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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 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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|
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namespace LinuxSampler { namespace gig { |
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Engine::Format Engine::GetEngineFormat() { return GIG; } |
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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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dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value)); |
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|
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EngineChannel* pChannel = dynamic_cast<EngineChannel*>(pEngineChannel); |
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// handle the "control triggered" MIDI rule: a control change |
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// event can trigger a new note on or note off event |
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if (pChannel->pInstrument) { |
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|
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::gig::MidiRule* rule; |
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for (int i = 0 ; (rule = pChannel->pInstrument->GetMidiRule(i)) ; i++) { |
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|
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if (::gig::MidiRuleCtrlTrigger* ctrlTrigger = |
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dynamic_cast< ::gig::MidiRuleCtrlTrigger*>(rule)) { |
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if (itControlChangeEvent->Param.CC.Controller == |
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ctrlTrigger->ControllerNumber) { |
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|
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uint8_t oldCCValue = pChannel->ControllerTable[ |
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itControlChangeEvent->Param.CC.Controller]; |
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uint8_t newCCValue = itControlChangeEvent->Param.CC.Value; |
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|
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for (int i = 0 ; i < ctrlTrigger->Triggers ; i++) { |
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::gig::MidiRuleCtrlTrigger::trigger_t* pTrigger = |
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&ctrlTrigger->pTriggers[i]; |
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|
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// check if the controller has passed the |
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// trigger point in the right direction |
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if ((pTrigger->Descending && |
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oldCCValue > pTrigger->TriggerPoint && |
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newCCValue <= pTrigger->TriggerPoint) || |
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(!pTrigger->Descending && |
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oldCCValue < pTrigger->TriggerPoint && |
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newCCValue >= pTrigger->TriggerPoint)) { |
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|
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RTList<Event>::Iterator itNewEvent = pGlobalEvents->allocAppend(); |
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if (itNewEvent) { |
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*itNewEvent = *itControlChangeEvent; |
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itNewEvent->Param.Note.Key = pTrigger->Key; |
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|
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if (pTrigger->NoteOff || pTrigger->Velocity == 0) { |
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itNewEvent->Type = Event::type_note_off; |
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itNewEvent->Param.Note.Velocity = 100; |
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|
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ProcessNoteOff(pEngineChannel, itNewEvent); |
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} else { |
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itNewEvent->Type = Event::type_note_on; |
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//TODO: if Velocity is 255, the triggered velocity should |
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// depend on how fast the controller is moving |
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itNewEvent->Param.Note.Velocity = |
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pTrigger->Velocity == 255 ? 100 : |
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pTrigger->Velocity; |
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|
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ProcessNoteOn(pEngineChannel, itNewEvent); |
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} |
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} |
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else dmsg(1,("Event pool emtpy!\n")); |
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} |
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} |
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} |
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} |
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} |
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} |
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// update controller value in the engine channel's controller table |
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pChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value; |
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|
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ProcessHardcodedControllers(pEngineChannel, itControlChangeEvent); |
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|
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// handle FX send controllers |
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ProcessFxSendControllers(pChannel, itControlChangeEvent); |
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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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// first, get total amount of required voices (dependant on amount of layers) |
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::gig::Region* pRegion = pChannel->pInstrument->GetRegion(itNoteOnEvent->Param.Note.Key); |
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if (pRegion && !RegionSuspended(pRegion)) { |
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int voicesRequired = pRegion->Layers; |
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// now launch the required amount of voices |
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for (int i = 0; i < voicesRequired; i++) |
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LaunchVoice(pChannel, itNoteOnEvent, i, false, true, HandleKeyGroupConflicts); |
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} |
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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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MidiKey* pKey = &pChannel->pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key]; |
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// first, get total amount of required voices (dependant on amount of layers) |
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::gig::Region* pRegion = pChannel->pInstrument->GetRegion(itNoteOffEvent->Param.Note.Key); |
