Audio Capture and Playback Applet
Checkout below source code for awesome Audio capture and Playback Applet:
Applet Class
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import java.awt.Frame; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import java.io.BufferedReader; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import javax.sound.sampled.AudioFileFormat; import javax.sound.sampled.AudioFormat; import javax.sound.sampled.AudioInputStream; import javax.sound.sampled.AudioSystem; import javax.sound.sampled.BooleanControl; import javax.sound.sampled.DataLine; import javax.sound.sampled.FloatControl; import javax.sound.sampled.LineUnavailableException; import javax.sound.sampled.Port; import javax.sound.sampled.SourceDataLine; import javax.sound.sampled.TargetDataLine; import javax.sound.sampled.AudioFormat.Encoding; import javax.swing.JApplet; import javax.swing.JButton; import javax.swing.JComboBox; import javax.swing.JLabel; import javax.swing.JSlider; import javax.swing.JTextField; import javax.swing.JToggleButton; import javax.swing.Timer; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; //Main class public class AudioApplet extends JApplet implements ActionListener, ChangeListener, ItemListener { //Global declarations protected boolean running; ByteArrayOutputStream out = null; AudioFileFormat.Type fileType; Object lock = new Object(); TargetDataLine line = null; SourceDataLine sline = null; volatile boolean paused = false; boolean first; JButton record; JButton play; JButton pause; JButton stop; JButton send; JButton listen; JButton save; JTextField fnametxt; JComboBox servercombo; JTextField statustxt; JSlider progress; JLabel time; Timer timer; int audioLength ; int audioPosition = 0; JLabel vol1 = null; JLabel vol2 = null; JSlider volslider = null; JToggleButton mute = null; FloatControl volCtrl = null; Port lineIn = null; String list[]; volatile String msg; public void init() { setLayout(null); JLabel recorder = new JLabel("Recorder"); JLabel fileName = new JLabel("Please Enter File Name"); JLabel server = new JLabel("Listen From Server"); JLabel status = new JLabel("Status..."); fnametxt = new JTextField("FileName"); servercombo = new JComboBox(); statustxt = new JTextField("Check your status here..."); record = new JButton("Record"); play = new JButton("Play"); pause = new JButton("Pause"); stop = new JButton("Stop"); send = new JButton("Upload"); listen = new JButton("Listen"); save = new JButton("Save"); progress = new JSlider(0, audioLength, 0); time = new JLabel("0:00"); mute = new JToggleButton("Mute"); vol1 = new JLabel("Volume -"); vol2 = new JLabel("+"); volslider = new JSlider(0,100); volslider.setToolTipText("Volume"); volslider.setPaintTicks(true); volslider.setMinorTickSpacing(10); recorder.setBounds(10,10,70,25); record.setBounds(70,10,80,25); play.setBounds(155,10,80,25); pause.setBounds(240,10,80,25); stop.setBounds(325,10,80,25); fileName.setBounds(10,40,130,25); fnametxt.setBounds(180,40,140,25); send.setBounds(325,40,80,25); server.setBounds(10,70,130,25); servercombo.setBounds(180, 70, 140, 25); listen.setBounds(325,70,80,25); status.setBounds(10,100,70,25); statustxt.setBounds(100,100,222,25); save.setBounds(325,100,80,25); progress.setBounds(50, 140, 300, 20); time.setBounds(360, 140, 30, 20); vol1.setBounds(75, 170, 100, 20); volslider.setBounds(130, 180, 150, 20); vol2.setBounds(280, 172, 30, 20); mute.setBounds(330, 170, 65, 30); add(recorder); add(record); add(play); add(pause); add(stop); add(save); add(fileName); add(fnametxt); add(send); add(server); add(servercombo); add(listen); add(status); add(statustxt); add(progress); add(time); add(vol1); add(volslider); add(vol2); add(mute); record.setEnabled(true); pause.setEnabled(true); play.setEnabled(true); stop.setEnabled(true); save.setEnabled(true); send.setEnabled(true); listen.setEnabled(true); record.addActionListener(this); play.addActionListener(this); pause.addActionListener(this); stop.addActionListener(this); save.addActionListener(this); send.addActionListener(this); listen.addActionListener(this); mute.addActionListener(this); progress.addChangeListener(this); volslider.addChangeListener(this); servercombo.addItemListener(this); }//End