2 * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
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.
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.
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
21 #include "libavutil/intmath.h"
22 #include "libavutil/libm.h"
23 #include "libavutil/log.h"
24 #include "libavutil/opt.h"
30 #include "rangecoder.h"
33 #include "mpegvideo.h"
38 static av_cold int encode_init(AVCodecContext *avctx)
40 SnowContext *s = avctx->priv_data;
44 if(avctx->prediction_method == DWT_97
45 && (avctx->flags & AV_CODEC_FLAG_QSCALE)
46 && avctx->global_quality == 0){
47 av_log(avctx, AV_LOG_ERROR, "The 9/7 wavelet is incompatible with lossless mode.\n");
51 FF_DISABLE_DEPRECATION_WARNINGS
52 if (avctx->me_method == ME_ITER)
53 s->motion_est = FF_ME_ITER;
54 FF_ENABLE_DEPRECATION_WARNINGS
57 s->spatial_decomposition_type= avctx->prediction_method; //FIXME add decorrelator type r transform_type
59 s->mv_scale = (avctx->flags & AV_CODEC_FLAG_QPEL) ? 2 : 4;
60 s->block_max_depth= (avctx->flags & AV_CODEC_FLAG_4MV ) ? 1 : 0;
62 for(plane_index=0; plane_index<3; plane_index++){
63 s->plane[plane_index].diag_mc= 1;
64 s->plane[plane_index].htaps= 6;
65 s->plane[plane_index].hcoeff[0]= 40;
66 s->plane[plane_index].hcoeff[1]= -10;
67 s->plane[plane_index].hcoeff[2]= 2;
68 s->plane[plane_index].fast_mc= 1;
71 if ((ret = ff_snow_common_init(avctx)) < 0) {
74 ff_mpegvideoencdsp_init(&s->mpvencdsp, avctx);
76 ff_snow_alloc_blocks(s);
81 s->m.bit_rate= avctx->bit_rate;
84 s->m.me.scratchpad= av_mallocz_array((avctx->width+64), 2*16*2*sizeof(uint8_t));
85 s->m.me.map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
86 s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
87 s->m.sc.obmc_scratchpad= av_mallocz(MB_SIZE*MB_SIZE*12*sizeof(uint32_t));
88 if (!s->m.me.scratchpad || !s->m.me.map || !s->m.me.score_map || !s->m.sc.obmc_scratchpad)
89 return AVERROR(ENOMEM);
91 ff_h263_encode_init(&s->m); //mv_penalty
93 s->max_ref_frames = av_clip(avctx->refs, 1, MAX_REF_FRAMES);
95 if(avctx->flags&AV_CODEC_FLAG_PASS1){
97 avctx->stats_out = av_mallocz(256);
99 if (!avctx->stats_out)
100 return AVERROR(ENOMEM);
102 if((avctx->flags&AV_CODEC_FLAG_PASS2) || !(avctx->flags&CODEC_FLAG_QSCALE)){
103 if(ff_rate_control_init(&s->m) < 0)
106 s->pass1_rc= !(avctx->flags & (AV_CODEC_FLAG_QSCALE|CODEC_FLAG_PASS2));
108 switch(avctx->pix_fmt){
109 case AV_PIX_FMT_YUV444P:
110 // case AV_PIX_FMT_YUV422P:
111 case AV_PIX_FMT_YUV420P:
112 // case AV_PIX_FMT_YUV411P:
113 case AV_PIX_FMT_YUV410P:
115 s->colorspace_type= 0;
117 case AV_PIX_FMT_GRAY8:
119 s->colorspace_type = 1;
121 /* case AV_PIX_FMT_RGB32:
125 av_log(avctx, AV_LOG_ERROR, "pixel format not supported\n");
128 avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
130 ff_set_cmp(&s->mecc, s->mecc.me_cmp, s->avctx->me_cmp);
131 ff_set_cmp(&s->mecc, s->mecc.me_sub_cmp, s->avctx->me_sub_cmp);
133 s->input_picture = av_frame_alloc();
134 if (!s->input_picture)
135 return AVERROR(ENOMEM);
137 if ((ret = ff_snow_get_buffer(s, s->input_picture)) < 0)
140 if(s->motion_est == FF_ME_ITER){
141 int size= s->b_width * s->b_height << 2*s->block_max_depth;
142 for(i=0; i<s->max_ref_frames; i++){
143 s->ref_mvs[i]= av_mallocz_array(size, sizeof(int16_t[2]));
144 s->ref_scores[i]= av_mallocz_array(size, sizeof(uint32_t));
145 if (!s->ref_mvs[i] || !s->ref_scores[i])
146 return AVERROR(ENOMEM);
153 //near copy & paste from dsputil, FIXME
154 static int pix_sum(uint8_t * pix, int line_size, int w, int h)
159 for (i = 0; i < h; i++) {
160 for (j = 0; j < w; j++) {
164 pix += line_size - w;
169 //near copy & paste from dsputil, FIXME
170 static int pix_norm1(uint8_t * pix, int line_size, int w)
173 uint32_t *sq = ff_square_tab + 256;
176 for (i = 0; i < w; i++) {
177 for (j = 0; j < w; j ++) {
181 pix += line_size - w;
186 static inline int get_penalty_factor(int lambda, int lambda2, int type){
190 return lambda>>FF_LAMBDA_SHIFT;
192 return (3*lambda)>>(FF_LAMBDA_SHIFT+1);
194 return (4*lambda)>>(FF_LAMBDA_SHIFT);
196 return (2*lambda)>>(FF_LAMBDA_SHIFT);
199 return (2*lambda)>>FF_LAMBDA_SHIFT;
204 return lambda2>>FF_LAMBDA_SHIFT;
213 #define P_TOPRIGHT P[3]
214 #define P_MEDIAN P[4]
216 #define FLAG_QPEL 1 //must be 1
218 static int encode_q_branch(SnowContext *s, int level, int x, int y){
219 uint8_t p_buffer[1024];
220 uint8_t i_buffer[1024];
221 uint8_t p_state[sizeof(s->block_state)];
222 uint8_t i_state[sizeof(s->block_state)];
224 uint8_t *pbbak= s->c.bytestream;
225 uint8_t *pbbak_start= s->c.bytestream_start;
226 int score, score2, iscore, i_len, p_len, block_s, sum, base_bits;
227 const int w= s->b_width << s->block_max_depth;
228 const int h= s->b_height << s->block_max_depth;
229 const int rem_depth= s->block_max_depth - level;
230 const int index= (x + y*w) << rem_depth;
231 const int block_w= 1<<(LOG2_MB_SIZE - level);
232 int trx= (x+1)<<rem_depth;
233 int try= (y+1)<<rem_depth;
234 const BlockNode *left = x ? &s->block[index-1] : &null_block;
235 const BlockNode *top = y ? &s->block[index-w] : &null_block;
236 const BlockNode *right = trx<w ? &s->block[index+1] : &null_block;
237 const BlockNode *bottom= try<h ? &s->block[index+w] : &null_block;
238 const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
239 const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
240 int pl = left->color[0];
241 int pcb= left->color[1];
242 int pcr= left->color[2];
246 const int stride= s->current_picture->linesize[0];
247 const int uvstride= s->current_picture->linesize[1];
248 uint8_t *current_data[3]= { s->input_picture->data[0] + (x + y* stride)*block_w,
249 s->input_picture->data[1] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift),
250 s->input_picture->data[2] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift)};
252 int16_t last_mv[3][2];
253 int qpel= !!(s->avctx->flags & AV_CODEC_FLAG_QPEL); //unused
254 const int shift= 1+qpel;
255 MotionEstContext *c= &s->m.me;
256 int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
257 int mx_context= av_log2(2*FFABS(left->mx - top->mx));
258 int my_context= av_log2(2*FFABS(left->my - top->my));
259 int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
260 int ref, best_ref, ref_score, ref_mx, ref_my;
262 av_assert0(sizeof(s->block_state) >= 256);
264 set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
268 // clip predictors / edge ?
