FFmpeg: libavformat/iff.c Source File

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"
34 #include "libavutil/channel_layout.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 {
105   COMP_NONE,
106   COMP_FIB,
107   COMP_EXP
108 } svx8_compression_type;
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;
115   svx8_compression_type svx8_compression;
116   unsigned maud_bits;
117   unsigned maud_compression;
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;
126 } IffDemuxContext;
127 
128 /* Metadata string read */
129  static int get_metadata(AVFormatContext *s,
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[] = {
168  { AV_CODEC_ID_DSD_MSBF, ID_DSD },
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 {
188   AVChannelLayout layout;
189   const uint32_t * dsd_layout;
190 } DSDLayoutDesc;
191 
192  static const DSDLayoutDesc dsd_channel_layout[] = {
193  { AV_CHANNEL_LAYOUT_STEREO, dsd_stereo },
194  { AV_CHANNEL_LAYOUT_5POINT0, dsd_5point0 },
195  { AV_CHANNEL_LAYOUT_5POINT1, dsd_5point1 },
196 };
197 
198  static const AVChannelLayout dsd_loudspeaker_config[] = {
199  AV_CHANNEL_LAYOUT_STEREO,
200  { 0 }, { 0 },
201  AV_CHANNEL_LAYOUT_5POINT0, AV_CHANNEL_LAYOUT_5POINT1,
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;
281  st->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
282  st->codecpar->ch_layout.nb_channels = avio_rb16(pb);
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);
305  st->codecpar->codec_id = ff_codec_get_id(dsd_codec_tags, tag);
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) {
341  if (config < FF_ARRAY_ELEMS(dsd_loudspeaker_config))
342  st->codecpar->ch_layout = dsd_loudspeaker_config[config];
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 
355  static int read_dst_frame(AVFormatContext *s, AVPacket *pkt)
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  if (s->nb_streams < 1)
364  return AVERROR_INVALIDDATA;
365 
366  while (!avio_feof(pb)) {
367  chunk_pos = avio_tell(pb);
368  if (chunk_pos >= iff->body_end)
369  return AVERROR_EOF;
370 
371  chunk_id = avio_rl32(pb);
372  data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
373  data_pos = avio_tell(pb);
374 
375  if (data_size < 1 || data_size >= INT64_MAX)
376  return AVERROR_INVALIDDATA;
377 
378  switch (chunk_id) {
379  case ID_DSTF:
380  if (!pkt) {
381  iff->body_pos = avio_tell(pb) - (iff->is_64bit ? 12 : 8);
382  iff->body_size = iff->body_end - iff->body_pos;
383  return 0;
384  }
385  ret = av_get_packet(pb, pkt, data_size);
386  if (ret < 0)
387  return ret;
388  if (data_size & 1)
389  avio_skip(pb, 1);
390  pkt->flags |= AV_PKT_FLAG_KEY;
391  pkt->stream_index = 0;
392  pkt->duration = s->streams[0]->codecpar->sample_rate / 75;
393  pkt->pos = chunk_pos;
394 
395  chunk_pos = avio_tell(pb);
396  if (chunk_pos >= iff->body_end)
397  return 0;
398 
399  avio_seek(pb, chunk_pos, SEEK_SET);
400  return 0;
401 
402  case ID_FRTE:
403  if (data_size < 4)
404  return AVERROR_INVALIDDATA;
405  s->streams[0]->duration = avio_rb32(pb) * (uint64_t)s->streams[0]->codecpar->sample_rate / 75;
406 
407  break;
408  }
409 
410  avio_skip(pb, data_size - (avio_tell(pb) - data_pos) + (data_size & 1));
411  }
412 
413  return ret;
414 }
415 
416  static const uint8_t deep_rgb24[] = {0, 0, 0, 3, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
417  static const uint8_t deep_rgba[] = {0, 0, 0, 4, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
418  static const uint8_t deep_bgra[] = {0, 0, 0, 4, 0, 3, 0, 8, 0, 2, 0, 8, 0, 1, 0, 8};
419  static const uint8_t deep_argb[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 1, 0, 8, 0, 2, 0, 8};
