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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 "ivi.h"
34 #include "ivi_dsp.h"
35 #include "indeo4data.h"
36 #include "internal.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 IVI4_STREAM_ANALYSER
123  if (ctx->frame_type == IVI4_FRAMETYPE_BIDIR)
124  ctx->has_b_frames = 1;
125 #endif
126 
127  ctx->transp_status = get_bits1(&ctx->gb);
128 #if IVI4_STREAM_ANALYSER
129  if (ctx->transp_status) {
130  ctx->has_transp = 1;
131  }
132 #endif
133 
134  /* unknown bit: Mac decoder ignores this bit, XANIM returns error */
135  if (get_bits1(&ctx->gb)) {
136  av_log(avctx, AV_LOG_ERROR, "Sync bit is set!\n");
137  return AVERROR_INVALIDDATA;
138  }
139 
140  ctx->data_size = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 24) : 0;
141 
142  /* null frames don't contain anything else so we just return */
144  ff_dlog(avctx, "Null frame encountered!\n");
145  return 0;
146  }
147 
148  /* Check key lock status. If enabled - ignore lock word. */
149  /* Usually we have to prompt the user for the password, but */
150  /* we don't do that because Indeo 4 videos can be decoded anyway */
151  if (get_bits1(&ctx->gb)) {
152  skip_bits_long(&ctx->gb, 32);
153  ff_dlog(avctx, "Password-protected clip!\n");
154  }
155 
156  pic_size_indx = get_bits(&ctx->gb, 3);
157  if (pic_size_indx == IVI4_PIC_SIZE_ESC) {
158  pic_conf.pic_height = get_bits(&ctx->gb, 16);
159  pic_conf.pic_width = get_bits(&ctx->gb, 16);
160  } else {
161  pic_conf.pic_height = ivi4_common_pic_sizes[pic_size_indx * 2 + 1];
162  pic_conf.pic_width = ivi4_common_pic_sizes[pic_size_indx * 2 ];
163  }
164 
165  /* Decode tile dimensions. */
166  if (get_bits1(&ctx->gb)) {
167  pic_conf.tile_height = scale_tile_size(pic_conf.pic_height, get_bits(&ctx->gb, 4));
168  pic_conf.tile_width = scale_tile_size(pic_conf.pic_width, get_bits(&ctx->gb, 4));
169 #if IVI4_STREAM_ANALYSER
170  ctx->uses_tiling = 1;
171 #endif
172  } else {
173  pic_conf.tile_height = pic_conf.pic_height;
174  pic_conf.tile_width = pic_conf.pic_width;
175  }
176 
177  /* Decode chroma subsampling. We support only 4:4 aka YVU9. */
178  if (get_bits(&ctx->gb, 2)) {
179  av_log(avctx, AV_LOG_ERROR, "Only YVU9 picture format is supported!\n");
180  return AVERROR_INVALIDDATA;
181  }
182  pic_conf.chroma_height = (pic_conf.pic_height + 3) >> 2;
183  pic_conf.chroma_width = (pic_conf.pic_width + 3) >> 2;
184 
185  /* decode subdivision of the planes */
186  pic_conf.luma_bands = decode_plane_subdivision(&ctx->gb);
187  pic_conf.chroma_bands = 0;
188  if (pic_conf.luma_bands)
189  pic_conf.chroma_bands = decode_plane_subdivision(&ctx->gb);
190  ctx->is_scalable = pic_conf.luma_bands != 1 || pic_conf.chroma_bands != 1;
191  if (ctx->is_scalable && (pic_conf.luma_bands != 4 || pic_conf.chroma_bands != 1)) {
192  av_log(avctx, AV_LOG_ERROR, "Scalability: unsupported subdivision! Luma bands: %d, chroma bands: %d\n",
193  pic_conf.luma_bands, pic_conf.chroma_bands);
194  return AVERROR_INVALIDDATA;
195  }
196 
197  /* check if picture layout was changed and reallocate buffers */
198  if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf)) {
199  if (ff_ivi_init_planes(ctx->planes, &pic_conf, 1)) {
200  av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
201  ctx->pic_conf.luma_bands = 0;
