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snowenc.c
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1 /*
2  * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "libavutil/intmath.h"
22 #include "libavutil/libm.h"
23 #include "libavutil/log.h"
24 #include "libavutil/opt.h"
25 #include "avcodec.h"
26 #include "internal.h"
27 #include "snow_dwt.h"
28 #include "snow.h"
29 
30 #include "rangecoder.h"
31 #include "mathops.h"
32 
33 #include "mpegvideo.h"
34 #include "h263.h"
35 
36 #define FF_ME_ITER 50
37 
39 {
40  SnowContext *s = avctx->priv_data;
41  int plane_index, ret;
42  int i;
43 
44 #if FF_API_PRIVATE_OPT
46  if (avctx->prediction_method)
47  s->pred = avctx->prediction_method;
49 #endif
50 
51  if(s->pred == DWT_97
52  && (avctx->flags & AV_CODEC_FLAG_QSCALE)
53  && avctx->global_quality == 0){
54  av_log(avctx, AV_LOG_ERROR, "The 9/7 wavelet is incompatible with lossless mode.\n");
55  return -1;
56  }
57 #if FF_API_MOTION_EST
59  if (avctx->me_method == ME_ITER)
62 #endif
63 
64  s->spatial_decomposition_type= s->pred; //FIXME add decorrelator type r transform_type
65 
66  s->mv_scale = (avctx->flags & AV_CODEC_FLAG_QPEL) ? 2 : 4;
67  s->block_max_depth= (avctx->flags & AV_CODEC_FLAG_4MV ) ? 1 : 0;
68 
69  for(plane_index=0; plane_index<3; plane_index++){
70  s->plane[plane_index].diag_mc= 1;
71  s->plane[plane_index].htaps= 6;
72  s->plane[plane_index].hcoeff[0]= 40;
73  s->plane[plane_index].hcoeff[1]= -10;
74  s->plane[plane_index].hcoeff[2]= 2;
75  s->plane[plane_index].fast_mc= 1;
76  }
77 
78  if ((ret = ff_snow_common_init(avctx)) < 0) {
79  return ret;
80  }
82 
84 
85  s->version=0;
86 
87  s->m.avctx = avctx;
88  s->m.bit_rate= avctx->bit_rate;
89 
90  s->m.me.temp =
91  s->m.me.scratchpad= av_mallocz_array((avctx->width+64), 2*16*2*sizeof(uint8_t));
92  s->m.me.map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
93  s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
94  s->m.sc.obmc_scratchpad= av_mallocz(MB_SIZE*MB_SIZE*12*sizeof(uint32_t));
95  if (!s->m.me.scratchpad || !s->m.me.map || !s->m.me.score_map || !s->m.sc.obmc_scratchpad)
96  return AVERROR(ENOMEM);
97 
98  ff_h263_encode_init(&s->m); //mv_penalty
99 
100  s->max_ref_frames = av_clip(avctx->refs, 1, MAX_REF_FRAMES);
101 
102  if(avctx->flags&AV_CODEC_FLAG_PASS1){
103  if(!avctx->stats_out)
104  avctx->stats_out = av_mallocz(256);
105 
106  if (!avctx->stats_out)
107  return AVERROR(ENOMEM);
108  }
109  if((avctx->flags&AV_CODEC_FLAG_PASS2) || !(avctx->flags&CODEC_FLAG_QSCALE)){
110  if(ff_rate_control_init(&s->m) < 0)
111  return -1;
112  }
114 
115  switch(avctx->pix_fmt){
116  case AV_PIX_FMT_YUV444P:
117 // case AV_PIX_FMT_YUV422P:
118  case AV_PIX_FMT_YUV420P:
119 // case AV_PIX_FMT_YUV411P:
120  case AV_PIX_FMT_YUV410P:
121  s->nb_planes = 3;
122  s->colorspace_type= 0;
123  break;
124  case AV_PIX_FMT_GRAY8:
125  s->nb_planes = 1;
126  s->colorspace_type = 1;
127  break;
128 /* case AV_PIX_FMT_RGB32:
129  s->colorspace= 1;
130  break;*/
131  default:
132  av_log(avctx, AV_LOG_ERROR, "pixel format not supported\n");
133  return -1;
134  }
136 
137  ff_set_cmp(&s->mecc, s->mecc.me_cmp, s->avctx->me_cmp);
139 
141  if (!s->input_picture)
142  return AVERROR(ENOMEM);
143 
144  if ((ret = ff_snow_get_buffer(s, s->input_picture)) < 0)
145  return ret;
146 
147  if(s->motion_est == FF_ME_ITER){
148  int size= s->b_width * s->b_height << 2*s->block_max_depth;
149  for(i=0; i<s->max_ref_frames; i++){
150  s->ref_mvs[i]= av_mallocz_array(size, sizeof(int16_t[2]));
151  s->ref_scores[i]= av_mallocz_array(size, sizeof(uint32_t));
152  if (!s->ref_mvs[i] || !s->ref_scores[i])
153  return AVERROR(ENOMEM);
154  }
155  }
156 
157  return 0;
158 }
159 
160 //near copy & paste from dsputil, FIXME
161 static int pix_sum(uint8_t * pix, int line_size, int w, int h)
162 {
163  int s, i, j;
164 
165  s = 0;
166  for (i = 0; i < h; i++) {
167  for (j = 0; j < w; j++) {
168  s += pix[0];
169  pix ++;
170  }
171  pix += line_size - w;
172  }
173  return s;
174 }
175 
176 //near copy & paste from dsputil, FIXME
177 static int pix_norm1(uint8_t * pix, int line_size, int w)
178 {
179  int s, i, j;
180  uint32_t *sq = ff_square_tab + 256;
181 
182  s = 0;
183  for (i = 0; i < w; i++) {
184  for (j = 0; j < w; j ++) {
185  s += sq[pix[0]];
186  pix ++;
187  }
188  pix += line_size - w;
189  }
190  return s;
191 }
192 
193 static inline int get_penalty_factor(int lambda, int lambda2, int type){
194  switch(type&0xFF){
195  default:
196  case FF_CMP_SAD:
197  return lambda>>FF_LAMBDA_SHIFT;
198  case FF_CMP_DCT:
199  return (3*lambda)>>(FF_LAMBDA_SHIFT+1);
200  case FF_CMP_W53:
201  return (4*lambda)>>(FF_LAMBDA_SHIFT);
202  case FF_CMP_W97:
203  return (2*lambda)>>(FF_LAMBDA_SHIFT);
204  case FF_CMP_SATD:
205  case FF_CMP_DCT264:
206  return (2*lambda)>>FF_LAMBDA_SHIFT;
207  case FF_CMP_RD:
208  case FF_CMP_PSNR:
209  case FF_CMP_SSE:
210  case FF_CMP_NSSE:
211  return lambda2>>FF_LAMBDA_SHIFT;
212  case FF_CMP_BIT:
213  return 1;
214  }
215 }
216 
217 //FIXME copy&paste
218 #define P_LEFT P[1]
219 #define P_TOP P[2]
220 #define P_TOPRIGHT P[3]
221 #define P_MEDIAN P[4]
222 #define P_MV1 P[9]
223 #define FLAG_QPEL 1 //must be 1
224 
225 static int encode_q_branch(SnowContext *s, int level, int x, int y){
226  uint8_t p_buffer[1024];
227  uint8_t i_buffer[1024];
228  uint8_t p_state[sizeof(s->block_state)];
229  uint8_t i_state[sizeof(s->block_state)];
230  RangeCoder pc, ic;
231  uint8_t *pbbak= s->c.bytestream;
232  uint8_t *pbbak_start= s->c.bytestream_start;
233  int score, score2, iscore, i_len, p_len, block_s, sum, base_bits;
234  const int w= s->b_width << s->block_max_depth;
235  const int h= s->b_height << s->block_max_depth;
236  const int rem_depth= s->block_max_depth - level;
237  const int index= (x + y*w) << rem_depth;
238  const int block_w= 1<<(LOG2_MB_SIZE - level);
239  int trx= (x+1)<<rem_depth;
240  int try= (y+1)<<rem_depth;
241  const BlockNode *left = x ? &s->block[index-1] : &null_block;
242  const BlockNode *top = y ? &s->block[index-w] : &null_block;
243  const BlockNode *right = trx<w ? &s->block[index+1] : &null_block;
244  const BlockNode *bottom= try<h ? &s->block[index+w] : &null_block;
245  const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
246  const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
247  int pl = left->color[0];
248  int pcb= left->color[1];
249  int pcr= left->color[2];
250  int pmx, pmy;
251  int mx=0, my=0;
252  int l,cr,cb;
253  const int stride= s->current_picture->linesize[0];
254  const int uvstride= s->current_picture->linesize[1];
255  uint8_t *current_data[3]= { s->input_picture->data[0] + (x + y* stride)*block_w,
256  s->input_picture->data[1] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift),
257  s->input_picture->data[2] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift)};
258  int P[10][2];
259  int16_t last_mv[3][2];
260  int qpel= !!(s->avctx->flags & AV_CODEC_FLAG_QPEL); //unused
261  const int shift= 1+qpel;
262  MotionEstContext *c= &s->m.me;
263  int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
264  int mx_context= av_log2(2*FFABS(left->mx - top->mx));
265  int my_context= av_log2(2*FFABS(left->my - top->my));
266  int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
267  int ref, best_ref, ref_score, ref_mx, ref_my;
268 
269  av_assert0(sizeof(s->block_state) >= 256);
270  if(s->keyframe){
271  set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
272  return 0;
273  }
274 
275 // clip predictors / edge ?
