FFmpeg  4.4.8
snowenc.c
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1 /*
2  * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "libavutil/intmath.h"
22 #include "libavutil/libm.h"
23 #include "libavutil/log.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/pixdesc.h"
26 #include "avcodec.h"
27 #include "internal.h"
28 #include "packet_internal.h"
29 #include "snow_dwt.h"
30 #include "snow.h"
31 
32 #include "rangecoder.h"
33 #include "mathops.h"
34 
35 #include "mpegvideo.h"
36 #include "h263.h"
37 
38 static av_cold int encode_init(AVCodecContext *avctx)
39 {
40  SnowContext *s = avctx->priv_data;
41  int plane_index, ret;
42  int i;
43 
44 #if FF_API_PRIVATE_OPT
45 FF_DISABLE_DEPRECATION_WARNINGS
46  if (avctx->prediction_method)
47  s->pred = avctx->prediction_method;
48 FF_ENABLE_DEPRECATION_WARNINGS
49 #endif
50 
51  if(s->pred == DWT_97
52  && (avctx->flags & AV_CODEC_FLAG_QSCALE)
53  && avctx->global_quality == 0){
54  av_log(avctx, AV_LOG_ERROR, "The 9/7 wavelet is incompatible with lossless mode.\n");
55  return AVERROR(EINVAL);
56  }
57 
58  s->spatial_decomposition_type= s->pred; //FIXME add decorrelator type r transform_type
59 
60  s->mv_scale = (avctx->flags & AV_CODEC_FLAG_QPEL) ? 2 : 4;
61  s->block_max_depth= (avctx->flags & AV_CODEC_FLAG_4MV ) ? 1 : 0;
62 
63  for(plane_index=0; plane_index<3; plane_index++){
64  s->plane[plane_index].diag_mc= 1;
65  s->plane[plane_index].htaps= 6;
66  s->plane[plane_index].hcoeff[0]= 40;
67  s->plane[plane_index].hcoeff[1]= -10;
68  s->plane[plane_index].hcoeff[2]= 2;
69  s->plane[plane_index].fast_mc= 1;
70  }
71 
72  if ((ret = ff_snow_common_init(avctx)) < 0) {
73  return ret;
74  }
75  ff_mpegvideoencdsp_init(&s->mpvencdsp, avctx);
76 
77  ff_snow_alloc_blocks(s);
78 
79  s->version=0;
80 
81  s->m.avctx = avctx;
82  s->m.bit_rate= avctx->bit_rate;
83  s->m.lmin = avctx->mb_lmin;
84  s->m.lmax = avctx->mb_lmax;
85  s->m.mb_num = (avctx->width * avctx->height + 255) / 256; // For ratecontrol
86 
87  s->m.me.temp =
88  s->m.me.scratchpad= av_mallocz_array((avctx->width+64), 2*16*2*sizeof(uint8_t));
89  s->m.me.map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
90  s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
91  s->m.sc.obmc_scratchpad= av_mallocz(MB_SIZE*MB_SIZE*12*sizeof(uint32_t));
92  if (!s->m.me.scratchpad || !s->m.me.map || !s->m.me.score_map || !s->m.sc.obmc_scratchpad)
93  return AVERROR(ENOMEM);
94 
95  ff_h263_encode_init(&s->m); //mv_penalty
96 
97  s->max_ref_frames = av_clip(avctx->refs, 1, MAX_REF_FRAMES);
98 
99  if(avctx->flags&AV_CODEC_FLAG_PASS1){
100  if(!avctx->stats_out)
101  avctx->stats_out = av_mallocz(256);
102 
103  if (!avctx->stats_out)
104  return AVERROR(ENOMEM);
105  }
106  if((avctx->flags&AV_CODEC_FLAG_PASS2) || !(avctx->flags&AV_CODEC_FLAG_QSCALE)){
107  ret = ff_rate_control_init(&s->m);
108  if(ret < 0)
109  return ret;
110  }
111  s->pass1_rc= !(avctx->flags & (AV_CODEC_FLAG_QSCALE|AV_CODEC_FLAG_PASS2));
112 
113  switch(avctx->pix_fmt){
114  case AV_PIX_FMT_YUV444P:
115 // case AV_PIX_FMT_YUV422P:
116  case AV_PIX_FMT_YUV420P:
117 // case AV_PIX_FMT_YUV411P:
118  case AV_PIX_FMT_YUV410P:
119  s->nb_planes = 3;
120  s->colorspace_type= 0;
121  break;
122  case AV_PIX_FMT_GRAY8:
123  s->nb_planes = 1;
124  s->colorspace_type = 1;
125  break;
126 /* case AV_PIX_FMT_RGB32:
127  s->colorspace= 1;
128  break;*/
129  default:
130  av_log(avctx, AV_LOG_ERROR, "pixel format not supported\n");
131  return AVERROR_PATCHWELCOME;
132  }
133 
134  ret = av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift,
135  &s->chroma_v_shift);
136  if (ret) {
137  av_log(avctx, AV_LOG_ERROR, "pixel format invalid or unknown\n");
138  return ret;
139  }
140 
141  ff_set_cmp(&s->mecc, s->mecc.me_cmp, s->avctx->me_cmp);
142  ff_set_cmp(&s->mecc, s->mecc.me_sub_cmp, s->avctx->me_sub_cmp);
143 
144  s->input_picture = av_frame_alloc();
145  if (!s->input_picture)
146  return AVERROR(ENOMEM);
147 
148  if ((ret = ff_snow_get_buffer(s, s->input_picture)) < 0)
149  return ret;
150 
151  if(s->motion_est == FF_ME_ITER){
152  int size= s->b_width * s->b_height << 2*s->block_max_depth;
153  for(i=0; i<s->max_ref_frames; i++){
154  s->ref_mvs[i]= av_mallocz_array(size, sizeof(int16_t[2]));
155  s->ref_scores[i]= av_mallocz_array(size, sizeof(uint32_t));
156  if (!s->ref_mvs[i] || !s->ref_scores[i])
157  return AVERROR(ENOMEM);
158  }
159  }
160 
161  return 0;
162 }
163 
164 //near copy & paste from dsputil, FIXME
165 static int pix_sum(uint8_t * pix, int line_size, int w, int h)
166 {
167  int s, i, j;
168 
169  s = 0;
170  for (i = 0; i < h; i++) {
171  for (j = 0; j < w; j++) {
172  s += pix[0];
173  pix ++;
174  }
175  pix += line_size - w;
176  }
177  return s;
178 }
179 
180 //near copy & paste from dsputil, FIXME
181 static int pix_norm1(uint8_t * pix, int line_size, int w)
182 {
183  int s, i, j;
184  const uint32_t *sq = ff_square_tab + 256;
185 
186  s = 0;
187  for (i = 0; i < w; i++) {
188  for (j = 0; j < w; j ++) {
189  s += sq[pix[0]];
190  pix ++;
191  }
192  pix += line_size - w;
193  }
194  return s;
195 }
196 
197 static inline int get_penalty_factor(int lambda, int lambda2, int type){
198  switch(type&0xFF){
199  default:
200  case FF_CMP_SAD:
201  return lambda>>FF_LAMBDA_SHIFT;
202  case FF_CMP_DCT:
203  return (3*lambda)>>(FF_LAMBDA_SHIFT+1);
204  case FF_CMP_W53:
205  return (4*lambda)>>(FF_LAMBDA_SHIFT);
206  case FF_CMP_W97:
207  return (2*lambda)>>(FF_LAMBDA_SHIFT);
208  case FF_CMP_SATD:
209  case FF_CMP_DCT264:
210  return (2*lambda)>>FF_LAMBDA_SHIFT;
211  case FF_CMP_RD:
212  case FF_CMP_PSNR:
213  case FF_CMP_SSE:
214  case FF_CMP_NSSE:
215  return lambda2>>FF_LAMBDA_SHIFT;
216  case FF_CMP_BIT:
217  return 1;
218  }
219 }
220 
221 //FIXME copy&paste
222 #define P_LEFT P[1]
223 #define P_TOP P[2]
224 #define P_TOPRIGHT P[3]
225 #define P_MEDIAN P[4]
226 #define P_MV1 P[9]
227 #define FLAG_QPEL 1 //must be 1
228 
229 static int encode_q_branch(SnowContext *s, int level, int x, int y){
230  uint8_t p_buffer[1024];
231  uint8_t i_buffer[1024];
232  uint8_t p_state[sizeof(s->block_state)];
233  uint8_t i_state[sizeof(s->block_state)];
234  RangeCoder pc, ic;
235  uint8_t *pbbak= s->c.bytestream;
236  uint8_t *pbbak_start= s->c.bytestream_start;
237  int score, score2, iscore, i_len, p_len, block_s, sum, base_bits;
238  const int w= s->b_width << s->block_max_depth;
239  const int h= s->b_height << s->block_max_depth;
240  const int rem_depth= s->block_max_depth - level;
241  const int index= (x + y*w) << rem_depth;
242  const int block_w= 1<<(LOG2_MB_SIZE - level);
243  int trx= (x+1)<<rem_depth;
244  int try= (y+1)<<rem_depth;
245  const BlockNode *left = x ? &s->block[index-1] : &null_block;
246  const BlockNode *top = y ? &s->block[index-w] : &null_block;
247  const BlockNode *right = trx<w ? &s->block[index+1] : &null_block;
248  const BlockNode *bottom= try<h ? &s->block[index+w] : &null_block;
249  const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
250  const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
251  int pl = left->color[0];
252  int pcb= left->color[1];
253  int pcr= left->color[2];
254  int pmx, pmy;
255  int mx=0, my=0;
256  int l,cr,cb;
257  const int stride= s->current_picture->linesize[0];
258  const int uvstride= s->current_picture->linesize[1];
259  uint8_t *current_data[3]= { s->input_picture->data[0] + (x + y* stride)*block_w,
260  s->input_picture->data[1] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift),
261  s->input_picture->data[2] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift)};
262  int P[10][2];
263  int16_t last_mv[3][2];
264  int qpel= !!(s->avctx->flags & AV_CODEC_FLAG_QPEL); //unused
265  const int shift= 1+qpel;
266  MotionEstContext *c= &s->m.me;
267  int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
268  int mx_context= av_log2(2*FFABS(left->mx - top->mx));
269  int my_context= av_log2(2*FFABS(left->my - top->my));
270  int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
271  int ref, best_ref, ref_score, ref_mx, ref_my;
272  int range = MAX_MV >> (1 + qpel);
273 
274  av_assert0(sizeof(s->block_state) >= 256);
275  if(s->keyframe){
276  set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
277  return 0;
278  }
279 
280 // clip predictors / edge ?
