engines/sfz/Voice.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
 *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
 *   Copyright (C) 2009 - 2012 Christian Schoenebeck and Grigor Iliev      *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the Free Software           *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#include "Voice.h"

#include "Engine.h"
#include "EngineChannel.h"

#define LN_10_DIV_20 0.115129254649702

namespace LinuxSampler { namespace sfz {

    typedef LinuxSampler::VoiceBase<EngineChannel, ::sfz::Region, Sample, DiskThread> SfzVoice;
    Voice::Voice(): SignalRack(this), SfzVoice(&SignalRack) {
        pEngine     = NULL;
        bEqSupport = true;
    }

    Voice::~Voice() {

    }

    EngineChannel* Voice::GetSfzEngineChannel() {
        return static_cast<EngineChannel*>(pEngineChannel);
    }

    void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
        Engine* engine = static_cast<Engine*>(pEngine);
        this->pEngine     = engine;
        this->pDiskThread = engine->pDiskThread;
        dmsg(6,("Voice::SetEngine()\n"));
    }

    Voice::SampleInfo Voice::GetSampleInfo() {
        SampleInfo si;
        si.SampleRate       = pSample->GetSampleRate();
        si.ChannelCount     = pSample->GetChannelCount();
        si.FrameSize        = pSample->GetFrameSize();
        si.BitDepth         = (pSample->GetFrameSize() / pSample->GetChannelCount()) * 8;
        si.TotalFrameCount  = pSample->GetTotalFrameCount();

        si.HasLoops       = pRegion->HasLoop();
        si.LoopStart      = pRegion->GetLoopStart();
        si.LoopLength     = pRegion->GetLoopEnd() - pRegion->GetLoopStart();
        si.LoopPlayCount  = pRegion->GetLoopCount();
        si.Unpitched      = pRegion->pitch_keytrack == 0;
        return si;
    }

    Voice::RegionInfo Voice::GetRegionInfo() {
        RegionInfo ri;
        ri.UnityNote = pRegion->pitch_keycenter;
        ri.FineTune  = pRegion->tune + pRegion->transpose * 100;
        ri.Pan       = int(pRegion->pan * 0.63); // convert from -100..100 to -64..63
        ri.SampleStartOffset = pRegion->offset ? *(pRegion->offset) : 0;

        ri.VCFEnabled    = pRegion->cutoff;
        switch (pRegion->fil_type) {
        case ::sfz::LPF_1P:
            ri.VCFType = Filter::vcf_type_1p_lowpass;
            break;
        case ::sfz::LPF_2P:
            ri.VCFType = Filter::vcf_type_2p_lowpass;
            break;
        case ::sfz::LPF_4P:
            ri.VCFType = Filter::vcf_type_4p_lowpass;
            break;
        case ::sfz::LPF_6P:
            ri.VCFType = Filter::vcf_type_6p_lowpass;
            break;
        case ::sfz::HPF_1P:
            ri.VCFType = Filter::vcf_type_1p_highpass;
            break;
        case ::sfz::HPF_2P:
            ri.VCFType = Filter::vcf_type_2p_highpass;
            break;
        case ::sfz::HPF_4P:
            ri.VCFType = Filter::vcf_type_4p_highpass;
            break;
        case ::sfz::HPF_6P:
            ri.VCFType = Filter::vcf_type_6p_highpass;
            break;
        case ::sfz::BPF_1P:
        case ::sfz::BPF_2P:
            ri.VCFType = Filter::vcf_type_2p_bandpass;
            break;
        case ::sfz::BRF_1P:
        case ::sfz::BRF_2P:
            ri.VCFType = Filter::vcf_type_2p_bandreject;
            break;
        case ::sfz::APF_1P:
        case ::sfz::PKF_2P:
        default:
            ri.VCFEnabled = false;
            break;
        }

        ri.VCFResonance  = pRegion->resonance;