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if (pRegion) { |
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int voicesRequired = pRegion->Layers; |
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|
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// MIDI note-on velocity is used instead of note-off velocity |
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itNoteOffEvent->Param.Note.Velocity = pKey->Velocity; |
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|
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// now launch the required amount of voices |
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for (int i = 0; i < voicesRequired; i++) |
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LaunchVoice(pChannel, itNoteOffEvent, i, true, false, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples |
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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 MIDIKey = itNoteOnEvent->Param.Note.Key; |
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EngineChannel::MidiKey* pKey = &pChannel->pMIDIKeyInfo[MIDIKey]; |
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::gig::Region* pRegion = pChannel->pInstrument->GetRegion(MIDIKey); |
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// if nothing defined for this key |
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if (!pRegion) return Pool<Voice>::Iterator(); // nothing to do |
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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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int iKeyGroup = (iLayer == 0 && !ReleaseTriggerVoice) ? pRegion->KeyGroup : 0; |
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// handle key group (a.k.a. exclusive group) conflicts |
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if (HandleKeyGroupConflicts) { |
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if (iKeyGroup) { // if this voice / key belongs to a key group |
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uint** ppKeyGroup = &pChannel->ActiveKeyGroups[iKeyGroup]; |
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if (*ppKeyGroup) { // if there's already an active key in that key group |
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EngineChannel::MidiKey* pOtherKey = &pChannel->pMIDIKeyInfo[**ppKeyGroup]; |
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// kill all voices on the (other) key |
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RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first(); |
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RTList<Voice>::Iterator end = pOtherKey->pActiveVoices->end(); |
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for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) { |
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if (itVoiceToBeKilled->Type != Voice::type_release_trigger) { |
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itVoiceToBeKilled->Kill(itNoteOnEvent); |
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--VoiceSpawnsLeft; //FIXME: just a hack, we should better check in StealVoice() if the voice was killed due to key conflict |
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} |
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} |
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} |
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} |
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} |
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Voice::type_t VoiceType = Voice::type_normal; |
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// get current dimension values to select the right dimension region |
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//TODO: for stolen voices this dimension region selection block is processed twice, this should be changed |
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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] = pChannel->ControllerTable[128]; |
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break; |
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case ::gig::dimension_releasetrigger: |
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VoiceType = (ReleaseTriggerVoice) ? Voice::type_release_trigger : (!iLayer) ? Voice::type_release_trigger_required : Voice::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) (pChannel->CurrentKeyDimension * pRegion->pDimensionDefinitions[i].zones); |
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break; |
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case ::gig::dimension_roundrobin: |
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DimValues[i] = (uint) pChannel->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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RandomSeed = RandomSeed * 1103515245 + 12345; // classic pseudo random number generator |
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DimValues[i] = (uint) RandomSeed >> (32 - pRegion->pDimensionDefinitions[i].bits); // highest bits are most random |
228 |
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break; |
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case ::gig::dimension_modwheel: |
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DimValues[i] = pChannel->ControllerTable[1]; |
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break; |
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case ::gig::dimension_breath: |
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DimValues[i] = pChannel->ControllerTable[2]; |
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break; |
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case ::gig::dimension_foot: |
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DimValues[i] = pChannel->ControllerTable[4]; |
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break; |
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case ::gig::dimension_portamentotime: |
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DimValues[i] = pChannel->ControllerTable[5]; |
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break; |
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case ::gig::dimension_effect1: |
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DimValues[i] = pChannel->ControllerTable[12]; |
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break; |
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case ::gig::dimension_effect2: |
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DimValues[i] = pChannel->ControllerTable[13]; |
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break; |
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case ::gig::dimension_genpurpose1: |
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DimValues[i] = pChannel->ControllerTable[16]; |
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break; |
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case ::gig::dimension_genpurpose2: |
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DimValues[i] = pChannel->ControllerTable[17]; |
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break; |
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case ::gig::dimension_genpurpose3: |
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DimValues[i] = pChannel->ControllerTable[18]; |
255 |
schoenebeck |
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break; |
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case ::gig::dimension_genpurpose4: |
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DimValues[i] = pChannel->ControllerTable[19]; |
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break; |
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case ::gig::dimension_sustainpedal: |
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DimValues[i] = pChannel->ControllerTable[64]; |