202  return AVERROR(ENOMEM);
203  }
204 
205  ctx->pic_conf = pic_conf;
206 
207  /* set default macroblock/block dimensions */
208  for (p = 0; p <= 2; p++) {
209  for (i = 0; i < (!p ? pic_conf.luma_bands : pic_conf.chroma_bands); i++) {
210  ctx->planes[p].bands[i].mb_size = !p ? (!ctx->is_scalable ? 16 : 8) : 4;
211  ctx->planes[p].bands[i].blk_size = !p ? 8 : 4;
212  }
213  }
214 
216  ctx->pic_conf.tile_height)) {
217  av_log(avctx, AV_LOG_ERROR,
218  "Couldn't reallocate internal structures!\n");
219  return AVERROR(ENOMEM);
220  }
221  }
222 
223  ctx->frame_num = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 20) : 0;
224 
225  /* skip decTimeEst field if present */
226  if (get_bits1(&ctx->gb))
227  skip_bits(&ctx->gb, 8);
228 
229  /* decode macroblock and block huffman codebooks */
230  if (ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_MB_HUFF, &ctx->mb_vlc, avctx) ||
231  ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_BLK_HUFF, &ctx->blk_vlc, avctx))
232  return AVERROR_INVALIDDATA;
233 
234  ctx->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
235 
236  ctx->in_imf = get_bits1(&ctx->gb);
237  ctx->in_q = get_bits1(&ctx->gb);
238 
239  ctx->pic_glob_quant = get_bits(&ctx->gb, 5);
240 
241  /* TODO: ignore this parameter if unused */
242  ctx->unknown1 = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 0;
243 
244  ctx->checksum = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 16) : 0;
245 
246  /* skip picture header extension if any */
247  while (get_bits1(&ctx->gb)) {
248  ff_dlog(avctx, "Pic hdr extension encountered!\n");
249  skip_bits(&ctx->gb, 8);
250  }
251 
252  if (get_bits1(&ctx->gb)) {
253  av_log(avctx, AV_LOG_ERROR, "Bad blocks bits encountered!\n");
254  }
255 
256  align_get_bits(&ctx->gb);
257 
258  return 0;
259 }
260 
261 
262 /**
263  * Decode Indeo 4 band header.
264  *
265  * @param[in,out] ctx pointer to the decoder context
266  * @param[in,out] band pointer to the band descriptor
267  * @param[in] avctx pointer to the AVCodecContext
268  * @return result code: 0 = OK, negative number = error
269  */
271  AVCodecContext *avctx)
272 {
273  int plane, band_num, indx, transform_id, scan_indx;
274  int i;
275  int quant_mat;
276 
277  plane = get_bits(&ctx->gb, 2);
278  band_num = get_bits(&ctx->gb, 4);
279  if (band->plane != plane || band->band_num != band_num) {
280  av_log(avctx, AV_LOG_ERROR, "Invalid band header sequence!\n");
281  return AVERROR_INVALIDDATA;
282  }
283 
284  band->is_empty = get_bits1(&ctx->gb);
285  if (!band->is_empty) {
286  int old_blk_size = band->blk_size;
287  /* skip header size
288  * If header size is not given, header size is 4 bytes. */
289  if (get_bits1(&ctx->gb))
290  skip_bits(&ctx->gb, 16);
291 
292  band->is_halfpel = get_bits(&ctx->gb, 2);
293  if (band->is_halfpel >= 2) {
294  av_log(avctx, AV_LOG_ERROR, "Invalid/unsupported mv resolution: %d!\n",
295  band->is_halfpel);
296  return AVERROR_INVALIDDATA;
297  }
298 #if IVI4_STREAM_ANALYSER
299  if (!band->is_halfpel)
300  ctx->uses_fullpel = 1;
301 #endif
302 
303  band->checksum_present = get_bits1(&ctx->gb);
304  if (band->checksum_present)
305  band->checksum = get_bits(&ctx->gb, 16);
306 
307  indx = get_bits(&ctx->gb, 2);
308  if (indx == 3) {
309  av_log(avctx, AV_LOG_ERROR, "Invalid block size!\n");
