FFmpeg: libavcodec/snowenc.c Source File

FFmpeg

[フレーム]

libavcodec

snowenc.c

Go to the documentation of this file.

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 "dsputil.h"

26 #include "internal.h"

27 #include "snow_dwt.h"

28 #include "snow.h"

30 #include "rangecoder.h"

31 #include "mathops.h"

33 #include "mpegvideo.h"

34 #include "h263.h"

36 static av_cold int encode_init(AVCodecContext *avctx)

37 {

38 SnowContext *s = avctx->priv_data;

39 int plane_index, ret;

41 if(avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){

42 av_log(avctx, AV_LOG_ERROR, "This codec is under development, files encoded with it may not be decodable with future versions!!!\n"

43 "Use vstrict=-2 / -strict -2 to use it anyway.\n");

44 return -1;

45 }

47 if(avctx->prediction_method == DWT_97

48 && (avctx->flags & CODEC_FLAG_QSCALE)

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

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

51 return -1;

52 }

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

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

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

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

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

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

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

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

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

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

66 }

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

69 ff_snow_common_end(avctx->priv_data);

70 return ret;

71 }

72 ff_snow_alloc_blocks(s);

74 s->version=0;

76 s->m.avctx = avctx;

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

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

80 s->m.me.temp =

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

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

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

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

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

86 return AVERROR(ENOMEM);

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

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

92 if(avctx->flags&CODEC_FLAG_PASS1){

93 if(!avctx->stats_out)

94 avctx->stats_out = av_mallocz(256);

96 if (!avctx->stats_out)

97 return AVERROR(ENOMEM);

98 }

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

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

101 return -1;

102 }

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

104

105 switch(avctx->pix_fmt){

106 case AV_PIX_FMT_YUV444P:

107 // case AV_PIX_FMT_YUV422P:

108 case AV_PIX_FMT_YUV420P:

109 // case AV_PIX_FMT_YUV411P:

110 case AV_PIX_FMT_YUV410P:

111 s->nb_planes = 3;

112 s->colorspace_type= 0;

113 break;

114 case AV_PIX_FMT_GRAY8:

115 s->nb_planes = 1;

116 s->colorspace_type = 1;

117 break;

118 /* case AV_PIX_FMT_RGB32:

119 s->colorspace= 1;

120 break;*/

121 default:

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

123 return -1;

124 }

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

126

127 ff_set_cmp(&s->dsp, s->dsp.me_cmp, s->avctx->me_cmp);

128 ff_set_cmp(&s->dsp, s->dsp.me_sub_cmp, s->avctx->me_sub_cmp);

129

130 s->input_picture = av_frame_alloc();

131 if (!s->input_picture)

132 return AVERROR(ENOMEM);

133 if ((ret = ff_get_buffer(s->avctx, s->input_picture, AV_GET_BUFFER_FLAG_REF)) < 0)

134 return ret;

135

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

137 int i;

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

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

140 s->ref_mvs[i]= av_mallocz(size*sizeof(int16_t[2]));

141 s->ref_scores[i]= av_mallocz(size*sizeof(uint32_t));

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

143 return AVERROR(ENOMEM);

144 }

145 }

146

147 return 0;

148 }

149

150 //near copy & paste from dsputil, FIXME

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

152 {

153 int s, i, j;

154

155 s = 0;

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

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

158 s += pix[0];

159 pix ++;

160 }

161 pix += line_size - w;

162 }

163 return s;

164 }

165

166 //near copy & paste from dsputil, FIXME

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

168 {

169 int s, i, j;

170 uint32_t *sq = ff_squareTbl + 256;

171

172 s = 0;

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

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

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

176 pix ++;

177 }

178 pix += line_size - w;

179 }

180 return s;

181 }

182

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

184 switch(type&0xFF){

185 default:

186 case FF_CMP_SAD:

187 return lambda>>FF_LAMBDA_SHIFT;

188 case FF_CMP_DCT:

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

190 case FF_CMP_W53:

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

192 case FF_CMP_W97:

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

194 case FF_CMP_SATD:

195 case FF_CMP_DCT264:

196 return (2*lambda)>>FF_LAMBDA_SHIFT;

197 case FF_CMP_RD:

198 case FF_CMP_PSNR:

199 case FF_CMP_SSE:

200 case FF_CMP_NSSE:

201 return lambda2>>FF_LAMBDA_SHIFT;

202 case FF_CMP_BIT:

203 return 1;

204 }

205 }

206

207 //FIXME copy&paste

208 #define P_LEFT P[1]

209 #define P_TOP P[2]

210 #define P_TOPRIGHT P[3]

211 #define P_MEDIAN P[4]

212 #define P_MV1 P[9]

213 #define FLAG_QPEL 1 //must be 1

214

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

216 uint8_t p_buffer[1024];

217 uint8_t i_buffer[1024];

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

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

220 RangeCoder pc, ic;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

240 int pmx, pmy;

241 int mx=0, my=0;

242 int l,cr,cb;

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

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

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

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

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

248 int P[10][2];

249 int16_t last_mv[3][2];

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

251 const int shift= 1+qpel;

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

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

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

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

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

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

258

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

260 if(s->keyframe){

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

262 return 0;

263 }

264

265 // clip predictors / edge ?

266

267 P_LEFT[0]= left->mx;

268 P_LEFT[1]= left->my;

269 P_TOP [0]= top->mx;

270 P_TOP [1]= top->my;

271 P_TOPRIGHT[0]= tr->mx;

272 P_TOPRIGHT[1]= tr->my;

273

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

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

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

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

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

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

280

281 s->m.mb_stride=2;

282 s->m.mb_x=

283 s->m.mb_y= 0;

284 c->skip= 0;

285

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

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

288

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

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

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

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

293

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

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

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

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

298

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

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

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

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

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

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

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

306

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

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

309

310 if (!y) {

311 c->pred_x= P_LEFT[0];

312 c->pred_y= P_LEFT[1];

313 } else {

314 c->pred_x = P_MEDIAN[0];

315 c->pred_y = P_MEDIAN[1];

316 }

317

318 score= INT_MAX;

319 best_ref= 0;

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

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

322

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

324 (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w);

325

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

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

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

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

330

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

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

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

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

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

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

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

338 }

339 if(score > ref_score){

340 score= ref_score;

