FFmpeg  4.3
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;
141  av_dict_set(&s->metadata, tag, buf, AV_DICT_DONT_STRDUP_VAL);
142  return 0;
143 }
144 
145 static int iff_probe(const 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  switch(tag) {
227  case MKTAG('D','I','A','R'): metadata_tag = "artist"; break;
228  case MKTAG('D','I','T','I'): metadata_tag = "title"; break;
229  }
230 
231  if (metadata_tag && size > 4) {
232  unsigned int tag_size = avio_rb32(pb);
233  int ret = get_metadata(s, metadata_tag, FFMIN(tag_size, size - 4));
234  if (ret < 0) {
235  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
236  return ret;
237  }
238  }
239 
240  avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
241  }
242 
243  return 0;
244 }
245 
246 static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
247 {
248  AVIOContext *pb = s->pb;
249  char abss[24];
250  int hour, min, sec, i, ret, config;
251  int dsd_layout[6];
252  ID3v2ExtraMeta *id3v2_extra_meta;
253 
254  while (avio_tell(pb) + 12 <= eof && !avio_feof(pb)) {
255  uint32_t tag = avio_rl32(pb);
256  uint64_t size = avio_rb64(pb);
257  uint64_t orig_pos = avio_tell(pb);
258 
259  switch(tag) {
260  case MKTAG('A','B','S','S'):
261  if (size < 8)
262  return AVERROR_INVALIDDATA;
263  hour = avio_rb16(pb);
264  min = avio_r8(pb);
265  sec = avio_r8(pb);
266  snprintf(abss, sizeof(abss), "%02dh:%02dm:%02ds:%d", hour, min, sec, avio_rb32(pb));
267  av_dict_set(&st->metadata, "absolute_start_time", abss, 0);
268  break;
269 
270  case MKTAG('C','H','N','L'):
271  if (size < 2)
272  return AVERROR_INVALIDDATA;
273  st->codecpar->channels = avio_rb16(pb);
274  if (size < 2 + st->codecpar->channels * 4)
275  return AVERROR_INVALIDDATA;
276  st->codecpar->channel_layout = 0;
277  if (st->codecpar->channels > FF_ARRAY_ELEMS(dsd_layout)) {
278  avpriv_request_sample(s, "channel layout");
279  break;
280  }
281  for (i = 0; i < st->codecpar->channels; i++)
282  dsd_layout[i] = avio_rl32(pb);
283  for (i = 0; i < FF_ARRAY_ELEMS(dsd_channel_layout); i++) {
284  const DSDLayoutDesc * d = &dsd_channel_layout[i];
286  !memcmp(d->dsd_layout, dsd_layout, st->codecpar->channels * sizeof(uint32_t))) {
287  st->codecpar->channel_layout = d->layout;
288  break;
289  }
290  }
291  break;
292 
293  case MKTAG('C','M','P','R'):
294  if (size < 4)
295  return AVERROR_INVALIDDATA;
296  st->codecpar->codec_tag = tag = avio_rl32(pb);
298  if (!st->codecpar->codec_id) {
299  av_log(s, AV_LOG_ERROR, "'%s' compression is not supported\n",
300  av_fourcc2str(tag));
301  return AVERROR_PATCHWELCOME;
302  }
303  break;
304 
305  case MKTAG('F','S',' ',' '):
306  if (size < 4)
307  return AVERROR_INVALIDDATA;
308  st->codecpar->sample_rate = avio_rb32(pb) / 8;
309  break;
310 
311  case MKTAG('I','D','3',' '):
312  id3v2_extra_meta = NULL;
313  ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, size);
314  if (id3v2_extra_meta) {
315  if ((ret = ff_id3v2_parse_apic(s, id3v2_extra_meta)) < 0 ||
316  (ret = ff_id3v2_parse_chapters(s, id3v2_extra_meta)) < 0) {
317  ff_id3v2_free_extra_meta(&id3v2_extra_meta);
318  return ret;
319  }
320  ff_id3v2_free_extra_meta(&id3v2_extra_meta);
321  }
322 
323  if (size < avio_tell(pb) - orig_pos) {
324  av_log(s, AV_LOG_ERROR, "id3 exceeds chunk size\n");
325  return AVERROR_INVALIDDATA;
326  }
327  break;
328 
329  case MKTAG('L','S','C','O'):
330  if (size < 2)
331  return AVERROR_INVALIDDATA;
332  config = avio_rb16(pb);
333  if (config != 0xFFFF) {
336  if (!st->codecpar->channel_layout)
337  avpriv_request_sample(s, "loudspeaker configuration %d", config);
338  }
339  break;
340  }
341 
342  avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
343  }
344 
345  return 0;
346 }
347 
349 {
