jdk-24/test/jdk/javax/sound/midi/Gervill/SoftTuning/Load9.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/* @test
   @summary Test SoftTuning load method
   @modules java.desktop/com.sun.media.sound
*/

import javax.sound.midi.MidiUnavailableException;
import javax.sound.midi.Patch;
import javax.sound.sampled.*;

import com.sun.media.sound.*;

public class Load9 {

    private static void assertEquals(Object a, Object b) throws Exception
    {
        if(!a.equals(b))
            throw new RuntimeException("assertEquals fails!");
    }

    private static void assertTrue(boolean value) throws Exception
    {
        if(!value)
            throw new RuntimeException("assertTrue fails!");
    }

    public static void main(String[] args) throws Exception {
        // http://www.midi.org/about-midi/tuning-scale.shtml
        // 0x09 scale/octave tuning 2-byte form (Non Real-Time/REAL-TIME)
        SoftTuning tuning = new SoftTuning();
        int[] msg = {0xf0,0x7f,0x7f,0x08,0x09,0x03,0x7f,0x7f,
                5,10,15,20,25,30,35,40,45,50,51,52,
                5,10,15,20,25,30,35,40,45,50,51,52,
                0xf7};
        int[] oct = {5,10,15,20,25,30,35,40,45,50,51,52,5,10,15,20,25,30,35,40,45,50,51,52};
        byte[] bmsg = new byte[msg.length];
        for (int i = 0; i < bmsg.length; i++)
            bmsg[i] = (byte)msg[i];
        tuning.load(bmsg);
        double[] tunings = tuning.getTuning();
        for (int i = 0; i < tunings.length; i++)
        {
            double c = (oct[(i%12)*2]*128 + oct[(i%12)*2+1] -8192)*(100.0/8192.0);
            assertTrue(Math.abs(tunings[i]-(i*100 + (c))) < 0.00001);
        }
    }
}