FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/iff.c
Date: 2024-11-20 23:03:26
Exec Total Coverage
Lines: 250 527 47.4%
Functions: 6 8 75.0%
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 "libavutil/mem.h"
38 #include "libavcodec/bytestream.h"
39 #include "avformat.h"
40 #include "demux.h"
41 #include "id3v2.h"
42 #include "internal.h"
43
44 #define ID_8SVX MKTAG('8','S','V','X')
45 #define ID_16SV MKTAG('1','6','S','V')
46 #define ID_MAUD MKTAG('M','A','U','D')
47 #define ID_MHDR MKTAG('M','H','D','R')
48 #define ID_MDAT MKTAG('M','D','A','T')
49 #define ID_VHDR MKTAG('V','H','D','R')
50 #define ID_ATAK MKTAG('A','T','A','K')
51 #define ID_RLSE MKTAG('R','L','S','E')
52 #define ID_CHAN MKTAG('C','H','A','N')
53 #define ID_PBM MKTAG('P','B','M',' ')
54 #define ID_ILBM MKTAG('I','L','B','M')
55 #define ID_BMHD MKTAG('B','M','H','D')
56 #define ID_DGBL MKTAG('D','G','B','L')
57 #define ID_CAMG MKTAG('C','A','M','G')
58 #define ID_CMAP MKTAG('C','M','A','P')
59 #define ID_ACBM MKTAG('A','C','B','M')
60 #define ID_DEEP MKTAG('D','E','E','P')
61 #define ID_RGB8 MKTAG('R','G','B','8')
62 #define ID_RGBN MKTAG('R','G','B','N')
63 #define ID_DSD MKTAG('D','S','D',' ')
64 #define ID_DST MKTAG('D','S','T',' ')
65 #define ID_DSTC MKTAG('D','S','T','C')
66 #define ID_DSTF MKTAG('D','S','T','F')
67 #define ID_FRTE MKTAG('F','R','T','E')
68 #define ID_ANIM MKTAG('A','N','I','M')
69 #define ID_ANHD MKTAG('A','N','H','D')
70 #define ID_DLTA MKTAG('D','L','T','A')
71 #define ID_DPAN MKTAG('D','P','A','N')
72
73 #define ID_FORM MKTAG('F','O','R','M')
74 #define ID_FRM8 MKTAG('F','R','M','8')
75 #define ID_ANNO MKTAG('A','N','N','O')
76 #define ID_AUTH MKTAG('A','U','T','H')
77 #define ID_CHRS MKTAG('C','H','R','S')
78 #define ID_COPYRIGHT MKTAG('(','c',')',' ')
79 #define ID_CSET MKTAG('C','S','E','T')
80 #define ID_FVER MKTAG('F','V','E','R')
81 #define ID_NAME MKTAG('N','A','M','E')
82 #define ID_TEXT MKTAG('T','E','X','T')
83 #define ID_ABIT MKTAG('A','B','I','T')
84 #define ID_BODY MKTAG('B','O','D','Y')
85 #define ID_DBOD MKTAG('D','B','O','D')
86 #define ID_DPEL MKTAG('D','P','E','L')
87 #define ID_DLOC MKTAG('D','L','O','C')
88 #define ID_TVDC MKTAG('T','V','D','C')
89
90 #define LEFT 2
91 #define RIGHT 4
92 #define STEREO 6
93
94 /**
95 * This number of bytes if added at the beginning of each AVPacket
96 * which contain additional information about video properties
97 * which has to be shared between demuxer and decoder.
98 * This number may change between frames, e.g. the demuxer might
99 * set it to smallest possible size of 2 to indicate that there's
100 * no extradata changing in this frame.
