CvCamera.java 文件源码

/**
 * Opens a new camera using openCV at a certain device index with 
 * a given frame width and height, and a compression quality.
 * 
 * @param cam the device index from 0.
 * @param width the frame width
 * @param height the frame height
 * @param quality the compression quality
 * 
 * @throws RuntimeException if the camera could not be opened
 */
public CvCamera(int cam, int width, int height, int quality){
    capture = new VideoCapture();
    capture.open(cam);
    if(!capture.isOpened())
        throw new RuntimeException("Unable to open camera " + cam);

    image = new Mat();
    buffer = new MatOfByte();
    compressParams = new MatOfInt(Imgcodecs.CV_IMWRITE_JPEG_QUALITY, quality);
    capture.set(Videoio.CAP_PROP_FRAME_WIDTH, width);
    capture.set(Videoio.CAP_PROP_FRAME_HEIGHT, height);

    camIndex = cam;
    this.quality = quality;
}