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 {

    Voice::Voice() {
        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 = 0; // TODO: 

        ri.EG1PreAttack        = pRegion->ampeg_start * 10;
        ri.EG1Attack           = pRegion->ampeg_attack;
        ri.EG1Hold             = pRegion->ampeg_hold;
        ri.EG1Decay1           = pRegion->ampeg_decay;
        ri.EG1Decay2           = pRegion->ampeg_decay;
        ri.EG1Sustain          = pRegion->ampeg_sustain * 10;
        ri.EG1InfiniteSustain  = true;
        ri.EG1Release          = pRegion->ampeg_release;

        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;
    }

    void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {

        // TODO: controller modulation

        // first check if there is a v2 EG for amplitude
        for (int i = 0 ; i < pRegion->eg.size() ; i++) {
            if (pRegion->eg[i].amplitude > 0) {
                // TODO: actually use the value of the amplitude parameter
                pEG1 = &EG1;
                EG1.trigger(pRegion->eg[i], sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE, velocity);
                return;
            }
        }

        // otherwise use the v1 EGADSR
        pEG1 = &EGADSR1;
        EGADSR1.trigger(uint(RgnInfo.EG1PreAttack),
                        std::max(0.0, RgnInfo.EG1Attack + pRegion->ampeg_vel2attack * velrelease),
                        std::max(0.0, RgnInfo.EG1Hold + pRegion->ampeg_vel2hold * velrelease),
                        std::max(0.0, RgnInfo.EG1Decay1 + pRegion->ampeg_vel2decay * velrelease),
                        uint(std::min(std::max(0.0, RgnInfo.EG1Sustain + 10 * pRegion->ampeg_vel2sustain * velrelease), 1000.0)),
                        std::max(0.0, RgnInfo.EG1Release + pRegion->ampeg_vel2release * velrelease),
                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
    }

    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;
    }

    void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {

        // TODO: the sfz filter EG should modulate cents, not hertz,
        // so we can't use the EG or EGADSR as it is. Disable for now.

        pEG2 = &EGADSR2;
        EGADSR2.trigger(0,
                        0,
                        false,
                        0,
                        1000,
                        0,
                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
    }

    void Voice::InitLFO1() {
        /*uint16_t lfo1_internal_depth;
        switch (pRegion->LFO1Controller) {
            case ::gig::lfo1_ctrl_internal:
                lfo1_internal_depth  = pRegion->LFO1InternalDepth;
                pLFO1->ExtController = 0; // no external controller
                bLFO1Enabled         = (lfo1_internal_depth > 0);
                break;
            case ::gig::lfo1_ctrl_modwheel:
                lfo1_internal_depth  = 0;
                pLFO1->ExtController = 1; // MIDI controller 1
                bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
                break;
            case ::gig::lfo1_ctrl_breath:
                lfo1_internal_depth  = 0;
                pLFO1->ExtController = 2; // MIDI controller 2
                bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
                break;
            case ::gig::lfo1_ctrl_internal_modwheel:
                lfo1_internal_depth  = pRegion->LFO1InternalDepth;
                pLFO1->ExtController = 1; // MIDI controller 1
                bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
                break;
            case ::gig::lfo1_ctrl_internal_breath:
                lfo1_internal_depth  = pRegion->LFO1InternalDepth;
                pLFO1->ExtController = 2; // MIDI controller 2
                bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
                break;
            default:
                lfo1_internal_depth  = 0;
                pLFO1->ExtController = 0; // no external controller
                bLFO1Enabled         = false;
        }
        if (bLFO1Enabled) {
            pLFO1->trigger(pRegion->LFO1Frequency,
                           start_level_min,
                           lfo1_internal_depth,
                           pRegion->LFO1ControlDepth,
                           pRegion->LFO1FlipPhase,
                           pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
            pLFO1->update(pLFO1->ExtController ? GetSfzEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
        }*/ // TODO: ^^^
        bLFO1Enabled = false;
    }

