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"
25 #include "libavutil/pixdesc.h"
28 #include "packet_internal.h"
32 #include "rangecoder.h"
35 #include "mpegvideo.h"
38 static av_cold int encode_init(AVCodecContext *avctx)
40 SnowContext *s = avctx->priv_data;
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");
48 return AVERROR(EINVAL);
51 s->spatial_decomposition_type= s->pred; //FIXME add decorrelator type r transform_type
53 s->mv_scale = (avctx->flags & AV_CODEC_FLAG_QPEL) ? 2 : 4;
54 s->block_max_depth= (avctx->flags & AV_CODEC_FLAG_4MV ) ? 1 : 0;
56 for(plane_index=0; plane_index<3; plane_index++){
57 s->plane[plane_index].diag_mc= 1;
58 s->plane[plane_index].htaps= 6;
59 s->plane[plane_index].hcoeff[0]= 40;
60 s->plane[plane_index].hcoeff[1]= -10;
61 s->plane[plane_index].hcoeff[2]= 2;
62 s->plane[plane_index].fast_mc= 1;
65 if ((ret = ff_snow_common_init(avctx)) < 0) {
68 ff_mpegvideoencdsp_init(&s->mpvencdsp, avctx);
70 ff_snow_alloc_blocks(s);
75 s->m.bit_rate= avctx->bit_rate;
76 s->m.lmin = avctx->mb_lmin;
77 s->m.lmax = avctx->mb_lmax;
78 s->m.mb_num = (avctx->width * avctx->height + 255) / 256; // For ratecontrol
81 s->m.me.scratchpad= av_mallocz_array((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.sc.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.sc.obmc_scratchpad)
86 return AVERROR(ENOMEM);
88 ff_h263_encode_init(&s->m); //mv_penalty
90 s->max_ref_frames = av_clip(avctx->refs, 1, MAX_REF_FRAMES);
92 if(avctx->flags&AV_CODEC_FLAG_PASS1){
94 avctx->stats_out = av_mallocz(256);
96 if (!avctx->stats_out)
97 return AVERROR(ENOMEM);
99 if((avctx->flags&AV_CODEC_FLAG_PASS2) || !(avctx->flags&AV_CODEC_FLAG_QSCALE)){
100 ret = ff_rate_control_init(&s->m);
104 s->pass1_rc= !(avctx->flags & (AV_CODEC_FLAG_QSCALE|AV_CODEC_FLAG_PASS2));
106 switch(avctx->pix_fmt){
107 case AV_PIX_FMT_YUV444P:
108 // case AV_PIX_FMT_YUV422P:
109 case AV_PIX_FMT_YUV420P:
110 // case AV_PIX_FMT_YUV411P:
111 case AV_PIX_FMT_YUV410P:
113 s->colorspace_type= 0;
115 case AV_PIX_FMT_GRAY8:
117 s->colorspace_type = 1;
119 /* case AV_PIX_FMT_RGB32:
123 av_log(avctx, AV_LOG_ERROR, "pixel format not supported\n");
124 return AVERROR_PATCHWELCOME;
127 ret = av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift,
130 av_log(avctx, AV_LOG_ERROR, "pixel format invalid or unknown\n");
134 ff_set_cmp(&s->mecc, s->mecc.me_cmp, s->avctx->me_cmp);
135 ff_set_cmp(&s->mecc, s->mecc.me_sub_cmp, s->avctx->me_sub_cmp);
137 s->input_picture = av_frame_alloc();
138 if (!s->input_picture)
139 return AVERROR(ENOMEM);
141 if ((ret = ff_snow_get_buffer(s, s->input_picture)) < 0)
144 if(s->motion_est == FF_ME_ITER){
145 int size= s->b_width * s->b_height << 2*s->block_max_depth;
146 for(i=0; i<s->max_ref_frames; i++){
147 s->ref_mvs[i]= av_mallocz_array(size, sizeof(int16_t[2]));
148 s->ref_scores[i]= av_mallocz_array(size, sizeof(uint32_t));
149 if (!s->ref_mvs[i] || !s->ref_scores[i])
150 return AVERROR(ENOMEM);
157 //near copy & paste from dsputil, FIXME
158 static int pix_sum(uint8_t * pix, int line_size, int w, int h)
163 for (i = 0; i < h; i++) {
164 for (j = 0; j < w; j++) {
168 pix += line_size - w;
173 //near copy & paste from dsputil, FIXME
174 static int pix_norm1(uint8_t * pix, int line_size, int w)
177 const uint32_t *sq = ff_square_tab + 256;
180 for (i = 0; i < w; i++) {
181 for (j = 0; j < w; j ++) {
185 pix += line_size - w;
190 static inline int get_penalty_factor(int lambda, int lambda2, int type){
194 return lambda>>FF_LAMBDA_SHIFT;
196 return (3*lambda)>>(FF_LAMBDA_SHIFT+1);
198 return (4*lambda)>>(FF_LAMBDA_SHIFT);
200 return (2*lambda)>>(FF_LAMBDA_SHIFT);
203 return (2*lambda)>>FF_LAMBDA_SHIFT;
208 return lambda2>>FF_LAMBDA_SHIFT;
217 #define P_TOPRIGHT P[3]
218 #define P_MEDIAN P[4]
220 #define FLAG_QPEL 1 //must be 1
222 static int encode_q_branch(SnowContext *s, int level, int x, int y){
223 uint8_t p_buffer[1024];
224 uint8_t i_buffer[1024];
225 uint8_t p_state[sizeof(s->block_state)];
226 uint8_t i_state[sizeof(s->block_state)];
228 uint8_t *pbbak= s->c.bytestream;
229 uint8_t *pbbak_start= s->c.bytestream_start;
230 int score, score2, iscore, i_len, p_len, block_s, sum, base_bits;
231 const int w= s->b_width << s->block_max_depth;
232 const int h= s->b_height << s->block_max_depth;
233 const int rem_depth= s->block_max_depth - level;
234 const int index= (x + y*w) << rem_depth;
235 const int block_w= 1<<(LOG2_MB_SIZE - level);
236 int trx= (x+1)<<rem_depth;
237 int try= (y+1)<<rem_depth;
238 const BlockNode *left = x ? &s->block[index-1] : &null_block;
239 const BlockNode *top = y ? &s->block[index-w] : &null_block;
240 const BlockNode *right = trx<w ? &s->block[index+1] : &null_block;
241 const BlockNode *bottom= try<h ? &s->block[index+w] : &null_block;
242 const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
243 const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
244 int pl = left->color[0];
245 int pcb= left->color[1];
246 int pcr= left->color[2];
250 const int stride= s->current_picture->linesize[0];
251 const int uvstride= s->current_picture->linesize[1];
252 uint8_t *current_data[3]= { s->input_picture->data[0] + (x + y* stride)*block_w,
253 s->input_picture->data[1] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift),
254 s->input_picture->data[2] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift)};
256 int16_t last_mv[3][2];
257 int qpel= !!(s->avctx->flags & AV_CODEC_FLAG_QPEL); //unused
258 const int shift= 1+qpel;
259 MotionEstContext *c= &s->m.me;
260 int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
261 int mx_context= av_log2(2*FFABS(left->mx - top->mx));
262 int my_context= av_log2(2*FFABS(left->my - top->my));
263 int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
264 int ref, best_ref, ref_score, ref_mx, ref_my;
266 av_assert0(sizeof(s->block_state) >= 256);
268 set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
272 // clip predictors / edge ?
