/* 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. * */ #include "audio/softsynth/fmtowns_pc98/towns_audio.h" #include "audio/softsynth/fmtowns_pc98/towns_pc98_fmsynth.h" #include "common/endian.h" #include "common/util.h" #include "common/textconsole.h" #include "backends/audiocd/audiocd.h" class TownsAudio_WaveTable { friend class TownsAudioInterfaceInternal; friend class TownsAudio_PcmChannel; public: TownsAudio_WaveTable(); ~TownsAudio_WaveTable(); private: void readHeader(const uint8 *buffer); void readData(const uint8 *buffer); void clear(); char name[9]; int32 id; uint32 size; uint32 loopStart; uint32 loopLen; uint16 rate; uint16 rateOffs; uint16 baseNote; int8 *data; }; class TownsAudio_PcmChannel { public: TownsAudio_PcmChannel(); ~TownsAudio_PcmChannel(); void clear(); void loadData(TownsAudio_WaveTable *w); void loadData(uint8 *buffer, uint32 size); int initInstrument(uint8 ¬e, TownsAudio_WaveTable *&tables, int numTables); void keyOn(uint8 note, uint8 velo, TownsAudio_WaveTable *w); void keyOff(); void updateEnvelopeGenerator(); void setInstrument(uint8 *instr); void setLevel(uint8 lvl); void setPitch(uint32 pt); void setBalance(uint8 blc); void updateOutput(); int32 currentSampleLeft(); int32 currentSampleRight(); bool _keyPressed; bool _reserved; bool _activeKey; bool _activeEffect; bool _activeOutput; private: void setupLoop(uint32 loopStart, uint32 loopLen); void setNote(uint8 note, TownsAudio_WaveTable *w, bool stepLimit = false); void setVelo(uint8 velo); void envAttack(); void envDecay(); void envSustain(); void envRelease(); uint8 *_curInstrument; uint8 _note; uint8 _velo; uint8 _level; uint8 _tl; uint8 _panLeft; uint8 _panRight; int8 *_data; uint32 _loopStart; uint32 _loopLen; uint32 _dataEnd; uint16 _stepNote; uint16 _stepPitch; uint16 _step; uint32 _pos; uint8 _envTotalLevel; uint8 _envAttackRate; uint8 _envDecayRate; uint8 _envSustainLevel; uint8 _envSustainRate; uint8 _envReleaseRate; int16 _envStep; int16 _envCurrentLevel; EnvelopeState _envState; int8 *_extData; static const uint16 _pcmPhase1[]; static const uint16 _pcmPhase2[]; }; class TownsAudioInterfaceInternal : public TownsPC98_FmSynth { private: TownsAudioInterfaceInternal(Audio::Mixer *mixer, TownsAudioInterface *owner, TownsAudioInterfacePluginDriver *driver, bool externalMutexHandling = false); public: ~TownsAudioInterfaceInternal(); static TownsAudioInterfaceInternal *addNewRef(Audio::Mixer *mixer, TownsAudioInterface *owner, TownsAudioInterfacePluginDriver *driver, bool externalMutexHandling = false); static void releaseRef(TownsAudioInterface *owner); bool init(); int callback(int command, ...); int processCommand(int command, va_list &args); void setMusicVolume(int volume); void setSoundEffectVolume(int volume); // Defines the channels used as sound effect channels for the purpose of ScummVM GUI volume control. // The first 6 bits are the 6 fm channels. The next 8 bits are pcm channels. void setSoundEffectChanMask(int mask); private: bool assignPluginDriver(TownsAudioInterface *owner, TownsAudioInterfacePluginDriver *driver, bool externalMutexHandling = false); void removePluginDriver(TownsAudioInterface *owner); void nextTickEx(int32 *buffer, uint32 bufferSize); void timerCallbackA(); void timerCallbackB(); typedef int (TownsAudioInterfaceInternal::*TownsAudioIntfCallback)(va_list &); const TownsAudioIntfCallback *_intfOpcodes; int intf_reset(va_list &args); int intf_keyOn(va_list &args); int intf_keyOff(va_list &args); int intf_setPanPos(va_list &args); int intf_setInstrument(va_list &args); int intf_loadInstrument(va_list &args); int intf_setPitch(va_list &args); int intf_setLevel(va_list &args); int intf_chanOff(va_list &args); int intf_writeReg(va_list &args); int intf_writeRegBuffer(va_list &args); int intf_readRegBuffer(va_list &args); int intf_setTimerA(va_list &args); int intf_setTimerB(va_list &args); int intf_enableTimerA(va_list &args); int intf_enableTimerB(va_list &args); int intf_loadSamples(va_list &args); int intf_reserveEffectChannels(va_list &args); int intf_loadWaveTable(va_list &args); int intf_unloadWaveTable(va_list &args); int intf_pcmPlayEffect(va_list &args); int intf_pcmChanOff(va_list &args); int intf_pcmEffectPlaying(va_list &args); int intf_fmKeyOn(va_list &args); int intf_fmKeyOff(va_list &args); int intf_fmSetPanPos(va_list &args); int intf_fmSetInstrument(va_list &args); int intf_fmLoadInstrument(va_list &args); int intf_fmSetPitch(va_list &args); int intf_fmSetLevel(va_list &args); int intf_fmReset(va_list &args); int intf_setOutputVolume(va_list &args); int intf_resetOutputVolume(va_list &args); int intf_getOutputVolume(va_list &args); int intf_setOutputMute(va_list &args); int intf_cdaToggle(va_list &args); int intf_getOutputVolume2(va_list &args); int intf_getOutputMute(va_list &args); int intf_pcmUpdateEnvelopeGenerator(va_list &args); int intf_notImpl(va_list &args); void fmReset(); int fmKeyOn(int chan, int note, int velo); int fmKeyOff(int chan); int fmChanOff(int chan); int fmSetPanPos(int chan, int mode); int fmSetInstrument(int chan, int instrId); int fmLoadInstrument(int instrId, const uint8 *data); int fmSetPitch(int chan, int pitch); int fmSetLevel(int chan, int lvl); void bufferedWriteReg(uint8 part, uint8 regAddress, uint8 value); uint8 _fmChanPlaying; uint8 _fmChanNote[6]; int16 _fmChanPitch[6]; uint8 *_fmSaveReg[2]; uint8 *_fmInstruments; void pcmReset(); int pcmKeyOn(int chan, int note, int velo); int pcmKeyOff(int chan); int pcmChanOff(int chan); int pcmSetPanPos(int chan, int mode); int pcmSetInstrument(int chan, int instrId); int pcmLoadInstrument(int instrId, const uint8 *data); int pcmSetPitch(int chan, int pitch); int pcmSetLevel(int chan, int lvl); TownsAudio_PcmChannel *_pcmChan; uint8 _numReservedChannels; uint8 *_pcmInstruments; TownsAudio_WaveTable *_waveTables; uint8 _numWaveTables; uint32 _waveTablesTotalDataSize; void updateOutputVolume(); void updateOutputVolumeInternal(); uint8 _outputVolumeFlags; uint8 _outputLevel[16]; uint8 _outputMute[16]; bool _updateOutputVol; const float _baserate; uint32 _timerBase; uint32 _tickLength; uint32 _timer; uint16 _musicVolume; uint16 _sfxVolume; int _pcmSfxChanMask; TownsAudioInterfacePluginDriver *_drv; void *_drvOwner; bool _ready; static TownsAudioInterfaceInternal *_refInstance; static int _refCount; static const uint8 _chanFlags[]; static const uint16 _frequency[]; static const uint8 _carrier[]; static const uint8 _fmDefaultInstrument[]; }; TownsAudioInterfaceInternal::TownsAudioInterfaceInternal(Audio::Mixer *mixer, TownsAudioInterface *owner, TownsAudioInterfacePluginDriver *driver, bool externalMutexHandling) : TownsPC98_FmSynth(mixer, kTypeTowns, externalMutexHandling), _fmInstruments(0), _pcmInstruments(0), _pcmChan(0), _waveTables(0), _waveTablesTotalDataSize(0), _baserate(55125.0f / (float)mixer->getOutputRate()), _tickLength(0), _timer(0), _drv(driver), _drvOwner(owner), _pcmSfxChanMask(0), _musicVolume(Audio::Mixer::kMaxMixerVolume), _sfxVolume(Audio::Mixer::kMaxMixerVolume), _outputVolumeFlags(0), _fmChanPlaying(0), _numReservedChannels(0), _numWaveTables(0), _updateOutputVol(false), _ready(false) { #define INTCB(x) &TownsAudioInterfaceInternal::intf_##x static const TownsAudioIntfCallback intfCb[] = { // 0 INTCB(reset), INTCB(keyOn), INTCB(keyOff), INTCB(setPanPos), // 4 INTCB(setInstrument), INTCB(loadInstrument), INTCB(notImpl), INTCB(setPitch), // 8 INTCB(setLevel), INTCB(chanOff), INTCB(notImpl), INTCB(notImpl), // 12 INTCB(notImpl), INTCB(notImpl), INTCB(notImpl), INTCB(notImpl), // 16 INTCB(notImpl), INTCB(writeReg), INTCB(notImpl), INTCB(writeRegBuffer), // 20 INTCB(readRegBuffer), INTCB(setTimerA), INTCB(setTimerB), INTCB(enableTimerA), // 24 INTCB(enableTimerB), INTCB(notImpl), INTCB(notImpl), INTCB(notImpl), // 28 INTCB(notImpl), INTCB(notImpl), INTCB(notImpl), INTCB(notImpl), // 32 INTCB(loadSamples), INTCB(reserveEffectChannels), INTCB(loadWaveTable), INTCB(unloadWaveTable), // 36 INTCB(notImpl), INTCB(pcmPlayEffect), INTCB(notImpl), INTCB(pcmChanOff), // 40 INTCB(pcmEffectPlaying), INTCB(notImpl), INTCB(notImpl), INTCB(notImpl), // 44 INTCB(notImpl), INTCB(notImpl), INTCB(notImpl), INTCB(notImpl), // 48 INTCB(notImpl), INTCB(notImpl), INTCB(fmKeyOn), INTCB(fmKeyOff), // 52 INTCB(fmSetPanPos), INTCB(fmSetInstrument), INTCB(fmLoadInstrument), INTCB(notImpl), // 56 INTCB(fmSetPitch), INTCB(fmSetLevel), INTCB(fmReset), INTCB(notImpl), // 60 INTCB(notImpl), INTCB(notImpl), INTCB(notImpl), INTCB(notImpl), // 64 INTCB(notImpl), INTCB(notImpl), INTCB(notImpl), INTCB(setOutputVolume), // 68 INTCB(resetOutputVolume), INTCB(getOutputVolume), INTCB(setOutputMute), INTCB(notImpl), // 72 INTCB(notImpl), INTCB(cdaToggle), INTCB(getOutputVolume2), INTCB(getOutputMute), // 76 INTCB(notImpl), INTCB(notImpl), INTCB(notImpl), INTCB(notImpl), // 80 INTCB(pcmUpdateEnvelopeGenerator), INTCB(notImpl) }; #undef INTCB _intfOpcodes = intfCb; memset(_fmSaveReg, 0, sizeof(_fmSaveReg)); memset(_fmChanNote, 0, sizeof(_fmChanNote)); memset(_fmChanPitch, 0, sizeof(_fmChanPitch)); memset(_outputLevel, 0, sizeof(_outputLevel)); memset(_outputMute, 0, sizeof(_outputMute)); _timerBase = (uint32)(_baserate * 1000000.0f); _tickLength = 2 * _timerBase; } TownsAudioInterfaceInternal::~TownsAudioInterfaceInternal() { _ready = false; deinit(); Common::StackLock lock(_mutex); delete[] _fmSaveReg[0]; delete[] _fmSaveReg[1]; delete[] _fmInstruments; delete[] _pcmInstruments; delete[] _waveTables; delete[] _pcmChan; } TownsAudioInterfaceInternal *TownsAudioInterfaceInternal::addNewRef(Audio::Mixer *mixer, TownsAudioInterface *owner, TownsAudioInterfacePluginDriver *driver, bool externalMutexHandling) { _refCount++; if (_refCount == 1 && _refInstance == 0) _refInstance = new TownsAudioInterfaceInternal(mixer, owner, driver, externalMutexHandling); else if (_refCount < 2 || _refInstance == 0) error("TownsAudioInterfaceInternal::addNewRef(): Internal reference management failure"); else if (!_refInstance->assignPluginDriver(owner, driver, externalMutexHandling)) error("TownsAudioInterfaceInternal::addNewRef(): Plugin driver conflict"); return _refInstance; } void TownsAudioInterfaceInternal::releaseRef(TownsAudioInterface *owner) { if (!_refCount) return; _refCount--; if (_refCount) { if (_refInstance) _refInstance->removePluginDriver(owner); } else { delete _refInstance; _refInstance = 0; } } bool TownsAudioInterfaceInternal::init() { if (_ready) return true; if (!TownsPC98_FmSynth::init()) return false; _fmSaveReg[0] = new uint8[256]; _fmSaveReg[1] = new uint8[256]; _fmInstruments = new uint8[128 * 48]; _pcmInstruments = new uint8[32 * 128]; _waveTables = new TownsAudio_WaveTable[128]; _pcmChan = new TownsAudio_PcmChannel[8]; _timer = 0; setVolumeChannelMasks(-1, 0); _ready = true; callback(0); return true; } int TownsAudioInterfaceInternal::callback(int command, ...) { if (!