decompress.c File Reference

#include "bzlib_private.h"

Macros
#define	RETURN(rrr)
#define	GET_BITS(lll, vvv, nnn)
#define	GET_UCHAR(lll, uuu)
#define	GET_BIT(lll, uuu)
#define	GET_MTF_VAL(label1, label2, lval)

Functions
Int32	BZ2_decompress (DState *s)

Macro Definition Documentation

GET_BIT

#define GET_BIT	(		lll,
			uuu )

Value:

   GET_BITS(lll,uuu,1)

GET_BITS

#define GET_BITS	(		lll,
			vvv,
			nnn )

Value:

   case lll: s->state = lll;                      \
   while (True) {                                 \
      if (s->bsLive >= nnn) {                     \
         UInt32 v;                                \
         v = (s->bsBuff >>                        \
             (s->bsLive-nnn)) & ((1 << nnn)-1);   \
         s->bsLive -= nnn;                        \
         vvv = v;                                 \
         break;                                   \
      }                                           \
      if (s->strm->avail_in == 0) RETURN(BZ_OK);  \
      s->bsBuff                                   \
         = (s->bsBuff << 8) |                     \
           ((UInt32)                              \
              (*((UChar*)(s->strm->next_in))));   \
      s->bsLive += 8;                             \
      s->strm->next_in++;                         \
      s->strm->avail_in--;                        \
      s->strm->total_in_lo32++;                   \
      if (s->strm->total_in_lo32 == 0)            \
         s->strm->total_in_hi32++;                \
   }

GET_MTF_VAL

#define GET_MTF_VAL	(		label1,
			label2,
			lval )

Value:

{                                                 \
   if (groupPos == 0) {                           \
      groupNo++;                                  \
      if (groupNo >= nSelectors)                  \
         RETURN(BZ_DATA_ERROR);                   \
      groupPos = BZ_G_SIZE;                       \
      gSel = s->selector[groupNo];                \
      gMinlen = s->minLens[gSel];                 \
      gLimit = &(s->limit[gSel][0]);              \
      gPerm = &(s->perm[gSel][0]);                \
      gBase = &(s->base[gSel][0]);                \
   }                                              \
   groupPos--;                                    \
   zn = gMinlen;                                  \
   GET_BITS(label1, zvec, zn);                    \
   while (1) {                                    \
      if (zn > 20 /* the longest code */)         \
         RETURN(BZ_DATA_ERROR);                   \
      if (zvec <= gLimit[zn]) break;              \
      zn++;                                       \
      GET_BIT(label2, zj);                        \
      zvec = (zvec << 1) | zj;                    \
   };                                             \
   if (zvec - gBase[zn] < 0                       \
       || zvec - gBase[zn] >= BZ_MAX_ALPHA_SIZE)  \
      RETURN(BZ_DATA_ERROR);                      \
   lval = gPerm[zvec - gBase[zn]];                \
}

GET_UCHAR

#define GET_UCHAR	(		lll,
			uuu )

Value:

   GET_BITS(lll,uuu,8)

RETURN

#define RETURN

(

rrr

)

Value:

   { retVal = rrr; goto save_state_and_return; };

Function Documentation

BZ2_decompress()

Int32 BZ2_decompress

(

DState *

s

)