278 P_TOPRIGHT[0]= tr->mx;
279 P_TOPRIGHT[1]= tr->my;
281 last_mv[0][0]= s->block[index].mx;
282 last_mv[0][1]= s->block[index].my;
283 last_mv[1][0]= right->mx;
284 last_mv[1][1]= right->my;
285 last_mv[2][0]= bottom->mx;
286 last_mv[2][1]= bottom->my;
293 av_assert1(c-> stride == stride);
294 av_assert1(c->uvstride == uvstride);
296 c->penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_cmp);
297 c->sub_penalty_factor= get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_sub_cmp);
298 c->mb_penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->mb_cmp);
299 c->current_mv_penalty= c->mv_penalty[s->m.f_code=1] + MAX_DMV;
301 c->xmin = - x*block_w - 16+3;
302 c->ymin = - y*block_w - 16+3;
303 c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
304 c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
306 if(P_LEFT[0] > (c->xmax<<shift)) P_LEFT[0] = (c->xmax<<shift);
307 if(P_LEFT[1] > (c->ymax<<shift)) P_LEFT[1] = (c->ymax<<shift);
308 if(P_TOP[0] > (c->xmax<<shift)) P_TOP[0] = (c->xmax<<shift);
309 if(P_TOP[1] > (c->ymax<<shift)) P_TOP[1] = (c->ymax<<shift);
310 if(P_TOPRIGHT[0] < (c->xmin * (1<<shift))) P_TOPRIGHT[0]= (c->xmin * (1<<shift));
311 if(P_TOPRIGHT[0] > (c->xmax<<shift)) P_TOPRIGHT[0]= (c->xmax<<shift); //due to pmx no clip
312 if(P_TOPRIGHT[1] > (c->ymax<<shift)) P_TOPRIGHT[1]= (c->ymax<<shift);
314 P_MEDIAN[0]= mid_pred(P_LEFT[0], P_TOP[0], P_TOPRIGHT[0]);
315 P_MEDIAN[1]= mid_pred(P_LEFT[1], P_TOP[1], P_TOPRIGHT[1]);
318 c->pred_x= P_LEFT[0];
319 c->pred_y= P_LEFT[1];
321 c->pred_x = P_MEDIAN[0];
322 c->pred_y = P_MEDIAN[1];
327 for(ref=0; ref<s->ref_frames; ref++){
328 init_ref(c, current_data, s->last_picture[ref]->data, NULL, block_w*x, block_w*y, 0);
330 ref_score= ff_epzs_motion_search(&s->m, &ref_mx, &ref_my, P, 0, /*ref_index*/ 0, last_mv,
331 (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w);
333 av_assert2(ref_mx >= c->xmin);
334 av_assert2(ref_mx <= c->xmax);
335 av_assert2(ref_my >= c->ymin);
336 av_assert2(ref_my <= c->ymax);
338 ref_score= c->sub_motion_search(&s->m, &ref_mx, &ref_my, ref_score, 0, 0, level-LOG2_MB_SIZE+4, block_w);
339 ref_score= ff_get_mb_score(&s->m, ref_mx, ref_my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0);
340 ref_score+= 2*av_log2(2*ref)*c->penalty_factor;
342 s->ref_mvs[ref][index][0]= ref_mx;
343 s->ref_mvs[ref][index][1]= ref_my;
344 s->ref_scores[ref][index]= ref_score;
346 if(score > ref_score){
353 //FIXME if mb_cmp != SSE then intra cannot be compared currently and mb_penalty vs. lambda2
356 base_bits= get_rac_count(&s->c) - 8*(s->c.bytestream - s->c.bytestream_start);
359 pc.bytestream= p_buffer; //FIXME end/start? and at the other stoo
360 memcpy(p_state, s->block_state, sizeof(s->block_state));
362 if(level!=s->block_max_depth)
363 put_rac(&pc, &p_state[4 + s_context], 1);
364 put_rac(&pc, &p_state[1 + left->type + top->type], 0);
365 if(s->ref_frames > 1)
366 put_symbol(&pc, &p_state[128 + 1024 + 32*ref_context], best_ref, 0);
367 pred_mv(s, &pmx, &pmy, best_ref, left, top, tr);
368 put_symbol(&pc, &p_state[128 + 32*(mx_context + 16*!!best_ref)], mx - pmx, 1);
369 put_symbol(&pc, &p_state[128 + 32*(my_context + 16*!!best_ref)], my - pmy, 1);
370 p_len= pc.bytestream - pc.bytestream_start;
371 score += (s->lambda2*(get_rac_count(&pc)-base_bits))>>FF_LAMBDA_SHIFT;
373 block_s= block_w*block_w;
374 sum = pix_sum(current_data[0], stride, block_w, block_w);
375 l= (sum + block_s/2)/block_s;
376 iscore = pix_norm1(current_data[0], stride, block_w) - 2*l*sum + l*l*block_s;
378 if (s->nb_planes > 2) {
379 block_s= block_w*block_w>>(s->chroma_h_shift + s->chroma_v_shift);
380 sum = pix_sum(current_data[1], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
381 cb= (sum + block_s/2)/block_s;
382 // iscore += pix_norm1(¤t_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s;
383 sum = pix_sum(current_data[2], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
384 cr= (sum + block_s/2)/block_s;
385 // iscore += pix_norm1(¤t_mb[2][0], uvstride, block_w>>1) - 2*cr*sum + cr*cr*block_s;
391 ic.bytestream= i_buffer; //FIXME end/start? and at the other stoo
392 memcpy(i_state, s->block_state, sizeof(s->block_state));
393 if(level!=s->block_max_depth)
394 put_rac(&ic, &i_state[4 + s_context], 1);
395 put_rac(&ic, &i_state[1 + left->type + top->type], 1);
396 put_symbol(&ic, &i_state[32], l-pl , 1);
397 if (s->nb_planes > 2) {
398 put_symbol(&ic, &i_state[64], cb-pcb, 1);
399 put_symbol(&ic, &i_state[96], cr-pcr, 1);
401 i_len= ic.bytestream - ic.bytestream_start;
402 iscore += (s->lambda2*(get_rac_count(&ic)-base_bits))>>FF_LAMBDA_SHIFT;
404 av_assert1(iscore < 255*255*256 + s->lambda2*10);
405 av_assert1(iscore >= 0);
406 av_assert1(l>=0 && l<=255);
407 av_assert1(pl>=0 && pl<=255);
410 int varc= iscore >> 8;
411 int vard= score >> 8;
412 if (vard <= 64 || vard < varc)
413 c->scene_change_score+= ff_sqrt(vard) - ff_sqrt(varc);
415 c->scene_change_score+= s->m.qscale;
418 if(level!=s->block_max_depth){
419 put_rac(&s->c, &s->block_state[4 + s_context], 0);
420 score2 = encode_q_branch(s, level+1, 2*x+0, 2*y+0);
421 score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+0);
422 score2+= encode_q_branch(s, level+1, 2*x+0, 2*y+1);
423 score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+1);
424 score2+= s->lambda2>>FF_LAMBDA_SHIFT; //FIXME exact split overhead
426 if(score2 < score && score2 < iscore)
431 pred_mv(s, &pmx, &pmy, 0, left, top, tr);
432 memcpy(pbbak, i_buffer, i_len);
434 s->c.bytestream_start= pbbak_start;
435 s->c.bytestream= pbbak + i_len;
436 set_blocks(s, level, x, y, l, cb, cr, pmx, pmy, 0, BLOCK_INTRA);
437 memcpy(s->block_state, i_state, sizeof(s->block_state));
440 memcpy(pbbak, p_buffer, p_len);
442 s->c.bytestream_start= pbbak_start;
443 s->c.bytestream= pbbak + p_len;
444 set_blocks(s, level, x, y, pl, pcb, pcr, mx, my, best_ref, 0);
445 memcpy(s->block_state, p_state, sizeof(s->block_state));
450 static void encode_q_branch2(SnowContext *s, int level, int x, int y){
451 const int w= s->b_width << s->block_max_depth;
452 const int rem_depth= s->block_max_depth - level;
453 const int index= (x + y*w) << rem_depth;
454 int trx= (x+1)<<rem_depth;
455 BlockNode *b= &s->block[index];
456 const BlockNode *left = x ? &s->block[index-1] : &null_block;
457 const BlockNode *top = y ? &s->block[index-w] : &null_block;
458 const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
459 const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
460 int pl = left->color[0];
461 int pcb= left->color[1];
462 int pcr= left->color[2];
464 int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
465 int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 16*!!b->ref;
466 int my_context= av_log2(2*FFABS(left->my - top->my)) + 16*!!b->ref;
467 int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
470 set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
474 if(level!=s->block_max_depth){
