1 files changed, 116 insertions, 0 deletions
diff --git a/src/java/com/cycling74/msp/AudioFileBuffer.java b/src/java/com/cycling74/msp/AudioFileBuffer.java
new file mode 100644
index 0000000..b2e76f3
--- /dev/null
+++ b/src/java/com/cycling74/msp/AudioFileBuffer.java
@@ -0,0 +1,116 @@
+package com.cycling74.msp;
+
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+
+import javax.sound.sampled.AudioFormat;
+import javax.sound.sampled.AudioInputStream;
+import javax.sound.sampled.AudioSystem;
+import javax.sound.sampled.UnsupportedAudioFileException;
+
+import com.cycling74.max.MessageReceiver;
+
+/**
+ * Work in progress, target: 0.8.4
+ */
+class AudioFileBuffer {
+    
+    /** file buffer value */
+    public float buf[][];
+    
+    /** Value of the message that will be sended to MessageReceiver when the file will be loaded */
+    public static final int FINISHED_READING = 1;
+   
+    private MessageReceiver callback = null;
+    private String file;
+    private AudioFormat audioFormat;
+    private AudioFormat targetAudioFormat;
+    
+    // getters values
+    private float sampleRate;
+    private int sampleBitFormat;
+    private boolean sampleBigEndian;
+    private int sampleChannels;
+    private long sampleFrames;
+    
+    public AudioFileBuffer(String filename) throws FileNotFoundException, IOException, UnsupportedAudioFileException {
+        open(filename);
+    }
+    
+    public AudioFileBuffer(String filename, MessageReceiver callback) throws FileNotFoundException, IOException, UnsupportedAudioFileException {
+        this.callback = callback;
+        open(filename);
+    }
+    
+    public void open(String filename) throws FileNotFoundException, IOException, UnsupportedAudioFileException {
+        // file format 
+        sampleRate = 0;
+        sampleBitFormat = 0;
+        sampleChannels = 0;
+        sampleFrames = 0;
+        
+        AudioInputStream sourceAudioInputStream = AudioSystem.getAudioInputStream( new FileInputStream(file) );
+        AudioFormat sourceAudioFormat = sourceAudioInputStream.getFormat();
+        targetAudioFormat = new AudioFormat( 
+                AudioFormat.Encoding.PCM_UNSIGNED,      // Encoding 
+                getSystemSampleRate(),                  // Sample rate
+                16,                                     // bit
+                sourceAudioFormat.getChannels(),        // channel
+                sourceAudioFormat.getFrameSize(),       // frame size
+                sourceAudioFormat.getFrameRate(),       // frame rate 
+                false );                                // big Endian
+        AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(audioFormat, sourceAudioInputStream );
+        
+        FileLoader thread = new FileLoader(audioInputStream);
+        new Thread(thread).start();
+    }
+    
+    class FileLoader implements Runnable {
+        AudioInputStream ais;
+        
+        FileLoader(AudioInputStream input) {
+            ais = input;
+        }
+        
+        public void run() {
+            try {
+                buf = new float[audioFormat.getChannels()][];
+                
+                for (int i=0;ais.available() != 0;i++) {
+                    //doc.content[i] = audioInputStream.read() / 65535;
+                }       
+                
+                if ( callback != null ) 
+                    callback.messageReceived(this, FINISHED_READING, null);
+            } catch ( IOException e ) {
+            }
+        }
+    }
+    
+    public float getSampleRate() {
+        return sampleRate;
+    }
+    
+    public int getSampleSizeInBits() {
+        return sampleBitFormat;
+    }
+    
+    public boolean isBigEndian() {
+        return sampleBigEndian;
+    }
+    
+    public long getFrameLength() {
+        return sampleFrames;
+    }
+    
+    public int getChannels() {
+        return sampleChannels;
+    }
+    
+    public float getLengthMs() {
+        return buf[0].length / (sampleRate / 1000);
+    }
+    
+    private native int getSystemSampleRate();
+}
+\ No newline at end of file