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/*************************************************************************** |
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* * |
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* LinuxSampler - modular, streaming capable sampler * |
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* * |
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* Copyright (C) 2011 Grigor Iliev * |
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* * |
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* 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 * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This program is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this program; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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|
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#ifndef __LS_SFZSIGNALUNITRACK_H__ |
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#define __LS_SFZSIGNALUNITRACK_H__ |
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|
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#include "../common/SignalUnitRack.h" |
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#include "EG.h" |
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#include "EGADSR.h" |
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|
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namespace LinuxSampler { namespace sfz { |
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const int MaxUnitCount = 1000; |
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const int maxEgCount = 100; // Maximum number of v2 envelope generators |
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const int maxLfoCount = 100; // Maximum number of v2 LFOs |
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|
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class Voice; |
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class SfzSignalUnitRack; |
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|
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class SfzSignalUnit: public SignalUnit { |
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public: |
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Voice* pVoice; |
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|
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SfzSignalUnit(SfzSignalUnitRack* rack); |
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SfzSignalUnit(const SfzSignalUnit& Unit): SignalUnit(Unit.pRack) { Copy(Unit); } |
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|
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void Copy(const SfzSignalUnit& Unit) { |
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pVoice = Unit.pVoice; |
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|
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SignalUnit::Copy(Unit); |
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} |
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|
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double GetSampleRate(); |
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}; |
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|
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template <class T> |
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class EGUnit : public SfzSignalUnit { |
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public: |
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::sfz::EG* pEGInfo; |
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T EG; |
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|
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EGUnit(SfzSignalUnitRack* rack): SfzSignalUnit(rack), pEGInfo(NULL) { } |
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EGUnit(const EGUnit& Unit): SfzSignalUnit(Unit.pRack) { Copy(Unit); } |
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void operator=(const EGUnit& Unit) { Copy(Unit); } |
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|
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void Copy(const EGUnit& Unit) { |
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pEGInfo = Unit.pEGInfo; |
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|
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SfzSignalUnit::Copy(Unit); |
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} |
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|
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virtual bool Active() { return EG.active(); } |
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virtual float GetLevel() { return EG.getLevel(); } |
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|
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virtual void EnterReleaseStage() { EG.update(EG::event_release, GetSampleRate()); } |
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virtual void CancelRelease() { EG.update(EG::event_cancel_release, GetSampleRate()); } |
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|
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virtual void Increment() { |
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if (DelayStage()) return; |
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|
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SfzSignalUnit::Increment(); |
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if (!EG.active()) return; |
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|
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switch (EG.getSegmentType()) { |
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case EG::segment_lin: |
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EG.processLin(); |
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break; |
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case EG::segment_exp: |
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EG.processExp(); |
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break; |
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case EG::segment_end: |
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EG.getLevel(); |
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break; // noop |
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case EG::segment_pow: |
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EG.processPow(); |
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break; |
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} |
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|
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if (EG.active()) { |
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EG.increment(1); |
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if (!EG.toStageEndLeft()) EG.update(EG::event_stage_end, GetSampleRate()); |
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} |
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} |
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}; |
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|
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class EGv1Unit: public EGUnit<EGADSR> { |
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public: |
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EGv1Unit(SfzSignalUnitRack* rack): EGUnit<EGADSR>(rack) { } |
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virtual void Trigger(); |
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}; |
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|
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class EGv2Unit: public EGUnit< ::LinuxSampler::sfz::EG> { |
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public: |
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EGv2Unit(SfzSignalUnitRack* rack): EGUnit< ::LinuxSampler::sfz::EG>(rack) { } |
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virtual void Trigger(); |
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}; |
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|
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|
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|
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class EndpointUnit : public EndpointSignalUnit { |
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public: |
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Voice* pVoice; |
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|
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EndpointUnit(SfzSignalUnitRack* rack); |
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|
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virtual void Trigger(); |
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|
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/** The endpoint should be active until the volume EG is active. */ |
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virtual bool Active(); |
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|
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virtual float GetVolume(); |
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virtual float GetFilterCutoff(); |
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virtual float GetPitch(); |
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virtual float GetResonance(); |
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|
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SfzSignalUnitRack* const GetRack(); |
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}; |
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|
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|
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class SfzSignalUnitRack : public SignalUnitRack { |
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private: |
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EndpointUnit suEndpoint; |
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EGv1Unit suVolEG; |
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|
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FixedArray<EGv2Unit*> EGs; |
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|
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// used for optimization - contains only the ones that are modulating volume |
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FixedArray<EGv2Unit*> volEGs; |
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|
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// used for optimization - contains only the ones that are modulating pitch |
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FixedArray<EGv2Unit*> pitchEGs; |
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|
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|
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public: |
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Voice* const pVoice; |
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|
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/** |
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* @param Voice The voice to which this rack belongs. |
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*/ |
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SfzSignalUnitRack(Voice* voice); |
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~SfzSignalUnitRack(); |
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|
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virtual EndpointSignalUnit* GetEndpointUnit(); |
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|
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virtual void Trigger(); |
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virtual void EnterFadeOutStage(); |
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|
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friend class EndpointUnit; |
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}; |
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}} // namespace LinuxSampler::sfz |
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|
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#endif /* __LS_SFZSIGNALUNITRACK_H__ */ |
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