        // rt_decay is in dB. Precalculate a suitable value for exp in
        // GetReleaseTriggerAttenuation: -ln(10) / 20 * rt_decay
        ri.ReleaseTriggerDecay = -LN_10_DIV_20 * pRegion->rt_decay;

        return ri;
    }

    Voice::InstrumentInfo Voice::GetInstrumentInfo() {
        InstrumentInfo ii;
        ii.FineTune = 0; // TODO: 
        ii.PitchbendRange = 2; // TODO: 

        return ii;
    }

    double Voice::GetSampleAttenuation() {
        return exp(LN_10_DIV_20 * pRegion->volume);
    }

    double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
        float offset = -pRegion->amp_veltrack;
        if (offset <= 0) offset += 100;
        return (offset + pRegion->amp_veltrack * pRegion->amp_velcurve[MIDIKeyVelocity]) / 100;
    }

    double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
        return 127.0 / MIDIKeyVelocity;
    }

    void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
        /*if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
            if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
                itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
                CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
            }
        }*/ // TODO: ^^^
    }

    double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
        /*float crossfadeVolume;
        switch (pRegion->AttenuationController.type) {
            case ::gig::attenuation_ctrl_t::type_channelaftertouch:
                crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[128])];
                break;
            case ::gig::attenuation_ctrl_t::type_velocity:
                crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
                break;
            case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
                crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
                break;
            case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
            default:
                crossfadeVolume = 1.0f;
        }

        return crossfadeVolume;*/ // TODO: ^^^
        return 1.0f;
    }

    double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
        /*double eg1controllervalue = 0;
        switch (pRegion->EG1Controller.type) {
            case ::gig::eg1_ctrl_t::type_none: // no controller defined
                eg1controllervalue = 0;
                break;
            case ::gig::eg1_ctrl_t::type_channelaftertouch:
                eg1controllervalue = GetSfzEngineChannel()->ControllerTable[128];
                break;
            case ::gig::eg1_ctrl_t::type_velocity:
                eg1controllervalue = MIDIKeyVelocity;
                break;
            case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
                eg1controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
                break;
        }
        if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;

        return eg1controllervalue;*/ // TODO: ^^^
        return 0;
    }

    Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
        /*EGInfo eg;
        // (eg1attack is different from the others)
        eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
            1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
                                  1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
        eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
        eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;

        return eg;*/ // TODO: ^^^
        EGInfo eg;
        eg.Attack = 1.0;
        eg.Decay = 1.0;
        eg.Release = 1.0;
        return eg;
    }

    double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
        /*double eg2controllervalue = 0;
        switch (pRegion->EG2Controller.type) {
            case ::gig::eg2_ctrl_t::type_none: // no controller defined
                eg2controllervalue = 0;
                break;
            case ::gig::eg2_ctrl_t::type_channelaftertouch:
                eg2controllervalue = GetSfzEngineChannel()->ControllerTable[128];
                break;
            case ::gig::eg2_ctrl_t::type_velocity:
                eg2controllervalue = MIDIKeyVelocity;
                break;
            case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
                eg2controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
                break;
        }
        if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;

        return eg2controllervalue;*/ // TODO: ^^^
        return 0;
    }

    Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
        /*EGInfo eg;
        eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
        eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
        eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;

        return eg;*/ // TODO: ^^^
        EGInfo eg;
        eg.Attack = 1.0;
        eg.Decay = 1.0;
        eg.Release = 1.0;
        return eg;
    }

    float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
        float cutoff = *pRegion->cutoff;
        cutoff *= RTMath::CentsToFreqRatioUnlimited(
            MIDIKeyVelocity / 127.0f * pRegion->fil_veltrack +
            (MIDIKey - pRegion->fil_keycenter) * pRegion->fil_keytrack);
        return cutoff;
    }

    float Voice::CalculateFinalCutoff(float cutoffBase) {
        float cutoff = cutoffBase;
        if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate;
        return cutoff;
    }

    float Voice::GetReleaseTriggerAttenuation(float noteLength) {
        // pow(10, -rt_decay * noteLength / 20):
        return expf(RgnInfo.ReleaseTriggerDecay * noteLength);
    }

    void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
        dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
        if (itEvent->Type == Event::type_control_change ||
            (Type & Voice::type_controller_triggered) ||
            itEvent->Param.Note.Key != MIDIKey) {
            dmsg(4,("Voice %x - kill", this));
            if (pRegion->off_mode == ::sfz::OFF_NORMAL) {
                // turn off the voice by entering release envelope stage
                EnterReleaseStage();
            } else {
                // kill the voice fast
                SignalRack.EnterFadeOutStage();
            }
        }
    }
    
    void Voice::SetSampleStartOffset() {
        if (DiskVoice && RgnInfo.SampleStartOffset > pSample->MaxOffset) {
            // The offset is applied to the RAM buffer
            finalSynthesisParameters.dPos = 0;
            Pos = 0;
        } else {
            finalSynthesisParameters.dPos = RgnInfo.SampleStartOffset; // offset where we should start playback of sample
            Pos = RgnInfo.SampleStartOffset;
        }
    }

