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 "libavcodec/bytestream.h"
38 #include "avformat.h"
39 #include "id3v2.h"
40 #include "internal.h"
41
42 #define ID_8SVX MKTAG('8','S','V','X')
43 #define ID_16SV MKTAG('1','6','S','V')
44 #define ID_MAUD MKTAG('M','A','U','D')
45 #define ID_MHDR MKTAG('M','H','D','R')
46 #define ID_MDAT MKTAG('M','D','A','T')
47 #define ID_VHDR MKTAG('V','H','D','R')
48 #define ID_ATAK MKTAG('A','T','A','K')
49 #define ID_RLSE MKTAG('R','L','S','E')
50 #define ID_CHAN MKTAG('C','H','A','N')
51 #define ID_PBM MKTAG('P','B','M',' ')
52 #define ID_ILBM MKTAG('I','L','B','M')
53 #define ID_BMHD MKTAG('B','M','H','D')
54 #define ID_DGBL MKTAG('D','G','B','L')
55 #define ID_CAMG MKTAG('C','A','M','G')
56 #define ID_CMAP MKTAG('C','M','A','P')
57 #define ID_ACBM MKTAG('A','C','B','M')
58 #define ID_DEEP MKTAG('D','E','E','P')
59 #define ID_RGB8 MKTAG('R','G','B','8')
60 #define ID_RGBN MKTAG('R','G','B','N')
61 #define ID_DSD MKTAG('D','S','D',' ')
62 #define ID_DST MKTAG('D','S','T',' ')
63 #define ID_DSTC MKTAG('D','S','T','C')
64 #define ID_DSTF MKTAG('D','S','T','F')
65 #define ID_FRTE MKTAG('F','R','T','E')
66 #define ID_ANIM MKTAG('A','N','I','M')
67 #define ID_ANHD MKTAG('A','N','H','D')
68 #define ID_DLTA MKTAG('D','L','T','A')
69 #define ID_DPAN MKTAG('D','P','A','N')
70
71 #define ID_FORM MKTAG('F','O','R','M')
72 #define ID_FRM8 MKTAG('F','R','M','8')
73 #define ID_ANNO MKTAG('A','N','N','O')
74 #define ID_AUTH MKTAG('A','U','T','H')
75 #define ID_CHRS MKTAG('C','H','R','S')
76 #define ID_COPYRIGHT MKTAG('(','c',')',' ')
77 #define ID_CSET MKTAG('C','S','E','T')
78 #define ID_FVER MKTAG('F','V','E','R')
79 #define ID_NAME MKTAG('N','A','M','E')
80 #define ID_TEXT MKTAG('T','E','X','T')
81 #define ID_ABIT MKTAG('A','B','I','T')
82 #define ID_BODY MKTAG('B','O','D','Y')
83 #define ID_DBOD MKTAG('D','B','O','D')
84 #define ID_DPEL MKTAG('D','P','E','L')
85 #define ID_DLOC MKTAG('D','L','O','C')
86 #define ID_TVDC MKTAG('T','V','D','C')
87
88 #define LEFT 2
89 #define RIGHT 4
90 #define STEREO 6
91
92 /**
93 * This number of bytes if added at the beginning of each AVPacket
94 * which contain additional information about video properties
95 * which has to be shared between demuxer and decoder.
96 * This number may change between frames, e.g. the demuxer might
97 * set it to smallest possible size of 2 to indicate that there's
98 * no extradata changing in this frame.
