protected virtual void InitModule(uint startPosition = 0)
{
track = startPosition;
counter = 0;
patternDelay = 0;
samplesPerTick = 0;
mixerPosition = 0;
currentRow = 0;
pattern = module[(int)track];
BPM = module.BPM;
speed = module.tempo;
moduleEnd = false;
mixChannels.Clear();
for (int ch = 0; ch < module.numberOfChannels; ch++)
{
ModuleMixerChannel mc = CreateMixerChannel();
mc.instrumentIndex = 0;
mc.instrumentLastIndex = 0;
mixChannels.Add(mc);
}
SetBPM();
UpdateBPM();
}
private bool TickEffect2(ModuleMixerChannel mc)
{
mc.period = (uint)mc.portamentoStart;
mc.periodInc = CalcClampPeriodIncrement(mc);
mc.portamentoStart += mc.portamentoStep;
return(true);
}
private bool TickEffectA(ModuleMixerChannel mc) // Volume Slide tick
{
mc.channelVolume += mc.volumeSlideStep;
mc.channelVolume = (mc.channelVolume < 0.0f) ? 0.0f : mc.channelVolume;
mc.channelVolume = (mc.channelVolume > 1.0f) ? 1.0f : mc.channelVolume;
return(true);
}
private bool NoteEffect7(ModuleMixerChannel mc) // Tremolo
{
mc.tremoloCount = (mc.tremoloType <= 0x03) ? 0 : mc.tremoloCount;
mc.tremoloStart = mc.channelVolume;
mc.tremoloFreq = (mc.effectArgX != 0) ? (int)mc.effectArgX : 0;
mc.tremoloAmp = (mc.effectArgY != 0) ? (int)mc.effectArgY : 0;
return(true);
}
private bool NoteEffect6(ModuleMixerChannel mc) // Continue Vibrato + Volume Slide
{
NoteEffectA(mc);
mc.effectArgX = 0;
mc.effectArgY = 0;
NoteEffect4(mc);
return(true);
}
/*
* var startTime = System.Diagnostics.Stopwatch.StartNew();
* startTime.Stop();
* var resultTime = startTime.Elapsed;
* string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:000}",
* resultTime.Hours,
* resultTime.Minutes,
* resultTime.Seconds,
* resultTime.Milliseconds);
*/
public float GetSampleValue(ModuleMixerChannel mc)
{
if (mc.instrumentIndex <= 0)
{
return(0.0f);
}
ModuleInstrument sampleData = module.Instruments[(int)mc.instrumentIndex - 1];
mc.instrumentPosition = sampleData.CalculateInstrumentPosition(mc.instrumentPosition);
return(GetSampleValueSimple(mc));
}
private bool TickEffect4(ModuleMixerChannel mc)
{
mc.vibratoAdd = (mc.vibratoType % 4 == 0) ? ModuleConst.ModSinusTable[mc.vibratoCount] : mc.vibratoAdd;
mc.vibratoAdd = (mc.vibratoType % 4 == 1) ? ModuleConst.ModRampDownTable[mc.vibratoCount] : mc.vibratoAdd;
mc.vibratoAdd = (mc.vibratoType % 4 == 2) ? ModuleConst.ModSquareTable[mc.vibratoCount] : mc.vibratoAdd;
mc.vibratoAdd = (mc.vibratoType % 4 == 3) ? ModuleConst.ModRandomTable[mc.vibratoCount] : mc.vibratoAdd;
mc.periodInc = CalcPeriodIncrement((uint)mc.vibratoPeriod);
mc.vibratoPeriod = mc.vibratoStart + (int)(mc.vibratoAdd * ((float)mc.vibratoAmp / 128.0f));
mc.vibratoCount = (mc.vibratoCount + mc.vibratoFreq) & 0x3F;
return(true);
}
private bool NoteEffectB(ModuleMixerChannel mc) // Position Jump
{
mc.patternNumToJump = mc.effectArgX * 16 + mc.effectArgY;
if (mc.patternNumToJump > 0x7F)
{
mc.patternNumToJump = 0;
}
currentRow = 0;
track = module.arrangement[(int)mc.patternNumToJump];
pattern = module.patterns[(int)module.arrangement[(int)track]];
return(true);
}
private bool TickEffect7(ModuleMixerChannel mc)
{
mc.tremoloAdd = (mc.tremoloType % 4 == 0) ? ModuleConst.ModSinusTable[mc.tremoloCount] : mc.tremoloAdd;
mc.tremoloAdd = (mc.tremoloType % 4 == 1) ? ModuleConst.ModRampDownTable[mc.tremoloCount] : mc.tremoloAdd;
mc.tremoloAdd = (mc.tremoloType % 4 == 2) ? ModuleConst.ModSquareTable[mc.tremoloCount] : mc.tremoloAdd;
mc.tremoloAdd = (mc.tremoloType % 4 == 3) ? ModuleConst.ModRandomTable[mc.tremoloCount] : mc.tremoloAdd;
mc.channelVolume = mc.tremoloStart + ((float)mc.tremoloAdd / 64) * ((float)mc.tremoloAmp / 0x40);
