1*22ce4affSfengbojiang /*- 2*22ce4affSfengbojiang * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3*22ce4affSfengbojiang * 4*22ce4affSfengbojiang * Copyright (c) 2014, 2017 Mark Johnston <[email protected]> 5*22ce4affSfengbojiang * 6*22ce4affSfengbojiang * Redistribution and use in source and binary forms, with or without 7*22ce4affSfengbojiang * modification, are permitted provided that the following conditions are 8*22ce4affSfengbojiang * met: 9*22ce4affSfengbojiang * 1. Redistributions of source code must retain the above copyright 10*22ce4affSfengbojiang * notice, this list of conditions and the following disclaimer. 11*22ce4affSfengbojiang * 2. Redistributions in binary form must reproduce the above copyright 12*22ce4affSfengbojiang * notice, this list of conditions and the following disclaimer in 13*22ce4affSfengbojiang * the documentation and/or other materials provided with the 14*22ce4affSfengbojiang * distribution. 15*22ce4affSfengbojiang * 16*22ce4affSfengbojiang * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17*22ce4affSfengbojiang * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18*22ce4affSfengbojiang * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19*22ce4affSfengbojiang * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20*22ce4affSfengbojiang * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21*22ce4affSfengbojiang * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22*22ce4affSfengbojiang * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23*22ce4affSfengbojiang * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24*22ce4affSfengbojiang * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25*22ce4affSfengbojiang * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26*22ce4affSfengbojiang * SUCH DAMAGE. 27*22ce4affSfengbojiang * 28*22ce4affSfengbojiang * $FreeBSD$ 29*22ce4affSfengbojiang */ 30*22ce4affSfengbojiang 31*22ce4affSfengbojiang #ifndef _SYS__COMPRESSOR_H_ 32*22ce4affSfengbojiang #define _SYS__COMPRESSOR_H_ 33*22ce4affSfengbojiang 34*22ce4affSfengbojiang #ifdef _KERNEL 35*22ce4affSfengbojiang 36*22ce4affSfengbojiang /* Supported formats. */ 37*22ce4affSfengbojiang #define COMPRESS_GZIP 1 38*22ce4affSfengbojiang #define COMPRESS_ZSTD 2 39*22ce4affSfengbojiang 40*22ce4affSfengbojiang typedef int (*compressor_cb_t)(void *, size_t, off_t, void *); 41*22ce4affSfengbojiang 42*22ce4affSfengbojiang struct compressor; 43*22ce4affSfengbojiang 44*22ce4affSfengbojiang bool compressor_avail(int format); 45*22ce4affSfengbojiang struct compressor *compressor_init(compressor_cb_t cb, int format, 46*22ce4affSfengbojiang size_t maxiosize, int level, void *arg); 47*22ce4affSfengbojiang void compressor_reset(struct compressor *stream); 48*22ce4affSfengbojiang int compressor_write(struct compressor *stream, void *data, 49*22ce4affSfengbojiang size_t len); 50*22ce4affSfengbojiang int compressor_flush(struct compressor *stream); 51*22ce4affSfengbojiang void compressor_fini(struct compressor *stream); 52*22ce4affSfengbojiang 53*22ce4affSfengbojiang #endif /* _KERNEL */ 54*22ce4affSfengbojiang #endif /* _SYS__COMPRESSOR_H_ */ 55