 int mb_x2= mb_x + (i &1) - 1;

524 int mb_y2= mb_y + (i>>1) - 1;

525 int x= block_w*mb_x2 + block_w/2;

526 int y= block_h*mb_y2 + block_h/2;

527

528 add_yblock(s, 0, NULL, dst + (i&1)*block_w + (i>>1)*obmc_stride*block_h, NULL, obmc,

529 x, y, block_w, block_h, w, h, obmc_stride, ref_stride, obmc_stride, mb_x2, mb_y2, 0, 0, plane_index);

530

531 for(y2= FFMAX(y, 0); y2<FFMIN(h, y+block_h); y2++){

532 for(x2= FFMAX(x, 0); x2<FFMIN(w, x+block_w); x2++){

533 int index= x2-(block_w*mb_x - block_w/2) + (y2-(block_h*mb_y - block_h/2))*obmc_stride;

534 int obmc_v= obmc[index];

535 int d;

536 if(y<0) obmc_v += obmc[index + block_h*obmc_stride];

537 if(x<0) obmc_v += obmc[index + block_w];

538 if(y+block_h>h) obmc_v += obmc[index - block_h*obmc_stride];

539 if(x+block_w>w) obmc_v += obmc[index - block_w];

540 //FIXME precalculate this or simplify it somehow else

541

542 d = -dst[index] + (1<<(FRAC_BITS-1));

543 dst[index] = d;

544 ab += (src[x2 + y2*ref_stride] - (d>>FRAC_BITS)) * obmc_v;

545 aa += obmc_v * obmc_v; //FIXME precalculate this

546 }

547 }

548 }

549 *b= backup;

550

551 return av_clip_uint8( ROUNDED_DIV(ab<<LOG2_OBMC_MAX, aa) ); //FIXME we should not need clipping

552 }

553

554 static inline int get_block_bits(SnowContext *s, int x, int y, int w){

555 const int b_stride = s->b_width << s->block_max_depth;

556 const int b_height = s->b_height<< s->block_max_depth;

557 int index= x + y*b_stride;

558 const BlockNode *b = &s->block[index];

559 const BlockNode *left = x ? &s->block[index-1] : &null_block;

560 const BlockNode *top = y ? &s->block[index-b_stride] : &null_block;

561 const BlockNode *tl = y && x ? &s->block[index-b_stride-1] : left;

562 const BlockNode *tr = y && x+w<b_stride ? &s->block[index-b_stride+w] : tl;

563 int dmx, dmy;

564 // int mx_context= av_log2(2*FFABS(left->mx - top->mx));

565 // int my_context= av_log2(2*FFABS(left->my - top->my));

566

567 if(x<0 || x>=b_stride || y>=b_height)

568 return 0;

569 /*

570 1 0 0

571 01X 1-2 1

572 001XX 3-6 2-3

573 0001XXX 7-14 4-7

574 00001XXXX 15-30 8-15

575 */

576 //FIXME try accurate rate

577 //FIXME intra and inter predictors if surrounding blocks are not the same type

578 if(b->type & BLOCK_INTRA){

579 return 3+2*( av_log2(2*FFABS(left->color[0] - b->color[0]))

580 + av_log2(2*FFABS(left->color[1] - b->color[1]))

581 + av_log2(2*FFABS(left->color[2] - b->color[2])));

582 }else{

583 pred_mv(s, &dmx, &dmy, b->ref, left, top, tr);

584 dmx-= b->mx;

585 dmy-= b->my;

586 return 2*(1 + av_log2(2*FFABS(dmx)) //FIXME kill the 2* can be merged in lambda

587 + av_log2(2*FFABS(dmy))

588 + av_log2(2*b->ref));

589 }

590 }

591

592 static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, uint8_t (*obmc_edged)[MB_SIZE * 2]){

593 Plane *p= &s->plane[plane_index];

594 const int block_size = MB_SIZE >> s->block_max_depth;

595 const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;

596 const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;

597 const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;

598 const int ref_stride= s->current_picture->linesize[plane_index];

599 uint8_t *dst= s->current_picture->data[plane_index];

600 uint8_t *src= s-> input_picture->data[plane_index];

601 IDWTELEM *pred= (IDWTELEM*)s->m.obmc_scratchpad + plane_index*block_size*block_size*4;

602 uint8_t *cur = s->scratchbuf;

603 uint8_t *tmp = s->emu_edge_buffer;

604 const int b_stride = s->b_width << s->block_max_depth;

605 const int b_height = s->b_height<< s->block_max_depth;

606 const int w= p->width;

607 const int h= p->height;

608 int distortion;

609 int rate= 0;

610 const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);

611 int sx= block_w*mb_x - block_w/2;

612 int sy= block_h*mb_y - block_h/2;

613 int x0= FFMAX(0,-sx);

614 int y0= FFMAX(0,-sy);

615 int x1= FFMIN(block_w*2, w-sx);

616 int y1= FFMIN(block_h*2, h-sy);

617 int i,x,y;

618

619 av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below chckinhg only block_w

620

621 ff_snow_pred_block(s, cur, tmp, ref_stride, sx, sy, block_w*2, block_h*2, &s->block[mb_x + mb_y*b_stride], plane_index, w, h);

622

623 for(y=y0; y<y1; y++){

624 const uint8_t *obmc1= obmc_edged[y];

625 const IDWTELEM *pred1 = pred + y*obmc_stride;

626 uint8_t *cur1 = cur + y*ref_stride;

627 uint8_t *dst1 = dst + sx + (sy+y)*ref_stride;

628 for(x=x0; x<x1; x++){

629 #if FRAC_BITS >= LOG2_OBMC_MAX

630 int v = (cur1[x] * obmc1[x]) << (FRAC_BITS - LOG2_OBMC_MAX);

631 #else

632 int v = (cur1[x] * obmc1[x] + (1<<(LOG2_OBMC_MAX - FRAC_BITS-1))) >> (LOG2_OBMC_MAX - FRAC_BITS);

633 #endif

634 v = (v + pred1[x]) >> FRAC_BITS;

635 if(v&(~255)) v= ~(v>>31);

636 dst1[x] = v;

637 }

638 }

639

640 /* copy the regions where obmc[] = (uint8_t)256 */

641 if(LOG2_OBMC_MAX == 8

642 && (mb_x == 0 || mb_x == b_stride-1)

643 && (mb_y == 0 || mb_y == b_height-1)){

644 if(mb_x == 0)

645 x1 = block_w;

646 else

647 x0 = block_w;

648 if(mb_y == 0)

649 y1 = block_h;

650 else

651 y0 = block_h;

652 for(y=y0; y<y1; y++)

653 memcpy(dst + sx+x0 + (sy+y)*ref_stride, cur + x0 + y*ref_stride, x1-x0);

654 }

655

656 if(block_w==16){

657 /* FIXME rearrange dsputil to fit 32x32 cmp functions */

658 /* FIXME check alignment of the cmp wavelet vs the encoding wavelet */

659 /* FIXME cmps overlap but do not cover the wavelet's whole support.

