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Replace QuickLZ with LZ4.

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git-svn-id: https://svn.eduke32.com/eduke32@4316 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
hendricks266 2014-02-10 10:55:49 +00:00
parent 8db0c9c729
commit 7deb709ab6
17 changed files with 1168 additions and 1058 deletions
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2
polymer/eduke32/Makefile.deps
View file

@ -78,7 +78,7 @@ $(OBJ)/astub.$o: $(SRC)/astub.c \
$(EINC)/cache1d.h \
$(EINC)/crc32.h \
$(EINC)/scriptfile.h \
$(EINC)/quicklz.h \
$(EINC)/lz4.h \
$(SRC)/macros.h \
$(SRC)/osdfuncs.h \
$(SRC)/names.h \

2
polymer/eduke32/build/Makefile
View file

@ -73,7 +73,7 @@ ENGINEOBJS+= \
$(OBJ)/textfont.$o \
$(OBJ)/smalltextfont.$o \
$(OBJ)/kplib.$o \
$(OBJ)/quicklz.$o \
$(OBJ)/lz4.$o \
$(OBJ)/osd.$o \
$(OBJ)/pragmas.$o \
$(OBJ)/scriptfile.$o \

4
polymer/eduke32/build/Makefile.deps
View file

@ -10,7 +10,7 @@ $(OBJ)/config.$o: $(SRC)/config.c $(INC)/compat.h $(INC)/osd.h $(INC)/editor.h
$(OBJ)/crc32.$o: $(SRC)/crc32.c $(INC)/crc32.h
$(OBJ)/defs.$o: $(SRC)/defs.c $(INC)/build.h $(INC)/baselayer.h $(INC)/scriptfile.h $(INC)/compat.h
$(OBJ)/engine.$o: $(SRC)/engine.c $(INC)/compat.h $(INC)/build.h $(INC)/pragmas.h $(INC)/cache1d.h $(INC)/a.h $(INC)/osd.h $(INC)/baselayer.h $(SRC)/engine_priv.h $(SRC)/engine_oldmap.h $(INC)/polymost.h $(INC)/hightile.h $(INC)/mdsprite.h $(INC)/polymer.h
$(OBJ)/polymost.$o: $(SRC)/polymost.c $(INC)/quicklz.h $(INC)/lzwnew.h $(INC)/compat.h $(INC)/build.h $(SRC)/engine_priv.h $(INC)/polymost.h $(INC)/hightile.h $(INC)/mdsprite.h $(INC)/texcache.h
$(OBJ)/polymost.$o: $(SRC)/polymost.c $(INC)/lz4.h $(INC)/lzwnew.h $(INC)/compat.h $(INC)/build.h $(SRC)/engine_priv.h $(INC)/polymost.h $(INC)/hightile.h $(INC)/mdsprite.h $(INC)/texcache.h
$(OBJ)/texcache.$o: $(SRC)/texcache.c $(INC)/texcache.h $(INC)/polymost.h $(INC)/dxtfilter.h
$(OBJ)/dxtfilter.$o: $(SRC)/dxtfilter.c $(INC)/dxtfilter.h $(INC)/texcache.h
$(OBJ)/hightile.$o: $(SRC)/hightile.c $(INC)/kplib.h $(INC)/hightile.h
@ -19,7 +19,7 @@ $(OBJ)/textfont.$o: $(SRC)/textfont.c
$(OBJ)/smalltextfont.$o: $(SRC)/smalltextfont.c
$(OBJ)/glbuild.$o: $(SRC)/glbuild.c $(INC)/glbuild.h $(INC)/baselayer.h
$(OBJ)/kplib.$o: $(SRC)/kplib.c $(INC)/compat.h
$(OBJ)/quicklz.$o: $(SRC)/quicklz.c $(INC)/quicklz.h
$(OBJ)/lz4.$o: $(SRC)/lz4.c $(INC)/lz4.h
$(OBJ)/lzwnew.$o: $(SRC)/lzwnew.c
$(OBJ)/osd.$o: $(SRC)/osd.c $(INC)/build.h $(INC)/osd.h $(INC)/compat.h $(INC)/baselayer.h
$(OBJ)/pragmas.$o: $(SRC)/pragmas.c $(INC)/compat.h

2
polymer/eduke32/build/Makefile.msvc
View file

@ -75,7 +75,7 @@ ENGINEOBJS= \
$(OBJ)\smalltextfont.$o \
$(OBJ)\glbuild.$o \
$(OBJ)\kplib.$o \
$(OBJ)\quicklz.$o \
$(OBJ)\lz4.$o \
$(OBJ)\lzwnew.$o \
$(OBJ)\osd.$o \
$(OBJ)\pragmas.$o \

251
polymer/eduke32/build/include/lz4.h Normal file
View file

@ -0,0 +1,251 @@
/*
LZ4 - Fast LZ compression algorithm
Header File
Copyright (C) 2011-2013, Yann Collet.
BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
You can contact the author at :
- LZ4 homepage : http://fastcompression.blogspot.com/p/lz4.html
- LZ4 source repository : http://code.google.com/p/lz4/
*/
#pragma once
#if defined (__cplusplus)
extern "C" {
#endif
/**************************************
Version
**************************************/
#define LZ4_VERSION_MAJOR 1 /* for major interface/format changes */
#define LZ4_VERSION_MINOR 1 /* for minor interface/format changes */
#define LZ4_VERSION_RELEASE 3 /* for tweaks, bug-fixes, or development */
/**************************************
Compiler Options
**************************************/
#if (defined(__GNUC__) && defined(__STRICT_ANSI__)) || (defined(_MSC_VER) && !defined(__cplusplus)) /* Visual Studio */
# define inline __inline /* Visual C is not C99, but supports some kind of inline */
#endif
/**************************************
Simple Functions
**************************************/
int LZ4_compress (const char* source, char* dest, int inputSize);
int LZ4_decompress_safe (const char* source, char* dest, int inputSize, int maxOutputSize);
/*
LZ4_compress() :
Compresses 'inputSize' bytes from 'source' into 'dest'.
Destination buffer must be already allocated,
and must be sized to handle worst cases situations (input data not compressible)
Worst case size evaluation is provided by function LZ4_compressBound()
inputSize : Max supported value is LZ4_MAX_INPUT_VALUE
return : the number of bytes written in buffer dest
or 0 if the compression fails
LZ4_decompress_safe() :
maxOutputSize : is the size of the destination buffer (which must be already allocated)
return : the number of bytes decoded in the destination buffer (necessarily <= maxOutputSize)
If the source stream is detected malformed, the function will stop decoding and return a negative result.
This function is protected against buffer overflow exploits (never writes outside of output buffer, and never reads outside of input buffer). Therefore, it is protected against malicious data packets
*/
/**************************************
Advanced Functions
**************************************/
#define LZ4_MAX_INPUT_SIZE 0x7E000000 /* 2 113 929 216 bytes */
#define LZ4_COMPRESSBOUND(isize) ((unsigned int)(isize) > (unsigned int)LZ4_MAX_INPUT_SIZE ? 0 : (isize) + ((isize)/255) + 16)
static inline int LZ4_compressBound(int isize) { return LZ4_COMPRESSBOUND(isize); }
/*
LZ4_compressBound() :
Provides the maximum size that LZ4 may output in a "worst case" scenario (input data not compressible)
primarily useful for memory allocation of output buffer.
inline function is recommended for the general case,
macro is also provided when result needs to be evaluated at compilation (such as stack memory allocation).
isize : is the input size. Max supported value is LZ4_MAX_INPUT_SIZE
return : maximum output size in a "worst case" scenario
or 0, if input size is too large ( > LZ4_MAX_INPUT_SIZE)
*/
int LZ4_compress_limitedOutput (const char* source, char* dest, int inputSize, int maxOutputSize);
/*
LZ4_compress_limitedOutput() :
Compress 'inputSize' bytes from 'source' into an output buffer 'dest' of maximum size 'maxOutputSize'.
If it cannot achieve it, compression will stop, and result of the function will be zero.
This function never writes outside of provided output buffer.
inputSize : Max supported value is LZ4_MAX_INPUT_VALUE
maxOutputSize : is the size of the destination buffer (which must be already allocated)
return : the number of bytes written in buffer 'dest'
or 0 if the compression fails
*/
int LZ4_decompress_fast (const char* source, char* dest, int outputSize);
/*
LZ4_decompress_fast() :
outputSize : is the original (uncompressed) size
return : the number of bytes read from the source buffer (in other words, the compressed size)
If the source stream is malformed, the function will stop decoding and return a negative result.
note : This function is a bit faster than LZ4_decompress_safe()
This function never writes outside of output buffers, but may read beyond input buffer in case of malicious data packet.
Use this function preferably into a trusted environment (data to decode comes from a trusted source).
Destination buffer must be already allocated. Its size must be a minimum of 'outputSize' bytes.
*/
int LZ4_decompress_safe_partial (const char* source, char* dest, int inputSize, int targetOutputSize, int maxOutputSize);
/*
LZ4_decompress_safe_partial() :
This function decompress a compressed block of size 'inputSize' at position 'source'
into output buffer 'dest' of size 'maxOutputSize'.
The function tries to stop decompressing operation as soon as 'targetOutputSize' has been reached,
reducing decompression time.
return : the number of bytes decoded in the destination buffer (necessarily <= maxOutputSize)
Note : this number can be < 'targetOutputSize' should the compressed block to decode be smaller.
Always control how many bytes were decoded.
If the source stream is detected malformed, the function will stop decoding and return a negative result.
This function never writes outside of output buffer, and never reads outside of input buffer. It is therefore protected against malicious data packets
*/
int LZ4_sizeofState();
int LZ4_compress_withState (void* state, const char* source, char* dest, int inputSize);
int LZ4_compress_limitedOutput_withState (void* state, const char* source, char* dest, int inputSize, int maxOutputSize);
/*
These functions are provided should you prefer to allocate memory for compression tables with your own allocation methods.
To know how much memory must be allocated for the compression tables, use :
int LZ4_sizeofState();
Note that tables must be aligned on 4-bytes boundaries, otherwise compression will fail (return code 0).
The allocated memory can be provided to the compressions functions using 'void* state' parameter.
LZ4_compress_withState() and LZ4_compress_limitedOutput_withState() are equivalent to previously described functions.
They just use the externally allocated memory area instead of allocating their own (on stack, or on heap).
*/
/**************************************
Streaming Functions
**************************************/
void* LZ4_create (const char* inputBuffer);
int LZ4_compress_continue (void* LZ4_Data, const char* source, char* dest, int inputSize);
int LZ4_compress_limitedOutput_continue (void* LZ4_Data, const char* source, char* dest, int inputSize, int maxOutputSize);
char* LZ4_slideInputBuffer (void* LZ4_Data);
int LZ4_free (void* LZ4_Data);
/*
These functions allow the compression of dependent blocks, where each block benefits from prior 64 KB within preceding blocks.
In order to achieve this, it is necessary to start creating the LZ4 Data Structure, thanks to the function :
void* LZ4_create (const char* inputBuffer);
The result of the function is the (void*) pointer on the LZ4 Data Structure.
This pointer will be needed in all other functions.
If the pointer returned is NULL, then the allocation has failed, and compression must be aborted.
The only parameter 'const char* inputBuffer' must, obviously, point at the beginning of input buffer.
The input buffer must be already allocated, and size at least 192KB.
'inputBuffer' will also be the 'const char* source' of the first block.
All blocks are expected to lay next to each other within the input buffer, starting from 'inputBuffer'.
To compress each block, use either LZ4_compress_continue() or LZ4_compress_limitedOutput_continue().
Their behavior are identical to LZ4_compress() or LZ4_compress_limitedOutput(),
but require the LZ4 Data Structure as their first argument, and check that each block starts right after the previous one.
If next block does not begin immediately after the previous one, the compression will fail (return 0).
When it's no longer possible to lay the next block after the previous one (not enough space left into input buffer), a call to :
char* LZ4_slideInputBuffer(void* LZ4_Data);
must be performed. It will typically copy the latest 64KB of input at the beginning of input buffer.
Note that, for this function to work properly, minimum size of an input buffer must be 192KB.
==> The memory position where the next input data block must start is provided as the result of the function.
Compression can then resume, using LZ4_compress_continue() or LZ4_compress_limitedOutput_continue(), as usual.
When compression is completed, a call to LZ4_free() will release the memory used by the LZ4 Data Structure.
*/
int LZ4_sizeofStreamState();
int LZ4_resetStreamState(void* state, const char* inputBuffer);
/*
These functions achieve the same result as :
void* LZ4_create (const char* inputBuffer);
They are provided here to allow the user program to allocate memory using its own routines.
To know how much space must be allocated, use LZ4_sizeofStreamState();
Note also that space must be 4-bytes aligned.
Once space is allocated, you must initialize it using : LZ4_resetStreamState(void* state, const char* inputBuffer);
void* state is a pointer to the space allocated.
It must be aligned on 4-bytes boundaries, and be large enough.
The parameter 'const char* inputBuffer' must, obviously, point at the beginning of input buffer.
The input buffer must be already allocated, and size at least 192KB.
'inputBuffer' will also be the 'const char* source' of the first block.
The same space can be re-used multiple times, just by initializing it each time with LZ4_resetStreamState().
return value of LZ4_resetStreamState() must be 0 is OK.
Any other value means there was an error (typically, pointer is not aligned on 4-bytes boundaries).
*/
int LZ4_decompress_safe_withPrefix64k (const char* source, char* dest, int inputSize, int maxOutputSize);
int LZ4_decompress_fast_withPrefix64k (const char* source, char* dest, int outputSize);
/*
*_withPrefix64k() :
These decoding functions work the same as their "normal name" versions,
but can use up to 64KB of data in front of 'char* dest'.
These functions are necessary to decode inter-dependant blocks.
*/
/**************************************
Obsolete Functions
**************************************/
/*
These functions are deprecated and should no longer be used.
They are provided here for compatibility with existing user programs.
*/
static inline int LZ4_uncompress (const char* source, char* dest, int outputSize) { return LZ4_decompress_fast(source, dest, outputSize); }
static inline int LZ4_uncompress_unknownOutputSize (const char* source, char* dest, int isize, int maxOutputSize) { return LZ4_decompress_safe(source, dest, isize, maxOutputSize); }
#if defined (__cplusplus)
}
#endif

