include/bzlib.h

   1 /*
   2  * This file is a modified version of bzlib.h from the bzip2-1.0.2
   3  * distribution which can be found at http://sources.redhat.com/bzip2/
   4  */
   5
   6 /*-------------------------------------------------------------*/
   7 /*--- Public header file for the library.                   ---*/
   8 /*---                                               bzlib.h ---*/
   9 /*-------------------------------------------------------------*/
  10
  11 /*--
  12   This file is a part of bzip2 and/or libbzip2, a program and
  13   library for lossless, block-sorting data compression.
  14
  15   Copyright (C) 1996-2002 Julian R Seward.  All rights reserved.
  16
  17   Redistribution and use in source and binary forms, with or without
  18   modification, are permitted provided that the following conditions
  19   are met:
  20
  21   1. Redistributions of source code must retain the above copyright
  22      notice, this list of conditions and the following disclaimer.
  23
  24   2. The origin of this software must not be misrepresented; you must
  25      not claim that you wrote the original software.  If you use this
  26      software in a product, an acknowledgment in the product
  27      documentation would be appreciated but is not required.
  28
  29   3. Altered source versions must be plainly marked as such, and must
  30      not be misrepresented as being the original software.
  31
  32   4. The name of the author may not be used to endorse or promote
  33      products derived from this software without specific prior written
  34      permission.
  35
  36   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  37   OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  38   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  39   ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  40   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  41   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  42   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  43   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  44   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  45   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  46   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  47
  48   Julian Seward, Cambridge, UK.
  49   jseward@acm.org
  50   bzip2/libbzip2 version 1.0 of 21 March 2000
  51
  52   This program is based on (at least) the work of:
  53      Mike Burrows
  54      David Wheeler
  55      Peter Fenwick
  56      Alistair Moffat
  57      Radford Neal
  58      Ian H. Witten
  59      Robert Sedgewick
  60      Jon L. Bentley
  61
  62   For more information on these sources, see the manual.
  63 --*/
  64
  65
  66 #ifndef _BZLIB_H
  67 #define _BZLIB_H
  68
  69 /* Configure for U-Boot environment */
  70 #define BZ_NO_STDIO
  71
  72 #ifndef CONFIG_SANDBOX
  73 #define BZ_NO_COMPRESS
  74 #endif
  75 /* End of configuration for U-Boot environment */
  76
  77 #ifdef __cplusplus
  78 extern "C" {
  79 #endif
  80
  81 #define BZ_RUN               0
  82 #define BZ_FLUSH             1
  83 #define BZ_FINISH            2
  84
  85 #define BZ_OK                0
  86 #define BZ_RUN_OK            1
  87 #define BZ_FLUSH_OK          2
  88 #define BZ_FINISH_OK         3
  89 #define BZ_STREAM_END        4
  90 #define BZ_SEQUENCE_ERROR    (-1)
  91 #define BZ_PARAM_ERROR       (-2)
  92 #define BZ_MEM_ERROR         (-3)
  93 #define BZ_DATA_ERROR        (-4)
  94 #define BZ_DATA_ERROR_MAGIC  (-5)
  95 #define BZ_IO_ERROR          (-6)
  96 #define BZ_UNEXPECTED_EOF    (-7)
  97 #define BZ_OUTBUFF_FULL      (-8)
  98 #define BZ_CONFIG_ERROR      (-9)
  99
 100 typedef
 101    struct {
 102       char *next_in;
 103       unsigned int avail_in;
 104       unsigned int total_in_lo32;
 105       unsigned int total_in_hi32;
 106
 107       char *next_out;
 108       unsigned int avail_out;
 109       unsigned int total_out_lo32;
 110       unsigned int total_out_hi32;
 111
 112       void *state;
 113
 114       void *(*bzalloc)(void *,int,int);
 115       void (*bzfree)(void *,void *);
 116       void *opaque;
 117    }
