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* LinuxSampler - modular, streaming capable sampler * |
* LinuxSampler - modular, streaming capable sampler * |
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* * |
* * |
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* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
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* Copyright (C) 2005 Christian Schoenebeck * |
* Copyright (C) 2005, 2006 Christian Schoenebeck * |
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* * |
* * |
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* This program is free software; you can redistribute it and/or modify * |
* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
* it under the terms of the GNU General Public License as published by * |
150 |
MaxRAMPos = cachedsamples - (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) / pSample->Channels; //TODO: this calculation is too pessimistic and may better be moved to Render() method, so it calculates MaxRAMPos dependent to the current demand of sample points to be rendered (e.g. in case of JACK) |
MaxRAMPos = cachedsamples - (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) / pSample->Channels; //TODO: this calculation is too pessimistic and may better be moved to Render() method, so it calculates MaxRAMPos dependent to the current demand of sample points to be rendered (e.g. in case of JACK) |
151 |
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152 |
// check if there's a loop defined which completely fits into the cached (RAM) part of the sample |
// check if there's a loop defined which completely fits into the cached (RAM) part of the sample |
153 |
if (pSample->Loops && pSample->LoopEnd <= MaxRAMPos) { |
RAMLoop = (pSample->Loops && pSample->LoopEnd <= MaxRAMPos); |
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RAMLoop = true; |
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loop.uiTotalCycles = pSample->LoopPlayCount; |
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loop.uiCyclesLeft = pSample->LoopPlayCount; |
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loop.uiStart = pSample->LoopStart; |
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loop.uiEnd = pSample->LoopEnd; |
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loop.uiSize = pSample->LoopSize; |
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} |
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else RAMLoop = false; |
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154 |
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155 |
if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) { |
if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) { |
156 |
dmsg(1,("Disk stream order failed!\n")); |
dmsg(1,("Disk stream order failed!\n")); |
161 |
} |
} |
162 |
else { // RAM only voice |
else { // RAM only voice |
163 |
MaxRAMPos = cachedsamples; |
MaxRAMPos = cachedsamples; |
164 |
if (pSample->Loops) { |
RAMLoop = (pSample->Loops != 0); |
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RAMLoop = true; |
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loop.uiCyclesLeft = pSample->LoopPlayCount; |
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} |
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else RAMLoop = false; |
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165 |
dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no")); |
dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no")); |
166 |
} |
} |
167 |
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if (RAMLoop) { |
168 |
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loop.uiTotalCycles = pSample->LoopPlayCount; |
169 |
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loop.uiCyclesLeft = pSample->LoopPlayCount; |
170 |
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loop.uiStart = pSample->LoopStart; |
171 |
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loop.uiEnd = pSample->LoopEnd; |
172 |
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loop.uiSize = pSample->LoopSize; |
173 |
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} |
174 |
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175 |
// calculate initial pitch value |
// calculate initial pitch value |
176 |
{ |
{ |
223 |
pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE); |
pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE); |
224 |
} |
} |
225 |
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226 |
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// setup initial volume in synthesis parameters |
227 |
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fFinalVolume = getVolume() * EG1.getLevel(); |
228 |
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finalSynthesisParameters.fFinalVolumeLeft = fFinalVolume * PanLeft; |
229 |
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finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight; |
230 |
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231 |
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232 |
// setup EG 2 (VCF Cutoff EG) |
// setup EG 2 (VCF Cutoff EG) |
233 |
{ |
{ |
269 |
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270 |
// setup EG 3 (VCO EG) |
// setup EG 3 (VCO EG) |
271 |
{ |
{ |
272 |
double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth); |
// if portamento mode is on, we dedicate EG3 purely for portamento, otherwise if portamento is off we do as told by the patch |
273 |
EG3.trigger(eg3depth, pDimRgn->EG3Attack, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE); |
bool bPortamento = pEngineChannel->PortamentoMode && pEngineChannel->PortamentoPos >= 0.0f; |
274 |
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float eg3depth = (bPortamento) |
275 |
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? RTMath::CentsToFreqRatio((pEngineChannel->PortamentoPos - (float) MIDIKey) * 100) |
276 |
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: RTMath::CentsToFreqRatio(pDimRgn->EG3Depth); |
277 |
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float eg3time = (bPortamento) |
278 |
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? pEngineChannel->PortamentoTime |
279 |
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: pDimRgn->EG3Attack; |
280 |
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EG3.trigger(eg3depth, eg3time, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE); |
281 |