99 */
100 #define IFF_EXTRA_VIDEO_SIZE 41
101
102 typedef enum {
103 COMP_NONE,
104 COMP_FIB,
105 COMP_EXP
106 } svx8_compression_type;
107
108 typedef struct IffDemuxContext {
109 int is_64bit; ///< chunk size is 64-bit
110 int64_t body_pos;
111 int64_t body_end;
112 uint32_t body_size;
113 svx8_compression_type svx8_compression;
114 unsigned maud_bits;
115 unsigned maud_compression;
116 unsigned bitmap_compression; ///< delta compression method used
117 unsigned bpp; ///< bits per plane to decode (differs from bits_per_coded_sample if HAM)
118 unsigned ham; ///< 0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise)
119 unsigned flags; ///< 1 for EHB, 0 is no extra half darkening
120 unsigned transparency; ///< transparency color index in palette
121 unsigned masking; ///< masking method used
122 uint8_t tvdc[32]; ///< TVDC lookup table
123 int64_t pts;
124 } IffDemuxContext;
125
126 /* Metadata string read */
get_metadata(AVFormatContext * s,const char * const tag,const unsigned data_size)127 static int get_metadata(AVFormatContext *s,
128 const char *const tag,
129 const unsigned data_size)
130 {
131 uint8_t *buf = ((data_size + 1) == 0) ? NULL : av_malloc(data_size + 1);
132
133 if (!buf)
134 return AVERROR(ENOMEM);
135
136 if (avio_read(s->pb, buf, data_size) != data_size) {
137 av_free(buf);
138 return AVERROR(EIO);
139 }
140 buf[data_size] = 0;
141 av_dict_set(&s->metadata, tag, buf, AV_DICT_DONT_STRDUP_VAL);
142 return 0;
143 }
144
iff_probe(const AVProbeData * p)145 static int iff_probe(const AVProbeData *p)
146 {
147 const uint8_t *d = p->buf;
148
149 if ( (AV_RL32(d) == ID_FORM &&
150 (AV_RL32(d+8) == ID_8SVX ||
151 AV_RL32(d+8) == ID_16SV ||
152 AV_RL32(d+8) == ID_MAUD ||
153 AV_RL32(d+8) == ID_PBM ||
154 AV_RL32(d+8) == ID_ACBM ||
155 AV_RL32(d+8) == ID_DEEP ||
156 AV_RL32(d+8) == ID_ILBM ||
157 AV_RL32(d+8) == ID_RGB8 ||
158 AV_RL32(d+8) == ID_ANIM ||
159 AV_RL32(d+8) == ID_RGBN)) ||
160 (AV_RL32(d) == ID_FRM8 && AV_RL32(d+12) == ID_DSD))
161 return AVPROBE_SCORE_MAX;
162 return 0;
163 }
164
165 static const AVCodecTag dsd_codec_tags[] = {
166 { AV_CODEC_ID_DSD_MSBF, ID_DSD },
167 { AV_CODEC_ID_DST, ID_DST },
168 { AV_CODEC_ID_NONE, 0 },
169 };
170
171
172 #define DSD_SLFT MKTAG('S','L','F','T')
173 #define DSD_SRGT MKTAG('S','R','G','T')
174 #define DSD_MLFT MKTAG('M','L','F','T')
175 #define DSD_MRGT MKTAG('M','R','G','T')
176 #define DSD_C MKTAG('C',' ',' ',' ')
177 #define DSD_LS MKTAG('L','S',' ',' ')
178 #define DSD_RS MKTAG('R','S',' ',' ')
179 #define DSD_LFE MKTAG('L','F','E',' ')
180
181 static const uint32_t dsd_stereo[] = { DSD_SLFT, DSD_SRGT };
182 static const uint32_t dsd_5point0[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LS, DSD_RS };
183 static const uint32_t dsd_5point1[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LFE, DSD_LS, DSD_RS };
184
185 typedef struct {
186 uint64_t layout;
187 const uint32_t * dsd_layout;
188 } DSDLayoutDesc;
189
190 static const DSDLayoutDesc dsd_channel_layout[] = {
191 { AV_CH_LAYOUT_STEREO, dsd_stereo },
192 { AV_CH_LAYOUT_5POINT0, dsd_5point0 },
193 { AV_CH_LAYOUT_5POINT1, dsd_5point1 },
194 };
195
