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CnC_Renegade/Code/Tests/BitPackTest/Code/BitPacker.h

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C++

/*
** Command & Conquer Renegade(tm)
** Copyright 2025 Electronic Arts Inc.
**
** This program 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.
**
** This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
/****************************************************************************
*
* FILE
* $Archive: /Commando/Code/Tests/BitPackTest/Code/BitPacker.h $
*
* DESCRIPTION
* Provide variable length bit packing.
*
* PROGRAMMER
* Denzil E. Long, Jr.
*
* VERSION INFO
* $Author: Denzil_l $
* $Revision: 2 $
* $Modtime: 5/31/00 9:21a $
*
****************************************************************************/
#ifndef _BITPACKER_H_
#define _BITPACKER_H_
class BitPacker
{
public:
BitPacker();
BitPacker(void* buffer, unsigned int bufferSize);
virtual ~BitPacker();
// Set the buffer to use for read / write of bit packed data.
void SetBuffer(void* buffer, unsigned int bufferSize);
// Flush remainder bits to the stream.
// (This must be called when finished writting)
void Flush(void);
// Reset the bitpacked stream.
void Reset(void);
// Retrieve the length of the packed stream (in bytes).
unsigned int GetPackedSize(void);
// Retrieve a bit from the stream,
int GetBit(void);
// Write a bit to the stream
bool PutBit(int value);
// Retrieve a series of bits from the stream (Max = 32)
int GetBits(unsigned long& outBits, unsigned int numBits);
// Write a series of bits to the stream (Max = 32)
int PutBits(unsigned long bits, unsigned int numBits);
private:
unsigned char* mBuffer;
unsigned int mBufferSize;
unsigned int mBytePosition;
unsigned int mBitMask;
unsigned char mStore;
};
#endif // _BITPACKER_H_