Put the compute samples back in the SDK.

Change-Id: Idda5b632750e52eecf3a16205a0ff14af17b2e1b

samples/RenderScript/HelloCompute/Android.mk

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+#
+# 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.
+#
+
+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 := RsHelloCompute
+
+include $(BUILD_PACKAGE)

samples/RenderScript/HelloCompute/AndroidManifest.xml

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+<?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.example.android.rs.hellocompute">
+
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />    
+    <uses-sdk android:minSdkVersion="14" />
+    <application android:label="RsHelloCompute">
+        <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>

samples/RenderScript/HelloCompute/_index.html

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+<p>A Renderscript compute sample that filters a bitmap. No Renderscript graphics APIs are used
+in this sample.</p>

samples/RenderScript/HelloCompute/res/layout/main.xml

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+<?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>

samples/RenderScript/HelloCompute/src/com/example/android/rs/hellocompute/HelloCompute.java

@@ -0,0 +1,74 @@
+/*
+ * 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.example.android.rs.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.forEach_root(mInAllocation, mOutAllocation);
+        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);
+    }
+}

samples/RenderScript/HelloCompute/src/com/example/android/rs/hellocompute/mono.rs

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+/*
+ * 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.
+ */
+
+#pragma version(1)
+#pragma rs java_package_name(com.example.android.rs.hellocompute)
+
+const static float3 gMonoMult = {0.299f, 0.587f, 0.114f};
+
+void root(const uchar4 *v_in, uchar4 *v_out) {
+    float4 f4 = rsUnpackColor8888(*v_in);
+
+    float3 mono = dot(f4.rgb, gMonoMult);
+    *v_out = rsPackColorTo8888(mono);
+}
+