660 * So improving the score of one block is not strictly guaranteed

661 * to improve the score of the whole frame, thus iterative motion

662 * estimation does not always converge. */

663 if(s->avctx->me_cmp == FF_CMP_W97)

664 distortion = ff_w97_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);

665 else if(s->avctx->me_cmp == FF_CMP_W53)

666 distortion = ff_w53_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);

667 else{

668 distortion = 0;

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

670 int off = sx+16*(i&1) + (sy+16*(i>>1))*ref_stride;

671 distortion += s->mecc.me_cmp[0](&s->m, src + off, dst + off, ref_stride, 16);

672 }

673 }

674 }else{

675 av_assert2(block_w==8);

676 distortion = s->mecc.me_cmp[0](&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, block_w*2);

677 }

678

679 if(plane_index==0){

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

681 /* ..RRr

682 * .RXx.

683 * rxx..

684 */

685 rate += get_block_bits(s, mb_x + (i&1) - (i>>1), mb_y + (i>>1), 1);

686 }

687 if(mb_x == b_stride-2)

688 rate += get_block_bits(s, mb_x + 1, mb_y + 1, 1);

689 }

690 return distortion + rate*penalty_factor;

691 }

692

693 static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){

694 int i, y2;

695 Plane *p= &s->plane[plane_index];

696 const int block_size = MB_SIZE >> s->block_max_depth;

697 const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;

698 const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;

699 const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];

700 const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;

701 const int ref_stride= s->current_picture->linesize[plane_index];

702 uint8_t *dst= s->current_picture->data[plane_index];

703 uint8_t *src= s-> input_picture->data[plane_index];

704 //FIXME zero_dst is const but add_yblock changes dst if add is 0 (this is never the case for dst=zero_dst

705 // const has only been removed from zero_dst to suppress a warning

706 static IDWTELEM zero_dst[4096]; //FIXME

707 const int b_stride = s->b_width << s->block_max_depth;

708 const int w= p->width;

709 const int h= p->height;

710 int distortion= 0;

711 int rate= 0;

712 const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);

713

714 av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below

715

716 for(i=0; i<9; i++){

717 int mb_x2= mb_x + (i%3) - 1;

718 int mb_y2= mb_y + (i/3) - 1;

719 int x= block_w*mb_x2 + block_w/2;

720 int y= block_h*mb_y2 + block_h/2;

721

722 add_yblock(s, 0, NULL, zero_dst, dst, obmc,

723 x, y, block_w, block_h, w, h, /*dst_stride*/0, ref_stride, obmc_stride, mb_x2, mb_y2, 1, 1, plane_index);

724

725 //FIXME find a cleaner/simpler way to skip the outside stuff

726 for(y2= y; y2<0; y2++)

727 memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);

728 for(y2= h; y2<y+block_h; y2++)

729 memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);

730 if(x<0){

731 for(y2= y; y2<y+block_h; y2++)

732 memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, -x);

733 }

734 if(x+block_w > w){

735 for(y2= y; y2<y+block_h; y2++)

736 memcpy(dst + w + y2*ref_stride, src + w + y2*ref_stride, x+block_w - w);

737 }

738

739 av_assert1(block_w== 8 || block_w==16);

740 distortion += s->mecc.me_cmp[block_w==8](&s->m, src + x + y*ref_stride, dst + x + y*ref_stride, ref_stride, block_h);

741 }

742

743 if(plane_index==0){

744 BlockNode *b= &s->block[mb_x+mb_y*b_stride];

745 int merged= same_block(b,b+1) && same_block(b,b+b_stride) && same_block(b,b+b_stride+1);

746

747 /* ..RRRr

748 * .RXXx.

749 * .RXXx.

750 * rxxx.

751 */

752 if(merged)

753 rate = get_block_bits(s, mb_x, mb_y, 2);

754 for(i=merged?4:0; i<9; i++){

755 static const int dxy[9][2] = {{0,0},{1,0},{0,1},{1,1},{2,0},{2,1},{-1,2},{0,2},{1,2}};

756 rate += get_block_bits(s, mb_x + dxy[i][0], mb_y + dxy[i][1], 1);

757 }

758 }

759 return distortion + rate*penalty_factor;

760 }

761

762 static int encode_subband_c0run(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){

763 const int w= b->width;

764 const int h= b->height;

765 int x, y;

766

767 if(1){

768 int run=0;

769 int *runs = s->run_buffer;

770 int run_index=0;

771 int max_index;

772

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

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

775 int v, p=0;

776 int /*ll=0, */l=0, lt=0, t=0, rt=0;

777 v= src[x + y*stride];

778

779 if(y){

780 t= src[x + (y-1)*stride];

781 if(x){

782 lt= src[x - 1 + (y-1)*stride];

783 }

784 if(x + 1 < w){

785 rt= src[x + 1 + (y-1)*stride];

786 }

787 }

788 if(x){

789 l= src[x - 1 + y*stride];

790 /*if(x > 1){

791 if(orientation==1) ll= src[y + (x-2)*stride];

792 else ll= src[x - 2 + y*stride];

793 }*/

794 }

795 if(parent){

796 int px= x>>1;

797 int py= y>>1;

798 if(px<b->parent->width && py<b->parent->height)

799 p= parent[px + py*2*stride];

800 }

801 if(!(/*ll|*/l|lt|t|rt|p)){

802 if(v){

803 runs[run_index++]= run;

804 run=0;

805 }else{

806 run++;

807 }

808 }

809 }

810 }

811 max_index= run_index;

812 runs[run_index++]= run;

813 run_index=0;

814 run= runs[run_index++];

815

816 put_symbol2(&s->c, b->state[30], max_index, 0);

817 if(run_index <= max_index)

818 put_symbol2(&s->c, b->state[1], run, 3);

819

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

821 if(s->c.bytestream_end - s->c.bytestream < w*40){

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

823 return -1;

824 }

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

826 int v, p=0;

827 int /*ll=0, */l=0, lt=0, t=0, rt=0;

828 v= src[x + y*stride];

829

830 if(y){

831 t= src[x + (y-1)*stride];

832 if(x){

833 lt= src[x - 1 + (y-1)*stride];

834 }

835 if(x + 1 < w){

836 rt= src[x + 1 + (y-1)*stride];

837 }

838 }

839 if(x){

840 l= src[x - 1 + y*stride];

841 /*if(x > 1){

842 if(orientation==1) ll= src[y + (x-2)*stride];

843 else ll= src[x - 2 + y*stride];

844 }*/

845 }

846 if(parent){

847 int px= x>>1;

848 int py= y>>1;

849 if(px<b->parent->width && py<b->parent->height)

850 p= parent[px + py*2*stride];

851 }

852 if(/*ll|*/l|lt|t|rt|p){

853 int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));

854

855 put_rac(&s->c, &b->state[0][context], !!v);

