/*

 * QuickTime for Java SDK Sample Code

 *

 * Usage subject to restrictions in SDK License Agreement

 * Copyright: © 2000 Apple Computer, Inc.

 */

import quicktime.io.*;

import quicktime.app.display.*;

import quicktime.app.sg.*;

import quicktime.streaming.*;

import quicktime.*;

import quicktime.std.*;

import quicktime.qd.*;

import quicktime.app.anim.*;

/* SimplePres- this class uses a simple approach to creating a Broadcaster (Presentation) from a specified QT File 

 * object.  It also uses the utility class Presentation Drawer to handle drawing operations within the QTCanvas */

public class SimplePres {

    public static final int kDefaultPresTimeScale = 600;    // the default time scale of the Presentation

    /* Constructor- creates a new presentation object from a file and a new Presentation drawer */ 

    SimplePres (QTFile file, QTCanvas canvas) throws QTException {

        newPresFromFile (file);

        pDrawer = new PresentationDrawer(pres);

        QDGraphics gw = new QDGraphics( new QDRect( BroadcastDrawer.WIDTH, BroadcastDrawer.HEIGHT ));

        showSettings(); // shows the settings dialog

    }

    /* Creates a new presentation object from a QTFile using default settings for the MediaParams and PresParams */

    public void newPresFromFile( QTFile f ) {

        try {

            MediaParams medParams = new MediaParams();

            PresParams presParams = new PresParams( kDefaultPresTimeScale, QTSConstants.kQTSSendMediaFlag | 

                    QTSConstants.kQTSAutoModeFlag | QTSConstants.kQTSDontShowStatusFlag, medParams );

            pres = Presentation.fromFile( f, presParams );  

        }

        catch (QTException e) {

            e.printStackTrace();

        }

    }

    /** Shows the settings dialog that allows you to specify the input source, codecs, and packetizer 

      * for the broadcast and prerolls the broadcast

      */

    public void showSettings( ) {

        try {

            SettingsDialog dialog = new SettingsDialog(pres);

            pres.preroll();

        } catch (QTException e) {

            e.printStackTrace();

        }

    }

    /* starts the broadcast and the drawing task */

    public void startBroadcast() {

        try {

            pres.start();

            pDrawer.startTasking();

        } catch (QTException e) {

            e.printStackTrace();

        }

    }

    /* stops the broadcast and the drawing task */

    public void stopBroadcast() {

        try {

            pres.stop();

            pDrawer.stopTasking();

        } catch (QTException e) {

            e.printStackTrace();

        }

    }

/* ---- Protected data members ---- */  

    PresentationDrawer  pDrawer = null;

    Presentation        pres = null;

}