FFmpeg
iff.c
Go to the documentation of this file.
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 "demux.h"
40 #include "id3v2.h"
41 #include "internal.h"
42 
43 #define ID_8SVX MKTAG('8','S','V','X')
44 #define ID_16SV MKTAG('1','6','S','V')
45 #define ID_MAUD MKTAG('M','A','U','D')
46 #define ID_MHDR MKTAG('M','H','D','R')
47 #define ID_MDAT MKTAG('M','D','A','T')
48 #define ID_VHDR MKTAG('V','H','D','R')
49 #define ID_ATAK MKTAG('A','T','A','K')
50 #define ID_RLSE MKTAG('R','L','S','E')
51 #define ID_CHAN MKTAG('C','H','A','N')
52 #define ID_PBM MKTAG('P','B','M',' ')
53 #define ID_ILBM MKTAG('I','L','B','M')
54 #define ID_BMHD MKTAG('B','M','H','D')
55 #define ID_DGBL MKTAG('D','G','B','L')
56 #define ID_CAMG MKTAG('C','A','M','G')
57 #define ID_CMAP MKTAG('C','M','A','P')
58 #define ID_ACBM MKTAG('A','C','B','M')
59 #define ID_DEEP MKTAG('D','E','E','P')
60 #define ID_RGB8 MKTAG('R','G','B','8')
61 #define ID_RGBN MKTAG('R','G','B','N')
62 #define ID_DSD MKTAG('D','S','D',' ')
63 #define ID_DST MKTAG('D','S','T',' ')
64 #define ID_DSTC MKTAG('D','S','T','C')
65 #define ID_DSTF MKTAG('D','S','T','F')
66 #define ID_FRTE MKTAG('F','R','T','E')
67 #define ID_ANIM MKTAG('A','N','I','M')
68 #define ID_ANHD MKTAG('A','N','H','D')
69 #define ID_DLTA MKTAG('D','L','T','A')
70 #define ID_DPAN MKTAG('D','P','A','N')
71 
72 #define ID_FORM MKTAG('F','O','R','M')
73 #define ID_FRM8 MKTAG('F','R','M','8')
74 #define ID_ANNO MKTAG('A','N','N','O')
75 #define ID_AUTH MKTAG('A','U','T','H')
76 #define ID_CHRS MKTAG('C','H','R','S')
77 #define ID_COPYRIGHT MKTAG('(','c',')',' ')
78 #define ID_CSET MKTAG('C','S','E','T')
79 #define ID_FVER MKTAG('F','V','E','R')
80 #define ID_NAME MKTAG('N','A','M','E')
81 #define ID_TEXT MKTAG('T','E','X','T')
82 #define ID_ABIT MKTAG('A','B','I','T')
83 #define ID_BODY MKTAG('B','O','D','Y')
84 #define ID_DBOD MKTAG('D','B','O','D')
85 #define ID_DPEL MKTAG('D','P','E','L')
86 #define ID_DLOC MKTAG('D','L','O','C')
87 #define ID_TVDC MKTAG('T','V','D','C')
88 
89 #define LEFT 2
90 #define RIGHT 4
91 #define STEREO 6
92 
93 /**
94  * This number of bytes if added at the beginning of each AVPacket
95  * which contain additional information about video properties
96  * which has to be shared between demuxer and decoder.
97  * This number may change between frames, e.g. the demuxer might
98  * set it to smallest possible size of 2 to indicate that there's
99  * no extradata changing in this frame.
