#include "deflate.h"

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

#define	CLEAR_HASH(s)

#define	EQUAL 0

#define	FLUSH_BLOCK(s, last)

#define	FLUSH_BLOCK_ONLY(s, last)

#define	INSERT_STRING(s, str, match_head)

#define	NIL 0

#define	TOO_FAR 4096

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

Typedefs
typedef struct config_s	config

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

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

Functions
int ZEXPORT	deflate (z_streamp strm, int flush)

local block_state	deflate_fast (deflate_state *s, int flush)

local block_state	deflate_huff (deflate_state *s, int flush)

local block_state	deflate_rle (deflate_state *s, int flush)

local block_state	deflate_slow (deflate_state *s, int flush)

local block_state	deflate_stored (deflate_state *s, int flush)

uLong ZEXPORT	deflateBound (z_streamp strm, uLong sourceLen)

int ZEXPORT	deflateCopy (z_streamp dest, z_streamp source)

int ZEXPORT	deflateEnd (z_streamp strm)

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

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

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

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

int ZEXPORT	deflateReset (z_streamp strm)

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

int ZEXPORT	deflateSetHeader (z_streamp strm, gz_headerp head)

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

local void	fill_window (deflate_state *s)

local void	flush_pending (z_streamp strm)

local void	lm_init (deflate_state *s)

local uInt	longest_match (deflate_state *s, IPos cur_match)

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)

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

Variables
local const config	configuration_table [10]

const char	deflate_copyright []

Macro Definition Documentation

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

Definition at line 1292 of file deflate.c.

Referenced by deflate_fast(), deflate_rle(), and deflate_slow().

#define CLEAR_HASH ( s )

Value:

s->head[s->hash_size-1] = NIL; \

zmemzero((Bytef *)s->head, (unsigned)(s->hash_size-1)*sizeof(*s->head));

s

GLdouble s

Definition: glew.h:1376

zmemzero

void zmemzero(Bytef *dest, uInt len)

Definition: zutil.c:41

Bytef

Byte FAR Bytef

Definition: zconf.h:228

NIL

#define NIL

Definition: deflate.c:104

Definition at line 193 of file deflate.c.

Referenced by deflate(), and lm_init().

#define EQUAL 0

Definition at line 151 of file deflate.c.

Referenced by while().

#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 1448 of file deflate.c.

Referenced by deflate_fast(), deflate_huff(), deflate_rle(), deflate_slow(), and deflate_stored().

#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 1436 of file deflate.c.

Referenced by deflate_slow().

#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 183 of file deflate.c.

Referenced by deflate_fast(), deflate_slow(), and deflateSetDictionary().

#define NIL 0

Definition at line 104 of file deflate.c.

Referenced by deflate_fast(), deflate_slow(), fill_window(), and longest_match().

#define TOO_FAR 4096

Definition at line 108 of file deflate.c.

Referenced by deflate_slow().

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

Definition at line 164 of file deflate.c.

Referenced by deflate_fast(), deflateSetDictionary(), and fill_window().

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 582 of file deflate.c.

References _tr_align(), _tr_stored_block(), adler32(), Assert, block_done, BUSY_STATE, CLEAR_HASH, COMMENT_STATE, crc32(), deflate_huff(), deflate_rle(), ERR_RETURN, EXTRA_STATE, finish_done, finish_started, FINISH_STATE, flush, flush_pending(), HCRC_STATE, header(), INIT_STATE, NAME_STATE, need_more, OS_CODE, PRESET_DICT, put_byte, putShortMSB(), Z_BLOCK, Z_BUF_ERROR, Z_DEFLATED, Z_FINISH, Z_FULL_FLUSH, Z_HUFFMAN_ONLY, Z_NO_FLUSH, Z_NULL, Z_OK, Z_PARTIAL_FLUSH, Z_RLE, Z_STREAM_END, and Z_STREAM_ERROR.

Referenced by compress2(), deflateParams(), do_flush(), gz_comp(), gzwrite(), png_text_compress(), png_write_filtered_row(), png_write_finish_row(), png_write_flush(), test_deflate(), test_dict_deflate(), test_flush(), and test_large_deflate().

local block_state deflate_fast	(	deflate_state *	s,
		int	flush
	)

Definition at line 1520 of file deflate.c.

References _tr_tally_dist, _tr_tally_lit, block_done, check_match, fill_window(), finish_done, FLUSH_BLOCK, INSERT_STRING, longest_match(), MAX_DIST, MIN_LOOKAHEAD, MIN_MATCH, need_more, NIL, Tracevv, UPDATE_HASH, Z_FINISH, and Z_NO_FLUSH.

local block_state deflate_huff	(	deflate_state *	s,
		int	flush
	)

Definition at line 1807 of file deflate.c.

References _tr_tally_lit, block_done, fill_window(), finish_done, FLUSH_BLOCK, need_more, Tracevv, Z_FINISH, and Z_NO_FLUSH.

Referenced by deflate().

local block_state deflate_rle	(	deflate_state *	s,
		int	flush
	)

Definition at line 1741 of file deflate.c.

References _tr_tally_dist, _tr_tally_lit, block_done, check_match, fill_window(), finish_done, FLUSH_BLOCK, int, MAX_MATCH, MIN_MATCH, need_more, Tracevv, Z_FINISH, and Z_NO_FLUSH.

Referenced by deflate().

local block_state deflate_slow	(	deflate_state *	s,
		int	flush
	)

Definition at line 1616 of file deflate.c.

