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- /*-
- * 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
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