144
polymer/eduke32/build/include/quicklz.h
View file

@ -1,144 +0,0 @@
#ifndef QLZ_HEADER
#define QLZ_HEADER
// Fast data compression library
// Copyright (C) 2006-2011 Lasse Mikkel Reinhold
// lar@quicklz.com
//
// QuickLZ can be used for free under the GPL 1, 2 or 3 license (where anything
// released into public must be open source) or under a commercial license if such
// has been acquired (see http://www.quicklz.com/order.html). The commercial license
// does not cover derived or ported versions created by third parties under GPL.
// You can edit following user settings. Data must be decompressed with the same
// setting of QLZ_COMPRESSION_LEVEL and QLZ_STREAMING_BUFFER as it was compressed
// (see manual). First #ifndef makes it possible to define settings from
// the outside like the compiler command line.
// 1.5.1 BETA 7
#ifndef QLZ_COMPRESSION_LEVEL
//#define QLZ_COMPRESSION_LEVEL 1
#define QLZ_COMPRESSION_LEVEL 2
//#define QLZ_COMPRESSION_LEVEL 3
#define QLZ_STREAMING_BUFFER 0
//#define QLZ_STREAMING_BUFFER 100000
//#define QLZ_STREAMING_BUFFER 1000000
//#define QLZ_MEMORY_SAFE
#endif
#define QLZ_VERSION_MAJOR 1
#define QLZ_VERSION_MINOR 5
#define QLZ_VERSION_REVISION 1
// Using size_t, memset() and memcpy()
#include <string.h>
// Verify compression level
#if QLZ_COMPRESSION_LEVEL != 1 && QLZ_COMPRESSION_LEVEL != 2 && QLZ_COMPRESSION_LEVEL != 3
#error QLZ_COMPRESSION_LEVEL must be 1, 2 or 3
#endif
typedef unsigned int ui32;
typedef unsigned short int ui16;
// Decrease QLZ_POINTERS for level 3 to increase compression speed. Do not touch any other values!
#if QLZ_COMPRESSION_LEVEL == 1
#define QLZ_POINTERS 1
#define QLZ_HASH_VALUES 4096
#elif QLZ_COMPRESSION_LEVEL == 2
#define QLZ_POINTERS 4
#define QLZ_HASH_VALUES 2048
#elif QLZ_COMPRESSION_LEVEL == 3
#define QLZ_POINTERS 16
#define QLZ_HASH_VALUES 4096
#endif
// Detect if pointer size is 64-bit. It's not fatal if some 64-bit target is not detected because this is only for adding an optional 64-bit optimization.
#if defined _LP64 || defined __LP64__ || defined __64BIT__ || _ADDR64 || defined _WIN64 || defined __arch64__ || __WORDSIZE == 64 || (defined __sparc && defined __sparcv9) || defined __x86_64 || defined __amd64 || defined __x86_64__ || defined _M_X64 || defined _M_IA64 || defined __ia64 || defined __IA64__
#define QLZ_PTR_64
#endif
// hash entry
typedef struct
{
#if QLZ_COMPRESSION_LEVEL == 1
ui32 cache;
#if defined QLZ_PTR_64 && QLZ_STREAMING_BUFFER == 0
unsigned int offset;
#else
const unsigned char *offset;
#endif
#else
const unsigned char *offset[QLZ_POINTERS];
#endif
} qlz_hash_compress;
typedef struct
{
#if QLZ_COMPRESSION_LEVEL == 1
const unsigned char *offset;
#else
const unsigned char *offset[QLZ_POINTERS];
#endif
} qlz_hash_decompress;
// states
typedef struct
{
#if QLZ_STREAMING_BUFFER > 0
unsigned char stream_buffer[QLZ_STREAMING_BUFFER];
#endif
size_t stream_counter;
qlz_hash_compress hash[QLZ_HASH_VALUES];
unsigned char hash_counter[QLZ_HASH_VALUES];
} qlz_state_compress;
#if QLZ_COMPRESSION_LEVEL == 1 || QLZ_COMPRESSION_LEVEL == 2
typedef struct
{
#if QLZ_STREAMING_BUFFER > 0
unsigned char stream_buffer[QLZ_STREAMING_BUFFER];
#endif
qlz_hash_decompress hash[QLZ_HASH_VALUES];
unsigned char hash_counter[QLZ_HASH_VALUES];
size_t stream_counter;
} qlz_state_decompress;
#elif QLZ_COMPRESSION_LEVEL == 3
typedef struct
{
#if QLZ_STREAMING_BUFFER > 0
unsigned char stream_buffer[QLZ_STREAMING_BUFFER];
#endif
#if QLZ_COMPRESSION_LEVEL <= 2
qlz_hash_decompress hash[QLZ_HASH_VALUES];
#endif
size_t stream_counter;
} qlz_state_decompress;
#endif
#ifdef EXTERNC
extern "C" {
#endif
// Public functions of QuickLZ
size_t qlz_size_decompressed(const char *source);
size_t qlz_size_compressed(const char *source);
size_t qlz_compress(const void *source, char *destination, size_t size, qlz_state_compress *state);
size_t qlz_decompress(const char *source, void *destination, qlz_state_decompress *state);
int qlz_get_setting(int setting);
extern qlz_state_compress *state_compress;
extern qlz_state_decompress *state_decompress;
#ifdef EXTERNC
}
#endif
#endif

4
polymer/eduke32/build/src/defs.c
View file

@ -12,7 +12,7 @@
#include "scriptfile.h"
#include "cache1d.h"
#include "kplib.h"
#include "quicklz.h"
#include "lz4.h"
#include "common.h"
#include "mdsprite.h" // md3model_t
@ -189,7 +189,7 @@ static void tile_from_truecolpic(int32_t tile, const palette_t *picptr, int32_t
// initprintf(" %d %d %d %d\n",col->r,col->g,col->b,col->f);
}
faketilesiz[tile] = qlz_compress(ftd, faketiledata[tile], xsiz*ysiz, state_compress);
faketilesiz[tile] = LZ4_compress(ftd, faketiledata[tile], xsiz*ysiz);
Bfree(ftd);
}

8
polymer/eduke32/build/src/dxtfilter.c
View file

@ -41,7 +41,7 @@ Description of Ken's filter to improve LZW compression of DXT1 format by ~15%: (
#include "compat.h"
#include "build.h"
#include "texcache.h"
#include "quicklz.h"
#include "lz4.h"
static uint16_t dxt_hicosub(uint16_t c)
{
@ -68,7 +68,7 @@ static void dxt_handle_io(int32_t fil, int32_t len, void *midbuf, char *packbuf)
if (glusetexcache == 2)
{
cleng = qlz_compress(midbuf, packbuf, len, state_compress);
cleng = LZ4_compress((const char*)midbuf, packbuf, len);
if (cleng == 0 || cleng > len-1)
{
@ -107,7 +107,7 @@ static int32_t dedxt_handle_io(int32_t fil, int32_t j /* TODO: better name */,
{
if (ispacked && cleng < j)
{
if (qlz_decompress((const char *)texcache.memcache.ptr + texcache.filepos, midbuf, state_decompress) == 0)
if (LZ4_decompress_fast((const char *)texcache.memcache.ptr + texcache.filepos, (char*)midbuf, cleng) == 0)
{
texcache.filepos += cleng;
return -1;
@ -126,7 +126,7 @@ static int32_t dedxt_handle_io(int32_t fil, int32_t j /* TODO: better name */,
return -1;
if (ispacked && cleng < j)
if (qlz_decompress(packbuf, midbuf, state_decompress) == 0)
if (LZ4_decompress_fast(packbuf, (char*)midbuf, cleng) == 0)
return -1;
}

