Libav
rv40.c
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1 /*
2  * RV40 decoder
3  * Copyright (c) 2007 Konstantin Shishkov
4  *
5  * This file is part of Libav.
6  *
7  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
27 #include "libavutil/imgutils.h"
28 
29 #include "avcodec.h"
30 #include "mpegutils.h"
31 #include "mpegvideo.h"
32 #include "golomb.h"
33 
34 #include "rv34.h"
35 #include "rv40vlc2.h"
36 #include "rv40data.h"
37 
41 
42 static const int16_t mode2_offs[] = {
43  0, 614, 1222, 1794, 2410, 3014, 3586, 4202, 4792, 5382, 5966, 6542,
44  7138, 7716, 8292, 8864, 9444, 10030, 10642, 11212, 11814
45 };
46 
50 static av_cold void rv40_init_tables(void)
51 {
52  int i;
53  static VLC_TYPE aic_table[1 << AIC_TOP_BITS][2];
54  static VLC_TYPE aic_mode1_table[AIC_MODE1_NUM << AIC_MODE1_BITS][2];
55  static VLC_TYPE aic_mode2_table[11814][2];
56  static VLC_TYPE ptype_table[NUM_PTYPE_VLCS << PTYPE_VLC_BITS][2];
57  static VLC_TYPE btype_table[NUM_BTYPE_VLCS << BTYPE_VLC_BITS][2];
58 
59  aic_top_vlc.table = aic_table;
60  aic_top_vlc.table_allocated = 1 << AIC_TOP_BITS;
61  init_vlc(&aic_top_vlc, AIC_TOP_BITS, AIC_TOP_SIZE,
64  for(i = 0; i < AIC_MODE1_NUM; i++){
65  // Every tenth VLC table is empty
66  if((i % 10) == 9) continue;
67  aic_mode1_vlc[i].table = &aic_mode1_table[i << AIC_MODE1_BITS];
68  aic_mode1_vlc[i].table_allocated = 1 << AIC_MODE1_BITS;
69  init_vlc(&aic_mode1_vlc[i], AIC_MODE1_BITS, AIC_MODE1_SIZE,
70  aic_mode1_vlc_bits[i], 1, 1,
72  }
73  for(i = 0; i < AIC_MODE2_NUM; i++){
74  aic_mode2_vlc[i].table = &aic_mode2_table[mode2_offs[i]];
75  aic_mode2_vlc[i].table_allocated = mode2_offs[i + 1] - mode2_offs[i];
76  init_vlc(&aic_mode2_vlc[i], AIC_MODE2_BITS, AIC_MODE2_SIZE,
77  aic_mode2_vlc_bits[i], 1, 1,
79  }
80  for(i = 0; i < NUM_PTYPE_VLCS; i++){
81  ptype_vlc[i].table = &ptype_table[i << PTYPE_VLC_BITS];
82  ptype_vlc[i].table_allocated = 1 << PTYPE_VLC_BITS;
84  ptype_vlc_bits[i], 1, 1,
85  ptype_vlc_codes[i], 1, 1,
87  }
88  for(i = 0; i < NUM_BTYPE_VLCS; i++){
89  btype_vlc[i].table = &btype_table[i << BTYPE_VLC_BITS];
90  btype_vlc[i].table_allocated = 1 << BTYPE_VLC_BITS;
92  btype_vlc_bits[i], 1, 1,
93  btype_vlc_codes[i], 1, 1,
95  }
96 }
97 
104 static int get_dimension(GetBitContext *gb, const int *dim)
105 {
106  int t = get_bits(gb, 3);
107  int val = dim[t];
108  if(val < 0)
109  val = dim[get_bits1(gb) - val];
110  if(!val){
111  do{
112  t = get_bits(gb, 8);
113  val += t << 2;
114  }while(t == 0xFF);
115  }
116  return val;
117 }
118 
122 static void rv40_parse_picture_size(GetBitContext *gb, int *w, int *h)
123 {
126 }
127 
129 {
130  int mb_bits;
131  int w = r->s.width, h = r->s.height;
132  int mb_size;
133 
134  memset(si, 0, sizeof(SliceInfo));
135  if(get_bits1(gb))
136  return -1;
137  si->type = get_bits(gb, 2);
138  if(si->type == 1) si->type = 0;
139  si->quant = get_bits(gb, 5);
140  if(get_bits(gb, 2))
141  return -1;
142  si->vlc_set = get_bits(gb, 2);
143  skip_bits1(gb);
144  si->pts = get_bits(gb, 13);
145  if(!si->type || !get_bits1(gb))
146  rv40_parse_picture_size(gb, &w, &h);
147  if(av_image_check_size(w, h, 0, r->s.avctx) < 0)
148  return -1;
149  si->width = w;
150  si->height = h;
151  mb_size = ((w + 15) >> 4) * ((h + 15) >> 4);
152  mb_bits = ff_rv34_get_start_offset(gb, mb_size);
153  si->start = get_bits(gb, mb_bits);
154 
155  return 0;
