FFmpeg  3.4.9
iff.c
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1 /*
2  * Copyright (c) 2008 Jaikrishnan Menon <realityman@gmx.net>
3  * Copyright (c) 2010 Peter Ross <pross@xvid.org>
4  * Copyright (c) 2010 Sebastian Vater <cdgs.basty@googlemail.com>
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  * IFF file demuxer
26  * by Jaikrishnan Menon
27  * for more information on the .iff file format, visit:
28  * http://wiki.multimedia.cx/index.php?title=IFF
29  */
30 
31 #include <inttypes.h>
32 
33 #include "libavutil/avassert.h"
35 #include "libavutil/intreadwrite.h"
36 #include "libavutil/dict.h"
37 #include "libavcodec/bytestream.h"
38 #include "avformat.h"
39 #include "id3v2.h"
40 #include "internal.h"
41 
42 #define ID_8SVX MKTAG('8','S','V','X')
43 #define ID_16SV MKTAG('1','6','S','V')
44 #define ID_MAUD MKTAG('M','A','U','D')
45 #define ID_MHDR MKTAG('M','H','D','R')
46 #define ID_MDAT MKTAG('M','D','A','T')
47 #define ID_VHDR MKTAG('V','H','D','R')
48 #define ID_ATAK MKTAG('A','T','A','K')
49 #define ID_RLSE MKTAG('R','L','S','E')
50 #define ID_CHAN MKTAG('C','H','A','N')
51 #define ID_PBM MKTAG('P','B','M',' ')
52 #define ID_ILBM MKTAG('I','L','B','M')
53 #define ID_BMHD MKTAG('B','M','H','D')
54 #define ID_DGBL MKTAG('D','G','B','L')
55 #define ID_CAMG MKTAG('C','A','M','G')
56 #define ID_CMAP MKTAG('C','M','A','P')
57 #define ID_ACBM MKTAG('A','C','B','M')
58 #define ID_DEEP MKTAG('D','E','E','P')
59 #define ID_RGB8 MKTAG('R','G','B','8')
60 #define ID_RGBN MKTAG('R','G','B','N')
61 #define ID_DSD MKTAG('D','S','D',' ')
62 #define ID_DST MKTAG('D','S','T',' ')
63 #define ID_DSTC MKTAG('D','S','T','C')
64 #define ID_DSTF MKTAG('D','S','T','F')
65 #define ID_FRTE MKTAG('F','R','T','E')
66 #define ID_ANIM MKTAG('A','N','I','M')
67 #define ID_ANHD MKTAG('A','N','H','D')
68 #define ID_DLTA MKTAG('D','L','T','A')
69 #define ID_DPAN MKTAG('D','P','A','N')
70 
71 #define ID_FORM MKTAG('F','O','R','M')
72 #define ID_FRM8 MKTAG('F','R','M','8')
73 #define ID_ANNO MKTAG('A','N','N','O')
74 #define ID_AUTH MKTAG('A','U','T','H')
75 #define ID_CHRS MKTAG('C','H','R','S')
76 #define ID_COPYRIGHT MKTAG('(','c',')',' ')
77 #define ID_CSET MKTAG('C','S','E','T')
78 #define ID_FVER MKTAG('F','V','E','R')
79 #define ID_NAME MKTAG('N','A','M','E')
80 #define ID_TEXT MKTAG('T','E','X','T')
81 #define ID_ABIT MKTAG('A','B','I','T')
82 #define ID_BODY MKTAG('B','O','D','Y')
83 #define ID_DBOD MKTAG('D','B','O','D')
84 #define ID_DPEL MKTAG('D','P','E','L')
85 #define ID_DLOC MKTAG('D','L','O','C')
86 #define ID_TVDC MKTAG('T','V','D','C')
87 
88 #define LEFT 2
89 #define RIGHT 4
90 #define STEREO 6
91 
92 /**
93  * This number of bytes if added at the beginning of each AVPacket
94  * which contain additional information about video properties
95  * which has to be shared between demuxer and decoder.
96  * This number may change between frames, e.g. the demuxer might
97  * set it to smallest possible size of 2 to indicate that there's
98  * no extradata changing in this frame.