856 }else{

857 if(!run){

858 run= runs[run_index++];

859

860 if(run_index <= max_index)

861 put_symbol2(&s->c, b->state[1], run, 3);

862 av_assert2(v);

863 }else{

864 run--;

865 av_assert2(!v);

866 }

867 }

868 if(v){

869 int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));

870 int l2= 2*FFABS(l) + (l<0);

871 int t2= 2*FFABS(t) + (t<0);

872

873 put_symbol2(&s->c, b->state[context + 2], FFABS(v)-1, context-4);

874 put_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l2&0xFF] + 3*ff_quant3bA[t2&0xFF]], v<0);

875 }

876 }

877 }

878 }

879 return 0;

880 }

881

882 static int encode_subband(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){

883 // encode_subband_qtree(s, b, src, parent, stride, orientation);

884 // encode_subband_z0run(s, b, src, parent, stride, orientation);

885 return encode_subband_c0run(s, b, src, parent, stride, orientation);

886 // encode_subband_dzr(s, b, src, parent, stride, orientation);

887 }

888

889 static av_always_inline int check_block(SnowContext *s, int mb_x, int mb_y, int p[3], int intra, uint8_t (*obmc_edged)[MB_SIZE * 2], int *best_rd){

890 const int b_stride= s->b_width << s->block_max_depth;

891 BlockNode *block= &s->block[mb_x + mb_y * b_stride];

892 BlockNode backup= *block;

893 unsigned value;

894 int rd, index;

895

896 av_assert2(mb_x>=0 && mb_y>=0);

897 av_assert2(mb_x<b_stride);

898

899 if(intra){

900 block->color[0] = p[0];

901 block->color[1] = p[1];

902 block->color[2] = p[2];

903 block->type |= BLOCK_INTRA;

904 }else{

905 index= (p[0] + 31*p[1]) & (ME_CACHE_SIZE-1);

906 value= s->me_cache_generation + (p[0]>>10) + (p[1]<<6) + (block->ref<<12);

907 if(s->me_cache[index] == value)

908 return 0;

909 s->me_cache[index]= value;

910

911 block->mx= p[0];

912 block->my= p[1];

913 block->type &= ~BLOCK_INTRA;

914 }

915

916 rd= get_block_rd(s, mb_x, mb_y, 0, obmc_edged);

917

918 //FIXME chroma

919 if(rd < *best_rd){

920 *best_rd= rd;

921 return 1;

922 }else{

923 *block= backup;

924 return 0;

925 }

926 }

927

928 /* special case for int[2] args we discard afterwards,

929 * fixes compilation problem with gcc 2.95 */

930 static av_always_inline int check_block_inter(SnowContext *s, int mb_x, int mb_y, int p0, int p1, uint8_t (*obmc_edged)[MB_SIZE * 2], int *best_rd){

931 int p[2] = {p0, p1};

932 return check_block(s, mb_x, mb_y, p, 0, obmc_edged, best_rd);

933 }

934

935 static av_always_inline int check_4block_inter(SnowContext *s, int mb_x, int mb_y, int p0, int p1, int ref, int *best_rd){

936 const int b_stride= s->b_width << s->block_max_depth;

937 BlockNode *block= &s->block[mb_x + mb_y * b_stride];

938 BlockNode backup[4];

939 unsigned value;

940 int rd, index;

941

942 /* We don't initialize backup[] during variable declaration, because

943 * that fails to compile on MSVC: "cannot convert from 'BlockNode' to

944 * 'int16_t'". */

945 backup[0] = block[0];

946 backup[1] = block[1];

947 backup[2] = block[b_stride];

948 backup[3] = block[b_stride + 1];

949

950 av_assert2(mb_x>=0 && mb_y>=0);

951 av_assert2(mb_x<b_stride);

952 av_assert2(((mb_x|mb_y)&1) == 0);

953

954 index= (p0 + 31*p1) & (ME_CACHE_SIZE-1);

955 value= s->me_cache_generation + (p0>>10) + (p1<<6) + (block->ref<<12);

956 if(s->me_cache[index] == value)

957 return 0;

958 s->me_cache[index]= value;

959

960 block->mx= p0;

961 block->my= p1;

962 block->ref= ref;

963 block->type &= ~BLOCK_INTRA;

964 block[1]= block[b_stride]= block[b_stride+1]= *block;

965

966 rd= get_4block_rd(s, mb_x, mb_y, 0);

967

968 //FIXME chroma

969 if(rd < *best_rd){

970 *best_rd= rd;

971 return 1;

972 }else{

973 block[0]= backup[0];

974 block[1]= backup[1];

975 block[b_stride]= backup[2];

976 block[b_stride+1]= backup[3];

977 return 0;

978 }

979 }

980

981 static void iterative_me(SnowContext *s){

982 int pass, mb_x, mb_y;

983 const int b_width = s->b_width << s->block_max_depth;

984 const int b_height= s->b_height << s->block_max_depth;

985 const int b_stride= b_width;

986 int color[3];

987

988 {

989 RangeCoder r = s->c;

990 uint8_t state[sizeof(s->block_state)];

991 memcpy(state, s->block_state, sizeof(s->block_state));

992 for(mb_y= 0; mb_y<s->b_height; mb_y++)

993 for(mb_x= 0; mb_x<s->b_width; mb_x++)

994 encode_q_branch(s, 0, mb_x, mb_y);

995 s->c = r;

996 memcpy(s->block_state, state, sizeof(s->block_state));

997 }

998

999 for(pass=0; pass<25; pass++){

1000 int change= 0;

1001

1002 for(mb_y= 0; mb_y<b_height; mb_y++){

1003 for(mb_x= 0; mb_x<b_width; mb_x++){

1004 int dia_change, i, j, ref;

1005 int best_rd= INT_MAX, ref_rd;

1006 BlockNode backup, ref_b;

1007 const int index= mb_x + mb_y * b_stride;

1008 BlockNode *block= &s->block[index];

1009 BlockNode *tb = mb_y ? &s->block[index-b_stride ] : NULL;

1010 BlockNode *lb = mb_x ? &s->block[index -1] : NULL;

1011 BlockNode *rb = mb_x+1<b_width ? &s->block[index +1] : NULL;

1012 BlockNode *bb = mb_y+1<b_height ? &s->block[index+b_stride ] : NULL;

1013 BlockNode *tlb= mb_x && mb_y ? &s->block[index-b_stride-1] : NULL;

1014 BlockNode *trb= mb_x+1<b_width && mb_y ? &s->block[index-b_stride+1] : NULL;

1015 BlockNode *blb= mb_x && mb_y+1<b_height ? &s->block[index+b_stride-1] : NULL;

1016 BlockNode *brb= mb_x+1<b_width && mb_y+1<b_height ? &s->block[index+b_stride+1] : NULL;

1017 const int b_w= (MB_SIZE >> s->block_max_depth);

1018 uint8_t obmc_edged[MB_SIZE * 2][MB_SIZE * 2];

