pub unsafe extern "C" fn WebPIDecGetYUVA( idec: *const WebPIDecoder, last_y: *mut c_int, u: *mut *mut u8, v: *mut *mut u8, a: *mut *mut u8, width: *mut c_int, height: *mut c_int, stride: *mut c_int, uv_stride: *mut c_int, a_stride: *mut c_int) -> *mut u8