420  static const uint8_t deep_abgr[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 3, 0, 8, 0, 2, 0, 8};
421 
422  static int iff_read_header(AVFormatContext *s)
423 {
424  IffDemuxContext *iff = s->priv_data;
425  AVIOContext *pb = s->pb;
426  AVStream *st;
427  uint8_t *buf;
428  uint32_t chunk_id;
429  uint64_t data_size;
430  uint32_t screenmode = 0, num, den;
431  unsigned transparency = 0;
432  unsigned masking = 0; // no mask
433  uint8_t fmt[16];
434  int fmt_size;
435 
436  st = avformat_new_stream(s, NULL);
437  if (!st)
438  return AVERROR(ENOMEM);
439 
440  st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
441  iff->is_64bit = avio_rl32(pb) == ID_FRM8;
442  avio_skip(pb, iff->is_64bit ? 8 : 4);
443  // codec_tag used by ByteRun1 decoder to distinguish progressive (PBM) and interlaced (ILBM) content
444  st->codecpar->codec_tag = avio_rl32(pb);
445  if (st->codecpar->codec_tag == ID_ANIM) {
446  avio_skip(pb, 12);
447  }
448  iff->bitmap_compression = -1;
449  iff->svx8_compression = -1;
450  iff->maud_bits = -1;
451  iff->maud_compression = -1;
452 
453  while(!avio_feof(pb)) {
454  uint64_t orig_pos;
455  int res;
456  const char *metadata_tag = NULL;
457  int version, nb_comments, i;
458  chunk_id = avio_rl32(pb);
459  data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
460  orig_pos = avio_tell(pb);
461 
462  if (data_size >= INT64_MAX)
463  return AVERROR_INVALIDDATA;
464 
465  switch(chunk_id) {
466  case ID_VHDR:
467  st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
468 
469  if (data_size < 14)
470  return AVERROR_INVALIDDATA;
471  avio_skip(pb, 12);
472  st->codecpar->sample_rate = avio_rb16(pb);
473  if (data_size >= 16) {
474  avio_skip(pb, 1);
475  iff->svx8_compression = avio_r8(pb);
476  }
477  break;
478 
479  case ID_MHDR:
480  st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
481 
482  if (data_size < 32)
483  return AVERROR_INVALIDDATA;
484  avio_skip(pb, 4);
485  iff->maud_bits = avio_rb16(pb);
486  avio_skip(pb, 2);
487  num = avio_rb32(pb);
488  den = avio_rb16(pb);
489  if (!den)
490  return AVERROR_INVALIDDATA;
491  avio_skip(pb, 2);
492  st->codecpar->sample_rate = num / den;
493  st->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
494  st->codecpar->ch_layout.nb_channels = avio_rb16(pb);
495  iff->maud_compression = avio_rb16(pb);
496  if (st->codecpar->ch_layout.nb_channels == 1)
497  st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
498  else if (st->codecpar->ch_layout.nb_channels == 2)
499  st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
500  else if (st->codecpar->ch_layout.nb_channels == 0)
501  return AVERROR_INVALIDDATA;
502  break;
503 
504  case ID_ABIT:
505  case ID_BODY:
506  case ID_DBOD:
507  case ID_DSD:
508  case ID_DST:
509  case ID_MDAT:
510  iff->body_pos = avio_tell(pb);
511  if (iff->body_pos < 0 || iff->body_pos + data_size > INT64_MAX)
512  return AVERROR_INVALIDDATA;
513 
514  iff->body_end = iff->body_pos + data_size;
515  iff->body_size = data_size;
516  if (chunk_id == ID_DST) {
517  int ret = read_dst_frame(s, NULL);
518  if (ret < 0)
519  return ret;
520  }
521  break;
522 
523  case ID_CHAN:
524  if (data_size < 4)
525  return AVERROR_INVALIDDATA;
526  if (avio_rb32(pb) < 6) {
527  st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
528  } else {
529  st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
530  }
531  break;
532 
533  case ID_CAMG:
534  if (data_size < 4)
535  return AVERROR_INVALIDDATA;
536  screenmode = avio_rb32(pb);
537  break;
538 
539  case ID_CMAP:
540  if (data_size < 3 || data_size > 768 || data_size % 3) {
541  av_log(s, AV_LOG_ERROR, "Invalid CMAP chunk size %"PRIu64"\n",
