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‎.gitignore‎

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target/
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.idea/
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.mvn/
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.DS_Store
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‎LICENSE‎

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MIT License
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Copyright (c) 2025 Conifer Productions Oy
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

‎pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.coniferproductions.sevenator</groupId>
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<artifactId>sevenator</artifactId>
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<version>1.0-SNAPSHOT</version>
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<name>sevenator</name>
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<!-- FIXME change it to the project's website -->
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<url>http://www.example.com</url>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.release>17</maven.compiler.release>
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</properties>
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<dependencyManagement>
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<dependencies>
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<dependency>
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<groupId>org.junit</groupId>
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<artifactId>junit-bom</artifactId>
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<version>5.11.0</version>
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<type>pom</type>
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<scope>import</scope>
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</dependency>
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</dependencies>
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</dependencyManagement>
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<dependencies>
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter-api</artifactId>
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<scope>test</scope>
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</dependency>
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<!-- Optionally: parameterized tests support -->
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter-params</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
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<plugins>
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<!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
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<plugin>
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<artifactId>maven-clean-plugin</artifactId>
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<version>3.4.0</version>
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</plugin>
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<!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
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<plugin>
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<artifactId>maven-resources-plugin</artifactId>
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<version>3.3.1</version>
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</plugin>
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<plugin>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.13.0</version>
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</plugin>
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<plugin>
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<artifactId>maven-surefire-plugin</artifactId>
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<version>3.3.0</version>
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</plugin>
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<plugin>
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<artifactId>maven-jar-plugin</artifactId>
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<version>3.4.2</version>
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</plugin>
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<plugin>
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<artifactId>maven-install-plugin</artifactId>
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<version>3.1.2</version>
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</plugin>
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<plugin>
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<artifactId>maven-deploy-plugin</artifactId>
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<version>3.1.2</version>
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</plugin>
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<!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
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<plugin>
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<artifactId>maven-site-plugin</artifactId>
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<version>3.12.1</version>
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</plugin>
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<plugin>
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<artifactId>maven-project-info-reports-plugin</artifactId>
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<version>3.6.1</version>
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</plugin>
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</plugins>
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</pluginManagement>
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</build>
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</project>

‎src/main/java/com/coniferproductions/sevenator/App.java‎

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package com.coniferproductions.sevenator;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Paths;
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import java.util.List;
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import java.util.ArrayList;
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import java.nio.ByteOrder;
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public class App {
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public static void main(String[] args) {
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System.out.println("System byte order = " + ByteOrder.nativeOrder());
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Channel channel = new Channel(1);
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System.out.println("Channel value = " + channel);
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System.out.println(String.format("Channel = [%d, %d]", Channel.TYPE.first(), Channel.TYPE.last()));
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System.out.println("Channel contains -7? " + Channel.TYPE.contains(-7));
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System.out.println("Channel contains 10? " + Channel.TYPE.contains(10));
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Channel channel1 = new Channel(1);
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Channel channel2 = new Channel(2);
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if (channel1.equals(channel2)) {
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System.out.println("Same channel.");
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} else {
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System.out.println("Different channel.");
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}
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//RangedInteger ri = new RangedInteger(); // abstract class, can't instantiate
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//BadChannel bc = new BadChannel(10); // internally inconsistent, throws exception
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//Level level = new Level(100); // initial value out of range, throws exception
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MIDINote middleC = new MIDINote(60);
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System.out.println("Middle C is MIDI note number " + middleC.value()
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+ ", or " + middleC);
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for (int value = middleC.last(); value >= middleC.first(); value--) {
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MIDINote note = new MIDINote(value);
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MIDINote.octave = Octave.ROLAND;
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System.out.print(value + " = " + note + " / ");
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MIDINote.octave = Octave.YAMAHA;
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System.out.println(note);
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}
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System.out.println();
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System.out.println(String.format("Level = [%d, %d]", Level.TYPE.first(), Level.TYPE.last()));
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Level level1 = new Level(50);
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Level level2 = new Level(50);
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if (level1.equals(level2)) {
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System.out.println("The levels are equal.");
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} else {
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System.out.println("The levels are not equal.");
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}
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List<UInt8> data = new ArrayList<>();
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try {
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byte[] contents = Files.readAllBytes(Paths.get(args[0]));
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for (byte b : contents) {
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int value = b & 0xff;
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data.add(new UInt8(value));
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}
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System.out.printf("%02X ... %02X", contents[0], contents[contents.length - 1]);
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Message message = Message.parse(data);
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System.out.printf("%nMessage information:%n");
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System.out.printf("payload = %d bytes%n%n", message.getPayload().size());
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Header header = Header.parse(message.getPayload());
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System.out.println("Header: format = " + header.getFormat());
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System.out.println("byte count = " + header.getByteCount());
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System.out.println("channel = " + header.getChannel());
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} catch (IOException ioe) {
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ioe.printStackTrace();
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}
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/*
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for (UInt8 b : data) {
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System.out.print(String.format("%02x", b.value()));
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System.out.print(" ");
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}
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System.out.println();
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*/
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Runtime runtime = Runtime.getRuntime();
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long totalMemory = runtime.totalMemory();
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long freeMemory = runtime.freeMemory();
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long usedMemory = totalMemory - freeMemory;
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System.out.println(String.format("Total memory: %10d", totalMemory));
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System.out.println(String.format("Free memory: %10d", freeMemory));
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System.out.println(String.format("Used memory: %10d", usedMemory));
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}
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}

