id3v2.h
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1 /*
2  * ID3v2 header parser
3  * Copyright (c) 2003 Fabrice Bellard
4  *
5  * This file is part of Libav.
6  *
7  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #ifndef AVFORMAT_ID3V2_H
23 #define AVFORMAT_ID3V2_H
24 
25 #include <stdint.h>
26 #include "avformat.h"
27 #include "metadata.h"
28 
29 #define ID3v2_HEADER_SIZE 10
30 
34 #define ID3v2_DEFAULT_MAGIC "ID3"
35 
36 #define ID3v2_FLAG_DATALEN 0x0001
37 #define ID3v2_FLAG_UNSYNCH 0x0002
38 #define ID3v2_FLAG_ENCRYPTION 0x0004
39 #define ID3v2_FLAG_COMPRESSION 0x0008
40 
46 };
47 
48 typedef struct ID3v2ExtraMeta {
49  const char *tag;
50  void *data;
53 
54 typedef struct ID3v2ExtraMetaGEOB {
55  uint32_t datasize;
56  uint8_t *mime_type;
57  uint8_t *file_name;
58  uint8_t *description;
59  uint8_t *data;
61 
68 int ff_id3v2_match(const uint8_t *buf, const char *magic);
69 
75 int ff_id3v2_tag_len(const uint8_t *buf);
76 
80 void ff_id3v2_read(AVFormatContext *s, const char *magic);
81 
87 void ff_id3v2_read_all(AVFormatContext *s, const char *magic, ID3v2ExtraMeta **extra_meta);
88 
95 int ff_id3v2_write(struct AVFormatContext *s, int id3v2_version, const char *magic);
96 
101 void ff_id3v2_free_extra_meta(ID3v2ExtraMeta **extra_meta);
102 
105 
111 extern const char ff_id3v2_tags[][4];
112 
116 extern const char ff_id3v2_4_tags[][4];
117 
121 extern const char ff_id3v2_3_tags[][4];
122 
123 #endif /* AVFORMAT_ID3V2_H */