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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 static av_cold int encode_init(AVCodecContext *avctx)
37 {
38  SnowContext *s = avctx->priv_data;
39  int plane_index, ret;
40  int i;
41 
42 #if FF_API_PRIVATE_OPT
43 FF_DISABLE_DEPRECATION_WARNINGS
44  if (avctx->prediction_method)
45  s->pred = avctx->prediction_method;
46 FF_ENABLE_DEPRECATION_WARNINGS
47 #endif
48 
49  if(s->pred == DWT_97
50  && (avctx->flags & AV_CODEC_FLAG_QSCALE)
51  && avctx->global_quality == 0){
52  av_log(avctx, AV_LOG_ERROR, "The 9/7 wavelet is incompatible with lossless mode.\n");
53  return AVERROR(EINVAL);
54  }
55 #if FF_API_MOTION_EST
56 FF_DISABLE_DEPRECATION_WARNINGS
57  if (avctx->me_method == ME_ITER)
58  s->motion_est = FF_ME_ITER;
59 FF_ENABLE_DEPRECATION_WARNINGS
60 #endif
61 
62  s->spatial_decomposition_type= s->pred; //FIXME add decorrelator type r transform_type
63 
64  s->mv_scale = (avctx->flags & AV_CODEC_FLAG_QPEL) ? 2 : 4;
65  s->block_max_depth= (avctx->flags & AV_CODEC_FLAG_4MV ) ? 1 : 0;
66 
67  for(plane_index=0; plane_index<3; plane_index++){
68  s->plane[plane_index].diag_mc= 1;
69  s->plane[plane_index].htaps= 6;
70  s->plane[plane_index].hcoeff[0]= 40;
71  s->plane[plane_index].hcoeff[1]= -10;
72  s->plane[plane_index].hcoeff[2]= 2;
73  s->plane[plane_index].fast_mc= 1;
74  }
75 
76  if ((ret = ff_snow_common_init(avctx)) < 0) {
77  return ret;
78  }
79  ff_mpegvideoencdsp_init(&s->mpvencdsp, avctx);
80 
81  ff_snow_alloc_blocks(s);
82 
83  s->version=0;
84 
85  s->m.avctx = avctx;
86  s->m.bit_rate= avctx->bit_rate;
87  s->m.lmin = avctx->mb_lmin;
88  s->m.lmax = avctx->mb_lmax;
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&AV_CODEC_FLAG_QSCALE)){
110  ret = ff_rate_control_init(&s->m);
111  if(ret < 0)
112  return ret;
113  }
114  s->pass1_rc= !(avctx->flags & (AV_CODEC_FLAG_QSCALE|AV_CODEC_FLAG_PASS2));
115 
116  switch(avctx->pix_fmt){
117  case AV_PIX_FMT_YUV444P:
118 // case AV_PIX_FMT_YUV422P:
119  case AV_PIX_FMT_YUV420P:
120 // case AV_PIX_FMT_YUV411P:
121  case AV_PIX_FMT_YUV410P:
122  s->nb_planes = 3;
123  s->colorspace_type= 0;
124  break;
125  case AV_PIX_FMT_GRAY8:
126  s->nb_planes = 1;
127  s->colorspace_type = 1;
128  break;
129 /* case AV_PIX_FMT_RGB32:
130  s->colorspace= 1;
131  break;*/
132  default:
133  av_log(avctx, AV_LOG_ERROR, "pixel format not supported\n");
134  return AVERROR_PATCHWELCOME;
135  }
136  avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
137 
138  ff_set_cmp(&s->mecc, s->mecc.me_cmp, s->avctx->me_cmp);
139  ff_set_cmp(&s->mecc, s->mecc.me_sub_cmp, s->avctx->me_sub_cmp);
140 
141  s->input_picture = av_frame_alloc();
142  if (!s->input_picture)
143  return AVERROR(ENOMEM);
144 
145  if ((ret = ff_snow_get_buffer(s, s->input_picture)) < 0)
146  return ret;
147 
148  if(s->motion_est == FF_ME_ITER){
149  int size= s->b_width * s->b_height << 2*s->block_max_depth;
150  for(i=0; i<s->max_ref_frames; i++){
151  s->ref_mvs[i]= av_mallocz_array(size, sizeof(int16_t[2]));
152  s->ref_scores[i]= av_mallocz_array(size, sizeof(uint32_t));
153  if (!s->ref_mvs[i] || !s->ref_scores[i])
154  return AVERROR(ENOMEM);
155  }
156  }
157 
158  return 0;
159 }
160 
161 //near copy & paste from dsputil, FIXME
162 static int pix_sum(uint8_t * pix, int line_size, int w, int h)
163 {
164  int s, i, j;
165 
166  s = 0;
167  for (i = 0; i < h; i++) {
168  for (j = 0; j < w; j++) {
169  s += pix[0];
170  pix ++;
171  }
172  pix += line_size - w;
173  }
174  return s;
175 }
176 
177 //near copy & paste from dsputil, FIXME
178 static int pix_norm1(uint8_t * pix, int line_size, int w)
179 {
180  int s, i, j;
181  uint32_t *sq = ff_square_tab + 256;
182 
183  s = 0;
184  for (i = 0; i < w; i++) {
185  for (j = 0; j < w; j ++) {
186  s += sq[pix[0]];
187  pix ++;
188  }
189  pix += line_size - w;
190  }
191  return s;
192 }
193 
194 static inline int get_penalty_factor(int lambda, int lambda2, int type){
195  switch(type&0xFF){
196  default:
197  case FF_CMP_SAD:
198  return lambda>>FF_LAMBDA_SHIFT;
199  case FF_CMP_DCT:
200  return (3*lambda)>>(FF_LAMBDA_SHIFT+1);
201  case FF_CMP_W53:
202  return (4*lambda)>>(FF_LAMBDA_SHIFT);
203  case FF_CMP_W97:
204  return (2*lambda)>>(FF_LAMBDA_SHIFT);
205  case FF_CMP_SATD:
206  case FF_CMP_DCT264:
207  return (2*lambda)>>FF_LAMBDA_SHIFT;
208  case FF_CMP_RD:
209  case FF_CMP_PSNR:
210  case FF_CMP_SSE:
211  case FF_CMP_NSSE:
212  return lambda2>>FF_LAMBDA_SHIFT;
213  case FF_CMP_BIT:
214  return 1;
215  }
216 }
217 
218 //FIXME copy&paste
219 #define P_LEFT P[1]
220 #define P_TOP P[2]
221 #define P_TOPRIGHT P[3]
222 #define P_MEDIAN P[4]
223 #define P_MV1 P[9]
224 #define FLAG_QPEL 1 //must be 1
225 
226 static int encode_q_branch(SnowContext *s, int level, int x, int y){
227  uint8_t p_buffer[1024];
228  uint8_t i_buffer[1024];
229  uint8_t p_state[sizeof(s->block_state)];
230  uint8_t i_state[sizeof(s->block_state)];
231  RangeCoder pc, ic;
232  uint8_t *pbbak= s->c.bytestream;
233  uint8_t *pbbak_start= s->c.bytestream_start;
234  int score, score2, iscore, i_len, p_len, block_s, sum, base_bits;
235  const int w= s->b_width << s->block_max_depth;
236  const int h= s->b_height << s->block_max_depth;
237  const int rem_depth= s->block_max_depth - level;
238  const int index= (x + y*w) << rem_depth;
239  const int block_w= 1<<(LOG2_MB_SIZE - level);
240  int trx= (x+1)<<rem_depth;
241  int try= (y+1)<<rem_depth;
242  const BlockNode *left = x ? &s->block[index-1] : &null_block;
243  const BlockNode *top = y ? &s->block[index-w] : &null_block;
244  const BlockNode *right = trx<w ? &s->block[index+1] : &null_block;
245  const BlockNode *bottom= try<h ? &s->block[index+w] : &null_block;
246  const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
247  const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
248  int pl = left->color[0];
249  int pcb= left->color[1];
250  int pcr= left->color[2];
251  int pmx, pmy;
252  int mx=0, my=0;
253  int l,cr,cb;
254  const int stride= s->current_picture->linesize[0];
255  const int uvstride= s->current_picture->linesize[1];
256  uint8_t *current_data[3]= { s->input_picture->data[0] + (x + y* stride)*block_w,
257  s->input_picture->data[1] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift),
258  s->input_picture->data[2] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift)};
259  int P[10][2];
260  int16_t last_mv[3][2];
261  int qpel= !!(s->avctx->flags & AV_CODEC_FLAG_QPEL); //unused
262  const int shift= 1+qpel;
263  MotionEstContext *c= &s->m.me;
264  int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
265  int mx_context= av_log2(2*FFABS(left->mx - top->mx));
266  int my_context= av_log2(2*FFABS(left->my - top->my));
267  int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
268  int ref, best_ref, ref_score, ref_mx, ref_my;
269 
270  av_assert0(sizeof(s->block_state) >= 256);
271  if(s->keyframe){
272  set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
273  return 0;
274  }
275 
276 // clip predictors / edge ?
277 
278  P_LEFT[0]= left->mx;
279  P_LEFT[1]= left->my;
280  P_TOP [0]= top->mx;
281  P_TOP [1]= top->my;
282  P_TOPRIGHT[0]= tr->mx;
283  P_TOPRIGHT[1]= tr->my;
284 
285  last_mv[0][0]= s->block[index].mx;
286  last_mv[0][1]= s->block[index].my;
287  last_mv[1][0]= right->mx;
288  last_mv[1][1]= right->my;
289  last_mv[2][0]= bottom->mx;
290  last_mv[2][1]= bottom->my;
291 
292  s->m.mb_stride=2;
293  s->m.mb_x=
294  s->m.mb_y= 0;
295  c->skip= 0;
296 
297  av_assert1(c-> stride == stride);
298  av_assert1(c->uvstride == uvstride);
299 
300  c->penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_cmp);
301  c->sub_penalty_factor= get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_sub_cmp);
302  c->mb_penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->mb_cmp);
303  c->current_mv_penalty= c->mv_penalty[s->m.f_code=1] + MAX_DMV;
304 
305  c->xmin = - x*block_w - 16+3;
306  c->ymin = - y*block_w - 16+3;
307  c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
308  c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
309 
310  if(P_LEFT[0] > (c->xmax<<shift)) P_LEFT[0] = (c->xmax<<shift);
311  if(P_LEFT[1] > (c->ymax<<shift)) P_LEFT[1] = (c->ymax<<shift);
312  if(P_TOP[0] > (c->xmax<<shift)) P_TOP[0] = (c->xmax<<shift);
313  if(P_TOP[1] > (c->ymax<<shift)) P_TOP[1] = (c->ymax<<shift);
314  if(P_TOPRIGHT[0] < (c->xmin<<shift)) P_TOPRIGHT[0]= (c->xmin<<shift);
315  if(P_TOPRIGHT[0] > (c->xmax<<shift)) P_TOPRIGHT[0]= (c->xmax<<shift); //due to pmx no clip
316  if(P_TOPRIGHT[1] > (c->ymax<<shift)) P_TOPRIGHT[1]= (c->ymax<<shift);
317 
318  P_MEDIAN[0]= mid_pred(P_LEFT[0], P_TOP[0], P_TOPRIGHT[0]);
319  P_MEDIAN[1]= mid_pred(P_LEFT[1], P_TOP[1], P_TOPRIGHT[1]);
320 
321  if (!y) {
322  c->pred_x= P_LEFT[0];
323  c->pred_y= P_LEFT[1];
324  } else {
325  c->pred_x = P_MEDIAN[0];
326  c->pred_y = P_MEDIAN[1];
327  }
328 
329  score= INT_MAX;
330  best_ref= 0;
331  for(ref=0; ref<s->ref_frames; ref++){
332  init_ref(c, current_data, s->last_picture[ref]->data, NULL, block_w*x, block_w*y, 0);
333 
334  ref_score= ff_epzs_motion_search(&s->m, &ref_mx, &ref_my, P, 0, /*ref_index*/ 0, last_mv,
335  (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w);
336 
337  av_assert2(ref_mx >= c->xmin);
338  av_assert2(ref_mx <= c->xmax);
339  av_assert2(ref_my >= c->ymin);
340  av_assert2(ref_my <= c->ymax);
341 
342  ref_score= c->sub_motion_search(&s->m, &ref_mx, &ref_my, ref_score, 0, 0, level-LOG2_MB_SIZE+4, block_w);
343  ref_score= ff_get_mb_score(&s->m, ref_mx, ref_my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0);
344  ref_score+= 2*av_log2(2*ref)*c->penalty_factor;
345  if(s->ref_mvs[ref]){
346  s->ref_mvs[ref][index][0]= ref_mx;
347  s->ref_mvs[ref][index][1]= ref_my;
348  s->ref_scores[ref][index]= ref_score;
349  }
350  if(score > ref_score){
351  score= ref_score;
352  best_ref= ref;
353  mx= ref_mx;
354  my= ref_my;
355  }
356  }
357  //FIXME if mb_cmp != SSE then intra cannot be compared currently and mb_penalty vs. lambda2
358 
359  // subpel search
360  base_bits= get_rac_count(&s->c) - 8*(s->c.bytestream - s->c.bytestream_start);
361  pc= s->c;
362  pc.bytestream_start=
363  pc.bytestream= p_buffer; //FIXME end/start? and at the other stoo
364  memcpy(p_state, s->block_state, sizeof(s->block_state));
365 
366  if(level!=s->block_max_depth)
367  put_rac(&pc, &p_state[4 + s_context], 1);
368  put_rac(&pc, &p_state[1 + left->type + top->type], 0);
369  if(s->ref_frames > 1)
370  put_symbol(&pc, &p_state[128 + 1024 + 32*ref_context], best_ref, 0);
371  pred_mv(s, &pmx, &pmy, best_ref, left, top, tr);
372  put_symbol(&pc, &p_state[128 + 32*(mx_context + 16*!!best_ref)], mx - pmx, 1);
373  put_symbol(&pc, &p_state[128 + 32*(my_context + 16*!!best_ref)], my - pmy, 1);
374  p_len= pc.bytestream - pc.bytestream_start;
375  score += (s->lambda2*(get_rac_count(&pc)-base_bits))>>FF_LAMBDA_SHIFT;
376 
377  block_s= block_w*block_w;
378  sum = pix_sum(current_data[0], stride, block_w, block_w);
379  l= (sum + block_s/2)/block_s;
380  iscore = pix_norm1(current_data[0], stride, block_w) - 2*l*sum + l*l*block_s;
381 
382  if (s->nb_planes > 2) {
383  block_s= block_w*block_w>>(s->chroma_h_shift + s->chroma_v_shift);
384  sum = pix_sum(current_data[1], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
385  cb= (sum + block_s/2)/block_s;
