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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 - 2007 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 "EngineChannel.h" |
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|
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namespace LinuxSampler { namespace gig { |
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|
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EngineChannel::EngineChannel() { |
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pMIDIKeyInfo = new midi_key_info_t[128]; |
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pEngine = NULL; |
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pInstrument = NULL; |
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pEvents = NULL; // we allocate when we retrieve the right Engine object |
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pEventQueue = new RingBuffer<Event,false>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0); |
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pActiveKeys = new Pool<uint>(128); |
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for (uint i = 0; i < 128; i++) { |
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pMIDIKeyInfo[i].pActiveVoices = NULL; // we allocate when we retrieve the right Engine object |
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pMIDIKeyInfo[i].KeyPressed = false; |
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pMIDIKeyInfo[i].Active = false; |
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pMIDIKeyInfo[i].ReleaseTrigger = false; |
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pMIDIKeyInfo[i].pEvents = NULL; // we allocate when we retrieve the right Engine object |
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pMIDIKeyInfo[i].VoiceTheftsQueued = 0; |
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pMIDIKeyInfo[i].RoundRobinIndex = 0; |
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} |
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InstrumentIdx = -1; |
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InstrumentStat = -1; |
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pChannelLeft = NULL; |
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pChannelRight = NULL; |
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AudioDeviceChannelLeft = -1; |
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AudioDeviceChannelRight = -1; |
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pMidiInputPort = NULL; |
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midiChannel = midi_chan_all; |
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ResetControllers(); |
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SoloMode = false; |
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PortamentoMode = false; |
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PortamentoTime = CONFIG_PORTAMENTO_TIME_DEFAULT; |
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} |
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|
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EngineChannel::~EngineChannel() { |
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DisconnectAudioOutputDevice(); |
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if (pInstrument) Engine::instruments.HandBack(pInstrument, this); |
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if (pEventQueue) delete pEventQueue; |
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if (pActiveKeys) delete pActiveKeys; |
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if (pMIDIKeyInfo) delete[] pMIDIKeyInfo; |
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RemoveAllFxSends(); |
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} |
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|
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/** |
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* Implementation of virtual method from abstract EngineChannel interface. |
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* This method will periodically be polled (e.g. by the LSCP server) to |
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* check if some engine channel parameter has changed since the last |
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* StatusChanged() call. |
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* |
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* This method can also be used to mark the engine channel as changed |
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* from outside, e.g. by a MIDI input device. The optional argument |
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* \a nNewStatus can be used for this. |
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* |
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* TODO: This "poll method" is just a lazy solution and might be |
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* replaced in future. |
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* @param bNewStatus - (optional, default: false) sets the new status flag |
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* @returns true if engine channel status has changed since last |
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* StatusChanged() call |
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*/ |
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bool EngineChannel::StatusChanged(bool bNewStatus) { |
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bool b = bStatusChanged; |
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bStatusChanged = bNewStatus; |
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return b; |
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} |
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|
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void EngineChannel::Reset() { |
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if (pEngine) pEngine->DisableAndLock(); |
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ResetInternal(); |
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ResetControllers(); |
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if (pEngine) { |
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pEngine->Enable(); |
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pEngine->Reset(); |
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} |
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} |
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|
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/** |
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* This method is not thread safe! |
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*/ |
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void EngineChannel::ResetInternal() { |
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CurrentKeyDimension = 0; |
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|
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// reset key info |
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for (uint i = 0; i < 128; i++) { |
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if (pMIDIKeyInfo[i].pActiveVoices) |
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pMIDIKeyInfo[i].pActiveVoices->clear(); |
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if (pMIDIKeyInfo[i].pEvents) |
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pMIDIKeyInfo[i].pEvents->clear(); |
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pMIDIKeyInfo[i].KeyPressed = false; |
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pMIDIKeyInfo[i].Active = false; |
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pMIDIKeyInfo[i].ReleaseTrigger = false; |
