FFmpeg
indeo5.c
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1 /*
2  * Indeo Video Interactive v5 compatible decoder
3  * Copyright (c) 2009 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 5 decoder
25  *
26  * Indeo5 data is usually transported within .avi or .mov files.
27  * Known FOURCCs: 'IV50'
28  */
29 
30 #define BITSTREAM_READER_LE
31 #include "avcodec.h"
32 #include "get_bits.h"
33 #include "internal.h"
34 #include "ivi.h"
35 #include "ivi_dsp.h"
36 #include "indeo5data.h"
37 
38 /**
39  * Indeo5 frame types.
40  */
41 enum {
43  FRAMETYPE_INTER = 1, ///< non-droppable P-frame
44  FRAMETYPE_INTER_SCAL = 2, ///< droppable P-frame used in the scalability mode
45  FRAMETYPE_INTER_NOREF = 3, ///< droppable P-frame
46  FRAMETYPE_NULL = 4 ///< empty frame with no data
47 };
48 
49 #define IVI5_PIC_SIZE_ESC 15
50 
51 /**
52  * Decode Indeo5 GOP (Group of pictures) header.
53  * This header is present in key frames only.
54  * It defines parameters for all frames in a GOP.
55  *
56  * @param[in,out] ctx ptr to the decoder context
57  * @param[in] avctx ptr to the AVCodecContext
58  * @return result code: 0 = OK, -1 = error
59  */
61 {
62  int result, i, p, tile_size, pic_size_indx, mb_size, blk_size, is_scalable;
63  int quant_mat, blk_size_changed = 0;
64  IVIBandDesc *band, *band1, *band2;
65  IVIPicConfig pic_conf;
66 
67  ctx->gop_flags = get_bits(&ctx->gb, 8);
68 
69  ctx->gop_hdr_size = (ctx->gop_flags & 1) ? get_bits(&ctx->gb, 16) : 0;
70 
71  if (ctx->gop_flags & IVI5_IS_PROTECTED)
72  ctx->lock_word = get_bits_long(&ctx->gb, 32);
73 
74  tile_size = (ctx->gop_flags & 0x40) ? 64 << get_bits(&ctx->gb, 2) : 0;
75  if (tile_size > 256) {
76  av_log(avctx, AV_LOG_ERROR, "Invalid tile size: %d\n", tile_size);
77  return AVERROR_INVALIDDATA;
78  }
79 
80  /* decode number of wavelet bands */
81  /* num_levels * 3 + 1 */
82  pic_conf.luma_bands = get_bits(&ctx->gb, 2) * 3 + 1;
83  pic_conf.chroma_bands = get_bits1(&ctx->gb) * 3 + 1;
84  is_scalable = pic_conf.luma_bands != 1 || pic_conf.chroma_bands != 1;
85  if (is_scalable && (pic_conf.luma_bands != 4 || pic_conf.chroma_bands != 1)) {
86  av_log(avctx, AV_LOG_ERROR, "Scalability: unsupported subdivision! Luma bands: %d, chroma bands: %d\n",
87  pic_conf.luma_bands, pic_conf.chroma_bands);
88  return AVERROR_INVALIDDATA;
89  }
90 
91  pic_size_indx = get_bits(&ctx->gb, 4);
92  if (pic_size_indx == IVI5_PIC_SIZE_ESC) {
93  pic_conf.pic_height = get_bits(&ctx->gb, 13);
94  pic_conf.pic_width = get_bits(&ctx->gb, 13);
95  } else {
96  pic_conf.pic_height = ivi5_common_pic_sizes[pic_size_indx * 2 + 1] << 2;
97  pic_conf.pic_width = ivi5_common_pic_sizes[pic_size_indx * 2 ] << 2;
98  }
99 
100  if (ctx->gop_flags & 2) {
101  avpriv_report_missing_feature(avctx, "YV12 picture format");
102  return AVERROR_PATCHWELCOME;
103  }
104 
105  pic_conf.chroma_height = (pic_conf.pic_height + 3) >> 2;
106  pic_conf.chroma_width = (pic_conf.pic_width + 3) >> 2;
107 
108  if (!tile_size) {
109  pic_conf.tile_height = pic_conf.pic_height;
110  pic_conf.tile_width = pic_conf.pic_width;
111  } else {
112  pic_conf.tile_height = pic_conf.tile_width = tile_size;
113  }
114 
115  /* check if picture layout was changed and reallocate buffers */
116  if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf) || ctx->gop_invalid) {
117  result = ff_ivi_init_planes(avctx, ctx->planes, &pic_conf, 0);
118  if (result < 0) {
119  av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
120  return result;
121  }
122  ctx->pic_conf = pic_conf;
123  ctx->is_scalable = is_scalable;
124  blk_size_changed = 1; /* force reallocation of the internal structures */
125  }
126 
127  for (p = 0; p <= 1; p++) {
128  for (i = 0; i < (!p ? pic_conf.luma_bands : pic_conf.chroma_bands); i++) {
129  band = &ctx->planes[p].bands[i];
130 
131  band->is_halfpel = get_bits1(&ctx->gb);