386  // iscore += pix_norm1(&current_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s;
387  sum = pix_sum(current_data[2], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
388  cr= (sum + block_s/2)/block_s;
389  // iscore += pix_norm1(&current_mb[2][0], uvstride, block_w>>1) - 2*cr*sum + cr*cr*block_s;
390  }else
391  cb = cr = 0;
392 
393  ic= s->c;
394  ic.bytestream_start=
395  ic.bytestream= i_buffer; //FIXME end/start? and at the other stoo
396  memcpy(i_state, s->block_state, sizeof(s->block_state));
397  if(level!=s->block_max_depth)
398  put_rac(&ic, &i_state[4 + s_context], 1);
399  put_rac(&ic, &i_state[1 + left->type + top->type], 1);
400  put_symbol(&ic, &i_state[32], l-pl , 1);
401  if (s->nb_planes > 2) {
402  put_symbol(&ic, &i_state[64], cb-pcb, 1);
403  put_symbol(&ic, &i_state[96], cr-pcr, 1);
404  }
405  i_len= ic.bytestream - ic.bytestream_start;
406  iscore += (s->lambda2*(get_rac_count(&ic)-base_bits))>>FF_LAMBDA_SHIFT;
407 
408  av_assert1(iscore < 255*255*256 + s->lambda2*10);
409  av_assert1(iscore >= 0);
410  av_assert1(l>=0 && l<=255);
411  av_assert1(pl>=0 && pl<=255);
412 
413  if(level==0){
414  int varc= iscore >> 8;
415  int vard= score >> 8;
416  if (vard <= 64 || vard < varc)
417  c->scene_change_score+= ff_sqrt(vard) - ff_sqrt(varc);
418  else
419  c->scene_change_score+= s->m.qscale;
420  }
421 
422  if(level!=s->block_max_depth){
423  put_rac(&s->c, &s->block_state[4 + s_context], 0);
424  score2 = encode_q_branch(s, level+1, 2*x+0, 2*y+0);
425  score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+0);
426  score2+= encode_q_branch(s, level+1, 2*x+0, 2*y+1);
427  score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+1);
428  score2+= s->lambda2>>FF_LAMBDA_SHIFT; //FIXME exact split overhead
429 
430  if(score2 < score && score2 < iscore)
431  return score2;
432  }
433 
434  if(iscore < score){
435  pred_mv(s, &pmx, &pmy, 0, left, top, tr);
436  memcpy(pbbak, i_buffer, i_len);
437  s->c= ic;
438  s->c.bytestream_start= pbbak_start;
439  s->c.bytestream= pbbak + i_len;
440  set_blocks(s, level, x, y, l, cb, cr, pmx, pmy, 0, BLOCK_INTRA);
441  memcpy(s->block_state, i_state, sizeof(s->block_state));
442  return iscore;
443  }else{
444  memcpy(pbbak, p_buffer, p_len);
445  s->c= pc;
446  s->c.bytestream_start= pbbak_start;
447  s->c.bytestream= pbbak + p_len;
448  set_blocks(s, level, x, y, pl, pcb, pcr, mx, my, best_ref, 0);
449  memcpy(s->block_state, p_state, sizeof(s->block_state));
450  return score;
451  }
452 }
453 
454 static void encode_q_branch2(SnowContext *s, int level, int x, int y){
455  const int w= s->b_width << s->block_max_depth;
456  const int rem_depth= s->block_max_depth - level;
457  const int index= (x + y*w) << rem_depth;
458  int trx= (x+1)<<rem_depth;
459  BlockNode *b= &s->block[index];
460  const BlockNode *left = x ? &s->block[index-1] : &null_block;
461  const BlockNode *top = y ? &s->block[index-w] : &null_block;
462  const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
463  const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
464  int pl = left->color[0];
465  int pcb= left->color[1];
466  int pcr= left->color[2];
467  int pmx, pmy;
468  int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
469  int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 16*!!b->ref;
470  int my_context= av_log2(2*FFABS(left->my - top->my)) + 16*!!b->ref;
471  int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
472 
473  if(s->keyframe){
474  set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
475  return;
476  }
477 
478  if(level!=s->block_max_depth){
479  if(same_block(b,b+1) && same_block(b,b+w) && same_block(b,b+w+1)){
480  put_rac(&s->c, &s->block_state[4 + s_context], 1);
481  }else{
482  put_rac(&s->c, &s->block_state[4 + s_context], 0);
483  encode_q_branch2(s, level+1, 2*x+0, 2*y+0);
484  encode_q_branch2(s, level+1, 2*x+1, 2*y+0);
485  encode_q_branch2(s, level+1, 2*x+0, 2*y+1);
486  encode_q_branch2(s, level+1, 2*x+1, 2*y+1);
487  return;
488  }
489  }
490  if(b->type & BLOCK_INTRA){
491  pred_mv(s, &pmx, &pmy, 0, left, top, tr);
492  put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 1);
493  put_symbol(&s->c, &s->block_state[32], b->color[0]-pl , 1);
494  if (s->nb_planes > 2) {
495  put_symbol(&s->c, &s->block_state[64], b->color[1]-pcb, 1);
496  put_symbol(&s->c, &s->block_state[96], b->color[2]-pcr, 1);
497  }
498  set_blocks(s, level, x, y, b->color[0], b->color[1], b->color[2], pmx, pmy, 0, BLOCK_INTRA);
499  }else{
500  pred_mv(s, &pmx, &pmy, b->ref, left, top, tr);
501  put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 0);
502  if(s->ref_frames > 1)
503  put_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], b->ref, 0);
504  put_symbol(&s->c, &s->block_state[128 + 32*mx_context], b->mx - pmx, 1);
505  put_symbol(&s->c, &s->block_state[128 + 32*my_context], b->my - pmy, 1);
506  set_blocks(s, level, x, y, pl, pcb, pcr, b->mx, b->my, b->ref, 0);
507  }
508 }
509 
510 static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){
511  int i, x2, y2;
512  Plane *p= &s->plane[plane_index];
513  const int block_size = MB_SIZE >> s->block_max_depth;
514  const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
515  const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
516  const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
517  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
518  const int ref_stride= s->current_picture->linesize[plane_index];
519  uint8_t *src= s-> input_picture->data[plane_index];
520  IDWTELEM *dst= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4; //FIXME change to unsigned
521  const int b_stride = s->b_width << s->block_max_depth;
522  const int w= p->width;
523  const int h= p->height;
524  int index= mb_x + mb_y*b_stride;
525  BlockNode *b= &s->block[index];
526  BlockNode backup= *b;
527  int ab=0;
528  int aa=0;
529 
530  av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc stuff above
531 
532  b->type|= BLOCK_INTRA;
533  b->color[plane_index]= 0;
534  memset(dst, 0, obmc_stride*obmc_stride*sizeof(IDWTELEM));
535 
536  for(i=0; i<4; i++){
537  int mb_x2= mb_x + (i &1) - 1;
538  int mb_y2= mb_y + (i>>1) - 1;
539  int x= block_w*mb_x2 + block_w/2;
540  int y= block_h*mb_y2 + block_h/2;
541 
542  add_yblock(s, 0, NULL, dst + (i&1)*block_w + (i>>1)*obmc_stride*block_h, NULL, obmc,
543  x, y, block_w, block_h, w, h, obmc_stride, ref_stride, obmc_stride, mb_x2, mb_y2, 0, 0, plane_index);
544 
545  for(y2= FFMAX(y, 0); y2<FFMIN(h, y+block_h); y2++){
546  for(x2= FFMAX(x, 0); x2<FFMIN(w, x+block_w); x2++){
547  int index= x2-(block_w*mb_x - block_w/2) + (y2-(block_h*mb_y - block_h/2))*obmc_stride;
548  int obmc_v= obmc[index];
549  int d;
550  if(y<0) obmc_v += obmc[index + block_h*obmc_stride];
551  if(x<0) obmc_v += obmc[index + block_w];
552  if(y+block_h>h) obmc_v += obmc[index - block_h*obmc_stride];
553  if(x+block_w>w) obmc_v += obmc[index - block_w];
554  //FIXME precalculate this or simplify it somehow else
555 
556  d = -dst[index] + (1<<(FRAC_BITS-1));
557  dst[index] = d;
558  ab += (src[x2 + y2*ref_stride] - (d>>FRAC_BITS)) * obmc_v;
559  aa += obmc_v * obmc_v; //FIXME precalculate this
560  }
561  }
562  }
563  *b= backup;
564 
565  return av_clip_uint8( ROUNDED_DIV(ab<<LOG2_OBMC_MAX, aa) ); //FIXME we should not need clipping
566 }
567 
568 static inline int get_block_bits(SnowContext *s, int x, int y, int w){
569  const int b_stride = s->b_width << s->block_max_depth;
570  const int b_height = s->b_height<< s->block_max_depth;
571  int index= x + y*b_stride;
572  const BlockNode *b = &s->block[index];
573  const BlockNode *left = x ? &s->block[index-1] : &null_block;
574  const BlockNode *top = y ? &s->block[index-b_stride] : &null_block;
575  const BlockNode *tl = y && x ? &s->block[index-b_stride-1] : left;
576  const BlockNode *tr = y && x+w<b_stride ? &s->block[index-b_stride+w] : tl;
577  int dmx, dmy;
578 // int mx_context= av_log2(2*FFABS(left->mx - top->mx));
579 // int my_context= av_log2(2*FFABS(left->my - top->my));
580 
581  if(x<0 || x>=b_stride || y>=b_height)
582  return 0;
583 /*
584 1 0 0
585 01X 1-2 1
586 001XX 3-6 2-3
587 0001XXX 7-14 4-7
588 00001XXXX 15-30 8-15
589 */
590 //FIXME try accurate rate
591 //FIXME intra and inter predictors if surrounding blocks are not the same type
592  if(b->type & BLOCK_INTRA){
593  return 3+2*( av_log2(2*FFABS(left->color[0] - b->color[0]))
594  + av_log2(2*FFABS(left->color[1] - b->color[1]))
595  + av_log2(2*FFABS(left->color[2] - b->color[2])));
596  }else{
597  pred_mv(s, &dmx, &dmy, b->ref, left, top, tr);
598  dmx-= b->mx;
599  dmy-= b->my;
600  return 2*(1 + av_log2(2*FFABS(dmx)) //FIXME kill the 2* can be merged in lambda
601  + av_log2(2*FFABS(dmy))
602  + av_log2(2*b->ref));
603  }
604 }
605 
606 static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, uint8_t (*obmc_edged)[MB_SIZE * 2]){
607  Plane *p= &s->plane[plane_index];
608  const int block_size = MB_SIZE >> s->block_max_depth;
609  const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
610  const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
611  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
612  const int ref_stride= s->current_picture->linesize[plane_index];
613  uint8_t *dst= s->current_picture->data[plane_index];
614  uint8_t *src= s-> input_picture->data[plane_index];
615  IDWTELEM *pred= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4;
616  uint8_t *cur = s->scratchbuf;
617  uint8_t *tmp = s->emu_edge_buffer;
618  const int b_stride = s->b_width << s->block_max_depth;
619  const int b_height = s->b_height<< s->block_max_depth;
620  const int w= p->width;
621  const int h= p->height;
622  int distortion;
623  int rate= 0;
624  const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
625  int sx= block_w*mb_x - block_w/2;
626  int sy= block_h*mb_y - block_h/2;
627  int x0= FFMAX(0,-sx);
628  int y0= FFMAX(0,-sy);
629  int x1= FFMIN(block_w*2, w-sx);
630  int y1= FFMIN(block_h*2, h-sy);
631  int i,x,y;
632 
633  av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below chckinhg only block_w
634 
635  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);
636 
637  for(y=y0; y<y1; y++){
638  const uint8_t *obmc1= obmc_edged[y];
639  const IDWTELEM *pred1 = pred + y*obmc_stride;
640  uint8_t *cur1 = cur + y*ref_stride;
641  uint8_t *dst1 = dst + sx + (sy+y)*ref_stride;
642  for(x=x0; x<x1; x++){
643 #if FRAC_BITS >= LOG2_OBMC_MAX
644  int v = (cur1[x] * obmc1[x]) << (FRAC_BITS - LOG2_OBMC_MAX);
645 #else
646  int v = (cur1[x] * obmc1[x] + (1<<(LOG2_OBMC_MAX - FRAC_BITS-1))) >> (LOG2_OBMC_MAX - FRAC_BITS);
647 #endif
648  v = (v + pred1[x]) >> FRAC_BITS;
649  if(v&(~255)) v= ~(v>>31);
650  dst1[x] = v;
651  }
652  }
653 
654  /* copy the regions where obmc[] = (uint8_t)256 */
655  if(LOG2_OBMC_MAX == 8
656  && (mb_x == 0 || mb_x == b_stride-1)
657  && (mb_y == 0 || mb_y == b_height-1)){
658  if(mb_x == 0)
659  x1 = block_w;
660  else
661  x0 = block_w;
662  if(mb_y == 0)
663  y1 = block_h;
664  else
665  y0 = block_h;
666  for(y=y0; y<y1; y++)
667  memcpy(dst + sx+x0 + (sy+y)*ref_stride, cur + x0 + y*ref_stride, x1-x0);
668  }
669 
670  if(block_w==16){
671  /* FIXME rearrange dsputil to fit 32x32 cmp functions */
672  /* FIXME check alignment of the cmp wavelet vs the encoding wavelet */
673  /* FIXME cmps overlap but do not cover the wavelet's whole support.
