Libav
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 Libav.
6  *
7  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
30 #define BITSTREAM_READER_LE
31 #include "avcodec.h"
32 #include "get_bits.h"
33 #include "indeo4data.h"
34 #include "internal.h"
35 #include "ivi.h"
36 #include "ivi_dsp.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 
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 
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 (ctx->frame_type == IVI4_FRAMETYPE_BIDIR)
123  ctx->has_b_frames = 1;
124 
125  ctx->has_transp = get_bits1(&ctx->gb);
126 
127  /* unknown bit: Mac decoder ignores this bit, XANIM returns error */
128  if (get_bits1(&ctx->gb)) {
129  av_log(avctx, AV_LOG_ERROR, "Sync bit is set!\n");
130  return AVERROR_INVALIDDATA;
131  }
132 
133  ctx->data_size = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 24) : 0;
134 
135  /* null frames don't contain anything else so we just return */
137  ff_dlog(avctx, "Null frame encountered!\n");
138  return 0;
139  }
140 
141  /* Check key lock status. If enabled - ignore lock word. */
142  /* Usually we have to prompt the user for the password, but */
143  /* we don't do that because Indeo 4 videos can be decoded anyway */
144  if (get_bits1(&ctx->gb)) {
145  skip_bits_long(&ctx->gb, 32);
146  ff_dlog(avctx, "Password-protected clip!\n");
147  }
148 
149  pic_size_indx = get_bits(&ctx->gb, 3);
150  if (pic_size_indx == IVI4_PIC_SIZE_ESC) {
151  pic_conf.pic_height = get_bits(&ctx->gb, 16);
152  pic_conf.pic_width = get_bits(&ctx->gb, 16);
153  } else {
154  pic_conf.pic_height = ivi4_common_pic_sizes[pic_size_indx * 2 + 1];
155  pic_conf.pic_width = ivi4_common_pic_sizes[pic_size_indx * 2 ];
156  }
157 
158  /* Decode tile dimensions. */
159  ctx->uses_tiling = get_bits1(&ctx->gb);
160  if (ctx->uses_tiling) {
161  pic_conf.tile_height = scale_tile_size(pic_conf.pic_height, get_bits(&ctx->gb, 4));
162  pic_conf.tile_width = scale_tile_size(pic_conf.pic_width, get_bits(&ctx->gb, 4));
163  } else {
164  pic_conf.tile_height = pic_conf.pic_height;
165  pic_conf.tile_width = pic_conf.pic_width;
166  }
167 
168  /* Decode chroma subsampling. We support only 4:4 aka YVU9. */
169  if (get_bits(&ctx->gb, 2)) {
170  av_log(avctx, AV_LOG_ERROR, "Only YVU9 picture format is supported!\n");
171  return AVERROR_INVALIDDATA;
172  }
173  pic_conf.chroma_height = (pic_conf.pic_height + 3) >> 2;
174  pic_conf.chroma_width = (pic_conf.pic_width + 3) >> 2;
175 
176  /* decode subdivision of the planes */
177  pic_conf.luma_bands = decode_plane_subdivision(&ctx->gb);
178  if (pic_conf.luma_bands)
179  pic_conf.chroma_bands = decode_plane_subdivision(&ctx->gb);
180  ctx->is_scalable = pic_conf.luma_bands != 1 || pic_conf.chroma_bands != 1;
181  if (ctx->is_scalable && (pic_conf.luma_bands != 4 || pic_conf.chroma_bands != 1)) {
182  av_log(avctx, AV_LOG_ERROR, "Scalability: unsupported subdivision! Luma bands: %d, chroma bands: %d\n",
183  pic_conf.luma_bands, pic_conf.chroma_bands);
184  return AVERROR_INVALIDDATA;
185  }
186 
187  /* check if picture layout was changed and reallocate buffers */
188  if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf)) {
189  if (ff_ivi_init_planes(ctx->planes, &pic_conf, 1)) {
190  av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
191  ctx->pic_conf.luma_bands = 0;
192  return AVERROR(ENOMEM);
193  }
194 
195  ctx->pic_conf = pic_conf;
196 
197  /* set default macroblock/block dimensions */
198  for (p = 0; p <= 2; p++) {
199  for (i = 0; i < (!p ? pic_conf.luma_bands : pic_conf.chroma_bands); i++) {