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pMIDIKeyInfo[i].itSelf = Pool<uint>::Iterator(); |
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pMIDIKeyInfo[i].VoiceTheftsQueued = 0; |
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} |
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SoloKey = -1; // no solo key active yet |
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PortamentoPos = -1.0f; // no portamento active yet |
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|
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// reset all key groups |
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std::map<uint,uint*>::iterator iter = ActiveKeyGroups.begin(); |
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for (; iter != ActiveKeyGroups.end(); iter++) iter->second = NULL; |
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|
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// free all active keys |
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pActiveKeys->clear(); |
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|
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// delete all input events |
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pEventQueue->init(); |
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|
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if (pEngine) pEngine->ResetInternal(); |
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|
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// status of engine channel has changed, so set notify flag |
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bStatusChanged = true; |
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} |
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|
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LinuxSampler::Engine* EngineChannel::GetEngine() { |
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return pEngine; |
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} |
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|
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/** |
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* More or less a workaround to set the instrument name, index and load |
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* status variable to zero percent immediately, that is without blocking |
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* the calling thread. It might be used in future for other preparations |
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* as well though. |
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* |
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* @param FileName - file name of the Gigasampler instrument file |
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* @param Instrument - index of the instrument in the .gig file |
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* @see LoadInstrument() |
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*/ |
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void EngineChannel::PrepareLoadInstrument(const char* FileName, uint Instrument) { |
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InstrumentFile = FileName; |
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InstrumentIdx = Instrument; |
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InstrumentStat = 0; |
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} |
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|
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/** |
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* Load an instrument from a .gig file. PrepareLoadInstrument() has to |
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* be called first to provide the information which instrument to load. |
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* This method will then actually start to load the instrument and block |
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* the calling thread until loading was completed. |
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* |
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* @returns detailed description of the method call result |
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* @see PrepareLoadInstrument() |
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*/ |
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void EngineChannel::LoadInstrument() { |
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::gig::Instrument* oldInstrument = pInstrument; |
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|
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// free old instrument |
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if (oldInstrument) { |
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if (pEngine) { |
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// make sure we don't trigger any new notes with the |
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// old instrument |
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::gig::DimensionRegion** dimRegionsInUse = pEngine->ChangeInstrument(this, 0); |
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|
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// give old instrument back to instrument manager, but |
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// keep the dimension regions and samples that are in |
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// use |
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Engine::instruments.HandBackInstrument(oldInstrument, this, dimRegionsInUse); |
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} else { |
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Engine::instruments.HandBack(oldInstrument, this); |
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} |
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} |
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|
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// delete all key groups |
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ActiveKeyGroups.clear(); |
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|
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// request gig instrument from instrument manager |
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::gig::Instrument* newInstrument; |
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try { |
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InstrumentManager::instrument_id_t instrid; |
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instrid.FileName = InstrumentFile; |
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instrid.Index = InstrumentIdx; |
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newInstrument = Engine::instruments.Borrow(instrid, this); |
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if (!newInstrument) { |
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throw InstrumentResourceManagerException("resource was not created"); |
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} |
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} |
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catch (RIFF::Exception e) { |
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InstrumentStat = -2; |
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String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message; |
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throw Exception(msg); |
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} |
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catch (InstrumentResourceManagerException e) { |
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InstrumentStat = -3; |
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String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message(); |
