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 "libavutil/mem.h"
38 #include "libavcodec/bytestream.h"
39 #include "avformat.h"
40 #include "demux.h"
41 #include "id3v2.h"
42 #include "internal.h"
43 
44 #define ID_8SVX MKTAG('8','S','V','X')
45 #define ID_16SV MKTAG('1','6','S','V')
46 #define ID_MAUD MKTAG('M','A','U','D')
47 #define ID_MHDR MKTAG('M','H','D','R')
48 #define ID_MDAT MKTAG('M','D','A','T')
49 #define ID_VHDR MKTAG('V','H','D','R')
50 #define ID_ATAK MKTAG('A','T','A','K')
51 #define ID_RLSE MKTAG('R','L','S','E')
52 #define ID_CHAN MKTAG('C','H','A','N')
53 #define ID_PBM MKTAG('P','B','M',' ')
54 #define ID_ILBM MKTAG('I','L','B','M')
55 #define ID_BMHD MKTAG('B','M','H','D')
56 #define ID_DGBL MKTAG('D','G','B','L')
57 #define ID_CAMG MKTAG('C','A','M','G')
58 #define ID_CMAP MKTAG('C','M','A','P')
59 #define ID_ACBM MKTAG('A','C','B','M')
60 #define ID_DEEP MKTAG('D','E','E','P')
61 #define ID_RGB8 MKTAG('R','G','B','8')
62 #define ID_RGBN MKTAG('R','G','B','N')
63 #define ID_DSD MKTAG('D','S','D',' ')
64 #define ID_DST MKTAG('D','S','T',' ')
65 #define ID_DSTC MKTAG('D','S','T','C')
66 #define ID_DSTF MKTAG('D','S','T','F')
67 #define ID_FRTE MKTAG('F','R','T','E')
68 #define ID_ANIM MKTAG('A','N','I','M')
69 #define ID_ANHD MKTAG('A','N','H','D')
70 #define ID_DLTA MKTAG('D','L','T','A')
71 #define ID_DPAN MKTAG('D','P','A','N')
72 
73 #define ID_FORM MKTAG('F','O','R','M')
74 #define ID_FRM8 MKTAG('F','R','M','8')
75 #define ID_ANNO MKTAG('A','N','N','O')
76 #define ID_AUTH MKTAG('A','U','T','H')
77 #define ID_CHRS MKTAG('C','H','R','S')
78 #define ID_COPYRIGHT MKTAG('(','c',')',' ')
79 #define ID_CSET MKTAG('C','S','E','T')
80 #define ID_FVER MKTAG('F','V','E','R')
81 #define ID_NAME MKTAG('N','A','M','E')
82 #define ID_TEXT MKTAG('T','E','X','T')
83 #define ID_ABIT MKTAG('A','B','I','T')
84 #define ID_BODY MKTAG('B','O','D','Y')
85 #define ID_DBOD MKTAG('D','B','O','D')
86 #define ID_DPEL MKTAG('D','P','E','L')
87 #define ID_DLOC MKTAG('D','L','O','C')
88 #define ID_TVDC MKTAG('T','V','D','C')
89 
90 #define LEFT 2
91 #define RIGHT 4
92 #define STEREO 6
93 
94 /**
95  * This number of bytes if added at the beginning of each AVPacket
96  * which contain additional information about video properties
97  * which has to be shared between demuxer and decoder.
98  * This number may change between frames, e.g. the demuxer might
99  * set it to smallest possible size of 2 to indicate that there's
100  * no extradata changing in this frame.
101  */
102 #define IFF_EXTRA_VIDEO_SIZE 41
103 
104 typedef enum {
109 
110 typedef struct IffDemuxContext {
111  int is_64bit; ///< chunk size is 64-bit
112  int64_t body_pos;
113  int64_t body_end;
114  uint32_t body_size;
116  unsigned maud_bits;
118  unsigned bitmap_compression; ///< delta compression method used
119  unsigned bpp; ///< bits per plane to decode (differs from bits_per_coded_sample if HAM)
120  unsigned ham; ///< 0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise)
121  unsigned flags; ///< 1 for EHB, 0 is no extra half darkening
122  unsigned transparency; ///< transparency color index in palette
123  unsigned masking; ///< masking method used
124  uint8_t tvdc[32]; ///< TVDC lookup table
125  int64_t pts;
127 
128 /* Metadata string read */
130  const char *const tag,
131  const unsigned data_size)
132 {
133  uint8_t *buf = ((data_size + 1) == 0) ? NULL : av_malloc(data_size + 1);
134 
135  if (!buf)
136  return AVERROR(ENOMEM);
137 
138  if (avio_read(s->pb, buf, data_size) != data_size) {
139  av_free(buf);
140  return AVERROR(EIO);
141  }
142  buf[data_size] = 0;
143  av_dict_set(&s->metadata, tag, buf, AV_DICT_DONT_STRDUP_VAL);
144  return 0;
145 }
146 
147 static int iff_probe(const AVProbeData *p)
148 {
149  const uint8_t *d = p->buf;
150 
151  if ( (AV_RL32(d) == ID_FORM &&
152  (AV_RL32(d+8) == ID_8SVX ||
153  AV_RL32(d+8) == ID_16SV ||
154  AV_RL32(d+8) == ID_MAUD ||
155  AV_RL32(d+8) == ID_PBM ||
156  AV_RL32(d+8) == ID_ACBM ||
157  AV_RL32(d+8) == ID_DEEP ||
158  AV_RL32(d+8) == ID_ILBM ||
159  AV_RL32(d+8) == ID_RGB8 ||
160  AV_RL32(d+8) == ID_ANIM ||
161  AV_RL32(d+8) == ID_RGBN)) ||
162  (AV_RL32(d) == ID_FRM8 && AV_RL32(d+12) == ID_DSD))
163  return AVPROBE_SCORE_MAX;
164  return 0;
165 }
166 
167 static const AVCodecTag dsd_codec_tags[] = {
169  { AV_CODEC_ID_DST, ID_DST },
170  { AV_CODEC_ID_NONE, 0 },
171 };
172 
173 
174 #define DSD_SLFT MKTAG('S','L','F','T')