132 
133  mb_size = get_bits1(&ctx->gb);
134  blk_size = 8 >> get_bits1(&ctx->gb);
135  mb_size = blk_size << !mb_size;
136 
137  if (p==0 && blk_size==4) {
138  av_log(avctx, AV_LOG_ERROR, "4x4 luma blocks are unsupported!\n");
139  return AVERROR_PATCHWELCOME;
140  }
141 
142  blk_size_changed = mb_size != band->mb_size || blk_size != band->blk_size;
143  if (blk_size_changed) {
144  band->mb_size = mb_size;
145  band->blk_size = blk_size;
146  }
147 
148  if (get_bits1(&ctx->gb)) {
149  avpriv_report_missing_feature(avctx, "Extended transform info");
150  return AVERROR_PATCHWELCOME;
151  }
152 
153  /* select transform function and scan pattern according to plane and band number */
154  switch ((p << 2) + i) {
155  case 0:
158  band->scan = ff_zigzag_direct;
159  band->transform_size = 8;
160  break;
161 
162  case 1:
166  band->transform_size = 8;
167  break;
168 
169  case 2:
173  band->transform_size = 8;
174  break;
175 
176  case 3:
180  band->transform_size = 8;
181  break;
182 
183  case 4:
187  band->transform_size = 4;
188  break;
189  }
190 
193 
194  if (band->transform_size != band->blk_size) {
195  av_log(avctx, AV_LOG_ERROR, "transform and block size mismatch (%d != %d)\n", band->transform_size, band->blk_size);
196  return AVERROR_INVALIDDATA;
197  }
198 
199  /* select dequant matrix according to plane and band number */
200  if (!p) {
201  quant_mat = (pic_conf.luma_bands > 1) ? i+1 : 0;
202  } else {
203  quant_mat = 5;
204  }
205 
206  if (band->blk_size == 8) {
207  if(quant_mat >= 5){
208  av_log(avctx, AV_LOG_ERROR, "quant_mat %d too large!\n", quant_mat);
209  return -1;
210  }
211  band->intra_base = &ivi5_base_quant_8x8_intra[quant_mat][0];
212  band->inter_base = &ivi5_base_quant_8x8_inter[quant_mat][0];
213  band->intra_scale = &ivi5_scale_quant_8x8_intra[quant_mat][0];
214  band->inter_scale = &ivi5_scale_quant_8x8_inter[quant_mat][0];
215  } else {
220  }
221 
222  if (get_bits(&ctx->gb, 2)) {
223  av_log(avctx, AV_LOG_ERROR, "End marker missing!\n");
224  return AVERROR_INVALIDDATA;
225  }
226  }
227  }
228 
229  /* copy chroma parameters into the 2nd chroma plane */
230  for (i = 0; i < pic_conf.chroma_bands; i++) {
231  band1 = &ctx->planes[1].bands[i];
232  band2 = &ctx->planes[2].bands[i];
233 
234  band2->width = band1->width;
235  band2->height = band1->height;
236  band2->mb_size = band1->mb_size;
237  band2->blk_size = band1->blk_size;
238  band2->is_halfpel = band1->is_halfpel;
239  band2->intra_base = band1->intra_base;
240  band2->inter_base = band1->inter_base;
241  band2->intra_scale = band1->intra_scale;
242  band2->inter_scale = band1->inter_scale;
243  band2->scan = band1->scan;
244  band2->inv_transform = band1->inv_transform;
245  band2->dc_transform = band1->dc_transform;
246  band2->is_2d_trans = band1->is_2d_trans;
247  band2->transform_size= band1->transform_size;
248  }
249 
250  /* reallocate internal structures if needed */
251  if (blk_size_changed) {
252  result = ff_ivi_init_tiles(ctx->planes, pic_conf.tile_width,
253  pic_conf.tile_height);
254  if (result < 0) {
255  av_log(avctx, AV_LOG_ERROR,
256  "Couldn't reallocate internal structures!\n");
257  return result;
258  }
259  }
260 
261  if (ctx->gop_flags & 8) {
262  if (get_bits(&ctx->gb, 3)) {
263  av_log(avctx, AV_LOG_ERROR, "Alignment bits are not zero!\n");
264  return AVERROR_INVALIDDATA;
265  }
266 
267  if (get_bits1(&ctx->gb))
268  skip_bits(&ctx->gb, 24); /* skip transparency fill color */
269  }
270 
271  align_get_bits(&ctx->gb);
272 
273  skip_bits(&ctx->gb, 23); /* FIXME: unknown meaning */
274 
275  /* skip GOP extension if any */
276  if (get_bits1(&ctx->gb)) {
277  do {
278  i = get_bits(&ctx->gb, 16);
279  } while (i & 0x8000);
280  }
281 
282  align_get_bits(&ctx->gb);
283 
284  return 0;
285 }
286 
287 
288 /**
289  * Skip a header extension.
