/*
* Copyright © 2012 Nokia Corporation. All rights reserved.
* Nokia and Nokia Connecting People are registered trademarks of Nokia Corporation.
* Oracle and Java are trademarks or registered trademarks of Oracle and/or its
* affiliates. Other product and company names mentioned herein may be trademarks
* or trade names of their respective owners.
* See LICENSE.TXT for license information.
*/
package com.nokia.example.ammscamera;
import java.io.IOException;
import javax.microedition.amms.control.camera.*;
import javax.microedition.lcdui.*;
import javax.microedition.media.*;
import javax.microedition.media.control.VideoControl;
public abstract class TestControl
implements CommandListener, PlayerListener {
public TestControl(CameraMIDlet c) {
snaps = 10;
zoomlevel = 100;
midlet = c;
player = null;
optionsForm = new Form("");
cmdCapture = new Command("Capture", Command.OK, 0);
cmdOptions = new Command("Options", Command.SCREEN, 0);
cmdBack = new Command("Back", Command.BACK, 1);
}
public void setSupported(boolean supp) {
supported = supp;
if (!supported) {
player.deallocate();
player = null;
}
}
public boolean isSupported() {
return supported;
}
public boolean isInitialized() {
return initialized;
}
public void createCameraForm(int key) {
id = key;
try {
player = Manager.createPlayer(midlet.getPlayerType());
player.addPlayerListener(this);
player.realize();
player.prefetch();
videoControl = (VideoControl) player.getControl("VideoControl");
if (videoControl == null) {
midlet.showAlert("Error", "Video Control is null", canvas);
}
canvas = new VideoCanvas(this, videoControl, id);
if (id == midlet.cameracontrol) {
cameraControl = (CameraControl) player.getControl("javax.microedition.amms.control.camera.CameraControl");
setSupported(cameraControl != null);
canvas.setTitle("Camera Control Test");
}
else if (id == midlet.exposurecontrol) {
exposureControl = (ExposureControl) player.getControl("javax.microedition.amms.control.camera.ExposureControl");
setSupported(exposureControl != null);
canvas.setTitle("Exposure Control Test");
}
else if (id == midlet.flashcontrol) {
flashControl = (FlashControl) player.getControl("javax.microedition.amms.control.camera.FlashControl");
setSupported(flashControl != null);
canvas.setTitle("Flash Control Test");
}
else if (id == midlet.focuscontrol) {
focusControl = (FocusControl) player.getControl("javax.microedition.amms.control.camera.FocusControl");
setSupported(focusControl != null);
canvas.setTitle("Focus Control Test");
}
else if (id == midlet.snapshotcontrol) {
snapControl = (SnapshotControl) player.getControl("javax.microedition.amms.control.camera.SnapshotControl");
setSupported(snapControl != null);
if (snapControl != null) {
snapControl.setFilePrefix("snapshotTest");
String time = String.valueOf(System.currentTimeMillis());
snapControl.setFileSuffix(time.substring(0, 5) + ".jpg");
}
canvas.setTitle("Snapshot Control Test");
}
else if (id == midlet.zoomcontrol) {
zoomControl = (ZoomControl) player.getControl("javax.microedition.amms.control.camera.ZoomControl");
setSupported(zoomControl != null);
canvas.setTitle("Zoom Control Test");
}
if (player.getState() == 300) {
player.start();
}
}
catch (IOException ioexception) {
}
catch (MediaException mediaexception) {
}
catch (NullPointerException nullpointerexception) {
}
}
public boolean captureImage() {
try {
imageData = videoControl.getSnapshot("encoding=jpeg");
capturedImage = Image.createImage(imageData, 0, imageData.length);
}
catch (MediaException exc) {
midlet.showAlert("Error", exc.getMessage(), canvas);
return false;
}
catch (SecurityException secExc) {
midlet.showAlert("Security error", secExc.getMessage(), canvas);
return false;
}
catch (NullPointerException exc) {
midlet.showAlert("Null Pointer Error", "Null Pointer - videoControl not working ... ", canvas);
return false;
}
catch (Exception e) {
midlet.showAlert("Error", e.getMessage(), canvas);
return false;
}
return true;
}
public boolean showCapturedImageAfterCapture() {
return true;
}
public void showCapturedImage() {
createImageForm();
if (capturedImage != null) {
