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gzdoom-gles/libraries/opnmidi/opnmidi_opn2.cpp
Wohlstand 87d46ddd11 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 12:50:10 +02:00

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/*
* libOPNMIDI is a free Software MIDI synthesizer library with OPN2 (YM2612) emulation
*
* MIDI parser and player (Original code from ADLMIDI): Copyright (c) 2010-2014 Joel Yliluoma <bisqwit@iki.fi>
* OPNMIDI Library and YM2612 support: Copyright (c) 2017-2020 Vitaly Novichkov <admin@wohlnet.ru>
*
* Library is based on the ADLMIDI, a MIDI player for Linux and Windows with OPL3 emulation:
* http://iki.fi/bisqwit/source/adlmidi.html
*
* 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 3 of the License, or
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "opnmidi_opn2.hpp"
#include "opnmidi_private.hpp"
#if defined(OPNMIDI_DISABLE_NUKED_EMULATOR) && defined(OPNMIDI_DISABLE_MAME_EMULATOR) && \
defined(OPNMIDI_DISABLE_GENS_EMULATOR) && defined(OPNMIDI_DISABLE_GX_EMULATOR) && \
defined(OPNMIDI_DISABLE_NP2_EMULATOR) && defined(OPNMIDI_DISABLE_MAME_2608_EMULATOR) && \
defined(OPNMIDI_DISABLE_PMDWIN_EMULATOR)
#error "No emulators enabled. You must enable at least one emulator to use this library!"
#endif
// Nuked OPN2 emulator, Most accurate, but requires the powerful CPU
#ifndef OPNMIDI_DISABLE_NUKED_EMULATOR
#include "chips/nuked_opn2.h"
#endif
// MAME YM2612 emulator, Well-accurate and fast
#ifndef OPNMIDI_DISABLE_MAME_EMULATOR
#include "chips/mame_opn2.h"
#endif
// GENS 2.10 emulator, very outdated and inaccurate, but gives the best performance
#ifndef OPNMIDI_DISABLE_GENS_EMULATOR
#include "chips/gens_opn2.h"
#endif
// Genesis Plus GX emulator, Variant of MAME with enhancements
#ifndef OPNMIDI_DISABLE_GX_EMULATOR
#include "chips/gx_opn2.h"
#endif
// Neko Project II OPNA emulator
#ifndef OPNMIDI_DISABLE_NP2_EMULATOR
#include "chips/np2_opna.h"
#endif
// MAME YM2608 emulator
#ifndef OPNMIDI_DISABLE_MAME_2608_EMULATOR
#include "chips/mame_opna.h"
#endif
// PMDWin OPNA emulator
#ifndef OPNMIDI_DISABLE_PMDWIN_EMULATOR
#include "chips/pmdwin_opna.h"
#endif
// VGM File dumper
#ifdef OPNMIDI_MIDI2VGM
#include "chips/vgm_file_dumper.h"
#endif
static const unsigned opn2_emulatorSupport = 0
#ifndef OPNMIDI_DISABLE_NUKED_EMULATOR
| (1u << OPNMIDI_EMU_NUKED)
#endif
#ifndef OPNMIDI_DISABLE_MAME_EMULATOR
| (1u << OPNMIDI_EMU_MAME)
#endif
#ifndef OPNMIDI_DISABLE_GENS_EMULATOR
| (1u << OPNMIDI_EMU_GENS)
#endif
#ifndef OPNMIDI_DISABLE_GX_EMULATOR
| (1u << OPNMIDI_EMU_GX)
#endif
#ifndef OPNMIDI_DISABLE_NP2_EMULATOR
| (1u << OPNMIDI_EMU_NP2)
#endif
#ifndef OPNMIDI_DISABLE_MAME_2608_EMULATOR
| (1u << OPNMIDI_EMU_MAME_2608)
#endif
#ifndef OPNMIDI_DISABLE_PMDWIN_EMULATOR
| (1u << OPNMIDI_EMU_PMDWIN)
#endif
#ifdef OPNMIDI_MIDI2VGM
| (1u << OPNMIDI_VGM_DUMPER)
#endif
;
//! Check emulator availability
bool opn2_isEmulatorAvailable(int emulator)
{
return (opn2_emulatorSupport & (1u << (unsigned)emulator)) != 0;
}
//! Find highest emulator
int opn2_getHighestEmulator()
{
int emu = -1;
for(unsigned m = opn2_emulatorSupport; m > 0; m >>= 1)
++emu;
return emu;
}
//! Find lowest emulator
int opn2_getLowestEmulator()
{
int emu = -1;
unsigned m = opn2_emulatorSupport;
if(m > 0)
{
for(emu = 0; (m & 1) == 0; m >>= 1)
++emu;
}
return emu;
}
/***************************************************************
* Volume model tables *
***************************************************************/
// Mapping from MIDI volume level to OPL level value.
