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 "dsputil.h"
34 #include "ivi_dsp.h"
35 #include "ivi_common.h"
36 #include "indeo4data.h"
37 
41 enum {
49 };
50 
51 #define IVI4_PIC_SIZE_ESC 7
52 
53 
54 static const struct {
58 } transforms[18] = {
60  { NULL, NULL, 0 }, /* inverse Haar 8x1 */
61  { NULL, NULL, 0 }, /* inverse Haar 1x8 */
66  { NULL, NULL, 0 }, /* inverse DCT 8x8 */
67  { NULL, NULL, 0 }, /* inverse DCT 8x1 */
68  { NULL, NULL, 0 }, /* inverse DCT 1x8 */
69  { NULL, NULL, 0 }, /* inverse Haar 4x4 */
71  { NULL, NULL, 0 }, /* no transform 4x4 */
72  { NULL, NULL, 0 }, /* inverse Haar 1x4 */
73  { NULL, NULL, 0 }, /* inverse Haar 4x1 */
74  { NULL, NULL, 0 }, /* inverse slant 1x4 */
75  { NULL, NULL, 0 }, /* inverse slant 4x1 */
76  { NULL, NULL, 0 }, /* inverse DCT 4x4 */
77 };
78 
90 {
91  int i;
92 
93  switch (get_bits(gb, 2)) {
94  case 3:
95  return 1;
96  case 2:
97  for (i = 0; i < 4; i++)
98  if (get_bits(gb, 2) != 3)
99  return 0;
100  return 4;
101  default:
102  return 0;
103  }
104 }
105 
106 static inline int scale_tile_size(int def_size, int size_factor)
107 {
108  return size_factor == 15 ? def_size : (size_factor + 1) << 5;
109 }
110 
119 {
120  int pic_size_indx, i, p;
121  IVIPicConfig pic_conf;
122 
123  if (get_bits(&ctx->gb, 18) != 0x3FFF8) {
124  av_log(avctx, AV_LOG_ERROR, "Invalid picture start code!\n");
125  return AVERROR_INVALIDDATA;
126  }
127 
128  ctx->prev_frame_type = ctx->frame_type;
129  ctx->frame_type = get_bits(&ctx->gb, 3);
130  if (ctx->frame_type == 7) {
131  av_log(avctx, AV_LOG_ERROR, "Invalid frame type: %d\n", ctx->frame_type);
132  return AVERROR_INVALIDDATA;
133  }
134 
135 #if IVI4_STREAM_ANALYSER
136  if ( ctx->frame_type == FRAMETYPE_BIDIR1
137  || ctx->frame_type == FRAMETYPE_BIDIR)
138  ctx->has_b_frames = 1;
139 #endif
140 
141  ctx->transp_status = get_bits1(&ctx->gb);
142 #if IVI4_STREAM_ANALYSER
143  if (ctx->transp_status) {
144  ctx->has_transp = 1;
145  }
146 #endif
147 
148  /* unknown bit: Mac decoder ignores this bit, XANIM returns error */
149  if (get_bits1(&ctx->gb)) {
150  av_log(avctx, AV_LOG_ERROR, "Sync bit is set!\n");
151  return AVERROR_INVALIDDATA;
152  }
153 
154  ctx->data_size = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 24) : 0;
155 
156  /* null frames don't contain anything else so we just return */
157  if (ctx->frame_type >= FRAMETYPE_NULL_FIRST) {
158  av_dlog(avctx, "Null frame encountered!\n");
159  return 0;
160  }
161 
162  /* Check key lock status. If enabled - ignore lock word. */
163  /* Usually we have to prompt the user for the password, but */
164  /* we don't do that because Indeo 4 videos can be decoded anyway */
165  if (get_bits1(&ctx->gb)) {
166  skip_bits_long(&ctx->gb, 32);
167  av_dlog(avctx, "Password-protected clip!\n");
168  }
169 
170  pic_size_indx = get_bits(&ctx->gb, 3);
171  if (pic_size_indx == IVI4_PIC_SIZE_ESC) {
172  pic_conf.pic_height = get_bits(&ctx->gb, 16);
173  pic_conf.pic_width = get_bits(&ctx->gb, 16);
174  } else {
175  pic_conf.pic_height = ivi4_common_pic_sizes[pic_size_indx * 2 + 1];
176  pic_conf.pic_width = ivi4_common_pic_sizes[pic_size_indx * 2 ];
177  }
178 
179  /* Decode tile dimensions. */
