FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/iff.c
Date: 2025-01-20 09:27:23
Exec Total Coverage
Lines: 261 609 42.9%
Functions: 7 10 70.0%
Branches: 151 450 33.6%
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 int64_t sbdy_pos;
115 int64_t resume_pos;
116 uint32_t body_size;
117 svx8_compression_type svx8_compression;
118 unsigned maud_bits;
119 unsigned maud_compression;
120 unsigned bitmap_compression; ///< delta compression method used
121 unsigned bpp; ///< bits per plane to decode (differs from bits_per_coded_sample if HAM)
122 unsigned ham; ///< 0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise)
123 unsigned flags; ///< 1 for EHB, 0 is no extra half darkening
124 unsigned transparency; ///< transparency color index in palette
125 unsigned masking; ///< masking method used
126 uint8_t tvdc[32]; ///< TVDC lookup table
127 uint32_t form_tag;
128 int audio_stream_index;
129 int video_stream_index;
130 } IffDemuxContext;
131
132 /* Metadata string read */
133 2 static int get_metadata(AVFormatContext *s,
134 const char *const tag,
135 const unsigned data_size)
136 {
137
1/2
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
 2 uint8_t *buf = ((data_size + 1) == 0) ? NULL : av_malloc(data_size + 1);
138
139
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (!buf)
140 ✗ return AVERROR(ENOMEM);
141
142
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 2 times.
 2 if (avio_read(s->pb, buf, data_size) != data_size) {
143 ✗ av_free(buf);
144 ✗ return AVERROR(EIO);
145 }
146 2 buf[data_size] = 0;
147 2 av_dict_set(&s->metadata, tag, buf, AV_DICT_DONT_STRDUP_VAL);
148 2 return 0;
149 }
150
151 7203 static int iff_probe(const AVProbeData *p)
152 {
153 7203 const uint8_t *d = p->buf;
154
155
2/2
✓ Branch 0 taken 21 times.
✓ Branch 1 taken 7182 times.
 7203 if ( (AV_RL32(d) == ID_FORM &&
156
2/2
✓ Branch 0 taken 20 times.
✓ Branch 1 taken 1 times.
 21 (AV_RL32(d+8) == ID_8SVX ||
157
1/2
✓ Branch 0 taken 20 times.
✗ Branch 1 not taken.
 20 AV_RL32(d+8) == ID_16SV ||
158
1/2
✓ Branch 0 taken 20 times.
✗ Branch 1 not taken.
 20 AV_RL32(d+8) == ID_MAUD ||
159
2/2
✓ Branch 0 taken 19 times.
✓ Branch 1 taken 1 times.
 20 AV_RL32(d+8) == ID_PBM ||
160
1/2
✓ Branch 0 taken 19 times.
✗ Branch 1 not taken.
 19 AV_RL32(d+8) == ID_ACBM ||
161
1/2
✓ Branch 0 taken 19 times.
✗ Branch 1 not taken.
 19 AV_RL32(d+8) == ID_DEEP ||
162
2/2
✓ Branch 0 taken 18 times.
✓ Branch 1 taken 1 times.
 19 AV_RL32(d+8) == ID_ILBM ||
163
1/2
✓ Branch 0 taken 18 times.
✗ Branch 1 not taken.
 18 AV_RL32(d+8) == ID_RGB8 ||
164
1/2
✓ Branch 0 taken 18 times.
✗ Branch 1 not taken.
 18 AV_RL32(d+8) == ID_ANIM ||
165
1/2
✓ Branch 0 taken 18 times.
✗ Branch 1 not taken.
 18 AV_RL32(d+8) == ID_RGBN)) ||
166
3/4
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 7199 times.
✓ Branch 2 taken 1 times.
✗ Branch 3 not taken.
 7200 (AV_RL32(d) == ID_FRM8 && AV_RL32(d+12) == ID_DSD))
167 4 return AVPROBE_SCORE_MAX;
168 7199 return 0;
169 }
170
171 static const AVCodecTag dsd_codec_tags[] = {
172 { AV_CODEC_ID_DSD_MSBF, ID_DSD },
173 { AV_CODEC_ID_DST, ID_DST },
174 { AV_CODEC_ID_NONE, 0 },
175 };
176
177
178 #define DSD_SLFT MKTAG('S','L','F','T')
179 #define DSD_SRGT MKTAG('S','R','G','T')
180 #define DSD_MLFT MKTAG('M','L','F','T')
181 #define DSD_MRGT MKTAG('M','R','G','T')
182 #define DSD_C MKTAG('C',' ',' ',' ')
183 #define DSD_LS MKTAG('L','S',' ',' ')
184 #define DSD_RS MKTAG('R','S',' ',' ')
185 #define DSD_LFE MKTAG('L','F','E',' ')
186
187 static const uint32_t dsd_stereo[] = { DSD_SLFT, DSD_SRGT };
188 static const uint32_t dsd_5point0[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LS, DSD_RS };
189 static const uint32_t dsd_5point1[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LFE, DSD_LS, DSD_RS };
190
191 typedef struct {
192 AVChannelLayout layout;
193 const uint32_t * dsd_layout;
194 } DSDLayoutDesc;
195
196 static const DSDLayoutDesc dsd_channel_layout[] = {
197 { AV_CHANNEL_LAYOUT_STEREO, dsd_stereo },
198 { AV_CHANNEL_LAYOUT_5POINT0, dsd_5point0 },
199 { AV_CHANNEL_LAYOUT_5POINT1, dsd_5point1 },
200 };
201
202 static const AVChannelLayout dsd_loudspeaker_config[] = {
203 AV_CHANNEL_LAYOUT_STEREO,
204 { 0 }, { 0 },
205 AV_CHANNEL_LAYOUT_5POINT0, AV_CHANNEL_LAYOUT_5POINT1,
206 };
207
208 static const char * dsd_source_comment[] = {
209 "dsd_source_comment",
210 "analogue_source_comment",
211 "pcm_source_comment",
212 };
213
214 static const char * dsd_history_comment[] = {
215 "general_remark",
216 "operator_name",
217 "creating_machine",
218 "timezone",
219 "file_revision"
220 };
221
222 ✗ static int parse_dsd_diin(AVFormatContext *s, AVStream *st, uint64_t eof)
223 {
224 ✗ AVIOContext *pb = s->pb;
225
226 ✗ while (av_sat_add64(avio_tell(pb), 12) <= eof && !avio_feof(pb)) {
227 ✗ uint32_t tag = avio_rl32(pb);
228 ✗ uint64_t size = avio_rb64(pb);
229 ✗ uint64_t orig_pos = avio_tell(pb);
230 ✗ const char * metadata_tag = NULL;
231
232 ✗ if (size >= INT64_MAX)
233 ✗ return AVERROR_INVALIDDATA;
234
235 ✗ switch(tag) {
236 ✗ case MKTAG('D','I','A','R'): metadata_tag = "artist"; break;
237 ✗ case MKTAG('D','I','T','I'): metadata_tag = "title"; break;
238 }
239
240 ✗ if (metadata_tag && size > 4) {
241 ✗ unsigned int tag_size = avio_rb32(pb);
242 ✗ int ret = get_metadata(s, metadata_tag, FFMIN(tag_size, size - 4));
243 ✗ if (ret < 0) {
244 ✗ av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
245 ✗ return ret;
246 }
247 }
248
249 ✗ avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
250 }
251
252 ✗ return 0;
253 }
254
255 1 static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
256 {
257 1 AVIOContext *pb = s->pb;
258 char abss[24];
259 int hour, min, sec, i, ret, config;
260 int dsd_layout[6];
261 ID3v2ExtraMeta *id3v2_extra_meta;
262
263
3/4
✓ Branch 2 taken 3 times.
