FFmpeg
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  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];
291  if (av_get_channel_layout_nb_channels(d->layout) == st->codecpar->channels &&
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);
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  ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, size);
319  if (id3v2_extra_meta) {
320  if ((ret = ff_id3v2_parse_apic(s, id3v2_extra_meta)) < 0 ||
321  (ret = ff_id3v2_parse_chapters(s, id3v2_extra_meta)) < 0) {
322  ff_id3v2_free_extra_meta(&id3v2_extra_meta);
323  return ret;
324  }
325  ff_id3v2_free_extra_meta(&id3v2_extra_meta);
326  }
327 
328  if (size < avio_tell(pb) - orig_pos) {
329  av_log(s, AV_LOG_ERROR, "id3 exceeds chunk size\n");
330  return AVERROR_INVALIDDATA;
331  }
332  break;
333 
334  case MKTAG('L','S','C','O'):
335  if (size < 2)
336  return AVERROR_INVALIDDATA;
337  config = avio_rb16(pb);
338  if (config != 0xFFFF) {
341  if (!st->codecpar->channel_layout)
342  avpriv_request_sample(s, "loudspeaker configuration %d", config);
343  }
344  break;
345  }
346 
347  avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
348  }
349 
350  return 0;
351 }
352 
354 {
355  IffDemuxContext *iff = s->priv_data;
356  AVIOContext *pb = s->pb;
357  uint32_t chunk_id;
358  uint64_t chunk_pos, data_pos, data_size;
359  int ret = AVERROR_EOF;
360 
361  while (!avio_feof(pb)) {
362  chunk_pos = avio_tell(pb);
363  if (chunk_pos >= iff->body_end)
364  return AVERROR_EOF;
365 
366  chunk_id = avio_rl32(pb);
367  data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
368  data_pos = avio_tell(pb);
369 
370  if (data_size < 1 || data_size >= INT64_MAX)
371  return AVERROR_INVALIDDATA;
372 
373  switch (chunk_id) {
374  case ID_DSTF:
375  if (!pkt) {
376  iff->body_pos = avio_tell(pb) - (iff->is_64bit ? 12 : 8);
377  iff->body_size = iff->body_end - iff->body_pos;
378  return 0;
379  }
380  ret = av_get_packet(pb, pkt, data_size);
381  if (ret < 0)
382  return ret;
383  if (data_size & 1)
384  avio_skip(pb, 1);
386  pkt->stream_index = 0;
387  pkt->duration = 588LL * s->streams[0]->codecpar->sample_rate / 44100;
388  pkt->pos = chunk_pos;
389 
390  chunk_pos = avio_tell(pb);
391  if (chunk_pos >= iff->body_end)
392  return 0;
393 
394  avio_seek(pb, chunk_pos, SEEK_SET);
395  return 0;
396 
397  case ID_FRTE:
398  if (data_size < 4)
399  return AVERROR_INVALIDDATA;
400  s->streams[0]->duration = avio_rb32(pb) * 588LL * s->streams[0]->codecpar->sample_rate / 44100;
401  break;
402  }
403 
404  avio_skip(pb, data_size - (avio_tell(pb) - data_pos) + (data_size & 1));
405  }
406 
407  return ret;
408 }
409 
410 static const uint8_t deep_rgb24[] = {0, 0, 0, 3, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
411 static const uint8_t deep_rgba[] = {0, 0, 0, 4, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
412 static const uint8_t deep_bgra[] = {0, 0, 0, 4, 0, 3, 0, 8, 0, 2, 0, 8, 0, 1, 0, 8};
413 static const uint8_t deep_argb[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 1, 0, 8, 0, 2, 0, 8};
414 static const uint8_t deep_abgr[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 3, 0, 8, 0, 2, 0, 8};
415 
417 {
418  IffDemuxContext *iff = s->priv_data;
419  AVIOContext *pb = s->pb;
420  AVStream *st;
421  uint8_t *buf;
422  uint32_t chunk_id;
423  uint64_t data_size;
424  uint32_t screenmode = 0, num, den;
425  unsigned transparency = 0;
426  unsigned masking = 0; // no mask
427  uint8_t fmt[16];
428  int fmt_size;
429 
