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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 #define FF_MPV_OFFSET(x) (offsetof(MpegEncContext, x) + offsetof(SnowContext, m))
36 #include "mpegvideo.h"
37 #include "h264qpel.h"
38 
39 #define MID_STATE 128
40 
41 #define MAX_PLANES 4
42 #define QSHIFT 5
43 #define QROOT (1<<QSHIFT)
44 #define LOSSLESS_QLOG -128
45 #define FRAC_BITS 4
46 #define MAX_REF_FRAMES 8
47 
48 #define LOG2_OBMC_MAX 8
49 #define OBMC_MAX (1<<(LOG2_OBMC_MAX))
50 typedef struct BlockNode{
51  int16_t mx; ///< Motion vector component X, see mv_scale
52  int16_t my; ///< Motion vector component Y, see mv_scale
53  uint8_t ref; ///< Reference frame index
54  uint8_t color[3]; ///< Color for intra
55  uint8_t type; ///< Bitfield of BLOCK_*
56 //#define TYPE_SPLIT 1
57 #define BLOCK_INTRA 1 ///< Intra block, inter otherwise
58 #define BLOCK_OPT 2 ///< Block needs no checks in this round of iterative motion estiation
59 //#define TYPE_NOCOLOR 4
60  uint8_t level; //FIXME merge into type?
61 }BlockNode;
62 
63 static const BlockNode null_block= { //FIXME add border maybe
64  .color= {128,128,128},
65  .mx= 0,
66  .my= 0,
67  .ref= 0,
68  .type= 0,
69  .level= 0,
70 };
71 
72 #define LOG2_MB_SIZE 4
73 #define MB_SIZE (1<<LOG2_MB_SIZE)
74 #define ENCODER_EXTRA_BITS 4
75 #define HTAPS_MAX 8
76 
77 typedef struct x_and_coeff{
78  int16_t x;
79  uint16_t coeff;
80 } x_and_coeff;
81 
82 typedef struct SubBand{
83  int level;
84  int stride;
85  int width;
86  int height;
87  int qlog; ///< log(qscale)/log[2^(1/6)]
92  int stride_line; ///< Stride measured in lines, not pixels.
94  struct SubBand *parent;
95  uint8_t state[/*7*2*/ 7 + 512][32];
96 }SubBand;
97 
98 typedef struct Plane{
99  int width;
100  int height;
102 
103  int htaps;
104  int8_t hcoeff[HTAPS_MAX/2];
105  int diag_mc;
106  int fast_mc;
107 
111 }Plane;
112 
113 typedef struct SnowContext{
114  AVClass *class;
124  AVFrame *input_picture; ///< new_picture with the internal linesizes
129 // uint8_t q_context[16];
131  uint8_t block_state[128 + 32*128];
132  int keyframe;
134  int version;
143  int16_t (*ref_mvs[MAX_REF_FRAMES])[2];
154  int qlog;
156  int lambda;
157  int lambda2;
158  int pass1_rc;
159  int mv_scale;
161  int qbias;
163 #define QBIAS_SHIFT 3
164  int b_width;
165  int b_height;
171 #define ME_CACHE_SIZE 1024
181 
182  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)
183 
186 
190 
191  int pred;
192 }SnowContext;
193 
194 /* Tables */
195 extern const uint8_t * const ff_obmc_tab[4];
196 extern uint8_t ff_qexp[QROOT];
198 
199 /* C bits used by mmx/sse2/altivec */
200 
201 static av_always_inline void snow_interleave_line_header(int * i, int width, IDWTELEM * low, IDWTELEM * high){
