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 "ivi_dsp.h"
34 #include "ivi_common.h"
35 #include "indeo4data.h"
36 
40 enum {
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 
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 
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  if (pic_conf.luma_bands)
200  pic_conf.chroma_bands = decode_plane_subdivision(&ctx->gb);
201  ctx->is_scalable = pic_conf.luma_bands != 1 || pic_conf.chroma_bands != 1;
202  if (ctx->is_scalable && (pic_conf.luma_bands != 4 || pic_conf.chroma_bands != 1)) {
203  av_log(avctx, AV_LOG_ERROR, "Scalability: unsupported subdivision! Luma bands: %d, chroma bands: %d\n",
204  pic_conf.luma_bands, pic_conf.chroma_bands);
205  return AVERROR_INVALIDDATA;
206  }
207 
208  /* check if picture layout was changed and reallocate buffers */
209  if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf)) {
210  if (ff_ivi_init_planes(ctx->planes, &pic_conf)) {
211  av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
212  ctx->pic_conf.luma_bands = 0;
213  return AVERROR(ENOMEM);
214  }
215 
216  ctx->pic_conf = pic_conf;
217 
218  /* set default macroblock/block dimensions */
219  for (p = 0; p <= 2; p++) {
220  for (i = 0; i < (!p ? pic_conf.luma_bands : pic_conf.chroma_bands); i++) {
221  ctx->planes[p].bands[i].mb_size = !p ? (!ctx->is_scalable ? 16 : 8) : 4;
222  ctx->planes[p].bands[i].blk_size = !p ? 8 : 4;
223  }
224  }
225 
227  ctx->pic_conf.tile_height)) {
228  av_log(avctx, AV_LOG_ERROR,
229  "Couldn't reallocate internal structures!\n");
230  return AVERROR(ENOMEM);
231  }
232  }
233 
234  ctx->frame_num = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 20) : 0;
235 
236  /* skip decTimeEst field if present */
237  if (get_bits1(&ctx->gb))
238  skip_bits(&ctx->gb, 8);
239 
240  /* decode macroblock and block huffman codebooks */
241  if (ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_MB_HUFF, &ctx->mb_vlc, avctx) ||
242  ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_BLK_HUFF, &ctx->blk_vlc, avctx))
243  return AVERROR_INVALIDDATA;
244 
245  ctx->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
246 
247  ctx->in_imf = get_bits1(&ctx->gb);
248  ctx->in_q = get_bits1(&ctx->gb);
249 
250  ctx->pic_glob_quant = get_bits(&ctx->gb, 5);
251 
252  /* TODO: ignore this parameter if unused */
253  ctx->unknown1 = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 0;
254 
255  ctx->checksum = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 16) : 0;
256 
257  /* skip picture header extension if any */
258  while (get_bits1(&ctx->gb)) {
259  av_dlog(avctx, "Pic hdr extension encountered!\n");
260  skip_bits(&ctx->gb, 8);
261  }
262 
263  if (get_bits1(&ctx->gb)) {
264  av_log(avctx, AV_LOG_ERROR, "Bad blocks bits encountered!\n");
265  }
266 
267  align_get_bits(&ctx->gb);
268 
269  return 0;
270 }
271 
272 
282  AVCodecContext *avctx)
283 {
284  int plane, band_num, indx, transform_id, scan_indx;
285  int i;
286 
287  plane = get_bits(&ctx->gb, 2);
288  band_num = get_bits(&ctx->gb, 4);
289  if (band->plane != plane || band->band_num != band_num) {
290  av_log(avctx, AV_LOG_ERROR, "Invalid band header sequence!\n");
291  return AVERROR_INVALIDDATA;
292  }
293 
294  band->is_empty = get_bits1(&ctx->gb);
295  if (!band->is_empty) {
296  int old_blk_size = band->blk_size;
297  /* skip header size
298  * If header size is not given, header size is 4 bytes. */
299  if (get_bits1(&ctx->gb))
300  skip_bits(&ctx->gb, 16);
301 
302  band->is_halfpel = get_bits(&ctx->gb, 2);
303  if (band->is_halfpel >= 2) {
304  av_log(avctx, AV_LOG_ERROR, "Invalid/unsupported mv resolution: %d!\n",
305  band->is_halfpel);
306  return AVERROR_INVALIDDATA;
307  }
308 #if IVI4_STREAM_ANALYSER
309  if (!band->is_halfpel)
310  ctx->uses_fullpel = 1;
311 #endif
312 
313  band->checksum_present = get_bits1(&ctx->gb);