_ready) return 1; va_list args; va_start(args, command); int res = processCommand(command, args); va_end(args); return res; } int TownsAudioInterfaceInternal::processCommand(int command, va_list &args) { if (!_ready) return 1; if (command < 0 || command > 81) return 4; Common::StackLock lock(_mutex); int res = (this->*_intfOpcodes[command])(args); return res; } void TownsAudioInterfaceInternal::setMusicVolume(int volume) { _musicVolume = CLIP(volume, 0, Audio::Mixer::kMaxMixerVolume); setVolumeIntern(_musicVolume, _sfxVolume); } void TownsAudioInterfaceInternal::setSoundEffectVolume(int volume) { _sfxVolume = CLIP(volume, 0, Audio::Mixer::kMaxMixerVolume); setVolumeIntern(_musicVolume, _sfxVolume); } void TownsAudioInterfaceInternal::setSoundEffectChanMask(int mask) { _pcmSfxChanMask = mask >> 6; mask &= 0x3f; setVolumeChannelMasks(~mask, mask); } bool TownsAudioInterfaceInternal::assignPluginDriver(TownsAudioInterface *owner, TownsAudioInterfacePluginDriver *driver, bool externalMutexHandling) { if (_refCount <= 1) return true; if (_drv) { if (driver && driver != _drv) return false; } else { Common::StackLock lock(_mutex); _drv = driver; _drvOwner = owner; _externalMutex = externalMutexHandling; } return true; } void TownsAudioInterfaceInternal::removePluginDriver(TownsAudioInterface *owner) { if (_drvOwner == owner) { Common::StackLock lock(_mutex); _drv = 0; } } void TownsAudioInterfaceInternal::nextTickEx(int32 *buffer, uint32 bufferSize) { if (!_ready) return; if (_updateOutputVol) updateOutputVolumeInternal(); for (uint32 i = 0; i < bufferSize; i++) { _timer += _tickLength; while (_timer > 0x514767) { _timer -= 0x514767; for (int ii = 0; ii < 8; ii++) _pcmChan[ii].updateOutput(); } int32 finOutL = 0; int32 finOutR = 0; for (int ii = 0; ii < 8; ii++) { if (_pcmChan[ii]._activeOutput) { int32 oL = _pcmChan[ii].currentSampleLeft(); int32 oR = _pcmChan[ii].currentSampleRight(); if ((1 << ii) & (~_pcmSfxChanMask)) { oL = (oR * _musicVolume) / Audio::Mixer::kMaxMixerVolume; oR = (oR * _musicVolume) / Audio::Mixer::kMaxMixerVolume; } if ((1 << ii) & _pcmSfxChanMask) { oL = (oL * _sfxVolume) / Audio::Mixer::kMaxMixerVolume; oR = (oR * _sfxVolume) / Audio::Mixer::kMaxMixerVolume; } finOutL += oL; finOutR += oR; if (!(_pcmChan[ii]._activeKey || _pcmChan[ii]._activeEffect)) _pcmChan[ii]._activeOutput = false; } } buffer[i << 1] += finOutL; buffer[(i << 1) + 1] += finOutR; } } void TownsAudioInterfaceInternal::timerCallbackA() { if (_drv && _ready) _drv->timerCallback(0); } void TownsAudioInterfaceInternal::timerCallbackB() { if (_ready) { if (_drv) _drv->timerCallback(1); callback(80); } } int TownsAudioInterfaceInternal::intf_reset(va_list &args) { fmReset(); pcmReset(); callback(68); return 0; } int TownsAudioInterfaceInternal::intf_keyOn(va_list &args) { int chan = va_arg(args, int); int note = va_arg(args, int); int velo = va_arg(args, int); return (chan & 0x40) ? pcmKeyOn(chan, note, velo) : fmKeyOn(chan, note, velo); } int TownsAudioInterfaceInternal::intf_keyOff(va_list &args) { int chan = va_arg(args, int); return (chan & 0x40) ? pcmKeyOff(chan) : fmKeyOff(chan); } int TownsAudioInterfaceInternal::intf_setPanPos(va_list &args) { int chan = va_arg(args, int); int mode = va_arg(args, int); return (chan & 0x40) ? pcmSetPanPos(chan, mode) : fmSetPanPos(chan, mode); } int TownsAudioInterfaceInternal::intf_setInstrument(va_list &args) { int chan = va_arg(args, int); int instrId = va_arg(args, int); return (chan & 0x40) ? pcmSetInstrument(chan, instrId) : fmSetInstrument(chan, instrId); } int TownsAudioInterfaceInternal::intf_loadInstrument(va_list &args) { int chanType = va_arg(args, int); int instrId = va_arg(args, int); uint8 *instrData = va_arg(args, uint8 *); return (chanType & 0x40) ? pcmLoadInstrument(instrId, instrData) : fmLoadInstrument(instrId, instrData); } int TownsAudioInterfaceInternal::intf_setPitch(va_list &args) { int chan = va_arg(args, int); int16 pitch = (int16)(va_arg(args, int) & 0xffff); return (chan & 0x40) ? pcmSetPitch(chan, pitch) : fmSetPitch(chan, pitch); } int TownsAudioInterfaceInternal::intf_setLevel(va_list &args) { int chan = va_arg(args, int); int lvl = va_arg(args, int); return (chan & 0x40) ? pcmSetLevel(chan, lvl) : fmSetLevel(chan, lvl); } int TownsAudioInterfaceInternal::intf_chanOff(va_list &args) { int chan = va_arg(args, int); return (chan & 0x40) ? pcmChanOff(chan) : fmChanOff(chan); } int TownsAudioInterfaceInternal::intf_writeReg(va_list &args) { int part = va_arg(args, int) ? 1 : 0; int reg = va_arg(args, int); int val = va_arg(args, int); if ((!part && reg < 0x20) || (part && reg < 0x30) || (reg > 0xb6)) return 3; bufferedWriteReg(part, reg, val); return 0; } int TownsAudioInterfaceInternal::intf_writeRegBuffer(va_list &args) { int part = va_arg(args, int) ? 1 : 0; int reg = va_arg(args, int); int val = va_arg(args, int); if ((!part && reg < 0x20) || (part && reg < 0x30) || (reg > 0xef)) return 3; _fmSaveReg[part][reg] = val; return 0; } int TownsAudioInterfaceInternal::intf_readRegBuffer(va_list &args) { int part = va_arg(args, int) ? 