    void Voice::InitLFO2() {
        /*uint16_t lfo2_internal_depth;
        switch (pRegion->LFO2Controller) {
            case ::gig::lfo2_ctrl_internal:
                lfo2_internal_depth  = pRegion->LFO2InternalDepth;
                pLFO2->ExtController = 0; // no external controller
                bLFO2Enabled         = (lfo2_internal_depth > 0);
                break;
            case ::gig::lfo2_ctrl_modwheel:
                lfo2_internal_depth  = 0;
                pLFO2->ExtController = 1; // MIDI controller 1
                bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
                break;
            case ::gig::lfo2_ctrl_foot:
                lfo2_internal_depth  = 0;
                pLFO2->ExtController = 4; // MIDI controller 4
                bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
                break;
            case ::gig::lfo2_ctrl_internal_modwheel:
                lfo2_internal_depth  = pRegion->LFO2InternalDepth;
                pLFO2->ExtController = 1; // MIDI controller 1
                bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
                break;
            case ::gig::lfo2_ctrl_internal_foot:
                lfo2_internal_depth  = pRegion->LFO2InternalDepth;
                pLFO2->ExtController = 4; // MIDI controller 4
                bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
                break;
            default:
                lfo2_internal_depth  = 0;
                pLFO2->ExtController = 0; // no external controller
                bLFO2Enabled         = false;
        }
        if (bLFO2Enabled) {
            pLFO2->trigger(pRegion->LFO2Frequency,
                           start_level_max,
                           lfo2_internal_depth,
                           pRegion->LFO2ControlDepth,
                           pRegion->LFO2FlipPhase,
                           pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
            pLFO2->update(pLFO2->ExtController ? GetSfzEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
        }*/ // TODO: ^^^
        bLFO2Enabled = false;
    }

    void Voice::InitLFO3() {
        /*uint16_t lfo3_internal_depth;
        switch (pRegion->LFO3Controller) {
            case ::gig::lfo3_ctrl_internal:
                lfo3_internal_depth  = pRegion->LFO3InternalDepth;
                pLFO3->ExtController = 0; // no external controller
                bLFO3Enabled         = (lfo3_internal_depth > 0);
                break;
            case ::gig::lfo3_ctrl_modwheel:
                lfo3_internal_depth  = 0;
                pLFO3->ExtController = 1; // MIDI controller 1
                bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
                break;
            case ::gig::lfo3_ctrl_aftertouch:
                lfo3_internal_depth  = 0;
                pLFO3->ExtController = 128;
                bLFO3Enabled         = true;
                break;
            case ::gig::lfo3_ctrl_internal_modwheel:
                lfo3_internal_depth  = pRegion->LFO3InternalDepth;
                pLFO3->ExtController = 1; // MIDI controller 1
                bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
                break;
            case ::gig::lfo3_ctrl_internal_aftertouch:
                lfo3_internal_depth  = pRegion->LFO3InternalDepth;
                pLFO1->ExtController = 128;
                bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
                break;
            default:
                lfo3_internal_depth  = 0;
                pLFO3->ExtController = 0; // no external controller
                bLFO3Enabled         = false;
        }
        if (bLFO3Enabled) {
            pLFO3->trigger(pRegion->LFO3Frequency,
                           start_level_mid,
                           lfo3_internal_depth,
                           pRegion->LFO3ControlDepth,
                           false,
                           pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
            pLFO3->update(pLFO3->ExtController ? GetSfzEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
        }*/ // TODO: ^^^
        bLFO3Enabled = false;
    }

    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
                pEG1->enterFadeOutStage();
            }
        }
    }