156 }
157 
162 {
163  MpegEncContext *s = &r->s;
164  int i, j, k, v;
165  int A, B, C;
166  int pattern;
167  int8_t *ptr;
168 
169  for(i = 0; i < 4; i++, dst += r->intra_types_stride){
170  if(!i && s->first_slice_line){
171  pattern = get_vlc2(gb, aic_top_vlc.table, AIC_TOP_BITS, 1);
172  dst[0] = (pattern >> 2) & 2;
173  dst[1] = (pattern >> 1) & 2;
174  dst[2] = pattern & 2;
175  dst[3] = (pattern << 1) & 2;
176  continue;
177  }
178  ptr = dst;
179  for(j = 0; j < 4; j++){
180  /* Coefficients are read using VLC chosen by the prediction pattern
181  * The first one (used for retrieving a pair of coefficients) is
182  * constructed from the top, top right and left coefficients
183  * The second one (used for retrieving only one coefficient) is
184  * top + 10 * left.
185  */
186  A = ptr[-r->intra_types_stride + 1]; // it won't be used for the last coefficient in a row
187  B = ptr[-r->intra_types_stride];
188  C = ptr[-1];
189  pattern = A + (B << 4) + (C << 8);
190  for(k = 0; k < MODE2_PATTERNS_NUM; k++)
191  if(pattern == rv40_aic_table_index[k])
192  break;
193  if(j < 3 && k < MODE2_PATTERNS_NUM){ //pattern is found, decoding 2 coefficients
194  v = get_vlc2(gb, aic_mode2_vlc[k].table, AIC_MODE2_BITS, 2);
195  *ptr++ = v/9;
196  *ptr++ = v%9;
197  j++;
198  }else{
199  if(B != -1 && C != -1)
200  v = get_vlc2(gb, aic_mode1_vlc[B + C*10].table, AIC_MODE1_BITS, 1);
201  else{ // tricky decoding
202  v = 0;
203  switch(C){
204  case -1: // code 0 -> 1, 1 -> 0
205  if(B < 2)
206  v = get_bits1(gb) ^ 1;
207  break;
208  case 0:
209  case 2: // code 0 -> 2, 1 -> 0
210  v = (get_bits1(gb) ^ 1) << 1;
211  break;
212  }
213  }
214  *ptr++ = v;
215  }
216  }
217  }
218  return 0;
219 }
220 
225 {
226  MpegEncContext *s = &r->s;
227  GetBitContext *gb = &s->gb;
228  int q, i;
229  int prev_type = 0;
230  int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
231 
232  if(!r->s.mb_skip_run)
233  r->s.mb_skip_run = svq3_get_ue_golomb(gb) + 1;
234 
235  if(--r->s.mb_skip_run)
236  return RV34_MB_SKIP;
237 
238  if(r->avail_cache[6-4]){
239  int blocks[RV34_MB_TYPES] = {0};
240  int count = 0;
241  if(r->avail_cache[6-1])
242  blocks[r->mb_type[mb_pos - 1]]++;
243  blocks[r->mb_type[mb_pos - s->mb_stride]]++;
244  if(r->avail_cache[6-2])
245  blocks[r->mb_type[mb_pos - s->mb_stride + 1]]++;
246  if(r->avail_cache[6-5])
247  blocks[r->mb_type[mb_pos - s->mb_stride - 1]]++;
248  for(i = 0; i < RV34_MB_TYPES; i++){
249  if(blocks[i] > count){
250  count = blocks[i];
251  prev_type = i;
252  if(count>1)
253  break;
254  }
255  }
256  } else if (r->avail_cache[6-1])
257  prev_type = r->mb_type[mb_pos - 1];
258 
259  if(s->pict_type == AV_PICTURE_TYPE_P){
260  prev_type = block_num_to_ptype_vlc_num[prev_type];
261  q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1);
262  if(q < PBTYPE_ESCAPE)
263  return q;
264  q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1);
265  av_log(s->avctx, AV_LOG_ERROR, "Dquant for P-frame\n");
266  }else{
267  prev_type = block_num_to_btype_vlc_num[prev_type];
268  q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1);
269  if(q < PBTYPE_ESCAPE)
270  return q;
271  q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1);
272  av_log(s->avctx, AV_LOG_ERROR, "Dquant for B-frame\n");
273  }
274  return 0;
275 }
276 
282 };
283 
284 #define MASK_CUR 0x0001
285 #define MASK_RIGHT 0x0008