100  */
101 #define IFF_EXTRA_VIDEO_SIZE 41
102 
103 typedef enum {
108 
109 typedef struct IffDemuxContext {
110  int is_64bit; ///< chunk size is 64-bit
113  uint32_t body_size;
115  unsigned maud_bits;
117  unsigned bitmap_compression; ///< delta compression method used
118  unsigned bpp; ///< bits per plane to decode (differs from bits_per_coded_sample if HAM)
119  unsigned ham; ///< 0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise)
120  unsigned flags; ///< 1 for EHB, 0 is no extra half darkening
121  unsigned transparency; ///< transparency color index in palette
122  unsigned masking; ///< masking method used
123  uint8_t tvdc[32]; ///< TVDC lookup table
126 
127 /* Metadata string read */
129  const char *const tag,
130  const unsigned data_size)
131 {
132  uint8_t *buf = ((data_size + 1) == 0) ? NULL : av_malloc(data_size + 1);
133 
134  if (!buf)
135  return AVERROR(ENOMEM);
136 
137  if (avio_read(s->pb, buf, data_size) != data_size) {
138  av_free(buf);
139  return AVERROR(EIO);
140  }
141  buf[data_size] = 0;
142  av_dict_set(&s->metadata, tag, buf, AV_DICT_DONT_STRDUP_VAL);
143  return 0;
144 }
145 
146 static int iff_probe(const AVProbeData *p)
147 {
148  const uint8_t *d = p->buf;
149 
150  if ( (AV_RL32(d) == ID_FORM &&
151  (AV_RL32(d+8) == ID_8SVX ||
152  AV_RL32(d+8) == ID_16SV ||
153  AV_RL32(d+8) == ID_MAUD ||
154  AV_RL32(d+8) == ID_PBM ||
155  AV_RL32(d+8) == ID_ACBM ||
156  AV_RL32(d+8) == ID_DEEP ||
157  AV_RL32(d+8) == ID_ILBM ||
158  AV_RL32(d+8) == ID_RGB8 ||
159  AV_RL32(d+8) == ID_ANIM ||
160  AV_RL32(d+8) == ID_RGBN)) ||
161  (AV_RL32(d) == ID_FRM8 && AV_RL32(d+12) == ID_DSD))
162  return AVPROBE_SCORE_MAX;
163  return 0;
164 }
165 
166 static const AVCodecTag dsd_codec_tags[] = {
168  { AV_CODEC_ID_DST, ID_DST },
169  { AV_CODEC_ID_NONE, 0 },
170 };
171 
172 
173 #define DSD_SLFT MKTAG('S','L','F','T')
174 #define DSD_SRGT MKTAG('S','R','G','T')
175 #define DSD_MLFT MKTAG('M','L','F','T')
176 #define DSD_MRGT MKTAG('M','R','G','T')
177 #define DSD_C MKTAG('C',' ',' ',' ')
178 #define DSD_LS MKTAG('L','S',' ',' ')
179 #define DSD_RS MKTAG('R','S',' ',' ')
180 #define DSD_LFE MKTAG('L','F','E',' ')
181 
182 static const uint32_t dsd_stereo[] = { DSD_SLFT, DSD_SRGT };
183 static const uint32_t dsd_5point0[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LS, DSD_RS };
184 static const uint32_t dsd_5point1[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LFE, DSD_LS, DSD_RS };
185 
186 typedef struct {
188  const uint32_t * dsd_layout;
189 } DSDLayoutDesc;
190 
195 };
196 
199  { 0 }, { 0 },
201 };
202 
203 static const char * dsd_source_comment[] = {
204  "dsd_source_comment",
205  "analogue_source_comment",
206  "pcm_source_comment",
207 };
208 
209 static const char * dsd_history_comment[] = {
210  "general_remark",
211  "operator_name",
212  "creating_machine",
213  "timezone",
214  "file_revision"
215 };
216 
217 static int parse_dsd_diin(AVFormatContext *s, AVStream *st, uint64_t eof)
218 {
219  AVIOContext *pb = s->pb;
220 
221  while (av_sat_add64(avio_tell(pb), 12) <= eof && !avio_feof(pb)) {
222  uint32_t tag = avio_rl32(pb);
223  uint64_t size = avio_rb64(pb);
224  uint64_t orig_pos = avio_tell(pb);
225  const char * metadata_tag = NULL;
226 
227  if (size >= INT64_MAX)
228  return AVERROR_INVALIDDATA;
229 
230  switch(tag) {
231  case MKTAG('D','I','A','R'): metadata_tag = "artist"; break;
232  case MKTAG('D','I','T','I'): metadata_tag = "title"; break;
233  }
234 
235  if (metadata_tag && size > 4) {
236  unsigned int tag_size = avio_rb32(pb);
237  int ret = get_metadata(s, metadata_tag, FFMIN(tag_size, size - 4));
238  if (ret < 0) {
239  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
240  return ret;
241  }
242  }
243 
244  avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
245  }
246 
247  return 0;
248 }
249 
250 static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
251 {
252  AVIOContext *pb = s->pb;
253  char abss[24];
254  int hour, min, sec, i, ret, config;
255  int dsd_layout[6];
256  ID3v2ExtraMeta *id3v2_extra_meta;
257 
258  while (av_sat_add64(avio_tell(pb), 12) <= eof && !avio_feof(pb)) {
259  uint32_t tag = avio_rl32(pb);
260  uint64_t size = avio_rb64(pb);
261  uint64_t orig_pos = avio_tell(pb);
262 
263  if (size >= INT64_MAX)
