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rv40.c
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1 /*
2  * RV40 decoder
3  * Copyright (c) 2007 Konstantin Shishkov
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 /**
23  * @file
24  * RV40 decoder
25  */
26 
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 
47 /**
48  * Initialize all tables.
49  */
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 
98 /**
99  * Get stored dimension from bitstream.
100  *
101  * If the width/height is the standard one then it's coded as a 3-bit index.
102  * Otherwise it is coded as escaped 8-bit portions.
103  */
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  if (get_bits_left(gb) < 8)
113  return AVERROR_INVALIDDATA;
114  t = get_bits(gb, 8);
115  val += t << 2;
116  }while(t == 0xFF);
117  }
118  return val;
119 }
120 
121 /**
122  * Get encoded picture size - usually this is called from rv40_parse_slice_header.
123  */
124 static void rv40_parse_picture_size(GetBitContext *gb, int *w, int *h)
125 {
128 }
129 
131 {
132  int mb_bits;
133  int w = r->s.width, h = r->s.height;
134  int mb_size;
135  int ret;
136 
137  memset(si, 0, sizeof(SliceInfo));
138  if(get_bits1(gb))
139  return AVERROR_INVALIDDATA;
140  si->type = get_bits(gb, 2);
141  if(si->type == 1) si->type = 0;
142  si->quant = get_bits(gb, 5);
143  if(get_bits(gb, 2))
144  return AVERROR_INVALIDDATA;
145  si->vlc_set = get_bits(gb, 2);
146  skip_bits1(gb);
147  si->pts = get_bits(gb, 13);
148  if(!si->type || !get_bits1(gb))
149  rv40_parse_picture_size(gb, &w, &h);
150  if ((ret = av_image_check_size(w, h, 0, r->s.avctx)) < 0)
151  return ret;
152  si->width = w;
153  si->height = h;
154  mb_size = ((w + 15) >> 4) * ((h + 15) >> 4);
155  mb_bits = ff_rv34_get_start_offset(gb, mb_size);
156  si->start = get_bits(gb, mb_bits);
157 
158  return 0;
159 }
160 
161 /**
162  * Decode 4x4 intra types array.
163  */
165 {
166  MpegEncContext *s = &r->s;
167  int i, j, k, v;
168  int A, B, C;
169  int pattern;
170  int8_t *ptr;
171 
172  for(i = 0; i < 4; i++, dst += r->intra_types_stride){
173  if(!i && s->first_slice_line){
174  pattern = get_vlc2(gb, aic_top_vlc.table, AIC_TOP_BITS, 1);
175  dst[0] = (pattern >> 2) & 2;
176  dst[1] = (pattern >> 1) & 2;
177  dst[2] = pattern & 2;
178  dst[3] = (pattern << 1) & 2;
179  continue;
180  }
181  ptr = dst;
182  for(j = 0; j < 4; j++){
183  /* Coefficients are read using VLC chosen by the prediction pattern
184  * The first one (used for retrieving a pair of coefficients) is
185  * constructed from the top, top right and left coefficients
186  * The second one (used for retrieving only one coefficient) is
187  * top + 10 * left.
188  */
189  A = ptr[-r->intra_types_stride + 1]; // it won't be used for the last coefficient in a row
190  B = ptr[-r->intra_types_stride];
191  C = ptr[-1];
192  pattern = A + (B << 4) + (C << 8);
193  for(k = 0; k < MODE2_PATTERNS_NUM; k++)
194  if(pattern == rv40_aic_table_index[k])
195  break;
196  if(j < 3 && k < MODE2_PATTERNS_NUM){ //pattern is found, decoding 2 coefficients
197  v = get_vlc2(gb, aic_mode2_vlc[k].table, AIC_MODE2_BITS, 2);
198  *ptr++ = v/9;
199  *ptr++ = v%9;
200  j++;
201  }else{
202  if(B != -1 && C != -1)
203  v = get_vlc2(gb, aic_mode1_vlc[B + C*10].table, AIC_MODE1_BITS, 1);
204  else{ // tricky decoding
205  v = 0;
206  switch(C){
207  case -1: // code 0 -> 1, 1 -> 0
208  if(B < 2)
209  v = get_bits1(gb) ^ 1;
210  break;
211  case 0:
212  case 2: // code 0 -> 2, 1 -> 0
213  v = (get_bits1(gb) ^ 1) << 1;
214  break;
215  }
216  }
217  *ptr++ = v;
218  }
219  }
220  }
221  return 0;
222 }
223 
224 /**
225  * Decode macroblock information.
