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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 Christian Schoenebeck * |
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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 "EGADSR.h" |
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#include "Manipulator.h" |
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#include "../../common/Features.h" |
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#include "Synthesizer.h" |
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|
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#include "Voice.h" |
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|
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namespace LinuxSampler { namespace gig { |
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|
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const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff()); |
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|
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const int Voice::FILTER_UPDATE_MASK(CalculateFilterUpdateMask()); |
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|
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float Voice::CalculateFilterCutoffCoeff() { |
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return log(CONFIG_FILTER_CUTOFF_MIN / CONFIG_FILTER_CUTOFF_MAX); |
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} |
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|
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int Voice::CalculateFilterUpdateMask() { |
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if (CONFIG_FILTER_UPDATE_STEPS <= 0) return 0; |
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int power_of_two; |
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for (power_of_two = 0; 1<<power_of_two < CONFIG_FILTER_UPDATE_STEPS; power_of_two++); |
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return (1 << power_of_two) - 1; |
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} |
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|
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Voice::Voice() { |
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pEngine = NULL; |
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pDiskThread = NULL; |
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PlaybackState = playback_state_end; |
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pEG1 = NULL; |
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pEG2 = NULL; |
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pEG3 = NULL; |
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pVCAManipulator = NULL; |
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pVCFCManipulator = NULL; |
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pVCOManipulator = NULL; |
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pLFO1 = NULL; |
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pLFO2 = NULL; |
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pLFO3 = NULL; |
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KeyGroup = 0; |
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SynthesisMode = 0; // set all mode bits to 0 first |
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// select synthesis implementation (currently either pure C++ or MMX+SSE(1)) |
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#if ARCH_X86 |
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SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE()); |
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#else |
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SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false); |
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#endif |
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SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, true); |
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|
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FilterLeft.Reset(); |
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FilterRight.Reset(); |
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} |
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|
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Voice::~Voice() { |
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if (pEG1) delete pEG1; |
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if (pEG2) delete pEG2; |
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if (pEG3) delete pEG3; |
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if (pLFO1) delete pLFO1; |
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if (pLFO2) delete pLFO2; |
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if (pLFO3) delete pLFO3; |
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if (pVCAManipulator) delete pVCAManipulator; |
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if (pVCFCManipulator) delete pVCFCManipulator; |
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if (pVCOManipulator) delete pVCOManipulator; |
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} |
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|
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void Voice::SetEngine(Engine* pEngine) { |
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this->pEngine = pEngine; |
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|
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// delete old objects |
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if (pEG1) delete pEG1; |
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if (pEG2) delete pEG2; |
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if (pEG3) delete pEG3; |
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if (pVCAManipulator) delete pVCAManipulator; |
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if (pVCFCManipulator) delete pVCFCManipulator; |
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if (pVCOManipulator) delete pVCOManipulator; |
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if (pLFO1) delete pLFO1; |
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if (pLFO2) delete pLFO2; |
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if (pLFO3) delete pLFO3; |
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|
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// create new ones |
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pEG1 = new EGADSR(pEngine, Event::destination_vca); |
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pEG2 = new EGADSR(pEngine, Event::destination_vcfc); |
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pEG3 = new EGDecay(pEngine, Event::destination_vco); |
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pVCAManipulator = new VCAManipulator(pEngine); |
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pVCFCManipulator = new VCFCManipulator(pEngine); |
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pVCOManipulator = new VCOManipulator(pEngine); |
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pLFO1 = new LFO<gig::VCAManipulator>(0.0f, 1.0f, LFO<VCAManipulator>::propagation_top_down, pVCAManipulator, pEngine->pEventPool); |
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pLFO2 = new LFO<gig::VCFCManipulator>(0.0f, 1.0f, LFO<VCFCManipulator>::propagation_top_down, pVCFCManipulator, pEngine->pEventPool); |
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pLFO3 = new LFO<gig::VCOManipulator>(-1200.0f, 1200.0f, LFO<VCOManipulator>::propagation_middle_balanced, pVCOManipulator, pEngine->pEventPool); // +-1 octave (+-1200 cents) max. |
