org.friendularity.jvision.gui.JVisionLauncher Maven / Gradle / Ivy

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package org.friendularity.jvision.gui;

import org.appdapter.core.log.BasicDebugger;
import org.friendularity.jvision.broker.ImageStreamBroker;
import org.friendularity.jvision.engine.JVisionEngine;
import org.friendularity.jvision.engine.Quitter;

import org.friendularity.jvision.filters.FilterSequence;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;

public class JVisionLauncher extends BasicDebugger implements Quitter {

	private JVisionEngine	myEngine;
	private	Thread			myCamProcThread;
	private DemoFrame		myDemoFrame;
	
	private Boolean			myFlag_QuittingNow  = Boolean.FALSE;	
	private	boolean			myFlag_StopOSGiAfterQuit = false;

	public static void main(String[] args) {
		// Can use this to run-file without bundling, if your IDE/env can setup your java.library.path to point at 
		// the right native libs (either src/main/resources/native/{platform} or the equiv directory under target/)

		JVisionLauncher jvl = new JVisionLauncher(false);
		jvl.attemptInit();
	}
	public JVisionLauncher(boolean flag_stopOSGiAfterQuit) {
		myEngine = JVisionEngine.getDefaultJVisionEngine();
		myDemoFrame = new DemoFrame();
		myDemoFrame.setQuitter(this);
		myFlag_StopOSGiAfterQuit = flag_stopOSGiAfterQuit;
	}
	
	public boolean  attemptInit() {
		boolean connectedOK = myEngine.connect();
		if (connectedOK) {
			FilterSequence fseq = myEngine.getFilterSeq();
			myDemoFrame.setControlledFilterSequence(fseq);
			ImageStreamBroker.getDefaultImageStreamBroker().addImageStreamConsumer(
					JVisionEngine.JVISION_IS_NAME, myDemoFrame);

			myEngine.setQuitter(this);
			return startThread();
		} else {
			return false;
		}
	}
	
	private boolean startThread() { 
		myCamProcThread = new Thread(myEngine);
		myCamProcThread.start();		
		return true;
	}
	public void requestStop(Boolean optionalFlag_stopOSGiAfterQuit) { 
		if (optionalFlag_stopOSGiAfterQuit != null) {
			myFlag_StopOSGiAfterQuit = optionalFlag_stopOSGiAfterQuit;
		}
		// This may have already been done, that's OK.
		setWantsToQuit(true);
	}
	// We're going to try to not use this.
	private void forceStop() { 
		myCamProcThread.interrupt();
	}
	
	@Override public boolean wantsToQuit()
	{
		synchronized(myFlag_QuittingNow)
		{
			return myFlag_QuittingNow;
		}
	}
	
	@Override public void setWantsToQuit(boolean x)
	{
		synchronized(myFlag_QuittingNow)
		{
			myFlag_QuittingNow = new Boolean(x);
		}
		
	}
	@Override public void notifyQuitCompleted() {
		if (myFlag_StopOSGiAfterQuit) { 
			getLogger().info("Now that quit has completed, we will shutdown our OSGi container");
			shutdownOurOSGiContainer();
		}
	}
	private void shutdownOurOSGiContainer() { 
		Bundle anyB = org.osgi.framework.FrameworkUtil.getBundle(getClass());
		BundleContext anyBC = anyB.getBundleContext();
		stopOSGiContainer(anyBC);
	}
	private void stopOSGiContainer(BundleContext bc) { 
		Bundle sysB = bc.getBundle(0);
		getLogger().warn("Asking system bundle to stop(): {}", sysB);
		try {
			sysB.stop();
		} catch (Throwable t) {
			getLogger().error("Caught exception during sys-bundle.stop() request", t);
		}
	}
	

}