99  */
100 #define IFF_EXTRA_VIDEO_SIZE 41
101 
102 typedef enum {
107 
108 typedef struct IffDemuxContext {
109  int is_64bit; ///< chunk size is 64-bit
110  int64_t body_pos;
111  int64_t body_end;
112  uint32_t body_size;
114  unsigned maud_bits;
116  unsigned bitmap_compression; ///< delta compression method used
117  unsigned bpp; ///< bits per plane to decode (differs from bits_per_coded_sample if HAM)
118  unsigned ham; ///< 0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise)
119  unsigned flags; ///< 1 for EHB, 0 is no extra half darkening
120  unsigned transparency; ///< transparency color index in palette
121  unsigned masking; ///< masking method used
122  uint8_t tvdc[32]; ///< TVDC lookup table
123  int64_t pts;
125 
126 /* Metadata string read */
128  const char *const tag,
129  const unsigned data_size)
130 {
131  uint8_t *buf = ((data_size + 1) == 0) ? NULL : av_malloc(data_size + 1);
132 
133  if (!buf)
134  return AVERROR(ENOMEM);
135 
136  if (avio_read(s->pb, buf, data_size) != data_size) {
137  av_free(buf);
138  return AVERROR(EIO);
139  }
140  buf[data_size] = 0;
142  return 0;
143 }
144 
145 static int iff_probe(AVProbeData *p)
146 {
147  const uint8_t *d = p->buf;
148 
149  if ( (AV_RL32(d) == ID_FORM &&
150  (AV_RL32(d+8) == ID_8SVX ||
151  AV_RL32(d+8) == ID_16SV ||
152  AV_RL32(d+8) == ID_MAUD ||
153  AV_RL32(d+8) == ID_PBM ||
154  AV_RL32(d+8) == ID_ACBM ||
155  AV_RL32(d+8) == ID_DEEP ||
156  AV_RL32(d+8) == ID_ILBM ||
157  AV_RL32(d+8) == ID_RGB8 ||
158  AV_RL32(d+8) == ID_ANIM ||
159  AV_RL32(d+8) == ID_RGBN)) ||
160  (AV_RL32(d) == ID_FRM8 && AV_RL32(d+12) == ID_DSD))
161  return AVPROBE_SCORE_MAX;
162  return 0;
163 }
164 
165 static const AVCodecTag dsd_codec_tags[] = {
167  { AV_CODEC_ID_DST, ID_DST },
168  { AV_CODEC_ID_NONE, 0 },
169 };
170 
171 
172 #define DSD_SLFT MKTAG('S','L','F','T')
173 #define DSD_SRGT MKTAG('S','R','G','T')
174 #define DSD_MLFT MKTAG('M','L','F','T')
175 #define DSD_MRGT MKTAG('M','R','G','T')
176 #define DSD_C MKTAG('C',' ',' ',' ')
177 #define DSD_LS MKTAG('L','S',' ',' ')
178 #define DSD_RS MKTAG('R','S',' ',' ')
179 #define DSD_LFE MKTAG('L','F','E',' ')
180 
181 static const uint32_t dsd_stereo[] = { DSD_SLFT, DSD_SRGT };
182 static const uint32_t dsd_5point0[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LS, DSD_RS };
183 static const uint32_t dsd_5point1[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LFE, DSD_LS, DSD_RS };
184 
185 typedef struct {
186  uint64_t layout;
187  const uint32_t * dsd_layout;
188 } DSDLayoutDesc;
189 
194 };
195 
196 static const uint64_t dsd_loudspeaker_config[] = {
198  0, 0,
200 };
201 
202 static const char * dsd_source_comment[] = {
203  "dsd_source_comment",
204  "analogue_source_comment",
205  "pcm_source_comment",
206 };
207 
208 static const char * dsd_history_comment[] = {
209  "general_remark",
210  "operator_name",
211  "creating_machine",
212  "timezone",
213  "file_revision"
214 };
215 
216 static int parse_dsd_diin(AVFormatContext *s, AVStream *st, uint64_t eof)
217 {
218  AVIOContext *pb = s->pb;
219 
220  while (avio_tell(pb) + 12 <= eof && !avio_feof(pb)) {
221  uint32_t tag = avio_rl32(pb);
222  uint64_t size = avio_rb64(pb);
223  uint64_t orig_pos = avio_tell(pb);
224  const char * metadata_tag = NULL;
225 
226  if (size >= INT64_MAX)
227  return AVERROR_INVALIDDATA;
228 
229  switch(tag) {
230  case MKTAG('D','I','A','R'): metadata_tag = "artist"; break;
231  case MKTAG('D','I','T','I'): metadata_tag = "title"; break;
232  }
233 
234  if (metadata_tag && size > 4) {
235  unsigned int tag_size = avio_rb32(pb);
236  int ret = get_metadata(s, metadata_tag, FFMIN(tag_size, size - 4));
237  if (ret < 0) {
238  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
239  return ret;
240  }
241  }
242 
243  avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
244  }
245 
246  return 0;
247 }
248 
249 static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
250 {
251  AVIOContext *pb = s->pb;
252  char abss[24];
253  int hour, min, sec, i, ret, config;
254  int dsd_layout[6];
255  ID3v2ExtraMeta *id3v2_extra_meta;
256 
257  while (avio_tell(pb) + 12 <= eof && !avio_feof(pb)) {
258  uint32_t tag = avio_rl32(pb);
259  uint64_t size = avio_rb64(pb);
260  uint64_t orig_pos = avio_tell(pb);
261 
262  if (size >= INT64_MAX)
263  return AVERROR_INVALIDDATA;
264 
265  switch(tag) {
266  case MKTAG('A','B','S','S'):
267  if (size < 8)
268  return AVERROR_INVALIDDATA;
269  hour = avio_rb16(pb);
270  min = avio_r8(pb);