}} // 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			Voice::Voice() {
35			pEngine = NULL;
36			}
37
38			Voice::~Voice() {
39	iliev	2015
40	iliev	2012	}
41
42	iliev	2015	EngineChannel* Voice::GetSfzEngineChannel() {
43			return static_cast<EngineChannel*>(pEngineChannel);
44			}
45
46	iliev	2012	void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
47			Engine* engine = static_cast<Engine*>(pEngine);
48			this->pEngine = engine;
49			this->pDiskThread = engine->pDiskThread;
50			dmsg(6,("Voice::SetEngine()\n"));
51			}
52
53	iliev	2015	Voice::SampleInfo Voice::GetSampleInfo() {
54			SampleInfo si;
55			si.SampleRate = pSample->GetSampleRate();
56			si.ChannelCount = pSample->GetChannelCount();
57			si.FrameSize = pSample->GetFrameSize();
58			si.BitDepth = (pSample->GetFrameSize() / pSample->GetChannelCount()) * 8;
59			si.TotalFrameCount = pSample->GetTotalFrameCount();
60	iliev	2012
61	iliev	2021	si.HasLoops = pRegion->HasLoop();
62			si.LoopStart = pRegion->GetLoopStart();
63			si.LoopLength = pRegion->GetLoopEnd() - pRegion->GetLoopStart();
64			si.LoopPlayCount = pRegion->GetLoopCount();
65			si.Unpitched = pRegion->pitch_keytrack == 0;
66	iliev	2015	return si;
67			}
68	iliev	2012
69	iliev	2015	Voice::RegionInfo Voice::GetRegionInfo() {
70			RegionInfo ri;
71	iliev	2018	ri.UnityNote = pRegion->pitch_keycenter;
72	persson	2086	ri.FineTune = pRegion->tune + pRegion->transpose * 100;
73	persson	2045	ri.Pan = int(pRegion->pan * 0.63); // convert from -100..100 to -64..63
74	iliev	2018	ri.SampleStartOffset = 0; // TODO:
75	iliev	2012
76	iliev	2018	ri.EG1PreAttack = pRegion->ampeg_start * 10;
77			ri.EG1Attack = pRegion->ampeg_attack;
78			ri.EG1Hold = pRegion->ampeg_hold;
79			ri.EG1Decay1 = pRegion->ampeg_decay;
80			ri.EG1Decay2 = pRegion->ampeg_decay;
81	persson	2055	ri.EG1Sustain = pRegion->ampeg_sustain * 10;
82	iliev	2015	ri.EG1InfiniteSustain = true;
83	iliev	2018	ri.EG1Release = pRegion->ampeg_release;
84	iliev	2012
85	persson	2055	ri.EG2PreAttack = pRegion->fileg_start * 10;
86	iliev	2018	ri.EG2Attack = pRegion->fileg_attack;
87			//ri.EG2Hold = pRegion->fileg_hold; // TODO:
88			ri.EG2Decay1 = pRegion->fileg_decay;
89			ri.EG2Decay2 = pRegion->fileg_decay;
90	persson	2055	ri.EG2Sustain = pRegion->fileg_sustain * 10;
91	iliev	2015	ri.EG2InfiniteSustain = true;
92	iliev	2018	ri.EG2Release = pRegion->fileg_release;
93	iliev	2012
94	iliev	2018	ri.EG3Attack = pRegion->pitcheg_attack;
95	iliev	2015	ri.EG3Depth = 0; // TODO:
96	persson	2175	ri.VCFEnabled = pRegion->cutoff;
97			switch (pRegion->fil_type) {
98			case ::sfz::LPF_1P:
99			ri.VCFType = Filter::vcf_type_1p_lowpass;
100			break;
101			case ::sfz::LPF_2P:
102			ri.VCFType = Filter::vcf_type_2p_lowpass;
103			break;
104			case ::sfz::LPF_4P:
105			ri.VCFType = Filter::vcf_type_4p_lowpass;
106			break;
107			case ::sfz::LPF_6P:
108			ri.VCFType = Filter::vcf_type_6p_lowpass;
109			break;
110			case ::sfz::HPF_1P:
111			ri.VCFType = Filter::vcf_type_1p_highpass;
112			break;
113			case ::sfz::HPF_2P:
114			ri.VCFType = Filter::vcf_type_2p_highpass;
115			break;
116			case ::sfz::HPF_4P:
117			ri.VCFType = Filter::vcf_type_4p_highpass;
118			break;
119			case ::sfz::HPF_6P:
120			ri.VCFType = Filter::vcf_type_6p_highpass;
121			break;
122			case ::sfz::BPF_1P:
123			case ::sfz::BPF_2P:
124			ri.VCFType = Filter::vcf_type_2p_bandpass;
125			break;
126			case ::sfz::BRF_1P:
127			case ::sfz::BRF_2P:
128			ri.VCFType = Filter::vcf_type_2p_bandreject;
129			break;
130			case ::sfz::APF_1P:
131			case ::sfz::PKF_2P:
132			default:
133			ri.VCFEnabled = false;
134			break;
135			}
136	iliev	2012
137	persson	2175	ri.VCFResonance = pRegion->resonance;
138
139	persson	2061	// rt_decay is in dB. Precalculate a suitable value for exp in
