The Tor Browser: modules/libbz2/src/bzlib_private.h@6474c204b198 (annotated)

modules/libbz2/src/bzlib_private.h@6474c204b198 (annotated)

modules/libbz2/src/bzlib_private.h

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*-------------------------------------------------------------*/
 /*--- Private header file for the library.                  ---*/
 /*---                                       bzlib_private.h ---*/
 /*-------------------------------------------------------------*/
 /* ------------------------------------------------------------------
    This file is part of bzip2/libbzip2, a program and library for
    lossless, block-sorting data compression.
    bzip2/libbzip2 version 1.0.4 of 20 December 2006
    Copyright (C) 1996-2006 Julian Seward <jseward@bzip.org>
    Please read the WARNING, DISCLAIMER and PATENTS sections in the
    README file.
    This program is released under the terms of the license contained
    in the file LICENSE.
    ------------------------------------------------------------------ */
 #ifndef _BZLIB_PRIVATE_H
 #define _BZLIB_PRIVATE_H
 #include <stdlib.h>
 #ifndef BZ_NO_STDIO
 #include <stdio.h>
 #include <ctype.h>
 #include <string.h>
 #endif
 #include "bzlib.h"
 /*-- General stuff. --*/
 #define BZ_VERSION  "1.0.4, 20-Dec-2006"
 typedef char            Char;
 typedef unsigned char   Bool;
 typedef unsigned char   UChar;
 typedef int             Int32;
 typedef unsigned int    UInt32;
 typedef short           Int16;
 typedef unsigned short  UInt16;
 #define True  ((Bool)1)
 #define False ((Bool)0)
 #ifndef __GNUC__
 #define __inline__  /* */
 #endif
 #ifndef BZ_NO_STDIO
 extern void BZ2_bz__AssertH__fail ( int errcode );
 #define AssertH(cond,errcode) \
    { if (!(cond)) BZ2_bz__AssertH__fail ( errcode ); }
 #if BZ_DEBUG
 #define AssertD(cond,msg) \
    { if (!(cond)) {       \
       fprintf ( stderr,   \
         "\n\nlibbzip2(debug build): internal error\n\t%s\n", msg );\
       exit(1); \
    }}
 #else
 #define AssertD(cond,msg) /* */
 #endif
 #define VPrintf0(zf) \
    fprintf(stderr,zf)
 #define VPrintf1(zf,za1) \
    fprintf(stderr,zf,za1)
 #define VPrintf2(zf,za1,za2) \
    fprintf(stderr,zf,za1,za2)
 #define VPrintf3(zf,za1,za2,za3) \
    fprintf(stderr,zf,za1,za2,za3)
 #define VPrintf4(zf,za1,za2,za3,za4) \
    fprintf(stderr,zf,za1,za2,za3,za4)
 #define VPrintf5(zf,za1,za2,za3,za4,za5) \
    fprintf(stderr,zf,za1,za2,za3,za4,za5)
 #else
 extern void bz_internal_error ( int errcode );
 #define AssertH(cond,errcode) \
    { if (!(cond)) bz_internal_error ( errcode ); }
 #define AssertD(cond,msg)                do { } while (0)
 #define VPrintf0(zf)                     do { } while (0)
 #define VPrintf1(zf,za1)                 do { } while (0)
 #define VPrintf2(zf,za1,za2)             do { } while (0)
 #define VPrintf3(zf,za1,za2,za3)         do { } while (0)
 #define VPrintf4(zf,za1,za2,za3,za4)     do { } while (0)
 #define VPrintf5(zf,za1,za2,za3,za4,za5) do { } while (0)
 #endif
 #define BZALLOC(nnn) (strm->bzalloc)(strm->opaque,(nnn),1)
 #define BZFREE(ppp)  (strm->bzfree)(strm->opaque,(ppp))
 /*-- Header bytes. --*/
 #define BZ_HDR_B 0x42   /* 'B' */
 #define BZ_HDR_Z 0x5a   /* 'Z' */
 #define BZ_HDR_h 0x68   /* 'h' */
 #define BZ_HDR_0 0x30   /* '0' */
 /*-- Constants for the back end. --*/
 #define BZ_MAX_ALPHA_SIZE 258
 #define BZ_MAX_CODE_LEN    23
 #define BZ_RUNA 0