276 
277  P_LEFT[0]= left->mx;
278  P_LEFT[1]= left->my;
279  P_TOP [0]= top->mx;
280  P_TOP [1]= top->my;
281  P_TOPRIGHT[0]= tr->mx;
282  P_TOPRIGHT[1]= tr->my;
283 
284  last_mv[0][0]= s->block[index].mx;
285  last_mv[0][1]= s->block[index].my;
286  last_mv[1][0]= right->mx;
287  last_mv[1][1]= right->my;
288  last_mv[2][0]= bottom->mx;
289  last_mv[2][1]= bottom->my;
290 
291  s->m.mb_stride=2;
292  s->m.mb_x=
293  s->m.mb_y= 0;
294  c->skip= 0;
295 
296  av_assert1(c-> stride == stride);
297  av_assert1(c->uvstride == uvstride);
298 
303 
304  c->xmin = - x*block_w - 16+3;
305  c->ymin = - y*block_w - 16+3;
306  c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
307  c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
308 
309  if(P_LEFT[0] > (c->xmax<<shift)) P_LEFT[0] = (c->xmax<<shift);
310  if(P_LEFT[1] > (c->ymax<<shift)) P_LEFT[1] = (c->ymax<<shift);
311  if(P_TOP[0] > (c->xmax<<shift)) P_TOP[0] = (c->xmax<<shift);
312  if(P_TOP[1] > (c->ymax<<shift)) P_TOP[1] = (c->ymax<<shift);
313  if(P_TOPRIGHT[0] < (c->xmin<<shift)) P_TOPRIGHT[0]= (c->xmin<<shift);
314  if(P_TOPRIGHT[0] > (c->xmax<<shift)) P_TOPRIGHT[0]= (c->xmax<<shift); //due to pmx no clip
315  if(P_TOPRIGHT[1] > (c->ymax<<shift)) P_TOPRIGHT[1]= (c->ymax<<shift);
316 
317  P_MEDIAN[0]= mid_pred(P_LEFT[0], P_TOP[0], P_TOPRIGHT[0]);
318  P_MEDIAN[1]= mid_pred(P_LEFT[1], P_TOP[1], P_TOPRIGHT[1]);
319 
320  if (!y) {
321  c->pred_x= P_LEFT[0];
322  c->pred_y= P_LEFT[1];
323  } else {
324  c->pred_x = P_MEDIAN[0];
325  c->pred_y = P_MEDIAN[1];
326  }
327 
328  score= INT_MAX;
329  best_ref= 0;
330  for(ref=0; ref<s->ref_frames; ref++){
331  init_ref(c, current_data, s->last_picture[ref]->data, NULL, block_w*x, block_w*y, 0);
332 
333  ref_score= ff_epzs_motion_search(&s->m, &ref_mx, &ref_my, P, 0, /*ref_index*/ 0, last_mv,
334  (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w);
335 
336  av_assert2(ref_mx >= c->xmin);
337  av_assert2(ref_mx <= c->xmax);
338  av_assert2(ref_my >= c->ymin);
339  av_assert2(ref_my <= c->ymax);
340 
341  ref_score= c->sub_motion_search(&s->m, &ref_mx, &ref_my, ref_score, 0, 0, level-LOG2_MB_SIZE+4, block_w);
342  ref_score= ff_get_mb_score(&s->m, ref_mx, ref_my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0);
343  ref_score+= 2*av_log2(2*ref)*c->penalty_factor;
344  if(s->ref_mvs[ref]){
345  s->ref_mvs[ref][index][0]= ref_mx;
346  s->ref_mvs[ref][index][1]= ref_my;
347  s->ref_scores[ref][index]= ref_score;
348  }
349  if(score > ref_score){
350  score= ref_score;
351  best_ref= ref;
352  mx= ref_mx;
353  my= ref_my;
354  }
355  }
356  //FIXME if mb_cmp != SSE then intra cannot be compared currently and mb_penalty vs. lambda2
357 
358  // subpel search
359  base_bits= get_rac_count(&s->c) - 8*(s->c.bytestream - s->c.bytestream_start);
360  pc= s->c;
361  pc.bytestream_start=
362  pc.bytestream= p_buffer; //FIXME end/start? and at the other stoo
363  memcpy(p_state, s->block_state, sizeof(s->block_state));
364 
365  if(level!=s->block_max_depth)
366  put_rac(&pc, &p_state[4 + s_context], 1);
367  put_rac(&pc, &p_state[1 + left->type + top->type], 0);
368  if(s->ref_frames > 1)
369  put_symbol(&pc, &p_state[128 + 1024 + 32*ref_context], best_ref, 0);
370  pred_mv(s, &pmx, &pmy, best_ref, left, top, tr);
371  put_symbol(&pc, &p_state[128 + 32*(mx_context + 16*!!best_ref)], mx - pmx, 1);
372  put_symbol(&pc, &p_state[128 + 32*(my_context + 16*!!best_ref)], my - pmy, 1);
373  p_len= pc.bytestream - pc.bytestream_start;
374  score += (s->lambda2*(get_rac_count(&pc)-base_bits))>>FF_LAMBDA_SHIFT;
375 
376  block_s= block_w*block_w;
377  sum = pix_sum(current_data[0], stride, block_w, block_w);
378  l= (sum + block_s/2)/block_s;
379  iscore = pix_norm1(current_data[0], stride, block_w) - 2*l*sum + l*l*block_s;
380 
381  if (s->nb_planes > 2) {
382  block_s= block_w*block_w>>(s->chroma_h_shift + s->chroma_v_shift);
383  sum = pix_sum(current_data[1], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
384  cb= (sum + block_s/2)/block_s;
385  // iscore += pix_norm1(&current_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s;
386  sum = pix_sum(current_data[2], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
387  cr= (sum + block_s/2)/block_s;
388  // iscore += pix_norm1(&current_mb[2][0], uvstride, block_w>>1) - 2*cr*sum + cr*cr*block_s;
389  }else
390  cb = cr = 0;
391 
392  ic= s->c;
393  ic.bytestream_start=
394  ic.bytestream= i_buffer; //FIXME end/start? and at the other stoo
395  memcpy(i_state, s->block_state, sizeof(s->block_state));
396  if(level!=s->block_max_depth)
397  put_rac(&ic, &i_state[4 + s_context], 1);
398  put_rac(&ic, &i_state[1 + left->type + top->type], 1);
399  put_symbol(&ic, &i_state[32], l-pl , 1);
400  if (s->nb_planes > 2) {
401  put_symbol(&ic, &i_state[64], cb-pcb, 1);
402  put_symbol(&ic, &i_state[96], cr-pcr, 1);
403  }
404  i_len= ic.bytestream - ic.bytestream_start;
405  iscore += (s->lambda2*(get_rac_count(&ic)-base_bits))>>FF_LAMBDA_SHIFT;
406 
407  av_assert1(iscore < 255*255*256 + s->lambda2*10);
408  av_assert1(iscore >= 0);
409  av_assert1(l>=0 && l<=255);
410  av_assert1(pl>=0 && pl<=255);
411 
412  if(level==0){
413  int varc= iscore >> 8;
414  int vard= score >> 8;
415  if (vard <= 64 || vard < varc)
416  c->scene_change_score+= ff_sqrt(vard) - ff_sqrt(varc);
417  else
418  c->scene_change_score+= s->m.qscale;
419  }
420 
421  if(level!=s->block_max_depth){
422  put_rac(&s->c, &s->block_state[4 + s_context], 0);
423  score2 = encode_q_branch(s, level+1, 2*x+0, 2*y+0);
424  score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+0);
425  score2+= encode_q_branch(s, level+1, 2*x+0, 2*y+1);
426  score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+1);
427  score2+= s->lambda2>>FF_LAMBDA_SHIFT; //FIXME exact split overhead
428 
429  if(score2 < score && score2 < iscore)
430  return score2;
431  }
432 
433  if(iscore < score){
434  pred_mv(s, &pmx, &pmy, 0, left, top, tr);
435  memcpy(pbbak, i_buffer, i_len);
436  s->c= ic;
437  s->c.bytestream_start= pbbak_start;
438  s->c.bytestream= pbbak + i_len;
439  set_blocks(s, level, x, y, l, cb, cr, pmx, pmy, 0, BLOCK_INTRA);
440  memcpy(s->block_state, i_state, sizeof(s->block_state));
441  return iscore;
442  }else{
443  memcpy(pbbak, p_buffer, p_len);
444  s->c= pc;
445  s->c.bytestream_start= pbbak_start;
446  s->c.bytestream= pbbak + p_len;
447  set_blocks(s, level, x, y, pl, pcb, pcr, mx, my, best_ref, 0);
448  memcpy(s->block_state, p_state, sizeof(s->block_state));
449  return score;
450  }
451 }
452 
453 static void encode_q_branch2(SnowContext *s, int level, int x, int y){
454  const int w= s->b_width << s->block_max_depth;
455  const int rem_depth= s->block_max_depth - level;
456  const int index= (x + y*w) << rem_depth;
457  int trx= (x+1)<<rem_depth;
458  BlockNode *b= &s->block[index];
459  const BlockNode *left = x ? &s->block[index-1] : &null_block;
460  const BlockNode *top = y ? &s->block[index-w] : &null_block;
461  const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
462  const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
463  int pl = left->color[0];
464  int pcb= left->color[1];
465  int pcr= left->color[2];
466  int pmx, pmy;
467  int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
468  int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 16*!!b->ref;
469  int my_context= av_log2(2*FFABS(left->my - top->my)) + 16*!!b->ref;
470  int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
471 
472  if(s->keyframe){
473  set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
474  return;
475  }
476 
477  if(level!=s->block_max_depth){
478  if(same_block(b,b+1) && same_block(b,b+w) && same_block(b,b+w+1)){
479  put_rac(&s->c, &s->block_state[4 + s_context], 1);
480  }else{
481  put_rac(&s->c, &s->block_state[4 + s_context], 0);
482  encode_q_branch2(s, level+1, 2*x+0, 2*y+0);
483  encode_q_branch2(s, level+1, 2*x+1, 2*y+0);
484  encode_q_branch2(s, level+1, 2*x+0, 2*y+1);
485  encode_q_branch2(s, level+1, 2*x+1, 2*y+1);
486  return;
487  }
488  }
489  if(b->type & BLOCK_INTRA){
490  pred_mv(s, &pmx, &pmy, 0, left, top, tr);
491  put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 1);
492  put_symbol(&s->c, &s->block_state[32], b->color[0]-pl , 1);
493  if (s->nb_planes > 2) {
494  put_symbol(&s->c, &s->block_state[64], b->color[1]-pcb, 1);
495  put_symbol(&s->c, &s->block_state[96], b->color[2]-pcr, 1);
496  }
497  set_blocks(s, level, x, y, b->color[0], b->color[1], b->color[2], pmx, pmy, 0, BLOCK_INTRA);
498  }else{
499  pred_mv(s, &pmx, &pmy, b->ref, left, top, tr);
500  put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 0);
501  if(s->ref_frames > 1)
502  put_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], b->ref, 0);
503  put_symbol(&s->c, &s->block_state[128 + 32*mx_context], b->mx - pmx, 1);
504  put_symbol(&s->c, &s->block_state[128 + 32*my_context], b->my - pmy, 1);
505  set_blocks(s, level, x, y, pl, pcb, pcr, b->mx, b->my, b->ref, 0);
506  }
507 }
508 
509 static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){
510  int i, x2, y2;
511  Plane *p= &s->plane[plane_index];
512  const int block_size = MB_SIZE >> s->block_max_depth;
513  const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
514  const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
515  const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
516  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
517  const int ref_stride= s->current_picture->linesize[plane_index];
518  uint8_t *src= s-> input_picture->data[plane_index];
519  IDWTELEM *dst= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4; //FIXME change to unsigned
520  const int b_stride = s->b_width << s->block_max_depth;
521  const int w= p->width;
522  const int h= p->height;
523  int index= mb_x + mb_y*b_stride;
524  BlockNode *b= &s->block[index];
525  BlockNode backup= *b;
526  int ab=0;
527  int aa=0;
528 
529  av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc stuff above
530 
531  b->type|= BLOCK_INTRA;
532  b->color[plane_index]= 0;
533  memset(dst, 0, obmc_stride*obmc_stride*sizeof(IDWTELEM));
534 
535  for(i=0; i<4; i++){
536  int mb_x2= mb_x + (i &1) - 1;
537  int mb_y2= mb_y + (i>>1) - 1;
538  int x= block_w*mb_x2 + block_w/2;
539  int y= block_h*mb_y2 + block_h/2;
540 
541  add_yblock(s, 0, NULL, dst + (i&1)*block_w + (i>>1)*obmc_stride*block_h, NULL, obmc,
542  x, y, block_w, block_h, w, h, obmc_stride, ref_stride, obmc_stride, mb_x2, mb_y2, 0, 0, plane_index);
543 
544  for(y2= FFMAX(y, 0); y2<FFMIN(h, y+block_h); y2++){
545  for(x2= FFMAX(x, 0); x2<FFMIN(w, x+block_w); x2++){
546  int index= x2-(block_w*mb_x - block_w/2) + (y2-(block_h*mb_y - block_h/2))*obmc_stride;
547  int obmc_v= obmc[index];
548  int d;
549  if(y<0) obmc_v += obmc[index + block_h*obmc_stride];
550  if(x<0) obmc_v += obmc[index + block_w];
551  if(y+block_h>h) obmc_v += obmc[index - block_h*obmc_stride];
552  if(x+block_w>w) obmc_v += obmc[index - block_w];