1 : 0; int reg = va_arg(args, int); uint8 *dst = va_arg(args, uint8 *); *dst = 0; if ((!part && reg < 0x20) || (part && reg < 0x30) || (reg > 0xef)) return 3; *dst = _fmSaveReg[part][reg]; return 0; } int TownsAudioInterfaceInternal::intf_setTimerA(va_list &args) { int enable = va_arg(args, int); int tempo = va_arg(args, int); if (enable) { bufferedWriteReg(0, 0x25, tempo & 3); bufferedWriteReg(0, 0x24, (tempo >> 2) & 0xff); bufferedWriteReg(0, 0x27, _fmSaveReg[0][0x27] | 0x05); } else { bufferedWriteReg(0, 0x27, (_fmSaveReg[0][0x27] & 0xfa) | 0x10); } return 0; } int TownsAudioInterfaceInternal::intf_setTimerB(va_list &args) { int enable = va_arg(args, int); int tempo = va_arg(args, int); if (enable) { bufferedWriteReg(0, 0x26, tempo & 0xff); bufferedWriteReg(0, 0x27, _fmSaveReg[0][0x27] | 0x0A); } else { bufferedWriteReg(0, 0x27, (_fmSaveReg[0][0x27] & 0xf5) | 0x20); } return 0; } int TownsAudioInterfaceInternal::intf_enableTimerA(va_list &args) { bufferedWriteReg(0, 0x27, _fmSaveReg[0][0x27] | 0x15); return 0; } int TownsAudioInterfaceInternal::intf_enableTimerB(va_list &args) { bufferedWriteReg(0, 0x27, _fmSaveReg[0][0x27] | 0x2a); return 0; } int TownsAudioInterfaceInternal::intf_loadSamples(va_list &args) { uint32 dest = va_arg(args, uint32); int size = va_arg(args, int); uint8 *src = va_arg(args, uint8*); if (dest >= 65536 || size == 0 || size > 65536) return 3; if (size + dest > 65536) return 5; int dwIndex = _numWaveTables - 1; for (uint32 t = _waveTablesTotalDataSize; dwIndex && (dest < t); dwIndex--) t -= _waveTables[dwIndex].size; TownsAudio_WaveTable *s = &_waveTables[dwIndex]; _waveTablesTotalDataSize -= s->size; s->size = size; s->readData(src); _waveTablesTotalDataSize += s->size; return 0; } int TownsAudioInterfaceInternal::intf_reserveEffectChannels(va_list &args) { int numChan = va_arg(args, int); if (numChan > 8) return 3; if ((numChan << 13) + _waveTablesTotalDataSize > 65536) return 5; if (numChan == _numReservedChannels) return 0; if (numChan < _numReservedChannels) { int c = 8 - _numReservedChannels; for (int i = numChan; i; i--) _pcmChan[c--]._activeEffect = false; } else { int c = 7 - _numReservedChannels; for (int i = numChan - _numReservedChannels; i; i--) { _pcmChan[c]._keyPressed = false; _pcmChan[c--]._activeKey = false; } } _numReservedChannels = numChan; for (int i = 0; i < 8; i++) _pcmChan[i]._reserved = i >= (8 - _numReservedChannels) ? true : false; return 0; } int TownsAudioInterfaceInternal::intf_loadWaveTable(va_list &args) { uint8 *data = va_arg(args, uint8 *); if (_numWaveTables > 127) return 3; TownsAudio_WaveTable w; w.readHeader(data); if (!w.size) return 6; if (_waveTablesTotalDataSize + w.size > 65504) return 5; for (int i = 0; i < _numWaveTables; i++) { if (_waveTables[i].id == w.id) return 10; } TownsAudio_WaveTable *s = &_waveTables[_numWaveTables++]; s->readHeader(data); _waveTablesTotalDataSize += s->size; callback(32, _waveTablesTotalDataSize, s->size, data + 32); return 0; } int TownsAudioInterfaceInternal::intf_unloadWaveTable(va_list &args) { int id = va_arg(args, int); if (id == -1) { for (int i = 0; i < 128; i++) _waveTables[i].clear(); _numWaveTables = 0; _waveTablesTotalDataSize = 0; } else { if (_waveTables) { for (int i = 0; i < _numWaveTables; i++) { if (_waveTables[i].id == id) { _numWaveTables--; _waveTablesTotalDataSize -= _waveTables[i].size; _waveTables[i].clear(); for (; i < _numWaveTables; i++) memcpy(&_waveTables[i], &_waveTables[i + 1], sizeof(TownsAudio_WaveTable)); return 0; } return 9; } } } return 0; } int TownsAudioInterfaceInternal::intf_pcmPlayEffect(va_list &args) { int chan = va_arg(args, int); int note = va_arg(args, int); int velo = va_arg(args, int); uint8 *data = va_arg(args, uint8 *); if (chan < 0x40 || chan > 0x47) return 1; if (note & 0x80 || velo & 0x80) return 3; chan -= 0x40; if (!_pcmChan[chan]._reserved) return 7; if (_pcmChan[chan]._activeEffect) return 2; TownsAudio_WaveTable w; w.readHeader(data); if (w.size < (w.loopStart + w.loopLen)) return 13; if (!w.size) return 6; TownsAudio_PcmChannel *p = &_pcmChan[chan]; p->loadData(data + 32, w.size); p->keyOn(note, velo, &w); return 0; } int TownsAudioInterfaceInternal::intf_pcmChanOff(va_list &args) { int chan = va_arg(args, int); pcmChanOff(chan); return 0; } int TownsAudioInterfaceInternal::intf_pcmEffectPlaying(va_list &args) { int chan = va_arg(args, int); if (chan < 0x40 || chan > 0x47) return 1; chan -= 0x40; return _pcmChan[chan]._activeEffect ? 1 : 0; } int TownsAudioInterfaceInternal::intf_fmKeyOn(va_list &args) { int chan = va_arg(args, int); int note = va_arg(args, int); int velo = va_arg(args, int); return fmKeyOn(chan, note, velo); } int TownsAudioInterfaceInternal::intf_fmKeyOff(va_list &args) { int chan = va_arg(args, int); return fmKeyOff(chan); } int TownsAudioInterfaceInternal::intf_fmSetPanPos(va_list &args) { int chan = va_arg(args, int); int mode = va_arg(args, int); return fmSetPanPos(chan, mode); } int TownsAudioInterfaceInternal::intf_fmSetInstrument(va_list &args) { int chan = va_arg(args, int); int instrId = va_arg(args, int); return fmSetInstrument(chan, instrId); } int TownsAudioInterfaceInternal::intf_fmLoadInstrument(va_list &args) { int instrId = va_arg(args, int); uint8 *instrData = va_arg(args, uint8 *); return fmLoadInstrument(instrId, instrData); } int TownsAudioInterfaceInternal::intf_fmSetPitch(va_list &args) { int chan = va_arg(args, int); uint16 freq = va_arg(args, int) & 0xffff; return fmSetPitch(chan, freq); } int TownsAudioInterfaceInternal::intf_fmSetLevel(va_list &args) { int chan = va_arg(args, int); int lvl = va_arg(args, int); return fmSetLevel(chan, lvl); } int TownsAudioInterfaceInternal::intf_fmReset(va_list &args) { fmReset(); return 0; } int TownsAudioInterfaceInternal::intf_setOutputVolume(va_list &args) { int chanType = va_arg(args, int); int left = va_arg(args, int); int right = va_arg(args, int); if (left & 0xff80 || right & 0xff80) return 3; static const uint8 flags[] = { 0x0C, 0x30, 0x40, 0x80 }; uint8 chan = (chanType & 0x40) ? 