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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  if (get_bits_left(&ctx->gb) < 10)
250  return AVERROR_INVALIDDATA;
251  skip_bits(&ctx->gb, 8);
252  }
253 
254  if (get_bits1(&ctx->gb)) {
255  av_log(avctx, AV_LOG_ERROR, "Bad blocks bits encountered!\n");
256  }
257 
258  align_get_bits(&ctx->gb);
259 
260  return 0;
261 }
262 
263 
264 /**
265  * Decode Indeo 4 band header.
266  *
267  * @param[in,out] ctx pointer to the decoder context
268  * @param[in,out] band pointer to the band descriptor
269  * @param[in] avctx pointer to the AVCodecContext
270  * @return result code: 0 = OK, negative number = error
271  */
272 static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *arg_band,
273  AVCodecContext *avctx)
274 {
275  int plane, band_num, indx, transform_id, scan_indx;
276  int i;
277  int quant_mat;
278  IVIBandDesc temp_band, *band = &temp_band;
279  memcpy(&temp_band, arg_band, sizeof(temp_band));
280 
281  plane = get_bits(&ctx->gb, 2);
282  band_num = get_bits(&ctx->gb, 4);
283  if (band->plane != plane || band->band_num != band_num) {
284  av_log(avctx, AV_LOG_ERROR, "Invalid band header sequence!\n");
285  return AVERROR_INVALIDDATA;
286  }
287 
288  band->is_empty = get_bits1(&ctx->gb);
289  if (!band->is_empty) {
290  int old_blk_size = band->blk_size;
291  /* skip header size
292  * If header size is not given, header size is 4 bytes. */
293  if (get_bits1(&ctx->gb))
294  skip_bits(&ctx->gb, 16);
295 
296  band->is_halfpel = get_bits(&ctx->gb, 2);
297  if (band->is_halfpel >= 2) {
298  av_log(avctx, AV_LOG_ERROR, "Invalid/unsupported mv resolution: %d!\n",
299  band->is_halfpel);
300  return AVERROR_INVALIDDATA;
301  }
302 #if IVI4_STREAM_ANALYSER
303  if (!band->is_halfpel)
304  ctx->uses_fullpel = 1;
305 #endif
306 
307  band->checksum_present = get_bits1(&ctx->gb);
308  if (band->checksum_present)
309  band->checksum = get_bits(&ctx->gb, 16);
310 
311  indx = get_bits(&ctx->gb, 2);
312  if (indx == 3) {
313  av_log(avctx, AV_LOG_ERROR, "Invalid block size!\n");
314  return AVERROR_INVALIDDATA;
315  }
316  band->mb_size = 16 >> indx;
317  band->blk_size = 8 >> (indx >> 1);
318 
319  band->inherit_mv = get_bits1(&ctx->gb);
320  band->inherit_qdelta = get_bits1(&ctx->gb);
321 
322  band->glob_quant = get_bits(&ctx->gb, 5);
323 
324  if (!get_bits1(&ctx->gb) || ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
325  transform_id = get_bits(&ctx->gb, 5);
326  if (transform_id >= FF_ARRAY_ELEMS(transforms) ||
327  !transforms[transform_id].inv_trans) {
328  avpriv_request_sample(avctx, "Transform %d", transform_id);
329  return AVERROR_PATCHWELCOME;
330  }
331  if ((transform_id >= 7 && transform_id <= 9) ||
332  transform_id == 17) {
333  avpriv_request_sample(avctx, "DCT transform");
334  return AVERROR_PATCHWELCOME;
335  }
336 
337  if (transform_id < 10 && band->blk_size < 8) {
338  av_log(avctx, AV_LOG_ERROR, "wrong transform size!\n");
339  return AVERROR_INVALIDDATA;
340  }
341 #if IVI4_STREAM_ANALYSER
342  if ((transform_id >= 0 && transform_id <= 2) || transform_id == 10)
343  ctx->uses_haar = 1;
344 #endif
345 
346  band->inv_transform = transforms[transform_id].inv_trans;
347  band->dc_transform = transforms[transform_id].dc_trans;
348  band->is_2d_trans = transforms[transform_id].is_2d_trans;
349 
350  if (transform_id < 10)
351  band->transform_size = 8;
352  else
353  band->transform_size = 4;
354 
355  if (band->blk_size != band->transform_size) {