226  */
228 {
229  MpegEncContext *s = &r->s;
230  GetBitContext *gb = &s->gb;
231  int q, i;
232  int prev_type = 0;
233  int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
234 
235  if(!r->s.mb_skip_run) {
237  if(r->s.mb_skip_run > (unsigned)s->mb_num)
238  return -1;
239  }
240 
241  if(--r->s.mb_skip_run)
242  return RV34_MB_SKIP;
243 
244  if(r->avail_cache[6-4]){
245  int blocks[RV34_MB_TYPES] = {0};
246  int count = 0;
247  if(r->avail_cache[6-1])
248  blocks[r->mb_type[mb_pos - 1]]++;
249  blocks[r->mb_type[mb_pos - s->mb_stride]]++;
250  if(r->avail_cache[6-2])
251  blocks[r->mb_type[mb_pos - s->mb_stride + 1]]++;
252  if(r->avail_cache[6-5])
253  blocks[r->mb_type[mb_pos - s->mb_stride - 1]]++;
254  for(i = 0; i < RV34_MB_TYPES; i++){
255  if(blocks[i] > count){
256  count = blocks[i];
257  prev_type = i;
258  if(count>1)
259  break;
260  }
261  }
262  } else if (r->avail_cache[6-1])
263  prev_type = r->mb_type[mb_pos - 1];
264 
265  if(s->pict_type == AV_PICTURE_TYPE_P){
266  prev_type = block_num_to_ptype_vlc_num[prev_type];
267  q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1);
268  if(q < PBTYPE_ESCAPE)
269  return q;
270  q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1);
271  av_log(s->avctx, AV_LOG_ERROR, "Dquant for P-frame\n");
272  }else{
273  prev_type = block_num_to_btype_vlc_num[prev_type];
274  q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1);
275  if(q < PBTYPE_ESCAPE)
276  return q;
277  q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1);
278  av_log(s->avctx, AV_LOG_ERROR, "Dquant for B-frame\n");
279  }
280  return 0;
281 }
282 
288 };
289 
290 #define MASK_CUR 0x0001
291 #define MASK_RIGHT 0x0008
292 #define MASK_BOTTOM 0x0010
293 #define MASK_TOP 0x1000
294 #define MASK_Y_TOP_ROW 0x000F
295 #define MASK_Y_LAST_ROW 0xF000
296 #define MASK_Y_LEFT_COL 0x1111
297 #define MASK_Y_RIGHT_COL 0x8888
298 #define MASK_C_TOP_ROW 0x0003
299 #define MASK_C_LAST_ROW 0x000C
300 #define MASK_C_LEFT_COL 0x0005
301 #define MASK_C_RIGHT_COL 0x000A
302 
303 static const int neighbour_offs_x[4] = { 0, 0, -1, 0 };
304 static const int neighbour_offs_y[4] = { 0, -1, 0, 1 };
305 
307  uint8_t *src, int stride, int dmode,
308  int lim_q1, int lim_p1,
309  int alpha, int beta, int beta2,
310  int chroma, int edge, int dir)
311 {
312  int filter_p1, filter_q1;
313  int strong;
314  int lims;
315 
316  strong = rdsp->rv40_loop_filter_strength[dir](src, stride, beta, beta2,
317  edge, &filter_p1, &filter_q1);
318 
319  lims = filter_p1 + filter_q1 + ((lim_q1 + lim_p1) >> 1) + 1;
320 
321  if (strong) {
323  lims, dmode, chroma);
324  } else if (filter_p1 & filter_q1) {
325  rdsp->rv40_weak_loop_filter[dir](src, stride, 1, 1, alpha, beta,
326  lims, lim_q1, lim_p1);
327  } else if (filter_p1 | filter_q1) {
328  rdsp->rv40_weak_loop_filter[dir](src, stride, filter_p1, filter_q1,
329  alpha, beta, lims >> 1, lim_q1 >> 1,
330  lim_p1 >> 1);
331  }
332 }
333 
334 /**
