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tools/sofa2wavs: fix build on Windows
[ffmpeg.git] / libavformat / iff.c
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 "avio_internal.h"
41 #include "demux.h"
42 #include "id3v2.h"
43 #include "internal.h"
44
45 #define ID_8SVX MKTAG('8','S','V','X')
46 #define ID_16SV MKTAG('1','6','S','V')
47 #define ID_MAUD MKTAG('M','A','U','D')
48 #define ID_MHDR MKTAG('M','H','D','R')
49 #define ID_MDAT MKTAG('M','D','A','T')
50 #define ID_VHDR MKTAG('V','H','D','R')
51 #define ID_ATAK MKTAG('A','T','A','K')
52 #define ID_RLSE MKTAG('R','L','S','E')
53 #define ID_CHAN MKTAG('C','H','A','N')
54 #define ID_PBM MKTAG('P','B','M',' ')
55 #define ID_ILBM MKTAG('I','L','B','M')
56 #define ID_BMHD MKTAG('B','M','H','D')
57 #define ID_DGBL MKTAG('D','G','B','L')
58 #define ID_CAMG MKTAG('C','A','M','G')
59 #define ID_CMAP MKTAG('C','M','A','P')
60 #define ID_ACBM MKTAG('A','C','B','M')
61 #define ID_DEEP MKTAG('D','E','E','P')
62 #define ID_RGB8 MKTAG('R','G','B','8')
63 #define ID_RGBN MKTAG('R','G','B','N')
64 #define ID_DSD MKTAG('D','S','D',' ')
65 #define ID_DST MKTAG('D','S','T',' ')
66 #define ID_DSTC MKTAG('D','S','T','C')
67 #define ID_DSTF MKTAG('D','S','T','F')
68 #define ID_FRTE MKTAG('F','R','T','E')
69 #define ID_ANIM MKTAG('A','N','I','M')
70 #define ID_ANHD MKTAG('A','N','H','D')
71 #define ID_DLTA MKTAG('D','L','T','A')
72 #define ID_DPAN MKTAG('D','P','A','N')
73
74 #define ID_FORM MKTAG('F','O','R','M')
75 #define ID_FRM8 MKTAG('F','R','M','8')
76 #define ID_ANNO MKTAG('A','N','N','O')
77 #define ID_AUTH MKTAG('A','U','T','H')
78 #define ID_CHRS MKTAG('C','H','R','S')
79 #define ID_COPYRIGHT MKTAG('(','c',')',' ')
80 #define ID_CSET MKTAG('C','S','E','T')
81 #define ID_FVER MKTAG('F','V','E','R')
82 #define ID_NAME MKTAG('N','A','M','E')
83 #define ID_TEXT MKTAG('T','E','X','T')
84 #define ID_ABIT MKTAG('A','B','I','T')
85 #define ID_BODY MKTAG('B','O','D','Y')
86 #define ID_DBOD MKTAG('D','B','O','D')
87 #define ID_DPEL MKTAG('D','P','E','L')
88 #define ID_DLOC MKTAG('D','L','O','C')
89 #define ID_TVDC MKTAG('T','V','D','C')
90
91 #define LEFT 2
92 #define RIGHT 4
93 #define STEREO 6
94
95 /**
96 * This number of bytes if added at the beginning of each AVPacket
97 * which contain additional information about video properties
98 * which has to be shared between demuxer and decoder.
99 * This number may change between frames, e.g. the demuxer might
100 * set it to smallest possible size of 2 to indicate that there's
101 * no extradata changing in this frame.
102 */
103 #define IFF_EXTRA_VIDEO_SIZE 41
104
105 typedef enum {
106 COMP_NONE,
107 COMP_FIB,
108 COMP_EXP
109 } svx8_compression_type;
110
111 typedef struct IffDemuxContext {
112 int is_64bit; ///< chunk size is 64-bit
113 int64_t body_pos;
114 int64_t body_end;
115 int64_t sbdy_pos;
116 int64_t resume_pos;
117 uint32_t body_size;
118 svx8_compression_type svx8_compression;
119 unsigned maud_bits;
120 unsigned maud_compression;
121 unsigned bitmap_compression; ///< delta compression method used
122 unsigned bpp; ///< bits per plane to decode (differs from bits_per_coded_sample if HAM)
123 unsigned ham; ///< 0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise)
124 unsigned flags; ///< 1 for EHB, 0 is no extra half darkening
125 unsigned transparency; ///< transparency color index in palette
126 unsigned masking; ///< masking method used
127 uint8_t tvdc[32]; ///< TVDC lookup table
128 uint32_t form_tag;
129 int audio_stream_index;
130 int video_stream_index;
131 } IffDemuxContext;
132
133 /* Metadata string read */
134 static int get_metadata(AVFormatContext *s,
135 const char *const tag,
136 const unsigned data_size)
137 {
138 uint8_t *buf = ((data_size + 1) == 0) ? NULL : av_malloc(data_size + 1);
139 int res;
140
141 if (!buf)
142 return AVERROR(ENOMEM);
143
144 if ((res = ffio_read_size(s->pb, buf, data_size)) < 0) {
145 av_free(buf);
