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snowenc.c
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1 /*
2  * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
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"
26 #include "avcodec.h"
27 #include "internal.h"
28 #include "snow_dwt.h"
29 #include "snow.h"
30 
31 #include "rangecoder.h"
32 #include "mathops.h"
33 
34 #include "mpegvideo.h"
35 #include "h263.h"
36 
38 {
39  SnowContext *s = avctx->priv_data;
40  int plane_index, ret;
41  int i;
42 
43 #if FF_API_PRIVATE_OPT
45  if (avctx->prediction_method)
46  s->pred = avctx->prediction_method;
48 #endif
49 
50  if(s->pred == DWT_97
51  && (avctx->flags & AV_CODEC_FLAG_QSCALE)
52  && avctx->global_quality == 0){
53  av_log(avctx, AV_LOG_ERROR, "The 9/7 wavelet is incompatible with lossless mode.\n");
54  return AVERROR(EINVAL);
55  }
56 
57  s->spatial_decomposition_type= s->pred; //FIXME add decorrelator type r transform_type
58 
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;
61 
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;
69  }
70 
71  if ((ret = ff_snow_common_init(avctx)) < 0) {
72  return ret;
73  }
75 
77 
78  s->version=0;
79 
80  s->m.avctx = avctx;
81  s->m.bit_rate= avctx->bit_rate;
82  s->m.lmin = avctx->mb_lmin;
83  s->m.lmax = avctx->mb_lmax;
84 
85  s->m.me.temp =
86  s->m.me.scratchpad= av_mallocz_array((avctx->width+64), 2*16*2*sizeof(uint8_t));
87  s->m.me.map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
88  s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
89  s->m.sc.obmc_scratchpad= av_mallocz(MB_SIZE*MB_SIZE*12*sizeof(uint32_t));
90  if (!s->m.me.scratchpad || !s->m.me.map || !s->m.me.score_map || !s->m.sc.obmc_scratchpad)
91  return AVERROR(ENOMEM);
92 
93  ff_h263_encode_init(&s->m); //mv_penalty
94 
95  s->max_ref_frames = av_clip(avctx->refs, 1, MAX_REF_FRAMES);
96 
97  if(avctx->flags&AV_CODEC_FLAG_PASS1){
98  if(!avctx->stats_out)
99  avctx->stats_out = av_mallocz(256);
100 
101  if (!avctx->stats_out)
102  return AVERROR(ENOMEM);
103  }
104  if((avctx->flags&AV_CODEC_FLAG_PASS2) || !(avctx->flags&AV_CODEC_FLAG_QSCALE)){
105  ret = ff_rate_control_init(&s->m);
106  if(ret < 0)
107  return ret;
108  }
110 
111  switch(avctx->pix_fmt){
112  case AV_PIX_FMT_YUV444P:
113 // case AV_PIX_FMT_YUV422P:
114  case AV_PIX_FMT_YUV420P:
115 // case AV_PIX_FMT_YUV411P:
116  case AV_PIX_FMT_YUV410P:
117  s->nb_planes = 3;
118  s->colorspace_type= 0;
119  break;
120  case AV_PIX_FMT_GRAY8:
121  s->nb_planes = 1;
122  s->colorspace_type = 1;
123  break;
124 /* case AV_PIX_FMT_RGB32:
125  s->colorspace= 1;
126  break;*/
127  default:
128  av_log(avctx, AV_LOG_ERROR, "pixel format not supported\n");
129  return AVERROR_PATCHWELCOME;
130  }
131 
133  &s->chroma_v_shift);
134  if (ret) {
135  av_log(avctx, AV_LOG_ERROR, "pixel format invalid or unknown\n");
136  return ret;
137  }
138 
139  ff_set_cmp(&s->mecc, s->mecc.me_cmp, s->avctx->me_cmp);
141 
143  if (!s->input_picture)
144  return AVERROR(ENOMEM);
145 
146  if ((ret = ff_snow_get_buffer(s, s->input_picture)) < 0)
147  return ret;
148 
149  if(s->motion_est == FF_ME_ITER){
150  int size= s->b_width * s->b_height << 2*s->block_max_depth;
151  for(i=0; i<s->max_ref_frames; i++){
152  s->ref_mvs[i]= av_mallocz_array(size, sizeof(int16_t[2]));
153  s->ref_scores[i]= av_mallocz_array(size, sizeof(uint32_t));
154  if (!s->ref_mvs[i] || !s->ref_scores[i])
155  return AVERROR(ENOMEM);
156  }
157  }
158 
159  return 0;
160 }
161 
162 //near copy & paste from dsputil, FIXME
163 static int pix_sum(uint8_t * pix, int line_size, int w, int h)
164 {
165  int s, i, j;
166 
167  s = 0;
168  for (i = 0; i < h; i++) {
169  for (j = 0; j < w; j++) {
170  s += pix[0];
171  pix ++;
172  }
173  pix += line_size - w;
174  }
175  return s;
176 }
177 
178 //near copy & paste from dsputil, FIXME
179 static int pix_norm1(uint8_t * pix, int line_size, int w)
180 {
181  int s, i, j;
182  uint32_t *sq = ff_square_tab + 256;
183 
184  s = 0;
185  for (i = 0; i < w; i++) {
186  for (j = 0; j < w; j ++) {
187  s += sq[pix[0]];
188  pix ++;
189  }
190  pix += line_size - w;
191  }
192  return s;
193 }
194 
195 static inline int get_penalty_factor(int lambda, int lambda2, int type){
196  switch(type&0xFF){
197  default:
198  case FF_CMP_SAD:
199  return lambda>>FF_LAMBDA_SHIFT;
200  case FF_CMP_DCT:
201  return (3*lambda)>>(FF_LAMBDA_SHIFT+1);
202  case FF_CMP_W53:
203  return (4*lambda)>>(FF_LAMBDA_SHIFT);
204  case FF_CMP_W97:
205  return (2*lambda)>>(FF_LAMBDA_SHIFT);
206  case FF_CMP_SATD:
207  case FF_CMP_DCT264:
208  return (2*lambda)>>FF_LAMBDA_SHIFT;
209  case FF_CMP_RD:
210  case FF_CMP_PSNR:
211  case FF_CMP_SSE:
212  case FF_CMP_NSSE:
213  return lambda2>>FF_LAMBDA_SHIFT;
214  case FF_CMP_BIT:
215  return 1;
216  }
217 }
218 
219 //FIXME copy&paste
220 #define P_LEFT P[1]
221 #define P_TOP P[2]
222 #define P_TOPRIGHT P[3]
223 #define P_MEDIAN P[4]
224 #define P_MV1 P[9]
225 #define FLAG_QPEL 1 //must be 1
226 
227 static int encode_q_branch(SnowContext *s, int level, int x, int y){
228  uint8_t p_buffer[1024];
229  uint8_t i_buffer[1024];
230  uint8_t p_state[sizeof(s->block_state)];
231  uint8_t i_state[sizeof(s->block_state)];
232  RangeCoder pc, ic;
233  uint8_t *pbbak= s->c.bytestream;
234  uint8_t *pbbak_start= s->c.bytestream_start;
235  int score, score2, iscore, i_len, p_len, block_s, sum, base_bits;
236  const int w= s->b_width << s->block_max_depth;
237  const int h= s->b_height << s->block_max_depth;
238  const int rem_depth= s->block_max_depth - level;
239  const int index= (x + y*w) << rem_depth;
240  const int block_w= 1<<(LOG2_MB_SIZE - level);
241  int trx= (x+1)<<rem_depth;
242  int try= (y+1)<<rem_depth;
243  const BlockNode *left = x ? &s->block[index-1] : &null_block;
244  const BlockNode *top = y ? &s->block[index-w] : &null_block;
245  const BlockNode *right = trx<w ? &s->block[index+1] : &null_block;
246  const BlockNode *bottom= try<h ? &s->block[index+w] : &null_block;
247  const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
248  const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
249  int pl = left->color[0];
250  int pcb= left->color[1];
251  int pcr= left->color[2];
252  int pmx, pmy;
253  int mx=0, my=0;
254  int l,cr,cb;
255  const int stride= s->current_picture->linesize[0];
256  const int uvstride= s->current_picture->linesize[1];
257  uint8_t *current_data[3]= { s->input_picture->data[0] + (x + y* stride)*block_w,
258  s->input_picture->data[1] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift),
259  s->input_picture->data[2] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift)};
260  int P[10][2];
261  int16_t last_mv[3][2];
262  int qpel= !!(s->avctx->flags & AV_CODEC_FLAG_QPEL); //unused
263  const int shift= 1+qpel;
264  MotionEstContext *c= &s->m.me;
265  int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
266  int mx_context= av_log2(2*FFABS(left->mx - top->mx));
267  int my_context= av_log2(2*FFABS(left->my - top->my));
268  int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
269  int ref, best_ref, ref_score, ref_mx, ref_my;
270 
271  av_assert0(sizeof(s->block_state) >= 256);
272  if(s->keyframe){
273  set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
274  return 0;
275  }
276 
277 // clip predictors / edge ?
