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 - 2011 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;
    }

    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.EG2PreAttack        = pRegion->fileg_start * 10;
        ri.EG2Attack           = pRegion->fileg_attack;
        //ri.EG2Hold             = pRegion->fileg_hold; // TODO: 
        ri.EG2Decay1           = pRegion->fileg_decay;
        ri.EG2Decay2           = pRegion->fileg_decay;
        ri.EG2Sustain          = pRegion->fileg_sustain * 10;
        ri.EG2InfiniteSustain  = true;
        ri.EG2Release          = pRegion->fileg_release;

        ri.EG3Attack     = pRegion->pitcheg_attack;
        ri.EG3Depth      = 0; // TODO:
        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) {
        return pRegion->amp_velcurve[MIDIKeyVelocity];
    }

    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: ^^^
    }

    void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
        int ccvalue = itEvent->Param.CC.Value;
        if (VCFCutoffCtrl.value == ccvalue) return;
        VCFCutoffCtrl.value = ccvalue;

        float cutoff = CutoffBase * RTMath::CentsToFreqRatioUnlimited(
            ccvalue / 127.0f * pRegion->cutoff_oncc[VCFCutoffCtrl.controller]);
        if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate;

        VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
        fFinalCutoff = cutoff;
    }

    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;
        if (VCFCutoffCtrl.controller) {
            int ccvalue = GetSfzEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
            cutoff = CutoffBase * RTMath::CentsToFreqRatioUnlimited(
                ccvalue / 127.0f * pRegion->cutoff_oncc[VCFCutoffCtrl.controller]);
        } else {
            cutoff = cutoffBase;
        }
        if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate;
        return cutoff;
    }

    uint8_t Voice::GetVCFCutoffCtrl() {
        // TODO: the sfz format allows several CC for the same
        // modulation destination. The Voice interface needs to be
        // changed to support that.
        if (pRegion->cutoff_cc) return pRegion->cutoff_cc;
        else if (pRegion->cutoff_chanaft) return 128;
        return 0;
    }

    uint8_t Voice::GetVCFResonanceCtrl() {
        /*uint8_t ctrl;
        switch (pRegion->VCFResonanceController) {
            case ::gig::vcf_res_ctrl_genpurpose3:
                ctrl = 18;
                break;
            case ::gig::vcf_res_ctrl_genpurpose4:
                ctrl = 19;
                break;
            case ::gig::vcf_res_ctrl_genpurpose5:
                ctrl = 80;
                break;
            case ::gig::vcf_res_ctrl_genpurpose6:
                ctrl = 81;
                break;
            case ::gig::vcf_res_ctrl_none:
            default:
                ctrl = 0;
        }

