#90 [WIP] Resolves issue with MPT-1327 decoder which has apparently been broken for a long time.

This commit is contained in:
Denny
2017-01-21 11:05:30 -05:00
parent 6b67a74055
commit 26837b8a68
13 changed files with 1499 additions and 1459 deletions

View File

@@ -20,11 +20,15 @@ package channel.metadata;
import channel.state.State;
import module.decode.DecoderType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sample.Broadcaster;
import sample.Listener;
public class MutableMetadata extends Metadata implements Listener<AttributeChangeRequest>
{
private final static Logger mLog = LoggerFactory.getLogger(MutableMetadata.class);
private Broadcaster<MutableMetadataChangeEvent> mMetadataChangeEventBroadcaster = new Broadcaster<>();
/**
@@ -138,7 +142,7 @@ public class MutableMetadata extends Metadata implements Listener<AttributeChang
broadcast(Attribute.SECONDARY_ADDRESS_TO);
break;
case CHANNEL_STATE:
mState = (State)request.getValue();
mState = (State) request.getValue();
broadcast(Attribute.CHANNEL_STATE);
break;
default:

View File

@@ -121,8 +121,6 @@ public class ChannelState extends Module implements ICallEventProvider, IDecoder
{
broadcast(new DecoderStateEvent(this, Event.RESET, State.IDLE));
mMutableMetadata.resetTemporalAttributes();
mState = State.IDLE;
mMutableMetadata.receive(new AttributeChangeRequest<State>(Attribute.CHANNEL_STATE, mState));
}
@@ -475,6 +473,7 @@ public class ChannelState extends Module implements ICallEventProvider, IDecoder
*/
public void configureAsTrafficChannel(TrafficChannelManager manager, CallEvent callEvent)
{
mLog.debug("Configuring for traffic channel: " + callEvent.toCSV());
mTrafficChannelEndListener = manager;
mTrafficChannelCallEvent = callEvent;
@@ -487,30 +486,32 @@ public class ChannelState extends Module implements ICallEventProvider, IDecoder
mMutableMetadata.receive(new AttributeChangeRequest<String>(Attribute.CHANNEL_FREQUENCY_LABEL, channel));
}
long frequency = mTrafficChannelCallEvent.getFrequency();
if(frequency > 0)
{
mMutableMetadata.receive(new AttributeChangeRequest<Long>(Attribute.CHANNEL_FREQUENCY, frequency));
}
mMutableMetadata.receive(new AttributeChangeRequest<DecoderType>(Attribute.PRIMARY_DECODER_TYPE,
mTrafficChannelCallEvent.getDecoderType()));
String details = mTrafficChannelCallEvent.getDetails();
mMutableMetadata.receive(new AttributeChangeRequest<String>(Attribute.CHANNEL_CONFIGURATION_LABEL_1, "TRAFFIC"));
String from = mTrafficChannelCallEvent.getFromID();
if(from != null)
{
mMutableMetadata.receive(new AttributeChangeRequest<String>(Attribute.PRIMARY_ADDRESS_FROM, from));
mMutableMetadata.receive(new AttributeChangeRequest<String>(Attribute.PRIMARY_ADDRESS_FROM, from,
mTrafficChannelCallEvent.getFromIDAlias()));
}
String to = mTrafficChannelCallEvent.getToID();
if(to != null)
{
mMutableMetadata.receive(new AttributeChangeRequest<String>(Attribute.PRIMARY_ADDRESS_TO, to));
}
long frequency = mTrafficChannelCallEvent.getFrequency();
if(frequency > 0)
{
mMutableMetadata.receive(new AttributeChangeRequest<Long>(Attribute.CHANNEL_FREQUENCY, frequency));
mMutableMetadata.receive(new AttributeChangeRequest<String>(Attribute.PRIMARY_ADDRESS_TO, to,
mTrafficChannelCallEvent.getToIDAlias()));
}
/* Rebroadcast the allocation event so that the internal decoder states

View File

@@ -194,8 +194,7 @@ public class ChannelProcessingManager implements ChannelEventListener
if(processingChain == null)
{
processingChain = new ProcessingChain(channel.getName(),
channel.getChannelType());
processingChain = new ProcessingChain(channel.getName(), channel.getChannelType());
/* Register global listeners */
for(Listener<AudioPacket> listener : mAudioPacketListeners)

