FFmpeg
ivi.c
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1 /*
2  * common functions for Indeo Video Interactive codecs (Indeo4 and Indeo5)
3  *
4  * Copyright (c) 2009 Maxim Poliakovski
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * This file contains functions and data shared by both Indeo4 and
26  * Indeo5 decoders.
27  */
28 
29 #include <inttypes.h>
30 
31 #include "libavutil/attributes.h"
32 #include "libavutil/imgutils.h"
33 #include "libavutil/timer.h"
34 
35 #define BITSTREAM_READER_LE
36 #include "avcodec.h"
37 #include "get_bits.h"
38 #include "internal.h"
39 #include "mathops.h"
40 #include "ivi.h"
41 #include "ivi_dsp.h"
42 
43 /**
44  * These are 2x8 predefined Huffman codebooks for coding macroblock/block
45  * signals. They are specified using "huffman descriptors" in order to
46  * avoid huge static tables. The decoding tables will be generated at
47  * startup from these descriptors.
48  */
49 /** static macroblock huffman tables */
50 static const IVIHuffDesc ivi_mb_huff_desc[8] = {
51  {8, {0, 4, 5, 4, 4, 4, 6, 6}},
52  {12, {0, 2, 2, 3, 3, 3, 3, 5, 3, 2, 2, 2}},
53  {12, {0, 2, 3, 4, 3, 3, 3, 3, 4, 3, 2, 2}},
54  {12, {0, 3, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2}},
55  {13, {0, 4, 4, 3, 3, 3, 3, 2, 3, 3, 2, 1, 1}},
56  {9, {0, 4, 4, 4, 4, 3, 3, 3, 2}},
57  {10, {0, 4, 4, 4, 4, 3, 3, 2, 2, 2}},
58  {12, {0, 4, 4, 4, 3, 3, 2, 3, 2, 2, 2, 2}}
59 };
60 
61 /** static block huffman tables */
62 static const IVIHuffDesc ivi_blk_huff_desc[8] = {
63  {10, {1, 2, 3, 4, 4, 7, 5, 5, 4, 1}},
64  {11, {2, 3, 4, 4, 4, 7, 5, 4, 3, 3, 2}},
65  {12, {2, 4, 5, 5, 5, 5, 6, 4, 4, 3, 1, 1}},
66  {13, {3, 3, 4, 4, 5, 6, 6, 4, 4, 3, 2, 1, 1}},
67  {11, {3, 4, 4, 5, 5, 5, 6, 5, 4, 2, 2}},
68  {13, {3, 4, 5, 5, 5, 5, 6, 4, 3, 3, 2, 1, 1}},
69  {13, {3, 4, 5, 5, 5, 6, 5, 4, 3, 3, 2, 1, 1}},
70  {9, {3, 4, 4, 5, 5, 5, 6, 5, 5}}
71 };
72 
73 static VLC ivi_mb_vlc_tabs [8]; ///< static macroblock Huffman tables
74 static VLC ivi_blk_vlc_tabs[8]; ///< static block Huffman tables
75 
76 typedef void (*ivi_mc_func) (int16_t *buf, const int16_t *ref_buf,
77  ptrdiff_t pitch, int mc_type);
78 typedef void (*ivi_mc_avg_func) (int16_t *buf, const int16_t *ref_buf1,
79  const int16_t *ref_buf2,
80  ptrdiff_t pitch, int mc_type, int mc_type2);
81 
82 static int ivi_mc(const IVIBandDesc *band, ivi_mc_func mc, ivi_mc_avg_func mc_avg,
83  int offs, int mv_x, int mv_y, int mv_x2, int mv_y2,
84  int mc_type, int mc_type2)
85 {
86  int ref_offs = offs + mv_y * band->pitch + mv_x;
87  int buf_size = band->pitch * band->aheight;
88  int min_size = band->pitch * (band->blk_size - 1) + band->blk_size;
89  int ref_size = (mc_type > 1) * band->pitch + (mc_type & 1);
90 
91  if (mc_type != -1) {
92  av_assert0(offs >= 0 && ref_offs >= 0 && band->ref_buf);
93  av_assert0(buf_size - min_size >= offs);
94  av_assert0(buf_size - min_size - ref_size >= ref_offs);
95  }
96 
97  if (mc_type2 == -1) {
98  mc(band->buf + offs, band->ref_buf + ref_offs, band->pitch, mc_type);
99  } else {
100  int ref_offs2 = offs + mv_y2 * band->pitch + mv_x2;
101  int ref_size2 = (mc_type2 > 1) * band->pitch + (mc_type2 & 1);
102  if (offs < 0 || ref_offs2 < 0 || !band->b_ref_buf)
103  return AVERROR_INVALIDDATA;
104  if (buf_size - min_size - ref_size2 < ref_offs2)
105  return AVERROR_INVALIDDATA;
106 
107  if (mc_type == -1)
108  mc(band->buf + offs, band->b_ref_buf + ref_offs2,
109  band->pitch, mc_type2);
110  else
111  mc_avg(band->buf + offs, band->ref_buf + ref_offs,
112  band->b_ref_buf + ref_offs2, band->pitch,
113  mc_type, mc_type2);
114  }
115 
116  return 0;
117 }
118 
119 /**
120  * Reverse "nbits" bits of the value "val" and return the result
121  * in the least significant bits.
122  */
123 static uint16_t inv_bits(uint16_t val, int nbits)
124 {
125  uint16_t res;
126 
127  if (nbits <= 8) {
128  res = ff_reverse[val] >> (8 - nbits);
129  } else
130  res = ((ff_reverse[val & 0xFF] << 8) +
131  (ff_reverse[val >> 8])) >> (16 - nbits);
132 
133  return res;
134 }
135 
136 /*
137  * Generate a huffman codebook from the given descriptor
138  * and convert it into the FFmpeg VLC table.
139  *
140  * @param[in] cb pointer to codebook descriptor
141  * @param[out] vlc where to place the generated VLC table
142  * @param[in] flag flag: 1 - for static or 0 for dynamic tables
143  * @return result code: 0 - OK, -1 = error (invalid codebook descriptor)
144  */
145 static int ivi_create_huff_from_desc(const IVIHuffDesc *cb, VLC *vlc, int flag)
146 {
147  int pos, i, j, codes_per_row, prefix, not_last_row;
148  uint16_t codewords[256]; /* FIXME: move this temporal storage out? */
149  uint8_t bits[256];
150 
151  pos = 0; /* current position = 0 */
152 
153  for (i = 0; i < cb->num_rows; i++) {
154  codes_per_row = 1 << cb->xbits[i];
155  not_last_row = (i != cb->num_rows - 1);
156  prefix = ((1 << i) - 1) << (cb->xbits[i] + not_last_row);
157 
158  for (j = 0; j < codes_per_row; j++) {
159  if (pos >= 256) /* Some Indeo5 codebooks can have more than 256 */
160  break; /* elements, but only 256 codes are allowed! */
161 
162  bits[pos] = i + cb->xbits[i] + not_last_row;
163  if (bits[pos] > IVI_VLC_BITS)
164  return AVERROR_INVALIDDATA; /* invalid descriptor */
165 
166  codewords[pos] = inv_bits((prefix | j), bits[pos]);
167  if (!bits[pos])
168  bits[pos] = 1;
169 
170  pos++;
171  }//for j
172  }//for i
173 
174  /* number of codewords = pos */
175  return init_vlc(vlc, IVI_VLC_BITS, pos, bits, 1, 1, codewords, 2, 2,
176  (flag ? INIT_VLC_USE_NEW_STATIC : 0) | INIT_VLC_LE);
177 }
178 
180 {
181  int i;
182  static VLC_TYPE table_data[8192 * 16][2];
183  static int initialized_vlcs = 0;
184 
185  if (initialized_vlcs)
186  return;
187  for (i = 0; i < 8; i++) {
188  ivi_mb_vlc_tabs[i].table = table_data + i * 2 * 8192;
189  ivi_mb_vlc_tabs[i].table_allocated = 8192;
190  ivi_create_huff_from_desc(&ivi_mb_huff_desc[i],
191  &ivi_mb_vlc_tabs[i], 1);
192  ivi_blk_vlc_tabs[i].table = table_data + (i * 2 + 1) * 8192;
193  ivi_blk_vlc_tabs[i].table_allocated = 8192;
194  ivi_create_huff_from_desc(&ivi_blk_huff_desc[i],
195  &ivi_blk_vlc_tabs[i], 1);
196  }
197  initialized_vlcs = 1;
198 }
199 
200 /*
201  * Copy huffman codebook descriptors.
202  *
203  * @param[out] dst ptr to the destination descriptor
204  * @param[in] src ptr to the source descriptor
205  */
207 {
208  dst->num_rows = src->num_rows;
209  memcpy(dst->xbits, src->xbits, src->num_rows);
210 }
211 
212 /*
213  * Compare two huffman codebook descriptors.
214  *
215  * @param[in] desc1 ptr to the 1st descriptor to compare
216  * @param[in] desc2 ptr to the 2nd descriptor to compare
217  * @return comparison result: 0 - equal, 1 - not equal
218  */
219 static int ivi_huff_desc_cmp(const IVIHuffDesc *desc1,
220  const IVIHuffDesc *desc2)
221 {
222  return desc1->num_rows != desc2->num_rows ||
223  memcmp(desc1->xbits, desc2->xbits, desc1->num_rows);
224 }
225 
226 int ff_ivi_dec_huff_desc(GetBitContext *gb, int desc_coded, int which_tab,
227  IVIHuffTab *huff_tab, AVCodecContext *avctx)
228 {
229  int i, result;
230  IVIHuffDesc new_huff;
231 
232  if (!desc_coded) {
233  /* select default table */
234  huff_tab->tab = (which_tab) ? &ivi_blk_vlc_tabs[7]
235  : &ivi_mb_vlc_tabs [7];
236  return 0;
237  }
238 
239  huff_tab->tab_sel = get_bits(gb, 3);
240  if (huff_tab->tab_sel == 7) {
241  /* custom huffman table (explicitly encoded) */
242  new_huff.num_rows = get_bits(gb, 4);
243  if (!new_huff.num_rows) {
244  av_log(avctx, AV_LOG_ERROR, "Empty custom Huffman table!\n");
245  return AVERROR_INVALIDDATA;
246  }
247 
248  for (i = 0; i < new_huff.num_rows; i++)
249  new_huff.xbits[i] = get_bits(gb, 4);
250 
251  /* Have we got the same custom table? Rebuild if not. */
252  if (ivi_huff_desc_cmp(&new_huff, &huff_tab->cust_desc) || !huff_tab->cust_tab.table) {
253  ivi_huff_desc_copy(&huff_tab->cust_desc, &new_huff);
254 
255  if (huff_tab->cust_tab.table)
256  ff_free_vlc(&huff_tab->cust_tab);
257  result = ivi_create_huff_from_desc(&huff_tab->cust_desc,
258  &huff_tab->cust_tab, 0);
259  if (result) {
260  // reset faulty description
261  huff_tab->cust_desc.num_rows = 0;
262  av_log(avctx, AV_LOG_ERROR,
263  "Error while initializing custom vlc table!\n");
264  return result;
265  }
266  }
267  huff_tab->tab = &huff_tab->cust_tab;
268  } else {
269  /* select one of predefined tables */
270  huff_tab->tab = (which_tab) ? &ivi_blk_vlc_tabs[huff_tab->tab_sel]
271  : &ivi_mb_vlc_tabs [huff_tab->tab_sel];
272  }
273 
274  return 0;
275 }
276 
277 /*
278  * Free planes, bands and macroblocks buffers.