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|
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this->pDiskThread = pEngine->pDiskThread; |
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dmsg(6,("Voice::SetEngine()\n")); |
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} |
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|
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/** |
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* Initializes and triggers the voice, a disk stream will be launched if |
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* needed. |
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* |
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* @param pEngineChannel - engine channel on which this voice was ordered |
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* @param itNoteOnEvent - event that caused triggering of this voice |
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* @param PitchBend - MIDI detune factor (-8192 ... +8191) |
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* @param pInstrument - points to the loaded instrument which provides sample wave(s) and articulation data |
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* @param iLayer - layer number this voice refers to (only if this is a layered sound of course) |
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* @param ReleaseTriggerVoice - if this new voice is a release trigger voice (optional, default = false) |
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* @param VoiceStealingAllowed - wether the voice is allowed to steal voices for further subvoices |
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* @returns 0 on success, a value < 0 if the voice wasn't triggered |
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* (either due to an error or e.g. because no region is |
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* defined for the given key) |
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*/ |
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int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::Instrument* pInstrument, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealingAllowed) { |
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this->pEngineChannel = pEngineChannel; |
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if (!pInstrument) { |
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dmsg(1,("voice::trigger: !pInstrument\n")); |
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exit(EXIT_FAILURE); |
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} |
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#if CONFIG_DEVMODE |
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if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging |
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dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n")); |
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} |
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#endif // CONFIG_DEVMODE |
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|
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Type = type_normal; |
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MIDIKey = itNoteOnEvent->Param.Note.Key; |
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pRegion = pInstrument->GetRegion(MIDIKey); |
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PlaybackState = playback_state_init; // mark voice as triggered, but no audio rendered yet |
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Delay = itNoteOnEvent->FragmentPos(); |
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itTriggerEvent = itNoteOnEvent; |
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itKillEvent = Pool<Event>::Iterator(); |
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|
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if (!pRegion) { |
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dmsg(4, ("gig::Voice: No Region defined for MIDI key %d\n", MIDIKey)); |
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return -1; |
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} |
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|
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// only mark the first voice of a layered voice (group) to be in a |
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// key group, so the layered voices won't kill each other |
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KeyGroup = (iLayer == 0 && !ReleaseTriggerVoice) ? pRegion->KeyGroup : 0; |
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|
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// get current dimension values to select the right dimension region |
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//FIXME: controller values for selecting the dimension region here are currently not sample accurate |
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uint DimValues[8] = { 0 }; |
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for (int i = pRegion->Dimensions - 1; i >= 0; i--) { |
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switch (pRegion->pDimensionDefinitions[i].dimension) { |
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case ::gig::dimension_samplechannel: |
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DimValues[i] = 0; //TODO: we currently ignore this dimension |
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break; |
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case ::gig::dimension_layer: |
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DimValues[i] = iLayer; |
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break; |
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case ::gig::dimension_velocity: |
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DimValues[i] = itNoteOnEvent->Param.Note.Velocity; |
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break; |
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case ::gig::dimension_channelaftertouch: |
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DimValues[i] = 0; //TODO: we currently ignore this dimension |
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break; |
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case ::gig::dimension_releasetrigger: |
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Type = (ReleaseTriggerVoice) ? type_release_trigger : (!iLayer) ? type_release_trigger_required : type_normal; |
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DimValues[i] = (uint) ReleaseTriggerVoice; |
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break; |
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case ::gig::dimension_keyboard: |
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DimValues[i] = (uint) pEngineChannel->CurrentKeyDimension; |
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break; |
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case ::gig::dimension_roundrobin: |
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DimValues[i] = (uint) pEngineChannel->pMIDIKeyInfo[MIDIKey].RoundRobinIndex; // incremented for each note on |
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break; |
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case ::gig::dimension_random: |
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pEngine->RandomSeed = pEngine->RandomSeed * 1103515245 + 12345; // classic pseudo random number generator |
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DimValues[i] = (uint) pEngine->RandomSeed >> (32 - pRegion->pDimensionDefinitions[i].bits); // highest bits are most random |
