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snow.h
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1 /*
2  * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
3  * Copyright (C) 2006 Robert Edele <yartrebo@earthlink.net>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #ifndef AVCODEC_SNOW_H
23 #define AVCODEC_SNOW_H
24 
26 
27 #include "hpeldsp.h"
28 #include "me_cmp.h"
29 #include "qpeldsp.h"
30 #include "snow_dwt.h"
31 
32 #include "rangecoder.h"
33 #include "mathops.h"
34 
35 #include "mpegvideo.h"
36 #include "h264qpel.h"
37 
38 #define FF_ME_ITER 3
39 
40 #define MID_STATE 128
41 
42 #define MAX_PLANES 4
43 #define QSHIFT 5
44 #define QROOT (1<<QSHIFT)
45 #define LOSSLESS_QLOG -128
46 #define FRAC_BITS 4
47 #define MAX_REF_FRAMES 8
48 
49 #define LOG2_OBMC_MAX 8
50 #define OBMC_MAX (1<<(LOG2_OBMC_MAX))
51 typedef struct BlockNode{
52  int16_t mx; ///< Motion vector component X, see mv_scale
53  int16_t my; ///< Motion vector component Y, see mv_scale
54  uint8_t ref; ///< Reference frame index
55  uint8_t color[3]; ///< Color for intra
56  uint8_t type; ///< Bitfield of BLOCK_*
57 //#define TYPE_SPLIT 1
58 #define BLOCK_INTRA 1 ///< Intra block, inter otherwise
59 #define BLOCK_OPT 2 ///< Block needs no checks in this round of iterative motion estiation
60 //#define TYPE_NOCOLOR 4
61  uint8_t level; //FIXME merge into type?
62 }BlockNode;
63 
64 static const BlockNode null_block= { //FIXME add border maybe
65  .color= {128,128,128},
66  .mx= 0,
67  .my= 0,
68  .ref= 0,
69  .type= 0,
70  .level= 0,
71 };
72 
73 #define LOG2_MB_SIZE 4
74 #define MB_SIZE (1<<LOG2_MB_SIZE)
75 #define ENCODER_EXTRA_BITS 4
76 #define HTAPS_MAX 8
77 
78 typedef struct x_and_coeff{
79  int16_t x;
80  uint16_t coeff;
81 } x_and_coeff;
82 
83 typedef struct SubBand{
84  int level;
85  int stride;
86  int width;
87  int height;
88  int qlog; ///< log(qscale)/log[2^(1/6)]
93  int stride_line; ///< Stride measured in lines, not pixels.
95  struct SubBand *parent;
96  uint8_t state[/*7*2*/ 7 + 512][32];
97 }SubBand;
98 
99 typedef struct Plane{
100  int width;
101  int height;
103 
104  int htaps;
105  int8_t hcoeff[HTAPS_MAX/2];
106  int diag_mc;
107  int fast_mc;
108 
112 }Plane;
113 
114 typedef struct SnowContext{
115  AVClass *class;
125  AVFrame *input_picture; ///< new_picture with the internal linesizes
130 // uint8_t q_context[16];
132  uint8_t block_state[128 + 32*128];
133  int keyframe;
135  int version;
144  int16_t (*ref_mvs[MAX_REF_FRAMES])[2];
155  int qlog;
157  int lambda;
158  int lambda2;
159  int pass1_rc;
160  int mv_scale;
162  int qbias;
164 #define QBIAS_SHIFT 3
165  int b_width;
166  int b_height;
172 #define ME_CACHE_SIZE 1024
182 
183  MpegEncContext m; // needed for motion estimation, should not be used for anything else, the idea is to eventually make the motion estimation independent of MpegEncContext, so this will be removed then (FIXME/XXX)
184 
187 
191 
192  int pred;
193 }SnowContext;
194 
195 /* Tables */
196 extern const uint8_t * const ff_obmc_tab[4];