180  if (get_bits1(&ctx->gb)) {
181  pic_conf.tile_height = scale_tile_size(pic_conf.pic_height, get_bits(&ctx->gb, 4));
182  pic_conf.tile_width = scale_tile_size(pic_conf.pic_width, get_bits(&ctx->gb, 4));
183 #if IVI4_STREAM_ANALYSER
184  ctx->uses_tiling = 1;
185 #endif
186  } else {
187  pic_conf.tile_height = pic_conf.pic_height;
188  pic_conf.tile_width = pic_conf.pic_width;
189  }
190 
191  /* Decode chroma subsampling. We support only 4:4 aka YVU9. */
192  if (get_bits(&ctx->gb, 2)) {
193  av_log(avctx, AV_LOG_ERROR, "Only YVU9 picture format is supported!\n");
194  return AVERROR_INVALIDDATA;
195  }
196  pic_conf.chroma_height = (pic_conf.pic_height + 3) >> 2;
197  pic_conf.chroma_width = (pic_conf.pic_width + 3) >> 2;
198 
199  /* decode subdivision of the planes */
200  pic_conf.luma_bands = decode_plane_subdivision(&ctx->gb);
201  if (pic_conf.luma_bands)
202  pic_conf.chroma_bands = decode_plane_subdivision(&ctx->gb);
203  ctx->is_scalable = pic_conf.luma_bands != 1 || pic_conf.chroma_bands != 1;
204  if (ctx->is_scalable && (pic_conf.luma_bands != 4 || pic_conf.chroma_bands != 1)) {
205  av_log(avctx, AV_LOG_ERROR, "Scalability: unsupported subdivision! Luma bands: %d, chroma bands: %d\n",
206  pic_conf.luma_bands, pic_conf.chroma_bands);
207  return AVERROR_INVALIDDATA;
208  }
209 
210  /* check if picture layout was changed and reallocate buffers */
211  if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf)) {
212  if (ff_ivi_init_planes(ctx->planes, &pic_conf)) {
213  av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
214  ctx->pic_conf.luma_bands = 0;
215  return AVERROR(ENOMEM);
216  }
217 
218  ctx->pic_conf = pic_conf;
219 
220  /* set default macroblock/block dimensions */
221  for (p = 0; p <= 2; p++) {
222  for (i = 0; i < (!p ? pic_conf.luma_bands : pic_conf.chroma_bands); i++) {
223  ctx->planes[p].bands[i].mb_size = !p ? (!ctx->is_scalable ? 16 : 8) : 4;
224  ctx->planes[p].bands[i].blk_size = !p ? 8 : 4;
225  }
226  }
227 
229  ctx->pic_conf.tile_height)) {
230  av_log(avctx, AV_LOG_ERROR,
231  "Couldn't reallocate internal structures!\n");
232  return AVERROR(ENOMEM);
233  }
234  }
235 
236  ctx->frame_num = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 20) : 0;
237 
238  /* skip decTimeEst field if present */
239  if (get_bits1(&ctx->gb))
240  skip_bits(&ctx->gb, 8);
241 
242  /* decode macroblock and block huffman codebooks */
243  if (ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_MB_HUFF, &ctx->mb_vlc, avctx) ||
244  ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_BLK_HUFF, &ctx->blk_vlc, avctx))
245  return AVERROR_INVALIDDATA;
246 
247  ctx->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
248 
249  ctx->in_imf = get_bits1(&ctx->gb);
250  ctx->in_q = get_bits1(&ctx->gb);
251 
252  ctx->pic_glob_quant = get_bits(&ctx->gb, 5);
253 
254  /* TODO: ignore this parameter if unused */
255  ctx->unknown1 = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 0;
256 
257  ctx->checksum = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 16) : 0;
258 
259  /* skip picture header extension if any */
260  while (get_bits1(&ctx->gb)) {
