FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/aiffdec.c
Date: 2024-04-26 14:42:52
Exec Total Coverage
Lines: 170 267 63.7%
Functions: 7 7 100.0%
Branches: 87 176 49.4%
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 "demux.h"
27 #include "internal.h"
28 #include "pcm.h"
29 #include "aiff.h"
30 #include "id3v2.h"
31 #include "mov_chan.h"
32 #include "replaygain.h"
33
34 #define AIFF 0
35 #define AIFF_C_VERSION1 0xA2805140
36
37 typedef struct AIFFInputContext {
38 int64_t data_end;
39 int block_duration;
40 } AIFFInputContext;
41
42 6 static enum AVCodecID aiff_codec_get_id(int bps)
43 {
44
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 6 if (bps <= 8)
45 ✗ return AV_CODEC_ID_PCM_S8;
46
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 6 if (bps <= 16)
47 4 return AV_CODEC_ID_PCM_S16BE;
48
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 2 if (bps <= 24)
49 2 return AV_CODEC_ID_PCM_S24BE;
50 ✗ if (bps <= 32)
51 ✗ return AV_CODEC_ID_PCM_S32BE;
52
53 /* bigger than 32 isn't allowed */
54 ✗ return AV_CODEC_ID_NONE;
55 }
56
57 /* returns the size of the found tag */
58 58 static int64_t get_tag(AVIOContext *pb, uint32_t * tag)
59 {
60 int64_t size;
61
62
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 58 if (avio_feof(pb))
63 ✗ return AVERROR(EIO);
64
65 58 *tag = avio_rl32(pb);
66 58 size = avio_rb32(pb);
67
68 58 return size;
69 }
70
71 /* Metadata string read */
72 8 static void get_meta(AVFormatContext *s, const char *key, int64_t size)
73 {
74 8 uint8_t *str = NULL;
75
76
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 8 if (size < SIZE_MAX)
77 8 str = av_malloc(size+1);
78
79
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 8 if (str) {
80 8 int res = avio_read(s->pb, str, size);
81
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 8 if (res < 0){
82 ✗ av_free(str);
83 ✗ return;
84 }
85 8 size -= res;
86 8 str[res] = 0;
87 8 av_dict_set(&s->metadata, key, str, AV_DICT_DONT_STRDUP_VAL);
88 }
89
90 8 avio_skip(s->pb, size);
91 }
92
93 /* Returns the number of sound data frames or negative on error */
94 12 static int get_aiff_header(AVFormatContext *s, int64_t size,
95 unsigned version)
96 {
97 12 AVIOContext *pb = s->pb;
98 12 AVCodecParameters *par = s->streams[0]->codecpar;
99 12 AIFFInputContext *aiff = s->priv_data;
100 int exp;
101 uint64_t val;
102 int sample_rate;
103 unsigned int num_frames;
104 int channels;
105
106
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 12 if (size & 1)
107 ✗ size++;
108 12 par->codec_type = AVMEDIA_TYPE_AUDIO;
109 12 channels = avio_rb16(pb);
110
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 12 if (par->ch_layout.nb_channels && par->ch_layout.nb_channels != channels)
111 ✗ return AVERROR_INVALIDDATA;
112 12 par->ch_layout.nb_channels = channels;
113 12 num_frames = avio_rb32(pb);
114 12 par->bits_per_coded_sample = avio_rb16(pb);
115
116 12 exp = avio_rb16(pb) - 16383 - 63;
117 12 val = avio_rb64(pb);
118
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 12 if (exp <-63 || exp >63) {
119 ✗ av_log(s, AV_LOG_ERROR, "exp %d is out of range\n", exp);
120 ✗ return AVERROR_INVALIDDATA;
121 }
122
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 12 if (exp >= 0)
123 ✗ sample_rate = val << exp;
124 else
125 12 sample_rate = (val + (1ULL<<(-exp-1))) >> -exp;
126
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 12 if (sample_rate <= 0)
127 ✗ return AVERROR_INVALIDDATA;
128
129 12 par->sample_rate = sample_rate;
130
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 12 if (size < 18)
131 ✗ return AVERROR_INVALIDDATA;
132 12 size -= 18;
133
134 /* get codec id for AIFF-C */
135
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 12 if (size < 4) {
136 6 version = AIFF;
137
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 6 } else if (version == AIFF_C_VERSION1) {
138 6 par->codec_tag = avio_rl32(pb);
139 6 par->codec_id = ff_codec_get_id(ff_codec_aiff_tags, par->codec_tag);
140
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 6 if (par->codec_id == AV_CODEC_ID_NONE)