175 #define DSD_SRGT MKTAG('S','R','G','T')
176 #define DSD_MLFT MKTAG('M','L','F','T')
177 #define DSD_MRGT MKTAG('M','R','G','T')
178 #define DSD_C MKTAG('C',' ',' ',' ')
179 #define DSD_LS MKTAG('L','S',' ',' ')
180 #define DSD_RS MKTAG('R','S',' ',' ')
181 #define DSD_LFE MKTAG('L','F','E',' ')
182 
183 static const uint32_t dsd_stereo[] = { DSD_SLFT, DSD_SRGT };
184 static const uint32_t dsd_5point0[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LS, DSD_RS };
185 static const uint32_t dsd_5point1[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LFE, DSD_LS, DSD_RS };
186 
187 typedef struct {
189  const uint32_t * dsd_layout;
190 } DSDLayoutDesc;
191 
196 };
197 
200  { 0 }, { 0 },
202 };
203 
204 static const char * dsd_source_comment[] = {
205  "dsd_source_comment",
206  "analogue_source_comment",
207  "pcm_source_comment",
208 };
209 
210 static const char * dsd_history_comment[] = {
211  "general_remark",
212  "operator_name",
213  "creating_machine",
214  "timezone",
215  "file_revision"
216 };
217 
218 static int parse_dsd_diin(AVFormatContext *s, AVStream *st, uint64_t eof)
219 {
220  AVIOContext *pb = s->pb;
221 
222  while (av_sat_add64(avio_tell(pb), 12) <= eof && !avio_feof(pb)) {
223  uint32_t tag = avio_rl32(pb);
224  uint64_t size = avio_rb64(pb);
225  uint64_t orig_pos = avio_tell(pb);
226  const char * metadata_tag = NULL;
227 
228  if (size >= INT64_MAX)
229  return AVERROR_INVALIDDATA;
230 
231  switch(tag) {
232  case MKTAG('D','I','A','R'): metadata_tag = "artist"; break;
233  case MKTAG('D','I','T','I'): metadata_tag = "title"; break;
234  }
235 
236  if (metadata_tag && size > 4) {
237  unsigned int tag_size = avio_rb32(pb);
238  int ret = get_metadata(s, metadata_tag, FFMIN(tag_size, size - 4));
239  if (ret < 0) {
240  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
241  return ret;
242  }
243  }
244 
245  avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
246  }
247 
248  return 0;
249 }
250 
251 static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
252 {
253  AVIOContext *pb = s->pb;
254  char abss[24];
255  int hour, min, sec, i, ret, config;
256  int dsd_layout[6];
257  ID3v2ExtraMeta *id3v2_extra_meta;
258 
259  while (av_sat_add64(avio_tell(pb), 12) <= eof && !avio_feof(pb)) {
260  uint32_t tag = avio_rl32(pb);
261  uint64_t size = avio_rb64(pb);
262  uint64_t orig_pos = avio_tell(pb);
263 
264  if (size >= INT64_MAX)
265  return AVERROR_INVALIDDATA;
266 
267  switch(tag) {
268  case MKTAG('A','B','S','S'):
269  if (size < 8)
270  return AVERROR_INVALIDDATA;
271  hour = avio_rb16(pb);
272  min = avio_r8(pb);
273  sec = avio_r8(pb);
274  snprintf(abss, sizeof(abss), "%02dh:%02dm:%02ds:%d", hour, min, sec, avio_rb32(pb));
275  av_dict_set(&st->metadata, "absolute_start_time", abss, 0);
276  break;
277 
278  case MKTAG('C','H','N','L'):
279  if (size < 2)
280  return AVERROR_INVALIDDATA;
283  if (size < 2 + st->codecpar->ch_layout.nb_channels * 4)
284  return AVERROR_INVALIDDATA;
285  if (st->codecpar->ch_layout.nb_channels > FF_ARRAY_ELEMS(dsd_layout)) {
286  avpriv_request_sample(s, "channel layout");
287  break;
288  }
289  for (i = 0; i < st->codecpar->ch_layout.nb_channels; i++)
290  dsd_layout[i] = avio_rl32(pb);
291  for (i = 0; i < FF_ARRAY_ELEMS(dsd_channel_layout); i++) {
292  const DSDLayoutDesc * d = &dsd_channel_layout[i];
293  if (d->layout.nb_channels == st->codecpar->ch_layout.nb_channels &&
294  !memcmp(d->dsd_layout, dsd_layout, d->layout.nb_channels * sizeof(uint32_t))) {
295  st->codecpar->ch_layout = d->layout;
296  break;
297  }
298  }
299  break;
300 
301  case MKTAG('C','M','P','R'):
302  if (size < 4)
303  return AVERROR_INVALIDDATA;
304  st->codecpar->codec_tag = tag = avio_rl32(pb);
306  if (!st->codecpar->codec_id) {
307  av_log(s, AV_LOG_ERROR, "'%s' compression is not supported\n",
308  av_fourcc2str(tag));
309  return AVERROR_PATCHWELCOME;
310  }
311  break;
312 
313  case MKTAG('F','S',' ',' '):
314  if (size < 4)
315  return AVERROR_INVALIDDATA;
316  st->codecpar->sample_rate = avio_rb32(pb) / 8;
317  break;
318 
319  case MKTAG('I','D','3',' '):
320  ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, size);
321  if (id3v2_extra_meta) {
322  if ((ret = ff_id3v2_parse_apic(s, id3v2_extra_meta)) < 0 ||
323  (ret = ff_id3v2_parse_chapters(s, id3v2_extra_meta)) < 0) {
324  ff_id3v2_free_extra_meta(&id3v2_extra_meta);
325  return ret;
326  }
327  ff_id3v2_free_extra_meta(&id3v2_extra_meta);