static const uint_fast32_t s_dmx_volume_model[128] =
{
0, 1, 3, 5, 6, 8, 10, 11,
13, 14, 16, 17, 19, 20, 22, 23,
25, 26, 27, 29, 30, 32, 33, 34,
36, 37, 39, 41, 43, 45, 47, 49,
50, 52, 54, 55, 57, 59, 60, 61,
63, 64, 66, 67, 68, 69, 71, 72,
73, 74, 75, 76, 77, 79, 80, 81,
82, 83, 84, 84, 85, 86, 87, 88,
89, 90, 91, 92, 92, 93, 94, 95,
96, 96, 97, 98, 99, 99, 100, 101,
101, 102, 103, 103, 104, 105, 105, 106,
107, 107, 108, 109, 109, 110, 110, 111,
112, 112, 113, 113, 114, 114, 115, 115,
116, 117, 117, 118, 118, 119, 119, 120,
120, 121, 121, 122, 122, 123, 123, 123,
124, 124, 125, 125, 126, 126, 127, 127,
};
static const uint_fast32_t W9X_volume_mapping_table[32] =
{
63, 63, 40, 36, 32, 28, 23, 21,
19, 17, 15, 14, 13, 12, 11, 10,
9, 8, 7, 6, 5, 5, 4, 4,
3, 3, 2, 2, 1, 1, 0, 0
};
static const uint32_t g_noteChannelsMap[6] = { 0, 1, 2, 4, 5, 6 };
static inline void getOpnChannel(size_t in_channel,
size_t &out_chip,
uint8_t &out_port,
uint32_t &out_ch)
{
out_chip = in_channel / 6;
size_t ch4 = in_channel % 6;
out_port = ((ch4 < 3) ? 0 : 1);
out_ch = static_cast<uint32_t>(ch4 % 3);
}
/***************************************************************
* Standard frequency formula *
* *************************************************************/
static inline double s_commonFreq(double tone)
{
return std::exp(0.057762265 * tone);
}
enum
{
MasterVolumeDefault = 127
};
enum
{
OPN_PANNING_LEFT = 0x80,
OPN_PANNING_RIGHT = 0x40,
OPN_PANNING_BOTH = 0xC0
};
static OpnInstMeta makeEmptyInstrument()
{
OpnInstMeta ins;
memset(&ins, 0, sizeof(OpnInstMeta));
ins.flags = OpnInstMeta::Flag_NoSound;
return ins;
}
const OpnInstMeta OPN2::m_emptyInstrument = makeEmptyInstrument();
OPN2::OPN2() :
m_regLFOSetup(0),
m_numChips(1),
m_scaleModulators(false),
m_runAtPcmRate(false),
m_softPanning(false),
m_masterVolume(MasterVolumeDefault),
m_musicMode(MODE_MIDI),
m_volumeScale(VOLUME_Generic),
m_lfoEnable(false),
m_lfoFrequency(0),
m_chipFamily(OPNChip_OPN2)
{
m_insBankSetup.volumeModel = OPN2::VOLUME_Generic;
m_insBankSetup.lfoEnable = false;
m_insBankSetup.lfoFrequency = 0;
m_insBankSetup.chipType = OPNChip_OPN2;
// Initialize blank instruments banks
m_insBanks.clear();
}
OPN2::~OPN2()
{
clearChips();
}
bool OPN2::setupLocked()
{
return (m_musicMode == MODE_CMF ||
m_musicMode == MODE_IMF ||
m_musicMode == MODE_RSXX);
}
void OPN2::writeReg(size_t chip, uint8_t port, uint8_t index, uint8_t value)
{
m_chips[chip]->writeReg(port, index, value);
}
void OPN2::writeRegI(size_t chip, uint8_t port, uint32_t index, uint32_t value)
{
m_chips[chip]->writeReg(port, static_cast<uint8_t>(index), static_cast<uint8_t>(value));
}
void OPN2::writePan(size_t chip, uint32_t index, uint32_t value)
{
m_chips[chip]->writePan(static_cast<uint16_t>(index), static_cast<uint8_t>(value));
}
void OPN2::noteOff(size_t c)
{
size_t chip;
uint8_t port;
uint32_t cc;