475 if(same_block(b,b+1) && same_block(b,b+w) && same_block(b,b+w+1)){
476 put_rac(&s->c, &s->block_state[4 + s_context], 1);
478 put_rac(&s->c, &s->block_state[4 + s_context], 0);
479 encode_q_branch2(s, level+1, 2*x+0, 2*y+0);
480 encode_q_branch2(s, level+1, 2*x+1, 2*y+0);
481 encode_q_branch2(s, level+1, 2*x+0, 2*y+1);
482 encode_q_branch2(s, level+1, 2*x+1, 2*y+1);
486 if(b->type & BLOCK_INTRA){
487 pred_mv(s, &pmx, &pmy, 0, left, top, tr);
488 put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 1);
489 put_symbol(&s->c, &s->block_state[32], b->color[0]-pl , 1);
490 if (s->nb_planes > 2) {
491 put_symbol(&s->c, &s->block_state[64], b->color[1]-pcb, 1);
492 put_symbol(&s->c, &s->block_state[96], b->color[2]-pcr, 1);
494 set_blocks(s, level, x, y, b->color[0], b->color[1], b->color[2], pmx, pmy, 0, BLOCK_INTRA);
496 pred_mv(s, &pmx, &pmy, b->ref, left, top, tr);
497 put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 0);
498 if(s->ref_frames > 1)
499 put_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], b->ref, 0);
500 put_symbol(&s->c, &s->block_state[128 + 32*mx_context], b->mx - pmx, 1);
501 put_symbol(&s->c, &s->block_state[128 + 32*my_context], b->my - pmy, 1);
502 set_blocks(s, level, x, y, pl, pcb, pcr, b->mx, b->my, b->ref, 0);
506 static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){
508 Plane *p= &s->plane[plane_index];
509 const int block_size = MB_SIZE >> s->block_max_depth;
510 const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
511 const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
512 const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
513 const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
514 const int ref_stride= s->current_picture->linesize[plane_index];
515 uint8_t *src= s-> input_picture->data[plane_index];
516 IDWTELEM *dst= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4; //FIXME change to unsigned
517 const int b_stride = s->b_width << s->block_max_depth;
518 const int w= p->width;
519 const int h= p->height;
520 int index= mb_x + mb_y*b_stride;
521 BlockNode *b= &s->block[index];
522 BlockNode backup= *b;
526 av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc stuff above
528 b->type|= BLOCK_INTRA;
529 b->color[plane_index]= 0;
530 memset(dst, 0, obmc_stride*obmc_stride*sizeof(IDWTELEM));
533 int mb_x2= mb_x + (i &1) - 1;
534 int mb_y2= mb_y + (i>>1) - 1;
535 int x= block_w*mb_x2 + block_w/2;
536 int y= block_h*mb_y2 + block_h/2;
538 add_yblock(s, 0, NULL, dst + (i&1)*block_w + (i>>1)*obmc_stride*block_h, NULL, obmc,
539 x, y, block_w, block_h, w, h, obmc_stride, ref_stride, obmc_stride, mb_x2, mb_y2, 0, 0, plane_index);
541 for(y2= FFMAX(y, 0); y2<FFMIN(h, y+block_h); y2++){
542 for(x2= FFMAX(x, 0); x2<FFMIN(w, x+block_w); x2++){
543 int index= x2-(block_w*mb_x - block_w/2) + (y2-(block_h*mb_y - block_h/2))*obmc_stride;
544 int obmc_v= obmc[index];
546 if(y<0) obmc_v += obmc[index + block_h*obmc_stride];
547 if(x<0) obmc_v += obmc[index + block_w];
548 if(y+block_h>h) obmc_v += obmc[index - block_h*obmc_stride];
549 if(x+block_w>w) obmc_v += obmc[index - block_w];
550 //FIXME precalculate this or simplify it somehow else
552 d = -dst[index] + (1<<(FRAC_BITS-1));
554 ab += (src[x2 + y2*ref_stride] - (d>>FRAC_BITS)) * obmc_v;
555 aa += obmc_v * obmc_v; //FIXME precalculate this
561 return av_clip_uint8( ROUNDED_DIV(ab<<LOG2_OBMC_MAX, aa) ); //FIXME we should not need clipping
564 static inline int get_block_bits(SnowContext *s, int x, int y, int w){
565 const int b_stride = s->b_width << s->block_max_depth;
566 const int b_height = s->b_height<< s->block_max_depth;
567 int index= x + y*b_stride;
568 const BlockNode *b = &s->block[index];
569 const BlockNode *left = x ? &s->block[index-1] : &null_block;
570 const BlockNode *top = y ? &s->block[index-b_stride] : &null_block;
571 const BlockNode *tl = y && x ? &s->block[index-b_stride-1] : left;
572 const BlockNode *tr = y && x+w<b_stride ? &s->block[index-b_stride+w] : tl;
574 // int mx_context= av_log2(2*FFABS(left->mx - top->mx));
575 // int my_context= av_log2(2*FFABS(left->my - top->my));
577 if(x<0 || x>=b_stride || y>=b_height)
586 //FIXME try accurate rate
587 //FIXME intra and inter predictors if surrounding blocks are not the same type
588 if(b->type & BLOCK_INTRA){
589 return 3+2*( av_log2(2*FFABS(left->color[0] - b->color[0]))
590 + av_log2(2*FFABS(left->color[1] - b->color[1]))
591 + av_log2(2*FFABS(left->color[2] - b->color[2])));
593 pred_mv(s, &dmx, &dmy, b->ref, left, top, tr);
596 return 2*(1 + av_log2(2*FFABS(dmx)) //FIXME kill the 2* can be merged in lambda
597 + av_log2(2*FFABS(dmy))
598 + av_log2(2*b->ref));
602 static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, uint8_t (*obmc_edged)[MB_SIZE * 2]){
603 Plane *p= &s->plane[plane_index];
604 const int block_size = MB_SIZE >> s->block_max_depth;
605 const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
606 const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
607 const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
608 const int ref_stride= s->current_picture->linesize[plane_index];
609 uint8_t *dst= s->current_picture->data[plane_index];
610 uint8_t *src= s-> input_picture->data[plane_index];
611 IDWTELEM *pred= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4;
612 uint8_t *cur = s->scratchbuf;
613 uint8_t *tmp = s->emu_edge_buffer;
614 const int b_stride = s->b_width << s->block_max_depth;
615 const int b_height = s->b_height<< s->block_max_depth;
616 const int w= p->width;
617 const int h= p->height;
620 const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
621 int sx= block_w*mb_x - block_w/2;
622 int sy= block_h*mb_y - block_h/2;
623 int x0= FFMAX(0,-sx);
624 int y0= FFMAX(0,-sy);
625 int x1= FFMIN(block_w*2, w-sx);
626 int y1= FFMIN(block_h*2, h-sy);
629 av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below chckinhg only block_w
631 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);
633 for(y=y0; y<y1; y++){
634 const uint8_t *obmc1= obmc_edged[y];
635 const IDWTELEM *pred1 = pred + y*obmc_stride;
636 uint8_t *cur1 = cur + y*ref_stride;
637 uint8_t *dst1 = dst + sx + (sy+y)*ref_stride;
638 for(x=x0; x<x1; x++){
639 #if FRAC_BITS >= LOG2_OBMC_MAX
640 int v = (cur1[x] * obmc1[x]) << (FRAC_BITS - LOG2_OBMC_MAX);
642 int v = (cur1[x] * obmc1[x] + (1<<(LOG2_OBMC_MAX - FRAC_BITS-1))) >> (LOG2_OBMC_MAX - FRAC_BITS);
644 v = (v + pred1[x]) >> FRAC_BITS;
645 if(v&(~255)) v= ~(v>>31);
650 /* copy the regions where obmc[] = (uint8_t)256 */
651 if(LOG2_OBMC_MAX == 8
652 && (mb_x == 0 || mb_x == b_stride-1)
653 && (mb_y == 0 || mb_y == b_height-1)){
663 memcpy(dst + sx+x0 + (sy+y)*ref_stride, cur + x0 + y*ref_stride, x1-x0);
667 /* FIXME rearrange dsputil to fit 32x32 cmp functions */
668 /* FIXME check alignment of the cmp wavelet vs the encoding wavelet */
669 /* FIXME cmps overlap but do not cover the wavelet's whole support.