341 best_ref= ref;

342 mx= ref_mx;

343 my= ref_my;

344 }

345 }

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

347

348 // subpel search

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

350 pc= s->c;

351 pc.bytestream_start=

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

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

354

355 if(level!=s->block_max_depth)

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

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

358 if(s->ref_frames > 1)

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

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

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

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

363 p_len= pc.bytestream - pc.bytestream_start;

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

365

366 block_s= block_w*block_w;

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

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

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

370

371 if (s->nb_planes > 2) {

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

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

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

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

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

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

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

379 }else

380 cb = cr = 0;

381

382 ic= s->c;

383 ic.bytestream_start=

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

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

386 if(level!=s->block_max_depth)

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

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

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

390 if (s->nb_planes > 2) {

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

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

393 }

394 i_len= ic.bytestream - ic.bytestream_start;

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

396

397 // assert(score==256*256*256*64-1);

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

399 av_assert1(iscore >= 0);

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

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

402

403 if(level==0){

404 int varc= iscore >> 8;

405 int vard= score >> 8;

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

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

408 else

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

410 }

411

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

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

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

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

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

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

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

419

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

421 return score2;

422 }

423

424 if(iscore < score){

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

426 memcpy(pbbak, i_buffer, i_len);

427 s->c= ic;

428 s->c.bytestream_start= pbbak_start;

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

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

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

432 return iscore;

433 }else{

434 memcpy(pbbak, p_buffer, p_len);

435 s->c= pc;

436 s->c.bytestream_start= pbbak_start;

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

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

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

440 return score;

441 }

442 }

443

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

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

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

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

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

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

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

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

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

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

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

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

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

457 int pmx, pmy;

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

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

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

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

462

463 if(s->keyframe){

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

465 return;

466 }

467

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

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

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

471 }else{

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

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

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

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

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

477 return;

478 }

479 }

480 if(b->type & BLOCK_INTRA){

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

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

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

484 if (s->nb_planes > 2) {

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

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

487 }

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

489 }else{

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

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

492 if(s->ref_frames > 1)

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

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

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

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

497 }

498 }

499

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

501 int i, x2, y2;

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

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

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

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

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

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

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

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

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

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

512 const int w= p->width;

513 const int h= p->height;

514 int index= mb_x + mb_y*b_stride;

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

516 BlockNode backup= *b;

517 int ab=0;

518 int aa=0;

519

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

521

522 b->type|= BLOCK_INTRA;

523 b->color[plane_index]= 0;

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

525

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

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

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

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

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

531

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

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

534

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

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

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

538 int obmc_v= obmc[index];

539 int d;

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

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

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

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

544 //FIXME precalculate this or simplify it somehow else

545

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

547 dst[index] = d;

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

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

550 }

551 }

552 }

553 *b= backup;

554

555 return av_clip( ROUNDED_DIV(ab<<LOG2_OBMC_MAX, aa), 0, 255); //FIXME we should not need clipping

556 }

557

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

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

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

561 int index= x + y*b_stride;

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

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

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

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

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

567 int dmx, dmy;

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

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

570

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

572 return 0;

573 /*

574 1 0 0

575 01X 1-2 1

576 001XX 3-6 2-3

577 0001XXX 7-14 4-7

578 00001XXXX 15-30 8-15

579 */

580 //FIXME try accurate rate

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

582 if(b->type & BLOCK_INTRA){

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

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

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

586 }else{

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

588 dmx-= b->mx;

589 dmy-= b->my;

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

591 + av_log2(2*FFABS(dmy))

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

593 }

594 }

595

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

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

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

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

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

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

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

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

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

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

606 uint8_t *cur = s->scratchbuf;

607 uint8_t *tmp = s->emu_edge_buffer;

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

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

610 const int w= p->width;

611 const int h= p->height;

612 int distortion;

613 int rate= 0;

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

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

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

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

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

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

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

621 int i,x,y;

622

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

624

625 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);

626

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

628 const uint8_t *obmc1= obmc_edged[y];

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

630 uint8_t *cur1 = cur + y*ref_stride;

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

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

633 #if FRAC_BITS >= LOG2_OBMC_MAX

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

635 #else

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

637 #endif

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

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

640 dst1[x] = v;

641 }

642 }

643

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

645 if(LOG2_OBMC_MAX == 8

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

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

648 if(mb_x == 0)

649 x1 = block_w;

650 else

651 x0 = block_w;

652 if(mb_y == 0)

653 y1 = block_h;

654 else

655 y0 = block_h;

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

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

658 }

659

660 if(block_w==16){

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

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

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

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

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

666 * estimation does not always converge. */

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

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

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

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

671 else{

672 distortion = 0;

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

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

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

676 }

677 }

678 }else{

679 av_assert2(block_w==8);

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

681 }

682

683 if(plane_index==0){

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

685 /* ..RRr

686 * .RXx.

687 * rxx..

688 */

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

690 }

691 if(mb_x == b_stride-2)

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

693 }

694 return distortion + rate*penalty_factor;

695 }

696

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

698 int i, y2;

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

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

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

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

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

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

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

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

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

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

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

710 static IDWTELEM zero_dst[4096]; //FIXME

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

712 const int w= p->width;

713 const int h= p->height;

714 int distortion= 0;

715 int rate= 0;

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

717

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

719

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

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

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

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

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

725

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

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

728

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

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

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

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

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

734 if(x<0){

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

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

737 }

738 if(x+block_w > w){

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

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

741 }

742

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

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

745 }

746

747 if(plane_index==0){

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

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

750

751 /* ..RRRr

752 * .RXXx.

753 * .RXXx.

754 * rxxx.