310  return AVERROR_INVALIDDATA;
311  }
312  band->mb_size = 16 >> indx;
313  band->blk_size = 8 >> (indx >> 1);
314 
315  band->inherit_mv = get_bits1(&ctx->gb);
316  band->inherit_qdelta = get_bits1(&ctx->gb);
317 
318  band->glob_quant = get_bits(&ctx->gb, 5);
319 
320  if (!get_bits1(&ctx->gb) || ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
321  transform_id = get_bits(&ctx->gb, 5);
322  if (transform_id >= FF_ARRAY_ELEMS(transforms) ||
323  !transforms[transform_id].inv_trans) {
324  avpriv_request_sample(avctx, "Transform %d", transform_id);
325  return AVERROR_PATCHWELCOME;
326  }
327  if ((transform_id >= 7 && transform_id <= 9) ||
328  transform_id == 17) {
329  avpriv_request_sample(avctx, "DCT transform");
330  return AVERROR_PATCHWELCOME;
331  }
332 
333  if (transform_id < 10 && band->blk_size < 8) {
334  av_log(avctx, AV_LOG_ERROR, "wrong transform size!\n");
335  return AVERROR_INVALIDDATA;
336  }
337 #if IVI4_STREAM_ANALYSER
338  if ((transform_id >= 0 && transform_id <= 2) || transform_id == 10)
339  ctx->uses_haar = 1;
340 #endif
341 
342  band->inv_transform = transforms[transform_id].inv_trans;
343  band->dc_transform = transforms[transform_id].dc_trans;
344  band->is_2d_trans = transforms[transform_id].is_2d_trans;
345 
346  if (transform_id < 10)
347  band->transform_size = 8;
348  else
349  band->transform_size = 4;
350 
351  if (band->blk_size != band->transform_size) {
352  av_log(avctx, AV_LOG_ERROR, "transform and block size mismatch (%d != %d)\n", band->transform_size, band->blk_size);
353  return AVERROR_INVALIDDATA;
354  }
355 
356  scan_indx = get_bits(&ctx->gb, 4);
357  if (scan_indx == 15) {
358  av_log(avctx, AV_LOG_ERROR, "Custom scan pattern encountered!\n");
359  return AVERROR_INVALIDDATA;
360  }
361  if (scan_indx > 4 && scan_indx < 10) {
362  if (band->blk_size != 4) {
363  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
364  return AVERROR_INVALIDDATA;
365  }
366  } else if (band->blk_size != 8) {
367  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
368  return AVERROR_INVALIDDATA;
369  }
370 
371  band->scan = scan_index_to_tab[scan_indx];
372  band->scan_size = band->blk_size;
373 
374  quant_mat = get_bits(&ctx->gb, 5);
375  if (quant_mat == 31) {
376  av_log(avctx, AV_LOG_ERROR, "Custom quant matrix encountered!\n");
377  return AVERROR_INVALIDDATA;
378  }
379  if (quant_mat >= FF_ARRAY_ELEMS(quant_index_to_tab)) {
380  avpriv_request_sample(avctx, "Quantization matrix %d",
381  quant_mat);
382  return AVERROR_INVALIDDATA;
383  }
384  band->quant_mat = quant_mat;
385  } else {
386  if (old_blk_size != band->blk_size) {
387  av_log(avctx, AV_LOG_ERROR,
388  "The band block size does not match the configuration "
389  "inherited\n");
390  return AVERROR_INVALIDDATA;
391  }
392  }
393  if (quant_index_to_tab[band->quant_mat] > 4 && band->blk_size == 4) {
394  av_log(avctx, AV_LOG_ERROR, "Invalid quant matrix for 4x4 block encountered!\n");
395  band->quant_mat = 0;
396  return AVERROR_INVALIDDATA;
397  }
398  if (band->scan_size != band->blk_size) {
399  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
400  return AVERROR_INVALIDDATA;
401  }
402  if (band->transform_size == 8 && band->blk_size < 8) {
403  av_log(avctx, AV_LOG_ERROR, "mismatching transform_size!\n");
404  return AVERROR_INVALIDDATA;