286 #define MASK_BOTTOM 0x0010
287 #define MASK_TOP 0x1000
288 #define MASK_Y_TOP_ROW 0x000F
289 #define MASK_Y_LAST_ROW 0xF000
290 #define MASK_Y_LEFT_COL 0x1111
291 #define MASK_Y_RIGHT_COL 0x8888
292 #define MASK_C_TOP_ROW 0x0003
293 #define MASK_C_LAST_ROW 0x000C
294 #define MASK_C_LEFT_COL 0x0005
295 #define MASK_C_RIGHT_COL 0x000A
296 
297 static const int neighbour_offs_x[4] = { 0, 0, -1, 0 };
298 static const int neighbour_offs_y[4] = { 0, -1, 0, 1 };
299 
301  uint8_t *src, int stride, int dmode,
302  int lim_q1, int lim_p1,
303  int alpha, int beta, int beta2,
304  int chroma, int edge, int dir)
305 {
306  int filter_p1, filter_q1;
307  int strong;
308  int lims;
309 
310  strong = rdsp->rv40_loop_filter_strength[dir](src, stride, beta, beta2,
311  edge, &filter_p1, &filter_q1);
312 
313  lims = filter_p1 + filter_q1 + ((lim_q1 + lim_p1) >> 1) + 1;
314 
315  if (strong) {
316  rdsp->rv40_strong_loop_filter[dir](src, stride, alpha,
317  lims, dmode, chroma);
318  } else if (filter_p1 & filter_q1) {
319  rdsp->rv40_weak_loop_filter[dir](src, stride, 1, 1, alpha, beta,
320  lims, lim_q1, lim_p1);
321  } else if (filter_p1 | filter_q1) {
322  rdsp->rv40_weak_loop_filter[dir](src, stride, filter_p1, filter_q1,
323  alpha, beta, lims >> 1, lim_q1 >> 1,
324  lim_p1 >> 1);
325  }
326 }
327 
331 static void rv40_loop_filter(RV34DecContext *r, int row)
332 {
333  MpegEncContext *s = &r->s;
334  int mb_pos, mb_x;
335  int i, j, k;
336  uint8_t *Y, *C;
337  int alpha, beta, betaY, betaC;
338  int q;
339  int mbtype[4];
340 
344  int mb_strong[4];
345  int clip[4];
346 
352  int cbp[4];
357  int uvcbp[4][2];
363  unsigned mvmasks[4];
364 
365  mb_pos = row * s->mb_stride;
366  for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
367  int mbtype = s->current_picture_ptr->mb_type[mb_pos];
368  if(IS_INTRA(mbtype) || IS_SEPARATE_DC(mbtype))
369  r->cbp_luma [mb_pos] = r->deblock_coefs[mb_pos] = 0xFFFF;
370  if(IS_INTRA(mbtype))
371  r->cbp_chroma[mb_pos] = 0xFF;
372  }
373  mb_pos = row * s->mb_stride;
374  for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
375  int y_h_deblock, y_v_deblock;
376  int c_v_deblock[2], c_h_deblock[2];
377  int clip_left;
378  int avail[4];
379  unsigned y_to_deblock;
380  int c_to_deblock[2];
381 
382  q = s->current_picture_ptr->qscale_table[mb_pos];
383  alpha = rv40_alpha_tab[q];
384  beta = rv40_beta_tab [q];
385  betaY = betaC = beta * 3;
386  if(s->width * s->height <= 176*144)
387  betaY += beta;
388 
389  avail[0] = 1;
390  avail[1] = row;
391  avail[2] = mb_x;
392  avail[3] = row < s->mb_height - 1;
393  for(i = 0; i < 4; i++){
394  if(avail[i]){
395  int pos = mb_pos + neighbour_offs_x[i] + neighbour_offs_y[i]*s->mb_stride;
396  mvmasks[i] = r->deblock_coefs[pos];
397  mbtype [i] = s->current_picture_ptr->mb_type[pos];
398  cbp [i] = r->cbp_luma[pos];
399  uvcbp[i][0] = r->cbp_chroma[pos] & 0xF;
400  uvcbp[i][1] = r->cbp_chroma[pos] >> 4;
401  }else{
402  mvmasks[i] = 0;
403  mbtype [i] = mbtype[0];
404  cbp [i] = 0;
405  uvcbp[i][0] = uvcbp[i][1] = 0;
406  }
407  mb_strong[i] = IS_INTRA(mbtype[i]) || IS_SEPARATE_DC(mbtype[i]);
408  clip[i] = rv40_filter_clip_tbl[mb_strong[i] + 1][q];
409  }
410  y_to_deblock = mvmasks[POS_CUR]
411  | (mvmasks[POS_BOTTOM] << 16);
412  /* This pattern contains bits signalling that horizontal edges of
413  * the current block can be filtered.
