FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavformat/iff.c
Date: 2022-11-26 13:19:19
Exec Total Coverage
Lines: 250 526 47.5%
Branches: 135 380 35.5%

Line Branch Exec Source
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 */
127 2 static int get_metadata(AVFormatContext *s,
128 const char *const tag,
129 const unsigned data_size)
130 {
131
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2 uint8_t *buf = ((data_size + 1) == 0) ? NULL : av_malloc(data_size + 1);
132
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2 if (!buf)
134 return AVERROR(ENOMEM);
135
136
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2 if (avio_read(s->pb, buf, data_size) != data_size) {
137 av_free(buf);
138 return AVERROR(EIO);
139 }
140 2 buf[data_size] = 0;
141 2 av_dict_set(&s->metadata, tag, buf, AV_DICT_DONT_STRDUP_VAL);
142 2 return 0;
143 }
144
145 6780 static int iff_probe(const AVProbeData *p)
146 {
147 6780 const uint8_t *d = p->buf;
148
149
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6780 if ( (AV_RL32(d) == ID_FORM &&
150
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21 (AV_RL32(d+8) == ID_8SVX ||
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20 AV_RL32(d+8) == ID_16SV ||
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20 AV_RL32(d+8) == ID_MAUD ||
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20 AV_RL32(d+8) == ID_PBM ||
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19 AV_RL32(d+8) == ID_ACBM ||
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19 AV_RL32(d+8) == ID_DEEP ||
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19 AV_RL32(d+8) == ID_ILBM ||
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18 AV_RL32(d+8) == ID_RGB8 ||
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18 AV_RL32(d+8) == ID_ANIM ||
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18 AV_RL32(d+8) == ID_RGBN)) ||
160
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6777 (AV_RL32(d) == ID_FRM8 && AV_RL32(d+12) == ID_DSD))
161 4 return AVPROBE_SCORE_MAX;
162 6776 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 AVChannelLayout layout;
187 const uint32_t * dsd_layout;
188 } DSDLayoutDesc;
189
190 static const DSDLayoutDesc dsd_channel_layout[] = {
191 { AV_CHANNEL_LAYOUT_STEREO, dsd_stereo },
192 { AV_CHANNEL_LAYOUT_5POINT0, dsd_5point0 },
193 { AV_CHANNEL_LAYOUT_5POINT1, dsd_5point1 },
194 };
195
196 static const AVChannelLayout dsd_loudspeaker_config[] = {
197 AV_CHANNEL_LAYOUT_STEREO,
198 { 0 }, { 0 },
199 AV_CHANNEL_LAYOUT_5POINT0, AV_CHANNEL_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
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
249 1 static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
250 {
251 1 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
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4 while (avio_tell(pb) + 12 <= eof && !avio_feof(pb)) {
258 3 uint32_t tag = avio_rl32(pb);
259 3 uint64_t size = avio_rb64(pb);
260 3 uint64_t orig_pos = avio_tell(pb);
261
262
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3 if (size >= INT64_MAX)
263 return AVERROR_INVALIDDATA;
264
265
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3 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 1 case MKTAG('C','H','N','L'):
277
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1 if (size < 2)
278 return AVERROR_INVALIDDATA;
279 1 st->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
280 1 st->codecpar->ch_layout.nb_channels = avio_rb16(pb);
281
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1 if (size < 2 + st->codecpar->ch_layout.nb_channels * 4)
282 return AVERROR_INVALIDDATA;
283
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1 if (st->codecpar->ch_layout.nb_channels > FF_ARRAY_ELEMS(dsd_layout)) {