202  (*i) = (width) - 2;
203 
204  if (width & 1){
205  low[(*i)+1] = low[((*i)+1)>>1];
206  (*i)--;
207  }
208 }
209 
210 static av_always_inline void snow_interleave_line_footer(int * i, IDWTELEM * low, IDWTELEM * high){
211  for (; (*i)>=0; (*i)-=2){
212  low[(*i)+1] = high[(*i)>>1];
213  low[*i] = low[(*i)>>1];
214  }
215 }
216 
217 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){
218  for(; i<w; i++){
219  dst[i] = src[i] - ((mul * (ref[i] + ref[i + 1]) + add) >> shift);
220  }
221 
222  if((width^lift_high)&1){
223  dst[w] = src[w] - ((mul * 2 * ref[w] + add) >> shift);
224  }
225 }
226 
228  for(; i<w; i++){
229  dst[i] = src[i] + ((ref[i] + ref[(i+1)]+W_BO + 4 * src[i]) >> W_BS);
230  }
231 
232  if(width&1){
233  dst[w] = src[w] + ((2 * ref[w] + W_BO + 4 * src[w]) >> W_BS);
234  }
235 }
236 
237 /* common code */
238 
246 void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, ptrdiff_t stride,
247  int sx, int sy, int b_w, int b_h, const BlockNode *block,
248  int plane_index, int w, int h);
250 /* common inline functions */
251 //XXX doublecheck all of them should stay inlined
252 
253 static inline void pred_mv(SnowContext *s, int *mx, int *my, int ref,
254  const BlockNode *left, const BlockNode *top, const BlockNode *tr){
255  if(s->ref_frames == 1){
256  *mx = mid_pred(left->mx, top->mx, tr->mx);
257  *my = mid_pred(left->my, top->my, tr->my);
258  }else{
259  const int *scale = ff_scale_mv_ref[ref];
260  *mx = mid_pred((left->mx * scale[left->ref] + 128) >>8,
261  (top ->mx * scale[top ->ref] + 128) >>8,
262  (tr ->mx * scale[tr ->ref] + 128) >>8);
263  *my = mid_pred((left->my * scale[left->ref] + 128) >>8,
264  (top ->my * scale[top ->ref] + 128) >>8,
265  (tr ->my * scale[tr ->ref] + 128) >>8);
266  }
267 }
268 
270  if((a->type&BLOCK_INTRA) && (b->type&BLOCK_INTRA)){
271  return !((a->color[0] - b->color[0]) | (a->color[1] - b->color[1]) | (a->color[2] - b->color[2]));
272  }else{
273  return !((a->mx - b->mx) | (a->my - b->my) | (a->ref - b->ref) | ((a->type ^ b->type)&BLOCK_INTRA));
274  }
275 }
276 
277 //FIXME name cleanup (b_w, block_w, b_width stuff)
278 //XXX should we really inline it?
279 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){
280  const int b_width = s->b_width << s->block_max_depth;
281  const int b_height= s->b_height << s->block_max_depth;
282  const int b_stride= b_width;
283  BlockNode *lt= &s->block[b_x + b_y*b_stride];
284  BlockNode *rt= lt+1;
285  BlockNode *lb= lt+b_stride;
286  BlockNode *rb= lb+1;
287  uint8_t *block[4];
288  // When src_stride is large enough, it is possible to interleave the blocks.
289  // Otherwise the blocks are written sequentially in the tmp buffer.
