FFmpeg  2.1.1
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_dsp.h"
34 #include "ivi_common.h"
35 #include "indeo4data.h"
36 
37 /**
38  * Indeo 4 frame types.
39  */
40 enum {
42  FRAMETYPE_INTRA1 = 1, ///< intra frame with slightly different bitstream coding
43  FRAMETYPE_INTER = 2, ///< non-droppable P-frame
44  FRAMETYPE_BIDIR = 3, ///< bidirectional frame
45  FRAMETYPE_INTER_NOREF = 4, ///< droppable P-frame
46  FRAMETYPE_NULL_FIRST = 5, ///< empty frame with no data
47  FRAMETYPE_NULL_LAST = 6 ///< empty frame with no data
48 };
49 
50 #define IVI4_PIC_SIZE_ESC 7
51 
52 
53 static const struct {
57 } transforms[18] = {
65  { NULL, NULL, 0 }, /* inverse DCT 8x8 */
66  { NULL, NULL, 0 }, /* inverse DCT 8x1 */
67  { NULL, NULL, 0 }, /* inverse DCT 1x8 */
70  { NULL, NULL, 0 }, /* no transform 4x4 */
75  { NULL, NULL, 0 }, /* inverse DCT 4x4 */
76 };
77 
78 /**
79  * Decode subdivision of a plane.
80  * This is a simplified version that checks for two supported subdivisions:
81  * - 1 wavelet band per plane, size factor 1:1, code pattern: 3
82  * - 4 wavelet bands per plane, size factor 1:4, code pattern: 2,3,3,3,3
83  * Anything else is either unsupported or corrupt.
84  *
85  * @param[in,out] gb the GetBit context
86  * @return number of wavelet bands or 0 on error
87  */
89 {
90  int i;
91 
92  switch (get_bits(gb, 2)) {
93  case 3:
94  return 1;
95  case 2:
96  for (i = 0; i < 4; i++)
97  if (get_bits(gb, 2) != 3)
98  return 0;
99  return 4;
100  default:
101  return 0;
102  }
103 }
104 
105 static inline int scale_tile_size(int def_size, int size_factor)
106 {
107  return size_factor == 15 ? def_size : (size_factor + 1) << 5;
108 }
109 
110 /**
111  * Decode Indeo 4 picture header.
112  *
113  * @param[in,out] ctx pointer to the decoder context
114  * @param[in] avctx pointer to the AVCodecContext
115  * @return result code: 0 = OK, negative number = error
116  */
118 {
119  int pic_size_indx, i, p;
120  IVIPicConfig pic_conf;
121 
122  if (get_bits(&ctx->gb, 18) != 0x3FFF8) {
123  av_log(avctx, AV_LOG_ERROR, "Invalid picture start code!\n");
124  return AVERROR_INVALIDDATA;
125  }
126 
127  ctx->prev_frame_type = ctx->frame_type;
128  ctx->frame_type = get_bits(&ctx->gb, 3);
129  if (ctx->frame_type == 7) {
130  av_log(avctx, AV_LOG_ERROR, "Invalid frame type: %d\n", ctx->frame_type);
131  return AVERROR_INVALIDDATA;
132  }
133 
134 #if IVI4_STREAM_ANALYSER
135  if (ctx->frame_type == FRAMETYPE_BIDIR)
136  ctx->has_b_frames = 1;
137 #endif
138 
139  ctx->transp_status = get_bits1(&ctx->gb);
140 #if IVI4_STREAM_ANALYSER
141  if (ctx->transp_status) {
142  ctx->has_transp = 1;
143  }
144 #endif
145 
146  /* unknown bit: Mac decoder ignores this bit, XANIM returns error */
147  if (get_bits1(&ctx->gb)) {
148  av_log(avctx, AV_LOG_ERROR, "Sync bit is set!\n");
149  return AVERROR_INVALIDDATA;
150  }
151 
152  ctx->data_size = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 24) : 0;
153 
154  /* null frames don't contain anything else so we just return */
155  if (ctx->frame_type >= FRAMETYPE_NULL_FIRST) {
156  av_dlog(avctx, "Null frame encountered!\n");
157  return 0;
158  }
159 
160  /* Check key lock status. If enabled - ignore lock word. */
161  /* Usually we have to prompt the user for the password, but */
162  /* we don't do that because Indeo 4 videos can be decoded anyway */
163  if (get_bits1(&ctx->gb)) {
164  skip_bits_long(&ctx->gb, 32);
165  av_dlog(avctx, "Password-protected clip!\n");
166  }
167 
168  pic_size_indx = get_bits(&ctx->gb, 3);
169  if (pic_size_indx == IVI4_PIC_SIZE_ESC) {
170  pic_conf.pic_height = get_bits(&ctx->gb, 16);
171  pic_conf.pic_width = get_bits(&ctx->gb, 16);
172  } else {