278 
279  P_LEFT[0]= left->mx;
280  P_LEFT[1]= left->my;
281  P_TOP [0]= top->mx;
282  P_TOP [1]= top->my;
283  P_TOPRIGHT[0]= tr->mx;
284  P_TOPRIGHT[1]= tr->my;
285 
286  last_mv[0][0]= s->block[index].mx;
287  last_mv[0][1]= s->block[index].my;
288  last_mv[1][0]= right->mx;
289  last_mv[1][1]= right->my;
290  last_mv[2][0]= bottom->mx;
291  last_mv[2][1]= bottom->my;
292 
293  s->m.mb_stride=2;
294  s->m.mb_x=
295  s->m.mb_y= 0;
296  c->skip= 0;
297 
298  av_assert1(c-> stride == stride);
299  av_assert1(c->uvstride == uvstride);
300 
305 
306  c->xmin = - x*block_w - 16+3;
307  c->ymin = - y*block_w - 16+3;
308  c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
309  c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
310 
311  if(P_LEFT[0] > (c->xmax<<shift)) P_LEFT[0] = (c->xmax<<shift);
312  if(P_LEFT[1] > (c->ymax<<shift)) P_LEFT[1] = (c->ymax<<shift);
313  if(P_TOP[0] > (c->xmax<<shift)) P_TOP[0] = (c->xmax<<shift);
314  if(P_TOP[1] > (c->ymax<<shift)) P_TOP[1] = (c->ymax<<shift);
315  if(P_TOPRIGHT[0] < (c->xmin<<shift)) P_TOPRIGHT[0]= (c->xmin<<shift);
316  if(P_TOPRIGHT[0] > (c->xmax<<shift)) P_TOPRIGHT[0]= (c->xmax<<shift); //due to pmx no clip
317  if(P_TOPRIGHT[1] > (c->ymax<<shift)) P_TOPRIGHT[1]= (c->ymax<<shift);
318 
319  P_MEDIAN[0]= mid_pred(P_LEFT[0], P_TOP[0], P_TOPRIGHT[0]);
320  P_MEDIAN[1]= mid_pred(P_LEFT[1], P_TOP[1], P_TOPRIGHT[1]);
321 
322  if (!y) {
323  c->pred_x= P_LEFT[0];
324  c->pred_y= P_LEFT[1];
325  } else {
326  c->pred_x = P_MEDIAN[0];
327  c->pred_y = P_MEDIAN[1];
328  }
329 
330  score= INT_MAX;
331  best_ref= 0;
332  for(ref=0; ref<s->ref_frames; ref++){
333  init_ref(c, current_data, s->last_picture[ref]->data, NULL, block_w*x, block_w*y, 0);
334 
335  ref_score= ff_epzs_motion_search(&s->m, &ref_mx, &ref_my, P, 0, /*ref_index*/ 0, last_mv,
336  (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w);
337 
338  av_assert2(ref_mx >= c->xmin);
339  av_assert2(ref_mx <= c->xmax);
340  av_assert2(ref_my >= c->ymin);
341  av_assert2(ref_my <= c->ymax);
342 
343  ref_score= c->sub_motion_search(&s->m, &ref_mx, &ref_my, ref_score, 0, 0, level-LOG2_MB_SIZE+4, block_w);
344  ref_score= ff_get_mb_score(&s->m, ref_mx, ref_my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0);
345  ref_score+= 2*av_log2(2*ref)*c->penalty_factor;
346  if(s->ref_mvs[ref]){
347  s->ref_mvs[ref][index][0]= ref_mx;
348  s->ref_mvs[ref][index][1]= ref_my;
349  s->ref_scores[ref][index]= ref_score;
350  }
351  if(score > ref_score){
352  score= ref_score;
353  best_ref= ref;
354  mx= ref_mx;
355  my= ref_my;
356  }
357  }
358  //FIXME if mb_cmp != SSE then intra cannot be compared currently and mb_penalty vs. lambda2
359 
360  // subpel search
361  base_bits= get_rac_count(&s->c) - 8*(s->c.bytestream - s->c.bytestream_start);
362  pc= s->c;
363  pc.bytestream_start=
364  pc.bytestream= p_buffer; //FIXME end/start? and at the other stoo
365  memcpy(p_state, s->block_state, sizeof(s->block_state));
366 
367  if(level!=s->block_max_depth)
368  put_rac(&pc, &p_state[4 + s_context], 1);
369  put_rac(&pc, &p_state[1 + left->type + top->type], 0);
370  if(s->ref_frames > 1)
371  put_symbol(&pc, &p_state[128 + 1024 + 32*ref_context], best_ref, 0);
372  pred_mv(s, &pmx, &pmy, best_ref, left, top, tr);
373  put_symbol(&pc, &p_state[128 + 32*(mx_context + 16*!!best_ref)], mx - pmx, 1);
374  put_symbol(&pc, &p_state[128 + 32*(my_context + 16*!!best_ref)], my - pmy, 1);
375  p_len= pc.bytestream - pc.bytestream_start;
376  score += (s->lambda2*(get_rac_count(&pc)-base_bits))>>FF_LAMBDA_SHIFT;
377 
378  block_s= block_w*block_w;
379  sum = pix_sum(current_data[0], stride, block_w, block_w);
380  l= (sum + block_s/2)/block_s;
381  iscore = pix_norm1(current_data[0], stride, block_w) - 2*l*sum + l*l*block_s;
382 
383  if (s->nb_planes > 2) {
384  block_s= block_w*block_w>>(s->chroma_h_shift + s->chroma_v_shift);
385  sum = pix_sum(current_data[1], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
386  cb= (sum + block_s/2)/block_s;
387  // iscore += pix_norm1(&current_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s;
388  sum = pix_sum(current_data[2], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
389  cr= (sum + block_s/2)/block_s;
390  // iscore += pix_norm1(&current_mb[2][0], uvstride, block_w>>1) - 2*cr*sum + cr*cr*block_s;
391  }else
392  cb = cr = 0;
393 
394  ic= s->c;
395  ic.bytestream_start=
396  ic.bytestream= i_buffer; //FIXME end/start? and at the other stoo
397  memcpy(i_state, s->block_state, sizeof(s->block_state));
398  if(level!=s->block_max_depth)
399  put_rac(&ic, &i_state[4 + s_context], 1);
400  put_rac(&ic, &i_state[1 + left->type + top->type], 1);
401  put_symbol(&ic, &i_state[32], l-pl , 1);
402  if (s->nb_planes > 2) {
403  put_symbol(&ic, &i_state[64], cb-pcb, 1);
404  put_symbol(&ic, &i_state[96], cr-pcr, 1);
405  }
406  i_len= ic.bytestream - ic.bytestream_start;
407  iscore += (s->lambda2*(get_rac_count(&ic)-base_bits))>>FF_LAMBDA_SHIFT;
408 
409  av_assert1(iscore < 255*255*256 + s->lambda2*10);
410  av_assert1(iscore >= 0);
411  av_assert1(l>=0 && l<=255);
412  av_assert1(pl>=0 && pl<=255);
413 
414  if(level==0){
415  int varc= iscore >> 8;
416  int vard= score >> 8;
417  if (vard <= 64 || vard < varc)
418  c->scene_change_score+= ff_sqrt(vard) - ff_sqrt(varc);
419  else
420  c->scene_change_score+= s->m.qscale;
421  }
422 
423  if(level!=s->block_max_depth){
424  put_rac(&s->c, &s->block_state[4 + s_context], 0);
425  score2 = encode_q_branch(s, level+1, 2*x+0, 2*y+0);
426  score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+0);
427  score2+= encode_q_branch(s, level+1, 2*x+0, 2*y+1);
428  score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+1);
429  score2+= s->lambda2>>FF_LAMBDA_SHIFT; //FIXME exact split overhead
430 
431  if(score2 < score && score2 < iscore)
432  return score2;
433  }
434 
435  if(iscore < score){
436  pred_mv(s, &pmx, &pmy, 0, left, top, tr);
437  memcpy(pbbak, i_buffer, i_len);
438  s->c= ic;
439  s->c.bytestream_start= pbbak_start;
440  s->c.bytestream= pbbak + i_len;
441  set_blocks(s, level, x, y, l, cb, cr, pmx, pmy, 0, BLOCK_INTRA);
442  memcpy(s->block_state, i_state, sizeof(s->block_state));
443  return iscore;
444  }else{
445  memcpy(pbbak, p_buffer, p_len);
446  s->c= pc;
447  s->c.bytestream_start= pbbak_start;
448  s->c.bytestream= pbbak + p_len;
449  set_blocks(s, level, x, y, pl, pcb, pcr, mx, my, best_ref, 0);
450  memcpy(s->block_state, p_state, sizeof(s->block_state));
451  return score;
452  }
453 }
454 
455 static void encode_q_branch2(SnowContext *s, int level, int x, int y){
456  const int w= s->b_width << s->block_max_depth;
457  const int rem_depth= s->block_max_depth - level;
458  const int index= (x + y*w) << rem_depth;
459  int trx= (x+1)<<rem_depth;
460  BlockNode *b= &s->block[index];
461  const BlockNode *left = x ? &s->block[index-1] : &null_block;
462  const BlockNode *top = y ? &s->block[index-w] : &null_block;
463  const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
464  const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
465  int pl = left->color[0];
466  int pcb= left->color[1];
467  int pcr= left->color[2];
468  int pmx, pmy;
469  int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
470  int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 16*!!b->ref;
471  int my_context= av_log2(2*FFABS(left->my - top->my)) + 16*!!b->ref;
472  int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
473 
474  if(s->keyframe){
475  set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
476  return;
477  }
478 
479  if(level!=s->block_max_depth){
480  if(same_block(b,b+1) && same_block(b,b+w) && same_block(b,b+w+1)){
481  put_rac(&s->c, &s->block_state[4 + s_context], 1);
482  }else{
483  put_rac(&s->c, &s->block_state[4 + s_context], 0);
484  encode_q_branch2(s, level+1, 2*x+0, 2*y+0);
485  encode_q_branch2(s, level+1, 2*x+1, 2*y+0);
486  encode_q_branch2(s, level+1, 2*x+0, 2*y+1);
487  encode_q_branch2(s, level+1, 2*x+1, 2*y+1);
488  return;
489  }
490  }
491  if(b->type & BLOCK_INTRA){
492  pred_mv(s, &pmx, &pmy, 0, left, top, tr);
493  put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 1);
494  put_symbol(&s->c, &s->block_state[32], b->color[0]-pl , 1);
495  if (s->nb_planes > 2) {
496  put_symbol(&s->c, &s->block_state[64], b->color[1]-pcb, 1);
497  put_symbol(&s->c, &s->block_state[96], b->color[2]-pcr, 1);
498  }
499  set_blocks(s, level, x, y, b->color[0], b->color[1], b->color[2], pmx, pmy, 0, BLOCK_INTRA);
500  }else{
501  pred_mv(s, &pmx, &pmy, b->ref, left, top, tr);
502  put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 0);
503  if(s->ref_frames > 1)
504  put_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], b->ref, 0);
505  put_symbol(&s->c, &s->block_state[128 + 32*mx_context], b->mx - pmx, 1);
506  put_symbol(&s->c, &s->block_state[128 + 32*my_context], b->my - pmy, 1);
507  set_blocks(s, level, x, y, pl, pcb, pcr, b->mx, b->my, b->ref, 0);
508  }
509 }
510 
511 static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){
512  int i, x2, y2;
513  Plane *p= &s->plane[plane_index];
514  const int block_size = MB_SIZE >> s->block_max_depth;
515  const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
516  const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
517  const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
518  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
519  const int ref_stride= s->current_picture->linesize[plane_index];
520  uint8_t *src= s-> input_picture->data[plane_index];
521  IDWTELEM *dst= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4; //FIXME change to unsigned
522  const int b_stride = s->b_width << s->block_max_depth;
523  const int w= p->width;
524  const int h= p->height;
525  int index= mb_x + mb_y*b_stride;
526  BlockNode *b= &s->block[index];
527  BlockNode backup= *b;
528  int ab=0;
529  int aa=0;
530 
531  av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc stuff above
532 
533  b->type|= BLOCK_INTRA;
534  b->color[plane_index]= 0;
535  memset(dst, 0, obmc_stride*obmc_stride*sizeof(IDWTELEM));
536 
537  for(i=0; i<4; i++){
538  int mb_x2= mb_x + (i &1) - 1;
539  int mb_y2= mb_y + (i>>1) - 1;
540  int x= block_w*mb_x2 + block_w/2;
541  int y= block_h*mb_y2 + block_h/2;
542 
543  add_yblock(s, 0, NULL, dst + (i&1)*block_w + (i>>1)*obmc_stride*block_h, NULL, obmc,
544  x, y, block_w, block_h, w, h, obmc_stride, ref_stride, obmc_stride, mb_x2, mb_y2, 0, 0, plane_index);
545 
546  for(y2= FFMAX(y, 0); y2<FFMIN(h, y+block_h); y2++){
547  for(x2= FFMAX(x, 0); x2<FFMIN(w, x+block_w); x2++){
548  int index= x2-(block_w*mb_x - block_w/2) + (y2-(block_h*mb_y - block_h/2))*obmc_stride;
549  int obmc_v= obmc[index];
550  int d;
551  if(y<0) obmc_v += obmc[index + block_h*obmc_stride];
552  if(x<0) obmc_v += obmc[index + block_w];
553  if(y+block_h>h) obmc_v += obmc[index - block_h*obmc_stride];
554  if(x+block_w>w) obmc_v += obmc[index - block_w];
555  //FIXME precalculate this or simplify it somehow else
556 
557  d = -dst[index] + (1<<(FRAC_BITS-1));
558  dst[index] = d;
559  ab += (src[x2 + y2*ref_stride] - (d>>FRAC_BITS)) * obmc_v;
560  aa += obmc_v * obmc_v; //FIXME precalculate this
561  }
562  }
563  }
564  *b= backup;
565 
566  return av_clip_uint8( ROUNDED_DIV(ab<<LOG2_OBMC_MAX, aa) ); //FIXME we should not need clipping
567 }
568 
569 static inline int get_block_bits(SnowContext *s, int x, int y, int w){
570  const int b_stride = s->b_width << s->block_max_depth;
571  const int b_height = s->b_height<< s->block_max_depth;
572  int index= x + y*b_stride;
573  const BlockNode *b = &s->block[index];
574  const BlockNode *left = x ? &s->block[index-1] : &null_block;
575  const BlockNode *top = y ? &s->block[index-b_stride] : &null_block;
576  const BlockNode *tl = y && x ? &s->block[index-b_stride-1] : left;
577  const BlockNode *tr = y && x+w<b_stride ? &s->block[index-b_stride+w] : tl;
578  int dmx, dmy;
579 // int mx_context= av_log2(2*FFABS(left->mx - top->mx));
580 // int my_context= av_log2(2*FFABS(left->my - top->my));
581 
582  if(x<0 || x>=b_stride || y>=b_height)
583  return 0;
584 /*
585 1 0 0
586 01X 1-2 1
587 001XX 3-6 2-3
588 0001XXX 7-14 4-7
589 00001XXXX 15-30 8-15
590 */
591 //FIXME try accurate rate
592 //FIXME intra and inter predictors if surrounding blocks are not the same type
593  if(b->type & BLOCK_INTRA){
594  return 3+2*( av_log2(2*FFABS(left->color[0] - b->color[0]))
595  + av_log2(2*FFABS(left->color[1] - b->color[1]))
596  + av_log2(2*FFABS(left->color[2] - b->color[2])));
597  }else{
598  pred_mv(s, &dmx, &dmy, b->ref, left, top, tr);
599  dmx-= b->mx;
600  dmy-= b->my;
601  return 2*(1 + av_log2(2*FFABS(dmx)) //FIXME kill the 2* can be merged in lambda
602  + av_log2(2*FFABS(dmy))
603  + av_log2(2*b->ref));
604  }
605 }
606 
607 static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, uint8_t (*obmc_edged)[MB_SIZE * 2]){
608  Plane *p= &s->plane[plane_index];
609  const int block_size = MB_SIZE >> s->block_max_depth;
610  const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
611  const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
612  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
613  const int ref_stride= s->current_picture->linesize[plane_index];
614  uint8_t *dst= s->current_picture->data[plane_index];
615  uint8_t *src= s-> input_picture->data[plane_index];
616  IDWTELEM *pred= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4;
617  uint8_t *cur = s->scratchbuf;
619  const int b_stride = s->b_width << s->block_max_depth;
620  const int b_height = s->b_height<< s->block_max_depth;
621  const int w= p->width;
622  const int h= p->height;
623  int distortion;
624  int rate= 0;
625  const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
626  int sx= block_w*mb_x - block_w/2;
627  int sy= block_h*mb_y - block_h/2;
628  int x0= FFMAX(0,-sx);
629  int y0= FFMAX(0,-sy);
630  int x1= FFMIN(block_w*2, w-sx);
631  int y1= FFMIN(block_h*2, h-sy);
632  int i,x,y;
633 
634  av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below chckinhg only block_w
635 
636  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);
637 
638  for(y=y0; y<y1; y++){
639  const uint8_t *obmc1= obmc_edged[y];
640  const IDWTELEM *pred1 = pred + y*obmc_stride;
641  uint8_t *cur1 = cur + y*ref_stride;
642  uint8_t *dst1 = dst + sx + (sy+y)*ref_stride;
643  for(x=x0; x<x1; x++){
644 #if FRAC_BITS >= LOG2_OBMC_MAX
645  int v = (cur1[x] * obmc1[x]) << (FRAC_BITS - LOG2_OBMC_MAX);
646 #else
647  int v = (cur1[x] * obmc1[x] + (1<<(LOG2_OBMC_MAX - FRAC_BITS-1))) >> (LOG2_OBMC_MAX - FRAC_BITS);
648 #endif
649  v = (v + pred1[x]) >> FRAC_BITS;
650  if(v&(~255)) v= ~(v>>31);
651  dst1[x] = v;
652  }
653  }
654 
655  /* copy the regions where obmc[] = (uint8_t)256 */
656  if(LOG2_OBMC_MAX == 8
657  && (mb_x == 0 || mb_x == b_stride-1)
658  && (mb_y == 0 || mb_y == b_height-1)){
659  if(mb_x == 0)
660  x1 = block_w;
661  else
662  x0 = block_w;
663  if(mb_y == 0)
664  y1 = block_h;
665  else
666  y0 = block_h;
667  for(y=y0; y<y1; y++)
668  memcpy(dst + sx+x0 + (sy+y)*ref_stride, cur + x0 + y*ref_stride, x1-x0);
669  }
670 
671  if(block_w==16){
672  /* FIXME rearrange dsputil to fit 32x32 cmp functions */
673  /* FIXME check alignment of the cmp wavelet vs the encoding wavelet */
674  /* FIXME cmps overlap but do not cover the wavelet's whole support.