}} // namespace LinuxSampler::sfz
1	iliev	2012	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5			* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6	persson	2055	* Copyright (C) 2005 - 2008 Christian Schoenebeck *
7	persson	2315	* Copyright (C) 2009 - 2012 Christian Schoenebeck and Grigor Iliev *
8	iliev	2012	* *
9			* This program is free software; you can redistribute it and/or modify *
10			* it under the terms of the GNU General Public License as published by *
11			* the Free Software Foundation; either version 2 of the License, or *
12			* (at your option) any later version. *
13			* *
14			* This program is distributed in the hope that it will be useful, *
15			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
16			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
17			* GNU General Public License for more details. *
18			* *
19			* You should have received a copy of the GNU General Public License *
20			* along with this program; if not, write to the Free Software *
21			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
22			* MA 02111-1307 USA *
23			***************************************************************************/
24
25	iliev	2015	#include "Voice.h"
26
27	iliev	2012	#include "Engine.h"
28			#include "EngineChannel.h"
29
30	persson	2072	#define LN_10_DIV_20 0.115129254649702
31
32	iliev	2012	namespace LinuxSampler { namespace sfz {
33
34	iliev	2218	typedef LinuxSampler::VoiceBase<EngineChannel, ::sfz::Region, Sample, DiskThread> SfzVoice;
35			Voice::Voice(): SignalRack(this), SfzVoice(&SignalRack) {
36	iliev	2012	pEngine = NULL;
37	iliev	2298	bEqSupport = true;
38	iliev	2012	}
39
40			Voice::~Voice() {
41	iliev	2015
42	iliev	2012	}
43
44	iliev	2015	EngineChannel* Voice::GetSfzEngineChannel() {
45			return static_cast<EngineChannel*>(pEngineChannel);
46			}
47
48	iliev	2012	void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
49			Engine* engine = static_cast<Engine*>(pEngine);
50			this->pEngine = engine;
51			this->pDiskThread = engine->pDiskThread;
52			dmsg(6,("Voice::SetEngine()\n"));
53			}
54
55	iliev	2015	Voice::SampleInfo Voice::GetSampleInfo() {
56			SampleInfo si;
57			si.SampleRate = pSample->GetSampleRate();
58			si.ChannelCount = pSample->GetChannelCount();
59			si.FrameSize = pSample->GetFrameSize();
60			si.BitDepth = (pSample->GetFrameSize() / pSample->GetChannelCount()) * 8;
61			si.TotalFrameCount = pSample->GetTotalFrameCount();
62	iliev	2012
63	iliev	2021	si.HasLoops = pRegion->HasLoop();
64			si.LoopStart = pRegion->GetLoopStart();
65			si.LoopLength = pRegion->GetLoopEnd() - pRegion->GetLoopStart();
66			si.LoopPlayCount = pRegion->GetLoopCount();
67			si.Unpitched = pRegion->pitch_keytrack == 0;
68	iliev	2015	return si;
69			}
70	iliev	2012
71	iliev	2015	Voice::RegionInfo Voice::GetRegionInfo() {
72			RegionInfo ri;
73	iliev	2018	ri.UnityNote = pRegion->pitch_keycenter;
74	persson	2086	ri.FineTune = pRegion->tune + pRegion->transpose * 100;
75	persson	2045	ri.Pan = int(pRegion->pan * 0.63); // convert from -100..100 to -64..63
76	iliev	2216	ri.SampleStartOffset = pRegion->offset ? *(pRegion->offset) : 0;
77	iliev	2012
78	persson	2175	ri.VCFEnabled = pRegion->cutoff;
79			switch (pRegion->fil_type) {
80			case ::sfz::LPF_1P:
81			ri.VCFType = Filter::vcf_type_1p_lowpass;
82			break;
83			case ::sfz::LPF_2P:
84			ri.VCFType = Filter::vcf_type_2p_lowpass;
85			break;
86			case ::sfz::LPF_4P:
87			ri.VCFType = Filter::vcf_type_4p_lowpass;
88			break;
89			case ::sfz::LPF_6P:
90			ri.VCFType = Filter::vcf_type_6p_lowpass;
91			break;
92			case ::sfz::HPF_1P:
93			ri.VCFType = Filter::vcf_type_1p_highpass;
94			break;
95			case ::sfz::HPF_2P:
96			ri.VCFType = Filter::vcf_type_2p_highpass;
97			break;
98			case ::sfz::HPF_4P:
99			ri.VCFType = Filter::vcf_type_4p_highpass;