274 P_TOPRIGHT[0]= tr->mx;
275 P_TOPRIGHT[1]= tr->my;
277 last_mv[0][0]= s->block[index].mx;
278 last_mv[0][1]= s->block[index].my;
279 last_mv[1][0]= right->mx;
280 last_mv[1][1]= right->my;
281 last_mv[2][0]= bottom->mx;
282 last_mv[2][1]= bottom->my;
289 av_assert1(c-> stride == stride);
290 av_assert1(c->uvstride == uvstride);
292 c->penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_cmp);
293 c->sub_penalty_factor= get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_sub_cmp);
294 c->mb_penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->mb_cmp);
295 c->current_mv_penalty= c->mv_penalty[s->m.f_code=1] + MAX_MV;
297 c->xmin = - x*block_w - 16+3;
298 c->ymin = - y*block_w - 16+3;
299 c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
300 c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
302 if(P_LEFT[0] > (c->xmax<<shift)) P_LEFT[0] = (c->xmax<<shift);
303 if(P_LEFT[1] > (c->ymax<<shift)) P_LEFT[1] = (c->ymax<<shift);
304 if(P_TOP[0] > (c->xmax<<shift)) P_TOP[0] = (c->xmax<<shift);
305 if(P_TOP[1] > (c->ymax<<shift)) P_TOP[1] = (c->ymax<<shift);
306 if(P_TOPRIGHT[0] < (c->xmin<<shift)) P_TOPRIGHT[0]= (c->xmin<<shift);
307 if(P_TOPRIGHT[0] > (c->xmax<<shift)) P_TOPRIGHT[0]= (c->xmax<<shift); //due to pmx no clip
308 if(P_TOPRIGHT[1] > (c->ymax<<shift)) P_TOPRIGHT[1]= (c->ymax<<shift);
310 P_MEDIAN[0]= mid_pred(P_LEFT[0], P_TOP[0], P_TOPRIGHT[0]);
311 P_MEDIAN[1]= mid_pred(P_LEFT[1], P_TOP[1], P_TOPRIGHT[1]);
314 c->pred_x= P_LEFT[0];
315 c->pred_y= P_LEFT[1];
317 c->pred_x = P_MEDIAN[0];
318 c->pred_y = P_MEDIAN[1];
323 for(ref=0; ref<s->ref_frames; ref++){
324 init_ref(c, current_data, s->last_picture[ref]->data, NULL, block_w*x, block_w*y, 0);
326 ref_score= ff_epzs_motion_search(&s->m, &ref_mx, &ref_my, P, 0, /*ref_index*/ 0, last_mv,
327 (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w);
329 av_assert2(ref_mx >= c->xmin);
330 av_assert2(ref_mx <= c->xmax);
331 av_assert2(ref_my >= c->ymin);
332 av_assert2(ref_my <= c->ymax);
334 ref_score= c->sub_motion_search(&s->m, &ref_mx, &ref_my, ref_score, 0, 0, level-LOG2_MB_SIZE+4, block_w);
335 ref_score= ff_get_mb_score(&s->m, ref_mx, ref_my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0);
336 ref_score+= 2*av_log2(2*ref)*c->penalty_factor;
338 s->ref_mvs[ref][index][0]= ref_mx;
339 s->ref_mvs[ref][index][1]= ref_my;
340 s->ref_scores[ref][index]= ref_score;
342 if(score > ref_score){
349 //FIXME if mb_cmp != SSE then intra cannot be compared currently and mb_penalty vs. lambda2
352 base_bits= get_rac_count(&s->c) - 8*(s->c.bytestream - s->c.bytestream_start);
355 pc.bytestream= p_buffer; //FIXME end/start? and at the other stoo
356 memcpy(p_state, s->block_state, sizeof(s->block_state));
358 if(level!=s->block_max_depth)
359 put_rac(&pc, &p_state[4 + s_context], 1);
360 put_rac(&pc, &p_state[1 + left->type + top->type], 0);
361 if(s->ref_frames > 1)
362 put_symbol(&pc, &p_state[128 + 1024 + 32*ref_context], best_ref, 0);
363 pred_mv(s, &pmx, &pmy, best_ref, left, top, tr);
364 put_symbol(&pc, &p_state[128 + 32*(mx_context + 16*!!best_ref)], mx - pmx, 1);
365 put_symbol(&pc, &p_state[128 + 32*(my_context + 16*!!best_ref)], my - pmy, 1);
366 p_len= pc.bytestream - pc.bytestream_start;
367 score += (s->lambda2*(get_rac_count(&pc)-base_bits))>>FF_LAMBDA_SHIFT;
369 block_s= block_w*block_w;
370 sum = pix_sum(current_data[0], stride, block_w, block_w);
371 l= (sum + block_s/2)/block_s;
372 iscore = pix_norm1(current_data[0], stride, block_w) - 2*l*sum + l*l*block_s;
374 if (s->nb_planes > 2) {
375 block_s= block_w*block_w>>(s->chroma_h_shift + s->chroma_v_shift);
376 sum = pix_sum(current_data[1], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
377 cb= (sum + block_s/2)/block_s;
378 // iscore += pix_norm1(¤t_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s;
379 sum = pix_sum(current_data[2], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
380 cr= (sum + block_s/2)/block_s;
381 // iscore += pix_norm1(¤t_mb[2][0], uvstride, block_w>>1) - 2*cr*sum + cr*cr*block_s;
387 ic.bytestream= i_buffer; //FIXME end/start? and at the other stoo
388 memcpy(i_state, s->block_state, sizeof(s->block_state));
389 if(level!=s->block_max_depth)
390 put_rac(&ic, &i_state[4 + s_context], 1);
391 put_rac(&ic, &i_state[1 + left->type + top->type], 1);
392 put_symbol(&ic, &i_state[32], l-pl , 1);
393 if (s->nb_planes > 2) {
394 put_symbol(&ic, &i_state[64], cb-pcb, 1);
395 put_symbol(&ic, &i_state[96], cr-pcr, 1);
397 i_len= ic.bytestream - ic.bytestream_start;
398 iscore += (s->lambda2*(get_rac_count(&ic)-base_bits))>>FF_LAMBDA_SHIFT;
400 av_assert1(iscore < 255*255*256 + s->lambda2*10);
401 av_assert1(iscore >= 0);
402 av_assert1(l>=0 && l<=255);
403 av_assert1(pl>=0 && pl<=255);
406 int varc= iscore >> 8;
407 int vard= score >> 8;
408 if (vard <= 64 || vard < varc)
409 c->scene_change_score+= ff_sqrt(vard) - ff_sqrt(varc);
411 c->scene_change_score+= s->m.qscale;
414 if(level!=s->block_max_depth){
415 put_rac(&s->c, &s->block_state[4 + s_context], 0);
416 score2 = encode_q_branch(s, level+1, 2*x+0, 2*y+0);
417 score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+0);
418 score2+= encode_q_branch(s, level+1, 2*x+0, 2*y+1);
419 score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+1);
420 score2+= s->lambda2>>FF_LAMBDA_SHIFT; //FIXME exact split overhead
422 if(score2 < score && score2 < iscore)
427 pred_mv(s, &pmx, &pmy, 0, left, top, tr);
428 memcpy(pbbak, i_buffer, i_len);
430 s->c.bytestream_start= pbbak_start;
431 s->c.bytestream= pbbak + i_len;
432 set_blocks(s, level, x, y, l, cb, cr, pmx, pmy, 0, BLOCK_INTRA);
433 memcpy(s->block_state, i_state, sizeof(s->block_state));
436 memcpy(pbbak, p_buffer, p_len);
438 s->c.bytestream_start= pbbak_start;
439 s->c.bytestream= pbbak + p_len;
440 set_blocks(s, level, x, y, pl, pcb, pcr, mx, my, best_ref, 0);
441 memcpy(s->block_state, p_state, sizeof(s->block_state));
446 static void encode_q_branch2(SnowContext *s, int level, int x, int y){
447 const int w= s->b_width << s->block_max_depth;
448 const int rem_depth= s->block_max_depth - level;
449 const int index= (x + y*w) << rem_depth;
450 int trx= (x+1)<<rem_depth;
451 BlockNode *b= &s->block[index];
452 const BlockNode *left = x ? &s->block[index-1] : &null_block;
453 const BlockNode *top = y ? &s->block[index-w] : &null_block;
454 const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
455 const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
456 int pl = left->color[0];
457 int pcb= left->color[1];
458 int pcr= left->color[2];
460 int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
461 int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 16*!!b->ref;
462 int my_context= av_log2(2*FFABS(left->my - top->my)) + 16*!!b->ref;
463 int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
466 set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
470 if(level!=s->block_max_depth){
