cannam@85: /*
cannam@85:  * libmad - MPEG audio decoder library
cannam@85:  * Copyright (C) 2000-2004 Underbit Technologies, Inc.
cannam@85:  *
cannam@85:  * This program is free software; you can redistribute it and/or modify
cannam@85:  * it under the terms of the GNU General Public License as published by
cannam@85:  * the Free Software Foundation; either version 2 of the License, or
cannam@85:  * (at your option) any later version.
cannam@85:  *
cannam@85:  * This program is distributed in the hope that it will be useful,
cannam@85:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
cannam@85:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
cannam@85:  * GNU General Public License for more details.
cannam@85:  *
cannam@85:  * You should have received a copy of the GNU General Public License
cannam@85:  * along with this program; if not, write to the Free Software
cannam@85:  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
cannam@85:  *
cannam@85:  * $Id: bit.h,v 1.12 2004/01/23 09:41:32 rob Exp $
cannam@85:  */
cannam@85: 
cannam@85: # ifndef LIBMAD_BIT_H
cannam@85: # define LIBMAD_BIT_H
cannam@85: 
cannam@85: struct mad_bitptr {
cannam@85:   unsigned char const *byte;
cannam@85:   unsigned short cache;
cannam@85:   unsigned short left;
cannam@85: };
cannam@85: 
cannam@85: void mad_bit_init(struct mad_bitptr *, unsigned char const *);
cannam@85: 
cannam@85: # define mad_bit_finish(bitptr)		/* nothing */
cannam@85: 
cannam@85: unsigned int mad_bit_length(struct mad_bitptr const *,
cannam@85: 			    struct mad_bitptr const *);
cannam@85: 
cannam@85: # define mad_bit_bitsleft(bitptr)  ((bitptr)->left)
cannam@85: unsigned char const *mad_bit_nextbyte(struct mad_bitptr const *);
cannam@85: 
cannam@85: void mad_bit_skip(struct mad_bitptr *, unsigned int);
cannam@85: unsigned long mad_bit_read(struct mad_bitptr *, unsigned int);
cannam@85: void mad_bit_write(struct mad_bitptr *, unsigned int, unsigned long);
cannam@85: 
cannam@85: unsigned short mad_bit_crc(struct mad_bitptr, unsigned int, unsigned short);
cannam@85: 
cannam@85: # endif