 #define BZ_RUNB 1
 #define BZ_N_GROUPS 6
 #define BZ_G_SIZE   50
 #define BZ_N_ITERS  4
 #define BZ_MAX_SELECTORS (2 + (900000 / BZ_G_SIZE))
 /*-- Stuff for randomising repetitive blocks. --*/
 extern Int32 BZ2_rNums[512];
 #define BZ_RAND_DECLS                          \
    Int32 rNToGo;                               \
    Int32 rTPos                                 \
 #define BZ_RAND_INIT_MASK                      \
    s->rNToGo = 0;                              \
    s->rTPos  = 0                               \
 #define BZ_RAND_MASK ((s->rNToGo == 1) ? 1 : 0)
 #define BZ_RAND_UPD_MASK                       \
    if (s->rNToGo == 0) {                       \
       s->rNToGo = BZ2_rNums[s->rTPos];         \
       s->rTPos++;                              \
       if (s->rTPos == 512) s->rTPos = 0;       \
    }                                           \
    s->rNToGo--;
 /*-- Stuff for doing CRCs. --*/
 extern UInt32 BZ2_crc32Table[256];
 #define BZ_INITIALISE_CRC(crcVar)              \
 {                                              \
    crcVar = 0xffffffffL;                       \
 }
 #define BZ_FINALISE_CRC(crcVar)                \
 {                                              \
    crcVar = ~(crcVar);                         \
 }
 #define BZ_UPDATE_CRC(crcVar,cha)              \
 {                                              \
    crcVar = (crcVar << 8) ^                    \
             BZ2_crc32Table[(crcVar >> 24) ^    \
                            ((UChar)cha)];      \
 }
 /*-- States and modes for compression. --*/
 #define BZ_M_IDLE      1
 #define BZ_M_RUNNING   2
 #define BZ_M_FLUSHING  3
 #define BZ_M_FINISHING 4
 #define BZ_S_OUTPUT    1
 #define BZ_S_INPUT     2
 #define BZ_N_RADIX 2
 #define BZ_N_QSORT 12
 #define BZ_N_SHELL 18
 #define BZ_N_OVERSHOOT (BZ_N_RADIX + BZ_N_QSORT + BZ_N_SHELL + 2)
 /*-- Structure holding all the compression-side stuff. --*/
 typedef
    struct {
       /* pointer back to the struct bz_stream */
       bz_stream* strm;
       /* mode this stream is in, and whether inputting */
       /* or outputting data */
       Int32    mode;
       Int32    state;
       /* remembers avail_in when flush/finish requested */
       UInt32   avail_in_expect;
       /* for doing the block sorting */
       UInt32*  arr1;
       UInt32*  arr2;
       UInt32*  ftab;
       Int32    origPtr;
       /* aliases for arr1 and arr2 */
       UInt32*  ptr;
       UChar*   block;
       UInt16*  mtfv;
       UChar*   zbits;
       /* for deciding when to use the fallback sorting algorithm */
       Int32    workFactor;
       /* run-length-encoding of the input */
       UInt32   state_in_ch;
       Int32    state_in_len;
       BZ_RAND_DECLS;
       /* input and output limits and current posns */
       Int32    nblock;
       Int32    nblockMAX;
       Int32    numZ;
       Int32    state_out_pos;
       /* map of bytes used in block */
       Int32    nInUse;
       Bool     inUse[256];
       UChar    unseqToSeq[256];
       /* the buffer for bit stream creation */
       UInt32   bsBuff;
       Int32    bsLive;
       /* block and combined CRCs */
       UInt32   blockCRC;
       UInt32   combinedCRC;
       /* misc administratium */
       Int32    verbosity;
       Int32    blockNo;
       Int32    blockSize100k;
       /* stuff for coding the MTF values */
       Int32    nMTF;
       Int32    mtfFreq    [BZ_MAX_ALPHA_SIZE];