356  av_log(avctx, AV_LOG_ERROR, "transform and block size mismatch (%d != %d)\n", band->transform_size, band->blk_size);
357  return AVERROR_INVALIDDATA;
358  }
359 
360  scan_indx = get_bits(&ctx->gb, 4);
361  if (scan_indx == 15) {
362  av_log(avctx, AV_LOG_ERROR, "Custom scan pattern encountered!\n");
363  return AVERROR_INVALIDDATA;
364  }
365  if (scan_indx > 4 && scan_indx < 10) {
366  if (band->blk_size != 4) {
367  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
368  return AVERROR_INVALIDDATA;
369  }
370  } else if (band->blk_size != 8) {
371  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
372  return AVERROR_INVALIDDATA;
373  }
374 
375  band->scan = scan_index_to_tab[scan_indx];
376  band->scan_size = band->blk_size;
377 
378  quant_mat = get_bits(&ctx->gb, 5);
379  if (quant_mat == 31) {
380  av_log(avctx, AV_LOG_ERROR, "Custom quant matrix encountered!\n");
381  return AVERROR_INVALIDDATA;
382  }
383  if (quant_mat >= FF_ARRAY_ELEMS(quant_index_to_tab)) {
384  avpriv_request_sample(avctx, "Quantization matrix %d",
385  quant_mat);
386  return AVERROR_INVALIDDATA;
387  }
388  band->quant_mat = quant_mat;
389  } else {
390  if (old_blk_size != band->blk_size) {
391  av_log(avctx, AV_LOG_ERROR,
392  "The band block size does not match the configuration "
393  "inherited\n");
394  return AVERROR_INVALIDDATA;
395  }
396  }
397  if (quant_index_to_tab[band->quant_mat] > 4 && band->blk_size == 4) {
398  av_log(avctx, AV_LOG_ERROR, "Invalid quant matrix for 4x4 block encountered!\n");
399  band->quant_mat = 0;
400  return AVERROR_INVALIDDATA;
401  }
402  if (band->scan_size != band->blk_size) {
403  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
404  return AVERROR_INVALIDDATA;
405  }
406  if (band->transform_size == 8 && band->blk_size < 8) {
407  av_log(avctx, AV_LOG_ERROR, "mismatching transform_size!\n");
408  return AVERROR_INVALIDDATA;
409  }
410 
411  /* decode block huffman codebook */
412  if (!get_bits1(&ctx->gb))
413  arg_band->blk_vlc.tab = ctx->blk_vlc.tab;
414  else
415  if (ff_ivi_dec_huff_desc(&ctx->gb, 1, IVI_BLK_HUFF,
416  &arg_band->blk_vlc, avctx))
417  return AVERROR_INVALIDDATA;
418 
419  /* select appropriate rvmap table for this band */
420  band->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
421 
422  /* decode rvmap probability corrections if any */
423  band->num_corr = 0; /* there is no corrections */
424  if (get_bits1(&ctx->gb)) {
425  band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */
426  if (band->num_corr > 61) {
427  av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n",
428  band->num_corr);
429  return AVERROR_INVALIDDATA;
430  }
431 
432  /* read correction pairs */
433  for (i = 0; i < band->num_corr * 2; i++)
434  band->corr[i] = get_bits(&ctx->gb, 8);
435  }
436  }
437 
438  if (band->blk_size == 8) {
440  band->inter_base = &ivi4_quant_8x8_inter[quant_index_to_tab[band->quant_mat]][0];
441  } else {
443  band->inter_base = &ivi4_quant_4x4_inter[quant_index_to_tab[band->quant_mat]][0];
444  }
445 
446  /* Indeo 4 doesn't use scale tables */
447  band->intra_scale = NULL;
448  band->inter_scale = NULL;
449 
450  align_get_bits(&ctx->gb);
451 
452  if (!band->scan) {
453  av_log(avctx, AV_LOG_ERROR, "band->scan not set\n");
454  return AVERROR_INVALIDDATA;
455  }
456 
457  band->blk_vlc = arg_band->blk_vlc;
458  memcpy(arg_band, band, sizeof(*arg_band));
459 
460  return 0;
461 }
462 
463 
464 /**
465  * Decode information (block type, cbp, quant delta, motion vector)
466  * for all macroblocks in the current tile.
