mirror of
https://github.com/ptitSeb/Serious-Engine
synced 2024-11-26 04:05:53 +01:00
83 lines
3.0 KiB
C
83 lines
3.0 KiB
C
|
/* Copyright (c) 2002-2012 Croteam Ltd. All rights reserved. */
|
||
|
|
|
||
|
|
#ifndef SE_INCL_COMPRESSION_H
|
||
|
|
#define SE_INCL_COMPRESSION_H
|
||
|
|
#ifdef PRAGMA_ONCE
|
||
|
|
#pragma once
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Abstract base class for objects that can compress memory blocks.
|
||
|
|
*/
|
||
|
|
class CCompressor {
|
||
|
|
public:
|
||
|
|
/* Calculate needed size for destination buffer when packing memory with given compression. */
|
||
|
|
virtual SLONG NeededDestinationSize(SLONG slSourceSize) = 0;
|
||
|
|
|
||
|
|
// on entry, slDstSize holds maximum size of output buffer,
|
||
|
|
// on exit, it is filled with resulting size
|
||
|
|
/* Pack a chunk of data using given compression. */
|
||
|
|
virtual BOOL Pack(const void *pvSrc, SLONG slSrcSize, void *pvDst, SLONG &slDstSize) = 0;
|
||
|
|
/* Unpack a chunk of data using given compression. */
|
||
|
|
virtual BOOL Unpack(const void *pvSrc, SLONG slSrcSize, void *pvDst, SLONG &slDstSize) = 0;
|
||
|
|
|
||
|
|
/* Pack/unpack from stream to stream. */
|
||
|
|
void UnpackStream_t(CTMemoryStream &strmSrc, CTStream &strmDst); // throw char *
|
||
|
|
void PackStream_t(CTMemoryStream &strmSrc, CTStream &strmDst); // throw char *
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Compressor for compressing memory blocks using RLE BYTE-BYTE compression
|
||
|
|
*/
|
||
|
|
class CRLEBBCompressor : public CCompressor {
|
||
|
|
public:
|
||
|
|
/* Calculate needed size for destination buffer when packing memory. */
|
||
|
|
SLONG NeededDestinationSize(SLONG slSourceSize);
|
||
|
|
|
||
|
|
// on entry, slDstSize holds maximum size of output buffer,
|
||
|
|
// on exit, it is filled with resulting size
|
||
|
|
/* Pack a chunk of data using given compression. */
|
||
|
|
BOOL Pack(const void *pvSrc, SLONG slSrcSize, void *pvDst, SLONG &slDstSize);
|
||
|
|
/* Unpack a chunk of data using given compression. */
|
||
|
|
BOOL Unpack(const void *pvSrc, SLONG slSrcSize, void *pvDst, SLONG &slDstSize);
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Compressor for compressing memory blocks using LZ compression
|
||
|
|
* (uses LZRW1 - a modification by Ross Williams)
|
||
|
|
*/
|
||
|
|
class CLZCompressor : public CCompressor {
|
||
|
|
public:
|
||
|
|
/* Calculate needed size for destination buffer when packing memory. */
|
||
|
|
SLONG NeededDestinationSize(SLONG slSourceSize);
|
||
|
|
|
||
|
|
// on entry, slDstSize holds maximum size of output buffer,
|
||
|
|
// on exit, it is filled with resulting size
|
||
|
|
/* Pack a chunk of data using given compression. */
|
||
|
|
BOOL Pack(const void *pvSrc, SLONG slSrcSize, void *pvDst, SLONG &slDstSize);
|
||
|
|
/* Unpack a chunk of data using given compression. */
|
||
|
|
BOOL Unpack(const void *pvSrc, SLONG slSrcSize, void *pvDst, SLONG &slDstSize);
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Compressor for compressing memory blocks using zlib compression
|
||
|
|
* (zlib uses LZ77 - algorithm)
|
||
|
|
*/
|
||
|
|
class CzlibCompressor : public CCompressor {
|
||
|
|
public:
|
||
|
|
/* Calculate needed size for destination buffer when packing memory. */
|
||
|
|
SLONG NeededDestinationSize(SLONG slSourceSize);
|
||
|
|
|
||
|
|
// on entry, slDstSize holds maximum size of output buffer,
|
||
|
|
// on exit, it is filled with resulting size
|
||
|
|
/* Pack a chunk of data using given compression. */
|
||
|
|
BOOL Pack(const void *pvSrc, SLONG slSrcSize, void *pvDst, SLONG &slDstSize);
|
||
|
|
/* Unpack a chunk of data using given compression. */
|
||
|
|
BOOL Unpack(const void *pvSrc, SLONG slSrcSize, void *pvDst, SLONG &slDstSize);
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* include-once check. */
|
||
|
|
|