140			// GetReleaseTriggerAttenuation: -ln(10) / 20 * rt_decay
141	persson	2072	ri.ReleaseTriggerDecay = -LN_10_DIV_20 * pRegion->rt_decay;
142	iliev	2012
143	iliev	2015	return ri;
144			}
145	iliev	2012
146	iliev	2015	Voice::InstrumentInfo Voice::GetInstrumentInfo() {
147			InstrumentInfo ii;
148			ii.FineTune = 0; // TODO:
149			ii.PitchbendRange = 2; // TODO:
150
151			return ii;
152			}
153
154			double Voice::GetSampleAttenuation() {
155	persson	2072	return exp(LN_10_DIV_20 * pRegion->volume);
156	iliev	2015	}
157
158			double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
159	persson	2082	return pRegion->amp_velcurve[MIDIKeyVelocity];
160	iliev	2015	}
161
162			double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
163	persson	2176	return 127.0 / MIDIKeyVelocity;
164	iliev	2015	}
165
166			void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
167			/*if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
168			if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
169			itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
170			CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
171			}
172			}*/ // TODO: ^^^
173			}
174
175			void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
176	persson	2175	int ccvalue = itEvent->Param.CC.Value;
177	iliev	2015	if (VCFCutoffCtrl.value == ccvalue) return;
178	persson	2175	VCFCutoffCtrl.value = ccvalue;
179	iliev	2015
180	persson	2175	float cutoff = CutoffBase * RTMath::CentsToFreqRatioUnlimited(
181			ccvalue / 127.0f * pRegion->cutoff_oncc[VCFCutoffCtrl.controller]);
182			if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate;
183
184	iliev	2015	VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
185	persson	2175	fFinalCutoff = cutoff;
186	iliev	2015	}
187
188			double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
189	iliev	2012	/*float crossfadeVolume;
190			switch (pRegion->AttenuationController.type) {
191			case ::gig::attenuation_ctrl_t::type_channelaftertouch:
192	iliev	2015	crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[128])];
193	iliev	2012	break;
194			case ::gig::attenuation_ctrl_t::type_velocity:
195	iliev	2015	crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
196	iliev	2012	break;
197			case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
198	iliev	2015	crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
199	iliev	2012	break;
200			case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
201			default:
202			crossfadeVolume = 1.0f;
203			}
204
205	iliev	2015	return crossfadeVolume;*/ // TODO: ^^^
206			return 1.0f;
207			}
208	iliev	2012
209	iliev	2015	double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
210			/*double eg1controllervalue = 0;
211			switch (pRegion->EG1Controller.type) {
212			case ::gig::eg1_ctrl_t::type_none: // no controller defined
213			eg1controllervalue = 0;
214			break;
215			case ::gig::eg1_ctrl_t::type_channelaftertouch:
216			eg1controllervalue = GetSfzEngineChannel()->ControllerTable[128];
217			break;
218			case ::gig::eg1_ctrl_t::type_velocity:
219			eg1controllervalue = MIDIKeyVelocity;
220			break;
221			case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
222			eg1controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
223			break;
224	iliev	2012	}
225	iliev	2015	if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
226	iliev	2012
227	iliev	2015	return eg1controllervalue;*/ // TODO: ^^^
228			return 0;
229			}
230	iliev	2012
231	iliev	2015	Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
232			/*EGInfo eg;
233			// (eg1attack is different from the others)
234			eg.Attack = (pRegion->EG1ControllerAttackInfluence) ?
235			1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
236			1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