350  IffDemuxContext *iff = s->priv_data;
351  AVIOContext *pb = s->pb;
352  uint32_t chunk_id;
353  uint64_t chunk_pos, data_pos, data_size;
354  int ret = AVERROR_EOF;
355 
356  while (!avio_feof(pb)) {
357  chunk_pos = avio_tell(pb);
358  if (chunk_pos >= iff->body_end)
359  return AVERROR_EOF;
360 
361  chunk_id = avio_rl32(pb);
362  data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
363  data_pos = avio_tell(pb);
364 
365  if (data_size < 1)
366  return AVERROR_INVALIDDATA;
367 
368  switch (chunk_id) {
369  case ID_DSTF:
370  if (!pkt) {
371  iff->body_pos = avio_tell(pb) - (iff->is_64bit ? 12 : 8);
372  iff->body_size = iff->body_end - iff->body_pos;
373  return 0;
374  }
375  ret = av_get_packet(pb, pkt, data_size);
376  if (ret < 0)
377  return ret;
378  if (data_size & 1)
379  avio_skip(pb, 1);
381  pkt->stream_index = 0;
382  pkt->duration = 588 * s->streams[0]->codecpar->sample_rate / 44100;
383  pkt->pos = chunk_pos;
384 
385  chunk_pos = avio_tell(pb);
386  if (chunk_pos >= iff->body_end)
387  return 0;
388 
389  avio_seek(pb, chunk_pos, SEEK_SET);
390  return 0;
391 
392  case ID_FRTE:
393  if (data_size < 4)
394  return AVERROR_INVALIDDATA;
395  s->streams[0]->duration = avio_rb32(pb) * 588LL * s->streams[0]->codecpar->sample_rate / 44100;
396  break;
397  }
398 
399  avio_skip(pb, data_size - (avio_tell(pb) - data_pos) + (data_size & 1));
400  }
401 
402  return ret;
403 }
404 
405 static const uint8_t deep_rgb24[] = {0, 0, 0, 3, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
406 static const uint8_t deep_rgba[] = {0, 0, 0, 4, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
407 static const uint8_t deep_bgra[] = {0, 0, 0, 4, 0, 3, 0, 8, 0, 2, 0, 8, 0, 1, 0, 8};
408 static const uint8_t deep_argb[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 1, 0, 8, 0, 2, 0, 8};
409 static const uint8_t deep_abgr[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 3, 0, 8, 0, 2, 0, 8};
410 
412 {
413  IffDemuxContext *iff = s->priv_data;
414  AVIOContext *pb = s->pb;
415  AVStream *st;
416  uint8_t *buf;
417  uint32_t chunk_id;
418  uint64_t data_size;
419  uint32_t screenmode = 0, num, den;
420  unsigned transparency = 0;
421  unsigned masking = 0; // no mask
422  uint8_t fmt[16];
423  int fmt_size;
424 
425  st = avformat_new_stream(s, NULL);
426  if (!st)
427  return AVERROR(ENOMEM);
428 
429  st->codecpar->channels = 1;
431  iff->is_64bit = avio_rl32(pb) == ID_FRM8;
432  avio_skip(pb, iff->is_64bit ? 8 : 4);
433  // codec_tag used by ByteRun1 decoder to distinguish progressive (PBM) and interlaced (ILBM) content
434  st->codecpar->codec_tag = avio_rl32(pb);
435  if (st->codecpar->codec_tag == ID_ANIM) {
436  avio_skip(pb, 12);
437  }
438  iff->bitmap_compression = -1;
439  iff->svx8_compression = -1;
440  iff->maud_bits = -1;
441  iff->maud_compression = -1;
442 
443  while(!avio_feof(pb)) {
444  uint64_t orig_pos;
445  int res;
446  const char *metadata_tag = NULL;
447  int version, nb_comments, i;
448  chunk_id = avio_rl32(pb);
449  data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
450  orig_pos = avio_tell(pb);
451 
452  switch(chunk_id) {
453  case ID_VHDR:
455 
456  if (data_size < 14)
457  return AVERROR_INVALIDDATA;
458  avio_skip(pb, 12);
459  st->codecpar->sample_rate = avio_rb16(pb);
460  if (data_size >= 16) {
461  avio_skip(pb, 1);
462  iff->svx8_compression = avio_r8(pb);
463  }
464  break;
465 
466  case ID_MHDR:
468 
469  if (data_size < 32)
470  return AVERROR_INVALIDDATA;
471  avio_skip(pb, 4);
472  iff->maud_bits = avio_rb16(pb);
473  avio_skip(pb, 2);
474  num = avio_rb32(pb);
475  den = avio_rb16(pb);
476  if (!den)
477  return AVERROR_INVALIDDATA;
478  avio_skip(pb, 2);
479  st->codecpar->sample_rate = num / den;