261  av_dlog(avctx, "Pic hdr extension encountered!\n");
262  skip_bits(&ctx->gb, 8);
263  }
264 
265  if (get_bits1(&ctx->gb)) {
266  av_log(avctx, AV_LOG_ERROR, "Bad blocks bits encountered!\n");
267  }
268 
269  align_get_bits(&ctx->gb);
270 
271  return 0;
272 }
273 
274 
284  AVCodecContext *avctx)
285 {
286  int plane, band_num, indx, transform_id, scan_indx;
287  int i;
288 
289  plane = get_bits(&ctx->gb, 2);
290  band_num = get_bits(&ctx->gb, 4);
291  if (band->plane != plane || band->band_num != band_num) {
292  av_log(avctx, AV_LOG_ERROR, "Invalid band header sequence!\n");
293  return AVERROR_INVALIDDATA;
294  }
295 
296  band->is_empty = get_bits1(&ctx->gb);
297  if (!band->is_empty) {
298  /* skip header size
299  * If header size is not given, header size is 4 bytes. */
300  if (get_bits1(&ctx->gb))
301  skip_bits(&ctx->gb, 16);
302 
303  band->is_halfpel = get_bits(&ctx->gb, 2);
304  if (band->is_halfpel >= 2) {
305  av_log(avctx, AV_LOG_ERROR, "Invalid/unsupported mv resolution: %d!\n",
306  band->is_halfpel);
307  return AVERROR_INVALIDDATA;
308  }
309 #if IVI4_STREAM_ANALYSER
310  if (!band->is_halfpel)
311  ctx->uses_fullpel = 1;
312 #endif
313 
314  band->checksum_present = get_bits1(&ctx->gb);
315  if (band->checksum_present)
316  band->checksum = get_bits(&ctx->gb, 16);
317 
318  indx = get_bits(&ctx->gb, 2);
319  if (indx == 3) {
320  av_log(avctx, AV_LOG_ERROR, "Invalid block size!\n");
321  return AVERROR_INVALIDDATA;
322  }
323  band->mb_size = 16 >> indx;
324  band->blk_size = 8 >> (indx >> 1);
325 
326  band->inherit_mv = get_bits1(&ctx->gb);
327  band->inherit_qdelta = get_bits1(&ctx->gb);
328 
329  band->glob_quant = get_bits(&ctx->gb, 5);
330 
331  if (!get_bits1(&ctx->gb) || ctx->frame_type == FRAMETYPE_INTRA) {
332  transform_id = get_bits(&ctx->gb, 5);
333  if (transform_id >= FF_ARRAY_ELEMS(transforms) ||
334  !transforms[transform_id].inv_trans) {
335  av_log_ask_for_sample(avctx, "Unimplemented transform: %d!\n", transform_id);
336  return AVERROR_PATCHWELCOME;
337  }
338  if ((transform_id >= 7 && transform_id <= 9) ||
339  transform_id == 17) {
340  av_log_ask_for_sample(avctx, "DCT transform not supported yet!\n");
341  return AVERROR_PATCHWELCOME;
342  }
343 
344 #if IVI4_STREAM_ANALYSER
345  if ((transform_id >= 0 && transform_id <= 2) || transform_id == 10)
346  ctx->uses_haar = 1;
347 #endif
348 
349  band->inv_transform = transforms[transform_id].inv_trans;
350  band->dc_transform = transforms[transform_id].dc_trans;
351  band->is_2d_trans = transforms[transform_id].is_2d_trans;
352  if (transform_id < 10)
353  band->transform_size = 8;
354  else
355  band->transform_size = 4;
356 
357  if (band->blk_size != band->transform_size)
358  return AVERROR_INVALIDDATA;
359 
360  scan_indx = get_bits(&ctx->gb, 4);
361  if (scan_indx == 15) {
362  av_log(avctx, AV_LOG_ERROR, "Custom scan pattern encountered!\n");
363  return AVERROR_INVALIDDATA;
364  }
365  if (scan_indx > 4 && scan_indx < 10) {
366  if (band->blk_size != 4)
367  return AVERROR_INVALIDDATA;
368  } else if (band->blk_size != 8)
369  return AVERROR_INVALIDDATA;
370 
371  band->scan = scan_index_to_tab[scan_indx];
372 
373  band->quant_mat = get_bits(&ctx->gb, 5);
