232 lines
8.3 KiB
C++
232 lines
8.3 KiB
C++
/*
|
|
* ModChannel.h
|
|
* ------------
|
|
* 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.
|
|
*/
|
|
|
|
|
|
#pragma once
|
|
|
|
#include "BuildSettings.h"
|
|
|
|
#include "ModSample.h"
|
|
#include "ModInstrument.h"
|
|
#include "modcommand.h"
|
|
#include "Paula.h"
|
|
#include "tuningbase.h"
|
|
|
|
OPENMPT_NAMESPACE_BEGIN
|
|
|
|
class CSoundFile;
|
|
|
|
// Mix Channel Struct
|
|
struct ModChannel
|
|
{
|
|
// Envelope playback info
|
|
struct EnvInfo
|
|
{
|
|
FlagSet<EnvelopeFlags> flags;
|
|
uint32 nEnvPosition = 0;
|
|
int32 nEnvValueAtReleaseJump = NOT_YET_RELEASED;
|
|
|
|
void Reset()
|
|
{
|
|
nEnvPosition = 0;
|
|
nEnvValueAtReleaseJump = NOT_YET_RELEASED;
|
|
}
|
|
};
|
|
|
|
// Information used in the mixer (should be kept tight for better caching)
|
|
SamplePosition position; // Current play position (fixed point)
|
|
SamplePosition increment; // Sample speed relative to mixing frequency (fixed point)
|
|
const void *pCurrentSample; // Currently playing sample (nullptr if no sample is playing)
|
|
int32 leftVol; // 0...4096 (12 bits, since 16 bits + 12 bits = 28 bits = 0dB in integer mixer, see MIXING_ATTENUATION)
|
|
int32 rightVol; // Ditto
|
|
int32 leftRamp; // Ramping delta, 20.12 fixed point (see VOLUMERAMPPRECISION)
|
|
int32 rightRamp; // Ditto
|
|
int32 rampLeftVol; // Current ramping volume, 20.12 fixed point (see VOLUMERAMPPRECISION)
|
|
int32 rampRightVol; // Ditto
|
|
mixsample_t nFilter_Y[2][2]; // Filter memory - two history items per sample channel
|
|
mixsample_t nFilter_A0, nFilter_B0, nFilter_B1; // Filter coeffs
|
|
mixsample_t nFilter_HP;
|
|
|
|
SmpLength nLength;
|
|
SmpLength nLoopStart;
|
|
SmpLength nLoopEnd;
|
|
FlagSet<ChannelFlags> dwFlags;
|
|
mixsample_t nROfs, nLOfs;
|
|
uint32 nRampLength;
|
|
|
|
const ModSample *pModSample; // Currently assigned sample slot (may already be stopped)
|
|
Paula::State paulaState;
|
|
|
|
// Information not used in the mixer
|
|
const ModInstrument *pModInstrument; // Currently assigned instrument slot
|
|
SmpLength prevNoteOffset; // Offset for instrument-less notes for ProTracker/ScreamTracker
|
|
SmpLength oldOffset;
|
|
FlagSet<ChannelFlags> dwOldFlags; // Flags from previous tick
|
|
int32 newLeftVol, newRightVol;
|
|
int32 nRealVolume, nRealPan;
|
|
int32 nVolume, nPan, nFadeOutVol;
|
|
int32 nPeriod; // Frequency in Hz if CSoundFile::PeriodsAreFrequencies() or using custom tuning, 4x Amiga periods otherwise
|
|
int32 nC5Speed, nPortamentoDest;
|
|
int32 cachedPeriod, glissandoPeriod;
|
|
int32 nCalcVolume; // Calculated channel volume, 14-Bit (without global volume, pre-amp etc applied) - for MIDI macros
|
|
EnvInfo VolEnv, PanEnv, PitchEnv; // Envelope playback info
|
|