405  }
406 
407  /* decode block huffman codebook */
408  if (!get_bits1(&ctx->gb))
409  band->blk_vlc.tab = ctx->blk_vlc.tab;
410  else
411  if (ff_ivi_dec_huff_desc(&ctx->gb, 1, IVI_BLK_HUFF,
412  &band->blk_vlc, avctx))
413  return AVERROR_INVALIDDATA;
414 
415  /* select appropriate rvmap table for this band */
416  band->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
417 
418  /* decode rvmap probability corrections if any */
419  band->num_corr = 0; /* there is no corrections */
420  if (get_bits1(&ctx->gb)) {
421  band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */
422  if (band->num_corr > 61) {
423  av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n",
424  band->num_corr);
425  return AVERROR_INVALIDDATA;
426  }
427 
428  /* read correction pairs */
429  for (i = 0; i < band->num_corr * 2; i++)
430  band->corr[i] = get_bits(&ctx->gb, 8);
431  }
432  }
433 
434  if (band->blk_size == 8) {
436  band->inter_base = &ivi4_quant_8x8_inter[quant_index_to_tab[band->quant_mat]][0];
437  } else {
439  band->inter_base = &ivi4_quant_4x4_inter[quant_index_to_tab[band->quant_mat]][0];
440  }
441 
442  /* Indeo 4 doesn't use scale tables */
443  band->intra_scale = NULL;
444  band->inter_scale = NULL;
445 
446  align_get_bits(&ctx->gb);
447 
448  if (!band->scan) {
449  av_log(avctx, AV_LOG_ERROR, "band->scan not set\n");
450  return AVERROR_INVALIDDATA;
451  }
452 
453  return 0;
454 }
455 
456 
457 /**
458  * Decode information (block type, cbp, quant delta, motion vector)
459  * for all macroblocks in the current tile.
460  *
461  * @param[in,out] ctx pointer to the decoder context
462  * @param[in,out] band pointer to the band descriptor
463  * @param[in,out] tile pointer to the tile descriptor
464  * @param[in] avctx pointer to the AVCodecContext
465  * @return result code: 0 = OK, negative number = error
466  */
468  IVITile *tile, AVCodecContext *avctx)
469 {
470  int x, y, mv_x, mv_y, mv_delta, offs, mb_offset, blks_per_mb,
471  mv_scale, mb_type_bits, s;
472  IVIMbInfo *mb, *ref_mb;
473  int row_offset = band->mb_size * band->pitch;
474 
475  mb = tile->mbs;
476  ref_mb = tile->ref_mbs;
477  offs = tile->ypos * band->pitch + tile->xpos;
478 
479  blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
480  mb_type_bits = ctx->frame_type == IVI4_FRAMETYPE_BIDIR ? 2 : 1;
481 
482  /* scale factor for motion vectors */
483  mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
484  mv_x = mv_y = 0;
485 
486  if (((tile->width + band->mb_size-1)/band->mb_size) * ((tile->height + band->mb_size-1)/band->mb_size) != tile->num_MBs) {
487  av_log(avctx, AV_LOG_ERROR, "num_MBs mismatch %d %d %d %d\n", tile->width, tile->height, band->mb_size, tile->num_MBs);
488  return -1;
489  }
490 
491  for (y = tile->ypos; y < tile->ypos + tile->height; y += band->mb_size) {
492  mb_offset = offs;
493 
494  for (x = tile->xpos; x < tile->xpos + tile->width; x += band->mb_size) {
495  mb->xpos = x;
496  mb->ypos = y;
497  mb->buf_offs = mb_offset;
498  mb->b_mv_x =
499  mb->b_mv_y = 0;
500 
501  if (get_bits1(&ctx->gb)) {
502  if (ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
503  av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
504  return AVERROR_INVALIDDATA;
505  }
506  mb->type = 1; /* empty macroblocks are always INTER */
507  mb->cbp = 0; /* all blocks are empty */
