1 /*
2 * Copyright (c) 2003 Fabrice Bellard
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 /**
22 * @file
23 * ID3v2 header parser
24 *
25 * Specifications available at:
26 * http://id3.org/Developer_Information
27 */
28
29 #include "config.h"
30
31 #if CONFIG_ZLIB
32 #include <zlib.h>
33 #endif
34
35 #include "libavutil/avstring.h"
36 #include "libavutil/bprint.h"
37 #include "libavutil/dict.h"
38 #include "libavutil/intreadwrite.h"
39 #include "libavcodec/png.h"
40 #include "avio_internal.h"
41 #include "demux.h"
42 #include "id3v1.h"
43 #include "id3v2.h"
44
45 const AVMetadataConv ff_id3v2_34_metadata_conv[] = {
46 { "TALB", "album" },
47 { "TCOM", "composer" },
48 { "TCON", "genre" },
49 { "TCOP", "copyright" },
50 { "TENC", "encoded_by" },
51 { "TIT2", "title" },
52 { "TLAN", "language" },
53 { "TPE1", "artist" },
54 { "TPE2", "album_artist" },
55 { "TPE3", "performer" },
56 { "TPOS", "disc" },
57 { "TPUB", "publisher" },
58 { "TRCK", "track" },
59 { "TSSE", "encoder" },
60 { "USLT", "lyrics" },
61 { 0 }
62 };
63
64 const AVMetadataConv ff_id3v2_4_metadata_conv[] = {
65 { "TCMP", "compilation" },
66 { "TDRC", "date" },
67 { "TDRL", "date" },
68 { "TDEN", "creation_time" },
69 { "TSOA", "album-sort" },
70 { "TSOP", "artist-sort" },
71 { "TSOT", "title-sort" },
72 { "TIT1", "grouping" },
73 { 0 }
74 };
75
76 static const AVMetadataConv id3v2_2_metadata_conv[] = {
77 { "TAL", "album" },
78 { "TCO", "genre" },
79 { "TCP", "compilation" },
80 { "TT2", "title" },
81 { "TEN", "encoded_by" },
82 { "TP1", "artist" },
83 { "TP2", "album_artist" },
84 { "TP3", "performer" },
85 { "TRK", "track" },
86 { 0 }
87 };
88
89 const char ff_id3v2_tags[][4] = {
90 "TALB", "TBPM", "TCOM", "TCON", "TCOP", "TDLY", "TENC", "TEXT",
91 "TFLT", "TIT1", "TIT2", "TIT3", "TKEY", "TLAN", "TLEN", "TMED",
92 "TOAL", "TOFN", "TOLY", "TOPE", "TOWN", "TPE1", "TPE2", "TPE3",
93 "TPE4", "TPOS", "TPUB", "TRCK", "TRSN", "TRSO", "TSRC", "TSSE",
94 { 0 },
95 };
96
97 const char ff_id3v2_4_tags[][4] = {
98 "TDEN", "TDOR", "TDRC", "TDRL", "TDTG", "TIPL", "TMCL", "TMOO",
99 "TPRO", "TSOA", "TSOP", "TSOT", "TSST",
100 { 0 },
101 };
102
103 const char ff_id3v2_3_tags[][4] = {
104 "TDAT", "TIME", "TORY", "TRDA", "TSIZ", "TYER",
105 { 0 },
106 };
107
108 const char * const ff_id3v2_picture_types[21] = {
109 "Other",
110 "32x32 pixels 'file icon'",
111 "Other file icon",
112 "Cover (front)",
113 "Cover (back)",
114 "Leaflet page",
115 "Media (e.g. label side of CD)",
116 "Lead artist/lead performer/soloist",
117 "Artist/performer",
118 "Conductor",
119 "Band/Orchestra",
120 "Composer",
121 "Lyricist/text writer",
122 "Recording Location",
123 "During recording",
124 "During performance",
125 "Movie/video screen capture",
126 "A bright coloured fish",
127 "Illustration",
128 "Band/artist logotype",
129 "Publisher/Studio logotype",
130 };
131
132 const CodecMime ff_id3v2_mime_tags[] = {
133 { "image/gif", AV_CODEC_ID_GIF },
134 { "image/jpeg", AV_CODEC_ID_MJPEG },
135 { "image/jpg", AV_CODEC_ID_MJPEG },
136 { "image/png", AV_CODEC_ID_PNG },
137 { "image/tiff", AV_CODEC_ID_TIFF },
138 { "image/bmp", AV_CODEC_ID_BMP },
139 { "JPG", AV_CODEC_ID_MJPEG }, /* ID3v2.2 */
140 { "PNG", AV_CODEC_ID_PNG }, /* ID3v2.2 */
141 { "", AV_CODEC_ID_NONE },
142 };
143
ff_id3v2_match(const uint8_t * buf,const char * magic)144 int ff_id3v2_match(const uint8_t *buf, const char *magic)
145 {
146 return buf[0] == magic[0] &&
147 buf[1] == magic[1] &&
148 buf[2] == magic[2] &&
149 buf[3] != 0xff &&
150 buf[4] != 0xff &&
151 (buf[6] & 0x80) == 0 &&
152 (buf[7] & 0x80) == 0 &&
153 (buf[8] & 0x80) == 0 &&
154 (buf[9] & 0x80) == 0;
155 }
156
ff_id3v2_tag_len(const uint8_t * buf)157 int ff_id3v2_tag_len(const uint8_t *buf)
158 {
159 int len = ((buf[6] & 0x7f) << 21) +
160 ((buf[7] & 0x7f) << 14) +
161 ((buf[8] & 0x7f) << 7) +
162 (buf[9] & 0x7f) +
163 ID3v2_HEADER_SIZE;
164 if (buf[5] & 0x10)
165 len += ID3v2_HEADER_SIZE;
166 return len;
167 }
168
get_size(AVIOContext * s,int len)169 static unsigned int get_size(AVIOContext *s, int len)
170 {
171 int v = 0;
172 while (len--)
173 v = (v << 7) + (avio_r8(s) & 0x7F);
174 return v;
175 }
176
size_to_syncsafe(unsigned int size)177 static unsigned int size_to_syncsafe(unsigned int size)
178 {
179 return (((size) & (0x7f << 0)) >> 0) +
180 (((size) & (0x7f << 8)) >> 1) +
181 (((size) & (0x7f << 16)) >> 2) +
182 (((size) & (0x7f << 24)) >> 3);
183 }
184
185 /* No real verification, only check that the tag consists of
186 * a combination of capital alpha-numerical characters */
is_tag(const char * buf,unsigned int len)187 static int is_tag(const char *buf, unsigned int len)
188 {
189 if (!len)
190 return 0;
191
192 while (len--)
193 if ((buf[len] < 'A' ||
194 buf[len] > 'Z') &&
195 (buf[len] < '0' ||
196 buf[len] > '9'))
197 return 0;
198
199 return 1;
200 }
201
202 /**
203 * Return 1 if the tag of length len at the given offset is valid, 0 if not, -1 on error
204 */
check_tag(AVIOContext * s,int offset,unsigned int len)205 static int check_tag(AVIOContext *s, int offset, unsigned int len)
206 {
207 char tag[4];
208
209 if (len > 4 ||
210 avio_seek(s, offset, SEEK_SET) < 0 ||
211 avio_read(s, tag, len) < (int)len)
212 return -1;
213 else if (!AV_RB32(tag) || is_tag(tag, len))
214 return 1;
215
216 return 0;
217 }
218
219 /**
220 * Free GEOB type extra metadata.