271  sec = avio_r8(pb);
272  snprintf(abss, sizeof(abss), "%02dh:%02dm:%02ds:%d", hour, min, sec, avio_rb32(pb));
273  av_dict_set(&st->metadata, "absolute_start_time", abss, 0);
274  break;
275 
276  case MKTAG('C','H','N','L'):
277  if (size < 2)
278  return AVERROR_INVALIDDATA;
279  st->codecpar->channels = avio_rb16(pb);
280  if (size < 2 + st->codecpar->channels * 4)
281  return AVERROR_INVALIDDATA;
282  st->codecpar->channel_layout = 0;
283  if (st->codecpar->channels > FF_ARRAY_ELEMS(dsd_layout)) {
284  avpriv_request_sample(s, "channel layout");
285  break;
286  }
287  for (i = 0; i < st->codecpar->channels; i++)
288  dsd_layout[i] = avio_rl32(pb);
289  for (i = 0; i < FF_ARRAY_ELEMS(dsd_channel_layout); i++) {
290  const DSDLayoutDesc * d = &dsd_channel_layout[i];
292  !memcmp(d->dsd_layout, dsd_layout, st->codecpar->channels * sizeof(uint32_t))) {
293  st->codecpar->channel_layout = d->layout;
294  break;
295  }
296  }
297  break;
298 
299  case MKTAG('C','M','P','R'):
300  if (size < 4)
301  return AVERROR_INVALIDDATA;
302  st->codecpar->codec_tag = tag = avio_rl32(pb);
303  st->codecpar->codec_id = ff_codec_get_id(dsd_codec_tags, tag);
304  if (!st->codecpar->codec_id) {
305  av_log(s, AV_LOG_ERROR, "'%s' compression is not supported\n",
306  av_fourcc2str(tag));
307  return AVERROR_PATCHWELCOME;
308  }
309  break;
310 
311  case MKTAG('F','S',' ',' '):
312  if (size < 4)
313  return AVERROR_INVALIDDATA;
314  st->codecpar->sample_rate = avio_rb32(pb) / 8;
315  break;
316 
317  case MKTAG('I','D','3',' '):
318  id3v2_extra_meta = NULL;
319  ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, size);
320  if (id3v2_extra_meta) {
321  if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0 ||
322  (ret = ff_id3v2_parse_chapters(s, &id3v2_extra_meta)) < 0) {
323  ff_id3v2_free_extra_meta(&id3v2_extra_meta);
324  return ret;
325  }
326  ff_id3v2_free_extra_meta(&id3v2_extra_meta);
327  }
328 
329  if (size < avio_tell(pb) - orig_pos) {
330  av_log(s, AV_LOG_ERROR, "id3 exceeds chunk size\n");
331  return AVERROR_INVALIDDATA;
332  }
333  break;
334 
335  case MKTAG('L','S','C','O'):
336  if (size < 2)
337  return AVERROR_INVALIDDATA;
338  config = avio_rb16(pb);
339  if (config != 0xFFFF) {
342  if (!st->codecpar->channel_layout)
343  avpriv_request_sample(s, "loudspeaker configuration %d", config);
344  }
345  break;
346  }
347 
348  avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
349  }
350 
351  return 0;
352 }
353 
355 {
356  IffDemuxContext *iff = s->priv_data;
357  AVIOContext *pb = s->pb;
358  uint32_t chunk_id;
359  uint64_t chunk_pos, data_pos, data_size;
360  int ret = AVERROR_EOF;
361 
362  while (!avio_feof(pb)) {
363  chunk_pos = avio_tell(pb);
364  if (chunk_pos >= iff->body_end)
365  return AVERROR_EOF;
366 
367  chunk_id = avio_rl32(pb);
368  data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
369  data_pos = avio_tell(pb);
370 
371  if (data_size < 1 || data_size >= INT64_MAX)
372  return AVERROR_INVALIDDATA;
373 
374  switch (chunk_id) {
375  case ID_DSTF:
376  if (!pkt) {
377  iff->body_pos = avio_tell(pb) - (iff->is_64bit ? 12 : 8);
378  iff->body_size = iff->body_end - iff->body_pos;
379  return 0;
380  }
381  ret = av_get_packet(pb, pkt, data_size);
382  if (ret < 0)
383  return ret;
384  if (data_size & 1)
385  avio_skip(pb, 1);
386  pkt->flags |= AV_PKT_FLAG_KEY;
387  pkt->stream_index = 0;
388  pkt->duration = 588LL * s->streams[0]->codecpar->sample_rate / 44100;
389  pkt->pos = chunk_pos;
390 
391  chunk_pos = avio_tell(pb);
392  if (chunk_pos >= iff->body_end)
393  return 0;
394 
395  avio_seek(pb, chunk_pos, SEEK_SET);
396  return 0;
397 
398  case ID_FRTE:
399  if (data_size < 4)
400  return AVERROR_INVALIDDATA;
401  s->streams[0]->duration = avio_rb32(pb) * 588LL * s->streams[0]->codecpar->sample_rate / 44100;
402  break;
403  }
404 
405  avio_skip(pb, data_size - (avio_tell(pb) - data_pos) + (data_size & 1));
406  }
407 
408  return ret;
409 }
410 
411 static const uint8_t deep_rgb24[] = {0, 0, 0, 3, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
412 static const uint8_t deep_rgba[] = {0, 0, 0, 4, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
413 static const uint8_t deep_bgra[] = {0, 0, 0, 4, 0, 3, 0, 8, 0, 2, 0, 8, 0, 1, 0, 8};
414 static const uint8_t deep_argb[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 1, 0, 8, 0, 2, 0, 8};
415 static const uint8_t deep_abgr[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 3, 0, 8, 0, 2, 0, 8};
416 
418 {
419  IffDemuxContext *iff = s->priv_data;