471 if(same_block(b,b+1) && same_block(b,b+w) && same_block(b,b+w+1)){
472 put_rac(&s->c, &s->block_state[4 + s_context], 1);
474 put_rac(&s->c, &s->block_state[4 + s_context], 0);
475 encode_q_branch2(s, level+1, 2*x+0, 2*y+0);
476 encode_q_branch2(s, level+1, 2*x+1, 2*y+0);
477 encode_q_branch2(s, level+1, 2*x+0, 2*y+1);
478 encode_q_branch2(s, level+1, 2*x+1, 2*y+1);
482 if(b->type & BLOCK_INTRA){
483 pred_mv(s, &pmx, &pmy, 0, left, top, tr);
484 put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 1);
485 put_symbol(&s->c, &s->block_state[32], b->color[0]-pl , 1);
486 if (s->nb_planes > 2) {
487 put_symbol(&s->c, &s->block_state[64], b->color[1]-pcb, 1);
488 put_symbol(&s->c, &s->block_state[96], b->color[2]-pcr, 1);
490 set_blocks(s, level, x, y, b->color[0], b->color[1], b->color[2], pmx, pmy, 0, BLOCK_INTRA);
492 pred_mv(s, &pmx, &pmy, b->ref, left, top, tr);
493 put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 0);
494 if(s->ref_frames > 1)
495 put_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], b->ref, 0);
496 put_symbol(&s->c, &s->block_state[128 + 32*mx_context], b->mx - pmx, 1);
497 put_symbol(&s->c, &s->block_state[128 + 32*my_context], b->my - pmy, 1);
498 set_blocks(s, level, x, y, pl, pcb, pcr, b->mx, b->my, b->ref, 0);
502 static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){
504 Plane *p= &s->plane[plane_index];
505 const int block_size = MB_SIZE >> s->block_max_depth;
506 const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
507 const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
508 const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
509 const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
510 const int ref_stride= s->current_picture->linesize[plane_index];
511 uint8_t *src= s-> input_picture->data[plane_index];
512 IDWTELEM *dst= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4; //FIXME change to unsigned
513 const int b_stride = s->b_width << s->block_max_depth;
514 const int w= p->width;
515 const int h= p->height;
516 int index= mb_x + mb_y*b_stride;
517 BlockNode *b= &s->block[index];
518 BlockNode backup= *b;
522 av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc stuff above
524 b->type|= BLOCK_INTRA;
525 b->color[plane_index]= 0;
526 memset(dst, 0, obmc_stride*obmc_stride*sizeof(IDWTELEM));
529 int mb_x2= mb_x + (i &1) - 1;
530 int mb_y2= mb_y + (i>>1) - 1;
531 int x= block_w*mb_x2 + block_w/2;
532 int y= block_h*mb_y2 + block_h/2;
534 add_yblock(s, 0, NULL, dst + (i&1)*block_w + (i>>1)*obmc_stride*block_h, NULL, obmc,
535 x, y, block_w, block_h, w, h, obmc_stride, ref_stride, obmc_stride, mb_x2, mb_y2, 0, 0, plane_index);
537 for(y2= FFMAX(y, 0); y2<FFMIN(h, y+block_h); y2++){
538 for(x2= FFMAX(x, 0); x2<FFMIN(w, x+block_w); x2++){
539 int index= x2-(block_w*mb_x - block_w/2) + (y2-(block_h*mb_y - block_h/2))*obmc_stride;
540 int obmc_v= obmc[index];
542 if(y<0) obmc_v += obmc[index + block_h*obmc_stride];
543 if(x<0) obmc_v += obmc[index + block_w];
544 if(y+block_h>h) obmc_v += obmc[index - block_h*obmc_stride];
545 if(x+block_w>w) obmc_v += obmc[index - block_w];
546 //FIXME precalculate this or simplify it somehow else
548 d = -dst[index] + (1<<(FRAC_BITS-1));
550 ab += (src[x2 + y2*ref_stride] - (d>>FRAC_BITS)) * obmc_v;
551 aa += obmc_v * obmc_v; //FIXME precalculate this
557 return av_clip_uint8( ROUNDED_DIV(ab<<LOG2_OBMC_MAX, aa) ); //FIXME we should not need clipping
560 static inline int get_block_bits(SnowContext *s, int x, int y, int w){
561 const int b_stride = s->b_width << s->block_max_depth;
562 const int b_height = s->b_height<< s->block_max_depth;
563 int index= x + y*b_stride;
564 const BlockNode *b = &s->block[index];
565 const BlockNode *left = x ? &s->block[index-1] : &null_block;
566 const BlockNode *top = y ? &s->block[index-b_stride] : &null_block;
567 const BlockNode *tl = y && x ? &s->block[index-b_stride-1] : left;
568 const BlockNode *tr = y && x+w<b_stride ? &s->block[index-b_stride+w] : tl;
570 // int mx_context= av_log2(2*FFABS(left->mx - top->mx));
571 // int my_context= av_log2(2*FFABS(left->my - top->my));
573 if(x<0 || x>=b_stride || y>=b_height)
582 //FIXME try accurate rate
583 //FIXME intra and inter predictors if surrounding blocks are not the same type
584 if(b->type & BLOCK_INTRA){
585 return 3+2*( av_log2(2*FFABS(left->color[0] - b->color[0]))
586 + av_log2(2*FFABS(left->color[1] - b->color[1]))
587 + av_log2(2*FFABS(left->color[2] - b->color[2])));
589 pred_mv(s, &dmx, &dmy, b->ref, left, top, tr);
592 return 2*(1 + av_log2(2*FFABS(dmx)) //FIXME kill the 2* can be merged in lambda
593 + av_log2(2*FFABS(dmy))
594 + av_log2(2*b->ref));
598 static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, uint8_t (*obmc_edged)[MB_SIZE * 2]){
599 Plane *p= &s->plane[plane_index];
600 const int block_size = MB_SIZE >> s->block_max_depth;
601 const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
602 const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
603 const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
604 const int ref_stride= s->current_picture->linesize[plane_index];
605 uint8_t *dst= s->current_picture->data[plane_index];
606 uint8_t *src= s-> input_picture->data[plane_index];
607 IDWTELEM *pred= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4;
608 uint8_t *cur = s->scratchbuf;
609 uint8_t *tmp = s->emu_edge_buffer;
610 const int b_stride = s->b_width << s->block_max_depth;
611 const int b_height = s->b_height<< s->block_max_depth;
612 const int w= p->width;
613 const int h= p->height;
616 const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
617 int sx= block_w*mb_x - block_w/2;
618 int sy= block_h*mb_y - block_h/2;
619 int x0= FFMAX(0,-sx);
620 int y0= FFMAX(0,-sy);
621 int x1= FFMIN(block_w*2, w-sx);
622 int y1= FFMIN(block_h*2, h-sy);
625 av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below chckinhg only block_w
627 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);
629 for(y=y0; y<y1; y++){
630 const uint8_t *obmc1= obmc_edged[y];
631 const IDWTELEM *pred1 = pred + y*obmc_stride;
632 uint8_t *cur1 = cur + y*ref_stride;
633 uint8_t *dst1 = dst + sx + (sy+y)*ref_stride;
634 for(x=x0; x<x1; x++){
635 #if FRAC_BITS >= LOG2_OBMC_MAX
636 int v = (cur1[x] * obmc1[x]) << (FRAC_BITS - LOG2_OBMC_MAX);
638 int v = (cur1[x] * obmc1[x] + (1<<(LOG2_OBMC_MAX - FRAC_BITS-1))) >> (LOG2_OBMC_MAX - FRAC_BITS);
640 v = (v + pred1[x]) >> FRAC_BITS;
641 if(v&(~255)) v= ~(v>>31);
646 /* copy the regions where obmc[] = (uint8_t)256 */
647 if(LOG2_OBMC_MAX == 8
648 && (mb_x == 0 || mb_x == b_stride-1)
649 && (mb_y == 0 || mb_y == b_height-1)){
659 memcpy(dst + sx+x0 + (sy+y)*ref_stride, cur + x0 + y*ref_stride, x1-x0);
663 /* FIXME rearrange dsputil to fit 32x32 cmp functions */
664 /* FIXME check alignment of the cmp wavelet vs the encoding wavelet */
665 /* FIXME cmps overlap but do not cover the wavelet's whole support.
