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pcbell.h

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00001 #ifndef __PCBELL_H_INCLUDED__
00002 #define __PCBELL_H_INCLUDED__
00003 
00004 // $Id
00005 
00006 //**********************************************************************
00007 //                                                                     *
00008 //    Description:   'Bell Master' implementation of block instrument  *
00009 //                   bell using PC (hardware to produce actual ring    *
00010 //                   abstracted by 'Note' class).                      *
00011 //                                                                     *
00012 //    Author:        Chris White (whitecf@bcs.org.uk)                  *
00013 //                                                                     *
00014 //    Copyright (C) 2003  Monitor Computing Services Ltd.              *
00015 //                                                                     *
00016 //    This program is free software; you can redistribute it and/or    *
00017 //    modify it under the terms of the GNU General Public License      *
00018 //    as published by the Free Software Foundation; either version 2   *
00019 //    of the License, or any later version.                            *
00020 //                                                                     *
00021 //    This program is distributed in the hope that it will be useful,  *
00022 //    but WITHOUT ANY WARRANTY; without even the implied warranty of   *
00023 //    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the    *
00024 //    GNU General Public License for more details.                     *
00025 //                                                                     *
00026 //    You should have received a copy of the GNU General Public        *
00027 //    License (http://www.gnu.org/copyleft/gpl.html) along with this   *
00028 //    program; if not, write to:                                       *
00029 //       The Free Software Foundation Inc.,                            *
00030 //       59 Temple Place - Suite 330,                                  *
00031 //       Boston, MA  02111-1307,                                       *
00032 //       USA.                                                          *
00033 //                                                                     *
00034 //**********************************************************************
00035 //                                                                     *
00036 //    Notes:                                                           *
00037 //                                                                     *
00038 //**********************************************************************
00039 
00040 
00041 #include "bell.h"
00042 
00043 
00044 // Forward Declerations
00045 namespace Monitor {
00046     namespace Utility {
00047         class    Note;
00048     };
00049 namespace BellMaster {
00050 
00051 
00052 
00057 class PcBell : public Bell
00058 {
00059 public:
00063     PcBell(Monitor::Utility::Note&    newNote);
00064 
00068     virtual ~PcBell();
00069 
00070 
00076     virtual void
00077     ring() const
00078     throw (Bell::Busy);
00079 
00088     virtual void
00089     ring(unsigned*    newSequence)
00090     throw (Bell::Busy);
00091 
00095     Monitor::Utility::Note&
00096     getNote() const;
00097 
00098 private:
00103     void
00104     nextRing();
00105 
00109     unsigned*    currentSequence;
00110 
00114     Monitor::Utility::Note&    note;
00115 }; // class PcBell
00116 
00117 };  // namespace BellMaster
00118 };  // namespace Monitor
00119 
00120 
00121 #endif // __PCBELL_H_INCLUDED__

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