221 */
free_geobtag(void * obj)222 static void free_geobtag(void *obj)
223 {
224 ID3v2ExtraMetaGEOB *geob = obj;
225 av_freep(&geob->mime_type);
226 av_freep(&geob->file_name);
227 av_freep(&geob->description);
228 av_freep(&geob->data);
229 }
230
231 /**
232 * Decode characters to UTF-8 according to encoding type. The decoded buffer is
233 * always null terminated. Stop reading when either *maxread bytes are read from
234 * pb or U+0000 character is found.
235 *
236 * @param dst Pointer where the address of the buffer with the decoded bytes is
237 * stored. Buffer must be freed by caller.
238 * @param maxread Pointer to maximum number of characters to read from the
239 * AVIOContext. After execution the value is decremented by the number of bytes
240 * actually read.
241 * @returns 0 if no error occurred, dst is uninitialized on error
242 */
decode_str(AVFormatContext * s,AVIOContext * pb,int encoding,uint8_t ** dst,int * maxread)243 static int decode_str(AVFormatContext *s, AVIOContext *pb, int encoding,
244 uint8_t **dst, int *maxread)
245 {
246 int ret;
247 uint8_t tmp;
248 uint32_t ch = 1;
249 int left = *maxread;
250 unsigned int (*get)(AVIOContext*) = avio_rb16;
251 AVIOContext *dynbuf;
252
253 if ((ret = avio_open_dyn_buf(&dynbuf)) < 0) {
254 av_log(s, AV_LOG_ERROR, "Error opening memory stream\n");
255 return ret;
256 }
257
258 switch (encoding) {
259 case ID3v2_ENCODING_ISO8859:
260 while (left && ch) {
261 ch = avio_r8(pb);
262 PUT_UTF8(ch, tmp, avio_w8(dynbuf, tmp);)
263 left--;
264 }
265 break;
266
267 case ID3v2_ENCODING_UTF16BOM:
268 if ((left -= 2) < 0) {
269 av_log(s, AV_LOG_ERROR, "Cannot read BOM value, input too short\n");
270 ffio_free_dyn_buf(&dynbuf);
271 *dst = NULL;
272 return AVERROR_INVALIDDATA;
273 }
274
275 #ifdef OHOS_NONSTANDARD_BOM
276 char buffer[2];
277 avio_read_partial(pb, buffer, 2);
278
279 unsigned int value = (buffer[0] << 8) + buffer[1];
280 avio_seek(pb, -2, SEEK_CUR);
281
282 switch (value) {
283 case 0xfffe:
284 av_log(s, AV_LOG_INFO, "BOM 0xfffe\n");
285 avio_rb16(pb);
286 get = avio_rl16;
287 break;
288 case 0xfeff:
289 av_log(s, AV_LOG_INFO, "BOM 0xfeff\n");
290 avio_rb16(pb);
291 break;
292 default:
293 av_log(s, AV_LOG_ERROR, "Notstandard BOM value\n");
294 left += 2;
295 get = avio_rl16;
296 break;
297 }
298 #else
299 switch (avio_rb16(pb)) {
300 case 0xfffe:
301 get = avio_rl16;
302 case 0xfeff:
303 break;
304 default:
305 av_log(s, AV_LOG_ERROR, "Incorrect BOM value\n");
306 ffio_free_dyn_buf(&dynbuf);
307 *dst = NULL;
308 *maxread = left;
309 return AVERROR_INVALIDDATA;
310 }
311 #endif
312 // fall-through
313
314 case ID3v2_ENCODING_UTF16BE:
315 while ((left > 1) && ch) {
316 GET_UTF16(ch, ((left -= 2) >= 0 ? get(pb) : 0), break;)
317 PUT_UTF8(ch, tmp, avio_w8(dynbuf, tmp);)
318 }
319 if (left < 0)
320 left += 2; /* did not read last char from pb */
321 break;
322
323 case ID3v2_ENCODING_UTF8:
324 while (left && ch) {
325 ch = avio_r8(pb);
326 avio_w8(dynbuf, ch);
327 left--;
328 }
329 break;
330 default:
331 av_log(s, AV_LOG_WARNING, "Unknown encoding\n");
332 }
333
334 if (ch)
335 avio_w8(dynbuf, 0);
336
337 avio_close_dyn_buf(dynbuf, dst);
338 *maxread = left;
339
340 return 0;
341 }
342
343 #ifdef OHOS_OPT_COMPAT
344 #include <iconv.h>
iso8859_convert_utf8(char * input,size_t inputlen,char * output,size_t outputlen)345 static int iso8859_convert_utf8(char *input, size_t inputlen, char *output, size_t outputlen)
346 {
347 int resultLen = -1;
348 size_t inbuferlen = inputlen;
349 size_t outbuferlen = outputlen;
350 iconv_t cd = iconv_open("ISO-8859-1", "UTF-8");
351 if (cd != (iconv_t)-1) {
352 size_t ret = iconv(cd, &input, (size_t *)&inbuferlen, &output, (size_t *)&outbuferlen);
353 if (ret != -1) {
354 resultLen = (int)(outputlen - outbuferlen);
355 }
356 iconv_close(cd);
357 }
358 return resultLen;
359 }
360 #endif
361
362 /**
363 * Parse a text tag.
