package org.opencv.samples.tutorial3;

import android.content.Context;

import android.graphics.Bitmap;

class Sample3View extends SampleViewBase {

        private int mFrameSize;

        private Bitmap mBitmap;

        private int[] mRGBA;

    public Sample3View(Context context) {

        super(context);

    }

        @Override

        protected void onPreviewStared(int previewWidtd, int previewHeight) {

                mFrameSize = previewWidtd * previewHeight;

                mRGBA = new int[mFrameSize];

                mBitmap = Bitmap.createBitmap(previewWidtd, previewHeight, Bitmap.Config.ARGB_8888);

        }

        @Override

        protected void onPreviewStopped() {

                if(mBitmap != null) {

                        mBitmap.recycle();

                        mBitmap = null;

                }

                mRGBA = null;

        }

    @Override

    protected Bitmap processFrame(byte[] data) {

        int[] rgba = mRGBA;

        FindFeatures(getFrameWidth(), getFrameHeight(), data, rgba);

        Bitmap bmp = mBitmap; 

        bmp.setPixels(rgba, 0/* offset */, getFrameWidth() /* stride */, 0, 0, getFrameWidth(), getFrameHeight());

        return bmp;

    }

    public native void FindFeatures(int width, int height, byte yuv[], int[] rgba);

    static {

            System.loadLibrary("opencv_java");

        System.loadLibrary("native_sample");

    }

}