advanced.cpp
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/*
mpg123clr: MPEG Audio Decoder library Common Language Runtime version.
copyright 2009 by Malcolm Boczek - free software under the terms of the LGPL 2.1
mpg123clr.dll is a derivative work of libmpg123 - all original mpg123 licensing terms apply.
All rights to this work freely assigned to the mpg123 project.
*/
/*
libmpg123: MPEG Audio Decoder library
copyright 1995-2008 by the mpg123 project - free software under the terms of the LGPL 2.1
see COPYING and AUTHORS files in distribution or http://mpg123.org
*/
/*
1.8.1.0 04-Aug-09 Initial release.
1.9.0.0 24-Sep-09 Function names harmonized with libmpg123 (mb)
1.9.0.0 13-Oct-09 pin_ptr = nullptr on return (mb)
1.9.0.1 24-Nov-09 performance update - removed try/finally (mb)
*/
#include "StdAfx.h"
#include "advanced.h"
mpg123clr::advpars::advpars(int% error)
{
pin_ptr<int> err = &error;
mp = ::mpg123_new_pars(err);
err = nullptr;
}
mpg123clr::advpars::~advpars(void)
{
// clean up code to release managed resources
// ...
// call Finalizer to clean up unmanaged resources
this->!advpars();
}
mpg123clr::advpars::!advpars(void)
{
if (mp != NULL)
{
::mpg123_delete_pars(mp);
mp = NULL;
}
}
mpg123clr::mpg::ErrorCode mpg123clr::advpars::mpg123_fmt_none(void)
{
return (mpg123clr::mpg::ErrorCode) ::mpg123_fmt_none(mp);
}
mpg123clr::mpg::ErrorCode mpg123clr::advpars::mpg123_fmt_all(void)
{
return (mpg123clr::mpg::ErrorCode) ::mpg123_fmt_all(mp);
}
mpg123clr::mpg::ErrorCode mpg123clr::advpars::mpg123_fmt(int rate, mpg123clr::mpg::channelcount channels, int encodings)
{
return (mpg123clr::mpg::ErrorCode) ::mpg123_fmt(mp, rate, (int)channels, encodings);
}
mpg123clr::mpg::channelcount mpg123clr::advpars::mpg123_fmt_support(int rate, int encodings)
{
return (mpg123clr::mpg::channelcount) ::mpg123_fmt_support(mp, rate, encodings);
}
mpg123clr::mpg::ErrorCode mpg123clr::advpars::mpg123_par(mpg123clr::mpg::parms type, int val, double fval)
{
return (mpg123clr::mpg::ErrorCode) ::mpg123_par(mp, (mpg123_parms) type, val, fval);
}
mpg123clr::mpg::ErrorCode mpg123clr::advpars::mpg123_getpar(mpg123clr::mpg::parms type, [Out] int% val, [Out] double% fval)
{
// Avoid need for local intermediary variables
pin_ptr<int> _val = &val;
pin_ptr<double> _fval = &fval;
int ret = ::mpg123_getpar(mp, (mpg123_parms) type, (long*)_val, _fval);
_fval = nullptr;
_val = nullptr;
return (mpg123clr::mpg::ErrorCode) ret;
}