101 */
102 #define IFF_EXTRA_VIDEO_SIZE 41
103
104 typedef enum {
105 COMP_NONE,
106 COMP_FIB,
107 COMP_EXP
108 } svx8_compression_type;
109
110 typedef struct IffDemuxContext {
111 int is_64bit; ///< chunk size is 64-bit
112 int64_t body_pos;
113 int64_t body_end;
114 uint32_t body_size;
115 svx8_compression_type svx8_compression;
116 unsigned maud_bits;
117 unsigned maud_compression;
118 unsigned bitmap_compression; ///< delta compression method used
119 unsigned bpp; ///< bits per plane to decode (differs from bits_per_coded_sample if HAM)
120 unsigned ham; ///< 0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise)
121 unsigned flags; ///< 1 for EHB, 0 is no extra half darkening
122 unsigned transparency; ///< transparency color index in palette
123 unsigned masking; ///< masking method used
124 uint8_t tvdc[32]; ///< TVDC lookup table
125 int64_t pts;
126 } IffDemuxContext;
127
128 /* Metadata string read */
129 2 static int get_metadata(AVFormatContext *s,
130 const char *const tag,
131 const unsigned data_size)
132 {
133
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 2 uint8_t *buf = ((data_size + 1) == 0) ? NULL : av_malloc(data_size + 1);
134
135
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 2 if (!buf)
136 ✗ return AVERROR(ENOMEM);
137
138
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 2 if (avio_read(s->pb, buf, data_size) != data_size) {
139 ✗ av_free(buf);
140 ✗ return AVERROR(EIO);
141 }
142 2 buf[data_size] = 0;
143 2 av_dict_set(&s->metadata, tag, buf, AV_DICT_DONT_STRDUP_VAL);
144 2 return 0;
145 }
146
147 7186 static int iff_probe(const AVProbeData *p)
148 {
149 7186 const uint8_t *d = p->buf;
150
151
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 7186 if ( (AV_RL32(d) == ID_FORM &&
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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)) ||
162
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 7183 (AV_RL32(d) == ID_FRM8 && AV_RL32(d+12) == ID_DSD))
163 4 return AVPROBE_SCORE_MAX;
164 7182 return 0;
165 }
166
167 static const AVCodecTag dsd_codec_tags[] = {
168 { AV_CODEC_ID_DSD_MSBF, ID_DSD },
169 { AV_CODEC_ID_DST, ID_DST },
170 { AV_CODEC_ID_NONE, 0 },
171 };
172
173
174 #define DSD_SLFT MKTAG('S','L','F','T')
175 #define DSD_SRGT MKTAG('S','R','G','T')
176 #define DSD_MLFT MKTAG('M','L','F','T')
177 #define DSD_MRGT MKTAG('M','R','G','T')
178 #define DSD_C MKTAG('C',' ',' ',' ')
179 #define DSD_LS MKTAG('L','S',' ',' ')
180 #define DSD_RS MKTAG('R','S',' ',' ')
181 #define DSD_LFE MKTAG('L','F','E',' ')
182
183 static const uint32_t dsd_stereo[] = { DSD_SLFT, DSD_SRGT };
184 static const uint32_t dsd_5point0[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LS, DSD_RS };
185 static const uint32_t dsd_5point1[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LFE, DSD_LS, DSD_RS };
186
187 typedef struct {
188 AVChannelLayout layout;
189 const uint32_t * dsd_layout;
190 } DSDLayoutDesc;
191
192 static const DSDLayoutDesc dsd_channel_layout[] = {
193 { AV_CHANNEL_LAYOUT_STEREO, dsd_stereo },
194 { AV_CHANNEL_LAYOUT_5POINT0, dsd_5point0 },
195 { AV_CHANNEL_LAYOUT_5POINT1, dsd_5point1 },
196 };
197
198 static const AVChannelLayout dsd_loudspeaker_config[] = {
199 AV_CHANNEL_LAYOUT_STEREO,
200 { 0 }, { 0 },
201 AV_CHANNEL_LAYOUT_5POINT0, AV_CHANNEL_LAYOUT_5POINT1,
202 };
203
204 static const char * dsd_source_comment[] = {
205 "dsd_source_comment",
206 "analogue_source_comment",
207 "pcm_source_comment",
208 };
209
210 static const char * dsd_history_comment[] = {
211 "general_remark",
212 "operator_name",
213 "creating_machine",
214 "timezone",
215 "file_revision"
216 };
217
218 ✗ static int parse_dsd_diin(AVFormatContext *s, AVStream *st, uint64_t eof)
219 {
220 ✗ AVIOContext *pb = s->pb;
221
222 ✗ while (av_sat_add64(avio_tell(pb), 12) <= eof && !avio_feof(pb)) {
223 ✗ uint32_t tag = avio_rl32(pb);
224 ✗ uint64_t size = avio_rb64(pb);
225 ✗ uint64_t orig_pos = avio_tell(pb);
226 ✗ const char * metadata_tag = NULL;
227
228 ✗ if (size >= INT64_MAX)
229 ✗ return AVERROR_INVALIDDATA;
230
231 ✗ switch(tag) {
232 ✗ case MKTAG('D','I','A','R'): metadata_tag = "artist"; break;
233 ✗ case MKTAG('D','I','T','I'): metadata_tag = "title"; break;
234 }
235
236 ✗ if (metadata_tag && size > 4) {
237 ✗ unsigned int tag_size = avio_rb32(pb);