414  * That happens when either of adjacent subblocks is coded or lies on
415  * the edge of 8x8 blocks with motion vectors differing by more than
416  * 3/4 pel in any component (any edge orientation for some reason).
417  */
418  y_h_deblock = y_to_deblock
419  | ((cbp[POS_CUR] << 4) & ~MASK_Y_TOP_ROW)
420  | ((cbp[POS_TOP] & MASK_Y_LAST_ROW) >> 12);
421  /* This pattern contains bits signalling that vertical edges of
422  * the current block can be filtered.
423  * That happens when either of adjacent subblocks is coded or lies on
424  * the edge of 8x8 blocks with motion vectors differing by more than
425  * 3/4 pel in any component (any edge orientation for some reason).
426  */
427  y_v_deblock = y_to_deblock
428  | ((cbp[POS_CUR] << 1) & ~MASK_Y_LEFT_COL)
429  | ((cbp[POS_LEFT] & MASK_Y_RIGHT_COL) >> 3);
430  if(!mb_x)
431  y_v_deblock &= ~MASK_Y_LEFT_COL;
432  if(!row)
433  y_h_deblock &= ~MASK_Y_TOP_ROW;
434  if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM]))
435  y_h_deblock &= ~(MASK_Y_TOP_ROW << 16);
436  /* Calculating chroma patterns is similar and easier since there is
437  * no motion vector pattern for them.
438  */
439  for(i = 0; i < 2; i++){
440  c_to_deblock[i] = (uvcbp[POS_BOTTOM][i] << 4) | uvcbp[POS_CUR][i];
441  c_v_deblock[i] = c_to_deblock[i]
442  | ((uvcbp[POS_CUR] [i] << 1) & ~MASK_C_LEFT_COL)
443  | ((uvcbp[POS_LEFT][i] & MASK_C_RIGHT_COL) >> 1);
444  c_h_deblock[i] = c_to_deblock[i]
445  | ((uvcbp[POS_TOP][i] & MASK_C_LAST_ROW) >> 2)
446  | (uvcbp[POS_CUR][i] << 2);
447  if(!mb_x)
448  c_v_deblock[i] &= ~MASK_C_LEFT_COL;
449  if(!row)
450  c_h_deblock[i] &= ~MASK_C_TOP_ROW;
451  if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM]))
452  c_h_deblock[i] &= ~(MASK_C_TOP_ROW << 4);
453  }
454 
455  for(j = 0; j < 16; j += 4){
456  Y = s->current_picture_ptr->f->data[0] + mb_x*16 + (row*16 + j) * s->linesize;
457  for(i = 0; i < 4; i++, Y += 4){
458  int ij = i + j;
459  int clip_cur = y_to_deblock & (MASK_CUR << ij) ? clip[POS_CUR] : 0;
460  int dither = j ? ij : i*4;
461 
462  // if bottom block is coded then we can filter its top edge
463  // (or bottom edge of this block, which is the same)
464  if(y_h_deblock & (MASK_BOTTOM << ij)){
466  s->linesize, dither,
467  y_to_deblock & (MASK_BOTTOM << ij) ? clip[POS_CUR] : 0,
468  clip_cur, alpha, beta, betaY,
469  0, 0, 0);
470  }
471  // filter left block edge in ordinary mode (with low filtering strength)
472  if(y_v_deblock & (MASK_CUR << ij) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){
473  if(!i)
474  clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
475  else
476  clip_left = y_to_deblock & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;
477  rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
478  clip_cur,
479  clip_left,
480  alpha, beta, betaY, 0, 0, 1);
481  }
482  // filter top edge of the current macroblock when filtering strength is high
