int i, j;
int x, y; /* X and Y position in source (fixed_point) */
- guchar **line_bufs = g_new (guchar *, filter->y.n);
- int *filter_weights = make_filter_table (filter);
+ guchar **line_bufs;
+ int *filter_weights;
- int x_step = (1 << SCALE_SHIFT) / scale_x; /* X step in source (fixed point) */
- int y_step = (1 << SCALE_SHIFT) / scale_y; /* Y step in source (fixed point) */
+ int x_step;
+ int y_step;
+
+ x_step = (1 << SCALE_SHIFT) / scale_x; /* X step in source (fixed point) */
+ y_step = (1 << SCALE_SHIFT) / scale_y; /* Y step in source (fixed point) */
+
+ if (x_step == 0 || y_step == 0)
+ return; /* overflow, bail out */
+
+ line_bufs = g_new (guchar *, filter->y.n);
+ filter_weights = make_filter_table (filter);
int check_shift = check_size ? get_check_shift (check_size) : 0;