364 */
read_ttag(AVFormatContext * s,AVIOContext * pb,int taglen,AVDictionary ** metadata,const char * key)365 static void read_ttag(AVFormatContext *s, AVIOContext *pb, int taglen,
366 AVDictionary **metadata, const char *key)
367 {
368 uint8_t *dst;
369 int encoding, dict_flags = AV_DICT_DONT_OVERWRITE | AV_DICT_DONT_STRDUP_VAL;
370 unsigned genre;
371
372 if (taglen < 1)
373 return;
374
375 encoding = avio_r8(pb);
376 taglen--; /* account for encoding type byte */
377
378 if (decode_str(s, pb, encoding, &dst, &taglen) < 0) {
379 av_log(s, AV_LOG_ERROR, "Error reading frame %s, skipped\n", key);
380 return;
381 }
382
383 if (!(strcmp(key, "TCON") && strcmp(key, "TCO")) &&
384 (sscanf(dst, "(%d)", &genre) == 1 || sscanf(dst, "%d", &genre) == 1) &&
385 genre <= ID3v1_GENRE_MAX) {
386 av_freep(&dst);
387 dst = av_strdup(ff_id3v1_genre_str[genre]);
388 } else if (!(strcmp(key, "TXXX") && strcmp(key, "TXX"))) {
389 /* dst now contains the key, need to get value */
390 key = dst;
391 if (decode_str(s, pb, encoding, &dst, &taglen) < 0) {
392 av_log(s, AV_LOG_ERROR, "Error reading frame %s, skipped\n", key);
393 av_freep(&key);
394 return;
395 }
396 dict_flags |= AV_DICT_DONT_STRDUP_KEY;
397 } else if (!*dst)
398 av_freep(&dst);
399
400 #ifdef OHOS_OPT_COMPAT
401 if (dst) {
402 if (encoding == ID3v2_ENCODING_ISO8859) {
403 const int utf8len = 256;
404 char *utf8 = av_malloc(utf8len + 1);
405 if (utf8 == NULL) {
406 return;
407 }
408 utf8[utf8len] = '\0';
409 int resultLen = iso8859_convert_utf8(dst, strlen(dst), utf8, utf8len);
410 if (resultLen >= 0) {
411 char *utf8Valid = av_malloc(resultLen + 1);
412 av_strlcpy(utf8Valid, utf8, resultLen + 1);
413 av_dict_set(metadata, key, utf8Valid, dict_flags);
414 av_freep(&utf8);
415 } else {
416 av_dict_set(metadata, key, utf8, dict_flags);
417 }
418 av_freep(&dst);
419 } else {
420 av_dict_set(metadata, key, dst, dict_flags);
421 }
422 }
423 #else
424 if (dst)
425 av_dict_set(metadata, key, dst, dict_flags);
426 #endif
427 }
428
read_uslt(AVFormatContext * s,AVIOContext * pb,int taglen,AVDictionary ** metadata)429 static void read_uslt(AVFormatContext *s, AVIOContext *pb, int taglen,
430 AVDictionary **metadata)
431 {
432 uint8_t lang[4];
433 uint8_t *descriptor = NULL; // 'Content descriptor'
434 uint8_t *text;
435 char *key;
436 int encoding;
437 int ok = 0;
438
439 if (taglen < 1)
440 goto error;
441
442 encoding = avio_r8(pb);
443 taglen--;
444
445 if (avio_read(pb, lang, 3) < 3)
446 goto error;
447 lang[3] = '\0';
448 taglen -= 3;
449
450 if (decode_str(s, pb, encoding, &descriptor, &taglen) < 0 || taglen < 0)
451 goto error;
452
453 if (decode_str(s, pb, encoding, &text, &taglen) < 0 || taglen < 0)
454 goto error;
455
456 // FFmpeg does not support hierarchical metadata, so concatenate the keys.
457 key = av_asprintf("lyrics-%s%s%s", descriptor[0] ? (char *)descriptor : "",
458 descriptor[0] ? "-" : "",
459 lang);
460 if (!key) {
461 av_free(text);
462 goto error;
463 }
464
465 av_dict_set(metadata, key, text,
466 AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
467
468 ok = 1;
469 error:
470 if (!ok)
471 av_log(s, AV_LOG_ERROR, "Error reading lyrics, skipped\n");
472 av_free(descriptor);
473 }
474
475 /**
476 * Parse a comment tag.
477 */
read_comment(AVFormatContext * s,AVIOContext * pb,int taglen,AVDictionary ** metadata)478 static void read_comment(AVFormatContext *s, AVIOContext *pb, int taglen,
479 AVDictionary **metadata)
480 {
481 const char *key = "comment";
482 uint8_t *dst;
483 int encoding, dict_flags = AV_DICT_DONT_OVERWRITE | AV_DICT_DONT_STRDUP_VAL;
484 av_unused int language;
485
486 if (taglen < 4)
487 return;
488
489 encoding = avio_r8(pb);
490 language = avio_rl24(pb);
491 taglen -= 4;
492
493 if (decode_str(s, pb, encoding, &dst, &taglen) < 0) {
494 av_log(s, AV_LOG_ERROR, "Error reading comment frame, skipped\n");
495 return;
496 }
497
498 if (dst && !*dst)
499 av_freep(&dst);
500
501 if (dst) {
502 key = (const char *) dst;
503 dict_flags |= AV_DICT_DONT_STRDUP_KEY;
504 }
505
506 if (decode_str(s, pb, encoding, &dst, &taglen) < 0) {
507 av_log(s, AV_LOG_ERROR, "Error reading comment frame, skipped\n");
508 if (dict_flags & AV_DICT_DONT_STRDUP_KEY)
509 av_freep((void*)&key);
510 return;
511 }
512
513 if (dst)
514 av_dict_set(metadata, key, (const char *) dst, dict_flags);
515 }
516
517 typedef struct ExtraMetaList {
518 ID3v2ExtraMeta *head, *tail;
519 } ExtraMetaList;
520
list_append(ID3v2ExtraMeta * new_elem,ExtraMetaList * list)521 static void list_append(ID3v2ExtraMeta *new_elem, ExtraMetaList *list)
522 {
523 if (list->tail)
524 list->tail->next = new_elem;
525 else
526 list->head = new_elem;
527 list->tail = new_elem;
528 }
529
530 /**
531 * Parse GEOB tag into a ID3v2ExtraMetaGEOB struct.