480  st->codecpar->channels = avio_rb16(pb);
481  iff->maud_compression = avio_rb16(pb);
482  if (st->codecpar->channels == 1)
484  else if (st->codecpar->channels == 2)
486  break;
487 
488  case ID_ABIT:
489  case ID_BODY:
490  case ID_DBOD:
491  case ID_DSD:
492  case ID_DST:
493  case ID_MDAT:
494  iff->body_pos = avio_tell(pb);
495  iff->body_end = iff->body_pos + data_size;
496  iff->body_size = data_size;
497  if (chunk_id == ID_DST) {
498  int ret = read_dst_frame(s, NULL);
499  if (ret < 0)
500  return ret;
501  }
502  break;
503 
504  case ID_CHAN:
505  if (data_size < 4)
506  return AVERROR_INVALIDDATA;
507  if (avio_rb32(pb) < 6) {
508  st->codecpar->channels = 1;
510  } else {
511  st->codecpar->channels = 2;
513  }
514  break;
515 
516  case ID_CAMG:
517  if (data_size < 4)
518  return AVERROR_INVALIDDATA;
519  screenmode = avio_rb32(pb);
520  break;
521 
522  case ID_CMAP:
523  if (data_size < 3 || data_size > 768 || data_size % 3) {
524  av_log(s, AV_LOG_ERROR, "Invalid CMAP chunk size %"PRIu64"\n",
525  data_size);
526  return AVERROR_INVALIDDATA;
527  }
528  res = ff_alloc_extradata(st->codecpar,
529  data_size + IFF_EXTRA_VIDEO_SIZE);
530  if (res < 0)
531  return res;
532  if (avio_read(pb, st->codecpar->extradata + IFF_EXTRA_VIDEO_SIZE, data_size) < 0) {
533  av_freep(&st->codecpar->extradata);
534  st->codecpar->extradata_size = 0;
535  return AVERROR(EIO);
536  }
537  break;
538 
539  case ID_BMHD:
541  if (data_size <= 8)
542  return AVERROR_INVALIDDATA;
543  st->codecpar->width = avio_rb16(pb);
544  st->codecpar->height = avio_rb16(pb);
545  avio_skip(pb, 4); // x, y offset
547  if (data_size >= 10)
548  masking = avio_r8(pb);
549  if (data_size >= 11)
550  iff->bitmap_compression = avio_r8(pb);
551  if (data_size >= 14) {
552  avio_skip(pb, 1); // padding
553  transparency = avio_rb16(pb);
554  }
555  if (data_size >= 16) {
556  st->sample_aspect_ratio.num = avio_r8(pb);
557  st->sample_aspect_ratio.den = avio_r8(pb);
558  }
559  break;
560 
561  case ID_ANHD:
562  break;
563 
564  case ID_DPAN:
565  avio_skip(pb, 2);
566  st->duration = avio_rb16(pb);
567  break;
568 
569  case ID_DPEL:
570  if (data_size < 4 || (data_size & 3))
571  return AVERROR_INVALIDDATA;
572  if ((fmt_size = avio_read(pb, fmt, sizeof(fmt))) < 0)
573  return fmt_size;
574  if (fmt_size == sizeof(deep_rgb24) && !memcmp(fmt, deep_rgb24, sizeof(deep_rgb24)))
576  else if (fmt_size == sizeof(deep_rgba) && !memcmp(fmt, deep_rgba, sizeof(deep_rgba)))
578  else if (fmt_size == sizeof(deep_bgra) && !memcmp(fmt, deep_bgra, sizeof(deep_bgra)))
580  else if (fmt_size == sizeof(deep_argb) && !memcmp(fmt, deep_argb, sizeof(deep_argb)))
582  else if (fmt_size == sizeof(deep_abgr) && !memcmp(fmt, deep_abgr, sizeof(deep_abgr)))
584  else {
585  avpriv_request_sample(s, "color format %.16s", fmt);
586  return AVERROR_PATCHWELCOME;
587  }
588  break;
589 
590  case ID_DGBL:
592  if (data_size < 8)
593  return AVERROR_INVALIDDATA;
594  st->codecpar->width = avio_rb16(pb);
595  st->codecpar->height = avio_rb16(pb);
596  iff->bitmap_compression = avio_rb16(pb);
597  st->sample_aspect_ratio.num = avio_r8(pb);
598  st->sample_aspect_ratio.den = avio_r8(pb);
600  break;
601 
602  case ID_DLOC:
603  if (data_size < 4)
604  return AVERROR_INVALIDDATA;
605  st->codecpar->width = avio_rb16(pb);
606  st->codecpar->height = avio_rb16(pb);
607  break;
608 
609  case ID_TVDC:
610  if (data_size < sizeof(iff->tvdc))
611  return AVERROR_INVALIDDATA;
612  res = avio_read(pb, iff->tvdc, sizeof(iff->tvdc));
613  if (res < 0)
614  return res;
615  break;
616 
617  case ID_ANNO:
618  case ID_TEXT: metadata_tag = "comment"; break;
619  case ID_AUTH: metadata_tag = "artist"; break;
620  case ID_COPYRIGHT: metadata_tag = "copyright"; break;