670 * So improving the score of one block is not strictly guaranteed
671 * to improve the score of the whole frame, thus iterative motion
672 * estimation does not always converge. */
673 if(s->avctx->me_cmp == FF_CMP_W97)
674 distortion = ff_w97_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
675 else if(s->avctx->me_cmp == FF_CMP_W53)
676 distortion = ff_w53_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
680 int off = sx+16*(i&1) + (sy+16*(i>>1))*ref_stride;
681 distortion += s->mecc.me_cmp[0](&s->m, src + off, dst + off, ref_stride, 16);
685 av_assert2(block_w==8);
686 distortion = s->mecc.me_cmp[0](&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, block_w*2);
695 rate += get_block_bits(s, mb_x + (i&1) - (i>>1), mb_y + (i>>1), 1);
697 if(mb_x == b_stride-2)
698 rate += get_block_bits(s, mb_x + 1, mb_y + 1, 1);
700 return distortion + rate*penalty_factor;
703 static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){
705 Plane *p= &s->plane[plane_index];
706 const int block_size = MB_SIZE >> s->block_max_depth;
707 const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
708 const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
709 const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
710 const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
711 const int ref_stride= s->current_picture->linesize[plane_index];
712 uint8_t *dst= s->current_picture->data[plane_index];
713 uint8_t *src= s-> input_picture->data[plane_index];
714 //FIXME zero_dst is const but add_yblock changes dst if add is 0 (this is never the case for dst=zero_dst
715 // const has only been removed from zero_dst to suppress a warning
716 static IDWTELEM zero_dst[4096]; //FIXME
717 const int b_stride = s->b_width << s->block_max_depth;
718 const int w= p->width;
719 const int h= p->height;
722 const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
724 av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below
727 int mb_x2= mb_x + (i%3) - 1;
728 int mb_y2= mb_y + (i/3) - 1;
729 int x= block_w*mb_x2 + block_w/2;
730 int y= block_h*mb_y2 + block_h/2;
732 add_yblock(s, 0, NULL, zero_dst, dst, obmc,
733 x, y, block_w, block_h, w, h, /*dst_stride*/0, ref_stride, obmc_stride, mb_x2, mb_y2, 1, 1, plane_index);
735 //FIXME find a cleaner/simpler way to skip the outside stuff
736 for(y2= y; y2<0; y2++)
737 memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
738 for(y2= h; y2<y+block_h; y2++)
739 memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
741 for(y2= y; y2<y+block_h; y2++)
742 memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, -x);
745 for(y2= y; y2<y+block_h; y2++)
746 memcpy(dst + w + y2*ref_stride, src + w + y2*ref_stride, x+block_w - w);
749 av_assert1(block_w== 8 || block_w==16);
750 distortion += s->mecc.me_cmp[block_w==8](&s->m, src + x + y*ref_stride, dst + x + y*ref_stride, ref_stride, block_h);
754 BlockNode *b= &s->block[mb_x+mb_y*b_stride];
755 int merged= same_block(b,b+1) && same_block(b,b+b_stride) && same_block(b,b+b_stride+1);
763 rate = get_block_bits(s, mb_x, mb_y, 2);
764 for(i=merged?4:0; i<9; i++){
765 static const int dxy[9][2] = {{0,0},{1,0},{0,1},{1,1},{2,0},{2,1},{-1,2},{0,2},{1,2}};
766 rate += get_block_bits(s, mb_x + dxy[i][0], mb_y + dxy[i][1], 1);
769 return distortion + rate*penalty_factor;
772 static int encode_subband_c0run(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
773 const int w= b->width;
774 const int h= b->height;
779 int *runs = s->run_buffer;
786 int /*ll=0, */l=0, lt=0, t=0, rt=0;
787 v= src[x + y*stride];
790 t= src[x + (y-1)*stride];
792 lt= src[x - 1 + (y-1)*stride];
795 rt= src[x + 1 + (y-1)*stride];
799 l= src[x - 1 + y*stride];
801 if(orientation==1) ll= src[y + (x-2)*stride];
802 else ll= src[x - 2 + y*stride];
808 if(px<b->parent->width && py<b->parent->height)
809 p= parent[px + py*2*stride];
811 if(!(/*ll|*/l|lt|t|rt|p)){
813 runs[run_index++]= run;
821 max_index= run_index;
822 runs[run_index++]= run;
824 run= runs[run_index++];
826 put_symbol2(&s->c, b->state[30], max_index, 0);
827 if(run_index <= max_index)
828 put_symbol2(&s->c, b->state[1], run, 3);
831 if(s->c.bytestream_end - s->c.bytestream < w*40){
832 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
833 return AVERROR(ENOMEM);
837 int /*ll=0, */l=0, lt=0, t=0, rt=0;
838 v= src[x + y*stride];
841 t= src[x + (y-1)*stride];
843 lt= src[x - 1 + (y-1)*stride];
846 rt= src[x + 1 + (y-1)*stride];
850 l= src[x - 1 + y*stride];
852 if(orientation==1) ll= src[y + (x-2)*stride];
853 else ll= src[x - 2 + y*stride];
859 if(px<b->parent->width && py<b->parent->height)
860 p= parent[px + py*2*stride];
862 if(/*ll|*/l|lt|t|rt|p){
863 int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
865 put_rac(&s->c, &b->state[0][context], !!v);
868 run= runs[run_index++];
870 if(run_index <= max_index)
871 put_symbol2(&s->c, b->state[1], run, 3);
879 int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
880 int l2= 2*FFABS(l) + (l<0);
881 int t2= 2*FFABS(t) + (t<0);
883 put_symbol2(&s->c, b->state[context + 2], FFABS(v)-1, context-4);
884 put_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l2&0xFF] + 3*ff_quant3bA[t2&0xFF]], v<0);
892 static int encode_subband(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
893 // encode_subband_qtree(s, b, src, parent, stride, orientation);
894 // encode_subband_z0run(s, b, src, parent, stride, orientation);
895 return encode_subband_c0run(s, b, src, parent, stride, orientation);
896 // encode_subband_dzr(s, b, src, parent, stride, orientation);
899 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){
900 const int b_stride= s->b_width << s->block_max_depth;
901 BlockNode *block= &s->block[mb_x + mb_y * b_stride];
902 BlockNode backup= *block;
906 av_assert2(mb_x>=0 && mb_y>=0);
907 av_assert2(mb_x<b_stride);
910 block->color[0] = p[0];
911 block->color[1] = p[1];
912 block->color[2] = p[2];
913 block->type |= BLOCK_INTRA;
915 index= (p[0] + 31*p[1]) & (ME_CACHE_SIZE-1);
916 value= s->me_cache_generation + (p[0]>>10) + (p[1]<<6) + (block->ref<<12);
917 if(s->me_cache[index] == value)
919 s->me_cache[index]= value;
923 block->type &= ~BLOCK_INTRA;
926 rd= get_block_rd(s, mb_x, mb_y, 0, obmc_edged) + s->intra_penalty * !!intra;
938 /* special case for int[2] args we discard afterwards,
939 * fixes compilation problem with gcc 2.95 */
940 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){
942 return check_block(s, mb_x, mb_y, p, 0, obmc_edged, best_rd);
945 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){
946 const int b_stride= s->b_width << s->block_max_depth;
947 BlockNode *block= &s->block[mb_x + mb_y * b_stride];
952 /* We don't initialize backup[] during variable declaration, because
953 * that fails to compile on MSVC: "cannot convert from 'BlockNode' to
955 backup[0] = block[0];
956 backup[1] = block[1];
957 backup[2] = block[b_stride];
958 backup[3] = block[b_stride + 1];
960 av_assert2(mb_x>=0 && mb_y>=0);
961 av_assert2(mb_x<b_stride);
962 av_assert2(((mb_x|mb_y)&1) == 0);