675  * So improving the score of one block is not strictly guaranteed
676  * to improve the score of the whole frame, thus iterative motion
677  * estimation does not always converge. */
678  if(s->avctx->me_cmp == FF_CMP_W97)
679  distortion = ff_w97_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
680  else if(s->avctx->me_cmp == FF_CMP_W53)
681  distortion = ff_w53_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
682  else{
683  distortion = 0;
684  for(i=0; i<4; i++){
685  int off = sx+16*(i&1) + (sy+16*(i>>1))*ref_stride;
686  distortion += s->mecc.me_cmp[0](&s->m, src + off, dst + off, ref_stride, 16);
687  }
688  }
689  }else{
690  av_assert2(block_w==8);
691  distortion = s->mecc.me_cmp[0](&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, block_w*2);
692  }
693 
694  if(plane_index==0){
695  for(i=0; i<4; i++){
696 /* ..RRr
697  * .RXx.
698  * rxx..
699  */
700  rate += get_block_bits(s, mb_x + (i&1) - (i>>1), mb_y + (i>>1), 1);
701  }
702  if(mb_x == b_stride-2)
703  rate += get_block_bits(s, mb_x + 1, mb_y + 1, 1);
704  }
705  return distortion + rate*penalty_factor;
706 }
707 
708 static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){
709  int i, y2;
710  Plane *p= &s->plane[plane_index];
711  const int block_size = MB_SIZE >> s->block_max_depth;
712  const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
713  const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
714  const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
715  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
716  const int ref_stride= s->current_picture->linesize[plane_index];
717  uint8_t *dst= s->current_picture->data[plane_index];
718  uint8_t *src= s-> input_picture->data[plane_index];
719  //FIXME zero_dst is const but add_yblock changes dst if add is 0 (this is never the case for dst=zero_dst
720  // const has only been removed from zero_dst to suppress a warning
721  static IDWTELEM zero_dst[4096]; //FIXME
722  const int b_stride = s->b_width << s->block_max_depth;
723  const int w= p->width;
724  const int h= p->height;
725  int distortion= 0;
726  int rate= 0;
727  const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
728 
729  av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below
730 
731  for(i=0; i<9; i++){
732  int mb_x2= mb_x + (i%3) - 1;
733  int mb_y2= mb_y + (i/3) - 1;
734  int x= block_w*mb_x2 + block_w/2;
735  int y= block_h*mb_y2 + block_h/2;
736 
737  add_yblock(s, 0, NULL, zero_dst, dst, obmc,
738  x, y, block_w, block_h, w, h, /*dst_stride*/0, ref_stride, obmc_stride, mb_x2, mb_y2, 1, 1, plane_index);
739 
740  //FIXME find a cleaner/simpler way to skip the outside stuff
741  for(y2= y; y2<0; y2++)
742  memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
743  for(y2= h; y2<y+block_h; y2++)
744  memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
745  if(x<0){
746  for(y2= y; y2<y+block_h; y2++)
747  memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, -x);
748  }
749  if(x+block_w > w){
750  for(y2= y; y2<y+block_h; y2++)
751  memcpy(dst + w + y2*ref_stride, src + w + y2*ref_stride, x+block_w - w);
752  }
753 
754  av_assert1(block_w== 8 || block_w==16);
755  distortion += s->mecc.me_cmp[block_w==8](&s->m, src + x + y*ref_stride, dst + x + y*ref_stride, ref_stride, block_h);
756  }
757 
758  if(plane_index==0){
759  BlockNode *b= &s->block[mb_x+mb_y*b_stride];
760  int merged= same_block(b,b+1) && same_block(b,b+b_stride) && same_block(b,b+b_stride+1);
761 
762 /* ..RRRr
763  * .RXXx.
764  * .RXXx.
765  * rxxx.
766  */
767  if(merged)
768  rate = get_block_bits(s, mb_x, mb_y, 2);
769  for(i=merged?4:0; i<9; i++){
770  static const int dxy[9][2] = {{0,0},{1,0},{0,1},{1,1},{2,0},{2,1},{-1,2},{0,2},{1,2}};
771  rate += get_block_bits(s, mb_x + dxy[i][0], mb_y + dxy[i][1], 1);
772  }
773  }
774  return distortion + rate*penalty_factor;
775 }
776 
777 static int encode_subband_c0run(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
778  const int w= b->width;
779  const int h= b->height;
780  int x, y;
781 
782  if(1){
783  int run=0;
784  int *runs = s->run_buffer;
785  int run_index=0;
786  int max_index;
787 
788  for(y=0; y<h; y++){
789  for(x=0; x<w; x++){
790  int v, p=0;
791  int /*ll=0, */l=0, lt=0, t=0, rt=0;
792  v= src[x + y*stride];
793 
794  if(y){
795  t= src[x + (y-1)*stride];
796  if(x){
797  lt= src[x - 1 + (y-1)*stride];
798  }
799  if(x + 1 < w){
800  rt= src[x + 1 + (y-1)*stride];
801  }
802  }
803  if(x){
804  l= src[x - 1 + y*stride];
805  /*if(x > 1){
806  if(orientation==1) ll= src[y + (x-2)*stride];
807  else ll= src[x - 2 + y*stride];
808  }*/
809  }
810  if(parent){
811  int px= x>>1;
812  int py= y>>1;
813  if(px<b->parent->width && py<b->parent->height)
814  p= parent[px + py*2*stride];
815  }
816  if(!(/*ll|*/l|lt|t|rt|p)){
817  if(v){
818  runs[run_index++]= run;
819  run=0;
820  }else{
821  run++;
822  }
823  }
824  }
825  }
826  max_index= run_index;
827  runs[run_index++]= run;
828  run_index=0;
829  run= runs[run_index++];
830 
831  put_symbol2(&s->c, b->state[30], max_index, 0);
832  if(run_index <= max_index)
833  put_symbol2(&s->c, b->state[1], run, 3);
834 
835  for(y=0; y<h; y++){
836  if(s->c.bytestream_end - s->c.bytestream < w*40){
837  av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
838  return AVERROR(ENOMEM);
839  }
840  for(x=0; x<w; x++){
841  int v, p=0;
842  int /*ll=0, */l=0, lt=0, t=0, rt=0;
843  v= src[x + y*stride];
844 
845  if(y){
846  t= src[x + (y-1)*stride];
847  if(x){
848  lt= src[x - 1 + (y-1)*stride];
849  }
850  if(x + 1 < w){
851  rt= src[x + 1 + (y-1)*stride];
852  }
853  }
854  if(x){
855  l= src[x - 1 + y*stride];
856  /*if(x > 1){
857  if(orientation==1) ll= src[y + (x-2)*stride];
858  else ll= src[x - 2 + y*stride];
859  }*/
860  }
861  if(parent){
862  int px= x>>1;
863  int py= y>>1;
864  if(px<b->parent->width && py<b->parent->height)
865  p= parent[px + py*2*stride];
866  }
867  if(/*ll|*/l|lt|t|rt|p){
868  int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
869 
870  put_rac(&s->c, &b->state[0][context], !!v);
871  }else{
872  if(!run){
873  run= runs[run_index++];
874 
875  if(run_index <= max_index)
876  put_symbol2(&s->c, b->state[1], run, 3);
877  av_assert2(v);
878  }else{
879  run--;
880  av_assert2(!v);
881  }
882  }
883  if(v){
884  int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
885  int l2= 2*FFABS(l) + (l<0);
886  int t2= 2*FFABS(t) + (t<0);
887 
888  put_symbol2(&s->c, b->state[context + 2], FFABS(v)-1, context-4);
889  put_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l2&0xFF] + 3*ff_quant3bA[t2&0xFF]], v<0);
890  }
891  }
892  }
893  }
894  return 0;
895 }
896 
897 static int encode_subband(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
898 // encode_subband_qtree(s, b, src, parent, stride, orientation);
899 // encode_subband_z0run(s, b, src, parent, stride, orientation);
900  return encode_subband_c0run(s, b, src, parent, stride, orientation);
901 // encode_subband_dzr(s, b, src, parent, stride, orientation);
902 }
903 
904 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){
905  const int b_stride= s->b_width << s->block_max_depth;
906  BlockNode *block= &s->block[mb_x + mb_y * b_stride];
907  BlockNode backup= *block;
908  unsigned value;
909  int rd, index;
910 
911  av_assert2(mb_x>=0 && mb_y>=0);
912  av_assert2(mb_x<b_stride);
913 
914  if(intra){
915  block->color[0] = p[0];
916  block->color[1] = p[1];
917  block->color[2] = p[2];
918  block->type |= BLOCK_INTRA;
919  }else{
920  index= (p[0] + 31*p[1]) & (ME_CACHE_SIZE-1);
921  value= s->me_cache_generation + (p[0]>>10) + (p[1]<<6) + (block->ref<<12);
922  if(s->me_cache[index] == value)
923  return 0;
924  s->me_cache[index]= value;
925 
926  block->mx= p[0];
927  block->my= p[1];
928  block->type &= ~BLOCK_INTRA;
929  }
930 
931  rd= get_block_rd(s, mb_x, mb_y, 0, obmc_edged) + s->intra_penalty * !!intra;
932 
933 //FIXME chroma
934  if(rd < *best_rd){
935  *best_rd= rd;
936  return 1;
937  }else{
938  *block= backup;
939  return 0;
940  }
941 }
942 
943 /* special case for int[2] args we discard afterwards,
944  * fixes compilation problem with gcc 2.95 */
945 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){
946  int p[2] = {p0, p1};
947  return check_block(s, mb_x, mb_y, p, 0, obmc_edged, best_rd);
948 }
949 
950 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){
951  const int b_stride= s->b_width << s->block_max_depth;
952  BlockNode *block= &s->block[mb_x + mb_y * b_stride];
953  BlockNode backup[4];
954  unsigned value;
955  int rd, index;
956 
957  /* We don't initialize backup[] during variable declaration, because
958  * that fails to compile on MSVC: "cannot convert from 'BlockNode' to
959  * 'int16_t'". */
