add Kuwahara

README.md

@@ -65,7 +65,7 @@ Glide.with(this).load(R.drawable.demo).bitmapTransform(
 ### Filter (use GPUImage)
 `ToonFilterTransformation`, `SepiaFilterTransformation`, `ContrastFilterTransformation`  
 `InvertFilterTransformation`, `PixelationFilterTransformation`, `SketchFilterTransformation`  
-`SwirlFilterTransformation`
+`SwirlFilterTransformation`, `KuwaharaFilterTransformation`
 
 ### Other
 `RoundedCornersTransformation`

example/src/main/java/jp/wasabeef/example/glide/MainActivity.java

@@ -37,6 +37,7 @@ public class MainActivity extends ActionBarActivity {
         dataSet.add(Type.Sketch);
         dataSet.add(Type.Swirl);
         dataSet.add(Type.Brightness);
+        dataSet.add(Type.Kuawahara);
 
         recyclerView.setAdapter(new MainAdapter(this, dataSet));
     }

example/src/main/java/jp/wasabeef/example/glide/MainAdapter.java

@@ -27,6 +27,7 @@ import jp.wasabeef.glide.transformations.RoundedCornersTransformation;
 import jp.wasabeef.glide.transformations.gpu.BrightnessFilterTransformation;
 import jp.wasabeef.glide.transformations.gpu.ContrastFilterTransformation;
 import jp.wasabeef.glide.transformations.gpu.InvertFilterTransformation;
+import jp.wasabeef.glide.transformations.gpu.KuwaharaFilterTransformation;
 import jp.wasabeef.glide.transformations.gpu.PixelationFilterTransformation;
 import jp.wasabeef.glide.transformations.gpu.SepiaFilterTransformation;
 import jp.wasabeef.glide.transformations.gpu.SketchFilterTransformation;
@@ -57,7 +58,8 @@ public class MainAdapter extends RecyclerView.Adapter<MainAdapter.ViewHolder> {
         Pixel,
         Sketch,
         Swirl,
-        Brightness
+        Brightness,
+        Kuawahara
     }
 
     public MainAdapter(Context context, List<Type> dataSet) {
@@ -123,6 +125,9 @@ public class MainAdapter extends RecyclerView.Adapter<MainAdapter.ViewHolder> {
             case Brightness:
                 transformation = new BrightnessFilterTransformation(mContext, mPool, 0.5f);
                 break;
+            case Kuawahara:
+                transformation = new KuwaharaFilterTransformation(mContext, mPool, 25);
+                break;
         }
 
         Glide.with(mContext).load(R.drawable.demo)

transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/KuwaharaFilterTransformation.java

@@ -0,0 +1,72 @@
+package jp.wasabeef.glide.transformations.gpu;
+
+/**
+ * Copyright (C) 2015 Wasabeef
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import com.bumptech.glide.load.Transformation;
+import com.bumptech.glide.load.engine.Resource;
+import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import com.bumptech.glide.load.resource.bitmap.BitmapResource;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+
+import jp.co.cyberagent.android.gpuimage.GPUImage;
+import jp.co.cyberagent.android.gpuimage.GPUImageKuwaharaFilter;
+
+/**
+ * The radius to sample from when creating the brush-stroke effect, with a default of 3.
+ * The larger the radius, the slower the filter.
+ */
+public class KuwaharaFilterTransformation implements Transformation<Bitmap> {
+
+    private Context mContext;
+    private BitmapPool mBitmapPool;
+
+    private GPUImageKuwaharaFilter mFilter = new GPUImageKuwaharaFilter();
+    private int mRadius;
+
+    public KuwaharaFilterTransformation(Context context, BitmapPool pool) {
+        mContext = context;
+        mBitmapPool = pool;
+    }
+
+    public KuwaharaFilterTransformation(Context context, BitmapPool pool, int radius) {
+        mContext = context;
+        mBitmapPool = pool;
+        mRadius = radius;
+        mFilter.setRadius(mRadius);
+    }
+
+    @Override
+    public Resource<Bitmap> transform(Resource<Bitmap> resource, int outWidth, int outHeight) {
+        Bitmap source = resource.get();
+
+        GPUImage gpuImage = new GPUImage(mContext);
+        gpuImage.setImage(source);
+        gpuImage.setFilter(mFilter);
+        Bitmap bitmap = gpuImage.getBitmapWithFilterApplied();
+
+        source.recycle();
+
+        return BitmapResource.obtain(bitmap, mBitmapPool);
+    }
+
+    @Override
+    public String getId() {
+        return "KuwaharaFilterTransformation(radius=" + mRadius + ")";
+    }
+}