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Merge pull request #338 from DSheirer/330-p25-c4fm-decoder-update

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330 p25 c4fm decoder update
This commit is contained in:
Denny Sheirer
2018-03-17 13:51:19 +00:00
committed by GitHub
parent 28f351287c 8868c1f954
commit 5dd1664844
71 changed files with 6092 additions and 2628 deletions
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2
build.gradle
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@@ -54,6 +54,8 @@ dependencies {
compile 'org.apache.axis:axis-jaxrpc:1.4'
compile 'org.apache.axis:axis:1.4'
compile 'com.fasterxml.jackson.dataformat:jackson-dataformat-xml:2.9.3'
compile 'org.kordamp.ikonli:ikonli-javafx:2.1.1'
compile 'org.kordamp.ikonli:ikonli-fontawesome-pack:2.1.1'
}
task wrapper(type: Wrapper) {

131
src/main/java/io/github/dsheirer/buffer/ComplexCircularBuffer.java
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@@ -1,17 +1,17 @@
/*******************************************************************************
* SDR Trunk
* Copyright (C) 2014 Dennis Sheirer
*
* Copyright (C) 2014-2018 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/>
******************************************************************************/
@@ -25,66 +25,83 @@ import java.util.Arrays;
* Circular sample buffer - allocates a buffer and stores samples in a circular
* fashion, overwriting older samples with newly arrived samples. Initially
* fills buffer with 0-valued samples
*
*
* Can be used as a delay-type buffer, to delay samples by the 'size' amount
*/
public class ComplexCircularBuffer
{
Complex[] mBuffer;
int mBufferPointer = 0;
public ComplexCircularBuffer( int size )
{
mBuffer = new Complex[ size ];
Arrays.fill( mBuffer, new Complex( 1.0f, 1.0f ) );
}
Complex[] mBuffer;
int mBufferPointer = 0;
/**
* Returns the sample currently pointed to in the buffer and stores the
* new sample in its place
* @param sample
* @return
*/
public Complex get( Complex sample )
{
Complex retVal = mBuffer[ mBufferPointer ];
public ComplexCircularBuffer(int size)
{
mBuffer = new Complex[size];
put( sample );
Arrays.fill(mBuffer, new Complex(1.0f, 1.0f));
}
return retVal;
}
public void put( Complex sample )
{
mBuffer[ mBufferPointer ] = sample;
public int length()
{
return mBuffer.length;
}
mBufferPointer++;
if( mBufferPointer >= mBuffer.length )
{
mBufferPointer = 0;
}
}
public Complex[] get( int count )
{
Complex[] samples = new Complex[ count ];
int tempCounter = mBufferPointer;
/**
* Returns the sample currently pointed to in the buffer and stores the
* new sample in its place
*
* @param sample
* @return
*/
public Complex get(Complex sample)
{
Complex retVal = mBuffer[mBufferPointer];
for( int x = 0; x < count; x++ )
{
samples[ x ] = mBuffer[ tempCounter ];
tempCounter++;
if( tempCounter > mBuffer.length - 1 )
{
tempCounter = 0;
}
}
return samples;
}
put(sample);
return retVal;
}
public void put(Complex sample)
{
mBuffer[mBufferPointer] = sample;
mBufferPointer++;
if(mBufferPointer >= mBuffer.length)
{
mBufferPointer = 0;
}
}
/**
* Returns the (count) oldest samples in a time ordered array
*/
public Complex[] get(int count)
{
Complex[] samples = new Complex[count];
int tempCounter = mBufferPointer;
for(int x = 0; x < count; x++)
{
samples[x] = mBuffer[tempCounter];
tempCounter++;
if(tempCounter > mBuffer.length - 1)
{
tempCounter = 0;
}
}
return samples;
}
/**
* Returns the samples in a time-ordered array
*/
public Complex[] getAll()
{
return get(length());
}
}

208
src/main/java/io/github/dsheirer/buffer/DoubleCircularBuffer.java
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@@ -1,80 +1,180 @@
/*******************************************************************************
* 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 io.github.dsheirer.buffer;
import org.apache.commons.math3.stat.descriptive.moment.Mean;
import org.apache.commons.math3.stat.descriptive.moment.StandardDeviation;
import org.apache.commons.math3.stat.descriptive.moment.Variance;
import org.apache.commons.math3.stat.descriptive.rank.Max;
import org.apache.commons.math3.stat.descriptive.rank.Min;
import java.util.Arrays;
/**
* Circular sample buffer - allocates a buffer and stores samples in a circular
* fashion, overwriting older samples with newly arrived samples. Initially
* fills buffer with 0-valued samples
*
* Can be used as a delay-type buffer, to delay samples by the 'size' amount
* Circular sample buffer - allocates a buffer and stores samples in a circular fashion, overwriting older samples with
* newly arrived samples. Initially fills buffer with 0-valued (default) samples or with a specified value.
*/
public class DoubleCircularBuffer
{
double[] mBuffer;
int mBufferPointer = 0;
public DoubleCircularBuffer( int size )
{
mBuffer = new double[ size ];
Arrays.fill( mBuffer, 0.0 );
}
private StandardDeviation mStandardDeviation;
private Variance mVariance;
private Max mMax;
private Mean mMean;
private Min mMin;
private double[] mBuffer;
private int mBufferPointer = 0;
/**
* Puts the new value into the buffer and returns the oldest buffer value
* that it replaced
* @param newValue
* @return
*/
public double get( double newValue )
{
double oldestSample = mBuffer[ mBufferPointer ];
/**
* Creates a circular double buffer of the specified size and all entries filled with the specified initial value.
* @param size of the buffer
* @param initialFillValue to fill the buffer entries
*/
public DoubleCircularBuffer(int size, double initialFillValue)
{
mBuffer = new double[size];
Arrays.fill(mBuffer, initialFillValue);
}
mBuffer[ mBufferPointer ] = newValue;
mBufferPointer++;
if( mBufferPointer >= mBuffer.length )
{
mBufferPointer = 0;
}
return oldestSample;
}
/**
* Creates a circular double buffer of the specified size and all entries filled with an initial value of zero.
* @param size of the buffer
*/
public DoubleCircularBuffer(int size)
{
this(size, 0.0);
}
/**
* Returns the maximum from the values currently in the buffer
*/
public double max()
{
double max = 0.0d;
for( int x = 0; x < mBuffer.length; x++ )
{
if( mBuffer[ x ] > max )
{
max = mBuffer[ x ];
}
}
return max;
}
/**
* Puts the new value into the buffer and returns the oldest buffer value that it replaced
*
* @param newValue to add to the buffer
* @return oldest value that was overwritten by the new value
*/
public double get(double newValue)
{
double oldestSample = mBuffer[mBufferPointer];
mBuffer[mBufferPointer] = newValue;
mBufferPointer++;
if(mBufferPointer >= mBuffer.length)
{
mBufferPointer = 0;
}
return oldestSample;
}
public double[] getAll()
{
int valuePointer = 0;
double[] values = new double[mBuffer.length];
int bufferPointer = mBufferPointer;
while(valuePointer < values.length)
{
values[valuePointer++] = mBuffer[bufferPointer++];
if(bufferPointer >= mBuffer.length)
{
bufferPointer = 0;
}
}
return values;
}
/**
* Places the new value into the buffer, overwriting the oldest value
* @param newValue to add to the buffer
*/
public void put(double newValue)
{
mBuffer[mBufferPointer] = newValue;
mBufferPointer++;
if(mBufferPointer >= mBuffer.length)
{
mBufferPointer = 0;
}
}
/**
* Returns the maximum from the values currently in the buffer
*/
public double max()
{
if(mMax == null)
{
mMax = new Max();
}
return mMax.evaluate(mBuffer, 0, mBuffer.length);
}
/**
* Returns the minimum from the values currently in the buffer
*/
public double min()
{
if(mMin == null)
{
mMin = new Min();
}
return mMin.evaluate(mBuffer, 0, mBuffer.length);
}
public double standardDeviation()
{
if(mStandardDeviation == null)
{
mStandardDeviation = new StandardDeviation();
}
return mStandardDeviation.evaluate(mBuffer);
}
/**
* Calculates the variance of the values contained in this buffer
*/
public double variance()
{
if(mVariance == null)
{
mVariance = new Variance();
}
return mVariance.evaluate(mBuffer);
}
/**
* Calculates the average/mean of the values contained in this buffer
*/
public double mean()
{
if(mMean == null)
{
mMean = new Mean();
}
return mMean.evaluate(mBuffer, 0, mBuffer.length);
}
}

172
src/main/java/io/github/dsheirer/buffer/FloatCircularBuffer.java
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@@ -1,17 +1,17 @@
/*******************************************************************************
* 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/>
******************************************************************************/
@@ -23,96 +23,98 @@ import java.util.Arrays;
* Circular sample buffer - allocates a buffer and stores samples in a circular
* fashion, overwriting older samples with newly arrived samples. Initially
* fills buffer with 0-valued samples
*
* Can be used as a delay-type buffer, to delay samples by the 'size' amount
* @author denny
*
* Can be used as a delay-type buffer, to delay samples by the 'size' amount
*
* @author denny
*/
public class FloatCircularBuffer
{
float[] mBuffer;
int mBufferPointer = 0;
public FloatCircularBuffer( int size )
{
mBuffer = new float[ size ];
Arrays.fill( mBuffer, (float)0.0 );
}
public int getSize()
{
return mBuffer.length;
}
public float[] getBuffer()
{
return mBuffer;
}
float[] mBuffer;
int mBufferPointer = 0;
/**
* Puts the new value into the buffer and returns the oldest buffer value
* that it replaced
* @param newValue
* @return
*/
public float get( float newValue )
{
float oldestSample = mBuffer[ mBufferPointer ];
/**
* Creates a circular double buffer of the specified size and all entries filled with the specified initial value.
*
* @param size of the buffer
* @param initialFillValue to fill the buffer entries
*/
public FloatCircularBuffer(int size, float initialFillValue)
{
mBuffer = new float[size];
Arrays.fill(mBuffer, initialFillValue);
}
mBuffer[ mBufferPointer ] = newValue;
mBufferPointer++;
if( mBufferPointer >= mBuffer.length )
{
mBufferPointer = 0;
}
return oldestSample;
}
/**
* Creates a circular double buffer of the specified size and all entries filled with an initial value of zero.
*
* @param size of the buffer
*/
public FloatCircularBuffer(int size)
{
this(size, 0.0f);
}
/**
* Convenience method to put a new value in the buffer, while discarding
* the old value
*/
public void put( float newValue )
{
get( newValue );
}
public float[] getBuffer()
{
return mBuffer;
}
/**
* Returns an array of arraySize, loaded with sampleCount of the
* oldest samples, loaded into the array starting at index 0.
*
* This is useful for fetching an array filled half way with samples to
* use in FFT processing.
* @param arraySize - size of the array (must be larger than sampleCount)
* @param sampleCount - number of the oldest samples in the buffer to load
* @return
*/
public float[] get( int arraySize, int sampleCount )
{
float[] samples = new float[ arraySize ];
/**
* Puts the new value into the buffer and returns the oldest buffer value that it replaced
*
* @param newValue to add to the buffer
* @return oldest value that was overwritten by the new value
*/
public float get(float newValue)
{
float oldestSample = mBuffer[mBufferPointer];
if( arraySize > sampleCount )
{
int tempCounter = mBufferPointer;
mBuffer[mBufferPointer] = newValue;
for( int x = 0; x < sampleCount; x++ )
{
samples[ x ] = mBuffer[ tempCounter ];
tempCounter++;
if( tempCounter > mBuffer.length )
{
tempCounter = 0;
}
}
}
return samples;
}
mBufferPointer++;
if(mBufferPointer >= mBuffer.length)
{
mBufferPointer = 0;
}
return oldestSample;
}
public float[] getAll()
{
int valuePointer = 0;
float[] values = new float[mBuffer.length];
int bufferPointer = mBufferPointer;
while(valuePointer < values.length)
{
values[valuePointer++] = mBuffer[bufferPointer++];
if(bufferPointer >= mBuffer.length)
{
bufferPointer = 0;
}
}
return values;
}
/**
* Places the new value into the buffer, overwriting the oldest value
*
* @param newValue to add to the buffer
*/
public void put(float newValue)
{
mBuffer[mBufferPointer] = newValue;
mBufferPointer++;
if(mBufferPointer >= mBuffer.length)
{
mBufferPointer = 0;
}
}
}

14
src/main/java/io/github/dsheirer/dsp/filter/FilterFactory.java
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@@ -666,11 +666,11 @@ public class FilterFactory
* @param alpha - roll-off factor
* @return - filter coefficients
*/
public static float[] getRootRaisedCosine(int samplesPerSymbol,
public static float[] getRootRaisedCosine(float samplesPerSymbol,
int symbols,
float alpha)
{
int taps = samplesPerSymbol * symbols + 1;
int taps = (int)(samplesPerSymbol * (float)symbols + 1.0f);
float scale = 0;
@@ -680,8 +680,8 @@ public class FilterFactory
{
float index = (float) x - ((float) taps / 2.0f);
float x1 = (float) Math.PI * index / (float) samplesPerSymbol;
float x2 = 4.0f * alpha * index / (float) samplesPerSymbol;
float x1 = (float) Math.PI * index / samplesPerSymbol;
float x2 = 4.0f * alpha * index / samplesPerSymbol;
float x3 = x2 * x2 - 1.0f;
float numerator, denominator;
@@ -692,7 +692,7 @@ public class FilterFactory
{
numerator = (float) Math.cos((1.0 + alpha) * x1) +
(float) Math.sin((1.0f - alpha) * x1) /
(4.0f * alpha * index / (float) samplesPerSymbol);
(4.0f * alpha * index / samplesPerSymbol);
}
else
{
@@ -713,9 +713,9 @@ public class FilterFactory
x3 = (1.0f - alpha) * x1;
x2 = (1.0f + alpha) * x1;
numerator = (float) (Math.sin(x2) * (1.0f + alpha) * Math.PI -
numerator = (float) (Math.sin(x2) * (1.0 + alpha) * Math.PI -
Math.cos(x3) * ((1.0 - alpha) * Math.PI *
(double) samplesPerSymbol) / (4 * alpha * index) +
(double) samplesPerSymbol) / (4.0 * alpha * index) +
Math.sin(x3) * (double) samplesPerSymbol *
(double) samplesPerSymbol / (4.0 * alpha * index * index));

278
src/main/java/io/github/dsheirer/dsp/filter/design/FilterView.java
View File

@@ -12,155 +12,169 @@ import org.jtransforms.fft.FloatFFT_1D;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.net.URL;
public class FilterView extends BorderPane
{
private final static Logger mLog = LoggerFactory.getLogger( FilterView.class );
private final static Logger mLog = LoggerFactory.getLogger(FilterView.class);
private CurveFittedAreaChart mImpulseChart;
private NumberAxis mImpulseXAxis;
private NumberAxis mImpulseYAxis;
private CurveFittedAreaChart mDFTChart;
private NumberAxis mDFTXAxis;
private NumberAxis mDFTYAxis;
private static final int FFT_SIZE = 4096;
private FloatFFT_1D mFFT = new FloatFFT_1D( FFT_SIZE );
public FilterView( float[] taps )
{
init();
private CurveFittedAreaChart mImpulseChart;
private NumberAxis mImpulseXAxis;
private NumberAxis mImpulseYAxis;
private CurveFittedAreaChart mDFTChart;
private NumberAxis mDFTXAxis;
private NumberAxis mDFTYAxis;
private static final int FFT_SIZE = 4096;
private FloatFFT_1D mFFT = new FloatFFT_1D(FFT_SIZE);
if( taps != null )
{
setImpulseTaps( taps );
public FilterView(float[] taps)
{
init();
float[] dft = new float[ FFT_SIZE ];
System.arraycopy( taps, 0, dft, 0, taps.length );
mFFT.realForward( dft );
setDFTTaps( convertDFTToDecibel( dft, taps.length ) );
}
}
private void init()
{
HBox hbox = new HBox();
mImpulseXAxis = new NumberAxis( 0.0, 0.5, 1.0 );
mImpulseYAxis = new NumberAxis( -0.2, 1.2, .1 );
mImpulseChart = new CurveFittedAreaChart( mImpulseXAxis, mImpulseYAxis );
mImpulseChart.setLegendVisible( false );
mImpulseChart.setHorizontalGridLinesVisible( false );
mImpulseChart.setVerticalGridLinesVisible(false);
if(taps != null)
{
setImpulseTaps(taps);
float[] dft = new float[FFT_SIZE];
System.arraycopy(taps, 0, dft, 0, taps.length);
mFFT.realForward(dft);
setDFTTaps(convertDFTToDecibel(dft, taps.length));
}
}
private void init()
{
HBox hbox = new HBox();
mImpulseXAxis = new NumberAxis(0.0, 0.5, 1.0);
mImpulseYAxis = new NumberAxis(-0.2, 1.2, .1);
mImpulseChart = new CurveFittedAreaChart(mImpulseXAxis, mImpulseYAxis);
mImpulseChart.setLegendVisible(false);
mImpulseChart.setHorizontalGridLinesVisible(false);
mImpulseChart.setVerticalGridLinesVisible(false);
mImpulseChart.setAlternativeColumnFillVisible(false);
mImpulseChart.setAlternativeRowFillVisible(false);
String css = FilterView.class.getResource( "FilterView.css" ).toExternalForm();
mImpulseChart.getStylesheets().add( css );
hbox.getChildren().add( mImpulseChart );
HBox.setHgrow( mImpulseChart, Priority.ALWAYS );
mDFTXAxis = new NumberAxis( 0.0, FFT_SIZE / 2, FFT_SIZE / 8 );
mDFTYAxis = new NumberAxis( -200.0, 10.0, 10.0 );
mDFTChart = new CurveFittedAreaChart( mDFTXAxis, mDFTYAxis );
mDFTChart.setLegendVisible( false );
mDFTChart.setHorizontalGridLinesVisible( false );
mDFTChart.setVerticalGridLinesVisible(false);
URL cssURL = FilterView.class.getResource("FilterView.css");
String css = null;
if(cssURL != null)
{
css = cssURL.toExternalForm();
}
hbox.getChildren().add(mImpulseChart);
HBox.setHgrow(mImpulseChart, Priority.ALWAYS);
mDFTXAxis = new NumberAxis(0.0, FFT_SIZE / 2, FFT_SIZE / 8);
mDFTYAxis = new NumberAxis(-200.0, 10.0, 10.0);
mDFTChart = new CurveFittedAreaChart(mDFTXAxis, mDFTYAxis);
mDFTChart.setLegendVisible(false);
mDFTChart.setHorizontalGridLinesVisible(false);
mDFTChart.setVerticalGridLinesVisible(false);
mDFTChart.setAlternativeColumnFillVisible(false);
mDFTChart.setAlternativeRowFillVisible(false);
mDFTChart.getStylesheets().add( css );
hbox.getChildren().add( mDFTChart );
HBox.setHgrow( mDFTChart, Priority.ALWAYS );
setCenter( hbox );
}
public void setImpulseTaps( double[] taps )
{
float[] convertedTaps = new float[ taps.length ];
for( int x = 0; x < taps.length; x++ )
{
convertedTaps[ x ] = (float)taps[ x ];
}
setImpulseTaps( convertedTaps );
}
public void setImpulseTaps( float[] taps )
{
double smallest = 0.0;
double largest = 0.0;
final XYChart.Series<Number, Number> series = new XYChart.Series<>();
for( int x = 0; x < taps.length; x++ )
if(css != null)
{
if( taps[ x ] < smallest )
{
smallest = taps[ x ];
}
if( taps[ x ] > largest )
{
largest = taps[ x ];
}
series.getData().add( new XYChart.Data<Number, Number>( x, taps[ x ] ) );
mImpulseChart.getStylesheets().add(css);
mDFTChart.getStylesheets().add(css);
}
mImpulseXAxis.setLowerBound( 0.0 );
mImpulseXAxis.setUpperBound( taps.length - 1 );
mImpulseXAxis.setTickUnit( 1.0 );
double padding = Math.abs( largest - smallest ) * .1;
mImpulseYAxis.setLowerBound( smallest - padding );
mImpulseYAxis.setUpperBound( largest + padding );
mImpulseYAxis.setTickUnit( padding );
hbox.getChildren().add(mDFTChart);
HBox.setHgrow(mDFTChart, Priority.ALWAYS);
setCenter(hbox);
}
public void setImpulseTaps(double[] taps)
{
float[] convertedTaps = new float[taps.length];
for(int x = 0; x < taps.length; x++)
{
convertedTaps[x] = (float)taps[x];
}
setImpulseTaps(convertedTaps);
}
public void setImpulseTaps(float[] taps)
{
double smallest = 0.0;
double largest = 0.0;
final XYChart.Series<Number,Number> series = new XYChart.Series<>();
for(int x = 0; x < taps.length; x++)
{
if(taps[x] < smallest)
{
smallest = taps[x];
}
if(taps[x] > largest)
{
largest = taps[x];
}
series.getData().add(new XYChart.Data<Number,Number>(x, taps[x]));
}
mImpulseXAxis.setLowerBound(0.0);
mImpulseXAxis.setUpperBound(taps.length - 1);
mImpulseXAxis.setTickUnit(1.0);
double padding = Math.abs(largest - smallest) * .1;
mImpulseYAxis.setLowerBound(smallest - padding);
mImpulseYAxis.setUpperBound(largest + padding);
mImpulseYAxis.setTickUnit(padding);
ObservableList<Series<Number,Number>> list = mImpulseChart.getData();
list.add( series );
}
public void setDFTTaps( float[] taps )
{
double smallest = 0.0;
final XYChart.Series<Number, Number> series = new XYChart.Series<>();
for( int x = 0; x < taps.length; x++ )
{
if( taps[ x ] < smallest )
{
smallest = taps[ x ];
}
series.getData().add( new XYChart.Data<Number, Number>( x, taps[ x ] ) );
}
ObservableList<Series<Number,Number>> list = mDFTChart.getData();
list.add( series );
}
public float[] convertDFTToDecibel( float[] dft, int tapLength )
list.add(series);
}
public void setDFTTaps(float[] taps)
{
float[] decibels = new float[ dft.length / 2 ];
double smallest = 0.0;
int index = 0;
for( int x = 0; x < decibels.length; x ++ )
{
index = x * 2;
decibels[ x ] = 20.0f * (float)Math.log10( ( ( dft[ index ] * dft[ index ] ) +
( dft[ index + 1 ] * dft[ index + 1 ] ) ) );
}
final XYChart.Series<Number,Number> series = new XYChart.Series<>();
return decibels;
for(int x = 0; x < taps.length; x++)
{
if(taps[x] < smallest)
{
smallest = taps[x];
}
series.getData().add(new XYChart.Data<Number,Number>(x, taps[x]));
}
ObservableList<Series<Number,Number>> list = mDFTChart.getData();
list.add(series);
}
public float[] convertDFTToDecibel(float[] dft, int tapLength)
{
float[] decibels = new float[dft.length / 2];
int index = 0;
for(int x = 0; x < decibels.length; x++)
{
index = x * 2;
decibels[x] = 20.0f * (float)Math.log10(((dft[index] * dft[index]) +
(dft[index + 1] * dft[index + 1])));
}
return decibels;
}
}