200  ctx->planes[p].bands[i].mb_size = !p ? (!ctx->is_scalable ? 16 : 8) : 4;
201  ctx->planes[p].bands[i].blk_size = !p ? 8 : 4;
202  }
203  }
204 
206  ctx->pic_conf.tile_height)) {
207  av_log(avctx, AV_LOG_ERROR,
208  "Couldn't reallocate internal structures!\n");
209  return AVERROR(ENOMEM);
210  }
211  }
212 
213  ctx->frame_num = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 20) : 0;
214 
215  /* skip decTimeEst field if present */
216  if (get_bits1(&ctx->gb))
217  skip_bits(&ctx->gb, 8);
218 
219  /* decode macroblock and block huffman codebooks */
220  if (ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_MB_HUFF, &ctx->mb_vlc, avctx) ||
221  ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_BLK_HUFF, &ctx->blk_vlc, avctx))
222  return AVERROR_INVALIDDATA;
223 
224  ctx->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
225 
226  ctx->in_imf = get_bits1(&ctx->gb);
227  ctx->in_q = get_bits1(&ctx->gb);
228 
229  ctx->pic_glob_quant = get_bits(&ctx->gb, 5);
230 
231  /* TODO: ignore this parameter if unused */
232  ctx->unknown1 = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 0;
233 
234  ctx->checksum = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 16) : 0;
235 
236  /* skip picture header extension if any */
237  while (get_bits1(&ctx->gb)) {
238  ff_dlog(avctx, "Pic hdr extension encountered!\n");
239  skip_bits(&ctx->gb, 8);
240  }
241 
242  if (get_bits1(&ctx->gb)) {
243  av_log(avctx, AV_LOG_ERROR, "Bad blocks bits encountered!\n");
244  }
245 
246  align_get_bits(&ctx->gb);
247 
248  return 0;
249 }
250 
251 
261  AVCodecContext *avctx)
262 {
263  int plane, band_num, indx, transform_id, scan_indx;
264  int i;
265 
266  plane = get_bits(&ctx->gb, 2);
267  band_num = get_bits(&ctx->gb, 4);
268  if (band->plane != plane || band->band_num != band_num) {
269  av_log(avctx, AV_LOG_ERROR, "Invalid band header sequence!\n");
270  return AVERROR_INVALIDDATA;
271  }
272 
273  band->is_empty = get_bits1(&ctx->gb);
274  if (!band->is_empty) {
275  int old_blk_size = band->blk_size;
276  /* skip header size
277  * If header size is not given, header size is 4 bytes. */
278  if (get_bits1(&ctx->gb))
279  skip_bits(&ctx->gb, 16);
280 
281  band->is_halfpel = get_bits(&ctx->gb, 2);
282  if (band->is_halfpel >= 2) {
283  av_log(avctx, AV_LOG_ERROR, "Invalid/unsupported mv resolution: %d!\n",
284  band->is_halfpel);
285  return AVERROR_INVALIDDATA;
286  }
287  if (!band->is_halfpel)
288  ctx->uses_fullpel = 1;
289 
290  band->checksum_present = get_bits1(&ctx->gb);
291  if (band->checksum_present)
292  band->checksum = get_bits(&ctx->gb, 16);
293 
294  indx = get_bits(&ctx->gb, 2);
295  if (indx == 3) {
296  av_log(avctx, AV_LOG_ERROR, "Invalid block size!\n");
297  return AVERROR_INVALIDDATA;
298  }
299  band->mb_size = 16 >> indx;
300  band->blk_size = 8 >> (indx >> 1);
301 
302  band->inherit_mv = get_bits1(&ctx->gb);
303  band->inherit_qdelta = get_bits1(&ctx->gb);
304 
305  band->glob_quant = get_bits(&ctx->gb, 5);
306 
307  if (!get_bits1(&ctx->gb) || ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
308  transform_id = get_bits(&ctx->gb, 5);
309  if (transform_id >= FF_ARRAY_ELEMS(transforms) ||
310  !transforms[transform_id].inv_trans) {
311  avpriv_request_sample(avctx, "Transform %d", transform_id);
312  return AVERROR_PATCHWELCOME;
313  }
314  if ((transform_id >= 7 && transform_id <= 9) ||
315  transform_id == 17) {
316  avpriv_request_sample(avctx, "DCT transform");
317  return AVERROR_PATCHWELCOME;
318  }
319 
