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/*
Copyright (C) 2004-2008 Grame
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __JackMMCSS__
#define __JackMMCSS__
#include "JackSystemDeps.h"
#include "JackCompilerDeps.h"
#include <windows.h>
#include <map>
namespace Jack
{
typedef enum _AVRT_PRIORITY {
AVRT_PRIORITY_LOW = -1,
AVRT_PRIORITY_NORMAL, /* 0 */
AVRT_PRIORITY_HIGH, /* 1 */
AVRT_PRIORITY_CRITICAL /* 2 */
} AVRT_PRIORITY, *PAVRT_PRIORITY;
#define BASE_REALTIME_PRIORITY 90
typedef HANDLE (WINAPI *avSetMmThreadCharacteristics)(LPCTSTR, LPDWORD);
typedef BOOL (WINAPI *avRevertMmThreadCharacteristics)(HANDLE);
typedef BOOL (WINAPI *avSetMmThreadPriority)(HANDLE, AVRT_PRIORITY);
/*!
\brief MMCSS services.
*/
class SERVER_EXPORT JackMMCSS
{
private:
static JACK_HANDLE fAvrtDll;
static avSetMmThreadCharacteristics ffMMCSSFun1;
static avSetMmThreadPriority ffMMCSSFun2;
static avRevertMmThreadCharacteristics ffMMCSSFun3;
static std::map<jack_native_thread_t, HANDLE> fHandleTable;
public:
JackMMCSS();
~JackMMCSS();
static int MMCSSAcquireRealTime(jack_native_thread_t thread, int priority);
static int MMCSSDropRealTime(jack_native_thread_t thread);
};
} // end of namespace
#endif
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