20
src/main/java/io/github/dsheirer/dsp/filter/design/FilterViewer.java
View File

@@ -39,15 +39,24 @@ public class FilterViewer extends Application
*/
private float[] getFilter()
{
// FIRFilterSpecification specification = FIRFilterSpecification.lowPassBuilder()
// .sampleRate(48000)
// .gridDensity(16)
// .passBandCutoff(2500)
// .passBandAmplitude(1.0)
// .passBandRipple(0.01)
// .stopBandStart(4000)
// .stopBandAmplitude(0.0)
// .stopBandRipple(0.008)
// .build();
FIRFilterSpecification specification = FIRFilterSpecification.lowPassBuilder()
.sampleRate(48000)
.gridDensity(16)
.passBandCutoff(2500)
.passBandCutoff(5100)
.passBandAmplitude(1.0)
.passBandRipple(0.01)
.stopBandStart(4000)
.stopBandAmplitude(0.0)
.stopBandRipple(0.008)
.stopBandStart(6500)
.stopBandRipple(0.01)
.build();
// FIRFilterSpecification specification = FIRFilterSpecification.highPassBuilder()
@@ -72,6 +81,9 @@ public class FilterViewer extends Application
float[] taps = null;
// taps = FilterFactory.getSinc(6000, 1920, 47, Window.WindowType.BLACKMAN);
// taps = FilterFactory.getRootRaisedCosine(10, 10, 0.2f);
// taps = FilterFactory.getLowPass(48000, 6750, 7500, 60,
// Window.WindowType.HAMMING, true);

126
src/main/java/io/github/dsheirer/dsp/filter/fir/complex/ComplexFIRFilter.java
View File

@@ -1,54 +1,90 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.filter.fir.complex;
import io.github.dsheirer.dsp.filter.fir.FIRFilter;
import io.github.dsheirer.dsp.filter.fir.real.RealFIRFilter;
import io.github.dsheirer.sample.complex.Complex;
import io.github.dsheirer.sample.complex.ComplexBuffer;
public class ComplexFIRFilter extends FIRFilter
{
private RealFIRFilter mIFilter;
private RealFIRFilter mQFilter;
/**
* Complex FIR Filter for processing complex sample pairs. Wraps two real
* FIR filters for processing each of the inphase and quadrature samples.
*
* @param coefficients - filter taps
* @param gain - gain to apply to filtered outputs - use 1.0f for no gain
*/
public ComplexFIRFilter( float[] coefficients, float gain )
{
mIFilter = new RealFIRFilter( coefficients, gain );
mQFilter = new RealFIRFilter( coefficients, gain );
}
public float[] getCoefficients()
{
return mIFilter.getCoefficients();
}
public float filterInphase( float sample )
{
return mIFilter.filter( sample );
}
public float filterQuadrature( float sample )
{
return mQFilter.filter( sample );
}
public Complex filter( Complex sample )
{
float i = filterInphase( sample.inphase() );
float q = filterQuadrature( sample.quadrature() );
return new Complex( i, q );
}
@Override
public void dispose()
{
mIFilter.dispose();
mQFilter.dispose();
}
private RealFIRFilter mIFilter;
private RealFIRFilter mQFilter;
/**
* Complex FIR Filter for processing complex sample pairs. Wraps two real
* FIR filters for processing each of the inphase and quadrature samples.
*
* @param coefficients - filter taps
* @param gain - gain to apply to filtered outputs - use 1.0f for no gain
*/
public ComplexFIRFilter(float[] coefficients, float gain)
{
mIFilter = new RealFIRFilter(coefficients, gain);
mQFilter = new RealFIRFilter(coefficients, gain);
}
public float[] getCoefficients()
{
return mIFilter.getCoefficients();
}
public float filterInphase(float sample)
{
return mIFilter.filter(sample);
}
public float filterQuadrature(float sample)
{
return mQFilter.filter(sample);
}
public Complex filter(Complex sample)
{
float i = filterInphase(sample.inphase());
float q = filterQuadrature(sample.quadrature());
return new Complex(i, q);
}
/**
* Filters the complex samples from the buffer and returns a new complex buffer with the filtered output
*
* @param buffer with complex samples to filter
* @return new buffer containing filtered complex samples
*/
public ComplexBuffer filter(ComplexBuffer buffer)
{
float[] samples = buffer.getSamples();
float[] filtered = new float[samples.length];
for(int x = 0; x < samples.length; x += 2)
{
filtered[x] = filterInphase(samples[x]);
filtered[x + 1] = filterQuadrature(samples[x + 1]);
}
return new ComplexBuffer(filtered);
}
@Override
public void dispose()
{
mIFilter.dispose();
mQFilter.dispose();
}
}

3
src/main/java/io/github/dsheirer/dsp/filter/fir/complex/ComplexFIRFilter_CB_CB.java
View File

@@ -3,8 +3,7 @@ package io.github.dsheirer.dsp.filter.fir.complex;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.complex.ComplexBuffer;
public class ComplexFIRFilter_CB_CB extends ComplexFIRFilter
implements Listener<ComplexBuffer>
public class ComplexFIRFilter_CB_CB extends ComplexFIRFilter implements Listener<ComplexBuffer>
{
private Listener<ComplexBuffer> mListener;

124
src/main/java/io/github/dsheirer/dsp/filter/interpolator/RealInterpolator.java
View File

@@ -5,54 +5,86 @@ import org.apache.commons.lang3.Validate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.text.DecimalFormat;
import java.util.Arrays;
public class RealInterpolator extends Interpolator
{
private final static Logger mLog = LoggerFactory.getLogger( RealInterpolator.class );
private final static Logger mLog = LoggerFactory.getLogger(RealInterpolator.class);
private float mGain;
public RealInterpolator( float gain )
{
mGain = gain;
}
/**
* Calculates an interpolated value from the 8 samples beginning at the
* offset index. Uses the mu value to determine which of 128 filter kernels
* to use in order to closely approximate the ideal frequency response for
* the value of mu, ranging from 0.0 to 1.0, indicating the interpolated
* position in the sample set ranging from offset to offset + 7.
*
* @param samples - sample array of length at least offset + 7
*
* @param mu - interpolated sample position between 0 and 1.0
*
* @return - interpolated sample value
*/
public float filter( float[] samples, int offset, float mu )
{
/* Ensure we have enough samples in the array */
Validate.isTrue(samples.length >= offset + 7);
private float mGain;
/* Identify the filter bank that corresponds to mu */
int index = (int)( NSTEPS * mu );
float accumulator = ( TAPS[ index ][ 7 ] * samples[ offset ] );
accumulator += ( TAPS[ index ][ 6 ] * samples[ offset + 1 ] );
accumulator += ( TAPS[ index ][ 5 ] * samples[ offset + 2 ] );
accumulator += ( TAPS[ index ][ 4 ] * samples[ offset + 3 ] );
accumulator += ( TAPS[ index ][ 3 ] * samples[ offset + 4 ] );
accumulator += ( TAPS[ index ][ 2 ] * samples[ offset + 5 ] );
accumulator += ( TAPS[ index ][ 1 ] * samples[ offset + 6 ] );
accumulator += ( TAPS[ index ][ 0 ] * samples[ offset + 7 ] );
return accumulator * mGain;
}
public Complex filter( float[] iSamples, float[] qSamples, int offset, float mu )
{
float i = filter( iSamples, offset, mu );
float q = filter( qSamples, offset, mu );
return new Complex( i, q );
}
/**
* Provides an interpolated sample point along an eight-sample waveform representation using 128 filters to
* provide approximate interpolation with a resolution of 1/128th of a sample.
*
* @param gain to apply to the interpolated sample
*/
public RealInterpolator(float gain)
{
mGain = gain;
}
/**
* Calculates an interpolated value from eight samples that start at the offset into the sample array. The
* interpolated sample will fall within the middle of the eight sample array, between indexes offset+3 and
* offset+4. The mu argument is translated into an index position between 0 and 128, where a mu of 0.0 will be
* converted to index zero and will be equal to the sample at index offset+3 and a mu of 1.0 will be equal to
* the sample at offset+4. All mu values between 0.0 and 1.0 will be converted to a 1 - 127 index and will
* produce an approximated value from among 127 interpolated sample points between indexes offset+3 and offset+4.
*
* @param samples - sample array of length at least offset + 7
* @param mu - interpolated sample position between 0.0 and 1.0
* @return - interpolated sample value
*/
public float filter(float[] samples, int offset, float mu)
{
/* Ensure we have enough samples in the array */
Validate.isTrue(samples.length >= offset + 7);
/* Identify the filter bank that corresponds to mu */
int index = (int)(NSTEPS * mu);
float accumulator = (TAPS[index][7] * samples[offset]);
accumulator += (TAPS[index][6] * samples[offset + 1]);
accumulator += (TAPS[index][5] * samples[offset + 2]);
accumulator += (TAPS[index][4] * samples[offset + 3]);
accumulator += (TAPS[index][3] * samples[offset + 4]);
accumulator += (TAPS[index][2] * samples[offset + 5]);
accumulator += (TAPS[index][1] * samples[offset + 6]);
accumulator += (TAPS[index][0] * samples[offset + 7]);
return accumulator * mGain;
}
public Complex filter(float[] iSamples, float[] qSamples, int offset, float mu)
{
float i = filter(iSamples, offset, mu);
float q = filter(qSamples, offset, mu);
return new Complex(i, q);
}
public static void main(String[] args)
{
RealInterpolator interpolator = new RealInterpolator(1.0f);
DecimalFormat decimalFormat = new DecimalFormat("0.0000");
double TWO_PI = Math.PI * 2.0;
float[] samples = new float[16];
for(int x = 0; x < 16; x++)
{
samples[x] = (float)Math.sin(TWO_PI * (double)x / 8.0);
}
mLog.debug("Samples: " + Arrays.toString(samples));
for(float x = 0.0f; x <= 1.01f; x += 0.1f)
{
mLog.debug(decimalFormat.format(x) + ": " + decimalFormat.format(interpolator.filter(samples, 1, x)));
}
}
}

133
src/main/java/io/github/dsheirer/dsp/fm/FMDemodulator.java
View File

@@ -1,78 +1,103 @@
/*******************************************************************************
* SDR Trunk
* Copyright (C) 2014,2015 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 io.github.dsheirer.dsp.fm;
import io.github.dsheirer.sample.complex.Complex;
public abstract class FMDemodulator
{
private float mPreviousI = 0.0f;
private float mPreviousQ = 0.0f;
protected float mGain;
private float mPreviousI = 0.0f;
private float mPreviousQ = 0.0f;
protected float mGain;
public FMDemodulator( float gain )
{
mGain = gain;
}
public FMDemodulator(float gain)
{
mGain = gain;
}
public float demodulate( float currentI, float currentQ )
{
/**
* Multiply the current sample against the complex conjugate of the
* previous sample to derive the phase delta between the two samples
*
* Negating the previous sample quadrature produces the conjugate
*/
double inphase = ( currentI * mPreviousI ) - ( currentQ * -mPreviousQ );
double quadrature = ( currentQ * mPreviousI ) + ( currentI * -mPreviousQ );
double angle = 0.0f;
//Check for divide by zero
if( inphase != 0 )
{
/**
* Use the arc-tangent of quadrature divided by inphase to
* get the phase angle (+/-) which was directly manipulated by the
* original message waveform during the modulation. This value now
* serves as the instantaneous amplitude of the demodulated signal
*/
double denominator = 1.0d / inphase;
angle = Math.atan( (double)quadrature * denominator );
}
/**
* Store the current sample to use during the next iteration
*/
mPreviousI = currentI;
mPreviousQ = currentQ;
return (float)( angle * mGain );
}
public float demodulate(float currentI, float currentQ)
{
/**
* Multiply the current sample against the complex conjugate of the
* previous sample to derive the phase delta between the two samples
*
* Negating the previous sample quadrature produces the conjugate
*/
double inphase = (currentI * mPreviousI) - (currentQ * -mPreviousQ);
double quadrature = (currentQ * mPreviousI) + (currentI * -mPreviousQ);
public abstract void dispose();
double angle = 0.0f;
public void reset()
{
mPreviousI = 0.0f;
mPreviousQ = 0.0f;
}
//Check for divide by zero
if(inphase != 0)
{
/**
* Use the arc-tangent of quadrature divided by inphase to
* get the phase angle (+/-) which was directly manipulated by the
* original message waveform during the modulation. This value now
* serves as the instantaneous amplitude of the demodulated signal
*/
double denominator = 1.0d / inphase;
angle = Math.atan((double)quadrature * denominator);
}
public void setGain( float gain )
{
mGain = gain;
}
/**
* Store the current sample to use during the next iteration
*/
mPreviousI = currentI;
mPreviousQ = currentQ;
return (float)(angle * mGain);
}
public static double demodulate(Complex previous, Complex current)
{
double inphase = (current.inphase() * previous.inphase()) - (current.quadrature() * -previous.quadrature());
double quadrature = (current.quadrature() * previous.inphase()) + (current.inphase() * -previous.quadrature());
double angle = 0.0f;
//Check for divide by zero
if(inphase != 0)
{
/**
* Use the arc-tangent of quadrature divided by inphase to
* get the phase angle (+/-) which was directly manipulated by the
* original message waveform during the modulation. This value now
* serves as the instantaneous amplitude of the demodulated signal
*/
double denominator = 1.0d / inphase;
angle = Math.atan((double)quadrature * denominator);
}
return angle;
}
public abstract void dispose();
public void reset()
{
mPreviousI = 0.0f;
mPreviousQ = 0.0f;
}
public void setGain(float gain)
{
mGain = gain;
}
}

3
src/main/java/io/github/dsheirer/dsp/fm/FMDemodulator_CB.java
View File

@@ -26,8 +26,7 @@ import org.slf4j.LoggerFactory;
public class FMDemodulator_CB extends FMDemodulator implements Listener<ComplexBuffer>
{
private final static Logger mLog =
LoggerFactory.getLogger( FMDemodulator_CB.class );
private final static Logger mLog = LoggerFactory.getLogger( FMDemodulator_CB.class );
private Listener<RealBuffer> mListener;

205
src/main/java/io/github/dsheirer/dsp/gain/ComplexFeedForwardGainControl.java
View File

@@ -1,112 +1,125 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.gain;
import io.github.dsheirer.buffer.FloatCircularBuffer;
import io.github.dsheirer.sample.complex.Complex;
import io.github.dsheirer.sample.complex.ComplexBuffer;
import io.github.dsheirer.sample.complex.ComplexSampleListener;
/*******************************************************************************
* SDR Trunk
* Copyright (C) 2015 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/>
*
* This class is modeled using concepts detailed in the GNURadio
* implementation of feed forward AGC class located at:
* https://github.com/gnuradio/gnuradio/blob/master/gr-analog/lib/
* feedforward_agc_cc_impl.cc
*
******************************************************************************/
public class ComplexFeedForwardGainControl implements ComplexSampleListener
{
public static final float OBJECTIVE_ENVELOPE = 1.0f;
public static final float MINIMUM_ENVELOPE = 0.0001f;
public static final float OBJECTIVE_ENVELOPE = 1.0f;
public static final float MINIMUM_ENVELOPE = 0.0001f;
private ComplexSampleListener mListener;
private ComplexSampleListener mListener;
private FloatCircularBuffer mEnvelopeHistory;
private float mMaxEnvelope = 0.0f;
private float mGain = 1.0f;
/**
* Dynamic gain control for incoming sample stream to amplify or attenuate
* all samples toward an objective unity)gain, using the maximum envelope
* value detected in the stream history window.
*
* Uses the specified damping factor to limit gain swings. Damping factor
* is applied against the delta between current gain value and a recalculated
* gain value to limit how quickly the gain value will increase or decrease.
*
* @param window - history size to use in detecting maximum envelope value
* @param damping - a value between 0 < damping <= 1.0;
*/
public ComplexFeedForwardGainControl( int window )
{
mEnvelopeHistory = new FloatCircularBuffer( window );
}
public void dispose()
{
mListener = null;
}
private FloatCircularBuffer mEnvelopeHistory;
@Override
public void receive( float inphase, float quadrature )
{
float envelope = Complex.envelope( inphase, quadrature );
private float mMaxEnvelope = 0.0f;
private float mGain = 1.0f;
if( envelope > mMaxEnvelope )
{
mMaxEnvelope = envelope;
adjustGain();
}
/**
* Dynamic gain control for incoming sample stream to amplify or attenuate
* all samples toward an objective unity)gain, using the maximum envelope
* value detected in the stream history window.
*
* Uses the specified damping factor to limit gain swings. Damping factor
* is applied against the delta between current gain value and a recalculated
* gain value to limit how quickly the gain value will increase or decrease.
*
* @param window - history size to use in detecting maximum envelope value
*/
public ComplexFeedForwardGainControl(int window)
{
mEnvelopeHistory = new FloatCircularBuffer(window);
}
/* Replace oldest envelope value with current envelope value */
float oldestEnvelope = mEnvelopeHistory.get( envelope );
public void dispose()
{
mListener = null;
}
/* If the oldest envelope value was the max envelope value, then we
* have to rediscover the max value from the envelope history */
if( mMaxEnvelope == oldestEnvelope && mMaxEnvelope != envelope )
{
mMaxEnvelope = MINIMUM_ENVELOPE;
for( float value: mEnvelopeHistory.getBuffer() )
{
if( value > mMaxEnvelope )
{
mMaxEnvelope = value;
}
}
adjustGain();
}
/* Apply current gain value to the sample and send to the listener */
if( mListener != null )
{
mListener.receive( inphase *= mGain, quadrature *= mGain );
}
}
private void adjustGain()
{
mGain = OBJECTIVE_ENVELOPE / mMaxEnvelope;
}
@Override
public void receive(float inphase, float quadrature)
{
process(inphase, quadrature);
public void setListener( ComplexSampleListener listener )
{
mListener = listener;
}
/* Apply current gain value to the sample and send to the listener */
if(mListener != null)
{
mListener.receive(inphase *= mGain, quadrature *= mGain);
}
}
private void process(float inphase, float quadrature)
{
float envelope = Complex.envelope(inphase, quadrature);
if(envelope > mMaxEnvelope)
{
mMaxEnvelope = envelope;
adjustGain();
}
/* Replace oldest envelope value with current envelope value */
float oldestEnvelope = mEnvelopeHistory.get(envelope);
/* If the oldest envelope value was the max envelope value, then we
* have to rediscover the max value from the envelope history */
if(mMaxEnvelope == oldestEnvelope && mMaxEnvelope != envelope)
{
mMaxEnvelope = MINIMUM_ENVELOPE;
for(float value : mEnvelopeHistory.getBuffer())
{
if(value > mMaxEnvelope)
{
mMaxEnvelope = value;
}
}
adjustGain();
}
}
private void adjustGain()
{
mGain = OBJECTIVE_ENVELOPE / mMaxEnvelope;
}
public void setListener(ComplexSampleListener listener)
{
mListener = listener;
}
public ComplexBuffer filter(ComplexBuffer complexBuffer)
{
float[] samples = complexBuffer.getSamples();
float[] processed = new float[samples.length];
for(int x = 0; x < samples.length; x += 2)
{
process(samples[x], samples[x + 1]);
processed[x] = samples[x] * mGain;
processed[x + 1] = samples[x + 1] * mGain;
}
return new ComplexBuffer(processed);
}
}

49
src/main/java/io/github/dsheirer/dsp/gain/ComplexGain.java
View File

@@ -5,27 +5,34 @@ import io.github.dsheirer.sample.complex.Complex;
public class ComplexGain implements Listener<Complex>
{
private float mGain;
private Listener<Complex> mListener;
private float mGain;
private Listener<Complex> mListener;
public ComplexGain( float gain )
{
mGain = gain;
}
@Override
public void receive( Complex sample )
{
if( mListener != null )
{
sample.multiply( mGain );
mListener.receive( sample );
}
}
public ComplexGain(float gain)
{
mGain = gain;
}
public void setListener( Listener<Complex> listener )
{
mListener = listener;
}
public Complex apply(Complex sample)
{
sample.multiply(mGain);
return sample;
}
@Override
public void receive(Complex sample)
{
if(mListener != null)
{
apply(sample);
mListener.receive(sample);
}
}
public void setListener(Listener<Complex> listener)
{
mListener = listener;
}
}

3
src/main/java/io/github/dsheirer/dsp/mixer/Oscillator.java
View File

@@ -51,8 +51,7 @@ public class Oscillator
*/
private void update()
{
float anglePerSample =
(float)( 2.0d * Math.PI * mFrequency / mSampleRate );
float anglePerSample = (float)( 2.0d * Math.PI * mFrequency / mSampleRate );
mAnglePerSample = Complex.fromAngle( anglePerSample );
}

162
src/main/java/io/github/dsheirer/dsp/psk/DQPSKDemodulator.java Normal file
View File