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throw Exception(msg); |
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} |
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catch (...) { |
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InstrumentStat = -4; |
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throw Exception("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file."); |
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} |
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|
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// rebuild ActiveKeyGroups map with key groups of current instrument |
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for (::gig::Region* pRegion = newInstrument->GetFirstRegion(); pRegion; pRegion = newInstrument->GetNextRegion()) |
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if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL; |
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|
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InstrumentIdxName = newInstrument->pInfo->Name; |
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InstrumentStat = 100; |
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|
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if (pEngine) pEngine->ChangeInstrument(this, newInstrument); |
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else pInstrument = newInstrument; |
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} |
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|
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/** |
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* Will be called by the InstrumentResourceManager when the instrument |
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* we are currently using on this EngineChannel is going to be updated, |
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* so we can stop playback before that happens. |
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*/ |
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void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) { |
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dmsg(3,("gig::Engine: Received instrument update message.\n")); |
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if (pEngine) pEngine->DisableAndLock(); |
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ResetInternal(); |
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this->pInstrument = NULL; |
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} |
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|
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/** |
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* Will be called by the InstrumentResourceManager when the instrument |
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* update process was completed, so we can continue with playback. |
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*/ |
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void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) { |
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this->pInstrument = pNewResource; //TODO: there are couple of engine parameters we should update here as well if the instrument was updated (see LoadInstrument()) |
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if (pEngine) pEngine->Enable(); |
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bStatusChanged = true; // status of engine has changed, so set notify flag |
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} |
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|
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/** |
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* Will be called by the InstrumentResourceManager on progress changes |
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* while loading or realoading an instrument for this EngineChannel. |
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* |
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* @param fProgress - current progress as value between 0.0 and 1.0 |
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*/ |
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void EngineChannel::OnResourceProgress(float fProgress) { |
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this->InstrumentStat = int(fProgress * 100.0f); |
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dmsg(7,("gig::EngineChannel: progress %d%", InstrumentStat)); |
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bStatusChanged = true; // status of engine has changed, so set notify flag |
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} |
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|
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void EngineChannel::Connect(AudioOutputDevice* pAudioOut) { |
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if (pEngine) { |
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if (pEngine->pAudioOutputDevice == pAudioOut) return; |
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DisconnectAudioOutputDevice(); |
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} |
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pEngine = Engine::AcquireEngine(this, pAudioOut); |
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ResetInternal(); |
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pEvents = new RTList<Event>(pEngine->pEventPool); |
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for (uint i = 0; i < 128; i++) { |
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pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool); |
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pMIDIKeyInfo[i].pEvents = new RTList<Event>(pEngine->pEventPool); |
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} |
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AudioDeviceChannelLeft = 0; |
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AudioDeviceChannelRight = 1; |
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if (fxSends.empty()) { // render directly into the AudioDevice's output buffers |
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pChannelLeft = pAudioOut->Channel(AudioDeviceChannelLeft); |
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pChannelRight = pAudioOut->Channel(AudioDeviceChannelRight); |
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} else { // use local buffers for rendering and copy later |
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// ensure the local buffers have the correct size |
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if (pChannelLeft) delete pChannelLeft; |
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if (pChannelRight) delete pChannelRight; |
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pChannelLeft = new AudioChannel(0, pAudioOut->MaxSamplesPerCycle()); |
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pChannelRight = new AudioChannel(1, pAudioOut->MaxSamplesPerCycle()); |
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} |
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if (pEngine->EngineDisabled.GetUnsafe()) pEngine->Enable(); |
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MidiInputPort::AddSysexListener(pEngine); |
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} |
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|
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void EngineChannel::DisconnectAudioOutputDevice() { |
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if (pEngine) { // if clause to prevent disconnect loops |
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ResetInternal(); |
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if (pEvents) { |
