Jack2 1.9.8

JackTimedDriver.h

00001 /*
00002 Copyright (C) 2001 Paul Davis
00003 Copyright (C) 2004-2008 Grame
00004 
00005 This program is free software; you can redistribute it and/or modify
00006 it under the terms of the GNU General Public License as published by
00007 the Free Software Foundation; either version 2 of the License, or
00008 (at your option) any later version.
00009 
00010 This program is distributed in the hope that it will be useful,
00011 but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013 GNU General Public License for more details.
00014 
00015 You should have received a copy of the GNU General Public License
00016 along with this program; if not, write to the Free Software
00017 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 
00019 */
00020 
00021 #ifndef __JackTimedDriver__
00022 #define __JackTimedDriver__
00023 
00024 #include "JackAudioDriver.h"
00025 
00026 namespace Jack
00027 {
00028 
00033 class SERVER_EXPORT JackTimedDriver : public JackAudioDriver
00034 {
00035     protected:
00036 
00037         int fCycleCount;
00038         jack_time_t fAnchorTimeUsec;
00039 
00040         int FirstCycle(jack_time_t cur_time);
00041         int CurrentCycle(jack_time_t cur_time);
00042 
00043         void ProcessWait();
00044 
00045     public:
00046 
00047         JackTimedDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
00048                 : JackAudioDriver(name, alias, engine, table), fCycleCount(0), fAnchorTimeUsec(0)
00049         {}
00050         virtual ~JackTimedDriver()
00051         {}
00052 
00053         // BufferSize can be changed
00054         bool IsFixedBufferSize()
00055         {
00056             return false;
00057         }
00058 
00059         int Start();
00060 
00061 };
00062 
00063 class SERVER_EXPORT JackWaiterDriver : public JackTimedDriver
00064 {
00065 
00066     public:
00067 
00068         JackWaiterDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
00069             : JackTimedDriver(name, alias, engine, table)
00070         {}
00071         virtual ~JackWaiterDriver()
00072         {}
00073 
00074         virtual int ProcessNull();
00075 
00076 };
00077 
00078 } // end of namespace
00079 
00080 #endif