196 static const uint64_t dsd_loudspeaker_config[] = {
197 AV_CH_LAYOUT_STEREO,
198 0, 0,
199 AV_CH_LAYOUT_5POINT0, AV_CH_LAYOUT_5POINT1,
200 };
201
202 static const char * dsd_source_comment[] = {
203 "dsd_source_comment",
204 "analogue_source_comment",
205 "pcm_source_comment",
206 };
207
208 static const char * dsd_history_comment[] = {
209 "general_remark",
210 "operator_name",
211 "creating_machine",
212 "timezone",
213 "file_revision"
214 };
215
parse_dsd_diin(AVFormatContext * s,AVStream * st,uint64_t eof)216 static int parse_dsd_diin(AVFormatContext *s, AVStream *st, uint64_t eof)
217 {
218 AVIOContext *pb = s->pb;
219
220 while (avio_tell(pb) + 12 <= eof && !avio_feof(pb)) {
221 uint32_t tag = avio_rl32(pb);
222 uint64_t size = avio_rb64(pb);
223 uint64_t orig_pos = avio_tell(pb);
224 const char * metadata_tag = NULL;
225
226 if (size >= INT64_MAX)
227 return AVERROR_INVALIDDATA;
228
229 switch(tag) {
230 case MKTAG('D','I','A','R'): metadata_tag = "artist"; break;
231 case MKTAG('D','I','T','I'): metadata_tag = "title"; break;
232 }
233
234 if (metadata_tag && size > 4) {
235 unsigned int tag_size = avio_rb32(pb);
236 int ret = get_metadata(s, metadata_tag, FFMIN(tag_size, size - 4));
237 if (ret < 0) {
238 av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
239 return ret;
240 }
241 }
242
243 avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
244 }
245
246 return 0;
247 }
248
parse_dsd_prop(AVFormatContext * s,AVStream * st,uint64_t eof)249 static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
250 {
251 AVIOContext *pb = s->pb;
252 char abss[24];
253 int hour, min, sec, i, ret, config;
254 int dsd_layout[6];
255 ID3v2ExtraMeta *id3v2_extra_meta;
256
257 while (avio_tell(pb) + 12 <= eof && !avio_feof(pb)) {
258 uint32_t tag = avio_rl32(pb);
259 uint64_t size = avio_rb64(pb);
260 uint64_t orig_pos = avio_tell(pb);
261
262 if (size >= INT64_MAX)
263 return AVERROR_INVALIDDATA;
264
265 switch(tag) {
266 case MKTAG('A','B','S','S'):
267 if (size < 8)
268 return AVERROR_INVALIDDATA;
269 hour = avio_rb16(pb);
270 min = avio_r8(pb);
271 sec = avio_r8(pb);
272 snprintf(abss, sizeof(abss), "%02dh:%02dm:%02ds:%d", hour, min, sec, avio_rb32(pb));
273 av_dict_set(&st->metadata, "absolute_start_time", abss, 0);
274 break;
275
276 case MKTAG('C','H','N','L'):
277 if (size < 2)
278 return AVERROR_INVALIDDATA;
279 st->codecpar->channels = avio_rb16(pb);
280 if (size < 2 + st->codecpar->channels * 4)
281 return AVERROR_INVALIDDATA;
282 st->codecpar->channel_layout = 0;
283 if (st->codecpar->channels > FF_ARRAY_ELEMS(dsd_layout)) {
284 avpriv_request_sample(s, "channel layout");
285 break;
286 }
287 for (i = 0; i < st->codecpar->channels; i++)
288 dsd_layout[i] = avio_rl32(pb);
289 for (i = 0; i < FF_ARRAY_ELEMS(dsd_channel_layout); i++) {
290 const DSDLayoutDesc * d = &dsd_channel_layout[i];
291 if (av_get_channel_layout_nb_channels(d->layout) == st->codecpar->channels &&
292 !memcmp(d->dsd_layout, dsd_layout, st->codecpar->channels * sizeof(uint32_t))) {
293 st->codecpar->channel_layout = d->layout;
294 break;
295 }
296 }
297 break;
298
299 case MKTAG('C','M','P','R'):
300 if (size < 4)
301 return AVERROR_INVALIDDATA;
