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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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* * |
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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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|
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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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// FIXME: no support for layers (nor crossfades) yet |
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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(FILTER_CUTOFF_MIN / FILTER_CUTOFF_MAX); |
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} |
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|
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int Voice::CalculateFilterUpdateMask() { |
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if (FILTER_UPDATE_PERIOD <= 0) return 0; |
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int power_of_two; |
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for (power_of_two = 0; 1<<power_of_two < FILTER_UPDATE_PERIOD; 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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Active = false; |
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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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} |
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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 pNoteOnEvent - 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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* @returns 0 on success, a value < 0 if something failed |
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*/ |
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int Voice::Trigger(Event* pNoteOnEvent, int PitchBend, ::gig::Instrument* pInstrument) { |
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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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|
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Active = true; |
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MIDIKey = pNoteOnEvent->Key; |
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pRegion = pInstrument->GetRegion(MIDIKey); |
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PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed |
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Pos = 0; |
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Delay = pNoteOnEvent->FragmentPos(); |
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pTriggerEvent = pNoteOnEvent; |
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|
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if (!pRegion) { |
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std::cerr << "gig::Voice: No Region defined for MIDI key " << MIDIKey << std::endl << std::flush; |
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Kill(); |
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return -1; |
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} |
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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[5] = {0,0,0,0,0}; |
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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] = 0; //TODO: we currently ignore this dimension |
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break; |
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case ::gig::dimension_velocity: |
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DimValues[i] = pNoteOnEvent->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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DimValues[i] = 0; //TODO: we currently ignore this dimension |
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break; |
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case ::gig::dimension_keyboard: |
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DimValues[i] = (uint) pNoteOnEvent->Key; |
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break; |
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case ::gig::dimension_modwheel: |
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DimValues[i] = pEngine->ControllerTable[1]; |
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break; |
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case ::gig::dimension_breath: |
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DimValues[i] = pEngine->ControllerTable[2]; |
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break; |
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case ::gig::dimension_foot: |
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DimValues[i] = pEngine->ControllerTable[4]; |
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break; |
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case ::gig::dimension_portamentotime: |
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DimValues[i] = pEngine->ControllerTable[5]; |
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break; |
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case ::gig::dimension_effect1: |
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DimValues[i] = pEngine->ControllerTable[12]; |
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break; |
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case ::gig::dimension_effect2: |
