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/*
* ModChannel.cpp
* --------------
* Purpose: Module Channel header class and helpers
* Notes : (currently none)
* Authors: OpenMPT Devs
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
*/
#include "stdafx.h"
#include "Sndfile.h"
#include "ModChannel.h"
#include "tuning.h"
OPENMPT_NAMESPACE_BEGIN
void ModChannel::Reset(ResetFlags resetMask, const CSoundFile &sndFile, CHANNELINDEX sourceChannel, ChannelFlags muteFlag)
{
if(resetMask & resetSetPosBasic)
{
nNote = nNewNote = NOTE_NONE;
nNewIns = nOldIns = 0;
pModSample = nullptr;
pModInstrument = nullptr;
nPortamentoDest = 0;
nCommand = CMD_NONE;
nPatternLoopCount = 0;
nPatternLoop = 0;
nFadeOutVol = 0;
dwFlags.set(CHN_KEYOFF | CHN_NOTEFADE);
dwOldFlags.reset();
//IT compatibility 15. Retrigger
if(sndFile.m_playBehaviour[kITRetrigger])
{
nRetrigParam = 1;
nRetrigCount = 0;
}
microTuning = 0;
nTremorCount = 0;
nEFxSpeed = 0;
prevNoteOffset = 0;
lastZxxParam = 0xFF;
isFirstTick = false;
triggerNote = false;
isPreviewNote = false;
isPaused = false;
portaTargetReached = false;
rowCommand.Clear();
}
if(resetMask & resetSetPosAdvanced)
{
increment = SamplePosition(0);
nPeriod = 0;
position.Set(0);
nLength = 0;
nLoopStart = 0;
nLoopEnd = 0;
nROfs = nLOfs = 0;
pModSample = nullptr;
pModInstrument = nullptr;
nCutOff = 0x7F;
nResonance = 0;
nFilterMode = FilterMode::LowPass;
rightVol = leftVol = 0;
newRightVol = newLeftVol = 0;
rightRamp = leftRamp = 0;
nVolume = 0; // Needs to be 0 for SMP_NODEFAULTVOLUME flag
nVibratoPos = nTremoloPos = nPanbrelloPos = 0;
nOldHiOffset = 0;
nLeftVU = nRightVU = 0;
// Custom tuning related
m_ReCalculateFreqOnFirstTick = false;
m_CalculateFreq = false;
m_PortamentoFineSteps = 0;
m_PortamentoTickSlide = 0;
}
if(resetMask & resetChannelSettings)
{
if(sourceChannel < MAX_BASECHANNELS)
{
dwFlags = sndFile.ChnSettings[sourceChannel].dwFlags;
nPan = sndFile.ChnSettings[sourceChannel].nPan;
nGlobalVol = sndFile.ChnSettings[sourceChannel].nVolume;
if(dwFlags[CHN_MUTE])
{
dwFlags.reset(CHN_MUTE);
dwFlags.set(muteFlag);
}
} else
{
dwFlags.reset();
nPan = 128;
nGlobalVol = 64;
}
nRestorePanOnNewNote = 0;
nRestoreCutoffOnNewNote = 0;
nRestoreResonanceOnNewNote = 0;
}
}
void ModChannel::Stop()
{
nPeriod = 0;
increment.Set(0);
position.Set(0);
nLeftVU = nRightVU = 0;
nVolume = 0;
pCurrentSample = nullptr;
}
void ModChannel::UpdateInstrumentVolume(const ModSample *smp, const ModInstrument *ins)
{
nInsVol = 64;
if(smp != nullptr)
nInsVol = smp->nGlobalVol;
if(ins != nullptr)
nInsVol = (nInsVol * ins->nGlobalVol) / 64;
}
ModCommand::NOTE ModChannel::GetPluginNote(bool realNoteMapping) const
{
if(nArpeggioLastNote != NOTE_NONE)
{
// If an arpeggio is playing, this definitely the last playing note, which may be different from the arpeggio base note stored in nNote.