542  data_size);
543  return AVERROR_INVALIDDATA;
544  }
545  res = ff_alloc_extradata(st->codecpar,
546  data_size + IFF_EXTRA_VIDEO_SIZE);
547  if (res < 0)
548  return res;
549  if (avio_read(pb, st->codecpar->extradata + IFF_EXTRA_VIDEO_SIZE, data_size) < 0) {
550  av_freep(&st->codecpar->extradata);
551  st->codecpar->extradata_size = 0;
552  return AVERROR(EIO);
553  }
554  break;
555 
556  case ID_BMHD:
557  st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
558  if (data_size <= 8)
559  return AVERROR_INVALIDDATA;
560  st->codecpar->width = avio_rb16(pb);
561  st->codecpar->height = avio_rb16(pb);
562  avio_skip(pb, 4); // x, y offset
563  st->codecpar->bits_per_coded_sample = avio_r8(pb);
564  if (data_size >= 10)
565  masking = avio_r8(pb);
566  if (data_size >= 11)
567  iff->bitmap_compression = avio_r8(pb);
568  if (data_size >= 14) {
569  avio_skip(pb, 1); // padding
570  transparency = avio_rb16(pb);
571  }
572  if (data_size >= 16) {
573  st->sample_aspect_ratio.num = avio_r8(pb);
574  st->sample_aspect_ratio.den = avio_r8(pb);
575  }
576  break;
577 
578  case ID_ANHD:
579  break;
580 
581  case ID_DPAN:
582  avio_skip(pb, 2);
583  st->duration = avio_rb16(pb);
584  break;
585 
586  case ID_DPEL:
587  if (data_size < 4 || (data_size & 3))
588  return AVERROR_INVALIDDATA;
589  if ((fmt_size = avio_read(pb, fmt, sizeof(fmt))) < 0)
590  return fmt_size;
591  if (fmt_size == sizeof(deep_rgb24) && !memcmp(fmt, deep_rgb24, sizeof(deep_rgb24)))
592  st->codecpar->format = AV_PIX_FMT_RGB24;
593  else if (fmt_size == sizeof(deep_rgba) && !memcmp(fmt, deep_rgba, sizeof(deep_rgba)))
594  st->codecpar->format = AV_PIX_FMT_RGBA;
595  else if (fmt_size == sizeof(deep_bgra) && !memcmp(fmt, deep_bgra, sizeof(deep_bgra)))
596  st->codecpar->format = AV_PIX_FMT_BGRA;
597  else if (fmt_size == sizeof(deep_argb) && !memcmp(fmt, deep_argb, sizeof(deep_argb)))
598  st->codecpar->format = AV_PIX_FMT_ARGB;
599  else if (fmt_size == sizeof(deep_abgr) && !memcmp(fmt, deep_abgr, sizeof(deep_abgr)))
600  st->codecpar->format = AV_PIX_FMT_ABGR;
601  else {
602  avpriv_request_sample(s, "color format %.16s", fmt);
603  return AVERROR_PATCHWELCOME;
604  }
605  break;
606 
607  case ID_DGBL:
608  st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
609  if (data_size < 8)
610  return AVERROR_INVALIDDATA;
611  st->codecpar->width = avio_rb16(pb);
612  st->codecpar->height = avio_rb16(pb);
613  iff->bitmap_compression = avio_rb16(pb);
614  st->sample_aspect_ratio.num = avio_r8(pb);
615  st->sample_aspect_ratio.den = avio_r8(pb);
616  st->codecpar->bits_per_coded_sample = 24;
617  break;
618 
619  case ID_DLOC:
620  if (data_size < 4)
621  return AVERROR_INVALIDDATA;
622  st->codecpar->width = avio_rb16(pb);
623  st->codecpar->height = avio_rb16(pb);
624  break;
625 
626  case ID_TVDC:
627  if (data_size < sizeof(iff->tvdc))
628  return AVERROR_INVALIDDATA;
629  res = avio_read(pb, iff->tvdc, sizeof(iff->tvdc));
630  if (res < 0)
631  return res;
632  break;
633 
634  case ID_ANNO:
635  case ID_TEXT: metadata_tag = "comment"; break;
636  case ID_AUTH: metadata_tag = "artist"; break;
637  case ID_COPYRIGHT: metadata_tag = "copyright"; break;
638  case ID_NAME: metadata_tag = "title"; break;
639 
640  /* DSD tags */
641 
642  case MKTAG('F','V','E','R'):
643  if (data_size < 4)
644  return AVERROR_INVALIDDATA;
645  version = avio_rb32(pb);
646  av_log(s, AV_LOG_DEBUG, "DSIFF v%d.%d.%d.%d\n",version >> 24, (version >> 16) & 0xFF, (version >> 8) & 0xFF, version & 0xFF);
647  st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
648  break;
649 
650  case MKTAG('D','I','I','N'):
651  res = parse_dsd_diin(s, st, orig_pos + data_size);