13
polymer/eduke32/build/src/engine.c
View file

@ -18,7 +18,7 @@
#include "a.h"
#include "osd.h"
#include "crc32.h"
#include "quicklz.h"
#include "lz4.h"
#include "baselayer.h"
#include "scriptfile.h"
@ -240,9 +240,6 @@ int32_t showfirstwall=0;
int32_t showheightindicators=1;
int32_t circlewall=-1;
qlz_state_compress *state_compress = NULL;
qlz_state_decompress *state_decompress = NULL;
int32_t whitecol;
#ifdef POLYMER
@ -8639,8 +8636,6 @@ int32_t preinitengine(void)
{ (void **) &tsprite, sizeof(spritetype) *MAXSPRITESONSCREEN },
{ (void **) &spriteext, sizeof(spriteext_t) *(MAXSPRITES+MAXUNIQHUDID) },
{ (void **) &spritesmooth, sizeof(spritesmooth_t) *(MAXSPRITES+MAXUNIQHUDID) },
{ (void **) &state_compress, sizeof(qlz_state_compress) },
{ (void **) &state_decompress, sizeof(qlz_state_decompress) }
};
if (editstatus)
@ -8674,8 +8669,6 @@ int32_t preinitengine(void)
spriteext = spriteext_s;
spritesmooth = spritesmooth_s;
# endif
state_compress = (qlz_state_compress *) Bcalloc(sizeof(qlz_state_compress) + sizeof(qlz_state_decompress), 1);
state_decompress = (qlz_state_decompress *)((int8_t *)(state_compress) + sizeof(qlz_state_compress));
#endif
if ((e = Bgetenv("BUILD_NOP6")) != NULL)
@ -8816,8 +8809,6 @@ void uninitengine(void)
#ifdef DYNALLOC_ARRAYS
DO_FREE_AND_NULL(blockptr);
#else
DO_FREE_AND_NULL(state_compress);
#endif
uninitsystem();
@ -11571,7 +11562,7 @@ void loadtile(int16_t tilenume)
{
walock[tilenume] = 255;
allocache(&waloff[tilenume], dasiz, &walock[tilenume]);
qlz_decompress(faketiledata[tilenume], (char *)waloff[tilenume], state_decompress);
LZ4_decompress_fast(faketiledata[tilenume], (char *)waloff[tilenume], dasiz);
Bfree(faketiledata[tilenume]);
faketiledata[tilenume] = NULL;
}

