registrydefaults.java

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

package net.sf.fmj.media;

import java.util.ArrayList;
import java.util.List;
import java.util.Vector;

import javax.media.Format;
import javax.media.PackageManager;
import javax.media.format.AudioFormat;
import javax.media.format.RGBFormat;
import javax.media.format.VideoFormat;
import javax.media.format.YUVFormat;
import javax.media.pim.PlugInManager;
import javax.media.protocol.ContentDescriptor;
import javax.media.protocol.FileTypeDescriptor;

import net.sf.fmj.utility.OSUtils;
import net.sf.fmj.utility.PlugInUtility;

/**
 * Defaults for the FMJ registry.  Broken out into fmj, jmf, and third-party.
 * fmj ones are fmj-specific.
 * jmf ones are to duplicate what is in jmf (useful if jmf is in the classpath).
 * third-party ones are those that are not included with fmj but might be in the classpath
 * (like fobs4jmf).
 * The flags give us the flexibility to make the registry the same as JMF's or JMF's + FMJ's, or just FMJ's.
 * Making it the same as JMF's is useful for unit testing.
 * @author Ken Larson
 *
 */
public class RegistryDefaults
{

	public static final int JMF 			= 0x0001;
	public static final int FMJ 			= 0x0002;
	public static final int THIRD_PARTY 	= 0x0004;
	public static final int ALL = JMF | FMJ | THIRD_PARTY;
	

	public static void registerAll(int flags)
	{	
		registerProtocolPrefixList(flags);
		registerContentPrefixList(flags);
		registerPlugins(flags);
	}
	
	public static void unRegisterAll(int flags)
	{	
		unRegisterProtocolPrefixList(flags);
		unRegisterContentPrefixList(flags);
		unRegisterPlugins(flags);
	}
	
	public static void registerProtocolPrefixList(int flags)
	{
		final Vector v = PackageManager.getProtocolPrefixList();
		final List<String> add = protocolPrefixList(flags);
		for (String s : add)
		{
			if (!v.contains(s))
				v.add(s);
		}

		PackageManager.setProtocolPrefixList(v);
		
	}
	
	public static void registerContentPrefixList(int flags)
	{
		final Vector v = PackageManager.getContentPrefixList();
		final List<String> add = contentPrefixList(flags);
		for (String s : add)
		{
			if (!v.contains(s))
				v.add(s);
		}
		
		PackageManager.setContentPrefixList(v);
	}
	
	public static void unRegisterProtocolPrefixList(int flags)
	{
		final Vector v = PackageManager.getProtocolPrefixList();
		final List<String> add = protocolPrefixList(flags);
		for (String s : add)
		{
			if (v.contains(s))
				v.remove(s);
		}

		PackageManager.setProtocolPrefixList(v);
		
	}
	
	public static void unRegisterContentPrefixList(int flags)
	{
		final Vector v = PackageManager.getContentPrefixList();
		final List<String> add = contentPrefixList(flags);
		for (String s : add)
		{
			if (v.contains(s))
				v.remove(s);
		}
		
		PackageManager.setContentPrefixList(v);
	}
	
	
	public static List<String> protocolPrefixList(int flags)
	{
		final List<String> protocolPrefixList = new ArrayList<String>();
	
		if ((flags & JMF) != 0)
		{
			protocolPrefixList.add("javax");
			protocolPrefixList.add("com.sun");
			protocolPrefixList.add("com.ibm");
		}
		if ((flags & FMJ) != 0)
		{
			if (OSUtils.isMacOSX())
			{
				// Quicktime:
				protocolPrefixList.add("net.sf.fmj.qt");
			}
			if (OSUtils.isWindows())
			{
				// DirectShow:
				protocolPrefixList.add("net.sf.fmj.ds");
			}
			if (OSUtils.isLinux())	// TODO: we could add these for other OS's, as gstreamer is cross-platform.
			{
				// GStreamer:
				protocolPrefixList.add("net.sf.fmj.gst");
			}
	
			protocolPrefixList.add("net.sf.fmj");
		}
		if ((flags & THIRD_PARTY) != 0)
		{
			protocolPrefixList.add("com.omnividea");	// FOBS4JMF: may not be in classpath
		}
		
		return protocolPrefixList;
	}
	
	public static List<String> contentPrefixList(int flags)
	{
		final List<String> contentPrefixList = new ArrayList<String>();
		
		if ((flags & JMF) != 0)
		{
			contentPrefixList.add("javax");
			contentPrefixList.add("com.sun");
			contentPrefixList.add("com.ibm");
		}
		if ((flags & FMJ) != 0)
		{
			if (OSUtils.isMacOSX())
			{
				// Quicktime:
				contentPrefixList.add("net.sf.fmj.qt");
			}
			if (OSUtils.isWindows())
			{
				// DirectShow:
				contentPrefixList.add("net.sf.fmj.ds");
			}
			if (OSUtils.isLinux())	// TODO: we could add these for other OS's, as gstreamer is cross-platform.
			{
				// DirectShow:
				contentPrefixList.add("net.sf.fmj.gst");
			}
	
			contentPrefixList.add("net.sf.fmj");
		
