diff options
| author | Leonard Kugis <leonard@kug.is> | 2022-04-25 18:36:30 +0200 |
|---|---|---|
| committer | Leonard Kugis <leonard@kug.is> | 2022-04-25 18:36:30 +0200 |
| commit | 84e220b332bfffb0f2dcc39b9697a6fd6691d265 (patch) | |
| tree | 0b861a9a099017ffd9bf00bae12e33ed6a309bbe /src/misc/CompressedImage.java | |
Diffstat (limited to 'src/misc/CompressedImage.java')
| -rwxr-xr-x | src/misc/CompressedImage.java | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/src/misc/CompressedImage.java b/src/misc/CompressedImage.java new file mode 100755 index 0000000..b37daf9 --- /dev/null +++ b/src/misc/CompressedImage.java @@ -0,0 +1,129 @@ +package misc;
+
+import java.awt.Color;
+import java.awt.image.BufferedImage;
+import java.util.ArrayList;
+
+public class CompressedImage {
+
+ private BufferedImage image;
+ private int blockWidth, blockHeight, colors;
+ private byte[] data;
+
+ public CompressedImage(BufferedImage image, int blockWidth, int blockHeight, int colors) {
+ ArrayList<Byte[]> compData = new ArrayList<Byte[]>();
+ int imageWidth = image.getWidth(), imageHeight = image.getHeight();
+ this.image = new BufferedImage(imageWidth, imageHeight, image.getType());
+ this.blockWidth = blockWidth;
+ this.blockHeight = blockHeight;
+ compData.add(Utils.intToByteArray(imageWidth));
+ compData.add(Utils.intToByteArray(imageHeight));
+ compData.add(Utils.intToByteArray(image.getType()));
+ compData.add(Utils.intToByteArray(blockWidth));
+ compData.add(Utils.intToByteArray(blockHeight));
+ compData.add(Utils.intToByteArray(colors));
+ Color[][] block;
+ int[][][] table;
+ boolean inList;
+ ArrayList<Integer[]> list;
+ for(int xb = 0; xb<imageWidth; xb+=blockWidth) {
+ for(int yb = 0; yb<imageHeight; yb+=blockHeight) {
+ block = new Color[blockWidth][blockHeight];
+ list = new ArrayList<Integer[]>();
+ x: for(int x = 0; x<blockWidth; x++) {
+ y: for(int y = 0; y<blockHeight; y++) {
+ System.out.println("Lese pixel: (" + (xb+x) + "," + (yb+y) + ")");
+ if(xb+x>=imageWidth) break y;
+ if(yb+y>=imageHeight) continue x;
+ block[x][y] = new Color(image.getRGB(xb+x, yb+y));
+ inList = false;
+ for(int i = 0, size = list.size(); i<size; i++) {
+ if(list.get(i)[0] == block[x][y].getRed() && list.get(i)[1] == block[x][y].getGreen() && list.get(i)[2] == block[x][y].getBlue() && list.get(i)[3] == block[x][y].getAlpha()) {
+ list.set(i, new Integer[] { block[x][y].getRed(), block[x][y].getGreen(), block[x][y].getBlue(), block[x][y].getAlpha(), list.get(i)[4]+1 });
+ inList = true;
+ }
+ }
+ if(!inList)
+ list.add(new Integer[] { block[x][y].getRed(), block[x][y].getGreen(), block[x][y].getBlue(), block[x][y].getAlpha(), 1 });
+ }
+ }
+ int count = 0;
+ Stapel a = new Stapel(), b = new Stapel(), c = new Stapel();
+ for(int i = 0, size = list.size(); i<size; i++) {
+ System.out.println("Zwischenspeichern... (" + i + "/" + size + ")");
+ a.ablegen(list.get(i));
+ }
+ count = 0;
+ while(!a.istLeer()) {
+ System.out.println("Verarbeiten... (" + count + "/" + list.size() + ")");
+ Integer[] top = (Integer[])a.entnehmen();
+ while(!b.istLeer() && ((Integer[])b.inhaltGeben())[4] > top[4]) {
+ a.ablegen(b.entnehmen());
+ count--;
+ }
+ b.ablegen(top);
+ count++;
+ }
+ Color[] palette = new Color[colors];
+ Color previous = null;
+ Integer[] current = null;
+ for(int i = 0; i<palette.length; i++) {
+ if(b.istLeer()) {
+ if(previous == null) {
+ palette[i] = new Color(0,0,0);
+ } else {
+ palette[i] = previous;
+ }
+ } else {
+ current = (Integer[])b.entnehmen();
+ palette[i] = new Color(current[0], current[1], current[2], current[3]);
+ previous = new Color(current[0], current[1], current[2], current[3]);
+ }
+
+ }
+ for(int i = 0; i<palette.length; i++) {
+ compData.add(Utils.intToByteArray(palette[i].getRGB()));
+ }
+ int min, diff, smallest;
+ x: for(int x = 0; x<blockWidth; x++) {
+ y: for(int y = 0; y<blockHeight; y++) {
+ if(xb+x>=imageWidth) break y;
+ if(yb+y>=imageHeight) continue x;
+ Color col = new Color(image.getRGB(xb+x, yb+y));
+ min = 2000;
+ diff = 0;
+ smallest = 0;
+ for(int i = 0; i<palette.length; i++) {
+ if((diff = (int)Math.sqrt(Math.pow(((palette[i].getRed()+palette[i].getGreen()+palette[i].getBlue()+palette[i].getAlpha()) - (col.getRed()+col.getGreen()+col.getBlue()+col.getAlpha())), 2))) < min) {
+ min = diff;
+ smallest = i;
+ }
+ }
+ this.image.setRGB(xb+x, yb+y, palette[smallest].getRGB());
+ compData.add(new Byte[] {(byte)smallest});
+ }
+ }
+ }
+ }
+ int total = 0;
+ for(int i = 0, size = compData.size(); i<size; i++) {
+ total += compData.get(i).length;
+ }
+ this.data = new byte[total];
+ for(int i = 0, size = compData.size(); i<size; i++) {
+ Byte[] current = compData.get(i);
+ for(int j = 0; j<current.length; j++) {
+ this.data[i+j] = current[j];
+ }
+ }
+ }
+
+ public BufferedImage getImage() {
+ return image;
+ }
+
+ public byte[] getData() {
+ return data;
+ }
+
+}
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