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/*
Copyright (C) 2001 Paul Davis
Copyright (C) 2004-2008 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 __JackTimedDriver__
#define __JackTimedDriver__
#include "JackAudioDriver.h"
namespace Jack
{
/*!
\brief The timed driver.
*/
class SERVER_EXPORT JackTimedDriver : public JackAudioDriver
{
protected:
int fCycleCount;
jack_time_t fAnchorTimeUsec;
int FirstCycle(jack_time_t cur_time);
int CurrentCycle(jack_time_t cur_time);
void ProcessWait();
public:
JackTimedDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
: JackAudioDriver(name, alias, engine, table), fCycleCount(0), fAnchorTimeUsec(0)
{}
virtual ~JackTimedDriver()
{}
// BufferSize can be changed
bool IsFixedBufferSize()
{
return false;
}
int Start();
};
class SERVER_EXPORT JackWaiterDriver : public JackTimedDriver
{
public:
JackWaiterDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
: JackTimedDriver(name, alias, engine, table)
{}
virtual ~JackWaiterDriver()
{}
virtual int ProcessNull();
};
/*!
\brief A restartable driver.
When wrapped into a JackWaitCallbackDriver, this driver can restart the
wrapper thread which will wait again for the Initialize method to return.
*/
class SERVER_EXPORT JackRestarterDriver : public JackWaiterDriver
{
private:
JackDriver* fRestartDriver; /*!< The wrapper driver */
public:
JackRestarterDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
: JackWaiterDriver(name, alias, engine, table), fRestartDriver(NULL)
{}
virtual ~JackRestarterDriver()
{}
void SetRestartDriver(JackDriver* driver); /*!< Let the wrapper register itself */
int RestartWait(); /*!< Restart the wrapper thread */
};
} // end of namespace
#endif
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