NullSid.h
/*
* This file is part of libsidplayfp, a SID player engine.
*
* Copyright 2012-2013 Leandro Nini <drfiemost@users.sourceforge.net>
* Copyright 2010 Antti Lankila
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef NULLSID_H
#define NULLSID_H
#include "sidplayfp/c64/c64sid.h"
class NullSid : public c64sid
{
private:
NullSid() {}
virtual ~NullSid() {}
public:
static NullSid *getInstance()
{
static NullSid nullsid;
return &nullsid;
}
void reset(uint8_t) {}
void poke(uint_least16_t address SID_UNUSED, uint8_t value SID_UNUSED) {}
uint8_t peek(uint_least16_t address SID_UNUSED) { return 0xff; }
};
#endif // NULLSID_H
NullSid::getInstance
static NullSid * getInstance()
Returns singleton instance.
Definition: NullSid.h:38
NullSid
Definition: NullSid.h:30
NullSid::poke
void poke(uint_least16_t address SID_UNUSED, uint8_t value SID_UNUSED)
Definition: NullSid.h:46
c64sid
Definition: c64sid.h:31
NullSid::peek
uint8_t peek(uint_least16_t address SID_UNUSED)
Definition: NullSid.h:47