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indeo4.c
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1 /*
2  * Indeo Video Interactive v4 compatible decoder
3  * Copyright (c) 2009-2011 Maxim Poliakovski
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  * Indeo Video Interactive version 4 decoder
25  *
26  * Indeo 4 data is usually transported within .avi or .mov files.
27  * Known FOURCCs: 'IV41'
28  */
29 
30 #define BITSTREAM_READER_LE
31 #include "avcodec.h"
32 #include "get_bits.h"
33 #include "indeo4data.h"
34 #include "internal.h"
35 #include "ivi.h"
36 #include "ivi_dsp.h"
37 
38 #define IVI4_PIC_SIZE_ESC 7
39 
40 
41 static const struct {
45 } transforms[18] = {
53  { NULL, NULL, 0 }, /* inverse DCT 8x8 */
54  { NULL, NULL, 0 }, /* inverse DCT 8x1 */
55  { NULL, NULL, 0 }, /* inverse DCT 1x8 */
58  { NULL, NULL, 0 }, /* no transform 4x4 */
63  { NULL, NULL, 0 }, /* inverse DCT 4x4 */
64 };
65 
66 /**
67  * Decode subdivision of a plane.
68  * This is a simplified version that checks for two supported subdivisions:
69  * - 1 wavelet band per plane, size factor 1:1, code pattern: 3
70  * - 4 wavelet bands per plane, size factor 1:4, code pattern: 2,3,3,3,3
71  * Anything else is either unsupported or corrupt.
72  *
73  * @param[in,out] gb the GetBit context
74  * @return number of wavelet bands or 0 on error
75  */
77 {
78  int i;
79 
80  switch (get_bits(gb, 2)) {
81  case 3:
82  return 1;
83  case 2:
84  for (i = 0; i < 4; i++)
85  if (get_bits(gb, 2) != 3)
86  return 0;
87  return 4;
88  default:
89  return 0;
90  }
91 }
92 
93 static inline int scale_tile_size(int def_size, int size_factor)
94 {
95  return size_factor == 15 ? def_size : (size_factor + 1) << 5;
96 }
97 
98 /**
99  * Decode Indeo 4 picture header.
100  *
101  * @param[in,out] ctx pointer to the decoder context
102  * @param[in] avctx pointer to the AVCodecContext
103  * @return result code: 0 = OK, negative number = error
104  */
106 {
107  int pic_size_indx, i, p;
108  IVIPicConfig pic_conf;
109 
110  if (get_bits(&ctx->gb, 18) != 0x3FFF8) {
111  av_log(avctx, AV_LOG_ERROR, "Invalid picture start code!\n");
112  return AVERROR_INVALIDDATA;
113  }
114 
115  ctx->prev_frame_type = ctx->frame_type;
116  ctx->frame_type = get_bits(&ctx->gb, 3);
117  if (ctx->frame_type == 7) {
118  av_log(avctx, AV_LOG_ERROR, "Invalid frame type: %d\n", ctx->frame_type);
119  return AVERROR_INVALIDDATA;
120  }
121 
122  if (ctx->frame_type == IVI4_FRAMETYPE_BIDIR)
123  ctx->has_b_frames = 1;
124 
125  ctx->has_transp = get_bits1(&ctx->gb);
126 
127  /* unknown bit: Mac decoder ignores this bit, XANIM returns error */
128  if (get_bits1(&ctx->gb)) {
129  av_log(avctx, AV_LOG_ERROR, "Sync bit is set!\n");
130  return AVERROR_INVALIDDATA;
131  }
132 
133  ctx->data_size = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 24) : 0;
134 
135  /* null frames don't contain anything else so we just return */
137  ff_dlog(avctx, "Null frame encountered!\n");
138  return 0;
139  }
140 
141  /* Check key lock status. If enabled - ignore lock word. */
142  /* Usually we have to prompt the user for the password, but */
143  /* we don't do that because Indeo 4 videos can be decoded anyway */
144  if (get_bits1(&ctx->gb)) {
145  skip_bits_long(&ctx->gb, 32);
146  ff_dlog(avctx, "Password-protected clip!\n");
147  }
148 
149  pic_size_indx = get_bits(&ctx->gb, 3);
150  if (pic_size_indx == IVI4_PIC_SIZE_ESC) {
151  pic_conf.pic_height = get_bits(&ctx->gb, 16);
152  pic_conf.pic_width = get_bits(&ctx->gb, 16);
153  } else {
154  pic_conf.pic_height = ivi4_common_pic_sizes[pic_size_indx * 2 + 1];