666 * So improving the score of one block is not strictly guaranteed
667 * to improve the score of the whole frame, thus iterative motion
668 * estimation does not always converge. */
669 if(s->avctx->me_cmp == FF_CMP_W97)
670 distortion = ff_w97_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
671 else if(s->avctx->me_cmp == FF_CMP_W53)
672 distortion = ff_w53_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
676 int off = sx+16*(i&1) + (sy+16*(i>>1))*ref_stride;
677 distortion += s->mecc.me_cmp[0](&s->m, src + off, dst + off, ref_stride, 16);
681 av_assert2(block_w==8);
682 distortion = s->mecc.me_cmp[0](&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, block_w*2);
691 rate += get_block_bits(s, mb_x + (i&1) - (i>>1), mb_y + (i>>1), 1);
693 if(mb_x == b_stride-2)
694 rate += get_block_bits(s, mb_x + 1, mb_y + 1, 1);
696 return distortion + rate*penalty_factor;
699 static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){
701 Plane *p= &s->plane[plane_index];
702 const int block_size = MB_SIZE >> s->block_max_depth;
703 const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
704 const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
705 const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
706 const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
707 const int ref_stride= s->current_picture->linesize[plane_index];
708 uint8_t *dst= s->current_picture->data[plane_index];
709 uint8_t *src= s-> input_picture->data[plane_index];
710 //FIXME zero_dst is const but add_yblock changes dst if add is 0 (this is never the case for dst=zero_dst
711 // const has only been removed from zero_dst to suppress a warning
712 static IDWTELEM zero_dst[4096]; //FIXME
713 const int b_stride = s->b_width << s->block_max_depth;
714 const int w= p->width;
715 const int h= p->height;
718 const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
720 av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below
723 int mb_x2= mb_x + (i%3) - 1;
724 int mb_y2= mb_y + (i/3) - 1;
725 int x= block_w*mb_x2 + block_w/2;
726 int y= block_h*mb_y2 + block_h/2;
728 add_yblock(s, 0, NULL, zero_dst, dst, obmc,
729 x, y, block_w, block_h, w, h, /*dst_stride*/0, ref_stride, obmc_stride, mb_x2, mb_y2, 1, 1, plane_index);
731 //FIXME find a cleaner/simpler way to skip the outside stuff
732 for(y2= y; y2<0; y2++)
733 memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
734 for(y2= h; y2<y+block_h; y2++)
735 memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
737 for(y2= y; y2<y+block_h; y2++)
738 memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, -x);
741 for(y2= y; y2<y+block_h; y2++)
742 memcpy(dst + w + y2*ref_stride, src + w + y2*ref_stride, x+block_w - w);
745 av_assert1(block_w== 8 || block_w==16);
746 distortion += s->mecc.me_cmp[block_w==8](&s->m, src + x + y*ref_stride, dst + x + y*ref_stride, ref_stride, block_h);
750 BlockNode *b= &s->block[mb_x+mb_y*b_stride];
751 int merged= same_block(b,b+1) && same_block(b,b+b_stride) && same_block(b,b+b_stride+1);
759 rate = get_block_bits(s, mb_x, mb_y, 2);
760 for(i=merged?4:0; i<9; i++){
761 static const int dxy[9][2] = {{0,0},{1,0},{0,1},{1,1},{2,0},{2,1},{-1,2},{0,2},{1,2}};
762 rate += get_block_bits(s, mb_x + dxy[i][0], mb_y + dxy[i][1], 1);
765 return distortion + rate*penalty_factor;
768 static int encode_subband_c0run(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
769 const int w= b->width;
770 const int h= b->height;
775 int *runs = s->run_buffer;
782 int /*ll=0, */l=0, lt=0, t=0, rt=0;
783 v= src[x + y*stride];
786 t= src[x + (y-1)*stride];
788 lt= src[x - 1 + (y-1)*stride];
791 rt= src[x + 1 + (y-1)*stride];
795 l= src[x - 1 + y*stride];
797 if(orientation==1) ll= src[y + (x-2)*stride];
798 else ll= src[x - 2 + y*stride];
804 if(px<b->parent->width && py<b->parent->height)
805 p= parent[px + py*2*stride];
807 if(!(/*ll|*/l|lt|t|rt|p)){
809 runs[run_index++]= run;
817 max_index= run_index;
818 runs[run_index++]= run;
820 run= runs[run_index++];
822 put_symbol2(&s->c, b->state[30], max_index, 0);
823 if(run_index <= max_index)
824 put_symbol2(&s->c, b->state[1], run, 3);
827 if(s->c.bytestream_end - s->c.bytestream < w*40){
828 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
833 int /*ll=0, */l=0, lt=0, t=0, rt=0;
834 v= src[x + y*stride];
837 t= src[x + (y-1)*stride];
839 lt= src[x - 1 + (y-1)*stride];
842 rt= src[x + 1 + (y-1)*stride];
846 l= src[x - 1 + y*stride];
848 if(orientation==1) ll= src[y + (x-2)*stride];
849 else ll= src[x - 2 + y*stride];
855 if(px<b->parent->width && py<b->parent->height)
856 p= parent[px + py*2*stride];
858 if(/*ll|*/l|lt|t|rt|p){
859 int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
861 put_rac(&s->c, &b->state[0][context], !!v);
864 run= runs[run_index++];
866 if(run_index <= max_index)
867 put_symbol2(&s->c, b->state[1], run, 3);
875 int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
876 int l2= 2*FFABS(l) + (l<0);
877 int t2= 2*FFABS(t) + (t<0);
879 put_symbol2(&s->c, b->state[context + 2], FFABS(v)-1, context-4);
880 put_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l2&0xFF] + 3*ff_quant3bA[t2&0xFF]], v<0);
888 static int encode_subband(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
889 // encode_subband_qtree(s, b, src, parent, stride, orientation);
890 // encode_subband_z0run(s, b, src, parent, stride, orientation);
891 return encode_subband_c0run(s, b, src, parent, stride, orientation);
892 // encode_subband_dzr(s, b, src, parent, stride, orientation);
895 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){
896 const int b_stride= s->b_width << s->block_max_depth;
897 BlockNode *block= &s->block[mb_x + mb_y * b_stride];
898 BlockNode backup= *block;
902 av_assert2(mb_x>=0 && mb_y>=0);
903 av_assert2(mb_x<b_stride);
906 block->color[0] = p[0];
907 block->color[1] = p[1];
908 block->color[2] = p[2];
909 block->type |= BLOCK_INTRA;
911 index= (p[0] + 31*p[1]) & (ME_CACHE_SIZE-1);
912 value= s->me_cache_generation + (p[0]>>10) + (p[1]<<6) + (block->ref<<12);
913 if(s->me_cache[index] == value)
915 s->me_cache[index]= value;
919 block->type &= ~BLOCK_INTRA;
922 rd= get_block_rd(s, mb_x, mb_y, 0, obmc_edged) + s->intra_penalty * !!intra;
934 /* special case for int[2] args we discard afterwards,
935 * fixes compilation problem with gcc 2.95 */
936 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){
938 return check_block(s, mb_x, mb_y, p, 0, obmc_edged, best_rd);
941 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){
942 const int b_stride= s->b_width << s->block_max_depth;
943 BlockNode *block= &s->block[mb_x + mb_y * b_stride];
948 /* We don't initialize backup[] during variable declaration, because
949 * that fails to compile on MSVC: "cannot convert from 'BlockNode' to
951 backup[0] = block[0];
952 backup[1] = block[1];
953 backup[2] = block[b_stride];
954 backup[3] = block[b_stride + 1];
956 av_assert2(mb_x>=0 && mb_y>=0);
957 av_assert2(mb_x<b_stride);
958 av_assert2(((mb_x|mb_y)&1) == 0);