281 
282  P_LEFT[0]= left->mx;
283  P_LEFT[1]= left->my;
284  P_TOP [0]= top->mx;
285  P_TOP [1]= top->my;
286  P_TOPRIGHT[0]= tr->mx;
287  P_TOPRIGHT[1]= tr->my;
288 
289  last_mv[0][0]= s->block[index].mx;
290  last_mv[0][1]= s->block[index].my;
291  last_mv[1][0]= right->mx;
292  last_mv[1][1]= right->my;
293  last_mv[2][0]= bottom->mx;
294  last_mv[2][1]= bottom->my;
295 
296  s->m.mb_stride=2;
297  s->m.mb_x=
298  s->m.mb_y= 0;
299  c->skip= 0;
300 
301  av_assert1(c-> stride == stride);
302  av_assert1(c->uvstride == uvstride);
303 
304  c->penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_cmp);
305  c->sub_penalty_factor= get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_sub_cmp);
306  c->mb_penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->mb_cmp);
307  c->current_mv_penalty= c->mv_penalty[s->m.f_code=1] + MAX_DMV;
308 
309  c->xmin = - x*block_w - 16+3;
310  c->ymin = - y*block_w - 16+3;
311  c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
312  c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
313 
314  c->xmin = FFMAX(c->xmin,-range);
315  c->xmax = FFMIN(c->xmax, range);
316  c->ymin = FFMAX(c->ymin,-range);
317  c->ymax = FFMIN(c->ymax, range);
318 
319  if(P_LEFT[0] > (c->xmax<<shift)) P_LEFT[0] = (c->xmax<<shift);
320  if(P_LEFT[1] > (c->ymax<<shift)) P_LEFT[1] = (c->ymax<<shift);
321  if(P_TOP[0] > (c->xmax<<shift)) P_TOP[0] = (c->xmax<<shift);
322  if(P_TOP[1] > (c->ymax<<shift)) P_TOP[1] = (c->ymax<<shift);
323  if(P_TOPRIGHT[0] < (c->xmin * (1<<shift))) P_TOPRIGHT[0]= (c->xmin * (1<<shift));
324  if(P_TOPRIGHT[0] > (c->xmax<<shift)) P_TOPRIGHT[0]= (c->xmax<<shift); //due to pmx no clip
325  if(P_TOPRIGHT[1] > (c->ymax<<shift)) P_TOPRIGHT[1]= (c->ymax<<shift);
326 
327  P_MEDIAN[0]= mid_pred(P_LEFT[0], P_TOP[0], P_TOPRIGHT[0]);
328  P_MEDIAN[1]= mid_pred(P_LEFT[1], P_TOP[1], P_TOPRIGHT[1]);
329 
330  if (!y) {
331  c->pred_x= P_LEFT[0];
332  c->pred_y= P_LEFT[1];
333  } else {
334  c->pred_x = P_MEDIAN[0];
335  c->pred_y = P_MEDIAN[1];
336  }
337 
338  score= INT_MAX;
339  best_ref= 0;
340  for(ref=0; ref<s->ref_frames; ref++){
341  init_ref(c, current_data, s->last_picture[ref]->data, NULL, block_w*x, block_w*y, 0);
342 
343  ref_score= ff_epzs_motion_search(&s->m, &ref_mx, &ref_my, P, 0, /*ref_index*/ 0, last_mv,
344  (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w);
345 
346  av_assert2(ref_mx >= c->xmin);
347  av_assert2(ref_mx <= c->xmax);
348  av_assert2(ref_my >= c->ymin);
349  av_assert2(ref_my <= c->ymax);
350 
351  ref_score= c->sub_motion_search(&s->m, &ref_mx, &ref_my, ref_score, 0, 0, level-LOG2_MB_SIZE+4, block_w);
352  ref_score= ff_get_mb_score(&s->m, ref_mx, ref_my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0);
353  ref_score+= 2*av_log2(2*ref)*c->penalty_factor;
354  if(s->ref_mvs[ref]){
355  s->ref_mvs[ref][index][0]= ref_mx;
356  s->ref_mvs[ref][index][1]= ref_my;
357  s->ref_scores[ref][index]= ref_score;
358  }
359  if(score > ref_score){
360  score= ref_score;
361  best_ref= ref;
362  mx= ref_mx;
363  my= ref_my;
364  }
365  }
366  //FIXME if mb_cmp != SSE then intra cannot be compared currently and mb_penalty vs. lambda2
367 
368  // subpel search
369  base_bits= get_rac_count(&s->c) - 8*(s->c.bytestream - s->c.bytestream_start);
370  pc= s->c;
371  pc.bytestream_start=
372  pc.bytestream= p_buffer; //FIXME end/start? and at the other stoo
373  memcpy(p_state, s->block_state, sizeof(s->block_state));
374 
375  if(level!=s->block_max_depth)
376  put_rac(&pc, &p_state[4 + s_context], 1);
377  put_rac(&pc, &p_state[1 + left->type + top->type], 0);
378  if(s->ref_frames > 1)
379  put_symbol(&pc, &p_state[128 + 1024 + 32*ref_context], best_ref, 0);
380  pred_mv(s, &pmx, &pmy, best_ref, left, top, tr);
381  put_symbol(&pc, &p_state[128 + 32*(mx_context + 16*!!best_ref)], mx - pmx, 1);
382  put_symbol(&pc, &p_state[128 + 32*(my_context + 16*!!best_ref)], my - pmy, 1);
383  p_len= pc.bytestream - pc.bytestream_start;
384  score += (s->lambda2*(get_rac_count(&pc)-base_bits))>>FF_LAMBDA_SHIFT;
385 
386  block_s= block_w*block_w;
387  sum = pix_sum(current_data[0], stride, block_w, block_w);
388  l= (sum + block_s/2)/block_s;
389  iscore = pix_norm1(current_data[0], stride, block_w) - 2*l*sum + l*l*block_s;
390 
391  if (s->nb_planes > 2) {
392  block_s= block_w*block_w>>(s->chroma_h_shift + s->chroma_v_shift);
393  sum = pix_sum(current_data[1], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
394  cb= (sum + block_s/2)/block_s;
395  // iscore += pix_norm1(&current_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s;
396  sum = pix_sum(current_data[2], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
397  cr= (sum + block_s/2)/block_s;
398  // iscore += pix_norm1(&current_mb[2][0], uvstride, block_w>>1) - 2*cr*sum + cr*cr*block_s;
399  }else
400  cb = cr = 0;
401 
402  ic= s->c;
403  ic.bytestream_start=
404  ic.bytestream= i_buffer; //FIXME end/start? and at the other stoo
405  memcpy(i_state, s->block_state, sizeof(s->block_state));
406  if(level!=s->block_max_depth)
407  put_rac(&ic, &i_state[4 + s_context], 1);
408  put_rac(&ic, &i_state[1 + left->type + top->type], 1);
409  put_symbol(&ic, &i_state[32], l-pl , 1);
410  if (s->nb_planes > 2) {
411  put_symbol(&ic, &i_state[64], cb-pcb, 1);
412  put_symbol(&ic, &i_state[96], cr-pcr, 1);
413  }
414  i_len= ic.bytestream - ic.bytestream_start;
415  iscore += (s->lambda2*(get_rac_count(&ic)-base_bits))>>FF_LAMBDA_SHIFT;
416 
417  av_assert1(iscore < 255*255*256 + s->lambda2*10);
418  av_assert1(iscore >= 0);
419  av_assert1(l>=0 && l<=255);
420  av_assert1(pl>=0 && pl<=255);
421 
422  if(level==0){
423  int varc= iscore >> 8;
424  int vard= score >> 8;
425  if (vard <= 64 || vard < varc)
426  c->scene_change_score+= ff_sqrt(vard) - ff_sqrt(varc);
427  else
428  c->scene_change_score+= s->m.qscale;
429  }
430 
431  if(level!=s->block_max_depth){
432  put_rac(&s->c, &s->block_state[4 + s_context], 0);
433  score2 = encode_q_branch(s, level+1, 2*x+0, 2*y+0);
434  score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+0);
435  score2+= encode_q_branch(s, level+1, 2*x+0, 2*y+1);
436  score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+1);
437  score2+= s->lambda2>>FF_LAMBDA_SHIFT; //FIXME exact split overhead
438 
439  if(score2 < score && score2 < iscore)
440  return score2;
441  }
442 
443  if(iscore < score){
444  pred_mv(s, &pmx, &pmy, 0, left, top, tr);
445  memcpy(pbbak, i_buffer, i_len);
446  s->c= ic;
447  s->c.bytestream_start= pbbak_start;
448  s->c.bytestream= pbbak + i_len;
449  set_blocks(s, level, x, y, l, cb, cr, pmx, pmy, 0, BLOCK_INTRA);
450  memcpy(s->block_state, i_state, sizeof(s->block_state));
451  return iscore;
452  }else{
453  memcpy(pbbak, p_buffer, p_len);
454  s->c= pc;
455  s->c.bytestream_start= pbbak_start;
456  s->c.bytestream= pbbak + p_len;
457  set_blocks(s, level, x, y, pl, pcb, pcr, mx, my, best_ref, 0);
458  memcpy(s->block_state, p_state, sizeof(s->block_state));
459  return score;
460  }
461 }
462 
463 static void encode_q_branch2(SnowContext *s, int level, int x, int y){
464  const int w= s->b_width << s->block_max_depth;
465  const int rem_depth= s->block_max_depth - level;
466  const int index= (x + y*w) << rem_depth;
467  int trx= (x+1)<<rem_depth;
468  BlockNode *b= &s->block[index];
469  const BlockNode *left = x ? &s->block[index-1] : &null_block;
470  const BlockNode *top = y ? &s->block[index-w] : &null_block;
471  const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
472  const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
473  int pl = left->color[0];
474  int pcb= left->color[1];
475  int pcr= left->color[2];
476  int pmx, pmy;
477  int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
478  int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 16*!!b->ref;
479  int my_context= av_log2(2*FFABS(left->my - top->my)) + 16*!!b->ref;
480  int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
481 
482  if(s->keyframe){
483  set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
484  return;
485  }
486 
487  if(level!=s->block_max_depth){
488  if(same_block(b,b+1) && same_block(b,b+w) && same_block(b,b+w+1)){
489  put_rac(&s->c, &s->block_state[4 + s_context], 1);
490  }else{
491  put_rac(&s->c, &s->block_state[4 + s_context], 0);
492  encode_q_branch2(s, level+1, 2*x+0, 2*y+0);
493  encode_q_branch2(s, level+1, 2*x+1, 2*y+0);
494  encode_q_branch2(s, level+1, 2*x+0, 2*y+1);
495  encode_q_branch2(s, level+1, 2*x+1, 2*y+1);
496  return;
497  }
498  }
499  if(b->type & BLOCK_INTRA){
500  pred_mv(s, &pmx, &pmy, 0, left, top, tr);
501  put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 1);
502  put_symbol(&s->c, &s->block_state[32], b->color[0]-pl , 1);
503  if (s->nb_planes > 2) {
504  put_symbol(&s->c, &s->block_state[64], b->color[1]-pcb, 1);
505  put_symbol(&s->c, &s->block_state[96], b->color[2]-pcr, 1);
506  }
507  set_blocks(s, level, x, y, b->color[0], b->color[1], b->color[2], pmx, pmy, 0, BLOCK_INTRA);
508  }else{
509  pred_mv(s, &pmx, &pmy, b->ref, left, top, tr);
510  put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 0);
511  if(s->ref_frames > 1)
512  put_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], b->ref, 0);
513  put_symbol(&s->c, &s->block_state[128 + 32*mx_context], b->mx - pmx, 1);
514  put_symbol(&s->c, &s->block_state[128 + 32*my_context], b->my - pmy, 1);
515  set_blocks(s, level, x, y, pl, pcb, pcr, b->mx, b->my, b->ref, 0);
516  }
517 }
518 
519 static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){
520  int i, x2, y2;
521  Plane *p= &s->plane[plane_index];
522  const int block_size = MB_SIZE >> s->block_max_depth;
523  const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
524  const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
525  const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
526  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
527  const int ref_stride= s->current_picture->linesize[plane_index];
528  uint8_t *src= s-> input_picture->data[plane_index];
529  IDWTELEM *dst= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4; //FIXME change to unsigned
530  const int b_stride = s->b_width << s->block_max_depth;
531  const int w= p->width;
532  const int h= p->height;
533  int index= mb_x + mb_y*b_stride;
534  BlockNode *b= &s->block[index];
535  BlockNode backup= *b;
536  int ab=0;
537  int aa=0;
538 
539  av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc stuff above
540 
541  b->type|= BLOCK_INTRA;
542  b->color[plane_index]= 0;
543  memset(dst, 0, obmc_stride*obmc_stride*sizeof(IDWTELEM));
544 
545  for(i=0; i<4; i++){
546  int mb_x2= mb_x + (i &1) - 1;
547  int mb_y2= mb_y + (i>>1) - 1;
548  int x= block_w*mb_x2 + block_w/2;
549  int y= block_h*mb_y2 + block_h/2;
550 
551  add_yblock(s, 0, NULL, dst + (i&1)*block_w + (i>>1)*obmc_stride*block_h, NULL, obmc,
552  x, y, block_w, block_h, w, h, obmc_stride, ref_stride, obmc_stride, mb_x2, mb_y2, 0, 0, plane_index);
553 
554  for(y2= FFMAX(y, 0); y2<FFMIN(h, y+block_h); y2++){
555  for(x2= FFMAX(x, 0); x2<FFMIN(w, x+block_w); x2++){
556  int col= x2-(block_w*mb_x - block_w/2);
557  int row= y2-(block_h*mb_y - block_h/2);
558  int index= col + row*obmc_stride;