290  *
291  * @param[in,out] gb the GetBit context
292  */
293 static inline int skip_hdr_extension(GetBitContext *gb)
294 {
295  int i, len;
296 
297  do {
298  len = get_bits(gb, 8);
299  if (8*len > get_bits_left(gb))
300  return AVERROR_INVALIDDATA;
301  for (i = 0; i < len; i++) skip_bits(gb, 8);
302  } while(len);
303 
304  return 0;
305 }
306 
307 
308 /**
309  * Decode Indeo5 picture header.
310  *
311  * @param[in,out] ctx ptr to the decoder context
312  * @param[in] avctx ptr to the AVCodecContext
313  * @return result code: 0 = OK, -1 = error
314  */
316 {
317  int ret;
318 
319  if (get_bits(&ctx->gb, 5) != 0x1F) {
320  av_log(avctx, AV_LOG_ERROR, "Invalid picture start code!\n");
321  return AVERROR_INVALIDDATA;
322  }
323 
324  ctx->prev_frame_type = ctx->frame_type;
325  ctx->frame_type = get_bits(&ctx->gb, 3);
326  if (ctx->frame_type >= 5) {
327  av_log(avctx, AV_LOG_ERROR, "Invalid frame type: %d \n", ctx->frame_type);
329  return AVERROR_INVALIDDATA;
330  }
331 
332  ctx->frame_num = get_bits(&ctx->gb, 8);
333 
334  if (ctx->frame_type == FRAMETYPE_INTRA) {
335  if ((ret = decode_gop_header(ctx, avctx)) < 0) {
336  av_log(avctx, AV_LOG_ERROR, "Invalid GOP header, skipping frames.\n");
337  ctx->gop_invalid = 1;
338  return ret;
339  }
340  ctx->gop_invalid = 0;
341  }
342 
343  if (ctx->frame_type == FRAMETYPE_INTER_SCAL && !ctx->is_scalable) {
344  av_log(avctx, AV_LOG_ERROR, "Scalable inter frame in non scalable stream\n");
346  return AVERROR_INVALIDDATA;
347  }
348 
349  if (ctx->frame_type != FRAMETYPE_NULL) {
350  ctx->frame_flags = get_bits(&ctx->gb, 8);
351 
352  ctx->pic_hdr_size = (ctx->frame_flags & 1) ? get_bits(&ctx->gb, 24) : 0;
353 
354  ctx->checksum = (ctx->frame_flags & 0x10) ? get_bits(&ctx->gb, 16) : 0;
355 
356  /* skip unknown extension if any */
357  if (ctx->frame_flags & 0x20)
358  skip_hdr_extension(&ctx->gb); /* XXX: untested */
359 
360  /* decode macroblock huffman codebook */
361  ret = ff_ivi_dec_huff_desc(&ctx->gb, ctx->frame_flags & 0x40,
362  IVI_MB_HUFF, &ctx->mb_vlc, avctx);
363  if (ret < 0)
364  return ret;
365 
366  skip_bits(&ctx->gb, 3); /* FIXME: unknown meaning! */
367  }
368 
369  align_get_bits(&ctx->gb);
370 
371  return 0;
372 }
373 
374 
375 /**
376  * Decode Indeo5 band header.
