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https://github.com/DSheirer/sdrtrunk.git
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Initial commit of redesigned internal processing and audio management.
Note: Several of the decoders are currently non-functioning in this commit. If you want the latest functioning codebase, please checkout the commit prior to this one. All decoders will eventually be updated with this new architecture. Currently broken: - Logging and recording - Aux decoders (Fleetsync/MDC/LoJack/Tait) - LTR/Passport decoders Changes in this commit: - Module architecture for decoders and components with central provisioning by the DecoderFactory - Transition from Complex sample stream processing to float buffer processing for improved memory management - Redesigned filter structures - to support buffers and streams - Resolved several memory leak issues - Universal sharing of the thread pool manager - Added centralized audio management with call/user prioritization and new gui with mute/volume controls - Embedded audio metadata for eventual streaming support - Redesigned ProcessingChain to support independent re-use - Added new TrafficChannelManager to handle traffic channel allocations - Traffic Channel pool size and Call timeout available in P25 and MPT1327 configs - Redesigned channel and decoder gui components
This commit is contained in:
denny
273
src/module/decode/p25/message/hdu/HDUMessage.java
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273
src/module/decode/p25/message/hdu/HDUMessage.java
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package module.decode.p25.message.hdu;
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import module.decode.p25.message.P25Message;
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import module.decode.p25.reference.DataUnitID;
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import module.decode.p25.reference.Encryption;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import alias.AliasList;
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import bits.BinaryMessage;
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import edac.CRC;
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import edac.Golay18;
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import edac.ReedSolomon_63_47_17;
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public class HDUMessage extends P25Message
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{
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private final static Logger mLog = LoggerFactory.getLogger( HDUMessage.class );
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public static final int[] MESSAGE_INDICATOR_A = { 64,65,66,67,68,69,82,83,
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84,85,86,87,100,101,102,103,104,105,118,119,120,121,122,123,136,137,138,
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139,140,141,154,155,156,157,158,159 };
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public static final int[] MESSAGE_INDICATOR_B = { 172,173,174,175,176,177,
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190,191,192,193,194,195,208,209,210,211,212,213,226,227,228,229,230,231,
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244,245,246,247,248,249,262,263,264,265,266,267 };
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public static final int[] VENDOR_ID = { 280,281,282,283,284,285,298,299 };
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public static final int[] ALGORITHM_ID = { 300,301,302,303,316,317,318,319 };
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public static final int[] KEY_ID = { 320,321,334,335,336,337,338,339,352,
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353,354,355,356,357,370,371 };
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public static final int[] TALKGROUP_ID = { 372,373,374,375,388,389,390,391,
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392,393,406,407,408,409,410,411 };
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public static final int[] GOLAY_WORD_STARTS = { 64,82,100,118,136,154,172,
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190,208,226,244,262,280,298,316,334,352,370,388,406,424,442,460,478,
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496,514,532,550,568,586,604,622,640,658,676,694 };
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public static final int[] CW_HEX_0 = { 64,65,66,67,68,69 };
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public static final int[] CW_HEX_1 = { 82,83,84,85,86,87 };
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public static final int[] CW_HEX_2 = { 100,101,102,103,104,105 };
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public static final int[] CW_HEX_3 = { 118,119,120,121,122,123 };
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public static final int[] CW_HEX_4 = { 136,137,138,139,140,141 };
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public static final int[] CW_HEX_5 = { 154,155,156,157,158,159 };
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public static final int[] CW_HEX_6 = { 172,173,174,175,176,177 };
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public static final int[] CW_HEX_7 = { 190,191,192,193,194,195 };
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public static final int[] CW_HEX_8 = { 208,209,210,211,212,213 };
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public static final int[] CW_HEX_9 = { 226,227,228,229,230,231 };
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public static final int[] CW_HEX_10 = { 244,245,246,247,248,249 };
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public static final int[] CW_HEX_11 = { 262,263,264,265,266,267 };
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public static final int[] CW_HEX_12 = { 280,281,282,283,284,285 };
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public static final int[] CW_HEX_13 = { 298,299,300,301,302,303 };
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public static final int[] CW_HEX_14 = { 316,317,318,319,320,321 };
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public static final int[] CW_HEX_15 = { 334,335,336,337,338,339 };
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public static final int[] CW_HEX_16 = { 352,353,354,355,356,357 };
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public static final int[] CW_HEX_17 = { 370,371,372,373,374,375 };
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public static final int[] CW_HEX_18 = { 388,389,390,391,392,393 };
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public static final int[] CW_HEX_19 = { 406,407,408,409,410,411 };
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public static final int[] RS_HEX_0 = { 424,425,426,427,428,429 };
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public static final int[] RS_HEX_1 = { 442,443,444,445,446,447 };
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public static final int[] RS_HEX_2 = { 460,461,462,463,464,465 };
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public static final int[] RS_HEX_3 = { 478,479,480,481,482,483 };
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public static final int[] RS_HEX_4 = { 496,497,498,499,500,501 };
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public static final int[] RS_HEX_5 = { 514,515,516,517,518,519 };
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public static final int[] RS_HEX_6 = { 532,533,534,535,536,537 };
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public static final int[] RS_HEX_7 = { 550,551,552,553,554,555 };
