int main_times(int c, char *v[])
{
// process input arguments
if (c != 3) {
fprintf(stderr, "usage:\n\t%s file.tiff factor\n", *v);
// 0 1 2
return 1;
}
char *filename = v[1];
double factor = atof(v[2]);
// open image
struct fancy_image *f = fancy_image_open(filename, "rw,megabytes=33");
// process data
for (int j = 0; j < f->h; j++)
for (int i = 0; i < f->w; i++)
for (int l = 0; l < f->pd; l++)
{
double x = fancy_image_getsample(f, i, j, l);
x = x * factor;
fancy_image_setsample(f, i, j, l, x);
}
// close image (and save remaining updated tiles)
fancy_image_close(f);
// exit
return 0;
}
int main_setsample(int c, char *v[])
{
if (c != 7) {
fprintf(stderr, "usage:\n\t"
"%s inout.tiff opts i j l v\n",*v);
// 0 1 2 3 4 5 6
return 1;
}
char *filename = v[1];
char *opts = v[2];
int arg_i = atoi(v[3]);
int arg_j = atoi(v[4]);
int arg_l = atoi(v[5]);
float arg_v = atof(v[6]);
struct fancy_image *f = fancy_image_open(filename, opts);
fancy_image_setsample(f, arg_i, arg_j, arg_l, arg_v);
fancy_image_close(f);
return 0;
}
static void fancy_zoom_out_by_factor_two(char *fname_out, char *fname_in, int m)
{
// open input image
struct fancy_image *a = fancy_image_open(fname_in, "r");
// read information from input image
int tw = 0, th = 0, fmt = 0, bps = 0;
int tiffo = fancy_image_leak_tiff_info(&tw, &th, &fmt, &bps, a);
// create output image of the appropriate size and options
int pw = ceil(a->w / 2.0);
int ph = ceil(a->h / 2.0);
struct fancy_image *b = fancy_image_create(fname_out,
"w=%d,h=%d,pd=%d,bps=%d,fmt=%d,tw=%d,th=%d",
pw, ph, a->pd, bps, fmt, tw, th);
// fill-in the zoomed-out image
for (int j = 0; j < b->h; j++)
for (int i = 0; i < b->w; i++)
for (int l = 0; l < b->pd; l++)
{
int ii = 2 * i;
int jj = 2 * j;
double v[4] = {
fancy_image_getsample(a, ii + 0, jj + 0, l),
fancy_image_getsample(a, ii + 1, jj + 0, l),
fancy_image_getsample(a, ii + 0, jj + 1, l),
fancy_image_getsample(a, ii + 1, jj + 1, l)
};
double r = combine_4doubles(v, m);
fancy_image_setsample(b, i, j, l, r);
}
// close both images
fancy_image_close(b);
fancy_image_close(a);
}