674  * So improving the score of one block is not strictly guaranteed
675  * to improve the score of the whole frame, thus iterative motion
676  * estimation does not always converge. */
677  if(s->avctx->me_cmp == FF_CMP_W97)
678  distortion = ff_w97_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
679  else if(s->avctx->me_cmp == FF_CMP_W53)
680  distortion = ff_w53_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
681  else{
682  distortion = 0;
683  for(i=0; i<4; i++){
684  int off = sx+16*(i&1) + (sy+16*(i>>1))*ref_stride;
685  distortion += s->mecc.me_cmp[0](&s->m, src + off, dst + off, ref_stride, 16);
686  }
687  }
688  }else{
689  av_assert2(block_w==8);
690  distortion = s->mecc.me_cmp[0](&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, block_w*2);
691  }
692 
693  if(plane_index==0){
694  for(i=0; i<4; i++){
695 /* ..RRr
696  * .RXx.
697  * rxx..
698  */
699  rate += get_block_bits(s, mb_x + (i&1) - (i>>1), mb_y + (i>>1), 1);
700  }
701  if(mb_x == b_stride-2)
702  rate += get_block_bits(s, mb_x + 1, mb_y + 1, 1);
703  }
704  return distortion + rate*penalty_factor;
705 }
706 
707 static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){
708  int i, y2;
709  Plane *p= &s->plane[plane_index];
710  const int block_size = MB_SIZE >> s->block_max_depth;
711  const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
712  const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
713  const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
714  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
715  const int ref_stride= s->current_picture->linesize[plane_index];
716  uint8_t *dst= s->current_picture->data[plane_index];
717  uint8_t *src= s-> input_picture->data[plane_index];
718  //FIXME zero_dst is const but add_yblock changes dst if add is 0 (this is never the case for dst=zero_dst
719  // const has only been removed from zero_dst to suppress a warning
720  static IDWTELEM zero_dst[4096]; //FIXME
721  const int b_stride = s->b_width << s->block_max_depth;
722  const int w= p->width;
723  const int h= p->height;
724  int distortion= 0;
725  int rate= 0;
726  const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
727 
728  av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below
729 
730  for(i=0; i<9; i++){
731  int mb_x2= mb_x + (i%3) - 1;
732  int mb_y2= mb_y + (i/3) - 1;
733  int x= block_w*mb_x2 + block_w/2;
734  int y= block_h*mb_y2 + block_h/2;
735 
736  add_yblock(s, 0, NULL, zero_dst, dst, obmc,
737  x, y, block_w, block_h, w, h, /*dst_stride*/0, ref_stride, obmc_stride, mb_x2, mb_y2, 1, 1, plane_index);
738 
739  //FIXME find a cleaner/simpler way to skip the outside stuff
740  for(y2= y; y2<0; y2++)
741  memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
742  for(y2= h; y2<y+block_h; y2++)
743  memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
744  if(x<0){
745  for(y2= y; y2<y+block_h; y2++)
746  memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, -x);
747  }
748  if(x+block_w > w){
749  for(y2= y; y2<y+block_h; y2++)
750  memcpy(dst + w + y2*ref_stride, src + w + y2*ref_stride, x+block_w - w);
751  }
752 
753  av_assert1(block_w== 8 || block_w==16);
754  distortion += s->mecc.me_cmp[block_w==8](&s->m, src + x + y*ref_stride, dst + x + y*ref_stride, ref_stride, block_h);
755  }
756 
757  if(plane_index==0){
758  BlockNode *b= &s->block[mb_x+mb_y*b_stride];
759  int merged= same_block(b,b+1) && same_block(b,b+b_stride) && same_block(b,b+b_stride+1);
760 
761 /* ..RRRr
762  * .RXXx.
763  * .RXXx.
764  * rxxx.
765  */
766  if(merged)
767  rate = get_block_bits(s, mb_x, mb_y, 2);
768  for(i=merged?4:0; i<9; i++){
769  static const int dxy[9][2] = {{0,0},{1,0},{0,1},{1,1},{2,0},{2,1},{-1,2},{0,2},{1,2}};
770  rate += get_block_bits(s, mb_x + dxy[i][0], mb_y + dxy[i][1], 1);
771  }
772  }
773  return distortion + rate*penalty_factor;
774 }
775 
776 static int encode_subband_c0run(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
777  const int w= b->width;
778  const int h= b->height;
779  int x, y;
780 
781  if(1){
782  int run=0;
783  int *runs = s->run_buffer;
784  int run_index=0;
785  int max_index;
786 
787  for(y=0; y<h; y++){
788  for(x=0; x<w; x++){
789  int v, p=0;
790  int /*ll=0, */l=0, lt=0, t=0, rt=0;
791  v= src[x + y*stride];
792 
793  if(y){
794  t= src[x + (y-1)*stride];
795  if(x){
796  lt= src[x - 1 + (y-1)*stride];
797  }
798  if(x + 1 < w){
799  rt= src[x + 1 + (y-1)*stride];
800  }
801  }
802  if(x){
803  l= src[x - 1 + y*stride];
804  /*if(x > 1){
805  if(orientation==1) ll= src[y + (x-2)*stride];
806  else ll= src[x - 2 + y*stride];
807  }*/
808  }
809  if(parent){
810  int px= x>>1;
811  int py= y>>1;
812  if(px<b->parent->width && py<b->parent->height)
813  p= parent[px + py*2*stride];
814  }
815  if(!(/*ll|*/l|lt|t|rt|p)){
816  if(v){
817  runs[run_index++]= run;
818  run=0;
819  }else{
820  run++;
821  }
822  }
823  }
824  }
825  max_index= run_index;
826  runs[run_index++]= run;
827  run_index=0;
828  run= runs[run_index++];
829 
830  put_symbol2(&s->c, b->state[30], max_index, 0);
831  if(run_index <= max_index)
832  put_symbol2(&s->c, b->state[1], run, 3);
833 
834  for(y=0; y<h; y++){
835  if(s->c.bytestream_end - s->c.bytestream < w*40){
836  av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
837  return AVERROR(ENOMEM);
838  }
839  for(x=0; x<w; x++){
840  int v, p=0;
841  int /*ll=0, */l=0, lt=0, t=0, rt=0;
842  v= src[x + y*stride];
843 
844  if(y){
845  t= src[x + (y-1)*stride];
846  if(x){
847  lt= src[x - 1 + (y-1)*stride];
848  }
849  if(x + 1 < w){
850  rt= src[x + 1 + (y-1)*stride];
851  }
852  }
853  if(x){
854  l= src[x - 1 + y*stride];
855  /*if(x > 1){
856  if(orientation==1) ll= src[y + (x-2)*stride];
857  else ll= src[x - 2 + y*stride];
858  }*/
859  }
860  if(parent){
861  int px= x>>1;
862  int py= y>>1;
863  if(px<b->parent->width && py<b->parent->height)
864  p= parent[px + py*2*stride];
865  }
866  if(/*ll|*/l|lt|t|rt|p){
867  int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
868 
869  put_rac(&s->c, &b->state[0][context], !!v);
870  }else{
871  if(!run){
872  run= runs[run_index++];
873 
874  if(run_index <= max_index)
875  put_symbol2(&s->c, b->state[1], run, 3);
876  av_assert2(v);
877  }else{
878  run--;
879  av_assert2(!v);
880  }
881  }
882  if(v){
883  int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
884  int l2= 2*FFABS(l) + (l<0);
885  int t2= 2*FFABS(t) + (t<0);
886 
887  put_symbol2(&s->c, b->state[context + 2], FFABS(v)-1, context-4);
888  put_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l2&0xFF] + 3*ff_quant3bA[t2&0xFF]], v<0);
889  }
890  }
891  }
892  }
893  return 0;
894 }
895 
896 static int encode_subband(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
897 // encode_subband_qtree(s, b, src, parent, stride, orientation);
898 // encode_subband_z0run(s, b, src, parent, stride, orientation);
899  return encode_subband_c0run(s, b, src, parent, stride, orientation);
900 // encode_subband_dzr(s, b, src, parent, stride, orientation);
901 }
902 
903 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){
904  const int b_stride= s->b_width << s->block_max_depth;
905  BlockNode *block= &s->block[mb_x + mb_y * b_stride];
906  BlockNode backup= *block;
907  unsigned value;
908  int rd, index;
909 
910  av_assert2(mb_x>=0 && mb_y>=0);
911  av_assert2(mb_x<b_stride);
912 
913  if(intra){
914  block->color[0] = p[0];
915  block->color[1] = p[1];
916  block->color[2] = p[2];
917  block->type |= BLOCK_INTRA;
918  }else{
919  index= (p[0] + 31*p[1]) & (ME_CACHE_SIZE-1);
920  value= s->me_cache_generation + (p[0]>>10) + (p[1]<<6) + (block->ref<<12);
921  if(s->me_cache[index] == value)
922  return 0;
923  s->me_cache[index]= value;
924 
925  block->mx= p[0];
926  block->my= p[1];
927  block->type &= ~BLOCK_INTRA;
928  }
929 
930  rd= get_block_rd(s, mb_x, mb_y, 0, obmc_edged) + s->intra_penalty * !!intra;
931 
932 //FIXME chroma
933  if(rd < *best_rd){
934  *best_rd= rd;
935  return 1;
936  }else{
937  *block= backup;
938  return 0;
939  }
940 }
941 
942 /* special case for int[2] args we discard afterwards,
943  * fixes compilation problem with gcc 2.95 */
944 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){
945  int p[2] = {p0, p1};
946  return check_block(s, mb_x, mb_y, p, 0, obmc_edged, best_rd);
947 }
948 
949 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){
950  const int b_stride= s->b_width << s->block_max_depth;
951  BlockNode *block= &s->block[mb_x + mb_y * b_stride];
952  BlockNode backup[4];
953  unsigned value;
954  int rd, index;
955 
956  /* We don't initialize backup[] during variable declaration, because
957  * that fails to compile on MSVC: "cannot convert from 'BlockNode' to
958  * 'int16_t'". */
959  backup[0] = block[0];
960  backup[1] = block[1];
961  backup[2] = block[b_stride];
962  backup[3] = block[b_stride + 1];
963 
964  av_assert2(mb_x>=0 && mb_y>=0);
965  av_assert2(mb_x<b_stride);
966  av_assert2(((mb_x|mb_y)&1) == 0);
967 
968  index= (p0 + 31*p1) & (ME_CACHE_SIZE-1);
969  value= s->me_cache_generation + (p0>>10) + (p1<<6) + (block->ref<<12);
970  if(s->me_cache[index] == value)
971  return 0;
972  s->me_cache[index]= value;
973 
974  block->mx= p0;
975  block->my= p1;
976  block->ref= ref;
977  block->type &= ~BLOCK_INTRA;
978  block[1]= block[b_stride]= block[b_stride+1]= *block;
979 
980  rd= get_4block_rd(s, mb_x, mb_y, 0);
981 
982 //FIXME chroma
983  if(rd < *best_rd){
984  *best_rd= rd;
985  return 1;
986  }else{
987  block[0]= backup[0];
988  block[1]= backup[1];
989  block[b_stride]= backup[2];
990  block[b_stride+1]= backup[3];
991  return 0;
992  }
993 }
994 
995 static void iterative_me(SnowContext *s){
996  int pass, mb_x, mb_y;
997  const int b_width = s->b_width << s->block_max_depth;
998  const int b_height= s->b_height << s->block_max_depth;
999  const int b_stride= b_width;
1000  int color[3];
1001 
1002  {
1003  RangeCoder r = s->c;
1004  uint8_t state[sizeof(s->block_state)];
1005  memcpy(state, s->block_state, sizeof(s->block_state));
1006  for(mb_y= 0; mb_y<s->b_height; mb_y++)
1007  for(mb_x= 0; mb_x<s->b_width; mb_x++)
1008  encode_q_branch(s, 0, mb_x, mb_y);
1009  s->c = r;
1010  memcpy(s->block_state, state, sizeof(s->block_state));
1011  }
1012 
1013  for(pass=0; pass<25; pass++){
1014  int change= 0;
1015 
1016  for(mb_y= 0; mb_y<b_height; mb_y++){
1017  for(mb_x= 0; mb_x<b_width; mb_x++){
1018  int dia_change, i, j, ref;
1019  int best_rd= INT_MAX, ref_rd;
1020  BlockNode backup, ref_b;
1021  const int index= mb_x + mb_y * b_stride;
1022  BlockNode *block= &s->block[index];
1023  BlockNode *tb = mb_y ? &s->block[index-b_stride ] : NULL;
1024  BlockNode *lb = mb_x ? &s->block[index -1] : NULL;
1025  BlockNode *rb = mb_x+1<b_width ? &s->block[index +1] : NULL;
1026  BlockNode *bb = mb_y+1<b_height ? &s->block[index+b_stride ] : NULL;
1027  BlockNode *tlb= mb_x && mb_y ? &s->block[index-b_stride-1] : NULL;
1028  BlockNode *trb= mb_x+1<b_width && mb_y ? &s->block[index-b_stride+1] : NULL;
1029  BlockNode *blb= mb_x && mb_y+1<b_height ? &s->block[index+b_stride-1] : NULL;
1030  BlockNode *brb= mb_x+1<b_width && mb_y+1<b_height ? &s->block[index+b_stride+1] : NULL;
1031  const int b_w= (MB_SIZE >> s->block_max_depth);
1032  uint8_t obmc_edged[MB_SIZE * 2][MB_SIZE * 2];
1033 
1034  if(pass && (block->type & BLOCK_OPT))
1035  continue;
1036  block->type |= BLOCK_OPT;
1037 
1038  backup= *block;
1039 
1040  if(!s->me_cache_generation)
1041  memset(s->me_cache, 0, sizeof(s->me_cache));
1042  s->me_cache_generation += 1<<22;
1043 
1044  //FIXME precalculate
1045  {
1046  int x, y;
1047  for (y = 0; y < b_w * 2; y++)
1048  memcpy(obmc_edged[y], ff_obmc_tab[s->block_max_depth] + y * b_w * 2, b_w * 2);
1049  if(mb_x==0)
1050  for(y=0; y<b_w*2; y++)
1051  memset(obmc_edged[y], obmc_edged[y][0] + obmc_edged[y][b_w-1], b_w);
1052  if(mb_x==b_stride-1)
1053  for(y=0; y<b_w*2; y++)
1054  memset(obmc_edged[y]+b_w, obmc_edged[y][b_w] + obmc_edged[y][b_w*2-1], b_w);
1055  if(mb_y==0){
1056  for(x=0; x<b_w*2; x++)
1057  obmc_edged[0][x] += obmc_edged[b_w-1][x];
1058  for(y=1; y<b_w; y++)
1059  memcpy(obmc_edged[y], obmc_edged[0], b_w*2);
1060  }
1061  if(mb_y==b_height-1){
1062  for(x=0; x<b_w*2; x++)
1063  obmc_edged[b_w*2-1][x] += obmc_edged[b_w][x];
1064  for(y=b_w; y<b_w*2-1; y++)
1065  memcpy(obmc_edged[y], obmc_edged[b_w*2-1], b_w*2);
1066  }
1067  }
1068 
1069  //skip stuff outside the picture
1070  if(mb_x==0 || mb_y==0 || mb_x==b_width-1 || mb_y==b_height-1){
1071  uint8_t *src= s-> input_picture->data[0];
1072  uint8_t *dst= s->current_picture->data[0];
1073  const int stride= s->current_picture->linesize[0];
1074  const int block_w= MB_SIZE >> s->block_max_depth;
1075  const int block_h= MB_SIZE >> s->block_max_depth;
1076  const int sx= block_w*mb_x - block_w/2;
1077  const int sy= block_h*mb_y - block_h/2;
1078  const int w= s->plane[0].width;
1079  const int h= s->plane[0].height;
1080  int y;
1081 
1082  for(y=sy; y<0; y++)
