Bitmap and RenderScript : Bitmap « 2D Graphics « Android

1. Android
2. 2D Graphics
3. Bitmap

Bitmap and RenderScript

    
//
//src\com\example\android\rs\hellocompute\HelloCompute.java
/*
 * 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.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);
    }
}



//src\com\example\android\rs\hellocompute\mono.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.
 */

#pragma version(1)
#pragma rs java_package_name(com.example.android.rs.hellocompute)

rs_allocation gIn;
rs_allocation gOut;
rs_script gScript;

const static float3 gMonoMult = {0.299f, 0.587f, 0.114f};

void root(const uchar4 *v_in, uchar4 *v_out, const void *usrData, uint32_t x, uint32_t y) {
    float4 f4 = rsUnpackColor8888(*v_in);

    float3 mono = dot(f4.rgb, gMonoMult);
    *v_out = rsPackColorTo8888(mono);
}

void filter() {
    rsForEach(gScript, gIn, gOut, 0);
}




//
//res\layout\main.xml
<?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>

   
    
    
    
  

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