155  pic_conf.pic_width = ivi4_common_pic_sizes[pic_size_indx * 2 ];
156  }
157 
158  /* Decode tile dimensions. */
159  ctx->uses_tiling = get_bits1(&ctx->gb);
160  if (ctx->uses_tiling) {
161  pic_conf.tile_height = scale_tile_size(pic_conf.pic_height, get_bits(&ctx->gb, 4));
162  pic_conf.tile_width = scale_tile_size(pic_conf.pic_width, get_bits(&ctx->gb, 4));
163  } else {
164  pic_conf.tile_height = pic_conf.pic_height;
165  pic_conf.tile_width = pic_conf.pic_width;
166  }
167 
168  /* Decode chroma subsampling. We support only 4:4 aka YVU9. */
169  if (get_bits(&ctx->gb, 2)) {
170  av_log(avctx, AV_LOG_ERROR, "Only YVU9 picture format is supported!\n");
171  return AVERROR_INVALIDDATA;
172  }
173  pic_conf.chroma_height = (pic_conf.pic_height + 3) >> 2;
174  pic_conf.chroma_width = (pic_conf.pic_width + 3) >> 2;
175 
176  /* decode subdivision of the planes */
177  pic_conf.luma_bands = decode_plane_subdivision(&ctx->gb);
178  pic_conf.chroma_bands = 0;
179  if (pic_conf.luma_bands)
180  pic_conf.chroma_bands = decode_plane_subdivision(&ctx->gb);
181  ctx->is_scalable = pic_conf.luma_bands != 1 || pic_conf.chroma_bands != 1;
182  if (ctx->is_scalable && (pic_conf.luma_bands != 4 || pic_conf.chroma_bands != 1)) {
183  av_log(avctx, AV_LOG_ERROR, "Scalability: unsupported subdivision! Luma bands: %d, chroma bands: %d\n",
184  pic_conf.luma_bands, pic_conf.chroma_bands);
185  return AVERROR_INVALIDDATA;
186  }
187 
188  /* check if picture layout was changed and reallocate buffers */
189  if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf)) {
190  if (ff_ivi_init_planes(ctx->planes, &pic_conf, 1)) {
191  av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
192  ctx->pic_conf.luma_bands = 0;
193  return AVERROR(ENOMEM);
194  }
195 
196  ctx->pic_conf = pic_conf;
197 
198  /* set default macroblock/block dimensions */
199  for (p = 0; p <= 2; p++) {
200  for (i = 0; i < (!p ? pic_conf.luma_bands : pic_conf.chroma_bands); i++) {
201  ctx->planes[p].bands[i].mb_size = !p ? (!ctx->is_scalable ? 16 : 8) : 4;
202  ctx->planes[p].bands[i].blk_size = !p ? 8 : 4;
203  }
204  }
205 
207  ctx->pic_conf.tile_height)) {
208  av_log(avctx, AV_LOG_ERROR,
209  "Couldn't reallocate internal structures!\n");
210  return AVERROR(ENOMEM);
211  }
212  }
213 
214  ctx->frame_num = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 20) : 0;
215 
216  /* skip decTimeEst field if present */
217  if (get_bits1(&ctx->gb))
218  skip_bits(&ctx->gb, 8);
219 
220  /* decode macroblock and block huffman codebooks */
221  if (ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_MB_HUFF, &ctx->mb_vlc, avctx) ||
222  ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_BLK_HUFF, &ctx->blk_vlc, avctx))
223  return AVERROR_INVALIDDATA;
224 
225  ctx->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
226 
227  ctx->in_imf = get_bits1(&ctx->gb);
228  ctx->in_q = get_bits1(&ctx->gb);
229 
230  ctx->pic_glob_quant = get_bits(&ctx->gb, 5);
231 
232  /* TODO: ignore this parameter if unused */
233  ctx->unknown1 = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 0;
234 
235  ctx->checksum = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 16) : 0;
236 
237  /* skip picture header extension if any */
238  while (get_bits1(&ctx->gb)) {
239  ff_dlog(avctx, "Pic hdr extension encountered!\n");
240  if (get_bits_left(&ctx->gb) < 10)
241  return AVERROR_INVALIDDATA;
242  skip_bits(&ctx->gb, 8);
243  }
244 
245  if (get_bits1(&ctx->gb)) {
246  av_log(avctx, AV_LOG_ERROR, "Bad blocks bits encountered!\n");
247  }
248 
249  align_get_bits(&ctx->gb);
250 
251  return 0;
252 }
253 
254 
255 /**
256  * Decode Indeo 4 band header.