141 ✗ avpriv_request_sample(s, "unknown or unsupported codec tag: %s",
142 ✗ av_fourcc2str(par->codec_tag));
143 6 size -= 4;
144 }
145
146
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 12 if (version != AIFF_C_VERSION1 || par->codec_id == AV_CODEC_ID_PCM_S16BE) {
147 6 par->codec_id = aiff_codec_get_id(par->bits_per_coded_sample);
148 6 par->bits_per_coded_sample = av_get_bits_per_sample(par->codec_id);
149 6 aiff->block_duration = 1;
150 } else {
151
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 6 switch (par->codec_id) {
152 2 case AV_CODEC_ID_PCM_F32BE:
153 case AV_CODEC_ID_PCM_F64BE:
154 case AV_CODEC_ID_PCM_S16LE:
155 case AV_CODEC_ID_PCM_ALAW:
156 case AV_CODEC_ID_PCM_MULAW:
157 2 aiff->block_duration = 1;
158 2 break;
159 4 case AV_CODEC_ID_ADPCM_IMA_QT:
160 4 par->block_align = 34 * channels;
161 4 break;
162 ✗ case AV_CODEC_ID_MACE3:
163 ✗ par->block_align = 2 * channels;
164 ✗ break;
165 ✗ case AV_CODEC_ID_ADPCM_G726LE:
166 ✗ par->bits_per_coded_sample = 5;
167 ✗ case AV_CODEC_ID_ADPCM_IMA_WS:
168 case AV_CODEC_ID_ADPCM_G722:
169 case AV_CODEC_ID_MACE6:
170 case AV_CODEC_ID_CBD2_DPCM:
171 case AV_CODEC_ID_SDX2_DPCM:
172 ✗ par->block_align = 1 * channels;
173 ✗ break;
174 ✗ case AV_CODEC_ID_GSM:
175 ✗ par->block_align = 33;
176 ✗ break;
177 ✗ default:
178 ✗ aiff->block_duration = 1;
179 ✗ break;
180 }
181
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 6 if (par->block_align > 0)
182 4 aiff->block_duration = av_get_audio_frame_duration2(par,
183 par->block_align);
184 }
185
186 /* Block align needs to be computed in all cases, as the definition
187 * is specific to applications -> here we use the WAVE format definition */
188
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 12 if (!par->block_align)
189 8 par->block_align = (av_get_bits_per_sample(par->codec_id) * channels) >> 3;
190
191
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 12 if (aiff->block_duration) {
192 12 par->bit_rate = av_rescale(par->sample_rate, par->block_align * 8LL,
193 12 aiff->block_duration);
194
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 12 if (par->bit_rate < 0)
195 ✗ par->bit_rate = 0;
196 }
197
198 /* Chunk is over */
199
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 12 if (size)
200 6 avio_skip(pb, size);
201
202 12 return num_frames;
203 }
204
205 7128 static int aiff_probe(const AVProbeData *p)
206 {
207 /* check file header */
208
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 7128 if (AV_RL32(p->buf) == MKTAG('F', 'O', 'R', 'M') &&
209
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 21 AV_RB32(p->buf + 4) >= 4 &&
210
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 21 p->buf[8] == 'A' && p->buf[9] == 'I' &&
211
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 12 p->buf[10] == 'F' && (p->buf[11] == 'F' || p->buf[11] == 'C'))
212 12 return AVPROBE_SCORE_MAX;
213 else
214 7116 return 0;
215 }
216
217 /* aiff input */
218 12 static int aiff_read_header(AVFormatContext *s)
219 {
220 int ret;
221 int64_t filesize, size;
222 12 int64_t offset = 0, position;
223 uint32_t tag;
224 12 unsigned version = AIFF_C_VERSION1;
225 12 AVIOContext *pb = s->pb;
226 AVStream * st;
227 12 AIFFInputContext *aiff = s->priv_data;
228 ID3v2ExtraMeta *id3v2_extra_meta;
229
230 /* check FORM header */
231 12 filesize = get_tag(pb, &tag);
232
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 12 if (filesize < 4 || tag != MKTAG('F', 'O', 'R', 'M'))
233 ✗ return AVERROR_INVALIDDATA;
234
235 /* AIFF data type */
236 12 tag = avio_rl32(pb);
237
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 12 if (tag == MKTAG('A', 'I', 'F', 'F')) /* Got an AIFF file */
238 6 version = AIFF;
239
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 6 else if (tag != MKTAG('A', 'I', 'F', 'C')) /* An AIFF-C file then */
240 ✗ return AVERROR_INVALIDDATA;
241
242 12 filesize -= 4;
243
244 12 st = avformat_new_stream(s, NULL);
245
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 12 if (!st)
246 ✗ return AVERROR(ENOMEM);
247
248
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 58 while (filesize > 0) {