1019

1020 if(pass && (block->type & BLOCK_OPT))

1021 continue;

1022 block->type |= BLOCK_OPT;

1023

1024 backup= *block;

1025

1026 if(!s->me_cache_generation)

1027 memset(s->me_cache, 0, sizeof(s->me_cache));

1028 s->me_cache_generation += 1<<22;

1029

1030 //FIXME precalculate

1031 {

1032 int x, y;

1033 for (y = 0; y < b_w * 2; y++)

1034 memcpy(obmc_edged[y], ff_obmc_tab[s->block_max_depth] + y * b_w * 2, b_w * 2);

1035 if(mb_x==0)

1036 for(y=0; y<b_w*2; y++)

1037 memset(obmc_edged[y], obmc_edged[y][0] + obmc_edged[y][b_w-1], b_w);

1038 if(mb_x==b_stride-1)

1039 for(y=0; y<b_w*2; y++)

1040 memset(obmc_edged[y]+b_w, obmc_edged[y][b_w] + obmc_edged[y][b_w*2-1], b_w);

1041 if(mb_y==0){

1042 for(x=0; x<b_w*2; x++)

1043 obmc_edged[0][x] += obmc_edged[b_w-1][x];

1044 for(y=1; y<b_w; y++)

1045 memcpy(obmc_edged[y], obmc_edged[0], b_w*2);

1046 }

1047 if(mb_y==b_height-1){

1048 for(x=0; x<b_w*2; x++)

1049 obmc_edged[b_w*2-1][x] += obmc_edged[b_w][x];

1050 for(y=b_w; y<b_w*2-1; y++)

1051 memcpy(obmc_edged[y], obmc_edged[b_w*2-1], b_w*2);

1052 }

1053 }

1054

1055 //skip stuff outside the picture

1056 if(mb_x==0 || mb_y==0 || mb_x==b_width-1 || mb_y==b_height-1){

1057 uint8_t *src= s-> input_picture->data[0];

1058 uint8_t *dst= s->current_picture->data[0];

1059 const int stride= s->current_picture->linesize[0];

1060 const int block_w= MB_SIZE >> s->block_max_depth;

1061 const int block_h= MB_SIZE >> s->block_max_depth;

1062 const int sx= block_w*mb_x - block_w/2;

1063 const int sy= block_h*mb_y - block_h/2;

1064 const int w= s->plane[0].width;

1065 const int h= s->plane[0].height;

1066 int y;

1067

1068 for(y=sy; y<0; y++)

1069 memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);

1070 for(y=h; y<sy+block_h*2; y++)

1071 memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);

1072 if(sx<0){

1073 for(y=sy; y<sy+block_h*2; y++)

1074 memcpy(dst + sx + y*stride, src + sx + y*stride, -sx);

1075 }

1076 if(sx+block_w*2 > w){

1077 for(y=sy; y<sy+block_h*2; y++)

1078 memcpy(dst + w + y*stride, src + w + y*stride, sx+block_w*2 - w);

1079 }

1080 }

1081

1082 // intra(black) = neighbors' contribution to the current block

1083 for(i=0; i < s->nb_planes; i++)

1084 color[i]= get_dc(s, mb_x, mb_y, i);

1085

1086 // get previous score (cannot be cached due to OBMC)

1087 if(pass > 0 && (block->type&BLOCK_INTRA)){

1088 int color0[3]= {block->color[0], block->color[1], block->color[2]};

1089 check_block(s, mb_x, mb_y, color0, 1, obmc_edged, &best_rd);

1090 }else

1091 check_block_inter(s, mb_x, mb_y, block->mx, block->my, obmc_edged, &best_rd);

1092

1093 ref_b= *block;

1094 ref_rd= best_rd;

1095 for(ref=0; ref < s->ref_frames; ref++){

1096 int16_t (*mvr)[2]= &s->ref_mvs[ref][index];

1097 if(s->ref_scores[ref][index] > s->ref_scores[ref_b.ref][index]*3/2) //FIXME tune threshold

1098 continue;

1099 block->ref= ref;

1100 best_rd= INT_MAX;

1101

1102 check_block_inter(s, mb_x, mb_y, mvr[0][0], mvr[0][1], obmc_edged, &best_rd);

1103 check_block_inter(s, mb_x, mb_y, 0, 0, obmc_edged, &best_rd);

1104 if(tb)

1105 check_block_inter(s, mb_x, mb_y, mvr[-b_stride][0], mvr[-b_stride][1], obmc_edged, &best_rd);

1106 if(lb)

1107 check_block_inter(s, mb_x, mb_y, mvr[-1][0], mvr[-1][1], obmc_edged, &best_rd);

1108 if(rb)

1109 check_block_inter(s, mb_x, mb_y, mvr[1][0], mvr[1][1], obmc_edged, &best_rd);

1110 if(bb)

1111 check_block_inter(s, mb_x, mb_y, mvr[b_stride][0], mvr[b_stride][1], obmc_edged, &best_rd);

1112

1113 /* fullpel ME */

1114 //FIXME avoid subpel interpolation / round to nearest integer

1115 do{

1116 dia_change=0;

1117 for(i=0; i<FFMAX(s->avctx->dia_size, 1); i++){

1118 for(j=0; j<i; j++){

1119 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+4*(i-j), block->my+(4*j), obmc_edged, &best_rd);

1120 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx-4*(i-j), block->my-(4*j), obmc_edged, &best_rd);

1121 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+4*(i-j), block->my-(4*j), obmc_edged, &best_rd);

1122 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx-4*(i-j), block->my+(4*j), obmc_edged, &best_rd);

1123 }

1124 }

1125 }while(dia_change);

1126 /* subpel ME */

1127 do{

1128 static const int square[8][2]= {{+1, 0},{-1, 0},{ 0,+1},{ 0,-1},{+1,+1},{-1,-1},{+1,-1},{-1,+1},};

1129 dia_change=0;

1130 for(i=0; i<8; i++)

1131 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+square[i][0], block->my+square[i][1], obmc_edged, &best_rd);

1132 }while(dia_change);

1133 //FIXME or try the standard 2 pass qpel or similar

1134

1135 mvr[0][0]= block->mx;

1136 mvr[0][1]= block->my;

1137 if(ref_rd > best_rd){

1138 ref_rd= best_rd;

1139 ref_b= *block;

1140 }

1141 }

1142 best_rd= ref_rd;

1143 *block= ref_b;

1144 check_block(s, mb_x, mb_y, color, 1, obmc_edged, &best_rd);

1145 //FIXME RD style color selection

1146 if(!same_block(block, &backup)){

1147 if(tb ) tb ->type &= ~BLOCK_OPT;

1148 if(lb ) lb ->type &= ~BLOCK_OPT;

1149 if(rb ) rb ->type &= ~BLOCK_OPT;

1150 if(bb ) bb ->type &= ~BLOCK_OPT;