1083  memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1084  for(y=h; y<sy+block_h*2; y++)
1085  memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1086  if(sx<0){
1087  for(y=sy; y<sy+block_h*2; y++)
1088  memcpy(dst + sx + y*stride, src + sx + y*stride, -sx);
1089  }
1090  if(sx+block_w*2 > w){
1091  for(y=sy; y<sy+block_h*2; y++)
1092  memcpy(dst + w + y*stride, src + w + y*stride, sx+block_w*2 - w);
1093  }
1094  }
1095 
1096  // intra(black) = neighbors' contribution to the current block
1097  for(i=0; i < s->nb_planes; i++)
1098  color[i]= get_dc(s, mb_x, mb_y, i);
1099 
1100  // get previous score (cannot be cached due to OBMC)
1101  if(pass > 0 && (block->type&BLOCK_INTRA)){
1102  int color0[3]= {block->color[0], block->color[1], block->color[2]};
1103  check_block(s, mb_x, mb_y, color0, 1, obmc_edged, &best_rd);
1104  }else
1105  check_block_inter(s, mb_x, mb_y, block->mx, block->my, obmc_edged, &best_rd);
1106 
1107  ref_b= *block;
1108  ref_rd= best_rd;
1109  for(ref=0; ref < s->ref_frames; ref++){
1110  int16_t (*mvr)[2]= &s->ref_mvs[ref][index];
1111  if(s->ref_scores[ref][index] > s->ref_scores[ref_b.ref][index]*3/2) //FIXME tune threshold
1112  continue;
1113  block->ref= ref;
1114  best_rd= INT_MAX;
1115 
1116  check_block_inter(s, mb_x, mb_y, mvr[0][0], mvr[0][1], obmc_edged, &best_rd);
1117  check_block_inter(s, mb_x, mb_y, 0, 0, obmc_edged, &best_rd);
1118  if(tb)
1119  check_block_inter(s, mb_x, mb_y, mvr[-b_stride][0], mvr[-b_stride][1], obmc_edged, &best_rd);
1120  if(lb)
1121  check_block_inter(s, mb_x, mb_y, mvr[-1][0], mvr[-1][1], obmc_edged, &best_rd);
1122  if(rb)
1123  check_block_inter(s, mb_x, mb_y, mvr[1][0], mvr[1][1], obmc_edged, &best_rd);
1124  if(bb)
1125  check_block_inter(s, mb_x, mb_y, mvr[b_stride][0], mvr[b_stride][1], obmc_edged, &best_rd);
1126 
1127  /* fullpel ME */
1128  //FIXME avoid subpel interpolation / round to nearest integer
1129  do{
1130  int newx = block->mx;
1131  int newy = block->my;
1132  int dia_size = s->iterative_dia_size ? s->iterative_dia_size : FFMAX(s->avctx->dia_size, 1);
1133  dia_change=0;
1134  for(i=0; i < dia_size; i++){
1135  for(j=0; j<i; j++){
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*(i-j), newy-(4*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  dia_change |= check_block_inter(s, mb_x, mb_y, newx+(4*j), newy-4*(i-j), obmc_edged, &best_rd);
1140  }
1141  }
1142  }while(dia_change);
1143  /* subpel ME */
1144  do{
1145  static const int square[8][2]= {{+1, 0},{-1, 0},{ 0,+1},{ 0,-1},{+1,+1},{-1,-1},{+1,-1},{-1,+1},};
1146  dia_change=0;
1147  for(i=0; i<8; i++)
1148  dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+square[i][0], block->my+square[i][1], obmc_edged, &best_rd);
1149  }while(dia_change);
1150  //FIXME or try the standard 2 pass qpel or similar
1151 
1152  mvr[0][0]= block->mx;
1153  mvr[0][1]= block->my;
1154  if(ref_rd > best_rd){
1155  ref_rd= best_rd;
1156  ref_b= *block;
1157  }
1158  }
1159  best_rd= ref_rd;
1160  *block= ref_b;
1161  check_block(s, mb_x, mb_y, color, 1, obmc_edged, &best_rd);
1162  //FIXME RD style color selection
1163  if(!same_block(block, &backup)){
1164  if(tb ) tb ->type &= ~BLOCK_OPT;
1165  if(lb ) lb ->type &= ~BLOCK_OPT;
1166  if(rb ) rb ->type &= ~BLOCK_OPT;
1167  if(bb ) bb ->type &= ~BLOCK_OPT;
1168  if(tlb) tlb->type &= ~BLOCK_OPT;
1169  if(trb) trb->type &= ~BLOCK_OPT;
1170  if(blb) blb->type &= ~BLOCK_OPT;
1171  if(brb) brb->type &= ~BLOCK_OPT;
1172  change ++;
1173  }
1174  }
1175  }
1176  av_log(s->avctx, AV_LOG_DEBUG, "pass:%d changed:%d\n", pass, change);
1177  if(!change)
1178  break;
1179  }
1180 
1181  if(s->block_max_depth == 1){
1182  int change= 0;
1183  for(mb_y= 0; mb_y<b_height; mb_y+=2){
1184  for(mb_x= 0; mb_x<b_width; mb_x+=2){
1185  int i;
1186  int best_rd, init_rd;
1187  const int index= mb_x + mb_y * b_stride;
1188  BlockNode *b[4];
1189 
1190  b[0]= &s->block[index];
1191  b[1]= b[0]+1;
1192  b[2]= b[0]+b_stride;
1193  b[3]= b[2]+1;
1194  if(same_block(b[0], b[1]) &&
1195  same_block(b[0], b[2]) &&
1196  same_block(b[0], b[3]))
1197  continue;
1198 
1199  if(!s->me_cache_generation)
1200  memset(s->me_cache, 0, sizeof(s->me_cache));
1201  s->me_cache_generation += 1<<22;
1202 
1203  init_rd= best_rd= get_4block_rd(s, mb_x, mb_y, 0);
1204 
1205  //FIXME more multiref search?
1206  check_4block_inter(s, mb_x, mb_y,
1207  (b[0]->mx + b[1]->mx + b[2]->mx + b[3]->mx + 2) >> 2,
1208  (b[0]->my + b[1]->my + b[2]->my + b[3]->my + 2) >> 2, 0, &best_rd);
1209 
1210  for(i=0; i<4; i++)
1211  if(!(b[i]->type&BLOCK_INTRA))
1212  check_4block_inter(s, mb_x, mb_y, b[i]->mx, b[i]->my, b[i]->ref, &best_rd);
1213 
1214  if(init_rd != best_rd)
1215  change++;
1216  }
1217  }
1218  av_log(s->avctx, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4);
1219  }
1220 }
1221 
1222 static void encode_blocks(SnowContext *s, int search){
1223  int x, y;
1224  int w= s->b_width;
1225  int h= s->b_height;
1226 
1227  if(s->motion_est == FF_ME_ITER && !s->keyframe && search)
1228  iterative_me(s);
1229 
1230  for(y=0; y<h; y++){
1231  if(s->c.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit
1232  av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
1233  return;
1234  }
1235  for(x=0; x<w; x++){
1236  if(s->motion_est == FF_ME_ITER || !search)
1237  encode_q_branch2(s, 0, x, y);
1238  else
1239  encode_q_branch (s, 0, x, y);
1240  }
1241  }
1242 }
1243 
1244 static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias){
1245  const int w= b->width;
1246  const int h= b->height;
1247  const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1248  const int qmul= ff_qexp[qlog&(QROOT-1)]<<((qlog>>QSHIFT) + ENCODER_EXTRA_BITS);
1249  int x,y, thres1, thres2;
1250 
1251  if(s->qlog == LOSSLESS_QLOG){
1252  for(y=0; y<h; y++)
1253  for(x=0; x<w; x++)
1254  dst[x + y*stride]= src[x + y*stride];
1255  return;
1256  }
1257 
1258  bias= bias ? 0 : (3*qmul)>>3;
1259  thres1= ((qmul - bias)>>QEXPSHIFT) - 1;
1260  thres2= 2*thres1;
1261 
1262  if(!bias){
1263  for(y=0; y<h; y++){
1264  for(x=0; x<w; x++){
1265  int i= src[x + y*stride];
1266 
1267  if((unsigned)(i+thres1) > thres2){
1268  if(i>=0){
1269  i<<= QEXPSHIFT;
1270  i/= qmul; //FIXME optimize
1271  dst[x + y*stride]= i;
1272  }else{
1273  i= -i;
1274  i<<= QEXPSHIFT;
1275  i/= qmul; //FIXME optimize
1276  dst[x + y*stride]= -i;
1277  }
1278  }else
1279  dst[x + y*stride]= 0;
1280  }
1281  }
1282  }else{
1283  for(y=0; y<h; y++){
1284  for(x=0; x<w; x++){
1285  int i= src[x + y*stride];
1286 
1287  if((unsigned)(i+thres1) > thres2){
1288  if(i>=0){
1289  i<<= QEXPSHIFT;
1290  i= (i + bias) / qmul; //FIXME optimize
1291  dst[x + y*stride]= i;
1292  }else{
1293  i= -i;
1294  i<<= QEXPSHIFT;
1295  i= (i + bias) / qmul; //FIXME optimize
1296  dst[x + y*stride]= -i;
1297  }
1298  }else
1299  dst[x + y*stride]= 0;
1300  }
1301  }
1302  }
1303 }
1304 
1305 static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride){
1306  const int w= b->width;
1307  const int h= b->height;
1308  const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1309  const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1310  const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
1311  int x,y;
1312 
1313  if(s->qlog == LOSSLESS_QLOG) return;
1314 
1315  for(y=0; y<h; y++){
1316  for(x=0; x<w; x++){
1317  int i= src[x + y*stride];
1318  if(i<0){
1319  src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias
1320  }else if(i>0){
1321  src[x + y*stride]= (( i*qmul + qadd)>>(QEXPSHIFT));
1322  }
1323  }
1324  }
1325 }
1326 
1327 static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1328  const int w= b->width;
1329  const int h= b->height;
1330  int x,y;
1331 
1332  for(y=h-1; y>=0; y--){
1333  for(x=w-1; x>=0; x--){
1334  int i= x + y*stride;
1335 
1336  if(x){
1337  if(use_median){
1338  if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1339  else src[i] -= src[i - 1];
1340  }else{
1341  if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1342  else src[i] -= src[i - 1];
1343  }
1344  }else{
1345  if(y) src[i] -= src[i - stride];
1346  }
1347  }
1348  }
1349 }
1350 
1351 static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1352  const int w= b->width;
1353  const int h= b->height;
1354  int x,y;
1355 
1356  for(y=0; y<h; y++){
1357  for(x=0; x<w; x++){
1358  int i= x + y*stride;
1359 
1360  if(x){
1361  if(use_median){
1362  if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1363  else src[i] += src[i - 1];
1364  }else{
1365  if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1366  else src[i] += src[i - 1];
1367  }
1368  }else{
1369  if(y) src[i] += src[i - stride];
1370  }
1371  }
1372  }
1373 }
1374 
1375 static void encode_qlogs(SnowContext *s){
1376  int plane_index, level, orientation;
1377 
1378  for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1379  for(level=0; level<s->spatial_decomposition_count; level++){
1380  for(orientation=level ? 1:0; orientation<4; orientation++){
1381  if(orientation==2) continue;
1382  put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1);
1383  }
1384  }
1385  }
1386 }
1387 
1388 static void encode_header(SnowContext *s){
1389  int plane_index, i;
1390  uint8_t kstate[32];
1391 
1392  memset(kstate, MID_STATE, sizeof(kstate));
1393 
1394  put_rac(&s->c, kstate, s->keyframe);
1395  if(s->keyframe || s->always_reset){
1396  ff_snow_reset_contexts(s);
1397  s->last_spatial_decomposition_type=
1398  s->last_qlog=
1399  s->last_qbias=
1400  s->last_mv_scale=
1401  s->last_block_max_depth= 0;
1402  for(plane_index=0; plane_index<2; plane_index++){
1403  Plane *p= &s->plane[plane_index];
1404  p->last_htaps=0;
1405  p->last_diag_mc=0;
1406  memset(p->last_hcoeff, 0, sizeof(p->last_hcoeff));
1407  }
1408  }
1409  if(s->keyframe){
1410  put_symbol(&s->c, s->header_state, s->version, 0);
1411  put_rac(&s->c, s->header_state, s->always_reset);
1412  put_symbol(&s->c, s->header_state, s->temporal_decomposition_type, 0);
1413  put_symbol(&s->c, s->header_state, s->temporal_decomposition_count, 0);
1414  put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
1415  put_symbol(&s->c, s->header_state, s->colorspace_type, 0);
1416  if (s->nb_planes > 2) {
1417  put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0);
1418  put_symbol(&s->c, s->header_state, s->chroma_v_shift, 0);
1419  }
1420  put_rac(&s->c, s->header_state, s->spatial_scalability);
1421 // put_rac(&s->c, s->header_state, s->rate_scalability);
1422  put_symbol(&s->c, s->header_state, s->max_ref_frames-1, 0);
1423 
1424  encode_qlogs(s);
1425  }
1426 
1427  if(!s->keyframe){
1428  int update_mc=0;
1429  for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1430  Plane *p= &s->plane[plane_index];
1431  update_mc |= p->last_htaps != p->htaps;
1432  update_mc |= p->last_diag_mc != p->diag_mc;
1433  update_mc |= !!memcmp(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1434  }
1435  put_rac(&s->c, s->header_state, update_mc);
1436  if(update_mc){
1437  for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1438  Plane *p= &s->plane[plane_index];
1439  put_rac(&s->c, s->header_state, p->diag_mc);
1440  put_symbol(&s->c, s->header_state, p->htaps/2-1, 0);
1441  for(i= p->htaps/2; i; i--)
1442  put_symbol(&s->c, s->header_state, FFABS(p->hcoeff[i]), 0);
1443  }
1444  }
1445  if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
1446  put_rac(&s->c, s->header_state, 1);
1447  put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
1448  encode_qlogs(s);
1449  }else
1450  put_rac(&s->c, s->header_state, 0);
1451  }
1452 
1453  put_symbol(&s->c, s->header_state, s->spatial_decomposition_type - s->last_spatial_decomposition_type, 1);
1454  put_symbol(&s->c, s->header_state, s->qlog - s->last_qlog , 1);
1455  put_symbol(&s->c, s->header_state, s->mv_scale - s->last_mv_scale, 1);
1456  put_symbol(&s->c, s->header_state, s->qbias - s->last_qbias , 1);
1457  put_symbol(&s->c, s->header_state, s->block_max_depth - s->last_block_max_depth, 1);
1458 
1459 }
1460 
1461 static void update_last_header_values(SnowContext *s){
1462  int plane_index;
1463 
1464  if(!s->keyframe){
1465  for(plane_index=0; plane_index<2; plane_index++){
1466  Plane *p= &s->plane[plane_index];
1467  p->last_diag_mc= p->diag_mc;
1468  p->last_htaps = p->htaps;
1469  memcpy(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1470  }
1471  }
1472 
1473  s->last_spatial_decomposition_type = s->spatial_decomposition_type;
1474  s->last_qlog = s->qlog;
1475  s->last_qbias = s->qbias;
1476  s->last_mv_scale = s->mv_scale;
1477  s->last_block_max_depth = s->block_max_depth;
1478  s->last_spatial_decomposition_count = s->spatial_decomposition_count;
1479 }
1480 
1481 static int qscale2qlog(int qscale){
1482  return lrint(QROOT*log2(qscale / (float)FF_QP2LAMBDA))
1483  + 61*QROOT/8; ///< 64 > 60
1484 }
1485 
1486 static int ratecontrol_1pass(SnowContext *s, AVFrame *pict)
1487 {
1488  /* Estimate the frame's complexity as a sum of weighted dwt coefficients.