374  if (band->quant_mat == 31) {
375  av_log(avctx, AV_LOG_ERROR, "Custom quant matrix encountered!\n");
376  return AVERROR_INVALIDDATA;
377  }
379  av_log_ask_for_sample(avctx, "Quantization matrix %d",
380  band->quant_mat);
381  return AVERROR_INVALIDDATA;
382  }
383  }
384 
385  /* decode block huffman codebook */
386  if (ff_ivi_dec_huff_desc(&ctx->gb, get_bits1(&ctx->gb), IVI_BLK_HUFF,
387  &band->blk_vlc, avctx))
388  return AVERROR_INVALIDDATA;
389 
390  /* select appropriate rvmap table for this band */
391  band->rvmap_sel = get_bits1(&ctx->gb) ? get_bits(&ctx->gb, 3) : 8;
392 
393  /* decode rvmap probability corrections if any */
394  band->num_corr = 0; /* there is no corrections */
395  if (get_bits1(&ctx->gb)) {
396  band->num_corr = get_bits(&ctx->gb, 8); /* get number of correction pairs */
397  if (band->num_corr > 61) {
398  av_log(avctx, AV_LOG_ERROR, "Too many corrections: %d\n",
399  band->num_corr);
400  return AVERROR_INVALIDDATA;
401  }
402 
403  /* read correction pairs */
404  for (i = 0; i < band->num_corr * 2; i++)
405  band->corr[i] = get_bits(&ctx->gb, 8);
406  }
407  }
408 
409  if (band->blk_size == 8) {
411  band->inter_base = &ivi4_quant_8x8_inter[quant_index_to_tab[band->quant_mat]][0];
412  } else {
414  band->inter_base = &ivi4_quant_4x4_inter[quant_index_to_tab[band->quant_mat]][0];
415  }
416 
417  /* Indeo 4 doesn't use scale tables */
418  band->intra_scale = NULL;
419  band->inter_scale = NULL;
420 
421  align_get_bits(&ctx->gb);
422 
423  return 0;
424 }
425 
426 
438  IVITile *tile, AVCodecContext *avctx)
439 {
440  int x, y, mv_x, mv_y, mv_delta, offs, mb_offset, blks_per_mb,
441  mv_scale, mb_type_bits;
442  IVIMbInfo *mb, *ref_mb;
443  int row_offset = band->mb_size * band->pitch;
444 
445  mb = tile->mbs;
446  ref_mb = tile->ref_mbs;
447  offs = tile->ypos * band->pitch + tile->xpos;
448 
449  blks_per_mb = band->mb_size != band->blk_size ? 4 : 1;
450  mb_type_bits = ctx->frame_type == FRAMETYPE_BIDIR ? 2 : 1;
451 
452  /* scale factor for motion vectors */
453  mv_scale = (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3);
454  mv_x = mv_y = 0;
455 
456  for (y = tile->ypos; y < tile->ypos + tile->height; y += band->mb_size) {
457  mb_offset = offs;
458 
459  for (x = tile->xpos; x < tile->xpos + tile->width; x += band->mb_size) {
460  mb->xpos = x;
461  mb->ypos = y;
462  mb->buf_offs = mb_offset;
463 
464  if (get_bits1(&ctx->gb)) {
465  if (ctx->frame_type == FRAMETYPE_INTRA) {
466  av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n");
467  return AVERROR_INVALIDDATA;
468  }
469  mb->type = 1; /* empty macroblocks are always INTER */
470  mb->cbp = 0; /* all blocks are empty */
471 
472  mb->q_delta = 0;
473  if (!band->plane && !band->band_num && ctx->in_q) {
474  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
475  IVI_VLC_BITS, 1);
476  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
477  }
478 
479  mb->mv_x = mb->mv_y = 0; /* no motion vector coded */
480  if (band->inherit_mv && ref_mb) {
481  /* motion vector inheritance */
482  if (mv_scale) {
483  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
484  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