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DimValues[i] = pEngine->ControllerTable[13]; |
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break; |
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case ::gig::dimension_genpurpose1: |
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DimValues[i] = pEngine->ControllerTable[16]; |
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break; |
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case ::gig::dimension_genpurpose2: |
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DimValues[i] = pEngine->ControllerTable[17]; |
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break; |
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case ::gig::dimension_genpurpose3: |
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DimValues[i] = pEngine->ControllerTable[18]; |
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break; |
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case ::gig::dimension_genpurpose4: |
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DimValues[i] = pEngine->ControllerTable[19]; |
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break; |
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case ::gig::dimension_sustainpedal: |
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DimValues[i] = pEngine->ControllerTable[64]; |
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break; |
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case ::gig::dimension_portamento: |
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DimValues[i] = pEngine->ControllerTable[65]; |
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break; |
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case ::gig::dimension_sostenutopedal: |
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DimValues[i] = pEngine->ControllerTable[66]; |
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break; |
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case ::gig::dimension_softpedal: |
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DimValues[i] = pEngine->ControllerTable[67]; |
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break; |
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case ::gig::dimension_genpurpose5: |
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DimValues[i] = pEngine->ControllerTable[80]; |
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break; |
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case ::gig::dimension_genpurpose6: |
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DimValues[i] = pEngine->ControllerTable[81]; |
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break; |
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case ::gig::dimension_genpurpose7: |
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DimValues[i] = pEngine->ControllerTable[82]; |
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break; |
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case ::gig::dimension_genpurpose8: |
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DimValues[i] = pEngine->ControllerTable[83]; |
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break; |
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case ::gig::dimension_effect1depth: |
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DimValues[i] = pEngine->ControllerTable[91]; |
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break; |
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case ::gig::dimension_effect2depth: |
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DimValues[i] = pEngine->ControllerTable[92]; |
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break; |
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case ::gig::dimension_effect3depth: |
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DimValues[i] = pEngine->ControllerTable[93]; |
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break; |
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case ::gig::dimension_effect4depth: |
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DimValues[i] = pEngine->ControllerTable[94]; |
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break; |
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case ::gig::dimension_effect5depth: |
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DimValues[i] = pEngine->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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::gig::DimensionRegion* pDimRgn = pRegion->GetDimensionRegionByValue(DimValues[4],DimValues[3],DimValues[2],DimValues[1],DimValues[0]); |
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|
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pSample = pDimRgn->pSample; // sample won't change until the voice is finished |
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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 << 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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Kill(); |
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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 * 10; |
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if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100; |
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this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents); |
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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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|