652  if (res < 0)
653  return res;
654  break;
655 
656  case MKTAG('P','R','O','P'):
657  if (data_size < 4)
658  return AVERROR_INVALIDDATA;
659  if (avio_rl32(pb) != MKTAG('S','N','D',' ')) {
660  avpriv_request_sample(s, "unknown property type");
661  break;
662  }
663  res = parse_dsd_prop(s, st, orig_pos + data_size);
664  if (res < 0)
665  return res;
666  break;
667 
668  case MKTAG('C','O','M','T'):
669  if (data_size < 2)
670  return AVERROR_INVALIDDATA;
671  nb_comments = avio_rb16(pb);
672  for (i = 0; i < nb_comments; i++) {
673  int year, mon, day, hour, min, type, ref;
674  char tmp[24];
675  const char *tag;
676  int metadata_size;
677 
678  year = avio_rb16(pb);
679  mon = avio_r8(pb);
680  day = avio_r8(pb);
681  hour = avio_r8(pb);
682  min = avio_r8(pb);
683  snprintf(tmp, sizeof(tmp), "%04d-%02d-%02d %02d:%02d", year, mon, day, hour, min);
684  av_dict_set(&st->metadata, "comment_time", tmp, 0);
685 
686  type = avio_rb16(pb);
687  ref = avio_rb16(pb);
688  switch (type) {
689  case 1:
690  if (!i)
691  tag = "channel_comment";
692  else {
693  snprintf(tmp, sizeof(tmp), "channel%d_comment", ref);
694  tag = tmp;
695  }
696  break;
697  case 2:
698  tag = ref < FF_ARRAY_ELEMS(dsd_source_comment) ? dsd_source_comment[ref] : "source_comment";
699  break;
700  case 3:
701  tag = ref < FF_ARRAY_ELEMS(dsd_history_comment) ? dsd_history_comment[ref] : "file_history";
702  break;
703  default:
704  tag = "comment";
705  }
706 
707  metadata_size = avio_rb32(pb);
708  if ((res = get_metadata(s, tag, metadata_size)) < 0) {
709  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", tag);
710  return res;
711  }
712 
713  if (metadata_size & 1)
714  avio_skip(pb, 1);
715  }
716  break;
717  }
718 
719  if (metadata_tag) {
720  if ((res = get_metadata(s, metadata_tag, data_size)) < 0) {
721  av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
722  return res;
723  }
724  }
725  avio_skip(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1));
726  }
727 
728  if (st->codecpar->codec_tag == ID_ANIM)
729  avio_seek(pb, 12, SEEK_SET);
730  else
731  avio_seek(pb, iff->body_pos, SEEK_SET);
732 
733  switch(st->codecpar->codec_type) {
734  case AVMEDIA_TYPE_AUDIO:
735  avpriv_set_pts_info(st, 32, 1, st->codecpar->sample_rate);
736 
737  if (st->codecpar->codec_tag == ID_16SV)
738  st->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE_PLANAR;
739  else if (st->codecpar->codec_tag == ID_MAUD) {
740  if (iff->maud_bits == 8 && !iff->maud_compression) {
741  st->codecpar->codec_id = AV_CODEC_ID_PCM_U8;
742  } else if (iff->maud_bits == 16 && !iff->maud_compression) {
743  st->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE;
744  } else if (iff->maud_bits == 8 && iff->maud_compression == 2) {
745  st->codecpar->codec_id = AV_CODEC_ID_PCM_ALAW;
746  } else if (iff->maud_bits == 8 && iff->maud_compression == 3) {
747  st->codecpar->codec_id = AV_CODEC_ID_PCM_MULAW;
748  } else {
749  avpriv_request_sample(s, "compression %d and bit depth %d", iff->maud_compression, iff->maud_bits);
750  return AVERROR_PATCHWELCOME;
751  }
752  } else if (st->codecpar->codec_tag != ID_DSD &&
753  st->codecpar->codec_tag != ID_DST) {
754  switch (iff->svx8_compression) {
755  case COMP_NONE:
756  st->codecpar->codec_id = AV_CODEC_ID_PCM_S8_PLANAR;
757  break;
758  case COMP_FIB:
759  st->codecpar->codec_id = AV_CODEC_ID_8SVX_FIB;
760  break;
761  case COMP_EXP:
762  st->codecpar->codec_id = AV_CODEC_ID_8SVX_EXP;
763  break;
764  default:
765  av_log(s, AV_LOG_ERROR,
766  "Unknown SVX8 compression method '%d'\n", iff->svx8_compression);
767  return -1;
768  }
769  }
770 