320  if ((transform_id >= 0 && transform_id <= 2) || transform_id == 10)
321  ctx->uses_haar = 1;
322 
323  band->inv_transform = transforms[transform_id].inv_trans;
324  band->dc_transform = transforms[transform_id].dc_trans;
325  band->is_2d_trans = transforms[transform_id].is_2d_trans;
326  if (transform_id < 10)
327  band->transform_size = 8;
328  else
329  band->transform_size = 4;
330 
331  if (band->blk_size != band->transform_size)
332  return AVERROR_INVALIDDATA;
333 
334  scan_indx = get_bits(&ctx->gb, 4);
335  if (scan_indx == 15) {
336  av_log(avctx, AV_LOG_ERROR, "Custom scan pattern encountered!\n");
337  return AVERROR_INVALIDDATA;
338  }
339  if (scan_indx > 4 && scan_indx < 10) {
340  if (band->blk_size != 4)
341  return AVERROR_INVALIDDATA;
342  } else if (band->blk_size != 8)
343  return AVERROR_INVALIDDATA;
344 
345  band->scan = scan_index_to_tab[scan_indx];
346 
347  band->quant_mat = get_bits(&ctx->gb, 5);
349 
350  if (band->quant_mat == 31)
351  av_log(avctx, AV_LOG_ERROR,
352  "Custom quant matrix encountered!\n");
353  else
354  avpriv_request_sample(avctx, "Quantization matrix %d",
355  band->quant_mat);
356  band->quant_mat = -1;
357  return AVERROR_INVALIDDATA;
358  }
359  } else {
360  if (old_blk_size != band->blk_size) {
361  av_log(avctx, AV_LOG_ERROR,
362  "The band block size does not match the configuration "
363  "inherited\n");
364  return AVERROR_INVALIDDATA;
365  }
366  if (band->quant_mat < 0) {
367  av_log(avctx, AV_LOG_ERROR, "Invalid quant_mat inherited\n");
368  return AVERROR_INVALIDDATA;
369  }
370  }
371 
372  /* decode block huffman codebook */
373  if (!get_bits1(&ctx->gb))
374  band->blk_vlc.tab = ctx->blk_vlc.tab;
375  else
376  if (ff_ivi_dec_huff_desc(&ctx->gb, 1, IVI_BLK_HUFF,
377  &band->blk_vlc, avctx))
378  return AVERROR_INVALIDDATA;
379 
380  /* select appropriate rvmap table for this band */
381  band->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
382 
383  /* decode rvmap probability corrections if any */
384  band->num_corr = 0; /* there is no corrections */
385  if (get_bits1(&ctx->gb)) {
386  band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */
387  if (band->num_corr > 61) {
388  av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n",
389  band->num_corr);
390  return AVERROR_INVALIDDATA;
391  }
392 
393  /* read correction pairs */
394  for (i = 0; i < band->num_corr * 2; i++)
395  band->corr[i] = get_bits(&ctx->gb, 8);
396  }
397  }
398 
399  if (band->blk_size == 8) {
401  band->inter_base = &ivi4_quant_8x8_inter[quant_index_to_tab[band->quant_mat]][0];
402  } else {
404  band->inter_base = &ivi4_quant_4x4_inter[quant_index_to_tab[band->quant_mat]][0];
405  }
406 
407  /* Indeo 4 doesn't use scale tables */
408  band->intra_scale = NULL;
409  band->inter_scale = NULL;
410 
411  align_get_bits(&ctx->gb);
412 
413  return 0;
414 }
415 
416 
428  IVITile *tile, AVCodecContext *avctx)
429 {
430  int x, y, mv_x, mv_y, mv_delta, offs, mb_offset, blks_per_mb,
431  mv_scale, mb_type_bits;
432  IVIMbInfo *mb, *ref_mb;
433  int row_offset = band->mb_size * band->pitch;
434 
435  mb = tile->mbs;
436  ref_mb = tile->ref_mbs;
437  offs = tile->ypos * band->pitch + tile->xpos;
438 
439  blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
440  mb_type_bits = ctx->frame_type == IVI4_FRAMETYPE_BIDIR ? 2 : 1;
441 
442  /* scale factor for motion vectors */
443  mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
444  mv_x = mv_y = 0;
445 
446  for (y = tile->ypos; y < tile->ypos + tile->height; y += band->mb_size) {