173  pic_conf.pic_height = ivi4_common_pic_sizes[pic_size_indx * 2 + 1];
174  pic_conf.pic_width = ivi4_common_pic_sizes[pic_size_indx * 2 ];
175  }
176 
177  /* Decode tile dimensions. */
178  if (get_bits1(&ctx->gb)) {
179  pic_conf.tile_height = scale_tile_size(pic_conf.pic_height, get_bits(&ctx->gb, 4));
180  pic_conf.tile_width = scale_tile_size(pic_conf.pic_width, get_bits(&ctx->gb, 4));
181 #if IVI4_STREAM_ANALYSER
182  ctx->uses_tiling = 1;
183 #endif
184  } else {
185  pic_conf.tile_height = pic_conf.pic_height;
186  pic_conf.tile_width = pic_conf.pic_width;
187  }
188 
189  /* Decode chroma subsampling. We support only 4:4 aka YVU9. */
190  if (get_bits(&ctx->gb, 2)) {
191  av_log(avctx, AV_LOG_ERROR, "Only YVU9 picture format is supported!\n");
192  return AVERROR_INVALIDDATA;
193  }
194  pic_conf.chroma_height = (pic_conf.pic_height + 3) >> 2;
195  pic_conf.chroma_width = (pic_conf.pic_width + 3) >> 2;
196 
197  /* decode subdivision of the planes */
198  pic_conf.luma_bands = decode_plane_subdivision(&ctx->gb);
199  pic_conf.chroma_bands = 0;
200  if (pic_conf.luma_bands)
201  pic_conf.chroma_bands = decode_plane_subdivision(&ctx->gb);
202  ctx->is_scalable = pic_conf.luma_bands != 1 || pic_conf.chroma_bands != 1;
203  if (ctx->is_scalable && (pic_conf.luma_bands != 4 || pic_conf.chroma_bands != 1)) {
204  av_log(avctx, AV_LOG_ERROR, "Scalability: unsupported subdivision! Luma bands: %d, chroma bands: %d\n",
205  pic_conf.luma_bands, pic_conf.chroma_bands);
206  return AVERROR_INVALIDDATA;
207  }
208 
209  /* check if picture layout was changed and reallocate buffers */
210  if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf)) {
211  if (ff_ivi_init_planes(ctx->planes, &pic_conf)) {
212  av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
213  ctx->pic_conf.luma_bands = 0;
214  return AVERROR(ENOMEM);
215  }
216 
217  ctx->pic_conf = pic_conf;
218 
219  /* set default macroblock/block dimensions */
220  for (p = 0; p <= 2; p++) {
221  for (i = 0; i < (!p ? pic_conf.luma_bands : pic_conf.chroma_bands); i++) {
222  ctx->planes[p].bands[i].mb_size = !p ? (!ctx->is_scalable ? 16 : 8) : 4;
223  ctx->planes[p].bands[i].blk_size = !p ? 8 : 4;
224  }
225  }
226 
228  ctx->pic_conf.tile_height)) {
229  av_log(avctx, AV_LOG_ERROR,
230  "Couldn't reallocate internal structures!\n");
231  return AVERROR(ENOMEM);
232  }
233  }
234 
235  ctx->frame_num = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 20) : 0;
236 
237  /* skip decTimeEst field if present */
238  if (get_bits1(&ctx->gb))
239  skip_bits(&ctx->gb, 8);
240 
241  /* decode macroblock and block huffman codebooks */
242  if (ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_MB_HUFF, &ctx->mb_vlc, avctx) ||
243  ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_BLK_HUFF, &ctx->blk_vlc, avctx))
244  return AVERROR_INVALIDDATA;
245 
246  ctx->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
247 
248  ctx->in_imf = get_bits1(&ctx->gb);
249  ctx->in_q = get_bits1(&ctx->gb);
250 
251  ctx->pic_glob_quant = get_bits(&ctx->gb, 5);
252 
253  /* TODO: ignore this parameter if unused */
254  ctx->unknown1 = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 0;
255 
256  ctx->checksum = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 16) : 0;
257 
258  /* skip picture header extension if any */
259  while (get_bits1(&ctx->gb)) {
260  av_dlog(avctx, "Pic hdr extension encountered!\n");
261  skip_bits(&ctx->gb, 8);
262  }
263 
264  if (get_bits1(&ctx->gb)) {
265  av_log(avctx, AV_LOG_ERROR, "Bad blocks bits encountered!\n");
266  }
267 
268  align_get_bits(&ctx->gb);
269 
270  return 0;
271 }
272 
273 
274 /**
275  * Decode Indeo 4 band header.
