BMIRechner/src/Tools/AePlayWave.java

   1 package Tools;
   2
   3 import java.io.File;
   4 import java.io.IOException;
   5 import javax.sound.sampled.AudioFormat;
   6 import javax.sound.sampled.AudioInputStream;
   7 import javax.sound.sampled.AudioSystem;
   8 import javax.sound.sampled.DataLine;
   9 import javax.sound.sampled.FloatControl;
  10 import javax.sound.sampled.LineUnavailableException;
  11 import javax.sound.sampled.SourceDataLine;
  12 import javax.sound.sampled.UnsupportedAudioFileException;
  13
  14 public class AePlayWave extends Thread {
  15
  16     private String filename;
  17
  18     private Position curPosition;
  19
  20     private final int EXTERNAL_BUFFER_SIZE = 524288; // 128Kb
  21
  22     enum Position {
  23         LEFT, RIGHT, NORMAL
  24     };
  25
  26     public AePlayWave(String wavfile) {
  27         filename = wavfile;
  28         curPosition = Position.NORMAL;
  29     }
  30
  31     public AePlayWave(String wavfile, Position p) {
  32         filename = wavfile;
  33         curPosition = p;
  34     }
  35
  36     public void run() {
  37
  38         File soundFile = new File(filename);
  39         if (!soundFile.exists()) {
  40             System.err.println("Wave file not found: " + filename);
  41             return;
  42         }
  43
  44         AudioInputStream audioInputStream = null;
  45         try {
  46             audioInputStream = AudioSystem.getAudioInputStream(soundFile);
  47         } catch (UnsupportedAudioFileException e1) {
  48             e1.printStackTrace();
  49             return;
  50         } catch (IOException e1) {
  51             e1.printStackTrace();
  52             return;
  53         }
  54
  55         AudioFormat format = audioInputStream.getFormat();
  56         SourceDataLine auline = null;
  57         DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
  58
  59         try {
  60             auline = (SourceDataLine) AudioSystem.getLine(info);
  61             auline.open(format);
  62         } catch (LineUnavailableException e) {
  63             e.printStackTrace();
  64             return;
  65         } catch (Exception e) {
  66             e.printStackTrace();
  67             return;
  68         }
  69
  70         if (auline.isControlSupported(FloatControl.Type.PAN)) {
  71             FloatControl pan = (FloatControl) auline
  72                     .getControl(FloatControl.Type.PAN);
  73             if (curPosition == Position.RIGHT)
  74                 pan.setValue(1.0f);
  75             else if (curPosition == Position.LEFT)
  76                 pan.setValue(-1.0f);
  77         }
  78
  79         auline.start();
  80         int nBytesRead = 0;
  81         byte[] abData = new byte[EXTERNAL_BUFFER_SIZE];
  82
  83         try {
  84             while (nBytesRead != -1) {
  85                 nBytesRead = audioInputStream.read(abData, 0, abData.length);
  86                 if (nBytesRead >= 0)
  87                     auline.write(abData, 0, nBytesRead);
  88             }
  89         } catch (IOException e) {
  90             e.printStackTrace();
  91             return;
  92         } finally {
  93             auline.drain();
  94             auline.close();
  95         }
  96
  97     }
  98 }
  99