447  mb_offset = offs;
448 
449  for (x = tile->xpos; x < tile->xpos + tile->width; x += band->mb_size) {
450  mb->xpos = x;
451  mb->ypos = y;
452  mb->buf_offs = mb_offset;
453  mb->b_mv_x =
454  mb->b_mv_y = 0;
455 
456  if (get_bits1(&ctx->gb)) {
457  if (ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
458  av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
459  return AVERROR_INVALIDDATA;
460  }
461  mb->type = 1; /* empty macroblocks are always INTER */
462  mb->cbp = 0; /* all blocks are empty */
463 
464  mb->q_delta = 0;
465  if (!band->plane && !band->band_num && ctx->in_q) {
466  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
467  IVI_VLC_BITS, 1);
468  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
469  }
470 
471  mb->mv_x = mb->mv_y = 0; /* no motion vector coded */
472  if (band->inherit_mv && ref_mb) {
473  /* motion vector inheritance */
474  if (mv_scale) {
475  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
476  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
477  } else {
478  mb->mv_x = ref_mb->mv_x;
479  mb->mv_y = ref_mb->mv_y;
480  }
481  }
482  } else {
483  if (band->inherit_mv) {
484  /* copy mb_type from corresponding reference mb */
485  if (!ref_mb)
486  return AVERROR_INVALIDDATA;
487  mb->type = ref_mb->type;
488  } else if (ctx->frame_type == IVI4_FRAMETYPE_INTRA ||
490  mb->type = 0; /* mb_type is always INTRA for intra-frames */
491  } else {
492  mb->type = get_bits(&ctx->gb, mb_type_bits);
493  }
494 
495  mb->cbp = get_bits(&ctx->gb, blks_per_mb);
496 
497  mb->q_delta = 0;
498  if (band->inherit_qdelta) {
499  if (ref_mb) mb->q_delta = ref_mb->q_delta;
500  } else if (mb->cbp || (!band->plane && !band->band_num &&
501  ctx->in_q)) {
502  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
503  IVI_VLC_BITS, 1);
504  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
505  }
506 
507  if (!mb->type) {
508  mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */
509  } else {
510  if (band->inherit_mv) {
511  if (ref_mb)
512  /* motion vector inheritance */
513  if (mv_scale) {
514  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
515  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
516  } else {
517  mb->mv_x = ref_mb->mv_x;
518  mb->mv_y = ref_mb->mv_y;
519  }
520  } else {
521  /* decode motion vector deltas */
522  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
523  IVI_VLC_BITS, 1);
524  mv_y += IVI_TOSIGNED(mv_delta);
525  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
526  IVI_VLC_BITS, 1);
527  mv_x += IVI_TOSIGNED(mv_delta);
528  mb->mv_x = mv_x;
529  mb->mv_y = mv_y;
530  if (mb->type == 3) {
531  mv_delta = get_vlc2(&ctx->gb,
532  ctx->mb_vlc.tab->table,
533  IVI_VLC_BITS, 1);
534  mv_y += IVI_TOSIGNED(mv_delta);
535  mv_delta = get_vlc2(&ctx->gb,
536  ctx->mb_vlc.tab->table,
537  IVI_VLC_BITS, 1);
538  mv_x += IVI_TOSIGNED(mv_delta);
539  mb->b_mv_x = -mv_x;
540  mb->b_mv_y = -mv_y;
541  }
542  }
543  if (mb->type == 2) {
544  mb->b_mv_x = -mb->mv_x;
545  mb->b_mv_y = -mb->mv_y;
546  mb->mv_x = 0;
547  mb->mv_y = 0;
548  }
549  }
550  }
551 
552  mb++;
553  if (ref_mb)
554  ref_mb++;
555  mb_offset += band->mb_size;
556  }
557 
558  offs += row_offset;
559  }
560 
561  align_get_bits(&ctx->gb);
562 
563  return 0;
564 }
565 
566 
573 {
574  int is_prev_ref = 0, is_ref = 0;
575 
576  switch (ctx->prev_frame_type) {
580  is_prev_ref = 1;
581  break;
582  }
583 
584  switch (ctx->frame_type) {
588  is_ref = 1;
589  break;
590  }
591 
592  if (is_prev_ref && is_ref) {
