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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(avctx, 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  IVIBandDesc temp_band, *band = &temp_band;
270  memcpy(&temp_band, arg_band, sizeof(temp_band));
271 
272  plane = get_bits(&ctx->gb, 2);
273  band_num = get_bits(&ctx->gb, 4);
274  if (band->plane != plane || band->band_num != band_num) {
275  av_log(avctx, AV_LOG_ERROR, "Invalid band header sequence!\n");
276  return AVERROR_INVALIDDATA;
277  }
278 
279  band->is_empty = get_bits1(&ctx->gb);
280  if (!band->is_empty) {
281  int old_blk_size = band->blk_size;
282  /* skip header size
283  * If header size is not given, header size is 4 bytes. */
284  if (get_bits1(&ctx->gb))
285  skip_bits(&ctx->gb, 16);
286 
287  band->is_halfpel = get_bits(&ctx->gb, 2);
288  if (band->is_halfpel >= 2) {
289  av_log(avctx, AV_LOG_ERROR, "Invalid/unsupported mv resolution: %d!\n",
290  band->is_halfpel);
291  return AVERROR_INVALIDDATA;
292  }
293  if (!band->is_halfpel)
294  ctx->uses_fullpel = 1;
295 
296  band->checksum_present = get_bits1(&ctx->gb);
297  if (band->checksum_present)
298  band->checksum = get_bits(&ctx->gb, 16);
299 
300  indx = get_bits(&ctx->gb, 2);
301  if (indx == 3) {
302  av_log(avctx, AV_LOG_ERROR, "Invalid block size!\n");
303  return AVERROR_INVALIDDATA;
304  }
305  band->mb_size = 16 >> indx;
306  band->blk_size = 8 >> (indx >> 1);
307 
308  band->inherit_mv = get_bits1(&ctx->gb);
309  band->inherit_qdelta = get_bits1(&ctx->gb);
310 
311  band->glob_quant = get_bits(&ctx->gb, 5);
312 
313  if (!get_bits1(&ctx->gb) || ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
314  transform_id = get_bits(&ctx->gb, 5);
315  if (transform_id >= FF_ARRAY_ELEMS(transforms) ||
316  !transforms[transform_id].inv_trans) {
317  avpriv_request_sample(avctx, "Transform %d", transform_id);
318  return AVERROR_PATCHWELCOME;
319  }
320  if ((transform_id >= 7 && transform_id <= 9) ||
321  transform_id == 17) {
322  avpriv_request_sample(avctx, "DCT transform");
323  return AVERROR_PATCHWELCOME;
324  }
325 
326  if (transform_id < 10 && band->blk_size < 8) {
327  av_log(avctx, AV_LOG_ERROR, "wrong transform size!\n");
328  return AVERROR_INVALIDDATA;
329  }
330  if ((transform_id >= 0 && transform_id <= 2) || transform_id == 10)
331  ctx->uses_haar = 1;
332 
333  band->inv_transform = transforms[transform_id].inv_trans;
334  band->dc_transform = transforms[transform_id].dc_trans;
335  band->is_2d_trans = transforms[transform_id].is_2d_trans;
336 
337  if (transform_id < 10)
338  band->transform_size = 8;
339  else
340  band->transform_size = 4;
341 
342  if (band->blk_size != band->transform_size) {
343  av_log(avctx, AV_LOG_ERROR, "transform and block size mismatch (%d != %d)\n", band->transform_size, band->blk_size);
344  return AVERROR_INVALIDDATA;
345  }
346 
347  scan_indx = get_bits(&ctx->gb, 4);
348  if (scan_indx == 15) {
349  av_log(avctx, AV_LOG_ERROR, "Custom scan pattern encountered!\n");
350  return AVERROR_INVALIDDATA;
351  }
352  if (scan_indx > 4 && scan_indx < 10) {
353  if (band->blk_size != 4) {
354  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
355  return AVERROR_INVALIDDATA;
356  }
357  } else if (band->blk_size != 8) {
358  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
359  return AVERROR_INVALIDDATA;
360  }
361 
362  band->scan = scan_index_to_tab[scan_indx];
363  band->scan_size = band->blk_size;
364 
365  quant_mat = get_bits(&ctx->gb, 5);
366  if (quant_mat == 31) {
367  av_log(avctx, AV_LOG_ERROR, "Custom quant matrix encountered!\n");
368  return AVERROR_INVALIDDATA;
369  }
370  if (quant_mat >= FF_ARRAY_ELEMS(quant_index_to_tab)) {
371  avpriv_request_sample(avctx, "Quantization matrix %d",
372  quant_mat);
373  return AVERROR_INVALIDDATA;
374  }
375  band->quant_mat = quant_mat;