238 ✗ int ret = get_metadata(s, metadata_tag, FFMIN(tag_size, size - 4));
239 ✗ if (ret < 0) {
240 ✗ av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
241 ✗ return ret;
242 }
243 }
244
245 ✗ avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
246 }
247
248 ✗ return 0;
249 }
250
251 1 static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
252 {
253 1 AVIOContext *pb = s->pb;
254 char abss[24];
255 int hour, min, sec, i, ret, config;
256 int dsd_layout[6];
257 ID3v2ExtraMeta *id3v2_extra_meta;
258
259
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 4 while (av_sat_add64(avio_tell(pb), 12) <= eof && !avio_feof(pb)) {
260 3 uint32_t tag = avio_rl32(pb);
261 3 uint64_t size = avio_rb64(pb);
262 3 uint64_t orig_pos = avio_tell(pb);
263
264
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 3 if (size >= INT64_MAX)
265 ✗ return AVERROR_INVALIDDATA;
266
267
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 3 switch(tag) {
268 ✗ case MKTAG('A','B','S','S'):
269 ✗ if (size < 8)
270 ✗ return AVERROR_INVALIDDATA;
271 ✗ hour = avio_rb16(pb);
272 ✗ min = avio_r8(pb);
273 ✗ sec = avio_r8(pb);
274 ✗ snprintf(abss, sizeof(abss), "%02dh:%02dm:%02ds:%d", hour, min, sec, avio_rb32(pb));
275 ✗ av_dict_set(&st->metadata, "absolute_start_time", abss, 0);
276 ✗ break;
277
278 1 case MKTAG('C','H','N','L'):
279
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 1 if (size < 2)
280 ✗ return AVERROR_INVALIDDATA;
281 1 st->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
282 1 st->codecpar->ch_layout.nb_channels = avio_rb16(pb);
283
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 1 if (size < 2 + st->codecpar->ch_layout.nb_channels * 4)
284 ✗ return AVERROR_INVALIDDATA;
285
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 1 if (st->codecpar->ch_layout.nb_channels > FF_ARRAY_ELEMS(dsd_layout)) {
286 ✗ avpriv_request_sample(s, "channel layout");
287 ✗ break;
288 }
289
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 3 for (i = 0; i < st->codecpar->ch_layout.nb_channels; i++)
290 2 dsd_layout[i] = avio_rl32(pb);
291
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 1 for (i = 0; i < FF_ARRAY_ELEMS(dsd_channel_layout); i++) {
292 1 const DSDLayoutDesc * d = &dsd_channel_layout[i];
293
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 1 if (d->layout.nb_channels == st->codecpar->ch_layout.nb_channels &&
294
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 1 !memcmp(d->dsd_layout, dsd_layout, d->layout.nb_channels * sizeof(uint32_t))) {
295 1 st->codecpar->ch_layout = d->layout;
296 1 break;
297 }
298 }
299 1 break;
300
301 1 case MKTAG('C','M','P','R'):
302
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 1 if (size < 4)
303 ✗ return AVERROR_INVALIDDATA;
304 1 st->codecpar->codec_tag = tag = avio_rl32(pb);
305 1 st->codecpar->codec_id = ff_codec_get_id(dsd_codec_tags, tag);
306
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 1 if (!st->codecpar->codec_id) {
307 ✗ av_log(s, AV_LOG_ERROR, "'%s' compression is not supported\n",
308 ✗ av_fourcc2str(tag));
309 ✗ return AVERROR_PATCHWELCOME;
310 }
311 1 break;
312
313 1 case MKTAG('F','S',' ',' '):
314
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 1 if (size < 4)
315 ✗ return AVERROR_INVALIDDATA;
316 1 st->codecpar->sample_rate = avio_rb32(pb) / 8;
317 1 break;
318
319 ✗ case MKTAG('I','D','3',' '):
320 ✗ ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, size);
321 ✗ if (id3v2_extra_meta) {
322 ✗ if ((ret = ff_id3v2_parse_apic(s, id3v2_extra_meta)) < 0 ||
323 ✗ (ret = ff_id3v2_parse_chapters(s, id3v2_extra_meta)) < 0) {
324 ✗ ff_id3v2_free_extra_meta(&id3v2_extra_meta);
325 ✗ return ret;
326 }
327 ✗ ff_id3v2_free_extra_meta(&id3v2_extra_meta);
328 }
329
330 ✗ if (size < avio_tell(pb) - orig_pos) {
331 ✗ av_log(s, AV_LOG_ERROR, "id3 exceeds chunk size\n");
332 ✗ return AVERROR_INVALIDDATA;
333 }
334 ✗ break;
335
336 ✗ case MKTAG('L','S','C','O'):
337 ✗ if (size < 2)
338 ✗ return AVERROR_INVALIDDATA;
339 ✗ config = avio_rb16(pb);
340 ✗ if (config != 0xFFFF) {
341 ✗ if (config < FF_ARRAY_ELEMS(dsd_loudspeaker_config))
342 ✗ st->codecpar->ch_layout = dsd_loudspeaker_config[config];
343 ✗ if (!st->codecpar->ch_layout.nb_channels)
344 ✗ avpriv_request_sample(s, "loudspeaker configuration %d", config);
345 }
346 ✗ break;