References _tr_tally_dist, _tr_tally_lit, Assert, block_done, check_match, fill_window(), finish_done, FLUSH_BLOCK, FLUSH_BLOCK_ONLY, INSERT_STRING, longest_match(), MAX_DIST, MIN_LOOKAHEAD, MIN_MATCH, need_more, NIL, TOO_FAR, Tracevv, Z_FILTERED, Z_FINISH, and Z_NO_FLUSH.

local block_state deflate_stored	(	deflate_state *	s,
		int	flush
	)

Definition at line 1462 of file deflate.c.

References Assert, block_done, fill_window(), finish_done, FLUSH_BLOCK, MAX_DIST, need_more, Z_FINISH, and Z_NO_FLUSH.

uLong ZEXPORT deflateBound	(	z_streamp	strm,
		uLong	sourceLen
	)

Definition at line 486 of file deflate.c.

References str, and Z_NULL.

int ZEXPORT deflateCopy	(	z_streamp	dest,
		z_streamp	source
	)

Definition at line 930 of file deflate.c.

References deflateEnd(), Z_MEM_ERROR, Z_NULL, Z_OK, Z_STREAM_ERROR, ZALLOC, and zmemcpy().

int ZEXPORT deflateEnd ( z_streamp strm )

Definition at line 895 of file deflate.c.

References BUSY_STATE, COMMENT_STATE, EXTRA_STATE, FINISH_STATE, HCRC_STATE, INIT_STATE, NAME_STATE, TRY_FREE, Z_DATA_ERROR, Z_NULL, Z_OK, Z_STREAM_ERROR, and ZFREE.

Referenced by compress2(), deflateCopy(), deflateInit2_(), destroy(), gzclose_w(), png_write_destroy(), png_zlib_claim(), test_deflate(), test_dict_deflate(), test_flush(), and test_large_deflate().

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 210 of file deflate.c.

References deflateEnd(), deflateReset(), ERR_MSG, FINISH_STATE, if(), MAX_MEM_LEVEL, MIN_MATCH, windowBits, Z_DEFAULT_COMPRESSION, Z_DEFLATED, Z_FIXED, Z_MEM_ERROR, Z_NULL, Z_STREAM_ERROR, Z_VERSION_ERROR, ZALLOC, zcalloc(), zcfree(), and ZLIB_VERSION.

Referenced by deflateInit_().

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

Definition at line 198 of file deflate.c.

References DEF_MEM_LEVEL, deflateInit2_(), MAX_WBITS, Z_DEFAULT_STRATEGY, and Z_DEFLATED.

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

Definition at line 412 of file deflate.c.

References deflate(), Z_BLOCK, Z_DEFAULT_COMPRESSION, Z_FIXED, Z_NULL, Z_OK, and Z_STREAM_ERROR.

Referenced by gzsetparams(), and test_large_deflate().

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

Definition at line 400 of file deflate.c.

References bits, Z_NULL, Z_OK, and Z_STREAM_ERROR.

int ZEXPORT deflateReset ( z_streamp strm )

Definition at line 353 of file deflate.c.

References _tr_init(), adler32(), BUSY_STATE, crc32(), if(), INIT_STATE, lm_init(), Z_NO_FLUSH, Z_NULL, Z_OK, Z_STREAM_ERROR, and Z_UNKNOWN.

Referenced by deflateInit2_(), gz_comp(), and png_zlib_release().

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

Definition at line 311 of file deflate.c.

References adler32(), INIT_STATE, INSERT_STRING, MIN_MATCH, UPDATE_HASH, Z_NULL, Z_OK, Z_STREAM_ERROR, and zmemcpy().

Referenced by test_dict_deflate().

int ZEXPORT deflateSetHeader	(	z_streamp	strm,
		gz_headerp	head
	)

Definition at line 389 of file deflate.c.

References head, Z_NULL, Z_OK, and Z_STREAM_ERROR.

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

Definition at line 451 of file deflate.c.

References Z_NULL, Z_OK, and Z_STREAM_ERROR.

local void fill_window ( deflate_state * s )

Definition at line 1305 of file deflate.c.

References Assert, if(), init(), m, MAX_DIST, MIN_LOOKAHEAD, MIN_MATCH, NIL, read_buf(), UPDATE_HASH, WIN_INIT, zmemcpy(), and zmemzero().

Referenced by deflate_fast(), deflate_huff(), deflate_rle(), deflate_slow(), and deflate_stored().

local void flush_pending ( z_streamp strm )

Definition at line 562 of file deflate.c.

References zmemcpy().

Referenced by deflate().

local void lm_init ( deflate_state * s )

Definition at line 1022 of file deflate.c.

References CLEAR_HASH, and MIN_MATCH.

Referenced by deflateReset().

local uInt longest_match	(	deflate_state *	s,
		IPos	cur_match
	)

Definition at line 1063 of file deflate.c.

References Assert, int, MAX_DIST, MAX_MATCH, MIN_LOOKAHEAD, and NIL.

Referenced by deflate_fast(), and deflate_slow().

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 548 of file deflate.c.

References put_byte.

Referenced by deflate().

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

Definition at line 992 of file deflate.c.

References adler32(), crc32(), and zmemcpy().

Referenced by fill_window().

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:

=

Definition at line 54 of file deflate.c.

Macros

Typedefs

Enumerations

Functions

Variables

Macro Definition Documentation

Typedef Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation