Resolves threading issue in ChannelState.

Resolves issue in tuner controller where controller was not releasing
sourced tuner channels, preventing re-tuning to other frequencies.
Resolves issue with channel timeout on MPT1327 monitored traffic
channels

src/controller/ThreadPoolManager.java

@@ -64,11 +64,13 @@ public class ThreadPoolManager
 		mExecutor.schedule( command, delay, unit );
 	}
 
-	public void cancel( ScheduledFuture<?> task )
+	public boolean cancel( ScheduledFuture<?> task )
 	{
-		task.cancel( true );
+		boolean success = task.cancel( true );
 		
 		mTasks.remove( task );
+		
+		return success;
 	}
 	
 	public int getTaskCount( ThreadType type )

src/controller/channel/Channel.java

@@ -809,8 +809,7 @@ public class Channel extends Configuration
 	{
 		if( mProcessingChain == null )
 		{
-			mProcessingChain = new ProcessingChain( 
-					mResourceManager.getThreadPoolManager() );
+			mProcessingChain = new ProcessingChain();
 			
 			/* Get the optional alias list for the decode modules to use */
 			AliasList aliasList = mResourceManager.getPlaylistManager()
@@ -901,6 +900,8 @@ public class Channel extends Configuration
 	{
 		if( !mEnabled && mProcessingChain != null )
 		{
+			fireChannelEvent( Event.CHANNEL_PROCESSING_STOPPED );
+
 			mProcessingChain.stop();
 
 			if( mChannelType == ChannelType.STANDARD )
@@ -910,8 +911,6 @@ public class Channel extends Configuration
 			}
 
 			mSelected = false;
-			
-			fireChannelEvent( Event.CHANNEL_PROCESSING_STOPPED );
 		}
 	}