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91 lines
2.2 KiB
Java
91 lines
2.2 KiB
Java
package module.decode.p25.reference;
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/**
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* The Data Unit ID (DUID) is part of the Network ID (NID) field and indicates
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* the type of message.
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*/
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public enum DataUnitID
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{
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NID ( -1, 64, false, "NID ", "Network and Data Unit ID" ),
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HDU ( 0, 712, false, "HDU ", "Header Data Unit" ),
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TDU ( 3, 64, false, "TDU ", "Simple Terminator Data Unit" ),
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LDU1 ( 5, 1632, true, "LDU1 ", "Logical Link Data Unit 1" ),
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VSELP1( 6, 1680, false, "VSEL1", "Motorola VSELP Unit 1" ),
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TSBK1( 7, 260, false, "TSBK1", "Trunking Signaling Block" ),
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TSBK2( 7, 260, false, "TSBK2", "Trunking Signaling Block" ),
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TSBK3( 7, 260, false, "TSBK3", "Trunking Signaling Block" ),
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VSELP2( 9, 1680, false, "VSEL1", "Motorola VSELP Unit 1" ),
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LDU2 ( 10, 1632, true, "LDU2 ", "Logical Link Data Unit 2" ),
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PDU0 ( 12, 260, false, "PDU0 ", "Packet Header Data Unit" ),
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PDU1 ( 12, 356, false, "PDU1 ", "Packet Data Unit-Unconfirmed" ),
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PDU2 ( 12, 452, false, "PDU2 ", "Packet Data Unit-Unconfirmed" ),
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PDU3 ( 12, 548, false, "PDU3 ", "Packet Data Unit-Unconfirmed" ),
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PDUC ( 12, 356, false, "PDUC", "Packet Data Unit-Confirmed" ),
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TDULC( 15, 352, false, "TDULC", "Terminator Data Unit With Link Control" ),
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UNKN ( -1, 0, false, "UNKWN", "Unknown" );
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private int mValue;
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private int mMessageLength;
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private boolean mParity;
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private String mLabel;
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private String mDescription;
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private DataUnitID( int value, int length, boolean parity, String label,
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String description )
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{
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mValue = value;
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mMessageLength = length;
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mParity = parity;
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mLabel = label;
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mDescription = description;
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}
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public int getValue()
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{
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return mValue;
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}
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public int getMessageLength()
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{
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return mMessageLength;
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}
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public String getLabel()
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{
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return mLabel;
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}
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public String getDescription()
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{
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return mDescription;
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}
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public boolean getParity()
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{
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return mParity;
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}
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public static DataUnitID fromValue( int value )
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{
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switch( value )
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{
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case 0:
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return HDU;
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case 3:
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return TDU;
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case 5:
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return LDU1;
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case 7:
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return TSBK1;
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case 10:
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return LDU2;
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case 12:
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return PDU0;
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case 15:
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return TDULC;
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default:
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return UNKN;
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}
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}
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}
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