314  if (band->checksum_present)
315  band->checksum = get_bits(&ctx->gb, 16);
316 
317  indx = get_bits(&ctx->gb, 2);
318  if (indx == 3) {
319  av_log(avctx, AV_LOG_ERROR, "Invalid block size!\n");
320  return AVERROR_INVALIDDATA;
321  }
322  band->mb_size = 16 >> indx;
323  band->blk_size = 8 >> (indx >> 1);
324 
325  band->inherit_mv = get_bits1(&ctx->gb);
326  band->inherit_qdelta = get_bits1(&ctx->gb);
327 
328  band->glob_quant = get_bits(&ctx->gb, 5);
329 
330  if (!get_bits1(&ctx->gb) || ctx->frame_type == FRAMETYPE_INTRA) {
331  transform_id = get_bits(&ctx->gb, 5);
332  if (transform_id >= FF_ARRAY_ELEMS(transforms) ||
333  !transforms[transform_id].inv_trans) {
334  avpriv_request_sample(avctx, "Transform %d", transform_id);
335  return AVERROR_PATCHWELCOME;
336  }
337  if ((transform_id >= 7 && transform_id <= 9) ||
338  transform_id == 17) {
339  avpriv_request_sample(avctx, "DCT transform");
340  return AVERROR_PATCHWELCOME;
341  }
342 
343 #if IVI4_STREAM_ANALYSER
344  if ((transform_id >= 0 && transform_id <= 2) || transform_id == 10)
345  ctx->uses_haar = 1;
346 #endif
347 
348  band->inv_transform = transforms[transform_id].inv_trans;
349  band->dc_transform = transforms[transform_id].dc_trans;
350  band->is_2d_trans = transforms[transform_id].is_2d_trans;
351  if (transform_id < 10)
352  band->transform_size = 8;
353  else
354  band->transform_size = 4;
355 
356  if (band->blk_size != band->transform_size)
357  return AVERROR_INVALIDDATA;
358 
359  scan_indx = get_bits(&ctx->gb, 4);
360  if (scan_indx == 15) {
361  av_log(avctx, AV_LOG_ERROR, "Custom scan pattern encountered!\n");
362  return AVERROR_INVALIDDATA;
363  }
364  if (scan_indx > 4 && scan_indx < 10) {
365  if (band->blk_size != 4)
366  return AVERROR_INVALIDDATA;
367  } else if (band->blk_size != 8)
368  return AVERROR_INVALIDDATA;
369 
370  band->scan = scan_index_to_tab[scan_indx];
371 
372  band->quant_mat = get_bits(&ctx->gb, 5);
374 
375  if (band->quant_mat == 31)
376  av_log(avctx, AV_LOG_ERROR,
377  "Custom quant matrix encountered!\n");
378  else
379  avpriv_request_sample(avctx, "Quantization matrix %d",
380  band->quant_mat);
381  band->quant_mat = -1;
382  return AVERROR_INVALIDDATA;
383  }
384  } else {
385  if (old_blk_size != band->blk_size) {
386  av_log(avctx, AV_LOG_ERROR,
387  "The band block size does not match the configuration "
388  "inherited\n");
389  return AVERROR_INVALIDDATA;
390  }
391  if (band->quant_mat < 0) {
392  av_log(avctx, AV_LOG_ERROR, "Invalid quant_mat inherited\n");
393  return AVERROR_INVALIDDATA;
394  }
395  }
396 
397  /* decode block huffman codebook */
398  if (!get_bits1(&ctx->gb))
399  band->blk_vlc.tab = ctx->blk_vlc.tab;
400  else
401  if (ff_ivi_dec_huff_desc(&ctx->gb, 1, IVI_BLK_HUFF,
402  &band->blk_vlc, avctx))
403  return AVERROR_INVALIDDATA;
404 
405  /* select appropriate rvmap table for this band */
406  band->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
407 
408  /* decode rvmap probability corrections if any */
409  band->num_corr = 0; /* there is no corrections */
410  if (get_bits1(&ctx->gb)) {
411  band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */
412  if (band->num_corr > 61) {
413  av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n",
414  band->num_corr);
415  return AVERROR_INVALIDDATA;
416  }
417 
418  /* read correction pairs */
419  for (i = 0; i < band->num_corr * 2; i++)
420  band->corr[i] = get_bits(&ctx->gb, 8);
421  }
422  }
423 
424  if (band->blk_size == 8) {
426  band->inter_base = &ivi4_quant_8x8_inter[quant_index_to_tab[band->quant_mat]][0];
427  } else {
429  band->inter_base = &ivi4_quant_4x4_inter[quant_index_to_tab[band->quant_mat]][0];
430  }
431 
432  /* Indeo 4 doesn't use scale tables */
433  band->intra_scale = NULL;
434  band->inter_scale = NULL;
435 
436  align_get_bits(&ctx->gb);
