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#include "test_precomp.hpp"

using namespace cv;
using namespace cv::gpu;

struct CV_GpuStereoBMTest : public cvtest::BaseTest
{
    void run_stress()
    {                
        RNG rng;

        for(int i = 0; i < 10; ++i)
        {
            int winSize = cvRound(rng.uniform(2, 11)) * 2 + 1;

            for(int j = 0; j < 10; ++j)
            {
                int ndisp = cvRound(rng.uniform(5, 32)) * 8;

                for(int s = 0; s < 10; ++s)
                {
                    int w =  cvRound(rng.uniform(1024, 2048));
                    int h =  cvRound(rng.uniform(768, 1152));

                    for(int p = 0; p < 2; ++p)
                    {
                        //int winSize = winsz[i];
                        //int disp = disps[j];
                        Size imgSize(w, h);//res[s];
                        int preset = p;

                        printf("Preset = %d, nidsp = %d, winsz = %d, width = %d, height = %d\n", p, ndisp, winSize, imgSize.width, imgSize.height);

                        GpuMat l(imgSize, CV_8U);
                        GpuMat r(imgSize, CV_8U);

                        GpuMat disparity;
                        StereoBM_GPU bm(preset, ndisp, winSize);
                        bm(l, r, disparity);

            
                    }
                }
            }
        }
    }

    void run(int )
    {
        /*run_stress();
        return;*/

	    cv::Mat img_l = cv::imread(std::string(ts->get_data_path()) + "stereobm/aloe-L.png", 0);
	    cv::Mat img_r = cv::imread(std::string(ts->get_data_path()) + "stereobm/aloe-R.png", 0);
	    cv::Mat img_reference = cv::imread(std::string(ts->get_data_path()) + "stereobm/aloe-disp.png", 0);

        if (img_l.empty() || img_r.empty() || img_reference.empty())
        {
            ts->set_failed_test_info(cvtest::TS::FAIL_MISSING_TEST_DATA);
            return;
        }

        cv::gpu::GpuMat disp;
        cv::gpu::StereoBM_GPU bm(0, 128, 19);
        bm(cv::gpu::GpuMat(img_l), cv::gpu::GpuMat(img_r), disp);

        disp.convertTo(disp, img_reference.type());
        double norm = cv::norm(disp, img_reference, cv::NORM_INF);

        //cv::imwrite(std::string(ts->get_data_path()) + "stereobm/aloe-disp.png", disp);

        /*cv::imshow("disp", disp);
        cv::imshow("img_reference", img_reference);

        cv::Mat diff = (cv::Mat)disp - (cv::Mat)img_reference;
        cv::imshow("diff", diff);
        cv::waitKey();*/

        if (norm >= 100)
        {
            ts->printf(cvtest::TS::LOG, "\nStereoBM norm = %f\n", norm);
            ts->set_failed_test_info(cvtest::TS::FAIL_GENERIC);
            return;
        }

        ts->set_failed_test_info(cvtest::TS::OK);
    }
};

TEST(StereoBM, regression) { CV_GpuStereoBMTest test; test.safe_run(); }