working on java 1.1 audio

core/PSound.java

@@ -25,6 +25,7 @@
 package processing.core;
 
 import java.io.*;
+import java.lang.reflect.*;
 import sun.audio.*;
 
 // add check for reflection in host applet for sound completion
@@ -32,18 +33,30 @@ import sun.audio.*;
 
 
 /**
- * This is the crappy 8 khz ulaw version that's compatible
+ * This is the crappy 8 khz mono ulaw version that's compatible
  * with Java 1.1 and 1.2. For Java 1.3 and higher, PSound2 is used.
  */
 public class PSound {
-  PApplet applet;
+  // supposedly this is actually 8012.8210513 according to spec
+  public static final int SAMPLING_RATE = 8000;
+
+  PApplet parent;
+  Method soundEventMethod;
+
+  InputStream stream;
+  boolean loop;
+  float volume = 1;
+
+  //int length;
+  int position;
+  int data[];
 
 
-  public PSound() { }  // for subclass
+  public PSound() { }  // for 1.3 subclass
 
 
-  public PSound(PApplet applet, InputStream input) {
-    this.applet = applet;
+  public PSound(PApplet parent, InputStream input) {
+    this.parent = parent;
 
     /*
     try {
@@ -52,10 +65,40 @@ public class PSound {
       error("<init>", e);
     }
     */
+
+      parent.registerDispose(this);
+
+      try {
+        soundEventMethod =
+          parent.getClass().getMethod("soundEvent",
+                                      new Class[] { PSound.class });
+
+        // if we're here, then it means that there's a method for it
+        /*
+        clip.addLineListener(new LineListener() {
+            public void update(LineEvent event) {
+              if (event.getType() == LineEvent.Type.STOP) {
+                try {
+                  soundEventMethod.invoke(parent,
+                                          new Object[] { PSound.this });
+                } catch (Exception e) {
+                  System.err.println("error, disabling soundEvent()");
+                  e.printStackTrace();
+                  soundEventMethod = null;
+                }
+              }
+            }
+          });
+        */
+
+      } catch (Exception e) {
+        // no such method, or an error.. which is fine, just ignore
+      }
   }
 
 
   public void play() {
+    AudioPlayer.player.start(stream);
   }
 
 
@@ -63,6 +106,7 @@ public class PSound {
    * either sets repeat flag, or begins playing (and sets)
    */
   public void loop() {
+    loop = true;
   }
 
 
@@ -72,10 +116,12 @@ public class PSound {
    * continue to the end of the clip."
    */
   public void noLoop() {
+    loop = false;
   }
 
 
   public void pause() {
+    AudioPlayer.player.stop(stream);
   }
 
 
@@ -83,6 +129,8 @@ public class PSound {
    * Stops the audio and rewinds to the beginning.
    */
   public void stop() {
+    AudioPlayer.player.stop(stream);
+
   }
 
 
@@ -90,7 +138,8 @@ public class PSound {
    * current position inside the clip (in seconds, just like video)
    */
   public float time() {
-    return 0;
+    //return 0;
+    return (float)position / (float)SAMPLING_RATE;
   }
 