       UChar    selector   [BZ_MAX_SELECTORS];
       UChar    selectorMtf[BZ_MAX_SELECTORS];
       UChar    len     [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
       Int32    code    [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
       Int32    rfreq   [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
       /* second dimension: only 3 needed; 4 makes index calculations faster */
       UInt32   len_pack[BZ_MAX_ALPHA_SIZE][4];
    }
    EState;
 /*-- externs for compression. --*/
 extern void
 BZ2_blockSort ( EState* );
 extern void
 BZ2_compressBlock ( EState*, Bool );
 extern void
 BZ2_bsInitWrite ( EState* );
 extern void
 BZ2_hbAssignCodes ( Int32*, UChar*, Int32, Int32, Int32 );
 extern void
 BZ2_hbMakeCodeLengths ( UChar*, Int32*, Int32, Int32 );
 /*-- states for decompression. --*/
 #define BZ_X_IDLE        1
 #define BZ_X_OUTPUT      2
 #define BZ_X_MAGIC_1     10
 #define BZ_X_MAGIC_2     11
 #define BZ_X_MAGIC_3     12
 #define BZ_X_MAGIC_4     13
 #define BZ_X_BLKHDR_1    14
 #define BZ_X_BLKHDR_2    15
 #define BZ_X_BLKHDR_3    16
 #define BZ_X_BLKHDR_4    17
 #define BZ_X_BLKHDR_5    18
 #define BZ_X_BLKHDR_6    19
 #define BZ_X_BCRC_1      20
 #define BZ_X_BCRC_2      21
 #define BZ_X_BCRC_3      22
 #define BZ_X_BCRC_4      23
 #define BZ_X_RANDBIT     24
 #define BZ_X_ORIGPTR_1   25
 #define BZ_X_ORIGPTR_2   26
 #define BZ_X_ORIGPTR_3   27
 #define BZ_X_MAPPING_1   28
 #define BZ_X_MAPPING_2   29
 #define BZ_X_SELECTOR_1  30
 #define BZ_X_SELECTOR_2  31
 #define BZ_X_SELECTOR_3  32
 #define BZ_X_CODING_1    33
 #define BZ_X_CODING_2    34
 #define BZ_X_CODING_3    35
 #define BZ_X_MTF_1       36
 #define BZ_X_MTF_2       37
 #define BZ_X_MTF_3       38
 #define BZ_X_MTF_4       39
 #define BZ_X_MTF_5       40
 #define BZ_X_MTF_6       41
 #define BZ_X_ENDHDR_2    42
 #define BZ_X_ENDHDR_3    43
 #define BZ_X_ENDHDR_4    44
 #define BZ_X_ENDHDR_5    45
 #define BZ_X_ENDHDR_6    46
 #define BZ_X_CCRC_1      47
 #define BZ_X_CCRC_2      48
 #define BZ_X_CCRC_3      49
 #define BZ_X_CCRC_4      50
 /*-- Constants for the fast MTF decoder. --*/
 #define MTFA_SIZE 4096
 #define MTFL_SIZE 16
 /*-- Structure holding all the decompression-side stuff. --*/
 typedef
    struct {
       /* pointer back to the struct bz_stream */
       bz_stream* strm;
       /* state indicator for this stream */
       Int32    state;
       /* for doing the final run-length decoding */
       UChar    state_out_ch;
       Int32    state_out_len;
       Bool     blockRandomised;
       BZ_RAND_DECLS;
       /* the buffer for bit stream reading */
       UInt32   bsBuff;
       Int32    bsLive;
       /* misc administratium */
       Int32    blockSize100k;
       Bool     smallDecompress;
       Int32    currBlockNo;
       Int32    verbosity;
       /* for undoing the Burrows-Wheeler transform */
       Int32    origPtr;
       UInt32   tPos;
       Int32    k0;
       Int32    unzftab[256];
       Int32    nblock_used;
       Int32    cftab[257];
       Int32    cftabCopy[257];
       /* for undoing the Burrows-Wheeler transform (FAST) */
       UInt32   *tt;
       /* for undoing the Burrows-Wheeler transform (SMALL) */
       UInt16   *ll16;
       UChar    *ll4;
       /* stored and calculated CRCs */
       UInt32   storedBlockCRC;
       UInt32   storedCombinedCRC;
       UInt32   calculatedBlockCRC;