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public static final int[] RS_HEX_8 = { 568,569,570,571,572,573 };
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public static final int[] RS_HEX_9 = { 586,587,588,589,590,591 };
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public static final int[] RS_HEX_10 = { 604,605,606,607,608,609 };
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public static final int[] RS_HEX_11 = { 622,623,624,625,626,627 };
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public static final int[] RS_HEX_12 = { 640,641,642,643,644,645 };
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public static final int[] RS_HEX_13 = { 658,659,660,661,662,663 };
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public static final int[] RS_HEX_14 = { 676,677,678,679,680,681 };
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public static final int[] RS_HEX_15 = { 694,695,696,697,698,699 };
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/* Reed-Solomon(36,20,17) code protects the header word. Maximum
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* correctable errors are: Hamming Distance(17) / 2 = 8 */
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public static final ReedSolomon_63_47_17 mReedSolomonDecoder =
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new ReedSolomon_63_47_17( 8 );
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public HDUMessage( BinaryMessage message, DataUnitID duid,
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AliasList aliasList )
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{
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super( message, duid, aliasList );
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/* NID CRC is checked in the message framer, thus a constructed message
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* means it passed the CRC */
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mCRC = new CRC[ 3 ];
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mCRC[ 0 ] = CRC.PASSED;
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checkCRC();
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}
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private void checkCRC()
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{
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/* Golay( 18,6,18 ) error detection and correction */
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for( int index: GOLAY_WORD_STARTS )
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{
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Golay18.checkAndCorrect( mMessage, index );
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}
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mCRC[ 1 ] = CRC.PASSED;
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/* Reed-Solomon( 36,20,17 ) error detection and correction
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* Check the Reed-Solomon parity bits. The RS decoder expects the link
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* control data and reed solomon parity hex codewords in reverse order.
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* The RS(24,12,13) code used by P25 removes the left-hand 47 data hex
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* words, so we replace them with zeros. */
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int[] input = new int [63];
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int[] output = new int [63];
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input[ 0 ] = mMessage.getInt( RS_HEX_15 );
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input[ 1 ] = mMessage.getInt( RS_HEX_14 );
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input[ 2 ] = mMessage.getInt( RS_HEX_13 );
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input[ 3 ] = mMessage.getInt( RS_HEX_12 );
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input[ 4 ] = mMessage.getInt( RS_HEX_11 );
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input[ 5 ] = mMessage.getInt( RS_HEX_10 );
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input[ 6 ] = mMessage.getInt( RS_HEX_9 );
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input[ 7 ] = mMessage.getInt( RS_HEX_8 );
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input[ 8 ] = mMessage.getInt( RS_HEX_7 );
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input[ 9 ] = mMessage.getInt( RS_HEX_6 );
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input[ 10 ] = mMessage.getInt( RS_HEX_5 );
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input[ 11 ] = mMessage.getInt( RS_HEX_4 );
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input[ 12 ] = mMessage.getInt( RS_HEX_3 );
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input[ 13 ] = mMessage.getInt( RS_HEX_2 );
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input[ 14 ] = mMessage.getInt( RS_HEX_1 );
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input[ 15 ] = mMessage.getInt( RS_HEX_0 );
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input[ 16 ] = mMessage.getInt( CW_HEX_19 );
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input[ 17 ] = mMessage.getInt( CW_HEX_18 );
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input[ 18 ] = mMessage.getInt( CW_HEX_17 );
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input[ 19 ] = mMessage.getInt( CW_HEX_16 );
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input[ 20 ] = mMessage.getInt( CW_HEX_15 );
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input[ 21 ] = mMessage.getInt( CW_HEX_14 );
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input[ 22 ] = mMessage.getInt( CW_HEX_13 );
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input[ 23 ] = mMessage.getInt( CW_HEX_12 );
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input[ 24 ] = mMessage.getInt( CW_HEX_11 );
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input[ 25 ] = mMessage.getInt( CW_HEX_10 );
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input[ 26 ] = mMessage.getInt( CW_HEX_9 );
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input[ 27 ] = mMessage.getInt( CW_HEX_8 );
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input[ 28 ] = mMessage.getInt( CW_HEX_7 );
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input[ 29 ] = mMessage.getInt( CW_HEX_6 );
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input[ 30 ] = mMessage.getInt( CW_HEX_5 );
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input[ 31 ] = mMessage.getInt( CW_HEX_4 );
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input[ 32 ] = mMessage.getInt( CW_HEX_3 );
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input[ 33 ] = mMessage.getInt( CW_HEX_2 );
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input[ 34 ] = mMessage.getInt( CW_HEX_1 );
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input[ 35 ] = mMessage.getInt( CW_HEX_0 );
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/* indexes 36 - 62 are defaulted to zero */
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boolean irrecoverableErrors = mReedSolomonDecoder.decode( input, output );
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if( irrecoverableErrors )
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{
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mCRC[ 2 ] = CRC.FAILED_CRC;
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}
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else
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{
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mCRC[ 2 ] = CRC.PASSED;
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/* Only fix the codeword data hex codewords */