437 
438  return 0;
439 }
440 
441 
453  IVITile *tile, AVCodecContext *avctx)
454 {
455  int x, y, mv_x, mv_y, mv_delta, offs, mb_offset, blks_per_mb,
456  mv_scale, mb_type_bits;
457  IVIMbInfo *mb, *ref_mb;
458  int row_offset = band->mb_size * band->pitch;
459 
460  mb = tile->mbs;
461  ref_mb = tile->ref_mbs;
462  offs = tile->ypos * band->pitch + tile->xpos;
463 
464  blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
465  mb_type_bits = ctx->frame_type == FRAMETYPE_BIDIR ? 2 : 1;
466 
467  /* scale factor for motion vectors */
468  mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
469  mv_x = mv_y = 0;
470 
471  for (y = tile->ypos; y < tile->ypos + tile->height; y += band->mb_size) {
472  mb_offset = offs;
473 
474  for (x = tile->xpos; x < tile->xpos + tile->width; x += band->mb_size) {
475  mb->xpos = x;
476  mb->ypos = y;
477  mb->buf_offs = mb_offset;
478 
479  if (get_bits1(&ctx->gb)) {
480  if (ctx->frame_type == FRAMETYPE_INTRA) {
481  av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
482  return AVERROR_INVALIDDATA;
483  }
484  mb->type = 1; /* empty macroblocks are always INTER */
485  mb->cbp = 0; /* all blocks are empty */
486 
487  mb->q_delta = 0;
488  if (!band->plane && !band->band_num && ctx->in_q) {
489  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
490  IVI_VLC_BITS, 1);
491  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
492  }
493 
494  mb->mv_x = mb->mv_y = 0; /* no motion vector coded */
495  if (band->inherit_mv && ref_mb) {
496  /* motion vector inheritance */
497  if (mv_scale) {
498  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
499  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
500  } else {
501  mb->mv_x = ref_mb->mv_x;
502  mb->mv_y = ref_mb->mv_y;
503  }
504  }
505  } else {
506  if (band->inherit_mv) {
507  /* copy mb_type from corresponding reference mb */
508  if (!ref_mb)
509  return AVERROR_INVALIDDATA;
510  mb->type = ref_mb->type;
511  } else if (ctx->frame_type == FRAMETYPE_INTRA ||
512  ctx->frame_type == FRAMETYPE_INTRA1) {
513  mb->type = 0; /* mb_type is always INTRA for intra-frames */
514  } else {
515  mb->type = get_bits(&ctx->gb, mb_type_bits);
516  }
517 
518  mb->cbp = get_bits(&ctx->gb, blks_per_mb);
519 
520  mb->q_delta = 0;
521  if (band->inherit_qdelta) {
522  if (ref_mb) mb->q_delta = ref_mb->q_delta;
523  } else if (mb->cbp || (!band->plane && !band->band_num &&
524  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  if (!mb->type) {
531  mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */
532  } else {
533  if (band->inherit_mv) {
534  if (ref_mb)
535  /* motion vector inheritance */
536  if (mv_scale) {
537  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
538  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
539  } else {
540  mb->mv_x = ref_mb->mv_x;
541  mb->mv_y = ref_mb->mv_y;
542  }
543  } else {
544  /* decode motion vector deltas */
545  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
546  IVI_VLC_BITS, 1);
547  mv_y += IVI_TOSIGNED(mv_delta);
548  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
549  IVI_VLC_BITS, 1);
550  mv_x += IVI_TOSIGNED(mv_delta);
551  mb->mv_x = mv_x;
552  mb->mv_y = mv_y;
553  }
554  }
555  }
556 
557  mb++;
558  if (ref_mb)
559  ref_mb++;
560  mb_offset += band->mb_size;
561  }
562 
563  offs += row_offset;
564  }
565 
566  align_get_bits(&ctx->gb);
567 
568  return 0;
569 }
570 
571 
578 {
579  switch (ctx->prev_frame_type) {
580  case FRAMETYPE_INTRA:
581  case FRAMETYPE_INTRA1:
582  case FRAMETYPE_INTER:
583  ctx->buf_switch ^= 1;
584  ctx->dst_buf = ctx->buf_switch;
585  ctx->ref_buf = ctx->buf_switch ^ 1;
586  break;
588  break;
589  }
590 
591  switch (ctx->frame_type) {
592  case FRAMETYPE_INTRA:
593  case FRAMETYPE_INTRA1:
594  ctx->buf_switch = 0;
595  /* FALLTHROUGH */
