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 
37 #define IVI4_PIC_SIZE_ESC 7
38 
39 
40 static const struct {
44 } transforms[18] = {
52  { NULL, NULL, 0 }, /* inverse DCT 8x8 */
53  { NULL, NULL, 0 }, /* inverse DCT 8x1 */
54  { NULL, NULL, 0 }, /* inverse DCT 1x8 */
57  { NULL, NULL, 0 }, /* no transform 4x4 */
62  { NULL, NULL, 0 }, /* inverse DCT 4x4 */
63 };
64 
76 {
77  int i;
78 
79  switch (get_bits(gb, 2)) {
80  case 3:
81  return 1;
82  case 2:
83  for (i = 0; i < 4; i++)
84  if (get_bits(gb, 2) != 3)
85  return 0;
86  return 4;
87  default:
88  return 0;
89  }
90 }
91 
92 static inline int scale_tile_size(int def_size, int size_factor)
93 {
94  return size_factor == 15 ? def_size : (size_factor + 1) << 5;
95 }
96 
105 {
106  int pic_size_indx, i, p;
107  IVIPicConfig pic_conf;
108 
109  if (get_bits(&ctx->gb, 18) != 0x3FFF8) {
110  av_log(avctx, AV_LOG_ERROR, "Invalid picture start code!\n");
111  return AVERROR_INVALIDDATA;
112  }
113 
114  ctx->prev_frame_type = ctx->frame_type;
115  ctx->frame_type = get_bits(&ctx->gb, 3);
116  if (ctx->frame_type == 7) {
117  av_log(avctx, AV_LOG_ERROR, "Invalid frame type: %d\n", ctx->frame_type);
118  return AVERROR_INVALIDDATA;
119  }
120 
121 #if IVI4_STREAM_ANALYSER
122  if (ctx->frame_type == IVI4_FRAMETYPE_BIDIR)
123  ctx->has_b_frames = 1;
124 #endif
125 
126  ctx->transp_status = get_bits1(&ctx->gb);
127 #if IVI4_STREAM_ANALYSER
128  if (ctx->transp_status) {
129  ctx->has_transp = 1;
130  }
131 #endif
132 
133  /* unknown bit: Mac decoder ignores this bit, XANIM returns error */
134  if (get_bits1(&ctx->gb)) {
135  av_log(avctx, AV_LOG_ERROR, "Sync bit is set!\n");
136  return AVERROR_INVALIDDATA;
137  }
138 
139  ctx->data_size = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 24) : 0;
140 
141  /* null frames don't contain anything else so we just return */
143  av_dlog(avctx, "Null frame encountered!\n");
144  return 0;
145  }
146 
147  /* Check key lock status. If enabled - ignore lock word. */
148  /* Usually we have to prompt the user for the password, but */
149  /* we don't do that because Indeo 4 videos can be decoded anyway */
150  if (get_bits1(&ctx->gb)) {
151  skip_bits_long(&ctx->gb, 32);
152  av_dlog(avctx, "Password-protected clip!\n");
153  }
154 
155  pic_size_indx = get_bits(&ctx->gb, 3);
156  if (pic_size_indx == IVI4_PIC_SIZE_ESC) {
157  pic_conf.pic_height = get_bits(&ctx->gb, 16);
158  pic_conf.pic_width = get_bits(&ctx->gb, 16);
159  } else {
160  pic_conf.pic_height = ivi4_common_pic_sizes[pic_size_indx * 2 + 1];
161  pic_conf.pic_width = ivi4_common_pic_sizes[pic_size_indx * 2 ];
162  }
163 
164  /* Decode tile dimensions. */
165  if (get_bits1(&ctx->gb)) {
166  pic_conf.tile_height = scale_tile_size(pic_conf.pic_height, get_bits(&ctx->gb, 4));
167  pic_conf.tile_width = scale_tile_size(pic_conf.pic_width, get_bits(&ctx->gb, 4));
168 #if IVI4_STREAM_ANALYSER
169  ctx->uses_tiling = 1;
170 #endif
171  } else {
172  pic_conf.tile_height = pic_conf.pic_height;
173  pic_conf.tile_width = pic_conf.pic_width;
174  }
175 
176  /* Decode chroma subsampling. We support only 4:4 aka YVU9. */
177  if (get_bits(&ctx->gb, 2)) {
178  av_log(avctx, AV_LOG_ERROR, "Only YVU9 picture format is supported!\n");
179  return AVERROR_INVALIDDATA;
180  }
181  pic_conf.chroma_height = (pic_conf.pic_height + 3) >> 2;
182  pic_conf.chroma_width = (pic_conf.pic_width + 3) >> 2;
183 
184  /* decode subdivision of the planes */