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

    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	2175	* Copyright (C) 2009 - 2011 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			}
38
39			Voice::~Voice() {
40	iliev	2015
41	iliev	2012	}
42
43	iliev	2015	EngineChannel* Voice::GetSfzEngineChannel() {
44			return static_cast<EngineChannel*>(pEngineChannel);
45			}
46
47	iliev	2012	void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
48			Engine* engine = static_cast<Engine*>(pEngine);
49			this->pEngine = engine;
50			this->pDiskThread = engine->pDiskThread;
51			dmsg(6,("Voice::SetEngine()\n"));
52			}
53
54	iliev	2015	Voice::SampleInfo Voice::GetSampleInfo() {
55			SampleInfo si;
56			si.SampleRate = pSample->GetSampleRate();
57			si.ChannelCount = pSample->GetChannelCount();
58			si.FrameSize = pSample->GetFrameSize();
59			si.BitDepth = (pSample->GetFrameSize() / pSample->GetChannelCount()) * 8;
60			si.TotalFrameCount = pSample->GetTotalFrameCount();
61	iliev	2012
62	iliev	2021	si.HasLoops = pRegion->HasLoop();
63			si.LoopStart = pRegion->GetLoopStart();
64			si.LoopLength = pRegion->GetLoopEnd() - pRegion->GetLoopStart();
65			si.LoopPlayCount = pRegion->GetLoopCount();
66			si.Unpitched = pRegion->pitch_keytrack == 0;
67	iliev	2015	return si;
68			}
69	iliev	2012
70	iliev	2015	Voice::RegionInfo Voice::GetRegionInfo() {
71			RegionInfo ri;
72	iliev	2018	ri.UnityNote = pRegion->pitch_keycenter;
73	persson	2086	ri.FineTune = pRegion->tune + pRegion->transpose * 100;
74	persson	2045	ri.Pan = int(pRegion->pan * 0.63); // convert from -100..100 to -64..63
75	iliev	2216	ri.SampleStartOffset = pRegion->offset ? *(pRegion->offset) : 0;
76	iliev	2012
77	persson	2055	ri.EG2PreAttack = pRegion->fileg_start * 10;
78	iliev	2018	ri.EG2Attack = pRegion->fileg_attack;
79			//ri.EG2Hold = pRegion->fileg_hold; // TODO:
80			ri.EG2Decay1 = pRegion->fileg_decay;
81			ri.EG2Decay2 = pRegion->fileg_decay;
82	persson	2055	ri.EG2Sustain = pRegion->fileg_sustain * 10;
83	iliev	2015	ri.EG2InfiniteSustain = true;
84	iliev	2018	ri.EG2Release = pRegion->fileg_release;
85	iliev	2012
86	iliev	2018	ri.EG3Attack = pRegion->pitcheg_attack;
87	iliev	2015	ri.EG3Depth = 0; // TODO:
88	persson	2175	ri.VCFEnabled = pRegion->cutoff;
89			switch (pRegion->fil_type) {
90			case ::sfz::LPF_1P:
91			ri.VCFType = Filter::vcf_type_1p_lowpass;
92			break;
93			case ::sfz::LPF_2P:
94			ri.VCFType = Filter::vcf_type_2p_lowpass;
95			break;
96			case ::sfz::LPF_4P:
97			ri.VCFType = Filter::vcf_type_4p_lowpass;
98			break;
99			case ::sfz::LPF_6P:
100			ri.VCFType = Filter::vcf_type_6p_lowpass;
101			break;
102			case ::sfz::HPF_1P:
103			ri.VCFType = Filter::vcf_type_1p_highpass;
104			break;
105			case ::sfz::HPF_2P:
106			ri.VCFType = Filter::vcf_type_2p_highpass;
107			break;
108			case ::sfz::HPF_4P:
109			ri.VCFType = Filter::vcf_type_4p_highpass;
110			break;
111			case ::sfz::HPF_6P:
112			ri.VCFType = Filter::vcf_type_6p_highpass;
113			break;
114			case ::sfz::BPF_1P:
115			case ::sfz::BPF_2P:
116			ri.VCFType = Filter::vcf_type_2p_bandpass;
117			break;
118			case ::sfz::BRF_1P:
119			case ::sfz::BRF_2P:
120			ri.VCFType = Filter::vcf_type_2p_bandreject;
121			break;
122			case ::sfz::APF_1P:
123			case ::sfz::PKF_2P:
124			default:
125			ri.VCFEnabled = false;
126			break;
127			}
128	iliev	2012
129	persson	2175	ri.VCFResonance = pRegion->resonance;
130
131	persson	2061	// rt_decay is in dB. Precalculate a suitable value for exp in
132			// GetReleaseTriggerAttenuation: -ln(10) / 20 * rt_decay
133	persson	2072	ri.ReleaseTriggerDecay = -LN_10_DIV_20 * pRegion->rt_decay;
134	iliev	2012
135	iliev	2015	return ri;
136			}
137	iliev	2012
138	iliev	2015	Voice::InstrumentInfo Voice::GetInstrumentInfo() {
139			InstrumentInfo ii;
140			ii.FineTune = 0; // TODO:
141			ii.PitchbendRange = 2; // TODO:
142
143			return ii;
144			}
145
146			double Voice::GetSampleAttenuation() {
147	persson	2072	return exp(LN_10_DIV_20 * pRegion->volume);
148	iliev	2015	}
149
150			double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