264  return AVERROR_INVALIDDATA;
265 
266  switch(tag) {
267  case MKTAG('A','B','S','S'):
268  if (size < 8)
269  return AVERROR_INVALIDDATA;
270  hour = avio_rb16(pb);
271  min = avio_r8(pb);
272  sec = avio_r8(pb);
273  snprintf(abss, sizeof(abss), "%02dh:%02dm:%02ds:%d", hour, min, sec, avio_rb32(pb));
274  av_dict_set(&st->metadata, "absolute_start_time", abss, 0);
275  break;
276 
277  case MKTAG('C','H','N','L'):
278  if (size < 2)
279  return AVERROR_INVALIDDATA;
282  if (size < 2 + st->codecpar->ch_layout.nb_channels * 4)
283  return AVERROR_INVALIDDATA;
284  if (st->codecpar->ch_layout.nb_channels > FF_ARRAY_ELEMS(dsd_layout)) {
285  avpriv_request_sample(s, "channel layout");
286  break;
287  }
288  for (i = 0; i < st->codecpar->ch_layout.nb_channels; i++)
289  dsd_layout[i] = avio_rl32(pb);
290  for (i = 0; i < FF_ARRAY_ELEMS(dsd_channel_layout); i++) {
291  const DSDLayoutDesc * d = &dsd_channel_layout[i];
292  if (d->layout.nb_channels == st->codecpar->ch_layout.nb_channels &&
293  !memcmp(d->dsd_layout, dsd_layout, d->layout.nb_channels * sizeof(uint32_t))) {
294  st->codecpar->ch_layout = d->layout;
295  break;
296  }
297  }
298  break;
299 
300  case MKTAG('C','M','P','R'):
301  if (size < 4)
302  return AVERROR_INVALIDDATA;
303  st->codecpar->codec_tag = tag = avio_rl32(pb);
305  if (!st->codecpar->codec_id) {
306  av_log(s, AV_LOG_ERROR, "'%s' compression is not supported\n",
307  av_fourcc2str(tag));
308  return AVERROR_PATCHWELCOME;
309  }
310  break;
311 
312  case MKTAG('F','S',' ',' '):
313  if (size < 4)
314  return AVERROR_INVALIDDATA;
315  st->codecpar->sample_rate = avio_rb32(pb) / 8;
316  break;
317 
318  case MKTAG('I','D','3',' '):
319  ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, size);
320  if (id3v2_extra_meta) {
321  if ((ret = ff_id3v2_parse_apic(s, id3v2_extra_meta)) < 0 ||
322  (ret = ff_id3v2_parse_chapters(s, id3v2_extra_meta)) < 0) {
323  ff_id3v2_free_extra_meta(&id3v2_extra_meta);
324  return ret;
325  }
326  ff_id3v2_free_extra_meta(&id3v2_extra_meta);
327  }
328 
329  if (size < avio_tell(pb) - orig_pos) {
330  av_log(s, AV_LOG_ERROR, "id3 exceeds chunk size\n");
331  return AVERROR_INVALIDDATA;
332  }
333  break;
334 
335  case MKTAG('L','S','C','O'):
336  if (size < 2)
337  return AVERROR_INVALIDDATA;
338  config = avio_rb16(pb);
339  if (config != 0xFFFF) {
342  if (!st->codecpar->ch_layout.nb_channels)
343  avpriv_request_sample(s, "loudspeaker configuration %d", config);
344  }
345  break;
346  }
347 
348  avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
349  }
350 
351  return 0;
352 }
353 
355 {
356  IffDemuxContext *iff = s->priv_data;
357  AVIOContext *pb = s->pb;
358  uint32_t chunk_id;
359  uint64_t chunk_pos, data_pos, data_size;
360  int ret = AVERROR_EOF;
361 
362  while (!avio_feof(pb)) {
363  chunk_pos = avio_tell(pb);
364  if (chunk_pos >= iff->body_end)
365  return AVERROR_EOF;
366 
367  chunk_id = avio_rl32(pb);
368  data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
369  data_pos = avio_tell(pb);
370 
371  if (data_size < 1 || data_size >= INT64_MAX)
372  return AVERROR_INVALIDDATA;
373 
374  switch (chunk_id) {
375  case ID_DSTF:
376  if (!pkt) {
377  iff->body_pos = avio_tell(pb) - (iff->is_64bit ? 12 : 8);
378  iff->body_size = iff->body_end - iff->body_pos;
379  return 0;
380  }
381  ret = av_get_packet(pb, pkt, data_size);
382  if (ret < 0)
383  return ret;
384  if (data_size & 1)
385  avio_skip(pb, 1);
387  pkt->stream_index = 0;
388  pkt->duration = s->streams[0]->codecpar->sample_rate / 75;
389  pkt->pos = chunk_pos;
390 
391  chunk_pos = avio_tell(pb);
392  if (chunk_pos >= iff->body_end)
393  return 0;
394 
395  avio_seek(pb, chunk_pos, SEEK_SET);
396  return 0;
397 
398  case ID_FRTE:
399  if (data_size < 4)
400  return AVERROR_INVALIDDATA;
401  s->streams[0]->duration = avio_rb32(pb) * (uint64_t)s->streams[0]->codecpar->sample_rate / 75;
402 
403  break;
404  }
405 
406  avio_skip(pb, data_size - (avio_tell(pb) - data_pos) + (data_size & 1));
407  }
408 
409  return ret;
410 }
411 
412 static const uint8_t deep_rgb24[] = {0, 0, 0, 3, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
413 static const uint8_t deep_rgba[] = {0, 0, 0, 4, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
