deflate.c File Reference

#include "deflate.h"

Go to the source code of this file.

Classes
struct	config_s
struct	static_tree_desc_s

Macros
#define	NIL   0
#define	TOO_FAR   4096
#define	EQUAL   0
#define	RANK(f)   (((f) << 1) - ((f) > 4 ? 9 : 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, last)
#define	FLUSH_BLOCK(s, last)

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

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

Functions
local void fill_window	OF ((deflate_state *s))
local block_state deflate_stored	OF ((deflate_state *s, int flush))
local void putShortMSB	OF ((deflate_state *s, uInt b))
local void flush_pending	OF ((z_streamp strm))
local int read_buf	OF ((z_streamp strm, Bytef *buf, unsigned size))
local uInt longest_match	OF ((deflate_state *s, IPos cur_match))
int ZEXPORT	deflateInit_ (z_streamp strm, int level, const char *version, int stream_size)
int ZEXPORT	deflateInit2_ (z_streamp strm, int level, int method, int windowBits, int memLevel, int strategy, const char *version, int stream_size)
int ZEXPORT	deflateSetDictionary (z_streamp strm, const Bytef *dictionary, uInt dictLength)
int ZEXPORT	deflateResetKeep (z_streamp strm)
int ZEXPORT	deflateReset (z_streamp strm)
int ZEXPORT	deflateSetHeader (z_streamp strm, gz_headerp head)
int ZEXPORT	deflatePending (z_streamp strm, unsigned *pending, int *bits)
int ZEXPORT	deflatePrime (z_streamp strm, int bits, int value)
int ZEXPORT	deflateParams (z_streamp strm, int level, int strategy)
int ZEXPORT	deflateTune (z_streamp strm, int good_length, int max_lazy, int nice_length, int max_chain)
uLong ZEXPORT	deflateBound (z_streamp strm, uLong sourceLen)
local void	putShortMSB (deflate_state *s, uInt b)
local void	flush_pending (z_streamp strm)
int ZEXPORT	deflate (z_streamp strm, int flush)
int ZEXPORT	deflateEnd (z_streamp strm)
int ZEXPORT	deflateCopy (z_streamp dest, z_streamp source)
local int	read_buf (z_streamp strm, Bytef *buf, unsigned size)
local void	lm_init (deflate_state *s)
local uInt	longest_match (deflate_state *s, IPos cur_match)
local void	fill_window (deflate_state *s)
local block_state	deflate_stored (deflate_state *s, int flush)
local block_state	deflate_fast (deflate_state *s, int flush)
local block_state	deflate_slow (deflate_state *s, int flush)
local block_state	deflate_rle (deflate_state *s, int flush)
local block_state	deflate_huff (deflate_state *s, int flush)

Variables
const char	deflate_copyright []
local const config	configuration_table [10]

Macro Definition Documentation

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

Definition at line 1375 of file deflate.c.

#define CLEAR_HASH

(

s)

Value:

s->head[s->hash_size-1] = NIL; \
    zmemzero((Bytef *)s->head, (unsigned)(s->hash_size-1)*sizeof(*s->head));

Definition at line 196 of file deflate.c.

#define EQUAL   0

Definition at line 151 of file deflate.c.

#define FLUSH_BLOCK	(		s,
			last
	)

Value:

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

Definition at line 1548 of file deflate.c.

#define FLUSH_BLOCK_ONLY	(		s,
			last
	)

Value:

{ \
   _tr_flush_block(s, (s->block_start >= 0L ? \
                   (charf *)&s->window[(unsigned)s->block_start] : \
                   (charf *)Z_NULL), \
                (ulg)((long)s->strstart - s->block_start), \
                (last)); \
   s->block_start = s->strstart; \
   flush_pending(s->strm); \
   Tracev((stderr,"[FLUSH]")); \
}

Definition at line 1536 of file deflate.c.

#define INSERT_STRING	(		s,
			str,
			match_head
	)

Value:

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

Definition at line 186 of file deflate.c.

#define NIL   0

Definition at line 104 of file deflate.c.

#define RANK

(

f)

(((f) << 1) - ((f) > 4 ? 9 : 0))

Definition at line 159 of file deflate.c.

#define TOO_FAR   4096

Definition at line 108 of file deflate.c.

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

Definition at line 167 of file deflate.c.

Typedef Documentation

typedef struct config_s config

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

Definition at line 73 of file deflate.c.

Enumeration Type Documentation

enum block_state

Enumerator
need_more
block_done
finish_started
finish_done

Definition at line 66 of file deflate.c.