877
polymer/eduke32/build/src/lz4.c Normal file
View file

@ -0,0 +1,877 @@
/*
LZ4 - Fast LZ compression algorithm
Copyright (C) 2011-2014, Yann Collet.
BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
You can contact the author at :
- LZ4 source repository : http://code.google.com/p/lz4/
- LZ4 public forum : https://groups.google.com/forum/#!forum/lz4c
*/
/**************************************
Tuning parameters
**************************************/
/*
* MEMORY_USAGE :
* Memory usage formula : N->2^N Bytes (examples : 10 -> 1KB; 12 -> 4KB ; 16 -> 64KB; 20 -> 1MB; etc.)
* Increasing memory usage improves compression ratio
* Reduced memory usage can improve speed, due to cache effect
* Default value is 14, for 16KB, which nicely fits into Intel x86 L1 cache
*/
#define MEMORY_USAGE 14
/*
* HEAPMODE :
* Select how default compression functions will allocate memory for their hash table,
* in memory stack (0:default, fastest), or in memory heap (1:requires memory allocation (malloc)).
*/
#define HEAPMODE 0
/**************************************
CPU Feature Detection
**************************************/
/* 32 or 64 bits ? */
#if (defined(__x86_64__) || defined(_M_X64) || defined(_WIN64) \
|| defined(__powerpc64__) || defined(__ppc64__) || defined(__PPC64__) \
|| defined(__64BIT__) || defined(_LP64) || defined(__LP64__) \
|| defined(__ia64) || defined(__itanium__) || defined(_M_IA64) ) /* Detects 64 bits mode */
# define LZ4_ARCH64 1
#else
# define LZ4_ARCH64 0
#endif
/*
* Little Endian or Big Endian ?
* Overwrite the #define below if you know your architecture endianess
*/
#if defined (__GLIBC__)
# include <endian.h>
# if (__BYTE_ORDER == __BIG_ENDIAN)
# define LZ4_BIG_ENDIAN 1
# endif
#elif (defined(__BIG_ENDIAN__) || defined(__BIG_ENDIAN) || defined(_BIG_ENDIAN)) && !(defined(__LITTLE_ENDIAN__) || defined(__LITTLE_ENDIAN) || defined(_LITTLE_ENDIAN))
# define LZ4_BIG_ENDIAN 1
#elif defined(__sparc) || defined(__sparc__) \
|| defined(__powerpc__) || defined(__ppc__) || defined(__PPC__) \
|| defined(__hpux) || defined(__hppa) \
|| defined(_MIPSEB) || defined(__s390__)
# define LZ4_BIG_ENDIAN 1
#else
/* Little Endian assumed. PDP Endian and other very rare endian format are unsupported. */
#endif
/*
* Unaligned memory access is automatically enabled for "common" CPU, such as x86.
* For others CPU, such as ARM, the compiler may be more cautious, inserting unnecessary extra code to ensure aligned access property
* If you know your target CPU supports unaligned memory access, you want to force this option manually to improve performance
*/
#if defined(__ARM_FEATURE_UNALIGNED)
# define LZ4_FORCE_UNALIGNED_ACCESS 1
#endif
/* Define this parameter if your target system or compiler does not support hardware bit count */
#if defined(_MSC_VER) && defined(_WIN32_WCE) /* Visual Studio for Windows CE does not support Hardware bit count */
# define LZ4_FORCE_SW_BITCOUNT
#endif
/*
* BIG_ENDIAN_NATIVE_BUT_INCOMPATIBLE :
* This option may provide a small boost to performance for some big endian cpu, although probably modest.
* You may set this option to 1 if data will remain within closed environment.
* This option is useless on Little_Endian CPU (such as x86)
*/
/* #define BIG_ENDIAN_NATIVE_BUT_INCOMPATIBLE 1 */
/**************************************
Compiler Options
**************************************/
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */
/* "restrict" is a known keyword */
#else
# define restrict /* Disable restrict */
#endif
#ifdef _MSC_VER /* Visual Studio */
# define FORCE_INLINE static __forceinline
# include <intrin.h> /* For Visual 2005 */
# if LZ4_ARCH64 /* 64-bits */
# pragma intrinsic(_BitScanForward64) /* For Visual 2005 */
# pragma intrinsic(_BitScanReverse64) /* For Visual 2005 */
# else /* 32-bits */
# pragma intrinsic(_BitScanForward) /* For Visual 2005 */
# pragma intrinsic(_BitScanReverse) /* For Visual 2005 */
# endif
# pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
#else
# ifdef __GNUC__
# define FORCE_INLINE static inline __attribute__((always_inline))
# else
# define FORCE_INLINE static inline
# endif
#endif
#ifdef _MSC_VER /* Visual Studio */
# define lz4_bswap16(x) _byteswap_ushort(x)
#else
# define lz4_bswap16(x) ((unsigned short int) ((((x) >> 8) & 0xffu) | (((x) & 0xffu) << 8)))
#endif
#define GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
#if (GCC_VERSION >= 302) || (__INTEL_COMPILER >= 800) || defined(__clang__)
# define expect(expr,value) (__builtin_expect ((expr),(value)) )
#else
# define expect(expr,value) (expr)
#endif
#define likely(expr) expect((expr) != 0, 1)
#define unlikely(expr) expect((expr) != 0, 0)
/**************************************
Memory routines
**************************************/
#include <stdlib.h> /* malloc, calloc, free */
#define ALLOCATOR(n,s) calloc(n,s)
#define FREEMEM free
#include <string.h> /* memset, memcpy */
#define MEM_INIT memset
/**************************************
Includes
**************************************/
#include "lz4.h"
/**************************************
Basic Types
**************************************/
#if defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */
# include <stdint.h>
typedef uint8_t BYTE;
typedef uint16_t U16;
typedef uint32_t U32;
typedef int32_t S32;
typedef uint64_t U64;
#else
typedef unsigned char BYTE;
typedef unsigned short U16;
typedef unsigned int U32;
typedef signed int S32;
typedef unsigned long long U64;
#endif
#if defined(__GNUC__) && !defined(LZ4_FORCE_UNALIGNED_ACCESS)
# define _PACKED __attribute__ ((packed))
#else
# define _PACKED
#endif
#if !defined(LZ4_FORCE_UNALIGNED_ACCESS) && !defined(__GNUC__)
# if defined(__IBMC__) || defined(__SUNPRO_C) || defined(__SUNPRO_CC)
# pragma pack(1)
# else
# pragma pack(push, 1)
# endif
#endif
typedef struct { U16 v; } _PACKED U16_S;
typedef struct { U32 v; } _PACKED U32_S;
typedef struct { U64 v; } _PACKED U64_S;
typedef struct {size_t v;} _PACKED size_t_S;
#if !defined(LZ4_FORCE_UNALIGNED_ACCESS) && !defined(__GNUC__)
# if defined(__SUNPRO_C) || defined(__SUNPRO_CC)
# pragma pack(0)
# else
# pragma pack(pop)
# endif
#endif
#define A16(x) (((U16_S *)(x))->v)
#define A32(x) (((U32_S *)(x))->v)
#define A64(x) (((U64_S *)(x))->v)
#define AARCH(x) (((size_t_S *)(x))->v)
/**************************************
Constants
**************************************/
#define LZ4_HASHLOG (MEMORY_USAGE-2)
#define HASHTABLESIZE (1 << MEMORY_USAGE)
#define HASHNBCELLS4 (1 << LZ4_HASHLOG)
#define MINMATCH 4
#define COPYLENGTH 8
#define LASTLITERALS 5
#define MFLIMIT (COPYLENGTH+MINMATCH)
static const int LZ4_minLength = (MFLIMIT+1);
#define KB *(1U<<10)
#define MB *(1U<<20)
#define GB *(1U<<30)
#define LZ4_64KLIMIT ((64 KB) + (MFLIMIT-1))
#define SKIPSTRENGTH 6 /* Increasing this value will make the compression run slower on incompressible data */
#define MAXD_LOG 16
#define MAX_DISTANCE ((1 << MAXD_LOG) - 1)
#define ML_BITS 4
#define ML_MASK ((1U<<ML_BITS)-1)
#define RUN_BITS (8-ML_BITS)
#define RUN_MASK ((1U<<RUN_BITS)-1)
/**************************************
Structures and local types
**************************************/
typedef struct {
U32 hashTable[HASHNBCELLS4];
const BYTE* bufferStart;
const BYTE* base;
const BYTE* nextBlock;
} LZ4_Data_Structure;
typedef enum { notLimited = 0, limited = 1 } limitedOutput_directive;
typedef enum { byPtr, byU32, byU16 } tableType_t;
typedef enum { noPrefix = 0, withPrefix = 1 } prefix64k_directive;
typedef enum { endOnOutputSize = 0, endOnInputSize = 1 } endCondition_directive;
typedef enum { full = 0, partial = 1 } earlyEnd_directive;
/**************************************
Architecture-specific macros
**************************************/
#define STEPSIZE sizeof(size_t)
#define LZ4_COPYSTEP(d,s) { AARCH(d) = AARCH(s); d+=STEPSIZE; s+=STEPSIZE; }
#define LZ4_COPY8(d,s) { LZ4_COPYSTEP(d,s); if (STEPSIZE<8) LZ4_COPYSTEP(d,s); }
#if (defined(LZ4_BIG_ENDIAN) && !defined(BIG_ENDIAN_NATIVE_BUT_INCOMPATIBLE))
# define LZ4_READ_LITTLEENDIAN_16(d,s,p) { U16 v = A16(p); v = lz4_bswap16(v); d = (s) - v; }
# define LZ4_WRITE_LITTLEENDIAN_16(p,i) { U16 v = (U16)(i); v = lz4_bswap16(v); A16(p) = v; p+=2; }
#else /* Little Endian */
# define LZ4_READ_LITTLEENDIAN_16(d,s,p) { d = (s) - A16(p); }
# define LZ4_WRITE_LITTLEENDIAN_16(p,v) { A16(p) = v; p+=2; }
#endif
/**************************************
Macros
**************************************/
#if LZ4_ARCH64 || !defined(__GNUC__)
# define LZ4_WILDCOPY(d,s,e) { do { LZ4_COPY8(d,s) } while (d<e); } /* at the end, d>=e; */
#else
# define LZ4_WILDCOPY(d,s,e) { if (likely(e-d <= 8)) LZ4_COPY8(d,s) else do { LZ4_COPY8(d,s) } while (d<e); }
#endif
#define LZ4_SECURECOPY(d,s,e) { if (d<e) LZ4_WILDCOPY(d,s,e); }
/****************************
Private local functions
****************************/
#if LZ4_ARCH64
FORCE_INLINE int LZ4_NbCommonBytes (register U64 val)
{
# if defined(LZ4_BIG_ENDIAN)
# if defined(_MSC_VER) && !defined(LZ4_FORCE_SW_BITCOUNT)
unsigned long r = 0;
_BitScanReverse64( &r, val );
return (int)(r>>3);
# elif defined(__GNUC__) && (GCC_VERSION >= 304) && !defined(LZ4_FORCE_SW_BITCOUNT)
return (__builtin_clzll(val) >> 3);
# else
int r;
if (!(val>>32)) { r=4; } else { r=0; val>>=32; }
if (!(val>>16)) { r+=2; val>>=8; } else { val>>=24; }
r += (!val);
return r;
# endif
# else
# if defined(_MSC_VER) && !defined(LZ4_FORCE_SW_BITCOUNT)
unsigned long r = 0;
_BitScanForward64( &r, val );
return (int)(r>>3);
# elif defined(__GNUC__) && (GCC_VERSION >= 304) && !defined(LZ4_FORCE_SW_BITCOUNT)
return (__builtin_ctzll(val) >> 3);
# else
static const int DeBruijnBytePos[64] = { 0, 0, 0, 0, 0, 1, 1, 2, 0, 3, 1, 3, 1, 4, 2, 7, 0, 2, 3, 6, 1, 5, 3, 5, 1, 3, 4, 4, 2, 5, 6, 7, 7, 0, 1, 2, 3, 3, 4, 6, 2, 6, 5, 5, 3, 4, 5, 6, 7, 1, 2, 4, 6, 4, 4, 5, 7, 2, 6, 5, 7, 6, 7, 7 };
return DeBruijnBytePos[((U64)((val & -(long long)val) * 0x0218A392CDABBD3FULL)) >> 58];
# endif
# endif
}
#else
FORCE_INLINE int LZ4_NbCommonBytes (register U32 val)
{
# if defined(LZ4_BIG_ENDIAN)
# if defined(_MSC_VER) && !defined(LZ4_FORCE_SW_BITCOUNT)
unsigned long r = 0;
_BitScanReverse( &r, val );
return (int)(r>>3);
# elif defined(__GNUC__) && (GCC_VERSION >= 304) && !defined(LZ4_FORCE_SW_BITCOUNT)
return (__builtin_clz(val) >> 3);
# else
int r;
if (!(val>>16)) { r=2; val>>=8; } else { r=0; val>>=24; }
r += (!val);
return r;
# endif
# else
# if defined(_MSC_VER) && !defined(LZ4_FORCE_SW_BITCOUNT)
unsigned long r;
_BitScanForward( &r, val );
return (int)(r>>3);
# elif defined(__GNUC__) && (GCC_VERSION >= 304) && !defined(LZ4_FORCE_SW_BITCOUNT)
return (__builtin_ctz(val) >> 3);
# else
static const int DeBruijnBytePos[32] = { 0, 0, 3, 0, 3, 1, 3, 0, 3, 2, 2, 1, 3, 2, 0, 1, 3, 3, 1, 2, 2, 2, 2, 0, 3, 1, 2, 0, 1, 0, 1, 1 };
return DeBruijnBytePos[((U32)((val & -(S32)val) * 0x077CB531U)) >> 27];
# endif
# endif
}
#endif
/****************************
Compression functions
****************************/
FORCE_INLINE int LZ4_hashSequence(U32 sequence, tableType_t tableType)
{
if (tableType == byU16)
return (((sequence) * 2654435761U) >> ((MINMATCH*8)-(LZ4_HASHLOG+1)));
else
return (((sequence) * 2654435761U) >> ((MINMATCH*8)-LZ4_HASHLOG));
}
FORCE_INLINE int LZ4_hashPosition(const BYTE* p, tableType_t tableType) { return LZ4_hashSequence(A32(p), tableType); }
FORCE_INLINE void LZ4_putPositionOnHash(const BYTE* p, U32 h, void* tableBase, tableType_t tableType, const BYTE* srcBase)
{
switch (tableType)
{
case byPtr: { const BYTE** hashTable = (const BYTE**) tableBase; hashTable[h] = p; break; }
case byU32: { U32* hashTable = (U32*) tableBase; hashTable[h] = (U32)(p-srcBase); break; }
case byU16: { U16* hashTable = (U16*) tableBase; hashTable[h] = (U16)(p-srcBase); break; }
}
}
FORCE_INLINE void LZ4_putPosition(const BYTE* p, void* tableBase, tableType_t tableType, const BYTE* srcBase)
{
U32 h = LZ4_hashPosition(p, tableType);
LZ4_putPositionOnHash(p, h, tableBase, tableType, srcBase);
}
FORCE_INLINE const BYTE* LZ4_getPositionOnHash(U32 h, void* tableBase, tableType_t tableType, const BYTE* srcBase)
{
if (tableType == byPtr) { const BYTE** hashTable = (const BYTE**) tableBase; return hashTable[h]; }
if (tableType == byU32) { U32* hashTable = (U32*) tableBase; return hashTable[h] + srcBase; }
{ U16* hashTable = (U16*) tableBase; return hashTable[h] + srcBase; } /* default, to ensure a return */
}
FORCE_INLINE const BYTE* LZ4_getPosition(const BYTE* p, void* tableBase, tableType_t tableType, const BYTE* srcBase)
{
U32 h = LZ4_hashPosition(p, tableType);
return LZ4_getPositionOnHash(h, tableBase, tableType, srcBase);
}
FORCE_INLINE int LZ4_compress_generic(
void* ctx,
const char* source,
char* dest,
int inputSize,
int maxOutputSize,
limitedOutput_directive limitedOutput,
tableType_t tableType,
prefix64k_directive prefix)
{
const BYTE* ip = (const BYTE*) source;
const BYTE* const base = (prefix==withPrefix) ? ((LZ4_Data_Structure*)ctx)->base : (const BYTE*) source;
const BYTE* const lowLimit = ((prefix==withPrefix) ? ((LZ4_Data_Structure*)ctx)->bufferStart : (const BYTE*)source);
const BYTE* anchor = (const BYTE*) source;
const BYTE* const iend = ip + inputSize;
const BYTE* const mflimit = iend - MFLIMIT;
const BYTE* const matchlimit = iend - LASTLITERALS;
BYTE* op = (BYTE*) dest;
BYTE* const oend = op + maxOutputSize;
int length;
const int skipStrength = SKIPSTRENGTH;
U32 forwardH;
/* Init conditions */
if ((U32)inputSize > (U32)LZ4_MAX_INPUT_SIZE) return 0; /* Unsupported input size, too large (or negative) */
