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Code Issues Packages Projects Releases 2 Wiki Activity

Adds Low Speed Data parsing to both LDU1 and LDU2

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dennis.sheirer
2015-01-03 00:42:04 +00:00
parent 77eeed78d2
commit bb27d5cb42
3 changed files with 46 additions and 57 deletions
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49
src/decode/p25/message/ldu/LDUMessage.java
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@@ -2,17 +2,33 @@ package decode.p25.message.ldu;
import alias.AliasList;
import bits.BitSetBuffer;
import decode.p25.P25Interleave;
import decode.p25.message.P25Message;
import decode.p25.reference.DataUnitID;
import edac.CRC;
public class LDUMessage extends P25Message
{
public static final int IMBE_1 = 64;
public static final int IMBE_2 = 208;
public static final int IMBE_3 = 392;
public static final int IMBE_4 = 576;
public static final int IMBE_5 = 760;
public static final int IMBE_6 = 944;
public static final int IMBE_7 = 1128;
public static final int IMBE_8 = 1312;
public static final int IMBE_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( BitSetBuffer message, DataUnitID duid,
AliasList aliasList )
{
super( message, duid, aliasList );
deinterleaveVoiceFrames();
/* NID CRC is checked in the message framer, thus a constructed message
* means it passed the CRC */
mCRC = new CRC[ 2 ];
@@ -21,24 +37,45 @@ public class LDUMessage extends P25Message
@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( " " );
sb.append( " LSD:" );
sb.append( getLowSpeedData() );
sb.append( mMessage.toString() );
return sb.toString();
return sb.toString();
}
public String getLowSpeedData()
{
return mMessage.getHex( LOW_SPEED_DATA, 4 );
}
private void deinterleaveVoiceFrames()
{
P25Interleave.deinterleaveVoice( mMessage, IMBE_1, IMBE_1 + 144 );
P25Interleave.deinterleaveVoice( mMessage, IMBE_2, IMBE_2 + 144 );
P25Interleave.deinterleaveVoice( mMessage, IMBE_3, IMBE_3 + 144 );
P25Interleave.deinterleaveVoice( mMessage, IMBE_4, IMBE_4 + 144 );
P25Interleave.deinterleaveVoice( mMessage, IMBE_5, IMBE_5 + 144 );
P25Interleave.deinterleaveVoice( mMessage, IMBE_6, IMBE_6 + 144 );
P25Interleave.deinterleaveVoice( mMessage, IMBE_7, IMBE_7 + 144 );
P25Interleave.deinterleaveVoice( mMessage, IMBE_8, IMBE_8 + 144 );
P25Interleave.deinterleaveVoice( mMessage, IMBE_9, IMBE_9 + 144 );
}
/* Temporary override */
public boolean isValid()
{
return true;
}
}