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Freedom for Media in Java
There is a newer version: 1.0.2-jitsi
/*
 * Created on 12/10/2004
 */
package net.sf.fmj.media.renderer.video;

import java.util.logging.*;

import javax.media.*;
import javax.media.format.*;

import net.sf.fmj.utility.*;

/**
 * This Renderer is used to log process() calls. Useful for diagnosing whether
 * the Renderer is actually being told to process buffers.
 *
 * @author Warren Bloomer
 *
 */
public class DiagnosticVideoRenderer implements Renderer
{
    private static final Logger logger = LoggerSingleton.logger;

    String name = "Disgnostic Video Renderer";

    boolean started = false;

    Format[] supportedFormats = new Format[] { new RGBFormat(),
            new YUVFormat(), };

    int noFrames = 0;

    public synchronized void close()
    {
        // Nothing to do
    }

    /**
     * Return the control based on a control type for the PlugIn.
     */
    public Object getControl(String controlType)
    {
        try
        {
            Class cls = Class.forName(controlType);
            Object cs[] = getControls();
            for (int i = 0; i < cs.length; i++)
            {
                if (cls.isInstance(cs[i]))
                {
                    return cs[i];
                }
            }
            return null;
        } catch (Exception e)
        { // no such controlType or such control
            return null;
        }
    }

    /**
     * Returns an array of supported controls
     */
    public Object[] getControls()
    {
        // No controls
        return new Control[0];
    }

    public String getName()
    {
        return name;
    }

    /**
     * Lists the possible input formats supported by this plug-in.
     */
    public Format[] getSupportedInputFormats()
    {
        return supportedFormats;
    }

    /*--------------- PlugIn implementation ---------------- */

    /**
     * Opens the plugin
     */
    public void open() throws ResourceUnavailableException
    {
    }

    /**
     * Processes the data and renders it to a component
     */
    public int process(Buffer buffer)
    {
        if ((noFrames % 10) == 0)
        {
            logger.fine("Received frame " + noFrames);
        }
        noFrames++;

        return BUFFER_PROCESSED_OK;
    }

    /**
     * Resets the state of the plug-in. Typically at end of media or when media
     * is repositioned.
     */
    public void reset()
    {
        // Nothing to do
    }

    /**
     * Set the data input format.
     */
    public Format setInputFormat(Format format)
    {
        return format;
    }

    /*--------------- Controls implementation ------------- */

    /*************************************************************************
     * Renderer implementation
     *************************************************************************/
    public void start()
    {
        started = true;
    }

    public void stop()
    {
        started = false;
    }

}