beatbox最终版本
司马高明
//BeatBox服务器端最终版
import java.io.*;
import java.net.*;
import java.util.*;
public class MusicServer
{
ArrayList<ObjectOutputStream> clientOutputStreams;
public static void main(String [] args)
{
new MusicServer().go();
}
public class ClientHandler implements Runnable
{
ObjectInputStream in;
Socket clientSocket;
public ClientHandler(Socket socket)
{
try{
clientSocket=socket;
in=new ObjectInputStream(clientSocket.getInputStream());
}catch(Exception ex){ex.printStackTrace();}
}
public void run()//服务器接受并传送2个对象
{
Object o2=null;
Object o1=null;
try
{
while((o1=in.readObject())!=null)
{
o2=in.readObject();
System.out.println("read two Objects");
tellEveryone(o1,o2);
}
}catch(Exception ex){ex.printStackTrace();}
}
}
public void go()
{
clientOutputStreams=new ArrayList<ObjectOutputStream>();
try
{
ServerSocket serverSocket=new ServerSocket(4242);
while(true)
{
Socket clientSocket=serverSocket.accept();
ObjectOutputStream out=new ObjectOutputStream(clientSocket.getOutputStream());
clientOutputStreams.add(out);
Thread t=new Thread(new ClientHandler(clientSocket));
t.start();
System.out.println("got a connection");
}
}catch(Exception ex)
{
ex.printStackTrace();
}
}
public void tellEveryone(Object one,Object two)
{
Iterator it=clientOutputStreams.iterator();
while(it.hasNext())
{
try{
ObjectOutputStream out=(ObjectOutputStream)it.next();
out.writeObject(one);
out.writeObject(two);
}catch(Exception ex){
ex.printStackTrace();
}
}
}
}
package AppendixA;
// chapter 14
import java.awt.*;
import javax.swing.*;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import java.io.*;
import javax.sound.midi.*;
import java.util.*;
import java.awt.event.*;
import java.net.*;
public class BeatBoxFinal { // implements MetaEventListener
JPanel mainPanel;
JList incomingList;
JTextField userMessage;
ArrayList<JCheckBox> checkboxList;
int nextNum;
ObjectInputStream in;
ObjectOutputStream out;
Vector<String> listVector = new Vector<String>();
String userName ;
HashMap<String, boolean[]> otherSeqsMap = new HashMap<String, boolean[]>();
Sequencer sequencer;
Sequence sequence;
Sequence mySequence = null;
Track track;
JFrame theFrame;
String[] instrumentNames = {"Bass Drum", "Closed Hi-Hat",
"Open Hi-Hat","Acoustic Snare", "Crash Cymbal", "Hand Clap",
"High Tom", "Hi Bongo", "Maracas", "Whistle", "Low Conga",
"Cowbell", "Vibraslap", "Low-mid Tom", "High Agogo",
"Open Hi Conga"};
int[] instruments = {35,42,46,38,49,39,50,60,70,72,64,56,58,47,67,63};
public static void main (String[] args) {
new BeatBoxFinal().startUp(args[0]);
}
public void startUp(String name) {
userName = name;
try {
Socket sock = new Socket("127.0.0.1", 4242);
out = new ObjectOutputStream(sock.getOutputStream());
in = new ObjectInputStream(sock.getInputStream());
Thread remote = new Thread(new RemoteReader());
remote.start();
}
catch (Exception ex) {
System.out.println("couldn't connect - you'll have to play alone.");
}
setUpMidi();
buildGUI();
}
public void buildGUI() {
theFrame = new JFrame("Cyber BeatBox");
theFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
BorderLayout layout = new BorderLayout();
JPanel background = new JPanel(layout);
background.setBorder(BorderFactory.createEmptyBorder(10,10,10,10));
checkboxList = new ArrayList<JCheckBox>();
Box buttonBox = new Box(BoxLayout.Y_AXIS);
JButton start = new JButton("Start");
start.addActionListener(new MyStartListener());
buttonBox.add(start);
JButton stop = new JButton("Stop");
stop.addActionListener(new MyStopListener());
buttonBox.add(stop);
JButton upTempo = new JButton("Tempo Up");
upTempo.addActionListener(new MyUpTempoListener());
buttonBox.add(upTempo);
JButton downTempo = new JButton("Tempo Down");
downTempo.addActionListener(new MyDownTempoListener());
buttonBox.add(downTempo);
JButton sendIt = new JButton("sendIt");
sendIt.addActionListener(new MySendListener());
buttonBox.add(sendIt);
JButton saveIt = new JButton("Serialize It"); // new button
saveIt.addActionListener(new MySendListener());
buttonBox.add(saveIt);
userMessage = new JTextField();
buttonBox.add(userMessage);
incomingList = new JList();
incomingList.addListSelectionListener(new MyListSelectionListener());
incomingList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
JScrollPane theList = new JScrollPane(incomingList);
buttonBox.add(theList);
incomingList.setListData(listVector);
Box nameBox = new Box(BoxLayout.Y_AXIS);
for (int i = 0; i < 16; i++) {
nameBox.add(new Label(instrumentNames[i]));
}
background.add(BorderLayout.EAST, buttonBox);
background.add(BorderLayout.WEST, nameBox);
theFrame.getContentPane().add(background);
GridLayout grid = new GridLayout(16,16);
grid.setVgap(1);
grid.setHgap(2);
mainPanel = new JPanel(grid);
background.add(BorderLayout.CENTER, mainPanel);
for (int i = 0; i < 256; i++) {
JCheckBox c = new JCheckBox();
c.setSelected(false);
checkboxList.add(c);
mainPanel.add(c);
} // end loop
