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Resolves #393 - Adds support for recording demodulated (raw) bitstream

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buffers.  None of the decoders currently support this yet, but the P25
will be updated to provide bitstream output for recording.

Renames the ReusableBuffer class to ReusableFloatBuffer for
consistency.
This commit is contained in:
Denny
2018-08-11 08:02:58 -04:00
parent d7e018f66e
commit 5f8f2ec330
64 changed files with 936 additions and 407 deletions
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10
src/main/java/io/github/dsheirer/dsp/fsk/LTRDecoder.java
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@@ -23,7 +23,7 @@ import io.github.dsheirer.dsp.filter.fir.real.RealFIRFilter2;
import io.github.dsheirer.dsp.filter.fir.remez.RemezFIRFilterDesigner;
import io.github.dsheirer.dsp.symbol.ISyncDetectListener;
import io.github.dsheirer.sample.Listener;
import io.github.dsheirer.sample.buffer.ReusableBuffer;
import io.github.dsheirer.sample.buffer.ReusableFloatBuffer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@@ -43,7 +43,7 @@ import org.slf4j.LoggerFactory;
* adjustment may not fully compensate for mis-tuned signals and may result in missed decodes of idle bursts. However,
* the DC filter will track a mis-tuned signal to baseband quickly upon a continuous transmission.
*/
public class LTRDecoder implements Listener<ReusableBuffer>, ISyncDetectListener, ISyncStateListener
public class LTRDecoder implements Listener<ReusableFloatBuffer>, ISyncDetectListener, ISyncStateListener
{
private final static Logger mLog = LoggerFactory.getLogger(LTRDecoder.class);
@@ -148,10 +148,10 @@ public class LTRDecoder implements Listener<ReusableBuffer>, ISyncDetectListener
* @param buffer containing 8.0 kHz unfiltered FM demodulated audio samples with sub-audible LTR signalling.
*/
@Override
public void receive(ReusableBuffer buffer)
public void receive(ReusableFloatBuffer buffer)
{
ReusableBuffer dcFiltered = mDCFilter.filter(buffer);
ReusableBuffer lowPassFiltered = mLowPassFilter.filter(dcFiltered);
ReusableFloatBuffer dcFiltered = mDCFilter.filter(buffer);
ReusableFloatBuffer lowPassFiltered = mLowPassFilter.filter(dcFiltered);
for(float sample : lowPassFiltered.getSamples())
{