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break; |
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case ::gig::dimension_modwheel: |
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DimValues[i] = pEngineChannel->ControllerTable[1]; |
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break; |
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case ::gig::dimension_breath: |
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DimValues[i] = pEngineChannel->ControllerTable[2]; |
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break; |
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case ::gig::dimension_foot: |
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DimValues[i] = pEngineChannel->ControllerTable[4]; |
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break; |
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case ::gig::dimension_portamentotime: |
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DimValues[i] = pEngineChannel->ControllerTable[5]; |
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break; |
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case ::gig::dimension_effect1: |
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DimValues[i] = pEngineChannel->ControllerTable[12]; |
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break; |
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case ::gig::dimension_effect2: |
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DimValues[i] = pEngineChannel->ControllerTable[13]; |
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break; |
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case ::gig::dimension_genpurpose1: |
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DimValues[i] = pEngineChannel->ControllerTable[16]; |
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break; |
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case ::gig::dimension_genpurpose2: |
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DimValues[i] = pEngineChannel->ControllerTable[17]; |
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break; |
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case ::gig::dimension_genpurpose3: |
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DimValues[i] = pEngineChannel->ControllerTable[18]; |
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break; |
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case ::gig::dimension_genpurpose4: |
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DimValues[i] = pEngineChannel->ControllerTable[19]; |
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break; |
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case ::gig::dimension_sustainpedal: |
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DimValues[i] = pEngineChannel->ControllerTable[64]; |
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break; |
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case ::gig::dimension_portamento: |
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DimValues[i] = pEngineChannel->ControllerTable[65]; |
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break; |
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case ::gig::dimension_sostenutopedal: |
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DimValues[i] = pEngineChannel->ControllerTable[66]; |
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break; |
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case ::gig::dimension_softpedal: |
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DimValues[i] = pEngineChannel->ControllerTable[67]; |
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break; |
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case ::gig::dimension_genpurpose5: |
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DimValues[i] = pEngineChannel->ControllerTable[80]; |
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break; |
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case ::gig::dimension_genpurpose6: |
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DimValues[i] = pEngineChannel->ControllerTable[81]; |
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break; |
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case ::gig::dimension_genpurpose7: |
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DimValues[i] = pEngineChannel->ControllerTable[82]; |
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break; |
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case ::gig::dimension_genpurpose8: |
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DimValues[i] = pEngineChannel->ControllerTable[83]; |
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break; |
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case ::gig::dimension_effect1depth: |
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DimValues[i] = pEngineChannel->ControllerTable[91]; |
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break; |
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case ::gig::dimension_effect2depth: |
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DimValues[i] = pEngineChannel->ControllerTable[92]; |
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break; |
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case ::gig::dimension_effect3depth: |
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DimValues[i] = pEngineChannel->ControllerTable[93]; |
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break; |
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case ::gig::dimension_effect4depth: |
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DimValues[i] = pEngineChannel->ControllerTable[94]; |
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break; |
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case ::gig::dimension_effect5depth: |
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DimValues[i] = pEngineChannel->ControllerTable[95]; |
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break; |
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case ::gig::dimension_none: |
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std::cerr << "gig::Voice::Trigger() Error: dimension=none\n" << std::flush; |
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break; |
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default: |
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std::cerr << "gig::Voice::Trigger() Error: Unknown dimension\n" << std::flush; |
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} |
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} |
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pDimRgn = pRegion->GetDimensionRegionByValue(DimValues); |
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|
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pSample = pDimRgn->pSample; // sample won't change until the voice is finished |
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if (!pSample || !pSample->SamplesTotal) return -1; // no need to continue if sample is silent |
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|
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// select channel mode (mono or stereo) |
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SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2); |
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|
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// get starting crossfade volume level |
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switch (pDimRgn->AttenuationController.type) { |
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case ::gig::attenuation_ctrl_t::type_channelaftertouch: |
