FFmpeg  4.2.2
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  s->m.mb_num = (avctx->width * avctx->height + 255) / 256; // For ratecontrol
85 
86  s->m.me.temp =
87  s->m.me.scratchpad= av_mallocz_array((avctx->width+64), 2*16*2*sizeof(uint8_t));
88  s->m.me.map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
89  s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
90  s->m.sc.obmc_scratchpad= av_mallocz(MB_SIZE*MB_SIZE*12*sizeof(uint32_t));
91  if (!s->m.me.scratchpad || !s->m.me.map || !s->m.me.score_map || !s->m.sc.obmc_scratchpad)
92  return AVERROR(ENOMEM);
93 
94  ff_h263_encode_init(&s->m); //mv_penalty
95 
96  s->max_ref_frames = av_clip(avctx->refs, 1, MAX_REF_FRAMES);
97 
98  if(avctx->flags&AV_CODEC_FLAG_PASS1){
99  if(!avctx->stats_out)
100  avctx->stats_out = av_mallocz(256);
101 
102  if (!avctx->stats_out)
103  return AVERROR(ENOMEM);
104  }
105  if((avctx->flags&AV_CODEC_FLAG_PASS2) || !(avctx->flags&AV_CODEC_FLAG_QSCALE)){
106  ret = ff_rate_control_init(&s->m);
107  if(ret < 0)
108  return ret;
109  }
111 
112  switch(avctx->pix_fmt){
113  case AV_PIX_FMT_YUV444P:
114 // case AV_PIX_FMT_YUV422P:
115  case AV_PIX_FMT_YUV420P:
116 // case AV_PIX_FMT_YUV411P:
117  case AV_PIX_FMT_YUV410P:
118  s->nb_planes = 3;
119  s->colorspace_type= 0;
120  break;
121  case AV_PIX_FMT_GRAY8:
122  s->nb_planes = 1;
123  s->colorspace_type = 1;
124  break;
125 /* case AV_PIX_FMT_RGB32:
126  s->colorspace= 1;
127  break;*/
128  default:
129  av_log(avctx, AV_LOG_ERROR, "pixel format not supported\n");
130  return AVERROR_PATCHWELCOME;
131  }
132 
134  &s->chroma_v_shift);
135  if (ret) {
136  av_log(avctx, AV_LOG_ERROR, "pixel format invalid or unknown\n");
137  return ret;
138  }
139 
140  ff_set_cmp(&s->mecc, s->mecc.me_cmp, s->avctx->me_cmp);
142 
144  if (!s->input_picture)
145  return AVERROR(ENOMEM);
146 
147  if ((ret = ff_snow_get_buffer(s, s->input_picture)) < 0)
148  return ret;
149 
150  if(s->motion_est == FF_ME_ITER){
151  int size= s->b_width * s->b_height << 2*s->block_max_depth;
152  for(i=0; i<s->max_ref_frames; i++){
153  s->ref_mvs[i]= av_mallocz_array(size, sizeof(int16_t[2]));
154  s->ref_scores[i]= av_mallocz_array(size, sizeof(uint32_t));
155  if (!s->ref_mvs[i] || !s->ref_scores[i])
156  return AVERROR(ENOMEM);
157  }
158  }
159 
160  return 0;
161 }
162 
163 //near copy & paste from dsputil, FIXME
164 static int pix_sum(uint8_t * pix, int line_size, int w, int h)
165 {
166  int s, i, j;
167 
168  s = 0;
169  for (i = 0; i < h; i++) {
170  for (j = 0; j < w; j++) {
171  s += pix[0];
172  pix ++;
173  }
174  pix += line_size - w;
175  }
176  return s;
177 }
178 
179 //near copy & paste from dsputil, FIXME
180 static int pix_norm1(uint8_t * pix, int line_size, int w)
181 {
182  int s, i, j;
183  const uint32_t *sq = ff_square_tab + 256;
184 
185  s = 0;
186  for (i = 0; i < w; i++) {
187  for (j = 0; j < w; j ++) {
188  s += sq[pix[0]];
189  pix ++;
190  }
191  pix += line_size - w;
192  }
193  return s;
194 }
195 
196 static inline int get_penalty_factor(int lambda, int lambda2, int type){
197  switch(type&0xFF){
198  default:
199  case FF_CMP_SAD:
200  return lambda>>FF_LAMBDA_SHIFT;
201  case FF_CMP_DCT:
202  return (3*lambda)>>(FF_LAMBDA_SHIFT+1);
203  case FF_CMP_W53:
204  return (4*lambda)>>(FF_LAMBDA_SHIFT);
205  case FF_CMP_W97:
206  return (2*lambda)>>(FF_LAMBDA_SHIFT);
207  case FF_CMP_SATD:
208  case FF_CMP_DCT264:
209  return (2*lambda)>>FF_LAMBDA_SHIFT;
210  case FF_CMP_RD:
211  case FF_CMP_PSNR:
212  case FF_CMP_SSE:
213  case FF_CMP_NSSE:
214  return lambda2>>FF_LAMBDA_SHIFT;
215  case FF_CMP_BIT:
216  return 1;
217  }
218 }
219 
220 //FIXME copy&paste
221 #define P_LEFT P[1]
222 #define P_TOP P[2]
223 #define P_TOPRIGHT P[3]
224 #define P_MEDIAN P[4]
225 #define P_MV1 P[9]
226 #define FLAG_QPEL 1 //must be 1
227 
228 static int encode_q_branch(SnowContext *s, int level, int x, int y){
229  uint8_t p_buffer[1024];
230  uint8_t i_buffer[1024];
231  uint8_t p_state[sizeof(s->block_state)];
232  uint8_t i_state[sizeof(s->block_state)];
233  RangeCoder pc, ic;
234  uint8_t *pbbak= s->c.bytestream;
235  uint8_t *pbbak_start= s->c.bytestream_start;
236  int score, score2, iscore, i_len, p_len, block_s, sum, base_bits;
237  const int w= s->b_width << s->block_max_depth;
238  const int h= s->b_height << s->block_max_depth;
239  const int rem_depth= s->block_max_depth - level;
240  const int index= (x + y*w) << rem_depth;
241  const int block_w= 1<<(LOG2_MB_SIZE - level);
242  int trx= (x+1)<<rem_depth;
243  int try= (y+1)<<rem_depth;
244  const BlockNode *left = x ? &s->block[index-1] : &null_block;
245  const BlockNode *top = y ? &s->block[index-w] : &null_block;
246  const BlockNode *right = trx<w ? &s->block[index+1] : &null_block;
247  const BlockNode *bottom= try<h ? &s->block[index+w] : &null_block;
248  const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
249  const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
250  int pl = left->color[0];
251  int pcb= left->color[1];
252  int pcr= left->color[2];
253  int pmx, pmy;
254  int mx=0, my=0;
255  int l,cr,cb;
256  const int stride= s->current_picture->linesize[0];
257  const int uvstride= s->current_picture->linesize[1];
258  uint8_t *current_data[3]= { s->input_picture->data[0] + (x + y* stride)*block_w,
259  s->input_picture->data[1] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift),
260  s->input_picture->data[2] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift)};
261  int P[10][2];
262  int16_t last_mv[3][2];
263  int qpel= !!(s->avctx->flags & AV_CODEC_FLAG_QPEL); //unused
264  const int shift= 1+qpel;
265  MotionEstContext *c= &s->m.me;
266  int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
267  int mx_context= av_log2(2*FFABS(left->mx - top->mx));
268  int my_context= av_log2(2*FFABS(left->my - top->my));
269  int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
270  int ref, best_ref, ref_score, ref_mx, ref_my;
271 
272  av_assert0(sizeof(s->block_state) >= 256);
273  if(s->keyframe){
274  set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
275  return 0;
276  }
277 
278 // clip predictors / edge ?