197 extern uint8_t ff_qexp[QROOT];
199 
200 /* C bits used by mmx/sse2/altivec */
201 
202 static av_always_inline void snow_interleave_line_header(int * i, int width, IDWTELEM * low, IDWTELEM * high){
203  (*i) = (width) - 2;
204 
205  if (width & 1){
206  low[(*i)+1] = low[((*i)+1)>>1];
207  (*i)--;
208  }
209 }
210 
211 static av_always_inline void snow_interleave_line_footer(int * i, IDWTELEM * low, IDWTELEM * high){
212  for (; (*i)>=0; (*i)-=2){
213  low[(*i)+1] = high[(*i)>>1];
214  low[*i] = low[(*i)>>1];
215  }
216 }
217 
218 static av_always_inline void snow_horizontal_compose_lift_lead_out(int i, IDWTELEM * dst, IDWTELEM * src, IDWTELEM * ref, int width, int w, int lift_high, int mul, int add, int shift){
219  for(; i<w; i++){
220  dst[i] = src[i] - ((mul * (ref[i] + ref[i + 1]) + add) >> shift);
221  }
222 
223  if((width^lift_high)&1){
224  dst[w] = src[w] - ((mul * 2 * ref[w] + add) >> shift);
225  }
226 }
227 
229  for(; i<w; i++){
230  dst[i] = src[i] + ((ref[i] + ref[(i+1)]+W_BO + 4 * src[i]) >> W_BS);
231  }
232 
233  if(width&1){
234  dst[w] = src[w] + ((2 * ref[w] + W_BO + 4 * src[w]) >> W_BS);
235  }
236 }
237 
238 /* common code */
239 
247 void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, ptrdiff_t stride,
248  int sx, int sy, int b_w, int b_h, const BlockNode *block,
249  int plane_index, int w, int h);
251 /* common inline functions */
252 //XXX doublecheck all of them should stay inlined
253 
254 static inline void pred_mv(SnowContext *s, int *mx, int *my, int ref,
255  const BlockNode *left, const BlockNode *top, const BlockNode *tr){
256  if(s->ref_frames == 1){
257  *mx = mid_pred(left->mx, top->mx, tr->mx);
258  *my = mid_pred(left->my, top->my, tr->my);
259  }else{
260  const int *scale = ff_scale_mv_ref[ref];
261  *mx = mid_pred((left->mx * scale[left->ref] + 128) >>8,
262  (top ->mx * scale[top ->ref] + 128) >>8,
263  (tr ->mx * scale[tr ->ref] + 128) >>8);
264  *my = mid_pred((left->my * scale[left->ref] + 128) >>8,
265  (top ->my * scale[top ->ref] + 128) >>8,
266  (tr ->my * scale[tr ->ref] + 128) >>8);
267  }
268 }
269 
271  if((a->type&BLOCK_INTRA) && (b->type&BLOCK_INTRA)){
272  return !((a->color[0] - b->color[0]) | (a->color[1] - b->color[1]) | (a->color[2] - b->color[2]));
273  }else{
274  return !((a->mx - b->mx) | (a->my - b->my) | (a->ref - b->ref) | ((a->type ^ b->type)&BLOCK_INTRA));
275  }
276 }
277 
278 //FIXME name cleanup (b_w, block_w, b_width stuff)
279 //XXX should we really inline it?
280 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){
281  const int b_width = s->b_width << s->block_max_depth;
282  const int b_height= s->b_height << s->block_max_depth;
283  const int b_stride= b_width;
284  BlockNode *lt= &s->block[b_x + b_y*b_stride];
285  BlockNode *rt= lt+1;
286  BlockNode *lb= lt+b_stride;
287  BlockNode *rb= lb+1;
288  uint8_t *block[4];
289  // When src_stride is large enough, it is possible to interleave the blocks.
290  // Otherwise the blocks are written sequentially in the tmp buffer.