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delete pEvents; |
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pEvents = NULL; |
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} |
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for (uint i = 0; i < 128; i++) { |
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if (pMIDIKeyInfo[i].pActiveVoices) { |
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delete pMIDIKeyInfo[i].pActiveVoices; |
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pMIDIKeyInfo[i].pActiveVoices = NULL; |
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} |
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if (pMIDIKeyInfo[i].pEvents) { |
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delete pMIDIKeyInfo[i].pEvents; |
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pMIDIKeyInfo[i].pEvents = NULL; |
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} |
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} |
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Engine* oldEngine = pEngine; |
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AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice; |
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pEngine = NULL; |
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Engine::FreeEngine(this, oldAudioDevice); |
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AudioDeviceChannelLeft = -1; |
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AudioDeviceChannelRight = -1; |
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if (!fxSends.empty()) { // free the local rendering buffers |
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if (pChannelLeft) delete pChannelLeft; |
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if (pChannelRight) delete pChannelRight; |
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} |
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pChannelLeft = NULL; |
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pChannelRight = NULL; |
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} |
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} |
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|
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AudioOutputDevice* EngineChannel::GetAudioOutputDevice() { |
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return (pEngine) ? pEngine->pAudioOutputDevice : NULL; |
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} |
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|
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void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) { |
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if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet."); |
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|
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AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel); |
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if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel)); |
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switch (EngineAudioChannel) { |
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case 0: // left output channel |
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if (fxSends.empty()) pChannelLeft = pChannel; |
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AudioDeviceChannelLeft = AudioDeviceChannel; |
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break; |
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case 1: // right output channel |
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if (fxSends.empty()) pChannelRight = pChannel; |
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AudioDeviceChannelRight = AudioDeviceChannel; |
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break; |
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default: |
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throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel)); |
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} |
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} |
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|
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int EngineChannel::OutputChannel(uint EngineAudioChannel) { |
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switch (EngineAudioChannel) { |
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case 0: // left channel |
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return AudioDeviceChannelLeft; |
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case 1: // right channel |
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return AudioDeviceChannelRight; |
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default: |
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throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel)); |
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} |
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} |
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|
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void EngineChannel::Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) { |
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if (!pMidiPort || pMidiPort == this->pMidiInputPort) return; |
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DisconnectMidiInputPort(); |
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this->pMidiInputPort = pMidiPort; |
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this->midiChannel = MidiChannel; |
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pMidiPort->Connect(this, MidiChannel); |
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} |
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|
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void EngineChannel::DisconnectMidiInputPort() { |
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MidiInputPort* pOldPort = this->pMidiInputPort; |
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this->pMidiInputPort = NULL; |
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if (pOldPort) pOldPort->Disconnect(this); |
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} |
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|
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MidiInputPort* EngineChannel::GetMidiInputPort() { |
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return pMidiInputPort; |
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} |
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|
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midi_chan_t EngineChannel::MidiChannel() { |
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return midiChannel; |
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} |
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|
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FxSend* EngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) { |
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if (pEngine) pEngine->DisableAndLock(); |
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FxSend* pFxSend = new FxSend(this, MidiCtrl, Name); |
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if (fxSends.empty()) { |
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if (pEngine && pEngine->pAudioOutputDevice) { |
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AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice; |
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// create local render buffers |
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pChannelLeft = new AudioChannel(0, pDevice->MaxSamplesPerCycle()); |