532 */
read_geobtag(AVFormatContext * s,AVIOContext * pb,int taglen,const char * tag,ExtraMetaList * extra_meta,int isv34)533 static void read_geobtag(AVFormatContext *s, AVIOContext *pb, int taglen,
534 const char *tag, ExtraMetaList *extra_meta, int isv34)
535 {
536 ID3v2ExtraMetaGEOB *geob_data = NULL;
537 ID3v2ExtraMeta *new_extra = NULL;
538 char encoding;
539 unsigned int len;
540
541 if (taglen < 1)
542 return;
543
544 new_extra = av_mallocz(sizeof(ID3v2ExtraMeta));
545 if (!new_extra) {
546 av_log(s, AV_LOG_ERROR, "Failed to alloc %"SIZE_SPECIFIER" bytes\n",
547 sizeof(ID3v2ExtraMeta));
548 return;
549 }
550
551 geob_data = &new_extra->data.geob;
552
553 /* read encoding type byte */
554 encoding = avio_r8(pb);
555 taglen--;
556
557 /* read MIME type (always ISO-8859) */
558 if (decode_str(s, pb, ID3v2_ENCODING_ISO8859, &geob_data->mime_type,
559 &taglen) < 0 ||
560 taglen <= 0)
561 goto fail;
562
563 /* read file name */
564 if (decode_str(s, pb, encoding, &geob_data->file_name, &taglen) < 0 ||
565 taglen <= 0)
566 goto fail;
567
568 /* read content description */
569 if (decode_str(s, pb, encoding, &geob_data->description, &taglen) < 0 ||
570 taglen < 0)
571 goto fail;
572
573 if (taglen) {
574 /* save encapsulated binary data */
575 geob_data->data = av_malloc(taglen);
576 if (!geob_data->data) {
577 av_log(s, AV_LOG_ERROR, "Failed to alloc %d bytes\n", taglen);
578 goto fail;
579 }
580 if ((len = avio_read(pb, geob_data->data, taglen)) < taglen)
581 av_log(s, AV_LOG_WARNING,
582 "Error reading GEOB frame, data truncated.\n");
583 geob_data->datasize = len;
584 } else {
585 geob_data->data = NULL;
586 geob_data->datasize = 0;
587 }
588
589 /* add data to the list */
590 new_extra->tag = "GEOB";
591 list_append(new_extra, extra_meta);
592
593 return;
594
595 fail:
596 av_log(s, AV_LOG_ERROR, "Error reading frame %s, skipped\n", tag);
597 free_geobtag(geob_data);
598 av_free(new_extra);
599 return;
600 }
601
is_number(const char * str)602 static int is_number(const char *str)
603 {
604 while (*str >= '0' && *str <= '9')
605 str++;
606 return !*str;
607 }
608
get_date_tag(AVDictionary * m,const char * tag)609 static AVDictionaryEntry *get_date_tag(AVDictionary *m, const char *tag)
610 {
611 AVDictionaryEntry *t;
612 if ((t = av_dict_get(m, tag, NULL, AV_DICT_MATCH_CASE)) &&
613 strlen(t->value) == 4 && is_number(t->value))
614 return t;
615 return NULL;
616 }
617
merge_date(AVDictionary ** m)618 static void merge_date(AVDictionary **m)
619 {
620 AVDictionaryEntry *t;
621 char date[17] = { 0 }; // YYYY-MM-DD hh:mm
622
623 if (!(t = get_date_tag(*m, "TYER")) &&
624 !(t = get_date_tag(*m, "TYE")))
625 return;
626 av_strlcpy(date, t->value, 5);
627 av_dict_set(m, "TYER", NULL, 0);
628 av_dict_set(m, "TYE", NULL, 0);
629
630 if (!(t = get_date_tag(*m, "TDAT")) &&
631 !(t = get_date_tag(*m, "TDA")))
632 goto finish;
633 snprintf(date + 4, sizeof(date) - 4, "-%.2s-%.2s", t->value + 2, t->value);
634 av_dict_set(m, "TDAT", NULL, 0);
635 av_dict_set(m, "TDA", NULL, 0);
636
637 if (!(t = get_date_tag(*m, "TIME")) &&
638 !(t = get_date_tag(*m, "TIM")))
639 goto finish;
640 snprintf(date + 10, sizeof(date) - 10,
641 " %.2s:%.2s", t->value, t->value + 2);
642 av_dict_set(m, "TIME", NULL, 0);
643 av_dict_set(m, "TIM", NULL, 0);
644
645 finish:
646 if (date[0])
647 av_dict_set(m, "date", date, 0);
648 }
649
free_apic(void * obj)650 static void free_apic(void *obj)
651 {
652 ID3v2ExtraMetaAPIC *apic = obj;
653 av_buffer_unref(&apic->buf);
654 av_freep(&apic->description);
655 }
656
rstrip_spaces(char * buf)657 static void rstrip_spaces(char *buf)
658 {
659 size_t len = strlen(buf);
660 while (len > 0 && buf[len - 1] == ' ')
661 buf[--len] = 0;
662 }
663
read_apic(AVFormatContext * s,AVIOContext * pb,int taglen,const char * tag,ExtraMetaList * extra_meta,int isv34)664 static void read_apic(AVFormatContext *s, AVIOContext *pb, int taglen,
665 const char *tag, ExtraMetaList *extra_meta, int isv34)
666 {
667 int enc, pic_type;
668 char mimetype[64] = {0};
669 const CodecMime *mime = ff_id3v2_mime_tags;
670 enum AVCodecID id = AV_CODEC_ID_NONE;
671 ID3v2ExtraMetaAPIC *apic = NULL;
672 ID3v2ExtraMeta *new_extra = NULL;
673 int64_t end = avio_tell(pb) + taglen;
674
675 if (taglen <= 4 || (!isv34 && taglen <= 6))
676 goto fail;
677
678 new_extra = av_mallocz(sizeof(*new_extra));
679 if (!new_extra)
680 goto fail;
681
682 apic = &new_extra->data.apic;
683
684 enc = avio_r8(pb);
685 taglen--;
686
687 /* mimetype */
688 if (isv34) {
689 int ret = avio_get_str(pb, taglen, mimetype, sizeof(mimetype));
690 if (ret < 0 || ret >= taglen)
691 goto fail;
692 taglen -= ret;
693 } else {
694 if (avio_read(pb, mimetype, 3) < 0)