146 return res;
147 }
148 buf[data_size] = 0;
149 av_dict_set(&s->metadata, tag, buf, AV_DICT_DONT_STRDUP_VAL);
150 return 0;
151 }
152
153 static int iff_probe(const AVProbeData *p)
154 {
155 const uint8_t *d = p->buf;
156
157 if ( (AV_RL32(d) == ID_FORM &&
158 (AV_RL32(d+8) == ID_8SVX ||
159 AV_RL32(d+8) == ID_16SV ||
160 AV_RL32(d+8) == ID_MAUD ||
161 AV_RL32(d+8) == ID_PBM ||
162 AV_RL32(d+8) == ID_ACBM ||
163 AV_RL32(d+8) == ID_DEEP ||
164 AV_RL32(d+8) == ID_ILBM ||
165 AV_RL32(d+8) == ID_RGB8 ||
166 AV_RL32(d+8) == ID_ANIM ||
167 AV_RL32(d+8) == ID_RGBN)) ||
168 (AV_RL32(d) == ID_FRM8 && AV_RL32(d+12) == ID_DSD))
169 return AVPROBE_SCORE_MAX;
170 return 0;
171 }
172
173 static const AVCodecTag dsd_codec_tags[] = {
174 { AV_CODEC_ID_DSD_MSBF, ID_DSD },
175 { AV_CODEC_ID_DST, ID_DST },
176 { AV_CODEC_ID_NONE, 0 },
177 };
178
179
180 #define DSD_SLFT MKTAG('S','L','F','T')
181 #define DSD_SRGT MKTAG('S','R','G','T')
182 #define DSD_MLFT MKTAG('M','L','F','T')
183 #define DSD_MRGT MKTAG('M','R','G','T')
184 #define DSD_C MKTAG('C',' ',' ',' ')
185 #define DSD_LS MKTAG('L','S',' ',' ')
186 #define DSD_RS MKTAG('R','S',' ',' ')
187 #define DSD_LFE MKTAG('L','F','E',' ')
188
189 static const uint32_t dsd_stereo[] = { DSD_SLFT, DSD_SRGT };
190 static const uint32_t dsd_5point0[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LS, DSD_RS };
191 static const uint32_t dsd_5point1[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LFE, DSD_LS, DSD_RS };
192
193 typedef struct {
194 AVChannelLayout layout;
195 const uint32_t * dsd_layout;
196 } DSDLayoutDesc;
197
198 static const DSDLayoutDesc dsd_channel_layout[] = {
199 { AV_CHANNEL_LAYOUT_STEREO, dsd_stereo },
200 { AV_CHANNEL_LAYOUT_5POINT0, dsd_5point0 },
201 { AV_CHANNEL_LAYOUT_5POINT1, dsd_5point1 },
202 };
203
204 static const AVChannelLayout dsd_loudspeaker_config[] = {
205 AV_CHANNEL_LAYOUT_STEREO,
206 { 0 }, { 0 },
207 AV_CHANNEL_LAYOUT_5POINT0, AV_CHANNEL_LAYOUT_5POINT1,
208 };
209
210 static const char * dsd_source_comment[] = {
211 "dsd_source_comment",
212 "analogue_source_comment",
213 "pcm_source_comment",
214 };
215
216 static const char * dsd_history_comment[] = {
217 "general_remark",
218 "operator_name",
219 "creating_machine",
220 "timezone",
221 "file_revision"
222 };
223
224 static int parse_dsd_diin(AVFormatContext *s, AVStream *st, uint64_t eof)
225 {
226 AVIOContext *pb = s->pb;
227
228 while (av_sat_add64(avio_tell(pb), 12) <= eof && !avio_feof(pb)) {
229 uint32_t tag = avio_rl32(pb);
230 uint64_t size = avio_rb64(pb);
231 uint64_t orig_pos = avio_tell(pb);
232 const char * metadata_tag = NULL;
233
234 if (size >= INT64_MAX)
235 return AVERROR_INVALIDDATA;
236
237 switch(tag) {
238 case MKTAG('D','I','A','R'): metadata_tag = "artist"; break;
239 case MKTAG('D','I','T','I'): metadata_tag = "title"; break;
240 }
241
242 if (metadata_tag && size > 4) {
243 unsigned int tag_size = avio_rb32(pb);
244 int ret = get_metadata(s, metadata_tag, FFMIN(tag_size, size - 4));
245 if (ret < 0) {
246 av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
247 return ret;
248 }
249 }
250
251 avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
252 }
253
254 return 0;
255 }
256
257 static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
258 {
259 AVIOContext *pb = s->pb;
260 char abss[24];
261 int hour, min, sec, i, ret, config;
262 int dsd_layout[6];
263 ID3v2ExtraMeta *id3v2_extra_meta;
264
265 while (av_sat_add64(avio_tell(pb), 12) <= eof && !avio_feof(pb)) {
266 uint32_t tag = avio_rl32(pb);
267 uint64_t size = avio_rb64(pb);
268 uint64_t orig_pos = avio_tell(pb);
269
270 if (size >= INT64_MAX)
271 return AVERROR_INVALIDDATA;
272
273 switch(tag) {
274 case MKTAG('A','B','S','S'):
275 if (size < 8)
276 return AVERROR_INVALIDDATA;
277 hour = avio_rb16(pb);
278 min = avio_r8(pb);
279 sec = avio_r8(pb);
280 snprintf(abss, sizeof(abss), "%02dh:%02dm:%02ds:%d", hour, min, sec, avio_rb32(pb));
