#ifndef __GCircleQueue_H__
#define __GCircleQueue_H__

#include <QMutex>
#include <QMutexLocker>
#include <QWaitCondition>

#include <Windows.h>

const   int     DEFAULT_QUEUE_SIZE = 16;                     //默认队列长度

class   GCycleQueue
{
public:
    GCycleQueue();
    virtual         ~GCycleQueue();
    bool            InitQueue(int nFrameSize, int nQueueSize = DEFAULT_QUEUE_SIZE);
    bool            PushBack(unsigned char* pFrameData, int nFrameSize, int& nRes);
    bool            GetFront(unsigned char* pFrameData, int& nFrameSize);
    unsigned char*  GetFrontPoint();
    bool            GetBack(unsigned char* pFrameData, int& nFrameSize);
    bool            IsEmpty();
    void            Clear();
    int             Size();
protected:
    void            DestroyQueue();

private:
    const   int     m_nFrameSize;
    int             m_nQueueSize;
    unsigned char*  m_ptrFrameQueue;
//    unsigned char (*m_ptrFrameQueue)[MAX_FRAME_SIZE];
    int             m_nFront;
    int             m_nTail;
    QMutex          m_mutex;
};

#endif // !__GCircleQueue_H__