279  *
280  * @param[in] planes pointer to the array of the plane descriptors
281  */
283 {
284  int p, b, t;
285 
286  for (p = 0; p < 3; p++) {
287  if (planes[p].bands)
288  for (b = 0; b < planes[p].num_bands; b++) {
289  av_freep(&planes[p].bands[b].bufs[0]);
290  av_freep(&planes[p].bands[b].bufs[1]);
291  av_freep(&planes[p].bands[b].bufs[2]);
292  av_freep(&planes[p].bands[b].bufs[3]);
293 
294  if (planes[p].bands[b].blk_vlc.cust_tab.table)
295  ff_free_vlc(&planes[p].bands[b].blk_vlc.cust_tab);
296  for (t = 0; t < planes[p].bands[b].num_tiles; t++)
297  av_freep(&planes[p].bands[b].tiles[t].mbs);
298  av_freep(&planes[p].bands[b].tiles);
299  }
300  av_freep(&planes[p].bands);
301  planes[p].num_bands = 0;
302  }
303 }
304 
306  int is_indeo4)
307 {
308  int p, b;
309  uint32_t b_width, b_height, align_fac, width_aligned,
310  height_aligned, buf_size;
311  IVIBandDesc *band;
312 
313  ivi_free_buffers(planes);
314 
315  if (av_image_check_size2(cfg->pic_width, cfg->pic_height, avctx->max_pixels, AV_PIX_FMT_YUV410P, 0, avctx) < 0 ||
316  cfg->luma_bands < 1 || cfg->chroma_bands < 1)
317  return AVERROR_INVALIDDATA;
318 
319  /* fill in the descriptor of the luminance plane */
320  planes[0].width = cfg->pic_width;
321  planes[0].height = cfg->pic_height;
322  planes[0].num_bands = cfg->luma_bands;
323 
324  /* fill in the descriptors of the chrominance planes */
325  planes[1].width = planes[2].width = (cfg->pic_width + 3) >> 2;
326  planes[1].height = planes[2].height = (cfg->pic_height + 3) >> 2;
327  planes[1].num_bands = planes[2].num_bands = cfg->chroma_bands;
328 
329  for (p = 0; p < 3; p++) {
330  planes[p].bands = av_mallocz_array(planes[p].num_bands, sizeof(IVIBandDesc));
331  if (!planes[p].bands)
332  return AVERROR(ENOMEM);
333 
334  /* select band dimensions: if there is only one band then it
335  * has the full size, if there are several bands each of them
336  * has only half size */
337  b_width = planes[p].num_bands == 1 ? planes[p].width
338  : (planes[p].width + 1) >> 1;
339  b_height = planes[p].num_bands == 1 ? planes[p].height
340  : (planes[p].height + 1) >> 1;
341 
342  /* luma band buffers will be aligned on 16x16 (max macroblock size) */
343  /* chroma band buffers will be aligned on 8x8 (max macroblock size) */
344  align_fac = p ? 8 : 16;
345  width_aligned = FFALIGN(b_width , align_fac);
346  height_aligned = FFALIGN(b_height, align_fac);
347  buf_size = width_aligned * height_aligned * sizeof(int16_t);
348 
349  for (b = 0; b < planes[p].num_bands; b++) {
350  band = &planes[p].bands[b]; /* select appropriate plane/band */
351  band->plane = p;
352  band->band_num = b;
353  band->width = b_width;
354  band->height = b_height;
355  band->pitch = width_aligned;
356  band->aheight = height_aligned;
357  band->bufs[0] = av_mallocz(buf_size);
358  band->bufs[1] = av_mallocz(buf_size);
359  band->bufsize = buf_size/2;
360  if (!band->bufs[0] || !band->bufs[1])
361  return AVERROR(ENOMEM);
362 
363  /* allocate the 3rd band buffer for scalability mode */
364  if (cfg->luma_bands > 1) {
365  band->bufs[2] = av_mallocz(buf_size);
366  if (!band->bufs[2])
367  return AVERROR(ENOMEM);
368  }
369  if (is_indeo4) {
370  band->bufs[3] = av_mallocz(buf_size);
371  if (!band->bufs[3])
372  return AVERROR(ENOMEM);
373  }
374  /* reset custom vlc */
375  planes[p].bands[0].blk_vlc.cust_desc.num_rows = 0;
376  }
377  }
378 
379  return 0;
380 }
381 
382 static int ivi_init_tiles(const IVIBandDesc *band, IVITile *ref_tile,
383  int p, int b, int t_height, int t_width)
384 {
385  int x, y;
386  IVITile *tile = band->tiles;
387 
388  for (y = 0; y < band->height; y += t_height) {
389  for (x = 0; x < band->width; x += t_width) {
390  tile->xpos = x;
391  tile->ypos = y;
392  tile->mb_size = band->mb_size;
393  tile->width = FFMIN(band->width - x, t_width);
394  tile->height = FFMIN(band->height - y, t_height);
395  tile->is_empty = tile->data_size = 0;
396  /* calculate number of macroblocks */
397  tile->num_MBs = IVI_MBs_PER_TILE(tile->width, tile->height,
398  band->mb_size);
399 
400  av_freep(&tile->mbs);
401  tile->mbs = av_mallocz_array(tile->num_MBs, sizeof(IVIMbInfo));
402  if (!tile->mbs)
403  return AVERROR(ENOMEM);
404 
405  tile->ref_mbs = 0;
406  if (p || b) {
407  if (tile->num_MBs != ref_tile->num_MBs) {
408  av_log(NULL, AV_LOG_DEBUG, "ref_tile mismatch\n");
409  return AVERROR_INVALIDDATA;
410  }
411  tile->ref_mbs = ref_tile->mbs;
412  ref_tile++;
413  }
414  tile++;
415  }
416  }
417 
418  return 0;
419 }
420 
422  int tile_width, int tile_height)
423 {
424  int p, b, x_tiles, y_tiles, t_width, t_height, ret;
425  IVIBandDesc *band;
426 
427  for (p = 0; p < 3; p++) {
428  t_width = !p ? tile_width : (tile_width + 3) >> 2;
429  t_height = !p ? tile_height : (tile_height + 3) >> 2;
430 
431  if (!p && planes[0].num_bands == 4) {
432  t_width >>= 1;
433  t_height >>= 1;
434  }
435  if(t_width<=0 || t_height<=0)
436  return AVERROR(EINVAL);
437 
438  for (b = 0; b < planes[p].num_bands; b++) {
439  band = &planes[p].bands[b];
440 
441  if (band->tiles) {
442  int t;
443  for (t = 0; t < band->num_tiles; t++) {
444  av_freep(&band->tiles[t].mbs);
445  }
446  }
447 
448  x_tiles = IVI_NUM_TILES(band->width, t_width);
449  y_tiles = IVI_NUM_TILES(band->height, t_height);
450  band->num_tiles = x_tiles * y_tiles;
451 
452  av_freep(&band->tiles);
453  band->tiles = av_mallocz_array(band->num_tiles, sizeof(IVITile));
454  if (!band->tiles)
455  return AVERROR(ENOMEM);
456 
457  /* use the first luma band as reference for motion vectors
458  * and quant */
459  ret = ivi_init_tiles(band, planes[0].bands[0].tiles,
460  p, b, t_height, t_width);
461  if (ret < 0)
462  return ret;
463  }
464  }
465 
466  return 0;
467 }
468 
469 /*
470  * Decode size of the tile data.
471  * The size is stored as a variable-length field having the following format:
472  * if (tile_data_size < 255) than this field is only one byte long
473  * if (tile_data_size >= 255) than this field four is byte long: 0xFF X1 X2 X3
474  * where X1-X3 is size of the tile data
475  *
476  * @param[in,out] gb the GetBit context
477  * @return size of the tile data in bytes
478  */
480 {
481  int len;
482 
483  len = 0;
484  if (get_bits1(gb)) {
485  len = get_bits(gb, 8);
486  if (len == 255)
487  len = get_bits_long(gb, 24);
488  }
489 
490  /* align the bitstream reader on the byte boundary */
491  align_get_bits(gb);
492 
493  return len;
494 }
495 
496 static int ivi_dc_transform(const IVIBandDesc *band, int *prev_dc, int buf_offs,
497  int blk_size)
498 {
499  band->dc_transform(prev_dc, band->buf + buf_offs,
500  band->pitch, blk_size);
501 
502  return 0;
503 }
504 
507  int mv_x, int mv_y,
508  int mv_x2, int mv_y2,
509  int *prev_dc, int is_intra,
510  int mc_type, int mc_type2,
511  uint32_t quant, int offs,
512  AVCodecContext *avctx)
513 {
514  const uint16_t *base_tab = is_intra ? band->intra_base : band->inter_base;
515  RVMapDesc *rvmap = band->rv_map;
516  uint8_t col_flags[8];
517  int32_t trvec[64];
518  uint32_t sym = 0, lo, hi, q;
519  int pos, run, val;
520  int blk_size = band->blk_size;
521  int num_coeffs = blk_size * blk_size;
522  int col_mask = blk_size - 1;
523  int scan_pos = -1;
524  int min_size = band->pitch * (band->transform_size - 1) +
525  band->transform_size;
526  int buf_size = band->pitch * band->aheight - offs;
527 
528  if (min_size > buf_size)
529  return AVERROR_INVALIDDATA;
530 
531  if (!band->scan) {
532  av_log(avctx, AV_LOG_ERROR, "Scan pattern is not set.\n");
533  return AVERROR_INVALIDDATA;
534  }
535 
536  /* zero transform vector */
537  memset(trvec, 0, num_coeffs * sizeof(trvec[0]));
538  /* zero column flags */
539  memset(col_flags, 0, sizeof(col_flags));
540  while (scan_pos <= num_coeffs) {
541  sym = get_vlc2(gb, band->blk_vlc.tab->table,
542  IVI_VLC_BITS, 1);
543  if (sym == rvmap->eob_sym)
544  break; /* End of block */
545 
546  /* Escape - run/val explicitly coded using 3 vlc codes */
547  if (sym == rvmap->esc_sym) {
548  run = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1) + 1;
549  lo = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1);
550  hi = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1);
551  /* merge them and convert into signed val */
552  val = IVI_TOSIGNED((hi << 6) | lo);
553  } else {
554  if (sym >= 256U) {
555  av_log(avctx, AV_LOG_ERROR, "Invalid sym encountered: %"PRIu32".\n", sym);
556  return AVERROR_INVALIDDATA;
557  }
558  run = rvmap->runtab[sym];
559  val = rvmap->valtab[sym];
560  }
561 
562  /* de-zigzag and dequantize */
563  scan_pos += run;
564  if (scan_pos >= num_coeffs || scan_pos < 0)
565  break;
566  pos = band->scan[scan_pos];
567 
568  if (!val)
569  ff_dlog(avctx, "Val = 0 encountered!\n");
570 
571  q = (base_tab[pos] * quant) >> 9;
572  if (q > 1)
573  val = val * q + FFSIGN(val) * (((q ^ 1) - 1) >> 1);
574  trvec[pos] = val;
575  /* track columns containing non-zero coeffs */
576  col_flags[pos & col_mask] |= !!val;
577  }
578 
579  if (scan_pos < 0 || scan_pos >= num_coeffs && sym != rvmap->eob_sym)
580  return AVERROR_INVALIDDATA; /* corrupt block data */
581 
582  /* undoing DC coeff prediction for intra-blocks */
583  if (is_intra && band->is_2d_trans) {
584  *prev_dc += trvec[0];
585  trvec[0] = *prev_dc;
586  col_flags[0] |= !!*prev_dc;
587  }
588 
589  if(band->transform_size > band->blk_size){
590  av_log(NULL, AV_LOG_ERROR, "Too large transform\n");
591  return AVERROR_INVALIDDATA;
592  }
593 
594  /* apply inverse transform */
595  band->inv_transform(trvec, band->buf + offs,
596  band->pitch, col_flags);
597 
598  /* apply motion compensation */
599  if (!is_intra)
600  return ivi_mc(band, mc, mc_avg, offs, mv_x, mv_y, mv_x2, mv_y2,
601  mc_type, mc_type2);
602 
603  return 0;
604 }
605 /*
606  * Decode block data:
607  * extract huffman-coded transform coefficients from the bitstream,
608  * dequantize them, apply inverse transform and motion compensation
609  * in order to reconstruct the picture.
610  *
611  * @param[in,out] gb the GetBit context
612  * @param[in] band pointer to the band descriptor
613  * @param[in] tile pointer to the tile descriptor
614  * @return result code: 0 - OK, -1 = error (corrupted blocks data)
615  */
616 static int ivi_decode_blocks(GetBitContext *gb, const IVIBandDesc *band,
617  IVITile *tile, AVCodecContext *avctx)
618 {
619  int mbn, blk, num_blocks, blk_size, ret, is_intra;
620  int mc_type = 0, mc_type2 = -1;
621  int mv_x = 0, mv_y = 0, mv_x2 = 0, mv_y2 = 0;
622  int32_t prev_dc;
623  uint32_t cbp, quant, buf_offs;
624  IVIMbInfo *mb;
625  ivi_mc_func mc_with_delta_func, mc_no_delta_func;
626  ivi_mc_avg_func mc_avg_with_delta_func, mc_avg_no_delta_func;
627  const uint8_t *scale_tab;
628 
629  /* init intra prediction for the DC coefficient */
630  prev_dc = 0;
631  blk_size = band->blk_size;
632  /* number of blocks per mb */
633  num_blocks = (band->mb_size != blk_size) ? 4 : 1;
634  if (blk_size == 8) {
635  mc_with_delta_func = ff_ivi_mc_8x8_delta;
636  mc_no_delta_func = ff_ivi_mc_8x8_no_delta;
637  mc_avg_with_delta_func = ff_ivi_mc_avg_8x8_delta;
638  mc_avg_no_delta_func = ff_ivi_mc_avg_8x8_no_delta;
639  } else {
640  mc_with_delta_func = ff_ivi_mc_4x4_delta;
641  mc_no_delta_func = ff_ivi_mc_4x4_no_delta;
642  mc_avg_with_delta_func = ff_ivi_mc_avg_4x4_delta;
643  mc_avg_no_delta_func = ff_ivi_mc_avg_4x4_no_delta;
644  }
645 
646  for (mbn = 0, mb = tile->mbs; mbn < tile->num_MBs; mb++, mbn++) {
647  is_intra = !mb->type;
648  cbp = mb->cbp;
649  buf_offs = mb->buf_offs;
650 
651  quant = band->glob_quant + mb->q_delta;
652  if (avctx->codec_id == AV_CODEC_ID_INDEO4)
653  quant = av_clip_uintp2(quant, 5);
654  else
655  quant = av_clip(quant, 0, 23);
656 
657  scale_tab = is_intra ? band->intra_scale : band->inter_scale;
658  if (scale_tab)
659  quant = scale_tab[quant];
660 
661  if (!is_intra) {
662  mv_x = mb->mv_x;
663  mv_y = mb->mv_y;
664  mv_x2 = mb->b_mv_x;
665  mv_y2 = mb->b_mv_y;
666  if (band->is_halfpel) {
667  mc_type = ((mv_y & 1) << 1) | (mv_x & 1);
668  mc_type2 = ((mv_y2 & 1) << 1) | (mv_x2 & 1);
669  mv_x >>= 1;
670  mv_y >>= 1;
671  mv_x2 >>= 1;
672  mv_y2 >>= 1; /* convert halfpel vectors into fullpel ones */
673  }
674  if (mb->type == 2)
675  mc_type = -1;
676  if (mb->type != 2 && mb->type != 3)
677  mc_type2 = -1;
678  if (mb->type) {
679  int dmv_x, dmv_y, cx, cy;
680 
681  dmv_x = mb->mv_x >> band->is_halfpel;
682  dmv_y = mb->mv_y >> band->is_halfpel;
683  cx = mb->mv_x & band->is_halfpel;
684  cy = mb->mv_y & band->is_halfpel;
685 
686  if (mb->xpos + dmv_x < 0 ||
687  mb->xpos + dmv_x + band->mb_size + cx > band->pitch ||
688  mb->ypos + dmv_y < 0 ||
689  mb->ypos + dmv_y + band->mb_size + cy > band->aheight) {
690  return AVERROR_INVALIDDATA;
691  }
692  }
693  if (mb->type == 2 || mb->type == 3) {
694  int dmv_x, dmv_y, cx, cy;
695 
696  dmv_x = mb->b_mv_x >> band->is_halfpel;
697  dmv_y = mb->b_mv_y >> band->is_halfpel;
698  cx = mb->b_mv_x & band->is_halfpel;
699  cy = mb->b_mv_y & band->is_halfpel;
700 
701  if (mb->xpos + dmv_x < 0 ||
702  mb->xpos + dmv_x + band->mb_size + cx > band->pitch ||
703  mb->ypos + dmv_y < 0 ||
704  mb->ypos + dmv_y + band->mb_size + cy > band->aheight) {
705  return AVERROR_INVALIDDATA;
706  }
707  }
708  }
709 
710  for (blk = 0; blk < num_blocks; blk++) {
711  /* adjust block position in the buffer according to its number */
712  if (blk & 1) {
713  buf_offs += blk_size;
714  } else if (blk == 2) {
715  buf_offs -= blk_size;
716  buf_offs += blk_size * band->pitch;
717  }
718 
719  if (cbp & 1) { /* block coded ? */
720  ret = ivi_decode_coded_blocks(gb, band, mc_with_delta_func,
721  mc_avg_with_delta_func,
722  mv_x, mv_y, mv_x2, mv_y2,
723  &prev_dc, is_intra,
724  mc_type, mc_type2, quant,
725  buf_offs, avctx);
726  if (ret < 0)
727  return ret;
728  } else {
729  int buf_size = band->pitch * band->aheight - buf_offs;
730  int min_size = (blk_size - 1) * band->pitch + blk_size;
731 
732  if (min_size > buf_size)
733  return AVERROR_INVALIDDATA;
734  /* block not coded */
735  /* for intra blocks apply the dc slant transform */
736  /* for inter - perform the motion compensation without delta */
737  if (is_intra) {
738  ret = ivi_dc_transform(band, &prev_dc, buf_offs, blk_size);
739  if (ret < 0)
740  return ret;
741  } else {
742  ret = ivi_mc(band, mc_no_delta_func, mc_avg_no_delta_func,
743  buf_offs, mv_x, mv_y, mv_x2, mv_y2,
744  mc_type, mc_type2);
745  if (ret < 0)
746  return ret;
747  }
748  }
749 
750  cbp >>= 1;
751  }// for blk
752  }// for mbn
753 
754  align_get_bits(gb);
755 
756  return 0;
757 }
758 
759 /**
760  * Handle empty tiles by performing data copying and motion
761  * compensation respectively.