302 st->codecpar->codec_tag = tag = avio_rl32(pb);
303 st->codecpar->codec_id = ff_codec_get_id(dsd_codec_tags, tag);
304 if (!st->codecpar->codec_id) {
305 av_log(s, AV_LOG_ERROR, "'%s' compression is not supported\n",
306 av_fourcc2str(tag));
307 return AVERROR_PATCHWELCOME;
308 }
309 break;
310
311 case MKTAG('F','S',' ',' '):
312 if (size < 4)
313 return AVERROR_INVALIDDATA;
314 st->codecpar->sample_rate = avio_rb32(pb) / 8;
315 break;
316
317 case MKTAG('I','D','3',' '):
318 id3v2_extra_meta = NULL;
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) {
340 if (config < FF_ARRAY_ELEMS(dsd_loudspeaker_config))
341 st->codecpar->channel_layout = dsd_loudspeaker_config[config];
342 if (!st->codecpar->channel_layout)
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
read_dst_frame(AVFormatContext * s,AVPacket * pkt)354 static int read_dst_frame(AVFormatContext *s, AVPacket *pkt)
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);
386 pkt->flags |= AV_PKT_FLAG_KEY;
387 pkt->stream_index = 0;
388 pkt->duration = 588LL * s->streams[0]->codecpar->sample_rate / 44100;
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) * 588LL * s->streams[0]->codecpar->sample_rate / 44100;
402 break;
403 }
404
405 avio_skip(pb, data_size - (avio_tell(pb) - data_pos) + (data_size & 1));
406 }
407
408 return ret;
409 }
410
411 static const uint8_t deep_rgb24[] = {0, 0, 0, 3, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
412 static const uint8_t deep_rgba[] = {0, 0, 0, 4, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
413 static const uint8_t deep_bgra[] = {0, 0, 0, 4, 0, 3, 0, 8, 0, 2, 0, 8, 0, 1, 0, 8};
414 static const uint8_t deep_argb[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 1, 0, 8, 0, 2, 0, 8};
415 static const uint8_t deep_abgr[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 3, 0, 8, 0, 2, 0, 8};
416
iff_read_header(AVFormatContext * s)417 static int iff_read_header(AVFormatContext *s)
418 {
419 IffDemuxContext *iff = s->priv_data;
420 AVIOContext *pb = s->pb;
421 AVStream *st;
422 uint8_t *buf;
423 uint32_t chunk_id;
424 uint64_t data_size;
425 uint32_t screenmode = 0, num, den;
426 unsigned transparency = 0;
427 unsigned masking = 0; // no mask
428 uint8_t fmt[16];
429 int fmt_size;
430
431 st = avformat_new_stream(s, NULL);
432 if (!st)
433 return AVERROR(ENOMEM);
434
435 st->codecpar->channels = 1;
436 st->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
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:
463 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
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:
476 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
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;
489 st->codecpar->channels = avio_rb16(pb);
490 iff->maud_compression = avio_rb16(pb);
491 if (st->codecpar->channels == 1)
492 st->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
493 else if (st->codecpar->channels == 2)
494 st->codecpar->channel_layout = AV_CH_LAYOUT_STEREO;
495 break;
496
497 case ID_ABIT:
498 case ID_BODY:
499 case ID_DBOD:
500 case ID_DSD:
501 case ID_DST:
502 case ID_MDAT:
503 iff->body_pos = avio_tell(pb);
