107 lines
2.6 KiB
C++
107 lines
2.6 KiB
C++
/*
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Copyright (C) 2001 Paul Davis
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Copyright (C) 2004-2008 Grame
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __JackTimedDriver__
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#define __JackTimedDriver__
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#include "JackAudioDriver.h"
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namespace Jack
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{
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/*!
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\brief The timed driver.
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*/
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class SERVER_EXPORT JackTimedDriver : public JackAudioDriver
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{
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protected:
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int fCycleCount;
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jack_time_t fAnchorTimeUsec;
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int FirstCycle(jack_time_t cur_time);
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int CurrentCycle(jack_time_t cur_time);
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void ProcessWait();
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public:
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JackTimedDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
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: JackAudioDriver(name, alias, engine, table), fCycleCount(0), fAnchorTimeUsec(0)
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{}
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virtual ~JackTimedDriver()
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{}
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// BufferSize can be changed
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bool IsFixedBufferSize()
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{
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return false;
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}
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int Start();
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};
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class SERVER_EXPORT JackWaiterDriver : public JackTimedDriver
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{
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public:
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JackWaiterDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
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: JackTimedDriver(name, alias, engine, table)
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{}
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virtual ~JackWaiterDriver()
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{}
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virtual int ProcessNull();
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};
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/*!
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\brief A restartable driver.
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When wrapped into a JackWaitCallbackDriver, this driver can restart the
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wrapper thread which will wait again for the Initialize method to return.
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*/
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class SERVER_EXPORT JackRestarterDriver : public JackWaiterDriver
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{
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private:
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JackDriver* fRestartDriver; /*!< The wrapper driver */
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public:
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JackRestarterDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
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: JackWaiterDriver(name, alias, engine, table), fRestartDriver(NULL)
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{}
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virtual ~JackRestarterDriver()
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{}
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void SetRestartDriver(JackDriver* driver); /*!< Let the wrapper register itself */
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int RestartWait(); /*!< Restart the wrapper thread */
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};
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} // end of namespace
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#endif
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