View File

@@ -1,155 +1,157 @@
package controller.channel.map;
import controller.channel.map.ChannelMapEvent.Event;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sample.Broadcaster;
import sample.Listener;
import javax.swing.*;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.swing.AbstractListModel;
import controller.channel.map.ChannelMapEvent.Event;
import sample.Broadcaster;
import sample.Listener;
public class ChannelMapModel extends AbstractListModel<ChannelMap>
{
private static final long serialVersionUID = 1L;
private List<ChannelMap> mChannelMaps = new ArrayList<>();
private Broadcaster<ChannelMapEvent> mEventBroadcaster = new Broadcaster<>();
private static final long serialVersionUID = 1L;
private final static Logger mLog = LoggerFactory.getLogger(ChannelMapModel.class);
public ChannelMapModel()
{
}
private List<ChannelMap> mChannelMaps = new ArrayList<>();
private Broadcaster<ChannelMapEvent> mEventBroadcaster = new Broadcaster<>();
/**
* Returns an unmodifiable list of channel maps currently in the model
*/
public List<ChannelMap> getChannelMaps()
{
return Collections.unmodifiableList( mChannelMaps );
}
public ChannelMapModel()
{
}
/**
* Returns the channel map with a matching name or null
*/
public ChannelMap getChannelMap( String name )
{
for( ChannelMap channelMap: mChannelMaps )
{
if( channelMap.getName().equalsIgnoreCase( name ) )
{
return channelMap;
}
}
return null;
}
/**
* Returns an unmodifiable list of channel maps currently in the model
*/
public List<ChannelMap> getChannelMaps()
{
return Collections.unmodifiableList(mChannelMaps);
}
/**
* Adds a listener to receive notifications when channel map updates occur
*/
public void addListener( Listener<ChannelMapEvent> listener )
{
mEventBroadcaster.addListener( listener );
}
/**
* Returns the channel map with a matching name or null
*/
public ChannelMap getChannelMap(String name)
{
for(ChannelMap channelMap : mChannelMaps)
{
if(channelMap.getName().equalsIgnoreCase(name))
{
return channelMap;
}
}
/**
* Removes the channel map update notification listener
*/
public void removeListener( Listener<ChannelMapEvent> listener )
{
mEventBroadcaster.removeListener( listener );
}
return null;
}
/**
* Broadcasts a channel map change.
*
* Note: use the add/remove methods to add or remove channel maps from this
* model. When using those methods, an add or delete event will automatically
* be generated.
*/
public void broadcast( ChannelMapEvent event )
{
if( event.getEvent() == ChannelMapEvent.Event.CHANGE ||
event.getEvent() == ChannelMapEvent.Event.RENAME )
{
int index = mChannelMaps.indexOf( event.getChannelMap() );
if( index >= 0 )
{
fireContentsChanged( this, index, index );
}
}
mEventBroadcaster.broadcast( event );
}
/**
* Adds a list of channel maps to this model
*/
public void addChannelMaps( List<ChannelMap> channelMaps )
{
for( ChannelMap channelMap: channelMaps )
{
addChannelMap( channelMap );
}
}
/**
* Adds a listener to receive notifications when channel map updates occur
*/
public void addListener(Listener<ChannelMapEvent> listener)
{
mEventBroadcaster.addListener(listener);
}
/**
* Adds the channel map to this model
*/
public void addChannelMap( ChannelMap channelMap )
{
if( !mChannelMaps.contains( channelMap ) )
{
mChannelMaps.add( channelMap );
int index = mChannelMaps.indexOf( channelMap );
fireIntervalAdded( this, index, index );
broadcast( new ChannelMapEvent( channelMap, Event.ADD ) );
}
}
/**
* Removes the channel map update notification listener
*/
public void removeListener(Listener<ChannelMapEvent> listener)
{
mEventBroadcaster.removeListener(listener);
}
/**
* Removes the channel map from this model
*/
public void removeChannelMap( ChannelMap channelMap )
{
if( mChannelMaps.contains( channelMap ) )
{
int index = mChannelMaps.indexOf( channelMap );
mChannelMaps.remove( channelMap );
fireIntervalRemoved( this, index, index );
/**
* Broadcasts a channel map change.
*
* Note: use the add/remove methods to add or remove channel maps from this
* model. When using those methods, an add or delete event will automatically
* be generated.
*/
public void broadcast(ChannelMapEvent event)
{
if(event.getEvent() == ChannelMapEvent.Event.CHANGE ||
event.getEvent() == ChannelMapEvent.Event.RENAME)
{
int index = mChannelMaps.indexOf(event.getChannelMap());
broadcast( new ChannelMapEvent( channelMap, Event.DELETE ) );
}
}
if(index >= 0)
{
fireContentsChanged(this, index, index);
}
}
/**
* Size/Number of channel maps in this model
*/
@Override
public int getSize()
{
return mChannelMaps.size();
}
mEventBroadcaster.broadcast(event);
}
/**
* Returns the channel map at the specified index
*/
@Override
public ChannelMap getElementAt( int index )
{
if( index <= mChannelMaps.size() )
{
return mChannelMaps.get( index );
}
return null;
}
/**
* Adds a list of channel maps to this model
*/
public void addChannelMaps(List<ChannelMap> channelMaps)
{
for(ChannelMap channelMap : channelMaps)
{
addChannelMap(channelMap);
}
}
/**
* Adds the channel map to this model
*/
public void addChannelMap(ChannelMap channelMap)
{
if(!mChannelMaps.contains(channelMap))
{
mChannelMaps.add(channelMap);
int index = mChannelMaps.indexOf(channelMap);
fireIntervalAdded(this, index, index);
broadcast(new ChannelMapEvent(channelMap, Event.ADD));
}
}
/**
* Removes the channel map from this model
*/
public void removeChannelMap(ChannelMap channelMap)
{
if(mChannelMaps.contains(channelMap))
{
int index = mChannelMaps.indexOf(channelMap);
mChannelMaps.remove(channelMap);
fireIntervalRemoved(this, index, index);
broadcast(new ChannelMapEvent(channelMap, Event.DELETE));
}
}
/**
* Size/Number of channel maps in this model
*/
@Override
public int getSize()
{
return mChannelMaps.size();
}
/**
* Returns the channel map at the specified index
*/
@Override
public ChannelMap getElementAt(int index)
{
if(index <= mChannelMaps.size())
{
return mChannelMaps.get(index);
}
return null;
}
}

File diff suppressed because it is too large Load Diff

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@@ -51,25 +51,25 @@ public class FilterViewer extends Application
// .stopBandRipple( 0.027 )
// .build();
FIRFilterSpecification specification = FIRFilterSpecification.highPassBuilder()
.sampleRate( 8000 )
.stopBandCutoff( 250 )
.stopBandAmplitude( 0.0 )
.stopBandRipple( 0.01 )
.passBandStart( 300 )
.passBandAmplitude( 1.0 )
.passBandRipple( 0.01 )
.build();
// FIRFilterSpecification specification = FIRFilterSpecification.highPassBuilder()
// .sampleRate( 8000 )
// .stopBandCutoff( 250 )
// .stopBandAmplitude( 0.0 )
// .stopBandRipple( 0.01 )
// .passBandStart( 300 )
// .passBandAmplitude( 1.0 )
// .passBandRipple( 0.01 )
// .build();
// FIRFilterSpecification specification = FIRFilterSpecification.bandPassBuilder()
// .sampleRate( 48000 )
// .stopFrequency1( 150 )
// .passFrequencyBegin( 200 )
// .passFrequencyEnd( 3950 )
// .stopFrequency2( 4000 )
// .stopRipple( 0.0005 )
// .passRipple( 0.003)
// .build();
FIRFilterSpecification specification = FIRFilterSpecification.bandPassBuilder()
.sampleRate( 48000 )
.stopFrequency1( 200 )
.passFrequencyBegin( 400 )
.passFrequencyEnd( 3200 )
.stopFrequency2( 3400 )
.stopRipple( 0.0003 )
.passRipple( 0.008)
.build();
float[] taps = null;

