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Memory/CPU performance improvement and Audio/Mixer source restructuring

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Converted to use float primitives and to keep samples in buffer format until the sample rate is decimated to 48kHz.  
Added new non-recursive, CIC decimation filter -- untested

Updated sound card/mixer input source management.  Now testing for mono/stereo support for each card and limiting channel choices accordingly.  Separated the mixersource into a ComplexMixer and and SimplexMixerSource.  The ComplexMixer is used for sound card based tuners like the funcube.  The SimplexMixerSource is used for demodulated sound card inputs.

Interfaces for sample handling - standardized on using 'Complex' to indicate I/Q samples and 'Simplex' to indicate demodulated float samples.  The processing chain now accepts either a decimated (48k) list of complex samples from a tuner channel source, or a 48k simplex buffer (array of demodulated float samples).

Resolved issue with HackRF tuner not applying tuner configuration information.
This commit is contained in:
dennis.sheirer
2014-10-26 10:11:30 +00:00
parent 0ad710fea2
commit e61c3a891c
71 changed files with 1754 additions and 619 deletions
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9
src/source/tuner/hackrf/HackRFTuner.java
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@@ -26,6 +26,7 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sample.Listener;
import sample.complex.ComplexBuffer;
import source.SourceException;
import source.tuner.Tuner;
import source.tuner.TunerChannel;
@@ -102,7 +103,7 @@ public class HackRFTuner extends Tuner
@Override
public void apply( TunerConfiguration config ) throws SourceException
{
mLog.error( "B100 Tuner - can't apply tuner configuration" );
mController.apply( config );
}
@Override
@@ -128,7 +129,7 @@ public class HackRFTuner extends Tuner
public void releaseChannel( TunerChannelSource source )
{
/* Unregister for receiving samples */
removeListener( (Listener<Float[]>)source );
removeListener( (Listener<ComplexBuffer>)source );
/* Tell the controller to release the channel and cleanup */
if( source != null )
@@ -153,13 +154,13 @@ public class HackRFTuner extends Tuner
}
@Override
public void addListener( Listener<Float[]> listener )
public void addListener( Listener<ComplexBuffer> listener )
{
mController.addListener( listener );
}
@Override
public void removeListener( Listener<Float[]> listener )
public void removeListener( Listener<ComplexBuffer> listener )
{
mController.removeListener( listener );
}