485  } else {
486  mb->mv_x = ref_mb->mv_x;
487  mb->mv_y = ref_mb->mv_y;
488  }
489  }
490  } else {
491  if (band->inherit_mv) {
492  /* copy mb_type from corresponding reference mb */
493  if (!ref_mb)
494  return AVERROR_INVALIDDATA;
495  mb->type = ref_mb->type;
496  } else if (ctx->frame_type == FRAMETYPE_INTRA) {
497  mb->type = 0; /* mb_type is always INTRA for intra-frames */
498  } else {
499  mb->type = get_bits(&ctx->gb, mb_type_bits);
500  }
501 
502  mb->cbp = get_bits(&ctx->gb, blks_per_mb);
503 
504  mb->q_delta = 0;
505  if (band->inherit_qdelta) {
506  if (ref_mb) mb->q_delta = ref_mb->q_delta;
507  } else if (mb->cbp || (!band->plane && !band->band_num &&
508  ctx->in_q)) {
509  mb->q_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
510  IVI_VLC_BITS, 1);
511  mb->q_delta = IVI_TOSIGNED(mb->q_delta);
512  }
513 
514  if (!mb->type) {
515  mb->mv_x = mb->mv_y = 0; /* there is no motion vector in intra-macroblocks */
516  } else {
517  if (band->inherit_mv) {
518  if (ref_mb)
519  /* motion vector inheritance */
520  if (mv_scale) {
521  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
522  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
523  } else {
524  mb->mv_x = ref_mb->mv_x;
525  mb->mv_y = ref_mb->mv_y;
526  }
527  } else {
528  /* decode motion vector deltas */
529  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
530  IVI_VLC_BITS, 1);
531  mv_y += IVI_TOSIGNED(mv_delta);
532  mv_delta = get_vlc2(&ctx->gb, ctx->mb_vlc.tab->table,
533  IVI_VLC_BITS, 1);
534  mv_x += IVI_TOSIGNED(mv_delta);
535  mb->mv_x = mv_x;
536  mb->mv_y = mv_y;
537  }
538  }
539  }
540 
541  mb++;
542  if (ref_mb)
543  ref_mb++;
544  mb_offset += band->mb_size;
545  }
546 
547  offs += row_offset;
548  }
549 
550  align_get_bits(&ctx->gb);
551 
552  return 0;
553 }
554 
555 
562 {
563  switch (ctx->prev_frame_type) {
564  case FRAMETYPE_INTRA:
565  case FRAMETYPE_INTER:
566  ctx->buf_switch ^= 1;
567  ctx->dst_buf = ctx->buf_switch;
568  ctx->ref_buf = ctx->buf_switch ^ 1;
569  break;
571  break;
572  }
573 
574  switch (ctx->frame_type) {
575  case FRAMETYPE_INTRA:
576  ctx->buf_switch = 0;
577  /* FALLTHROUGH */
578  case FRAMETYPE_INTER:
579  ctx->dst_buf = ctx->buf_switch;
580  ctx->ref_buf = ctx->buf_switch ^ 1;
581  break;
584  case FRAMETYPE_NULL_LAST:
585  break;
586  }
587 }
588 
589 
591 {
592  return ctx->frame_type < FRAMETYPE_NULL_FIRST;
593 }
594 
595 
597 {
598  IVI45DecContext *ctx = avctx->priv_data;
599 
601 
602  /* copy rvmap tables in our context so we can apply changes to them */
603  memcpy(ctx->rvmap_tabs, ff_ivi_rvmap_tabs, sizeof(ff_ivi_rvmap_tabs));
604 
605  /* Force allocation of the internal buffers */
606  /* during picture header decoding. */
607  ctx->pic_conf.pic_width = 0;
608  ctx->pic_conf.pic_height = 0;
609 
610  avctx->pix_fmt = PIX_FMT_YUV410P;
611 
617 
618  return 0;
619 }
620 
621 
623  .name = "indeo4",
624  .type = AVMEDIA_TYPE_VIDEO,
625  .id = CODEC_ID_INDEO4,
626  .priv_data_size = sizeof(IVI45DecContext),
627  .init = decode_init,
630  .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo Video Interactive 4"),
631 };
int is_empty
= 1 if this band doesn't contain any data