414 static const uint8_t deep_bgra[] = {0, 0, 0, 4, 0, 3, 0, 8, 0, 2, 0, 8, 0, 1, 0, 8};
415 static const uint8_t deep_argb[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 1, 0, 8, 0, 2, 0, 8};
416 static const uint8_t deep_abgr[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 3, 0, 8, 0, 2, 0, 8};
417 
419 {
420  IffDemuxContext *iff = s->priv_data;
421  AVIOContext *pb = s->pb;
422  AVStream *st;
423  uint8_t *buf;
424  uint32_t chunk_id;
425  uint64_t data_size;
426  uint32_t screenmode = 0, num, den;
427  unsigned transparency = 0;
428  unsigned masking = 0; // no mask
429  uint8_t fmt[16];
430  int fmt_size;
431 
432  st = avformat_new_stream(s, NULL);
433  if (!st)
434  return AVERROR(ENOMEM);
435 
437  iff->is_64bit = avio_rl32(pb) == ID_FRM8;
438  avio_skip(pb, iff->is_64bit ? 8 : 4);
439  // codec_tag used by ByteRun1 decoder to distinguish progressive (PBM) and interlaced (ILBM) content
440  st->codecpar->codec_tag = avio_rl32(pb);
441  if (st->codecpar->codec_tag == ID_ANIM) {
442  avio_skip(pb, 12);
443  }
444  iff->bitmap_compression = -1;
445  iff->svx8_compression = -1;
446  iff->maud_bits = -1;
447  iff->maud_compression = -1;
448 
449  while(!avio_feof(pb)) {
450  uint64_t orig_pos;
451  int res;
452  const char *metadata_tag = NULL;
453  int version, nb_comments, i;
454  chunk_id = avio_rl32(pb);
455  data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
456  orig_pos = avio_tell(pb);
457 
458  if (data_size >= INT64_MAX)
459  return AVERROR_INVALIDDATA;
460 
461  switch(chunk_id) {
462  case ID_VHDR:
464 
465  if (data_size < 14)
466  return AVERROR_INVALIDDATA;
467  avio_skip(pb, 12);
468  st->codecpar->sample_rate = avio_rb16(pb);
469  if (data_size >= 16) {
470  avio_skip(pb, 1);
471  iff->svx8_compression = avio_r8(pb);
472  }
473  break;
474 
475  case ID_MHDR:
477 
478  if (data_size < 32)
479  return AVERROR_INVALIDDATA;
480  avio_skip(pb, 4);
481  iff->maud_bits = avio_rb16(pb);
482  avio_skip(pb, 2);
483  num = avio_rb32(pb);
484  den = avio_rb16(pb);
485  if (!den)
486  return AVERROR_INVALIDDATA;
487  avio_skip(pb, 2);
488  st->codecpar->sample_rate = num / den;
491  iff->maud_compression = avio_rb16(pb);
492  if (st->codecpar->ch_layout.nb_channels == 1)
494  else if (st->codecpar->ch_layout.nb_channels == 2)
496  break;
497 
498  case ID_ABIT:
499  case ID_BODY:
500  case ID_DBOD:
501  case ID_DSD:
502  case ID_DST:
503  case ID_MDAT:
504  iff->body_pos = avio_tell(pb);
505  if (iff->body_pos < 0 || iff->body_pos + data_size > INT64_MAX)
506  return AVERROR_INVALIDDATA;
507 
508  iff->body_end = iff->body_pos + data_size;
509  iff->body_size = data_size;
510  if (chunk_id == ID_DST) {
511  int ret = read_dst_frame(s, NULL);
512  if (ret < 0)
513  return ret;
514  }
515  break;
516 
517  case ID_CHAN:
518  if (data_size < 4)
519  return AVERROR_INVALIDDATA;
520  if (avio_rb32(pb) < 6) {
522  } else {
524  }
525  break;
526 
527  case ID_CAMG:
528  if (data_size < 4)
529  return AVERROR_INVALIDDATA;
530  screenmode = avio_rb32(pb);
531  break;
532 
533  case ID_CMAP:
534  if (data_size < 3 || data_size > 768 || data_size % 3) {
535  av_log(s, AV_LOG_ERROR, "Invalid CMAP chunk size %"PRIu64"\n",
536  data_size);
537  return AVERROR_INVALIDDATA;
538  }
539  res = ff_alloc_extradata(st->codecpar,
540  data_size + IFF_EXTRA_VIDEO_SIZE);
541  if (res < 0)
542  return res;
543  if (avio_read(pb, st->codecpar->extradata + IFF_EXTRA_VIDEO_SIZE, data_size) < 0) {
544  av_freep(&st->codecpar->extradata);
545  st->codecpar->extradata_size = 0;
546  return AVERROR(EIO);
547  }
548  break;
549 
550  case ID_BMHD:
552  if (data_size <= 8)
553  return AVERROR_INVALIDDATA;
554  st->codecpar->width = avio_rb16(pb);
555  st->codecpar->height = avio_rb16(pb);
556  avio_skip(pb, 4); // x, y offset
558  if (data_size >= 10)
559  masking = avio_r8(pb);
560  if (data_size >= 11)
561  iff->bitmap_compression = avio_r8(pb);
562  if (data_size >= 14) {
563  avio_skip(pb, 1); // padding
564  transparency = avio_rb16(pb);
565  }
566  if (data_size >= 16) {
567  st->sample_aspect_ratio.num = avio_r8(pb);
568  st->sample_aspect_ratio.den = avio_r8(pb);
569  }
570  break;
571 
572  case ID_ANHD:
573  break;
574 
575  case ID_DPAN:
576  avio_skip(pb, 2);
577  st->duration = avio_rb16(pb);
578  break;
579 
580  case ID_DPEL:
581  if (data_size < 4 || (data_size & 3))