504 iff->body_end = iff->body_pos + data_size;
505 iff->body_size = data_size;
506 if (chunk_id == ID_DST) {
507 int ret = read_dst_frame(s, NULL);
508 if (ret < 0)
509 return ret;
510 }
511 break;
512
513 case ID_CHAN:
514 if (data_size < 4)
515 return AVERROR_INVALIDDATA;
516 if (avio_rb32(pb) < 6) {
517 st->codecpar->channels = 1;
518 st->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
519 } else {
520 st->codecpar->channels = 2;
521 st->codecpar->channel_layout = AV_CH_LAYOUT_STEREO;
522 }
523 break;
524
525 case ID_CAMG:
526 if (data_size < 4)
527 return AVERROR_INVALIDDATA;
528 screenmode = avio_rb32(pb);
529 break;
530
531 case ID_CMAP:
532 if (data_size < 3 || data_size > 768 || data_size % 3) {
533 av_log(s, AV_LOG_ERROR, "Invalid CMAP chunk size %"PRIu64"\n",
534 data_size);
535 return AVERROR_INVALIDDATA;
536 }
537 res = ff_alloc_extradata(st->codecpar,
538 data_size + IFF_EXTRA_VIDEO_SIZE);
539 if (res < 0)
540 return res;
541 if (avio_read(pb, st->codecpar->extradata + IFF_EXTRA_VIDEO_SIZE, data_size) < 0) {
542 av_freep(&st->codecpar->extradata);
543 st->codecpar->extradata_size = 0;
544 return AVERROR(EIO);
545 }
546 break;
547
548 case ID_BMHD:
549 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
550 if (data_size <= 8)
551 return AVERROR_INVALIDDATA;
552 st->codecpar->width = avio_rb16(pb);
553 st->codecpar->height = avio_rb16(pb);
554 avio_skip(pb, 4); // x, y offset
555 st->codecpar->bits_per_coded_sample = avio_r8(pb);
556 if (data_size >= 10)
557 masking = avio_r8(pb);
558 if (data_size >= 11)
559 iff->bitmap_compression = avio_r8(pb);
560 if (data_size >= 14) {
561 avio_skip(pb, 1); // padding
562 transparency = avio_rb16(pb);
563 }
564 if (data_size >= 16) {
565 st->sample_aspect_ratio.num = avio_r8(pb);
566 st->sample_aspect_ratio.den = avio_r8(pb);
567 }
568 break;
569
570 case ID_ANHD:
571 break;
572
573 case ID_DPAN:
574 avio_skip(pb, 2);
575 st->duration = avio_rb16(pb);
576 break;
577
578 case ID_DPEL:
579 if (data_size < 4 || (data_size & 3))
580 return AVERROR_INVALIDDATA;
581 if ((fmt_size = avio_read(pb, fmt, sizeof(fmt))) < 0)
582 return fmt_size;
583 if (fmt_size == sizeof(deep_rgb24) && !memcmp(fmt, deep_rgb24, sizeof(deep_rgb24)))
584 st->codecpar->format = AV_PIX_FMT_RGB24;
585 else if (fmt_size == sizeof(deep_rgba) && !memcmp(fmt, deep_rgba, sizeof(deep_rgba)))
586 st->codecpar->format = AV_PIX_FMT_RGBA;
587 else if (fmt_size == sizeof(deep_bgra) && !memcmp(fmt, deep_bgra, sizeof(deep_bgra)))
588 st->codecpar->format = AV_PIX_FMT_BGRA;
589 else if (fmt_size == sizeof(deep_argb) && !memcmp(fmt, deep_argb, sizeof(deep_argb)))
590 st->codecpar->format = AV_PIX_FMT_ARGB;
591 else if (fmt_size == sizeof(deep_abgr) && !memcmp(fmt, deep_abgr, sizeof(deep_abgr)))
592 st->codecpar->format = AV_PIX_FMT_ABGR;
593 else {
594 avpriv_request_sample(s, "color format %.16s", fmt);
595 return AVERROR_PATCHWELCOME;
596 }
597 break;
598
599 case ID_DGBL:
600 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
601 if (data_size < 8)
602 return AVERROR_INVALIDDATA;
603 st->codecpar->width = avio_rb16(pb);
604 st->codecpar->height = avio_rb16(pb);