276  *
277  * @param[in,out] ctx pointer to the decoder context
278  * @param[in,out] band pointer to the band descriptor
279  * @param[in] avctx pointer to the AVCodecContext
280  * @return result code: 0 = OK, negative number = error
281  */
283  AVCodecContext *avctx)
284 {
285  int plane, band_num, indx, transform_id, scan_indx;
286  int i;
287 
288  plane = get_bits(&ctx->gb, 2);
289  band_num = get_bits(&ctx->gb, 4);
290  if (band->plane != plane || band->band_num != band_num) {
291  av_log(avctx, AV_LOG_ERROR, "Invalid band header sequence!\n");
292  return AVERROR_INVALIDDATA;
293  }
294 
295  band->is_empty = get_bits1(&ctx->gb);
296  if (!band->is_empty) {
297  int old_blk_size = band->blk_size;
298  /* skip header size
299  * If header size is not given, header size is 4 bytes. */
300  if (get_bits1(&ctx->gb))
301  skip_bits(&ctx->gb, 16);
302 
303  band->is_halfpel = get_bits(&ctx->gb, 2);
304  if (band->is_halfpel >= 2) {
305  av_log(avctx, AV_LOG_ERROR, "Invalid/unsupported mv resolution: %d!\n",
306  band->is_halfpel);
307  return AVERROR_INVALIDDATA;
308  }
309 #if IVI4_STREAM_ANALYSER
310  if (!band->is_halfpel)
311  ctx->uses_fullpel = 1;
312 #endif
313 
314  band->checksum_present = get_bits1(&ctx->gb);
315  if (band->checksum_present)
316  band->checksum = get_bits(&ctx->gb, 16);
317 
318  indx = get_bits(&ctx->gb, 2);
319  if (indx == 3) {
320  av_log(avctx, AV_LOG_ERROR, "Invalid block size!\n");
321  return AVERROR_INVALIDDATA;
322  }
323  band->mb_size = 16 >> indx;
324  band->blk_size = 8 >> (indx >> 1);
325 
326  band->inherit_mv = get_bits1(&ctx->gb);
327  band->inherit_qdelta = get_bits1(&ctx->gb);
328 
329  band->glob_quant = get_bits(&ctx->gb, 5);
330 
331  if (!get_bits1(&ctx->gb) || ctx->frame_type == FRAMETYPE_INTRA) {
332  transform_id = get_bits(&ctx->gb, 5);
333  if (transform_id >= FF_ARRAY_ELEMS(transforms) ||
334  !transforms[transform_id].inv_trans) {
335  avpriv_request_sample(avctx, "Transform %d", transform_id);
336  return AVERROR_PATCHWELCOME;
337  }
338  if ((transform_id >= 7 && transform_id <= 9) ||
339  transform_id == 17) {
340  avpriv_request_sample(avctx, "DCT transform");
341  return AVERROR_PATCHWELCOME;
342  }
343 
344  if (transform_id < 10 && band->blk_size < 8) {
345  av_log(avctx, AV_LOG_ERROR, "wrong transform size!\n");
346  return AVERROR_INVALIDDATA;
347  }
348 #if IVI4_STREAM_ANALYSER
349  if ((transform_id >= 0 && transform_id <= 2) || transform_id == 10)
350  ctx->uses_haar = 1;
351 #endif
352 
353  band->inv_transform = transforms[transform_id].inv_trans;
354  band->dc_transform = transforms[transform_id].dc_trans;
355  band->is_2d_trans = transforms[transform_id].is_2d_trans;
356 
357  if (transform_id < 10)
358  band->transform_size = 8;
359  else
360  band->transform_size = 4;
361 
362  if (band->blk_size != band->transform_size) {
363  av_log(avctx, AV_LOG_ERROR, "transform and block size mismatch (%d != %d)\n", band->transform_size, band->blk_size);
364  return AVERROR_INVALIDDATA;
365  }
366 
367  scan_indx = get_bits(&ctx->gb, 4);
368  if (scan_indx == 15) {
369  av_log(avctx, AV_LOG_ERROR, "Custom scan pattern encountered!\n");
370  return AVERROR_INVALIDDATA;