‎src/main/java/com/coniferproductions/sevenator/BadChannel.java‎

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package com.coniferproductions.sevenator;
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public final class BadChannel extends RangedInteger {
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public BadChannel() {
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this(1);
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}
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public BadChannel(int value) {
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super(16, 1, value);
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}
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}

‎src/main/java/com/coniferproductions/sevenator/Channel.java‎

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package com.coniferproductions.sevenator;
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public final class Channel extends RangedInteger {
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public Channel(int value) {
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super(1, 16, value);
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}
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// No redefinition of equals() since it is in the superclass.
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/*
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@Override
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public boolean equals(Object o) {
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// Identical references?
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if (o == this) {
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return true;
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}
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// Correct type and non-null?
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if (!(o instanceof Channel)) return false;
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// Cast to our type.
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Channel that = (Channel) o;
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return RangedInteger.hasEqualFields(this, that);
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}
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*/
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// Make one instance of this class as a static member,
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// so that you don't need to make an instance whenever you call
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// first(), last() or contains().
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public static final Channel TYPE = new Channel(1);
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}

‎src/main/java/com/coniferproductions/sevenator/Header.java‎

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package com.coniferproductions.sevenator;
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import java.util.List;
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public class Header {
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public enum Format {
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VOICE(0),
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CARTRIDGE(9);
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private final int format;
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Format(int format) {
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this.format = format;
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}
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public int format() {
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return this.format;
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}
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}
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private int substatus; // 0=voice/cartridge, 1=parameter
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private Channel channel;
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private Format format;
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private Short byteCount; // 14-bit number distributed evenly over two bytes
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// voice=155 (00000010011011 = 0x009B, appears as "01 1B")
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// cartridge=4096 (01000000000000 = 0x1000, appears as "20 00")
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public static Header parse(List<UInt8> data) {
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UInt8 byteCountMSB = data.get(2);
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UInt8 byteCountLSB = data.get(3);
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UInt8 channelByte = new UInt8(data.get(0).value() & 0b00001111);
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if (!Channel.TYPE.contains(channelByte.value() + 1)) {
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throw new IllegalArgumentException("MIDI channel must be 1...16");
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}
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Header header = new Header();
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UInt8 formatByte = data.get(1);
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if (formatByte.value() == 0) {
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header.format = Format.VOICE;
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} else if (formatByte.value() == 9) {
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header.format = Format.CARTRIDGE;
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} else {
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throw new IllegalArgumentException("Not a voice or a cartridge!");
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}
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header.substatus = ((data.get(0).value() >> 4) & 0b00000111);
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header.channel = new Channel(channelByte.value() + 1);
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switch (header.format) {
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case VOICE:
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header.byteCount = 155;
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break;
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case CARTRIDGE:
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header.byteCount = 4069;
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break;
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}
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return header;
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}
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public Format getFormat() {
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return this.format;
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}
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public Short getByteCount() {
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return this.byteCount;
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}
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public Channel getChannel() {
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return this.channel;
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}
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}

‎src/main/java/com/coniferproductions/sevenator/Level.java‎

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package com.coniferproductions.sevenator;
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public final class Level extends RangedInteger {
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public Level(int value) {
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super(0, 99, value);
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}
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public static final Level TYPE = new Level(0);
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}

‎src/main/java/com/coniferproductions/sevenator/MIDINote.java‎

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package com.coniferproductions.sevenator;
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public final class MIDINote extends RangedInteger {
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public static Octave octave = Octave.ROLAND;
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public MIDINote(int value) {
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super(0, 127, value);
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}
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public String name() {
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final String[] names = { "C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B" };
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int octaveOffset = MIDINote.octave.offset();
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int noteValue = this.value();
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int octaveNumber = noteValue / 12 + octaveOffset;
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String noteName = names[noteValue % 12];
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return noteName + Integer.toString(octaveNumber);
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}
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@Override
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public String toString() {
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return this.name();
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}
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}

‎src/main/java/com/coniferproductions/sevenator/MIDIVelocity.java‎

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package com.coniferproductions.sevenator;
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public final class MIDIVelocity extends RangedInteger {
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public MIDIVelocity(int value) {
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super(0, 127, value);
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}
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}

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