FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/aiffdec.c
Date: 2026-04-21 03:24:50
Exec Total Coverage
Lines: 170 291 58.4%
Functions: 7 7 100.0%
Branches: 88 193 45.6%
Line Branch Exec Source
1 /*
2 * AIFF/AIFF-C demuxer
3 * Copyright (c) 2006 Patrick Guimond
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "libavutil/intreadwrite.h"
23 #include "libavutil/dict.h"
24 #include "libavutil/mem.h"
25 #include "avformat.h"
26 #include "avio_internal.h"
27 #include "demux.h"
28 #include "internal.h"
29 #include "pcm.h"
30 #include "aiff.h"
31 #include "id3v2.h"
32 #include "mov_chan.h"
33 #include "replaygain.h"
34
35 #define AIFF 0
36 #define AIFF_C_VERSION1 0xA2805140
37
38 typedef struct AIFFInputContext {
39 int64_t data_end;
40 int block_duration;
41 } AIFFInputContext;
42
43 6 static enum AVCodecID aiff_codec_get_id(int bps)
44 {
45
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 6 if (bps <= 8)
46 ✗ return AV_CODEC_ID_PCM_S8;
47
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 6 if (bps <= 16)
48 4 return AV_CODEC_ID_PCM_S16BE;
49
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 2 if (bps <= 24)
50 2 return AV_CODEC_ID_PCM_S24BE;
51 ✗ if (bps <= 32)
52 ✗ return AV_CODEC_ID_PCM_S32BE;
53
54 /* bigger than 32 isn't allowed */
55 ✗ return AV_CODEC_ID_NONE;
56 }
57
58 /* returns the size of the found tag */
59 58 static int64_t get_tag(AVIOContext *pb, uint32_t * tag)
60 {
61 int64_t size;
62
63
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 58 if (avio_feof(pb))
64 ✗ return AVERROR_INVALIDDATA;
65
66 58 *tag = avio_rl32(pb);
67 58 size = avio_rb32(pb);
68
69 58 return size;
70 }
71
72 /* Metadata string read */
73 8 static void get_meta(AVFormatContext *s, const char *key, int64_t size)
74 {
75 8 uint8_t *str = NULL;
76
77
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 8 if (size < SIZE_MAX)
78 8 str = av_malloc(size+1);
79
80
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 8 if (str) {
81 8 int res = avio_read(s->pb, str, size);
82
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 8 if (res < 0){
83 ✗ av_free(str);
84 ✗ return;
85 }
86 8 size -= res;
87 8 str[res] = 0;
88 8 av_dict_set(&s->metadata, key, str, AV_DICT_DONT_STRDUP_VAL);
89 }
90
91 8 avio_skip(s->pb, size);
92 }
93
94 /* Returns the number of sound data frames or negative on error */
95 12 static int get_aiff_header(AVFormatContext *s, int64_t size,
96 unsigned version)
97 {
98 12 AVIOContext *pb = s->pb;
99 12 AVCodecParameters *par = s->streams[0]->codecpar;
100 12 AIFFInputContext *aiff = s->priv_data;
101 int exp;
102 uint64_t val;
103 int sample_rate;
104 unsigned int num_frames;
105 int channels;
106
107
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 12 if (size & 1)
108 ✗ size++;
109 12 par->codec_type = AVMEDIA_TYPE_AUDIO;
110 12 channels = avio_rb16(pb);
111
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 12 if (par->ch_layout.nb_channels && par->ch_layout.nb_channels != channels)
112 ✗ return AVERROR_INVALIDDATA;
113 12 par->ch_layout.nb_channels = channels;
114 12 num_frames = avio_rb32(pb);
115 12 par->bits_per_coded_sample = avio_rb16(pb);
116
117 12 exp = avio_rb16(pb) - 16383 - 63;
118 12 val = avio_rb64(pb);
119
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 12 if (exp <-63 || exp >63) {
120 ✗ av_log(s, AV_LOG_ERROR, "exp %d is out of range\n", exp);
121 ✗ return AVERROR_INVALIDDATA;
122 }
123
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 12 if (exp >= 0)