371  }
372  if (scan_indx > 4 && scan_indx < 10) {
373  if (band->blk_size != 4) {
374  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
375  return AVERROR_INVALIDDATA;
376  }
377  } else if (band->blk_size != 8) {
378  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
379  return AVERROR_INVALIDDATA;
380  }
381 
382  band->scan = scan_index_to_tab[scan_indx];
383  band->scan_size = band->blk_size;
384 
385  band->quant_mat = get_bits(&ctx->gb, 5);
387 
388  if (band->quant_mat == 31)
389  av_log(avctx, AV_LOG_ERROR,
390  "Custom quant matrix encountered!\n");
391  else
392  avpriv_request_sample(avctx, "Quantization matrix %d",
393  band->quant_mat);
394  band->quant_mat = -1;
395  return AVERROR_INVALIDDATA;
396  }
397  } else {
398  if (old_blk_size != band->blk_size) {
399  av_log(avctx, AV_LOG_ERROR,
400  "The band block size does not match the configuration "
401  "inherited\n");
402  return AVERROR_INVALIDDATA;
403  }
404  if (band->quant_mat < 0) {
405  av_log(avctx, AV_LOG_ERROR, "Invalid quant_mat inherited\n");
406  return AVERROR_INVALIDDATA;
407  }
408  }
409  if (quant_index_to_tab[band->quant_mat] > 4 && band->blk_size == 4) {
410  av_log(avctx, AV_LOG_ERROR, "Invalid quant matrix for 4x4 block encountered!\n");
411  band->quant_mat = 0;
412  return AVERROR_INVALIDDATA;
413  }
414  if (band->scan_size != band->blk_size) {
415  av_log(avctx, AV_LOG_ERROR, "mismatching scan table!\n");
416  return AVERROR_INVALIDDATA;
417  }
418  if (band->transform_size == 8 && band->blk_size < 8) {
419  av_log(avctx, AV_LOG_ERROR, "mismatching transform_size!\n");
420  return AVERROR_INVALIDDATA;
421  }
422 
423  /* decode block huffman codebook */
424  if (!get_bits1(&ctx->gb))
425  band->blk_vlc.tab = ctx->blk_vlc.tab;
426  else
427  if (ff_ivi_dec_huff_desc(&ctx->gb, 1, IVI_BLK_HUFF,
428  &band->blk_vlc, avctx))
429  return AVERROR_INVALIDDATA;
430 
431  /* select appropriate rvmap table for this band */
432  band->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
433 
434  /* decode rvmap probability corrections if any */
435  band->num_corr = 0; /* there is no corrections */
436  if (get_bits1(&ctx->gb)) {
437  band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */
438  if (band->num_corr > 61) {
439  av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n",
440  band->num_corr);
441  return AVERROR_INVALIDDATA;
442  }
443 
444  /* read correction pairs */
445  for (i = 0; i < band->num_corr * 2; i++)
446  band->corr[i] = get_bits(&ctx->gb, 8);
447  }
448  }
449 
450  if (band->blk_size == 8) {
452  band->inter_base = &ivi4_quant_8x8_inter[quant_index_to_tab[band->quant_mat]][0];
453  } else {
455  band->inter_base = &ivi4_quant_4x4_inter[quant_index_to_tab[band->quant_mat]][0];
456  }
457 
458  /* Indeo 4 doesn't use scale tables */
459  band->intra_scale = NULL;
460  band->inter_scale = NULL;
461 
462  align_get_bits(&ctx->gb);
463 
464  if (!band->scan) {
465  av_log(avctx, AV_LOG_ERROR, "band->scan not set\n");
466  return AVERROR_INVALIDDATA;
467  }
468 
469  return 0;
470 }
471 
472 
473 /**
474  * Decode information (block type, cbp, quant delta, motion vector)
475  * for all macroblocks in the current tile.
