scummvm/sound/fmopl.cpp

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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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.
*
* $URL$
* $Id$
*/
#include "sound/fmopl.h"
#include "sound/softsynth/opl/dosbox.h"
#include "sound/softsynth/opl/mame.h"
namespace OPL {
bool OPL::_hasInstance = false;
OPL *OPL::create(kOplType type) {
// Simple hack to assure we only create one instance,
// since the DOSBox OPL emulator does not allow more than
// one instance.
assert(!_hasInstance);
_hasInstance = true;
if (type == kOpl2)
return new MAME::OPL_MAME();
else
#ifndef DISABLE_DOSBOX_ADLIB
return new DOSBox::OPL_DOSBox(type);
#else
return 0;
#endif
}
} // end of namespace OPL
void OPLDestroy(FM_OPL *OPL) {
delete OPL;
}
void OPLResetChip(FM_OPL *OPL) {
OPL->reset();
}
void OPLWrite(FM_OPL *OPL, int a, int v) {
OPL->write(a, v);
}
unsigned char OPLRead(FM_OPL *OPL, int a) {
return OPL->read(a);
}
void OPLWriteReg(FM_OPL *OPL, int r, int v) {
OPL->writeReg(r, v);
}
void YM3812UpdateOne(FM_OPL *OPL, int16 *buffer, int length) {
OPL->readBuffer(buffer, length);
}
// Factory method
FM_OPL *makeAdlibOPL(int rate) {
FM_OPL *opl = OPL::OPL::create();
if (opl) {
if (!opl->init(rate)) {
delete opl;
opl = 0;
}
}
return opl;
}