559  int obmc_v= obmc[index];
560  int d;
561  if(y<0) obmc_v += obmc[index + block_h*obmc_stride];
562  if(x<0) obmc_v += obmc[index + block_w];
563  if(y+block_h>h && row-block_h >= 0) obmc_v += obmc[index - block_h*obmc_stride];
564  if(x+block_w>w && col-block_w >= 0) obmc_v += obmc[index - block_w];
565  //FIXME precalculate this or simplify it somehow else
566 
567  d = -dst[index] + (1<<(FRAC_BITS-1));
568  dst[index] = d;
569  ab += (src[x2 + y2*ref_stride] - (d>>FRAC_BITS)) * obmc_v;
570  aa += obmc_v * obmc_v; //FIXME precalculate this
571  }
572  }
573  }
574  *b= backup;
575 
576  if (!aa)
577  return 0;
578 
579  return av_clip_uint8( ROUNDED_DIV(ab<<LOG2_OBMC_MAX, aa) ); //FIXME we should not need clipping
580 }
581 
582 static inline int get_block_bits(SnowContext *s, int x, int y, int w){
583  const int b_stride = s->b_width << s->block_max_depth;
584  const int b_height = s->b_height<< s->block_max_depth;
585  int index= x + y*b_stride;
586  const BlockNode *b = &s->block[index];
587  const BlockNode *left = x ? &s->block[index-1] : &null_block;
588  const BlockNode *top = y ? &s->block[index-b_stride] : &null_block;
589  const BlockNode *tl = y && x ? &s->block[index-b_stride-1] : left;
590  const BlockNode *tr = y && x+w<b_stride ? &s->block[index-b_stride+w] : tl;
591  int dmx, dmy;
592 // int mx_context= av_log2(2*FFABS(left->mx - top->mx));
593 // int my_context= av_log2(2*FFABS(left->my - top->my));
594 
595  if(x<0 || x>=b_stride || y>=b_height)
596  return 0;
597 /*
598 1 0 0
599 01X 1-2 1
600 001XX 3-6 2-3
601 0001XXX 7-14 4-7
602 00001XXXX 15-30 8-15
603 */
604 //FIXME try accurate rate
605 //FIXME intra and inter predictors if surrounding blocks are not the same type
606  if(b->type & BLOCK_INTRA){
607  return 3+2*( av_log2(2*FFABS(left->color[0] - b->color[0]))
608  + av_log2(2*FFABS(left->color[1] - b->color[1]))
609  + av_log2(2*FFABS(left->color[2] - b->color[2])));
610  }else{
611  pred_mv(s, &dmx, &dmy, b->ref, left, top, tr);
612  dmx-= b->mx;
613  dmy-= b->my;
614  return 2*(1 + av_log2(2*FFABS(dmx)) //FIXME kill the 2* can be merged in lambda
615  + av_log2(2*FFABS(dmy))
616  + av_log2(2*b->ref));
617  }
618 }
619 
620 static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, uint8_t (*obmc_edged)[MB_SIZE * 2]){
621  Plane *p= &s->plane[plane_index];
622  const int block_size = MB_SIZE >> s->block_max_depth;
623  const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
624  const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
625  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
626  const int ref_stride= s->current_picture->linesize[plane_index];
627  uint8_t *dst= s->current_picture->data[plane_index];
628  uint8_t *src= s-> input_picture->data[plane_index];
629  IDWTELEM *pred= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4;
630  uint8_t *cur = s->scratchbuf;
631  uint8_t *tmp = s->emu_edge_buffer;
632  const int b_stride = s->b_width << s->block_max_depth;
633  const int b_height = s->b_height<< s->block_max_depth;
634  const int w= p->width;
635  const int h= p->height;
636  int distortion;
637  int rate= 0;
638  const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
639  int sx= block_w*mb_x - block_w/2;
640  int sy= block_h*mb_y - block_h/2;
641  int x0= FFMAX(0,-sx);
642  int y0= FFMAX(0,-sy);
643  int x1= FFMIN(block_w*2, w-sx);
644  int y1= FFMIN(block_h*2, h-sy);
645  int i,x,y;
646 
647  av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below chckinhg only block_w
648 
649  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);
650 
651  for(y=y0; y<y1; y++){
652  const uint8_t *obmc1= obmc_edged[y];
653  const IDWTELEM *pred1 = pred + y*obmc_stride;
654  uint8_t *cur1 = cur + y*ref_stride;
655  uint8_t *dst1 = dst + sx + (sy+y)*ref_stride;
656  for(x=x0; x<x1; x++){
657 #if FRAC_BITS >= LOG2_OBMC_MAX
658  int v = (cur1[x] * obmc1[x]) << (FRAC_BITS - LOG2_OBMC_MAX);
659 #else
660  int v = (cur1[x] * obmc1[x] + (1<<(LOG2_OBMC_MAX - FRAC_BITS-1))) >> (LOG2_OBMC_MAX - FRAC_BITS);
661 #endif
662  v = (v + pred1[x]) >> FRAC_BITS;
663  if(v&(~255)) v= ~(v>>31);
664  dst1[x] = v;
665  }
666  }
667 
668  /* copy the regions where obmc[] = (uint8_t)256 */
669  if(LOG2_OBMC_MAX == 8
670  && (mb_x == 0 || mb_x == b_stride-1)
671  && (mb_y == 0 || mb_y == b_height-1)){
672  if(mb_x == 0)
673  x1 = FFMIN(x1, block_w);
674  else
675  x0 = FFMAX(x0, block_w);
676  if(mb_y == 0)
677  y1 = FFMIN(y1, block_h);
678  else
679  y0 = FFMAX(y0, block_h);
680  x0 = FFMIN(x0, x1);
681  for(y=y0; y<y1; y++)
682  memcpy(dst + sx+x0 + (sy+y)*ref_stride, cur + x0 + y*ref_stride, x1-x0);
683  }
684 
685  if(block_w==16){
686  /* FIXME rearrange dsputil to fit 32x32 cmp functions */
687  /* FIXME check alignment of the cmp wavelet vs the encoding wavelet */
688  /* FIXME cmps overlap but do not cover the wavelet's whole support.
689  * So improving the score of one block is not strictly guaranteed
690  * to improve the score of the whole frame, thus iterative motion
691  * estimation does not always converge. */
692  if(s->avctx->me_cmp == FF_CMP_W97)
693  distortion = ff_w97_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
694  else if(s->avctx->me_cmp == FF_CMP_W53)
695  distortion = ff_w53_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
696  else{
697  distortion = 0;
698  for(i=0; i<4; i++){
699  int off = sx+16*(i&1) + (sy+16*(i>>1))*ref_stride;
700  distortion += s->mecc.me_cmp[0](&s->m, src + off, dst + off, ref_stride, 16);
701  }
702  }
703  }else{
704  av_assert2(block_w==8);
705  distortion = s->mecc.me_cmp[0](&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, block_w*2);
706  }
707 
708  if(plane_index==0){
709  for(i=0; i<4; i++){
710 /* ..RRr
711  * .RXx.
712  * rxx..
713  */
714  rate += get_block_bits(s, mb_x + (i&1) - (i>>1), mb_y + (i>>1), 1);
715  }
716  if(mb_x == b_stride-2)
717  rate += get_block_bits(s, mb_x + 1, mb_y + 1, 1);
718  }
719  return distortion + rate*penalty_factor;
720 }
721 
722 static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){
723  int i, y2;
724  Plane *p= &s->plane[plane_index];
725  const int block_size = MB_SIZE >> s->block_max_depth;
726  const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
727  const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
728  const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
729  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
730  const int ref_stride= s->current_picture->linesize[plane_index];
731  uint8_t *dst= s->current_picture->data[plane_index];
732  uint8_t *src= s-> input_picture->data[plane_index];
733  //FIXME zero_dst is const but add_yblock changes dst if add is 0 (this is never the case for dst=zero_dst
734  // const has only been removed from zero_dst to suppress a warning
735  static IDWTELEM zero_dst[4096]; //FIXME
736  const int b_stride = s->b_width << s->block_max_depth;
737  const int w= p->width;
738  const int h= p->height;
739  int distortion= 0;
740  int rate= 0;
741  const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
742 
743  av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below
744 
745  for(i=0; i<9; i++){
746  int mb_x2= mb_x + (i%3) - 1;
747  int mb_y2= mb_y + (i/3) - 1;
748  int x= block_w*mb_x2 + block_w/2;
749  int y= block_h*mb_y2 + block_h/2;
750 
751  add_yblock(s, 0, NULL, zero_dst, dst, obmc,
752  x, y, block_w, block_h, w, h, /*dst_stride*/0, ref_stride, obmc_stride, mb_x2, mb_y2, 1, 1, plane_index);
753 
754  //FIXME find a cleaner/simpler way to skip the outside stuff
755  for(y2= y; y2<0; y2++)
756  memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
757  for(y2= h; y2<y+block_h; y2++)
758  memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
759  if(x<0){
760  for(y2= y; y2<y+block_h; y2++)
761  memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, -x);
762  }
763  if(x+block_w > w){
764  for(y2= y; y2<y+block_h; y2++)
765  memcpy(dst + w + y2*ref_stride, src + w + y2*ref_stride, x+block_w - w);
766  }
767 
768  av_assert1(block_w== 8 || block_w==16);
769  distortion += s->mecc.me_cmp[block_w==8](&s->m, src + x + y*ref_stride, dst + x + y*ref_stride, ref_stride, block_h);
770  }
771 
772  if(plane_index==0){
773  BlockNode *b= &s->block[mb_x+mb_y*b_stride];
774  int merged= same_block(b,b+1) && same_block(b,b+b_stride) && same_block(b,b+b_stride+1);
775 
776 /* ..RRRr
777  * .RXXx.
778  * .RXXx.
779  * rxxx.
780  */
781  if(merged)
782  rate = get_block_bits(s, mb_x, mb_y, 2);
783  for(i=merged?4:0; i<9; i++){
784  static const int dxy[9][2] = {{0,0},{1,0},{0,1},{1,1},{2,0},{2,1},{-1,2},{0,2},{1,2}};
785  rate += get_block_bits(s, mb_x + dxy[i][0], mb_y + dxy[i][1], 1);
786  }
787  }
788  return distortion + rate*penalty_factor;
789 }
790 
791 static int encode_subband_c0run(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
792  const int w= b->width;
793  const int h= b->height;
794  int x, y;
795 
796  if(1){
797  int run=0;
798  int *runs = s->run_buffer;
799  int run_index=0;
800  int max_index;
801 
802  for(y=0; y<h; y++){
803  for(x=0; x<w; x++){
804  int v, p=0;
805  int /*ll=0, */l=0, lt=0, t=0, rt=0;
806  v= src[x + y*stride];
807 
808  if(y){
809  t= src[x + (y-1)*stride];
810  if(x){
811  lt= src[x - 1 + (y-1)*stride];
812  }
813  if(x + 1 < w){
814  rt= src[x + 1 + (y-1)*stride];
815  }
816  }
817  if(x){
818  l= src[x - 1 + y*stride];
819  /*if(x > 1){
820  if(orientation==1) ll= src[y + (x-2)*stride];
821  else ll= src[x - 2 + y*stride];
822  }*/
823  }
824  if(parent){
825  int px= x>>1;
826  int py= y>>1;
827  if(px<b->parent->width && py<b->parent->height)
828  p= parent[px + py*2*stride];
829  }
830  if(!(/*ll|*/l|lt|t|rt|p)){
831  if(v){
832  runs[run_index++]= run;
833  run=0;
834  }else{
835  run++;
836  }
837  }
838  }
839  }
840  max_index= run_index;
841  runs[run_index++]= run;
842  run_index=0;
843  run= runs[run_index++];
844 
845  put_symbol2(&s->c, b->state[30], max_index, 0);
846  if(run_index <= max_index)
847  put_symbol2(&s->c, b->state[1], run, 3);
848 
849  for(y=0; y<h; y++){
850  if(s->c.bytestream_end - s->c.bytestream < w*40){
851  av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
852  return AVERROR(ENOMEM);
853  }
854  for(x=0; x<w; x++){
855  int v, p=0;
856  int /*ll=0, */l=0, lt=0, t=0, rt=0;
857  v= src[x + y*stride];
858 
859  if(y){
860  t= src[x + (y-1)*stride];
861  if(x){
862  lt= src[x - 1 + (y-1)*stride];
863  }
864  if(x + 1 < w){
865  rt= src[x + 1 + (y-1)*stride];
866  }
867  }
868  if(x){
869  l= src[x - 1 + y*stride];
870  /*if(x > 1){
871  if(orientation==1) ll= src[y + (x-2)*stride];
872  else ll= src[x - 2 + y*stride];
873  }*/
874  }
875  if(parent){
876  int px= x>>1;
877  int py= y>>1;
878  if(px<b->parent->width && py<b->parent->height)
879  p= parent[px + py*2*stride];
880  }
881  if(/*ll|*/l|lt|t|rt|p){
882  int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
883 
884  put_rac(&s->c, &b->state[0][context], !!v);
885  }else{
886  if(!run){
887  run= runs[run_index++];
888 
889  if(run_index <= max_index)
890  put_symbol2(&s->c, b->state[1], run, 3);
891  av_assert2(v);
892  }else{
893  run--;
894  av_assert2(!v);
895  }
896  }
897  if(v){
