pub unsafe extern "C" fn vips_region_copy(
reg: *mut VipsRegion,
dest: *mut VipsRegion,
r: *const VipsRect,
x: c_int,
y: c_int,
)
pub unsafe extern "C" fn vips_region_copy(
reg: *mut VipsRegion,
dest: *mut VipsRegion,
r: *const VipsRect,
x: c_int,
y: c_int,
)