483  if(!j && y_h_deblock & (MASK_CUR << i) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){
484  rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
485  clip_cur,
486  mvmasks[POS_TOP] & (MASK_TOP << i) ? clip[POS_TOP] : 0,
487  alpha, beta, betaY, 0, 1, 0);
488  }
489  // filter left block edge in edge mode (with high filtering strength)
490  if(y_v_deblock & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){
491  clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
492  rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
493  clip_cur,
494  clip_left,
495  alpha, beta, betaY, 0, 1, 1);
496  }
497  }
498  }
499  for(k = 0; k < 2; k++){
500  for(j = 0; j < 2; j++){
501  C = s->current_picture_ptr->f->data[k + 1] + mb_x*8 + (row*8 + j*4) * s->uvlinesize;
502  for(i = 0; i < 2; i++, C += 4){
503  int ij = i + j*2;
504  int clip_cur = c_to_deblock[k] & (MASK_CUR << ij) ? clip[POS_CUR] : 0;
505  if(c_h_deblock[k] & (MASK_CUR << (ij+2))){
506  int clip_bot = c_to_deblock[k] & (MASK_CUR << (ij+2)) ? clip[POS_CUR] : 0;
508  clip_bot,
509  clip_cur,
510  alpha, beta, betaC, 1, 0, 0);
511  }
512  if((c_v_deblock[k] & (MASK_CUR << ij)) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){
513  if(!i)
514  clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;
515  else
516  clip_left = c_to_deblock[k] & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;
517  rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8,
518  clip_cur,
519  clip_left,
520  alpha, beta, betaC, 1, 0, 1);
521  }
522  if(!j && c_h_deblock[k] & (MASK_CUR << ij) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){
523  int clip_top = uvcbp[POS_TOP][k] & (MASK_CUR << (ij+2)) ? clip[POS_TOP] : 0;
524  rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, i*8,
525  clip_cur,
526  clip_top,
527  alpha, beta, betaC, 1, 1, 0);
528  }
529  if(c_v_deblock[k] & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){
530  clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;
531  rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8,
532  clip_cur,
533  clip_left,
534  alpha, beta, betaC, 1, 1, 1);
535  }
536  }
537  }
538  }
539  }
540 }
541 
546 {
547  RV34DecContext *r = avctx->priv_data;
548  int ret;
549 
550  r->rv30 = 0;
551  if ((ret = ff_rv34_decode_init(avctx)) < 0)
552  return ret;
553  if(!aic_top_vlc.bits)
561  return 0;
562 }
563 
565  .name = "rv40",
566  .long_name = NULL_IF_CONFIG_SMALL("RealVideo 4.0"),
567  .type = AVMEDIA_TYPE_VIDEO,
568  .id = AV_CODEC_ID_RV40,
569  .priv_data_size = sizeof(RV34DecContext),
573  .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY |
575  .flush = ff_mpeg_flush,
576  .pix_fmts = (const enum AVPixelFormat[]) {
579  },
582 };
int vlc_set
VLCs used for this slice.
Definition: rv34.h:76
static const uint8_t btype_vlc_codes[NUM_BTYPE_VLCS][BTYPE_VLC_SIZE]
Definition: rv40vlc2.h:679
#define PBTYPE_ESCAPE
Definition: rv40vlc2.h:635
static av_cold void rv40_init_tables(void)
Initialize all tables.