898  int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
899  int l2= 2*FFABS(l) + (l<0);
900  int t2= 2*FFABS(t) + (t<0);
901 
902  put_symbol2(&s->c, b->state[context + 2], FFABS(v)-1, context-4);
903  put_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l2&0xFF] + 3*ff_quant3bA[t2&0xFF]], v<0);
904  }
905  }
906  }
907  }
908  return 0;
909 }
910 
911 static int encode_subband(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
912 // encode_subband_qtree(s, b, src, parent, stride, orientation);
913 // encode_subband_z0run(s, b, src, parent, stride, orientation);
914  return encode_subband_c0run(s, b, src, parent, stride, orientation);
915 // encode_subband_dzr(s, b, src, parent, stride, orientation);
916 }
917 
918 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){
919  const int b_stride= s->b_width << s->block_max_depth;
920  BlockNode *block= &s->block[mb_x + mb_y * b_stride];
921  BlockNode backup= *block;
922  unsigned value;
923  int rd, index;
924 
925  av_assert2(mb_x>=0 && mb_y>=0);
926  av_assert2(mb_x<b_stride);
927 
928  if(intra){
929  block->color[0] = p[0];
930  block->color[1] = p[1];
931  block->color[2] = p[2];
932  block->type |= BLOCK_INTRA;
933  }else{
934  index= (p[0] + 31*p[1]) & (ME_CACHE_SIZE-1);
935  value= s->me_cache_generation + (p[0]>>10) + (p[1]<<6) + (block->ref<<12);
936  if(s->me_cache[index] == value)
937  return 0;
938  s->me_cache[index]= value;
939 
940  block->mx= p[0];
941  block->my= p[1];
942  block->type &= ~BLOCK_INTRA;
943  }
944 
945  rd= get_block_rd(s, mb_x, mb_y, 0, obmc_edged) + s->intra_penalty * !!intra;
946 
947 //FIXME chroma
948  if(rd < *best_rd){
949  *best_rd= rd;
950  return 1;
951  }else{
952  *block= backup;
953  return 0;
954  }
955 }
956 
957 /* special case for int[2] args we discard afterwards,
958  * fixes compilation problem with gcc 2.95 */
959 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){
960  int p[2] = {p0, p1};
961  return check_block(s, mb_x, mb_y, p, 0, obmc_edged, best_rd);
962 }
963 
964 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){
965  const int b_stride= s->b_width << s->block_max_depth;
966  BlockNode *block= &s->block[mb_x + mb_y * b_stride];
967  BlockNode backup[4];
968  unsigned value;
969  int rd, index;
970 
971  /* We don't initialize backup[] during variable declaration, because
972  * that fails to compile on MSVC: "cannot convert from 'BlockNode' to
973  * 'int16_t'". */
974  backup[0] = block[0];
975  backup[1] = block[1];
976  backup[2] = block[b_stride];
977  backup[3] = block[b_stride + 1];
978 
979  av_assert2(mb_x>=0 && mb_y>=0);
980  av_assert2(mb_x<b_stride);
981  av_assert2(((mb_x|mb_y)&1) == 0);
982 
983  index= (p0 + 31*p1) & (ME_CACHE_SIZE-1);
984  value= s->me_cache_generation + (p0>>10) + (p1<<6) + (block->ref<<12);
985  if(s->me_cache[index] == value)
986  return 0;
987  s->me_cache[index]= value;
988 
989  block->mx= p0;
990  block->my= p1;
991  block->ref= ref;
992  block->type &= ~BLOCK_INTRA;
993  block[1]= block[b_stride]= block[b_stride+1]= *block;
994 
995  rd= get_4block_rd(s, mb_x, mb_y, 0);
996 
997 //FIXME chroma
998  if(rd < *best_rd){
999  *best_rd= rd;
1000  return 1;
1001  }else{
1002  block[0]= backup[0];
1003  block[1]= backup[1];
1004  block[b_stride]= backup[2];
1005  block[b_stride+1]= backup[3];
1006  return 0;
1007  }
1008 }
1009 
1010 static void iterative_me(SnowContext *s){
1011  int pass, mb_x, mb_y;
1012  const int b_width = s->b_width << s->block_max_depth;
1013  const int b_height= s->b_height << s->block_max_depth;
1014  const int b_stride= b_width;
1015  int color[3];
1016 
1017  {
1018  RangeCoder r = s->c;
1019  uint8_t state[sizeof(s->block_state)];
1020  memcpy(state, s->block_state, sizeof(s->block_state));
1021  for(mb_y= 0; mb_y<s->b_height; mb_y++)
1022  for(mb_x= 0; mb_x<s->b_width; mb_x++)
1023  encode_q_branch(s, 0, mb_x, mb_y);
1024  s->c = r;
1025  memcpy(s->block_state, state, sizeof(s->block_state));
1026  }
1027 
1028  for(pass=0; pass<25; pass++){
1029  int change= 0;
1030 
1031  for(mb_y= 0; mb_y<b_height; mb_y++){
1032  for(mb_x= 0; mb_x<b_width; mb_x++){
1033  int dia_change, i, j, ref;
1034  int best_rd= INT_MAX, ref_rd;
1035  BlockNode backup, ref_b;
1036  const int index= mb_x + mb_y * b_stride;
1037  BlockNode *block= &s->block[index];
1038  BlockNode *tb = mb_y ? &s->block[index-b_stride ] : NULL;
1039  BlockNode *lb = mb_x ? &s->block[index -1] : NULL;
1040  BlockNode *rb = mb_x+1<b_width ? &s->block[index +1] : NULL;
1041  BlockNode *bb = mb_y+1<b_height ? &s->block[index+b_stride ] : NULL;
1042  BlockNode *tlb= mb_x && mb_y ? &s->block[index-b_stride-1] : NULL;
1043  BlockNode *trb= mb_x+1<b_width && mb_y ? &s->block[index-b_stride+1] : NULL;
1044  BlockNode *blb= mb_x && mb_y+1<b_height ? &s->block[index+b_stride-1] : NULL;
1045  BlockNode *brb= mb_x+1<b_width && mb_y+1<b_height ? &s->block[index+b_stride+1] : NULL;
1046  const int b_w= (MB_SIZE >> s->block_max_depth);
1047  uint8_t obmc_edged[MB_SIZE * 2][MB_SIZE * 2];
1048 
1049  if(pass && (block->type & BLOCK_OPT))
1050  continue;
1051  block->type |= BLOCK_OPT;
1052 
1053  backup= *block;
1054 
1055  if(!s->me_cache_generation)
1056  memset(s->me_cache, 0, sizeof(s->me_cache));
1057  s->me_cache_generation += 1<<22;
1058 
1059  //FIXME precalculate
1060  {
1061  int x, y;
1062  for (y = 0; y < b_w * 2; y++)
1063  memcpy(obmc_edged[y], ff_obmc_tab[s->block_max_depth] + y * b_w * 2, b_w * 2);
1064  if(mb_x==0)
1065  for(y=0; y<b_w*2; y++)
1066  memset(obmc_edged[y], obmc_edged[y][0] + obmc_edged[y][b_w-1], b_w);
1067  if(mb_x==b_stride-1)
1068  for(y=0; y<b_w*2; y++)
1069  memset(obmc_edged[y]+b_w, obmc_edged[y][b_w] + obmc_edged[y][b_w*2-1], b_w);
1070  if(mb_y==0){
1071  for(x=0; x<b_w*2; x++)
1072  obmc_edged[0][x] += obmc_edged[b_w-1][x];
1073  for(y=1; y<b_w; y++)
1074  memcpy(obmc_edged[y], obmc_edged[0], b_w*2);
1075  }
1076  if(mb_y==b_height-1){
1077  for(x=0; x<b_w*2; x++)
1078  obmc_edged[b_w*2-1][x] += obmc_edged[b_w][x];
1079  for(y=b_w; y<b_w*2-1; y++)
1080  memcpy(obmc_edged[y], obmc_edged[b_w*2-1], b_w*2);
1081  }
1082  }
1083 
1084  //skip stuff outside the picture
1085  if(mb_x==0 || mb_y==0 || mb_x==b_width-1 || mb_y==b_height-1){
1086  uint8_t *src= s-> input_picture->data[0];
1087  uint8_t *dst= s->current_picture->data[0];
1088  const int stride= s->current_picture->linesize[0];
1089  const int block_w= MB_SIZE >> s->block_max_depth;
1090  const int block_h= MB_SIZE >> s->block_max_depth;
1091  const int sx= block_w*mb_x - block_w/2;
1092  const int sy= block_h*mb_y - block_h/2;
1093  const int w= s->plane[0].width;
1094  const int h= s->plane[0].height;
1095  int y;
1096 
1097  for(y=sy; y<0; y++)
1098  memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1099  for(y=h; y<sy+block_h*2; y++)
1100  memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1101  if(sx<0){
1102  for(y=sy; y<sy+block_h*2; y++)
1103  memcpy(dst + sx + y*stride, src + sx + y*stride, -sx);
1104  }
1105  if(sx+block_w*2 > w){
1106  for(y=sy; y<sy+block_h*2; y++)
1107  memcpy(dst + w + y*stride, src + w + y*stride, sx+block_w*2 - w);
1108  }
1109  }
1110 
1111  // intra(black) = neighbors' contribution to the current block
1112  for(i=0; i < s->nb_planes; i++)
1113  color[i]= get_dc(s, mb_x, mb_y, i);
1114 
1115  // get previous score (cannot be cached due to OBMC)
1116  if(pass > 0 && (block->type&BLOCK_INTRA)){
1117  int color0[3]= {block->color[0], block->color[1], block->color[2]};
1118  check_block(s, mb_x, mb_y, color0, 1, obmc_edged, &best_rd);
1119  }else
1120  check_block_inter(s, mb_x, mb_y, block->mx, block->my, obmc_edged, &best_rd);
1121 
1122  ref_b= *block;
1123  ref_rd= best_rd;
1124  for(ref=0; ref < s->ref_frames; ref++){
1125  int16_t (*mvr)[2]= &s->ref_mvs[ref][index];
1126  if(s->ref_scores[ref][index] > s->ref_scores[ref_b.ref][index]*3/2) //FIXME tune threshold
1127  continue;
1128  block->ref= ref;
1129  best_rd= INT_MAX;
1130 
1131  check_block_inter(s, mb_x, mb_y, mvr[0][0], mvr[0][1], obmc_edged, &best_rd);
1132  check_block_inter(s, mb_x, mb_y, 0, 0, obmc_edged, &best_rd);
1133  if(tb)
1134  check_block_inter(s, mb_x, mb_y, mvr[-b_stride][0], mvr[-b_stride][1], obmc_edged, &best_rd);
1135  if(lb)
1136  check_block_inter(s, mb_x, mb_y, mvr[-1][0], mvr[-1][1], obmc_edged, &best_rd);
1137  if(rb)
1138  check_block_inter(s, mb_x, mb_y, mvr[1][0], mvr[1][1], obmc_edged, &best_rd);
1139  if(bb)
1140  check_block_inter(s, mb_x, mb_y, mvr[b_stride][0], mvr[b_stride][1], obmc_edged, &best_rd);
1141 
1142  /* fullpel ME */
1143  //FIXME avoid subpel interpolation / round to nearest integer
1144  do{
1145  int newx = block->mx;
1146  int newy = block->my;
1147  int dia_size = s->iterative_dia_size ? s->iterative_dia_size : FFMAX(s->avctx->dia_size, 1);
1148  dia_change=0;
1149  for(i=0; i < dia_size; i++){
1150  for(j=0; j<i; j++){
1151  dia_change |= check_block_inter(s, mb_x, mb_y, newx+4*(i-j), newy+(4*j), obmc_edged, &best_rd);
1152  dia_change |= check_block_inter(s, mb_x, mb_y, newx-4*(i-j), newy-(4*j), obmc_edged, &best_rd);
1153  dia_change |= check_block_inter(s, mb_x, mb_y, newx-(4*j), newy+4*(i-j), obmc_edged, &best_rd);
1154  dia_change |= check_block_inter(s, mb_x, mb_y, newx+(4*j), newy-4*(i-j), obmc_edged, &best_rd);
1155  }
1156  }
1157  }while(dia_change);
1158  /* subpel ME */
1159  do{
1160  static const int square[8][2]= {{+1, 0},{-1, 0},{ 0,+1},{ 0,-1},{+1,+1},{-1,-1},{+1,-1},{-1,+1},};
1161  dia_change=0;
1162  for(i=0; i<8; i++)
1163  dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+square[i][0], block->my+square[i][1], obmc_edged, &best_rd);
1164  }while(dia_change);
1165  //FIXME or try the standard 2 pass qpel or similar
1166 
1167  mvr[0][0]= block->mx;
1168  mvr[0][1]= block->my;
1169  if(ref_rd > best_rd){
1170  ref_rd= best_rd;
1171  ref_b= *block;
1172  }
1173  }
1174  best_rd= ref_rd;
1175  *block= ref_b;
1176  check_block(s, mb_x, mb_y, color, 1, obmc_edged, &best_rd);
1177  //FIXME RD style color selection
1178  if(!same_block(block, &backup)){
1179  if(tb ) tb ->type &= ~BLOCK_OPT;
1180  if(lb ) lb ->type &= ~BLOCK_OPT;
1181  if(rb ) rb ->type &= ~BLOCK_OPT;
1182  if(bb ) bb ->type &= ~BLOCK_OPT;
1183  if(tlb) tlb->type &= ~BLOCK_OPT;
1184  if(trb) trb->type &= ~BLOCK_OPT;
1185  if(blb) blb->type &= ~BLOCK_OPT;
1186  if(brb) brb->type &= ~BLOCK_OPT;
1187  change ++;
1188  }
1189  }
1190  }
1191  av_log(s->avctx, AV_LOG_DEBUG, "pass:%d changed:%d\n", pass, change);
1192  if(!change)
1193  break;
1194  }
1195 
1196  if(s->block_max_depth == 1){
1197  int change= 0;
1198  for(mb_y= 0; mb_y<b_height; mb_y+=2){
1199  for(mb_x= 0; mb_x<b_width; mb_x+=2){
1200  int i;
1201  int best_rd, init_rd;
1202  const int index= mb_x + mb_y * b_stride;
1203  BlockNode *b[4];
1204 
1205  b[0]= &s->block[index];
1206  b[1]= b[0]+1;
1207  b[2]= b[0]+b_stride;
1208  b[3]= b[2]+1;
1209  if(same_block(b[0], b[1]) &&
1210  same_block(b[0], b[2]) &&
1211  same_block(b[0], b[3]))
1212  continue;
1213 
1214  if(!s->me_cache_generation)
1215  memset(s->me_cache, 0, sizeof(s->me_cache));
1216  s->me_cache_generation += 1<<22;
1217 
1218  init_rd= best_rd= get_4block_rd(s, mb_x, mb_y, 0);
1219 
1220  //FIXME more multiref search?
