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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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6
src/record/wave/FloatWaveRecorder.java
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@@ -28,14 +28,14 @@ import org.slf4j.LoggerFactory;
import record.Recorder;
import record.RecorderType;
import sample.Listener;
import sample.simplex.SimplexSampleListener;
import util.waveaudio.WaveWriter;
import buffer.FloatSampleBufferAssembler;
/**
* Threaded WAVE audio recorder for recording mono float samples to a wave file
*/
public class FloatWaveRecorder extends Recorder implements Listener<Float>
public class FloatWaveRecorder extends Recorder implements SimplexSampleListener
{
private final static Logger mLog =
LoggerFactory.getLogger( FloatWaveRecorder.class );
@@ -129,7 +129,7 @@ public class FloatWaveRecorder extends Recorder implements Listener<Float>
}
@Override
public void receive( Float sample )
public void receive( float sample )
{
mCurrentBuffer.put( sample );