605 iff->bitmap_compression = avio_rb16(pb);
606 st->sample_aspect_ratio.num = avio_r8(pb);
607 st->sample_aspect_ratio.den = avio_r8(pb);
608 st->codecpar->bits_per_coded_sample = 24;
609 break;
610
611 case ID_DLOC:
612 if (data_size < 4)
613 return AVERROR_INVALIDDATA;
614 st->codecpar->width = avio_rb16(pb);
615 st->codecpar->height = avio_rb16(pb);
616 break;
617
618 case ID_TVDC:
619 if (data_size < sizeof(iff->tvdc))
620 return AVERROR_INVALIDDATA;
621 res = avio_read(pb, iff->tvdc, sizeof(iff->tvdc));
622 if (res < 0)
623 return res;
624 break;
625
626 case ID_ANNO:
627 case ID_TEXT: metadata_tag = "comment"; break;
628 case ID_AUTH: metadata_tag = "artist"; break;
629 case ID_COPYRIGHT: metadata_tag = "copyright"; break;
630 case ID_NAME: metadata_tag = "title"; break;
631
632 /* DSD tags */
633
634 case MKTAG('F','V','E','R'):
635 if (data_size < 4)
636 return AVERROR_INVALIDDATA;
637 version = avio_rb32(pb);
638 av_log(s, AV_LOG_DEBUG, "DSIFF v%d.%d.%d.%d\n",version >> 24, (version >> 16) & 0xFF, (version >> 8) & 0xFF, version & 0xFF);
639 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
640 break;
641
642 case MKTAG('D','I','I','N'):
643 res = parse_dsd_diin(s, st, orig_pos + data_size);
644 if (res < 0)
645 return res;
646 break;
647
648 case MKTAG('P','R','O','P'):
649 if (data_size < 4)
650 return AVERROR_INVALIDDATA;
651 if (avio_rl32(pb) != MKTAG('S','N','D',' ')) {
652 avpriv_request_sample(s, "unknown property type");
653 break;
654 }
655 res = parse_dsd_prop(s, st, orig_pos + data_size);
656 if (res < 0)
657 return res;
658 break;
659
660 case MKTAG('C','O','M','T'):
661 if (data_size < 2)
662 return AVERROR_INVALIDDATA;
663 nb_comments = avio_rb16(pb);
664 for (i = 0; i < nb_comments; i++) {
665 int year, mon, day, hour, min, type, ref;
666 char tmp[24];
667 const char *tag;
668 int metadata_size;
669
670 year = avio_rb16(pb);
671 mon = avio_r8(pb);
672 day = avio_r8(pb);
673 hour = avio_r8(pb);
674 min = avio_r8(pb);
675 snprintf(tmp, sizeof(tmp), "%04d-%02d-%02d %02d:%02d", year, mon, day, hour, min);
676 av_dict_set(&st->metadata, "comment_time", tmp, 0);
677
678 type = avio_rb16(pb);
679 ref = avio_rb16(pb);
680 switch (type) {
681 case 1:
682 if (!i)
683 tag = "channel_comment";
684 else {
685 snprintf(tmp, sizeof(tmp), "channel%d_comment", ref);
686 tag = tmp;
687 }
688 break;
689 case 2:
690 tag = ref < FF_ARRAY_ELEMS(dsd_source_comment) ? dsd_source_comment[ref] : "source_comment";
691 break;
692 case 3:
693 tag = ref < FF_ARRAY_ELEMS(dsd_history_comment) ? dsd_history_comment[ref] : "file_history";
694 break;
695 default:
696 tag = "comment";
697 }
698
699 metadata_size = avio_rb32(pb);
700 if ((res = get_metadata(s, tag, metadata_size)) < 0) {
701 av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", tag);
702 return res;
703 }
704
705 if (metadata_size & 1)
706 avio_skip(pb, 1);
707 }
708 break;
709 }
710
711 if (metadata_tag) {
712 if ((res = get_metadata(s, metadata_tag, data_size)) < 0) {
713 av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
714 return res;
715 }
716 }
717 avio_skip(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1));
718 }
719
