fix some OOM, do not upscale images

apache#238

Author: DavidWiesner

src/android/CameraLauncher.java

@@ -1064,7 +1064,6 @@ private Bitmap getScaledAndRotatedBitmap(String imageUrl, boolean unknownSources
             // determine the correct aspect ratio
             int[] widthHeight = calculateAspectRatio(rotatedWidth, rotatedHeight);
 
-
             // Load in the smallest bitmap possible that is closest to the size we want
             options.inJustDecodeBounds = false;
             options.inSampleSize = calculateSampleSize(rotatedWidth, rotatedHeight,  widthHeight[0], widthHeight[1]);
@@ -1122,8 +1121,10 @@ private Bitmap getScaledAndRotatedBitmap(String imageUrl, boolean unknownSources
      * @return
      */
     public int[] calculateAspectRatio(int origWidth, int origHeight) {
-        int newWidth = this.targetWidth;
-        int newHeight = this.targetHeight;
+        // fix some OOM
+        // do not upscale image
+        int newWidth = Math.min(this.targetWidth, origWidth);
+        int newHeight = Math.min(this.targetHeight, origHeight);
 
         // If no new width or height were specified return the original bitmap
         if (newWidth <= 0 && newHeight <= 0) {

src/ios/UIImage+CropScaleOrientation.m

@@ -28,8 +28,8 @@ - (UIImage*)imageByScalingAndCroppingForSize:(CGSize)targetSize
     CGSize imageSize = sourceImage.size;
     CGFloat width = imageSize.width;
     CGFloat height = imageSize.height;
-    CGFloat targetWidth = targetSize.width;
-    CGFloat targetHeight = targetSize.height;
+    CGFloat targetWidth = MIN(targetSize.width, width);
+    CGFloat targetHeight = MIN(targetSize.height, height);
     CGFloat scaleFactor = 0.0;
     CGFloat scaledWidth = targetWidth;
     CGFloat scaledHeight = targetHeight;
@@ -136,8 +136,8 @@ - (UIImage*)imageByScalingNotCroppingForSize:(CGSize)targetSize
     CGSize imageSize = sourceImage.size;
     CGFloat width = imageSize.width;
     CGFloat height = imageSize.height;
-    CGFloat targetWidth = targetSize.width;
-    CGFloat targetHeight = targetSize.height;
+    CGFloat targetWidth = MIN(targetSize.width, width);
+    CGFloat targetHeight = MIN(targetSize.height, height);
     CGFloat scaleFactor = 0.0;
     CGSize scaledSize = targetSize;