lib » zlib-1.2.3

infback.c File Reference

#include "zutil.h"
#include "inftrees.h"
#include "inflate.h"
#include "inffast.h"
#include "inffixed.h"

Include dependency graph for infback.c:

Go to the source code of this file.

Defines

#define LOAD()
#define RESTORE()
#define INITBITS()
#define PULL()
#define PULLBYTE()
#define NEEDBITS(n)
#define BITS(n)   ((unsigned)hold & ((1U << (n)) - 1))
#define DROPBITS(n)
#define BYTEBITS()
#define ROOM()

Functions

local void fixedtables OF ((struct inflate_state FAR *state))
int ZEXPORT inflateBackInit_ (z_streamp strm, int windowBits, unsigned char FAR *window, const char *version, int stream_size)
local void fixedtables (struct inflate_state FAR *state)
int ZEXPORT inflateBack (z_streamp strm, in_func in, void FAR *in_desc, out_func out, void FAR *out_desc)
int ZEXPORT inflateBackEnd (z_streamp strm)

Define Documentation

#define BITS (  n   )     ((unsigned)hold & ((1U << (n)) - 1))
 

Definition at line 181 of file infback.c.

 
#define BYTEBITS (   ) 
 

Value:

do { \
        hold >>= bits & 7; \
        bits -= bits & 7; \
    } while (0)

Definition at line 192 of file infback.c.

#define DROPBITS (  n   ) 
 

Value:

do { \
        hold >>= (n); \
        bits -= (unsigned)(n); \
    } while (0)

Definition at line 185 of file infback.c.

 
#define INITBITS (   ) 
 

Value:

do { \
        hold = 0; \
        bits = 0; \
    } while (0)

Definition at line 141 of file infback.c.

 
#define LOAD (   ) 
 

Value:

do { \
        put = strm->next_out; \
        left = strm->avail_out; \
        next = strm->next_in; \
        have = strm->avail_in; \
        hold = state->hold; \
        bits = state->bits; \
    } while (0)

Definition at line 119 of file infback.c.

Referenced by inflate().

#define NEEDBITS (  n   ) 
 

Value:

do { \
        while (bits < (unsigned)(n)) \
            PULLBYTE(); \
    } while (0)

Definition at line 174 of file infback.c.

 
#define PULL (   ) 
 

Value:

do { \
        if (have == 0) { \
            have = in(in_desc, &next); \
            if (have == 0) { \
                next = Z_NULL; \
                ret = Z_BUF_ERROR; \
                goto inf_leave; \
            } \
        } \
    } while (0)

Definition at line 149 of file infback.c.

 
#define PULLBYTE (   ) 
 

Value:

do { \
        PULL(); \
        have--; \
        hold += (unsigned long)(*next++) << bits; \
        bits += 8; \
    } while (0)

Definition at line 163 of file infback.c.

 
#define RESTORE (   ) 
 

Value:

do { \
        strm->next_out = put; \
        strm->avail_out = left; \
        strm->next_in = next; \
        strm->avail_in = have; \
        state->hold = hold; \
        state->bits = bits; \
    } while (0)

Definition at line 130 of file infback.c.

 
#define ROOM (   ) 
 

Value:

do { \
        if (left == 0) { \
            put = state->window; \
            left = state->wsize; \
            state->whave = left; \
            if (out(out_desc, put, left)) { \
                ret = Z_BUF_ERROR; \
                goto inf_leave; \
            } \
        } \
    } while (0)

Definition at line 201 of file infback.c.

Function Documentation

local void fixedtables (  struct inflate_state FAR *  state  ) 
 

Definition at line 73 of file infback.c.

References bits, distfix, DISTS, fixed(), inflate_table(), lenfix, LENS, and next.

int ZEXPORT inflateBack (  z_streamp  strm,
in_func  in,
void FAR *  in_desc,
out_func  out,
void FAR *  out_desc
) 
 

Definition at line 241 of file infback.c.

References bits, BYTEBITS, copy, DONE, inflate_state::have, inflate_state::hold, if(), inflate_state::last, left(), next, order, put(), state, TYPE, Z_NULL, and Z_STREAM_ERROR.

int ZEXPORT inflateBackEnd (  z_streamp  strm  ) 
 

Definition at line 614 of file infback.c.

References stderr, Tracev, Z_NULL, Z_OK, Z_STREAM_ERROR, and ZFREE.

Referenced by main().

int ZEXPORT inflateBackInit_ (  z_streamp  strm,
int  windowBits,
unsigned char FAR *  window,
const char *  version,
int  stream_size
) 
 

Definition at line 28 of file infback.c.

References state, stderr, Tracev, U, Z_MEM_ERROR, Z_NULL, Z_OK, Z_STREAM_ERROR, Z_VERSION_ERROR, ZALLOC, zcalloc(), zcfree(), and ZLIB_VERSION.

local void fixedtables OF (  (struct inflate_state FAR *state)   ) 
 

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