284 avpriv_request_sample(s, "channel layout");
285 break;
286 }
287
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3 for (i = 0; i < st->codecpar->ch_layout.nb_channels; i++)
288 2 dsd_layout[i] = avio_rl32(pb);
289
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1 for (i = 0; i < FF_ARRAY_ELEMS(dsd_channel_layout); i++) {
290 1 const DSDLayoutDesc * d = &dsd_channel_layout[i];
291
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1 if (d->layout.nb_channels == st->codecpar->ch_layout.nb_channels &&
292
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1 !memcmp(d->dsd_layout, dsd_layout, d->layout.nb_channels * sizeof(uint32_t))) {
293 1 st->codecpar->ch_layout = d->layout;
294 1 break;
295 }
296 }
297 1 break;
298
299 1 case MKTAG('C','M','P','R'):
300
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1 if (size < 4)
301 return AVERROR_INVALIDDATA;
302 1 st->codecpar->codec_tag = tag = avio_rl32(pb);
303 1 st->codecpar->codec_id = ff_codec_get_id(dsd_codec_tags, tag);
304
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1 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 1 break;
310
311 1 case MKTAG('F','S',' ',' '):
312
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1 if (size < 4)
313 return AVERROR_INVALIDDATA;
314 1 st->codecpar->sample_rate = avio_rb32(pb) / 8;
315 1 break;
316
317 case MKTAG('I','D','3',' '):
318 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, size);
319 if (id3v2_extra_meta) {
320 if ((ret = ff_id3v2_parse_apic(s, id3v2_extra_meta)) < 0 ||
321 (ret = ff_id3v2_parse_chapters(s, id3v2_extra_meta)) < 0) {
322 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
323 return ret;
324 }
325 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
326 }
327
328 if (size < avio_tell(pb) - orig_pos) {
329 av_log(s, AV_LOG_ERROR, "id3 exceeds chunk size\n");
330 return AVERROR_INVALIDDATA;
331 }
332 break;
333
334 case MKTAG('L','S','C','O'):
335 if (size < 2)
336 return AVERROR_INVALIDDATA;
337 config = avio_rb16(pb);
338 if (config != 0xFFFF) {
339 if (config < FF_ARRAY_ELEMS(dsd_loudspeaker_config))
340 st->codecpar->ch_layout = dsd_loudspeaker_config[config];
341 if (!st->codecpar->ch_layout.nb_channels)
342 avpriv_request_sample(s, "loudspeaker configuration %d", config);
343 }
344 break;
345 }
346
347 3 avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
348 }
349
350 1 return 0;
351 }
352
353 11 static int read_dst_frame(AVFormatContext *s, AVPacket *pkt)
354 {
355 11 IffDemuxContext *iff = s->priv_data;
356 11 AVIOContext *pb = s->pb;
357 uint32_t chunk_id;
358 uint64_t chunk_pos, data_pos, data_size;
359 11 int ret = AVERROR_EOF;
360
361
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12 while (!avio_feof(pb)) {
362 12 chunk_pos = avio_tell(pb);
363
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12 if (chunk_pos >= iff->body_end)
364 return AVERROR_EOF;
365
366 12 chunk_id = avio_rl32(pb);
367
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12 data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
368 12 data_pos = avio_tell(pb);
369
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12 if (data_size < 1 || data_size >= INT64_MAX)
371 return AVERROR_INVALIDDATA;
372
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12 switch (chunk_id) {
374 11 case ID_DSTF:
375
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11 if (!pkt) {
376
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1 iff->body_pos = avio_tell(pb) - (iff->is_64bit ? 12 : 8);
377 1 iff->body_size = iff->body_end - iff->body_pos;
378 1 return 0;
379 }
380 10 ret = av_get_packet(pb, pkt, data_size);
381
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10 if (ret < 0)
382 return ret;
383
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10 if (data_size & 1)
384 4 avio_skip(pb, 1);
