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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 "libavutil/imgutils.h"
34 #include "indeo4data.h"
35 #include "internal.h"
36 #include "ivi.h"
37 #include "ivi_dsp.h"
38 
39 #define IVI4_PIC_SIZE_ESC 7
40 
41 
42 static const struct {
46 } transforms[18] = {
54  { NULL, NULL, 0 }, /* inverse DCT 8x8 */
55  { NULL, NULL, 0 }, /* inverse DCT 8x1 */
56  { NULL, NULL, 0 }, /* inverse DCT 1x8 */
59  { NULL, NULL, 0 }, /* no transform 4x4 */
64  { NULL, NULL, 0 }, /* inverse DCT 4x4 */
65 };
66 
67 /**
68  * Decode subdivision of a plane.
69  * This is a simplified version that checks for two supported subdivisions:
70  * - 1 wavelet band per plane, size factor 1:1, code pattern: 3
71  * - 4 wavelet bands per plane, size factor 1:4, code pattern: 2,3,3,3,3
72  * Anything else is either unsupported or corrupt.
73  *
74  * @param[in,out] gb the GetBit context
75  * @return number of wavelet bands or 0 on error
76  */
78 {
79  int i;
80 
81  switch (get_bits(gb, 2)) {
82  case 3:
83  return 1;
84  case 2:
85  for (i = 0; i < 4; i++)
86  if (get_bits(gb, 2) != 3)
87  return 0;
88  return 4;
89  default:
90  return 0;
91  }
92 }
93 
94 static inline int scale_tile_size(int def_size, int size_factor)
95 {
96  return size_factor == 15 ? def_size : (size_factor + 1) << 5;
97 }
98 
99 /**
100  * Decode Indeo 4 picture header.
101  *
102  * @param[in,out] ctx pointer to the decoder context
103  * @param[in] avctx pointer to the AVCodecContext
104  * @return result code: 0 = OK, negative number = error
105  */
107 {
108  int pic_size_indx, i, p;
109  IVIPicConfig pic_conf;
110 
111  if (get_bits(&ctx->gb, 18) != 0x3FFF8) {
112  av_log(avctx, AV_LOG_ERROR, "Invalid picture start code!\n");
113  return AVERROR_INVALIDDATA;
114  }
115 
116  ctx->prev_frame_type = ctx->frame_type;
117  ctx->frame_type = get_bits(&ctx->gb, 3);
118  if (ctx->frame_type == 7) {
119  av_log(avctx, AV_LOG_ERROR, "Invalid frame type: %d\n", ctx->frame_type);
120  return AVERROR_INVALIDDATA;
121  }
122 
123  if (ctx->frame_type == IVI4_FRAMETYPE_BIDIR)
124  ctx->has_b_frames = 1;
125 
126  ctx->has_transp = get_bits1(&ctx->gb);
127 
128  /* unknown bit: Mac decoder ignores this bit, XANIM returns error */
129  if (get_bits1(&ctx->gb)) {
130  av_log(avctx, AV_LOG_ERROR, "Sync bit is set!\n");
131  return AVERROR_INVALIDDATA;
132  }
133 
134  ctx->data_size = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 24) : 0;
135 
136  /* null frames don't contain anything else so we just return */
138  ff_dlog(avctx, "Null frame encountered!\n");
139  return 0;
140  }
141 
142  /* Check key lock status. If enabled - ignore lock word. */
143  /* Usually we have to prompt the user for the password, but */
144  /* we don't do that because Indeo 4 videos can be decoded anyway */
145  if (get_bits1(&ctx->gb)) {
146  skip_bits_long(&ctx->gb, 32);
147  ff_dlog(avctx, "Password-protected clip!\n");
148  }
149 
150  pic_size_indx = get_bits(&ctx->gb, 3);
151  if (pic_size_indx == IVI4_PIC_SIZE_ESC) {
152  pic_conf.pic_height = get_bits(&ctx->gb, 16);
153  pic_conf.pic_width = get_bits(&ctx->gb, 16);