720 if (st->codecpar->codec_tag == ID_ANIM)
721 avio_seek(pb, 12, SEEK_SET);
722 else
723 avio_seek(pb, iff->body_pos, SEEK_SET);
724
725 switch(st->codecpar->codec_type) {
726 case AVMEDIA_TYPE_AUDIO:
727 avpriv_set_pts_info(st, 32, 1, st->codecpar->sample_rate);
728
729 if (st->codecpar->codec_tag == ID_16SV)
730 st->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE_PLANAR;
731 else if (st->codecpar->codec_tag == ID_MAUD) {
732 if (iff->maud_bits == 8 && !iff->maud_compression) {
733 st->codecpar->codec_id = AV_CODEC_ID_PCM_U8;
734 } else if (iff->maud_bits == 16 && !iff->maud_compression) {
735 st->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE;
736 } else if (iff->maud_bits == 8 && iff->maud_compression == 2) {
737 st->codecpar->codec_id = AV_CODEC_ID_PCM_ALAW;
738 } else if (iff->maud_bits == 8 && iff->maud_compression == 3) {
739 st->codecpar->codec_id = AV_CODEC_ID_PCM_MULAW;
740 } else {
741 avpriv_request_sample(s, "compression %d and bit depth %d", iff->maud_compression, iff->maud_bits);
742 return AVERROR_PATCHWELCOME;
743 }
744 } else if (st->codecpar->codec_tag != ID_DSD &&
745 st->codecpar->codec_tag != ID_DST) {
746 switch (iff->svx8_compression) {
747 case COMP_NONE:
748 st->codecpar->codec_id = AV_CODEC_ID_PCM_S8_PLANAR;
749 break;
750 case COMP_FIB:
751 st->codecpar->codec_id = AV_CODEC_ID_8SVX_FIB;
752 break;
753 case COMP_EXP:
754 st->codecpar->codec_id = AV_CODEC_ID_8SVX_EXP;
755 break;
756 default:
757 av_log(s, AV_LOG_ERROR,
758 "Unknown SVX8 compression method '%d'\n", iff->svx8_compression);
759 return -1;
760 }
761 }
762
763 st->codecpar->bits_per_coded_sample = av_get_bits_per_sample(st->codecpar->codec_id);
764 st->codecpar->bit_rate = (int64_t)st->codecpar->channels * st->codecpar->sample_rate * st->codecpar->bits_per_coded_sample;
765 st->codecpar->block_align = st->codecpar->channels * st->codecpar->bits_per_coded_sample;
766 if ((st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) && st->codecpar->block_align <= 0)
767 return AVERROR_INVALIDDATA;
768 break;
769
770 case AVMEDIA_TYPE_VIDEO:
771 iff->bpp = st->codecpar->bits_per_coded_sample;
772 if (st->codecpar->codec_tag == ID_ANIM)
773 avpriv_set_pts_info(st, 32, 1, 60);
774 if ((screenmode & 0x800 /* Hold And Modify */) && iff->bpp <= 8) {
775 iff->ham = iff->bpp > 6 ? 6 : 4;
776 st->codecpar->bits_per_coded_sample = 24;
777 }
778 iff->flags = (screenmode & 0x80 /* Extra HalfBrite */) && iff->bpp <= 8;
779 iff->masking = masking;
780 iff->transparency = transparency;
781
782 if (!st->codecpar->extradata) {
783 int ret = ff_alloc_extradata(st->codecpar, IFF_EXTRA_VIDEO_SIZE);
784 if (ret < 0)
785 return ret;
786 }
787 av_assert0(st->codecpar->extradata_size >= IFF_EXTRA_VIDEO_SIZE);
788 buf = st->codecpar->extradata;
789 bytestream_put_be16(&buf, IFF_EXTRA_VIDEO_SIZE);
790 bytestream_put_byte(&buf, iff->bitmap_compression);
791 bytestream_put_byte(&buf, iff->bpp);
792 bytestream_put_byte(&buf, iff->ham);
793 bytestream_put_byte(&buf, iff->flags);
794 bytestream_put_be16(&buf, iff->transparency);
795 bytestream_put_byte(&buf, iff->masking);
796 bytestream_put_buffer(&buf, iff->tvdc, sizeof(iff->tvdc));
