FFmpeg  4.3.7
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;
102  SubBand band[MAX_DECOMPOSITIONS][4];
103 
104  int htaps;
105  int8_t hcoeff[HTAPS_MAX/2];
106  int diag_mc;
107  int fast_mc;
108 
110  int8_t last_hcoeff[HTAPS_MAX/2];
112 }Plane;
113 
114 typedef struct SnowContext{
115  AVClass *class;
125  AVFrame *input_picture; ///< new_picture with the internal linesizes
128  uint8_t *halfpel_plane[MAX_REF_FRAMES][4][4];
130 // uint8_t q_context[16];
131  uint8_t header_state[32];
132  uint8_t block_state[128 + 32*128];
133  int keyframe;
135  int version;
144  int16_t (*ref_mvs[MAX_REF_FRAMES])[2];
145  uint32_t *ref_scores[MAX_REF_FRAMES];
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
173  unsigned me_cache[ME_CACHE_SIZE];
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 
189  unsigned avmv_size;
191  uint64_t encoding_error[AV_NUM_DATA_POINTERS];
192 
193  int pred;
194 }SnowContext;
195 
196 /* Tables */
197 extern const uint8_t * const ff_obmc_tab[4];
198 extern uint8_t ff_qexp[QROOT];
200 
201 /* C bits used by mmx/sse2/altivec */
202 
203 static av_always_inline void snow_interleave_line_header(int * i, int width, IDWTELEM * low, IDWTELEM * high){
204  (*i) = (width) - 2;
205 
206  if (width & 1){
207  low[(*i)+1] = low[((*i)+1)>>1];
208  (*i)--;
209  }
210 }
211 
213  for (; (*i)>=0; (*i)-=2){
214  low[(*i)+1] = high[(*i)>>1];
215  low[*i] = low[(*i)>>1];
216  }
217 }
218 
219 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){
220  for(; i<w; i++){
221  dst[i] = src[i] - ((mul * (ref[i] + ref[i + 1]) + add) >> shift);
222  }
223 
224  if((width^lift_high)&1){
225  dst[w] = src[w] - ((mul * 2 * ref[w] + add) >> shift);
226  }
227 }
228 
230  for(; i<w; i++){
231  dst[i] = src[i] + ((ref[i] + ref[(i+1)]+W_BO + 4 * src[i]) >> W_BS);
232  }
233 
234  if(width&1){
235  dst[w] = src[w] + ((2 * ref[w] + W_BO + 4 * src[w]) >> W_BS);
236  }
237 }
238 
239 /* common code */
240 
248 void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, ptrdiff_t stride,
249  int sx, int sy, int b_w, int b_h, const BlockNode *block,
250  int plane_index, int w, int h);
252 /* common inline functions */
253 //XXX doublecheck all of them should stay inlined
254 
255 static inline void pred_mv(SnowContext *s, int *mx, int *my, int ref,
256  const BlockNode *left, const BlockNode *top, const BlockNode *tr){
257  if(s->ref_frames == 1){
258  *mx = mid_pred(left->mx, top->mx, tr->mx);
259  *my = mid_pred(left->my, top->my, tr->my);
260  }else{
261  const int *scale = ff_scale_mv_ref[ref];
262  *mx = mid_pred((left->mx * scale[left->ref] + 128) >>8,
263  (top ->mx * scale[top ->ref] + 128) >>8,
264  (tr ->mx * scale[tr ->ref] + 128) >>8);
265  *my = mid_pred((left->my * scale[left->ref] + 128) >>8,
266  (top ->my * scale[top ->ref] + 128) >>8,
267  (tr ->my * scale[tr ->ref] + 128) >>8);
268  }
269 }
270 
272  if((a->type&BLOCK_INTRA) && (b->type&BLOCK_INTRA)){
273  return !((a->color[0] - b->color[0]) | (a->color[1] - b->color[1]) | (a->color[2] - b->color[2]));
274  }else{
275  return !((a->mx - b->mx) | (a->my - b->my) | (a->ref - b->ref) | ((a->type ^ b->type)&BLOCK_INTRA));
276  }
277 }
278 
279 //FIXME name cleanup (b_w, block_w, b_width stuff)
280 //XXX should we really inline it?