771  st->codecpar->bits_per_coded_sample = av_get_bits_per_sample(st->codecpar->codec_id);
772  st->codecpar->bit_rate = (int64_t)st->codecpar->ch_layout.nb_channels *
773  st->codecpar->sample_rate *
774  st->codecpar->bits_per_coded_sample;
775  st->codecpar->block_align = st->codecpar->ch_layout.nb_channels *
776  st->codecpar->bits_per_coded_sample;
777  if ((st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) && st->codecpar->block_align <= 0)
778  return AVERROR_INVALIDDATA;
779  break;
780 
781  case AVMEDIA_TYPE_VIDEO:
782  iff->bpp = st->codecpar->bits_per_coded_sample;
783  if (st->codecpar->codec_tag == ID_ANIM)
784  avpriv_set_pts_info(st, 32, 1, 60);
785  if ((screenmode & 0x800 /* Hold And Modify */) && iff->bpp <= 8) {
786  iff->ham = iff->bpp > 6 ? 6 : 4;
787  st->codecpar->bits_per_coded_sample = 24;
788  }
789  iff->flags = (screenmode & 0x80 /* Extra HalfBrite */) && iff->bpp <= 8;
790  iff->masking = masking;
791  iff->transparency = transparency;
792 
793  if (!st->codecpar->extradata) {
794  int ret = ff_alloc_extradata(st->codecpar, IFF_EXTRA_VIDEO_SIZE);
795  if (ret < 0)
796  return ret;
797  }
798  av_assert0(st->codecpar->extradata_size >= IFF_EXTRA_VIDEO_SIZE);
799  buf = st->codecpar->extradata;
800  bytestream_put_be16(&buf, IFF_EXTRA_VIDEO_SIZE);
801  bytestream_put_byte(&buf, iff->bitmap_compression);
802  bytestream_put_byte(&buf, iff->bpp);
803  bytestream_put_byte(&buf, iff->ham);
804  bytestream_put_byte(&buf, iff->flags);
805  bytestream_put_be16(&buf, iff->transparency);
806  bytestream_put_byte(&buf, iff->masking);
807  bytestream_put_buffer(&buf, iff->tvdc, sizeof(iff->tvdc));
808  st->codecpar->codec_id = AV_CODEC_ID_IFF_ILBM;
809  break;
810  default:
811  return -1;
812  }
813 
814  return 0;
815 }
816 
817  static unsigned get_anim_duration(uint8_t *buf, int size)
818 {
819  GetByteContext gb;
820 
821  bytestream2_init(&gb, buf, size);
822  bytestream2_skip(&gb, 4);
823  while (bytestream2_get_bytes_left(&gb) > 8) {
824  unsigned chunk = bytestream2_get_le32(&gb);
825  unsigned size = bytestream2_get_be32(&gb);
826 
827  if (chunk == ID_ANHD) {
828  if (size < 40)
829  break;
830  bytestream2_skip(&gb, 14);
831  return bytestream2_get_be32(&gb);
832  } else {
833  bytestream2_skip(&gb, size + size & 1);
834  }
835  }
836  return 10;
837 }
838 
839  static int iff_read_packet(AVFormatContext *s,
840  AVPacket *pkt)
841 {
842  IffDemuxContext *iff = s->priv_data;
843  AVIOContext *pb = s->pb;
844  AVStream *st = s->streams[0];
845  int ret;
846  int64_t pos = avio_tell(pb);
847 
848  if (avio_feof(pb))
849  return AVERROR_EOF;
850  if (st->codecpar->codec_tag != ID_ANIM && pos >= iff->body_end)
851  return AVERROR_EOF;
852 
853  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
854  if (st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) {
855  ret = av_get_packet(pb, pkt, FFMIN(iff->body_end - pos, 1024 * st->codecpar->block_align));
856  } else if (st->codecpar->codec_tag == ID_DST) {
857  return read_dst_frame(s, pkt);
858  } else {
859  if (iff->body_size > INT_MAX || !iff->body_size)
860  return AVERROR_INVALIDDATA;
861  ret = av_get_packet(pb, pkt, iff->body_size);
862  }
863  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
864  st->codecpar->codec_tag == ID_ANIM) {
865  uint64_t data_size, orig_pos;
866  uint32_t chunk_id, chunk_id2;
867 
868  while (!avio_feof(pb)) {
869  if (avio_feof(pb))
870  return AVERROR_EOF;
871 
872  orig_pos = avio_tell(pb);
873  chunk_id = avio_rl32(pb);
874  data_size = avio_rb32(pb);
875  chunk_id2 = avio_rl32(pb);
876 
877  if (chunk_id == ID_FORM &&
878  chunk_id2 == ID_ILBM) {
879  avio_skip(pb, -4);
880  break;
881  } else if (chunk_id == ID_FORM &&
