#ifndef LINEARBUFFER_H
#define LINEARBUFFER_H

template <typename Scalar, int _size> class LinearBuffer {

private:

	Scalar _data[_size];

	uint16_t head = 0;

public:

	void add(const Scalar value) {
		if (head >= _size) {return;}
		_data[head] = value;
		++head;
	}

	/** get the number of used entries */
	uint16_t getNumUsed() const {
		return head;
	}

	/** get the number of used bytes */
	uint32_t getBytesUsed() const {
		return getNumUsed() * sizeof(Scalar);
	}

	uint16_t size() const {
		return _size;
	}

	/** set the buffer to empty */
	void reset() {
		head = 0;
	}

	const Scalar* data() const {
		return _data;
	}

	/** constant array access */
	const Scalar& operator [] (const size_t idx) const {
		return _data[idx];
	}

	/** true if the buffer is currently empty */
	bool isEmpty() const {
		return head == 0;
	}

	bool isFull() const {
		return head >= size;
	}

};

#endif // LINEARBUFFER_H