960 index= (p0 + 31*p1) & (ME_CACHE_SIZE-1);
961 value= s->me_cache_generation + (p0>>10) + (p1<<6) + (block->ref<<12);
962 if(s->me_cache[index] == value)
964 s->me_cache[index]= value;
969 block->type &= ~BLOCK_INTRA;
970 block[1]= block[b_stride]= block[b_stride+1]= *block;
972 rd= get_4block_rd(s, mb_x, mb_y, 0);
981 block[b_stride]= backup[2];
982 block[b_stride+1]= backup[3];
987 static void iterative_me(SnowContext *s){
988 int pass, mb_x, mb_y;
989 const int b_width = s->b_width << s->block_max_depth;
990 const int b_height= s->b_height << s->block_max_depth;
991 const int b_stride= b_width;
996 uint8_t state[sizeof(s->block_state)];
997 memcpy(state, s->block_state, sizeof(s->block_state));
998 for(mb_y= 0; mb_y<s->b_height; mb_y++)
999 for(mb_x= 0; mb_x<s->b_width; mb_x++)
1000 encode_q_branch(s, 0, mb_x, mb_y);
1002 memcpy(s->block_state, state, sizeof(s->block_state));
1005 for(pass=0; pass<25; pass++){
1008 for(mb_y= 0; mb_y<b_height; mb_y++){
1009 for(mb_x= 0; mb_x<b_width; mb_x++){
1010 int dia_change, i, j, ref;
1011 int best_rd= INT_MAX, ref_rd;
1012 BlockNode backup, ref_b;
1013 const int index= mb_x + mb_y * b_stride;
1014 BlockNode *block= &s->block[index];
1015 BlockNode *tb = mb_y ? &s->block[index-b_stride ] : NULL;
1016 BlockNode *lb = mb_x ? &s->block[index -1] : NULL;
1017 BlockNode *rb = mb_x+1<b_width ? &s->block[index +1] : NULL;
1018 BlockNode *bb = mb_y+1<b_height ? &s->block[index+b_stride ] : NULL;
1019 BlockNode *tlb= mb_x && mb_y ? &s->block[index-b_stride-1] : NULL;
1020 BlockNode *trb= mb_x+1<b_width && mb_y ? &s->block[index-b_stride+1] : NULL;
1021 BlockNode *blb= mb_x && mb_y+1<b_height ? &s->block[index+b_stride-1] : NULL;
1022 BlockNode *brb= mb_x+1<b_width && mb_y+1<b_height ? &s->block[index+b_stride+1] : NULL;
1023 const int b_w= (MB_SIZE >> s->block_max_depth);
1024 uint8_t obmc_edged[MB_SIZE * 2][MB_SIZE * 2];
1026 if(pass && (block->type & BLOCK_OPT))
1028 block->type |= BLOCK_OPT;
1032 if(!s->me_cache_generation)
1033 memset(s->me_cache, 0, sizeof(s->me_cache));
1034 s->me_cache_generation += 1<<22;
1036 //FIXME precalculate
1039 for (y = 0; y < b_w * 2; y++)
1040 memcpy(obmc_edged[y], ff_obmc_tab[s->block_max_depth] + y * b_w * 2, b_w * 2);
1042 for(y=0; y<b_w*2; y++)
1043 memset(obmc_edged[y], obmc_edged[y][0] + obmc_edged[y][b_w-1], b_w);
1044 if(mb_x==b_stride-1)
1045 for(y=0; y<b_w*2; y++)
1046 memset(obmc_edged[y]+b_w, obmc_edged[y][b_w] + obmc_edged[y][b_w*2-1], b_w);
1048 for(x=0; x<b_w*2; x++)
1049 obmc_edged[0][x] += obmc_edged[b_w-1][x];
1050 for(y=1; y<b_w; y++)
1051 memcpy(obmc_edged[y], obmc_edged[0], b_w*2);
1053 if(mb_y==b_height-1){
1054 for(x=0; x<b_w*2; x++)
1055 obmc_edged[b_w*2-1][x] += obmc_edged[b_w][x];
1056 for(y=b_w; y<b_w*2-1; y++)
1057 memcpy(obmc_edged[y], obmc_edged[b_w*2-1], b_w*2);
1061 //skip stuff outside the picture
1062 if(mb_x==0 || mb_y==0 || mb_x==b_width-1 || mb_y==b_height-1){
1063 uint8_t *src= s-> input_picture->data[0];
1064 uint8_t *dst= s->current_picture->data[0];
1065 const int stride= s->current_picture->linesize[0];
1066 const int block_w= MB_SIZE >> s->block_max_depth;
1067 const int block_h= MB_SIZE >> s->block_max_depth;
1068 const int sx= block_w*mb_x - block_w/2;
1069 const int sy= block_h*mb_y - block_h/2;
1070 const int w= s->plane[0].width;
1071 const int h= s->plane[0].height;
1075 memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1076 for(y=h; y<sy+block_h*2; y++)
1077 memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1079 for(y=sy; y<sy+block_h*2; y++)
1080 memcpy(dst + sx + y*stride, src + sx + y*stride, -sx);
1082 if(sx+block_w*2 > w){
1083 for(y=sy; y<sy+block_h*2; y++)
1084 memcpy(dst + w + y*stride, src + w + y*stride, sx+block_w*2 - w);
1088 // intra(black) = neighbors' contribution to the current block
1089 for(i=0; i < s->nb_planes; i++)
1090 color[i]= get_dc(s, mb_x, mb_y, i);
1092 // get previous score (cannot be cached due to OBMC)
1093 if(pass > 0 && (block->type&BLOCK_INTRA)){
1094 int color0[3]= {block->color[0], block->color[1], block->color[2]};
1095 check_block(s, mb_x, mb_y, color0, 1, obmc_edged, &best_rd);
1097 check_block_inter(s, mb_x, mb_y, block->mx, block->my, obmc_edged, &best_rd);
1101 for(ref=0; ref < s->ref_frames; ref++){
1102 int16_t (*mvr)[2]= &s->ref_mvs[ref][index];
1103 if(s->ref_scores[ref][index] > s->ref_scores[ref_b.ref][index]*3/2) //FIXME tune threshold
1108 check_block_inter(s, mb_x, mb_y, mvr[0][0], mvr[0][1], obmc_edged, &best_rd);
1109 check_block_inter(s, mb_x, mb_y, 0, 0, obmc_edged, &best_rd);
1111 check_block_inter(s, mb_x, mb_y, mvr[-b_stride][0], mvr[-b_stride][1], obmc_edged, &best_rd);
1113 check_block_inter(s, mb_x, mb_y, mvr[-1][0], mvr[-1][1], obmc_edged, &best_rd);
1115 check_block_inter(s, mb_x, mb_y, mvr[1][0], mvr[1][1], obmc_edged, &best_rd);
1117 check_block_inter(s, mb_x, mb_y, mvr[b_stride][0], mvr[b_stride][1], obmc_edged, &best_rd);
1120 //FIXME avoid subpel interpolation / round to nearest integer
1122 int newx = block->mx;
1123 int newy = block->my;
1124 int dia_size = s->iterative_dia_size ? s->iterative_dia_size : FFMAX(s->avctx->dia_size, 1);
1126 for(i=0; i < dia_size; i++){
1128 dia_change |= check_block_inter(s, mb_x, mb_y, newx+4*(i-j), newy+(4*j), obmc_edged, &best_rd);
1129 dia_change |= check_block_inter(s, mb_x, mb_y, newx-4*(i-j), newy-(4*j), obmc_edged, &best_rd);
1130 dia_change |= check_block_inter(s, mb_x, mb_y, newx-(4*j), newy+4*(i-j), obmc_edged, &best_rd);
1131 dia_change |= check_block_inter(s, mb_x, mb_y, newx+(4*j), newy-4*(i-j), obmc_edged, &best_rd);
1137 static const int square[8][2]= {{+1, 0},{-1, 0},{ 0,+1},{ 0,-1},{+1,+1},{-1,-1},{+1,-1},{-1,+1},};
1140 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+square[i][0], block->my+square[i][1], obmc_edged, &best_rd);
1142 //FIXME or try the standard 2 pass qpel or similar
1144 mvr[0][0]= block->mx;
1145 mvr[0][1]= block->my;
1146 if(ref_rd > best_rd){
1153 check_block(s, mb_x, mb_y, color, 1, obmc_edged, &best_rd);
1154 //FIXME RD style color selection
1155 if(!same_block(block, &backup)){
1156 if(tb ) tb ->type &= ~BLOCK_OPT;
1157 if(lb ) lb ->type &= ~BLOCK_OPT;
1158 if(rb ) rb ->type &= ~BLOCK_OPT;
1159 if(bb ) bb ->type &= ~BLOCK_OPT;
1160 if(tlb) tlb->type &= ~BLOCK_OPT;
1161 if(trb) trb->type &= ~BLOCK_OPT;
1162 if(blb) blb->type &= ~BLOCK_OPT;
1163 if(brb) brb->type &= ~BLOCK_OPT;
1168 av_log(s->avctx, AV_LOG_DEBUG, "pass:%d changed:%d\n", pass, change);
1173 if(s->block_max_depth == 1){
1175 for(mb_y= 0; mb_y<b_height; mb_y+=2){
1176 for(mb_x= 0; mb_x<b_width; mb_x+=2){
1178 int best_rd, init_rd;
1179 const int index= mb_x + mb_y * b_stride;
1182 b[0]= &s->block[index];
1184 b[2]= b[0]+b_stride;
1186 if(same_block(b[0], b[1]) &&
1187 same_block(b[0], b[2]) &&
1188 same_block(b[0], b[3]))
1191 if(!s->me_cache_generation)
1192 memset(s->me_cache, 0, sizeof(s->me_cache));
1193 s->me_cache_generation += 1<<22;
1195 init_rd= best_rd= get_4block_rd(s, mb_x, mb_y, 0);
1197 //FIXME more multiref search?
