ashwin-sp

public class CameraHandler {
    private static final String TAG = CameraHandler.class.getSimpleName();

    public static final int IMAGE_WIDTH = 640;
    public static final int IMAGE_HEIGHT = 480;

    private static final int MAX_IMAGES = 1;
    private CameraDevice mCameraDevice;
    private CameraCaptureSession mCaptureSession;
    /**

ashwin-sp

public class ImagePreprocessor {
    private static final boolean SAVE_PREVIEW_BITMAP = false;

    private Bitmap rgbFrameBitmap;
    private Bitmap croppedBitmap;

    public ImagePreprocessor() {
        this.croppedBitmap = Bitmap.createBitmap(224, 224,
                Bitmap.Config.ARGB_8888);
        this.rgbFrameBitmap = Bitmap.createBitmap(CameraHandler.IMAGE_WIDTH,

ashwin-sp

/**
* Begin a still image capture
*/

fun takePicture() {
        if (cameraDevice ==
                null) {
            Log.w(TAG, "Cannot capture image. Camera not initialized.")
            return
        }

ashwin-sp

/**
 * Execute a new capture request within the active session
 */

private fun triggerImageCapture() {
    try {
        val captureBuilder = cameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE)
        captureBuilder.addTarget(imageReader.getSurface())
        captureBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON)

ashwin-sp

<intent-filter>
    <action android:name="android.intent.action.MAIN"/>
    <category android:name="android.intent.category.IOT_LAUNCHER"/>
    <category android:name="android.intent.category.DEFAULT"/>
</intent-filter>

ashwin-sp

imagePreprocessor = ImagePreprocessor()
cameraHandler = CameraHandler.getInstance() as CameraHandler
cameraHandler!!.initializeCamera(
            this@ActivityClass, backgroundHandler,
            this@ActivityClass)

ashwin-sp

override fun onImageAvailable(reader: ImageReader?) {
    lateinit var bitmap: Bitmap
    reader?.acquireNextImage().use 
    { 
       image -> bitmap = imagePreprocessor?.preprocessImage(image)!! 
    }
    runOnUiThread 
    { 
       imageView.setImageBitmap(bitmap) 
    }

ashwin-sp

data class Student(var name: String, var regNo: Long, var gender: String, var address: String, var phNo: Long)

/** Equivalent Java reference 

Student std1 = new Student("Ashwin", 111712104013L, "Male", "Chennai", 4353453453L )

**/

ashwin-sp

object Test {
    internal fun demoMethod() {
        println("demoMethod for singleton")
    }
}

/** Equivalent Java Reference 

Test.INSTANCE.demoMethod();

ashwin-sp

class Test
{
    companion object {
        val num: Int = 1 
        fun call()
        {
            println("Calling companion")
        }
    }
}