theFrame.setBounds(50,50,300,300);
theFrame.pack();
theFrame.setVisible(true);
} // close method
public void setUpMidi() {
try {
sequencer = MidiSystem.getSequencer();
sequencer.open();
// sequencer.addMetaEventListener(this);
sequence = new Sequence(Sequence.PPQ,4);
track = sequence.createTrack();
sequencer.setTempoInBPM(120);
} catch(Exception e) {e.printStackTrace();}
} // close method
public void buildTrackAndStart()
{
// this will hold the instruments for each vertical column,
// in other words, each tick (may have multiple instruments)
ArrayList<Integer> trackList = null;
sequence.deleteTrack(track);
track = sequence.createTrack();
for (int i = 0; i < 16; i++){
trackList = new ArrayList<Integer>();
for (int j = 0; j < 16; j++){
JCheckBox jc = (JCheckBox) checkboxList.get(j + (16 * i));
if (jc.isSelected()){
int key = instruments[i];
trackList.add(key);
}
else
{
trackList.add(null);
}
} // close inner
makeTracks(trackList);
} // close outer
track.add(makeEvent(192,9,1,0,15)); // - so we always go to full 16 beats
try {
sequencer.setSequence(sequence);
sequencer.setLoopCount(sequencer.LOOP_CONTINUOUSLY);
sequencer.start();
sequencer.setTempoInBPM(120);
} catch(Exception e) {e.printStackTrace();}
} // close method
//============================================================== inner class listeners
public class MyStartListener implements ActionListener {
public void actionPerformed(ActionEvent a) {
buildTrackAndStart();
}
}
public class MyStopListener implements ActionListener {
public void actionPerformed(ActionEvent a) {
sequencer.stop();
}
}
public class MyUpTempoListener implements ActionListener {
public void actionPerformed(ActionEvent a) {
float tempoFactor = sequencer.getTempoFactor();
sequencer.setTempoFactor((float)(tempoFactor * 1.03));
}
}
public class MyDownTempoListener implements ActionListener {
public void actionPerformed(ActionEvent a) {
float tempoFactor = sequencer.getTempoFactor();
sequencer.setTempoFactor((float)(tempoFactor * .97));
}
}
public class MySendListener implements ActionListener { // new - save
public void actionPerformed(ActionEvent a) {
// make an arraylist of just the STATE of the checkboxes
boolean[] checkboxState = new boolean[256];
for (int i = 0; i < 256; i++) {
JCheckBox check = (JCheckBox) checkboxList.get(i);
if (check.isSelected()) {
checkboxState[i] = true;
}
}
try {
out.writeObject(userName + nextNum++ + ": " + userMessage.getText());
out.writeObject(checkboxState);
} catch(Exception ex) {
ex.printStackTrace();
System.out.println("sorry dude. Could not send it to the server");
}
} // close method
} // close inner class
public class MyListSelectionListener implements ListSelectionListener {
public void valueChanged(ListSelectionEvent le) {
if (!le.getValueIsAdjusting()) {
String selected = (String) incomingList.getSelectedValue();
if (selected != null) {
boolean[] selectedState = (boolean[]) otherSeqsMap.get(selected);
changeSequence(selectedState);
sequencer.stop();
buildTrackAndStart();
}
}
}
}
/*public class RemoteReader implements Runnable
{
boolean [] checkboxState=null;
String nameToShow = null;
Object obj=null;
public void run()
{
try{
while((obj=in.readObject())!=null)
{
System.out.println("got an object from server");
System.out.println(obj.getClass());
nameToShow=(String)obj;
checkboxState=(boolean [])in.readObject();
otherSeqsMap.put(nameToShow,checkboxState);
listVector.add(nameToShow);
incomingList.setListData(listVector);
}
}catch(Exception ex){
ex.printStackTrace();
}
}
}*/
public class RemoteReader implements Runnable {
boolean[] checkboxState = null;
String nameToShow = null;
Object obj = null;
public void run() {
try {
while ((obj=in.readObject()) != null) {
System.out.println("got an object from server");
System.out.println(obj.getClass());
String nameToShow = (String) obj;
checkboxState = (boolean[]) in.readObject();
otherSeqsMap.put(nameToShow, checkboxState);
listVector.add(nameToShow);
incomingList.setListData(listVector);
}
}catch (Exception e) { e.printStackTrace(); }
}
}
//==============================================================
public void changeSequence(boolean[] checkboxState) {
for (int i = 0; i < 256; i++) {
JCheckBox check = (JCheckBox) checkboxList.get(i);
if (checkboxState[i]) {
check.setSelected(true);
}
else
{
check.setSelected(false);
}
}
}
public void makeTracks(ArrayList<Integer> list) {
Iterator it = list.iterator();
for (int i = 0; i < 16; i++) {
Integer num = (Integer) it.next();
if (num != null) {
int numKey = num.intValue();
track.add(makeEvent(144, 9, numKey, 100, i));
track.add(makeEvent(128, 9, numKey, 100, i+1));
}
}
}
public MidiEvent makeEvent(int comd, int chan, int one, int two, int tick) {
MidiEvent event = null;
try {
ShortMessage a = new ShortMessage();
a.setMessage(comd, chan, one, two);
event = new MidiEvent(a, tick);
}catch(Exception e) { }
return event;
}
}
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