377  *
378  * @param[in,out] ctx ptr to the decoder context
379  * @param[in,out] band ptr to the band descriptor
380  * @param[in] avctx ptr to the AVCodecContext
381  * @return result code: 0 = OK, -1 = error
382  */
384  AVCodecContext *avctx)
385 {
386  int i, ret;
387  uint8_t band_flags;
388 
389  band_flags = get_bits(&ctx->gb, 8);
390 
391  if (band_flags & 1) {
392  band->is_empty = 1;
393  return 0;
394  }
395 
396  band->data_size = (ctx->frame_flags & 0x80) ? get_bits(&ctx->gb, 24) : 0;
397 
398  band->inherit_mv = band_flags & 2;
399  band->inherit_qdelta = band_flags & 8;
400  band->qdelta_present = band_flags & 4;
401  if (!band->qdelta_present) band->inherit_qdelta = 1;
402 
403  /* decode rvmap probability corrections if any */
404  band->num_corr = 0; /* there are no corrections */
405  if (band_flags & 0x10) {
406  band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */
407  if (band->num_corr > 61) {
408  av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n",
409  band->num_corr);
410  return AVERROR_INVALIDDATA;
411  }
412 
413  /* read correction pairs */
414  for (i = 0; i < band->num_corr * 2; i++)
415  band->corr[i] = get_bits(&ctx->gb, 8);
416  }
417 
418  /* select appropriate rvmap table for this band */
419  band->rvmap_sel = (band_flags & 0x40) ? get_bits(&ctx->gb, 3) : 8;
420 
421  /* decode block huffman codebook */
422  ret = ff_ivi_dec_huff_desc(&ctx->gb, band_flags & 0x80, IVI_BLK_HUFF,
423  &band->blk_vlc, avctx);
424  if (ret < 0)
425  return ret;
426 
427  band->checksum_present = get_bits1(&ctx->gb);
428  if (band->checksum_present)
429  band->checksum = get_bits(&ctx->gb, 16);
430 
431  band->glob_quant = get_bits(&ctx->gb, 5);
432 
433  /* skip unknown extension if any */
434  if (band_flags & 0x20) { /* XXX: untested */
435  align_get_bits(&ctx->gb);
436  skip_hdr_extension(&ctx->gb);
437  }
438 
439  align_get_bits(&ctx->gb);
440 
441  return 0;
442 }
443 
444 
445 /**
446  * Decode info (block type, cbp, quant delta, motion vector)
447  * for all macroblocks in the current tile.
448  *
449  * @param[in,out] ctx ptr to the decoder context
450  * @param[in,out] band ptr to the band descriptor
451  * @param[in,out] tile ptr to the tile descriptor
452  * @param[in] avctx ptr to the AVCodecContext
453  * @return result code: 0 = OK, -1 = error
454  */
456  IVITile *tile, AVCodecContext *avctx)
457 {
458  int x, y, mv_x, mv_y, mv_delta, offs, mb_offset,
459  mv_scale, blks_per_mb, s;
460  IVIMbInfo *mb, *ref_mb;
461  int row_offset = band->mb_size * band->pitch;
462 
463  mb = tile->mbs;
464  ref_mb = tile->ref_mbs;
465  offs = tile->ypos * band->pitch + tile->xpos;
466 
467  if (!ref_mb &&
468  ((band->qdelta_present && band->inherit_qdelta) || band->inherit_mv))
469  return AVERROR_INVALIDDATA;
470 
471  if (tile->num_MBs != IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size)) {
472  av_log(avctx, AV_LOG_ERROR, "Allocated tile size %d mismatches parameters %d\n",
473  tile->num_MBs, IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size));
474  return AVERROR_INVALIDDATA;
475  }
476 
477  /* scale factor for motion vectors */
478  mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
479  mv_x = mv_y = 0;
480 
481  for (y = tile->ypos; y < (tile->ypos + tile->height); y += band->mb_size) {
482  mb_offset = offs;
483 
484  for (x = tile->xpos; x < (tile->xpos + tile->width); x += band->mb_size) {
485  mb->xpos = x;
486  mb->ypos = y;
487  mb->buf_offs = mb_offset;
488 
489  if (get_bits1(&ctx->gb)) {
490  if (ctx->frame_type == FRAMETYPE_INTRA) {
491  av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
492  return AVERROR_INVALIDDATA;
493  }
494  mb->type = 1; /* empty macroblocks are always INTER */