279 
280  P_LEFT[0]= left->mx;
281  P_LEFT[1]= left->my;
282  P_TOP [0]= top->mx;
283  P_TOP [1]= top->my;
284  P_TOPRIGHT[0]= tr->mx;
285  P_TOPRIGHT[1]= tr->my;
286 
287  last_mv[0][0]= s->block[index].mx;
288  last_mv[0][1]= s->block[index].my;
289  last_mv[1][0]= right->mx;
290  last_mv[1][1]= right->my;
291  last_mv[2][0]= bottom->mx;
292  last_mv[2][1]= bottom->my;
293 
294  s->m.mb_stride=2;
295  s->m.mb_x=
296  s->m.mb_y= 0;
297  c->skip= 0;
298 
299  av_assert1(c-> stride == stride);
300  av_assert1(c->uvstride == uvstride);
301 
306 
307  c->xmin = - x*block_w - 16+3;
308  c->ymin = - y*block_w - 16+3;
309  c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
310  c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
311 
312  if(P_LEFT[0] > (c->xmax<<shift)) P_LEFT[0] = (c->xmax<<shift);
313  if(P_LEFT[1] > (c->ymax<<shift)) P_LEFT[1] = (c->ymax<<shift);
314  if(P_TOP[0] > (c->xmax<<shift)) P_TOP[0] = (c->xmax<<shift);
315  if(P_TOP[1] > (c->ymax<<shift)) P_TOP[1] = (c->ymax<<shift);
316  if(P_TOPRIGHT[0] < (c->xmin * (1<<shift))) P_TOPRIGHT[0]= (c->xmin * (1<<shift));
317  if(P_TOPRIGHT[0] > (c->xmax<<shift)) P_TOPRIGHT[0]= (c->xmax<<shift); //due to pmx no clip
318  if(P_TOPRIGHT[1] > (c->ymax<<shift)) P_TOPRIGHT[1]= (c->ymax<<shift);
319 
320  P_MEDIAN[0]= mid_pred(P_LEFT[0], P_TOP[0], P_TOPRIGHT[0]);
321  P_MEDIAN[1]= mid_pred(P_LEFT[1], P_TOP[1], P_TOPRIGHT[1]);
322 
323  if (!y) {
324  c->pred_x= P_LEFT[0];
325  c->pred_y= P_LEFT[1];
326  } else {
327  c->pred_x = P_MEDIAN[0];
328  c->pred_y = P_MEDIAN[1];
329  }
330 
331  score= INT_MAX;
332  best_ref= 0;
333  for(ref=0; ref<s->ref_frames; ref++){
334  init_ref(c, current_data, s->last_picture[ref]->data, NULL, block_w*x, block_w*y, 0);
335 
336  ref_score= ff_epzs_motion_search(&s->m, &ref_mx, &ref_my, P, 0, /*ref_index*/ 0, last_mv,
337  (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w);
338 
339  av_assert2(ref_mx >= c->xmin);
340  av_assert2(ref_mx <= c->xmax);
341  av_assert2(ref_my >= c->ymin);
342  av_assert2(ref_my <= c->ymax);
343 
344  ref_score= c->sub_motion_search(&s->m, &ref_mx, &ref_my, ref_score, 0, 0, level-LOG2_MB_SIZE+4, block_w);
345  ref_score= ff_get_mb_score(&s->m, ref_mx, ref_my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0);
346  ref_score+= 2*av_log2(2*ref)*c->penalty_factor;
347  if(s->ref_mvs[ref]){
348  s->ref_mvs[ref][index][0]= ref_mx;
349  s->ref_mvs[ref][index][1]= ref_my;
350  s->ref_scores[ref][index]= ref_score;
351  }
352  if(score > ref_score){
353  score= ref_score;
354  best_ref= ref;
355  mx= ref_mx;
356  my= ref_my;
357  }
358  }
359  //FIXME if mb_cmp != SSE then intra cannot be compared currently and mb_penalty vs. lambda2
360 
361  // subpel search
362  base_bits= get_rac_count(&s->c) - 8*(s->c.bytestream - s->c.bytestream_start);
363  pc= s->c;
364  pc.bytestream_start=
365  pc.bytestream= p_buffer; //FIXME end/start? and at the other stoo
366  memcpy(p_state, s->block_state, sizeof(s->block_state));
367 
368  if(level!=s->block_max_depth)
369  put_rac(&pc, &p_state[4 + s_context], 1);
370  put_rac(&pc, &p_state[1 + left->type + top->type], 0);
371  if(s->ref_frames > 1)
372  put_symbol(&pc, &p_state[128 + 1024 + 32*ref_context], best_ref, 0);
373  pred_mv(s, &pmx, &pmy, best_ref, left, top, tr);
374  put_symbol(&pc, &p_state[128 + 32*(mx_context + 16*!!best_ref)], mx - pmx, 1);
375  put_symbol(&pc, &p_state[128 + 32*(my_context + 16*!!best_ref)], my - pmy, 1);
376  p_len= pc.bytestream - pc.bytestream_start;
377  score += (s->lambda2*(get_rac_count(&pc)-base_bits))>>FF_LAMBDA_SHIFT;
378 
379  block_s= block_w*block_w;
380  sum = pix_sum(current_data[0], stride, block_w, block_w);
381  l= (sum + block_s/2)/block_s;
382  iscore = pix_norm1(current_data[0], stride, block_w) - 2*l*sum + l*l*block_s;
383 
384  if (s->nb_planes > 2) {
385  block_s= block_w*block_w>>(s->chroma_h_shift + s->chroma_v_shift);
386  sum = pix_sum(current_data[1], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
387  cb= (sum + block_s/2)/block_s;
388  // iscore += pix_norm1(&current_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s;
389  sum = pix_sum(current_data[2], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
390  cr= (sum + block_s/2)/block_s;
391  // iscore += pix_norm1(&current_mb[2][0], uvstride, block_w>>1) - 2*cr*sum + cr*cr*block_s;
392  }else
393  cb = cr = 0;
394 
395  ic= s->c;
396  ic.bytestream_start=
397  ic.bytestream= i_buffer; //FIXME end/start? and at the other stoo
398  memcpy(i_state, s->block_state, sizeof(s->block_state));
399  if(level!=s->block_max_depth)
400  put_rac(&ic, &i_state[4 + s_context], 1);
401  put_rac(&ic, &i_state[1 + left->type + top->type], 1);
402  put_symbol(&ic, &i_state[32], l-pl , 1);
403  if (s->nb_planes > 2) {
404  put_symbol(&ic, &i_state[64], cb-pcb, 1);
405  put_symbol(&ic, &i_state[96], cr-pcr, 1);
406  }
407  i_len= ic.bytestream - ic.bytestream_start;
408  iscore += (s->lambda2*(get_rac_count(&ic)-base_bits))>>FF_LAMBDA_SHIFT;
409 
410  av_assert1(iscore < 255*255*256 + s->lambda2*10);
411  av_assert1(iscore >= 0);
412  av_assert1(l>=0 && l<=255);
413  av_assert1(pl>=0 && pl<=255);
414 
415  if(level==0){
416  int varc= iscore >> 8;
417  int vard= score >> 8;
418  if (vard <= 64 || vard < varc)
419  c->scene_change_score+= ff_sqrt(vard) - ff_sqrt(varc);
420  else
421  c->scene_change_score+= s->m.qscale;
422  }
423 
424  if(level!=s->block_max_depth){
425  put_rac(&s->c, &s->block_state[4 + s_context], 0);
426  score2 = encode_q_branch(s, level+1, 2*x+0, 2*y+0);
427  score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+0);
428  score2+= encode_q_branch(s, level+1, 2*x+0, 2*y+1);
429  score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+1);
430  score2+= s->lambda2>>FF_LAMBDA_SHIFT; //FIXME exact split overhead
431 
432  if(score2 < score && score2 < iscore)
433  return score2;
434  }
435 
436  if(iscore < score){
437  pred_mv(s, &pmx, &pmy, 0, left, top, tr);
438  memcpy(pbbak, i_buffer, i_len);
439  s->c= ic;
440  s->c.bytestream_start= pbbak_start;
441  s->c.bytestream= pbbak + i_len;
442  set_blocks(s, level, x, y, l, cb, cr, pmx, pmy, 0, BLOCK_INTRA);
443  memcpy(s->block_state, i_state, sizeof(s->block_state));
444  return iscore;
445  }else{
446  memcpy(pbbak, p_buffer, p_len);
447  s->c= pc;
448  s->c.bytestream_start= pbbak_start;
449  s->c.bytestream= pbbak + p_len;
450  set_blocks(s, level, x, y, pl, pcb, pcr, mx, my, best_ref, 0);
451  memcpy(s->block_state, p_state, sizeof(s->block_state));
452  return score;
453  }
454 }
455 
456 static void encode_q_branch2(SnowContext *s, int level, int x, int y){
457  const int w= s->b_width << s->block_max_depth;
458  const int rem_depth= s->block_max_depth - level;
459  const int index= (x + y*w) << rem_depth;
460  int trx= (x+1)<<rem_depth;
461  BlockNode *b= &s->block[index];
462  const BlockNode *left = x ? &s->block[index-1] : &null_block;
463  const BlockNode *top = y ? &s->block[index-w] : &null_block;
464  const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
465  const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
466  int pl = left->color[0];
467  int pcb= left->color[1];
468  int pcr= left->color[2];
469  int pmx, pmy;
470  int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
471  int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 16*!!b->ref;
472  int my_context= av_log2(2*FFABS(left->my - top->my)) + 16*!!b->ref;
473  int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
474 
475  if(s->keyframe){
476  set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
477  return;
478  }
479 
480  if(level!=s->block_max_depth){
481  if(same_block(b,b+1) && same_block(b,b+w) && same_block(b,b+w+1)){
482  put_rac(&s->c, &s->block_state[4 + s_context], 1);
483  }else{
484  put_rac(&s->c, &s->block_state[4 + s_context], 0);
485  encode_q_branch2(s, level+1, 2*x+0, 2*y+0);
486  encode_q_branch2(s, level+1, 2*x+1, 2*y+0);
487  encode_q_branch2(s, level+1, 2*x+0, 2*y+1);
488  encode_q_branch2(s, level+1, 2*x+1, 2*y+1);
489  return;
490  }
491  }
492  if(b->type & BLOCK_INTRA){
493  pred_mv(s, &pmx, &pmy, 0, left, top, tr);
494  put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 1);
495  put_symbol(&s->c, &s->block_state[32], b->color[0]-pl , 1);
496  if (s->nb_planes > 2) {
497  put_symbol(&s->c, &s->block_state[64], b->color[1]-pcb, 1);
498  put_symbol(&s->c, &s->block_state[96], b->color[2]-pcr, 1);
499  }
500  set_blocks(s, level, x, y, b->color[0], b->color[1], b->color[2], pmx, pmy, 0, BLOCK_INTRA);
501  }else{
502  pred_mv(s, &pmx, &pmy, b->ref, left, top, tr);
503  put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 0);
504  if(s->ref_frames > 1)
505  put_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], b->ref, 0);
506  put_symbol(&s->c, &s->block_state[128 + 32*mx_context], b->mx - pmx, 1);
507  put_symbol(&s->c, &s->block_state[128 + 32*my_context], b->my - pmy, 1);
508  set_blocks(s, level, x, y, pl, pcb, pcr, b->mx, b->my, b->ref, 0);
509  }
510 }
511 
512 static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){
513  int i, x2, y2;
514  Plane *p= &s->plane[plane_index];
515  const int block_size = MB_SIZE >> s->block_max_depth;
516  const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
517  const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
518  const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
519  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