328  }
329 
330  if (size < avio_tell(pb) - orig_pos) {
331  av_log(s, AV_LOG_ERROR, "id3 exceeds chunk size\n");
332  return AVERROR_INVALIDDATA;
333  }
334  break;
335 
336  case MKTAG('L','S','C','O'):
337  if (size < 2)
338  return AVERROR_INVALIDDATA;
339  config = avio_rb16(pb);
340  if (config != 0xFFFF) {
343  if (!st->codecpar->ch_layout.nb_channels)
344  avpriv_request_sample(s, "loudspeaker configuration %d", config);
345  }
346  break;
347  }
348 
349  avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
350  }
351 
352  return 0;
353 }
354 
356 {
357  IffDemuxContext *iff = s->priv_data;
358  AVIOContext *pb = s->pb;
359  uint32_t chunk_id;
360  uint64_t chunk_pos, data_pos, data_size;
361  int ret = AVERROR_EOF;
362 
363  while (!avio_feof(pb)) {
364  chunk_pos = avio_tell(pb);
365  if (chunk_pos >= iff->body_end)
366  return AVERROR_EOF;
367 
368  chunk_id = avio_rl32(pb);
369  data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
370  data_pos = avio_tell(pb);
371 
372  if (data_size < 1 || data_size >= INT64_MAX)
373  return AVERROR_INVALIDDATA;
374 
375  switch (chunk_id) {
376  case ID_DSTF:
377  if (!pkt) {
378  iff->body_pos = avio_tell(pb) - (iff->is_64bit ? 12 : 8);
379  iff->body_size = iff->body_end - iff->body_pos;
380  return 0;
381  }
382  ret = av_get_packet(pb, pkt, data_size);
383  if (ret < 0)
384  return ret;
385  if (data_size & 1)
386  avio_skip(pb, 1);
388  pkt->stream_index = 0;
389  pkt->duration = s->streams[0]->codecpar->sample_rate / 75;
390  pkt->pos = chunk_pos;
391 
392  chunk_pos = avio_tell(pb);
393  if (chunk_pos >= iff->body_end)
394  return 0;
395 
396  avio_seek(pb, chunk_pos, SEEK_SET);
397  return 0;
398 
399  case ID_FRTE:
400  if (data_size < 4)
401  return AVERROR_INVALIDDATA;
402  s->streams[0]->duration = avio_rb32(pb) * (uint64_t)s->streams[0]->codecpar->sample_rate / 75;
403 
404  break;
405  }
406 
407  avio_skip(pb, data_size - (avio_tell(pb) - data_pos) + (data_size & 1));
408  }
409 
410  return ret;
411 }
412 
413 static const uint8_t deep_rgb24[] = {0, 0, 0, 3, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
414 static const uint8_t deep_rgba[] = {0, 0, 0, 4, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
415 static const uint8_t deep_bgra[] = {0, 0, 0, 4, 0, 3, 0, 8, 0, 2, 0, 8, 0, 1, 0, 8};
416 static const uint8_t deep_argb[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 1, 0, 8, 0, 2, 0, 8};
417 static const uint8_t deep_abgr[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 3, 0, 8, 0, 2, 0, 8};
418 
420 {
421  IffDemuxContext *iff = s->priv_data;
422  AVIOContext *pb = s->pb;
423  AVStream *st;
424  uint8_t *buf;
425  uint32_t chunk_id;
426  uint64_t data_size;
427  uint32_t screenmode = 0, num, den;
428  unsigned transparency = 0;
429  unsigned masking = 0; // no mask
430  uint8_t fmt[16];
431  int fmt_size;
432 
433  st = avformat_new_stream(s, NULL);
434  if (!st)
435  return AVERROR(ENOMEM);
436 
438  iff->is_64bit = avio_rl32(pb) == ID_FRM8;
439  avio_skip(pb, iff->is_64bit ? 8 : 4);
440  // codec_tag used by ByteRun1 decoder to distinguish progressive (PBM) and interlaced (ILBM) content
441  st->codecpar->codec_tag = avio_rl32(pb);
442  if (st->codecpar->codec_tag == ID_ANIM) {
443  avio_skip(pb, 12);
444  }
445  iff->bitmap_compression = -1;
446  iff->svx8_compression = -1;
447  iff->maud_bits = -1;
448  iff->maud_compression = -1;
449 
450  while(!avio_feof(pb)) {
451  uint64_t orig_pos;
452  int res;
453  const char *metadata_tag = NULL;
454  int version, nb_comments, i;
455  chunk_id = avio_rl32(pb);
456  data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
457  orig_pos = avio_tell(pb);
458 
459  if (data_size >= INT64_MAX)
460  return AVERROR_INVALIDDATA;
461 
462  switch(chunk_id) {
463  case ID_VHDR:
465 
466  if (data_size < 14)
467  return AVERROR_INVALIDDATA;
468  avio_skip(pb, 12);
469  st->codecpar->sample_rate = avio_rb16(pb);
470  if (data_size >= 16) {
471  avio_skip(pb, 1);
472  iff->svx8_compression = avio_r8(pb);
473  }
474  break;
475 
476  case ID_MHDR:
478 
479  if (data_size < 32)
480  return AVERROR_INVALIDDATA;
481  avio_skip(pb, 4);
482  iff->maud_bits = avio_rb16(pb);
483  avio_skip(pb, 2);
484  num = avio_rb32(pb);
485  den = avio_rb16(pb);
486  if (!den)
487  return AVERROR_INVALIDDATA;
488  avio_skip(pb, 2);
489  st->codecpar->sample_rate = num / den;
492  iff->maud_compression = avio_rb16(pb);
