if (width > req_w) {
x_ofs = (width - req_w) / 2;
width = req_w;
- }
+ } else
+ dst += (req_w - width) / 2;
height = png_get_image_height(png_ptr, info_ptr);
if (height > req_h) {
y_ofs = (height - req_h) / 2;
height = req_h;
- }
+ } else
+ dst += (req_h - height) / 2 * req_w;
for (h = 0; h < height; h++)
{