124 ✗ sample_rate = val << exp;
125 else
126 12 sample_rate = (val + (1ULL<<(-exp-1))) >> -exp;
127
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 12 if (sample_rate <= 0)
128 ✗ return AVERROR_INVALIDDATA;
129
130 12 par->sample_rate = sample_rate;
131
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 12 if (size < 18)
132 ✗ return AVERROR_INVALIDDATA;
133 12 size -= 18;
134
135 /* get codec id for AIFF-C */
136
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 12 if (size < 4) {
137 6 version = AIFF;
138
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 6 } else if (version == AIFF_C_VERSION1) {
139 6 par->codec_tag = avio_rl32(pb);
140 6 par->codec_id = ff_codec_get_id(ff_codec_aiff_tags, par->codec_tag);
141
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 6 if (par->codec_id == AV_CODEC_ID_NONE)
142 ✗ avpriv_request_sample(s, "unknown or unsupported codec tag: %s",
143 ✗ av_fourcc2str(par->codec_tag));
144 6 size -= 4;
145 }
146
147
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 12 if (version != AIFF_C_VERSION1 || par->codec_id == AV_CODEC_ID_PCM_S16BE) {
148 6 par->codec_id = aiff_codec_get_id(par->bits_per_coded_sample);
149 6 par->bits_per_coded_sample = av_get_bits_per_sample(par->codec_id);
150 6 aiff->block_duration = 1;
151 } else {
152
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 6 switch (par->codec_id) {
153 2 case AV_CODEC_ID_PCM_F32BE:
154 case AV_CODEC_ID_PCM_F64BE:
155 case AV_CODEC_ID_PCM_S16LE:
156 case AV_CODEC_ID_PCM_ALAW:
157 case AV_CODEC_ID_PCM_MULAW:
158 2 aiff->block_duration = 1;
159 2 break;
160 4 case AV_CODEC_ID_ADPCM_IMA_QT:
161 4 par->block_align = 34 * channels;
162 4 break;
163 ✗ case AV_CODEC_ID_MACE3:
164 ✗ par->block_align = 2 * channels;
165 ✗ break;
166 ✗ case AV_CODEC_ID_ADPCM_G726LE:
167 ✗ par->bits_per_coded_sample = 5;
168 ✗ case AV_CODEC_ID_ADPCM_IMA_WS:
169 case AV_CODEC_ID_ADPCM_G722:
170 case AV_CODEC_ID_MACE6:
171 case AV_CODEC_ID_CBD2_DPCM:
172 case AV_CODEC_ID_SDX2_DPCM:
173 ✗ par->block_align = 1 * channels;
174 ✗ break;
175 ✗ case AV_CODEC_ID_GSM:
176 ✗ par->block_align = 33;
177 ✗ break;
178 ✗ case AV_CODEC_ID_G728:
179 ✗ par->block_align = 5;
180 ✗ break;
181 ✗ case AV_CODEC_ID_ADPCM_N64:
182 ✗ par->block_align = 9;
183 ✗ break;
184 ✗ default:
185 ✗ aiff->block_duration = 1;
186 ✗ break;
187 }
188
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 6 if (par->block_align > 0)
189 4 aiff->block_duration = av_get_audio_frame_duration2(par,
190 par->block_align);
191 }
192
193 /* Block align needs to be computed in all cases, as the definition
194 * is specific to applications -> here we use the WAVE format definition */
195
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 12 if (!par->block_align)
196 8 par->block_align = (av_get_bits_per_sample(par->codec_id) * channels) >> 3;
197
198
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 12 if (aiff->block_duration) {
199 12 par->bit_rate = av_rescale(par->sample_rate, par->block_align * 8LL,
200 12 aiff->block_duration);
201
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 12 if (par->bit_rate < 0)
202 ✗ par->bit_rate = 0;
203 }
204
205 /* Chunk is over */
206
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 12 if (size)
207 6 avio_skip(pb, size);
208
209 12 return num_frames;
210 }
211
212 7467 static int aiff_probe(const AVProbeData *p)
213 {
214 /* check file header */
215
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 7467 if (AV_RL32(p->buf) == MKTAG('F', 'O', 'R', 'M') &&