797 st->codecpar->codec_id = AV_CODEC_ID_IFF_ILBM;
798 break;
799 default:
800 return -1;
801 }
802
803 return 0;
804 }
805
get_anim_duration(uint8_t * buf,int size)806 static unsigned get_anim_duration(uint8_t *buf, int size)
807 {
808 GetByteContext gb;
809
810 bytestream2_init(&gb, buf, size);
811 bytestream2_skip(&gb, 4);
812 while (bytestream2_get_bytes_left(&gb) > 8) {
813 unsigned chunk = bytestream2_get_le32(&gb);
814 unsigned size = bytestream2_get_be32(&gb);
815
816 if (chunk == ID_ANHD) {
817 if (size < 40)
818 break;
819 bytestream2_skip(&gb, 14);
820 return bytestream2_get_be32(&gb);
821 } else {
822 bytestream2_skip(&gb, size + size & 1);
823 }
824 }
825 return 10;
826 }
827
iff_read_packet(AVFormatContext * s,AVPacket * pkt)828 static int iff_read_packet(AVFormatContext *s,
829 AVPacket *pkt)
830 {
831 IffDemuxContext *iff = s->priv_data;
832 AVIOContext *pb = s->pb;
833 AVStream *st = s->streams[0];
834 int ret;
835 int64_t pos = avio_tell(pb);
836
837 if (avio_feof(pb))
838 return AVERROR_EOF;
839 if (st->codecpar->codec_tag != ID_ANIM && pos >= iff->body_end)
840 return AVERROR_EOF;
841
842 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
843 if (st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) {
844 ret = av_get_packet(pb, pkt, FFMIN(iff->body_end - pos, 1024 * st->codecpar->block_align));
845 } else if (st->codecpar->codec_tag == ID_DST) {
846 return read_dst_frame(s, pkt);
847 } else {
848 if (iff->body_size > INT_MAX || !iff->body_size)
849 return AVERROR_INVALIDDATA;
850 ret = av_get_packet(pb, pkt, iff->body_size);
851 }
852 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
853 st->codecpar->codec_tag == ID_ANIM) {
854 uint64_t data_size, orig_pos;
855 uint32_t chunk_id, chunk_id2;
856
857 while (!avio_feof(pb)) {
858 if (avio_feof(pb))
859 return AVERROR_EOF;
860
861 orig_pos = avio_tell(pb);
862 chunk_id = avio_rl32(pb);
863 data_size = avio_rb32(pb);
864 chunk_id2 = avio_rl32(pb);
865
866 if (chunk_id == ID_FORM &&
867 chunk_id2 == ID_ILBM) {
868 avio_skip(pb, -4);
869 break;
870 } else if (chunk_id == ID_FORM &&
871 chunk_id2 == ID_ANIM) {
872 continue;
873 } else {
874 avio_skip(pb, data_size);
875 }
876 }
877 ret = av_get_packet(pb, pkt, data_size);
878 pkt->pos = orig_pos;
879 pkt->duration = get_anim_duration(pkt->data, pkt->size);
880 if (pos == 12)
881 pkt->flags |= AV_PKT_FLAG_KEY;
882 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
883 st->codecpar->codec_tag != ID_ANIM) {
884 if (iff->body_size > INT_MAX || !iff->body_size)
885 return AVERROR_INVALIDDATA;
886 ret = av_get_packet(pb, pkt, iff->body_size);
887 pkt->pos = pos;
888 if (pos == iff->body_pos)
889 pkt->flags |= AV_PKT_FLAG_KEY;
890 } else {
891 av_assert0(0);
892 }
893
894 if (ret < 0)
895 return ret;
896 pkt->stream_index = 0;
897 return ret;
898 }
899
900 AVInputFormat ff_iff_demuxer = {
901 .name = "iff",
902 .long_name = NULL_IF_CONFIG_SMALL("IFF (Interchange File Format)"),
903 .priv_data_size = sizeof(IffDemuxContext),
904 .read_probe = iff_probe,
905 .read_header = iff_read_header,
906 .read_packet = iff_read_packet,
907 .flags = AVFMT_GENERIC_INDEX | AVFMT_NO_BYTE_SEEK,
908 };
909