1198 check_4block_inter(s, mb_x, mb_y,
1199 (b[0]->mx + b[1]->mx + b[2]->mx + b[3]->mx + 2) >> 2,
1200 (b[0]->my + b[1]->my + b[2]->my + b[3]->my + 2) >> 2, 0, &best_rd);
1203 if(!(b[i]->type&BLOCK_INTRA))
1204 check_4block_inter(s, mb_x, mb_y, b[i]->mx, b[i]->my, b[i]->ref, &best_rd);
1206 if(init_rd != best_rd)
1210 av_log(s->avctx, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4);
1214 static void encode_blocks(SnowContext *s, int search){
1219 if(s->motion_est == FF_ME_ITER && !s->keyframe && search)
1223 if(s->c.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit
1224 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
1228 if(s->motion_est == FF_ME_ITER || !search)
1229 encode_q_branch2(s, 0, x, y);
1231 encode_q_branch (s, 0, x, y);
1236 static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias){
1237 const int w= b->width;
1238 const int h= b->height;
1239 const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1240 const int qmul= ff_qexp[qlog&(QROOT-1)]<<((qlog>>QSHIFT) + ENCODER_EXTRA_BITS);
1241 int x,y, thres1, thres2;
1243 if(s->qlog == LOSSLESS_QLOG){
1246 dst[x + y*stride]= src[x + y*stride];
1250 bias= bias ? 0 : (3*qmul)>>3;
1251 thres1= ((qmul - bias)>>QEXPSHIFT) - 1;
1257 int i= src[x + y*stride];
1259 if((unsigned)(i+thres1) > thres2){
1262 i/= qmul; //FIXME optimize
1263 dst[x + y*stride]= i;
1267 i/= qmul; //FIXME optimize
1268 dst[x + y*stride]= -i;
1271 dst[x + y*stride]= 0;
1277 int i= src[x + y*stride];
1279 if((unsigned)(i+thres1) > thres2){
1282 i= (i + bias) / qmul; //FIXME optimize
1283 dst[x + y*stride]= i;
1287 i= (i + bias) / qmul; //FIXME optimize
1288 dst[x + y*stride]= -i;
1291 dst[x + y*stride]= 0;
1297 static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride){
1298 const int w= b->width;
1299 const int h= b->height;
1300 const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1301 const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1302 const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
1305 if(s->qlog == LOSSLESS_QLOG) return;
1309 int i= src[x + y*stride];
1311 src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias
1313 src[x + y*stride]= (( i*qmul + qadd)>>(QEXPSHIFT));
1319 static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1320 const int w= b->width;
1321 const int h= b->height;
1324 for(y=h-1; y>=0; y--){
1325 for(x=w-1; x>=0; x--){
1326 int i= x + y*stride;
1330 if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1331 else src[i] -= src[i - 1];
1333 if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1334 else src[i] -= src[i - 1];
1337 if(y) src[i] -= src[i - stride];
1343 static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1344 const int w= b->width;
1345 const int h= b->height;
1350 int i= x + y*stride;
1354 if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1355 else src[i] += src[i - 1];
1357 if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1358 else src[i] += src[i - 1];
1361 if(y) src[i] += src[i - stride];
1367 static void encode_qlogs(SnowContext *s){
1368 int plane_index, level, orientation;
1370 for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1371 for(level=0; level<s->spatial_decomposition_count; level++){
1372 for(orientation=level ? 1:0; orientation<4; orientation++){
1373 if(orientation==2) continue;
1374 put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1);
1380 static void encode_header(SnowContext *s){
1384 memset(kstate, MID_STATE, sizeof(kstate));
1386 put_rac(&s->c, kstate, s->keyframe);
1387 if(s->keyframe || s->always_reset){
1388 ff_snow_reset_contexts(s);
1389 s->last_spatial_decomposition_type=
1393 s->last_block_max_depth= 0;
1394 for(plane_index=0; plane_index<2; plane_index++){
1395 Plane *p= &s->plane[plane_index];
1398 memset(p->last_hcoeff, 0, sizeof(p->last_hcoeff));
1402 put_symbol(&s->c, s->header_state, s->version, 0);
1403 put_rac(&s->c, s->header_state, s->always_reset);
1404 put_symbol(&s->c, s->header_state, s->temporal_decomposition_type, 0);
1405 put_symbol(&s->c, s->header_state, s->temporal_decomposition_count, 0);
1406 put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
1407 put_symbol(&s->c, s->header_state, s->colorspace_type, 0);
1408 if (s->nb_planes > 2) {
1409 put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0);
1410 put_symbol(&s->c, s->header_state, s->chroma_v_shift, 0);
1412 put_rac(&s->c, s->header_state, s->spatial_scalability);
1413 // put_rac(&s->c, s->header_state, s->rate_scalability);
1414 put_symbol(&s->c, s->header_state, s->max_ref_frames-1, 0);
1421 for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1422 Plane *p= &s->plane[plane_index];
1423 update_mc |= p->last_htaps != p->htaps;
1424 update_mc |= p->last_diag_mc != p->diag_mc;
1425 update_mc |= !!memcmp(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1427 put_rac(&s->c, s->header_state, update_mc);
1429 for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1430 Plane *p= &s->plane[plane_index];
1431 put_rac(&s->c, s->header_state, p->diag_mc);
1432 put_symbol(&s->c, s->header_state, p->htaps/2-1, 0);
1433 for(i= p->htaps/2; i; i--)
1434 put_symbol(&s->c, s->header_state, FFABS(p->hcoeff[i]), 0);
1437 if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
1438 put_rac(&s->c, s->header_state, 1);
1439 put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
1442 put_rac(&s->c, s->header_state, 0);
1445 put_symbol(&s->c, s->header_state, s->spatial_decomposition_type - s->last_spatial_decomposition_type, 1);
1446 put_symbol(&s->c, s->header_state, s->qlog - s->last_qlog , 1);
1447 put_symbol(&s->c, s->header_state, s->mv_scale - s->last_mv_scale, 1);
1448 put_symbol(&s->c, s->header_state, s->qbias - s->last_qbias , 1);
1449 put_symbol(&s->c, s->header_state, s->block_max_depth - s->last_block_max_depth, 1);
1453 static void update_last_header_values(SnowContext *s){
1457 for(plane_index=0; plane_index<2; plane_index++){
1458 Plane *p= &s->plane[plane_index];
1459 p->last_diag_mc= p->diag_mc;
1460 p->last_htaps = p->htaps;
1461 memcpy(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1465 s->last_spatial_decomposition_type = s->spatial_decomposition_type;
1466 s->last_qlog = s->qlog;
1467 s->last_qbias = s->qbias;
1468 s->last_mv_scale = s->mv_scale;
1469 s->last_block_max_depth = s->block_max_depth;
1470 s->last_spatial_decomposition_count = s->spatial_decomposition_count;
1473 static int qscale2qlog(int qscale){
1474 return lrint(QROOT*log2(qscale / (float)FF_QP2LAMBDA))
1475 + 61*QROOT/8; ///< 64 > 60
1478 static int ratecontrol_1pass(SnowContext *s, AVFrame *pict)
1480 /* Estimate the frame's complexity as a sum of weighted dwt coefficients.
1481 * FIXME we know exact mv bits at this point,
1482 * but ratecontrol isn't set up to include them. */
1483 uint32_t coef_sum= 0;
1484 int level, orientation, delta_qlog;
1486 for(level=0; level<s->spatial_decomposition_count; level++){
1487 for(orientation=level ? 1 : 0; orientation<4; orientation++){
1488 SubBand *b= &s->plane[0].band[level][orientation];
1489 IDWTELEM *buf= b->ibuf;
1490 const int w= b->width;
1491 const int h= b->height;
1492 const int stride= b->stride;
1493 const int qlog= av_clip(2*QROOT + b->qlog, 0, QROOT*16);
1494 const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1495 const int qdiv= (1<<16)/qmul;
1497 //FIXME this is ugly
1500 buf[x+y*stride]= b->buf[x+y*stride];
1502 decorrelate(s, b, buf, stride, 1, 0);
1505 coef_sum+= abs(buf[x+y*stride]) * qdiv >> 16;
1509 /* ugly, ratecontrol just takes a sqrt again */
1510 av_assert0(coef_sum < INT_MAX);
1511 coef_sum = (uint64_t)coef_sum * coef_sum >> 16;
1513 if(pict->pict_type == AV_PICTURE_TYPE_I){
1514 s->m.current_picture.mb_var_sum= coef_sum;
1515 s->m.current_picture.mc_mb_var_sum= 0;
1517 s->m.current_picture.mc_mb_var_sum= coef_sum;
1518 s->m.current_picture.mb_var_sum= 0;
1521 pict->quality= ff_rate_estimate_qscale(&s->m, 1);
1522 if (pict->quality < 0)
1524 s->lambda= pict->quality * 3/2;
1525 delta_qlog= qscale2qlog(pict->quality) - s->qlog;
1526 s->qlog+= delta_qlog;