385 10 pkt->flags |= AV_PKT_FLAG_KEY;
386 10 pkt->stream_index = 0;
387 10 pkt->duration = s->streams[0]->codecpar->sample_rate / 75;
388 10 pkt->pos = chunk_pos;
389
390 10 chunk_pos = avio_tell(pb);
391
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10 if (chunk_pos >= iff->body_end)
392 1 return 0;
393
394 9 avio_seek(pb, chunk_pos, SEEK_SET);
395 9 return 0;
396
397 1 case ID_FRTE:
398
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1 if (data_size < 4)
399 return AVERROR_INVALIDDATA;
400 1 s->streams[0]->duration = avio_rb32(pb) * (uint64_t)s->streams[0]->codecpar->sample_rate / 75;
401
402 1 break;
403 }
404
405 1 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
417 4 static int iff_read_header(AVFormatContext *s)
418 {
419 4 IffDemuxContext *iff = s->priv_data;
420 4 AVIOContext *pb = s->pb;
421 AVStream *st;
422 uint8_t *buf;
423 uint32_t chunk_id;
424 uint64_t data_size;
425 4 uint32_t screenmode = 0, num, den;
426 4 unsigned transparency = 0;
427 4 unsigned masking = 0; // no mask
428 uint8_t fmt[16];
429 int fmt_size;
430
431 4 st = avformat_new_stream(s, NULL);
432
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4 if (!st)
433 return AVERROR(ENOMEM);
434
435 4 st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
436 4 iff->is_64bit = avio_rl32(pb) == ID_FRM8;
437
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4 avio_skip(pb, iff->is_64bit ? 8 : 4);
438 // codec_tag used by ByteRun1 decoder to distinguish progressive (PBM) and interlaced (ILBM) content
439 4 st->codecpar->codec_tag = avio_rl32(pb);
440
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4 if (st->codecpar->codec_tag == ID_ANIM) {
441 avio_skip(pb, 12);
442 }
443 4 iff->bitmap_compression = -1;
444 4 iff->svx8_compression = -1;
445 4 iff->maud_bits = -1;
446 4 iff->maud_compression = -1;
447
448
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41 while(!avio_feof(pb)) {
449 uint64_t orig_pos;
450 int res;
451 37 const char *metadata_tag = NULL;
452 int version, nb_comments, i;
453 37 chunk_id = avio_rl32(pb);
454
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37 data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
455 37 orig_pos = avio_tell(pb);
456
457
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37 if (data_size >= INT64_MAX)
458 return AVERROR_INVALIDDATA;
459
460
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37 switch(chunk_id) {
461 1 case ID_VHDR:
462 1 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
463
464
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1 if (data_size < 14)
465 return AVERROR_INVALIDDATA;
466 1 avio_skip(pb, 12);
467 1 st->codecpar->sample_rate = avio_rb16(pb);
468
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1 if (data_size >= 16) {
469 1 avio_skip(pb, 1);
470 1 iff->svx8_compression = avio_r8(pb);
471 }
472 1 break;
473
474 case ID_MHDR:
475 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
476
477 if (data_size < 32)
478 return AVERROR_INVALIDDATA;
479 avio_skip(pb, 4);
480 iff->maud_bits = avio_rb16(pb);
481 avio_skip(pb, 2);
482 num = avio_rb32(pb);
483 den = avio_rb16(pb);
484 if (!den)
485 return AVERROR_INVALIDDATA;
486 avio_skip(pb, 2);
487 st->codecpar->sample_rate = num / den;
488 st->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
489 st->codecpar->ch_layout.nb_channels = avio_rb16(pb);
490 iff->maud_compression = avio_rb16(pb);
491 if (st->codecpar->ch_layout.nb_channels == 1)
492 st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
493 else if (st->codecpar->ch_layout.nb_channels == 2)
494 st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
495 break;
496
497 4 case ID_ABIT:
498 case ID_BODY:
499 case ID_DBOD:
500 case ID_DSD:
501 case ID_DST:
502 case ID_MDAT:
503 4 iff->body_pos = avio_tell(pb);
504
