#include"ac.h"

extern "C" void filter(cv::Mat  &frame) {
    static constexpr int MAX = 8;
    static ac::MatrixCollection<MAX> collection;
    if(collection.empty())
        collection.shiftFrames(frame);
    collection.shiftFrames(frame);
    
    cv::Mat diff;
    absdiff(collection.frames[0], collection.frames[1], diff);

    
    for(int z = 0; z < frame.rows; ++z) {
        for(int i = 0; i < frame.cols; ++i) {
            cv::Vec3b &pixel = ac::pixelAt(frame, z, i);
            cv::Vec3b pix = diff.at<cv::Vec3b>(z, i);
            if(pix[0]+pix[1]+pix[2] > 15) {
                pixel[0] = 255;
                pixel[1] = 255;
                pixel[2] = 255;
            }
        }
    }
}