755 */

756 if(merged)

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

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

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

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

761 }

762 }

763 return distortion + rate*penalty_factor;

764 }

765

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

767 const int w= b->width;

768 const int h= b->height;

769 int x, y;

770

771 if(1){

772 int run=0;

773 int *runs = s->run_buffer;

774 int run_index=0;

775 int max_index;

776

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

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

779 int v, p=0;

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

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

782

783 if(y){

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

785 if(x){

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

787 }

788 if(x + 1 < w){

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

790 }

791 }

792 if(x){

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

794 /*if(x > 1){

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

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

797 }*/

798 }

799 if(parent){

800 int px= x>>1;

801 int py= y>>1;

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

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

804 }

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

806 if(v){

807 runs[run_index++]= run;

808 run=0;

809 }else{

810 run++;

811 }

812 }

813 }

814 }

815 max_index= run_index;

816 runs[run_index++]= run;

817 run_index=0;

818 run= runs[run_index++];

819

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

821 if(run_index <= max_index)

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

823

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

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

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

827 return -1;

828 }

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

830 int v, p=0;

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

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

833

834 if(y){

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

836 if(x){

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

838 }

839 if(x + 1 < w){

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

841 }

842 }

843 if(x){

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

845 /*if(x > 1){

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

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

848 }*/

849 }

850 if(parent){

851 int px= x>>1;

852 int py= y>>1;

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

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

855 }

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

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

858

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

860 }else{

861 if(!run){

862 run= runs[run_index++];

863

864 if(run_index <= max_index)

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

866 av_assert2(v);

867 }else{

868 run--;

869 av_assert2(!v);

870 }

871 }

872 if(v){

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

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

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

876

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

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

879 }

880 }

881 }

882 }

883 return 0;

884 }

885

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

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

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

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

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

891 }

892

893 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){

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

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

896 BlockNode backup= *block;

897 unsigned value;

898 int rd, index;

899

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

901 av_assert2(mb_x<b_stride);

902

903 if(intra){

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

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

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

907 block->type |= BLOCK_INTRA;

908 }else{

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

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

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

912 return 0;

913 s->me_cache[index]= value;

914

915 block->mx= p[0];

916 block->my= p[1];

917 block->type &= ~BLOCK_INTRA;

918 }

919

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

921

922 //FIXME chroma

923 if(rd < *best_rd){

924 *best_rd= rd;

925 return 1;

926 }else{

927 *block= backup;

928 return 0;

929 }

930 }

931

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

933 * fixes compilation problem with gcc 2.95 */

934 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){

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

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

937 }

938

939 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){

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

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

942 BlockNode backup[4];

943 unsigned value;

944 int rd, index;

945

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

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

948 * 'int16_t'". */

949 backup[0] = block[0];

950 backup[1] = block[1];

951 backup[2] = block[b_stride];

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

953

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

955 av_assert2(mb_x<b_stride);

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

957

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

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

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

961 return 0;

962 s->me_cache[index]= value;

963

964 block->mx= p0;

965 block->my= p1;

966 block->ref= ref;

967 block->type &= ~BLOCK_INTRA;

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

969

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

971

972 //FIXME chroma

973 if(rd < *best_rd){

974 *best_rd= rd;

975 return 1;

976 }else{

977 block[0]= backup[0];

978 block[1]= backup[1];

979 block[b_stride]= backup[2];

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

981 return 0;

982 }

983 }

984

985 static void iterative_me(SnowContext *s){

986 int pass, mb_x, mb_y;

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

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

989 const int b_stride= b_width;

990 int color[3];

991

992 {

993 RangeCoder r = s->c;

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

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

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

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

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

999 s->c = r;

1000 memcpy(s->block_state, state, sizeof(s->block_state));

1001 }

1002

1003 for(pass=0; pass<25; pass++){

1004 int change= 0;

1005

1006 for(mb_y= 0; mb_y<b_height; mb_y++){

1007 for(mb_x= 0; mb_x<b_width; mb_x++){

1008 int dia_change, i, j, ref;

1009 int best_rd= INT_MAX, ref_rd;

1010 BlockNode backup, ref_b;

1011 const int index= mb_x + mb_y * b_stride;

1012 BlockNode *block= &s->block[index];

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

1014 BlockNode *lb = mb_x ? &s->block[index -1] : NULL;

1015 BlockNode *rb = mb_x+1<b_width ? &s->block[index +1] : NULL;

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

1017 BlockNode *tlb= mb_x && mb_y ? &s->block[index-b_stride-1] : NULL;

1018 BlockNode *trb= mb_x+1<b_width && mb_y ? &s->block[index-b_stride+1] : NULL;

1019 BlockNode *blb= mb_x && mb_y+1<b_height ? &s->block[index+b_stride-1] : NULL;

1020 BlockNode *brb= mb_x+1<b_width && mb_y+1<b_height ? &s->block[index+b_stride+1] : NULL;

1021 const int b_w= (MB_SIZE >> s->block_max_depth);

1022 uint8_t obmc_edged[MB_SIZE * 2][MB_SIZE * 2];

1023

1024 if(pass && (block->type & BLOCK_OPT))

1025 continue;

1026 block->type |= BLOCK_OPT;

1027

1028 backup= *block;

1029

1030 if(!s->me_cache_generation)

1031 memset(s->me_cache, 0, sizeof(s->me_cache));

1032 s->me_cache_generation += 1<<22;

1033

1034 //FIXME precalculate

1035 {

1036 int x, y;

1037 for (y = 0; y < b_w * 2; y++)

1038 memcpy(obmc_edged[y], ff_obmc_tab[s->block_max_depth] + y * b_w * 2, b_w * 2);

1039 if(mb_x==0)

1040 for(y=0; y<b_w*2; y++)

1041 memset(obmc_edged[y], obmc_edged[y][0] + obmc_edged[y][b_w-1], b_w);

1042 if(mb_x==b_stride-1)

1043 for(y=0; y<b_w*2; y++)

1044 memset(obmc_edged[y]+b_w, obmc_edged[y][b_w] + obmc_edged[y][b_w*2-1], b_w);

1045 if(mb_y==0){

1046 for(x=0; x<b_w*2; x++)

1047 obmc_edged[0][x] += obmc_edged[b_w-1][x];

1048 for(y=1; y<b_w; y++)

1049 memcpy(obmc_edged[y], obmc_edged[0], b_w*2);

1050 }

1051 if(mb_y==b_height-1){

1052 for(x=0; x<b_w*2; x++)

1053 obmc_edged[b_w*2-1][x] += obmc_edged[b_w][x];

1054 for(y=b_w; y<b_w*2-1; y++)

1055 memcpy(obmc_edged[y], obmc_edged[b_w*2-1], b_w*2);