154  } else {
155  pic_conf.pic_height = ivi4_common_pic_sizes[pic_size_indx * 2 + 1];
156  pic_conf.pic_width = ivi4_common_pic_sizes[pic_size_indx * 2 ];
157  }
158 
159  /* Decode tile dimensions. */
160  ctx->uses_tiling = get_bits1(&ctx->gb);
161  if (ctx->uses_tiling) {
162  pic_conf.tile_height = scale_tile_size(pic_conf.pic_height, get_bits(&ctx->gb, 4));
163  pic_conf.tile_width = scale_tile_size(pic_conf.pic_width, get_bits(&ctx->gb, 4));
164  } else {
165  pic_conf.tile_height = pic_conf.pic_height;
166  pic_conf.tile_width = pic_conf.pic_width;
167  }
168 
169  /* Decode chroma subsampling. We support only 4:4 aka YVU9. */
170  if (get_bits(&ctx->gb, 2)) {
171  av_log(avctx, AV_LOG_ERROR, "Only YVU9 picture format is supported!\n");
172  return AVERROR_INVALIDDATA;
173  }
174  pic_conf.chroma_height = (pic_conf.pic_height + 3) >> 2;
175  pic_conf.chroma_width = (pic_conf.pic_width + 3) >> 2;
176 
177  /* decode subdivision of the planes */
178  pic_conf.luma_bands = decode_plane_subdivision(&ctx->gb);
179  pic_conf.chroma_bands = 0;
180  if (pic_conf.luma_bands)
181  pic_conf.chroma_bands = decode_plane_subdivision(&ctx->gb);
182 
183  if (av_image_check_size2(pic_conf.pic_width, pic_conf.pic_height, avctx->max_pixels, AV_PIX_FMT_YUV410P, 0, avctx) < 0) {
184  av_log(avctx, AV_LOG_ERROR, "picture dimensions %d %d cannot be decoded\n",
185  pic_conf.pic_width, pic_conf.pic_height);
186  return AVERROR_INVALIDDATA;
187  }
188 
189  ctx->is_scalable = pic_conf.luma_bands != 1 || pic_conf.chroma_bands != 1;
190  if (ctx->is_scalable && (pic_conf.luma_bands != 4 || pic_conf.chroma_bands != 1)) {
191  av_log(avctx, AV_LOG_ERROR, "Scalability: unsupported subdivision! Luma bands: %d, chroma bands: %d\n",
192  pic_conf.luma_bands, pic_conf.chroma_bands);
193  return AVERROR_INVALIDDATA;
194  }
195 
196  /* check if picture layout was changed and reallocate buffers */
197  if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf)) {
198  if (ff_ivi_init_planes(avctx, ctx->planes, &pic_conf, 1)) {
199  av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
200  ctx->pic_conf.luma_bands = 0;
201  return AVERROR(ENOMEM);
202  }
203 
204  ctx->pic_conf = pic_conf;
205 
206  /* set default macroblock/block dimensions */
207  for (p = 0; p <= 2; p++) {
208  for (i = 0; i < (!p ? pic_conf.luma_bands : pic_conf.chroma_bands); i++) {
209  ctx->planes[p].bands[i].mb_size = !p ? (!ctx->is_scalable ? 16 : 8) : 4;
210  ctx->planes[p].bands[i].blk_size = !p ? 8 : 4;
211  }
212  }
213 
215  ctx->pic_conf.tile_height)) {
216  av_log(avctx, AV_LOG_ERROR,
217  "Couldn't reallocate internal structures!\n");
218  return AVERROR(ENOMEM);
219  }
220  }
221 
222  ctx->frame_num = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 20) : 0;
223 
224  /* skip decTimeEst field if present */
225  if (get_bits1(&ctx->gb))
226  skip_bits(&ctx->gb, 8);
227 
228  /* decode macroblock and block huffman codebooks */
229  if (ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_MB_HUFF, &ctx->mb_vlc, avctx) ||
230  ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_BLK_HUFF, &ctx->blk_vlc, avctx))
231  return AVERROR_INVALIDDATA;