335  * RV40 loop filtering function
336  */
337 static void rv40_loop_filter(RV34DecContext *r, int row)
338 {
339  MpegEncContext *s = &r->s;
340  int mb_pos, mb_x;
341  int i, j, k;
342  uint8_t *Y, *C;
343  int alpha, beta, betaY, betaC;
344  int q;
345  int mbtype[4]; ///< current macroblock and its neighbours types
346  /**
347  * flags indicating that macroblock can be filtered with strong filter
348  * it is set only for intra coded MB and MB with DCs coded separately
349  */
350  int mb_strong[4];
351  int clip[4]; ///< MB filter clipping value calculated from filtering strength
352  /**
353  * coded block patterns for luma part of current macroblock and its neighbours
354  * Format:
355  * LSB corresponds to the top left block,
356  * each nibble represents one row of subblocks.
357  */
358  int cbp[4];
359  /**
360  * coded block patterns for chroma part of current macroblock and its neighbours
361  * Format is the same as for luma with two subblocks in a row.
362  */
363  int uvcbp[4][2];
364  /**
365  * This mask represents the pattern of luma subblocks that should be filtered
366  * in addition to the coded ones because they lie at the edge of
367  * 8x8 block with different enough motion vectors
368  */
369  unsigned mvmasks[4];
370 
371  mb_pos = row * s->mb_stride;
372  for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
373  int mbtype = s->current_picture_ptr->mb_type[mb_pos];
374  if(IS_INTRA(mbtype) || IS_SEPARATE_DC(mbtype))
375  r->cbp_luma [mb_pos] = r->deblock_coefs[mb_pos] = 0xFFFF;
376  if(IS_INTRA(mbtype))
377  r->cbp_chroma[mb_pos] = 0xFF;
378  }
379  mb_pos = row * s->mb_stride;
380  for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
381  int y_h_deblock, y_v_deblock;
382  int c_v_deblock[2], c_h_deblock[2];
383  int clip_left;
384  int avail[4];
385  unsigned y_to_deblock;
386  int c_to_deblock[2];
387 
388  q = s->current_picture_ptr->qscale_table[mb_pos];
389  alpha = rv40_alpha_tab[q];
390  beta = rv40_beta_tab [q];
391  betaY = betaC = beta * 3;
392  if(s->width * s->height <= 176*144)
393  betaY += beta;
394 
395  avail[0] = 1;
396  avail[1] = row;
397  avail[2] = mb_x;
398  avail[3] = row < s->mb_height - 1;
399  for(i = 0; i < 4; i++){
400  if(avail[i]){
401  int pos = mb_pos + neighbour_offs_x[i] + neighbour_offs_y[i]*s->mb_stride;
402  mvmasks[i] = r->deblock_coefs[pos];
403  mbtype [i] = s->current_picture_ptr->mb_type[pos];
404  cbp [i] = r->cbp_luma[pos];
405  uvcbp[i][0] = r->cbp_chroma[pos] & 0xF;
406  uvcbp[i][1] = r->cbp_chroma[pos] >> 4;
407  }else{
408  mvmasks[i] = 0;
409  mbtype [i] = mbtype[0];
410  cbp [i] = 0;
411  uvcbp[i][0] = uvcbp[i][1] = 0;
412  }
413  mb_strong[i] = IS_INTRA(mbtype[i]) || IS_SEPARATE_DC(mbtype[i]);
414  clip[i] = rv40_filter_clip_tbl[mb_strong[i] + 1][q];
415  }
416  y_to_deblock = mvmasks[POS_CUR]
417  | (mvmasks[POS_BOTTOM] << 16);
418  /* This pattern contains bits signalling that horizontal edges of
419  * the current block can be filtered.