View File

@@ -1,296 +1,302 @@
/*******************************************************************************
* SDR Trunk
* Copyright (C) 2014 Dennis Sheirer
*
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
******************************************************************************/
package dsp.fsk;
import buffer.BooleanAveragingBuffer;
import dsp.symbol.SymbolEvent;
import dsp.symbol.SymbolEvent.Shift;
import instrument.Instrumentable;
import instrument.tap.Tap;
import instrument.tap.TapGroup;
import instrument.tap.stream.SymbolEventTap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sample.Listener;
import sample.real.RealBuffer;
import java.util.ArrayList;
import java.util.BitSet;
import java.util.List;
import sample.Listener;
import sample.real.RealBuffer;
import buffer.BooleanAveragingBuffer;
import dsp.symbol.SymbolEvent;
import dsp.symbol.SymbolEvent.Shift;
/**
* Binary Frequency Shift Keying (FSK) decoder. Implements a BFSK correlation
* decoder. Provides normal or inverted decoded output. Requires the symbol
* rate to be an integer multiple of the sample rate.
*
* Implements a correlation decoder that correlates a modulated FSK signal upon
* against a one-baud delayed version of itself, converting all float samples to
* binary (0 or 1), and uses XOR to produce the correlation value. Low pass
*
* Implements a correlation decoder that correlates a modulated FSK signal upon
* against a one-baud delayed version of itself, converting all float samples to
* binary (0 or 1), and uses XOR to produce the correlation value. Low pass
* filtering smoothes the correlated output.
*
*
* Automatically aligns to symbol timing during symbol transitions (0 to 1, or
* 1 to 0) by inspecting the samples at the symbol edges and advancing or
* 1 to 0) by inspecting the samples at the symbol edges and advancing or
* retarding symbol window to maintain continuous symbol alignment.
*
*
* Use a DC-removal filter prior to this decoder to ensure samples don't have
* a DC component.
*
*
* Implements instrumentable interface, so that slice events can be received
* externally to analyze decoder performance.
*/
public class FSK2Decoder implements Instrumentable, Listener<RealBuffer>
{
public enum Output{ NORMAL, INVERTED };
private final static Logger mLog = LoggerFactory.getLogger(FSK2Decoder.class);
/* Instrumentation taps */
private static final String INSTRUMENT_DECISION =
"Tap Point: FSK2 Symbol Decision";
private List<TapGroup> mAvailableTaps;
private ArrayList<SymbolEventTap> mTaps = new ArrayList<SymbolEventTap>();
private Listener<Boolean> mListener;
private BooleanAveragingBuffer mDelayBuffer;
private BooleanAveragingBuffer mLowPassFilter;
private Slicer mSlicer;
private boolean mNormalOutput;
private int mSamplesPerSymbol;
private int mSymbolRate;
public FSK2Decoder( int sampleRate, int symbolRate, Output output )
{
/* Ensure we're using an integral symbolRate of the sampleRate */
assert( sampleRate % symbolRate == 0 );
mSamplesPerSymbol = (int)( sampleRate / symbolRate );
mNormalOutput = ( output == Output.NORMAL );
mSymbolRate = symbolRate;
mDelayBuffer = new BooleanAveragingBuffer( mSamplesPerSymbol );
mLowPassFilter = new BooleanAveragingBuffer( mSamplesPerSymbol );
mSlicer = new Slicer( mSamplesPerSymbol );
}
/**
* Disposes of all references to prepare for garbage collection
*/
public void dispose()
{
mListener = null;
}
public enum Output
{
NORMAL, INVERTED
}
/**
* Primary sample input
*/
@Override
public void receive( RealBuffer buffer )
{
for( float sample: buffer.getSamples() )
{
/* Instrumentation taps */
private static final String INSTRUMENT_DECISION =
"Tap Point: FSK2 Symbol Decision";
private List<TapGroup> mAvailableTaps;
private ArrayList<SymbolEventTap> mTaps = new ArrayList<SymbolEventTap>();
private Listener<Boolean> mListener;
private BooleanAveragingBuffer mDelayBuffer;
private BooleanAveragingBuffer mLowPassFilter;
private Slicer mSlicer;
private boolean mNormalOutput;
private int mSamplesPerSymbol;
private int mSymbolRate;
public FSK2Decoder(int sampleRate, int symbolRate, Output output)
{
/* Ensure we're using an integral symbolRate of the sampleRate */
assert (sampleRate % symbolRate == 0);
mSamplesPerSymbol = (int) (sampleRate / symbolRate);
mNormalOutput = (output == Output.NORMAL);
mSymbolRate = symbolRate;
mDelayBuffer = new BooleanAveragingBuffer(mSamplesPerSymbol);
mLowPassFilter = new BooleanAveragingBuffer(mSamplesPerSymbol);
mSlicer = new Slicer(mSamplesPerSymbol);
}
/**
* Disposes of all references to prepare for garbage collection
*/
public void dispose()
{
mListener = null;
}
/**
* Primary sample input
*/
@Override
public void receive(RealBuffer buffer)
{
for(float sample : buffer.getSamples())
{
/* Square the sample. Greater than zero is a 1 (true) and less than
* zero is a 0 (false) */
boolean bitSample = ( sample >= 0.0f );
boolean bitSample = (sample >= 0.0f);
/* Feed the delay buffer and fetch the one-baud delayed sample */
boolean delayedBitSample = mDelayBuffer.get( bitSample );
boolean delayedBitSample = mDelayBuffer.get(bitSample);
/* Correlation: xor current bit with delayed bit */
boolean softBit = bitSample ^ delayedBitSample;
boolean softBit = bitSample ^ delayedBitSample;
/* Low pass filter to smooth the correlated values */
boolean filteredSoftBit = mLowPassFilter.getAverage( softBit );
boolean filteredSoftBit = mLowPassFilter.getAverage(softBit);
/* Send the filtered correlated bit to the slicer */
mSlicer.receive( filteredSoftBit );
}
}
mSlicer.receive(filteredSoftBit);
}
}
/**
* Registers a listener to receive the decoded FSK bits
*/
public void setListener( Listener<Boolean> listener )
{
mListener = listener;
}
/**
* Registers a listener to receive the decoded FSK bits
*/
public void setListener(Listener<Boolean> listener)
{
mListener = listener;
}
/**
* Removes the listener
*/
public void removeListener( Listener<Boolean> listener )
{
mListener = null;
}
/**
* Removes the listener
*/
public void removeListener(Listener<Boolean> listener)
{
mListener = null;
}
/**
* Symbol slicer with auto-aligning baud timing
*/
public class Slicer
{
private BitSet mBitSet = new BitSet();
private int mSymbolLength;
private int mDecisionThreshold;
private int mSampleCounter;
public Slicer( int samplesPerSymbol )
{
mSymbolLength = samplesPerSymbol;
mDecisionThreshold = (int)( mSymbolLength / 2 );
/**
* Symbol slicer with auto-aligning baud timing
*/
public class Slicer
{
private BitSet mBitSet = new BitSet();
private int mSymbolLength;
private int mDecisionThreshold;
private int mSampleCounter;
public Slicer(int samplesPerSymbol)
{
mSymbolLength = samplesPerSymbol;
mDecisionThreshold = (int) (mSymbolLength / 2);
/* Adjust for an odd number of samples per baud */
if( mSymbolLength % 2 == 1 )
{
mDecisionThreshold++;
}
}
public void receive( boolean softBit )
{
if( mSampleCounter >= 0 )
{
if( softBit )
{
mBitSet.set( mSampleCounter );
}
else
{
mBitSet.clear( mSampleCounter );
}
}
mSampleCounter++;
if( mSampleCounter >= mSymbolLength )
{
boolean decision = mBitSet.cardinality() >= mDecisionThreshold;
send( decision );
if(mSymbolLength % 2 == 1)
{
mDecisionThreshold++;
}
}
public void receive(boolean softBit)
{
if(mSampleCounter >= 0)
{
if(softBit)
{
mBitSet.set(mSampleCounter);
}
else
{
mBitSet.clear(mSampleCounter);
}
}
mSampleCounter++;
if(mSampleCounter >= mSymbolLength)
{
boolean decision = mBitSet.cardinality() >= mDecisionThreshold;
send(decision);
/* Shift timing left if the left bit in the bitset is opposite
* the decision and the right bit is the same */
if( ( mBitSet.get( 0 ) ^ decision ) &&
( !( mBitSet.get( mSymbolLength - 1 ) ^ decision ) ) )
{
sendTapEvent( mBitSet, Shift.LEFT, decision );
reset();
mSampleCounter--;
}
if((mBitSet.get(0) ^ decision) &&
(!(mBitSet.get(mSymbolLength - 1) ^ decision)))
{
sendTapEvent(mBitSet, Shift.LEFT, decision);
reset();
mSampleCounter--;
}
/* Shift timing right if the left bit is the same as the
* decision and the right bit is opposite */
else if( ( !( mBitSet.get( 0 ) ^ decision ) ) &&
( mBitSet.get( mSymbolLength - 1 ) ^ decision ) )
{
sendTapEvent( mBitSet, Shift.RIGHT, decision );
else if((!(mBitSet.get(0) ^ decision)) &&
(mBitSet.get(mSymbolLength - 1) ^ decision))
{
sendTapEvent(mBitSet, Shift.RIGHT, decision);
/* Last bit from previous symbol to pre-fill next symbol */
boolean previousSoftBit = mBitSet.get( mSymbolLength - 1 );
reset();
if( previousSoftBit )
{
mBitSet.set( 0 );
}
mSampleCounter++;
}
boolean previousSoftBit = mBitSet.get(mSymbolLength - 1);
reset();
if(previousSoftBit)
{
mBitSet.set(0);
}
mSampleCounter++;
}
/* No shift */
else
{
sendTapEvent( mBitSet, Shift.NONE, decision );
reset();
}
}
}
/**
* Sends the bit decision to the listener
*/
private void send( boolean decision )
{
if( mListener != null )
{
mListener.receive( mNormalOutput ? decision : !decision );
}
}
private void reset()
{
mBitSet.clear();
mSampleCounter = 0;
}
else
{
sendTapEvent(mBitSet, Shift.NONE, decision);
/**
* Sends instrumentation tap event to all registered listeners
*/
private void sendTapEvent( BitSet bitset, Shift shift, boolean decision )
{
for( SymbolEventTap tap: mTaps )
{
SymbolEvent event =
new SymbolEvent( bitset.get( 0, mSymbolLength ),
mSymbolLength,
decision,
shift );
tap.receive( event );
}
}
}
reset();
}
}
}
/**
* Get instrumentation taps
*/
@Override
/**
* Sends the bit decision to the listener
*/
private void send(boolean decision)
{
if(mListener != null)
{
mListener.receive(mNormalOutput ? decision : !decision);
}
}
private void reset()
{
mBitSet.clear();
mSampleCounter = 0;
}
/**
* Sends instrumentation tap event to all registered listeners
*/
private void sendTapEvent(BitSet bitset, Shift shift, boolean decision)
{
for(SymbolEventTap tap : mTaps)
{
SymbolEvent event =
new SymbolEvent(bitset.get(0, mSymbolLength),
mSymbolLength,
decision,
shift);
tap.receive(event);
}
}
}
/**
* Get instrumentation taps
*/
@Override
public List<TapGroup> getTapGroups()
{
if( mAvailableTaps == null )
{
mAvailableTaps = new ArrayList<TapGroup>();
TapGroup tapGroup = new TapGroup( "FSK2 Decoder" );
tapGroup.add( new SymbolEventTap( INSTRUMENT_DECISION, 0, .025f ) );
mAvailableTaps.add( tapGroup );
}
return mAvailableTaps;
if(mAvailableTaps == null)
{
mAvailableTaps = new ArrayList<TapGroup>();
TapGroup tapGroup = new TapGroup("FSK2 Decoder");
tapGroup.add(new SymbolEventTap(INSTRUMENT_DECISION, 0, .025f));
mAvailableTaps.add(tapGroup);
}
return mAvailableTaps;
}
/**
* Add instrumentation tap
*/
@Override
public void registerTap( Tap tap )
/**
* Add instrumentation tap
*/
@Override
public void registerTap(Tap tap)
{
if( tap instanceof SymbolEventTap && !mTaps.contains( tap ) )
{
mTaps.add( (SymbolEventTap)tap );
}
if(tap instanceof SymbolEventTap && !mTaps.contains(tap))
{
mTaps.add((SymbolEventTap) tap);
}
}
/**
* Remove instrumentation tap
*/
@Override
public void unregisterTap( Tap tap )
/**
* Remove instrumentation tap
*/
@Override
public void unregisterTap(Tap tap)
{
mTaps.remove( tap );
mTaps.remove(tap);
}
}