1489  * FIXME we know exact mv bits at this point,
1490  * but ratecontrol isn't set up to include them. */
1491  uint32_t coef_sum= 0;
1492  int level, orientation, delta_qlog;
1493 
1494  for(level=0; level<s->spatial_decomposition_count; level++){
1495  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1496  SubBand *b= &s->plane[0].band[level][orientation];
1497  IDWTELEM *buf= b->ibuf;
1498  const int w= b->width;
1499  const int h= b->height;
1500  const int stride= b->stride;
1501  const int qlog= av_clip(2*QROOT + b->qlog, 0, QROOT*16);
1502  const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1503  const int qdiv= (1<<16)/qmul;
1504  int x, y;
1505  //FIXME this is ugly
1506  for(y=0; y<h; y++)
1507  for(x=0; x<w; x++)
1508  buf[x+y*stride]= b->buf[x+y*stride];
1509  if(orientation==0)
1510  decorrelate(s, b, buf, stride, 1, 0);
1511  for(y=0; y<h; y++)
1512  for(x=0; x<w; x++)
1513  coef_sum+= abs(buf[x+y*stride]) * qdiv >> 16;
1514  }
1515  }
1516 
1517  /* ugly, ratecontrol just takes a sqrt again */
1518  av_assert0(coef_sum < INT_MAX);
1519  coef_sum = (uint64_t)coef_sum * coef_sum >> 16;
1520 
1521  if(pict->pict_type == AV_PICTURE_TYPE_I){
1522  s->m.current_picture.mb_var_sum= coef_sum;
1523  s->m.current_picture.mc_mb_var_sum= 0;
1524  }else{
1525  s->m.current_picture.mc_mb_var_sum= coef_sum;
1526  s->m.current_picture.mb_var_sum= 0;
1527  }
1528 
1529  pict->quality= ff_rate_estimate_qscale(&s->m, 1);
1530  if (pict->quality < 0)
1531  return INT_MIN;
1532  s->lambda= pict->quality * 3/2;
1533  delta_qlog= qscale2qlog(pict->quality) - s->qlog;
1534  s->qlog+= delta_qlog;
1535  return delta_qlog;
1536 }
1537 
1538 static void calculate_visual_weight(SnowContext *s, Plane *p){
1539  int width = p->width;
1540  int height= p->height;
1541  int level, orientation, x, y;
1542 
1543  for(level=0; level<s->spatial_decomposition_count; level++){
1544  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1545  SubBand *b= &p->band[level][orientation];
1546  IDWTELEM *ibuf= b->ibuf;
1547  int64_t error=0;
1548 
1549  memset(s->spatial_idwt_buffer, 0, sizeof(*s->spatial_idwt_buffer)*width*height);
1550  ibuf[b->width/2 + b->height/2*b->stride]= 256*16;
1551  ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, width, height, width, s->spatial_decomposition_type, s->spatial_decomposition_count);
1552  for(y=0; y<height; y++){
1553  for(x=0; x<width; x++){
1554  int64_t d= s->spatial_idwt_buffer[x + y*width]*16;
1555  error += d*d;
1556  }
1557  }
1558 
1559  b->qlog= (int)(QROOT * log2(352256.0/sqrt(error)) + 0.5);
1560  }
1561  }
1562 }
1563 
1564 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
1565  const AVFrame *pict, int *got_packet)
1566 {
1567  SnowContext *s = avctx->priv_data;
1568  RangeCoder * const c= &s->c;
1569  AVFrame *pic;
1570  const int width= s->avctx->width;
1571  const int height= s->avctx->height;
1572  int level, orientation, plane_index, i, y, ret;
1573  uint8_t rc_header_bak[sizeof(s->header_state)];
1574  uint8_t rc_block_bak[sizeof(s->block_state)];
1575 
1576  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)
1577  return ret;
1578 
1579  ff_init_range_encoder(c, pkt->data, pkt->size);
1580  ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1581 
1582  for(i=0; i < s->nb_planes; i++){
1583  int hshift= i ? s->chroma_h_shift : 0;
1584  int vshift= i ? s->chroma_v_shift : 0;
1585  for(y=0; y<AV_CEIL_RSHIFT(height, vshift); y++)
1586  memcpy(&s->input_picture->data[i][y * s->input_picture->linesize[i]],
1587  &pict->data[i][y * pict->linesize[i]],
1588  AV_CEIL_RSHIFT(width, hshift));
1589  s->mpvencdsp.draw_edges(s->input_picture->data[i], s->input_picture->linesize[i],
1590  AV_CEIL_RSHIFT(width, hshift), AV_CEIL_RSHIFT(height, vshift),
1591  EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
1592  EDGE_TOP | EDGE_BOTTOM);
1593 
1594  }
1595  emms_c();
1596  pic = s->input_picture;
1597  pic->pict_type = pict->pict_type;
1598  pic->quality = pict->quality;
1599 
1600  s->m.picture_number= avctx->frame_number;
1601  if(avctx->flags&AV_CODEC_FLAG_PASS2){
1602  s->m.pict_type = pic->pict_type = s->m.rc_context.entry[avctx->frame_number].new_pict_type;
1603  s->keyframe = pic->pict_type == AV_PICTURE_TYPE_I;
1604  if(!(avctx->flags&AV_CODEC_FLAG_QSCALE)) {
1605  pic->quality = ff_rate_estimate_qscale(&s->m, 0);
1606  if (pic->quality < 0)
1607  return -1;
1608  }
1609  }else{
1610  s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
1611  s->m.pict_type = pic->pict_type = s->keyframe ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P;
1612  }
1613 
1614  if(s->pass1_rc && avctx->frame_number == 0)
1615  pic->quality = 2*FF_QP2LAMBDA;
1616  if (pic->quality) {
1617  s->qlog = qscale2qlog(pic->quality);
1618  s->lambda = pic->quality * 3/2;
1619  }
1620  if (s->qlog < 0 || (!pic->quality && (avctx->flags & AV_CODEC_FLAG_QSCALE))) {
1621  s->qlog= LOSSLESS_QLOG;
1622  s->lambda = 0;
1623  }//else keep previous frame's qlog until after motion estimation
1624 
1625  if (s->current_picture->data[0]
1626 #if FF_API_EMU_EDGE
1627  && !(s->avctx->flags&CODEC_FLAG_EMU_EDGE)
1628 #endif
1629  ) {
1630  int w = s->avctx->width;
1631  int h = s->avctx->height;
1632 
1633  s->mpvencdsp.draw_edges(s->current_picture->data[0],
1634  s->current_picture->linesize[0], w , h ,
1635  EDGE_WIDTH , EDGE_WIDTH , EDGE_TOP | EDGE_BOTTOM);
1636  if (s->current_picture->data[2]) {
1637  s->mpvencdsp.draw_edges(s->current_picture->data[1],
1638  s->current_picture->linesize[1], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
1639  EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
1640  s->mpvencdsp.draw_edges(s->current_picture->data[2],
1641  s->current_picture->linesize[2], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
1642  EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
1643  }
1644  emms_c();
1645  }
1646 
1647  ff_snow_frame_start(s);
1648 #if FF_API_CODED_FRAME
1649 FF_DISABLE_DEPRECATION_WARNINGS
1650  av_frame_unref(avctx->coded_frame);
1651  ret = av_frame_ref(avctx->coded_frame, s->current_picture);
1652 FF_ENABLE_DEPRECATION_WARNINGS
1653 #endif
1654  if (ret < 0)
1655  return ret;
1656 
1657  s->m.current_picture_ptr= &s->m.current_picture;
1658  s->m.current_picture.f = s->current_picture;
1659  s->m.current_picture.f->pts = pict->pts;
1660  if(pic->pict_type == AV_PICTURE_TYPE_P){
1661  int block_width = (width +15)>>4;
1662  int block_height= (height+15)>>4;
1663  int stride= s->current_picture->linesize[0];
1664 
1665  av_assert0(s->current_picture->data[0]);
1666  av_assert0(s->last_picture[0]->data[0]);
1667 
1668  s->m.avctx= s->avctx;
1669  s->m. last_picture.f = s->last_picture[0];
1670  s->m. new_picture.f = s->input_picture;
1671  s->m. last_picture_ptr= &s->m. last_picture;
1672  s->m.linesize = stride;
1673  s->m.uvlinesize= s->current_picture->linesize[1];
1674  s->m.width = width;
1675  s->m.height= height;
1676  s->m.mb_width = block_width;
1677  s->m.mb_height= block_height;
1678  s->m.mb_stride= s->m.mb_width+1;
1679  s->m.b8_stride= 2*s->m.mb_width+1;
1680  s->m.f_code=1;
1681  s->m.pict_type = pic->pict_type;
1682 #if FF_API_MOTION_EST
1683 FF_DISABLE_DEPRECATION_WARNINGS
1684  s->m.me_method= s->avctx->me_method;
1685 FF_ENABLE_DEPRECATION_WARNINGS
1686 #endif
1687  s->m.motion_est= s->motion_est;
1688  s->m.me.scene_change_score=0;
1689  s->m.me.dia_size = avctx->dia_size;
1690  s->m.quarter_sample= (s->avctx->flags & AV_CODEC_FLAG_QPEL)!=0;
1691  s->m.out_format= FMT_H263;
1692  s->m.unrestricted_mv= 1;
1693 
1694  s->m.lambda = s->lambda;
1695  s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
1696  s->lambda2= s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
1697 
1698  s->m.mecc= s->mecc; //move
1699  s->m.qdsp= s->qdsp; //move
1700  s->m.hdsp = s->hdsp;
1701  ff_init_me(&s->m);
1702  s->hdsp = s->m.hdsp;
1703  s->mecc= s->m.mecc;
1704  }
1705 
1706  if(s->pass1_rc){
1707  memcpy(rc_header_bak, s->header_state, sizeof(s->header_state));
1708  memcpy(rc_block_bak, s->block_state, sizeof(s->block_state));
1709  }
1710 
1711 redo_frame:
1712 
1713  s->spatial_decomposition_count= 5;
1714 
1715  while( !(width >>(s->chroma_h_shift + s->spatial_decomposition_count))
1716  || !(height>>(s->chroma_v_shift + s->spatial_decomposition_count)))
1717  s->spatial_decomposition_count--;
1718 
1719  if (s->spatial_decomposition_count <= 0) {
1720  av_log(avctx, AV_LOG_ERROR, "Resolution too low\n");
1721  return AVERROR(EINVAL);
1722  }
1723 
1724  s->m.pict_type = pic->pict_type;
1725  s->qbias = pic->pict_type == AV_PICTURE_TYPE_P ? 2 : 0;
1726 
1727  ff_snow_common_init_after_header(avctx);
1728 
1729  if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
1730  for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1731  calculate_visual_weight(s, &s->plane[plane_index]);
1732  }
1733  }
1734 
1735  encode_header(s);
1736  s->m.misc_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1737  encode_blocks(s, 1);
1738  s->m.mv_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits;
1739 
1740  for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1741  Plane *p= &s->plane[plane_index];
1742  int w= p->width;
1743  int h= p->height;
1744  int x, y;
1745 // int bits= put_bits_count(&s->c.pb);
1746 
1747  if (!s->memc_only) {
1748  //FIXME optimize
1749  if(pict->data[plane_index]) //FIXME gray hack
1750  for(y=0; y<h; y++){
1751  for(x=0; x<w; x++){
1752  s->spatial_idwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<FRAC_BITS;
1753  }
1754  }
1755  predict_plane(s, s->spatial_idwt_buffer, plane_index, 0);
1756 
1757 #if FF_API_PRIVATE_OPT
1758 FF_DISABLE_DEPRECATION_WARNINGS
1759  if(s->avctx->scenechange_threshold)
1760  s->scenechange_threshold = s->avctx->scenechange_threshold;
1761 FF_ENABLE_DEPRECATION_WARNINGS
1762 #endif
1763 
1764  if( plane_index==0
1765  && pic->pict_type == AV_PICTURE_TYPE_P
1766  && !(avctx->flags&AV_CODEC_FLAG_PASS2)
1767  && s->m.me.scene_change_score > s->scenechange_threshold){
1768  ff_init_range_encoder(c, pkt->data, pkt->size);
1769  ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1770  pic->pict_type= AV_PICTURE_TYPE_I;
1771  s->keyframe=1;
1772  s->current_picture->key_frame=1;
1773  goto redo_frame;
1774  }
1775 
1776  if(s->qlog == LOSSLESS_QLOG){
1777  for(y=0; y<h; y++){
1778  for(x=0; x<w; x++){
1779  s->spatial_dwt_buffer[y*w + x]= (s->spatial_idwt_buffer[y*w + x] + (1<<(FRAC_BITS-1))-1)>>FRAC_BITS;
1780  }
1781  }
1782  }else{
1783  for(y=0; y<h; y++){
1784  for(x=0; x<w; x++){
1785  s->spatial_dwt_buffer[y*w + x]=s->spatial_idwt_buffer[y*w + x]<<ENCODER_EXTRA_BITS;
1786  }
1787  }
1788  }
1789 
1790  ff_spatial_dwt(s->spatial_dwt_buffer, s->temp_dwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
1791 
1792  if(s->pass1_rc && plane_index==0){
1793  int delta_qlog = ratecontrol_1pass(s, pic);
1794  if (delta_qlog <= INT_MIN)
1795  return -1;
1796  if(delta_qlog){
1797  //reordering qlog in the bitstream would eliminate this reset