593  FFSWAP(int, ctx->dst_buf, ctx->ref_buf);
594  } else if (is_prev_ref) {
595  FFSWAP(int, ctx->ref_buf, ctx->b_ref_buf);
596  FFSWAP(int, ctx->dst_buf, ctx->ref_buf);
597  }
598 }
599 
600 
602 {
604 }
605 
606 
608 {
609  IVI45DecContext *ctx = avctx->priv_data;
610 
612 
613  /* copy rvmap tables in our context so we can apply changes to them */
614  memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
615 
616  /* Force allocation of the internal buffers */
617  /* during picture header decoding. */
618  ctx->pic_conf.pic_width = 0;
619  ctx->pic_conf.pic_height = 0;
620 
621  avctx->pix_fmt = AV_PIX_FMT_YUV410P;
622 
628 
629  ctx->is_indeo4 = 1;
630  ctx->show_indeo4_info = 1;
631 
632  ctx->dst_buf = 0;
633  ctx->ref_buf = 1;
634  ctx->b_ref_buf = 3; /* buffer 2 is used for scalability mode */
635  ctx->p_frame = av_frame_alloc();
636  if (!ctx->p_frame)
637  return AVERROR(ENOMEM);
638 
639  return 0;
640 }
641 
642 
644  .name = "indeo4",
645  .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 4"),
646  .type = AVMEDIA_TYPE_VIDEO,
647  .id = AV_CODEC_ID_INDEO4,
648  .priv_data_size = sizeof(IVI45DecContext),
649  .init = decode_init,
650  .close = ff_ivi_decode_close,
652  .capabilities = AV_CODEC_CAP_DR1,
653 };
int is_empty
= 1 if this band doesn&#39;t contain any data
Definition: ivi.h:157
uint32_t data_size
size of the frame data in bytes from picture header
Definition: ivi.h:219
uint8_t type
macroblock type: 0 - INTRA, 1 - INTER
Definition: ivi.h:114
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: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:698
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:54
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:718
static av_always_inline void mv_scale(Mv *dst, Mv *src, int td, int tb)
Definition: hevc_mvs.c:140
This file contains data needed for the Indeo 4 decoder.
int(* is_nonnull_frame)(struct IVI45DecContext *ctx)
Definition: ivi.h:261
InvTransformPtr * inv_transform
Definition: ivi.h:176
#define IVI4_PIC_SIZE_ESC
Definition: indeo4.c:38
static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
Decode Indeo 4 picture header.
Definition: indeo4.c:105
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:228
static int decode_plane_subdivision(GetBitContext *gb)
Decode subdivision of a plane.
Definition: indeo4.c:76
static void skip_bits_long(GetBitContext *s, int n)
Definition: get_bits.h:187
non-droppable P-frame
Definition: ivi.h:42
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:462
int8_t b_mv_y
second motion vector (y component)
Definition: ivi.h:120
av_cold int ff_ivi_decode_close(AVCodecContext *avctx)
Close Indeo5 decoder and clean up its context.
Definition: ivi.c:1159
#define IVI_VLC_BITS
max number of bits of the ivi&#39;s huffman codes
Definition: ivi.h:49
int dst_buf
buffer index for the currently decoded frame
Definition: ivi.h:232
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:751
av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (%s)\, 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 ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ivi.c:1024
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:1621
int is_halfpel
precision of the motion compensation: 0 - fullpel, 1 - halfpel
Definition: ivi.h:160
uint8_t chroma_bands
Definition: ivi.h:209
int(* decode_pic_hdr)(struct IVI45DecContext *ctx, AVCodecContext *avctx)
Definition: ivi.h:257
#define FF_ARRAY_ELEMS(a)
int plane
plane number this band belongs to
Definition: ivi.h:145
IVIPicConfig pic_conf
Definition: ivi.h:228
AVCodec.