430  st = avformat_new_stream(s, NULL);
431  if (!st)
432  return AVERROR(ENOMEM);
433 
434  st->codecpar->channels = 1;
436  iff->is_64bit = avio_rl32(pb) == ID_FRM8;
437  avio_skip(pb, iff->is_64bit ? 8 : 4);
438  // codec_tag used by ByteRun1 decoder to distinguish progressive (PBM) and interlaced (ILBM) content
439  st->codecpar->codec_tag = avio_rl32(pb);
440  if (st->codecpar->codec_tag == ID_ANIM) {
441  avio_skip(pb, 12);
442  }
443  iff->bitmap_compression = -1;
444  iff->svx8_compression = -1;
445  iff->maud_bits = -1;
446  iff->maud_compression = -1;
447 
448  while(!avio_feof(pb)) {
449  uint64_t orig_pos;
450  int res;
451  const char *metadata_tag = NULL;
452  int version, nb_comments, i;
453  chunk_id = avio_rl32(pb);
454  data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
455  orig_pos = avio_tell(pb);
456 
457  if (data_size >= INT64_MAX)
458  return AVERROR_INVALIDDATA;
459 
460  switch(chunk_id) {
461  case ID_VHDR:
463 
464  if (data_size < 14)
465  return AVERROR_INVALIDDATA;
466  avio_skip(pb, 12);
467  st->codecpar->sample_rate = avio_rb16(pb);
468  if (data_size >= 16) {
469  avio_skip(pb, 1);
470  iff->svx8_compression = avio_r8(pb);
471  }
472  break;
473 
474  case ID_MHDR:
476 
477  if (data_size < 32)
478  return AVERROR_INVALIDDATA;
479  avio_skip(pb, 4);
480  iff->maud_bits = avio_rb16(pb);
481  avio_skip(pb, 2);
482  num = avio_rb32(pb);
483  den = avio_rb16(pb);
484  if (!den)
485  return AVERROR_INVALIDDATA;
486  avio_skip(pb, 2);
487  st->codecpar->sample_rate = num / den;
488  st->codecpar->channels = avio_rb16(pb);
489  iff->maud_compression = avio_rb16(pb);
490  if (st->codecpar->channels == 1)
492  else if (st->codecpar->channels == 2)
494  break;
495 
496  case ID_ABIT:
497  case ID_BODY:
498  case ID_DBOD:
499  case ID_DSD:
500  case ID_DST:
501  case ID_MDAT:
502  iff->body_pos = avio_tell(pb);
503  iff->body_end = iff->body_pos + data_size;
504  iff->body_size = data_size;
505  if (chunk_id == ID_DST) {
506  int ret = read_dst_frame(s, NULL);
507  if (ret < 0)
508  return ret;
509  }
510  break;
511 
512  case ID_CHAN:
513  if (data_size < 4)
514  return AVERROR_INVALIDDATA;
515  if (avio_rb32(pb) < 6) {
516  st->codecpar->channels = 1;
518  } else {
519  st->codecpar->channels = 2;
521  }
522  break;
523 
524  case ID_CAMG:
525  if (data_size < 4)
526  return AVERROR_INVALIDDATA;
527  screenmode = avio_rb32(pb);
528  break;
529 
530  case ID_CMAP:
531  if (data_size < 3 || data_size > 768 || data_size % 3) {
532  av_log(s, AV_LOG_ERROR, "Invalid CMAP chunk size %"PRIu64"\n",
533  data_size);
534  return AVERROR_INVALIDDATA;
535  }
536  res = ff_alloc_extradata(st->codecpar,
537  data_size + IFF_EXTRA_VIDEO_SIZE);
538  if (res < 0)
539  return res;
540  if (avio_read(pb, st->codecpar->extradata + IFF_EXTRA_VIDEO_SIZE, data_size) < 0) {
541  av_freep(&st->codecpar->extradata);
542  st->codecpar->extradata_size = 0;
543  return AVERROR(EIO);
544  }
545  break;
546 
547  case ID_BMHD:
549  if (data_size <= 8)
550  return AVERROR_INVALIDDATA;
551  st->codecpar->width = avio_rb16(pb);
552  st->codecpar->height = avio_rb16(pb);
553  avio_skip(pb, 4); // x, y offset
555  if (data_size >= 10)
556  masking = avio_r8(pb);
557  if (data_size >= 11)
558  iff->bitmap_compression = avio_r8(pb);
559  if (data_size >= 14) {
560  avio_skip(pb, 1); // padding
561  transparency = avio_rb16(pb);
562  }
563  if (data_size >= 16) {
564  st->sample_aspect_ratio.num = avio_r8(pb);
565  st->sample_aspect_ratio.den = avio_r8(pb);