8 : 12; chanType &= 3; left = (left & 0x7e) >> 1; right = (right & 0x7e) >> 1; if (chan == 12) _outputVolumeFlags |= flags[chanType]; else _outputVolumeFlags &= ~flags[chanType]; if (chanType > 1) { _outputLevel[chan + chanType] = left; _outputMute[chan + chanType] = 0; } else { if (chanType == 0) chan -= 8; _outputLevel[chan] = left; _outputLevel[chan + 1] = right; _outputMute[chan] = _outputMute[chan + 1] = 0; } updateOutputVolume(); return 0; } int TownsAudioInterfaceInternal::intf_resetOutputVolume(va_list &args) { memset(_outputLevel, 0, sizeof(_outputLevel)); _outputVolumeFlags = 0; updateOutputVolume(); return 0; } int TownsAudioInterfaceInternal::intf_getOutputVolume(va_list &args) { int chanType = va_arg(args, int); int *left = va_arg(args, int*); int *right = va_arg(args, int*); uint8 chan = (chanType & 0x40) ? 8 : 12; chanType &= 3; if (chanType > 1) { *left = _outputLevel[chan + chanType] & 0x3f; } else { if (chanType == 0) chan -= 8; *left = _outputLevel[chan] & 0x3f; *right = _outputLevel[chan + 1] & 0x3f; } return 0; } int TownsAudioInterfaceInternal::intf_setOutputMute(va_list &args) { int flags = va_arg(args, int); _outputVolumeFlags = flags; uint8 mute = flags & 3; uint8 f = flags & 0xff; memset(_outputMute, 1, 8); if (mute & 2) memset(&_outputMute[12], 1, 4); if (mute & 1) memset(&_outputMute[8], 1, 4); _outputMute[(f < 0x80) ? 11 : 15] = 0; f += f; _outputMute[(f < 0x80) ? 10 : 14] = 0; f += f; _outputMute[(f < 0x80) ? 8 : 12] = 0; f += f; _outputMute[(f < 0x80) ? 9 : 13] = 0; f += f; _outputMute[(f < 0x80) ? 0 : 4] = 0; f += f; _outputMute[(f < 0x80) ? 1 : 5] = 0; f += f; updateOutputVolume(); return 0; } int TownsAudioInterfaceInternal::intf_cdaToggle(va_list &args) { //int mode = va_arg(args, int); //_unkMask = mode ? 0x7f : 0x3f; return 0; } int TownsAudioInterfaceInternal::intf_getOutputVolume2(va_list &args) { return 0; } int TownsAudioInterfaceInternal::intf_getOutputMute (va_list &args) { return 0; } int TownsAudioInterfaceInternal::intf_pcmUpdateEnvelopeGenerator(va_list &args) { for (int i = 0; i < 8; i++) _pcmChan[i].updateEnvelopeGenerator(); return 0; } int TownsAudioInterfaceInternal::intf_notImpl(va_list &args) { return 4; } void TownsAudioInterfaceInternal::fmReset() { TownsPC98_FmSynth::reset(); _fmChanPlaying = 0; memset(_fmChanNote, 0, sizeof(_fmChanNote)); memset(_fmChanPitch, 0, sizeof(_fmChanPitch)); memset(_fmSaveReg[0], 0, 240); memset(&_fmSaveReg[0][240], 0x7f, 16); memset(_fmSaveReg[1], 0, 256); memset(&_fmSaveReg[1][240], 0x7f, 16); _fmSaveReg[0][243] = _fmSaveReg[0][247] = _fmSaveReg[0][251] = _fmSaveReg[0][255] = _fmSaveReg[1][243] = _fmSaveReg[1][247] = _fmSaveReg[1][251] = _fmSaveReg[1][255] = 0xff; for (int i = 0; i < 128; i++) fmLoadInstrument(i, _fmDefaultInstrument); bufferedWriteReg(0, 0x21, 0); bufferedWriteReg(0, 0x2C, 0x80); bufferedWriteReg(0, 0x2B, 0); bufferedWriteReg(0, 0x27, 0x30); for (int i = 0; i < 6; i++) { fmKeyOff(i); fmSetInstrument(i, 0); fmSetLevel(i, 127); } } int TownsAudioInterfaceInternal::fmKeyOn(int chan, int note, int velo) { if (chan > 5) return 1; if (note < 12 || note > 107 || (velo & 0x80)) return 3; if (_fmChanPlaying & _chanFlags[chan]) return 2; _fmChanPlaying |= _chanFlags[chan]; note -= 12; _fmChanNote[chan] = note; int16 pitch = _fmChanPitch[chan]; uint8 part = chan > 2 ? 1 : 0; if (chan > 2) chan -= 3; int frq = 0; uint8 bl = 0; if (note) { frq = _frequency[(note - 1) % 12]; bl = (note - 1) / 12; } else { frq = 616; } frq += pitch; if (frq < 616) { if (!bl) { frq = 616; } else { frq += 616; --bl; } } else if (frq > 1232) { if (bl == 7) { frq = 15500; } else { frq -= 616; ++bl; } } frq |= (bl << 11); bufferedWriteReg(part, chan + 0xa4, (frq >> 8) & 0xff); bufferedWriteReg(part, chan + 0xa0, frq & 0xff); velo = (velo >> 2) + 96; uint16 c = _carrier[_fmSaveReg[part][0xb0 + chan] & 7]; _fmSaveReg[part][0xe0 + chan] = velo; for (uint8 reg = 0x40 + chan; reg < 0x50; reg += 4) { c += c; if (c & 0x100) { c &= 0xff; bufferedWriteReg(part, reg, (((((((_fmSaveReg[part][0x80 + reg] ^ 0x7f) * velo) >> 7) + 1) * _fmSaveReg[part][0xd0 + chan]) >> 7) + 1) ^ 0x7f); } } uint8 v = chan; if (part) v |= 4; for (uint8 reg = 0x80 + chan; reg < 0x90; reg += 4) writeReg(part, reg, _fmSaveReg[part][reg] | 0x0f); writeReg(0, 0x28, v); for (uint8 reg = 0x80 + chan; reg < 0x90; reg += 4) writeReg(part, reg, _fmSaveReg[part][reg]); bufferedWriteReg(0, 0x28, v | 0xf0); return 0; } int TownsAudioInterfaceInternal::fmKeyOff(int chan) { if (chan > 5) return 1; _fmChanPlaying &= ~_chanFlags[chan]; if (chan > 2) chan++; bufferedWriteReg(0, 0x28, chan); return 0; } int TownsAudioInterfaceInternal::fmChanOff(int chan) { if (chan > 5) return 1; _fmChanPlaying &= ~_chanFlags[chan]; uint8 part = chan > 2 ? 