882  chunk_id2 == ID_ANIM) {
883  continue;
884  } else {
885  avio_skip(pb, data_size);
886  }
887  }
888  ret = av_get_packet(pb, pkt, data_size);
889  pkt->pos = orig_pos;
890  pkt->duration = get_anim_duration(pkt->data, pkt->size);
891  if (pos == 12)
892  pkt->flags |= AV_PKT_FLAG_KEY;
893  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
894  st->codecpar->codec_tag != ID_ANIM) {
895  if (iff->body_size > INT_MAX || !iff->body_size)
896  return AVERROR_INVALIDDATA;
897  ret = av_get_packet(pb, pkt, iff->body_size);
898  pkt->pos = pos;
899  if (pos == iff->body_pos)
900  pkt->flags |= AV_PKT_FLAG_KEY;
901  } else {
902  av_assert0(0);
903  }
904 
905  if (ret < 0)
906  return ret;
907  pkt->stream_index = 0;
908  return ret;
909 }
910 
911  const FFInputFormat ff_iff_demuxer = {
912  .p.name = "iff",
913  .p.long_name = NULL_IF_CONFIG_SMALL("IFF (Interchange File Format)"),
914  .p.flags = AVFMT_GENERIC_INDEX | AVFMT_NO_BYTE_SEEK,
915  .priv_data_size = sizeof(IffDemuxContext),
916  .read_probe = iff_probe,
917  .read_header = iff_read_header,
918  .read_packet = iff_read_packet,
919 };
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:419
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:387
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
int64_t
long long int64_t
Definition: coverity.c:34
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:539
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:418
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:557
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:316
get_anim_duration
static unsigned get_anim_duration(uint8_t *buf, int size)
Definition: iff.c:817
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:321
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:594
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:860
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:807
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:550
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:422
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:839
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:116
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:1287
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:771
read_header
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:535
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:828
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:540
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:311
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:826
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:545
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:416
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:1879
ret
ret
Definition: filter_design.txt:187
AVStream
Stream structure.
Definition: avformat.h:748
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:139
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:420
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:541
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:386
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:516
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:417
AVPacket::pos
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:559
FFInputFormat
Definition: demux.h:37
AV_CODEC_ID_PCM_S8_PLANAR
@ AV_CODEC_ID_PCM_S8_PLANAR
Definition: codec_id.h:355
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:396
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:397
ff_iff_demuxer
const FFInputFormat ff_iff_demuxer
Definition: iff.c:911
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
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