imageForm.append(scaleImage(capturedImage, imageForm));
}
imageForm.setTitle("Captured image");
CameraMIDlet.getDisplay().setCurrent(imageForm);
}
public void createImageForm() {
imageForm = new Form("Captured image");
cmdSave = new Command("Save", Command.OK, 0);
imageForm.addCommand(cmdBack);
imageForm.addCommand(cmdSave);
imageForm.setCommandListener(this);
}
/**
* Changes size of image, adapted from
* http://www.developer.nokia.com/Community/Wiki/CS001269_-_Scaling_bitmaps_in_Java_ME
*
* @param sourceImage to be scaled
* @param newImageWidth is the new width of the image
* @param newImageHeight is the new height of the image
*/
private Image scaleImage(Image sourceImage, int newImageWidth, int newImageHeight) {
try {
int srcWidth = sourceImage.getWidth();
int srcHeight = sourceImage.getHeight();
// An array for RGB, with the size of original image)
int rgbSource[] = new int[srcWidth * srcHeight];
// An array for RGB, with the size of scaled image)
int rgb2Scaled[] = new int[newImageWidth * newImageHeight];
// Get the RGB array of source image
sourceImage.getRGB(rgbSource, 0, srcWidth, 0, 0, srcWidth, srcHeight);
int tempScaleRatioWidth;
int tempScaleRatioHeight;
// calculations and bit shift operations to optimize the for loop
tempScaleRatioWidth = ((srcWidth << 16) / newImageWidth);
tempScaleRatioHeight = ((srcHeight << 16) / newImageHeight);
int i = 0;
for (int y = 0; y < newImageHeight; y++) {
for (int x = 0; x < newImageWidth; x++) {
rgb2Scaled[i++] = rgbSource[(srcWidth
* ((y * tempScaleRatioHeight) >> 16))
+ ((x * tempScaleRatioWidth) >> 16)];
}
}
//Create an RGB image from rgbScaled array
return Image.createRGBImage(rgb2Scaled,
newImageWidth, newImageHeight, true);
}
catch (ArithmeticException e) {
// if newImageWidth or newImageHeight was 0, return the orig. image
return sourceImage;
}
}
private Image scaleImage(Image sourceImage, Form targetForm) {
float targetFormWidth = (float) targetForm.getWidth();
float targetFormHeight = (float) targetForm.getHeight() * 0.85f;
float scaleFactor1 = targetFormWidth / (float) sourceImage.getWidth();
float scaleFactor2 = targetFormHeight / (float) sourceImage.getHeight();
float scaleFactor = (scaleFactor1 < scaleFactor2) ? scaleFactor1 : scaleFactor2;
int targetWidth = (int) (sourceImage.getWidth() * scaleFactor);
int targetHeight = (int) (sourceImage.getHeight() * scaleFactor);
return scaleImage(sourceImage, targetWidth, targetHeight);
}
public void commandAction(Command command, Displayable display) {
if (display.equals(optionsForm) && command.equals(cmdBack)) {
SaveOptions();
CameraMIDlet.getDisplay().setCurrent(canvas);
}
else if (display.equals(imageForm) && command.equals(cmdBack)) {
CameraMIDlet.getDisplay().setCurrent(canvas);
}
else if (display.equals(imageForm) && command.equals(cmdSave)) {
new ImageSaver(midlet, imageData, "jpeg", canvas, imageForm);
}
}
public abstract void SaveOptions();
public void playerUpdate(Player p, String event, Object obj) {
switch (p.getState()) {
case 400:
initialized = true;
break;
}
}
public void zoomIn() {
if (zoomControl != null) {
if (-1001 > zoomControl.getMaxDigitalZoom()) {
midlet.showAlert("Zoom Control", "Already zoomed in max amount", canvas);
}
else {
zoomlevel = zoomControl.setDigitalZoom(-1001);
}
}
else {
midlet.showAlert("Zoom Control", "Zoom Not Supported.", canvas);
}
canvas.repaint();
}
protected void zoomOut() {
if (zoomControl != null) {
zoomlevel = zoomControl.setDigitalZoom(-1002);
}
else {
midlet.showAlert("Zoom Control", "Zoom Not Supported.", canvas);
}
canvas.repaint();
}
public void setSnapshotNbr(int s) {
snaps = s;
}
boolean supported;
CameraMIDlet midlet;
Player player;
VideoControl videoControl;
Command cmdCapture;
Command cmdOptions;
Command cmdBack;
Command cmdSave;
Canvas canvas;
Form imageForm;
Form optionsForm;
byte imageData[];
Image capturedImage;
boolean initialized;
int snaps;
int zoomlevel;
int id;
ExposureControl exposureControl;
CameraControl cameraControl;
FlashControl flashControl;
FocusControl focusControl;
SnapshotControl snapControl;
ZoomControl zoomControl;
int width;
int height;
int zoomModes[];
}