FFMPEGMediaPlayer: Add AudioSink interface.

Use ALAudioSink when available and fallback to
JavaSoundAudioSink when JOAL are not found on classpath.

Java Sound playback moved from FFMPEGMediaPlayer into JavaSoundAudioSink.

Signed-off-by: Xerxes Rånby <[email protected]>

1 files changed, 110 insertions, 0 deletions

diff --git a/src/jogl/classes/jogamp/opengl/openal/av/ALAudioSink.java b/src/jogl/classes/jogamp/opengl/openal/av/ALAudioSink.java
new file mode 100644
index 000000000..e7a957156
--- /dev/null
+++ b/src/jogl/classes/jogamp/opengl/openal/av/ALAudioSink.java
@@ -0,0 +1,110 @@
+package jogamp.opengl.openal.av;
+
+import java.util.Arrays;
+
+import javax.sound.sampled.AudioFormat;
+import javax.sound.sampled.AudioSystem;
+import javax.sound.sampled.DataLine;
+import javax.sound.sampled.SourceDataLine;
+
+import jogamp.opengl.util.av.AudioSink;
+
+import com.jogamp.openal.*;
+import com.jogamp.openal.util.*;
+
+public class ALAudioSink implements AudioSink {
+
+    static ALC alc;
+    static AL al;
+    static ALCdevice device;
+    static ALCcontext context;
+
+    // AudioFormat parameters
+    public  static final int     SAMPLE_RATE = 44100;
+    private static final int     SAMPLE_SIZE = 16;
+    private static final int     CHANNELS = 2;
+    private static final boolean SIGNED = true;
+    private static final boolean BIG_ENDIAN = false;
+
+    // Chunk of audio processed at one time
+    public static final int BUFFER_SIZE = 1000;
+    public static final int SAMPLES_PER_BUFFER = BUFFER_SIZE / 2;
+    
+    // Sample time values
+    public static final double SAMPLE_TIME_IN_SECS = 1.0 / SAMPLE_RATE;
+    public static final double BUFFER_TIME_IN_SECS = SAMPLE_TIME_IN_SECS * SAMPLES_PER_BUFFER;
+    
+    private static AudioFormat format;
+    private static DataLine.Info info;
+    private static SourceDataLine auline;
+    private static int bufferCount;
+    private static byte [] sampleData = new byte[BUFFER_SIZE];    
+    
+    private static boolean available = false;
+    
+    static {
+        
+        boolean joalFound = false;
+        try {
+            Class.forName("com.jogamp.openal.ALFactory");
+            joalFound = true;
+        } catch(ClassNotFoundException e){
+            // Joal not found on classpath
+        }            
+            
+        if(joalFound) {
+        
+            alc = ALFactory.getALC();
+            al = ALFactory.getAL();
+            String deviceSpecifier;
+
+            // Get handle to default device.
+            device = alc.alcOpenDevice(null);
+            if (device == null) {
+                throw new ALException("Error opening default OpenAL device");
+            }
+        
+            // Get the device specifier.
+            deviceSpecifier = alc.alcGetString(device, ALC.ALC_DEVICE_SPECIFIER);
+            if (deviceSpecifier == null) {
+                throw new ALException("Error getting specifier for default OpenAL device");
+            }
+                
+            // Create audio context.
+            context = alc.alcCreateContext(device, null);
+            if (context == null) {
+                throw new ALException("Error creating OpenAL context");
+            }
+        
+            // Set active context.
+            alc.alcMakeContextCurrent(context);
+        
+            // Check for an error.
+            if (alc.alcGetError(device) != ALC.ALC_NO_ERROR) {
+                throw new ALException("Error making OpenAL context current");
+            }
+        
+            System.out.println("OpenAL audio sink using device: " + deviceSpecifier);        
+            available = true;
+        }
+    }
+    
+    @Override
+    public boolean isDataAvailable(int data_size) {
+        return false;
+    }
+    
+    @Override
+    public void writeData(byte[] sampleData, int data_size) {
+       
+    }
+
+    @Override
+    public int getDataAvailable() {
+        return 0;
+    }
+
+    public static boolean isAvailable() {
+        return available;
+    }
+}