960  backup[0] = block[0];
961  backup[1] = block[1];
962  backup[2] = block[b_stride];
963  backup[3] = block[b_stride + 1];
964 
965  av_assert2(mb_x>=0 && mb_y>=0);
966  av_assert2(mb_x<b_stride);
967  av_assert2(((mb_x|mb_y)&1) == 0);
968 
969  index= (p0 + 31*p1) & (ME_CACHE_SIZE-1);
970  value= s->me_cache_generation + (p0>>10) + (p1<<6) + (block->ref<<12);
971  if(s->me_cache[index] == value)
972  return 0;
973  s->me_cache[index]= value;
974 
975  block->mx= p0;
976  block->my= p1;
977  block->ref= ref;
978  block->type &= ~BLOCK_INTRA;
979  block[1]= block[b_stride]= block[b_stride+1]= *block;
980 
981  rd= get_4block_rd(s, mb_x, mb_y, 0);
982 
983 //FIXME chroma
984  if(rd < *best_rd){
985  *best_rd= rd;
986  return 1;
987  }else{
988  block[0]= backup[0];
989  block[1]= backup[1];
990  block[b_stride]= backup[2];
991  block[b_stride+1]= backup[3];
992  return 0;
993  }
994 }
995 
996 static void iterative_me(SnowContext *s){
997  int pass, mb_x, mb_y;
998  const int b_width = s->b_width << s->block_max_depth;
999  const int b_height= s->b_height << s->block_max_depth;
1000  const int b_stride= b_width;
1001  int color[3];
1002 
1003  {
1004  RangeCoder r = s->c;
1005  uint8_t state[sizeof(s->block_state)];
1006  memcpy(state, s->block_state, sizeof(s->block_state));
1007  for(mb_y= 0; mb_y<s->b_height; mb_y++)
1008  for(mb_x= 0; mb_x<s->b_width; mb_x++)
1009  encode_q_branch(s, 0, mb_x, mb_y);
1010  s->c = r;
1011  memcpy(s->block_state, state, sizeof(s->block_state));
1012  }
1013 
1014  for(pass=0; pass<25; pass++){
1015  int change= 0;
1016 
1017  for(mb_y= 0; mb_y<b_height; mb_y++){
1018  for(mb_x= 0; mb_x<b_width; mb_x++){
1019  int dia_change, i, j, ref;
1020  int best_rd= INT_MAX, ref_rd;
1021  BlockNode backup, ref_b;
1022  const int index= mb_x + mb_y * b_stride;
1023  BlockNode *block= &s->block[index];
1024  BlockNode *tb = mb_y ? &s->block[index-b_stride ] : NULL;
1025  BlockNode *lb = mb_x ? &s->block[index -1] : NULL;
1026  BlockNode *rb = mb_x+1<b_width ? &s->block[index +1] : NULL;
1027  BlockNode *bb = mb_y+1<b_height ? &s->block[index+b_stride ] : NULL;
1028  BlockNode *tlb= mb_x && mb_y ? &s->block[index-b_stride-1] : NULL;
1029  BlockNode *trb= mb_x+1<b_width && mb_y ? &s->block[index-b_stride+1] : NULL;
1030  BlockNode *blb= mb_x && mb_y+1<b_height ? &s->block[index+b_stride-1] : NULL;
1031  BlockNode *brb= mb_x+1<b_width && mb_y+1<b_height ? &s->block[index+b_stride+1] : NULL;
1032  const int b_w= (MB_SIZE >> s->block_max_depth);
1033  uint8_t obmc_edged[MB_SIZE * 2][MB_SIZE * 2];
1034 
1035  if(pass && (block->type & BLOCK_OPT))
1036  continue;
1037  block->type |= BLOCK_OPT;
1038 
1039  backup= *block;
1040 
1041  if(!s->me_cache_generation)
1042  memset(s->me_cache, 0, sizeof(s->me_cache));
1043  s->me_cache_generation += 1<<22;
1044 
1045  //FIXME precalculate
1046  {
1047  int x, y;
1048  for (y = 0; y < b_w * 2; y++)
1049  memcpy(obmc_edged[y], ff_obmc_tab[s->block_max_depth] + y * b_w * 2, b_w * 2);
1050  if(mb_x==0)
1051  for(y=0; y<b_w*2; y++)
1052  memset(obmc_edged[y], obmc_edged[y][0] + obmc_edged[y][b_w-1], b_w);
1053  if(mb_x==b_stride-1)
1054  for(y=0; y<b_w*2; y++)
1055  memset(obmc_edged[y]+b_w, obmc_edged[y][b_w] + obmc_edged[y][b_w*2-1], b_w);
1056  if(mb_y==0){
1057  for(x=0; x<b_w*2; x++)
1058  obmc_edged[0][x] += obmc_edged[b_w-1][x];
1059  for(y=1; y<b_w; y++)
1060  memcpy(obmc_edged[y], obmc_edged[0], b_w*2);
1061  }
1062  if(mb_y==b_height-1){
1063  for(x=0; x<b_w*2; x++)
1064  obmc_edged[b_w*2-1][x] += obmc_edged[b_w][x];
1065  for(y=b_w; y<b_w*2-1; y++)
1066  memcpy(obmc_edged[y], obmc_edged[b_w*2-1], b_w*2);
1067  }
1068  }
1069 
1070  //skip stuff outside the picture
1071  if(mb_x==0 || mb_y==0 || mb_x==b_width-1 || mb_y==b_height-1){
1072  uint8_t *src= s-> input_picture->data[0];
1073  uint8_t *dst= s->current_picture->data[0];
1074  const int stride= s->current_picture->linesize[0];
1075  const int block_w= MB_SIZE >> s->block_max_depth;
1076  const int block_h= MB_SIZE >> s->block_max_depth;
1077  const int sx= block_w*mb_x - block_w/2;
1078  const int sy= block_h*mb_y - block_h/2;
1079  const int w= s->plane[0].width;
1080  const int h= s->plane[0].height;
1081  int y;
1082 
1083  for(y=sy; y<0; y++)
1084  memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1085  for(y=h; y<sy+block_h*2; y++)
1086  memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1087  if(sx<0){
1088  for(y=sy; y<sy+block_h*2; y++)
1089  memcpy(dst + sx + y*stride, src + sx + y*stride, -sx);
1090  }
1091  if(sx+block_w*2 > w){
1092  for(y=sy; y<sy+block_h*2; y++)
1093  memcpy(dst + w + y*stride, src + w + y*stride, sx+block_w*2 - w);
1094  }
1095  }
1096 
1097  // intra(black) = neighbors' contribution to the current block
1098  for(i=0; i < s->nb_planes; i++)
1099  color[i]= get_dc(s, mb_x, mb_y, i);
1100 
1101  // get previous score (cannot be cached due to OBMC)
1102  if(pass > 0 && (block->type&BLOCK_INTRA)){
1103  int color0[3]= {block->color[0], block->color[1], block->color[2]};
1104  check_block(s, mb_x, mb_y, color0, 1, obmc_edged, &best_rd);
1105  }else
1106  check_block_inter(s, mb_x, mb_y, block->mx, block->my, obmc_edged, &best_rd);
1107 
1108  ref_b= *block;
1109  ref_rd= best_rd;
1110  for(ref=0; ref < s->ref_frames; ref++){
1111  int16_t (*mvr)[2]= &s->ref_mvs[ref][index];
1112  if(s->ref_scores[ref][index] > s->ref_scores[ref_b.ref][index]*3/2) //FIXME tune threshold
1113  continue;
1114  block->ref= ref;
1115  best_rd= INT_MAX;
1116 
1117  check_block_inter(s, mb_x, mb_y, mvr[0][0], mvr[0][1], obmc_edged, &best_rd);
1118  check_block_inter(s, mb_x, mb_y, 0, 0, obmc_edged, &best_rd);
1119  if(tb)
1120  check_block_inter(s, mb_x, mb_y, mvr[-b_stride][0], mvr[-b_stride][1], obmc_edged, &best_rd);
1121  if(lb)
1122  check_block_inter(s, mb_x, mb_y, mvr[-1][0], mvr[-1][1], obmc_edged, &best_rd);
1123  if(rb)
1124  check_block_inter(s, mb_x, mb_y, mvr[1][0], mvr[1][1], obmc_edged, &best_rd);
1125  if(bb)
1126  check_block_inter(s, mb_x, mb_y, mvr[b_stride][0], mvr[b_stride][1], obmc_edged, &best_rd);
1127 
1128  /* fullpel ME */
1129  //FIXME avoid subpel interpolation / round to nearest integer
1130  do{
1131  int newx = block->mx;
1132  int newy = block->my;
1133  int dia_size = s->iterative_dia_size ? s->iterative_dia_size : FFMAX(s->avctx->dia_size, 1);
1134  dia_change=0;
1135  for(i=0; i < dia_size; i++){
1136  for(j=0; j<i; j++){
1137  dia_change |= check_block_inter(s, mb_x, mb_y, newx+4*(i-j), newy+(4*j), obmc_edged, &best_rd);
1138  dia_change |= check_block_inter(s, mb_x, mb_y, newx-4*(i-j), newy-(4*j), obmc_edged, &best_rd);
1139  dia_change |= check_block_inter(s, mb_x, mb_y, newx-(4*j), newy+4*(i-j), obmc_edged, &best_rd);
1140  dia_change |= check_block_inter(s, mb_x, mb_y, newx+(4*j), newy-4*(i-j), obmc_edged, &best_rd);
1141  }
1142  }
1143  }while(dia_change);
1144  /* subpel ME */
1145  do{
1146  static const int square[8][2]= {{+1, 0},{-1, 0},{ 0,+1},{ 0,-1},{+1,+1},{-1,-1},{+1,-1},{-1,+1},};
1147  dia_change=0;
1148  for(i=0; i<8; i++)
1149  dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+square[i][0], block->my+square[i][1], obmc_edged, &best_rd);
1150  }while(dia_change);
1151  //FIXME or try the standard 2 pass qpel or similar
1152 
1153  mvr[0][0]= block->mx;
1154  mvr[0][1]= block->my;
1155  if(ref_rd > best_rd){
1156  ref_rd= best_rd;
1157  ref_b= *block;
1158  }
1159  }
1160  best_rd= ref_rd;
1161  *block= ref_b;
1162  check_block(s, mb_x, mb_y, color, 1, obmc_edged, &best_rd);
1163  //FIXME RD style color selection
1164  if(!same_block(block, &backup)){
1165  if(tb ) tb ->type &= ~BLOCK_OPT;
1166  if(lb ) lb ->type &= ~BLOCK_OPT;
1167  if(rb ) rb ->type &= ~BLOCK_OPT;
1168  if(bb ) bb ->type &= ~BLOCK_OPT;
1169  if(tlb) tlb->type &= ~BLOCK_OPT;
1170  if(trb) trb->type &= ~BLOCK_OPT;
1171  if(blb) blb->type &= ~BLOCK_OPT;
1172  if(brb) brb->type &= ~BLOCK_OPT;
1173  change ++;
1174  }
1175  }
1176  }
1177  av_log(s->avctx, AV_LOG_DEBUG, "pass:%d changed:%d\n", pass, change);
1178  if(!change)
1179  break;
1180  }
1181 
1182  if(s->block_max_depth == 1){
1183  int change= 0;
1184  for(mb_y= 0; mb_y<b_height; mb_y+=2){
1185  for(mb_x= 0; mb_x<b_width; mb_x+=2){
1186  int i;
1187  int best_rd, init_rd;
1188  const int index= mb_x + mb_y * b_stride;
1189  BlockNode *b[4];
1190 
1191  b[0]= &s->block[index];
1192  b[1]= b[0]+1;
1193  b[2]= b[0]+b_stride;
1194  b[3]= b[2]+1;
1195  if(same_block(b[0], b[1]) &&
1196  same_block(b[0], b[2]) &&
1197  same_block(b[0], b[3]))
1198  continue;
1199 
1200  if(!s->me_cache_generation)
1201  memset(s->me_cache, 0, sizeof(s->me_cache));
1202  s->me_cache_generation += 1<<22;
1203 
1204  init_rd= best_rd= get_4block_rd(s, mb_x, mb_y, 0);
1205 
1206  //FIXME more multiref search?
