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/*************************************************************************** |
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* * |
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* LinuxSampler - modular, streaming capable sampler * |
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* * |
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* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
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* Copyright (C) 2005 - 2008 Christian Schoenebeck * |
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* Copyright (C) 2009 - 2013 Christian Schoenebeck and Grigor Iliev * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This program is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this program; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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|
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#include "Voice.h" |
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|
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#include "Engine.h" |
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#include "EngineChannel.h" |
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|
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#define LN_10_DIV_20 0.115129254649702 |
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|
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namespace LinuxSampler { namespace sfz { |
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|
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typedef LinuxSampler::VoiceBase<EngineChannel, ::sfz::Region, Sample, DiskThread> SfzVoice; |
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Voice::Voice(): SignalRack(this), SfzVoice(&SignalRack) { |
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pEngine = NULL; |
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bEqSupport = true; |
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} |
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|
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Voice::~Voice() { |
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|
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} |
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|
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EngineChannel* Voice::GetSfzEngineChannel() { |
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return static_cast<EngineChannel*>(pEngineChannel); |
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} |
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|
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void Voice::SetEngine(LinuxSampler::Engine* pEngine) { |
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Engine* engine = static_cast<Engine*>(pEngine); |
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this->pEngine = engine; |
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this->pDiskThread = engine->pDiskThread; |
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dmsg(6,("Voice::SetEngine()\n")); |
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} |
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|
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Voice::SampleInfo Voice::GetSampleInfo() { |
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SampleInfo si; |
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si.SampleRate = pSample->GetSampleRate(); |
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si.ChannelCount = pSample->GetChannelCount(); |
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si.FrameSize = pSample->GetFrameSize(); |
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si.BitDepth = (pSample->GetFrameSize() / pSample->GetChannelCount()) * 8; |
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si.TotalFrameCount = pSample->GetTotalFrameCount(); |
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|
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si.HasLoops = pRegion->HasLoop(); |
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si.LoopStart = pRegion->GetLoopStart(); |
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si.LoopLength = pRegion->GetLoopEnd() - pRegion->GetLoopStart(); |
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si.LoopPlayCount = pRegion->GetLoopCount(); |
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si.Unpitched = pRegion->pitch_keytrack == 0; |
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return si; |
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} |
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|
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Voice::RegionInfo Voice::GetRegionInfo() { |
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RegionInfo ri; |
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ri.UnityNote = pRegion->pitch_keycenter; |
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ri.FineTune = pRegion->tune + pRegion->transpose * 100; |
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ri.Pan = int(pRegion->pan * 0.63); // convert from -100..100 to -64..63 |
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ri.SampleStartOffset = pRegion->offset ? *(pRegion->offset) : 0; |
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|
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ri.VCFEnabled = pRegion->cutoff; |
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switch (pRegion->fil_type) { |
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case ::sfz::LPF_1P: |
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ri.VCFType = Filter::vcf_type_1p_lowpass; |
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break; |
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case ::sfz::LPF_2P: |
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ri.VCFType = Filter::vcf_type_2p_lowpass; |
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break; |
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case ::sfz::LPF_4P: |
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ri.VCFType = Filter::vcf_type_4p_lowpass; |
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break; |
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case ::sfz::LPF_6P: |
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ri.VCFType = Filter::vcf_type_6p_lowpass; |
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break; |
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case ::sfz::HPF_1P: |
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ri.VCFType = Filter::vcf_type_1p_highpass; |
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break; |
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case ::sfz::HPF_2P: |
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ri.VCFType = Filter::vcf_type_2p_highpass; |
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break; |
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case ::sfz::HPF_4P: |
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ri.VCFType = Filter::vcf_type_4p_highpass; |
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break; |
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case ::sfz::HPF_6P: |
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ri.VCFType = Filter::vcf_type_6p_highpass; |
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break; |
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case ::sfz::BPF_1P: |
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case ::sfz::BPF_2P: |
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ri.VCFType = Filter::vcf_type_2p_bandpass; |
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break; |
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case ::sfz::BRF_1P: |
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case ::sfz::BRF_2P: |
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ri.VCFType = Filter::vcf_type_2p_bandreject; |
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break; |
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case ::sfz::APF_1P: |
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case ::sfz::PKF_2P: |
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default: |
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ri.VCFEnabled = false; |
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break; |
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} |
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|
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ri.VCFResonance = pRegion->resonance; |
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|
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// rt_decay is in dB. Precalculate a suitable value for exp in |
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// GetReleaseTriggerAttenuation: -ln(10) / 20 * rt_decay |
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ri.ReleaseTriggerDecay = -LN_10_DIV_20 * pRegion->rt_decay; |
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|
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return ri; |
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} |
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|
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Voice::InstrumentInfo Voice::GetInstrumentInfo() { |
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InstrumentInfo ii; |
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ii.FineTune = 0; // TODO: |
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ii.PitchbendRange = 2; // TODO: |
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|
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return ii; |
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} |
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|
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double Voice::GetSampleAttenuation() { |
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return exp(LN_10_DIV_20 * pRegion->volume) * pRegion->amplitude / 100; |
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} |
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|
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double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) { |
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float offset = -pRegion->amp_veltrack; |
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if (offset <= 0) offset += 100; |
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return (offset + pRegion->amp_veltrack * pRegion->amp_velcurve[MIDIKeyVelocity]) / 100; |
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} |
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|
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double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) { |
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return 127.0 / MIDIKeyVelocity; |
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} |
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|
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void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) { |
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/*if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event |
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if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange && |
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itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) { |
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CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]); |
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} |
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}*/ // TODO: ^^^ |
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} |
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|
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void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) { |
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//TODO: ... |
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} |
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|
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void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) { |
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//TODO: ... |
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} |
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|
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double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) { |
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/*float crossfadeVolume; |
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switch (pRegion->AttenuationController.type) { |
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case ::gig::attenuation_ctrl_t::type_channelaftertouch: |