1056 }

1057 }

1058

1059 //skip stuff outside the picture

1060 if(mb_x==0 || mb_y==0 || mb_x==b_width-1 || mb_y==b_height-1){

1061 uint8_t *src= s-> input_picture->data[0];

1062 uint8_t *dst= s->current_picture->data[0];

1063 const int stride= s->current_picture->linesize[0];

1064 const int block_w= MB_SIZE >> s->block_max_depth;

1065 const int block_h= MB_SIZE >> s->block_max_depth;

1066 const int sx= block_w*mb_x - block_w/2;

1067 const int sy= block_h*mb_y - block_h/2;

1068 const int w= s->plane[0].width;

1069 const int h= s->plane[0].height;

1070 int y;

1071

1072 for(y=sy; y<0; y++)

1073 memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);

1074 for(y=h; y<sy+block_h*2; y++)

1075 memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);

1076 if(sx<0){

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

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

1079 }

1080 if(sx+block_w*2 > w){

1081 for(y=sy; y<sy+block_h*2; y++)

1082 memcpy(dst + w + y*stride, src + w + y*stride, sx+block_w*2 - w);

1083 }

1084 }

1085

1086 // intra(black) = neighbors' contribution to the current block

1087 for(i=0; i < s->nb_planes; i++)

1088 color[i]= get_dc(s, mb_x, mb_y, i);

1089

1090 // get previous score (cannot be cached due to OBMC)

1091 if(pass > 0 && (block->type&BLOCK_INTRA)){

1092 int color0[3]= {block->color[0], block->color[1], block->color[2]};

1093 check_block(s, mb_x, mb_y, color0, 1, obmc_edged, &best_rd);

1094 }else

1095 check_block_inter(s, mb_x, mb_y, block->mx, block->my, obmc_edged, &best_rd);

1096

1097 ref_b= *block;

1098 ref_rd= best_rd;

1099 for(ref=0; ref < s->ref_frames; ref++){

1100 int16_t (*mvr)[2]= &s->ref_mvs[ref][index];

1101 if(s->ref_scores[ref][index] > s->ref_scores[ref_b.ref][index]*3/2) //FIXME tune threshold

1102 continue;

1103 block->ref= ref;

1104 best_rd= INT_MAX;

1105

1106 check_block_inter(s, mb_x, mb_y, mvr[0][0], mvr[0][1], obmc_edged, &best_rd);

1107 check_block_inter(s, mb_x, mb_y, 0, 0, obmc_edged, &best_rd);

1108 if(tb)

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

1110 if(lb)

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

1112 if(rb)

1113 check_block_inter(s, mb_x, mb_y, mvr[1][0], mvr[1][1], obmc_edged, &best_rd);

1114 if(bb)

1115 check_block_inter(s, mb_x, mb_y, mvr[b_stride][0], mvr[b_stride][1], obmc_edged, &best_rd);

1116

1117 /* fullpel ME */

1118 //FIXME avoid subpel interpolation / round to nearest integer

1119 do{

1120 dia_change=0;

1121 for(i=0; i<FFMAX(s->avctx->dia_size, 1); i++){

1122 for(j=0; j<i; j++){

1123 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+4*(i-j), block->my+(4*j), obmc_edged, &best_rd);

1124 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx-4*(i-j), block->my-(4*j), obmc_edged, &best_rd);

1125 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+4*(i-j), block->my-(4*j), obmc_edged, &best_rd);

1126 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx-4*(i-j), block->my+(4*j), obmc_edged, &best_rd);

1127 }

1128 }

1129 }while(dia_change);

1130 /* subpel ME */

1131 do{

1132 static const int square[8][2]= {{+1, 0},{-1, 0},{ 0,+1},{ 0,-1},{+1,+1},{-1,-1},{+1,-1},{-1,+1},};

1133 dia_change=0;

1134 for(i=0; i<8; i++)

1135 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+square[i][0], block->my+square[i][1], obmc_edged, &best_rd);

1136 }while(dia_change);

1137 //FIXME or try the standard 2 pass qpel or similar

1138

1139 mvr[0][0]= block->mx;

1140 mvr[0][1]= block->my;

1141 if(ref_rd > best_rd){

1142 ref_rd= best_rd;

1143 ref_b= *block;

1144 }

1145 }

1146 best_rd= ref_rd;

1147 *block= ref_b;

1148 check_block(s, mb_x, mb_y, color, 1, obmc_edged, &best_rd);

1149 //FIXME RD style color selection

1150 if(!same_block(block, &backup)){

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

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

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

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

1155 if(tlb) tlb->type &= ~BLOCK_OPT;

1156 if(trb) trb->type &= ~BLOCK_OPT;

1157 if(blb) blb->type &= ~BLOCK_OPT;

1158 if(brb) brb->type &= ~BLOCK_OPT;

1159 change ++;

1160 }

1161 }

1162 }

1163 av_log(s->avctx, AV_LOG_ERROR, "pass:%d changed:%d\n", pass, change);

1164 if(!change)

1165 break;

1166 }

1167

1168 if(s->block_max_depth == 1){

1169 int change= 0;

1170 for(mb_y= 0; mb_y<b_height; mb_y+=2){

1171 for(mb_x= 0; mb_x<b_width; mb_x+=2){

1172 int i;

1173 int best_rd, init_rd;

1174 const int index= mb_x + mb_y * b_stride;

1175 BlockNode *b[4];

1176

1177 b[0]= &s->block[index];

1178 b[1]= b[0]+1;

1179 b[2]= b[0]+b_stride;

1180 b[3]= b[2]+1;

1181 if(same_block(b[0], b[1]) &&

1182 same_block(b[0], b[2]) &&

1183 same_block(b[0], b[3]))

1184 continue;

1185

1186 if(!s->me_cache_generation)

1187 memset(s->me_cache, 0, sizeof(s->me_cache));

1188 s->me_cache_generation += 1<<22;

1189

1190 init_rd= best_rd= get_4block_rd(s, mb_x, mb_y, 0);

1191

1192 //FIXME more multiref search?

