For Glide 4.5.0 (#112)

* Implement equals() and hashCode() methods

* Oops: Replace by static final to prevent String class name generation for every call on hashCodes() & updateDiskCacheKey() methods

CHANGELOG.md

@@ -1,6 +1,60 @@
 Change Log
 ==========
 
+Version 3.1.0 *(2018-01-26)*
+----------------------------
+
+Update:  
+- Compile & Target SDK Version 25 -> 27  
+- Build Tools 26.0.1 -> 27.0.3  
+- Support Library 25.3.1 -> 27.0.2  
+- Glide 4.0.0 -> 4.5.0  
+
+Bug Fix:  
+- [Implement equals() and hashCode() methods #105](https://github.com/wasabeef/glide-transformations/pull/105)  
+- Use RenderScript#releaseAllContexts  
+
+Version 3.0.1 *(2017-09-08)*
+----------------------------
+
+Bug Fix:
+- [Deleted a setting for DexGuard #86](https://github.com/wasabeef/glide-transformations/issues/86)
+
+Version 3.0.0 *(2017-09-06)*
+----------------------------
+
+Update:
+- Build Tools 25.0.2 -> 26.0.1
+- Min SDK Version 11 -> 14
+- Glide 3.7.0 -> 4.0.0
+
+Feature: 
+- Supported Glide 4.0.0
+
+Version 2.0.2 *(2017-03-17)*
+----------------------------
+
+Update:
+- Compile & Target SDK Version 23 -> 25
+- Build Tools 23.0.2 -> 25.0.2
+- Support Library 23.2.1 -> 25.3.0
+- GPUImage for Android 1.3.0 -> 1.4.1
+
+Bug Fix:
+- [Additional resource cleanup in RSBlur #45](https://github.com/wasabeef/glide-transformations/pull/45)
+ 
+Version 2.0.1 *(2016-04-21)*
+----------------------------
+
+Fix:
+ [#35](https://github.com/wasabeef/glide-transformations/issues/35)
+ RSInvalidStateException
+
+Version 2.0.0 *(2016-03-02)*
+----------------------------
+
+Say v8.RenderScript goodbye
+
 Version 1.4.0 *(2016-02-28)*
 ----------------------------
 

README.md

@@ -29,13 +29,12 @@ Please feel free to use this.
 ```groovy
 repositories {
     jcenter()
-    mavenCentral()  // GPUImage for Android
 }
 
 dependencies {
-    compile 'jp.wasabeef:glide-transformations:1.4.0'
+    implementation 'jp.wasabeef:glide-transformations:3.1.0'
     // If you want to use the GPU Filters
-    compile 'jp.co.cyberagent.android.gpuimage:gpuimage-library:1.3.0'
+    implementation 'jp.co.cyberagent.android.gpuimage:gpuimage-library:1.4.1'
 }
 ```
 
@@ -45,8 +44,8 @@ Set Glide Transform.
 
 ```java
 Glide.with(this).load(R.drawable.demo)
-        .bitmapTransform(new BlurTransformation(context))
-        .into((ImageView) findViewById(R.id.image));
+  .apply(bitmapTransform(new BlurTransformation(25)))
+  .into((ImageView) findViewById(R.id.image));
 ```
 
 ## Advanced Step 3
@@ -54,26 +53,14 @@ Glide.with(this).load(R.drawable.demo)
 You can set a multiple transformations.
 
 ```java
+MultiTransformation multi = new MultiTransformation(
+    new BlurTransformation(25), 
+    new RoundedCornersTransformation(128, 0, RoundedCornersTransformation.CornerType.BOTTOM))))
 Glide.with(this).load(R.drawable.demo)
-  .bitmapTransform(new BlurTransformation(context, 25, 2), new CropCircleTransformation(context))
+  .apply(bitmapTransform(multi))
   .into((ImageView) findViewById(R.id.image));
 ```
 
-## Step 4
-
-If you are using `BlurTransformation`.
-
-```groovy
-android {
-    ...
-    defaultConfig {
-        // Warning:Renderscript support mode is not currently supported with renderscript target 21+
-        renderscriptTargetApi 20
-        renderscriptSupportModeEnabled true
-    }
-}
-```
-
 ## Transformations
 
 ### Crop
@@ -106,6 +93,7 @@ Please [ping](mailto:dadadada.chop@gmail.com) me or send a pull request if you w
 Icon | Application
 ------------ | -------------
 <img src="https://lh6.ggpht.com/6zKH_uQY1bxCwXL4DLo_uoFEOXdShi3BgmN6XRHlaJ-oA1svmq6y1PZkmO50nWQn2Lg=w300-rw" width="48" height="48" /> | [Ameba Ownd](https://play.google.com/store/apps/details?id=jp.co.cyberagent.madrid)
+<img src="https://lh3.googleusercontent.com/ZOrekp-ho-ecWG1TyvuOs0LoB5M4QYWCCLS5lFbAHhp_SklSd06544ENG3uC97zGWes=w300-rw" width="48" height="48" /> | [AbemaTV](https://play.google.com/store/apps/details?id=tv.abema)
 
 Developed By
 -------
@@ -134,7 +122,7 @@ Thanks
 License
 -------
 
-    Copyright 2015 Wasabeef
+    Copyright 2018 Wasabeef
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.

build.gradle

@@ -3,18 +3,17 @@
 buildscript {
     repositories {
         jcenter()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.0.0-beta6'
-        classpath 'com.novoda:bintray-release:0.3.4'
-
-        // NOTE: Do not place your application dependencies here; they belong
-        // in the individual module build.gradle files
+        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.novoda:bintray-release:0.8.0'
     }
 }
 
 allprojects {
     repositories {
+        google()
         jcenter()
         mavenCentral()
     }

example/build.gradle

@@ -1,62 +1,62 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion COMPILE_SDK_VERSION as int
-    buildToolsVersion BUILD_TOOLS_VERSION
+  compileSdkVersion COMPILE_SDK_VERSION as int
+  buildToolsVersion BUILD_TOOLS_VERSION
 
-    defaultConfig {
-        minSdkVersion MIN_SDK_VERSION as int
-        targetSdkVersion TARGET_SDK_VERSION as int
-        versionCode "git rev-list origin/master --count".execute().text.toInteger()
-        versionName VERSION_NAME
+  defaultConfig {
+    minSdkVersion MIN_SDK_VERSION as int
+    targetSdkVersion TARGET_SDK_VERSION as int
+    versionCode "git rev-list origin/master --count".execute().text.toInteger()
+    versionName VERSION_NAME
+  }
 
-        // Warning:Renderscript support mode is not currently supported with renderscript target 21+
-        renderscriptTargetApi RENDERSCRIPT_TARGET_API as int
-        renderscriptSupportModeEnabled true
+  signingConfigs {
+    release {
+      storeFile file(keyStoreProperty)
+      keyAlias keyAliasProperty
+      storePassword keyStorePasswordProperty
+      keyPassword keyAliasPasswordProperty
     }
+  }
 
-    signingConfigs {
-        release {
-            storeFile file(keyStoreProperty)
-            keyAlias keyAliasProperty
-            storePassword keyStorePasswordProperty
-            keyPassword keyAliasPasswordProperty
-        }
+  buildTypes {
+    debug {
+      debuggable true
+      zipAlignEnabled true
     }
-
-    buildTypes {
-        debug {
-            debuggable true
-            zipAlignEnabled true
-        }
-        release {
-            debuggable false
-            zipAlignEnabled true
-            signingConfig signingConfigs.release
-        }
+    release {
+      debuggable false
+      zipAlignEnabled true
+      signingConfig signingConfigs.release
+      minifyEnabled true
+      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
     }
+  }
 }
 
 def getKeyStoreProperty() {
-    return hasProperty('WASABEEF_KEYSTORE') ? WASABEEF_KEYSTORE : "debug.keystore"
+  return hasProperty('WASABEEF_KEYSTORE') ? WASABEEF_KEYSTORE : "debug.keystore"
 }
 
 def getKeyAliasProperty() {
-    return hasProperty('WASABEEF_KEYALIAS') ? WASABEEF_KEYALIAS : "android"
+  return hasProperty('WASABEEF_KEYALIAS') ? WASABEEF_KEYALIAS : "android"
 }
 
 def getKeyStorePasswordProperty() {
-    return hasProperty('WASABEEF_KEYSTOREPASSWORD') ? WASABEEF_KEYSTOREPASSWORD : "androiddebugkey"
+  return hasProperty('WASABEEF_KEYSTOREPASSWORD') ? WASABEEF_KEYSTOREPASSWORD : "androiddebugkey"
 }
 
 def getKeyAliasPasswordProperty() {
-    return hasProperty('WASABEEF_KEYALIASPASSWORD') ? WASABEEF_KEYALIASPASSWORD : "android"
+  return hasProperty('WASABEEF_KEYALIASPASSWORD') ? WASABEEF_KEYALIASPASSWORD : "android"
 }
 
 dependencies {
-    compile project(':transformations')
-    compile "com.github.bumptech.glide:glide:${GLIDE_VERSION}"
-    compile "jp.co.cyberagent.android.gpuimage:gpuimage-library:${GPUIMAGE_VERSION}"
-    compile "com.android.support:appcompat-v7:${SUPPORT_PACKAGE_VERSION}"
-    compile "com.android.support:recyclerview-v7:${SUPPORT_PACKAGE_VERSION}"
+  implementation project(':transformations')
+  implementation "com.github.bumptech.glide:glide:${GLIDE_VERSION}"
+  annotationProcessor "com.github.bumptech.glide:compiler:${GLIDE_VERSION}"
+  implementation "jp.co.cyberagent.android.gpuimage:gpuimage-library:${GPUIMAGE_VERSION}"
+  implementation "com.android.support:appcompat-v7:${SUPPORT_PACKAGE_VERSION}"
+  implementation "com.android.support:recyclerview-v7:${SUPPORT_PACKAGE_VERSION}"
+  implementation 'com.android.support.constraint:constraint-layout:1.1.0-beta4'
 }

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

@@ -2,7 +2,7 @@ package jp.wasabeef.example.glide;
 
 import android.os.Bundle;
 import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.GridLayoutManager;
+import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import java.util.ArrayList;
 import java.util.List;
@@ -15,7 +15,7 @@ public class MainActivity extends AppCompatActivity {
     setContentView(R.layout.activity_main);
 
     RecyclerView recyclerView = (RecyclerView) findViewById(R.id.list);
-    recyclerView.setLayoutManager(new GridLayoutManager(this, 2));
+    recyclerView.setLayoutManager(new LinearLayoutManager(this));
 
     List<Type> dataSet = new ArrayList<>();
     dataSet.add(Type.Mask);

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

@@ -10,6 +10,7 @@ import android.view.ViewGroup;
 import android.widget.ImageView;
 import android.widget.TextView;
 import com.bumptech.glide.Glide;
+import com.bumptech.glide.load.MultiTransformation;
 import com.bumptech.glide.load.resource.bitmap.CenterCrop;
 import java.util.List;
 import jp.wasabeef.glide.transformations.BlurTransformation;
@@ -17,6 +18,7 @@ import jp.wasabeef.glide.transformations.ColorFilterTransformation;
 import jp.wasabeef.glide.transformations.CropCircleTransformation;
 import jp.wasabeef.glide.transformations.CropSquareTransformation;
 import jp.wasabeef.glide.transformations.CropTransformation;
+import jp.wasabeef.glide.transformations.CropTransformation.CropType;
 import jp.wasabeef.glide.transformations.GrayscaleTransformation;
 import jp.wasabeef.glide.transformations.MaskTransformation;
 import jp.wasabeef.glide.transformations.RoundedCornersTransformation;
@@ -31,13 +33,16 @@ import jp.wasabeef.glide.transformations.gpu.SwirlFilterTransformation;
 import jp.wasabeef.glide.transformations.gpu.ToonFilterTransformation;
 import jp.wasabeef.glide.transformations.gpu.VignetteFilterTransformation;
 