281 av_dict_set(&st->metadata, "absolute_start_time", abss, 0);
282 break;
283
284 case MKTAG('C','H','N','L'):
285 if (size < 2)
286 return AVERROR_INVALIDDATA;
287 st->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
288 st->codecpar->ch_layout.nb_channels = avio_rb16(pb);
289 if (size < 2 + st->codecpar->ch_layout.nb_channels * 4 || !st->codecpar->ch_layout.nb_channels)
290 return AVERROR_INVALIDDATA;
291 if (st->codecpar->ch_layout.nb_channels > FF_ARRAY_ELEMS(dsd_layout)) {
292 avpriv_request_sample(s, "channel layout");
293 break;
294 }
295 for (i = 0; i < st->codecpar->ch_layout.nb_channels; i++)
296 dsd_layout[i] = avio_rl32(pb);
297 for (i = 0; i < FF_ARRAY_ELEMS(dsd_channel_layout); i++) {
298 const DSDLayoutDesc * d = &dsd_channel_layout[i];
299 if (d->layout.nb_channels == st->codecpar->ch_layout.nb_channels &&
300 !memcmp(d->dsd_layout, dsd_layout, d->layout.nb_channels * sizeof(uint32_t))) {
301 st->codecpar->ch_layout = d->layout;
302 break;
303 }
304 }
305 break;
306
307 case MKTAG('C','M','P','R'):
308 if (size < 4)
309 return AVERROR_INVALIDDATA;
310 st->codecpar->codec_tag = tag = avio_rl32(pb);
311 st->codecpar->codec_id = ff_codec_get_id(dsd_codec_tags, tag);
312 if (!st->codecpar->codec_id) {
313 av_log(s, AV_LOG_ERROR, "'%s' compression is not supported\n",
314 av_fourcc2str(tag));
315 return AVERROR_PATCHWELCOME;
316 }
317 break;
318
319 case MKTAG('F','S',' ',' '):
320 if (size < 4)
321 return AVERROR_INVALIDDATA;
322 st->codecpar->sample_rate = avio_rb32(pb) / 8;
323 break;
324
325 case MKTAG('I','D','3',' '):
326 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, size);
327 if (id3v2_extra_meta) {
328 if ((ret = ff_id3v2_parse_apic(s, id3v2_extra_meta)) < 0 ||
329 (ret = ff_id3v2_parse_chapters(s, id3v2_extra_meta)) < 0) {
330 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
331 return ret;
332 }
333 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
334 }
335
336 if (size < avio_tell(pb) - orig_pos) {
337 av_log(s, AV_LOG_ERROR, "id3 exceeds chunk size\n");
338 return AVERROR_INVALIDDATA;
339 }
340 break;
341
342 case MKTAG('L','S','C','O'):
343 if (size < 2)
344 return AVERROR_INVALIDDATA;
345 config = avio_rb16(pb);
346 if (config != 0xFFFF) {
347 if (config < FF_ARRAY_ELEMS(dsd_loudspeaker_config))
348 st->codecpar->ch_layout = dsd_loudspeaker_config[config];
349 if (!st->codecpar->ch_layout.nb_channels)
350 avpriv_request_sample(s, "loudspeaker configuration %d", config);
351 }
352 break;
353 }
354
355 avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
356 }
357
358 return 0;
359 }
360
361 static int read_dst_frame(AVFormatContext *s, AVPacket *pkt)
362 {
363 IffDemuxContext *iff = s->priv_data;
364 AVIOContext *pb = s->pb;
365 uint32_t chunk_id;
366 uint64_t chunk_pos, data_pos, data_size;
367 int ret = AVERROR_EOF;
368
369 if (s->nb_streams < 1)
370 return AVERROR_INVALIDDATA;
371
372 while (!avio_feof(pb)) {
373 chunk_pos = avio_tell(pb);
374 if (chunk_pos >= iff->body_end)
375 return AVERROR_EOF;
376
377 chunk_id = avio_rl32(pb);
378 data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
379 data_pos = avio_tell(pb);
380
381 if (data_size < 1 || data_size >= INT64_MAX)
382 return AVERROR_INVALIDDATA;
383
384 switch (chunk_id) {
385 case ID_DSTF:
386 if (!pkt) {
387 iff->body_pos = avio_tell(pb) - (iff->is_64bit ? 12 : 8);
388 iff->body_size = iff->body_end - iff->body_pos;
389 return 0;
390 }
391 ret = av_get_packet(pb, pkt, data_size);
392 if (ret < 0)
393 return ret;
394 if (data_size & 1)
395 avio_skip(pb, 1);
396 pkt->flags |= AV_PKT_FLAG_KEY;
397 pkt->stream_index = iff->audio_stream_index;
398 pkt->duration = s->streams[0]->codecpar->sample_rate / 75;
399 pkt->pos = chunk_pos;
400
401 chunk_pos = avio_tell(pb);
402 if (chunk_pos >= iff->body_end)
403 return 0;
404
405 avio_seek(pb, chunk_pos, SEEK_SET);
406 return 0;
407
408 case ID_FRTE:
409 if (data_size < 4)
410 return AVERROR_INVALIDDATA;