596  case FRAMETYPE_INTER:
597  ctx->dst_buf = ctx->buf_switch;
598  ctx->ref_buf = ctx->buf_switch ^ 1;
599  break;
602  case FRAMETYPE_NULL_LAST:
603  break;
604  }
605 }
606 
607 
609 {
610  return ctx->frame_type < FRAMETYPE_NULL_FIRST;
611 }
612 
613 
615 {
616  IVI45DecContext *ctx = avctx->priv_data;
617 
619 
620  /* copy rvmap tables in our context so we can apply changes to them */
621  memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
622 
623  /* Force allocation of the internal buffers */
624  /* during picture header decoding. */
625  ctx->pic_conf.pic_width = 0;
626  ctx->pic_conf.pic_height = 0;
627 
628  avctx->pix_fmt = AV_PIX_FMT_YUV410P;
629 
635 
636  return 0;
637 }
638 
639 
641  .name = "indeo4",
642  .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 4"),
643  .type = AVMEDIA_TYPE_VIDEO,
644  .id = AV_CODEC_ID_INDEO4,
645  .priv_data_size = sizeof(IVI45DecContext),
646  .init = decode_init,
649  .capabilities = CODEC_CAP_DR1,
650 };
int is_empty
= 1 if this band doesn'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:204
uint8_t type
macroblock type: 0 - INTRA, 1 - INTER
Definition: ivi_common.h:102
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: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
av_cold int ff_ivi_decode_close(AVCodecContext *avctx)
Close Indeo5 decoder and clean up its context.
Definition: ivi_common.c:1048
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:161
Huffman table is used for coding macroblocks.
Definition: ivi_common.h:63
#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:202
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:240
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:243
static void skip_bits_long(GetBitContext *s, int n)
Definition: get_bits.h:199
static const struct @29 transforms[18]
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
int(* decode_mb_info)(struct IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx)
Definition: ivi_common.h:245
int dst_buf
buffer index for the currently decoded frame
Definition: ivi_common.h:218
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
DSP functions (inverse transforms, motion compensations, wavelet recompostion) for Indeo Video Intera...
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1247
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:194
#define FF_ARRAY_ELEMS(a)
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)
IVIPicConfig pic_conf
Definition: ivi_common.h:214
AVCodec.
Definition: avcodec.h:2755
int quant_mat
dequant matrix index
Definition: ivi_common.h:149
av_cold int ff_ivi_init_planes(IVIPlaneDesc *planes, const IVIPicConfig *cfg)
Initialize planes (prepares descriptors, allocates buffers etc).
Definition: ivi_common.c:279
empty frame with no data
Definition: indeo4.c:46
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
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
Definition: mimic.c:269
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:193
VLC * tab
index of one of the predefined tables or "7" for custom one
Definition: ivi_common.h:54
#define av_cold
Definition: attributes.h:66
uint8_t pic_glob_quant
Definition: ivi_common.h:228
const uint16_t * inter_base
quantization matrix for inter blocks
Definition: ivi_common.h:169
uint16_t pic_height
Definition: ivi_common.h:188
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_common.h:146
static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Decode Indeo 4 band header.
Definition: indeo4.c:281
uint16_t tile_height
Definition: ivi_common.h:192
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:711
GetBitContext gb
Definition: ivi_common.h:198
uint16_t chroma_width
Definition: ivi_common.h:189
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:315
uint16_t checksum
frame checksum
Definition: ivi_common.h:212
bitstream reader API header.
