/*
* Copyright (C) 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.
*/

package com.android.rs.waitattachdebug;

import android.app.Activity;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.widget.ImageView;
import android.renderscript.*;

public class MainActivity extends Activity {
    private Bitmap mBitmapIn;
    private Bitmap mBitmapOut;
    private ImageView mImageView;

    private RenderScript mRS;
    private Allocation mInAllocation;
    private Allocation mOutAllocation;
    private ScriptC_simple mScript;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.main_layout);

        mBitmapIn = Bitmap.createBitmap(8, 8, Bitmap.Config.ARGB_8888);
        mBitmapOut = Bitmap.createBitmap(mBitmapIn.getWidth(),
                    mBitmapIn.getHeight(), mBitmapIn.getConfig());

        mImageView = findViewById(R.id.imageView);
        mImageView.setImageBitmap(mBitmapOut);

        createScript();
        updateImage(1.0f);
    }

    private void createScript() {
        mRS = RenderScript.create(this,
            RenderScript.ContextType.NORMAL,
            RenderScript.CREATE_FLAG_LOW_LATENCY |
            RenderScript.CREATE_FLAG_WAIT_FOR_ATTACH);

        mInAllocation = Allocation.createFromBitmap(mRS, mBitmapIn);
        mOutAllocation = Allocation.createFromBitmap(mRS, mBitmapOut);

        mScript = new ScriptC_simple(mRS);
    }


    private void updateImage(final float f) {
        mScript.set_gColor(new Float4(0.9f, 0.8f, 0.5f, 1.0f));
        mScript.forEach_simple_kernel(mInAllocation, mOutAllocation);
        mOutAllocation.copyTo(mBitmapOut);
        mScript.forEach_other_kernel(mInAllocation, mOutAllocation);
    }
}