V4l4jDriver.java

package com.github.sarxos.webcam.ds.v4l4j;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.github.sarxos.webcam.WebcamDevice;
import com.github.sarxos.webcam.WebcamDriver;
import com.github.sarxos.webcam.ds.v4l4j.impl.VideoDeviceFilenameFilter;

/**
 * Capture driver for V4L4J framework. For more details on V4L4J please check <a
 * href="http://code.google.com/p/v4l4j">http://code.google.com/p/v4l4j</a>
 * 
 * @author Bartosz Firyn (sarxos)
 */
public class V4l4jDriver implements WebcamDriver
{
	
	/**
	 * Logger.
	 */
	private static final Logger LOG = LoggerFactory.getLogger( V4l4jDriver.class );
	
	/**
	 * File filter used to find /dev/videoN files.
	 */
	private static final VideoDeviceFilenameFilter VIDEO_FILE_FILTER = new VideoDeviceFilenameFilter();
	
	/**
	 * Initialize customized V4L4J libraries.
	 */
	static
	{/*
		try
		{
			Class.forName( "au.edu.jcu.v4l4j.V4L4J" );
			V4L4J.init();
		}
		catch ( ClassNotFoundException e )
		{
			LOG.warn( "Modified V4L4J has not been found in classpath" );
		}*/
	}
	
	@Override
	public List<WebcamDevice> getDevices()
	{
		
		List<WebcamDevice> devices = new ArrayList<WebcamDevice>();
		File[] vfiles = VIDEO_FILE_FILTER.getVideoFiles();
		
		if ( LOG.isDebugEnabled() )
		{
			for ( File vfile : vfiles )
			{
				LOG.debug( "Video file detected {}", vfile );
			}
		}
		
		for ( File vfile : vfiles )
		{
			devices.add( new V4l4jDevice( vfile ) );
		}
		
		return devices;
	}
	
	@Override
	public boolean isThreadSafe()
	{
		return false;
	}
	
	@Override
	public String toString()
	{
		return getClass().getSimpleName();
	}
}