View File

@@ -386,7 +386,7 @@ public class SDRTrunk implements Listener<TunerEvent>
if(mBroadcastStatusPanel == null)
{
mBroadcastStatusPanel = new BroadcastStatusPanel(mBroadcastModel);
mBroadcastStatusPanel.setPreferredSize(new Dimension(880, 100));
mBroadcastStatusPanel.setPreferredSize(new Dimension(880, 70));
mBroadcastStatusPanel.getTable().setEnabled(false);
}

View File

@@ -30,6 +30,8 @@ import controller.channel.ChannelModel;
import controller.channel.ChannelProcessingManager;
import controller.channel.map.ChannelMap;
import controller.channel.map.ChannelMapModel;
import dsp.filter.FilterFactory;
import dsp.filter.fir.FIRFilterSpecification;
import filter.AllPassFilter;
import filter.FilterSet;
import filter.IFilter;
@@ -89,12 +91,34 @@ import module.decode.tait.Tait1200DecoderState;
import module.demodulate.am.AMDemodulatorModule;
import module.demodulate.audio.DemodulatedAudioFilterModule;
import module.demodulate.fm.FMDemodulatorModule;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.ArrayList;
import java.util.List;
public class DecoderFactory
{
private final static Logger mLog = LoggerFactory.getLogger(DecoderFactory.class);
private static final FIRFilterSpecification MPT1327_FILTER_SPECIFICATION = FIRFilterSpecification.bandPassBuilder()
.sampleRate(48000).stopFrequency1(200).passFrequencyBegin(400).passFrequencyEnd(3200)
.stopFrequency2(3400).stopRipple(0.0003).passRipple(0.008).build();
private static float[] MPT1327_BANDPASS_FILTER;
static
{
try
{
MPT1327_BANDPASS_FILTER = FilterFactory.getTaps(MPT1327_FILTER_SPECIFICATION);
}
catch(Exception e)
{
mLog.error("Couldn't design MPT1327 bandpass filter");
}
}
public static final boolean NO_REMOVE_DC = false;
public static final boolean REMOVE_DC = true;
@@ -197,7 +221,7 @@ public class DecoderFactory
}
modules.add(new FMDemodulatorModule(iqPass, iqStop));
modules.add(new DemodulatedAudioFilterModule(4000, 6000));
modules.add(new DemodulatedAudioFilterModule(MPT1327_BANDPASS_FILTER, 2.0f));
modules.add(new AudioModule(metadata));
break;
case PASSPORT:

View File

@@ -1,322 +1,290 @@
/*******************************************************************************
* SDR Trunk
* Copyright (C) 2014 Dennis Sheirer
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
* sdrtrunk
* Copyright (C) 2014-2017 Dennis Sheirer
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
******************************************************************************/
package module.decode.mpt1327;
import alias.AliasList;
import bits.MessageFramer;
import bits.SyncPattern;
import dsp.filter.Filters;
import dsp.filter.dc.DCRemovalFilterLyons;
import dsp.filter.fir.real.RealFIRFilter_RB_RB;
import dsp.filter.halfband.real.HalfBandFilter_RB_RB;
import dsp.fsk.FSK2Decoder;
import dsp.fsk.FSK2Decoder.Output;
import instrument.Instrumentable;
import instrument.tap.Tap;
import instrument.tap.TapGroup;
import instrument.tap.stream.BinaryTap;
import instrument.tap.stream.FloatBufferTap;
import instrument.tap.stream.FloatTap;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ScheduledExecutorService;
import module.decode.Decoder;
import module.decode.DecoderType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sample.Broadcaster;
import sample.Listener;
import sample.real.IFilteredRealBufferListener;
import sample.real.RealBuffer;
import alias.AliasList;
import bits.MessageFramer;
import bits.SyncPattern;
import dsp.filter.FilterFactory;
import dsp.filter.Filters;
import dsp.filter.Window.WindowType;
import dsp.filter.dc.DCRemovalFilterLyons;
import dsp.filter.fir.real.RealFIRFilter_RB_RB;
import dsp.filter.halfband.real.HalfBandFilter_RB_RB;
import dsp.fsk.FSK2Decoder;
import dsp.fsk.FSK2Decoder.Output;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ScheduledExecutorService;
/**
* MPT1327 Decoder - 1200 baud 2FSK decoder that can process 48k sample rate
* complex or floating point samples and output fully framed MPT1327 control and
* traffic messages.
*/
public class MPT1327Decoder extends Decoder
implements IFilteredRealBufferListener, Instrumentable
public class MPT1327Decoder extends Decoder implements IFilteredRealBufferListener, Instrumentable
{
private final static Logger mLog = LoggerFactory.getLogger( MPT1327Decoder.class );
/* Decimated sample rate ( 48,000 / 2 = 24,000 ) feeding the decoder */
private static final int sDECIMATED_SAMPLE_RATE = 24000;
/* Baud or Symbol Rate */
private static final int sSYMBOL_RATE = 1200;
private final static Logger mLog = LoggerFactory.getLogger(MPT1327Decoder.class);
/* Message length -- longest possible message is:
* 4xREVS + 16xSYNC + 64xADD1 + 64xDCW1 + 64xDCW2 + 64xDCW3 + 64xDCW4 */
/* Decimated sample rate ( 48,000 / 2 = 24,000 ) feeding the decoder */
private static final int sDECIMATED_SAMPLE_RATE = 24000;
/* Baud or Symbol Rate */
private static final int sSYMBOL_RATE = 1200;
/* Message length -- longest possible message is:
* 4xREVS + 16xSYNC + 64xADD1 + 64xDCW1 + 64xDCW2 + 64xDCW3 + 64xDCW4 */
private static final int sMESSAGE_LENGTH = 350;
/* Instrumentation Taps */
private static final String INSTRUMENT_HB1_FILTER_TO_LOW_PASS =
"Tap Point: Half-band Decimation Filter > < Low Pass Filter";
private static final String INSTRUMENT_LOW_PASS_TO_DECODER =
"Tap Point: Low Pass Filter > < Decoder";
private static final String INSTRUMENT_DECODER_TO_FRAMER =
"Tap Point: Decoder > < Sync Detect/Message Framer";
private static final String INSTRUMENT_HB1_FILTER_TO_LOW_PASS =
"Tap Point: Half-band Decimation Filter > < Low Pass Filter";
private static final String INSTRUMENT_LOW_PASS_TO_DECODER =
"Tap Point: Low Pass Filter > < Decoder";
private static final String INSTRUMENT_DECODER_TO_FRAMER =
"Tap Point: Decoder > < Sync Detect/Message Framer";
private List<TapGroup> mAvailableTaps;
private HalfBandFilter_RB_RB mDecimationFilter;
private RealFIRFilter_RB_RB mLowPassFilter;
private DCRemovalFilterLyons mDCRemovalFilter;
private FSK2Decoder mFSKDecoder;
private Broadcaster<Boolean> mSymbolBroadcaster;
private HalfBandFilter_RB_RB mDecimationFilter;
private RealFIRFilter_RB_RB mLowPassFilter;
private DCRemovalFilterLyons mDCRemovalFilter;
private FSK2Decoder mFSKDecoder;
private Broadcaster<Boolean> mSymbolBroadcaster;
private MessageFramer mControlMessageFramer;
private MessageFramer mTrafficMessageFramer;
private MPT1327MessageProcessor mMessageProcessor;
public MPT1327Decoder( AliasList aliasList, Sync sync )
{
public MPT1327Decoder(AliasList aliasList, Sync sync)
{
/* Decimation filter - 48000 / 2 = 24000 output */
mDecimationFilter = new HalfBandFilter_RB_RB(Filters.FIR_HALF_BAND_31T_ONE_EIGHTH_FCO.getCoefficients(), 1.0002f, true);
/* Decimation filter - 48000 / 2 = 24000 output */
mDecimationFilter = new HalfBandFilter_RB_RB(
Filters.FIR_HALF_BAND_31T_ONE_EIGHTH_FCO.getCoefficients(), 1.0002f, true );
/* Low pass filter: 2kHz to pass the 1200 & 1800 Hz FSK */
mLowPassFilter = new RealFIRFilter_RB_RB(
FilterFactory.getLowPass( 24000, //sampleRate,
2000, //passFrequency,
4000, //stopFrequency,
60, //attenuation,
WindowType.HANNING, //windowType,
true ) //forceOddLength
, 2.0f ); //Gain
mDecimationFilter.setListener( mLowPassFilter );
/**
* Normal: 2FSK Decoder with inverted output
* French: 2FSK Decoder with normal output
*/
if(sync == Sync.NORMAL)
{
mFSKDecoder = new FSK2Decoder(24000, 1200, Output.INVERTED);
}
else if(sync == Sync.FRENCH)
{
mFSKDecoder = new FSK2Decoder(24000, 1200, Output.NORMAL);
}
else
{
throw new IllegalArgumentException("MPT1327 Decoder - unrecognized Sync type");
}
/**
* Normal: 2FSK Decoder with inverted output
* French: 2FSK Decoder with normal output
*/
if( sync == Sync.NORMAL )
{
mFSKDecoder = new FSK2Decoder( 24000, 1200, Output.INVERTED );
}
else if( sync == Sync.FRENCH )
{
mFSKDecoder = new FSK2Decoder( 24000, 1200, Output.NORMAL );
}
else
{
throw new IllegalArgumentException( "MPT1327 Decoder - unrecognized Sync type" );
}
mLowPassFilter.setListener( mFSKDecoder );
mSymbolBroadcaster = new Broadcaster<Boolean>();
mFSKDecoder.setListener( mSymbolBroadcaster );
mDecimationFilter.setListener(mFSKDecoder);
mSymbolBroadcaster = new Broadcaster<Boolean>();
mFSKDecoder.setListener(mSymbolBroadcaster);
/* Message framer for control channel messages */
mControlMessageFramer =
new MessageFramer( sync.getControlSyncPattern().getPattern(),
sMESSAGE_LENGTH );
mSymbolBroadcaster.addListener( mControlMessageFramer );
mControlMessageFramer = new MessageFramer(sync.getControlSyncPattern().getPattern(), sMESSAGE_LENGTH);
mSymbolBroadcaster.addListener(mControlMessageFramer);
/* Message framer for traffic channel massages */
mTrafficMessageFramer =
new MessageFramer( sync.getTrafficSyncPattern().getPattern(),
sMESSAGE_LENGTH );
mSymbolBroadcaster.addListener( mTrafficMessageFramer );