249 /* parse different chunks */
250 46 size = get_tag(pb, &tag);
251
252
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 46 if (size == AVERROR_EOF && offset > 0 && st->codecpar->block_align) {
253 ✗ av_log(s, AV_LOG_WARNING, "header parser hit EOF\n");
254 ✗ goto got_sound;
255 }
256
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 46 if (size < 0)
257 ✗ return size;
258
259 46 filesize -= size + 8;
260
261
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 46 switch (tag) {
262 12 case MKTAG('C', 'O', 'M', 'M'): /* Common chunk */
263 /* Then for the complete header info */
264 12 st->nb_frames = get_aiff_header(s, size, version);
265
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 12 if (st->nb_frames < 0)
266 ✗ return st->nb_frames;
267
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 12 if (offset > 0) // COMM is after SSND
268 ✗ goto got_sound;
269 12 break;
270 6 case MKTAG('I', 'D', '3', ' '):
271 6 position = avio_tell(pb);
272 6 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, size);
273
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 6 if (id3v2_extra_meta)
274
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 12 if ((ret = ff_id3v2_parse_apic(s, id3v2_extra_meta)) < 0 ||
275 6 (ret = ff_id3v2_parse_chapters(s, id3v2_extra_meta)) < 0) {
276 ✗ ff_id3v2_free_extra_meta(&id3v2_extra_meta);
277 ✗ return ret;
278 }
279 6 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
280
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 6 if (position + size > avio_tell(pb))
281 ✗ avio_skip(pb, position + size - avio_tell(pb));
282 6 break;
283 6 case MKTAG('F', 'V', 'E', 'R'): /* Version chunk */
284 6 version = avio_rb32(pb);
285 6 break;
286 6 case MKTAG('N', 'A', 'M', 'E'): /* Sample name chunk */
287 6 get_meta(s, "title" , size);
288 6 break;
289 ✗ case MKTAG('A', 'U', 'T', 'H'): /* Author chunk */
290 ✗ get_meta(s, "author" , size);
291 ✗ break;
292 2 case MKTAG('(', 'c', ')', ' '): /* Copyright chunk */
293 2 get_meta(s, "copyright", size);
294 2 break;
295 ✗ case MKTAG('A', 'N', 'N', 'O'): /* Annotation chunk */
296 ✗ get_meta(s, "comment" , size);
297 ✗ break;
298 12 case MKTAG('S', 'S', 'N', 'D'): /* Sampled sound chunk */
299
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 12 if (size < 8)
300 ✗ return AVERROR_INVALIDDATA;
301 12 aiff->data_end = avio_tell(pb) + size;
302 12 offset = avio_rb32(pb); /* Offset of sound data */
303 12 avio_rb32(pb); /* BlockSize... don't care */
304 12 offset += avio_tell(pb); /* Compute absolute data offset */
305
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 12 if (st->codecpar->block_align && !(pb->seekable & AVIO_SEEKABLE_NORMAL)) /* Assume COMM already parsed */
306 ✗ goto got_sound;
307
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 12 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL)) {
308 ✗ av_log(s, AV_LOG_ERROR, "file is not seekable\n");
309 ✗ return -1;
310 }
311 12 avio_skip(pb, size - 8);
312 12 break;
313 ✗ case MKTAG('w', 'a', 'v', 'e'):
314 ✗ if ((uint64_t)size > (1<<30))
315 ✗ return AVERROR_INVALIDDATA;
316 ✗ if ((ret = ff_get_extradata(s, st->codecpar, pb, size)) < 0)
317 ✗ return ret;
318 ✗ if ( (st->codecpar->codec_id == AV_CODEC_ID_QDMC || st->codecpar->codec_id == AV_CODEC_ID_QDM2)
319 ✗ && size>=12*4 && !st->codecpar->block_align) {
320 ✗ st->codecpar->block_align = AV_RB32(st->codecpar->extradata+11*4);
321 ✗ aiff->block_duration = AV_RB32(st->codecpar->extradata+9*4);
322 ✗ } else if (st->codecpar->codec_id == AV_CODEC_ID_QCELP) {
323 ✗ char rate = 0;
324 ✗ if (size >= 25)
325 ✗ rate = st->codecpar->extradata[24];
326 ✗ switch (rate) {
327 ✗ case 'H': // RATE_HALF
328 ✗ st->codecpar->block_align = 17;
329 ✗ break;
330 ✗ case 'F': // RATE_FULL
331 default:
332 ✗ st->codecpar->block_align = 35;
333 }
334 ✗ aiff->block_duration = 160;
335 ✗ st->codecpar->bit_rate = (int64_t)st->codecpar->sample_rate * (st->codecpar->block_align << 3) /
336 ✗ aiff->block_duration;
337 }
338 ✗ break;
339 2 case MKTAG('C','H','A','N'):
340
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 2 if ((ret = ff_mov_read_chan(s, pb, st, size)) < 0)