size_t ch4 = c % 6;
getOpnChannel(c, chip, port, cc);
writeRegI(chip, 0, 0x28, g_noteChannelsMap[ch4]);
}
void OPN2::noteOn(size_t c, double tone)
{
// Hertz range: 0..131071
double hertz = s_commonFreq(tone);
if(hertz < 0) // Avoid infinite loop
return;
double coef;
switch(m_chipFamily)
{
case OPNChip_OPN2: default:
coef = 321.88557; break;
case OPNChip_OPNA:
coef = 309.12412; break;
}
hertz *= coef;
size_t chip;
uint8_t port;
uint32_t cc;
size_t ch4 = c % 6;
getOpnChannel(c, chip, port, cc);
uint32_t octave = 0, ftone = 0, mul_offset = 0;
const OpnTimbre &adli = m_insCache[c];
//Basic range until max of octaves reaching
while((hertz >= 1023.75) && (octave < 0x3800))
{
hertz /= 2.0; // Calculate octave
octave += 0x800;
}
//Extended range, rely on frequency multiplication increment
while(hertz >= 2036.75)
{
hertz /= 2.0; // Calculate octave
mul_offset++;
}
ftone = octave + static_cast<uint32_t>(hertz + 0.5);
for(size_t op = 0; op < 4; op++)
{
uint32_t reg = adli.OPS[op].data[0];
uint16_t address = static_cast<uint16_t>(0x30 + (op * 4) + cc);
if(mul_offset > 0) // Increase frequency multiplication value
{
uint32_t dt = reg & 0xF0;
uint32_t mul = reg & 0x0F;
if((mul + mul_offset) > 0x0F)
{
mul_offset = 0;
mul = 0x0F;
}
writeRegI(chip, port, address, uint8_t(dt | (mul + mul_offset)));
}
else
{
writeRegI(chip, port, address, uint8_t(reg));
}
}
writeRegI(chip, port, 0xA4 + cc, (ftone>>8) & 0xFF);//Set frequency and octave
writeRegI(chip, port, 0xA0 + cc, ftone & 0xFF);
writeRegI(chip, 0, 0x28, 0xF0 + g_noteChannelsMap[ch4]);
}
void OPN2::touchNote(size_t c,
uint_fast32_t velocity,
uint_fast32_t channelVolume,
uint_fast32_t channelExpression,
uint8_t brightness)
{
size_t chip;
uint8_t port;
uint32_t cc;
getOpnChannel(c, chip, port, cc);
const OpnTimbre &adli = m_insCache[c];
uint_fast32_t volume = 0;
uint8_t op_vol[4] =
{
adli.OPS[OPERATOR1].data[1],
adli.OPS[OPERATOR2].data[1],
adli.OPS[OPERATOR3].data[1],
adli.OPS[OPERATOR4].data[1],
};
bool alg_do[8][4] =
{
/*
* Yeah, Operator 2 and 3 are seems swapped
* which we can see in the algorithm 4
*/
//OP1 OP3 OP2 OP4
//30 34 38 3C
{false,false,false,true},//Algorithm #0: W = 1 * 2 * 3 * 4
{false,false,false,true},//Algorithm #1: W = (1 + 2) * 3 * 4
{false,false,false,true},//Algorithm #2: W = (1 + (2 * 3)) * 4
{false,false,false,true},//Algorithm #3: W = ((1 * 2) + 3) * 4
{false,false,true, true},//Algorithm #4: W = (1 * 2) + (3 * 4)
{false,true ,true ,true},//Algorithm #5: W = (1 * (2 + 3 + 4)
{false,true ,true ,true},//Algorithm #6: W = (1 * 2) + 3 + 4
{true ,true ,true ,true},//Algorithm #7: W = 1 + 2 + 3 + 4
};
switch(m_volumeScale)
{
default:
case Synth::VOLUME_Generic:
{
volume = velocity * m_masterVolume *
channelVolume * channelExpression;
/* If the channel has arpeggio, the effective volume of
* *this* instrument is actually lower due to timesharing.