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crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[128])]; |
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break; |
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case ::gig::attenuation_ctrl_t::type_velocity: |
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crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)]; |
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break; |
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case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate |
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crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])]; |
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break; |
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case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined |
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default: |
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crossfadeVolume = 1.0f; |
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} |
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|
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return crossfadeVolume;*/ // TODO: ^^^ |
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return 1.0f; |
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} |
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|
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double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) { |
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/*double eg1controllervalue = 0; |
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switch (pRegion->EG1Controller.type) { |
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case ::gig::eg1_ctrl_t::type_none: // no controller defined |
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eg1controllervalue = 0; |
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break; |
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case ::gig::eg1_ctrl_t::type_channelaftertouch: |
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eg1controllervalue = GetSfzEngineChannel()->ControllerTable[128]; |
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break; |
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case ::gig::eg1_ctrl_t::type_velocity: |
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eg1controllervalue = MIDIKeyVelocity; |
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break; |
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case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller |
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eg1controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number]; |
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break; |
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} |
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if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue; |
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|
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return eg1controllervalue;*/ // TODO: ^^^ |
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return 0; |
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} |
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|
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Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) { |
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/*EGInfo eg; |
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// (eg1attack is different from the others) |
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eg.Attack = (pRegion->EG1ControllerAttackInfluence) ? |
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1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ? |
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1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0; |
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eg.Decay = (pRegion->EG1ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence) * eg1ControllerValue : 1.0; |
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eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0; |
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|
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return eg;*/ // TODO: ^^^ |
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EGInfo eg; |
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eg.Attack = 1.0; |
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eg.Decay = 1.0; |
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eg.Release = 1.0; |
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return eg; |
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} |
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|
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double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) { |
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/*double eg2controllervalue = 0; |
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switch (pRegion->EG2Controller.type) { |
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case ::gig::eg2_ctrl_t::type_none: // no controller defined |
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eg2controllervalue = 0; |
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break; |
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case ::gig::eg2_ctrl_t::type_channelaftertouch: |
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eg2controllervalue = GetSfzEngineChannel()->ControllerTable[128]; |
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break; |
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case ::gig::eg2_ctrl_t::type_velocity: |
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eg2controllervalue = MIDIKeyVelocity; |
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break; |
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case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller |
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eg2controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number]; |
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break; |
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} |
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if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue; |
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|
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return eg2controllervalue;*/ // TODO: ^^^ |
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return 0; |
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} |
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|
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Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) { |
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/*EGInfo eg; |
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eg.Attack = (pRegion->EG2ControllerAttackInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence) * eg2ControllerValue : 1.0; |
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eg.Decay = (pRegion->EG2ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence) * eg2ControllerValue : 1.0; |
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eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0; |
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|
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return eg;*/ // TODO: ^^^ |
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EGInfo eg; |
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eg.Attack = 1.0; |
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eg.Decay = 1.0; |
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eg.Release = 1.0; |
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return eg; |
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} |
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|
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float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) { |
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float cutoff = *pRegion->cutoff; |
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cutoff *= RTMath::CentsToFreqRatioUnlimited( |
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MIDIKeyVelocity / 127.0f * pRegion->fil_veltrack + |
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(MIDIKey - pRegion->fil_keycenter) * pRegion->fil_keytrack); |
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return cutoff; |
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} |
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|
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float Voice::CalculateFinalCutoff(float cutoffBase) { |
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float cutoff = cutoffBase; |
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if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate; |
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return cutoff; |
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} |
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|
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float Voice::GetReleaseTriggerAttenuation(float noteLength) { |
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// pow(10, -rt_decay * noteLength / 20): |
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return expf(RgnInfo.ReleaseTriggerDecay * noteLength); |
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} |
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|
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void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) { |
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dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type)); |
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if (itEvent->Type == Event::type_control_change || |
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(Type & Voice::type_controller_triggered) || |
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itEvent->Param.Note.Key != MIDIKey) { |
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dmsg(4,("Voice %x - kill", this)); |
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if (pRegion->off_mode == ::sfz::OFF_NORMAL) { |
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// turn off the voice by entering release envelope stage |
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EnterReleaseStage(); |
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} else { |
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// kill the voice fast |
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SignalRack.EnterFadeOutStage(); |
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} |
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} |
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} |
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|
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void Voice::SetSampleStartOffset() { |
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if (DiskVoice && RgnInfo.SampleStartOffset > pSample->MaxOffset) { |
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// The offset is applied to the RAM buffer |
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finalSynthesisParameters.dPos = 0; |
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Pos = 0; |
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} else { |
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finalSynthesisParameters.dPos = RgnInfo.SampleStartOffset; // offset where we should start playback of sample |
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Pos = RgnInfo.SampleStartOffset; |
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} |
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} |
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|
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void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) { |
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SignalRack.CalculateFadeOutCoeff(FadeOutTime, SampleRate); |
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} |
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|
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int Voice::CalculatePan(uint8_t pan) { |
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// the value isn't limited to [0, 127] here, as this is done |
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// later in SignalUnit.CalculatePan |
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return pan + RgnInfo.Pan; |
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} |
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|
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}} // namespace LinuxSampler::sfz |