347 }
348
349 3 avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
350 }
351
352 1 return 0;
353 }
354
355 11 static int read_dst_frame(AVFormatContext *s, AVPacket *pkt)
356 {
357 11 IffDemuxContext *iff = s->priv_data;
358 11 AVIOContext *pb = s->pb;
359 uint32_t chunk_id;
360 uint64_t chunk_pos, data_pos, data_size;
361 11 int ret = AVERROR_EOF;
362
363
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 12 while (!avio_feof(pb)) {
364 12 chunk_pos = avio_tell(pb);
365
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 12 if (chunk_pos >= iff->body_end)
366 ✗ return AVERROR_EOF;
367
368 12 chunk_id = avio_rl32(pb);
369
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 12 data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
370 12 data_pos = avio_tell(pb);
371
372
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373 ✗ return AVERROR_INVALIDDATA;
374
375
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376 11 case ID_DSTF:
377
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 11 if (!pkt) {
378
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 1 iff->body_pos = avio_tell(pb) - (iff->is_64bit ? 12 : 8);
379 1 iff->body_size = iff->body_end - iff->body_pos;
380 1 return 0;
381 }
382 10 ret = av_get_packet(pb, pkt, data_size);
383
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 10 if (ret < 0)
384 ✗ return ret;
385
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 10 if (data_size & 1)
386 4 avio_skip(pb, 1);
387 10 pkt->flags |= AV_PKT_FLAG_KEY;
388 10 pkt->stream_index = 0;
389 10 pkt->duration = s->streams[0]->codecpar->sample_rate / 75;
390 10 pkt->pos = chunk_pos;
391
392 10 chunk_pos = avio_tell(pb);
393
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 10 if (chunk_pos >= iff->body_end)
394 1 return 0;
395
396 9 avio_seek(pb, chunk_pos, SEEK_SET);
397 9 return 0;
398
399 1 case ID_FRTE:
400
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 1 if (data_size < 4)
401 ✗ return AVERROR_INVALIDDATA;
402 1 s->streams[0]->duration = avio_rb32(pb) * (uint64_t)s->streams[0]->codecpar->sample_rate / 75;
403
404 1 break;
405 }
406
407 1 avio_skip(pb, data_size - (avio_tell(pb) - data_pos) + (data_size & 1));
408 }
409
410 ✗ return ret;
411 }
412
413 static const uint8_t deep_rgb24[] = {0, 0, 0, 3, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
414 static const uint8_t deep_rgba[] = {0, 0, 0, 4, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
415 static const uint8_t deep_bgra[] = {0, 0, 0, 4, 0, 3, 0, 8, 0, 2, 0, 8, 0, 1, 0, 8};
416 static const uint8_t deep_argb[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 1, 0, 8, 0, 2, 0, 8};
417 static const uint8_t deep_abgr[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 3, 0, 8, 0, 2, 0, 8};
418
419 4 static int iff_read_header(AVFormatContext *s)
420 {
421 4 IffDemuxContext *iff = s->priv_data;
422 4 AVIOContext *pb = s->pb;
423 AVStream *st;
424 uint8_t *buf;
425 uint32_t chunk_id;
426 uint64_t data_size;
427 4 uint32_t screenmode = 0, num, den;
428 4 unsigned transparency = 0;
429 4 unsigned masking = 0; // no mask
430 uint8_t fmt[16];
431 int fmt_size;
432
433 4 st = avformat_new_stream(s, NULL);
434
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 4 if (!st)
435 ✗ return AVERROR(ENOMEM);
436
437 4 st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
438 4 iff->is_64bit = avio_rl32(pb) == ID_FRM8;
439
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 4 avio_skip(pb, iff->is_64bit ? 8 : 4);
440 // codec_tag used by ByteRun1 decoder to distinguish progressive (PBM) and interlaced (ILBM) content
441 4 st->codecpar->codec_tag = avio_rl32(pb);
442
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 4 if (st->codecpar->codec_tag == ID_ANIM) {
443 ✗ avio_skip(pb, 12);
444 }
445 4 iff->bitmap_compression = -1;
446 4 iff->svx8_compression = -1;
447 4 iff->maud_bits = -1;
448 4 iff->maud_compression = -1;
449
450
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 41 while(!avio_feof(pb)) {
451 uint64_t orig_pos;
452 int res;
453 37 const char *metadata_tag = NULL;
454 int version, nb_comments, i;
455 37 chunk_id = avio_rl32(pb);
456
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 37 data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
457 37 orig_pos = avio_tell(pb);
458
459
