/*

    File:       SGDataProcDemo

    Description:<Description Here>

    Author:     TJ

    Copyright:  © Copyright 2002 Apple Computer, Inc. All rights reserved.

    Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.

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                WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED

                WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR

                PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN

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    Change History (most recent first):

*/

import java.awt.*;

import java.awt.event.*;

import quicktime.qd.*;

import quicktime.*;

import quicktime.util.*;

import quicktime.io.*;

import quicktime.std.StdQTConstants;

import quicktime.std.image.CodecComponent;

import quicktime.std.sg.*;

import quicktime.std.image.*;

import quicktime.app.sg.SGDrawer;

import quicktime.app.image.ImagePresenter;

import quicktime.std.movies.*;

import quicktime.app.display.QTCanvas;

import quicktime.std.StdQTException;

import quicktime.QTException;

public class SGDataProcDemo extends Frame implements WindowListener, SGDataProc, Errors {   

    static final int kWidth = 320;

    static final int kHeight = 240;

    private QTCanvas        targetQTCanvas;

        private DSequence       myDSequence = null;

        private QDRect          targetRect = new QDRect(kWidth, kHeight);

        private SGVideoChannel      sgVideo = null;

    public static void main (String args[]) {

    try {

        SGDataProcDemo sgDataProcDemo = new SGDataProcDemo("QTJava Sequence Grabber DataProc");

        sgDataProcDemo.show();

        sgDataProcDemo.toFront();

        } catch (Exception e) {

            e.printStackTrace();

            QTSession.close();

        }

    }

    SGDataProcDemo (String title) {

        super (title);

        try {       

            QTSession.open();       

                        System.out.println ("Make sure that you have connected a video capturing device or SoftVidig is installed");

                        // Create and configure the canvas

            targetQTCanvas = new QTCanvas(QTCanvas.kPerformanceResize, .5F ,.5F);

                        targetQTCanvas.clientChanged (new Dimension (kWidth, kHeight));

            add ("Center", targetQTCanvas);

                        pack();

            Insets insets = getInsets();

            setBounds (0, 0, (insets.left + insets.right + kWidth), (insets.top + insets.bottom + kHeight));

            addNotify();

            addWindowListener(this);

                        setResizable(false);

        } catch (QTException ee) {

            ee.printStackTrace();

            QTSession.close();

        }

    }

    public void windowClosing (WindowEvent e) {

        QTSession.close();

        dispose();

    }

        // These aren't of interest, but we needed to impliment them for the

        // WindowListener interface.

    public void windowIconified (WindowEvent e) {}  

    public void windowDeiconified (WindowEvent e) {}

    public void windowActivated (WindowEvent e) {}

    public void windowDeactivated (WindowEvent e) {}

    public void windowClosed (WindowEvent e) { 

        System.exit(0);

    }

    public void windowOpened (WindowEvent e) {

        try{    

                        // Configure the SequenceGrabber.

            SequenceGrabber sgGrabber = new SequenceGrabber();

                        // Call our execute method with the raw data

                        sgGrabber.setDataProc(this);

                        // Create the video channel for for the sequence grabber.

            sgVideo = new SGVideoChannel(sgGrabber);

            sgVideo.settingsDialog ();

            sgVideo.setBounds (targetRect);

            sgVideo.setUsage ( StdQTConstants.seqGrabRecord );

                        // This demo doesn't use the preview, but it will record.

            sgGrabber.prepare(false,true);

                        // You need to create a SGDrawer for the video channel in order for the DataProc to be called.

                        SGDrawer sgDrawer = new SGDrawer(sgVideo);

                        // Don't make a Movie.

                        sgGrabber.setDataOutput(null,StdQTConstants.seqGrabDontMakeMovie);

                        // Start the sequence grabber.

                        sgGrabber.startRecord();

                        // Start tasking the SGDrawer so that our DataProc will be called.

                        sgDrawer.startTasking();

        } catch (QTException ee) {

            ee.printStackTrace();

            QTSession.close();

        }

    }

        // Sequence Graber DataProc

    public int execute(SGChannel chan, QTPointerRef dataToWrite, int offset, int chRefCon, int time, int writeType) {

            if(chan.getClass().getName().equals("quicktime.std.sg.SGVideoChannel") && writeType == StdQTConstants.seqGrabWriteAppend) {

                //Wrap the data with a RawEncodedImage Object

                RawEncodedImage encodedImage = RawEncodedImage.fromQTPointer(dataToWrite);

               try {

                    //Only the first time the DataProc's execute is called with an image we setup the Decompression sequence.

                    if(myDSequence == null) {

                       // targetGraphics is the QDGraphics port will will be decompressing the image to.

                        QDGraphics targetGraphics = targetQTCanvas.getPort();

                        // Get the imageDescription of the source image.

                        ImageDescription sgImageDescription = sgVideo.getImageDescription();

                        // sourceRect is the size of the image being captured.

                        QDRect  sourceRect = sgImageDescription.getBounds();

                        // transformationMatix is the matrix that represents the trasformation of the image from the 

                        // image description from the sequence grabber source to the QuickDraw port.

                        Matrix transformationMatix = new Matrix();

                        transformationMatix.rect(sourceRect,targetGraphics.getPortRect());                       

                        //Setup the decompression sequence passing in the first image as a sample image.

                        myDSequence = new DSequence(sgImageDescription, encodedImage, targetGraphics, sourceRect, transformationMatix, null, 0, StdQTConstants.codecNormalQuality, CodecComponent.bestSpeedCodec);

                    }

                    //Decompress the image to the targetGraphics

                    myDSequence.decompressFrame(encodedImage,0);

               } catch(StdQTException e) {

                    e.printStackTrace();

                } catch(QTException e) {

                    e.printStackTrace();

                }

            }

            return 0;

    }

}