of init method //***************************************************/ //******* StateChanged method for ChangeListener*****/ //***************************************************/ public void stateChanged(ChangeEvent e) { if (e.getSource()==volslider) { volumeControl(); }else { int value = progress.getValue(); time.setText(value / 1000 + "." + (value % 1000) / 100); } } public void itemStateChanged(ItemEvent ie) { msg = " Listening from server [buffering]..."; statustxt.setText(msg); listenAudio(); } //***************************************************/ //***** ActionPerformed method for ActionListener****/ //***************************************************/ public void actionPerformed(ActionEvent e) { if(e.getSource()==record){ msg = " Capturing audio from mic....."; statustxt.setText(msg); record.setEnabled(false); pause.setEnabled(true); stop.setEnabled(true); play.setEnabled(false); save.setEnabled(true); if(paused) { resumeRecord(); } else { recordAudio(); } } else if (e.getSource()==play) { msg = " Playing recorded audio....."; statustxt.setText(msg); stop.setEnabled(true); if(first) { playAudio(); } else { resumePlay(); } } else if (e.getSource()==pause) { msg = "Paused...."; statustxt.setText(msg); record.setEnabled(true); pause.setEnabled(true); pauseAudio(); first=false; } else if (e.getSource()==stop) { msg = " Action stopped by user....."; statustxt.setText(msg); progress.setValue(0); record.setEnabled(true); stop.setEnabled(false); play.setEnabled(true); running = false; stopAudio(); } else if (e.getSource()==save) { msg = " Saving file to user's System...."; statustxt.setText(msg); saveAudio(); } else if (e.getSource()==send) { msg = " Sending recorded file to server..."; statustxt.setText(msg); uploadAudio(); } else if(e.getSource()==listen){ msg = " Listening from server [buffering]..."; statustxt.setText(msg); //code for listen audio } else { muteControl(); } } //******************************************/ //************** Method Declarations ****/ //******************************************/ private void recordAudio() { first=true; try { final AudioFileFormat.Type fileType = AudioFileFormat.Type.AU; final AudioFormat format = getFormat(); DataLine.Info info = new DataLine.Info(TargetDataLine.class, format); line = (TargetDataLine)AudioSystem.getLine(info); line.open(format); line.start(); Runnable runner = new Runnable() { int bufferSize = (int) format.getSampleRate()* format.getFrameSize(); byte buffer[] = new byte[bufferSize]; public void run() { out = new ByteArrayOutputStream(); running = true; try { while (running) { int count = line.read(buffer, 0, buffer.length); if (count > 0) { out.write(buffer, 0, count); InputStream input = new ByteArrayInputStream(buffer); final AudioInputStream ais = new AudioInputStream(input, format, buffer.length /format.getFrameSize()); } } out.close(); }catch (IOException e) { System.exit(-1); } } }; Thread recordThread = new Thread(runner); recordThread.start(); }catch(LineUnavailableException e) { System.err.println("Line Unavailable:"+ e); e.printStackTrace(); System.exit(-2); } catch (Exception e) { System.out.println("Direct Upload Error"); e.printStackTrace(); } }//End of RecordAudio method private void playAudio() { try{ byte audio[] = out.toByteArray(); InputStream input = new ByteArrayInputStream(audio); final AudioFormat format = getFormat(); final AudioInputStream ais = new AudioInputStream(input, format, audio.length /format.getFrameSize()); DataLine.Info info = new DataLine.Info(SourceDataLine.class, format); sline = (SourceDataLine)AudioSystem.getLine(info); sline.open(format); sline.start(); Float audioLen = (audio.length / format.getFrameSize()) * format.getFrameRate(); Runnable runner = new Runnable() { int bufferSize = (int) format.getSampleRate() * format.getFrameSize(); byte buffer[] = new byte[bufferSize]; public void run() { try { int count; synchronized(lock){ while((count = ais.read( buffer, 0, buffer.length)) != -1) { while(paused) { if(sline.isRunning()) { sline.stop(); } try{ lock.wait(); } catch(InterruptedException e) { } } if(!sline.isRunning()) { sline.start(); } if(count > 0) { sline.write(buffer, 0, count); } } } first=true; sline.drain(); sline.close(); }catch(IOException