1193 check_4block_inter(s, mb_x, mb_y,

1194 (b[0]->mx + b[1]->mx + b[2]->mx + b[3]->mx + 2) >> 2,

1195 (b[0]->my + b[1]->my + b[2]->my + b[3]->my + 2) >> 2, 0, &best_rd);

1196

1197 for(i=0; i<4; i++)

1198 if(!(b[i]->type&BLOCK_INTRA))

1199 check_4block_inter(s, mb_x, mb_y, b[i]->mx, b[i]->my, b[i]->ref, &best_rd);

1200

1201 if(init_rd != best_rd)

1202 change++;

1203 }

1204 }

1205 av_log(s->avctx, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4);

1206 }

1207 }

1208

1209 static void encode_blocks(SnowContext *s, int search){

1210 int x, y;

1211 int w= s->b_width;

1212 int h= s->b_height;

1213

1214 if(s->avctx->me_method == ME_ITER && !s->keyframe && search)

1215 iterative_me(s);

1216

1217 for(y=0; y<h; y++){

1218 if(s->c.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit

1219 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");

1220 return;

1221 }

1222 for(x=0; x<w; x++){

1223 if(s->avctx->me_method == ME_ITER || !search)

1224 encode_q_branch2(s, 0, x, y);

1225 else

1226 encode_q_branch (s, 0, x, y);

1227 }

1228 }

1229 }

1230

1231 static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias){

1232 const int w= b->width;

1233 const int h= b->height;

1234 const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);

1235 const int qmul= ff_qexp[qlog&(QROOT-1)]<<((qlog>>QSHIFT) + ENCODER_EXTRA_BITS);

1236 int x,y, thres1, thres2;

1237

1238 if(s->qlog == LOSSLESS_QLOG){

1239 for(y=0; y<h; y++)

1240 for(x=0; x<w; x++)

1241 dst[x + y*stride]= src[x + y*stride];

1242 return;

1243 }

1244

1245 bias= bias ? 0 : (3*qmul)>>3;

1246 thres1= ((qmul - bias)>>QEXPSHIFT) - 1;

1247 thres2= 2*thres1;

1248

1249 if(!bias){

1250 for(y=0; y<h; y++){

1251 for(x=0; x<w; x++){

1252 int i= src[x + y*stride];

1253

1254 if((unsigned)(i+thres1) > thres2){

1255 if(i>=0){

1256 i<<= QEXPSHIFT;

1257 i/= qmul; //FIXME optimize

1258 dst[x + y*stride]= i;

1259 }else{

1260 i= -i;

1261 i<<= QEXPSHIFT;

1262 i/= qmul; //FIXME optimize

1263 dst[x + y*stride]= -i;

1264 }

1265 }else

1266 dst[x + y*stride]= 0;

1267 }

1268 }

1269 }else{

1270 for(y=0; y<h; y++){

1271 for(x=0; x<w; x++){

1272 int i= src[x + y*stride];

1273

1274 if((unsigned)(i+thres1) > thres2){

1275 if(i>=0){

1276 i<<= QEXPSHIFT;

1277 i= (i + bias) / qmul; //FIXME optimize

1278 dst[x + y*stride]= i;

1279 }else{

1280 i= -i;

1281 i<<= QEXPSHIFT;

1282 i= (i + bias) / qmul; //FIXME optimize

1283 dst[x + y*stride]= -i;

1284 }

1285 }else

1286 dst[x + y*stride]= 0;

1287 }

1288 }

1289 }

1290 }

1291

1292 static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride){

1293 const int w= b->width;

1294 const int h= b->height;

1295 const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);

1296 const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);

1297 const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;

1298 int x,y;

1299

1300 if(s->qlog == LOSSLESS_QLOG) return;

1301

1302 for(y=0; y<h; y++){

1303 for(x=0; x<w; x++){

1304 int i= src[x + y*stride];

1305 if(i<0){

1306 src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias

1307 }else if(i>0){

1308 src[x + y*stride]= (( i*qmul + qadd)>>(QEXPSHIFT));

1309 }

1310 }

1311 }

1312 }

1313

1314 static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){

1315 const int w= b->width;

1316 const int h= b->height;

1317 int x,y;

1318

1319 for(y=h-1; y>=0; y--){

1320 for(x=w-1; x>=0; x--){

1321 int i= x + y*stride;

1322

1323 if(x){

1324 if(use_median){

1325 if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);

1326 else src[i] -= src[i - 1];

1327 }else{

1328 if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);

1329 else src[i] -= src[i - 1];

1330 }

1331 }else{

1332 if(y) src[i] -= src[i - stride];

1333 }

1334 }

1335 }

1336 }

1337

1338 static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){

1339 const int w= b->width;

1340 const int h= b->height;

1341 int x,y;

1342

1343 for(y=0; y<h; y++){

1344 for(x=0; x<w; x++){

1345 int i= x + y*stride;

1346

1347 if(x){

1348 if(use_median){

1349 if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);

1350 else src[i] += src[i - 1];

1351 }else{

1352 if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);

1353 else src[i] += src[i - 1];

1354 }

1355 }else{

1356 if(y) src[i] += src[i - stride];

1357 }

1358 }

1359 }

1360 }

1361

1362 static void encode_qlogs(SnowContext *s){

1363 int plane_index, level, orientation;

1364

1365 for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){

1366 for(level=0; level<s->spatial_decomposition_count; level++){

1367 for(orientation=level ? 1:0; orientation<4; orientation++){

1368 if(orientation==2) continue;

1369 put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1);

1370 }

1371 }

1372 }

1373 }

1374

1375 static void encode_header(SnowContext *s){

1376 int plane_index, i;

1377 uint8_t kstate[32];

1378

1379 memset(kstate, MID_STATE, sizeof(kstate));

1380

1381 put_rac(&s->c, kstate, s->keyframe);

1382 if(s->keyframe || s->always_reset){

1383 ff_snow_reset_contexts(s);

1384 s->last_spatial_decomposition_type=

1385 s->last_qlog=

1386 s->last_qbias=

1387 s->last_mv_scale=

1388 s->last_block_max_depth= 0;

1389 for(plane_index=0; plane_index<2; plane_index++){

1390 Plane *p= &s->plane[plane_index];

1391 p->last_htaps=0;

1392 p->last_diag_mc=0;

1393 memset(p->last_hcoeff, 0, sizeof(p->last_hcoeff));

