capturedevicemanagertest.java

FMJ（freedom media for java)是java视频开发的新选择

package net.sf.fmj.test.compat.misc;

import java.io.IOException;
import java.util.Vector;

import javax.media.CaptureDeviceInfo;
import javax.media.CaptureDeviceManager;
import javax.media.Format;
import javax.media.format.RGBFormat;

import junit.framework.TestCase;

/**
 * 
 * @author Ken Larson
 *
 */
public class CaptureDeviceManagerTest extends TestCase
{

	public void testCaptureDeviceManager()
	{
		final Vector vTest = new Vector();

		assertCaptureDeviceInfoVectorEquals(vTest, CaptureDeviceManager.getDeviceList(null));
		
		final Format[] f1s = new Format[]{new RGBFormat()};
		assertNotEquals(new CaptureDeviceInfo("abc", null, new Format[]{}),
				new CaptureDeviceInfo("abc", null, new Format[]{}));
		assertNotEquals(new CaptureDeviceInfo("abc", null, f1s),
				new CaptureDeviceInfo("abc", null, f1s));	// strange
		
		CaptureDeviceInfo i1 = new CaptureDeviceInfo("abc", null, f1s);
		assertNotEquals(i1, i1);	// strange
		
		
		
		CaptureDeviceManager.addDevice(i1);
		vTest.add(i1);

		assertCaptureDeviceInfoVectorEquals(vTest, CaptureDeviceManager.getDeviceList(null));
		assertCaptureDeviceInfoVectorEquals(vTest, CaptureDeviceManager.getDeviceList(new RGBFormat()));

		
		CaptureDeviceManager.removeDevice(i1);
		vTest.remove(i1);
		
		assertCaptureDeviceInfoVectorEquals(vTest, CaptureDeviceManager.getDeviceList(null));

		
		try
		{
			CaptureDeviceManager.commit();
		} catch (IOException e)
		{
			e.printStackTrace();	// strange, doesn't throw this ever.  Just prints to standard output.
			assertTrue(false);
		}
		

	}
	private void assertNotEquals(Object a, Object b)
	{	if (a == null && b == null)
			assertFalse(true);
		else if (a == null || b == null)
			return;
			
		assertFalse(a.equals(b));
	}
	
	private void dumpCaptureDeviceManager()
	{
		final Vector v = CaptureDeviceManager.getDeviceList(null);
		for (int i = 0; i < v.size(); ++i)
		{
			final Object o = v.get(i);
			final CaptureDeviceInfo captureDeviceInfo = (CaptureDeviceInfo) o;
			System.out.println("captureDeviceInfo: " + captureDeviceInfo.getName());
		}
	}
	private void assertCaptureDeviceInfoVectorEquals(Vector v1, Vector v2)
	{
		assertEquals(v1 == null, v2 == null);
		if (v1 == null)
			return;
		
		assertEquals(v1.size(), v2.size());
		for (int j = 0; j < v1.size(); ++j)
		{
			final CaptureDeviceInfo s1 = (CaptureDeviceInfo) v1.get(j);
			final CaptureDeviceInfo s2 = (CaptureDeviceInfo) v2.get(j);
			assertTrue(s1 == s2);
			//assertEquals(s1, s2);
		}
	}
}