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Volume = pDimRgn->GetVelocityAttenuation(pNoteOnEvent->Velocity) / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0) |
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|
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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 |
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break; |
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case ::gig::eg1_ctrl_t::type_velocity: |
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eg1controllervalue = pNoteOnEvent->Velocity; |
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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 = pEngine->ControllerTable[pDimRgn->EG1Controller.controller_number]; |
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break; |
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} |
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if (pDimRgn->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue; |
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|
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// calculate influence of EG1 controller on EG1's parameters (TODO: needs to be fine tuned) |
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double eg1attack = (pDimRgn->EG1ControllerAttackInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 0.0; |
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double eg1decay = (pDimRgn->EG1ControllerDecayInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence) * eg1controllervalue : 0.0; |
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double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 0.0; |
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|
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pEG1->Trigger(pDimRgn->EG1PreAttack, |
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pDimRgn->EG1Attack + eg1attack, |
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pDimRgn->EG1Hold, |
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pSample->LoopStart, |
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pDimRgn->EG1Decay1 + eg1decay, |
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pDimRgn->EG1Decay2 + eg1decay, |
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pDimRgn->EG1InfiniteSustain, |
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pDimRgn->EG1Sustain, |
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pDimRgn->EG1Release + eg1release, |
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Delay); |
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} |
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|
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|
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#if ENABLE_FILTER |
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// setup EG 2 (VCF Cutoff EG) |
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{ |
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// get current value of EG2 controller |
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double eg2controllervalue; |
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switch (pDimRgn->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 = 0; // TODO: aftertouch not yet supported |
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break; |
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case ::gig::eg2_ctrl_t::type_velocity: |
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eg2controllervalue = pNoteOnEvent->Velocity; |
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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 = pEngine->ControllerTable[pDimRgn->EG2Controller.controller_number]; |
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break; |
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} |
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if (pDimRgn->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue; |
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|
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// calculate influence of EG2 controller on EG2's parameters (TODO: needs to be fine tuned) |
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double eg2attack = (pDimRgn->EG2ControllerAttackInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence) * eg2controllervalue : 0.0; |
| 340 |
double eg2decay = (pDimRgn->EG2ControllerDecayInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence) * eg2controllervalue : 0.0; |
| 341 |
double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 0.0; |
| 342 |
|
| 343 |
pEG2->Trigger(pDimRgn->EG2PreAttack, |
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pDimRgn->EG2Attack + eg2attack, |
| 345 |
false, |
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pSample->LoopStart, |
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pDimRgn->EG2Decay1 + eg2decay, |
| 348 |
pDimRgn->EG2Decay2 + eg2decay, |
| 349 |
pDimRgn->EG2InfiniteSustain, |
| 350 |
pDimRgn->EG2Sustain, |
| 351 |
pDimRgn->EG2Release + eg2release, |
| 352 |
Delay); |
| 353 |
} |
| 354 |
#endif // ENABLE_FILTER |
| 355 |
|
| 356 |
|
| 357 |
// setup EG 3 (VCO EG) |
| 358 |
{ |
| 359 |
double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth); |
| 360 |
pEG3->Trigger(eg3depth, pDimRgn->EG3Attack, Delay); |
| 361 |
} |
| 362 |
|
| 363 |
|
| 364 |
// setup LFO 1 (VCA LFO) |
| 365 |
{ |
| 366 |
uint16_t lfo1_internal_depth; |
| 367 |
switch (pDimRgn->LFO1Controller) { |
| 368 |
case ::gig::lfo1_ctrl_internal: |