151	persson	2082	return pRegion->amp_velcurve[MIDIKeyVelocity];
152	iliev	2015	}
153
154			double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
155	persson	2176	return 127.0 / MIDIKeyVelocity;
156	iliev	2015	}
157
158			void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
159			/*if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
160			if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
161			itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
162			CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
163			}
164			}*/ // TODO: ^^^
165			}
166
167			void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
168	persson	2175	int ccvalue = itEvent->Param.CC.Value;
169	iliev	2015	if (VCFCutoffCtrl.value == ccvalue) return;
170	persson	2175	VCFCutoffCtrl.value = ccvalue;
171	iliev	2015
172	persson	2175	float cutoff = CutoffBase * RTMath::CentsToFreqRatioUnlimited(
173			ccvalue / 127.0f * pRegion->cutoff_oncc[VCFCutoffCtrl.controller]);
174			if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate;
175
176	iliev	2015	VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
177	persson	2175	fFinalCutoff = cutoff;
178	iliev	2015	}
179
180			double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
181	iliev	2012	/*float crossfadeVolume;
182			switch (pRegion->AttenuationController.type) {
183			case ::gig::attenuation_ctrl_t::type_channelaftertouch:
184	iliev	2015	crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[128])];
185	iliev	2012	break;
186			case ::gig::attenuation_ctrl_t::type_velocity:
187	iliev	2015	crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
188	iliev	2012	break;
189			case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
190	iliev	2015	crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
191	iliev	2012	break;
192			case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
193			default:
194			crossfadeVolume = 1.0f;
195			}
196
197	iliev	2015	return crossfadeVolume;*/ // TODO: ^^^
198			return 1.0f;
199			}
200	iliev	2012
201	iliev	2015	double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
202			/*double eg1controllervalue = 0;
203			switch (pRegion->EG1Controller.type) {
204			case ::gig::eg1_ctrl_t::type_none: // no controller defined
205			eg1controllervalue = 0;
206			break;
207			case ::gig::eg1_ctrl_t::type_channelaftertouch:
208			eg1controllervalue = GetSfzEngineChannel()->ControllerTable[128];
209			break;
210			case ::gig::eg1_ctrl_t::type_velocity:
211			eg1controllervalue = MIDIKeyVelocity;
212			break;
213			case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
214			eg1controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
215			break;
216	iliev	2012	}
217	iliev	2015	if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
218	iliev	2012
219	iliev	2015	return eg1controllervalue;*/ // TODO: ^^^
220			return 0;
221			}
222	iliev	2012
223	iliev	2015	Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
224			/*EGInfo eg;
225			// (eg1attack is different from the others)
226			eg.Attack = (pRegion->EG1ControllerAttackInfluence) ?
227			1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
228			1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
229			eg.Decay = (pRegion->EG1ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence) * eg1ControllerValue : 1.0;
230			eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
231	iliev	2012
232	iliev	2015	return eg;*/ // TODO: ^^^
233			EGInfo eg;
234			eg.Attack = 1.0;
235			eg.Decay = 1.0;
236			eg.Release = 1.0;
237			return eg;
238			}
239	iliev	2012
240	persson	2176	double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
241	iliev	2015	/*double eg2controllervalue = 0;
242			switch (pRegion->EG2Controller.type) {
243			case ::gig::eg2_ctrl_t::type_none: // no controller defined
244			eg2controllervalue = 0;
245			break;
246			case ::gig::eg2_ctrl_t::type_channelaftertouch:
247			eg2controllervalue = GetSfzEngineChannel()->ControllerTable[128];
248			break;
249			case ::gig::eg2_ctrl_t::type_velocity:
250			eg2controllervalue = MIDIKeyVelocity;
251			break;
