eaglercraft/eagler-binary-tools
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make EBP encoder use less memory

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lax1dude 2024-06-17 19:03:58 -07:00
parent 475df84405
commit 5dd00ca113
1 changed files with 6 additions and 5 deletions
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11
src/main/java/net/lax1dude/eaglercraft/bintools/EBPFileEncoder.java
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@ -5,8 +5,10 @@ import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import javax.imageio.ImageIO;
@ -28,8 +30,6 @@ import javax.imageio.ImageIO;
*/
public class EBPFileEncoder {
private static final int[] paletteHelper = new int[0xFFFFFF + 1];
private static void setBit(int idx, boolean v, byte[] bytes) {
int idx2 = idx >> 3;
if(v) {
@ -107,14 +107,15 @@ public class EBPFileEncoder {
fos.write(pixels[i] & 0xFF);
}
}else {
Map<Integer,Integer> paletteHelper = new HashMap();
fos.write(1); // type is palette
fos.write(colorPalette.size()); // write palette size
Iterator<Integer> paletteItr = colorPalette.iterator();
int paletteIdx = 0;
paletteHelper[0] = 0;
paletteHelper.put(0, 0);
while(paletteItr.hasNext()) {
int j = paletteItr.next().intValue();
paletteHelper[j] = ++paletteIdx;
paletteHelper.put(j, ++paletteIdx);
fos.write((j >> 16) & 0xFF);
fos.write((j >> 8) & 0xFF);
fos.write(j & 0xFF);
@ -128,7 +129,7 @@ public class EBPFileEncoder {
byte[] completedBitSet = new byte[(totalBits & 7) == 0 ? (totalBits >> 3) : ((totalBits >> 3) + 1)];
int bsi = 0;
for(int i = 0; i < pixels.length; ++i) {
int wr = paletteHelper[pixels[i]];
int wr = paletteHelper.get(pixels[i]);
for(int j = bpp - 1; j >= 0; --j) {
setBit(bsi++, ((wr >> j) & 1) != 0, completedBitSet);
}