1221  check_4block_inter(s, mb_x, mb_y,
1222  (b[0]->mx + b[1]->mx + b[2]->mx + b[3]->mx + 2) >> 2,
1223  (b[0]->my + b[1]->my + b[2]->my + b[3]->my + 2) >> 2, 0, &best_rd);
1224 
1225  for(i=0; i<4; i++)
1226  if(!(b[i]->type&BLOCK_INTRA))
1227  check_4block_inter(s, mb_x, mb_y, b[i]->mx, b[i]->my, b[i]->ref, &best_rd);
1228 
1229  if(init_rd != best_rd)
1230  change++;
1231  }
1232  }
1233  av_log(s->avctx, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4);
1234  }
1235 }
1236 
1237 static void encode_blocks(SnowContext *s, int search){
1238  int x, y;
1239  int w= s->b_width;
1240  int h= s->b_height;
1241 
1242  if(s->motion_est == FF_ME_ITER && !s->keyframe && search)
1243  iterative_me(s);
1244 
1245  for(y=0; y<h; y++){
1246  if(s->c.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit
1247  av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
1248  return;
1249  }
1250  for(x=0; x<w; x++){
1251  if(s->motion_est == FF_ME_ITER || !search)
1252  encode_q_branch2(s, 0, x, y);
1253  else
1254  encode_q_branch (s, 0, x, y);
1255  }
1256  }
1257 }
1258 
1259 static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias){
1260  const int w= b->width;
1261  const int h= b->height;
1262  const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1263  const int qmul= ff_qexp[qlog&(QROOT-1)]<<((qlog>>QSHIFT) + ENCODER_EXTRA_BITS);
1264  int x,y, thres1, thres2;
1265 
1266  if(s->qlog == LOSSLESS_QLOG){
1267  for(y=0; y<h; y++)
1268  for(x=0; x<w; x++)
1269  dst[x + y*stride]= src[x + y*stride];
1270  return;
1271  }
1272 
1273  bias= bias ? 0 : (3*qmul)>>3;
1274  thres1= ((qmul - bias)>>QEXPSHIFT) - 1;
1275  thres2= 2*thres1;
1276 
1277  if(!bias){
1278  for(y=0; y<h; y++){
1279  for(x=0; x<w; x++){
1280  int i= src[x + y*stride];
1281 
1282  if((unsigned)(i+thres1) > thres2){
1283  if(i>=0){
1284  i<<= QEXPSHIFT;
1285  i/= qmul; //FIXME optimize
1286  dst[x + y*stride]= i;
1287  }else{
1288  i= -i;
1289  i<<= QEXPSHIFT;
1290  i/= qmul; //FIXME optimize
1291  dst[x + y*stride]= -i;
1292  }
1293  }else
1294  dst[x + y*stride]= 0;
1295  }
1296  }
1297  }else{
1298  for(y=0; y<h; y++){
1299  for(x=0; x<w; x++){
1300  int i= src[x + y*stride];
1301 
1302  if((unsigned)(i+thres1) > thres2){
1303  if(i>=0){
1304  i<<= QEXPSHIFT;
1305  i= (i + bias) / qmul; //FIXME optimize
1306  dst[x + y*stride]= i;
1307  }else{
1308  i= -i;
1309  i<<= QEXPSHIFT;
1310  i= (i + bias) / qmul; //FIXME optimize
1311  dst[x + y*stride]= -i;
1312  }
1313  }else
1314  dst[x + y*stride]= 0;
1315  }
1316  }
1317  }
1318 }
1319 
1320 static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride){
1321  const int w= b->width;
1322  const int h= b->height;
1323  const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1324  const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1325  const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
1326  int x,y;
1327 
1328  if(s->qlog == LOSSLESS_QLOG) return;
1329 
1330  for(y=0; y<h; y++){
1331  for(x=0; x<w; x++){
1332  int i= src[x + y*stride];
1333  if(i<0){
1334  src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias
1335  }else if(i>0){
1336  src[x + y*stride]= (( i*qmul + qadd)>>(QEXPSHIFT));
1337  }
1338  }
1339  }
1340 }
1341 
1342 static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1343  const int w= b->width;
1344  const int h= b->height;
1345  int x,y;
1346 
1347  for(y=h-1; y>=0; y--){
1348  for(x=w-1; x>=0; x--){
1349  int i= x + y*stride;
1350 
1351  if(x){
1352  if(use_median){
1353  if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1354  else src[i] -= src[i - 1];
1355  }else{
1356  if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1357  else src[i] -= src[i - 1];
1358  }
1359  }else{
1360  if(y) src[i] -= src[i - stride];
1361  }
1362  }
1363  }
1364 }
1365 
1366 static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1367  const int w= b->width;
1368  const int h= b->height;
1369  int x,y;
1370 
1371  for(y=0; y<h; y++){
1372  for(x=0; x<w; x++){
1373  int i= x + y*stride;
1374 
1375  if(x){
1376  if(use_median){
1377  if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1378  else src[i] += src[i - 1];
1379  }else{
1380  if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1381  else src[i] += src[i - 1];
1382  }
1383  }else{
1384  if(y) src[i] += src[i - stride];
1385  }
1386  }
1387  }
1388 }
1389 
1390 static void encode_qlogs(SnowContext *s){
1391  int plane_index, level, orientation;
1392 
1393  for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1394  for(level=0; level<s->spatial_decomposition_count; level++){
1395  for(orientation=level ? 1:0; orientation<4; orientation++){
1396  if(orientation==2) continue;
1397  put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1);
1398  }
1399  }
1400  }
1401 }
1402 
1403 static void encode_header(SnowContext *s){
1404  int plane_index, i;
1405  uint8_t kstate[32];
1406 
1407  memset(kstate, MID_STATE, sizeof(kstate));
1408 
1409  put_rac(&s->c, kstate, s->keyframe);
1410  if(s->keyframe || s->always_reset){
1411  ff_snow_reset_contexts(s);
1412  s->last_spatial_decomposition_type=
1413  s->last_qlog=
1414  s->last_qbias=
1415  s->last_mv_scale=
1416  s->last_block_max_depth= 0;
1417  for(plane_index=0; plane_index<2; plane_index++){
1418  Plane *p= &s->plane[plane_index];
1419  p->last_htaps=0;
1420  p->last_diag_mc=0;
1421  memset(p->last_hcoeff, 0, sizeof(p->last_hcoeff));
1422  }
1423  }
1424  if(s->keyframe){
1425  put_symbol(&s->c, s->header_state, s->version, 0);
1426  put_rac(&s->c, s->header_state, s->always_reset);
1427  put_symbol(&s->c, s->header_state, s->temporal_decomposition_type, 0);
1428  put_symbol(&s->c, s->header_state, s->temporal_decomposition_count, 0);
1429  put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
1430  put_symbol(&s->c, s->header_state, s->colorspace_type, 0);
1431  if (s->nb_planes > 2) {
1432  put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0);
1433  put_symbol(&s->c, s->header_state, s->chroma_v_shift, 0);
1434  }
1435  put_rac(&s->c, s->header_state, s->spatial_scalability);
1436 // put_rac(&s->c, s->header_state, s->rate_scalability);
1437  put_symbol(&s->c, s->header_state, s->max_ref_frames-1, 0);
1438 
1439  encode_qlogs(s);
1440  }
1441 
1442  if(!s->keyframe){
1443  int update_mc=0;
1444  for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1445  Plane *p= &s->plane[plane_index];
1446  update_mc |= p->last_htaps != p->htaps;
1447  update_mc |= p->last_diag_mc != p->diag_mc;
1448  update_mc |= !!memcmp(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1449  }
1450  put_rac(&s->c, s->header_state, update_mc);
1451  if(update_mc){
1452  for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1453  Plane *p= &s->plane[plane_index];
1454  put_rac(&s->c, s->header_state, p->diag_mc);
1455  put_symbol(&s->c, s->header_state, p->htaps/2-1, 0);
1456  for(i= p->htaps/2; i; i--)
1457  put_symbol(&s->c, s->header_state, FFABS(p->hcoeff[i]), 0);
1458  }
1459  }
1460  if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
1461  put_rac(&s->c, s->header_state, 1);
1462  put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
1463  encode_qlogs(s);
1464  }else
1465  put_rac(&s->c, s->header_state, 0);
1466  }
1467 
1468  put_symbol(&s->c, s->header_state, s->spatial_decomposition_type - s->last_spatial_decomposition_type, 1);
1469  put_symbol(&s->c, s->header_state, s->qlog - s->last_qlog , 1);
1470  put_symbol(&s->c, s->header_state, s->mv_scale - s->last_mv_scale, 1);
1471  put_symbol(&s->c, s->header_state, s->qbias - s->last_qbias , 1);
1472  put_symbol(&s->c, s->header_state, s->block_max_depth - s->last_block_max_depth, 1);
1473 
1474 }
1475 
1476 static void update_last_header_values(SnowContext *s){
1477  int plane_index;
1478 
1479  if(!s->keyframe){
1480  for(plane_index=0; plane_index<2; plane_index++){
1481  Plane *p= &s->plane[plane_index];
1482  p->last_diag_mc= p->diag_mc;
1483  p->last_htaps = p->htaps;
1484  memcpy(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1485  }
1486  }
1487 
1488  s->last_spatial_decomposition_type = s->spatial_decomposition_type;
1489  s->last_qlog = s->qlog;
1490  s->last_qbias = s->qbias;
1491  s->last_mv_scale = s->mv_scale;
1492  s->last_block_max_depth = s->block_max_depth;
1493  s->last_spatial_decomposition_count = s->spatial_decomposition_count;
1494 }
1495 
1496 static int qscale2qlog(int qscale){
1497  return lrint(QROOT*log2(qscale / (float)FF_QP2LAMBDA))
1498  + 61*QROOT/8; ///< 64 > 60
1499 }
1500 
1501 static int ratecontrol_1pass(SnowContext *s, AVFrame *pict)
1502 {
1503  /* Estimate the frame's complexity as a sum of weighted dwt coefficients.
