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/************
*
* This file is part of a tool for producing 3D content in the PRC format.
* Copyright (C) 2008 Orest Shardt <shardtor (at) gmail dot com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*************/
#ifndef __PRC_BIT_STREAM_H
#define __PRC_BIT_STREAM_H
#ifdef _MSC_VER
#include <stdio.h>
#if _MSC_VER >= 1600
#include <stdint.h>
#else
typedef signed char int8_t;
typedef signed short int16_t;
typedef signed long int32_t;
typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
typedef unsigned long uint32_t;
#endif // _MSC_VER >= 1600
#else
#include <inttypes.h>
#endif // _MSC_VER
#include <string>
#include <iostream>
#include <stdlib.h>
#define CHUNK_SIZE (1024)
// Is this a reasonable initial size?
class PRCbitStream
{
public:
PRCbitStream(uint8_t*& buff, unsigned int l) : byteIndex(0), bitIndex(0),
allocatedLength(l), data(buff), compressed(false)
{
if(data == 0)
{
getAChunk();
}
}
unsigned int getSize() const;
uint8_t* getData();
PRCbitStream& operator <<(const std::string&);
PRCbitStream& operator <<(bool);
PRCbitStream& operator <<(uint32_t);
PRCbitStream& operator <<(uint8_t);
PRCbitStream& operator <<(int32_t);
PRCbitStream& operator <<(double);
PRCbitStream& operator <<(const char*);
void compress();
void write(std::ostream &out) const;
private:
void writeBit(bool);
void writeBits(uint32_t,uint8_t);
void writeByte(uint8_t);
void nextByte();
void nextBit();
void getAChunk();
// bitIndex is "big endian", zero based, location of next bit to write
unsigned int byteIndex,bitIndex;
unsigned int allocatedLength;
uint8_t*& data;
bool compressed;
uint32_t compressedDataSize;
};
#endif // __PRC_BIT_STREAM_H
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