deflate.c File Reference

#include <linux/module.h>
#include <linux/zutil.h>
#include "defutil.h"

Go to the source code of this file.

Data Structures
struct	config_s

Macros
#define	NIL   0
#define	TOO_FAR   4096
#define	MIN_LOOKAHEAD   (MAX_MATCH+MIN_MATCH+1)
#define	EQUAL   0
#define	UPDATE_HASH(s, h, c)   (h = (((h)<<s->hash_shift) ^ (c)) & s->hash_mask)
#define	INSERT_STRING(s, str, match_head)
#define	CLEAR_HASH(s)
#define	check_match(s, start, match, length)
#define	FLUSH_BLOCK_ONLY(s, eof)
#define	FLUSH_BLOCK(s, eof)

Typedefs
typedef block_state(*	compress_func )(deflate_state *s, int flush)
typedef struct config_s	config

Enumerations
enum	block_state {   NON_BLOCKING, BLOCKING, need_more, block_done,   finish_started, finish_done }

Functions
int	zlib_deflateInit2 (z_streamp strm, int level, int method, int windowBits, int memLevel, int strategy)
int	zlib_deflateReset (z_streamp strm)
int	zlib_deflate (z_streamp strm, int flush)
int	zlib_deflateEnd (z_streamp strm)
int	zlib_deflate_workspacesize (int windowBits, int memLevel)

Macro Definition Documentation

#define check_match	(		s,
			start,
			match,
			length
	)

Definition at line 863 of file deflate.c.

#define CLEAR_HASH

(

s

)

Value:

s->head[s->hash_size-1] = NIL; \
    memset((char *)s->head, 0, (unsigned)(s->hash_size-1)*sizeof(*s->head));

Definition at line 162 of file deflate.c.

#define EQUAL   0

Definition at line 133 of file deflate.c.

#define FLUSH_BLOCK	(		s,
			eof
	)

Value:

{ \
   FLUSH_BLOCK_ONLY(s, eof); \
   if (s->strm->avail_out == 0) return (eof) ? finish_started : need_more; \
}

Definition at line 982 of file deflate.c.

#define FLUSH_BLOCK_ONLY	(		s,
			eof
	)

Value:

{ \
   zlib_tr_flush_block(s, (s->block_start >= 0L ? \
                   (char *)&s->window[(unsigned)s->block_start] : \
                   NULL), \
        (ulg)((long)s->strstart - s->block_start), \
        (eof)); \
   s->block_start = s->strstart; \
   flush_pending(s->strm); \
   Tracev((stderr,"[FLUSH]")); \
}

Definition at line 970 of file deflate.c.

#define INSERT_STRING	(		s,
			str,
			match_head
	)

Value:

(UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
    s->prev[(str) & s->w_mask] = match_head = s->head[s->ins_h], \
    s->head[s->ins_h] = (Pos)(str))

Definition at line 153 of file deflate.c.

#define MIN_LOOKAHEAD   (MAX_MATCH+MIN_MATCH+1)

Definition at line 96 of file deflate.c.

#define NIL   0

Definition at line 88 of file deflate.c.

#define TOO_FAR   4096

Definition at line 92 of file deflate.c.

#define UPDATE_HASH	(		s,
			h,
			c
	)		(h = (((h)<<s->hash_shift) ^ (c)) & s->hash_mask)

Definition at line 142 of file deflate.c.

Typedef Documentation

typedef block_state(* compress_func)(deflate_state *s, int flush)

Definition at line 66 of file deflate.c.

typedef struct config_s config

Enumeration Type Documentation

enum block_state

Enumerator:

NON_BLOCKING
BLOCKING
need_more
block_done
finish_started
finish_done

Definition at line 59 of file deflate.c.

Function Documentation

int zlib_deflate	(	z_streamp	strm,
		int	flush
	)

Definition at line 412 of file deflate.c.

int zlib_deflate_workspacesize	(	int	windowBits,
		int	memLevel
	)

Definition at line 1266 of file deflate.c.

int zlib_deflateEnd

(

z_streamp

strm

)

Definition at line 550 of file deflate.c.

int zlib_deflateInit2	(	z_streamp	strm,
		int	level,
		int	method,
		int	windowBits,
		int	memLevel,
		int	strategy
	)

Definition at line 167 of file deflate.c.

int zlib_deflateReset

(

z_streamp

strm

)

Definition at line 299 of file deflate.c.