return nArpeggioLastNote;
}
ModCommand::NOTE plugNote = mpt::saturate_cast<ModCommand::NOTE>(nNote - nTranspose);
// Caution: When in compatible mode, ModChannel::nNote stores the "real" note, not the mapped note!
if(realNoteMapping && pModInstrument != nullptr && plugNote >= NOTE_MIN && plugNote < (std::size(pModInstrument->NoteMap) + NOTE_MIN))
{
plugNote = pModInstrument->NoteMap[plugNote - NOTE_MIN];
}
return plugNote;
}
void ModChannel::SetInstrumentPan(int32 pan, const CSoundFile &sndFile)
{
// IT compatibility: Instrument and sample panning does not override channel panning
// Test case: PanResetInstr.it
if(sndFile.m_playBehaviour[kITDoNotOverrideChannelPan])
{
nRestorePanOnNewNote = static_cast<uint16>(nPan + 1);
if(dwFlags[CHN_SURROUND])
nRestorePanOnNewNote |= 0x8000;
}
nPan = pan;
}
void ModChannel::RestorePanAndFilter()
{
if(nRestorePanOnNewNote > 0)
{
nPan = (nRestorePanOnNewNote & 0x7FFF) - 1;
if(nRestorePanOnNewNote & 0x8000)
dwFlags.set(CHN_SURROUND);
nRestorePanOnNewNote = 0;
}
if(nRestoreResonanceOnNewNote > 0)
{
nResonance = nRestoreResonanceOnNewNote - 1;
nRestoreResonanceOnNewNote = 0;
}
if(nRestoreCutoffOnNewNote > 0)
{
nCutOff = nRestoreCutoffOnNewNote - 1;
nRestoreCutoffOnNewNote = 0;
}
}
void ModChannel::RecalcTuningFreq(Tuning::RATIOTYPE vibratoFactor, Tuning::NOTEINDEXTYPE arpeggioSteps, const CSoundFile &sndFile)
{
if(!HasCustomTuning())
return;
ModCommand::NOTE note = ModCommand::IsNote(nNote) ? nNote : nLastNote;
if(sndFile.m_playBehaviour[kITRealNoteMapping] && note >= NOTE_MIN && note <= NOTE_MAX)
note = pModInstrument->NoteMap[note - NOTE_MIN];
nPeriod = mpt::saturate_round<uint32>(nC5Speed * vibratoFactor * pModInstrument->pTuning->GetRatio(note - NOTE_MIDDLEC + arpeggioSteps, nFineTune + m_PortamentoFineSteps) * (1 << FREQ_FRACBITS));
}
// IT command S73-S7E
void ModChannel::InstrumentControl(uint8 param, const CSoundFile &sndFile)
{
param &= 0x0F;
switch(param)
{
case 0x3: nNNA = NewNoteAction::NoteCut; break;
case 0x4: nNNA = NewNoteAction::Continue; break;
case 0x5: nNNA = NewNoteAction::NoteOff; break;
case 0x6: nNNA = NewNoteAction::NoteFade; break;
case 0x7: VolEnv.flags.reset(ENV_ENABLED); break;
case 0x8: VolEnv.flags.set(ENV_ENABLED); break;
case 0x9: PanEnv.flags.reset(ENV_ENABLED); break;
case 0xA: PanEnv.flags.set(ENV_ENABLED); break;
case 0xB: PitchEnv.flags.reset(ENV_ENABLED); break;
case 0xC: PitchEnv.flags.set(ENV_ENABLED); break;
case 0xD: // S7D: Enable pitch envelope, force to play as pitch envelope
case 0xE: // S7E: Enable pitch envelope, force to play as filter envelope
if(sndFile.GetType() == MOD_TYPE_MPT)
{
PitchEnv.flags.set(ENV_ENABLED);
PitchEnv.flags.set(ENV_FILTER, param != 0xD);
}
break;
}
}
OPENMPT_NAMESPACE_END
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