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-rw-r--r--libpng/deflate.c92
1 files changed, 24 insertions, 68 deletions
diff --git a/libpng/deflate.c b/libpng/deflate.c
index 25d5818..bb39139 100644
--- a/libpng/deflate.c
+++ b/libpng/deflate.c
@@ -1,5 +1,5 @@
/* deflate.c -- compress data using the deflation algorithm
- * Copyright (C) 1995-1998 Jean-loup Gailly.
+ * Copyright (C) 1995-2002 Jean-loup Gailly.
* For conditions of distribution and use, see copyright notice in zlib.h
*/
@@ -52,7 +52,7 @@
#include "deflate.h"
const char deflate_copyright[] =
- " deflate 1.1.3 Copyright 1995-1998 Jean-loup Gailly ";
+ " deflate 1.1.4 Copyright 1995-2002 Jean-loup Gailly ";
/*
If you use the zlib library in a product, an acknowledgment is welcome
in the documentation of your product. If for some reason you cannot
@@ -187,11 +187,7 @@ struct static_tree_desc_s {int dummy;}; /* for buggy compilers */
zmemzero((Bytef *)s->head, (unsigned)(s->hash_size-1)*sizeof(*s->head));
/* ========================================================================= */
-int ZEXPORT deflateInit_(strm, level, version, stream_size)
- z_streamp strm;
- int level;
- const char *version;
- int stream_size;
+int ZEXPORT deflateInit_(z_streamp strm, int level, const char *version, int stream_size)
{
return deflateInit2_(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL,
Z_DEFAULT_STRATEGY, version, stream_size);
@@ -199,16 +195,7 @@ int ZEXPORT deflateInit_(strm, level, version, stream_size)
}
/* ========================================================================= */
-int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
- version, stream_size)
- z_streamp strm;
- int level;
- int method;
- int windowBits;
- int memLevel;
- int strategy;
- 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)
{
deflate_state *s;
int noheader = 0;
@@ -242,7 +229,7 @@ int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
windowBits = -windowBits;
}
if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method != Z_DEFLATED ||
- windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
+ windowBits < 9 || windowBits > 15 || level < 0 || level > 9 ||
strategy < 0 || strategy > Z_HUFFMAN_ONLY) {
return Z_STREAM_ERROR;
}
@@ -288,10 +275,7 @@ int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
}
/* ========================================================================= */
-int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
- z_streamp strm;
- const Bytef *dictionary;
- uInt dictLength;
+int ZEXPORT deflateSetDictionary (z_streamp strm, const Bytef *dictionary, uInt dictLength)
{
deflate_state *s;
uInt length = dictLength;
@@ -329,8 +313,7 @@ int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
}
/* ========================================================================= */
-int ZEXPORT deflateReset (strm)
- z_streamp strm;
+int ZEXPORT deflateReset (z_streamp strm)
{
deflate_state *s;
@@ -359,10 +342,7 @@ int ZEXPORT deflateReset (strm)
}
/* ========================================================================= */
-int ZEXPORT deflateParams(strm, level, strategy)
- z_streamp strm;
- int level;
- int strategy;
+int ZEXPORT deflateParams(z_streamp strm, int level, int strategy)
{
deflate_state *s;
compress_func func;
@@ -399,9 +379,7 @@ int ZEXPORT deflateParams(strm, level, strategy)
* IN assertion: the stream state is correct and there is enough room in
* pending_buf.
*/
-local void putShortMSB (s, b)
- deflate_state *s;
- uInt b;
+local void putShortMSB (deflate_state *s, uInt b)
{
put_byte(s, (Byte)(b >> 8));
put_byte(s, (Byte)(b & 0xff));
@@ -413,8 +391,7 @@ local void putShortMSB (s, b)
* to avoid allocating a large strm->next_out buffer and copying into it.
* (See also read_buf()).
*/
-local void flush_pending(strm)
- z_streamp strm;
+local void flush_pending(z_streamp strm)
{
unsigned len = strm->state->pending;
@@ -433,9 +410,7 @@ local void flush_pending(strm)
}
/* ========================================================================= */
-int ZEXPORT deflate (strm, flush)
- z_streamp strm;
- int flush;
+int ZEXPORT deflate (z_streamp strm, int flush)
{
int old_flush; /* value of flush param for previous deflate call */
deflate_state *s;
@@ -567,8 +542,7 @@ int ZEXPORT deflate (strm, flush)
}
/* ========================================================================= */
-int ZEXPORT deflateEnd (strm)
- z_streamp strm;
+int ZEXPORT deflateEnd (z_streamp strm)
{
int status;
@@ -597,9 +571,7 @@ int ZEXPORT deflateEnd (strm)
* To simplify the source, this is not supported for 16-bit MSDOS (which
* doesn't have enough memory anyway to duplicate compression states).
