Adds BasicRenderScript sample.

Change-Id: Ib4b5c2e7e6c3e73a70698ff37d87b462f6651b95

BasicRenderScript/.google/packaging.yaml

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+
+# GOOGLE SAMPLE PACKAGING DATA
+#
+# This file is used by Google as part of our samples packaging process.
+# End users may safely ignore this file. It has no relevance to other systems.
+---
+status:       PUBLISHED
+technologies: [Android]
+categories:   [RenderScript]
+languages:    [Java]
+solutions:    [Mobile]
+github:       android/renderscript
+level:        EXPERT
+icon:         screenshots/icon-web.png
+apiRefs:
+    - android:android.renderscript.RenderScript
+    - android:android.renderscript.Allocation
+license: apache2

BasicRenderScript/Application/build.gradle

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+
+buildscript {
+    repositories {
+        google()
+        jcenter()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.4.2'
+    }
+}
+
+apply plugin: 'com.android.application'
+
+repositories {
+    google()
+    jcenter()
+}
+
+dependencies {
+
+
+        implementation "com.android.support:support-v4:28.0.0"
+        implementation "com.android.support:support-v13:28.0.0"
+        implementation "com.android.support:cardview-v7:28.0.0"
+        implementation "com.android.support:appcompat-v7:28.0.0"
+
+
+
+
+
+
+}
+
+// The sample build uses multiple directories to
+// keep boilerplate and common code separate from
+// the main sample code.
+List<String> dirs = [
+    'main',     // main sample code; look here for the interesting stuff.
+    'common',   // components that are reused by multiple samples
+    'template'] // boilerplate code that is generated by the sample template process
+
+android {
+    compileSdkVersion 28
+
+    defaultConfig {
+        minSdkVersion 14
+        targetSdkVersion 28
+
+            renderscriptTargetApi 24
+            renderscriptSupportModeEnabled true
+
+    }
+
+}

BasicRenderScript/Application/project.properties

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+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must be checked in Version Control Systems.
+#
+# To customize properties used by the Ant build system edit
+# "ant.properties", and override values to adapt the script to your
+# project structure.
+#
+# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
+#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
+
+# Project target.
+target=android-19
+renderscript.support.mode=true

BasicRenderScript/Application/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2014 The Android Open Source Project
+
+ 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.
+-->
+<manifest package="com.example.android.basicrenderscript"
+          xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!-- Min/target SDK versions (<uses-sdk>) managed by build.gradle -->
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/Theme.BasicRenderScript">
+        <activity
+            android:name=".MainActivity"
+            android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

BasicRenderScript/Application/src/main/java/com/example/android/basicrenderscript/MainActivity.java