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 37 if (data_size >= INT64_MAX)
460 ✗ return AVERROR_INVALIDDATA;
461
462
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 37 switch(chunk_id) {
463 1 case ID_VHDR:
464 1 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
465
466
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 1 if (data_size < 14)
467 ✗ return AVERROR_INVALIDDATA;
468 1 avio_skip(pb, 12);
469 1 st->codecpar->sample_rate = avio_rb16(pb);
470
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 1 if (data_size >= 16) {
471 1 avio_skip(pb, 1);
472 1 iff->svx8_compression = avio_r8(pb);
473 }
474 1 break;
475
476 ✗ case ID_MHDR:
477 ✗ st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
478
479 ✗ if (data_size < 32)
480 ✗ return AVERROR_INVALIDDATA;
481 ✗ avio_skip(pb, 4);
482 ✗ iff->maud_bits = avio_rb16(pb);
483 ✗ avio_skip(pb, 2);
484 ✗ num = avio_rb32(pb);
485 ✗ den = avio_rb16(pb);
486 ✗ if (!den)
487 ✗ return AVERROR_INVALIDDATA;
488 ✗ avio_skip(pb, 2);
489 ✗ st->codecpar->sample_rate = num / den;
490 ✗ st->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
491 ✗ st->codecpar->ch_layout.nb_channels = avio_rb16(pb);
492 ✗ iff->maud_compression = avio_rb16(pb);
493 ✗ if (st->codecpar->ch_layout.nb_channels == 1)
494 ✗ st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
495 ✗ else if (st->codecpar->ch_layout.nb_channels == 2)
496 ✗ st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
497 ✗ break;
498
499 4 case ID_ABIT:
500 case ID_BODY:
501 case ID_DBOD:
502 case ID_DSD:
503 case ID_DST:
504 case ID_MDAT:
505 4 iff->body_pos = avio_tell(pb);
506
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 4 if (iff->body_pos < 0 || iff->body_pos + data_size > INT64_MAX)
507 ✗ return AVERROR_INVALIDDATA;
508
509 4 iff->body_end = iff->body_pos + data_size;
510 4 iff->body_size = data_size;
511
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 4 if (chunk_id == ID_DST) {
512 1 int ret = read_dst_frame(s, NULL);
513
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 1 if (ret < 0)
514 ✗ return ret;
515 }
516 4 break;
517
518 ✗ case ID_CHAN:
519 ✗ if (data_size < 4)
520 ✗ return AVERROR_INVALIDDATA;
521 ✗ if (avio_rb32(pb) < 6) {
522 ✗ st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
523 } else {
524 ✗ st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
525 }
526 ✗ break;
527
528 1 case ID_CAMG:
529
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 1 if (data_size < 4)
530 ✗ return AVERROR_INVALIDDATA;
531 1 screenmode = avio_rb32(pb);
532 1 break;
533
534 2 case ID_CMAP:
535
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 2 if (data_size < 3 || data_size > 768 || data_size % 3) {
536 ✗ av_log(s, AV_LOG_ERROR, "Invalid CMAP chunk size %"PRIu64"\n",
537 data_size);
538 ✗ return AVERROR_INVALIDDATA;
539 }
540 2 res = ff_alloc_extradata(st->codecpar,
541 2 data_size + IFF_EXTRA_VIDEO_SIZE);
542
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 2 if (res < 0)
543 ✗ return res;
544
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 2 if (avio_read(pb, st->codecpar->extradata + IFF_EXTRA_VIDEO_SIZE, data_size) < 0) {
545 ✗ av_freep(&st->codecpar->extradata);
546 ✗ st->codecpar->extradata_size = 0;
547 ✗ return AVERROR(EIO);
548 }
549 2 break;
550
551 2 case ID_BMHD:
552 2 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
553
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 2 if (data_size <= 8)
554 ✗ return AVERROR_INVALIDDATA;
555 2 st->codecpar->width = avio_rb16(pb);
556 2 st->codecpar->height = avio_rb16(pb);
557 2 avio_skip(pb, 4); // x, y offset
558 2 st->codecpar->bits_per_coded_sample = avio_r8(pb);
559
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 2 if (data_size >= 10)
560 2 masking = avio_r8(pb);
561
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 2 if (data_size >= 11)
562 2 iff->bitmap_compression = avio_r8(pb);
563
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 2 if (data_size >= 14) {
564 2 avio_skip(pb, 1); // padding
565 2 transparency = avio_rb16(pb);
566 }
567
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 2 if (data_size >= 16) {
568 2 st->sample_aspect_ratio.num = avio_r8(pb);
569 2 st->sample_aspect_ratio.den = avio_r8(pb);
570 }
571 2 break;
572
573 ✗ case ID_ANHD:
574 ✗ break;
575
576 ✗ case ID_DPAN:
577 ✗ avio_skip(pb, 2);
