Version 4.0.1: android compatibility

[fanfix.git] / src / be / nikiroo / utils / android / ImageUtilsAndroid.java

diff --git a/src/be/nikiroo/utils/android/ImageUtilsAndroid.java b/src/be/nikiroo/utils/android/ImageUtilsAndroid.java
new file mode 100644 (file)
index 0000000..483c44f
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+++ b/src/be/nikiroo/utils/android/ImageUtilsAndroid.java
@@ -0,0 +1,70 @@
+package be.nikiroo.utils.android;
+
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import be.nikiroo.utils.Image;
+import be.nikiroo.utils.ImageUtils;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+/**
+ * This class offer some utilities based around images and uses the Android framework.
+ * 
+ * @author niki
+ */
+public class ImageUtilsAndroid extends ImageUtils {
+       @Override
+       public void saveAsImage(Image img, File target, String format)
+                       throws IOException {
+               FileOutputStream fos = new FileOutputStream(target);
+               try {
+                       Bitmap image = fromImage(img);
+
+                       boolean ok = false;
+                       try {
+                               ok = image.compress(
+                                               Bitmap.CompressFormat.valueOf(format.toUpperCase()),
+                                               90, fos);
+                       } catch (Exception e) {
+                               ok = false;
+                       }
+
+                       // Some formats are not reliable
+                       // Second change: PNG
+                       if (!ok && !format.equals("png")) {
+                               ok = image.compress(Bitmap.CompressFormat.PNG, 90, fos);
+                       }
+
+                       if (!ok) {
+                               throw new IOException(
+                                               "Cannot find a writer for this image and format: "
+                                                               + format);
+                       }
+               } catch (IOException e) {
+                       throw new IOException("Cannot write image to " + target, e);
+               } finally {
+                       fos.close();
+               }
+       }
+
+       /**
+        * Convert the given {@link Image} into a {@link Bitmap} object.
+        * 
+        * @param img
+        *            the {@link Image}
+        * @return the {@link Image} object
+        * @throws IOException
+        *             in case of IO error
+        */
+       static public Bitmap fromImage(Image img) throws IOException {
+               Bitmap image = BitmapFactory.decodeByteArray(img.getData(), 0,
+                               img.getData().length);
+               if (image == null) {
+                       throw new IOException("Failed to convert input to image");
+               }
+
+               return image;
+       }
+}