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90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
/*
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* ID3v2 header parser
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVFORMAT_ID3V2_H
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#define AVFORMAT_ID3V2_H
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#include <stdint.h>
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#include "avformat.h"
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#include "metadata.h"
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#define ID3v2_HEADER_SIZE 10
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/**
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* Default magic bytes for ID3v2 header: "ID3"
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*/
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#define ID3v2_DEFAULT_MAGIC "ID3"
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#define ID3v2_FLAG_DATALEN 0x0001
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#define ID3v2_FLAG_UNSYNCH 0x0002
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#define ID3v2_FLAG_ENCRYPTION 0x0004
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#define ID3v2_FLAG_COMPRESSION 0x0008
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enum ID3v2Encoding {
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ID3v2_ENCODING_ISO8859 = 0,
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ID3v2_ENCODING_UTF16BOM = 1,
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ID3v2_ENCODING_UTF16BE = 2,
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ID3v2_ENCODING_UTF8 = 3,
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};
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/**
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* Detect ID3v2 Header.
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* @param buf must be ID3v2_HEADER_SIZE byte long
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* @param magic magic bytes to identify the header, machine byte order.
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* If in doubt, use ID3v2_DEFAULT_MAGIC.
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*/
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int ff_id3v2_match(const uint8_t *buf, const char *magic);
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/**
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* Get the length of an ID3v2 tag.
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* @param buf must be ID3v2_HEADER_SIZE bytes long and point to the start of an
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* already detected ID3v2 tag
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*/
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int ff_id3v2_tag_len(const uint8_t *buf);
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/**
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* Read an ID3v2 tag
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*/
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void ff_id3v2_read(AVFormatContext *s, const char *magic);
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extern const AVMetadataConv ff_id3v2_34_metadata_conv[];
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extern const AVMetadataConv ff_id3v2_4_metadata_conv[];
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extern const AVMetadataConv ff_id3v2_2_metadata_conv[];
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/**
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* A list of text information frames allowed in both ID3 v2.3 and v2.4
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* http://www.id3.org/id3v2.4.0-frames
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* http://www.id3.org/id3v2.4.0-changes
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*/
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extern const char ff_id3v2_tags[][4];
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/**
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* ID3v2.4-only text information frames.
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*/
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extern const char ff_id3v2_4_tags[][4];
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/**
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* ID3v2.3-only text information frames.
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*/
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extern const char ff_id3v2_3_tags[][4];
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#endif /* AVFORMAT_ID3V2_H */
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