520  const int ref_stride= s->current_picture->linesize[plane_index];
521  uint8_t *src= s-> input_picture->data[plane_index];
522  IDWTELEM *dst= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4; //FIXME change to unsigned
523  const int b_stride = s->b_width << s->block_max_depth;
524  const int w= p->width;
525  const int h= p->height;
526  int index= mb_x + mb_y*b_stride;
527  BlockNode *b= &s->block[index];
528  BlockNode backup= *b;
529  int ab=0;
530  int aa=0;
531 
532  av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc stuff above
533 
534  b->type|= BLOCK_INTRA;
535  b->color[plane_index]= 0;
536  memset(dst, 0, obmc_stride*obmc_stride*sizeof(IDWTELEM));
537 
538  for(i=0; i<4; i++){
539  int mb_x2= mb_x + (i &1) - 1;
540  int mb_y2= mb_y + (i>>1) - 1;
541  int x= block_w*mb_x2 + block_w/2;
542  int y= block_h*mb_y2 + block_h/2;
543 
544  add_yblock(s, 0, NULL, dst + (i&1)*block_w + (i>>1)*obmc_stride*block_h, NULL, obmc,
545  x, y, block_w, block_h, w, h, obmc_stride, ref_stride, obmc_stride, mb_x2, mb_y2, 0, 0, plane_index);
546 
547  for(y2= FFMAX(y, 0); y2<FFMIN(h, y+block_h); y2++){
548  for(x2= FFMAX(x, 0); x2<FFMIN(w, x+block_w); x2++){
549  int index= x2-(block_w*mb_x - block_w/2) + (y2-(block_h*mb_y - block_h/2))*obmc_stride;
550  int obmc_v= obmc[index];
551  int d;
552  if(y<0) obmc_v += obmc[index + block_h*obmc_stride];
553  if(x<0) obmc_v += obmc[index + block_w];
554  if(y+block_h>h) obmc_v += obmc[index - block_h*obmc_stride];
555  if(x+block_w>w) obmc_v += obmc[index - block_w];
556  //FIXME precalculate this or simplify it somehow else
557 
558  d = -dst[index] + (1<<(FRAC_BITS-1));
559  dst[index] = d;
560  ab += (src[x2 + y2*ref_stride] - (d>>FRAC_BITS)) * obmc_v;
561  aa += obmc_v * obmc_v; //FIXME precalculate this
562  }
563  }
564  }
565  *b= backup;
566 
567  return av_clip_uint8( ROUNDED_DIV(ab<<LOG2_OBMC_MAX, aa) ); //FIXME we should not need clipping
568 }
569 
570 static inline int get_block_bits(SnowContext *s, int x, int y, int w){
571  const int b_stride = s->b_width << s->block_max_depth;
572  const int b_height = s->b_height<< s->block_max_depth;
573  int index= x + y*b_stride;
574  const BlockNode *b = &s->block[index];
575  const BlockNode *left = x ? &s->block[index-1] : &null_block;
576  const BlockNode *top = y ? &s->block[index-b_stride] : &null_block;
577  const BlockNode *tl = y && x ? &s->block[index-b_stride-1] : left;
578  const BlockNode *tr = y && x+w<b_stride ? &s->block[index-b_stride+w] : tl;
579  int dmx, dmy;
580 // int mx_context= av_log2(2*FFABS(left->mx - top->mx));
581 // int my_context= av_log2(2*FFABS(left->my - top->my));
582 
583  if(x<0 || x>=b_stride || y>=b_height)
584  return 0;
585 /*
586 1 0 0
587 01X 1-2 1
588 001XX 3-6 2-3
589 0001XXX 7-14 4-7
590 00001XXXX 15-30 8-15
591 */
592 //FIXME try accurate rate
593 //FIXME intra and inter predictors if surrounding blocks are not the same type
594  if(b->type & BLOCK_INTRA){
595  return 3+2*( av_log2(2*FFABS(left->color[0] - b->color[0]))
596  + av_log2(2*FFABS(left->color[1] - b->color[1]))
597  + av_log2(2*FFABS(left->color[2] - b->color[2])));
598  }else{
599  pred_mv(s, &dmx, &dmy, b->ref, left, top, tr);
600  dmx-= b->mx;
601  dmy-= b->my;
602  return 2*(1 + av_log2(2*FFABS(dmx)) //FIXME kill the 2* can be merged in lambda
603  + av_log2(2*FFABS(dmy))
604  + av_log2(2*b->ref));
605  }
606 }
607 
608 static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, uint8_t (*obmc_edged)[MB_SIZE * 2]){
609  Plane *p= &s->plane[plane_index];
610  const int block_size = MB_SIZE >> s->block_max_depth;
611  const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
612  const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
613  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
614  const int ref_stride= s->current_picture->linesize[plane_index];
615  uint8_t *dst= s->current_picture->data[plane_index];
616  uint8_t *src= s-> input_picture->data[plane_index];
617  IDWTELEM *pred= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4;
618  uint8_t *cur = s->scratchbuf;
620  const int b_stride = s->b_width << s->block_max_depth;
621  const int b_height = s->b_height<< s->block_max_depth;
622  const int w= p->width;
623  const int h= p->height;
624  int distortion;
625  int rate= 0;
626  const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
627  int sx= block_w*mb_x - block_w/2;
628  int sy= block_h*mb_y - block_h/2;
629  int x0= FFMAX(0,-sx);
630  int y0= FFMAX(0,-sy);
631  int x1= FFMIN(block_w*2, w-sx);
632  int y1= FFMIN(block_h*2, h-sy);
633  int i,x,y;
634 
635  av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below chckinhg only block_w
636 
637  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);
638 
639  for(y=y0; y<y1; y++){
640  const uint8_t *obmc1= obmc_edged[y];
641  const IDWTELEM *pred1 = pred + y*obmc_stride;
642  uint8_t *cur1 = cur + y*ref_stride;
643  uint8_t *dst1 = dst + sx + (sy+y)*ref_stride;
644  for(x=x0; x<x1; x++){
645 #if FRAC_BITS >= LOG2_OBMC_MAX
646  int v = (cur1[x] * obmc1[x]) << (FRAC_BITS - LOG2_OBMC_MAX);
647 #else
648  int v = (cur1[x] * obmc1[x] + (1<<(LOG2_OBMC_MAX - FRAC_BITS-1))) >> (LOG2_OBMC_MAX - FRAC_BITS);
649 #endif
650  v = (v + pred1[x]) >> FRAC_BITS;
651  if(v&(~255)) v= ~(v>>31);
652  dst1[x] = v;
653  }
654  }
655 
656  /* copy the regions where obmc[] = (uint8_t)256 */
657  if(LOG2_OBMC_MAX == 8
658  && (mb_x == 0 || mb_x == b_stride-1)
659  && (mb_y == 0 || mb_y == b_height-1)){
660  if(mb_x == 0)
661  x1 = block_w;
662  else
663  x0 = block_w;
664  if(mb_y == 0)
665  y1 = block_h;
666  else
667  y0 = block_h;
668  for(y=y0; y<y1; y++)
669  memcpy(dst + sx+x0 + (sy+y)*ref_stride, cur + x0 + y*ref_stride, x1-x0);
670  }
671 
672  if(block_w==16){
673  /* FIXME rearrange dsputil to fit 32x32 cmp functions */
674  /* FIXME check alignment of the cmp wavelet vs the encoding wavelet */
675  /* FIXME cmps overlap but do not cover the wavelet's whole support.
676  * So improving the score of one block is not strictly guaranteed
677  * to improve the score of the whole frame, thus iterative motion
678  * estimation does not always converge. */
679  if(s->avctx->me_cmp == FF_CMP_W97)
680  distortion = ff_w97_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
681  else if(s->avctx->me_cmp == FF_CMP_W53)
682  distortion = ff_w53_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
683  else{
684  distortion = 0;
685  for(i=0; i<4; i++){
686  int off = sx+16*(i&1) + (sy+16*(i>>1))*ref_stride;
687  distortion += s->mecc.me_cmp[0](&s->m, src + off, dst + off, ref_stride, 16);
688  }
689  }
690  }else{
691  av_assert2(block_w==8);
692  distortion = s->mecc.me_cmp[0](&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, block_w*2);
693  }
694 
695  if(plane_index==0){
696  for(i=0; i<4; i++){
697 /* ..RRr
698  * .RXx.
699  * rxx..
700  */
701  rate += get_block_bits(s, mb_x + (i&1) - (i>>1), mb_y + (i>>1), 1);
702  }
703  if(mb_x == b_stride-2)
704  rate += get_block_bits(s, mb_x + 1, mb_y + 1, 1);
705  }
706  return distortion + rate*penalty_factor;
707 }
708 
709 static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){
710  int i, y2;
711  Plane *p= &s->plane[plane_index];
712  const int block_size = MB_SIZE >> s->block_max_depth;
713  const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
714  const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
715  const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
716  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
717  const int ref_stride= s->current_picture->linesize[plane_index];
718  uint8_t *dst= s->current_picture->data[plane_index];
719  uint8_t *src= s-> input_picture->data[plane_index];
720  //FIXME zero_dst is const but add_yblock changes dst if add is 0 (this is never the case for dst=zero_dst
721  // const has only been removed from zero_dst to suppress a warning
722  static IDWTELEM zero_dst[4096]; //FIXME
723  const int b_stride = s->b_width << s->block_max_depth;
724  const int w= p->width;
725  const int h= p->height;
726  int distortion= 0;
727  int rate= 0;
728  const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
729 
730  av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below
731 
732  for(i=0; i<9; i++){
733  int mb_x2= mb_x + (i%3) - 1;
734  int mb_y2= mb_y + (i/3) - 1;
735  int x= block_w*mb_x2 + block_w/2;
736  int y= block_h*mb_y2 + block_h/2;
737 
738  add_yblock(s, 0, NULL, zero_dst, dst, obmc,
739  x, y, block_w, block_h, w, h, /*dst_stride*/0, ref_stride, obmc_stride, mb_x2, mb_y2, 1, 1, plane_index);
740 
741  //FIXME find a cleaner/simpler way to skip the outside stuff
742  for(y2= y; y2<0; y2++)
743  memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
744  for(y2= h; y2<y+block_h; y2++)
745  memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
746  if(x<0){
747  for(y2= y; y2<y+block_h; y2++)
748  memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, -x);
749  }
750  if(x+block_w > w){
751  for(y2= y; y2<y+block_h; y2++)
752  memcpy(dst + w + y2*ref_stride, src + w + y2*ref_stride, x+block_w - w);
753  }
754 
755  av_assert1(block_w== 8 || block_w==16);
756  distortion += s->mecc.me_cmp[block_w==8](&s->m, src + x + y*ref_stride, dst + x + y*ref_stride, ref_stride, block_h);
757  }
758 
759  if(plane_index==0){
760  BlockNode *b= &s->block[mb_x+mb_y*b_stride];
761  int merged= same_block(b,b+1) && same_block(b,b+b_stride) && same_block(b,b+b_stride+1);
762 
763 /* ..RRRr
764  * .RXXx.
765  * .RXXx.
766  * rxxx.