100			break;
101			case ::sfz::HPF_6P:
102			ri.VCFType = Filter::vcf_type_6p_highpass;
103			break;
104			case ::sfz::BPF_1P:
105			case ::sfz::BPF_2P:
106			ri.VCFType = Filter::vcf_type_2p_bandpass;
107			break;
108			case ::sfz::BRF_1P:
109			case ::sfz::BRF_2P:
110			ri.VCFType = Filter::vcf_type_2p_bandreject;
111			break;
112			case ::sfz::APF_1P:
113			case ::sfz::PKF_2P:
114			default:
115			ri.VCFEnabled = false;
116			break;
117			}
118	iliev	2012
119	persson	2175	ri.VCFResonance = pRegion->resonance;
120
121	persson	2061	// rt_decay is in dB. Precalculate a suitable value for exp in
122			// GetReleaseTriggerAttenuation: -ln(10) / 20 * rt_decay
123	persson	2072	ri.ReleaseTriggerDecay = -LN_10_DIV_20 * pRegion->rt_decay;
124	iliev	2012
125	iliev	2015	return ri;
126			}
127	iliev	2012
128	iliev	2015	Voice::InstrumentInfo Voice::GetInstrumentInfo() {
129			InstrumentInfo ii;
130			ii.FineTune = 0; // TODO:
131			ii.PitchbendRange = 2; // TODO:
132
133			return ii;
134			}
135
136			double Voice::GetSampleAttenuation() {
137	persson	2072	return exp(LN_10_DIV_20 * pRegion->volume);
138	iliev	2015	}
139
140			double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
141	persson	2315	float offset = -pRegion->amp_veltrack;
142			if (offset <= 0) offset += 100;
143			return (offset + pRegion->amp_veltrack * pRegion->amp_velcurve[MIDIKeyVelocity]) / 100;
144	iliev	2015	}
145
146			double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
147	persson	2176	return 127.0 / MIDIKeyVelocity;
148	iliev	2015	}
149
150			void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
151			/*if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
152			if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
153			itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
154			CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
155			}
156			}*/ // TODO: ^^^
157			}
158
159			double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
160	iliev	2012	/*float crossfadeVolume;
161			switch (pRegion->AttenuationController.type) {
162			case ::gig::attenuation_ctrl_t::type_channelaftertouch:
163	iliev	2015	crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[128])];
164	iliev	2012	break;
165			case ::gig::attenuation_ctrl_t::type_velocity:
166	iliev	2015	crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
167	iliev	2012	break;
168			case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
169	iliev	2015	crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
170	iliev	2012	break;
171			case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
172			default:
173			crossfadeVolume = 1.0f;
174			}
175
176	iliev	2015	return crossfadeVolume;*/ // TODO: ^^^
177			return 1.0f;
178			}
179	iliev	2012
180	iliev	2015	double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
181			/*double eg1controllervalue = 0;
182			switch (pRegion->EG1Controller.type) {
183			case ::gig::eg1_ctrl_t::type_none: // no controller defined
184			eg1controllervalue = 0;
185			break;
186			case ::gig::eg1_ctrl_t::type_channelaftertouch:
187			eg1controllervalue = GetSfzEngineChannel()->ControllerTable[128];
188			break;
189			case ::gig::eg1_ctrl_t::type_velocity:
190			eg1controllervalue = MIDIKeyVelocity;
191			break;
192			case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
193			eg1controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
194			break;
195	iliev	2012	}
196	iliev	2015	if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
197	iliev	2012
198	iliev	2015	return eg1controllervalue;*/ // TODO: ^^^
199			return 0;
200			}
201	iliev	2012
202	iliev	2015	Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
203			/*EGInfo eg;
204			// (eg1attack is different from the others)
205			eg.Attack = (pRegion->EG1ControllerAttackInfluence) ?