341 ✗ return ret;
342 2 break;
343 ✗ case MKTAG('A','P','C','M'): /* XA ADPCM compressed sound chunk */
344 ✗ st->codecpar->codec_id = AV_CODEC_ID_ADPCM_XA;
345 ✗ aiff->data_end = avio_tell(pb) + size;
346 ✗ offset = avio_tell(pb) + 8;
347 /* This field is unknown and its data seems to be irrelevant */
348 ✗ avio_rb32(pb);
349 ✗ st->codecpar->block_align = avio_rb32(pb);
350
351 ✗ goto got_sound;
352 break;
353 ✗ case 0:
354 ✗ if (offset > 0 && st->codecpar->block_align) // COMM && SSND
355 ✗ goto got_sound;
356 default: /* Jump */
357 ✗ avio_skip(pb, size);
358 }
359
360 /* Skip required padding byte for odd-sized chunks. */
361
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 46 if (size & 1) {
362 2 filesize--;
363 2 avio_skip(pb, 1);
364 }
365 }
366
367 12 ret = ff_replaygain_export(st, s->metadata);
368
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 12 if (ret < 0)
369 ✗ return ret;
370
371 12 got_sound:
372
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 12 if (!st->codecpar->block_align && st->codecpar->codec_id == AV_CODEC_ID_QCELP) {
373 ✗ av_log(s, AV_LOG_WARNING, "qcelp without wave chunk, assuming full rate\n");
374 ✗ st->codecpar->block_align = 35;
375
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 12 } else if (st->codecpar->block_align <= 0) {
376 ✗ av_log(s, AV_LOG_ERROR, "could not find COMM tag or invalid block_align value\n");
377 ✗ return AVERROR_INVALIDDATA;
378 }
379
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 12 if (aiff->block_duration < 0)
380 ✗ return AVERROR_INVALIDDATA;
381
382 /* Now positioned, get the sound data start and end */
383 12 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
384 12 st->start_time = 0;
385 12 st->duration = st->nb_frames * aiff->block_duration;
386
387 /* Position the stream at the first block */
388 12 avio_seek(pb, offset, SEEK_SET);
389
390 12 return 0;
391 }
392
393 #define MAX_SIZE 4096
394
395 8871 static int aiff_read_packet(AVFormatContext *s,
396 AVPacket *pkt)
397 {
398 8871 AVStream *st = s->streams[0];
399 8871 AIFFInputContext *aiff = s->priv_data;
400 int64_t max_size;
401 int res, size;
402
403 /* calculate size of remaining data */
404 8871 max_size = aiff->data_end - avio_tell(s->pb);
405
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 8871 if (max_size <= 0)
406 21 return AVERROR_EOF;
407
408
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 8850 if (!st->codecpar->block_align) {
409 ✗ av_log(s, AV_LOG_ERROR, "block_align not set\n");
410 ✗ return AVERROR_INVALIDDATA;
411 }
412
413 /* Now for that packet */
414
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 8850 switch (st->codecpar->codec_id) {
415 8422 case AV_CODEC_ID_ADPCM_IMA_QT:
416 case AV_CODEC_ID_GSM:
417 case AV_CODEC_ID_QDM2:
418 case AV_CODEC_ID_QCELP:
419 8422 size = st->codecpar->block_align;
420 8422 break;
421 428 default:
422
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 428 size = st->codecpar->block_align ? (MAX_SIZE / st->codecpar->block_align) * st->codecpar->block_align : MAX_SIZE;
423
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 428 if (!size)
424 ✗ return AVERROR_INVALIDDATA;
425 }
426 8850 size = FFMIN(max_size, size);
427 8850 res = av_get_packet(s->pb, pkt, size);
428
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 8850 if (res < 0)
429 ✗ return res;
430
431
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 8850 if (size >= st->codecpar->block_align)
432 8850 pkt->flags &= ~AV_PKT_FLAG_CORRUPT;
433 /* Only one stream in an AIFF file */
434 8850 pkt->stream_index = 0;
435 8850 pkt->duration = (res / st->codecpar->block_align) * (int64_t) aiff->block_duration;
436 8850 return 0;
437 }
438
439 const FFInputFormat ff_aiff_demuxer = {
440 .p.name = "aiff",
441 .p.long_name = NULL_IF_CONFIG_SMALL("Audio IFF"),
442 .p.codec_tag = ff_aiff_codec_tags_list,
443 .priv_data_size = sizeof(AIFFInputContext),
444 .read_probe = aiff_probe,
445 .read_header = aiff_read_header,
446 .read_packet = aiff_read_packet,
447 .read_seek = ff_pcm_read_seek,
448 };
449