@@ -0,0 +1,162 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk;
import io.github.dsheirer.dsp.psk.pll.IPhaseLockedLoop;
import io.github.dsheirer.dsp.symbol.Dibit;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.complex.Complex;
import io.github.dsheirer.sample.complex.ComplexBuffer;
import io.github.dsheirer.sample.complex.ComplexSampleListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class DQPSKDemodulator implements ComplexSampleListener
{
private final static Logger mLog = LoggerFactory.getLogger(DQPSKDemodulator.class);
protected InterpolatingSampleBuffer mInterpolatingSampleBuffer;
protected IPhaseLockedLoop mPLL;
protected DQPSKSymbolEvaluator mSymbolEvaluator = new DQPSKSymbolEvaluator();
private Complex mReceivedSample = new Complex(0, 0);
private Complex mPreviousPrecedingSample = new Complex(0, 0);
private Complex mPreviousCurrentSample = new Complex(0, 0);
private Complex mPrecedingSample = new Complex(0, 0);
private Complex mCurrentSample = new Complex(0, 0);
private Complex mPrecedingSymbol = new Complex(0, 0);
protected Complex mCurrentSymbol = new Complex(0, 0);
private Listener<Dibit> mDibitListener;
/**
* Decoder for Differential Quaternary Phase Shift Keying (DQPSK). This decoder uses both a Costas Loop (PLL) and
* a custom DQPSK symbol timing error detector to automatically align to the incoming carrier frequency and to
* adjust for any changes in symbol timing.
*
* This detector is optimized for constant amplitude DQPSK symbols like C4FM.
*
* @param phaseLockedLoop for tracking carrier frequency error
* @param interpolatingSampleBuffer to hold samples for interpolating a symbol
*/
public DQPSKDemodulator(IPhaseLockedLoop phaseLockedLoop, InterpolatingSampleBuffer interpolatingSampleBuffer)
{
mPLL = phaseLockedLoop;
mInterpolatingSampleBuffer = interpolatingSampleBuffer;
}
/**
* Processes a (filtered) buffer containing complex samples for decoding
* @param complexBuffer with complex samples
*/
public void receive(ComplexBuffer complexBuffer)
{
float[] samples = complexBuffer.getSamples();
for(int x = 0; x < samples.length; x += 2)
{
receive(samples[x], samples[x + 1]);
}
}
/**
* Processes a complex sample for decoding. Once sufficient samples are buffered, a symbol decision is made.
* @param inphase value for the sample
* @param quadrature value for the sample
*/
@Override
public void receive(float inphase, float quadrature)
{
//Update current sample with values
mReceivedSample.setValues(inphase, quadrature);
//Mix current sample with costas loop to remove any rotation that is present from a mis-tuned carrier frequency
mReceivedSample.multiply(mPLL.incrementAndGetCurrentVector());
//Store the sample in the interpolating buffer
mInterpolatingSampleBuffer.receive(mReceivedSample);
//Calculate the symbol once we've stored enough samples
if(mInterpolatingSampleBuffer.hasSymbol())
{
calculateSymbol();
}
}
/**
* Calculates a symbol from the interpolating buffer
*/
protected void calculateSymbol()
{
//Get preceding sample and an interpolated current sample from the interpolating buffer
mPrecedingSample = mInterpolatingSampleBuffer.getPrecedingSample();
mCurrentSample = mInterpolatingSampleBuffer.getCurrentSample();
//Calculate preceding, current and following symbols as the delta rotation compared to the previous samples
mPrecedingSymbol.setInphase(Complex.multiplyInphase(mPrecedingSample.inphase(), mPrecedingSample.quadrature(),
mPreviousPrecedingSample.inphase(), -mPreviousPrecedingSample.quadrature()));
mPrecedingSymbol.setQuadrature(Complex.multiplyQuadrature(mPrecedingSample.inphase(), mPrecedingSample.quadrature(),
mPreviousPrecedingSample.inphase(), -mPreviousPrecedingSample.quadrature()));
mCurrentSymbol.setInphase(Complex.multiplyInphase(mCurrentSample.inphase(), mCurrentSample.quadrature(),
mPreviousCurrentSample.inphase(), -mPreviousCurrentSample.quadrature()));
mCurrentSymbol.setQuadrature(Complex.multiplyQuadrature(mCurrentSample.inphase(), mCurrentSample.quadrature(),
mPreviousCurrentSample.inphase(), -mPreviousCurrentSample.quadrature()));
//Set gain to unity before we calculate the error value
mPrecedingSymbol.normalize();
mCurrentSymbol.normalize();
mSymbolEvaluator.setSymbol(mPrecedingSymbol, mCurrentSymbol);
mInterpolatingSampleBuffer.resetAndAdjust(mSymbolEvaluator.getTimingError());
//Store current samples/symbols to use for the next period
mPreviousPrecedingSample.setValues(mPrecedingSample);
mPreviousCurrentSample.setValues(mCurrentSample);
//Calculate the phase error of the current symbol relative to the expected constellation and provide
//feedback to the PLL
mPLL.adjust(clip(mSymbolEvaluator.getPhaseError(), 0.5f));
if(mDibitListener != null)
{
mDibitListener.receive(mSymbolEvaluator.getSymbolDecision());
}
}
/**
* Registers the listener to receive dibit symbol decisions from this demodulator
*/
public void setDibitListener(Listener<Dibit> listener)
{
mDibitListener = listener;
}
/**
* Constrains value to the range of ( -maximum <> maximum )
*/
public static float clip(float value, float maximum)
{
if(value > maximum)
{
return maximum;
}
else if(value < -maximum)
{
return -maximum;
}
return value;
}
}

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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk;
import io.github.dsheirer.dsp.psk.pll.CostasLoop;
import io.github.dsheirer.dsp.psk.pll.IPhaseLockedLoop;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.complex.Complex;
public class DQPSKDemodulatorInstrumented extends DQPSKDemodulator
{
private Listener<SymbolDecisionData> mSymbolDecisionDataListener;
private Listener<Double> mSamplesPerSymbolListener;
private Listener<Complex> mSymbolListener;
private Listener<Double> mPLLErrorListener;
private Listener<Double> mPLLFrequencyListener;
private double mSampleRate;
/**
* Decoder for Differential Quaternary Phase Shift Keying (DQPSK). This decoder uses both a Costas Loop (PLL) and
* a custom DQPSK symbol timing error detector to automatically align to the incoming carrier frequency and to
* adjust for any changes in symbol timing.
*
* This detector is optimized for constant amplitude DQPSK symbols like C4FM.
*
* @param phaseLockedLoop for tracking carrier frequency error
* @param interpolatingSampleBuffer
* @param sampleRate of the incoming complex sample stream
*/
public DQPSKDemodulatorInstrumented(IPhaseLockedLoop phaseLockedLoop,
InterpolatingSampleBufferInstrumented interpolatingSampleBuffer,
double sampleRate)
{
super(phaseLockedLoop, interpolatingSampleBuffer);
mSampleRate = sampleRate;
}
/**
* Overrides the parent class symbol calculation to capture eye diagram data
*/
protected void calculateSymbol()
{
//Eye diagram listener
if(mSymbolDecisionDataListener != null)
{
mSymbolDecisionDataListener.receive(
((InterpolatingSampleBufferInstrumented)mInterpolatingSampleBuffer).getSymbolDecisionData());
}
super.calculateSymbol();
if(mSamplesPerSymbolListener != null)
{
mSamplesPerSymbolListener.receive((double)mInterpolatingSampleBuffer.getSamplingPoint());
}
//Send to an external constellation symbol listener when registered
if(mSymbolListener != null)
{
mSymbolListener.receive(mCurrentSymbol);
}
if(mPLLErrorListener != null)
{
mPLLErrorListener.receive((double)mSymbolEvaluator.getPhaseError());
}
if(mPLLFrequencyListener != null)
{
double loopFrequency = ((CostasLoop)mPLL).getLoopFrequency();
loopFrequency *= mSampleRate / (2.0 * Math.PI);
mPLLFrequencyListener.receive(loopFrequency);
}
}
/**
* Registers a listener to receive symbol decision data to produce an eye diagram.
*/
public void setSymbolDecisionDataListener(Listener<SymbolDecisionData> listener)
{
mSymbolDecisionDataListener = listener;
}
/**
* Registers the listener to receive PLL error values
*/
public void setSamplesPerSymbolListener(Listener<Double> listener)
{
mSamplesPerSymbolListener = listener;
}
/**
* Registers the listener to receive decoded QPSK symbols
*/
public void setSymbolListener(Listener<Complex> listener)
{
mSymbolListener = listener;
}
/**
* Registers the listener to receive PLL error values
*/
public void setPLLErrorListener(Listener<Double> listener)
{
mPLLErrorListener = listener;
}
/**
* Registers the listener to receive PLL error values
*/
public void setPLLFrequencyListener(Listener<Double> listener)
{
mPLLFrequencyListener = listener;
}
}

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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk;
import io.github.dsheirer.dsp.symbol.Dibit;
import io.github.dsheirer.sample.complex.Complex;
public class DQPSKSymbolEvaluator implements IDQPSKSymbolEvaluator
{
private static final Complex ROTATE_FROM_PLUS_135 = Complex.fromAngle(-3.0 * Math.PI / 4.0);
private static final Complex ROTATE_FROM_PLUS_45 = Complex.fromAngle(-1.0 * Math.PI / 4.0);
private static final Complex ROTATE_FROM_MINUS_45 = Complex.fromAngle(1.0 * Math.PI / 4.0);
private static final Complex ROTATE_FROM_MINUS_135 = Complex.fromAngle(3.0 * Math.PI / 4.0);
private Complex mSymbolError = new Complex(0, 0);
private float mPhaseError = 0.0f;
private float mTimingError = 0.0f;
private float mTimingErrorPolarity = 1.0f;
private Dibit mSymbolDecision = Dibit.D00_PLUS_1;
/**
* Decision-directed symbol phase and timing error detector and symbol decision slicer.
*
* Symbol decision is based on the closest reference quadrant for the sampled symbol.
*
* Phase and timing error are calculated as the angular distance of the sampled symbol from the reference
* symbol. Timing error is further corrected to compensate for clock-wise or counter-clock-wise vector rotation
* relative to the immediately preceding symbol.
*/
public DQPSKSymbolEvaluator()
{
}
/**
* Sets the preceding and current symbols to be evaluated for phase and timing errors and to determine the
* transmitted symbol relative to the closest reference symbol. After invoking this method, you can access the
* phase and timing errors and the symbol decision via their respective accessor methods.
*
* Phase and timing error values are calculated by first determining the symbol and then calculating the phase
* and timing errors relative to the reference symbol. The timing error is corrected with the appropriate sign
* relative to the angular vector rotation so that the error value indicates the correct error direction.
*
* @param preceding differential-decoded sample/symbol used to detect rotation - does NOT need to be interpolated
* since it's only a reference
* @param current symbol to be evaluated - interpolated
*/
@Override
public void setSymbol(Complex preceding, Complex current)
{
mSymbolError.setValues(current);
if(mSymbolError.quadrature() > 0.0f)
{
if(mSymbolError.inphase() > 0.0f)
{
mSymbolDecision = Dibit.D00_PLUS_1;
mTimingErrorPolarity = (preceding.quadrature() > current.quadrature() ? 1.0f : -1.0f);
mSymbolError.multiply(ROTATE_FROM_PLUS_45);
}
else
{
mSymbolDecision = Dibit.D01_PLUS_3;
mTimingErrorPolarity = (preceding.quadrature() < current.quadrature() ? 1.0f : -1.0f);
mSymbolError.multiply(ROTATE_FROM_PLUS_135);
}
}
else
{
if(mSymbolError.inphase() > 0.0f)
{
mSymbolDecision = Dibit.D10_MINUS_1;
mTimingErrorPolarity = (preceding.quadrature() > current.quadrature() ? 1.0f : -1.0f);
mSymbolError.multiply(ROTATE_FROM_MINUS_45);
}
else
{
mSymbolDecision = Dibit.D11_MINUS_3;
mTimingErrorPolarity = (preceding.quadrature() < current.quadrature() ? 1.0f : -1.0f);
mSymbolError.multiply(ROTATE_FROM_MINUS_135);
}
}
//Since we've rotated the error symbol back to 0 radians, the quadrature value closely approximates the
//arctan of the error angle relative to 0 radians and this provides our error value
mPhaseError = -mSymbolError.quadrature();
//Timing error is the same as phase error with the sign corrected according to the vector's angular rotation
mTimingError = mSymbolError.quadrature() * mTimingErrorPolarity;
}
/**
* Phase error of the symbol relative to the nearest reference symbol.
*
* @return phase error in radians of distance from the reference symbol.
*/
@Override
public float getPhaseError()
{
return mPhaseError;
}
/**
* Timing error of the symbol relative to the nearest reference symbol.
*
* @return timing error in radians of angular distance from the reference symbol recognizing that the symbol
* originates at zero radians and rotates toward the intended reference symbol, therefore the error value indicates
* if the symbol was sampled early (-) or late (+) relative to the reference symbol.
*/
@Override
public float getTimingError()
{
return mTimingError;
}
/**
* Reference symbol that is closest to the transmitted/sampled symbol.
*/
@Override
public Dibit getSymbolDecision()
{
return mSymbolDecision;
}
}

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src/main/java/io/github/dsheirer/dsp/psk/GardnerDetector.java Normal file
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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk;
import io.github.dsheirer.sample.complex.Complex;
public class GardnerDetector
{
private float mErrorInphase;
private float mErrorQuadrature;
private float mError;
/**
* Gardner detector for recovering symbol timing error.
*/
public GardnerDetector()
{
}
/**
* Calculates the symbol timing error by evaluating the previous, middle and current symbol instants.
*
* @param previous symbol
* @param middle symbol (ie midway between the previous and current)
* @param current symbol
* @return symbol timing error
*/
public float getError(Complex previous, Complex middle, Complex current)
{
mErrorInphase = (Math.abs(previous.inphase()) - Math.abs(current.inphase())) * Math.abs(middle.inphase());
mErrorQuadrature = (Math.abs(previous.quadrature()) - Math.abs(current.quadrature())) * Math.abs(middle.quadrature());
mError = normalize(mErrorInphase + mErrorQuadrature, 1.0f);
return mError;
}
/**
* Constrains timing error to +/- the maximum value and corrects any floating point invalid numbers
*/
public static float normalize(float error, float maximum)
{
if(Float.isNaN(error))
{
return 0.0f;
}
else
{
return clip(error, maximum);
}
}
/**
* Constrains value to the range of ( -maximum <> maximum )
*/
public static float clip(float value, float maximum)
{
if(value > maximum)
{
return maximum;
}
else if(value < -maximum)
{
return -maximum;
}
return value;
}
}

50
src/main/java/io/github/dsheirer/dsp/psk/IDQPSKSymbolEvaluator.java Normal file
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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk;
import io.github.dsheirer.dsp.symbol.Dibit;
import io.github.dsheirer.sample.complex.Complex;
public interface IDQPSKSymbolEvaluator
{
/**
* Sets the sampled symbol to be evaluated. Note: the symbol's gain value MUST be normalized to the unit circle.
*
* @param preceding symbol used to detect (counter-)clock-wise rotation
* @param symbol currently being sampled
*/
void setSymbol(Complex preceding, Complex symbol);
/**
* Phase error of the symbol relative to the closest reference symbol
* @return angular phase error in radians
*/
float getPhaseError();
/**
* Timing error of the symbol relative to the closest reference symbol
* @return angular timing error in radians where a positive value indicates early sampling and sample timing needs
* to be increased and a negative value indicates late sampling where sample timing needs to be decreased.
*/
float getTimingError();
/**
* Dibit decision indicating the reference symbol location closest to the symbol.
* @return symbol decision
*/
Dibit getSymbolDecision();
}

29
src/main/java/io/github/dsheirer/dsp/psk/IQPSKSymbolDecoder.java Normal file
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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk;
import io.github.dsheirer.dsp.symbol.Dibit;
import io.github.dsheirer.sample.complex.Complex;
public interface IQPSKSymbolDecoder
{
/**
* Decodes the symbol and converts it into a Dibit
* @param symbol to decode
* @return decoded dibit
*/
Dibit decode(Complex symbol);
}

28
src/main/java/io/github/dsheirer/dsp/psk/ISymbolPhaseErrorCalculator.java Normal file
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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk;
import io.github.dsheirer.sample.complex.Complex;
public interface ISymbolPhaseErrorCalculator
{
/**
* Calculates the phase error of the symbol relative to an alignment for the constellation
* @param symbol to calculate error
* @return error value
*/
float getPhaseError(Complex symbol);
}

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src/main/java/io/github/dsheirer/dsp/psk/InterpolatingSampleBuffer.java Normal file
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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk;
import io.github.dsheirer.dsp.filter.interpolator.RealInterpolator;
import io.github.dsheirer.sample.complex.Complex;
public class InterpolatingSampleBuffer
{
private static final float MAXIMUM_DEVIATION_SAMPLES_PER_SYMBOL = 0.02f; // +/- 2% deviation
private Complex mPrecedingSample = new Complex(0,0);
private Complex mCurrentSample = new Complex(0,0);
private float[] mDelayLineInphase;
private float[] mDelayLineQuadrature;
private int mDelayLinePointer = 0;
private int mTwiceSamplesPerSymbol;
private float mSamplingPoint;
private float mSampleCounterGain = 1.0f;
private float mDetectedSamplesPerSymbol;
private float mDetectedSamplesPerSymbolGain = 0.1f * mSampleCounterGain * mSampleCounterGain;
private float mMaximumSamplesPerSymbol;
private float mMinimumSamplesPerSymbol;
private RealInterpolator mInterpolator = new RealInterpolator(1.0f);
/**
* Buffer to store complex sample data and produce interpolated samples.
* @param samplesPerSymbol
*/
public InterpolatingSampleBuffer(float samplesPerSymbol)
{
mSamplingPoint = samplesPerSymbol;
mDetectedSamplesPerSymbol = samplesPerSymbol;
mMaximumSamplesPerSymbol = samplesPerSymbol * (1.0f + MAXIMUM_DEVIATION_SAMPLES_PER_SYMBOL);
mMinimumSamplesPerSymbol = samplesPerSymbol * (1.0f - MAXIMUM_DEVIATION_SAMPLES_PER_SYMBOL);
mTwiceSamplesPerSymbol = (int)Math.floor(2.0 * samplesPerSymbol);
mDelayLineInphase = new float[2 * mTwiceSamplesPerSymbol];
mDelayLineQuadrature = new float[2 * mTwiceSamplesPerSymbol];
}
/**
* Stores the sample in the buffer and updates pointers.
* @param sample
*/
public void receive(Complex sample)
{
mSamplingPoint--;
//Fill up the delay line to use with the interpolator
mDelayLineInphase[mDelayLinePointer] = sample.inphase();
mDelayLineInphase[mDelayLinePointer + mTwiceSamplesPerSymbol] = sample.inphase();
mDelayLineQuadrature[mDelayLinePointer] = sample.quadrature();
mDelayLineQuadrature[mDelayLinePointer + mTwiceSamplesPerSymbol] = sample.quadrature();
//Increment pointer and keep pointer in bounds
mDelayLinePointer++;
mDelayLinePointer = mDelayLinePointer % mTwiceSamplesPerSymbol;
}
/**
* Updates the internal sample counter with additional samples to add to the symbol sample counter.
* @param samplesToAdd to the sample counter
*/
public void increaseSampleCounter(float samplesToAdd)
{
mSamplingPoint += samplesToAdd;
}
/**
* Adjusts samples per symbol and symbol timing counters and increments the sample counter to collect another
* symbol.
*
* @param symbolTimingError from a symbol timing error detector
*/
public void resetAndAdjust(float symbolTimingError)
{
//Adjust detected samples per symbol based on timing error
mDetectedSamplesPerSymbol = mDetectedSamplesPerSymbol + (symbolTimingError * mDetectedSamplesPerSymbolGain);
//Constrain detected samples per symbol to min/max values
if(mDetectedSamplesPerSymbol > mMaximumSamplesPerSymbol)
{
mDetectedSamplesPerSymbol = mMaximumSamplesPerSymbol;
}
if(mDetectedSamplesPerSymbol < mMinimumSamplesPerSymbol)
{
mDetectedSamplesPerSymbol = mMinimumSamplesPerSymbol;
}
//Add another symbol's worth of samples to the counter and adjust timing based on gardner error
increaseSampleCounter((mDetectedSamplesPerSymbol + (symbolTimingError * mSampleCounterGain)));
}
/**
* Current value of the detected samples per symbol
*/
public float getSamplingPoint()
{
return mSamplingPoint;
}
/**
* Indicates if this buffer has accumulated a enough samples to represent a full symbol
*/
public boolean hasSymbol()
{
return mSamplingPoint < 1.0f;
}
/**
* Un-interpolated sample that precedes the current interpolated sampling point. The current sampling point falls
* somewhere between sample index 3 and index 4, therefore the preceding sample is located at index 3.
*/
public Complex getPrecedingSample()
{
mPrecedingSample.setValues(mDelayLineInphase[mDelayLinePointer + 4], mDelayLineQuadrature[mDelayLinePointer + 3]);
return mPrecedingSample;
}
/**
* Interpolated middle sample for the symbol. Note: this method should only be invoked after testing for a
* complete symbol with the hasSymbol() method.
*/
public Complex getCurrentSample()
{
/* Calculate interpolated current sample */
mCurrentSample.setValues(getInphase(mSamplingPoint), getQuadrature(mSamplingPoint));
return mCurrentSample;
}
/**
* Returns the interpolated inphase value for the specified offset
* @param interpolation into the buffer to calculate the interpolated sample
* @return inphase value of the interpolated sample
*/
public float getInphase(float interpolation)
{
return mInterpolator.filter(mDelayLineInphase, mDelayLinePointer + 1, interpolation);
}
/**
* Returns the interpolated quadrature value for the specified offset
* @param interpolation into the buffer to calculate the interpolated sample
* @return quadrature value of the interpolated sample
*/
public float getQuadrature(float interpolation)
{
return mInterpolator.filter(mDelayLineQuadrature, mDelayLinePointer + 1, interpolation);
}
}

48
src/main/java/io/github/dsheirer/dsp/psk/InterpolatingSampleBufferInstrumented.java Normal file
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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk;
import io.github.dsheirer.sample.complex.Complex;
public class InterpolatingSampleBufferInstrumented extends InterpolatingSampleBuffer
{
private SymbolDecisionData mSymbolDecisionData;
public InterpolatingSampleBufferInstrumented(float samplesPerSymbol)
{
super(samplesPerSymbol);
mSymbolDecisionData = new SymbolDecisionData((int)samplesPerSymbol);
}
public void receive(Complex sample)
{
super.receive(sample);
mSymbolDecisionData.receive(sample);
}
/**
* Contents of the interpolating buffer and the current buffer index and symbol decision offset. This data can
* be used to support an external eye-diagram chart.
* @return symbol decision data.
*/
public SymbolDecisionData getSymbolDecisionData()
{
mSymbolDecisionData.setSamplingPoint(getSamplingPoint());
return mSymbolDecisionData;
}
}

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src/main/java/io/github/dsheirer/dsp/psk/LSMConstellationDecoder.java Normal file
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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk;
import io.github.dsheirer.dsp.symbol.Dibit;
import io.github.dsheirer.sample.complex.Complex;
public class LSMConstellationDecoder implements IQPSKSymbolDecoder
{
@Override
public Dibit decode(Complex symbol)
{
return null;
}
}

957
src/main/java/io/github/dsheirer/dsp/psk/LSMDemodulator.java
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File diff suppressed because it is too large Load Diff