467  *
468  * @param[in,out] ctx pointer to the decoder context
469  * @param[in,out] band pointer to the band descriptor
470  * @param[in,out] tile pointer to the tile descriptor
471  * @param[in] avctx pointer to the AVCodecContext
472  * @return result code: 0 = OK, negative number = error
473  */
475  IVITile *tile, AVCodecContext *avctx)
476 {
477  int x, y, mv_x, mv_y, mv_delta, offs, mb_offset, blks_per_mb,
478  mv_scale, mb_type_bits, s;
479  IVIMbInfo *mb, *ref_mb;
480  int row_offset = band->mb_size * band->pitch;
481 
482  mb = tile->mbs;
483  ref_mb = tile->ref_mbs;
484  offs = tile->ypos * band->pitch + tile->xpos;
485 
486  blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
487  mb_type_bits = ctx->frame_type == IVI4_FRAMETYPE_BIDIR ? 2 : 1;
488 
489  /* scale factor for motion vectors */
490  mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
491  mv_x = mv_y = 0;
492 
493  if (((tile->width + band->mb_size-1)/band->mb_size) * ((tile->height + band->mb_size-1)/band->mb_size) != tile->num_MBs) {
494  av_log(avctx, AV_LOG_ERROR, "num_MBs mismatch %d %d %d %d\n", tile->width, tile->height, band->mb_size, tile->num_MBs);
495  return -1;
496  }
497 
498  for (y = tile->ypos; y < tile->ypos + tile->height; y += band->mb_size) {
499  mb_offset = offs;
500 
501  for (x = tile->xpos; x < tile->xpos + tile->width; x += band->mb_size) {
502  mb->xpos = x;
503  mb->ypos = y;
504  mb->buf_offs = mb_offset;
505  mb->b_mv_x =
506  mb->b_mv_y = 0;
507 
508  if (get_bits_left(&ctx->gb) < 1) {
509  av_log(avctx, AV_LOG_ERROR, "Insufficient input for mb info\n");
510  return AVERROR_INVALIDDATA;
511  }
512 
513  if (get_bits1(&ctx->gb)) {
514  if (ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
515  av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
516  return AVERROR_INVALIDDATA;
517  }
518  mb->type = 1; /* empty macroblocks are always INTER */
519  mb->cbp = 0; /* all blocks are empty */
520 
521  mb->q_delta = 0;
522  if (!band->plane && !band->band_num && ctx->in_q) {
523  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
524  IVI_VLC_BITS, 1);
525  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
526  }
527 
528  mb->mv_x = mb->mv_y = 0; /* no motion vector coded */
529  if (band->inherit_mv && ref_mb) {
530  /* motion vector inheritance */
531  if (mv_scale) {
532  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
533  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
534  } else {
535  mb->mv_x = ref_mb->mv_x;
536  mb->mv_y = ref_mb->mv_y;
537  }
538  }
539  } else {
540  if (band->inherit_mv) {
541  /* copy mb_type from corresponding reference mb */
542  if (!ref_mb) {
543  av_log(avctx, AV_LOG_ERROR, "ref_mb unavailable\n");
544  return AVERROR_INVALIDDATA;
545  }
546  mb->type = ref_mb->type;
547  } else if (ctx->frame_type == IVI4_FRAMETYPE_INTRA ||
549  mb->type = 0; /* mb_type is always INTRA for intra-frames */
550  } else {
551  mb->type = get_bits(&ctx->gb, mb_type_bits);
552  }
553 
554  mb->cbp = get_bits(&ctx->gb, blks_per_mb);
555 
556  mb->q_delta = 0;
557  if (band->inherit_qdelta) {
558  if (ref_mb) mb->q_delta = ref_mb->q_delta;
559  } else if (mb->cbp || (!band->plane && !band->band_num &&
560  ctx->in_q)) {
561  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
562  IVI_VLC_BITS, 1);
563  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
564  }
565 
566  if (!mb->type) {
567  mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */
568  } else {
569  if (band->inherit_mv) {
570  if (ref_mb)
571  /* motion vector inheritance */
572  if (mv_scale) {
573  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
574  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
575  } else {
576  mb->mv_x = ref_mb->mv_x;
577  mb->mv_y = ref_mb->mv_y;
578  }
579  } else {
580  /* decode motion vector deltas */
581  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
582  IVI_VLC_BITS, 1);
583  mv_y += IVI_TOSIGNED(mv_delta);
584  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
585  IVI_VLC_BITS, 1);
586  mv_x += IVI_TOSIGNED(mv_delta);
587  mb->mv_x = mv_x;
588  mb->mv_y = mv_y;
589  if (mb->type == 3) {
590  mv_delta = get_vlc2(&ctx->gb,
591  ctx->mb_vlc.tab->table,
592  IVI_VLC_BITS, 1);
593  mv_y += IVI_TOSIGNED(mv_delta);
594  mv_delta = get_vlc2(&ctx->gb,
595  ctx->mb_vlc.tab->table,
596  IVI_VLC_BITS, 1);
597  mv_x += IVI_TOSIGNED(mv_delta);
598  mb->b_mv_x = -mv_x;
599  mb->b_mv_y = -mv_y;
600  }
601  }
602  if (mb->type == 2) {
603  mb->b_mv_x = -mb->mv_x;
604  mb->b_mv_y = -mb->mv_y;
605  mb->mv_x = 0;
606  mb->mv_y = 0;
607  }
608  }
609  }
610 
611  s= band->is_halfpel;
612  if (mb->type)
613  if ( x + (mb->mv_x >>s) + (y+ (mb->mv_y >>s))*band->pitch < 0 ||
614  x + ((mb->mv_x+s)>>s) + band->mb_size - 1
615  + (y+band->mb_size - 1 +((mb->mv_y+s)>>s))*band->pitch > band->bufsize -1) {
616  av_log(avctx, AV_LOG_ERROR, "motion vector %d %d outside reference\n", x*s + mb->mv_x, y*s + mb->mv_y);
617  return AVERROR_INVALIDDATA;
618  }
619 
620  mb++;
621  if (ref_mb)
622  ref_mb++;
623  mb_offset += band->mb_size;
624  }
625 
626  offs += row_offset;
627  }
628 
629  align_get_bits(&ctx->gb);
630 
631  return 0;
632 }
633 
634 
635 /**
636  * Rearrange decoding and reference buffers.