232 
233  ctx->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
234 
235  ctx->in_imf = get_bits1(&ctx->gb);
236  ctx->in_q = get_bits1(&ctx->gb);
237 
238  ctx->pic_glob_quant = get_bits(&ctx->gb, 5);
239 
240  /* TODO: ignore this parameter if unused */
241  ctx->unknown1 = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 0;
242 
243  ctx->checksum = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 16) : 0;
244 
245  /* skip picture header extension if any */
246  while (get_bits1(&ctx->gb)) {
247  ff_dlog(avctx, "Pic hdr extension encountered!\n");
248  if (get_bits_left(&ctx->gb) < 10)
249  return AVERROR_INVALIDDATA;
250  skip_bits(&ctx->gb, 8);
251  }
252 
253  if (get_bits1(&ctx->gb)) {
254  av_log(avctx, AV_LOG_ERROR, "Bad blocks bits encountered!\n");
255  }
256 
257  align_get_bits(&ctx->gb);
258 
259  return 0;
260 }
261 
262 
263 /**
264  * Decode Indeo 4 band header.
265  *
266  * @param[in,out] ctx pointer to the decoder context
267  * @param[in,out] band pointer to the band descriptor
268  * @param[in] avctx pointer to the AVCodecContext
269  * @return result code: 0 = OK, negative number = error
270  */
272  AVCodecContext *avctx)
273 {
274  int plane, band_num, indx, transform_id, scan_indx;
275  int i;
276  int quant_mat;
277  IVIBandDesc temp_band, *band = &temp_band;
278  memcpy(&temp_band, arg_band, sizeof(temp_band));
279 
280  plane = get_bits(&ctx->gb, 2);
281  band_num = get_bits(&ctx->gb, 4);
282  if (band->plane != plane || band->band_num != band_num) {
283  av_log(avctx, AV_LOG_ERROR, "Invalid band header sequence!\n");
284  return AVERROR_INVALIDDATA;
285  }
286 
287  band->is_empty = get_bits1(&ctx->gb);
288  if (!band->is_empty) {
289  int old_blk_size = band->blk_size;
290  /* skip header size
291  * If header size is not given, header size is 4 bytes. */
292  if (get_bits1(&ctx->gb))
293  skip_bits(&ctx->gb, 16);
294 
295  band->is_halfpel = get_bits(&ctx->gb, 2);
296  if (band->is_halfpel >= 2) {
297  av_log(avctx, AV_LOG_ERROR, "Invalid/unsupported mv resolution: %d!\n",
298  band->is_halfpel);
299  return AVERROR_INVALIDDATA;
300  }
301  if (!band->is_halfpel)
302  ctx->uses_fullpel = 1;
303 
304  band->checksum_present = get_bits1(&ctx->gb);
305  if (band->checksum_present)
306  band->checksum = get_bits(&ctx->gb, 16);
307 
308  indx = get_bits(&ctx->gb, 2);
309  if (indx == 3) {
310  av_log(avctx, AV_LOG_ERROR, "Invalid block size!\n");
311  return AVERROR_INVALIDDATA;
312  }
313  band->mb_size = 16 >> indx;
314  band->blk_size = 8 >> (indx >> 1);
315 
316  band->inherit_mv = get_bits1(&ctx->gb);
317  band->inherit_qdelta = get_bits1(&ctx->gb);
318 
319  band->glob_quant = get_bits(&ctx->gb, 5);
320 
321  if (!get_bits1(&ctx->gb) || ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
322  transform_id = get_bits(&ctx->gb, 5);
323  if (transform_id >= FF_ARRAY_ELEMS(transforms) ||
324  !transforms[transform_id].inv_trans) {
325  avpriv_request_sample(avctx, "Transform %d", transform_id);
326  return AVERROR_PATCHWELCOME;
327  }
328  if ((transform_id >= 7 && transform_id <= 9) ||
329  transform_id == 17) {
330  avpriv_request_sample(avctx, "DCT transform");