216
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 22 AV_RB32(p->buf + 4) >= 4 &&
217
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 22 p->buf[8] == 'A' && p->buf[9] == 'I' &&
218
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 12 p->buf[10] == 'F' && (p->buf[11] == 'F' || p->buf[11] == 'C'))
219 12 return AVPROBE_SCORE_MAX;
220 else
221 7455 return 0;
222 }
223
224 /* aiff input */
225 12 static int aiff_read_header(AVFormatContext *s)
226 {
227 int ret;
228 int64_t filesize, size;
229 12 int64_t offset = 0, position;
230 uint32_t tag;
231 12 unsigned version = AIFF_C_VERSION1;
232 12 AVIOContext *pb = s->pb;
233 AVStream * st;
234 12 AIFFInputContext *aiff = s->priv_data;
235 ID3v2ExtraMeta *id3v2_extra_meta;
236
237 /* check FORM header */
238 12 filesize = get_tag(pb, &tag);
239
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 12 if (filesize < 4 || tag != MKTAG('F', 'O', 'R', 'M'))
240 ✗ return AVERROR_INVALIDDATA;
241
242 /* AIFF data type */
243 12 tag = avio_rl32(pb);
244
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 12 if (tag == MKTAG('A', 'I', 'F', 'F')) /* Got an AIFF file */
245 6 version = AIFF;
246
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 6 else if (tag != MKTAG('A', 'I', 'F', 'C')) /* An AIFF-C file then */
247 ✗ return AVERROR_INVALIDDATA;
248
249 12 filesize -= 4;
250
251 12 st = avformat_new_stream(s, NULL);
252
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 12 if (!st)
253 ✗ return AVERROR(ENOMEM);
254
255
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 58 while (filesize > 0) {
256 /* parse different chunks */
257 46 size = get_tag(pb, &tag);
258
259
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 46 if (size == AVERROR_EOF && offset > 0 && st->codecpar->block_align) {
260 ✗ av_log(s, AV_LOG_WARNING, "header parser hit EOF\n");
261 ✗ goto got_sound;
262 }
263
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 46 if (size < 0)
264 ✗ return size;
265
266 46 filesize -= size + 8;
267
268
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 46 switch (tag) {
269 12 case MKTAG('C', 'O', 'M', 'M'): /* Common chunk */
270 /* Then for the complete header info */
271 12 st->nb_frames = get_aiff_header(s, size, version);
272
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 12 if (st->nb_frames < 0)
273 ✗ return st->nb_frames;
274
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 12 if (offset > 0) // COMM is after SSND
275 ✗ goto got_sound;
276 12 break;
277 6 case MKTAG('I', 'D', '3', ' '):
278 6 position = avio_tell(pb);
279 6 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, size);
280
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 6 if (id3v2_extra_meta)
281
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 12 if ((ret = ff_id3v2_parse_apic(s, id3v2_extra_meta)) < 0 ||
282 6 (ret = ff_id3v2_parse_chapters(s, id3v2_extra_meta)) < 0) {
283 ✗ ff_id3v2_free_extra_meta(&id3v2_extra_meta);
284 ✗ return ret;
285 }
286 6 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
287
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 6 if (position + size > avio_tell(pb))
288 ✗ avio_skip(pb, position + size - avio_tell(pb));
289 6 break;
290 6 case MKTAG('F', 'V', 'E', 'R'): /* Version chunk */
291 6 version = avio_rb32(pb);
292 6 break;
293 6 case MKTAG('N', 'A', 'M', 'E'): /* Sample name chunk */
294 6 get_meta(s, "title" , size);
295 6 break;