185  pic_conf.luma_bands = decode_plane_subdivision(&ctx->gb);
186  if (pic_conf.luma_bands)
187  pic_conf.chroma_bands = decode_plane_subdivision(&ctx->gb);
188  ctx->is_scalable = pic_conf.luma_bands != 1 || pic_conf.chroma_bands != 1;
189  if (ctx->is_scalable && (pic_conf.luma_bands != 4 || pic_conf.chroma_bands != 1)) {
190  av_log(avctx, AV_LOG_ERROR, "Scalability: unsupported subdivision! Luma bands: %d, chroma bands: %d\n",
191  pic_conf.luma_bands, pic_conf.chroma_bands);
192  return AVERROR_INVALIDDATA;
193  }
194 
195  /* check if picture layout was changed and reallocate buffers */
196  if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf)) {
197  if (ff_ivi_init_planes(ctx->planes, &pic_conf, 1)) {
198  av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
199  ctx->pic_conf.luma_bands = 0;
200  return AVERROR(ENOMEM);
201  }
202 
203  ctx->pic_conf = pic_conf;
204 
205  /* set default macroblock/block dimensions */
206  for (p = 0; p <= 2; p++) {
207  for (i = 0; i < (!p ? pic_conf.luma_bands : pic_conf.chroma_bands); i++) {
208  ctx->planes[p].bands[i].mb_size = !p ? (!ctx->is_scalable ? 16 : 8) : 4;
209  ctx->planes[p].bands[i].blk_size = !p ? 8 : 4;
210  }
211  }
212 
214  ctx->pic_conf.tile_height)) {
215  av_log(avctx, AV_LOG_ERROR,
216  "Couldn't reallocate internal structures!\n");
217  return AVERROR(ENOMEM);
218  }
219  }
220 
221  ctx->frame_num = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 20) : 0;
222 
223  /* skip decTimeEst field if present */
224  if (get_bits1(&ctx->gb))
225  skip_bits(&ctx->gb, 8);
226 
227  /* decode macroblock and block huffman codebooks */
228  if (ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_MB_HUFF, &ctx->mb_vlc, avctx) ||
229  ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_BLK_HUFF, &ctx->blk_vlc, avctx))
230  return AVERROR_INVALIDDATA;
231 
232  ctx->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
233 
234  ctx->in_imf = get_bits1(&ctx->gb);
235  ctx->in_q = get_bits1(&ctx->gb);
236 
237  ctx->pic_glob_quant = get_bits(&ctx->gb, 5);
238 
239  /* TODO: ignore this parameter if unused */
240  ctx->unknown1 = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 0;
241 
242  ctx->checksum = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 16) : 0;
243 
244  /* skip picture header extension if any */
245  while (get_bits1(&ctx->gb)) {
246  av_dlog(avctx, "Pic hdr extension encountered!\n");
247  skip_bits(&ctx->gb, 8);
248  }
249 
250  if (get_bits1(&ctx->gb)) {
251  av_log(avctx, AV_LOG_ERROR, "Bad blocks bits encountered!\n");
252  }
253 
254  align_get_bits(&ctx->gb);
255 
256  return 0;
257 }
258 
259 
269  AVCodecContext *avctx)
270 {
271  int plane, band_num, indx, transform_id, scan_indx;
272  int i;
273 
274  plane = get_bits(&ctx->gb, 2);
275  band_num = get_bits(&ctx->gb, 4);
276  if (band->plane != plane || band->band_num != band_num) {
277  av_log(avctx, AV_LOG_ERROR, "Invalid band header sequence!\n");
278  return AVERROR_INVALIDDATA;
279  }
280 
281  band->is_empty = get_bits1(&ctx->gb);
282  if (!band->is_empty) {
283  int old_blk_size = band->blk_size;
284  /* skip header size
285  * If header size is not given, header size is 4 bytes. */
286  if (get_bits1(&ctx->gb))
287  skip_bits(&ctx->gb, 16);
288 
289  band->is_halfpel = get_bits(&ctx->gb, 2);
290  if (band->is_halfpel >= 2) {
291  av_log(avctx, AV_LOG_ERROR, "Invalid/unsupported mv resolution: %d!\n",
292  band->is_halfpel);
293  return AVERROR_INVALIDDATA;
294  }
