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> 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) * 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 != MIDIKey) {
            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() {
        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;
        }
    }

    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> SfzVoice;
35	Voice::Voice(): SignalRack(this), SfzVoice(&SignalRack) {
36	pEngine = NULL;
37	bEqSupport = true;
38	}
39
40	Voice::~Voice() {
41
42	}
43
44	EngineChannel* Voice::GetSfzEngineChannel() {
45	return static_cast<EngineChannel*>(pEngineChannel);
46	}
47
48	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	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
63	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	return si;
69	}
70
71	Voice::RegionInfo Voice::GetRegionInfo() {
72	RegionInfo ri;
73	ri.UnityNote = pRegion->pitch_keycenter;
74	ri.FineTune = pRegion->tune + pRegion->transpose * 100;
75	ri.Pan = int(pRegion->pan * 0.63); // convert from -100..100 to -64..63
76	ri.SampleStartOffset = pRegion->offset ? *(pRegion->offset) : 0;
77
78	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
119	ri.VCFResonance = pRegion->resonance;
120
121	// rt_decay is in dB. Precalculate a suitable value for exp in
122	// GetReleaseTriggerAttenuation: -ln(10) / 20 * rt_decay
123	ri.ReleaseTriggerDecay = -LN_10_DIV_20 * pRegion->rt_decay;
124
125	return ri;
126	}
127
128	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	return exp(LN_10_DIV_20 * pRegion->volume) * pRegion->amplitude / 100;
138	}
139
140	double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
141	float offset = -pRegion->amp_veltrack;
142	if (offset <= 0) offset += 100;
143	return (offset + pRegion->amp_veltrack * pRegion->amp_velcurve[MIDIKeyVelocity]) / 100;
144	}
145
146	double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
147	return 127.0 / MIDIKeyVelocity;
148	}
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	void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
160	//TODO: ...
161	}
162
163	void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
164	//TODO: ...
165	}
166
167	double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
168	/*float crossfadeVolume;
169	switch (pRegion->AttenuationController.type) {
170	case ::gig::attenuation_ctrl_t::type_channelaftertouch:
171	crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[128])];
172	break;
173	case ::gig::attenuation_ctrl_t::type_velocity:
174	crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
175	break;
176	case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
177	crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
178	break;
179	case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
180	default:
181	crossfadeVolume = 1.0f;
182	}
183
184	return crossfadeVolume;*/ // TODO: ^^^
185	return 1.0f;
186	}
187
188	double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
189	/*double eg1controllervalue = 0;
190	switch (pRegion->EG1Controller.type) {
191	case ::gig::eg1_ctrl_t::type_none: // no controller defined
192	eg1controllervalue = 0;
193	break;
194	case ::gig::eg1_ctrl_t::type_channelaftertouch:
195	eg1controllervalue = GetSfzEngineChannel()->ControllerTable[128];
196	break;
197	case ::gig::eg1_ctrl_t::type_velocity:
198	eg1controllervalue = MIDIKeyVelocity;
199	break;
200	case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
201	eg1controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
202	break;
203	}
204	if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
205
206	return eg1controllervalue;*/ // TODO: ^^^
207	return 0;
208	}
209
210	Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
211	/*EGInfo eg;
212	// (eg1attack is different from the others)
213	eg.Attack = (pRegion->EG1ControllerAttackInfluence) ?
214	1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
215	1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
216	eg.Decay = (pRegion->EG1ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence) * eg1ControllerValue : 1.0;
217	eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
218
219	return eg;*/ // TODO: ^^^
220	EGInfo eg;
221	eg.Attack = 1.0;
222	eg.Decay = 1.0;
223	eg.Release = 1.0;
224	return eg;
225	}
226
227	double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
228	/*double eg2controllervalue = 0;
229	switch (pRegion->EG2Controller.type) {
230	case ::gig::eg2_ctrl_t::type_none: // no controller defined
231	eg2controllervalue = 0;
232	break;
233	case ::gig::eg2_ctrl_t::type_channelaftertouch:
234	eg2controllervalue = GetSfzEngineChannel()->ControllerTable[128];
235	break;
236	case ::gig::eg2_ctrl_t::type_velocity:
237	eg2controllervalue = MIDIKeyVelocity;
238	break;
239	case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
240	eg2controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
241	break;
242	}
243	if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
244
245	return eg2controllervalue;*/ // TODO: ^^^
246	return 0;
247	}
248
249	Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
250	/*EGInfo eg;
251	eg.Attack = (pRegion->EG2ControllerAttackInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence) * eg2ControllerValue : 1.0;
252	eg.Decay = (pRegion->EG2ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence) * eg2ControllerValue : 1.0;
253	eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
254
255	return eg;*/ // TODO: ^^^
256	EGInfo eg;
257	eg.Attack = 1.0;
258	eg.Decay = 1.0;
259	eg.Release = 1.0;
260	return eg;
261	}
262
263	float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
264	float cutoff = *pRegion->cutoff;
265	cutoff *= RTMath::CentsToFreqRatioUnlimited(
266	MIDIKeyVelocity / 127.0f * pRegion->fil_veltrack +
267	(MIDIKey - pRegion->fil_keycenter) * pRegion->fil_keytrack);
268	return cutoff;
269	}
270
271	float Voice::CalculateFinalCutoff(float cutoffBase) {
272	float cutoff = cutoffBase;
273	if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate;
274	return cutoff;
275	}
276
277	float Voice::GetReleaseTriggerAttenuation(float noteLength) {
278	// pow(10, -rt_decay * noteLength / 20):
279	return expf(RgnInfo.ReleaseTriggerDecay * noteLength);
280	}
281
282	void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
283	dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
284	if (itEvent->Type == Event::type_control_change \|\|
285	(Type & Voice::type_controller_triggered) \|\|
286	itEvent->Param.Note.Key != MIDIKey) {
287	dmsg(4,("Voice %p - kill", (void*)this));
288	if (pRegion->off_mode == ::sfz::OFF_NORMAL) {
289	// turn off the voice by entering release envelope stage
290	EnterReleaseStage();
291	} else {
292	// kill the voice fast
293	SignalRack.EnterFadeOutStage();
294	}
295	}
296	}
297
298	void Voice::SetSampleStartOffset() {
299	if (DiskVoice && RgnInfo.SampleStartOffset > pSample->MaxOffset) {
300	// The offset is applied to the RAM buffer
301	finalSynthesisParameters.dPos = 0;
302	Pos = 0;
303	} else {
304	finalSynthesisParameters.dPos = RgnInfo.SampleStartOffset; // offset where we should start playback of sample
305	Pos = RgnInfo.SampleStartOffset;
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