if ((prefix==withPrefix) && (ip != ((LZ4_Data_Structure*)ctx)->nextBlock)) return 0; /* must continue from end of previous block */
if (prefix==withPrefix) ((LZ4_Data_Structure*)ctx)->nextBlock=iend; /* do it now, due to potential early exit */
if ((tableType == byU16) && (inputSize>=(int)LZ4_64KLIMIT)) return 0; /* Size too large (not within 64K limit) */
if (inputSize<LZ4_minLength) goto _last_literals; /* Input too small, no compression (all literals) */
/* First Byte */
LZ4_putPosition(ip, ctx, tableType, base);
ip++; forwardH = LZ4_hashPosition(ip, tableType);
/* Main Loop */
for ( ; ; )
{
int findMatchAttempts = (1U << skipStrength) + 3;
const BYTE* forwardIp = ip;
const BYTE* ref;
BYTE* token;
/* Find a match */
do {
U32 h = forwardH;
int step = findMatchAttempts++ >> skipStrength;
ip = forwardIp;
forwardIp = ip + step;
if (unlikely(forwardIp > mflimit)) { goto _last_literals; }
forwardH = LZ4_hashPosition(forwardIp, tableType);
ref = LZ4_getPositionOnHash(h, ctx, tableType, base);
LZ4_putPositionOnHash(ip, h, ctx, tableType, base);
} while ((ref + MAX_DISTANCE < ip) || (A32(ref) != A32(ip)));
/* Catch up */
while ((ip>anchor) && (ref > lowLimit) && (unlikely(ip[-1]==ref[-1]))) { ip--; ref--; }
/* Encode Literal length */
length = (int)(ip - anchor);
token = op++;
if ((limitedOutput) && (unlikely(op + length + (2 + 1 + LASTLITERALS) + (length/255) > oend))) return 0; /* Check output limit */
if (length>=(int)RUN_MASK)
{
int len = length-RUN_MASK;
*token=(RUN_MASK<<ML_BITS);
for(; len >= 255 ; len-=255) *op++ = 255;
*op++ = (BYTE)len;
}
else *token = (BYTE)(length<<ML_BITS);
/* Copy Literals */
{ BYTE* end=(op)+(length); LZ4_WILDCOPY(op,anchor,end); op=end; }
_next_match:
/* Encode Offset */
LZ4_WRITE_LITTLEENDIAN_16(op,(U16)(ip-ref));
/* Start Counting */
ip+=MINMATCH; ref+=MINMATCH; /* MinMatch already verified */
anchor = ip;
while (likely(ip<matchlimit-(STEPSIZE-1)))
{
size_t diff = AARCH(ref) ^ AARCH(ip);
if (!diff) { ip+=STEPSIZE; ref+=STEPSIZE; continue; }
ip += LZ4_NbCommonBytes(diff);
goto _endCount;
}
if (LZ4_ARCH64) if ((ip<(matchlimit-3)) && (A32(ref) == A32(ip))) { ip+=4; ref+=4; }
if ((ip<(matchlimit-1)) && (A16(ref) == A16(ip))) { ip+=2; ref+=2; }
if ((ip<matchlimit) && (*ref == *ip)) ip++;
_endCount:
/* Encode MatchLength */
length = (int)(ip - anchor);
if ((limitedOutput) && (unlikely(op + (1 + LASTLITERALS) + (length>>8) > oend))) return 0; /* Check output limit */
if (length>=(int)ML_MASK)
{
*token += ML_MASK;
length -= ML_MASK;
for (; length > 509 ; length-=510) { *op++ = 255; *op++ = 255; }
if (length >= 255) { length-=255; *op++ = 255; }
*op++ = (BYTE)length;
}
else *token += (BYTE)(length);
/* Test end of chunk */
if (ip > mflimit) { anchor = ip; break; }
/* Fill table */
LZ4_putPosition(ip-2, ctx, tableType, base);
/* Test next position */
ref = LZ4_getPosition(ip, ctx, tableType, base);
LZ4_putPosition(ip, ctx, tableType, base);
if ((ref + MAX_DISTANCE >= ip) && (A32(ref) == A32(ip))) { token = op++; *token=0; goto _next_match; }
/* Prepare next loop */
anchor = ip++;
forwardH = LZ4_hashPosition(ip, tableType);
}
_last_literals:
/* Encode Last Literals */
{
int lastRun = (int)(iend - anchor);
if ((limitedOutput) && (((char*)op - dest) + lastRun + 1 + ((lastRun+255-RUN_MASK)/255) > (U32)maxOutputSize)) return 0; /* Check output limit */
if (lastRun>=(int)RUN_MASK) { *op++=(RUN_MASK<<ML_BITS); lastRun-=RUN_MASK; for(; lastRun >= 255 ; lastRun-=255) *op++ = 255; *op++ = (BYTE) lastRun; }
else *op++ = (BYTE)(lastRun<<ML_BITS);
memcpy(op, anchor, iend - anchor);
op += iend-anchor;
}
/* End */
return (int) (((char*)op)-dest);
}
int LZ4_compress(const char* source, char* dest, int inputSize)
{
#if (HEAPMODE)
void* ctx = ALLOCATOR(HASHNBCELLS4, 4); /* Aligned on 4-bytes boundaries */
#else
U32 ctx[1U<<(MEMORY_USAGE-2)] = {0}; /* Ensure data is aligned on 4-bytes boundaries */
#endif
int result;
if (inputSize < (int)LZ4_64KLIMIT)
result = LZ4_compress_generic((void*)ctx, source, dest, inputSize, 0, notLimited, byU16, noPrefix);
else
result = LZ4_compress_generic((void*)ctx, source, dest, inputSize, 0, notLimited, (sizeof(void*)==8) ? byU32 : byPtr, noPrefix);
#if (HEAPMODE)
FREEMEM(ctx);
#endif
return result;
}
int LZ4_compress_limitedOutput(const char* source, char* dest, int inputSize, int maxOutputSize)
{
#if (HEAPMODE)
void* ctx = ALLOCATOR(HASHNBCELLS4, 4); /* Aligned on 4-bytes boundaries */
#else
U32 ctx[1U<<(MEMORY_USAGE-2)] = {0}; /* Ensure data is aligned on 4-bytes boundaries */
#endif
int result;
if (inputSize < (int)LZ4_64KLIMIT)
result = LZ4_compress_generic((void*)ctx, source, dest, inputSize, maxOutputSize, limited, byU16, noPrefix);
else
result = LZ4_compress_generic((void*)ctx, source, dest, inputSize, maxOutputSize, limited, (sizeof(void*)==8) ? byU32 : byPtr, noPrefix);
#if (HEAPMODE)
FREEMEM(ctx);
#endif
return result;
}
/*****************************
Using external allocation
*****************************/
int LZ4_sizeofState() { return 1 << MEMORY_USAGE; }
int LZ4_compress_withState (void* state, const char* source, char* dest, int inputSize)
{
if (((size_t)(state)&3) != 0) return 0; /* Error : state is not aligned on 4-bytes boundary */
MEM_INIT(state, 0, LZ4_sizeofState());
if (inputSize < (int)LZ4_64KLIMIT)
return LZ4_compress_generic(state, source, dest, inputSize, 0, notLimited, byU16, noPrefix);
else
return LZ4_compress_generic(state, source, dest, inputSize, 0, notLimited, (sizeof(void*)==8) ? byU32 : byPtr, noPrefix);
}
int LZ4_compress_limitedOutput_withState (void* state, const char* source, char* dest, int inputSize, int maxOutputSize)
{
if (((size_t)(state)&3) != 0) return 0; /* Error : state is not aligned on 4-bytes boundary */
MEM_INIT(state, 0, LZ4_sizeofState());
if (inputSize < (int)LZ4_64KLIMIT)
return LZ4_compress_generic(state, source, dest, inputSize, maxOutputSize, limited, byU16, noPrefix);
else
return LZ4_compress_generic(state, source, dest, inputSize, maxOutputSize, limited, (sizeof(void*)==8) ? byU32 : byPtr, noPrefix);
}
/****************************
Stream functions
****************************/
int LZ4_sizeofStreamState()
{
return sizeof(LZ4_Data_Structure);
}
FORCE_INLINE void LZ4_init(LZ4_Data_Structure* lz4ds, const BYTE* base)
{
MEM_INIT(lz4ds->hashTable, 0, sizeof(lz4ds->hashTable));
lz4ds->bufferStart = base;
lz4ds->base = base;
lz4ds->nextBlock = base;
}
int LZ4_resetStreamState(void* state, const char* inputBuffer)
{
if ((((size_t)state) & 3) != 0) return 1; /* Error : pointer is not aligned on 4-bytes boundary */
LZ4_init((LZ4_Data_Structure*)state, (const BYTE*)inputBuffer);
return 0;
}
void* LZ4_create (const char* inputBuffer)
{
void* lz4ds = ALLOCATOR(1, sizeof(LZ4_Data_Structure));
LZ4_init ((LZ4_Data_Structure*)lz4ds, (const BYTE*)inputBuffer);
return lz4ds;
}
int LZ4_free (void* LZ4_Data)
{
FREEMEM(LZ4_Data);
return (0);
}
char* LZ4_slideInputBuffer (void* LZ4_Data)
{
LZ4_Data_Structure* lz4ds = (LZ4_Data_Structure*)LZ4_Data;
size_t delta = lz4ds->nextBlock - (lz4ds->bufferStart + 64 KB);
if ( (lz4ds->base - delta > lz4ds->base) /* underflow control */
|| ((size_t)(lz4ds->nextBlock - lz4ds->base) > 0xE0000000) ) /* close to 32-bits limit */
{
size_t deltaLimit = (lz4ds->nextBlock - 64 KB) - lz4ds->base;
int nH;
for (nH=0; nH < HASHNBCELLS4; nH++)
{
if ((size_t)(lz4ds->hashTable[nH]) < deltaLimit) lz4ds->hashTable[nH] = 0;
else lz4ds->hashTable[nH] -= (U32)deltaLimit;
}
memcpy((void*)(lz4ds->bufferStart), (const void*)(lz4ds->nextBlock - 64 KB), 64 KB);
lz4ds->base = lz4ds->bufferStart;
lz4ds->nextBlock = lz4ds->base + 64 KB;
}
else
{
memcpy((void*)(lz4ds->bufferStart), (const void*)(lz4ds->nextBlock - 64 KB), 64 KB);
lz4ds->nextBlock -= delta;
lz4ds->base -= delta;
}
return (char*)(lz4ds->nextBlock);
}
int LZ4_compress_continue (void* LZ4_Data, const char* source, char* dest, int inputSize)
{
return LZ4_compress_generic(LZ4_Data, source, dest, inputSize, 0, notLimited, byU32, withPrefix);
}
int LZ4_compress_limitedOutput_continue (void* LZ4_Data, const char* source, char* dest, int inputSize, int maxOutputSize)
{
return LZ4_compress_generic(LZ4_Data, source, dest, inputSize, maxOutputSize, limited, byU32, withPrefix);
}
/****************************
Decompression functions
****************************/
/*
* This generic decompression function cover all use cases.
* It shall be instanciated several times, using different sets of directives
* Note that it is essential this generic function is really inlined,
* in order to remove useless branches during compilation optimisation.
*/
FORCE_INLINE int LZ4_decompress_generic(
const char* source,
char* dest,
int inputSize,
int outputSize, /* If endOnInput==endOnInputSize, this value is the max size of Output Buffer. */
int endOnInput, /* endOnOutputSize, endOnInputSize */
int prefix64k, /* noPrefix, withPrefix */
int partialDecoding, /* full, partial */
int targetOutputSize /* only used if partialDecoding==partial */
)
{
/* Local Variables */
const BYTE* restrict ip = (const BYTE*) source;
const BYTE* ref;
const BYTE* const iend = ip + inputSize;
BYTE* op = (BYTE*) dest;
BYTE* const oend = op + outputSize;
BYTE* cpy;
BYTE* oexit = op + targetOutputSize;
/*const size_t dec32table[] = {0, 3, 2, 3, 0, 0, 0, 0}; / static reduces speed for LZ4_decompress_safe() on GCC64 */
const size_t dec32table[] = {4-0, 4-3, 4-2, 4-3, 4-0, 4-0, 4-0, 4-0}; /* static reduces speed for LZ4_decompress_safe() on GCC64 */
static const size_t dec64table[] = {0, 0, 0, (size_t)-1, 0, 1, 2, 3};
/* Special cases */
if ((partialDecoding) && (oexit> oend-MFLIMIT)) oexit = oend-MFLIMIT; /* targetOutputSize too high => decode everything */
if ((endOnInput) && (unlikely(outputSize==0))) return ((inputSize==1) && (*ip==0)) ? 0 : -1; /* Empty output buffer */
if ((!endOnInput) && (unlikely(outputSize==0))) return (*ip==0?1:-1);
/* Main Loop */
while (1)
{
unsigned token;
size_t length;
/* get runlength */
token = *ip++;
if ((length=(token>>ML_BITS)) == RUN_MASK)
{
unsigned s=255;
while (((endOnInput)?ip<iend:1) && (s==255))
{
s = *ip++;
length += s;
}
}
/* copy literals */
cpy = op+length;
if (((endOnInput) && ((cpy>(partialDecoding?oexit:oend-MFLIMIT)) || (ip+length>iend-(2+1+LASTLITERALS))) )
|| ((!endOnInput) && (cpy>oend-COPYLENGTH)))
{
if (partialDecoding)
{
if (cpy > oend) goto _output_error; /* Error : write attempt beyond end of output buffer */
if ((endOnInput) && (ip+length > iend)) goto _output_error; /* Error : read attempt beyond end of input buffer */
}
else
{
if ((!endOnInput) && (cpy != oend)) goto _output_error; /* Error : block decoding must stop exactly there */
if ((endOnInput) && ((ip+length != iend) || (cpy > oend))) goto _output_error; /* Error : input must be consumed */
}
memcpy(op, ip, length);
ip += length;
op += length;
break; /* Necessarily EOF, due to parsing restrictions */
}
LZ4_WILDCOPY(op, ip, cpy); ip -= (op-cpy); op = cpy;
/* get offset */
LZ4_READ_LITTLEENDIAN_16(ref,cpy,ip); ip+=2;
if ((prefix64k==noPrefix) && (unlikely(ref < (BYTE* const)dest))) goto _output_error; /* Error : offset outside destination buffer */
/* get matchlength */
if ((length=(token&ML_MASK)) == ML_MASK)
{
while ((!endOnInput) || (ip<iend-(LASTLITERALS+1))) /* Ensure enough bytes remain for LASTLITERALS + token */
{
unsigned s = *ip++;
length += s;
if (s==255) continue;
break;
}
}
/* copy repeated sequence */
if (unlikely((op-ref)<(int)STEPSIZE))
{
const size_t dec64 = dec64table[(sizeof(void*)==4) ? 0 : op-ref];
op[0] = ref[0];
op[1] = ref[1];
op[2] = ref[2];
op[3] = ref[3];
/*op += 4, ref += 4; ref -= dec32table[op-ref];
A32(op) = A32(ref);
op += STEPSIZE-4; ref -= dec64;*/
ref += dec32table[op-ref];
A32(op+4) = A32(ref);
op += STEPSIZE; ref -= dec64;
} else { LZ4_COPYSTEP(op,ref); }
cpy = op + length - (STEPSIZE-4);
if (unlikely(cpy>oend-COPYLENGTH-(STEPSIZE-4)))
{
if (cpy > oend-LASTLITERALS) goto _output_error; /* Error : last 5 bytes must be literals */
LZ4_SECURECOPY(op, ref, (oend-COPYLENGTH));
while(op<cpy) *op++=*ref++;
op=cpy;
continue;
}
LZ4_WILDCOPY(op, ref, cpy);
op=cpy; /* correction */
}
/* end of decoding */
if (endOnInput)
return (int) (((char*)op)-dest); /* Nb of output bytes decoded */
else
return (int) (((char*)ip)-source); /* Nb of input bytes read */
/* Overflow error detected */
_output_error:
return (int) (-(((char*)ip)-source))-1;
}
int LZ4_decompress_safe(const char* source, char* dest, int inputSize, int maxOutputSize)
{
return LZ4_decompress_generic(source, dest, inputSize, maxOutputSize, endOnInputSize, noPrefix, full, 0);
}
int LZ4_decompress_safe_withPrefix64k(const char* source, char* dest, int inputSize, int maxOutputSize)
{
return LZ4_decompress_generic(source, dest, inputSize, maxOutputSize, endOnInputSize, withPrefix, full, 0);
}
int LZ4_decompress_safe_partial(const char* source, char* dest, int inputSize, int targetOutputSize, int maxOutputSize)
{
return LZ4_decompress_generic(source, dest, inputSize, maxOutputSize, endOnInputSize, noPrefix, partial, targetOutputSize);
}
int LZ4_decompress_fast_withPrefix64k(const char* source, char* dest, int outputSize)
{
return LZ4_decompress_generic(source, dest, 0, outputSize, endOnOutputSize, withPrefix, full, 0);
}
int LZ4_decompress_fast(const char* source, char* dest, int outputSize)
{
#ifdef _MSC_VER /* This version is faster with Visual */
return LZ4_decompress_generic(source, dest, 0, outputSize, endOnOutputSize, noPrefix, full, 0);
#else
return LZ4_decompress_generic(source, dest, 0, outputSize, endOnOutputSize, withPrefix, full, 0);
#endif
}