1504  * FIXME we know exact mv bits at this point,
1505  * but ratecontrol isn't set up to include them. */
1506  uint32_t coef_sum= 0;
1507  int level, orientation, delta_qlog;
1508 
1509  for(level=0; level<s->spatial_decomposition_count; level++){
1510  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1511  SubBand *b= &s->plane[0].band[level][orientation];
1512  IDWTELEM *buf= b->ibuf;
1513  const int w= b->width;
1514  const int h= b->height;
1515  const int stride= b->stride;
1516  const int qlog= av_clip(2*QROOT + b->qlog, 0, QROOT*16);
1517  const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1518  const int qdiv= (1<<16)/qmul;
1519  int x, y;
1520  //FIXME this is ugly
1521  for(y=0; y<h; y++)
1522  for(x=0; x<w; x++)
1523  buf[x+y*stride]= b->buf[x+y*stride];
1524  if(orientation==0)
1525  decorrelate(s, b, buf, stride, 1, 0);
1526  for(y=0; y<h; y++)
1527  for(x=0; x<w; x++)
1528  coef_sum+= abs(buf[x+y*stride]) * qdiv >> 16;
1529  }
1530  }
1531 
1532  /* ugly, ratecontrol just takes a sqrt again */
1533  av_assert0(coef_sum < INT_MAX);
1534  coef_sum = (uint64_t)coef_sum * coef_sum >> 16;
1535 
1536  if(pict->pict_type == AV_PICTURE_TYPE_I){
1537  s->m.current_picture.mb_var_sum= coef_sum;
1538  s->m.current_picture.mc_mb_var_sum= 0;
1539  }else{
1540  s->m.current_picture.mc_mb_var_sum= coef_sum;
1541  s->m.current_picture.mb_var_sum= 0;
1542  }
1543 
1544  pict->quality= ff_rate_estimate_qscale(&s->m, 1);
1545  if (pict->quality < 0)
1546  return INT_MIN;
1547  s->lambda= pict->quality * 3/2;
1548  delta_qlog= qscale2qlog(pict->quality) - s->qlog;
1549  s->qlog+= delta_qlog;
1550  return delta_qlog;
1551 }
1552 
1553 static void calculate_visual_weight(SnowContext *s, Plane *p){
1554  int width = p->width;
1555  int height= p->height;
1556  int level, orientation, x, y;
1557 
1558  for(level=0; level<s->spatial_decomposition_count; level++){
1559  int64_t error=0;
1560  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1561  SubBand *b= &p->band[level][orientation];
1562  IDWTELEM *ibuf= b->ibuf;
1563 
1564  memset(s->spatial_idwt_buffer, 0, sizeof(*s->spatial_idwt_buffer)*width*height);
1565  ibuf[b->width/2 + b->height/2*b->stride]= 256*16;
1566  ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, width, height, width, s->spatial_decomposition_type, s->spatial_decomposition_count);
1567  for(y=0; y<height; y++){
1568  for(x=0; x<width; x++){
1569  int64_t d= s->spatial_idwt_buffer[x + y*width]*16;
1570  error += d*d;
1571  }
1572  }
1573  if (orientation == 2)
1574  error /= 2;
1575  b->qlog= (int)(QROOT * log2(352256.0/sqrt(error)) + 0.5);
1576  if (orientation != 1)
1577  error = 0;
1578  }
1579  p->band[level][1].qlog = p->band[level][2].qlog;
1580  }
1581 }
1582 
1583 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
1584  const AVFrame *pict, int *got_packet)
1585 {
1586  SnowContext *s = avctx->priv_data;
1587  RangeCoder * const c= &s->c;
1588  AVFrame *pic;
1589  const int width= s->avctx->width;
1590  const int height= s->avctx->height;
1591  int level, orientation, plane_index, i, y, ret;
1592  uint8_t rc_header_bak[sizeof(s->header_state)];
1593  uint8_t rc_block_bak[sizeof(s->block_state)];
1594 
1595  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)
1596  return ret;
1597 
1598  ff_init_range_encoder(c, pkt->data, pkt->size);
1599  ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1600 
1601  for(i=0; i < s->nb_planes; i++){
1602  int hshift= i ? s->chroma_h_shift : 0;
1603  int vshift= i ? s->chroma_v_shift : 0;
1604  for(y=0; y<AV_CEIL_RSHIFT(height, vshift); y++)
1605  memcpy(&s->input_picture->data[i][y * s->input_picture->linesize[i]],
1606  &pict->data[i][y * pict->linesize[i]],
1607  AV_CEIL_RSHIFT(width, hshift));
1608  s->mpvencdsp.draw_edges(s->input_picture->data[i], s->input_picture->linesize[i],
1609  AV_CEIL_RSHIFT(width, hshift), AV_CEIL_RSHIFT(height, vshift),
1610  EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
1611  EDGE_TOP | EDGE_BOTTOM);
1612 
1613  }
1614  emms_c();
1615  pic = s->input_picture;
1616  pic->pict_type = pict->pict_type;
1617  pic->quality = pict->quality;
1618 
1619  s->m.picture_number= avctx->frame_number;
1620  if(avctx->flags&AV_CODEC_FLAG_PASS2){
1621  s->m.pict_type = pic->pict_type = s->m.rc_context.entry[avctx->frame_number].new_pict_type;
1622  s->keyframe = pic->pict_type == AV_PICTURE_TYPE_I;
1623  if(!(avctx->flags&AV_CODEC_FLAG_QSCALE)) {
1624  pic->quality = ff_rate_estimate_qscale(&s->m, 0);
1625  if (pic->quality < 0)
1626  return -1;
1627  }
1628  }else{
1629  s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
1630  s->m.pict_type = pic->pict_type = s->keyframe ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P;
1631  }
1632 
1633  if(s->pass1_rc && avctx->frame_number == 0)
1634  pic->quality = 2*FF_QP2LAMBDA;
1635  if (pic->quality) {
1636  s->qlog = qscale2qlog(pic->quality);
1637  s->lambda = pic->quality * 3/2;
1638  }
1639  if (s->qlog < 0 || (!pic->quality && (avctx->flags & AV_CODEC_FLAG_QSCALE))) {
1640  s->qlog= LOSSLESS_QLOG;
1641  s->lambda = 0;
1642  }//else keep previous frame's qlog until after motion estimation
1643 
1644 #if FF_API_CODED_FRAME
1645 FF_DISABLE_DEPRECATION_WARNINGS
1646  av_frame_unref(avctx->coded_frame);
1647 FF_ENABLE_DEPRECATION_WARNINGS
1648 #endif
1649 
1650  if (s->current_picture->data[0]) {
1651  int w = s->avctx->width;
1652  int h = s->avctx->height;
1653 
1654 #if FF_API_CODED_FRAME
1655  ret = av_frame_make_writable(s->current_picture);
1656  if (ret < 0)
1657  return ret;
1658 #endif
1659 
1660  s->mpvencdsp.draw_edges(s->current_picture->data[0],
1661  s->current_picture->linesize[0], w , h ,
1662  EDGE_WIDTH , EDGE_WIDTH , EDGE_TOP | EDGE_BOTTOM);
1663  if (s->current_picture->data[2]) {
1664  s->mpvencdsp.draw_edges(s->current_picture->data[1],
1665  s->current_picture->linesize[1], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
1666  EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
1667  s->mpvencdsp.draw_edges(s->current_picture->data[2],
1668  s->current_picture->linesize[2], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
1669  EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
1670  }
1671  emms_c();
1672  }
1673 
1674  ff_snow_frame_start(s);
1675 #if FF_API_CODED_FRAME
1676 FF_DISABLE_DEPRECATION_WARNINGS
1677  ret = av_frame_ref(avctx->coded_frame, s->current_picture);
1678 FF_ENABLE_DEPRECATION_WARNINGS
1679 #endif
1680  if (ret < 0)
1681  return ret;
1682 
1683  s->m.current_picture_ptr= &s->m.current_picture;
1684  s->m.current_picture.f = s->current_picture;
1685  s->m.current_picture.f->pts = pict->pts;
1686  if(pic->pict_type == AV_PICTURE_TYPE_P){
1687  int block_width = (width +15)>>4;
1688  int block_height= (height+15)>>4;
1689  int stride= s->current_picture->linesize[0];
1690 
1691  av_assert0(s->current_picture->data[0]);
1692  av_assert0(s->last_picture[0]->data[0]);
1693 
1694  s->m.avctx= s->avctx;
1695  s->m. last_picture.f = s->last_picture[0];
1696  s->m. new_picture.f = s->input_picture;
1697  s->m. last_picture_ptr= &s->m. last_picture;
1698  s->m.linesize = stride;
1699  s->m.uvlinesize= s->current_picture->linesize[1];
1700  s->m.width = width;
1701  s->m.height= height;
1702  s->m.mb_width = block_width;
1703  s->m.mb_height= block_height;
1704  s->m.mb_stride= s->m.mb_width+1;
1705  s->m.b8_stride= 2*s->m.mb_width+1;
1706  s->m.f_code=1;
1707  s->m.pict_type = pic->pict_type;
1708  s->m.motion_est= s->motion_est;
1709  s->m.me.scene_change_score=0;
1710  s->m.me.dia_size = avctx->dia_size;
1711  s->m.quarter_sample= (s->avctx->flags & AV_CODEC_FLAG_QPEL)!=0;
1712  s->m.out_format= FMT_H263;
1713  s->m.unrestricted_mv= 1;
1714 
1715  s->m.lambda = s->lambda;
1716  s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
1717  s->lambda2= s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
1718 
1719  s->m.mecc= s->mecc; //move
1720  s->m.qdsp= s->qdsp; //move
1721  s->m.hdsp = s->hdsp;
1722  ff_init_me(&s->m);
1723  s->hdsp = s->m.hdsp;
1724  s->mecc= s->m.mecc;
1725  }
1726 
1727  if(s->pass1_rc){
1728  memcpy(rc_header_bak, s->header_state, sizeof(s->header_state));
1729  memcpy(rc_block_bak, s->block_state, sizeof(s->block_state));
1730  }
1731 
1732 redo_frame:
1733 
1734  s->spatial_decomposition_count= 5;
1735 
1736  while( !(width >>(s->chroma_h_shift + s->spatial_decomposition_count))
1737  || !(height>>(s->chroma_v_shift + s->spatial_decomposition_count)))
1738  s->spatial_decomposition_count--;
1739 
1740  if (s->spatial_decomposition_count <= 0) {
1741  av_log(avctx, AV_LOG_ERROR, "Resolution too low\n");
1742  return AVERROR(EINVAL);
1743  }
1744 
1745  s->m.pict_type = pic->pict_type;
1746  s->qbias = pic->pict_type == AV_PICTURE_TYPE_P ? 2 : 0;
1747 
1748  ff_snow_common_init_after_header(avctx);
1749 
1750  if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
1751  for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1752  calculate_visual_weight(s, &s->plane[plane_index]);
1753  }
1754  }
1755 
1756  encode_header(s);
1757  s->m.misc_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1758  encode_blocks(s, 1);
1759  s->m.mv_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits;
1760 
1761  for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1762  Plane *p= &s->plane[plane_index];
1763  int w= p->width;
1764  int h= p->height;
1765  int x, y;
1766 // int bits= put_bits_count(&s->c.pb);
1767 
1768  if (!s->memc_only) {
1769  //FIXME optimize
1770  if(pict->data[plane_index]) //FIXME gray hack
1771  for(y=0; y<h; y++){
1772  for(x=0; x<w; x++){
1773  s->spatial_idwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<FRAC_BITS;
1774  }
1775  }
1776  predict_plane(s, s->spatial_idwt_buffer, plane_index, 0);
1777 
1778 #if FF_API_PRIVATE_OPT
1779 FF_DISABLE_DEPRECATION_WARNINGS
1780  if(s->avctx->scenechange_threshold)
1781  s->scenechange_threshold = s->avctx->scenechange_threshold;
1782 FF_ENABLE_DEPRECATION_WARNINGS
1783 #endif
1784 
1785  if( plane_index==0
1786  && pic->pict_type == AV_PICTURE_TYPE_P
1787  && !(avctx->flags&AV_CODEC_FLAG_PASS2)
1788  && s->m.me.scene_change_score > s->scenechange_threshold){
1789  ff_init_range_encoder(c, pkt->data, pkt->size);
1790  ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1791  pic->pict_type= AV_PICTURE_TYPE_I;
1792  s->keyframe=1;
1793  s->current_picture->key_frame=1;
1794  goto redo_frame;
1795  }
1796 
1797  if(s->qlog == LOSSLESS_QLOG){
1798  for(y=0; y<h; y++){
1799  for(x=0; x<w; x++){
1800  s->spatial_dwt_buffer[y*w + x]= (s->spatial_idwt_buffer[y*w + x] + (1<<(FRAC_BITS-1))-1)>>FRAC_BITS;
1801  }
1802  }
1803  }else{
1804  for(y=0; y<h; y++){
1805  for(x=0; x<w; x++){
1806  s->spatial_dwt_buffer[y*w + x]= s->spatial_idwt_buffer[y*w + x] * (1 << ENCODER_EXTRA_BITS);
1807  }
1808  }
1809  }
1810 
1811  ff_spatial_dwt(s->spatial_dwt_buffer, s->temp_dwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
1812 
1813  if(s->pass1_rc && plane_index==0){
1814  int delta_qlog = ratecontrol_1pass(s, pic);
1815  if (delta_qlog <= INT_MIN)
1816  return -1;
1817  if(delta_qlog){
1818  //reordering qlog in the bitstream would eliminate this reset
1819  ff_init_range_encoder(c, pkt->data, pkt->size);
1820  memcpy(s->header_state, rc_header_bak, sizeof(s->header_state));
1821  memcpy(s->block_state, rc_block_bak, sizeof(s->block_state));
1822  encode_header(s);
1823  encode_blocks(s, 0);
1824  }
1825  }
1826 
1827  for(level=0; level<s->spatial_decomposition_count; level++){
1828  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1829  SubBand *b= &p->band[level][orientation];
1830 
1831  quantize(s, b, b->ibuf, b->buf, b->stride, s->qbias);
1832  if(orientation==0)
1833  decorrelate(s, b, b->ibuf, b->stride, pic->pict_type == AV_PICTURE_TYPE_P, 0);
1834  if (!s->no_bitstream)
1835  encode_subband(s, b, b->ibuf, b->parent ? b->parent->ibuf : NULL, b->stride, orientation);
1836  av_assert0(b->parent==NULL || b->parent->stride == b->stride*2);
1837  if(orientation==0)
1838  correlate(s, b, b->ibuf, b->stride, 1, 0);
1839  }
1840  }
1841 
1842  for(level=0; level<s->spatial_decomposition_count; level++){
1843  for(orientation=level ? 1 : 0; orientation<4; orientation++){
1844  SubBand *b= &p->band[level][orientation];
1845 
1846  dequantize(s, b, b->ibuf, b->stride);
1847  }
1848  }
1849 
1850  ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
1851  if(s->qlog == LOSSLESS_QLOG){
1852  for(y=0; y<h; y++){
1853  for(x=0; x<w; x++){
1854  s->spatial_idwt_buffer[y*w + x]<<=FRAC_BITS;