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4 if (iff->body_pos < 0 || iff->body_pos + data_size > INT64_MAX)
505 return AVERROR_INVALIDDATA;
506
507 4 iff->body_end = iff->body_pos + data_size;
508 4 iff->body_size = data_size;
509
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4 if (chunk_id == ID_DST) {
510 1 int ret = read_dst_frame(s, NULL);
511
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1 if (ret < 0)
512 return ret;
513 }
514 4 break;
515
516 case ID_CHAN:
517 if (data_size < 4)
518 return AVERROR_INVALIDDATA;
519 if (avio_rb32(pb) < 6) {
520 st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
521 } else {
522 st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
523 }
524 break;
525
526 1 case ID_CAMG:
527
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1 if (data_size < 4)
528 return AVERROR_INVALIDDATA;
529 1 screenmode = avio_rb32(pb);
530 1 break;
531
532 2 case ID_CMAP:
533
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2 if (data_size < 3 || data_size > 768 || data_size % 3) {
534 av_log(s, AV_LOG_ERROR, "Invalid CMAP chunk size %"PRIu64"\n",
535 data_size);
536 return AVERROR_INVALIDDATA;
537 }
538 2 res = ff_alloc_extradata(st->codecpar,
539 2 data_size + IFF_EXTRA_VIDEO_SIZE);
540
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2 if (res < 0)
541 return res;
542
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2 if (avio_read(pb, st->codecpar->extradata + IFF_EXTRA_VIDEO_SIZE, data_size) < 0) {
543 av_freep(&st->codecpar->extradata);
544 st->codecpar->extradata_size = 0;
545 return AVERROR(EIO);
546 }
547 2 break;
548
549 2 case ID_BMHD:
550 2 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
551
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2 if (data_size <= 8)
552 return AVERROR_INVALIDDATA;
553 2 st->codecpar->width = avio_rb16(pb);
554 2 st->codecpar->height = avio_rb16(pb);
555 2 avio_skip(pb, 4); // x, y offset
556 2 st->codecpar->bits_per_coded_sample = avio_r8(pb);
557
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2 if (data_size >= 10)
558 2 masking = avio_r8(pb);
559
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2 if (data_size >= 11)
560 2 iff->bitmap_compression = avio_r8(pb);
561
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2 if (data_size >= 14) {
562 2 avio_skip(pb, 1); // padding
563 2 transparency = avio_rb16(pb);
564 }
565
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2 if (data_size >= 16) {
566 2 st->sample_aspect_ratio.num = avio_r8(pb);
567 2 st->sample_aspect_ratio.den = avio_r8(pb);
568 }
569 2 break;
570
571 case ID_ANHD:
572 break;
573
574 case ID_DPAN:
575 avio_skip(pb, 2);
576 st->duration = avio_rb16(pb);
577 break;
578
579 case ID_DPEL:
580 if (data_size < 4 || (data_size & 3))
581 return AVERROR_INVALIDDATA;
582 if ((fmt_size = avio_read(pb, fmt, sizeof(fmt))) < 0)
583 return fmt_size;
584 if (fmt_size == sizeof(deep_rgb24) && !memcmp(fmt, deep_rgb24, sizeof(deep_rgb24)))
585 st->codecpar->format = AV_PIX_FMT_RGB24;
586 else if (fmt_size == sizeof(deep_rgba) && !memcmp(fmt, deep_rgba, sizeof(deep_rgba)))
587 st->codecpar->format = AV_PIX_FMT_RGBA;
588 else if (fmt_size == sizeof(deep_bgra) && !memcmp(fmt, deep_bgra, sizeof(deep_bgra)))
589 st->codecpar->format = AV_PIX_FMT_BGRA;
590 else if (fmt_size == sizeof(deep_argb) && !memcmp(fmt, deep_argb, sizeof(deep_argb)))
591 st->codecpar->format = AV_PIX_FMT_ARGB;
592 else if (fmt_size == sizeof(deep_abgr) && !memcmp(fmt, deep_abgr, sizeof(deep_abgr)))
593 st->codecpar->format = AV_PIX_FMT_ABGR;
594 else {
595 avpriv_request_sample(s, "color format %.16s", fmt);
596 return AVERROR_PATCHWELCOME;
597 }
598 break;
599
600 case ID_DGBL:
601 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
602 if (data_size < 8)
603 return AVERROR_INVALIDDATA;
