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/*



Copyright (C) 2000 Andrew Sorensen & Andrew Brown

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or any
later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

package jm.audio.synth;

import jm.audio.AOException;
import jm.audio.AudioObject;
import jm.audio.math.RealFloatFFT_Radix2;

/**
 * An FFT transformation from time to frq.
 *
 * @author Andrew Sorensen
 * @version 1.0, Sun Feb 25 18:42:46  2001
 */

public final class FFT extends AudioObject {
    //----------------------------------------------
    // Constructors
    //----------------------------------------------

    /**
     *
     */
    public FFT(AudioObject ao) {
        super(ao, "[FFT]");
    }

    //----------------------------------------------
    // Methods
    //----------------------------------------------

    /**
     * Process each buffer of samples in turn.
     */
    public int work(float[] buffer) throws AOException {
        int returned = this.previous[0].nextWork(buffer);
        RealFloatFFT_Radix2 fft = null;
        fft = new RealFloatFFT_Radix2(inst.getBufSize());
        fft.transform(buffer);
        return returned;
    }
}