762  *
763  * @param[in] avctx ptr to the AVCodecContext
764  * @param[in] band pointer to the band descriptor
765  * @param[in] tile pointer to the tile descriptor
766  * @param[in] mv_scale scaling factor for motion vectors
767  */
768 static int ivi_process_empty_tile(AVCodecContext *avctx, const IVIBandDesc *band,
769  IVITile *tile, int32_t mv_scale)
770 {
771  int x, y, need_mc, mbn, blk, num_blocks, mv_x, mv_y, mc_type;
772  int offs, mb_offset, row_offset, ret;
773  IVIMbInfo *mb, *ref_mb;
774  const int16_t *src;
775  int16_t *dst;
776  ivi_mc_func mc_no_delta_func;
777  int clear_first = !band->qdelta_present && !band->plane && !band->band_num;
778  int mb_size = band->mb_size;
779  int xend = tile->xpos + tile->width;
780  int is_halfpel = band->is_halfpel;
781  int pitch = band->pitch;
782 
783  if (tile->num_MBs != IVI_MBs_PER_TILE(tile->width, tile->height, mb_size)) {
784  av_log(avctx, AV_LOG_ERROR, "Allocated tile size %d mismatches "
785  "parameters %d in ivi_process_empty_tile()\n",
786  tile->num_MBs, IVI_MBs_PER_TILE(tile->width, tile->height, mb_size));
787  return AVERROR_INVALIDDATA;
788  }
789 
790  offs = tile->ypos * pitch + tile->xpos;
791  mb = tile->mbs;
792  ref_mb = tile->ref_mbs;
793  row_offset = mb_size * pitch;
794  need_mc = 0; /* reset the mc tracking flag */
795 
796  for (y = tile->ypos; y < (tile->ypos + tile->height); y += mb_size) {
797  mb_offset = offs;
798 
799  for (x = tile->xpos; x < xend; x += mb_size) {
800  mb->xpos = x;
801  mb->ypos = y;
802  mb->buf_offs = mb_offset;
803 
804  mb->type = 1; /* set the macroblocks type = INTER */
805  mb->cbp = 0; /* all blocks are empty */
806 
807  if (clear_first) {
808  mb->q_delta = band->glob_quant;
809  mb->mv_x = 0;
810  mb->mv_y = 0;
811  }
812 
813  if (ref_mb) {
814  if (band->inherit_qdelta)
815  mb->q_delta = ref_mb->q_delta;
816 
817  if (band->inherit_mv) {
818  /* motion vector inheritance */
819  if (mv_scale) {
820  mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);
821  mb->mv_y = ivi_scale_mv(ref_mb->mv_y, mv_scale);
822  } else {
823  mb->mv_x = ref_mb->mv_x;
824  mb->mv_y = ref_mb->mv_y;
825  }
826  need_mc |= mb->mv_x || mb->mv_y; /* tracking non-zero motion vectors */
827  {
828  int dmv_x, dmv_y, cx, cy;
829 
830  dmv_x = mb->mv_x >> is_halfpel;
831  dmv_y = mb->mv_y >> is_halfpel;
832  cx = mb->mv_x & is_halfpel;
833  cy = mb->mv_y & is_halfpel;
834 
835  if ( mb->xpos + dmv_x < 0
836  || mb->xpos + dmv_x + mb_size + cx > pitch
837  || mb->ypos + dmv_y < 0
838  || mb->ypos + dmv_y + mb_size + cy > band->aheight) {
839  av_log(avctx, AV_LOG_ERROR, "MV out of bounds\n");
840  return AVERROR_INVALIDDATA;
841  }
842  }
843  }
844  ref_mb++;
845  }
846 
847  mb++;
848  mb_offset += mb_size;
849  } // for x
850  offs += row_offset;
851  } // for y
852 
853  if (band->inherit_mv && need_mc) { /* apply motion compensation if there is at least one non-zero motion vector */
854  num_blocks = (mb_size != band->blk_size) ? 4 : 1; /* number of blocks per mb */
855  mc_no_delta_func = (band->blk_size == 8) ? ff_ivi_mc_8x8_no_delta
857 
858  for (mbn = 0, mb = tile->mbs; mbn < tile->num_MBs; mb++, mbn++) {
859  mv_x = mb->mv_x;
860  mv_y = mb->mv_y;
861  if (!band->is_halfpel) {
862  mc_type = 0; /* we have only fullpel vectors */
863  } else {
864  mc_type = ((mv_y & 1) << 1) | (mv_x & 1);
865  mv_x >>= 1;
866  mv_y >>= 1; /* convert halfpel vectors into fullpel ones */
867  }
868 
869  for (blk = 0; blk < num_blocks; blk++) {
870  /* adjust block position in the buffer according with its number */
871  offs = mb->buf_offs + band->blk_size * ((blk & 1) + !!(blk & 2) * pitch);
872  ret = ivi_mc(band, mc_no_delta_func, 0, offs,
873  mv_x, mv_y, 0, 0, mc_type, -1);
874  if (ret < 0)
875  return ret;
876  }
877  }
878  } else {
879  /* copy data from the reference tile into the current one */
880  src = band->ref_buf + tile->ypos * pitch + tile->xpos;
881  dst = band->buf + tile->ypos * pitch + tile->xpos;
882  for (y = 0; y < tile->height; y++) {
883  memcpy(dst, src, tile->width*sizeof(band->buf[0]));
884  src += pitch;
885  dst += pitch;
886  }
887  }
888 
889  return 0;
890 }
891 
892 
893 #ifdef DEBUG
894 static uint16_t ivi_calc_band_checksum(const IVIBandDesc *band)
895 {
896  int x, y;
897  int16_t *src, checksum;
898 
899  src = band->buf;
900  checksum = 0;
901 
902  for (y = 0; y < band->height; src += band->pitch, y++)
903  for (x = 0; x < band->width; x++)
904  checksum += src[x];
905 
906  return checksum;
907 }
908 #endif
909 
910 /*
911  * Convert and output the current plane.
912  * This conversion is done by adding back the bias value of 128
913  * (subtracted in the encoder) and clipping the result.
914  *
915  * @param[in] plane pointer to the descriptor of the plane being processed
916  * @param[out] dst pointer to the buffer receiving converted pixels
917  * @param[in] dst_pitch pitch for moving to the next y line
918  */
919 static void ivi_output_plane(IVIPlaneDesc *plane, uint8_t *dst, ptrdiff_t dst_pitch)
920 {
921  int x, y;
922  const int16_t *src = plane->bands[0].buf;
923  ptrdiff_t pitch = plane->bands[0].pitch;
924 
925  if (!src)
926  return;
927 
928  for (y = 0; y < plane->height; y++) {
929  int m = 0;
930  int w = plane->width;
931  for (x = 0; x < w; x++) {
932  int t = src[x] + 128;
933  dst[x] = t;
934  m |= t;
935  }
936  if (m & ~255)
937  for (x = 0; x < w; x++)
938  dst[x] = av_clip_uint8(src[x] + 128);
939  src += pitch;
940  dst += dst_pitch;
941  }
942 }
943 
944 /**
945  * Decode an Indeo 4 or 5 band.
946  *
947  * @param[in,out] ctx ptr to the decoder context
948  * @param[in,out] band ptr to the band descriptor
949  * @param[in] avctx ptr to the AVCodecContext
950  * @return result code: 0 = OK, -1 = error
951  */
953  IVIBandDesc *band, AVCodecContext *avctx)
954 {
955  int result, i, t, idx1, idx2, pos;
956  IVITile *tile;
957 
958  band->buf = band->bufs[ctx->dst_buf];
959  if (!band->buf) {
960  av_log(avctx, AV_LOG_ERROR, "Band buffer points to no data!\n");
961  return AVERROR_INVALIDDATA;
962  }
963  if (ctx->is_indeo4 && ctx->frame_type == IVI4_FRAMETYPE_BIDIR) {
964  band->ref_buf = band->bufs[ctx->b_ref_buf];
965  band->b_ref_buf = band->bufs[ctx->ref_buf];
966  } else {
967  band->ref_buf = band->bufs[ctx->ref_buf];
968  band->b_ref_buf = 0;
969  }
970  band->data_ptr = ctx->frame_data + (get_bits_count(&ctx->gb) >> 3);
971 
972  result = ctx->decode_band_hdr(ctx, band, avctx);
973  if (result) {
974  av_log(avctx, AV_LOG_ERROR, "Error while decoding band header: %d\n",
975  result);
976  return result;
977  }
978 
979  if (band->is_empty) {
980  av_log(avctx, AV_LOG_ERROR, "Empty band encountered!\n");
981  return AVERROR_INVALIDDATA;
982  }
983 
984  band->rv_map = &ctx->rvmap_tabs[band->rvmap_sel];
985 
986  /* apply corrections to the selected rvmap table if present */
987  for (i = 0; i < band->num_corr; i++) {
988  idx1 = band->corr[i * 2];
989  idx2 = band->corr[i * 2 + 1];
990  FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);
991  FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);
992  if (idx1 == band->rv_map->eob_sym || idx2 == band->rv_map->eob_sym)
993  band->rv_map->eob_sym ^= idx1 ^ idx2;
994  if (idx1 == band->rv_map->esc_sym || idx2 == band->rv_map->esc_sym)
995  band->rv_map->esc_sym ^= idx1 ^ idx2;
996  }
997 
998  pos = get_bits_count(&ctx->gb);
999 
1000  for (t = 0; t < band->num_tiles; t++) {
1001  tile = &band->tiles[t];
1002 
1003  if (tile->mb_size != band->mb_size) {
1004  av_log(avctx, AV_LOG_ERROR, "MB sizes mismatch: %d vs. %d\n",
1005  band->mb_size, tile->mb_size);
1006  return AVERROR_INVALIDDATA;
1007  }
1008  tile->is_empty = get_bits1(&ctx->gb);
1009  if (tile->is_empty) {
1010  result = ivi_process_empty_tile(avctx, band, tile,
1011  (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3));
1012  if (result < 0)
1013  break;
1014  ff_dlog(avctx, "Empty tile encountered!\n");
1015  } else {
1016  tile->data_size = ivi_dec_tile_data_size(&ctx->gb);
1017  if (!tile->data_size) {
1018  av_log(avctx, AV_LOG_ERROR, "Tile data size is zero!\n");
1019  result = AVERROR_INVALIDDATA;
1020  break;
1021  }
1022 
1023  result = ctx->decode_mb_info(ctx, band, tile, avctx);
1024  if (result < 0)
1025  break;
1026 
1027  result = ivi_decode_blocks(&ctx->gb, band, tile, avctx);
1028  if (result < 0) {
1029  av_log(avctx, AV_LOG_ERROR,
1030  "Corrupted tile data encountered!\n");
1031  break;
1032  }
1033 
1034  if (((get_bits_count(&ctx->gb) - pos) >> 3) != tile->data_size) {
1035  av_log(avctx, AV_LOG_ERROR,
1036  "Tile data_size mismatch!\n");
1037  result = AVERROR_INVALIDDATA;
1038  break;
1039  }
1040 
1041  pos += tile->data_size << 3; // skip to next tile
1042  }
1043  }
1044 
1045  /* restore the selected rvmap table by applying its corrections in