+import static com.bumptech.glide.request.RequestOptions.bitmapTransform;
+import static com.bumptech.glide.request.RequestOptions.overrideOf;
+
 /**
  * Created by Wasabeef on 2015/01/11.
  */
 public class MainAdapter extends RecyclerView.Adapter<MainAdapter.ViewHolder> {
 
-  private Context mContext;
-  private List<Type> mDataSet;
+  private Context context;
+  private List<Type> dataSet;
 
   enum Type {
     Mask,
@@ -64,165 +69,168 @@ public class MainAdapter extends RecyclerView.Adapter<MainAdapter.ViewHolder> {
   }
 
   public MainAdapter(Context context, List<Type> dataSet) {
-    mContext = context;
-    mDataSet = dataSet;
+    this.context = context;
+    this.dataSet = dataSet;
   }
 
   @Override public MainAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
-    View v = LayoutInflater.from(mContext).inflate(R.layout.layout_list_item, parent, false);
+    View v = LayoutInflater.from(context).inflate(R.layout.layout_list_item, parent, false);
     return new ViewHolder(v);
   }
 
   @Override public void onBindViewHolder(MainAdapter.ViewHolder holder, int position) {
-    switch (mDataSet.get(position)) {
+    switch (dataSet.get(position)) {
       case Mask: {
-        int width = Utils.dip2px(mContext, 133.33f);
-        int height = Utils.dip2px(mContext, 126.33f);
-        Glide.with(mContext)
+        int width = Utils.dip2px(context, 266.66f);
+        int height = Utils.dip2px(context, 252.66f);
+        Glide.with(context)
             .load(R.drawable.check)
-            .override(width, height)
-            .bitmapTransform(new CenterCrop(mContext),
-                new MaskTransformation(mContext, R.drawable.mask_starfish))
+            .apply(overrideOf(width, height))
+            .apply(bitmapTransform(new MultiTransformation<>(new CenterCrop(),
+                new MaskTransformation(R.drawable.mask_starfish))))
             .into(holder.image);
         break;
       }
       case NinePatchMask: {
-        int width = Utils.dip2px(mContext, 150.0f);
-        int height = Utils.dip2px(mContext, 100.0f);
-        Glide.with(mContext)
+        int width = Utils.dip2px(context, 300.0f);
+        int height = Utils.dip2px(context, 200.0f);
+        Glide.with(context)
             .load(R.drawable.check)
-            .override(width, height)
-            .bitmapTransform(new CenterCrop(mContext),
-                new MaskTransformation(mContext, R.drawable.mask_chat_right))
+            .apply(overrideOf(width, height))
+            .apply(bitmapTransform(new MultiTransformation<>(new CenterCrop(),
+                new MaskTransformation(R.drawable.mask_chat_right))))
             .into(holder.image);
         break;
       }
       case CropTop:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.demo)
-            .bitmapTransform(
-                new CropTransformation(mContext, 300, 100, CropTransformation.CropType.TOP))
+            .apply(bitmapTransform(
+                new CropTransformation(Utils.dip2px(context, 300), Utils.dip2px(context, 100),
+                    CropType.TOP)))
             .into(holder.image);
         break;
       case CropCenter:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.demo)
-            .bitmapTransform(new CropTransformation(mContext, 300, 100))
+            .apply(bitmapTransform(
+                new CropTransformation(Utils.dip2px(context, 300), Utils.dip2px(context, 100), CropType.CENTER)))
             .into(holder.image);
         break;
       case CropBottom:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.demo)
-            .bitmapTransform(
-                new CropTransformation(mContext, 300, 100, CropTransformation.CropType.BOTTOM))
+            .apply(bitmapTransform(
+                new CropTransformation(Utils.dip2px(context, 300), Utils.dip2px(context, 100),
+                    CropType.BOTTOM)))
             .into(holder.image);
 
         break;
       case CropSquare:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.demo)
-            .bitmapTransform(new CropSquareTransformation(mContext))
+            .apply(bitmapTransform(new CropSquareTransformation()))
             .into(holder.image);
         break;
       case CropCircle:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.demo)
-            .bitmapTransform(new CropCircleTransformation(mContext))
+            .apply(bitmapTransform(new CropCircleTransformation()))
             .into(holder.image);
         break;
       case ColorFilter:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.demo)
-            .bitmapTransform(new ColorFilterTransformation(mContext, Color.argb(80, 255, 0, 0)))
+            .apply(bitmapTransform(new ColorFilterTransformation(Color.argb(80, 255, 0, 0))))
             .into(holder.image);
         break;
       case Grayscale:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.demo)
-            .bitmapTransform(new GrayscaleTransformation(mContext))
+            .apply(bitmapTransform(new GrayscaleTransformation()))
             .into(holder.image);
         break;
       case RoundedCorners:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.demo)
-            .bitmapTransform(new RoundedCornersTransformation(mContext, 30, 0,
-                RoundedCornersTransformation.CornerType.BOTTOM))
+            .apply(bitmapTransform(new RoundedCornersTransformation(45, 0,
+                RoundedCornersTransformation.CornerType.BOTTOM)))
             .into(holder.image);
         break;
       case Blur:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.check)
-            .bitmapTransform(new BlurTransformation(mContext, 25, 1))
+            .apply(bitmapTransform(new BlurTransformation(25)))
             .into(holder.image);
         break;
       case Toon:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.demo)
-            .bitmapTransform(new ToonFilterTransformation(mContext))
+            .apply(bitmapTransform(new ToonFilterTransformation()))
             .into(holder.image);
         break;
       case Sepia:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.check)
-            .bitmapTransform(new SepiaFilterTransformation(mContext))
+            .apply(bitmapTransform(new SepiaFilterTransformation()))
             .into(holder.image);
         break;
       case Contrast:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.check)
-            .bitmapTransform(new ContrastFilterTransformation(mContext, 2.0f))
+            .apply(bitmapTransform(new ContrastFilterTransformation(2.0f)))
             .into(holder.image);
         break;
       case Invert:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.check)
-            .bitmapTransform(new InvertFilterTransformation(mContext))
+            .apply(bitmapTransform(new InvertFilterTransformation()))
             .into(holder.image);
         break;
       case Pixel:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.check)
-            .bitmapTransform(new PixelationFilterTransformation(mContext, 20))
+            .apply(bitmapTransform(new PixelationFilterTransformation(20)))
             .into(holder.image);
         break;
       case Sketch:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.check)
-            .bitmapTransform(new SketchFilterTransformation(mContext))
+            .apply(bitmapTransform(new SketchFilterTransformation()))
             .into(holder.image);
         break;
       case Swirl:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.check)
-            .bitmapTransform(
-                new SwirlFilterTransformation(mContext, 0.5f, 1.0f, new PointF(0.5f, 0.5f)))
+            .apply(bitmapTransform(
+                new SwirlFilterTransformation(0.5f, 1.0f, new PointF(0.5f, 0.5f))).dontAnimate())
             .into(holder.image);
         break;
       case Brightness:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.check)
-            .bitmapTransform(new BrightnessFilterTransformation(mContext, 0.5f))
+            .apply(bitmapTransform(new BrightnessFilterTransformation(0.5f)).dontAnimate())
             .into(holder.image);
         break;
       case Kuawahara:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.check)
-            .bitmapTransform(new KuwaharaFilterTransformation(mContext, 25))
+            .apply(bitmapTransform(new KuwaharaFilterTransformation(25)).dontAnimate())
             .into(holder.image);
         break;
       case Vignette:
-        Glide.with(mContext)
+        Glide.with(context)
             .load(R.drawable.check)
-            .bitmapTransform(new VignetteFilterTransformation(mContext, new PointF(0.5f, 0.5f),
-                new float[] { 0.0f, 0.0f, 0.0f }, 0f, 0.75f))
+            .apply(bitmapTransform(new VignetteFilterTransformation(new PointF(0.5f, 0.5f),
+                new float[] { 0.0f, 0.0f, 0.0f }, 0f, 0.75f)).dontAnimate())
             .into(holder.image);
         break;
     }
-    holder.title.setText(mDataSet.get(position).name());
+    holder.title.setText(dataSet.get(position).name());
   }
 
   @Override public int getItemCount() {
-    return mDataSet.size();
+    return dataSet.size();
   }
 
   static class ViewHolder extends RecyclerView.ViewHolder {

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

@@ -1,7 +1,7 @@
 package jp.wasabeef.example.glide;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

example/src/main/res/layout/activity_main.xml

@@ -1,15 +1,23 @@
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout
+  xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
   xmlns:tools="http://schemas.android.com/tools"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
-  android:background="#CC000000"
-  tools:context=".MainActivity"
   >
 
   <android.support.v7.widget.RecyclerView
     android:id="@+id/list"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
+    android:layout_width="0dp"
+    android:layout_height="0dp"
+    android:layout_marginBottom="8dp"
+    android:layout_marginEnd="8dp"
+    android:layout_marginStart="8dp"
+    android:layout_marginTop="8dp"
+    app:layout_constraintBottom_toBottomOf="parent"
+    app:layout_constraintEnd_toEndOf="parent"
+    app:layout_constraintStart_toStartOf="parent"
+    app:layout_constraintTop_toTopOf="parent"
     />
-
-</RelativeLayout>
+</android.support.constraint.ConstraintLayout>

example/src/main/res/layout/layout_list_item.xml

@@ -1,26 +1,37 @@
 <?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<android.support.constraint.ConstraintLayout
+  xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
+  xmlns:tools="http://schemas.android.com/tools"
   android:layout_width="match_parent"
-  android:layout_height="match_parent"
-  android:padding="5dp"
+  android:layout_height="wrap_content"
   >
 
   <ImageView
     android:id="@+id/image"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:layout_centerInParent="true"
-    android:contentDescription="@null"
+    android:layout_width="250dp"
+    android:layout_height="250dp"
+    android:layout_marginBottom="8dp"
+    android:layout_marginEnd="8dp"
+    android:layout_marginStart="8dp"
+    android:layout_marginTop="8dp"
+    android:cropToPadding="false"
+    android:scaleType="fitCenter"
+    app:layout_constraintBottom_toTopOf="@+id/title"
+    app:layout_constraintEnd_toEndOf="parent"
+    app:layout_constraintStart_toStartOf="parent"
+    app:layout_constraintTop_toTopOf="parent"
     />
-
   <TextView
     android:id="@+id/title"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
-    android:layout_below="@id/image"
-    android:layout_centerHorizontal="true"
-    android:layout_marginTop="5dp"
-    android:textColor="@android:color/white"
+    android:layout_marginBottom="8dp"
+    android:layout_marginEnd="8dp"
+    android:layout_marginStart="8dp"
+    android:text="title"
+    app:layout_constraintBottom_toBottomOf="parent"
+    app:layout_constraintEnd_toEndOf="parent"
+    app:layout_constraintStart_toStartOf="parent"
     />
-
-</RelativeLayout>
+</android.support.constraint.ConstraintLayout>

example/src/main/res/values/colors.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <color name="colorPrimary">#3F51B5</color>
+  <color name="colorPrimaryDark">#303F9F</color>
+  <color name="colorAccent">#FF4081</color>
+</resources>

example/src/main/res/values/styles.xml

@@ -3,6 +3,9 @@
   <!-- Base application theme. -->
   <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
     <!-- Customize your theme here. -->
+    <item name="colorPrimary">@color/colorPrimary</item>
+    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+    <item name="colorAccent">@color/colorAccent</item>
   </style>
 