695 goto fail;
696
697 mimetype[3] = 0;
698 taglen -= 3;
699 }
700
701 while (mime->id != AV_CODEC_ID_NONE) {
702 if (!av_strncasecmp(mime->str, mimetype, sizeof(mimetype))) {
703 id = mime->id;
704 break;
705 }
706 mime++;
707 }
708 if (id == AV_CODEC_ID_NONE) {
709 av_log(s, AV_LOG_WARNING,
710 "Unknown attached picture mimetype: %s, skipping.\n", mimetype);
711 goto fail;
712 }
713 apic->id = id;
714
715 /* picture type */
716 pic_type = avio_r8(pb);
717 taglen--;
718 if (pic_type < 0 || pic_type >= FF_ARRAY_ELEMS(ff_id3v2_picture_types)) {
719 av_log(s, AV_LOG_WARNING, "Unknown attached picture type %d.\n",
720 pic_type);
721 pic_type = 0;
722 }
723 apic->type = ff_id3v2_picture_types[pic_type];
724
725 /* description and picture data */
726 if (decode_str(s, pb, enc, &apic->description, &taglen) < 0) {
727 av_log(s, AV_LOG_ERROR,
728 "Error decoding attached picture description.\n");
729 goto fail;
730 }
731
732 apic->buf = av_buffer_alloc(taglen + AV_INPUT_BUFFER_PADDING_SIZE);
733 if (!apic->buf || !taglen || avio_read(pb, apic->buf->data, taglen) != taglen)
734 goto fail;
735 memset(apic->buf->data + taglen, 0, AV_INPUT_BUFFER_PADDING_SIZE);
736
737 new_extra->tag = "APIC";
738
739 // The description must be unique, and some ID3v2 tag writers add spaces
740 // to write several APIC entries with the same description.
741 rstrip_spaces(apic->description);
742 list_append(new_extra, extra_meta);
743
744 return;
745
746 fail:
747 if (apic)
748 free_apic(apic);
749 av_freep(&new_extra);
750 avio_seek(pb, end, SEEK_SET);
751 }
752
free_chapter(void * obj)753 static void free_chapter(void *obj)
754 {
755 ID3v2ExtraMetaCHAP *chap = obj;
756 av_freep(&chap->element_id);
757 av_dict_free(&chap->meta);
758 }
759
read_chapter(AVFormatContext * s,AVIOContext * pb,int len,const char * ttag,ExtraMetaList * extra_meta,int isv34)760 static void read_chapter(AVFormatContext *s, AVIOContext *pb, int len,
761 const char *ttag, ExtraMetaList *extra_meta, int isv34)
762 {
763 int taglen;
764 char tag[5];
765 ID3v2ExtraMeta *new_extra = NULL;
766 ID3v2ExtraMetaCHAP *chap = NULL;
767
768 new_extra = av_mallocz(sizeof(*new_extra));
769 if (!new_extra)
770 return;
771
772 chap = &new_extra->data.chap;
773
774 if (decode_str(s, pb, 0, &chap->element_id, &len) < 0)
775 goto fail;
776
777 if (len < 16)
778 goto fail;
779
780 chap->start = avio_rb32(pb);
781 chap->end = avio_rb32(pb);
782 avio_skip(pb, 8);
783
784 len -= 16;
785 while (len > 10) {
786 if (avio_read(pb, tag, 4) < 4)
787 goto fail;
788 tag[4] = 0;
789 taglen = avio_rb32(pb);
790 avio_skip(pb, 2);
791 len -= 10;
792 if (taglen < 0 || taglen > len)
793 goto fail;
794 if (tag[0] == 'T')
795 read_ttag(s, pb, taglen, &chap->meta, tag);
796 else
797 avio_skip(pb, taglen);
798 len -= taglen;
799 }
800
801 ff_metadata_conv(&chap->meta, NULL, ff_id3v2_34_metadata_conv);
802 ff_metadata_conv(&chap->meta, NULL, ff_id3v2_4_metadata_conv);
803
804 new_extra->tag = "CHAP";
805 list_append(new_extra, extra_meta);
806
807 return;
808
809 fail:
810 free_chapter(chap);
811 av_freep(&new_extra);
812 }
813
free_priv(void * obj)814 static void free_priv(void *obj)
815 {
816 ID3v2ExtraMetaPRIV *priv = obj;
817 av_freep(&priv->owner);
818 av_freep(&priv->data);
819 }
820
read_priv(AVFormatContext * s,AVIOContext * pb,int taglen,const char * tag,ExtraMetaList * extra_meta,int isv34)821 static void read_priv(AVFormatContext *s, AVIOContext *pb, int taglen,
822 const char *tag, ExtraMetaList *extra_meta, int isv34)
823 {
824 ID3v2ExtraMeta *meta;
825 ID3v2ExtraMetaPRIV *priv;
826
827 meta = av_mallocz(sizeof(*meta));
828 if (!meta)
829 return;
830
831 priv = &meta->data.priv;
832
833 if (decode_str(s, pb, ID3v2_ENCODING_ISO8859, &priv->owner, &taglen) < 0)
834 goto fail;
835
836 priv->data = av_malloc(taglen);
837 if (!priv->data)
838 goto fail;
839
840 priv->datasize = taglen;
841
842 if (avio_read(pb, priv->data, priv->datasize) != priv->datasize)
843 goto fail;
844
845 meta->tag = "PRIV";
846 list_append(meta, extra_meta);
847
848 return;
849
850 fail:
851 free_priv(priv);
852 av_freep(&meta);
853 }
854
855 typedef struct ID3v2EMFunc {
856 const char *tag3;
857 const char *tag4;
858 void (*read)(AVFormatContext *s, AVIOContext *pb, int taglen,
859 const char *tag, ExtraMetaList *extra_meta,
860 int isv34);
861 void (*free)(void *obj);
862 } ID3v2EMFunc;
863
864 static const ID3v2EMFunc id3v2_extra_meta_funcs[] = {
865 { "GEO", "GEOB", read_geobtag, free_geobtag },
866 { "PIC", "APIC", read_apic, free_apic },
867 { "CHAP","CHAP", read_chapter, free_chapter },
868 { "PRIV","PRIV", read_priv, free_priv },
869 { NULL }
870 };
871
872 /**
873 * Get the corresponding ID3v2EMFunc struct for a tag.
