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Resolves #249 - removes the state monitor runnable from the channel

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state and replaces it with a processing chain heartbeat that is generated
by the sample source.

Previously, the state monitor was running on a separate thread and this
was causing multi-threading issues.  With this update, all channel state
operations (and all module operations) occur on the source's buffer
processing thread.
This commit is contained in:
Denny
2017-07-22 05:42:13 -04:00
parent b9be6f43e0
commit be62ae0459
11 changed files with 892 additions and 732 deletions
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30
src/source/tuner/TunerChannelSource.java
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@@ -18,6 +18,8 @@
******************************************************************************/
package source.tuner;
import channel.heartbeat.Heartbeat;
import channel.heartbeat.IHeartbeatProvider;
import dsp.filter.FilterFactory;
import dsp.filter.Window.WindowType;
import dsp.filter.cic.ComplexPrimeCICDecimate;
@@ -58,6 +60,7 @@ public class TunerChannelSource extends ComplexSource implements IFrequencyChang
private static int CHANNEL_RATE = 48000;
private static int CHANNEL_PASS_FREQUENCY = 12000;
private static final Heartbeat HEARTBEAT = new Heartbeat();
private OverflowableTransferQueue<ComplexBuffer> mBuffer;
@@ -66,6 +69,7 @@ public class TunerChannelSource extends ComplexSource implements IFrequencyChang
private Oscillator mMixer;
private ComplexPrimeCICDecimate mDecimationFilter;
private Listener<ComplexBuffer> mListener;
private Listener<Heartbeat> mHeartbeatListener;
private IFrequencyChangeProcessor mFrequencyChangeProcessor;
private DownstreamProcessor mDownstreamFrequencyEventProcessor = new DownstreamProcessor();
private ScheduledFuture<?> mTaskHandle;
@@ -352,6 +356,25 @@ public class TunerChannelSource extends ComplexSource implements IFrequencyChang
return mDownstreamFrequencyEventProcessor.getFrequencyChangeListener();
}
/**
* Registers the listener to receive heartbeats from this source.
* @param listener to receive heartbeats
*/
@Override
public void setHeartbeatListener(Listener<Heartbeat> listener)
{
mHeartbeatListener = listener;
}
/**
* Removes the currently registered heartbeat listener
*/
@Override
public void removeHeartbeatListener()
{
mHeartbeatListener = null;
}
/**
* Managers frequency change requests and notifications from/to any downstream component. Downstream
* components are those that receive samples from this tuner channel source. These downstream components will be
@@ -477,6 +500,13 @@ public class TunerChannelSource extends ComplexSource implements IFrequencyChang
{
if(mProcessing)
{
//Send a heartbeat every time this runs to allow downstream components to perform periodic
//state monitoring functions on this thread
if(mHeartbeatListener != null)
{
mHeartbeatListener.receive(HEARTBEAT);
}
mBuffer.drainTo(mSampleBuffers, 20);
for(Buffer buffer : mSampleBuffers)