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libavformat/id3v2.h

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00001 /*
00002  * ID3v2 header parser
00003  * Copyright (c) 2003 Fabrice Bellard
00004  *
00005  * This file is part of Libav.
00006  *
00007  * Libav is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * Libav is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with Libav; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00022 #ifndef AVFORMAT_ID3V2_H
00023 #define AVFORMAT_ID3V2_H
00024 
00025 #include <stdint.h>
00026 #include "avformat.h"
00027 #include "metadata.h"
00028 
00029 #define ID3v2_HEADER_SIZE 10
00030 
00034 #define ID3v2_DEFAULT_MAGIC "ID3"
00035 
00036 #define ID3v2_FLAG_DATALEN     0x0001
00037 #define ID3v2_FLAG_UNSYNCH     0x0002
00038 #define ID3v2_FLAG_ENCRYPTION  0x0004
00039 #define ID3v2_FLAG_COMPRESSION 0x0008
00040 
00041 enum ID3v2Encoding {
00042     ID3v2_ENCODING_ISO8859  = 0,
00043     ID3v2_ENCODING_UTF16BOM = 1,
00044     ID3v2_ENCODING_UTF16BE  = 2,
00045     ID3v2_ENCODING_UTF8     = 3,
00046 };
00047 
00048 typedef struct ID3v2ExtraMeta {
00049     const char *tag;
00050     void *data;
00051     struct ID3v2ExtraMeta *next;
00052 } ID3v2ExtraMeta;
00053 
00054 typedef struct ID3v2ExtraMetaGEOB {
00055     uint32_t datasize;
00056     uint8_t *mime_type;
00057     uint8_t *file_name;
00058     uint8_t *description;
00059     uint8_t *data;
00060 } ID3v2ExtraMetaGEOB;
00061 
00068 int ff_id3v2_match(const uint8_t *buf, const char *magic);
00069 
00075 int ff_id3v2_tag_len(const uint8_t *buf);
00076 
00080 void ff_id3v2_read(AVFormatContext *s, const char *magic);
00081 
00087 void ff_id3v2_read_all(AVFormatContext *s, const char *magic, ID3v2ExtraMeta **extra_meta);
00088 
00095 int ff_id3v2_write(struct AVFormatContext *s, int id3v2_version, const char *magic);
00096 
00101 void ff_id3v2_free_extra_meta(ID3v2ExtraMeta **extra_meta);
00102 
00103 extern const AVMetadataConv ff_id3v2_34_metadata_conv[];
00104 extern const AVMetadataConv ff_id3v2_4_metadata_conv[];
00105 
00111 extern const char ff_id3v2_tags[][4];
00112 
00116 extern const char ff_id3v2_4_tags[][4];
00117 
00121 extern const char ff_id3v2_3_tags[][4];
00122 
00123 #endif /* AVFORMAT_ID3V2_H */
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