bzlib.h (5924B)
1 /* 2 * THIS FILE IS NOT IDENTICAL TO THE ORIGINAL 3 * FROM THE BZIP2 DISTRIBUTION. 4 * 5 * It has been modified, mainly to break the library 6 * into smaller pieces. 7 * 8 * Russ Cox 9 * rsc@plan9.bell-labs.com 10 * July 2000 11 */ 12 13 14 /*-------------------------------------------------------------*/ 15 /*--- Public header file for the library. ---*/ 16 /*--- bzlib.h ---*/ 17 /*-------------------------------------------------------------*/ 18 19 /*-- 20 This file is a part of bzip2 and/or libbzip2, a program and 21 library for lossless, block-sorting data compression. 22 23 Copyright (C) 1996-2000 Julian R Seward. All rights reserved. 24 25 Redistribution and use in source and binary forms, with or without 26 modification, are permitted provided that the following conditions 27 are met: 28 29 1. Redistributions of source code must retain the above copyright 30 notice, this list of conditions and the following disclaimer. 31 32 2. The origin of this software must not be misrepresented; you must 33 not claim that you wrote the original software. If you use this 34 software in a product, an acknowledgment in the product 35 documentation would be appreciated but is not required. 36 37 3. Altered source versions must be plainly marked as such, and must 38 not be misrepresented as being the original software. 39 40 4. The name of the author may not be used to endorse or promote 41 products derived from this software without specific prior written 42 permission. 43 44 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 45 OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 46 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 47 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 48 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 49 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 50 GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 51 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 52 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 53 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 54 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 56 Julian Seward, Cambridge, UK. 57 jseward@acm.org 58 bzip2/libbzip2 version 1.0 of 21 March 2000 59 60 This program is based on (at least) the work of: 61 Mike Burrows 62 David Wheeler 63 Peter Fenwick 64 Alistair Moffat 65 Radford Neal 66 Ian H. Witten 67 Robert Sedgewick 68 Jon L. Bentley 69 70 For more information on these sources, see the manual. 71 --*/ 72 73 #ifndef _BZLIB_H 74 #define _BZLIB_H 75 76 #ifdef __cplusplus 77 extern "C" { 78 #endif 79 80 #define BZ_RUN 0 81 #define BZ_FLUSH 1 82 #define BZ_FINISH 2 83 84 #define BZ_OK 0 85 #define BZ_RUN_OK 1 86 #define BZ_FLUSH_OK 2 87 #define BZ_FINISH_OK 3 88 #define BZ_STREAM_END 4 89 #define BZ_SEQUENCE_ERROR (-1) 90 #define BZ_PARAM_ERROR (-2) 91 #define BZ_MEM_ERROR (-3) 92 #define BZ_DATA_ERROR (-4) 93 #define BZ_DATA_ERROR_MAGIC (-5) 94 #define BZ_IO_ERROR (-6) 95 #define BZ_UNEXPECTED_EOF (-7) 96 #define BZ_OUTBUFF_FULL (-8) 97 #define BZ_CONFIG_ERROR (-9) 98 99 typedef 100 struct { 101 char *next_in; 102 unsigned int avail_in; 103 unsigned int total_in_lo32; 104 unsigned int total_in_hi32; 105 106 char *next_out; 107 unsigned int avail_out; 108 unsigned int total_out_lo32; 109 unsigned int total_out_hi32; 110 111 void *state; 112 113 void *(*bzalloc)(void *,int,int); 114 void (*bzfree)(void *,void *); 115 void *opaque; 116 } 117 bz_stream; 118 119 120 #ifndef BZ_IMPORT 121 #define BZ_EXPORT 122 #endif 123 124 #ifdef _WIN32 125 # include <stdio.h> 126 # include <windows.h> 127 # ifdef small 128 /* windows.h define small to char */ 129 # undef small 130 # endif 131 # ifdef BZ_EXPORT 132 # define BZ_API(func) WINAPI func 133 # define BZ_EXTERN extern 134 # else 135 /* import windows dll dynamically */ 136 # define BZ_API(func) (WINAPI * func) 137 # define BZ_EXTERN 138 # endif 139 #else 140 # define BZ_API(func) func 141 # define BZ_EXTERN extern 142 #endif 143 144 145 /*-- Core (low-level) library functions --*/ 146 147 BZ_EXTERN int BZ_API(BZ2_bzCompressInit) ( 148 bz_stream* strm, 149 int blockSize100k, 150 int verbosity, 151 int workFactor 152 ); 153 154 BZ_EXTERN int BZ_API(BZ2_bzCompress) ( 155 bz_stream* strm, 156 int action 157 ); 158 159 BZ_EXTERN int BZ_API(BZ2_bzCompressEnd) ( 160 bz_stream* strm 161 ); 162 163 BZ_EXTERN int BZ_API(BZ2_bzDecompressInit) ( 164 bz_stream *strm, 165 int verbosity, 166 int small 167 ); 168 169 BZ_EXTERN int BZ_API(BZ2_bzDecompress) ( 170 bz_stream* strm 171 ); 172 173 BZ_EXTERN int BZ_API(BZ2_bzDecompressEnd) ( 174 bz_stream *strm 175 ); 176 177 178 179 /*-- Utility functions --*/ 180 181 BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffCompress) ( 182 char* dest, 183 unsigned int* destLen, 184 char* source, 185 unsigned int sourceLen, 186 int blockSize100k, 187 int verbosity, 188 int workFactor 189 ); 190 191 BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffDecompress) ( 192 char* dest, 193 unsigned int* destLen, 194 char* source, 195 unsigned int sourceLen, 196 int small, 197 int verbosity 198 ); 199 200 201 /*-- 202 Code contributed by Yoshioka Tsuneo 203 (QWF00133@niftyserve.or.jp/tsuneo-y@is.aist-nara.ac.jp), 204 to support better zlib compatibility. 205 This code is not _officially_ part of libbzip2 (yet); 206 I haven't tested it, documented it, or considered the 207 threading-safeness of it. 208 If this code breaks, please contact both Yoshioka and me. 209 --*/ 210 211 BZ_EXTERN const char * BZ_API(BZ2_bzlibVersion) ( 212 void 213 ); 214 215 #ifdef __cplusplus 216 } 217 #endif 218 219 #endif 220 221 /*-------------------------------------------------------------*/ 222 /*--- end bzlib.h ---*/ 223 /*-------------------------------------------------------------*/