void create_iio_file(char *filename, int w, int h, int spp)
{
int n = w * h * spp;
char *buf = xmalloc(n);
memset(buf, 0, n);
iio_save_image_uint8_vec(filename, buf, w, h, spp);
free(buf);
}
// read an image in any format from STDIN and write a ppm to STDOUT
int main(int c, char *v[])
{
int w, h, pixeldim;
uint8_t *x = iio_read_image_uint8_vec("-", &w, &h, &pixeldim);
fprintf(stderr, "got a %dx%d image with %d channels\n", w, h, pixeldim);
iio_save_image_uint8_vec("-", x, w, h, pixeldim);
free(x);
return 0;
}
int main_pan(int c, char *v[])
{
// process input arguments
char *imask_option = pick_option(&c, &v, "m", "");
if (c > 4) {
fprintf(stderr, "usage:\n\t"
"%s [in.fft [out.fft [out.mask]]]\n", *v);
// 0 1 2 3
return c;
}
char *filename_in = c > 1 ? v[1] : "-";
char *filename_out = c > 2 ? v[2] : "-";
char *filename_mask = c > 3 ? v[3] : NULL;
char *filename_imask = *imask_option ? imask_option : NULL;
// read image
struct pan_state e[1];
int pd;
e->fft = (void*)iio_read_image_float_vec(filename_in, &e->w, &e->h,&pd);
if (pd != 2 && pd != 6)
return fprintf(stderr, "input must be a fft (got pd=%d)\n", pd);
e->pd = pd / 2;
create_pyramid(e);
if (filename_imask) {
int mw, mh;
e->mask = iio_read_image_uint8(filename_imask,&mw,&mh);
if (mw != e->w || mh != e->h)
return fprintf(stderr, "input mask bad size\n");
fprintf(stderr, "using input mask from file \"%s\"\n",
filename_imask);
} else {
e->mask = malloc(e->w * e->h);
memset(e->mask, 1, e->w * e->h);
}
// open window
struct FTR f = ftr_new_window(BAD_MIN(e->w,512), BAD_MIN(e->h,512));
f.userdata = e;
action_reset_zoom_and_position(&f);
ftr_set_handler(&f, "expose", pan_exposer);
ftr_set_handler(&f, "motion", pan_motion_handler);
ftr_set_handler(&f, "button", pan_button_handler);
ftr_set_handler(&f, "key" , pan_key_handler);
int r = ftr_loop_run(&f);
// apply computed mask
for (int i = 0; i < e->w * e->h; i++)
if (!e->mask[i])
for (int l = 0; l < e->pd; l++)
e->fft[i*e->pd+l] = 0;
// save output images
iio_save_image_float_vec(filename_out, (void*)e->fft, e->w,e->h, pd);
if (filename_mask)
iio_save_image_uint8_vec(filename_mask, e->mask, e->w, e->h, 1);
// cleanup and exit (optional)
ftr_close(&f);
return r;
}