Basic 101 level compute example for RS.

#

# Copyright (C) 2011 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.

#

ifneq ($(TARGET_SIMULATOR),true)

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE_TAGS := optional

LOCAL_SRC_FILES := $(call all-java-files-under, src) \

                   $(call all-renderscript-files-under, src)

LOCAL_PACKAGE_NAME := HelloCompute

include $(BUILD_PACKAGE)

endif

<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright (C) 2011 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 xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.android.example.hellocompute">

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />    

    <uses-sdk android:minSdkVersion="11" />

    <application android:label="HelloCompute">

        <activity android:name="HelloCompute">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>

<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright (C) 2011 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.

-->

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

        android:layout_width="match_parent"

        android:layout_height="match_parent">

    <ImageView

        android:id="@+id/displayin"

        android:layout_width="320dip"

        android:layout_height="266dip" />

    <ImageView

        android:id="@+id/displayout"

        android:layout_width="320dip"

        android:layout_height="266dip" />

</LinearLayout>

/*

 * Copyright (C) 2011 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.android.example.hellocompute;

import android.app.Activity;

import android.os.Bundle;

import android.graphics.BitmapFactory;

import android.graphics.Bitmap;

import android.renderscript.RenderScript;

import android.renderscript.Allocation;

import android.widget.ImageView;

public class HelloCompute extends Activity {

    private Bitmap mBitmapIn;

    private Bitmap mBitmapOut;

    private RenderScript mRS;

    private Allocation mInAllocation;

    private Allocation mOutAllocation;

    private ScriptC_mono mScript;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        mBitmapIn = loadBitmap(R.drawable.data);

        mBitmapOut = Bitmap.createBitmap(mBitmapIn.getWidth(), mBitmapIn.getHeight(),

                                         mBitmapIn.getConfig());

        ImageView in = (ImageView) findViewById(R.id.displayin);

        in.setImageBitmap(mBitmapIn);

        ImageView out = (ImageView) findViewById(R.id.displayout);

        out.setImageBitmap(mBitmapOut);

        createScript();

    }

    private void createScript() {

        mRS = RenderScript.create(this);

        mInAllocation = Allocation.createFromBitmap(mRS, mBitmapIn,

                                                    Allocation.MipmapControl.MIPMAP_NONE,

                                                    Allocation.USAGE_SCRIPT);

        mOutAllocation = Allocation.createTyped(mRS, mInAllocation.getType());

        mScript = new ScriptC_mono(mRS, getResources(), R.raw.mono);

        mScript.set_gIn(mInAllocation);

        mScript.set_gOut(mOutAllocation);

        mScript.set_gScript(mScript);

        mScript.invoke_filter();

        mOutAllocation.copyTo(mBitmapOut);

    }

    private Bitmap loadBitmap(int resource) {

        final BitmapFactory.Options options = new BitmapFactory.Options();

        options.inPreferredConfig = Bitmap.Config.ARGB_8888;

        return BitmapFactory.decodeResource(getResources(), resource, options);

    }

}