553  //FIXME precalculate this or simplify it somehow else
554 
555  d = -dst[index] + (1<<(FRAC_BITS-1));
556  dst[index] = d;
557  ab += (src[x2 + y2*ref_stride] - (d>>FRAC_BITS)) * obmc_v;
558  aa += obmc_v * obmc_v; //FIXME precalculate this
559  }
560  }
561  }
562  *b= backup;
563 
564  return av_clip_uint8( ROUNDED_DIV(ab<<LOG2_OBMC_MAX, aa) ); //FIXME we should not need clipping
565 }
566 
567 static inline int get_block_bits(SnowContext *s, int x, int y, int w){
568  const int b_stride = s->b_width << s->block_max_depth;
569  const int b_height = s->b_height<< s->block_max_depth;
570  int index= x + y*b_stride;
571  const BlockNode *b = &s->block[index];
572  const BlockNode *left = x ? &s->block[index-1] : &null_block;
573  const BlockNode *top = y ? &s->block[index-b_stride] : &null_block;
574  const BlockNode *tl = y && x ? &s->block[index-b_stride-1] : left;
575  const BlockNode *tr = y && x+w<b_stride ? &s->block[index-b_stride+w] : tl;
576  int dmx, dmy;
577 // int mx_context= av_log2(2*FFABS(left->mx - top->mx));
578 // int my_context= av_log2(2*FFABS(left->my - top->my));
579 
580  if(x<0 || x>=b_stride || y>=b_height)
581  return 0;
582 /*
583 1 0 0
584 01X 1-2 1
585 001XX 3-6 2-3
586 0001XXX 7-14 4-7
587 00001XXXX 15-30 8-15
588 */
589 //FIXME try accurate rate
590 //FIXME intra and inter predictors if surrounding blocks are not the same type
591  if(b->type & BLOCK_INTRA){
592  return 3+2*( av_log2(2*FFABS(left->color[0] - b->color[0]))
593  + av_log2(2*FFABS(left->color[1] - b->color[1]))
594  + av_log2(2*FFABS(left->color[2] - b->color[2])));
595  }else{
596  pred_mv(s, &dmx, &dmy, b->ref, left, top, tr);
597  dmx-= b->mx;
598  dmy-= b->my;
599  return 2*(1 + av_log2(2*FFABS(dmx)) //FIXME kill the 2* can be merged in lambda
600  + av_log2(2*FFABS(dmy))
601  + av_log2(2*b->ref));
602  }
603 }
604 
605 static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, uint8_t (*obmc_edged)[MB_SIZE * 2]){
606  Plane *p= &s->plane[plane_index];
607  const int block_size = MB_SIZE >> s->block_max_depth;
608  const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
609  const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
610  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
611  const int ref_stride= s->current_picture->linesize[plane_index];
612  uint8_t *dst= s->current_picture->data[plane_index];
613  uint8_t *src= s-> input_picture->data[plane_index];
614  IDWTELEM *pred= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4;
615  uint8_t *cur = s->scratchbuf;
617  const int b_stride = s->b_width << s->block_max_depth;
618  const int b_height = s->b_height<< s->block_max_depth;
619  const int w= p->width;
620  const int h= p->height;
621  int distortion;
622  int rate= 0;
623  const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
624  int sx= block_w*mb_x - block_w/2;
625  int sy= block_h*mb_y - block_h/2;
626  int x0= FFMAX(0,-sx);
627  int y0= FFMAX(0,-sy);
628  int x1= FFMIN(block_w*2, w-sx);
629  int y1= FFMIN(block_h*2, h-sy);
630  int i,x,y;
631 
632  av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below chckinhg only block_w
633 
634  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);
635 
636  for(y=y0; y<y1; y++){
637  const uint8_t *obmc1= obmc_edged[y];
638  const IDWTELEM *pred1 = pred + y*obmc_stride;
639  uint8_t *cur1 = cur + y*ref_stride;
640  uint8_t *dst1 = dst + sx + (sy+y)*ref_stride;
641  for(x=x0; x<x1; x++){
642 #if FRAC_BITS >= LOG2_OBMC_MAX
643  int v = (cur1[x] * obmc1[x]) << (FRAC_BITS - LOG2_OBMC_MAX);
644 #else
645  int v = (cur1[x] * obmc1[x] + (1<<(LOG2_OBMC_MAX - FRAC_BITS-1))) >> (LOG2_OBMC_MAX - FRAC_BITS);
646 #endif
647  v = (v + pred1[x]) >> FRAC_BITS;
648  if(v&(~255)) v= ~(v>>31);
649  dst1[x] = v;
650  }
651  }
652 
653  /* copy the regions where obmc[] = (uint8_t)256 */
654  if(LOG2_OBMC_MAX == 8
655  && (mb_x == 0 || mb_x == b_stride-1)
656  && (mb_y == 0 || mb_y == b_height-1)){
657  if(mb_x == 0)
658  x1 = block_w;
659  else
660  x0 = block_w;
661  if(mb_y == 0)
662  y1 = block_h;
663  else
664  y0 = block_h;
665  for(y=y0; y<y1; y++)
666  memcpy(dst + sx+x0 + (sy+y)*ref_stride, cur + x0 + y*ref_stride, x1-x0);
667  }
668 
669  if(block_w==16){
670  /* FIXME rearrange dsputil to fit 32x32 cmp functions */
671  /* FIXME check alignment of the cmp wavelet vs the encoding wavelet */
672  /* FIXME cmps overlap but do not cover the wavelet's whole support.
673  * So improving the score of one block is not strictly guaranteed
674  * to improve the score of the whole frame, thus iterative motion
675  * estimation does not always converge. */
676  if(s->avctx->me_cmp == FF_CMP_W97)
677  distortion = ff_w97_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
678  else if(s->avctx->me_cmp == FF_CMP_W53)
679  distortion = ff_w53_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
680  else{
681  distortion = 0;
682  for(i=0; i<4; i++){
683  int off = sx+16*(i&1) + (sy+16*(i>>1))*ref_stride;
684  distortion += s->mecc.me_cmp[0](&s->m, src + off, dst + off, ref_stride, 16);
685  }
686  }
687  }else{
688  av_assert2(block_w==8);
689  distortion = s->mecc.me_cmp[0](&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, block_w*2);
690  }
691 
692  if(plane_index==0){
693  for(i=0; i<4; i++){
694 /* ..RRr
695  * .RXx.
696  * rxx..
697  */
698  rate += get_block_bits(s, mb_x + (i&1) - (i>>1), mb_y + (i>>1), 1);
699  }
700  if(mb_x == b_stride-2)
701  rate += get_block_bits(s, mb_x + 1, mb_y + 1, 1);
702  }
703  return distortion + rate*penalty_factor;
704 }
705 
706 static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){
707  int i, y2;
708  Plane *p= &s->plane[plane_index];
709  const int block_size = MB_SIZE >> s->block_max_depth;
710  const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
711  const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
712  const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
713  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
714  const int ref_stride= s->current_picture->linesize[plane_index];
715  uint8_t *dst= s->current_picture->data[plane_index];
716  uint8_t *src= s-> input_picture->data[plane_index];
717  //FIXME zero_dst is const but add_yblock changes dst if add is 0 (this is never the case for dst=zero_dst
718  // const has only been removed from zero_dst to suppress a warning
719  static IDWTELEM zero_dst[4096]; //FIXME
720  const int b_stride = s->b_width << s->block_max_depth;
721  const int w= p->width;
722  const int h= p->height;
723  int distortion= 0;
724  int rate= 0;
725  const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
726 
727  av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below
728 
729  for(i=0; i<9; i++){
730  int mb_x2= mb_x + (i%3) - 1;
731  int mb_y2= mb_y + (i/3) - 1;
732  int x= block_w*mb_x2 + block_w/2;
733  int y= block_h*mb_y2 + block_h/2;
734 
735  add_yblock(s, 0, NULL, zero_dst, dst, obmc,
736  x, y, block_w, block_h, w, h, /*dst_stride*/0, ref_stride, obmc_stride, mb_x2, mb_y2, 1, 1, plane_index);
737 
738  //FIXME find a cleaner/simpler way to skip the outside stuff
739  for(y2= y; y2<0; y2++)
740  memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
741  for(y2= h; y2<y+block_h; y2++)
742  memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
743  if(x<0){
744  for(y2= y; y2<y+block_h; y2++)
745  memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, -x);
746  }
747  if(x+block_w > w){
748  for(y2= y; y2<y+block_h; y2++)
749  memcpy(dst + w + y2*ref_stride, src + w + y2*ref_stride, x+block_w - w);
750  }
751 
752  av_assert1(block_w== 8 || block_w==16);
753  distortion += s->mecc.me_cmp[block_w==8](&s->m, src + x + y*ref_stride, dst + x + y*ref_stride, ref_stride, block_h);
754  }
755 
756  if(plane_index==0){
757  BlockNode *b= &s->block[mb_x+mb_y*b_stride];
758  int merged= same_block(b,b+1) && same_block(b,b+b_stride) && same_block(b,b+b_stride+1);
759 
760 /* ..RRRr
761  * .RXXx.
762  * .RXXx.
763  * rxxx.
764  */
765  if(merged)
766  rate = get_block_bits(s, mb_x, mb_y, 2);
767  for(i=merged?4:0; i<9; i++){
768  static const int dxy[9][2] = {{0,0},{1,0},{0,1},{1,1},{2,0},{2,1},{-1,2},{0,2},{1,2}};
769  rate += get_block_bits(s, mb_x + dxy[i][0], mb_y + dxy[i][1], 1);
770  }
771  }
772  return distortion + rate*penalty_factor;
773 }
774 
775 static int encode_subband_c0run(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
776  const int w= b->width;
777  const int h= b->height;
778  int x, y;
779 
780  if(1){
781  int run=0;
782  int *runs = s->run_buffer;
783  int run_index=0;
784  int max_index;
785 
786  for(y=0; y<h; y++){
787  for(x=0; x<w; x++){
788  int v, p=0;
789  int /*ll=0, */l=0, lt=0, t=0, rt=0;
790  v= src[x + y*stride];
791 
792  if(y){
793  t= src[x + (y-1)*stride];
794  if(x){
795  lt= src[x - 1 + (y-1)*stride];
796  }
797  if(x + 1 < w){
798  rt= src[x + 1 + (y-1)*stride];
799  }
800  }
801  if(x){
802  l= src[x - 1 + y*stride];
803  /*if(x > 1){
804  if(orientation==1) ll= src[y + (x-2)*stride];
805  else ll= src[x - 2 + y*stride];
806  }*/
807  }
808  if(parent){
809  int px= x>>1;
810  int py= y>>1;
811  if(px<b->parent->width && py<b->parent->height)
812  p= parent[px + py*2*stride];
813  }
814  if(!(/*ll|*/l|lt|t|rt|p)){
815  if(v){
816  runs[run_index++]= run;
817  run=0;
818  }else{
819  run++;
820  }
821  }
822  }
823  }
824  max_index= run_index;
825  runs[run_index++]= run;
826  run_index=0;
827  run= runs[run_index++];
828 
829  put_symbol2(&s->c, b->state[30], max_index, 0);
830  if(run_index <= max_index)
831  put_symbol2(&s->c, b->state[1], run, 3);
832 
833  for(y=0; y<h; y++){
834  if(s->c.bytestream_end - s->c.bytestream < w*40){
835  av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
836  return -1;
837  }
838  for(x=0; x<w; x++){
839  int v, p=0;
840  int /*ll=0, */l=0, lt=0, t=0, rt=0;
841  v= src[x + y*stride];
842 
843  if(y){
844  t= src[x + (y-1)*stride];
845  if(x){
846  lt= src[x - 1 + (y-1)*stride];
847  }
848  if(x + 1 < w){
849  rt= src[x + 1 + (y-1)*stride];
850  }
851  }
852  if(x){
853  l= src[x - 1 + y*stride];
854  /*if(x > 1){
855  if(orientation==1) ll= src[y + (x-2)*stride];
856  else ll= src[x - 2 + y*stride];
857  }*/
858  }
859  if(parent){
860  int px= x>>1;
861  int py= y>>1;
862  if(px<b->parent->width && py<b->parent->height)
863  p= parent[px + py*2*stride];
864  }
865  if(/*ll|*/l|lt|t|rt|p){
866  int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
867 
868  put_rac(&s->c, &b->state[0][context], !!v);
869  }else{
870  if(!run){
871  run= runs[run_index++];
872 
873  if(run_index <= max_index)
874  put_symbol2(&s->c, b->state[1], run, 3);
875  av_assert2(v);
876  }else{
877  run--;
878  av_assert2(!v);
879  }
880  }
881  if(v){
882  int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
883  int l2= 2*FFABS(l) + (l<0);
884  int t2= 2*FFABS(t) + (t<0);
885 
886  put_symbol2(&s->c, b->state[context + 2], FFABS(v)-1, context-4);