int32 nGlobalVol; // Channel volume (CV in ITTECH.TXT) 0...64
|
|
int32 nInsVol; // Sample / Instrument volume (SV * IV in ITTECH.TXT) 0...64
|
|
int32 nFineTune, nTranspose;
|
|
int32 nPortamentoSlide, nAutoVibDepth;
|
|
uint32 nEFxOffset; // Offset memory for Invert Loop (EFx, .MOD only)
|
|
int16 nVolSwing, nPanSwing;
|
|
int16 nCutSwing, nResSwing;
|
|
uint16 nRestorePanOnNewNote; //If > 0, nPan should be set to nRestorePanOnNewNote - 1 on new note. Used to recover from pan swing and IT sample / instrument panning. High bit set = surround
|
|
int16 nRetrigCount, nRetrigParam;
|
|
ROWINDEX nPatternLoop;
|
|
CHANNELINDEX nMasterChn;
|
|
ModCommand rowCommand;
|
|
// 8-bit members
|
|
ResamplingMode resamplingMode;
|
|
uint8 nRestoreResonanceOnNewNote; // See nRestorePanOnNewNote
|
|
uint8 nRestoreCutoffOnNewNote; // ditto
|
|
uint8 nNote;
|
|
NewNoteAction nNNA;
|
|
uint8 nLastNote; // Last note, ignoring note offs and cuts - for MIDI macros
|
|
uint8 nArpeggioLastNote, nArpeggioBaseNote; // For plugin arpeggio
|
|
uint8 nNewNote, nNewIns, nOldIns, nCommand, nArpeggio;
|
|
uint8 nOldVolumeSlide, nOldFineVolUpDown;
|
|
uint8 nOldPortaUp, nOldPortaDown, nOldFinePortaUpDown, nOldExtraFinePortaUpDown;
|
|
uint8 nOldPanSlide, nOldChnVolSlide;
|
|
uint8 nOldGlobalVolSlide;
|
|
uint8 nAutoVibPos, nVibratoPos, nTremoloPos, nPanbrelloPos;
|
|
uint8 nVibratoType, nVibratoSpeed, nVibratoDepth;
|
|
uint8 nTremoloType, nTremoloSpeed, nTremoloDepth;
|
|
uint8 nPanbrelloType, nPanbrelloSpeed, nPanbrelloDepth;
|
|
int8 nPanbrelloOffset, nPanbrelloRandomMemory;
|
|
uint8 nOldCmdEx, nOldVolParam, nOldTempo;
|
|
uint8 nOldHiOffset;
|
|
uint8 nCutOff, nResonance;
|
|
uint8 nTremorCount, nTremorParam;
|
|
uint8 nPatternLoopCount;
|
|
uint8 nLeftVU, nRightVU;
|
|
uint8 nActiveMacro;
|
|
FilterMode nFilterMode;
|
|
uint8 nEFxSpeed, nEFxDelay; // memory for Invert Loop (EFx, .MOD only)
|
|
uint8 nNoteSlideCounter, nNoteSlideSpeed, nNoteSlideStep; // IMF / PTM Note Slide
|
|
uint8 lastZxxParam; // Memory for \xx slides
|
|
bool isFirstTick : 1; // Execute tick-0 effects on this channel? (condition differs between formats due to Pattern Delay commands)
|
|
bool triggerNote : 1; // Trigger note on this tick on this channel if there is one?
|
|
bool isPreviewNote : 1; // Notes preview in editor
|
|
|
|
//-->Variables used to make user-definable tuning modes work with pattern effects.
|
|
//If true, freq should be recalculated in ReadNote() on first tick.
|
|
//Currently used only for vibrato things - using in other context might be
|
|
//problematic.
|
|
bool m_ReCalculateFreqOnFirstTick : 1;
|
|
|
|
//To tell whether to calculate frequency.
|
|
bool m_CalculateFreq : 1;
|
|
|
|
int32 m_PortamentoFineSteps, m_PortamentoTickSlide;
|
|
|
|
//NOTE_PCs memory.
