pub unsafe extern "C" fn hal_stream_read(
stream: *mut hal_stream_t,
buf: *mut hal_stream_data,
sampleno: *mut c_uint,
) -> c_intpub unsafe extern "C" fn hal_stream_read(
stream: *mut hal_stream_t,
buf: *mut hal_stream_data,
sampleno: *mut c_uint,
) -> c_int