* To compensate, add extra volume that corresponds to the
* time this note is *not* heard.
* Empirical tests however show that a full equal-proportion
* increment sounds wrong. Therefore, using the square root.
*/
//volume = (int)(volume * std::sqrt( (double) ch[c].users.size() ));
const double c1 = 11.541560327111707;
const double c2 = 1.601379199767093e+02;
const uint_fast32_t minVolume = 1108075; // 8725 * 127
// The formula below: SOLVE(V=127^4 * 2^( (A-63.49999) / 8), A)
if(volume > minVolume)
{
double lv = std::log(static_cast<double>(volume));
volume = static_cast<uint_fast32_t>(lv * c1 - c2) * 2.0;
}
else
volume = 0;
}
break;
case Synth::VOLUME_NATIVE:
{
volume = velocity * channelVolume * channelExpression;
//volume = volume * m_masterVolume / (127 * 127 * 127) / 2;
volume = (volume * m_masterVolume) / 4096766;
}
break;
case Synth::VOLUME_DMX:
{
volume = (channelVolume * channelExpression * m_masterVolume) / 16129;
volume = (s_dmx_volume_model[volume] + 1) << 1;
volume = (s_dmx_volume_model[(velocity < 128) ? velocity : 127] * volume) >> 9;
if(volume > 0)
volume += 64;//OPN has 0~127 range. As 0...63 is almost full silence, but at 64 to 127 is very closed to OPL3, just add 64.
}
break;
case Synth::VOLUME_APOGEE:
{
volume = (channelVolume * channelExpression * m_masterVolume / 16129);
volume = ((64 * (velocity + 0x80)) * volume) >> 15;
//volume = ((63 * (vol + 0x80)) * Ch[MidCh].volume) >> 15;
if(volume > 0)
volume += 64;//OPN has 0~127 range. As 0...63 is almost full silence, but at 64 to 127 is very closed to OPL3, just add 64.
}
break;
case Synth::VOLUME_9X:
{
//volume = 63 - W9X_volume_mapping_table[(((vol * Ch[MidCh].volume /** Ch[MidCh].expression*/) * 127 / 16129 /*2048383*/) >> 2)];
volume = 63 - W9X_volume_mapping_table[((velocity * channelVolume * channelExpression * m_masterVolume / 2048383) >> 2)];
//volume = W9X_volume_mapping_table[vol >> 2] + volume;
if(volume > 0)
volume += 64;//OPN has 0~127 range. As 0...63 is almost full silence, but at 64 to 127 is very closed to OPL3, just add 64.