✓ Branch 3 taken 1 times.
✓ Branch 5 taken 3 times.
✗ Branch 6 not taken.
 4 while (av_sat_add64(avio_tell(pb), 12) <= eof && !avio_feof(pb)) {
264 3 uint32_t tag = avio_rl32(pb);
265 3 uint64_t size = avio_rb64(pb);
266 3 uint64_t orig_pos = avio_tell(pb);
267
268
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3 times.
 3 if (size >= INT64_MAX)
269 ✗ return AVERROR_INVALIDDATA;
270
271
3/7
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
✓ Branch 2 taken 1 times.
✓ Branch 3 taken 1 times.
✗ Branch 4 not taken.
✗ Branch 5 not taken.
✗ Branch 6 not taken.
 3 switch(tag) {
272 ✗ case MKTAG('A','B','S','S'):
273 ✗ if (size < 8)
274 ✗ return AVERROR_INVALIDDATA;
275 ✗ hour = avio_rb16(pb);
276 ✗ min = avio_r8(pb);
277 ✗ sec = avio_r8(pb);
278 ✗ snprintf(abss, sizeof(abss), "%02dh:%02dm:%02ds:%d", hour, min, sec, avio_rb32(pb));
279 ✗ av_dict_set(&st->metadata, "absolute_start_time", abss, 0);
280 ✗ break;
281
282 1 case MKTAG('C','H','N','L'):
283
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (size < 2)
284 ✗ return AVERROR_INVALIDDATA;
285 1 st->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
286 1 st->codecpar->ch_layout.nb_channels = avio_rb16(pb);
287
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (size < 2 + st->codecpar->ch_layout.nb_channels * 4)
288 ✗ return AVERROR_INVALIDDATA;
289
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (st->codecpar->ch_layout.nb_channels > FF_ARRAY_ELEMS(dsd_layout)) {
290 ✗ avpriv_request_sample(s, "channel layout");
291 ✗ break;
292 }
293
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 1 times.
 3 for (i = 0; i < st->codecpar->ch_layout.nb_channels; i++)
294 2 dsd_layout[i] = avio_rl32(pb);
295
1/2
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
 1 for (i = 0; i < FF_ARRAY_ELEMS(dsd_channel_layout); i++) {
296 1 const DSDLayoutDesc * d = &dsd_channel_layout[i];
297
1/2
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
 1 if (d->layout.nb_channels == st->codecpar->ch_layout.nb_channels &&
298
1/2
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
 1 !memcmp(d->dsd_layout, dsd_layout, d->layout.nb_channels * sizeof(uint32_t))) {
299 1 st->codecpar->ch_layout = d->layout;
300 1 break;
301 }
302 }
303 1 break;
304
305 1 case MKTAG('C','M','P','R'):
306
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (size < 4)
307 ✗ return AVERROR_INVALIDDATA;
308 1 st->codecpar->codec_tag = tag = avio_rl32(pb);
309 1 st->codecpar->codec_id = ff_codec_get_id(dsd_codec_tags, tag);
310
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (!st->codecpar->codec_id) {
311 ✗ av_log(s, AV_LOG_ERROR, "'%s' compression is not supported\n",
312 ✗ av_fourcc2str(tag));
313 ✗ return AVERROR_PATCHWELCOME;
314 }
315 1 break;
316
317 1 case MKTAG('F','S',' ',' '):
318
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (size < 4)
319 ✗ return AVERROR_INVALIDDATA;
320 1 st->codecpar->sample_rate = avio_rb32(pb) / 8;
321 1 break;
322
323 ✗ case MKTAG('I','D','3',' '):
324 ✗ ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, size);
325 ✗ if (id3v2_extra_meta) {
326 ✗ if ((ret = ff_id3v2_parse_apic(s, id3v2_extra_meta)) < 0 ||
327 ✗ (ret = ff_id3v2_parse_chapters(s, id3v2_extra_meta)) < 0) {
328 ✗ ff_id3v2_free_extra_meta(&id3v2_extra_meta);
329 ✗ return ret;
330 }
331 ✗ ff_id3v2_free_extra_meta(&id3v2_extra_meta);
332 }
333
334 ✗ if (size < avio_tell(pb) - orig_pos) {
335 ✗ av_log(s, AV_LOG_ERROR, "id3 exceeds chunk size\n");
336 ✗ return AVERROR_INVALIDDATA;
337 }
338 ✗ break;
339
340 ✗ case MKTAG('L','S','C','O'):
341 ✗ if (size < 2)
342 ✗ return AVERROR_INVALIDDATA;
343 ✗ config = avio_rb16(pb);
344 ✗ if (config != 0xFFFF) {
345 ✗ if (config < FF_ARRAY_ELEMS(dsd_loudspeaker_config))
346 ✗ st->codecpar->ch_layout = dsd_loudspeaker_config[config];
347 ✗ if (!st->codecpar->ch_layout.nb_channels)
348 ✗ avpriv_request_sample(s, "loudspeaker configuration %d", config);
349 }
350 ✗ break;
351 }
352
353 3 avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
354 }
355
356 1 return 0;
357 }
358
359 11 static int read_dst_frame(AVFormatContext *s, AVPacket *pkt)
360 {
361 11 IffDemuxContext *iff = s->priv_data;
362 11 AVIOContext *pb = s->pb;
363 uint32_t chunk_id;
364 uint64_t chunk_pos, data_pos, data_size;
365 11 int ret = AVERROR_EOF;
366
367
1/2
✓ Branch 1 taken 12 times.