476  *
477  * @param[in,out] ctx pointer to the decoder context
478  * @param[in,out] band pointer to the band descriptor
479  * @param[in,out] tile pointer to the tile descriptor
480  * @param[in] avctx pointer to the AVCodecContext
481  * @return result code: 0 = OK, negative number = error
482  */
484  IVITile *tile, AVCodecContext *avctx)
485 {
486  int x, y, mv_x, mv_y, mv_delta, offs, mb_offset, blks_per_mb,
487  mv_scale, mb_type_bits, s;
488  IVIMbInfo *mb, *ref_mb;
489  int row_offset = band->mb_size * band->pitch;
490 
491  mb = tile->mbs;
492  ref_mb = tile->ref_mbs;
493  offs = tile->ypos * band->pitch + tile->xpos;
494 
495  blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
496  mb_type_bits = ctx->frame_type == FRAMETYPE_BIDIR ? 2 : 1;
497 
498  /* scale factor for motion vectors */
499  mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
500  mv_x = mv_y = 0;
501 
502  if (((tile->width + band->mb_size-1)/band->mb_size) * ((tile->height + band->mb_size-1)/band->mb_size) != tile->num_MBs) {
503  av_log(avctx, AV_LOG_ERROR, "num_MBs mismatch %d %d %d %d\n", tile->width, tile->height, band->mb_size, tile->num_MBs);
504  return -1;
505  }
506 
507  for (y = tile->ypos; y < tile->ypos + tile->height; y += band->mb_size) {
508  mb_offset = offs;
509 
510  for (x = tile->xpos; x < tile->xpos + tile->width; x += band->mb_size) {
511  mb->xpos = x;
512  mb->ypos = y;
513  mb->buf_offs = mb_offset;
514 
515  if (get_bits1(&ctx->gb)) {
516  if (ctx->frame_type == FRAMETYPE_INTRA) {
517  av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
518  return AVERROR_INVALIDDATA;
519  }
520  mb->type = 1; /* empty macroblocks are always INTER */
521  mb->cbp = 0; /* all blocks are empty */
522 
523  mb->q_delta = 0;
524  if (!band->plane && !band->band_num && ctx->in_q) {
525  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
526  IVI_VLC_BITS, 1);
527  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
528  }
529 
530  mb->mv_x = mb->mv_y = 0; /* no motion vector coded */
531  if (band->inherit_mv && ref_mb) {
532  /* motion vector inheritance */
533  if (mv_scale) {
534  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
535  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
536  } else {
537  mb->mv_x = ref_mb->mv_x;
538  mb->mv_y = ref_mb->mv_y;
539  }
540  }
541  } else {
542  if (band->inherit_mv) {
543  /* copy mb_type from corresponding reference mb */
544  if (!ref_mb) {
545  av_log(avctx, AV_LOG_ERROR, "ref_mb unavailable\n");
546  return AVERROR_INVALIDDATA;
547  }
548  mb->type = ref_mb->type;
549  } else if (ctx->frame_type == FRAMETYPE_INTRA ||
550  ctx->frame_type == FRAMETYPE_INTRA1) {
551  mb->type = 0; /* mb_type is always INTRA for intra-frames */
552  } else {
553  mb->type = get_bits(&ctx->gb, mb_type_bits);
554  }
555 
556  mb->cbp = get_bits(&ctx->gb, blks_per_mb);
557 
558  mb->q_delta = 0;
559  if (band->inherit_qdelta) {
560  if (ref_mb) mb->q_delta = ref_mb->q_delta;
561  } else if (mb->cbp || (!band->plane && !band->band_num &&
562  ctx->in_q)) {
563  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
564  IVI_VLC_BITS, 1);
565  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
566  }
567 
568  if (!mb->type) {
569  mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */
570  } else {
571  if (band->inherit_mv) {
572  if (ref_mb)
573  /* motion vector inheritance */
574  if (mv_scale) {
575  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
576  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
577  } else {
578  mb->mv_x = ref_mb->mv_x;
579  mb->mv_y = ref_mb->mv_y;
580  }
581  } else {
582  /* decode motion vector deltas */
583  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
584  IVI_VLC_BITS, 1);
585  mv_y += IVI_TOSIGNED(mv_delta);
586  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
587  IVI_VLC_BITS, 1);
588  mv_x += IVI_TOSIGNED(mv_delta);
589  mb->mv_x = mv_x;
590  mb->mv_y = mv_y;
591  }
592  }
593  }
594 
595  s= band->is_halfpel;
596  if (mb->type)
597  if ( x + (mb->mv_x >>s) + (y+ (mb->mv_y >>s))*band->pitch < 0 ||
598  x + ((mb->mv_x+s)>>s) + band->mb_size - 1
599  + (y+band->mb_size - 1 +((mb->mv_y+s)>>s))*band->pitch > band->bufsize -1) {
600  av_log(avctx, AV_LOG_ERROR, "motion vector %d %d outside reference\n", x*s + mb->mv_x, y*s + mb->mv_y);
601  return AVERROR_INVALIDDATA;
602  }
603 
604  mb++;
605  if (ref_mb)
606  ref_mb++;
607  mb_offset += band->mb_size;
608  }
609 
610  offs += row_offset;
611  }
612 
613  align_get_bits(&ctx->gb);
614 
615  return 0;
616 }
617 
618 
619 /**
620  * Rearrange decoding and reference buffers.