237			eg.Decay = (pRegion->EG1ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence) * eg1ControllerValue : 1.0;
238			eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
239	iliev	2012
240	iliev	2015	return eg;*/ // TODO: ^^^
241			EGInfo eg;
242			eg.Attack = 1.0;
243			eg.Decay = 1.0;
244			eg.Release = 1.0;
245			return eg;
246			}
247	iliev	2012
248	persson	2055	void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
249
250			// TODO: controller modulation
251
252			// first check if there is a v2 EG for amplitude
253			for (int i = 0 ; i < pRegion->eg.size() ; i++) {
254			if (pRegion->eg[i].amplitude > 0) {
255			// TODO: actually use the value of the amplitude parameter
256			pEG1 = &EG1;
257			EG1.trigger(pRegion->eg[i], sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE, velocity);
258			return;
259			}
260			}
261
262			// otherwise use the v1 EGADSR
263			pEG1 = &EGADSR1;
264			EGADSR1.trigger(uint(RgnInfo.EG1PreAttack),
265	persson	2176	std::max(0.0, RgnInfo.EG1Attack + pRegion->ampeg_vel2attack * velrelease),
266			std::max(0.0, RgnInfo.EG1Hold + pRegion->ampeg_vel2hold * velrelease),
267			std::max(0.0, RgnInfo.EG1Decay1 + pRegion->ampeg_vel2decay * velrelease),
268			uint(std::min(std::max(0.0, RgnInfo.EG1Sustain + 10 * pRegion->ampeg_vel2sustain * velrelease), 1000.0)),
269			std::max(0.0, RgnInfo.EG1Release + pRegion->ampeg_vel2release * velrelease),
270	persson	2055	sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
271	persson	2176	}
272	persson	2055
273	persson	2176	double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
274	iliev	2015	/*double eg2controllervalue = 0;
275			switch (pRegion->EG2Controller.type) {
276			case ::gig::eg2_ctrl_t::type_none: // no controller defined
277			eg2controllervalue = 0;
278			break;
279			case ::gig::eg2_ctrl_t::type_channelaftertouch:
280			eg2controllervalue = GetSfzEngineChannel()->ControllerTable[128];
281			break;
282			case ::gig::eg2_ctrl_t::type_velocity:
283			eg2controllervalue = MIDIKeyVelocity;
284			break;
285			case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
286			eg2controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
287			break;
288	iliev	2012	}
289	iliev	2015	if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
290	iliev	2012
291	iliev	2015	return eg2controllervalue;*/ // TODO: ^^^
292			return 0;
293			}
294	iliev	2012
295	iliev	2015	Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
296			/*EGInfo eg;
297			eg.Attack = (pRegion->EG2ControllerAttackInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence) * eg2ControllerValue : 1.0;
298			eg.Decay = (pRegion->EG2ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence) * eg2ControllerValue : 1.0;
299			eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
300	iliev	2012
301	iliev	2015	return eg;*/ // TODO: ^^^
302			EGInfo eg;
303			eg.Attack = 1.0;
304			eg.Decay = 1.0;
305			eg.Release = 1.0;
306			return eg;
307			}
308	iliev	2012
309	persson	2175	void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
310
311			// TODO: the sfz filter EG should modulate cents, not hertz,
312			// so we can't use the EG or EGADSR as it is. Disable for now.
313
314			pEG2 = &EGADSR2;
315			EGADSR2.trigger(0,
316			0,
317			false,
318			0,
319			1000,
320			0,
321			sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
322			}
323
324	iliev	2015	void Voice::InitLFO1() {
325			/*uint16_t lfo1_internal_depth;
326			switch (pRegion->LFO1Controller) {
327			case ::gig::lfo1_ctrl_internal:
328			lfo1_internal_depth = pRegion->LFO1InternalDepth;
329			pLFO1->ExtController = 0; // no external controller
330			bLFO1Enabled = (lfo1_internal_depth > 0);
331			break;
332			case ::gig::lfo1_ctrl_modwheel:
333			lfo1_internal_depth = 0;
334			pLFO1->ExtController = 1; // MIDI controller 1
335			bLFO1Enabled = (pRegion->LFO1ControlDepth > 0);