295 #if IVI4_STREAM_ANALYSER
296  if (!band->is_halfpel)
297  ctx->uses_fullpel = 1;
298 #endif
299 
300  band->checksum_present = get_bits1(&ctx->gb);
301  if (band->checksum_present)
302  band->checksum = get_bits(&ctx->gb, 16);
303 
304  indx = get_bits(&ctx->gb, 2);
305  if (indx == 3) {
306  av_log(avctx, AV_LOG_ERROR, "Invalid block size!\n");
307  return AVERROR_INVALIDDATA;
308  }
309  band->mb_size = 16 >> indx;
310  band->blk_size = 8 >> (indx >> 1);
311 
312  band->inherit_mv = get_bits1(&ctx->gb);
313  band->inherit_qdelta = get_bits1(&ctx->gb);
314 
315  band->glob_quant = get_bits(&ctx->gb, 5);
316 
317  if (!get_bits1(&ctx->gb) || ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
318  transform_id = get_bits(&ctx->gb, 5);
319  if (transform_id >= FF_ARRAY_ELEMS(transforms) ||
320  !transforms[transform_id].inv_trans) {
321  avpriv_request_sample(avctx, "Transform %d", transform_id);
322  return AVERROR_PATCHWELCOME;
323  }
324  if ((transform_id >= 7 && transform_id <= 9) ||
325  transform_id == 17) {
326  avpriv_request_sample(avctx, "DCT transform");
327  return AVERROR_PATCHWELCOME;
328  }
329 
330 #if IVI4_STREAM_ANALYSER
331  if ((transform_id >= 0 && transform_id <= 2) || transform_id == 10)
332  ctx->uses_haar = 1;
333 #endif
334 
335  band->inv_transform = transforms[transform_id].inv_trans;
336  band->dc_transform = transforms[transform_id].dc_trans;
337  band->is_2d_trans = transforms[transform_id].is_2d_trans;
338  if (transform_id < 10)
339  band->transform_size = 8;
340  else
341  band->transform_size = 4;
342 
343  if (band->blk_size != band->transform_size)
344  return AVERROR_INVALIDDATA;
345 
346  scan_indx = get_bits(&ctx->gb, 4);
347  if (scan_indx == 15) {
348  av_log(avctx, AV_LOG_ERROR, "Custom scan pattern encountered!\n");
349  return AVERROR_INVALIDDATA;
350  }
351  if (scan_indx > 4 && scan_indx < 10) {
352  if (band->blk_size != 4)
353  return AVERROR_INVALIDDATA;
354  } else if (band->blk_size != 8)
355  return AVERROR_INVALIDDATA;
356 
357  band->scan = scan_index_to_tab[scan_indx];
358 
359  band->quant_mat = get_bits(&ctx->gb, 5);
361 
362  if (band->quant_mat == 31)
363  av_log(avctx, AV_LOG_ERROR,
364  "Custom quant matrix encountered!\n");
365  else
366  avpriv_request_sample(avctx, "Quantization matrix %d",
367  band->quant_mat);
368  band->quant_mat = -1;
369  return AVERROR_INVALIDDATA;
370  }
371  } else {
372  if (old_blk_size != band->blk_size) {
373  av_log(avctx, AV_LOG_ERROR,
374  "The band block size does not match the configuration "
375  "inherited\n");
376  return AVERROR_INVALIDDATA;
377  }
378  if (band->quant_mat < 0) {
379  av_log(avctx, AV_LOG_ERROR, "Invalid quant_mat inherited\n");
380  return AVERROR_INVALIDDATA;
381  }
382  }
383 
384  /* decode block huffman codebook */
385  if (!get_bits1(&ctx->gb))
386  band->blk_vlc.tab = ctx->blk_vlc.tab;
387  else
388  if (ff_ivi_dec_huff_desc(&ctx->gb, 1, IVI_BLK_HUFF,
389  &band->blk_vlc, avctx))
390  return AVERROR_INVALIDDATA;
391 
392  /* select appropriate rvmap table for this band */
393  band->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
394 
395  /* decode rvmap probability corrections if any */
396  band->num_corr = 0; /* there is no corrections */
397  if (get_bits1(&ctx->gb)) {
398  band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */
399  if (band->num_corr > 61) {
400  av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n",
401  band->num_corr);
402  return AVERROR_INVALIDDATA;