411 s->streams[0]->duration = avio_rb32(pb) * (uint64_t)s->streams[0]->codecpar->sample_rate / 75;
412
413 break;
414 }
415
416 avio_skip(pb, data_size - (avio_tell(pb) - data_pos) + (data_size & 1));
417 }
418
419 return ret;
420 }
421
422 static const uint8_t deep_rgb24[] = {0, 0, 0, 3, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
423 static const uint8_t deep_rgba[] = {0, 0, 0, 4, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
424 static const uint8_t deep_bgra[] = {0, 0, 0, 4, 0, 3, 0, 8, 0, 2, 0, 8, 0, 1, 0, 8};
425 static const uint8_t deep_argb[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 1, 0, 8, 0, 2, 0, 8};
426 static const uint8_t deep_abgr[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 3, 0, 8, 0, 2, 0, 8};
427
428 static AVStream * new_stream(AVFormatContext *s, AVStream **st_ptr, int *index_ptr, enum AVMediaType codec_type)
429 {
430 if (!*st_ptr) {
431 *st_ptr = avformat_new_stream(s, NULL);
432 if (!*st_ptr)
433 return NULL;
434 (*st_ptr)->codecpar->codec_type = codec_type;
435 (*index_ptr) = (*st_ptr)->index;
436 }
437 return *st_ptr;
438 }
439
440 static int iff_read_header(AVFormatContext *s)
441 {
442 IffDemuxContext *iff = s->priv_data;
443 AVIOContext *pb = s->pb;
444 AVStream *sta = NULL, *stv = NULL;
445 uint8_t *buf;
446 uint32_t chunk_id;
447 uint64_t data_size;
448 uint32_t screenmode = 0, num, den;
449 unsigned transparency = 0;
450 unsigned masking = 0; // no mask
451 uint8_t fmt[16];
452 int fmt_size;
453
454 iff->audio_stream_index = -1;
455 iff->video_stream_index = -1;
456 iff->is_64bit = avio_rl32(pb) == ID_FRM8;
457 avio_skip(pb, iff->is_64bit ? 8 : 4);
458 iff->form_tag = avio_rl32(pb);
459 if (iff->form_tag == ID_ANIM) {
460 avio_skip(pb, 12);
461 }
462 iff->bitmap_compression = -1;
463 iff->svx8_compression = -1;
464 iff->maud_bits = -1;
465 iff->maud_compression = -1;
466
467 while(!avio_feof(pb)) {
468 uint64_t orig_pos;
469 int res;
470 const char *metadata_tag = NULL;
471 int version, nb_comments, i;
472 chunk_id = avio_rl32(pb);
473 data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
474 orig_pos = avio_tell(pb);
475
476 if (data_size >= INT64_MAX)
477 return AVERROR_INVALIDDATA;
478
479 switch(chunk_id) {
480 case ID_VHDR:
481 if (data_size < 14)
482 return AVERROR_INVALIDDATA;
483 if (!new_stream(s, &sta, &iff->audio_stream_index, AVMEDIA_TYPE_AUDIO))
484 return AVERROR(ENOMEM);
485 avio_skip(pb, 12);
486 sta->codecpar->sample_rate = avio_rb16(pb);
487 if (data_size >= 16) {
488 avio_skip(pb, 1);
489 iff->svx8_compression = avio_r8(pb);
490 }
491 sta->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
492 break;
493
494 case ID_MHDR:
495 if (data_size < 32)
496 return AVERROR_INVALIDDATA;
497 if (!new_stream(s, &sta, &iff->audio_stream_index, AVMEDIA_TYPE_AUDIO))
498 return AVERROR(ENOMEM);
499 avio_skip(pb, 4);
500 iff->maud_bits = avio_rb16(pb);
501 avio_skip(pb, 2);
502 num = avio_rb32(pb);
503 den = avio_rb16(pb);
504 if (!den)
505 return AVERROR_INVALIDDATA;
506 avio_skip(pb, 2);
507 sta->codecpar->sample_rate = num / den;
508 sta->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
509 sta->codecpar->ch_layout.nb_channels = avio_rb16(pb);
510 iff->maud_compression = avio_rb16(pb);
511 if (sta->codecpar->ch_layout.nb_channels == 1)
512 sta->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
513 else if (sta->codecpar->ch_layout.nb_channels == 2)
514 sta->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
515 else if (sta->codecpar->ch_layout.nb_channels == 0)
516 return AVERROR_INVALIDDATA;
517 break;
518
519 case ID_ABIT:
520 case ID_BODY:
521 case ID_DBOD:
522 case ID_DSD:
523 case ID_DST:
524 case ID_MDAT:
525 iff->body_pos = avio_tell(pb);
526 if (iff->body_pos < 0 || iff->body_pos + data_size > INT64_MAX)
527 return AVERROR_INVALIDDATA;
528
529 iff->body_end = iff->body_pos + data_size;
530 iff->body_size = data_size;
531 if (chunk_id == ID_DST) {
532 int ret = read_dst_frame(s, NULL);
533 if (ret < 0)