290  int tmp_step= src_stride >= 7*MB_SIZE ? MB_SIZE : MB_SIZE*src_stride;
291  uint8_t *tmp = s->scratchbuf;
292  uint8_t *ptmp;
293  int x,y;
294 
295  if(b_x<0){
296  lt= rt;
297  lb= rb;
298  }else if(b_x + 1 >= b_width){
299  rt= lt;
300  rb= lb;
301  }
302  if(b_y<0){
303  lt= lb;
304  rt= rb;
305  }else if(b_y + 1 >= b_height){
306  lb= lt;
307  rb= rt;
308  }
309 
310  if(src_x<0){ //FIXME merge with prev & always round internal width up to *16
311  obmc -= src_x;
312  b_w += src_x;
313  if(!sliced && !offset_dst)
314  dst -= src_x;
315  src_x=0;
316  }
317  if(src_x + b_w > w){
318  b_w = w - src_x;
319  }
320  if(src_y<0){
321  obmc -= src_y*obmc_stride;
322  b_h += src_y;
323  if(!sliced && !offset_dst)
324  dst -= src_y*dst_stride;
325  src_y=0;
326  }
327  if(src_y + b_h> h){
328  b_h = h - src_y;
329  }
330 
331  if(b_w<=0 || b_h<=0) return;
332 
333  if(!sliced && offset_dst)
334  dst += src_x + src_y*dst_stride;
335  dst8+= src_x + src_y*src_stride;
336 // src += src_x + src_y*src_stride;
337 
338  ptmp= tmp + 3*tmp_step;
339  block[0]= ptmp;
340  ptmp+=tmp_step;
341  ff_snow_pred_block(s, block[0], tmp, src_stride, src_x, src_y, b_w, b_h, lt, plane_index, w, h);
342 
343  if(same_block(lt, rt)){
344  block[1]= block[0];
345  }else{
346  block[1]= ptmp;
347  ptmp+=tmp_step;
348  ff_snow_pred_block(s, block[1], tmp, src_stride, src_x, src_y, b_w, b_h, rt, plane_index, w, h);
349  }
350 
351  if(same_block(lt, lb)){
352  block[2]= block[0];
353  }else if(same_block(rt, lb)){
354  block[2]= block[1];
355  }else{
356  block[2]= ptmp;
357  ptmp+=tmp_step;
358  ff_snow_pred_block(s, block[2], tmp, src_stride, src_x, src_y, b_w, b_h, lb, plane_index, w, h);
359  }
360 
361  if(same_block(lt, rb) ){
362  block[3]= block[0];
363  }else if(same_block(rt, rb)){
364  block[3]= block[1];
365  }else if(same_block(lb, rb)){
366  block[3]= block[2];
367  }else{
368  block[3]= ptmp;
369  ff_snow_pred_block(s, block[3], tmp, src_stride, src_x, src_y, b_w, b_h, rb, plane_index, w, h);
370  }
371  if(sliced){
372  s->dwt.inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
373  }else{
374  for(y=0; y<b_h; y++){
375  //FIXME ugly misuse of obmc_stride
376  const uint8_t *obmc1= obmc + y*obmc_stride;
377  const uint8_t *obmc2= obmc1+ (obmc_stride>>1);
378  const uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1);
379  const uint8_t *obmc4= obmc3+ (obmc_stride>>1);
380  for(x=0; x<b_w; x++){
381  int v= obmc1[x] * block[3][x + y*src_stride]
382  +obmc2[x] * block[2][x + y*src_stride]
383  +obmc3[x] * block[1][x + y*src_stride]
384  +obmc4[x] * block[0][x + y*src_stride];
385 
386  v <<= 8 - LOG2_OBMC_MAX;
387  if(FRAC_BITS != 8){
388  v >>= 8 - FRAC_BITS;
389  }
390  if(add){
391  v += dst[x + y*dst_stride];
392  v = (v + (1<<(FRAC_BITS-1))) >> FRAC_BITS;
393  if(v&(~255)) v= ~(v>>31);
394  dst8[x + y*src_stride] = v;
395  }else{
396  dst[x + y*dst_stride] -= v;
397  }
398  }
399  }
400  }
401 }
402 
403 static av_always_inline void predict_slice(SnowContext *s, IDWTELEM *buf, int plane_index, int add, int mb_y){
404  Plane *p= &s->plane[plane_index];
405  const int mb_w= s->b_width << s->block_max_depth;
406  const int mb_h= s->b_height << s->block_max_depth;
407  int x, y, mb_x;