582  return AVERROR_INVALIDDATA;
583  if ((fmt_size = avio_read(pb, fmt, sizeof(fmt))) < 0)
584  return fmt_size;
585  if (fmt_size == sizeof(deep_rgb24) && !memcmp(fmt, deep_rgb24, sizeof(deep_rgb24)))
587  else if (fmt_size == sizeof(deep_rgba) && !memcmp(fmt, deep_rgba, sizeof(deep_rgba)))
589  else if (fmt_size == sizeof(deep_bgra) && !memcmp(fmt, deep_bgra, sizeof(deep_bgra)))
591  else if (fmt_size == sizeof(deep_argb) && !memcmp(fmt, deep_argb, sizeof(deep_argb)))
593  else if (fmt_size == sizeof(deep_abgr) && !memcmp(fmt, deep_abgr, sizeof(deep_abgr)))
595  else {
596  avpriv_request_sample(s, "color format %.16s", fmt);
597  return AVERROR_PATCHWELCOME;
598  }
599  break;
600 
601  case ID_DGBL:
603  if (data_size < 8)
604  return AVERROR_INVALIDDATA;
605  st->codecpar->width = avio_rb16(pb);
606  st->codecpar->height = avio_rb16(pb);
607  iff->bitmap_compression = avio_rb16(pb);
608  st->sample_aspect_ratio.num = avio_r8(pb);
609  st->sample_aspect_ratio.den = avio_r8(pb);
611  break;
612 
613  case ID_DLOC:
614  if (data_size < 4)
615  return AVERROR_INVALIDDATA;
616  st->codecpar->width = avio_rb16(pb);
617  st->codecpar->height = avio_rb16(pb);
618  break;
619 
620  case ID_TVDC:
621  if (data_size < sizeof(iff->tvdc))
622  return AVERROR_INVALIDDATA;
623  res = avio_read(pb, iff->tvdc, sizeof(iff->tvdc));
624  if (res < 0)
625  return res;
626  break;
627 
628  case ID_ANNO:
629  case ID_TEXT: metadata_tag = "comment"; break;
630  case ID_AUTH: metadata_tag = "artist"; break;
631  case ID_COPYRIGHT: metadata_tag = "copyright"; break;
632  case ID_NAME: metadata_tag = "title"; break;
633 
634  /* DSD tags */
635 
636  case MKTAG('F','V','E','R'):
637  if (data_size < 4)
638  return AVERROR_INVALIDDATA;
639  version = avio_rb32(pb);
640  av_log(s, AV_LOG_DEBUG, "DSIFF v%d.%d.%d.%d\n",version >> 24, (version >> 16) & 0xFF, (version >> 8) & 0xFF, version & 0xFF);
642  break;
643 
644  case MKTAG('D','I','I','N'):
645  res = parse_dsd_diin(s, st, orig_pos + data_size);
646  if (res < 0)
647  return res;
648  break;
649 
650  case MKTAG('P','R','O','P'):
651  if (data_size < 4)
652  return AVERROR_INVALIDDATA;
653  if (avio_rl32(pb) != MKTAG('S','N','D',' ')) {
654  avpriv_request_sample(s, "unknown property type");
655  break;
656  }
657  res = parse_dsd_prop(s, st, orig_pos + data_size);
658  if (res < 0)
659  return res;
660  break;
661 
662  case MKTAG('C','O','M','T'):
663  if (data_size < 2)
664  return AVERROR_INVALIDDATA;
665  nb_comments = avio_rb16(pb);
666  for (i = 0; i < nb_comments; i++) {
667  int year, mon, day, hour, min, type, ref;
668  char tmp[24];
669  const char *tag;
670  int metadata_size;
671 
672  year = avio_rb16(pb);
673  mon = avio_r8(pb);
674  day = avio_r8(pb);
675  hour = avio_r8(pb);
676  min = avio_r8(pb);
677  snprintf(tmp, sizeof(tmp), "%04d-%02d-%02d %02d:%02d", year, mon, day, hour, min);
678  av_dict_set(&st->metadata, "comment_time", tmp, 0);
679 
680  type = avio_rb16(pb);
681  ref = avio_rb16(pb);
682  switch (type) {
683  case 1:
684  if (!i)
685  tag = "channel_comment";
686  else {
687  snprintf(tmp, sizeof(tmp), "channel%d_comment", ref);
688  tag = tmp;
689  }
690  break;
691  case 2:
692  tag = ref < FF_ARRAY_ELEMS(dsd_source_comment) ? dsd_source_comment[ref] : "source_comment";
693  break;
694  case 3:
696  break;
697  default:
698  tag = "comment";
699  }
700 
701  metadata_size = avio_rb32(pb);
702  if ((res = get_metadata(s, tag, metadata_size)) < 0) {
703  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", tag);
704  return res;
705  }
706 
707  if (metadata_size & 1)
708  avio_skip(pb, 1);
709  }
710  break;
711  }
712 
713  if (metadata_tag) {
714  if ((res = get_metadata(s, metadata_tag, data_size)) < 0) {
715  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
716  return res;
717  }
718  }
719  avio_skip(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1));
720  }
721 
722  if (st->codecpar->codec_tag == ID_ANIM)
723  avio_seek(pb, 12, SEEK_SET);
724  else
725  avio_seek(pb, iff->body_pos, SEEK_SET);
726 
727  switch(st->codecpar->codec_type) {
728  case AVMEDIA_TYPE_AUDIO:
729  avpriv_set_pts_info(st, 32, 1, st->codecpar->sample_rate);
730 
731  if (st->codecpar->codec_tag == ID_16SV)
733  else if (st->codecpar->codec_tag == ID_MAUD) {