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CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet |
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break; |
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case ::gig::attenuation_ctrl_t::type_velocity: |
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CrossfadeVolume = CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity); |
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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 = CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->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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PanLeft = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) / 63.0f; |
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PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f; |
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|
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Pos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points) |
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|
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// Check if the sample needs disk streaming or is too short for that |
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long cachedsamples = pSample->GetCache().Size / pSample->FrameSize; |
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DiskVoice = cachedsamples < pSample->SamplesTotal; |
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|
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if (DiskVoice) { // voice to be streamed from disk |
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MaxRAMPos = cachedsamples - (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) / pSample->Channels; //TODO: this calculation is too pessimistic and may better be moved to Render() method, so it calculates MaxRAMPos dependent to the current demand of sample points to be rendered (e.g. in case of JACK) |
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|
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// check if there's a loop defined which completely fits into the cached (RAM) part of the sample |
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if (pSample->Loops && pSample->LoopEnd <= MaxRAMPos) { |
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RAMLoop = true; |
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LoopCyclesLeft = pSample->LoopPlayCount; |
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} |
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else RAMLoop = false; |
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|
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if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) { |
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dmsg(1,("Disk stream order failed!\n")); |
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KillImmediately(); |
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return -1; |
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} |
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dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->SamplesTotal, MaxRAMPos, (RAMLoop) ? "yes" : "no")); |
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} |
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else { // RAM only voice |
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MaxRAMPos = cachedsamples; |
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if (pSample->Loops) { |
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RAMLoop = true; |
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LoopCyclesLeft = pSample->LoopPlayCount; |
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} |
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else RAMLoop = false; |
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dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no")); |
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} |
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|
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|
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// calculate initial pitch value |
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{ |
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double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12]; |
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if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100; |
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this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->pAudioOutputDevice->SampleRate())); |
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this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents |
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} |
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|
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const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity); |
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|
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Volume = velocityAttenuation / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0) |
| 339 |
|
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Volume *= pDimRgn->SampleAttenuation; |
| 341 |
|
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// the length of the decay and release curves are dependent on the velocity |
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const double velrelease = 1 / pDimRgn->GetVelocityRelease(itNoteOnEvent->Param.Note.Velocity); |
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|
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// setup EG 1 (VCA EG) |
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{ |
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// get current value of EG1 controller |
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double eg1controllervalue; |
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switch (pDimRgn->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 = 0; // TODO: aftertouch not yet supported |
| 355 |
break; |
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case ::gig::eg1_ctrl_t::type_velocity: |
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eg1controllervalue = itNoteOnEvent->Param.Note.Velocity; |
| 358 |
break; |
| 359 |
case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller |
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eg1controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG1Controller.controller_number]; |
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break; |
| 362 |
} |
| 363 |
if (pDimRgn->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue; |
| 364 |
|
| 365 |
// calculate influence of EG1 controller on EG1's parameters (TODO: needs to be fine tuned) |
| 366 |
double eg1attack = (pDimRgn->EG1ControllerAttackInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 0.0; |
| 367 |
double eg1decay = (pDimRgn->EG1ControllerDecayInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence) * eg1controllervalue : 0.0; |
| 368 |
double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 0.0; |
| 369 |
|
| 370 |
pEG1->Trigger(pDimRgn->EG1PreAttack, |
| 371 |
pDimRgn->EG1Attack + eg1attack, |
| 372 |
pDimRgn->EG1Hold, |
| 373 |
pSample->LoopStart, |
| 374 |
(pDimRgn->EG1Decay1 + eg1decay) * velrelease, |
| 375 |
(pDimRgn->EG1Decay2 + eg1decay) * velrelease, |
| 376 |
pDimRgn->EG1InfiniteSustain, |
| 377 |
pDimRgn->EG1Sustain, |
| 378 |
(pDimRgn->EG1Release + eg1release) * velrelease, |
| 379 |
// the SSE synthesis implementation requires |
| 380 |
// the vca start to be 16 byte aligned |
| 381 |
SYNTHESIS_MODE_GET_IMPLEMENTATION(SynthesisMode) ? |