408  int block_size = MB_SIZE >> s->block_max_depth;
409  int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
410  int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
411  const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
412  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
413  int ref_stride= s->current_picture->linesize[plane_index];
414  uint8_t *dst8= s->current_picture->data[plane_index];
415  int w= p->width;
416  int h= p->height;
417  av_assert2(s->chroma_h_shift == s->chroma_v_shift); // obmc params assume squares
418  if(s->keyframe || (s->avctx->debug&512)){
419  if(mb_y==mb_h)
420  return;
421 
422  if(add){
423  for(y=block_h*mb_y; y<FFMIN(h,block_h*(mb_y+1)); y++){
424  for(x=0; x<w; x++){
425  int v= buf[x + y*w] + (128<<FRAC_BITS) + (1<<(FRAC_BITS-1));
426  v >>= FRAC_BITS;
427  if(v&(~255)) v= ~(v>>31);
428  dst8[x + y*ref_stride]= v;
429  }
430  }
431  }else{
432  for(y=block_h*mb_y; y<FFMIN(h,block_h*(mb_y+1)); y++){
433  for(x=0; x<w; x++){
434  buf[x + y*w]-= 128<<FRAC_BITS;
435  }
436  }
437  }
438 
439  return;
440  }
441 
442  for(mb_x=0; mb_x<=mb_w; mb_x++){
443  add_yblock(s, 0, NULL, buf, dst8, obmc,
444  block_w*mb_x - block_w/2,
445  block_h*mb_y - block_h/2,
446  block_w, block_h,
447  w, h,
448  w, ref_stride, obmc_stride,
449  mb_x - 1, mb_y - 1,
450  add, 1, plane_index);
451  }
452 }
453 
454 static av_always_inline void predict_plane(SnowContext *s, IDWTELEM *buf, int plane_index, int add){
455  const int mb_h= s->b_height << s->block_max_depth;
456  int mb_y;
457  for(mb_y=0; mb_y<=mb_h; mb_y++)
458  predict_slice(s, buf, plane_index, add, mb_y);
459 }
460 
461 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){
462  const int w= s->b_width << s->block_max_depth;
463  const int rem_depth= s->block_max_depth - level;
464  const int index= (x + y*w) << rem_depth;
465  const int block_w= 1<<rem_depth;
466  const int block_h= 1<<rem_depth; //FIXME "w!=h"
468  int i,j;
469 
470  block.color[0]= l;
471  block.color[1]= cb;
472  block.color[2]= cr;
473  block.mx= mx;
474  block.my= my;
475  block.ref= ref;
476  block.type= type;
477  block.level= level;
478 
479  for(j=0; j<block_h; j++){
480  for(i=0; i<block_w; i++){
481  s->block[index + i + j*w]= block;
482  }
483  }
484 }
485 
486 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){
487  SnowContext *s = c->avctx->priv_data;
488  const int offset[3]= {
489  y*c-> stride + x,
490  ((y*c->uvstride + x)>>s->chroma_h_shift),
491  ((y*c->uvstride + x)>>s->chroma_h_shift),
492  };
493  int i;
494  for(i=0; i<3; i++){
495  c->src[0][i]= src [i];
496  c->ref[0][i]= ref [i] + offset[i];
497  }
498  av_assert2(!ref_index);
499 }
500 
501 
502 /* bitstream functions */
503 
504 extern const int8_t ff_quant3bA[256];
505 
506 #define QEXPSHIFT (7-FRAC_BITS+8) //FIXME try to change this to 0
507 
508 static inline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){
509  int i;
510 
511  if(v){
512  const int a= FFABS(v);
513  const int e= av_log2(a);
514  const int el= FFMIN(e, 10);
515  put_rac(c, state+0, 0);
516 
517  for(i=0; i<el; i++){
518  put_rac(c, state+1+i, 1); //1..10
519  }
520  for(; i<e; i++){
521  put_rac(c, state+1+9, 1); //1..10
522  }
523  put_rac(c, state+1+FFMIN(i,9), 0);