257  *
258  * @param[in,out] ctx pointer to the decoder context
259  * @param[in,out] band pointer to the band descriptor
260  * @param[in] avctx pointer to the AVCodecContext
261  * @return result code: 0 = OK, negative number = error
262  */
264  AVCodecContext *avctx)
265 {
266  int plane, band_num, indx, transform_id, scan_indx;
267  int i;
268  int quant_mat;
269 
270  plane = get_bits(&ctx->gb, 2);
271  band_num = get_bits(&ctx->gb, 4);
272  if (band->plane != plane || band->band_num != band_num) {
273  av_log(avctx, AV_LOG_ERROR, "Invalid band header sequence!\n");
274  return AVERROR_INVALIDDATA;
275  }
276 
277  band->is_empty = get_bits1(&ctx->gb);
278  if (!band->is_empty) {
279  int old_blk_size = band->blk_size;
280  /* skip header size
281  * If header size is not given, header size is 4 bytes. */
282  if (get_bits1(&ctx->gb))
283  skip_bits(&ctx->gb, 16);
284 
285  band->is_halfpel = get_bits(&ctx->gb, 2);
286  if (band->is_halfpel >= 2) {
287  av_log(avctx, AV_LOG_ERROR, "Invalid/unsupported mv resolution: %d!\n",
288  band->is_halfpel);
289  return AVERROR_INVALIDDATA;
290  }
291  if (!band->is_halfpel)
292  ctx->uses_fullpel = 1;
293 
294  band->checksum_present = get_bits1(&ctx->gb);
295  if (band->checksum_present)
296  band->checksum = get_bits(&ctx->gb, 16);
297 
298  indx = get_bits(&ctx->gb, 2);
299  if (indx == 3) {
300  av_log(avctx, AV_LOG_ERROR, "Invalid block size!\n");
301  return AVERROR_INVALIDDATA;
302  }
303  band->mb_size = 16 >> indx;
304  band->blk_size = 8 >> (indx >> 1);
305 
306  band->inherit_mv = get_bits1(&ctx->gb);
307  band->inherit_qdelta = get_bits1(&ctx->gb);
308 
309  band->glob_quant = get_bits(&ctx->gb, 5);
310 
311  if (!get_bits1(&ctx->gb) || ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
312  transform_id = get_bits(&ctx->gb, 5);
313  if (transform_id >= FF_ARRAY_ELEMS(transforms) ||
314  !transforms[transform_id].inv_trans) {
315  avpriv_request_sample(avctx, "Transform %d", transform_id);
316  return AVERROR_PATCHWELCOME;
317  }
318  if ((transform_id >= 7 && transform_id <= 9) ||
319  transform_id == 17) {
320  avpriv_request_sample(avctx, "DCT transform");
321  return AVERROR_PATCHWELCOME;
322  }
323 
324  if (transform_id < 10 && band->blk_size < 8) {
325  av_log(avctx, AV_LOG_ERROR, "wrong transform size!\n");
326  return AVERROR_INVALIDDATA;
327  }
328  if ((transform_id >= 0 && transform_id <= 2) || transform_id == 10)
329  ctx->uses_haar = 1;
330 
331  band->inv_transform = transforms[transform_id].inv_trans;
332  band->dc_transform = transforms[transform_id].dc_trans;
333  band->is_2d_trans = transforms[transform_id].is_2d_trans;
334 
335  if (transform_id < 10)
336  band->transform_size = 8;
337  else
338  band->transform_size = 4;
339 
340  if (band->blk_size != band->transform_size) {
341  av_log(avctx, AV_LOG_ERROR, "transform and block size mismatch (%d != %d)\n", band->transform_size, band->blk_size);
342  return AVERROR_INVALIDDATA;
343  }
344 
345  scan_indx = get_bits(&ctx->gb, 4);
346  if (scan_indx == 15) {
347  av_log(avctx, AV_LOG_ERROR, "Custom scan pattern encountered!\n");
348  return AVERROR_INVALIDDATA;
349  }
350  if (scan_indx > 4 && scan_indx < 10) {
351  if (band->blk_size != 4) {
352  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
353  return AVERROR_INVALIDDATA;
354  }
355  } else if (band->blk_size != 8) {
356  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
357  return AVERROR_INVALIDDATA;
358  }
359 
360  band->scan = scan_index_to_tab[scan_indx];
361  band->scan_size = band->blk_size;
362 
363  quant_mat = get_bits(&ctx->gb, 5);
364  if (quant_mat == 31) {
365  av_log(avctx, AV_LOG_ERROR, "Custom quant matrix encountered!\n");
366  return AVERROR_INVALIDDATA;
367  }
368  if (quant_mat >= FF_ARRAY_ELEMS(quant_index_to_tab)) {
369  avpriv_request_sample(avctx, "Quantization matrix %d",
370  quant_mat);
371  return AVERROR_INVALIDDATA;
372  }
373  band->quant_mat = quant_mat;
374  } else {
375  if (old_blk_size != band->blk_size) {
376  av_log(avctx, AV_LOG_ERROR,
377  "The band block size does not match the configuration "
378  "inherited\n");
379  return AVERROR_INVALIDDATA;
380  }
381  }
382  if (quant_index_to_tab[band->quant_mat] > 4 && band->blk_size == 4) {
383  av_log(avctx, AV_LOG_ERROR, "Invalid quant matrix for 4x4 block encountered!\n");
384  band->quant_mat = 0;
385  return AVERROR_INVALIDDATA;
386  }
387  if (band->scan_size != band->blk_size) {