336			break;
337			case ::gig::lfo1_ctrl_breath:
338			lfo1_internal_depth = 0;
339			pLFO1->ExtController = 2; // MIDI controller 2
340			bLFO1Enabled = (pRegion->LFO1ControlDepth > 0);
341			break;
342			case ::gig::lfo1_ctrl_internal_modwheel:
343			lfo1_internal_depth = pRegion->LFO1InternalDepth;
344			pLFO1->ExtController = 1; // MIDI controller 1
345			bLFO1Enabled = (lfo1_internal_depth > 0 \|\| pRegion->LFO1ControlDepth > 0);
346			break;
347			case ::gig::lfo1_ctrl_internal_breath:
348			lfo1_internal_depth = pRegion->LFO1InternalDepth;
349			pLFO1->ExtController = 2; // MIDI controller 2
350			bLFO1Enabled = (lfo1_internal_depth > 0 \|\| pRegion->LFO1ControlDepth > 0);
351			break;
352			default:
353			lfo1_internal_depth = 0;
354			pLFO1->ExtController = 0; // no external controller
355			bLFO1Enabled = false;
356	iliev	2012	}
357	iliev	2015	if (bLFO1Enabled) {
358			pLFO1->trigger(pRegion->LFO1Frequency,
359			start_level_min,
360			lfo1_internal_depth,
361			pRegion->LFO1ControlDepth,
362			pRegion->LFO1FlipPhase,
363			pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
364			pLFO1->update(pLFO1->ExtController ? GetSfzEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
365	iliev	2012	}*/ // TODO: ^^^
366	iliev	2015	bLFO1Enabled = false;
367			}
368	iliev	2012
369	iliev	2015	void Voice::InitLFO2() {
370			/*uint16_t lfo2_internal_depth;
371			switch (pRegion->LFO2Controller) {
372			case ::gig::lfo2_ctrl_internal:
373			lfo2_internal_depth = pRegion->LFO2InternalDepth;
374			pLFO2->ExtController = 0; // no external controller
375			bLFO2Enabled = (lfo2_internal_depth > 0);
376			break;
377			case ::gig::lfo2_ctrl_modwheel:
378			lfo2_internal_depth = 0;
379			pLFO2->ExtController = 1; // MIDI controller 1
380			bLFO2Enabled = (pRegion->LFO2ControlDepth > 0);
381			break;
382			case ::gig::lfo2_ctrl_foot:
383			lfo2_internal_depth = 0;
384			pLFO2->ExtController = 4; // MIDI controller 4
385			bLFO2Enabled = (pRegion->LFO2ControlDepth > 0);
386			break;
387			case ::gig::lfo2_ctrl_internal_modwheel:
388			lfo2_internal_depth = pRegion->LFO2InternalDepth;
389			pLFO2->ExtController = 1; // MIDI controller 1
390			bLFO2Enabled = (lfo2_internal_depth > 0 \|\| pRegion->LFO2ControlDepth > 0);
391			break;
392			case ::gig::lfo2_ctrl_internal_foot:
393			lfo2_internal_depth = pRegion->LFO2InternalDepth;
394			pLFO2->ExtController = 4; // MIDI controller 4
395			bLFO2Enabled = (lfo2_internal_depth > 0 \|\| pRegion->LFO2ControlDepth > 0);
396			break;
397			default:
398			lfo2_internal_depth = 0;
399			pLFO2->ExtController = 0; // no external controller
400			bLFO2Enabled = false;
401	iliev	2012	}
402	iliev	2015	if (bLFO2Enabled) {
403			pLFO2->trigger(pRegion->LFO2Frequency,
404			start_level_max,
405			lfo2_internal_depth,
406			pRegion->LFO2ControlDepth,
407			pRegion->LFO2FlipPhase,
408			pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
409			pLFO2->update(pLFO2->ExtController ? GetSfzEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
410	iliev	2012	}*/ // TODO: ^^^
411	iliev	2015	bLFO2Enabled = false;
412	iliev	2012	}
413
414	iliev	2015	void Voice::InitLFO3() {
415			/*uint16_t lfo3_internal_depth;
416			switch (pRegion->LFO3Controller) {
417			case ::gig::lfo3_ctrl_internal:
418			lfo3_internal_depth = pRegion->LFO3InternalDepth;
419			pLFO3->ExtController = 0; // no external controller
420			bLFO3Enabled = (lfo3_internal_depth > 0);
421	iliev	2012	break;
422	iliev	2015	case ::gig::lfo3_ctrl_modwheel:
423			lfo3_internal_depth = 0;
424			pLFO3->ExtController = 1; // MIDI controller 1
425			bLFO3Enabled = (pRegion->LFO3ControlDepth > 0);
426	iliev	2012	break;
427	iliev	2015	case ::gig::lfo3_ctrl_aftertouch:
428			lfo3_internal_depth = 0;
429			pLFO3->ExtController = 128;
430			bLFO3Enabled = true;