| 382 |
Delay & 0xfffffffc : Delay, |
| 383 |
velocityAttenuation); |
| 384 |
} |
| 385 |
|
| 386 |
|
| 387 |
// setup EG 2 (VCF Cutoff EG) |
| 388 |
{ |
| 389 |
// get current value of EG2 controller |
| 390 |
double eg2controllervalue; |
| 391 |
switch (pDimRgn->EG2Controller.type) { |
| 392 |
case ::gig::eg2_ctrl_t::type_none: // no controller defined |
| 393 |
eg2controllervalue = 0; |
| 394 |
break; |
| 395 |
case ::gig::eg2_ctrl_t::type_channelaftertouch: |
| 396 |
eg2controllervalue = 0; // TODO: aftertouch not yet supported |
| 397 |
break; |
| 398 |
case ::gig::eg2_ctrl_t::type_velocity: |
| 399 |
eg2controllervalue = itNoteOnEvent->Param.Note.Velocity; |
| 400 |
break; |
| 401 |
case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller |
| 402 |
eg2controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG2Controller.controller_number]; |
| 403 |
break; |
| 404 |
} |
| 405 |
if (pDimRgn->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue; |
| 406 |
|
| 407 |
// calculate influence of EG2 controller on EG2's parameters (TODO: needs to be fine tuned) |
| 408 |
double eg2attack = (pDimRgn->EG2ControllerAttackInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence) * eg2controllervalue : 0.0; |
| 409 |
double eg2decay = (pDimRgn->EG2ControllerDecayInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence) * eg2controllervalue : 0.0; |
| 410 |
double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 0.0; |
| 411 |
|
| 412 |
pEG2->Trigger(pDimRgn->EG2PreAttack, |
| 413 |
pDimRgn->EG2Attack + eg2attack, |
| 414 |
false, |
| 415 |
pSample->LoopStart, |
| 416 |
(pDimRgn->EG2Decay1 + eg2decay) * velrelease, |
| 417 |
(pDimRgn->EG2Decay2 + eg2decay) * velrelease, |
| 418 |
pDimRgn->EG2InfiniteSustain, |
| 419 |
pDimRgn->EG2Sustain, |
| 420 |
(pDimRgn->EG2Release + eg2release) * velrelease, |
| 421 |
Delay, |
| 422 |
velocityAttenuation); |
| 423 |
} |
| 424 |
|
| 425 |
|
| 426 |
// setup EG 3 (VCO EG) |
| 427 |
{ |
| 428 |
double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth); |
| 429 |
pEG3->Trigger(eg3depth, pDimRgn->EG3Attack, Delay); |
| 430 |
} |
| 431 |
|
| 432 |
|
| 433 |
// setup LFO 1 (VCA LFO) |
| 434 |
{ |
| 435 |
uint16_t lfo1_internal_depth; |
| 436 |
switch (pDimRgn->LFO1Controller) { |
| 437 |
case ::gig::lfo1_ctrl_internal: |
| 438 |
lfo1_internal_depth = pDimRgn->LFO1InternalDepth; |
| 439 |
pLFO1->ExtController = 0; // no external controller |
| 440 |
break; |
| 441 |
case ::gig::lfo1_ctrl_modwheel: |
| 442 |
lfo1_internal_depth = 0; |
| 443 |
pLFO1->ExtController = 1; // MIDI controller 1 |
| 444 |
break; |
| 445 |
case ::gig::lfo1_ctrl_breath: |
| 446 |
lfo1_internal_depth = 0; |
| 447 |
pLFO1->ExtController = 2; // MIDI controller 2 |
| 448 |
break; |
| 449 |
case ::gig::lfo1_ctrl_internal_modwheel: |
| 450 |
lfo1_internal_depth = pDimRgn->LFO1InternalDepth; |
| 451 |
pLFO1->ExtController = 1; // MIDI controller 1 |
| 452 |
break; |
| 453 |
case ::gig::lfo1_ctrl_internal_breath: |
| 454 |
lfo1_internal_depth = pDimRgn->LFO1InternalDepth; |
| 455 |
pLFO1->ExtController = 2; // MIDI controller 2 |
| 456 |
break; |
| 457 |
default: |
| 458 |
lfo1_internal_depth = 0; |
| 459 |
pLFO1->ExtController = 0; // no external controller |
| 460 |
} |
| 461 |
pLFO1->Trigger(pDimRgn->LFO1Frequency, |
| 462 |
lfo1_internal_depth, |
| 463 |
pDimRgn->LFO1ControlDepth, |
| 464 |
pEngineChannel->ControllerTable[pLFO1->ExtController], |
| 465 |
pDimRgn->LFO1FlipPhase, |
| 466 |
pEngine->SampleRate, |
| 467 |
Delay); |
| 468 |
} |
| 469 |
|
| 470 |
|
| 471 |
// setup LFO 2 (VCF Cutoff LFO) |
| 472 |
{ |
| 473 |
uint16_t lfo2_internal_depth; |
| 474 |
switch (pDimRgn->LFO2Controller) { |
| 475 |
case ::gig::lfo2_ctrl_internal: |
| 476 |
lfo2_internal_depth = pDimRgn->LFO2InternalDepth; |
| 477 |
pLFO2->ExtController = 0; // no external controller |
| 478 |
break; |
| 479 |
case ::gig::lfo2_ctrl_modwheel: |
| 480 |
lfo2_internal_depth = 0; |
| 481 |
pLFO2->ExtController = 1; // MIDI controller 1 |
| 482 |
break; |
| 483 |
case ::gig::lfo2_ctrl_foot: |
| 484 |
lfo2_internal_depth = 0; |
| 485 |
pLFO2->ExtController = 4; // MIDI controller 4 |
| 486 |
break; |
| 487 |
case ::gig::lfo2_ctrl_internal_modwheel: |
| 488 |
lfo2_internal_depth = pDimRgn->LFO2InternalDepth; |
| 489 |
pLFO2->ExtController = 1; // MIDI controller 1 |
| 490 |
break; |
| 491 |
case ::gig::lfo2_ctrl_internal_foot: |
| 492 |
lfo2_internal_depth = pDimRgn->LFO2InternalDepth; |
| 493 |
pLFO2->ExtController = 4; // MIDI controller 4 |
| 494 |
break; |
| 495 |
default: |
| 496 |
lfo2_internal_depth = 0; |
| 497 |
pLFO2->ExtController = 0; // no external controller |
| 498 |
} |
| 499 |
pLFO2->Trigger(pDimRgn->LFO2Frequency, |
| 500 |
lfo2_internal_depth, |
| 501 |
pDimRgn->LFO2ControlDepth, |
| 502 |
pEngineChannel->ControllerTable[pLFO2->ExtController], |
| 503 |
pDimRgn->LFO2FlipPhase, |
| 504 |
pEngine->SampleRate, |
| 505 |
Delay); |
| 506 |
} |
| 507 |
|
| 508 |
|
| 509 |
// setup LFO 3 (VCO LFO) |
| 510 |
{ |
| 511 |
uint16_t lfo3_internal_depth; |
| 512 |
switch (pDimRgn->LFO3Controller) { |
| 513 |
case ::gig::lfo3_ctrl_internal: |
| 514 |
lfo3_internal_depth = pDimRgn->LFO3InternalDepth; |
| 515 |
pLFO3->ExtController = 0; // no external controller |
| 516 |
break; |
| 517 |
case ::gig::lfo3_ctrl_modwheel: |
| 518 |
lfo3_internal_depth = 0; |
| 519 |
pLFO3->ExtController = 1; // MIDI controller 1 |
| 520 |
break; |
| 521 |
case ::gig::lfo3_ctrl_aftertouch: |
| 522 |
lfo3_internal_depth = 0; |
| 523 |
pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet |
| 524 |
break; |
| 525 |
case ::gig::lfo3_ctrl_internal_modwheel: |
| 526 |
lfo3_internal_depth = pDimRgn->LFO3InternalDepth; |
| 527 |
pLFO3->ExtController = 1; // MIDI controller 1 |
| 528 |
break; |
| 529 |
case ::gig::lfo3_ctrl_internal_aftertouch: |
| 530 |
lfo3_internal_depth = pDimRgn->LFO3InternalDepth; |
| 531 |
pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet |
| 532 |
break; |
| 533 |
default: |
| 534 |
lfo3_internal_depth = 0; |
| 535 |
pLFO3->ExtController = 0; // no external controller |
| 536 |
} |
| 537 |
pLFO3->Trigger(pDimRgn->LFO3Frequency, |
| 538 |
lfo3_internal_depth, |
| 539 |
pDimRgn->LFO3ControlDepth, |
| 540 |
pEngineChannel->ControllerTable[pLFO3->ExtController], |
| 541 |
false, |
| 542 |
pEngine->SampleRate, |
| 543 |
Delay); |
| 544 |
} |
| 545 |
|
| 546 |
|
| 547 |
#if CONFIG_FORCE_FILTER |
| 548 |
const bool bUseFilter = true; |
| 549 |
#else // use filter only if instrument file told so |
| 550 |
const bool bUseFilter = pDimRgn->VCFEnabled; |
| 551 |
#endif // CONFIG_FORCE_FILTER |
| 552 |
SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter); |
| 553 |
if (bUseFilter) { |
| 554 |
#ifdef CONFIG_OVERRIDE_CUTOFF_CTRL |
| 555 |
VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL; |
| 556 |
#else // use the one defined in the instrument file |
| 557 |
switch (pDimRgn->VCFCutoffController) { |
| 558 |
case ::gig::vcf_cutoff_ctrl_modwheel: |
| 559 |
VCFCutoffCtrl.controller = 1; |
| 560 |
break; |
| 561 |
case ::gig::vcf_cutoff_ctrl_effect1: |
| 562 |
VCFCutoffCtrl.controller = 12; |
| 563 |
break; |
| 564 |
case ::gig::vcf_cutoff_ctrl_effect2: |
| 565 |
VCFCutoffCtrl.controller = 13; |
| 566 |
break; |
| 567 |
case ::gig::vcf_cutoff_ctrl_breath: |
| 568 |
VCFCutoffCtrl.controller = 2; |
| 569 |
break; |
| 570 |
case ::gig::vcf_cutoff_ctrl_foot: |
| 571 |
VCFCutoffCtrl.controller = 4; |
| 572 |
break; |
| 573 |
case ::gig::vcf_cutoff_ctrl_sustainpedal: |
| 574 |
VCFCutoffCtrl.controller = 64; |
| 575 |
break; |
| 576 |
case ::gig::vcf_cutoff_ctrl_softpedal: |
| 577 |
VCFCutoffCtrl.controller = 67; |
| 578 |
break; |
| 579 |
case ::gig::vcf_cutoff_ctrl_genpurpose7: |