388  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
389  return AVERROR_INVALIDDATA;
390  }
391  if (band->transform_size == 8 && band->blk_size < 8) {
392  av_log(avctx, AV_LOG_ERROR, "mismatching transform_size!\n");
393  return AVERROR_INVALIDDATA;
394  }
395 
396  /* decode block huffman codebook */
397  if (!get_bits1(&ctx->gb))
398  band->blk_vlc.tab = ctx->blk_vlc.tab;
399  else
400  if (ff_ivi_dec_huff_desc(&ctx->gb, 1, IVI_BLK_HUFF,
401  &band->blk_vlc, avctx))
402  return AVERROR_INVALIDDATA;
403 
404  /* select appropriate rvmap table for this band */
405  band->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
406 
407  /* decode rvmap probability corrections if any */
408  band->num_corr = 0; /* there is no corrections */
409  if (get_bits1(&ctx->gb)) {
410  band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */
411  if (band->num_corr > 61) {
412  av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n",
413  band->num_corr);
414  return AVERROR_INVALIDDATA;
415  }
416 
417  /* read correction pairs */
418  for (i = 0; i < band->num_corr * 2; i++)
419  band->corr[i] = get_bits(&ctx->gb, 8);
420  }
421  }
422 
423  if (band->blk_size == 8) {
425  band->inter_base = &ivi4_quant_8x8_inter[quant_index_to_tab[band->quant_mat]][0];
426  } else {
428  band->inter_base = &ivi4_quant_4x4_inter[quant_index_to_tab[band->quant_mat]][0];
429  }
430 
431  /* Indeo 4 doesn't use scale tables */
432  band->intra_scale = NULL;
433  band->inter_scale = NULL;
434 
435  align_get_bits(&ctx->gb);
436 
437  if (!band->scan) {
438  av_log(avctx, AV_LOG_ERROR, "band->scan not set\n");
439  return AVERROR_INVALIDDATA;
440  }
441 
442  return 0;
443 }
444 
445 
446 /**
447  * Decode information (block type, cbp, quant delta, motion vector)
448  * for all macroblocks in the current tile.
449  *
450  * @param[in,out] ctx pointer to the decoder context
451  * @param[in,out] band pointer to the band descriptor
452  * @param[in,out] tile pointer to the tile descriptor
453  * @param[in] avctx pointer to the AVCodecContext
454  * @return result code: 0 = OK, negative number = error
455  */
457  IVITile *tile, AVCodecContext *avctx)
458 {
459  int x, y, mv_x, mv_y, mv_delta, offs, mb_offset, blks_per_mb,
460  mv_scale, mb_type_bits, s;
461  IVIMbInfo *mb, *ref_mb;
462  int row_offset = band->mb_size * band->pitch;
463 
464  mb = tile->mbs;
465  ref_mb = tile->ref_mbs;
466  offs = tile->ypos * band->pitch + tile->xpos;
467 
468  blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
469  mb_type_bits = ctx->frame_type == IVI4_FRAMETYPE_BIDIR ? 2 : 1;
470 
471  /* scale factor for motion vectors */
472  mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
473  mv_x = mv_y = 0;
474 
475  if (((tile->width + band->mb_size-1)/band->mb_size) * ((tile->height + band->mb_size-1)/band->mb_size) != tile->num_MBs) {
476  av_log(avctx, AV_LOG_ERROR, "num_MBs mismatch %d %d %d %d\n", tile->width, tile->height, band->mb_size, tile->num_MBs);
477  return -1;
478  }
479 
480  for (y = tile->ypos; y < tile->ypos + tile->height; y += band->mb_size) {
481  mb_offset = offs;
482 
483  for (x = tile->xpos; x < tile->xpos + tile->width; x += band->mb_size) {
484  mb->xpos = x;
485  mb->ypos = y;
486  mb->buf_offs = mb_offset;
487  mb->b_mv_x =
488  mb->b_mv_y = 0;
489 
490  if (get_bits1(&ctx->gb)) {
491  if (ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
492  av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
493  return AVERROR_INVALIDDATA;
494  }
495  mb->type = 1; /* empty macroblocks are always INTER */
496  mb->cbp = 0; /* all blocks are empty */
497 
498  mb->q_delta = 0;
499  if (!band->plane && !band->band_num && ctx->in_q) {
500  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
501  IVI_VLC_BITS, 1);
502  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
503  }
504 
505  mb->mv_x = mb->mv_y = 0; /* no motion vector coded */
506  if (band->inherit_mv && ref_mb) {
507  /* motion vector inheritance */
508  if (mv_scale) {
509  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
510  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
511  } else {
512  mb->mv_x = ref_mb->mv_x;
513  mb->mv_y = ref_mb->mv_y;
514  }
515  }
516  } else {
517  if (band->inherit_mv) {
518  /* copy mb_type from corresponding reference mb */
519  if (!ref_mb) {
520  av_log(avctx, AV_LOG_ERROR, "ref_mb unavailable\n");
521  return AVERROR_INVALIDDATA;
522  }
523  mb->type = ref_mb->type;
