camerademo.java

j2me源代码

/*
 *
 * Copyright (c) 2007, Sun Microsystems, Inc.
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *  * Neither the name of Sun Microsystems nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import java.io.*;
import java.util.Date;
import java.util.Enumeration;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.media.*;
import javax.microedition.media.control.VideoControl;
import javax.microedition.amms.*;
import javax.microedition.amms.control.camera.*;
import javax.microedition.io.file.*;
import javax.microedition.io.*;


public class CameraDemo extends MIDlet 
           implements CommandListener, ItemStateListener{
    
    private Player player;
    private CameraControl camCtrl = null;
    private VideoControl vidCtrl = null;
    private ExposureControl expCtrl = null;
    private FlashControl flsCtrl = null;
    private FocusControl fcsCtrl = null;
    private ZoomControl zomCtrl = null;
    private SnapshotControl snpCtrl = null;

    private Command exitCommand = new Command("Exit", Command.ITEM, 1);
    private Command backCommand = new Command("Back", Command.BACK, 1);
    private Command backToBrowserCommand = 
                                           new Command("Back", Command.BACK, 1);
     private Command deleteImageFile = 
                                           new Command("Delete from disk", Command.ITEM, 1);
    private final Command snapCommand = 
                                       new Command("Snapshot", Command.STOP, 1);
    private final Command stopShottingCommand = 
                                       new Command("Stop Shooting", Command.ITEM, 1);
    private final Command saveSnapCommand = 
                                       new Command("Save it", Command.STOP, 1);
    private final Command deleteSnapCommand = 
                                       new Command("Delete it", Command.ITEM, 1);
    private final Command changeExposureCommand =
                          new Command("Choose exposure modes", Command.ITEM, 3);
    private final Command enabledShutterFeedbackCommand =
                        new Command("Enable shutter feedback", Command.ITEM, 2);
    private final Command disabledShutterFeedbackCommand =
                       new Command("Disable shutter feedback", Command.ITEM, 2);
    private final Command setSupportedF_StopsCommand =
                           new Command("Change F_Stop number", Command.ITEM, 4);
    private final Command setFlashModeCommand =
                           new Command("Set flash mode", Command.ITEM, 5);
    private final Command setSnapshotCommand =
                           new Command("Snapshot setting", Command.ITEM, 1);
    private final Command viewGalleryCommand =
                           new Command("View gallery", Command.ITEM, 6);
    private final Command displayCommand =
                           new Command("Display", Command.ITEM, 6);
    private final Command setFocusCommand =
                           new Command("Focus settings", Command.ITEM, 7);
    private final Command setZoomCommand =
                           new Command("Zoom settings", Command.ITEM, 8);
                           

    private Display display;
    private Form vidForm;
    private Form snapForm;
    private Item videoItem;
    private ChoiceGroup exposureModes;
    private Form exposureModesForm;
    private ChoiceGroup F_StopsCG;
    private Form supportedF_StopsForm;
    private ChoiceGroup flashModes;
    private ChoiceGroup focusModes;
    private ChoiceGroup zoomOptModes;
    private ChoiceGroup zoomDigModes;
    private Form flashModesForm;
    private Form focusModesForm;
    private Form zoomModesForm;
    private String focusSupportedModes[];
    private int focusModesInt[];
    private String zoomOptSupportedModes[];
    private int zoomOptModesInt[];
    private String zoomDigSupportedModes[];
    private int zoomDigModesInt[];
    private List browser;
    private Form imageViewer;
    private FileConnection currImage;
    
    private Form snapshotSettingsForm;
    private ChoiceGroup snapSetDisOrSave;
    private String[] snapSetOption = {"Display picture on screen",
                                       "Save picture to file"};
    private ChoiceGroup snapSetFreezeOrConfirm;
    private String[] snapSetFreezeOption = {"Freeze the viewfinder",
                                             "Freeze and confirm",
                                             "Save without freezing"};
    private TextField burstNum;
    private int NumOfPic = -2;
    private boolean savedMessageAppear = false;
                                       
    
    private static String[] flashAllModes = {"OFF",
                                              "AUTO",
                                              "AUTO_WITH_REDEYEREDUCE",
                                              "FORCE",
                                              "FORCE_WITH_REDEYEREDUCE",
                                              "FILLIN"
    };