524 
525  for(i=e-1; i>=el; i--){
526  put_rac(c, state+22+9, (a>>i)&1); //22..31
527  }
528  for(; i>=0; i--){
529  put_rac(c, state+22+i, (a>>i)&1); //22..31
530  }
531 
532  if(is_signed)
533  put_rac(c, state+11 + el, v < 0); //11..21
534  }else{
535  put_rac(c, state+0, 1);
536  }
537 }
538 
539 static inline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed){
540  if(get_rac(c, state+0))
541  return 0;
542  else{
543  int i, e, a;
544  e= 0;
545  while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10
546  e++;
547  if (e > 31)
548  return AVERROR_INVALIDDATA;
549  }
550 
551  a= 1;
552  for(i=e-1; i>=0; i--){
553  a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31
554  }
555 
556  e= -(is_signed && get_rac(c, state+11 + FFMIN(e,10))); //11..21
557  return (a^e)-e;
558  }
559 }
560 
561 static inline void put_symbol2(RangeCoder *c, uint8_t *state, int v, int log2){
562  int i;
563  int r= log2>=0 ? 1<<log2 : 1;
564 
565  av_assert2(v>=0);
566  av_assert2(log2>=-4);
567 
568  while(v >= r){
569  put_rac(c, state+4+log2, 1);
570  v -= r;
571  log2++;
572  if(log2>0) r+=r;
573  }
574  put_rac(c, state+4+log2, 0);
575 
576  for(i=log2-1; i>=0; i--){
577  put_rac(c, state+31-i, (v>>i)&1);
578  }
579 }
580 
581 static inline int get_symbol2(RangeCoder *c, uint8_t *state, int log2){
582  int i;
583  int r= log2>=0 ? 1<<log2 : 1;
584  int v=0;
585 
586  av_assert2(log2>=-4);
587 
588  while(log2<28 && get_rac(c, state+4+log2)){
589  v+= r;
590  log2++;
591  if(log2>0) r+=r;
592  }
593 
594  for(i=log2-1; i>=0; i--){
595  v+= get_rac(c, state+31-i)<<i;
596  }
597 
598  return v;
599 }
600 
601 static inline void unpack_coeffs(SnowContext *s, SubBand *b, SubBand * parent, int orientation){
602  const int w= b->width;
603  const int h= b->height;
604  int x,y;
605 
606  int run, runs;
607  x_and_coeff *xc= b->x_coeff;
608  x_and_coeff *prev_xc= NULL;
609  x_and_coeff *prev2_xc= xc;
610  x_and_coeff *parent_xc= parent ? parent->x_coeff : NULL;
611  x_and_coeff *prev_parent_xc= parent_xc;
612 
613  runs= get_symbol2(&s->c, b->state[30], 0);
614  if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
615  else run= INT_MAX;
616 
617  for(y=0; y<h; y++){
618  int v=0;
619  int lt=0, t=0, rt=0;
620 
621  if(y && prev_xc->x == 0){
622  rt= prev_xc->coeff;
623  }
624  for(x=0; x<w; x++){
625  int p=0;
626  const int l= v;
627 
628  lt= t; t= rt;
629 
630  if(y){
631  if(prev_xc->x <= x)
632  prev_xc++;
633  if(prev_xc->x == x + 1)
634  rt= prev_xc->coeff;
635  else
636  rt=0;
637  }
638  if(parent_xc){
639  if(x>>1 > parent_xc->x){
640  parent_xc++;
641  }
642  if(x>>1 == parent_xc->x){
643  p= parent_xc->coeff;
644  }
645  }
646  if(/*ll|*/l|lt|t|rt|p){
647  int context= av_log2(/*FFABS(ll) + */3*(l>>1) + (lt>>1) + (t&~1) + (rt>>1) + (p>>1));
648 
649  v=get_rac(&s->c, &b->state[0][context]);
650  if(v){
651  v= 2*(get_symbol2(&s->c, b->state[context + 2], context-4) + 1);
652  v+=get_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l&0xFF] + 3*ff_quant3bA[t&0xFF]]);
653  if ((uint16_t)v != v) {
654  av_log(s->avctx, AV_LOG_ERROR, "Coefficient damaged\n");
655  v = 1;
656  }
657  xc->x=x;
658  (xc++)->coeff= v;
659  }
660  }else{
661  if(!run){