1394 }

1395 }

1396 if(s->keyframe){

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

1398 put_rac(&s->c, s->header_state, s->always_reset);

1399 put_symbol(&s->c, s->header_state, s->temporal_decomposition_type, 0);

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

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

1402 put_symbol(&s->c, s->header_state, s->colorspace_type, 0);

1403 if (s->nb_planes > 2) {

1404 put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0);

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

1406 }

1407 put_rac(&s->c, s->header_state, s->spatial_scalability);

1408 // put_rac(&s->c, s->header_state, s->rate_scalability);

1409 put_symbol(&s->c, s->header_state, s->max_ref_frames-1, 0);

1410

1411 encode_qlogs(s);

1412 }

1413

1414 if(!s->keyframe){

1415 int update_mc=0;

1416 for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){

1417 Plane *p= &s->plane[plane_index];

1418 update_mc |= p->last_htaps != p->htaps;

1419 update_mc |= p->last_diag_mc != p->diag_mc;

1420 update_mc |= !!memcmp(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));

1421 }

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

1423 if(update_mc){

1424 for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){

1425 Plane *p= &s->plane[plane_index];

1426 put_rac(&s->c, s->header_state, p->diag_mc);

1427 put_symbol(&s->c, s->header_state, p->htaps/2-1, 0);

1428 for(i= p->htaps/2; i; i--)

1429 put_symbol(&s->c, s->header_state, FFABS(p->hcoeff[i]), 0);

1430 }

1431 }

1432 if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){

1433 put_rac(&s->c, s->header_state, 1);

1434 put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);

1435 encode_qlogs(s);

1436 }else

1437 put_rac(&s->c, s->header_state, 0);

1438 }

1439

1440 put_symbol(&s->c, s->header_state, s->spatial_decomposition_type - s->last_spatial_decomposition_type, 1);

1441 put_symbol(&s->c, s->header_state, s->qlog - s->last_qlog , 1);

1442 put_symbol(&s->c, s->header_state, s->mv_scale - s->last_mv_scale, 1);

1443 put_symbol(&s->c, s->header_state, s->qbias - s->last_qbias , 1);

1444 put_symbol(&s->c, s->header_state, s->block_max_depth - s->last_block_max_depth, 1);

1445

1446 }

1447

1448 static void update_last_header_values(SnowContext *s){

1449 int plane_index;

1450

1451 if(!s->keyframe){

1452 for(plane_index=0; plane_index<2; plane_index++){

1453 Plane *p= &s->plane[plane_index];

1454 p->last_diag_mc= p->diag_mc;

1455 p->last_htaps = p->htaps;

1456 memcpy(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));

1457 }

1458 }

1459

1460 s->last_spatial_decomposition_type = s->spatial_decomposition_type;

1461 s->last_qlog = s->qlog;

1462 s->last_qbias = s->qbias;

1463 s->last_mv_scale = s->mv_scale;

1464 s->last_block_max_depth = s->block_max_depth;

1465 s->last_spatial_decomposition_count = s->spatial_decomposition_count;

1466 }

1467

1468 static int qscale2qlog(int qscale){

1469 return rint(QROOT*log2(qscale / (float)FF_QP2LAMBDA))

1470 + 61*QROOT/8; ///< 64 > 60

1471 }

1472

1473 static int ratecontrol_1pass(SnowContext *s, AVFrame *pict)

1474 {

1475 /* Estimate the frame's complexity as a sum of weighted dwt coefficients.

1476 * FIXME we know exact mv bits at this point,

1477 * but ratecontrol isn't set up to include them. */

1478 uint32_t coef_sum= 0;

1479 int level, orientation, delta_qlog;

1480

1481 for(level=0; level<s->spatial_decomposition_count; level++){

1482 for(orientation=level ? 1 : 0; orientation<4; orientation++){

1483 SubBand *b= &s->plane[0].band[level][orientation];

1484 IDWTELEM *buf= b->ibuf;

1485 const int w= b->width;

1486 const int h= b->height;

1487 const int stride= b->stride;

1488 const int qlog= av_clip(2*QROOT + b->qlog, 0, QROOT*16);

1489 const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);

1490 const int qdiv= (1<<16)/qmul;

1491 int x, y;

1492 //FIXME this is ugly

1493 for(y=0; y<h; y++)

1494 for(x=0; x<w; x++)

1495 buf[x+y*stride]= b->buf[x+y*stride];

1496 if(orientation==0)

1497 decorrelate(s, b, buf, stride, 1, 0);

1498 for(y=0; y<h; y++)

1499 for(x=0; x<w; x++)

1500 coef_sum+= abs(buf[x+y*stride]) * qdiv >> 16;

1501 }

1502 }

1503

1504 /* ugly, ratecontrol just takes a sqrt again */

1505 coef_sum = (uint64_t)coef_sum * coef_sum >> 16;

1506 av_assert0(coef_sum < INT_MAX);

1507

1508 if(pict->pict_type == AV_PICTURE_TYPE_I){

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

1510 s->m.current_picture.mc_mb_var_sum= 0;

1511 }else{

1512 s->m.current_picture.mc_mb_var_sum= coef_sum;

1513 s->m.current_picture.mb_var_sum= 0;

1514 }

1515

1516 pict->quality= ff_rate_estimate_qscale(&s->m, 1);

1517 if (pict->quality < 0)

1518 return INT_MIN;

1519 s->lambda= pict->quality * 3/2;

1520 delta_qlog= qscale2qlog(pict->quality) - s->qlog;

1521 s->qlog+= delta_qlog;

1522 return delta_qlog;

1523 }

1524

1525 static void calculate_visual_weight(SnowContext *s, Plane *p){

1526 int width = p->width;

1527 int height= p->height;

1528 int level, orientation, x, y;

1529

1530 for(level=0; level<s->spatial_decomposition_count; level++){

1531 for(orientation=level ? 1 : 0; orientation<4; orientation++){

1532 SubBand *b= &p->band[level][orientation];

1533 IDWTELEM *ibuf= b->ibuf;

1534 int64_t error=0;

1535

1536 memset(s->spatial_idwt_buffer, 0, sizeof(*s->spatial_idwt_buffer)*width*height);

1537 ibuf[b->width/2 + b->height/2*b->stride]= 256*16;

