Hello,
some of my Friends, and I decided to make a Media player using Java just for the fun of it. here are my Questions,
#1: is it possible using Java ? or should I use a different language?
#2: the process of Reading||Displaying||Viewing Video files is called ?
#3: any good resources to learn from ?
Thank you.
This is the simple code for playing single file enhance this code for playing more file replay if it is helpful to you though i know the code for playing more than 1 file but you can do it your self practice makes man perfect. good luck.
import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;
import javax.sound.sampled.*;
import javax.sound.midi.*;
public class SoundPlayer extends JComponent {
boolean midi;
Sequence sequence;
Sequencer sequencer;
Clip clip;
boolean playing = false;
int audioLength;
int audioPosition = 0;
JButton play;
JSlider progress;
JLabel time;
Timer timer;
public static void main(String[ ] args)
throws IOException,
UnsupportedAudioFileException,
LineUnavailableException,
MidiUnavailableException,
InvalidMidiDataException
{
SoundPlayer player;
File file = new File("trippygaia1.mid");
boolean ismidi;
try {
MidiSystem.getMidiFileFormat(file);
ismidi = true;
}
catch(InvalidMidiDataException e) {
ismidi = false;
}
player = new SoundPlayer(file, ismidi);
JFrame f = new JFrame("SoundPlayer");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.getContentPane( ).add(player, "Center");
f.pack( );
f.setVisible(true);
}
public SoundPlayer(File f, boolean isMidi)
throws IOException,
UnsupportedAudioFileException,
LineUnavailableException,
MidiUnavailableException,
InvalidMidiDataException
{
if (isMidi) {
midi = true;
sequencer = MidiSystem.getSequencer( );
sequencer.open( );
Synthesizer synth = MidiSystem.getSynthesizer( );
synth.open( );
Transmitter transmitter = sequencer.getTransmitter( );
Receiver receiver = synth.getReceiver( );
transmitter.setReceiver(receiver);
sequence = MidiSystem.getSequence(f);
sequencer.setSequence(sequence);
audioLength = (int)sequence.getTickLength( );
}
else {
midi = false;
AudioInputStream ain = AudioSystem.getAudioInputStream(f);
try {
DataLine.Info info =
new DataLine.Info(Clip.class,ain.getFormat( ));
clip = (Clip) AudioSystem.getLine(info);
clip.open(ain);
}
finally {
ain.close( );
}
audioLength = (int)(clip.getMicrosecondLength( )/1000);
}
play = new JButton("Play");
progress = new JSlider(0, audioLength, 0);
time = new JLabel("0");
play.addActionListener(new ActionListener( ) {
public void actionPerformed(ActionEvent e) {
if (playing) stop( ); else play( );
}
});
progress.addChangeListener(new ChangeListener( ) {
public void stateChanged(ChangeEvent e) {
int value = progress.getValue( );
if (midi) time.setText(value + "");
else time.setText(value/1000 + "." +
(value%1000)/100);
if (value != audioPosition) skip(value);
}
});
timer = new javax.swing.Timer(100, new ActionListener( ) {
public void actionPerformed(ActionEvent e) { tick( ); }
});
Box row = Box.createHorizontalBox( );
row.add(play);
row.add(progress);
row.add(time);
setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
this.add(row);
if (midi) addMidiControls( );
else addSampledControls( );
}
public void play( ) {
if (midi) sequencer.start( );
else clip.start( );
timer.start( );
play.setText("Stop");
playing = true;
}
public void stop( ) {
timer.stop( );
if (midi) sequencer.stop( );
else clip.stop( );
play.setText("Play");
playing = false;
}
public void reset( ) {
stop( );
if (midi) sequencer.setTickPosition(0);
else clip.setMicrosecondPosition(0);
audioPosition = 0;
progress.setValue(0);
}
public void skip(int position) {
if (position < 0 || position > audioLength) return;
audioPosition = position;