296 ✗ case MKTAG('A', 'U', 'T', 'H'): /* Author chunk */
297 ✗ get_meta(s, "author" , size);
298 ✗ break;
299 2 case MKTAG('(', 'c', ')', ' '): /* Copyright chunk */
300 2 get_meta(s, "copyright", size);
301 2 break;
302 ✗ case MKTAG('A', 'N', 'N', 'O'): /* Annotation chunk */
303 ✗ get_meta(s, "comment" , size);
304 ✗ break;
305 12 case MKTAG('S', 'S', 'N', 'D'): /* Sampled sound chunk */
306
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 12 if (size < 8)
307 ✗ return AVERROR_INVALIDDATA;
308 12 aiff->data_end = avio_tell(pb) + size;
309 12 offset = avio_rb32(pb); /* Offset of sound data */
310 12 avio_rb32(pb); /* BlockSize... don't care */
311 12 offset += avio_tell(pb); /* Compute absolute data offset */
312
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 12 if (st->codecpar->block_align && !(pb->seekable & AVIO_SEEKABLE_NORMAL)) /* Assume COMM already parsed */
313 ✗ goto got_sound;
314
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 12 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL)) {
315 ✗ av_log(s, AV_LOG_ERROR, "file is not seekable\n");
316 ✗ return -1;
317 }
318 12 avio_skip(pb, size - 8);
319 12 break;
320 ✗ case MKTAG('w', 'a', 'v', 'e'):
321 ✗ if ((uint64_t)size > (1<<30))
322 ✗ return AVERROR_INVALIDDATA;
323 ✗ if ((ret = ff_get_extradata(s, st->codecpar, pb, size)) < 0)
324 ✗ return ret;
325 ✗ if ( (st->codecpar->codec_id == AV_CODEC_ID_QDMC || st->codecpar->codec_id == AV_CODEC_ID_QDM2)
326 ✗ && size>=12*4 && !st->codecpar->block_align) {
327 ✗ st->codecpar->block_align = AV_RB32(st->codecpar->extradata+11*4);
328 ✗ aiff->block_duration = AV_RB32(st->codecpar->extradata+9*4);
329 ✗ } else if (st->codecpar->codec_id == AV_CODEC_ID_QCELP) {
330 ✗ char rate = 0;
331 ✗ if (size >= 25)
332 ✗ rate = st->codecpar->extradata[24];
333 ✗ switch (rate) {
334 ✗ case 'H': // RATE_HALF
335 ✗ st->codecpar->block_align = 17;
336 ✗ break;
337 ✗ case 'F': // RATE_FULL
338 default:
339 ✗ st->codecpar->block_align = 35;
340 }
341 ✗ aiff->block_duration = 160;
342 ✗ st->codecpar->bit_rate = (int64_t)st->codecpar->sample_rate * (st->codecpar->block_align << 3) /
343 ✗ aiff->block_duration;
344 }
345 ✗ break;
346 2 case MKTAG('C','H','A','N'):
347
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 2 if ((ret = ff_mov_read_chan(s, pb, st, size)) < 0)
348 ✗ return ret;
349 2 break;
350 ✗ case MKTAG('A','P','C','M'): /* XA ADPCM compressed sound chunk */
351 ✗ st->codecpar->codec_id = AV_CODEC_ID_ADPCM_XA;
352 ✗ aiff->data_end = avio_tell(pb) + size;
353 ✗ offset = avio_tell(pb) + 8;
354 /* This field is unknown and its data seems to be irrelevant */
355 ✗ avio_rb32(pb);
356 ✗ st->codecpar->block_align = avio_rb32(pb);
357
358 ✗ goto got_sound;
359 break;
360 ✗ case MKTAG('A','P','P','L'):
361 ✗ if (size > 4) {
362 ✗ uint32_t chunk = avio_rl32(pb);
363
364 ✗ size -= 4;
365 ✗ if (chunk == MKTAG('s','t','o','c')) {
366 ✗ int len = avio_r8(pb);
367
368 ✗ size--;
369 ✗ if (len == 11 && size > 11) {
370 uint8_t chunk[11];
371
372 ✗ ret = ffio_read_size(pb, chunk, 11);
373 ✗ if (ret < 0)
374 ✗ return ret;
375 ✗ size -= ret;
376 ✗ if (!memcmp(chunk, "VADPCMCODES", sizeof(chunk))) {
377 ✗ if ((ret = ff_get_extradata(s, st->codecpar, pb, size)) < 0)
378 ✗ return ret;
379 ✗ size -= ret;
380 }
381 }
382 }
383 }
384 ✗ avio_skip(pb, size);
385 ✗ break;
386 ✗ case 0:
387 ✗ if (offset > 0 && st->codecpar->block_align) // COMM && SSND
388 ✗ goto got_sound;
389 default: /* Jump */
390 ✗ avio_skip(pb, size);
391 }
392