    /* separator character as defined by FC specification */
    private final static char   SEP = '/';
    
    private String PHOTOS_DIR = null;

    public CameraDemo() {
        vidForm = new Form("Camera Player");
        display = Display.getDisplay(this);
        display.setCurrent(vidForm);
        vidForm.addCommand(exitCommand);
        vidForm.setCommandListener(this);
        
        try {           
            player = Manager.createPlayer("capture://video");
            player.prefetch();
            player.realize();
            
            vidCtrl = (VideoControl)player.getControl(
                "VideoControl");
            if (vidCtrl != null) {
                videoItem = (Item)vidCtrl.initDisplayMode(VideoControl.USE_GUI_PRIMITIVE, null);
                vidCtrl.setDisplaySize(140, 140);
                vidForm.append(videoItem);
            } else {
                System.out.println("Error: Can not create VideoControl");
                return;
            }
            camCtrl = (CameraControl)player.getControl(
                "javax.microedition.amms.control.camera.CameraControl");
            if (camCtrl != null) {
                vidForm.addCommand(snapCommand);
                vidForm.addCommand(changeExposureCommand);
                vidForm.addCommand(enabledShutterFeedbackCommand);
            }
            expCtrl = (ExposureControl)player.getControl(
                "javax.microedition.amms.control.camera.ExposureControl");
            if (expCtrl != null) {
                vidForm.addCommand(setSupportedF_StopsCommand);
            }
            flsCtrl = (FlashControl)player.getControl(
                "javax.microedition.amms.control.camera.FlashControl");
            if (flsCtrl != null) {
                vidForm.addCommand(setFlashModeCommand);
            }
            fcsCtrl = (FocusControl)player.getControl(
                "javax.microedition.amms.control.camera.FocusControl");
            if (fcsCtrl != null) {
                vidForm.addCommand(setFocusCommand);
            }
            zomCtrl = (ZoomControl)player.getControl(
                "javax.microedition.amms.control.camera.ZoomControl"); 
            if (zomCtrl != null) {
                vidForm.addCommand(setZoomCommand);
            }
            snpCtrl = (SnapshotControl)player.getControl(
                "javax.microedition.amms.control.camera.SnapshotControl");
            if (snpCtrl != null) {
                vidForm.addCommand(setSnapshotCommand);
                vidForm.addCommand(viewGalleryCommand);
                vidForm.addCommand(stopShottingCommand);
            }
        } catch (MediaException me) {
            me.printStackTrace();
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }
    }

    public void startApp() {
        try {
            player.start();
        } catch (MediaException me) {
            me.printStackTrace();
        }
    }

    public void pauseApp() {
        if (camCtrl != null) {
            stopShooting();
        }
        try {
            player.stop();
        } catch (MediaException me) {
            me.printStackTrace();
        }
        
    }

    public void destroyApp(boolean unconditional) {
        closePlayer();
        notifyDestroyed();
    }

    /*
     * Respond to commands, including back
     */
    public void commandAction(Command c, Displayable s) {
        if (savedMessageAppear == true && vidForm.size() > 1) {
            vidForm.delete(vidForm.size() - 1);
            savedMessageAppear = false;
        }
        if (c == backCommand) {
            if (snapshotSettingsForm != null && 
                        snapshotSettingsForm.isShown() && 
                        snapSetFreezeOrConfirm.getSelectedIndex() == 2) {
                NumOfPic = Integer.parseInt(burstNum.getString());                
            } else  if (focusModesForm != null &&  focusModesForm.isShown()) {