uint16_t pic_width
Definition: ivi_common.h:187
static const uint16_t ivi4_quant_4x4_inter[5][16]
Definition: indeo4data.h:308
IVIPlaneDesc planes[3]
color planes
Definition: ivi_common.h:215
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_common.h:168
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_common.h:229
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:1111
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:123
uint8_t corr[61 *2]
rvmap correction pairs
Definition: ivi_common.h:156
static int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
compare some properties of two pictures
Definition: ivi_common.h:253
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_common.h:199
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
#define IVI_VLC_BITS
max number of bits of the ivi's huffman codes
Definition: ivi_common.h:36
uint8_t in_q
flag for explicitly stored quantiser delta
Definition: ivi_common.h:227
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:142
intra frame with slightly different bitstream coding
Definition: indeo4.c:42
This file contains structures and macros shared by both Indeo4 and Indeo5 decoders.
empty frame with no data
Definition: indeo4.c:47
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:684
int ref_buf
inter frame reference buffer index
Definition: ivi_common.h:219
DCTransformPtr * dc_transform
Definition: ivi_common.h:163
void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:148
static const uint8_t * scan_index_to_tab[15]
Definition: indeo4data.h:63
const char * name
Name of the codec implementation.
Definition: avcodec.h:2762
av_cold void ff_ivi_init_static_vlc(void)
Initialize static codes used for macroblock and block decoding.
Definition: ivi_common.c:155
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_common.h:147
uint32_t frame_num
Definition: ivi_common.h:201
int(* decode_band_hdr)(struct IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Definition: ivi_common.h:244
int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ivi_common.c:947
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:577
const uint8_t * inter_scale
quantization coefficient for inter blocks
Definition: ivi_common.h:171
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:522
uint16_t chroma_height
Definition: ivi_common.h:190
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:526
#define AVERROR_PATCHWELCOME
Not yet implemented in Libav, patches welcome.
Definition: error.h:57
uint16_t tile_width
Definition: ivi_common.h:191
NULL
Definition: eval.c:55
int ypos
Definition: ivi_common.h:115
IVIHuffTab mb_vlc
current macroblock table descriptor
Definition: ivi_common.h:222
int is_2d_trans
1 indicates that the two-dimensional inverse transform is used
Definition: ivi_common.h:164
Libavcodec external API header.
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:1054
static void close(AVCodecParserContext *s)
Definition: h264_parser.c:489
int num_corr
number of correction entries
Definition: ivi_common.h:155
information for Indeo tile
Definition: ivi_common.h:113
int(* is_nonnull_frame)(struct IVI45DecContext *ctx)
Definition: ivi_common.h:247
int buf_switch
used to switch between three buffers
Definition: ivi_common.h:217
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:271
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:71
uint8_t in_imf
Definition: ivi_common.h:226
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:263
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
static const uint16_t ivi4_quant_4x4_intra[5][16]
Definition: indeo4data.h:275
droppable P-frame
Definition: indeo4.c:45
void(* switch_buffers)(struct IVI45DecContext *ctx)
Definition: ivi_common.h:246
IVIBandDesc * bands
array of band descriptors
Definition: ivi_common.h:182
int32_t checksum
for debug purposes
Definition: ivi_common.h:165
int rvmap_sel
rvmap table selector
Definition: ivi_common.h:157
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
non-droppable P-frame
Definition: indeo4.c:43
IVIMbInfo * ref_mbs
ptr to the macroblock descriptors of the reference tile
Definition: ivi_common.h:123
int xpos
Definition: ivi_common.h:114
IVIHuffTab blk_vlc
current block table descriptor
Definition: ivi_common.h:223
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_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:162
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
bidirectional frame
Definition: indeo4.c:44
static int is_nonnull_frame(IVI45DecContext *ctx)
Definition: indeo4.c:608
static av_cold int init(AVCodecParserContext *s)
Definition: h264_parser.c:498
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:452
const uint8_t * scan
ptr to the scan pattern
Definition: ivi_common.h:151
void * priv_data
Definition: avcodec.h:1090
int width
Definition: ivi_common.h:116
static av_cold int decode_init(AVCodecContext *avctx)
Definition: indeo4.c:614
int checksum_present
Definition: ivi_common.h:166
VLC_TYPE(* table)[2]
code, bits
Definition: get_bits.h:66
static int ivi_scale_mv(int mv, int mv_scale)
scale motion vector
Definition: ivi_common.h:272
int transp_status
transparency mode status: 1 - enabled
Definition: ivi_common.h:206
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:416
int16_t ypos
Definition: ivi_common.h:100
int prev_frame_type
frame type of the previous frame
Definition: ivi_common.h:203
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:153
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_common.h:170
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:269
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
uint8_t rvmap_sel
Definition: ivi_common.h:225
AVCodec ff_indeo4_decoder
Definition: indeo4.c:640
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