Marsyas  0.6.0-alpha
/usr/src/RPM/BUILD/marsyas-0.6.0/src/marsyas/sched/TmVirtualTime.h
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00001 /*
00002 ** Copyright (C) 1998-2005 George Tzanetakis <gtzan@cs.uvic.ca>
00003 **
00004 ** This program is free software; you can redistribute it and/or modify
00005 ** it under the terms of the GNU General Public License as published by
00006 ** the Free Software Foundation; either version 2 of the License, or
00007 ** (at your option) any later version.
00008 **
00009 ** This program is distributed in the hope that it will be useful,
00010 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 ** GNU General Public License for more details.
00013 **
00014 ** You should have received a copy of the GNU General Public License
00015 ** along with this program; if not, write to the Free Software
00016 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017 */
00018 
00019 #ifndef MARSYAS_TM_VIRTUAL_TIME_H
00020 #define MARSYAS_TM_VIRTUAL_TIME_H
00021 
00022 #include <marsyas/sched/TmTimer.h>
00023 #include <marsyas/system/MarControlValue.h>
00024 #include <marsyas/system/MarSystem.h>
00025 
00026 namespace Marsyas
00027 {
00035 // forward declaration of MarSystem allows Scheduler.getctrl("insamples")
00036 // for scheduler count
00037 class MarSystem; // forward declaration
00038 
00039 class TmVirtualTime : public TmTimer {
00040 protected:
00042   MarSystem* read_src_;
00045   MarControlPtr nsamples_;
00048   MarControlPtr srate_;
00051   mrs_real error_term_;
00053   mrs_natural previous_tick_interval_;
00054 
00055 public:
00060   TmVirtualTime();
00066   TmVirtualTime(std::string name);
00071   TmVirtualTime(std::string name, MarSystem* ms);
00075   TmVirtualTime(const TmVirtualTime& s);
00076 
00077   virtual ~TmVirtualTime();
00078 
00087   void setSource(MarSystem* ms);
00092   mrs_natural readTimeSrc();
00101   mrs_natural intervalsize(std::string interval);
00109   virtual void updtimer(std::string cname, TmControlValue value);
00110 };
00111 
00112 }//namespace Marsyas
00113 
00114 #endif