662  if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
663  else run= INT_MAX;
664  v= 2*(get_symbol2(&s->c, b->state[0 + 2], 0-4) + 1);
665  v+=get_rac(&s->c, &b->state[0][16 + 1 + 3]);
666  if ((uint16_t)v != v) {
667  av_log(s->avctx, AV_LOG_ERROR, "Coefficient damaged\n");
668  v = 1;
669  }
670 
671  xc->x=x;
672  (xc++)->coeff= v;
673  }else{
674  int max_run;
675  run--;
676  v=0;
677  av_assert2(run >= 0);
678  if(y) max_run= FFMIN(run, prev_xc->x - x - 2);
679  else max_run= FFMIN(run, w-x-1);
680  if(parent_xc)
681  max_run= FFMIN(max_run, 2*parent_xc->x - x - 1);
682  av_assert2(max_run >= 0 && max_run <= run);
683 
684  x+= max_run;
685  run-= max_run;
686  }
687  }
688  }
689  (xc++)->x= w+1; //end marker
690  prev_xc= prev2_xc;
691  prev2_xc= xc;
692 
693  if(parent_xc){
694  if(y&1){
695  while(parent_xc->x != parent->width+1)
696  parent_xc++;
697  parent_xc++;
698  prev_parent_xc= parent_xc;
699  }else{
700  parent_xc= prev_parent_xc;
701  }
702  }
703  }
704 
705  (xc++)->x= w+1; //end marker
706 }
707 
708 #endif /* AVCODEC_SNOW_H */
int last_block_max_depth
Definition: snow.h:167
int version
Definition: snow.h:134
MpegEncContext m
Definition: snow.h:182
int mv_scale
Definition: snow.h:159
#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:454
const char * s
Definition: avisynth_c.h:631
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
AVCodecContext * avctx
Definition: snow.h:115
int block_max_depth
Definition: snow.h:166
#define AV_NUM_DATA_POINTERS
Definition: frame.h:185
int last_spatial_decomposition_count
Definition: snow.h:139
AVFrame * mconly_picture
Definition: snow.h:128
static int shift(int a, int b)
Definition: sonic.c:82
int chroma_v_shift
Definition: snow.h:152
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
int pass1_rc
Definition: snow.h:158
static int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
Definition: snow.h:539
int * run_buffer
Definition: snow.h:149
int always_reset
Definition: snow.h:133
int no_bitstream
Definition: snow.h:176
#define BLOCK_INTRA
Intra block, inter otherwise.
Definition: snow.h:57
IDWTELEM * ibuf
Definition: snow.h:89
Range coder.
#define W_BO
Definition: snow_dwt.h:76
const char * b
Definition: vf_curves.c:109
int av_log2(unsigned v)
Definition: intmath.c:26
int scenechange_threshold
Definition: snow.h:180
#define MAX_PLANES
Definition: snow.h:41
int max_ref_frames
Definition: snow.h:141
mpegvideo header.
int8_t last_hcoeff[HTAPS_MAX/2]
Definition: snow.h:109
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:217
int keyframe
Definition: snow.h:132
uint8_t run
Definition: svq3.c:192
static void set_blocks(SnowContext *s, int level, int x, int y, int l, int cb, int cr, int mx, int my, int ref, int type)
Definition: snow.h:461
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:118
#define log2(x)
Definition: libm.h:404
MECmpContext mecc
Definition: snow.h:117
int ff_snow_common_init_after_header(AVCodecContext *avctx)
Definition: snow.c:514
int qlog
log(qscale)/log[2^(1/6)]
Definition: snow.h:87
Definition: snow.h:50
int width
Definition: cfhd.h:48
#define HTAPS_MAX
Definition: snow.h:75
static int16_t block[64]
Definition: dct.c:113
uint8_t level
Definition: snow.h:60
uint8_t ref
Reference frame index.
