chxavrandom.h

来自「symbian 下的helix player源代码」· C头文件 代码 · 共 65 行

/*============================================================================*
 *
 * (c) 1995-2002 RealNetworks, Inc. Patents pending. All rights reserved.
 *
 *============================================================================*/
 
#ifndef __RANDOM_H__
#define __RANDOM_H__

#include "chxavvector.h"

class RandomSequence {
public:
    RandomSequence(unsigned int seed = 1, int type=3);
    
    unsigned int Random();
    void SRandom(unsigned int seed);

    static const unsigned int RandomMax;
private:    
    class LCG {
    public:
	LCG(unsigned int seed);
	unsigned int Random();
	void SRandom(unsigned int seed);
    private:
	unsigned int m_seed;
    };

    class LFG {
    public:
	LFG();
	LFG(unsigned int seed,int type);
	unsigned int Random();
	void SRandom(unsigned int seed);

	class StateGen {
	public:
	    StateGen(unsigned int seed);
	    unsigned int Random();
	private:
	    unsigned int m_seed;	   
	};
	
	class SeqParams {
	public:
	    int m_degree;
	    int m_seperation;
	};

	const static SeqParams zm_seqParams[];

	int m_degree;
	int m_sep;
	int m_fptr;
	int m_rptr;
	CHXAvVector<unsigned int> m_state;
    };

    int m_type;
    LCG m_lcg;
    LFG m_lfg;
};
#endif