mirror of
https://github.com/DSheirer/sdrtrunk.git
synced 2026-11-12 16:47:31 -05:00
[WIP] new AFSK1200 decoder.
This commit is contained in:
Denny
@@ -1,17 +1,17 @@
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/*******************************************************************************
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* SDR Trunk
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* Copyright (C) 2014,2015 Dennis Sheirer
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*
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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******************************************************************************/
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@@ -20,156 +20,76 @@ package io.github.dsheirer.module.decode.fleetsync2;
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import io.github.dsheirer.alias.AliasList;
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import io.github.dsheirer.bits.MessageFramer;
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import io.github.dsheirer.bits.SyncPattern;
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import io.github.dsheirer.dsp.filter.Filters;
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import io.github.dsheirer.dsp.filter.fir.real.RealFIRFilter_RB_RB;
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import io.github.dsheirer.dsp.filter.halfband.real.HalfBandFilter_RB_RB;
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import io.github.dsheirer.dsp.fsk.FSK2Decoder;
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import io.github.dsheirer.dsp.fsk.FSK2Decoder.Output;
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import io.github.dsheirer.instrument.Instrumentable;
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import io.github.dsheirer.instrument.tap.Tap;
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import io.github.dsheirer.instrument.tap.TapGroup;
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import io.github.dsheirer.instrument.tap.stream.BinaryTap;
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import io.github.dsheirer.instrument.tap.stream.FloatBufferTap;
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import io.github.dsheirer.dsp.fsk.AFSK1200Decoder;
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import io.github.dsheirer.dsp.symbol.ISyncDetectListener;
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import io.github.dsheirer.dsp.symbol.SyncDetectProvider;
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import io.github.dsheirer.module.decode.Decoder;
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import io.github.dsheirer.module.decode.DecoderType;
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import io.github.dsheirer.sample.Listener;
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import io.github.dsheirer.sample.real.IFilteredRealBufferListener;
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import io.github.dsheirer.sample.real.RealBuffer;
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import java.util.ArrayList;
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import java.util.List;
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import io.github.dsheirer.sample.buffer.IReusableBufferListener;
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import io.github.dsheirer.sample.buffer.ReusableBuffer;
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/**
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* Fleetsync II Decoder - 1200 baud 2FSK decoder that can process 48k sample rate
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* floating point samples and output fully framed Fleetsync II messages
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* Fleetsync II Decoder
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*/
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public class Fleetsync2Decoder extends Decoder implements IFilteredRealBufferListener,
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Instrumentable
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public class Fleetsync2Decoder extends Decoder implements IReusableBufferListener, Listener<ReusableBuffer>,
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SyncDetectProvider
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{
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/* Decimated sample rate ( 48,000 / 2 = 24,000 ) feeding the decoder */
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private static final int sDECIMATED_SAMPLE_RATE = 24000;
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/* Baud or Symbol Rate */
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private static final int sSYMBOL_RATE = 1200;
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/* Message length - 5 x REVS + 16 x SYNC + 8 x 64Bit Blocks */
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protected static final int MESSAGE_LENGTH = 537;
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/* Message length - 5 x REVS + 16 x SYNC + 8 x 64Bit Blocks */
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private static final int sMESSAGE_LENGTH = 537;
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/* Instrumentation Taps */
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private ArrayList<TapGroup> mAvailableTaps;
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private static final String INSTRUMENT_BANDPASS_FILTER_TO_FSK2_DEMOD =
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"Tap Point: Bandpass Filter > < FSK2 Decoder";
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private static final String INSTRUMENT_FSK2_DECODER_TO_MESSAGE_FRAMER =
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"Tap Point: FSK2 Decoder > < Message Framer";
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private FSK2Decoder mFSKDecoder;
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private HalfBandFilter_RB_RB mDecimationFilter;
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private RealFIRFilter_RB_RB mBandPassFilter;
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protected AFSK1200Decoder mAFSK1200Decoder;
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private MessageFramer mMessageFramer;
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private Fleetsync2MessageProcessor mMessageProcessor;
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public Fleetsync2Decoder( AliasList aliasList )
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{
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mDecimationFilter = new HalfBandFilter_RB_RB(
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Filters.FIR_HALF_BAND_31T_ONE_EIGHTH_FCO.getCoefficients(), 1.0f, true );
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mBandPassFilter = new RealFIRFilter_RB_RB(
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Filters.FIRBP_1200FSK_24000FS.getCoefficients(), 1.02f );
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mDecimationFilter.setListener( mBandPassFilter );
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public Fleetsync2Decoder(AFSK1200Decoder afsk1200Decoder, AliasList aliasList)
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{
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mAFSK1200Decoder = afsk1200Decoder;
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mMessageFramer = new MessageFramer(SyncPattern.FLEETSYNC2.getPattern(), MESSAGE_LENGTH);
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mAFSK1200Decoder.setMessageFramer(mMessageFramer);
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mMessageFramer.setSyncDetectListener(mAFSK1200Decoder);
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mMessageProcessor = new Fleetsync2MessageProcessor(aliasList);
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mMessageFramer.addMessageListener(mMessageProcessor);
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mMessageProcessor.setMessageListener(getMessageListener());
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}
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mFSKDecoder = new FSK2Decoder( sDECIMATED_SAMPLE_RATE,
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sSYMBOL_RATE, Output.INVERTED );
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mBandPassFilter.setListener( mFSKDecoder );
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public Fleetsync2Decoder(AliasList aliasList)
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{
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this(new AFSK1200Decoder(MESSAGE_LENGTH, false), aliasList);
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}
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mMessageFramer = new MessageFramer(
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SyncPattern.FLEETSYNC2.getPattern(), sMESSAGE_LENGTH );
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mFSKDecoder.setListener( mMessageFramer );
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mMessageProcessor = new Fleetsync2MessageProcessor( aliasList );
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mMessageFramer.addMessageListener( mMessageProcessor );
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mMessageProcessor.setMessageListener( getMessageListener() );
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}
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public void dispose()
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{
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super.dispose();
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mBandPassFilter.dispose();
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mDecimationFilter.dispose();
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mFSKDecoder.dispose();
