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P25 Work in progress. Adds CRC checking to NID/DUID. Adds limiter to trellis decoder to prevent it from decoding an excessive error message. Updates channel state with initial handling/generation of call events.

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This commit is contained in:
dennis.sheirer
2014-12-14 02:34:19 +00:00
parent 0d8da161e1
commit 170688b95e
42 changed files with 1099 additions and 390 deletions
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38
src/decode/p25/message/tsbk/GroupChannelGrantExplicit.java
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@@ -2,6 +2,7 @@ package decode.p25.message.tsbk;
import alias.AliasList;
import bits.BitSetBuffer;
import decode.p25.message.tsbk.osp.control.IdentifierUpdate;
import decode.p25.reference.DataUnitID;
public abstract class GroupChannelGrantExplicit extends ChannelGrant
@@ -15,6 +16,9 @@ public abstract class GroupChannelGrantExplicit extends ChannelGrant
public static final int[] GROUP_ADDRESS = { 128,129,130,131,132,133,134,135,
136,137,138,139,140,141,142,143 };
private IdentifierUpdate mTransmitIdentifierUpdate;
private IdentifierUpdate mReceiveIdentifierUpdate;
public GroupChannelGrantExplicit( BitSetBuffer message,
DataUnitID duid,
AliasList aliasList )
@@ -69,4 +73,38 @@ public abstract class GroupChannelGrantExplicit extends ChannelGrant
{
return mMessage.getHex( GROUP_ADDRESS, 4 );
}
@Override
public void setIdentifierMessage( int identifier, IdentifierUpdate message )
{
if( identifier == getTransmitChannelID() )
{
mTransmitIdentifierUpdate = message;
}
if( identifier == getReceiveChannelID() )
{
mReceiveIdentifierUpdate = message;
}
}
@Override
public int[] getIdentifiers()
{
int[] identifiers = new int[ 2 ];
identifiers[ 0 ] = getTransmitChannelID();
identifiers[ 1 ] = getReceiveChannelID();
return identifiers;
}
public long getDownlinkFrequency()
{
return calculateDownlink( mTransmitIdentifierUpdate, getChannel() );
}
public long getUplinkFrequency()
{
return calculateUplink( mReceiveIdentifierUpdate, getChannel() );
}
}