Definition: rv40.c:50
AVCodec ff_rv40_decoder
Definition: rv40.c:564
int(* decode_intra_types)(struct RV34DecContext *r, GetBitContext *gb, int8_t *dst)
Definition: rv34.h:126
Definition: vf_drawbox.c:37
void(* loop_filter)(struct RV34DecContext *r, int row)
Definition: rv34.h:127
#define PTYPE_VLC_BITS
Definition: rv40vlc2.h:641
uint32_t avail_cache[3 *4]
8x8 block available flags (for MV prediction)
Definition: rv34.h:117
#define MASK_CUR
Definition: rv40.c:284
#define IS_SEPARATE_DC(a)
Definition: rv34.h:37
misc image utilities
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:240
rv40_loop_filter_strength_func rv40_loop_filter_strength[2]
Definition: rv34dsp.h:74
MpegEncContext s
Definition: rv34.h:85
#define PTYPE_VLC_SIZE
Definition: rv40vlc2.h:640
int height
coded height
Definition: rv34.h:79
static unsigned svq3_get_ue_golomb(GetBitContext *gb)
Definition: golomb.h:111
#define BTYPE_VLC_SIZE
Definition: rv40vlc2.h:676
#define AIC_MODE1_SIZE
Definition: rv40vlc2.h:428
#define BTYPE_VLC_BITS
Definition: rv40vlc2.h:677
#define VLC_TYPE
Definition: get_bits.h:62
mpegvideo header.
#define MODE2_PATTERNS_NUM
Definition: rv40data.h:40
static void rv40_parse_picture_size(GetBitContext *gb, int *w, int *h)
Get encoded picture size - usually this is called from rv40_parse_slice_header.
Definition: rv40.c:122
RV30 and RV40 decoder common data declarations.
int start
Definition: rv34.h:77
int stride
Definition: mace.c:144
AVCodec.
Definition: avcodec.h:2812
const uint8_t * luma_dc_quant_p
luma subblock DC quantizer for interframes
Definition: rv34.h:91
static const uint8_t rv40_beta_tab[32]
beta parameter for RV40 loop filter - almost the same as in JVT-A003r1
Definition: rv40data.h:80
static const uint8_t btype_vlc_syms[BTYPE_VLC_SIZE]
Definition: rv40vlc2.h:697
static const int neighbour_offs_x[4]
Definition: rv40.c:297
static VLC btype_vlc[NUM_BTYPE_VLCS]
Definition: rv40.c:40
static const uint8_t block_num_to_ptype_vlc_num[12]
reverse of ptype_vlc_syms
Definition: rv40vlc2.h:668
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
Definition: mimic.c:275
int ff_init_vlc_sparse(VLC *vlc, int nb_bits, int nb_codes, const void *bits, int bits_wrap, int bits_size, const void *codes, int codes_wrap, int codes_size, const void *symbols, int symbols_wrap, int symbols_size, int flags)
Definition: bitstream.c:266
uint8_t
#define av_cold
Definition: attributes.h:66
uint16_t * cbp_luma
CBP values for luma subblocks.
Definition: rv34.h:112
static const uint8_t aic_mode1_vlc_bits[AIC_MODE1_NUM][AIC_MODE1_SIZE]
Definition: rv40vlc2.h:532
int width
coded width
Definition: rv34.h:78
#define MASK_C_RIGHT_COL
Definition: rv40.c:295
rv40_weak_loop_filter_func rv40_weak_loop_filter[2]
Definition: rv34dsp.h:72
uint16_t * deblock_coefs
deblock coefficients for each macroblock
Definition: rv34.h:114
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:684
static const int rv40_standard_heights[]
Definition: rv40data.h:37
static const uint8_t rv40_luma_dc_quant[2][32]
luma quantizer values The second table is used for inter blocks.
Definition: rv40data.h:60
static void rv40_adaptive_loop_filter(RV34DSPContext *rdsp, uint8_t *src, int stride, int dmode, int lim_q1, int lim_p1, int alpha, int beta, int beta2, int chroma, int edge, int dir)
Definition: rv40.c:300
Skipped block.
Definition: rv34.h:49
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:255
#define B
Definition: huffyuv.h:49
#define MASK_Y_LAST_ROW
Definition: rv40.c:289
#define r
Definition: input.c:51
static VLC aic_mode2_vlc[AIC_MODE2_NUM]
Definition: rv40.c:39
int quant
quantizer used for this slice
Definition: rv34.h:75
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:123
int(* parse_slice_header)(struct RV34DecContext *r, GetBitContext *gb, SliceInfo *si)
Definition: rv34.h:124
static const uint8_t block_num_to_btype_vlc_num[12]
reverse of btype_vlc_syms
Definition: rv40vlc2.h:702
#define CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: avcodec.h:713
static const uint8_t rv40_filter_clip_tbl[3][32]
clip table for RV40 loop filter - the same as in JVT-A003r1
Definition: rv40data.h:85
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:145
static int rv40_decode_mb_info(RV34DecContext *r)
Decode macroblock information.