493  if (st->codecpar->ch_layout.nb_channels == 1)
495  else if (st->codecpar->ch_layout.nb_channels == 2)
497  break;
498 
499  case ID_ABIT:
500  case ID_BODY:
501  case ID_DBOD:
502  case ID_DSD:
503  case ID_DST:
504  case ID_MDAT:
505  iff->body_pos = avio_tell(pb);
506  if (iff->body_pos < 0 || iff->body_pos + data_size > INT64_MAX)
507  return AVERROR_INVALIDDATA;
508 
509  iff->body_end = iff->body_pos + data_size;
510  iff->body_size = data_size;
511  if (chunk_id == ID_DST) {
512  int ret = read_dst_frame(s, NULL);
513  if (ret < 0)
514  return ret;
515  }
516  break;
517 
518  case ID_CHAN:
519  if (data_size < 4)
520  return AVERROR_INVALIDDATA;
521  if (avio_rb32(pb) < 6) {
523  } else {
525  }
526  break;
527 
528  case ID_CAMG:
529  if (data_size < 4)
530  return AVERROR_INVALIDDATA;
531  screenmode = avio_rb32(pb);
532  break;
533 
534  case ID_CMAP:
535  if (data_size < 3 || data_size > 768 || data_size % 3) {
536  av_log(s, AV_LOG_ERROR, "Invalid CMAP chunk size %"PRIu64"\n",
537  data_size);
538  return AVERROR_INVALIDDATA;
539  }
540  res = ff_alloc_extradata(st->codecpar,
541  data_size + IFF_EXTRA_VIDEO_SIZE);
542  if (res < 0)
543  return res;
544  if (avio_read(pb, st->codecpar->extradata + IFF_EXTRA_VIDEO_SIZE, data_size) < 0) {
545  av_freep(&st->codecpar->extradata);
546  st->codecpar->extradata_size = 0;
547  return AVERROR(EIO);
548  }
549  break;
550 
551  case ID_BMHD:
553  if (data_size <= 8)
554  return AVERROR_INVALIDDATA;
555  st->codecpar->width = avio_rb16(pb);
556  st->codecpar->height = avio_rb16(pb);
557  avio_skip(pb, 4); // x, y offset
559  if (data_size >= 10)
560  masking = avio_r8(pb);
561  if (data_size >= 11)
562  iff->bitmap_compression = avio_r8(pb);
563  if (data_size >= 14) {
564  avio_skip(pb, 1); // padding
565  transparency = avio_rb16(pb);
566  }
567  if (data_size >= 16) {
568  st->sample_aspect_ratio.num = avio_r8(pb);
569  st->sample_aspect_ratio.den = avio_r8(pb);
570  }
571  break;
572 
573  case ID_ANHD:
574  break;
575 
576  case ID_DPAN:
577  avio_skip(pb, 2);
578  st->duration = avio_rb16(pb);
579  break;
580 
581  case ID_DPEL:
582  if (data_size < 4 || (data_size & 3))
583  return AVERROR_INVALIDDATA;
584  if ((fmt_size = avio_read(pb, fmt, sizeof(fmt))) < 0)
585  return fmt_size;
586  if (fmt_size == sizeof(deep_rgb24) && !memcmp(fmt, deep_rgb24, sizeof(deep_rgb24)))
588  else if (fmt_size == sizeof(deep_rgba) && !memcmp(fmt, deep_rgba, sizeof(deep_rgba)))
590  else if (fmt_size == sizeof(deep_bgra) && !memcmp(fmt, deep_bgra, sizeof(deep_bgra)))
592  else if (fmt_size == sizeof(deep_argb) && !memcmp(fmt, deep_argb, sizeof(deep_argb)))
594  else if (fmt_size == sizeof(deep_abgr) && !memcmp(fmt, deep_abgr, sizeof(deep_abgr)))
596  else {
597  avpriv_request_sample(s, "color format %.16s", fmt);
598  return AVERROR_PATCHWELCOME;
599  }
600  break;
601 
602  case ID_DGBL:
604  if (data_size < 8)
605  return AVERROR_INVALIDDATA;
606  st->codecpar->width = avio_rb16(pb);
607  st->codecpar->height = avio_rb16(pb);
608  iff->bitmap_compression = avio_rb16(pb);
609  st->sample_aspect_ratio.num = avio_r8(pb);
610  st->sample_aspect_ratio.den = avio_r8(pb);
612  break;
613 
614  case ID_DLOC:
615  if (data_size < 4)
616  return AVERROR_INVALIDDATA;
617  st->codecpar->width = avio_rb16(pb);
618  st->codecpar->height = avio_rb16(pb);
619  break;
620 
621  case ID_TVDC:
622  if (data_size < sizeof(iff->tvdc))
623  return AVERROR_INVALIDDATA;
624  res = avio_read(pb, iff->tvdc, sizeof(iff->tvdc));
625  if (res < 0)
626  return res;
627  break;
628 
629  case ID_ANNO:
630  case ID_TEXT: metadata_tag = "comment"; break;
631  case ID_AUTH: metadata_tag = "artist"; break;
632  case ID_COPYRIGHT: metadata_tag = "copyright"; break;
633  case ID_NAME: metadata_tag = "title"; break;
634 
635  /* DSD tags */
636 
637  case MKTAG('F','V','E','R'):
638  if (data_size < 4)
639  return AVERROR_INVALIDDATA;
640  version = avio_rb32(pb);
641  av_log(s, AV_LOG_DEBUG, "DSIFF v%d.%d.%d.%d\n",version >> 24, (version >> 16) & 0xFF, (version >> 8) & 0xFF, version & 0xFF);
643  break;
644 
645  case MKTAG('D','I','I','N'):
646  res = parse_dsd_diin(s, st, orig_pos + data_size);
647  if (res < 0)
648  return res;
649  break;
650 
651  case MKTAG('P','R','O','P'):
652  if (data_size < 4)
653  return AVERROR_INVALIDDATA;
654  if (avio_rl32(pb) != MKTAG('S','N','D',' ')) {
655  avpriv_request_sample(s, "unknown property type");
656  break;
657  }
