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Initial community commit
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Jef
222
Src/external_dependencies/openmpt-trunk/soundlib/ModChannel.cpp
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Src/external_dependencies/openmpt-trunk/soundlib/ModChannel.cpp
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/*
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* ModChannel.cpp
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* --------------
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* Purpose: Module Channel header class and helpers
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* Notes : (currently none)
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* Authors: OpenMPT Devs
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* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
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*/
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#include "stdafx.h"
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#include "Sndfile.h"
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#include "ModChannel.h"
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#include "tuning.h"
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OPENMPT_NAMESPACE_BEGIN
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void ModChannel::Reset(ResetFlags resetMask, const CSoundFile &sndFile, CHANNELINDEX sourceChannel, ChannelFlags muteFlag)
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{
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if(resetMask & resetSetPosBasic)
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{
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nNote = nNewNote = NOTE_NONE;
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nNewIns = nOldIns = 0;
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pModSample = nullptr;
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pModInstrument = nullptr;
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nPortamentoDest = 0;
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nCommand = CMD_NONE;
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nPatternLoopCount = 0;
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nPatternLoop = 0;
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nFadeOutVol = 0;
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dwFlags.set(CHN_KEYOFF | CHN_NOTEFADE);
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dwOldFlags.reset();
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//IT compatibility 15. Retrigger
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if(sndFile.m_playBehaviour[kITRetrigger])
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{
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nRetrigParam = 1;
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nRetrigCount = 0;
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}
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microTuning = 0;
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nTremorCount = 0;
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nEFxSpeed = 0;
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prevNoteOffset = 0;
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lastZxxParam = 0xFF;
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isFirstTick = false;
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triggerNote = false;
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isPreviewNote = false;
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isPaused = false;
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portaTargetReached = false;
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rowCommand.Clear();
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}
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if(resetMask & resetSetPosAdvanced)
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{
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increment = SamplePosition(0);
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nPeriod = 0;
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position.Set(0);
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nLength = 0;
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nLoopStart = 0;
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nLoopEnd = 0;
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nROfs = nLOfs = 0;
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pModSample = nullptr;
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pModInstrument = nullptr;
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nCutOff = 0x7F;
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nResonance = 0;
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nFilterMode = FilterMode::LowPass;
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rightVol = leftVol = 0;
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newRightVol = newLeftVol = 0;
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rightRamp = leftRamp = 0;
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nVolume = 0; // Needs to be 0 for SMP_NODEFAULTVOLUME flag
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nVibratoPos = nTremoloPos = nPanbrelloPos = 0;
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nOldHiOffset = 0;
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nLeftVU = nRightVU = 0;
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// Custom tuning related
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m_ReCalculateFreqOnFirstTick = false;
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m_CalculateFreq = false;
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m_PortamentoFineSteps = 0;
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m_PortamentoTickSlide = 0;
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}
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if(resetMask & resetChannelSettings)
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{
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if(sourceChannel < MAX_BASECHANNELS)
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{
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dwFlags = sndFile.ChnSettings[sourceChannel].dwFlags;
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nPan = sndFile.ChnSettings[sourceChannel].nPan;
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nGlobalVol = sndFile.ChnSettings[sourceChannel].nVolume;
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if(dwFlags[CHN_MUTE])
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{
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dwFlags.reset(CHN_MUTE);
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dwFlags.set(muteFlag);
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}
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} else
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{
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dwFlags.reset();
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nPan = 128;
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nGlobalVol = 64;
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}
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nRestorePanOnNewNote = 0;
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nRestoreCutoffOnNewNote = 0;
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nRestoreResonanceOnNewNote = 0;
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}
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}
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void ModChannel::Stop()
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{
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nPeriod = 0;
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increment.Set(0);
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position.Set(0);
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nLeftVU = nRightVU = 0;
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nVolume = 0;
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pCurrentSample = nullptr;
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}
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void ModChannel::UpdateInstrumentVolume(const ModSample *smp, const ModInstrument *ins)
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{
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nInsVol = 64;
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if(smp != nullptr)
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nInsVol = smp->nGlobalVol;
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if(ins != nullptr)
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nInsVol = (nInsVol * ins->nGlobalVol) / 64;
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}
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ModCommand::NOTE ModChannel::GetPluginNote(bool realNoteMapping) const
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{
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if(nArpeggioLastNote != NOTE_NONE)
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{
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// If an arpeggio is playing, this definitely the last playing note, which may be different from the arpeggio base note stored in nNote.