Definition: avcodec.h:3120
int quant_mat
dequant matrix index
Definition: ivi.h:164
uint8_t has_b_frames
Definition: ivi.h:251
void(* switch_buffers)(struct IVI45DecContext *ctx)
Definition: ivi.h:260
int8_t b_mv_x
second motion vector (x component)
Definition: ivi.h:119
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:741
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
uint8_t uses_tiling
Definition: ivi.h:253
uint8_t luma_bands
Definition: ivi.h:208
VLC * tab
index of one of the predefined tables or "7" for custom one
Definition: ivi.h:66
static const struct @26 transforms[18]
#define av_cold
Definition: attributes.h:66
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:68
uint8_t pic_glob_quant
Definition: ivi.h:243
const uint16_t * inter_base
quantization matrix for inter blocks
Definition: ivi.h:184
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:306
uint16_t pic_height
Definition: ivi.h:203
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:161
static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Decode Indeo 4 band header.
Definition: indeo4.c:260
uint16_t tile_height
Definition: ivi.h:207
GetBitContext gb
Definition: ivi.h:213
uint16_t chroma_width
Definition: ivi.h:204
int pitch
pitch associated with the buffers above
Definition: ivi.h:156
static const uint16_t ivi4_quant_8x8_inter[9][64]
Definition: indeo4data.h:182
uint8_t cbp
coded block pattern
Definition: ivi.h:115
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:315
uint16_t checksum
frame checksum
Definition: ivi.h:226
bitstream reader API header.
uint16_t pic_width
Definition: ivi.h:202
static const uint16_t ivi4_quant_4x4_inter[5][16]
Definition: indeo4data.h:308
int(* decode_band_hdr)(struct IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Definition: ivi.h:258
IVIPlaneDesc planes[3]
color planes
Definition: ivi.h:229
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:619
const uint16_t * intra_base
quantization matrix for intra blocks
Definition: ivi.h:183
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:639
uint8_t unknown1
Definition: ivi.h:244
int blk_size
block size
Definition: ivi.h:159
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:124
uint8_t corr[61 *2]
rvmap correction pairs
Definition: ivi.h:171
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:260
RVMapDesc rvmap_tabs[9]
local corrected copy of the static rvmap tables
Definition: ivi.h:214
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:438
#define AVERROR(e)
Definition: error.h:43
uint8_t in_q
flag for explicitly stored quantiser delta
Definition: ivi.h:242
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:148
int show_indeo4_info
Definition: ivi.h:250
int is_indeo4
Definition: ivi.h:265
av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height)
Initialize tile and macroblock descriptors.
Definition: ivi.c:419
DCTransformPtr * dc_trans
Definition: indeo4.c:43
void ff_ivi_dc_col_slant(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
DC-only inverse column slant transform.
Definition: ivi_dsp.c:684
int ref_buf
inter frame reference buffer index
Definition: ivi.h:233
DCTransformPtr * dc_transform
Definition: ivi.h:178
This file contains structures and macros shared by both Indeo4 and Indeo5 decoders.
static const uint8_t * scan_index_to_tab[15]
Definition: indeo4data.h:63
const char * name
Name of the codec implementation.
Definition: avcodec.h:3127
static int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
compare some properties of two pictures
Definition: ivi.h:272
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:369
int inherit_qdelta
tells if quantiser delta is inherited from reference macroblock
Definition: ivi.h:162
uint32_t frame_num
Definition: ivi.h:216
AVFrame * p_frame
Definition: ivi.h:267
const RVMapDesc ff_ivi_rvmap_tabs[9]
Run-value (RLE) tables.
Definition: ivi.c:1207
void() InvTransformPtr(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
Declare inverse transform function types.
Definition: ivi.h:90
int is_scalable
Definition: ivi.h:220
int is_2d_trans
Definition: indeo4.c:44
void() DCTransformPtr(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
Definition: ivi.h:91
static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
Definition: avconv.c:1288
IVIMbInfo * mbs
array of macroblock descriptors
Definition: ivi.h:136
AVFormatContext * ctx
Definition: movenc.c:48
static void switch_buffers(IVI45DecContext *ctx)
Rearrange decoding and reference buffers.
Definition: indeo4.c:572
const uint8_t * inter_scale
quantization coefficient for inter blocks
Definition: ivi.h:186
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:493
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:228
uint16_t chroma_height
Definition: ivi.h:205
int8_t q_delta
quant delta
Definition: ivi.h:116
static const uint8_t quant_index_to_tab[22]
Table for mapping quant matrix index from the bitstream into internal quant table number...
