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/*
Copyright (C) 2004-2006 Grame
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __JackEngineTiming__
#define __JackEngineTiming__
#include "types.h"
#include "JackGraphManager.h"
namespace Jack
{
#define TIME_POINTS 1000
#define JACK_ENGINE_ROLLING_COUNT 32
#define JACK_ENGINE_ROLLING_INTERVAL 1024
class JackClientInterface;
struct JackEngineControl;
/*!
\brief Timing stucture for a client.
*/
struct JackTimingMeasureClient
{
int fRefNum;
jack_time_t fSignaledAt;
jack_time_t fAwakeAt;
jack_time_t fFinishedAt;
jack_client_state_t fStatus;
};
/*!
\brief Timing stucture for a table of clients.
*/
struct JackTimingMeasure
{
long fAudioCycle;
jack_time_t fEngineTime;
JackTimingMeasureClient fClientTable[CLIENT_NUM];
};
/*!
\brief Engine timing management.
*/
class JackEngineTiming
{
private:
JackClientInterface** fClientTable;
JackGraphManager* fGraphManager;
JackEngineControl* fEngineControl;
JackTimingMeasure fMeasure[TIME_POINTS];
jack_time_t fLastTime;
jack_time_t fCurTime;
jack_time_t fProcessTime;
jack_time_t fLastProcessTime;
jack_time_t fSpareUsecs;
jack_time_t fMaxUsecs;
uint32_t fAudioCycle;
jack_time_t fRollingClientUsecs[JACK_ENGINE_ROLLING_COUNT];
int fRollingClientUsecsCnt;
int fRollingClientUsecsIndex;
int fRollingInterval;
void CalcCPULoad();
void GetTimeMeasure(jack_time_t callback_usecs);
public:
JackEngineTiming(JackClientInterface** table, JackGraphManager* manager, JackEngineControl* control);
virtual ~JackEngineTiming()
{}
void UpdateTiming(jack_time_t callback_usecs);
void ResetRollingUsecs();
void ClearTimeMeasures();
void PrintState();
};
} // end of namespace
#endif
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