1046  * reverse order */
1047  for (i = band->num_corr-1; i >= 0; i--) {
1048  idx1 = band->corr[i*2];
1049  idx2 = band->corr[i*2+1];
1050  FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);
1051  FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);
1052  if (idx1 == band->rv_map->eob_sym || idx2 == band->rv_map->eob_sym)
1053  band->rv_map->eob_sym ^= idx1 ^ idx2;
1054  if (idx1 == band->rv_map->esc_sym || idx2 == band->rv_map->esc_sym)
1055  band->rv_map->esc_sym ^= idx1 ^ idx2;
1056  }
1057 
1058 #ifdef DEBUG
1059  if (band->checksum_present) {
1060  uint16_t chksum = ivi_calc_band_checksum(band);
1061  if (chksum != band->checksum) {
1062  av_log(avctx, AV_LOG_ERROR,
1063  "Band checksum mismatch! Plane %d, band %d, "
1064  "received: %"PRIx32", calculated: %"PRIx16"\n",
1065  band->plane, band->band_num, band->checksum, chksum);
1066  }
1067  }
1068 #endif
1069 
1070  align_get_bits(&ctx->gb);
1071 
1072  return result;
1073 }
1074 
1075 int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
1076  AVPacket *avpkt)
1077 {
1078  IVI45DecContext *ctx = avctx->priv_data;
1079  const uint8_t *buf = avpkt->data;
1080  AVFrame *frame = data;
1081  int buf_size = avpkt->size;
1082  int result, p, b;
1083 
1084  result = init_get_bits8(&ctx->gb, buf, buf_size);
1085  if (result < 0)
1086  return result;
1087  ctx->frame_data = buf;
1088  ctx->frame_size = buf_size;
1089 
1090  result = ctx->decode_pic_hdr(ctx, avctx);
1091  if (result) {
1092  av_log(avctx, AV_LOG_ERROR,
1093  "Error while decoding picture header: %d\n", result);
1094  return result;
1095  }
1096  if (ctx->gop_invalid)
1097  return AVERROR_INVALIDDATA;
1098 
1099  if (ctx->is_indeo4 && ctx->frame_type == IVI4_FRAMETYPE_NULL_LAST) {
1100  if (ctx->got_p_frame) {
1101  av_frame_move_ref(data, ctx->p_frame);
1102  *got_frame = 1;
1103  ctx->got_p_frame = 0;
1104  } else {
1105  *got_frame = 0;
1106  }
1107  return buf_size;
1108  }
1109 
1110  if (ctx->gop_flags & IVI5_IS_PROTECTED) {
1111  avpriv_report_missing_feature(avctx, "Password-protected clip");
1112  return AVERROR_PATCHWELCOME;
1113  }
1114 
1115  if (!ctx->planes[0].bands) {
1116  av_log(avctx, AV_LOG_ERROR, "Color planes not initialized yet\n");
1117  return AVERROR_INVALIDDATA;
1118  }
1119 
1120  ctx->switch_buffers(ctx);
1121 
1122  //{ START_TIMER;
1123 
1124  if (ctx->is_nonnull_frame(ctx)) {
1125  ctx->buf_invalid[ctx->dst_buf] = 1;
1126  for (p = 0; p < 3; p++) {
1127  for (b = 0; b < ctx->planes[p].num_bands; b++) {
1128  result = decode_band(ctx, &ctx->planes[p].bands[b], avctx);
1129  if (result < 0) {
1130  av_log(avctx, AV_LOG_ERROR,
1131  "Error while decoding band: %d, plane: %d\n", b, p);
1132  return result;
1133  }
1134  }
1135  }
1136  ctx->buf_invalid[ctx->dst_buf] = 0;
1137  } else {
1138  if (ctx->is_scalable)
1139  return AVERROR_INVALIDDATA;
1140 
1141  for (p = 0; p < 3; p++) {
1142  if (!ctx->planes[p].bands[0].buf)
1143  return AVERROR_INVALIDDATA;
1144  }
1145  }
1146  if (ctx->buf_invalid[ctx->dst_buf])
1147  return -1;
1148 
1149  //STOP_TIMER("decode_planes"); }
1150 
1151  if (!ctx->is_nonnull_frame(ctx))
1152  return buf_size;
1153 
1154  result = ff_set_dimensions(avctx, ctx->planes[0].width, ctx->planes[0].height);
1155  if (result < 0)
1156  return result;
1157 
1158  if ((result = ff_get_buffer(avctx, frame, 0)) < 0)
1159  return result;
1160 
1161  if (ctx->is_scalable) {
1162  if (ctx->is_indeo4)
1163  ff_ivi_recompose_haar(&ctx->planes[0], frame->data[0], frame->linesize[0]);
1164  else
1165  ff_ivi_recompose53 (&ctx->planes[0], frame->data[0], frame->linesize[0]);
1166  } else {
1167  ivi_output_plane(&ctx->planes[0], frame->data[0], frame->linesize[0]);
1168  }
1169 
1170  ivi_output_plane(&ctx->planes[2], frame->data[1], frame->linesize[1]);
1171  ivi_output_plane(&ctx->planes[1], frame->data[2], frame->linesize[2]);
1172 
1173  *got_frame = 1;
1174 
1175  /* If the bidirectional mode is enabled, next I and the following P
1176  * frame will be sent together. Unfortunately the approach below seems
1177  * to be the only way to handle the B-frames mode.
1178  * That's exactly the same Intel decoders do.
1179  */
1180  if (ctx->is_indeo4 && ctx->frame_type == IVI4_FRAMETYPE_INTRA) {
1181  int left;
1182 
1183  // skip version string
1184  while (get_bits(&ctx->gb, 8)) {
1185  if (get_bits_left(&ctx->gb) < 8)
1186  return AVERROR_INVALIDDATA;
1187  }
1188  left = get_bits_count(&ctx->gb) & 0x18;
1189  skip_bits_long(&ctx->gb, 64 - left);
1190  if (get_bits_left(&ctx->gb) > 18 &&
1191  show_bits_long(&ctx->gb, 21) == 0xBFFF8) { // syncheader + inter type
1192  AVPacket pkt;
1193  pkt.data = avpkt->data + (get_bits_count(&ctx->gb) >> 3);
1194  pkt.size = get_bits_left(&ctx->gb) >> 3;
1195  ff_ivi_decode_frame(avctx, ctx->p_frame, &ctx->got_p_frame, &pkt);
1196  }
1197  }
1198 
1199  if (ctx->show_indeo4_info) {
1200  if (ctx->is_scalable)
1201  av_log(avctx, AV_LOG_DEBUG, "This video uses scalability mode\n");
1202  if (ctx->uses_tiling)
1203  av_log(avctx, AV_LOG_DEBUG, "This video uses local decoding\n");
1204  if (ctx->has_b_frames)
1205  av_log(avctx, AV_LOG_DEBUG, "This video contains B-frames\n");
1206  if (ctx->has_transp)
1207  av_log(avctx, AV_LOG_DEBUG, "Transparency mode is enabled\n");
1208  if (ctx->uses_haar)
1209  av_log(avctx, AV_LOG_DEBUG, "This video uses Haar transform\n");
1210  if (ctx->uses_fullpel)
1211  av_log(avctx, AV_LOG_DEBUG, "This video uses fullpel motion vectors\n");
1212  ctx->show_indeo4_info = 0;
1213  }
1214 
1215  return buf_size;
1216 }
1217 
1218 /**
1219  * Close Indeo5 decoder and clean up its context.
1220  */
1222 {
1223  IVI45DecContext *ctx = avctx->priv_data;
1224 
1225  ivi_free_buffers(&ctx->planes[0]);
1226 
1227  if (ctx->mb_vlc.cust_tab.table)
1228  ff_free_vlc(&ctx->mb_vlc.cust_tab);
1229 
1230  if (ctx->blk_vlc.cust_tab.table)
1231  ff_free_vlc(&ctx->blk_vlc.cust_tab);
1232 
1233  av_frame_free(&ctx->p_frame);
1234 
1235  return 0;
1236 }
1237 
1238 
1239 /**
1240  * Scan patterns shared between indeo4 and indeo5
1241  */
1243  0, 8, 16, 24, 32, 40, 48, 56,
1244  1, 9, 17, 25, 33, 41, 49, 57,
1245  2, 10, 18, 26, 34, 42, 50, 58,
1246  3, 11, 19, 27, 35, 43, 51, 59,
1247  4, 12, 20, 28, 36, 44, 52, 60,
1248  5, 13, 21, 29, 37, 45, 53, 61,
1249  6, 14, 22, 30, 38, 46, 54, 62,
1250  7, 15, 23, 31, 39, 47, 55, 63
1251 };
1252 
1254  0, 1, 2, 3, 4, 5, 6, 7,
1255  8, 9, 10, 11, 12, 13, 14, 15,
1256  16, 17, 18, 19, 20, 21, 22, 23,
1257  24, 25, 26, 27, 28, 29, 30, 31,
1258  32, 33, 34, 35, 36, 37, 38, 39,
1259  40, 41, 42, 43, 44, 45, 46, 47,
1260  48, 49, 50, 51, 52, 53, 54, 55,
1261  56, 57, 58, 59, 60, 61, 62, 63
1262 };
1263 
1265  0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15
1266 };
1267 
1268 
1269 /**
1270  * Run-value (RLE) tables.
1271  */
1273 { /* MapTab0 */
1274  5, /* eob_sym */
1275  2, /* esc_sym */
1276  /* run table */
1277  {1, 1, 0, 1, 1, 0, 1, 1, 2, 2, 1, 1, 1, 1, 3, 3,
1278  1, 1, 2, 2, 1, 1, 4, 4, 1, 1, 1, 1, 2, 2, 5, 5,
1279  1, 1, 3, 3, 1, 1, 6, 6, 1, 2, 1, 2, 7, 7, 1, 1,
1280  8, 8, 1, 1, 4, 2, 1, 4, 2, 1, 3, 3, 1, 1, 1, 9,
1281  9, 1, 2, 1, 2, 1, 5, 5, 1, 1, 10, 10, 1, 1, 3, 3,
1282  2, 2, 1, 1, 11, 11, 6, 4, 4, 1, 6, 1, 2, 1, 2, 12,
1283  8, 1, 12, 7, 8, 7, 1, 16, 1, 16, 1, 3, 3, 13, 1, 13,
1284  2, 2, 1, 15, 1, 5, 14, 15, 1, 5, 14, 1, 17, 8, 17, 8,
1285  1, 4, 4, 2, 2, 1, 25, 25, 24, 24, 1, 3, 1, 3, 1, 8,
1286  6, 7, 6, 1, 18, 8, 18, 1, 7, 23, 2, 2, 23, 1, 1, 21,
1287  22, 9, 9, 22, 19, 1, 21, 5, 19, 5, 1, 33, 20, 33, 20, 8,
1288  4, 4, 1, 32, 2, 2, 8, 3, 32, 26, 3, 1, 7, 7, 26, 6,
1289  1, 6, 1, 1, 16, 1, 10, 1, 10, 2, 16, 29, 28, 2, 29, 28,
1290  1, 27, 5, 8, 5, 27, 1, 8, 3, 7, 3, 31, 41, 31, 1, 41,
1291  6, 1, 6, 7, 4, 4, 1, 1, 2, 1, 2, 11, 34, 30, 11, 1,
1292  30, 15, 15, 34, 36, 40, 36, 40, 35, 35, 37, 37, 39, 39, 38, 38},
1293 
1294  /* value table */
1295  { 1, -1, 0, 2, -2, 0, 3, -3, 1, -1, 4, -4, 5, -5, 1, -1,
1296  6, -6, 2, -2, 7, -7, 1, -1, 8, -8, 9, -9, 3, -3, 1, -1,
1297  10, -10, 2, -2, 11, -11, 1, -1, 12, 4, -12, -4, 1, -1, 13, -13,
1298  1, -1, 14, -14, 2, 5, 15, -2, -5, -15, -3, 3, 16, -16, 17, 1,
1299  -1, -17, 6, 18, -6, -18, 2, -2, 19, -19, 1, -1, 20, -20, 4, -4,
1300  7, -7, 21, -21, 1, -1, 2, 3, -3, 22, -2, -22, 8, 23, -8, 1,
1301  2, -23, -1, 2, -2, -2, 24, 1, -24, -1, 25, 5, -5, 1, -25, -1,
1302  9, -9, 26, 1, -26, 3, 1, -1, 27, -3, -1, -27, 1, 3, -1, -3,
1303  28, -4, 4, 10, -10, -28, 1, -1, 1, -1, 29, 6, -29, -6, 30, -4,
1304  3, 3, -3, -30, 1, 4, -1, 31, -3, 1, 11, -11, -1, -31, 32, -1,
1305  -1, 2, -2, 1, 1, -32, 1, 4, -1, -4, 33, -1, 1, 1, -1, 5,
1306  5, -5, -33, -1, -12, 12, -5, -7, 1, 1, 7, 34, 4, -4, -1, 4,
1307  -34, -4, 35, 36, -2, -35, -2, -36, 2, 13, 2, -1, 1, -13, 1, -1,
1308  37, 1, -5, 6, 5, -1, 38, -6, -8, 5, 8, -1, 1, 1, -37, -1,