-</resources>
+</resources>

gradle.properties

@@ -1,13 +1,11 @@
-VERSION_NAME=1.4.0
+VERSION_NAME=3.1.0
 GROUP=jp.wasabeef
 ARTIFACT_ID=glide-transformations
 
-COMPILE_SDK_VERSION=23
-BUILD_TOOLS_VERSION=23.0.2
-TARGET_SDK_VERSION=23
-# Warning:Renderscript support mode is not currently supported with renderscript target 21+
-RENDERSCRIPT_TARGET_API=20
-MIN_SDK_VERSION=11
+COMPILE_SDK_VERSION=27
+BUILD_TOOLS_VERSION=27.0.3
+TARGET_SDK_VERSION=27
+MIN_SDK_VERSION=14
 
 POM_DESCRIPTION=which provides simple Tranformations to Glide
 POM_URL=https://github.com/wasabeef/glide-transformations
@@ -23,6 +21,6 @@ POM_DEVELOPER_EMAIL=dadadada.chop@gmail.com
 POM_DEVELOPER_URL=wasabeef.jp
 ISSUE_URL=https://github.com/wasabeef/glide-transformations/issues
 
-SUPPORT_PACKAGE_VERSION=23.1.1
-GLIDE_VERSION=3.6.1
-GPUIMAGE_VERSION=1.3.0
+SUPPORT_PACKAGE_VERSION=27.0.2
+GLIDE_VERSION=4.5.0
+GPUIMAGE_VERSION=1.4.1

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Wed Apr 10 15:27:10 PDT 2013
+#Thu Jan 25 11:48:25 JST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.11-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.3-all.zip

gradlew

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,12 +6,30 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save ( ) {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell
 if "%OS%"=="Windows_NT" setlocal
 
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS=
-
 set DIRNAME=%~dp0
 if "%DIRNAME%" == "" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
 @rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome
 
@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail
 
 :init
-@rem Get command-line arguments, handling Windowz variants
+@rem Get command-line arguments, handling Windows variants
 
 if not "%OS%" == "Windows_NT" goto win9xME_args
-if "%@eval[2+2]" == "4" goto 4NT_args
 
 :win9xME_args
 @rem Slurp the command line arguments.
@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute
 
 set CMD_LINE_ARGS=%*
-goto execute
-
-:4NT_args
-@rem Get arguments from the 4NT Shell from JP Software
-set CMD_LINE_ARGS=%$
 
 :execute
 @rem Setup the command line

transformations/build.gradle

@@ -2,53 +2,33 @@ apply plugin: 'com.android.library'
 apply plugin: 'com.novoda.bintray-release'
 
 android {
-    compileSdkVersion COMPILE_SDK_VERSION as int
-    buildToolsVersion BUILD_TOOLS_VERSION
+  compileSdkVersion COMPILE_SDK_VERSION as int
+  buildToolsVersion BUILD_TOOLS_VERSION
 
-    defaultConfig {
-        minSdkVersion MIN_SDK_VERSION as int
-        targetSdkVersion TARGET_SDK_VERSION as int
-        versionCode "git rev-list origin/master --count".execute().text.toInteger()
-        versionName VERSION_NAME
+  defaultConfig {
+    minSdkVersion MIN_SDK_VERSION as int
+    targetSdkVersion TARGET_SDK_VERSION as int
+    versionCode "git rev-list origin/master --count".execute().text.toInteger()
+    versionName VERSION_NAME
 
-        // Warning:Renderscript support mode is not currently supported with renderscript target 21+
-        renderscriptTargetApi RENDERSCRIPT_TARGET_API as int
-        renderscriptSupportModeEnabled true
-
-        consumerProguardFiles 'proguard-rules.txt'
-    }
+    consumerProguardFiles 'proguard-rules.txt'
+  }
 }
 
 dependencies {
-    compile "com.github.bumptech.glide:glide:${GLIDE_VERSION}"
-    provided "jp.co.cyberagent.android.gpuimage:gpuimage-library:${GPUIMAGE_VERSION}"
-}
-
-task androidJavadocs(type: Javadoc) {
-    source = android.sourceSets.main.java.srcDirs
-    classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
-}
-
-task androidJavadocsJar(type: Jar, dependsOn: androidJavadocs) {
-    classifier = 'javadoc'
-    from androidJavadocs.destinationDir
-}
-
-task androidSourcesJar(type: Jar) {
-    classifier = 'sources'
-    from android.sourceSets.main.java.srcDirs
-}
-
-artifacts {
-    archives androidSourcesJar
-    archives androidJavadocsJar
+  implementation "com.github.bumptech.glide:glide:${GLIDE_VERSION}"
+  annotationProcessor "com.github.bumptech.glide:compiler:${GLIDE_VERSION}"
+  compileOnly "jp.co.cyberagent.android.gpuimage:gpuimage-library:${GPUIMAGE_VERSION}"
 }
 
 publish {
-    userOrg = POM_DEVELOPER_ID
-    groupId = GROUP
-    artifactId = ARTIFACT_ID
-    publishVersion = VERSION_NAME
-    desc = POM_DESCRIPTION
-    website = POM_URL
+  userOrg = POM_DEVELOPER_ID
+  groupId = GROUP
+  artifactId = ARTIFACT_ID
+  publishVersion = VERSION_NAME
+  desc = POM_DESCRIPTION
+  website = POM_URL
+  bintrayUser = BINTRAY_USER
+  bintrayKey = BINTRAY_API_KEY
+  autoPublish = false
 }

transformations/proguard-rules.txt

@@ -1,7 +1,8 @@
--keepclasseswithmembernames class * {
-    native <methods>;
+-dontwarn jp.co.cyberagent.android.gpuimage.**
+
+-keep public class * implements com.bumptech.glide.module.GlideModule
+-keep public class * extends com.bumptech.glide.AppGlideModule
+-keep public enum com.bumptech.glide.load.resource.bitmap.ImageHeaderParser$** {
+  **[] $VALUES;
+  public *;
 }
-
--keep class android.support.v8.renderscript.** { *; }
-
--dontwarn jp.co.cyberagent.android.gpuimage.**

transformations/src/androidTest/java/jp/wasabeef/glide/transformations/ApplicationTest.java

@@ -8,7 +8,7 @@ import android.test.ApplicationTestCase;
  */
 public class ApplicationTest extends ApplicationTestCase<Application> {
 
-    public ApplicationTest() {
-        super(Application.class);
-    }
+  public ApplicationTest() {
+    super(Application.class);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/BitmapTransformation.java

@@ -0,0 +1,65 @@
+package jp.wasabeef.glide.transformations;
+
+/**
+ * Copyright (C) 2018 Wasabeef
+ * Copyright 2014 Google, Inc. All rights reserved.
+ *
+ * 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 android.content.Context;
+import android.graphics.Bitmap;
+import android.support.annotation.NonNull;
+import com.bumptech.glide.Glide;
+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 com.bumptech.glide.request.target.Target;
+import com.bumptech.glide.util.Util;
+import java.security.MessageDigest;
+
+public abstract class BitmapTransformation implements Transformation<Bitmap> {
+
+  @Override
+  public final Resource<Bitmap> transform(Context context, Resource<Bitmap> resource, int outWidth,
+      int outHeight) {
+    if (!Util.isValidDimensions(outWidth, outHeight)) {
+      throw new IllegalArgumentException(
+          "Cannot apply transformation on width: " + outWidth + " or height: " + outHeight
+              + " less than or equal to zero and not Target.SIZE_ORIGINAL");
+    }
+    BitmapPool bitmapPool = Glide.get(context).getBitmapPool();
+    Bitmap toTransform = resource.get();
+    int targetWidth = outWidth == Target.SIZE_ORIGINAL ? toTransform.getWidth() : outWidth;
+    int targetHeight = outHeight == Target.SIZE_ORIGINAL ? toTransform.getHeight() : outHeight;
+    Bitmap transformed = transform(context.getApplicationContext(), bitmapPool, toTransform, targetWidth, targetHeight);
+
+    final Resource<Bitmap> result;
+    if (toTransform.equals(transformed)) {
+      result = resource;
+    } else {
+      result = BitmapResource.obtain(transformed, bitmapPool);
+    }
+    return result;
+  }
+
+  protected abstract Bitmap transform(@NonNull Context context, @NonNull BitmapPool pool,
+      @NonNull Bitmap toTransform, int outWidth, int outHeight);
+
+  @Override public abstract void updateDiskCacheKey(MessageDigest messageDigest);
+
+  @Override public abstract boolean equals(Object o);
+
+  @Override public abstract int hashCode();
+}

transformations/src/main/java/jp/wasabeef/glide/transformations/BlurTransformation.java

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,101 +20,82 @@ import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Paint;
-import android.support.v8.renderscript.Allocation;
-import android.support.v8.renderscript.Element;
-import android.support.v8.renderscript.RSRuntimeException;
-import android.support.v8.renderscript.RenderScript;
-import android.support.v8.renderscript.ScriptIntrinsicBlur;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.Transformation;
-import com.bumptech.glide.load.engine.Resource;
+import android.os.Build;
+import android.renderscript.RSRuntimeException;
+import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
-import com.bumptech.glide.load.resource.bitmap.BitmapResource;
+import java.security.MessageDigest;
 import jp.wasabeef.glide.transformations.internal.FastBlur;
+import jp.wasabeef.glide.transformations.internal.RSBlur;
 
-public class BlurTransformation implements Transformation<Bitmap> {
+public class BlurTransformation extends BitmapTransformation {
+
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.BlurTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
   private static int MAX_RADIUS = 25;
   private static int DEFAULT_DOWN_SAMPLING = 1;
 
-  private Context mContext;
-  private BitmapPool mBitmapPool;
+  private int radius;
+  private int sampling;
 
-  private int mRadius;
-  private int mSampling;
-
-  public BlurTransformation(Context context) {
-    this(context, Glide.get(context).getBitmapPool(), MAX_RADIUS, DEFAULT_DOWN_SAMPLING);
+  public BlurTransformation() {
+    this(MAX_RADIUS, DEFAULT_DOWN_SAMPLING);
   }
 
-  public BlurTransformation(Context context, BitmapPool pool) {
-    this(context, pool, MAX_RADIUS, DEFAULT_DOWN_SAMPLING);
+  public BlurTransformation(int radius) {
+    this(radius, DEFAULT_DOWN_SAMPLING);
   }
 
-  public BlurTransformation(Context context, BitmapPool pool, int radius) {
-    this(context, pool, radius, DEFAULT_DOWN_SAMPLING);
+  public BlurTransformation(int radius, int sampling) {
+    this.radius = radius;
+    this.sampling = sampling;
   }
 
-  public BlurTransformation(Context context, int radius) {
-    this(context, Glide.get(context).getBitmapPool(), radius, DEFAULT_DOWN_SAMPLING);
-  }
+  @Override protected Bitmap transform(@NonNull Context context, @NonNull BitmapPool pool,
+      @NonNull Bitmap toTransform, int outWidth, int outHeight) {
 
-  public BlurTransformation(Context context, int radius, int sampling) {
-    this(context, Glide.get(context).getBitmapPool(), radius, sampling);
-  }
+    int width = toTransform.getWidth();
+    int height = toTransform.getHeight();
+    int scaledWidth = width / sampling;
+    int scaledHeight = height / sampling;
 