291  int tmp_step= src_stride >= 7*MB_SIZE ? MB_SIZE : MB_SIZE*src_stride;
292  uint8_t *tmp = s->scratchbuf;
293  uint8_t *ptmp;
294  int x,y;
295 
296  if(b_x<0){
297  lt= rt;
298  lb= rb;
299  }else if(b_x + 1 >= b_width){
300  rt= lt;
301  rb= lb;
302  }
303  if(b_y<0){
304  lt= lb;
305  rt= rb;
306  }else if(b_y + 1 >= b_height){
307  lb= lt;
308  rb= rt;
309  }
310 
311  if(src_x<0){ //FIXME merge with prev & always round internal width up to *16
312  obmc -= src_x;
313  b_w += src_x;
314  if(!sliced && !offset_dst)
315  dst -= src_x;
316  src_x=0;
317  }
318  if(src_x + b_w > w){
319  b_w = w - src_x;
320  }
321  if(src_y<0){
322  obmc -= src_y*obmc_stride;
323  b_h += src_y;
324  if(!sliced && !offset_dst)
325  dst -= src_y*dst_stride;
326  src_y=0;
327  }
328  if(src_y + b_h> h){
329  b_h = h - src_y;
330  }
331 
332  if(b_w<=0 || b_h<=0) return;
333 
334  if(!sliced && offset_dst)
335  dst += src_x + src_y*dst_stride;
336  dst8+= src_x + src_y*src_stride;
337 // src += src_x + src_y*src_stride;
338 
339  ptmp= tmp + 3*tmp_step;
340  block[0]= ptmp;
341  ptmp+=tmp_step;
342  ff_snow_pred_block(s, block[0], tmp, src_stride, src_x, src_y, b_w, b_h, lt, plane_index, w, h);
343 
344  if(same_block(lt, rt)){
345  block[1]= block[0];
346  }else{
347  block[1]= ptmp;
348  ptmp+=tmp_step;
349  ff_snow_pred_block(s, block[1], tmp, src_stride, src_x, src_y, b_w, b_h, rt, plane_index, w, h);
350  }
351 
352  if(same_block(lt, lb)){
353  block[2]= block[0];
354  }else if(same_block(rt, lb)){
355  block[2]= block[1];
356  }else{
357  block[2]= ptmp;
358  ptmp+=tmp_step;
359  ff_snow_pred_block(s, block[2], tmp, src_stride, src_x, src_y, b_w, b_h, lb, plane_index, w, h);
360  }
361 
362  if(same_block(lt, rb) ){
363  block[3]= block[0];
364  }else if(same_block(rt, rb)){
365  block[3]= block[1];
366  }else if(same_block(lb, rb)){
367  block[3]= block[2];
368  }else{
369  block[3]= ptmp;
370  ff_snow_pred_block(s, block[3], tmp, src_stride, src_x, src_y, b_w, b_h, rb, plane_index, w, h);
371  }
372  if(sliced){
373  s->dwt.inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
374  }else{
375  for(y=0; y<b_h; y++){
376  //FIXME ugly misuse of obmc_stride
377  const uint8_t *obmc1= obmc + y*obmc_stride;
378  const uint8_t *obmc2= obmc1+ (obmc_stride>>1);
379  const uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1);
380  const uint8_t *obmc4= obmc3+ (obmc_stride>>1);
381  for(x=0; x<b_w; x++){
382  int v= obmc1[x] * block[3][x + y*src_stride]
383  +obmc2[x] * block[2][x + y*src_stride]
384  +obmc3[x] * block[1][x + y*src_stride]
385  +obmc4[x] * block[0][x + y*src_stride];
386 
387  v <<= 8 - LOG2_OBMC_MAX;
388  if(FRAC_BITS != 8){
389  v >>= 8 - FRAC_BITS;
390  }
391  if(add){
392  v += dst[x + y*dst_stride];
393  v = (v + (1<<(FRAC_BITS-1))) >> FRAC_BITS;
394  if(v&(~255)) v= ~(v>>31);
395  dst8[x + y*src_stride] = v;
396  }else{
397  dst[x + y*dst_stride] -= v;
398  }
399  }
400  }
401  }
402 }
403 
404 static av_always_inline void predict_slice(SnowContext *s, IDWTELEM *buf, int plane_index, int add, int mb_y){
405  Plane *p= &s->plane[plane_index];
406  const int mb_w= s->b_width << s->block_max_depth;
407  const int mb_h= s->b_height << s->block_max_depth;
408  int x, y, mb_x;
409  int block_size = MB_SIZE >> s->block_max_depth;
410  int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
411  int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
412  const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
413  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
414  int ref_stride= s->current_picture->linesize[plane_index];
415  uint8_t *dst8= s->current_picture->data[plane_index];
416  int w= p->width;
417  int h= p->height;
418  av_assert2(s->chroma_h_shift == s->chroma_v_shift); // obmc params assume squares
419  if(s->keyframe || (s->avctx->debug&512)){
420  if(mb_y==mb_h)
421  return;
422 
423  if(add){
424  for(y=block_h*mb_y; y<FFMIN(h,block_h*(mb_y+1)); y++){
425  for(x=0; x<w; x++){