1309  5, 39, -5, -5, 6, -6, -38, -39, -14, 40, 14, 2, 1, 1, -2, -40,
1310  -1, -2, 2, -1, -1, -1, 1, 1, 1, -1, 1, -1, 1, -1, 1, -1}
1311 },{
1312  /* MapTab1 */
1313  0, /* eob_sym */
1314  38, /* esc_sym */
1315  /* run table */
1316  {0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 8, 6, 8, 7,
1317  7, 9, 9, 10, 10, 11, 11, 1, 12, 1, 12, 13, 13, 16, 14, 16,
1318  14, 15, 15, 17, 17, 18, 0, 18, 19, 20, 21, 19, 22, 21, 20, 22,
1319  25, 24, 2, 25, 24, 23, 23, 2, 26, 28, 26, 28, 29, 27, 29, 27,
1320  33, 33, 1, 32, 1, 3, 32, 30, 36, 3, 36, 30, 31, 31, 35, 34,
1321  37, 41, 34, 35, 37, 4, 41, 4, 49, 8, 8, 49, 40, 38, 5, 38,
1322  40, 39, 5, 39, 42, 43, 42, 7, 57, 6, 43, 44, 6, 50, 7, 44,
1323  57, 48, 50, 48, 45, 45, 46, 47, 51, 46, 47, 58, 1, 51, 58, 1,
1324  52, 59, 53, 9, 52, 55, 55, 59, 53, 56, 54, 56, 54, 9, 64, 64,
1325  60, 63, 60, 63, 61, 62, 61, 62, 2, 10, 2, 10, 11, 1, 11, 13,
1326  12, 1, 12, 13, 16, 16, 8, 8, 14, 3, 3, 15, 14, 15, 4, 4,
1327  1, 17, 17, 5, 1, 7, 7, 5, 6, 1, 2, 2, 6, 22, 1, 25,
1328  21, 22, 8, 24, 1, 21, 25, 24, 8, 18, 18, 23, 9, 20, 23, 33,
1329  29, 33, 20, 1, 19, 1, 29, 36, 9, 36, 19, 41, 28, 57, 32, 3,
1330  28, 3, 1, 27, 49, 49, 1, 32, 26, 26, 2, 4, 4, 7, 57, 41,
1331  2, 7, 10, 5, 37, 16, 10, 27, 8, 8, 13, 16, 37, 13, 1, 5},
1332 
1333  /* value table */
1334  {0, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, 1, -1, -1, 1,
1335  -1, 1, -1, 1, -1, 1, -1, 2, 1, -2, -1, 1, -1, 1, 1, -1,
1336  -1, 1, -1, 1, -1, 1, 0, -1, 1, 1, 1, -1, 1, -1, -1, -1,
1337  1, 1, 2, -1, -1, 1, -1, -2, 1, 1, -1, -1, 1, 1, -1, -1,
1338  1, -1, 3, 1, -3, 2, -1, 1, 1, -2, -1, -1, -1, 1, 1, 1,
1339  1, 1, -1, -1, -1, 2, -1, -2, 1, 2, -2, -1, 1, 1, 2, -1,
1340  -1, 1, -2, -1, 1, 1, -1, 2, 1, 2, -1, 1, -2, -1, -2, -1,
1341  -1, 1, 1, -1, 1, -1, 1, 1, 1, -1, -1, 1, 4, -1, -1, -4,
1342  1, 1, 1, 2, -1, -1, 1, -1, -1, 1, -1, -1, 1, -2, 1, -1,
1343  1, 1, -1, -1, 1, 1, -1, -1, 3, 2, -3, -2, 2, 5, -2, 2,
1344  2, -5, -2, -2, -2, 2, -3, 3, 2, 3, -3, 2, -2, -2, 3, -3,
1345  6, 2, -2, 3, -6, 3, -3, -3, 3, 7, -4, 4, -3, 2, -7, 2,
1346  2, -2, -4, 2, 8, -2, -2, -2, 4, 2, -2, 2, 3, 2, -2, -2,
1347  2, 2, -2, -8, -2, 9, -2, 2, -3, -2, 2, -2, 2, 2, 2, 4,
1348  -2, -4, 10, 2, 2, -2, -9, -2, 2, -2, 5, 4, -4, 4, -2, 2,
1349  -5, -4, -3, 4, 2, -3, 3, -2, -5, 5, 3, 3, -2, -3, -10, -4}
1350 },{
1351  /* MapTab2 */
1352  2, /* eob_sym */
1353  11, /* esc_sym */
1354  /* run table */
1355  {1, 1, 0, 2, 2, 1, 1, 3, 3, 4, 4, 0, 1, 1, 5, 5,
1356  2, 2, 6, 6, 7, 7, 1, 8, 1, 8, 3, 3, 9, 9, 1, 2,
1357  2, 1, 4, 10, 4, 10, 11, 11, 1, 5, 12, 12, 1, 5, 13, 13,
1358  3, 3, 6, 6, 2, 2, 14, 14, 16, 16, 15, 7, 15, 8, 8, 7,
1359  1, 1, 17, 17, 4, 4, 1, 1, 18, 18, 2, 2, 5, 5, 25, 3,
1360  9, 3, 25, 9, 19, 24, 19, 24, 1, 21, 20, 1, 21, 22, 20, 22,
1361  23, 23, 8, 6, 33, 6, 8, 33, 7, 7, 26, 26, 1, 32, 1, 32,
1362  28, 4, 28, 10, 29, 27, 27, 10, 41, 4, 29, 2, 2, 41, 36, 31,
1363  49, 31, 34, 30, 34, 36, 30, 35, 1, 49, 11, 5, 35, 11, 1, 3,
1364  3, 5, 37, 37, 8, 40, 8, 40, 12, 12, 42, 42, 1, 38, 16, 57,
1365  1, 6, 16, 39, 38, 6, 7, 7, 13, 13, 39, 43, 2, 43, 57, 2,
1366  50, 9, 44, 9, 50, 4, 15, 48, 44, 4, 1, 15, 48, 14, 14, 1,
1367  45, 45, 8, 3, 5, 8, 51, 47, 3, 46, 46, 47, 5, 51, 1, 17,
1368  17, 58, 1, 58, 2, 52, 52, 2, 53, 7, 59, 6, 6, 56, 53, 55,
1369  7, 55, 1, 54, 59, 56, 54, 10, 1, 10, 4, 60, 1, 60, 8, 4,
1370  8, 64, 64, 61, 1, 63, 3, 63, 62, 61, 5, 11, 5, 3, 11, 62},
1371 
1372  /* value table */
1373  { 1, -1, 0, 1, -1, 2, -2, 1, -1, 1, -1, 0, 3, -3, 1, -1,
1374  2, -2, 1, -1, 1, -1, 4, 1, -4, -1, 2, -2, 1, -1, 5, 3,
1375  -3, -5, 2, 1, -2, -1, 1, -1, 6, 2, 1, -1, -6, -2, 1, -1,
1376  3, -3, 2, -2, 4, -4, 1, -1, 1, -1, 1, 2, -1, 2, -2, -2,
1377  7, -7, 1, -1, 3, -3, 8, -8, 1, -1, 5, -5, 3, -3, 1, 4,
1378  2, -4, -1, -2, 1, 1, -1, -1, 9, 1, 1, -9, -1, 1, -1, -1,
1379  1, -1, 3, -3, 1, 3, -3, -1, 3, -3, 1, -1, 10, 1, -10, -1,
1380  1, 4, -1, 2, 1, -1, 1, -2, 1, -4, -1, 6, -6, -1, 1, 1,
1381  1, -1, 1, 1, -1, -1, -1, 1, 11, -1, -2, 4, -1, 2, -11, 5,
1382  -5, -4, -1, 1, 4, 1, -4, -1, -2, 2, 1, -1, 12, 1, -2, 1,
1383  -12, 4, 2, 1, -1, -4, 4, -4, 2, -2, -1, 1, 7, -1, -1, -7,
1384  -1, -3, 1, 3, 1, 5, 2, 1, -1, -5, 13, -2, -1, 2, -2, -13,
1385  1, -1, 5, 6, 5, -5, 1, 1, -6, 1, -1, -1, -5, -1, 14, 2,
1386  -2, 1, -14, -1, 8, 1, -1, -8, 1, 5, 1, 5, -5, 1, -1, 1,
1387  -5, -1, 15, 1, -1, -1, -1, 3, -15, -3, 6, 1, 16, -1, 6, -6,
1388  -6, 1, -1, 1, -16, 1, 7, -1, 1, -1, -6, -3, 6, -7, 3, -1}
1389 },{
1390  /* MapTab3 */
1391  0, /* eob_sym */
1392  35, /* esc_sym */
1393  /* run table */
1394  {0, 1, 1, 2, 2, 3, 3, 4, 4, 1, 1, 5, 5, 6, 6, 7,
1395  7, 8, 8, 9, 9, 2, 2, 10, 10, 1, 1, 11, 11, 12, 12, 3,
1396  3, 13, 13, 0, 14, 14, 16, 15, 16, 15, 4, 4, 17, 1, 17, 1,
1397  5, 5, 18, 18, 2, 2, 6, 6, 8, 19, 7, 8, 7, 19, 20, 20,
1398  21, 21, 22, 24, 22, 24, 23, 23, 1, 1, 25, 25, 3, 3, 26, 26,
1399  9, 9, 27, 27, 28, 28, 33, 29, 4, 33, 29, 1, 4, 1, 32, 32,
1400  2, 2, 31, 10, 30, 10, 30, 31, 34, 34, 5, 5, 36, 36, 35, 41,
1401  35, 11, 41, 11, 37, 1, 8, 8, 37, 6, 1, 6, 40, 7, 7, 40,
1402  12, 38, 12, 39, 39, 38, 49, 13, 49, 13, 3, 42, 3, 42, 16, 16,
1403  43, 43, 14, 14, 1, 1, 44, 15, 44, 15, 2, 2, 57, 48, 50, 48,
1404  57, 50, 4, 45, 45, 4, 46, 47, 47, 46, 1, 51, 1, 17, 17, 51,
1405  8, 9, 9, 5, 58, 8, 58, 5, 52, 52, 55, 56, 53, 56, 55, 59,
1406  59, 53, 54, 1, 6, 54, 7, 7, 6, 1, 2, 3, 2, 3, 64, 60,
1407  60, 10, 10, 64, 61, 62, 61, 63, 1, 63, 62, 1, 18, 24, 18, 4,
1408  25, 4, 8, 21, 21, 1, 24, 22, 25, 22, 8, 11, 19, 11, 23, 1,
1409  20, 23, 19, 20, 5, 12, 5, 1, 16, 2, 12, 13, 2, 13, 1, 16},
1410 
1411  /* value table */
1412  { 0, 1, -1, 1, -1, 1, -1, 1, -1, 2, -2, 1, -1, 1, -1, 1,
1413  -1, 1, -1, 1, -1, 2, -2, 1, -1, 3, -3, 1, -1, 1, -1, 2,
1414  -2, 1, -1, 0, 1, -1, 1, 1, -1, -1, 2, -2, 1, 4, -1, -4,
1415  2, -2, 1, -1, -3, 3, 2, -2, 2, 1, 2, -2, -2, -1, 1, -1,
1416  1, -1, 1, 1, -1, -1, 1, -1, 5, -5, 1, -1, 3, -3, 1, -1,
1417  2, -2, 1, -1, 1, -1, 1, 1, 3, -1, -1, 6, -3, -6, -1, 1,
1418  4, -4, 1, 2, 1, -2, -1, -1, 1, -1, 3, -3, 1, -1, 1, 1,
1419  -1, 2, -1, -2, 1, 7, -3, 3, -1, 3, -7, -3, 1, -3, 3, -1,
1420  2, 1, -2, 1, -1, -1, 1, 2, -1, -2, -4, -1, 4, 1, 2, -2,
1421  1, -1, -2, 2, 8, -8, -1, 2, 1, -2, -5, 5, 1, -1, -1, 1,
1422  -1, 1, 4, -1, 1, -4, -1, -1, 1, 1, 9, 1, -9, 2, -2, -1,
1423  -4, 3, -3, -4, -1, 4, 1, 4, 1, -1, 1, -1, 1, 1, -1, 1,
1424  -1, -1, -1, 10, 4, 1, 4, -4, -4, -10, 6, 5, -6, -5, 1, -1,
1425  1, 3, -3, -1, 1, -1, -1, -1, 11, 1, 1, -11, -2, -2, 2, 5,
1426  -2, -5, -5, 2, -2, 12, 2, -2, 2, 2, 5, -3, -2, 3, -2, -12,
1427  -2, 2, 2, 2, -5, 3, 5, 13, -3, 7, -3, -3, -7, 3, -13, 3}
1428 },{
1429  /* MapTab4 */
1430  0, /* eob_sym */
1431  34, /* esc_sym */
1432  /* run table */
1433  {0, 1, 1, 1, 2, 2, 1, 3, 3, 1, 1, 1, 4, 4, 1, 5,
1434  2, 1, 5, 2, 1, 1, 6, 6, 1, 1, 1, 1, 1, 7, 3, 1,
1435  2, 3, 0, 1, 2, 7, 1, 1, 1, 8, 1, 1, 8, 1, 1, 1,
1436  9, 1, 9, 1, 2, 1, 1, 2, 1, 1, 10, 4, 1, 10, 1, 4,
1437  1, 1, 1, 1, 1, 3, 1, 1, 1, 3, 2, 1, 5, 1, 1, 1,
1438  2, 5, 1, 11, 1, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1439  2, 1, 6, 1, 6, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 12,
1440  3, 1, 12, 1, 1, 1, 2, 1, 1, 3, 1, 1, 1, 1, 1, 1,
1441  4, 1, 1, 1, 2, 1, 1, 4, 1, 1, 1, 1, 1, 1, 2, 1,
1442  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 2, 1, 1, 5,
1443  1, 1, 1, 1, 1, 7, 1, 7, 1, 1, 2, 3, 1, 1, 1, 1,
1444  5, 1, 1, 1, 1, 1, 1, 2, 13, 1, 1, 1, 1, 1, 1, 1,
1445  1, 1, 1, 1, 1, 1, 1, 1, 13, 2, 1, 1, 4, 1, 1, 1,
1446  3, 1, 6, 1, 1, 1, 14, 1, 1, 1, 1, 1, 14, 6, 1, 1,
1447  1, 1, 15, 2, 4, 1, 2, 3, 15, 1, 1, 1, 8, 1, 1, 8,
1448  1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1},
1449 
1450  /* value table */
1451  { 0, 1, -1, 2, 1, -1, -2, 1, -1, 3, -3, 4, 1, -1, -4, 1,
1452  2, 5, -1, -2, -5, 6, 1, -1, -6, 7, -7, 8, -8, 1, 2, 9,
1453  3, -2, 0, -9, -3, -1, 10, -10, 11, 1, -11, 12, -1, -12, 13, -13,
1454  1, 14, -1, -14, 4, 15, -15, -4, 16, -16, 1, 2, 17, -1, -17, -2,
1455  18, -18, 19, -19, 20, 3, -20, 21, -21, -3, 5, 22, 2, -22, -23, 23,
1456  -5, -2, 24, 1, -24, -1, 25, -25, 26, -26, -27, 27, 28, 29, -28, -29,
1457  6, 30, 2, -31, -2, -30, 31, -6, -32, 32, 33, -33, 34, -35, -34, 1,
1458  4, -36, -1, 35, 37, 36, 7, -37, 38, -4, -38, 39, 41, 40, -40, -39,
1459  3, 42, -43, -41, -7, -42, 43, -3, 44, -44, 45, -45, 46, 47, 8, -47,
1460  -48, -46, 50, -50, 48, 49, 51, -49, 52, -52, 5, -51, -8, -53, 53, 3,
1461  -56, 56, 55, 54, -54, 2, 60, -2, -55, 58, 9, -5, 59, 57, -57, -63,
1462  -3, -58, -60, -61, 61, -59, -62, -9, 1, 64, 62, 69, -64, 63, 65, -67,
1463  -68, 66, -65, 68, -66, -69, 67, -70, -1, 10, 71, -71, 4, 73, 72, 70,
1464  6, -76, -3, 74, -78, -74, 1, 78, 80, -72, -75, 76, -1, 3, -73, 79,
1465  75, 77, 1, 11, -4, -79, -10, -6, -1, -77, -83, -80, 2, 81, -84, -2,
1466  83, -81, 82, -82, 84, -87, -86, 85, -11, -85, 86, -89, 87, -88, 88, 89}
1467 },{