637  *
638  * @param[in,out] ctx pointer to the decoder context
639  */
641 {
642  int is_prev_ref = 0, is_ref = 0;
643 
644  switch (ctx->prev_frame_type) {
648  is_prev_ref = 1;
649  break;
650  }
651 
652  switch (ctx->frame_type) {
656  is_ref = 1;
657  break;
658  }
659 
660  if (is_prev_ref && is_ref) {
661  FFSWAP(int, ctx->dst_buf, ctx->ref_buf);
662  } else if (is_prev_ref) {
663  FFSWAP(int, ctx->ref_buf, ctx->b_ref_buf);
664  FFSWAP(int, ctx->dst_buf, ctx->ref_buf);
665  }
666 }
667 
668 
670 {
672 }
673 
674 
676 {
677  IVI45DecContext *ctx = avctx->priv_data;
678 
680 
681  /* copy rvmap tables in our context so we can apply changes to them */
682  memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
683 
684  /* Force allocation of the internal buffers */
685  /* during picture header decoding. */
686  ctx->pic_conf.pic_width = 0;
687  ctx->pic_conf.pic_height = 0;
688 
689  avctx->pix_fmt = AV_PIX_FMT_YUV410P;
690 
696 
697  ctx->is_indeo4 = 1;
698 
699  ctx->dst_buf = 0;
700  ctx->ref_buf = 1;
701  ctx->b_ref_buf = 3; /* buffer 2 is used for scalability mode */
702  ctx->p_frame = av_frame_alloc();
703  if (!ctx->p_frame)
704  return AVERROR(ENOMEM);
705 
706  return 0;
707 }
708 
709 
711  .name = "indeo4",
712  .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 4"),
713  .type = AVMEDIA_TYPE_VIDEO,
714  .id = AV_CODEC_ID_INDEO4,
715  .priv_data_size = sizeof(IVI45DecContext),
716  .init = decode_init,
717  .close = ff_ivi_decode_close,
719  .capabilities = AV_CODEC_CAP_DR1,
720 };
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
intra frame with slightly different bitstream coding
Definition: ivi.h:41
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:261
bidirectional frame
Definition: ivi.h:43
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:218
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
#define avpriv_request_sample(...)
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:1186
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:1056
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:1732
int is_halfpel
precision of the motion compensation: 0 - fullpel, 1 - halfpel
Definition: ivi.h:161
uint8_t chroma_bands
Definition: ivi.h:211
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:3482
int quant_mat
dequant matrix index
Definition: ivi.h:165
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
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:304
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
uint16_t tile_height
Definition: ivi.h:209
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
#define ff_dlog(a,...)
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
non-droppable P-frame
Definition: ivi.h:42
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
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
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:594
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
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:178
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:420
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:3489
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:1251
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:640
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:561
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:225
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
#define FF_ARRAY_ELEMS(a)
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
int height
Definition: ivi.h:132
main external API structure.
Definition: avcodec.h:1512
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:305
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:73
uint8_t in_imf
Definition: ivi.h:244
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:298
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
empty frame with no data
Definition: ivi.h:45
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:521
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:669
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:474
const uint8_t * scan
ptr to the scan pattern
Definition: ivi.h:167
void * priv_data
Definition: avcodec.h:1554
int width
Definition: ivi.h:131
static av_cold int decode_init(AVCodecContext *avctx)
Definition: indeo4.c:675
int checksum_present
Definition: ivi.h:183
VLC_TYPE(* table)[2]
code, bits
Definition: get_bits.h:66
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:454
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:178
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:95
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
static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *arg_band, AVCodecContext *avctx)
Decode Indeo 4 band header.
Definition: indeo4.c:272
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:857
Huffman table is used for coding macroblocks.
Definition: ivi.h:76
uint8_t rvmap_sel
Definition: ivi.h:243
static const struct @55 transforms[18]
AVCodec ff_indeo4_decoder
Definition: indeo4.c:710
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