621  case ID_NAME: metadata_tag = "title"; break;
622 
623  /* DSD tags */
624 
625  case MKTAG('F','V','E','R'):
626  if (data_size < 4)
627  return AVERROR_INVALIDDATA;
628  version = avio_rb32(pb);
629  av_log(s, AV_LOG_DEBUG, "DSIFF v%d.%d.%d.%d\n",version >> 24, (version >> 16) & 0xFF, (version >> 8) & 0xFF, version & 0xFF);
631  break;
632 
633  case MKTAG('D','I','I','N'):
634  res = parse_dsd_diin(s, st, orig_pos + data_size);
635  if (res < 0)
636  return res;
637  break;
638 
639  case MKTAG('P','R','O','P'):
640  if (data_size < 4)
641  return AVERROR_INVALIDDATA;
642  if (avio_rl32(pb) != MKTAG('S','N','D',' ')) {
643  avpriv_request_sample(s, "unknown property type");
644  break;
645  }
646  res = parse_dsd_prop(s, st, orig_pos + data_size);
647  if (res < 0)
648  return res;
649  break;
650 
651  case MKTAG('C','O','M','T'):
652  if (data_size < 2)
653  return AVERROR_INVALIDDATA;
654  nb_comments = avio_rb16(pb);
655  for (i = 0; i < nb_comments; i++) {
656  int year, mon, day, hour, min, type, ref;
657  char tmp[24];
658  const char *tag;
659  int metadata_size;
660 
661  year = avio_rb16(pb);
662  mon = avio_r8(pb);
663  day = avio_r8(pb);
664  hour = avio_r8(pb);
665  min = avio_r8(pb);
666  snprintf(tmp, sizeof(tmp), "%04d-%02d-%02d %02d:%02d", year, mon, day, hour, min);
667  av_dict_set(&st->metadata, "comment_time", tmp, 0);
668 
669  type = avio_rb16(pb);
670  ref = avio_rb16(pb);
671  switch (type) {
672  case 1:
673  if (!i)
674  tag = "channel_comment";
675  else {
676  snprintf(tmp, sizeof(tmp), "channel%d_comment", ref);
677  tag = tmp;
678  }
679  break;
680  case 2:
681  tag = ref < FF_ARRAY_ELEMS(dsd_source_comment) ? dsd_source_comment[ref] : "source_comment";
682  break;
683  case 3:
685  break;
686  default:
687  tag = "comment";
688  }
689 
690  metadata_size = avio_rb32(pb);
691  if ((res = get_metadata(s, tag, metadata_size)) < 0) {
692  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", tag);
693  return res;
694  }
695 
696  if (metadata_size & 1)
697  avio_skip(pb, 1);
698  }
699  break;
700  }
701 
702  if (metadata_tag) {
703  if ((res = get_metadata(s, metadata_tag, data_size)) < 0) {
704  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
705  return res;
706  }
707  }
708  avio_skip(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1));
709  }
710 
711  if (st->codecpar->codec_tag == ID_ANIM)
712  avio_seek(pb, 12, SEEK_SET);
713  else
714  avio_seek(pb, iff->body_pos, SEEK_SET);
715 
716  switch(st->codecpar->codec_type) {
717  case AVMEDIA_TYPE_AUDIO:
718  avpriv_set_pts_info(st, 32, 1, st->codecpar->sample_rate);
719 
720  if (st->codecpar->codec_tag == ID_16SV)
722  else if (st->codecpar->codec_tag == ID_MAUD) {
723  if (iff->maud_bits == 8 && !iff->maud_compression) {
725  } else if (iff->maud_bits == 16 && !iff->maud_compression) {
727  } else if (iff->maud_bits == 8 && iff->maud_compression == 2) {
729  } else if (iff->maud_bits == 8 && iff->maud_compression == 3) {
731  } else {
732  avpriv_request_sample(s, "compression %d and bit depth %d", iff->maud_compression, iff->maud_bits);
733  return AVERROR_PATCHWELCOME;
734  }
735  } else if (st->codecpar->codec_tag != ID_DSD &&
736  st->codecpar->codec_tag != ID_DST) {
737  switch (iff->svx8_compression) {
738  case COMP_NONE:
740  break;
741  case COMP_FIB:
743  break;
744  case COMP_EXP:
746  break;
747  default:
749  "Unknown SVX8 compression method '%d'\n", iff->svx8_compression);
750  return -1;
751  }
752  }
753 
757  if (st->codecpar->codec_tag == ID_DSD && st->codecpar->block_align <= 0)
758  return AVERROR_INVALIDDATA;
759  break;
760 
761  case AVMEDIA_TYPE_VIDEO:
762  iff->bpp = st->codecpar->bits_per_coded_sample;
