Add a readFileToStream function to the FSTDataProvider interface while allows your to read a file to a outputstream

src/de/mas/wiiu/jnus/implementations/FSTDataProviderNUSTitle.java

@@ -91,6 +91,15 @@ public class FSTDataProviderNUSTitle implements FSTDataProvider, HasNUSTitle {
         return in;
     }
 
+    @Override
+    public void readFileToStream(OutputStream outputStream, FSTEntry entry) throws IOException {
+        try {
+            readFileToOutputStream(outputStream, entry, 0, entry.getFileSize());
+        } catch (CheckSumWrongException e) {
+            throw new IOException(e);
+        }
+    }
+
     public boolean readFileToOutputStream(OutputStream out, FSTEntry entry, long offset, long size) throws IOException, CheckSumWrongException {
         long fileOffset = entry.getFileOffset() + offset;
         long fileOffsetBlock = fileOffset;

src/de/mas/wiiu/jnus/implementations/FSTDataProviderWUDDataPartition.java

@@ -18,6 +18,7 @@ package de.mas.wiiu.jnus.implementations;
  ****************************************************************************/
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.OutputStream;
 import java.util.Optional;
 
 import de.mas.wiiu.jnus.entities.content.ContentFSTInfo;
@@ -53,6 +54,16 @@ public class FSTDataProviderWUDDataPartition implements FSTDataProvider {
         return getChunkOfData(info.getOffset(), entry.getFileOffset() + offset, size, discReader, titleKey);
     }
 
+    @Override
+    public void readFileToStream(OutputStream out, FSTEntry entry) throws IOException {
+        ContentFSTInfo info = partition.getFST().getContentFSTInfos().get((int) entry.getContentFSTID());
+        if (titleKey == null) {
+            discReader.readEncryptedToOutputStream(out, partition.getAbsolutePartitionOffset() + info.getOffset() + entry.getFileOffset(), entry.getFileSize());
+        }
+        discReader.readDecryptedToOutputStream(out, partition.getAbsolutePartitionOffset() + info.getOffset(), entry.getFileOffset(), entry.getFileSize(),
+                titleKey, null, false);
+    }
+
     @Override
     public InputStream readFileAsStream(FSTEntry entry, long offset, Optional<Long> size) throws IOException {
         ContentFSTInfo info = partition.getFST().getContentFSTInfos().get((int) entry.getContentFSTID());

src/de/mas/wiiu/jnus/implementations/wud/reader/WUDDiscReader.java

@@ -83,7 +83,7 @@ public abstract class WUDDiscReader {
         return out.toByteArray();
     }
 
-    protected abstract void readEncryptedToOutputStream(OutputStream out, long offset, long size) throws IOException;
+    public abstract void readEncryptedToOutputStream(OutputStream out, long offset, long size) throws IOException;
 
     /**
      * 

src/de/mas/wiiu/jnus/implementations/wud/reader/WUDDiscReaderCompressed.java

@@ -36,7 +36,7 @@ public class WUDDiscReaderCompressed extends WUDDiscReader {
      * Expects the .wux format by Exzap. You can more infos about it here. https://gbatemp.net/threads/wii-u-image-wud-compression-tool.397901/
      */
     @Override
-    protected void readEncryptedToOutputStream(OutputStream out, long offset, long size) throws IOException {
+    public void readEncryptedToOutputStream(OutputStream out, long offset, long size) throws IOException {
         // make sure there is no out-of-bounds read
         WUDImageCompressedInfo info = getImage().getCompressedInfo();
 

src/de/mas/wiiu/jnus/implementations/wud/reader/WUDDiscReaderSplitted.java

@@ -37,7 +37,7 @@ public class WUDDiscReaderSplitted extends WUDDiscReader {
     }
 
     @Override
-    protected void readEncryptedToOutputStream(OutputStream outputStream, long offset, long size) throws IOException {
+    public void readEncryptedToOutputStream(OutputStream outputStream, long offset, long size) throws IOException {
         RandomAccessFile input = getFileByOffset(offset);
 
         int bufferSize = 0x8000;

src/de/mas/wiiu/jnus/implementations/wud/reader/WUDDiscReaderUncompressed.java

@@ -30,7 +30,7 @@ public class WUDDiscReaderUncompressed extends WUDDiscReader {
     }
 
     @Override
-    protected void readEncryptedToOutputStream(OutputStream outputStream, long offset, long size) throws IOException {
+    public void readEncryptedToOutputStream(OutputStream outputStream, long offset, long size) throws IOException {
 
         FileInputStream input = new FileInputStream(getImage().getFileHandle());
 

src/de/mas/wiiu/jnus/interfaces/FSTDataProvider.java

@@ -18,6 +18,7 @@ package de.mas.wiiu.jnus.interfaces;
 
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.OutputStream;
 import java.util.Optional;
 
 import de.mas.wiiu.jnus.entities.fst.FSTEntry;
@@ -35,4 +36,6 @@ public interface FSTDataProvider {
 
     public InputStream readFileAsStream(FSTEntry entry, long offset, Optional<Long> size) throws IOException;
 
+    public void readFileToStream(OutputStream out, FSTEntry entry) throws IOException;
+
 }