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pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle()); |
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} else { |
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// postpone local render buffer creation until audio device is assigned |
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pChannelLeft = NULL; |
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pChannelRight = NULL; |
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} |
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} |
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fxSends.push_back(pFxSend); |
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if (pEngine) pEngine->Enable(); |
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fireFxSendCountChanged(iSamplerChannelIndex, GetFxSendCount()); |
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|
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return pFxSend; |
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} |
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|
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FxSend* EngineChannel::GetFxSend(uint FxSendIndex) { |
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return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL; |
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} |
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|
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uint EngineChannel::GetFxSendCount() { |
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return fxSends.size(); |
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} |
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|
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void EngineChannel::RemoveFxSend(FxSend* pFxSend) { |
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if (pEngine) pEngine->DisableAndLock(); |
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for ( |
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std::vector<FxSend*>::iterator iter = fxSends.begin(); |
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iter != fxSends.end(); iter++ |
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) { |
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if (*iter == pFxSend) { |
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delete pFxSend; |
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fxSends.erase(iter); |
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if (fxSends.empty()) { |
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// destroy local render buffers |
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if (pChannelLeft) delete pChannelLeft; |
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if (pChannelRight) delete pChannelRight; |
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// fallback to render directly into AudioOutputDevice's buffers |
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if (pEngine && pEngine->pAudioOutputDevice) { |
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pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft); |
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pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight); |
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} else { // we update the pointers later |
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pChannelLeft = NULL; |
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pChannelRight = NULL; |
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} |
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} |
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break; |
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} |
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} |
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if (pEngine) pEngine->Enable(); |
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fireFxSendCountChanged(iSamplerChannelIndex, GetFxSendCount()); |
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} |
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|
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/** |
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* Will be called by the MIDIIn Thread to let the audio thread trigger a new |
435 |
* voice for the given key. This method is meant for real time rendering, |
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* that is an event will immediately be created with the current system |
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* time as time stamp. |
438 |
* |
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* @param Key - MIDI key number of the triggered key |
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* @param Velocity - MIDI velocity value of the triggered key |
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*/ |
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void EngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity) { |
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if (pEngine) { |
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Event event = pEngine->pEventGenerator->CreateEvent(); |
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event.Type = Event::type_note_on; |
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event.Param.Note.Key = Key; |
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event.Param.Note.Velocity = Velocity; |
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event.pEngineChannel = this; |
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if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
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else dmsg(1,("EngineChannel: Input event queue full!")); |
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} |
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} |
453 |
|
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/** |
455 |
* Will be called by the MIDIIn Thread to let the audio thread trigger a new |
456 |
* voice for the given key. This method is meant for offline rendering |
457 |
* and / or for cases where the exact position of the event in the current |
458 |
* audio fragment is already known. |
459 |
* |
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* @param Key - MIDI key number of the triggered key |
461 |
* @param Velocity - MIDI velocity value of the triggered key |
462 |
* @param FragmentPos - sample point position in the current audio |
463 |
* fragment to which this event belongs to |
464 |
*/ |
465 |
void EngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) { |
466 |
if (FragmentPos < 0) { |
467 |
dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!")); |
468 |
} |
469 |
else if (pEngine) { |
470 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
471 |
event.Type = Event::type_note_on; |
472 |
event.Param.Note.Key = Key; |
473 |
event.Param.Note.Velocity = Velocity; |
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event.pEngineChannel = this; |
475 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
476 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
477 |
} |
478 |
} |
479 |
|
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/** |
481 |
* Will be called by the MIDIIn Thread to signal the audio thread to release |
482 |
* voice(s) on the given key. This method is meant for real time rendering, |
483 |
* that is an event will immediately be created with the current system |
484 |
* time as time stamp. |
485 |
* |
486 |
* @param Key - MIDI key number of the released key |
487 |
* @param Velocity - MIDI release velocity value of the released key |
488 |
*/ |
489 |
void EngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity) { |
490 |
if (pEngine) { |
491 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
492 |