| 369 |
lfo1_internal_depth = pDimRgn->LFO1InternalDepth; |
| 370 |
pLFO1->ExtController = 0; // no external controller |
| 371 |
break; |
| 372 |
case ::gig::lfo1_ctrl_modwheel: |
| 373 |
lfo1_internal_depth = 0; |
| 374 |
pLFO1->ExtController = 1; // MIDI controller 1 |
| 375 |
break; |
| 376 |
case ::gig::lfo1_ctrl_breath: |
| 377 |
lfo1_internal_depth = 0; |
| 378 |
pLFO1->ExtController = 2; // MIDI controller 2 |
| 379 |
break; |
| 380 |
case ::gig::lfo1_ctrl_internal_modwheel: |
| 381 |
lfo1_internal_depth = pDimRgn->LFO1InternalDepth; |
| 382 |
pLFO1->ExtController = 1; // MIDI controller 1 |
| 383 |
break; |
| 384 |
case ::gig::lfo1_ctrl_internal_breath: |
| 385 |
lfo1_internal_depth = pDimRgn->LFO1InternalDepth; |
| 386 |
pLFO1->ExtController = 2; // MIDI controller 2 |
| 387 |
break; |
| 388 |
default: |
| 389 |
lfo1_internal_depth = 0; |
| 390 |
pLFO1->ExtController = 0; // no external controller |
| 391 |
} |
| 392 |
pLFO1->Trigger(pDimRgn->LFO1Frequency, |
| 393 |
lfo1_internal_depth, |
| 394 |
pDimRgn->LFO1ControlDepth, |
| 395 |
pEngine->ControllerTable[pLFO1->ExtController], |
| 396 |
pDimRgn->LFO1FlipPhase, |
| 397 |
pEngine->SampleRate, |
| 398 |
Delay); |
| 399 |
} |
| 400 |
|
| 401 |
#if ENABLE_FILTER |
| 402 |
// setup LFO 2 (VCF Cutoff LFO) |
| 403 |
{ |
| 404 |
uint16_t lfo2_internal_depth; |
| 405 |
switch (pDimRgn->LFO2Controller) { |
| 406 |
case ::gig::lfo2_ctrl_internal: |
| 407 |
lfo2_internal_depth = pDimRgn->LFO2InternalDepth; |
| 408 |
pLFO2->ExtController = 0; // no external controller |
| 409 |
break; |
| 410 |
case ::gig::lfo2_ctrl_modwheel: |
| 411 |
lfo2_internal_depth = 0; |
| 412 |
pLFO2->ExtController = 1; // MIDI controller 1 |
| 413 |
break; |
| 414 |
case ::gig::lfo2_ctrl_foot: |
| 415 |
lfo2_internal_depth = 0; |
| 416 |
pLFO2->ExtController = 4; // MIDI controller 4 |
| 417 |
break; |
| 418 |
case ::gig::lfo2_ctrl_internal_modwheel: |
| 419 |
lfo2_internal_depth = pDimRgn->LFO2InternalDepth; |
| 420 |
pLFO2->ExtController = 1; // MIDI controller 1 |
| 421 |
break; |
| 422 |
case ::gig::lfo2_ctrl_internal_foot: |
| 423 |
lfo2_internal_depth = pDimRgn->LFO2InternalDepth; |
| 424 |
pLFO2->ExtController = 4; // MIDI controller 4 |
| 425 |
break; |
| 426 |
default: |
| 427 |
lfo2_internal_depth = 0; |
| 428 |
pLFO2->ExtController = 0; // no external controller |
| 429 |
} |
| 430 |
pLFO2->Trigger(pDimRgn->LFO2Frequency, |
| 431 |
lfo2_internal_depth, |
| 432 |
pDimRgn->LFO2ControlDepth, |
| 433 |
pEngine->ControllerTable[pLFO2->ExtController], |
| 434 |
pDimRgn->LFO2FlipPhase, |
| 435 |
pEngine->SampleRate, |
| 436 |
Delay); |
| 437 |
} |
| 438 |
#endif // ENABLE_FILTER |
| 439 |
|
| 440 |
// setup LFO 3 (VCO LFO) |
| 441 |
{ |
| 442 |
uint16_t lfo3_internal_depth; |
| 443 |
switch (pDimRgn->LFO3Controller) { |
| 444 |
case ::gig::lfo3_ctrl_internal: |
| 445 |
lfo3_internal_depth = pDimRgn->LFO3InternalDepth; |
| 446 |
pLFO3->ExtController = 0; // no external controller |
| 447 |
break; |
| 448 |
case ::gig::lfo3_ctrl_modwheel: |
| 449 |
lfo3_internal_depth = 0; |
| 450 |
pLFO3->ExtController = 1; // MIDI controller 1 |
| 451 |
break; |
| 452 |
case ::gig::lfo3_ctrl_aftertouch: |
| 453 |
lfo3_internal_depth = 0; |
| 454 |
pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet |
| 455 |
break; |
| 456 |
case ::gig::lfo3_ctrl_internal_modwheel: |
| 457 |
lfo3_internal_depth = pDimRgn->LFO3InternalDepth; |
| 458 |
pLFO3->ExtController = 1; // MIDI controller 1 |
| 459 |
break; |
| 460 |
case ::gig::lfo3_ctrl_internal_aftertouch: |
| 461 |
lfo3_internal_depth = pDimRgn->LFO3InternalDepth; |
| 462 |
pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet |
| 463 |
break; |
| 464 |
default: |
| 465 |
lfo3_internal_depth = 0; |
| 466 |
pLFO3->ExtController = 0; // no external controller |
| 467 |
} |
| 468 |
pLFO3->Trigger(pDimRgn->LFO3Frequency, |
| 469 |
lfo3_internal_depth, |
| 470 |
pDimRgn->LFO3ControlDepth, |
| 471 |
pEngine->ControllerTable[pLFO3->ExtController], |
| 472 |
false, |
| 473 |
pEngine->SampleRate, |
| 474 |
Delay); |
| 475 |
} |
| 476 |
|
| 477 |
#if ENABLE_FILTER |
| 478 |
#if FORCE_FILTER_USAGE |
| 479 |
FilterLeft.Enabled = FilterRight.Enabled = true; |
| 480 |
#else // use filter only if instrument file told so |
| 481 |
FilterLeft.Enabled = FilterRight.Enabled = pDimRgn->VCFEnabled; |
| 482 |
#endif // FORCE_FILTER_USAGE |
| 483 |
if (pDimRgn->VCFEnabled) { |
| 484 |
#ifdef OVERRIDE_FILTER_CUTOFF_CTRL |
| 485 |
VCFCutoffCtrl.controller = OVERRIDE_FILTER_CUTOFF_CTRL; |
| 486 |
#else // use the one defined in the instrument file |
| 487 |
switch (pDimRgn->VCFCutoffController) { |
| 488 |
case ::gig::vcf_cutoff_ctrl_modwheel: |
| 489 |
VCFCutoffCtrl.controller = 1; |
| 490 |
break; |
| 491 |
case ::gig::vcf_cutoff_ctrl_effect1: |
| 492 |
VCFCutoffCtrl.controller = 12; |
| 493 |
break; |
| 494 |
case ::gig::vcf_cutoff_ctrl_effect2: |
| 495 |
VCFCutoffCtrl.controller = 13; |
| 496 |
break; |
| 497 |
case ::gig::vcf_cutoff_ctrl_breath: |
| 498 |
VCFCutoffCtrl.controller = 2; |
| 499 |
break; |
| 500 |
case ::gig::vcf_cutoff_ctrl_foot: |
| 501 |
VCFCutoffCtrl.controller = 4; |
| 502 |
break; |
| 503 |
case ::gig::vcf_cutoff_ctrl_sustainpedal: |
| 504 |
VCFCutoffCtrl.controller = 64; |
| 505 |
break; |
| 506 |
case ::gig::vcf_cutoff_ctrl_softpedal: |
| 507 |
VCFCutoffCtrl.controller = 67; |
| 508 |
break; |
| 509 |
case ::gig::vcf_cutoff_ctrl_genpurpose7: |
| 510 |
VCFCutoffCtrl.controller = 82; |
| 511 |
break; |
| 512 |
case ::gig::vcf_cutoff_ctrl_genpurpose8: |