1538 ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, width, height, width, s->spatial_decomposition_type, s->spatial_decomposition_count);

1539 for(y=0; y<height; y++){

1540 for(x=0; x<width; x++){

1541 int64_t d= s->spatial_idwt_buffer[x + y*width]*16;

1542 error += d*d;

1543 }

1544 }

1545

1546 b->qlog= (int)(log(352256.0/sqrt(error)) / log(pow(2.0, 1.0/QROOT))+0.5);

1547 }

1548 }

1549 }

1550

1551 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,

1552 AVFrame *pict, int *got_packet)

1553 {

1554 SnowContext *s = avctx->priv_data;

1555 RangeCoder * const c= &s->c;

1556 AVFrame *pic = pict;

1557 const int width= s->avctx->width;

1558 const int height= s->avctx->height;

1559 int level, orientation, plane_index, i, y, ret;

1560 uint8_t rc_header_bak[sizeof(s->header_state)];

1561 uint8_t rc_block_bak[sizeof(s->block_state)];

1562

1563 if ((ret = ff_alloc_packet2(avctx, pkt, s->b_width*s->b_height*MB_SIZE*MB_SIZE*3 + FF_MIN_BUFFER_SIZE)) < 0)

1564 return ret;

1565

1566 ff_init_range_encoder(c, pkt->data, pkt->size);

1567 ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);

1568

1569 for(i=0; i < s->nb_planes; i++){

1570 int hshift= i ? s->chroma_h_shift : 0;

1571 int vshift= i ? s->chroma_v_shift : 0;

1572 for(y=0; y<(height>>vshift); y++)

1573 memcpy(&s->input_picture->data[i][y * s->input_picture->linesize[i]],

1574 &pict->data[i][y * pict->linesize[i]],

1575 width>>hshift);

1576 s->dsp.draw_edges(s->input_picture->data[i], s->input_picture->linesize[i],

1577 width >> hshift, height >> vshift,

1578 EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,

1579 EDGE_TOP | EDGE_BOTTOM);

1580

1581 }

1582 emms_c();

1583 s->new_picture = pict;

1584

1585 s->m.picture_number= avctx->frame_number;

1586 if(avctx->flags&CODEC_FLAG_PASS2){

1587 s->m.pict_type = pic->pict_type = s->m.rc_context.entry[avctx->frame_number].new_pict_type;

1588 s->keyframe = pic->pict_type == AV_PICTURE_TYPE_I;

1589 if(!(avctx->flags&CODEC_FLAG_QSCALE)) {

1590 pic->quality = ff_rate_estimate_qscale(&s->m, 0);

1591 if (pic->quality < 0)

1592 return -1;

1593 }

1594 }else{

1595 s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;

1596 s->m.pict_type = pic->pict_type = s->keyframe ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P;

1597 }

1598

1599 if(s->pass1_rc && avctx->frame_number == 0)

1600 pic->quality = 2*FF_QP2LAMBDA;

1601 if (pic->quality) {

1602 s->qlog = qscale2qlog(pic->quality);

1603 s->lambda = pic->quality * 3/2;

1604 }

1605 if (s->qlog < 0 || (!pic->quality && (avctx->flags & CODEC_FLAG_QSCALE))) {

1606 s->qlog= LOSSLESS_QLOG;

1607 s->lambda = 0;

1608 }//else keep previous frame's qlog until after motion estimation

1609

1610 ff_snow_frame_start(s);

1611 avctx->coded_frame= s->current_picture;

1612

1613 s->m.current_picture_ptr= &s->m.current_picture;

1614 s->m.last_picture.f.pts = s->m.current_picture.f.pts;

1615 s->m.current_picture.f.pts = pict->pts;

1616 if(pic->pict_type == AV_PICTURE_TYPE_P){

1617 int block_width = (width +15)>>4;

1618 int block_height= (height+15)>>4;

1619 int stride= s->current_picture->linesize[0];

1620

1621 av_assert0(s->current_picture->data[0]);

1622 av_assert0(s->last_picture[0]->data[0]);

1623

1624 s->m.avctx= s->avctx;

1625 s->m.current_picture.f.data[0] = s->current_picture->data[0];

1626 s->m. last_picture.f.data[0] = s->last_picture[0]->data[0];

1627 s->m. new_picture.f.data[0] = s-> input_picture->data[0];

1628 s->m. last_picture_ptr= &s->m. last_picture;

1629 s->m.linesize=

1630 s->m. last_picture.f.linesize[0] =

1631 s->m. new_picture.f.linesize[0] =

1632 s->m.current_picture.f.linesize[0] = stride;

1633 s->m.uvlinesize= s->current_picture->linesize[1];

1634 s->m.width = width;

1635 s->m.height= height;

1636 s->m.mb_width = block_width;

1637 s->m.mb_height= block_height;

1638 s->m.mb_stride= s->m.mb_width+1;

1639 s->m.b8_stride= 2*s->m.mb_width+1;

1640 s->m.f_code=1;

1641 s->m.pict_type = pic->pict_type;

1642 s->m.me_method= s->avctx->me_method;

1643 s->m.me.scene_change_score=0;

1644 s->m.flags= s->avctx->flags;

1645 s->m.quarter_sample= (s->avctx->flags & CODEC_FLAG_QPEL)!=0;

1646 s->m.out_format= FMT_H263;

1647 s->m.unrestricted_mv= 1;

1648

1649 s->m.lambda = s->lambda;

1650 s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);

1651 s->lambda2= s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;

1652

1653 s->m.dsp= s->dsp; //move

1654 s->m.hdsp = s->hdsp;

1655 ff_init_me(&s->m);

1656 s->hdsp = s->m.hdsp;

1657 s->dsp= s->m.dsp;

1658 }

1659

1660 if(s->pass1_rc){

1661 memcpy(rc_header_bak, s->header_state, sizeof(s->header_state));

1662 memcpy(rc_block_bak, s->block_state, sizeof(s->block_state));

1663 }

1664

1665 redo_frame:

1666

1667 if (pic->pict_type == AV_PICTURE_TYPE_I)

1668 s->spatial_decomposition_count= 5;

1669 else

1670 s->spatial_decomposition_count= 5;

1671

1672 while( !(width >>(s->chroma_h_shift + s->spatial_decomposition_count))