426  int v= buf[x + y*w] + (128<<FRAC_BITS) + (1<<(FRAC_BITS-1));
427  v >>= FRAC_BITS;
428  if(v&(~255)) v= ~(v>>31);
429  dst8[x + y*ref_stride]= v;
430  }
431  }
432  }else{
433  for(y=block_h*mb_y; y<FFMIN(h,block_h*(mb_y+1)); y++){
434  for(x=0; x<w; x++){
435  buf[x + y*w]-= 128<<FRAC_BITS;
436  }
437  }
438  }
439 
440  return;
441  }
442 
443  for(mb_x=0; mb_x<=mb_w; mb_x++){
444  add_yblock(s, 0, NULL, buf, dst8, obmc,
445  block_w*mb_x - block_w/2,
446  block_h*mb_y - block_h/2,
447  block_w, block_h,
448  w, h,
449  w, ref_stride, obmc_stride,
450  mb_x - 1, mb_y - 1,
451  add, 1, plane_index);
452  }
453 }
454 
455 static av_always_inline void predict_plane(SnowContext *s, IDWTELEM *buf, int plane_index, int add){
456  const int mb_h= s->b_height << s->block_max_depth;
457  int mb_y;
458  for(mb_y=0; mb_y<=mb_h; mb_y++)
459  predict_slice(s, buf, plane_index, add, mb_y);
460 }
461 
462 static inline 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){
463  const int w= s->b_width << s->block_max_depth;
464  const int rem_depth= s->block_max_depth - level;
465  const int index= (x + y*w) << rem_depth;
466  const int block_w= 1<<rem_depth;
467  const int block_h= 1<<rem_depth; //FIXME "w!=h"
469  int i,j;
470 
471  block.color[0]= l;
472  block.color[1]= cb;
473  block.color[2]= cr;
474  block.mx= mx;
475  block.my= my;
476  block.ref= ref;
477  block.type= type;
478  block.level= level;
479 
480  for(j=0; j<block_h; j++){
481  for(i=0; i<block_w; i++){
482  s->block[index + i + j*w]= block;
483  }
484  }
485 }
486 
487 static inline void init_ref(MotionEstContext *c, uint8_t *src[3], uint8_t *ref[3], uint8_t *ref2[3], int x, int y, int ref_index){
488  SnowContext *s = c->avctx->priv_data;
489  const int offset[3]= {
490  y*c-> stride + x,
491  ((y*c->uvstride + x)>>s->chroma_h_shift),
492  ((y*c->uvstride + x)>>s->chroma_h_shift),
493  };
494  int i;
495  for(i=0; i<3; i++){
496  c->src[0][i]= src [i];
497  c->ref[0][i]= ref [i] + offset[i];
498  }
499  av_assert2(!ref_index);
500 }
501 
502 
503 /* bitstream functions */
504 
505 extern const int8_t ff_quant3bA[256];
506 
507 #define QEXPSHIFT (7-FRAC_BITS+8) //FIXME try to change this to 0
508 
509 static inline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){
510  int i;
511 
512  if(v){
513  const int a= FFABS(v);
514  const int e= av_log2(a);
515  const int el= FFMIN(e, 10);
516  put_rac(c, state+0, 0);
517 
518  for(i=0; i<el; i++){
519  put_rac(c, state+1+i, 1); //1..10
520  }
521  for(; i<e; i++){
522  put_rac(c, state+1+9, 1); //1..10
523  }
524  put_rac(c, state+1+FFMIN(i,9), 0);
525 
526  for(i=e-1; i>=el; i--){
527  put_rac(c, state+22+9, (a>>i)&1); //22..31
528  }
529  for(; i>=0; i--){
530  put_rac(c, state+22+i, (a>>i)&1); //22..31
531  }
532 
533  if(is_signed)
534  put_rac(c, state+11 + el, v < 0); //11..21
535  }else{
536  put_rac(c, state+0, 1);
537  }
538 }
539 
540 static inline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed){
541  if(get_rac(c, state+0))
542  return 0;
543  else{
544  int i, e;
545  unsigned a;
546  e= 0;
547  while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10
548  e++;
549  if (e > 31)
550  return AVERROR_INVALIDDATA;
551  }
552 
553  a= 1;
554  for(i=e-1; i>=0; i--){
555  a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31
556  }
557 
558  e= -(is_signed && get_rac(c, state+11 + FFMIN(e,10))); //11..21
559  return (a^e)-e;
560  }
561 }
562 
563 static inline void put_symbol2(RangeCoder *c, uint8_t *state, int v, int log2){
564  int i;
565  int r= log2>=0 ? 1<<log2 : 1;
566 
567  av_assert2(v>=0);
568  av_assert2(log2>=-4);
569 
570  while(v >= r){
571  put_rac(c, state+4+log2, 1);
572  v -= r;
573  log2++;
574  if(log2>0) r+=r;
575  }
576  put_rac(c, state+4+log2, 0);
577 
578  for(i=log2-1; i>=0; i--){
579  put_rac(c, state+31-i, (v>>i)&1);
580  }
581 }
582 
583 static inline int get_symbol2(RangeCoder *c, uint8_t *state, int log2){
584  int i;
585  int r= log2>=0 ? 1<<log2 : 1;
586  int v=0;
587 
588  av_assert2(log2>=-4);