-  public BlurTransformation(Context context, BitmapPool pool, int radius, int sampling) {
-    mContext = context.getApplicationContext();
-    mBitmapPool = pool;
-    mRadius = radius;
-    mSampling = sampling;
-  }
-
-  @Override
-  public Resource<Bitmap> transform(Resource<Bitmap> resource, int outWidth, int outHeight) {
-    Bitmap source = resource.get();
-
-    int width = source.getWidth();
-    int height = source.getHeight();
-    int scaledWidth = width / mSampling;
-    int scaledHeight = height / mSampling;
-
-    Bitmap bitmap = mBitmapPool.get(scaledWidth, scaledHeight, Bitmap.Config.ARGB_8888);
-    if (bitmap == null) {
-      bitmap = Bitmap.createBitmap(scaledWidth, scaledHeight, Bitmap.Config.ARGB_8888);
-    }
+    Bitmap bitmap = pool.get(scaledWidth, scaledHeight, Bitmap.Config.ARGB_8888);
 
     Canvas canvas = new Canvas(bitmap);
-    canvas.scale(1 / (float) mSampling, 1 / (float) mSampling);
+    canvas.scale(1 / (float) sampling, 1 / (float) sampling);
     Paint paint = new Paint();
     paint.setFlags(Paint.FILTER_BITMAP_FLAG);
-    canvas.drawBitmap(source, 0, 0, paint);
+    canvas.drawBitmap(toTransform, 0, 0, paint);
 
-    RenderScript rs = null;
-    try {
-      rs = RenderScript.create(mContext);
-      Allocation input =
-          Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_NONE,
-              Allocation.USAGE_SCRIPT);
-      Allocation output = Allocation.createTyped(rs, input.getType());
-      ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
-
-      blur.setInput(input);
-      blur.setRadius(mRadius);
-      blur.forEach(output);
-      output.copyTo(bitmap);
-    } catch (RSRuntimeException e) {
-      bitmap = FastBlur.doBlur(bitmap, mRadius, true);
-    } finally {
-      if (rs != null) {
-        rs.destroy();
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
+      try {
+        bitmap = RSBlur.blur(context, bitmap, radius);
+      } catch (RSRuntimeException e) {
+        bitmap = FastBlur.blur(bitmap, radius, true);
       }
+    } else {
+      bitmap = FastBlur.blur(bitmap, radius, true);
     }
 
-    return BitmapResource.obtain(bitmap, mBitmapPool);
+    return bitmap;
   }
 
-  @Override public String getId() {
-    return "BlurTransformation(radius=" + mRadius + ", sampling=" + mSampling + ")";
+  @Override public String toString() {
+    return "BlurTransformation(radius=" + radius + ", sampling=" + sampling + ")";
+  }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof BlurTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
   }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/ColorFilterTransformation.java

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,51 +22,54 @@ import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.graphics.PorterDuff;
 import android.graphics.PorterDuffColorFilter;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.Transformation;
-import com.bumptech.glide.load.engine.Resource;
+import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
-import com.bumptech.glide.load.resource.bitmap.BitmapResource;
+import java.security.MessageDigest;
 
-public class ColorFilterTransformation implements Transformation<Bitmap> {
+public class ColorFilterTransformation extends BitmapTransformation {
 
-  private BitmapPool mBitmapPool;
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.ColorFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
-  private int mColor;
+  private int color;
 
-  public ColorFilterTransformation(Context context, int color) {
-    this(Glide.get(context).getBitmapPool(), color);
+  public ColorFilterTransformation(int color) {
+    this.color = color;
   }
 
-  public ColorFilterTransformation(BitmapPool pool, int color) {
-    mBitmapPool = pool;
-    mColor = color;
-  }
-
-  @Override
-  public Resource<Bitmap> transform(Resource<Bitmap> resource, int outWidth, int outHeight) {
-    Bitmap source = resource.get();
-
-    int width = source.getWidth();
-    int height = source.getHeight();
+  @Override protected Bitmap transform(@NonNull Context context, @NonNull BitmapPool pool,
+      @NonNull Bitmap toTransform, int outWidth, int outHeight) {
+    int width = toTransform.getWidth();
+    int height = toTransform.getHeight();
 
     Bitmap.Config config =
-        source.getConfig() != null ? source.getConfig() : Bitmap.Config.ARGB_8888;
-    Bitmap bitmap = mBitmapPool.get(width, height, config);
-    if (bitmap == null) {
-      bitmap = Bitmap.createBitmap(width, height, config);
-    }
+        toTransform.getConfig() != null ? toTransform.getConfig() : Bitmap.Config.ARGB_8888;
+    Bitmap bitmap = pool.get(width, height, config);
 
     Canvas canvas = new Canvas(bitmap);
     Paint paint = new Paint();
     paint.setAntiAlias(true);
-    paint.setColorFilter(new PorterDuffColorFilter(mColor, PorterDuff.Mode.SRC_ATOP));
-    canvas.drawBitmap(source, 0, 0, paint);
+    paint.setColorFilter(new PorterDuffColorFilter(color, PorterDuff.Mode.SRC_ATOP));
+    canvas.drawBitmap(toTransform, 0, 0, paint);
 
-    return BitmapResource.obtain(bitmap, mBitmapPool);
+    return bitmap;
   }
 
-  @Override public String getId() {
-    return "ColorFilterTransformation(color=" + mColor + ")";
+  @Override public String toString() {
+    return "ColorFilterTransformation(color=" + color + ")";
+  }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof ColorFilterTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
   }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/CropCircleTransformation.java

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,61 +18,41 @@ package jp.wasabeef.glide.transformations;
 
 import android.content.Context;
 import android.graphics.Bitmap;
-import android.graphics.BitmapShader;
-import android.graphics.Canvas;
-import android.graphics.Matrix;
-import android.graphics.Paint;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.Transformation;
-import com.bumptech.glide.load.engine.Resource;
+import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
-import com.bumptech.glide.load.resource.bitmap.BitmapResource;
+import com.bumptech.glide.load.resource.bitmap.TransformationUtils;
+import com.bumptech.glide.request.RequestOptions;
+import java.security.MessageDigest;
 
-public class CropCircleTransformation implements Transformation<Bitmap> {
+/**
+ * @deprecated Use {@link RequestOptions#circleCrop()}.
+ */
+@Deprecated
+public class CropCircleTransformation extends BitmapTransformation {
 
-  private BitmapPool mBitmapPool;
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.CropCircleTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
-  public CropCircleTransformation(Context context) {
-    this(Glide.get(context).getBitmapPool());
+  @Override protected Bitmap transform(@NonNull Context context, @NonNull BitmapPool pool,
+      @NonNull Bitmap toTransform, int outWidth, int outHeight) {
+    return TransformationUtils.circleCrop(pool, toTransform, outWidth, outHeight);
   }
 
-  public CropCircleTransformation(BitmapPool pool) {
-    this.mBitmapPool = pool;
-  }
-
-  @Override
-  public Resource<Bitmap> transform(Resource<Bitmap> resource, int outWidth, int outHeight) {
-    Bitmap source = resource.get();
-    int size = Math.min(source.getWidth(), source.getHeight());
-
-    int width = (source.getWidth() - size) / 2;
-    int height = (source.getHeight() - size) / 2;
-
-    Bitmap bitmap = mBitmapPool.get(size, size, Bitmap.Config.ARGB_8888);
-    if (bitmap == null) {
-      bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
-    }
-
-    Canvas canvas = new Canvas(bitmap);
-    Paint paint = new Paint();
-    BitmapShader shader =
-        new BitmapShader(source, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP);
-    if (width != 0 || height != 0) {
-      // source isn't square, move viewport to center
-      Matrix matrix = new Matrix();
-      matrix.setTranslate(-width, -height);
-      shader.setLocalMatrix(matrix);
-    }
-    paint.setShader(shader);
-    paint.setAntiAlias(true);
-
-    float r = size / 2f;
-    canvas.drawCircle(r, r, r, paint);
-
-    return BitmapResource.obtain(bitmap, mBitmapPool);
-  }
-
-  @Override public String getId() {
+  @Override public String toString() {
     return "CropCircleTransformation()";
   }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof CropCircleTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/CropSquareTransformation.java

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,45 +18,39 @@ package jp.wasabeef.glide.transformations;
 
 import android.content.Context;
 import android.graphics.Bitmap;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.Transformation;
-import com.bumptech.glide.load.engine.Resource;
+import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
-import com.bumptech.glide.load.resource.bitmap.BitmapResource;
+import com.bumptech.glide.load.resource.bitmap.TransformationUtils;
+import java.security.MessageDigest;
 
-public class CropSquareTransformation implements Transformation<Bitmap> {
+public class CropSquareTransformation extends BitmapTransformation {
 
-  private BitmapPool mBitmapPool;
-  private int mWidth;
-  private int mHeight;
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.CropSquareTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
-  public CropSquareTransformation(Context context) {
-    this(Glide.get(context).getBitmapPool());
+  private int size;
+
+  @Override protected Bitmap transform(@NonNull Context context, @NonNull BitmapPool pool,
+      @NonNull Bitmap toTransform, int outWidth, int outHeight) {
+    this.size = Math.max(outWidth, outHeight);
+    return TransformationUtils.centerCrop(pool, toTransform, size, size);
   }
 
-  public CropSquareTransformation(BitmapPool pool) {
-    this.mBitmapPool = pool;
+  @Override public String toString() {
+    return "CropSquareTransformation(size=" + size + ")";
   }
 
-  @Override
-  public Resource<Bitmap> transform(Resource<Bitmap> resource, int outWidth, int outHeight) {
-    Bitmap source = resource.get();
-    int size = Math.min(source.getWidth(), source.getHeight());
-
-    mWidth = (source.getWidth() - size) / 2;
-    mHeight = (source.getHeight() - size) / 2;
-
-    Bitmap.Config config =
-        source.getConfig() != null ? source.getConfig() : Bitmap.Config.ARGB_8888;
-    Bitmap bitmap = mBitmapPool.get(mWidth, mHeight, config);
-    if (bitmap == null) {
-      bitmap = Bitmap.createBitmap(source, mWidth, mHeight, size, size);
-    }
-
-    return BitmapResource.obtain(bitmap, mBitmapPool);
+  @Override public boolean equals(Object o) {
+    return o instanceof CropSquareTransformation;
   }
 
-  @Override public String getId() {
-    return "CropSquareTransformation(width=" + mWidth + ", height=" + mHeight + ")";
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
   }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/CropTransformation.java

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,13 +20,15 @@ import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.RectF;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.Transformation;
-import com.bumptech.glide.load.engine.Resource;
+import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
-import com.bumptech.glide.load.resource.bitmap.BitmapResource;
+import java.security.MessageDigest;
 
-public class CropTransformation implements Transformation<Bitmap> {
+public class CropTransformation extends BitmapTransformation {
+
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.CropTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
   public enum CropType {
     TOP,
@@ -34,81 +36,74 @@ public class CropTransformation implements Transformation<Bitmap> {
     BOTTOM
   }
 
-  private BitmapPool mBitmapPool;
-  private int mWidth;
-  private int mHeight;
+  private int width;
+  private int height;
 
-  private CropType mCropType = CropType.CENTER;
+  private CropType cropType = CropType.CENTER;
 
-  public CropTransformation(Context context) {
-    this(Glide.get(context).getBitmapPool());
+  public CropTransformation(int width, int height) {
+    this(width, height, CropType.CENTER);
   }
 
-  public CropTransformation(BitmapPool pool) {
-    this(pool, 0, 0);
+  public CropTransformation(int width, int height, CropType cropType) {
+    this.width = width;
+    this.height = height;
+    this.cropType = cropType;
   }
 
-  public CropTransformation(Context context, int width, int height) {
-    this(Glide.get(context).getBitmapPool(), width, height);
-  }
+  @Override protected Bitmap transform(@NonNull Context context, @NonNull BitmapPool pool,
+      @NonNull Bitmap toTransform, int outWidth, int outHeight) {
 