877
polymer/eduke32/build/src/quicklz.c
View file

@ -1,877 +0,0 @@
// Fast data compression library
// Copyright (C) 2006-2011 Lasse Mikkel Reinhold
// lar@quicklz.com
//
// QuickLZ can be used for free under the GPL 1, 2 or 3 license (where anything
// released into public must be open source) or under a commercial license if such
// has been acquired (see http://www.quicklz.com/order.html). The commercial license
// does not cover derived or ported versions created by third parties under GPL.
// 1.5.1 BETA 7
#include "quicklz.h"
#if defined _MSC_VER
#include <intrin.h>
#endif
#if QLZ_VERSION_MAJOR != 1 || QLZ_VERSION_MINOR != 5 || QLZ_VERSION_REVISION != 1
#error quicklz.c and quicklz.h have different versions
#endif
#if (defined(__X86__) || defined(__i386__) || defined(i386) || defined(_M_IX86) || defined(__386__) || defined(__x86_64__) || defined(_M_X64))
#define X86X64
#endif
#define MINOFFSET 2
#define UNCONDITIONAL_MATCHLEN_COMPRESSOR 12
#define UNCONDITIONAL_MATCHLEN_DECOMPRESSOR 6
#define UNCOMPRESSED_END 4
#define CWORD_LEN 4
#if QLZ_COMPRESSION_LEVEL == 1 && defined QLZ_PTR_64 && QLZ_STREAMING_BUFFER == 0
#define OFFSET_BASE source
#define CAST (ui32)(size_t)
#else
#define OFFSET_BASE 0
#define CAST
#endif
#if defined(X86X64) && (defined(__GNUC__) || defined(__INTEL_COMPILER))
#define qlz_likely(x) __builtin_expect (x, 1)
#define qlz_unlikely(x) __builtin_expect (x, 0)
#else
#define qlz_likely(x) (x)
#define qlz_unlikely(x) (x)
#endif
int qlz_get_setting(int setting)
{
switch (setting)
{
case 0: return QLZ_COMPRESSION_LEVEL;
case 1: return sizeof(qlz_state_compress);
case 2: return sizeof(qlz_state_decompress);
case 3: return QLZ_STREAMING_BUFFER;
#ifdef QLZ_MEMORY_SAFE
case 6: return 1;
#else
case 6: return 0;
#endif
case 7: return QLZ_VERSION_MAJOR;
case 8: return QLZ_VERSION_MINOR;
case 9: return QLZ_VERSION_REVISION;
}
return -1;
}
#if QLZ_COMPRESSION_LEVEL == 1
static int same(const unsigned char *src, size_t n)
{
while (n > 0 && *(src + n) == *src)
n--;
return n == 0 ? 1 : 0;
}
#endif
static void reset_table_compress(qlz_state_compress *state)
{
int i;
for (i = 0; i < QLZ_HASH_VALUES; i++)
{
#if QLZ_COMPRESSION_LEVEL == 1
state->hash[i].offset = 0;
#else
state->hash_counter[i] = 0;
#endif
}
}
static void reset_table_decompress(qlz_state_decompress *state)
{
int i;
(void)state;
(void)i;
#if QLZ_COMPRESSION_LEVEL == 2
for (i = 0; i < QLZ_HASH_VALUES; i++)
{
state->hash_counter[i] = 0;
}
#endif
}
static __inline ui32 hash_func(ui32 i)
{
#if QLZ_COMPRESSION_LEVEL == 2
return ((i >> 9) ^(i >> 13) ^ i) & (QLZ_HASH_VALUES - 1);
#else
return ((i >> 12) ^ i) & (QLZ_HASH_VALUES - 1);
#endif
}
static __inline ui32 fast_read(void const *src, ui32 bytes)
{
#ifndef X86X64
unsigned char *p = (unsigned char *)src;
switch (bytes)
{
case 4:
return(*p | *(p + 1) << 8 | *(p + 2) << 16 | *(p + 3) << 24);
case 3:
return(*p | *(p + 1) << 8 | *(p + 2) << 16);
case 2:
return(*p | *(p + 1) << 8);
case 1:
return(*p);
}
return 0;
#else
if (bytes >= 1 && bytes <= 4)
return *((ui32 *)src);
else
return 0;
#endif
}
static __inline ui32 hashat(const unsigned char *src)
{
ui32 fetch, hash;
fetch = fast_read(src, 3);
hash = hash_func(fetch);
return hash;
}
static __inline void fast_write(ui32 f, void *dst, size_t bytes)
{
#ifndef X86X64
unsigned char *p = (unsigned char *)dst;
switch (bytes)
{
case 4:
*p = (unsigned char)f;
*(p + 1) = (unsigned char)(f >> 8);
*(p + 2) = (unsigned char)(f >> 16);
*(p + 3) = (unsigned char)(f >> 24);
return;
case 3:
*p = (unsigned char)f;
*(p + 1) = (unsigned char)(f >> 8);
*(p + 2) = (unsigned char)(f >> 16);
return;
case 2:
*p = (unsigned char)f;
*(p + 1) = (unsigned char)(f >> 8);
return;
case 1:
*p = (unsigned char)f;
return;
}
#else
switch (bytes)
{
case 4:
*((ui32 *)dst) = f;
return;
case 3:
*((ui32 *)dst) = f;
return;
case 2:
*((ui16 *)dst) = (ui16)f;
return;
case 1:
*((unsigned char *)dst) = (unsigned char)f;
return;
}
#endif
}
size_t qlz_size_decompressed(const char *source)
{
ui32 n, r;
n = (((*source) & 2) == 2) ? 4 : 1;
r = fast_read(source + 1 + n, n);
r = r & (0xffffffff >> ((4 - n)*8));
return r;
}
size_t qlz_size_compressed(const char *source)
{
ui32 n, r;
n = (((*source) & 2) == 2) ? 4 : 1;
r = fast_read(source + 1, n);
r = r & (0xffffffff >> ((4 - n)*8));
return r;
}
size_t qlz_size_header(const char *source)
{
size_t n = 2*((((*source) & 2) == 2) ? 4 : 1) + 1;
return n;
}
static __inline void memcpy_up(unsigned char *dst, const unsigned char *src, ui32 n)
{
// Caution if modifying memcpy_up! Overlap of dst and src must be special handled.
#ifndef X86X64
unsigned char *end = dst + n;
while (dst < end)
{
*dst = *src;
dst++;
src++;
}
#else
ui32 f = 0;
do
{
*(ui32 *)(dst + f) = *(ui32 *)(src + f);
f += MINOFFSET + 1;
}
while (f < n);
#endif
}
static __inline void update_hash(qlz_state_decompress *state, const unsigned char *s)
{
#if QLZ_COMPRESSION_LEVEL == 1
ui32 hash;
hash = hashat(s);
state->hash[hash].offset = s;
state->hash_counter[hash] = 1;
#elif QLZ_COMPRESSION_LEVEL == 2
ui32 hash;
unsigned char c;
hash = hashat(s);
c = state->hash_counter[hash];
state->hash[hash].offset[c & (QLZ_POINTERS - 1)] = s;
c++;
state->hash_counter[hash] = c;
#endif
(void)state;
(void)s;
}
#if QLZ_COMPRESSION_LEVEL <= 2
static void update_hash_upto(qlz_state_decompress *state, unsigned char **lh, const unsigned char *max)
{
while (*lh < max)
{
(*lh)++;
update_hash(state, *lh);
}
}
#endif
static size_t qlz_compress_core(const unsigned char *source, unsigned char *destination, size_t size, qlz_state_compress *state)
{
const unsigned char *last_byte = source + size - 1;
const unsigned char *src = source;
unsigned char *cword_ptr = destination;
unsigned char *dst = destination + CWORD_LEN;
ui32 cword_val = 1U << 31;
const unsigned char *last_matchstart = last_byte - UNCONDITIONAL_MATCHLEN_COMPRESSOR - UNCOMPRESSED_END;
ui32 fetch = 0;
unsigned int lits = 0;
(void) lits;
if (src <= last_matchstart)
fetch = fast_read(src, 3);
while (qlz_likely(src <= last_matchstart))
{
if (qlz_unlikely((cword_val & 1) == 1))
{
// store uncompressed if compression ratio is too low
if (src > source + (size >> 1) && dst - destination > src - source - ((src - source) >> 5))
return 0;
fast_write((cword_val >> 1) | (1U << 31), cword_ptr, CWORD_LEN);
cword_ptr = dst;
dst += CWORD_LEN;
cword_val = 1U << 31;
fetch = fast_read(src, 3);
}
#if QLZ_COMPRESSION_LEVEL == 1
{
const unsigned char *o;
ui32 hash, cached;
hash = hash_func(fetch);
cached = fetch ^ state->hash[hash].cache;
state->hash[hash].cache = fetch;
o = state->hash[hash].offset + OFFSET_BASE;
state->hash[hash].offset = CAST(src - OFFSET_BASE);
#ifdef X86X64
if ((cached & 0xffffff) == 0 && o != OFFSET_BASE && (src - o > MINOFFSET || (src == o + 1 && lits >= 3 && src > source + 3 && same(src - 3, 6))))
{
#else
if (cached == 0 && o != OFFSET_BASE && (src - o > MINOFFSET || (src == o + 1 && lits >= 3 && src > source + 3 && same(src - 3, 6))))
{
#endif
size_t matchlen = 3;
hash <<= 4;
cword_val = (cword_val >> 1) | (1U << 31);
#if defined X86X64 && defined QLZ_PTR_64
{
#ifdef __GNUC__
unsigned long long a = *(unsigned long long *)(src + matchlen);
unsigned long long b = *(unsigned long long *)(o + matchlen);
unsigned long long c = a^b;
#else
unsigned int a = *(unsigned int *)(src + matchlen);
unsigned int b = *(unsigned int *)(o + matchlen);
unsigned int c = a^b;
#endif
if (qlz_unlikely(c == 0))
{
size_t q = last_byte - UNCOMPRESSED_END - src + 1;
size_t remaining = q > 255 ? 255 : q;
matchlen += sizeof(c);
while (src[matchlen] == o[matchlen] && matchlen < remaining)
matchlen++;
}
else
{
#if defined _MSC_VER || defined __INTEL_COMPILER
unsigned int index = 0;
_BitScanForward((unsigned long *)&index, c);
matchlen += index >> 3;
#else
matchlen += __builtin_ctzll(c) >> 3;
#endif
}
}
#else
if (src[matchlen] == o[matchlen])
{
size_t q = last_byte - UNCOMPRESSED_END - src + 1;
size_t remaining = q > 255 ? 255 : q;
matchlen ++;
while (src[matchlen] == o[matchlen] && matchlen < remaining)
matchlen++;
}
#endif
src += matchlen;
if (qlz_likely(matchlen < 18))
{
fast_write((ui32)(matchlen - 2) | hash, dst, 2);
dst += 2;
}
else
{
fast_write((ui32)(matchlen << 16) | hash, dst, 3);
dst += 3;
}
fetch = fast_read(src, 3);
lits = 0;
}
else
{
lits++;
*dst = *src;
src++;
dst++;
cword_val = (cword_val >> 1);
#ifdef X86X64
fetch = fast_read(src, 3);
#else
fetch = (fetch >> 8 & 0xffff) | (*(src + 2) << 16);
#endif
}
}
#elif QLZ_COMPRESSION_LEVEL >= 2
{
const unsigned char *o, *offset2;
ui32 hash, matchlen, k, m, best_k = 0;
unsigned char c;
size_t remaining = (last_byte - UNCOMPRESSED_END - src + 1) > 255 ? 255 : (last_byte - UNCOMPRESSED_END - src + 1);
(void)best_k;
fetch = fast_read(src, 3);
hash = hash_func(fetch);
c = state->hash_counter[hash];
offset2 = state->hash[hash].offset[0];
if (offset2 < src - MINOFFSET && c > 0 && ((fast_read(offset2, 3) ^ fetch) & 0xffffff) == 0)
{
matchlen = 3;
if (*(offset2 + matchlen) == *(src + matchlen))
{
matchlen = 4;
while (*(offset2 + matchlen) == *(src + matchlen) && matchlen < remaining)
matchlen++;
}
}
else
matchlen = 0;
for (k = 1; k < QLZ_POINTERS && c > k; k++)
{