534 return ret;
535 }
536 break;
537
538 case ID_CHAN:
539 if (data_size < 4)
540 return AVERROR_INVALIDDATA;
541 if (!sta)
542 return AVERROR_INVALIDDATA;
543 if (avio_rb32(pb) < 6) {
544 sta->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
545 } else {
546 sta->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
547 }
548 break;
549
550 case ID_CAMG:
551 if (data_size < 4)
552 return AVERROR_INVALIDDATA;
553 screenmode = avio_rb32(pb);
554 break;
555
556 case ID_CMAP:
557 if (data_size < 3 || data_size > 768 || data_size % 3) {
558 av_log(s, AV_LOG_ERROR, "Invalid CMAP chunk size %"PRIu64"\n",
559 data_size);
560 return AVERROR_INVALIDDATA;
561 }
562 if (!stv)
563 return AVERROR_INVALIDDATA;
564 res = ff_alloc_extradata(stv->codecpar,
565 data_size + IFF_EXTRA_VIDEO_SIZE);
566 if (res < 0)
567 return res;
568 if ((res = avio_read(pb, stv->codecpar->extradata + IFF_EXTRA_VIDEO_SIZE, data_size)) < 0) {
569 av_freep(&stv->codecpar->extradata);
570 stv->codecpar->extradata_size = 0;
571 return res;
572 }
573 break;
574
575 case ID_BMHD:
576 if (data_size <= 8)
577 return AVERROR_INVALIDDATA;
578 if (!new_stream(s, &stv, &iff->video_stream_index, AVMEDIA_TYPE_VIDEO))
579 return AVERROR(ENOMEM);
580 stv->codecpar->width = avio_rb16(pb);
581 stv->codecpar->height = avio_rb16(pb);
582 avio_skip(pb, 4); // x, y offset
583 stv->codecpar->bits_per_coded_sample = avio_r8(pb);
584 if (data_size >= 10)
585 masking = avio_r8(pb);
586 if (data_size >= 11)
587 iff->bitmap_compression = avio_r8(pb);
588 if (data_size >= 14) {
589 avio_skip(pb, 1); // padding
590 transparency = avio_rb16(pb);
591 }
592 if (data_size >= 16) {
593 stv->sample_aspect_ratio.num = avio_r8(pb);
594 stv->sample_aspect_ratio.den = avio_r8(pb);
595 }
596 break;
597
598 case ID_ANHD:
599 break;
600
601 case ID_DPAN:
602 if (!stv)
603 return AVERROR_INVALIDDATA;
604 avio_skip(pb, 2);
605 stv->duration = avio_rb16(pb);
606 break;
607
608 case ID_DPEL:
609 if (data_size < 4 || (data_size & 3))
610 return AVERROR_INVALIDDATA;
611 if (!stv)
612 return AVERROR_INVALIDDATA;
613 if ((fmt_size = avio_read(pb, fmt, sizeof(fmt))) < 0)
614 return fmt_size;
615 if (fmt_size == sizeof(deep_rgb24) && !memcmp(fmt, deep_rgb24, sizeof(deep_rgb24)))
616 stv->codecpar->format = AV_PIX_FMT_RGB24;
617 else if (fmt_size == sizeof(deep_rgba) && !memcmp(fmt, deep_rgba, sizeof(deep_rgba)))
618 stv->codecpar->format = AV_PIX_FMT_RGBA;
619 else if (fmt_size == sizeof(deep_bgra) && !memcmp(fmt, deep_bgra, sizeof(deep_bgra)))
620 stv->codecpar->format = AV_PIX_FMT_BGRA;
621 else if (fmt_size == sizeof(deep_argb) && !memcmp(fmt, deep_argb, sizeof(deep_argb)))
622 stv->codecpar->format = AV_PIX_FMT_ARGB;
623 else if (fmt_size == sizeof(deep_abgr) && !memcmp(fmt, deep_abgr, sizeof(deep_abgr)))
624 stv->codecpar->format = AV_PIX_FMT_ABGR;
625 else {
626 avpriv_request_sample(s, "color format %.16s", fmt);
627 return AVERROR_PATCHWELCOME;
628 }
629 break;
630
631 case ID_DGBL:
632 if (data_size < 8)
633 return AVERROR_INVALIDDATA;
634 if (!new_stream(s, &stv, &iff->video_stream_index, AVMEDIA_TYPE_VIDEO))
635 return AVERROR(ENOMEM);
636 stv->codecpar->width = avio_rb16(pb);
637 stv->codecpar->height = avio_rb16(pb);
638 iff->bitmap_compression = avio_rb16(pb);
639 stv->sample_aspect_ratio.num = avio_r8(pb);
640 stv->sample_aspect_ratio.den = avio_r8(pb);
641 stv->codecpar->bits_per_coded_sample = 24;
642 break;
643
644 case ID_DLOC:
645 if (data_size < 4)
646 return AVERROR_INVALIDDATA;
647 if (!new_stream(s, &stv, &iff->video_stream_index, AVMEDIA_TYPE_VIDEO))
648 return AVERROR(ENOMEM);
649 stv->codecpar->width = avio_rb16(pb);
650 stv->codecpar->height = avio_rb16(pb);
651 break;
652
653 case ID_TVDC:
654 if (data_size < sizeof(iff->tvdc))
655 return AVERROR_INVALIDDATA;
656 res = avio_read(pb, iff->tvdc, sizeof(iff->tvdc));
657 if (res < 0)
658 return res;
659 break;
660
661 case MKTAG('S','X','H','D'):
662 if (data_size < 22)