763  if (st->codecpar->codec_tag == ID_ANIM)
764  avpriv_set_pts_info(st, 32, 1, 60);
765  if ((screenmode & 0x800 /* Hold And Modify */) && iff->bpp <= 8) {
766  iff->ham = iff->bpp > 6 ? 6 : 4;
768  }
769  iff->flags = (screenmode & 0x80 /* Extra HalfBrite */) && iff->bpp <= 8;
770  iff->masking = masking;
771  iff->transparency = transparency;
772 
773  if (!st->codecpar->extradata) {
775  if (ret < 0)
776  return ret;
777  }
779  buf = st->codecpar->extradata;
780  bytestream_put_be16(&buf, IFF_EXTRA_VIDEO_SIZE);
781  bytestream_put_byte(&buf, iff->bitmap_compression);
782  bytestream_put_byte(&buf, iff->bpp);
783  bytestream_put_byte(&buf, iff->ham);
784  bytestream_put_byte(&buf, iff->flags);
785  bytestream_put_be16(&buf, iff->transparency);
786  bytestream_put_byte(&buf, iff->masking);
787  bytestream_put_buffer(&buf, iff->tvdc, sizeof(iff->tvdc));
789  break;
790  default:
791  return -1;
792  }
793 
794  return 0;
795 }
796 
797 static unsigned get_anim_duration(uint8_t *buf, int size)
798 {
799  GetByteContext gb;
800 
801  bytestream2_init(&gb, buf, size);
802  bytestream2_skip(&gb, 4);
803  while (bytestream2_get_bytes_left(&gb) > 8) {
804  unsigned chunk = bytestream2_get_le32(&gb);
805  unsigned size = bytestream2_get_be32(&gb);
806 
807  if (chunk == ID_ANHD) {
808  if (size < 40)
809  break;
810  bytestream2_skip(&gb, 14);
811  return bytestream2_get_be32(&gb);
812  } else {
813  bytestream2_skip(&gb, size + size & 1);
814  }
815  }
816  return 10;
817 }
818 
820  AVPacket *pkt)
821 {
822  IffDemuxContext *iff = s->priv_data;
823  AVIOContext *pb = s->pb;
824  AVStream *st = s->streams[0];
825  int ret;
826  int64_t pos = avio_tell(pb);
827 
828  if (avio_feof(pb))
829  return AVERROR_EOF;
830  if (st->codecpar->codec_tag != ID_ANIM && pos >= iff->body_end)
831  return AVERROR_EOF;
832 
833  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
834  if (st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) {
835  ret = av_get_packet(pb, pkt, FFMIN(iff->body_end - pos, 1024 * st->codecpar->block_align));
836  } else if (st->codecpar->codec_tag == ID_DST) {
837  return read_dst_frame(s, pkt);
838  } else {
839  if (iff->body_size > INT_MAX)
840  return AVERROR_INVALIDDATA;
841  ret = av_get_packet(pb, pkt, iff->body_size);
842  }
843  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
844  st->codecpar->codec_tag == ID_ANIM) {
845  uint64_t data_size, orig_pos;
846  uint32_t chunk_id, chunk_id2;
847 
848  while (!avio_feof(pb)) {
849  if (avio_feof(pb))
850  return AVERROR_EOF;
851 
852  orig_pos = avio_tell(pb);
853  chunk_id = avio_rl32(pb);
854  data_size = avio_rb32(pb);
855  chunk_id2 = avio_rl32(pb);
856 
857  if (chunk_id == ID_FORM &&
858  chunk_id2 == ID_ILBM) {
859  avio_skip(pb, -4);
860  break;
861  } else if (chunk_id == ID_FORM &&
862  chunk_id2 == ID_ANIM) {
863  continue;
864  } else {
865  avio_skip(pb, data_size);
866  }
867  }
868  ret = av_get_packet(pb, pkt, data_size);
869  pkt->pos = orig_pos;
871  if (pos == 12)
873  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
874  st->codecpar->codec_tag != ID_ANIM) {
875  ret = av_get_packet(pb, pkt, iff->body_size);
876  pkt->pos = pos;
877  if (pos == iff->body_pos)
879  } else {
880  av_assert0(0);
881  }
882 
883  if (ret < 0)
884  return ret;
885  pkt->stream_index = 0;
886  return ret;
887 }
888 
890  .name = "iff",
891  .long_name = NULL_IF_CONFIG_SMALL("IFF (Interchange File Format)"),
892  .priv_data_size = sizeof(IffDemuxContext),
897 };
IffDemuxContext::svx8_compression
svx8_compression_type svx8_compression
Definition: iff.c:113
AVCodecParameters::extradata
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
AVFMT_NO_BYTE_SEEK
#define AVFMT_NO_BYTE_SEEK
Format does not allow seeking by bytes.