1855  }
1856  }
1857  }
1858  predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1859  }else{
1860  //ME/MC only
1861  if(pic->pict_type == AV_PICTURE_TYPE_I){
1862  for(y=0; y<h; y++){
1863  for(x=0; x<w; x++){
1864  s->current_picture->data[plane_index][y*s->current_picture->linesize[plane_index] + x]=
1865  pict->data[plane_index][y*pict->linesize[plane_index] + x];
1866  }
1867  }
1868  }else{
1869  memset(s->spatial_idwt_buffer, 0, sizeof(IDWTELEM)*w*h);
1870  predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1871  }
1872  }
1873  if(s->avctx->flags&AV_CODEC_FLAG_PSNR){
1874  int64_t error= 0;
1875 
1876  if(pict->data[plane_index]) //FIXME gray hack
1877  for(y=0; y<h; y++){
1878  for(x=0; x<w; x++){
1879  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];
1880  error += d*d;
1881  }
1882  }
1883  s->avctx->error[plane_index] += error;
1884  s->encoding_error[plane_index] = error;
1885  }
1886 
1887  }
1888  emms_c();
1889 
1890  update_last_header_values(s);
1891 
1892  ff_snow_release_buffer(avctx);
1893 
1894  s->current_picture->coded_picture_number = avctx->frame_number;
1895  s->current_picture->pict_type = pic->pict_type;
1896  s->current_picture->quality = pic->quality;
1897  s->m.frame_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1898  s->m.p_tex_bits = s->m.frame_bits - s->m.misc_bits - s->m.mv_bits;
1899  s->m.current_picture.f->display_picture_number =
1900  s->m.current_picture.f->coded_picture_number = avctx->frame_number;
1901  s->m.current_picture.f->quality = pic->quality;
1902  s->m.total_bits += 8*(s->c.bytestream - s->c.bytestream_start);
1903  if(s->pass1_rc)
1904  if (ff_rate_estimate_qscale(&s->m, 0) < 0)
1905  return -1;
1906  if(avctx->flags&AV_CODEC_FLAG_PASS1)
1907  ff_write_pass1_stats(&s->m);
1908  s->m.last_pict_type = s->m.pict_type;
1909 #if FF_API_STAT_BITS
1910 FF_DISABLE_DEPRECATION_WARNINGS
1911  avctx->frame_bits = s->m.frame_bits;
1912  avctx->mv_bits = s->m.mv_bits;
1913  avctx->misc_bits = s->m.misc_bits;
1914  avctx->p_tex_bits = s->m.p_tex_bits;
1915 FF_ENABLE_DEPRECATION_WARNINGS
1916 #endif
1917 
1918  emms_c();
1919 
1920  ff_side_data_set_encoder_stats(pkt, s->current_picture->quality,
1921  s->encoding_error,
1922  (s->avctx->flags&AV_CODEC_FLAG_PSNR) ? 4 : 0,
1923  s->current_picture->pict_type);
1924 
1925 #if FF_API_ERROR_FRAME
1926 FF_DISABLE_DEPRECATION_WARNINGS
1927  memcpy(s->current_picture->error, s->encoding_error, sizeof(s->encoding_error));
1928 FF_ENABLE_DEPRECATION_WARNINGS
1929 #endif
1930 
1931  pkt->size = ff_rac_terminate(c, 0);
1932  if (s->current_picture->key_frame)
1933  pkt->flags |= AV_PKT_FLAG_KEY;
1934  *got_packet = 1;
1935 
1936  return 0;
1937 }
1938 
1939 static av_cold int encode_end(AVCodecContext *avctx)
1940 {
1941  SnowContext *s = avctx->priv_data;
1942 
1943  ff_snow_common_end(s);
1944  ff_rate_control_uninit(&s->m);
1945  av_frame_free(&s->input_picture);
1946  av_freep(&avctx->stats_out);
1947 
1948  return 0;
1949 }
1950 
1951 #define OFFSET(x) offsetof(SnowContext, x)
1952 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1953 static const AVOption options[] = {
1954  {"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" },
1955  { "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, VE, "motion_est" },
1956  { "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, VE, "motion_est" },
1957  { "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, VE, "motion_est" },
1958  { "iter", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ITER }, 0, 0, VE, "motion_est" },
1959  { "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 },
1960  { "no_bitstream", "Skip final bitstream writeout.", OFFSET(no_bitstream), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1961  { "intra_penalty", "Penalty for intra blocks in block decission", OFFSET(intra_penalty), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1962  { "iterative_dia_size", "Dia size for the iterative ME", OFFSET(iterative_dia_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1963  { "sc_threshold", "Scene change threshold", OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, VE },
1964  { "pred", "Spatial decomposition type", OFFSET(pred), AV_OPT_TYPE_INT, { .i64 = 0 }, DWT_97, DWT_53, VE, "pred" },
1965  { "dwt97", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "pred" },
1966  { "dwt53", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "pred" },
1967  { "rc_eq", "Set rate control equation. When computing the expression, besides the standard functions "
1968  "defined in the section 'Expression Evaluation', the following functions are available: "
1969  "bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv "
1970  "fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.",
1971  OFFSET(m.rc_eq), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, VE },
1972  { NULL },
1973 };
1974 
1975 static const AVClass snowenc_class = {
1976  .class_name = "snow encoder",
1977  .item_name = av_default_item_name,
1978  .option = options,
1979  .version = LIBAVUTIL_VERSION_INT,
1980 };
1981 
1982 AVCodec ff_snow_encoder = {
1983  .name = "snow",
1984  .long_name = NULL_IF_CONFIG_SMALL("Snow"),
1985  .type = AVMEDIA_TYPE_VIDEO,
1986  .id = AV_CODEC_ID_SNOW,
1987  .priv_data_size = sizeof(SnowContext),
1988  .init = encode_init,
1989  .encode2 = encode_frame,
1990  .close = encode_end,
1991  .pix_fmts = (const enum AVPixelFormat[]){
1992  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV444P,
1993  AV_PIX_FMT_GRAY8,
1994  AV_PIX_FMT_NONE
1995  },
1996  .priv_class = &snowenc_class,
1997  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
1998  FF_CODEC_CAP_INIT_CLEANUP,
1999 };
inverse
static uint32_t inverse(uint32_t v)
find multiplicative inverse modulo 2 ^ 32
Definition: asfcrypt.c:35
av_always_inline
#define av_always_inline
Definition: attributes.h:45
av_cold
#define av_cold
Definition: attributes.h:88
uint8_t
uint8_t
Definition: audio_convert.c:194
av_assert2
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
avcodec.h
Libavcodec external API header.
FF_CMP_DCT264
#define FF_CMP_DCT264
Definition: avcodec.h:955
FF_CMP_W53
#define FF_CMP_W53
Definition: avcodec.h:952
FF_CMP_SSE
#define FF_CMP_SSE
Definition: avcodec.h:942
FF_CMP_DCT
#define FF_CMP_DCT
Definition: avcodec.h:944
FF_CMP_W97
#define FF_CMP_W97
Definition: avcodec.h:953
FF_CMP_BIT
#define FF_CMP_BIT
Definition: avcodec.h:946
FF_CMP_SATD
#define FF_CMP_SATD
Definition: avcodec.h:943
FF_CMP_NSSE
#define FF_CMP_NSSE
Definition: avcodec.h:951
FF_CMP_SAD
#define FF_CMP_SAD
Definition: avcodec.h:941
FF_CMP_PSNR
#define FF_CMP_PSNR
Definition: avcodec.h:945
FF_CMP_RD
#define FF_CMP_RD
Definition: avcodec.h:947
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:820
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
s
#define s(width, name)
Definition: cbs_vp9.c:257
state
static struct @321 state
MB_SIZE
#define MB_SIZE
Definition: cinepakenc.c:54
FFMIN
#define FFMIN(a, b)
Definition: common.h:105
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
av_clip
#define av_clip
Definition: common.h:122
ROUNDED_DIV
#define ROUNDED_DIV(a, b)
Definition: common.h:56
FFMAX
#define FFMAX(a, b)
Definition: common.h:103
av_clip_uint8
#define av_clip_uint8
Definition: common.h:128
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
NULL
#define NULL
Definition: coverity.c:32
int64_t
long long int64_t
Definition: coverity.c:34
abs
#define abs(x)
Definition: cuda_runtime.h:35
DWTELEM
int DWTELEM
Definition: dirac_dwt.h:26
IDWTELEM
short IDWTELEM
Definition: dirac_dwt.h:27
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:33
value
double value
Definition: eval.c:100
int
int
Definition: ffmpeg_filter.c:170
put_symbol
static av_noinline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed)
Definition: ffv1enc.c:232
put_rac
#define put_rac(C, S, B)
FRAC_BITS
#define FRAC_BITS
Definition: g729postfilter.c:33
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:242
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
AV_CODEC_FLAG_QPEL
#define AV_CODEC_FLAG_QPEL
Use qpel MC.
Definition: avcodec.h:287
AV_CODEC_FLAG_PASS2
#define AV_CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
Definition: avcodec.h:300
AV_CODEC_FLAG_QSCALE
#define AV_CODEC_FLAG_QSCALE
Use fixed qscale.
Definition: avcodec.h:275
AV_CODEC_FLAG_PASS1
#define AV_CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
Definition: avcodec.h:296
AV_CODEC_FLAG_PSNR
#define AV_CODEC_FLAG_PSNR
error[?] variables will be set during encoding.
Definition: avcodec.h:312
AV_CODEC_FLAG_4MV
#define AV_CODEC_FLAG_4MV
4 MV per MB allowed / advanced prediction for H.263.
Definition: avcodec.h:279
AV_CODEC_ID_SNOW
@ AV_CODEC_ID_SNOW
Definition: codec_id.h:262
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:222
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:410
FF_LAMBDA_SCALE
#define FF_LAMBDA_SCALE
Definition: avutil.h:226
FF_LAMBDA_SHIFT
#define FF_LAMBDA_SHIFT
Definition: avutil.h:225
FF_QP2LAMBDA
#define FF_QP2LAMBDA
factor to convert from H.263 QP to lambda
Definition: avutil.h:227
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
AVERROR
#define AVERROR(e)
Definition: error.h:43
av_frame_unref
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:553
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:443
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:190
av_frame_make_writable
int av_frame_make_writable(AVFrame *frame)
Ensure that the frame data is writable, avoiding data copy if possible.
Definition: frame.c:611
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
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:237
av_mallocz_array
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
Definition: mem.c:190
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
AV_PICTURE_TYPE_P
@ AV_PICTURE_TYPE_P
Predicted.
Definition: avutil.h:275
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
index
int index
Definition: gxfenc.c:89
ff_h263_encode_init
void ff_h263_encode_init(MpegEncContext *s)
Definition: ituh263enc.c:757
type
cl_device_type type
Definition: hwcontext_opencl.c:192
i
int i
Definition: input.c:407
av_log2
#define av_log2
Definition: intmath.h:83
pred_mv
static void pred_mv(DiracBlock *block, int stride, int x, int y, int ref)
Definition: diracdec.c:1390
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:41
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:49
internal.h
common internal API header
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:117
FF_DISABLE_DEPRECATION_WARNINGS
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:83
FF_ENABLE_DEPRECATION_WARNINGS
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
emms_c
#define emms_c()
Definition: internal.h:54
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:309
libm.h
Replacements for frequently missing libm functions.
log2
#define log2(x)
Definition: libm.h:404
w
uint8_t w
Definition: llviddspenc.c:39
stride
int stride
Definition: mace.c:144
mid_pred
#define mid_pred
Definition: mathops.h:97
ff_sqrt
#define ff_sqrt
Definition: mathops.h:206
ff_square_tab
const uint32_t ff_square_tab[512]
Definition: me_cmp.c:34
ff_set_cmp
void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type)
Definition: me_cmp.c:475
ff_init_me
int ff_init_me(MpegEncContext *s)
Definition: motion_est.c:306
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
MAX_MV
#define MAX_MV
Definition: motion_est.h:35
ME_MAP_SIZE
#define ME_MAP_SIZE
Definition: motion_est.h:38
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:977
FF_ME_EPZS
#define FF_ME_EPZS
Definition: motion_est.h:41
FF_ME_XONE
#define FF_ME_XONE
Definition: motion_est.h:42
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
FF_ME_ZERO
#define FF_ME_ZERO
Definition: motion_est.h:40
MAX_DMV
#define MAX_DMV
Definition: motion_est.h:37
P
#define P
EDGE_WIDTH
#define EDGE_WIDTH
Definition: mpegpicture.h:33
FMT_H263
@ FMT_H263
Definition: mpegutils.h:126
mpegvideo.h
mpegvideo header.
ff_mpegvideoencdsp_init
av_cold void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
Definition: mpegvideoencdsp.c:232
EDGE_BOTTOM
#define EDGE_BOTTOM
Definition: mpegvideoencdsp.h:30
EDGE_TOP
#define EDGE_TOP
Definition: mpegvideoencdsp.h:29
opt.h
AVOptions.
packet_internal.h
av_pix_fmt_get_chroma_sub_sample
int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
Definition: pixdesc.c:2601
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
ff_rac_terminate
int ff_rac_terminate(RangeCoder *c, int version)
Terminates the range coder.