1151 if(tlb) tlb->type &= ~BLOCK_OPT;

1152 if(trb) trb->type &= ~BLOCK_OPT;

1153 if(blb) blb->type &= ~BLOCK_OPT;

1154 if(brb) brb->type &= ~BLOCK_OPT;

1155 change ++;

1156 }

1157 }

1158 }

1159 av_log(s->avctx, AV_LOG_ERROR, "pass:%d changed:%d\n", pass, change);

1160 if(!change)

1161 break;

1162 }

1163

1164 if(s->block_max_depth == 1){

1165 int change= 0;

1166 for(mb_y= 0; mb_y<b_height; mb_y+=2){

1167 for(mb_x= 0; mb_x<b_width; mb_x+=2){

1168 int i;

1169 int best_rd, init_rd;

1170 const int index= mb_x + mb_y * b_stride;

1171 BlockNode *b[4];

1172

1173 b[0]= &s->block[index];

1174 b[1]= b[0]+1;

1175 b[2]= b[0]+b_stride;

1176 b[3]= b[2]+1;

1177 if(same_block(b[0], b[1]) &&

1178 same_block(b[0], b[2]) &&

1179 same_block(b[0], b[3]))

1180 continue;

1181

1182 if(!s->me_cache_generation)

1183 memset(s->me_cache, 0, sizeof(s->me_cache));

1184 s->me_cache_generation += 1<<22;

1185

1186 init_rd= best_rd= get_4block_rd(s, mb_x, mb_y, 0);

1187

1188 //FIXME more multiref search?

1189 check_4block_inter(s, mb_x, mb_y,

1190 (b[0]->mx + b[1]->mx + b[2]->mx + b[3]->mx + 2) >> 2,

1191 (b[0]->my + b[1]->my + b[2]->my + b[3]->my + 2) >> 2, 0, &best_rd);

1192

1193 for(i=0; i<4; i++)

1194 if(!(b[i]->type&BLOCK_INTRA))

1195 check_4block_inter(s, mb_x, mb_y, b[i]->mx, b[i]->my, b[i]->ref, &best_rd);

1196

1197 if(init_rd != best_rd)

1198 change++;

1199 }

1200 }

1201 av_log(s->avctx, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4);

1202 }

1203 }

1204

1205 static void encode_blocks(SnowContext *s, int search){

1206 int x, y;

1207 int w= s->b_width;

1208 int h= s->b_height;

1209

1210 if(s->avctx->me_method == ME_ITER && !s->keyframe && search)

1211 iterative_me(s);

1212

1213 for(y=0; y<h; y++){

1214 if(s->c.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit

1215 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");

1216 return;

1217 }

1218 for(x=0; x<w; x++){

1219 if(s->avctx->me_method == ME_ITER || !search)

1220 encode_q_branch2(s, 0, x, y);

1221 else

1222 encode_q_branch (s, 0, x, y);

1223 }

1224 }

1225 }

1226

1227 static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias){

1228 const int w= b->width;

1229 const int h= b->height;

1230 const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);

1231 const int qmul= ff_qexp[qlog&(QROOT-1)]<<((qlog>>QSHIFT) + ENCODER_EXTRA_BITS);

1232 int x,y, thres1, thres2;

1233

1234 if(s->qlog == LOSSLESS_QLOG){

1235 for(y=0; y<h; y++)

1236 for(x=0; x<w; x++)

1237 dst[x + y*stride]= src[x + y*stride];

1238 return;

1239 }

1240

1241 bias= bias ? 0 : (3*qmul)>>3;

1242 thres1= ((qmul - bias)>>QEXPSHIFT) - 1;

1243 thres2= 2*thres1;

1244

1245 if(!bias){

1246 for(y=0; y<h; y++){

1247 for(x=0; x<w; x++){

1248 int i= src[x + y*stride];

1249

1250 if((unsigned)(i+thres1) > thres2){

1251 if(i>=0){

1252 i<<= QEXPSHIFT;

1253 i/= qmul; //FIXME optimize

1254 dst[x + y*stride]= i;

1255 }else{

1256 i= -i;

1257 i<<= QEXPSHIFT;

1258 i/= qmul; //FIXME optimize

1259 dst[x + y*stride]= -i;

1260 }

1261 }else

1262 dst[x + y*stride]= 0;

1263 }

1264 }

1265 }else{

1266 for(y=0; y<h; y++){

1267 for(x=0; x<w; x++){

1268 int i= src[x + y*stride];

1269

1270 if((unsigned)(i+thres1) > thres2){

1271 if(i>=0){

1272 i<<= QEXPSHIFT;

1273 i= (i + bias) / qmul; //FIXME optimize

1274 dst[x + y*stride]= i;

1275 }else{

1276 i= -i;

1277 i<<= QEXPSHIFT;

1278 i= (i + bias) / qmul; //FIXME optimize

1279 dst[x + y*stride]= -i;

1280 }

1281 }else

1282 dst[x + y*stride]= 0;

1283 }

1284 }

1285 }

1286 }

1287

1288 static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride){

1289 const int w= b->width;

1290 const int h= b->height;

1291 const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);

1292 const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);

1293 const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;

1294 int x,y;

1295

1296 if(s->qlog == LOSSLESS_QLOG) return;

1297

1298 for(y=0; y<h; y++){

1299 for(x=0; x<w; x++){

1300 int i= src[x + y*stride];

1301 if(i<0){

1302 src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias

1303 }else if(i>0){

1304 src[x + y*stride]= (( i*qmul + qadd)>>(QEXPSHIFT));

1305 }

1306 }

1307 }

1308 }

1309

1310 static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){

1311 const int w= b->width;

1312 const int h= b->height;

1313 int x,y;

1314

1315 for(y=h-1; y>=0; y--){

1316 for(x=w-1; x>=0; x--){

1317 int i= x + y*stride;

1318

1319 if(x){

1320 if(use_median){

1321 if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);

1322 else src[i] -= src[i - 1];

1323 }else{

1324 if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);

1325 else src[i] -= src[i - 1];

1326 }

1327 }else{

1328 if(y) src[i] -= src[i - stride];

1329 }

1330 }

1331 }

1332 }

1333

1334 static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){

1335 const int w= b->width;

1336 const int h= b->height;

1337 int x,y;

1338

1339 for(y=0; y<h; y++){

1340 for(x=0; x<w; x++){

1341 int i= x + y*stride;

1342

1343 if(x){

1344 if(use_median){

1345 if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);

1346 else src[i] += src[i - 1];

1347 }else{

1348 if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);

1349 else src[i] += src[i - 1];

1350 }

1351 }else{

1352 if(y) src[i] += src[i - stride];

1353 }

1354 }

1355 }

1356 }

1357

1358 static void encode_qlogs(SnowContext *s){

1359 int plane_index, level, orientation;

1360

1361 for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){

1362 for(level=0; level<s->spatial_decomposition_count; level++){

1363 for(orientation=level ? 1:0; orientation<4; orientation++){

1364 if(orientation==2) continue;