524  } else if (ctx->frame_type == IVI4_FRAMETYPE_INTRA ||
526  mb->type = 0; /* mb_type is always INTRA for intra-frames */
527  } else {
528  mb->type = get_bits(&ctx->gb, mb_type_bits);
529  }
530 
531  mb->cbp = get_bits(&ctx->gb, blks_per_mb);
532 
533  mb->q_delta = 0;
534  if (band->inherit_qdelta) {
535  if (ref_mb) mb->q_delta = ref_mb->q_delta;
536  } else if (mb->cbp || (!band->plane && !band->band_num &&
537  ctx->in_q)) {
538  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
539  IVI_VLC_BITS, 1);
540  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
541  }
542 
543  if (!mb->type) {
544  mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */
545  } else {
546  if (band->inherit_mv) {
547  if (ref_mb)
548  /* motion vector inheritance */
549  if (mv_scale) {
550  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
551  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
552  } else {
553  mb->mv_x = ref_mb->mv_x;
554  mb->mv_y = ref_mb->mv_y;
555  }
556  } else {
557  /* decode motion vector deltas */
558  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
559  IVI_VLC_BITS, 1);
560  mv_y += IVI_TOSIGNED(mv_delta);
561  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
562  IVI_VLC_BITS, 1);
563  mv_x += IVI_TOSIGNED(mv_delta);
564  mb->mv_x = mv_x;
565  mb->mv_y = mv_y;
566  if (mb->type == 3) {
567  mv_delta = get_vlc2(&ctx->gb,
568  ctx->mb_vlc.tab->table,
569  IVI_VLC_BITS, 1);
570  mv_y += IVI_TOSIGNED(mv_delta);
571  mv_delta = get_vlc2(&ctx->gb,
572  ctx->mb_vlc.tab->table,
573  IVI_VLC_BITS, 1);
574  mv_x += IVI_TOSIGNED(mv_delta);
575  mb->b_mv_x = -mv_x;
576  mb->b_mv_y = -mv_y;
577  }
578  }
579  if (mb->type == 2) {
580  mb->b_mv_x = -mb->mv_x;
581  mb->b_mv_y = -mb->mv_y;
582  mb->mv_x = 0;
583  mb->mv_y = 0;
584  }
585  }
586  }
587 
588  s= band->is_halfpel;
589  if (mb->type)
590  if ( x + (mb->mv_x >>s) + (y+ (mb->mv_y >>s))*band->pitch < 0 ||
591  x + ((mb->mv_x+s)>>s) + band->mb_size - 1
592  + (y+band->mb_size - 1 +((mb->mv_y+s)>>s))*band->pitch > band->bufsize -1) {
593  av_log(avctx, AV_LOG_ERROR, "motion vector %d %d outside reference\n", x*s + mb->mv_x, y*s + mb->mv_y);
594  return AVERROR_INVALIDDATA;
595  }
596 
597  mb++;
598  if (ref_mb)
599  ref_mb++;
600  mb_offset += band->mb_size;
601  }
602 
603  offs += row_offset;
604  }
605 
606  align_get_bits(&ctx->gb);
607 
608  return 0;
609 }
610 
611 
612 /**
613  * Rearrange decoding and reference buffers.
614  *
615  * @param[in,out] ctx pointer to the decoder context
616  */
618 {
619  int is_prev_ref = 0, is_ref = 0;
620 
621  switch (ctx->prev_frame_type) {
625  is_prev_ref = 1;
626  break;
627  }
628 
629  switch (ctx->frame_type) {
633  is_ref = 1;
634  break;
635  }
636 
637  if (is_prev_ref && is_ref) {
638  FFSWAP(int, ctx->dst_buf, ctx->ref_buf);
639  } else if (is_prev_ref) {
640  FFSWAP(int, ctx->ref_buf, ctx->b_ref_buf);
641  FFSWAP(int, ctx->dst_buf, ctx->ref_buf);
642  }
643 }
644 
645 
647 {
649 }
650 
651 
653 {
654  IVI45DecContext *ctx = avctx->priv_data;
655 
657 
658  /* copy rvmap tables in our context so we can apply changes to them */
659  memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
660 
661  /* Force allocation of the internal buffers */
662  /* during picture header decoding. */
663  ctx->pic_conf.pic_width = 0;
664  ctx->pic_conf.pic_height = 0;
665 
666  avctx->pix_fmt = AV_PIX_FMT_YUV410P;
667 
673 
674  ctx->is_indeo4 = 1;
675  ctx->show_indeo4_info = 1;
676 
677  ctx->dst_buf = 0;
678  ctx->ref_buf = 1;
679  ctx->b_ref_buf = 3; /* buffer 2 is used for scalability mode */
680  ctx->p_frame = av_frame_alloc();
681  if (!ctx->p_frame)
682  return AVERROR(ENOMEM);
683 
684  return 0;
685 }
686 
687 
689  .name = "indeo4",
690  .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 4"),
691  .type = AVMEDIA_TYPE_VIDEO,
692  .id = AV_CODEC_ID_INDEO4,
693  .priv_data_size = sizeof(IVI45DecContext),
694  .init = decode_init,
695  .close = ff_ivi_decode_close,
697  .capabilities = AV_CODEC_CAP_DR1,
698 };
int plane
Definition: avisynth_c.h:422
int is_empty
= 1 if this band doesn't contain any data
Definition: ivi.h:157
uint32_t data_size
size of the frame data in bytes from picture header
Definition: ivi.h:220
uint8_t type
macroblock type: 0 - INTRA, 1 - INTER
Definition: ivi.h:114
int num_MBs
number of macroblocks in this tile
Definition: ivi.h:135
static const uint16_t ivi4_quant_8x8_intra[9][64]
Indeo 4 dequant tables.