-  public CropTransformation(BitmapPool pool, int width, int height) {
-    this(pool, width, height, CropType.CENTER);
-  }
-
-  public CropTransformation(Context context, int width, int height, CropType cropType) {
-    this(Glide.get(context).getBitmapPool(), width, height, cropType);
-  }
-
-  public CropTransformation(BitmapPool pool, int width, int height, CropType cropType) {
-    mBitmapPool = pool;
-    mWidth = width;
-    mHeight = height;
-    mCropType = cropType;
-  }
-
-  @Override
-  public Resource<Bitmap> transform(Resource<Bitmap> resource, int outWidth, int outHeight) {
-    Bitmap source = resource.get();
-    mWidth = mWidth == 0 ? source.getWidth() : mWidth;
-    mHeight = mHeight == 0 ? source.getHeight() : mHeight;
+    width = width == 0 ? toTransform.getWidth() : width;
+    height = height == 0 ? toTransform.getHeight() : height;
 
     Bitmap.Config config =
-        source.getConfig() != null ? source.getConfig() : Bitmap.Config.ARGB_8888;
-    Bitmap bitmap = mBitmapPool.get(mWidth, mHeight, config);
-    if (bitmap == null) {
-      bitmap = Bitmap.createBitmap(mWidth, mHeight, config);
-    }
+        toTransform.getConfig() != null ? toTransform.getConfig() : Bitmap.Config.ARGB_8888;
+    Bitmap bitmap = pool.get(width, height, config);
 
-    float scaleX = (float) mWidth / source.getWidth();
-    float scaleY = (float) mHeight / source.getHeight();
+    bitmap.setHasAlpha(true);
+
+    float scaleX = (float) width / toTransform.getWidth();
+    float scaleY = (float) height / toTransform.getHeight();
     float scale = Math.max(scaleX, scaleY);
 
-    float scaledWidth = scale * source.getWidth();
-    float scaledHeight = scale * source.getHeight();
-    float left = (mWidth - scaledWidth) / 2;
+    float scaledWidth = scale * toTransform.getWidth();
+    float scaledHeight = scale * toTransform.getHeight();
+    float left = (width - scaledWidth) / 2;
     float top = getTop(scaledHeight);
     RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
 
     Canvas canvas = new Canvas(bitmap);
-    canvas.drawBitmap(source, null, targetRect, null);
+    canvas.drawBitmap(toTransform, null, targetRect, null);
 
-    return BitmapResource.obtain(bitmap, mBitmapPool);
+    return bitmap;
   }
 
-  @Override public String getId() {
-    return "CropTransformation(width=" + mWidth + ", height=" + mHeight + ", cropType=" + mCropType
+  @Override public String toString() {
+    return "CropTransformation(width=" + width + ", height=" + height + ", cropType=" + cropType
         + ")";
   }
 
+  @Override public boolean equals(Object o) {
+    return o instanceof CropTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
+
   private float getTop(float scaledHeight) {
-    switch (mCropType) {
+    switch (cropType) {
       case TOP:
         return 0;
       case CENTER:
-        return (mHeight - scaledHeight) / 2;
+        return (height - scaledHeight) / 2;
       case BOTTOM:
-        return mHeight - scaledHeight;
+        return height - scaledHeight;
       default:
         return 0;
     }

transformations/src/main/java/jp/wasabeef/glide/transformations/GrayscaleTransformation.java

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,49 +22,49 @@ import android.graphics.Canvas;
 import android.graphics.ColorMatrix;
 import android.graphics.ColorMatrixColorFilter;
 import android.graphics.Paint;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.Transformation;
-import com.bumptech.glide.load.engine.Resource;
+import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
-import com.bumptech.glide.load.resource.bitmap.BitmapResource;
+import java.security.MessageDigest;
 
-public class GrayscaleTransformation implements Transformation<Bitmap> {
+public class GrayscaleTransformation extends BitmapTransformation {
 
-  private BitmapPool mBitmapPool;
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.GrayscaleTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
-  public GrayscaleTransformation(Context context) {
-    this(Glide.get(context).getBitmapPool());
-  }
-
-  public GrayscaleTransformation(BitmapPool pool) {
-    mBitmapPool = pool;
-  }
-
-  @Override
-  public Resource<Bitmap> transform(Resource<Bitmap> resource, int outWidth, int outHeight) {
-    Bitmap source = resource.get();
-
-    int width = source.getWidth();
-    int height = source.getHeight();
+  @Override protected Bitmap transform(@NonNull Context context, @NonNull BitmapPool pool,
+      @NonNull Bitmap toTransform, int outWidth, int outHeight) {
+    int width = toTransform.getWidth();
+    int height = toTransform.getHeight();
 
     Bitmap.Config config =
-        source.getConfig() != null ? source.getConfig() : Bitmap.Config.ARGB_8888;
-    Bitmap bitmap = mBitmapPool.get(width, height, config);
-    if (bitmap == null) {
-      bitmap = Bitmap.createBitmap(width, height, config);
-    }
+        toTransform.getConfig() != null ? toTransform.getConfig() : Bitmap.Config.ARGB_8888;
+    Bitmap bitmap = pool.get(width, height, config);
 
     Canvas canvas = new Canvas(bitmap);
     ColorMatrix saturation = new ColorMatrix();
     saturation.setSaturation(0f);
     Paint paint = new Paint();
     paint.setColorFilter(new ColorMatrixColorFilter(saturation));
-    canvas.drawBitmap(source, 0, 0, paint);
+    canvas.drawBitmap(toTransform, 0, 0, paint);
 
-    return BitmapResource.obtain(bitmap, mBitmapPool);
+    return bitmap;
   }
 
-  @Override public String getId() {
+  @Override public String toString() {
     return "GrayscaleTransformation()";
   }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof GrayscaleTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/MaskTransformation.java

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,63 +23,65 @@ import android.graphics.Paint;
 import android.graphics.PorterDuff;
 import android.graphics.PorterDuffXfermode;
 import android.graphics.drawable.Drawable;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.Transformation;
-import com.bumptech.glide.load.engine.Resource;
+import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
-import com.bumptech.glide.load.resource.bitmap.BitmapResource;
+import java.security.MessageDigest;
 import jp.wasabeef.glide.transformations.internal.Utils;
 
-public class MaskTransformation implements Transformation<Bitmap> {
+public class MaskTransformation extends BitmapTransformation {
 
-  private static Paint mMaskingPaint = new Paint();
-  private Context mContext;
-  private BitmapPool mBitmapPool;
-  private int mMaskId;
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.MaskTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
+  private static Paint paint = new Paint();
+  private int maskId;
 
   static {
-    mMaskingPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
+    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
   }
 
   /**
    * @param maskId If you change the mask file, please also rename the mask file, or Glide will get
-   * the cache with the old mask. Because getId() return the same values if using the
+   * the cache with the old mask. Because key() return the same values if using the
    * same make file name. If you have a good idea please tell us, thanks.
    */
-  public MaskTransformation(Context context, int maskId) {
-    this(context, Glide.get(context).getBitmapPool(), maskId);
+  public MaskTransformation(int maskId) {
+    this.maskId = maskId;
   }
 
-  public MaskTransformation(Context context, BitmapPool pool, int maskId) {
-    mBitmapPool = pool;
-    mContext = context.getApplicationContext();
-    mMaskId = maskId;
-  }
+  @Override protected Bitmap transform(@NonNull Context context, @NonNull BitmapPool pool,
+      @NonNull Bitmap toTransform, int outWidth, int outHeight) {
+    int width = toTransform.getWidth();
+    int height = toTransform.getHeight();
 
-  @Override
-  public Resource<Bitmap> transform(Resource<Bitmap> resource, int outWidth, int outHeight) {
-    Bitmap source = resource.get();
+    Bitmap bitmap = pool.get(width, height, Bitmap.Config.ARGB_8888);
+    bitmap.setHasAlpha(true);
 
-    int width = source.getWidth();
-    int height = source.getHeight();
+    Drawable mask = Utils.getMaskDrawable(context.getApplicationContext(), maskId);
 
-    Bitmap result = mBitmapPool.get(width, height, Bitmap.Config.ARGB_8888);
-    if (result == null) {
-      result = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
-    }
-
-    Drawable mask = Utils.getMaskDrawable(mContext, mMaskId);
-
-    Canvas canvas = new Canvas(result);
+    Canvas canvas = new Canvas(bitmap);
     mask.setBounds(0, 0, width, height);
     mask.draw(canvas);
-    canvas.drawBitmap(source, 0, 0, mMaskingPaint);
+    canvas.drawBitmap(toTransform, 0, 0, paint);
 
-    return BitmapResource.obtain(result, mBitmapPool);
+    return bitmap;
   }
 
-  @Override public String getId() {
-    return "MaskTransformation(maskId=" + mContext.getResources().getResourceEntryName(mMaskId)
-        + ")";
+  @Override public String toString() {
+    return "MaskTransformation(maskId=" + maskId + ")";
+  }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof MaskTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
   }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/RoundedCornersTransformation.java

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,13 +23,16 @@ import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.graphics.RectF;
 import android.graphics.Shader;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.Transformation;
-import com.bumptech.glide.load.engine.Resource;
+import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
-import com.bumptech.glide.load.resource.bitmap.BitmapResource;
 
-public class RoundedCornersTransformation implements Transformation<Bitmap> {
+import java.security.MessageDigest;
+
+public class RoundedCornersTransformation extends BitmapTransformation {
+
+  private static final int VERSION = 1;
+  private static final String ID = "jp.wasabeef.glide.transformations.RoundedCornersTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
   public enum CornerType {
     ALL,
@@ -39,61 +42,45 @@ public class RoundedCornersTransformation implements Transformation<Bitmap> {
     DIAGONAL_FROM_TOP_LEFT, DIAGONAL_FROM_TOP_RIGHT
   }
 
-  private BitmapPool mBitmapPool;
-  private int mRadius;
-  private int mDiameter;
-  private int mMargin;
-  private CornerType mCornerType;
+  private int radius;
+  private int diameter;
+  private int margin;
+  private CornerType cornerType;
 
-  public RoundedCornersTransformation(Context context, int radius, int margin) {
-    this(context, radius, margin, CornerType.ALL);
+  public RoundedCornersTransformation(int radius, int margin) {
+    this(radius, margin, CornerType.ALL);
   }
 
-  public RoundedCornersTransformation(BitmapPool pool, int radius, int margin) {
-    this(pool, radius, margin, CornerType.ALL);
+  public RoundedCornersTransformation(int radius, int margin, CornerType cornerType) {
+    this.radius = radius;
+    this.diameter = this.radius * 2;
+    this.margin = margin;
+    this.cornerType = cornerType;
   }
 
-  public RoundedCornersTransformation(Context context, int radius, int margin,
-      CornerType cornerType) {
-    this(Glide.get(context).getBitmapPool(), radius, margin, cornerType);
-  }
+  @Override protected Bitmap transform(@NonNull Context context, @NonNull BitmapPool pool,
+      @NonNull Bitmap toTransform, int outWidth, int outHeight) {
+    int width = toTransform.getWidth();
+    int height = toTransform.getHeight();
 
-  public RoundedCornersTransformation(BitmapPool pool, int radius, int margin,
-      CornerType cornerType) {
-    mBitmapPool = pool;
-    mRadius = radius;
-    mDiameter = mRadius * 2;
-    mMargin = margin;
-    mCornerType = cornerType;
-  }
-
-  @Override
-  public Resource<Bitmap> transform(Resource<Bitmap> resource, int outWidth, int outHeight) {
-    Bitmap source = resource.get();
-
-    int width = source.getWidth();
-    int height = source.getHeight();
-
-    Bitmap bitmap = mBitmapPool.get(width, height, Bitmap.Config.ARGB_8888);
-    if (bitmap == null) {
-      bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
-    }
+    Bitmap bitmap = pool.get(width, height, Bitmap.Config.ARGB_8888);
+    bitmap.setHasAlpha(true);
 