		}
		if ((flags & THIRD_PARTY) != 0)
		{
			// none to add
		}
		return contentPrefixList;
	}
	
	

	
	
	public static void registerPlugins(int flags)
	{
		// TODO: if JMF is in the classpath ahead of FMJ, we get:
//		Problem adding net.sf.fmj.media.codec.video.jpeg.Packetizer to plugin table.
//		 Already hash value of 8706141154469562557 in plugin table for class name of com.sun.media.codec.video.jpeg.Packetizer
//		Problem adding net.sf.fmj.media.codec.video.jpeg.DePacketizer to plugin table.
//		 Already hash value of 3049617401990556986 in plugin table for class name of com.sun.media.codec.video.jpeg.DePacketizer
//		Problem adding net.sf.fmj.media.renderer.audio.JavaSoundRenderer to plugin table.
//		 Already hash value of 1262232571547748861 in plugin table for class name of com.sun.media.renderer.audio.JavaSoundRenderer
//		Problem adding net.sf.fmj.media.multiplexer.RTPSyncBufferMux to plugin table.
//		 Already hash value of -2095741743343195187 in plugin table for class name of com.sun.media.multiplexer.RTPSyncBufferMux
		
		
//		 PlugInManager.DEMULTIPLEXER:
		if ((flags & JMF) != 0)
		{
			PlugInManager.addPlugIn("com.ibm.media.parser.video.MpegParser", 
				new Format[] {
					new ContentDescriptor("audio.mpeg"),
					new ContentDescriptor("video.mpeg"),
					new ContentDescriptor("audio.mpeg"),
				}, 
				new Format[] {}, 
				PlugInManager.DEMULTIPLEXER);
			PlugInManager.addPlugIn("com.sun.media.parser.audio.WavParser", 
				new Format[] {
					new ContentDescriptor("audio.x_wav"),
				}, 
				new Format[] {}, 
				PlugInManager.DEMULTIPLEXER);
			PlugInManager.addPlugIn("com.sun.media.parser.audio.AuParser", 
				new Format[] {
					new ContentDescriptor("audio.basic"),
				}, 
				new Format[] {}, 
				PlugInManager.DEMULTIPLEXER);
			PlugInManager.addPlugIn("com.sun.media.parser.audio.AiffParser", 
				new Format[] {
					new ContentDescriptor("audio.x_aiff"),
				}, 
				new Format[] {}, 
				PlugInManager.DEMULTIPLEXER);
			PlugInManager.addPlugIn("com.sun.media.parser.audio.GsmParser", 
				new Format[] {
					new ContentDescriptor("audio.x_gsm"),
				}, 
				new Format[] {}, 
				PlugInManager.DEMULTIPLEXER);
		}
//		 FMJ overrides to come before SUN ones:
// 		 this one needs to be after the audio parsers, otherwise it will be used instead of them in some cases.
//		 TODO: why does the sun one get an NPE?
//		 TODO: this causes audio not to play properly:
		if ((flags & FMJ) != 0)
		{			PlugInManager.addPlugIn("net.sf.fmj.media.parser.RawPushBufferParser", 
						new Format[] {
							new ContentDescriptor("raw"),
						}, 
						new Format[] {}, 
						PlugInManager.DEMULTIPLEXER);
		// end FMJ override.
		}
		if ((flags & JMF) != 0)
		{
			PlugInManager.addPlugIn("com.sun.media.parser.RawStreamParser", 
				new Format[] {
					new ContentDescriptor("raw"),
				}, 
				new Format[] {}, 
				PlugInManager.DEMULTIPLEXER);
			PlugInManager.addPlugIn("com.sun.media.parser.RawBufferParser", 
				new Format[] {
					new ContentDescriptor("raw"),
				}, 
				new Format[] {}, 
				PlugInManager.DEMULTIPLEXER);
			PlugInManager.addPlugIn("com.sun.media.parser.RawPullStreamParser", 
				new Format[] {
					new ContentDescriptor("raw"),
				}, 
				new Format[] {}, 
				PlugInManager.DEMULTIPLEXER);
			PlugInManager.addPlugIn("com.sun.media.parser.RawPullBufferParser", 
				new Format[] {
					new ContentDescriptor("raw"),
				}, 
				new Format[] {}, 
				PlugInManager.DEMULTIPLEXER);
			PlugInManager.addPlugIn("com.sun.media.parser.video.QuicktimeParser", 
				new Format[] {
					new ContentDescriptor("video.quicktime"),
				}, 
				new Format[] {}, 
				PlugInManager.DEMULTIPLEXER);
			PlugInManager.addPlugIn("com.sun.media.parser.video.AviParser", 
				new Format[] {
					new ContentDescriptor("video.x_msvideo"),
				}, 
				new Format[] {}, 
				PlugInManager.DEMULTIPLEXER);
	
	//		 PlugInManager.CODEC:
			PlugInManager.addPlugIn("com.sun.media.codec.audio.mpa.JavaDecoder", 
				new Format[] {