modules/graphics/src/main/java/com/sun/javafx/iio/common/ImageTools.java

rev 8890 : RT-40778

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  import com.sun.javafx.geom.Point2D;
  import com.sun.javafx.geom.Rectangle;
  import com.sun.javafx.iio.ImageFrame;
  import com.sun.javafx.iio.ImageMetadata;
+ import com.sun.javafx.iio.ImageStorage;
  import com.sun.javafx.iio.ImageStorage.ImageType;
  import java.io.EOFException;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.IOException;
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          }
  
  
          return new int[]{finalWidth, finalHeight};
      }
+     
+     public static ImageFrame scaleImageFrame(ImageFrame src,
+             int destWidth, int destHeight, boolean isSmooth)
+     {
+         int numBands = ImageStorage.getNumBands(src.getImageType());
+         ByteBuffer dst = scaleImage((ByteBuffer) src.getImageData(),
+                 src.getWidth(), src.getHeight(), numBands,
+                 destWidth, destHeight, isSmooth);
+         return new ImageFrame(src.getImageType(), dst,
+                 destWidth, destHeight, destWidth * numBands, null, src.getMetadata());
+     }
+ 
+     public static ByteBuffer scaleImage(ByteBuffer src,
+             int sourceWidth, int sourceHeight, int numBands,
+             int destWidth, int destHeight, boolean isSmooth)
+     {
+         PushbroomScaler scaler = ScalerFactory.createScaler(
+                 sourceWidth, sourceHeight, numBands,
+                 destWidth, destHeight, isSmooth);
+ 
+         int stride = sourceWidth * numBands;
+         if (src.hasArray()) {
+             byte image[] = src.array();
+             for (int y = 0; y != sourceHeight; ++y) {
+                 scaler.putSourceScanline(image, y * stride);
+             }
+         } else {
+             byte scanline[] = new byte[stride];
+             for (int y = 0; y != sourceHeight; ++y) {
+                 src.get(scanline);
+                 scaler.putSourceScanline(scanline, 0);
+             }
+         }
+ 
+         return scaler.getDestination();
+     }    
  //    public static final java.awt.image.BufferedImage getAsBufferedImage(Image prismImage) {
  //        java.awt.image.BufferedImage image = null;
  //
  //        int width = prismImage.getWidth();
  //        int height = prismImage.getHeight();