1207  check_4block_inter(s, mb_x, mb_y,
1208  (b[0]->mx + b[1]->mx + b[2]->mx + b[3]->mx + 2) >> 2,
1209  (b[0]->my + b[1]->my + b[2]->my + b[3]->my + 2) >> 2, 0, &best_rd);
1210 
1211  for(i=0; i<4; i++)
1212  if(!(b[i]->type&BLOCK_INTRA))
1213  check_4block_inter(s, mb_x, mb_y, b[i]->mx, b[i]->my, b[i]->ref, &best_rd);
1214 
1215  if(init_rd != best_rd)
1216  change++;
1217  }
1218  }
1219  av_log(s->avctx, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4);
1220  }
1221 }
1222 
1223 static void encode_blocks(SnowContext *s, int search){
1224  int x, y;
1225  int w= s->b_width;
1226  int h= s->b_height;
1227 
1228  if(s->motion_est == FF_ME_ITER && !s->keyframe && search)
1229  iterative_me(s);
1230 
1231  for(y=0; y<h; y++){
1232  if(s->c.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit
1233  av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
1234  return;
1235  }
1236  for(x=0; x<w; x++){
1237  if(s->motion_est == FF_ME_ITER || !search)
1238  encode_q_branch2(s, 0, x, y);
1239  else
1240  encode_q_branch (s, 0, x, y);
1241  }
1242  }
1243 }
1244 
1245 static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias){
1246  const int w= b->width;
1247  const int h= b->height;
1248  const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1249  const int qmul= ff_qexp[qlog&(QROOT-1)]<<((qlog>>QSHIFT) + ENCODER_EXTRA_BITS);
1250  int x,y, thres1, thres2;
1251 
1252  if(s->qlog == LOSSLESS_QLOG){
1253  for(y=0; y<h; y++)
1254  for(x=0; x<w; x++)
1255  dst[x + y*stride]= src[x + y*stride];
1256  return;
1257  }
1258 
1259  bias= bias ? 0 : (3*qmul)>>3;
1260  thres1= ((qmul - bias)>>QEXPSHIFT) - 1;
1261  thres2= 2*thres1;
1262 
1263  if(!bias){
1264  for(y=0; y<h; y++){
1265  for(x=0; x<w; x++){
1266  int i= src[x + y*stride];
1267 
1268  if((unsigned)(i+thres1) > thres2){
1269  if(i>=0){
1270  i<<= QEXPSHIFT;
1271  i/= qmul; //FIXME optimize
1272  dst[x + y*stride]= i;
1273  }else{
1274  i= -i;
1275  i<<= QEXPSHIFT;
1276  i/= qmul; //FIXME optimize
1277  dst[x + y*stride]= -i;
1278  }
1279  }else
1280  dst[x + y*stride]= 0;
1281  }
1282  }
1283  }else{
1284  for(y=0; y<h; y++){
1285  for(x=0; x<w; x++){
1286  int i= src[x + y*stride];
1287 
1288  if((unsigned)(i+thres1) > thres2){
1289  if(i>=0){
1290  i<<= QEXPSHIFT;
1291  i= (i + bias) / qmul; //FIXME optimize
1292  dst[x + y*stride]= i;
1293  }else{
1294  i= -i;
1295  i<<= QEXPSHIFT;
1296  i= (i + bias) / qmul; //FIXME optimize
1297  dst[x + y*stride]= -i;
1298  }
1299  }else
1300  dst[x + y*stride]= 0;
1301  }
1302  }
1303  }
1304 }
1305 
1306 static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride){
1307  const int w= b->width;
1308  const int h= b->height;
1309  const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1310  const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1311  const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
1312  int x,y;
1313 
1314  if(s->qlog == LOSSLESS_QLOG) return;
1315 
1316  for(y=0; y<h; y++){
1317  for(x=0; x<w; x++){
1318  int i= src[x + y*stride];
1319  if(i<0){
1320  src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias
1321  }else if(i>0){
1322  src[x + y*stride]= (( i*qmul + qadd)>>(QEXPSHIFT));
1323  }
1324  }
1325  }
1326 }
1327 
1328 static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1329  const int w= b->width;
1330  const int h= b->height;
1331  int x,y;
1332 
1333  for(y=h-1; y>=0; y--){
1334  for(x=w-1; x>=0; x--){
1335  int i= x + y*stride;
1336 
1337  if(x){
1338  if(use_median){
1339  if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1340  else src[i] -= src[i - 1];
1341  }else{
1342  if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1343  else src[i] -= src[i - 1];
1344  }
1345  }else{
1346  if(y) src[i] -= src[i - stride];
1347  }
1348  }
1349  }
1350 }
1351 
1352 static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1353  const int w= b->width;
1354  const int h= b->height;
1355  int x,y;
1356 
1357  for(y=0; y<h; y++){
1358  for(x=0; x<w; x++){
1359  int i= x + y*stride;
1360 
1361  if(x){
1362  if(use_median){
1363  if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1364  else src[i] += src[i - 1];
1365  }else{
1366  if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1367  else src[i] += src[i - 1];
1368  }
1369  }else{
1370  if(y) src[i] += src[i - stride];
1371  }
1372  }
1373  }
1374 }
1375 
1376 static void encode_qlogs(SnowContext *s){
1377  int plane_index, level, orientation;
1378 
1379  for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1380  for(level=0; level<s->spatial_decomposition_count; level++){
1381  for(orientation=level ? 1:0; orientation<4; orientation++){
1382  if(orientation==2) continue;
1383  put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1);
1384  }
1385  }
1386  }
1387 }
1388 
1389 static void encode_header(SnowContext *s){
1390  int plane_index, i;
1391  uint8_t kstate[32];
1392 
1393  memset(kstate, MID_STATE, sizeof(kstate));
1394 
1395  put_rac(&s->c, kstate, s->keyframe);
1396  if(s->keyframe || s->always_reset){
1399  s->last_qlog=
1400  s->last_qbias=
1401  s->last_mv_scale=
1402  s->last_block_max_depth= 0;
1403  for(plane_index=0; plane_index<2; plane_index++){
1404  Plane *p= &s->plane[plane_index];
1405  p->last_htaps=0;
1406  p->last_diag_mc=0;
1407  memset(p->last_hcoeff, 0, sizeof(p->last_hcoeff));
1408  }
1409  }
1410  if(s->keyframe){
1411  put_symbol(&s->c, s->header_state, s->version, 0);
1412  put_rac(&s->c, s->header_state, s->always_reset);
1416  put_symbol(&s->c, s->header_state, s->colorspace_type, 0);
1417  if (s->nb_planes > 2) {
1418  put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0);
1419  put_symbol(&s->c, s->header_state, s->chroma_v_shift, 0);
1420  }
1422 // put_rac(&s->c, s->header_state, s->rate_scalability);
1423  put_symbol(&s->c, s->header_state, s->max_ref_frames-1, 0);
1424 
1425  encode_qlogs(s);
1426  }
1427 
1428  if(!s->keyframe){
1429  int update_mc=0;
1430  for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1431  Plane *p= &s->plane[plane_index];
1432  update_mc |= p->last_htaps != p->htaps;
1433  update_mc |= p->last_diag_mc != p->diag_mc;
1434  update_mc |= !!memcmp(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1435  }
1436  put_rac(&s->c, s->header_state, update_mc);
1437  if(update_mc){
1438  for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1439  Plane *p= &s->plane[plane_index];
1440  put_rac(&s->c, s->header_state, p->diag_mc);
1441  put_symbol(&s->c, s->header_state, p->htaps/2-1, 0);
1442  for(i= p->htaps/2; i; i--)
1443  put_symbol(&s->c, s->header_state, FFABS(p->hcoeff[i]), 0);
1444  }
1445  }
1447  put_rac(&s->c, s->header_state, 1);
1449  encode_qlogs(s);
1450  }else
1451  put_rac(&s->c, s->header_state, 0);
1452  }
1453 
1455  put_symbol(&s->c, s->header_state, s->qlog - s->last_qlog , 1);
1456  put_symbol(&s->c, s->header_state, s->mv_scale - s->last_mv_scale, 1);
1457  put_symbol(&s->c, s->header_state, s->qbias - s->last_qbias , 1);
1459 
1460 }
1461 
1463  int plane_index;
1464 
1465  if(!s->keyframe){
1466  for(plane_index=0; plane_index<2; plane_index++){
1467  Plane *p= &s->plane[plane_index];
1468  p->last_diag_mc= p->diag_mc;
1469  p->last_htaps = p->htaps;
1470  memcpy(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1471  }
1472  }
1473 
1475  s->last_qlog = s->qlog;
1476  s->last_qbias = s->qbias;
1477  s->last_mv_scale = s->mv_scale;
1480 }
1481 
1482 static int qscale2qlog(int qscale){
1483  return lrint(QROOT*log2(qscale / (float)FF_QP2LAMBDA))
1484  + 61*QROOT/8; ///< 64 > 60
1485 }
1486 
1488 {
1489  /* Estimate the frame's complexity as a sum of weighted dwt coefficients.