o = state->hash[hash].offset[k];
#if QLZ_COMPRESSION_LEVEL == 3
if (((fast_read(o, 3) ^ fetch) & 0xffffff) == 0 && o < src - MINOFFSET)
#elif QLZ_COMPRESSION_LEVEL == 2
if (*(src + matchlen) == *(o + matchlen) && ((fast_read(o, 3) ^ fetch) & 0xffffff) == 0 && o < src - MINOFFSET)
#endif
{
m = 3;
while (*(o + m) == *(src + m) && m < remaining)
m++;
#if QLZ_COMPRESSION_LEVEL == 3
if ((m > matchlen) || (m == matchlen && o > offset2))
#elif QLZ_COMPRESSION_LEVEL == 2
if (m > matchlen)
#endif
{
offset2 = o;
matchlen = m;
best_k = k;
}
}
}
o = offset2;
state->hash[hash].offset[c & (QLZ_POINTERS - 1)] = src;
c++;
state->hash_counter[hash] = c;
#if QLZ_COMPRESSION_LEVEL == 3
if (matchlen > 2 && src - o < 131071)
{
ui32 u;
size_t offset = src - o;
for (u = 1; u < matchlen; u++)
{
hash = hashat(src + u);
c = state->hash_counter[hash]++;
state->hash[hash].offset[c & (QLZ_POINTERS - 1)] = src + u;
}
cword_val = (cword_val >> 1) | (1U << 31);
src += matchlen;
if (matchlen == 3 && offset <= 63)
{
*dst = (unsigned char)(offset << 2);
dst++;
}
else if (matchlen == 3 && offset <= 16383)
{
ui32 f = (ui32)((offset << 2) | 1);
fast_write(f, dst, 2);
dst += 2;
}
else if (matchlen <= 18 && offset <= 1023)
{
ui32 f = ((matchlen - 3) << 2) | ((ui32)offset << 6) | 2;
fast_write(f, dst, 2);
dst += 2;
}
else if (matchlen <= 33)
{
ui32 f = ((matchlen - 2) << 2) | ((ui32)offset << 7) | 3;
fast_write(f, dst, 3);
dst += 3;
}
else
{
ui32 f = ((matchlen - 3) << 7) | ((ui32)offset << 15) | 3;
fast_write(f, dst, 4);
dst += 4;
}
}
else
{
*dst = *src;
src++;
dst++;
cword_val = (cword_val >> 1);
}
#elif QLZ_COMPRESSION_LEVEL == 2
if (matchlen > 2)
{
cword_val = (cword_val >> 1) | (1U << 31);
src += matchlen;
if (matchlen < 10)
{
ui32 f = best_k | ((matchlen - 2) << 2) | (hash << 5);
fast_write(f, dst, 2);
dst += 2;
}
else
{
ui32 f = best_k | (matchlen << 16) | (hash << 5);
fast_write(f, dst, 3);
dst += 3;
}
}
else
{
*dst = *src;
src++;
dst++;
cword_val = (cword_val >> 1);
}
#endif
}
#endif
}
while (src <= last_byte)
{
if ((cword_val & 1) == 1)
{
fast_write((cword_val >> 1) | (1U << 31), cword_ptr, CWORD_LEN);
cword_ptr = dst;
dst += CWORD_LEN;
cword_val = 1U << 31;
}
#if QLZ_COMPRESSION_LEVEL < 3
if (src <= last_byte - 3)
{
#if QLZ_COMPRESSION_LEVEL == 1
ui32 hash, fetch;
fetch = fast_read(src, 3);
hash = hash_func(fetch);
state->hash[hash].offset = CAST(src - OFFSET_BASE);
state->hash[hash].cache = fetch;
#elif QLZ_COMPRESSION_LEVEL == 2
ui32 hash;
unsigned char c;
hash = hashat(src);
c = state->hash_counter[hash];
state->hash[hash].offset[c & (QLZ_POINTERS - 1)] = src;
c++;
state->hash_counter[hash] = c;
#endif
}
#endif
*dst = *src;
src++;
dst++;
cword_val = (cword_val >> 1);
}
while ((cword_val & 1) != 1)
cword_val = (cword_val >> 1);
fast_write((cword_val >> 1) | (1U << 31), cword_ptr, CWORD_LEN);
// min. size must be 9 bytes so that the qlz_size functions can take 9 bytes as argument
return dst - destination < 9 ? 9 : dst - destination;
}
static size_t qlz_decompress_core(const unsigned char *source, unsigned char *destination, size_t size, qlz_state_decompress *state, const unsigned char *history)
{
const unsigned char *src = source + qlz_size_header((const char *)source);
unsigned char *dst = destination;
const unsigned char *last_destination_byte = destination + size - 1;
ui32 cword_val = 1;
const unsigned char *last_matchstart = last_destination_byte - UNCONDITIONAL_MATCHLEN_DECOMPRESSOR - UNCOMPRESSED_END;
unsigned char *last_hashed = destination - 1;
const unsigned char *last_source_byte = source + qlz_size_compressed((const char *)source) - 1;
static const ui32 bitlut[16] = {4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0};
(void) last_source_byte;
(void) last_hashed;
(void) state;
(void) history;
for (;;)
{
ui32 fetch;
if (cword_val == 1)
{
#ifdef QLZ_MEMORY_SAFE
if (src + CWORD_LEN - 1 > last_source_byte)
return 0;
#endif
cword_val = fast_read(src, CWORD_LEN);
src += CWORD_LEN;
}
#ifdef QLZ_MEMORY_SAFE
if (src + 4 - 1 > last_source_byte)
return 0;
#endif
fetch = fast_read(src, 4);
if ((cword_val & 1) == 1)
{
ui32 matchlen;
const unsigned char *offset2;
#if QLZ_COMPRESSION_LEVEL == 1
ui32 hash;
cword_val = cword_val >> 1;
hash = (fetch >> 4) & 0xfff;
offset2 = (const unsigned char *)(size_t)state->hash[hash].offset;
if ((fetch & 0xf) != 0)
{
matchlen = (fetch & 0xf) + 2;
src += 2;
}
else
{
matchlen = *(src + 2);
src += 3;
}
#elif QLZ_COMPRESSION_LEVEL == 2
ui32 hash;
unsigned char c;
cword_val = cword_val >> 1;
hash = (fetch >> 5) & 0x7ff;
c = (unsigned char)(fetch & 0x3);
offset2 = state->hash[hash].offset[c];
if ((fetch & (28)) != 0)
{
matchlen = ((fetch >> 2) & 0x7) + 2;
src += 2;
}
else
{
matchlen = *(src + 2);
src += 3;
}
#elif QLZ_COMPRESSION_LEVEL == 3
ui32 offset;
cword_val = cword_val >> 1;
if ((fetch & 3) == 0)
{
offset = (fetch & 0xff) >> 2;
matchlen = 3;
src++;
}
else if ((fetch & 2) == 0)
{
offset = (fetch & 0xffff) >> 2;
matchlen = 3;
src += 2;
}
else if ((fetch & 1) == 0)
{
offset = (fetch & 0xffff) >> 6;
matchlen = ((fetch >> 2) & 15) + 3;
src += 2;
}
else if ((fetch & 127) != 3)
{
offset = (fetch >> 7) & 0x1ffff;
matchlen = ((fetch >> 2) & 0x1f) + 2;
src += 3;
}
else
{
offset = (fetch >> 15);
matchlen = ((fetch >> 7) & 255) + 3;
src += 4;
}
offset2 = dst - offset;
#endif
#ifdef QLZ_MEMORY_SAFE
if (offset2 < history || offset2 > dst - MINOFFSET - 1)
return 0;
if (matchlen > (ui32)(last_destination_byte - dst - UNCOMPRESSED_END + 1))
return 0;
#endif
memcpy_up(dst, offset2, matchlen);
dst += matchlen;
#if QLZ_COMPRESSION_LEVEL <= 2
update_hash_upto(state, &last_hashed, dst - matchlen);
last_hashed = dst - 1;
#endif
}
else
{
if (dst < last_matchstart)
{
unsigned int n = bitlut[cword_val & 0xf];
#ifdef X86X64
*(ui32 *)dst = *(ui32 *)src;
#else
memcpy_up(dst, src, 4);
#endif
cword_val = cword_val >> n;
dst += n;
src += n;
#if QLZ_COMPRESSION_LEVEL <= 2
update_hash_upto(state, &last_hashed, dst - 3);
#endif
}
else
{
while (dst <= last_destination_byte)
{
if (cword_val == 1)
{
src += CWORD_LEN;
cword_val = 1U << 31;
}
#ifdef QLZ_MEMORY_SAFE
if (src >= last_source_byte + 1)
return 0;
#endif
*dst = *src;
dst++;
src++;
cword_val = cword_val >> 1;
}
#if QLZ_COMPRESSION_LEVEL <= 2
update_hash_upto(state, &last_hashed, last_destination_byte - 3); // todo, use constant
#endif
return size;
}
}
}
}
size_t qlz_compress(const void *source, char *destination, size_t size, qlz_state_compress *state)
{
size_t r;
ui32 compressed;
size_t base;
if (size == 0 || size > 0xffffffff - 400)
return 0;
if (size < 216)
base = 3;
else
base = 9;
#if QLZ_STREAMING_BUFFER > 0
if (state->stream_counter + size - 1 >= QLZ_STREAMING_BUFFER)
#endif
{
reset_table_compress(state);
r = base + qlz_compress_core((const unsigned char *)source, (unsigned char *)destination + base, size, state);
#if QLZ_STREAMING_BUFFER > 0
reset_table_compress(state);
#endif
if (r == base)
{
memcpy(destination + base, source, size);
r = size + base;
compressed = 0;
}
else
{
compressed = 1;
}
state->stream_counter = 0;
}
#if QLZ_STREAMING_BUFFER > 0
else
{
unsigned char *src = state->stream_buffer + state->stream_counter;
memcpy(src, source, size);
r = base + qlz_compress_core(src, (unsigned char *)destination + base, size, state);
if (r == base)
{
memcpy(destination + base, src, size);
r = size + base;
compressed = 0;
reset_table_compress(state);
}
else
{
compressed = 1;
}
state->stream_counter += size;
}
#endif
if (base == 3)
{
*destination = (unsigned char)(0 | compressed);
*(destination + 1) = (unsigned char)r;
*(destination + 2) = (unsigned char)size;
}
else
{
*destination = (unsigned char)(2 | compressed);
fast_write((ui32)r, destination + 1, 4);
fast_write((ui32)size, destination + 5, 4);
}
*destination |= (QLZ_COMPRESSION_LEVEL << 2);
*destination |= (1 << 6);
*destination |= ((QLZ_STREAMING_BUFFER == 0 ? 0 : (QLZ_STREAMING_BUFFER == 100000 ? 1 : (QLZ_STREAMING_BUFFER == 1000000 ? 2 : 3))) << 4);
// 76543210
// 01SSLLHC
return r;
}
size_t qlz_decompress(const char *source, void *destination, qlz_state_decompress *state)
{
size_t dsiz = qlz_size_decompressed(source);
size_t csiz = qlz_size_compressed(source);
#if QLZ_STREAMING_BUFFER > 0
if (state->stream_counter + qlz_size_decompressed(source) - 1 >= QLZ_STREAMING_BUFFER)
#endif
{
if ((*source & 1) == 1)
{
reset_table_decompress(state);
dsiz = qlz_decompress_core((const unsigned char *)source, (unsigned char *)destination, dsiz, state, (const unsigned char *)destination);
}
else
{
if (csiz != dsiz + qlz_size_header(source))
return 0;
memcpy(destination, source + qlz_size_header(source), dsiz);
}
state->stream_counter = 0;
reset_table_decompress(state);
}
#if QLZ_STREAMING_BUFFER > 0
else
{
unsigned char *dst = state->stream_buffer + state->stream_counter;
if ((*source & 1) == 1)
{
dsiz = qlz_decompress_core((const unsigned char *)source, dst, dsiz, state, (const unsigned char *)state->stream_buffer);
}
else
{
// if(csiz != dsiz + qlz_size_header(source))
// return 0;
memcpy(dst, source + qlz_size_header(source), dsiz);
reset_table_decompress(state);
}
memcpy(destination, dst, dsiz);
state->stream_counter += dsiz;
}
#endif
return dsiz;
}

