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[WIP] Implements reusable sample buffers across all components. This

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produces a significant reduction in memory usage, especially for tuners
like the airspy and hackrf that produce 10/20 MSPS sample rates.  This
is observed to be around 66% reduction in peak memory usage and provides
a more stable memory utilization across time reducing stress on the
garbage collector.

Use of these reusable memory buffers will be pushed further down into
the processing chain modules to ensure we keep new object creation
to the lowest levels possible.
This commit is contained in:
Denny
2018-02-03 10:05:16 -05:00
parent fcd3c2fd46
commit f2f2c92afe
56 changed files with 1630 additions and 1255 deletions
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14
src/main/java/io/github/dsheirer/spectrum/SpectralDisplayPanel.java
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@@ -26,7 +26,7 @@ import io.github.dsheirer.module.decode.DecoderType;
import io.github.dsheirer.properties.SystemProperties;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.SampleType;
import io.github.dsheirer.sample.complex.ComplexBuffer;
import io.github.dsheirer.sample.complex.reusable.ReusableComplexBuffer;
import io.github.dsheirer.settings.ColorSetting.ColorSettingName;
import io.github.dsheirer.settings.ColorSettingMenuItem;
import io.github.dsheirer.settings.SettingsManager;
@@ -75,7 +75,8 @@ import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Hashtable;
public class SpectralDisplayPanel extends JPanel implements Listener<ComplexBuffer>, ISourceEventProcessor, IDFTWidthChangeProcessor
public class SpectralDisplayPanel extends JPanel implements Listener<ReusableComplexBuffer>, ISourceEventProcessor,
IDFTWidthChangeProcessor
{
private static final long serialVersionUID = 1L;
@@ -412,9 +413,10 @@ public class SpectralDisplayPanel extends JPanel implements Listener<ComplexBuff
* Complex sample buffer receive method
*/
@Override
public void receive(ComplexBuffer sampleBuffer)
public void receive(ReusableComplexBuffer reusableComplexBuffer)
{
mDFTProcessor.receive(sampleBuffer);
mDFTProcessor.receive(reusableComplexBuffer.incrementUserCount());
reusableComplexBuffer.decrementUserCount();
}
/**
@@ -435,7 +437,7 @@ public class SpectralDisplayPanel extends JPanel implements Listener<ComplexBuff
mTuner.getTunerController().addListener(this);
//Register the dft processor to receive samples from the tuner
mTuner.getTunerController().addComplexBufferListener(mDFTProcessor);
mTuner.getTunerController().addBufferListener(mDFTProcessor);
mSpectrumPanel.setSampleSize(mTuner.getSampleSize());
@@ -458,7 +460,7 @@ public class SpectralDisplayPanel extends JPanel implements Listener<ComplexBuff
mTuner.getTunerController().removeListener(this);
//Deregister the dft processor from receiving samples
mTuner.getTunerController().removeComplexBufferListener(mDFTProcessor);
mTuner.getTunerController().removeBufferListener(mDFTProcessor);
mTuner = null;
}
}