767  */
768  if(merged)
769  rate = get_block_bits(s, mb_x, mb_y, 2);
770  for(i=merged?4:0; i<9; i++){
771  static const int dxy[9][2] = {{0,0},{1,0},{0,1},{1,1},{2,0},{2,1},{-1,2},{0,2},{1,2}};
772  rate += get_block_bits(s, mb_x + dxy[i][0], mb_y + dxy[i][1], 1);
773  }
774  }
775  return distortion + rate*penalty_factor;
776 }
777 
778 static int encode_subband_c0run(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
779  const int w= b->width;
780  const int h= b->height;
781  int x, y;
782 
783  if(1){
784  int run=0;
785  int *runs = s->run_buffer;
786  int run_index=0;
787  int max_index;
788 
789  for(y=0; y<h; y++){
790  for(x=0; x<w; x++){
791  int v, p=0;
792  int /*ll=0, */l=0, lt=0, t=0, rt=0;
793  v= src[x + y*stride];
794 
795  if(y){
796  t= src[x + (y-1)*stride];
797  if(x){
798  lt= src[x - 1 + (y-1)*stride];
799  }
800  if(x + 1 < w){
801  rt= src[x + 1 + (y-1)*stride];
802  }
803  }
804  if(x){
805  l= src[x - 1 + y*stride];
806  /*if(x > 1){
807  if(orientation==1) ll= src[y + (x-2)*stride];
808  else ll= src[x - 2 + y*stride];
809  }*/
810  }
811  if(parent){
812  int px= x>>1;
813  int py= y>>1;
814  if(px<b->parent->width && py<b->parent->height)
815  p= parent[px + py*2*stride];
816  }
817  if(!(/*ll|*/l|lt|t|rt|p)){
818  if(v){
819  runs[run_index++]= run;
820  run=0;
821  }else{
822  run++;
823  }
824  }
825  }
826  }
827  max_index= run_index;
828  runs[run_index++]= run;
829  run_index=0;
830  run= runs[run_index++];
831 
832  put_symbol2(&s->c, b->state[30], max_index, 0);
833  if(run_index <= max_index)
834  put_symbol2(&s->c, b->state[1], run, 3);
835 
836  for(y=0; y<h; y++){
837  if(s->c.bytestream_end - s->c.bytestream < w*40){
838  av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
839  return AVERROR(ENOMEM);
840  }
841  for(x=0; x<w; x++){
842  int v, p=0;
843  int /*ll=0, */l=0, lt=0, t=0, rt=0;
844  v= src[x + y*stride];
845 
846  if(y){
847  t= src[x + (y-1)*stride];
848  if(x){
849  lt= src[x - 1 + (y-1)*stride];
850  }
851  if(x + 1 < w){
852  rt= src[x + 1 + (y-1)*stride];
853  }
854  }
855  if(x){
856  l= src[x - 1 + y*stride];
857  /*if(x > 1){
858  if(orientation==1) ll= src[y + (x-2)*stride];
859  else ll= src[x - 2 + y*stride];
860  }*/
861  }
862  if(parent){
863  int px= x>>1;
864  int py= y>>1;
865  if(px<b->parent->width && py<b->parent->height)
866  p= parent[px + py*2*stride];
867  }
868  if(/*ll|*/l|lt|t|rt|p){
869  int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
870 
871  put_rac(&s->c, &b->state[0][context], !!v);
872  }else{
873  if(!run){
874  run= runs[run_index++];
875 
876  if(run_index <= max_index)
877  put_symbol2(&s->c, b->state[1], run, 3);
878  av_assert2(v);
879  }else{
880  run--;
881  av_assert2(!v);
882  }
883  }
884  if(v){
885  int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
886  int l2= 2*FFABS(l) + (l<0);
887  int t2= 2*FFABS(t) + (t<0);
888 
889  put_symbol2(&s->c, b->state[context + 2], FFABS(v)-1, context-4);
890  put_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l2&0xFF] + 3*ff_quant3bA[t2&0xFF]], v<0);
891  }
892  }
893  }
894  }
895  return 0;
896 }
897 
898 static int encode_subband(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
899 // encode_subband_qtree(s, b, src, parent, stride, orientation);
900 // encode_subband_z0run(s, b, src, parent, stride, orientation);
901  return encode_subband_c0run(s, b, src, parent, stride, orientation);
902 // encode_subband_dzr(s, b, src, parent, stride, orientation);
903 }
904 
905 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){
906  const int b_stride= s->b_width << s->block_max_depth;
907  BlockNode *block= &s->block[mb_x + mb_y * b_stride];
908  BlockNode backup= *block;
909  unsigned value;
910  int rd, index;
911 
912  av_assert2(mb_x>=0 && mb_y>=0);
913  av_assert2(mb_x<b_stride);
914 
915  if(intra){
916  block->color[0] = p[0];
917  block->color[1] = p[1];
918  block->color[2] = p[2];
919  block->type |= BLOCK_INTRA;
920  }else{
921  index= (p[0] + 31*p[1]) & (ME_CACHE_SIZE-1);
922  value= s->me_cache_generation + (p[0]>>10) + (p[1]<<6) + (block->ref<<12);
923  if(s->me_cache[index] == value)
924  return 0;
925  s->me_cache[index]= value;
926 
927  block->mx= p[0];
928  block->my= p[1];
929  block->type &= ~BLOCK_INTRA;
930  }
931 
932  rd= get_block_rd(s, mb_x, mb_y, 0, obmc_edged) + s->intra_penalty * !!intra;
933 
934 //FIXME chroma
935  if(rd < *best_rd){
936  *best_rd= rd;
937  return 1;
938  }else{
939  *block= backup;
940  return 0;
941  }
942 }
943 
944 /* special case for int[2] args we discard afterwards,
945  * fixes compilation problem with gcc 2.95 */
946 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){
947  int p[2] = {p0, p1};
948  return check_block(s, mb_x, mb_y, p, 0, obmc_edged, best_rd);
949 }
950 
951 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){
952  const int b_stride= s->b_width << s->block_max_depth;
953  BlockNode *block= &s->block[mb_x + mb_y * b_stride];
954  BlockNode backup[4];
955  unsigned value;
956  int rd, index;
957 
958  /* We don't initialize backup[] during variable declaration, because
959  * that fails to compile on MSVC: "cannot convert from 'BlockNode' to
960  * 'int16_t'". */
961  backup[0] = block[0];
962  backup[1] = block[1];
963  backup[2] = block[b_stride];
964  backup[3] = block[b_stride + 1];
965 
966  av_assert2(mb_x>=0 && mb_y>=0);
967  av_assert2(mb_x<b_stride);
968  av_assert2(((mb_x|mb_y)&1) == 0);
969 
970  index= (p0 + 31*p1) & (ME_CACHE_SIZE-1);
971  value= s->me_cache_generation + (p0>>10) + (p1<<6) + (block->ref<<12);
972  if(s->me_cache[index] == value)
973  return 0;
974  s->me_cache[index]= value;
975 
976  block->mx= p0;
977  block->my= p1;
978  block->ref= ref;
979  block->type &= ~BLOCK_INTRA;
980  block[1]= block[b_stride]= block[b_stride+1]= *block;
981 
982  rd= get_4block_rd(s, mb_x, mb_y, 0);
983 
984 //FIXME chroma
985  if(rd < *best_rd){
986  *best_rd= rd;
987  return 1;
988  }else{
989  block[0]= backup[0];
990  block[1]= backup[1];
991  block[b_stride]= backup[2];
992  block[b_stride+1]= backup[3];
993  return 0;
994  }
995 }
996 
997 static void iterative_me(SnowContext *s){
998  int pass, mb_x, mb_y;
999  const int b_width = s->b_width << s->block_max_depth;
1000  const int b_height= s->b_height << s->block_max_depth;
1001  const int b_stride= b_width;
1002  int color[3];
1003 
1004  {
1005  RangeCoder r = s->c;
1006  uint8_t state[sizeof(s->block_state)];
1007  memcpy(state, s->block_state, sizeof(s->block_state));
1008  for(mb_y= 0; mb_y<s->b_height; mb_y++)
1009  for(mb_x= 0; mb_x<s->b_width; mb_x++)
1010  encode_q_branch(s, 0, mb_x, mb_y);
1011  s->c = r;
1012  memcpy(s->block_state, state, sizeof(s->block_state));
1013  }
1014 
1015  for(pass=0; pass<25; pass++){
1016  int change= 0;
1017 
1018  for(mb_y= 0; mb_y<b_height; mb_y++){
1019  for(mb_x= 0; mb_x<b_width; mb_x++){
1020  int dia_change, i, j, ref;
1021  int best_rd= INT_MAX, ref_rd;
1022  BlockNode backup, ref_b;
1023  const int index= mb_x + mb_y * b_stride;
1024  BlockNode *block= &s->block[index];
1025  BlockNode *tb = mb_y ? &s->block[index-b_stride ] : NULL;
1026  BlockNode *lb = mb_x ? &s->block[index -1] : NULL;
1027  BlockNode *rb = mb_x+1<b_width ? &s->block[index +1] : NULL;
1028  BlockNode *bb = mb_y+1<b_height ? &s->block[index+b_stride ] : NULL;
1029  BlockNode *tlb= mb_x && mb_y ? &s->block[index-b_stride-1] : NULL;
1030  BlockNode *trb= mb_x+1<b_width && mb_y ? &s->block[index-b_stride+1] : NULL;
1031  BlockNode *blb= mb_x && mb_y+1<b_height ? &s->block[index+b_stride-1] : NULL;
1032  BlockNode *brb= mb_x+1<b_width && mb_y+1<b_height ? &s->block[index+b_stride+1] : NULL;
1033  const int b_w= (MB_SIZE >> s->block_max_depth);
1034  uint8_t obmc_edged[MB_SIZE * 2][MB_SIZE * 2];
1035 
1036  if(pass && (block->type & BLOCK_OPT))
1037  continue;
1038  block->type |= BLOCK_OPT;
1039 
1040  backup= *block;
1041 
1042  if(!s->me_cache_generation)
1043  memset(s->me_cache, 0, sizeof(s->me_cache));
1044  s->me_cache_generation += 1<<22;
1045 
1046  //FIXME precalculate
1047  {
1048  int x, y;
1049  for (y = 0; y < b_w * 2; y++)
1050  memcpy(obmc_edged[y], ff_obmc_tab[s->block_max_depth] + y * b_w * 2, b_w * 2);
1051  if(mb_x==0)
1052  for(y=0; y<b_w*2; y++)
1053  memset(obmc_edged[y], obmc_edged[y][0] + obmc_edged[y][b_w-1], b_w);
1054  if(mb_x==b_stride-1)
1055  for(y=0; y<b_w*2; y++)
1056  memset(obmc_edged[y]+b_w, obmc_edged[y][b_w] + obmc_edged[y][b_w*2-1], b_w);
1057  if(mb_y==0){
1058  for(x=0; x<b_w*2; x++)
1059  obmc_edged[0][x] += obmc_edged[b_w-1][x];
1060  for(y=1; y<b_w; y++)
1061  memcpy(obmc_edged[y], obmc_edged[0], b_w*2);
1062  }
1063  if(mb_y==b_height-1){
1064  for(x=0; x<b_w*2; x++)
1065  obmc_edged[b_w*2-1][x] += obmc_edged[b_w][x];
1066  for(y=b_w; y<b_w*2-1; y++)
1067  memcpy(obmc_edged[y], obmc_edged[b_w*2-1], b_w*2);
1068  }
1069  }
1070 
1071  //skip stuff outside the picture
1072  if(mb_x==0 || mb_y==0 || mb_x==b_width-1 || mb_y==b_height-1){
1073  uint8_t *src= s-> input_picture->data[0];
1074  uint8_t *dst= s->current_picture->data[0];
1075  const int stride= s->current_picture->linesize[0];
1076  const int block_w= MB_SIZE >> s->block_max_depth;
1077  const int block_h= MB_SIZE >> s->block_max_depth;
1078  const int sx= block_w*mb_x - block_w/2;
