BALUSANGEM

class MainActivity : AppCompatActivity() {

    val TAG = MainActivity::class.java.simpleName
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val handler = Handler(Looper.getMainLooper())
        Log.d(TAG, "Before post delayed:${System.currentTimeMillis()}")
        handler.postDelayed(
            {

BALUSANGEM

 val source = ImageDecoder.createSource(assets, "image.jpg")
        val listener = ImageDecoder.OnHeaderDecodedListener { decoder, info, src ->
             decoder.setPostProcessor { canvas ->
                 // This will create rounded corners.
                 val path = Path()
                 path.fillType = Path.FillType.INVERSE_EVEN_ODD
                 val width = canvas.width
                 val height = canvas.height
                 path.addRoundRect(0f, 0f, width.toFloat(), height.toFloat(), width / 2.toFloat(), height / 2.toFloat(), Path.Direction.CW)
                 val paint = Paint()

BALUSANGEM

val listener = ImageDecoder.OnHeaderDecodedListener { decoder, imageinfo, source ->
            decoder.setTargetSize(100, 100)
            //you can use setTargetSampleSize(2) to create a image with half of original height and width
        }
val drawable = ImageDecoder.decodeDrawable(source, listener);

BALUSANGEM

public class HelloArActivity extends AppCompatActivity implements GLSurfaceView.Renderer {
    private static final String TAG = HelloArActivity.class.getSimpleName();

    // Rendering. The Renderers are created here, and initialized when the GL surface is created.
    private GLSurfaceView surfaceView;

    private boolean installRequested;

    private final VideoRenderer videoRenderer = new VideoRenderer();

BALUSANGEM

public class VideoRenderer implements SurfaceTexture.OnFrameAvailableListener {
    private SurfaceTexture videoTexture;
    private int mTextureId;
    private static final int TEXCOORDS_PER_VERTEX = 2;
    private static final int COORDS_PER_VERTEX = 3;


    private String TAG = VideoRenderer.class.getSimpleName();
    private int mQuadProgram;
    private final Object lock = new Object();

BALUSANGEM

public void draw(float[] cameraView, float[] cameraPerspective) {
        if (done || !prepared) {
            return;
        }
        synchronized (this) {
            if (frameAvailable) {
                videoTexture.updateTexImage();
                frameAvailable = false;

                if (videoTexture != null) {

BALUSANGEM

 public void update(float[] modelMatrix) {
        float[] scaleMatrix = new float[16];
        Matrix.setIdentityM(scaleMatrix, 0);
        float SCALE_FACTOR = 1f;
        scaleMatrix[0] = SCALE_FACTOR;
        scaleMatrix[5] = SCALE_FACTOR;
        scaleMatrix[10] = SCALE_FACTOR;
        Matrix.multiplyMM(this.mModelMatrix, 0, modelMatrix, 0, scaleMatrix, 0);
    }

BALUSANGEM

public void createOnGlThread() {

        // 1 texture to hold the video frame.
        int textures[] = new int[1];
        GLES20.glGenTextures(1, textures, 0);
        mTextureId = textures[0];
        int mTextureTarget = GLES11Ext.GL_TEXTURE_EXTERNAL_OES;
        GLES20.glBindTexture(mTextureTarget, mTextureId);

        GLES20.glTexParameteri(mTextureTarget, GLES20.GL_TEXTURE_MIN_FILTER,

BALUSANGEM

class LoginActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_login)
        goto_main_screen_button.setOnClickListener {
            gotoMainScreen()
        }
    }

    private fun gotoMainScreen() {

BALUSANGEM

open class BaseGhattCallback : BluetoothGattCallback() {
    var mIsDeviceConnected = false
    internal var mCommandCharacteristic: BluetoothGattCharacteristic? = null
    open val TAG = BaseGhattCallback::class.java.simpleName

    private val SUBSCRIBE_CHARACTERISTIC: Int = 0
    private val READ_CHARACTERISTIC: Int = 1
    private val WRITE_CHARACTERISTIC: Int = 2

    fun queueReadDataFromCharacteristic(gatt: BluetoothGatt, characteristic: BluetoothGattCharacteristic) {