393 /* Skip required padding byte for odd-sized chunks. */
394
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 46 if (size & 1) {
395 4 filesize--;
396 4 avio_skip(pb, 1);
397 }
398 }
399
400 12 ret = ff_replaygain_export(st, s->metadata);
401
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 12 if (ret < 0)
402 ✗ return ret;
403
404 12 got_sound:
405
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 12 if (!st->codecpar->block_align && st->codecpar->codec_id == AV_CODEC_ID_QCELP) {
406 ✗ av_log(s, AV_LOG_WARNING, "qcelp without wave chunk, assuming full rate\n");
407 ✗ st->codecpar->block_align = 35;
408
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 12 } else if (st->codecpar->block_align <= 0) {
409 ✗ av_log(s, AV_LOG_ERROR, "could not find COMM tag or invalid block_align value\n");
410 ✗ return AVERROR_INVALIDDATA;
411 }
412
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 12 if (aiff->block_duration < 0)
413 ✗ return AVERROR_INVALIDDATA;
414
415 /* Now positioned, get the sound data start and end */
416 12 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
417 12 st->start_time = 0;
418 12 st->duration = st->nb_frames * aiff->block_duration;
419
420 /* Position the stream at the first block */
421 12 avio_seek(pb, offset, SEEK_SET);
422
423 12 return 0;
424 }
425
426 #define MAX_SIZE 4096
427
428 8871 static int aiff_read_packet(AVFormatContext *s,
429 AVPacket *pkt)
430 {
431 8871 AVStream *st = s->streams[0];
432 8871 AIFFInputContext *aiff = s->priv_data;
433 int64_t max_size;
434 int res, size;
435
436 /* calculate size of remaining data */
437 8871 max_size = aiff->data_end - avio_tell(s->pb);
438
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 8871 if (max_size <= 0)
439 21 return AVERROR_EOF;
440
441
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 8850 if (!st->codecpar->block_align) {
442 ✗ av_log(s, AV_LOG_ERROR, "block_align not set\n");
443 ✗ return AVERROR_INVALIDDATA;
444 }
445
446 /* Now for that packet */
447
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 8850 switch (st->codecpar->codec_id) {
448 8422 case AV_CODEC_ID_ADPCM_IMA_QT:
449 case AV_CODEC_ID_GSM:
450 case AV_CODEC_ID_QDM2:
451 case AV_CODEC_ID_QCELP:
452 8422 size = st->codecpar->block_align;
453 8422 break;
454 428 default:
455
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 428 size = st->codecpar->block_align ? (MAX_SIZE / st->codecpar->block_align) * st->codecpar->block_align : MAX_SIZE;
456
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 428 if (!size)
457 ✗ return AVERROR_INVALIDDATA;
458 }
459 8850 size = FFMIN(max_size, size);
460 8850 res = av_get_packet(s->pb, pkt, size);
461
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 8850 if (res < 0)
462 ✗ return res;
463
464
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 8850 if (size >= st->codecpar->block_align)
465 8850 pkt->flags &= ~AV_PKT_FLAG_CORRUPT;
466 /* Only one stream in an AIFF file */
467 8850 pkt->stream_index = 0;
468 8850 pkt->duration = (res / st->codecpar->block_align) * (int64_t) aiff->block_duration;
469 8850 return 0;
470 }
471
472 const FFInputFormat ff_aiff_demuxer = {
473 .p.name = "aiff",
474 .p.long_name = NULL_IF_CONFIG_SMALL("Audio IFF"),
475 .p.codec_tag = ff_aiff_codec_tags_list,
476 .priv_data_size = sizeof(AIFFInputContext),
477 .read_probe = aiff_probe,
478 .read_header = aiff_read_header,
479 .read_packet = aiff_read_packet,
480 .read_seek = ff_pcm_read_seek,
481 };
482