1 : 0; if (chan > 2) chan -= 3; for (uint8 reg = 0x80 + chan; reg < 0x90; reg += 4) writeReg(part, reg, _fmSaveReg[part][reg] | 0x0f); if (part) chan += 4; writeReg(0, 0x28, chan); return 0; } int TownsAudioInterfaceInternal::fmSetPanPos(int chan, int value) { if (chan > 5) return 1; uint8 part = chan > 2 ? 1 : 0; if (chan > 2) chan -= 3; if (value > 0x40) value = 0x40; else if (value < 0x40) value = 0x80; else value = 0xC0; bufferedWriteReg(part, 0xb4 + chan, (_fmSaveReg[part][0xb4 + chan] & 0x3f) | value); return 0; } int TownsAudioInterfaceInternal::fmSetInstrument(int chan, int instrId) { if (chan > 5) return 1; if (instrId > 127) return 3; uint8 part = chan > 2 ? 1 : 0; if (chan > 2) chan -= 3; uint8 *src = &_fmInstruments[instrId * 48 + 8]; uint16 c = _carrier[src[24] & 7]; uint8 reg = 0x30 + chan; for (; reg < 0x40; reg += 4) bufferedWriteReg(part, reg, *src++); for (; reg < 0x50; reg += 4) { uint8 v = *src++; _fmSaveReg[part][0x80 + reg] = _fmSaveReg[part][reg] = v; c += c; if (c & 0x100) { c &= 0xff; v = 127; } writeReg(part, reg, v); } for (; reg < 0x90; reg += 4) bufferedWriteReg(part, reg, *src++); reg += 0x20; bufferedWriteReg(part, reg, *src++); uint8 v = *src++; reg += 4; if (v < 64) v |= (_fmSaveReg[part][reg] & 0xc0); bufferedWriteReg(part, reg, v); return 0; } int TownsAudioInterfaceInternal::fmLoadInstrument(int instrId, const uint8 *data) { if (instrId > 127) return 3; assert(data); memcpy(&_fmInstruments[instrId * 48], data, 48); return 0; } int TownsAudioInterfaceInternal::fmSetPitch(int chan, int pitch) { if (chan > 5) return 1; uint8 bl = _fmChanNote[chan]; int frq = 0; if (pitch < 0) { if (bl) { if (pitch < -8008) pitch = -8008; pitch *= -1; pitch /= 13; frq = _frequency[(bl - 1) % 12] - pitch; bl = (bl - 1) / 12; _fmChanPitch[chan] = -pitch; if (frq < 616) { if (bl) { frq += 616; bl--; } else { frq = 616; bl = 0; } } } else { frq = 616; bl = 0; } } else if (pitch > 0) { if (bl < 96) { if (pitch > 8008) pitch = 8008; pitch /= 13; if (bl) { frq = _frequency[(bl - 1) % 12] + pitch; bl = (bl - 1) / 12; } else { frq = 616; bl = 0; } _fmChanPitch[chan] = pitch; if (frq > 1232) { if (bl < 7) { frq -= 616; bl++; } else { frq = 1164; bl = 7; } } else { if (bl >= 7 && frq > 1164) frq = 1164; } } else { frq = 1164; bl = 7; } } else { _fmChanPitch[chan] = 0; if (bl) { frq = _frequency[(bl - 1) % 12]; bl = (bl - 1) / 12; } else { frq = 616; bl = 0; } } uint8 part = chan > 2 ? 1 : 0; if (chan > 2) chan -= 3; frq |= (bl << 11); bufferedWriteReg(part, chan + 0xa4, (frq >> 8)); bufferedWriteReg(part, chan + 0xa0, (frq & 0xff)); return 0; } int TownsAudioInterfaceInternal::fmSetLevel(int chan, int lvl) { if (chan > 5) return 1; if (lvl > 127) return 3; uint8 part = chan > 2 ? 1 : 0; if (chan > 2) chan -= 3; uint16 c = _carrier[_fmSaveReg[part][0xb0 + chan] & 7]; _fmSaveReg[part][0xd0 + chan] = lvl; for (uint8 reg = 0x40 + chan; reg < 0x50; reg += 4) { c += c; if (c & 0x100) { c &= 0xff; bufferedWriteReg(part, reg, (((((((_fmSaveReg[part][0x80 + reg] ^ 0x7f) * lvl) >> 7) + 1) * _fmSaveReg[part][0xe0 + chan]) >> 7) + 1) ^ 0x7f); } } return 0; } void TownsAudioInterfaceInternal::bufferedWriteReg(uint8 part, uint8 regAddress, uint8 value) { _fmSaveReg[part][regAddress] = value; writeReg(part, regAddress, value); } void TownsAudioInterfaceInternal::pcmReset() { _numReservedChannels = 0; for (int i = 0; i < 8; i++) _pcmChan[i].clear(); memset(_pcmInstruments, 0, 128 * 32); static uint8 name[] = { 0x4E, 0x6F, 0x20, 0x44, 0x61, 0x74, 0x61, 0x21 }; for (int i = 0; i < 32; i++) memcpy(_pcmInstruments + i * 128, name, 8); for (int i = 0; i < 128; i++) _waveTables[i].clear(); _numWaveTables = 0; _waveTablesTotalDataSize = 0; for (int i = 0x40; i < 0x48; i++) { pcmSetInstrument(i, 0); pcmSetLevel(i, 127); } } int TownsAudioInterfaceInternal::pcmKeyOn(int chan, int note, int velo) { if (chan < 0x40 || chan > 0x47) return 1; if (note & 0x80 || velo & 0x80) return 3; chan -= 0x40; uint8 noteT = note; TownsAudio_PcmChannel *p = &_pcmChan[chan]; if (p->_reserved || p->_keyPressed) return 2; TownsAudio_WaveTable *w = _waveTables; int res = p->initInstrument(noteT, w, _numWaveTables); if (res) return res; p->loadData(w); p->keyOn(noteT, velo, w); return 0; } int TownsAudioInterfaceInternal::pcmKeyOff(int chan) { if (chan < 0x40 || chan > 0x47) return 1; chan -= 0x40; _pcmChan[chan].keyOff(); return 0; } int TownsAudioInterfaceInternal::pcmChanOff(int chan) { if (chan < 0x40 || chan > 0x47) return 1; chan -= 0x40; _pcmChan[chan]._keyPressed = _pcmChan[chan]._activeEffect = _pcmChan[chan]._activeKey = _pcmChan[chan]._activeOutput = false; return 0; } int TownsAudioInterfaceInternal::pcmSetPanPos(int chan, int mode) { if (chan > 0x47) return 1; if (mode & 0x80) return 3; chan -= 0x40; uint8 blc = 0x77; if (mode > 64) { mode -= 64; blc = ((blc ^ (mode >> 3)) + (mode << 4)) & 0xff; } else if (mode < 64) { mode = (mode >> 3) ^ 7; blc = ((119 + mode) ^ (mode << 4)) & 0xff; } _pcmChan[chan].setBalance(blc); return 0; } int TownsAudioInterfaceInternal::pcmSetInstrument(int chan, int instrId) { if (chan > 0x47) return 1; if (instrId > 31) return 3; chan -= 0x40; _pcmChan[chan].setInstrument(&_pcmInstruments[instrId * 128]); return 0; } int TownsAudioInterfaceInternal::pcmLoadInstrument(int instrId, const uint8 *data) { if (instrId > 31) return 3; assert(data); memcpy(&_pcmInstruments[instrId * 128], data, 128); return 0; } int TownsAudioInterfaceInternal::pcmSetPitch(int chan, int pitch) { if (chan > 0x47) return 1; if (pitch < -8192 || pitch > 8191) return 3; chan -= 0x40; TownsAudio_PcmChannel *p = &_pcmChan[chan]; uint32 pts = 0x4000; if (pitch < 0) pts = (0x20000000 / (-pitch + 0x2001)) >> 2; else if (pitch > 0) pts = (((pitch + 0x2001) << 16) / 0x2000) >> 2; p->setPitch(pts); return 0; } int TownsAudioInterfaceInternal::pcmSetLevel(int chan, int lvl) { if (chan > 0x47) return 1; if (lvl & 0x80) return 3; chan -= 0x40; _pcmChan[chan].setLevel(lvl); return 0; } void TownsAudioInterfaceInternal::updateOutputVolume() { // Avoid calls to g_system->getAudioCDManager() functions from the main thread // since this can cause mutex lockups. _updateOutputVol = true; } void TownsAudioInterfaceInternal::updateOutputVolumeInternal() { if (!_ready) return; // FM Towns seems to support volumes of 0 - 63 for each channel. // We recalculate sane values for our 0 to 255 volume range and // balance values for our -128 to 127 volume range // CD-AUDIO uint32 maxVol = MAX(_outputLevel[12] * (_outputMute[12] ^ 1), _outputLevel[13] * (_outputMute[13] ^ 1)); int volume = (int)(((float)(maxVol * 255) / 63.0f)); int balance = maxVol ? (int)( ( ((int)_outputLevel[13] * (_outputMute[13] ^ 1) - _outputLevel[12] * (_outputMute[12] ^ 1)) * 127) / (float)maxVol) : 0; g_system->getAudioCDManager()->setVolume(volume); g_system->getAudioCDManager()->setBalance(balance); _updateOutputVol = false; } TownsAudioInterfaceInternal *TownsAudioInterfaceInternal::_refInstance = 0; int TownsAudioInterfaceInternal::_refCount = 0; const uint8 TownsAudioInterfaceInternal::_chanFlags[] = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 }; const uint16 TownsAudioInterfaceInternal::_frequency[] = { 0x028C, 0x02B4, 0x02DC, 0x030A, 0x0338, 0x0368, 0x039C, 0x03D4, 0x040E, 0x044A, 0x048C, 0x04D0 }; const uint8 TownsAudioInterfaceInternal::_carrier[] = { 0x10, 0x10, 0x10, 0x10, 0x30, 0x70, 0x70, 0xF0 }; const uint8 TownsAudioInterfaceInternal::_fmDefaultInstrument[] = { 0x45, 0x4C, 0x45, 0x50, 0x49, 0x41, 0x4E, 0x4F, 0x01, 0x0A, 0x02, 0x01, 0x1E, 0x32, 0x05, 0x00, 0x9C, 0xDC, 0x9C, 0xDC, 0x07, 0x03, 0x14, 0x08, 0x00, 0x03, 0x05, 0x05, 0x55, 0x45, 0x27, 0xA7, 0x04, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; TownsAudio_PcmChannel::TownsAudio_PcmChannel() { _extData = 0; clear(); } TownsAudio_PcmChannel::~TownsAudio_PcmChannel() { clear(); } void TownsAudio_PcmChannel::clear() { _curInstrument = 0; _note = _tl = _level = _velo = 0; _data = 0; _dataEnd = 0; _loopLen = 0; _pos = 0; _loopStart = 0; _step = 0; _stepNote = 0x4000; _stepPitch = 0x4000; _panLeft = _panRight = 7; _envTotalLevel = _envAttackRate = _envDecayRate = _envSustainLevel = _envSustainRate = _envReleaseRate = 0; _envStep = _envCurrentLevel = 0; _envState = kEnvReady; _activeKey = _activeEffect = _activeOutput = _keyPressed = _reserved = false; delete[] _extData; _extData = 0; } void TownsAudio_PcmChannel::loadData(TownsAudio_WaveTable *w) { _data = w->data; _dataEnd = w->size << 11; _pos = 0; } void TownsAudio_PcmChannel::loadData(uint8 *buffer, uint32 size) { delete[] _extData; _extData = new int8[size]; int8 *src = (int8 *)buffer; int8 *dst = _extData; for (uint32 i = 0; i < size; i++) *dst++ = *src & 0x80 ? (*src++ & 0x7f) : -*src++; _data = _extData; _dataEnd = size << 11; _pos = 0; } int TownsAudio_PcmChannel::initInstrument(uint8 ¬e, TownsAudio_WaveTable *&tables, int numTables) { int i = 0; for (; i < 8; i++) { if (note <= _curInstrument[16 + 2 * i]) break; } if (i == 8) return 8; uint8 *d = &_curInstrument[(i << 3) + 64]; _envTotalLevel = d[0]; _envAttackRate = d[1]; _envDecayRate = d[2]; _envSustainLevel = d[3]; _envSustainRate = d[4]; _envReleaseRate = d[5]; _envStep = 0; note += d[6]; int32 id = (int32)READ_LE_UINT32(&_curInstrument[i * 4 + 32]); for (i = 0; i < numTables; i++) { if (id == tables[i].id) break; } if (i == numTables) return 9; tables = &tables[i]; return 0; } void TownsAudio_PcmChannel::keyOn(uint8 note, uint8 velo, TownsAudio_WaveTable *w) { setupLoop(w->loopLen ? w->loopStart : w->size, w->loopLen); setNote(note, w, _reserved); setVelo(velo); if (_reserved) _activeEffect = true; else _keyPressed = _activeKey = true; _activeOutput = true; } void TownsAudio_PcmChannel::keyOff() { _keyPressed = false; envRelease(); } void TownsAudio_PcmChannel::updateEnvelopeGenerator() { if (!_envCurrentLevel) { _activeKey = false; _envState = kEnvReady; } if (!