#296 APCO25 Phase II Decoder Implementation (#589)

P25 Phase 2 Decoder implementation.

src/main/java/io/github/dsheirer/source/tuner/manager/PassThroughSourceManager.java

@@ -0,0 +1,108 @@
+/*******************************************************************************
+ * sdr-trunk
+ * Copyright (C) 2014-2019 Dennis Sheirer
+ *
+ * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by  the Free Software Foundation, either version 3 of the License, or  (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful,  but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License  along with this program.
+ * If not, see <http://www.gnu.org/licenses/>
+ *
+ ******************************************************************************/
+
+package io.github.dsheirer.source.tuner.manager;
+
+import io.github.dsheirer.sample.Listener;
+import io.github.dsheirer.source.SourceEvent;
+import io.github.dsheirer.source.SourceException;
+import io.github.dsheirer.source.tuner.TunerController;
+import io.github.dsheirer.source.tuner.channel.ChannelSpecification;
+import io.github.dsheirer.source.tuner.channel.PassThroughChannelSource;
+import io.github.dsheirer.source.tuner.channel.TunerChannel;
+import io.github.dsheirer.source.tuner.channel.TunerChannelSource;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.SortedSet;
+import java.util.TreeSet;
+
+/**
+ *
+ */
+public class PassThroughSourceManager extends ChannelSourceManager
+{
+    private final static Logger mLog = LoggerFactory.getLogger(PassThroughSourceManager.class);
+    private TunerController mTunerController;
+    private SortedSet<TunerChannel> mTunerChannels = new TreeSet<>();
+
+    public PassThroughSourceManager(TunerController tunerController)
+    {
+        mTunerController = tunerController;
+    }
+
+    @Override
+    public SortedSet<TunerChannel> getTunerChannels()
+    {
+        return mTunerChannels;
+    }
+
+    @Override
+    public int getTunerChannelCount()
+    {
+        return mTunerChannels.size();
+    }
+
+    @Override
+    public TunerChannelSource getSource(TunerChannel tunerChannel, ChannelSpecification channelSpecification)
+    {
+        PassThroughChannelSource channelSource = new PassThroughChannelSource(new SourceEventProxy(),
+                mTunerController, tunerChannel);
+
+        mLog.debug("Returning a pass through channel");
+        mTunerChannels.add(tunerChannel);
+
+        return channelSource;
+    }
+
+    @Override
+    public void process(SourceEvent event) throws SourceException
+    {
+        switch(event.getEvent())
+        {
+            case REQUEST_START_SAMPLE_STREAM:
+                if(event.hasSource() && event.getSource() instanceof PassThroughChannelSource)
+                {
+                    mTunerController.addBufferListener((PassThroughChannelSource)event.getSource());
+                }
+                break;
+            case REQUEST_STOP_SAMPLE_STREAM:
+                if(event.hasSource() && event.getSource() instanceof PassThroughChannelSource)
+                {
+                    mTunerController.removeBufferListener((PassThroughChannelSource)event.getSource());
+                }
+                break;
+            default:
+                mLog.debug("Got source event: " + event);
+        }
+    }
+
+    public class SourceEventProxy implements Listener<SourceEvent>
+    {
+        @Override
+        public void receive(SourceEvent sourceEvent)
+        {
+            try
+            {
+                process(sourceEvent);
+            }
+            catch(SourceException se)
+            {
+                mLog.error("Error", se);
+            }
+        }
+    }
+}