734  if (iff->maud_bits == 8 && !iff->maud_compression) {
736  } else if (iff->maud_bits == 16 && !iff->maud_compression) {
738  } else if (iff->maud_bits == 8 && iff->maud_compression == 2) {
740  } else if (iff->maud_bits == 8 && iff->maud_compression == 3) {
742  } else {
743  avpriv_request_sample(s, "compression %d and bit depth %d", iff->maud_compression, iff->maud_bits);
744  return AVERROR_PATCHWELCOME;
745  }
746  } else if (st->codecpar->codec_tag != ID_DSD &&
747  st->codecpar->codec_tag != ID_DST) {
748  switch (iff->svx8_compression) {
749  case COMP_NONE:
751  break;
752  case COMP_FIB:
754  break;
755  case COMP_EXP:
757  break;
758  default:
760  "Unknown SVX8 compression method '%d'\n", iff->svx8_compression);
761  return -1;
762  }
763  }
764 
767  st->codecpar->sample_rate *
771  if ((st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) && st->codecpar->block_align <= 0)
772  return AVERROR_INVALIDDATA;
773  break;
774 
775  case AVMEDIA_TYPE_VIDEO:
776  iff->bpp = st->codecpar->bits_per_coded_sample;
777  if (st->codecpar->codec_tag == ID_ANIM)
778  avpriv_set_pts_info(st, 32, 1, 60);
779  if ((screenmode & 0x800 /* Hold And Modify */) && iff->bpp <= 8) {
780  iff->ham = iff->bpp > 6 ? 6 : 4;
782  }
783  iff->flags = (screenmode & 0x80 /* Extra HalfBrite */) && iff->bpp <= 8;
784  iff->masking = masking;
785  iff->transparency = transparency;
786 
787  if (!st->codecpar->extradata) {
789  if (ret < 0)
790  return ret;
791  }
793  buf = st->codecpar->extradata;
794  bytestream_put_be16(&buf, IFF_EXTRA_VIDEO_SIZE);
795  bytestream_put_byte(&buf, iff->bitmap_compression);
796  bytestream_put_byte(&buf, iff->bpp);
797  bytestream_put_byte(&buf, iff->ham);
798  bytestream_put_byte(&buf, iff->flags);
799  bytestream_put_be16(&buf, iff->transparency);
800  bytestream_put_byte(&buf, iff->masking);
801  bytestream_put_buffer(&buf, iff->tvdc, sizeof(iff->tvdc));
803  break;
804  default:
805  return -1;
806  }
807 
808  return 0;
809 }
810 
811 static unsigned get_anim_duration(uint8_t *buf, int size)
812 {
813  GetByteContext gb;
814 
815  bytestream2_init(&gb, buf, size);
816  bytestream2_skip(&gb, 4);
817  while (bytestream2_get_bytes_left(&gb) > 8) {
818  unsigned chunk = bytestream2_get_le32(&gb);
819  unsigned size = bytestream2_get_be32(&gb);
820 
821  if (chunk == ID_ANHD) {
822  if (size < 40)
823  break;
824  bytestream2_skip(&gb, 14);
825  return bytestream2_get_be32(&gb);
826  } else {
827  bytestream2_skip(&gb, size + size & 1);
828  }
829  }
830  return 10;
831 }
832 
834  AVPacket *pkt)
835 {
836  IffDemuxContext *iff = s->priv_data;
837  AVIOContext *pb = s->pb;
838  AVStream *st = s->streams[0];
839  int ret;
840  int64_t pos = avio_tell(pb);
841 
842  if (avio_feof(pb))
843  return AVERROR_EOF;
844  if (st->codecpar->codec_tag != ID_ANIM && pos >= iff->body_end)
845  return AVERROR_EOF;
846 
847  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
848  if (st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) {
849  ret = av_get_packet(pb, pkt, FFMIN(iff->body_end - pos, 1024 * st->codecpar->block_align));
850  } else if (st->codecpar->codec_tag == ID_DST) {
851  return read_dst_frame(s, pkt);
852  } else {
853  if (iff->body_size > INT_MAX || !iff->body_size)
854  return AVERROR_INVALIDDATA;
855  ret = av_get_packet(pb, pkt, iff->body_size);
856  }
857  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
858  st->codecpar->codec_tag == ID_ANIM) {
859  uint64_t data_size, orig_pos;
860  uint32_t chunk_id, chunk_id2;
861 
862  while (!avio_feof(pb)) {
863  if (avio_feof(pb))
864  return AVERROR_EOF;
865 
866  orig_pos = avio_tell(pb);
867  chunk_id = avio_rl32(pb);
868  data_size = avio_rb32(pb);
869  chunk_id2 = avio_rl32(pb);
870 
871  if (chunk_id == ID_FORM &&
872  chunk_id2 == ID_ILBM) {
873  avio_skip(pb, -4);
874  break;
875  } else if (chunk_id == ID_FORM &&
876  chunk_id2 == ID_ANIM) {
877  continue;
878  } else {
879  avio_skip(pb, data_size);
880  }
881  }
882  ret = av_get_packet(pb, pkt, data_size);
883  pkt->pos = orig_pos;
885  if (pos == 12)
887  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
888  st->codecpar->codec_tag != ID_ANIM) {
889  if (iff->body_size > INT_MAX || !iff->body_size)
890  return AVERROR_INVALIDDATA;
891  ret = av_get_packet(pb, pkt, iff->body_size);
