blob: db6092ae6addf493acbcdafdedd2c838034abf06
| 1 | /* |
| 2 | * libmad - MPEG audio decoder library |
| 3 | * Copyright (C) 2000-2004 Underbit Technologies, Inc. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | * |
| 19 | * $Id: bit.h,v 1.12 2004/01/23 09:41:32 rob Exp $ |
| 20 | */ |
| 21 | |
| 22 | # ifndef LIBMAD_BIT_H |
| 23 | # define LIBMAD_BIT_H |
| 24 | |
| 25 | struct mad_bitptr { |
| 26 | unsigned char const *byte; |
| 27 | unsigned short cache; |
| 28 | unsigned short left; |
| 29 | }; |
| 30 | |
| 31 | void mad_bit_init(struct mad_bitptr *, unsigned char const *); |
| 32 | |
| 33 | # define mad_bit_finish(bitptr) /* nothing */ |
| 34 | |
| 35 | unsigned int mad_bit_length(struct mad_bitptr const *, |
| 36 | struct mad_bitptr const *); |
| 37 | |
| 38 | # define mad_bit_bitsleft(bitptr) ((bitptr)->left) |
| 39 | unsigned char const *mad_bit_nextbyte(struct mad_bitptr const *); |
| 40 | |
| 41 | void mad_bit_skip(struct mad_bitptr *, unsigned int); |
| 42 | unsigned long mad_bit_read(struct mad_bitptr *, unsigned int); |
| 43 | void mad_bit_write(struct mad_bitptr *, unsigned int, unsigned long); |
| 44 | |
| 45 | unsigned short mad_bit_crc(struct mad_bitptr, unsigned int, unsigned short); |
| 46 | |
| 47 | # endif |
| 48 |