578 ✗ st->duration = avio_rb16(pb);
579 ✗ break;
580
581 ✗ case ID_DPEL:
582 ✗ if (data_size < 4 || (data_size & 3))
583 ✗ return AVERROR_INVALIDDATA;
584 ✗ if ((fmt_size = avio_read(pb, fmt, sizeof(fmt))) < 0)
585 ✗ return fmt_size;
586 ✗ if (fmt_size == sizeof(deep_rgb24) && !memcmp(fmt, deep_rgb24, sizeof(deep_rgb24)))
587 ✗ st->codecpar->format = AV_PIX_FMT_RGB24;
588 ✗ else if (fmt_size == sizeof(deep_rgba) && !memcmp(fmt, deep_rgba, sizeof(deep_rgba)))
589 ✗ st->codecpar->format = AV_PIX_FMT_RGBA;
590 ✗ else if (fmt_size == sizeof(deep_bgra) && !memcmp(fmt, deep_bgra, sizeof(deep_bgra)))
591 ✗ st->codecpar->format = AV_PIX_FMT_BGRA;
592 ✗ else if (fmt_size == sizeof(deep_argb) && !memcmp(fmt, deep_argb, sizeof(deep_argb)))
593 ✗ st->codecpar->format = AV_PIX_FMT_ARGB;
594 ✗ else if (fmt_size == sizeof(deep_abgr) && !memcmp(fmt, deep_abgr, sizeof(deep_abgr)))
595 ✗ st->codecpar->format = AV_PIX_FMT_ABGR;
596 else {
597 ✗ avpriv_request_sample(s, "color format %.16s", fmt);
598 ✗ return AVERROR_PATCHWELCOME;
599 }
600 ✗ break;
601
602 ✗ case ID_DGBL:
603 ✗ st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
604 ✗ if (data_size < 8)
605 ✗ return AVERROR_INVALIDDATA;
606 ✗ st->codecpar->width = avio_rb16(pb);
607 ✗ st->codecpar->height = avio_rb16(pb);
608 ✗ iff->bitmap_compression = avio_rb16(pb);
609 ✗ st->sample_aspect_ratio.num = avio_r8(pb);
610 ✗ st->sample_aspect_ratio.den = avio_r8(pb);
611 ✗ st->codecpar->bits_per_coded_sample = 24;
612 ✗ break;
613
614 ✗ case ID_DLOC:
615 ✗ if (data_size < 4)
616 ✗ return AVERROR_INVALIDDATA;
617 ✗ st->codecpar->width = avio_rb16(pb);
618 ✗ st->codecpar->height = avio_rb16(pb);
619 ✗ break;
620
621 ✗ case ID_TVDC:
622 ✗ if (data_size < sizeof(iff->tvdc))
623 ✗ return AVERROR_INVALIDDATA;
624 ✗ res = avio_read(pb, iff->tvdc, sizeof(iff->tvdc));
625 ✗ if (res < 0)
626 ✗ return res;
627 ✗ break;
628
629 1 case ID_ANNO:
630 1 case ID_TEXT: metadata_tag = "comment"; break;
631 ✗ case ID_AUTH: metadata_tag = "artist"; break;
632 ✗ case ID_COPYRIGHT: metadata_tag = "copyright"; break;
633 1 case ID_NAME: metadata_tag = "title"; break;
634
635 /* DSD tags */
636
637 1 case MKTAG('F','V','E','R'):
638
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 1 if (data_size < 4)
639 ✗ return AVERROR_INVALIDDATA;
640 1 version = avio_rb32(pb);
641 1 av_log(s, AV_LOG_DEBUG, "DSIFF v%d.%d.%d.%d\n",version >> 24, (version >> 16) & 0xFF, (version >> 8) & 0xFF, version & 0xFF);
642 1 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
643 1 break;
644
645 ✗ case MKTAG('D','I','I','N'):
646 ✗ res = parse_dsd_diin(s, st, orig_pos + data_size);
647 ✗ if (res < 0)
648 ✗ return res;
649 ✗ break;
650
651 1 case MKTAG('P','R','O','P'):
652
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 1 if (data_size < 4)
653 ✗ return AVERROR_INVALIDDATA;
654
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 1 if (avio_rl32(pb) != MKTAG('S','N','D',' ')) {
655 ✗ avpriv_request_sample(s, "unknown property type");
656 ✗ break;
657 }
658 1 res = parse_dsd_prop(s, st, orig_pos + data_size);
659
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 1 if (res < 0)
660 ✗ return res;
661 1 break;
662
663 ✗ case MKTAG('C','O','M','T'):
664 ✗ if (data_size < 2)
665 ✗ return AVERROR_INVALIDDATA;
666 ✗ nb_comments = avio_rb16(pb);
667 ✗ for (i = 0; i < nb_comments; i++) {
668 int year, mon, day, hour, min, type, ref;
669 char tmp[24];
670 const char *tag;
671 int metadata_size;
672
673 ✗ year = avio_rb16(pb);
674 ✗ mon = avio_r8(pb);
675 ✗ day = avio_r8(pb);
676 ✗ hour = avio_r8(pb);
677 ✗ min = avio_r8(pb);
678 ✗ snprintf(tmp, sizeof(tmp), "%04d-%02d-%02d %02d:%02d", year, mon, day, hour, min);
679 ✗ av_dict_set(&st->metadata, "comment_time", tmp, 0);
680
681 ✗ type = avio_rb16(pb);
682 ✗ ref = avio_rb16(pb);
683 ✗ switch (type) {
684 ✗ case 1:
685 ✗ if (!i)
686 ✗ tag = "channel_comment";
687 else {
688 ✗ snprintf(tmp, sizeof(tmp), "channel%d_comment", ref);
689 ✗ tag = tmp;
690 }
691 ✗ break;
692 ✗ case 2:
693 ✗ tag = ref < FF_ARRAY_ELEMS(dsd_source_comment) ? dsd_source_comment[ref] : "source_comment";
694 ✗ break;
695 ✗ case 3:
696 ✗ tag = ref < FF_ARRAY_ELEMS(dsd_history_comment) ? dsd_history_comment[ref] : "file_history";
697 ✗ break;
698 ✗ default:
699 ✗ tag = "comment";
700 }
701
702 ✗ metadata_size = avio_rb32(pb);