1468  /* MapTab5 */
1469  2, /* eob_sym */
1470  33, /* esc_sym */
1471  /* run table */
1472  {1, 1, 0, 2, 1, 2, 1, 3, 3, 1, 1, 4, 4, 2, 2, 1,
1473  1, 5, 5, 6, 1, 6, 1, 7, 7, 3, 3, 2, 8, 2, 8, 1,
1474  1, 0, 9, 9, 1, 1, 10, 4, 10, 4, 11, 11, 2, 1, 2, 1,
1475  12, 12, 3, 3, 1, 1, 13, 5, 5, 13, 14, 1, 1, 14, 2, 2,
1476  6, 6, 15, 1, 1, 15, 16, 4, 7, 16, 4, 7, 1, 1, 3, 3,
1477  8, 8, 2, 2, 1, 1, 17, 17, 1, 1, 18, 18, 5, 5, 2, 2,
1478  1, 1, 9, 19, 9, 19, 20, 3, 3, 20, 1, 10, 21, 1, 10, 4,
1479  4, 21, 22, 6, 6, 22, 1, 1, 23, 24, 2, 2, 23, 24, 11, 1,
1480  1, 11, 7, 25, 7, 1, 1, 25, 8, 8, 3, 26, 3, 1, 12, 2,
1481  2, 26, 1, 12, 5, 5, 27, 4, 1, 4, 1, 27, 28, 1, 28, 13,
1482  1, 13, 2, 29, 2, 1, 32, 6, 1, 30, 14, 29, 14, 6, 3, 31,
1483  3, 1, 30, 1, 32, 31, 33, 9, 33, 1, 1, 7, 9, 7, 2, 2,
1484  1, 1, 4, 36, 34, 4, 5, 10, 10, 5, 34, 1, 1, 35, 8, 8,
1485  36, 3, 35, 1, 15, 3, 2, 1, 16, 15, 16, 2, 37, 1, 37, 1,
1486  1, 1, 6, 6, 38, 1, 38, 11, 1, 39, 39, 40, 11, 2, 41, 4,
1487  40, 1, 2, 4, 1, 1, 1, 41, 3, 1, 3, 1, 5, 7, 5, 7},
1488 
1489  /* value table */
1490  { 1, -1, 0, 1, 2, -1, -2, 1, -1, 3, -3, 1, -1, 2, -2, 4,
1491  -4, 1, -1, 1, 5, -1, -5, 1, -1, 2, -2, 3, 1, -3, -1, 6,
1492  -6, 0, 1, -1, 7, -7, 1, 2, -1, -2, 1, -1, 4, 8, -4, -8,
1493  1, -1, 3, -3, 9, -9, 1, 2, -2, -1, 1, 10, -10, -1, 5, -5,
1494  2, -2, 1, 11, -11, -1, 1, 3, 2, -1, -3, -2, 12, -12, 4, -4,
1495  2, -2, -6, 6, 13, -13, 1, -1, 14, -14, 1, -1, 3, -3, 7, -7,
1496  15, -15, 2, 1, -2, -1, 1, 5, -5, -1, -16, 2, 1, 16, -2, 4,
1497  -4, -1, 1, 3, -3, -1, 17, -17, 1, 1, -8, 8, -1, -1, 2, 18,
1498  -18, -2, 3, 1, -3, 19, -19, -1, 3, -3, 6, 1, -6, 20, 2, 9,
1499  -9, -1, -20, -2, 4, -4, 1, -5, 21, 5, -21, -1, 1, -22, -1, 2,
1500  22, -2, 10, 1, -10, 23, 1, 4, -23, 1, 2, -1, -2, -4, -7, 1,
1501  7, -24, -1, 24, -1, -1, 1, 3, -1, -25, 25, 4, -3, -4, 11, -11,
1502  26, -26, 6, 1, 1, -6, -5, -3, 3, 5, -1, -27, 27, 1, 4, -4,
1503  -1, -8, -1, 28, 2, 8, -12, -28, -2, -2, 2, 12, -1, 29, 1, -29,
1504  30, -30, 5, -5, 1, -31, -1, 3, 31, -1, 1, 1, -3, -13, 1, -7,
1505  -1, -32, 13, 7, 32, 33, -33, -1, -9, -34, 9, 34, -6, 5, 6, -5}
1506 },{
1507  /* MapTab6 */
1508  2, /* eob_sym */
1509  13, /* esc_sym */
1510  /* run table */
1511  {1, 1, 0, 1, 1, 2, 2, 1, 1, 3, 3, 1, 1, 0, 2, 2,
1512  4, 1, 4, 1, 1, 1, 5, 5, 1, 1, 6, 6, 2, 2, 1, 1,
1513  3, 3, 7, 7, 1, 1, 8, 8, 1, 1, 2, 2, 1, 9, 1, 9,
1514  4, 4, 10, 1, 1, 10, 1, 1, 11, 11, 3, 3, 1, 2, 1, 2,
1515  1, 1, 12, 12, 5, 5, 1, 1, 13, 1, 1, 13, 2, 2, 1, 1,
1516  6, 6, 1, 1, 4, 14, 4, 14, 3, 1, 3, 1, 1, 1, 15, 7,
1517  15, 2, 2, 7, 1, 1, 1, 8, 1, 8, 16, 16, 1, 1, 1, 1,
1518  2, 1, 1, 2, 1, 1, 3, 5, 5, 3, 4, 1, 1, 4, 1, 1,
1519  17, 17, 9, 1, 1, 9, 2, 2, 1, 1, 10, 10, 1, 6, 1, 1,
1520  6, 18, 1, 1, 18, 1, 1, 1, 2, 2, 3, 1, 3, 1, 1, 1,
1521  4, 1, 19, 1, 19, 7, 1, 1, 20, 1, 4, 20, 1, 7, 11, 2,
1522  1, 11, 21, 2, 8, 5, 1, 8, 1, 5, 21, 1, 1, 1, 22, 1,
1523  1, 22, 1, 1, 3, 3, 1, 23, 2, 12, 24, 1, 1, 2, 1, 1,
1524  12, 23, 1, 1, 24, 1, 1, 1, 4, 1, 1, 1, 2, 1, 6, 6,
1525  4, 2, 1, 1, 1, 1, 1, 1, 1, 14, 13, 3, 1, 25, 9, 25,
1526  14, 1, 9, 3, 13, 1, 1, 1, 1, 1, 10, 1, 1, 2, 10, 2},
1527 
1528  /* value table */
1529  {-20, -1, 0, 2, -2, 1, -1, 3, -3, 1, -1, 4, -4, 0, 2, -2,
1530  1, 5, -1, -5, 6, -6, 1, -1, 7, -7, 1, -1, 3, -3, 8, -8,
1531  2, -2, 1, -1, 9, -9, 1, -1, 10, -10, 4, -4, 11, 1, -11, -1,
1532  2, -2, 1, 12, -12, -1, 13, -13, 1, -1, 3, -3, 14, 5, -14, -5,
1533  -15, 15, -1, 1, 2, -2, 16, -16, 1, 17, -17, -1, 6, -6, 18, -18,
1534  2, -2, -19, 19, -3, 1, 3, -1, 4, 20, -4, 1, -21, 21, 1, 2,
1535  -1, -7, 7, -2, 22, -22, 23, 2, -23, -2, 1, -1, -24, 24, -25, 25,
1536  -8, -26, 26, 8, -27, 27, 5, 3, -3, -5, -4, 28, -28, 4, 29, -29,
1537  1, -1, -2, -30, 30, 2, 9, -9, -31, 31, 2, -2, -32, 3, 32, -33,
1538  -3, 1, 33, -34, -1, 34, -35, 35, -10, 10, -6, 36, 6, -36, 37, -37,
1539  -5, 38, 1, -38, -1, 3, 39, -39, -1, 40, 5, 1, -40, -3, 2, -11,
1540  -41, -2, 1, 11, -3, -4, 41, 3, 42, 4, -1, -43, -42, 43, 1, -44,
1541  45, -1, 44, -45, -7, 7, -46, 1, -12, 2, 1, -47, 46, 12, 47, 48,
1542  -2, -1, -48, 49, -1, -50, -49, 50, -6, -51, 51, 52, -13, 53, -4, 4,
1543  6, 13, -53, -52, -54, 55, 54, -55, -56, -2, 2, -8, 56, 1, -3, -1,
1544  2, 58, 3, 8, -2, 57, -58, -60, -59, -57, -3, 60, 59, -14, 3, 14}
1545 },{
1546  /* MapTab7 */
1547  2, /* eob_sym */
1548  38, /* esc_sym */
1549  /* run table */
1550  {1, 1, 0, 2, 2, 1, 1, 3, 3, 4, 4, 5, 5, 1, 1, 6,
1551  6, 2, 2, 7, 7, 8, 8, 1, 1, 3, 3, 9, 9, 10, 10, 1,
1552  1, 2, 2, 4, 4, 11, 0, 11, 12, 12, 13, 13, 1, 1, 5, 5,
1553  14, 14, 15, 16, 15, 16, 3, 3, 1, 6, 1, 6, 2, 2, 7, 7,
1554  8, 8, 17, 17, 1, 1, 4, 4, 18, 18, 2, 2, 1, 19, 1, 20,
1555  19, 20, 21, 21, 3, 3, 22, 22, 5, 5, 24, 1, 1, 23, 9, 23,
1556  24, 9, 2, 2, 10, 1, 1, 10, 6, 6, 25, 4, 4, 25, 7, 7,
1557  26, 8, 1, 8, 3, 1, 26, 3, 11, 11, 27, 27, 2, 28, 1, 2,
1558  28, 1, 12, 12, 5, 5, 29, 13, 13, 29, 32, 1, 1, 33, 31, 30,
1559  32, 4, 30, 33, 4, 31, 3, 14, 1, 1, 3, 34, 34, 2, 2, 14,
1560  6, 6, 35, 36, 35, 36, 1, 15, 1, 16, 16, 15, 7, 9, 7, 9,
1561  37, 8, 8, 37, 1, 1, 39, 2, 38, 39, 2, 40, 5, 38, 40, 5,
1562  3, 3, 4, 4, 10, 10, 1, 1, 1, 1, 41, 2, 41, 2, 6, 6,
1563  1, 1, 11, 42, 11, 43, 3, 42, 3, 17, 4, 43, 1, 17, 7, 1,
1564  8, 44, 4, 7, 44, 5, 8, 2, 5, 1, 2, 48, 45, 1, 12, 45,
1565  12, 48, 13, 13, 1, 9, 9, 46, 1, 46, 47, 47, 49, 18, 18, 49},
1566 
1567  /* value table */
1568  { 1, -1, 0, 1, -1, 2, -2, 1, -1, 1, -1, 1, -1, 3, -3, 1,
1569  -1, -2, 2, 1, -1, 1, -1, 4, -4, -2, 2, 1, -1, 1, -1, 5,
1570  -5, -3, 3, 2, -2, 1, 0, -1, 1, -1, 1, -1, 6, -6, 2, -2,
1571  1, -1, 1, 1, -1, -1, -3, 3, 7, 2, -7, -2, -4, 4, 2, -2,
1572  2, -2, 1, -1, 8, -8, 3, -3, 1, -1, -5, 5, 9, 1, -9, 1,
1573  -1, -1, 1, -1, -4, 4, 1, -1, 3, -3, 1, -10, 10, 1, 2, -1,
1574  -1, -2, 6, -6, 2, 11, -11, -2, 3, -3, 1, -4, 4, -1, 3, -3,
1575  1, 3, 12, -3, -5, -12, -1, 5, 2, -2, 1, -1, -7, 1, 13, 7,
1576  -1, -13, 2, -2, 4, -4, 1, 2, -2, -1, 1, 14, -14, 1, 1, 1,
1577  -1, -5, -1, -1, 5, -1, -6, 2, -15, 15, 6, 1, -1, -8, 8, -2,
1578  -4, 4, 1, 1, -1, -1, 16, 2, -16, -2, 2, -2, 4, 3, -4, -3,
1579  -1, -4, 4, 1, -17, 17, -1, -9, 1, 1, 9, 1, -5, -1, -1, 5,
1580  -7, 7, 6, -6, 3, -3, 18, -18, 19, -19, 1, -10, -1, 10, -5, 5,
1581  20, -20, -3, 1, 3, 1, 8, -1, -8, 2, 7, -1, -21, -2, 5, 21,
1582  5, -1, -7, -5, 1, -6, -5, -11, 6, 22, 11, 1, 1, -22, -3, -1,
1583  3, -1, 3, -3, -23, 4, -4, 1, 23, -1, 1, -1, 1, -2, 2, -1}
1584 },{
1585  /* MapTab8 */
1586  4, /* eob_sym */
1587  11, /* esc_sym */
1588  /* run table */
1589  {1, 1, 1, 1, 0, 2, 2, 1, 1, 3, 3, 0, 1, 1, 2, 2,
1590  4, 4, 1, 1, 5, 5, 1, 1, 2, 2, 3, 3, 6, 6, 1, 1,
1591  7, 7, 8, 1, 8, 2, 2, 1, 4, 4, 1, 3, 1, 3, 9, 9,
1592  2, 2, 1, 5, 1, 5, 10, 10, 1, 1, 11, 11, 3, 6, 3, 4,
1593  4, 6, 2, 2, 1, 12, 1, 12, 7, 13, 7, 13, 1, 1, 8, 8,
1594  2, 2, 14, 14, 16, 15, 16, 5, 5, 1, 3, 15, 1, 3, 4, 4,
1595  1, 1, 17, 17, 2, 2, 6, 6, 1, 18, 1, 18, 22, 21, 22, 21,
1596  25, 24, 25, 19, 9, 20, 9, 23, 19, 24, 20, 3, 23, 7, 3, 1,
1597  1, 7, 28, 26, 29, 5, 28, 26, 5, 8, 29, 4, 8, 27, 2, 2,
1598  4, 27, 1, 1, 10, 36, 10, 33, 33, 36, 30, 1, 32, 32, 1, 30,
1599  6, 31, 31, 35, 3, 6, 11, 11, 3, 2, 35, 2, 34, 1, 34, 1,
1600  37, 37, 12, 7, 12, 5, 41, 5, 4, 7, 1, 8, 13, 4, 1, 41,
1601  13, 38, 8, 38, 9, 1, 40, 40, 9, 1, 39, 2, 2, 49, 39, 42,
1602  3, 3, 14, 16, 49, 14, 16, 42, 43, 43, 6, 6, 15, 1, 1, 15,
1603  44, 44, 1, 1, 50, 48, 4, 5, 4, 7, 5, 2, 10, 10, 48, 7,
1604  50, 45, 2, 1, 45, 8, 8, 1, 46, 46, 3, 47, 47, 3, 1, 1},
1605 
1606  /* value table */
1607  { 1, -1, 2, -2, 0, 1, -1, 3, -3, 1, -1, 0, 4, -4, 2, -2,
1608  1, -1, 5, -5, 1, -1, 6, -6, 3, -3, 2, -2, 1, -1, 7, -7,
1609  1, -1, 1, 8, -1, 4, -4, -8, 2, -2, 9, 3, -9, -3, 1, -1,
1610  5, -5, 10, 2, -10, -2, 1, -1, 11, -11, 1, -1, -4, 2, 4, 3,
1611  -3, -2, 6, -6, 12, 1, -12, -1, 2, 1, -2, -1, 13, -13, 2, -2,
1612  7, -7, 1, -1, 1, 1, -1, 3, -3, 14, 5, -1, -14, -5, 4, -4,
1613  15, -15, 1, -1, 8, -8, -3, 3, 16, 1, -16, -1, 1, 1, -1, -1,
1614  1, 1, -1, 1, 2, 1, -2, 1, -1, -1, -1, 6, -1, 3, -6, 17,
1615  -17, -3, 1, 1, 1, 4, -1, -1, -4, 3, -1, 5, -3, -1, -9, 9,
1616  -5, 1, 18, -18, 2, 1, -2, 1, -1, -1, 1, 19, -1, 1, -19, -1,
1617  4, 1, -1, 1, 7, -4, -2, 2, -7, 10, -1, -10, 1, 20, -1, -20,
1618  1, -1, 2, 4, -2, 5, 1, -5, 6, -4, 21, 4, 2, -6, -21, -1,
1619  -2, 1, -4, -1, -3, 22, -1, 1, 3, -22, -1, 11, -11, 1, 1, 1,
1620  8, -8, 2, 2, -1, -2, -2, -1, 1, -1, -5, 5, 2, 23, -23, -2,
1621  1, -1, 24, -24, -1, -1, 7, 6, -7, 5, -6, 12, -3, 3, 1, -5,
1622  1, 1, -12, 25, -1, -5, 5, -25, -1, 1, 9, 1, -1, -9, 26, -26}
1623 }
1624 };
#define IVI_NUM_TILES(stride, tile_size)
calculate number of tiles in a stride
Definition: ivi.h:283
static unsigned int show_bits_long(GetBitContext *s, int n)
Show 0-32 bits.
Definition: get_bits.h:602
int plane
Definition: avisynth_c.h:384
int is_empty
= 1 if this band doesn&#39;t contain any data