403  }
404 
405  /* read correction pairs */
406  for (i = 0; i < band->num_corr * 2; i++)
407  band->corr[i] = get_bits(&ctx->gb, 8);
408  }
409  }
410 
411  if (band->blk_size == 8) {
413  band->inter_base = &ivi4_quant_8x8_inter[quant_index_to_tab[band->quant_mat]][0];
414  } else {
416  band->inter_base = &ivi4_quant_4x4_inter[quant_index_to_tab[band->quant_mat]][0];
417  }
418 
419  /* Indeo 4 doesn't use scale tables */
420  band->intra_scale = NULL;
421  band->inter_scale = NULL;
422 
423  align_get_bits(&ctx->gb);
424 
425  return 0;
426 }
427 
428 
440  IVITile *tile, AVCodecContext *avctx)
441 {
442  int x, y, mv_x, mv_y, mv_delta, offs, mb_offset, blks_per_mb,
443  mv_scale, mb_type_bits;
444  IVIMbInfo *mb, *ref_mb;
445  int row_offset = band->mb_size * band->pitch;
446 
447  mb = tile->mbs;
448  ref_mb = tile->ref_mbs;
449  offs = tile->ypos * band->pitch + tile->xpos;
450 
451  blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
452  mb_type_bits = ctx->frame_type == IVI4_FRAMETYPE_BIDIR ? 2 : 1;
453 
454  /* scale factor for motion vectors */
455  mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
456  mv_x = mv_y = 0;
457 
458  for (y = tile->ypos; y < tile->ypos + tile->height; y += band->mb_size) {
459  mb_offset = offs;
460 
461  for (x = tile->xpos; x < tile->xpos + tile->width; x += band->mb_size) {
462  mb->xpos = x;
463  mb->ypos = y;
464  mb->buf_offs = mb_offset;
465  mb->b_mv_x =
466  mb->b_mv_y = 0;
467 
468  if (get_bits1(&ctx->gb)) {
469  if (ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
470  av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
471  return AVERROR_INVALIDDATA;
472  }
473  mb->type = 1; /* empty macroblocks are always INTER */
474  mb->cbp = 0; /* all blocks are empty */
475 
476  mb->q_delta = 0;
477  if (!band->plane && !band->band_num && ctx->in_q) {
478  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
479  IVI_VLC_BITS, 1);
480  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
481  }
482 
483  mb->mv_x = mb->mv_y = 0; /* no motion vector coded */
484  if (band->inherit_mv && ref_mb) {
485  /* motion vector inheritance */
486  if (mv_scale) {
487  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
488  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
489  } else {
490  mb->mv_x = ref_mb->mv_x;
491  mb->mv_y = ref_mb->mv_y;
492  }
493  }
494  } else {
495  if (band->inherit_mv) {
496  /* copy mb_type from corresponding reference mb */
497  if (!ref_mb)
498  return AVERROR_INVALIDDATA;
499  mb->type = ref_mb->type;
500  } else if (ctx->frame_type == IVI4_FRAMETYPE_INTRA ||
502  mb->type = 0; /* mb_type is always INTRA for intra-frames */
503  } else {
504  mb->type = get_bits(&ctx->gb, mb_type_bits);
505  }
506 
507  mb->cbp = get_bits(&ctx->gb, blks_per_mb);
508 
509  mb->q_delta = 0;
510  if (band->inherit_qdelta) {
511  if (ref_mb) mb->q_delta = ref_mb->q_delta;
512  } else if (mb->cbp || (!band->plane && !band->band_num &&
513  ctx->in_q)) {
514  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
515  IVI_VLC_BITS, 1);
516  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
517  }
518 
519  if (!mb->type) {
520  mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */
521  } else {
522  if (band->inherit_mv) {
523  if (ref_mb)
524  /* motion vector inheritance */
525  if (mv_scale) {
526  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
527  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
528  } else {