1079  const int sy= block_h*mb_y - block_h/2;
1080  const int w= s->plane[0].width;
1081  const int h= s->plane[0].height;
1082  int y;
1083 
1084  for(y=sy; y<0; y++)
1085  memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1086  for(y=h; y<sy+block_h*2; y++)
1087  memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1088  if(sx<0){
1089  for(y=sy; y<sy+block_h*2; y++)
1090  memcpy(dst + sx + y*stride, src + sx + y*stride, -sx);
1091  }
1092  if(sx+block_w*2 > w){
1093  for(y=sy; y<sy+block_h*2; y++)
1094  memcpy(dst + w + y*stride, src + w + y*stride, sx+block_w*2 - w);
1095  }
1096  }
1097 
1098  // intra(black) = neighbors' contribution to the current block
1099  for(i=0; i < s->nb_planes; i++)
1100  color[i]= get_dc(s, mb_x, mb_y, i);
1101 
1102  // get previous score (cannot be cached due to OBMC)
1103  if(pass > 0 && (block->type&BLOCK_INTRA)){
1104  int color0[3]= {block->color[0], block->color[1], block->color[2]};
1105  check_block(s, mb_x, mb_y, color0, 1, obmc_edged, &best_rd);
1106  }else
1107  check_block_inter(s, mb_x, mb_y, block->mx, block->my, obmc_edged, &best_rd);
1108 
1109  ref_b= *block;
1110  ref_rd= best_rd;
1111  for(ref=0; ref < s->ref_frames; ref++){
1112  int16_t (*mvr)[2]= &s->ref_mvs[ref][index];
1113  if(s->ref_scores[ref][index] > s->ref_scores[ref_b.ref][index]*3/2) //FIXME tune threshold
1114  continue;
1115  block->ref= ref;
1116  best_rd= INT_MAX;
1117 
1118  check_block_inter(s, mb_x, mb_y, mvr[0][0], mvr[0][1], obmc_edged, &best_rd);
1119  check_block_inter(s, mb_x, mb_y, 0, 0, obmc_edged, &best_rd);
1120  if(tb)
1121  check_block_inter(s, mb_x, mb_y, mvr[-b_stride][0], mvr[-b_stride][1], obmc_edged, &best_rd);
1122  if(lb)
1123  check_block_inter(s, mb_x, mb_y, mvr[-1][0], mvr[-1][1], obmc_edged, &best_rd);
1124  if(rb)
1125  check_block_inter(s, mb_x, mb_y, mvr[1][0], mvr[1][1], obmc_edged, &best_rd);
1126  if(bb)
1127  check_block_inter(s, mb_x, mb_y, mvr[b_stride][0], mvr[b_stride][1], obmc_edged, &best_rd);
1128 
1129  /* fullpel ME */
1130  //FIXME avoid subpel interpolation / round to nearest integer
1131  do{
1132  int newx = block->mx;
1133  int newy = block->my;
1134  int dia_size = s->iterative_dia_size ? s->iterative_dia_size : FFMAX(s->avctx->dia_size, 1);
1135  dia_change=0;
1136  for(i=0; i < dia_size; i++){
1137  for(j=0; j<i; j++){
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*(i-j), newy-(4*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  dia_change |= check_block_inter(s, mb_x, mb_y, newx+(4*j), newy-4*(i-j), obmc_edged, &best_rd);
1142  }
1143  }
1144  }while(dia_change);
1145  /* subpel ME */
1146  do{
1147  static const int square[8][2]= {{+1, 0},{-1, 0},{ 0,+1},{ 0,-1},{+1,+1},{-1,-1},{+1,-1},{-1,+1},};
1148  dia_change=0;
1149  for(i=0; i<8; i++)
1150  dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+square[i][0], block->my+square[i][1], obmc_edged, &best_rd);
1151  }while(dia_change);
1152  //FIXME or try the standard 2 pass qpel or similar
1153 
1154  mvr[0][0]= block->mx;
1155  mvr[0][1]= block->my;
1156  if(ref_rd > best_rd){
1157  ref_rd= best_rd;
1158  ref_b= *block;
1159  }
1160  }
1161  best_rd= ref_rd;
1162  *block= ref_b;
1163  check_block(s, mb_x, mb_y, color, 1, obmc_edged, &best_rd);
1164  //FIXME RD style color selection
1165  if(!same_block(block, &backup)){
1166  if(tb ) tb ->type &= ~BLOCK_OPT;
1167  if(lb ) lb ->type &= ~BLOCK_OPT;
1168  if(rb ) rb ->type &= ~BLOCK_OPT;
1169  if(bb ) bb ->type &= ~BLOCK_OPT;
1170  if(tlb) tlb->type &= ~BLOCK_OPT;
1171  if(trb) trb->type &= ~BLOCK_OPT;
1172  if(blb) blb->type &= ~BLOCK_OPT;
1173  if(brb) brb->type &= ~BLOCK_OPT;
1174  change ++;
1175  }
1176  }
1177  }
1178  av_log(s->avctx, AV_LOG_DEBUG, "pass:%d changed:%d\n", pass, change);
1179  if(!change)
1180  break;
1181  }
1182 
1183  if(s->block_max_depth == 1){
1184  int change= 0;
1185  for(mb_y= 0; mb_y<b_height; mb_y+=2){
1186  for(mb_x= 0; mb_x<b_width; mb_x+=2){
1187  int i;
1188  int best_rd, init_rd;
1189  const int index= mb_x + mb_y * b_stride;
1190  BlockNode *b[4];
1191 
1192  b[0]= &s->block[index];
1193  b[1]= b[0]+1;
1194  b[2]= b[0]+b_stride;
1195  b[3]= b[2]+1;
1196  if(same_block(b[0], b[1]) &&
1197  same_block(b[0], b[2]) &&
1198  same_block(b[0], b[3]))
1199  continue;
1200 
1201  if(!s->me_cache_generation)
1202  memset(s->me_cache, 0, sizeof(s->me_cache));
1203  s->me_cache_generation += 1<<22;
1204 
1205  init_rd= best_rd= get_4block_rd(s, mb_x, mb_y, 0);
1206 
1207  //FIXME more multiref search?
1208  check_4block_inter(s, mb_x, mb_y,
1209  (b[0]->mx + b[1]->mx + b[2]->mx + b[3]->mx + 2) >> 2,
1210  (b[0]->my + b[1]->my + b[2]->my + b[3]->my + 2) >> 2, 0, &best_rd);
1211 
1212  for(i=0; i<4; i++)
1213  if(!(b[i]->type&BLOCK_INTRA))
1214  check_4block_inter(s, mb_x, mb_y, b[i]->mx, b[i]->my, b[i]->ref, &best_rd);
1215 
1216  if(init_rd != best_rd)
1217  change++;
1218  }
1219  }
1220  av_log(s->avctx, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4);
1221  }
1222 }
1223 
1224 static void encode_blocks(SnowContext *s, int search){
1225  int x, y;
1226  int w= s->b_width;
1227  int h= s->b_height;
1228 
1229  if(s->motion_est == FF_ME_ITER && !s->keyframe && search)
1230  iterative_me(s);
1231 
1232  for(y=0; y<h; y++){
1233  if(s->c.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit
1234  av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
1235  return;
1236  }
1237  for(x=0; x<w; x++){
1238  if(s->motion_est == FF_ME_ITER || !search)
1239  encode_q_branch2(s, 0, x, y);
1240  else
1241  encode_q_branch (s, 0, x, y);
1242  }
1243  }
1244 }
1245 
1246 static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias){
1247  const int w= b->width;
1248  const int h= b->height;
1249  const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1250  const int qmul= ff_qexp[qlog&(QROOT-1)]<<((qlog>>QSHIFT) + ENCODER_EXTRA_BITS);
1251  int x,y, thres1, thres2;
1252 
1253  if(s->qlog == LOSSLESS_QLOG){
1254  for(y=0; y<h; y++)
1255  for(x=0; x<w; x++)
1256  dst[x + y*stride]= src[x + y*stride];
1257  return;
1258  }
1259 
1260  bias= bias ? 0 : (3*qmul)>>3;
1261  thres1= ((qmul - bias)>>QEXPSHIFT) - 1;
1262  thres2= 2*thres1;
1263 
1264  if(!bias){
1265  for(y=0; y<h; y++){
1266  for(x=0; x<w; x++){
1267  int i= src[x + y*stride];
1268 
1269  if((unsigned)(i+thres1) > thres2){
1270  if(i>=0){
1271  i<<= QEXPSHIFT;
1272  i/= qmul; //FIXME optimize
1273  dst[x + y*stride]= i;
1274  }else{
1275  i= -i;
1276  i<<= QEXPSHIFT;
1277  i/= qmul; //FIXME optimize
1278  dst[x + y*stride]= -i;
1279  }
1280  }else
1281  dst[x + y*stride]= 0;
1282  }
1283  }
1284  }else{
1285  for(y=0; y<h; y++){
1286  for(x=0; x<w; x++){
1287  int i= src[x + y*stride];
1288 
1289  if((unsigned)(i+thres1) > thres2){
1290  if(i>=0){
1291  i<<= QEXPSHIFT;
1292  i= (i + bias) / qmul; //FIXME optimize
1293  dst[x + y*stride]= i;
1294  }else{
1295  i= -i;
1296  i<<= QEXPSHIFT;
1297  i= (i + bias) / qmul; //FIXME optimize
1298  dst[x + y*stride]= -i;
1299  }
1300  }else
1301  dst[x + y*stride]= 0;
1302  }
1303  }
1304  }
1305 }
1306 
1307 static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride){
1308  const int w= b->width;
1309  const int h= b->height;
1310  const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1311  const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1312  const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
1313  int x,y;
1314 
1315  if(s->qlog == LOSSLESS_QLOG) return;
1316 
1317  for(y=0; y<h; y++){
1318  for(x=0; x<w; x++){
1319  int i= src[x + y*stride];
1320  if(i<0){
1321  src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias
1322  }else if(i>0){
1323  src[x + y*stride]= (( i*qmul + qadd)>>(QEXPSHIFT));
1324  }
1325  }
1326  }
1327 }
1328 
1329 static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1330  const int w= b->width;
1331  const int h= b->height;
1332  int x,y;
1333 
1334  for(y=h-1; y>=0; y--){
1335  for(x=w-1; x>=0; x--){
1336  int i= x + y*stride;
1337 
1338  if(x){
1339  if(use_median){
1340  if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1341  else src[i] -= src[i - 1];
1342  }else{
1343  if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1344  else src[i] -= src[i - 1];
1345  }
1346  }else{
1347  if(y) src[i] -= src[i - stride];
1348  }
1349  }
1350  }
1351 }
1352 
1353 static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1354  const int w= b->width;
1355  const int h= b->height;
1356  int x,y;
1357 
1358  for(y=0; y<h; y++){
1359  for(x=0; x<w; x++){
1360  int i= x + y*stride;
1361 
1362  if(x){
1363  if(use_median){
1364  if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1365  else src[i] += src[i - 1];
1366  }else{
1367  if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1368  else src[i] += src[i - 1];
1369  }
1370  }else{
1371  if(y) src[i] += src[i - stride];
1372  }
1373  }
1374  }
1375 }
1376 
1377 static void encode_qlogs(SnowContext *s){
1378  int plane_index, level, orientation;
1379 
1380  for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1381  for(level=0; level<s->spatial_decomposition_count; level++){
1382  for(orientation=level ? 1:0; orientation<4; orientation++){
1383  if(orientation==2) continue;
1384  put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1);
1385  }
1386  }