874 * @param isv34 Determines if v2.2 or v2.3/4 strings are used
875 * @return A pointer to the ID3v2EMFunc struct if found, NULL otherwise.
876 */
get_extra_meta_func(const char * tag,int isv34)877 static const ID3v2EMFunc *get_extra_meta_func(const char *tag, int isv34)
878 {
879 int i = 0;
880 while (id3v2_extra_meta_funcs[i].tag3) {
881 if (tag && !memcmp(tag,
882 (isv34 ? id3v2_extra_meta_funcs[i].tag4 :
883 id3v2_extra_meta_funcs[i].tag3),
884 (isv34 ? 4 : 3)))
885 return &id3v2_extra_meta_funcs[i];
886 i++;
887 }
888 return NULL;
889 }
890
id3v2_parse(AVIOContext * pb,AVDictionary ** metadata,AVFormatContext * s,int len,uint8_t version,uint8_t flags,ExtraMetaList * extra_meta)891 static void id3v2_parse(AVIOContext *pb, AVDictionary **metadata,
892 AVFormatContext *s, int len, uint8_t version,
893 uint8_t flags, ExtraMetaList *extra_meta)
894 {
895 int isv34, unsync;
896 unsigned tlen;
897 char tag[5];
898 int64_t next, end = avio_tell(pb);
899 int taghdrlen;
900 const char *reason = NULL;
901 FFIOContext pb_local;
902 AVIOContext *pbx;
903 unsigned char *buffer = NULL;
904 int buffer_size = 0;
905 const ID3v2EMFunc *extra_func = NULL;
906 unsigned char *uncompressed_buffer = NULL;
907 av_unused int uncompressed_buffer_size = 0;
908 const char *comm_frame;
909
910 if (end > INT64_MAX - len - 10)
911 return;
912 end += len;
913
914 av_log(s, AV_LOG_DEBUG, "id3v2 ver:%d flags:%02X len:%d\n", version, flags, len);
915
916 switch (version) {
917 case 2:
918 if (flags & 0x40) {
919 reason = "compression";
920 goto error;
921 }
922 isv34 = 0;
923 taghdrlen = 6;
924 comm_frame = "COM";
925 break;
926
927 case 3:
928 case 4:
929 isv34 = 1;
930 taghdrlen = 10;
931 comm_frame = "COMM";
932 break;
933
934 default:
935 reason = "version";
936 goto error;
937 }
938
939 unsync = flags & 0x80;
940
941 if (isv34 && flags & 0x40) { /* Extended header present, just skip over it */
942 int extlen = get_size(pb, 4);
943 if (version == 4)
944 /* In v2.4 the length includes the length field we just read. */
945 extlen -= 4;
946
947 if (extlen < 0) {
948 reason = "invalid extended header length";
949 goto error;
950 }
951 avio_skip(pb, extlen);
952 len -= extlen + 4;
953 if (len < 0) {
954 reason = "extended header too long.";
955 goto error;
956 }
957 }
958
959 while (len >= taghdrlen) {
960 unsigned int tflags = 0;
961 int tunsync = 0;
962 int tcomp = 0;
963 int tencr = 0;
964 unsigned long av_unused dlen;
965
966 if (isv34) {
967 if (avio_read(pb, tag, 4) < 4)
968 break;
969 tag[4] = 0;
970 if (version == 3) {
971 tlen = avio_rb32(pb);
972 } else {
973 /* some encoders incorrectly uses v3 sizes instead of syncsafe ones
974 * so check the next tag to see which one to use */
975 tlen = avio_rb32(pb);
976 if (tlen > 0x7f) {
977 if (tlen < len) {
978 int64_t cur = avio_tell(pb);
979
980 if (ffio_ensure_seekback(pb, 2 /* tflags */ + tlen + 4 /* next tag */))
981 break;
982
983 if (check_tag(pb, cur + 2 + size_to_syncsafe(tlen), 4) == 1)
984 tlen = size_to_syncsafe(tlen);
985 else if (check_tag(pb, cur + 2 + tlen, 4) != 1)
986 break;
987 avio_seek(pb, cur, SEEK_SET);
988 } else
989 tlen = size_to_syncsafe(tlen);
990 }
991 }
992 tflags = avio_rb16(pb);
993 tunsync = tflags & ID3v2_FLAG_UNSYNCH;
994 } else {
995 if (avio_read(pb, tag, 3) < 3)
996 break;
997 tag[3] = 0;
998 tlen = avio_rb24(pb);
999 }
1000 if (tlen > (1<<28))
1001 break;
1002 len -= taghdrlen + tlen;
1003
1004 if (len < 0)
1005 break;
1006
1007 next = avio_tell(pb) + tlen;
1008
1009 if (!tlen) {
1010 if (tag[0])
1011 av_log(s, AV_LOG_DEBUG, "Invalid empty frame %s, skipping.\n",
1012 tag);
1013 continue;
1014 }
1015
1016 if (tflags & ID3v2_FLAG_DATALEN) {
1017 if (tlen < 4)
1018 break;
1019 dlen = avio_rb32(pb);
1020 tlen -= 4;
1021 } else
1022 dlen = tlen;
1023
1024 tcomp = tflags & ID3v2_FLAG_COMPRESSION;
1025 tencr = tflags & ID3v2_FLAG_ENCRYPTION;
1026
1027 /* skip encrypted tags and, if no zlib, compressed tags */
1028 if (tencr || (!CONFIG_ZLIB && tcomp)) {
1029 const char *type;
1030 if (!tcomp)
1031 type = "encrypted";
1032 else if (!tencr)
1033 type = "compressed";
1034 else
1035 type = "encrypted and compressed";
1036
1037 av_log(s, AV_LOG_WARNING, "Skipping %s ID3v2 frame %s.\n", type, tag);
1038 avio_skip(pb, tlen);
1039 /* check for text tag or supported special meta tag */
1040 } else if (tag[0] == 'T' ||
1041 !memcmp(tag, "USLT", 4) ||
