private void newImage(Buffer buffer) {
Object data = buffer.getData();
if (!(data instanceof int[])) return;
RGBFormat format = (RGBFormat) buffer.getFormat();
DirectColorModel dcm =
new DirectColorModel(
format.getBitsPerPixel(),
format.getRedMask(),
format.getGreenMask(),
format.getBlueMask());
sourceImage =
new MemoryImageSource(
format.getLineStride(),
format.getSize().height,
dcm,
(int[]) data,
0,
format.getLineStride());
sourceImage.setAnimated(true);
sourceImage.setFullBufferUpdates(true);
if (component != null) {
destImage = component.createImage(sourceImage);
component.prepareImage(destImage, component);
}
}
public void putRegion(
int viewWidth,
int viewHeight,
int regWidth,
int regHeight,
int regOffX,
int regOffY,
int[] regBuffer) {
if (image == null) {
setPreferredSize(new Dimension(viewWidth, viewHeight));
imageBuffer = new int[viewWidth * viewHeight];
imageSource = new MemoryImageSource(viewWidth, viewHeight, imageBuffer, 0, viewWidth);
imageSource.setAnimated(true);
image = createImage(imageSource);
}
int destIndex = regOffX + regOffY * viewWidth;
int srcIndex = 0;
int extraRowGap = viewWidth - regWidth;
for (int j = 0; j < regHeight; j++, destIndex += extraRowGap)
for (int i = 0; i < regWidth; i++, srcIndex++, destIndex++)
imageBuffer[destIndex] = regBuffer[srcIndex];
imageSource.newPixels(regOffX, regOffY, regWidth, regHeight);
repaint(regOffX, regOffY, regWidth, regHeight);
}
void createImage() {
if (imageSource == null) {
rgbCM = new DirectColorModel(32, 0xff0000, 0xff00, 0xff);
imageSource = new MemoryImageSource(width, height, rgbCM, rgbPixels, 0, width);
imageSource.setAnimated(true);
imageSource.setFullBufferUpdates(true);
awtImage = Toolkit.getDefaultToolkit().createImage(imageSource);
newPixels = false;
} else if (newPixels) {
imageSource.newPixels(rgbPixels, rgbCM, 0, width);
newPixels = false;
} else imageSource.newPixels();
}
public myImageFade() {
myImage1 = Toolkit.getDefaultToolkit().getImage("d:/1.jpg");
myImage2 = Toolkit.getDefaultToolkit().getImage("d:/ball.gif");
myImage1_scaled = myImage1.getScaledInstance(500, 500, Image.SCALE_FAST);
myImage2_scaled = myImage2.getScaledInstance(500, 500, Image.SCALE_FAST);
repaint();
try {
MediaTracker mt = new MediaTracker(this);
mt.addImage(myImage1, 0);
mt.addImage(myImage2, 0);
mt.waitForAll();
PixelGrabber grab1 =
new PixelGrabber(myImage1, 0, 0, picWidth, picHeight, m_Img1Pix, 0, picWidth);
PixelGrabber grab2 =
new PixelGrabber(myImage2, 0, 0, picWidth, picHeight, m_Img2Pix, 0, picWidth);
grab1.grabPixels();
grab2.grabPixels();
System.out.println(m_Img1Pix.length);
System.out.println(m_Img1Pix[18500]);
m_ImgSrc = new MemoryImageSource(picWidth, picHeight, m_Pix, 0, picWidth);
m_ImgSrc.setAnimated(true);
m_Img = createImage(m_ImgSrc);
} catch (InterruptedException e) {
}
}
public void notifyMoreDataReady(float[] bins) { // an array of floats
if (recursion) System.err.println(" RECURSION ");
nBins = bins.length;
if (nBins == 0) return;
recursion = true;
if (size == null || nBins != size.height || nChunks != size.width) // || this is the or operator
createGraphics(); // Returns a Graphics2D object for rendering into the specified
// BufferedImage.
int width = size.width;
for (int i = 0;
i < nBins;
i++) { // this is recursing over all the rows (nbins is the number of rows)
int bin = nBins - i - 1; // I think this makes it start from the top
float val = mapper.eval(bins[bin]); //
if (val < 0) val = 0.0f;
if (val > 1.0) // I think this next section colours the pixels in the spectrum
val = 1.0f; // display
int c_r = (int) (255 * val);
int c_g = c_r;
int c_b = 255 - c_r;
int color =
(c_b)
+ (c_g << 8)
+ (c_r << 16)
+ (0xFF
<< 24); // << operator means signed left shift-- it shifts the bits in the binary
// code to the left creating a bigger number the operand on the right
// specifies the amount of shift
screenBuffer[i * width + ptr] =
(255 << 24)
+ color; // I think loads the screenBuffer array. the index[i*width+ptr] is filled
// with the right operand
// rgbarray[i] = color;
}
if (ptr % 1 == 0) { // ptr remainder(%) 1
screenConverter.newPixels(
ptr, 0, 1,
nBins); // newPixels is method inside the MemoryImageSource i think it does this----Sends
// a rectangular region of the buffer of pixels to any ImageConsumers that are
// currently interested in the data for this image and notify them that an
// animation frame is complete.