420  * That happens when either of adjacent subblocks is coded or lies on
421  * the edge of 8x8 blocks with motion vectors differing by more than
422  * 3/4 pel in any component (any edge orientation for some reason).
423  */
424  y_h_deblock = y_to_deblock
425  | ((cbp[POS_CUR] << 4) & ~MASK_Y_TOP_ROW)
426  | ((cbp[POS_TOP] & MASK_Y_LAST_ROW) >> 12);
427  /* This pattern contains bits signalling that vertical edges of
428  * the current block can be filtered.
429  * That happens when either of adjacent subblocks is coded or lies on
430  * the edge of 8x8 blocks with motion vectors differing by more than
431  * 3/4 pel in any component (any edge orientation for some reason).
432  */
433  y_v_deblock = y_to_deblock
434  | ((cbp[POS_CUR] << 1) & ~MASK_Y_LEFT_COL)
435  | ((cbp[POS_LEFT] & MASK_Y_RIGHT_COL) >> 3);
436  if(!mb_x)
437  y_v_deblock &= ~MASK_Y_LEFT_COL;
438  if(!row)
439  y_h_deblock &= ~MASK_Y_TOP_ROW;
440  if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM]))
441  y_h_deblock &= ~(MASK_Y_TOP_ROW << 16);
442  /* Calculating chroma patterns is similar and easier since there is
443  * no motion vector pattern for them.
444  */
445  for(i = 0; i < 2; i++){
446  c_to_deblock[i] = (uvcbp[POS_BOTTOM][i] << 4) | uvcbp[POS_CUR][i];
447  c_v_deblock[i] = c_to_deblock[i]
448  | ((uvcbp[POS_CUR] [i] << 1) & ~MASK_C_LEFT_COL)
449  | ((uvcbp[POS_LEFT][i] & MASK_C_RIGHT_COL) >> 1);
450  c_h_deblock[i] = c_to_deblock[i]
451  | ((uvcbp[POS_TOP][i] & MASK_C_LAST_ROW) >> 2)
452  | (uvcbp[POS_CUR][i] << 2);
453  if(!mb_x)
454  c_v_deblock[i] &= ~MASK_C_LEFT_COL;
455  if(!row)
456  c_h_deblock[i] &= ~MASK_C_TOP_ROW;
457  if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM]))
458  c_h_deblock[i] &= ~(MASK_C_TOP_ROW << 4);
459  }
460 
461  for(j = 0; j < 16; j += 4){
462  Y = s->current_picture_ptr->f->data[0] + mb_x*16 + (row*16 + j) * s->linesize;
463  for(i = 0; i < 4; i++, Y += 4){
464  int ij = i + j;
465  int clip_cur = y_to_deblock & (MASK_CUR << ij) ? clip[POS_CUR] : 0;
466  int dither = j ? ij : i*4;
467 
468  // if bottom block is coded then we can filter its top edge
469  // (or bottom edge of this block, which is the same)
470  if(y_h_deblock & (MASK_BOTTOM << ij)){
472  s->linesize, dither,
473  y_to_deblock & (MASK_BOTTOM << ij) ? clip[POS_CUR] : 0,
474  clip_cur, alpha, beta, betaY,
475  0, 0, 0);
476  }
477  // filter left block edge in ordinary mode (with low filtering strength)
478  if(y_v_deblock & (MASK_CUR << ij) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){
479  if(!i)
480  clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
481  else
482  clip_left = y_to_deblock & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;
483  rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
484  clip_cur,
485  clip_left,
486  alpha, beta, betaY, 0, 0, 1);
487  }
488  // filter top edge of the current macroblock when filtering strength is high
489  if(!j && y_h_deblock & (MASK_CUR << i) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){
490  rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
491  clip_cur,
492  mvmasks[POS_TOP] & (MASK_TOP << i) ? clip[POS_TOP] : 0,
493  alpha, beta, betaY, 0, 1, 0);
494  }
495  // filter left block edge in edge mode (with high filtering strength)
496  if(y_v_deblock & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){
497  clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
498  rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
499  clip_cur,
500  clip_left,
501  alpha, beta, betaY, 0, 1, 1);
502  }
503  }
504  }
505  for(k = 0; k < 2; k++){
506  for(j = 0; j < 2; j++){
507  C = s->current_picture_ptr->f->data[k + 1] + mb_x*8 + (row*8 + j*4) * s->uvlinesize;
508  for(i = 0; i < 2; i++, C += 4){
509  int ij = i + j*2;