     Canvas canvas = new Canvas(bitmap);
     Paint paint = new Paint();
     paint.setAntiAlias(true);
-    paint.setShader(new BitmapShader(source, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP));
+    paint.setShader(new BitmapShader(toTransform, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP));
     drawRoundRect(canvas, paint, width, height);
-    return BitmapResource.obtain(bitmap, mBitmapPool);
+    return bitmap;
   }
 
   private void drawRoundRect(Canvas canvas, Paint paint, float width, float height) {
-    float right = width - mMargin;
-    float bottom = height - mMargin;
+    float right = width - margin;
+    float bottom = height - margin;
 
-    switch (mCornerType) {
+    switch (cornerType) {
       case ALL:
-        canvas.drawRoundRect(new RectF(mMargin, mMargin, right, bottom), mRadius, mRadius, paint);
+        canvas.drawRoundRect(new RectF(margin, margin, right, bottom), radius, radius, paint);
         break;
       case TOP_LEFT:
         drawTopLeftRoundRect(canvas, paint, right, bottom);
@@ -138,118 +125,127 @@ public class RoundedCornersTransformation implements Transformation<Bitmap> {
         drawDiagonalFromTopRightRoundRect(canvas, paint, right, bottom);
         break;
       default:
-        canvas.drawRoundRect(new RectF(mMargin, mMargin, right, bottom), mRadius, mRadius, paint);
+        canvas.drawRoundRect(new RectF(margin, margin, right, bottom), radius, radius, paint);
         break;
     }
   }
 
   private void drawTopLeftRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
-    canvas.drawRoundRect(new RectF(mMargin, mMargin, mMargin + mDiameter, mMargin + mDiameter),
-        mRadius, mRadius, paint);
-    canvas.drawRect(new RectF(mMargin, mMargin + mRadius, mMargin + mRadius, bottom), paint);
-    canvas.drawRect(new RectF(mMargin + mRadius, mMargin, right, bottom), paint);
+    canvas.drawRoundRect(new RectF(margin, margin, margin + diameter, margin + diameter), radius,
+        radius, paint);
+    canvas.drawRect(new RectF(margin, margin + radius, margin + radius, bottom), paint);
+    canvas.drawRect(new RectF(margin + radius, margin, right, bottom), paint);
   }
 
   private void drawTopRightRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
-    canvas.drawRoundRect(new RectF(right - mDiameter, mMargin, right, mMargin + mDiameter), mRadius,
-        mRadius, paint);
-    canvas.drawRect(new RectF(mMargin, mMargin, right - mRadius, bottom), paint);
-    canvas.drawRect(new RectF(right - mRadius, mMargin + mRadius, right, bottom), paint);
+    canvas.drawRoundRect(new RectF(right - diameter, margin, right, margin + diameter), radius,
+        radius, paint);
+    canvas.drawRect(new RectF(margin, margin, right - radius, bottom), paint);
+    canvas.drawRect(new RectF(right - radius, margin + radius, right, bottom), paint);
   }
 
   private void drawBottomLeftRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
-    canvas.drawRoundRect(new RectF(mMargin, bottom - mDiameter, mMargin + mDiameter, bottom),
-        mRadius, mRadius, paint);
-    canvas.drawRect(new RectF(mMargin, mMargin, mMargin + mDiameter, bottom - mRadius), paint);
-    canvas.drawRect(new RectF(mMargin + mRadius, mMargin, right, bottom), paint);
+    canvas.drawRoundRect(new RectF(margin, bottom - diameter, margin + diameter, bottom), radius,
+        radius, paint);
+    canvas.drawRect(new RectF(margin, margin, margin + diameter, bottom - radius), paint);
+    canvas.drawRect(new RectF(margin + radius, margin, right, bottom), paint);
   }
 
   private void drawBottomRightRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
-    canvas.drawRoundRect(new RectF(right - mDiameter, bottom - mDiameter, right, bottom), mRadius,
-        mRadius, paint);
-    canvas.drawRect(new RectF(mMargin, mMargin, right - mRadius, bottom), paint);
-    canvas.drawRect(new RectF(right - mRadius, mMargin, right, bottom - mRadius), paint);
+    canvas.drawRoundRect(new RectF(right - diameter, bottom - diameter, right, bottom), radius,
+        radius, paint);
+    canvas.drawRect(new RectF(margin, margin, right - radius, bottom), paint);
+    canvas.drawRect(new RectF(right - radius, margin, right, bottom - radius), paint);
   }
 
   private void drawTopRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
-    canvas.drawRoundRect(new RectF(mMargin, mMargin, right, mMargin + mDiameter), mRadius, mRadius,
+    canvas.drawRoundRect(new RectF(margin, margin, right, margin + diameter), radius, radius,
         paint);
-    canvas.drawRect(new RectF(mMargin, mMargin + mRadius, right, bottom), paint);
+    canvas.drawRect(new RectF(margin, margin + radius, right, bottom), paint);
   }
 
   private void drawBottomRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
-    canvas.drawRoundRect(new RectF(mMargin, bottom - mDiameter, right, bottom), mRadius, mRadius,
+    canvas.drawRoundRect(new RectF(margin, bottom - diameter, right, bottom), radius, radius,
         paint);
-    canvas.drawRect(new RectF(mMargin, mMargin, right, bottom - mRadius), paint);
+    canvas.drawRect(new RectF(margin, margin, right, bottom - radius), paint);
   }
 
   private void drawLeftRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
-    canvas.drawRoundRect(new RectF(mMargin, mMargin, mMargin + mDiameter, bottom), mRadius, mRadius,
+    canvas.drawRoundRect(new RectF(margin, margin, margin + diameter, bottom), radius, radius,
         paint);
-    canvas.drawRect(new RectF(mMargin + mRadius, mMargin, right, bottom), paint);
+    canvas.drawRect(new RectF(margin + radius, margin, right, bottom), paint);
   }
 
   private void drawRightRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
-    canvas.drawRoundRect(new RectF(right - mDiameter, mMargin, right, bottom), mRadius, mRadius,
-        paint);
-    canvas.drawRect(new RectF(mMargin, mMargin, right - mRadius, bottom), paint);
+    canvas.drawRoundRect(new RectF(right - diameter, margin, right, bottom), radius, radius, paint);
+    canvas.drawRect(new RectF(margin, margin, right - radius, bottom), paint);
   }
 
   private void drawOtherTopLeftRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
-    canvas.drawRoundRect(new RectF(mMargin, bottom - mDiameter, right, bottom), mRadius, mRadius,
+    canvas.drawRoundRect(new RectF(margin, bottom - diameter, right, bottom), radius, radius,
         paint);
-    canvas.drawRoundRect(new RectF(right - mDiameter, mMargin, right, bottom), mRadius, mRadius,
-        paint);
-    canvas.drawRect(new RectF(mMargin, mMargin, right - mRadius, bottom - mRadius), paint);
+    canvas.drawRoundRect(new RectF(right - diameter, margin, right, bottom), radius, radius, paint);
+    canvas.drawRect(new RectF(margin, margin, right - radius, bottom - radius), paint);
   }
 
   private void drawOtherTopRightRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
-    canvas.drawRoundRect(new RectF(mMargin, mMargin, mMargin + mDiameter, bottom), mRadius, mRadius,
+    canvas.drawRoundRect(new RectF(margin, margin, margin + diameter, bottom), radius, radius,
         paint);
-    canvas.drawRoundRect(new RectF(mMargin, bottom - mDiameter, right, bottom), mRadius, mRadius,
+    canvas.drawRoundRect(new RectF(margin, bottom - diameter, right, bottom), radius, radius,
         paint);
-    canvas.drawRect(new RectF(mMargin + mRadius, mMargin, right, bottom - mRadius), paint);
+    canvas.drawRect(new RectF(margin + radius, margin, right, bottom - radius), paint);
   }
 
   private void drawOtherBottomLeftRoundRect(Canvas canvas, Paint paint, float right, float bottom) {
-    canvas.drawRoundRect(new RectF(mMargin, mMargin, right, mMargin + mDiameter), mRadius, mRadius,
+    canvas.drawRoundRect(new RectF(margin, margin, right, margin + diameter), radius, radius,
         paint);
-    canvas.drawRoundRect(new RectF(right - mDiameter, mMargin, right, bottom), mRadius, mRadius,
-        paint);
-    canvas.drawRect(new RectF(mMargin, mMargin + mRadius, right - mRadius, bottom), paint);
+    canvas.drawRoundRect(new RectF(right - diameter, margin, right, bottom), radius, radius, paint);
+    canvas.drawRect(new RectF(margin, margin + radius, right - radius, bottom), paint);
   }
 
   private void drawOtherBottomRightRoundRect(Canvas canvas, Paint paint, float right,
       float bottom) {
-    canvas.drawRoundRect(new RectF(mMargin, mMargin, right, mMargin + mDiameter), mRadius, mRadius,
+    canvas.drawRoundRect(new RectF(margin, margin, right, margin + diameter), radius, radius,
         paint);
-    canvas.drawRoundRect(new RectF(mMargin, mMargin, mMargin + mDiameter, bottom), mRadius, mRadius,
+    canvas.drawRoundRect(new RectF(margin, margin, margin + diameter, bottom), radius, radius,
         paint);
-    canvas.drawRect(new RectF(mMargin + mRadius, mMargin + mRadius, right, bottom), paint);
+    canvas.drawRect(new RectF(margin + radius, margin + radius, right, bottom), paint);
   }
 
   private void drawDiagonalFromTopLeftRoundRect(Canvas canvas, Paint paint, float right,
       float bottom) {
-    canvas.drawRoundRect(new RectF(mMargin, mMargin, mMargin + mDiameter, mMargin + mDiameter),
-        mRadius, mRadius, paint);
-    canvas.drawRoundRect(new RectF(right - mDiameter, bottom - mDiameter, right, bottom), mRadius,
-        mRadius, paint);
-    canvas.drawRect(new RectF(mMargin, mMargin + mRadius, right - mDiameter, bottom), paint);
-    canvas.drawRect(new RectF(mMargin + mDiameter, mMargin, right, bottom - mRadius), paint);
+    canvas.drawRoundRect(new RectF(margin, margin, margin + diameter, margin + diameter), radius,
+        radius, paint);
+    canvas.drawRoundRect(new RectF(right - diameter, bottom - diameter, right, bottom), radius,
+        radius, paint);
+    canvas.drawRect(new RectF(margin, margin + radius, right - diameter, bottom), paint);
+    canvas.drawRect(new RectF(margin + diameter, margin, right, bottom - radius), paint);
   }
 
   private void drawDiagonalFromTopRightRoundRect(Canvas canvas, Paint paint, float right,
       float bottom) {
-    canvas.drawRoundRect(new RectF(right - mDiameter, mMargin, right, mMargin + mDiameter), mRadius,
-        mRadius, paint);
-    canvas.drawRoundRect(new RectF(mMargin, bottom - mDiameter, mMargin + mDiameter, bottom),
-        mRadius, mRadius, paint);
-    canvas.drawRect(new RectF(mMargin, mMargin, right - mRadius, bottom - mRadius), paint);
-    canvas.drawRect(new RectF(mMargin + mRadius, mMargin + mRadius, right, bottom), paint);
+    canvas.drawRoundRect(new RectF(right - diameter, margin, right, margin + diameter), radius,
+        radius, paint);
+    canvas.drawRoundRect(new RectF(margin, bottom - diameter, margin + diameter, bottom), radius,
+        radius, paint);
+    canvas.drawRect(new RectF(margin, margin, right - radius, bottom - radius), paint);
+    canvas.drawRect(new RectF(margin + radius, margin + radius, right, bottom), paint);
   }
 