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dmsg(5,("PortamentoPos=%f, depth=%f, time=%f\n", pEngineChannel->PortamentoPos, eg3depth, eg3time)); |
282 |
} |
} |
283 |
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284 |
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501 |
if (VCFCutoffCtrl.controller) { |
if (VCFCutoffCtrl.controller) { |
502 |
cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller]; |
cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller]; |
503 |
if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue; |
if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue; |
504 |
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// VCFVelocityScale in this case means Minimum cutoff |
505 |
if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale; |
if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale; |
506 |
} |
} |
507 |
else { |
else { |
509 |
} |
} |
510 |
cutoff *= float(cvalue) * 0.00787402f; // (1 / 127) |
cutoff *= float(cvalue) * 0.00787402f; // (1 / 127) |
511 |
if (cutoff > 1.0) cutoff = 1.0; |
if (cutoff > 1.0) cutoff = 1.0; |
512 |
cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN; |
cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449); |
513 |
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if (cutoff < 1.0) cutoff = 1.0; |
514 |
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515 |
// calculate resonance |
// calculate resonance |
516 |
float resonance = (float) VCFResonanceCtrl.value * 0.00787f; // 0.0..1.0 |
float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance) * 0.00787f; // 0.0..1.0 |
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if (pDimRgn->VCFKeyboardTracking) { |
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resonance += (float) (itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.00787f; |
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} |
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Constrain(resonance, 0.0, 1.0); // correct resonance if outside allowed value range (0.0..1.0) |
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517 |
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518 |
VCFCutoffCtrl.fvalue = cutoff - CONFIG_FILTER_CUTOFF_MIN; |
VCFCutoffCtrl.fvalue = cutoff - 1.0; |
519 |
VCFResonanceCtrl.fvalue = resonance; |
VCFResonanceCtrl.fvalue = resonance; |
520 |
} |
} |
521 |
else { |
else { |
703 |
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704 |
void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) { |
void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) { |
705 |
CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value); |
CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value); |
706 |
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fFinalVolume = getVolume(); |
707 |
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} |
708 |
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709 |
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float Voice::getVolume() { |
710 |
#if CONFIG_PROCESS_MUTED_CHANNELS |
#if CONFIG_PROCESS_MUTED_CHANNELS |
711 |
const float effectiveVolume = CrossfadeVolume * Volume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume); |
return pEngineChannel->GetMute() ? 0 : (Volume * CrossfadeVolume * pEngineChannel->GlobalVolume); |
712 |
#else |
#else |
713 |
const float effectiveVolume = CrossfadeVolume * Volume * pEngineChannel->GlobalVolume; |
return Volume * CrossfadeVolume * pEngineChannel->GlobalVolume; |
714 |
#endif |
#endif |
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fFinalVolume = effectiveVolume; |
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715 |
} |
} |
716 |
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717 |
void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) { |
void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) { |
722 |
if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale; |
if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale; |
723 |
float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127) |
float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127) |
724 |
if (cutoff > 1.0) cutoff = 1.0; |
if (cutoff > 1.0) cutoff = 1.0; |
725 |
cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN - CONFIG_FILTER_CUTOFF_MIN; |
cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449); |
726 |
VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time |
if (cutoff < 1.0) cutoff = 1.0; |
727 |
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728 |
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VCFCutoffCtrl.fvalue = cutoff - 1.0; // needed for initialization of fFinalCutoff next time |
729 |
fFinalCutoff = cutoff; |
fFinalCutoff = cutoff; |
730 |
} |
} |
731 |
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760 |
while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent; |
while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent; |
761 |
} |
} |
762 |
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763 |
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uint killPos; |
764 |
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if (itKillEvent) killPos = RTMath::Min(itKillEvent->FragmentPos(), pEngine->MaxFadeOutPos); |
765 |
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766 |
uint i = Skip; |
uint i = Skip; |
767 |
while (i < Samples) { |
while (i < Samples) { |
768 |
int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples); |
int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples); |
769 |
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770 |
// initialize all final synthesis parameters |
// initialize all final synthesis parameters |
771 |
finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend; |
finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend; |
772 |
#if CONFIG_PROCESS_MUTED_CHANNELS |
fFinalVolume = getVolume(); |
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fFinalVolume = this->Volume * this->CrossfadeVolume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume); |
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#else |
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fFinalVolume = this->Volume * this->CrossfadeVolume * pEngineChannel->GlobalVolume; |
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#endif |
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773 |
fFinalCutoff = VCFCutoffCtrl.fvalue; |
fFinalCutoff = VCFCutoffCtrl.fvalue; |
774 |
fFinalResonance = VCFResonanceCtrl.fvalue; |
fFinalResonance = VCFResonanceCtrl.fvalue; |
775 |
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779 |