105
src/main/java/io/github/dsheirer/dsp/psk/QPSKStarSlicer.java
View File

@@ -1,3 +1,18 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk;
import io.github.dsheirer.dsp.symbol.Dibit;
@@ -5,54 +20,54 @@ import io.github.dsheirer.sample.Broadcaster;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.complex.Complex;
public class QPSKStarSlicer implements Listener<Complex>
public class QPSKStarSlicer implements IQPSKSymbolDecoder, Listener<Complex>
{
private Broadcaster<Dibit> mBroadcaster = new Broadcaster<Dibit>();
private Broadcaster<Dibit> mBroadcaster = new Broadcaster<Dibit>();
/**
* Slices a ComplexSample representing a phase shifted symbol according to
* the following constellation pattern:
*
* 00 | 01
* ---|---
* 10 | 11
*/
public QPSKStarSlicer()
{
}
public void dispose()
{
mBroadcaster.dispose();
mBroadcaster = null;
}
/**
* Slices a Complex sample representing a phase shifted symbol according to the following constellation pattern:
*
* 00 +3 | 01 +1
* ------|------
* 10 -1 | 11 -1
*/
public QPSKStarSlicer()
{
}
public void addListener( Listener<Dibit> listener )
{
mBroadcaster.addListener( listener );
}
public void dispose()
{
mBroadcaster.dispose();
mBroadcaster = null;
}
public void removeListener( Listener<Dibit> listener )
{
mBroadcaster.removeListener( listener );
}
public void addListener(Listener<Dibit> listener)
{
mBroadcaster.addListener(listener);
}
public void removeListener(Listener<Dibit> listener)
{
mBroadcaster.removeListener(listener);
}
@Override
public void receive(Complex sample)
{
mBroadcaster.broadcast(decode(sample));
}
@Override
public Dibit decode(Complex sample)
{
if(sample.inphase() > 0)
{
return sample.quadrature() > 0 ? Dibit.D00_PLUS_1 : Dibit.D10_MINUS_1;
}
else
{
return sample.quadrature() > 0 ? Dibit.D01_PLUS_3 : Dibit.D11_MINUS_3;
}
}
@Override
public void receive( Complex sample )
{
mBroadcaster.broadcast( decide( sample ) );
}
public static Dibit decide( Complex sample )
{
if( sample.inphase() > 0 )
{
return sample.quadrature() > 0 ? Dibit.D00_PLUS_1 : Dibit.D10_MINUS_1;
}
else
{
return sample.quadrature() > 0 ? Dibit.D01_PLUS_3 : Dibit.D11_MINUS_3;
}
}
}

40
src/main/java/io/github/dsheirer/dsp/psk/QPSKPolarSlicer.java → src/main/java/io/github/dsheirer/dsp/psk/QPSKSymbolDecoder.java
View File

@@ -1,3 +1,18 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk;
import io.github.dsheirer.dsp.symbol.Dibit;
@@ -5,24 +20,7 @@ import io.github.dsheirer.sample.Broadcaster;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.complex.Complex;
/*******************************************************************************
* SDR Trunk
* Copyright (C) 2014,2015 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/>
******************************************************************************/
public class QPSKPolarSlicer implements Listener<Complex>
public class QPSKSymbolDecoder implements Listener<Complex>, IQPSKSymbolDecoder
{
private Broadcaster<Dibit> mBroadcaster = new Broadcaster<Dibit>();
@@ -37,7 +35,7 @@ public class QPSKPolarSlicer implements Listener<Complex>
* / \
* / 11 \
*/
public QPSKPolarSlicer()
public QPSKSymbolDecoder()
{
}
@@ -60,10 +58,10 @@ public class QPSKPolarSlicer implements Listener<Complex>
@Override
public void receive( Complex complex )
{
mBroadcaster.broadcast( decide( complex ) );
mBroadcaster.broadcast( decode( complex ) );
}
public static Dibit decide( Complex complex )
public Dibit decode(Complex complex )
{
if( Math.abs( complex.inphase() ) > Math.abs( complex.quadrature() ) )
{

57
src/main/java/io/github/dsheirer/dsp/psk/QPSKSymbolPhaseErrorCalculator.java Normal file
View File

@@ -0,0 +1,57 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk;
import io.github.dsheirer.sample.complex.Complex;
/**
* Calculates the phase error for a QPSK polar-orientation constellation
*/
public class QPSKSymbolPhaseErrorCalculator implements ISymbolPhaseErrorCalculator
{
private float mPhaseError;
@Override
public float getPhaseError(Complex symbol)
{
mPhaseError = 0.0f;
if(Math.abs(symbol.inphase()) > Math.abs(symbol.quadrature()))
{
if(symbol.inphase() > 0)
{
mPhaseError = -symbol.quadrature();
}
else
{
mPhaseError = symbol.quadrature();
}
}
else
{
if(symbol.quadrature() > 0)
{
mPhaseError = symbol.inphase();
}
else
{
mPhaseError = -symbol.inphase();
}
}
return mPhaseError;
}
}

93
src/main/java/io/github/dsheirer/dsp/psk/SymbolDecisionData.java Normal file
View File

@@ -0,0 +1,93 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk;
import io.github.dsheirer.buffer.ComplexCircularBuffer;
import io.github.dsheirer.sample.complex.Complex;
public class SymbolDecisionData
{
//45 degrees rotation to orient the symbol to a polar axis to make error calculation easy/efficient
public static final Complex DIFFERENTIAL_OFFSET = Complex.fromAngle(Math.PI / 4.0d);
private ComplexCircularBuffer mBuffer;
private float mSamplingPoint;
/**
* Circular buffer for capturing two symbols worth of sample data for use in instrumentation.
* @param samplesPerSymbol to size the buffer
*/
public SymbolDecisionData(int samplesPerSymbol)
{
mBuffer = new ComplexCircularBuffer(2 * samplesPerSymbol);
}
/**
* Stores the complex sample in the buffer
*/
public void receive(float inphase, float quadrature)
{
mBuffer.put(new Complex(inphase, quadrature));
}
/**
* Stores the complex sample in the buffer
*/
public void receive(Complex complex)
{
mBuffer.put(complex.copy());
}
/**
* Sets the fractional sampling point for the current symbol to use in interpolating the current symbol.
*/
public void setSamplingPoint(float samplingPoint)
{
mSamplingPoint = samplingPoint;
}
/**
* Fractional sampling point
*/
public float getSamplingPoint()
{
return mSamplingPoint;
}
/**
* Array of demodulated samples representing the current symbol where each current sample is demodulated against
* the previous symbol's sample to produce the differential demodulated sample. Samples are in time order.
*
* Note: differential decoding is on an integral samples-per-symbol basis and does not use fractional interpolation.
*/
public Complex[] getDemodulated()
{
Complex[] samples = mBuffer.getAll();
int length = samples.length / 2;
Complex[] demodulated = new Complex[length];
for(int x = 0; x < samples.length / 2; x++)
{
Complex copy = samples[length + x].copy();
copy.multiply(samples[x].conjugate());
demodulated[x] = copy;
}
return demodulated;
}
}

35
src/main/java/io/github/dsheirer/dsp/psk/SymbolInversion.java Normal file
View File

@@ -0,0 +1,35 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk;
public enum SymbolInversion
{
DEGREES_90_PLUS(Math.PI / 2.0),
DEGREES_90_MINUS(Math.PI / -2.0),
DEGREES_180(Math.PI);
private double mAngleRadians;
SymbolInversion(double angleRadians)
{
mAngleRadians = angleRadians;
}
public double getError()
{
return mAngleRadians;
}
}

182
src/main/java/io/github/dsheirer/dsp/psk/pll/CostasLoop.java Normal file
View File

@@ -0,0 +1,182 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk.pll;
import io.github.dsheirer.sample.complex.Complex;
/**
* Costas Loop - phase locked loop designed to automatically synchronize to the incoming carrier frequency in order to
* zeroize any frequency offset inherent in the signal due to either mis-tuning or carrier frequency drift.
*
* Costas loop structure was modeled from KA1RBI's OP25/cqpsk.py
*
* Loop bandwidth and alpha/beta gain formulas derived from:
* http://www.trondeau.com/blog/2011/8/13/control-loop-gain-values.html
*/
public class CostasLoop implements IPhaseLockedLoop
{
public static final double TWO_PI = 2.0 * Math.PI;
private Complex mCurrentVector = new Complex(0, 0);
private double mLoopPhase = 0.0;
private double mLoopFrequency = 0.0;
private double mMaximumLoopFrequency;
private double mDamping = Math.sqrt(2.0) / 2.0;
private double mAlphaGain;
private double mBetaGain;
private Tracking mTracking = Tracking.NORMAL;
/**
* Costas Loop for tracking and correcting frequency error in a received carrier signal.
*
* @param sampleRate of the incoming samples
* @param symbolRate of the digital signal
*/
public CostasLoop(double sampleRate, double symbolRate)
{
mMaximumLoopFrequency = TWO_PI * (symbolRate / 2.0) / sampleRate;
updateLoopBandwidth();
}
/**
* Corrects the current phase tracker when an inverted output is detected. The inversion will take the form of
* +/- 90 degrees or +/- 180 degrees, although the latter correction is equal regardless of the sign.
*
* If the supplied correction value places the loop frequency outside of the max frequency, then the frequency will
* be corrected 360 degrees in the opposite direction to maintain within the max frequency bounds.
*
* @param correction as measured in radians
*/
public void correctInversion(double correction)
{
mLoopFrequency += correction;
while(mLoopFrequency > mMaximumLoopFrequency)
{
mLoopFrequency -= 2.0 * mMaximumLoopFrequency;
}
while(mLoopFrequency < -mMaximumLoopFrequency)
{
mLoopFrequency += 2.0 * mMaximumLoopFrequency;
}
}
/**
* Updates the loop bandwidth and alpha/beta gains according to the current loop synchronization state.
*/
private void updateLoopBandwidth()
{
double bandwidth = TWO_PI / mTracking.getLoopBandwidth();
mAlphaGain = (4.0 * mDamping * bandwidth) / (1.0 + (2.0 * mDamping * bandwidth) + (bandwidth * bandwidth));
mBetaGain = (4.0 * bandwidth * bandwidth) / (1.0 + (2.0 * mDamping * bandwidth) + (bandwidth * bandwidth));
}
/**
* Sets the tracking state for this costas loop. The tracking state affects the aggressiveness of the alpha/beta
* gain values in synchronizing with the signal carrier.
*
* @param tracking
*/
public void setTracking(Tracking tracking)
{
mTracking = tracking;
updateLoopBandwidth();
}
/**
* Increments the phase of the loop for each sample received at the sample rate.
*/
public void increment()
{
mLoopPhase += mLoopFrequency;
/* Normalize phase between +/- 2 * PI */
if(mLoopPhase > TWO_PI)
{
mLoopPhase -= TWO_PI;
}
if(mLoopPhase < -TWO_PI)
{
mLoopPhase += TWO_PI;
}
}
/**
* Current vector of the loop. Note: this value is updated for the current angle in radians each time this method
* is invoked.
*/
public Complex getCurrentVector()
{
mCurrentVector.setAngle(mLoopPhase);
return mCurrentVector;
}
@Override
public Complex incrementAndGetCurrentVector()
{
increment();
return getCurrentVector();
}
public double getLoopFrequency()
{
return mLoopFrequency;
}
/**
* Updates the costas loop frequency and phase to adjust for the phase
* error value
*
* @param phaseError - (-)= late and (+)= early
*/
public void adjust(double phaseError)
{
mLoopFrequency += (mBetaGain * phaseError);
mLoopPhase += mLoopFrequency + (mAlphaGain * phaseError);
/* Normalize phase between +/- 2 * PI */
if(mLoopPhase > TWO_PI)
{
mLoopPhase -= TWO_PI;
}
if(mLoopPhase < -TWO_PI)
{
mLoopPhase += TWO_PI;
}
/* Limit frequency to +/- maximum loop frequency */
if(mLoopFrequency > mMaximumLoopFrequency)
{
mLoopFrequency = mMaximumLoopFrequency;
}
if(mLoopFrequency < -mMaximumLoopFrequency)
{
mLoopFrequency = -mMaximumLoopFrequency;
}
}
@Override
public void reset()
{
mLoopPhase = 0.0;
mLoopFrequency = 0.0;
}
}

59
src/main/java/io/github/dsheirer/dsp/psk/pll/IPhaseLockedLoop.java Normal file
View File

@@ -0,0 +1,59 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk.pll;
import io.github.dsheirer.sample.complex.Complex;
/**
* Phase-Locked Loop (PLL) interface
*/
public interface IPhaseLockedLoop
{
/**
* Increments the PLL by one sample period
*/
void increment();
/**
* Applies an error value to the PLL.
*
* @param error value in the range of -PI <> +PI
*/
void adjust(double error);
/**
* Adjusts the current phase of the loop to account for +/-90 or 180 degree inverted phase locks when detected
* @param correction to apply to the phase of the loop
*/
void correctInversion(double correction);
/**
* Current vector of the PLL to use in de-spinning the incoming samples.
* @return complex vector
*/
Complex getCurrentVector();
/**
* Increments the phase rotation and gets the current vector of the PLL to use in de-spinning the incoming samples.
* @return complex vector
*/
Complex incrementAndGetCurrentVector();
/**
* Reset tracking to 0
*/
void reset();
}

42
src/main/java/io/github/dsheirer/dsp/psk/pll/Tracking.java Normal file
View File

@@ -0,0 +1,42 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.dsp.psk.pll;
/**
* Phase Locked Loop (PLL) tracking bandwidth - controls how fast/slow the PLL tracks the carrier frequency
*/
public enum Tracking
{
FASTEST(50.0),
FAST(100.0),
NORMAL(200.0),
SLOW(400.0);
private double mLoopBandwidth;
Tracking(double loopBandwidth)
{
mLoopBandwidth = loopBandwidth;
}
/**
* Loop bandwidth setting
*/
public double getLoopBandwidth()
{
return mLoopBandwidth;
}
}

41
src/main/java/io/github/dsheirer/instrument/gui/DecoderSelectionFrame.java
View File

@@ -2,15 +2,19 @@ package io.github.dsheirer.instrument.gui;
import io.github.dsheirer.alias.AliasModel;
import io.github.dsheirer.audio.broadcast.BroadcastModel;
import io.github.dsheirer.controller.channel.Channel;
import io.github.dsheirer.controller.channel.ChannelModel;
import io.github.dsheirer.controller.channel.map.ChannelMapModel;
import io.github.dsheirer.module.decode.DecodeConfigurationEditor;
import io.github.dsheirer.module.decode.config.DecodeConfiguration;
import io.github.dsheirer.playlist.PlaylistManager;
import io.github.dsheirer.source.IControllableFileSource;
import net.miginfocom.swing.MigLayout;
import javax.swing.*;
import java.awt.*;
import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JInternalFrame;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
@@ -18,14 +22,14 @@ public class DecoderSelectionFrame extends JInternalFrame
{
private static final long serialVersionUID = 1L;
private Channel mChannel = new Channel();
private DecodeConfigurationEditor mDecodeEditor = new DecodeConfigurationEditor(null);
private PlaylistManager mPlaylistManager;
private IControllableFileSource mSource;
private JDesktopPane mDesktop;
public DecoderSelectionFrame(JDesktopPane desktop,
IControllableFileSource source)
public DecoderSelectionFrame(JDesktopPane desktop, IControllableFileSource source)
{
AliasModel aliasModel = new AliasModel();
BroadcastModel broadcastModel = new BroadcastModel(null);
@@ -37,6 +41,7 @@ public class DecoderSelectionFrame extends JInternalFrame
mDesktop = desktop;
mSource = source;
mDecodeEditor.setItem(mChannel);
initGUI();
}
@@ -72,17 +77,23 @@ public class DecoderSelectionFrame extends JInternalFrame
@Override
public void actionPerformed(ActionEvent arg0)
{
// DecodeConfiguration config = mDecodeEditor.getDecodeConfig();
//
// if( config != null )
// {
// DecoderViewFrame decoderFrame = new DecoderViewFrame(
// mPlaylistManager, null, mSource );
//
// decoderFrame.setVisible( true );
//
// mDesktop.add( decoderFrame );
// }
mDecodeEditor.save();
Channel channel = mDecodeEditor.getItem();
if(channel != null)
{
DecodeConfiguration config = channel.getDecodeConfiguration();
if( config != null )
{
DecoderViewFrame decoderFrame = new DecoderViewFrame(mPlaylistManager, channel, mSource );
decoderFrame.setVisible( true );
mDesktop.add( decoderFrame );
}
}
}
});
}

183
src/main/java/io/github/dsheirer/instrument/gui/viewer/DemodulatorViewerFX.java Normal file
View File

@@ -0,0 +1,183 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.instrument.gui.viewer;
import io.github.dsheirer.instrument.gui.viewer.decoder.DecoderPaneFactory;
import io.github.dsheirer.module.decode.DecoderType;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.control.SeparatorMenuItem;
import javafx.scene.layout.BorderPane;
import javafx.stage.FileChooser;
import javafx.stage.Stage;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
/**
* Application for viewing and working with demodulators and recording files.
*/
public class DemodulatorViewerFX extends Application
{
private final static Logger mLog = LoggerFactory.getLogger(DemodulatorViewerFX.class);
private Stage mStage;
private MenuBar mMenuBar;
private RecentFilesMenu mRecentFilesMenu;
private ViewerDesktop mViewerDesktop;
@Override
public void start(Stage primaryStage) throws Exception
{
mStage = primaryStage;
setTitle(null);
BorderPane borderPane = new BorderPane();
borderPane.setTop(getMenuBar());
borderPane.setCenter(getViewerDesktop());
Scene scene = new Scene(borderPane, 1500, 900);
mStage.setScene(scene);
mStage.show();
}
private void setTitle(DecoderType decoderType)
{
if(decoderType != null)
{
mStage.setTitle("Demodulator Viewer FX - " + decoderType.getDisplayString());
}
else
{
mStage.setTitle("Demodulator Viewer FX");
}
}
private ViewerDesktop getViewerDesktop()
{
if(mViewerDesktop == null)
{
mViewerDesktop = new ViewerDesktop();
}
return mViewerDesktop;
}
private MenuBar getMenuBar()
{
if(mMenuBar == null)
{
mMenuBar = new MenuBar();
Menu fileMenu = new Menu("File");
MenuItem openMenuItem = new MenuItem("Open ...");
openMenuItem.setOnAction(new EventHandler<ActionEvent>()
{
@Override
public void handle(ActionEvent event)
{
FileChooser fileChooser = new FileChooser();
fileChooser.setTitle("Open an I/Q recording file");
File file = fileChooser.showOpenDialog(mStage);
getViewerDesktop().load(file);
getRecentFilesMenu().add(file);
}
});
MenuItem closeMenuItem = new MenuItem("Close");
closeMenuItem.setOnAction(new EventHandler<ActionEvent>()
{
@Override
public void handle(ActionEvent event)
{
getViewerDesktop().close();
}
});
MenuItem exitMenuItem = new MenuItem("Exit");
exitMenuItem.setOnAction(new EventHandler<ActionEvent>()
{
@Override
public void handle(ActionEvent event)
{
Platform.exit();
}
});
fileMenu.getItems().addAll(openMenuItem, getRecentFilesMenu(), closeMenuItem, new SeparatorMenuItem(),
exitMenuItem);
mMenuBar.getMenus().add(fileMenu);
Menu decoderMenu = new Menu("Decoder");
for(DecoderType decoderType: DecoderType.values())
{
if(DecoderPaneFactory.isSupported(decoderType))
{
MenuItem decoderMenuItem = new MenuItem(decoderType.getShortDisplayString());
decoderMenuItem.setOnAction(new EventHandler<ActionEvent>()
{
@Override
public void handle(ActionEvent event)
{
getViewerDesktop().setDecoder(decoderType);
setTitle(decoderType);
}
});
decoderMenu.getItems().add(decoderMenuItem);
}
}
mMenuBar.getMenus().add(decoderMenu);
}
return mMenuBar;
}
private RecentFilesMenu getRecentFilesMenu()
{
if(mRecentFilesMenu == null)
{
mRecentFilesMenu = new RecentFilesMenu("Recent","demodulator.viewer", 5);
mRecentFilesMenu.setFileSelectionListener(new RecentFilesMenu.IFileSelectionListener()
{
@Override
public void fileSelected(File file)
{
getViewerDesktop().load(file);
}
});
}
return mRecentFilesMenu;
}
public static void main(String[] args)
{
launch(args);
}
}