420  AVIOContext *pb = s->pb;
421  AVStream *st;
422  uint8_t *buf;
423  uint32_t chunk_id;
424  uint64_t data_size;
425  uint32_t screenmode = 0, num, den;
426  unsigned transparency = 0;
427  unsigned masking = 0; // no mask
428  uint8_t fmt[16];
429  int fmt_size;
430 
431  st = avformat_new_stream(s, NULL);
432  if (!st)
433  return AVERROR(ENOMEM);
434 
435  st->codecpar->channels = 1;
437  iff->is_64bit = avio_rl32(pb) == ID_FRM8;
438  avio_skip(pb, iff->is_64bit ? 8 : 4);
439  // codec_tag used by ByteRun1 decoder to distinguish progressive (PBM) and interlaced (ILBM) content
440  st->codecpar->codec_tag = avio_rl32(pb);
441  if (st->codecpar->codec_tag == ID_ANIM) {
442  avio_skip(pb, 12);
443  }
444  iff->bitmap_compression = -1;
445  iff->svx8_compression = -1;
446  iff->maud_bits = -1;
447  iff->maud_compression = -1;
448 
449  while(!avio_feof(pb)) {
450  uint64_t orig_pos;
451  int res;
452  const char *metadata_tag = NULL;
453  int version, nb_comments, i;
454  chunk_id = avio_rl32(pb);
455  data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
456  orig_pos = avio_tell(pb);
457 
458  if (data_size >= INT64_MAX)
459  return AVERROR_INVALIDDATA;
460 
461  switch(chunk_id) {
462  case ID_VHDR:
464 
465  if (data_size < 14)
466  return AVERROR_INVALIDDATA;
467  avio_skip(pb, 12);
468  st->codecpar->sample_rate = avio_rb16(pb);
469  if (data_size >= 16) {
470  avio_skip(pb, 1);
471  iff->svx8_compression = avio_r8(pb);
472  }
473  break;
474 
475  case ID_MHDR:
477 
478  if (data_size < 32)
479  return AVERROR_INVALIDDATA;
480  avio_skip(pb, 4);
481  iff->maud_bits = avio_rb16(pb);
482  avio_skip(pb, 2);
483  num = avio_rb32(pb);
484  den = avio_rb16(pb);
485  if (!den)
486  return AVERROR_INVALIDDATA;
487  avio_skip(pb, 2);
488  st->codecpar->sample_rate = num / den;
489  st->codecpar->channels = avio_rb16(pb);
490  iff->maud_compression = avio_rb16(pb);
491  if (st->codecpar->channels == 1)
493  else if (st->codecpar->channels == 2)
495  break;
496 
497  case ID_ABIT:
498  case ID_BODY:
499  case ID_DBOD:
500  case ID_DSD:
501  case ID_DST:
502  case ID_MDAT:
503  iff->body_pos = avio_tell(pb);
504  iff->body_end = iff->body_pos + data_size;
505  iff->body_size = data_size;
506  if (chunk_id == ID_DST) {
507  int ret = read_dst_frame(s, NULL);
508  if (ret < 0)
509  return ret;
510  }
511  break;
512 
513  case ID_CHAN:
514  if (data_size < 4)
515  return AVERROR_INVALIDDATA;
516  if (avio_rb32(pb) < 6) {
517  st->codecpar->channels = 1;
519  } else {
520  st->codecpar->channels = 2;
522  }
523  break;
524 
525  case ID_CAMG:
526  if (data_size < 4)
527  return AVERROR_INVALIDDATA;
528  screenmode = avio_rb32(pb);
529  break;
530 
531  case ID_CMAP:
532  if (data_size < 3 || data_size > 768 || data_size % 3) {
533  av_log(s, AV_LOG_ERROR, "Invalid CMAP chunk size %"PRIu64"\n",
534  data_size);
535  return AVERROR_INVALIDDATA;
536  }
537  st->codecpar->extradata_size = data_size + IFF_EXTRA_VIDEO_SIZE;
538  st->codecpar->extradata = av_malloc(data_size + IFF_EXTRA_VIDEO_SIZE + AV_INPUT_BUFFER_PADDING_SIZE);
539  if (!st->codecpar->extradata)
540  return AVERROR(ENOMEM);
541  if (avio_read(pb, st->codecpar->extradata + IFF_EXTRA_VIDEO_SIZE, data_size) < 0)
542  return AVERROR(EIO);
543  break;
544 
545  case ID_BMHD:
547  if (data_size <= 8)
548  return AVERROR_INVALIDDATA;
549  st->codecpar->width = avio_rb16(pb);
550  st->codecpar->height = avio_rb16(pb);
551  avio_skip(pb, 4); // x, y offset
553  if (data_size >= 10)
554  masking = avio_r8(pb);
555  if (data_size >= 11)
556  iff->bitmap_compression = avio_r8(pb);
557  if (data_size >= 14) {
558  avio_skip(pb, 1); // padding
559  transparency = avio_rb16(pb);
560  }
561  if (data_size >= 16) {
562  st->sample_aspect_ratio.num = avio_r8(pb);
563  st->sample_aspect_ratio.den = avio_r8(pb);
564  }
565  break;
566 
567  case ID_ANHD:
568  break;
569 
570  case ID_DPAN:
571  avio_skip(pb, 2);
572  st->duration = avio_rb16(pb);
573  break;
574 
575  case ID_DPEL:
576  if (data_size < 4 || (data_size & 3))
577  return AVERROR_INVALIDDATA;
578  if ((fmt_size = avio_read(pb, fmt, sizeof(fmt))) < 0)
579  return fmt_size;
580  if (fmt_size == sizeof(deep_rgb24) && !memcmp(fmt, deep_rgb24, sizeof(deep_rgb24)))
582  else if (fmt_size == sizeof(deep_rgba) && !memcmp(fmt, deep_rgba, sizeof(deep_rgba)))
584  else if (fmt_size == sizeof(deep_bgra) && !memcmp(fmt, deep_bgra, sizeof(deep_bgra)))
586  else if (fmt_size == sizeof(deep_argb) && !memcmp(fmt, deep_argb, sizeof(deep_argb)))