529  mb->mv_x = ref_mb->mv_x;
530  mb->mv_y = ref_mb->mv_y;
531  }
532  } else {
533  /* decode motion vector deltas */
534  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
535  IVI_VLC_BITS, 1);
536  mv_y += IVI_TOSIGNED(mv_delta);
537  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
538  IVI_VLC_BITS, 1);
539  mv_x += IVI_TOSIGNED(mv_delta);
540  mb->mv_x = mv_x;
541  mb->mv_y = mv_y;
542  if (mb->type == 3) {
543  mv_delta = get_vlc2(&ctx->gb,
544  ctx->mb_vlc.tab->table,
545  IVI_VLC_BITS, 1);
546  mv_y += IVI_TOSIGNED(mv_delta);
547  mv_delta = get_vlc2(&ctx->gb,
548  ctx->mb_vlc.tab->table,
549  IVI_VLC_BITS, 1);
550  mv_x += IVI_TOSIGNED(mv_delta);
551  mb->b_mv_x = -mv_x;
552  mb->b_mv_y = -mv_y;
553  }
554  }
555  if (mb->type == 2) {
556  mb->b_mv_x = -mb->mv_x;
557  mb->b_mv_y = -mb->mv_y;
558  mb->mv_x = 0;
559  mb->mv_y = 0;
560  }
561  }
562  }
563 
564  mb++;
565  if (ref_mb)
566  ref_mb++;
567  mb_offset += band->mb_size;
568  }
569 
570  offs += row_offset;
571  }
572 
573  align_get_bits(&ctx->gb);
574 
575  return 0;
576 }
577 
578 
585 {
586  int is_prev_ref = 0, is_ref = 0;
587 
588  switch (ctx->prev_frame_type) {
592  is_prev_ref = 1;
593  break;
594  }
595 
596  switch (ctx->frame_type) {
600  is_ref = 1;
601  break;
602  }
603 
604  if (is_prev_ref && is_ref) {
605  FFSWAP(int, ctx->dst_buf, ctx->ref_buf);
606  } else if (is_prev_ref) {
607  FFSWAP(int, ctx->ref_buf, ctx->b_ref_buf);
608  FFSWAP(int, ctx->dst_buf, ctx->ref_buf);
609  }
610 }
611 
612 
614 {
616 }
617 
618 
620 {
621  IVI45DecContext *ctx = avctx->priv_data;
622 
624 
625  /* copy rvmap tables in our context so we can apply changes to them */
626  memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
627 
628  /* Force allocation of the internal buffers */
629  /* during picture header decoding. */
630  ctx->pic_conf.pic_width = 0;
631  ctx->pic_conf.pic_height = 0;
632 
633  avctx->pix_fmt = AV_PIX_FMT_YUV410P;
634 
640 
641  ctx->is_indeo4 = 1;
642 
643  ctx->dst_buf = 0;
644  ctx->ref_buf = 1;
645  ctx->b_ref_buf = 3; /* buffer 2 is used for scalability mode */
646  ctx->p_frame = av_frame_alloc();
647  if (!ctx->p_frame)
648  return AVERROR(ENOMEM);
649 
650  return 0;
651 }
652 
653 
655  .name = "indeo4",
656  .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 4"),
657  .type = AVMEDIA_TYPE_VIDEO,
658  .id = AV_CODEC_ID_INDEO4,
659  .priv_data_size = sizeof(IVI45DecContext),
660  .init = decode_init,
663  .capabilities = CODEC_CAP_DR1,
664 };
int is_empty
= 1 if this band doesn't contain any data
Definition: ivi_common.h:158
uint32_t data_size
size of the frame data in bytes from picture header
Definition: ivi_common.h:220
uint8_t type
macroblock type: 0 - INTRA, 1 - INTER
Definition: ivi_common.h:115
static const uint16_t ivi4_quant_8x8_intra[9][64]
Indeo 4 dequant tables.
Definition: indeo4data.h:90
static int scale_tile_size(int def_size, int size_factor)
Definition: indeo4.c:92
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:1143
static av_always_inline void mv_scale(Mv *dst, Mv *src, int td, int tb)
Definition: hevc_mvs.c:140
empty frame with no data
Definition: ivi_common.h:45
This file contains data needed for the Indeo 4 decoder.
InvTransformPtr * inv_transform
Definition: ivi_common.h:177
#define IVI4_PIC_SIZE_ESC
Definition: indeo4.c:37
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:228
static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
Decode Indeo 4 picture header.