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return nArpeggioLastNote;
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}
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ModCommand::NOTE plugNote = mpt::saturate_cast<ModCommand::NOTE>(nNote - nTranspose);
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// Caution: When in compatible mode, ModChannel::nNote stores the "real" note, not the mapped note!
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if(realNoteMapping && pModInstrument != nullptr && plugNote >= NOTE_MIN && plugNote < (std::size(pModInstrument->NoteMap) + NOTE_MIN))
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{
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plugNote = pModInstrument->NoteMap[plugNote - NOTE_MIN];
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}
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return plugNote;
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}
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void ModChannel::SetInstrumentPan(int32 pan, const CSoundFile &sndFile)
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{
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// IT compatibility: Instrument and sample panning does not override channel panning
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// Test case: PanResetInstr.it
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if(sndFile.m_playBehaviour[kITDoNotOverrideChannelPan])
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{
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nRestorePanOnNewNote = static_cast<uint16>(nPan + 1);
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if(dwFlags[CHN_SURROUND])
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nRestorePanOnNewNote |= 0x8000;
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}
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nPan = pan;
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}
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void ModChannel::RestorePanAndFilter()
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{
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if(nRestorePanOnNewNote > 0)
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{
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nPan = (nRestorePanOnNewNote & 0x7FFF) - 1;
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if(nRestorePanOnNewNote & 0x8000)
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dwFlags.set(CHN_SURROUND);
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nRestorePanOnNewNote = 0;
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}
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if(nRestoreResonanceOnNewNote > 0)
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{
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nResonance = nRestoreResonanceOnNewNote - 1;
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nRestoreResonanceOnNewNote = 0;
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}
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if(nRestoreCutoffOnNewNote > 0)
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{
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nCutOff = nRestoreCutoffOnNewNote - 1;
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nRestoreCutoffOnNewNote = 0;
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}
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}
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void ModChannel::RecalcTuningFreq(Tuning::RATIOTYPE vibratoFactor, Tuning::NOTEINDEXTYPE arpeggioSteps, const CSoundFile &sndFile)
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{
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if(!HasCustomTuning())
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return;
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ModCommand::NOTE note = ModCommand::IsNote(nNote) ? nNote : nLastNote;
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if(sndFile.m_playBehaviour[kITRealNoteMapping] && note >= NOTE_MIN && note <= NOTE_MAX)
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note = pModInstrument->NoteMap[note - NOTE_MIN];
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nPeriod = mpt::saturate_round<uint32>(nC5Speed * vibratoFactor * pModInstrument->pTuning->GetRatio(note - NOTE_MIDDLEC + arpeggioSteps, nFineTune + m_PortamentoFineSteps) * (1 << FREQ_FRACBITS));
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}
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// IT command S73-S7E
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void ModChannel::InstrumentControl(uint8 param, const CSoundFile &sndFile)
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{
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param &= 0x0F;
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switch(param)
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{
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case 0x3: nNNA = NewNoteAction::NoteCut; break;
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case 0x4: nNNA = NewNoteAction::Continue; break;
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case 0x5: nNNA = NewNoteAction::NoteOff; break;
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case 0x6: nNNA = NewNoteAction::NoteFade; break;
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case 0x7: VolEnv.flags.reset(ENV_ENABLED); break;
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case 0x8: VolEnv.flags.set(ENV_ENABLED); break;
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case 0x9: PanEnv.flags.reset(ENV_ENABLED); break;
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case 0xA: PanEnv.flags.set(ENV_ENABLED); break;
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case 0xB: PitchEnv.flags.reset(ENV_ENABLED); break;
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case 0xC: PitchEnv.flags.set(ENV_ENABLED); break;
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case 0xD: // S7D: Enable pitch envelope, force to play as pitch envelope
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case 0xE: // S7E: Enable pitch envelope, force to play as filter envelope
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if(sndFile.GetType() == MOD_TYPE_MPT)
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{
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PitchEnv.flags.set(ENV_ENABLED);
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PitchEnv.flags.set(ENV_FILTER, param != 0xD);
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}
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break;
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}
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}
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OPENMPT_NAMESPACE_END
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