495  mb->cbp = 0; /* all blocks are empty */
496 
497  mb->q_delta = 0;
498  if (!band->plane && !band->band_num && (ctx->frame_flags & 8)) {
499  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
500  IVI_VLC_BITS, 1);
501  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
502  }
503 
504  mb->mv_x = mb->mv_y = 0; /* no motion vector coded */
505  if (band->inherit_mv && ref_mb){
506  /* motion vector inheritance */
507  if (mv_scale) {
508  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
509  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
510  } else {
511  mb->mv_x = ref_mb->mv_x;
512  mb->mv_y = ref_mb->mv_y;
513  }
514  }
515  } else {
516  if (band->inherit_mv && ref_mb) {
517  mb->type = ref_mb->type; /* copy mb_type from corresponding reference mb */
518  } else if (ctx->frame_type == FRAMETYPE_INTRA) {
519  mb->type = 0; /* mb_type is always INTRA for intra-frames */
520  } else {
521  mb->type = get_bits1(&ctx->gb);
522  }
523 
524  blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
525  mb->cbp = get_bits(&ctx->gb, blks_per_mb);
526 
527  mb->q_delta = 0;
528  if (band->qdelta_present) {
529  if (band->inherit_qdelta) {
530  if (ref_mb) mb->q_delta = ref_mb->q_delta;
531  } else if (mb->cbp || (!band->plane && !band->band_num &&
532  (ctx->frame_flags & 8))) {
533  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
534  IVI_VLC_BITS, 1);
535  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
536  }
537  }
538 
539  if (!mb->type) {
540  mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */
541  } else {
542  if (band->inherit_mv && ref_mb){
543  /* motion vector inheritance */
544  if (mv_scale) {
545  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
546  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
547  } else {
548  mb->mv_x = ref_mb->mv_x;
549  mb->mv_y = ref_mb->mv_y;
550  }
551  } else {
552  /* decode motion vector deltas */
553  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
554  IVI_VLC_BITS, 1);
555  mv_y += IVI_TOSIGNED(mv_delta);
556  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
557  IVI_VLC_BITS, 1);
558  mv_x += IVI_TOSIGNED(mv_delta);
559  mb->mv_x = mv_x;
560  mb->mv_y = mv_y;
561  }
562  }
563  }
564 
565  s= band->is_halfpel;
566  if (mb->type)
567  if ( x + (mb->mv_x >>s) + (y+ (mb->mv_y >>s))*band->pitch < 0 ||
568  x + ((mb->mv_x+s)>>s) + band->mb_size - 1
569  + (y+band->mb_size - 1 +((mb->mv_y+s)>>s))*band->pitch > band->bufsize - 1) {
570  av_log(avctx, AV_LOG_ERROR, "motion vector %d %d outside reference\n", x*s + mb->mv_x, y*s + mb->mv_y);
571  return AVERROR_INVALIDDATA;
572  }
573 
574  mb++;
575  if (ref_mb)
576  ref_mb++;
577  mb_offset += band->mb_size;
578  }
579 
580  offs += row_offset;
581  }
582 
583  align_get_bits(&ctx->gb);
584 
585  return 0;
586 }
587 
588 
589 /**
590  * Switch buffers.
591  *
592  * @param[in,out] ctx ptr to the decoder context
593  */
595 {
596  switch (ctx->prev_frame_type) {
597  case FRAMETYPE_INTRA:
598  case FRAMETYPE_INTER:
599  ctx->buf_switch ^= 1;
600  ctx->dst_buf = ctx->buf_switch;
601  ctx->ref_buf = ctx->buf_switch ^ 1;
602  break;
604  if (!ctx->inter_scal) {
605  ctx->ref2_buf = 2;
606  ctx->inter_scal = 1;
607  }
608  FFSWAP(int, ctx->dst_buf, ctx->ref2_buf);
609  ctx->ref_buf = ctx->ref2_buf;
610  break;
612  break;
613  }
614 
615  switch (ctx->frame_type) {
616  case FRAMETYPE_INTRA:
617  ctx->buf_switch = 0;
618  /* FALLTHROUGH */
619  case FRAMETYPE_INTER:
620  ctx->inter_scal = 0;
621  ctx->dst_buf = ctx->buf_switch;
622  ctx->ref_buf = ctx->buf_switch ^ 1;
623  break;
626  case FRAMETYPE_NULL:
627  break;
628  }
629 }
630 
631 
633 {
634  return ctx->frame_type != FRAMETYPE_NULL;
635 }
636 
637 
638 /**
639  * Initialize Indeo5 decoder.