       UInt32   calculatedCombinedCRC;
       /* map of bytes used in block */
       Int32    nInUse;
       Bool     inUse[256];
       Bool     inUse16[16];
       UChar    seqToUnseq[256];
       /* for decoding the MTF values */
       UChar    mtfa   [MTFA_SIZE];
       Int32    mtfbase[256 / MTFL_SIZE];
       UChar    selector   [BZ_MAX_SELECTORS];
       UChar    selectorMtf[BZ_MAX_SELECTORS];
       UChar    len  [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
       Int32    limit  [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
       Int32    base   [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
       Int32    perm   [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
       Int32    minLens[BZ_N_GROUPS];
       /* save area for scalars in the main decompress code */
       Int32    save_i;
       Int32    save_j;
       Int32    save_t;
       Int32    save_alphaSize;
       Int32    save_nGroups;
       Int32    save_nSelectors;
       Int32    save_EOB;
       Int32    save_groupNo;
       Int32    save_groupPos;
       Int32    save_nextSym;
       Int32    save_nblockMAX;
       Int32    save_nblock;
       Int32    save_es;
       Int32    save_N;
       Int32    save_curr;
       Int32    save_zt;
       Int32    save_zn;
       Int32    save_zvec;
       Int32    save_zj;
       Int32    save_gSel;
       Int32    save_gMinlen;
       Int32*   save_gLimit;
       Int32*   save_gBase;
       Int32*   save_gPerm;
    }
    DState;
 /*-- Macros for decompression. --*/
 #define BZ_GET_FAST(cccc)                     \
     s->tPos = s->tt[s->tPos];                 \
     cccc = (UChar)(s->tPos & 0xff);           \
     s->tPos >>= 8;
 #define BZ_GET_FAST_C(cccc)                   \
     c_tPos = c_tt[c_tPos];                    \
     cccc = (UChar)(c_tPos & 0xff);            \
     c_tPos >>= 8;
 #define SET_LL4(i,n)                                          \
    { if (((i) & 0x1) == 0)                                    \
         s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0xf0) | (n); else    \
         s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0x0f) | ((n) << 4);  \
    }
 #define GET_LL4(i)                             \
    ((((UInt32)(s->ll4[(i) >> 1])) >> (((i) << 2) & 0x4)) & 0xF)
 #define SET_LL(i,n)                          \
    { s->ll16[i] = (UInt16)(n & 0x0000ffff);  \
      SET_LL4(i, n >> 16);                    \
    }
 #define GET_LL(i) \
    (((UInt32)s->ll16[i]) | (GET_LL4(i) << 16))
 #define BZ_GET_SMALL(cccc)                            \
       cccc = BZ2_indexIntoF ( s->tPos, s->cftab );    \
       s->tPos = GET_LL(s->tPos);
 /*-- externs for decompression. --*/
 extern Int32
 BZ2_indexIntoF ( Int32, Int32* );
 extern Int32
 BZ2_decompress ( DState* );
 extern void
 BZ2_hbCreateDecodeTables ( Int32*, Int32*, Int32*, UChar*,
                            Int32,  Int32, Int32 );
 #endif
 /*-- BZ_NO_STDIO seems to make NULL disappear on some platforms. --*/
 #ifdef BZ_NO_STDIO
 #ifndef NULL
 #define NULL 0
 #endif
 #endif
 /*-------------------------------------------------------------*/
 /*--- end                                   bzlib_private.h ---*/
 /*-------------------------------------------------------------*/

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modules/libbz2/src/bzlib_private.h@6474c204b198 (annotated)

modules/libbz2/src/bzlib_private.h