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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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5
src/dsp/fsk/LTRFSKDecoder.java
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@@ -27,6 +27,7 @@ import java.util.ArrayList;
import java.util.List;
import sample.Listener;
import sample.simplex.SimplexSampleListener;
import dsp.Slicer;
import dsp.Slicer.Output;
import dsp.filter.DCRemovalFilter3;
@@ -36,7 +37,7 @@ import dsp.filter.FloatHalfBandNoDecimateFilter;
import dsp.filter.LTRPulseShapingFilter;
import dsp.filter.SquaringFilter;
public class LTRFSKDecoder implements Listener<Float>, Instrumentable
public class LTRFSKDecoder implements SimplexSampleListener, Instrumentable
{
private FloatHalfBandFilter mHBFilter1;
private FloatHalfBandFilter mHBFilter2;
@@ -104,7 +105,7 @@ public class LTRFSKDecoder implements Listener<Float>, Instrumentable
}
@Override
public void receive( Float sample )
public void receive( float sample )
{
mHBFilter1.receive( sample );
}