mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-26 14:01:45 +00:00
79 lines
2 KiB
C++
79 lines
2 KiB
C++
/*
|
|
* Interfaces over Yamaha OPN2 (YM2612) chip emulators
|
|
*
|
|
* Copyright (C) 2017-2018 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 "mame_opn2.h"
|
|
#include "mame/mame_ym2612fm.h"
|
|
#include <cstdlib>
|
|
#include <assert.h>
|
|
|
|
MameOPN2::MameOPN2()
|
|
{
|
|
chip = NULL;
|
|
setRate(m_rate, m_clock);
|
|
}
|
|
|
|
MameOPN2::~MameOPN2()
|
|
{
|
|
ym2612_shutdown(chip);
|
|
}
|
|
|
|
void MameOPN2::setRate(uint32_t rate, uint32_t clock)
|
|
{
|
|
OPNChipBaseT::setRate(rate, clock);
|
|
if(chip)
|
|
ym2612_shutdown(chip);
|
|
uint32_t chipRate = isRunningAtPcmRate() ? rate : static_cast<uint32_t>(nativeRate);
|
|
chip = ym2612_init(NULL, (int)clock, (int)chipRate, NULL, NULL);
|
|
ym2612_reset_chip(chip);
|
|
}
|
|
|
|
void MameOPN2::reset()
|
|
{
|
|
OPNChipBaseT::reset();
|
|
ym2612_reset_chip(chip);
|
|
}
|
|
|
|
void MameOPN2::writeReg(uint32_t port, uint16_t addr, uint8_t data)
|
|
{
|
|
ym2612_write(chip, 0 + (int)(port) * 2, (uint8_t)addr);
|
|
ym2612_write(chip, 1 + (int)(port) * 2, data);
|
|
}
|
|
|
|
void MameOPN2::writePan(uint16_t chan, uint8_t data)
|
|
{
|
|
ym2612_write_pan(chip, (int)chan, data);
|
|
}
|
|
|
|
void MameOPN2::nativePreGenerate()
|
|
{
|
|
void *chip = this->chip;
|
|
ym2612_pre_generate(chip);
|
|
}
|
|
|
|
void MameOPN2::nativeGenerate(int16_t *frame)
|
|
{
|
|
void *chip = this->chip;
|
|
ym2612_generate_one_native(chip, frame);
|
|
}
|
|
|
|
const char *MameOPN2::emulatorName()
|
|
{
|
|
return "MAME YM2612";
|
|
}
|