510  int clip_cur = c_to_deblock[k] & (MASK_CUR << ij) ? clip[POS_CUR] : 0;
511  if(c_h_deblock[k] & (MASK_CUR << (ij+2))){
512  int clip_bot = c_to_deblock[k] & (MASK_CUR << (ij+2)) ? clip[POS_CUR] : 0;
514  clip_bot,
515  clip_cur,
516  alpha, beta, betaC, 1, 0, 0);
517  }
518  if((c_v_deblock[k] & (MASK_CUR << ij)) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){
519  if(!i)
520  clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;
521  else
522  clip_left = c_to_deblock[k] & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;
523  rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8,
524  clip_cur,
525  clip_left,
526  alpha, beta, betaC, 1, 0, 1);
527  }
528  if(!j && c_h_deblock[k] & (MASK_CUR << ij) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){
529  int clip_top = uvcbp[POS_TOP][k] & (MASK_CUR << (ij+2)) ? clip[POS_TOP] : 0;
530  rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, i*8,
531  clip_cur,
532  clip_top,
533  alpha, beta, betaC, 1, 1, 0);
534  }
535  if(c_v_deblock[k] & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){
536  clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;
537  rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8,
538  clip_cur,
539  clip_left,
540  alpha, beta, betaC, 1, 1, 1);
541  }
542  }
543  }
544  }
545  }
546 }
547 
548 /**
549  * Initialize decoder.
550  */
552 {
553  RV34DecContext *r = avctx->priv_data;
554  int ret;
555 
556  r->rv30 = 0;
557  if ((ret = ff_rv34_decode_init(avctx)) < 0)
558  return ret;
559  if(!aic_top_vlc.bits)
567  return 0;
568 }
569 
571  .name = "rv40",
572  .long_name = NULL_IF_CONFIG_SMALL("RealVideo 4.0"),
573  .type = AVMEDIA_TYPE_VIDEO,
574  .id = AV_CODEC_ID_RV40,
575  .priv_data_size = sizeof(RV34DecContext),
577  .close = ff_rv34_decode_end,
579  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
581  .flush = ff_mpeg_flush,
582  .pix_fmts = (const enum AVPixelFormat[]) {
585  },
588 };
int vlc_set
VLCs used for this slice.
Definition: rv34.h:76
const char const char void * val
Definition: avisynth_c.h:771
static const uint8_t btype_vlc_codes[NUM_BTYPE_VLCS][BTYPE_VLC_SIZE]
Definition: rv40vlc2.h:679
const char * s
Definition: avisynth_c.h:768
#define PBTYPE_ESCAPE
Definition: rv40vlc2.h:635
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static av_cold void rv40_init_tables(void)
Initialize all tables.
Definition: rv40.c:50
AVCodec ff_rv40_decoder
Definition: rv40.c:570
static av_always_inline void chroma(WaveformContext *s, AVFrame *in, AVFrame *out, int component, int intensity, int offset_y, int offset_x, int column, int mirror)
Definition: vf_waveform.c:1337
int(* decode_intra_types)(struct RV34DecContext *r, GetBitContext *gb, int8_t *dst)
Definition: rv34.h:128
static void flush(AVCodecContext *avctx)
void(* loop_filter)(struct RV34DecContext *r, int row)
Definition: rv34.h:129
#define C
#define PTYPE_VLC_BITS
Definition: rv40vlc2.h:641
uint32_t avail_cache[3 *4]
8x8 block available flags (for MV prediction)
Definition: rv34.h:119
#define MASK_CUR
Definition: rv40.c:290
#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:247
rv40_loop_filter_strength_func rv40_loop_filter_strength[2]
Definition: rv34dsp.h:74
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
MpegEncContext s
Definition: rv34.h:85
#define PTYPE_VLC_SIZE
Definition: rv40vlc2.h:640
int ff_init_vlc_sparse(VLC *vlc_arg, 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:275
int height
coded height
Definition: rv34.h:79
#define BTYPE_VLC_SIZE
Definition: rv40vlc2.h:676
#define AIC_MODE1_SIZE
Definition: rv40vlc2.h:428
#define BTYPE_VLC_BITS
Definition: rv40vlc2.h:677
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:124
RV30 and RV40 decoder common data declarations.