✗ Branch 2 not taken.
 12 while (!avio_feof(pb)) {
368 12 chunk_pos = avio_tell(pb);
369
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 12 times.
 12 if (chunk_pos >= iff->body_end)
370 ✗ return AVERROR_EOF;
371
372 12 chunk_id = avio_rl32(pb);
373
1/2
✓ Branch 0 taken 12 times.
✗ Branch 1 not taken.
 12 data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
374 12 data_pos = avio_tell(pb);
375
376
2/4
✓ Branch 0 taken 12 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 12 times.
 12 if (data_size < 1 || data_size >= INT64_MAX)
377 ✗ return AVERROR_INVALIDDATA;
378
379
2/3
✓ Branch 0 taken 11 times.
✓ Branch 1 taken 1 times.
✗ Branch 2 not taken.
 12 switch (chunk_id) {
380 11 case ID_DSTF:
381
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 10 times.
 11 if (!pkt) {
382
1/2
✓ Branch 1 taken 1 times.
✗ Branch 2 not taken.
 1 iff->body_pos = avio_tell(pb) - (iff->is_64bit ? 12 : 8);
383 1 iff->body_size = iff->body_end - iff->body_pos;
384 1 return 0;
385 }
386 10 ret = av_get_packet(pb, pkt, data_size);
387
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 10 times.
 10 if (ret < 0)
388 ✗ return ret;
389
2/2
✓ Branch 0 taken 4 times.
✓ Branch 1 taken 6 times.
 10 if (data_size & 1)
390 4 avio_skip(pb, 1);
391 10 pkt->flags |= AV_PKT_FLAG_KEY;
392 10 pkt->stream_index = iff->audio_stream_index;
393 10 pkt->duration = s->streams[0]->codecpar->sample_rate / 75;
394 10 pkt->pos = chunk_pos;
395
396 10 chunk_pos = avio_tell(pb);
397
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 9 times.
 10 if (chunk_pos >= iff->body_end)
398 1 return 0;
399
400 9 avio_seek(pb, chunk_pos, SEEK_SET);
401 9 return 0;
402
403 1 case ID_FRTE:
404
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (data_size < 4)
405 ✗ return AVERROR_INVALIDDATA;
406 1 s->streams[0]->duration = avio_rb32(pb) * (uint64_t)s->streams[0]->codecpar->sample_rate / 75;
407
408 1 break;
409 }
410
411 1 avio_skip(pb, data_size - (avio_tell(pb) - data_pos) + (data_size & 1));
412 }
413
414 ✗ return ret;
415 }
416
417 static const uint8_t deep_rgb24[] = {0, 0, 0, 3, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
418 static const uint8_t deep_rgba[] = {0, 0, 0, 4, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
419 static const uint8_t deep_bgra[] = {0, 0, 0, 4, 0, 3, 0, 8, 0, 2, 0, 8, 0, 1, 0, 8};
420 static const uint8_t deep_argb[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 1, 0, 8, 0, 2, 0, 8};
421 static const uint8_t deep_abgr[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 3, 0, 8, 0, 2, 0, 8};
422
423 4 static AVStream * new_stream(AVFormatContext *s, AVStream **st_ptr, int *index_ptr, enum AVMediaType codec_type)
424 {
425
1/2
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
 4 if (!*st_ptr) {
426 4 *st_ptr = avformat_new_stream(s, NULL);
427
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
 4 if (!*st_ptr)
428 ✗ return NULL;
429 4 (*st_ptr)->codecpar->codec_type = codec_type;
430 4 (*index_ptr) = (*st_ptr)->index;
431 }
432 4 return *st_ptr;
433 }
434
435 4 static int iff_read_header(AVFormatContext *s)
436 {
437 4 IffDemuxContext *iff = s->priv_data;
438 4 AVIOContext *pb = s->pb;
439 4 AVStream *sta = NULL, *stv = NULL;
440 uint8_t *buf;
441 uint32_t chunk_id;
442 uint64_t data_size;
443 4 uint32_t screenmode = 0, num, den;
444 4 unsigned transparency = 0;
445 4 unsigned masking = 0; // no mask
446 uint8_t fmt[16];
447 int fmt_size;
448
449 4 iff->audio_stream_index = -1;
450 4 iff->video_stream_index = -1;
451 4 iff->is_64bit = avio_rl32(pb) == ID_FRM8;
452
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 3 times.
 4 avio_skip(pb, iff->is_64bit ? 8 : 4);
453 4 iff->form_tag = avio_rl32(pb);
454
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
 4 if (iff->form_tag == ID_ANIM) {
455 ✗ avio_skip(pb, 12);
456 }
457 4 iff->bitmap_compression = -1;
458 4 iff->svx8_compression = -1;
459 4 iff->maud_bits = -1;
460 4 iff->maud_compression = -1;
461
462
2/2
✓ Branch 1 taken 37 times.