566  }
567  break;
568 
569  case ID_ANHD:
570  break;
571 
572  case ID_DPAN:
573  avio_skip(pb, 2);
574  st->duration = avio_rb16(pb);
575  break;
576 
577  case ID_DPEL:
578  if (data_size < 4 || (data_size & 3))
579  return AVERROR_INVALIDDATA;
580  if ((fmt_size = avio_read(pb, fmt, sizeof(fmt))) < 0)
581  return fmt_size;
582  if (fmt_size == sizeof(deep_rgb24) && !memcmp(fmt, deep_rgb24, sizeof(deep_rgb24)))
584  else if (fmt_size == sizeof(deep_rgba) && !memcmp(fmt, deep_rgba, sizeof(deep_rgba)))
586  else if (fmt_size == sizeof(deep_bgra) && !memcmp(fmt, deep_bgra, sizeof(deep_bgra)))
588  else if (fmt_size == sizeof(deep_argb) && !memcmp(fmt, deep_argb, sizeof(deep_argb)))
590  else if (fmt_size == sizeof(deep_abgr) && !memcmp(fmt, deep_abgr, sizeof(deep_abgr)))
592  else {
593  avpriv_request_sample(s, "color format %.16s", fmt);
594  return AVERROR_PATCHWELCOME;
595  }
596  break;
597 
598  case ID_DGBL:
600  if (data_size < 8)
601  return AVERROR_INVALIDDATA;
602  st->codecpar->width = avio_rb16(pb);
603  st->codecpar->height = avio_rb16(pb);
604  iff->bitmap_compression = avio_rb16(pb);
605  st->sample_aspect_ratio.num = avio_r8(pb);
606  st->sample_aspect_ratio.den = avio_r8(pb);
608  break;
609 
610  case ID_DLOC:
611  if (data_size < 4)
612  return AVERROR_INVALIDDATA;
613  st->codecpar->width = avio_rb16(pb);
614  st->codecpar->height = avio_rb16(pb);
615  break;
616 
617  case ID_TVDC:
618  if (data_size < sizeof(iff->tvdc))
619  return AVERROR_INVALIDDATA;
620  res = avio_read(pb, iff->tvdc, sizeof(iff->tvdc));
621  if (res < 0)
622  return res;
623  break;
624 
625  case ID_ANNO:
626  case ID_TEXT: metadata_tag = "comment"; break;
627  case ID_AUTH: metadata_tag = "artist"; break;
628  case ID_COPYRIGHT: metadata_tag = "copyright"; break;
629  case ID_NAME: metadata_tag = "title"; break;
630 
631  /* DSD tags */
632 
633  case MKTAG('F','V','E','R'):
634  if (data_size < 4)
635  return AVERROR_INVALIDDATA;
636  version = avio_rb32(pb);
637  av_log(s, AV_LOG_DEBUG, "DSIFF v%d.%d.%d.%d\n",version >> 24, (version >> 16) & 0xFF, (version >> 8) & 0xFF, version & 0xFF);
639  break;
640 
641  case MKTAG('D','I','I','N'):
642  res = parse_dsd_diin(s, st, orig_pos + data_size);
643  if (res < 0)
644  return res;
645  break;
646 
647  case MKTAG('P','R','O','P'):
648  if (data_size < 4)
649  return AVERROR_INVALIDDATA;
650  if (avio_rl32(pb) != MKTAG('S','N','D',' ')) {
651  avpriv_request_sample(s, "unknown property type");
652  break;
653  }
654  res = parse_dsd_prop(s, st, orig_pos + data_size);
655  if (res < 0)
656  return res;
657  break;
658 
659  case MKTAG('C','O','M','T'):
660  if (data_size < 2)
661  return AVERROR_INVALIDDATA;
662  nb_comments = avio_rb16(pb);
663  for (i = 0; i < nb_comments; i++) {
664  int year, mon, day, hour, min, type, ref;
665  char tmp[24];
666  const char *tag;
667  int metadata_size;
668 
669  year = avio_rb16(pb);
670  mon = avio_r8(pb);
671  day = avio_r8(pb);
672  hour = avio_r8(pb);
673  min = avio_r8(pb);
674  snprintf(tmp, sizeof(tmp), "%04d-%02d-%02d %02d:%02d", year, mon, day, hour, min);
675  av_dict_set(&st->metadata, "comment_time", tmp, 0);
676 
677  type = avio_rb16(pb);
678  ref = avio_rb16(pb);
679  switch (type) {
680  case 1:
681  if (!i)
682  tag = "channel_comment";
683  else {
684  snprintf(tmp, sizeof(tmp), "channel%d_comment", ref);
685  tag = tmp;
686  }
687  break;
688  case 2:
689  tag = ref < FF_ARRAY_ELEMS(dsd_source_comment) ? dsd_source_comment[ref] : "source_comment";
690  break;