887  put_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l2&0xFF] + 3*ff_quant3bA[t2&0xFF]], v<0);
888  }
889  }
890  }
891  }
892  return 0;
893 }
894 
895 static int encode_subband(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
896 // encode_subband_qtree(s, b, src, parent, stride, orientation);
897 // encode_subband_z0run(s, b, src, parent, stride, orientation);
898  return encode_subband_c0run(s, b, src, parent, stride, orientation);
899 // encode_subband_dzr(s, b, src, parent, stride, orientation);
900 }
901 
902 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){
903  const int b_stride= s->b_width << s->block_max_depth;
904  BlockNode *block= &s->block[mb_x + mb_y * b_stride];
905  BlockNode backup= *block;
906  unsigned value;
907  int rd, index;
908 
909  av_assert2(mb_x>=0 && mb_y>=0);
910  av_assert2(mb_x<b_stride);
911 
912  if(intra){
913  block->color[0] = p[0];
914  block->color[1] = p[1];
915  block->color[2] = p[2];
916  block->type |= BLOCK_INTRA;
917  }else{
918  index= (p[0] + 31*p[1]) & (ME_CACHE_SIZE-1);
919  value= s->me_cache_generation + (p[0]>>10) + (p[1]<<6) + (block->ref<<12);
920  if(s->me_cache[index] == value)
921  return 0;
922  s->me_cache[index]= value;
923 
924  block->mx= p[0];
925  block->my= p[1];
926  block->type &= ~BLOCK_INTRA;
927  }
928 
929  rd= get_block_rd(s, mb_x, mb_y, 0, obmc_edged) + s->intra_penalty * !!intra;
930 
931 //FIXME chroma
932  if(rd < *best_rd){
933  *best_rd= rd;
934  return 1;
935  }else{
936  *block= backup;
937  return 0;
938  }
939 }
940 
941 /* special case for int[2] args we discard afterwards,
942  * fixes compilation problem with gcc 2.95 */
943 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){
944  int p[2] = {p0, p1};
945  return check_block(s, mb_x, mb_y, p, 0, obmc_edged, best_rd);
946 }
947 
948 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){
949  const int b_stride= s->b_width << s->block_max_depth;
950  BlockNode *block= &s->block[mb_x + mb_y * b_stride];
951  BlockNode backup[4];
952  unsigned value;
953  int rd, index;
954 
955  /* We don't initialize backup[] during variable declaration, because
956  * that fails to compile on MSVC: "cannot convert from 'BlockNode' to
957  * 'int16_t'". */
958  backup[0] = block[0];
959  backup[1] = block[1];
960  backup[2] = block[b_stride];
961  backup[3] = block[b_stride + 1];
962 
963  av_assert2(mb_x>=0 && mb_y>=0);
964  av_assert2(mb_x<b_stride);
965  av_assert2(((mb_x|mb_y)&1) == 0);
966 
967  index= (p0 + 31*p1) & (ME_CACHE_SIZE-1);
968  value= s->me_cache_generation + (p0>>10) + (p1<<6) + (block->ref<<12);
969  if(s->me_cache[index] == value)
970  return 0;
971  s->me_cache[index]= value;
972 
973  block->mx= p0;
974  block->my= p1;
975  block->ref= ref;
976  block->type &= ~BLOCK_INTRA;
977  block[1]= block[b_stride]= block[b_stride+1]= *block;
978 
979  rd= get_4block_rd(s, mb_x, mb_y, 0);
980 
981 //FIXME chroma
982  if(rd < *best_rd){
983  *best_rd= rd;
984  return 1;
985  }else{
986  block[0]= backup[0];
987  block[1]= backup[1];
988  block[b_stride]= backup[2];
989  block[b_stride+1]= backup[3];
990  return 0;
991  }
992 }
993 
994 static void iterative_me(SnowContext *s){
995  int pass, mb_x, mb_y;
996  const int b_width = s->b_width << s->block_max_depth;
997  const int b_height= s->b_height << s->block_max_depth;
998  const int b_stride= b_width;
999  int color[3];
1000 
1001  {
1002  RangeCoder r = s->c;
1003  uint8_t state[sizeof(s->block_state)];
1004  memcpy(state, s->block_state, sizeof(s->block_state));
1005  for(mb_y= 0; mb_y<s->b_height; mb_y++)
1006  for(mb_x= 0; mb_x<s->b_width; mb_x++)
1007  encode_q_branch(s, 0, mb_x, mb_y);
1008  s->c = r;
1009  memcpy(s->block_state, state, sizeof(s->block_state));
1010  }
1011 
1012  for(pass=0; pass<25; pass++){
1013  int change= 0;
1014 
1015  for(mb_y= 0; mb_y<b_height; mb_y++){
1016  for(mb_x= 0; mb_x<b_width; mb_x++){
1017  int dia_change, i, j, ref;
1018  int best_rd= INT_MAX, ref_rd;
1019  BlockNode backup, ref_b;
1020  const int index= mb_x + mb_y * b_stride;
1021  BlockNode *block= &s->block[index];
1022  BlockNode *tb = mb_y ? &s->block[index-b_stride ] : NULL;
1023  BlockNode *lb = mb_x ? &s->block[index -1] : NULL;
1024  BlockNode *rb = mb_x+1<b_width ? &s->block[index +1] : NULL;
1025  BlockNode *bb = mb_y+1<b_height ? &s->block[index+b_stride ] : NULL;
1026  BlockNode *tlb= mb_x && mb_y ? &s->block[index-b_stride-1] : NULL;
1027  BlockNode *trb= mb_x+1<b_width && mb_y ? &s->block[index-b_stride+1] : NULL;
1028  BlockNode *blb= mb_x && mb_y+1<b_height ? &s->block[index+b_stride-1] : NULL;
1029  BlockNode *brb= mb_x+1<b_width && mb_y+1<b_height ? &s->block[index+b_stride+1] : NULL;
1030  const int b_w= (MB_SIZE >> s->block_max_depth);
1031  uint8_t obmc_edged[MB_SIZE * 2][MB_SIZE * 2];
1032 
1033  if(pass && (block->type & BLOCK_OPT))
1034  continue;
1035  block->type |= BLOCK_OPT;
1036 
1037  backup= *block;
1038 
1039  if(!s->me_cache_generation)
1040  memset(s->me_cache, 0, sizeof(s->me_cache));
1041  s->me_cache_generation += 1<<22;
1042 
1043  //FIXME precalculate
1044  {
1045  int x, y;
1046  for (y = 0; y < b_w * 2; y++)
1047  memcpy(obmc_edged[y], ff_obmc_tab[s->block_max_depth] + y * b_w * 2, b_w * 2);
1048  if(mb_x==0)
1049  for(y=0; y<b_w*2; y++)
1050  memset(obmc_edged[y], obmc_edged[y][0] + obmc_edged[y][b_w-1], b_w);
1051  if(mb_x==b_stride-1)
1052  for(y=0; y<b_w*2; y++)
1053  memset(obmc_edged[y]+b_w, obmc_edged[y][b_w] + obmc_edged[y][b_w*2-1], b_w);
1054  if(mb_y==0){
1055  for(x=0; x<b_w*2; x++)
1056  obmc_edged[0][x] += obmc_edged[b_w-1][x];
1057  for(y=1; y<b_w; y++)
1058  memcpy(obmc_edged[y], obmc_edged[0], b_w*2);
1059  }
1060  if(mb_y==b_height-1){
1061  for(x=0; x<b_w*2; x++)
1062  obmc_edged[b_w*2-1][x] += obmc_edged[b_w][x];
1063  for(y=b_w; y<b_w*2-1; y++)
1064  memcpy(obmc_edged[y], obmc_edged[b_w*2-1], b_w*2);
1065  }
1066  }
1067 
1068  //skip stuff outside the picture
1069  if(mb_x==0 || mb_y==0 || mb_x==b_width-1 || mb_y==b_height-1){
1070  uint8_t *src= s-> input_picture->data[0];
1071  uint8_t *dst= s->current_picture->data[0];
1072  const int stride= s->current_picture->linesize[0];
1073  const int block_w= MB_SIZE >> s->block_max_depth;
1074  const int block_h= MB_SIZE >> s->block_max_depth;
1075  const int sx= block_w*mb_x - block_w/2;
1076  const int sy= block_h*mb_y - block_h/2;
1077  const int w= s->plane[0].width;
1078  const int h= s->plane[0].height;
1079  int y;
1080 
1081  for(y=sy; y<0; y++)
1082  memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1083  for(y=h; y<sy+block_h*2; y++)
1084  memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1085  if(sx<0){
1086  for(y=sy; y<sy+block_h*2; y++)
1087  memcpy(dst + sx + y*stride, src + sx + y*stride, -sx);
1088  }
1089  if(sx+block_w*2 > w){
1090  for(y=sy; y<sy+block_h*2; y++)
1091  memcpy(dst + w + y*stride, src + w + y*stride, sx+block_w*2 - w);
1092  }
1093  }
1094 
1095  // intra(black) = neighbors' contribution to the current block
1096  for(i=0; i < s->nb_planes; i++)
1097  color[i]= get_dc(s, mb_x, mb_y, i);
1098 
1099  // get previous score (cannot be cached due to OBMC)
1100  if(pass > 0 && (block->type&BLOCK_INTRA)){
1101  int color0[3]= {block->color[0], block->color[1], block->color[2]};
1102  check_block(s, mb_x, mb_y, color0, 1, obmc_edged, &best_rd);
1103  }else
1104  check_block_inter(s, mb_x, mb_y, block->mx, block->my, obmc_edged, &best_rd);
1105 
1106  ref_b= *block;
1107  ref_rd= best_rd;
1108  for(ref=0; ref < s->ref_frames; ref++){
1109  int16_t (*mvr)[2]= &s->ref_mvs[ref][index];
1110  if(s->ref_scores[ref][index] > s->ref_scores[ref_b.ref][index]*3/2) //FIXME tune threshold
1111  continue;
1112  block->ref= ref;
1113  best_rd= INT_MAX;
1114 
1115  check_block_inter(s, mb_x, mb_y, mvr[0][0], mvr[0][1], obmc_edged, &best_rd);
1116  check_block_inter(s, mb_x, mb_y, 0, 0, obmc_edged, &best_rd);
1117  if(tb)
1118  check_block_inter(s, mb_x, mb_y, mvr[-b_stride][0], mvr[-b_stride][1], obmc_edged, &best_rd);
1119  if(lb)
1120  check_block_inter(s, mb_x, mb_y, mvr[-1][0], mvr[-1][1], obmc_edged, &best_rd);
1121  if(rb)
1122  check_block_inter(s, mb_x, mb_y, mvr[1][0], mvr[1][1], obmc_edged, &best_rd);
1123  if(bb)
1124  check_block_inter(s, mb_x, mb_y, mvr[b_stride][0], mvr[b_stride][1], obmc_edged, &best_rd);
1125 
1126  /* fullpel ME */
1127  //FIXME avoid subpel interpolation / round to nearest integer
1128  do{
1129  int newx = block->mx;
1130  int newy = block->my;
1131  int dia_size = s->iterative_dia_size ? s->iterative_dia_size : FFMAX(s->avctx->dia_size, 1);
1132  dia_change=0;
1133  for(i=0; i < dia_size; i++){
1134  for(j=0; j<i; j++){
1135  dia_change |= check_block_inter(s, mb_x, mb_y, newx+4*(i-j), newy+(4*j), obmc_edged, &best_rd);
1136  dia_change |= check_block_inter(s, mb_x, mb_y, newx-4*(i-j), newy-(4*j), obmc_edged, &best_rd);
1137  dia_change |= check_block_inter(s, mb_x, mb_y, newx-(4*j), newy+4*(i-j), obmc_edged, &best_rd);
1138  dia_change |= check_block_inter(s, mb_x, mb_y, newx+(4*j), newy-4*(i-j), obmc_edged, &best_rd);
1139  }
1140  }
1141  }while(dia_change);
1142  /* subpel ME */
1143  do{
1144  static const int square[8][2]= {{+1, 0},{-1, 0},{ 0,+1},{ 0,-1},{+1,+1},{-1,-1},{+1,-1},{-1,+1},};
1145  dia_change=0;
1146  for(i=0; i<8; i++)
1147  dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+square[i][0], block->my+square[i][1], obmc_edged, &best_rd);
1148  }while(dia_change);
1149  //FIXME or try the standard 2 pass qpel or similar
1150 
1151  mvr[0][0]= block->mx;
1152  mvr[0][1]= block->my;
1153  if(ref_rd > best_rd){
1154  ref_rd= best_rd;
1155  ref_b= *block;
1156  }
1157  }
1158  best_rd= ref_rd;
1159  *block= ref_b;
1160  check_block(s, mb_x, mb_y, color, 1, obmc_edged, &best_rd);
1161  //FIXME RD style color selection
1162  if(!same_block(block, &backup)){
1163  if(tb ) tb ->type &= ~BLOCK_OPT;
1164  if(lb ) lb ->type &= ~BLOCK_OPT;
1165  if(rb ) rb ->type &= ~BLOCK_OPT;
1166  if(bb ) bb ->type &= ~BLOCK_OPT;
1167  if(tlb) tlb->type &= ~BLOCK_OPT;
1168  if(trb) trb->type &= ~BLOCK_OPT;
1169  if(blb) blb->type &= ~BLOCK_OPT;
1170  if(brb) brb->type &= ~BLOCK_OPT;
1171  change ++;
1172  }
1173  }
1174  }
1175  av_log(s->avctx, AV_LOG_DEBUG, "pass:%d changed:%d\n", pass, change);
1176  if(!change)
1177  break;
1178  }
1179 
1180  if(s->block_max_depth == 1){
1181  int change= 0;
1182  for(mb_y= 0; mb_y<b_height; mb_y+=2){
1183  for(mb_x= 0; mb_x<b_width; mb_x+=2){
1184  int i;
1185  int best_rd, init_rd;
1186  const int index= mb_x + mb_y * b_stride;
1187  BlockNode *b[4];
1188 
1189  b[0]= &s->block[index];
1190  b[1]= b[0]+1;
1191  b[2]= b[0]+b_stride;
1192  b[3]= b[2]+1;
1193  if(same_block(b[0], b[1]) &&
1194  same_block(b[0], b[2]) &&
1195  same_block(b[0], b[3]))
1196  continue;
1197 
1198  if(!s->me_cache_generation)
1199  memset(s->me_cache, 0, sizeof(s->me_cache));
1200  s->me_cache_generation += 1<<22;
1201 
1202  init_rd= best_rd= get_4block_rd(s, mb_x, mb_y, 0);
1203 
1204  //FIXME more multiref search?
