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Code Issues Packages Projects Releases 2 Wiki Activity

Adds TDMA channel IdentifierUpdate message parsing.

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This commit is contained in:
Denny Sheirer
2016-01-19 04:00:18 +00:00
parent c12f535f3c
commit 4066a4b3c3
3 changed files with 159 additions and 3 deletions
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7
src/module/decode/p25/message/tsbk/TSBKMessageFactory.java
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@@ -1,5 +1,7 @@
package module.decode.p25.message.tsbk;
import alias.AliasList;
import bits.BinaryMessage;
import module.decode.p25.message.tsbk.motorola.ControlChannelBaseStationIdentification;
import module.decode.p25.message.tsbk.motorola.MotorolaOpcode;
import module.decode.p25.message.tsbk.motorola.MotorolaTSBKMessage;
@@ -19,6 +21,7 @@ import module.decode.p25.message.tsbk.osp.control.ExtendedFunctionCommand;
import module.decode.p25.message.tsbk.osp.control.GroupAffiliationQuery;
import module.decode.p25.message.tsbk.osp.control.GroupAffiliationResponse;
import module.decode.p25.message.tsbk.osp.control.IdentifierUpdateNonVUHF;
import module.decode.p25.message.tsbk.osp.control.IdentifierUpdateTDMA;
import module.decode.p25.message.tsbk.osp.control.IdentifierUpdateVUHF;
import module.decode.p25.message.tsbk.osp.control.LocationRegistrationResponse;
import module.decode.p25.message.tsbk.osp.control.MessageUpdate;
@@ -56,8 +59,6 @@ import module.decode.p25.message.tsbk.osp.voice.UnitToUnitVoiceChannelGrantUpdat
import module.decode.p25.reference.DataUnitID;
import module.decode.p25.reference.Opcode;
import module.decode.p25.reference.Vendor;
import alias.AliasList;
import bits.BinaryMessage;
public class TSBKMessageFactory
{
@@ -119,6 +120,8 @@ public class TSBKMessageFactory
case IDENTIFIER_UPDATE_NON_VUHF:
return new IdentifierUpdateNonVUHF( message, duid,
aliasList );
case IDENTIFIER_UPDATE_TDMA:
return new IdentifierUpdateTDMA( message, duid, aliasList );
case IDENTIFIER_UPDATE_VHF_UHF_BANDS:
return new IdentifierUpdateVUHF( message, duid,
aliasList );

153
src/module/decode/p25/message/tsbk/osp/control/IdentifierUpdateTDMA.java Normal file
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@@ -0,0 +1,153 @@
package module.decode.p25.message.tsbk.osp.control;
import module.decode.p25.reference.DataUnitID;
import module.decode.p25.reference.Opcode;
import alias.AliasList;
import bits.BinaryMessage;
public class IdentifierUpdateTDMA extends IdentifierUpdate
{
public static final int[] CHANNEL_TYPE = { 84,85,86,87 };
public static final int TRANSMIT_OFFSET_SIGN = 88;
public static final int[] TRANSMIT_OFFSET = { 89,90,91,92,93,94,95,96,97,98,
99,100,101 };
public IdentifierUpdateTDMA( BinaryMessage message,
DataUnitID duid,
AliasList aliasList )
{
super( message, duid, aliasList );
}
@Override
public String getEventType()
{
return Opcode.IDENTIFIER_UPDATE_TDMA.getDescription();
}
public String getMessage()
{
StringBuilder sb = new StringBuilder();
sb.append( getMessageStub() );
sb.append( " IDEN:" + getIdentifier() );
sb.append( " BASE:" + getBaseFrequency() );
sb.append( " BW:" + getBandwidth() );
sb.append( " SPACING:" + getChannelSpacing() );
sb.append( " OFFSET:" + getTransmitOffset() );
sb.append( " TYPE:" + getChannelType().toString() );
return sb.toString();
}
public ChannelType getChannelType()
{
return ChannelType.fromValue( mMessage.getInt( CHANNEL_TYPE) );
}
/**
* Channel bandwidth in hertz
*/
public int getBandwidth()
{
return getChannelType().getBandwidth();
}
/**
* Transmit offset in hertz
*/
@Override
public long getTransmitOffset()
{
long offset = mMessage.getLong( TRANSMIT_OFFSET ) *
getChannelSpacing();
if( mMessage.get( TRANSMIT_OFFSET_SIGN ) )
{
return offset;
}
else
{
return -offset;
}
}
public enum ChannelType
{
TYPE_0( AccessType.FDMA, 12500, 1, Vocoder.HALF_RATE ),
TYPE_1( AccessType.FDMA, 12500, 1, Vocoder.FULL_RATE ),
TYPE_2( AccessType.FDMA, 6250, 1, Vocoder.HALF_RATE ),
TYPE_3( AccessType.TDMA, 12500, 2, Vocoder.HALF_RATE ),
TYPE_4( AccessType.TDMA, 25000, 4, Vocoder.HALF_RATE ),
TYPE_5( AccessType.TDMA, 12500, 2, Vocoder.HALF_RATE ), //HD8PSK simulcast
UNKNOWN( AccessType.UNKNOWN, 0, 0, Vocoder.HALF_RATE );
private AccessType mAccessType;
private int mBandwidth;
private int mSlotsPerCarrier;
private Vocoder mVocoder;
private ChannelType( AccessType accessType,
int bandwidth,
int slots,
Vocoder vocoder )
{
mAccessType = accessType;
mBandwidth = bandwidth;
mSlotsPerCarrier = slots;
mVocoder = vocoder;
}
public String toString()
{
StringBuilder sb = new StringBuilder();
sb.append( mAccessType.name() );
sb.append( " BW:" + mBandwidth );
sb.append( " SLOT/CARRIER:" + mSlotsPerCarrier );
sb.append( " VOCODER:" + mVocoder.name() );
return sb.toString();
}
public static ChannelType fromValue( int value )
{
if( 0 <= value && value <= 5 )
{
return ChannelType.values()[ value ];
}
return ChannelType.UNKNOWN;
}
public AccessType getAccessType()
{
return mAccessType;
}
public int getBandwidth()
{
return mBandwidth;
}
public int getSlotsPerCarrier()
{
return mSlotsPerCarrier;
}
public Vocoder getVocoder()
{
return mVocoder;
}
}
public enum AccessType
{
FDMA,TDMA,UNKNOWN;
}
public enum Vocoder
{
HALF_RATE, FULL_RATE;
}
}

2
src/module/decode/p25/reference/Opcode.java
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@@ -53,7 +53,7 @@ public enum Opcode
TDMA_SYNC_BROADCAST( "TDMA_SYNC_BCST ", "FDMA-TDMA Sync Broadcast", 48 ),
RESERVED_31( "RESERVED_31 ", "Reserved", 49 ),
RESERVED_32( "RESERVED_32 ", "Reserved", 50 ),
RESERVED_33( "RESERVED_33 ", "Reserved", 51 ),
IDENTIFIER_UPDATE_TDMA( "IDEN_UPDATE_TDMA", "Identifier Update for TDMA", 51 ),
IDENTIFIER_UPDATE_VHF_UHF_BANDS( "IDEN_UPDATE_VUHF", "Identifier Update for VHF/UHF Bands", 52 ),
TIME_DATE_ANNOUNCEMENT( "TIME_DATE_ANNOUN", "Time and Date Announcement", 53 ),
ROAMING_ADDRESS_COMMAND( "ROAM_ADDR_CMD ", "Roaming Address Command", 54 ),