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fix length of IDAT chunk

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jbb01 2024-08-06 17:39:09 +02:00
parent 1fe5731dcf
commit 4ea9ebe25a
5 changed files with 3 additions and 1 deletions
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src/main/java/eu/jonahbauer/raytracing/render/ImageFormat.java
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@ -1,6 +1,7 @@
package eu.jonahbauer.raytracing.render;
import eu.jonahbauer.raytracing.render.canvas.Canvas;
import eu.jonahbauer.raytracing.render.canvas.Image;
import org.jetbrains.annotations.NotNull;
import java.io.*;
@ -10,6 +11,7 @@ import java.nio.file.Path;
import java.util.zip.CRC32;
import java.util.zip.CheckedOutputStream;
import java.util.zip.DeflaterOutputStream;
import java.util.zip.InflaterInputStream;
public enum ImageFormat {
PPM {
@ -93,7 +95,7 @@ public enum ImageFormat {
}
var bytes = baos.toByteArray();
data.writeInt(bytes.length);
data.writeInt(bytes.length - 4); // don't include type in length
data.write(bytes);
data.writeInt((int) crc.getChecksum().getValue());
}