Hopefully fixed OOM when bluring an image.

app/src/main/java/com/kabouzeid/gramophone/helper/bitmapblur/StackBlurManager.java

@@ -27,15 +27,19 @@ package com.kabouzeid.gramophone.helper.bitmapblur;
 
 import android.graphics.Bitmap;
 
+import com.kabouzeid.gramophone.util.Util;
+
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
+// class modified by Karim Abou Zeid (kabouzeid)
+
 public class StackBlurManager {
     static final int EXECUTOR_THREADS = Runtime.getRuntime().availableProcessors();
     static final ExecutorService EXECUTOR = Executors.newFixedThreadPool(EXECUTOR_THREADS);
 
     /**
-     * Original image
+     * Resized original image
      */
     private final Bitmap _image;
 
@@ -52,10 +56,10 @@ public class StackBlurManager {
     /**
      * Constructor method (basic initialization and construction of the pixel array)
      *
-     * @param image The image that will be analyed
+     * @param image The image that will be analysed
      */
     public StackBlurManager(Bitmap image) {
-        _image = image;
+        _image = Util.getResizedBitmap(image, 500, 500, false);
         _blurProcess = new JavaBlurProcess();
     }
 
@@ -77,13 +81,4 @@ public class StackBlurManager {
     public Bitmap returnBlurredImage() {
         return _result;
     }
-
-    /**
-     * Returns the original image as a bitmap
-     *
-     * @return the original bitmap image
-     */
-    public Bitmap getImage() {
-        return this._image;
-    }
 }

app/src/main/java/com/kabouzeid/gramophone/ui/activities/AlbumDetailActivity.java

@@ -213,11 +213,12 @@ public class AlbumDetailActivity extends AbsFabActivity implements PaletteColorH
                         .resetViewBeforeLoading(true)
                         .build(),
                 new SimpleImageLoadingListener() {
-
                     @Override
                     public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
                         applyPalette(null);
-                        albumArtBackground.setImageBitmap(new StackBlurManager(BitmapFactory.decodeResource(getResources(), R.drawable.default_album_art)).process(10));
+                        BitmapFactory.Options options = new BitmapFactory.Options();
+                        options.inSampleSize = 2;
+                        albumArtBackground.setImageBitmap(new StackBlurManager(BitmapFactory.decodeResource(getResources(), R.drawable.default_album_art, options)).process(10));
                         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
                             startPostponedEnterTransition();
                     }

app/src/main/java/com/kabouzeid/gramophone/ui/activities/ArtistDetailActivity.java

@@ -68,7 +68,7 @@ import butterknife.InjectView;
 
 /**
  * A lot of hackery is done in this activity. Changing things may will brake the whole activity.
- * <p>
+ * <p/>
  * Should be kinda stable ONLY AS IT IS!!!
  */
 public class ArtistDetailActivity extends AbsFabActivity implements PaletteColorHolder, CabHolder {
@@ -282,8 +282,9 @@ public class ArtistDetailActivity extends AbsFabActivity implements PaletteColor
     }
 
     private void setUpArtistImageAndApplyPalette(final boolean forceDownload) {
-        final StackBlurManager defaultArtistImageBlurManager = new StackBlurManager(BitmapFactory.decodeResource(getResources(), R.drawable.default_artist_image));
+        BitmapFactory.Options options = new BitmapFactory.Options();
-        artistImageBackground.setImageBitmap(defaultArtistImageBlurManager.process(10));
+        options.inSampleSize = 2;
+        final StackBlurManager defaultArtistImageBlurManager = new StackBlurManager(BitmapFactory.decodeResource(getResources(), R.drawable.default_artist_image, options));
         LastFMArtistImageUrlLoader.loadArtistImageUrl(this, artist.name, forceDownload, new LastFMArtistImageUrlLoader.ArtistImageUrlLoaderCallback() {
             @Override
             public void onArtistImageUrlLoaded(final String url) {
@@ -299,7 +300,7 @@ public class ArtistDetailActivity extends AbsFabActivity implements PaletteColor
                             @Override
                             public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
                                 applyPalette(null);
-                                artistImageBackground.setImageBitmap(defaultArtistImageBlurManager.returnBlurredImage());
+                                artistImageBackground.setImageBitmap(defaultArtistImageBlurManager.process(10));
                             }
 
                             @Override

app/src/main/java/com/kabouzeid/gramophone/ui/activities/MusicControllerActivity.java

@@ -435,7 +435,9 @@ public class MusicControllerActivity extends AbsFabActivity {
                         applyPalette(null);
                         // to gain some performance cache the blurred bitmap
                         if (defaultAlbumArtStackBlurManager == null) {
-                            defaultAlbumArtStackBlurManager = new StackBlurManager(BitmapFactory.decodeResource(getResources(), R.drawable.default_album_art));
+                            BitmapFactory.Options options = new BitmapFactory.Options();
+                            options.inSampleSize = 2;
+                            defaultAlbumArtStackBlurManager = new StackBlurManager(BitmapFactory.decodeResource(getResources(), R.drawable.default_album_art, options));
                             defaultAlbumArtStackBlurManager.process(10);
                         }
                         albumArtBackground.setImageBitmap(defaultAlbumArtStackBlurManager.returnBlurredImage());

app/src/main/java/com/kabouzeid/gramophone/util/Util.java

@@ -6,7 +6,9 @@ import android.content.Context;
 import android.content.res.ColorStateList;
 import android.content.res.Configuration;
 import android.content.res.TypedArray;
+import android.graphics.Bitmap;
 import android.graphics.Color;
+import android.graphics.Matrix;
 import android.graphics.PorterDuff;
 import android.graphics.drawable.Drawable;
 import android.os.Build;
@@ -247,4 +249,18 @@ public class Util {
             return config.getLayoutDirection() == View.LAYOUT_DIRECTION_RTL;
         } else return false;
     }
+
+    public static Bitmap getResizedBitmap(Bitmap bm, int newHeight, int newWidth, boolean recycleOld) {
+        int width = bm.getWidth();
+        int height = bm.getHeight();
+        float scaleWidth = ((float) newWidth) / width;
+        float scaleHeight = ((float) newHeight) / height;
+        Matrix matrix = new Matrix();
+        matrix.postScale(scaleWidth, scaleHeight);
+        Bitmap resizedBitmap = Bitmap.createBitmap(bm, 0, 0, width, height, matrix, false);
+        if (recycleOld && resizedBitmap != bm) {
+            bm.recycle();
+        }
+        return resizedBitmap;
+    }
 }