| 580 |
VCFCutoffCtrl.controller = 82; |
| 581 |
break; |
| 582 |
case ::gig::vcf_cutoff_ctrl_genpurpose8: |
| 583 |
VCFCutoffCtrl.controller = 83; |
| 584 |
break; |
| 585 |
case ::gig::vcf_cutoff_ctrl_aftertouch: //TODO: not implemented yet |
| 586 |
case ::gig::vcf_cutoff_ctrl_none: |
| 587 |
default: |
| 588 |
VCFCutoffCtrl.controller = 0; |
| 589 |
break; |
| 590 |
} |
| 591 |
#endif // CONFIG_OVERRIDE_CUTOFF_CTRL |
| 592 |
|
| 593 |
#ifdef CONFIG_OVERRIDE_RESONANCE_CTRL |
| 594 |
VCFResonanceCtrl.controller = CONFIG_OVERRIDE_RESONANCE_CTRL; |
| 595 |
#else // use the one defined in the instrument file |
| 596 |
switch (pDimRgn->VCFResonanceController) { |
| 597 |
case ::gig::vcf_res_ctrl_genpurpose3: |
| 598 |
VCFResonanceCtrl.controller = 18; |
| 599 |
break; |
| 600 |
case ::gig::vcf_res_ctrl_genpurpose4: |
| 601 |
VCFResonanceCtrl.controller = 19; |
| 602 |
break; |
| 603 |
case ::gig::vcf_res_ctrl_genpurpose5: |
| 604 |
VCFResonanceCtrl.controller = 80; |
| 605 |
break; |
| 606 |
case ::gig::vcf_res_ctrl_genpurpose6: |
| 607 |
VCFResonanceCtrl.controller = 81; |
| 608 |
break; |
| 609 |
case ::gig::vcf_res_ctrl_none: |
| 610 |
default: |
| 611 |
VCFResonanceCtrl.controller = 0; |
| 612 |
} |
| 613 |
#endif // CONFIG_OVERRIDE_RESONANCE_CTRL |
| 614 |
|
| 615 |
#ifndef CONFIG_OVERRIDE_FILTER_TYPE |
| 616 |
FilterLeft.SetType(pDimRgn->VCFType); |
| 617 |
FilterRight.SetType(pDimRgn->VCFType); |
| 618 |
#else // override filter type |
| 619 |
FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE); |
| 620 |
FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE); |
| 621 |
#endif // CONFIG_OVERRIDE_FILTER_TYPE |
| 622 |
|
| 623 |
VCFCutoffCtrl.value = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller]; |
| 624 |
VCFResonanceCtrl.value = pEngineChannel->ControllerTable[VCFResonanceCtrl.controller]; |
| 625 |
|
| 626 |
// calculate cutoff frequency |
| 627 |
float cutoff = (!VCFCutoffCtrl.controller) |
| 628 |
? exp((float) (127 - itNoteOnEvent->Param.Note.Velocity) * (float) pDimRgn->VCFVelocityScale * 6.2E-5f * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MAX |
| 629 |
: exp((float) VCFCutoffCtrl.value * 0.00787402f * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MAX; |
| 630 |
|
| 631 |
// calculate resonance |
| 632 |
float resonance = (float) VCFResonanceCtrl.value * 0.00787f; // 0.0..1.0 |
| 633 |
if (pDimRgn->VCFKeyboardTracking) { |
| 634 |
resonance += (float) (itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.00787f; |
| 635 |
} |
| 636 |
Constrain(resonance, 0.0, 1.0); // correct resonance if outside allowed value range (0.0..1.0) |
| 637 |
|
| 638 |
VCFCutoffCtrl.fvalue = cutoff - CONFIG_FILTER_CUTOFF_MIN; |
| 639 |
VCFResonanceCtrl.fvalue = resonance; |
| 640 |
|
| 641 |
FilterUpdateCounter = -1; |
| 642 |
} |
| 643 |
else { |
| 644 |
VCFCutoffCtrl.controller = 0; |
| 645 |
VCFResonanceCtrl.controller = 0; |
| 646 |
} |
| 647 |
|
| 648 |
return 0; // success |
| 649 |
} |
| 650 |
|
| 651 |
/** |
| 652 |
* Renders the audio data for this voice for the current audio fragment. |
| 653 |
* The sample input data can either come from RAM (cached sample or sample |
| 654 |
* part) or directly from disk. The output signal will be rendered by |
| 655 |
* resampling / interpolation. If this voice is a disk streaming voice and |
| 656 |
* the voice completely played back the cached RAM part of the sample, it |
| 657 |
* will automatically switch to disk playback for the next RenderAudio() |
| 658 |
* call. |
| 659 |
* |
| 660 |
* @param Samples - number of samples to be rendered in this audio fragment cycle |
| 661 |
*/ |
| 662 |
void Voice::Render(uint Samples) { |
| 663 |
|
| 664 |
// select default values for synthesis mode bits |
| 665 |
SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, (PitchBase * PitchBend) != 1.0f); |
| 666 |
SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, true); |
| 667 |
SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false); |
| 668 |
|
| 669 |
// Reset the synthesis parameter matrix |
| 670 |
|
| 671 |
pEngine->ResetSynthesisParameters(Event::destination_vca, this->Volume * this->CrossfadeVolume * pEngineChannel->GlobalVolume); |
| 672 |
pEngine->ResetSynthesisParameters(Event::destination_vco, this->PitchBase); |
| 673 |
pEngine->ResetSynthesisParameters(Event::destination_vcfc, VCFCutoffCtrl.fvalue); |
| 674 |
pEngine->ResetSynthesisParameters(Event::destination_vcfr, VCFResonanceCtrl.fvalue); |
| 675 |
|
| 676 |
// Apply events to the synthesis parameter matrix |
| 677 |
ProcessEvents(Samples); |
| 678 |
|
| 679 |
// Let all modulators write their parameter changes to the synthesis parameter matrix for the current audio fragment |
| 680 |
pEG1->Process(Samples, pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents, itTriggerEvent, this->Pos, this->PitchBase * this->PitchBend, itKillEvent); |
| 681 |
pEG2->Process(Samples, pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents, itTriggerEvent, this->Pos, this->PitchBase * this->PitchBend); |
| 682 |
if (pEG3->Process(Samples)) { // if pitch EG is active |
| 683 |
SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, true); |
| 684 |
SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, false); |
| 685 |
} |
| 686 |
pLFO1->Process(Samples); |
| 687 |
pLFO2->Process(Samples); |
| 688 |
if (pLFO3->Process(Samples)) { // if pitch LFO modulation is active |
| 689 |
SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, true); |
| 690 |
SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, false); |
| 691 |
} |
| 692 |
|
| 693 |
if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) |
| 694 |
CalculateBiquadParameters(Samples); // calculate the final biquad filter parameters |
| 695 |
|
| 696 |
switch (this->PlaybackState) { |
| 697 |
|
| 698 |
case playback_state_init: |
| 699 |
this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed |
| 700 |
// no break - continue with playback_state_ram |
| 701 |
|
| 702 |
case playback_state_ram: { |
| 703 |
if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping |
| 704 |
|
| 705 |
// render current fragment |
| 706 |
Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay); |
| 707 |
|
| 708 |
if (DiskVoice) { |
| 709 |
// check if we reached the allowed limit of the sample RAM cache |
| 710 |
if (Pos > MaxRAMPos) { |
| 711 |
dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", Pos)); |
| 712 |
this->PlaybackState = playback_state_disk; |
| 713 |
} |
| 714 |
} |
| 715 |
else if (Pos >= pSample->GetCache().Size / pSample->FrameSize) { |
| 716 |
this->PlaybackState = playback_state_end; |
| 717 |
} |
| 718 |
} |
| 719 |
break; |
| 720 |
|
| 721 |
case playback_state_disk: { |
| 722 |
if (!DiskStreamRef.pStream) { |
| 723 |
// check if the disk thread created our ordered disk stream in the meantime |
| 724 |
DiskStreamRef.pStream = pDiskThread->AskForCreatedStream(DiskStreamRef.OrderID); |
| 725 |
if (!DiskStreamRef.pStream) { |
| 726 |
std::cout << stderr << "Disk stream not available in time!" << std::endl << std::flush; |
| 727 |
KillImmediately(); |
| 728 |
return; |
| 729 |
} |
| 730 |
DiskStreamRef.pStream->IncrementReadPos(pSample->Channels * (int(Pos) - MaxRAMPos)); |
| 731 |
Pos -= int(Pos); |
| 732 |
RealSampleWordsLeftToRead = -1; // -1 means no silence has been added yet |
| 733 |
} |
| 734 |
|
| 735 |
const int sampleWordsLeftToRead = DiskStreamRef.pStream->GetReadSpace(); |
| 736 |
|
| 737 |
// add silence sample at the end if we reached the end of the stream (for the interpolator) |
| 738 |
if (DiskStreamRef.State == Stream::state_end) { |
| 739 |