331  return AVERROR_PATCHWELCOME;
332  }
333 
334  if (transform_id < 10 && band->blk_size < 8) {
335  av_log(avctx, AV_LOG_ERROR, "wrong transform size!\n");
336  return AVERROR_INVALIDDATA;
337  }
338  if ((transform_id >= 0 && transform_id <= 2) || transform_id == 10)
339  ctx->uses_haar = 1;
340 
341  band->inv_transform = transforms[transform_id].inv_trans;
342  band->dc_transform = transforms[transform_id].dc_trans;
343  band->is_2d_trans = transforms[transform_id].is_2d_trans;
344 
345  if (transform_id < 10)
346  band->transform_size = 8;
347  else
348  band->transform_size = 4;
349 
350  if (band->blk_size != band->transform_size) {
351  av_log(avctx, AV_LOG_ERROR, "transform and block size mismatch (%d != %d)\n", band->transform_size, band->blk_size);
352  return AVERROR_INVALIDDATA;
353  }
354 
355  scan_indx = get_bits(&ctx->gb, 4);
356  if (scan_indx == 15) {
357  av_log(avctx, AV_LOG_ERROR, "Custom scan pattern encountered!\n");
358  return AVERROR_INVALIDDATA;
359  }
360  if (scan_indx > 4 && scan_indx < 10) {
361  if (band->blk_size != 4) {
362  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
363  return AVERROR_INVALIDDATA;
364  }
365  } else if (band->blk_size != 8) {
366  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
367  return AVERROR_INVALIDDATA;
368  }
369 
370  band->scan = scan_index_to_tab[scan_indx];
371  band->scan_size = band->blk_size;
372 
373  quant_mat = get_bits(&ctx->gb, 5);
374  if (quant_mat == 31) {
375  av_log(avctx, AV_LOG_ERROR, "Custom quant matrix encountered!\n");
376  return AVERROR_INVALIDDATA;
377  }
378  if (quant_mat >= FF_ARRAY_ELEMS(quant_index_to_tab)) {
379  avpriv_request_sample(avctx, "Quantization matrix %d",
380  quant_mat);
381  return AVERROR_INVALIDDATA;
382  }
383  band->quant_mat = quant_mat;
384  } else {
385  if (old_blk_size != band->blk_size) {
386  av_log(avctx, AV_LOG_ERROR,
387  "The band block size does not match the configuration "
388  "inherited\n");
389  return AVERROR_INVALIDDATA;
390  }
391  }
392  if (quant_index_to_tab[band->quant_mat] > 4 && band->blk_size == 4) {
393  av_log(avctx, AV_LOG_ERROR, "Invalid quant matrix for 4x4 block encountered!\n");
394  band->quant_mat = 0;
395  return AVERROR_INVALIDDATA;
396  }
397  if (band->scan_size != band->blk_size) {
398  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
399  return AVERROR_INVALIDDATA;
400  }
401  if (band->transform_size == 8 && band->blk_size < 8) {
402  av_log(avctx, AV_LOG_ERROR, "mismatching transform_size!\n");
403  return AVERROR_INVALIDDATA;
404  }
405 
406  /* decode block huffman codebook */
407  if (!get_bits1(&ctx->gb))
408  arg_band->blk_vlc.tab = ctx->blk_vlc.tab;
409  else
410  if (ff_ivi_dec_huff_desc(&ctx->gb, 1, IVI_BLK_HUFF,
411  &arg_band->blk_vlc, avctx))
412  return AVERROR_INVALIDDATA;
413 
414  /* select appropriate rvmap table for this band */
415  band->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
416 
417  /* decode rvmap probability corrections if any */
418  band->num_corr = 0; /* there is no corrections */
419  if (get_bits1(&ctx->gb)) {
420  band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */
421  if (band->num_corr > 61) {
422  av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n",
423  band->num_corr);
424  return AVERROR_INVALIDDATA;
425  }
426 
427  /* read correction pairs */
428  for (i = 0; i < band->num_corr * 2; i++)
429  band->corr[i] = get_bits(&ctx->gb, 8);
430  }
431  }
432 
433  if (band->blk_size == 8) {
435  band->inter_base = &ivi4_quant_8x8_inter[quant_index_to_tab[band->quant_mat]][0];
436  } else {
438  band->inter_base = &ivi4_quant_4x4_inter[quant_index_to_tab[band->quant_mat]][0];
439  }
440 
441  /* Indeo 4 doesn't use scale tables */
442  band->intra_scale = NULL;
443  band->inter_scale = NULL;
444 
445  align_get_bits(&ctx->gb);
446 
447  if (!band->scan) {
448  av_log(avctx, AV_LOG_ERROR, "band->scan not set\n");
449  return AVERROR_INVALIDDATA;
450  }
451 
452  band->blk_vlc = arg_band->blk_vlc;
453  memcpy(arg_band, band, sizeof(*arg_band));
454 
455  return 0;
456 }
457 
458 
459 /**
460  * Decode information (block type, cbp, quant delta, motion vector)
461  * for all macroblocks in the current tile.
462  *
463  * @param[in,out] ctx pointer to the decoder context
464  * @param[in,out] band pointer to the band descriptor
465  * @param[in,out] tile pointer to the tile descriptor
466  * @param[in] avctx pointer to the AVCodecContext
467  * @return result code: 0 = OK, negative number = error
468  */
470  IVITile *tile, AVCodecContext *avctx)
471 {
472  int x, y, mv_x, mv_y, mv_delta, offs, mb_offset, blks_per_mb,
473  mv_scale, mb_type_bits, s;
474  IVIMbInfo *mb, *ref_mb;
475  int row_offset = band->mb_size * band->pitch;
476 
477  mb = tile->mbs;
478  ref_mb = tile->ref_mbs;
479  offs = tile->ypos * band->pitch + tile->xpos;
480 
481  blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
482  mb_type_bits = ctx->frame_type == IVI4_FRAMETYPE_BIDIR ? 2 : 1;
483 
484  /* scale factor for motion vectors */
485  mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
486  mv_x = mv_y = 0;
487 
488  if (((tile->width + band->mb_size-1)/band->mb_size) * ((tile->height + band->mb_size-1)/band->mb_size) != tile->num_MBs) {
489  av_log(avctx, AV_LOG_ERROR, "num_MBs mismatch %d %d %d %d\n", tile->width, tile->height, band->mb_size, tile->num_MBs);
490  return -1;
491  }
492 
493  for (y = tile->ypos; y < tile->ypos + tile->height; y += band->mb_size) {
494  mb_offset = offs;
495 
496  for (x = tile->xpos; x < tile->xpos + tile->width; x += band->mb_size) {
497  mb->xpos = x;
498  mb->ypos = y;
499  mb->buf_offs = mb_offset;
500  mb->b_mv_x =
501  mb->b_mv_y = 0;
502 
503  if (get_bits_left(&ctx->gb) < 1) {
504  av_log(avctx, AV_LOG_ERROR, "Insufficient input for mb info\n");
505  return AVERROR_INVALIDDATA;
506  }
507 
508  if (get_bits1(&ctx->gb)) {
509  if (ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
510  av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
511  return AVERROR_INVALIDDATA;
512  }
513  mb->type = 1; /* empty macroblocks are always INTER */
514  mb->cbp = 0; /* all blocks are empty */
515 
516  mb->q_delta = 0;
517  if (!band->plane && !band->band_num && ctx->in_q) {
518  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
