Practica2Ej1.c

int main(int argc, char **argv) {

    if (argc != 2) {
        printf("Error: Usage %s image_file_name\n", argv[0]);
        return EXIT_FAILURE;
    }

    //CV_LOAD_IMAGE_COLOR = 1 forces the resultant IplImage to be colour.
    //CV_LOAD_IMAGE_GRAYSCALE = 0 forces a greyscale IplImage.
    //CV_LOAD_IMAGE_UNCHANGED = -1
    
    IplImage* ImgOrigen = cvLoadImage(argv[1], CV_LOAD_IMAGE_COLOR);
    
    IplImage* ImgDestino = cvCreateImage(cvSize(ImgOrigen->width, ImgOrigen->height), IPL_DEPTH_8U, 3);
    
    // Always check if the program can find the image file
    if (!ImgOrigen) {
        printf("Error: file %s not found\n", argv[1]);
        return EXIT_FAILURE;
    }

    int fila, cc;
    for(fila = 0; fila < ImgOrigen->height; fila++) {
        __m128i*pImgOrigen = (__m128i*) (ImgOrigen->imageData + fila*ImgOrigen->widthStep);
        __m128i*pImgDestino = (__m128i*) (ImgDestino->imageData + fila*ImgDestino->widthStep);
        __m128i registro;
        for(cc = 0; cc < ImgOrigen->widthStep; cc=cc+16) {
        //Opcion 1
        registro =*pImgOrigen++;*pImgDestino++ = registro;
        //Opcion 2
        //registro = _mm_load_si128(pImgOrigen++);
        //_mm_store_si128(pImgDestino++,registro);
        //Opcion 3, para datos no alineados en memoria
        //registro = _mm_loadu_si128(pImgOrigen++);
        //_mm_storeu_si128(pImgDestino++,registro);
        }
    }
    cvNamedWindow("Imagen Original", CV_WINDOW_AUTOSIZE);
    cvShowImage("Imagen Original", ImgOrigen);
    // crea y muestras las ventanas con las im genes
    cvNamedWindow("Imagen Destino", CV_WINDOW_AUTOSIZE);
    cvShowImage("Imagen Destino", ImgDestino);
    
    cvWaitKey(0);


    // memory release for images before exiting the application
    cvReleaseImage(&ImgDestino);
    cvReleaseImage(&ImgOrigen);

    // Self-explanatory
    cvDestroyWindow(argv[1]);
    cvDestroyWindow("Imagen Recolor");

    return EXIT_SUCCESS;
}