mc.channelVolume = (mc.channelVolume < 0.0f) ? 0.0f : mc.channelVolume;
mc.channelVolume = (mc.channelVolume > 1.0f) ? 1.0f : mc.channelVolume;
mc.tremoloCount = (mc.tremoloCount + mc.tremoloFreq) & 0x3F;
return(true);
}
private bool NoteEffectD(ModuleMixerChannel mc) // Pattern Break
{
mc.positionToJump = mc.effectArgX * 10 + mc.effectArgY;
if (mc.positionToJump > 0x3F)
{
mc.positionToJump = 0;
}
track++;
pattern = module.patterns[(int)module.arrangement[(int)track]];
currentRow = mc.positionToJump;
return(true);
}
private bool NoteEffectA(ModuleMixerChannel mc) // Volume Slide
{
mc.volumeSlideStep = 0;
if (mc.effectArgX != 0)
{
mc.volumeSlideStep = (float)mc.effectArgX / 0x40; // Volume Slide up
}
else if (mc.effectArgY != 0)
{
mc.volumeSlideStep = -(float)mc.effectArgY / 0x40; // Volume Slide down
}
mc.channelVolume -= mc.volumeSlideStep;
return(true);
}
private bool NoteEffect3(ModuleMixerChannel mc) // Slide to note
{
if (mc.effectArg != 0)
{
mc.lastPortamentoStep = mc.portamentoStep;
mc.portamentoStep = (mc.portamentoStart <= mc.portamentoEnd) ? (int)mc.effectArg : -(int)mc.effectArg;
}
else
{
mc.portamentoStep = mc.lastPortamentoStep;
}
return(true);
}
protected virtual void MixData()
{
string ms = " channels " + module.numberOfChannels + " ";
for (int pos = 0; pos < ModuleConst.MIX_LEN; pos++)
{
float mixValueR = 0;
float mixValueL = 0;
float mixValue = 0;
for (int ch = 0; ch < module.numberOfChannels; ch++)
{
ModuleMixerChannel mc = mixChannels[ch];
//if (ch != 1) mc.muted = true;
if (!mc.muted)
{
mixValue += GetSampleValue(mc);
//if (ModuleConst.MIX_CHANNELS == ModuleConst.STEREO) {
// mixValueL += (((ch & 0x03) == 0) || ((ch & 0x03) == 3)) ? mixValue * 0.75f : mixValue * 0.25f;
// mixValueR += (((ch & 0x03) == 1) || ((ch & 0x03) == 2)) ? mixValue * 0.75f : mixValue * 0.25f;
//}
}
mc.instrumentPosition += mc.periodInc;
}
if (ModuleConst.MIX_CHANNELS != ModuleConst.STEREO)
{
mixValue /= module.numberOfChannels;
}
//else {
// mixValueL /= (module.numberOfChannels << 1);
// mixValueR /= (module.numberOfChannels << 1);
//}
if (ModuleConst.MIX_CHANNELS != ModuleConst.STEREO)
{
waveStream.Write((short)mixValue);
}
//else {
// waveStream.Write((short)mixValueL);
// waveStream.Write((short)mixValueR);
//}
mixerPosition++;
if (mixerPosition >= samplesPerTick)
{
SetBPM();
UpdateBPM();
}
}
}
protected override void ResetChannelInstrument(ModuleMixerChannel mc)
{
MOD_Instrument instrument = (MOD_Instrument)module.Instruments[(int)mc.instrumentIndex - 1];
mc.instrumentPosition = 2;
mc.instrumentLength = instrument.length;
mc.loopType = instrument.loopType;
mc.instrumentLoopStart = instrument.repeatStart;
mc.instrumentLoopEnd = instrument.repeatStop;
mc.currentFineTune = instrument.fineTune;
mc.vibratoCount = 0;
mc.tremoloCount = 0;
mc.arpeggioCount = 0;
}
protected virtual float GetSampleValueLinear(ModuleMixerChannel mc)
{
ModuleInstrument sampleData = module.Instruments[(int)mc.instrumentIndex - 1];
int posInt = (int)mc.instrumentPosition;
float posReal = mc.instrumentPosition - posInt;
float a1 = sampleData[posInt];
if ((posInt + 1) >= mc.instrumentLength)
{
return(a1 * mc.channelVolume);
}
float a2 = sampleData[posInt + 1];
return((a1 + (a2 - a1) * posReal) * mc.channelVolume);
}
//----------------------------------------------------------------------------------------------
private bool TickEffect0(ModuleMixerChannel mc)
{
if (mc.effectArg == 0)
{
return(false);
}
uint arpeggioPeriod = mc.arpeggioPeriod0;
arpeggioPeriod = (mc.arpeggioCount == 1) ? mc.arpeggioPeriod1 : arpeggioPeriod;
arpeggioPeriod = (mc.arpeggioCount == 2) ? mc.arpeggioPeriod2 : arpeggioPeriod;
//mc.period = arpeggioPeriod;