Definition: snow.h:53
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:97
int b_height
Definition: snow.h:165
static int get_symbol2(RangeCoder *c, uint8_t *state, int log2)
Definition: snow.h:581
uint8_t
int16_t mx
Motion vector component X, see mv_scale.
Definition: snow.h:51
static int get_rac(RangeCoder *c, uint8_t *const state)
Definition: rangecoder.h:115
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:63
uint32_t * ref_scores[MAX_REF_FRAMES]
Definition: snow.h:144
#define MB_SIZE
Definition: snow.h:73
Motion estimation context.
Definition: motion_est.h:47
static AVFrame * frame
quarterpel DSP functions
int16_t my
Motion vector component Y, see mv_scale.
Definition: snow.h:52
static const BlockNode null_block
Definition: snow.h:63
#define FRAC_BITS
Definition: snow.h:45
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:561
#define av_log(a,...)
Definition: cfhd.h:43
BlockNode * block
Definition: snow.h:170
MpegvideoEncDSPContext mpvencdsp
Definition: snow.h:122
int last_diag_mc
Definition: snow.h:110
SnowDWTContext dwt
Definition: snow.h:123
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:143
unsigned me_cache_generation
Definition: snow.h:173
int avmv_index
Definition: snow.h:188
int diag_mc
Definition: snow.h:105
const char * r
Definition: vf_curves.c:107
AVMotionVector * avmv
Definition: snow.h:187
const uint8_t *const ff_obmc_tab[4]
Definition: snowdata.h:123
int stride
Definition: cfhd.h:46
int lambda
Definition: snow.h:156
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
int intra_penalty
Definition: snow.h:177
uint8_t * emu_edge_buffer
Definition: snow.h:185
uint8_t color[3]
Color for intra.
Definition: snow.h:54
int ref_frames
Definition: snow.h:142
x_and_coeff * x_coeff
Definition: snow.h:93
int htaps
Definition: snow.h:103
int qlog
Definition: snow.h:154
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:601
#define width
#define ME_CACHE_SIZE
Definition: snow.h:171
int16_t x
Definition: snow.h:78
uint8_t * scratchbuf
Definition: snow.h:184
Plane plane[MAX_PLANES]
Definition: snow.h:169
static av_always_inline void add_yblock(SnowContext *s, int sliced, slice_buffer *sb, IDWTELEM *dst, uint8_t *dst8, const uint8_t *obmc, int src_x, int src_y, int b_w, int b_h, int w, int h, int dst_stride, int src_stride, int obmc_stride, int b_x, int b_y, int add, int offset_dst, int plane_index)
Definition: snow.h:279
int b_width
Definition: snow.h:164
#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:160
#define src
Definition: vp9dsp.c:530
int chroma_h_shift
Definition: snow.h:151
VideoDSPContext vdsp
Definition: snow.h:120
uint8_t * halfpel_plane[MAX_REF_FRAMES][4][4]
Definition: snow.h:127
static av_always_inline int same_block(BlockNode *a, BlockNode *b)
Definition: snow.h:269
uint8_t block_state[128+32 *128]
Definition: snow.h:131
int qbias
Definition: snow.h:161
#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:48
int spatial_decomposition_count
Definition: snow.h:138
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:215
int debug
debug
Definition: avcodec.h:2888
main external API structure.
