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 - 2015 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> SfzVoiceBase;

    Voice::Voice(): SfzVoiceBase(&SignalRack), SignalRack(this) {
        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  = (uint)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) * pRegion->amplitude / 100;
    }

    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: ^^^
    }

    void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
        //TODO: ...
    }

    void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
        //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 %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
        if (itEvent->Type == Event::type_control_change ||
            (Type & Voice::type_controller_triggered) ||
            itEvent->Param.Note.Key != HostKey()) {
            dmsg(4,("Voice %p - kill", (void*)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() {
        AbstractVoice::SetSampleStartOffset();

        if (DiskVoice && Pos > pSample->MaxOffset) {
            // The offset is applied to the RAM buffer
            finalSynthesisParameters.dPos = 0;
            Pos = 0;
        }
    }

    void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
        SignalRack.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
    }

    int Voice::CalculatePan(uint8_t pan) {
        // the value isn't limited to [0, 127] here, as this is done
        // later in SignalUnit.CalculatePan
        return pan + RgnInfo.Pan;
    }

}} // namespace LinuxSampler::sfz
1	/***************************************************************************
2	* *
3	* LinuxSampler - modular, streaming capable sampler *
4	* *
5	* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6	* Copyright (C) 2005 - 2008 Christian Schoenebeck *
7	* Copyright (C) 2009 - 2015 Christian Schoenebeck and Grigor Iliev *
8	* *
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	#include "Voice.h"
26
27	#include "Engine.h"
28	#include "EngineChannel.h"
29
30	#define LN_10_DIV_20 0.115129254649702
31
32	namespace LinuxSampler { namespace sfz {
33
34	typedef LinuxSampler::VoiceBase<EngineChannel, ::sfz::Region, Sample, DiskThread> SfzVoiceBase;
35
36	Voice::Voice(): SfzVoiceBase(&SignalRack), SignalRack(this) {
37	pEngine = NULL;
38	bEqSupport = true;
39	}
40
41	Voice::~Voice() {
42
43	}
44
45	EngineChannel* Voice::GetSfzEngineChannel() {
46	return static_cast<EngineChannel*>(pEngineChannel);
47	}
48
49	void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
50	Engine* engine = static_cast<Engine*>(pEngine);
51	this->pEngine = engine;
52	this->pDiskThread = engine->pDiskThread;
53	dmsg(6,("Voice::SetEngine()\n"));
54	}
55
56	Voice::SampleInfo Voice::GetSampleInfo() {
57	SampleInfo si;
58	si.SampleRate = pSample->GetSampleRate();
59	si.ChannelCount = pSample->GetChannelCount();
60	si.FrameSize = pSample->GetFrameSize();
61	si.BitDepth = (pSample->GetFrameSize() / pSample->GetChannelCount()) * 8;
62	si.TotalFrameCount = (uint)pSample->GetTotalFrameCount();
63
64	si.HasLoops = pRegion->HasLoop();
65	si.LoopStart = pRegion->GetLoopStart();
66	si.LoopLength = pRegion->GetLoopEnd() - pRegion->GetLoopStart();
67	si.LoopPlayCount = pRegion->GetLoopCount();
68	si.Unpitched = pRegion->pitch_keytrack == 0;
69	return si;
70	}
71
72	Voice::RegionInfo Voice::GetRegionInfo() {
73	RegionInfo ri;
74	ri.UnityNote = pRegion->pitch_keycenter;
75	ri.FineTune = pRegion->tune + pRegion->transpose * 100;
76	ri.Pan = int(pRegion->pan * 0.63); // convert from -100..100 to -64..63
77	ri.SampleStartOffset = pRegion->offset ? *(pRegion->offset) : 0;
78
79	ri.VCFEnabled = pRegion->cutoff;
80	switch (pRegion->fil_type) {
81	case ::sfz::LPF_1P:
82	ri.VCFType = Filter::vcf_type_1p_lowpass;