✓ Branch 2 taken 4 times.
 41 while(!avio_feof(pb)) {
463 uint64_t orig_pos;
464 int res;
465 37 const char *metadata_tag = NULL;
466 int version, nb_comments, i;
467 37 chunk_id = avio_rl32(pb);
468
2/2
✓ Branch 0 taken 4 times.
✓ Branch 1 taken 33 times.
 37 data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
469 37 orig_pos = avio_tell(pb);
470
471
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 37 times.
 37 if (data_size >= INT64_MAX)
472 ✗ return AVERROR_INVALIDDATA;
473
474
10/23
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 4 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 1 times.
✓ Branch 5 taken 2 times.
✓ Branch 6 taken 2 times.
✗ Branch 7 not taken.
✗ Branch 8 not taken.
✗ Branch 9 not taken.
✗ Branch 10 not taken.
✗ Branch 11 not taken.
✗ Branch 12 not taken.
✗ Branch 13 not taken.
✓ Branch 14 taken 1 times.
✗ Branch 15 not taken.
✗ Branch 16 not taken.
✓ Branch 17 taken 1 times.
✓ Branch 18 taken 1 times.
✗ Branch 19 not taken.
✓ Branch 20 taken 1 times.
✗ Branch 21 not taken.
✓ Branch 22 taken 23 times.
 37 switch(chunk_id) {
475 1 case ID_VHDR:
476
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (data_size < 14)
477 ✗ return AVERROR_INVALIDDATA;
478
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
 1 if (!new_stream(s, &sta, &iff->audio_stream_index, AVMEDIA_TYPE_AUDIO))
479 ✗ return AVERROR(ENOMEM);
480 1 avio_skip(pb, 12);
481 1 sta->codecpar->sample_rate = avio_rb16(pb);
482
1/2
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
 1 if (data_size >= 16) {
483 1 avio_skip(pb, 1);
484 1 iff->svx8_compression = avio_r8(pb);
485 }
486 1 sta->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
487 14 break;
488
489 ✗ case ID_MHDR:
490 ✗ if (data_size < 32)
491 ✗ return AVERROR_INVALIDDATA;
492 ✗ if (!new_stream(s, &sta, &iff->audio_stream_index, AVMEDIA_TYPE_AUDIO))
493 ✗ return AVERROR(ENOMEM);
494 ✗ avio_skip(pb, 4);
495 ✗ iff->maud_bits = avio_rb16(pb);
496 ✗ avio_skip(pb, 2);
497 ✗ num = avio_rb32(pb);
498 ✗ den = avio_rb16(pb);
499 ✗ if (!den)
500 ✗ return AVERROR_INVALIDDATA;
501 ✗ avio_skip(pb, 2);
502 ✗ sta->codecpar->sample_rate = num / den;
503 ✗ sta->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
504 ✗ sta->codecpar->ch_layout.nb_channels = avio_rb16(pb);
505 ✗ iff->maud_compression = avio_rb16(pb);
506 ✗ if (sta->codecpar->ch_layout.nb_channels == 1)
507 ✗ sta->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
508 ✗ else if (sta->codecpar->ch_layout.nb_channels == 2)
509 ✗ sta->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
510 ✗ break;
511
512 4 case ID_ABIT:
513 case ID_BODY:
514 case ID_DBOD:
515 case ID_DSD:
516 case ID_DST:
517 case ID_MDAT:
518 4 iff->body_pos = avio_tell(pb);
519
2/4
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 4 times.
 4 if (iff->body_pos < 0 || iff->body_pos + data_size > INT64_MAX)
520 ✗ return AVERROR_INVALIDDATA;
521
522 4 iff->body_end = iff->body_pos + data_size;
523 4 iff->body_size = data_size;
524
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 3 times.
 4 if (chunk_id == ID_DST) {
525 1 int ret = read_dst_frame(s, NULL);
526
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (ret < 0)
527 ✗ return ret;
528 }
529 4 break;
530
531 ✗ case ID_CHAN:
532 ✗ if (data_size < 4)
533 ✗ return AVERROR_INVALIDDATA;
534 ✗ if (!sta)
535 ✗ return AVERROR_INVALIDDATA;
536 ✗ if (avio_rb32(pb) < 6) {
537 ✗ sta->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
538 } else {
539 ✗ sta->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
540 }
541 ✗ break;
542
543 1 case ID_CAMG:
544
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (data_size < 4)
545 ✗ return AVERROR_INVALIDDATA;
546 1 screenmode = avio_rb32(pb);
547 1 break;
548
549 2 case ID_CMAP:
550
3/6
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 2 times.
✗ Branch 3 not taken.
✗ Branch 4 not taken.
✓ Branch 5 taken 2 times.
 2 if (data_size < 3 || data_size > 768 || data_size % 3) {
551 ✗ av_log(s, AV_LOG_ERROR, "Invalid CMAP chunk size %"PRIu64"\n",
552 data_size);
553 ✗ return AVERROR_INVALIDDATA;
554 }
555
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (!stv)
556 ✗ return AVERROR_INVALIDDATA;
557 2 res = ff_alloc_extradata(stv->codecpar,
558 2 data_size + IFF_EXTRA_VIDEO_SIZE);
559
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (res < 0)
560 ✗ return res;
561
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 2 times.
 2 if (avio_read(pb, stv->codecpar->extradata + IFF_EXTRA_VIDEO_SIZE, data_size) < 0) {
562 ✗ av_freep(&stv->codecpar->extradata);
563 ✗ stv->codecpar->extradata_size = 0;
564 ✗ return AVERROR(EIO);
565 }
566 2 break;
567
568 2 case ID_BMHD:
569
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (data_size <= 8)
570 ✗ return AVERROR_INVALIDDATA;
571
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 2 times.