| 513 |
VCFCutoffCtrl.controller = 83; |
| 514 |
break; |
| 515 |
case ::gig::vcf_cutoff_ctrl_aftertouch: //TODO: not implemented yet |
| 516 |
case ::gig::vcf_cutoff_ctrl_none: |
| 517 |
default: |
| 518 |
VCFCutoffCtrl.controller = 0; |
| 519 |
break; |
| 520 |
} |
| 521 |
#endif // OVERRIDE_FILTER_CUTOFF_CTRL |
| 522 |
|
| 523 |
#ifdef OVERRIDE_FILTER_RES_CTRL |
| 524 |
VCFResonanceCtrl.controller = OVERRIDE_FILTER_RES_CTRL; |
| 525 |
#else // use the one defined in the instrument file |
| 526 |
switch (pDimRgn->VCFResonanceController) { |
| 527 |
case ::gig::vcf_res_ctrl_genpurpose3: |
| 528 |
VCFResonanceCtrl.controller = 18; |
| 529 |
break; |
| 530 |
case ::gig::vcf_res_ctrl_genpurpose4: |
| 531 |
VCFResonanceCtrl.controller = 19; |
| 532 |
break; |
| 533 |
case ::gig::vcf_res_ctrl_genpurpose5: |
| 534 |
VCFResonanceCtrl.controller = 80; |
| 535 |
break; |
| 536 |
case ::gig::vcf_res_ctrl_genpurpose6: |
| 537 |
VCFResonanceCtrl.controller = 81; |
| 538 |
break; |
| 539 |
case ::gig::vcf_res_ctrl_none: |
| 540 |
default: |
| 541 |
VCFResonanceCtrl.controller = 0; |
| 542 |
} |
| 543 |
#endif // OVERRIDE_FILTER_RES_CTRL |
| 544 |
|
| 545 |
#ifndef OVERRIDE_FILTER_TYPE |
| 546 |
FilterLeft.SetType(pDimRgn->VCFType); |
| 547 |
FilterRight.SetType(pDimRgn->VCFType); |
| 548 |
#else // override filter type |
| 549 |
FilterLeft.SetType(OVERRIDE_FILTER_TYPE); |
| 550 |
FilterRight.SetType(OVERRIDE_FILTER_TYPE); |
| 551 |
#endif // OVERRIDE_FILTER_TYPE |
| 552 |
|
| 553 |
VCFCutoffCtrl.value = pEngine->ControllerTable[VCFCutoffCtrl.controller]; |
| 554 |
VCFResonanceCtrl.value = pEngine->ControllerTable[VCFResonanceCtrl.controller]; |
| 555 |
|
| 556 |
// calculate cutoff frequency |
| 557 |
float cutoff = (!VCFCutoffCtrl.controller) |
| 558 |
? exp((float) (127 - pNoteOnEvent->Velocity) * (float) pDimRgn->VCFVelocityScale * 6.2E-5f * FILTER_CUTOFF_COEFF) * FILTER_CUTOFF_MAX |
| 559 |
: exp((float) VCFCutoffCtrl.value * 0.00787402f * FILTER_CUTOFF_COEFF) * FILTER_CUTOFF_MAX; |
| 560 |
|
| 561 |
// calculate resonance |
| 562 |
float resonance = (float) VCFResonanceCtrl.value * 0.00787f; // 0.0..1.0 |
| 563 |
if (pDimRgn->VCFKeyboardTracking) { |
| 564 |
resonance += (float) (pNoteOnEvent->Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.00787f; |
| 565 |
} |
| 566 |
Constrain(resonance, 0.0, 1.0); // correct resonance if outside allowed value range (0.0..1.0) |
| 567 |
|
| 568 |
VCFCutoffCtrl.fvalue = cutoff - FILTER_CUTOFF_MIN; |
| 569 |
VCFResonanceCtrl.fvalue = resonance; |
| 570 |
|
| 571 |
FilterLeft.SetParameters(cutoff, resonance, pEngine->SampleRate); |
| 572 |
FilterRight.SetParameters(cutoff, resonance, pEngine->SampleRate); |
| 573 |
|
| 574 |
FilterUpdateCounter = -1; |
| 575 |
} |
| 576 |
else { |
| 577 |
VCFCutoffCtrl.controller = 0; |
| 578 |
VCFResonanceCtrl.controller = 0; |
| 579 |
} |
| 580 |
#endif // ENABLE_FILTER |
| 581 |
|
| 582 |
// ************************************************ |
| 583 |
// TODO: ARTICULATION DATA HANDLING IS MISSING HERE |
| 584 |
// ************************************************ |
| 585 |
|
| 586 |
return 0; // success |
| 587 |
} |
| 588 |
|
| 589 |
/** |
| 590 |
* Renders the audio data for this voice for the current audio fragment. |
| 591 |
* The sample input data can either come from RAM (cached sample or sample |
| 592 |
* part) or directly from disk. The output signal will be rendered by |
| 593 |
* resampling / interpolation. If this voice is a disk streaming voice and |
| 594 |
* the voice completely played back the cached RAM part of the sample, it |
| 595 |
* will automatically switch to disk playback for the next RenderAudio() |
| 596 |
* call. |
| 597 |
* |
| 598 |
* @param Samples - number of samples to be rendered in this audio fragment cycle |
| 599 |
*/ |
| 600 |
void Voice::Render(uint Samples) { |
| 601 |
|
| 602 |
// Reset the synthesis parameter matrix |
| 603 |
pEngine->ResetSynthesisParameters(Event::destination_vca, this->Volume * pEngine->GlobalVolume); |
| 604 |
pEngine->ResetSynthesisParameters(Event::destination_vco, this->PitchBase); |
| 605 |
#if ENABLE_FILTER |
| 606 |
pEngine->ResetSynthesisParameters(Event::destination_vcfc, VCFCutoffCtrl.fvalue); |
| 607 |
pEngine->ResetSynthesisParameters(Event::destination_vcfr, VCFResonanceCtrl.fvalue); |
| 608 |
#endif // ENABLE_FILTER |
| 609 |
|
| 610 |
|
| 611 |
// Apply events to the synthesis parameter matrix |
| 612 |
ProcessEvents(Samples); |
| 613 |
|
| 614 |
|
| 615 |
// Let all modulators write their parameter changes to the synthesis parameter matrix for the current audio fragment |
| 616 |
pEG1->Process(Samples, pEngine->pMIDIKeyInfo[MIDIKey].pEvents, pTriggerEvent, this->Pos, this->PitchBase * this->PitchBend); |
| 617 |
#if ENABLE_FILTER |
| 618 |
pEG2->Process(Samples, pEngine->pMIDIKeyInfo[MIDIKey].pEvents, pTriggerEvent, this->Pos, this->PitchBase * this->PitchBend); |
| 619 |
#endif // ENABLE_FILTER |
| 620 |
pEG3->Process(Samples); |
| 621 |
pLFO1->Process(Samples); |
| 622 |
#if ENABLE_FILTER |
| 623 |
pLFO2->Process(Samples); |
| 624 |
#endif // ENABLE_FILTER |
| 625 |
pLFO3->Process(Samples); |
| 626 |
|
| 627 |
|
| 628 |
#if ENABLE_FILTER |
| 629 |
CalculateBiquadParameters(Samples); // calculate the final biquad filter parameters |
| 630 |
#endif // ENABLE_FILTER |
| 631 |
|
| 632 |
|
| 633 |
switch (this->PlaybackState) { |
| 634 |
|
| 635 |
case playback_state_ram: { |
| 636 |
if (RAMLoop) InterpolateAndLoop(Samples, (sample_t*) pSample->GetCache().pStart, Delay); |
| 637 |
