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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) 2005-2009 Christian Schoenebeck * |
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* Copyright (C) 2009-2012 Grigor Iliev * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This program is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this program; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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#include "Engine.h" |
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#include "EngineChannel.h" |
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namespace LinuxSampler { namespace sfz { |
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Engine::Format Engine::GetEngineFormat() { return SFZ; } |
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Engine::Engine() { |
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pCCPool = new Pool<CCSignalUnit::CC>(GLOBAL_MAX_VOICES * MaxCCPerVoice); |
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pSmootherPool = new Pool<Smoother>(GLOBAL_MAX_VOICES * MaxCCPerVoice); |
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for (VoiceIterator iterVoice = GetVoicePool()->allocAppend(); iterVoice == GetVoicePool()->last(); iterVoice = GetVoicePool()->allocAppend()) { |
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(static_cast<SfzSignalUnitRack*>(iterVoice->pSignalUnitRack))->InitRTLists(); |
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} |
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GetVoicePool()->clear(); |
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} |
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Engine::~Engine() { |
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if (pCCPool) { |
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pCCPool->clear(); |
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delete pCCPool; |
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} |
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if (pSmootherPool) { |
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pSmootherPool->clear(); |
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delete pSmootherPool; |
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} |
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} |
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void Engine::PostSetMaxVoices(int iVoices) { |
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pCCPool->resizePool(iVoices * MaxCCPerVoice); |
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pSmootherPool->resizePool(iVoices * MaxCCPerVoice); |
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for (VoiceIterator iterVoice = GetVoicePool()->allocAppend(); iterVoice == GetVoicePool()->last(); iterVoice = GetVoicePool()->allocAppend()) { |
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(static_cast<SfzSignalUnitRack*>(iterVoice->pSignalUnitRack))->InitRTLists(); |
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} |
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GetVoicePool()->clear(); |
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} |
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/** |
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* Reacts on supported control change commands (e.g. pitch bend wheel, |
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* modulation wheel, aftertouch). |
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* |
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* @param pEngineChannel - engine channel on which this event occured on |
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* @param itControlChangeEvent - controller, value and time stamp of the event |
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*/ |
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void Engine::ProcessControlChange ( |
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LinuxSampler::EngineChannel* pEngineChannel, |
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Pool<Event>::Iterator& itControlChangeEvent |
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) { |
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uint8_t cc = itControlChangeEvent->Param.CC.Controller; |
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dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", cc, itControlChangeEvent->Param.CC.Value)); |
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EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel); |
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// update controller value in the engine channel's controller table |
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pChannel->ControllerTable[cc] = itControlChangeEvent->Param.CC.Value; |
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ProcessHardcodedControllers(pEngineChannel, itControlChangeEvent); |
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// handle FX send controllers |
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ProcessFxSendControllers(pChannel, itControlChangeEvent); |
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// handle control triggered regions: a control change event |
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// can trigger a new voice |
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if (pChannel->pInstrument && cc < 128) { |
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::sfz::Query q; |
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q.chan = itControlChangeEvent->Param.CC.Channel + 1; |
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q.key = 60; |
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q.vel = 127; |
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q.bend = pChannel->Pitch; |
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q.bpm = 0; |
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q.chanaft = pChannel->ControllerTable[128]; |
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q.polyaft = 0; |
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q.prog = 0; |
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q.rand = Random(); |
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q.cc = pChannel->ControllerTable; |
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q.timer = 0; |
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q.sw = pChannel->PressedKeys; |
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q.last_sw_key = pChannel->LastKeySwitch; |
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q.prev_sw_key = pChannel->LastKey; |
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q.trig = TRIGGER_ATTACK | TRIGGER_FIRST; |
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q.search(pChannel->pInstrument, cc); |
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int i = 0; |
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while (::sfz::Region* region = q.next()) { |
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if (!RegionSuspended(region)) { |
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itControlChangeEvent->Param.Note.Key = 60; |
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itControlChangeEvent->Param.Note.Velocity = 127; |
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itControlChangeEvent->Param.Note.pRegion = region; |
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LaunchVoice(pChannel, itControlChangeEvent, i, false, false, true); |
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} |
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i++; |
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} |
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} |
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} |
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void Engine::ProcessChannelPressure(LinuxSampler::EngineChannel* pEngineChannel, Pool<Event>::Iterator& itChannelPressureEvent) { |
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// if required: engine global aftertouch handling (apart from the per voice handling) |
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} |
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void Engine::ProcessPolyphonicKeyPressure(LinuxSampler::EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNotePressureEvent) { |
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// if required: engine global aftertouch handling (apart from the per voice handling) |
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} |
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DiskThread* Engine::CreateDiskThread() { |
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return new DiskThread ( |
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iMaxDiskStreams, |
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((pAudioOutputDevice->MaxSamplesPerCycle() << CONFIG_MAX_PITCH) << 1) + 6, //FIXME: assuming stereo |
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&instruments |
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); |
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} |
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void Engine::TriggerNewVoices ( |
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LinuxSampler::EngineChannel* pEngineChannel, |
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RTList<Event>::Iterator& itNoteOnEvent, |
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bool HandleKeyGroupConflicts |
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) { |
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EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel); |
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::sfz::Query q; |