Definition: indeo4.c:104
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:75
int(* decode_pic_hdr)(struct IVI45DecContext *ctx, AVCodecContext *avctx)
Definition: ivi_common.h:260
static void skip_bits_long(GetBitContext *s, int n)
Definition: get_bits.h:199
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_common.h:121
int(* decode_mb_info)(struct IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx)
Definition: ivi_common.h:262
int dst_buf
buffer index for the currently decoded frame
Definition: ivi_common.h:234
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:1270
int is_halfpel
precision of the motion compensation: 0 - fullpel, 1 - halfpel
Definition: ivi_common.h:161
uint8_t chroma_bands
Definition: ivi_common.h:210
#define FF_ARRAY_ELEMS(a)
int plane
plane number this band belongs to
Definition: ivi_common.h:146
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:230
AVCodec.
Definition: avcodec.h:2812
int quant_mat
dequant matrix index
Definition: ivi_common.h:165
bidirectional frame
Definition: ivi_common.h:43
int8_t b_mv_x
second motion vector (x component)
Definition: ivi_common.h:120
void ff_ivi_put_pixels_8x8(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
Copy the pixels into the frame buffer.
Definition: ivi_dsp.c:741
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
Definition: mimic.c:275
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:209
VLC * tab
index of one of the predefined tables or "7" for custom one
Definition: ivi_common.h:67
#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:57
uint8_t pic_glob_quant
Definition: ivi_common.h:245
const uint16_t * inter_base
quantization matrix for inter blocks
Definition: ivi_common.h:185
uint16_t pic_height
Definition: ivi_common.h:204
static const uint16_t ivi4_common_pic_sizes[14]
standard picture dimensions
Definition: indeo4data.h:38
int inherit_mv
tells if motion vector is inherited from reference macroblock
Definition: ivi_common.h:162
static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Decode Indeo 4 band header.
Definition: indeo4.c:268
uint16_t tile_height
Definition: ivi_common.h:208
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:684
GetBitContext gb
Definition: ivi_common.h:214
uint16_t chroma_width
Definition: ivi_common.h:205
int pitch
pitch associated with the buffers above
Definition: ivi_common.h:157
static const uint16_t ivi4_quant_8x8_inter[9][64]
Definition: indeo4data.h:183
uint8_t cbp
coded block pattern
Definition: ivi_common.h:116
void ff_ivi_row_haar8(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
one-dimensional inverse 8-point Haar transform on rows for Indeo 4
Definition: ivi_dsp.c:315
uint16_t checksum
frame checksum
Definition: ivi_common.h:228
bitstream reader API header.
uint16_t pic_width
Definition: ivi_common.h:203
static const uint16_t ivi4_quant_4x4_inter[5][16]
Definition: indeo4data.h:309
IVIPlaneDesc planes[3]
color planes
Definition: ivi_common.h:231
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:184
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:246
int blk_size
block size
Definition: ivi_common.h:160
const RVMapDesc ff_ivi_rvmap_tabs[9]
Run-value (RLE) tables.
Definition: ivi_common.c:1208
#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:172
static int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
compare some properties of two pictures
Definition: ivi_common.h:275
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:215
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:49
uint8_t in_q
flag for explicitly stored quantiser delta
Definition: ivi_common.h:244
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:145
This file contains structures and macros shared by both Indeo4 and Indeo5 decoders.
DCTransformPtr * dc_trans
Definition: indeo4.c:42
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:235
DCTransformPtr * dc_transform
Definition: ivi_common.h:179
void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:169
static const uint8_t * scan_index_to_tab[15]
Definition: indeo4data.h:64
const char * name
Name of the codec implementation.
Definition: avcodec.h:2819
av_cold void ff_ivi_init_static_vlc(void)
Initialize static codes used for macroblock and block decoding.
Definition: ivi_common.c:181
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:163
uint32_t frame_num
Definition: ivi_common.h:217
AVFrame * p_frame
Definition: ivi_common.h:270
int(* decode_band_hdr)(struct IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Definition: ivi_common.h:261
int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ivi_common.c:1024
static const struct @27 transforms[18]
int is_2d_trans
Definition: indeo4.c:43
IVIMbInfo * mbs
array of macroblock descriptors
Definition: ivi_common.h:137
static void switch_buffers(IVI45DecContext *ctx)
Rearrange decoding and reference buffers.