703 ✗ if ((res = get_metadata(s, tag, metadata_size)) < 0) {
704 ✗ av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", tag);
705 ✗ return res;
706 }
707
708 ✗ if (metadata_size & 1)
709 ✗ avio_skip(pb, 1);
710 }
711 ✗ break;
712 }
713
714
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 37 if (metadata_tag) {
715
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 2 if ((res = get_metadata(s, metadata_tag, data_size)) < 0) {
716 ✗ av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
717 ✗ return res;
718 }
719 }
720 37 avio_skip(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1));
721 }
722
723
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 4 if (st->codecpar->codec_tag == ID_ANIM)
724 ✗ avio_seek(pb, 12, SEEK_SET);
725 else
726 4 avio_seek(pb, iff->body_pos, SEEK_SET);
727
728
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 4 switch(st->codecpar->codec_type) {
729 2 case AVMEDIA_TYPE_AUDIO:
730 2 avpriv_set_pts_info(st, 32, 1, st->codecpar->sample_rate);
731
732
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 2 if (st->codecpar->codec_tag == ID_16SV)
733 ✗ st->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE_PLANAR;
734
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 2 else if (st->codecpar->codec_tag == ID_MAUD) {
735 ✗ if (iff->maud_bits == 8 && !iff->maud_compression) {
736 ✗ st->codecpar->codec_id = AV_CODEC_ID_PCM_U8;
737 ✗ } else if (iff->maud_bits == 16 && !iff->maud_compression) {
738 ✗ st->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE;
739 ✗ } else if (iff->maud_bits == 8 && iff->maud_compression == 2) {
740 ✗ st->codecpar->codec_id = AV_CODEC_ID_PCM_ALAW;
741 ✗ } else if (iff->maud_bits == 8 && iff->maud_compression == 3) {
742 ✗ st->codecpar->codec_id = AV_CODEC_ID_PCM_MULAW;
743 } else {
744 ✗ avpriv_request_sample(s, "compression %d and bit depth %d", iff->maud_compression, iff->maud_bits);
745 ✗ return AVERROR_PATCHWELCOME;
746 }
747
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 2 } else if (st->codecpar->codec_tag != ID_DSD &&
748
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 2 st->codecpar->codec_tag != ID_DST) {
749
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 1 switch (iff->svx8_compression) {
750 ✗ case COMP_NONE:
751 ✗ st->codecpar->codec_id = AV_CODEC_ID_PCM_S8_PLANAR;
752 ✗ break;
753 1 case COMP_FIB:
754 1 st->codecpar->codec_id = AV_CODEC_ID_8SVX_FIB;
755 1 break;
756 ✗ case COMP_EXP:
757 ✗ st->codecpar->codec_id = AV_CODEC_ID_8SVX_EXP;
758 ✗ break;
759 ✗ default:
760 ✗ av_log(s, AV_LOG_ERROR,
761 ✗ "Unknown SVX8 compression method '%d'\n", iff->svx8_compression);
762 ✗ return -1;
763 }
764 }
765
766 2 st->codecpar->bits_per_coded_sample = av_get_bits_per_sample(st->codecpar->codec_id);
767 2 st->codecpar->bit_rate = (int64_t)st->codecpar->ch_layout.nb_channels *
768 2 st->codecpar->sample_rate *
769 2 st->codecpar->bits_per_coded_sample;
770 2 st->codecpar->block_align = st->codecpar->ch_layout.nb_channels *
771 2 st->codecpar->bits_per_coded_sample;
772
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 2 if ((st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) && st->codecpar->block_align <= 0)
773 ✗ return AVERROR_INVALIDDATA;
774 2 break;
775
776 2 case AVMEDIA_TYPE_VIDEO:
777 2 iff->bpp = st->codecpar->bits_per_coded_sample;
778
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 2 if (st->codecpar->codec_tag == ID_ANIM)
779 ✗ avpriv_set_pts_info(st, 32, 1, 60);
780
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 2 if ((screenmode & 0x800 /* Hold And Modify */) && iff->bpp <= 8) {
781 ✗ iff->ham = iff->bpp > 6 ? 6 : 4;
782 ✗ st->codecpar->bits_per_coded_sample = 24;
783 }
784
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 2 iff->flags = (screenmode & 0x80 /* Extra HalfBrite */) && iff->bpp <= 8;
785 2 iff->masking = masking;
786 2 iff->transparency = transparency;
787
788
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 2 if (!st->codecpar->extradata) {
789 ✗ int ret = ff_alloc_extradata(st->codecpar, IFF_EXTRA_VIDEO_SIZE);
790 ✗ if (ret < 0)
791 ✗ return ret;
792 }
793
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 2 av_assert0(st->codecpar->extradata_size >= IFF_EXTRA_VIDEO_SIZE);
794 2 buf = st->codecpar->extradata;
795 2 bytestream_put_be16(&buf, IFF_EXTRA_VIDEO_SIZE);