1205  check_4block_inter(s, mb_x, mb_y,
1206  (b[0]->mx + b[1]->mx + b[2]->mx + b[3]->mx + 2) >> 2,
1207  (b[0]->my + b[1]->my + b[2]->my + b[3]->my + 2) >> 2, 0, &best_rd);
1208 
1209  for(i=0; i<4; i++)
1210  if(!(b[i]->type&BLOCK_INTRA))
1211  check_4block_inter(s, mb_x, mb_y, b[i]->mx, b[i]->my, b[i]->ref, &best_rd);
1212 
1213  if(init_rd != best_rd)
1214  change++;
1215  }
1216  }
1217  av_log(s->avctx, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4);
1218  }
1219 }
1220 
1221 static void encode_blocks(SnowContext *s, int search){
1222  int x, y;
1223  int w= s->b_width;
1224  int h= s->b_height;
1225 
1226  if(s->motion_est == FF_ME_ITER && !s->keyframe && search)
1227  iterative_me(s);
1228 
1229  for(y=0; y<h; y++){
1230  if(s->c.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit
1231  av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
1232  return;
1233  }
1234  for(x=0; x<w; x++){
1235  if(s->motion_est == FF_ME_ITER || !search)
1236  encode_q_branch2(s, 0, x, y);
1237  else
1238  encode_q_branch (s, 0, x, y);
1239  }
1240  }
1241 }
1242 
1243 static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias){
1244  const int w= b->width;
1245  const int h= b->height;
1246  const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1247  const int qmul= ff_qexp[qlog&(QROOT-1)]<<((qlog>>QSHIFT) + ENCODER_EXTRA_BITS);
1248  int x,y, thres1, thres2;
1249 
1250  if(s->qlog == LOSSLESS_QLOG){
1251  for(y=0; y<h; y++)
1252  for(x=0; x<w; x++)
1253  dst[x + y*stride]= src[x + y*stride];
1254  return;
1255  }
1256 
1257  bias= bias ? 0 : (3*qmul)>>3;
1258  thres1= ((qmul - bias)>>QEXPSHIFT) - 1;
1259  thres2= 2*thres1;
1260 
1261  if(!bias){
1262  for(y=0; y<h; y++){
1263  for(x=0; x<w; x++){
1264  int i= src[x + y*stride];
1265 
1266  if((unsigned)(i+thres1) > thres2){
1267  if(i>=0){
1268  i<<= QEXPSHIFT;
1269  i/= qmul; //FIXME optimize
1270  dst[x + y*stride]= i;
1271  }else{
1272  i= -i;
1273  i<<= QEXPSHIFT;
1274  i/= qmul; //FIXME optimize
1275  dst[x + y*stride]= -i;
1276  }
1277  }else
1278  dst[x + y*stride]= 0;
1279  }
1280  }
1281  }else{
1282  for(y=0; y<h; y++){
1283  for(x=0; x<w; x++){
1284  int i= src[x + y*stride];
1285 
1286  if((unsigned)(i+thres1) > thres2){
1287  if(i>=0){
1288  i<<= QEXPSHIFT;
1289  i= (i + bias) / qmul; //FIXME optimize
1290  dst[x + y*stride]= i;
1291  }else{
1292  i= -i;
1293  i<<= QEXPSHIFT;
1294  i= (i + bias) / qmul; //FIXME optimize
1295  dst[x + y*stride]= -i;
1296  }
1297  }else
1298  dst[x + y*stride]= 0;
1299  }
1300  }
1301  }
1302 }
1303 
1304 static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride){
1305  const int w= b->width;
1306  const int h= b->height;
1307  const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1308  const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1309  const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
1310  int x,y;
1311 
1312  if(s->qlog == LOSSLESS_QLOG) return;
1313 
1314  for(y=0; y<h; y++){
1315  for(x=0; x<w; x++){
1316  int i= src[x + y*stride];
1317  if(i<0){
1318  src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias
1319  }else if(i>0){
1320  src[x + y*stride]= (( i*qmul + qadd)>>(QEXPSHIFT));
1321  }
1322  }
1323  }
1324 }
1325 
1326 static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1327  const int w= b->width;
1328  const int h= b->height;
1329  int x,y;
1330 
1331  for(y=h-1; y>=0; y--){
1332  for(x=w-1; x>=0; x--){
1333  int i= x + y*stride;
1334 
1335  if(x){
1336  if(use_median){
1337  if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1338  else src[i] -= src[i - 1];
1339  }else{
1340  if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1341  else src[i] -= src[i - 1];
1342  }
1343  }else{
1344  if(y) src[i] -= src[i - stride];
1345  }
1346  }
1347  }
1348 }
1349 
1350 static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1351  const int w= b->width;
1352  const int h= b->height;
1353  int x,y;
1354 
1355  for(y=0; y<h; y++){
1356  for(x=0; x<w; x++){
1357  int i= x + y*stride;
1358 
1359  if(x){
1360  if(use_median){
1361  if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1362  else src[i] += src[i - 1];
1363  }else{
1364  if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1365  else src[i] += src[i - 1];
1366  }
1367  }else{
1368  if(y) src[i] += src[i - stride];
1369  }
1370  }
1371  }
1372 }
1373 
1374 static void encode_qlogs(SnowContext *s){
1375  int plane_index, level, orientation;
1376 
1377  for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1378  for(level=0; level<s->spatial_decomposition_count; level++){
1379  for(orientation=level ? 1:0; orientation<4; orientation++){
1380  if(orientation==2) continue;
1381  put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1);
1382  }
1383  }
1384  }
1385 }
1386 
1387 static void encode_header(SnowContext *s){
1388  int plane_index, i;
1389  uint8_t kstate[32];
1390 
1391  memset(kstate, MID_STATE, sizeof(kstate));
1392 
1393  put_rac(&s->c, kstate, s->keyframe);
1394  if(s->keyframe || s->always_reset){
1397  s->last_qlog=
1398  s->last_qbias=
1399  s->last_mv_scale=
1400  s->last_block_max_depth= 0;
1401  for(plane_index=0; plane_index<2; plane_index++){
1402  Plane *p= &s->plane[plane_index];
1403  p->last_htaps=0;
1404  p->last_diag_mc=0;
1405  memset(p->last_hcoeff, 0, sizeof(p->last_hcoeff));
1406  }
1407  }
1408  if(s->keyframe){
1409  put_symbol(&s->c, s->header_state, s->version, 0);
1410  put_rac(&s->c, s->header_state, s->always_reset);
1414  put_symbol(&s->c, s->header_state, s->colorspace_type, 0);
1415  if (s->nb_planes > 2) {
1416  put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0);
1417  put_symbol(&s->c, s->header_state, s->chroma_v_shift, 0);
1418  }
1420 // put_rac(&s->c, s->header_state, s->rate_scalability);
1421  put_symbol(&s->c, s->header_state, s->max_ref_frames-1, 0);
1422 
1423  encode_qlogs(s);
1424  }
1425 
1426  if(!s->keyframe){
1427  int update_mc=0;
1428  for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1429  Plane *p= &s->plane[plane_index];
1430  update_mc |= p->last_htaps != p->htaps;
1431  update_mc |= p->last_diag_mc != p->diag_mc;
1432  update_mc |= !!memcmp(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1433  }
1434  put_rac(&s->c, s->header_state, update_mc);
1435  if(update_mc){
1436  for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1437  Plane *p= &s->plane[plane_index];
1438  put_rac(&s->c, s->header_state, p->diag_mc);
1439  put_symbol(&s->c, s->header_state, p->htaps/2-1, 0);
1440  for(i= p->htaps/2; i; i--)
1441  put_symbol(&s->c, s->header_state, FFABS(p->hcoeff[i]), 0);
1442  }
1443  }
1445  put_rac(&s->c, s->header_state, 1);
1447  encode_qlogs(s);
1448  }else
1449  put_rac(&s->c, s->header_state, 0);
1450  }
1451 
1453  put_symbol(&s->c, s->header_state, s->qlog - s->last_qlog , 1);
1454  put_symbol(&s->c, s->header_state, s->mv_scale - s->last_mv_scale, 1);
1455  put_symbol(&s->c, s->header_state, s->qbias - s->last_qbias , 1);
1457 
1458 }
1459 
1461  int plane_index;
1462 
1463  if(!s->keyframe){
1464  for(plane_index=0; plane_index<2; plane_index++){
1465  Plane *p= &s->plane[plane_index];
1466  p->last_diag_mc= p->diag_mc;
1467  p->last_htaps = p->htaps;
1468  memcpy(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1469  }
1470  }
1471 
1473  s->last_qlog = s->qlog;
1474  s->last_qbias = s->qbias;
1475  s->last_mv_scale = s->mv_scale;
1478 }
1479 
1480 static int qscale2qlog(int qscale){
1481  return lrint(QROOT*log2(qscale / (float)FF_QP2LAMBDA))
1482  + 61*QROOT/8; ///< 64 > 60
1483 }
1484 
1486 {
1487  /* Estimate the frame's complexity as a sum of weighted dwt coefficients.