Definition: avcodec.h:1649
int8_t hcoeff[HTAPS_MAX/2]
Definition: snow.h:104
static av_always_inline void snow_interleave_line_footer(int *i, IDWTELEM *low, IDWTELEM *high)
Definition: snow.h:210
#define QROOT
Definition: snow.h:43
struct SubBand * parent
Definition: diracdec.c:96
void ff_snow_reset_contexts(SnowContext *s)
Definition: snow.c:96
void * buf
Definition: avisynth_c.h:553
GLint GLenum type
Definition: opengl_enc.c:105
unsigned me_cache[ME_CACHE_SIZE]
Definition: snow.h:172
Describe the class of an AVClass context structure.
Definition: log.h:67
int index
Definition: gxfenc.c:89
int nb_planes
Definition: snow.h:168
int ff_snow_alloc_blocks(SnowContext *s)
Definition: snow.c:110
int pred
Definition: snow.h:191
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:486
#define mid_pred
Definition: mathops.h:96
int buf_y_offset
Definition: snow.h:91
DWTELEM * temp_dwt_buffer
Definition: snow.h:146
uint8_t header_state[32]
Definition: snow.h:130
int motion_est
Definition: snow.h:178
int last_qlog
Definition: snow.h:155
uint64_t encoding_error[AV_NUM_DATA_POINTERS]
Definition: snow.h:189
int spatial_scalability
Definition: snow.h:153
quarterpel DSP context
Definition: qpeldsp.h:72
int ff_snow_common_init(AVCodecContext *avctx)
uint16_t coeff
Definition: snow.h:79
int iterative_dia_size
Definition: snow.h:179
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:198
int spatial_decomposition_type
Definition: snow.h:135
AVFrame * current_picture
Definition: snow.h:125
int memc_only
Definition: snow.h:175
uint8_t level
Definition: svq3.c:193
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:201
#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:137
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
IDWTELEM * temp_idwt_buffer
Definition: snow.h:148
H264QpelContext h264qpel
Definition: snow.h:121
static double c[64]
static void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed)
Definition: snow.h:508
static struct @229 state
#define put_rac(C, S, B)
DWTELEM * spatial_dwt_buffer
Definition: snow.h:145
static void pred_mv(SnowContext *s, int *mx, int *my, int ref, const BlockNode *left, const BlockNode *top, const BlockNode *tr)
Definition: snow.h:253
int lambda2
Definition: snow.h:157
uint8_t state[7+512][32]
Definition: snow.h:95
IDWTELEM * spatial_idwt_buffer
Definition: snow.h:147
void * priv_data
Definition: avcodec.h:1691
int buf_x_offset
Definition: snow.h:90
int colorspace_type
Definition: snow.h:150
static uint8_t tmp[8]
Definition: des.c:38
int last_htaps
Definition: snow.h:108
int height
Definition: cfhd.h:50
slice_buffer sb
Definition: snow.h:174
static const double coeff[2][5]
Definition: vf_owdenoise.c:71
int fast_mc
Definition: snow.h:106
int width
Definition: cfhd.h:57
RangeCoder c
Definition: snow.h:116
uint8_t ff_qexp[QROOT]
Definition: snowdata.h:128
DWTELEM * buf
Definition: snow.h:88
#define MAX_REF_FRAMES
Definition: snow.h:46
#define av_always_inline
Definition: attributes.h:39
uint8_t type
Bitfield of BLOCK_*.
Definition: snow.h:55
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:126
int height
Definition: cfhd.h:58
int last_qbias
Definition: snow.h:162
static double cr(void *priv, double x, double y)
Definition: vf_geq.c:98
AVFrame * input_picture
new_picture with the internal linesizes
Definition: snow.h:124
int temporal_decomposition_count
Definition: snow.h:140
static av_always_inline void predict_slice(SnowContext *s, IDWTELEM *buf, int plane_index, int add, int mb_y)
Definition: snow.h:403
int ff_snow_frame_start(SnowContext *s)
Definition: snow.c:655
int last_spatial_decomposition_type
Definition: snow.h:136
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:227
int stride_line
Stride measured in lines, not pixels.
Definition: snow.h:92
QpelDSPContext qdsp
Definition: snow.h:119