1387  }
1388 }
1389 
1390 static void encode_header(SnowContext *s){
1391  int plane_index, i;
1392  uint8_t kstate[32];
1393 
1394  memset(kstate, MID_STATE, sizeof(kstate));
1395 
1396  put_rac(&s->c, kstate, s->keyframe);
1397  if(s->keyframe || s->always_reset){
1400  s->last_qlog=
1401  s->last_qbias=
1402  s->last_mv_scale=
1403  s->last_block_max_depth= 0;
1404  for(plane_index=0; plane_index<2; plane_index++){
1405  Plane *p= &s->plane[plane_index];
1406  p->last_htaps=0;
1407  p->last_diag_mc=0;
1408  memset(p->last_hcoeff, 0, sizeof(p->last_hcoeff));
1409  }
1410  }
1411  if(s->keyframe){
1412  put_symbol(&s->c, s->header_state, s->version, 0);
1413  put_rac(&s->c, s->header_state, s->always_reset);
1417  put_symbol(&s->c, s->header_state, s->colorspace_type, 0);
1418  if (s->nb_planes > 2) {
1419  put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0);
1420  put_symbol(&s->c, s->header_state, s->chroma_v_shift, 0);
1421  }
1423 // put_rac(&s->c, s->header_state, s->rate_scalability);
1424  put_symbol(&s->c, s->header_state, s->max_ref_frames-1, 0);
1425 
1426  encode_qlogs(s);
1427  }
1428 
1429  if(!s->keyframe){
1430  int update_mc=0;
1431  for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1432  Plane *p= &s->plane[plane_index];
1433  update_mc |= p->last_htaps != p->htaps;
1434  update_mc |= p->last_diag_mc != p->diag_mc;
1435  update_mc |= !!memcmp(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1436  }
1437  put_rac(&s->c, s->header_state, update_mc);
1438  if(update_mc){
1439  for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1440  Plane *p= &s->plane[plane_index];
1441  put_rac(&s->c, s->header_state, p->diag_mc);
1442  put_symbol(&s->c, s->header_state, p->htaps/2-1, 0);
1443  for(i= p->htaps/2; i; i--)
1444  put_symbol(&s->c, s->header_state, FFABS(p->hcoeff[i]), 0);
1445  }
1446  }
1448  put_rac(&s->c, s->header_state, 1);
1450  encode_qlogs(s);
1451  }else
1452  put_rac(&s->c, s->header_state, 0);
1453  }
1454 
1456  put_symbol(&s->c, s->header_state, s->qlog - s->last_qlog , 1);
1457  put_symbol(&s->c, s->header_state, s->mv_scale - s->last_mv_scale, 1);
1458  put_symbol(&s->c, s->header_state, s->qbias - s->last_qbias , 1);
1460 
1461 }
1462 
1464  int plane_index;
1465 
1466  if(!s->keyframe){
1467  for(plane_index=0; plane_index<2; plane_index++){
1468  Plane *p= &s->plane[plane_index];
1469  p->last_diag_mc= p->diag_mc;
1470  p->last_htaps = p->htaps;
1471  memcpy(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1472  }
1473  }
1474 
1476  s->last_qlog = s->qlog;
1477  s->last_qbias = s->qbias;
1478  s->last_mv_scale = s->mv_scale;
1481 }
1482 
1483 static int qscale2qlog(int qscale){
1484  return lrint(QROOT*log2(qscale / (float)FF_QP2LAMBDA))
1485  + 61*QROOT/8; ///< 64 > 60
1486 }
1487 
1489 {
1490  /* Estimate the frame's complexity as a sum of weighted dwt coefficients.
1491  * FIXME we know exact mv bits at this point,
1492  * but ratecontrol isn't set up to include them. */
1493  uint32_t coef_sum= 0;
1494  int level, orientation, delta_qlog;
1495 
1496  for(level=0; level<s->spatial_decomposition_count; level++){
1497  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1498  SubBand *b= &s->plane[0].band[level][orientation];
1499  IDWTELEM *buf= b->ibuf;
1500  const int w= b->width;
1501  const int h= b->height;
1502  const int stride= b->stride;
1503  const int qlog= av_clip(2*QROOT + b->qlog, 0, QROOT*16);
1504  const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1505  const int qdiv= (1<<16)/qmul;
1506  int x, y;
1507  //FIXME this is ugly
1508  for(y=0; y<h; y++)
1509  for(x=0; x<w; x++)
1510  buf[x+y*stride]= b->buf[x+y*stride];
1511  if(orientation==0)
1512  decorrelate(s, b, buf, stride, 1, 0);
1513  for(y=0; y<h; y++)
1514  for(x=0; x<w; x++)
1515  coef_sum+= abs(buf[x+y*stride]) * qdiv >> 16;
1516  }
1517  }
1518 
1519  /* ugly, ratecontrol just takes a sqrt again */
1520  av_assert0(coef_sum < INT_MAX);
1521  coef_sum = (uint64_t)coef_sum * coef_sum >> 16;
1522 
1523  if(pict->pict_type == AV_PICTURE_TYPE_I){
1524  s->m.current_picture.mb_var_sum= coef_sum;
1526  }else{
1527  s->m.current_picture.mc_mb_var_sum= coef_sum;
1529  }
1530 
1531  pict->quality= ff_rate_estimate_qscale(&s->m, 1);
1532  if (pict->quality < 0)
1533  return INT_MIN;
1534  s->lambda= pict->quality * 3/2;
1535  delta_qlog= qscale2qlog(pict->quality) - s->qlog;
1536  s->qlog+= delta_qlog;
1537  return delta_qlog;
1538 }
1539 
1541  int width = p->width;
1542  int height= p->height;
1543  int level, orientation, x, y;
1544 
1545  for(level=0; level<s->spatial_decomposition_count; level++){
1546  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1547  SubBand *b= &p->band[level][orientation];
1548  IDWTELEM *ibuf= b->ibuf;
1549  int64_t error=0;
1550 
1551  memset(s->spatial_idwt_buffer, 0, sizeof(*s->spatial_idwt_buffer)*width*height);
1552  ibuf[b->width/2 + b->height/2*b->stride]= 256*16;
1554  for(y=0; y<height; y++){
1555  for(x=0; x<width; x++){
1556  int64_t d= s->spatial_idwt_buffer[x + y*width]*16;
1557  error += d*d;
1558  }
1559  }
1560 
1561  b->qlog= (int)(QROOT * log2(352256.0/sqrt(error)) + 0.5);
1562  }
1563  }
1564 }
1565 
1567  const AVFrame *pict, int *got_packet)
1568 {
1569  SnowContext *s = avctx->priv_data;
1570  RangeCoder * const c= &s->c;
1571  AVFrame *pic;
1572  const int width= s->avctx->width;
1573  const int height= s->avctx->height;
1574  int level, orientation, plane_index, i, y, ret;
1575  uint8_t rc_header_bak[sizeof(s->header_state)];
1576  uint8_t rc_block_bak[sizeof(s->block_state)];
1577 
1578  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)
1579  return ret;
1580 
1581  ff_init_range_encoder(c, pkt->data, pkt->size);
1582  ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1583 
1584  for(i=0; i < s->nb_planes; i++){
1585  int hshift= i ? s->chroma_h_shift : 0;
1586  int vshift= i ? s->chroma_v_shift : 0;
1587  for(y=0; y<AV_CEIL_RSHIFT(height, vshift); y++)
1588  memcpy(&s->input_picture->data[i][y * s->input_picture->linesize[i]],
1589  &pict->data[i][y * pict->linesize[i]],
1590  AV_CEIL_RSHIFT(width, hshift));
1592  AV_CEIL_RSHIFT(width, hshift), AV_CEIL_RSHIFT(height, vshift),
1593  EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
1594  EDGE_TOP | EDGE_BOTTOM);
1595 
1596  }
1597  emms_c();
1598  pic = s->input_picture;
1599  pic->pict_type = pict->pict_type;
1600  pic->quality = pict->quality;
1601 
1602  s->m.picture_number= avctx->frame_number;
1603  if(avctx->flags&AV_CODEC_FLAG_PASS2){
1605  s->keyframe = pic->pict_type == AV_PICTURE_TYPE_I;
1606  if(!(avctx->flags&AV_CODEC_FLAG_QSCALE)) {
1607  pic->quality = ff_rate_estimate_qscale(&s->m, 0);
1608  if (pic->quality < 0)
1609  return -1;
1610  }
1611  }else{
1612  s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
1614  }
1615 
1616  if(s->pass1_rc && avctx->frame_number == 0)
1617  pic->quality = 2*FF_QP2LAMBDA;
1618  if (pic->quality) {
1619  s->qlog = qscale2qlog(pic->quality);
1620  s->lambda = pic->quality * 3/2;
1621  }
1622  if (s->qlog < 0 || (!pic->quality && (avctx->flags & AV_CODEC_FLAG_QSCALE))) {
1623  s->qlog= LOSSLESS_QLOG;
1624  s->lambda = 0;
1625  }//else keep previous frame's qlog until after motion estimation
1626 
1627  if (s->current_picture->data[0]) {
1628  int w = s->avctx->width;
1629  int h = s->avctx->height;
1630 
1632  s->current_picture->linesize[0], w , h ,
1634  if (s->current_picture->data[2]) {
1641  }
1642  emms_c();
1643  }
1644 
1646 #if FF_API_CODED_FRAME
1648  av_frame_unref(avctx->coded_frame);
1649  ret = av_frame_ref(avctx->coded_frame, s->current_picture);
1651 #endif
1652  if (ret < 0)
1653  return ret;
1654 
1657  s->m.current_picture.f->pts = pict->pts;
1658  if(pic->pict_type == AV_PICTURE_TYPE_P){
1659  int block_width = (width +15)>>4;
1660  int block_height= (height+15)>>4;
1661  int stride= s->current_picture->linesize[0];
1662 
1664  av_assert0(s->last_picture[0]->data[0]);
1665 
1666  s->m.avctx= s->avctx;
1667  s->m. last_picture.f = s->last_picture[0];
1668  s->m. new_picture.f = s->input_picture;
1669  s->m. last_picture_ptr= &s->m. last_picture;
1670  s->m.linesize = stride;
1671  s->m.uvlinesize= s->current_picture->linesize[1];
1672  s->m.width = width;
1673  s->m.height= height;
1674  s->m.mb_width = block_width;
1675  s->m.mb_height= block_height;
1676  s->m.mb_stride= s->m.mb_width+1;
1677  s->m.b8_stride= 2*s->m.mb_width+1;
1678  s->m.f_code=1;
1679  s->m.pict_type = pic->pict_type;
1680  s->m.motion_est= s->motion_est;
1681  s->m.me.scene_change_score=0;
1682  s->m.me.dia_size = avctx->dia_size;
1684  s->m.out_format= FMT_H263;
1685  s->m.unrestricted_mv= 1;
1686 
1687  s->m.lambda = s->lambda;
1688  s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
1689  s->lambda2= s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
1690 
1691  s->m.mecc= s->mecc; //move
1692  s->m.qdsp= s->qdsp; //move
1693  s->m.hdsp = s->hdsp;
1694  ff_init_me(&s->m);
1695  s->hdsp = s->m.hdsp;
1696  s->mecc= s->m.mecc;
1697  }
1698 
1699  if(s->pass1_rc){
1700  memcpy(rc_header_bak, s->header_state, sizeof(s->header_state));
1701  memcpy(rc_block_bak, s->block_state, sizeof(s->block_state));
1702  }
1703 
1704 redo_frame:
1705 
1707 
1708  while( !(width >>(s->chroma_h_shift + s->spatial_decomposition_count))