1488  * FIXME we know exact mv bits at this point,
1489  * but ratecontrol isn't set up to include them. */
1490  uint32_t coef_sum= 0;
1491  int level, orientation, delta_qlog;
1492 
1493  for(level=0; level<s->spatial_decomposition_count; level++){
1494  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1495  SubBand *b= &s->plane[0].band[level][orientation];
1496  IDWTELEM *buf= b->ibuf;
1497  const int w= b->width;
1498  const int h= b->height;
1499  const int stride= b->stride;
1500  const int qlog= av_clip(2*QROOT + b->qlog, 0, QROOT*16);
1501  const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1502  const int qdiv= (1<<16)/qmul;
1503  int x, y;
1504  //FIXME this is ugly
1505  for(y=0; y<h; y++)
1506  for(x=0; x<w; x++)
1507  buf[x+y*stride]= b->buf[x+y*stride];
1508  if(orientation==0)
1509  decorrelate(s, b, buf, stride, 1, 0);
1510  for(y=0; y<h; y++)
1511  for(x=0; x<w; x++)
1512  coef_sum+= abs(buf[x+y*stride]) * qdiv >> 16;
1513  }
1514  }
1515 
1516  /* ugly, ratecontrol just takes a sqrt again */
1517  av_assert0(coef_sum < INT_MAX);
1518  coef_sum = (uint64_t)coef_sum * coef_sum >> 16;
1519 
1520  if(pict->pict_type == AV_PICTURE_TYPE_I){
1521  s->m.current_picture.mb_var_sum= coef_sum;
1523  }else{
1524  s->m.current_picture.mc_mb_var_sum= coef_sum;
1526  }
1527 
1528  pict->quality= ff_rate_estimate_qscale(&s->m, 1);
1529  if (pict->quality < 0)
1530  return INT_MIN;
1531  s->lambda= pict->quality * 3/2;
1532  delta_qlog= qscale2qlog(pict->quality) - s->qlog;
1533  s->qlog+= delta_qlog;
1534  return delta_qlog;
1535 }
1536 
1538  int width = p->width;
1539  int height= p->height;
1540  int level, orientation, x, y;
1541 
1542  for(level=0; level<s->spatial_decomposition_count; level++){
1543  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1544  SubBand *b= &p->band[level][orientation];
1545  IDWTELEM *ibuf= b->ibuf;
1546  int64_t error=0;
1547 
1548  memset(s->spatial_idwt_buffer, 0, sizeof(*s->spatial_idwt_buffer)*width*height);
1549  ibuf[b->width/2 + b->height/2*b->stride]= 256*16;
1551  for(y=0; y<height; y++){
1552  for(x=0; x<width; x++){
1553  int64_t d= s->spatial_idwt_buffer[x + y*width]*16;
1554  error += d*d;
1555  }
1556  }
1557 
1558  b->qlog= (int)(QROOT * log2(352256.0/sqrt(error)) + 0.5);
1559  }
1560  }
1561 }
1562 
1564  const AVFrame *pict, int *got_packet)
1565 {
1566  SnowContext *s = avctx->priv_data;
1567  RangeCoder * const c= &s->c;
1568  AVFrame *pic;
1569  const int width= s->avctx->width;
1570  const int height= s->avctx->height;
1571  int level, orientation, plane_index, i, y, ret;
1572  uint8_t rc_header_bak[sizeof(s->header_state)];
1573  uint8_t rc_block_bak[sizeof(s->block_state)];
1574 
1575  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)
1576  return ret;
1577 
1578  ff_init_range_encoder(c, pkt->data, pkt->size);
1579  ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1580 
1581  for(i=0; i < s->nb_planes; i++){
1582  int hshift= i ? s->chroma_h_shift : 0;
1583  int vshift= i ? s->chroma_v_shift : 0;
1584  for(y=0; y<AV_CEIL_RSHIFT(height, vshift); y++)
1585  memcpy(&s->input_picture->data[i][y * s->input_picture->linesize[i]],
1586  &pict->data[i][y * pict->linesize[i]],
1587  AV_CEIL_RSHIFT(width, hshift));
1589  AV_CEIL_RSHIFT(width, hshift), AV_CEIL_RSHIFT(height, vshift),
1590  EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
1591  EDGE_TOP | EDGE_BOTTOM);
1592 
1593  }
1594  emms_c();
1595  pic = s->input_picture;
1596  pic->pict_type = pict->pict_type;
1597  pic->quality = pict->quality;
1598 
1599  s->m.picture_number= avctx->frame_number;
1600  if(avctx->flags&AV_CODEC_FLAG_PASS2){
1602  s->keyframe = pic->pict_type == AV_PICTURE_TYPE_I;
1603  if(!(avctx->flags&AV_CODEC_FLAG_QSCALE)) {
1604  pic->quality = ff_rate_estimate_qscale(&s->m, 0);
1605  if (pic->quality < 0)
1606  return -1;
1607  }
1608  }else{
1609  s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
1611  }
1612 
1613  if(s->pass1_rc && avctx->frame_number == 0)
1614  pic->quality = 2*FF_QP2LAMBDA;
1615  if (pic->quality) {
1616  s->qlog = qscale2qlog(pic->quality);
1617  s->lambda = pic->quality * 3/2;
1618  }
1619  if (s->qlog < 0 || (!pic->quality && (avctx->flags & AV_CODEC_FLAG_QSCALE))) {
1620  s->qlog= LOSSLESS_QLOG;
1621  s->lambda = 0;
1622  }//else keep previous frame's qlog until after motion estimation
1623 
1624  if (s->current_picture->data[0]
1625 #if FF_API_EMU_EDGE
1626  && !(s->avctx->flags&CODEC_FLAG_EMU_EDGE)
1627 #endif
1628  ) {
1629  int w = s->avctx->width;
1630  int h = s->avctx->height;
1631 
1633  s->current_picture->linesize[0], w , h ,
1635  if (s->current_picture->data[2]) {
1642  }
1643  }
1644 
1646  av_frame_unref(avctx->coded_frame);
1647  ret = av_frame_ref(avctx->coded_frame, s->current_picture);
1648  if (ret < 0)
1649  return ret;
1650 
1653  s->m.current_picture.f->pts = pict->pts;
1654  if(pic->pict_type == AV_PICTURE_TYPE_P){
1655  int block_width = (width +15)>>4;
1656  int block_height= (height+15)>>4;
1657  int stride= s->current_picture->linesize[0];
1658 
1660  av_assert0(s->last_picture[0]->data[0]);
1661 
1662  s->m.avctx= s->avctx;
1663  s->m. last_picture.f = s->last_picture[0];
1664  s->m. new_picture.f = s->input_picture;
1665  s->m. last_picture_ptr= &s->m. last_picture;
1666  s->m.linesize = stride;
1667  s->m.uvlinesize= s->current_picture->linesize[1];
1668  s->m.width = width;
1669  s->m.height= height;
1670  s->m.mb_width = block_width;
1671  s->m.mb_height= block_height;
1672  s->m.mb_stride= s->m.mb_width+1;
1673  s->m.b8_stride= 2*s->m.mb_width+1;
1674  s->m.f_code=1;
1675  s->m.pict_type = pic->pict_type;
1676 #if FF_API_MOTION_EST
1677  s->m.me_method= s->avctx->me_method;
1678 #endif
1679  s->m.motion_est= s->motion_est;
1680  s->m.me.scene_change_score=0;
1681  s->m.me.dia_size = avctx->dia_size;
1683  s->m.out_format= FMT_H263;
1684  s->m.unrestricted_mv= 1;
1685 
1686  s->m.lambda = s->lambda;
1687  s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
1688  s->lambda2= s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
1689 
1690  s->m.mecc= s->mecc; //move
1691  s->m.qdsp= s->qdsp; //move
1692  s->m.hdsp = s->hdsp;
1693  ff_init_me(&s->m);
1694  s->hdsp = s->m.hdsp;
1695  s->mecc= s->m.mecc;
1696  }
1697 
1698  if(s->pass1_rc){
1699  memcpy(rc_header_bak, s->header_state, sizeof(s->header_state));
1700  memcpy(rc_block_bak, s->block_state, sizeof(s->block_state));
1701  }
1702 
1703 redo_frame:
1704 
1706 
1707  while( !(width >>(s->chroma_h_shift + s->spatial_decomposition_count))
1708  || !(height>>(s->chroma_v_shift + s->spatial_decomposition_count)))
1710 
1711  if (s->spatial_decomposition_count <= 0) {
1712  av_log(avctx, AV_LOG_ERROR, "Resolution too low\n");
1713  return AVERROR(EINVAL);
1714  }
1715 
1716  s->m.pict_type = pic->pict_type;
1717  s->qbias = pic->pict_type == AV_PICTURE_TYPE_P ? 2 : 0;
1718 
1720 
1722  for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1723  calculate_visual_weight(s, &s->plane[plane_index]);
1724  }
1725  }
1726 
1727  encode_header(s);
1728  s->m.misc_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1729  encode_blocks(s, 1);
1730  s->m.mv_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits;
1731 
1732  for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1733  Plane *p= &s->plane[plane_index];
1734  int w= p->width;
1735  int h= p->height;
1736  int x, y;
1737 // int bits= put_bits_count(&s->c.pb);
1738 
1739  if (!s->memc_only) {
1740  //FIXME optimize
1741  if(pict->data[plane_index]) //FIXME gray hack
1742  for(y=0; y<h; y++){
1743  for(x=0; x<w; x++){
1744  s->spatial_idwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<FRAC_BITS;
1745  }
1746  }
1747  predict_plane(s, s->spatial_idwt_buffer, plane_index, 0);
1748 
1749 #if FF_API_PRIVATE_OPT
1754 #endif
1755 
1756  if( plane_index==0
1757  && pic->pict_type == AV_PICTURE_TYPE_P
1758  && !(avctx->flags&AV_CODEC_FLAG_PASS2)
1760  ff_init_range_encoder(c, pkt->data, pkt->size);
1761  ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1763  s->keyframe=1;
1764  s->current_picture->key_frame=1;
1765  goto redo_frame;
1766  }
1767 
1768  if(s->qlog == LOSSLESS_QLOG){
1769  for(y=0; y<h; y++){
1770  for(x=0; x<w; x++){
1771  s->spatial_dwt_buffer[y*w + x]= (s->spatial_idwt_buffer[y*w + x] + (1<<(FRAC_BITS-1))-1)>>FRAC_BITS;
1772  }
1773  }
1774  }else{
1775  for(y=0; y<h; y++){
1776  for(x=0; x<w; x++){
1778  }
1779  }
1780  }
1781 
1783 
1784  if(s->pass1_rc && plane_index==0){
1785  int delta_qlog = ratecontrol_1pass(s, pic);
1786  if (delta_qlog <= INT_MIN)
1787  return -1;
1788  if(delta_qlog){
1789  //reordering qlog in the bitstream would eliminate this reset
1790  ff_init_range_encoder(c, pkt->data, pkt->size);
1791  memcpy(s->header_state, rc_header_bak, sizeof(s->header_state));
1792  memcpy(s->block_state, rc_block_bak, sizeof(s->block_state));
1793  encode_header(s);
1794  encode_blocks(s, 0);
1795  }
1796  }
1797 
1798  for(level=0; level<s->spatial_decomposition_count; level++){
1799  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1800  SubBand *b= &p->band[level][orientation];
1801 
1802  quantize(s, b, b->ibuf, b->buf, b->stride, s->qbias);
1803  if(orientation==0)
1804  decorrelate(s, b, b->ibuf, b->stride, pic->pict_type == AV_PICTURE_TYPE_P, 0);
1805  if (!s->no_bitstream)
1806  encode_subband(s, b, b->ibuf, b->parent ? b->parent->ibuf : NULL, b->stride, orientation);
1807  av_assert0(b->parent==NULL || b->parent->stride == b->stride*2);
1808  if(orientation==0)
1809  correlate(s, b, b->ibuf, b->stride, 1, 0);
1810  }
1811  }
1812 
1813  for(level=0; level<s->spatial_decomposition_count; level++){
1814  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1815  SubBand *b= &p->band[level][orientation];
1816 
1817  dequantize(s, b, b->ibuf, b->stride);
1818  }
1819  }
1820 
1822  if(s->qlog == LOSSLESS_QLOG){
1823  for(y=0; y<h; y++){
1824  for(x=0; x<w; x++){
1825  s->spatial_idwt_buffer[y*w + x]<<=FRAC_BITS;
1826  }
1827  }
1828  }
1829  predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1830  }else{
1831  //ME/MC only
1832  if(pic->pict_type == AV_PICTURE_TYPE_I){
1833  for(y=0; y<h; y++){
1834  for(x=0; x<w; x++){
1835  s->current_picture->data[plane_index][y*s->current_picture->linesize[plane_index] + x]=
1836  pict->data[plane_index][y*pict->linesize[plane_index] + x];
1837  }
1838  }
1839  }else{
1840  memset(s->spatial_idwt_buffer, 0, sizeof(IDWTELEM)*w*h);
1841  predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1842  }
1843  }
1844  if(s->avctx->flags&AV_CODEC_FLAG_PSNR){
1845  int64_t error= 0;
1846 
1847  if(pict->data[plane_index]) //FIXME gray hack
1848  for(y=0; y<h; y++){
1849  for(x=0; x<w; x++){
1850  int d= s->current_picture->data[plane_index][y*s->current_picture->linesize[plane_index] + x] - pict->data[plane_index][y*pict->linesize[plane_index] + x];
1851  error += d*d;
1852  }
1853  }
1854  s->avctx->error[plane_index] += error;
1855  s->encoding_error[plane_index] = error;
1856  }
1857 
1858  }
1859 
1861 
1862  ff_snow_release_buffer(avctx);
1863 
1865  s->current_picture->pict_type = pic->pict_type;
1866  s->current_picture->quality = pic->quality;
1867  s->m.frame_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1868  s->m.p_tex_bits = s->m.frame_bits - s->m.misc_bits - s->m.mv_bits;
1871  s->m.current_picture.f->quality = pic->quality;
1872  s->m.total_bits += 8*(s->c.bytestream - s->c.bytestream_start);
1873  if(s->pass1_rc)
1874  if (ff_rate_estimate_qscale(&s->m, 0) < 0)
1875  return -1;