_activeKey) return; switch (_envState) { case kEnvAttacking: if (((_envCurrentLevel + _envStep) >> 8) > _envTotalLevel) { envDecay(); return; } else { _envCurrentLevel += _envStep; } break; case kEnvDecaying: if (((_envCurrentLevel - _envStep) >> 8) < _envSustainLevel) { envSustain(); return; } else { _envCurrentLevel -= _envStep; } break; case kEnvSustaining: case kEnvReleasing: _envCurrentLevel -= _envStep; if (_envCurrentLevel <= 0) _envCurrentLevel = 0; break; default: break; } _tl = (_envCurrentLevel >> 8) << 1; } void TownsAudio_PcmChannel::setInstrument(uint8 *instr) { _curInstrument = instr; } void TownsAudio_PcmChannel::setLevel(uint8 lvl) { if (_reserved) { _velo = lvl; _tl = lvl << 1; } else { int32 t = _envStep * lvl; if (_level) t /= _level; _envStep = t; t = _envCurrentLevel * lvl; if (_level) t /= _level; _envCurrentLevel = t; _level = lvl; _tl = _envCurrentLevel >> 8; } } void TownsAudio_PcmChannel::setPitch(uint32 pt) { _stepPitch = pt & 0xffff; _step = (_stepNote * _stepPitch) >> 14; // if (_pcmChanUnkFlag & _chanFlags[chan]) // unk[chan] = (((p->step * 1000) << 11) / 98) / 20833; /*else*/ if (_activeEffect && (_step > 2048)) _step = 2048; } void TownsAudio_PcmChannel::setBalance(uint8 blc) { _panLeft = blc & 0x0f; _panRight = blc >> 4; } void TownsAudio_PcmChannel::updateOutput() { if (_activeKey || _activeEffect) { _pos += _step; if (_pos >= _dataEnd) { if (_loopStart != _dataEnd) { _pos = _loopStart; _dataEnd = _loopLen; } else { _pos = 0; _activeKey = _activeEffect = false; } } } } int32 TownsAudio_PcmChannel::currentSampleLeft() { return (_activeOutput && _panLeft) ? (((_data[_pos >> 11] * _tl) * _panLeft) >> 3) : 0; } int32 TownsAudio_PcmChannel::currentSampleRight() { return (_activeOutput && _panRight) ? (((_data[_pos >> 11] * _tl) * _panRight) >> 3) : 0; } void TownsAudio_PcmChannel::setupLoop(uint32 loopStart, uint32 loopLen) { _loopStart = loopStart << 11; _loopLen = loopLen << 11; } void TownsAudio_PcmChannel::setNote(uint8 note, TownsAudio_WaveTable *w, bool stepLimit) { _note = note; int8 diff = _note - w->baseNote; uint16 r = w->rate + w->rateOffs; uint16 bl = 0; uint32 s = 0; if (diff < 0) { diff *= -1; bl = diff % 12; diff /= 12; s = (r >> diff); if (bl) s = (s * _pcmPhase2[bl]) >> 16; } else if (diff > 0) { bl = diff % 12; diff /= 12; s = (r << diff); if (bl) s += ((s * _pcmPhase1[bl]) >> 16); } else { s = r; } _stepNote = s & 0xffff; _step = (s * _stepPitch) >> 14; if (stepLimit && _step > 2048) _step = 2048; } void TownsAudio_PcmChannel::setVelo(uint8 velo) { if (_reserved) { _velo = velo; _tl = velo << 1; } else { _velo = velo; uint32 lvl = _level * _velo; _envTotalLevel = ((_envTotalLevel * lvl) >> 14) & 0xff; _envSustainLevel = ((_envSustainLevel * lvl) >> 14) & 0xff; envAttack(); _tl = (_envCurrentLevel >> 8) << 1; } } void TownsAudio_PcmChannel::envAttack() { _envState = kEnvAttacking; int16 t = _envTotalLevel << 8; if (_envAttackRate == 127) { _envCurrentLevel = _envStep = 0; } else if (_envAttackRate) { _envStep = t / _envAttackRate; _envCurrentLevel = 1; } else { _envCurrentLevel = t; envDecay(); } } void TownsAudio_PcmChannel::envDecay() { _envState = kEnvDecaying; int16 t = _envTotalLevel - _envSustainLevel; if (t < 0 || _envDecayRate == 127) { _envStep = 0; } else if (_envDecayRate) { _envStep = (t << 8) / _envDecayRate; } else { _envCurrentLevel = _envSustainLevel << 8; envSustain(); } } void TownsAudio_PcmChannel::envSustain() { _envState = kEnvSustaining; if (_envSustainLevel && _envSustainRate) _envStep = (_envSustainRate == 127) ? 0 : (_envCurrentLevel / _envSustainRate) >> 1; else _envStep = _envCurrentLevel = 1; } void TownsAudio_PcmChannel::envRelease() { _envState = kEnvReleasing; if (_envReleaseRate == 127) _envStep = 0; else if (_envReleaseRate) _envStep = _envCurrentLevel / _envReleaseRate; else _envStep = _envCurrentLevel = 1; } const uint16 TownsAudio_PcmChannel::_pcmPhase1[] = { 0x879B, 0x0F37, 0x1F58, 0x306E, 0x4288, 0x55B6, 0x6A08, 0x7F8F, 0x965E, 0xAE88, 0xC882, 0xE341 }; const uint16 TownsAudio_PcmChannel::_pcmPhase2[] = { 0xFEFE, 0xF1A0, 0xE411, 0xD744, 0xCB2F, 0xBFC7, 0xB504, 0xAAE2, 0xA144, 0x9827, 0x8FAC }; TownsAudio_WaveTable::TownsAudio_WaveTable() { data = 0; clear(); } TownsAudio_WaveTable::~TownsAudio_WaveTable() { clear(); } void TownsAudio_WaveTable::readHeader(const uint8 *buffer) { memcpy(name, buffer, 8); name[8] = 0; id = READ_LE_UINT32(&buffer[8]); size = READ_LE_UINT32(&buffer[12]); loopStart = READ_LE_UINT32(&buffer[16]); loopLen = READ_LE_UINT32(&buffer[20]); rate = READ_LE_UINT16(&buffer[24]); rateOffs = READ_LE_UINT16(&buffer[26]); baseNote = READ_LE_UINT32(&buffer[28]); } void TownsAudio_WaveTable::readData(const uint8 *buffer) { if (!size) return; delete[] data; data = new int8[size]; const int8 *src = (const int8 *)buffer; int8 *dst = data; for (uint32 i = 0; i < size; i++) *dst++ = *src & 0x80 ? (*src++ & 0x7f) : -*src++; } void TownsAudio_WaveTable::clear() { name[0] = name[8] = 0; id = -1; size = 0; loopStart = 0; loopLen = 0; rate = 0; rateOffs = 0; baseNote = 0; delete[] data; data = 0; } TownsAudioInterface::TownsAudioInterface(Audio::Mixer *mixer, TownsAudioInterfacePluginDriver *driver, bool externalMutexHandling) { _intf = TownsAudioInterfaceInternal::addNewRef(mixer, this, driver, externalMutexHandling); } TownsAudioInterface::~TownsAudioInterface() { TownsAudioInterfaceInternal::releaseRef(this); _intf = 0; } bool TownsAudioInterface::init() { return _intf->init(); } int TownsAudioInterface::callback(int command, ...) { va_list args; va_start(args, command); int res = _intf->processCommand(command, args); va_end(args); return res; } void TownsAudioInterface::setMusicVolume(int volume) { _intf->setMusicVolume(volume); } void TownsAudioInterface::setSoundEffectVolume(int volume) { _intf->setSoundEffectVolume(volume); } void TownsAudioInterface::setSoundEffectChanMask(int mask) { _intf->setSoundEffectChanMask(mask); }