Function Documentation

int ZEXPORT deflate	(	z_streamp	strm,
		int	flush
	)

Definition at line 663 of file deflate.c.

local block_state deflate_fast	(	deflate_state *	s,
		int	flush
	)

Definition at line 1626 of file deflate.c.

local block_state deflate_huff	(	deflate_state *	s,
		int	flush
	)

Definition at line 1932 of file deflate.c.

local block_state deflate_rle	(	deflate_state *	s,
		int	flush
	)

Definition at line 1859 of file deflate.c.

local block_state deflate_slow	(	deflate_state *	s,
		int	flush
	)

Definition at line 1728 of file deflate.c.

local block_state deflate_stored	(	deflate_state *	s,
		int	flush
	)

Definition at line 1562 of file deflate.c.

uLong ZEXPORT deflateBound	(	z_streamp	strm,
		uLong	sourceLen
	)

Definition at line 564 of file deflate.c.

int ZEXPORT deflateCopy	(	z_streamp	dest,
		z_streamp	source
	)

Definition at line 1012 of file deflate.c.

int ZEXPORT deflateEnd

(

z_streamp

strm)

Definition at line 977 of file deflate.c.

int ZEXPORT deflateInit2_	(	z_streamp	strm,
		int	level,
		int	method,
		int	windowBits,
		int	memLevel,
		int	strategy,
		const char *	version,
		int	stream_size
	)

Definition at line 213 of file deflate.c.

int ZEXPORT deflateInit_	(	z_streamp	strm,
		int	level,
		const char *	version,
		int	stream_size
	)

Definition at line 201 of file deflate.c.

int ZEXPORT deflateParams	(	z_streamp	strm,
		int	level,
		int	strategy
	)

Definition at line 490 of file deflate.c.

int ZEXPORT deflatePending	(	z_streamp	strm,
		unsigned *	pending,
		int *	bits
	)

Definition at line 450 of file deflate.c.

int ZEXPORT deflatePrime	(	z_streamp	strm,
		int	bits,
		int	value
	)

Definition at line 464 of file deflate.c.

int ZEXPORT deflateReset

(

z_streamp

strm)

Definition at line 427 of file deflate.c.

int ZEXPORT deflateResetKeep

(

z_streamp

strm)

Definition at line 392 of file deflate.c.

int ZEXPORT deflateSetDictionary	(	z_streamp	strm,
		const Bytef *	dictionary,
		uInt	dictLength
	)

Definition at line 323 of file deflate.c.

int ZEXPORT deflateSetHeader	(	z_streamp	strm,
		gz_headerp	head
	)

Definition at line 439 of file deflate.c.

int ZEXPORT deflateTune	(	z_streamp	strm,
		int	good_length,
		int	max_lazy,
		int	nice_length,
		int	max_chain
	)

Definition at line 529 of file deflate.c.

local void fill_window

(

deflate_state *

s)

Definition at line 1388 of file deflate.c.

local void flush_pending

(

z_streamp

strm)

Definition at line 640 of file deflate.c.

local void lm_init

(

deflate_state *

s)

Definition at line 1104 of file deflate.c.

local uInt longest_match	(	deflate_state *	s,
		IPos	cur_match
	)

Definition at line 1146 of file deflate.c.

local void fill_window OF

(

(deflate_state *s)

)

local block_state deflate_stored OF

(

(deflate_state *s, int flush)

)

local void putShortMSB OF

(

(deflate_state *s, uInt b)

)

local void flush_pending OF

(

(z_streamp strm)

)

local int read_buf OF

(

(z_streamp strm, Bytef *buf, unsigned size)

)

local uInt longest_match OF

(

(deflate_state *s, IPos cur_match)

)

local void putShortMSB	(	deflate_state *	s,
		uInt	b
	)

Definition at line 626 of file deflate.c.

local int read_buf	(	z_streamp	strm,
		Bytef *	buf,
		unsigned	size
	)

Definition at line 1074 of file deflate.c.

Variable Documentation

local const config configuration_table[10]

Initial value:

= {

 {0,    0,  0,    0, deflate_stored},  
 {4,    4,  8,    4, deflate_fast}, 
 {4,    5, 16,    8, deflate_fast},
 {4,    6, 32,   32, deflate_fast},

 {4,    4, 16,   16, deflate_slow},  
 {8,   16, 32,   32, deflate_slow},
 {8,   16, 128, 128, deflate_slow},
 {8,   32, 128, 256, deflate_slow},
 {32, 128, 258, 1024, deflate_slow},
 {32, 258, 258, 4096, deflate_slow}}

Definition at line 131 of file deflate.c.

const char deflate_copyright[]

Initial value:

=
   " deflate 1.2.7 Copyright 1995-2012 Jean-loup Gailly and Mark Adler "

Definition at line 54 of file deflate.c.