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P25 Decoder work in progress

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dennis.sheirer
2014-11-14 12:53:32 +00:00
parent 46e3594c07
commit eee28a3449
28 changed files with 1033 additions and 97 deletions
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81
src/decode/p25/reference/Digit.java Normal file
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@@ -0,0 +1,81 @@
package decode.p25.reference;
import java.util.List;
public enum Digit
{
D0( "0", "A" ),
D1( "1", "B" ),
D2( "2", "C" ),
D3( "3", "D" ),
D4( "4", "-" ),
D5( "5", "-" ),
D6( "6", "-" ),
D7( "7", "-" ),
D8( "8", "-" ),
D9( "9", "-" ),
D10( "*", "-" ),
D11( "#", "-" ),
D12( "-", "-" ),
D13( "HOOK FLASH", "-" ),
D14( "PAUSE", "-" ),
D15( "ESC", "NULL" ),
DUNK( "?", "?" );
private String mValue;
private String mEscapedValue;
private Digit( String value, String escapedValue )
{
mValue = value;
mEscapedValue = escapedValue;
}
public String getValue()
{
return mValue;
}
public String getEscapedValue()
{
return mEscapedValue;
}
public static Digit fromValue( int value )
{
if( 0 <= value && value <= 15 )
{
return values()[ value ];
}
return DUNK;
}
public static String decode( List<Integer> values )
{
StringBuilder sb = new StringBuilder();
boolean escape = false;
for( Integer value: values )
{
Digit d = Digit.fromValue( value );
if( d == Digit.D15 )
{
escape = true;
}
else if( escape )
{
sb.append( d.getEscapedValue() );
escape = false;
}
else
{
sb.append( d.getValue() );
}
}
return sb.toString();
}
}

4
src/decode/p25/reference/Opcode.java
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@@ -4,14 +4,14 @@ public enum Opcode
{
GROUP_VOICE_CHANNEL_GRANT( "Group Voice Channel Grant", 0 ),
RESERVED_01( "Reserved", 1 ),
GROUP_VOICE_CHANNLE_GRANT_UPDATE( "Group Voice Channel Grant Update", 2 ),
GROUP_VOICE_CHANNEL_GRANT_UPDATE( "Group Voice Channel Grant Update", 2 ),
GROUP_VOICE_CHANNEL_GRANT_UPDATE_EXPLICIT( "Group Voice Channel Grant Update - Explicit", 3 ),
UNIT_TO_UNIT_VOICE_CHANNEL_GRANT( "Unit-to-Unit Voice Channel Grant", 4 ),
UNIT_TO_UNIT_ANSWER_REQUEST( "Unit-to-Unit Answer Request", 5 ),
UNIT_TO_UNIT_VOICE_CHANNEL_GRANT_UPDATE( "Unit-to-Unit Voice Channel Grant Update", 6 ),
RESERVED_07( "Reserved", 7 ),
TELEPHONE_INTERCONNECT_VOICE_CHANNEL_GRANT( "Telephone Interconnect Voice Channel Grant", 8 ),
RESERVED_09( "Reserved", 9 ),
TELEPHONE_INTERCONNECT_VOICE_CHANNEL_GRANT_UPDATE( "Telephone Interconnect Voice Channel Grant Update", 9 ),
TELEPHONE_INTERCONNECT_ANSWER_REQUEST( "Telephone Interconnect Answer Request", 10 ),
RESERVED_0B( "Reserved", 11 ),
RESERVED_0C( "Reserved", 12 ),