zmusic/thirdparty/opnmidi/chips/np2_opna.cpp
Wohlstand 72c23d98a3 Update libOPNMIDI library to 1.5.0
## 1.5.0   2020-09-28
 * Drum note length expanding is now supported in real-time mode (Thanks to [Jean Pierre Cimalando](https://github.com/jpcima) for a work!)
 * Added support for OPNA chip with Neko Project II Kai YM2602 emulator usage (Thanks to [Jean Pierre Cimalando](https://github.com/jpcima) for a work!)
 * Added VGM file dumper which allows to output OPN2 commands into VGM file. (A new MIDI to VGM tool is now created with basing on libOPNMIDI)
 * Fixed an incorrect work of CC-121 (See https://github.com/Wohlstand/libADLMIDI/issues/227 for details)
 * Internality has been refactored and improved
2020-10-04 08:03:44 +02:00

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2.7 KiB
C++

/*
* Interfaces over Yamaha OPN2 (YM2612) 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 "np2_opna.h"
#include "np2/fmgen_opna.h"
#include <new>
#include <cstdio>
#include <cstdlib>
#include <cstring>
template <class ChipType>
NP2OPNA<ChipType>::NP2OPNA(OPNFamily f)
: ChipBase(f)
{
ChipType *opn = (ChipType *)std::calloc(1, sizeof(ChipType));
chip = new(opn) ChipType;
opn->Init(ChipBase::m_clock, ChipBase::m_rate);
opn->SetReg(0x29, 0x9f); // enable channels 4-6
}
template <class ChipType>
NP2OPNA<ChipType>::~NP2OPNA()
{
chip->~ChipType();
std::free(chip);
}
template <class ChipType>
void NP2OPNA<ChipType>::setRate(uint32_t rate, uint32_t clock)
{
ChipBase::setRate(rate, clock);
uint32_t chipRate = ChipBase::isRunningAtPcmRate() ? rate : ChipBase::nativeRate();
chip->SetRate(clock, chipRate, false); // implies Reset()
chip->SetReg(0x29, 0x9f); // enable channels 4-6
}
template <class ChipType>
void NP2OPNA<ChipType>::reset()
{
ChipBase::reset();
chip->Reset();
chip->SetReg(0x29, 0x9f); // enable channels 4-6
}
template <class ChipType>
void NP2OPNA<ChipType>::writeReg(uint32_t port, uint16_t addr, uint8_t data)
{
chip->SetReg((port << 8) | addr, data);
}
template <class ChipType>
void NP2OPNA<ChipType>::writePan(uint16_t chan, uint8_t data)
{
chip->SetPan(chan, data);
}
template <class ChipType>
void NP2OPNA<ChipType>::nativeGenerateN(int16_t *output, size_t frames)
{
std::memset(output, 0, 2 * frames * sizeof(output[0]));
chip->Mix(output, static_cast<int>(frames));
}
template <>
const char *NP2OPNA<FM::OPNA>::emulatorName()
{
return "Neko Project II Kai OPNA"; // git 2018-10-28 rev e1c0609
}
template <>
const char *NP2OPNA<FM::OPNB>::emulatorName()
{
return "Neko Project II Kai OPNB"; // git 2018-10-28 rev e1c0609
}
// template class NP2OPNA<FM::OPN2>;
template class NP2OPNA<FM::OPNA>;
template class NP2OPNA<FM::OPNB>;