640  */
642 {
643  IVI45DecContext *ctx = avctx->priv_data;
644  int result;
645 
646  ctx->gop_invalid = 1;
647 
649 
650  /* copy rvmap tables in our context so we can apply changes to them */
651  memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
652 
653  /* set the initial picture layout according to the basic profile:
654  there is only one band per plane (no scalability), only one tile (no local decoding)
655  and picture format = YVU9 */
656  ctx->pic_conf.pic_width = avctx->width;
657  ctx->pic_conf.pic_height = avctx->height;
658  ctx->pic_conf.chroma_width = (avctx->width + 3) >> 2;
659  ctx->pic_conf.chroma_height = (avctx->height + 3) >> 2;
660  ctx->pic_conf.tile_width = avctx->width;
661  ctx->pic_conf.tile_height = avctx->height;
662  ctx->pic_conf.luma_bands = ctx->pic_conf.chroma_bands = 1;
663 
664  result = ff_ivi_init_planes(avctx, ctx->planes, &ctx->pic_conf, 0);
665  if (result) {
666  av_log(avctx, AV_LOG_ERROR, "Couldn't allocate color planes!\n");
667  return AVERROR_INVALIDDATA;
668  }
669 
670  ctx->buf_switch = 0;
671  ctx->inter_scal = 0;
672 
678 
679  ctx->is_indeo4 = 0;
680 
681  avctx->pix_fmt = AV_PIX_FMT_YUV410P;
682 
683  return 0;
684 }
685 
687  .name = "indeo5",
688  .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 5"),
689  .type = AVMEDIA_TYPE_VIDEO,
690  .id = AV_CODEC_ID_INDEO5,
691  .priv_data_size = sizeof(IVI45DecContext),
692  .init = decode_init,
693  .close = ff_ivi_decode_close,
695  .capabilities = AV_CODEC_CAP_DR1,
696  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
697 };
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:48
static const uint8_t ivi5_scale_quant_8x8_inter[5][24]
Definition: indeo5data.h:115
int is_empty
= 1 if this band doesn&#39;t contain any data
Definition: ivi.h:157
const uint8_t ff_ivi_direct_scan_4x4[16]
Definition: ivi.c:1250
uint8_t type
macroblock type: 0 - INTRA, 1 - INTER
Definition: ivi.h:114
int num_MBs
number of macroblocks in this tile
Definition: ivi.h:135
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static const uint16_t ivi5_base_quant_4x4_inter[16]
Definition: indeo5data.h:106
static av_always_inline void mv_scale(Mv *dst, Mv *src, int td, int tb)
Definition: hevc_mvs.c:115
int(* is_nonnull_frame)(struct IVI45DecContext *ctx)
Definition: ivi.h:262
InvTransformPtr * inv_transform
Definition: ivi.h:177
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:379
int inter_scal
signals a sequence of scalable inter frames
Definition: ivi.h:223
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static const uint16_t ivi5_base_quant_4x4_intra[16]
Definition: indeo5data.h:110
#define IVI_MBs_PER_TILE(tile_width, tile_height, mb_size)
calculate number of macroblocks in a tile
Definition: ivi.h:286
av_cold int ff_ivi_decode_close(AVCodecContext *avctx)
Close Indeo5 decoder and clean up its context.
Definition: ivi.c:1207
void ff_ivi_dc_col_slant(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
DC-only inverse column slant transform.
Definition: ivi_dsp.c:694
#define IVI_VLC_BITS
max number of bits of the ivi&#39;s huffman codes
Definition: ivi.h:49
static const uint8_t ivi5_common_pic_sizes[30]
standard picture dimensions (width, height divided by 4)
Definition: indeo5data.h:35
int dst_buf
buffer index for the currently decoded frame
Definition: ivi.h:233
int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ivi.c:1063
DSP functions (inverse transforms, motion compensations, wavelet recomposition) for Indeo Video Inter...
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:741
int is_halfpel
precision of the motion compensation: 0 - fullpel, 1 - halfpel
Definition: ivi.h:160
droppable P-frame
Definition: indeo5.c:45
uint8_t chroma_bands
Definition: ivi.h:210
int(* decode_pic_hdr)(struct IVI45DecContext *ctx, AVCodecContext *avctx)
Definition: ivi.h:258
int plane
plane number this band belongs to
Definition: ivi.h:145
int bufsize
band buffer size in bytes
Definition: ivi.h:183
IVIPicConfig pic_conf
Definition: ivi.h:229
void ff_ivi_row_slant8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
inverse 1D row slant transform
Definition: ivi_dsp.c:629
void ff_ivi_dc_slant_2d(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
DC-only two-dimensional inverse slant transform.
Definition: ivi_dsp.c:616
AVCodec.
Definition: codec.h:190
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
void(* switch_buffers)(struct IVI45DecContext *ctx)
Definition: ivi.h:261
int height
Definition: ivi.h:148
static int decode_mb_info(IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx)
Decode info (block type, cbp, quant delta, motion vector) for all macroblocks in the current tile...
Definition: indeo5.c:455
static av_cold int decode_init(AVCodecContext *avctx)
Initialize Indeo5 decoder.
Definition: indeo5.c:641
uint8_t luma_bands
Definition: ivi.h:209
ptrdiff_t pitch
pitch associated with the buffers above
Definition: ivi.h:156
VLC * tab
index of one of the predefined tables or "7" for custom one
Definition: ivi.h:66
uint8_t
#define av_cold
Definition: attributes.h:88
void ff_ivi_put_pixels_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
Copy the pixels into the frame buffer.
Definition: ivi_dsp.c:751
#define mb
const uint16_t * inter_base
quantization matrix for inter blocks
Definition: ivi.h:185
static const uint16_t ivi5_base_quant_8x8_intra[5][64]
Definition: indeo5data.h:78
static int decode_gop_header(IVI45DecContext *ctx, AVCodecContext *avctx)
Decode Indeo5 GOP (Group of pictures) header.