1490  * FIXME we know exact mv bits at this point,
1491  * but ratecontrol isn't set up to include them. */
1492  uint32_t coef_sum= 0;
1493  int level, orientation, delta_qlog;
1494 
1495  for(level=0; level<s->spatial_decomposition_count; level++){
1496  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1497  SubBand *b= &s->plane[0].band[level][orientation];
1498  IDWTELEM *buf= b->ibuf;
1499  const int w= b->width;
1500  const int h= b->height;
1501  const int stride= b->stride;
1502  const int qlog= av_clip(2*QROOT + b->qlog, 0, QROOT*16);
1503  const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1504  const int qdiv= (1<<16)/qmul;
1505  int x, y;
1506  //FIXME this is ugly
1507  for(y=0; y<h; y++)
1508  for(x=0; x<w; x++)
1509  buf[x+y*stride]= b->buf[x+y*stride];
1510  if(orientation==0)
1511  decorrelate(s, b, buf, stride, 1, 0);
1512  for(y=0; y<h; y++)
1513  for(x=0; x<w; x++)
1514  coef_sum+= abs(buf[x+y*stride]) * qdiv >> 16;
1515  }
1516  }
1517 
1518  /* ugly, ratecontrol just takes a sqrt again */
1519  av_assert0(coef_sum < INT_MAX);
1520  coef_sum = (uint64_t)coef_sum * coef_sum >> 16;
1521 
1522  if(pict->pict_type == AV_PICTURE_TYPE_I){
1523  s->m.current_picture.mb_var_sum= coef_sum;
1525  }else{
1526  s->m.current_picture.mc_mb_var_sum= coef_sum;
1528  }
1529 
1530  pict->quality= ff_rate_estimate_qscale(&s->m, 1);
1531  if (pict->quality < 0)
1532  return INT_MIN;
1533  s->lambda= pict->quality * 3/2;
1534  delta_qlog= qscale2qlog(pict->quality) - s->qlog;
1535  s->qlog+= delta_qlog;
1536  return delta_qlog;
1537 }
1538 
1540  int width = p->width;
1541  int height= p->height;
1542  int level, orientation, x, y;
1543 
1544  for(level=0; level<s->spatial_decomposition_count; level++){
1545  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1546  SubBand *b= &p->band[level][orientation];
1547  IDWTELEM *ibuf= b->ibuf;
1548  int64_t error=0;
1549 
1550  memset(s->spatial_idwt_buffer, 0, sizeof(*s->spatial_idwt_buffer)*width*height);
1551  ibuf[b->width/2 + b->height/2*b->stride]= 256*16;
1553  for(y=0; y<height; y++){
1554  for(x=0; x<width; x++){
1555  int64_t d= s->spatial_idwt_buffer[x + y*width]*16;
1556  error += d*d;
1557  }
1558  }
1559 
1560  b->qlog= (int)(QROOT * log2(352256.0/sqrt(error)) + 0.5);
1561  }
1562  }
1563 }
1564 
1566  const AVFrame *pict, int *got_packet)
1567 {
1568  SnowContext *s = avctx->priv_data;
1569  RangeCoder * const c= &s->c;
1570  AVFrame *pic;
1571  const int width= s->avctx->width;
1572  const int height= s->avctx->height;
1573  int level, orientation, plane_index, i, y, ret;
1574  uint8_t rc_header_bak[sizeof(s->header_state)];
1575  uint8_t rc_block_bak[sizeof(s->block_state)];
1576 
1577  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)
1578  return ret;
1579 
1580  ff_init_range_encoder(c, pkt->data, pkt->size);
1581  ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1582 
1583  for(i=0; i < s->nb_planes; i++){
1584  int hshift= i ? s->chroma_h_shift : 0;
1585  int vshift= i ? s->chroma_v_shift : 0;
1586  for(y=0; y<AV_CEIL_RSHIFT(height, vshift); y++)
1587  memcpy(&s->input_picture->data[i][y * s->input_picture->linesize[i]],
1588  &pict->data[i][y * pict->linesize[i]],
1589  AV_CEIL_RSHIFT(width, hshift));
1591  AV_CEIL_RSHIFT(width, hshift), AV_CEIL_RSHIFT(height, vshift),
1592  EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
1593  EDGE_TOP | EDGE_BOTTOM);
1594 
1595  }
1596  emms_c();
1597  pic = s->input_picture;
1598  pic->pict_type = pict->pict_type;
1599  pic->quality = pict->quality;
1600 
1601  s->m.picture_number= avctx->frame_number;
1602  if(avctx->flags&AV_CODEC_FLAG_PASS2){
1604  s->keyframe = pic->pict_type == AV_PICTURE_TYPE_I;
1605  if(!(avctx->flags&AV_CODEC_FLAG_QSCALE)) {
1606  pic->quality = ff_rate_estimate_qscale(&s->m, 0);
1607  if (pic->quality < 0)
1608  return -1;
1609  }
1610  }else{
1611  s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
1613  }
1614 
1615  if(s->pass1_rc && avctx->frame_number == 0)
1616  pic->quality = 2*FF_QP2LAMBDA;
1617  if (pic->quality) {
1618  s->qlog = qscale2qlog(pic->quality);
1619  s->lambda = pic->quality * 3/2;
1620  }
1621  if (s->qlog < 0 || (!pic->quality && (avctx->flags & AV_CODEC_FLAG_QSCALE))) {
1622  s->qlog= LOSSLESS_QLOG;
1623  s->lambda = 0;
1624  }//else keep previous frame's qlog until after motion estimation
1625 
1626  if (s->current_picture->data[0]) {
1627  int w = s->avctx->width;
1628  int h = s->avctx->height;
1629 
1631  s->current_picture->linesize[0], w , h ,
1633  if (s->current_picture->data[2]) {
1640  }
1641  emms_c();
1642  }
1643 
1645 #if FF_API_CODED_FRAME
1647  av_frame_unref(avctx->coded_frame);
1648  ret = av_frame_ref(avctx->coded_frame, s->current_picture);
1650 #endif
1651  if (ret < 0)
1652  return ret;
1653 
1656  s->m.current_picture.f->pts = pict->pts;
1657  if(pic->pict_type == AV_PICTURE_TYPE_P){
1658  int block_width = (width +15)>>4;
1659  int block_height= (height+15)>>4;
1660  int stride= s->current_picture->linesize[0];
1661 
1663  av_assert0(s->last_picture[0]->data[0]);
1664 
1665  s->m.avctx= s->avctx;
1666  s->m. last_picture.f = s->last_picture[0];
1667  s->m. new_picture.f = s->input_picture;
1668  s->m. last_picture_ptr= &s->m. last_picture;
1669  s->m.linesize = stride;
1670  s->m.uvlinesize= s->current_picture->linesize[1];
1671  s->m.width = width;
1672  s->m.height= height;
1673  s->m.mb_width = block_width;
1674  s->m.mb_height= block_height;
1675  s->m.mb_stride= s->m.mb_width+1;
1676  s->m.b8_stride= 2*s->m.mb_width+1;
1677  s->m.f_code=1;
1678  s->m.pict_type = pic->pict_type;
1679  s->m.motion_est= s->motion_est;
1680  s->m.me.scene_change_score=0;
1681  s->m.me.dia_size = avctx->dia_size;
1683  s->m.out_format= FMT_H263;
1684  s->m.unrestricted_mv= 1;
1685 
1686  s->m.lambda = s->lambda;
1687  s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
1688  s->lambda2= s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
1689 
1690  s->m.mecc= s->mecc; //move
1691  s->m.qdsp= s->qdsp; //move
1692  s->m.hdsp = s->hdsp;
1693  ff_init_me(&s->m);
1694  s->hdsp = s->m.hdsp;
1695  s->mecc= s->m.mecc;
1696  }
1697 
1698  if(s->pass1_rc){
1699  memcpy(rc_header_bak, s->header_state, sizeof(s->header_state));
1700  memcpy(rc_block_bak, s->block_state, sizeof(s->block_state));
1701  }
1702 
1703 redo_frame:
1704 
1706 
1707  while( !(width >>(s->chroma_h_shift + s->spatial_decomposition_count))
1708  || !(height>>(s->chroma_v_shift + s->spatial_decomposition_count)))
1710 
1711  if (s->spatial_decomposition_count <= 0) {
1712  av_log(avctx, AV_LOG_ERROR, "Resolution too low\n");
1713  return AVERROR(EINVAL);
1714  }
1715 
1716  s->m.pict_type = pic->pict_type;
1717  s->qbias = pic->pict_type == AV_PICTURE_TYPE_P ? 2 : 0;
1718 
1720 
1722  for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1723  calculate_visual_weight(s, &s->plane[plane_index]);
1724  }
1725  }
1726 
1727  encode_header(s);
1728  s->m.misc_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1729  encode_blocks(s, 1);
1730  s->m.mv_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits;
1731 
1732  for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1733  Plane *p= &s->plane[plane_index];
1734  int w= p->width;
1735  int h= p->height;
1736  int x, y;
1737 // int bits= put_bits_count(&s->c.pb);
1738 
1739  if (!s->memc_only) {
1740  //FIXME optimize
1741  if(pict->data[plane_index]) //FIXME gray hack
1742  for(y=0; y<h; y++){
1743  for(x=0; x<w; x++){
1744  s->spatial_idwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<FRAC_BITS;
1745  }
1746  }
1747  predict_plane(s, s->spatial_idwt_buffer, plane_index, 0);
1748 
1749 #if FF_API_PRIVATE_OPT
1754 #endif
1755 
1756  if( plane_index==0
1757  && pic->pict_type == AV_PICTURE_TYPE_P
1758  && !(avctx->flags&AV_CODEC_FLAG_PASS2)
1760  ff_init_range_encoder(c, pkt->data, pkt->size);
1761  ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1763  s->keyframe=1;
1764  s->current_picture->key_frame=1;
1765  goto redo_frame;
1766  }
1767 
1768  if(s->qlog == LOSSLESS_QLOG){
1769  for(y=0; y<h; y++){
1770  for(x=0; x<w; x++){
1771  s->spatial_dwt_buffer[y*w + x]= (s->spatial_idwt_buffer[y*w + x] + (1<<(FRAC_BITS-1))-1)>>FRAC_BITS;
1772  }
1773  }
1774  }else{
1775  for(y=0; y<h; y++){
1776  for(x=0; x<w; x++){
1778  }
1779  }
1780  }
1781 
1783 
1784  if(s->pass1_rc && plane_index==0){
1785  int delta_qlog = ratecontrol_1pass(s, pic);
1786  if (delta_qlog <= INT_MIN)
1787  return -1;
1788  if(delta_qlog){
1789  //reordering qlog in the bitstream would eliminate this reset
1790  ff_init_range_encoder(c, pkt->data, pkt->size);
1791  memcpy(s->header_state, rc_header_bak, sizeof(s->header_state));
1792  memcpy(s->block_state, rc_block_bak, sizeof(s->block_state));
1793  encode_header(s);
1794  encode_blocks(s, 0);
1795  }
1796  }
1797 
1798  for(level=0; level<s->spatial_decomposition_count; level++){
1799  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1800  SubBand *b= &p->band[level][orientation];
1801 
1802  quantize(s, b, b->ibuf, b->buf, b->stride, s->qbias);
1803  if(orientation==0)
1804  decorrelate(s, b, b->ibuf, b->stride, pic->pict_type == AV_PICTURE_TYPE_P, 0);
1805  if (!s->no_bitstream)
1806  encode_subband(s, b, b->ibuf, b->parent ? b->parent->ibuf : NULL, b->stride, orientation);
1807  av_assert0(b->parent==NULL || b->parent->stride == b->stride*2);
1808  if(orientation==0)
1809  correlate(s, b, b->ibuf, b->stride, 1, 0);
1810  }
1811  }
1812 
1813  for(level=0; level<s->spatial_decomposition_count; level++){
1814  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1815  SubBand *b= &p->band[level][orientation];
1816 
1817  dequantize(s, b, b->ibuf, b->stride);
1818  }
1819  }
1820 
1822  if(s->qlog == LOSSLESS_QLOG){
1823  for(y=0; y<h; y++){
1824  for(x=0; x<w; x++){
1825  s->spatial_idwt_buffer[y*w + x]<<=FRAC_BITS;
1826  }
1827  }
1828  }
1829  predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1830  }else{
1831  //ME/MC only
1832  if(pic->pict_type == AV_PICTURE_TYPE_I){
1833  for(y=0; y<h; y++){
1834  for(x=0; x<w; x++){
1835  s->current_picture->data[plane_index][y*s->current_picture->linesize[plane_index] + x]=
1836  pict->data[plane_index][y*pict->linesize[plane_index] + x];
1837  }
1838  }
1839  }else{
1840  memset(s->spatial_idwt_buffer, 0, sizeof(IDWTELEM)*w*h);
1841  predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1842  }
1843  }
1844  if(s->avctx->flags&AV_CODEC_FLAG_PSNR){
1845  int64_t error= 0;
1846 
1847  if(pict->data[plane_index]) //FIXME gray hack
1848  for(y=0; y<h; y++){
1849  for(x=0; x<w; x++){
1850  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];
1851  error += d*d;
1852  }
1853  }
1854  s->avctx->error[plane_index] += error;
1855  s->encoding_error[plane_index] = error;
1856  }
1857 
1858  }
1859  emms_c();
1860 
1862 
1863  ff_snow_release_buffer(avctx);
1864 
1866  s->current_picture->pict_type = pic->pict_type;
1867  s->current_picture->quality = pic->quality;
1868  s->m.frame_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1869  s->m.p_tex_bits = s->m.frame_bits - s->m.misc_bits - s->m.mv_bits;
1872  s->m.current_picture.f->quality = pic->quality;
1873  s->m.total_bits += 8*(s->c.bytestream - s->c.bytestream_start);
1874  if(s->pass1_rc)
1875  if (ff_rate_estimate_qscale(&s->m, 0) < 0)
1876  return -1;
1877  if(avctx->flags&AV_CODEC_FLAG_PASS1)
1878  ff_write_pass1_stats(&s->m);
1879  s->m.last_pict_type = s->m.pict_type;
1880 #if FF_API_STAT_BITS
1882  avctx->frame_bits = s->m.frame_bits;
1883  avctx->mv_bits = s->m.mv_bits;
1884  avctx->misc_bits = s->m.misc_bits;
1885  avctx->p_tex_bits = s->m.p_tex_bits;
1887 #endif
1888 
1889  emms_c();
1890 
1892  s->encoding_error,
1893  (s->avctx->flags&AV_CODEC_FLAG_PSNR) ? 4 : 0,
1895 
1896 #if FF_API_ERROR_FRAME
1898  memcpy(s->current_picture->error, s->encoding_error, sizeof(s->encoding_error));
1900 #endif
1901 
1902  pkt->size = ff_rac_terminate(c);
1903  if (s->current_picture->key_frame)
1904  pkt->flags |= AV_PKT_FLAG_KEY;
1905  *got_packet = 1;
1906 
1907  return 0;
1908 }
1909 
1911 {
1912  SnowContext *s = avctx->priv_data;
1913 
1914  ff_snow_common_end(s);
1917  av_freep(&avctx->stats_out);
1918 
1919  return 0;
1920 }
1921 
1922 #define OFFSET(x) offsetof(SnowContext, x)
1923 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1924 static const AVOption options[] = {
1925  {"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" },
1926  { "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, VE, "motion_est" },
1927  { "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, VE, "motion_est" },
1928  { "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, VE, "motion_est" },
1929  { "iter", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ITER }, 0, 0, VE, "motion_est" },
1930  { "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 },
1931  { "no_bitstream", "Skip final bitstream writeout.", OFFSET(no_bitstream), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1932  { "intra_penalty", "Penalty for intra blocks in block decission", OFFSET(intra_penalty), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1933  { "iterative_dia_size", "Dia size for the iterative ME", OFFSET(iterative_dia_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1934  { "sc_threshold", "Scene change threshold", OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, VE },
1935  { "pred", "Spatial decomposition type", OFFSET(pred), AV_OPT_TYPE_INT, { .i64 = 0 }, DWT_97, DWT_53, VE, "pred" },
1936  { "dwt97", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "pred" },
1937  { "dwt53", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "pred" },
1938  { NULL },
1939 };
1940 
1941 static const AVClass snowenc_class = {
1942  .class_name = "snow encoder",
1943  .item_name = av_default_item_name,
1944  .option = options,
1945  .version = LIBAVUTIL_VERSION_INT,
1946 };
1947 
1949  .name = "snow",
1950  .long_name = NULL_IF_CONFIG_SMALL("Snow"),
1951  .type = AVMEDIA_TYPE_VIDEO,
1952  .id = AV_CODEC_ID_SNOW,
1953  .priv_data_size = sizeof(SnowContext),
1954  .init = encode_init,
1955  .encode2 = encode_frame,
1956  .close = encode_end,
1957  .pix_fmts = (const enum AVPixelFormat[]){
1961  },
1962  .priv_class = &snowenc_class,
1963  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
1965 };
int last_block_max_depth
Definition: snow.h:168
uint8_t * scratchpad
data area for the ME algo, so that the ME does not need to malloc/free.
