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;