1709  || !(height>>(s->chroma_v_shift + s->spatial_decomposition_count)))
1711 
1712  if (s->spatial_decomposition_count <= 0) {
1713  av_log(avctx, AV_LOG_ERROR, "Resolution too low\n");
1714  return AVERROR(EINVAL);
1715  }
1716 
1717  s->m.pict_type = pic->pict_type;
1718  s->qbias = pic->pict_type == AV_PICTURE_TYPE_P ? 2 : 0;
1719 
1721 
1723  for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1724  calculate_visual_weight(s, &s->plane[plane_index]);
1725  }
1726  }
1727 
1728  encode_header(s);
1729  s->m.misc_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1730  encode_blocks(s, 1);
1731  s->m.mv_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits;
1732 
1733  for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1734  Plane *p= &s->plane[plane_index];
1735  int w= p->width;
1736  int h= p->height;
1737  int x, y;
1738 // int bits= put_bits_count(&s->c.pb);
1739 
1740  if (!s->memc_only) {
1741  //FIXME optimize
1742  if(pict->data[plane_index]) //FIXME gray hack
1743  for(y=0; y<h; y++){
1744  for(x=0; x<w; x++){
1745  s->spatial_idwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<FRAC_BITS;
1746  }
1747  }
1748  predict_plane(s, s->spatial_idwt_buffer, plane_index, 0);
1749 
1750 #if FF_API_PRIVATE_OPT
1755 #endif
1756 
1757  if( plane_index==0
1758  && pic->pict_type == AV_PICTURE_TYPE_P
1759  && !(avctx->flags&AV_CODEC_FLAG_PASS2)
1761  ff_init_range_encoder(c, pkt->data, pkt->size);
1762  ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1764  s->keyframe=1;
1765  s->current_picture->key_frame=1;
1766  goto redo_frame;
1767  }
1768 
1769  if(s->qlog == LOSSLESS_QLOG){
1770  for(y=0; y<h; y++){
1771  for(x=0; x<w; x++){
1772  s->spatial_dwt_buffer[y*w + x]= (s->spatial_idwt_buffer[y*w + x] + (1<<(FRAC_BITS-1))-1)>>FRAC_BITS;
1773  }
1774  }
1775  }else{
1776  for(y=0; y<h; y++){
1777  for(x=0; x<w; x++){
1778  s->spatial_dwt_buffer[y*w + x]= s->spatial_idwt_buffer[y*w + x] * (1 << ENCODER_EXTRA_BITS);
1779  }
1780  }
1781  }
1782 
1784 
1785  if(s->pass1_rc && plane_index==0){
1786  int delta_qlog = ratecontrol_1pass(s, pic);
1787  if (delta_qlog <= INT_MIN)
1788  return -1;
1789  if(delta_qlog){
1790  //reordering qlog in the bitstream would eliminate this reset
1791  ff_init_range_encoder(c, pkt->data, pkt->size);
1792  memcpy(s->header_state, rc_header_bak, sizeof(s->header_state));
1793  memcpy(s->block_state, rc_block_bak, sizeof(s->block_state));
1794  encode_header(s);
1795  encode_blocks(s, 0);
1796  }
1797  }
1798 
1799  for(level=0; level<s->spatial_decomposition_count; level++){
1800  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1801  SubBand *b= &p->band[level][orientation];
1802 
1803  quantize(s, b, b->ibuf, b->buf, b->stride, s->qbias);
1804  if(orientation==0)
1805  decorrelate(s, b, b->ibuf, b->stride, pic->pict_type == AV_PICTURE_TYPE_P, 0);
1806  if (!s->no_bitstream)
1807  encode_subband(s, b, b->ibuf, b->parent ? b->parent->ibuf : NULL, b->stride, orientation);
1808  av_assert0(b->parent==NULL || b->parent->stride == b->stride*2);
1809  if(orientation==0)
1810  correlate(s, b, b->ibuf, b->stride, 1, 0);
1811  }
1812  }
1813 
1814  for(level=0; level<s->spatial_decomposition_count; level++){
1815  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1816  SubBand *b= &p->band[level][orientation];
1817 
1818  dequantize(s, b, b->ibuf, b->stride);
1819  }
1820  }
1821 
1823  if(s->qlog == LOSSLESS_QLOG){
1824  for(y=0; y<h; y++){
1825  for(x=0; x<w; x++){
1826  s->spatial_idwt_buffer[y*w + x]<<=FRAC_BITS;
1827  }
1828  }
1829  }
1830  predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1831  }else{
1832  //ME/MC only
1833  if(pic->pict_type == AV_PICTURE_TYPE_I){
1834  for(y=0; y<h; y++){
1835  for(x=0; x<w; x++){
1836  s->current_picture->data[plane_index][y*s->current_picture->linesize[plane_index] + x]=
1837  pict->data[plane_index][y*pict->linesize[plane_index] + x];
1838  }
1839  }
1840  }else{
1841  memset(s->spatial_idwt_buffer, 0, sizeof(IDWTELEM)*w*h);
1842  predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1843  }
1844  }
1845  if(s->avctx->flags&AV_CODEC_FLAG_PSNR){
1846  int64_t error= 0;
1847 
1848  if(pict->data[plane_index]) //FIXME gray hack
1849  for(y=0; y<h; y++){
1850  for(x=0; x<w; x++){
1851  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];
1852  error += d*d;
1853  }
1854  }
1855  s->avctx->error[plane_index] += error;
1856  s->encoding_error[plane_index] = error;
1857  }
1858 
1859  }
1860  emms_c();
1861 
1863 
1864  ff_snow_release_buffer(avctx);
1865 
1867  s->current_picture->pict_type = pic->pict_type;
1868  s->current_picture->quality = pic->quality;
1869  s->m.frame_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1870  s->m.p_tex_bits = s->m.frame_bits - s->m.misc_bits - s->m.mv_bits;
1873  s->m.current_picture.f->quality = pic->quality;
1874  s->m.total_bits += 8*(s->c.bytestream - s->c.bytestream_start);
1875  if(s->pass1_rc)
1876  if (ff_rate_estimate_qscale(&s->m, 0) < 0)
1877  return -1;
1878  if(avctx->flags&AV_CODEC_FLAG_PASS1)
1879  ff_write_pass1_stats(&s->m);
1880  s->m.last_pict_type = s->m.pict_type;
1881 #if FF_API_STAT_BITS
1883  avctx->frame_bits = s->m.frame_bits;
1884  avctx->mv_bits = s->m.mv_bits;
1885  avctx->misc_bits = s->m.misc_bits;
1886  avctx->p_tex_bits = s->m.p_tex_bits;
1888 #endif
1889 
1890  emms_c();
1891 
1893  s->encoding_error,
1894  (s->avctx->flags&AV_CODEC_FLAG_PSNR) ? 4 : 0,
1896 
1897 #if FF_API_ERROR_FRAME
1899  memcpy(s->current_picture->error, s->encoding_error, sizeof(s->encoding_error));
1901 #endif
1902 
1903  pkt->size = ff_rac_terminate(c, 0);
1904  if (s->current_picture->key_frame)
1905  pkt->flags |= AV_PKT_FLAG_KEY;
1906  *got_packet = 1;
1907 
1908  return 0;
1909 }
1910 
1912 {
1913  SnowContext *s = avctx->priv_data;
1914 
1915  ff_snow_common_end(s);
1918  av_freep(&avctx->stats_out);
1919 
1920  return 0;
1921 }
1922 
1923 #define OFFSET(x) offsetof(SnowContext, x)
1924 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1925 static const AVOption options[] = {
1926  {"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" },
1927  { "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, VE, "motion_est" },
1928  { "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, VE, "motion_est" },
1929  { "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, VE, "motion_est" },
1930  { "iter", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ITER }, 0, 0, VE, "motion_est" },
1931  { "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 },
1932  { "no_bitstream", "Skip final bitstream writeout.", OFFSET(no_bitstream), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1933  { "intra_penalty", "Penalty for intra blocks in block decission", OFFSET(intra_penalty), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1934  { "iterative_dia_size", "Dia size for the iterative ME", OFFSET(iterative_dia_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1935  { "sc_threshold", "Scene change threshold", OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, VE },
1936  { "pred", "Spatial decomposition type", OFFSET(pred), AV_OPT_TYPE_INT, { .i64 = 0 }, DWT_97, DWT_53, VE, "pred" },
1937  { "dwt97", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "pred" },
1938  { "dwt53", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "pred" },
1939  { NULL },
1940 };
1941 
1942 static const AVClass snowenc_class = {
1943  .class_name = "snow encoder",
1944  .item_name = av_default_item_name,
1945  .option = options,
1946  .version = LIBAVUTIL_VERSION_INT,
1947 };
1948 
1950  .name = "snow",
1951  .long_name = NULL_IF_CONFIG_SMALL("Snow"),
1952  .type = AVMEDIA_TYPE_VIDEO,
1953  .id = AV_CODEC_ID_SNOW,
1954  .priv_data_size = sizeof(SnowContext),
1955  .init = encode_init,
1956  .encode2 = encode_frame,
1957  .close = encode_end,
1958  .pix_fmts = (const enum AVPixelFormat[]){
1962  },
1963  .priv_class = &snowenc_class,
1964  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
1966 };
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:1942
int version
Definition: snow.h:135
static av_cold int encode_end(AVCodecContext *avctx)
Definition: snowenc.c:1911
MpegEncContext m
Definition: snow.h:183
int frame_bits
bits used for the current frame
Definition: mpegvideo.h:338
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:341
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:224
int picture_number
Definition: mpegvideo.h:127
#define P
#define P_TOPRIGHT
Definition: snowenc.c:223
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 size
int chroma_v_shift
Definition: snow.h:153
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
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:720
int pass1_rc
Definition: snow.h:159
uint64_t error[AV_NUM_DATA_POINTERS]
error
Definition: avcodec.h:2748
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
RateControlEntry * entry
Definition: ratecontrol.h:65
int * run_buffer
Definition: snow.h:150
int64_t bit_rate
the average bitrate
Definition: avcodec.h:1615
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
#define P_LEFT
Definition: snowenc.c:221
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
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
Range coder.