964 index= (p0 + 31*p1) & (ME_CACHE_SIZE-1);
965 value= s->me_cache_generation + (p0>>10) + (p1<<6) + (block->ref<<12);
966 if(s->me_cache[index] == value)
968 s->me_cache[index]= value;
973 block->type &= ~BLOCK_INTRA;
974 block[1]= block[b_stride]= block[b_stride+1]= *block;
976 rd= get_4block_rd(s, mb_x, mb_y, 0);
985 block[b_stride]= backup[2];
986 block[b_stride+1]= backup[3];
991 static void iterative_me(SnowContext *s){
992 int pass, mb_x, mb_y;
993 const int b_width = s->b_width << s->block_max_depth;
994 const int b_height= s->b_height << s->block_max_depth;
995 const int b_stride= b_width;
1000 uint8_t state[sizeof(s->block_state)];
1001 memcpy(state, s->block_state, sizeof(s->block_state));
1002 for(mb_y= 0; mb_y<s->b_height; mb_y++)
1003 for(mb_x= 0; mb_x<s->b_width; mb_x++)
1004 encode_q_branch(s, 0, mb_x, mb_y);
1006 memcpy(s->block_state, state, sizeof(s->block_state));
1009 for(pass=0; pass<25; pass++){
1012 for(mb_y= 0; mb_y<b_height; mb_y++){
1013 for(mb_x= 0; mb_x<b_width; mb_x++){
1014 int dia_change, i, j, ref;
1015 int best_rd= INT_MAX, ref_rd;
1016 BlockNode backup, ref_b;
1017 const int index= mb_x + mb_y * b_stride;
1018 BlockNode *block= &s->block[index];
1019 BlockNode *tb = mb_y ? &s->block[index-b_stride ] : NULL;
1020 BlockNode *lb = mb_x ? &s->block[index -1] : NULL;
1021 BlockNode *rb = mb_x+1<b_width ? &s->block[index +1] : NULL;
1022 BlockNode *bb = mb_y+1<b_height ? &s->block[index+b_stride ] : NULL;
1023 BlockNode *tlb= mb_x && mb_y ? &s->block[index-b_stride-1] : NULL;
1024 BlockNode *trb= mb_x+1<b_width && mb_y ? &s->block[index-b_stride+1] : NULL;
1025 BlockNode *blb= mb_x && mb_y+1<b_height ? &s->block[index+b_stride-1] : NULL;
1026 BlockNode *brb= mb_x+1<b_width && mb_y+1<b_height ? &s->block[index+b_stride+1] : NULL;
1027 const int b_w= (MB_SIZE >> s->block_max_depth);
1028 uint8_t obmc_edged[MB_SIZE * 2][MB_SIZE * 2];
1030 if(pass && (block->type & BLOCK_OPT))
1032 block->type |= BLOCK_OPT;
1036 if(!s->me_cache_generation)
1037 memset(s->me_cache, 0, sizeof(s->me_cache));
1038 s->me_cache_generation += 1<<22;
1040 //FIXME precalculate
1043 for (y = 0; y < b_w * 2; y++)
1044 memcpy(obmc_edged[y], ff_obmc_tab[s->block_max_depth] + y * b_w * 2, b_w * 2);
1046 for(y=0; y<b_w*2; y++)
1047 memset(obmc_edged[y], obmc_edged[y][0] + obmc_edged[y][b_w-1], b_w);
1048 if(mb_x==b_stride-1)
1049 for(y=0; y<b_w*2; y++)
1050 memset(obmc_edged[y]+b_w, obmc_edged[y][b_w] + obmc_edged[y][b_w*2-1], b_w);
1052 for(x=0; x<b_w*2; x++)
1053 obmc_edged[0][x] += obmc_edged[b_w-1][x];
1054 for(y=1; y<b_w; y++)
1055 memcpy(obmc_edged[y], obmc_edged[0], b_w*2);
1057 if(mb_y==b_height-1){
1058 for(x=0; x<b_w*2; x++)
1059 obmc_edged[b_w*2-1][x] += obmc_edged[b_w][x];
1060 for(y=b_w; y<b_w*2-1; y++)
1061 memcpy(obmc_edged[y], obmc_edged[b_w*2-1], b_w*2);
1065 //skip stuff outside the picture
1066 if(mb_x==0 || mb_y==0 || mb_x==b_width-1 || mb_y==b_height-1){
1067 uint8_t *src= s-> input_picture->data[0];
1068 uint8_t *dst= s->current_picture->data[0];
1069 const int stride= s->current_picture->linesize[0];
1070 const int block_w= MB_SIZE >> s->block_max_depth;
1071 const int block_h= MB_SIZE >> s->block_max_depth;
1072 const int sx= block_w*mb_x - block_w/2;
1073 const int sy= block_h*mb_y - block_h/2;
1074 const int w= s->plane[0].width;
1075 const int h= s->plane[0].height;
1079 memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1080 for(y=h; y<sy+block_h*2; y++)
1081 memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1083 for(y=sy; y<sy+block_h*2; y++)
1084 memcpy(dst + sx + y*stride, src + sx + y*stride, -sx);
1086 if(sx+block_w*2 > w){
1087 for(y=sy; y<sy+block_h*2; y++)
1088 memcpy(dst + w + y*stride, src + w + y*stride, sx+block_w*2 - w);
1092 // intra(black) = neighbors' contribution to the current block
1093 for(i=0; i < s->nb_planes; i++)
1094 color[i]= get_dc(s, mb_x, mb_y, i);
1096 // get previous score (cannot be cached due to OBMC)
1097 if(pass > 0 && (block->type&BLOCK_INTRA)){
1098 int color0[3]= {block->color[0], block->color[1], block->color[2]};
1099 check_block(s, mb_x, mb_y, color0, 1, obmc_edged, &best_rd);
1101 check_block_inter(s, mb_x, mb_y, block->mx, block->my, obmc_edged, &best_rd);
1105 for(ref=0; ref < s->ref_frames; ref++){
1106 int16_t (*mvr)[2]= &s->ref_mvs[ref][index];
1107 if(s->ref_scores[ref][index] > s->ref_scores[ref_b.ref][index]*3/2) //FIXME tune threshold
1112 check_block_inter(s, mb_x, mb_y, mvr[0][0], mvr[0][1], obmc_edged, &best_rd);
1113 check_block_inter(s, mb_x, mb_y, 0, 0, obmc_edged, &best_rd);
1115 check_block_inter(s, mb_x, mb_y, mvr[-b_stride][0], mvr[-b_stride][1], obmc_edged, &best_rd);
1117 check_block_inter(s, mb_x, mb_y, mvr[-1][0], mvr[-1][1], obmc_edged, &best_rd);
1119 check_block_inter(s, mb_x, mb_y, mvr[1][0], mvr[1][1], obmc_edged, &best_rd);
1121 check_block_inter(s, mb_x, mb_y, mvr[b_stride][0], mvr[b_stride][1], obmc_edged, &best_rd);
1124 //FIXME avoid subpel interpolation / round to nearest integer
1126 int newx = block->mx;
1127 int newy = block->my;
1128 int dia_size = s->iterative_dia_size ? s->iterative_dia_size : FFMAX(s->avctx->dia_size, 1);
1130 for(i=0; i < dia_size; i++){
1132 dia_change |= check_block_inter(s, mb_x, mb_y, newx+4*(i-j), newy+(4*j), obmc_edged, &best_rd);
1133 dia_change |= check_block_inter(s, mb_x, mb_y, newx-4*(i-j), newy-(4*j), obmc_edged, &best_rd);
1134 dia_change |= check_block_inter(s, mb_x, mb_y, newx-(4*j), newy+4*(i-j), obmc_edged, &best_rd);
1135 dia_change |= check_block_inter(s, mb_x, mb_y, newx+(4*j), newy-4*(i-j), obmc_edged, &best_rd);
1141 static const int square[8][2]= {{+1, 0},{-1, 0},{ 0,+1},{ 0,-1},{+1,+1},{-1,-1},{+1,-1},{-1,+1},};
1144 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+square[i][0], block->my+square[i][1], obmc_edged, &best_rd);
1146 //FIXME or try the standard 2 pass qpel or similar
1148 mvr[0][0]= block->mx;
1149 mvr[0][1]= block->my;
1150 if(ref_rd > best_rd){
1157 check_block(s, mb_x, mb_y, color, 1, obmc_edged, &best_rd);
1158 //FIXME RD style color selection
1159 if(!same_block(block, &backup)){
1160 if(tb ) tb ->type &= ~BLOCK_OPT;
1161 if(lb ) lb ->type &= ~BLOCK_OPT;
1162 if(rb ) rb ->type &= ~BLOCK_OPT;
1163 if(bb ) bb ->type &= ~BLOCK_OPT;
1164 if(tlb) tlb->type &= ~BLOCK_OPT;
1165 if(trb) trb->type &= ~BLOCK_OPT;
1166 if(blb) blb->type &= ~BLOCK_OPT;
1167 if(brb) brb->type &= ~BLOCK_OPT;
1172 av_log(s->avctx, AV_LOG_DEBUG, "pass:%d changed:%d\n", pass, change);
1177 if(s->block_max_depth == 1){
1179 for(mb_y= 0; mb_y<b_height; mb_y+=2){
1180 for(mb_x= 0; mb_x<b_width; mb_x+=2){
1182 int best_rd, init_rd;
1183 const int index= mb_x + mb_y * b_stride;
1186 b[0]= &s->block[index];
1188 b[2]= b[0]+b_stride;
1190 if(same_block(b[0], b[1]) &&
1191 same_block(b[0], b[2]) &&
1192 same_block(b[0], b[3]))
1195 if(!s->me_cache_generation)
1196 memset(s->me_cache, 0, sizeof(s->me_cache));
1197 s->me_cache_generation += 1<<22;
1199 init_rd= best_rd= get_4block_rd(s, mb_x, mb_y, 0);
1201 //FIXME more multiref search?