-  @Override public String getId() {
-    return "RoundedTransformation(radius=" + mRadius + ", margin=" + mMargin + ", diameter="
-        + mDiameter + ", cornerType=" + mCornerType.name() + ")";
+  @Override public String toString() {
+    return "RoundedTransformation(radius=" + radius + ", margin=" + margin + ", diameter="
+        + diameter + ", cornerType=" + cornerType.name() + ")";
+  }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof RoundedCornersTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
   }
 }

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

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations.gpu;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,9 +16,7 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
-import android.content.Context;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageBrightnessFilter;
 
 /**
@@ -26,28 +24,37 @@ import jp.co.cyberagent.android.gpuimage.GPUImageBrightnessFilter;
  */
 public class BrightnessFilterTransformation extends GPUFilterTransformation {
 
-  private float mBrightness;
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.gpu.BrightnessFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
-  public BrightnessFilterTransformation(Context context) {
-    this(context, Glide.get(context).getBitmapPool());
+  private float brightness;
+
+  public BrightnessFilterTransformation() {
+    this(0.0f);
   }
 
-  public BrightnessFilterTransformation(Context context, BitmapPool pool) {
-    this(context, pool, 0.0f);
-  }
-
-  public BrightnessFilterTransformation(Context context, float brightness) {
-    this(context, Glide.get(context).getBitmapPool(), brightness);
-  }
-
-  public BrightnessFilterTransformation(Context context, BitmapPool pool, float brightness) {
-    super(context, pool, new GPUImageBrightnessFilter());
-    mBrightness = brightness;
+  public BrightnessFilterTransformation(float brightness) {
+    super(new GPUImageBrightnessFilter());
+    this.brightness = brightness;
     GPUImageBrightnessFilter filter = getFilter();
-    filter.setBrightness(mBrightness);
+    filter.setBrightness(this.brightness);
   }
 
-  @Override public String getId() {
-    return "BrightnessFilterTransformation(brightness=" + mBrightness + ")";
+  @Override public String toString() {
+    return "BrightnessFilterTransformation(brightness=" + brightness + ")";
+  }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof BrightnessFilterTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
   }
 }

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

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations.gpu;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,9 +16,7 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
-import android.content.Context;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageContrastFilter;
 
 /**
@@ -26,28 +24,37 @@ import jp.co.cyberagent.android.gpuimage.GPUImageContrastFilter;
  */
 public class ContrastFilterTransformation extends GPUFilterTransformation {
 
-  private float mContrast;
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.gpu.ContrastFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
-  public ContrastFilterTransformation(Context context) {
-    this(context, Glide.get(context).getBitmapPool());
+  private float contrast;
+
+  public ContrastFilterTransformation() {
+    this(1.0f);
   }
 
-  public ContrastFilterTransformation(Context context, BitmapPool pool) {
-    this(context, pool, 1.0f);
-  }
-
-  public ContrastFilterTransformation(Context context, float contrast) {
-    this(context, Glide.get(context).getBitmapPool(), contrast);
-  }
-
-  public ContrastFilterTransformation(Context context, BitmapPool pool, float contrast) {
-    super(context, pool, new GPUImageContrastFilter());
-    mContrast = contrast;
+  public ContrastFilterTransformation(float contrast) {
+    super(new GPUImageContrastFilter());
+    this.contrast = contrast;
     GPUImageContrastFilter filter = getFilter();
-    filter.setContrast(mContrast);
+    filter.setContrast(this.contrast);
   }
 
-  @Override public String getId() {
-    return "ContrastFilterTransformation(contrast=" + mContrast + ")";
+  @Override public String toString() {
+    return "ContrastFilterTransformation(contrast=" + contrast + ")";
+  }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof ContrastFilterTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
   }
 }

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

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations.gpu;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,48 +18,52 @@ package jp.wasabeef.glide.transformations.gpu;
 
 import android.content.Context;
 import android.graphics.Bitmap;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.Transformation;
-import com.bumptech.glide.load.engine.Resource;
+import android.support.annotation.NonNull;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
-import com.bumptech.glide.load.resource.bitmap.BitmapResource;
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImage;
 import jp.co.cyberagent.android.gpuimage.GPUImageFilter;
+import jp.wasabeef.glide.transformations.BitmapTransformation;
 
-public class GPUFilterTransformation implements Transformation<Bitmap> {
+public class GPUFilterTransformation extends BitmapTransformation {
 
-  private Context mContext;
-  private BitmapPool mBitmapPool;
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.gpu.GPUFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
-  private GPUImageFilter mFilter;
+  private GPUImageFilter gpuImageFilter;
 
-  public GPUFilterTransformation(Context context, GPUImageFilter filter) {
-    this(context, Glide.get(context).getBitmapPool(), filter);
+  public GPUFilterTransformation(GPUImageFilter filter) {
+    this.gpuImageFilter = filter;
   }
 
-  public GPUFilterTransformation(Context context, BitmapPool pool, GPUImageFilter filter) {
-    mContext = context.getApplicationContext();
-    mBitmapPool = pool;
-    mFilter = filter;
+  @Override protected Bitmap transform(@NonNull Context context, @NonNull BitmapPool pool,
+      @NonNull Bitmap toTransform, int outWidth, int outHeight) {
+    GPUImage gpuImage = new GPUImage(context);
+    gpuImage.setImage(toTransform);
+    gpuImage.setFilter(gpuImageFilter);
+
+    return gpuImage.getBitmapWithFilterApplied();
   }
 
-  @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();
-
-    return BitmapResource.obtain(bitmap, mBitmapPool);
-  }
-
-  @Override public String getId() {
+  @Override public String toString() {
     return getClass().getSimpleName();
   }
 
   @SuppressWarnings("unchecked") public <T> T getFilter() {
-    return (T) mFilter;
+    return (T) gpuImageFilter;
+  }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof GPUFilterTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
   }
 }

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

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations.gpu;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,9 +16,7 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
-import android.content.Context;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageColorInvertFilter;
 
 /**
@@ -26,15 +24,28 @@ import jp.co.cyberagent.android.gpuimage.GPUImageColorInvertFilter;
  */
 public class InvertFilterTransformation extends GPUFilterTransformation {
 
-  public InvertFilterTransformation(Context context) {
-    this(context, Glide.get(context).getBitmapPool());
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.gpu.InvertFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
+  public InvertFilterTransformation() {
+    super(new GPUImageColorInvertFilter());
   }
 
-  public InvertFilterTransformation(Context context, BitmapPool pool) {
-    super(context, pool, new GPUImageColorInvertFilter());
-  }
-
-  @Override public String getId() {
+  @Override public String toString() {
     return "InvertFilterTransformation()";
   }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof InvertFilterTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

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

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations.gpu;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,9 +16,7 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
-import android.content.Context;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageKuwaharaFilter;
 
 /**
@@ -29,28 +27,37 @@ import jp.co.cyberagent.android.gpuimage.GPUImageKuwaharaFilter;
  */
 public class KuwaharaFilterTransformation extends GPUFilterTransformation {
 
-  private int mRadius;
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.gpu.KuwaharaFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
-  public KuwaharaFilterTransformation(Context context) {
-    this(context, Glide.get(context).getBitmapPool());
+  private int radius;
+
+  public KuwaharaFilterTransformation() {
+    this(25);
   }
 
-  public KuwaharaFilterTransformation(Context context, BitmapPool pool) {
-    this(context, pool, 25);
-  }
-
-  public KuwaharaFilterTransformation(Context context, int radius) {
-    this(context, Glide.get(context).getBitmapPool(), radius);
-  }
-
-  public KuwaharaFilterTransformation(Context context, BitmapPool pool, int radius) {
-    super(context, pool, new GPUImageKuwaharaFilter());
-    mRadius = radius;
+  public KuwaharaFilterTransformation(int radius) {
+    super(new GPUImageKuwaharaFilter());
+    this.radius = radius;
     GPUImageKuwaharaFilter filter = getFilter();
-    filter.setRadius(mRadius);
+    filter.setRadius(this.radius);
   }
 
-  @Override public String getId() {
-    return "KuwaharaFilterTransformation(radius=" + mRadius + ")";
+  @Override public String toString() {
+    return "KuwaharaFilterTransformation(radius=" + radius + ")";
+  }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof KuwaharaFilterTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
   }
 }

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

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations.gpu;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,9 +16,7 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
-import android.content.Context;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImagePixelationFilter;
 
 /**
@@ -28,28 +26,37 @@ import jp.co.cyberagent.android.gpuimage.GPUImagePixelationFilter;
  */
 public class PixelationFilterTransformation extends GPUFilterTransformation {
 
-  private float mPixel;
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.gpu.PixelationFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
-  public PixelationFilterTransformation(Context context) {
-    this(context, Glide.get(context).getBitmapPool());
+  private float pixel;
+
+  public PixelationFilterTransformation() {
+    this(10f);
   }
 
-  public PixelationFilterTransformation(Context context, BitmapPool pool) {
-    this(context, pool, 10f);
-  }
-
-  public PixelationFilterTransformation(Context context, float pixel) {
-    this(context, Glide.get(context).getBitmapPool(), pixel);
-  }
-
-  public PixelationFilterTransformation(Context context, BitmapPool pool, float pixel) {
-    super(context, pool, new GPUImagePixelationFilter());
-    mPixel = pixel;
+  public PixelationFilterTransformation(float pixel) {
+    super(new GPUImagePixelationFilter());
+    this.pixel = pixel;
     GPUImagePixelationFilter filter = getFilter();
-    filter.setPixel(mPixel);
+    filter.setPixel(this.pixel);
   }
 
-  @Override public String getId() {
-    return "PixelationFilterTransformation(pixel=" + mPixel + ")";
+  @Override public String toString() {
+    return "PixelationFilterTransformation(pixel=" + pixel + ")";
+  }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof PixelationFilterTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
   }
 }

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

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations.gpu;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,9 +16,7 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
-import android.content.Context;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageSepiaFilter;
 
 /**
@@ -28,28 +26,37 @@ import jp.co.cyberagent.android.gpuimage.GPUImageSepiaFilter;
  */
 public class SepiaFilterTransformation extends GPUFilterTransformation {
 
-  private float mIntensity;
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.gpu.SepiaFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
-  public SepiaFilterTransformation(Context context) {
-    this(context, Glide.get(context).getBitmapPool());
+  private float intensity;
+
+  public SepiaFilterTransformation() {
+    this(1.0f);
   }
 
-  public SepiaFilterTransformation(Context context, BitmapPool pool) {
-    this(context, pool, 1.0f);
-  }
-
-  public SepiaFilterTransformation(Context context, float intensity) {
-    this(context, Glide.get(context).getBitmapPool(), intensity);
-  }
-
-  public SepiaFilterTransformation(Context context, BitmapPool pool, float intensity) {
-    super(context, pool, new GPUImageSepiaFilter());
-    mIntensity = intensity;
+  public SepiaFilterTransformation(float intensity) {
+    super(new GPUImageSepiaFilter());
+    this.intensity = intensity;
     GPUImageSepiaFilter filter = getFilter();
-    filter.setIntensity(mIntensity);
+    filter.setIntensity(this.intensity);
   }
 