1673 || !(height>>(s->chroma_v_shift + s->spatial_decomposition_count)))

1674 s->spatial_decomposition_count--;

1675

1676 if (s->spatial_decomposition_count <= 0) {

1677 av_log(avctx, AV_LOG_ERROR, "Resolution too low\n");

1678 return AVERROR(EINVAL);

1679 }

1680

1681 s->m.pict_type = pic->pict_type;

1682 s->qbias = pic->pict_type == AV_PICTURE_TYPE_P ? 2 : 0;

1683

1684 ff_snow_common_init_after_header(avctx);

1685

1686 if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){

1687 for(plane_index=0; plane_index < s->nb_planes; plane_index++){

1688 calculate_visual_weight(s, &s->plane[plane_index]);

1689 }

1690 }

1691

1692 encode_header(s);

1693 s->m.misc_bits = 8*(s->c.bytestream - s->c.bytestream_start);

1694 encode_blocks(s, 1);

1695 s->m.mv_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits;

1696

1697 for(plane_index=0; plane_index < s->nb_planes; plane_index++){

1698 Plane *p= &s->plane[plane_index];

1699 int w= p->width;

1700 int h= p->height;

1701 int x, y;

1702 // int bits= put_bits_count(&s->c.pb);

1703

1704 if (!s->memc_only) {

1705 //FIXME optimize

1706 if(pict->data[plane_index]) //FIXME gray hack

1707 for(y=0; y<h; y++){

1708 for(x=0; x<w; x++){

1709 s->spatial_idwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<FRAC_BITS;

1710 }

1711 }

1712 predict_plane(s, s->spatial_idwt_buffer, plane_index, 0);

1713

1714 if( plane_index==0

1715 && pic->pict_type == AV_PICTURE_TYPE_P

1716 && !(avctx->flags&CODEC_FLAG_PASS2)

1717 && s->m.me.scene_change_score > s->avctx->scenechange_threshold){

1718 ff_init_range_encoder(c, pkt->data, pkt->size);

1719 ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);

1720 pic->pict_type= AV_PICTURE_TYPE_I;

1721 s->keyframe=1;

1722 s->current_picture->key_frame=1;

1723 goto redo_frame;

1724 }

1725

1726 if(s->qlog == LOSSLESS_QLOG){

1727 for(y=0; y<h; y++){

1728 for(x=0; x<w; x++){

1729 s->spatial_dwt_buffer[y*w + x]= (s->spatial_idwt_buffer[y*w + x] + (1<<(FRAC_BITS-1))-1)>>FRAC_BITS;

1730 }

1731 }

1732 }else{

1733 for(y=0; y<h; y++){

1734 for(x=0; x<w; x++){

1735 s->spatial_dwt_buffer[y*w + x]=s->spatial_idwt_buffer[y*w + x]<<ENCODER_EXTRA_BITS;

1736 }

1737 }

1738 }

1739

1740 ff_spatial_dwt(s->spatial_dwt_buffer, s->temp_dwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);

1741

1742 if(s->pass1_rc && plane_index==0){

1743 int delta_qlog = ratecontrol_1pass(s, pic);

1744 if (delta_qlog <= INT_MIN)

1745 return -1;

1746 if(delta_qlog){

1747 //reordering qlog in the bitstream would eliminate this reset

1748 ff_init_range_encoder(c, pkt->data, pkt->size);

1749 memcpy(s->header_state, rc_header_bak, sizeof(s->header_state));

1750 memcpy(s->block_state, rc_block_bak, sizeof(s->block_state));

1751 encode_header(s);

1752 encode_blocks(s, 0);

1753 }

1754 }

1755

1756 for(level=0; level<s->spatial_decomposition_count; level++){

1757 for(orientation=level ? 1 : 0; orientation<4; orientation++){

1758 SubBand *b= &p->band[level][orientation];

1759

1760 quantize(s, b, b->ibuf, b->buf, b->stride, s->qbias);

1761 if(orientation==0)

1762 decorrelate(s, b, b->ibuf, b->stride, pic->pict_type == AV_PICTURE_TYPE_P, 0);

1763 if (!s->no_bitstream)

1764 encode_subband(s, b, b->ibuf, b->parent ? b->parent->ibuf : NULL, b->stride, orientation);

1765 av_assert0(b->parent==NULL || b->parent->stride == b->stride*2);

1766 if(orientation==0)

1767 correlate(s, b, b->ibuf, b->stride, 1, 0);

1768 }

1769 }

1770

1771 for(level=0; level<s->spatial_decomposition_count; level++){

1772 for(orientation=level ? 1 : 0; orientation<4; orientation++){

1773 SubBand *b= &p->band[level][orientation];

1774

1775 dequantize(s, b, b->ibuf, b->stride);

1776 }

1777 }

1778

1779 ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);

1780 if(s->qlog == LOSSLESS_QLOG){

1781 for(y=0; y<h; y++){

1782 for(x=0; x<w; x++){

1783 s->spatial_idwt_buffer[y*w + x]<<=FRAC_BITS;

1784 }

1785 }

1786 }

1787 predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);

1788 }else{

1789 //ME/MC only

1790 if(pic->pict_type == AV_PICTURE_TYPE_I){

1791 for(y=0; y<h; y++){

1792 for(x=0; x<w; x++){

1793 s->current_picture->data[plane_index][y*s->current_picture->linesize[plane_index] + x]=

1794 pict->data[plane_index][y*pict->linesize[plane_index] + x];

1795 }

1796 }

1797 }else{

1798 memset(s->spatial_idwt_buffer, 0, sizeof(IDWTELEM)*w*h);

1799 predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);

1800 }

1801 }

1802 if(s->avctx->flags&CODEC_FLAG_PSNR){

1803 int64_t error= 0;

1804

1805 if(pict->data[plane_index]) //FIXME gray hack

1806 for(y=0; y<h; y++){

1807 for(x=0; x<w; x++){

1808 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];

1809 error += d*d;

1810 }

1811 }

1812 s->avctx->error[plane_index] += error;

1813 s->current_picture->error[plane_index] = error;

1814 }

1815

1816 }

1817

1818 update_last_header_values(s);

1819

1820 ff_snow_release_buffer(avctx);