else Interpolate(Samples, (sample_t*) pSample->GetCache().pStart, Delay); |
| 638 |
if (DiskVoice) { |
| 639 |
// check if we reached the allowed limit of the sample RAM cache |
| 640 |
if (Pos > MaxRAMPos) { |
| 641 |
dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", Pos)); |
| 642 |
this->PlaybackState = playback_state_disk; |
| 643 |
} |
| 644 |
} |
| 645 |
else if (Pos >= pSample->GetCache().Size / pSample->FrameSize) { |
| 646 |
this->PlaybackState = playback_state_end; |
| 647 |
} |
| 648 |
} |
| 649 |
break; |
| 650 |
|
| 651 |
case playback_state_disk: { |
| 652 |
if (!DiskStreamRef.pStream) { |
| 653 |
// check if the disk thread created our ordered disk stream in the meantime |
| 654 |
DiskStreamRef.pStream = pDiskThread->AskForCreatedStream(DiskStreamRef.OrderID); |
| 655 |
if (!DiskStreamRef.pStream) { |
| 656 |
std::cout << stderr << "Disk stream not available in time!" << std::endl << std::flush; |
| 657 |
Kill(); |
| 658 |
return; |
| 659 |
} |
| 660 |
DiskStreamRef.pStream->IncrementReadPos(pSample->Channels * (RTMath::DoubleToInt(Pos) - MaxRAMPos)); |
| 661 |
Pos -= RTMath::DoubleToInt(Pos); |
| 662 |
} |
| 663 |
|
| 664 |
// add silence sample at the end if we reached the end of the stream (for the interpolator) |
| 665 |
if (DiskStreamRef.State == Stream::state_end && DiskStreamRef.pStream->GetReadSpace() < (pEngine->MaxSamplesPerCycle << MAX_PITCH) / pSample->Channels) { |
| 666 |
DiskStreamRef.pStream->WriteSilence((pEngine->MaxSamplesPerCycle << MAX_PITCH) / pSample->Channels); |
| 667 |
this->PlaybackState = playback_state_end; |
| 668 |
} |
| 669 |
|
| 670 |
sample_t* ptr = DiskStreamRef.pStream->GetReadPtr(); // get the current read_ptr within the ringbuffer where we read the samples from |
| 671 |
Interpolate(Samples, ptr, Delay); |
| 672 |
DiskStreamRef.pStream->IncrementReadPos(RTMath::DoubleToInt(Pos) * pSample->Channels); |
| 673 |
Pos -= RTMath::DoubleToInt(Pos); |
| 674 |
} |
| 675 |
break; |
| 676 |
|
| 677 |
case playback_state_end: |
| 678 |
Kill(); // free voice |
| 679 |
break; |
| 680 |
} |
| 681 |
|
| 682 |
|
| 683 |
#if ENABLE_FILTER |
| 684 |
// Reset synthesis event lists (except VCO, as VCO events apply channel wide currently) |
| 685 |
pEngine->pSynthesisEvents[Event::destination_vcfc]->clear(); |
| 686 |
pEngine->pSynthesisEvents[Event::destination_vcfr]->clear(); |
| 687 |
#endif // ENABLE_FILTER |
| 688 |
|
| 689 |
// Reset delay |
| 690 |
Delay = 0; |
| 691 |
|
| 692 |
pTriggerEvent = NULL; |
| 693 |
|
| 694 |
// If release stage finished, let the voice be killed |
| 695 |
if (pEG1->GetStage() == EGADSR::stage_end) this->PlaybackState = playback_state_end; |
| 696 |
} |
| 697 |
|
| 698 |
/** |
| 699 |
* Resets voice variables. Should only be called if rendering process is |
| 700 |
* suspended / not running. |
| 701 |
*/ |
| 702 |
void Voice::Reset() { |
| 703 |
pLFO1->Reset(); |
| 704 |
pLFO2->Reset(); |
| 705 |
pLFO3->Reset(); |
| 706 |
DiskStreamRef.pStream = NULL; |
| 707 |
DiskStreamRef.hStream = 0; |
| 708 |
DiskStreamRef.State = Stream::state_unused; |
| 709 |
DiskStreamRef.OrderID = 0; |
| 710 |
Active = false; |
| 711 |
} |
| 712 |
|
| 713 |
/** |
| 714 |
* Process the control change event lists of the engine for the current |
| 715 |
* audio fragment. Event values will be applied to the synthesis parameter |
| 716 |
* matrix. |
| 717 |
* |
| 718 |
* @param Samples - number of samples to be rendered in this audio fragment cycle |
| 719 |
*/ |
| 720 |
void Voice::ProcessEvents(uint Samples) { |
| 721 |
|
| 722 |
// dispatch control change events |
| 723 |
Event* pCCEvent = pEngine->pCCEvents->first(); |
| 724 |
if (Delay) { // skip events that happened before this voice was triggered |
| 725 |
while (pCCEvent && pCCEvent->FragmentPos() <= Delay) pCCEvent = pEngine->pCCEvents->next(); |
| 726 |
} |
| 727 |
while (pCCEvent) { |
| 728 |
if (pCCEvent->Controller) { // if valid MIDI controller |
| 729 |
#if ENABLE_FILTER |
| 730 |
if (pCCEvent->Controller == VCFCutoffCtrl.controller) { |
| 731 |
pEngine->pSynthesisEvents[Event::destination_vcfc]->alloc_assign(*pCCEvent); |
| 732 |
} |
| 733 |
if (pCCEvent->Controller == VCFResonanceCtrl.controller) { |
| 734 |
pEngine->pSynthesisEvents[Event::destination_vcfr]->alloc_assign(*pCCEvent); |
| 735 |
} |
| 736 |
#endif // ENABLE_FILTER |
| 737 |
if (pCCEvent->Controller == pLFO1->ExtController) { |
| 738 |
pLFO1->SendEvent(pCCEvent); |
| 739 |
} |
| 740 |
#if ENABLE_FILTER |
| 741 |
if (pCCEvent->Controller == pLFO2->ExtController) { |
| 742 |
pLFO2->SendEvent(pCCEvent); |
| 743 |
} |
| 744 |
#endif // ENABLE_FILTER |
| 745 |
if (pCCEvent->Controller == pLFO3->ExtController) { |
| 746 |
pLFO3->SendEvent(pCCEvent); |
| 747 |
} |
| 748 |
} |
| 749 |
|
| 750 |
pCCEvent = pEngine->pCCEvents->next(); |
| 751 |
} |
| 752 |
|
| 753 |
|
| 754 |
// process pitch events |
| 755 |
{ |
| 756 |
RTEList<Event>* pVCOEventList = pEngine->pSynthesisEvents[Event::destination_vco]; |
| 757 |
Event* pVCOEvent = pVCOEventList->first(); |
| 758 |
if (Delay) { // skip events that happened before this voice was triggered |
| 759 |
while (pVCOEvent && pVCOEvent->FragmentPos() <= Delay) pVCOEvent = pVCOEventList->next(); |
| 760 |
} |
| 761 |
// apply old pitchbend value until first pitch event occurs |
| 762 |
if (this->PitchBend != 1.0) { |
| 763 |
uint end = (pVCOEvent) ? pVCOEvent->FragmentPos() : Samples; |
| 764 |
for (uint i = Delay; i < end; i++) { |
| 765 |
pEngine->pSynthesisParameters[Event::destination_vco][i] *= this->PitchBend; |