Definition: rangecoder.c:109
ff_build_rac_states
void ff_build_rac_states(RangeCoder *c, int factor, int max_p)
Definition: rangecoder.c:68
ff_init_range_encoder
av_cold void ff_init_range_encoder(RangeCoder *c, uint8_t *buf, int buf_size)
Definition: rangecoder.c:42
rangecoder.h
Range coder.
get_rac_count
static int get_rac_count(RangeCoder *c)
Definition: rangecoder.h:85
ff_rate_control_init
av_cold int ff_rate_control_init(MpegEncContext *s)
Definition: ratecontrol.c:472
ff_rate_control_uninit
av_cold void ff_rate_control_uninit(MpegEncContext *s)
Definition: ratecontrol.c:672
ff_rate_estimate_qscale
float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run)
Definition: ratecontrol.c:868
ff_write_pass1_stats
void ff_write_pass1_stats(MpegEncContext *s)
Definition: ratecontrol.c:38
tb
#define tb
Definition: regdef.h:68
t2
#define t2
Definition: regdef.h:30
square
static int square(int x)
Definition: roqvideoenc.c:193
pred
static const float pred[4]
Definition: siprdata.h:259
ff_snow_common_init
av_cold int ff_snow_common_init(AVCodecContext *avctx)
Definition: snow.c:439
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:328
ff_snow_get_buffer
int ff_snow_get_buffer(SnowContext *s, AVFrame *frame)
Definition: snow.c:70
ff_snow_release_buffer
void ff_snow_release_buffer(AVCodecContext *avctx)
Definition: snow.c:646
ff_snow_reset_contexts
void ff_snow_reset_contexts(SnowContext *s)
Definition: snow.c:97
ff_snow_common_init_after_header
int ff_snow_common_init_after_header(AVCodecContext *avctx)
Definition: snow.c:521
ff_snow_frame_start
int ff_snow_frame_start(SnowContext *s)
Definition: snow.c:661
ff_snow_common_end
av_cold void ff_snow_common_end(SnowContext *s)
Definition: snow.c:699
ff_snow_alloc_blocks
int ff_snow_alloc_blocks(SnowContext *s)
Definition: snow.c:111
BLOCK_OPT
#define BLOCK_OPT
Block needs no checks in this round of iterative motion estiation.
Definition: snow.h:59
LOG2_MB_SIZE
#define LOG2_MB_SIZE
Definition: snow.h:73
QROOT
#define QROOT
Definition: snow.h:44
predict_plane
static av_always_inline void predict_plane(SnowContext *s, IDWTELEM *buf, int plane_index, int add)
Definition: snow.h:456
MID_STATE
#define MID_STATE
Definition: snow.h:40
QSHIFT
#define QSHIFT
Definition: snow.h:43
FF_ME_ITER
#define FF_ME_ITER
Definition: snow.h:38
QEXPSHIFT
#define QEXPSHIFT
Definition: snow.h:508
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:463
ff_obmc_tab
const uint8_t *const ff_obmc_tab[4]
Definition: snowdata.h:123
put_symbol2
static void put_symbol2(RangeCoder *c, uint8_t *state, int v, int log2)
Definition: snow.h:564
ff_qexp
uint8_t ff_qexp[QROOT]
Definition: snowdata.h:128
ENCODER_EXTRA_BITS
#define ENCODER_EXTRA_BITS
Definition: snow.h:75
BLOCK_INTRA
#define BLOCK_INTRA
Intra block, inter otherwise.
Definition: snow.h:58
LOSSLESS_QLOG
#define LOSSLESS_QLOG
Definition: snow.h:45
QBIAS_SHIFT
#define QBIAS_SHIFT
Definition: snow.h:164
MAX_REF_FRAMES
#define MAX_REF_FRAMES
Definition: snow.h:47
same_block
static av_always_inline int same_block(BlockNode *a, BlockNode *b)
Definition: snow.h:271
LOG2_OBMC_MAX
#define LOG2_OBMC_MAX
Definition: snow.h:49
ff_quant3bA
const int8_t ff_quant3bA[256]
Definition: snowdata.h:104
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:281
ME_CACHE_SIZE
#define ME_CACHE_SIZE
Definition: snow.h:172
null_block
static const BlockNode null_block
Definition: snow.h:64
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
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
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
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
snow_dwt.h
DWT_97
#define DWT_97
Definition: snow_dwt.h:68
DWT_53
#define DWT_53
Definition: snow_dwt.h:69
get_4block_rd
static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index)
Definition: snowenc.c:722
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:964
qscale2qlog
static int qscale2qlog(int qscale)
Definition: snowenc.c:1496
snowenc_class
static const AVClass snowenc_class
Definition: snowenc.c:1975
get_penalty_factor
static int get_penalty_factor(int lambda, int lambda2, int type)
Definition: snowenc.c:197
options
static const AVOption options[]
Definition: snowenc.c:1953
VE
#define VE
Definition: snowenc.c:1952
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:620
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:791
encode_q_branch2
static void encode_q_branch2(SnowContext *s, int level, int x, int y)
Definition: snowenc.c:463
P_TOP
#define P_TOP
Definition: snowenc.c:223
calculate_visual_weight
static void calculate_visual_weight(SnowContext *s, Plane *p)
Definition: snowenc.c:1553
correlate
static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median)
Definition: snowenc.c:1366
get_block_bits
static int get_block_bits(SnowContext *s, int x, int y, int w)
Definition: snowenc.c:582
P_MEDIAN
#define P_MEDIAN
Definition: snowenc.c:225
encode_init
static av_cold int encode_init(AVCodecContext *avctx)
Definition: snowenc.c:38
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:918
pix_sum
static int pix_sum(uint8_t *pix, int line_size, int w, int h)
Definition: snowenc.c:165
ratecontrol_1pass
static int ratecontrol_1pass(SnowContext *s, AVFrame *pict)
Definition: snowenc.c:1501
get_dc
static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index)
Definition: snowenc.c:519
encode_frame
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: snowenc.c:1583
encode_qlogs
static void encode_qlogs(SnowContext *s)
Definition: snowenc.c:1390
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:959
P_LEFT
#define P_LEFT
Definition: snowenc.c:222
encode_q_branch
static int encode_q_branch(SnowContext *s, int level, int x, int y)
Definition: snowenc.c:229
decorrelate
static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median)
Definition: snowenc.c:1342
encode_end
static av_cold int encode_end(AVCodecContext *avctx)
Definition: snowenc.c:1939
encode_header
static void encode_header(SnowContext *s)
Definition: snowenc.c:1403
ff_snow_encoder
AVCodec ff_snow_encoder
Definition: snowenc.c:1982
OFFSET
#define OFFSET(x)
Definition: snowenc.c:1951
dequantize
static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride)
Definition: snowenc.c:1320
quantize
static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias)
Definition: snowenc.c:1259
iterative_me
static void iterative_me(SnowContext *s)
Definition: snowenc.c:1010
update_last_header_values
static void update_last_header_values(SnowContext *s)
Definition: snowenc.c:1476
pix_norm1
static int pix_norm1(uint8_t *pix, int line_size, int w)
Definition: snowenc.c:181
P_TOPRIGHT
#define P_TOPRIGHT
Definition: snowenc.c:224
encode_blocks
static void encode_blocks(SnowContext *s, int search)
Definition: snowenc.c:1237
encode_subband
static int encode_subband(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation)
Definition: snowenc.c:911
shift
static int shift(int a, int b)
Definition: sonic.c:82
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
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
AVCodecContext
main external API structure.
Definition: avcodec.h:536
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:746
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:709
AVCodecContext::stats_out
char * stats_out
pass1 encoding statistics output buffer
Definition: avcodec.h:1561
AVCodecContext::global_quality
int global_quality
Global quality for codecs which cannot change it per frame.
Definition: avcodec.h:602
AVCodecContext::frame_bits
attribute_deprecated int frame_bits
Definition: avcodec.h:1553
AVCodecContext::mv_bits
attribute_deprecated int mv_bits
Definition: avcodec.h:1535
AVCodecContext::mb_lmax
int mb_lmax
maximum MB Lagrange multiplier
Definition: avcodec.h:1090
AVCodecContext::dia_size
int dia_size
ME diamond size & shape.
Definition: avcodec.h:964
AVCodecContext::coded_frame
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:1768
AVCodecContext::misc_bits
attribute_deprecated int misc_bits
Definition: avcodec.h:1549
AVCodecContext::bit_rate
int64_t bit_rate
the average bitrate
Definition: avcodec.h:586
AVCodecContext::gop_size
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:731
AVCodecContext::frame_number
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:1227
AVCodecContext::refs
int refs
number of reference frames
Definition: avcodec.h:1124
AVCodecContext::mb_lmin
int mb_lmin
minimum MB Lagrange multiplier
Definition: avcodec.h:1083
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:616
AVCodecContext::prediction_method
attribute_deprecated int prediction_method
Definition: avcodec.h:895
AVCodecContext::p_tex_bits
attribute_deprecated int p_tex_bits
Definition: avcodec.h:1541
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:563
AVCodec
AVCodec.
Definition: codec.h:197
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:204
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:411
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:332
AVFrame::quality
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:441
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:349
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:401
AVOption
AVOption.
Definition: opt.h:248
AVPacket
This structure stores compressed data.
Definition: packet.h:346
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:375
AVPacket::size
int size
Definition: packet.h:370
AVPacket::data
uint8_t * data
Definition: packet.h:369
BlockNode
Definition: snow.h:51
BlockNode::ref
uint8_t ref
Reference frame index.
Definition: snow.h:54
BlockNode::mx
int16_t mx
Motion vector component X, see mv_scale.
Definition: snow.h:52
BlockNode::color
uint8_t color[3]
Color for intra.
Definition: snow.h:55
BlockNode::my
int16_t my
Motion vector component Y, see mv_scale.
Definition: snow.h:53
BlockNode::type
uint8_t type
Bitfield of BLOCK_*.
Definition: snow.h:56
BlockNode::level
uint8_t level
Definition: snow.h:61
MotionEstContext
Motion estimation context.
Definition: motion_est.h:47
Plane
Definition: cfhd.h:129
Plane::last_htaps
int last_htaps
Definition: snow.h:109
Plane::band
SubBand band[DWT_LEVELS_3D][4]
Definition: cfhd.h:142
Plane::htaps
int htaps
Definition: snow.h:104
Plane::last_diag_mc
int last_diag_mc
Definition: snow.h:111
Plane::width
int width
Definition: cfhd.h:130
Plane::last_hcoeff
int8_t last_hcoeff[HTAPS_MAX/2]
Definition: snow.h:110
Plane::height
int height
Definition: cfhd.h:131
Plane::hcoeff
int8_t hcoeff[HTAPS_MAX/2]
Definition: snow.h:105
Plane::diag_mc
int diag_mc
Definition: snow.h:106
SubBand
Definition: cfhd.h:120
SubBand::qlog
int qlog
log(qscale)/log[2^(1/6)]
Definition: snow.h:88
run
uint8_t run
Definition: svq3.c:205
level
uint8_t level
Definition: svq3.c:206
lrint
#define lrint
Definition: tablegen.h:53
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
error
static void error(const char *err)
Definition: target_bsf_fuzzer.c:30
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:27
src
#define src
Definition: vp8dsp.c:255
block
static int16_t block[64]
Definition: dct.c:116
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
pkt
AVPacket * pkt
Definition: movenc.c:59
last_picture
enum AVPictureType last_picture
Definition: movenc.c:69
height
#define height
width
#define width
size
int size
Definition: twinvq_data.h:10344
pass
#define pass
Definition: tx_template.c:347
b
const char * b
Definition: vf_curves.c:119
r
const char * r
Definition: vf_curves.c:117
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:160
cr
static double cr(void *priv, double x, double y)
Definition: vf_geq.c:217
cb
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:216
h
h
Definition: vp9dsp_template.c:2038
c
static double c[64]
Definition: vsrc_mptestsrc.c:92
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