Definition: indeo4data.h:345
empty frame with no data
Definition: ivi.h:45
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:526
#define AVERROR_PATCHWELCOME
Not yet implemented in Libav, patches welcome.
Definition: error.h:57
uint16_t tile_width
Definition: ivi.h:206
NULL
Definition: eval.c:55
int ypos
Definition: ivi.h:129
IVIHuffTab mb_vlc
current macroblock table descriptor
Definition: ivi.h:237
int is_2d_trans
1 indicates that the two-dimensional inverse transform is used
Definition: ivi.h:179
Libavcodec external API header.
int glob_quant
quant base for this band
Definition: ivi.h:165
#define ff_dlog(ctx,...)
Definition: internal.h:60
int height
Definition: ivi.h:131
main external API structure.
Definition: avcodec.h:1409
intra frame with slightly different bitstream coding
Definition: ivi.h:41
int num_corr
number of correction entries
Definition: ivi.h:170
static int ivi_scale_mv(int mv, int mv_scale)
scale motion vector
Definition: ivi.h:291
information for Indeo tile
Definition: ivi.h:127
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:267
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:65
uint8_t in_imf
Definition: ivi.h:241
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:259
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:340
uint8_t uses_haar
Definition: ivi.h:254
static const uint16_t ivi4_quant_4x4_intra[5][16]
Definition: indeo4data.h:275
IVIBandDesc * bands
array of band descriptors
Definition: ivi.h:197
int32_t checksum
for debug purposes
Definition: ivi.h:180
int rvmap_sel
rvmap table selector
Definition: ivi.h:172
int8_t mv_x
motion vector (x component)
Definition: ivi.h:117
int8_t mv_y
motion vector (y component)
Definition: ivi.h:118
#define IVI_TOSIGNED(val)
convert unsigned values into signed ones (the sign is in the LSB)
Definition: ivi.h:288
int mb_size
macroblock size
Definition: ivi.h:158
IVIMbInfo * ref_mbs
ptr to the macroblock descriptors of the reference tile
Definition: ivi.h:137
int xpos
Definition: ivi.h:128
IVIHuffTab blk_vlc
current block table descriptor
Definition: ivi.h:238
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:566
int16_t xpos
Definition: ivi.h:111
int band_num
band number
Definition: ivi.h:146
InvTransformPtr * inv_trans
Definition: indeo4.c:42
common internal api header.
int transform_size
Definition: ivi.h:177
static int is_nonnull_frame(IVI45DecContext *ctx)
Definition: indeo4.c:601
static av_cold int init(AVCodecParserContext *s)
Definition: h264_parser.c:582
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:427
const uint8_t * scan
ptr to the scan pattern
Definition: ivi.h:166
void * priv_data
Definition: avcodec.h:1451
int width
Definition: ivi.h:130
static av_cold int decode_init(AVCodecContext *avctx)
Definition: indeo4.c:607
int checksum_present
Definition: ivi.h:181
uint8_t has_transp
transparency mode status: 1 - enabled
Definition: ivi.h:252
VLC_TYPE(* table)[2]
code, bits
Definition: vlc.h:28
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:606
static const uint8_t * align_get_bits(GetBitContext *s)
Definition: get_bits.h:403
int(* decode_mb_info)(struct IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx)
Definition: ivi.h:259
int16_t ypos
Definition: ivi.h:112
int prev_frame_type
frame type of the previous frame
Definition: ivi.h:218
information for Indeo macroblock (16x16, 8x8 or 4x4)
Definition: ivi.h:110
IVIHuffTab blk_vlc
vlc table for decoding block data
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:181
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:416
const uint8_t * intra_scale
quantization coefficient for intra blocks
Definition: ivi.h:185
uint8_t uses_fullpel
Definition: ivi.h:255
Huffman table is used for coding macroblocks.
Definition: ivi.h:75
#define FFSWAP(type, a, b)
Definition: common.h:69
uint32_t buf_offs
address in the output buffer for this mb
Definition: ivi.h:113
int b_ref_buf
second reference frame buffer index
Definition: ivi.h:235
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: avcodec.h:838
bidirectional frame
Definition: ivi.h:43
uint8_t rvmap_sel
Definition: ivi.h:240
AVCodec ff_indeo4_decoder
Definition: indeo4.c:643
int frame_type
Definition: ivi.h:217
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:657