281 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){
282  const int b_width = s->b_width << s->block_max_depth;
283  const int b_height= s->b_height << s->block_max_depth;
284  const int b_stride= b_width;
285  BlockNode *lt= &s->block[b_x + b_y*b_stride];
286  BlockNode *rt= lt+1;
287  BlockNode *lb= lt+b_stride;
288  BlockNode *rb= lb+1;
289  uint8_t *block[4];
290  // When src_stride is large enough, it is possible to interleave the blocks.
291  // Otherwise the blocks are written sequentially in the tmp buffer.
292  int tmp_step= src_stride >= 7*MB_SIZE ? MB_SIZE : MB_SIZE*src_stride;
293  uint8_t *tmp = s->scratchbuf;
294  uint8_t *ptmp;
295  int x,y;
296 
297  if(b_x<0){
298  lt= rt;
299  lb= rb;
300  }else if(b_x + 1 >= b_width){
301  rt= lt;
302  rb= lb;
303  }
304  if(b_y<0){
305  lt= lb;
306  rt= rb;
307  }else if(b_y + 1 >= b_height){
308  lb= lt;
309  rb= rt;
310  }
311 
312  if(src_x<0){ //FIXME merge with prev & always round internal width up to *16
313  obmc -= src_x;
314  b_w += src_x;
315  if(!sliced && !offset_dst)
316  dst -= src_x;
317  src_x=0;
318  }
319  if(src_x + b_w > w){
320  b_w = w - src_x;
321  }
322  if(src_y<0){
323  obmc -= src_y*obmc_stride;
324  b_h += src_y;
325  if(!sliced && !offset_dst)
326  dst -= src_y*dst_stride;
327  src_y=0;
328  }
329  if(src_y + b_h> h){
330  b_h = h - src_y;
331  }
332 
333  if(b_w<=0 || b_h<=0) return;
334 
335  if(!sliced && offset_dst)
336  dst += src_x + src_y*dst_stride;
337  dst8+= src_x + src_y*src_stride;
338 // src += src_x + src_y*src_stride;
339 
340  ptmp= tmp + 3*tmp_step;
341  block[0]= ptmp;
342  ptmp+=tmp_step;
343  ff_snow_pred_block(s, block[0], tmp, src_stride, src_x, src_y, b_w, b_h, lt, plane_index, w, h);
344 
345  if(same_block(lt, rt)){
346  block[1]= block[0];
347  }else{
348  block[1]= ptmp;
349  ptmp+=tmp_step;
350  ff_snow_pred_block(s, block[1], tmp, src_stride, src_x, src_y, b_w, b_h, rt, plane_index, w, h);
351  }
352 
353  if(same_block(lt, lb)){
354  block[2]= block[0];
355  }else if(same_block(rt, lb)){
356  block[2]= block[1];
357  }else{
358  block[2]= ptmp;
359  ptmp+=tmp_step;
360  ff_snow_pred_block(s, block[2], tmp, src_stride, src_x, src_y, b_w, b_h, lb, plane_index, w, h);
361  }
362 
363  if(same_block(lt, rb) ){
364  block[3]= block[0];
365  }else if(same_block(rt, rb)){
366  block[3]= block[1];
367  }else if(same_block(lb, rb)){
368  block[3]= block[2];
369  }else{
370  block[3]= ptmp;
371  ff_snow_pred_block(s, block[3], tmp, src_stride, src_x, src_y, b_w, b_h, rb, plane_index, w, h);
372  }
373  if(sliced){
374  s->dwt.inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
375  }else{
376  for(y=0; y<b_h; y++){
377  //FIXME ugly misuse of obmc_stride
378  const uint8_t *obmc1= obmc + y*obmc_stride;
379  const uint8_t *obmc2= obmc1+ (obmc_stride>>1);
380  const uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1);
381  const uint8_t *obmc4= obmc3+ (obmc_stride>>1);
382  for(x=0; x<b_w; x++){