}
break;
}
if(volume > 127)
volume = 127;
uint8_t alg = adli.fbalg & 0x07;
for(uint8_t op = 0; op < 4; op++)
{
bool do_op = alg_do[alg][op] || m_scaleModulators;
uint32_t x = op_vol[op];
uint32_t vol_res = do_op ? (127 - (static_cast<uint32_t>(volume) * (127 - (x & 127))) / 127) : x;
if(brightness != 127)
{
brightness = static_cast<uint32_t>(::round(127.0 * ::sqrt((static_cast<double>(brightness)) * (1.0 / 127.0))));
if(!do_op)
vol_res = (127 - (brightness * (127 - (static_cast<uint32_t>(vol_res) & 127))) / 127);
}
writeRegI(chip, port, 0x40 + cc + (4 * op), vol_res);
}
// Correct formula (ST3, AdPlug):
// 63-((63-(instrvol))/63)*chanvol
// Reduces to (tested identical):
// 63 - chanvol + chanvol*instrvol/63
// Also (slower, floats):
// 63 + chanvol * (instrvol / 63.0 - 1)
}
void OPN2::setPatch(size_t c, const OpnTimbre &instrument)
{
size_t chip;
uint8_t port;
uint32_t cc;
getOpnChannel(c, chip, port, cc);
m_insCache[c] = instrument;
for(uint8_t d = 0; d < 7; d++)
{
for(uint8_t op = 0; op < 4; op++)
writeRegI(chip, port, 0x30 + (0x10 * d) + (op * 4) + cc, instrument.OPS[op].data[d]);
}
writeRegI(chip, port, 0xB0 + cc, instrument.fbalg);//Feedback/Algorithm
m_regLFOSens[c] = (m_regLFOSens[c] & 0xC0) | (instrument.lfosens & 0x3F);
writeRegI(chip, port, 0xB4 + cc, m_regLFOSens[c]);//Panorame and LFO bits
}
void OPN2::setPan(size_t c, uint8_t value)
{
size_t chip;
uint8_t port;
uint32_t cc;
getOpnChannel(c, chip, port, cc);
const OpnTimbre &adli = m_insCache[c];
uint8_t val = 0;
if(m_softPanning)
{
val = (OPN_PANNING_BOTH & 0xC0) | (adli.lfosens & 0x3F);
writePan(chip, c % 6, value);
writeRegI(chip, port, 0xB4 + cc, val);
}
else
{
int panning = 0;
if(value < 64 + 32) panning |= OPN_PANNING_LEFT;
if(value >= 64 - 32) panning |= OPN_PANNING_RIGHT;
val = (panning & 0xC0) | (adli.lfosens & 0x3F);
writePan(chip, c % 6, 64);
writeRegI(chip, port, 0xB4 + cc, val);
}
m_regLFOSens[c] = val;
}
void OPN2::silenceAll() // Silence all OPL channels.
{
for(size_t c = 0; c < m_numChannels; ++c)
{
noteOff(c);
touchNote(c, 0);
}
}
void OPN2::commitLFOSetup()
{
uint8_t regLFOSetup = (m_lfoEnable ? 8 : 0) | (m_lfoFrequency & 7);
m_regLFOSetup = regLFOSetup;
for(size_t chip = 0; chip < m_numChips; ++chip)
writeReg(chip, 0, 0x22, regLFOSetup);
}
void OPN2::setVolumeScaleModel(OPNMIDI_VolumeModels volumeModel)
{
switch(volumeModel)
{
case OPNMIDI_VolumeModel_AUTO://Do nothing until restart playing
break;
case OPNMIDI_VolumeModel_Generic:
m_volumeScale = OPN2::VOLUME_Generic;
break;
case OPNMIDI_VolumeModel_NativeOPN2:
m_volumeScale = OPN2::VOLUME_NATIVE;
break;
case OPNMIDI_VolumeModel_DMX:
m_volumeScale = OPN2::VOLUME_DMX;
break;
case OPNMIDI_VolumeModel_APOGEE:
m_volumeScale = OPN2::VOLUME_APOGEE;
break;
case OPNMIDI_VolumeModel_9X:
m_volumeScale = OPN2::VOLUME_9X;
break;
}
}
OPNMIDI_VolumeModels OPN2::getVolumeScaleModel()
{
switch(m_volumeScale)
{
default:
case OPN2::VOLUME_Generic:
return OPNMIDI_VolumeModel_Generic;
case OPN2::VOLUME_NATIVE:
return OPNMIDI_VolumeModel_NativeOPN2;
case OPN2::VOLUME_DMX:
return OPNMIDI_VolumeModel_DMX;
case OPN2::VOLUME_APOGEE:
return OPNMIDI_VolumeModel_APOGEE;
case OPN2::VOLUME_9X:
return OPNMIDI_VolumeModel_9X;
}
}
void OPN2::clearChips()
{