892  pkt->pos = pos;
893  if (pos == iff->body_pos)
895  } else {
896  av_assert0(0);
897  }
898 
899  if (ret < 0)
900  return ret;
901  pkt->stream_index = 0;
902  return ret;
903 }
904 
906  .p.name = "iff",
907  .p.long_name = NULL_IF_CONFIG_SMALL("IFF (Interchange File Format)"),
909  .priv_data_size = sizeof(IffDemuxContext),
913 };
IffDemuxContext::svx8_compression
svx8_compression_type svx8_compression
Definition: iff.c:114
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:415
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:83
ID_CMAP
#define ID_CMAP
Definition: iff.c:57
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:52
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:61
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
int64_t
long long int64_t
Definition: coverity.c:34
ID_CHAN
#define ID_CHAN
Definition: iff.c:51
ID_DEEP
#define ID_DEEP
Definition: iff.c:59
ID_DSTF
#define ID_DSTF
Definition: iff.c:65
id3v2.h
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:28
DSD_MRGT
#define DSD_MRGT
Definition: iff.c:176
AVPacket::data
uint8_t * data
Definition: packet.h:522
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:1139
deep_bgra
static const uint8_t deep_bgra[]
Definition: iff.c:414
IffDemuxContext::masking
unsigned masking
masking method used
Definition: iff.c:122
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:540
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:811
IffDemuxContext::body_size
uint32_t body_size
Definition: iff.c:113
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:53
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:577
COMP_NONE
@ COMP_NONE
Definition: iff.c:104
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:55
ID_TEXT
#define ID_TEXT
Definition: iff.c:81
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:84
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:203
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:72
parse_dsd_prop
static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
Definition: iff.c:250
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:1192
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:550
avassert.h
avio_rb32
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:760
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
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:41
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:198
DSD_RS
#define DSD_RS
Definition: iff.c:179
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:418
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:833
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:123
DSD_C
#define DSD_C
Definition: iff.c:177
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:40
ID_DPEL
#define ID_DPEL
Definition: iff.c:85
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:43
AV_CODEC_ID_PCM_MULAW
@ AV_CODEC_ID_PCM_MULAW
Definition: codec_id.h:334
ID_AUTH
#define ID_AUTH
Definition: iff.c:75
ID_BMHD
#define ID_BMHD
Definition: iff.c:54
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:174
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:180
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:66
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:1161
avio_rb64
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:907
dsd_codec_tags
static const AVCodecTag dsd_codec_tags[]
Definition: iff.c:166
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:109
ID_ACBM
#define ID_ACBM
Definition: iff.c:58
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:70
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:82
dsd_history_comment
static const char * dsd_history_comment[]
Definition: iff.c:209
avio_rl32
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:729
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:523
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:106
IffDemuxContext::flags
unsigned flags
1 for EHB, 0 is no extra half darkening
Definition: iff.c:120
ff_codec_get_id
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:145
iff_probe
static int iff_probe(const AVProbeData *p)
Definition: iff.c:146
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:67
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:56
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:354
ID_MHDR
#define ID_MHDR