mc.periodInc = CalcPeriodIncrement(arpeggioPeriod);
mc.arpeggioCount = (mc.arpeggioCount + 1) % 4;
return(true);
}
private bool NoteEffect0(ModuleMixerChannel mc) // Arpeggio
{
if (mc.effectArg == 0)
{
return(false);
}
mc.arpeggioCount = 0;
mc.arpeggioIndex = mc.noteIndex;
mc.arpeggioX = mc.arpeggioIndex + mc.effectArgX;
mc.arpeggioY = mc.arpeggioIndex + mc.effectArgY;
mc.arpeggioPeriod0 = GetNoteFreq(mc.arpeggioIndex, /*mc.currentFineTune*/ 0);
mc.period = mc.arpeggioPeriod0;
mc.arpeggioPeriod1 = (mc.arpeggioX < 60) ? GetNoteFreq(mc.arpeggioX, /*mc.currentFineTune*/ 0) : mc.arpeggioPeriod0;
mc.arpeggioPeriod2 = (mc.arpeggioY < 60) ? GetNoteFreq(mc.arpeggioY, /*mc.currentFineTune*/ 0) : mc.arpeggioPeriod0;
return(true);
}
private bool TickEffect3(ModuleMixerChannel mc)
{
mc.period = (uint)mc.portamentoStart;
mc.periodInc = CalcClampPeriodIncrement(mc);
mc.portamentoStart += mc.portamentoStep;
if (mc.portamentoStep < 0)
{
mc.portamentoStart = (mc.portamentoStart > mc.portamentoEnd) ? mc.portamentoStart : mc.portamentoEnd;
}
else
{
mc.portamentoStart = (mc.portamentoStart < mc.portamentoEnd) ? mc.portamentoStart : mc.portamentoEnd;
}
return(true);
}
private bool NoteEffectF(ModuleMixerChannel mc) // SetSpeed
{
if ((mc.effectArg >= 0x20) && (mc.effectArg <= 0xFF))
{
BPM = mc.effectArg;
SetBPM();
}
if ((mc.effectArg > 0) && (mc.effectArg <= 0x1F))
{
speed = mc.effectArg;
}
//System.Diagnostics.Debug.WriteLine("Set BPM/speed -> " + BPM + " : " + speed);
return(true);
}
private bool NoteEffect4(ModuleMixerChannel mc) // Vibrato
{
mc.vibratoStart = (int)mc.period;
mc.vibratoPeriod = mc.vibratoStart;
if (mc.effectArgX != 0 && mc.effectArgY != 0)
{
mc.lastVibratoFreq = (int)mc.effectArgX;
mc.lastVibratoAmp = (int)mc.effectArgY;
mc.vibratoFreq = (int)mc.effectArgX;
mc.vibratoAmp = (int)mc.effectArgY;
mc.vibratoCount = 0;
}
else
{
mc.vibratoFreq = mc.lastVibratoFreq;
mc.vibratoAmp = mc.lastVibratoAmp;
mc.vibratoCount = 0;
}
return(true);
}
protected virtual float GetSampleValueSpline(ModuleMixerChannel mc)
{
ModuleInstrument sampleData = module.Instruments[(int)mc.instrumentIndex - 1];
int posInt = (int)mc.instrumentPosition;
float posReal = mc.instrumentPosition - posInt;
float a2 = sampleData[posInt];
if (((posInt - 1) < 0) || ((posInt + 2) >= mc.instrumentLength))
{
return(a2 * mc.channelVolume);
}
float a1 = sampleData[posInt - 1];
float a3 = sampleData[posInt + 1];
float a4 = sampleData[posInt + 2];
float b0 = a1 + a2 + a2 + a2 + a2 + a3;
float b1 = -a1 + a3;
float b2 = a1 - a2 - a2 + a3;
float b3 = -a1 + a2 + a2 + a2 - a3 - a3 - a3 + a4;
return((((b3 * posReal * 0.1666666f + b2 * 0.5f) * posReal + b1 * 0.5f) * posReal + b0 * 0.1666666f) * mc.channelVolume);
}
private bool EffectEF(ModuleMixerChannel mc)
{
return(true);
}
private bool EffectEE(ModuleMixerChannel mc) // Delay
{
patternDelay = mc.effectArgY;
return(true);
}
private bool EffectEC(ModuleMixerChannel mc) // Cut Sample
{
return(true);
}
private bool EffectEB(ModuleMixerChannel mc) // Fine Volume Slide Down
{
mc.effect = 0x0A;
mc.volumeSlideStep = -(float)mc.effectArgY / 0x40;
return(true);
}
private bool EffectE9(ModuleMixerChannel mc) // Retrigger Sample
{
return(true);
}
private bool EffectE7(ModuleMixerChannel mc)
{
mc.tremoloType = mc.effectArgY & 0x7;
return(true);
}
private bool EffectE5(ModuleMixerChannel mc)
{
mc.currentFineTune = (int)mc.effectArgY;
return(true);
}
private bool EffectE4(ModuleMixerChannel mc)
{
mc.vibratoType = mc.effectArgY & 0x7;
return(true);
}
private bool EffectE2(ModuleMixerChannel mc)
{
mc.period += mc.effectArgY;
mc.periodInc = CalcClampPeriodIncrement(mc);
return(true);
}