const int maxSampleWordsPerCycle = (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) * pSample->Channels + 6; // +6 for the interpolator algorithm |
| 740 |
if (sampleWordsLeftToRead <= maxSampleWordsPerCycle) { |
| 741 |
// remember how many sample words there are before any silence has been added |
| 742 |
if (RealSampleWordsLeftToRead < 0) RealSampleWordsLeftToRead = sampleWordsLeftToRead; |
| 743 |
DiskStreamRef.pStream->WriteSilence(maxSampleWordsPerCycle - sampleWordsLeftToRead); |
| 744 |
} |
| 745 |
} |
| 746 |
|
| 747 |
sample_t* ptr = DiskStreamRef.pStream->GetReadPtr(); // get the current read_ptr within the ringbuffer where we read the samples from |
| 748 |
|
| 749 |
// render current audio fragment |
| 750 |
Synthesize(Samples, ptr, Delay); |
| 751 |
|
| 752 |
const int iPos = (int) Pos; |
| 753 |
const int readSampleWords = iPos * pSample->Channels; // amount of sample words actually been read |
| 754 |
DiskStreamRef.pStream->IncrementReadPos(readSampleWords); |
| 755 |
Pos -= iPos; // just keep fractional part of Pos |
| 756 |
|
| 757 |
// change state of voice to 'end' if we really reached the end of the sample data |
| 758 |
if (RealSampleWordsLeftToRead >= 0) { |
| 759 |
RealSampleWordsLeftToRead -= readSampleWords; |
| 760 |
if (RealSampleWordsLeftToRead <= 0) this->PlaybackState = playback_state_end; |
| 761 |
} |
| 762 |
} |
| 763 |
break; |
| 764 |
|
| 765 |
case playback_state_end: |
| 766 |
std::cerr << "gig::Voice::Render(): entered with playback_state_end, this is a bug!\n" << std::flush; |
| 767 |
break; |
| 768 |
} |
| 769 |
|
| 770 |
// Reset synthesis event lists (except VCO, as VCO events apply channel wide currently) |
| 771 |
pEngineChannel->pSynthesisEvents[Event::destination_vca]->clear(); |
| 772 |
pEngineChannel->pSynthesisEvents[Event::destination_vcfc]->clear(); |
| 773 |
pEngineChannel->pSynthesisEvents[Event::destination_vcfr]->clear(); |
| 774 |
|
| 775 |
// Reset delay |
| 776 |
Delay = 0; |
| 777 |
|
| 778 |
itTriggerEvent = Pool<Event>::Iterator(); |
| 779 |
|
| 780 |
// If sample stream or release stage finished, kill the voice |
| 781 |
if (PlaybackState == playback_state_end || pEG1->GetStage() == EGADSR::stage_end) KillImmediately(); |
| 782 |
} |
| 783 |
|
| 784 |
/** |
| 785 |
* Resets voice variables. Should only be called if rendering process is |
| 786 |
* suspended / not running. |
| 787 |
*/ |
| 788 |
void Voice::Reset() { |
| 789 |
pLFO1->Reset(); |
| 790 |
pLFO2->Reset(); |
| 791 |
pLFO3->Reset(); |
| 792 |
FilterLeft.Reset(); |
| 793 |
FilterRight.Reset(); |
| 794 |
DiskStreamRef.pStream = NULL; |
| 795 |
DiskStreamRef.hStream = 0; |
| 796 |
DiskStreamRef.State = Stream::state_unused; |
| 797 |
DiskStreamRef.OrderID = 0; |
| 798 |
PlaybackState = playback_state_end; |
| 799 |
itTriggerEvent = Pool<Event>::Iterator(); |
| 800 |
itKillEvent = Pool<Event>::Iterator(); |
| 801 |
} |
| 802 |
|
| 803 |
/** |
| 804 |
* Process the control change event lists of the engine for the current |
| 805 |
* audio fragment. Event values will be applied to the synthesis parameter |
| 806 |
* matrix. |
| 807 |
* |
| 808 |
* @param Samples - number of samples to be rendered in this audio fragment cycle |
| 809 |
*/ |
| 810 |
void Voice::ProcessEvents(uint Samples) { |
| 811 |
|
| 812 |
// dispatch control change events |
| 813 |
RTList<Event>::Iterator itCCEvent = pEngineChannel->pCCEvents->first(); |
| 814 |
if (Delay) { // skip events that happened before this voice was triggered |
| 815 |
while (itCCEvent && itCCEvent->FragmentPos() <= Delay) ++itCCEvent; |
| 816 |
} |
| 817 |
while (itCCEvent) { |
| 818 |
if (itCCEvent->Param.CC.Controller) { // if valid MIDI controller |
| 819 |
if (itCCEvent->Param.CC.Controller == VCFCutoffCtrl.controller) { |
| 820 |
*pEngineChannel->pSynthesisEvents[Event::destination_vcfc]->allocAppend() = *itCCEvent; |
| 821 |
} |
| 822 |
if (itCCEvent->Param.CC.Controller == VCFResonanceCtrl.controller) { |
| 823 |
*pEngineChannel->pSynthesisEvents[Event::destination_vcfr]->allocAppend() = *itCCEvent; |
| 824 |
} |
| 825 |
if (itCCEvent->Param.CC.Controller == pLFO1->ExtController) { |
| 826 |
pLFO1->SendEvent(itCCEvent); |
| 827 |
} |
| 828 |
if (itCCEvent->Param.CC.Controller == pLFO2->ExtController) { |
| 829 |
pLFO2->SendEvent(itCCEvent); |
| 830 |
} |
| 831 |
if (itCCEvent->Param.CC.Controller == pLFO3->ExtController) { |
| 832 |
pLFO3->SendEvent(itCCEvent); |
| 833 |
} |
| 834 |
if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange && |
| 835 |
itCCEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) { // if crossfade event |
| 836 |
*pEngineChannel->pSynthesisEvents[Event::destination_vca]->allocAppend() = *itCCEvent; |
| 837 |
} |
| 838 |
} |
| 839 |
|
| 840 |
++itCCEvent; |
| 841 |
} |
| 842 |
|
| 843 |
|
| 844 |
// process pitch events |
| 845 |
{ |
| 846 |
RTList<Event>* pVCOEventList = pEngineChannel->pSynthesisEvents[Event::destination_vco]; |
| 847 |
RTList<Event>::Iterator itVCOEvent = pVCOEventList->first(); |
| 848 |
if (Delay) { // skip events that happened before this voice was triggered |
| 849 |
while (itVCOEvent && itVCOEvent->FragmentPos() <= Delay) ++itVCOEvent; |
| 850 |
} |
| 851 |
// apply old pitchbend value until first pitch event occurs |
| 852 |
if (this->PitchBend != 1.0) { |
| 853 |
uint end = (itVCOEvent) ? itVCOEvent->FragmentPos() : Samples; |
| 854 |
for (uint i = Delay; i < end; i++) { |
| 855 |
pEngine->pSynthesisParameters[Event::destination_vco][i] *= this->PitchBend; |
| 856 |
} |
| 857 |
} |
| 858 |
float pitch; |
| 859 |
while (itVCOEvent) { |
| 860 |
RTList<Event>::Iterator itNextVCOEvent = itVCOEvent; |
| 861 |
++itNextVCOEvent; |
| 862 |
|
| 863 |
// calculate the influence length of this event (in sample points) |
| 864 |
uint end = (itNextVCOEvent) ? itNextVCOEvent->FragmentPos() : Samples; |
| 865 |
|
| 866 |
pitch = RTMath::CentsToFreqRatio(((double) itVCOEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents |
| 867 |
|
| 868 |
// apply pitch value to the pitch parameter sequence |
| 869 |
for (uint i = itVCOEvent->FragmentPos(); i < end; i++) { |
| 870 |
pEngine->pSynthesisParameters[Event::destination_vco][i] *= pitch; |
| 871 |
} |
| 872 |
|
| 873 |
itVCOEvent = itNextVCOEvent; |
| 874 |
} |
| 875 |
if (!pVCOEventList->isEmpty()) { |
| 876 |
this->PitchBend = pitch; |
| 877 |
SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, true); |
| 878 |
SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, false); |
| 879 |
} |
| 880 |
} |
| 881 |
|
| 882 |
// process volume / attenuation events (TODO: we only handle and _expect_ crossfade events here ATM !) |
| 883 |
{ |
| 884 |
RTList<Event>* pVCAEventList = pEngineChannel->pSynthesisEvents[Event::destination_vca]; |
| 885 |
RTList<Event>::Iterator itVCAEvent = pVCAEventList->first(); |
| 886 |
if (Delay) { // skip events that happened before this voice was triggered |
| 887 |
while (itVCAEvent && itVCAEvent->FragmentPos() <= Delay) ++itVCAEvent; |
| 888 |
} |
| 889 |
float crossfadevolume; |
| 890 |
while (itVCAEvent) { |
| 891 |
RTList<Event>::Iterator itNextVCAEvent = itVCAEvent; |
| 892 |
++itNextVCAEvent; |
| 893 |
|
| 894 |
// calculate the influence length of this event (in sample points) |
| 895 |
uint end = (itNextVCAEvent) ? itNextVCAEvent->FragmentPos() : Samples; |
| 896 |
|
| 897 |
crossfadevolume = CrossfadeAttenuation(itVCAEvent->Param.CC.Value); |
| 898 |
|
| 899 |
float effective_volume = crossfadevolume * this->Volume * pEngineChannel->GlobalVolume; |
| 900 |
|
| 901 |
// apply volume value to the volume parameter sequence |
| 902 |
for (uint i = itVCAEvent->FragmentPos(); i < end; i++) { |
| 903 |
pEngine->pSynthesisParameters[Event::destination_vca][i] = effective_volume; |
| 904 |
} |
| 905 |
|
| 906 |
itVCAEvent = itNextVCAEvent; |
| 907 |
} |
| 908 |
if (!pVCAEventList->isEmpty()) this->CrossfadeVolume = crossfadevolume; |
| 909 |
} |
| 910 |
|
| 911 |
// process filter cutoff events |
| 912 |
{ |
| 913 |
RTList<Event>* pCutoffEventList = pEngineChannel->pSynthesisEvents[Event::destination_vcfc]; |
| 914 |
RTList<Event>::Iterator itCutoffEvent = pCutoffEventList->first(); |
| 915 |
if (Delay) { // skip events that happened before this voice was triggered |
| 916 |
while (itCutoffEvent && itCutoffEvent->FragmentPos() <= Delay) ++itCutoffEvent; |
| 917 |
} |
| 918 |
float cutoff; |
| 919 |
while (itCutoffEvent) { |
| 920 |
RTList<Event>::Iterator itNextCutoffEvent = itCutoffEvent; |
| 921 |
++itNextCutoffEvent; |
| 922 |
|
| 923 |
// calculate the influence length of this event (in sample points) |
| 924 |
uint end = (itNextCutoffEvent) ? itNextCutoffEvent->FragmentPos() : Samples; |
| 925 |
|
| 926 |
cutoff = exp((float) itCutoffEvent->Param.CC.Value * 0.00787402f * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MAX - CONFIG_FILTER_CUTOFF_MIN; |
| 927 |
|
| 928 |
// apply cutoff frequency to the cutoff parameter sequence |
| 929 |
for (uint i = itCutoffEvent->FragmentPos(); i < end; i++) { |
| 930 |
pEngine->pSynthesisParameters[Event::destination_vcfc][i] = cutoff; |
| 931 |
} |
| 932 |
|
| 933 |
itCutoffEvent = itNextCutoffEvent; |
| 934 |
} |
| 935 |
if (!pCutoffEventList->isEmpty()) VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of parameter matrix next time |
| 936 |
} |
| 937 |
|
| 938 |
// process filter resonance events |
| 939 |
{ |
| 940 |
RTList<Event>* pResonanceEventList = pEngineChannel->pSynthesisEvents[Event::destination_vcfr]; |
| 941 |
RTList<Event>::Iterator itResonanceEvent = pResonanceEventList->first(); |
| 942 |
if (Delay) { // skip events that happened before this voice was triggered |
| 943 |
while (itResonanceEvent && itResonanceEvent->FragmentPos() <= Delay) ++itResonanceEvent; |
| 944 |
} |
| 945 |
while (itResonanceEvent) { |
| 946 |
RTList<Event>::Iterator itNextResonanceEvent = itResonanceEvent; |
| 947 |
++itNextResonanceEvent; |
| 948 |
|
| 949 |
// calculate the influence length of this event (in sample points) |
| 950 |
uint end = (itNextResonanceEvent) ? itNextResonanceEvent->FragmentPos() : Samples; |
| 951 |
|
| 952 |
// convert absolute controller value to differential |
| 953 |
int ctrldelta = itResonanceEvent->Param.CC.Value - VCFResonanceCtrl.value; |
| 954 |
VCFResonanceCtrl.value = itResonanceEvent->Param.CC.Value; |
| 955 |
|
| 956 |
float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0 |
| 957 |
|
| 958 |
// apply cutoff frequency to the cutoff parameter sequence |
| 959 |
for (uint i = itResonanceEvent->FragmentPos(); i < end; i++) { |
| 960 |
pEngine->pSynthesisParameters[Event::destination_vcfr][i] += resonancedelta; |
| 961 |
} |
| 962 |
|
| 963 |
itResonanceEvent = itNextResonanceEvent; |
| 964 |
} |
| 965 |
if (!pResonanceEventList->isEmpty()) VCFResonanceCtrl.fvalue = pResonanceEventList->last()->Param.CC.Value * 0.00787f; // needed for initialization of parameter matrix next time |
| 966 |
} |
| 967 |
} |
| 968 |
|
| 969 |
/** |
| 970 |
* Calculate all necessary, final biquad filter parameters. |
| 971 |
* |
| 972 |
* @param Samples - number of samples to be rendered in this audio fragment cycle |
| 973 |
*/ |
| 974 |
void Voice::CalculateBiquadParameters(uint Samples) { |
| 975 |
biquad_param_t bqbase; |
| 976 |
biquad_param_t bqmain; |
| 977 |
float prev_cutoff = pEngine->pSynthesisParameters[Event::destination_vcfc][0]; |
| 978 |
float prev_res = pEngine->pSynthesisParameters[Event::destination_vcfr][0]; |
| 979 |
FilterLeft.SetParameters( &bqbase, &bqmain, prev_cutoff + CONFIG_FILTER_CUTOFF_MIN, prev_res, pEngine->SampleRate); |
| 980 |
FilterRight.SetParameters(&bqbase, &bqmain, prev_cutoff + CONFIG_FILTER_CUTOFF_MIN, prev_res, pEngine->SampleRate); |
| 981 |
pEngine->pBasicFilterParameters[0] = bqbase; |
| 982 |
pEngine->pMainFilterParameters[0] = bqmain; |
| 983 |
|
| 984 |
float* bq; |
| 985 |
for (int i = 1; i < Samples; i++) { |
| 986 |
// recalculate biquad parameters if cutoff or resonance differ from previous sample point |
| 987 |
if (!(i & FILTER_UPDATE_MASK)) { |
| 988 |
if (pEngine->pSynthesisParameters[Event::destination_vcfr][i] != prev_res || |
| 989 |
pEngine->pSynthesisParameters[Event::destination_vcfc][i] != prev_cutoff) |
| 990 |
{ |
| 991 |
prev_cutoff = pEngine->pSynthesisParameters[Event::destination_vcfc][i]; |
| 992 |
prev_res = pEngine->pSynthesisParameters[Event::destination_vcfr][i]; |
| 993 |
FilterLeft.SetParameters( &bqbase, &bqmain, prev_cutoff + CONFIG_FILTER_CUTOFF_MIN, prev_res, pEngine->SampleRate); |
| 994 |
FilterRight.SetParameters(&bqbase, &bqmain, prev_cutoff + CONFIG_FILTER_CUTOFF_MIN, prev_res, pEngine->SampleRate); |
| 995 |
} |
| 996 |
} |
| 997 |
|
| 998 |
//same as 'pEngine->pBasicFilterParameters[i] = bqbase;' |
| 999 |
bq = (float*) &pEngine->pBasicFilterParameters[i]; |
| 1000 |
bq[0] = bqbase.b0; |
| 1001 |
bq[1] = bqbase.b1; |
| 1002 |
bq[2] = bqbase.b2; |
| 1003 |
bq[3] = bqbase.a1; |
| 1004 |
bq[4] = bqbase.a2; |
| 1005 |
|
| 1006 |
// same as 'pEngine->pMainFilterParameters[i] = bqmain;' |
| 1007 |
bq = (float*) &pEngine->pMainFilterParameters[i]; |
| 1008 |
bq[0] = bqmain.b0; |
| 1009 |
bq[1] = bqmain.b1; |
| 1010 |
bq[2] = bqmain.b2; |
| 1011 |
bq[3] = bqmain.a1; |
| 1012 |
bq[4] = bqmain.a2; |
| 1013 |
} |
| 1014 |
} |
| 1015 |
|
| 1016 |
/** |
| 1017 |
* Synthesizes the current audio fragment for this voice. |
| 1018 |
* |
| 1019 |
* @param Samples - number of sample points to be rendered in this audio |
| 1020 |
* fragment cycle |
| 1021 |
* @param pSrc - pointer to input sample data |
| 1022 |
* @param Skip - number of sample points to skip in output buffer |
| 1023 |
*/ |
| 1024 |
void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) { |
| 1025 |
RunSynthesisFunction(SynthesisMode, *this, Samples, pSrc, Skip); |
| 1026 |
} |
| 1027 |
|
| 1028 |
/** |
| 1029 |
* Immediately kill the voice. This method should not be used to kill |
| 1030 |
* a normal, active voice, because it doesn't take care of things like |
| 1031 |
* fading down the volume level to avoid clicks and regular processing |
| 1032 |
* until the kill event actually occured! |
| 1033 |
* |
| 1034 |
* @see Kill() |
| 1035 |
*/ |
| 1036 |
void Voice::KillImmediately() { |
| 1037 |
if (DiskVoice && DiskStreamRef.State != Stream::state_unused) { |
| 1038 |
pDiskThread->OrderDeletionOfStream(&DiskStreamRef); |
| 1039 |
} |
| 1040 |
Reset(); |
| 1041 |
} |
| 1042 |
|
| 1043 |
/** |
| 1044 |
* Kill the voice in regular sense. Let the voice render audio until |
| 1045 |
* the kill event actually occured and then fade down the volume level |
| 1046 |
* very quickly and let the voice die finally. Unlike a normal release |
| 1047 |
* of a voice, a kill process cannot be cancalled and is therefore |
| 1048 |
* usually used for voice stealing and key group conflicts. |
| 1049 |
* |
| 1050 |
* @param itKillEvent - event which caused the voice to be killed |
| 1051 |
*/ |
| 1052 |
void Voice::Kill(Pool<Event>::Iterator& itKillEvent) { |
| 1053 |
#if CONFIG_DEVMODE |
| 1054 |
if (!itKillEvent) dmsg(1,("gig::Voice::Kill(): ERROR, !itKillEvent !!!\n")); |
| 1055 |
if (itKillEvent && !itKillEvent.isValid()) dmsg(1,("gig::Voice::Kill(): ERROR, itKillEvent invalid !!!\n")); |
| 1056 |
#endif // CONFIG_DEVMODE |
| 1057 |
|
| 1058 |
if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return; |
| 1059 |
this->itKillEvent = itKillEvent; |
| 1060 |
} |
| 1061 |
|
| 1062 |
}} // namespace LinuxSampler::gig |
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