796 2 bytestream_put_byte(&buf, iff->bitmap_compression);
797 2 bytestream_put_byte(&buf, iff->bpp);
798 2 bytestream_put_byte(&buf, iff->ham);
799 2 bytestream_put_byte(&buf, iff->flags);
800 2 bytestream_put_be16(&buf, iff->transparency);
801 2 bytestream_put_byte(&buf, iff->masking);
802 2 bytestream_put_buffer(&buf, iff->tvdc, sizeof(iff->tvdc));
803 2 st->codecpar->codec_id = AV_CODEC_ID_IFF_ILBM;
804 2 break;
805 ✗ default:
806 ✗ return -1;
807 }
808
809 4 return 0;
810 }
811
812 ✗ static unsigned get_anim_duration(uint8_t *buf, int size)
813 {
814 GetByteContext gb;
815
816 ✗ bytestream2_init(&gb, buf, size);
817 ✗ bytestream2_skip(&gb, 4);
818 ✗ while (bytestream2_get_bytes_left(&gb) > 8) {
819 ✗ unsigned chunk = bytestream2_get_le32(&gb);
820 ✗ unsigned size = bytestream2_get_be32(&gb);
821
822 ✗ if (chunk == ID_ANHD) {
823 ✗ if (size < 40)
824 ✗ break;
825 ✗ bytestream2_skip(&gb, 14);
826 ✗ return bytestream2_get_be32(&gb);
827 } else {
828 ✗ bytestream2_skip(&gb, size + size & 1);
829 }
830 }
831 ✗ return 10;
832 }
833
834 21 static int iff_read_packet(AVFormatContext *s,
835 AVPacket *pkt)
836 {
837 21 IffDemuxContext *iff = s->priv_data;
838 21 AVIOContext *pb = s->pb;
839 21 AVStream *st = s->streams[0];
840 int ret;
841 21 int64_t pos = avio_tell(pb);
842
843
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 21 if (avio_feof(pb))
844 ✗ return AVERROR_EOF;
845
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 21 if (st->codecpar->codec_tag != ID_ANIM && pos >= iff->body_end)
846 8 return AVERROR_EOF;
847
848
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 13 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
849
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 11 if (st->codecpar->codec_tag == ID_DSD || st->codecpar->codec_tag == ID_MAUD) {
850 ✗ ret = av_get_packet(pb, pkt, FFMIN(iff->body_end - pos, 1024 * st->codecpar->block_align));
851
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 11 } else if (st->codecpar->codec_tag == ID_DST) {
852 10 return read_dst_frame(s, pkt);
853 } else {
854
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 1 if (iff->body_size > INT_MAX || !iff->body_size)
855 ✗ return AVERROR_INVALIDDATA;
856 1 ret = av_get_packet(pb, pkt, iff->body_size);
857 }
858
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 2 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
859
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 2 st->codecpar->codec_tag == ID_ANIM) {
860 uint64_t data_size, orig_pos;
861 uint32_t chunk_id, chunk_id2;
862
863 ✗ while (!avio_feof(pb)) {
864 ✗ if (avio_feof(pb))
865 ✗ return AVERROR_EOF;
866
867 ✗ orig_pos = avio_tell(pb);
868 ✗ chunk_id = avio_rl32(pb);
869 ✗ data_size = avio_rb32(pb);
870 ✗ chunk_id2 = avio_rl32(pb);
871
872 ✗ if (chunk_id == ID_FORM &&
873 chunk_id2 == ID_ILBM) {
874 ✗ avio_skip(pb, -4);
875 ✗ break;
876 ✗ } else if (chunk_id == ID_FORM &&
877 chunk_id2 == ID_ANIM) {
878 ✗ continue;
879 } else {
880 ✗ avio_skip(pb, data_size);
881 }
882 }
883 ✗ ret = av_get_packet(pb, pkt, data_size);
884 ✗ pkt->pos = orig_pos;
885 ✗ pkt->duration = get_anim_duration(pkt->data, pkt->size);
886 ✗ if (pos == 12)
887 ✗ pkt->flags |= AV_PKT_FLAG_KEY;
888
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 2 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
889
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 2 st->codecpar->codec_tag != ID_ANIM) {
890
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 2 if (iff->body_size > INT_MAX || !iff->body_size)
891 ✗ return AVERROR_INVALIDDATA;
892 2 ret = av_get_packet(pb, pkt, iff->body_size);
893 2 pkt->pos = pos;
894
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 2 if (pos == iff->body_pos)
895 2 pkt->flags |= AV_PKT_FLAG_KEY;
896 } else {
897 ✗ av_assert0(0);
898 }
899
900
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 3 if (ret < 0)
901 ✗ return ret;
902 3 pkt->stream_index = 0;
903 3 return ret;
904 }
905
906 const FFInputFormat ff_iff_demuxer = {
907 .p.name = "iff",
908 .p.long_name = NULL_IF_CONFIG_SMALL("IFF (Interchange File Format)"),
909 .p.flags = AVFMT_GENERIC_INDEX | AVFMT_NO_BYTE_SEEK,
910 .priv_data_size = sizeof(IffDemuxContext),
911 .read_probe = iff_probe,
912 .read_header = iff_read_header,
913 .read_packet = iff_read_packet,
914 };
915