1876  if(avctx->flags&AV_CODEC_FLAG_PASS1)
1877  ff_write_pass1_stats(&s->m);
1878  s->m.last_pict_type = s->m.pict_type;
1879  avctx->frame_bits = s->m.frame_bits;
1880  avctx->mv_bits = s->m.mv_bits;
1881  avctx->misc_bits = s->m.misc_bits;
1882  avctx->p_tex_bits = s->m.p_tex_bits;
1883 
1884  emms_c();
1885 
1887  s->encoding_error,
1888  (s->avctx->flags&AV_CODEC_FLAG_PSNR) ? 4 : 0,
1890 
1891 #if FF_API_ERROR_FRAME
1893  memcpy(s->current_picture->error, s->encoding_error, sizeof(s->encoding_error));
1895 #endif
1896 
1897  pkt->size = ff_rac_terminate(c);
1898  if (s->current_picture->key_frame)
1899  pkt->flags |= AV_PKT_FLAG_KEY;
1900  *got_packet = 1;
1901 
1902  return 0;
1903 }
1904 
1906 {
1907  SnowContext *s = avctx->priv_data;
1908 
1909  ff_snow_common_end(s);
1912  av_freep(&avctx->stats_out);
1913 
1914  return 0;
1915 }
1916 
1917 #define OFFSET(x) offsetof(SnowContext, x)
1918 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1919 static const AVOption options[] = {
1921  { "iter", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ITER }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" },
1922  { "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 },
1923  { "no_bitstream", "Skip final bitstream writeout.", OFFSET(no_bitstream), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1924  { "intra_penalty", "Penalty for intra blocks in block decission", OFFSET(intra_penalty), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1925  { "iterative_dia_size", "Dia size for the iterative ME", OFFSET(iterative_dia_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1926  { "sc_threshold", "Scene change threshold", OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, VE },
1927  { "pred", "Spatial decomposition type", OFFSET(pred), AV_OPT_TYPE_INT, { .i64 = 0 }, DWT_97, DWT_53, VE, "pred" },
1928  { "dwt97", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "pred" },
1929  { "dwt53", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "pred" },
1930  { NULL },
1931 };
1932 
1933 static const AVClass snowenc_class = {
1934  .class_name = "snow encoder",
1935  .item_name = av_default_item_name,
1936  .option = options,
1937  .version = LIBAVUTIL_VERSION_INT,
1938 };
1939 
1941  .name = "snow",
1942  .long_name = NULL_IF_CONFIG_SMALL("Snow"),
1943  .type = AVMEDIA_TYPE_VIDEO,
1944  .id = AV_CODEC_ID_SNOW,
1945  .priv_data_size = sizeof(SnowContext),
1946  .init = encode_init,
1947  .encode2 = encode_frame,
1948  .close = encode_end,
1949  .pix_fmts = (const enum AVPixelFormat[]){
1953  },
1954  .priv_class = &snowenc_class,
1955  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
1957 };
int last_block_max_depth
Definition: snow.h:167
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:1933
int version
Definition: snow.h:134
static av_cold int encode_end(AVCodecContext *avctx)
Definition: snowenc.c:1905
MpegEncContext m
Definition: snow.h:182
int frame_bits
bits used for the current frame
Definition: mpegvideo.h:338
int mv_scale
Definition: snow.h:159
#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:454
int ff_snow_frame_start(SnowContext *s)
Definition: snow.c:655
av_cold void ff_rate_control_uninit(MpegEncContext *s)
Definition: ratecontrol.c:312
#define QSHIFT
Definition: snow.h:42
#define P_MEDIAN
Definition: snowenc.c:221
int picture_number
Definition: mpegvideo.h:124
const char * s
Definition: avisynth_c.h:768
#define P
#define P_TOPRIGHT
Definition: snowenc.c:220
AVCodecContext * avctx
Definition: snow.h:115
int block_max_depth
Definition: snow.h:166
int last_spatial_decomposition_count
Definition: snow.h:139
static int shift(int a, int b)
Definition: sonic.c:82
int chroma_v_shift
Definition: snow.h:152
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
int skip
set if ME is skipped for the current MB
Definition: motion_est.h:49
AVOption.
Definition: opt.h:245
int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)
Definition: avpacket.c:646
int pass1_rc
Definition: snow.h:158
uint64_t error[AV_NUM_DATA_POINTERS]
error
Definition: avcodec.h:3014
#define CODEC_FLAG_PASS2
Definition: avcodec.h:1089
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
RateControlEntry * entry
Definition: ratecontrol.h:65
int * run_buffer
Definition: snow.h:149
int64_t bit_rate
the average bitrate
Definition: avcodec.h:1740
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
#define P_LEFT
Definition: snowenc.c:218
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:133
int no_bitstream
Definition: snow.h:176
uint8_t * current_mv_penalty
Definition: motion_est.h:94
#define BLOCK_INTRA
Intra block, inter otherwise.
Definition: snow.h:57
#define FF_MPV_COMMON_OPTS
Definition: mpegvideo.h:604
Range coder.
uint8_t * bytestream_end
Definition: rangecoder.h:44
int size
Definition: avcodec.h:1601
const char * b
Definition: vf_curves.c:113
#define FF_MPV_OPT_FLAGS
Definition: mpegvideo.h:603
int av_log2(unsigned v)
Definition: intmath.c:26
int scenechange_threshold
Definition: snow.h:180
int sub_penalty_factor
Definition: motion_est.h:67
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1903
int max_ref_frames
Definition: snow.h:141
uint32_t * score_map
map to store the scores
Definition: motion_est.h:59
#define FF_CMP_W97
Definition: avcodec.h:2124
mpegvideo header.
int8_t last_hcoeff[HTAPS_MAX/2]
Definition: snow.h:109
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:252
int scene_change_score
Definition: motion_est.h:87
int ff_snow_common_init_after_header(AVCodecContext *avctx)
Definition: snow.c:514
static void update_last_header_values(SnowContext *s)
Definition: snowenc.c:1460
int keyframe
Definition: snow.h:132
uint8_t run
Definition: svq3.c:206
static AVPacket pkt
#define EDGE_TOP
#define FF_API_EMU_EDGE
Definition: version.h:118
#define FF_LAMBDA_SHIFT
Definition: avutil.h:219
QpelDSPContext qdsp
Definition: mpegvideo.h:232
AVCodec.
Definition: avcodec.h:3589
uint8_t(* mv_penalty)[MAX_DMV *2+1]
bit amount needed to encode a MV
Definition: motion_est.h:93
int qscale
QP.
Definition: mpegvideo.h:201
void ff_snow_reset_contexts(SnowContext *s)
Definition: snow.c:96
static void set_blocks(SnowContext *s, int level, int x, int y, int l, int cb, int cr, int mx, int my, int ref, int type)
Definition: snow.h:461
short IDWTELEM
Definition: dirac_dwt.h:27
enum AVPictureType last_picture
Definition: movenc.c:68
HpelDSPContext hdsp
Definition: snow.h:118
attribute_deprecated int me_method
This option does nothing.
Definition: avcodec.h:1910
uint32_t ff_square_tab[512]
Definition: me_cmp.c:32
AVCodec ff_snow_encoder
Definition: snowenc.c:1940
#define log2(x)
Definition: libm.h:404
MECmpContext mecc
Definition: snow.h:117
static int encode_subband_c0run(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation)
Definition: snowenc.c:775
#define OFFSET(x)
Definition: snowenc.c:1917
int qlog
log(qscale)/log[2^(1/6)]
Definition: snow.h:87
int ff_rac_terminate(RangeCoder *c)
Definition: rangecoder.c:104
Definition: snow.h:50
int width
Definition: cfhd.h:48
static int get_penalty_factor(int lambda, int lambda2, int type)
Definition: snowenc.c:193
static int16_t block[64]
Definition: dct.c:113
uint8_t level
Definition: snow.h:60
attribute_deprecated int mv_bits
Definition: avcodec.h:2818
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:53
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:97
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 b_height
Definition: snow.h:165
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: snowenc.c:1563
ScratchpadContext sc
Definition: mpegvideo.h:199
uint8_t
#define ME_MAP_SIZE
Definition: motion_est.h:38
int16_t mx
Motion vector component X, see mv_scale.
Definition: snow.h:51
#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:141
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:63
static float search(FOCContext *foc, int pass, int maxpass, int xmin, int xmax, int ymin, int ymax, int *best_x, int *best_y, float best_score)
Definition: vf_find_rect.c:156
AVOptions.
enum OutputFormat out_format
output format
Definition: mpegvideo.h:101
uint32_t * ref_scores[MAX_REF_FRAMES]
Definition: snow.h:144
int ff_get_mb_score(struct MpegEncContext *s, int mx, int my, int src_index, int ref_index, int size, int h, int add_rate)
Motion estimation context.
Definition: motion_est.h:47
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
Definition: frame.c:375
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:268
int misc_bits
cbp, mb_type
Definition: mpegvideo.h:352
int me_cmp
motion estimation comparison function
Definition: avcodec.h:2093
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:177
#define ENCODER_EXTRA_BITS
Definition: snow.h:74
static void calculate_visual_weight(SnowContext *s, Plane *p)
Definition: snowenc.c:1537
#define height
int16_t my
Motion vector component Y, see mv_scale.
Definition: snow.h:52
uint8_t * data
Definition: avcodec.h:1600
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:63
static void encode_blocks(SnowContext *s, int search)
Definition: snowenc.c:1221
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:126
ptrdiff_t size
Definition: opengl_enc.c:101
void ff_snow_release_buffer(AVCodecContext *avctx)
Definition: snow.c:640
#define QEXPSHIFT
Definition: snow.h:506
char * stats_out
pass1 encoding statistics output buffer
Definition: avcodec.h:2844
#define FF_CMP_SSE
Definition: avcodec.h:2113
#define AV_INPUT_BUFFER_MIN_SIZE
minimum encoding buffer size Used to avoid some checks during header writing.
Definition: avcodec.h:740
attribute_deprecated uint64_t error[AV_NUM_DATA_POINTERS]
Definition: frame.h:306
static void put_symbol2(RangeCoder *c, uint8_t *state, int v, int log2)
Definition: snow.h:561
#define av_log(a,...)
#define ff_sqrt
Definition: mathops.h:215
Definition: cfhd.h:43
#define ROUNDED_DIV(a, b)
Definition: common.h:56
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1632
#define DWT_97
Definition: snow_dwt.h:66
BlockNode * block
Definition: snow.h:170
MpegvideoEncDSPContext mpvencdsp
Definition: snow.h:122
int last_diag_mc
Definition: snow.h:110
#define EDGE_WIDTH
Definition: mpegpicture.h:33
#define MAX_DMV
Definition: motion_est.h:37
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int16_t(*[MAX_REF_FRAMES] ref_mvs)[2]
Definition: snow.h:143
#define MB_SIZE
Definition: cinepakenc.c:86
#define AV_CODEC_FLAG_4MV
4 MV per MB allowed / advanced prediction for H.263.
Definition: avcodec.h:836
int64_t total_bits
Definition: mpegvideo.h:337
unsigned me_cache_generation
Definition: snow.h:173
av_default_item_name
#define AVERROR(e)
Definition: error.h:43
av_cold int ff_rate_control_init(MpegEncContext *s)
Definition: ratecontrol.c:84
int me_sub_cmp
subpixel motion estimation comparison function
Definition: avcodec.h:2099
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:154
void ff_write_pass1_stats(MpegEncContext *s)
Definition: ratecontrol.c:42
int unrestricted_mv
mv can point outside of the coded picture
Definition: mpegvideo.h:220
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
int diag_mc
Definition: snow.h:105
const char * r
Definition: vf_curves.c:111
static void pred_mv(DiracBlock *block, int stride, int x, int y, int ref)
Definition: diracdec.c:1340
#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:1770
static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index)
Definition: snowenc.c:509
#define CODEC_FLAG_QSCALE
Definition: avcodec.h:1064
int stride
Definition: cfhd.h:46
const char * name
Name of the codec implementation.