431	iliev	2012	break;
432	iliev	2015	case ::gig::lfo3_ctrl_internal_modwheel:
433			lfo3_internal_depth = pRegion->LFO3InternalDepth;
434			pLFO3->ExtController = 1; // MIDI controller 1
435			bLFO3Enabled = (lfo3_internal_depth > 0 \|\| pRegion->LFO3ControlDepth > 0);
436			break;
437			case ::gig::lfo3_ctrl_internal_aftertouch:
438			lfo3_internal_depth = pRegion->LFO3InternalDepth;
439			pLFO1->ExtController = 128;
440			bLFO3Enabled = (lfo3_internal_depth > 0 \|\| pRegion->LFO3ControlDepth > 0);
441			break;
442			default:
443			lfo3_internal_depth = 0;
444			pLFO3->ExtController = 0; // no external controller
445			bLFO3Enabled = false;
446	iliev	2012	}
447	iliev	2015	if (bLFO3Enabled) {
448			pLFO3->trigger(pRegion->LFO3Frequency,
449			start_level_mid,
450			lfo3_internal_depth,
451			pRegion->LFO3ControlDepth,
452			false,
453			pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
454			pLFO3->update(pLFO3->ExtController ? GetSfzEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
455			}*/ // TODO: ^^^
456			bLFO3Enabled = false;
457	iliev	2012	}
458
459	iliev	2015	float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
460	persson	2175	float cutoff = *pRegion->cutoff;
461			cutoff *= RTMath::CentsToFreqRatioUnlimited(
462			MIDIKeyVelocity / 127.0f * pRegion->fil_veltrack +
463			(MIDIKey - pRegion->fil_keycenter) * pRegion->fil_keytrack);
464			return cutoff;
465	iliev	2012	}
466
467	iliev	2015	float Voice::CalculateFinalCutoff(float cutoffBase) {
468	persson	2175	float cutoff;
469	iliev	2015	if (VCFCutoffCtrl.controller) {
470	persson	2175	int ccvalue = GetSfzEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
471			cutoff = CutoffBase * RTMath::CentsToFreqRatioUnlimited(
472			ccvalue / 127.0f * pRegion->cutoff_oncc[VCFCutoffCtrl.controller]);
473			} else {
474			cutoff = cutoffBase;
475	iliev	2012	}
476	persson	2175	if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate;
477			return cutoff;
478	iliev	2012	}
479
480	iliev	2015	uint8_t Voice::GetVCFCutoffCtrl() {
481	persson	2175	// TODO: the sfz format allows several CC for the same
482			// modulation destination. The Voice interface needs to be
483			// changed to support that.
484			if (pRegion->cutoff_cc) return pRegion->cutoff_cc;
485			else if (pRegion->cutoff_chanaft) return 128;
486	iliev	2015	return 0;
487	iliev	2012	}
488
489	iliev	2015	uint8_t Voice::GetVCFResonanceCtrl() {
490			/*uint8_t ctrl;
491			switch (pRegion->VCFResonanceController) {
492			case ::gig::vcf_res_ctrl_genpurpose3:
493			ctrl = 18;
494			break;
495			case ::gig::vcf_res_ctrl_genpurpose4:
496			ctrl = 19;
497			break;
498			case ::gig::vcf_res_ctrl_genpurpose5:
499			ctrl = 80;
500			break;
501			case ::gig::vcf_res_ctrl_genpurpose6:
502			ctrl = 81;
503			break;
504			case ::gig::vcf_res_ctrl_none:
505			default:
506			ctrl = 0;
507	iliev	2012	}
508
509	iliev	2015	return ctrl;*/ // TODO: ^^^
510			return 0;
511	iliev	2012	}
512
513	persson	2061	float Voice::GetReleaseTriggerAttenuation(float noteLength) {
514			// pow(10, -rt_decay * noteLength / 20):
515			return expf(RgnInfo.ReleaseTriggerDecay * noteLength);
516			}
517
518	persson	2114	void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
519			dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
520	persson	2115	if (itEvent->Type == Event::type_control_change \|\|
521			(Type & Voice::type_controller_triggered) \|\|
522			itEvent->Param.Note.Key != MIDIKey) {
523	persson	2114	dmsg(4,("Voice %x - kill", this));
524			if (pRegion->off_mode == ::sfz::OFF_NORMAL) {
525			// turn off the voice by entering release envelope stage
526			EnterReleaseStage();
527			} else {
528			// kill the voice fast
529			pEG1->enterFadeOutStage();
530			}
531			}
532			}
533
534	iliev	2012	}} // namespace LinuxSampler::sfz