621  *
622  * @param[in,out] ctx pointer to the decoder context
623  */
625 {
626  switch (ctx->prev_frame_type) {
627  case FRAMETYPE_INTRA:
628  case FRAMETYPE_INTRA1:
629  case FRAMETYPE_INTER:
630  ctx->buf_switch ^= 1;
631  ctx->dst_buf = ctx->buf_switch;
632  ctx->ref_buf = ctx->buf_switch ^ 1;
633  break;
635  break;
636  }
637 
638  switch (ctx->frame_type) {
639  case FRAMETYPE_INTRA:
640  case FRAMETYPE_INTRA1:
641  ctx->buf_switch = 0;
642  /* FALLTHROUGH */
643  case FRAMETYPE_INTER:
644  ctx->dst_buf = ctx->buf_switch;
645  ctx->ref_buf = ctx->buf_switch ^ 1;
646  break;
649  case FRAMETYPE_NULL_LAST:
650  break;
651  }
652 }
653 
654 
656 {
657  return ctx->frame_type < FRAMETYPE_NULL_FIRST;
658 }
659 
660 
662 {
663  IVI45DecContext *ctx = avctx->priv_data;
664 
666 
667  /* copy rvmap tables in our context so we can apply changes to them */
668  memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
669 
670  /* Force allocation of the internal buffers */
671  /* during picture header decoding. */
672  ctx->pic_conf.pic_width = 0;
673  ctx->pic_conf.pic_height = 0;
674 
675  avctx->pix_fmt = AV_PIX_FMT_YUV410P;
676 
682 
683  return 0;
684 }
685 
686 
688  .name = "indeo4",
689  .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 4"),
690  .type = AVMEDIA_TYPE_VIDEO,
691  .id = AV_CODEC_ID_INDEO4,
692  .priv_data_size = sizeof(IVI45DecContext),
693  .init = decode_init,
696  .capabilities = CODEC_CAP_DR1,
697 };
int is_empty
= 1 if this band doesn&#39;t contain any data
Definition: ivi_common.h:142
uint32_t data_size
size of the frame data in bytes from picture header
Definition: ivi_common.h:205
uint8_t type
macroblock type: 0 - INTRA, 1 - INTER
Definition: ivi_common.h:102
int num_MBs
number of macroblocks in this tile
Definition: ivi_common.h:121
static const uint16_t ivi4_quant_8x8_intra[9][64]
Indeo 4 dequant tables.
Definition: indeo4data.h:89
static int scale_tile_size(int def_size, int size_factor)
Definition: indeo4.c:105
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:668
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
#define AVERROR_PATCHWELCOME
av_cold int ff_ivi_decode_close(AVCodecContext *avctx)
Close Indeo5 decoder and clean up its context.
Definition: ivi_common.c:1078
static av_always_inline void mv_scale(Mv *dst, Mv *src, int td, int tb)
Definition: hevc_mvs.c:139
This file contains data needed for the Indeo 4 decoder.
InvTransformPtr * inv_transform
Definition: ivi_common.h:162
#define IVI4_PIC_SIZE_ESC
Definition: indeo4.c:50
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_common.c:198
static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
Decode Indeo 4 picture header.
Definition: indeo4.c:117
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:255
static int decode_plane_subdivision(GetBitContext *gb)
Decode subdivision of a plane.
Definition: indeo4.c:88
int(* decode_pic_hdr)(struct IVI45DecContext *ctx, AVCodecContext *avctx)
Definition: ivi_common.h:244
static void skip_bits_long(GetBitContext *s, int n)
Definition: get_bits.h:212
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
empty frame with no data
Definition: indeo4.c:46
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
int(* decode_mb_info)(struct IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx)
Definition: ivi_common.h:246
int dst_buf
buffer index for the currently decoded frame
Definition: ivi_common.h:219
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
DSP functions (inverse transforms, motion compensations, wavelet recompostion) for Indeo Video Intera...
