Initial commit of redesigned internal processing and audio management.

Note: Several of the decoders are currently non-functioning in this
commit.  If you want the latest functioning codebase, please checkout
the commit prior to this one.  All decoders will eventually be updated
with this new architecture.

Currently broken:
- Logging and recording
- Aux decoders (Fleetsync/MDC/LoJack/Tait)
- LTR/Passport decoders

Changes in this commit:
- Module architecture for decoders and components with central
provisioning by the DecoderFactory
- Transition from Complex sample stream processing to float buffer
processing for improved memory management
- Redesigned filter structures - to support buffers and streams
- Resolved several memory leak issues
- Universal sharing of the thread pool manager
- Added centralized audio management with call/user prioritization and
new gui with mute/volume controls
- Embedded audio metadata for eventual streaming support
- Redesigned ProcessingChain to support independent re-use
- Added new TrafficChannelManager to handle traffic channel allocations
- Traffic Channel pool size and Call timeout available in P25 and
MPT1327 configs
- Redesigned channel and decoder gui components

src/module/decode/p25/message/ldu/LDUMessage.java

@@ -0,0 +1,93 @@
+package module.decode.p25.message.ldu;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import module.decode.p25.message.P25Message;
+import module.decode.p25.reference.DataUnitID;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import alias.AliasList;
+import bits.BinaryMessage;
+
+public abstract class LDUMessage extends P25Message
+{
+	private final static Logger mLog = LoggerFactory.getLogger( LDUMessage.class );
+
+	public static final int IMBE_FRAME_1 = 64;
+	public static final int IMBE_FRAME_2 = 208;
+	public static final int IMBE_FRAME_3 = 392;
+	public static final int IMBE_FRAME_4 = 576;
+	public static final int IMBE_FRAME_5 = 760;
+	public static final int IMBE_FRAME_6 = 944;
+	public static final int IMBE_FRAME_7 = 1128;
+	public static final int IMBE_FRAME_8 = 1312;
+	public static final int IMBE_FRAME_9 = 1488;
+
+	public static final int[] LOW_SPEED_DATA = { 1456,1457,1458,1459,1460,1461,
+		1462,1463,1472,1473,1474,1475,1476,1477,1478,1479 };
+
+	public LDUMessage( BinaryMessage message, DataUnitID duid,
+            AliasList aliasList )
+    {
+	    super( message, duid, aliasList );
+    }
+	
+	public abstract boolean isEncrypted();
+	
+	@Override
+    public String getMessage()
+    {
+	    return getMessageStub();
+    }
+	
+    public String getMessageStub()
+    {
+		StringBuilder sb = new StringBuilder();
+
+		sb.append( "NAC:" );
+		sb.append( getNAC() );
+		sb.append( " " );
+		sb.append( getDUID().getLabel() );
+		sb.append( " VOICE LSD:" );
+		sb.append( getLowSpeedData() );
+		sb.append( " " );
+		
+		return sb.toString();
+    }
+	
+	public String getLowSpeedData()
+	{
+		return mMessage.getHex( LOW_SPEED_DATA, 4 );
+	}
+
+	public boolean isValid()
+	{
+//		return mCRC[ 2 ] != null && mCRC[ 2 ] != CRC.FAILED_CRC;
+		return true;
+	}
+
+	/**
+	 * Returns a 162 byte array containing 9 IMBE voice frames of 18-bytes 
+	 * (144-bits) each.  Each frame is intact as transmitted and requires 
+	 * deinterleaving, error correction, derandomizing, etc.
+	 */
+	public List<byte[]> getIMBEFrames()
+	{
+		List<byte[]> frames = new ArrayList<byte[]>();
+		
+		frames.add( mMessage.get( IMBE_FRAME_1, IMBE_FRAME_1 + 144 ).toByteArray() );
+		frames.add( mMessage.get( IMBE_FRAME_2, IMBE_FRAME_2 + 144 ).toByteArray() );
+		frames.add( mMessage.get( IMBE_FRAME_3, IMBE_FRAME_3 + 144 ).toByteArray() );
+		frames.add( mMessage.get( IMBE_FRAME_4, IMBE_FRAME_4 + 144 ).toByteArray() );
+		frames.add( mMessage.get( IMBE_FRAME_5, IMBE_FRAME_5 + 144 ).toByteArray() );
+		frames.add( mMessage.get( IMBE_FRAME_6, IMBE_FRAME_6 + 144 ).toByteArray() );
+		frames.add( mMessage.get( IMBE_FRAME_7, IMBE_FRAME_7 + 144 ).toByteArray() );
+		frames.add( mMessage.get( IMBE_FRAME_8, IMBE_FRAME_8 + 144 ).toByteArray() );
+		frames.add( mMessage.get( IMBE_FRAME_9, IMBE_FRAME_9 + 144 ).toByteArray() );
+
+		return frames;
+	}
+}