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Timothee 'TTimo' Besset
2011-11-22 15:28:15 -06:00
commit fb1609f554
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neo/framework/Compressor.h Normal file
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/*
===========================================================================
Doom 3 GPL Source Code
Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).
Doom 3 Source Code is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Doom 3 Source Code is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
===========================================================================
*/
#ifndef __COMPRESSOR_H__
#define __COMPRESSOR_H__
/*
===============================================================================
idCompressor is a layer ontop of idFile which provides lossless data
compression. The compressor can be used as a regular file and multiple
compressors can be stacked ontop of each other.
===============================================================================
*/
class idCompressor : public idFile {
public:
// compressor allocation
static idCompressor * AllocNoCompression( void );
static idCompressor * AllocBitStream( void );
static idCompressor * AllocRunLength( void );
static idCompressor * AllocRunLength_ZeroBased( void );
static idCompressor * AllocHuffman( void );
static idCompressor * AllocArithmetic( void );
static idCompressor * AllocLZSS( void );
static idCompressor * AllocLZSS_WordAligned( void );
static idCompressor * AllocLZW( void );
// initialization
virtual void Init( idFile *f, bool compress, int wordLength ) = 0;
virtual void FinishCompress( void ) = 0;
virtual float GetCompressionRatio( void ) const = 0;
// common idFile interface
virtual const char * GetName( void ) = 0;
virtual const char * GetFullPath( void ) = 0;
virtual int Read( void *outData, int outLength ) = 0;
virtual int Write( const void *inData, int inLength ) = 0;
virtual int Length( void ) = 0;
virtual ID_TIME_T Timestamp( void ) = 0;
virtual int Tell( void ) = 0;
virtual void ForceFlush( void ) = 0;
virtual void Flush( void ) = 0;
virtual int Seek( long offset, fsOrigin_t origin ) = 0;
};
#endif /* !__COMPRESSOR_H__ */