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1342
int is_halfpel
precision of the motion compensation: 0 - fullpel, 1 - halfpel
Definition: ivi_common.h:145
uint8_t chroma_bands
Definition: ivi_common.h:195
int plane
plane number this band belongs to
Definition: ivi_common.h:131
av_dlog(ac->avr,"%d samples - audio_convert: %s to %s (%s)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic?ac->func_descr_generic:ac->func_descr)
int bufsize
band buffer size in bytes
Definition: ivi_common.h:168
IVIPicConfig pic_conf
Definition: ivi_common.h:215
AVCodec.
Definition: avcodec.h:2922
#define av_cold
Definition: avcodec.h:653
int quant_mat
dequant matrix index
Definition: ivi_common.h:149
intra frame with slightly different bitstream coding
Definition: indeo4.c:42
av_cold int ff_ivi_init_planes(IVIPlaneDesc *planes, const IVIPicConfig *cfg)
Initialize planes (prepares descriptors, allocates buffers etc).
Definition: ivi_common.c:276
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_common.h:194
VLC * tab
index of one of the predefined tables or &quot;7&quot; for custom one
Definition: ivi_common.h:54
#define mb
uint8_t pic_glob_quant
Definition: ivi_common.h:229
const uint16_t * inter_base
quantization matrix for inter blocks
Definition: ivi_common.h:170
uint16_t pic_height
Definition: ivi_common.h:189
static const uint16_t ivi4_common_pic_sizes[14]
standard picture dimensions
Definition: indeo4data.h:37
const char * name
Name of the codec implementation.
Definition: avcodec.h:2929
int inherit_mv
tells if motion vector is inherited from reference macroblock
Definition: ivi_common.h:146
static struct @69 transforms[18]
empty frame with no data
Definition: indeo4.c:47
static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Decode Indeo 4 band header.
Definition: indeo4.c:282
uint16_t tile_height
Definition: ivi_common.h:193
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:742
GetBitContext gb
Definition: ivi_common.h:199
uint16_t chroma_width
Definition: ivi_common.h:190
int pitch
pitch associated with the buffers above
Definition: ivi_common.h:141
static const uint16_t ivi4_quant_8x8_inter[9][64]
Definition: indeo4data.h:182
uint8_t cbp
coded block pattern
Definition: ivi_common.h:103
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_common.h:213
bitstream reader API header.
uint16_t pic_width
Definition: ivi_common.h:188
static const uint16_t ivi4_quant_4x4_inter[5][16]
Definition: indeo4data.h:308
IVIPlaneDesc planes[3]
color planes
Definition: ivi_common.h:216
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_common.h:169
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_common.h:230
int blk_size
block size
Definition: ivi_common.h:144
const RVMapDesc ff_ivi_rvmap_tabs[9]
Run-value (RLE) tables.
Definition: ivi_common.c:1141
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: avcodec.h:4147
uint8_t corr[61 *2]
rvmap correction pairs
Definition: ivi_common.h:157
static int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
compare some properties of two pictures
Definition: ivi_common.h:255
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_common.h:200
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 IVI_VLC_BITS
max number of bits of the ivi&#39;s huffman codes
Definition: ivi_common.h:36
uint8_t in_q
flag for explicitly stored quantiser delta
Definition: ivi_common.h:228
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:151
This file contains structures and macros shared by both Indeo4 and Indeo5 decoders.
DCTransformPtr * dc_trans
Definition: indeo4.c:55
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_common.h:220
DCTransformPtr * dc_transform
Definition: ivi_common.h:164
static const uint8_t * scan_index_to_tab[15]
Definition: indeo4data.h:63
av_cold void ff_ivi_init_static_vlc(void)
Initialize static codes used for macroblock and block decoding.
Definition: ivi_common.c:151
Libavcodec external API header.
bidirectional frame
Definition: indeo4.c:44
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_common.h:147
#define FF_ARRAY_ELEMS(a)
Definition: avcodec.h:929
uint32_t frame_num
Definition: ivi_common.h:202
int(* decode_band_hdr)(struct IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Definition: ivi_common.h:245
int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ivi_common.c:975
float y
int is_2d_trans
Definition: indeo4.c:56
IVIMbInfo * mbs
array of macroblock descriptors
Definition: ivi_common.h:122
static void switch_buffers(IVI45DecContext *ctx)
Rearrange decoding and reference buffers.