mTrafficMessageFramer = new MessageFramer(sync.getTrafficSyncPattern().getPattern(), sMESSAGE_LENGTH);
mSymbolBroadcaster.addListener(mTrafficMessageFramer);
/* Fully decoded and framed messages processor */
mMessageProcessor = new MPT1327MessageProcessor( aliasList );
mMessageProcessor.setMessageListener( this );
mControlMessageFramer.addMessageListener( mMessageProcessor );
mTrafficMessageFramer.addMessageListener( mMessageProcessor );
}
@Override
public Listener<RealBuffer> getFilteredRealBufferListener()
{
return mDecimationFilter;
}
mMessageProcessor = new MPT1327MessageProcessor(aliasList);
mMessageProcessor.setMessageListener(this);
mControlMessageFramer.addMessageListener(mMessageProcessor);
mTrafficMessageFramer.addMessageListener(mMessageProcessor);
}
@Override
public DecoderType getDecoderType()
{
return DecoderType.MPT1327;
}
/**
* Cleanup method
*/
public void dispose()
{
super.dispose();
@Override
public Listener<RealBuffer> getFilteredRealBufferListener()
{
return mDecimationFilter;
}
mSymbolBroadcaster.dispose();
mControlMessageFramer.dispose();
@Override
public DecoderType getDecoderType()
{
return DecoderType.MPT1327;
}
if( mDCRemovalFilter != null )
{
mDCRemovalFilter.dispose();
}
/**
* Cleanup method
*/
public void dispose()
{
super.dispose();
mFSKDecoder.dispose();
mSymbolBroadcaster.dispose();
mDecimationFilter.dispose();
mControlMessageFramer.dispose();
mLowPassFilter.dispose();
mMessageProcessor.dispose();
if(mDCRemovalFilter != null)
{
mDCRemovalFilter.dispose();
}
mTrafficMessageFramer.dispose();
}
mFSKDecoder.dispose();
/* Instrumentation Taps */
@Override
mDecimationFilter.dispose();
mLowPassFilter.dispose();
mMessageProcessor.dispose();
mTrafficMessageFramer.dispose();
}
/* Instrumentation Taps */
@Override
public List<TapGroup> getTapGroups()
{
if( mAvailableTaps == null )
{
mAvailableTaps = new ArrayList<TapGroup>();
if(mAvailableTaps == null)
{
mAvailableTaps = new ArrayList<TapGroup>();
TapGroup group = new TapGroup( "MPT-1327 Decoder" );
group.add(
new FloatTap( INSTRUMENT_HB1_FILTER_TO_LOW_PASS, 0, 0.5f ) );
group.add(
new FloatTap( INSTRUMENT_LOW_PASS_TO_DECODER, 0, 0.5f ) );
group.add(
new BinaryTap( INSTRUMENT_DECODER_TO_FRAMER, 0, 0.025f ) );
TapGroup group = new TapGroup("MPT-1327 Decoder");
mAvailableTaps.add( group );
group.add(new FloatTap(INSTRUMENT_HB1_FILTER_TO_LOW_PASS, 0, 0.5f));
group.add(new FloatTap(INSTRUMENT_LOW_PASS_TO_DECODER, 0, 0.5f));
group.add(new BinaryTap(INSTRUMENT_DECODER_TO_FRAMER, 0, 0.025f));
mAvailableTaps.add(group);
/* Add the taps from the FSK decoder */
mAvailableTaps.addAll( mFSKDecoder.getTapGroups() );
}
return mAvailableTaps;
mAvailableTaps.addAll(mFSKDecoder.getTapGroups());
}
return mAvailableTaps;
}
@Override
public void registerTap( Tap tap )
@Override
public void registerTap(Tap tap)
{
/* Send request to decoder */
mFSKDecoder.registerTap( tap );
switch( tap.getName() )
{
case INSTRUMENT_HB1_FILTER_TO_LOW_PASS:
FloatBufferTap hb1Tap = (FloatBufferTap)tap;
mDecimationFilter.setListener( hb1Tap );
hb1Tap.setListener( mLowPassFilter );
break;
case INSTRUMENT_LOW_PASS_TO_DECODER:
FloatBufferTap lowTap = (FloatBufferTap)tap;
mLowPassFilter.setListener( lowTap );
lowTap.setListener( mFSKDecoder );
break;
case INSTRUMENT_DECODER_TO_FRAMER:
BinaryTap decoderTap = (BinaryTap)tap;
mFSKDecoder.setListener( decoderTap );
decoderTap.setListener( mSymbolBroadcaster );
break;
}
/* Send request to decoder */
mFSKDecoder.registerTap(tap);
switch(tap.getName())
{
case INSTRUMENT_HB1_FILTER_TO_LOW_PASS:
FloatBufferTap hb1Tap = (FloatBufferTap) tap;
mDecimationFilter.setListener(hb1Tap);
hb1Tap.setListener(mLowPassFilter);
break;
case INSTRUMENT_LOW_PASS_TO_DECODER:
FloatBufferTap lowTap = (FloatBufferTap) tap;
mLowPassFilter.setListener(lowTap);
lowTap.setListener(mFSKDecoder);
break;
case INSTRUMENT_DECODER_TO_FRAMER:
BinaryTap decoderTap = (BinaryTap) tap;
mFSKDecoder.setListener(decoderTap);
decoderTap.setListener(mSymbolBroadcaster);
break;
}
}
@Override
public void unregisterTap( Tap tap )
@Override
public void unregisterTap(Tap tap)
{
mFSKDecoder.unregisterTap( tap );
switch( tap.getName() )
{
case INSTRUMENT_HB1_FILTER_TO_LOW_PASS:
mDecimationFilter.setListener( mLowPassFilter );
break;
case INSTRUMENT_LOW_PASS_TO_DECODER:
mLowPassFilter.setListener( mFSKDecoder );
break;
case INSTRUMENT_DECODER_TO_FRAMER:
mFSKDecoder.setListener( mSymbolBroadcaster );
break;
}
mFSKDecoder.unregisterTap(tap);
switch(tap.getName())
{
case INSTRUMENT_HB1_FILTER_TO_LOW_PASS:
mDecimationFilter.setListener(mLowPassFilter);
break;
case INSTRUMENT_LOW_PASS_TO_DECODER:
mLowPassFilter.setListener(mFSKDecoder);
break;
case INSTRUMENT_DECODER_TO_FRAMER:
mFSKDecoder.setListener(mSymbolBroadcaster);
break;
}
}
public enum Sync
{
NORMAL( "Normal",
SyncPattern.MPT1327_CONTROL,
SyncPattern.MPT1327_TRAFFIC ),
FRENCH( "French",
SyncPattern.MPT1327_CONTROL_FRENCH,
SyncPattern.MPT1327_TRAFFIC_FRENCH );
private String mLabel;
private SyncPattern mControlSyncPattern;
private SyncPattern mTrafficSyncPattern;
public enum Sync
{
NORMAL("Normal", SyncPattern.MPT1327_CONTROL, SyncPattern.MPT1327_TRAFFIC),
FRENCH("French", SyncPattern.MPT1327_CONTROL_FRENCH, SyncPattern.MPT1327_TRAFFIC_FRENCH);
private Sync( String label,
SyncPattern controlPattern,
SyncPattern trafficPattern )
{
mLabel = label;
mControlSyncPattern = controlPattern;
mTrafficSyncPattern = trafficPattern;
}
public String getLabel()
{
return mLabel;
}
public SyncPattern getControlSyncPattern()
{
return mControlSyncPattern;
}
public SyncPattern getTrafficSyncPattern()
{
return mTrafficSyncPattern;
}
public String toString()
{
return getLabel();
}
}
private String mLabel;
private SyncPattern mControlSyncPattern;
private SyncPattern mTrafficSyncPattern;
@Override
public void reset()
{
mControlMessageFramer.reset();
mTrafficMessageFramer.reset();
}
private Sync(String label, SyncPattern controlPattern, SyncPattern trafficPattern)
{
mLabel = label;
mControlSyncPattern = controlPattern;
mTrafficSyncPattern = trafficPattern;
}
@Override
public void start( ScheduledExecutorService executor )
{
// TODO Auto-generated method stub
}
public String getLabel()
{
return mLabel;
}
@Override
public void stop()
{
// TODO Auto-generated method stub
}
public SyncPattern getControlSyncPattern()
{
return mControlSyncPattern;
}
public SyncPattern getTrafficSyncPattern()
{
return mTrafficSyncPattern;
}
public String toString()
{
return getLabel();
}
}
@Override
public void reset()
{
mControlMessageFramer.reset();
mTrafficMessageFramer.reset();
}
@Override
public void start(ScheduledExecutorService executor)
{
// TODO Auto-generated method stub
}
@Override
public void stop()
{
// TODO Auto-generated method stub
}
}