Definition: indeo5.c:60
uint16_t pic_height
Definition: ivi.h:204
int inherit_mv
tells if motion vector is inherited from reference macroblock
Definition: ivi.h:161
uint16_t tile_height
Definition: ivi.h:208
GetBitContext gb
Definition: ivi.h:214
uint16_t chroma_width
Definition: ivi.h:205
const uint8_t ff_ivi_vertical_scan_8x8[64]
Scan patterns shared between indeo4 and indeo5.
Definition: ivi.c:1228
uint8_t cbp
coded block pattern
Definition: ivi.h:115
int qdelta_present
tells if Qdelta signal is present in the bitstream (Indeo5 only)
Definition: ivi.h:163
#define IVI5_IS_PROTECTED
Definition: ivi.h:50
uint16_t checksum
frame checksum
Definition: ivi.h:227
bitstream reader API header.
uint32_t pic_hdr_size
picture header size in bytes
Definition: ivi.h:225
void ff_ivi_put_dc_pixel_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
Copy the DC coefficient into the first pixel of the block and zero all others.
Definition: ivi_dsp.c:761
uint16_t pic_width
Definition: ivi.h:203
empty frame with no data
Definition: indeo5.c:46
int gop_invalid
Definition: ivi.h:264
int(* decode_band_hdr)(struct IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Definition: ivi.h:259
IVIPlaneDesc planes[3]
color planes
Definition: ivi.h:230
#define av_log(a,...)
const uint16_t * intra_base
quantization matrix for intra blocks
Definition: ivi.h:184
int width
Definition: ivi.h:147
int data_size
size of the band data
Definition: ivi.h:151
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:849
int blk_size
block size
Definition: ivi.h:159
static int is_nonnull_frame(IVI45DecContext *ctx)
Definition: indeo5.c:632
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
uint8_t corr[61 *2]
rvmap correction pairs
Definition: ivi.h:172
RVMapDesc rvmap_tabs[9]
local corrected copy of the static rvmap tables
Definition: ivi.h:215
void ff_ivi_dc_row_slant(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
DC-only inverse row slant transform.
Definition: ivi_dsp.c:649
AVCodec ff_indeo5_decoder
Definition: indeo5.c:686
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:153
int is_indeo4
Definition: ivi.h:267
static const uint16_t ivi5_base_quant_8x8_inter[5][64]
Indeo5 dequantization matrixes consist of two tables: base table and scale table. ...
Definition: indeo5data.h:50
av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height)
Initialize tile and macroblock descriptors.
Definition: ivi.c:390
int ref_buf
inter frame reference buffer index
Definition: ivi.h:234
DCTransformPtr * dc_transform
Definition: ivi.h:179
This file contains structures and macros shared by both Indeo4 and Indeo5 decoders.
const char * name
Name of the codec implementation.
Definition: codec.h:197
static int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
compare some properties of two pictures
Definition: ivi.h:274
static const uint8_t ivi5_scale_quant_8x8_intra[5][24]
Definition: indeo5data.h:133
#define IVI5_PIC_SIZE_ESC
Definition: indeo5.c:49
Huffman table is used for coding macroblocks.
Definition: ivi.h:75
int inherit_qdelta
tells if quantiser delta is inherited from reference macroblock
Definition: ivi.h:162
uint32_t frame_num
Definition: ivi.h:217
const uint8_t ff_ivi_horizontal_scan_8x8[64]
Definition: ivi.c:1239
const RVMapDesc ff_ivi_rvmap_tabs[9]
Run-value (RLE) tables.
Definition: ivi.c:1258
This file contains data needed for the Indeo5 decoder.
int is_scalable
Definition: ivi.h:221
int width
picture width / height.
Definition: avcodec.h:704
IVIMbInfo * mbs
array of macroblock descriptors
Definition: ivi.h:136
AVFormatContext * ctx
Definition: movenc.c:48
#define s(width, name)
Definition: cbs_vp9.c:257
const uint8_t * inter_scale
quantization coefficient for inter blocks
Definition: ivi.h:187
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
Definition: get_bits.h:797
void ff_ivi_col_slant8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
inverse 1D column slant transform
Definition: ivi_dsp.c:667
int ff_ivi_dec_huff_desc(GetBitContext *gb, int desc_coded, int which_tab, IVIHuffTab *huff_tab, AVCodecContext *avctx)
Decode a huffman codebook descriptor from the bitstream and select specified huffman table...
