test/javax/sound/midi/Gervill/SoftTuning/Load1.java

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 * accompanied this code).
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/* @test
   @summary Test SoftTuning load method */

import java.io.UnsupportedEncodingException;

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

import com.sun.media.sound.*;

public class Load1 {

    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.shtml
        // 0x01 BULK TUNING DUMP
        SoftTuning tuning = new SoftTuning();
        byte[] name;
        name = "Testing123      ".getBytes("ascii");

        int[] msg = new int[24+3*128];
        int[] head = {0xf0,0x7e,0x7f,0x08,0x01,0x00};
        int ox = 0;
        for (int i = 0; i < head.length; i++)
            msg[ox++] = head[i];
        for (int i = 0; i < name.length; i++)
            msg[ox++] = name[i];
        for (int i = 0; i < 128; i++) {
            msg[ox++] = i;
            msg[ox++] = 64;
            msg[ox++] = 0;
        }

        // Calc checksum
        int x = msg[1] & 0xFF; // 7E
        x = x ^ (msg[2] & 0xFF); // <device ID>
        x = x ^ (msg[4] & 0xFF); // nn
        x = x ^ (msg[5] & 0xFF); // tt
        for (int i = 22; i < msg.length - 2; i++)
            x = x ^ (msg[i] & 0xFF);
        msg[ox++] = (x & 127);

        msg[ox++] = 0xf7;
        byte[] bmsg = new byte[msg.length];
        for (int i = 0; i < bmsg.length; i++)
            bmsg[i] = (byte)msg[i];

        tuning.load(bmsg);
        assertEquals(tuning.getName(), "Testing123      ");
        double[] tunings = tuning.getTuning();
        for (int i = 0; i < tunings.length; i++)
            assertTrue(Math.abs(tunings[i]-(i*100 + 50)) < 0.00001);

        // Check if tuning fails if checksum is wrong
        /*
        msg[msg.length - 2] += 10;
        for (int i = 0; i < bmsg.length; i++)
            bmsg[i] = (byte)msg[i];
        tuning = new SoftTuning();
        tuning.load(bmsg);
        assertTrue(!tuning.getName().equals("Testing123      "));
        */
    }
}