1530 static void calculate_visual_weight(SnowContext *s, Plane *p){
1531 int width = p->width;
1532 int height= p->height;
1533 int level, orientation, x, y;
1535 for(level=0; level<s->spatial_decomposition_count; level++){
1536 for(orientation=level ? 1 : 0; orientation<4; orientation++){
1537 SubBand *b= &p->band[level][orientation];
1538 IDWTELEM *ibuf= b->ibuf;
1541 memset(s->spatial_idwt_buffer, 0, sizeof(*s->spatial_idwt_buffer)*width*height);
1542 ibuf[b->width/2 + b->height/2*b->stride]= 256*16;
1543 ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, width, height, width, s->spatial_decomposition_type, s->spatial_decomposition_count);
1544 for(y=0; y<height; y++){
1545 for(x=0; x<width; x++){
1546 int64_t d= s->spatial_idwt_buffer[x + y*width]*16;
1551 b->qlog= (int)(QROOT * log2(352256.0/sqrt(error)) + 0.5);
1556 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
1557 const AVFrame *pict, int *got_packet)
1559 SnowContext *s = avctx->priv_data;
1560 RangeCoder * const c= &s->c;
1562 const int width= s->avctx->width;
1563 const int height= s->avctx->height;
1564 int level, orientation, plane_index, i, y, ret;
1565 uint8_t rc_header_bak[sizeof(s->header_state)];
1566 uint8_t rc_block_bak[sizeof(s->block_state)];
1568 if ((ret = ff_alloc_packet2(avctx, pkt, s->b_width*s->b_height*MB_SIZE*MB_SIZE*3 + AV_INPUT_BUFFER_MIN_SIZE, 0)) < 0)
1571 ff_init_range_encoder(c, pkt->data, pkt->size);
1572 ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1574 for(i=0; i < s->nb_planes; i++){
1575 int hshift= i ? s->chroma_h_shift : 0;
1576 int vshift= i ? s->chroma_v_shift : 0;
1577 for(y=0; y<FF_CEIL_RSHIFT(height, vshift); y++)
1578 memcpy(&s->input_picture->data[i][y * s->input_picture->linesize[i]],
1579 &pict->data[i][y * pict->linesize[i]],
1580 FF_CEIL_RSHIFT(width, hshift));
1581 s->mpvencdsp.draw_edges(s->input_picture->data[i], s->input_picture->linesize[i],
1582 FF_CEIL_RSHIFT(width, hshift), FF_CEIL_RSHIFT(height, vshift),
1583 EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
1584 EDGE_TOP | EDGE_BOTTOM);
1588 pic = s->input_picture;
1589 pic->pict_type = pict->pict_type;
1590 pic->quality = pict->quality;
1592 s->m.picture_number= avctx->frame_number;
1593 if(avctx->flags&AV_CODEC_FLAG_PASS2){
1594 s->m.pict_type = pic->pict_type = s->m.rc_context.entry[avctx->frame_number].new_pict_type;
1595 s->keyframe = pic->pict_type == AV_PICTURE_TYPE_I;
1596 if(!(avctx->flags&AV_CODEC_FLAG_QSCALE)) {
1597 pic->quality = ff_rate_estimate_qscale(&s->m, 0);
1598 if (pic->quality < 0)
1602 s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
1603 s->m.pict_type = pic->pict_type = s->keyframe ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P;
1606 if(s->pass1_rc && avctx->frame_number == 0)
1607 pic->quality = 2*FF_QP2LAMBDA;
1609 s->qlog = qscale2qlog(pic->quality);
1610 s->lambda = pic->quality * 3/2;
1612 if (s->qlog < 0 || (!pic->quality && (avctx->flags & AV_CODEC_FLAG_QSCALE))) {
1613 s->qlog= LOSSLESS_QLOG;
1615 }//else keep previous frame's qlog until after motion estimation
1617 if (s->current_picture->data[0]
1619 && !(s->avctx->flags&CODEC_FLAG_EMU_EDGE)
1622 int w = s->avctx->width;
1623 int h = s->avctx->height;
1625 s->mpvencdsp.draw_edges(s->current_picture->data[0],
1626 s->current_picture->linesize[0], w , h ,
1627 EDGE_WIDTH , EDGE_WIDTH , EDGE_TOP | EDGE_BOTTOM);
1628 if (s->current_picture->data[2]) {
1629 s->mpvencdsp.draw_edges(s->current_picture->data[1],
1630 s->current_picture->linesize[1], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
1631 EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
1632 s->mpvencdsp.draw_edges(s->current_picture->data[2],
1633 s->current_picture->linesize[2], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
1634 EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
1638 ff_snow_frame_start(s);
1639 av_frame_unref(avctx->coded_frame);
1640 ret = av_frame_ref(avctx->coded_frame, s->current_picture);
1644 s->m.current_picture_ptr= &s->m.current_picture;
1645 s->m.current_picture.f = s->current_picture;
1646 s->m.current_picture.f->pts = pict->pts;
1647 if(pic->pict_type == AV_PICTURE_TYPE_P){
1648 int block_width = (width +15)>>4;
1649 int block_height= (height+15)>>4;
1650 int stride= s->current_picture->linesize[0];
1652 av_assert0(s->current_picture->data[0]);
1653 av_assert0(s->last_picture[0]->data[0]);
1655 s->m.avctx= s->avctx;
1656 s->m. last_picture.f = s->last_picture[0];
1657 s->m. new_picture.f = s->input_picture;
1658 s->m. last_picture_ptr= &s->m. last_picture;
1659 s->m.linesize = stride;
1660 s->m.uvlinesize= s->current_picture->linesize[1];
1662 s->m.height= height;
1663 s->m.mb_width = block_width;
1664 s->m.mb_height= block_height;
1665 s->m.mb_stride= s->m.mb_width+1;
1666 s->m.b8_stride= 2*s->m.mb_width+1;
1668 s->m.pict_type = pic->pict_type;
1669 #if FF_API_MOTION_EST
1670 s->m.me_method= s->avctx->me_method;
1672 s->m.motion_est= s->motion_est;
1673 s->m.me.scene_change_score=0;
1674 s->m.me.dia_size = avctx->dia_size;
1675 s->m.quarter_sample= (s->avctx->flags & AV_CODEC_FLAG_QPEL)!=0;
1676 s->m.out_format= FMT_H263;
1677 s->m.unrestricted_mv= 1;
1679 s->m.lambda = s->lambda;
1680 s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
1681 s->lambda2= s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
1683 s->m.mecc= s->mecc; //move
1684 s->m.qdsp= s->qdsp; //move
1685 s->m.hdsp = s->hdsp;
1687 s->hdsp = s->m.hdsp;
1692 memcpy(rc_header_bak, s->header_state, sizeof(s->header_state));
1693 memcpy(rc_block_bak, s->block_state, sizeof(s->block_state));
1698 s->spatial_decomposition_count= 5;
1700 while( !(width >>(s->chroma_h_shift + s->spatial_decomposition_count))
1701 || !(height>>(s->chroma_v_shift + s->spatial_decomposition_count)))
1702 s->spatial_decomposition_count--;
1704 if (s->spatial_decomposition_count <= 0) {
1705 av_log(avctx, AV_LOG_ERROR, "Resolution too low\n");
1706 return AVERROR(EINVAL);
1709 s->m.pict_type = pic->pict_type;
1710 s->qbias = pic->pict_type == AV_PICTURE_TYPE_P ? 2 : 0;
1712 ff_snow_common_init_after_header(avctx);
1714 if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
1715 for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1716 calculate_visual_weight(s, &s->plane[plane_index]);
1721 s->m.misc_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1722 encode_blocks(s, 1);
1723 s->m.mv_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits;
1725 for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1726 Plane *p= &s->plane[plane_index];
1730 // int bits= put_bits_count(&s->c.pb);
1732 if (!s->memc_only) {
1734 if(pict->data[plane_index]) //FIXME gray hack
1737 s->spatial_idwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<FRAC_BITS;
1740 predict_plane(s, s->spatial_idwt_buffer, plane_index, 0);
1743 && pic->pict_type == AV_PICTURE_TYPE_P
1744 && !(avctx->flags&AV_CODEC_FLAG_PASS2)
1745 && s->m.me.scene_change_score > s->avctx->scenechange_threshold){
1746 ff_init_range_encoder(c, pkt->data, pkt->size);
1747 ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1748 pic->pict_type= AV_PICTURE_TYPE_I;
1750 s->current_picture->key_frame=1;
1754 if(s->qlog == LOSSLESS_QLOG){
1757 s->spatial_dwt_buffer[y*w + x]= (s->spatial_idwt_buffer[y*w + x] + (1<<(FRAC_BITS-1))-1)>>FRAC_BITS;
1763 s->spatial_dwt_buffer[y*w + x]=s->spatial_idwt_buffer[y*w + x]<<ENCODER_EXTRA_BITS;
1768 ff_spatial_dwt(s->spatial_dwt_buffer, s->temp_dwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
1770 if(s->pass1_rc && plane_index==0){
1771 int delta_qlog = ratecontrol_1pass(s, pic);
1772 if (delta_qlog <= INT_MIN)
1775 //reordering qlog in the bitstream would eliminate this reset
1776 ff_init_range_encoder(c, pkt->data, pkt->size);
1777 memcpy(s->header_state, rc_header_bak, sizeof(s->header_state));
1778 memcpy(s->block_state, rc_block_bak, sizeof(s->block_state));
1780 encode_blocks(s, 0);
1784 for(level=0; level<s->spatial_decomposition_count; level++){
1785 for(orientation=level ? 1 : 0; orientation<4; orientation++){
1786 SubBand *b= &p->band[level][orientation];
1788 quantize(s, b, b->ibuf, b->buf, b->stride, s->qbias);