1365 put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1);

1366 }

1367 }

1368 }

1369 }

1370

1371 static void encode_header(SnowContext *s){

1372 int plane_index, i;

1373 uint8_t kstate[32];

1374

1375 memset(kstate, MID_STATE, sizeof(kstate));

1376

1377 put_rac(&s->c, kstate, s->keyframe);

1378 if(s->keyframe || s->always_reset){

1379 ff_snow_reset_contexts(s);

1380 s->last_spatial_decomposition_type=

1381 s->last_qlog=

1382 s->last_qbias=

1383 s->last_mv_scale=

1384 s->last_block_max_depth= 0;

1385 for(plane_index=0; plane_index<2; plane_index++){

1386 Plane *p= &s->plane[plane_index];

1387 p->last_htaps=0;

1388 p->last_diag_mc=0;

1389 memset(p->last_hcoeff, 0, sizeof(p->last_hcoeff));

1390 }

1391 }

1392 if(s->keyframe){

1393 put_symbol(&s->c, s->header_state, s->version, 0);

1394 put_rac(&s->c, s->header_state, s->always_reset);

1395 put_symbol(&s->c, s->header_state, s->temporal_decomposition_type, 0);

1396 put_symbol(&s->c, s->header_state, s->temporal_decomposition_count, 0);

1397 put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);

1398 put_symbol(&s->c, s->header_state, s->colorspace_type, 0);

1399 if (s->nb_planes > 2) {

1400 put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0);

1401 put_symbol(&s->c, s->header_state, s->chroma_v_shift, 0);

1402 }

1403 put_rac(&s->c, s->header_state, s->spatial_scalability);

1404 // put_rac(&s->c, s->header_state, s->rate_scalability);

1405 put_symbol(&s->c, s->header_state, s->max_ref_frames-1, 0);

1406

1407 encode_qlogs(s);

1408 }

1409

1410 if(!s->keyframe){

1411 int update_mc=0;

1412 for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){

1413 Plane *p= &s->plane[plane_index];

1414 update_mc |= p->last_htaps != p->htaps;

1415 update_mc |= p->last_diag_mc != p->diag_mc;

1416 update_mc |= !!memcmp(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));

1417 }

1418 put_rac(&s->c, s->header_state, update_mc);

1419 if(update_mc){

1420 for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){

1421 Plane *p= &s->plane[plane_index];

1422 put_rac(&s->c, s->header_state, p->diag_mc);

1423 put_symbol(&s->c, s->header_state, p->htaps/2-1, 0);

1424 for(i= p->htaps/2; i; i--)

1425 put_symbol(&s->c, s->header_state, FFABS(p->hcoeff[i]), 0);

1426 }

1427 }

1428 if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){

1429 put_rac(&s->c, s->header_state, 1);

1430 put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);

1431 encode_qlogs(s);

1432 }else

1433 put_rac(&s->c, s->header_state, 0);

1434 }

1435

1436 put_symbol(&s->c, s->header_state, s->spatial_decomposition_type - s->last_spatial_decomposition_type, 1);

1437 put_symbol(&s->c, s->header_state, s->qlog - s->last_qlog , 1);

1438 put_symbol(&s->c, s->header_state, s->mv_scale - s->last_mv_scale, 1);

1439 put_symbol(&s->c, s->header_state, s->qbias - s->last_qbias , 1);

1440 put_symbol(&s->c, s->header_state, s->block_max_depth - s->last_block_max_depth, 1);

1441

1442 }

1443

1444 static void update_last_header_values(SnowContext *s){

1445 int plane_index;

1446

1447 if(!s->keyframe){

1448 for(plane_index=0; plane_index<2; plane_index++){

1449 Plane *p= &s->plane[plane_index];

1450 p->last_diag_mc= p->diag_mc;

1451 p->last_htaps = p->htaps;

1452 memcpy(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));

1453 }

1454 }

1455

1456 s->last_spatial_decomposition_type = s->spatial_decomposition_type;

1457 s->last_qlog = s->qlog;

1458 s->last_qbias = s->qbias;

1459 s->last_mv_scale = s->mv_scale;

1460 s->last_block_max_depth = s->block_max_depth;

1461 s->last_spatial_decomposition_count = s->spatial_decomposition_count;

1462 }

1463

1464 static int qscale2qlog(int qscale){

1465 return rint(QROOT*log2(qscale / (float)FF_QP2LAMBDA))

1466 + 61*QROOT/8; ///< 64 > 60

1467 }

1468

1469 static int ratecontrol_1pass(SnowContext *s, AVFrame *pict)

1470 {

1471 /* Estimate the frame's complexity as a sum of weighted dwt coefficients.

1472 * FIXME we know exact mv bits at this point,

1473 * but ratecontrol isn't set up to include them. */

1474 uint32_t coef_sum= 0;

1475 int level, orientation, delta_qlog;

1476

1477 for(level=0; level<s->spatial_decomposition_count; level++){

1478 for(orientation=level ? 1 : 0; orientation<4; orientation++){

1479 SubBand *b= &s->plane[0].band[level][orientation];

1480 IDWTELEM *buf= b->ibuf;

1481 const int w= b->width;

1482 const int h= b->height;

1483 const int stride= b->stride;

1484 const int qlog= av_clip(2*QROOT + b->qlog, 0, QROOT*16);

1485 const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);

1486 const int qdiv= (1<<16)/qmul;

1487 int x, y;

1488 //FIXME this is ugly

1489 for(y=0; y<h; y++)

1490 for(x=0; x<w; x++)

1491 buf[x+y*stride]= b->buf[x+y*stride];

1492 if(orientation==0)

1493 decorrelate(s, b, buf, stride, 1, 0);

1494 for(y=0; y<h; y++)

1495 for(x=0; x<w; x++)

1496 coef_sum+= abs(buf[x+y*stride]) * qdiv >> 16;

1497 }

1498 }

1499

1500 /* ugly, ratecontrol just takes a sqrt again */

1501 av_assert0(coef_sum < INT_MAX);

1502 coef_sum = (uint64_t)coef_sum * coef_sum >> 16;

1503

1504 if(pict->pict_type == AV_PICTURE_TYPE_I){

1505 s->m.current_picture.mb_var_sum= coef_sum;

1506 s->m.current_picture.mc_mb_var_sum= 0;

1507 }else{

1508 s->m.current_picture.mc_mb_var_sum= coef_sum;

1509 s->m.current_picture.mb_var_sum= 0;

1510 }

1511

1512 pict->quality= ff_rate_estimate_qscale(&s->m, 1);

1513 if (pict->quality < 0)

1514 return INT_MIN;

1515 s->lambda= pict->quality * 3/2;

1516 delta_qlog= qscale2qlog(pict->quality) - s->qlog;

1517 s->qlog+= delta_qlog;

1518 return delta_qlog;

1519 }

1520

1521 static void calculate_visual_weight(SnowContext *s, Plane *p){

1522 int width = p->width;