Definition: indeo4data.h:89
#define NULL
Definition: coverity.c:32
static int scale_tile_size(int def_size, int size_factor)
Definition: indeo4.c:93
const char * s
Definition: avisynth_c.h:768
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static av_always_inline void mv_scale(Mv *dst, Mv *src, int td, int tb)
Definition: hevc_mvs.c:115
This file contains data needed for the Indeo 4 decoder.
InvTransformPtr * inv_transform
Definition: ivi.h:177
#define IVI4_PIC_SIZE_ESC
Definition: indeo4.c:38
static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
Decode Indeo 4 picture header.
Definition: indeo4.c:105
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:261
void ff_ivi_row_haar8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
one-dimensional inverse 8-point Haar transform on rows for Indeo 4
Definition: ivi_dsp.c:325
static int decode_plane_subdivision(GetBitContext *gb)
Decode subdivision of a plane.
Definition: indeo4.c:76
int(* decode_pic_hdr)(struct IVI45DecContext *ctx, AVCodecContext *avctx)
Definition: ivi.h:258
static void skip_bits_long(GetBitContext *s, int n)
Definition: get_bits.h:204
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int8_t b_mv_y
second motion vector (y component)
Definition: ivi.h:120
av_cold int ff_ivi_decode_close(AVCodecContext *avctx)
Close Indeo5 decoder and clean up its context.
Definition: ivi.c:1200
int(* decode_mb_info)(struct IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx)
Definition: ivi.h:260
void ff_ivi_dc_col_slant(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
DC-only inverse column slant transform.
Definition: ivi_dsp.c:694
#define IVI_VLC_BITS
max number of bits of the ivi's huffman codes
Definition: ivi.h:49
int dst_buf
buffer index for the currently decoded frame
Definition: ivi.h:233
empty frame with no data
Definition: ivi.h:45
int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ivi.c:1054
DSP functions (inverse transforms, motion compensations, wavelet recomposition) for Indeo Video Inter...
void ff_ivi_col_haar8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
one-dimensional inverse 8-point Haar transform on columns for Indeo 4
Definition: ivi_dsp.c:350
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1973
int is_halfpel
precision of the motion compensation: 0 - fullpel, 1 - halfpel
Definition: ivi.h:160
uint8_t chroma_bands
Definition: ivi.h:210
int plane
plane number this band belongs to
Definition: ivi.h:145
int bufsize
band buffer size in bytes
Definition: ivi.h:183
IVIPicConfig pic_conf
Definition: ivi.h:229
void ff_ivi_row_slant8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
inverse 1D row slant transform
Definition: ivi_dsp.c:629
void ff_ivi_dc_slant_2d(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
DC-only two-dimensional inverse slant transform.
Definition: ivi_dsp.c:616
AVCodec.
Definition: avcodec.h:3721
int quant_mat
dequant matrix index
Definition: ivi.h:164
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
uint8_t has_b_frames
Definition: ivi.h:252
void( DCTransformPtr)(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
Definition: ivi.h:91
int8_t b_mv_x
second motion vector (x component)
Definition: ivi.h:119
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
uint8_t uses_tiling
Definition: ivi.h:254
uint8_t luma_bands
Definition: ivi.h:209
ptrdiff_t pitch
pitch associated with the buffers above
Definition: ivi.h:156
VLC * tab
index of one of the predefined tables or "7" for custom one
Definition: ivi.h:66
#define av_cold
Definition: attributes.h:82
void ff_ivi_put_pixels_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
Copy the pixels into the frame buffer.
Definition: ivi_dsp.c:751
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:150
#define mb
uint8_t pic_glob_quant
Definition: ivi.h:244
const uint16_t * inter_base
quantization matrix for inter blocks
Definition: ivi.h:185
av_cold int ff_ivi_init_planes(IVIPlaneDesc *planes, const IVIPicConfig *cfg, int is_indeo4)
Initialize planes (prepares descriptors, allocates buffers etc).
