OpenNI 1.5.4: XnCyclicQueueT.h Source File

00001 #ifndef _XN_CYCLIC_QUEUE_T_H_
00002 #define _XN_CYCLIC_QUEUE_T_H_ 
00003 
00004 //---------------------------------------------------------------------------
00005 // Includes
00006 //---------------------------------------------------------------------------
00007 #include "XnQueueT.h"
00008 
00009 //---------------------------------------------------------------------------
00010 // Code
00011 //---------------------------------------------------------------------------
00012 
00013 template<class T, XnUInt32 TDefaultMaxDepth, class TAlloc = XnLinkedNodeDefaultAllocatorT<T> >
00014 class XnCyclicQueueT : protected XnQueueT<T, TAlloc>
00015 {
00016 public:
00017     typedef XnQueueT<T, TAlloc> Base;
00018 
00019     XnCyclicQueueT(XnUInt32 nMaxDepth = TDefaultMaxDepth) : Base(), m_nMaxDepth(nMaxDepth) {}
00020 
00021     XnCyclicQueueT(const XnCyclicQueueT& other) : Base(other) 
00022     {
00023         *this = other;
00024     }
00025 
00026     XnCyclicQueueT& operator=(const XnCyclicQueueT& other)
00027     {
00028         Base::operator=(other);
00029         m_nMaxDepth = other.m_nMaxDepth;
00030         return *this;
00031     }
00032 
00033     ~XnCyclicQueueT() {}
00034 
00035     using Base::ConstIterator;
00036     using Base::IsEmpty;
00037     using Base::Size;
00038 
00039     XnStatus SetMaxSize(XnUInt32 nMaxSize)
00040     {
00041         XnStatus nRetVal = XN_STATUS_OK;
00042         
00043         while (Size() > nMaxSize)
00044         {
00045             nRetVal = Remove(this->Begin());
00046             XN_IS_STATUS_OK(nRetVal);
00047         }
00048 
00049         m_nMaxDepth = nMaxSize;
00050 
00051         return (XN_STATUS_OK);
00052     }
00053 
00054     XnStatus Push(T const& value) 
00055     { 
00056         XnStatus nRetVal = XN_STATUS_OK;
00057         if (Size() == m_nMaxDepth)
00058         {
00059             nRetVal = Remove(this->Begin());
00060             XN_IS_STATUS_OK(nRetVal);
00061         }
00062 
00063         nRetVal = Base::Push(value); 
00064         XN_IS_STATUS_OK(nRetVal);
00065 
00066         return (XN_STATUS_OK);
00067     }
00068 
00069     using Base::Pop;
00070     using Base::Top;
00071     using Base::Begin;
00072     using Base::End;
00073 
00074 protected:
00075     XnUInt32 m_nMaxDepth;
00076 };
00077 
00078 
00079 #endif // _XN_CYCLIC_QUEUE_T_H_