#ifndef _FFT
#define _FFT

#ifndef M_PI
#define	M_PI		3.14159265358979323846  /* pi */
#endif


class fft {
	
	public:
			
		fft();
		~fft();	
		
		/* Calculate the power spectrum */
		void powerSpectrum(int start, int half, float *data, int windowSize,float *magnitude,float *phase, float *power, float *avg_power);
		/* ... the inverse */
		void inversePowerSpectrum(int start, int half, int windowSize, float *finalOut,float *magnitude,float *phase);	
		
		void processLogXScale(const float * data,unsigned int insize, double fMax,
						  float * avout, float * pkout, unsigned int outsize,
						  float f1, float f2);	
	
	
		float avout[15];
		float pkout[15];
		
};
	
	
#endif