Function main

cpp/5_Domain_Specific/recursiveGaussian/recursiveGaussian.cpp:428–530

/////////////////////////////////////////////////////////////////////////// Program main ///////////////////////////////////////////////////////////////////////////

// Program main
////////////////////////////////////////////////////////////////////////////////
int main(int argc, char **argv)
{
    pArgc          = &argc;
    pArgv          = argv;
    char *ref_file = NULL;

#if defined(__linux__)
    setenv("DISPLAY", ":0", 0);
#endif

    printf("%s Starting...\n\n", sSDKsample);

    printf("NOTE: The CUDA Samples are not meant for performance measurements. "
           "Results may vary when GPU Boost is enabled.\n\n");

    // use command-line specified CUDA device, otherwise use device with highest
    // Gflops/s
    if (argc > 1) {
        if (checkCmdLineFlag(argc, (const char **)argv, "file")) {
            getCmdLineArgumentString(argc, (const char **)argv, "file", &ref_file);
            fpsLimit = frameCheckNumber;
        }
    }

    // Get the path of the filename
    char *filename;

    if (getCmdLineArgumentString(argc, (const char **)argv, "image", &filename)) {
        image_filename = filename;
    }

    // load image
    char *image_path = sdkFindFilePath(image_filename, argv[0]);

    if (image_path == NULL) {
        fprintf(stderr, "Error unable to find and load image file: '%s'\n", image_filename);
        exit(EXIT_FAILURE);
    }

    sdkLoadPPM4ub(image_path, (unsigned char **)&h_img, &width, &height);

    if (!h_img) {
        printf("Error unable to load PPM file: '%s'\n", image_path);
        exit(EXIT_FAILURE);
    }

    printf("Loaded '%s', %d x %d pixels\n", image_path, width, height);

    if (checkCmdLineFlag(argc, (const char **)argv, "threads")) {
        nthreads = getCmdLineArgumentInt(argc, (const char **)argv, "threads");
    }

    if (checkCmdLineFlag(argc, (const char **)argv, "sigma")) {
        sigma = getCmdLineArgumentFloat(argc, (const char **)argv, "sigma");
    }

    runBenchmark = checkCmdLineFlag(argc, (const char **)argv, "benchmark");