663 return AVERROR_INVALIDDATA;
664 if (!new_stream(s, &sta, &iff->audio_stream_index, AVMEDIA_TYPE_AUDIO))
665 return AVERROR(ENOMEM);
666 sta->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
667 switch(avio_r8(pb)) {
668 case 8:
669 sta->codecpar->codec_id = AV_CODEC_ID_PCM_S8_PLANAR;
670 break;
671 default:
672 avpriv_request_sample(s, "sound bitdepth");
673 return AVERROR_INVALIDDATA;
674 }
675 avio_skip(pb, 9);
676 if (avio_rb32(pb)) {
677 avpriv_request_sample(s, "sound compression");
678 return AVERROR_INVALIDDATA;
679 }
680 avio_skip(pb, 1);
681 sta->codecpar->ch_layout.nb_channels = avio_r8(pb);
682 if (!sta->codecpar->ch_layout.nb_channels)
683 return AVERROR_INVALIDDATA;
684 if (sta->codecpar->ch_layout.nb_channels == 1)
685 sta->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
686 else if (sta->codecpar->ch_layout.nb_channels == 2)
687 sta->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
688 sta->codecpar->sample_rate = avio_rb32(pb);
689 avpriv_set_pts_info(sta, 64, 1, sta->codecpar->sample_rate);
690 avio_skip(pb, 2);
691 break;
692
693 case ID_ANNO:
694 case ID_TEXT: metadata_tag = "comment"; break;
695 case ID_AUTH: metadata_tag = "artist"; break;
696 case ID_COPYRIGHT: metadata_tag = "copyright"; break;
697 case ID_NAME: metadata_tag = "title"; break;
698
699 /* DSD tags */
700
701 case MKTAG('F','V','E','R'):
702 if (iff->form_tag == ID_DSD || iff->form_tag == ID_DST) {
703 if (data_size < 4)
704 return AVERROR_INVALIDDATA;
705 version = avio_rb32(pb);
706 av_log(s, AV_LOG_DEBUG, "DSIFF v%d.%d.%d.%d\n",version >> 24, (version >> 16) & 0xFF, (version >> 8) & 0xFF, version & 0xFF);
707 if (!new_stream(s, &sta, &iff->audio_stream_index, AVMEDIA_TYPE_AUDIO))
708 return AVERROR(ENOMEM);
709 sta->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
710 }
711 break;
712
713 case MKTAG('D','I','I','N'):
714 if (!sta)
715 return AVERROR_INVALIDDATA;
716 res = parse_dsd_diin(s, sta, orig_pos + data_size);
717 if (res < 0)
718 return res;
719 break;
720
721 case MKTAG('P','R','O','P'):
722 if (data_size < 4)
723 return AVERROR_INVALIDDATA;
724 if (avio_rl32(pb) != MKTAG('S','N','D',' ')) {
725 avpriv_request_sample(s, "unknown property type");
726 break;
727 }
728 if (!sta)
729 return AVERROR_INVALIDDATA;
730 res = parse_dsd_prop(s, sta, orig_pos + data_size);
731 if (res < 0)
732 return res;
733 break;
734
735 case MKTAG('C','O','M','T'):
736 if (data_size < 2)
737 return AVERROR_INVALIDDATA;
738 if (!sta)
739 return AVERROR_INVALIDDATA;
740 nb_comments = avio_rb16(pb);
741 for (i = 0; i < nb_comments; i++) {
742 int year, mon, day, hour, min, type, ref;
743 char tmp[24];
744 const char *tag;
745 int metadata_size;
746
747 year = avio_rb16(pb);
748 mon = avio_r8(pb);
749 day = avio_r8(pb);
750 hour = avio_r8(pb);
751 min = avio_r8(pb);
752 snprintf(tmp, sizeof(tmp), "%04d-%02d-%02d %02d:%02d", year, mon, day, hour, min);
753 av_dict_set(&sta->metadata, "comment_time", tmp, 0);
754
755 type = avio_rb16(pb);
756 ref = avio_rb16(pb);
757 switch (type) {
758 case 1:
759 if (!i)
760 tag = "channel_comment";
761 else {
762 snprintf(tmp, sizeof(tmp), "channel%d_comment", ref);
763 tag = tmp;
764 }
765 break;
766 case 2:
767 tag = ref < FF_ARRAY_ELEMS(dsd_source_comment) ? dsd_source_comment[ref] : "source_comment";
768 break;
769 case 3:
770 tag = ref < FF_ARRAY_ELEMS(dsd_history_comment) ? dsd_history_comment[ref] : "file_history";
771 break;
772 default:
773 tag = "comment";
774 }
775
776 metadata_size = avio_rb32(pb);
777 if ((res = get_metadata(s, tag, metadata_size)) < 0) {
778 av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", tag);
779 return res;
780 }
781
782 if (metadata_size & 1)
783 avio_skip(pb, 1);
784 }
785 break;
786 }
787
788 if (metadata_tag) {
789 if ((res = get_metadata(s, metadata_tag, data_size)) < 0) {
790 av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
791 return res;
792 }
793 }