658  res = parse_dsd_prop(s, st, orig_pos + data_size);
659  if (res < 0)
660  return res;
661  break;
662 
663  case MKTAG('C','O','M','T'):
664  if (data_size < 2)
665  return AVERROR_INVALIDDATA;
666  nb_comments = avio_rb16(pb);
667  for (i = 0; i < nb_comments; i++) {
668  int year, mon, day, hour, min, type, ref;
669  char tmp[24];
670  const char *tag;
671  int metadata_size;
672 
673  year = avio_rb16(pb);
674  mon = avio_r8(pb);
675  day = avio_r8(pb);
676  hour = avio_r8(pb);
677  min = avio_r8(pb);
678  snprintf(tmp, sizeof(tmp), "%04d-%02d-%02d %02d:%02d", year, mon, day, hour, min);
679  av_dict_set(&st->metadata, "comment_time", tmp, 0);
680 
681  type = avio_rb16(pb);
682  ref = avio_rb16(pb);
683  switch (type) {
684  case 1:
685  if (!i)
686  tag = "channel_comment";
687  else {
688  snprintf(tmp, sizeof(tmp), "channel%d_comment", ref);
689  tag = tmp;
690  }
691  break;
692  case 2:
693  tag = ref < FF_ARRAY_ELEMS(dsd_source_comment) ? dsd_source_comment[ref] : "source_comment";
694  break;
695  case 3:
697  break;
698  default:
699  tag = "comment";
700  }
701 
702  metadata_size = avio_rb32(pb);
703  if ((res = get_metadata(s, tag, metadata_size)) < 0) {
704  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", tag);
705  return res;
706  }
707 
708  if (metadata_size & 1)
709  avio_skip(pb, 1);
710  }
711  break;
712  }
713 
714  if (metadata_tag) {
715  if ((res = get_metadata(s, metadata_tag, data_size)) < 0) {
716  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
717  return res;
718  }
719  }
720  avio_skip(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1));
721  }
722 
723  if (st->codecpar->codec_tag == ID_ANIM)
724  avio_seek(pb, 12, SEEK_SET);
725  else
726  avio_seek(pb, iff->body_pos, SEEK_SET);
727 
728  switch(st->codecpar->codec_type) {
729  case AVMEDIA_TYPE_AUDIO:
730  avpriv_set_pts_info(st, 32, 1, st->codecpar->sample_rate);
731 
732  if (st->codecpar->codec_tag == ID_16SV)
734  else if (st->codecpar->codec_tag == ID_MAUD) {
735  if (iff->maud_bits == 8 && !iff->maud_compression) {
737  } else if (iff->maud_bits == 16 && !iff->maud_compression) {
739  } else if (iff->maud_bits == 8 && iff->maud_compression == 2) {
741  } else if (iff->maud_bits == 8 && iff->maud_compression == 3) {
743  } else {
744  avpriv_request_sample(s, "compression %d and bit depth %d", iff->maud_compression, iff->maud_bits);
745  return AVERROR_PATCHWELCOME;
746  }
747  } else if (st->codecpar->codec_tag != ID_DSD &&
748  st->codecpar->codec_tag != ID_DST) {
749  switch (iff->svx8_compression) {
750  case COMP_NONE:
752  break;
753  case COMP_FIB:
755  break;
756  case COMP_EXP:
758  break;
759  default:
761  "Unknown SVX8 compression method '%d'\n", iff->svx8_compression);
762  return -1;
763  }
764  }
765 
767  st->codecpar->bit_rate = (int64_t)st->codecpar->ch_layout.nb_channels *
768  st->codecpar->sample_rate *
772  if ((st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) && st->codecpar->block_align <= 0)
773  return AVERROR_INVALIDDATA;
774  break;
775 
776  case AVMEDIA_TYPE_VIDEO:
777  iff->bpp = st->codecpar->bits_per_coded_sample;
778  if (st->codecpar->codec_tag == ID_ANIM)
779  avpriv_set_pts_info(st, 32, 1, 60);
780  if ((screenmode & 0x800 /* Hold And Modify */) && iff->bpp <= 8) {
781  iff->ham = iff->bpp > 6 ? 6 : 4;
783  }
784  iff->flags = (screenmode & 0x80 /* Extra HalfBrite */) && iff->bpp <= 8;
785  iff->masking = masking;
786  iff->transparency = transparency;
787 
788  if (!st->codecpar->extradata) {
790  if (ret < 0)
791  return ret;
792  }
794  buf = st->codecpar->extradata;
795  bytestream_put_be16(&buf, IFF_EXTRA_VIDEO_SIZE);
796  bytestream_put_byte(&buf, iff->bitmap_compression);
797  bytestream_put_byte(&buf, iff->bpp);
798  bytestream_put_byte(&buf, iff->ham);
799  bytestream_put_byte(&buf, iff->flags);
800  bytestream_put_be16(&buf, iff->transparency);
801  bytestream_put_byte(&buf, iff->masking);
802  bytestream_put_buffer(&buf, iff->tvdc, sizeof(iff->tvdc));
804  break;
805  default:
806  return -1;
807  }
808 
809  return 0;
810 }
811 
812 static unsigned get_anim_duration(uint8_t *buf, int size)
813 {
814  GetByteContext gb;
815 
816  bytestream2_init(&gb, buf, size);
817  bytestream2_skip(&gb, 4);
818  while (bytestream2_get_bytes_left(&gb) > 8) {
819  unsigned chunk = bytestream2_get_le32(&gb);
820  unsigned size = bytestream2_get_be32(&gb);
821 
822  if (chunk == ID_ANHD) {
823  if (size < 40)
824  break;