376  } else {
377  if (old_blk_size != band->blk_size) {
378  av_log(avctx, AV_LOG_ERROR,
379  "The band block size does not match the configuration "
380  "inherited\n");
381  return AVERROR_INVALIDDATA;
382  }
383  }
384  if (quant_index_to_tab[band->quant_mat] > 4 && band->blk_size == 4) {
385  av_log(avctx, AV_LOG_ERROR, "Invalid quant matrix for 4x4 block encountered!\n");
386  band->quant_mat = 0;
387  return AVERROR_INVALIDDATA;
388  }
389  if (band->scan_size != band->blk_size) {
390  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
391  return AVERROR_INVALIDDATA;
392  }
393  if (band->transform_size == 8 && band->blk_size < 8) {
394  av_log(avctx, AV_LOG_ERROR, "mismatching transform_size!\n");
395  return AVERROR_INVALIDDATA;
396  }
397 
398  /* decode block huffman codebook */
399  if (!get_bits1(&ctx->gb))
400  arg_band->blk_vlc.tab = ctx->blk_vlc.tab;
401  else
402  if (ff_ivi_dec_huff_desc(&ctx->gb, 1, IVI_BLK_HUFF,
403  &arg_band->blk_vlc, avctx))
404  return AVERROR_INVALIDDATA;
405 
406  /* select appropriate rvmap table for this band */
407  band->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
408 
409  /* decode rvmap probability corrections if any */
410  band->num_corr = 0; /* there is no corrections */
411  if (get_bits1(&ctx->gb)) {
412  band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */
413  if (band->num_corr > 61) {
414  av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n",
415  band->num_corr);
416  return AVERROR_INVALIDDATA;
417  }
418 
419  /* read correction pairs */
420  for (i = 0; i < band->num_corr * 2; i++)
421  band->corr[i] = get_bits(&ctx->gb, 8);
422  }
423  }
424 
425  if (band->blk_size == 8) {
427  band->inter_base = &ivi4_quant_8x8_inter[quant_index_to_tab[band->quant_mat]][0];
428  } else {
430  band->inter_base = &ivi4_quant_4x4_inter[quant_index_to_tab[band->quant_mat]][0];
431  }
432 
433  /* Indeo 4 doesn't use scale tables */
434  band->intra_scale = NULL;
435  band->inter_scale = NULL;
436 
437  align_get_bits(&ctx->gb);
438 
439  if (!band->scan) {
440  av_log(avctx, AV_LOG_ERROR, "band->scan not set\n");
441  return AVERROR_INVALIDDATA;
442  }
443 
444  band->blk_vlc = arg_band->blk_vlc;
445  memcpy(arg_band, band, sizeof(*arg_band));
446 
447  return 0;
448 }
449 
450 
451 /**
452  * Decode information (block type, cbp, quant delta, motion vector)
453  * for all macroblocks in the current tile.
454  *
455  * @param[in,out] ctx pointer to the decoder context
456  * @param[in,out] band pointer to the band descriptor
457  * @param[in,out] tile pointer to the tile descriptor
458  * @param[in] avctx pointer to the AVCodecContext
459  * @return result code: 0 = OK, negative number = error
460  */
462  IVITile *tile, AVCodecContext *avctx)
463 {
464  int x, y, mv_x, mv_y, mv_delta, offs, mb_offset, blks_per_mb,
465  mv_scale, mb_type_bits, s;
466  IVIMbInfo *mb, *ref_mb;
467  int row_offset = band->mb_size * band->pitch;
468 
469  mb = tile->mbs;
470  ref_mb = tile->ref_mbs;
471  offs = tile->ypos * band->pitch + tile->xpos;
472 
473  blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
474  mb_type_bits = ctx->frame_type == IVI4_FRAMETYPE_BIDIR ? 2 : 1;
475 
476  /* scale factor for motion vectors */
477  mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
478  mv_x = mv_y = 0;
479 
480  if (((tile->width + band->mb_size-1)/band->mb_size) * ((tile->height + band->mb_size-1)/band->mb_size) != tile->num_MBs) {
481  av_log(avctx, AV_LOG_ERROR, "num_MBs mismatch %d %d %d %d\n", tile->width, tile->height, band->mb_size, tile->num_MBs);
482  return -1;
483  }
484 
485  for (y = tile->ypos; y < tile->ypos + tile->height; y += band->mb_size) {
486  mb_offset = offs;
487 
488  for (x = tile->xpos; x < tile->xpos + tile->width; x += band->mb_size) {
489  mb->xpos = x;
490  mb->ypos = y;
