GitHub/sdrtrunk
1
0
Fork 0
mirror of https://github.com/DSheirer/sdrtrunk.git synced 2026-11-13 09:07:27 -05:00
Code Issues Packages Projects Releases 2 Wiki Activity

P25 Decoder work in progress

Browse Source
This commit is contained in:
dennis.sheirer
2014-11-14 12:53:32 +00:00
parent 46e3594c07
commit eee28a3449
28 changed files with 1033 additions and 97 deletions
Download Patch File Download Diff File Expand all files Collapse all files

159
src/decode/p25/message/pdu/PDUMessage.java Normal file
View File

@@ -0,0 +1,159 @@
package decode.p25.message.pdu;
import alias.AliasList;
import bits.BitSetBuffer;
import decode.p25.message.P25Message;
import decode.p25.reference.DataUnitID;
import decode.p25.reference.PDUFormat;
import decode.p25.reference.ServiceAccessPoint;
import decode.p25.reference.Vendor;
public class PDUMessage extends P25Message
{
public static final int PDU_HEADER_DUMMY1 = 66; //Always 0
public static final int PDU_HEADER_CONFIRMATION_REQUIRED = 67;
public static final int PDU_HEADER_DIRECTION_FLAG = 68;
public static final int[] PDU_HEADER_FORMAT = { 69,70,71,72,73 };
public static final int PDU_HEADER_DUMMY2 = 74; //Always 1
public static final int PDU_HEADER_DUMMY3 = 75; //Always 1
public static final int[] PDU_HEADER_SAP_ID = { 76,77,78,79,80 };
public static final int[] PDU_HEADER_VENDOR_ID = { 81,82,83,84,85,86,87,88 };
public static final int[] PDU_HEADER_LOGICAL_LINK_ID = { 89,90,91,92,93,94,
97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114 };
public static final int PDU_HEADER_FULL_MESSAGE_FLAG = 115;
public static final int[] PDU_HEADER_BLOCKS_TO_FOLLOW = { 116,117,118,119,
120,121,122 };
public static final int PDU_HEADER_DUMMY4 = 123; //Always 0
public static final int PDU_HEADER_DUMMY5 = 124; //Always 0
public static final int PDU_HEADER_DUMMY6 = 125; //Always 0
public static final int[] PDU_HEADER_PAD_BLOCKS = { 126,127,128,129,130 };
public static final int PDU_HEADER_RESYNCHRONIZE_FLAG = 131;
public static final int[] PDU_HEADER_SEQUENCE_NUMBER = { 132,133,134 };
public static final int[] PDU_HEADER_FRAGMENT_SEQUENCE_NUMBER = { 135,136,
137,138 };
public static final int PDU_HEADER_DUMMY7 = 139; //Always 0
public static final int PDU_HEADER_DUMMY8 = 140; //Always 0
public static final int[] PDU_HEADER_DATA_HEADER_OFFSET = { 141,142,143,
144,145,146 };
public static final int[] PDU_HEADER_CRC = { 147,148,149,150,151,152,153,154,
155,156,157,158,159,160,161,162 };
//status 166,167
public PDUMessage( BitSetBuffer message, DataUnitID duid, AliasList aliasList )
{
super( message, duid, aliasList );
}
public String getConfirmation()
{
return mMessage.get( PDU_HEADER_CONFIRMATION_REQUIRED ) ? "CON" : "UNC";
}
public String getDirection()
{
return mMessage.get( PDU_HEADER_DIRECTION_FLAG ) ? "OSP" : "ISP";
}
public PDUFormat getFormat()
{
return PDUFormat.fromValue( mMessage.getInt( PDU_HEADER_FORMAT ) );
}
public ServiceAccessPoint getServiceAccessPoint()
{
return ServiceAccessPoint.fromValue( mMessage.getInt( PDU_HEADER_SAP_ID ) );
}
public Vendor getVendor()
{
return Vendor.fromValue( mMessage.getInt( PDU_HEADER_VENDOR_ID ) );
}
public String getLogicalLinkID()
{
return mMessage.getHex( PDU_HEADER_LOGICAL_LINK_ID, 6 );
}
public boolean isFullMessage()
{
return mMessage.get( PDU_HEADER_FULL_MESSAGE_FLAG );
}
public int getBlockCount()
{
return mMessage.getInt( PDU_HEADER_BLOCKS_TO_FOLLOW );
}
public int getPadBlockCount()
{
return mMessage.getInt( PDU_HEADER_PAD_BLOCKS );
}
public boolean isResync()
{
return mMessage.get( PDU_HEADER_RESYNCHRONIZE_FLAG );
}
public int getSequenceNumber()
{
return mMessage.getInt( PDU_HEADER_SEQUENCE_NUMBER );
}
public int getFragmentSequenceNumber()
{
return mMessage.getInt( PDU_HEADER_FRAGMENT_SEQUENCE_NUMBER );
}
public int getDataHeaderOffset()
{
return mMessage.getInt( PDU_HEADER_DATA_HEADER_OFFSET );
}
@Override
public String getMessage()
{
StringBuilder sb = new StringBuilder();
sb.append( "NAC:" );
sb.append( getNAC() );
sb.append( " " );
sb.append( getDUID().name() );
sb.append( " " );
sb.append( getConfirmation() );
sb.append( " " );
sb.append( getDirection() );
sb.append( " FMT:" );
sb.append( getFormat().getLabel() );
switch( getFormat() )
{
case ALTERNATE_MULTI_BLOCK_TRUNKING_CONTROL:
case UNCONFIRMED_MULTI_BLOCK_TRUNKING_CONTROL:
sb.append( " SAP:" );
sb.append( getServiceAccessPoint().getLabel() );
sb.append( " VEND:" );
sb.append( getVendor().getLabel() );
sb.append( " LLID:" );
sb.append( getLogicalLinkID() );
sb.append( " FMF:" );
sb.append( isFullMessage() ? "1" : "0" );
sb.append( " BLKS:" );
sb.append( getBlockCount() );
sb.append( " PAD:" );
sb.append( getPadBlockCount() );
sb.append( " RESYNC:" );
sb.append( isResync() ? "1" : "0" );
sb.append( " SEQ:" );
sb.append( getSequenceNumber() );
sb.append( " FRAG:" );
sb.append( getFragmentSequenceNumber() );
sb.append( " DHO:" );
sb.append( getDataHeaderOffset() );
break;
default:
}
return sb.toString();
}
}