589 
590  while(log2<28 && get_rac(c, state+4+log2)){
591  v+= r;
592  log2++;
593  if(log2>0) r+=r;
594  }
595 
596  for(i=log2-1; i>=0; i--){
597  v+= get_rac(c, state+31-i)<<i;
598  }
599 
600  return v;
601 }
602 
603 static inline void unpack_coeffs(SnowContext *s, SubBand *b, SubBand * parent, int orientation){
604  const int w= b->width;
605  const int h= b->height;
606  int x,y;
607 
608  int run, runs;
609  x_and_coeff *xc= b->x_coeff;
610  x_and_coeff *prev_xc= NULL;
611  x_and_coeff *prev2_xc= xc;
612  x_and_coeff *parent_xc= parent ? parent->x_coeff : NULL;
613  x_and_coeff *prev_parent_xc= parent_xc;
614 
615  runs= get_symbol2(&s->c, b->state[30], 0);
616  if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
617  else run= INT_MAX;
618 
619  for(y=0; y<h; y++){
620  int v=0;
621  int lt=0, t=0, rt=0;
622 
623  if(y && prev_xc->x == 0){
624  rt= prev_xc->coeff;
625  }
626  for(x=0; x<w; x++){
627  int p=0;
628  const int l= v;
629 
630  lt= t; t= rt;
631 
632  if(y){
633  if(prev_xc->x <= x)
634  prev_xc++;
635  if(prev_xc->x == x + 1)
636  rt= prev_xc->coeff;
637  else
638  rt=0;
639  }
640  if(parent_xc){
641  if(x>>1 > parent_xc->x){
642  parent_xc++;
643  }
644  if(x>>1 == parent_xc->x){
645  p= parent_xc->coeff;
646  }
647  }
648  if(/*ll|*/l|lt|t|rt|p){
649  int context= av_log2(/*FFABS(ll) + */3*(l>>1) + (lt>>1) + (t&~1) + (rt>>1) + (p>>1));
650 
651  v=get_rac(&s->c, &b->state[0][context]);
652  if(v){
653  v= 2*(get_symbol2(&s->c, b->state[context + 2], context-4) + 1);
654  v+=get_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l&0xFF] + 3*ff_quant3bA[t&0xFF]]);
655  if ((uint16_t)v != v) {
656  av_log(s->avctx, AV_LOG_ERROR, "Coefficient damaged\n");
657  v = 1;
658  }
659  xc->x=x;
660  (xc++)->coeff= v;
661  }
662  }else{
663  if(!run){
664  if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
665  else run= INT_MAX;
666  v= 2*(get_symbol2(&s->c, b->state[0 + 2], 0-4) + 1);
667  v+=get_rac(&s->c, &b->state[0][16 + 1 + 3]);
668  if ((uint16_t)v != v) {
669  av_log(s->avctx, AV_LOG_ERROR, "Coefficient damaged\n");
670  v = 1;
671  }
672 
673  xc->x=x;
674  (xc++)->coeff= v;
675  }else{
676  int max_run;
677  run--;
678  v=0;
679  av_assert2(run >= 0);
680  if(y) max_run= FFMIN(run, prev_xc->x - x - 2);
681  else max_run= FFMIN(run, w-x-1);
682  if(parent_xc)
683  max_run= FFMIN(max_run, 2*parent_xc->x - x - 1);
684  av_assert2(max_run >= 0 && max_run <= run);
685 
686  x+= max_run;
687  run-= max_run;
688  }
689  }
690  }
691  (xc++)->x= w+1; //end marker
692  prev_xc= prev2_xc;
693  prev2_xc= xc;
694 
695  if(parent_xc){
696  if(y&1){
697  while(parent_xc->x != parent->width+1)
698  parent_xc++;
699  parent_xc++;
700  prev_parent_xc= parent_xc;
701  }else{
702  parent_xc= prev_parent_xc;
703  }
704  }
705  }
706 
707  (xc++)->x= w+1; //end marker
708 }
709 
710 #endif /* AVCODEC_SNOW_H */
int last_block_max_depth
Definition: snow.h:168
int version
Definition: snow.h:135
MpegEncContext m
Definition: snow.h:183
int mv_scale
Definition: snow.h:160
#define NULL
Definition: coverity.c:32
static av_always_inline void predict_plane(SnowContext *s, IDWTELEM *buf, int plane_index, int add)
Definition: snow.h:455
const char * s
Definition: avisynth_c.h:768
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
AVCodecContext * avctx
Definition: snow.h:116
int block_max_depth
Definition: snow.h:167
#define AV_NUM_DATA_POINTERS
Definition: frame.h:202
int last_spatial_decomposition_count
Definition: snow.h:140
AVFrame * mconly_picture
Definition: snow.h:129
static int shift(int a, int b)
Definition: sonic.c:82
int chroma_v_shift
Definition: snow.h:153
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
int pass1_rc
Definition: snow.h:159
static int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
Definition: snow.h:540
int * run_buffer
Definition: snow.h:150
int always_reset
Definition: snow.h:134
int no_bitstream
Definition: snow.h:177
#define BLOCK_INTRA
Intra block, inter otherwise.