383  int v= obmc1[x] * block[3][x + y*src_stride]
384  +obmc2[x] * block[2][x + y*src_stride]
385  +obmc3[x] * block[1][x + y*src_stride]
386  +obmc4[x] * block[0][x + y*src_stride];
387 
388  v <<= 8 - LOG2_OBMC_MAX;
389  if(FRAC_BITS != 8){
390  v >>= 8 - FRAC_BITS;
391  }
392  if(add){
393  v += dst[x + y*dst_stride];
394  v = (v + (1<<(FRAC_BITS-1))) >> FRAC_BITS;
395  if(v&(~255)) v= ~(v>>31);
396  dst8[x + y*src_stride] = v;
397  }else{
398  dst[x + y*dst_stride] -= v;
399  }
400  }
401  }
402  }
403 }
404 
405 static av_always_inline void predict_slice(SnowContext *s, IDWTELEM *buf, int plane_index, int add, int mb_y){
406  Plane *p= &s->plane[plane_index];
407  const int mb_w= s->b_width << s->block_max_depth;
408  const int mb_h= s->b_height << s->block_max_depth;
409  int x, y, mb_x;
410  int block_size = MB_SIZE >> s->block_max_depth;
411  int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
412  int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
413  const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
414  const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
415  int ref_stride= s->current_picture->linesize[plane_index];
416  uint8_t *dst8= s->current_picture->data[plane_index];
417  int w= p->width;
418  int h= p->height;
419  av_assert2(s->chroma_h_shift == s->chroma_v_shift); // obmc params assume squares
420  if(s->keyframe || (s->avctx->debug&512)){
421  if(mb_y==mb_h)
422  return;
423 
424  if(add){
425  for(y=block_h*mb_y; y<FFMIN(h,block_h*(mb_y+1)); y++){
426  for(x=0; x<w; x++){
427  int v= buf[x + y*w] + (128<<FRAC_BITS) + (1<<(FRAC_BITS-1));
428  v >>= FRAC_BITS;
429  if(v&(~255)) v= ~(v>>31);
430  dst8[x + y*ref_stride]= v;
431  }
432  }
433  }else{
434  for(y=block_h*mb_y; y<FFMIN(h,block_h*(mb_y+1)); y++){
435  for(x=0; x<w; x++){
436  buf[x + y*w]-= 128<<FRAC_BITS;
437  }
438  }
439  }
440 
441  return;
442  }
443 
444  for(mb_x=0; mb_x<=mb_w; mb_x++){
445  add_yblock(s, 0, NULL, buf, dst8, obmc,
446  block_w*mb_x - block_w/2,
447  block_h*mb_y - block_h/2,
448  block_w, block_h,
449  w, h,
450  w, ref_stride, obmc_stride,
451  mb_x - 1, mb_y - 1,
452  add, 1, plane_index);
453  }
454 }
455 
456 static av_always_inline void predict_plane(SnowContext *s, IDWTELEM *buf, int plane_index, int add){
457  const int mb_h= s->b_height << s->block_max_depth;
458  int mb_y;
459  for(mb_y=0; mb_y<=mb_h; mb_y++)
460  predict_slice(s, buf, plane_index, add, mb_y);
461 }
462 
463 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){
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  const int block_w= 1<<rem_depth;
468  const int block_h= 1<<rem_depth; //FIXME "w!=h"
470  int i,j;
471 
472  block.color[0]= l;
473  block.color[1]= cb;
474  block.color[2]= cr;
475  block.mx= mx;
476  block.my= my;
477  block.ref= ref;
478  block.type= type;
479  block.level= level;
480 
481  for(j=0; j<block_h; j++){
482  for(i=0; i<block_w; i++){
483  s->block[index + i + j*w]= block;
484  }
485  }
486 }
487 
