Get a specific parameter, for a specific mpg123_pars.
See the mpg123_parms enumeration for a list of available parameters.
\param mp parameter handle
\param type parameter choice
\param value integer value return address
\param fvalue floating point value return address
\return MPG123_OK on success
Get a specific parameter, for a specific mpg123_pars. See the mpg123_parms enumeration for a list of available parameters. \param mp parameter handle \param type parameter choice \param value integer value return address \param fvalue floating point value return address \return MPG123_OK on success