 
@@ -103,6 +152,7 @@ public class PSound {
 
 
   public void volume(float v) {  // ranges 0..1
+    this.volume = v;
   }
 
 
@@ -111,7 +161,154 @@ public class PSound {
    * I think of something slightly more intelligent to do.
    */
   protected void error(String where, Exception e) {
-    applet.die("Error inside PSound." + where + "()", e);
+    parent.die("Error inside PSound." + where + "()", e);
     //e.printStackTrace();
   }
+
+
+  // ------------------------------------------------------------
+
+
+  class Stream extends InputStream {
+    int index;
+
+    public int available() throws IOException {
+      return data.length - position;
+    }
+
+    public void close() throws IOException { }
+
+    public synchronized void mark() { }
+
+    public boolean markSupported() {
+      return false;
+    }
+
+    public int read() throws IOException {
+      return 0;
+    }
+
+    public int read(byte b[]) throws IOException {
+      return 0;
+    }
+
+    public int read(byte b[], int off, int len) throws IOException {
+      return 0;
+    }
+
+    public synchronized void reset() {
+      position = 0;
+    }
+
+    public long skip(long n) {
+      position = (position + (int)n) % data.length;
+      return n;
+    }
+  }
+
+
+
+  // ------------------------------------------------------------
+
+  // Conversion
+  // ulaw from http://www-svr.eng.cam.ac.uk/comp.speech/Section2/Q2.7.html
+
+  static final short BIAS = 0x84;
+  static final int CLIP = 32635;
+
+  static final int[] LINEAR_LUT = {
+    0, 132, 396, 924, 1980, 4092, 8316, 16764
+  };
+
+  static final int[] LAW_LUT = {
+    0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+    5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+    6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+    6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+    6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+    6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+    7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+    7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+    7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+    7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+    7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+    7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+    7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+    7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7
+  };
+
+
+  /**
+   * 16 bit linear to 8 bit ulaw
+   */
+  static byte linear2ulaw(int linear) {
+    //int sign, exponent, mantissa;
+    //byte ulaw;
+
+    if (linear > 32767) {
+      linear = 32767;
+    } else if(linear < -32768) {
+      linear = -32768;
+    }
+
+    int sign = linear >> 8 & 0x80;
+    if (sign != 0) linear = -linear;
+    if (linear > CLIP) linear = CLIP;
+
+    linear += BIAS;
+    int exponent = LAW_LUT[linear >> 7 & 0xFF];
+    int mantissa = linear >> exponent + 3 & 0xf;
+    byte ulaw = (byte) ( ~(sign | exponent << 4 | mantissa));
+    if (ulaw == 0) ulaw = 2;  // CCITT trap
+
+    return ulaw;
+  }
+
+  /**
+   * 8 bit ulaw to 16 bit linear
+   */
+  static int ulaw2linear(int ulaw) {
+    ulaw = ~ulaw;
+
+    int sign = ulaw & 0x80;
+    int exponent = (ulaw >> 4) & 7;
+    int mantissa = ulaw & 0x0F;
+    int linear = LINEAR_LUT[exponent] + (mantissa << exponent + 3);
+
+    return (short) ((sign != 0) ? -linear : linear);
+  }
+
+
+  /**
+   * cheap resampling with pitch distortion and aliasing
+   */
+  static int[] resample(int original[], int oldfreq, int newfreq) {
+    int resampled[] = null;
+    float factor = 0;
+    int newlength;
+
+    if (oldfreq > newfreq) {  // downsample
+      factor = (float)oldfreq / (float)newfreq;
+      newlength = (int)(original.length / factor);
+      resampled = new int[newlength];
+
+      for (int i = 0; i < newlength; i++) {
+        resampled[i] = original[(int)(i * factor)];
+      }
+      return resampled;
+
+    } else if (oldfreq < newfreq) {  // upsample (is it necesary??)
+      factor = (float)newfreq / (float)oldfreq;
+      newlength = (int) (original.length * factor);
+      resampled = new int[newlength];
+
+      for (int i = 0; i < newlength; i++) {
+        resampled[i] = original[(int) (i * factor)];
+      }
+      return resampled;
+    }
+    return original;
+  }
 }

core/PSound2.java

@@ -33,7 +33,7 @@ import javax.sound.sampled.*;
 // for this class: http://javaalmanac.com/egs/javax.sound.sampled/pkg.html
 
 public class PSound2 extends PSound {
-  PApplet parent;
+  //PApplet parent;
   Method soundEventMethod;
 
   Clip clip;
@@ -47,12 +47,11 @@ public class PSound2 extends PSound {
       AudioInputStream stream =
         AudioSystem.getAudioInputStream(input);
 
-      // *** this code appears as though it may just be faulty ***
-
       // At present, ALAW and ULAW encodings must be converted
       // to PCM_SIGNED before it can be played
       AudioFormat format = stream.getFormat();
       if (format.getEncoding() != AudioFormat.Encoding.PCM_SIGNED) {
+        // *** this code appears as though it may just be faulty ***
         format = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED,
                                  format.getSampleRate(),
                                  format.getSampleSizeInBits()*2,
@@ -61,7 +60,7 @@ public class PSound2 extends PSound {
                                  format.getFrameRate(),
                                  true);  // big endian
         stream = AudioSystem.getAudioInputStream(format, stream);
-        //} else {
+      //} else {
         //System.out.println("no conversion necessary");
       }
 
@@ -202,6 +201,7 @@ public class PSound2 extends PSound {
     gainControl.setValue(dB);
   }
 
+
   /** mute */
   /*
   public void noVolume() {