488 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){
489  SnowContext *s = c->avctx->priv_data;
490  const int offset[3]= {
491  y*c-> stride + x,
492  ((y*c->uvstride + x)>>s->chroma_h_shift),
493  ((y*c->uvstride + x)>>s->chroma_h_shift),
494  };
495  int i;
496  for(i=0; i<3; i++){
497  c->src[0][i]= src [i];
498  c->ref[0][i]= ref [i] + offset[i];
499  }
500  av_assert2(!ref_index);
501 }
502 
503 
504 /* bitstream functions */
505 
506 extern const int8_t ff_quant3bA[256];
507 
508 #define QEXPSHIFT (7-FRAC_BITS+8) //FIXME try to change this to 0
509 
510 static inline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){
511  int i;
512 
513  if(v){
514  const int a= FFABS(v);
515  const int e= av_log2(a);
516  const int el= FFMIN(e, 10);
517  put_rac(c, state+0, 0);
518 
519  for(i=0; i<el; i++){
520  put_rac(c, state+1+i, 1); //1..10
521  }
522  for(; i<e; i++){
523  put_rac(c, state+1+9, 1); //1..10
524  }
525  put_rac(c, state+1+FFMIN(i,9), 0);
526 
527  for(i=e-1; i>=el; i--){
528  put_rac(c, state+22+9, (a>>i)&1); //22..31
529  }
530  for(; i>=0; i--){
531  put_rac(c, state+22+i, (a>>i)&1); //22..31
532  }
533 
534  if(is_signed)
535  put_rac(c, state+11 + el, v < 0); //11..21
536  }else{
537  put_rac(c, state+0, 1);
538  }
539 }
540 
541 static inline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed){
542  if(get_rac(c, state+0))
543  return 0;
544  else{
545  int i, e;
546  unsigned a;
547  e= 0;
548  while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10
549  e++;
550  if (e > 31)
551  return AVERROR_INVALIDDATA;
552  }
553 
554  a= 1;
555  for(i=e-1; i>=0; i--){
556  a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31
557  }
558 
559  e= -(is_signed && get_rac(c, state+11 + FFMIN(e,10))); //11..21
560  return (a^e)-e;
561  }
562 }
563 
564 static inline void put_symbol2(RangeCoder *c, uint8_t *state, int v, int log2){
565  int i;
566  int r= log2>=0 ? 1<<log2 : 1;
567 
568  av_assert2(v>=0);
569  av_assert2(log2>=-4);
570 
571  while(v >= r){
572  put_rac(c, state+4+log2, 1);
573  v -= r;
574  log2++;
575  if(log2>0) r+=r;
576  }
577  put_rac(c, state+4+log2, 0);
578 
579  for(i=log2-1; i>=0; i--){
580  put_rac(c, state+31-i, (v>>i)&1);
581  }
582 }
583 
584 static inline int get_symbol2(RangeCoder *c, uint8_t *state, int log2){
585  int i;
586  int r= log2>=0 ? 1<<log2 : 1;
587  int v=0;
588 
589  av_assert2(log2>=-4);
590 
591  while(log2<28 && get_rac(c, state+4+log2)){
592  v+= r;
593  log2++;
594  if(log2>0) r+=r;
595  }
596 
597  for(i=log2-1; i>=0; i--){
598  v+= get_rac(c, state+31-i)<<i;
599  }
600 
601  return v;
602 }
603 
604 static inline void unpack_coeffs(SnowContext *s, SubBand *b, SubBand * parent, int orientation){
605  const int w= b->width;
606  const int h= b->height;
607  int x,y;
608 
609  int run, runs;
610  x_and_coeff *xc= b->x_coeff;
611  x_and_coeff *prev_xc= NULL;
612  x_and_coeff *prev2_xc= xc;
613  x_and_coeff *parent_xc= parent ? parent->x_coeff : NULL;
614  x_and_coeff *prev_parent_xc= parent_xc;