 2 if (!new_stream(s, &stv, &iff->video_stream_index, AVMEDIA_TYPE_VIDEO))
572 ✗ return AVERROR(ENOMEM);
573 2 stv->codecpar->width = avio_rb16(pb);
574 2 stv->codecpar->height = avio_rb16(pb);
575 2 avio_skip(pb, 4); // x, y offset
576 2 stv->codecpar->bits_per_coded_sample = avio_r8(pb);
577
1/2
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
 2 if (data_size >= 10)
578 2 masking = avio_r8(pb);
579
1/2
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
 2 if (data_size >= 11)
580 2 iff->bitmap_compression = avio_r8(pb);
581
1/2
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
 2 if (data_size >= 14) {
582 2 avio_skip(pb, 1); // padding
583 2 transparency = avio_rb16(pb);
584 }
585
1/2
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
 2 if (data_size >= 16) {
586 2 stv->sample_aspect_ratio.num = avio_r8(pb);
587 2 stv->sample_aspect_ratio.den = avio_r8(pb);
588 }
589 2 break;
590
591 ✗ case ID_ANHD:
592 ✗ break;
593
594 ✗ case ID_DPAN:
595 ✗ if (!stv)
596 ✗ return AVERROR_INVALIDDATA;
597 ✗ avio_skip(pb, 2);
598 ✗ stv->duration = avio_rb16(pb);
599 ✗ break;
600
601 ✗ case ID_DPEL:
602 ✗ if (data_size < 4 || (data_size & 3))
603 ✗ return AVERROR_INVALIDDATA;
604 ✗ if (!stv)
605 ✗ return AVERROR_INVALIDDATA;
606 ✗ if ((fmt_size = avio_read(pb, fmt, sizeof(fmt))) < 0)
607 ✗ return fmt_size;
608 ✗ if (fmt_size == sizeof(deep_rgb24) && !memcmp(fmt, deep_rgb24, sizeof(deep_rgb24)))
609 ✗ stv->codecpar->format = AV_PIX_FMT_RGB24;
610 ✗ else if (fmt_size == sizeof(deep_rgba) && !memcmp(fmt, deep_rgba, sizeof(deep_rgba)))
611 ✗ stv->codecpar->format = AV_PIX_FMT_RGBA;
612 ✗ else if (fmt_size == sizeof(deep_bgra) && !memcmp(fmt, deep_bgra, sizeof(deep_bgra)))
613 ✗ stv->codecpar->format = AV_PIX_FMT_BGRA;
614 ✗ else if (fmt_size == sizeof(deep_argb) && !memcmp(fmt, deep_argb, sizeof(deep_argb)))
615 ✗ stv->codecpar->format = AV_PIX_FMT_ARGB;
616 ✗ else if (fmt_size == sizeof(deep_abgr) && !memcmp(fmt, deep_abgr, sizeof(deep_abgr)))
617 ✗ stv->codecpar->format = AV_PIX_FMT_ABGR;
618 else {
619 ✗ avpriv_request_sample(s, "color format %.16s", fmt);
620 ✗ return AVERROR_PATCHWELCOME;
621 }
622 ✗ break;
623
624 ✗ case ID_DGBL:
625 ✗ if (data_size < 8)
626 ✗ return AVERROR_INVALIDDATA;
627 ✗ if (!new_stream(s, &stv, &iff->video_stream_index, AVMEDIA_TYPE_VIDEO))
628 ✗ return AVERROR(ENOMEM);
629 ✗ stv->codecpar->width = avio_rb16(pb);
630 ✗ stv->codecpar->height = avio_rb16(pb);
631 ✗ iff->bitmap_compression = avio_rb16(pb);
632 ✗ stv->sample_aspect_ratio.num = avio_r8(pb);
633 ✗ stv->sample_aspect_ratio.den = avio_r8(pb);
634 ✗ stv->codecpar->bits_per_coded_sample = 24;
635 ✗ break;
636
637 ✗ case ID_DLOC:
638 ✗ if (data_size < 4)
639 ✗ return AVERROR_INVALIDDATA;
640 ✗ if (!new_stream(s, &stv, &iff->video_stream_index, AVMEDIA_TYPE_VIDEO))
641 ✗ return AVERROR(ENOMEM);
642 ✗ stv->codecpar->width = avio_rb16(pb);
643 ✗ stv->codecpar->height = avio_rb16(pb);
644 ✗ break;
645
646 ✗ case ID_TVDC:
647 ✗ if (data_size < sizeof(iff->tvdc))
648 ✗ return AVERROR_INVALIDDATA;
649 ✗ res = avio_read(pb, iff->tvdc, sizeof(iff->tvdc));
650 ✗ if (res < 0)
651 ✗ return res;
652 ✗ break;
653
654 ✗ case MKTAG('S','X','H','D'):
655 ✗ if (data_size < 22)
656 ✗ return AVERROR_INVALIDDATA;
657 ✗ if (!new_stream(s, &sta, &iff->audio_stream_index, AVMEDIA_TYPE_AUDIO))
658 ✗ return AVERROR(ENOMEM);
659 ✗ sta->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
660 ✗ switch(avio_r8(pb)) {
661 ✗ case 8:
662 ✗ sta->codecpar->codec_id = AV_CODEC_ID_PCM_S8_PLANAR;
663 ✗ break;
664 ✗ default:
665 ✗ avpriv_request_sample(s, "sound bitdepth");
666 ✗ return AVERROR_INVALIDDATA;
667 }
668 ✗ avio_skip(pb, 9);
669 ✗ if (avio_rb32(pb)) {
670 ✗ avpriv_request_sample(s, "sound compression");
671 ✗ return AVERROR_INVALIDDATA;
672 }
673 ✗ avio_skip(pb, 1);
674 ✗ sta->codecpar->ch_layout.nb_channels = avio_r8(pb);
675 ✗ if (!sta->codecpar->ch_layout.nb_channels)
676 ✗ return AVERROR_INVALIDDATA;
677 ✗ if (sta->codecpar->ch_layout.nb_channels == 1)
678 ✗ sta->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
679 ✗ else if (sta->codecpar->ch_layout.nb_channels == 2)
680 ✗ sta->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO;
681 ✗ sta->codecpar->sample_rate = avio_rb32(pb);
682 ✗ avpriv_set_pts_info(sta, 64, 1, sta->codecpar->sample_rate);
683 ✗ avio_skip(pb, 2);
684 ✗ break;
685
686 1 case ID_ANNO:
687 1 case ID_TEXT: metadata_tag = "comment"; break;
688 ✗ case ID_AUTH: metadata_tag = "artist"; break;
689 ✗ case ID_COPYRIGHT: metadata_tag = "copyright"; break;
690 1 case ID_NAME: metadata_tag = "title"; break;
691
692 /* DSD tags */
693
694 1 case MKTAG('F','V','E','R'):
695
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 1 if (iff->form_tag == ID_DSD || iff->form_tag == ID_DST) {
696
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (data_size < 4)
697 ✗ return AVERROR_INVALIDDATA;
698 1 version = avio_rb32(pb);
699 1 av_log(s, AV_LOG_DEBUG, "DSIFF v%d.%d.%d.%d\n",version >> 24, (version >> 16) & 0xFF, (version >> 8) & 0xFF, version & 0xFF);
700
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
 1 if (!new_stream(s, &sta, &iff->audio_stream_index, AVMEDIA_TYPE_AUDIO))
701 ✗ return AVERROR(ENOMEM);
702 1 sta->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
703 }
704 1 break;
705
706 ✗ case MKTAG('D','I','I','N'):
707 ✗ if (!sta)
708 ✗ return AVERROR_INVALIDDATA;
709 ✗ res = parse_dsd_diin(s, sta, orig_pos + data_size);
710 ✗ if (res < 0)
711 ✗ return res;
712 ✗ break;
713
714 1 case MKTAG('P','R','O','P'):
715
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (data_size < 4)
716 ✗ return AVERROR_INVALIDDATA;
717
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
 1 if (avio_rl32(pb) != MKTAG('S','N','D',' ')) {
718 ✗ avpriv_request_sample(s, "unknown property type");
719 ✗ break;
720 }
721
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (!sta)
722 ✗ return AVERROR_INVALIDDATA;
723 1 res = parse_dsd_prop(s, sta, orig_pos + data_size);
724
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (res < 0)
725 ✗ return res;
726 1 break;
727
728 ✗ case MKTAG('C','O','M','T'):
729 ✗ if (data_size < 2)
730 ✗ return AVERROR_INVALIDDATA;
731 ✗ if (!sta)
732 ✗ return AVERROR_INVALIDDATA;
733 ✗ nb_comments = avio_rb16(pb);
734 ✗ for (i = 0; i < nb_comments; i++) {
735 int year, mon, day, hour, min, type, ref;
736 char tmp[24];
737 const char *tag;
738 int metadata_size;
739
740 ✗ year = avio_rb16(pb);
741 ✗ mon = avio_r8(pb);
742 ✗ day = avio_r8(pb);
743 ✗ hour = avio_r8(pb);
744 ✗ min = avio_r8(pb);
745 ✗ snprintf(tmp, sizeof(tmp), "%04d-%02d-%02d %02d:%02d", year, mon, day, hour, min);
746 ✗ av_dict_set(&sta->metadata, "comment_time", tmp, 0);
747
748 ✗ type = avio_rb16(pb);
749 ✗ ref = avio_rb16(pb);
750 ✗ switch (type) {
751 ✗ case 1:
752 ✗ if (!i)
753 ✗ tag = "channel_comment";
754 else {
755 ✗ snprintf(tmp, sizeof(tmp), "channel%d_comment", ref);
756 ✗ tag = tmp;
757 }
758 ✗ break;
759 ✗ case 2:
760 ✗ tag = ref < FF_ARRAY_ELEMS(dsd_source_comment) ? dsd_source_comment[ref] : "source_comment";
761 ✗ break;
762 ✗ case 3:
763 ✗ tag = ref < FF_ARRAY_ELEMS(dsd_history_comment) ? dsd_history_comment[ref] : "file_history";
764 ✗ break;
765 ✗ default:
766 ✗ tag = "comment";
767 }
768
769 ✗ metadata_size = avio_rb32(pb);
770 ✗ if ((res = get_metadata(s, tag, metadata_size)) < 0) {
771 ✗ av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", tag);
772 ✗ return res;
773 }
774
775 ✗ if (metadata_size & 1)
776 ✗ avio_skip(pb, 1);
777 }
778 ✗ break;
779 }
780
781
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 35 times.
 37 if (metadata_tag) {
782
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 2 times.
 2 if ((res = get_metadata(s, metadata_tag, data_size)) < 0) {
783 ✗ av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
784 ✗ return res;
785 }
786 }
787 37 avio_skip(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1));
788 }
789
790
3/4
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 2 times.
✓ Branch 2 taken 2 times.
✗ Branch 3 not taken.
 4 if ((!sta && !stv) ||
791
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 4 (iff->form_tag == ID_ANIM && !stv) ||
792
4/6
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 2 times.
✓ Branch 3 taken 2 times.
✗ Branch 4 not taken.
✓ Branch 5 taken 2 times.
 4 (iff->form_tag != ID_ANIM && sta && stv))
793 ✗ return AVERROR_INVALIDDATA;
794
795
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
 4 if (iff->form_tag == ID_ANIM)
796 ✗ avio_seek(pb, 12, SEEK_SET);
797 else
798 4 avio_seek(pb, iff->body_pos, SEEK_SET);
799
800
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 2 times.
 4 if (sta) {
801 2 avpriv_set_pts_info(sta, 32, 1, sta->codecpar->sample_rate);
802
803
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 1 times.