Definition: avformat.h:470
AVERROR
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
avformat_new_stream
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4519
deep_argb
static const uint8_t deep_argb[]
Definition: iff.c:408
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
ID_BODY
#define ID_BODY
Definition: iff.c:82
ID_CMAP
#define ID_CMAP
Definition: iff.c:56
GetByteContext
Definition: bytestream.h:33
dsd_loudspeaker_config
static const uint64_t dsd_loudspeaker_config[]
Definition: iff.c:196
ID_PBM
#define ID_PBM
Definition: iff.c:51
ID_RGBN
#define ID_RGBN
Definition: iff.c:60
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:55
MKTAG
#define MKTAG(a, b, c, d)
Definition: common.h:406
AV_CODEC_ID_8SVX_EXP
@ AV_CODEC_ID_8SVX_EXP
Definition: codec_id.h:464
AV_CH_LAYOUT_MONO
#define AV_CH_LAYOUT_MONO
Definition: channel_layout.h:85
ID_CHAN
#define ID_CHAN
Definition: iff.c:50
ID_DEEP
#define ID_DEEP
Definition: iff.c:58
ID_DSTF
#define ID_DSTF
Definition: iff.c:64
id3v2.h
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:26
DSD_MRGT
#define DSD_MRGT
Definition: iff.c:175
AVPacket::data
uint8_t * data
Definition: packet.h:355
AV_CODEC_ID_PCM_S16BE_PLANAR
@ AV_CODEC_ID_PCM_S16BE_PLANAR
Definition: codec_id.h:331
ff_id3v2_read
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:1108
deep_bgra
static const uint8_t deep_bgra[]
Definition: iff.c:407
IffDemuxContext::masking
unsigned masking
masking method used
Definition: iff.c:121
AV_PIX_FMT_BGRA
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:95
AVPacket::duration
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:373
AVCodecParameters::codec_tag
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
get_anim_duration
static unsigned get_anim_duration(uint8_t *buf, int size)
Definition: iff.c:797
IffDemuxContext::body_size
uint32_t body_size
Definition: iff.c:112
ff_id3v2_parse_chapters
int ff_id3v2_parse_chapters(AVFormatContext *s, ID3v2ExtraMeta *extra_meta)
Create chapters for all CHAP tags found in the ID3v2 header.
Definition: id3v2.c:1170
ID_ILBM
#define ID_ILBM
Definition: iff.c:52
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:388
COMP_NONE
@ COMP_NONE
Definition: iff.c:103
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:31
DSDLayoutDesc::layout
uint64_t layout
Definition: iff.c:186
AVPROBE_SCORE_MAX
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:453
bytestream2_skip
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
Definition: bytestream.h:164
AVCodecParameters::channels
int channels
Audio only.
Definition: codec_par.h:166
ID_DGBL
#define ID_DGBL
Definition: iff.c:54
ID_TEXT
#define ID_TEXT
Definition: iff.c:80
AV_CODEC_ID_IFF_ILBM
@ AV_CODEC_ID_IFF_ILBM
Definition: codec_id.h:185
AV_CODEC_ID_PCM_S16BE
@ AV_CODEC_ID_PCM_S16BE
Definition: codec_id.h:302
ID_DBOD
#define ID_DBOD
Definition: iff.c:83
avio_tell
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
AVFMT_GENERIC_INDEX
#define AVFMT_GENERIC_INDEX
Use generic index building code.
Definition: avformat.h:463
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
dsd_source_comment
static const char * dsd_source_comment[]
Definition: iff.c:202
AVStream::duration
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:914
AV_CODEC_ID_8SVX_FIB
@ AV_CODEC_ID_8SVX_FIB
Definition: codec_id.h:465
AVRational::num
int num
Numerator.
Definition: rational.h:59
AV_CH_LAYOUT_STEREO
#define AV_CH_LAYOUT_STEREO
Definition: channel_layout.h:86
ID_FORM
#define ID_FORM
Definition: iff.c:71
parse_dsd_prop
static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
Definition: iff.c:246
AV_DICT_DONT_STRDUP_VAL
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that's been allocated with av_malloc() or another memory allocation functio...
Definition: dict.h:74
avassert.h
avio_rb32
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:778
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
AVInputFormat
Definition: avformat.h:636
AVCodecTag
Definition: internal.h:42
ID3v2ExtraMeta
Definition: id3v2.h:84
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:257
DSD_RS
#define DSD_RS
Definition: iff.c:178
AVInputFormat::name
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:641
iff_read_header
static int iff_read_header(AVFormatContext *s)
Definition: iff.c:411
AVProbeData::buf
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:443
iff_read_packet
static int iff_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: iff.c:819
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
AVCodecParameters::width
int width
Video only.
Definition: codec_par.h:126
IffDemuxContext::tvdc
uint8_t tvdc[32]
TVDC lookup table.
Definition: iff.c:122
DSD_C
#define DSD_C
Definition: iff.c:176
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
ID_DPEL
#define ID_DPEL
Definition: iff.c:84
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
ID_8SVX
#define ID_8SVX
Definition: iff.c:42
AV_CODEC_ID_PCM_MULAW
@ AV_CODEC_ID_PCM_MULAW
Definition: codec_id.h:307
ID_AUTH
#define ID_AUTH
Definition: iff.c:74
ID_BMHD
#define ID_BMHD
Definition: iff.c:53
AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:93
if
if(ret)
Definition: filter_design.txt:179
DSD_SRGT
#define DSD_SRGT
Definition: iff.c:173
AVFormatContext
Format I/O context.