Definition: ivi.c:305
uint16_t pic_height
Definition: ivi.h:204
static const uint16_t ivi4_common_pic_sizes[14]
standard picture dimensions
Definition: indeo4data.h:37
void ff_ivi_inverse_haar_4x4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
two-dimensional inverse Haar 4x4 transform for Indeo 4
Definition: ivi_dsp.c:379
int inherit_mv
tells if motion vector is inherited from reference macroblock
Definition: ivi.h:161
static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Decode Indeo 4 band header.
Definition: indeo4.c:263
uint16_t tile_height
Definition: ivi.h:208
GetBitContext gb
Definition: ivi.h:214
uint16_t chroma_width
Definition: ivi.h:205
static const uint16_t ivi4_quant_8x8_inter[9][64]
Definition: indeo4data.h:182
uint8_t cbp
coded block pattern
Definition: ivi.h:115
#define ff_dlog(a,...)
void ff_ivi_col_slant4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
inverse 1D column slant transform
Definition: ivi_dsp.c:728
uint16_t checksum
frame checksum
Definition: ivi.h:227
bitstream reader API header.
void ff_ivi_put_dc_pixel_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
Copy the DC coefficient into the first pixel of the block and zero all others.
Definition: ivi_dsp.c:761
uint16_t pic_width
Definition: ivi.h:203
static const uint16_t ivi4_quant_4x4_inter[5][16]
Definition: indeo4data.h:308
intra frame with slightly different bitstream coding
Definition: ivi.h:41
IVIPlaneDesc planes[3]
color planes
Definition: ivi.h:230
Huffman table is used for coding macroblocks.
Definition: ivi.h:75
#define av_log(a,...)
const uint16_t * intra_base
quantization matrix for intra blocks
Definition: ivi.h:184
uint8_t unknown1
Definition: ivi.h:245
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:587
int blk_size
block size
Definition: ivi.h:159
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
uint8_t corr[61 *2]
rvmap correction pairs
Definition: ivi.h:172
RVMapDesc rvmap_tabs[9]
local corrected copy of the static rvmap tables
Definition: ivi.h:215
void ff_ivi_inverse_haar_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
two-dimensional inverse Haar 8x8 transform for Indeo 4
Definition: ivi_dsp.c:270
void ff_ivi_dc_row_slant(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
DC-only inverse row slant transform.
Definition: ivi_dsp.c:649
#define AVERROR(e)
Definition: error.h:43
uint8_t in_q
flag for explicitly stored quantiser delta
Definition: ivi.h:243
bidirectional frame
Definition: ivi.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
int show_indeo4_info
Definition: ivi.h:251
int is_indeo4
Definition: ivi.h:267
av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height)
Initialize tile and macroblock descriptors.
Definition: ivi.c:421
DCTransformPtr * dc_trans
Definition: indeo4.c:43
int ref_buf
inter frame reference buffer index
Definition: ivi.h:234
DCTransformPtr * dc_transform
Definition: ivi.h:179
This file contains structures and macros shared by both Indeo4 and Indeo5 decoders.
const char * name
Name of the codec implementation.
Definition: avcodec.h:3728
static int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
compare some properties of two pictures
Definition: ivi.h:274
static const struct @75 transforms[18]
int inherit_qdelta
tells if quantiser delta is inherited from reference macroblock
Definition: ivi.h:162
uint32_t frame_num
Definition: ivi.h:217
AVFrame * p_frame
Definition: ivi.h:269
int(* decode_band_hdr)(struct IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Definition: ivi.h:259
const RVMapDesc ff_ivi_rvmap_tabs[9]
Run-value (RLE) tables.
Definition: ivi.c:1251
int is_scalable
Definition: ivi.h:221
int is_2d_trans
Definition: indeo4.c:44
IVIMbInfo * mbs
array of macroblock descriptors
Definition: ivi.h:136
AVFormatContext * ctx
Definition: movenc.c:48
static void switch_buffers(IVI45DecContext *ctx)
Rearrange decoding and reference buffers.
Definition: indeo4.c:617
const uint8_t * inter_scale
quantization coefficient for inter blocks
Definition: ivi.h:187
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:554
void ff_ivi_col_slant8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
inverse 1D column slant transform
Definition: ivi_dsp.c:667
int ff_ivi_dec_huff_desc(GetBitContext *gb, int desc_coded, int which_tab, IVIHuffTab *huff_tab, AVCodecContext *avctx)
Decode a huffman codebook descriptor from the bitstream and select specified huffman table...
Definition: ivi.c:226
uint16_t chroma_height
Definition: ivi.h:206
static const uint8_t *const scan_index_to_tab[15]
Definition: indeo4data.h:63
int8_t q_delta
quant delta
Definition: ivi.h:116
static const uint8_t quant_index_to_tab[22]
Table for mapping quant matrix index from the bitstream into internal quant table number...
Definition: indeo4data.h:345
#define FF_ARRAY_ELEMS(a)
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
uint16_t tile_width
Definition: ivi.h:207
non-droppable P-frame
Definition: ivi.h:42
int ypos
Definition: ivi.h:129
IVIHuffTab mb_vlc
current macroblock table descriptor
Definition: ivi.h:238
int is_2d_trans
1 indicates that the two-dimensional inverse transform is used
Definition: ivi.h:180
void ff_ivi_dc_haar_2d(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
DC-only two-dimensional inverse Haar transform for Indeo 4.