1798  ff_init_range_encoder(c, pkt->data, pkt->size);
1799  memcpy(s->header_state, rc_header_bak, sizeof(s->header_state));
1800  memcpy(s->block_state, rc_block_bak, sizeof(s->block_state));
1801  encode_header(s);
1802  encode_blocks(s, 0);
1803  }
1804  }
1805 
1806  for(level=0; level<s->spatial_decomposition_count; level++){
1807  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1808  SubBand *b= &p->band[level][orientation];
1809 
1810  quantize(s, b, b->ibuf, b->buf, b->stride, s->qbias);
1811  if(orientation==0)
1812  decorrelate(s, b, b->ibuf, b->stride, pic->pict_type == AV_PICTURE_TYPE_P, 0);
1813  if (!s->no_bitstream)
1814  encode_subband(s, b, b->ibuf, b->parent ? b->parent->ibuf : NULL, b->stride, orientation);
1815  av_assert0(b->parent==NULL || b->parent->stride == b->stride*2);
1816  if(orientation==0)
1817  correlate(s, b, b->ibuf, b->stride, 1, 0);
1818  }
1819  }
1820 
1821  for(level=0; level<s->spatial_decomposition_count; level++){
1822  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1823  SubBand *b= &p->band[level][orientation];
1824 
1825  dequantize(s, b, b->ibuf, b->stride);
1826  }
1827  }
1828 
1829  ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
1830  if(s->qlog == LOSSLESS_QLOG){
1831  for(y=0; y<h; y++){
1832  for(x=0; x<w; x++){
1833  s->spatial_idwt_buffer[y*w + x]<<=FRAC_BITS;
1834  }
1835  }
1836  }
1837  predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1838  }else{
1839  //ME/MC only
1840  if(pic->pict_type == AV_PICTURE_TYPE_I){
1841  for(y=0; y<h; y++){
1842  for(x=0; x<w; x++){
1843  s->current_picture->data[plane_index][y*s->current_picture->linesize[plane_index] + x]=
1844  pict->data[plane_index][y*pict->linesize[plane_index] + x];
1845  }
1846  }
1847  }else{
1848  memset(s->spatial_idwt_buffer, 0, sizeof(IDWTELEM)*w*h);
1849  predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1850  }
1851  }
1852  if(s->avctx->flags&AV_CODEC_FLAG_PSNR){
1853  int64_t error= 0;
1854 
1855  if(pict->data[plane_index]) //FIXME gray hack
1856  for(y=0; y<h; y++){
1857  for(x=0; x<w; x++){
1858  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];
1859  error += d*d;
1860  }
1861  }
1862  s->avctx->error[plane_index] += error;
1863  s->encoding_error[plane_index] = error;
1864  }
1865 
1866  }
1867  emms_c();
1868 
1869  update_last_header_values(s);
1870 
1871  ff_snow_release_buffer(avctx);
1872 
1873  s->current_picture->coded_picture_number = avctx->frame_number;
1874  s->current_picture->pict_type = pic->pict_type;
1875  s->current_picture->quality = pic->quality;
1876  s->m.frame_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1877  s->m.p_tex_bits = s->m.frame_bits - s->m.misc_bits - s->m.mv_bits;
1878  s->m.current_picture.f->display_picture_number =
1879  s->m.current_picture.f->coded_picture_number = avctx->frame_number;
1880  s->m.current_picture.f->quality = pic->quality;
1881  s->m.total_bits += 8*(s->c.bytestream - s->c.bytestream_start);
1882  if(s->pass1_rc)
1883  if (ff_rate_estimate_qscale(&s->m, 0) < 0)
1884  return -1;
1885  if(avctx->flags&AV_CODEC_FLAG_PASS1)
1886  ff_write_pass1_stats(&s->m);
1887  s->m.last_pict_type = s->m.pict_type;
1888 #if FF_API_STAT_BITS
1889 FF_DISABLE_DEPRECATION_WARNINGS
1890  avctx->frame_bits = s->m.frame_bits;
1891  avctx->mv_bits = s->m.mv_bits;
1892  avctx->misc_bits = s->m.misc_bits;
1893  avctx->p_tex_bits = s->m.p_tex_bits;
1894 FF_ENABLE_DEPRECATION_WARNINGS
1895 #endif
1896 
1897  emms_c();
1898 
1899  ff_side_data_set_encoder_stats(pkt, s->current_picture->quality,
1900  s->encoding_error,
1901  (s->avctx->flags&AV_CODEC_FLAG_PSNR) ? 4 : 0,
1902  s->current_picture->pict_type);
1903 
1904 #if FF_API_ERROR_FRAME
1905 FF_DISABLE_DEPRECATION_WARNINGS
1906  memcpy(s->current_picture->error, s->encoding_error, sizeof(s->encoding_error));
1907 FF_ENABLE_DEPRECATION_WARNINGS
1908 #endif
1909 
1910  pkt->size = ff_rac_terminate(c);
1911  if (s->current_picture->key_frame)
1912  pkt->flags |= AV_PKT_FLAG_KEY;
1913  *got_packet = 1;
1914 
1915  return 0;
1916 }
1917 
1918 static av_cold int encode_end(AVCodecContext *avctx)
1919 {
1920  SnowContext *s = avctx->priv_data;
1921 
1922  ff_snow_common_end(s);
1923  ff_rate_control_uninit(&s->m);
1924  av_frame_free(&s->input_picture);
1925  av_freep(&avctx->stats_out);
1926 
1927  return 0;
1928 }
1929 
1930 #define OFFSET(x) offsetof(SnowContext, x)
1931 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1932 static const AVOption options[] = {
1933  {"motion_est", "motion estimation algorithm", OFFSET(motion_est), AV_OPT_TYPE_INT, {.i64 = FF_ME_EPZS }, FF_ME_ZERO, FF_ME_ITER, VE, "motion_est" },
1934  { "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, VE, "motion_est" },
1935  { "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, VE, "motion_est" },
1936  { "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, VE, "motion_est" },
1937  { "iter", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ITER }, 0, 0, VE, "motion_est" },
1938  { "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 },
1939  { "no_bitstream", "Skip final bitstream writeout.", OFFSET(no_bitstream), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1940  { "intra_penalty", "Penalty for intra blocks in block decission", OFFSET(intra_penalty), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1941  { "iterative_dia_size", "Dia size for the iterative ME", OFFSET(iterative_dia_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1942  { "sc_threshold", "Scene change threshold", OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, VE },
1943  { "pred", "Spatial decomposition type", OFFSET(pred), AV_OPT_TYPE_INT, { .i64 = 0 }, DWT_97, DWT_53, VE, "pred" },
1944  { "dwt97", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "pred" },
1945  { "dwt53", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "pred" },
1946  { NULL },
1947 };
1948 
1949 static const AVClass snowenc_class = {
1950  .class_name = "snow encoder",
1951  .item_name = av_default_item_name,
1952  .option = options,
1953  .version = LIBAVUTIL_VERSION_INT,
1954 };
1955 
1956 AVCodec ff_snow_encoder = {
1957  .name = "snow",
1958  .long_name = NULL_IF_CONFIG_SMALL("Snow"),
1959  .type = AVMEDIA_TYPE_VIDEO,
1960  .id = AV_CODEC_ID_SNOW,
1961  .priv_data_size = sizeof(SnowContext),
1962  .init = encode_init,
1963  .encode2 = encode_frame,
1964  .close = encode_end,
1965  .pix_fmts = (const enum AVPixelFormat[]){
1966  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV444P,
1967  AV_PIX_FMT_GRAY8,
1968  AV_PIX_FMT_NONE
1969  },
1970  .priv_class = &snowenc_class,
1971  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
1972  FF_CODEC_CAP_INIT_CLEANUP,
1973 };
SnowContext::last_block_max_depth
int last_block_max_depth
Definition: snow.h:168
MotionEstContext::scratchpad
uint8_t * scratchpad
data area for the ME algo, so that the ME does not need to malloc/free.
Definition: motion_est.h:52
FF_CODEC_CAP_INIT_CLEANUP
#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
snowenc_class
static const AVClass snowenc_class
Definition: snowenc.c:1949
SnowContext::version
int version
Definition: snow.h:135
encode_end
static av_cold int encode_end(AVCodecContext *avctx)
Definition: snowenc.c:1918
SnowContext::m
MpegEncContext m
Definition: snow.h:183
MpegEncContext::frame_bits
int frame_bits
bits used for the current frame
Definition: mpegvideo.h:338
SnowContext::mv_scale
int mv_scale
Definition: snow.h:160
NULL
#define NULL
Definition: coverity.c:32
MpegEncContext::rc_context
RateControlContext rc_context
contains stuff only accessed in ratecontrol.c
Definition: mpegvideo.h:341
predict_plane
static av_always_inline void predict_plane(SnowContext *s, IDWTELEM *buf, int plane_index, int add)
Definition: snow.h:455
ff_snow_frame_start
int ff_snow_frame_start(SnowContext *s)
Definition: snow.c:655
ff_rate_control_uninit
av_cold void ff_rate_control_uninit(MpegEncContext *s)
Definition: ratecontrol.c:672
QSHIFT
#define QSHIFT
Definition: snow.h:43
P_MEDIAN
#define P_MEDIAN
Definition: snowenc.c:222
MpegEncContext::picture_number
int picture_number
Definition: mpegvideo.h:124
s
const char * s
Definition: avisynth_c.h:768
P
#define P
P_TOPRIGHT
#define P_TOPRIGHT
Definition: snowenc.c:221
SnowContext::avctx
AVCodecContext * avctx
Definition: snow.h:116
SnowContext::block_max_depth
int block_max_depth
Definition: snow.h:167
SnowContext::last_spatial_decomposition_count
int last_spatial_decomposition_count
Definition: snow.h:140
shift
static int shift(int a, int b)
Definition: sonic.c:82
SnowContext::chroma_v_shift
int chroma_v_shift
Definition: snow.h:153
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
MotionEstContext::skip
int skip
set if ME is skipped for the current MB
Definition: motion_est.h:49
h
h
Definition: vp9dsp_template.c:2038
AVOption
AVOption.
Definition: opt.h:246
ff_side_data_set_encoder_stats
int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)
Definition: avpacket.c:697
SnowContext::pass1_rc
int pass1_rc
Definition: snow.h:159
AVCodecContext::error
uint64_t error[AV_NUM_DATA_POINTERS]
error
Definition: avcodec.h:3101
state
static struct @260 state
AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
RateControlContext::entry
RateControlEntry * entry
Definition: ratecontrol.h:65
SnowContext::run_buffer
int * run_buffer
Definition: snow.h:150
AVCodecContext::bit_rate
int64_t bit_rate
the average bitrate
Definition: avcodec.h:1826
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:86
P_LEFT
#define P_LEFT
Definition: snowenc.c:219
ff_h263_encode_init
void ff_h263_encode_init(MpegEncContext *s)
Definition: ituh263enc.c:761
ff_epzs_motion_search
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)
Definition: motion_est_template.c:976
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
AV_OPT_TYPE_INT
Definition: opt.h:223
SnowContext::always_reset
int always_reset
Definition: snow.h:134
SnowContext::no_bitstream
int no_bitstream
Definition: snow.h:177
MotionEstContext::current_mv_penalty
uint8_t * current_mv_penalty
Definition: motion_est.h:94
BLOCK_INTRA
#define BLOCK_INTRA
Intra block, inter otherwise.
Definition: snow.h:58
rangecoder.h
Range coder.
RangeCoder::bytestream_end
uint8_t * bytestream_end
Definition: rangecoder.h:44
AVPacket::size
int size
Definition: avcodec.h:1680
b
const char * b
Definition: vf_curves.c:113
AVCodecContext::mb_lmin
int mb_lmin
minimum MB Lagrange multiplier
Definition: avcodec.h:2401
av_log2
int av_log2(unsigned v)
Definition: intmath.c:26
SnowContext::scenechange_threshold
int scenechange_threshold
Definition: snow.h:181
MotionEstContext::sub_penalty_factor
int sub_penalty_factor
Definition: motion_est.h:67
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1989
SnowContext::max_ref_frames
int max_ref_frames
Definition: snow.h:142
MotionEstContext::score_map
uint32_t * score_map
map to store the scores
Definition: motion_est.h:59
FF_CMP_W97
#define FF_CMP_W97
Definition: avcodec.h:2210
mpegvideo.h
mpegvideo header.