Definition: avformat.h:1335
AV_CODEC_ID_PCM_ALAW
@ AV_CODEC_ID_PCM_ALAW
Definition: codec_id.h:308
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1012
read_header
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:527
DSD_LFE
#define DSD_LFE
Definition: iff.c:179
NULL
#define NULL
Definition: coverity.c:32
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
AV_CODEC_ID_DST
@ AV_CODEC_ID_DST
Definition: codec_id.h:492
read_probe
static int read_probe(const AVProbeData *pd)
Definition: jvdec.c:55
ID_FRTE
#define ID_FRTE
Definition: iff.c:65
ff_id3v2_parse_apic
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:1130
avio_rb64
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:899
dsd_codec_tags
static const AVCodecTag dsd_codec_tags[]
Definition: iff.c:165
AV_CH_LAYOUT_5POINT1
#define AV_CH_LAYOUT_5POINT1
Definition: channel_layout.h:96
AVProbeData
This structure contains the data a format has to probe a file.
Definition: avformat.h:441
AVStream::metadata
AVDictionary * metadata
Definition: avformat.h:929
IffDemuxContext
Definition: iff.c:108
ID_ACBM
#define ID_ACBM
Definition: iff.c:57
AV_PIX_FMT_ABGR
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:94
ID_DPAN
#define ID_DPAN
Definition: iff.c:69
AVCodecParameters::sample_rate
int sample_rate
Audio only.
Definition: codec_par.h:170
av_get_channel_layout_nb_channels
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
Definition: channel_layout.c:220
bytestream2_get_bytes_left
static av_always_inline int bytestream2_get_bytes_left(GetByteContext *g)
Definition: bytestream.h:154
AVCodecParameters::extradata_size
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
ID_ABIT
#define ID_ABIT
Definition: iff.c:81
dsd_history_comment
static const char * dsd_history_comment[]
Definition: iff.c:208
av_get_bits_per_sample
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:1552
avio_rl32
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:747
AVIOContext
Bytestream IO Context.
Definition: avio.h:161
AV_PIX_FMT_RGB24
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
AVPacket::size
int size
Definition: packet.h:356
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:186
IffDemuxContext::flags
unsigned flags
1 for EHB, 0 is no extra half darkening
Definition: iff.c:119
ff_codec_get_id
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:3158
iff_probe
static int iff_probe(const AVProbeData *p)
Definition: iff.c:145
AV_CODEC_ID_DSD_MSBF
@ AV_CODEC_ID_DSD_MSBF
Definition: codec_id.h:485
ID_ANIM
#define ID_ANIM
Definition: iff.c:66
avpriv_set_pts_info
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:4938
size
int size
Definition: twinvq_data.h:11134
ID3v2_DEFAULT_MAGIC
#define ID3v2_DEFAULT_MAGIC
Default magic bytes for ID3v2 header: "ID3".
Definition: id3v2.h:35
ID_CAMG
#define ID_CAMG
Definition: iff.c:55
AVStream::sample_aspect_ratio
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:927
read_dst_frame
static int read_dst_frame(AVFormatContext *s, AVPacket *pkt)
Definition: iff.c:348
ID_MHDR
#define ID_MHDR
Definition: iff.c:45
DSD_MLFT
#define DSD_MLFT
Definition: iff.c:174
avio_r8
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:616
FFMIN
#define FFMIN(a, b)
Definition: common.h:96
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:361
version
version
Definition: libkvazaar.c:292
ID_FRM8
#define ID_FRM8
Definition: iff.c:72
deep_rgb24
static const uint8_t deep_rgb24[]
Definition: iff.c:405
AV_PIX_FMT_ARGB
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:92
COMP_FIB
@ COMP_FIB
Definition: iff.c:104
IffDemuxContext::pts
int64_t pts
Definition: iff.c:123
AV_CH_LAYOUT_5POINT0
#define AV_CH_LAYOUT_5POINT0
Definition: channel_layout.h:95
IffDemuxContext::maud_bits
unsigned maud_bits
Definition: iff.c:114
bytestream_put_buffer
static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
Definition: bytestream.h:368
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:47
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
get_metadata
static int get_metadata(AVFormatContext *s, const char *const tag, const unsigned data_size)
Definition: iff.c:127
AVCodecParameters::height
int height
Definition: codec_par.h:127
ID_RGB8
#define ID_RGB8
Definition: iff.c:59
AVCodecParameters::block_align
int block_align
Audio only.