e) { System.err.println("I/O problems:" + e); System.exit(-3); } } }; Thread playThread = new Thread(runner); playThread.start(); }catch(LineUnavailableException e) { System.exit(-4); } }//End of PlayAudio method private void resumeRecord(){ synchronized(lock) { paused = false; lock.notifyAll(); first = true; } }//End of ResumeRecord method private void stopAudio() { if (sline != null) { sline.stop(); sline.close(); }else { line.stop(); line.close(); } }//End of StopAudio method private void resumePlay(){ synchronized(lock) { paused = false; lock.notifyAll(); System.out.println("inside resumeplay method"); } }//End of ResumePlay method private void pauseAudio(){ paused = true; } private void saveAudio() { Thread thread = new saveThread(); thread.start(); } private void uploadAudio() { Thread th= new uploadThread(); th.start(); } private void listenAudio() { Thread thread = new listenThread(); thread.start(); } private AudioFormat getFormat() { Encoding encoding = AudioFormat.Encoding.PCM_SIGNED; float sampleRate = 44100.0F; int sampleSizeInBits = 16; int channels = 2; int frameSize = 4; float frameRate = 44100.0F; boolean bigEndian = false; return new AudioFormat(encoding, sampleRate, sampleSizeInBits, channels, frameSize, frameRate, bigEndian); }//End of getAudioFormat method class saveThread extends Thread { public void run(){ AudioFileFormat.Type fileType = AudioFileFormat.Type.WAVE; FileDialog fd = new FileDialog(new Frame(), "Save as WAVE", FileDialog.SAVE); fd.setFile("*.wav"); fd.setVisible(true); String name = fd.getDirectory() + fd.getFile(); File file = new File(name); try{ byte audio[] = out.toByteArray(); InputStream input = new ByteArrayInputStream(audio); final AudioFormat format = getFormat(); final AudioInputStream ais = new AudioInputStream(input, format, audio.length /format.getFrameSize()); AudioSystem.write(ais,fileType,file); }catch (Exception e){ e.printStackTrace(); } } }//End of inner class saveThread class uploadThread extends Thread{ public void run(){ AudioFileFormat.Type fileType = AudioFileFormat.Type.AU; try{ line.flush(); line.close(); } catch(Exception e){ e.printStackTrace(); System.err.println("Error during upload"); } } }//End of inner class uploadThread class listenThread extends Thread{ public void run() { try { URL upload=new URL("http://localhost:8080/TapasApplet/upload"); HttpURLConnection conn = (HttpURLConnection) upload.openConnection(); conn.setRequestMethod("POST"); conn.setDoOutput(true); conn.setDoInput(true); conn.setUseCaches(false); conn.setDefaultUseCaches(false); conn.setChunkedStreamingMode(1000); conn.setRequestProperty("Content-Type", "application/octet-stream"); InputStream is = conn.getInputStream(); BufferedReader br = new BufferedReader(new InputStreamReader(is)); String serfile = br.readLine(); while(line != null){ //un complete code here serfile=br.readLine(); } } catch (IOException e) { System.err.println("Error in UserThread run() method"); e.printStackTrace(); } } } public void volumeControl() { try { if(AudioSystem.isLineSupported(Port.Info.LINE_OUT)) { lineIn = (Port)AudioSystem.getLine(Port.Info.LINE_OUT); lineIn.open(); } else if(AudioSystem.isLineSupported(Port.Info.HEADPHONE)) { lineIn = (Port)AudioSystem.getLine(Port.Info.HEADPHONE); lineIn.open(); } else if(AudioSystem.isLineSupported(Port.Info.SPEAKER)) { lineIn = (Port)AudioSystem.getLine(Port.Info.SPEAKER); lineIn.open(); } else { System.out.println("Unable to get Output Port"); return; } final FloatControl controlIn = (FloatControl)lineIn.getControl(FloatControl.Type.VOLUME); final float volume = 100 * (controlIn.getValue() / controlIn.getMaximum()); System.out.println(volume); int sliderValue=volslider.getValue(); controlIn.setValue((float)sliderValue / 100); } catch (Exception e) { System.out.println(" VOLUME control: exception = " + e); } }//End of volumeControl method public void muteControl() { BooleanControl mControl; try { mControl = (BooleanControl) sline.getControl(BooleanControl.Type.MUTE); if (mControl.getValue() == true) { mControl.setValue(false); } else { mControl.setValue(true); } } catch (Exception e) { System.out.println(" MUTE control: exception = " + e); } } }//End of main class AudioBroadcast |