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q.chan = itNoteOnEvent->Param.Note.Channel + 1; |
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q.key = itNoteOnEvent->Param.Note.Key; |
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q.vel = itNoteOnEvent->Param.Note.Velocity; |
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q.bend = pChannel->Pitch; |
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q.bpm = 0; |
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q.chanaft = pChannel->ControllerTable[128]; |
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q.polyaft = 0; |
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q.prog = 0; |
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q.rand = Random(); |
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q.cc = pChannel->ControllerTable; |
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q.timer = 0; |
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q.sw = pChannel->PressedKeys; |
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q.last_sw_key = pChannel->LastKeySwitch; |
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q.prev_sw_key = pChannel->LastKey; |
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q.trig = TRIGGER_ATTACK | |
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((pChannel->LastKey != -1 && |
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pChannel->PressedKeys[pChannel->LastKey] && |
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pChannel->LastKey != q.key) ? |
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TRIGGER_LEGATO : TRIGGER_FIRST); |
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q.search(pChannel->pInstrument); |
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int i = 0; |
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while (::sfz::Region* region = q.next()) { |
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if (!RegionSuspended(region)) { |
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itNoteOnEvent->Param.Note.pRegion = region; |
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LaunchVoice(pChannel, itNoteOnEvent, i, false, true, HandleKeyGroupConflicts); |
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} |
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i++; |
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} |
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} |
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void Engine::TriggerReleaseVoices ( |
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LinuxSampler::EngineChannel* pEngineChannel, |
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RTList<Event>::Iterator& itNoteOffEvent |
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) { |
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EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel); |
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::sfz::Query q; |
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q.chan = itNoteOffEvent->Param.Note.Channel + 1; |
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q.key = itNoteOffEvent->Param.Note.Key; |
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// MIDI note-on velocity is used instead of note-off velocity |
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q.vel = pChannel->pMIDIKeyInfo[q.key].Velocity; |
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itNoteOffEvent->Param.Note.Velocity = q.vel; |
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q.bend = pChannel->Pitch; |
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q.bpm = 0; |
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q.chanaft = pChannel->ControllerTable[128]; |
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q.polyaft = 0; |
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q.prog = 0; |
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q.rand = Random(); |
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q.cc = pChannel->ControllerTable; |
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q.timer = 0; |
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q.sw = pChannel->PressedKeys; |
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q.last_sw_key = pChannel->LastKeySwitch; |
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q.prev_sw_key = pChannel->LastKey; |
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q.trig = TRIGGER_RELEASE; |
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q.search(pChannel->pInstrument); |
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// now launch the required amount of voices |
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int i = 0; |
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while (::sfz::Region* region = q.next()) { |
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itNoteOffEvent->Param.Note.pRegion = region; |
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LaunchVoice(pChannel, itNoteOffEvent, i, true, false, true); //FIXME: for the moment we don't perform voice stealing for release triggered samples |
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i++; |
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} |
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} |
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Pool<Voice>::Iterator Engine::LaunchVoice ( |
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LinuxSampler::EngineChannel* pEngineChannel, |
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Pool<Event>::Iterator& itNoteOnEvent, |
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int iLayer, |
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bool ReleaseTriggerVoice, |
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bool VoiceStealing, |
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bool HandleKeyGroupConflicts |
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) { |
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EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel); |
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int key = itNoteOnEvent->Param.Note.Key; |
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EngineChannel::MidiKey* pKey = &pChannel->pMIDIKeyInfo[key]; |
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::sfz::Region* pRgn = static_cast< ::sfz::Region*>(itNoteOnEvent->Param.Note.pRegion); |
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Voice::type_t VoiceType = |
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itNoteOnEvent->Type == Event::type_control_change ? Voice::type_controller_triggered : |
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ReleaseTriggerVoice ? Voice::type_release_trigger : |
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iLayer == 0 ? Voice::type_release_trigger_required : |
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Voice::type_normal; |
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if (pRgn->loop_mode == ::sfz::ONE_SHOT) VoiceType |= Voice::type_one_shot; |
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Pool<Voice>::Iterator itNewVoice; |
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if (HandleKeyGroupConflicts) pChannel->HandleKeyGroupConflicts(pRgn->group, itNoteOnEvent); |
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// no need to process if sample is silent |
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if (!pRgn->GetSample(false) || !pRgn->GetSample()->GetTotalFrameCount()) return Pool<Voice>::Iterator(); |
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// allocate a new voice for the key |
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itNewVoice = pKey->pActiveVoices->allocAppend(); |
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int res = InitNewVoice ( |
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pChannel, pRgn, itNoteOnEvent, VoiceType, iLayer, |
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pRgn->off_by, ReleaseTriggerVoice, VoiceStealing, itNewVoice |
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); |
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if (!res) return itNewVoice; |
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// return if this is a release triggered voice and there is no |
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// releasetrigger dimension (could happen if an instrument |
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// change has occured between note on and off) |
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//if (ReleaseTriggerVoice && VoiceType != Voice::type_release_trigger) return Pool<Voice>::Iterator(); |
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return Pool<Voice>::Iterator(); // no free voice or error |
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} |
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bool Engine::DiskStreamSupported() { |
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return true; |
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} |
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String Engine::Description() { |
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return "SFZ Format Engine"; |
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} |
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String Engine::Version() { |
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String s = "$Revision$"; |
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return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
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} |
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}} // namespace LinuxSampler::sfz |