519  IVI_VLC_BITS, 1);
520  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
521  }
522 
523  mb->mv_x = mb->mv_y = 0; /* no motion vector coded */
524  if (band->inherit_mv && ref_mb) {
525  /* motion vector inheritance */
526  if (mv_scale) {
527  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
528  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
529  } else {
530  mb->mv_x = ref_mb->mv_x;
531  mb->mv_y = ref_mb->mv_y;
532  }
533  }
534  } else {
535  if (band->inherit_mv) {
536  /* copy mb_type from corresponding reference mb */
537  if (!ref_mb) {
538  av_log(avctx, AV_LOG_ERROR, "ref_mb unavailable\n");
539  return AVERROR_INVALIDDATA;
540  }
541  mb->type = ref_mb->type;
542  } else if (ctx->frame_type == IVI4_FRAMETYPE_INTRA ||
544  mb->type = 0; /* mb_type is always INTRA for intra-frames */
545  } else {
546  mb->type = get_bits(&ctx->gb, mb_type_bits);
547  }
548 
549  mb->cbp = get_bits(&ctx->gb, blks_per_mb);
550 
551  mb->q_delta = 0;
552  if (band->inherit_qdelta) {
553  if (ref_mb) mb->q_delta = ref_mb->q_delta;
554  } else if (mb->cbp || (!band->plane && !band->band_num &&
555  ctx->in_q)) {
556  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
557  IVI_VLC_BITS, 1);
558  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
559  }
560 
561  if (!mb->type) {
562  mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */
563  } else {
564  if (band->inherit_mv) {
565  if (ref_mb)
566  /* motion vector inheritance */
567  if (mv_scale) {
568  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
569  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
570  } else {
571  mb->mv_x = ref_mb->mv_x;
572  mb->mv_y = ref_mb->mv_y;
573  }
574  } else {
575  /* decode motion vector deltas */
576  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
577  IVI_VLC_BITS, 1);
578  mv_y += IVI_TOSIGNED(mv_delta);
579  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
580  IVI_VLC_BITS, 1);
581  mv_x += IVI_TOSIGNED(mv_delta);
582  mb->mv_x = mv_x;
583  mb->mv_y = mv_y;
584  if (mb->type == 3) {
585  mv_delta = get_vlc2(&ctx->gb,
586  ctx->mb_vlc.tab->table,
587  IVI_VLC_BITS, 1);
588  mv_y += IVI_TOSIGNED(mv_delta);
589  mv_delta = get_vlc2(&ctx->gb,
590  ctx->mb_vlc.tab->table,
591  IVI_VLC_BITS, 1);
592  mv_x += IVI_TOSIGNED(mv_delta);
593  mb->b_mv_x = -mv_x;
594  mb->b_mv_y = -mv_y;
595  }
596  }
597  if (mb->type == 2) {
598  mb->b_mv_x = -mb->mv_x;
599  mb->b_mv_y = -mb->mv_y;
600  mb->mv_x = 0;
601  mb->mv_y = 0;
602  }
603  }
604  }
605 
606  s= band->is_halfpel;
607  if (mb->type)
608  if ( x + (mb->mv_x >>s) + (y+ (mb->mv_y >>s))*band->pitch < 0 ||
609  x + ((mb->mv_x+s)>>s) + band->mb_size - 1
610  + (y+band->mb_size - 1 +((mb->mv_y+s)>>s))*band->pitch > band->bufsize -1) {
611  av_log(avctx, AV_LOG_ERROR, "motion vector %d %d outside reference\n", x*s + mb->mv_x, y*s + mb->mv_y);
612  return AVERROR_INVALIDDATA;
613  }
614 
615  mb++;
616  if (ref_mb)
617  ref_mb++;
618  mb_offset += band->mb_size;
619  }
620 
621  offs += row_offset;
622  }
623 
624  align_get_bits(&ctx->gb);
625 
626  return 0;
627 }
628 
629 
630 /**
631  * Rearrange decoding and reference buffers.