206			1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
207			1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
208			eg.Decay = (pRegion->EG1ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence) * eg1ControllerValue : 1.0;
209			eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
210	iliev	2012
211	iliev	2015	return eg;*/ // TODO: ^^^
212			EGInfo eg;
213			eg.Attack = 1.0;
214			eg.Decay = 1.0;
215			eg.Release = 1.0;
216			return eg;
217			}
218	iliev	2012
219	persson	2176	double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
220	iliev	2015	/*double eg2controllervalue = 0;
221			switch (pRegion->EG2Controller.type) {
222			case ::gig::eg2_ctrl_t::type_none: // no controller defined
223			eg2controllervalue = 0;
224			break;
225			case ::gig::eg2_ctrl_t::type_channelaftertouch:
226			eg2controllervalue = GetSfzEngineChannel()->ControllerTable[128];
227			break;
228			case ::gig::eg2_ctrl_t::type_velocity:
229			eg2controllervalue = MIDIKeyVelocity;
230			break;
231			case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
232			eg2controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
233			break;
234	iliev	2012	}
235	iliev	2015	if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
236	iliev	2012
237	iliev	2015	return eg2controllervalue;*/ // TODO: ^^^
238			return 0;
239			}
240	iliev	2012
241	iliev	2015	Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
242			/*EGInfo eg;
243			eg.Attack = (pRegion->EG2ControllerAttackInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence) * eg2ControllerValue : 1.0;
244			eg.Decay = (pRegion->EG2ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence) * eg2ControllerValue : 1.0;
245			eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
246	iliev	2012
247	iliev	2015	return eg;*/ // TODO: ^^^
248			EGInfo eg;
249			eg.Attack = 1.0;
250			eg.Decay = 1.0;
251			eg.Release = 1.0;
252			return eg;
253			}
254	iliev	2012
255	iliev	2015	float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
256	persson	2175	float cutoff = *pRegion->cutoff;
257			cutoff *= RTMath::CentsToFreqRatioUnlimited(
258			MIDIKeyVelocity / 127.0f * pRegion->fil_veltrack +
259			(MIDIKey - pRegion->fil_keycenter) * pRegion->fil_keytrack);
260			return cutoff;
261	iliev	2012	}
262
263	iliev	2015	float Voice::CalculateFinalCutoff(float cutoffBase) {
264	iliev	2252	float cutoff = cutoffBase;
265	persson	2175	if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate;
266			return cutoff;
267	iliev	2012	}
268
269	persson	2061	float Voice::GetReleaseTriggerAttenuation(float noteLength) {
270			// pow(10, -rt_decay * noteLength / 20):
271			return expf(RgnInfo.ReleaseTriggerDecay * noteLength);
272			}
273
274	persson	2114	void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
275			dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
276	persson	2115	if (itEvent->Type == Event::type_control_change \|\|
277			(Type & Voice::type_controller_triggered) \|\|
278			itEvent->Param.Note.Key != MIDIKey) {
279	persson	2114	dmsg(4,("Voice %x - kill", this));
280			if (pRegion->off_mode == ::sfz::OFF_NORMAL) {
281			// turn off the voice by entering release envelope stage
282			EnterReleaseStage();
283			} else {
284			// kill the voice fast
285	iliev	2218	SignalRack.EnterFadeOutStage();
286	persson	2114	}
287			}
288			}
289	iliev	2216
290			void Voice::SetSampleStartOffset() {
291			if (DiskVoice && RgnInfo.SampleStartOffset > pSample->MaxOffset) {
292			// The offset is applied to the RAM buffer
293			finalSynthesisParameters.dPos = 0;
294			Pos = 0;
295			} else {
296			finalSynthesisParameters.dPos = RgnInfo.SampleStartOffset; // offset where we should start playback of sample
297			Pos = RgnInfo.SampleStartOffset;
298			}
299			}
300	persson	2114
301	iliev	2012	}} // namespace LinuxSampler::sfz