int mb_num
number of MBs of a picture
Definition: mpegvideo.h:130
#define src
Definition: vp8dsp.c:254
int start
Definition: rv34.h:77
AVCodec.
Definition: avcodec.h:3601
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:303
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
#define AV_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:984
uint8_t
#define av_cold
Definition: attributes.h:82
uint16_t * cbp_luma
CBP values for luma subblocks.
Definition: rv34.h:114
#define Y
Definition: vf_boxblur.c:76
static const uint8_t aic_mode1_vlc_bits[AIC_MODE1_NUM][AIC_MODE1_SIZE]
Definition: rv40vlc2.h:532
Definition: vf_geq.c:46
int width
coded width
Definition: rv34.h:78
#define MASK_C_RIGHT_COL
Definition: rv40.c:301
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:116
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:306
Skipped block.
Definition: rv34.h:49
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:126
#define MASK_Y_LAST_ROW
Definition: rv40.c:295
#define A(x)
Definition: vp56_arith.h:28
#define av_log(a,...)
static VLC aic_mode2_vlc[AIC_MODE2_NUM]
Definition: rv40.c:39
int quant
quantizer used for this slice
Definition: rv34.h:75
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:568
static double alpha(void *priv, double x, double y)
Definition: vf_geq.c:99
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int(* parse_slice_header)(struct RV34DecContext *r, GetBitContext *gb, SliceInfo *si)
Definition: rv34.h:126
static const uint8_t block_num_to_btype_vlc_num[12]
reverse of btype_vlc_syms
Definition: rv40vlc2.h:702
#define init_vlc(vlc, nb_bits, nb_codes,bits, bits_wrap, bits_size,codes, codes_wrap, codes_size,flags)
Definition: vlc.h:38
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
static const struct endianess table[]
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
const char * r
Definition: vf_curves.c:111
static const uint8_t dither[8][8]
Definition: vf_fspp.c:57
static int rv40_decode_mb_info(RV34DecContext *r)
Decode macroblock information.
Definition: rv40.c:227
#define MASK_Y_TOP_ROW
Definition: rv40.c:294
const char * name
Name of the codec implementation.
Definition: avcodec.h:3608
GetBitContext gb
Definition: mpegvideo.h:445
static const uint8_t ptype_vlc_syms[PTYPE_VLC_SIZE]
Definition: rv40vlc2.h:663
GLsizei count
Definition: opengl_enc.c:109
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1022
#define MASK_BOTTOM
Definition: rv40.c:292
Definition: vlc.h:26
void ff_mpeg_flush(AVCodecContext *avctx)
Definition: mpegvideo.c:2773
#define ONLY_IF_THREADS_ENABLED(x)
Define a function with only the non-default version specified.
Definition: internal.h:215
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:251
#define MASK_RIGHT
Definition: rv40.c:291
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:300
static int rv40_parse_slice_header(RV34DecContext *r, GetBitContext *gb, SliceInfo *si)
Definition: rv40.c:130
#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:181
static av_cold int rv40_decode_init(AVCodecContext *avctx)
Initialize decoder.