632  *
633  * @param[in,out] ctx pointer to the decoder context
634  */
636 {
637  int is_prev_ref = 0, is_ref = 0;
638 
639  switch (ctx->prev_frame_type) {
643  is_prev_ref = 1;
644  break;
645  }
646 
647  switch (ctx->frame_type) {
651  is_ref = 1;
652  break;
653  }
654 
655  if (is_prev_ref && is_ref) {
656  FFSWAP(int, ctx->dst_buf, ctx->ref_buf);
657  } else if (is_prev_ref) {
658  FFSWAP(int, ctx->ref_buf, ctx->b_ref_buf);
659  FFSWAP(int, ctx->dst_buf, ctx->ref_buf);
660  }
661 }
662 
663 
665 {
667 }
668 
669 
671 {
672  IVI45DecContext *ctx = avctx->priv_data;
673 
675 
676  /* copy rvmap tables in our context so we can apply changes to them */
677  memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
678 
679  /* Force allocation of the internal buffers */
680  /* during picture header decoding. */
681  ctx->pic_conf.pic_width = 0;
682  ctx->pic_conf.pic_height = 0;
683 
684  avctx->pix_fmt = AV_PIX_FMT_YUV410P;
685 
691 
692  ctx->is_indeo4 = 1;
693  ctx->show_indeo4_info = 1;
694 
695  ctx->dst_buf = 0;
696  ctx->ref_buf = 1;
697  ctx->b_ref_buf = 3; /* buffer 2 is used for scalability mode */
698  ctx->p_frame = av_frame_alloc();
699  if (!ctx->p_frame)
700  return AVERROR(ENOMEM);
701 
702  return 0;
703 }
704 
705 
707  .name = "indeo4",
708  .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 4"),
709  .type = AVMEDIA_TYPE_VIDEO,
710  .id = AV_CODEC_ID_INDEO4,
711  .priv_data_size = sizeof(IVI45DecContext),
712  .init = decode_init,
713  .close = ff_ivi_decode_close,
715  .capabilities = AV_CODEC_CAP_DR1,
716 };
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:94
#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:39
bidirectional frame
Definition: ivi.h:43
Huffman table is used for coding macroblocks.
Definition: ivi.h:75
static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
Decode Indeo 4 picture header.
Definition: indeo4.c:106
misc image utilities
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:381
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:77
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:293
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:1208
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:1062
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:1742
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:3423
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
intra frame with slightly different bitstream coding
Definition: ivi.h:41
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
#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
#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:814
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:44
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:3430
int64_t max_pixels
The number of pixels per image to maximally accept.
Definition: avcodec.h:3242
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:1259
int is_scalable
Definition: ivi.h:221
int is_2d_trans
Definition: indeo4.c:45
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:635
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:762
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
non-droppable P-frame
Definition: ivi.h:42
#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
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
empty frame with no data
Definition: ivi.h:45
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:1532
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:487
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
uint8_t in_imf
Definition: ivi.h:242
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:460
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:43
common internal api header.
int transform_size
Definition: ivi.h:178
static int is_nonnull_frame(IVI45DecContext *ctx)
Definition: indeo4.c:664
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
int av_image_check_size2(unsigned int w, unsigned int h, int64_t max_pixels, enum AVPixelFormat pix_fmt, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of a plane of an image with...
Definition: imgutils.c:253
static const struct @97 transforms[18]
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:469
const uint8_t * scan
ptr to the scan pattern
Definition: ivi.h:166
void * priv_data
Definition: avcodec.h:1559
int width
Definition: ivi.h:130
static av_cold int decode_init(AVCodecContext *avctx)
Definition: indeo4.c:670
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:658
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:271
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:967
uint8_t rvmap_sel
Definition: ivi.h:241
AVCodec ff_indeo4_decoder
Definition: indeo4.c:706
int frame_type
Definition: ivi.h:218