825  bytestream2_skip(&gb, 14);
826  return bytestream2_get_be32(&gb);
827  } else {
828  bytestream2_skip(&gb, size + size & 1);
829  }
830  }
831  return 10;
832 }
833 
835  AVPacket *pkt)
836 {
837  IffDemuxContext *iff = s->priv_data;
838  AVIOContext *pb = s->pb;
839  AVStream *st = s->streams[0];
840  int ret;
841  int64_t pos = avio_tell(pb);
842 
843  if (avio_feof(pb))
844  return AVERROR_EOF;
845  if (st->codecpar->codec_tag != ID_ANIM && pos >= iff->body_end)
846  return AVERROR_EOF;
847 
848  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
849  if (st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) {
850  ret = av_get_packet(pb, pkt, FFMIN(iff->body_end - pos, 1024 * st->codecpar->block_align));
851  } else if (st->codecpar->codec_tag == ID_DST) {
852  return read_dst_frame(s, pkt);
853  } else {
854  if (iff->body_size > INT_MAX || !iff->body_size)
855  return AVERROR_INVALIDDATA;
856  ret = av_get_packet(pb, pkt, iff->body_size);
857  }
858  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
859  st->codecpar->codec_tag == ID_ANIM) {
860  uint64_t data_size, orig_pos;
861  uint32_t chunk_id, chunk_id2;
862 
863  while (!avio_feof(pb)) {
864  if (avio_feof(pb))
865  return AVERROR_EOF;
866 
867  orig_pos = avio_tell(pb);
868  chunk_id = avio_rl32(pb);
869  data_size = avio_rb32(pb);
870  chunk_id2 = avio_rl32(pb);
871 
872  if (chunk_id == ID_FORM &&
873  chunk_id2 == ID_ILBM) {
874  avio_skip(pb, -4);
875  break;
876  } else if (chunk_id == ID_FORM &&
877  chunk_id2 == ID_ANIM) {
878  continue;
879  } else {
880  avio_skip(pb, data_size);
881  }
882  }
883  ret = av_get_packet(pb, pkt, data_size);
884  pkt->pos = orig_pos;
886  if (pos == 12)
888  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
889  st->codecpar->codec_tag != ID_ANIM) {
890  if (iff->body_size > INT_MAX || !iff->body_size)
891  return AVERROR_INVALIDDATA;
892  ret = av_get_packet(pb, pkt, iff->body_size);
893  pkt->pos = pos;
894  if (pos == iff->body_pos)
896  } else {
897  av_assert0(0);
898  }
899 
900  if (ret < 0)
901  return ret;
902  pkt->stream_index = 0;
903  return ret;
904 }
905 
907  .p.name = "iff",
908  .p.long_name = NULL_IF_CONFIG_SMALL("IFF (Interchange File Format)"),
910  .priv_data_size = sizeof(IffDemuxContext),
914 };
IffDemuxContext::svx8_compression
svx8_compression_type svx8_compression
Definition: iff.c:115
AVCodecParameters::extradata
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:69
AVFMT_NO_BYTE_SEEK
#define AVFMT_NO_BYTE_SEEK
Format does not allow seeking by bytes.
Definition: avformat.h:487
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
deep_argb
static const uint8_t deep_argb[]
Definition: iff.c:416
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:51
ID_BODY
#define ID_BODY
Definition: iff.c:84
ID_CMAP
#define ID_CMAP
Definition: iff.c:58
AV_CHANNEL_LAYOUT_STEREO
#define AV_CHANNEL_LAYOUT_STEREO
Definition: channel_layout.h:379
GetByteContext
Definition: bytestream.h:33
ID_PBM
#define ID_PBM
Definition: iff.c:53
avformat_new_stream
AVStream * avformat_new_stream(AVFormatContext *s, const struct AVCodec *c)
Add a new stream to a media file.
ID_RGBN
#define ID_RGBN
Definition: iff.c:62
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:494
ID_CHAN
#define ID_CHAN
Definition: iff.c:52
ID_DEEP
#define ID_DEEP
Definition: iff.c:60
ID_DSTF
#define ID_DSTF
Definition: iff.c:66
id3v2.h
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:28
DSD_MRGT
#define DSD_MRGT
Definition: iff.c:177
AVPacket::data
uint8_t * data
Definition: packet.h:524
AV_CODEC_ID_PCM_S16BE_PLANAR
@ AV_CODEC_ID_PCM_S16BE_PLANAR
Definition: codec_id.h:358
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:1140
deep_bgra
static const uint8_t deep_bgra[]
Definition: iff.c:415
IffDemuxContext::masking
unsigned masking
masking method used
Definition: iff.c:123
AV_PIX_FMT_BGRA
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:102
AVPacket::duration
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:542
AVCodecParameters::codec_tag
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:59
AVChannelLayout::order
enum AVChannelOrder order
Channel order used in this layout.
Definition: channel_layout.h:308
get_anim_duration
static unsigned get_anim_duration(uint8_t *buf, int size)
Definition: iff.c:812
IffDemuxContext::body_size
uint32_t body_size
Definition: iff.c:114
AVChannelLayout::nb_channels
int nb_channels
Number of channels in this layout.
