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zlib 1.2.0.4

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This commit is contained in:
Mark Adler
2011-09-09 23:22:30 -07:00
parent 85e7d7d9ba
commit 086e982175
20 changed files with 335 additions and 92 deletions
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20
zlib.h
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@@ -1,5 +1,5 @@
/* zlib.h -- interface of the 'zlib' general purpose compression library
version 1.2.0.3, July 19th, 2003
version 1.2.0.4, August 10th, 2003
Copyright (C) 1995-2003 Jean-loup Gailly and Mark Adler
@@ -37,8 +37,8 @@
extern "C" {
#endif
#define ZLIB_VERSION "1.2.0.3"
#define ZLIB_VERNUM 0x1203
#define ZLIB_VERSION "1.2.0.4"
#define ZLIB_VERNUM 0x1204
/*
The 'zlib' compression library provides in-memory compression and
@@ -446,15 +446,21 @@ ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
this version of the library.
The windowBits parameter is the base two logarithm of the window size
(the size of the history buffer). It should be in the range 8..15 for this
(the size of the history buffer). It should be in the range 8..15 for this
version of the library. Larger values of this parameter result in better
compression at the expense of memory usage. The default value is 15 if
deflateInit is used instead.
windowBits can also be -8..-15 for raw deflate. In this case, -windowBits
windowBits can also be -8..-15 for raw deflate. In this case, -windowBits
determines the window size. deflate() will then generate raw deflate data
with no zlib header or trailer, and will not compute an adler32 check value.
windowBits can also be greater than 15 for optional gzip encoding. Add
16 to windowBits to write a simple gzip header and trailer around the
compressed data instead of a zlib wrapper. The gzip header will have no
file name, no extra data, no comment, no modification time (set to zero),
no header crc, and the operating system will be set to 255 (unknown).
The memLevel parameter specifies how much memory should be allocated
for the internal compression state. memLevel=1 uses minimum memory but
is slow and reduces compression ratio; memLevel=9 uses maximum memory
@@ -801,8 +807,8 @@ ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void));
Library content (indicates missing functionality):
16: NO_DEFLATE -- gz* functions cannot compress (to avoid linking deflate
code when not needed)
17: NO_GUNZIP -- inflate can't detect and decode gzip streams, to avoid
linking crc code
17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect
and decode gzip streams (to avoid linking crc code)
18-19: 0 (reserved)
Operation variations (changes in library functionality):