Function libpng_sys::ffi::png_get_IHDR

pub unsafe extern "C" fn png_get_IHDR(
    png_ptr: &png_struct, 
    info_ptr: &png_info, 
    width: &mut u32, 
    height: &mut u32, 
    bit_depth: &mut c_int, 
    color_type: &mut c_int, 
    interlace_method: &mut c_int, 
    compression_method: &mut c_int, 
    filter_method: &mut c_int
) -> u32