 118    bz_stream;
 119
 120
 121 #ifndef BZ_IMPORT
 122 #define BZ_EXPORT
 123 #endif
 124
 125 #ifdef _WIN32
 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 /*-- High(er) level library functions --*/
 179
 180 #ifndef BZ_NO_STDIO
 181 #define BZ_MAX_UNUSED 5000
 182
 183 /* Need a definitition for FILE */
 184 #include <stdio.h>
 185
 186 typedef void BZFILE;
 187
 188 BZ_EXTERN BZFILE* BZ_API(BZ2_bzReadOpen) (
 189       int*  bzerror,
 190       FILE* f,
 191       int   verbosity,
 192       int   small,
 193       void* unused,
 194       int   nUnused
 195    );
 196
 197 BZ_EXTERN void BZ_API(BZ2_bzReadClose) (
 198       int*    bzerror,
 199       BZFILE* b
 200    );
 201
 202 BZ_EXTERN void BZ_API(BZ2_bzReadGetUnused) (
 203       int*    bzerror,
 204       BZFILE* b,
 205       void**  unused,
 206       int*    nUnused
 207    );
 208
 209 BZ_EXTERN int BZ_API(BZ2_bzRead) (
 210       int*    bzerror,
 211       BZFILE* b,
 212       void*   buf,
 213       int     len
 214    );
 215
 216 BZ_EXTERN BZFILE* BZ_API(BZ2_bzWriteOpen) (
 217       int*  bzerror,
 218       FILE* f,
 219       int   blockSize100k,
 220       int   verbosity,
 221       int   workFactor
 222    );
 223
 224 BZ_EXTERN void BZ_API(BZ2_bzWrite) (
 225       int*    bzerror,
 226       BZFILE* b,
 227       void*   buf,
 228       int     len
 229    );
 230
 231 BZ_EXTERN void BZ_API(BZ2_bzWriteClose) (
 232       int*          bzerror,
 233       BZFILE*       b,
 234       int           abandon,
 235       unsigned int* nbytes_in,
 236       unsigned int* nbytes_out
 237    );
 238
 239 BZ_EXTERN void BZ_API(BZ2_bzWriteClose64) (
 240       int*          bzerror,
 241       BZFILE*       b,
 242       int           abandon,
 243       unsigned int* nbytes_in_lo32,
 244       unsigned int* nbytes_in_hi32,
 245       unsigned int* nbytes_out_lo32,
 246       unsigned int* nbytes_out_hi32
 247    );
 248 #endif
 249
 250
 251 /*-- Utility functions --*/
 252
 253 BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffCompress) (
 254       char*         dest,
 255       unsigned int* destLen,
 256       char*         source,
 257       unsigned int  sourceLen,
 258       int           blockSize100k,
 259       int           verbosity,
 260       int           workFactor
 261    );
 262
 263 BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffDecompress) (
 264       char*         dest,
 265       unsigned int* destLen,
 266       char*         source,
 267       unsigned int  sourceLen,
 268       int           small,
 269       int           verbosity
 270    );
 271
 272
 273 /*--
 274    Code contributed by Yoshioka Tsuneo
 275    (QWF00133@niftyserve.or.jp/tsuneo-y@is.aist-nara.ac.jp),
 276    to support better zlib compatibility.
 277    This code is not _officially_ part of libbzip2 (yet);
 278    I haven't tested it, documented it, or considered the
 279    threading-safeness of it.
 280    If this code breaks, please contact both Yoshioka and me.
 281 --*/
 282
 283 BZ_EXTERN const char * BZ_API(BZ2_bzlibVersion) (
 284       void
 285    );
 286
 287 #ifndef BZ_NO_STDIO
 288 BZ_EXTERN BZFILE * BZ_API(BZ2_bzopen) (
 289       const char *path,
 290       const char *mode
 291    );
 292
 293 BZ_EXTERN BZFILE * BZ_API(BZ2_bzdopen) (
 294       int        fd,
 295       const char *mode
 296    );
 297
 298 BZ_EXTERN int BZ_API(BZ2_bzread) (
 299       BZFILE* b,
 300       void* buf,
 301       int len
 302    );
 303
 304 BZ_EXTERN int BZ_API(BZ2_bzwrite) (
 305       BZFILE* b,
 306       void*   buf,
 307       int     len
 308    );
 309
 310 BZ_EXTERN int BZ_API(BZ2_bzflush) (
 311       BZFILE* b
 312    );
 313
 314 BZ_EXTERN void BZ_API(BZ2_bzclose) (
 315       BZFILE* b
 316    );
 317
 318 BZ_EXTERN const char * BZ_API(BZ2_bzerror) (
 319       BZFILE *b,
 320       int    *errnum
 321    );
 322 #endif
 323
 324 #ifdef __cplusplus
 325 }
 326 #endif
 327
 328 #endif
 329
 330 /*-------------------------------------------------------------*/
 331 /*--- end                                           bzlib.h ---*/
 332 /*-------------------------------------------------------------*/