691  case 3:
693  break;
694  default:
695  tag = "comment";
696  }
697 
698  metadata_size = avio_rb32(pb);
699  if ((res = get_metadata(s, tag, metadata_size)) < 0) {
700  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", tag);
701  return res;
702  }
703 
704  if (metadata_size & 1)
705  avio_skip(pb, 1);
706  }
707  break;
708  }
709 
710  if (metadata_tag) {
711  if ((res = get_metadata(s, metadata_tag, data_size)) < 0) {
712  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
713  return res;
714  }
715  }
716  avio_skip(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1));
717  }
718 
719  if (st->codecpar->codec_tag == ID_ANIM)
720  avio_seek(pb, 12, SEEK_SET);
721  else
722  avio_seek(pb, iff->body_pos, SEEK_SET);
723 
724  switch(st->codecpar->codec_type) {
725  case AVMEDIA_TYPE_AUDIO:
726  avpriv_set_pts_info(st, 32, 1, st->codecpar->sample_rate);
727 
728  if (st->codecpar->codec_tag == ID_16SV)
730  else if (st->codecpar->codec_tag == ID_MAUD) {
731  if (iff->maud_bits == 8 && !iff->maud_compression) {
733  } else if (iff->maud_bits == 16 && !iff->maud_compression) {
735  } else if (iff->maud_bits == 8 && iff->maud_compression == 2) {
737  } else if (iff->maud_bits == 8 && iff->maud_compression == 3) {
739  } else {
740  avpriv_request_sample(s, "compression %d and bit depth %d", iff->maud_compression, iff->maud_bits);
741  return AVERROR_PATCHWELCOME;
742  }
743  } else if (st->codecpar->codec_tag != ID_DSD &&
744  st->codecpar->codec_tag != ID_DST) {
745  switch (iff->svx8_compression) {
746  case COMP_NONE:
748  break;
749  case COMP_FIB:
751  break;
752  case COMP_EXP:
754  break;
755  default:
757  "Unknown SVX8 compression method '%d'\n", iff->svx8_compression);
758  return -1;
759  }
760  }
761 
765  if ((st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) && st->codecpar->block_align <= 0)
766  return AVERROR_INVALIDDATA;
767  break;
768 
769  case AVMEDIA_TYPE_VIDEO:
770  iff->bpp = st->codecpar->bits_per_coded_sample;
771  if (st->codecpar->codec_tag == ID_ANIM)
772  avpriv_set_pts_info(st, 32, 1, 60);
773  if ((screenmode & 0x800 /* Hold And Modify */) && iff->bpp <= 8) {
774  iff->ham = iff->bpp > 6 ? 6 : 4;
776  }
777  iff->flags = (screenmode & 0x80 /* Extra HalfBrite */) && iff->bpp <= 8;
778  iff->masking = masking;
779  iff->transparency = transparency;
780 
781  if (!st->codecpar->extradata) {
783  if (ret < 0)
784  return ret;
785  }
787  buf = st->codecpar->extradata;
788  bytestream_put_be16(&buf, IFF_EXTRA_VIDEO_SIZE);
789  bytestream_put_byte(&buf, iff->bitmap_compression);
790  bytestream_put_byte(&buf, iff->bpp);
791  bytestream_put_byte(&buf, iff->ham);
792  bytestream_put_byte(&buf, iff->flags);
793  bytestream_put_be16(&buf, iff->transparency);
794  bytestream_put_byte(&buf, iff->masking);
795  bytestream_put_buffer(&buf, iff->tvdc, sizeof(iff->tvdc));
797  break;
798  default:
799  return -1;
800  }
801 
802  return 0;
803 }
804 
805 static unsigned get_anim_duration(uint8_t *buf, int size)
806 {
807  GetByteContext gb;
808 
809  bytestream2_init(&gb, buf, size);
810  bytestream2_skip(&gb, 4);
811  while (bytestream2_get_bytes_left(&gb) > 8) {
812  unsigned chunk = bytestream2_get_le32(&gb);
813  unsigned size = bytestream2_get_be32(&gb);
814 
815  if (chunk == ID_ANHD) {
816  if (size < 40)
817  break;
818  bytestream2_skip(&gb, 14);
819  return bytestream2_get_be32(&gb);
820  } else {
821  bytestream2_skip(&gb, size + size & 1);
822  }
823  }
824  return 10;
825 }
826 
828  AVPacket *pkt)