588  else if (fmt_size == sizeof(deep_abgr) && !memcmp(fmt, deep_abgr, sizeof(deep_abgr)))
590  else {
591  avpriv_request_sample(s, "color format %.16s", fmt);
592  return AVERROR_PATCHWELCOME;
593  }
594  break;
595 
596  case ID_DGBL:
598  if (data_size < 8)
599  return AVERROR_INVALIDDATA;
600  st->codecpar->width = avio_rb16(pb);
601  st->codecpar->height = avio_rb16(pb);
602  iff->bitmap_compression = avio_rb16(pb);
603  st->sample_aspect_ratio.num = avio_r8(pb);
604  st->sample_aspect_ratio.den = avio_r8(pb);
606  break;
607 
608  case ID_DLOC:
609  if (data_size < 4)
610  return AVERROR_INVALIDDATA;
611  st->codecpar->width = avio_rb16(pb);
612  st->codecpar->height = avio_rb16(pb);
613  break;
614 
615  case ID_TVDC:
616  if (data_size < sizeof(iff->tvdc))
617  return AVERROR_INVALIDDATA;
618  res = avio_read(pb, iff->tvdc, sizeof(iff->tvdc));
619  if (res < 0)
620  return res;
621  break;
622 
623  case ID_ANNO:
624  case ID_TEXT: metadata_tag = "comment"; break;
625  case ID_AUTH: metadata_tag = "artist"; break;
626  case ID_COPYRIGHT: metadata_tag = "copyright"; break;
627  case ID_NAME: metadata_tag = "title"; break;
628 
629  /* DSD tags */
630 
631  case MKTAG('F','V','E','R'):
632  if (data_size < 4)
633  return AVERROR_INVALIDDATA;
634  version = avio_rb32(pb);
635  av_log(s, AV_LOG_DEBUG, "DSIFF v%d.%d.%d.%d\n",version >> 24, (version >> 16) & 0xFF, (version >> 8) & 0xFF, version & 0xFF);
637  break;
638 
639  case MKTAG('D','I','I','N'):
640  res = parse_dsd_diin(s, st, orig_pos + data_size);
641  if (res < 0)
642  return res;
643  break;
644 
645  case MKTAG('P','R','O','P'):
646  if (data_size < 4)
647  return AVERROR_INVALIDDATA;
648  if (avio_rl32(pb) != MKTAG('S','N','D',' ')) {
649  avpriv_request_sample(s, "unknown property type");
650  break;
651  }
652  res = parse_dsd_prop(s, st, orig_pos + data_size);
653  if (res < 0)
654  return res;
655  break;
656 
657  case MKTAG('C','O','M','T'):
658  if (data_size < 2)
659  return AVERROR_INVALIDDATA;
660  nb_comments = avio_rb16(pb);
661  for (i = 0; i < nb_comments; i++) {
662  int year, mon, day, hour, min, type, ref;
663  char tmp[24];
664  const char *tag;
665  int metadata_size;
666 
667  year = avio_rb16(pb);
668  mon = avio_r8(pb);
669  day = avio_r8(pb);
670  hour = avio_r8(pb);
671  min = avio_r8(pb);
672  snprintf(tmp, sizeof(tmp), "%04d-%02d-%02d %02d:%02d", year, mon, day, hour, min);
673  av_dict_set(&st->metadata, "comment_time", tmp, 0);
674 
675  type = avio_rb16(pb);
676  ref = avio_rb16(pb);
677  switch (type) {
678  case 1:
679  if (!i)
680  tag = "channel_comment";
681  else {
682  snprintf(tmp, sizeof(tmp), "channel%d_comment", ref);
683  tag = tmp;
684  }
685  break;
686  case 2:
687  tag = ref < FF_ARRAY_ELEMS(dsd_source_comment) ? dsd_source_comment[ref] : "source_comment";
688  break;
689  case 3:
690  tag = ref < FF_ARRAY_ELEMS(dsd_history_comment) ? dsd_history_comment[ref] : "file_history";
691  break;
692  default:
693  tag = "comment";
694  }
695 
696  metadata_size = avio_rb32(pb);
697  if ((res = get_metadata(s, tag, metadata_size)) < 0) {
698  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", tag);
699  return res;
700  }
701 
702  if (metadata_size & 1)
703  avio_skip(pb, 1);
704  }
705  break;
706  }
707 
708  if (metadata_tag) {
709  if ((res = get_metadata(s, metadata_tag, data_size)) < 0) {
710  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
711  return res;
712  }
713  }
714  avio_skip(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1));
715  }
716 
717  if (st->codecpar->codec_tag == ID_ANIM)
718  avio_seek(pb, 12, SEEK_SET);
719  else
720  avio_seek(pb, iff->body_pos, SEEK_SET);
721 
722  switch(st->codecpar->codec_type) {
723  case AVMEDIA_TYPE_AUDIO:
724  avpriv_set_pts_info(st, 32, 1, st->codecpar->sample_rate);
725 
726  if (st->codecpar->codec_tag == ID_16SV)
728  else if (st->codecpar->codec_tag == ID_MAUD) {
729  if (iff->maud_bits == 8 && !iff->maud_compression) {
731  } else if (iff->maud_bits == 16 && !iff->maud_compression) {
733  } else if (iff->maud_bits == 8 && iff->maud_compression == 2) {
735  } else if (iff->maud_bits == 8 && iff->maud_compression == 3) {
737  } else {
738  avpriv_request_sample(s, "compression %d and bit depth %d", iff->maud_compression, iff->maud_bits);
739  return AVERROR_PATCHWELCOME;
740  }
741  } else if (st->codecpar->codec_tag != ID_DSD &&
742  st->codecpar->codec_tag != ID_DST) {
743  switch (iff->svx8_compression) {
744  case COMP_NONE:
746  break;
747  case COMP_FIB:
749  break;
