File content as of revision 1:b24970e4c038:

#ifndef CIRCULARBUFFER_H
#define CIRCULARBUFFER_H



template <typename T, int S>
class CircularBuffer
{
public:
    CircularBuffer() { currentIndex = 0; }
    T read(int index);
    T& operator[](int index);
    void write(T value, int index);
    void push(T value);
    void revert(int amount);
    
protected:
    T data[S];
    int currentIndex;
};



template <typename T, int S>
inline T CircularBuffer<T, S>::read(int index)
{
    int realIndex = (currentIndex - index) % S;
    if (realIndex < 0) realIndex += S;
    return data[realIndex];
}



template <typename T, int S>
inline T& CircularBuffer<T, S>::operator[](int index)
{
    int realIndex = (currentIndex - index) % S;
    if (realIndex < 0) realIndex += S;
    return data[realIndex];
}



template <typename T, int S>
inline void CircularBuffer<T, S>::write(T value, int index)
{
    int realIndex = (currentIndex - index) % S;
    if (realIndex < 0) realIndex += S;
    data[realIndex] = value;
}



template <typename T, int S>
inline void CircularBuffer<T, S>::push(T value)
{
    currentIndex = ++currentIndex % S;
    data[currentIndex] = value;
}



template <typename T, int S>
inline void CircularBuffer<T, S>::revert(int amount)
{
    currentIndex = currentIndex >= amount ? currentIndex - amount : currentIndex - amount + S;
}

#endif // CIRCULARBUFFER_H