794 avio_skip(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1));
795 }
796
797 if ((!sta && !stv) ||
798 (iff->form_tag == ID_ANIM && !stv) ||
799 (iff->form_tag != ID_ANIM && sta && stv))
800 return AVERROR_INVALIDDATA;
801
802 if (iff->form_tag == ID_ANIM)
803 avio_seek(pb, 12, SEEK_SET);
804 else
805 avio_seek(pb, iff->body_pos, SEEK_SET);
806
807 if (sta) {
808 avpriv_set_pts_info(sta, 32, 1, sta->codecpar->sample_rate);
809
810 if (sta->codecpar->codec_id != AV_CODEC_ID_NONE) {
811 /* codec_id already set by PROP or SXHD chunk */
812 } else if (iff->form_tag == ID_16SV)
813 sta->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE_PLANAR;
814 else if (iff->form_tag == ID_MAUD) {
815 if (iff->maud_bits == 8 && !iff->maud_compression) {
816 sta->codecpar->codec_id = AV_CODEC_ID_PCM_U8;
817 } else if (iff->maud_bits == 16 && !iff->maud_compression) {
818 sta->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE;
819 } else if (iff->maud_bits == 8 && iff->maud_compression == 2) {
820 sta->codecpar->codec_id = AV_CODEC_ID_PCM_ALAW;
821 } else if (iff->maud_bits == 8 && iff->maud_compression == 3) {
822 sta->codecpar->codec_id = AV_CODEC_ID_PCM_MULAW;
823 } else {
824 avpriv_request_sample(s, "compression %d and bit depth %d", iff->maud_compression, iff->maud_bits);
825 return AVERROR_PATCHWELCOME;
826 }
827 } else {
828 switch (iff->svx8_compression) {
829 case COMP_NONE:
830 sta->codecpar->codec_id = AV_CODEC_ID_PCM_S8_PLANAR;
831 break;
832 case COMP_FIB:
833 sta->codecpar->codec_id = AV_CODEC_ID_8SVX_FIB;
834 break;
835 case COMP_EXP:
836 sta->codecpar->codec_id = AV_CODEC_ID_8SVX_EXP;
837 break;
838 default:
839 av_log(s, AV_LOG_ERROR,
840 "Unknown SVX8 compression method '%d'\n", iff->svx8_compression);
841 return -1;
842 }
843 }
844
845 sta->codecpar->bits_per_coded_sample = av_get_bits_per_sample(sta->codecpar->codec_id);
846 sta->codecpar->bit_rate = (int64_t)sta->codecpar->ch_layout.nb_channels *
847 sta->codecpar->sample_rate *
848 sta->codecpar->bits_per_coded_sample;
849 sta->codecpar->block_align = sta->codecpar->ch_layout.nb_channels *
850 sta->codecpar->bits_per_coded_sample;
851 if ((sta->codecpar->codec_tag == ID_DSD || iff->form_tag == ID_MAUD) && sta->codecpar->block_align <= 0)
852 return AVERROR_INVALIDDATA;
853 }
854
855 if (stv) {
856 iff->bpp = stv->codecpar->bits_per_coded_sample;
857 if (iff->form_tag == ID_ANIM)
858 avpriv_set_pts_info(stv, 32, 1, 60);
859 if ((screenmode & 0x800 /* Hold And Modify */) && iff->bpp <= 8) {
860 iff->ham = iff->bpp > 6 ? 6 : 4;
861 stv->codecpar->bits_per_coded_sample = 24;
862 }
863 iff->flags = (screenmode & 0x80 /* Extra HalfBrite */) && iff->bpp <= 8;
864 iff->masking = masking;
865 iff->transparency = transparency;
866
867 if (!stv->codecpar->extradata) {
868 int ret = ff_alloc_extradata(stv->codecpar, IFF_EXTRA_VIDEO_SIZE);
869 if (ret < 0)
870 return ret;
871 }
872 av_assert0(stv->codecpar->extradata_size >= IFF_EXTRA_VIDEO_SIZE);
873 buf = stv->codecpar->extradata;
874 bytestream_put_be16(&buf, IFF_EXTRA_VIDEO_SIZE);
875 bytestream_put_byte(&buf, iff->bitmap_compression);
876 bytestream_put_byte(&buf, iff->bpp);
877 bytestream_put_byte(&buf, iff->ham);
878 bytestream_put_byte(&buf, iff->flags);
879 bytestream_put_be16(&buf, iff->transparency);
880 bytestream_put_byte(&buf, iff->masking);
881 bytestream_put_buffer(&buf, iff->tvdc, sizeof(iff->tvdc));
882 stv->codecpar->codec_id = AV_CODEC_ID_IFF_ILBM;
883 stv->codecpar->codec_tag = iff->form_tag; // codec_tag used by ByteRun1 decoder to distinguish progressive (PBM) and interlaced (ILBM) content
884 }
885
886 return 0;
887 }
888
889 static unsigned get_anim_duration(uint8_t *buf, int size)
890 {
891 GetByteContext gb;
892
893 bytestream2_init(&gb, buf, size);
894 bytestream2_skip(&gb, 4);
895 while (bytestream2_get_bytes_left(&gb) > 8) {
896 unsigned chunk = bytestream2_get_le32(&gb);
897 unsigned size = bytestream2_get_be32(&gb);
898
899 if (chunk == ID_ANHD) {
900 if (size < 40)