1042 !strcmp(tag, comm_frame) ||
1043 (extra_meta &&
1044 (extra_func = get_extra_meta_func(tag, isv34)))) {
1045 pbx = pb;
1046
1047 if (unsync || tunsync || tcomp) {
1048 av_fast_malloc(&buffer, &buffer_size, tlen);
1049 if (!buffer) {
1050 av_log(s, AV_LOG_ERROR, "Failed to alloc %d bytes\n", tlen);
1051 goto seek;
1052 }
1053 }
1054 if (unsync || tunsync) {
1055 uint8_t *b = buffer;
1056 uint8_t *t = buffer;
1057 uint8_t *end = t + tlen;
1058
1059 if (avio_read(pb, buffer, tlen) != tlen) {
1060 av_log(s, AV_LOG_ERROR, "Failed to read tag data\n");
1061 goto seek;
1062 }
1063
1064 while (t != end) {
1065 *b++ = *t++;
1066 if (t != end && t[-1] == 0xff && !t[0])
1067 t++;
1068 }
1069
1070 ffio_init_context(&pb_local, buffer, b - buffer, 0, NULL, NULL, NULL,
1071 NULL);
1072 tlen = b - buffer;
1073 pbx = &pb_local.pub; // read from sync buffer
1074 }
1075
1076 #if CONFIG_ZLIB
1077 if (tcomp) {
1078 int err;
1079
1080 av_log(s, AV_LOG_DEBUG, "Compresssed frame %s tlen=%d dlen=%ld\n", tag, tlen, dlen);
1081
1082 if (tlen <= 0)
1083 goto seek;
1084 if (dlen / 32768 > tlen)
1085 goto seek;
1086
1087 av_fast_malloc(&uncompressed_buffer, &uncompressed_buffer_size, dlen);
1088 if (!uncompressed_buffer) {
1089 av_log(s, AV_LOG_ERROR, "Failed to alloc %ld bytes\n", dlen);
1090 goto seek;
1091 }
1092
1093 if (!(unsync || tunsync)) {
1094 err = avio_read(pb, buffer, tlen);
1095 if (err < 0) {
1096 av_log(s, AV_LOG_ERROR, "Failed to read compressed tag\n");
1097 goto seek;
1098 }
1099 tlen = err;
1100 }
1101
1102 err = uncompress(uncompressed_buffer, &dlen, buffer, tlen);
1103 if (err != Z_OK) {
1104 av_log(s, AV_LOG_ERROR, "Failed to uncompress tag: %d\n", err);
1105 goto seek;
1106 }
1107 ffio_init_context(&pb_local, uncompressed_buffer, dlen, 0, NULL, NULL, NULL, NULL);
1108 tlen = dlen;
1109 pbx = &pb_local.pub; // read from sync buffer
1110 }
1111 #endif
1112 if (tag[0] == 'T')
1113 /* parse text tag */
1114 read_ttag(s, pbx, tlen, metadata, tag);
1115 else if (!memcmp(tag, "USLT", 4))
1116 read_uslt(s, pbx, tlen, metadata);
1117 else if (!strcmp(tag, comm_frame))
1118 read_comment(s, pbx, tlen, metadata);
1119 else
1120 /* parse special meta tag */
1121 extra_func->read(s, pbx, tlen, tag, extra_meta, isv34);
1122 } else if (!tag[0]) {
1123 if (tag[1])
1124 av_log(s, AV_LOG_WARNING, "invalid frame id, assuming padding\n");
1125 avio_skip(pb, tlen);
1126 break;
1127 }
1128 /* Skip to end of tag */
1129 seek:
1130 avio_seek(pb, next, SEEK_SET);
1131 }
1132
1133 /* Footer preset, always 10 bytes, skip over it */
1134 if (version == 4 && flags & 0x10)
1135 end += 10;
1136
1137 error:
1138 if (reason)
1139 av_log(s, AV_LOG_INFO, "ID3v2.%d tag skipped, cannot handle %s\n",
1140 version, reason);
1141 avio_seek(pb, end, SEEK_SET);
1142 av_free(buffer);
1143 av_free(uncompressed_buffer);
1144 return;
1145 }
1146
id3v2_read_internal(AVIOContext * pb,AVDictionary ** metadata,AVFormatContext * s,const char * magic,ID3v2ExtraMeta ** extra_metap,int64_t max_search_size)1147 static void id3v2_read_internal(AVIOContext *pb, AVDictionary **metadata,
1148 AVFormatContext *s, const char *magic,
1149 ID3v2ExtraMeta **extra_metap, int64_t max_search_size)
1150 {
1151 int len, ret;
1152 uint8_t buf[ID3v2_HEADER_SIZE];
1153 ExtraMetaList extra_meta = { NULL };
1154 int found_header;
1155 int64_t start, off;
1156
1157 if (extra_metap)
1158 *extra_metap = NULL;
1159
1160 if (max_search_size && max_search_size < ID3v2_HEADER_SIZE)
1161 return;
1162
1163 start = avio_tell(pb);
1164 do {
1165 /* save the current offset in case there's nothing to read/skip */
1166 off = avio_tell(pb);
1167 if (max_search_size && off - start >= max_search_size - ID3v2_HEADER_SIZE) {
1168 avio_seek(pb, off, SEEK_SET);
1169 break;
1170 }
1171
1172 ret = ffio_ensure_seekback(pb, ID3v2_HEADER_SIZE);
1173 if (ret >= 0)
1174 ret = avio_read(pb, buf, ID3v2_HEADER_SIZE);
1175 if (ret != ID3v2_HEADER_SIZE) {
1176 avio_seek(pb, off, SEEK_SET);
1177 break;
1178 }
1179 found_header = ff_id3v2_match(buf, magic);
1180 if (found_header) {
1181 /* parse ID3v2 header */
1182 len = ((buf[6] & 0x7f) << 21) |
1183 ((buf[7] & 0x7f) << 14) |
1184 ((buf[8] & 0x7f) << 7) |
1185 (buf[9] & 0x7f);
1186 id3v2_parse(pb, metadata, s, len, buf[3], buf[5],
1187 extra_metap ? &extra_meta : NULL);
1188 } else {
1189 avio_seek(pb, off, SEEK_SET);
1190 }
1191 } while (found_header);
