pub unsafe extern "C" fn speex_preprocess_ctl(
st: *mut SpeexPreprocessState,
request: c_int,
ptr: *mut c_void,
) -> c_intExpand description
Used like the ioctl function to control the preprocessor parameters @param st Preprocessor state @param request ioctl-type request (one of the SPEEX_PREPROCESS_* macros) @param ptr Data exchanged to-from function @return 0 if no error, -1 if request in unknown