901 break;
902 bytestream2_skip(&gb, 14);
903 return bytestream2_get_be32(&gb);
904 } else {
905 bytestream2_skip(&gb, size + size & 1);
906 }
907 }
908 return 10;
909 }
910
911 static int64_t get_sbdy_offset(uint8_t *buf, int size)
912 {
913 GetByteContext gb;
914
915 bytestream2_init(&gb, buf, size);
916 bytestream2_skip(&gb, 4);
917 while (bytestream2_get_bytes_left(&gb) > 8) {
918 unsigned chunk = bytestream2_get_le32(&gb);
919 unsigned size = bytestream2_get_be32(&gb);
920
921 if (chunk == MKTAG('S','B','D','Y'))
922 return bytestream2_tell(&gb);
923
924 bytestream2_skip(&gb, size + size & 1);
925 }
926
927 return 0;
928 }
929
930 static int iff_read_packet(AVFormatContext *s,
931 AVPacket *pkt)
932 {
933 IffDemuxContext *iff = s->priv_data;
934 AVIOContext *pb = s->pb;
935 int ret;
936 int64_t pos = avio_tell(pb);
937
938 if (avio_feof(pb))
939 return AVERROR_EOF;
940 if (iff->form_tag != ID_ANIM && pos >= iff->body_end)
941 return AVERROR_EOF;
942
943 if (iff->sbdy_pos) {
944 int64_t data_size;
945 avio_seek(pb, iff->sbdy_pos, SEEK_SET);
946 data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
947 ret = av_get_packet(pb, pkt, data_size);
948 pkt->stream_index = iff->audio_stream_index;
949 pkt->duration = data_size / s->streams[iff->audio_stream_index]->codecpar->ch_layout.nb_channels;
950 pkt->pos = INT_MAX; /* not seekable */
951
952 iff->sbdy_pos = 0;
953 avio_seek(pb, iff->resume_pos, SEEK_SET);
954 return ret;
955 }
956
957 if (iff->audio_stream_index >= 0 && iff->video_stream_index < 0) { /* audio only */
958 AVStream *sta = s->streams[iff->audio_stream_index];
959 if (sta->codecpar->codec_tag == ID_DSD || iff->form_tag == ID_MAUD) {
960 ret = av_get_packet(pb, pkt, FFMIN(iff->body_end - pos, 1024 * sta->codecpar->block_align));
961 } else if (sta->codecpar->codec_tag == ID_DST) {
962 return read_dst_frame(s, pkt);
963 } else {
964 if (iff->body_size > INT_MAX || !iff->body_size)
965 return AVERROR_INVALIDDATA;
966 ret = av_get_packet(pb, pkt, iff->body_size);
967 }
968 pkt->stream_index = iff->audio_stream_index;
969 } else if (iff->form_tag == ID_ANIM) {
970 uint64_t data_size, orig_pos;
971 uint32_t chunk_id, chunk_id2;
972
973 while (!avio_feof(pb)) {
974 orig_pos = avio_tell(pb);
975 chunk_id = avio_rl32(pb);
976 data_size = avio_rb32(pb);
977 chunk_id2 = avio_rl32(pb);
978
979 if (chunk_id == ID_FORM &&
980 chunk_id2 == ID_ILBM) {
981 avio_skip(pb, -4);
982 break;
983 } else if (chunk_id == ID_FORM &&
984 chunk_id2 == ID_ANIM) {
985 continue;
986 } else {
987 avio_skip(pb, data_size);
988 }
989 }
990 if (pb->eof_reached)
991 return AVERROR_EOF;
992
993 ret = av_get_packet(pb, pkt, data_size);
994 pkt->stream_index = iff->video_stream_index;
995 pkt->pos = orig_pos;
996 pkt->duration = get_anim_duration(pkt->data, pkt->size);
997 if (pos == 12)
998 pkt->flags |= AV_PKT_FLAG_KEY;
999
1000 if (iff->audio_stream_index >= 0) {
1001 iff->sbdy_pos = get_sbdy_offset(pkt->data, pkt->size);
1002 if (iff->sbdy_pos) {
1003 iff->sbdy_pos += orig_pos + 4;
1004 iff->resume_pos = avio_tell(pb);
1005 }
1006 }
1007 } else if (iff->video_stream_index >= 0 && iff->audio_stream_index < 0) { /* video only */
1008 if (iff->body_size > INT_MAX || !iff->body_size)
1009 return AVERROR_INVALIDDATA;
1010 ret = av_get_packet(pb, pkt, iff->body_size);
1011 pkt->stream_index = iff->video_stream_index;
1012 pkt->pos = pos;
1013 if (pos == iff->body_pos)
1014 pkt->flags |= AV_PKT_FLAG_KEY;
1015 } else {
1016 av_assert0(0);
1017 }
1018
1019 return ret;
1020 }
1021
1022 const FFInputFormat ff_iff_demuxer = {
1023 .p.name = "iff",
1024 .p.long_name = NULL_IF_CONFIG_SMALL("IFF (Interchange File Format)"),
1025 .p.flags = AVFMT_GENERIC_INDEX | AVFMT_NO_BYTE_SEEK,
1026 .priv_data_size = sizeof(IffDemuxContext),
1027 .read_probe = iff_probe,
1028 .read_header = iff_read_header,
1029 .read_packet = iff_read_packet,
1030 };
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