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repairHexCodeword( input, output, 16, CW_HEX_19 );
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repairHexCodeword( input, output, 17, CW_HEX_18 );
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repairHexCodeword( input, output, 18, CW_HEX_17 );
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repairHexCodeword( input, output, 19, CW_HEX_16 );
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repairHexCodeword( input, output, 20, CW_HEX_15 );
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repairHexCodeword( input, output, 21, CW_HEX_14 );
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repairHexCodeword( input, output, 22, CW_HEX_13 );
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repairHexCodeword( input, output, 23, CW_HEX_12 );
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repairHexCodeword( input, output, 24, CW_HEX_11 );
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repairHexCodeword( input, output, 25, CW_HEX_10 );
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repairHexCodeword( input, output, 26, CW_HEX_9 );
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repairHexCodeword( input, output, 27, CW_HEX_8 );
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repairHexCodeword( input, output, 28, CW_HEX_7 );
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repairHexCodeword( input, output, 29, CW_HEX_6 );
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repairHexCodeword( input, output, 30, CW_HEX_5 );
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repairHexCodeword( input, output, 31, CW_HEX_4 );
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repairHexCodeword( input, output, 32, CW_HEX_3 );
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repairHexCodeword( input, output, 33, CW_HEX_2 );
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repairHexCodeword( input, output, 34, CW_HEX_1 );
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repairHexCodeword( input, output, 35, CW_HEX_0 );
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}
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}
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private void repairHexCodeword( int[] input, int[] output, int index, int[] indexSet )
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{
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if( input[ index ] != output[ index ] )
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{
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mMessage.load( indexSet[ 0 ], 6, output[ index ] );
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mCRC[ 2 ] = CRC.CORRECTED;
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}
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}
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@Override
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public String getMessage()
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{
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StringBuilder sb = new StringBuilder();
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sb.append( "NAC:" );
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sb.append( getNAC() );
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sb.append( " " );
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sb.append( getDUID().getLabel() );
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sb.append( " TALKGROUP:" + getTalkgroupID() );
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Encryption encryption = getEncryption();
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if( encryption != Encryption.UNENCRYPTED )
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{
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sb.append( " ENCRYPTION:" );
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if( encryption == Encryption.UNKNOWN )
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{
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sb.append( "UNK ALGO ID:" );
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sb.append( mMessage.getInt( ALGORITHM_ID ) );
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}
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else
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{
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sb.append( encryption.name() );
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}
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sb.append( " KEY ID:" + getKeyID() );
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sb.append( " MSG INDICATOR:" + getMessageIndicator() );
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}
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else
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{
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sb.append( " UNENCRYPTED" );
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}
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sb.append( " " );
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sb.append( mMessage.toString() );
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return sb.toString();
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}
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public String getMessageIndicator()
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{
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StringBuilder sb = new StringBuilder();
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sb.append( mMessage.getHex( MESSAGE_INDICATOR_A, 9 ) );
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sb.append( mMessage.getHex( MESSAGE_INDICATOR_B, 9 ) );
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return sb.toString();
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}
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public Encryption getEncryption()
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{
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return Encryption.fromValue( mMessage.getInt( ALGORITHM_ID ) );
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}
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public boolean isEncrypted()
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{
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return getEncryption() != Encryption.UNENCRYPTED;
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}
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public int getKeyID()
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{
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return mMessage.getInt( KEY_ID );
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}
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public String getTalkgroupID()
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{
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return mMessage.getHex( TALKGROUP_ID, 4 );
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}
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@Override
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public String getToID()
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{
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return getTalkgroupID();
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}
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public boolean isValid()
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{
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return mCRC[ 2 ] != null && mCRC[ 2 ] != CRC.FAILED_CRC;
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}
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}
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