Definition: motion_est.h:52
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:48
static const AVClass snowenc_class
Definition: snowenc.c:1941
int version
Definition: snow.h:135
static av_cold int encode_end(AVCodecContext *avctx)
Definition: snowenc.c:1910
MpegEncContext m
Definition: snow.h:183
int frame_bits
bits used for the current frame
Definition: mpegvideo.h:335
int mv_scale
Definition: snow.h:160
#define NULL
Definition: coverity.c:32
RateControlContext rc_context
contains stuff only accessed in ratecontrol.c
Definition: mpegvideo.h:338
static av_always_inline void predict_plane(SnowContext *s, IDWTELEM *buf, int plane_index, int add)
Definition: snow.h:455
int ff_snow_frame_start(SnowContext *s)
Definition: snow.c:655
av_cold void ff_rate_control_uninit(MpegEncContext *s)
Definition: ratecontrol.c:672
#define QSHIFT
Definition: snow.h:43
#define P_MEDIAN
Definition: snowenc.c:223
int picture_number
Definition: mpegvideo.h:124
const char * s
Definition: avisynth_c.h:768
#define P
#define P_TOPRIGHT
Definition: snowenc.c:222
AVCodecContext * avctx
Definition: snow.h:116
int block_max_depth
Definition: snow.h:167
int last_spatial_decomposition_count
Definition: snow.h:140
static int shift(int a, int b)
Definition: sonic.c:82
int chroma_v_shift
Definition: snow.h:153
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
int skip
set if ME is skipped for the current MB
Definition: motion_est.h:49
AVOption.
Definition: opt.h:246
int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)
Definition: avpacket.c:669
int pass1_rc
Definition: snow.h:159
uint64_t error[AV_NUM_DATA_POINTERS]
error
Definition: avcodec.h:2656
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
RateControlEntry * entry
Definition: ratecontrol.h:65
int * run_buffer
Definition: snow.h:150
int64_t bit_rate
the average bitrate
Definition: avcodec.h:1531
#define LIBAVUTIL_VERSION_INT
Definition: version.h:86
#define P_LEFT
Definition: snowenc.c:220
void ff_h263_encode_init(MpegEncContext *s)
Definition: ituh263enc.c:761
int ff_epzs_motion_search(struct MpegEncContext *s, int *mx_ptr, int *my_ptr, int P[10][2], int src_index, int ref_index, int16_t(*last_mv)[2], int ref_mv_scale, int size, int h)
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int always_reset
Definition: snow.h:134
int no_bitstream
Definition: snow.h:177
uint8_t * current_mv_penalty
Definition: motion_est.h:94
#define BLOCK_INTRA
Intra block, inter otherwise.
Definition: snow.h:58
Range coder.
uint8_t * bytestream_end
Definition: rangecoder.h:44
int size
Definition: avcodec.h:1400
const char * b
Definition: vf_curves.c:113
int mb_lmin
minimum MB Lagrange multiplier
Definition: avcodec.h:2023
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:193
int av_log2(unsigned v)
Definition: intmath.c:26
int scenechange_threshold
Definition: snow.h:181
int sub_penalty_factor
Definition: motion_est.h:67
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1690
int max_ref_frames
Definition: snow.h:142
uint32_t * score_map
map to store the scores
Definition: motion_est.h:59
#define FF_CMP_W97
Definition: avcodec.h:1897
mpegvideo header.
int8_t last_hcoeff[HTAPS_MAX/2]
Definition: snow.h:110
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
int scene_change_score
Definition: motion_est.h:87
int ff_snow_common_init_after_header(AVCodecContext *avctx)
Definition: snow.c:514
ptrdiff_t stride
Definition: cfhd.h:46
static void update_last_header_values(SnowContext *s)
Definition: snowenc.c:1462
int keyframe
Definition: snow.h:133
uint8_t run
Definition: svq3.c:206
static AVPacket pkt
#define EDGE_TOP
#define src
Definition: vp8dsp.c:254
#define FF_LAMBDA_SHIFT
Definition: avutil.h:225
QpelDSPContext qdsp
Definition: mpegvideo.h:232
AVCodec.
Definition: avcodec.h:3289
uint8_t(* mv_penalty)[MAX_DMV *2+1]
bit amount needed to encode a MV
Definition: motion_est.h:93
int qscale
QP.
Definition: mpegvideo.h:201
void ff_snow_reset_contexts(SnowContext *s)
Definition: snow.c:96
static void set_blocks(SnowContext *s, int level, int x, int y, int l, int cb, int cr, int mx, int my, int ref, int type)
Definition: snow.h:462
short IDWTELEM
Definition: dirac_dwt.h:27
enum AVPictureType last_picture
Definition: movenc.c:68
HpelDSPContext hdsp
Definition: snow.h:119
#define FF_ME_ZERO
Definition: motion_est.h:40
uint32_t ff_square_tab[512]
Definition: me_cmp.c:32
AVCodec ff_snow_encoder
Definition: snowenc.c:1948
#define log2(x)
Definition: libm.h:404
MECmpContext mecc
Definition: snow.h:118
static int encode_subband_c0run(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation)
Definition: snowenc.c:777
#define OFFSET(x)
Definition: snowenc.c:1922
int qlog
log(qscale)/log[2^(1/6)]
Definition: snow.h:88
int ff_rac_terminate(RangeCoder *c)
Definition: rangecoder.c:109
Definition: snow.h:51
int width
Definition: cfhd.h:48
static int get_penalty_factor(int lambda, int lambda2, int type)
Definition: snowenc.c:195
static int16_t block[64]
Definition: dct.c:115
uint8_t level
Definition: snow.h:61
attribute_deprecated int mv_bits
Definition: avcodec.h:2469
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
uint8_t ref
Reference frame index.
Definition: snow.h:54
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: encode.c:32
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:106
av_cold void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:40
int mb_lmax
maximum MB Lagrange multiplier
Definition: avcodec.h:2030
int b_height
Definition: snow.h:166
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: snowenc.c:1565
ScratchpadContext sc
Definition: mpegvideo.h:199
uint8_t
#define ME_MAP_SIZE
Definition: motion_est.h:38
int16_t mx
Motion vector component X, see mv_scale.
Definition: snow.h:52
#define av_cold
Definition: attributes.h:82
#define FRAC_BITS
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:150
static av_noinline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed)
Definition: ffv1enc.c:233
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
static float search(FOCContext *foc, int pass, int maxpass, int xmin, int xmax, int ymin, int ymax, int *best_x, int *best_y, float best_score)
Definition: vf_find_rect.c:156
AVOptions.
enum OutputFormat out_format
output format
Definition: mpegvideo.h:101
uint32_t * ref_scores[MAX_REF_FRAMES]
Definition: snow.h:145
int ff_get_mb_score(struct MpegEncContext *s, int mx, int my, int src_index, int ref_index, int size, int h, int add_rate)
Motion estimation context.
Definition: motion_est.h:47
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
Definition: frame.c:400
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:294
int misc_bits
cbp, mb_type
Definition: mpegvideo.h:349
int me_cmp
motion estimation comparison function
Definition: avcodec.h:1866
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:177
#define ENCODER_EXTRA_BITS
Definition: snow.h:75
static void calculate_visual_weight(SnowContext *s, Plane *p)
Definition: snowenc.c:1539
#define height
int16_t my
Motion vector component Y, see mv_scale.
Definition: snow.h:53
uint8_t * data
Definition: avcodec.h:1399
int ff_w97_32_c(struct MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t line_size, int h)
Definition: snow_dwt.c:837
static const BlockNode null_block
Definition: snow.h:64
static void encode_blocks(SnowContext *s, int search)
Definition: snowenc.c:1223
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:126
ptrdiff_t size
Definition: opengl_enc.c:101
void ff_snow_release_buffer(AVCodecContext *avctx)
Definition: snow.c:640
#define QEXPSHIFT
Definition: snow.h:507
char * stats_out
pass1 encoding statistics output buffer
Definition: avcodec.h:2495
#define FF_CMP_SSE
Definition: avcodec.h:1886
#define AV_INPUT_BUFFER_MIN_SIZE
minimum encoding buffer size Used to avoid some checks during header writing.
Definition: avcodec.h:776
attribute_deprecated uint64_t error[AV_NUM_DATA_POINTERS]
Definition: frame.h:336
static void put_symbol2(RangeCoder *c, uint8_t *state, int v, int log2)
Definition: snow.h:563
#define av_log(a,...)
#define ff_sqrt
Definition: mathops.h:206
Definition: cfhd.h:43
#define ROUNDED_DIV(a, b)
Definition: common.h:56
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1431
#define DWT_97
Definition: snow_dwt.h:66
BlockNode * block
Definition: snow.h:171
MpegvideoEncDSPContext mpvencdsp
Definition: snow.h:123
int last_diag_mc
Definition: snow.h:111
#define EDGE_WIDTH
Definition: mpegpicture.h:33
#define MAX_DMV
Definition: motion_est.h:37
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int16_t(*[MAX_REF_FRAMES] ref_mvs)[2]
Definition: snow.h:144
#define MB_SIZE
Definition: cinepakenc.c:54
#define AV_CODEC_FLAG_4MV
4 MV per MB allowed / advanced prediction for H.263.
Definition: avcodec.h:833
int64_t total_bits
Definition: mpegvideo.h:334
unsigned me_cache_generation
Definition: snow.h:174
#define AVERROR(e)
Definition: error.h:43
av_cold int ff_rate_control_init(MpegEncContext *s)
Definition: ratecontrol.c:472
int me_sub_cmp
subpixel motion estimation comparison function
Definition: avcodec.h:1872
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:163
int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
Definition: pixdesc.c:2387
void ff_write_pass1_stats(MpegEncContext *s)
Definition: ratecontrol.c:38
int unrestricted_mv
mv can point outside of the coded picture
Definition: mpegvideo.h:220
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:190
int diag_mc
Definition: snow.h:106
const char * r
Definition: vf_curves.c:111
static void pred_mv(DiracBlock *block, int stride, int x, int y, int ref)
Definition: diracdec.c:1357
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
const uint8_t *const ff_obmc_tab[4]
Definition: snowdata.h:123
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1561
static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index)
Definition: snowenc.c:511
uint16_t width
Definition: gdv.c:47
const char * name
Name of the codec implementation.
Definition: avcodec.h:3296
static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median)
Definition: snowenc.c:1352
int quarter_sample
1->qpel, 0->half pel ME/MC
Definition: mpegvideo.h:396
static int square(int x)
Definition: roqvideoenc.c:113
int lambda
Definition: snow.h:157
int intra_penalty
Definition: snow.h:178
#define FFMAX(a, b)
Definition: common.h:94
uint8_t * emu_edge_buffer
Definition: snow.h:186
uint8_t * bytestream
Definition: rangecoder.h:43
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1405
uint8_t color[3]
Color for intra.
Definition: snow.h:55
#define pass
Definition: fft_template.c:593
int ref_frames
Definition: snow.h:143
int htaps
Definition: snow.h:104
int qlog
Definition: snow.h:155
int refs
number of reference frames
Definition: avcodec.h:2064
#define FF_CMP_BIT
Definition: avcodec.h:1890
SubBand band[DWT_LEVELS][4]
Definition: cfhd.h:68
const int8_t ff_quant3bA[256]
Definition: snowdata.h:104
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:284
uint8_t * ibuf
Definition: cfhd.h:53
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
#define AV_CODEC_FLAG_QSCALE
Use fixed qscale.
Definition: avcodec.h:829
#define FFMIN(a, b)
Definition: common.h:96
int display_picture_number
picture number in display order
Definition: frame.h:319
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)
Definition: snowenc.c:945
#define ME_CACHE_SIZE
Definition: snow.h:172
#define LOSSLESS_QLOG
Definition: snow.h:45
int width
picture width / height.
