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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.io;

import jm.JMC;
import jm.audio.AOException;
import jm.audio.AudioObject;

import java.io.IOException;
import java.io.RandomAccessFile;

/**
 * Print synthesis data to the standard output.
 *
 * @author Andrew Brown
 * @version 1.0, Sun Feb 25 18:42:42  2001
 */
public final class PrintOut extends AudioObject implements JMC {
    //----------------------------------------------
    // ATTRIBUTES
    //----------------------------------------------
        /* the number of charracters across which to display the wave */
    private int width;

    //----------------------------------------------
    // Constructors
    //----------------------------------------------

    /**
     * Excepts a single Audio Object only.
     */
    public PrintOut(AudioObject ao) {
        this(ao, 80);
    }

    /**
     * Excepts an Audio Object and screen width.
     */
    public PrintOut(AudioObject ao, int width) {
        super(ao, "[PrintOut]");
        this.width = width;
        // create dummy temp file to avoid crash
        try {
            RandomAccessFile f = new RandomAccessFile("jmusic.tmp",
                    "rw");
            try {
                f.close();
            } catch (IOException e) {
            }
            ;
        } catch (IOException e) {
        }
        ;
    }

    public void finalize() {

    }

    //----------------------------------------------
    // Protected Methods
    //----------------------------------------------

    /**
     * Write any incoming samples out to disk
     * using the position (which is set by the note and
     * then moved appropriately for each sample written)
     * to place the sample into the RAF.

     * NOTE: Remember that only one AudioObject can ever
     * be an input to this Object.
     */
    public int work(float[] buffer) throws AOException {
        int returned = this.previous[0].nextWork(buffer);
        for (int i = 0; i < returned; i++) {
            float sample = buffer[i];
            //fill left side of dot
            String dot = "";

            if (i % ((int) ((double) sampleRate / 8000.0) + 1) == 0) {
                int counter = 0;
                for (int j = 0; j < (int) ((sample + 1.0) * (width * 0.5 - 4)); j++) {
                    dot += " ";
                    counter++;
                }
                // draw the dot
                dot += "o";
                // fill right side of dot
                for (int k = counter; k < width - 4; k++) {
                    dot += " ";
                }
                // add value
                sample *= 1000;
                dot += (double) ((int) (sample) / 1000.0);
                System.out.println(dot);
            }
        }
        return returned;
    }
}