View File

@@ -1,102 +1,118 @@
/*******************************************************************************
* SDR Trunk
* Copyright (C) 2014-2016 Dennis Sheirer
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
* sdrtrunk
* Copyright (C) 2014-2017 Dennis Sheirer
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
******************************************************************************/
package module.demodulate.audio;
import java.util.concurrent.ScheduledExecutorService;
import module.Module;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sample.Listener;
import sample.real.IFilteredRealBufferProvider;
import sample.real.IUnFilteredRealBufferListener;
import sample.real.RealBuffer;
import dsp.filter.FilterFactory;
import dsp.filter.Window.WindowType;
import dsp.filter.dc.DCRemovalFilter_RealBuffer;
import dsp.filter.fir.real.RealFIRFilter_RB_RB;
import module.Module;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sample.Listener;
import sample.real.IFilteredRealBufferProvider;
import sample.real.IUnFilteredRealBufferListener;
import sample.real.RealBuffer;
public class DemodulatedAudioFilterModule extends Module
implements IUnFilteredRealBufferListener, IFilteredRealBufferProvider
import java.util.concurrent.ScheduledExecutorService;
public class DemodulatedAudioFilterModule extends Module implements IUnFilteredRealBufferListener, IFilteredRealBufferProvider
{
private final static Logger mLog = LoggerFactory.getLogger( DemodulatedAudioFilterModule.class );
private final static Logger mLog = LoggerFactory.getLogger(DemodulatedAudioFilterModule.class);
private DCRemovalFilter_RealBuffer mDCFilter = new DCRemovalFilter_RealBuffer();
private RealFIRFilter_RB_RB mBandPassFilter;
/**
* Filters demodulated audio and removes any DC component from the buffer
*
* @param pass - audio pass band pass frequency
* @param stop - audio pass band stop frequency
*/
public DemodulatedAudioFilterModule( int pass, int stop )
{
assert( stop > pass );
//TODO: change this to a band pass filter
mBandPassFilter = new RealFIRFilter_RB_RB( FilterFactory.getLowPass( 48000, pass, stop, 60,
WindowType.HANNING, true ), 1.0f );
mDCFilter.setListener( mBandPassFilter );
}
private DCRemovalFilter_RealBuffer mDCFilter;
private RealFIRFilter_RB_RB mBandPassFilter;
@Override
public void dispose()
{
mBandPassFilter.dispose();
mBandPassFilter = null;
mDCFilter.dispose();
mDCFilter = null;
}
/**
* Filters demodulated audio and removes any DC component from the buffer
*
* @param pass - audio pass band pass frequency
* @param stop - audio pass band stop frequency
*/
public DemodulatedAudioFilterModule(int pass, int stop)
{
assert (stop > pass);
@Override
public void reset()
{
}
mDCFilter = new DCRemovalFilter_RealBuffer();
@Override
public void setFilteredRealBufferListener( Listener<RealBuffer> listener )
{
mBandPassFilter.setListener( listener );
}
//TODO: change this to a band pass filter
mBandPassFilter = new RealFIRFilter_RB_RB(FilterFactory.getLowPass(48000, pass, stop, 60,
WindowType.HANNING, true), 1.0f);
@Override
public void removeFilteredRealBufferListener()
{
mBandPassFilter.removeListener();
}
mDCFilter.setListener(mBandPassFilter);
}
@Override
public void start( ScheduledExecutorService executor )
{
}
/**
* Constructs a demodulated audio filter using the filter taps and gain provided
*/
public DemodulatedAudioFilterModule(float[] taps, float gain)
{
mBandPassFilter = new RealFIRFilter_RB_RB(taps, gain);
}
@Override
public void stop()
{
}
@Override
public void dispose()
{
mBandPassFilter.dispose();
mBandPassFilter = null;
@Override
public Listener<RealBuffer> getUnFilteredRealBufferListener()
{
return mDCFilter;
}
mDCFilter.dispose();
mDCFilter = null;
}
@Override
public void reset()
{
}
@Override
public void setFilteredRealBufferListener(Listener<RealBuffer> listener)
{
mBandPassFilter.setListener(listener);
}
@Override
public void removeFilteredRealBufferListener()
{
mBandPassFilter.removeListener();
}
@Override
public void start(ScheduledExecutorService executor)
{
}
@Override
public void stop()
{
}
@Override
public Listener<RealBuffer> getUnFilteredRealBufferListener()
{
if(mDCFilter != null)
{
return mDCFilter;
}
else
{
return mBandPassFilter;
}
}
}