Definition: iff.c:46
DSD_MLFT
#define DSD_MLFT
Definition: iff.c:175
avio_r8
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:602
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:528
version
version
Definition: libkvazaar.c:321
ID_FRM8
#define ID_FRM8
Definition: iff.c:73
deep_rgb24
static const uint8_t deep_rgb24[]
Definition: iff.c:412
DSDLayoutDesc::layout
AVChannelLayout layout
Definition: iff.c:187
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:105
IffDemuxContext::pts
int64_t pts
Definition: iff.c:124
IffDemuxContext::maud_bits
unsigned maud_bits
Definition: iff.c:115
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:255
get_metadata
static int get_metadata(AVFormatContext *s, const char *const tag, const unsigned data_size)
Definition: iff.c:128
AVCodecParameters::height
int height
Definition: codec_par.h:135
ID_RGB8
#define ID_RGB8
Definition: iff.c:60
AVCodecParameters::block_align
int block_align
Audio only.
Definition: codec_par.h:191
ID_DST
#define ID_DST
Definition: iff.c:63
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
IffDemuxContext::bitmap_compression
unsigned bitmap_compression
delta compression method used
Definition: iff.c:117
IffDemuxContext::body_pos
int64_t body_pos
Definition: iff.c:111
ID_VHDR
#define ID_VHDR
Definition: iff.c:48
ID_DLOC
#define ID_DLOC
Definition: iff.c:86
demux.h
ID_DSD
#define ID_DSD
Definition: iff.c:62
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:103
ID_ANHD
#define ID_ANHD
Definition: iff.c:68
tag
uint32_t tag
Definition: movenc.c:1791
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:188
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:230
avio_rb16
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:745
pos
unsigned int pos
Definition: spdifenc.c:413
avformat.h
dict.h
DSD_SLFT
#define DSD_SLFT
Definition: iff.c:173
av_sat_add64
#define av_sat_add64
Definition: common.h:140
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:118
dsd_5point1
static const uint32_t dsd_5point1[]
Definition: iff.c:184
DSD_LS
#define DSD_LS
Definition: iff.c:178
ID_TVDC
#define ID_TVDC
Definition: iff.c:87
channel_layout.h
deep_abgr
static const uint8_t deep_abgr[]
Definition: iff.c:416
parse_dsd_diin
static int parse_dsd_diin(AVFormatContext *s, AVStream *st, uint64_t eof)
Definition: iff.c:217
AVRational::den
int den
Denominator.
Definition: rational.h:60
ID_MDAT
#define ID_MDAT
Definition: iff.c:47
avio_read
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:611
ID_MAUD
#define ID_MAUD
Definition: iff.c:45
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:112
AVPacket::stream_index
int stream_index
Definition: packet.h:524
COMP_EXP
@ COMP_EXP
Definition: iff.c:106
avio_skip
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:317
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:44
ID_COPYRIGHT
#define ID_COPYRIGHT
Definition: iff.c:77
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:119
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:183
AVPacket
This structure stores compressed data.
Definition: packet.h:499
svx8_compression_type
svx8_compression_type
Definition: iff.c:103
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:101
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:1145
deep_rgba
static const uint8_t deep_rgba[]
Definition: iff.c:413
AVPacket::pos
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:542
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:409
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:121
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:197
dsd_channel_layout
static const DSDLayoutDesc dsd_channel_layout[]
Definition: iff.c:191
IffDemuxContext::body_end
int64_t body_end
Definition: iff.c:112
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:905
dsd_stereo
static const uint32_t dsd_stereo[]
Definition: iff.c:182
snprintf
#define snprintf
Definition: snprintf.h:34
IffDemuxContext::is_64bit
int is_64bit
chunk size is 64-bit
Definition: iff.c:110
IffDemuxContext::maud_compression
unsigned maud_compression
Definition: iff.c:116
DSDLayoutDesc
Definition: iff.c:186
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:239
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:345
ID_ANNO
#define ID_ANNO
Definition: iff.c:74
ID_NAME
#define ID_NAME
Definition: iff.c:80