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mMessageFramer.dispose();
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mMessageProcessor.dispose();
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super.dispose();
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}
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@Override
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public DecoderType getDecoderType()
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{
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return DecoderType.FLEETSYNC2;
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}
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@Override
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public List<TapGroup> getTapGroups()
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@Override
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public DecoderType getDecoderType()
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{
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if( mAvailableTaps == null )
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{
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mAvailableTaps = new ArrayList<TapGroup>();
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TapGroup group = new TapGroup( "Fleetsync 2 Decoder" );
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group.add( new FloatBufferTap(
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INSTRUMENT_BANDPASS_FILTER_TO_FSK2_DEMOD, 0, 0.5f ) );
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group.add( new BinaryTap(
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INSTRUMENT_FSK2_DECODER_TO_MESSAGE_FRAMER, 0, 0.025f ) );
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mAvailableTaps.add( group );
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mAvailableTaps.addAll( mFSKDecoder.getTapGroups() );
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}
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return mAvailableTaps;
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return DecoderType.FLEETSYNC2;
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}
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@Override
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public void registerTap( Tap tap )
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@Override
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public Listener<ReusableBuffer> getReusableBufferListener()
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{
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mFSKDecoder.registerTap( tap );
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switch( tap.getName() )
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{
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case INSTRUMENT_BANDPASS_FILTER_TO_FSK2_DEMOD:
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FloatBufferTap bpTap = (FloatBufferTap)tap;
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mBandPassFilter.setListener( bpTap );
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bpTap.setListener( mFSKDecoder );
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break;
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case INSTRUMENT_FSK2_DECODER_TO_MESSAGE_FRAMER:
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BinaryTap decoderTap = (BinaryTap)tap;
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mFSKDecoder.setListener( decoderTap );
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decoderTap.setListener( mMessageFramer );
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break;
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}
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return mAFSK1200Decoder;
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}
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@Override
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public void unregisterTap( Tap tap )
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@Override
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public void receive(ReusableBuffer reusableBuffer)
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{
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mFSKDecoder.unregisterTap( tap );
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switch( tap.getName() )
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{
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case INSTRUMENT_BANDPASS_FILTER_TO_FSK2_DEMOD:
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mBandPassFilter.setListener( mFSKDecoder );
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break;
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case INSTRUMENT_FSK2_DECODER_TO_MESSAGE_FRAMER:
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mFSKDecoder.setListener( mMessageFramer );
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break;
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}
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mAFSK1200Decoder.receive(reusableBuffer);
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}
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@Override
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public Listener<RealBuffer> getFilteredRealBufferListener()
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{
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return mDecimationFilter;
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}
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@Override
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public void reset()
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{
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mMessageFramer.reset();
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}
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@Override
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public void setSyncDetectListener(ISyncDetectListener listener)
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{
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mMessageFramer.setSyncDetectListener(listener);
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}
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}
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@@ -0,0 +1,49 @@
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/*******************************************************************************
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* sdr-trunk
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* Copyright (C) 2014-2018 Dennis Sheirer
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*
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* This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
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* later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with this program.
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* If not, see <http://www.gnu.org/licenses/>
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*
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******************************************************************************/
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package io.github.dsheirer.module.decode.fleetsync2;
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import io.github.dsheirer.alias.AliasList;
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import io.github.dsheirer.dsp.fsk.AFSK1200Decoder;
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import io.github.dsheirer.dsp.fsk.AFSK1200DecoderInstrumented;
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import io.github.dsheirer.dsp.fsk.SampleBufferInstrumented;
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import io.github.dsheirer.dsp.fsk.ZeroCrossingErrorDetectorInstrumented;
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import io.github.dsheirer.sample.buffer.ReusableBuffer;
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import javafx.beans.property.SimpleIntegerProperty;
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public class Fleetsync2DecoderInstrumented extends Fleetsync2Decoder
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{
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public SimpleIntegerProperty bufferCount = new SimpleIntegerProperty();
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public Fleetsync2DecoderInstrumented(AliasList aliasList)
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{
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super(new AFSK1200DecoderInstrumented(MESSAGE_LENGTH,
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new SampleBufferInstrumented(AFSK1200Decoder.SAMPLES_PER_SYMBOL, AFSK1200Decoder.COARSE_TIMING_GAIN),
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new ZeroCrossingErrorDetectorInstrumented(AFSK1200Decoder.SAMPLES_PER_SYMBOL), false), aliasList);
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}
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public AFSK1200DecoderInstrumented getAFSK1200Decoder()
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{
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return (AFSK1200DecoderInstrumented)mAFSK1200Decoder;
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}
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@Override
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public void receive(ReusableBuffer reusableBuffer)
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{
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super.receive(reusableBuffer);
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bufferCount.setValue(bufferCount.intValue() + 1);
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}
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}
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