View File

@@ -1,112 +1,108 @@
/*******************************************************************************
* SDR Trunk
* Copyright (C) 2014-2016 Dennis Sheirer
*
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
******************************************************************************/
package module.demodulate.fm;
import java.util.concurrent.ScheduledExecutorService;
import dsp.filter.FilterFactory;
import dsp.filter.Window.WindowType;
import dsp.filter.fir.complex.ComplexFIRFilter_CB_CB;
import dsp.fm.FMDemodulator_CB;
import module.Module;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sample.Listener;
import sample.complex.ComplexBuffer;
import sample.complex.IComplexBufferListener;
import sample.real.IUnFilteredRealBufferProvider;
import sample.real.RealBuffer;
import dsp.filter.FilterFactory;
import dsp.filter.Window.WindowType;
import dsp.filter.fir.complex.ComplexFIRFilter_CB_CB;
import dsp.fm.FMDemodulator_CB;
public class FMDemodulatorModule extends Module
implements IComplexBufferListener, IUnFilteredRealBufferProvider
import java.util.concurrent.ScheduledExecutorService;
public class FMDemodulatorModule extends Module implements IComplexBufferListener, IUnFilteredRealBufferProvider
{
private final static Logger mLog = LoggerFactory.getLogger( FMDemodulatorModule.class );
private static final int SAMPLE_RATE = 48000;
private ComplexFIRFilter_CB_CB mIQFilter;
private FMDemodulator_CB mDemodulator;
/**
* FM Demodulator with I/Q filter. Demodulated output is unfiltered and
* may contain a DC component.
*
* @param pass - pass frequency for IQ filtering prior to demodulation. This
* frequency should be half of the signal bandwidth since the filter will
* be applied against each of the inphase and quadrature signals and the
* combined pass bandwidth will be twice this value.
*
* @param stop - stop frequency for IQ filtering prior to demodulation.
*/
public FMDemodulatorModule( int pass, int stop )
{
assert( stop > pass );
private final static Logger mLog = LoggerFactory.getLogger(FMDemodulatorModule.class);
mIQFilter = new ComplexFIRFilter_CB_CB( FilterFactory.getLowPass(
SAMPLE_RATE, pass, stop, 60, WindowType.HAMMING, true ), 1.0f );
mDemodulator = new FMDemodulator_CB( 1.0f );
mIQFilter.setListener( mDemodulator );
}
private static final int SAMPLE_RATE = 48000;
@Override
public Listener<ComplexBuffer> getComplexBufferListener()
{
return mIQFilter;
}
private ComplexFIRFilter_CB_CB mIQFilter;
private FMDemodulator_CB mDemodulator;
@Override
public void dispose()
{
mIQFilter.dispose();
mIQFilter = null;
mDemodulator.dispose();
mDemodulator = null;
}
/**
* FM Demodulator with I/Q filter. Demodulated output is unfiltered and
* may contain a DC component.
*
* @param pass - pass frequency for IQ filtering prior to demodulation. This
* frequency should be half of the signal bandwidth since the filter will
* be applied against each of the inphase and quadrature signals and the
* combined pass bandwidth will be twice this value.
* @param stop - stop frequency for IQ filtering prior to demodulation.
*/
public FMDemodulatorModule(int pass, int stop)
{
assert (stop > pass);
@Override
public void reset()
{
mDemodulator.reset();
}
mIQFilter = new ComplexFIRFilter_CB_CB(FilterFactory.getLowPass(
SAMPLE_RATE, pass, stop, 60, WindowType.HAMMING, true), 1.0f);
@Override
public void setUnFilteredRealBufferListener( Listener<RealBuffer> listener )
{
mDemodulator.setListener( listener );
}
mDemodulator = new FMDemodulator_CB(1.0f);
mIQFilter.setListener(mDemodulator);
}
@Override
public void removeUnFilteredRealBufferListener()
{
mDemodulator.removeListener();
}
@Override
public Listener<ComplexBuffer> getComplexBufferListener()
{
return mIQFilter;
}
@Override
public void start( ScheduledExecutorService executor )
{
}
@Override
public void dispose()
{
mIQFilter.dispose();
mIQFilter = null;
@Override
public void stop()
{
}
mDemodulator.dispose();
mDemodulator = null;
}
@Override
public void reset()
{
mDemodulator.reset();
}
@Override
public void setUnFilteredRealBufferListener(Listener<RealBuffer> listener)
{
mDemodulator.setListener(listener);
}
@Override
public void removeUnFilteredRealBufferListener()
{
mDemodulator.removeListener();
}
@Override
public void start(ScheduledExecutorService executor)
{
}
@Override
public void stop()
{
}
}

View File

@@ -166,9 +166,11 @@ public class PlaylistManager implements ChannelEventListener
mAliasModel.addAliases(playlist.getAliases());
mBroadcastModel.addBroadcastConfigurations(playlist.getBroadcastConfigurations());
mChannelModel.addChannels(playlist.getChannels());
mChannelMapModel.addChannelMaps(playlist.getChannelMaps());
//Channel model has to be loaded last since it will auto-start channels that are enabled
mChannelModel.addChannels(playlist.getChannels());
mPlaylistLoading = false;
}
}