Definition: rv40.c:224
void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:169
#define MASK_Y_TOP_ROW
Definition: rv40.c:288
const char * name
Name of the codec implementation.
Definition: avcodec.h:2819
GetBitContext gb
Definition: mpegvideo.h:558
static const uint8_t ptype_vlc_syms[PTYPE_VLC_SIZE]
Definition: rv40vlc2.h:663
#define MASK_BOTTOM
Definition: rv40.c:286
Definition: get_bits.h:64
void ff_mpeg_flush(AVCodecContext *avctx)
Definition: mpegvideo.c:2503
#define ONLY_IF_THREADS_ENABLED(x)
Define a function with only the non-default version specified.
Definition: internal.h:185
static const uint8_t ptype_vlc_bits[NUM_PTYPE_VLCS][PTYPE_VLC_SIZE]
Definition: rv40vlc2.h:653
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
Definition: imgutils.c:222
#define MASK_RIGHT
Definition: rv40.c:285
static VLC ptype_vlc[NUM_PTYPE_VLCS]
Definition: rv40.c:40
int * mb_type
internal macroblock types
Definition: rv34.h:97
#define MASK_C_LEFT_COL
Definition: rv40.c:294
static int rv40_parse_slice_header(RV34DecContext *r, GetBitContext *gb, SliceInfo *si)
Definition: rv40.c:128
#define AIC_MODE2_NUM
codes used for determining a pair of block types
Definition: rv40vlc2.h:52
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:310
static av_cold int rv40_decode_init(AVCodecContext *avctx)
Initialize decoder.
Definition: rv40.c:545
static const uint16_t rv40_aic_table_index[MODE2_PATTERNS_NUM]
intra types table
Definition: rv40data.h:47
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
Definition: get_bits.h:522
static const uint8_t rv40_aic_top_vlc_bits[AIC_TOP_SIZE]
Definition: rv40vlc2.h:43
#define AIC_MODE1_BITS
Definition: rv40vlc2.h:429
static VLC aic_mode1_vlc[AIC_MODE1_NUM]
Definition: rv40.c:39
#define INIT_VLC_USE_NEW_STATIC
Definition: get_bits.h:441
Definition: rv40.c:279
#define MASK_Y_LEFT_COL
Definition: rv40.c:290
#define MASK_TOP
Definition: rv40.c:287
int bits
Definition: get_bits.h:65
static const uint8_t ptype_vlc_codes[NUM_PTYPE_VLCS][PTYPE_VLC_SIZE]
Definition: rv40vlc2.h:643
int table_allocated
Definition: get_bits.h:67
int first_slice_line
used in mpeg4 too to handle resync markers
Definition: mpegvideo.h:546
int ff_rv34_decode_init_thread_copy(AVCodecContext *avctx)
Definition: rv34.c:1519
static const uint16_t dither[8][8]
Definition: vf_gradfun.c:46
essential slice information
Definition: rv34.h:73
Libavcodec external API header.
ptrdiff_t linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:260
#define MASK_C_TOP_ROW
Definition: rv40.c:292
main external API structure.
Definition: avcodec.h:1050
static void close(AVCodecParserContext *s)
Definition: h264_parser.c:490
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:223
#define init_vlc(vlc, nb_bits, nb_codes,bits, bits_wrap, bits_size,codes, codes_wrap, codes_size,flags)
Definition: get_bits.h:424
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:271
static void skip_bits1(GetBitContext *s)
Definition: get_bits.h:296
static const uint16_t aic_mode2_vlc_codes[AIC_MODE2_NUM][AIC_MODE2_SIZE]
Definition: rv40vlc2.h:56
struct AVFrame * f
Definition: mpegvideo.h:100
#define MASK_C_LAST_ROW
Definition: rv40.c:293
static const int16_t mode2_offs[]
Definition: rv40.c:42
av_cold int ff_rv34_decode_init(AVCodecContext *avctx)
Initialize decoder.
Definition: rv34.c:1472
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
Definition: mpegvideo.h:261
int dim
int ff_rv34_decode_frame(AVCodecContext *avctx, void *data, int *got_picture_ptr, AVPacket *avpkt)
Definition: rv34.c:1611
int intra_types_stride
block types array stride
Definition: rv34.h:89
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:339
Definition: vf_drawbox.c:37
static const int rv40_standard_widths[]
standard widths and heights coded in RV40
Definition: rv40data.h:36
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:141
static VLC aic_top_vlc
Definition: rv40.c:38
MpegEncContext.