604 st->codecpar->width = avio_rb16(pb);
605 st->codecpar->height = avio_rb16(pb);
606 iff->bitmap_compression = avio_rb16(pb);
607 st->sample_aspect_ratio.num = avio_r8(pb);
608 st->sample_aspect_ratio.den = avio_r8(pb);
609 st->codecpar->bits_per_coded_sample = 24;
610 break;
611
612 case ID_DLOC:
613 if (data_size < 4)
614 return AVERROR_INVALIDDATA;
615 st->codecpar->width = avio_rb16(pb);
616 st->codecpar->height = avio_rb16(pb);
617 break;
618
619 case ID_TVDC:
620 if (data_size < sizeof(iff->tvdc))
621 return AVERROR_INVALIDDATA;
622 res = avio_read(pb, iff->tvdc, sizeof(iff->tvdc));
623 if (res < 0)
624 return res;
625 break;
626
627 1 case ID_ANNO:
628 1 case ID_TEXT: metadata_tag = "comment"; break;
629 case ID_AUTH: metadata_tag = "artist"; break;
630 case ID_COPYRIGHT: metadata_tag = "copyright"; break;
631 1 case ID_NAME: metadata_tag = "title"; break;
632
633 /* DSD tags */
634
635 1 case MKTAG('F','V','E','R'):
636
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1 if (data_size < 4)
637 return AVERROR_INVALIDDATA;
638 1 version = avio_rb32(pb);
639 1 av_log(s, AV_LOG_DEBUG, "DSIFF v%d.%d.%d.%d\n",version >> 24, (version >> 16) & 0xFF, (version >> 8) & 0xFF, version & 0xFF);
640 1 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
641 1 break;
642
643 case MKTAG('D','I','I','N'):
644 res = parse_dsd_diin(s, st, orig_pos + data_size);
645 if (res < 0)
646 return res;
647 break;
648
649 1 case MKTAG('P','R','O','P'):
650
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1 if (data_size < 4)
651 return AVERROR_INVALIDDATA;
652
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1 if (avio_rl32(pb) != MKTAG('S','N','D',' ')) {
653 avpriv_request_sample(s, "unknown property type");
654 break;
655 }
656 1 res = parse_dsd_prop(s, st, orig_pos + data_size);
657
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1 if (res < 0)
658 return res;
659 1 break;
660
661 case MKTAG('C','O','M','T'):
662 if (data_size < 2)
663 return AVERROR_INVALIDDATA;
664 nb_comments = avio_rb16(pb);
665 for (i = 0; i < nb_comments; i++) {
666 int year, mon, day, hour, min, type, ref;
667 char tmp[24];
668 const char *tag;
669 int metadata_size;
670
671 year = avio_rb16(pb);
672 mon = avio_r8(pb);
673 day = avio_r8(pb);
674 hour = avio_r8(pb);
675 min = avio_r8(pb);
676 snprintf(tmp, sizeof(tmp), "%04d-%02d-%02d %02d:%02d", year, mon, day, hour, min);
677 av_dict_set(&st->metadata, "comment_time", tmp, 0);
678
679 type = avio_rb16(pb);
680 ref = avio_rb16(pb);
681 switch (type) {
682 case 1:
683 if (!i)
684 tag = "channel_comment";
685 else {
686 snprintf(tmp, sizeof(tmp), "channel%d_comment", ref);
687 tag = tmp;
688 }
689 break;
690 case 2:
691 tag = ref < FF_ARRAY_ELEMS(dsd_source_comment) ? dsd_source_comment[ref] : "source_comment";
692 break;
693 case 3:
694 tag = ref < FF_ARRAY_ELEMS(dsd_history_comment) ? dsd_history_comment[ref] : "file_history";
695 break;
696 default:
697 tag = "comment";
698 }
699
700 metadata_size = avio_rb32(pb);
701 if ((res = get_metadata(s, tag, metadata_size)) < 0) {
702 av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", tag);
703 return res;
704 }
705
706 if (metadata_size & 1)
707 avio_skip(pb, 1);
708 }
709 break;
710 }
711
712
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37 if (metadata_tag) {
713
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2 if ((res = get_metadata(s, metadata_tag, data_size)) < 0) {
714 av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
715 return res;
716 }
717 }
718 37 avio_skip(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1));
719 }
720
721
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4 if (st->codecpar->codec_tag == ID_ANIM)
722 avio_seek(pb, 12, SEEK_SET);
723 else
724 4 avio_seek(pb, iff->body_pos, SEEK_SET);
725
726