508 
509  mb->q_delta = 0;
510  if (!band->plane && !band->band_num && ctx->in_q) {
511  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
512  IVI_VLC_BITS, 1);
513  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
514  }
515 
516  mb->mv_x = mb->mv_y = 0; /* no motion vector coded */
517  if (band->inherit_mv && ref_mb) {
518  /* motion vector inheritance */
519  if (mv_scale) {
520  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
521  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
522  } else {
523  mb->mv_x = ref_mb->mv_x;
524  mb->mv_y = ref_mb->mv_y;
525  }
526  }
527  } else {
528  if (band->inherit_mv) {
529  /* copy mb_type from corresponding reference mb */
530  if (!ref_mb) {
531  av_log(avctx, AV_LOG_ERROR, "ref_mb unavailable\n");
532  return AVERROR_INVALIDDATA;
533  }
534  mb->type = ref_mb->type;
535  } else if (ctx->frame_type == IVI4_FRAMETYPE_INTRA ||
537  mb->type = 0; /* mb_type is always INTRA for intra-frames */
538  } else {
539  mb->type = get_bits(&ctx->gb, mb_type_bits);
540  }
541 
542  mb->cbp = get_bits(&ctx->gb, blks_per_mb);
543 
544  mb->q_delta = 0;
545  if (band->inherit_qdelta) {
546  if (ref_mb) mb->q_delta = ref_mb->q_delta;
547  } else if (mb->cbp || (!band->plane && !band->band_num &&
548  ctx->in_q)) {
549  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
550  IVI_VLC_BITS, 1);
551  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
552  }
553 
554  if (!mb->type) {
555  mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */
556  } else {
557  if (band->inherit_mv) {
558  if (ref_mb)
559  /* motion vector inheritance */
560  if (mv_scale) {
561  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
562  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
563  } else {
564  mb->mv_x = ref_mb->mv_x;
565  mb->mv_y = ref_mb->mv_y;
566  }
567  } else {
568  /* decode motion vector deltas */
569  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
570  IVI_VLC_BITS, 1);
571  mv_y += IVI_TOSIGNED(mv_delta);
572  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
573  IVI_VLC_BITS, 1);
574  mv_x += IVI_TOSIGNED(mv_delta);
575  mb->mv_x = mv_x;
576  mb->mv_y = mv_y;
577  if (mb->type == 3) {
578  mv_delta = get_vlc2(&ctx->gb,
579  ctx->mb_vlc.tab->table,
580  IVI_VLC_BITS, 1);
581  mv_y += IVI_TOSIGNED(mv_delta);
582  mv_delta = get_vlc2(&ctx->gb,
583  ctx->mb_vlc.tab->table,
584  IVI_VLC_BITS, 1);
585  mv_x += IVI_TOSIGNED(mv_delta);
586  mb->b_mv_x = -mv_x;
587  mb->b_mv_y = -mv_y;
588  }
589  }
590  if (mb->type == 2) {
591  mb->b_mv_x = -mb->mv_x;
592  mb->b_mv_y = -mb->mv_y;
593  mb->mv_x = 0;
594  mb->mv_y = 0;
595  }
596  }
597  }
598 
599  s= band->is_halfpel;
600  if (mb->type)
601  if ( x + (mb->mv_x >>s) + (y+ (mb->mv_y >>s))*band->pitch < 0 ||
602  x + ((mb->mv_x+s)>>s) + band->mb_size - 1
603  + (y+band->mb_size - 1 +((mb->mv_y+s)>>s))*band->pitch > band->bufsize -1) {
604  av_log(avctx, AV_LOG_ERROR, "motion vector %d %d outside reference\n", x*s + mb->mv_x, y*s + mb->mv_y);
605  return AVERROR_INVALIDDATA;
606  }
607 
608  mb++;
609  if (ref_mb)
610  ref_mb++;
611  mb_offset += band->mb_size;
612  }
613 
614  offs += row_offset;
615  }
616 
617  align_get_bits(&ctx->gb);
618 
619  return 0;
620 }
621 
622 
623 /**
624  * Rearrange decoding and reference buffers.
