diff -r b329573c76d7 -r 8e9983260624 java/copy-image-resizer/src/cz/frantovo/copyImageResizer/SingleImageResizer.java
--- a/java/copy-image-resizer/src/cz/frantovo/copyImageResizer/SingleImageResizer.java	Mon Nov 17 01:17:02 2014 +0100
+++ b/java/copy-image-resizer/src/cz/frantovo/copyImageResizer/SingleImageResizer.java	Mon Nov 17 17:02:48 2014 +0100
@@ -20,8 +20,9 @@
 import java.awt.Graphics2D;
 import java.awt.image.BufferedImage;
 import java.io.IOException;
-import java.io.InputStream;
 import java.io.OutputStream;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 import java.util.regex.Pattern;
 import javax.imageio.ImageIO;
 
@@ -31,10 +32,11 @@
  */
 public class SingleImageResizer {
 
-	public void resize(InputStream input, OutputStream output, ImageFormat outputFormat) throws ResizeException {
+	private static final Logger log = Logger.getLogger(SingleImageResizer.class.getName());
+
+	public void resize(BufferedImage input, OutputStream output, SizeSpecification size, ImageFormat outputFormat) throws ResizeException {
 		try {
-			BufferedImage image = ImageIO.read(input);
-			BufferedImage resized = resize(image, 64, 64, image.getType());
+			BufferedImage resized = resize(input, size.getWidth(), size.getHeight(), input.getType());
 
 			ImageIO.write(resized, outputFormat.getFormat(), output);
 		} catch (IOException e) {
@@ -56,6 +58,11 @@
 			height = maxHeight;
 		}
 
+		if (type == BufferedImage.TYPE_CUSTOM) {
+			log.log(Level.FINE, "Setting default image type: from TYPE_CUSTOM to TYPE_INT_ARGB");
+			type = BufferedImage.TYPE_INT_ARGB;
+		}
+
 		BufferedImage resized = new BufferedImage(width, height, type);
 		Graphics2D g = resized.createGraphics();
 		g.drawImage(original, 0, 0, width, height, null);
@@ -78,6 +85,9 @@
 			this.regex = regex;
 		}
 
+		/**
+		 * @return format name for {@linkplain ImageIO#write(java.awt.image.RenderedImage, java.lang.String, java.io.File)
+		 */
 		public String getFormat() {
 			return format;
 		}