zmusic/thirdparty/adlmidi/chips/dosbox_opl3.cpp
Wohlstand a175de1531 The small update at libADLMIDI
- Fixed a bug of DMX frequency, accidentally ported from DMX
- Removed the useless adlmidi_sequencer.cpp file
- Synchronize all files of chipset with OPL3-BE
2020-10-15 13:31:04 +02:00

90 lines
2.4 KiB
C++

/*
* Interfaces over Yamaha OPL3 (YMF262) chip emulators
*
* Copyright (c) 2017-2020 Vitaly Novichkov (Wohlstand)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "dosbox_opl3.h"
#include "dosbox/dbopl.h"
#include <new>
#include <cstdlib>
#include <assert.h>
DosBoxOPL3::DosBoxOPL3() :
OPLChipBaseBufferedT(),
m_chip(new DBOPL::Handler)
{
reset();
}
DosBoxOPL3::~DosBoxOPL3()
{
DBOPL::Handler *chip_r = reinterpret_cast<DBOPL::Handler*>(m_chip);
delete chip_r;
}
void DosBoxOPL3::globalPreInit()
{
DBOPL::InitTables();
}
void DosBoxOPL3::setRate(uint32_t rate)
{
OPLChipBaseBufferedT::setRate(rate);
DBOPL::Handler *chip_r = reinterpret_cast<DBOPL::Handler*>(m_chip);
chip_r->~Handler();
new(chip_r) DBOPL::Handler;
chip_r->Init(effectiveRate());
}
void DosBoxOPL3::reset()
{
OPLChipBaseBufferedT::reset();
DBOPL::Handler *chip_r = reinterpret_cast<DBOPL::Handler*>(m_chip);
chip_r->~Handler();
new(chip_r) DBOPL::Handler;
chip_r->Init(effectiveRate());
}
void DosBoxOPL3::writeReg(uint16_t addr, uint8_t data)
{
DBOPL::Handler *chip_r = reinterpret_cast<DBOPL::Handler*>(m_chip);
chip_r->WriteReg(static_cast<Bit32u>(addr), data);
}
void DosBoxOPL3::writePan(uint16_t addr, uint8_t data)
{
DBOPL::Handler *chip_r = reinterpret_cast<DBOPL::Handler*>(m_chip);
chip_r->WritePan(static_cast<Bit32u>(addr), data);
}
void DosBoxOPL3::nativeGenerateN(int16_t *output, size_t frames)
{
DBOPL::Handler *chip_r = reinterpret_cast<DBOPL::Handler*>(m_chip);
Bitu frames_i = frames;
chip_r->GenerateArr(output, &frames_i);
}
const char *DosBoxOPL3::emulatorName()
{
return "DOSBox 0.74-r4111 OPL3";
}
OPLChipBase::ChipType DosBoxOPL3::chipType()
{
return CHIPTYPE_OPL3;
}