Definition: ivi.h:157
const uint8_t ff_ivi_direct_scan_4x4[16]
Definition: ivi.c:1264
uint8_t type
macroblock type: 0 - INTRA, 1 - INTER
Definition: ivi.h:114
int num_MBs
number of macroblocks in this tile
Definition: ivi.h:135
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:863
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static const IVIHuffDesc ivi_mb_huff_desc[8]
These are 2x8 predefined Huffman codebooks for coding macroblock/block signals.
Definition: ivi.c:50
static av_always_inline void mv_scale(Mv *dst, Mv *src, int td, int tb)
Definition: hevc_mvs.c:115
This structure describes decoded (raw) audio or video data.
Definition: frame.h:268
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:100
macroblock/block huffman table descriptor
Definition: ivi.h:63
int(* is_nonnull_frame)(struct IVI45DecContext *ctx)
Definition: ivi.h:262
InvTransformPtr * inv_transform
Definition: ivi.h:177
misc image utilities
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:379
static int ivi_decode_coded_blocks(GetBitContext *gb, const IVIBandDesc *band, ivi_mc_func mc, ivi_mc_avg_func mc_avg, int mv_x, int mv_y, int mv_x2, int mv_y2, int *prev_dc, int is_intra, int mc_type, int mc_type2, uint32_t quant, int offs, AVCodecContext *avctx)
Definition: ivi.c:505
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
Definition: utils.c:104
static void skip_bits_long(GetBitContext *s, int n)
Skips the specified number of bits.
Definition: get_bits.h:291
static int ivi_huff_desc_cmp(const IVIHuffDesc *desc1, const IVIHuffDesc *desc2)
Definition: ivi.c:219
#define IVI_MBs_PER_TILE(tile_width, tile_height, mb_size)
calculate number of macroblocks in a tile
Definition: ivi.h:286
const uint8_t ff_reverse[256]
Definition: reverse.c:23
int8_t b_mv_y
second motion vector (y component)
Definition: ivi.h:120
av_cold int ff_ivi_decode_close(AVCodecContext *avctx)
Close Indeo5 decoder and clean up its context.
Definition: ivi.c:1221
#define IVI_VLC_BITS
max number of bits of the ivi&#39;s huffman codes
Definition: ivi.h:49
int num_tiles
number of tiles in this band
Definition: ivi.h:175
int dst_buf
buffer index for the currently decoded frame
Definition: ivi.h:233
int16_t * ref_buf
pointer to the reference frame buffer (for motion compensation)
Definition: ivi.h:153
int size
Definition: avcodec.h:1478
uint8_t eob_sym
end of block symbol
Definition: ivi.h:98
int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ivi.c:1075
int16_t * buf
pointer to the output buffer for this band
Definition: ivi.h:152
DSP functions (inverse transforms, motion compensations, wavelet recomposition) for Indeo Video Inter...
IVITile * tiles
array of tile descriptors
Definition: ivi.h:176
void(* ivi_mc_avg_func)(int16_t *buf, const int16_t *ref_buf1, const int16_t *ref_buf2, ptrdiff_t pitch, int mc_type, int mc_type2)
Definition: ivi.c:78
int is_halfpel
precision of the motion compensation: 0 - fullpel, 1 - halfpel
Definition: ivi.h:160
uint8_t chroma_bands
Definition: ivi.h:210
int(* decode_pic_hdr)(struct IVI45DecContext *ctx, AVCodecContext *avctx)
Definition: ivi.h:258
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
Definition: frame.c:582
int plane
plane number this band belongs to
Definition: ivi.h:145
int mb_size
Definition: ivi.h:132
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
int bufsize
band buffer size in bytes
Definition: ivi.h:183
uint8_t run
Definition: svq3.c:206
static AVPacket pkt
#define blk(i)
Definition: sha.c:185
#define src
Definition: vp8dsp.c:254
static const IVIHuffDesc ivi_blk_huff_desc[8]
static block huffman tables
Definition: ivi.c:62
uint16_t height
Definition: ivi.h:196
uint8_t has_b_frames
Definition: ivi.h:252
void(* switch_buffers)(struct IVI45DecContext *ctx)
Definition: ivi.h:261
int height
Definition: ivi.h:148
Macro definitions for various function/variable attributes.
void ff_ivi_mc_8x8_no_delta(int16_t *buf, const int16_t *ref_buf, ptrdiff_t pitch, int mc_type)
motion compensation without adding delta
RVMapDesc * rv_map
ptr to the RLE table for this band
Definition: ivi.h:174
uint8_t xbits[16]
Definition: ivi.h:57
int8_t b_mv_x
second motion vector (x component)
Definition: ivi.h:119
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:112
uint8_t uses_tiling
Definition: ivi.h:254
uint8_t luma_bands
Definition: ivi.h:209
void ff_ivi_recompose53(const IVIPlaneDesc *plane, uint8_t *dst, const ptrdiff_t dst_pitch)
5/3 wavelet recomposition filter for Indeo5
Definition: ivi_dsp.c:33
ptrdiff_t pitch
pitch associated with the buffers above
Definition: ivi.h:156
static int ivi_dec_tile_data_size(GetBitContext *gb)
Definition: ivi.c:479
VLC * tab
index of one of the predefined tables or "7" for custom one
Definition: ivi.h:66
uint8_t
#define av_cold
Definition: attributes.h:82
#define mb
const uint8_t * frame_data
input frame data pointer
Definition: ivi.h:222
const uint16_t * inter_base
quantization matrix for inter blocks
Definition: ivi.h:185
const uint8_t * data_ptr
ptr to the first byte of the band data
Definition: ivi.h:150
void ff_ivi_mc_avg_8x8_no_delta(int16_t *buf, const int16_t *ref_buf, const int16_t *ref_buf2, ptrdiff_t pitch, int mc_type, int mc_type2)
motion compensation without adding delta for B-frames
uint16_t pic_height
Definition: ivi.h:204
void ff_ivi_mc_4x4_delta(int16_t *buf, const int16_t *ref_buf, ptrdiff_t pitch, int mc_type)
4x4 block motion compensation with adding delta
int inherit_mv
tells if motion vector is inherited from reference macroblock
Definition: ivi.h:161
static int ivi_init_tiles(const IVIBandDesc *band, IVITile *ref_tile, int p, int b, int t_height, int t_width)
Definition: ivi.c:382
static int ivi_mc(const IVIBandDesc *band, ivi_mc_func mc, ivi_mc_avg_func mc_avg, int offs, int mv_x, int mv_y, int mv_x2, int mv_y2, int mc_type, int mc_type2)
Definition: ivi.c:82
int16_t * bufs[4]
array of pointers to the band buffers
Definition: ivi.h:155
GetBitContext gb
Definition: ivi.h:214
uint8_t * data
Definition: avcodec.h:1477
const uint8_t ff_ivi_vertical_scan_8x8[64]
Scan patterns shared between indeo4 and indeo5.
Definition: ivi.c:1242
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:219
uint8_t cbp
coded block pattern
Definition: ivi.h:115
int qdelta_present
tells if Qdelta signal is present in the bitstream (Indeo5 only)
Definition: ivi.h:163
#define ff_dlog(a,...)
#define IVI5_IS_PROTECTED
Definition: ivi.h:50
bitstream reader API header.
static VLC_TYPE table_data[117592][2]
Definition: rv34.c:99
bidirectional frame
Definition: ivi.h:43
uint16_t pic_width
Definition: ivi.h:203
high precision timer, useful to profile code
int gop_invalid
Definition: ivi.h:264
int(* decode_band_hdr)(struct IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Definition: ivi.h:259
#define FFALIGN(x, a)
Definition: macros.h:48
IVIPlaneDesc planes[3]
color planes
Definition: ivi.h:230
#define av_log(a,...)
const uint16_t * intra_base
quantization matrix for intra blocks
Definition: ivi.h:184
int width
Definition: ivi.h:147
static const struct @309 planes[]
int got_p_frame
Definition: ivi.h:270
IVIHuffDesc cust_desc
pointer to the table associated with tab_sel
Definition: ivi.h:69
#define U(x)
Definition: vp56_arith.h:37
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:849
int blk_size
block size
Definition: ivi.h:159
uint8_t runtab[256]
Definition: ivi.h:100
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:260
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
uint8_t corr[61 *2]
rvmap correction pairs
Definition: ivi.h:172
int32_t tab_sel
Definition: ivi.h:64
RVMapDesc rvmap_tabs[9]
local corrected copy of the static rvmap tables
Definition: ivi.h:215
#define init_vlc(vlc, nb_bits, nb_codes,bits, bits_wrap, bits_size,codes, codes_wrap, codes_size,flags)
Definition: vlc.h:38
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
int show_indeo4_info
Definition: ivi.h:251
int is_indeo4
Definition: ivi.h:267
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height)
Initialize tile and macroblock descriptors.
Definition: ivi.c:421
int ref_buf
inter frame reference buffer index
Definition: ivi.h:234
DCTransformPtr * dc_transform
Definition: ivi.h:179
This file contains structures and macros shared by both Indeo4 and Indeo5 decoders.
void ff_ivi_mc_4x4_no_delta(int16_t *buf, const int16_t *ref_buf, ptrdiff_t pitch, int mc_type)
4x4 block motion compensation without adding delta
uint8_t bits
Definition: vp3data.h:202
int64_t max_pixels
The number of pixels per image to maximally accept.
Definition: avcodec.h:3288
static int ivi_decode_blocks(GetBitContext *gb, const IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx)
Definition: ivi.c:616
int32_t num_rows
Definition: ivi.h:56
static int decode_band(IVI45DecContext *ctx, IVIBandDesc *band, AVCodecContext *avctx)
Decode an Indeo 4 or 5 band.