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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.instrument.gui.viewer;
import io.github.dsheirer.instrument.gui.viewer.decoder.DecoderPane;
import io.github.dsheirer.sample.Broadcaster;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.complex.ComplexBuffer;
import io.github.dsheirer.source.IControllableFileSource;
import io.github.dsheirer.source.IFrameLocationListener;
import io.github.dsheirer.source.wave.ComplexWaveSource;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.control.Alert;
import javafx.scene.control.Button;
import javafx.scene.control.ButtonType;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.HBox;
import org.kordamp.ikonli.fontawesome.FontAwesome;
import org.kordamp.ikonli.javafx.FontIcon;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.sound.sampled.UnsupportedAudioFileException;
import java.io.File;
import java.io.IOException;
public class PlaybackController extends HBox implements IFrameLocationListener, Listener<ComplexBuffer>
{
private final static Logger mLog = LoggerFactory.getLogger(PlaybackController.class);
private Button mRewindButton;
private TextField mPlaybackPositionText;
private Button mPlay1Button;
private Button mPlay10Button;
private Button mPlay100Button;
private Button mPlay1000Button;
private HBox mControlsBox;
private Label mFileLabel;
private EventHandler<ActionEvent> mPlayEventHandler;
private DecoderPane mSampleRateListener;
private IControllableFileSource mControllableFileSource;
private Broadcaster<ComplexBuffer> mComplexBufferBroadcaster = new Broadcaster<>();
public PlaybackController()
{
super(10);
getChildren().addAll(getControlsBox(), getFileLabel());
setControlsEnabled(false);
}
public void setSampleRateListener(DecoderPane decoderPane)
{
mSampleRateListener = decoderPane;
if(mSampleRateListener != null && mControllableFileSource != null)
{
mSampleRateListener.setSampleRate(mControllableFileSource.getSampleRate());
}
}
public void load(File file)
{
if(file != null && file.isFile())
{
try
{
mControllableFileSource = new ComplexWaveSource(file);
mControllableFileSource.setListener(this);
((ComplexWaveSource)mControllableFileSource).setListener((Listener<ComplexBuffer>)this);
mControllableFileSource.open();
if(mSampleRateListener != null)
{
mSampleRateListener.setSampleRate(mControllableFileSource.getSampleRate());
}
}
catch(UnsupportedAudioFileException e)
{
mLog.error("Unsupported Audio File Type [" + (file != null ? file.getAbsolutePath() : "null") + "]");
Alert alert = new Alert(Alert.AlertType.ERROR, "The file type is unsupported.", ButtonType.OK);
alert.show();
return;
}
catch(IOException ioe)
{
mLog.error("Error opening file [" + (file != null ? file.getAbsolutePath() : "null") + "]", ioe);
Alert alert = new Alert(Alert.AlertType.ERROR, "There was an error opening the file",
ButtonType.OK);
alert.show();
return;
}
getFileLabel().setText(file.getName());
setControlsEnabled(true);
}
}
public void close()
{
if(mControllableFileSource != null)
{
try
{
mControllableFileSource.close();
}
catch(IOException ioe)
{
mLog.error("Error closing file", ioe);
}
}
setControlsEnabled(false);
}
/**
* Adds listener to receive complex buffers from this playback
*/
public void addListener(Listener<ComplexBuffer> listener)
{
mComplexBufferBroadcaster.addListener(listener);
}
/**
* Removes the listener from receiving complex buffers from this playback
*/
public void removeListener(Listener<ComplexBuffer> listener)
{
mComplexBufferBroadcaster.removeListener(listener);
}
/**
* Sets all of the playback controls to the specified enabled state.
*/
private void setControlsEnabled(boolean enabled)
{
getRewindButton().setDisable(!enabled);
getPlaybackPositionText().setDisable(!enabled);
getPlay1Button().setDisable(!enabled);
getPlay10Button().setDisable(!enabled);
getPlay100Button().setDisable(!enabled);
getPlay1000Button().setDisable(!enabled);
}
private HBox getControlsBox()
{
if(mControlsBox == null)
{
mControlsBox = new HBox();
mControlsBox.getChildren().addAll(getRewindButton(), getPlaybackPositionText(), getPlay1Button(),
getPlay10Button(), getPlay100Button(), getPlay1000Button());
}
return mControlsBox;
}
private Button getRewindButton()
{
if(mRewindButton == null)
{
mRewindButton = new Button();
mRewindButton.setGraphic(new FontIcon(FontAwesome.FAST_BACKWARD));
}
return mRewindButton;
}
private Button getPlay1Button()
{
if(mPlay1Button == null)
{
mPlay1Button = new Button("1");
mPlay1Button.setUserData(1);
mPlay1Button.setOnAction(getPlaybackEventHandler());
mPlay1Button.setGraphic(new FontIcon(FontAwesome.PLAY));
}
return mPlay1Button;
}
private Button getPlay10Button()
{
if(mPlay10Button == null)
{
mPlay10Button = new Button("10");
mPlay10Button.setUserData(10);
mPlay10Button.setOnAction(getPlaybackEventHandler());
mPlay10Button.setGraphic(new FontIcon(FontAwesome.FAST_FORWARD));
}
return mPlay10Button;
}
private Button getPlay100Button()
{
if(mPlay100Button == null)
{
mPlay100Button = new Button("100");
mPlay100Button.setUserData(100);
mPlay100Button.setOnAction(getPlaybackEventHandler());
mPlay100Button.setGraphic(new FontIcon(FontAwesome.FAST_FORWARD));
}
return mPlay100Button;
}
private Button getPlay1000Button()
{
if(mPlay1000Button == null)
{
mPlay1000Button = new Button("1000");
mPlay1000Button.setUserData(1000);
mPlay1000Button.setOnAction(getPlaybackEventHandler());
mPlay1000Button.setGraphic(new FontIcon(FontAwesome.FAST_FORWARD));
}
return mPlay1000Button;
}
private EventHandler<ActionEvent> getPlaybackEventHandler()
{
if(mPlayEventHandler == null)
{
mPlayEventHandler = new EventHandler<ActionEvent>()
{
@Override
public void handle(ActionEvent event)
{
int count = (int)((Button)event.getSource()).getUserData();
if(mControllableFileSource != null)
{
try
{
mControllableFileSource.next(count, true);
}
catch(IOException ioe)
{
mLog.error("Error while playing samples");
}
}
}
};
}
return mPlayEventHandler;
}
private TextField getPlaybackPositionText()
{
if(mPlaybackPositionText == null)
{
mPlaybackPositionText = new TextField("0");
mPlaybackPositionText.setAlignment(Pos.CENTER);
mPlaybackPositionText.setPrefWidth(80);
}
return mPlaybackPositionText;
}
private Label getFileLabel()
{
if(mFileLabel == null)
{
mFileLabel = new Label();
}
return mFileLabel;
}
@Override
public void frameLocationUpdated(int location)
{
getPlaybackPositionText().setText(String.valueOf(location));
}
@Override
public void frameLocationReset()
{
mLog.info("Frame location reset ... ignoring?");
}
@Override
public void receive(ComplexBuffer complexBuffer)
{
mComplexBufferBroadcaster.broadcast(complexBuffer);
}
}

192
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package io.github.dsheirer.instrument.gui.viewer;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuItem;
import javafx.scene.control.SeparatorMenuItem;
import java.io.File;
import java.util.prefs.Preferences;
public class RecentFilesMenu extends Menu implements EventHandler<ActionEvent>
{
private Preferences mPreferences = Preferences.userNodeForPackage(RecentFilesMenu.class);
private IFileSelectionListener mFileSelectionListener;
private String mIdentifier;
private int mSize;
/**
* Recently used files menu. Uses java Preferences to store recently accessed files and provides access to those
* files via child menu items to this menu.
*
* @param label to use for this menu.
* @param uniqueIdentifier to use in addition to the class path of this class to uniquely identify recently accessed
* files in a java Preferences data store.
* @param size of the maximum number of recent files to present to the user
*/
public RecentFilesMenu(String label, String uniqueIdentifier, int size)
{
super(label);
mIdentifier = uniqueIdentifier;
mSize = size;
load();
}
/**
* Registers the listener to receive file selection events when the user selects a recently used file.
* @param listener to receive file selection events
*/
public void setFileSelectionListener(IFileSelectionListener listener)
{
mFileSelectionListener = listener;
}
/**
* Adds the file to the recently accessed files list. If this file is already included in the recently files list,
* it will be promoted to the first menu item and all other recently used files will be demoted.
*
* @param file to add to the recently used files list.
*/
public void add(File file)
{
if(file != null)
{
String filePath = file.getAbsolutePath();
int index = mSize - 1;
//Check to see if this file is already in the recent files list
for(int x = mSize - 1; x >= 0; x--)
{
String existingItem = mPreferences.get(getKey(x), null);
if(existingItem != null && existingItem.equals(filePath))
{
index = x;
break;
}
}
//Shift all recent files down to make room for the newly added file at the top of the list
while(index > 0)
{
String newerItem = mPreferences.get(getKey(index - 1), null);
if(newerItem != null)
{
mPreferences.put(getKey(index), newerItem);
}
index--;
}
mPreferences.put(getKey(0), file.getAbsolutePath());
}
load();
}
/**
* Creates a unique key value for each numbered recently used file item in the preferences.
*
* @param index of recent file item.
* @return unique key to use with the preferences instance.
*/
private String getKey(int index)
{
return mIdentifier + ".recent.file." + index;
}
/**
* Clears and (re)loads all child recent file menu items.
*/
private void load()
{
getItems().clear();
for(int x = 0; x < mSize; x++)
{
String path = mPreferences.get(getKey(x), null);
if(path != null)
{
File file = new File(path);
if(file.isFile())
{
MenuItem menuItem = new MenuItem(file.getName());
menuItem.setUserData(file);
menuItem.setOnAction(this);
getItems().add(menuItem);
}
}
}
if(getItems().size() > 0)
{
setDisable(false);
getItems().add(new SeparatorMenuItem());
MenuItem clearMenuItem = new MenuItem("Clear History");
clearMenuItem.setOnAction(new EventHandler<ActionEvent>()
{
@Override
public void handle(ActionEvent event)
{
clearHistory();
}
});
getItems().add(clearMenuItem);
}
else
{
setDisable(true);
}
}
/**
* Clears the recently used files history and removes all items from the preferences instance
*/
private void clearHistory()
{
for(int x = 0; x < mSize; x++)
{
mPreferences.remove(getKey(x));
}
load();
}
/**
* Event handler for all recent file child menu items. Extracts the selected file stored as the user data object
* in each of the menu items and notifies the listener that the recent file has been selected.
*
* @param event from a recent file menu item child of this menu.
*/
@Override
public void handle(ActionEvent event)
{
if(mFileSelectionListener != null)
{
if(event.getSource() instanceof MenuItem)
{
Object fileObject = ((MenuItem)event.getSource()).getUserData();
if(fileObject instanceof File)
{
mFileSelectionListener.fileSelected((File)fileObject);
}
}
}
}
/**
* Listener interface for file selection events.
*/
public interface IFileSelectionListener
{
void fileSelected(File file);
}
}

81
src/main/java/io/github/dsheirer/instrument/gui/viewer/ViewerDesktop.java Normal file
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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.instrument.gui.viewer;
import io.github.dsheirer.instrument.gui.viewer.decoder.DecoderPane;
import io.github.dsheirer.instrument.gui.viewer.decoder.DecoderPaneFactory;
import io.github.dsheirer.module.decode.DecoderType;
import javafx.scene.layout.BorderPane;
import java.io.File;
public class ViewerDesktop extends BorderPane
{
private PlaybackController mPlaybackController;
private DecoderPane mDecoderPane = DecoderPaneFactory.getDefaultPane();
public ViewerDesktop()
{
setBottom(getPlaybackController());
setCenter(getDecoderPane());
}
public void load(File file)
{
close();
getPlaybackController().load(file);
}
public void setDecoder(DecoderType decoderType)
{
getPlaybackController().removeListener(getDecoderPane());
getChildren().remove(getDecoderPane());
mDecoderPane = DecoderPaneFactory.getDecoderPane(decoderType);
setCenter(getDecoderPane());
getPlaybackController().addListener(getDecoderPane());
getPlaybackController().setSampleRateListener(getDecoderPane());
}
/**
* Decoder pane
*/
public DecoderPane getDecoderPane()
{
if(mDecoderPane == null)
{
mDecoderPane = DecoderPaneFactory.getDefaultPane();
}
return mDecoderPane;
}
public void close()
{
getPlaybackController().close();
}
private PlaybackController getPlaybackController()
{
if(mPlaybackController == null)
{
mPlaybackController = new PlaybackController();
}
return mPlaybackController;
}
}

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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.instrument.gui.viewer.chart;
import io.github.dsheirer.buffer.ComplexCircularBuffer;
import io.github.dsheirer.dsp.gain.ComplexGain;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.complex.Complex;
import io.github.dsheirer.sample.complex.ComplexBuffer;
import javafx.beans.property.IntegerProperty;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ComplexPhaseLineChart extends LineChart implements Listener<ComplexBuffer>
{
private final static Logger mLog = LoggerFactory.getLogger(ComplexPhaseLineChart.class);
private static final Complex ANGLE_OFFSET_45_DEGREES = Complex.fromAngle(Math.PI / 4.0);
private ComplexCircularBuffer mComplexCircularBuffer;
private ComplexGain mComplexGain = new ComplexGain(600.0f);
private ObservableList<Data<Integer,Float>> mPhaseValues = FXCollections.observableArrayList();
private IntegerProperty mLengthProperty = new SimpleIntegerProperty(40);
public ComplexPhaseLineChart(int length)
{
super(new NumberAxis("Time", 1, length - 10, 2),
new NumberAxis("Phase", -Math.PI, Math.PI, Math.PI / 2.0));
Series<Integer,Float> phaseSeries = new Series<>("Phase", mPhaseValues);
ObservableList<Series<Integer,Float>> observableList = FXCollections.observableArrayList(phaseSeries);
setData(observableList);
init(length);
}
private void init(int length)
{
mLengthProperty.addListener(new ChangeListener<Number>()
{
@Override
public void changed(ObservableValue<? extends Number> observable, Number oldValue, Number newValue)
{
mComplexCircularBuffer = new ComplexCircularBuffer(newValue.intValue());
}
});
mComplexCircularBuffer = new ComplexCircularBuffer(length);
length().setValue(length);
for(int x = 10; x <= length; x++)
{
mPhaseValues.add(new Data(x - 10, 0.0f));
}
}
/**
* Length of the x-axis for displaying samples
*/
public IntegerProperty length()
{
return mLengthProperty;
}
@Override
public void receive(ComplexBuffer complexBuffer)
{
float[] samples = complexBuffer.getSamples();
Complex sample;
for(int x = 0; x < samples.length; x += 2)
{
sample = new Complex(samples[x], samples[x + 1]);
Complex copy = sample.copy();
mComplexGain.apply(copy);
mComplexCircularBuffer.put(copy);
}
updateChart();
}
private void updateChart()
{
Complex[] samples = mComplexCircularBuffer.getAll();
for(int x = 10; x < samples.length; x++)
{
Complex previous = samples[x - 10].copy();
Complex sample = samples[x].copy();
if(previous != null && sample != null)
{
// previous.normalize();
// sample.normalize();
previous.add(ANGLE_OFFSET_45_DEGREES);
sample.multiply(previous.conjugate());
// sample.normalize();
mPhaseValues.get(x - 9).setYValue(sample.angle());
}
}
}
}

131
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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.instrument.gui.viewer.chart;
import io.github.dsheirer.buffer.ComplexCircularBuffer;
import io.github.dsheirer.dsp.gain.ComplexGain;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.complex.Complex;
import io.github.dsheirer.sample.complex.ComplexBuffer;
import javafx.beans.property.IntegerProperty;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ComplexSampleLineChart extends LineChart implements Listener<ComplexBuffer>
{
private final static Logger mLog = LoggerFactory.getLogger(ComplexSampleLineChart.class);
private ComplexCircularBuffer mComplexCircularBuffer;
private ComplexCircularBuffer mDemodulationCircularBuffer;
private ComplexGain mComplexGain = new ComplexGain(500.0f);
private ObservableList<XYChart.Data<Integer,Float>> mISamples = FXCollections.observableArrayList();
private ObservableList<XYChart.Data<Integer,Float>> mQSamples = FXCollections.observableArrayList();
private IntegerProperty mLengthProperty = new SimpleIntegerProperty(40);
public ComplexSampleLineChart(int length, int samplesPerSymbol)
{
super(new NumberAxis("Differential-Demodulated Samples", 0, length, 10),
new NumberAxis("Value", -1.0, 1.0, 0.25));
LineChart.Series<Integer,Float> iSampleSeries = new LineChart.Series<>("Inphase", mISamples);
LineChart.Series<Integer,Float> qSampleSeries = new LineChart.Series<>("Quadrature", mQSamples);
ObservableList<XYChart.Series<Integer,Float>> observableList =
FXCollections.observableArrayList(iSampleSeries, qSampleSeries);
setData(observableList);
init(length, samplesPerSymbol);
}
public void setSamplesPerSymbol(int samplesPerSymbol)
{
mDemodulationCircularBuffer = new ComplexCircularBuffer(samplesPerSymbol);
}
private void init(int length, int samplesPerSymbol)
{
mLengthProperty.addListener(new ChangeListener<Number>()
{
@Override
public void changed(ObservableValue<? extends Number> observable, Number oldValue, Number newValue)
{
mComplexCircularBuffer = new ComplexCircularBuffer(newValue.intValue());
}
});
mComplexCircularBuffer = new ComplexCircularBuffer(length);
mDemodulationCircularBuffer = new ComplexCircularBuffer(samplesPerSymbol);
length().setValue(length);
for(int x = 1; x <= length; x++)
{
mISamples.add(new Data(x, 0.0f));
mQSamples.add(new Data(x, 0.0f));
}
}
/**
* Length of the x-axis for displaying samples
*/
public IntegerProperty length()
{
return mLengthProperty;
}
@Override
public void receive(ComplexBuffer complexBuffer)
{
float[] samples = complexBuffer.getSamples();
Complex sample = new Complex(0,0);
for(int x = 0; x < samples.length; x += 2)
{
sample.setValues(samples[x], samples[x + 1]);
// mComplexGain.apply(sample);
sample.normalize();
Complex previous = mDemodulationCircularBuffer.get(sample.copy());
sample.multiply(previous.conjugate());
mComplexCircularBuffer.put(sample.copy());
}
updateChart();
}
private void updateChart()
{
Complex[] samples = mComplexCircularBuffer.getAll();
for(int x = 0; x < samples.length; x++)
{
Complex sample = samples[x];
if(sample != null)
{
sample.normalize();
mISamples.get(x).setYValue(sample.inphase());
mQSamples.get(x).setYValue(sample.quadrature());
}
}
}
}

72
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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.instrument.gui.viewer.chart;
import io.github.dsheirer.buffer.DoubleCircularBuffer;
import io.github.dsheirer.sample.Listener;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class DoubleLineChart extends LineChart implements Listener<Double>
{
private final static Logger mLog = LoggerFactory.getLogger(DoubleLineChart.class);
private DoubleCircularBuffer mDoubleCircularBuffer;
private ObservableList<Data<Integer,Double>> mPhaseValues = FXCollections.observableArrayList();
public DoubleLineChart(String seriesLabel, double min, double max, double tick, int length)
{
super(new NumberAxis(1, length, 2), new NumberAxis(min, max, tick));
Series<Integer,Double> phaseSeries = new Series<>(seriesLabel, mPhaseValues);
ObservableList<Series<Integer,Double>> observableList = FXCollections.observableArrayList(phaseSeries);
setData(observableList);
init(length);
}
private void init(int length)
{
mDoubleCircularBuffer = new DoubleCircularBuffer(length);
for(int x = 1; x <= length; x++)
{
mPhaseValues.add(new Data(x, 0.0));
}
}
@Override
public void receive(Double phase)
{
mDoubleCircularBuffer.put(phase);
updateChart();
}
private void updateChart()
{
double[] values = mDoubleCircularBuffer.getAll();
for(int x = 0; x < values.length; x++)
{
mPhaseValues.get(x).setYValue(values[x]);
}
}
}

121
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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.instrument.gui.viewer.chart;
import io.github.dsheirer.dsp.psk.SymbolDecisionData;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.complex.Complex;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class EyeDiagramChart extends LineChart implements Listener<SymbolDecisionData>
{
private final static Logger mLog = LoggerFactory.getLogger(EyeDiagramChart.class);
private ObservableList<Series<Double,Double>> mData = FXCollections.observableArrayList();
private int mSeriesCount;
private int mSeriesPointer;
private int mSeriesLength;
public EyeDiagramChart(int seriesCount)
{
super(new NumberAxis("Symbol Timing (5 = center)", 1.0, 10.0, 1.0),
new NumberAxis("Value", -1.25, 1.25, 0.25));
mSeriesCount = seriesCount * 2;
init();
}
private void init()
{
for(int x = 0; x < mSeriesCount; x++)
{
ObservableList<Data<Double,Double>> series = FXCollections.observableArrayList();
mData.add(new Series<>(series));
}
setData(mData);
}
private ObservableList<Data<Double,Double>> getSeries(int series, int length)
{
ObservableList<Data<Double,Double>> seriesData = mData.get(series).getData();
while(seriesData.size() > length)
{
seriesData.remove(0);
}
while(seriesData.size() < length)
{
seriesData.add(new Data<Double,Double>(0.0,0.0));
}
return seriesData;
}
private void checkChartLength(int length)
{
if(mSeriesLength != length)
{
((NumberAxis)getXAxis()).setUpperBound(length);
mSeriesLength = length;
}
}
@Override
public void receive(SymbolDecisionData symbolDecisionData)
{
Complex[] demodulated = symbolDecisionData.getDemodulated();
int length = demodulated.length;
checkChartLength(length);
ObservableList<Data<Double,Double>> iSeries = getSeries(mSeriesPointer++, length + 1);
if(mSeriesPointer >= mSeriesCount)
{
mSeriesPointer = 0;
}
ObservableList<Data<Double,Double>> qSeries = getSeries(mSeriesPointer++, length + 1);
if(mSeriesPointer >= mSeriesCount)
{
mSeriesPointer = 0;
}
for(int x = 0; x < length; x++)
{
demodulated[x].normalize();
Data<Double,Double> iDataPoint = iSeries.get(x);
iDataPoint.setXValue((double)x + 1 - symbolDecisionData.getSamplingPoint());
double iValue = demodulated[x].inphase();
iDataPoint.setYValue(iValue);
Data<Double,Double> qDataPoint = qSeries.get(x);
qDataPoint.setXValue((double)x + 1 - symbolDecisionData.getSamplingPoint());
double qValue = demodulated[x].quadrature();
qDataPoint.setYValue(qValue);
}
}
}

119
src/main/java/io/github/dsheirer/instrument/gui/viewer/chart/FMDemodulatedLineChart.java Normal file
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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.instrument.gui.viewer.chart;
import io.github.dsheirer.buffer.DoubleCircularBuffer;
import io.github.dsheirer.dsp.fm.FMDemodulator;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.complex.Complex;
import io.github.dsheirer.sample.complex.ComplexBuffer;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class FMDemodulatedLineChart extends LineChart implements Listener<ComplexBuffer>
{
private final static Logger mLog = LoggerFactory.getLogger(FMDemodulatedLineChart.class);
private DoubleCircularBuffer mDoubleCircularBuffer;
private int mSamplesPerSymbol;
private int mTwiceSamplesPerSymbol;
private int mSeriesCount;
private ObservableList<Series<Integer,Double>> mData = FXCollections.observableArrayList();
private Complex mPreviousSample = new Complex(0,0);
private int mSeriesPointer;
private int mSamplePointer;
public FMDemodulatedLineChart(int samplesPerSymbol, int seriesCount)
{
super(new NumberAxis("Time", 1, samplesPerSymbol * 2, 2),
new NumberAxis("Demodulated", -1.0, 1.0, 0.25));
mSamplesPerSymbol = samplesPerSymbol;
mTwiceSamplesPerSymbol = mSamplesPerSymbol * 2;
mSeriesCount = seriesCount;
init();
}
private void init()
{
int seriesLength = 2 * mSamplesPerSymbol;
mDoubleCircularBuffer = new DoubleCircularBuffer(seriesLength * mSeriesCount);
for(int x = 0; x < mSeriesCount; x++)
{
ObservableList<Data<Integer,Double>> series = FXCollections.observableArrayList();
for(int y = 0; y < seriesLength; y++)
{
series.add(new Data<Integer,Double>(y + 1, 0.0));
}
mData.add(new Series<>(series));
}
setData(mData);
}
@Override
public void receive(ComplexBuffer complexBuffer)
{
float[] samples = complexBuffer.getSamples();
Complex sample;
for(int x = 0; x < samples.length; x += 2)
{
sample = new Complex(samples[x], samples[x + 1]);
double demodulated = FMDemodulator.demodulate(mPreviousSample, sample);
demodulated *= 2.0;
if(demodulated > 1.0)
{
demodulated = 1.0;
}
else if(demodulated < -1.0)
{
demodulated = -1.0;
}
mDoubleCircularBuffer.put(demodulated);
mPreviousSample = sample;
updateChart(demodulated);
}
}
private void updateChart(double value)
{
Series<Integer,Double> series = mData.get(mSeriesPointer);
Data data = series.getData().get(mSamplePointer++);
data.setYValue(value);
if(mSamplePointer >= mTwiceSamplesPerSymbol)
{
mSamplePointer = 0;
mSeriesPointer++;
if(mSeriesPointer >= mSeriesCount)
{
mSeriesPointer = 0;
}
}
}
}