Definition: channel_layout.h:313
ID_ILBM
#define ID_ILBM
Definition: iff.c:54
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:579
COMP_NONE
@ COMP_NONE
Definition: iff.c:105
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:30
AVPROBE_SCORE_MAX
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:463
bytestream2_skip
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
Definition: bytestream.h:168
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: avformat.c:853
ID_DGBL
#define ID_DGBL
Definition: iff.c:56
ID_TEXT
#define ID_TEXT
Definition: iff.c:82
AV_CODEC_ID_IFF_ILBM
@ AV_CODEC_ID_IFF_ILBM
Definition: codec_id.h:188
AV_CODEC_ID_PCM_S16BE
@ AV_CODEC_ID_PCM_S16BE
Definition: codec_id.h:329
ID_DBOD
#define ID_DBOD
Definition: iff.c:85
avio_tell
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:494
AVFMT_GENERIC_INDEX
#define AVFMT_GENERIC_INDEX
Use generic index building code.
Definition: avformat.h:480
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:204
AVStream::duration
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:802
AV_CODEC_ID_8SVX_FIB
@ AV_CODEC_ID_8SVX_FIB
Definition: codec_id.h:495
AVRational::num
int num
Numerator.
Definition: rational.h:59
ID_FORM
#define ID_FORM
Definition: iff.c:73
parse_dsd_prop
static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
Definition: iff.c:251
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:1193
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:79
av_get_bits_per_sample
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:547
avassert.h
avio_rb32
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:761
pkt
AVPacket * pkt
Definition: movenc.c:60
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
AVCodecTag
Definition: internal.h:42
ID3v2ExtraMeta
Definition: id3v2.h:84
read_packet
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_read_callback.c:42
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:198
DSD_RS
#define DSD_RS
Definition: iff.c:180
AVInputFormat::name
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:553
iff_read_header
static int iff_read_header(AVFormatContext *s)
Definition: iff.c:419
AVProbeData::buf
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:453
iff_read_packet
static int iff_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: iff.c:834
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
AVCodecParameters::width
int width
Video only.
Definition: codec_par.h:134
AV_CHANNEL_ORDER_UNSPEC
@ AV_CHANNEL_ORDER_UNSPEC
Only the channel count is specified, without any further information about the channel order.
Definition: channel_layout.h:112
IffDemuxContext::tvdc
uint8_t tvdc[32]
TVDC lookup table.
Definition: iff.c:124
DSD_C
#define DSD_C
Definition: iff.c:178
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:40
ID_DPEL
#define ID_DPEL
Definition: iff.c:86
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:44
AV_CODEC_ID_PCM_MULAW
@ AV_CODEC_ID_PCM_MULAW
Definition: codec_id.h:334
ID_AUTH
#define ID_AUTH
Definition: iff.c:76
ID_BMHD
#define ID_BMHD
Definition: iff.c:55
AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:100
if
if(ret)
Definition: filter_design.txt:179
DSD_SRGT
#define DSD_SRGT
Definition: iff.c:175
AVFormatContext
Format I/O context.
Definition: avformat.h:1255
AV_CODEC_ID_PCM_ALAW
@ AV_CODEC_ID_PCM_ALAW
Definition: codec_id.h:335
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:766
read_header
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:550
DSD_LFE
#define DSD_LFE
Definition: iff.c:181
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:521
ID_FRTE
#define ID_FRTE
Definition: iff.c:67
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:1162
avio_rb64
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:908
dsd_codec_tags
static const AVCodecTag dsd_codec_tags[]
Definition: iff.c:167
AVProbeData
This structure contains the data a format has to probe a file.
Definition: avformat.h:451
AVStream::metadata
AVDictionary * metadata
Definition: avformat.h:823
IffDemuxContext
Definition: iff.c:110
ID_ACBM
#define ID_ACBM
Definition: iff.c:59
AVCodecParameters::ch_layout
AVChannelLayout ch_layout
Audio only.
Definition: codec_par.h:180
AV_PIX_FMT_ABGR
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:101
ID_DPAN
#define ID_DPAN
Definition: iff.c:71
AVCodecParameters::sample_rate
int sample_rate
Audio only.
Definition: codec_par.h:184
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:73
ID_ABIT
#define ID_ABIT
Definition: iff.c:83
dsd_history_comment
static const char * dsd_history_comment[]
Definition: iff.c:210
avio_rl32
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:730
AVIOContext
Bytestream IO Context.
Definition: avio.h:160
AV_PIX_FMT_RGB24
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:75
AVPacket::size
int size
Definition: packet.h:525
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:94
IffDemuxContext::flags
unsigned flags
1 for EHB, 0 is no extra half darkening
Definition: iff.c:121
ff_codec_get_id
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:133
iff_probe
static int iff_probe(const AVProbeData *p)
Definition: iff.c:147
AVChannelLayout
An AVChannelLayout holds information about the channel layout of audio data.
Definition: channel_layout.h:303
AV_CODEC_ID_DSD_MSBF
@ AV_CODEC_ID_DSD_MSBF
Definition: codec_id.h:514
ID_ANIM
#define ID_ANIM
Definition: iff.c:68
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:57
AVStream::sample_aspect_ratio
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:821
FFInputFormat::p
AVInputFormat p
The public AVInputFormat.
Definition: demux.h:41
read_dst_frame
static int read_dst_frame(AVFormatContext *s, AVPacket *pkt)
Definition: iff.c:355
ID_MHDR
#define ID_MHDR
Definition: iff.c:47
DSD_MLFT
#define DSD_MLFT
Definition: iff.c:176
avio_r8
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:603
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:530
version
version
Definition: libkvazaar.c:321
ID_FRM8
#define ID_FRM8
Definition: iff.c:74
deep_rgb24
static const uint8_t deep_rgb24[]
Definition: iff.c:413
DSDLayoutDesc::layout
AVChannelLayout layout
Definition: iff.c:188
AV_PIX_FMT_ARGB
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:99
COMP_FIB
@ COMP_FIB
Definition: iff.c:106
IffDemuxContext::pts
int64_t pts
Definition: iff.c:125
IffDemuxContext::maud_bits
unsigned maud_bits
Definition: iff.c:116
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:50
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
get_metadata
static int get_metadata(AVFormatContext *s, const char *const tag, const unsigned data_size)
Definition: iff.c:129
AVCodecParameters::height
int height
Definition: codec_par.h:135
ID_RGB8
#define ID_RGB8
Definition: iff.c:61
AVCodecParameters::block_align
int block_align
Audio only.