750  case COMP_EXP:
752  break;
753  default:
754  av_log(s, AV_LOG_ERROR,
755  "Unknown SVX8 compression method '%d'\n", iff->svx8_compression);
756  return -1;
757  }
758  }
759 
763  if ((st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) && st->codecpar->block_align <= 0)
764  return AVERROR_INVALIDDATA;
765  break;
766 
767  case AVMEDIA_TYPE_VIDEO:
768  iff->bpp = st->codecpar->bits_per_coded_sample;
769  if (st->codecpar->codec_tag == ID_ANIM)
770  avpriv_set_pts_info(st, 32, 1, 60);
771  if ((screenmode & 0x800 /* Hold And Modify */) && iff->bpp <= 8) {
772  iff->ham = iff->bpp > 6 ? 6 : 4;
774  }
775  iff->flags = (screenmode & 0x80 /* Extra HalfBrite */) && iff->bpp <= 8;
776  iff->masking = masking;
777  iff->transparency = transparency;
778 
779  if (!st->codecpar->extradata) {
782  if (!st->codecpar->extradata)
783  return AVERROR(ENOMEM);
784  }
786  buf = st->codecpar->extradata;
787  bytestream_put_be16(&buf, IFF_EXTRA_VIDEO_SIZE);
788  bytestream_put_byte(&buf, iff->bitmap_compression);
789  bytestream_put_byte(&buf, iff->bpp);
790  bytestream_put_byte(&buf, iff->ham);
791  bytestream_put_byte(&buf, iff->flags);
792  bytestream_put_be16(&buf, iff->transparency);
793  bytestream_put_byte(&buf, iff->masking);
794  bytestream_put_buffer(&buf, iff->tvdc, sizeof(iff->tvdc));
796  break;
797  default:
798  return -1;
799  }
800 
801  return 0;
802 }
803 
804 static unsigned get_anim_duration(uint8_t *buf, int size)
805 {
806  GetByteContext gb;
807 
808  bytestream2_init(&gb, buf, size);
809  bytestream2_skip(&gb, 4);
810  while (bytestream2_get_bytes_left(&gb) > 8) {
811  unsigned chunk = bytestream2_get_le32(&gb);
812  unsigned size = bytestream2_get_be32(&gb);
813 
814  if (chunk == ID_ANHD) {
815  if (size < 40)
816  break;
817  bytestream2_skip(&gb, 14);
818  return bytestream2_get_be32(&gb);
819  } else {
820  bytestream2_skip(&gb, size + size & 1);
821  }
822  }
823  return 10;
824 }
825 
827  AVPacket *pkt)
828 {
829  IffDemuxContext *iff = s->priv_data;
830  AVIOContext *pb = s->pb;
831  AVStream *st = s->streams[0];
832  int ret;
833  int64_t pos = avio_tell(pb);
834 
835  if (avio_feof(pb))
836  return AVERROR_EOF;
837  if (st->codecpar->codec_tag != ID_ANIM && pos >= iff->body_end)
838  return AVERROR_EOF;
839 
840  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
841  if (st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) {
842  ret = av_get_packet(pb, pkt, FFMIN(iff->body_end - pos, 1024 * st->codecpar->block_align));
843  } else if (st->codecpar->codec_tag == ID_DST) {
844  return read_dst_frame(s, pkt);
845  } else {
846  if (iff->body_size > INT_MAX || !iff->body_size)
847  return AVERROR_INVALIDDATA;
848  ret = av_get_packet(pb, pkt, iff->body_size);
849  }
850  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
851  st->codecpar->codec_tag == ID_ANIM) {
852  uint64_t data_size, orig_pos;
853  uint32_t chunk_id, chunk_id2;
854 
855  while (!avio_feof(pb)) {
856  if (avio_feof(pb))
857  return AVERROR_EOF;
858 
859  orig_pos = avio_tell(pb);
860  chunk_id = avio_rl32(pb);
861  data_size = avio_rb32(pb);
862  chunk_id2 = avio_rl32(pb);
863 
864  if (chunk_id == ID_FORM &&
865  chunk_id2 == ID_ILBM) {
866  avio_skip(pb, -4);
867  break;
868  } else if (chunk_id == ID_FORM &&
869  chunk_id2 == ID_ANIM) {
870  continue;
871  } else {
872  avio_skip(pb, data_size);
873  }
874  }
875  ret = av_get_packet(pb, pkt, data_size);
876  pkt->pos = orig_pos;
877  pkt->duration = get_anim_duration(pkt->data, pkt->size);
878  if (pos == 12)
879  pkt->flags |= AV_PKT_FLAG_KEY;
880  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
881  st->codecpar->codec_tag != ID_ANIM) {
882  if (iff->body_size > INT_MAX || !iff->body_size)
883  return AVERROR_INVALIDDATA;
884  ret = av_get_packet(pb, pkt, iff->body_size);
885  pkt->pos = pos;
886  if (pos == iff->body_pos)
887  pkt->flags |= AV_PKT_FLAG_KEY;
888  } else {
889  av_assert0(0);
890  }
891 
892  if (ret < 0)
893  return ret;
894  pkt->stream_index = 0;
895  return ret;
896 }
897 
899  .name = "iff",
900  .long_name = NULL_IF_CONFIG_SMALL("IFF (Interchange File Format)"),
901  .priv_data_size = sizeof(IffDemuxContext),
906 };
static const uint8_t deep_abgr[]
Definition: iff.c:415
#define DSD_SRGT
Definition: iff.c:173
#define NULL
Definition: coverity.c:32
#define DSD_SLFT
Definition: iff.c:172
unsigned transparency
transparency color index in palette
Definition: iff.c:120
#define ID_CAMG
Definition: iff.c:55
const char * s
Definition: avisynth_c.h:768
Bytestream IO Context.
