jonah/raytracing
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fix length of IDAT chunk

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jbb01 2024-08-06 17:39:09 +02:00
parent 705e2d715d
commit c6c43ad895
2 changed files with 3 additions and 1 deletions
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docs/diagramm.png
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Width:  |  Height:  |  Size: 2.3 MiB

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Width:  |  Height:  |  Size: 2.3 MiB

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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; package eu.jonahbauer.raytracing.render;
import eu.jonahbauer.raytracing.render.canvas.Canvas; import eu.jonahbauer.raytracing.render.canvas.Canvas;
import eu.jonahbauer.raytracing.render.canvas.Image;
import org.jetbrains.annotations.NotNull; import org.jetbrains.annotations.NotNull;
import java.io.*; import java.io.*;
@ -10,6 +11,7 @@ import java.nio.file.Path;
import java.util.zip.CRC32; import java.util.zip.CRC32;
import java.util.zip.CheckedOutputStream; import java.util.zip.CheckedOutputStream;
import java.util.zip.DeflaterOutputStream; import java.util.zip.DeflaterOutputStream;
import java.util.zip.InflaterInputStream;
public enum ImageFormat { public enum ImageFormat {
PPM { PPM {
@ -93,7 +95,7 @@ public enum ImageFormat {
} }
var bytes = baos.toByteArray(); var bytes = baos.toByteArray();
data.writeInt(bytes.length); data.writeInt(bytes.length - 4); // don't include type in length
data.write(bytes); data.write(bytes);
data.writeInt((int) crc.getChecksum().getValue()); data.writeInt((int) crc.getChecksum().getValue());
} }