Plane::last_hcoeff
int8_t last_hcoeff[HTAPS_MAX/2]
Definition: snow.h:110
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:222
MotionEstContext::scene_change_score
int scene_change_score
Definition: motion_est.h:87
ff_snow_common_init_after_header
int ff_snow_common_init_after_header(AVCodecContext *avctx)
Definition: snow.c:514
update_last_header_values
static void update_last_header_values(SnowContext *s)
Definition: snowenc.c:1461
SnowContext::keyframe
int keyframe
Definition: snow.h:133
avcodec_get_chroma_sub_sample
attribute_deprecated void avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Definition: imgconvert.c:38
run
uint8_t run
Definition: svq3.c:206
pkt
static AVPacket pkt
Definition: demuxing_decoding.c:54
EDGE_TOP
#define EDGE_TOP
Definition: mpegvideoencdsp.h:29
FF_API_EMU_EDGE
#define FF_API_EMU_EDGE
Definition: version.h:115
src
#define src
Definition: vp8dsp.c:254
FF_LAMBDA_SHIFT
#define FF_LAMBDA_SHIFT
Definition: avutil.h:225
MpegEncContext::qdsp
QpelDSPContext qdsp
Definition: mpegvideo.h:232
AVCodec
AVCodec.
Definition: avcodec.h:3739
MotionEstContext::mv_penalty
uint8_t(* mv_penalty)[MAX_DMV *2+1]
bit amount needed to encode a MV
Definition: motion_est.h:93
MpegEncContext::qscale
int qscale
QP.
Definition: mpegvideo.h:201
ff_snow_reset_contexts
void ff_snow_reset_contexts(SnowContext *s)
Definition: snow.c:96
set_blocks
static void set_blocks(SnowContext *s, int level, int x, int y, int l, int cb, int cr, int mx, int my, int ref, int type)
Definition: snow.h:462
IDWTELEM
short IDWTELEM
Definition: dirac_dwt.h:27
last_picture
enum AVPictureType last_picture
Definition: movenc.c:68
SnowContext::hdsp
HpelDSPContext hdsp
Definition: snow.h:119
FF_ME_ZERO
#define FF_ME_ZERO
Definition: motion_est.h:40
AVCodecContext::me_method
attribute_deprecated int me_method
This option does nothing.
Definition: avcodec.h:1996
ff_square_tab
uint32_t ff_square_tab[512]
Definition: me_cmp.c:32
ff_snow_encoder
AVCodec ff_snow_encoder
Definition: snowenc.c:1956
log2
#define log2(x)
Definition: libm.h:404
SnowContext::mecc
MECmpContext mecc
Definition: snow.h:118
encode_subband_c0run
static int encode_subband_c0run(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation)
Definition: snowenc.c:776
OFFSET
#define OFFSET(x)
Definition: snowenc.c:1930
SubBand::qlog
int qlog
log(qscale)/log[2^(1/6)]
Definition: snow.h:88
ff_rac_terminate
int ff_rac_terminate(RangeCoder *c)
Definition: rangecoder.c:109
BlockNode
Definition: snow.h:51
SubBand::width
int width
Definition: cfhd.h:48
get_penalty_factor
static int get_penalty_factor(int lambda, int lambda2, int type)
Definition: snowenc.c:194
block
static int16_t block[64]
Definition: dct.c:115
BlockNode::level
uint8_t level
Definition: snow.h:61
AVCodecContext::mv_bits
attribute_deprecated int mv_bits
Definition: avcodec.h:2905
AVClass::class_name
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
BlockNode::ref
uint8_t ref
Reference frame index.
Definition: snow.h:54
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
ff_alloc_packet2
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: encode.c:32
AV_OPT_TYPE_CONST
Definition: opt.h:232
cb
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:106
ff_mpegvideoencdsp_init
av_cold void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
Definition: mpegvideoencdsp.c:232
FF_CODEC_CAP_INIT_THREADSAFE
#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
AVCodecContext::mb_lmax
int mb_lmax
maximum MB Lagrange multiplier
Definition: avcodec.h:2408
SnowContext::b_height
int b_height
Definition: snow.h:166
encode_frame
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: snowenc.c:1564
MpegEncContext::sc
ScratchpadContext sc
Definition: mpegvideo.h:199
uint8_t
uint8_t
Definition: audio_convert.c:194
ME_MAP_SIZE
#define ME_MAP_SIZE
Definition: motion_est.h:38
BlockNode::mx
int16_t mx
Motion vector component X, see mv_scale.
Definition: snow.h:52
av_cold
#define av_cold
Definition: attributes.h:82
FRAC_BITS
#define FRAC_BITS
Definition: g729postfilter.c:33
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:150
put_symbol
static av_noinline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed)
Definition: ffv1enc.c:233
av_assert2
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
search
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
opt.h
AVOptions.
MpegEncContext::out_format
enum OutputFormat out_format
output format
Definition: mpegvideo.h:101
SnowContext::ref_scores
uint32_t * ref_scores[MAX_REF_FRAMES]
Definition: snow.h:145
ff_get_mb_score
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)
Definition: motion_est_template.c:192
MotionEstContext
Motion estimation context.
Definition: motion_est.h:47
av_frame_ref
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:395
emms_c
#define emms_c()
Definition: internal.h:54
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:294
MpegEncContext::misc_bits
int misc_bits
cbp, mb_type
Definition: mpegvideo.h:352
AVCodecContext::me_cmp
int me_cmp
motion estimation comparison function
Definition: avcodec.h:2179
MpegEncContext::current_picture
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:177
ENCODER_EXTRA_BITS
#define ENCODER_EXTRA_BITS
Definition: snow.h:75
calculate_visual_weight
static void calculate_visual_weight(SnowContext *s, Plane *p)
Definition: snowenc.c:1538
height
#define height
BlockNode::my
int16_t my
Motion vector component Y, see mv_scale.
Definition: snow.h:53
AVPacket::data
uint8_t * data
Definition: avcodec.h:1679
snow_dwt.h
ff_w97_32_c
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
null_block
static const BlockNode null_block
Definition: snow.h:64
encode_blocks
static void encode_blocks(SnowContext *s, int search)
Definition: snowenc.c:1222
MpegEncContext::mb_height
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:126
size
ptrdiff_t size
Definition: opengl_enc.c:101
ff_snow_release_buffer
void ff_snow_release_buffer(AVCodecContext *avctx)
Definition: snow.c:640
QEXPSHIFT
#define QEXPSHIFT
Definition: snow.h:507
AVCodecContext::stats_out
char * stats_out
pass1 encoding statistics output buffer
Definition: avcodec.h:2931
FF_CMP_SSE
#define FF_CMP_SSE
Definition: avcodec.h:2199
AV_INPUT_BUFFER_MIN_SIZE
#define AV_INPUT_BUFFER_MIN_SIZE
minimum encoding buffer size Used to avoid some checks during header writing.
Definition: avcodec.h:784
AVFrame::error
attribute_deprecated uint64_t error[AV_NUM_DATA_POINTERS]
Definition: frame.h:336
put_symbol2
static void put_symbol2(RangeCoder *c, uint8_t *state, int v, int log2)
Definition: snow.h:563
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
ff_sqrt
#define ff_sqrt
Definition: mathops.h:206
SubBand
Definition: cfhd.h:43
ROUNDED_DIV
#define ROUNDED_DIV(a, b)
Definition: common.h:56
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1711
DWT_97
#define DWT_97
Definition: snow_dwt.h:66
SnowContext::block
BlockNode * block
Definition: snow.h:171
SnowContext::mpvencdsp
MpegvideoEncDSPContext mpvencdsp
Definition: snow.h:123
Plane::last_diag_mc
int last_diag_mc
Definition: snow.h:111
EDGE_WIDTH
#define EDGE_WIDTH
Definition: mpegpicture.h:33
MAX_DMV
#define MAX_DMV
Definition: motion_est.h:37
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
SnowContext::ref_mvs
int16_t(*[MAX_REF_FRAMES] ref_mvs)[2]
Definition: snow.h:144
MB_SIZE
#define MB_SIZE
Definition: cinepakenc.c:83
AV_CODEC_FLAG_4MV
#define AV_CODEC_FLAG_4MV
4 MV per MB allowed / advanced prediction for H.263.
Definition: avcodec.h:880
MpegEncContext::total_bits
int64_t total_bits
Definition: mpegvideo.h:337
SnowContext::me_cache_generation
unsigned me_cache_generation
Definition: snow.h:174
av_default_item_name
av_default_item_name
Definition: libopenh264enc.c:78
AVERROR
#define AVERROR(e)
Definition: error.h:43
ff_rate_control_init
av_cold int ff_rate_control_init(MpegEncContext *s)
Definition: ratecontrol.c:472
AVCodecContext::me_sub_cmp
int me_sub_cmp
subpixel motion estimation comparison function
Definition: avcodec.h:2185
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:163
ff_write_pass1_stats
void ff_write_pass1_stats(MpegEncContext *s)
Definition: ratecontrol.c:38
MpegEncContext::unrestricted_mv
int unrestricted_mv
mv can point outside of the coded picture
Definition: mpegvideo.h:220
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
Plane::diag_mc
int diag_mc
Definition: snow.h:106
r
const char * r
Definition: vf_curves.c:111
pred_mv
static void pred_mv(DiracBlock *block, int stride, int x, int y, int ref)
Definition: diracdec.c:1356
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
ff_obmc_tab
const uint8_t *const ff_obmc_tab[4]
Definition: snowdata.h:123
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1856
get_dc
static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index)
Definition: snowenc.c:510
width
uint16_t width
Definition: gdv.c:47
SubBand::stride
int stride
Definition: cfhd.h:46
AVCodec::name
const char * name
Name of the codec implementation.
Definition: avcodec.h:3746
correlate
static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median)
Definition: snowenc.c:1351
MpegEncContext::quarter_sample
int quarter_sample
1->qpel, 0->half pel ME/MC
Definition: mpegvideo.h:399
square
static int square(int x)
Definition: roqvideoenc.c:113
SnowContext::lambda
int lambda
Definition: snow.h:157
SnowContext::intra_penalty
int intra_penalty
Definition: snow.h:178
FFMAX
#define FFMAX(a, b)
Definition: common.h:94
av_mallocz_array
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:229
SnowContext::emu_edge_buffer
uint8_t * emu_edge_buffer
Definition: snow.h:186
RangeCoder::bytestream
uint8_t * bytestream
Definition: rangecoder.h:43
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1685
BlockNode::color
uint8_t color[3]
Color for intra.
Definition: snow.h:55
pass
#define pass
Definition: fft_template.c:593
SnowContext::ref_frames
int ref_frames
Definition: snow.h:143
Plane::htaps
int htaps
Definition: snow.h:104
SnowContext::qlog
int qlog
Definition: snow.h:155
AVCodecContext::refs
int refs
number of reference frames
Definition: avcodec.h:2442
FF_CMP_BIT
#define FF_CMP_BIT
Definition: avcodec.h:2203
Plane::band
SubBand band[DWT_LEVELS][4]
Definition: cfhd.h:68
AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
ff_quant3bA
const int8_t ff_quant3bA[256]
Definition: snowdata.h:104
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:284
SubBand::ibuf
uint8_t * ibuf
Definition: cfhd.h:53
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
AV_CODEC_FLAG_QSCALE
#define AV_CODEC_FLAG_QSCALE
Use fixed qscale.
Definition: avcodec.h:876
FFMIN
#define FFMIN(a, b)
Definition: common.h:96
AVFrame::display_picture_number
int display_picture_number
picture number in display order
Definition: frame.h:319
ME_ITER
iterative search
Definition: avcodec.h:814
MpegEncContext::me_method
int me_method
ME algorithm.
Definition: mpegvideo.h:256
check_block_inter
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:944
ME_CACHE_SIZE
#define ME_CACHE_SIZE
Definition: snow.h:172
LOSSLESS_QLOG
#define LOSSLESS_QLOG
Definition: snow.h:45
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:1948
value
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
MpegEncContext::current_picture_ptr
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:181
VE
#define VE
Definition: snowenc.c:1931
SnowContext::scratchbuf
uint8_t * scratchbuf
Definition: snow.h:185
AV_CODEC_FLAG_PSNR
#define AV_CODEC_FLAG_PSNR
error[?] variables will be set during encoding.
Definition: avcodec.h:908
encode_q_branch
static int encode_q_branch(SnowContext *s, int level, int x, int y)
Definition: snowenc.c:226
SnowContext::plane
Plane plane[MAX_PLANES]
Definition: snow.h:170
AV_OPT_TYPE_BOOL
Definition: opt.h:240
ff_rate_estimate_qscale
float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run)
Definition: ratecontrol.c:868
AV_CODEC_FLAG_PASS1
#define AV_CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
Definition: avcodec.h:892
add_yblock
static av_always_inline void add_yblock(SnowContext *s, int sliced, slice_buffer *sb, IDWTELEM *dst, uint8_t *dst8, const uint8_t *obmc, int src_x, int src_y, int b_w, int b_h, int w, int h, int dst_stride, int src_stride, int obmc_stride, int b_x, int b_y, int add, int offset_dst, int plane_index)
Definition: snow.h:280
SnowContext::b_width
int b_width
Definition: snow.h:165
ff_build_rac_states
void ff_build_rac_states(RangeCoder *c, int factor, int max_p)
Definition: rangecoder.c:68
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
AVFrame::quality
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:324
MpegEncContext::me
MotionEstContext me
Definition: mpegvideo.h:282
SnowContext::last_mv_scale
int last_mv_scale
Definition: snow.h:161
SnowContext::chroma_h_shift
int chroma_h_shift
Definition: snow.h:152
FF_CMP_SAD
#define FF_CMP_SAD
Definition: avcodec.h:2198
error
static void error(const char *err)
Definition: target_dec_fuzzer.c:59
MotionEstContext::penalty_factor
int penalty_factor
an estimate of the bits required to code a given mv value, e.g.
