/**
* Creates a new JpegInfo object.
*
* @param image DOCUMENT ME!
*/
public JpegInfo(Image image) {
Components = new Object[NumberOfComponents];
compWidth = new int[NumberOfComponents];
compHeight = new int[NumberOfComponents];
BlockWidth = new int[NumberOfComponents];
BlockHeight = new int[NumberOfComponents];
imageobj = image;
imageWidth = image.getWidth(null);
imageHeight = image.getHeight(null);
Comment = "JPEG Encoder Copyright 1998, James R. Weeks and BioElectroMech. ";
getYCCArray();
}
static void GoEnd(JFrame frame, int i) {
Image background = new ImageIcon("image/final_" + i + ".png").getImage();
background =
background.getScaledInstance(frame.getWidth(), frame.getHeight(), Image.SCALE_DEFAULT);
JLabel back = new JLabel();
back.setBounds(0, 0, frame.getWidth(), frame.getHeight());
back.setIcon(new ImageIcon(background));
frame.add(back, 1);
frame.validate();
frame.repaint();
if (i == 1) { // 烤好
Talk.say("你成功的通過了這學期", 1);
Talk.say("這次經驗也讓你對學習產生濃烈的興趣", 1);
Talk.say("讓你大四成為了神，進而順利畢業", 1);
} else if (i == 2) { // 系館
Talk.say("經由你的捐贈", 1);
Talk.say("資訊系逐漸自成一個校區", 1);
Talk.say("而在原系館中庭擺放了一個十倍放大的銅像", 1);
Talk.say("用來紀念資訊系傑出校友─大恩碩像", 1);
} else if (i == 3) { // 出國
Talk.say("你放棄了學業，踏上了桌球國手之路", 1);
Talk.say("過五關斬六將", 1);
Talk.say("終於成為了世界桌球王", 1);
} else if (i == 4) { // 0分 game over
Talk.say("輕輕的我走了", 1);
Talk.say("正如我輕輕地來", 1);
Talk.say("我揮一揮衣袖", 1);
Talk.say("不帶走任何學分", 1);
} else if (i == 5) { // final
Talk.say("你完成了final project", 1);
Talk.say("跟其他同學一起過了OOP", 1);
Talk.say("不過大四還有更嚴苛的挑戰在等著你", 1);
Talk.say("同學！加油吧！", 1);
}
}
/** Update - Method, implements double buffering */
public void update(Graphics g) {
// initialize buffer
if (dbImage == null) {
dbImage = createImage(this.getSize().width, this.getSize().height);
dbg = dbImage.getGraphics();
}
// clear screen in background
dbg.setColor(getBackground());
dbg.fillRect(0, 0, this.getSize().width, this.getSize().height);
// draw elements in background
dbg.setColor(getForeground());
paint(dbg);
// draw image on the screen
g.drawImage(dbImage, 0, 0, this);
}
/*
* This method creates and fills three arrays, Y, Cb, and Cr using the
* input image.
*/
private void getYCCArray() {
int[] values = new int[imageWidth * imageHeight];
int r;
int g;
int b;
int y;
int x;
// In order to minimize the chance that grabPixels will throw an exception
// it may be necessary to grab some pixels every few scanlines and process
// those before going for more. The time expense may be prohibitive.
// However, for a situation where memory overhead is a concern, this may be
// the only choice.
PixelGrabber grabber =
new PixelGrabber(
imageobj.getSource(), 0, 0, imageWidth, imageHeight, values, 0, imageWidth);
MaxHsampFactor = 1;
MaxVsampFactor = 1;
for (y = 0; y < NumberOfComponents; y++) {
MaxHsampFactor = Math.max(MaxHsampFactor, HsampFactor[y]);
MaxVsampFactor = Math.max(MaxVsampFactor, VsampFactor[y]);
}
for (y = 0; y < NumberOfComponents; y++) {
compWidth[y] =
((((imageWidth % 8) != 0)
? (((int) Math.ceil((double) imageWidth / 8.0)) * 8)
: imageWidth)
/ MaxHsampFactor)
* HsampFactor[y];
if (compWidth[y] != ((imageWidth / MaxHsampFactor) * HsampFactor[y])) {
lastColumnIsDummy[y] = true;
}
// results in a multiple of 8 for compWidth
// this will make the rest of the program fail for the unlikely
// event that someone tries to compress an 16 x 16 pixel image
// which would of course be worse than pointless
BlockWidth[y] = (int) Math.ceil((double) compWidth[y] / 8.0);
compHeight[y] =
((((imageHeight % 8) != 0)
? (((int) Math.ceil((double) imageHeight / 8.0)) * 8)
: imageHeight)
/ MaxVsampFactor)
* VsampFactor[y];
if (compHeight[y] != ((imageHeight / MaxVsampFactor) * VsampFactor[y])) {
lastRowIsDummy[y] = true;
}
BlockHeight[y] = (int) Math.ceil((double) compHeight[y] / 8.0);
}
try {
if (grabber.grabPixels() != true) {
try {
throw new AWTException("Grabber returned false: " + grabber.status());
} catch (Exception e) {
String2.log(MustBe.throwableToString(e));
}
}
} catch (InterruptedException e) {
}
;
float[][] Y = new float[compHeight[0]][compWidth[0]];
float[][] Cr1 = new float[compHeight[0]][compWidth[0]];
float[][] Cb1 = new float[compHeight[0]][compWidth[0]];
float[][] Cb2 = new float[compHeight[1]][compWidth[1]];
float[][] Cr2 = new float[compHeight[2]][compWidth[2]];
int index = 0;
for (y = 0; y < imageHeight; ++y) {
for (x = 0; x < imageWidth; ++x) {
r = ((values[index] >> 16) & 0xff);
g = ((values[index] >> 8) & 0xff);
b = (values[index] & 0xff);
// The following three lines are a more correct color conversion but
// the current conversion technique is sufficient and results in a higher
// compression rate.
// Y[y][x] = 16 + (float)(0.8588*(0.299 * (float)r + 0.587 * (float)g + 0.114
// * (float)b ));
// Cb1[y][x] = 128 + (float)(0.8784*(-0.16874 * (float)r - 0.33126 * (float)g
// + 0.5 * (float)b));
// Cr1[y][x] = 128 + (float)(0.8784*(0.5 * (float)r - 0.41869 * (float)g -
// 0.08131 * (float)b));
Y[y][x] = (float) (((0.299 * (float) r) + (0.587 * (float) g) + (0.114 * (float) b)));
Cb1[y][x] =
128 + (float) (((-0.16874 * (float) r) - (0.33126 * (float) g) + (0.5 * (float) b)));
Cr1[y][x] =
128 + (float) (((0.5 * (float) r) - (0.41869 * (float) g) - (0.08131 * (float) b)));
index++;
}
}
// Need a way to set the H and V sample factors before allowing downsampling.
// For now (04/04/98) downsampling must be hard coded.
// Until a better downsampler is implemented, this will not be done.
// Downsampling is currently supported. The downsampling method here
// is a simple box filter.
Components[0] = Y;
// Cb2 = DownSample(Cb1, 1);
Components[1] = Cb1;
// Cr2 = DownSample(Cr1, 2);
Components[2] = Cr1;
}