73
src/main/java/io/github/dsheirer/instrument/gui/viewer/chart/PhaseLineChart.java Normal file
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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.instrument.gui.viewer.chart;
import io.github.dsheirer.buffer.DoubleCircularBuffer;
import io.github.dsheirer.sample.Listener;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class PhaseLineChart extends LineChart implements Listener<Double>
{
private final static Logger mLog = LoggerFactory.getLogger(PhaseLineChart.class);
private DoubleCircularBuffer mDoubleCircularBuffer;
private ObservableList<Data<Integer,Double>> mPhaseValues = FXCollections.observableArrayList();
public PhaseLineChart(int length)
{
super(new NumberAxis("Time", 1, length, 2),
new NumberAxis("Phase", -0.8, 0.8, 0.1));
Series<Integer,Double> phaseSeries = new Series<>("PLL Phase Error", mPhaseValues);
ObservableList<Series<Integer,Double>> observableList = FXCollections.observableArrayList(phaseSeries);
setData(observableList);
init(length);
}
private void init(int length)
{
mDoubleCircularBuffer = new DoubleCircularBuffer(length);
for(int x = 1; x <= length; x++)
{
mPhaseValues.add(new Data(x, 0.0));
}
}
@Override
public void receive(Double phase)
{
mDoubleCircularBuffer.put(phase);
updateChart();
}
private void updateChart()
{
double[] values = mDoubleCircularBuffer.getAll();
for(int x = 0; x < values.length; x++)
{
mPhaseValues.get(x).setYValue(values[x]);
}
}
}

90
src/main/java/io/github/dsheirer/instrument/gui/viewer/chart/SymbolChart.java Normal file
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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.instrument.gui.viewer.chart;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.complex.Complex;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.ScatterChart;
import javafx.scene.chart.XYChart;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class SymbolChart extends ScatterChart implements Listener<Complex>
{
private final static Logger mLog = LoggerFactory.getLogger(SymbolChart.class);
private ObservableList<ScatterChart.Data> mCurrentPoints = FXCollections.observableArrayList();
// private ObservableList<ScatterChart.Data> mPreviousPoints = FXCollections.observableArrayList();
// private ObservableList<ScatterChart.Data> mOldestPoints = FXCollections.observableArrayList();
private int mDataPointer;
private int mHistory;
/**
* Symbol chart for plotting a series of constellation symbols over time. Maintains three history sets for
* current, previous, and oldest symbols.
*
* @param history size for each of the history sets
*/
public SymbolChart(int history)
{
super(new NumberAxis("I", -1.1, 1.1, 0.2),
new NumberAxis("Q", -1.1, 1.1, 0.2));
mHistory = history;
for(int x = 0; x < mHistory; x++)
{
mCurrentPoints.add(new XYChart.Data<>(0.0, 0.0));
// mPreviousPoints.add(new XYChart.Data<>(0.0, 0.0));
// mOldestPoints.add(new XYChart.Data<>(0.0, 0.0));
}
ObservableList<XYChart.Series> data = FXCollections.observableArrayList();
data.add(new ScatterChart.Series("Constellation", mCurrentPoints));
// data.add(new ScatterChart.Series("Previous", mPreviousPoints));
// data.add(new ScatterChart.Series("Oldest", mOldestPoints));
this.setData(data);
}
@Override
public void receive(Complex complex)
{
//Transfer previous to oldest
// XYChart.Data oldest = mOldestPoints.get(mDataPointer);
// XYChart.Data previous = mPreviousPoints.get(mDataPointer);
XYChart.Data current = mCurrentPoints.get(mDataPointer);
// oldest.setXValue(previous.getXValue());
// oldest.setYValue(previous.getYValue());
//
// previous.setXValue(current.getXValue());
// previous.setYValue(current.getYValue());
current.setXValue(complex.inphase());
current.setYValue(complex.quadrature());
mDataPointer++;
if(mDataPointer >= mHistory)
{
mDataPointer = 0;
}
}
}

62
src/main/java/io/github/dsheirer/instrument/gui/viewer/decoder/DecoderPane.java Normal file
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/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.instrument.gui.viewer.decoder;
import io.github.dsheirer.module.decode.DecoderType;
import io.github.dsheirer.sample.Broadcaster;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.complex.ComplexBuffer;
import javafx.scene.layout.VBox;
import javafx.scene.text.Text;
public class DecoderPane extends VBox implements Listener<ComplexBuffer>
{
private Broadcaster<ComplexBuffer> mComplexBufferBroadcaster = new Broadcaster<>();
private DecoderType mDecoderType;
public DecoderPane(DecoderType decoderType)
{
mDecoderType = decoderType;
}
/**
* Package private - used by factory class to create an empty pane
*/
DecoderPane()
{
getChildren().add(new Text("Please select a decoder from the menu"));
}
@Override
public void receive(ComplexBuffer complexBuffer)
{
mComplexBufferBroadcaster.broadcast(complexBuffer);
}
public void addListener(Listener<ComplexBuffer> listener)
{
mComplexBufferBroadcaster.addListener(listener);
}
public void removeListener(Listener<ComplexBuffer> listener)
{
mComplexBufferBroadcaster.removeListener(listener);
}
public void setSampleRate(double sampleRate)
{
}
}

55
src/main/java/io/github/dsheirer/instrument/gui/viewer/decoder/DecoderPaneFactory.java Normal file
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@@ -0,0 +1,55 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.instrument.gui.viewer.decoder;
import io.github.dsheirer.module.decode.DecoderType;
import java.util.EnumSet;
public class DecoderPaneFactory
{
private static final EnumSet<DecoderType> SUPPORTED_DECODER_TYPES = EnumSet.of(DecoderType.P25_PHASE1);
/**
* Creates a decoder pane for the decoder type
*/
public static DecoderPane getDecoderPane(DecoderType decoderType)
{
switch(decoderType)
{
case P25_PHASE1:
return new P25Phase1Pane();
}
return getDefaultPane();
}
/**
* Creates an empty decoder pane
*/
public static DecoderPane getDefaultPane()
{
return new DecoderPane();
}
/**
* Indicates if the decoder type is supported by this factory
*/
public static boolean isSupported(DecoderType decoderType)
{
return SUPPORTED_DECODER_TYPES.contains(decoderType);
}
}

195
src/main/java/io/github/dsheirer/instrument/gui/viewer/decoder/P25Phase1Pane.java Normal file
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@@ -0,0 +1,195 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.instrument.gui.viewer.decoder;
import io.github.dsheirer.instrument.gui.viewer.chart.ComplexSampleLineChart;
import io.github.dsheirer.instrument.gui.viewer.chart.DoubleLineChart;
import io.github.dsheirer.instrument.gui.viewer.chart.EyeDiagramChart;
import io.github.dsheirer.instrument.gui.viewer.chart.PhaseLineChart;
import io.github.dsheirer.instrument.gui.viewer.chart.SymbolChart;
import io.github.dsheirer.message.Message;
import io.github.dsheirer.module.decode.DecoderType;
import io.github.dsheirer.module.decode.p25.P25_C4FMDecoderInstrumented;
import io.github.dsheirer.sample.Broadcaster;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.complex.ComplexBuffer;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Priority;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class P25Phase1Pane extends DecoderPane
{
private final static Logger mLog = LoggerFactory.getLogger(P25Phase1Pane.class);
private HBox mSampleChartBox;
private ComplexSampleLineChart mSampleLineChart;
private EyeDiagramChart mEyeDiagramChart;
private HBox mDecoderChartBox;
private SymbolChart mSymbolChart;
private PhaseLineChart mPLLPhaseErrorLineChart;
private DoubleLineChart mPLLFrequencyLineChart;
private DoubleLineChart mSamplesPerSymbolLineChart;
private Broadcaster<ComplexBuffer> mFilteredBufferBroadcaster = new Broadcaster<>();
private P25_C4FMDecoderInstrumented mDecoder = new P25_C4FMDecoderInstrumented(null);
public P25Phase1Pane()
{
super(DecoderType.P25_PHASE1);
init();
}
private void init()
{
addListener(getDecoder());
getDecoder().setFilteredBufferListener(mFilteredBufferBroadcaster);
getDecoder().setSymbolListener(getSymbolChart());
getDecoder().setPLLPhaseErrorListener(getPLLPhaseErrorLineChart());
getDecoder().setPLLFrequencyListener(getPLLFrequencyLineChart());
getDecoder().setSymbolDecisionDataListener(getEyeDiagramChart());
getDecoder().setSamplesPerSymbolListener(getSamplesPerSymbolLineChart());
mFilteredBufferBroadcaster.addListener(getSampleLineChart());
HBox.setHgrow(getSampleChartBox(), Priority.ALWAYS);
HBox.setHgrow(getDecoderChartBox(), Priority.ALWAYS);
getChildren().addAll(getSampleChartBox(), getDecoderChartBox());
mDecoder.setMessageListener(new Listener<Message>()
{
@Override
public void receive(Message message)
{
mLog.debug(message.getMessage());
}
});
}
@Override
public void setSampleRate(double sampleRate)
{
mLog.debug("Configuring for sample rate: " + sampleRate);
mDecoder.setSampleRate(sampleRate);
double samplesPerSymbol = sampleRate / 4800.0;
getSampleLineChart().setSamplesPerSymbol((int)samplesPerSymbol);
}
private P25_C4FMDecoderInstrumented getDecoder()
{
return mDecoder;
}
private SymbolChart getSymbolChart()
{
if(mSymbolChart == null)
{
mSymbolChart = new SymbolChart(10);
}
return mSymbolChart;
}
private HBox getDecoderChartBox()
{
if(mDecoderChartBox == null)
{
mDecoderChartBox = new HBox();
mDecoderChartBox.setMaxHeight(Double.MAX_VALUE);
getSymbolChart().setMaxWidth(Double.MAX_VALUE);
getPLLPhaseErrorLineChart().setMaxWidth(Double.MAX_VALUE);
getPLLFrequencyLineChart().setMaxWidth(Double.MAX_VALUE);
HBox.setHgrow(getSymbolChart(), Priority.ALWAYS);
HBox.setHgrow(getPLLPhaseErrorLineChart(), Priority.ALWAYS);
HBox.setHgrow(getPLLFrequencyLineChart(), Priority.ALWAYS);
mDecoderChartBox.getChildren().addAll(getSymbolChart(), getPLLPhaseErrorLineChart(),
getPLLFrequencyLineChart());
}
return mDecoderChartBox;
}
private HBox getSampleChartBox()
{
if(mSampleChartBox == null)
{
mSampleChartBox = new HBox();
mSampleChartBox.setMaxHeight(Double.MAX_VALUE);
getSampleLineChart().setMaxWidth(Double.MAX_VALUE);
getEyeDiagramChart().setMaxWidth(Double.MAX_VALUE);
getSamplesPerSymbolLineChart().setMaxWidth(Double.MAX_VALUE);
HBox.setHgrow(getSampleLineChart(), Priority.ALWAYS);
HBox.setHgrow(getEyeDiagramChart(), Priority.ALWAYS);
HBox.setHgrow(getSamplesPerSymbolLineChart(), Priority.ALWAYS);
mSampleChartBox.getChildren().addAll(getSampleLineChart(), getEyeDiagramChart(),
getSamplesPerSymbolLineChart());
}
return mSampleChartBox;
}
private ComplexSampleLineChart getSampleLineChart()
{
if(mSampleLineChart == null)
{
mSampleLineChart = new ComplexSampleLineChart(100, 10);
}
return mSampleLineChart;
}
private EyeDiagramChart getEyeDiagramChart()
{
if(mEyeDiagramChart == null)
{
mEyeDiagramChart = new EyeDiagramChart(10);
}
return mEyeDiagramChart;
}
private PhaseLineChart getPLLPhaseErrorLineChart()
{
if(mPLLPhaseErrorLineChart == null)
{
mPLLPhaseErrorLineChart = new PhaseLineChart(40);
}
return mPLLPhaseErrorLineChart;
}
private DoubleLineChart getPLLFrequencyLineChart()
{
if(mPLLFrequencyLineChart == null)
{
mPLLFrequencyLineChart = new DoubleLineChart( "PLL Frequency", -500, 500, 50, 40);
}
return mPLLFrequencyLineChart;
}
private DoubleLineChart getSamplesPerSymbolLineChart()
{
if(mSamplesPerSymbolLineChart == null)
{
mSamplesPerSymbolLineChart = new DoubleLineChart( "Sample Point", 9.5, 11.5, 0.1, 40);
}
return mSamplesPerSymbolLineChart;
}
}

80
src/main/java/io/github/dsheirer/module/decode/Decoder.java
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@@ -1,17 +1,17 @@
/*******************************************************************************
* 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/>
******************************************************************************/
@@ -22,39 +22,39 @@ import io.github.dsheirer.message.Message;
import io.github.dsheirer.module.Module;
import io.github.dsheirer.sample.Listener;
public abstract class Decoder extends Module
implements IMessageProvider, Listener<Message>
public abstract class Decoder extends Module implements IMessageProvider
{
/* This has to be a broadcaster in order for references to persist */
protected Listener<Message> mMessageListener;
/* This has to be a broadcaster in order for references to persist */
private Listener<Message> mMessageDistributor = new MessageDistributor();
protected Listener<Message> mMessageListener;
/**
* Decoder - parent class for all decoders, demodulators and components.
*/
public Decoder()
{
}
/**
* Decoder - parent class for all decoders, demodulators and components.
*/
public Decoder()
{
}
@Override
public void dispose()
{
mMessageListener = null;
}
@Override
public void dispose()
{
mMessageListener = null;
}
/**
* Identifies the decoder type (ie protocol)
*/
public abstract DecoderType getDecoderType();
/**
* Identifies the decoder type (ie protocol)
*/
public abstract DecoderType getDecoderType();
/**
* Adds a listener for receiving decoded messages from this decoder
*/
@Override
public void setMessageListener( Listener<Message> listener )
public void setMessageListener(Listener<Message> listener)
{
mMessageListener = listener;
}
mMessageListener = listener;
}
/**
* Removes the listener from receiving decoded messages from all attached
@@ -63,23 +63,29 @@ public abstract class Decoder extends Module
@Override
public void removeMessageListener()
{
mMessageListener = null;
mMessageListener = null;
}
/**
* Broadcasts the message to the registered message listener
* Message listener for receiving the output from this decoder
*/
public void broadcast( Message message )
protected Listener<Message> getMessageListener()
{
if( mMessageListener != null )
{
mMessageListener.receive( message );
}
return mMessageDistributor;
}
@Override
public void receive( Message message )
{
broadcast( message );
}
/**
* Distributes/forwards messages from sub-class decoder implementations to the registered message listener.
*/
public class MessageDistributor implements Listener<Message>
{
@Override
public void receive(Message message)
{
if(mMessageListener != null)
{
mMessageListener.receive(message);
}
}
}
}

4
src/main/java/io/github/dsheirer/module/decode/DecoderFactory.java
View File

@@ -246,9 +246,7 @@ public class DecoderFactory
switch(modulation)
{
case C4FM:
modules.add(new FMDemodulatorModule(P25_C4FM_IQ_FILTER));
modules.add(new DemodulatedAudioFilterModule(P25_C4FM_DEMOD_FILTER, 1.0f));
modules.add(new P25_C4FMDecoder(aliasList, decodeConfig.getAFCMaximumCorrection()));
modules.add(new P25_C4FMDecoder(aliasList));
modules.add(new P25DecoderState(aliasList, channelType, P25Decoder.Modulation.C4FM,
p25Config.getIgnoreDataCalls()));
break;

2
src/main/java/io/github/dsheirer/module/decode/fleetsync2/Fleetsync2Decoder.java
View File

@@ -90,7 +90,7 @@ public class Fleetsync2Decoder extends Decoder implements IFilteredRealBufferLis
mMessageProcessor = new Fleetsync2MessageProcessor( aliasList );
mMessageFramer.addMessageListener( mMessageProcessor );
mMessageProcessor.setMessageListener( this );
mMessageProcessor.setMessageListener( getMessageListener() );
}
public void dispose()

2
src/main/java/io/github/dsheirer/module/decode/lj1200/LJ1200Decoder.java
View File

@@ -100,7 +100,7 @@ public class LJ1200Decoder extends Decoder implements IFilteredRealBufferListene
mMessageProcessor = new LJ1200MessageProcessor( aliasList );
mTowerMessageFramer.addMessageListener( mMessageProcessor );
mTransponderMessageFramer.addMessageListener( mMessageProcessor );
mMessageProcessor.setMessageListener( this );
mMessageProcessor.setMessageListener( getMessageListener() );
}
@Override

2
src/main/java/io/github/dsheirer/module/decode/ltrnet/LTRNetDecoder.java
View File

@@ -74,7 +74,7 @@ public class LTRNetDecoder extends Decoder
mLTRMessageFramer.addMessageListener( mLTRMessageProcessor );
mLTRMessageProcessor.setMessageListener( this );
mLTRMessageProcessor.setMessageListener( getMessageListener() );
}
@Override

2
src/main/java/io/github/dsheirer/module/decode/ltrstandard/LTRStandardDecoder.java
View File

@@ -64,7 +64,7 @@ public class LTRStandardDecoder extends Decoder implements IUnFilteredRealBuffer
mLTRMessageProcessor = new LTRStandardMessageProcessor( direction, aliasList );
mLTRMessageFramer.addMessageListener( mLTRMessageProcessor );
mLTRMessageProcessor.setMessageListener( this );
mLTRMessageProcessor.setMessageListener( getMessageListener() );
}
@Override

2
src/main/java/io/github/dsheirer/module/decode/mdc1200/MDCDecoder.java
View File

@@ -102,7 +102,7 @@ public class MDCDecoder extends Decoder implements IFilteredRealBufferListener,
/* Message Processor */
mMessageProcessor = new MDCMessageProcessor( aliasList );
mMessageFramer.addMessageListener( mMessageProcessor );
mMessageProcessor.addMessageListener( this );
mMessageProcessor.addMessageListener(getMessageListener());
}
public void dispose()

2
src/main/java/io/github/dsheirer/module/decode/mpt1327/MPT1327Decoder.java
View File

@@ -148,7 +148,7 @@ public class MPT1327Decoder extends Decoder implements IFilteredRealBufferListen
/* Fully decoded and framed messages processor */
mMessageProcessor = new MPT1327MessageProcessor(aliasList);
mMessageProcessor.setMessageListener(this);
mMessageProcessor.setMessageListener(getMessageListener());
mControlMessageFramer.addMessageListener(mMessageProcessor);
mTrafficMessageFramer.addMessageListener(mMessageProcessor);
}

133
src/main/java/io/github/dsheirer/module/decode/p25/P25Decoder.java
View File

@@ -1,70 +1,91 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.module.decode.p25;
import io.github.dsheirer.alias.AliasList;
import io.github.dsheirer.instrument.Instrumentable;
import io.github.dsheirer.module.decode.Decoder;
import io.github.dsheirer.module.decode.DecoderType;
import io.github.dsheirer.source.tuner.frequency.IFrequencyChangeListener;
import io.github.dsheirer.source.tuner.frequency.IFrequencyChangeProvider;
public abstract class P25Decoder extends Decoder implements IFrequencyChangeListener, IFrequencyChangeProvider, Instrumentable
public abstract class P25Decoder extends Decoder implements IFrequencyChangeListener, IFrequencyChangeProvider
{
private P25MessageProcessor mMessageProcessor;
public P25Decoder( AliasList aliasList )
{
mMessageProcessor = new P25MessageProcessor( aliasList );
mMessageProcessor.setMessageListener( this );
}
public void dispose()
{
super.dispose();
mMessageProcessor.dispose();
mMessageProcessor = null;
}
private P25MessageProcessor mMessageProcessor;
private AliasList mAliasList;
@Override
public DecoderType getDecoderType()
public P25Decoder(AliasList aliasList)
{
return DecoderType.P25_PHASE1;
mAliasList = aliasList;
mMessageProcessor = new P25MessageProcessor(mAliasList);
mMessageProcessor.setMessageListener(getMessageListener());
}
protected P25MessageProcessor getMessageProcessor()
{
return mMessageProcessor;
}
public abstract Modulation getModulation();
public enum Modulation
{
CQPSK( "Simulcast (LSM)", "LSM" ),
C4FM( "Normal (C4FM)", "C4FM" );
private String mLabel;
private String mShortLabel;
private Modulation( String label, String shortLabel )
{
mLabel = label;
mShortLabel = shortLabel;
}
public String getLabel()
{
return mLabel;
}
public String getShortLabel()
{
return mShortLabel;
}
public String toString()
{
return getLabel();
}
}
protected AliasList getAliasList()
{
return mAliasList;
}
public void dispose()
{
super.dispose();
mMessageProcessor.dispose();
mMessageProcessor = null;
}
@Override
public DecoderType getDecoderType()
{
return DecoderType.P25_PHASE1;
}
protected P25MessageProcessor getMessageProcessor()
{
return mMessageProcessor;
}
public abstract Modulation getModulation();
public enum Modulation
{
CQPSK("Simulcast (LSM)", "LSM"),
C4FM("Normal (C4FM)", "C4FM");
private String mLabel;
private String mShortLabel;
private Modulation(String label, String shortLabel)
{
mLabel = label;
mShortLabel = shortLabel;
}
public String getLabel()
{
return mLabel;
}
public String getShortLabel()
{
return mShortLabel;
}
public String toString()
{
return getLabel();
}
}
}

1139
src/main/java/io/github/dsheirer/module/decode/p25/P25MessageFramer.java
View File

File diff suppressed because it is too large Load Diff

378
src/main/java/io/github/dsheirer/module/decode/p25/P25_C4FMDecoder.java
View File

