opencv.kt

import org.opencv.core.Core
import org.opencv.core.Mat
import org.opencv.core.MatOfByte
import org.opencv.core.Size
import org.opencv.imgcodecs.Imgcodecs
import org.opencv.imgproc.Imgproc
import org.opencv.videoio.VideoCapture
import java.awt.Dimension
import java.awt.FlowLayout
import java.io.ByteArrayInputStream
import java.io.InputStream
import javax.imageio.ImageIO
import javax.swing.ImageIcon
import javax.swing.JFrame
import javax.swing.JLabel

fun main(args: Array<String>) {
    System.load("/usr/local/Cellar/opencv/4.0.1/share/java/opencv4/libopencv_java401.dylib")

    val capture = VideoCapture()
    capture.open("rtsp://admin:Joannasia1993!@192.168.1.64:554")
    val mat = Mat()
    val label = JLabel()

    val frame = JFrame()
    frame.preferredSize = Dimension(1024, 768)
    frame.contentPane.layout = FlowLayout()
    frame.contentPane.add(label)
    frame.pack()
    frame.isVisible = true

    while (capture.read(mat)) {
        val matByte = MatOfByte()
        val destination = Mat()
        Imgproc.resize(mat, destination, Size(1024.0, 768.0))
        Imgcodecs.imencode(".jpg", destination, matByte)

        val stream = ByteArrayInputStream(matByte.toArray())
        val image = ImageIO.read(stream)
        label.icon = ImageIcon(image)
    }
}