1192 ff_metadata_conv(metadata, NULL, ff_id3v2_34_metadata_conv);
1193 ff_metadata_conv(metadata, NULL, id3v2_2_metadata_conv);
1194 ff_metadata_conv(metadata, NULL, ff_id3v2_4_metadata_conv);
1195 merge_date(metadata);
1196 if (extra_metap)
1197 *extra_metap = extra_meta.head;
1198 }
1199
ff_id3v2_read_dict(AVIOContext * pb,AVDictionary ** metadata,const char * magic,ID3v2ExtraMeta ** extra_meta)1200 void ff_id3v2_read_dict(AVIOContext *pb, AVDictionary **metadata,
1201 const char *magic, ID3v2ExtraMeta **extra_meta)
1202 {
1203 id3v2_read_internal(pb, metadata, NULL, magic, extra_meta, 0);
1204 }
1205
ff_id3v2_read(AVFormatContext * s,const char * magic,ID3v2ExtraMeta ** extra_meta,unsigned int max_search_size)1206 void ff_id3v2_read(AVFormatContext *s, const char *magic,
1207 ID3v2ExtraMeta **extra_meta, unsigned int max_search_size)
1208 {
1209 id3v2_read_internal(s->pb, &s->metadata, s, magic, extra_meta, max_search_size);
1210 }
1211
ff_id3v2_free_extra_meta(ID3v2ExtraMeta ** extra_meta)1212 void ff_id3v2_free_extra_meta(ID3v2ExtraMeta **extra_meta)
1213 {
1214 ID3v2ExtraMeta *current = *extra_meta, *next;
1215 const ID3v2EMFunc *extra_func;
1216
1217 while (current) {
1218 if ((extra_func = get_extra_meta_func(current->tag, 1)))
1219 extra_func->free(¤t->data);
1220 next = current->next;
1221 av_freep(¤t);
1222 current = next;
1223 }
1224
1225 *extra_meta = NULL;
1226 }
1227
ff_id3v2_parse_apic(AVFormatContext * s,ID3v2ExtraMeta * extra_meta)1228 int ff_id3v2_parse_apic(AVFormatContext *s, ID3v2ExtraMeta *extra_meta)
1229 {
1230 ID3v2ExtraMeta *cur;
1231
1232 for (cur = extra_meta; cur; cur = cur->next) {
1233 ID3v2ExtraMetaAPIC *apic;
1234 AVStream *st;
1235 int ret;
1236
1237 if (strcmp(cur->tag, "APIC"))
1238 continue;
1239 apic = &cur->data.apic;
1240
1241 ret = ff_add_attached_pic(s, NULL, NULL, &apic->buf, 0);
1242 if (ret < 0)
1243 return ret;
1244 st = s->streams[s->nb_streams - 1];
1245 st->codecpar->codec_id = apic->id;
1246
1247 if (AV_RB64(st->attached_pic.data) == PNGSIG)
1248 st->codecpar->codec_id = AV_CODEC_ID_PNG;
1249
1250 if (apic->description[0])
1251 av_dict_set(&st->metadata, "title", apic->description, 0);
1252
1253 av_dict_set(&st->metadata, "comment", apic->type, 0);
1254 }
1255
1256 return 0;
1257 }
1258
ff_id3v2_parse_chapters(AVFormatContext * s,ID3v2ExtraMeta * cur)1259 int ff_id3v2_parse_chapters(AVFormatContext *s, ID3v2ExtraMeta *cur)
1260 {
1261 AVRational time_base = {1, 1000};
1262 int ret;
1263
1264 for (unsigned i = 0; cur; cur = cur->next) {
1265 ID3v2ExtraMetaCHAP *chap;
1266 AVChapter *chapter;
1267
1268 if (strcmp(cur->tag, "CHAP"))
1269 continue;
1270
1271 chap = &cur->data.chap;
1272 chapter = avpriv_new_chapter(s, i++, time_base, chap->start,
1273 chap->end, chap->element_id);
1274 if (!chapter)
1275 continue;
1276
1277 if ((ret = av_dict_copy(&chapter->metadata, chap->meta, 0)) < 0)
1278 return ret;
1279 }
1280
1281 return 0;
1282 }
1283
ff_id3v2_parse_priv_dict(AVDictionary ** metadata,ID3v2ExtraMeta * extra_meta)1284 int ff_id3v2_parse_priv_dict(AVDictionary **metadata, ID3v2ExtraMeta *extra_meta)
1285 {
1286 ID3v2ExtraMeta *cur;
1287 int dict_flags = AV_DICT_DONT_OVERWRITE | AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL;
1288
1289 for (cur = extra_meta; cur; cur = cur->next) {
1290 if (!strcmp(cur->tag, "PRIV")) {
1291 ID3v2ExtraMetaPRIV *priv = &cur->data.priv;
1292 AVBPrint bprint;
1293 char *escaped, *key;
1294 int i, ret;
1295
1296 if ((key = av_asprintf(ID3v2_PRIV_METADATA_PREFIX "%s", priv->owner)) == NULL) {
1297 return AVERROR(ENOMEM);
1298 }
1299
1300 av_bprint_init(&bprint, priv->datasize + 1, AV_BPRINT_SIZE_UNLIMITED);
1301
1302 for (i = 0; i < priv->datasize; i++) {
1303 if (priv->data[i] < 32 || priv->data[i] > 126 || priv->data[i] == '\\') {
1304 av_bprintf(&bprint, "\\x%02x", priv->data[i]);
1305 } else {
1306 av_bprint_chars(&bprint, priv->data[i], 1);
1307 }
1308 }
1309
1310 if ((ret = av_bprint_finalize(&bprint, &escaped)) < 0) {
1311 av_free(key);
1312 return ret;
1313 }
1314
1315 if ((ret = av_dict_set(metadata, key, escaped, dict_flags)) < 0) {
1316 return ret;
1317 }
1318 }
1319 }
1320
1321 return 0;
1322 }
1323
ff_id3v2_parse_priv(AVFormatContext * s,ID3v2ExtraMeta * extra_meta)1324 int ff_id3v2_parse_priv(AVFormatContext *s, ID3v2ExtraMeta *extra_meta)
1325 {
1326 return ff_id3v2_parse_priv_dict(&s->metadata, extra_meta);
1327 }
1328