615 
616  runs= get_symbol2(&s->c, b->state[30], 0);
617  if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
618  else run= INT_MAX;
619 
620  for(y=0; y<h; y++){
621  int v=0;
622  int lt=0, t=0, rt=0;
623 
624  if(y && prev_xc->x == 0){
625  rt= prev_xc->coeff;
626  }
627  for(x=0; x<w; x++){
628  int p=0;
629  const int l= v;
630 
631  lt= t; t= rt;
632 
633  if(y){
634  if(prev_xc->x <= x)
635  prev_xc++;
636  if(prev_xc->x == x + 1)
637  rt= prev_xc->coeff;
638  else
639  rt=0;
640  }
641  if(parent_xc){
642  if(x>>1 > parent_xc->x){
643  parent_xc++;
644  }
645  if(x>>1 == parent_xc->x){
646  p= parent_xc->coeff;
647  }
648  }
649  if(/*ll|*/l|lt|t|rt|p){
650  int context= av_log2(/*FFABS(ll) + */3*(l>>1) + (lt>>1) + (t&~1) + (rt>>1) + (p>>1));
651 
652  v=get_rac(&s->c, &b->state[0][context]);
653  if(v){
654  v= 2*(get_symbol2(&s->c, b->state[context + 2], context-4) + 1);
655  v+=get_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l&0xFF] + 3*ff_quant3bA[t&0xFF]]);
656  if ((uint16_t)v != v) {
657  av_log(s->avctx, AV_LOG_ERROR, "Coefficient damaged\n");
658  v = 1;
659  }
660  xc->x=x;
661  (xc++)->coeff= v;
662  }
663  }else{
664  if(!run){
665  if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
666  else run= INT_MAX;
667  v= 2*(get_symbol2(&s->c, b->state[0 + 2], 0-4) + 1);
668  v+=get_rac(&s->c, &b->state[0][16 + 1 + 3]);
669  if ((uint16_t)v != v) {
670  av_log(s->avctx, AV_LOG_ERROR, "Coefficient damaged\n");
671  v = 1;
672  }
673 
674  xc->x=x;
675  (xc++)->coeff= v;
676  }else{
677  int max_run;
678  run--;
679  v=0;
680  av_assert2(run >= 0);
681  if(y) max_run= FFMIN(run, prev_xc->x - x - 2);
682  else max_run= FFMIN(run, w-x-1);
683  if(parent_xc)
684  max_run= FFMIN(max_run, 2*parent_xc->x - x - 1);
685  av_assert2(max_run >= 0 && max_run <= run);
686 
687  x+= max_run;
688  run-= max_run;
689  }
690  }
691  }
692  (xc++)->x= w+1; //end marker
693  prev_xc= prev2_xc;
694  prev2_xc= xc;
695 
696  if(parent_xc){
697  if(y&1){
698  while(parent_xc->x != parent->width+1)
699  parent_xc++;
700  parent_xc++;
701  prev_parent_xc= parent_xc;
702  }else{
703  parent_xc= prev_parent_xc;
704  }
705  }
706  }
707 
708  (xc++)->x= w+1; //end marker
709 }
710 
711 #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:456
#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:301
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
static struct @314 state
int chroma_v_shift
Definition: snow.h:153
This structure describes decoded (raw) audio or video data.
Definition: frame.h:300
unsigned avmv_size
Definition: snow.h:189
int pass1_rc
Definition: snow.h:159
static int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
Definition: snow.h:541
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:78
const char * b
Definition: vf_curves.c:116
int scenechange_threshold
Definition: snow.h:181
#define MAX_PLANES
Definition: snow.h:42
int max_ref_frames
Definition: snow.h:142
mpegvideo header.