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4 switch(st->codecpar->codec_type) {
727 2 case AVMEDIA_TYPE_AUDIO:
728 2 avpriv_set_pts_info(st, 32, 1, st->codecpar->sample_rate);
729
730
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2 if (st->codecpar->codec_tag == ID_16SV)
731 st->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE_PLANAR;
732
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2 else if (st->codecpar->codec_tag == ID_MAUD) {
733 if (iff->maud_bits == 8 && !iff->maud_compression) {
734 st->codecpar->codec_id = AV_CODEC_ID_PCM_U8;
735 } else if (iff->maud_bits == 16 && !iff->maud_compression) {
736 st->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE;
737 } else if (iff->maud_bits == 8 && iff->maud_compression == 2) {
738 st->codecpar->codec_id = AV_CODEC_ID_PCM_ALAW;
739 } else if (iff->maud_bits == 8 && iff->maud_compression == 3) {
740 st->codecpar->codec_id = AV_CODEC_ID_PCM_MULAW;
741 } else {
742 avpriv_request_sample(s, "compression %d and bit depth %d", iff->maud_compression, iff->maud_bits);
743 return AVERROR_PATCHWELCOME;
744 }
745
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2 } else if (st->codecpar->codec_tag != ID_DSD &&
746
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2 st->codecpar->codec_tag != ID_DST) {
747
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1 switch (iff->svx8_compression) {
748 case COMP_NONE:
749 st->codecpar->codec_id = AV_CODEC_ID_PCM_S8_PLANAR;
750 break;
751 1 case COMP_FIB:
752 1 st->codecpar->codec_id = AV_CODEC_ID_8SVX_FIB;
753 1 break;
754 case COMP_EXP:
755 st->codecpar->codec_id = AV_CODEC_ID_8SVX_EXP;
756 break;
757 default:
758 av_log(s, AV_LOG_ERROR,
759 "Unknown SVX8 compression method '%d'\n", iff->svx8_compression);
760 return -1;
761 }
762 }
763
764 2 st->codecpar->bits_per_coded_sample = av_get_bits_per_sample(st->codecpar->codec_id);
765 2 st->codecpar->bit_rate = (int64_t)st->codecpar->ch_layout.nb_channels *
766 2 st->codecpar->sample_rate *
767 2 st->codecpar->bits_per_coded_sample;
768 2 st->codecpar->block_align = st->codecpar->ch_layout.nb_channels *
769 2 st->codecpar->bits_per_coded_sample;
770
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2 if ((st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) && st->codecpar->block_align <= 0)
771 return AVERROR_INVALIDDATA;
772 2 break;
773
774 2 case AVMEDIA_TYPE_VIDEO:
775 2 iff->bpp = st->codecpar->bits_per_coded_sample;
776
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2 if (st->codecpar->codec_tag == ID_ANIM)
777 avpriv_set_pts_info(st, 32, 1, 60);
778
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2 if ((screenmode & 0x800 /* Hold And Modify */) && iff->bpp <= 8) {
779 iff->ham = iff->bpp > 6 ? 6 : 4;
780 st->codecpar->bits_per_coded_sample = 24;
781 }
782
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2 iff->flags = (screenmode & 0x80 /* Extra HalfBrite */) && iff->bpp <= 8;
783 2 iff->masking = masking;
784 2 iff->transparency = transparency;
785
786
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2 if (!st->codecpar->extradata) {
787 int ret = ff_alloc_extradata(st->codecpar, IFF_EXTRA_VIDEO_SIZE);
788 if (ret < 0)
789 return ret;
790 }
791
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2 av_assert0(st->codecpar->extradata_size >= IFF_EXTRA_VIDEO_SIZE);
792 2 buf = st->codecpar->extradata;
793 2 bytestream_put_be16(&buf, IFF_EXTRA_VIDEO_SIZE);
794 2 bytestream_put_byte(&buf, iff->bitmap_compression);
795 2 bytestream_put_byte(&buf, iff->bpp);
796 2 bytestream_put_byte(&buf, iff->ham);
797 2 bytestream_put_byte(&buf, iff->flags);
798 2 bytestream_put_be16(&buf, iff->transparency);
799 2 bytestream_put_byte(&buf, iff->masking);
800 2 bytestream_put_buffer(&buf, iff->tvdc, sizeof(iff->tvdc));
801 2 st->codecpar->codec_id = AV_CODEC_ID_IFF_ILBM;