Definition: avio.h:161
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define ID_ANHD
Definition: iff.c:67
static const uint32_t dsd_5point0[]
Definition: iff.c:182
int size
unsigned ham
0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise)
Definition: iff.c:118
#define ID_RGB8
Definition: iff.c:59
#define ID_ACBM
Definition: iff.c:57
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:3067
const char * fmt
Definition: avisynth_c.h:769
#define ID_PBM
Definition: iff.c:51
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
int64_t pos
byte position in stream, -1 if unknown
Definition: avcodec.h:1699
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4756
static FFServerConfig config
Definition: ffserver.c:193
static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
Definition: iff.c:249
#define avpriv_request_sample(...)
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:4152
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:959
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1680
#define ID3v2_DEFAULT_MAGIC
Default magic bytes for ID3v2 header: "ID3".
Definition: id3v2.h:35
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:244
unsigned maud_compression
Definition: iff.c:115
int64_t body_end
Definition: iff.c:111
static const uint32_t dsd_5point1[]
Definition: iff.c:183
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:133
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:329
int version
Definition: avisynth_c.h:766
static AVPacket pkt
#define ID_8SVX
Definition: iff.c:42
#define AV_CH_LAYOUT_STEREO
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:774
svx8_compression_type svx8_compression
Definition: iff.c:113
int ff_id3v2_parse_apic(AVFormatContext *s, ID3v2ExtraMeta **extra_meta)
Create a stream for each APIC (attached picture) extracted from the ID3v2 header. ...
Definition: id3v2.c:1149
#define AV_CH_LAYOUT_5POINT0
#define IFF_EXTRA_VIDEO_SIZE
This number of bytes if added at the beginning of each AVPacket which contain additional information ...
Definition: iff.c:100
#define ID_16SV
Definition: iff.c:43
static const DSDLayoutDesc dsd_channel_layout[]
Definition: iff.c:190
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
Format I/O context.
Definition: avformat.h:1349
#define ID_MHDR
Definition: iff.c:45
uint8_t tvdc[32]
TVDC lookup table.
Definition: iff.c:122
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
Public dictionary API.
#define ID_ANNO
Definition: iff.c:73
#define ID_FRTE
Definition: iff.c:65
uint8_t
#define av_malloc(s)
int width
Video only.
Definition: avcodec.h:4218
#define ID_MAUD
Definition: iff.c:44
int ff_id3v2_parse_chapters(AVFormatContext *s, ID3v2ExtraMeta **extra_meta)
Create chapters for all CHAP tags found in the ID3v2 header.
Definition: id3v2.c:1189
#define DSD_LS
Definition: iff.c:177
#define ID_NAME
Definition: iff.c:79
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:789
uint32_t body_size
Definition: iff.c:112
static int iff_probe(AVProbeData *p)
Definition: iff.c:145
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1697
static int parse_dsd_diin(AVFormatContext *s, AVStream *st, uint64_t eof)
Definition: iff.c:216
#define ID_DSD
Definition: iff.c:61
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4383
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1417
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:99
#define ID_DBOD
Definition: iff.c:83
Definition: iff.c:104
uint8_t * data
Definition: avcodec.h:1679
uint64_t layout
Definition: iff.c:186
uint32_t tag
Definition: movenc.c:1414
#define AVERROR_EOF
End of file.
Definition: error.h:55
int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
Allocate and read the payload of a packet and initialize its fields with default values.
Definition: utils.c:292
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:856
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:556
#define ID_DPAN
Definition: iff.c:69
#define ID_CHAN
Definition: iff.c:50
uint64_t channel_layout
Audio only.
Definition: avcodec.h:4254
#define av_log(a,...)
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:636
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: avcodec.h:4181
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1711
#define AV_CH_LAYOUT_5POINT1
#define ID_ANIM
Definition: iff.c:66
static int iff_read_header(AVFormatContext *s)
Definition: iff.c:417
#define ID_TEXT
Definition: iff.c:80
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:1709
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1567
#define ID_DST
Definition: iff.c:62
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:758
#define AVERROR(e)
Definition: error.h:43
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
Definition: bytestream.h:164
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:181
static const char * dsd_history_comment[]
Definition: iff.c:208
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:100
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
#define ID_FRM8
Definition: iff.c:72
#define av_fourcc2str(fourcc)
Definition: avutil.h:348
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:4148
static av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
Definition: bytestream.h:154
void ff_id3v2_free_extra_meta(ID3v2ExtraMeta **extra_meta)
Free memory allocated parsing special (non-text) metadata.