@@ -1,244 +1,200 @@
/*******************************************************************************
* sdrtrunk
* Copyright (C) 2014-2017 Dennis Sheirer
* sdr-trunk
* Copyright (C) 2014-2018 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 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.
* 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/>
* 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 io.github.dsheirer.module.decode.p25;
import io.github.dsheirer.alias.AliasList;
import io.github.dsheirer.instrument.tap.Tap;
import io.github.dsheirer.instrument.tap.TapGroup;
import io.github.dsheirer.instrument.tap.stream.DibitTap;
import io.github.dsheirer.instrument.tap.stream.FloatTap;
import io.github.dsheirer.dsp.filter.FilterFactory;
import io.github.dsheirer.dsp.filter.design.FilterDesignException;
import io.github.dsheirer.dsp.filter.fir.FIRFilterSpecification;
import io.github.dsheirer.dsp.filter.fir.complex.ComplexFIRFilter;
import io.github.dsheirer.dsp.psk.DQPSKDemodulator;
import io.github.dsheirer.dsp.psk.InterpolatingSampleBuffer;
import io.github.dsheirer.dsp.psk.InterpolatingSampleBufferInstrumented;
import io.github.dsheirer.dsp.psk.pll.CostasLoop;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.real.IFilteredRealBufferListener;
import io.github.dsheirer.sample.real.RealBuffer;
import io.github.dsheirer.sample.complex.ComplexBuffer;
import io.github.dsheirer.sample.complex.IComplexBufferListener;
import io.github.dsheirer.source.tuner.frequency.FrequencyChangeEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.ArrayList;
import java.util.List;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ScheduledExecutorService;
public class P25_C4FMDecoder extends P25Decoder implements IFilteredRealBufferListener
public class P25_C4FMDecoder extends P25Decoder implements IComplexBufferListener, Listener<ComplexBuffer>
{
private final static Logger mLog = LoggerFactory.getLogger( P25_C4FMDecoder.class );
/* Instrumentation Taps */
private static final String INSTRUMENT_C4FM_SYMBOL_FILTER_OUTPUT = "Tap Point: Symbol Filter Output";
private static final String INSTRUMENT_C4FM_SLICER_OUTPUT = "Tap Point: C4FM Slicer Output";
private final static Logger mLog = LoggerFactory.getLogger(P25_C4FMDecoder.class);
protected static final double SYMBOL_RATE = 4800;
protected InterpolatingSampleBuffer mInterpolatingSampleBuffer;
protected DQPSKDemodulator mQPSKDemodulator;
protected CostasLoop mCostasLoop;
protected P25MessageFramer mMessageFramer;
protected double mSampleRate;
private Map<Double,float[]> mBasebandFilters = new HashMap<>();
private ComplexFIRFilter mBasebandFilter;
private List<TapGroup> mAvailableTaps;
private C4FMSymbolFilter mSymbolFilter;
private C4FMSlicer mC4FMSlicer;
private P25MessageFramer mMessageFramer;
/**
* P25 Phase 1 C4FM Decoder processes real buffers of un-filtered,
* demodulated audio and produces decoded P25 Phase 1 Messages.
*
* Provides Frequency Control to steer external tuner source and incorporates
* internal gain control.
*
* Note: use the P25AudioModule to convert the decoded messages into audio.
*
* @param aliasList - optional (can be null) list of alias values for network
* infrastructure and subscriber identities that will be included in each
* decoded message
*/
public P25_C4FMDecoder(AliasList aliasList, int frequencyCorrectionMaximum )
{
super( aliasList );
/* Shape gain and frequency offsets to optimize sample stream */
mSymbolFilter = new C4FMSymbolFilter( frequencyCorrectionMaximum );
/* Convert samples to symbols */
mC4FMSlicer = new C4FMSlicer();
mSymbolFilter.setListener( mC4FMSlicer );
/* Sync pattern detection and message construction */
mMessageFramer = new P25MessageFramer( aliasList );
mC4FMSlicer.addListener( mMessageFramer );
/* Process and broadcast messages */
mMessageFramer.setListener( getMessageProcessor() );
}
@Override
public void dispose()
{
super.dispose();
mSymbolFilter.dispose();
mSymbolFilter = null;
mMessageFramer.dispose();
mMessageFramer = null;
mC4FMSlicer.dispose();
mC4FMSlicer = null;
}
public Modulation getModulation()
{
return Modulation.C4FM;
}
@Override
public Listener<RealBuffer> getFilteredRealBufferListener()
{
return mSymbolFilter;
}
/**
* Instrumentation taps for monitoring internal processing
*/
@Override
public List<TapGroup> getTapGroups()
public P25_C4FMDecoder(AliasList aliasList)
{
if( mAvailableTaps == null )
{
mAvailableTaps = new ArrayList<>();
TapGroup group = new TapGroup( "P25 C4FM Decoder" );
group.add( new FloatTap( INSTRUMENT_C4FM_SYMBOL_FILTER_OUTPUT, 0, 0.1f ) );
group.add( new DibitTap( INSTRUMENT_C4FM_SLICER_OUTPUT, 0, 0.1f ) );
mAvailableTaps.add( group );
if( mSymbolFilter != null )
{
mAvailableTaps.addAll( mSymbolFilter.getTapGroups() );
}
}
return mAvailableTaps;
super(aliasList);
setSampleRate(48000.0);
}
/**
* Adds an instrumentation tap to monitor internal processing.
*/
@Override
public void registerTap( Tap tap )
public void setSampleRate(double sampleRate)
{
if( mSymbolFilter != null )
{
mSymbolFilter.registerTap( tap );
}
switch( tap.getName() )
{
case INSTRUMENT_C4FM_SYMBOL_FILTER_OUTPUT:
FloatTap symbolTap = (FloatTap)tap;
mSymbolFilter.setListener( symbolTap );
symbolTap.setListener( mC4FMSlicer );
break;
case INSTRUMENT_C4FM_SLICER_OUTPUT:
DibitTap slicerTap = (DibitTap)tap;
if( mC4FMSlicer != null )
{
mC4FMSlicer.addListener( slicerTap );
}
break;
default:
break;
}
if(sampleRate <= SYMBOL_RATE * 2)
{
throw new IllegalArgumentException("Sample rate must be at least twice the symbol rate [4800]");
}
mSampleRate = sampleRate;
mBasebandFilter = new ComplexFIRFilter(getBasebandFilter(), 1.0f);
mCostasLoop = new CostasLoop(mSampleRate, SYMBOL_RATE);
mInterpolatingSampleBuffer = new InterpolatingSampleBufferInstrumented((float)(sampleRate / SYMBOL_RATE));
mQPSKDemodulator = new DQPSKDemodulator(mCostasLoop, mInterpolatingSampleBuffer);
//Message framer can trigger a symbol-inversion correction to the PLL when detected
mMessageFramer = new P25MessageFramer(getAliasList(), mCostasLoop);
mMessageFramer.setListener(getMessageProcessor());
mQPSKDemodulator.setDibitListener(mMessageFramer);
}
/**
* Removes the instrumentation tap.
*/
@Override
public void unregisterTap( Tap tap )
@Override
public void receive(ComplexBuffer complexBuffer)
{
if( mSymbolFilter != null )
{
mSymbolFilter.unregisterTap( tap );
}
switch( tap.getName() )
{
case INSTRUMENT_C4FM_SYMBOL_FILTER_OUTPUT:
mSymbolFilter.setListener( mC4FMSlicer );
break;
case INSTRUMENT_C4FM_SLICER_OUTPUT:
DibitTap slicerTap = (DibitTap)tap;
if( mC4FMSlicer != null )
{
mC4FMSlicer.removeListener( slicerTap );
}
break;
default:
throw new IllegalArgumentException( "Unrecognized tap: " +
tap.getName() );
}
ComplexBuffer filtered = filter(complexBuffer);
mQPSKDemodulator.receive(filtered);
}
@Override
public void reset()
{
// TODO Auto-generated method stub
}
protected ComplexBuffer filter(ComplexBuffer complexBuffer)
{
return mBasebandFilter.filter(complexBuffer);
}
@Override
public void start( ScheduledExecutorService executor )
{
// TODO Auto-generated method stub
}
private double getSampleRate()
{
return mSampleRate;
}
@Override
public void stop()
{
// TODO Auto-generated method stub
}
private float[] getBasebandFilter()
{
float[] filter = mBasebandFilters.get(getSampleRate());
@Override
public void setFrequencyChangeListener( Listener<FrequencyChangeEvent> listener )
{
if( mSymbolFilter != null )
{
mSymbolFilter.setFrequencyChangeListener( listener );
}
}
if(filter == null)
{
FIRFilterSpecification specification = FIRFilterSpecification.lowPassBuilder()
.sampleRate((int)getSampleRate())
.passBandCutoff(5100)
.passBandAmplitude(1.0)
.passBandRipple(0.01)
.stopBandAmplitude(0.0)
.stopBandStart(6500)
.stopBandRipple(0.01)
.build();
@Override
public void removeFrequencyChangeListener()
{
if( mSymbolFilter != null )
{
mSymbolFilter.setFrequencyChangeListener( null );
}
}
try
{
filter = FilterFactory.getTaps(specification);
@Override
public Listener<FrequencyChangeEvent> getFrequencyChangeListener()
{
if( mSymbolFilter != null )
{
return mSymbolFilter.getFrequencyChangeListener();
}
return null;
}
}
catch(FilterDesignException fde)
{
mLog.error("Couldn't design low pass baseband filter for sample rate: " + getSampleRate());
}
if(filter != null)
{
mBasebandFilters.put(getSampleRate(), filter);
}
else
{
throw new IllegalStateException("Couldn't design a C4FM symbol filter for sample rate: " + mSampleRate);
}
}
return filter;
}
public void dispose()
{
super.dispose();
mBasebandFilter.dispose();
mBasebandFilter = null;
mMessageFramer.dispose();
mMessageFramer = null;
}
@Override
public void setFrequencyChangeListener(Listener<FrequencyChangeEvent> listener)
{
}
@Override
public void removeFrequencyChangeListener()
{
}
@Override
public Listener<FrequencyChangeEvent> getFrequencyChangeListener()
{
return new Listener<FrequencyChangeEvent>()
{
@Override
public void receive(FrequencyChangeEvent frequencyChangeEvent)
{
switch(frequencyChangeEvent.getEvent())
{
case NOTIFICATION_FREQUENCY_CHANGE:
case NOTIFICATION_FREQUENCY_CORRECTION_CHANGE:
case NOTIFICATION_CHANNEL_FREQUENCY_CORRECTION_CHANGE:
case NOTIFICATION_SAMPLE_RATE_CHANGE:
mCostasLoop.reset();
break;
}
}
};
}
@Override
public Listener<ComplexBuffer> getComplexBufferListener()
{
return P25_C4FMDecoder.this;
}
public Modulation getModulation()
{
return Modulation.C4FM;
}
@Override
public void reset()
{
mCostasLoop.reset();
}
@Override
public void start(ScheduledExecutorService executor)
{
}
@Override
public void stop()
{
}
}

109
src/main/java/io/github/dsheirer/module/decode/p25/P25_C4FMDecoderInstrumented.java Normal file
View File

@@ -0,0 +1,109 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.module.decode.p25;
import io.github.dsheirer.alias.AliasList;
import io.github.dsheirer.dsp.psk.DQPSKDemodulatorInstrumented;
import io.github.dsheirer.dsp.psk.InterpolatingSampleBufferInstrumented;
import io.github.dsheirer.dsp.psk.SymbolDecisionData;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.complex.Complex;
import io.github.dsheirer.sample.complex.ComplexBuffer;
public class P25_C4FMDecoderInstrumented extends P25_C4FMDecoder
{
private Listener<Double> mPLLPhaseErrorListener;
private Listener<Double> mPLLFrequencyListener;
private Listener<Double> mSamplesPerSymbolListener;
private Listener<Complex> mSymbolListener;
private Listener<ComplexBuffer> mFilteredSymbolListener;
private Listener<SymbolDecisionData> mSymbolDecisionDataListener;
public P25_C4FMDecoderInstrumented(AliasList aliasList)
{
super(aliasList);
}
/**
* Overrides the filter method so that we can capture the filtered samples for instrumentation
*/
protected ComplexBuffer filter(ComplexBuffer complexBuffer)
{
ComplexBuffer filtered = super.filter(complexBuffer);
if(mFilteredSymbolListener != null)
{
mFilteredSymbolListener.receive(filtered);
}
return filtered;
}
/**
* Overrides this method so we can correctly configure for instrumented operations
*/
public void setSampleRate(double sampleRate)
{
super.setSampleRate(sampleRate);
InterpolatingSampleBufferInstrumented instrumentedBuffer = new InterpolatingSampleBufferInstrumented((float)(sampleRate / SYMBOL_RATE));
mInterpolatingSampleBuffer = instrumentedBuffer;
DQPSKDemodulatorInstrumented instrumented = new DQPSKDemodulatorInstrumented(mCostasLoop, instrumentedBuffer, mSampleRate);
mQPSKDemodulator = instrumented;
instrumented.setSymbolListener(mSymbolListener);
instrumented.setPLLErrorListener(mPLLPhaseErrorListener);
instrumented.setPLLFrequencyListener(mPLLFrequencyListener);
instrumented.setSymbolDecisionDataListener(mSymbolDecisionDataListener);
instrumented.setSamplesPerSymbolListener(mSamplesPerSymbolListener);
instrumented.setDibitListener(mMessageFramer);
}
public void setSymbolListener(Listener<Complex> listener)
{
mSymbolListener = listener;
((DQPSKDemodulatorInstrumented)mQPSKDemodulator).setSymbolListener(listener);
}
public void setPLLPhaseErrorListener(Listener<Double> listener)
{
mPLLPhaseErrorListener = listener;
((DQPSKDemodulatorInstrumented)mQPSKDemodulator).setPLLErrorListener(listener);
}
public void setPLLFrequencyListener(Listener<Double> listener)
{
mPLLFrequencyListener = listener;
((DQPSKDemodulatorInstrumented)mQPSKDemodulator).setPLLFrequencyListener(listener);
}
public void setFilteredBufferListener(Listener<ComplexBuffer> listener)
{
mFilteredSymbolListener = listener;
}
public void setSymbolDecisionDataListener(Listener<SymbolDecisionData> listener)
{
mSymbolDecisionDataListener = listener;
((DQPSKDemodulatorInstrumented)mQPSKDemodulator).setSymbolDecisionDataListener(listener);
}
public void setSamplesPerSymbolListener(Listener<Double> listener)
{
mSamplesPerSymbolListener = listener;
((DQPSKDemodulatorInstrumented)mQPSKDemodulator).setSamplesPerSymbolListener(listener);
}
}

262
src/main/java/io/github/dsheirer/module/decode/p25/P25_LSMDecoder.java
View File

@@ -1,17 +1,17 @@
/*******************************************************************************
* SDR Trunk
* Copyright (C) 2014,2015 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/>
******************************************************************************/
@@ -23,13 +23,8 @@ import io.github.dsheirer.dsp.filter.Window.WindowType;
import io.github.dsheirer.dsp.filter.fir.complex.ComplexFIRFilter_CB_CB;
import io.github.dsheirer.dsp.gain.ComplexFeedForwardGainControl;
import io.github.dsheirer.dsp.psk.LSMDemodulator;
import io.github.dsheirer.dsp.psk.QPSKPolarSlicer;
import io.github.dsheirer.instrument.tap.Tap;
import io.github.dsheirer.dsp.psk.QPSKSymbolDecoder;
import io.github.dsheirer.instrument.tap.TapGroup;
import io.github.dsheirer.instrument.tap.stream.ComplexSampleTap;
import io.github.dsheirer.instrument.tap.stream.ComplexTap;
import io.github.dsheirer.instrument.tap.stream.DibitTap;
import io.github.dsheirer.instrument.tap.stream.QPSKTap;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.complex.ComplexBuffer;
import io.github.dsheirer.sample.complex.ComplexBufferToStreamConverter;
@@ -38,73 +33,72 @@ import io.github.dsheirer.source.tuner.frequency.FrequencyChangeEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ScheduledExecutorService;
public class P25_LSMDecoder extends P25Decoder implements IComplexBufferListener
{
private final static Logger mLog = LoggerFactory.getLogger( P25_LSMDecoder.class );
private final static Logger mLog = LoggerFactory.getLogger(P25_LSMDecoder.class);
/* Instrumentation Taps */
private static final String INSTRUMENT_BASEBAND_FILTER_OUTPUT = "Tap Point: Baseband Filter Output";
private static final String INSTRUMENT_AGC_OUTPUT = "Tap Point: AGC Output";
private static final String INSTRUMENT_LSM_DEMODULATOR_OUTPUT = "Tap Point: LSM Demodulator Output";
private static final String INSTRUMENT_QPSK_SLICER_OUTPUT = "Tap Point: QPSK Slicer Output";
private static final String INSTRUMENT_BASEBAND_FILTER_OUTPUT = "Tap Point: Baseband Filter Output";
private static final String INSTRUMENT_AGC_OUTPUT = "Tap Point: AGC Output";
private static final String INSTRUMENT_LSM_DEMODULATOR_OUTPUT = "Tap Point: LSM Demodulator Output";
private static final String INSTRUMENT_QPSK_SLICER_OUTPUT = "Tap Point: QPSK Slicer Output";
private List<TapGroup> mAvailableTaps;
private ComplexFIRFilter_CB_CB mBasebandFilter;
private ComplexBufferToStreamConverter mStreamConverter = new ComplexBufferToStreamConverter();
private ComplexFeedForwardGainControl mAGC =
new ComplexFeedForwardGainControl( 32 );
private LSMDemodulator mLSMDemodulator = new LSMDemodulator();
private QPSKPolarSlicer mQPSKSlicer = new QPSKPolarSlicer();
private P25MessageFramer mMessageFramer;
public P25_LSMDecoder( AliasList aliasList )
{
super( aliasList );
mBasebandFilter = new ComplexFIRFilter_CB_CB( FilterFactory.getLowPass(
48000, 7250, 8000, 60, WindowType.HANNING, true ), 1.0f );
mBasebandFilter.setListener( mStreamConverter );
mStreamConverter.setListener( mAGC );
private List<TapGroup> mAvailableTaps;
mAGC.setListener( mLSMDemodulator );
mLSMDemodulator.setSymbolListener( mQPSKSlicer );
mMessageFramer = new P25MessageFramer( aliasList, mLSMDemodulator );
mQPSKSlicer.addListener( mMessageFramer );
mMessageFramer.setListener( getMessageProcessor() );
}
public void dispose()
{
super.dispose();
mBasebandFilter.dispose();
mBasebandFilter = null;
mStreamConverter.dispose();
mStreamConverter = null;
mAGC.dispose();
mAGC = null;
private ComplexFIRFilter_CB_CB mBasebandFilter;
private ComplexBufferToStreamConverter mStreamConverter = new ComplexBufferToStreamConverter();
private ComplexFeedForwardGainControl mAGC =
new ComplexFeedForwardGainControl(32);
private LSMDemodulator mLSMDemodulator = new LSMDemodulator();
private QPSKSymbolDecoder mQPSKSlicer = new QPSKSymbolDecoder();
private P25MessageFramer mMessageFramer;
mLSMDemodulator.dispose();
mLSMDemodulator = null;
mQPSKSlicer.dispose();
mQPSKSlicer = null;
mMessageFramer.dispose();
mMessageFramer = null;
}
public P25_LSMDecoder(AliasList aliasList)
{
super(aliasList);
mBasebandFilter = new ComplexFIRFilter_CB_CB(FilterFactory.getLowPass(
48000, 7250, 8000, 60, WindowType.HANNING, true), 1.0f);
mBasebandFilter.setListener(mStreamConverter);
mStreamConverter.setListener(mAGC);
mAGC.setListener(mLSMDemodulator);
mLSMDemodulator.setSymbolListener(mQPSKSlicer);
mMessageFramer = new P25MessageFramer(aliasList, mLSMDemodulator.getCostasLoop());
mQPSKSlicer.addListener(mMessageFramer);
mMessageFramer.setListener(getMessageProcessor());
}
public void dispose()
{
super.dispose();
mBasebandFilter.dispose();
mBasebandFilter = null;
mStreamConverter.dispose();
mStreamConverter = null;
mAGC.dispose();
mAGC = null;
mLSMDemodulator.dispose();
mLSMDemodulator = null;
mQPSKSlicer.dispose();
mQPSKSlicer = null;
mMessageFramer.dispose();
mMessageFramer = null;
}
@Override
public void setFrequencyChangeListener(Listener<FrequencyChangeEvent> listener)
@@ -130,130 +124,34 @@ public class P25_LSMDecoder extends P25Decoder implements IComplexBufferListener
}
@Override
public Listener<ComplexBuffer> getComplexBufferListener()
{
return mBasebandFilter;
}
public Modulation getModulation()
{
return Modulation.CQPSK;
}
/**
* Provides a list of instrumentation taps for monitoring internal processing
*/
@Override
public List<TapGroup> getTapGroups()
public Listener<ComplexBuffer> getComplexBufferListener()
{
if( mAvailableTaps == null )
{
mAvailableTaps = new ArrayList<>();
TapGroup group = new TapGroup( "P25 LSM Decoder" );
group.add( new ComplexTap( INSTRUMENT_BASEBAND_FILTER_OUTPUT, 0, 1.0f ) );
group.add( new ComplexTap( INSTRUMENT_AGC_OUTPUT, 0, 1.0f ) );
group.add( new QPSKTap( INSTRUMENT_LSM_DEMODULATOR_OUTPUT, 0, 1.0f ) );
group.add( new DibitTap( INSTRUMENT_QPSK_SLICER_OUTPUT, 0, 0.1f ) );
mAvailableTaps.add( group );
if( mLSMDemodulator != null )
{
mAvailableTaps.addAll( mLSMDemodulator.getTapGroups() );
}
}
return mAvailableTaps;
return mBasebandFilter;
}
/**
* Adds the instrumentation tap
*/
@Override
public void registerTap( Tap tap )
public Modulation getModulation()
{
if( mLSMDemodulator != null )
{
mLSMDemodulator.registerTap( tap );
}
switch( tap.getName() )
{
case INSTRUMENT_BASEBAND_FILTER_OUTPUT:
ComplexSampleTap baseband = (ComplexSampleTap)tap;
mStreamConverter.setListener( baseband );
baseband.setListener( mAGC );
break;
case INSTRUMENT_AGC_OUTPUT:
ComplexSampleTap agcSymbol = (ComplexSampleTap)tap;
mAGC.setListener( agcSymbol );
agcSymbol.setListener( mLSMDemodulator );
break;
case INSTRUMENT_LSM_DEMODULATOR_OUTPUT:
QPSKTap qpsk = (QPSKTap)tap;
mLSMDemodulator.setSymbolListener( qpsk );
qpsk.setListener( mQPSKSlicer );
break;
case INSTRUMENT_QPSK_SLICER_OUTPUT:
mQPSKSlicer.addListener( (DibitTap)tap );
break;
default:
throw new IllegalArgumentException( "Unrecognized tap: " +
tap.getName() );
}
return Modulation.CQPSK;
}
/**
* Removes the instrumentation tap
*/
@Override
public void unregisterTap( Tap tap )
@Override
public void reset()
{
if( mLSMDemodulator != null )
{
mLSMDemodulator.unregisterTap( tap );
}
switch( tap.getName() )
{
case INSTRUMENT_BASEBAND_FILTER_OUTPUT:
mStreamConverter.setListener( mAGC );
break;
case INSTRUMENT_AGC_OUTPUT:
mAGC.setListener( mLSMDemodulator );
break;
case INSTRUMENT_LSM_DEMODULATOR_OUTPUT:
mLSMDemodulator.setSymbolListener( mQPSKSlicer );
break;
case INSTRUMENT_QPSK_SLICER_OUTPUT:
mQPSKSlicer.removeListener( (DibitTap)tap );
break;
default:
throw new IllegalArgumentException( "Unrecognized tap: " +
tap.getName() );
}
// TODO Auto-generated method stub
}
@Override
public void reset()
{
// TODO Auto-generated method stub
}
@Override
public void start(ScheduledExecutorService executor)
{
// TODO Auto-generated method stub
@Override
public void start( ScheduledExecutorService executor )
{
// TODO Auto-generated method stub
}
}
@Override
public void stop()
{
// TODO Auto-generated method stub
}
@Override
public void stop()
{
// TODO Auto-generated method stub
}
}