1523 int height= p->height;

1524 int level, orientation, x, y;

1525

1526 for(level=0; level<s->spatial_decomposition_count; level++){

1527 for(orientation=level ? 1 : 0; orientation<4; orientation++){

1528 SubBand *b= &p->band[level][orientation];

1529 IDWTELEM *ibuf= b->ibuf;

1530 int64_t error=0;

1531

1532 memset(s->spatial_idwt_buffer, 0, sizeof(*s->spatial_idwt_buffer)*width*height);

1533 ibuf[b->width/2 + b->height/2*b->stride]= 256*16;

1534 ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, width, height, width, s->spatial_decomposition_type, s->spatial_decomposition_count);

1535 for(y=0; y<height; y++){

1536 for(x=0; x<width; x++){

1537 int64_t d= s->spatial_idwt_buffer[x + y*width]*16;

1538 error += d*d;

1539 }

1540 }

1541

1542 b->qlog= (int)(log(352256.0/sqrt(error)) / log(pow(2.0, 1.0/QROOT))+0.5);

1543 }

1544 }

1545 }

1546

1547 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,

1548 const AVFrame *pict, int *got_packet)

1549 {

1550 SnowContext *s = avctx->priv_data;

1551 RangeCoder * const c= &s->c;

1552 AVFrame *pic = pict;

1553 const int width= s->avctx->width;

1554 const int height= s->avctx->height;

1555 int level, orientation, plane_index, i, y, ret;

1556 uint8_t rc_header_bak[sizeof(s->header_state)];

1557 uint8_t rc_block_bak[sizeof(s->block_state)];

1558

1559 if ((ret = ff_alloc_packet2(avctx, pkt, s->b_width*s->b_height*MB_SIZE*MB_SIZE*3 + FF_MIN_BUFFER_SIZE)) < 0)

1560 return ret;

1561

1562 ff_init_range_encoder(c, pkt->data, pkt->size);

1563 ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);

1564

1565 for(i=0; i < s->nb_planes; i++){

1566 int hshift= i ? s->chroma_h_shift : 0;

1567 int vshift= i ? s->chroma_v_shift : 0;

1568 for(y=0; y<(height>>vshift); y++)

1569 memcpy(&s->input_picture->data[i][y * s->input_picture->linesize[i]],

1570 &pict->data[i][y * pict->linesize[i]],

1571 width>>hshift);

1572 s->mpvencdsp.draw_edges(s->input_picture->data[i], s->input_picture->linesize[i],

1573 width >> hshift, height >> vshift,

1574 EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,

1575 EDGE_TOP | EDGE_BOTTOM);

1576

1577 }

1578 emms_c();

1579 s->new_picture = pict;

1580

1581 s->m.picture_number= avctx->frame_number;

1582 if(avctx->flags&CODEC_FLAG_PASS2){

1583 s->m.pict_type = pic->pict_type = s->m.rc_context.entry[avctx->frame_number].new_pict_type;

1584 s->keyframe = pic->pict_type == AV_PICTURE_TYPE_I;

1585 if(!(avctx->flags&CODEC_FLAG_QSCALE)) {

1586 pic->quality = ff_rate_estimate_qscale(&s->m, 0);

1587 if (pic->quality < 0)

1588 return -1;

1589 }

1590 }else{

1591 s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;

1592 s->m.pict_type = pic->pict_type = s->keyframe ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P;

1593 }

1594

1595 if(s->pass1_rc && avctx->frame_number == 0)

1596 pic->quality = 2*FF_QP2LAMBDA;

1597 if (pic->quality) {

1598 s->qlog = qscale2qlog(pic->quality);

1599 s->lambda = pic->quality * 3/2;

1600 }

1601 if (s->qlog < 0 || (!pic->quality && (avctx->flags & CODEC_FLAG_QSCALE))) {

1602 s->qlog= LOSSLESS_QLOG;

1603 s->lambda = 0;

1604 }//else keep previous frame's qlog until after motion estimation

1605

1606 if (s->current_picture->data[0] && !(s->avctx->flags&CODEC_FLAG_EMU_EDGE)) {

1607 int w = s->avctx->width;

1608 int h = s->avctx->height;

1609

1610 s->mpvencdsp.draw_edges(s->current_picture->data[0],

1611 s->current_picture->linesize[0], w , h ,

1612 EDGE_WIDTH , EDGE_WIDTH , EDGE_TOP | EDGE_BOTTOM);

1613 if (s->current_picture->data[2]) {

1614 s->mpvencdsp.draw_edges(s->current_picture->data[1],

1615 s->current_picture->linesize[1], w>>s->chroma_h_shift, h>>s->chroma_v_shift,

1616 EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);

1617 s->mpvencdsp.draw_edges(s->current_picture->data[2],

1618 s->current_picture->linesize[2], w>>s->chroma_h_shift, h>>s->chroma_v_shift,

1619 EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);

1620 }

1621 }

1622

1623 ff_snow_frame_start(s);

1624 av_frame_unref(avctx->coded_frame);

1625 av_frame_ref(avctx->coded_frame, s->current_picture);

1626

1627 s->m.current_picture_ptr= &s->m.current_picture;

1628 s->m.current_picture.f = s->current_picture;

1629 s->m.current_picture.f->pts = pict->pts;

1630 if(pic->pict_type == AV_PICTURE_TYPE_P){

1631 int block_width = (width +15)>>4;

1632 int block_height= (height+15)>>4;

1633 int stride= s->current_picture->linesize[0];

1634

1635 av_assert0(s->current_picture->data[0]);

1636 av_assert0(s->last_picture[0]->data[0]);

1637

1638 s->m.avctx= s->avctx;

1639 s->m. last_picture.f = s->last_picture[0];

1640 s->m. new_picture.f = s->input_picture;

1641 s->m. last_picture_ptr= &s->m. last_picture;

1642 s->m.linesize = stride;

1643 s->m.uvlinesize= s->current_picture->linesize[1];

1644 s->m.width = width;

1645 s->m.height= height;

1646 s->m.mb_width = block_width;

1647 s->m.mb_height= block_height;

1648 s->m.mb_stride= s->m.mb_width+1;

1649 s->m.b8_stride= 2*s->m.mb_width+1;

1650 s->m.f_code=1;

1651 s->m.pict_type = pic->pict_type;

1652 s->m.me_method= s->avctx->me_method;

1653 s->m.me.scene_change_score=0;

1654 s->m.flags= s->avctx->flags;

1655 s->m.quarter_sample= (s->avctx->flags & CODEC_FLAG_QPEL)!=0;

1656 s->m.out_format= FMT_H263;

1657 s->m.unrestricted_mv= 1;

1658

1659 s->m.lambda = s->lambda;

1660 s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);

1661 s->lambda2= s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;

1662

1663 s->m.mecc= s->mecc; //move

1664 s->m.qdsp= s->qdsp; //move

1665 s->m.hdsp = s->hdsp;