Definition: codec_par.h:177
ID_DST
#define ID_DST
Definition: iff.c:62
uint8_t
uint8_t
Definition: audio_convert.c:194
IffDemuxContext::bitmap_compression
unsigned bitmap_compression
delta compression method used
Definition: iff.c:116
IffDemuxContext::body_pos
int64_t body_pos
Definition: iff.c:110
ID_VHDR
#define ID_VHDR
Definition: iff.c:47
ID_DLOC
#define ID_DLOC
Definition: iff.c:85
ID_DSD
#define ID_DSD
Definition: iff.c:61
av_get_packet
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:304
ID_ANHD
#define ID_ANHD
Definition: iff.c:67
tag
uint32_t tag
Definition: movenc.c:1532
ret
ret
Definition: filter_design.txt:187
read_packet
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
AVStream
Stream structure.
Definition: avformat.h:865
DSDLayoutDesc::dsd_layout
const uint32_t * dsd_layout
Definition: iff.c:187
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:241
avio_rb16
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:763
pos
unsigned int pos
Definition: spdifenc.c:410
avformat.h
dict.h
DSD_SLFT
#define DSD_SLFT
Definition: iff.c:172
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen_template.c:38
IffDemuxContext::bpp
unsigned bpp
bits per plane to decode (differs from bits_per_coded_sample if HAM)
Definition: iff.c:117
dsd_5point1
static const uint32_t dsd_5point1[]
Definition: iff.c:183
DSD_LS
#define DSD_LS
Definition: iff.c:177
ID_TVDC
#define ID_TVDC
Definition: iff.c:86
channel_layout.h
deep_abgr
static const uint8_t deep_abgr[]
Definition: iff.c:409
pkt
static AVPacket pkt
Definition: demuxing_decoding.c:54
AV_RL32
#define AV_RL32
Definition: intreadwrite.h:146
parse_dsd_diin
static int parse_dsd_diin(AVFormatContext *s, AVStream *st, uint64_t eof)
Definition: iff.c:216
AVRational::den
int den
Denominator.
Definition: rational.h:60
ID_MDAT
#define ID_MDAT
Definition: iff.c:46
avio_read
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:625
ID_MAUD
#define ID_MAUD
Definition: iff.c:44
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
AVPacket::stream_index
int stream_index
Definition: packet.h:357
COMP_EXP
@ COMP_EXP
Definition: iff.c:105
avio_skip
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:329
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVCodecParameters::bits_per_coded_sample
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: codec_par.h:102
ID_16SV
#define ID_16SV
Definition: iff.c:43
ID_COPYRIGHT
#define ID_COPYRIGHT
Definition: iff.c:76
AV_CODEC_ID_PCM_U8
@ AV_CODEC_ID_PCM_U8
Definition: codec_id.h:306
avpriv_request_sample
#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:39
AVCodecParameters::format
int format
Definition: codec_par.h:84
IffDemuxContext::ham
unsigned ham
0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise)
Definition: iff.c:118
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
dsd_5point0
static const uint32_t dsd_5point0[]
Definition: iff.c:182
AVPacket
This structure stores compressed data.
Definition: packet.h:332
svx8_compression_type
svx8_compression_type
Definition: iff.c:102
IFF_EXTRA_VIDEO_SIZE
#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
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
av_dict_set
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
ff_id3v2_free_extra_meta
void ff_id3v2_free_extra_meta(ID3v2ExtraMeta **extra_meta)
Free memory allocated parsing special (non-text) metadata.
Definition: id3v2.c:1114
deep_rgba
static const uint8_t deep_rgba[]
Definition: iff.c:406
AVPacket::pos
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:375
AVCodecParameters::channel_layout
uint64_t channel_layout
Audio only.
Definition: codec_par.h:162
AV_CODEC_ID_PCM_S8_PLANAR
@ AV_CODEC_ID_PCM_S8_PLANAR
Definition: codec_id.h:328
bytestream.h
bytestream2_init
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:133
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:564
AVCodecParameters::bit_rate
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: codec_par.h:89
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
IffDemuxContext::transparency
unsigned transparency
transparency color index in palette
Definition: iff.c:120
dsd_channel_layout
static const DSDLayoutDesc dsd_channel_layout[]
Definition: iff.c:190
IffDemuxContext::body_end
int64_t body_end
Definition: iff.c:111
ff_iff_demuxer
AVInputFormat ff_iff_demuxer
Definition: iff.c:889
dsd_stereo
static const uint32_t dsd_stereo[]
Definition: iff.c:181
snprintf
#define snprintf
Definition: snprintf.h:34
IffDemuxContext::is_64bit
int is_64bit
chunk size is 64-bit
Definition: iff.c:109
IffDemuxContext::maud_compression
unsigned maud_compression
Definition: iff.c:115
DSDLayoutDesc
Definition: iff.c:185
av_fourcc2str
#define av_fourcc2str(fourcc)
Definition: avutil.h:348
ff_alloc_extradata
int ff_alloc_extradata(AVCodecParameters *par, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0.
Definition: utils.c:3321
min
float min
Definition: vorbis_enc_data.h:456
avio_feof
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:356
ID_ANNO
#define ID_ANNO
Definition: iff.c:73
ID_NAME
#define ID_NAME
Definition: iff.c:79