| 766 |
} |
| 767 |
} |
| 768 |
float pitch; |
| 769 |
while (pVCOEvent) { |
| 770 |
Event* pNextVCOEvent = pVCOEventList->next(); |
| 771 |
|
| 772 |
// calculate the influence length of this event (in sample points) |
| 773 |
uint end = (pNextVCOEvent) ? pNextVCOEvent->FragmentPos() : Samples; |
| 774 |
|
| 775 |
pitch = RTMath::CentsToFreqRatio(((double) pVCOEvent->Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents |
| 776 |
|
| 777 |
// apply pitch value to the pitch parameter sequence |
| 778 |
for (uint i = pVCOEvent->FragmentPos(); i < end; i++) { |
| 779 |
pEngine->pSynthesisParameters[Event::destination_vco][i] *= pitch; |
| 780 |
} |
| 781 |
|
| 782 |
pVCOEvent = pNextVCOEvent; |
| 783 |
} |
| 784 |
if (pVCOEventList->last()) this->PitchBend = pitch; |
| 785 |
} |
| 786 |
|
| 787 |
|
| 788 |
#if ENABLE_FILTER |
| 789 |
// process filter cutoff events |
| 790 |
{ |
| 791 |
RTEList<Event>* pCutoffEventList = pEngine->pSynthesisEvents[Event::destination_vcfc]; |
| 792 |
Event* pCutoffEvent = pCutoffEventList->first(); |
| 793 |
if (Delay) { // skip events that happened before this voice was triggered |
| 794 |
while (pCutoffEvent && pCutoffEvent->FragmentPos() <= Delay) pCutoffEvent = pCutoffEventList->next(); |
| 795 |
} |
| 796 |
float cutoff; |
| 797 |
while (pCutoffEvent) { |
| 798 |
Event* pNextCutoffEvent = pCutoffEventList->next(); |
| 799 |
|
| 800 |
// calculate the influence length of this event (in sample points) |
| 801 |
uint end = (pNextCutoffEvent) ? pNextCutoffEvent->FragmentPos() : Samples; |
| 802 |
|
| 803 |
cutoff = exp((float) pCutoffEvent->Value * 0.00787402f * FILTER_CUTOFF_COEFF) * FILTER_CUTOFF_MAX - FILTER_CUTOFF_MIN; |
| 804 |
|
| 805 |
// apply cutoff frequency to the cutoff parameter sequence |
| 806 |
for (uint i = pCutoffEvent->FragmentPos(); i < end; i++) { |
| 807 |
pEngine->pSynthesisParameters[Event::destination_vcfc][i] = cutoff; |
| 808 |
} |
| 809 |
|
| 810 |
pCutoffEvent = pNextCutoffEvent; |
| 811 |
} |
| 812 |
if (pCutoffEventList->last()) VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of parameter matrix next time |
| 813 |
} |
| 814 |
|
| 815 |
// process filter resonance events |
| 816 |
{ |
| 817 |
RTEList<Event>* pResonanceEventList = pEngine->pSynthesisEvents[Event::destination_vcfr]; |
| 818 |
Event* pResonanceEvent = pResonanceEventList->first(); |
| 819 |
if (Delay) { // skip events that happened before this voice was triggered |
| 820 |
while (pResonanceEvent && pResonanceEvent->FragmentPos() <= Delay) pResonanceEvent = pResonanceEventList->next(); |
| 821 |
} |
| 822 |
while (pResonanceEvent) { |
| 823 |
Event* pNextResonanceEvent = pResonanceEventList->next(); |
| 824 |
|
| 825 |
// calculate the influence length of this event (in sample points) |
| 826 |
uint end = (pNextResonanceEvent) ? pNextResonanceEvent->FragmentPos() : Samples; |
| 827 |
|
| 828 |
// convert absolute controller value to differential |
| 829 |
int ctrldelta = pResonanceEvent->Value - VCFResonanceCtrl.value; |
| 830 |
VCFResonanceCtrl.value = pResonanceEvent->Value; |
| 831 |
|
| 832 |
float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0 |
| 833 |
|
| 834 |
// apply cutoff frequency to the cutoff parameter sequence |
| 835 |
for (uint i = pResonanceEvent->FragmentPos(); i < end; i++) { |
| 836 |
pEngine->pSynthesisParameters[Event::destination_vcfr][i] += resonancedelta; |
| 837 |
} |
| 838 |
|
| 839 |
pResonanceEvent = pNextResonanceEvent; |
| 840 |
} |
| 841 |
if (pResonanceEventList->last()) VCFResonanceCtrl.fvalue = pResonanceEventList->last()->Value * 0.00787f; // needed for initialization of parameter matrix next time |
| 842 |
} |
| 843 |
#endif // ENABLE_FILTER |
| 844 |
} |
| 845 |
|
| 846 |
#if ENABLE_FILTER |
| 847 |
/** |
| 848 |
* Calculate all necessary, final biquad filter parameters. |
| 849 |
* |
| 850 |
* @param Samples - number of samples to be rendered in this audio fragment cycle |
| 851 |
*/ |
| 852 |
void Voice::CalculateBiquadParameters(uint Samples) { |
| 853 |
if (!FilterLeft.Enabled) return; |
| 854 |
|
| 855 |
biquad_param_t bqbase; |
| 856 |
biquad_param_t bqmain; |
| 857 |
float prev_cutoff = pEngine->pSynthesisParameters[Event::destination_vcfc][0]; |
| 858 |
float prev_res = pEngine->pSynthesisParameters[Event::destination_vcfr][0]; |
| 859 |
FilterLeft.SetParameters(&bqbase, &bqmain, prev_cutoff, prev_res, pEngine->SampleRate); |
| 860 |
pEngine->pBasicFilterParameters[0] = bqbase; |
| 861 |
pEngine->pMainFilterParameters[0] = bqmain; |
| 862 |
|
| 863 |
float* bq; |
| 864 |
for (int i = 1; i < Samples; i++) { |
| 865 |
// recalculate biquad parameters if cutoff or resonance differ from previous sample point |
| 866 |
if (!(i & FILTER_UPDATE_MASK)) if (pEngine->pSynthesisParameters[Event::destination_vcfr][i] != prev_res || |
| 867 |
pEngine->pSynthesisParameters[Event::destination_vcfc][i] != prev_cutoff) { |
| 868 |
prev_cutoff = pEngine->pSynthesisParameters[Event::destination_vcfc][i]; |
| 869 |
prev_res = pEngine->pSynthesisParameters[Event::destination_vcfr][i]; |
| 870 |
FilterLeft.SetParameters(&bqbase, &bqmain, prev_cutoff, prev_res, pEngine->SampleRate); |
| 871 |
} |
| 872 |
|
| 873 |
//same as 'pEngine->pBasicFilterParameters[i] = bqbase;' |
| 874 |
bq = (float*) &pEngine->pBasicFilterParameters[i]; |
| 875 |
bq[0] = bqbase.a1; |
| 876 |
bq[1] = bqbase.a2; |
| 877 |
bq[2] = bqbase.b0; |
| 878 |
bq[3] = bqbase.b1; |
| 879 |
bq[4] = bqbase.b2; |
| 880 |
|
| 881 |
// same as 'pEngine->pMainFilterParameters[i] = bqmain;' |
| 882 |
