Merge pull request #443 from Keheira/master

Get size of rescaled image

Author: wasabeef

library/src/main/java/jp/co/cyberagent/android/gpuimage/GPUImage.java

@@ -67,6 +67,7 @@ public enum ScaleType {CENTER_INSIDE, CENTER_CROP}
     private GPUImageFilter filter;
     private Bitmap currentBitmap;
     private ScaleType scaleType = ScaleType.CENTER_CROP;
+    private int scaleWidth, scaleHeight;
 
     /**
      * Instantiates a new GPUImage object.
@@ -251,6 +252,18 @@ public void setScaleType(ScaleType scaleType) {
         requestRender();
     }
 
+    /**
+     * This gets the size of the image. This makes it easier to adjust
+     * the size of your imagePreview to the the size of the scaled image.
+     *
+     * @param width The bitmap width
+     * @param height The bitmap height
+     * @return array with width and height of bitmap image
+     */
+    public int[] getScaleSize() {
+        return new int[] {scaleWidth, scaleHeight};
+    }
+
     /**
      * Sets the rotation of the displayed image.
      *
@@ -729,6 +742,8 @@ private int[] getScaleSize(int width, int height) {
                 newWidth = outputWidth;
                 newHeight = (newWidth / width) * height;
             }
+            scaleWidth = Math.round(newWidth);
+            scaleHeight = Math.round(newHeight);
             return new int[]{Math.round(newWidth), Math.round(newHeight)};
         }