Definition: snow.h:58
IDWTELEM * ibuf
Definition: snow.h:90
Range coder.
#define W_BO
Definition: snow_dwt.h:76
const char * b
Definition: vf_curves.c:113
int av_log2(unsigned v)
Definition: intmath.c:26
int scenechange_threshold
Definition: snow.h:181
#define MAX_PLANES
Definition: snow.h:42
int max_ref_frames
Definition: snow.h:142
mpegvideo header.
int8_t last_hcoeff[HTAPS_MAX/2]
Definition: snow.h:110
static const uint8_t obmc4[16]
Definition: snowdata.h:96
static av_always_inline void snow_horizontal_compose_lift_lead_out(int i, IDWTELEM *dst, IDWTELEM *src, IDWTELEM *ref, int width, int w, int lift_high, int mul, int add, int shift)
Definition: snow.h:218
ptrdiff_t stride
Definition: cfhd.h:46
int keyframe
Definition: snow.h:133
uint8_t run
Definition: svq3.c:206
#define src
Definition: vp8dsp.c:254
static void set_blocks(SnowContext *s, int level, int x, int y, int l, int cb, int cr, int mx, int my, int ref, int type)
Definition: snow.h:462
void(* inner_add_yblock)(const uint8_t *obmc, const int obmc_stride, uint8_t **block, int b_w, int b_h, int src_x, int src_y, int src_stride, slice_buffer *sb, int add, uint8_t *dst8)
Definition: snow_dwt.h:59
short IDWTELEM
Definition: dirac_dwt.h:27
uint8_t * ref[4][4]
Definition: motion_est.h:81
HpelDSPContext hdsp
Definition: snow.h:119
#define log2(x)
Definition: libm.h:404
MECmpContext mecc
Definition: snow.h:118
int ff_snow_common_init_after_header(AVCodecContext *avctx)
Definition: snow.c:514
int qlog
log(qscale)/log[2^(1/6)]
Definition: snow.h:88
Definition: snow.h:51
int width
Definition: cfhd.h:48
#define HTAPS_MAX
Definition: snow.h:76
static int16_t block[64]
Definition: dct.c:115
uint8_t level
Definition: snow.h:61
uint8_t ref
Reference frame index.
Definition: snow.h:54
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:106
int b_height
Definition: snow.h:166
static int get_symbol2(RangeCoder *c, uint8_t *state, int log2)
Definition: snow.h:583
uint8_t
int16_t mx
Motion vector component X, see mv_scale.
Definition: snow.h:52
static int get_rac(RangeCoder *c, uint8_t *const state)
Definition: rangecoder.h:119
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
uint32_t * ref_scores[MAX_REF_FRAMES]
Definition: snow.h:145
#define MB_SIZE
Definition: snow.h:74
Motion estimation context.
Definition: motion_est.h:47
static struct @281 state
static AVFrame * frame
quarterpel DSP functions
int16_t my
Motion vector component Y, see mv_scale.
Definition: snow.h:53
static const BlockNode null_block
Definition: snow.h:64
#define FRAC_BITS
Definition: snow.h:46
int ff_snow_get_buffer(SnowContext *s, AVFrame *frame)
Definition: snow.c:69
static void put_symbol2(RangeCoder *c, uint8_t *state, int v, int log2)
Definition: snow.h:563
#define av_log(a,...)