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+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * 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.
+ */
+
+package com.example.android.basicrenderscript;
+
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v8.renderscript.Allocation;
+import android.support.v8.renderscript.RenderScript;
+import android.widget.ImageView;
+import android.widget.SeekBar;
+import android.widget.SeekBar.OnSeekBarChangeListener;
+
+public class MainActivity extends AppCompatActivity {
+
+    /**
+     * Number of bitmaps that is used for RenderScript thread and UI thread synchronization.
+     */
+    private final int NUM_BITMAPS = 2;
+    private int mCurrentBitmap = 0;
+    private Bitmap mBitmapIn;
+    private Bitmap[] mBitmapsOut;
+    private ImageView mImageView;
+
+    private Allocation mInAllocation;
+    private Allocation[] mOutAllocations;
+    private ScriptC_saturation mScript;
+    private RenderScriptTask mCurrentTask;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.main_layout);
+
+        // Initialize UI
+        mBitmapIn = loadBitmap(R.drawable.data);
+        mBitmapsOut = new Bitmap[NUM_BITMAPS];
+        for (int i = 0; i < NUM_BITMAPS; ++i) {
+            mBitmapsOut[i] = Bitmap.createBitmap(mBitmapIn.getWidth(),
+                    mBitmapIn.getHeight(), mBitmapIn.getConfig());
+        }
+
+        mImageView = (ImageView) findViewById(R.id.imageView);
+        mImageView.setImageBitmap(mBitmapsOut[mCurrentBitmap]);
+        mCurrentBitmap += (mCurrentBitmap + 1) % NUM_BITMAPS;
+
+        SeekBar seekbar = (SeekBar) findViewById(R.id.seekBar1);
+        seekbar.setProgress(50);
+        seekbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
+            public void onProgressChanged(SeekBar seekBar, int progress,
+                                          boolean fromUser) {
+                float max = 2.0f;
+                float min = 0.0f;
+                float f = (float) ((max - min) * (progress / 100.0) + min);
+                updateImage(f);
+            }
+
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {
+            }
+        });
+
+        // Create renderScript
+        createScript();
+
+        // Invoke renderScript kernel and update imageView
+        updateImage(1.0f);
+    }
+
+    /**
+     * Initialize RenderScript.
+     *
+     * <p>In the sample, it creates RenderScript kernel that performs saturation manipulation.</p>
+     */
+    private void createScript() {
+        // Initialize RS
+        RenderScript rs = RenderScript.create(this);
+
+        // Allocate buffers
+        mInAllocation = Allocation.createFromBitmap(rs, mBitmapIn);
+        mOutAllocations = new Allocation[NUM_BITMAPS];
+        for (int i = 0; i < NUM_BITMAPS; ++i) {
+            mOutAllocations[i] = Allocation.createFromBitmap(rs, mBitmapsOut[i]);
+        }
+
+        // Load script
+        mScript = new ScriptC_saturation(rs);
+    }
+
+    /*
+     * In the AsyncTask, it invokes RenderScript intrinsics to do a filtering.
+     * After the filtering is done, an operation blocks at Allocation.copyTo() in AsyncTask thread.
+     * Once all operation is finished at onPostExecute() in UI thread, it can invalidate and update
+     * ImageView UI.
+     */
+    private class RenderScriptTask extends AsyncTask<Float, Void, Integer> {
+        Boolean issued = false;
+
+        protected Integer doInBackground(Float... values) {
+            int index = -1;
+            if (!isCancelled()) {
+                issued = true;
+                index = mCurrentBitmap;
+
+                // Set global variable in RS
+                mScript.set_saturationValue(values[0]);
+
+                // Invoke saturation filter kernel
+                mScript.forEach_saturation(mInAllocation, mOutAllocations[index]);
+
+                // Copy to bitmap and invalidate image view
+                mOutAllocations[index].copyTo(mBitmapsOut[index]);
+                mCurrentBitmap = (mCurrentBitmap + 1) % NUM_BITMAPS;
+            }
+            return index;
+        }
+
+        void updateView(Integer result) {
+            if (result != -1) {
+                // Request UI update
+                mImageView.setImageBitmap(mBitmapsOut[result]);
+                mImageView.invalidate();
+            }
+        }
+
+        protected void onPostExecute(Integer result) {
+            updateView(result);
+        }
+
+        protected void onCancelled(Integer result) {
+            if (issued) {
+                updateView(result);
+            }
+        }
+    }
+
+    /**
+     * Invoke AsyncTask and cancel previous task. When AsyncTasks are piled up (typically in slow
+     * device with heavy kernel), Only the latest (and already started) task invokes RenderScript
+     * operation.
+     */
+    private void updateImage(final float f) {
+        if (mCurrentTask != null) {
+            mCurrentTask.cancel(false);
+        }
+        mCurrentTask = new RenderScriptTask();
+        mCurrentTask.execute(f);
+    }
+
+    /**
+     * Helper to load Bitmap from resource
+     */
+    private Bitmap loadBitmap(int resource) {
+        final BitmapFactory.Options options = new BitmapFactory.Options();
+        options.inPreferredConfig = Bitmap.Config.ARGB_8888;
+        return BitmapFactory.decodeResource(getResources(), resource, options);
+    }
+
+}

BasicRenderScript/Application/src/main/res/layout/main_layout.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright 2016 The Android Open Source Project
+
+ 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.
+-->
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <ImageView
+        android:id="@+id/imageView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:contentDescription="@null"
+        android:scaleType="fitCenter"
+        android:src="@drawable/data"/>
+
+    <SeekBar
+        android:id="@+id/seekBar1"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom"
+        android:layout_marginBottom="16dp"/>
+
+</FrameLayout>

BasicRenderScript/Application/src/main/res/values-sw600dp/template-dimens.xml

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+<!--
+  Copyright 2013 The Android Open Source Project
+
+  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.
+  -->
+
+<resources>
+
+    <!-- Semantic definitions -->
+
+    <dimen name="horizontal_page_margin">@dimen/margin_huge</dimen>
+    <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>