Definition: indeo4.c:584
const uint8_t * inter_scale
quantization coefficient for inter blocks
Definition: ivi_common.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:522
uint16_t chroma_height
Definition: ivi_common.h:206
int8_t q_delta
quant delta
Definition: ivi_common.h:117
static const uint8_t quant_index_to_tab[22]
Table for mapping quant matrix index from the bitstream into internal quant table number...
Definition: indeo4data.h:346
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:207
av_cold int ff_ivi_init_planes(IVIPlaneDesc *planes, const IVIPicConfig *cfg, int is_indeo4)
Initialize planes (prepares descriptors, allocates buffers etc).
Definition: ivi_common.c:306
NULL
Definition: eval.c:55
int ypos
Definition: ivi_common.h:130
IVIHuffTab mb_vlc
current macroblock table descriptor
Definition: ivi_common.h:239
int is_2d_trans
1 indicates that the two-dimensional inverse transform is used
Definition: ivi_common.h:180
Libavcodec external API header.
int glob_quant
quant base for this band
Definition: ivi_common.h:166
int height
Definition: ivi_common.h:132
main external API structure.
Definition: avcodec.h:1050
static void close(AVCodecParserContext *s)
Definition: h264_parser.c:490
int num_corr
number of correction entries
Definition: ivi_common.h:171
information for Indeo tile
Definition: ivi_common.h:128
int(* is_nonnull_frame)(struct IVI45DecContext *ctx)
Definition: ivi_common.h:264
av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height)
Initialize tile and macroblock descriptors.
Definition: ivi_common.c:419
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:243
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:276
void(* switch_buffers)(struct IVI45DecContext *ctx)
Definition: ivi_common.h:263
IVIBandDesc * bands
array of band descriptors
Definition: ivi_common.h:198
int32_t checksum
for debug purposes
Definition: ivi_common.h:181
int rvmap_sel
rvmap table selector
Definition: ivi_common.h:173
int8_t mv_x
motion vector (x component)
Definition: ivi_common.h:118
int8_t mv_y
motion vector (y component)
Definition: ivi_common.h:119
int mb_size
macroblock size
Definition: ivi_common.h:159
IVIMbInfo * ref_mbs
ptr to the macroblock descriptors of the reference tile
Definition: ivi_common.h:138
int xpos
Definition: ivi_common.h:129
IVIHuffTab blk_vlc
current block table descriptor
Definition: ivi_common.h:240
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:112
Huffman table is used for coding macroblocks.
Definition: ivi_common.h:76
int band_num
band number
Definition: ivi_common.h:147
InvTransformPtr * inv_trans
Definition: indeo4.c:41
int transform_size
Definition: ivi_common.h:178
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:91
static int is_nonnull_frame(IVI45DecContext *ctx)
Definition: indeo4.c:613
non-droppable P-frame
Definition: ivi_common.h:42
static av_cold int init(AVCodecParserContext *s)
Definition: h264_parser.c:499
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:439
const uint8_t * scan
ptr to the scan pattern
Definition: ivi_common.h:167
void * priv_data
Definition: avcodec.h:1092
int width
Definition: ivi_common.h:131
static av_cold int decode_init(AVCodecContext *avctx)
Definition: indeo4.c:619
int checksum_present
Definition: ivi_common.h:182
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:294
int transp_status
transparency mode status: 1 - enabled
Definition: ivi_common.h:222
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:113
int prev_frame_type
frame type of the previous frame
Definition: ivi_common.h:219
information for Indeo macroblock (16x16, 8x8 or 4x4)
Definition: ivi_common.h:111
IVIHuffTab blk_vlc
vlc table for decoding block data
Definition: ivi_common.h:169
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:186
#define FFSWAP(type, a, b)
Definition: common.h:60
uint32_t buf_offs
address in the output buffer for this mb
Definition: ivi_common.h:114
#define IVI_TOSIGNED(val)
convert unsigned values into signed ones (the sign is in the LSB)
Definition: ivi_common.h:291
int b_ref_buf
second reference frame buffer index
Definition: ivi_common.h:237
information for Indeo wavelet band
Definition: ivi_common.h:145
void( DCTransformPtr)(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
Definition: ivi_common.h:92
intra frame with slightly different bitstream coding
Definition: ivi_common.h:41
uint8_t rvmap_sel
Definition: ivi_common.h:242
AVCodec ff_indeo4_decoder
Definition: indeo4.c:654
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