/*-
* Copyright (c) 2007 Alexander Motin <mav@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* MPPC decompression library.
* Version 1.0
*
* Note that Hi/Fn (later acquired by Exar Corporation) held US patents
* on some implementation-critical aspects of MPPC compression.
* These patents lapsed due to non-payment of fees in 2007 and by 2015
* expired altogether.
*/
#ifndef _NET_MPPC_H_
#define _NET_MPPC_H_
#define MPPC_MANDATORY_COMPRESS_FLAGS 0
#define MPPC_MANDATORY_DECOMPRESS_FLAGS 0
#define MPPC_SAVE_HISTORY 1
#define MPPC_OK 5
#define MPPC_EXPANDED 8
#define MPPC_RESTART_HISTORY 16
#define MPPC_DEST_EXHAUSTED 32
extern size_t MPPC_SizeOfCompressionHistory(void);
extern size_t MPPC_SizeOfDecompressionHistory(void);
extern void MPPC_InitCompressionHistory(char *history);
extern void MPPC_InitDecompressionHistory(char *history);
extern int MPPC_Compress(u_char **src, u_char **dst, u_long *srcCnt, u_long *dstCnt, char *history, int flags, int undef);
extern int MPPC_Decompress(u_char **src, u_char **dst, u_long *srcCnt, u_long *dstCnt, char *history, int flags);
#endif
plain