// process transition events (note on, note off & sustain pedal) |
// process transition events (note on, note off & sustain pedal) |
780 |
processTransitionEvents(itNoteEvent, iSubFragmentEnd); |
processTransitionEvents(itNoteEvent, iSubFragmentEnd); |
781 |
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782 |
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// if the voice was killed in this subfragment switch EG1 to fade out stage |
783 |
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if (itKillEvent && killPos <= iSubFragmentEnd) { |
784 |
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EG1.enterFadeOutStage(); |
785 |
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itKillEvent = Pool<Event>::Iterator(); |
786 |
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} |
787 |
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788 |
// process envelope generators |
// process envelope generators |
789 |
switch (EG1.getSegmentType()) { |
switch (EG1.getSegmentType()) { |
790 |
case EGADSR::segment_lin: |
case EGADSR::segment_lin: |
808 |
fFinalCutoff *= EG2.getLevel(); |
fFinalCutoff *= EG2.getLevel(); |
809 |
break; // noop |
break; // noop |
810 |
} |
} |
811 |
if (EG3.active()) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(EG3.render()); |
if (EG3.active()) finalSynthesisParameters.fFinalPitch *= EG3.render(); |
812 |
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813 |
// process low frequency oscillators |
// process low frequency oscillators |
814 |
if (bLFO1Enabled) fFinalVolume *= pLFO1->render(); |
if (bLFO1Enabled) fFinalVolume *= pLFO1->render(); |
817 |
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818 |
// if filter enabled then update filter coefficients |
// if filter enabled then update filter coefficients |
819 |
if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) { |
if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) { |
820 |
finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate); |
finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff + 1.0, fFinalResonance, pEngine->SampleRate); |
821 |
finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate); |
finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff + 1.0, fFinalResonance, pEngine->SampleRate); |
822 |
} |
} |
823 |
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824 |
// do we need resampling? |
// do we need resampling? |
829 |
SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired); |
SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired); |
830 |
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831 |
// prepare final synthesis parameters structure |
// prepare final synthesis parameters structure |
832 |
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finalSynthesisParameters.uiToGo = iSubFragmentEnd - i; |
833 |
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#ifdef CONFIG_INTERPOLATE_VOLUME |
834 |
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finalSynthesisParameters.fFinalVolumeDeltaLeft = |
835 |
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(fFinalVolume * PanLeft - finalSynthesisParameters.fFinalVolumeLeft) / finalSynthesisParameters.uiToGo; |
836 |
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finalSynthesisParameters.fFinalVolumeDeltaRight = |
837 |
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(fFinalVolume * PanRight - finalSynthesisParameters.fFinalVolumeRight) / finalSynthesisParameters.uiToGo; |
838 |
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#else |
839 |
finalSynthesisParameters.fFinalVolumeLeft = fFinalVolume * PanLeft; |
finalSynthesisParameters.fFinalVolumeLeft = fFinalVolume * PanLeft; |
840 |
finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight; |
finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight; |
841 |
finalSynthesisParameters.uiToGo = iSubFragmentEnd - i; |
#endif |
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|
842 |
// render audio for one subfragment |
// render audio for one subfragment |
843 |
RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop); |
RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop); |
844 |
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845 |
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// stop the rendering if volume EG is finished |
846 |
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if (EG1.getSegmentType() == EGADSR::segment_end) break; |
847 |
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848 |
const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch; |
const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch; |
849 |
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850 |
// increment envelopes' positions |
// increment envelopes' positions |
870 |
} |
} |
871 |
} |
} |
872 |
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873 |
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/** @brief Update current portamento position. |
874 |
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* |
875 |
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* Will be called when portamento mode is enabled to get the final |
876 |
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* portamento position of this active voice from where the next voice(s) |
877 |
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* might continue to slide on. |
878 |
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* |
879 |
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* @param itNoteOffEvent - event which causes this voice to die soon |
880 |
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*/ |
881 |
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void Voice::UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent) { |
882 |
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const float fFinalEG3Level = EG3.level(itNoteOffEvent->FragmentPos()); |
883 |
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pEngineChannel->PortamentoPos = (float) MIDIKey + RTMath::FreqRatioToCents(fFinalEG3Level) * 0.01f; |
884 |
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} |
885 |
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886 |
/** |
/** |
887 |
* Immediately kill the voice. This method should not be used to kill |
* Immediately kill the voice. This method should not be used to kill |
888 |
* a normal, active voice, because it doesn't take care of things like |
* a normal, active voice, because it doesn't take care of things like |