1790 decorrelate(s, b, b->ibuf, b->stride, pic->pict_type == AV_PICTURE_TYPE_P, 0);
1791 if (!s->no_bitstream)
1792 encode_subband(s, b, b->ibuf, b->parent ? b->parent->ibuf : NULL, b->stride, orientation);
1793 av_assert0(b->parent==NULL || b->parent->stride == b->stride*2);
1795 correlate(s, b, b->ibuf, b->stride, 1, 0);
1799 for(level=0; level<s->spatial_decomposition_count; level++){
1800 for(orientation=level ? 1 : 0; orientation<4; orientation++){
1801 SubBand *b= &p->band[level][orientation];
1803 dequantize(s, b, b->ibuf, b->stride);
1807 ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
1808 if(s->qlog == LOSSLESS_QLOG){
1811 s->spatial_idwt_buffer[y*w + x]<<=FRAC_BITS;
1815 predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1818 if(pic->pict_type == AV_PICTURE_TYPE_I){
1821 s->current_picture->data[plane_index][y*s->current_picture->linesize[plane_index] + x]=
1822 pict->data[plane_index][y*pict->linesize[plane_index] + x];
1826 memset(s->spatial_idwt_buffer, 0, sizeof(IDWTELEM)*w*h);
1827 predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1830 if(s->avctx->flags&AV_CODEC_FLAG_PSNR){
1833 if(pict->data[plane_index]) //FIXME gray hack
1836 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];
1840 s->avctx->error[plane_index] += error;
1841 s->encoding_error[plane_index] = error;
1846 update_last_header_values(s);
1848 ff_snow_release_buffer(avctx);
1850 s->current_picture->coded_picture_number = avctx->frame_number;
1851 s->current_picture->pict_type = pic->pict_type;
1852 s->current_picture->quality = pic->quality;
1853 s->m.frame_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1854 s->m.p_tex_bits = s->m.frame_bits - s->m.misc_bits - s->m.mv_bits;
1855 s->m.current_picture.f->display_picture_number =
1856 s->m.current_picture.f->coded_picture_number = avctx->frame_number;
1857 s->m.current_picture.f->quality = pic->quality;
1858 s->m.total_bits += 8*(s->c.bytestream - s->c.bytestream_start);
1860 if (ff_rate_estimate_qscale(&s->m, 0) < 0)
1862 if(avctx->flags&AV_CODEC_FLAG_PASS1)
1863 ff_write_pass1_stats(&s->m);
1864 s->m.last_pict_type = s->m.pict_type;
1865 avctx->frame_bits = s->m.frame_bits;
1866 avctx->mv_bits = s->m.mv_bits;
1867 avctx->misc_bits = s->m.misc_bits;
1868 avctx->p_tex_bits = s->m.p_tex_bits;
1872 ff_side_data_set_encoder_stats(pkt, s->current_picture->quality,
1874 (s->avctx->flags&AV_CODEC_FLAG_PSNR) ? 4 : 0,
1875 s->current_picture->pict_type);
1877 #if FF_API_ERROR_FRAME
1878 FF_DISABLE_DEPRECATION_WARNINGS
1879 memcpy(s->current_picture->error, s->encoding_error, sizeof(s->encoding_error));
1880 FF_ENABLE_DEPRECATION_WARNINGS
1883 pkt->size = ff_rac_terminate(c);
1884 if (s->current_picture->key_frame)
1885 pkt->flags |= AV_PKT_FLAG_KEY;
1891 static av_cold int encode_end(AVCodecContext *avctx)
1893 SnowContext *s = avctx->priv_data;
1895 ff_snow_common_end(s);
1896 ff_rate_control_uninit(&s->m);
1897 av_frame_free(&s->input_picture);
1898 av_freep(&avctx->stats_out);
1903 #define OFFSET(x) offsetof(SnowContext, x)
1904 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1905 static const AVOption options[] = {
1907 { "iter", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ITER }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" },
1908 { "memc_only", "Only do ME/MC (I frames -> ref, P frame -> ME+MC).", OFFSET(memc_only), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1909 { "no_bitstream", "Skip final bitstream writeout.", OFFSET(no_bitstream), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1910 { "intra_penalty", "Penalty for intra blocks in block decission", OFFSET(intra_penalty), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1911 { "iterative_dia_size", "Dia size for the iterative ME", OFFSET(iterative_dia_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1915 static const AVClass snowenc_class = {
1916 .class_name = "snow encoder",
1917 .item_name = av_default_item_name,
1919 .version = LIBAVUTIL_VERSION_INT,
1922 AVCodec ff_snow_encoder = {
1924 .long_name = NULL_IF_CONFIG_SMALL("Snow"),
1925 .type = AVMEDIA_TYPE_VIDEO,
1926 .id = AV_CODEC_ID_SNOW,
1927 .priv_data_size = sizeof(SnowContext),
1928 .init = encode_init,
1929 .encode2 = encode_frame,
1930 .close = encode_end,
1931 .pix_fmts = (const enum AVPixelFormat[]){
1932 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV444P,
1936 .priv_class = &snowenc_class,
1937 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
1938 FF_CODEC_CAP_INIT_CLEANUP,
1947 #include "libavutil/lfg.h"
1948 #include "libavutil/mathematics.h"
1953 int buffer[2][width*height];
1957 s.spatial_decomposition_count=6;
1958 s.spatial_decomposition_type=1;
1960 s.temp_dwt_buffer = av_mallocz_array(width, sizeof(DWTELEM));
1961 s.temp_idwt_buffer = av_mallocz_array(width, sizeof(IDWTELEM));
1963 if (!s.temp_dwt_buffer || !s.temp_idwt_buffer) {
1964 fprintf(stderr, "Failed to allocate memory\n");
1968 av_lfg_init(&prng, 1);
1970 printf("testing 5/3 DWT\n");
1971 for(i=0; i<width*height; i++)
1972 buffer[0][i] = buffer[1][i] = av_lfg_get(&prng) % 54321 - 12345;
1974 ff_spatial_dwt(buffer[0], s.temp_dwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
1975 ff_spatial_idwt((IDWTELEM*)buffer[0], s.temp_idwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
1977 for(i=0; i<width*height; i++)
1978 if(buffer[0][i]!= buffer[1][i]) printf("fsck: %6d %12d %7d\n",i, buffer[0][i], buffer[1][i]);
1980 printf("testing 9/7 DWT\n");
1981 s.spatial_decomposition_type=0;
1982 for(i=0; i<width*height; i++)
1983 buffer[0][i] = buffer[1][i] = av_lfg_get(&prng) % 54321 - 12345;
1985 ff_spatial_dwt(buffer[0], s.temp_dwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
1986 ff_spatial_idwt((IDWTELEM*)buffer[0], s.temp_idwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
1988 for(i=0; i<width*height; i++)
1989 if(FFABS(buffer[0][i] - buffer[1][i])>20) printf("fsck: %6d %12d %7d\n",i, buffer[0][i], buffer[1][i]);
1992 int level, orientation, x, y;
1993 int64_t errors[8][4];
1996 memset(errors, 0, sizeof(errors));
1997 s.spatial_decomposition_count=3;
1998 s.spatial_decomposition_type=0;
1999 for(level=0; level<s.spatial_decomposition_count; level++){
2000 for(orientation=level ? 1 : 0; orientation<4; orientation++){
2001 int w= width >> (s.spatial_decomposition_count-level);
2002 int h= height >> (s.spatial_decomposition_count-level);
2003 int stride= width << (s.spatial_decomposition_count-level);
2004 DWTELEM *buf= buffer[0];
2007 if(orientation&1) buf+=w;
2008 if(orientation>1) buf+=stride>>1;
2010 memset(buffer[0], 0, sizeof(int)*width*height);
2011 buf[w/2 + h/2*stride]= 256*256;
2012 ff_spatial_idwt((IDWTELEM*)buffer[0], s.temp_idwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
2013 for(y=0; y<height; y++){
2014 for(x=0; x<width; x++){
2015 int64_t d= buffer[0][x + y*width];
2017 if(FFABS(width/2-x)<9 && FFABS(height/2-y)<9 && level==2) printf("%8"PRId64" ", d);
2019 if(FFABS(height/2-y)<9 && level==2) printf("\n");
2021 error= (int)(sqrt(error)+0.5);
2022 errors[level][orientation]= error;
2023 if(g) g=av_gcd(g, error);
2027 printf("static int const visual_weight[][4]={\n");
2028 for(level=0; level<s.spatial_decomposition_count; level++){
2030 for(orientation=0; orientation<4; orientation++){
2031 printf("%8"PRId64",", errors[level][orientation]/g);
2038 int w= width >> (s.spatial_decomposition_count-level);
2039 //int h= height >> (s.spatial_decomposition_count-level);
2040 int stride= width << (s.spatial_decomposition_count-level);
2041 DWTELEM *buf= buffer[0];
2047 memset(buffer[0], 0, sizeof(int)*width*height);
2048 for(y=0; y<height; y++){
2049 for(x=0; x<width; x++){
2050 int tab[4]={0,2,3,1};
2051 buffer[0][x+width*y]= 256*256*tab[(x&1) + 2*(y&1)];
2054 ff_spatial_dwt(buffer[0], s.temp_dwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
2055 for(y=0; y<height; y++){
2056 for(x=0; x<width; x++){
2057 int64_t d= buffer[0][x + y*width];
2059 if(FFABS(width/2-x)<9 && FFABS(height/2-y)<9) printf("%8"PRId64" ", d);
2061 if(FFABS(height/2-y)<9) printf("\n");