2
src/main/java/io/github/dsheirer/module/decode/p25/message/tsbk/osp/control/SyncBroadcast.java
View File

@@ -78,7 +78,7 @@ public class SyncBroadcast extends TSBKMessage
if( isMicroslotsLockedToMinuteRollover() )
{
sb.append( " MICROSLOT-MINUTE ROLLOVER:LOCKED" );
sb.append( " MICROSLOT-MINUTE ROLLOVER:SLOW" );
}
else
{

2
src/main/java/io/github/dsheirer/module/decode/passport/PassportDecoder.java
View File

@@ -63,7 +63,7 @@ public class PassportDecoder extends Decoder
mPassportMessageProcessor = new PassportMessageProcessor( aliasList );
mPassportMessageFramer.addMessageListener( mPassportMessageProcessor );
mPassportMessageProcessor.setMessageListener( this );
mPassportMessageProcessor.setMessageListener( getMessageListener() );
}
@Override

4
src/main/java/io/github/dsheirer/module/decode/tait/Tait1200Decoder.java
View File

@@ -104,8 +104,8 @@ public class Tait1200Decoder extends Decoder implements IFilteredRealBufferListe
mMessageFramerGPS.addMessageListener( mMessageAProcessor );
mMessageFramerANI.addMessageListener( mMessageBProcessor );
mMessageAProcessor.setMessageListener( this );
mMessageBProcessor.setMessageListener( this );
mMessageAProcessor.setMessageListener(getMessageListener());
mMessageBProcessor.setMessageListener(getMessageListener());
}
public void dispose()

3
src/main/java/io/github/dsheirer/record/RecorderManager.java
View File

@@ -42,6 +42,7 @@ public class RecorderManager implements Listener<AudioPacket>
private static final Logger mLog = LoggerFactory.getLogger(RecorderManager.class);
public static final int AUDIO_SAMPLE_RATE = 8000;
public static final int BASEBAND_SAMPLE_RATE = 48000;
public static final long IDLE_RECORDER_REMOVAL_THRESHOLD = 6000; //6 seconds
private Map<String,AudioPacketWaveRecorder> mRecorders = new HashMap<>();
@@ -229,7 +230,7 @@ public class RecorderManager implements Listener<AudioPacket>
sb.append(SystemProperties.getInstance().getApplicationFolder("recordings"));
sb.append(File.separator).append(channelName).append("_baseband");
return new ComplexBufferWaveRecorder(AUDIO_SAMPLE_RATE, sb.toString());
return new ComplexBufferWaveRecorder(BASEBAND_SAMPLE_RATE, sb.toString());
}
/**

5
src/main/java/io/github/dsheirer/sample/ConversionUtils.java
View File

@@ -21,14 +21,13 @@ public class ConversionUtils
*/
public static float[] convertFromSigned16BitSamples( ByteBuffer buffer )
{
ShortBuffer byteBuffer =
buffer.order( ByteOrder.LITTLE_ENDIAN ).asShortBuffer();
ShortBuffer byteBuffer = buffer.order( ByteOrder.LITTLE_ENDIAN ).asShortBuffer();
float[] samples = new float[ buffer.limit() / 2 ];
for( int x = 0; x < samples.length; x++ )
{
samples[ x ] = (float)byteBuffer.get() / 32767.0f;
samples[ x ] = (float)byteBuffer.get() / (float)Short.MAX_VALUE;
}
return samples;

773
src/main/java/io/github/dsheirer/sample/complex/Complex.java
View File

@@ -1,17 +1,17 @@
/*******************************************************************************
* 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/>
******************************************************************************/
@@ -27,407 +27,424 @@ import java.io.Serializable;
*/
public class Complex implements Serializable
{
private final static Logger mLog =
LoggerFactory.getLogger( Complex.class );
private final static Logger mLog = LoggerFactory.getLogger(Complex.class);
private static final long serialVersionUID = 1L;
private static final long serialVersionUID = 1L;
private float mLeft;
private float mRight;
public Complex( float left, float right )
{
mLeft = left;
mRight = right;
}
public Complex()
{
this( 0.0f, 0.0f );
}
public void setInphase( float inphase )
{
mLeft = inphase;
}
public void setQuadrature( float quadrature )
{
mRight = quadrature;
}
public void setValues( float inphase, float quadrature )
{
mLeft = inphase;
mRight = quadrature;
}
private float mRight;
public Complex copy()
{
return new Complex( mLeft, mRight );
}
public String toString()
{
StringBuilder sb = new StringBuilder();
sb.append( "I:" );
sb.append( mLeft );
sb.append( " Q:" );
sb.append( mRight );
return sb.toString();
}
/**
* Returns a new sample representing the conjugate of this one
*/
public Complex conjugate()
{
return new Complex( mLeft, -mRight );
}
public Complex(float left, float right)
{
mLeft = left;
mRight = right;
}
/**
* Multiplies this sample by the scalor value
*/
public void multiply( float scalor )
{
mLeft *= scalor;
mRight *= scalor;
}
public static Complex multiply( Complex sample, float scalor )
{
return new Complex( sample.left() * scalor,
sample.right() * scalor );
}
/**
* Calculates the inphase component of multiplying two complex numbers, A and B.
*/
public static float multiplyInphase( float inphaseA, float quadratureA, float inphaseB, float quadratureB )
{
return ( inphaseA * inphaseB ) - ( quadratureA * quadratureB );
}
/**
* Calculates the quadrature component of multiplying two complex numbers, A and B.
*/
public static float multiplyQuadrature( float inphaseA, float quadratureA, float inphaseB, float quadratureB )
{
return ( quadratureA * inphaseB ) + ( inphaseA * quadratureB );
}
/**
* Multiplies this sample by the multiplier sample
*/
public void multiply( Complex multiplier )
{
float inphase = multiplyInphase( inphase(), quadrature(),
multiplier.inphase(), multiplier.quadrature() );
float quadrature = multiplyQuadrature( inphase(), quadrature(),
multiplier.inphase(), multiplier.quadrature() );
mLeft = inphase;
mRight = quadrature;
}
/**
* Multiplies both samples returning a new sample with the results
*/
public static Complex multiply( Complex sample1, Complex sample2 )
{
float inphase = multiplyInphase( sample1.inphase(), sample1.quadrature(),
sample2.inphase(), sample2.quadrature() );
float quadrature = multiplyQuadrature( sample1.inphase(), sample1.quadrature(),
sample2.inphase(), sample2.quadrature() );
public Complex()
{
this(0.0f, 0.0f);
}
return new Complex( inphase, quadrature );
}
public void setInphase(float inphase)
{
mLeft = inphase;
}
public static Complex multiply( Complex sample,
Float inphase, Float quadrature )
{
float i = multiplyInphase( sample.inphase(), sample.quadrature(),
inphase, quadrature );
float q = multiplyQuadrature( sample.inphase(), sample.quadrature(),
inphase, quadrature );
return new Complex( i, q );
}
public static Complex multiply( Float inphase, Float quadrature, Complex sample )
{
float i = multiplyInphase( inphase, quadrature, sample.inphase(), sample.quadrature() );
float q = multiplyQuadrature( inphase, quadrature, sample.inphase(), sample.quadrature() );
return new Complex( i, q );
}
public void setQuadrature(float quadrature)
{
mRight = quadrature;
}
public static Complex multiply( float inphaseA, float quadratureA, float inphaseB, float quadratureB )
{
float i = multiplyInphase( inphaseA, quadratureA, inphaseB, quadratureB );
float q = multiplyQuadrature( inphaseA, quadratureA, inphaseB, quadratureB );
return new Complex( i, q );
}
/**
* Adds the adder sample value to this sample
*/
public void add( Complex adder )
{
mLeft += adder.left();
mRight += adder.right();
}
public void setValues(float inphase, float quadrature)
{
mLeft = inphase;
mRight = quadrature;
}
/**
* Adds the two complex samples returning a new complex sample with the result
*/
public static Complex add( Complex first, Complex second )
{
return new Complex( first.left() + second.left(),
first.right() + second.right() );
}
public void setValues(Complex sampleToCopy)
{
mLeft = sampleToCopy.left();
mRight = sampleToCopy.right();
}
/**
* Adds the two complex samples returning a new complex sample with the result
*/
public static Complex subtract( Complex first, Complex second )
{
return new Complex( first.left() - second.left(),
first.right() - second.right() );
}
public Complex copy()
{
return new Complex(mLeft, mRight);
}
/**
* Magnitude of this sample
*/
public float magnitude()
{
return (float)Math.sqrt( magnitudeSquared() );
}
public static float magnitude( float inphase, float quadrature )
{
return (float)Math.sqrt( ( inphase * inphase ) + ( quadrature * quadrature ) );
}
public String toString()
{
StringBuilder sb = new StringBuilder();
/**
* Magnitude squared of this sample
*/
public float magnitudeSquared()
{
return norm();
}
sb.append("I:");
sb.append(mLeft);
sb.append(" Q:");
sb.append(mRight);
/**
* Norm of this sample = ( i * i ) + ( q * q )
*/
public float norm()
{
return (float)( ( inphase() * inphase() ) +
( quadrature() * quadrature() ) );
}
/**
* Returns the vector length to 1 (unit circle)
*/
public void normalize()
{
float magnitude = magnitude();
if( magnitude != 0 )
{
multiply( (float)( 1.0f / magnitude() ) );
}
}
return sb.toString();
}
/**
* Returns the vector length to 1 (unit circle),
* avoiding square root multiplication
*/
public void fastNormalize()
{
multiply( (float)( 1.95f - magnitudeSquared() ) );
}
public float left()
{
return mLeft;
}
public float right()
{
return mRight;
}
/**
* Returns a new sample representing the conjugate of this one
*/
public Complex conjugate()
{
return new Complex(mLeft, -mRight);
}
public float inphase()
{
return mLeft;
}
/**
* Absolute value of in-phase component
*/
public float inPhaseAbsolute()
{
return Math.abs( mLeft );
}
/**
* Multiplies this sample by the scalor value
*/
public void multiply(float scalor)
{
mLeft *= scalor;
mRight *= scalor;
}
public float quadrature()
{
return mRight;
}
/**
* Absolute value of quadrature component
*/
public float quadratureAbsolute()
{
return Math.abs( mRight );
}
public static Complex multiply(Complex sample, float scalor)
{
return new Complex(sample.left() * scalor,
sample.right() * scalor);
}
public float x()
{
return mLeft;
}
public float y()
{
return mRight;
}
public float real()
{
return mLeft;
}
/**
* Calculates the inphase component of multiplying two complex numbers, A and B.
*/
public static float multiplyInphase(float inphaseA, float quadratureA, float inphaseB, float quadratureB)
{
return (inphaseA * inphaseB) - (quadratureA * quadratureB);
}
/**
* Absolute value of real component
*/
public float realAbsolute()
{
return Math.abs( mLeft );
}
/**
* Calculates the quadrature component of multiplying two complex numbers, A and B.
*/
public static float multiplyQuadrature(float inphaseA, float quadratureA, float inphaseB, float quadratureB)
{
return (quadratureA * inphaseB) + (inphaseA * quadratureB);
}
public float imaginary()
{
return mRight;
}
/**
* Multiplies this sample by the multiplier sample
*/
public void multiply(Complex multiplier)
{
float inphase = multiplyInphase(inphase(), quadrature(),
multiplier.inphase(), multiplier.quadrature());
float quadrature = multiplyQuadrature(inphase(), quadrature(),
multiplier.inphase(), multiplier.quadrature());
/**
* Absolute value of imaginary component
*/
public float imaginaryAbsolute()
{
return Math.abs( mRight );
}
mLeft = inphase;
mRight = quadrature;
}
/**
* Returns the greater absolute value between left and right values
*/
public float maximumAbsolute()
{
if( Math.abs( mLeft ) > Math.abs( mRight ) )
{
return Math.abs( mLeft );
}
else
{
return Math.abs( mRight );
}
}
/**
* Multiplies both samples returning a new sample with the results
*/
public static Complex multiply(Complex sample1, Complex sample2)
{
float inphase = multiplyInphase(sample1.inphase(), sample1.quadrature(),
sample2.inphase(), sample2.quadrature());
float quadrature = multiplyQuadrature(sample1.inphase(), sample1.quadrature(),
sample2.inphase(), sample2.quadrature());
/**
* Creates a new complex sample representing the angle with unit circle
* magnitude
* @param angle in radians
* @return
*/
public static Complex fromAngle( float angle )
{
return new Complex( (float)Math.cos( angle ),
(float)Math.sin( angle ) );
}
return new Complex(inphase, quadrature);
}
/**
* Angle of this sample in radians
*/
public float angle()
{
return (float)Math.atan2( y(), x() );
}
public static Complex multiply(Complex sample,
Float inphase, Float quadrature)
{
float i = multiplyInphase(sample.inphase(), sample.quadrature(),
inphase, quadrature);
float q = multiplyQuadrature(sample.inphase(), sample.quadrature(),
inphase, quadrature);
/**
* Constrains the i and q quantities to +/- value.
*
* @param value - maximum absolute value
*/
public void clip( float value )
{
if( mLeft > value )
{
mLeft = value;
}
else if( mLeft < -value )
{
mLeft = -value;
}
if( mRight > value )
{
mRight = value;
}
else if( mRight < -value )
{
mRight = -value;
}
}
return new Complex(i, q);
}
/**
* Angle of this sample in degrees
*/
public float polarAngle()
{
return (float)Math.toDegrees( angle() );
}
public static Complex multiply(Float inphase, Float quadrature, Complex sample)
{
float i = multiplyInphase(inphase, quadrature, sample.inphase(), sample.quadrature());
float q = multiplyQuadrature(inphase, quadrature, sample.inphase(), sample.quadrature());
/**
* Provides an approximate magnitude value for this sample.
*/
public float envelope()
{
return envelope( mLeft, mRight );
}
public static float envelope( float inphase, float quadrature )
{
float inphaseAbsolute = Math.abs( inphase );
float quadratureAbsolute = Math.abs( quadrature );
if( inphaseAbsolute > quadratureAbsolute )
{
return inphaseAbsolute + ( 0.4f * quadratureAbsolute );
}
else
{
return quadratureAbsolute + ( 0.4f * inphaseAbsolute );
}
}
public static void main( String[] args )
{
double angle = Math.PI; //180 degrees
Complex s1 = new Complex( (float)Math.sin( angle ), (float)Math.cos( angle ) );
return new Complex(i, q);
}
Complex tap = new Complex( 1.0f, -0.1f );
public static Complex multiply(float inphaseA, float quadratureA, float inphaseB, float quadratureB)
{
float i = multiplyInphase(inphaseA, quadratureA, inphaseB, quadratureB);
float q = multiplyQuadrature(inphaseA, quadratureA, inphaseB, quadratureB);
Complex convolved = Complex.multiply( s1, tap );
mLog.debug( "s: " + s1.toString() +
" t: " + tap.toString() +
" convolved: " + convolved.toString() );
}
return new Complex(i, q);
}
/**
* Adds the adder sample value to this sample
*/
public void add(Complex adder)
{
mLeft += adder.left();
mRight += adder.right();
}
/**
* Adds the two complex samples returning a new complex sample with the result
*/
public static Complex add(Complex first, Complex second)
{
return new Complex(first.left() + second.left(),
first.right() + second.right());
}
/**
* Adds the two complex samples returning a new complex sample with the result
*/
public static Complex subtract(Complex first, Complex second)
{
return new Complex(first.left() - second.left(),
first.right() - second.right());
}
/**
* Magnitude of this sample
*/
public float magnitude()
{
return (float)Math.sqrt(magnitudeSquared());
}
public static float magnitude(float inphase, float quadrature)
{
return (float)Math.sqrt((inphase * inphase) + (quadrature * quadrature));
}
/**
* Magnitude squared of this sample
*/
public float magnitudeSquared()
{
return norm();
}
/**
* Norm of this sample = ( i * i ) + ( q * q )
*/
public float norm()
{
return (float)((inphase() * inphase()) +
(quadrature() * quadrature()));
}
/**
* Returns the vector length to 1 (unit circle)
*/
public void normalize()
{
float magnitude = magnitude();
if(magnitude != 0)
{
multiply((float)(1.0f / magnitude()));
}
}
/**
* Returns the vector length to 1 (unit circle),
* avoiding square root multiplication
*/
public void fastNormalize()
{
multiply((float)(1.95f - magnitudeSquared()));
}
public float left()
{
return mLeft;
}
public float right()
{
return mRight;
}
public float inphase()
{
return mLeft;
}
/**
* Absolute value of in-phase component
*/
public float inPhaseAbsolute()
{
return Math.abs(mLeft);
}
public float quadrature()
{
return mRight;
}
/**
* Absolute value of quadrature component
*/
public float quadratureAbsolute()
{
return Math.abs(mRight);
}
public float x()
{
return mLeft;
}
public float y()
{
return mRight;
}
public float real()
{
return mLeft;
}
/**
* Absolute value of real component
*/
public float realAbsolute()
{
return Math.abs(mLeft);
}
public float imaginary()
{
return mRight;
}
/**
* Absolute value of imaginary component
*/
public float imaginaryAbsolute()
{
return Math.abs(mRight);
}
/**
* Returns the greater absolute value between left and right values
*/
public float maximumAbsolute()
{
if(Math.abs(mLeft) > Math.abs(mRight))
{
return Math.abs(mLeft);
}
else
{
return Math.abs(mRight);
}
}
/**
* Creates a new complex sample representing the angle with unit circle
* magnitude
*
* @param angle in radians
* @return
*/
public static Complex fromAngle(double angle)
{
return new Complex((float)Math.cos(angle), (float)Math.sin(angle));
}
/**
* Sets this complex instance with the specified angle in radians.
* @param angle in radians
*/
public void setAngle(double angle)
{
setInphase((float)Math.cos(angle));
setQuadrature((float)Math.sin(angle));
}
/**
* Angle of this sample in radians
*/
public float angle()
{
return (float)Math.atan2(y(), x());
}
public float angleDegrees()
{
return (float)Math.toDegrees(angle());
}
/**
* Constrains the i and q quantities to +/- value.
*
* @param value - maximum absolute value
*/
public void clip(float value)
{
if(mLeft > value)
{
mLeft = value;
}
else if(mLeft < -value)
{
mLeft = -value;
}
if(mRight > value)
{
mRight = value;
}
else if(mRight < -value)
{
mRight = -value;
}
}
/**
* Angle of this sample in degrees
*/
public float polarAngle()
{
return (float)Math.toDegrees(angle());
}
/**
* Provides an approximate magnitude value for this sample.
*/
public float envelope()
{
return envelope(mLeft, mRight);
}
public static float envelope(float inphase, float quadrature)
{
float inphaseAbsolute = Math.abs(inphase);
float quadratureAbsolute = Math.abs(quadrature);
if(inphaseAbsolute > quadratureAbsolute)
{
return inphaseAbsolute + (0.4f * quadratureAbsolute);
}
else
{
return quadratureAbsolute + (0.4f * inphaseAbsolute);
}
}
public static void main(String[] args)
{
Complex ROTATE_FROM_MINUS_45 = Complex.fromAngle(1.0 * Math.PI / 4.0);
Complex ROTATE_FROM_PLUS_135 = Complex.fromAngle(-3.0 * Math.PI / 4.0);
mLog.debug("REF: " + ROTATE_FROM_MINUS_45.toString());
Complex symbol = new Complex(0.7665009f, -0.6422432f);
mLog.debug("SYM: " + symbol.toString());
symbol.multiply(ROTATE_FROM_MINUS_45);
mLog.debug("DER: " + symbol.toString());
}
}

53
src/main/java/io/github/dsheirer/source/IControllableFileSource.java
View File

@@ -1,3 +1,18 @@
/*******************************************************************************
* sdr-trunk
* Copyright (C) 2014-2018 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 io.github.dsheirer.source;
import javax.sound.sampled.UnsupportedAudioFileException;
@@ -10,22 +25,24 @@ import java.io.IOException;
*/
public interface IControllableFileSource
{
/**
* Opens the file source
*/
public void open() throws IOException, UnsupportedAudioFileException;
public void close() throws IOException;
public File getFile();
public void next( int frames ) throws IOException;
public void next( int frames, boolean broadcast ) throws IOException;
public long getFrameCount() throws IOException;
public void setListener( IFrameLocationListener listener );
public void removeListener( IFrameLocationListener listener );
/**
* Opens the file source
*/
public void open() throws IOException, UnsupportedAudioFileException;
public void close() throws IOException;
public File getFile();
public void next(int frames) throws IOException;
public void next(int frames, boolean broadcast) throws IOException;
public long getFrameCount() throws IOException;
public int getSampleRate();
public void setListener(IFrameLocationListener listener);
public void removeListener(IFrameLocationListener listener);
}

1
src/main/java/io/github/dsheirer/source/tuner/TunerChannelSource.java
View File

@@ -469,6 +469,7 @@ public class TunerChannelSource extends ComplexSource implements IFrequencyChang
{
//Frequency correction requests are the only change requests supported from downstream components
case REQUEST_CHANNEL_FREQUENCY_CORRECTION_CHANGE:
mLog.debug("Got a freq corr change request: " + event.getValue().intValue());
setFrequencyCorrection(event.getValue().intValue());
break;
}

10
src/main/java/io/github/dsheirer/source/wave/ComplexWaveSource.java
View File

@@ -167,13 +167,8 @@ public class ComplexWaveSource extends ComplexSource implements IControllableFil
if(mInputStream != null)
{
mInputStream.close();
mInputStream = null;
}
else
{
throw new IOException("Can't close wave source - was not opened");
}
mInputStream = null;
}
/**
@@ -239,8 +234,7 @@ public class ComplexWaveSource extends ComplexSource implements IControllableFil
buffer = Arrays.copyOf(buffer, samplesRead);
}
float[] samples = ConversionUtils
.convertFromSigned16BitSamples(buffer);
float[] samples = ConversionUtils.convertFromSigned16BitSamples(buffer);
mListener.receive(new ComplexBuffer(samples));
}