*/
-int ZEXPORT deflateCopy (dest, source)
- z_streamp dest;
- z_streamp source;
+int ZEXPORT deflateCopy (z_streamp dest, z_streamp source)
{
#ifdef MAXSEG_64K
return Z_STREAM_ERROR;
@@ -659,10 +631,7 @@ int ZEXPORT deflateCopy (dest, source)
* allocating a large strm->next_in buffer and copying from it.
* (See also flush_pending()).
*/
-local int read_buf(strm, buf, size)
- z_streamp strm;
- Bytef *buf;
- unsigned size;
+local int read_buf(z_streamp strm, Bytef *buf, unsigned int size)
{
unsigned len = strm->avail_in;
@@ -684,8 +653,7 @@ local int read_buf(strm, buf, size)
/* ===========================================================================
* Initialize the "longest match" routines for a new zlib stream
*/
-local void lm_init (s)
- deflate_state *s;
+local void lm_init (deflate_state *s)
{
s->window_size = (ulg)2L*s->w_size;
@@ -723,9 +691,9 @@ local void lm_init (s)
* match.S. The code will be functionally equivalent.
*/
#ifndef FASTEST
-local uInt longest_match(s, cur_match)
- deflate_state *s;
- IPos cur_match; /* current match */
+local uInt longest_match(deflate_state *s, IPos cur_match)
+
+ /* current match */
{
unsigned chain_length = s->max_chain_length;/* max hash chain length */
register Bytef *scan = s->window + s->strstart; /* current string */
@@ -865,9 +833,7 @@ local uInt longest_match(s, cur_match)
/* ---------------------------------------------------------------------------
* Optimized version for level == 1 only
*/
-local uInt longest_match(s, cur_match)
- deflate_state *s;
- IPos cur_match; /* current match */
+local uInt longest_match(deflate_state *s, IPos cur_match)
{
register Bytef *scan = s->window + s->strstart; /* current string */
register Bytef *match; /* matched string */
@@ -924,10 +890,7 @@ local uInt longest_match(s, cur_match)
/* ===========================================================================
* Check that the match at match_start is indeed a match.
*/
-local void check_match(s, start, match, length)
- deflate_state *s;
- IPos start, match;
- int length;
+local void check_match(default_state *s, IPos start, IPos match, int length)
{
/* check that the match is indeed a match */
if (zmemcmp(s->window + match,
@@ -958,8 +921,7 @@ local void check_match(s, start, match, length)
* performed for at least two bytes (required for the zip translate_eol
* option -- not supported here).
*/
-local void fill_window(s)
- deflate_state *s;
+local void fill_window(deflate_state *s)
{
register unsigned n, m;
register Posf *p;
@@ -1078,9 +1040,7 @@ local void fill_window(s)
* NOTE: this function should be optimized to avoid extra copying from
* window to pending_buf.
*/
-local block_state deflate_stored(s, flush)
- deflate_state *s;
- int flush;
+local block_state deflate_stored(deflate_state *s, int flush)
{
/* Stored blocks are limited to 0xffff bytes, pending_buf is limited
* to pending_buf_size, and each stored block has a 5 byte header:
@@ -1136,9 +1096,7 @@ local block_state deflate_stored(s, flush)
* new strings in the dictionary only for unmatched strings or for short
* matches. It is used only for the fast compression options.
*/
-local block_state deflate_fast(s, flush)
- deflate_state *s;
- int flush;
+local block_state deflate_fast(deflate_state *s, int flush)
{
IPos hash_head = NIL; /* head of the hash chain */
int bflush; /* set if current block must be flushed */
@@ -1232,9 +1190,7 @@ local block_state deflate_fast(s, flush)
* evaluation for matches: a match is finally adopted only if there is
* no better match at the next window position.
*/
-local block_state deflate_slow(s, flush)
- deflate_state *s;
- int flush;
+local block_state deflate_slow(deflate_state *s, int flush)
{
IPos hash_head = NIL; /* head of hash chain */
int bflush; /* set if current block must be flushed */
generated by cgit v0.12 at 2024-07-03 06:29:22 (GMT)