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2ea512a6 AC |
1 | /* |
2 | * ID3v2 header parser | |
3 | * Copyright (c) 2003 Fabrice Bellard | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg 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 | * FFmpeg 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 FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #include "id3v2.h" | |
23 | ||
24 | int ff_id3v2_match(const uint8_t *buf) | |
25 | { | |
26 | return buf[0] == 'I' && | |
27 | buf[1] == 'D' && | |
28 | buf[2] == '3' && | |
29 | buf[3] != 0xff && | |
30 | buf[4] != 0xff && | |
31 | (buf[6] & 0x80) == 0 && | |
32 | (buf[7] & 0x80) == 0 && | |
33 | (buf[8] & 0x80) == 0 && | |
34 | (buf[9] & 0x80) == 0; | |
35 | } |