Definition: ivi.c:952
uint8_t esc_sym
escape symbol
Definition: ivi.h:99
static int ivi_create_huff_from_desc(const IVIHuffDesc *cb, VLC *vlc, int flag)
Definition: ivi.c:145
uint16_t width
Definition: ivi.h:195
void ff_ivi_mc_8x8_delta(int16_t *buf, const int16_t *ref_buf, ptrdiff_t pitch, int mc_type)
8x8 block motion compensation with adding delta
Definition: vlc.h:26
static int ivi_dc_transform(const IVIBandDesc *band, int *prev_dc, int buf_offs, int blk_size)
Definition: ivi.c:496
static uint16_t inv_bits(uint16_t val, int nbits)
Reverse "nbits" bits of the value "val" and return the result in the least significant bits...
Definition: ivi.c:123
run-value (RLE) table descriptor
Definition: ivi.h:97
static VLC ivi_blk_vlc_tabs[8]
static block Huffman tables
Definition: ivi.c:74
int inherit_qdelta
tells if quantiser delta is inherited from reference macroblock
Definition: ivi.h:162
AVFrame * p_frame
Definition: ivi.h:269
uint8_t num_bands
number of bands this plane subdivided into
Definition: ivi.h:197
#define b
Definition: input.c:41
const uint8_t ff_ivi_horizontal_scan_8x8[64]
Definition: ivi.c:1253
const RVMapDesc ff_ivi_rvmap_tabs[9]
Run-value (RLE) tables.
Definition: ivi.c:1272
#define FFMIN(a, b)
Definition: common.h:96
int is_scalable
Definition: ivi.h:221
#define FFSIGN(a)
Definition: common.h:73
uint8_t w
Definition: llviddspenc.c:38
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
IVIMbInfo * mbs
array of macroblock descriptors
Definition: ivi.h:136
int32_t
AVFormatContext * ctx
Definition: movenc.c:48
int16_t * b_ref_buf
pointer to the second reference frame buffer (for motion compensation)
Definition: ivi.h:154
void ff_ivi_mc_avg_8x8_delta(int16_t *buf, const int16_t *ref_buf, const int16_t *ref_buf2, ptrdiff_t pitch, int mc_type, int mc_type2)
8x8 block motion compensation with adding delta
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
const uint8_t * inter_scale
quantization coefficient for inter blocks
Definition: ivi.h:187
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
Definition: get_bits.h:797
int ff_ivi_dec_huff_desc(GetBitContext *gb, int desc_coded, int which_tab, IVIHuffTab *huff_tab, AVCodecContext *avctx)
Decode a huffman codebook descriptor from the bitstream and select specified huffman table...
Definition: ivi.c:226
static volatile int checksum
Definition: adler32.c:30
static void ivi_huff_desc_copy(IVIHuffDesc *dst, const IVIHuffDesc *src)
Definition: ivi.c:206
int8_t q_delta
quant delta
Definition: ivi.h:116
uint32_t frame_size
frame size in bytes
Definition: ivi.h:224
#define INIT_VLC_LE
Definition: vlc.h:54
if(ret)
#define mc
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
int table_allocated
Definition: vlc.h:29
static VLC ivi_mb_vlc_tabs[8]
static macroblock Huffman tables
Definition: ivi.c:73
int ypos
Definition: ivi.h:129
IVIHuffTab mb_vlc
current macroblock table descriptor
Definition: ivi.h:238
int is_2d_trans
1 indicates that the two-dimensional inverse transform is used
Definition: ivi.h:180
Libavcodec external API header.
int glob_quant
quant base for this band
Definition: ivi.h:165
enum AVCodecID codec_id
Definition: avcodec.h:1575
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:299
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:677
void ff_ivi_recompose_haar(const IVIPlaneDesc *plane, uint8_t *dst, const ptrdiff_t dst_pitch)
Haar wavelet recomposition filter for Indeo 4.
Definition: ivi_dsp.c:190
int height
Definition: ivi.h:131
av_cold int ff_ivi_init_planes(AVCodecContext *avctx, IVIPlaneDesc *planes, const IVIPicConfig *cfg, int is_indeo4)
Initialize planes (prepares descriptors, allocates buffers etc).
Definition: ivi.c:305
main external API structure.
Definition: avcodec.h:1565
int aheight
aligned band height
Definition: ivi.h:149
int is_empty
= 1 if this tile doesn&#39;t contain any data
Definition: ivi.h:133
static const float bands[]
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1964
Tag MUST be and< 10hcoeff half pel interpolation filter coefficients, hcoeff[0] are the 2 middle coefficients[1] are the next outer ones and so on, resulting in a filter like:...eff[2], hcoeff[1], hcoeff[0], hcoeff[0], hcoeff[1], hcoeff[2]...the sign of the coefficients is not explicitly stored but alternates after each coeff and coeff[0] is positive, so...,+,-,+,-,+,+,-,+,-,+,...hcoeff[0] is not explicitly stored but found by subtracting the sum of all stored coefficients with signs from 32 hcoeff[0]=32-hcoeff[1]-hcoeff[2]-...a good choice for hcoeff and htaps is htaps=6 hcoeff={40,-10, 2}an alternative which requires more computations at both encoder and decoder side and may or may not be better is htaps=8 hcoeff={42,-14, 6,-2}ref_frames minimum of the number of available reference frames and max_ref_frames for example the first frame after a key frame always has ref_frames=1spatial_decomposition_type wavelet type 0 is a 9/7 symmetric compact integer wavelet 1 is a 5/3 symmetric compact integer wavelet others are reserved stored as delta from last, last is reset to 0 if always_reset||keyframeqlog quality(logarithmic quantizer scale) stored as delta from last, last is reset to 0 if always_reset||keyframemv_scale stored as delta from last, last is reset to 0 if always_reset||keyframe FIXME check that everything works fine if this changes between framesqbias dequantization bias stored as delta from last, last is reset to 0 if always_reset||keyframeblock_max_depth maximum depth of the block tree stored as delta from last, last is reset to 0 if always_reset||keyframequant_table quantization tableHighlevel bitstream structure:==============================--------------------------------------------|Header|--------------------------------------------|------------------------------------|||Block0||||split?||||yes no||||.........intra?||||:Block01:yes no||||:Block02:.................||||:Block03::y DC::ref index:||||:Block04::cb DC::motion x:||||.........:cr DC::motion y:||||.................|||------------------------------------||------------------------------------|||Block1|||...|--------------------------------------------|------------------------------------|||Y subbands||Cb subbands||Cr subbands||||------||------||------|||||LL0||HL0||||LL0||HL0||||LL0||HL0|||||------||------||------||||------||------||------|||||LH0||HH0||||LH0||HH0||||LH0||HH0|||||------||------||------||||------||------||------|||||HL1||LH1||||HL1||LH1||||HL1||LH1|||||------||------||------||||------||------||------|||||HH1||HL2||||HH1||HL2||||HH1||HL2|||||...||...||...|||------------------------------------|--------------------------------------------Decoding process:=================------------|||Subbands|------------||||------------|Intra DC||||LL0 subband prediction------------|\Dequantization-------------------\||Reference frames|\IDWT|--------------|Motion\|||Frame 0||Frame 1||Compensation.OBMC v-------|--------------|--------------.\------> Frame n output Frame Frame<----------------------------------/|...|-------------------Range Coder:============Binary Range Coder:-------------------The implemented range coder is an adapted version based upon"Range encoding: an algorithm for removing redundancy from a digitised message."by G.N.N.Martin.The symbols encoded by the Snow range coder are bits(0|1).The associated probabilities are not fix but change depending on the symbol mix seen so far.bit seen|new state---------+-----------------------------------------------0|256-state_transition_table[256-old_state];1|state_transition_table[old_state];state_transition_table={0, 0, 0, 0, 0, 0, 0, 0, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 190, 191, 192, 194, 194, 195, 196, 197, 198, 199, 200, 201, 202, 202, 204, 205, 206, 207, 208, 209, 209, 210, 211, 212, 213, 215, 215, 216, 217, 218, 219, 220, 220, 222, 223, 224, 225, 226, 227, 227, 229, 229, 230, 231, 232, 234, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 248, 0, 0, 0, 0, 0, 0, 0};FIXME Range Coding of integers:-------------------------FIXME Neighboring Blocks:===================left and top are set to the respective blocks unless they are outside of the image in which case they are set to the Null block top-left is set to the top left block unless it is outside of the image in which case it is set to the left block if this block has no larger parent block or it is at the left side of its parent block and the top right block is not outside of the image then the top right block is used for top-right else the top-left block is used Null block y, cb, cr are 128 level, ref, mx and my are 0 Motion Vector Prediction:=========================1.the motion vectors of all the neighboring blocks are scaled to compensate for the difference of reference frames scaled_mv=(mv *(256 *(current_reference+1)/(mv.reference+1))+128)> the median of the scaled left
Definition: snow.txt:206
int8_t valtab[256]
Definition: ivi.h:101
int num_corr
number of correction entries
Definition: ivi.h:171
static int ivi_scale_mv(int mv, int mv_scale)
scale motion vector
Definition: ivi.h:293
information for Indeo tile
Definition: ivi.h:127
static int ivi_process_empty_tile(AVCodecContext *avctx, const IVIBandDesc *band, IVITile *tile, int32_t mv_scale)
Handle empty tiles by performing data copying and motion compensation respectively.
Definition: ivi.c:768
void * buf
Definition: avisynth_c.h:766
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:498
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
uint8_t gop_flags
Definition: ivi.h:248
uint8_t uses_haar
Definition: ivi.h:255
IVIBandDesc * bands
array of band descriptors
Definition: ivi.h:198
int32_t checksum
for debug purposes
Definition: ivi.h:181
int rvmap_sel
rvmap table selector
Definition: ivi.h:173
int8_t mv_x
motion vector (x component)
Definition: ivi.h:117
int8_t mv_y
motion vector (y component)
Definition: ivi.h:118
#define IVI_TOSIGNED(val)
convert unsigned values into signed ones (the sign is in the LSB)
Definition: ivi.h:290
int mb_size
macroblock size
Definition: ivi.h:158
static av_cold void ivi_free_buffers(IVIPlaneDesc *planes)
Definition: ivi.c:282
huffman codebook descriptor
Definition: ivi.h:55
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:546
IVIMbInfo * ref_mbs
ptr to the macroblock descriptors of the reference tile
Definition: ivi.h:137
int xpos
Definition: ivi.h:128
const uint8_t * quant
static void ivi_output_plane(IVIPlaneDesc *plane, uint8_t *dst, ptrdiff_t dst_pitch)
Definition: ivi.c:919
void avpriv_report_missing_feature(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
void(* ivi_mc_func)(int16_t *buf, const int16_t *ref_buf, ptrdiff_t pitch, int mc_type)
Definition: ivi.c:76
IVIHuffTab blk_vlc
current block table descriptor
Definition: ivi.h:239
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:282
int16_t xpos
Definition: ivi.h:111
int band_num
band number
Definition: ivi.h:146
common internal api header.
int buf_invalid[4]
Definition: ivi.h:265
int transform_size
Definition: ivi.h:178
void ff_ivi_mc_avg_4x4_delta(int16_t *buf, const int16_t *ref_buf, const int16_t *ref_buf2, ptrdiff_t pitch, int mc_type, int mc_type2)
4x4 block motion compensation with adding delta
#define flag(name)
Definition: cbs_av1.c:553
#define INIT_VLC_USE_NEW_STATIC
Definition: vlc.h:55
VLC cust_tab
custom Huffman codebook descriptor
Definition: ivi.h:70
int av_image_check_size2(unsigned int w, unsigned int h, int64_t max_pixels, enum AVPixelFormat pix_fmt, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of a plane of an image with...
Definition: imgutils.c:253
const uint8_t * scan
ptr to the scan pattern
Definition: ivi.h:166
void * priv_data
Definition: avcodec.h:1592
empty frame with no data
Definition: ivi.h:46
int width
Definition: ivi.h:130
int len
int checksum_present
Definition: ivi.h:182
uint8_t has_transp
transparency mode status: 1 - enabled
Definition: ivi.h:253
VLC_TYPE(* table)[2]
code, bits
Definition: vlc.h:28
static const uint8_t * align_get_bits(GetBitContext *s)
Definition: get_bits.h:693
void ff_ivi_mc_avg_4x4_no_delta(int16_t *buf, const int16_t *ref_buf, const int16_t *ref_buf2, ptrdiff_t pitch, int mc_type, int mc_type2)
4x4 block motion compensation without adding delta for B-frames
int(* decode_mb_info)(struct IVI45DecContext *ctx, IVIBandDesc *band, IVITile *tile, AVCodecContext *avctx)
Definition: ivi.h:260
int16_t ypos
Definition: ivi.h:112
and forward the result(frame or status change) to the corresponding input.If nothing is possible
information for Indeo macroblock (16x16, 8x8 or 4x4)
Definition: ivi.h:110
IVIHuffTab blk_vlc
vlc table for decoding block data
Definition: ivi.h:169
#define av_freep(p)
av_cold void ff_ivi_init_static_vlc(void)
Initialize static codes used for macroblock and block decoding.
Definition: ivi.c:179
const uint8_t * intra_scale
quantization coefficient for intra blocks
Definition: ivi.h:186
color plane (luma or chroma) information
Definition: ivi.h:194
#define VLC_TYPE
Definition: vlc.h:24
uint8_t uses_fullpel
Definition: ivi.h:256
#define FFSWAP(type, a, b)
Definition: common.h:99
uint32_t buf_offs
address in the output buffer for this mb
Definition: ivi.h:113
BYTE int dst_pitch
Definition: avisynth_c.h:908
int b_ref_buf
second reference frame buffer index
Definition: ivi.h:236
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
information for Indeo wavelet band
Definition: ivi.h:144
This structure stores compressed data.
Definition: avcodec.h:1454
void ff_free_vlc(VLC *vlc)
Definition: bitstream.c:359
int frame_type
Definition: ivi.h:218
void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.c:191
int data_size
size of the data in bytes
Definition: ivi.h:134