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iliev |
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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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namespace LinuxSampler { namespace sfz { |
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Engine::Format Engine::GetEngineFormat() { return SFZ; } |
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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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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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// TODO: |
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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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ProcessHardcodedControllers(pEngineChannel, itControlChangeEvent); |
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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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uint8_t chan = pChannel->MidiChannel(); |
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int key = itNoteOnEvent->Param.Note.Key; |
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uint8_t vel = itNoteOnEvent->Param.Note.Velocity; |
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int bend = pChannel->Pitch; |
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uint8_t chanaft = pChannel->ControllerTable[128]; |
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uint8_t* cc = pChannel->ControllerTable; |
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::sfz::trigger_t trig = TRIGGER_ATTACK | |
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((pChannel->LastKey != -1 && |
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pChannel->PressedKeys[pChannel->LastKey] && |
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pChannel->LastKey != key) ? |
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TRIGGER_LEGATO : TRIGGER_FIRST); |
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pChannel->regionsTemp = pChannel->pInstrument->GetRegionsOnKey ( |
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chan, key, vel, bend, 0, chanaft, 0, 0, 0, trig, cc, |
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0.0f, 1, pChannel->PressedKeys, pChannel->LastKeySwitch, pChannel->LastKey |
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); |
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for (int i = 0; i < pChannel->regionsTemp.size(); i++) { |
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if (!RegionSuspended(pChannel->regionsTemp[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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uint8_t chan = pChannel->MidiChannel(); |
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int key = itNoteOffEvent->Param.Note.Key; |
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persson |
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// MIDI note-on velocity is used instead of note-off velocity |
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uint8_t vel = pChannel->pMIDIKeyInfo[key].Velocity; |
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itNoteOffEvent->Param.Note.Velocity = vel; |
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int bend = pChannel->Pitch; |
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uint8_t chanaft = pChannel->ControllerTable[128]; |
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uint8_t* cc = pChannel->ControllerTable; |
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::sfz::trigger_t trig = TRIGGER_RELEASE; |
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pChannel->regionsTemp = pChannel->pInstrument->GetRegionsOnKey ( |
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chan, key, vel, bend, 0, chanaft, 0, 0, 0, trig, cc, 0.0f, 1, NULL, 0, 0 |
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); |
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// now launch the required amount of voices |
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for (int i = 0; i < pChannel->regionsTemp.size(); 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 key = itNoteOnEvent->Param.Note.Key; |
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EngineChannel::MidiKey* pKey = &pChannel->pMIDIKeyInfo[key]; |
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Voice::type_t VoiceType = (ReleaseTriggerVoice) ? Voice::type_release_trigger : (!iLayer) ? Voice::type_release_trigger_required : Voice::type_normal; |
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Pool<Voice>::Iterator itNewVoice; |
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::sfz::Region* pRgn = pChannel->regionsTemp[iLayer]; |
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// no need to process if sample is silent |
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if (!pRgn->GetSample() || !pRgn->GetSample()->GetTotalFrameCount()) return Pool<Voice>::Iterator(); |
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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) ? pRgn->group : 0; |
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if (HandleKeyGroupConflicts) pChannel->HandleKeyGroupConflicts(iKeyGroup, itNoteOnEvent); |
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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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iKeyGroup, 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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persson |
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String s = "$Revision: 1.4 $"; |
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iliev |
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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 |