Definition: cfhd.h:43
BlockNode * block
Definition: snow.h:171
MpegvideoEncDSPContext mpvencdsp
Definition: snow.h:123
int last_diag_mc
Definition: snow.h:111
SnowDWTContext dwt
Definition: snow.h:124
void ff_snow_release_buffer(AVCodecContext *avctx)
Definition: snow.c:640
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int16_t(*[MAX_REF_FRAMES] ref_mvs)[2]
Definition: snow.h:144
unsigned me_cache_generation
Definition: snow.h:174
int avmv_index
Definition: snow.h:189
int diag_mc
Definition: snow.h:106
const char * r
Definition: vf_curves.c:111
AVMotionVector * avmv
Definition: snow.h:188
const uint8_t *const ff_obmc_tab[4]
Definition: snowdata.h:123
uint16_t width
Definition: gdv.c:47
int lambda
Definition: snow.h:157
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
int intra_penalty
Definition: snow.h:178
uint8_t * emu_edge_buffer
Definition: snow.h:186
uint8_t color[3]
Color for intra.
Definition: snow.h:55
int ref_frames
Definition: snow.h:143
x_and_coeff * x_coeff
Definition: snow.h:94
int htaps
Definition: snow.h:104
int qlog
Definition: snow.h:155
uint8_t * src[4][4]
Definition: motion_est.h:80
Half-pel DSP context.
Definition: hpeldsp.h:45
SubBand band[DWT_LEVELS][4]
Definition: cfhd.h:68
const int8_t ff_quant3bA[256]
Definition: snowdata.h:104
#define FFMIN(a, b)
Definition: common.h:96
static void unpack_coeffs(SnowContext *s, SubBand *b, SubBand *parent, int orientation)
Definition: snow.h:603
#define ME_CACHE_SIZE
Definition: snow.h:172
int16_t x
Definition: snow.h:79
uint8_t * scratchbuf
Definition: snow.h:185
Plane plane[MAX_PLANES]
Definition: snow.h:170
static av_always_inline void add_yblock(SnowContext *s, int sliced, slice_buffer *sb, IDWTELEM *dst, uint8_t *dst8, const uint8_t *obmc, int src_x, int src_y, int b_w, int b_h, int w, int h, int dst_stride, int src_stride, int obmc_stride, int b_x, int b_y, int add, int offset_dst, int plane_index)
Definition: snow.h:280
int b_width
Definition: snow.h:165
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
int last_mv_scale
Definition: snow.h:161
int chroma_h_shift
Definition: snow.h:152
VideoDSPContext vdsp
Definition: snow.h:121
uint8_t * halfpel_plane[MAX_REF_FRAMES][4][4]
Definition: snow.h:128
static av_always_inline int same_block(BlockNode *a, BlockNode *b)
Definition: snow.h:270
uint8_t block_state[128+32 *128]
Definition: snow.h:132
int qbias
Definition: snow.h:162
#define W_BS
Definition: snow_dwt.h:77
int ff_scale_mv_ref[MAX_REF_FRAMES][MAX_REF_FRAMES]
Definition: snowdata.h:129
Half-pel DSP functions.
AVCodecContext * avctx
Definition: motion_est.h:48
#define LOG2_OBMC_MAX
Definition: snow.h:49
int spatial_decomposition_count
Definition: snow.h:139
int DWTELEM
Definition: dirac_dwt.h:26
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:232
int debug
debug
Definition: avcodec.h:2582
main external API structure.
Definition: avcodec.h:1502
int8_t hcoeff[HTAPS_MAX/2]
Definition: snow.h:105
static av_always_inline void snow_interleave_line_footer(int *i, IDWTELEM *low, IDWTELEM *high)
Definition: snow.h:211
#define QROOT
Definition: snow.h:44
struct SubBand * parent
Definition: diracdec.c:99
void ff_snow_reset_contexts(SnowContext *s)
Definition: snow.c:96
void * buf
Definition: avisynth_c.h:690
GLint GLenum type
Definition: opengl_enc.c:105
unsigned me_cache[ME_CACHE_SIZE]
Definition: snow.h:173
Describe the class of an AVClass context structure.