1666 ff_init_me(&s->m);

1667 s->hdsp = s->m.hdsp;

1668 s->mecc= s->m.mecc;

1669 }

1670

1671 if(s->pass1_rc){

1672 memcpy(rc_header_bak, s->header_state, sizeof(s->header_state));

1673 memcpy(rc_block_bak, s->block_state, sizeof(s->block_state));

1674 }

1675

1676 redo_frame:

1677

1678 s->spatial_decomposition_count= 5;

1679

1680 while( !(width >>(s->chroma_h_shift + s->spatial_decomposition_count))

1681 || !(height>>(s->chroma_v_shift + s->spatial_decomposition_count)))

1682 s->spatial_decomposition_count--;

1683

1684 if (s->spatial_decomposition_count <= 0) {

1685 av_log(avctx, AV_LOG_ERROR, "Resolution too low\n");

1686 return AVERROR(EINVAL);

1687 }

1688

1689 s->m.pict_type = pic->pict_type;

1690 s->qbias = pic->pict_type == AV_PICTURE_TYPE_P ? 2 : 0;

1691

1692 ff_snow_common_init_after_header(avctx);

1693

1694 if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){

1695 for(plane_index=0; plane_index < s->nb_planes; plane_index++){

1696 calculate_visual_weight(s, &s->plane[plane_index]);

1697 }

1698 }

1699

1700 encode_header(s);

1701 s->m.misc_bits = 8*(s->c.bytestream - s->c.bytestream_start);

1702 encode_blocks(s, 1);

1703 s->m.mv_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits;

1704

1705 for(plane_index=0; plane_index < s->nb_planes; plane_index++){

1706 Plane *p= &s->plane[plane_index];

1707 int w= p->width;

1708 int h= p->height;

1709 int x, y;

1710 // int bits= put_bits_count(&s->c.pb);

1711

1712 if (!s->memc_only) {

1713 //FIXME optimize

1714 if(pict->data[plane_index]) //FIXME gray hack

1715 for(y=0; y<h; y++){

1716 for(x=0; x<w; x++){

1717 s->spatial_idwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<FRAC_BITS;

1718 }

1719 }

1720 predict_plane(s, s->spatial_idwt_buffer, plane_index, 0);

1721

1722 if( plane_index==0

1723 && pic->pict_type == AV_PICTURE_TYPE_P

1724 && !(avctx->flags&CODEC_FLAG_PASS2)

1725 && s->m.me.scene_change_score > s->avctx->scenechange_threshold){

1726 ff_init_range_encoder(c, pkt->data, pkt->size);

1727 ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);

1728 pic->pict_type= AV_PICTURE_TYPE_I;

1729 s->keyframe=1;

1730 s->current_picture->key_frame=1;

1731 goto redo_frame;

1732 }

1733

1734 if(s->qlog == LOSSLESS_QLOG){

1735 for(y=0; y<h; y++){

1736 for(x=0; x<w; x++){

1737 s->spatial_dwt_buffer[y*w + x]= (s->spatial_idwt_buffer[y*w + x] + (1<<(FRAC_BITS-1))-1)>>FRAC_BITS;

1738 }

1739 }

1740 }else{

1741 for(y=0; y<h; y++){

1742 for(x=0; x<w; x++){

1743 s->spatial_dwt_buffer[y*w + x]=s->spatial_idwt_buffer[y*w + x]<<ENCODER_EXTRA_BITS;

1744 }

1745 }

1746 }

1747

1748 ff_spatial_dwt(s->spatial_dwt_buffer, s->temp_dwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);

1749

1750 if(s->pass1_rc && plane_index==0){

1751 int delta_qlog = ratecontrol_1pass(s, pic);

1752 if (delta_qlog <= INT_MIN)

1753 return -1;

1754 if(delta_qlog){

1755 //reordering qlog in the bitstream would eliminate this reset

1756 ff_init_range_encoder(c, pkt->data, pkt->size);

1757 memcpy(s->header_state, rc_header_bak, sizeof(s->header_state));

1758 memcpy(s->block_state, rc_block_bak, sizeof(s->block_state));

1759 encode_header(s);

1760 encode_blocks(s, 0);

1761 }

1762 }

1763

1764 for(level=0; level<s->spatial_decomposition_count; level++){

1765 for(orientation=level ? 1 : 0; orientation<4; orientation++){

1766 SubBand *b= &p->band[level][orientation];

1767

1768 quantize(s, b, b->ibuf, b->buf, b->stride, s->qbias);

1769 if(orientation==0)

1770 decorrelate(s, b, b->ibuf, b->stride, pic->pict_type == AV_PICTURE_TYPE_P, 0);

1771 if (!s->no_bitstream)

1772 encode_subband(s, b, b->ibuf, b->parent ? b->parent->ibuf : NULL, b->stride, orientation);

1773 av_assert0(b->parent==NULL || b->parent->stride == b->stride*2);

1774 if(orientation==0)

1775 correlate(s, b, b->ibuf, b->stride, 1, 0);

1776 }

1777 }

1778

1779 for(level=0; level<s->spatial_decomposition_count; level++){

1780 for(orientation=level ? 1 : 0; orientation<4; orientation++){

1781 SubBand *b= &p->band[level][orientation];

1782

1783 dequantize(s, b, b->ibuf, b->stride);

1784 }

1785 }

1786

1787 ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);

1788 if(s->qlog == LOSSLESS_QLOG){

1789 for(y=0; y<h; y++){

1790 for(x=0; x<w; x++){

1791 s->spatial_idwt_buffer[y*w + x]<<=FRAC_BITS;

1792 }

1793 }

1794 }

1795 predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);

1796 }else{

1797 //ME/MC only

1798 if(pic->pict_type == AV_PICTURE_TYPE_I){

1799 for(y=0; y<h; y++){

1800 for(x=0; x<w; x++){

1801 s->current_picture->data[plane_index][y*s->current_picture->linesize[plane_index] + x]=

1802 pict->data[plane_index][y*pict->linesize[plane_index] + x];

1803 }

1804 }

1805 }else{

1806 memset(s->spatial_idwt_buffer, 0, sizeof(IDWTELEM)*w*h);

1807 predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);

1808 }

1809 }

1810 if(s->avctx->flags&CODEC_FLAG_PSNR){

1811 int64_t error= 0;

1812

1813 if(pict->data[plane_index]) //FIXME gray hack

1814 for(y=0; y<h; y++){

1815 for(x=0; x<w; x++){

1816 int d= s->current_picture->data[plane_index][y*s->current_picture->linesize[plane_index] + x] - pict->data[plane_index][y*pict->linesize[plane_index] + x];

1817 error += d*d;

1818 }

1819 }

1820 s->avctx->error[plane_index] += error;

1821 s->current_picture->error[plane_index] = error;

1822 }

1823

1824 }

1825

1826 update_last_header_values(s);

1827

1828 ff_snow_release_buffer(avctx);