83	break;
84	case ::sfz::LPF_2P:
85	ri.VCFType = Filter::vcf_type_2p_lowpass;
86	break;
87	case ::sfz::LPF_4P:
88	ri.VCFType = Filter::vcf_type_4p_lowpass;
89	break;
90	case ::sfz::LPF_6P:
91	ri.VCFType = Filter::vcf_type_6p_lowpass;
92	break;
93	case ::sfz::HPF_1P:
94	ri.VCFType = Filter::vcf_type_1p_highpass;
95	break;
96	case ::sfz::HPF_2P:
97	ri.VCFType = Filter::vcf_type_2p_highpass;
98	break;
99	case ::sfz::HPF_4P:
100	ri.VCFType = Filter::vcf_type_4p_highpass;
101	break;
102	case ::sfz::HPF_6P:
103	ri.VCFType = Filter::vcf_type_6p_highpass;
104	break;
105	case ::sfz::BPF_1P:
106	case ::sfz::BPF_2P:
107	ri.VCFType = Filter::vcf_type_2p_bandpass;
108	break;
109	case ::sfz::BRF_1P:
110	case ::sfz::BRF_2P:
111	ri.VCFType = Filter::vcf_type_2p_bandreject;
112	break;
113	case ::sfz::APF_1P:
114	case ::sfz::PKF_2P:
115	default:
116	ri.VCFEnabled = false;
117	break;
118	}
119
120	ri.VCFResonance = pRegion->resonance;
121
122	// rt_decay is in dB. Precalculate a suitable value for exp in
123	// GetReleaseTriggerAttenuation: -ln(10) / 20 * rt_decay
124	ri.ReleaseTriggerDecay = -LN_10_DIV_20 * pRegion->rt_decay;
125
126	return ri;
127	}
128
129	Voice::InstrumentInfo Voice::GetInstrumentInfo() {
130	InstrumentInfo ii;
131	ii.FineTune = 0; // TODO:
132	ii.PitchbendRange = 2; // TODO:
133
134	return ii;
135	}
136
137	double Voice::GetSampleAttenuation() {
138	return exp(LN_10_DIV_20 * pRegion->volume) * pRegion->amplitude / 100;
139	}
140
141	double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
142	float offset = -pRegion->amp_veltrack;
143	if (offset <= 0) offset += 100;
144	return (offset + pRegion->amp_veltrack * pRegion->amp_velcurve[MIDIKeyVelocity]) / 100;
145	}
146
147	double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
148	return 127.0 / MIDIKeyVelocity;
149	}
150
151	void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
152	/*if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
153	if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
154	itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
155	CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
156	}
157	}*/ // TODO: ^^^
158	}
159
160	void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
161	//TODO: ...
162	}
163
164	void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
165	//TODO: ...
166	}
167
168	double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
169	/*float crossfadeVolume;
170	switch (pRegion->AttenuationController.type) {
171	case ::gig::attenuation_ctrl_t::type_channelaftertouch:
172	crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[128])];
173	break;
174	case ::gig::attenuation_ctrl_t::type_velocity:
175	crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
176	break;
177	case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
178	crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
179	break;
180	case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
181	default:
182	crossfadeVolume = 1.0f;
183	}
184
185	return crossfadeVolume;*/ // TODO: ^^^
186	return 1.0f;
187	}
188
189	double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
190	/*double eg1controllervalue = 0;
191	switch (pRegion->EG1Controller.type) {
192	case ::gig::eg1_ctrl_t::type_none: // no controller defined
193	eg1controllervalue = 0;
194	break;
195	case ::gig::eg1_ctrl_t::type_channelaftertouch:
196	eg1controllervalue = GetSfzEngineChannel()->ControllerTable[128];
197	break;
198	case ::gig::eg1_ctrl_t::type_velocity:
199	eg1controllervalue = MIDIKeyVelocity;
200	break;
201	case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
202	eg1controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
203	break;
204	}
205	if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
206