Definition: rv40.c:551
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:535
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
Definition: rv40.c:285
#define MASK_Y_LEFT_COL
Definition: rv40.c:296
#define MASK_TOP
Definition: rv40.c:293
int bits
Definition: vlc.h:27
static const uint8_t ptype_vlc_codes[NUM_PTYPE_VLCS][PTYPE_VLC_SIZE]
Definition: rv40vlc2.h:643
int table_allocated
Definition: vlc.h:29
int first_slice_line
used in MPEG-4 too to handle resync markers
Definition: mpegvideo.h:433
int ff_rv34_decode_init_thread_copy(AVCodecContext *avctx)
Definition: rv34.c:1528
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:131
#define MASK_C_TOP_ROW
Definition: rv40.c:298
main external API structure.
Definition: avcodec.h:1676
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:97
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:299
static void skip_bits1(GetBitContext *s)
Definition: get_bits.h:324
static const uint16_t aic_mode2_vlc_codes[AIC_MODE2_NUM][AIC_MODE2_SIZE]
Definition: rv40vlc2.h:56
struct AVFrame * f
Definition: mpegpicture.h:46
#define MASK_C_LAST_ROW
Definition: rv40.c:299
static const int16_t mode2_offs[]
Definition: rv40.c:42
av_cold int ff_rv34_decode_init(AVCodecContext *avctx)
Initialize decoder.
Definition: rv34.c:1486
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
Definition: mpegvideo.h:132
int dim
int ff_rv34_decode_frame(AVCodecContext *avctx, void *data, int *got_picture_ptr, AVPacket *avpkt)
Definition: rv34.c:1634
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:209
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
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:198
static VLC aic_top_vlc
Definition: rv40.c:38
MpegEncContext.
Definition: mpegvideo.h:78
#define AIC_TOP_SIZE
Definition: rv40vlc2.h:37
av_cold int ff_rv34_decode_end(AVCodecContext *avctx)
Definition: rv34.c:1844
int8_t * qscale_table
Definition: mpegpicture.h:50
struct AVCodecContext * avctx
Definition: mpegvideo.h:95
int(* decode_mb_info)(struct RV34DecContext *r)
Definition: rv34.h:127
static const uint8_t aic_mode1_vlc_codes[AIC_MODE1_NUM][AIC_MODE1_SIZE]
Definition: rv40vlc2.h:431
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
#define MASK_Y_RIGHT_COL
Definition: rv40.c:297
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
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:127
static double clip(void *opaque, double val)
Clip value val in the minval - maxval range.
Definition: vf_lut.c:157
Definition: rv40.c:284
#define INIT_VLC_USE_NEW_STATIC
Definition: vlc.h:55
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:1556
#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:286
int ff_rv34_get_start_offset(GetBitContext *gb, int mb_size)
Decode starting slice position.
Definition: rv34.c:330
#define IS_INTRA(x, y)
decoder context
Definition: rv34.h:84
void * priv_data
Definition: avcodec.h:1718
#define NUM_BTYPE_VLCS
tables used for P-frame macroblock type decoding
Definition: rv40vlc2.h:675
RV40BlockPos
Definition: rv40.c:283
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: vlc.h:28
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:164
#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: mpegpicture.h:56
int type
slice type (intra, inter)
Definition: rv34.h:74
#define AIC_MODE2_BITS
Definition: rv40vlc2.h:54
static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
Definition: ffmpeg.c:2045
#define VLC_TYPE
Definition: vlc.h:24
static unsigned get_interleaved_ue_golomb(GetBitContext *gb)
Definition: golomb.h:115
miscellaneous RV40 tables
#define stride
static const int neighbour_offs_y[4]
Definition: rv40.c:304
int rv30
indicates which RV variant 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:60
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:959
RV34DSPContext rdsp
Definition: rv34.h:86
static void rv40_loop_filter(RV34DecContext *r, int row)
RV40 loop filtering function.
Definition: rv40.c:337
static const uint8_t aic_mode2_vlc_bits[AIC_MODE2_NUM][AIC_MODE2_SIZE]
Definition: rv40vlc2.h:239
Predicted.
Definition: avutil.h:269
int pts
frame timestamp
Definition: rv34.h:80
uint8_t * cbp_chroma
CBP values for chroma subblocks.
Definition: rv34.h:115