Definition: ivi.c:207
uint16_t chroma_height
Definition: ivi.h:206
uint32_t lock_word
Definition: ivi.h:249
int8_t q_delta
quant delta
Definition: ivi.h:116
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
uint16_t tile_width
Definition: ivi.h:207
int ypos
Definition: ivi.h:129
IVIHuffTab mb_vlc
current macroblock table descriptor
Definition: ivi.h:238
int is_2d_trans
1 indicates that the two-dimensional inverse transform is used
Definition: ivi.h:180
Libavcodec external API header.
int glob_quant
quant base for this band
Definition: ivi.h:165
int height
Definition: ivi.h:131
av_cold int ff_ivi_init_planes(AVCodecContext *avctx, IVIPlaneDesc *planes, const IVIPicConfig *cfg, int is_indeo4)
Initialize planes (prepares descriptors, allocates buffers etc).
Definition: ivi.c:286
main external API structure.
Definition: avcodec.h:531
uint8_t frame_flags
Definition: ivi.h:226
int num_corr
number of correction entries
Definition: ivi.h:171
static int ivi_scale_mv(int mv, int mv_scale)
scale motion vector
Definition: ivi.h:293
information for Indeo tile
Definition: ivi.h:127
int buf_switch
used to switch between three buffers
Definition: ivi.h:232
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:498
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:467
uint8_t gop_flags
Definition: ivi.h:248
static int skip_hdr_extension(GetBitContext *gb)
Skip a header extension.
Definition: indeo5.c:293
static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
Decode Indeo5 picture header.
Definition: indeo5.c:315
const uint8_t ff_zigzag_direct[64]
Definition: mathtables.c:98
IVIBandDesc * bands
array of band descriptors
Definition: ivi.h:198
int32_t checksum
for debug purposes
Definition: ivi.h:181
int rvmap_sel
rvmap table selector
Definition: ivi.h:173
int8_t mv_x
motion vector (x component)
Definition: ivi.h:117
int8_t mv_y
motion vector (y component)
Definition: ivi.h:118
static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Decode Indeo5 band header.
Definition: indeo5.c:383
#define IVI_TOSIGNED(val)
convert unsigned values into signed ones (the sign is in the LSB)
Definition: ivi.h:290
int mb_size
macroblock size
Definition: ivi.h:158
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:546
IVIMbInfo * ref_mbs
ptr to the macroblock descriptors of the reference tile
Definition: ivi.h:137
int xpos
Definition: ivi.h:128
void avpriv_report_missing_feature(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
uint16_t gop_hdr_size
Definition: ivi.h:247
void ff_ivi_inverse_slant_4x4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
two-dimensional inverse slant 4x4 transform
Definition: ivi_dsp.c:576
int16_t xpos
Definition: ivi.h:111
static const uint8_t ivi5_scale_quant_4x4_inter[24]
Definition: indeo5data.h:151
int band_num
band number
Definition: ivi.h:146
common internal api header.
int transform_size
Definition: ivi.h:178
int ref2_buf
temporal storage for switching buffers
Definition: ivi.h:235
void ff_ivi_inverse_slant_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
two-dimensional inverse slant 8x8 transform
Definition: ivi_dsp.c:536
droppable P-frame used in the scalability mode
Definition: indeo5.c:44
const uint8_t * scan
ptr to the scan pattern
Definition: ivi.h:166
void * priv_data
Definition: avcodec.h:558
int width
Definition: ivi.h:130
int len
int checksum_present
Definition: ivi.h:182
static const uint8_t ivi5_scale_quant_4x4_intra[24]
Definition: indeo5data.h:156
VLC_TYPE(* table)[2]
code, bits
Definition: vlc.h:28
non-droppable P-frame
Definition: indeo5.c:43
static const uint8_t * align_get_bits(GetBitContext *s)
Definition: get_bits.h:693
int(* decode_mb_info)(struct IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx)
Definition: ivi.h:260
int16_t ypos
Definition: ivi.h:112
static void switch_buffers(IVI45DecContext *ctx)
Switch buffers.
Definition: indeo5.c:594
int prev_frame_type
frame type of the previous frame
Definition: ivi.h:219
and forward the result(frame or status change) to the corresponding input.If nothing is possible
information for Indeo macroblock (16x16, 8x8 or 4x4)
Definition: ivi.h:110
IVIHuffTab blk_vlc
vlc table for decoding block data
Definition: ivi.h:169
av_cold void ff_ivi_init_static_vlc(void)
Initialize static codes used for macroblock and block decoding.
Definition: ivi.c:160
const uint8_t * intra_scale
quantization coefficient for intra blocks
Definition: ivi.h:186
#define FFSWAP(type, a, b)
Definition: common.h:99
uint32_t buf_offs
address in the output buffer for this mb
Definition: ivi.h:113
information for Indeo wavelet band
Definition: ivi.h:144
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:50
int i
Definition: input.c:407
int frame_type
Definition: ivi.h:218