 2 if (sta->codecpar->codec_id != AV_CODEC_ID_NONE) {
804 /* codec_id already set by PROP or SXHD chunk */
805
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 } else if (iff->form_tag == ID_16SV)
806 ✗ sta->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE_PLANAR;
807
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 else if (iff->form_tag == ID_MAUD) {
808 ✗ if (iff->maud_bits == 8 && !iff->maud_compression) {
809 ✗ sta->codecpar->codec_id = AV_CODEC_ID_PCM_U8;
810 ✗ } else if (iff->maud_bits == 16 && !iff->maud_compression) {
811 ✗ sta->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE;
812 ✗ } else if (iff->maud_bits == 8 && iff->maud_compression == 2) {
813 ✗ sta->codecpar->codec_id = AV_CODEC_ID_PCM_ALAW;
814 ✗ } else if (iff->maud_bits == 8 && iff->maud_compression == 3) {
815 ✗ sta->codecpar->codec_id = AV_CODEC_ID_PCM_MULAW;
816 } else {
817 ✗ avpriv_request_sample(s, "compression %d and bit depth %d", iff->maud_compression, iff->maud_bits);
818 ✗ return AVERROR_PATCHWELCOME;
819 }
820 } else {
821
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 1 switch (iff->svx8_compression) {
822 ✗ case COMP_NONE:
823 ✗ sta->codecpar->codec_id = AV_CODEC_ID_PCM_S8_PLANAR;
824 ✗ break;
825 1 case COMP_FIB:
826 1 sta->codecpar->codec_id = AV_CODEC_ID_8SVX_FIB;
827 1 break;
828 ✗ case COMP_EXP:
829 ✗ sta->codecpar->codec_id = AV_CODEC_ID_8SVX_EXP;
830 ✗ break;
831 ✗ default:
832 ✗ av_log(s, AV_LOG_ERROR,
833 ✗ "Unknown SVX8 compression method '%d'\n", iff->svx8_compression);
834 ✗ return -1;
835 }
836 }
837
838 2 sta->codecpar->bits_per_coded_sample = av_get_bits_per_sample(sta->codecpar->codec_id);
839 2 sta->codecpar->bit_rate = (int64_t)sta->codecpar->ch_layout.nb_channels *
840 2 sta->codecpar->sample_rate *
841 2 sta->codecpar->bits_per_coded_sample;
842 2 sta->codecpar->block_align = sta->codecpar->ch_layout.nb_channels *
843 2 sta->codecpar->bits_per_coded_sample;
844
2/6
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 2 times.
✗ Branch 4 not taken.
✗ Branch 5 not taken.
 2 if ((sta->codecpar->codec_tag == ID_DSD || iff->form_tag == ID_MAUD) && sta->codecpar->block_align <= 0)
845 ✗ return AVERROR_INVALIDDATA;
846 }
847
848
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 2 times.
 4 if (stv) {
849 2 iff->bpp = stv->codecpar->bits_per_coded_sample;
850
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (iff->form_tag == ID_ANIM)
851 ✗ avpriv_set_pts_info(stv, 32, 1, 60);
852
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 2 if ((screenmode & 0x800 /* Hold And Modify */) && iff->bpp <= 8) {
853 ✗ iff->ham = iff->bpp > 6 ? 6 : 4;
854 ✗ stv->codecpar->bits_per_coded_sample = 24;
855 }
856
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 2 iff->flags = (screenmode & 0x80 /* Extra HalfBrite */) && iff->bpp <= 8;
857 2 iff->masking = masking;
858 2 iff->transparency = transparency;
859
860
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (!stv->codecpar->extradata) {
861 ✗ int ret = ff_alloc_extradata(stv->codecpar, IFF_EXTRA_VIDEO_SIZE);
862 ✗ if (ret < 0)
863 ✗ return ret;
864 }
865
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 av_assert0(stv->codecpar->extradata_size >= IFF_EXTRA_VIDEO_SIZE);
866 2 buf = stv->codecpar->extradata;
867 2 bytestream_put_be16(&buf, IFF_EXTRA_VIDEO_SIZE);
868 2 bytestream_put_byte(&buf, iff->bitmap_compression);
869 2 bytestream_put_byte(&buf, iff->bpp);
870 2 bytestream_put_byte(&buf, iff->ham);
871 2 bytestream_put_byte(&buf, iff->flags);
872 2 bytestream_put_be16(&buf, iff->transparency);
873 2 bytestream_put_byte(&buf, iff->masking);
874 2 bytestream_put_buffer(&buf, iff->tvdc, sizeof(iff->tvdc));
875 2 stv->codecpar->codec_id = AV_CODEC_ID_IFF_ILBM;
876 2 stv->codecpar->codec_tag = iff->form_tag; // codec_tag used by ByteRun1 decoder to distinguish progressive (PBM) and interlaced (ILBM) content
877 }
878
879 4 return 0;
880 }
881
882 ✗ static unsigned get_anim_duration(uint8_t *buf, int size)
883 {
884 GetByteContext gb;
885
886 ✗ bytestream2_init(&gb, buf, size);
887 ✗ bytestream2_skip(&gb, 4);
888 ✗ while (bytestream2_get_bytes_left(&gb) > 8) {
889 ✗ unsigned chunk = bytestream2_get_le32(&gb);
890 ✗ unsigned size = bytestream2_get_be32(&gb);
891
892 ✗ if (chunk == ID_ANHD) {
893 ✗ if (size < 40)
894 ✗ break;
895 ✗ bytestream2_skip(&gb, 14);
896 ✗ return bytestream2_get_be32(&gb);
897 } else {
898 ✗ bytestream2_skip(&gb, size + size & 1);
899 }
900 }
901 ✗ return 10;
902 }
903
904 ✗ static int64_t get_sbdy_offset(uint8_t *buf, int size)
905 {
906 GetByteContext gb;
907
908 ✗ bytestream2_init(&gb, buf, size);
909 ✗ bytestream2_skip(&gb, 4);
910 ✗ while (bytestream2_get_bytes_left(&gb) > 8) {
911 ✗ unsigned chunk = bytestream2_get_le32(&gb);
912 ✗ unsigned size = bytestream2_get_be32(&gb);
913
914 ✗ if (chunk == MKTAG('S','B','D','Y'))
915 ✗ return bytestream2_tell(&gb);
916
917 ✗ bytestream2_skip(&gb, size + size & 1);
918 }
919
920 ✗ return 0;
921 }
922
923 21 static int iff_read_packet(AVFormatContext *s,
924 AVPacket *pkt)
925 {
926 21 IffDemuxContext *iff = s->priv_data;
927 21 AVIOContext *pb = s->pb;
928 int ret;
929 21 int64_t pos = avio_tell(pb);
930
931
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 21 times.
