Use an opaque handle as bitstream input. This works only with the
replaced I/O from mpg123_replace_reader_handle()!
mpg123_close() will call the cleanup callback for your handle (if you gave one).
\param mh handle
\param iohandle your handle
\return MPG123_OK on success
Use an opaque handle as bitstream input. This works only with the replaced I/O from mpg123_replace_reader_handle()! mpg123_close() will call the cleanup callback for your handle (if you gave one). \param mh handle \param iohandle your handle \return MPG123_OK on success