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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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8
src/decode/ltrstandard/LTRStandardDecoder.java
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@@ -18,7 +18,7 @@
package decode.ltrstandard;
import message.MessageDirection;
import sample.Listener;
import sample.simplex.SimplexSampleListener;
import source.Source.SampleType;
import alias.AliasList;
import bits.MessageFramer;
@@ -73,7 +73,7 @@ public class LTRStandardDecoder extends Decoder
mDCRemovalFilter = new DCRemovalFilter2( sDC_REMOVAL_RATIO );
mDemodulator.addListener( mDCRemovalFilter );
mDCRemovalFilter.setListener( this.getFloatReceiver() );
mDCRemovalFilter.setListener( this.getSimplexReceiver() );
}
mLTRFSKDecoder = new LTRFSKDecoder();
@@ -88,7 +88,7 @@ public class LTRStandardDecoder extends Decoder
}
else
{
this.addFloatListener( mLTRFSKDecoder );
this.addSimplexSampleListener( mLTRFSKDecoder );
}
if( direction == MessageDirection.OSW )
@@ -118,7 +118,7 @@ public class LTRStandardDecoder extends Decoder
}
@Override
public void addUnfilteredFloatListener( Listener<Float> listener )
public void addUnfilteredSimplexSampleListener( SimplexSampleListener listener )
{
if( mDemodulator != null )
{