829 {
830  IffDemuxContext *iff = s->priv_data;
831  AVIOContext *pb = s->pb;
832  AVStream *st = s->streams[0];
833  int ret;
834  int64_t pos = avio_tell(pb);
835 
836  if (avio_feof(pb))
837  return AVERROR_EOF;
838  if (st->codecpar->codec_tag != ID_ANIM && pos >= iff->body_end)
839  return AVERROR_EOF;
840 
841  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
842  if (st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) {
843  ret = av_get_packet(pb, pkt, FFMIN(iff->body_end - pos, 1024 * st->codecpar->block_align));
844  } else if (st->codecpar->codec_tag == ID_DST) {
845  return read_dst_frame(s, pkt);
846  } else {
847  if (iff->body_size > INT_MAX || !iff->body_size)
848  return AVERROR_INVALIDDATA;
849  ret = av_get_packet(pb, pkt, iff->body_size);
850  }
851  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
852  st->codecpar->codec_tag == ID_ANIM) {
853  uint64_t data_size, orig_pos;
854  uint32_t chunk_id, chunk_id2;
855 
856  while (!avio_feof(pb)) {
857  if (avio_feof(pb))
858  return AVERROR_EOF;
859 
860  orig_pos = avio_tell(pb);
861  chunk_id = avio_rl32(pb);
862  data_size = avio_rb32(pb);
863  chunk_id2 = avio_rl32(pb);
864 
865  if (chunk_id == ID_FORM &&
866  chunk_id2 == ID_ILBM) {
867  avio_skip(pb, -4);
868  break;
869  } else if (chunk_id == ID_FORM &&
870  chunk_id2 == ID_ANIM) {
871  continue;
872  } else {
873  avio_skip(pb, data_size);
874  }
875  }
876  ret = av_get_packet(pb, pkt, data_size);
877  pkt->pos = orig_pos;
879  if (pos == 12)
881  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
882  st->codecpar->codec_tag != ID_ANIM) {
883  if (iff->body_size > INT_MAX || !iff->body_size)
884  return AVERROR_INVALIDDATA;
885  ret = av_get_packet(pb, pkt, iff->body_size);
886  pkt->pos = pos;
887  if (pos == iff->body_pos)
889  } else {
890  av_assert0(0);
891  }
892 
893  if (ret < 0)
894  return ret;
895  pkt->stream_index = 0;
896  return ret;
897 }
898 
900  .name = "iff",
901  .long_name = NULL_IF_CONFIG_SMALL("IFF (Interchange File Format)"),
902  .priv_data_size = sizeof(IffDemuxContext),
907 };
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:475
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:724
deep_argb
static const uint8_t deep_argb[]
Definition: iff.c:413
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:57
AV_CODEC_ID_8SVX_EXP
@ AV_CODEC_ID_8SVX_EXP
Definition: codec_id.h:477
AV_CH_LAYOUT_MONO
#define AV_CH_LAYOUT_MONO
Definition: channel_layout.h:90
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:373
AV_CODEC_ID_PCM_S16BE_PLANAR
@ AV_CODEC_ID_PCM_S16BE_PLANAR
Definition: codec_id.h:344
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:1135
deep_bgra
static const uint8_t deep_bgra[]
Definition: iff.c:412
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:391
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:805
IffDemuxContext::body_size
uint32_t body_size
Definition: iff.c:112
ID_ILBM
#define ID_ILBM
Definition: iff.c:52
tf_sess_config.config
config
Definition: tf_sess_config.py:33
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:425
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:458
bytestream2_skip
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
Definition: bytestream.h:168
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:186
AV_CODEC_ID_PCM_S16BE
@ AV_CODEC_ID_PCM_S16BE
Definition: codec_id.h:315
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:504
AVFMT_GENERIC_INDEX
#define AVFMT_GENERIC_INDEX
Use generic index building code.