-  @Override public String getId() {
-    return "SepiaFilterTransformation(intensity=" + mIntensity + ")";
+  @Override public String toString() {
+    return "SepiaFilterTransformation(intensity=" + intensity + ")";
+  }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof SepiaFilterTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
   }
 }

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

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations.gpu;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,22 +16,33 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
-import android.content.Context;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageSketchFilter;
 
 public class SketchFilterTransformation extends GPUFilterTransformation {
 
-  public SketchFilterTransformation(Context context) {
-    this(context, Glide.get(context).getBitmapPool());
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.gpu.SketchFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
+
+  public SketchFilterTransformation() {
+    super(new GPUImageSketchFilter());
   }
 
-  public SketchFilterTransformation(Context context, BitmapPool pool) {
-    super(context, pool, new GPUImageSketchFilter());
-  }
-
-  @Override public String getId() {
+  @Override public String toString() {
     return "SketchFilterTransformation()";
   }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof SketchFilterTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
+  }
 }

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

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations.gpu;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,10 +16,8 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
-import android.content.Context;
 import android.graphics.PointF;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageSwirlFilter;
 
 /**
@@ -27,20 +25,17 @@ import jp.co.cyberagent.android.gpuimage.GPUImageSwirlFilter;
  */
 public class SwirlFilterTransformation extends GPUFilterTransformation {
 
-  private float mRadius;
-  private float mAngle;
-  private PointF mCenter;
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.gpu.SwirlFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
-  public SwirlFilterTransformation(Context context) {
-    this(context, Glide.get(context).getBitmapPool());
-  }
+  private float radius;
+  private float angle;
+  private PointF center;
 
-  public SwirlFilterTransformation(Context context, BitmapPool pool) {
-    this(context, pool, .5f, 1.0f, new PointF(0.5f, 0.5f));
-  }
-
-  public SwirlFilterTransformation(Context context, float radius, float angle, PointF center) {
-    this(context, Glide.get(context).getBitmapPool(), radius, angle, center);
+  public SwirlFilterTransformation() {
+    this(.5f, 1.0f, new PointF(0.5f, 0.5f));
   }
 
   /**
@@ -48,20 +43,31 @@ public class SwirlFilterTransformation extends GPUFilterTransformation {
    * @param angle minimum 0.0, default 1.0
    * @param center default (0.5, 0.5)
    */
-  public SwirlFilterTransformation(Context context, BitmapPool pool, float radius, float angle,
-      PointF center) {
-    super(context, pool, new GPUImageSwirlFilter());
-    mRadius = radius;
-    mAngle = angle;
-    mCenter = center;
+  public SwirlFilterTransformation(float radius, float angle, PointF center) {
+    super(new GPUImageSwirlFilter());
+    this.radius = radius;
+    this.angle = angle;
+    this.center = center;
     GPUImageSwirlFilter filter = getFilter();
-    filter.setRadius(mRadius);
-    filter.setAngle(mAngle);
-    filter.setCenter(mCenter);
+    filter.setRadius(this.radius);
+    filter.setAngle(this.angle);
+    filter.setCenter(this.center);
   }
 
-  @Override public String getId() {
-    return "SwirlFilterTransformation(radius=" + mRadius +
-        ",angle=" + mAngle + ",center=" + mCenter.toString() + ")";
+  @Override public String toString() {
+    return "SwirlFilterTransformation(radius=" + radius + ",angle=" + angle + ",center="
+        + center.toString() + ")";
+  }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof SwirlFilterTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
   }
 }

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

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations.gpu;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,9 +16,7 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
-import android.content.Context;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 import jp.co.cyberagent.android.gpuimage.GPUImageToonFilter;
 
 /**
@@ -28,33 +26,41 @@ import jp.co.cyberagent.android.gpuimage.GPUImageToonFilter;
  */
 public class ToonFilterTransformation extends GPUFilterTransformation {
 
-  private float mThreshold;
-  private float mQuantizationLevels;
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.gpu.ToonFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
-  public ToonFilterTransformation(Context context) {
-    this(context, Glide.get(context).getBitmapPool());
+  private float threshold;
+  private float quantizationLevels;
+
+  public ToonFilterTransformation() {
+    this(.2f, 10.0f);
   }
 
-  public ToonFilterTransformation(Context context, BitmapPool pool) {
-    this(context, pool, .2f, 10.0f);
-  }
-
-  public ToonFilterTransformation(Context context, float threshold, float quantizationLevels) {
-    this(context, Glide.get(context).getBitmapPool(), threshold, quantizationLevels);
-  }
-
-  public ToonFilterTransformation(Context context, BitmapPool pool, float threshold,
-      float quantizationLevels) {
-    super(context, pool, new GPUImageToonFilter());
-    mThreshold = threshold;
-    mQuantizationLevels = quantizationLevels;
+  public ToonFilterTransformation(float threshold, float quantizationLevels) {
+    super(new GPUImageToonFilter());
+    this.threshold = threshold;
+    this.quantizationLevels = quantizationLevels;
     GPUImageToonFilter filter = getFilter();
-    filter.setThreshold(mThreshold);
-    filter.setQuantizationLevels(mQuantizationLevels);
+    filter.setThreshold(this.threshold);
+    filter.setQuantizationLevels(this.quantizationLevels);
   }
 
-  @Override public String getId() {
-    return "ToonFilterTransformation(threshold=" + mThreshold +
-        ",quantizationLevels=" + mQuantizationLevels + ")";
+  @Override public String toString() {
+    return "ToonFilterTransformation(threshold=" + threshold + ",quantizationLevels="
+        + quantizationLevels + ")";
+  }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof ToonFilterTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
   }
 }

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

@@ -1,7 +1,7 @@
 package jp.wasabeef.glide.transformations.gpu;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,10 +16,8 @@ package jp.wasabeef.glide.transformations.gpu;
  * limitations under the License.
  */
 
-import android.content.Context;
 import android.graphics.PointF;
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import java.security.MessageDigest;
 import java.util.Arrays;
 import jp.co.cyberagent.android.gpuimage.GPUImageVignetteFilter;
 
@@ -30,41 +28,47 @@ import jp.co.cyberagent.android.gpuimage.GPUImageVignetteFilter;
  */
 public class VignetteFilterTransformation extends GPUFilterTransformation {
 
-  private PointF mCenter;
-  private float[] mVignetteColor;
-  private float mVignetteStart;
-  private float mVignetteEnd;
+  private static final int VERSION = 1;
+  private static final String ID =
+      "jp.wasabeef.glide.transformations.gpu.VignetteFilterTransformation." + VERSION;
+  private static final byte[] ID_BYTES = ID.getBytes(CHARSET);
 
-  public VignetteFilterTransformation(Context context) {
-    this(context, Glide.get(context).getBitmapPool());
+  private PointF center;
+  private float[] vignetteColor;
+  private float vignetteStart;
+  private float vignetteEnd;
+
+  public VignetteFilterTransformation() {
+    this(new PointF(0.5f, 0.5f), new float[] { 0.0f, 0.0f, 0.0f }, 0.0f, 0.75f);
   }
 
-  public VignetteFilterTransformation(Context context, BitmapPool pool) {
-    this(context, pool, new PointF(0.5f, 0.5f), new float[] { 0.0f, 0.0f, 0.0f }, 0.0f, 0.75f);
-  }
-
-  public VignetteFilterTransformation(Context context, PointF center, float[] color, float start,
-      float end) {
-    this(context, Glide.get(context).getBitmapPool(), center, color, start, end);
-  }
-
-  public VignetteFilterTransformation(Context context, BitmapPool pool, PointF center,
-      float[] color, float start, float end) {
-    super(context, pool, new GPUImageVignetteFilter());
-    mCenter = center;
-    mVignetteColor = color;
-    mVignetteStart = start;
-    mVignetteEnd = end;
+  public VignetteFilterTransformation(PointF center, float[] color, float start, float end) {
+    super(new GPUImageVignetteFilter());
+    this.center = center;
+    vignetteColor = color;
+    vignetteStart = start;
+    vignetteEnd = end;
     GPUImageVignetteFilter filter = getFilter();
-    filter.setVignetteCenter(mCenter);
-    filter.setVignetteColor(mVignetteColor);
-    filter.setVignetteStart(mVignetteStart);
-    filter.setVignetteEnd(mVignetteEnd);
+    filter.setVignetteCenter(this.center);
+    filter.setVignetteColor(vignetteColor);
+    filter.setVignetteStart(vignetteStart);
+    filter.setVignetteEnd(vignetteEnd);
   }
 
-  @Override public String getId() {
-    return "VignetteFilterTransformation(center=" + mCenter.toString() +
-        ",color=" + Arrays.toString(mVignetteColor) +
-        ",start=" + mVignetteStart + ",end=" + mVignetteEnd + ")";
+  @Override public String toString() {
+    return "VignetteFilterTransformation(center=" + center.toString() + ",color=" + Arrays.toString(
+        vignetteColor) + ",start=" + vignetteStart + ",end=" + vignetteEnd + ")";
+  }
+
+  @Override public boolean equals(Object o) {
+    return o instanceof VignetteFilterTransformation;
+  }
+
+  @Override public int hashCode() {
+    return ID.hashCode();
+  }
+
+  @Override public void updateDiskCacheKey(MessageDigest messageDigest) {
+    messageDigest.update(ID_BYTES);
   }
 }

transformations/src/main/java/jp/wasabeef/glide/transformations/internal/FastBlur.java

@@ -3,7 +3,7 @@ package jp.wasabeef.glide.transformations.internal;
 import android.graphics.Bitmap;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,7 +20,7 @@ import android.graphics.Bitmap;
 
 public class FastBlur {
 
-  public static Bitmap doBlur(Bitmap sentBitmap, int radius, boolean canReuseInBitmap) {
+  public static Bitmap blur(Bitmap sentBitmap, int radius, boolean canReuseInBitmap) {
 
     // Stack Blur v1.0 from
     // http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html

transformations/src/main/java/jp/wasabeef/glide/transformations/internal/RSBlur.java

@@ -0,0 +1,70 @@
+package jp.wasabeef.glide.transformations.internal;
+
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.os.Build;
+import android.renderscript.Allocation;
+import android.renderscript.Element;
+import android.renderscript.RSRuntimeException;
+import android.renderscript.RenderScript;
+import android.renderscript.ScriptIntrinsicBlur;
+
+/**
+ * Copyright (C) 2018 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.
+ */
+
+public class RSBlur {
+
+  @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
+  public static Bitmap blur(Context context, Bitmap bitmap, int radius) throws RSRuntimeException {
+    RenderScript rs = null;
+    Allocation input = null;
+    Allocation output = null;
+    ScriptIntrinsicBlur blur = null;
+    try {
+      rs = RenderScript.create(context);
+      rs.setMessageHandler(new RenderScript.RSMessageHandler());
+      input = Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_NONE,
+          Allocation.USAGE_SCRIPT);
+      output = Allocation.createTyped(rs, input.getType());
+      blur = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
+
+      blur.setInput(input);
+      blur.setRadius(radius);
+      blur.forEach(output);
+      output.copyTo(bitmap);
+    } finally {
+      if (rs != null) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+          RenderScript.releaseAllContexts();
+        } else {
+          rs.destroy();
+        }
+      }
+      if (input != null) {
+        input.destroy();
+      }
+      if (output != null) {
+        output.destroy();
+      }
+      if (blur != null) {
+        blur.destroy();
+      }
+    }
+
+    return bitmap;
+  }
+}

transformations/src/main/java/jp/wasabeef/glide/transformations/internal/Utils.java

@@ -5,7 +5,7 @@ import android.graphics.drawable.Drawable;
 import android.os.Build;
 
 /**
- * Copyright (C) 2015 Wasabeef
+ * Copyright (C) 2018 Wasabeef
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.