802 2 break;
803 default:
804 return -1;
805 }
806
807 4 return 0;
808 }
809
810 static unsigned get_anim_duration(uint8_t *buf, int size)
811 {
812 GetByteContext gb;
813
814 bytestream2_init(&gb, buf, size);
815 bytestream2_skip(&gb, 4);
816 while (bytestream2_get_bytes_left(&gb) > 8) {
817 unsigned chunk = bytestream2_get_le32(&gb);
818 unsigned size = bytestream2_get_be32(&gb);
819
820 if (chunk == ID_ANHD) {
821 if (size < 40)
822 break;
823 bytestream2_skip(&gb, 14);
824 return bytestream2_get_be32(&gb);
825 } else {
826 bytestream2_skip(&gb, size + size & 1);
827 }
828 }
829 return 10;
830 }
831
832 21 static int iff_read_packet(AVFormatContext *s,
833 AVPacket *pkt)
834 {
835 21 IffDemuxContext *iff = s->priv_data;
836 21 AVIOContext *pb = s->pb;
837 21 AVStream *st = s->streams[0];
838 int ret;
839 21 int64_t pos = avio_tell(pb);
840
841
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21 if (avio_feof(pb))
842 return AVERROR_EOF;
843
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21 if (st->codecpar->codec_tag != ID_ANIM && pos >= iff->body_end)
844 8 return AVERROR_EOF;
845
846
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13 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
847
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11 if (st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) {
848 ret = av_get_packet(pb, pkt, FFMIN(iff->body_end - pos, 1024 * st->codecpar->block_align));
849
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11 } else if (st->codecpar->codec_tag == ID_DST) {
850 10 return read_dst_frame(s, pkt);
851 } else {
852
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1 if (iff->body_size > INT_MAX || !iff->body_size)
853 return AVERROR_INVALIDDATA;
854 1 ret = av_get_packet(pb, pkt, iff->body_size);
855 }
856
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2 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
857
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2 st->codecpar->codec_tag == ID_ANIM) {
858 uint64_t data_size, orig_pos;
859 uint32_t chunk_id, chunk_id2;
860
861 while (!avio_feof(pb)) {
862 if (avio_feof(pb))
863 return AVERROR_EOF;
864
865 orig_pos = avio_tell(pb);
866 chunk_id = avio_rl32(pb);
867 data_size = avio_rb32(pb);
868 chunk_id2 = avio_rl32(pb);
869
870 if (chunk_id == ID_FORM &&
871 chunk_id2 == ID_ILBM) {
872 avio_skip(pb, -4);
873 break;
874 } else if (chunk_id == ID_FORM &&
875 chunk_id2 == ID_ANIM) {
876 continue;
877 } else {
878 avio_skip(pb, data_size);
879 }
880 }
881 ret = av_get_packet(pb, pkt, data_size);
882 pkt->pos = orig_pos;
883 pkt->duration = get_anim_duration(pkt->data, pkt->size);
884 if (pos == 12)
885 pkt->flags |= AV_PKT_FLAG_KEY;
886
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2 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
887
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2 st->codecpar->codec_tag != ID_ANIM) {
888
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2 if (iff->body_size > INT_MAX || !iff->body_size)
889 return AVERROR_INVALIDDATA;
890 2 ret = av_get_packet(pb, pkt, iff->body_size);
891 2 pkt->pos = pos;
892
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2 if (pos == iff->body_pos)
893 2 pkt->flags |= AV_PKT_FLAG_KEY;
894 } else {
895 av_assert0(0);
896 }
897
898
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3 if (ret < 0)
899 return ret;
900 3 pkt->stream_index = 0;
901 3 return ret;
902 }
903
904 const AVInputFormat ff_iff_demuxer = {
905 .name = "iff",
906 .long_name = NULL_IF_CONFIG_SMALL("IFF (Interchange File Format)"),
907 .priv_data_size = sizeof(IffDemuxContext),
908 .read_probe = iff_probe,
909 .read_header = iff_read_header,
910 .read_packet = iff_read_packet,
911 .flags = AVFMT_GENERIC_INDEX | AVFMT_NO_BYTE_SEEK,
912 };
913