491  mb->buf_offs = mb_offset;
492  mb->b_mv_x =
493  mb->b_mv_y = 0;
494 
495  if (get_bits_left(&ctx->gb) < 1) {
496  av_log(avctx, AV_LOG_ERROR, "Insufficient input for mb info\n");
497  return AVERROR_INVALIDDATA;
498  }
499 
500  if (get_bits1(&ctx->gb)) {
501  if (ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
502  av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
503  return AVERROR_INVALIDDATA;
504  }
505  mb->type = 1; /* empty macroblocks are always INTER */
506  mb->cbp = 0; /* all blocks are empty */
507 
508  mb->q_delta = 0;
509  if (!band->plane && !band->band_num && ctx->in_q) {
510  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
511  IVI_VLC_BITS, 1);
512  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
513  }
514 
515  mb->mv_x = mb->mv_y = 0; /* no motion vector coded */
516  if (band->inherit_mv && ref_mb) {
517  /* motion vector inheritance */
518  if (mv_scale) {
519  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
520  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
521  } else {
522  mb->mv_x = ref_mb->mv_x;
523  mb->mv_y = ref_mb->mv_y;
524  }
525  }
526  } else {
527  if (band->inherit_mv) {
528  /* copy mb_type from corresponding reference mb */
529  if (!ref_mb) {
530  av_log(avctx, AV_LOG_ERROR, "ref_mb unavailable\n");
531  return AVERROR_INVALIDDATA;
532  }
533  mb->type = ref_mb->type;
534  } else if (ctx->frame_type == IVI4_FRAMETYPE_INTRA ||
536  mb->type = 0; /* mb_type is always INTRA for intra-frames */
537  } else {
538  mb->type = get_bits(&ctx->gb, mb_type_bits);
539  }
540 
541  mb->cbp = get_bits(&ctx->gb, blks_per_mb);
542 
543  mb->q_delta = 0;
544  if (band->inherit_qdelta) {
545  if (ref_mb) mb->q_delta = ref_mb->q_delta;
546  } else if (mb->cbp || (!band->plane && !band->band_num &&
547  ctx->in_q)) {
548  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
549  IVI_VLC_BITS, 1);
550  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
551  }
552 
553  if (!mb->type) {
554  mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */
555  } else {
556  if (band->inherit_mv) {
557  if (ref_mb)
558  /* motion vector inheritance */
559  if (mv_scale) {
560  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
561  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
562  } else {
563  mb->mv_x = ref_mb->mv_x;
564  mb->mv_y = ref_mb->mv_y;
565  }
566  } else {
567  /* decode motion vector deltas */
568  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
569  IVI_VLC_BITS, 1);
570  mv_y += IVI_TOSIGNED(mv_delta);
571  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
572  IVI_VLC_BITS, 1);
573  mv_x += IVI_TOSIGNED(mv_delta);
574  mb->mv_x = mv_x;
575  mb->mv_y = mv_y;
576  if (mb->type == 3) {
577  mv_delta = get_vlc2(&ctx->gb,
578  ctx->mb_vlc.tab->table,
579  IVI_VLC_BITS, 1);
580  mv_y += IVI_TOSIGNED(mv_delta);
581  mv_delta = get_vlc2(&ctx->gb,
582  ctx->mb_vlc.tab->table,
583  IVI_VLC_BITS, 1);
584  mv_x += IVI_TOSIGNED(mv_delta);
585  mb->b_mv_x = -mv_x;
586  mb->b_mv_y = -mv_y;
587  }
588  }
589  if (mb->type == 2) {
590  mb->b_mv_x = -mb->mv_x;
591  mb->b_mv_y = -mb->mv_y;
592  mb->mv_x = 0;
593  mb->mv_y = 0;
594  }
595  }
596  }
597 
598  s= band->is_halfpel;
599  if (mb->type)
600  if ( x + (mb->mv_x >>s) + (y+ (mb->mv_y >>s))*band->pitch < 0 ||
601  x + ((mb->mv_x+s)>>s) + band->mb_size - 1
602  + (y+band->mb_size - 1 +((mb->mv_y+s)>>s))*band->pitch > band->bufsize -1) {
603  av_log(avctx, AV_LOG_ERROR, "motion vector %d %d outside reference\n", x*s + mb->mv_x, y*s + mb->mv_y);
604  return AVERROR_INVALIDDATA;
605  }
606 
607  mb++;
608  if (ref_mb)
609  ref_mb++;
610  mb_offset += band->mb_size;
611  }
612 
613  offs += row_offset;
614  }
615 
616  align_get_bits(&ctx->gb);
617 
618  return 0;
619 }
620 
621 
622 /**
623  * Rearrange decoding and reference buffers.