Definition: ivi_common.h:145
uint32_t data_size
size of the frame data in bytes from picture header
Definition: ivi_common.h:208
uint8_t type
macroblock type: 0 - INTRA, 1 - INTER
Definition: ivi_common.h:105
static const uint16_t ivi4_quant_8x8_intra[9][64]
Indeo 4 dequant tables.
Definition: indeo4data.h:89
enum PixelFormat pix_fmt
Pixel format, see PIX_FMT_xxx.
Definition: avcodec.h:1426
static int scale_tile_size(int def_size, int size_factor)
Definition: indeo4.c:106
Huffman table is used for coding macroblocks.
Definition: ivi_common.h:63
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:54
av_cold int ff_ivi_decode_close(AVCodecContext *avctx)
Close Indeo5 decoder and clean up its context.
Definition: ivi_common.c:970
droppable P-frame
Definition: indeo4.c:46
This file contains data needed for the Indeo 4 decoder.
InvTransformPtr * inv_transform
Definition: ivi_common.h:164
#define IVI4_PIC_SIZE_ESC
Definition: indeo4.c:51
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:138
static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
Decode Indeo 4 picture header.
Definition: indeo4.c:118
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:237
static int decode_plane_subdivision(GetBitContext *gb)
Decode subdivision of a plane.
Definition: indeo4.c:89
int(* decode_pic_hdr)(struct IVI45DecContext *ctx, AVCodecContext *avctx)
Definition: ivi_common.h:247
static void skip_bits_long(GetBitContext *s, int n)
Definition: get_bits.h:197
static void align_get_bits(GetBitContext *s)
Definition: get_bits.h:378
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:314
int(* decode_mb_info)(struct IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx)
Definition: ivi_common.h:249
int dst_buf
buffer index for the currently decoded frame
Definition: ivi_common.h:222
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:560
DSP functions (inverse transforms, motion compensations, wavelet recompostion) for Indeo Video Intera...
int is_halfpel
precision of the motion compensation: 0 - fullpel, 1 - halfpel
Definition: ivi_common.h:148
uint8_t chroma_bands
Definition: ivi_common.h:197
#define FF_ARRAY_ELEMS(a)
int plane
plane number this band belongs to
Definition: ivi_common.h:134
IVIPicConfig pic_conf
Definition: ivi_common.h:218
AVCodec.
Definition: avcodec.h:3189
int quant_mat
dequant matrix index
Definition: ivi_common.h:152
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:550
int av_cold ff_ivi_init_planes(IVIPlaneDesc *planes, const IVIPicConfig *cfg)
Initialize planes (prepares descriptors, allocates buffers etc).
Definition: ivi_common.c:200
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
Definition: mimic.c:228
uint8_t luma_bands
Definition: ivi_common.h:196
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:71
uint8_t pic_glob_quant
Definition: ivi_common.h:232
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:70
const uint16_t * inter_base
quantization matrix for inter blocks
Definition: ivi_common.h:172
uint16_t pic_height
Definition: ivi_common.h:191
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:149
static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Decode Indeo 4 band header.