for(size_t i = 0; i < m_chips.size(); i++)
m_chips[i].reset(NULL);
m_chips.clear();
}
void OPN2::reset(int emulator, unsigned long PCM_RATE, OPNFamily family, void *audioTickHandler)
{
#if !defined(ADLMIDI_AUDIO_TICK_HANDLER)
ADL_UNUSED(audioTickHandler);
#endif
clearChips();
m_insCache.clear();
m_regLFOSens.clear();
#ifdef OPNMIDI_MIDI2VGM
if(emulator == OPNMIDI_VGM_DUMPER && (m_numChips > 2))
m_numChips = 2;// VGM Dumper can't work in multichip mode
#endif
m_chips.resize(m_numChips, AdlMIDI_SPtr<OPNChipBase>());
#ifdef OPNMIDI_MIDI2VGM
m_loopStartHook = NULL;
m_loopStartHookData = NULL;
m_loopEndHook = NULL;
m_loopEndHookData = NULL;
#endif
for(size_t i = 0; i < m_chips.size(); i++)
{
OPNChipBase *chip;
switch(emulator)
{
default:
assert(false);
abort();
#ifndef OPNMIDI_DISABLE_MAME_EMULATOR
case OPNMIDI_EMU_MAME:
chip = new MameOPN2(family);
break;
#endif
#ifndef OPNMIDI_DISABLE_NUKED_EMULATOR
case OPNMIDI_EMU_NUKED:
chip = new NukedOPN2(family);
break;
#endif
#ifndef OPNMIDI_DISABLE_GENS_EMULATOR
case OPNMIDI_EMU_GENS:
chip = new GensOPN2(family);
break;
#endif
#ifndef OPNMIDI_DISABLE_GX_EMULATOR
case OPNMIDI_EMU_GX:
chip = new GXOPN2(family);
break;
#endif
#ifndef OPNMIDI_DISABLE_NP2_EMULATOR
case OPNMIDI_EMU_NP2:
chip = new NP2OPNA<>(family);
break;
#endif
#ifndef OPNMIDI_DISABLE_MAME_2608_EMULATOR
case OPNMIDI_EMU_MAME_2608:
chip = new MameOPNA(family);
break;
#endif
#ifndef OPNMIDI_DISABLE_PMDWIN_EMULATOR
case OPNMIDI_EMU_PMDWIN:
chip = new PMDWinOPNA(family);
break;
#endif
#ifdef OPNMIDI_MIDI2VGM
case OPNMIDI_VGM_DUMPER:
chip = new VGMFileDumper(family);
if(i == 0)//Set hooks for first chip only
{
m_loopStartHook = &VGMFileDumper::loopStartHook;
m_loopStartHookData = chip;
m_loopEndHook = &VGMFileDumper::loopEndHook;
m_loopEndHookData = chip;
}
break;
#endif
}
m_chips[i].reset(chip);
chip->setChipId(static_cast<uint32_t>(i));
chip->setRate(static_cast<uint32_t>(PCM_RATE), chip->nativeClockRate());
if(m_runAtPcmRate)
chip->setRunningAtPcmRate(true);
#if defined(ADLMIDI_AUDIO_TICK_HANDLER)
chip->setAudioTickHandlerInstance(audioTickHandler);
#endif
family = chip->family();
}
m_chipFamily = family;
m_numChannels = m_numChips * 6;
m_insCache.resize(m_numChannels, m_emptyInstrument.op[0]);
m_regLFOSens.resize(m_numChannels, 0);
uint8_t regLFOSetup = (m_lfoEnable ? 8 : 0) | (m_lfoFrequency & 7);
m_regLFOSetup = regLFOSetup;
for(size_t card = 0; card < m_numChips; ++card)
{
writeReg(card, 0, 0x22, regLFOSetup);//push current LFO state
writeReg(card, 0, 0x27, 0x00); //set Channel 3 normal mode
writeReg(card, 0, 0x2B, 0x00); //Disable DAC
//Shut up all channels
writeReg(card, 0, 0x28, 0x00 ); //Note Off 0 channel
writeReg(card, 0, 0x28, 0x01 ); //Note Off 1 channel
writeReg(card, 0, 0x28, 0x02 ); //Note Off 2 channel
writeReg(card, 0, 0x28, 0x04 ); //Note Off 3 channel
writeReg(card, 0, 0x28, 0x05 ); //Note Off 4 channel
writeReg(card, 0, 0x28, 0x06 ); //Note Off 5 channel
}
silenceAll();
#ifdef OPNMIDI_MIDI2VGM
if(m_loopStartHook) // Post-initialization Loop Start hook (fix for loop edge passing clicks)
m_loopStartHook(m_loopStartHookData);
#endif
}
OPNFamily OPN2::chipFamily() const
{
return m_chipFamily;
}
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