625  *
626  * @param[in,out] ctx pointer to the decoder context
627  */
629 {
630  int is_prev_ref = 0, is_ref = 0;
631 
632  switch (ctx->prev_frame_type) {
636  is_prev_ref = 1;
637  break;
638  }
639 
640  switch (ctx->frame_type) {
644  is_ref = 1;
645  break;
646  }
647 
648  if (is_prev_ref && is_ref) {
649  FFSWAP(int, ctx->dst_buf, ctx->ref_buf);
650  } else if (is_prev_ref) {
651  FFSWAP(int, ctx->ref_buf, ctx->b_ref_buf);
652  FFSWAP(int, ctx->dst_buf, ctx->ref_buf);
653  }
654 }
655 
656 
658 {
660 }
661 
662 
664 {
665  IVI45DecContext *ctx = avctx->priv_data;
666 
668 
669  /* copy rvmap tables in our context so we can apply changes to them */
670  memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
671 
672  /* Force allocation of the internal buffers */
673  /* during picture header decoding. */
674  ctx->pic_conf.pic_width = 0;
675  ctx->pic_conf.pic_height = 0;
676 
677  avctx->pix_fmt = AV_PIX_FMT_YUV410P;
678 
684 
685  ctx->is_indeo4 = 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 = CODEC_CAP_DR1,
708 };
int plane
Definition: avisynth_c.h:291
int is_empty
= 1 if this band doesn't contain any data
Definition: ivi.h:158
uint32_t data_size
size of the frame data in bytes from picture header
Definition: ivi.h:221
uint8_t type
macroblock type: 0 - INTRA, 1 - INTER
Definition: ivi.h:115
int num_MBs
number of macroblocks in this tile
Definition: ivi.h:136
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
void ff_ivi_row_slant4(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
inverse 1D row slant transform
Definition: ivi_dsp.c:708
const char * s
Definition: avisynth_c.h:631
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
void ff_ivi_col_slant4(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
inverse 1D column slant transform
Definition: ivi_dsp.c:728
static av_always_inline void mv_scale(Mv *dst, Mv *src, int td, int tb)
Definition: hevc_mvs.c:114
This file contains data needed for the Indeo 4 decoder.
InvTransformPtr * inv_transform
Definition: ivi.h:178
void( DCTransformPtr)(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
Definition: ivi.h:92
#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:260
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:261
static void skip_bits_long(GetBitContext *s, int n)
Definition: get_bits.h:217
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
void ff_ivi_dc_haar_2d(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
DC-only two-dimensional inverse Haar transform for Indeo 4.
Definition: ivi_dsp.c:472
int8_t b_mv_y
second motion vector (y component)
Definition: ivi.h:121
av_cold int ff_ivi_decode_close(AVCodecContext *avctx)
Close Indeo5 decoder and clean up its context.
Definition: ivi.c:1180
int(* decode_mb_info)(struct IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx)
Definition: ivi.h:263
#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:235
void ff_ivi_put_dc_pixel_8x8(const int32_t *in, int16_t *out, uint32_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
int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ivi.c:1052
DSP functions (inverse transforms, motion compensations, wavelet recompostion) for Indeo Video Intera...
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1471
int is_halfpel
precision of the motion compensation: 0 - fullpel, 1 - halfpel
Definition: ivi.h:161
uint8_t chroma_bands
Definition: ivi.h:211
#define FF_ARRAY_ELEMS(a)
int plane
plane number this band belongs to
Definition: ivi.h:146
int bufsize
band buffer size in bytes
Definition: ivi.h:184
IVIPicConfig pic_conf
Definition: ivi.h:231
AVCodec.
Definition: avcodec.h:3206
int quant_mat
dequant matrix index
Definition: ivi.h:165
Huffman table is used for coding macroblocks.
Definition: ivi.h:76
int8_t b_mv_x
second motion vector (x component)
Definition: ivi.h:120
void ff_ivi_put_pixels_8x8(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
Copy the pixels into the frame buffer.
Definition: ivi_dsp.c:751
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 luma_bands
Definition: ivi.h:210
VLC * tab
index of one of the predefined tables or "7" for custom one
Definition: ivi.h:67
#define av_cold
Definition: attributes.h:74
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:135
#define mb
uint8_t pic_glob_quant
Definition: ivi.h:246
const uint16_t * inter_base
quantization matrix for inter blocks
Definition: ivi.h:186
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:303
uint16_t pic_height
Definition: ivi.h:205
static const uint16_t ivi4_common_pic_sizes[14]
standard picture dimensions
Definition: indeo4data.h:37
int inherit_mv
tells if motion vector is inherited from reference macroblock
Definition: ivi.h:162
static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Decode Indeo 4 band header.
Definition: indeo4.c:270
uint16_t tile_height
Definition: ivi.h:209
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:794
GetBitContext gb
Definition: ivi.h:215
void( InvTransformPtr)(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
Declare inverse transform function types.
