/*************************************************************************** * * * LinuxSampler - modular, streaming capable sampler * * * * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * * Copyright (C) 2005 - 2008 Christian Schoenebeck * * Copyright (C) 2009 - 2012 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 SfzVoice; Voice::Voice(): SignalRack(this), SfzVoice(&SignalRack) { pEngine = NULL; bEqSupport = true; } Voice::~Voice() { } EngineChannel* Voice::GetSfzEngineChannel() { return static_cast(pEngineChannel); } void Voice::SetEngine(LinuxSampler::Engine* pEngine) { Engine* engine = static_cast(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); } 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::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: ^^^ } 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::Iterator& itEvent) { dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type)); if (itEvent->Type == Event::type_control_change || (Type & Voice::type_controller_triggered) || itEvent->Param.Note.Key != MIDIKey) { dmsg(4,("Voice %x - kill", this)); if (pRegion->off_mode == ::sfz::OFF_NORMAL) { // turn off the voice by entering release envelope stage EnterReleaseStage(); } else { // kill the voice fast SignalRack.EnterFadeOutStage(); } } } void Voice::SetSampleStartOffset() { if (DiskVoice && RgnInfo.SampleStartOffset > pSample->MaxOffset) { // The offset is applied to the RAM buffer finalSynthesisParameters.dPos = 0; Pos = 0; } else { finalSynthesisParameters.dPos = RgnInfo.SampleStartOffset; // offset where we should start playback of sample Pos = RgnInfo.SampleStartOffset; } } 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