 21 if (avio_feof(pb))
932 ✗ return AVERROR_EOF;
933
3/4
✓ Branch 0 taken 21 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 8 times.
✓ Branch 3 taken 13 times.
 21 if (iff->form_tag != ID_ANIM && pos >= iff->body_end)
934 8 return AVERROR_EOF;
935
936
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 13 times.
 13 if (iff->sbdy_pos) {
937 int64_t data_size;
938 ✗ avio_seek(pb, iff->sbdy_pos, SEEK_SET);
939 ✗ data_size = iff->is_64bit ? avio_rb64(pb) : avio_rb32(pb);
940 ✗ ret = av_get_packet(pb, pkt, data_size);
941 ✗ pkt->stream_index = iff->audio_stream_index;
942 ✗ pkt->duration = data_size / s->streams[iff->audio_stream_index]->codecpar->ch_layout.nb_channels;
943 ✗ pkt->pos = INT_MAX; /* not seekable */
944
945 ✗ iff->sbdy_pos = 0;
946 ✗ avio_seek(pb, iff->resume_pos, SEEK_SET);
947 ✗ return ret;
948 }
949
950
3/4
✓ Branch 0 taken 11 times.
✓ Branch 1 taken 2 times.
✓ Branch 2 taken 11 times.
✗ Branch 3 not taken.
 13 if (iff->audio_stream_index >= 0 && iff->video_stream_index < 0) { /* audio only */
951 11 AVStream *sta = s->streams[iff->audio_stream_index];
952
2/4
✓ Branch 0 taken 11 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 11 times.
 11 if (sta->codecpar->codec_tag == ID_DSD || iff->form_tag == ID_MAUD) {
953 ✗ ret = av_get_packet(pb, pkt, FFMIN(iff->body_end - pos, 1024 * sta->codecpar->block_align));
954
2/2
✓ Branch 0 taken 10 times.
✓ Branch 1 taken 1 times.
 11 } else if (sta->codecpar->codec_tag == ID_DST) {
955 10 return read_dst_frame(s, pkt);
956 } else {
957
2/4
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 1 times.
 1 if (iff->body_size > INT_MAX || !iff->body_size)
958 ✗ return AVERROR_INVALIDDATA;
959 1 ret = av_get_packet(pb, pkt, iff->body_size);
960 }
961 1 pkt->stream_index = iff->audio_stream_index;
962
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 } else if (iff->form_tag == ID_ANIM) {
963 uint64_t data_size, orig_pos;
964 uint32_t chunk_id, chunk_id2;
965
966 ✗ while (!avio_feof(pb)) {
967 ✗ if (avio_feof(pb))
968 ✗ return AVERROR_EOF;
969
970 ✗ orig_pos = avio_tell(pb);
971 ✗ chunk_id = avio_rl32(pb);
972 ✗ data_size = avio_rb32(pb);
973 ✗ chunk_id2 = avio_rl32(pb);
974
975 ✗ if (chunk_id == ID_FORM &&
976 chunk_id2 == ID_ILBM) {
977 ✗ avio_skip(pb, -4);
978 ✗ break;
979 ✗ } else if (chunk_id == ID_FORM &&
980 chunk_id2 == ID_ANIM) {
981 ✗ continue;
982 } else {
983 ✗ avio_skip(pb, data_size);
984 }
985 }
986 ✗ ret = av_get_packet(pb, pkt, data_size);
987 ✗ pkt->stream_index = iff->video_stream_index;
988 ✗ pkt->pos = orig_pos;
989 ✗ pkt->duration = get_anim_duration(pkt->data, pkt->size);
990 ✗ if (pos == 12)
991 ✗ pkt->flags |= AV_PKT_FLAG_KEY;
992
993 ✗ if (iff->audio_stream_index >= 0) {
994 ✗ iff->sbdy_pos = get_sbdy_offset(pkt->data, pkt->size);
995 ✗ if (iff->sbdy_pos) {
996 ✗ iff->sbdy_pos += orig_pos + 4;
997 ✗ iff->resume_pos = avio_tell(pb);
998 }
999 }
1000
2/4
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 2 times.
✗ Branch 3 not taken.
 2 } else if (iff->video_stream_index >= 0 && iff->audio_stream_index < 0) { /* video only */
1001
2/4
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 2 times.
 2 if (iff->body_size > INT_MAX || !iff->body_size)
1002 ✗ return AVERROR_INVALIDDATA;
1003 2 ret = av_get_packet(pb, pkt, iff->body_size);
1004 2 pkt->stream_index = iff->video_stream_index;
1005 2 pkt->pos = pos;
1006
1/2
✓ Branch 0 taken 2 times.
✗ Branch 1 not taken.
 2 if (pos == iff->body_pos)
1007 2 pkt->flags |= AV_PKT_FLAG_KEY;
1008 } else {
1009 ✗ av_assert0(0);
1010 }
1011
1012 3 return ret;
1013 }
1014
1015 const FFInputFormat ff_iff_demuxer = {
1016 .p.name = "iff",
1017 .p.long_name = NULL_IF_CONFIG_SMALL("IFF (Interchange File Format)"),
1018 .p.flags = AVFMT_GENERIC_INDEX | AVFMT_NO_BYTE_SEEK,
1019 .priv_data_size = sizeof(IffDemuxContext),
1020 .read_probe = iff_probe,
1021 .read_header = iff_read_header,
1022 .read_packet = iff_read_packet,
1023 };
1024