|
|
float m_plugParamValueStep, m_plugParamTargetValue;
|
|
uint16 m_RowPlugParam;
|
|
PLUGINDEX m_RowPlug;
|
|
|
|
void ClearRowCmd() { rowCommand = ModCommand(); }
|
|
|
|
// Get a reference to a specific envelope of this channel
|
|
const EnvInfo &GetEnvelope(EnvelopeType envType) const
|
|
{
|
|
switch(envType)
|
|
{
|
|
case ENV_VOLUME:
|
|
default:
|
|
return VolEnv;
|
|
case ENV_PANNING:
|
|
return PanEnv;
|
|
case ENV_PITCH:
|
|
return PitchEnv;
|
|
}
|
|
}
|
|
|
|
EnvInfo &GetEnvelope(EnvelopeType envType)
|
|
{
|
|
return const_cast<EnvInfo &>(static_cast<const ModChannel *>(this)->GetEnvelope(envType));
|
|
}
|
|
|
|
void ResetEnvelopes()
|
|
{
|
|
VolEnv.Reset();
|
|
PanEnv.Reset();
|
|
PitchEnv.Reset();
|
|
}
|
|
|
|
enum ResetFlags
|
|
{
|
|
resetChannelSettings = 1, // Reload initial channel settings
|
|
resetSetPosBasic = 2, // Reset basic runtime channel attributes
|
|
resetSetPosAdvanced = 4, // Reset more runtime channel attributes
|
|
resetSetPosFull = resetSetPosBasic | resetSetPosAdvanced | resetChannelSettings, // Reset all runtime channel attributes
|
|
resetTotal = resetSetPosFull,
|
|
};
|
|
|
|
void Reset(ResetFlags resetMask, const CSoundFile &sndFile, CHANNELINDEX sourceChannel, ChannelFlags muteFlag);
|
|
void Stop();
|
|
|
|
bool IsSamplePlaying() const noexcept { return !increment.IsZero(); }
|
|
|
|
uint32 GetVSTVolume() const noexcept { return (pModInstrument) ? pModInstrument->nGlobalVol * 4 : nVolume; }
|
|
|
|
ModCommand::NOTE GetPluginNote(bool realNoteMapping) const;
|
|
|
|
// Check if the channel has a valid MIDI output. A return value of true implies that pModInstrument != nullptr.
|
|
bool HasMIDIOutput() const noexcept { return pModInstrument != nullptr && pModInstrument->HasValidMIDIChannel(); }
|
|
// Check if the channel uses custom tuning. A return value of true implies that pModInstrument != nullptr.
|
|
bool HasCustomTuning() const noexcept { return pModInstrument != nullptr && pModInstrument->pTuning != nullptr; }
|
|
|
|
// Check if currently processed loop is a sustain loop. pModSample is not checked for validity!
|
|
bool InSustainLoop() const noexcept { return (dwFlags & (CHN_LOOP | CHN_KEYOFF)) == CHN_LOOP && pModSample->uFlags[CHN_SUSTAINLOOP]; }
|
|
|
|
void UpdateInstrumentVolume(const ModSample *smp, const ModInstrument *ins);
|
|
|
|
void SetInstrumentPan(int32 pan, const CSoundFile &sndFile);
|
|
void RestorePanAndFilter();
|
|
|
|
void RecalcTuningFreq(Tuning::RATIOTYPE vibratoFactor, Tuning::NOTEINDEXTYPE arpeggioSteps, const CSoundFile &sndFile);
|
|
|
|
// IT command S73-S7E
|
|
void InstrumentControl(uint8 param, const CSoundFile &sndFile);
|
|
};
|
|
|
|
|
|
// Default pattern channel settings
|
|
struct ModChannelSettings
|
|
{
|
|
FlagSet<ChannelFlags> dwFlags; // Channel flags
|
|
uint16 nPan; // Initial pan (0...256)
|
|
uint16 nVolume; // Initial channel volume (0...64)
|
|
PLUGINDEX nMixPlugin; // Assigned plugin
|
|
mpt::charbuf<MAX_CHANNELNAME> szName; // Channel name
|
|
|
|
ModChannelSettings()
|
|
{
|
|
Reset();
|
|
}
|
|
|
|
void Reset()
|
|
{
|
|
dwFlags.reset();
|
|
nPan = 128;
|
|
nVolume = 64;
|
|
nMixPlugin = 0;
|
|
szName = "";
|
|
}
|
|
};
|
|
|
|
OPENMPT_NAMESPACE_END
|