uint8_t * bytestream_end
Definition: rangecoder.h:44
int size
Definition: avcodec.h:1478
const char * b
Definition: vf_curves.c:116
int mb_lmin
minimum MB Lagrange multiplier
Definition: avcodec.h:2112
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
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:1775
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:1982
mpegvideo header.
int8_t last_hcoeff[HTAPS_MAX/2]
Definition: snow.h:110
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:47
static void update_last_header_values(SnowContext *s)
Definition: snowenc.c:1463
int keyframe
Definition: snow.h:133
uint8_t run
Definition: svq3.c:206
static AVPacket pkt
#define EDGE_TOP
int mb_num
number of MBs of a picture
Definition: mpegvideo.h:133
#define src
Definition: vp8dsp.c:254
#define FF_LAMBDA_SHIFT
Definition: avutil.h:225
QpelDSPContext qdsp
Definition: mpegvideo.h:235
int stride
Definition: mace.c:144
AVCodec.
Definition: avcodec.h:3481
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:204
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
AVCodec ff_snow_encoder
Definition: snowenc.c:1949
#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:778
#define OFFSET(x)
Definition: snowenc.c:1923
int qlog
log(qscale)/log[2^(1/6)]
Definition: snow.h:88
Definition: snow.h:51
int width
Definition: cfhd.h:49
static int get_penalty_factor(int lambda, int lambda2, int type)
Definition: snowenc.c:196
static int16_t block[64]
Definition: dct.c:115
void(* draw_edges)(uint8_t *buf, int wrap, int width, int height, int w, int h, int sides)
uint8_t level
Definition: snow.h:61
attribute_deprecated int mv_bits
Definition: avcodec.h:2558
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:112
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:2119
int b_height
Definition: snow.h:166
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: snowenc.c:1566
ScratchpadContext sc
Definition: mpegvideo.h:202
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:189
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:104
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)
const uint32_t ff_square_tab[512]
Definition: me_cmp.c:33
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:443
#define emms_c()
Definition: internal.h:55
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:388
int misc_bits
cbp, mb_type
Definition: mpegvideo.h:352
int me_cmp
motion estimation comparison function
Definition: avcodec.h:1951
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:180
#define ENCODER_EXTRA_BITS
Definition: snow.h:75
static void calculate_visual_weight(SnowContext *s, Plane *p)
Definition: snowenc.c:1540
#define height
int16_t my
Motion vector component Y, see mv_scale.
Definition: snow.h:53
uint8_t * data
Definition: avcodec.h:1477
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:1224
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:129
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:2584
#define FF_CMP_SSE
Definition: avcodec.h:1971
#define AV_INPUT_BUFFER_MIN_SIZE
minimum encoding buffer size Used to avoid some checks during header writing.
Definition: avcodec.h:797
attribute_deprecated uint64_t error[AV_NUM_DATA_POINTERS]
Definition: frame.h:430
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:44
#define ROUNDED_DIV(a, b)
Definition: common.h:56
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1509
#define DWT_97
Definition: snow_dwt.h:68
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 i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#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:854
int64_t total_bits
Definition: mpegvideo.h:337
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:1957
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
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:2550
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:223
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
int diag_mc
Definition: snow.h:106
const char * r
Definition: vf_curves.c:114
static void pred_mv(DiracBlock *block, int stride, int x, int y, int ref)
Definition: diracdec.c:1393
#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:1645
static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index)
Definition: snowenc.c:512
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
const char * name
Name of the codec implementation.
Definition: avcodec.h:3488
static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median)
Definition: snowenc.c:1353
int quarter_sample
1->qpel, 0->half pel ME/MC
Definition: mpegvideo.h:401
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:1483
uint8_t color[3]
Color for intra.
Definition: snow.h:55
#define pass
Definition: fft_template.c:619
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:2153
#define FF_CMP_BIT
Definition: avcodec.h:1975
SubBand band[DWT_LEVELS][4]
Definition: cfhd.h:69
const int8_t ff_quant3bA[256]
Definition: snowdata.h:104
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:378
uint8_t * ibuf
Definition: cfhd.h:54
#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:850
#define FFMIN(a, b)
Definition: common.h:96
int display_picture_number
picture number in display order
Definition: frame.h:413
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:946
#define width
#define ME_CACHE_SIZE
Definition: snow.h:172
#define LOSSLESS_QLOG
Definition: snow.h:45
int width
picture width / height.
Definition: avcodec.h:1738
uint8_t w
Definition: llviddspenc.c:38
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:184
#define VE
Definition: snowenc.c:1924
static struct @313 state
uint8_t * scratchbuf
Definition: snow.h:185
#define AV_CODEC_FLAG_PSNR
error[?] variables will be set during encoding.
Definition: avcodec.h:887
static int encode_q_branch(SnowContext *s, int level, int x, int y)
Definition: snowenc.c:228
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:871
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
#define s(width, name)
Definition: cbs_vp9.c:257
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:418
MotionEstContext me
Definition: mpegvideo.h:282
int last_mv_scale
Definition: snow.h:161
int chroma_h_shift
Definition: snow.h:152
#define FF_CMP_SAD
Definition: avcodec.h:1970
static void error(const char *err)
#define av_log2
Definition: intmath.h:83
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:2572
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:409
#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:207
Libavcodec external API header.
static void encode_header(SnowContext *s)
Definition: snowenc.c:1390
attribute_deprecated int scenechange_threshold
Definition: avcodec.h:2079
#define FF_CMP_RD
Definition: avcodec.h:1976
ptrdiff_t linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:134
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:1924
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type)
Definition: me_cmp.c:474
#define abs(x)
Definition: cuda_runtime.h:35
main external API structure.
Definition: avcodec.h:1565
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:100
#define FF_CMP_NSSE
Definition: avcodec.h:1980
#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:1972
struct SubBand * parent
Definition: diracdec.c:99
void * buf
Definition: avisynth_c.h:766
#define FF_CMP_DCT
Definition: avcodec.h:1973
static int get_rac_count(RangeCoder *c)
Definition: rangecoder.h:96
static void encode_q_branch2(SnowContext *s, int level, int x, int y)
Definition: snowenc.c:456
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:72
double value
Definition: eval.c:98
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
cl_device_type type
int pred
Definition: snow.h:192
static int get_block_bits(SnowContext *s, int x, int y, int w)
Definition: snowenc.c:570
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:135
#define FF_CMP_PSNR
Definition: avcodec.h:1974
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:1981
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:238
#define FF_CMP_DCT264
Definition: avcodec.h:1984
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:2564
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:212
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
int spatial_scalability
Definition: snow.h:154
static int qscale2qlog(int qscale)
Definition: snowenc.c:1483
static int pix_sum(uint8_t *pix, int line_size, int w, int h)
Definition: snowenc.c:164
int ff_snow_common_init(AVCodecContext *avctx)
static void encode_qlogs(SnowContext *s)
Definition: snowenc.c:1377
int motion_est
ME algorithm.
Definition: mpegvideo.h:258
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:553
int global_quality
Global quality for codecs which cannot change it per frame.
Definition: avcodec.h:1631
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:862
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:309
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:608
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
Definition: mpegvideo.h:131
int ff_rac_terminate(RangeCoder *c, int version)
Terminates the range coder.
Definition: rangecoder.c:109
struct AVCodecContext * avctx
Definition: mpegvideo.h:98
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1760
static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index)
Definition: snowenc.c:709
int
int mb_cmp
macroblock comparison function (not supported yet)
Definition: avcodec.h:1963
MECmpContext mecc
Definition: mpegvideo.h:231
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
#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:84
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:130
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:214
#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:2815
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:1925
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:875
void * priv_data
Definition: avcodec.h:1592
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:951
static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride)
Definition: snowenc.c:1307
int dia_size
ME diamond size & shape.
Definition: avcodec.h:1993
attribute_deprecated int frame_bits
Definition: avcodec.h:2576
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:85
#define FF_ME_ITER
Definition: snow.h:38
uint8_t * obmc_scratchpad
Definition: mpegpicture.h:38
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:103
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:373
int height
Definition: cfhd.h:51
#define DWT_53
Definition: snow_dwt.h:69
#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:58
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:2256
DWTELEM * buf
Definition: snow.h:89
#define P_TOP
Definition: snowenc.c:222
#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
static int ratecontrol_1pass(SnowContext *s, AVFrame *pict)
Definition: snowenc.c:1488
AVFrame * last_picture[MAX_REF_FRAMES]
Definition: snow.h:127
int height
Definition: cfhd.h:59
int last_qbias
Definition: snow.h:163
static double cr(void *priv, double x, double y)
Definition: vf_geq.c:113
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:180
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:64
This structure stores compressed data.
Definition: avcodec.h:1454
static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median)
Definition: snowenc.c:1329
#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:1246
static int encode_subband(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation)
Definition: snowenc.c:898
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:206
Definition: cfhd.h:57
#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)
Allocate a memory block for an array with av_mallocz().
Definition: mem.c:191
HpelDSPContext hdsp
Definition: mpegvideo.h:229
static void iterative_me(SnowContext *s)
Definition: snowenc.c:997
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:905
static uint8_t tmp[11]
Definition: aes_ctr.c:26