Definition: avcodec.h:3596
static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median)
Definition: snowenc.c:1350
int quarter_sample
1->qpel, 0->half pel ME/MC
Definition: mpegvideo.h:399
static int square(int x)
Definition: roqvideoenc.c:113
int lambda
Definition: snow.h:156
int intra_penalty
Definition: snow.h:177
#define FFMAX(a, b)
Definition: common.h:94
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:226
uint8_t * emu_edge_buffer
Definition: snow.h:185
uint8_t * bytestream
Definition: rangecoder.h:43
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1606
uint8_t color[3]
Color for intra.
Definition: snow.h:54
#define pass
Definition: fft_template.c:532
int ref_frames
Definition: snow.h:142
int htaps
Definition: snow.h:103
int qlog
Definition: snow.h:154
int refs
number of reference frames
Definition: avcodec.h:2356
#define FF_CMP_BIT
Definition: avcodec.h:2117
SubBand band[DWT_LEVELS][4]
Definition: cfhd.h:68
const int8_t ff_quant3bA[256]
Definition: snowdata.h:104
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:258
uint8_t * ibuf
Definition: cfhd.h:53
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
#define AV_CODEC_FLAG_QSCALE
Use fixed qscale.
Definition: avcodec.h:832
#define FFMIN(a, b)
Definition: common.h:96
int display_picture_number
picture number in display order
Definition: frame.h:289
iterative search
Definition: avcodec.h:770
int me_method
ME algorithm.
Definition: mpegvideo.h:256
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:943
#define width
#define ME_CACHE_SIZE
Definition: snow.h:171
#define LOSSLESS_QLOG
Definition: snow.h:44
int width
picture width / height.
Definition: avcodec.h:1862
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:181
#define VE
Definition: snowenc.c:1918
uint8_t * scratchbuf
Definition: snow.h:184
#define AV_CODEC_FLAG_PSNR
error[?] variables will be set during encoding.
Definition: avcodec.h:864
static int encode_q_branch(SnowContext *s, int level, int x, int y)
Definition: snowenc.c:225
Plane plane[MAX_PLANES]
Definition: snow.h:169
float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run)
Definition: ratecontrol.c:753
#define AV_CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
Definition: avcodec.h:848
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:279
int b_width
Definition: snow.h:164
void ff_build_rac_states(RangeCoder *c, int factor, int max_p)
Definition: rangecoder.c:63
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:294
MotionEstContext me
Definition: mpegvideo.h:282
int last_mv_scale
Definition: snow.h:160
#define src
Definition: vp9dsp.c:530
void avcodec_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: imgconvert.c:38
int chroma_h_shift
Definition: snow.h:151
#define FF_CMP_SAD
Definition: avcodec.h:2112
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
static av_always_inline int same_block(BlockNode *a, BlockNode *b)
Definition: snow.h:269
attribute_deprecated int misc_bits
Definition: avcodec.h:2832
uint8_t block_state[128+32 *128]
Definition: snow.h:131
int qbias
Definition: snow.h:161
int coded_picture_number
picture number in bitstream order
Definition: frame.h:285
#define FF_LAMBDA_SCALE
Definition: avutil.h:220
int ff_snow_get_buffer(SnowContext *s, AVFrame *frame)
Definition: snow.c:69
unsigned int lambda2
(lambda*lambda) >> FF_LAMBDA_SHIFT
Definition: mpegvideo.h:204
Libavcodec external API header.
static void encode_header(SnowContext *s)
Definition: snowenc.c:1387
attribute_deprecated int scenechange_threshold
Definition: avcodec.h:2260
#define FF_CMP_RD
Definition: avcodec.h:2118
ptrdiff_t linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:131
AVCodecContext * avctx
Definition: motion_est.h:48
#define LOG2_OBMC_MAX
Definition: snow.h:48
int spatial_decomposition_count
Definition: snow.h:138
int DWTELEM
Definition: dirac_dwt.h:26
attribute_deprecated int prediction_method
Definition: avcodec.h:2066
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:215
void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type)
Definition: me_cmp.c:440
main external API structure.
Definition: avcodec.h:1675
int8_t hcoeff[HTAPS_MAX/2]
Definition: snow.h:104
#define QROOT
Definition: snow.h:43
void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, ptrdiff_t stride, int sx, int sy, int b_w, int b_h, const BlockNode *block, int plane_index, int w, int h)
Definition: snow.c:327
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:97
#define FF_CMP_NSSE
Definition: avcodec.h:2122
int ff_snow_alloc_blocks(SnowContext *s)
Definition: snow.c:110
#define FF_CMP_SATD
Definition: avcodec.h:2114
struct SubBand * parent
Definition: diracdec.c:97
void * buf
Definition: avisynth_c.h:690
#define FF_CMP_DCT
Definition: avcodec.h:2115
GLint GLenum type
Definition: opengl_enc.c:105
static int get_rac_count(RangeCoder *c)
Definition: rangecoder.h:77
static void encode_q_branch2(SnowContext *s, int level, int x, int y)
Definition: snowenc.c:453
Replacements for frequently missing libm functions.
unsigned me_cache[ME_CACHE_SIZE]
Definition: snow.h:172
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
Describe the class of an AVClass context structure.
Definition: log.h:67
av_cold void ff_init_range_encoder(RangeCoder *c, uint8_t *buf, int buf_size)
Definition: rangecoder.c:42
int64_t mc_mb_var_sum
motion compensated MB variance for current frame
Definition: mpegpicture.h:82
int index
Definition: gxfenc.c:89
struct AVFrame * f
Definition: mpegpicture.h:46
int nb_planes
Definition: snow.h:168
int pred
Definition: snow.h:191
static int get_block_bits(SnowContext *s, int x, int y, int w)
Definition: snowenc.c:567
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:96
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
Definition: mpegvideo.h:132
#define FF_CMP_PSNR
Definition: avcodec.h:2116
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:146
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: utils.c:1695
#define FF_CMP_W53
Definition: avcodec.h:2123
uint8_t header_state[32]
Definition: snow.h:130
int motion_est
Definition: snow.h:178
int f_code
forward MV resolution
Definition: mpegvideo.h:235
#define FF_CMP_DCT264
Definition: avcodec.h:2126
int last_qlog
Definition: snow.h:155
uint64_t encoding_error[AV_NUM_DATA_POINTERS]
Definition: snow.h:189
attribute_deprecated int p_tex_bits
Definition: avcodec.h:2824
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:209
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
int spatial_scalability
Definition: snow.h:153
static int qscale2qlog(int qscale)
Definition: snowenc.c:1480
static int pix_sum(uint8_t *pix, int line_size, int w, int h)
Definition: snowenc.c:161
int ff_snow_common_init(AVCodecContext *avctx)
static void encode_qlogs(SnowContext *s)
Definition: snowenc.c:1374
int motion_est
ME algorithm.
Definition: mpegvideo.h:258
int iterative_dia_size
Definition: snow.h:179
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:485
static struct @244 state
int global_quality
Global quality for codecs which cannot change it per frame.
Definition: avcodec.h:1756
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:844
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:198
int spatial_decomposition_type
Definition: snow.h:135
AVFrame * current_picture
Definition: snow.h:125
int memc_only
Definition: snow.h:175
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:605
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
Definition: mpegvideo.h:128
struct AVCodecContext * avctx
Definition: mpegvideo.h:95
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1888
static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index)
Definition: snowenc.c:706
#define FF_ME_ITER
Definition: snowenc.c:36
#define CODEC_FLAG_EMU_EDGE
Definition: avcodec.h:1096
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
int mb_cmp
macroblock comparison function (not supported yet)
Definition: avcodec.h:2105
MECmpContext mecc
Definition: mpegvideo.h:228
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
Y , 8bpp.
Definition: pixfmt.h:70
#define MID_STATE
Definition: snow.h:39
int temporal_decomposition_type
Definition: snow.h:137
#define QBIAS_SHIFT
Definition: snow.h:163
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:80
common internal api header.
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
Definition: mpegvideo.h:127
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
IDWTELEM * temp_idwt_buffer
Definition: snow.h:148
void ff_spatial_dwt(DWTELEM *buffer, DWTELEM *temp, int width, int height, int stride, int type, int decomposition_count)
Definition: snow_dwt.c:319
static double c[64]
int last_pict_type
Definition: mpegvideo.h:211
#define LOG2_MB_SIZE
Definition: snow.h:72
#define put_rac(C, S, B)
DWTELEM * spatial_dwt_buffer
Definition: snow.h:145
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:3097
static av_cold int encode_init(AVCodecContext *avctx)
Definition: snowenc.c:38
int lambda2
Definition: snow.h:157
me_cmp_func me_sub_cmp[6]
Definition: me_cmp.h:73
uint8_t state[7+512][32]
Definition: snow.h:95
static const AVOption options[]
Definition: snowenc.c:1919
uint32_t * map
map to avoid duplicate evaluations
Definition: motion_est.h:58
IDWTELEM * spatial_idwt_buffer
Definition: snow.h:147
uint8_t * bytestream_start
Definition: rangecoder.h:42
#define AV_CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
Definition: avcodec.h:852
void * priv_data
Definition: avcodec.h:1717
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:948
static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride)
Definition: snowenc.c:1304
int dia_size
ME diamond size & shape.
Definition: avcodec.h:2135
attribute_deprecated int frame_bits
Definition: avcodec.h:2836
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:81
uint8_t * obmc_scratchpad
Definition: mpegpicture.h:38
void(* draw_edges)(uint8_t *buf, int wrap, int width, int height, int w, int h, int sides)
static void init_ref(MotionEstContext *c, uint8_t *src[3], uint8_t *ref[3], uint8_t *ref2[3], int x, int y, int ref_index)
Definition: motion_est.c:83
int colorspace_type
Definition: snow.h:150
static uint8_t tmp[8]
Definition: des.c:38
int last_htaps
Definition: snow.h:108
int64_t bit_rate
wanted bit rate
Definition: mpegvideo.h:100
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:253
int height
Definition: cfhd.h:50
#define DWT_53
Definition: snow_dwt.h:67
#define FF_QP2LAMBDA
factor to convert from H.263 QP to lambda
Definition: avutil.h:221
#define lrint
Definition: tablegen.h:53
int fast_mc
Definition: snow.h:106
#define EDGE_BOTTOM
int width
Definition: cfhd.h:57
av_cold void ff_snow_common_end(SnowContext *s)
Definition: snow.c:693
RangeCoder c
Definition: snow.h:116
uint8_t ff_qexp[QROOT]
Definition: snowdata.h:128
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:2468
DWTELEM * buf
Definition: snow.h:88
#define P_TOP
Definition: snowenc.c:219
#define av_freep(p)
#define MAX_REF_FRAMES
Definition: snow.h:46
#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:55
#define stride
static int ratecontrol_1pass(SnowContext *s, AVFrame *pict)
Definition: snowenc.c:1485
AVFrame * last_picture[MAX_REF_FRAMES]
Definition: snow.h:126
int height
Definition: cfhd.h:58
int last_qbias
Definition: snow.h:162
static double cr(void *priv, double x, double y)
Definition: vf_geq.c:98
AVFrame * input_picture
new_picture with the internal linesizes
Definition: snow.h:124
static int pix_norm1(uint8_t *pix, int line_size, int w)
Definition: snowenc.c:177
int temporal_decomposition_count
Definition: snow.h:140
int64_t mb_var_sum
sum of MB variance for current frame
Definition: mpegpicture.h:81
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1577
static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median)
Definition: snowenc.c:1326
int(* sub_motion_search)(struct MpegEncContext *s, int *mx_ptr, int *my_ptr, int dmin, int src_index, int ref_index, int size, int h)
Definition: motion_est.h:95
#define BLOCK_OPT
Block needs no checks in this round of iterative motion estiation.
Definition: snow.h:58
static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias)
Definition: snowenc.c:1243
static int encode_subband(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation)
Definition: snowenc.c:895
int last_spatial_decomposition_type
Definition: snow.h:136
#define t2
Definition: regdef.h:30
Predicted.
Definition: avutil.h:269
unsigned int lambda
Lagrange multiplier used in rate distortion.
Definition: mpegvideo.h:203
Definition: cfhd.h:56
#define tb
Definition: regdef.h:68
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
HpelDSPContext hdsp
Definition: mpegvideo.h:226
static void iterative_me(SnowContext *s)
Definition: snowenc.c:994
QpelDSPContext qdsp
Definition: snow.h:119
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:902