Initial code check in continued

src/decode/ltrstandard/LTRStandardMessage.java

@@ -0,0 +1,256 @@
+/*******************************************************************************
+ *     SDR Trunk 
+ *     Copyright (C) 2014 Dennis Sheirer
+ * 
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ * 
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ * 
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>
+ ******************************************************************************/
+package decode.ltrstandard;
+
+import java.text.DecimalFormat;
+import java.text.SimpleDateFormat;
+
+import log.Log;
+import message.Message;
+import message.MessageDirection;
+import message.MessageType;
+import alias.Alias;
+import alias.AliasList;
+import bits.BitSetBuffer;
+import crc.CRC;
+import crc.CRCLTR;
+import decode.DecoderType;
+
+public abstract class LTRStandardMessage extends Message
+{
+	protected static final String sUNKNOWN = "**UNKNOWN**";
+	protected static final int sINT_NULL_VALUE = -1;
+	protected static final double sDOUBLE_NULL_VALUE = -1.0D;
+	protected SimpleDateFormat mDatestampFormatter = 
+			new SimpleDateFormat( "yyyyMMdd HHmmss" );
+	protected DecimalFormat mDecimalFormatter = new DecimalFormat("0.00000");
+	
+    protected static final int[] sSYNC = { 8,7,6,5,4,3,2,1,0 };
+	protected static final int[] sAREA = { 9 };
+	protected static final int[] sCHANNEL = { 14,13,12,11,10 };
+	protected static final int[] sHOME_REPEATER = { 19,18,17,16,15 };
+	protected static final int[] sGROUP = { 27,26,25,24,23,22,21,20 };
+	protected static final int[] sFREE = { 32,31,30,29,28 };
+	protected static final int[] sCRC = { 39,38,37,36,35,34,33 };
+	
+	protected BitSetBuffer mMessage;
+	protected MessageType mMessageType;
+	protected CRC mCRC;
+	protected AliasList mAliasList;
+	
+    public LTRStandardMessage( BitSetBuffer message, 
+    					  MessageDirection direction,
+    					  AliasList list )
+    {
+        mMessage = message;
+        mCRC = CRCLTR.check( message, direction );
+        mAliasList = list;
+    }
+    
+    public MessageType getMessageType()
+    {
+    	return mMessageType;
+    }
+    
+    public boolean isValid()
+    {
+    	return mCRC != CRC.FAILED_CRC && mCRC != CRC.FAILED_PARITY;
+    }
+    
+	/**
+	 * Appends spaces to the end of the stringbuilder to make it length long
+	 */
+	protected void pad( StringBuilder sb, int length )
+	{
+		while( sb.length() < length )
+		{
+			sb.append( " " );
+		}
+	}
+
+	@Override
+    public String getBinaryMessage()
+    {
+		return mMessage.toString();
+    }
+
+	/**
+	 * Returns a value formatted in hex notation.
+	 * 
+	 * @param value - integer value
+	 * @return - hex digits returned
+	 */
+	protected static String getHex( int value, int digits )
+	{
+		return String.format( "%0" + digits + "X", value );
+	}
+	
+    protected int getInt( int[] bits )
+    {
+    	int retVal = 0;
+    	
+    	for( int x = 0; x < bits.length; x++ )
+    	{
+    		if( mMessage.get( bits[ x ] ) )
+    		{
+    			retVal += 1<<x;
+    		}
+    	}
+    	
+    	return retVal;
+    }
+    
+    /**
+     * Pads an integer value with additional zeroes to make it decimalPlaces long
+     */
+    public String format( int number, int decimalPlaces )
+    {
+    	StringBuilder sb = new StringBuilder();
+
+    	int paddingRequired = decimalPlaces - ( String.valueOf( number ).length() );
+
+    	for( int x = 0; x < paddingRequired; x++)
+    	{
+    		sb.append( "0" );
+    	}
+    	
+    	sb.append( number );
+    	
+    	return sb.toString();
+    }
+    
+    public String format( String val, int places )
+    {
+    	StringBuilder sb = new StringBuilder();
+    	
+    	sb.append( val );
+
+    	while( sb.length() < places )
+    	{
+    		sb.append( " " );
+    	}
+    	
+    	return sb.toString();
+    }
+
+    public CRC getCRC()
+    {
+    	return mCRC;
+    }
+    
+	public int getArea()
+	{
+		return getInt( sAREA );
+	}
+
+	public int getChannel()
+	{
+		return getInt( sCHANNEL );
+	}
+	
+	public int getHomeRepeater()
+	{
+		return getInt( sHOME_REPEATER );
+	}
+	
+	public int getGroup()
+	{
+		return getInt( sGROUP );
+	}
+
+	public String getTalkgroupID()
+	{
+		return getTalkgroupID( true );
+	}
+	
+	public String getTalkgroupID( boolean format )
+	{
+		StringBuilder sb = new StringBuilder();
+		
+		sb.append( getArea() );
+		
+		if( format )
+		{
+			sb.append( "-" );
+		}
+
+		sb.append( format( getHomeRepeater(), 2 ) );
+		
+		if( format )
+		{
+			sb.append( "-" );
+		}
+
+		sb.append( format( getGroup(), 3 ) );
+		
+		return sb.toString();
+	}
+	
+	public Alias getTalkgroupIDAlias()
+	{
+	    Log.debug( "LTRStandardMessage - getting alias for:" + getTalkgroupID() );
+		return mAliasList.getTalkgroupAlias( getTalkgroupID() );
+	}
+	
+	public int getFree()
+	{
+		return getInt( sFREE );
+	}
+	
+	public int getCRCChecksum()
+	{
+		return getInt( sCRC );
+	}
+	
+	@Override
+    public String getProtocol()
+    {
+	    return DecoderType.LTR_STANDARD.getDisplayString();
+    }
+
+	@Override
+    public String getEventType()
+    {
+		if( mMessageType != null )
+		{
+		    return mMessageType.getDisplayText();
+		}
+		else
+		{
+			return MessageType.UN_KNWN.getDisplayText();
+		}
+    }
+
+	@Override
+    public String getToID()
+    {
+	    return null;
+    }
+
+	@Override
+    public Alias getToIDAlias()
+    {
+	    return null;
+    }
+
+	@Override
+    public String getErrorStatus()
+    {
+	    return mCRC.getDisplayText();
+    }
+}