Definition: indeo4.c:283
uint16_t tile_height
Definition: ivi_common.h:195
GetBitContext gb
Definition: ivi_common.h:201
uint16_t chroma_width
Definition: ivi_common.h:192
int pitch
pitch associated with the buffers above
Definition: ivi_common.h:144
static const uint16_t ivi4_quant_8x8_inter[9][64]
Definition: indeo4data.h:182
uint8_t cbp
coded block pattern
Definition: ivi_common.h:106
uint16_t checksum
frame checksum
Definition: ivi_common.h:216
bitstream reader API header.
empty frame with no data
Definition: indeo4.c:48
bidirectional frame
Definition: indeo4.c:45
uint16_t pic_width
Definition: ivi_common.h:190
static const uint16_t ivi4_quant_4x4_inter[5][16]
Definition: indeo4data.h:308
IVIPlaneDesc planes[3]
color planes
Definition: ivi_common.h:219
static int init(AVCodecParserContext *s)
Definition: h264_parser.c:336
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:471
const uint16_t * intra_base
quantization matrix for intra blocks
Definition: ivi_common.h:171
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:491
uint8_t unknown1
Definition: ivi_common.h:233
int blk_size
block size
Definition: ivi_common.h:147
const RVMapDesc ff_ivi_rvmap_tabs[9]
Run-value (RLE) tables.
Definition: ivi_common.c:1065
non-droppable P-frame
Definition: indeo4.c:44
uint8_t corr[61 *2]
rvmap correction pairs
Definition: ivi_common.h:159
static int ivi_pic_config_cmp(IVIPicConfig *str1, IVIPicConfig *str2)
compare some properties of two pictures
Definition: ivi_common.h:257
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:259
RVMapDesc rvmap_tabs[9]
local corrected copy of the static rvmap tables
Definition: ivi_common.h:203
#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:231
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:191
This file contains structures and macros shared by both Indeo4 and Indeo5 decoders.
DCTransformPtr * dc_trans
Definition: indeo4.c:56
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:536
int ref_buf
inter frame reference buffer index
Definition: ivi_common.h:223
DCTransformPtr * dc_transform
Definition: ivi_common.h:166
void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:140
static const uint8_t * scan_index_to_tab[15]
Definition: indeo4data.h:63
const char * name
Name of the codec implementation.
Definition: avcodec.h:3196
struct IVI45DecContext IVI45DecContext
int inherit_qdelta
tells if quantiser delta is inherited from reference macroblock
Definition: ivi_common.h:150
uint32_t frame_num
Definition: ivi_common.h:205
int(* decode_band_hdr)(struct IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Definition: ivi_common.h:248
int is_2d_trans
Definition: indeo4.c:57
IVIMbInfo * mbs
array of macroblock descriptors
Definition: ivi_common.h:125
static void switch_buffers(IVI45DecContext *ctx)
Rearrange decoding and reference buffers.
Definition: indeo4.c:561
const uint8_t * inter_scale
quantization coefficient for inter blocks
Definition: ivi_common.h:174
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:481
uint16_t chroma_height
Definition: ivi_common.h:193
void ff_ivi_init_static_vlc(void)
Initialize static codes used for macroblock and block decoding.
Definition: ivi_common.c:117
#define av_dlog(pctx,...)
av_dlog macros Useful to print debug messages that shouldn't get compiled in normally.
Definition: log.h:158
int8_t q_delta
quant delta
Definition: ivi_common.h:107
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:378
#define AVERROR_PATCHWELCOME
Not yet implemented in Libav, patches welcome.
Definition: error.h:57
uint16_t tile_width
Definition: ivi_common.h:194
NULL
Definition: eval.c:50
int ypos
Definition: ivi_common.h:118
IVIHuffTab mb_vlc
current macroblock table descriptor
Definition: ivi_common.h:226
int is_2d_trans
1 indicates that the two-dimensional inverse transform is used
Definition: ivi_common.h:167
external API header
int glob_quant
quant base for this band
Definition: ivi_common.h:153
int height
Definition: ivi_common.h:120
void av_log_ask_for_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message asking for a sample.
main external API structure.