Definition: indeo4.c:624
const uint8_t * inter_scale
quantization coefficient for inter blocks
Definition: ivi_common.h:172
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:550
uint16_t chroma_height
Definition: ivi_common.h:191
int8_t q_delta
quant delta
Definition: ivi_common.h:104
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
uint16_t tile_width
Definition: ivi_common.h:192
int ypos
Definition: ivi_common.h:115
IVIHuffTab mb_vlc
current macroblock table descriptor
Definition: ivi_common.h:223
int is_2d_trans
1 indicates that the two-dimensional inverse transform is used
Definition: ivi_common.h:165
droppable P-frame
Definition: indeo4.c:45
int glob_quant
quant base for this band
Definition: ivi_common.h:150
int height
Definition: ivi_common.h:117
main external API structure.
Definition: avcodec.h:1146
static void close(AVCodecParserContext *s)
Definition: h264_parser.c:538
int num_corr
number of correction entries
Definition: ivi_common.h:156
information for Indeo tile
Definition: ivi_common.h:113
int(* is_nonnull_frame)(struct IVI45DecContext *ctx)
Definition: ivi_common.h:248
int buf_switch
used to switch between three buffers
Definition: ivi_common.h:218
av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height)
Initialize tile and macroblock descriptors.
Definition: ivi_common.c:386
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:299
uint8_t in_imf
Definition: ivi_common.h:227
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:292
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_common.h:247
IVIBandDesc * bands
array of band descriptors
Definition: ivi_common.h:183
int32_t checksum
for debug purposes
Definition: ivi_common.h:166
int rvmap_sel
rvmap table selector
Definition: ivi_common.h:158
int8_t mv_x
motion vector (x component)
Definition: ivi_common.h:105
int8_t mv_y
motion vector (y component)
Definition: ivi_common.h:106
int mb_size
macroblock size
Definition: ivi_common.h:143
IVIMbInfo * ref_mbs
ptr to the macroblock descriptors of the reference tile
Definition: ivi_common.h:123
int xpos
Definition: ivi_common.h:114
void * priv_data
Definition: avcodec.h:1182
IVIHuffTab blk_vlc
current block table descriptor
Definition: ivi_common.h:224
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_common.h:99
int band_num
band number
Definition: ivi_common.h:132
InvTransformPtr * inv_trans
Definition: indeo4.c:54
int transform_size
Definition: ivi_common.h:163
void( InvTransformPtr)(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
Declare inverse transform function types.
Definition: ivi_common.h:78
static int is_nonnull_frame(IVI45DecContext *ctx)
Definition: indeo4.c:655
Huffman table is used for coding macroblocks.
Definition: ivi_common.h:63
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:483
const uint8_t * scan
ptr to the scan pattern
Definition: ivi_common.h:151
int width
Definition: ivi_common.h:116
static av_cold int decode_init(AVCodecContext *avctx)
Definition: indeo4.c:661
#define AVERROR_INVALIDDATA
int checksum_present
Definition: ivi_common.h:167
VLC_TYPE(* table)[2]
code, bits
Definition: get_bits.h:65
static int ivi_scale_mv(int mv, int mv_scale)
scale motion vector
Definition: ivi_common.h:274
non-droppable P-frame
Definition: indeo4.c:43
int transp_status
transparency mode status: 1 - enabled
Definition: ivi_common.h:207
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:444
#define AVERROR(e)
int16_t ypos
Definition: ivi_common.h:100
int prev_frame_type
frame type of the previous frame
Definition: ivi_common.h:204
information for Indeo macroblock (16x16, 8x8 or 4x4)
Definition: ivi_common.h:98
IVIHuffTab blk_vlc
vlc table for decoding block data
Definition: ivi_common.h:154
int scan_size
size of the scantable
Definition: ivi_common.h:152
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_common.h:171
static int decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: crystalhd.c:868
uint32_t buf_offs
address in the output buffer for this mb
Definition: ivi_common.h:101
#define IVI_TOSIGNED(val)
convert unsigned values into signed ones (the sign is in the LSB)
Definition: ivi_common.h:271
information for Indeo wavelet band
Definition: ivi_common.h:130
void( DCTransformPtr)(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
Definition: ivi_common.h:79
planar YUV 4:1:0, 9bpp, (1 Cr &amp; Cb sample per 4x4 Y samples)
Definition: avcodec.h:4540
uint8_t rvmap_sel
Definition: ivi_common.h:226
AVCodec ff_indeo4_decoder
Definition: indeo4.c:687
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