|
|
|
|
/*
|
|
|
|
|
* ID3v2 header parser
|
|
|
|
|
* Copyright (c) 2003 Fabrice Bellard
|
|
|
|
|
*
|
|
|
|
|
* This file is part of FFmpeg.
|
|
|
|
|
*
|
|
|
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
|
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
|
|
|
* License as published by the Free Software Foundation; either
|
|
|
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
|
|
|
*
|
|
|
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
|
|
* Lesser General Public License for more details.
|
|
|
|
|
*
|
|
|
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
|
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#ifndef AVFORMAT_ID3V2_H
|
|
|
|
|
#define AVFORMAT_ID3V2_H
|
|
|
|
|
|
|
|
|
|
#include <stdint.h>
|
|
|
|
|
#include "avformat.h"
|
|
|
|
|
#include "metadata.h"
|
|
|
|
|
|
|
|
|
|
#define ID3v2_HEADER_SIZE 10
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Default magic bytes for ID3v2 header: "ID3"
|
|
|
|
|
*/
|
|
|
|
|
#define ID3v2_DEFAULT_MAGIC "ID3"
|
|
|
|
|
|
|
|
|
|
#define ID3v2_FLAG_DATALEN 0x0001
|
|
|
|
|
#define ID3v2_FLAG_UNSYNCH 0x0002
|
|
|
|
|
#define ID3v2_FLAG_ENCRYPTION 0x0004
|
|
|
|
|
#define ID3v2_FLAG_COMPRESSION 0x0008
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Detect ID3v2 Header.
|
|
|
|
|
* @param buf must be ID3v2_HEADER_SIZE byte long
|
|
|
|
|
* @param magic magic bytes to identify the header, machine byte order.
|
|
|
|
|
* If in doubt, use ID3v2_DEFAULT_MAGIC.
|
|
|
|
|
*/
|
|
|
|
|
int ff_id3v2_match(const uint8_t *buf, const char *magic);
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Get the length of an ID3v2 tag.
|
|
|
|
|
* @param buf must be ID3v2_HEADER_SIZE bytes long and point to the start of an
|
|
|
|
|
* already detected ID3v2 tag
|
|
|
|
|
*/
|
|
|
|
|
int ff_id3v2_tag_len(const uint8_t *buf);
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* ID3v2 parser
|
|
|
|
|
* Handles ID3v2.2, 2.3 and 2.4.
|
|
|
|
|
*/
|
|
|
|
|
void ff_id3v2_parse(AVFormatContext *s, int len, uint8_t version, uint8_t flags);
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Read an ID3v2 tag
|
|
|
|
|
*/
|
|
|
|
|
void ff_id3v2_read(AVFormatContext *s, const char *magic);
|
|
|
|
|
|
|
|
|
|
extern const AVMetadataConv ff_id3v2_metadata_conv[];
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* A list of ID3v2.4 text information frames.
|
|
|
|
|
* http://www.id3.org/id3v2.4.0-frames
|
|
|
|
|
*/
|
|
|
|
|
extern const char ff_id3v2_tags[][4];
|
|
|
|
|
|
|
|
|
|
#endif /* AVFORMAT_ID3V2_H */
|
