int main(int argc, char* argv[])
{
if (argc < 5) {
std::cout << "Usage:" << std::endl;
std::cout << " " << argv[0] << " <input_file> <output_file> <number of runs> <number of threads>" << std::endl;
return 0;
}
struct timeval start, end;
int iter = atoi(argv[3]), i, j, k;
int n_threads = atoi(argv[4]);
double usec = 0;
std::vector<std::thread> threads;
load_image_file(argv[1]); /* Input of image1 */
for(i = 0; i < iter; i++)
{
barrier1 = barrier2 = 0; /* Init barriers on every iteration */
gettimeofday(&start, NULL);
/* Calculation of histogram */
for (j = 0; j < GRAYLEVEL; j++) {
histogram[j] = 0;
}
max_frequency = -1;
for (j = 0; j < IMAGESIZE ; j++) {
for (k = 0; k < IMAGESIZE; k++) {
image2[j][k] = 0;
}
}
for (j = 0; j < n_threads; j++) {
threads.push_back(std::thread(make_histogram_image, j, n_threads));
}
for (j = 0; j < n_threads; j++) {
threads[j].join();
}
gettimeofday(&end, NULL);
usec += end.tv_usec + 1000000*(end.tv_sec - start.tv_sec) - start.tv_usec;
threads.clear();
}
save_image_file(argv[2]); /* Output of image2 */
std::cout << "histogram takes: " << (double)usec / 1000000 << "sec mean: " << (double)usec / 1000000 / iter <<"sec image size: " << y_size1*x_size1 << std::endl;
return 0;
}
int
main()
{
typedef agg::pixfmt_bgr24 pixel_type;
const unsigned w = 60, h = 50;
unsigned row_size = pixel_type::pix_width * w;
unsigned buf_size = row_size * h;
agg::pod_array<unsigned char> img_buf(buf_size);
agg::rendering_buffer rbuf(img_buf.data(), w, h, app_flip_y ? -row_size : row_size);
pixel_type pixf(rbuf);
typedef agg::renderer_base<pixel_type> renderer_base;
typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_solid;
renderer_base rb(pixf);
renderer_solid rs(rb);
agg::rasterizer_scanline_aa<> ras;
agg::scanline_p8 sl;
agg::rgba8 white(255, 255, 255);
rb.clear(white);
agg::rgba8 color(160, 0, 0);
agg::ellipse shape(30.0, 25.0, 12.0, 12.0);
ras.add_path(shape);
rs.color(color);
agg::render_scanlines(ras, sl, rs);
save_image_file(rbuf, "output.ppm");
return 0;
}
int main(int argc, char* argv[])
{
char *pgmInputFileName, *pgmOutputFileName;
if(argc < 2 || argc > 3) {
printf("Usage: %s InputFile.pgm <Output.pgm>\n", argv[0]);
exit(1);
}
else if(argc == 2) {
pgmInputFileName = argv[1];
pgmOutputFileName = "default_output.pgm";
}
else if(argc == 3) {
pgmInputFileName = argv[1];
pgmOutputFileName = argv[2];
}
load_image_file( pgmInputFileName ); /* Input of image1 */
sobel_filtering( ); /* Sobel filter is applied to image1 */
save_image_file( pgmOutputFileName ); /* Output of image2 */
printf("Output saved...OK\n");
return 0;
}