src/share/classes/com/sun/media/sound/AuFileReader.java

@@ -47,17 +47,10 @@
  * @author Jan Borgersen
  * @author Florian Bomers
  */
 public final class AuFileReader extends SunFileReader {
 
-    /**
-     * Constructs a new AuFileReader object.
-     */
-    public AuFileReader() {
-    }
-
-
     // METHODS TO IMPLEMENT AudioFileReader
 
     /**
      * Obtains the audio file format of the input stream provided.  The stream must
      * point to valid audio file data.  In general, audio file providers may

@@ -88,11 +81,11 @@
         int encoding_local = -1;
         int sampleRate     = -1;
         int frameRate      = -1;
         int frameSize      = -1;
         int channels       = -1;
-        int sampleSizeInBits = 0;
+        final int sampleSizeInBits;
         int length = 0;
         int nread = 0;
         AudioFormat.Encoding encoding = null;
 
         DataInputStream dis = new DataInputStream( stream );

@@ -116,10 +109,14 @@
         headerSize     = (bigendian==true ? dis.readInt() : rllong(dis) );  nread += 4;
         dataSize       = (bigendian==true ? dis.readInt() : rllong(dis) );  nread += 4;
         encoding_local = (bigendian==true ? dis.readInt() : rllong(dis) );  nread += 4;
         sampleRate     = (bigendian==true ? dis.readInt() : rllong(dis) );  nread += 4;
         channels       = (bigendian==true ? dis.readInt() : rllong(dis) );  nread += 4;
+        if (channels <= 0) {
+            dis.reset();
+            throw new UnsupportedAudioFileException("Invalid number of channels");
+        }
 
         frameRate = sampleRate;
 
         switch (encoding_local) {
         case AuFileFormat.AU_ULAW_8:

@@ -370,9 +367,6 @@
             }
         }
 
         return result;
     }
-
-
-
 }