207	return eg1controllervalue;*/ // TODO: ^^^
208	return 0;
209	}
210
211	Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
212	/*EGInfo eg;
213	// (eg1attack is different from the others)
214	eg.Attack = (pRegion->EG1ControllerAttackInfluence) ?
215	1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
216	1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
217	eg.Decay = (pRegion->EG1ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence) * eg1ControllerValue : 1.0;
218	eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
219
220	return eg;*/ // TODO: ^^^
221	EGInfo eg;
222	eg.Attack = 1.0;
223	eg.Decay = 1.0;
224	eg.Release = 1.0;
225	return eg;
226	}
227
228	double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
229	/*double eg2controllervalue = 0;
230	switch (pRegion->EG2Controller.type) {
231	case ::gig::eg2_ctrl_t::type_none: // no controller defined
232	eg2controllervalue = 0;
233	break;
234	case ::gig::eg2_ctrl_t::type_channelaftertouch:
235	eg2controllervalue = GetSfzEngineChannel()->ControllerTable[128];
236	break;
237	case ::gig::eg2_ctrl_t::type_velocity:
238	eg2controllervalue = MIDIKeyVelocity;
239	break;
240	case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
241	eg2controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
242	break;
243	}
244	if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
245
246	return eg2controllervalue;*/ // TODO: ^^^
247	return 0;
248	}
249
250	Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
251	/*EGInfo eg;
252	eg.Attack = (pRegion->EG2ControllerAttackInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence) * eg2ControllerValue : 1.0;
253	eg.Decay = (pRegion->EG2ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence) * eg2ControllerValue : 1.0;
254	eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
255
256	return eg;*/ // TODO: ^^^
257	EGInfo eg;
258	eg.Attack = 1.0;
259	eg.Decay = 1.0;
260	eg.Release = 1.0;
261	return eg;
262	}
263
264	float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
265	float cutoff = *pRegion->cutoff;
266	cutoff *= RTMath::CentsToFreqRatioUnlimited(
267	MIDIKeyVelocity / 127.0f * pRegion->fil_veltrack +
268	(MIDIKey() - pRegion->fil_keycenter) * pRegion->fil_keytrack);
269	return cutoff;
270	}
271
272	float Voice::CalculateFinalCutoff(float cutoffBase) {
273	float cutoff = cutoffBase;
274	if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate;
275	return cutoff;
276	}
277
278	float Voice::GetReleaseTriggerAttenuation(float noteLength) {
279	// pow(10, -rt_decay * noteLength / 20):
280	return expf(RgnInfo.ReleaseTriggerDecay * noteLength);
281	}
282
283	void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
284	dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
285	if (itEvent->Type == Event::type_control_change \|\|
286	(Type & Voice::type_controller_triggered) \|\|
287	itEvent->Param.Note.Key != HostKey()) {
288	dmsg(4,("Voice %p - kill", (void*)this));
289	if (pRegion->off_mode == ::sfz::OFF_NORMAL) {
290	// turn off the voice by entering release envelope stage
291	EnterReleaseStage();
292	} else {
293	// kill the voice fast
294	SignalRack.EnterFadeOutStage();
295	}
296	}
297	}
298
299	void Voice::SetSampleStartOffset() {
300	AbstractVoice::SetSampleStartOffset();
301
302	if (DiskVoice && Pos > pSample->MaxOffset) {
303	// The offset is applied to the RAM buffer
304	finalSynthesisParameters.dPos = 0;
305	Pos = 0;
306	}
307	}
308
309	void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
310	SignalRack.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
311	}
312
313	int Voice::CalculatePan(uint8_t pan) {
314	// the value isn't limited to [0, 127] here, as this is done
315	// later in SignalUnit.CalculatePan
316	return pan + RgnInfo.Pan;
317	}
318
319	}} // namespace LinuxSampler::sfz