2
polymer/eduke32/build/src/texcache.c
View file

@ -1,7 +1,7 @@
#ifdef USE_OPENGL
#include "build.h"
#include "quicklz.h"
#include "lz4.h"
#include "hightile.h"
#include "polymost.h"
#include "texcache.h"

4
polymer/eduke32/eduke32.vcxproj
View file

@ -99,7 +99,7 @@
<ClInclude Include="build\include\polymost.h" />
<ClInclude Include="build\include\pragmas.h" />
<ClInclude Include="build\include\prlights.h" />
<ClInclude Include="build\include\quicklz.h" />
<ClInclude Include="build\include\lz4.h" />
<ClInclude Include="build\include\rawinput.h" />
<ClInclude Include="build\include\scriptfile.h" />
<ClInclude Include="build\include\sdlayer.h" />
@ -212,7 +212,7 @@
<ClCompile Include="build\src\polymer.c" />
<ClCompile Include="build\src\polymost.c" />
<ClCompile Include="build\src\pragmas.c" />
<ClCompile Include="build\src\quicklz.c" />
<ClCompile Include="build\src\lz4.c" />
<ClCompile Include="build\src\rawinput.c" />
<ClCompile Include="build\src\scriptfile.c" />
<ClCompile Include="build\src\sdlayer.c" />

4
polymer/eduke32/eduke32.vcxproj.filters
View file

@ -138,7 +138,7 @@
<ClInclude Include="build\include\pragmas.h">
<Filter>build\headers</Filter>
</ClInclude>
<ClInclude Include="build\include\quicklz.h">
<ClInclude Include="build\include\lz4.h">
<Filter>build\headers</Filter>
</ClInclude>
<ClInclude Include="build\include\scriptfile.h">
@ -479,7 +479,7 @@
<ClCompile Include="build\src\pragmas.c">
<Filter>build\source</Filter>
</ClCompile>
<ClCompile Include="build\src\quicklz.c">
<ClCompile Include="build\src\lz4.c">
<Filter>build\source</Filter>
</ClCompile>
<ClCompile Include="build\src\scriptfile.c">

10
polymer/eduke32/source/astub.c
View file

@ -47,7 +47,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#include "fx_man.h"
#include "macros.h"
#include "quicklz.h"
#include "lz4.h"
#include "m32script.h"
#include "m32def.h"
@ -410,7 +410,7 @@ static void create_compressed_block(int32_t idx, const void *srcdata, uint32_t s
if (!mapstate->sws[idx]) { initprintf("OUT OF MEM in undo/redo\n"); osdcmd_quit(NULL); }
// compress & realloc
j = qlz_compress(srcdata, mapstate->sws[idx]+4, size, state_compress);
j = LZ4_compress((const char*)srcdata, mapstate->sws[idx]+4, size);
mapstate->sws[idx] = (char *)Brealloc(mapstate->sws[idx], 4 + j);
if (!mapstate->sws[idx]) { initprintf("COULD not realloc in undo/redo\n"); osdcmd_quit(NULL); }
@ -582,13 +582,13 @@ int32_t map_undoredo(int32_t dir)
if (mapstate->num[0])
{
// restore sector[]
qlz_decompress(mapstate->sws[0]+4, sector, state_decompress);
LZ4_decompress_fast(mapstate->sws[0]+4, (char*)sector, numsectors*sizeof(sectortype));
if (mapstate->num[1]) // restore wall[]
qlz_decompress(mapstate->sws[1]+4, wall, state_decompress);
LZ4_decompress_fast(mapstate->sws[1]+4, (char*)wall, numwalls*sizeof(walltype));
if (mapstate->num[2]) // restore sprite[]
qlz_decompress(mapstate->sws[2]+4, sprite, state_decompress);
LZ4_decompress_fast(mapstate->sws[2]+4, (char*)sprite, (mapstate->num[2])*sizeof(spritetype));
}
// insert sprites

2
polymer/eduke32/source/game.c
View file

@ -47,7 +47,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#include "crc32.h"
#include "hightile.h"
#include "control.h"
#include "quicklz.h"
#include "lz4.h"
#include "net.h"
#include "premap.h"
#include "gameexec.h"

20
polymer/eduke32/source/net.c
View file

@ -29,7 +29,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#include "input.h"
#include "enet/enet.h"
#include "quicklz.h"
#include "lz4.h"
#include "crc32.h"
ENetHost *g_netServer = NULL;
@ -74,6 +74,7 @@ netmapstate_t *g_mapStateHistory[NET_REVISIONS];
char tempnetbuf[sizeof(netmapstate_t) + 400];
netmapdiff_t tempMapDiff;
#pragma pack(pop)
#define tempnetbufsize sizeof(tempnetbuf)
static void P_RemovePlayer(int32_t p)
{
@ -1051,11 +1052,21 @@ void Net_SendMapUpdate(void)
diffsize += tempMapDiff.numActors * sizeof(netactor_t);
diffsize += tempMapDiff.numToDelete * sizeof(int32_t);
packetsize = qlz_compress(&tempMapDiff, &tempnetbuf[1], diffsize, state_compress);
packetsize = LZ4_compress_limitedOutput((const char*)&tempMapDiff, &tempnetbuf[5], diffsize, tempnetbufsize - 5);
if (packetsize == 0)
return;
// apply header
tempnetbuf[0] = PACKET_MAP_STREAM;
packetsize++;
// apply uncompressed size
tempnetbuf[1] = (diffsize & 0x000000FF);
tempnetbuf[2] = (diffsize & 0x0000FF00) >> 8;
tempnetbuf[3] = (diffsize & 0x00FF0000) >> 16;
tempnetbuf[4] = (diffsize & 0xFF000000) >> 24;
packetsize += 5;
//initprintf("update packet size: %d - revision (%d->%d) - num actors: %d\n", packetsize, g_player[playeridx].revision, g_netMapRevision, tempMapDiff.numActors);
@ -1066,7 +1077,8 @@ void Net_SendMapUpdate(void)
void Net_ReceiveMapUpdate(ENetEvent *event)
{
char *pktBuf = (char *) event->packet->data;
qlz_decompress(&pktBuf[1], &tempMapDiff, state_decompress);
uint32_t diffsize = (pktBuf[4] << 24) | (pktBuf[3] << 16) | (pktBuf[2] << 8) | (pktBuf[1]);
LZ4_decompress_safe(&pktBuf[5], (char*)&tempMapDiff, diffsize, sizeof(netmapdiff_t));
Net_RestoreMapState();
//initprintf("Update packet size: %d - num actors: %d\n", event->packet->dataLength, tempMapDiff.numActors);