9 ZLIB_VERSION
= '1.1.3';
18 alloc_func
= function(opaque
: voidpf
; items
, size
: uInt
): voidpf
;
20 free_func
= procedure(opaque
, address
: voidpf
);
23 internal_state
= Pointer;
25 z_streamp
= ^z_stream
;
26 z_stream
= packed record
27 next_in
: pBytef
; // next input byte
28 avail_in
: uInt
; // number of bytes available at next_in
29 total_in
: uLong
; // total nb of input bytes read so far
31 next_out
: pBytef
; // next output byte should be put there
32 avail_out
: uInt
; // remaining free space at next_out
33 total_out
: uLong
; // total nb of bytes output so far
35 msg
: PChar
; // last error message, NULL if no error
36 state
: internal_state
; // not visible by applications
38 zalloc
: alloc_func
; // used to allocate the internal state
39 zfree
: free_func
; // used to free the internal state
40 opaque
: voidpf
; // private data object passed to zalloc and zfree
42 data_type
: int
; // best guess about the data type: ascii or binary
43 adler
: uLong
; // adler32 value of the uncompressed data
44 reserved
: uLong
; // reserved for future use
58 Z_BEST_COMPRESSION
= 9;
59 Z_DEFAULT_COMPRESSION
= -1;
63 Z_DEFAULT_STRATEGY
= 0;
73 function adler32(adler
: uLong
; const buf
: pBytef
; len
: uInt
): uLong
;
75 function crc32(crc
: uLong
; const buf
: pBytef
; len
: uInt
): uLong
;
77 function deflate(strm
: z_streamp
; flush
: int
): int
;
79 function deflateCopy(dest
, source
: z_streamp
): int
;
81 function deflateEnd(strm
: z_streamp
): int
;
83 function deflateInit2_(strm
: z_streamp
; level
, method
,
84 windowBits
, memLevel
, strategy
: int
;
85 const version
: PChar
; stream_size
: int
): int
;
87 function deflateInit_(strm
: z_streamp
; level
: int
;
88 const version
: PChar
; stream_size
: int
): int
;
90 function deflateParams(strm
: z_streamp
; level
, strategy
: int
): int
;
92 function deflateReset(strm
: z_streamp
): int
;
94 function deflateSetDictionary(strm
: z_streamp
;
95 const dictionary
: pBytef
;
96 dictLength
: uInt
): int
;
98 function inflate(strm
: z_streamp
; flush
: int
): int
;
100 function inflateEnd(strm
: z_streamp
): int
;
102 function inflateInit2_(strm
: z_streamp
; windowBits
: int
;
103 const version
: PChar
; stream_size
: int
): int
;
105 function inflateInit_(strm
: z_streamp
; const version
: PChar
;
106 stream_size
: int
): int
;
108 function inflateReset(strm
: z_streamp
): int
;
110 function inflateSetDictionary(strm
: z_streamp
;
111 const dictionary
: pBytef
;
112 dictLength
: uInt
): int
;
114 function inflateSync(strm
: z_streamp
): int
;
117 function deflateInit(strm
: z_streamp
; level
: int
): int
;
118 function deflateInit2(strm
: z_streamp
; level
, method
, windowBits
,
119 memLevel
, strategy
: int
): int
;
120 function inflateInit(strm
: z_streamp
): int
;
121 function inflateInit2(strm
: z_streamp
; windowBits
: int
): int
;
125 function deflateInit(strm
: z_streamp
; level
: int
): int
;
127 Result
:= deflateInit_(strm
, level
, ZLIB_VERSION
, sizeof(z_stream
));
130 function deflateInit2(strm
: z_streamp
; level
, method
, windowBits
,
131 memLevel
, strategy
: int
): int
;
133 Result
:= deflateInit2_(strm
, level
, method
, windowBits
, memLevel
,
134 strategy
, ZLIB_VERSION
, sizeof(z_stream
));
137 function inflateInit(strm
: z_streamp
): int
;
139 Result
:= inflateInit_(strm
, ZLIB_VERSION
, sizeof(z_stream
));
142 function inflateInit2(strm
: z_streamp
; windowBits
: int
): int
;
144 Result
:= inflateInit2_(strm
, windowBits
, ZLIB_VERSION
,
149 zlibDLL
= 'png32bd.dll';
151 function adler32
; external zlibDLL
;
152 function crc32
; external zlibDLL
;
153 function deflate
; external zlibDLL
;
154 function deflateCopy
; external zlibDLL
;
155 function deflateEnd
; external zlibDLL
;
156 function deflateInit2_
; external zlibDLL
;
157 function deflateInit_
; external zlibDLL
;
158 function deflateParams
; external zlibDLL
;
159 function deflateReset
; external zlibDLL
;
160 function deflateSetDictionary
; external zlibDLL
;
161 function inflate
; external zlibDLL
;
162 function inflateEnd
; external zlibDLL
;
163 function inflateInit2_
; external zlibDLL
;
164 function inflateInit_
; external zlibDLL
;
165 function inflateReset
; external zlibDLL
;
166 function inflateSetDictionary
; external zlibDLL
;
167 function inflateSync
; external zlibDLL
;