1202 check_4block_inter(s, mb_x, mb_y,
1203 (b[0]->mx + b[1]->mx + b[2]->mx + b[3]->mx + 2) >> 2,
1204 (b[0]->my + b[1]->my + b[2]->my + b[3]->my + 2) >> 2, 0, &best_rd);
1207 if(!(b[i]->type&BLOCK_INTRA))
1208 check_4block_inter(s, mb_x, mb_y, b[i]->mx, b[i]->my, b[i]->ref, &best_rd);
1210 if(init_rd != best_rd)
1214 av_log(s->avctx, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4);
1218 static void encode_blocks(SnowContext *s, int search){
1223 if(s->motion_est == FF_ME_ITER && !s->keyframe && search)
1227 if(s->c.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit
1228 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
1232 if(s->motion_est == FF_ME_ITER || !search)
1233 encode_q_branch2(s, 0, x, y);
1235 encode_q_branch (s, 0, x, y);
1240 static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias){
1241 const int w= b->width;
1242 const int h= b->height;
1243 const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1244 const int qmul= ff_qexp[qlog&(QROOT-1)]<<((qlog>>QSHIFT) + ENCODER_EXTRA_BITS);
1245 int x,y, thres1, thres2;
1247 if(s->qlog == LOSSLESS_QLOG){
1250 dst[x + y*stride]= src[x + y*stride];
1254 bias= bias ? 0 : (3*qmul)>>3;
1255 thres1= ((qmul - bias)>>QEXPSHIFT) - 1;
1261 int i= src[x + y*stride];
1263 if((unsigned)(i+thres1) > thres2){
1266 i/= qmul; //FIXME optimize
1267 dst[x + y*stride]= i;
1271 i/= qmul; //FIXME optimize
1272 dst[x + y*stride]= -i;
1275 dst[x + y*stride]= 0;
1281 int i= src[x + y*stride];
1283 if((unsigned)(i+thres1) > thres2){
1286 i= (i + bias) / qmul; //FIXME optimize
1287 dst[x + y*stride]= i;
1291 i= (i + bias) / qmul; //FIXME optimize
1292 dst[x + y*stride]= -i;
1295 dst[x + y*stride]= 0;
1301 static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride){
1302 const int w= b->width;
1303 const int h= b->height;
1304 const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1305 const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1306 const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
1309 if(s->qlog == LOSSLESS_QLOG) return;
1313 int i= src[x + y*stride];
1315 src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias
1317 src[x + y*stride]= (( i*qmul + qadd)>>(QEXPSHIFT));
1323 static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1324 const int w= b->width;
1325 const int h= b->height;
1328 for(y=h-1; y>=0; y--){
1329 for(x=w-1; x>=0; x--){
1330 int i= x + y*stride;
1334 if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1335 else src[i] -= src[i - 1];
1337 if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1338 else src[i] -= src[i - 1];
1341 if(y) src[i] -= src[i - stride];
1347 static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1348 const int w= b->width;
1349 const int h= b->height;
1354 int i= x + y*stride;
1358 if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1359 else src[i] += src[i - 1];
1361 if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1362 else src[i] += src[i - 1];
1365 if(y) src[i] += src[i - stride];
1371 static void encode_qlogs(SnowContext *s){
1372 int plane_index, level, orientation;
1374 for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1375 for(level=0; level<s->spatial_decomposition_count; level++){
1376 for(orientation=level ? 1:0; orientation<4; orientation++){
1377 if(orientation==2) continue;
1378 put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1);
1384 static void encode_header(SnowContext *s){
1388 memset(kstate, MID_STATE, sizeof(kstate));
1390 put_rac(&s->c, kstate, s->keyframe);
1391 if(s->keyframe || s->always_reset){
1392 ff_snow_reset_contexts(s);
1393 s->last_spatial_decomposition_type=
1397 s->last_block_max_depth= 0;
1398 for(plane_index=0; plane_index<2; plane_index++){
1399 Plane *p= &s->plane[plane_index];
1402 memset(p->last_hcoeff, 0, sizeof(p->last_hcoeff));
1406 put_symbol(&s->c, s->header_state, s->version, 0);
1407 put_rac(&s->c, s->header_state, s->always_reset);
1408 put_symbol(&s->c, s->header_state, s->temporal_decomposition_type, 0);
1409 put_symbol(&s->c, s->header_state, s->temporal_decomposition_count, 0);
1410 put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
1411 put_symbol(&s->c, s->header_state, s->colorspace_type, 0);
1412 if (s->nb_planes > 2) {
1413 put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0);
1414 put_symbol(&s->c, s->header_state, s->chroma_v_shift, 0);
1416 put_rac(&s->c, s->header_state, s->spatial_scalability);
1417 // put_rac(&s->c, s->header_state, s->rate_scalability);
1418 put_symbol(&s->c, s->header_state, s->max_ref_frames-1, 0);
1425 for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1426 Plane *p= &s->plane[plane_index];
1427 update_mc |= p->last_htaps != p->htaps;
1428 update_mc |= p->last_diag_mc != p->diag_mc;
1429 update_mc |= !!memcmp(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1431 put_rac(&s->c, s->header_state, update_mc);
1433 for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1434 Plane *p= &s->plane[plane_index];
1435 put_rac(&s->c, s->header_state, p->diag_mc);
1436 put_symbol(&s->c, s->header_state, p->htaps/2-1, 0);
1437 for(i= p->htaps/2; i; i--)
1438 put_symbol(&s->c, s->header_state, FFABS(p->hcoeff[i]), 0);
1441 if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
1442 put_rac(&s->c, s->header_state, 1);
1443 put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
1446 put_rac(&s->c, s->header_state, 0);
1449 put_symbol(&s->c, s->header_state, s->spatial_decomposition_type - s->last_spatial_decomposition_type, 1);
1450 put_symbol(&s->c, s->header_state, s->qlog - s->last_qlog , 1);
1451 put_symbol(&s->c, s->header_state, s->mv_scale - s->last_mv_scale, 1);
1452 put_symbol(&s->c, s->header_state, s->qbias - s->last_qbias , 1);
1453 put_symbol(&s->c, s->header_state, s->block_max_depth - s->last_block_max_depth, 1);
1457 static void update_last_header_values(SnowContext *s){
1461 for(plane_index=0; plane_index<2; plane_index++){
1462 Plane *p= &s->plane[plane_index];
1463 p->last_diag_mc= p->diag_mc;
1464 p->last_htaps = p->htaps;
1465 memcpy(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1469 s->last_spatial_decomposition_type = s->spatial_decomposition_type;
1470 s->last_qlog = s->qlog;
1471 s->last_qbias = s->qbias;
1472 s->last_mv_scale = s->mv_scale;
1473 s->last_block_max_depth = s->block_max_depth;
1474 s->last_spatial_decomposition_count = s->spatial_decomposition_count;
1477 static int qscale2qlog(int qscale){
1478 return lrint(QROOT*log2(qscale / (float)FF_QP2LAMBDA))
1479 + 61*QROOT/8; ///< 64 > 60
1482 static int ratecontrol_1pass(SnowContext *s, AVFrame *pict)
1484 /* Estimate the frame's complexity as a sum of weighted dwt coefficients.
1485 * FIXME we know exact mv bits at this point,
1486 * but ratecontrol isn't set up to include them. */
1487 uint32_t coef_sum= 0;
1488 int level, orientation, delta_qlog;
1490 for(level=0; level<s->spatial_decomposition_count; level++){
1491 for(orientation=level ? 1 : 0; orientation<4; orientation++){
1492 SubBand *b= &s->plane[0].band[level][orientation];
1493 IDWTELEM *buf= b->ibuf;
1494 const int w= b->width;
1495 const int h= b->height;
1496 const int stride= b->stride;
1497 const int qlog= av_clip(2*QROOT + b->qlog, 0, QROOT*16);
1498 const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1499 const int qdiv= (1<<16)/qmul;
1501 //FIXME this is ugly
1504 buf[x+y*stride]= b->buf[x+y*stride];
1506 decorrelate(s, b, buf, stride, 1, 0);
1509 coef_sum+= abs(buf[x+y*stride]) * qdiv >> 16;
1513 /* ugly, ratecontrol just takes a sqrt again */
1514 av_assert0(coef_sum < INT_MAX);
1515 coef_sum = (uint64_t)coef_sum * coef_sum >> 16;
1517 if(pict->pict_type == AV_PICTURE_TYPE_I){
1518 s->m.current_picture.mb_var_sum= coef_sum;
1519 s->m.current_picture.mc_mb_var_sum= 0;
1521 s->m.current_picture.mc_mb_var_sum= coef_sum;
1522 s->m.current_picture.mb_var_sum= 0;
1525 pict->quality= ff_rate_estimate_qscale(&s->m, 1);
1526 if (pict->quality < 0)
1528 s->lambda= pict->quality * 3/2;
1529 delta_qlog= qscale2qlog(pict->quality) - s->qlog;
1530 s->qlog+= delta_qlog;
1534 static void calculate_visual_weight(SnowContext *s, Plane *p){
1535 int width = p->width;
1536 int height= p->height;
1537 int level, orientation, x, y;
1539 for(level=0; level<s->spatial_decomposition_count; level++){
1540 for(orientation=level ? 1 : 0; orientation<4; orientation++){
1541 SubBand *b= &p->band[level][orientation];
1542 IDWTELEM *ibuf= b->ibuf;
1545 memset(s->spatial_idwt_buffer, 0, sizeof(*s->spatial_idwt_buffer)*width*height);
1546 ibuf[b->width/2 + b->height/2*b->stride]= 256*16;
1547 ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, width, height, width, s->spatial_decomposition_type, s->spatial_decomposition_count);
1548 for(y=0; y<height; y++){
1549 for(x=0; x<width; x++){
1550 int64_t d= s->spatial_idwt_buffer[x + y*width]*16;
1555 b->qlog= (int)(QROOT * log2(352256.0/sqrt(error)) + 0.5);
1560 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
1561 const AVFrame *pict, int *got_packet)
1563 SnowContext *s = avctx->priv_data;
1564 RangeCoder * const c= &s->c;
1566 const int width= s->avctx->width;
1567 const int height= s->avctx->height;
1568 int level, orientation, plane_index, i, y, ret;
1569 uint8_t rc_header_bak[sizeof(s->header_state)];
1570 uint8_t rc_block_bak[sizeof(s->block_state)];
1572 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)
1575 ff_init_range_encoder(c, pkt->data, pkt->size);
1576 ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1578 for(i=0; i < s->nb_planes; i++){
1579 int hshift= i ? s->chroma_h_shift : 0;
1580 int vshift= i ? s->chroma_v_shift : 0;
1581 for(y=0; y<AV_CEIL_RSHIFT(height, vshift); y++)
1582 memcpy(&s->input_picture->data[i][y * s->input_picture->linesize[i]],
1583 &pict->data[i][y * pict->linesize[i]],
1584 AV_CEIL_RSHIFT(width, hshift));
1585 s->mpvencdsp.draw_edges(s->input_picture->data[i], s->input_picture->linesize[i],
1586 AV_CEIL_RSHIFT(width, hshift), AV_CEIL_RSHIFT(height, vshift),
1587 EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
1588 EDGE_TOP | EDGE_BOTTOM);
1592 pic = s->input_picture;
1593 pic->pict_type = pict->pict_type;
1594 pic->quality = pict->quality;
1596 s->m.picture_number= avctx->frame_number;
1597 if(avctx->flags&AV_CODEC_FLAG_PASS2){
1598 s->m.pict_type = pic->pict_type = s->m.rc_context.entry[avctx->frame_number].new_pict_type;
1599 s->keyframe = pic->pict_type == AV_PICTURE_TYPE_I;
1600 if(!(avctx->flags&AV_CODEC_FLAG_QSCALE)) {
1601 pic->quality = ff_rate_estimate_qscale(&s->m, 0);
1602 if (pic->quality < 0)
1606 s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
1607 s->m.pict_type = pic->pict_type = s->keyframe ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P;
1610 if(s->pass1_rc && avctx->frame_number == 0)
1611 pic->quality = 2*FF_QP2LAMBDA;
1613 s->qlog = qscale2qlog(pic->quality);
1614 s->lambda = pic->quality * 3/2;
1616 if (s->qlog < 0 || (!pic->quality && (avctx->flags & AV_CODEC_FLAG_QSCALE))) {
1617 s->qlog= LOSSLESS_QLOG;
1619 }//else keep previous frame's qlog until after motion estimation
1621 #if FF_API_CODED_FRAME
1622 FF_DISABLE_DEPRECATION_WARNINGS
1623 av_frame_unref(avctx->coded_frame);
1624 FF_ENABLE_DEPRECATION_WARNINGS
1627 if (s->current_picture->data[0]) {
1628 int w = s->avctx->width;
1629 int h = s->avctx->height;
1631 #if FF_API_CODED_FRAME
1632 ret = av_frame_make_writable(s->current_picture);
1637 s->mpvencdsp.draw_edges(s->current_picture->data[0],
1638 s->current_picture->linesize[0], w , h ,
1639 EDGE_WIDTH , EDGE_WIDTH , EDGE_TOP | EDGE_BOTTOM);
1640 if (s->current_picture->data[2]) {
1641 s->mpvencdsp.draw_edges(s->current_picture->data[1],
1642 s->current_picture->linesize[1], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
1643 EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
1644 s->mpvencdsp.draw_edges(s->current_picture->data[2],
1645 s->current_picture->linesize[2], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
1646 EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
1651 ff_snow_frame_start(s);
1652 #if FF_API_CODED_FRAME
1653 FF_DISABLE_DEPRECATION_WARNINGS
1654 ret = av_frame_ref(avctx->coded_frame, s->current_picture);
1655 FF_ENABLE_DEPRECATION_WARNINGS
1660 s->m.current_picture_ptr= &s->m.current_picture;
1661 s->m.current_picture.f = s->current_picture;
1662 s->m.current_picture.f->pts = pict->pts;
1663 if(pic->pict_type == AV_PICTURE_TYPE_P){
1664 int block_width = (width +15)>>4;
1665 int block_height= (height+15)>>4;
1666 int stride= s->current_picture->linesize[0];
1668 av_assert0(s->current_picture->data[0]);
1669 av_assert0(s->last_picture[0]->data[0]);
1671 s->m.avctx= s->avctx;
1672 s->m. last_picture.f = s->last_picture[0];
1673 s->m. new_picture.f = s->input_picture;
1674 s->m. last_picture_ptr= &s->m. last_picture;
1675 s->m.linesize = stride;
1676 s->m.uvlinesize= s->current_picture->linesize[1];
1678 s->m.height= height;
1679 s->m.mb_width = block_width;
1680 s->m.mb_height= block_height;
1681 s->m.mb_stride= s->m.mb_width+1;
1682 s->m.b8_stride= 2*s->m.mb_width+1;
1684 s->m.pict_type = pic->pict_type;
1685 s->m.motion_est= s->motion_est;
1686 s->m.me.scene_change_score=0;
1687 s->m.me.dia_size = avctx->dia_size;
1688 s->m.quarter_sample= (s->avctx->flags & AV_CODEC_FLAG_QPEL)!=0;
1689 s->m.out_format= FMT_H263;
1690 s->m.unrestricted_mv= 1;
1692 s->m.lambda = s->lambda;
1693 s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
1694 s->lambda2= s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
1696 s->m.mecc= s->mecc; //move
1697 s->m.qdsp= s->qdsp; //move
1698 s->m.hdsp = s->hdsp;
1700 s->hdsp = s->m.hdsp;
1705 memcpy(rc_header_bak, s->header_state, sizeof(s->header_state));
1706 memcpy(rc_block_bak, s->block_state, sizeof(s->block_state));
1711 s->spatial_decomposition_count= 5;
1713 while( !(width >>(s->chroma_h_shift + s->spatial_decomposition_count))
1714 || !(height>>(s->chroma_v_shift + s->spatial_decomposition_count)))
1715 s->spatial_decomposition_count--;
1717 if (s->spatial_decomposition_count <= 0) {
1718 av_log(avctx, AV_LOG_ERROR, "Resolution too low\n");
1719 return AVERROR(EINVAL);
1722 s->m.pict_type = pic->pict_type;
1723 s->qbias = pic->pict_type == AV_PICTURE_TYPE_P ? 2 : 0;
1725 ff_snow_common_init_after_header(avctx);
1727 if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
1728 for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1729 calculate_visual_weight(s, &s->plane[plane_index]);
1734 s->m.misc_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1735 encode_blocks(s, 1);
1736 s->m.mv_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits;
1738 for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1739 Plane *p= &s->plane[plane_index];
1743 // int bits= put_bits_count(&s->c.pb);
1745 if (!s->memc_only) {
1747 if(pict->data[plane_index]) //FIXME gray hack
1750 s->spatial_idwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<FRAC_BITS;
1753 predict_plane(s, s->spatial_idwt_buffer, plane_index, 0);
1756 && pic->pict_type == AV_PICTURE_TYPE_P
1757 && !(avctx->flags&AV_CODEC_FLAG_PASS2)
1758 && s->m.me.scene_change_score > s->scenechange_threshold){
1759 ff_init_range_encoder(c, pkt->data, pkt->size);
1760 ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1761 pic->pict_type= AV_PICTURE_TYPE_I;
1763 s->current_picture->key_frame=1;
1767 if(s->qlog == LOSSLESS_QLOG){
1770 s->spatial_dwt_buffer[y*w + x]= (s->spatial_idwt_buffer[y*w + x] + (1<<(FRAC_BITS-1))-1)>>FRAC_BITS;
1776 s->spatial_dwt_buffer[y*w + x]= s->spatial_idwt_buffer[y*w + x] * (1 << ENCODER_EXTRA_BITS);
1781 ff_spatial_dwt(s->spatial_dwt_buffer, s->temp_dwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
1783 if(s->pass1_rc && plane_index==0){
1784 int delta_qlog = ratecontrol_1pass(s, pic);
1785 if (delta_qlog <= INT_MIN)
1788 //reordering qlog in the bitstream would eliminate this reset
1789 ff_init_range_encoder(c, pkt->data, pkt->size);
1790 memcpy(s->header_state, rc_header_bak, sizeof(s->header_state));
1791 memcpy(s->block_state, rc_block_bak, sizeof(s->block_state));
1793 encode_blocks(s, 0);
1797 for(level=0; level<s->spatial_decomposition_count; level++){
1798 for(orientation=level ? 1 : 0; orientation<4; orientation++){
1799 SubBand *b= &p->band[level][orientation];
1801 quantize(s, b, b->ibuf, b->buf, b->stride, s->qbias);
1803 decorrelate(s, b, b->ibuf, b->stride, pic->pict_type == AV_PICTURE_TYPE_P, 0);
1804 if (!s->no_bitstream)
1805 encode_subband(s, b, b->ibuf, b->parent ? b->parent->ibuf : NULL, b->stride, orientation);
1806 av_assert0(b->parent==NULL || b->parent->stride == b->stride*2);
1808 correlate(s, b, b->ibuf, b->stride, 1, 0);
1812 for(level=0; level<s->spatial_decomposition_count; level++){
1813 for(orientation=level ? 1 : 0; orientation<4; orientation++){
1814 SubBand *b= &p->band[level][orientation];
1816 dequantize(s, b, b->ibuf, b->stride);
1820 ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
1821 if(s->qlog == LOSSLESS_QLOG){
1824 s->spatial_idwt_buffer[y*w + x]<<=FRAC_BITS;
1828 predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1831 if(pic->pict_type == AV_PICTURE_TYPE_I){
1834 s->current_picture->data[plane_index][y*s->current_picture->linesize[plane_index] + x]=
1835 pict->data[plane_index][y*pict->linesize[plane_index] + x];
1839 memset(s->spatial_idwt_buffer, 0, sizeof(IDWTELEM)*w*h);
1840 predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1843 if(s->avctx->flags&AV_CODEC_FLAG_PSNR){
1846 if(pict->data[plane_index]) //FIXME gray hack
1849 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];
1853 s->avctx->error[plane_index] += error;
1854 s->encoding_error[plane_index] = error;
1860 update_last_header_values(s);
1862 ff_snow_release_buffer(avctx);
1864 s->current_picture->coded_picture_number = avctx->frame_number;
1865 s->current_picture->pict_type = pic->pict_type;
1866 s->current_picture->quality = pic->quality;
1867 s->m.frame_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1868 s->m.p_tex_bits = s->m.frame_bits - s->m.misc_bits - s->m.mv_bits;
1869 s->m.current_picture.f->display_picture_number =
1870 s->m.current_picture.f->coded_picture_number = avctx->frame_number;
1871 s->m.current_picture.f->quality = pic->quality;
1872 s->m.total_bits += 8*(s->c.bytestream - s->c.bytestream_start);
1874 if (ff_rate_estimate_qscale(&s->m, 0) < 0)
1876 if(avctx->flags&AV_CODEC_FLAG_PASS1)
1877 ff_write_pass1_stats(&s->m);
1878 s->m.last_pict_type = s->m.pict_type;
1882 ff_side_data_set_encoder_stats(pkt, s->current_picture->quality,
1884 (s->avctx->flags&AV_CODEC_FLAG_PSNR) ? 4 : 0,
1885 s->current_picture->pict_type);
1887 #if FF_API_ERROR_FRAME
1888 FF_DISABLE_DEPRECATION_WARNINGS
1889 memcpy(s->current_picture->error, s->encoding_error, sizeof(s->encoding_error));
1890 FF_ENABLE_DEPRECATION_WARNINGS
1893 pkt->size = ff_rac_terminate(c, 0);
1894 if (s->current_picture->key_frame)
1895 pkt->flags |= AV_PKT_FLAG_KEY;
1901 static av_cold int encode_end(AVCodecContext *avctx)
1903 SnowContext *s = avctx->priv_data;
1905 ff_snow_common_end(s);
1906 ff_rate_control_uninit(&s->m);
1907 av_frame_free(&s->input_picture);
1908 av_freep(&avctx->stats_out);
1913 #define OFFSET(x) offsetof(SnowContext, x)
1914 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1915 static const AVOption options[] = {
1916 {"motion_est", "motion estimation algorithm", OFFSET(motion_est), AV_OPT_TYPE_INT, {.i64 = FF_ME_EPZS }, FF_ME_ZERO, FF_ME_ITER, VE, "motion_est" },
1917 { "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, VE, "motion_est" },
1918 { "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, VE, "motion_est" },
1919 { "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, VE, "motion_est" },
1920 { "iter", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ITER }, 0, 0, VE, "motion_est" },
1921 { "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 },
1922 { "no_bitstream", "Skip final bitstream writeout.", OFFSET(no_bitstream), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1923 { "intra_penalty", "Penalty for intra blocks in block decission", OFFSET(intra_penalty), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1924 { "iterative_dia_size", "Dia size for the iterative ME", OFFSET(iterative_dia_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1925 { "sc_threshold", "Scene change threshold", OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, VE },
1926 { "pred", "Spatial decomposition type", OFFSET(pred), AV_OPT_TYPE_INT, { .i64 = 0 }, DWT_97, DWT_53, VE, "pred" },
1927 { "dwt97", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "pred" },
1928 { "dwt53", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "pred" },
1929 { "rc_eq", "Set rate control equation. When computing the expression, besides the standard functions "
1930 "defined in the section 'Expression Evaluation', the following functions are available: "
1931 "bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv "
1932 "fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.",
1933 OFFSET(m.rc_eq), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, VE },
1937 static const AVClass snowenc_class = {
1938 .class_name = "snow encoder",
1939 .item_name = av_default_item_name,
1941 .version = LIBAVUTIL_VERSION_INT,
1944 AVCodec ff_snow_encoder = {
1946 .long_name = NULL_IF_CONFIG_SMALL("Snow"),
1947 .type = AVMEDIA_TYPE_VIDEO,
1948 .id = AV_CODEC_ID_SNOW,
1949 .priv_data_size = sizeof(SnowContext),
1950 .init = encode_init,
1951 .encode2 = encode_frame,
1952 .close = encode_end,
1953 .pix_fmts = (const enum AVPixelFormat[]){
1954 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV444P,
1958 .priv_class = &snowenc_class,
1959 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
1960 FF_CODEC_CAP_INIT_CLEANUP,