252			case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
253			eg2controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
254			break;
255	iliev	2012	}
256	iliev	2015	if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
257	iliev	2012
258	iliev	2015	return eg2controllervalue;*/ // TODO: ^^^
259			return 0;
260			}
261	iliev	2012
262	iliev	2015	Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
263			/*EGInfo eg;
264			eg.Attack = (pRegion->EG2ControllerAttackInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence) * eg2ControllerValue : 1.0;
265			eg.Decay = (pRegion->EG2ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence) * eg2ControllerValue : 1.0;
266			eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
267	iliev	2012
268	iliev	2015	return eg;*/ // TODO: ^^^
269			EGInfo eg;
270			eg.Attack = 1.0;
271			eg.Decay = 1.0;
272			eg.Release = 1.0;
273			return eg;
274			}
275	iliev	2012
276	iliev	2015	float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
277	persson	2175	float cutoff = *pRegion->cutoff;
278			cutoff *= RTMath::CentsToFreqRatioUnlimited(
279			MIDIKeyVelocity / 127.0f * pRegion->fil_veltrack +
280			(MIDIKey - pRegion->fil_keycenter) * pRegion->fil_keytrack);
281			return cutoff;
282	iliev	2012	}
283
284	iliev	2015	float Voice::CalculateFinalCutoff(float cutoffBase) {
285	persson	2175	float cutoff;
286	iliev	2015	if (VCFCutoffCtrl.controller) {
287	persson	2175	int ccvalue = GetSfzEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
288			cutoff = CutoffBase * RTMath::CentsToFreqRatioUnlimited(
289			ccvalue / 127.0f * pRegion->cutoff_oncc[VCFCutoffCtrl.controller]);
290			} else {
291			cutoff = cutoffBase;
292	iliev	2012	}
293	persson	2175	if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate;
294			return cutoff;
295	iliev	2012	}
296
297	iliev	2015	uint8_t Voice::GetVCFCutoffCtrl() {
298	persson	2175	// TODO: the sfz format allows several CC for the same
299			// modulation destination. The Voice interface needs to be
300			// changed to support that.
301			if (pRegion->cutoff_cc) return pRegion->cutoff_cc;
302			else if (pRegion->cutoff_chanaft) return 128;
303	iliev	2015	return 0;
304	iliev	2012	}
305
306	iliev	2015	uint8_t Voice::GetVCFResonanceCtrl() {
307			/*uint8_t ctrl;
308			switch (pRegion->VCFResonanceController) {
309			case ::gig::vcf_res_ctrl_genpurpose3:
310			ctrl = 18;
311			break;
312			case ::gig::vcf_res_ctrl_genpurpose4:
313			ctrl = 19;
314			break;
315			case ::gig::vcf_res_ctrl_genpurpose5:
316			ctrl = 80;
317			break;
318			case ::gig::vcf_res_ctrl_genpurpose6:
319			ctrl = 81;
320			break;
321			case ::gig::vcf_res_ctrl_none:
322			default:
323			ctrl = 0;
324	iliev	2012	}
325
326	iliev	2015	return ctrl;*/ // TODO: ^^^
327			return 0;
328	iliev	2012	}
329
330	persson	2061	float Voice::GetReleaseTriggerAttenuation(float noteLength) {
331			// pow(10, -rt_decay * noteLength / 20):
332			return expf(RgnInfo.ReleaseTriggerDecay * noteLength);
333			}
334
335	persson	2114	void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
336			dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
337	persson	2115	if (itEvent->Type == Event::type_control_change \|\|
338			(Type & Voice::type_controller_triggered) \|\|
339			itEvent->Param.Note.Key != MIDIKey) {
340	persson	2114	dmsg(4,("Voice %x - kill", this));
341			if (pRegion->off_mode == ::sfz::OFF_NORMAL) {
342			// turn off the voice by entering release envelope stage
343			EnterReleaseStage();
344			} else {
345			// kill the voice fast
346	iliev	2218	SignalRack.EnterFadeOutStage();
347	persson	2114	}
348			}
349			}
350	iliev	2216
351			void Voice::SetSampleStartOffset() {
352			if (DiskVoice && RgnInfo.SampleStartOffset > pSample->MaxOffset) {
353			// The offset is applied to the RAM buffer
354			finalSynthesisParameters.dPos = 0;
355			Pos = 0;
356			} else {
357			finalSynthesisParameters.dPos = RgnInfo.SampleStartOffset; // offset where we should start playback of sample
358			Pos = RgnInfo.SampleStartOffset;
359			}
360			}
361	persson	2114
362	iliev	2012	}} // namespace LinuxSampler::sfz