screenRepaint = true;
repaint();
}
ptr =
(ptr + 1)
% size.width; // i think this may help in changing the co-ordinates ptr may be the x
// coordinate
recursion = false;
}
public void shuffle(int p) {
for (int i = 0; i < picWidth * picHeight; ++i) {
m_Pix[i] = compPix(m_Img1Pix[i], m_Img2Pix[i], p);
}
m_ImgSrc.newPixels();
revalidate();
}
void createGraphics() {
synchronized (
imagSync) { // The synchronized modifier allows the user to lock objects that are shared
// If you have more than one of your threads running at the same time that
// access shared objects, it may cause your object to be in an inconsitent state
// Making a method synchronized will lock the object. This means that no other thread can call
// a synchronized method on that object.
size =
new Dimension(
nChunks,
nBins); // The dimension class 'encapsulates the width and height of a component in a
// single object
// In this case i think the object imageSync
int width = nChunks;
int height = nBins; // nBins is the height maybe the no.of rows which get coloured in
screenBuffer =
new int[width * height]; // i think this creates an integer array called screenBuffer
screenConverter =
new MemoryImageSource(
width,
height, // The MemoryImageSource class--- This class is an implementation of the
// ImageProducer interface which uses an array to produce pixel values for an
// Image.
screenBuffer,
0,
width); // The MemoryImageSource is also capable of managing a memory image which
// varies over time to allow animation or custom rendering.
screenConverter.setAnimated(
true); // Changes this memory image into a multi-frame animation or a single-frame static
// image depending on the animated parameter.This is a multframe animation
screenConverter.setFullBufferUpdates(
false); // Specifies whether this animated memory image should always be updated by
// sending the complete buffer of pixels whenever there is a change.
offscreen =
Toolkit.getDefaultToolkit()
.createImage(
screenConverter); // Returns an image which gets pixel data from the specified
// file. there other possible create image
setPreferredSize(size);
}
}
public Image getSection(int x, int y, int width, int height) {
if (width > imgWidth || height > imgHeight) {
// create new image source and pixel array
size = width * height;
pixels = new int[size];
imageSource = new MemoryImageSource(width, height, pixels, 0, width);
imageSource.setAnimated(true);
// imageSource.setFullBufferUpdates(true);
image = Toolkit.getDefaultToolkit().createImage(imageSource);
}
if (width > imgWidth || height > imgHeight || x != oldX || y != oldY) {
// recreate pixel array
int skipWidth = 0;
if (width < imgWidth && height <= imgHeight) {
skipWidth = imgWidth - width;
}
int index = 0;
for (int aY = 0; aY < height; aY++) {
for (int aX = 0; aX < width; aX++) {
if (index >= size) {
System.out.println("oops...");
}
// pixels[index] = encodeColor(stats.getValueAt(x + aX, y +
// aY));
pixels[index] = mapColor(stats.getValueAt(x + aX, y + aY));
index++;
}
index += skipWidth; // skip pixels to the right of clip area
}
oldX = x;
oldY = y;
imageSource.newPixels(0, 0, width, height);
// imageSource.newPixels();
}
if (width > imgWidth || height > imgHeight) {
imgWidth = width;
imgHeight = height;
}
return image;
}
/** Processes the data and renders it to a component */
public synchronized int process(Buffer buffer) {
if (component == null) return BUFFER_PROCESSED_FAILED;
Format inf = buffer.getFormat();
if (inf == null) return BUFFER_PROCESSED_FAILED;
if (inf != inputFormat || !buffer.getFormat().equals(inputFormat)) {
if (setInputFormat(inf) != null) return BUFFER_PROCESSED_FAILED;
}
Object data = buffer.getData();
if (!(data instanceof int[])) return BUFFER_PROCESSED_FAILED;
if (lastBuffer != buffer) {
lastBuffer = buffer;
newImage(buffer);
}
sourceImage.newPixels(0, 0, inWidth, inHeight);
Graphics g = component.getGraphics();
if (g != null) {
if (reqBounds == null) {
bounds = component.getBounds();
bounds.x = 0;
bounds.y = 0;
} else bounds = reqBounds;
g.drawImage(
destImage,
bounds.x,
bounds.y,
bounds.width,
bounds.height,
0,
0,
inWidth,
inHeight,
component);
}
return BUFFER_PROCESSED_OK;
}