if (midi) sequencer.setTickPosition(position);
else clip.setMicrosecondPosition(position * 1000);
progress.setValue(position);
}
public int getLength( ) { return audioLength; }
void tick( ) {
if (midi && sequencer.isRunning( )) {
audioPosition = (int)sequencer.getTickPosition( );
progress.setValue(audioPosition);
}
else if (!midi && clip.isActive( )) {
audioPosition = (int)(clip.getMicrosecondPosition( )/1000);
progress.setValue(audioPosition);
}
else reset( );
}
void addSampledControls( ) {
try {
FloatControl gainControl =
(FloatControl)clip.getControl(FloatControl.Type.MASTER_GAIN);
if (gainControl != null) this.add(createSlider(gainControl));
}
catch(IllegalArgumentException e) {
}
try {
FloatControl panControl =
(FloatControl)clip.getControl(FloatControl.Type.PAN);
if (panControl != null) this.add(createSlider(panControl));
}
catch(IllegalArgumentException e) { }
}
JSlider createSlider(final FloatControl c) {
if (c == null) return null;
final JSlider s = new JSlider(0, 1000);
final float min = c.getMinimum( );
final float max = c.getMaximum( );
final float width = max-min;
float fval = c.getValue( );
s.setValue((int) ((fval-min)/width * 1000));
java.util.Hashtable labels = new java.util.Hashtable(3);
labels.put(new Integer(0), new JLabel(c.getMinLabel( )));
labels.put(new Integer(500), new JLabel(c.getMidLabel( )));
labels.put(new Integer(1000), new JLabel(c.getMaxLabel( )));
s.setLabelTable(labels);
s.setPaintLabels(true);
s.setBorder(new TitledBorder(c.getType( ).toString( ) + " " +
c.getUnits( )));
s.addChangeListener(new ChangeListener( ) {
public void stateChanged(ChangeEvent e) {
int i = s.getValue( );
float f = min + (i*width/1000.0f);
c.setValue(f);
}
});
return s;
}
void addMidiControls( ) {
final JSlider tempo = new JSlider(50, 200);
tempo.setValue((int)(sequencer.getTempoFactor( )*100));
tempo.setBorder(new TitledBorder("Tempo Adjustment (%)"));
java.util.Hashtable labels = new java.util.Hashtable( );
labels.put(new Integer(50), new JLabel("50%"));
labels.put(new Integer(100), new JLabel("100%"));
labels.put(new Integer(200), new JLabel("200%"));
tempo.setLabelTable(labels);
tempo.setPaintLabels(true);
tempo.addChangeListener(new ChangeListener( ) {
public void stateChanged(ChangeEvent e) {
sequencer.setTempoFactor(tempo.getValue( )/100.0f);
}
});
this.add(tempo);
Track[ ] tracks = sequence.getTracks( );
for(int i = 0; i < tracks.length; i++) {
final int tracknum = i;
final JCheckBox solo = new JCheckBox("solo");
final JCheckBox mute = new JCheckBox("mute");
solo.addActionListener(new ActionListener( ) {
public void actionPerformed(ActionEvent e) {
sequencer.setTrackSolo(tracknum,solo.isSelected( ));
}
});
mute.addActionListener(new ActionListener( ) {
public void actionPerformed(ActionEvent e) {
sequencer.setTrackMute(tracknum,mute.isSelected( ));
}
});
Box box = Box.createHorizontalBox( );
box.add(new JLabel("Track " + tracknum));
box.add(Box.createHorizontalStrut(10));
box.add(solo);
box.add(Box.createHorizontalStrut(10));
box.add(mute);
box.add(Box.createHorizontalGlue( ));
this.add(box);
}
}
}I didn't ask for the code , thats what "I and my friends" Should do =\ thanks for the spoiler , but I guess the Q#1 A is "yes"
asd for Q#2&Q#3 I need those keywords to search more about the process of how a video|movie works :)
Thanks for that!
Hello Skwatamkar!
I'm looking for a java MIDI player. What I need is a source code and a complete program, which is created in Netbeans or another program. I should create a JFrame form and grafically program the MIDI player.
Can you help me in this problem, because I didn't find any sourse code over the internet which is created using JFrame form.
Thank you, Gabesz
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