Definition: avcodec.h:1653
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:181
#define VE
Definition: snowenc.c:1923
uint8_t * scratchbuf
Definition: snow.h:185
#define AV_CODEC_FLAG_PSNR
error[?] variables will be set during encoding.
Definition: avcodec.h:861
static int encode_q_branch(SnowContext *s, int level, int x, int y)
Definition: snowenc.c:227
Plane plane[MAX_PLANES]
Definition: snow.h:170
float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run)
Definition: ratecontrol.c:868
#define AV_CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
Definition: avcodec.h:845
static av_always_inline void add_yblock(SnowContext *s, int sliced, slice_buffer *sb, IDWTELEM *dst, uint8_t *dst8, const uint8_t *obmc, int src_x, int src_y, int b_w, int b_h, int w, int h, int dst_stride, int src_stride, int obmc_stride, int b_x, int b_y, int add, int offset_dst, int plane_index)
Definition: snow.h:280
int b_width
Definition: snow.h:165
void ff_build_rac_states(RangeCoder *c, int factor, int max_p)
Definition: rangecoder.c:68
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:324
MotionEstContext me
Definition: mpegvideo.h:279
int last_mv_scale
Definition: snow.h:161
static struct @271 state
int chroma_h_shift
Definition: snow.h:152
#define FF_CMP_SAD
Definition: avcodec.h:1885
static void error(const char *err)
int penalty_factor
an estimate of the bits required to code a given mv value, e.g.
Definition: motion_est.h:62
static const float pred[4]
Definition: siprdata.h:259
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
static av_always_inline int same_block(BlockNode *a, BlockNode *b)
Definition: snow.h:270
attribute_deprecated int misc_bits
Definition: avcodec.h:2483
uint8_t block_state[128+32 *128]
Definition: snow.h:132
int qbias
Definition: snow.h:162
int coded_picture_number
picture number in bitstream order
Definition: frame.h:315
#define FF_ME_XONE
Definition: motion_est.h:42
#define FF_LAMBDA_SCALE
Definition: avutil.h:226
int ff_snow_get_buffer(SnowContext *s, AVFrame *frame)
Definition: snow.c:69
unsigned int lambda2
(lambda*lambda) >> FF_LAMBDA_SHIFT
Definition: mpegvideo.h:204
Libavcodec external API header.
static void encode_header(SnowContext *s)
Definition: snowenc.c:1389
attribute_deprecated int scenechange_threshold
Definition: avcodec.h:1990
#define FF_CMP_RD
Definition: avcodec.h:1891
ptrdiff_t linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:131
AVCodecContext * avctx
Definition: motion_est.h:48
#define LOG2_OBMC_MAX
Definition: snow.h:49
int spatial_decomposition_count
Definition: snow.h:139
int DWTELEM
Definition: dirac_dwt.h:26
attribute_deprecated int prediction_method
Definition: avcodec.h:1839
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:232
void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type)
Definition: me_cmp.c:440
main external API structure.
Definition: avcodec.h:1481
int8_t hcoeff[HTAPS_MAX/2]
Definition: snow.h:105
#define QROOT
Definition: snow.h:44
void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, ptrdiff_t stride, int sx, int sy, int b_w, int b_h, const BlockNode *block, int plane_index, int w, int h)
Definition: snow.c:327
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:97
#define FF_CMP_NSSE
Definition: avcodec.h:1895
#define FF_ME_EPZS
Definition: motion_est.h:41
int ff_snow_alloc_blocks(SnowContext *s)
Definition: snow.c:110
#define FF_CMP_SATD
Definition: avcodec.h:1887
struct SubBand * parent
Definition: diracdec.c:99
void * buf
Definition: avisynth_c.h:690
#define FF_CMP_DCT
Definition: avcodec.h:1888
GLint GLenum type
Definition: opengl_enc.c:105
static int get_rac_count(RangeCoder *c)
Definition: rangecoder.h:79
static void encode_q_branch2(SnowContext *s, int level, int x, int y)
Definition: snowenc.c:455
Replacements for frequently missing libm functions.
unsigned me_cache[ME_CACHE_SIZE]
Definition: snow.h:173
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
Describe the class of an AVClass context structure.
Definition: log.h:67
av_cold void ff_init_range_encoder(RangeCoder *c, uint8_t *buf, int buf_size)
Definition: rangecoder.c:42
int64_t mc_mb_var_sum
motion compensated MB variance for current frame
Definition: mpegpicture.h:82
int index
Definition: gxfenc.c:89
struct AVFrame * f
Definition: mpegpicture.h:46
int nb_planes
Definition: snow.h:169
int pred
Definition: snow.h:192
static int get_block_bits(SnowContext *s, int x, int y, int w)
Definition: snowenc.c:569
void ff_spatial_idwt(IDWTELEM *buffer, IDWTELEM *temp, int width, int height, int stride, int type, int decomposition_count)
Definition: snow_dwt.c:731
#define mid_pred
Definition: mathops.h:97
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
Definition: mpegvideo.h:132
#define FF_CMP_PSNR
Definition: avcodec.h:1889
int ff_w53_32_c(struct MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t line_size, int h)
Definition: snow_dwt.c:832
DWTELEM * temp_dwt_buffer
Definition: snow.h:147
#define FF_CMP_W53
Definition: avcodec.h:1896
uint8_t header_state[32]
Definition: snow.h:131
int motion_est
Definition: snow.h:179
int f_code
forward MV resolution
Definition: mpegvideo.h:235
#define FF_CMP_DCT264
Definition: avcodec.h:1899
int last_qlog
Definition: snow.h:156
uint64_t encoding_error[AV_NUM_DATA_POINTERS]
Definition: snow.h:190
attribute_deprecated int p_tex_bits
Definition: avcodec.h:2475
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:209
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
int spatial_scalability
Definition: snow.h:154
static int qscale2qlog(int qscale)
Definition: snowenc.c:1482
static int pix_sum(uint8_t *pix, int line_size, int w, int h)
Definition: snowenc.c:163
int ff_snow_common_init(AVCodecContext *avctx)
static void encode_qlogs(SnowContext *s)
Definition: snowenc.c:1376
int motion_est
ME algorithm.
Definition: mpegvideo.h:255
int iterative_dia_size
Definition: snow.h:180
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:510
int global_quality
Global quality for codecs which cannot change it per frame.
Definition: avcodec.h:1547
me_cmp_func me_cmp[6]
Definition: me_cmp.h:72
int ff_init_me(MpegEncContext *s)
Definition: motion_est.c:306
#define AV_CODEC_FLAG_QPEL
Use qpel MC.
Definition: avcodec.h:841
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:215
int spatial_decomposition_type
Definition: snow.h:136
AVFrame * current_picture
Definition: snow.h:126
int memc_only
Definition: snow.h:176
uint8_t level
Definition: svq3.c:207
static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, uint8_t(*obmc_edged)[MB_SIZE *2])
Definition: snowenc.c:607
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
Definition: mpegvideo.h:128
struct AVCodecContext * avctx
Definition: mpegvideo.h:95
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1675
static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index)
Definition: snowenc.c:708
int
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
int mb_cmp
macroblock comparison function (not supported yet)
Definition: avcodec.h:1878
MECmpContext mecc
Definition: mpegvideo.h:228
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
Y , 8bpp.
Definition: pixfmt.h:70
#define MID_STATE
Definition: snow.h:40
int temporal_decomposition_type
Definition: snow.h:138
#define QBIAS_SHIFT
Definition: snow.h:164
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:88
common internal api header.
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
Definition: mpegvideo.h:127
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
IDWTELEM * temp_idwt_buffer
Definition: snow.h:149
void ff_spatial_dwt(DWTELEM *buffer, DWTELEM *temp, int width, int height, int stride, int type, int decomposition_count)
Definition: snow_dwt.c:319
static double c[64]
int last_pict_type
Definition: mpegvideo.h:211
#define LOG2_MB_SIZE
Definition: snow.h:73
#define put_rac(C, S, B)
DWTELEM * spatial_dwt_buffer
Definition: snow.h:146
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:2723
static av_cold int encode_init(AVCodecContext *avctx)
Definition: snowenc.c:37
int lambda2
Definition: snow.h:158
me_cmp_func me_sub_cmp[6]
Definition: me_cmp.h:73
uint8_t state[7+512][32]
Definition: snow.h:96
static const AVOption options[]
Definition: snowenc.c:1924
uint32_t * map
map to avoid duplicate evaluations
Definition: motion_est.h:58
IDWTELEM * spatial_idwt_buffer
Definition: snow.h:148
uint8_t * bytestream_start
Definition: rangecoder.h:42
#define AV_CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
Definition: avcodec.h:849
void * priv_data
Definition: avcodec.h:1508
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)
Definition: snowenc.c:950
static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride)
Definition: snowenc.c:1306
int dia_size
ME diamond size & shape.
Definition: avcodec.h:1908
attribute_deprecated int frame_bits
Definition: avcodec.h:2487
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:89
#define FF_ME_ITER
Definition: snow.h:38
uint8_t * obmc_scratchpad
Definition: mpegpicture.h:38
void(* draw_edges)(uint8_t *buf, int wrap, int width, int height, int w, int h, int sides)
static void init_ref(MotionEstContext *c, uint8_t *src[3], uint8_t *ref[3], uint8_t *ref2[3], int x, int y, int ref_index)
Definition: motion_est.c:83
int colorspace_type
Definition: snow.h:151
int last_htaps
Definition: snow.h:109
int64_t bit_rate
wanted bit rate
Definition: mpegvideo.h:100
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:279
int height
Definition: cfhd.h:50
#define DWT_53
Definition: snow_dwt.h:67
#define FF_QP2LAMBDA
factor to convert from H.263 QP to lambda
Definition: avutil.h:227
#define lrint
Definition: tablegen.h:53
int fast_mc
Definition: snow.h:107
#define EDGE_BOTTOM
int width
Definition: cfhd.h:57
av_cold void ff_snow_common_end(SnowContext *s)
Definition: snow.c:693
RangeCoder c
Definition: snow.h:117
uint8_t ff_qexp[QROOT]
Definition: snowdata.h:128
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:2167
DWTELEM * buf
Definition: snow.h:89
#define P_TOP
Definition: snowenc.c:221
#define av_freep(p)
#define MAX_REF_FRAMES
Definition: snow.h:47
#define av_always_inline
Definition: attributes.h:39
uint8_t * temp
Definition: motion_est.h:56
static uint32_t inverse(uint32_t v)
find multiplicative inverse modulo 2 ^ 32
Definition: asfcrypt.c:35
uint8_t type
Bitfield of BLOCK_*.
Definition: snow.h:56
#define stride
static int ratecontrol_1pass(SnowContext *s, AVFrame *pict)
Definition: snowenc.c:1487
AVFrame * last_picture[MAX_REF_FRAMES]
Definition: snow.h:127
int height
Definition: cfhd.h:58
int last_qbias
Definition: snow.h:163
static double cr(void *priv, double x, double y)
Definition: vf_geq.c:107
AVFrame * input_picture
new_picture with the internal linesizes
Definition: snow.h:125
static int pix_norm1(uint8_t *pix, int line_size, int w)
Definition: snowenc.c:179
int temporal_decomposition_count
Definition: snow.h:141
int64_t mb_var_sum
sum of MB variance for current frame
Definition: mpegpicture.h:81
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1376
static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median)
Definition: snowenc.c:1328
int(* sub_motion_search)(struct MpegEncContext *s, int *mx_ptr, int *my_ptr, int dmin, int src_index, int ref_index, int size, int h)
Definition: motion_est.h:95
#define BLOCK_OPT
Block needs no checks in this round of iterative motion estiation.
Definition: snow.h:59
static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias)
Definition: snowenc.c:1245
static int encode_subband(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation)
Definition: snowenc.c:897
int last_spatial_decomposition_type
Definition: snow.h:137
#define t2
Definition: regdef.h:30
Predicted.
Definition: avutil.h:275
unsigned int lambda
Lagrange multiplier used in rate distortion.
Definition: mpegvideo.h:203
Definition: cfhd.h:56
#define tb
Definition: regdef.h:68
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.c:191
HpelDSPContext hdsp
Definition: mpegvideo.h:226
static void iterative_me(SnowContext *s)
Definition: snowenc.c:996
QpelDSPContext qdsp
Definition: snow.h:120
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)
Definition: snowenc.c:904
static uint8_t tmp[11]
Definition: aes_ctr.c:26