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:219
int keyframe
Definition: snow.h:133
uint8_t run
Definition: svq3.c:209
int stride
Definition: mace.c:144
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
short IDWTELEM
Definition: dirac_dwt.h:27
uint8_t * ref[4][4]
Definition: motion_est.h:81
enum AVPictureType last_picture
Definition: movenc.c:68
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:49
#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:215
int b_height
Definition: snow.h:166
static int get_symbol2(RangeCoder *c, uint8_t *state, int log2)
Definition: snow.h:584
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:136
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:64
#define MB_SIZE
Definition: snow.h:74
Motion estimation context.
Definition: motion_est.h:47
static AVFrame * frame
quarterpel DSP functions
#define height
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:564
#define av_log(a,...)
Definition: cfhd.h:44
BlockNode * block
Definition: snow.h:171
MpegvideoEncDSPContext mpvencdsp
Definition: snow.h:123
int last_diag_mc
Definition: snow.h:111
#define src
Definition: vp8dsp.c:254
SnowDWTContext dwt
Definition: snow.h:124
void ff_snow_release_buffer(AVCodecContext *avctx)
Definition: snow.c:640
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
unsigned me_cache_generation
Definition: snow.h:174
int avmv_index
Definition: snow.h:190
int diag_mc
Definition: snow.h:106
const char * r
Definition: vf_curves.c:114
AVMotionVector * avmv
Definition: snow.h:188
const uint8_t *const ff_obmc_tab[4]
Definition: snowdata.h:123
int lambda
Definition: snow.h:157
static const uint8_t offset[127][2]
Definition: vf_spp.c:93
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
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:604
#define width
#define ME_CACHE_SIZE
Definition: snow.h:172
uint8_t w
Definition: llviddspenc.c:38
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:281
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
#define s(width, name)
Definition: cbs_vp9.c:257
int last_mv_scale
Definition: snow.h:161
int chroma_h_shift
Definition: snow.h:152
VideoDSPContext vdsp
Definition: snow.h:121
#define av_log2
Definition: intmath.h:83
static av_always_inline int same_block(BlockNode *a, BlockNode *b)
Definition: snow.h:271
int qbias
Definition: snow.h:162
#define W_BS
Definition: snow_dwt.h:79
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:331
int debug
debug
Definition: avcodec.h:1611
main external API structure.
Definition: avcodec.h:526
static av_always_inline void snow_interleave_line_footer(int *i, IDWTELEM *low, IDWTELEM *high)
Definition: snow.h:212
#define QROOT
Definition: snow.h:44
struct SubBand * parent
Definition: diracdec.c:99
void ff_snow_reset_contexts(SnowContext *s)
Definition: snow.c:96
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:193
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:488
#define mid_pred
Definition: mathops.h:97
int buf_y_offset
Definition: snow.h:92
DWTELEM * temp_dwt_buffer
Definition: snow.h:147
int motion_est
Definition: snow.h:179
int last_qlog
Definition: snow.h:156
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:314
int spatial_decomposition_type
Definition: snow.h:136
AVFrame * current_picture
Definition: snow.h:126
int memc_only
Definition: snow.h:176
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:203
#define MAX_DECOMPOSITIONS
Definition: dirac_dwt.h:30
MpegEncContext.
Definition: mpegvideo.h:81
void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, ptrdiff_t stride, int sx, int sy, int b_w, int b_h, const BlockNode *block, int plane_index, int w, int h)
Definition: snow.c:327
int temporal_decomposition_type
Definition: snow.h:138
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:510
#define put_rac(C, S, B)
DWTELEM * spatial_dwt_buffer
Definition: snow.h:146
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:61
static void pred_mv(SnowContext *s, int *mx, int *my, int ref, const BlockNode *left, const BlockNode *top, const BlockNode *tr)
Definition: snow.h:255
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:553
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:51
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:58
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:45
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:44
int height
Definition: cfhd.h:59
int last_qbias
Definition: snow.h:163
static double cr(void *priv, double x, double y)
Definition: vf_geq.c:216
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:405
int ff_snow_frame_start(SnowContext *s)
Definition: snow.c:655
int last_spatial_decomposition_type
Definition: snow.h:137
Definition: cfhd.h:57
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:229
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