Definition: mpegvideo.h:204
#define AIC_TOP_SIZE
Definition: rv40vlc2.h:37
av_cold int ff_rv34_decode_end(AVCodecContext *avctx)
Definition: rv34.c:1812
int8_t * qscale_table
Definition: mpegvideo.h:104
struct AVCodecContext * avctx
Definition: mpegvideo.h:221
int(* decode_mb_info)(struct RV34DecContext *r)
Definition: rv34.h:125
static const uint8_t aic_mode1_vlc_codes[AIC_MODE1_NUM][AIC_MODE1_SIZE]
Definition: rv40vlc2.h:431
#define MASK_Y_RIGHT_COL
Definition: rv40.c:291
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:65
static int get_dimension(GetBitContext *gb, const int *dim)
Get stored dimension from bitstream.
Definition: rv40.c:104
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
Definition: mpegvideo.h:256
#define CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:755
static double clip(void *opaque, double val)
Clip value val in the minval - maxval range.
Definition: vf_lut.c:162
static av_cold void flush(AVCodecContext *avctx)
Flush (reset) the frame ID after seeking.
Definition: alsdec.c:1797
Definition: rv40.c:278
rv40_strong_loop_filter_func rv40_strong_loop_filter[2]
Definition: rv34dsp.h:73
int ff_rv34_decode_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: rv34.c:1547
#define AIC_TOP_BITS
codes used for the first four block types
Definition: rv40vlc2.h:36
#define AIC_MODE2_SIZE
Definition: rv40vlc2.h:53
Definition: rv40.c:280
int ff_rv34_get_start_offset(GetBitContext *gb, int mb_size)
Decode starting slice position.
Definition: rv34.c:329
static av_cold int init(AVCodecParserContext *s)
Definition: h264_parser.c:499
#define IS_INTRA(x, y)
decoder context
Definition: rv34.h:84
void * priv_data
Definition: avcodec.h:1092
#define NUM_BTYPE_VLCS
tables used for P-frame macroblock type decoding
Definition: rv40vlc2.h:675
RV40BlockPos
Definition: rv40.c:277
RV40 VLC tables used for macroblock information decoding.
static const uint8_t btype_vlc_bits[NUM_BTYPE_VLCS][PTYPE_VLC_SIZE]
Definition: rv40vlc2.h:688
VLC_TYPE(* table)[2]
code, bits
Definition: get_bits.h:66
static const uint8_t rv40_alpha_tab[32]
alpha parameter for RV40 loop filter - almost the same as in JVT-A003r1
Definition: rv40data.h:73
#define AIC_MODE1_NUM
Codes used for determining block type.
Definition: rv40vlc2.h:427
const uint8_t * luma_dc_quant_i
luma subblock DC quantizer for intraframes
Definition: rv34.h:90
static int rv40_decode_intra_types(RV34DecContext *r, GetBitContext *gb, int8_t *dst)
Decode 4x4 intra types array.
Definition: rv40.c:161
#define NUM_PTYPE_VLCS
tables used for P-frame macroblock type decoding
Definition: rv40vlc2.h:639
uint32_t * mb_type
types and macros are defined in mpegutils.h
Definition: mpegvideo.h:110
int type
slice type (intra, inter)
Definition: rv34.h:74
#define AIC_MODE2_BITS
Definition: rv40vlc2.h:54
miscellaneous RV40 tables
static const int neighbour_offs_y[4]
Definition: rv40.c:298
int rv30
indicates which RV variasnt is currently decoded
Definition: rv34.h:104
static const uint8_t rv40_aic_top_vlc_codes[AIC_TOP_SIZE]
Definition: rv40vlc2.h:38
exp golomb vlc stuff
AVPixelFormat
Pixel format.
Definition: pixfmt.h:63
RV34DSPContext rdsp
Definition: rv34.h:86
static void rv40_loop_filter(RV34DecContext *r, int row)
RV40 loop filtering function.
Definition: rv40.c:331
static const uint8_t aic_mode2_vlc_bits[AIC_MODE2_NUM][AIC_MODE2_SIZE]
Definition: rv40vlc2.h:239
Predicted.
Definition: avutil.h:254
int pts
frame timestamp
Definition: rv34.h:80
uint8_t * cbp_chroma
CBP values for chroma subblocks.
Definition: rv34.h:113