Definition: ivi.h:91
uint16_t chroma_width
Definition: ivi.h:206
int pitch
pitch associated with the buffers above
Definition: ivi.h:157
static const uint16_t ivi4_quant_8x8_inter[9][64]
Definition: indeo4data.h:182
uint8_t cbp
coded block pattern
Definition: ivi.h:116
void ff_ivi_row_haar8(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
one-dimensional inverse 8-point Haar transform on rows for Indeo 4
Definition: ivi_dsp.c:325
uint16_t checksum
frame checksum
Definition: ivi.h:229
bitstream reader API header.
uint16_t pic_width
Definition: ivi.h:204
static const uint16_t ivi4_quant_4x4_inter[5][16]
Definition: indeo4data.h:308
IVIPlaneDesc planes[3]
color planes
Definition: ivi.h:232
#define av_log(a,...)
void ff_ivi_row_slant8(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
inverse 1D row slant transform
Definition: ivi_dsp.c:629
const uint16_t * intra_base
quantization matrix for intra blocks
Definition: ivi.h:185
intra frame with slightly different bitstream coding
Definition: ivi.h:41
void ff_ivi_dc_row_slant(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
DC-only inverse row slant transform.
Definition: ivi_dsp.c:649
uint8_t unknown1
Definition: ivi.h:247
int blk_size
block size
Definition: ivi.h:160
#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:173
static const struct @57 transforms[18]
void ff_ivi_inverse_haar_8x8(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
two-dimensional inverse Haar 8x8 transform for Indeo 4
Definition: ivi_dsp.c:270
RVMapDesc rvmap_tabs[9]
local corrected copy of the static rvmap tables
Definition: ivi.h:216
void ff_ivi_col_haar4(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
one-dimensional inverse 4-point Haar transform on columns for Indeo 4
Definition: ivi_dsp.c:448
#define AVERROR(e)
Definition: error.h:43
uint8_t in_q
flag for explicitly stored quantiser delta
Definition: ivi.h:245
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:175
int is_indeo4
Definition: ivi.h:270
av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height)
Initialize tile and macroblock descriptors.
Definition: ivi.c:419
DCTransformPtr * dc_trans
Definition: indeo4.c:43
void ff_ivi_dc_col_slant(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
DC-only inverse column slant transform.
Definition: ivi_dsp.c:694
int ref_buf
inter frame reference buffer index
Definition: ivi.h:236
DCTransformPtr * dc_transform
Definition: ivi.h:180
This file contains structures and macros shared by both Indeo4 and Indeo5 decoders.
const char * name
Name of the codec implementation.
Definition: avcodec.h:3213
static int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
compare some properties of two pictures
Definition: ivi.h:277
Libavcodec external API header.
void ff_ivi_inverse_haar_4x4(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
two-dimensional inverse Haar 4x4 transform for Indeo 4
Definition: ivi_dsp.c:379
int inherit_qdelta
tells if quantiser delta is inherited from reference macroblock
Definition: ivi.h:163
uint32_t frame_num
Definition: ivi.h:218
AVFrame * p_frame
Definition: ivi.h:272
int(* decode_band_hdr)(struct IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Definition: ivi.h:262
const RVMapDesc ff_ivi_rvmap_tabs[9]
Run-value (RLE) tables.
Definition: ivi.c:1245
int is_scalable
Definition: ivi.h:222
float y
int is_2d_trans
Definition: indeo4.c:44
IVIMbInfo * mbs
array of macroblock descriptors
Definition: ivi.h:137
static void switch_buffers(IVI45DecContext *ctx)
Rearrange decoding and reference buffers.
Definition: indeo4.c:628
const uint8_t * inter_scale
quantization coefficient for inter blocks
Definition: ivi.h:188
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:555
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:224
uint16_t chroma_height
Definition: ivi.h:207
static const uint8_t *const scan_index_to_tab[15]
Definition: indeo4data.h:63
int8_t q_delta
quant delta
Definition: ivi.h:117
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
void ff_ivi_inverse_slant_8x8(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
two-dimensional inverse slant 8x8 transform
Definition: ivi_dsp.c:536
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
uint16_t tile_width
Definition: ivi.h:208
int ypos
Definition: ivi.h:130
IVIHuffTab mb_vlc
current macroblock table descriptor
Definition: ivi.h:240
int is_2d_trans
1 indicates that the two-dimensional inverse transform is used
Definition: ivi.h:181
int glob_quant
quant base for this band
Definition: ivi.h:166
#define ff_dlog(ctx,...)
Definition: internal.h:54
int height
Definition: ivi.h:132
main external API structure.