Definition: log.h:67
int index
Definition: gxfenc.c:89
int nb_planes
Definition: snow.h:169
int ff_snow_alloc_blocks(SnowContext *s)
Definition: snow.c:110
int pred
Definition: snow.h:192
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: snow.h:487
#define mid_pred
Definition: mathops.h:97
int buf_y_offset
Definition: snow.h:92
DWTELEM * temp_dwt_buffer
Definition: snow.h:147
uint8_t header_state[32]
Definition: snow.h:131
int motion_est
Definition: snow.h:179
int last_qlog
Definition: snow.h:156
uint64_t encoding_error[AV_NUM_DATA_POINTERS]
Definition: snow.h:190
int spatial_scalability
Definition: snow.h:154
quarterpel DSP context
Definition: qpeldsp.h:72
int ff_snow_common_init(AVCodecContext *avctx)
uint16_t coeff
Definition: snow.h:80
int iterative_dia_size
Definition: snow.h:180
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:215
int spatial_decomposition_type
Definition: snow.h:136
AVFrame * current_picture
Definition: snow.h:126
int memc_only
Definition: snow.h:176
uint8_t level
Definition: svq3.c:207
void ff_snow_common_end(SnowContext *s)
Definition: snow.c:693
static av_always_inline void snow_interleave_line_header(int *i, int width, IDWTELEM *low, IDWTELEM *high)
Definition: snow.h:202
#define MAX_DECOMPOSITIONS
Definition: dirac_dwt.h:30
MpegEncContext.
Definition: mpegvideo.h:78
void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, ptrdiff_t stride, int sx, int sy, int b_w, int b_h, const BlockNode *block, int plane_index, int w, int h)
Definition: snow.c:327
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
int temporal_decomposition_type
Definition: snow.h:138
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
IDWTELEM * temp_idwt_buffer
Definition: snow.h:149
H264QpelContext h264qpel
Definition: snow.h:122
static double c[64]
static void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed)
Definition: snow.h:509
#define put_rac(C, S, B)
DWTELEM * spatial_dwt_buffer
Definition: snow.h:146
static void pred_mv(SnowContext *s, int *mx, int *my, int ref, const BlockNode *left, const BlockNode *top, const BlockNode *tr)
Definition: snow.h:254
int lambda2
Definition: snow.h:158
uint8_t state[7+512][32]
Definition: snow.h:96
IDWTELEM * spatial_idwt_buffer
Definition: snow.h:148
void * priv_data
Definition: avcodec.h:1529
int buf_x_offset
Definition: snow.h:91
int colorspace_type
Definition: snow.h:151
int last_htaps
Definition: snow.h:109
int height
Definition: cfhd.h:50
slice_buffer sb
Definition: snow.h:175
static const double coeff[2][5]
Definition: vf_owdenoise.c:72
int fast_mc
Definition: snow.h:107
int width
Definition: cfhd.h:57
RangeCoder c
Definition: snow.h:117
uint8_t ff_qexp[QROOT]
Definition: snowdata.h:128
DWTELEM * buf
Definition: snow.h:89
#define MAX_REF_FRAMES
Definition: snow.h:47
#define av_always_inline
Definition: attributes.h:39
uint8_t type
Bitfield of BLOCK_*.
Definition: snow.h:56
Used to minimize the amount of memory used in order to optimize cache performance.
Definition: snow_dwt.h:42
AVFrame * last_picture[MAX_REF_FRAMES]
Definition: snow.h:127
int height
Definition: cfhd.h:58
int last_qbias
Definition: snow.h:163
static double cr(void *priv, double x, double y)
Definition: vf_geq.c:107
AVFrame * input_picture
new_picture with the internal linesizes
Definition: snow.h:125
int temporal_decomposition_count
Definition: snow.h:141
static av_always_inline void predict_slice(SnowContext *s, IDWTELEM *buf, int plane_index, int add, int mb_y)
Definition: snow.h:404
int ff_snow_frame_start(SnowContext *s)
Definition: snow.c:655
int last_spatial_decomposition_type
Definition: snow.h:137
Definition: cfhd.h:56
int level
Definition: cfhd.h:44
static av_always_inline void snow_horizontal_compose_liftS_lead_out(int i, IDWTELEM *dst, IDWTELEM *src, IDWTELEM *ref, int width, int w)
Definition: snow.h:228
int stride_line
Stride measured in lines, not pixels.
Definition: snow.h:93
QpelDSPContext qdsp
Definition: snow.h:120
static uint8_t tmp[11]
Definition: aes_ctr.c:26