337b50efa8
- HOLE - it simply turns all-zero blocks into few bytes header; it is extremely fast, so it is turned on by default; it is mostly intended to speed up initial synchronization where we expect many zeros; - LZF - very fast algorithm by Marc Alexander Lehmann, which shows very decent compression ratio and has BSD license. MFC after: 2 weeks
45 lines
1.8 KiB
C
45 lines
1.8 KiB
C
/*-
|
|
* Copyright (c) 2011 Pawel Jakub Dawidek <pawel@dawidek.net>
|
|
* 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, 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 AUTHORS 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 AUTHORS 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _HAST_COMPRESSION_H_
|
|
#define _HAST_COMPRESSION_H_
|
|
|
|
#include <stdlib.h> /* size_t */
|
|
|
|
#include <hast.h>
|
|
#include <nv.h>
|
|
|
|
const char *compression_name(int num);
|
|
|
|
int compression_send(const struct hast_resource *res, struct nv *nv,
|
|
void **datap, size_t *sizep, bool *freedatap);
|
|
int compression_recv(const struct hast_resource *res, struct nv *nv,
|
|
void **datap, size_t *sizep, bool *freedatap);
|
|
|
|
#endif /* !_HAST_COMPRESSION_H_ */
|