Definition: avformat.h:468
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:900
AV_CODEC_ID_8SVX_FIB
@ AV_CODEC_ID_8SVX_FIB
Definition: codec_id.h:478
AVRational::num
int num
Numerator.
Definition: rational.h:59
AV_CH_LAYOUT_STEREO
#define AV_CH_LAYOUT_STEREO
Definition: channel_layout.h:91
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:249
ff_id3v2_parse_chapters
int ff_id3v2_parse_chapters(AVFormatContext *s, ID3v2ExtraMeta *cur)
Create chapters for all CHAP tags found in the ID3v2 header.
Definition: id3v2.c:1188
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:72
av_get_bits_per_sample
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:591
avassert.h
avio_rb32
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:790
pkt
AVPacket * pkt
Definition: movenc.c:59
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
AVInputFormat
Definition: avformat.h:638
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
AVCodecTag
Definition: internal.h:50
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:643
iff_read_header
static int iff_read_header(AVFormatContext *s)
Definition: iff.c:416
AVProbeData::buf
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:448
iff_read_packet
static int iff_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: iff.c:827
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:201
ID_8SVX
#define ID_8SVX
Definition: iff.c:42
AV_CODEC_ID_PCM_MULAW
@ AV_CODEC_ID_PCM_MULAW
Definition: codec_id.h:320
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:1109
AV_CODEC_ID_PCM_ALAW
@ AV_CODEC_ID_PCM_ALAW
Definition: codec_id.h:321
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1004
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:64
AV_CODEC_ID_DST
@ AV_CODEC_ID_DST
Definition: codec_id.h:504
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:1157
avio_rb64
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:937
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:101
AVProbeData
This structure contains the data a format has to probe a file.
Definition: avformat.h:446
AVStream::metadata
AVDictionary * metadata
Definition: avformat.h:915
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:226
bytestream2_get_bytes_left
static av_always_inline int bytestream2_get_bytes_left(GetByteContext *g)
Definition: bytestream.h:158
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
avio_rl32
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:759
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:374
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:117
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:357
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:497
ID_ANIM
#define ID_ANIM
Definition: iff.c:66
size
int size
Definition: twinvq_data.h:10344
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:913
read_dst_frame
static int read_dst_frame(AVFormatContext *s, AVPacket *pkt)
Definition: iff.c:353
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:632
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:379
version
version
Definition: libkvazaar.c:307
ID_FRM8
#define ID_FRM8
Definition: iff.c:72
deep_rgb24
static const uint8_t deep_rgb24[]
Definition: iff.c:410
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:100
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:372
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:48
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
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
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
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:196
ID_ANHD
#define ID_ANHD
Definition: iff.c:67
tag
uint32_t tag
Definition: movenc.c:1595
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:857
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:260
avio_rb16
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:775
pos
unsigned int pos
Definition: spdifenc.c:412
avformat.h
dict.h
DSD_SLFT
#define DSD_SLFT
Definition: iff.c:172
AV_RL32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:92
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:414
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:641
ID_MAUD
#define ID_MAUD
Definition: iff.c:44
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
avpriv_set_pts_info
void avpriv_set_pts_info(AVStream *st, 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:1146
AVPacket::stream_index
int stream_index
Definition: packet.h:375
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:347
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:319
avpriv_request_sample
#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:37
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:350
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:1141
deep_rgba
static const uint8_t deep_rgba[]
Definition: iff.c:411
AVPacket::pos
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:393
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:341
d
d
Definition: ffmpeg_filter.c:156
bytestream.h
bytestream2_init
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:137
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
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:61
MKTAG
#define MKTAG(a, b, c, d)
Definition: macros.h:55
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
dsd_stereo
static const uint32_t dsd_stereo[]
Definition: iff.c:181
snprintf
#define snprintf
Definition: snprintf.h:34
ff_iff_demuxer
const AVInputFormat ff_iff_demuxer
Definition: iff.c:899
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:451
min
float min
Definition: vorbis_enc_data.h:429
avio_feof
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:375
ID_ANNO
#define ID_ANNO
Definition: iff.c:73
ID_NAME
#define ID_NAME
Definition: iff.c:79