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/reference/DataUnitID.java

@@ -0,0 +1,88 @@
+package module.decode.p25.reference;
+
+/**
+ * The Data Unit ID (DUID) is part of the Network ID (NID) field and indicates
+ * the type of message.
+ */
+public enum DataUnitID
+{
+	NID  ( -1,   64, false, "NID  ", "Network and Data Unit ID" ),
+	HDU  (  0,  712, false, "HDU  ", "Header Data Unit" ),
+	TDU  (  3,   64, false, "TDU  ", "Simple Terminator Data Unit" ),
+	LDU1 (  5, 1632, true,  "LDU1 ", "Logical Link Data Unit 1" ),
+	TSBK1(  7,  260, false, "TSBK1", "Trunking Signaling Block" ),
+	TSBK2(  7,  260, false, "TSBK2", "Trunking Signaling Block" ),
+	TSBK3(  7,  260, false, "TSBK3", "Trunking Signaling Block" ),
+	LDU2 ( 10, 1632, true,  "LDU2 ", "Logical Link Data Unit 2" ),
+	PDU0 ( 12,  260, false, "PDU0 ", "Packet Header Data Unit" ),
+	PDU1 ( 12,  356, false, "PDU1 ", "Packet Data Unit-Unconfirmed" ),
+	PDU2 ( 12,  452, false, "PDU2 ", "Packet Data Unit-Unconfirmed" ),
+	PDU3 ( 12,  548, false, "PDU3 ", "Packet Data Unit-Unconfirmed" ),
+	PDUC ( 12,  356, false, "PDUC", "Packet Data Unit-Confirmed" ),
+	TDULC( 15,  352, false, "TDULC", "Terminator Data Unit With Link Control" ),
+	UNKN ( -1,    0, false, "UNKWN", "Unknown" );
+	
+	private int mValue;
+	private int mMessageLength;
+	private boolean mParity;
+	private String mLabel;
+	private String mDescription;
+	
+	private DataUnitID( int value, int length, boolean parity, String label, 
+			String description )
+	{
+		mValue = value;
+		mMessageLength = length;
+		mParity = parity;
+		mLabel = label;
+		mDescription = description;
+	}
+	
+	public int getValue()
+	{
+		return mValue;
+	}
+	
+	public int getMessageLength()
+	{
+		return mMessageLength;
+	}
+	
+	public String getLabel()
+	{
+		return mLabel;
+	}
+	
+	public String getDescription()
+	{
+		return mDescription;
+	}
+	
+	public boolean getParity()
+	{
+		return mParity;
+	}
+	
+	public static DataUnitID fromValue( int value )
+	{
+		switch( value )
+		{
+			case 0:
+				return HDU;
+			case 3:
+				return TDU;
+			case 5:
+				return LDU1;
+			case 7:
+				return TSBK1;
+			case 10:
+				return LDU2;
+			case 12:
+				return PDU0;
+			case 15:
+				return TDULC;
+			default:
+				return UNKN;
+		}
+	}
+}