bq = (float*) &pEngine->pMainFilterParameters[i]; |
| 883 |
bq[0] = bqmain.a1; |
| 884 |
bq[1] = bqmain.a2; |
| 885 |
bq[2] = bqmain.b0; |
| 886 |
bq[3] = bqmain.b1; |
| 887 |
bq[4] = bqmain.b2; |
| 888 |
} |
| 889 |
} |
| 890 |
#endif // ENABLE_FILTER |
| 891 |
|
| 892 |
/** |
| 893 |
* Interpolates the input audio data (no loop). |
| 894 |
* |
| 895 |
* @param Samples - number of sample points to be rendered in this audio |
| 896 |
* fragment cycle |
| 897 |
* @param pSrc - pointer to input sample data |
| 898 |
* @param Skip - number of sample points to skip in output buffer |
| 899 |
*/ |
| 900 |
void Voice::Interpolate(uint Samples, sample_t* pSrc, uint Skip) { |
| 901 |
int i = Skip; |
| 902 |
|
| 903 |
// FIXME: assuming either mono or stereo |
| 904 |
if (this->pSample->Channels == 2) { // Stereo Sample |
| 905 |
while (i < Samples) { |
| 906 |
InterpolateOneStep_Stereo(pSrc, i, |
| 907 |
pEngine->pSynthesisParameters[Event::destination_vca][i], |
| 908 |
pEngine->pSynthesisParameters[Event::destination_vco][i], |
| 909 |
pEngine->pBasicFilterParameters[i], |
| 910 |
pEngine->pMainFilterParameters[i]); |
| 911 |
} |
| 912 |
} |
| 913 |
else { // Mono Sample |
| 914 |
while (i < Samples) { |
| 915 |
InterpolateOneStep_Mono(pSrc, i, |
| 916 |
pEngine->pSynthesisParameters[Event::destination_vca][i], |
| 917 |
pEngine->pSynthesisParameters[Event::destination_vco][i], |
| 918 |
pEngine->pBasicFilterParameters[i], |
| 919 |
pEngine->pMainFilterParameters[i]); |
| 920 |
} |
| 921 |
} |
| 922 |
} |
| 923 |
|
| 924 |
/** |
| 925 |
* Interpolates the input audio data, this method honors looping. |
| 926 |
* |
| 927 |
* @param Samples - number of sample points to be rendered in this audio |
| 928 |
* fragment cycle |
| 929 |
* @param pSrc - pointer to input sample data |
| 930 |
* @param Skip - number of sample points to skip in output buffer |
| 931 |
*/ |
| 932 |
void Voice::InterpolateAndLoop(uint Samples, sample_t* pSrc, uint Skip) { |
| 933 |
int i = Skip; |
| 934 |
|
| 935 |
// FIXME: assuming either mono or stereo |
| 936 |
if (pSample->Channels == 2) { // Stereo Sample |
| 937 |
if (pSample->LoopPlayCount) { |
| 938 |
// render loop (loop count limited) |
| 939 |
while (i < Samples && LoopCyclesLeft) { |
| 940 |
InterpolateOneStep_Stereo(pSrc, i, |
| 941 |
pEngine->pSynthesisParameters[Event::destination_vca][i], |
| 942 |
pEngine->pSynthesisParameters[Event::destination_vco][i], |
| 943 |
pEngine->pBasicFilterParameters[i], |
| 944 |
pEngine->pMainFilterParameters[i]); |
| 945 |
if (Pos > pSample->LoopEnd) { |
| 946 |
Pos = pSample->LoopStart + fmod(Pos - pSample->LoopEnd, pSample->LoopSize);; |
| 947 |
LoopCyclesLeft--; |
| 948 |
} |
| 949 |
} |
| 950 |
// render on without loop |
| 951 |
while (i < Samples) { |
| 952 |
InterpolateOneStep_Stereo(pSrc, i, |
| 953 |
pEngine->pSynthesisParameters[Event::destination_vca][i], |
| 954 |
pEngine->pSynthesisParameters[Event::destination_vco][i], |
| 955 |
pEngine->pBasicFilterParameters[i], |
| 956 |
pEngine->pMainFilterParameters[i]); |
| 957 |
} |
| 958 |
} |
| 959 |
else { // render loop (endless loop) |
| 960 |
while (i < Samples) { |
| 961 |
InterpolateOneStep_Stereo(pSrc, i, |
| 962 |
pEngine->pSynthesisParameters[Event::destination_vca][i], |
| 963 |
pEngine->pSynthesisParameters[Event::destination_vco][i], |
| 964 |
pEngine->pBasicFilterParameters[i], |
| 965 |
pEngine->pMainFilterParameters[i]); |
| 966 |
if (Pos > pSample->LoopEnd) { |
| 967 |
Pos = pSample->LoopStart + fmod(Pos - pSample->LoopEnd, pSample->LoopSize); |
| 968 |
} |
| 969 |
} |
| 970 |
} |
| 971 |
} |
| 972 |
else { // Mono Sample |
| 973 |
if (pSample->LoopPlayCount) { |
| 974 |
// render loop (loop count limited) |
| 975 |
while (i < Samples && LoopCyclesLeft) { |
| 976 |
InterpolateOneStep_Mono(pSrc, i, |
| 977 |
pEngine->pSynthesisParameters[Event::destination_vca][i], |
| 978 |
pEngine->pSynthesisParameters[Event::destination_vco][i], |
| 979 |
pEngine->pBasicFilterParameters[i], |
| 980 |
pEngine->pMainFilterParameters[i]); |
| 981 |
if (Pos > pSample->LoopEnd) { |
| 982 |
Pos = pSample->LoopStart + fmod(Pos - pSample->LoopEnd, pSample->LoopSize);; |
| 983 |
LoopCyclesLeft--; |
| 984 |
} |
| 985 |
} |
| 986 |
// render on without loop |
| 987 |
while (i < Samples) { |
| 988 |
InterpolateOneStep_Mono(pSrc, i, |
| 989 |
pEngine->pSynthesisParameters[Event::destination_vca][i], |
| 990 |
pEngine->pSynthesisParameters[Event::destination_vco][i], |
| 991 |
pEngine->pBasicFilterParameters[i], |
| 992 |
pEngine->pMainFilterParameters[i]); |
| 993 |
} |
| 994 |
} |
| 995 |
else { // render loop (endless loop) |
| 996 |
while (i < Samples) { |
| 997 |
InterpolateOneStep_Mono(pSrc, i, |
| 998 |
pEngine->pSynthesisParameters[Event::destination_vca][i], |
| 999 |
pEngine->pSynthesisParameters[Event::destination_vco][i], |
| 1000 |
pEngine->pBasicFilterParameters[i], |
| 1001 |
pEngine->pMainFilterParameters[i]); |
| 1002 |
if (Pos > pSample->LoopEnd) { |
| 1003 |
Pos = pSample->LoopStart + fmod(Pos - pSample->LoopEnd, pSample->LoopSize);; |
| 1004 |
} |
| 1005 |
} |
| 1006 |
} |
| 1007 |
} |
| 1008 |
} |
| 1009 |
|
| 1010 |
/** |
| 1011 |
* Immediately kill the voice. |
| 1012 |
*/ |
| 1013 |
void Voice::Kill() { |
| 1014 |
if (DiskVoice && DiskStreamRef.State != Stream::state_unused) { |
| 1015 |
pDiskThread->OrderDeletionOfStream(&DiskStreamRef); |
| 1016 |
} |
| 1017 |
Reset(); |
| 1018 |
} |
| 1019 |
|
| 1020 |
}} // namespace LinuxSampler::gig |
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