Definition: ivi_dsp.c:472
Libavcodec external API header.
int glob_quant
quant base for this band
Definition: ivi.h:165
void ff_ivi_row_haar4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
one-dimensional inverse 4-point Haar transform on rows for Indeo 4
Definition: ivi_dsp.c:426
int height
Definition: ivi.h:131
main external API structure.
Definition: avcodec.h:1745
void ff_ivi_col_haar4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
one-dimensional inverse 4-point Haar transform on columns for Indeo 4
Definition: ivi_dsp.c:448
int num_corr
number of correction entries
Definition: ivi.h:171
static int ivi_scale_mv(int mv, int mv_scale)
scale motion vector
Definition: ivi.h:293
information for Indeo tile
Definition: ivi.h:127
int(* is_nonnull_frame)(struct IVI45DecContext *ctx)
Definition: ivi.h:262
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:313
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
uint8_t in_imf
Definition: ivi.h:242
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:306
uint8_t uses_haar
Definition: ivi.h:255
static const uint16_t ivi4_quant_4x4_intra[5][16]
Definition: indeo4data.h:275
void(* switch_buffers)(struct IVI45DecContext *ctx)
Definition: ivi.h:261
IVIBandDesc * bands
array of band descriptors
Definition: ivi.h:198
void( InvTransformPtr)(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
Declare inverse transform function types.
Definition: ivi.h:90
int32_t checksum
for debug purposes
Definition: ivi.h:181
int rvmap_sel
rvmap table selector
Definition: ivi.h:173
int8_t mv_x
motion vector (x component)
Definition: ivi.h:117
int8_t mv_y
motion vector (y component)
Definition: ivi.h:118
#define IVI_TOSIGNED(val)
convert unsigned values into signed ones (the sign is in the LSB)
Definition: ivi.h:290
int mb_size
macroblock size
Definition: ivi.h:158
IVIMbInfo * ref_mbs
ptr to the macroblock descriptors of the reference tile
Definition: ivi.h:137
int xpos
Definition: ivi.h:128
IVIHuffTab blk_vlc
current block table descriptor
Definition: ivi.h:239
void ff_ivi_inverse_slant_4x4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
two-dimensional inverse slant 4x4 transform
Definition: ivi_dsp.c:576
int16_t xpos
Definition: ivi.h:111
int band_num
band number
Definition: ivi.h:146
InvTransformPtr * inv_trans
Definition: indeo4.c:42
common internal api header.
int transform_size
Definition: ivi.h:178
static int is_nonnull_frame(IVI45DecContext *ctx)
Definition: indeo4.c:646
void ff_ivi_inverse_slant_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
two-dimensional inverse slant 8x8 transform
Definition: ivi_dsp.c:536
static int decode_mb_info(IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx)
Decode information (block type, cbp, quant delta, motion vector) for all macroblocks in the current t...
Definition: indeo4.c:456
const uint8_t * scan
ptr to the scan pattern
Definition: ivi.h:166
void * priv_data
Definition: avcodec.h:1787
int width
Definition: ivi.h:130
static av_cold int decode_init(AVCodecContext *avctx)
Definition: indeo4.c:652
int checksum_present
Definition: ivi.h:182
uint8_t has_transp
transparency mode status: 1 - enabled
Definition: ivi.h:253
VLC_TYPE(* table)[2]
code, bits
Definition: vlc.h:28
static const uint8_t * align_get_bits(GetBitContext *s)
Definition: get_bits.h:464
int16_t ypos
Definition: ivi.h:112
int prev_frame_type
frame type of the previous frame
Definition: ivi.h:219
void ff_ivi_row_slant4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
inverse 1D row slant transform
Definition: ivi_dsp.c:708
information for Indeo macroblock (16x16, 8x8 or 4x4)
Definition: ivi.h:110
IVIHuffTab blk_vlc
vlc table for decoding block data
Definition: ivi.h:169
int scan_size
size of the scantable
Definition: ivi.h:167
av_cold void ff_ivi_init_static_vlc(void)
Initialize static codes used for macroblock and block decoding.
Definition: ivi.c:179
const uint8_t * intra_scale
quantization coefficient for intra blocks
Definition: ivi.h:186
uint8_t uses_fullpel
Definition: ivi.h:256
#define FFSWAP(type, a, b)
Definition: common.h:99
uint32_t buf_offs
address in the output buffer for this mb
Definition: ivi.h:113
int b_ref_buf
second reference frame buffer index
Definition: ivi.h:236
information for Indeo wavelet band
Definition: ivi.h:144
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:1000
uint8_t rvmap_sel
Definition: ivi.h:241
AVCodec ff_indeo4_decoder
Definition: indeo4.c:688
int frame_type
Definition: ivi.h:218