lznt1.h

#ifndef _LZNT1_H
#define _LZNT1_H

/*
 * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

/**
 * @file
 *
 * LZNT1 decompression
 *
 */

#include <stdint.h>

/** Extract LZNT1 block length */
#define LZNT1_BLOCK_LEN( header ) ( ( (header) & 0x0fff ) + 1 )

/** Determine if LZNT1 block is compressed */
#define LZNT1_BLOCK_COMPRESSED( header ) ( (header) & 0x8000 )

/** Extract LZNT1 compressed value length */
#define LZNT1_VALUE_LEN( tuple, split ) \
	( ( (tuple) & ( ( 1 << (split) ) - 1 ) ) + 3 )

/** Extract LZNT1 compressed value offset */
#define LZNT1_VALUE_OFFSET( tuple, split ) ( ( (tuple) >> split ) + 1 )

extern ssize_t lznt1_decompress ( const void *data, size_t len, void *buf );

#endif /* _LZNT1_H */