Definition: motion_est.h:62
pred
static const float pred[4]
Definition: siprdata.h:259
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
same_block
static av_always_inline int same_block(BlockNode *a, BlockNode *b)
Definition: snow.h:270
AVCodecContext::misc_bits
attribute_deprecated int misc_bits
Definition: avcodec.h:2919
SnowContext::block_state
uint8_t block_state[128+32 *128]
Definition: snow.h:132
SnowContext::qbias
int qbias
Definition: snow.h:162
AVFrame::coded_picture_number
int coded_picture_number
picture number in bitstream order
Definition: frame.h:315
FF_ME_XONE
#define FF_ME_XONE
Definition: motion_est.h:42
FF_LAMBDA_SCALE
#define FF_LAMBDA_SCALE
Definition: avutil.h:226
ff_snow_get_buffer
int ff_snow_get_buffer(SnowContext *s, AVFrame *frame)
Definition: snow.c:69
MpegEncContext::lambda2
unsigned int lambda2
(lambda*lambda) >> FF_LAMBDA_SHIFT
Definition: mpegvideo.h:204
avcodec.h
Libavcodec external API header.
encode_header
static void encode_header(SnowContext *s)
Definition: snowenc.c:1388
AVCodecContext::scenechange_threshold
attribute_deprecated int scenechange_threshold
Definition: avcodec.h:2346
FF_CMP_RD
#define FF_CMP_RD
Definition: avcodec.h:2204
MpegEncContext::linesize
ptrdiff_t linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:131
MotionEstContext::avctx
AVCodecContext * avctx
Definition: motion_est.h:48
LOG2_OBMC_MAX
#define LOG2_OBMC_MAX
Definition: snow.h:49
SnowContext::spatial_decomposition_count
int spatial_decomposition_count
Definition: snow.h:139
DWTELEM
int DWTELEM
Definition: dirac_dwt.h:26
AVCodecContext::prediction_method
attribute_deprecated int prediction_method
Definition: avcodec.h:2152
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:232
ff_set_cmp
void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type)
Definition: me_cmp.c:440
AVCodecContext
main external API structure.
Definition: avcodec.h:1761
Plane::hcoeff
int8_t hcoeff[HTAPS_MAX/2]
Definition: snow.h:105
AV_CODEC_ID_SNOW
Definition: avcodec.h:427
QROOT
#define QROOT
Definition: snow.h:44
ff_snow_pred_block
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
MpegEncContext::height
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:97
FF_CMP_NSSE
#define FF_CMP_NSSE
Definition: avcodec.h:2208
FF_ME_EPZS
#define FF_ME_EPZS
Definition: motion_est.h:41
ff_snow_alloc_blocks
int ff_snow_alloc_blocks(SnowContext *s)
Definition: snow.c:110
FF_CMP_SATD
#define FF_CMP_SATD
Definition: avcodec.h:2200
SubBand::parent
struct SubBand * parent
Definition: diracdec.c:98
buf
void * buf
Definition: avisynth_c.h:690
FF_CMP_DCT
#define FF_CMP_DCT
Definition: avcodec.h:2201
type
GLint GLenum type
Definition: opengl_enc.c:105
get_rac_count
static int get_rac_count(RangeCoder *c)
Definition: rangecoder.h:79
encode_q_branch2
static void encode_q_branch2(SnowContext *s, int level, int x, int y)
Definition: snowenc.c:454
libm.h
Replacements for frequently missing libm functions.
SnowContext::me_cache
unsigned me_cache[ME_CACHE_SIZE]
Definition: snow.h:173
AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
ff_init_range_encoder
av_cold void ff_init_range_encoder(RangeCoder *c, uint8_t *buf, int buf_size)
Definition: rangecoder.c:42
Picture::mc_mb_var_sum
int64_t mc_mb_var_sum
motion compensated MB variance for current frame
Definition: mpegpicture.h:82
index
int index
Definition: gxfenc.c:89
Picture::f
struct AVFrame * f
Definition: mpegpicture.h:46
SnowContext::nb_planes
int nb_planes
Definition: snow.h:169
SnowContext::pred
int pred
Definition: snow.h:192
get_block_bits
static int get_block_bits(SnowContext *s, int x, int y, int w)
Definition: snowenc.c:568
ff_spatial_idwt
void ff_spatial_idwt(IDWTELEM *buffer, IDWTELEM *temp, int width, int height, int stride, int type, int decomposition_count)
Definition: snow_dwt.c:731
mid_pred
#define mid_pred
Definition: mathops.h:97
MpegEncContext::uvlinesize
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
Definition: mpegvideo.h:132
FF_CMP_PSNR
#define FF_CMP_PSNR
Definition: avcodec.h:2202
ff_w53_32_c
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
SnowContext::temp_dwt_buffer
DWTELEM * temp_dwt_buffer
Definition: snow.h:147
FF_CMP_W53
#define FF_CMP_W53
Definition: avcodec.h:2209
SnowContext::header_state
uint8_t header_state[32]
Definition: snow.h:131
SnowContext::motion_est
int motion_est
Definition: snow.h:179
MpegEncContext::f_code
int f_code
forward MV resolution
Definition: mpegvideo.h:235
FF_CMP_DCT264
#define FF_CMP_DCT264
Definition: avcodec.h:2212
SnowContext::last_qlog
int last_qlog
Definition: snow.h:156
SnowContext::encoding_error
uint64_t encoding_error[AV_NUM_DATA_POINTERS]
Definition: snow.h:190
AVCodecContext::p_tex_bits
attribute_deprecated int p_tex_bits
Definition: avcodec.h:2911
MpegEncContext::pict_type
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:209
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
SnowContext::spatial_scalability
int spatial_scalability
Definition: snow.h:154
qscale2qlog
static int qscale2qlog(int qscale)
Definition: snowenc.c:1481
pix_sum
static int pix_sum(uint8_t *pix, int line_size, int w, int h)
Definition: snowenc.c:162
ff_snow_common_init
int ff_snow_common_init(AVCodecContext *avctx)
encode_qlogs
static void encode_qlogs(SnowContext *s)
Definition: snowenc.c:1375
MpegEncContext::motion_est
int motion_est
ME algorithm.
Definition: mpegvideo.h:258
SnowContext::iterative_dia_size
int iterative_dia_size
Definition: snow.h:180
av_frame_unref
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:505
AVCodecContext::global_quality
int global_quality
Global quality for codecs which cannot change it per frame.
Definition: avcodec.h:1842
MECmpContext::me_cmp
me_cmp_func me_cmp[6]
Definition: me_cmp.h:72
ff_init_me
int ff_init_me(MpegEncContext *s)
Definition: motion_est.c:306
AV_CODEC_FLAG_QPEL
#define AV_CODEC_FLAG_QPEL
Use qpel MC.
Definition: avcodec.h:888
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:215
SnowContext::spatial_decomposition_type
int spatial_decomposition_type
Definition: snow.h:136
SnowContext::current_picture
AVFrame * current_picture
Definition: snow.h:126
SnowContext::memc_only
int memc_only
Definition: snow.h:176
level
uint8_t level
Definition: svq3.c:207
get_block_rd
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:606
MpegEncContext::b8_stride
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
Definition: mpegvideo.h:128
MpegEncContext::avctx
struct AVCodecContext * avctx
Definition: mpegvideo.h:95
AVCodecContext::gop_size
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1974
get_4block_rd
static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index)
Definition: snowenc.c:707
CODEC_FLAG_EMU_EDGE
#define CODEC_FLAG_EMU_EDGE
Definition: avcodec.h:1140
int
int
Definition: ffmpeg_filter.c:190
stride
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
AVCodecContext::mb_cmp
int mb_cmp
macroblock comparison function (not supported yet)
Definition: avcodec.h:2191
MpegEncContext::mecc
MECmpContext mecc
Definition: mpegvideo.h:228
AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:70
MID_STATE
#define MID_STATE
Definition: snow.h:40
SnowContext::temporal_decomposition_type
int temporal_decomposition_type
Definition: snow.h:138
QBIAS_SHIFT
#define QBIAS_SHIFT
Definition: snow.h:164
FF_DISABLE_DEPRECATION_WARNINGS
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:83
internal.h
common internal api header.
MpegEncContext::mb_stride
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
Definition: mpegvideo.h:127
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
SnowContext::temp_idwt_buffer
IDWTELEM * temp_idwt_buffer
Definition: snow.h:149
ff_spatial_dwt
void ff_spatial_dwt(DWTELEM *buffer, DWTELEM *temp, int width, int height, int stride, int type, int decomposition_count)
Definition: snow_dwt.c:319
c
static double c[64]
Definition: vsrc_mptestsrc.c:87
MpegEncContext::last_pict_type
int last_pict_type
Definition: mpegvideo.h:211
LOG2_MB_SIZE
#define LOG2_MB_SIZE
Definition: snow.h:73
put_rac
#define put_rac(C, S, B)
SnowContext::spatial_dwt_buffer
DWTELEM * spatial_dwt_buffer
Definition: snow.h:146
AVCodecContext::coded_frame
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:3183
encode_init
static av_cold int encode_init(AVCodecContext *avctx)
Definition: snowenc.c:36
SnowContext::lambda2
int lambda2
Definition: snow.h:158
MECmpContext::me_sub_cmp
me_cmp_func me_sub_cmp[6]
Definition: me_cmp.h:73
SubBand::state
uint8_t state[7+512][32]
Definition: snow.h:96
options
static const AVOption options[]
Definition: snowenc.c:1932
MotionEstContext::map
uint32_t * map
map to avoid duplicate evaluations
Definition: motion_est.h:58
SnowContext::spatial_idwt_buffer
IDWTELEM * spatial_idwt_buffer
Definition: snow.h:148
RangeCoder::bytestream_start
uint8_t * bytestream_start
Definition: rangecoder.h:42
AV_CODEC_FLAG_PASS2
#define AV_CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
Definition: avcodec.h:896
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:1803
check_4block_inter
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:949
dequantize
static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride)
Definition: snowenc.c:1305
AVCodecContext::dia_size
int dia_size
ME diamond size & shape.
Definition: avcodec.h:2221
AVCodecContext::frame_bits
attribute_deprecated int frame_bits
Definition: avcodec.h:2923
FF_ENABLE_DEPRECATION_WARNINGS
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
FF_ME_ITER
#define FF_ME_ITER
Definition: snow.h:38
ScratchpadContext::obmc_scratchpad
uint8_t * obmc_scratchpad
Definition: mpegpicture.h:38
MpegvideoEncDSPContext::draw_edges
void(* draw_edges)(uint8_t *buf, int wrap, int width, int height, int w, int h, int sides)
Definition: mpegvideoencdsp.h:43
init_ref
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
SnowContext::colorspace_type
int colorspace_type
Definition: snow.h:151
Plane::last_htaps
int last_htaps
Definition: snow.h:109
MpegEncContext::bit_rate
int64_t bit_rate
wanted bit rate
Definition: mpegvideo.h:100
AVFrame::key_frame
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:279
SubBand::height
int height
Definition: cfhd.h:50
DWT_53
#define DWT_53
Definition: snow_dwt.h:67
FF_QP2LAMBDA
#define FF_QP2LAMBDA
factor to convert from H.263 QP to lambda
Definition: avutil.h:227
lrint
#define lrint
Definition: tablegen.h:53
Plane::fast_mc
int fast_mc
Definition: snow.h:107
EDGE_BOTTOM
#define EDGE_BOTTOM
Definition: mpegvideoencdsp.h:30
Plane::width
int width
Definition: cfhd.h:57
ff_snow_common_end
av_cold void ff_snow_common_end(SnowContext *s)
Definition: snow.c:693
SnowContext::c
RangeCoder c
Definition: snow.h:117
ff_qexp
uint8_t ff_qexp[QROOT]
Definition: snowdata.h:128
AVCodecContext::frame_number
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:2554
SubBand::buf
DWTELEM * buf
Definition: snow.h:89
P_TOP
#define P_TOP
Definition: snowenc.c:220
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
MAX_REF_FRAMES
#define MAX_REF_FRAMES
Definition: snow.h:47
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
av_always_inline
#define av_always_inline
Definition: attributes.h:39
MotionEstContext::temp
uint8_t * temp
Definition: motion_est.h:56
inverse
static uint32_t inverse(uint32_t v)
find multiplicative inverse modulo 2 ^ 32
Definition: asfcrypt.c:35
BlockNode::type
uint8_t type
Bitfield of BLOCK_*.
Definition: snow.h:56
stride
#define stride
ratecontrol_1pass
static int ratecontrol_1pass(SnowContext *s, AVFrame *pict)
Definition: snowenc.c:1486
SnowContext::last_picture
AVFrame * last_picture[MAX_REF_FRAMES]
Definition: snow.h:127
Plane::height
int height
Definition: cfhd.h:58
SnowContext::last_qbias
int last_qbias
Definition: snow.h:163
cr
static double cr(void *priv, double x, double y)
Definition: vf_geq.c:107
SnowContext::input_picture
AVFrame * input_picture
new_picture with the internal linesizes
Definition: snow.h:125
pix_norm1
static int pix_norm1(uint8_t *pix, int line_size, int w)
Definition: snowenc.c:178
SnowContext::temporal_decomposition_count
int temporal_decomposition_count
Definition: snow.h:141
Picture::mb_var_sum
int64_t mb_var_sum
sum of MB variance for current frame
Definition: mpegpicture.h:81
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
AVPacket
This structure stores compressed data.
Definition: avcodec.h:1656
decorrelate
static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median)
Definition: snowenc.c:1327
MotionEstContext::sub_motion_search
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
BLOCK_OPT
#define BLOCK_OPT
Block needs no checks in this round of iterative motion estiation.
Definition: snow.h:59
quantize
static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias)
Definition: snowenc.c:1244
encode_subband
static int encode_subband(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation)
Definition: snowenc.c:896
SnowContext::last_spatial_decomposition_type
int last_spatial_decomposition_type
Definition: snow.h:137
t2
#define t2
Definition: regdef.h:30
AV_PICTURE_TYPE_P
Predicted.
Definition: avutil.h:275
MpegEncContext::lambda
unsigned int lambda
Lagrange multiplier used in rate distortion.
Definition: mpegvideo.h:203
Plane
Definition: cfhd.h:56
tb
#define tb
Definition: regdef.h:68
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
MpegEncContext::hdsp
HpelDSPContext hdsp
Definition: mpegvideo.h:226
iterative_me
static void iterative_me(SnowContext *s)
Definition: snowenc.c:995
SnowContext::qdsp
QpelDSPContext qdsp
Definition: snow.h:120
check_block
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:903
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:26
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