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break; |
262 |
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case ::gig::dimension_portamento: |
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DimValues[i] = pChannel->ControllerTable[65]; |
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schoenebeck |
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break; |
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case ::gig::dimension_sostenutopedal: |
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DimValues[i] = pChannel->ControllerTable[66]; |
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schoenebeck |
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break; |
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case ::gig::dimension_softpedal: |
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DimValues[i] = pChannel->ControllerTable[67]; |
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schoenebeck |
669 |
break; |
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case ::gig::dimension_genpurpose5: |
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DimValues[i] = pChannel->ControllerTable[80]; |
273 |
schoenebeck |
669 |
break; |
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case ::gig::dimension_genpurpose6: |
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DimValues[i] = pChannel->ControllerTable[81]; |
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schoenebeck |
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break; |
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case ::gig::dimension_genpurpose7: |
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DimValues[i] = pChannel->ControllerTable[82]; |
279 |
schoenebeck |
669 |
break; |
280 |
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case ::gig::dimension_genpurpose8: |
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DimValues[i] = pChannel->ControllerTable[83]; |
282 |
schoenebeck |
669 |
break; |
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case ::gig::dimension_effect1depth: |
284 |
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DimValues[i] = pChannel->ControllerTable[91]; |
285 |
schoenebeck |
669 |
break; |
286 |
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case ::gig::dimension_effect2depth: |
287 |
iliev |
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DimValues[i] = pChannel->ControllerTable[92]; |
288 |
schoenebeck |
669 |
break; |
289 |
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case ::gig::dimension_effect3depth: |
290 |
iliev |
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DimValues[i] = pChannel->ControllerTable[93]; |
291 |
schoenebeck |
669 |
break; |
292 |
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case ::gig::dimension_effect4depth: |
293 |
iliev |
2012 |
DimValues[i] = pChannel->ControllerTable[94]; |
294 |
schoenebeck |
669 |
break; |
295 |
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case ::gig::dimension_effect5depth: |
296 |
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2012 |
DimValues[i] = pChannel->ControllerTable[95]; |
297 |
schoenebeck |
669 |
break; |
298 |
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case ::gig::dimension_none: |
299 |
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std::cerr << "gig::Engine::LaunchVoice() Error: dimension=none\n" << std::flush; |
300 |
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break; |
301 |
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default: |
302 |
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std::cerr << "gig::Engine::LaunchVoice() Error: Unknown dimension\n" << std::flush; |
303 |
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} |
304 |
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} |
305 |
persson |
1038 |
|
306 |
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// return if this is a release triggered voice and there is no |
307 |
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// releasetrigger dimension (could happen if an instrument |
308 |
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// change has occured between note on and off) |
309 |
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if (ReleaseTriggerVoice && VoiceType != Voice::type_release_trigger) return Pool<Voice>::Iterator(); |
310 |
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|
311 |
schoenebeck |
669 |
::gig::DimensionRegion* pDimRgn = pRegion->GetDimensionRegionByValue(DimValues); |
312 |
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|
313 |
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// no need to continue if sample is silent |
314 |
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if (!pDimRgn->pSample || !pDimRgn->pSample->SamplesTotal) return Pool<Voice>::Iterator(); |
315 |
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|
316 |
schoenebeck |
233 |
// allocate a new voice for the key |
317 |
schoenebeck |
271 |
Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend(); |
318 |
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if (itNewVoice) { |
319 |
schoenebeck |
233 |
// launch the new voice |
320 |
iliev |
2012 |
if (itNewVoice->Trigger(pChannel, itNoteOnEvent, pChannel->Pitch, pDimRgn, VoiceType, iKeyGroup) < 0) { |
321 |
schoenebeck |
354 |
dmsg(4,("Voice not triggered\n")); |
322 |
schoenebeck |
271 |
pKey->pActiveVoices->free(itNewVoice); |
323 |
schoenebeck |
233 |
} |
324 |
schoenebeck |
239 |
else { // on success |
325 |
schoenebeck |
663 |
--VoiceSpawnsLeft; |
326 |
schoenebeck |
239 |
if (!pKey->Active) { // mark as active key |
327 |
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pKey->Active = true; |
328 |
iliev |
2012 |
pKey->itSelf = pChannel->pActiveKeys->allocAppend(); |
329 |
schoenebeck |
271 |
*pKey->itSelf = itNoteOnEvent->Param.Note.Key; |
330 |
schoenebeck |
239 |
} |
331 |
schoenebeck |
271 |
if (itNewVoice->KeyGroup) { |
332 |
iliev |
2012 |
uint** ppKeyGroup = &pChannel->ActiveKeyGroups[itNewVoice->KeyGroup]; |
333 |
schoenebeck |
271 |
*ppKeyGroup = &*pKey->itSelf; // put key as the (new) active key to its key group |
334 |
schoenebeck |
239 |
} |
335 |
schoenebeck |
271 |
if (itNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s) |
336 |
|
|
return itNewVoice; // success |
337 |
schoenebeck |
233 |
} |
338 |
|
|
} |
339 |
schoenebeck |
285 |
else if (VoiceStealing) { |
340 |
schoenebeck |
460 |
// try to steal one voice |
341 |
iliev |
2012 |
int result = StealVoice(pChannel, itNoteOnEvent); |
342 |
schoenebeck |
473 |
if (!result) { // voice stolen successfully |
343 |
|
|
// put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died |
344 |
|
|
RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend(); |
345 |
|
|
if (itStealEvent) { |
346 |
|
|
*itStealEvent = *itNoteOnEvent; // copy event |
347 |
|
|
itStealEvent->Param.Note.Layer = iLayer; |
348 |
|
|
itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice; |
349 |
|
|
pKey->VoiceTheftsQueued++; |
350 |
|
|
} |
351 |
|
|
else dmsg(1,("Voice stealing queue full!\n")); |
352 |
schoenebeck |
285 |
} |
353 |
|
|
} |
354 |
|
|
|
355 |
schoenebeck |
271 |
return Pool<Voice>::Iterator(); // no free voice or error |
356 |
schoenebeck |
233 |
} |
357 |
|
|
|
358 |
schoenebeck |
53 |
bool Engine::DiskStreamSupported() { |
359 |
|
|
return true; |
360 |
|
|
} |
361 |
|
|
|
362 |
|
|
String Engine::Description() { |
363 |
iliev |
2012 |
return "GigaSampler Format Engine"; |
364 |
schoenebeck |
53 |
} |
365 |
|
|
|
366 |
|
|
String Engine::Version() { |
367 |
iliev |
2012 |
String s = "$Revision: 1.105 $"; |
368 |
schoenebeck |
123 |
return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
369 |
schoenebeck |
53 |
} |
370 |
|
|
|
371 |
|
|
}} // namespace LinuxSampler::gig |