Definition: id3v2.c:1133
simple assert() macros that are a bit more flexible than ISO C assert().
#define ID_FORM
Definition: iff.c:71
#define ID_ILBM
Definition: iff.c:52
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:97
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:98
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1685
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:4170
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:627
#define DSD_C
Definition: iff.c:176
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:463
unsigned flags
1 for EHB, 0 is no extra half darkening
Definition: iff.c:119
int block_align
Audio only.
Definition: avcodec.h:4269
#define ID_VHDR
Definition: iff.c:47
#define ID_TVDC
Definition: iff.c:86
audio channel layout utility functions
Definition: iff.c:105
#define ID_ABIT
Definition: iff.c:81
#define ID_BODY
Definition: iff.c:82
#define FFMIN(a, b)
Definition: common.h:96
AVInputFormat ff_iff_demuxer
Definition: iff.c:898
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that&#39;s been allocated with av_malloc() or another memory allocation functio...
Definition: dict.h:76
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
#define ID_AUTH
Definition: iff.c:74
#define DSD_MLFT
Definition: iff.c:174
static const uint32_t dsd_stereo[]
Definition: iff.c:181
#define AV_RL32
Definition: intreadwrite.h:146
AVDictionary * metadata
Definition: avformat.h:961
int64_t pts
Definition: iff.c:123
if(ret< 0)
Definition: vf_mcdeint.c:279
#define FF_ARRAY_ELEMS(a)
static int iff_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: iff.c:826
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:528
Stream structure.
Definition: avformat.h:889
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
svx8_compression_type
Definition: iff.c:102
unsigned bpp
bits per plane to decode (differs from bits_per_coded_sample if HAM)
Definition: iff.c:117
AVIOContext * pb
I/O context.
Definition: avformat.h:1391
static const uint64_t dsd_loudspeaker_config[]
Definition: iff.c:196
#define ID_RGBN
Definition: iff.c:60
void * buf
Definition: avisynth_c.h:690
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
#define ID_MDAT
Definition: iff.c:46
#define ID_DEEP
Definition: iff.c:58
static const AVCodecTag dsd_codec_tags[]
Definition: iff.c:165
#define AVFMT_GENERIC_INDEX
Use generic index building code.
Definition: avformat.h:487
unsigned maud_bits
Definition: iff.c:114
#define snprintf
Definition: snprintf.h:34
This structure contains the data a format has to probe a file.
Definition: avformat.h:461
#define ID_DGBL
Definition: iff.c:54
#define ID_DLOC
Definition: iff.c:85
const uint32_t * dsd_layout
Definition: iff.c:187
static const uint8_t deep_rgba[]
Definition: iff.c:412
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:946
int sample_rate
Audio only.
Definition: avcodec.h:4262
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:473
Main libavformat public API header.
unsigned bitmap_compression
delta compression method used
Definition: iff.c:116
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
int is_64bit
chunk size is 64-bit
Definition: iff.c:109
static const uint8_t deep_bgra[]
Definition: iff.c:413
#define ID_CMAP
Definition: iff.c:56
#define DSD_LFE
Definition: iff.c:179
void ff_id3v2_read(AVFormatContext *s, const char *magic, ID3v2ExtraMeta **extra_meta, unsigned int max_search_size)
Read an ID3v2 tag, including supported extra metadata.
Definition: id3v2.c:1127
int den
Denominator.
Definition: rational.h:60
static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
Definition: bytestream.h:368
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:777
Definition: iff.c:103
static const uint8_t deep_rgb24[]
Definition: iff.c:411
#define av_free(p)
#define AVFMT_NO_BYTE_SEEK
Format does not allow seeking by bytes.
Definition: avformat.h:494
static const char * dsd_source_comment[]
Definition: iff.c:202
void * priv_data
Format private data.
Definition: avformat.h:1377
int64_t body_pos
Definition: iff.c:110
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: avcodec.h:4194
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:4166
int channels
Audio only.
Definition: avcodec.h:4258
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:664
#define ID_DPEL
Definition: iff.c:84
static int get_metadata(AVFormatContext *s, const char *const tag, const unsigned data_size)
Definition: iff.c:127
AVCodecParameters * codecpar
Definition: avformat.h:1252
int avio_feof(AVIOContext *s)
feof() equivalent for AVIOContext.
Definition: aviobuf.c:356
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:4156
#define DSD_MRGT
Definition: iff.c:175
#define DSD_RS
Definition: iff.c:178
static const uint8_t deep_argb[]
Definition: iff.c:414
int stream_index
Definition: avcodec.h:1681
#define ID_COPYRIGHT
Definition: iff.c:76
#define AV_CH_LAYOUT_MONO
#define MKTAG(a, b, c, d)
Definition: common.h:342
#define ID_BMHD
Definition: iff.c:53
float min
This structure stores compressed data.
Definition: avcodec.h:1656
#define ID_DSTF
Definition: iff.c:64
static int read_dst_frame(AVFormatContext *s, AVPacket *pkt)
Definition: iff.c:354
unsigned masking
masking method used
Definition: iff.c:121
static unsigned get_anim_duration(uint8_t *buf, int size)
Definition: iff.c:804
static uint8_t tmp[11]
Definition: aes_ctr.c:26