Definition: codec_par.h:191
ID_DST
#define ID_DST
Definition: iff.c:64
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
IffDemuxContext::bitmap_compression
unsigned bitmap_compression
delta compression method used
Definition: iff.c:118
IffDemuxContext::body_pos
int64_t body_pos
Definition: iff.c:112
ID_VHDR
#define ID_VHDR
Definition: iff.c:49
ID_DLOC
#define ID_DLOC
Definition: iff.c:87
demux.h
ID_DSD
#define ID_DSD
Definition: iff.c:63
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:91
ID_ANHD
#define ID_ANHD
Definition: iff.c:69
tag
uint32_t tag
Definition: movenc.c:1788
ret
ret
Definition: filter_design.txt:187
AVStream
Stream structure.
Definition: avformat.h:743
DSDLayoutDesc::dsd_layout
const uint32_t * dsd_layout
Definition: iff.c:189
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:231
avio_rb16
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:746
pos
unsigned int pos
Definition: spdifenc.c:414
avformat.h
dict.h
DSD_SLFT
#define DSD_SLFT
Definition: iff.c:174
av_sat_add64
#define av_sat_add64
Definition: common.h:141
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:119
dsd_5point1
static const uint32_t dsd_5point1[]
Definition: iff.c:185
DSD_LS
#define DSD_LS
Definition: iff.c:179
ID_TVDC
#define ID_TVDC
Definition: iff.c:88
channel_layout.h
deep_abgr
static const uint8_t deep_abgr[]
Definition: iff.c:417
parse_dsd_diin
static int parse_dsd_diin(AVFormatContext *s, AVStream *st, uint64_t eof)
Definition: iff.c:218
AVRational::den
int den
Denominator.
Definition: rational.h:60
ID_MDAT
#define ID_MDAT
Definition: iff.c:48
avio_read
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:612
ID_MAUD
#define ID_MAUD
Definition: iff.c:46
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:112
AVPacket::stream_index
int stream_index
Definition: packet.h:526
COMP_EXP
@ COMP_EXP
Definition: iff.c:107
avio_skip
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:318
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
read_probe
static int read_probe(const AVProbeData *p)
Definition: cdg.c:30
AVCodecParameters::bits_per_coded_sample
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: codec_par.h:110
ID_16SV
#define ID_16SV
Definition: iff.c:45
mem.h
ID_COPYRIGHT
#define ID_COPYRIGHT
Definition: iff.c:78
AV_CODEC_ID_PCM_U8
@ AV_CODEC_ID_PCM_U8
Definition: codec_id.h:333
avpriv_request_sample
#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:36
AVCodecParameters::format
int format
Definition: codec_par.h:92
IffDemuxContext::ham
unsigned ham
0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise)
Definition: iff.c:120
AV_CHANNEL_LAYOUT_MONO
#define AV_CHANNEL_LAYOUT_MONO
Definition: channel_layout.h:378
av_free
#define av_free(p)
Definition: tableprint_vlc.h:33
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:55
dsd_5point0
static const uint32_t dsd_5point0[]
Definition: iff.c:184
AVPacket
This structure stores compressed data.
Definition: packet.h:501
svx8_compression_type
svx8_compression_type
Definition: iff.c:104
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:102
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
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:88
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:1146
deep_rgba
static const uint8_t deep_rgba[]
Definition: iff.c:414
AVPacket::pos
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:544
FFInputFormat
Definition: demux.h:37
AV_CODEC_ID_PCM_S8_PLANAR
@ AV_CODEC_ID_PCM_S8_PLANAR
Definition: codec_id.h:355
d
d
Definition: ffmpeg_filter.c:424
bytestream.h
bytestream2_init
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:137
AVCodecParameters::bit_rate
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: codec_par.h:97
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
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:122
AV_CHANNEL_LAYOUT_5POINT0
#define AV_CHANNEL_LAYOUT_5POINT0
Definition: channel_layout.h:388
dsd_loudspeaker_config
static const AVChannelLayout dsd_loudspeaker_config[]
Definition: iff.c:198
dsd_channel_layout
static const DSDLayoutDesc dsd_channel_layout[]
Definition: iff.c:192
IffDemuxContext::body_end
int64_t body_end
Definition: iff.c:113
AV_CHANNEL_LAYOUT_5POINT1
#define AV_CHANNEL_LAYOUT_5POINT1
Definition: channel_layout.h:389
ff_iff_demuxer
const FFInputFormat ff_iff_demuxer
Definition: iff.c:906
dsd_stereo
static const uint32_t dsd_stereo[]
Definition: iff.c:183
snprintf
#define snprintf
Definition: snprintf.h:34
IffDemuxContext::is_64bit
int is_64bit
chunk size is 64-bit
Definition: iff.c:111
IffDemuxContext::maud_compression
unsigned maud_compression
Definition: iff.c:117
DSDLayoutDesc
Definition: iff.c:187
av_fourcc2str
#define av_fourcc2str(fourcc)
Definition: avutil.h:345
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:227
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:346
ID_ANNO
#define ID_ANNO
Definition: iff.c:75
ID_NAME
#define ID_NAME
Definition: iff.c:81