624  *
625  * @param[in,out] ctx pointer to the decoder context
626  */
628 {
629  int is_prev_ref = 0, is_ref = 0;
630 
631  switch (ctx->prev_frame_type) {
635  is_prev_ref = 1;
636  break;
637  }
638 
639  switch (ctx->frame_type) {
643  is_ref = 1;
644  break;
645  }
646 
647  if (is_prev_ref && is_ref) {
648  FFSWAP(int, ctx->dst_buf, ctx->ref_buf);
649  } else if (is_prev_ref) {
650  FFSWAP(int, ctx->ref_buf, ctx->b_ref_buf);
651  FFSWAP(int, ctx->dst_buf, ctx->ref_buf);
652  }
653 }
654 
655 
657 {
659 }
660 
661 
663 {
664  IVI45DecContext *ctx = avctx->priv_data;
665 
667 
668  /* copy rvmap tables in our context so we can apply changes to them */
669  memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
670 
671  /* Force allocation of the internal buffers */
672  /* during picture header decoding. */
673  ctx->pic_conf.pic_width = 0;
674  ctx->pic_conf.pic_height = 0;
675 
676  avctx->pix_fmt = AV_PIX_FMT_YUV410P;
677 
683 
684  ctx->is_indeo4 = 1;
685  ctx->show_indeo4_info = 1;
686 
687  ctx->dst_buf = 0;
688  ctx->ref_buf = 1;
689  ctx->b_ref_buf = 3; /* buffer 2 is used for scalability mode */
690  ctx->p_frame = av_frame_alloc();
691  if (!ctx->p_frame)
692  return AVERROR(ENOMEM);
693 
694  return 0;
695 }
696 
697 
699  .name = "indeo4",
700  .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 4"),
701  .type = AVMEDIA_TYPE_VIDEO,
702  .id = AV_CODEC_ID_INDEO4,
703  .priv_data_size = sizeof(IVI45DecContext),
704  .init = decode_init,
705  .close = ff_ivi_decode_close,
707  .capabilities = AV_CODEC_CAP_DR1,
708 };
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
#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:269
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)
Skips the specified number of bits.
Definition: get_bits.h:212
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
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:1729
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:3410
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:189
static const struct @85 transforms[18]
#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
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
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
empty frame with no data
Definition: ivi.h:45
#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
IVIPlaneDesc planes[3]
color planes
Definition: ivi.h:230
#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:596
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
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
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:3417
static int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
compare some properties of two pictures
Definition: ivi.h:274
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
#define s(width, name)
Definition: cbs_vp9.c:257
static void switch_buffers(IVI45DecContext *ctx)
Rearrange decoding and reference buffers.
Definition: indeo4.c:627
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:563
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
bidirectional frame
Definition: ivi.h:43
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)
intra frame with slightly different bitstream coding
Definition: ivi.h:41
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
uint16_t tile_width
Definition: ivi.h:207
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
av_cold int ff_ivi_init_planes(AVCodecContext *avctx, IVIPlaneDesc *planes, const IVIPicConfig *cfg, int is_indeo4)
Initialize planes (prepares descriptors, allocates buffers etc).
Definition: ivi.c:305
main external API structure.
Definition: avcodec.h:1520
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:321
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:314
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:656
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:461
const uint8_t * scan
ptr to the scan pattern
Definition: ivi.h:166
void * priv_data
Definition: avcodec.h:1547
int width
Definition: ivi.h:130
static av_cold int decode_init(AVCodecContext *avctx)
Definition: indeo4.c:662
Huffman table is used for coding macroblocks.
Definition: ivi.h:75
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:472
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
static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *arg_band, AVCodecContext *avctx)
Decode Indeo 4 band header.
Definition: indeo4.c:263
non-droppable P-frame
Definition: ivi.h:42
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:961
uint8_t rvmap_sel
Definition: ivi.h:241
AVCodec ff_indeo4_decoder
Definition: indeo4.c:698
int frame_type
Definition: ivi.h:218