Definition: avcodec.h:1252
int num_corr
number of correction entries
Definition: ivi.h:172
static int ivi_scale_mv(int mv, int mv_scale)
scale motion vector
Definition: ivi.h:296
information for Indeo tile
Definition: ivi.h:128
int(* is_nonnull_frame)(struct IVI45DecContext *ctx)
Definition: ivi.h:265
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:304
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:69
uint8_t in_imf
Definition: ivi.h:244
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:297
bidirectional frame
Definition: ivi.h:43
void ff_ivi_col_haar8(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
one-dimensional inverse 8-point Haar transform on columns for Indeo 4
Definition: ivi_dsp.c:350
static const uint16_t ivi4_quant_4x4_intra[5][16]
Definition: indeo4data.h:275
void(* switch_buffers)(struct IVI45DecContext *ctx)
Definition: ivi.h:264
IVIBandDesc * bands
array of band descriptors
Definition: ivi.h:199
int32_t checksum
for debug purposes
Definition: ivi.h:182
int rvmap_sel
rvmap table selector
Definition: ivi.h:174
int8_t mv_x
motion vector (x component)
Definition: ivi.h:118
int8_t mv_y
motion vector (y component)
Definition: ivi.h:119
#define IVI_TOSIGNED(val)
convert unsigned values into signed ones (the sign is in the LSB)
Definition: ivi.h:293
int mb_size
macroblock size
Definition: ivi.h:159
IVIMbInfo * ref_mbs
ptr to the macroblock descriptors of the reference tile
Definition: ivi.h:138
int xpos
Definition: ivi.h:129
IVIHuffTab blk_vlc
current block table descriptor
Definition: ivi.h:241
void ff_ivi_inverse_slant_4x4(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
two-dimensional inverse slant 4x4 transform
Definition: ivi_dsp.c:576
int16_t xpos
Definition: ivi.h:112
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:522
int band_num
band number
Definition: ivi.h:147
InvTransformPtr * inv_trans
Definition: indeo4.c:42
common internal api header.
int transform_size
Definition: ivi.h:179
static int is_nonnull_frame(IVI45DecContext *ctx)
Definition: indeo4.c:657
empty frame with no data
Definition: ivi.h:45
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:467
const uint8_t * scan
ptr to the scan pattern
Definition: ivi.h:167
void * priv_data
Definition: avcodec.h:1294
int width
Definition: ivi.h:131
static av_cold int decode_init(AVCodecContext *avctx)
Definition: indeo4.c:663
int checksum_present
Definition: ivi.h:183
VLC_TYPE(* table)[2]
code, bits
Definition: get_bits.h:65
int transp_status
transparency mode status: 1 - enabled
Definition: ivi.h:223
void ff_ivi_dc_slant_2d(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
DC-only two-dimensional inverse slant transform.
Definition: ivi_dsp.c:616
static const uint8_t * align_get_bits(GetBitContext *s)
Definition: get_bits.h:449
int16_t ypos
Definition: ivi.h:113
int prev_frame_type
frame type of the previous frame
Definition: ivi.h:220
information for Indeo macroblock (16x16, 8x8 or 4x4)
Definition: ivi.h:111
IVIHuffTab blk_vlc
vlc table for decoding block data
Definition: ivi.h:170
int scan_size
size of the scantable
Definition: ivi.h:168
av_cold void ff_ivi_init_static_vlc(void)
Initialize static codes used for macroblock and block decoding.
Definition: ivi.c:177
void ff_ivi_row_haar4(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
one-dimensional inverse 4-point Haar transform on rows for Indeo 4
Definition: ivi_dsp.c:426
const uint8_t * intra_scale
quantization coefficient for intra blocks
Definition: ivi.h:187
#define FFSWAP(type, a, b)
Definition: common.h:69
uint32_t buf_offs
address in the output buffer for this mb
Definition: ivi.h:114
int b_ref_buf
second reference frame buffer index
Definition: ivi.h:238
information for Indeo wavelet band
Definition: ivi.h:145
uint8_t rvmap_sel
Definition: ivi.h:243
AVCodec ff_indeo4_decoder
Definition: indeo4.c:698
int frame_type
Definition: ivi.h:219
void ff_ivi_col_slant8(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
inverse 1D column slant transform
Definition: ivi_dsp.c:667
non-droppable P-frame
Definition: ivi.h:42