Definition: avcodec.h:1329
static void close(AVCodecParserContext *s)
Definition: h264_parser.c:327
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:111
int num_corr
number of correction entries
Definition: ivi_common.h:158
information for Indeo tile
Definition: ivi_common.h:116
int(* is_nonnull_frame)(struct IVI45DecContext *ctx)
Definition: ivi_common.h:251
int buf_switch
used to switch between three buffers
Definition: ivi_common.h:221
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:268
uint8_t in_imf
Definition: ivi_common.h:230
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:260
static const uint16_t ivi4_quant_4x4_intra[5][16]
Definition: indeo4data.h:275
void(* switch_buffers)(struct IVI45DecContext *ctx)
Definition: ivi_common.h:250
IVIBandDesc * bands
array of band descriptors
Definition: ivi_common.h:185
int32_t checksum
for debug purposes
Definition: ivi_common.h:168
int rvmap_sel
rvmap table selector
Definition: ivi_common.h:160
int8_t mv_x
motion vector (x component)
Definition: ivi_common.h:108
int8_t mv_y
motion vector (y component)
Definition: ivi_common.h:109
int mb_size
macroblock size
Definition: ivi_common.h:146
IVIMbInfo * ref_mbs
ptr to the macroblock descriptors of the reference tile
Definition: ivi_common.h:126
int xpos
Definition: ivi_common.h:117
IVIHuffTab blk_vlc
current block table descriptor
Definition: ivi_common.h:227
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:418
int16_t xpos
Definition: ivi_common.h:102
int av_cold ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height)
Initialize tile and macroblock descriptors.
Definition: ivi_common.c:328
int band_num
band number
Definition: ivi_common.h:135
InvTransformPtr * inv_trans
Definition: indeo4.c:55
int transform_size
Definition: ivi_common.h:165
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:81
static int is_nonnull_frame(IVI45DecContext *ctx)
Definition: indeo4.c:590
DSP utils.
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:437
const uint8_t * scan
ptr to the scan pattern
Definition: ivi_common.h:154
void * priv_data
Definition: avcodec.h:1531
int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
Definition: ivi_common.c:870
int width
Definition: ivi_common.h:119
static av_cold int decode_init(AVCodecContext *avctx)
Definition: indeo4.c:596
int checksum_present
Definition: ivi_common.h:169
VLC_TYPE(* table)[2]
code, bits
Definition: get_bits.h:65
static int ivi_scale_mv(int mv, int mv_scale)
scale motion vector
Definition: ivi_common.h:276
int transp_status
transparency mode status: 1 - enabled
Definition: ivi_common.h:210
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:458
int16_t ypos
Definition: ivi_common.h:103
bidirectional frame
Definition: indeo4.c:43
int prev_frame_type
frame type of the previous frame
Definition: ivi_common.h:207
information for Indeo macroblock (16x16, 8x8 or 4x4)
Definition: ivi_common.h:101
IVIHuffTab blk_vlc
vlc table for decoding block data
Definition: ivi_common.h:156
const uint8_t * intra_scale
quantization coefficient for intra blocks
Definition: ivi_common.h:173
uint32_t buf_offs
address in the output buffer for this mb
Definition: ivi_common.h:104
static const struct @24 transforms[18]
empty frame with no data
Definition: indeo4.c:47
#define IVI_TOSIGNED(val)
convert unsigned values into signed ones (the sign is in the LSB)
Definition: ivi_common.h:273
information for Indeo wavelet band
Definition: ivi_common.h:133
void( DCTransformPtr)(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
Definition: ivi_common.h:82
uint8_t rvmap_sel
Definition: ivi_common.h:229
AVCodec ff_indeo4_decoder
Definition: indeo4.c:622
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:509