event.Type = Event::type_note_off; |
493 |
event.Param.Note.Key = Key; |
494 |
event.Param.Note.Velocity = Velocity; |
495 |
event.pEngineChannel = this; |
496 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
497 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
498 |
} |
499 |
} |
500 |
|
501 |
/** |
502 |
* Will be called by the MIDIIn Thread to signal the audio thread to release |
503 |
* voice(s) on the given key. This method is meant for offline rendering |
504 |
* and / or for cases where the exact position of the event in the current |
505 |
* audio fragment is already known. |
506 |
* |
507 |
* @param Key - MIDI key number of the released key |
508 |
* @param Velocity - MIDI release velocity value of the released key |
509 |
* @param FragmentPos - sample point position in the current audio |
510 |
* fragment to which this event belongs to |
511 |
*/ |
512 |
void EngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) { |
513 |
if (FragmentPos < 0) { |
514 |
dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!")); |
515 |
} |
516 |
else if (pEngine) { |
517 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
518 |
event.Type = Event::type_note_off; |
519 |
event.Param.Note.Key = Key; |
520 |
event.Param.Note.Velocity = Velocity; |
521 |
event.pEngineChannel = this; |
522 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
523 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
524 |
} |
525 |
} |
526 |
|
527 |
/** |
528 |
* Will be called by the MIDIIn Thread to signal the audio thread to change |
529 |
* the pitch value for all voices. This method is meant for real time |
530 |
* rendering, that is an event will immediately be created with the |
531 |
* current system time as time stamp. |
532 |
* |
533 |
* @param Pitch - MIDI pitch value (-8192 ... +8191) |
534 |
*/ |
535 |
void EngineChannel::SendPitchbend(int Pitch) { |
536 |
if (pEngine) { |
537 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
538 |
event.Type = Event::type_pitchbend; |
539 |
event.Param.Pitch.Pitch = Pitch; |
540 |
event.pEngineChannel = this; |
541 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
542 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
543 |
} |
544 |
} |
545 |
|
546 |
/** |
547 |
* Will be called by the MIDIIn Thread to signal the audio thread to change |
548 |
* the pitch value for all voices. This method is meant for offline |
549 |
* rendering and / or for cases where the exact position of the event in |
550 |
* the current audio fragment is already known. |
551 |
* |
552 |
* @param Pitch - MIDI pitch value (-8192 ... +8191) |
553 |
* @param FragmentPos - sample point position in the current audio |
554 |
* fragment to which this event belongs to |
555 |
*/ |
556 |
void EngineChannel::SendPitchbend(int Pitch, int32_t FragmentPos) { |
557 |
if (FragmentPos < 0) { |
558 |
dmsg(1,("EngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!")); |
559 |
} |
560 |
else if (pEngine) { |
561 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
562 |
event.Type = Event::type_pitchbend; |
563 |
event.Param.Pitch.Pitch = Pitch; |
564 |
event.pEngineChannel = this; |
565 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
566 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
567 |
} |
568 |
} |
569 |
|
570 |
/** |
571 |
* Will be called by the MIDIIn Thread to signal the audio thread that a |
572 |
* continuous controller value has changed. This method is meant for real |
573 |
* time rendering, that is an event will immediately be created with the |
574 |
* current system time as time stamp. |
575 |
* |
576 |
* @param Controller - MIDI controller number of the occured control change |
577 |
* @param Value - value of the control change |
578 |
*/ |
579 |
void EngineChannel::SendControlChange(uint8_t Controller, uint8_t Value) { |
580 |
if (pEngine) { |
581 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
582 |
event.Type = Event::type_control_change; |
583 |
event.Param.CC.Controller = Controller; |
584 |
event.Param.CC.Value = Value; |
585 |
event.pEngineChannel = this; |
586 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
587 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
588 |
} |
589 |
} |
590 |
|
591 |
/** |
592 |
* Will be called by the MIDIIn Thread to signal the audio thread that a |
593 |
* continuous controller value has changed. This method is meant for |
594 |
* offline rendering and / or for cases where the exact position of the |
595 |
* event in the current audio fragment is already known. |
596 |
* |
597 |
* @param Controller - MIDI controller number of the occured control change |
598 |
* @param Value - value of the control change |
599 |
* @param FragmentPos - sample point position in the current audio |
600 |
* fragment to which this event belongs to |
601 |
*/ |
602 |
void EngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, int32_t FragmentPos) { |
603 |
if (FragmentPos < 0) { |
604 |
dmsg(1,("EngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!")); |
605 |
} |
606 |
else if (pEngine) { |
607 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
608 |
event.Type = Event::type_control_change; |
609 |
event.Param.CC.Controller = Controller; |
610 |
event.Param.CC.Value = Value; |
611 |
event.pEngineChannel = this; |
612 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
613 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
614 |
} |
615 |
} |
616 |
|
617 |
void EngineChannel::ClearEventLists() { |
618 |
pEvents->clear(); |
619 |
// empty MIDI key specific event lists |
620 |
{ |
621 |
RTList<uint>::Iterator iuiKey = pActiveKeys->first(); |
622 |
RTList<uint>::Iterator end = pActiveKeys->end(); |
623 |
for(; iuiKey != end; ++iuiKey) { |
624 |
pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key |
625 |
} |
626 |
} |
627 |
} |
628 |
|
629 |
void EngineChannel::ResetControllers() { |
630 |
Pitch = 0; |
631 |
SustainPedal = false; |
632 |
SostenutoPedal = false; |
633 |
GlobalVolume = 1.0f; |
634 |
MidiVolume = 1.0; |
635 |
GlobalPanLeft = 1.0f; |
636 |
GlobalPanRight = 1.0f; |
637 |
GlobalTranspose = 0; |
638 |
// set all MIDI controller values to zero |
639 |
memset(ControllerTable, 0x00, 129); |
640 |
// reset all FX Send levels |
641 |
for ( |
642 |
std::vector<FxSend*>::iterator iter = fxSends.begin(); |
643 |
iter != fxSends.end(); iter++ |
644 |
) { |
645 |
(*iter)->Reset(); |
646 |
} |
647 |
} |
648 |
|
649 |
/** |
650 |
* Copy all events from the engine channel's input event queue buffer to |
651 |
* the internal event list. This will be done at the beginning of each |
652 |
* audio cycle (that is each RenderAudio() call) to distinguish all |
653 |
* events which have to be processed in the current audio cycle. Each |
654 |
* EngineChannel has it's own input event queue for the common channel |
655 |
* specific events (like NoteOn, NoteOff and ControlChange events). |
656 |
* Beside that, the engine also has a input event queue for global |
657 |
* events (usually SysEx messages). |
658 |
* |
659 |
* @param Samples - number of sample points to be processed in the |
660 |
* current audio cycle |
661 |
*/ |
662 |
void EngineChannel::ImportEvents(uint Samples) { |
663 |
RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader(); |
664 |
Event* pEvent; |
665 |
while (true) { |
666 |
// get next event from input event queue |
667 |
if (!(pEvent = eventQueueReader.pop())) break; |
668 |
// if younger event reached, ignore that and all subsequent ones for now |
669 |
if (pEvent->FragmentPos() >= Samples) { |
670 |
eventQueueReader--; |
671 |
dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples)); |
672 |
pEvent->ResetFragmentPos(); |
673 |
break; |
674 |
} |
675 |
// copy event to internal event list |
676 |
if (pEvents->poolIsEmpty()) { |
677 |
dmsg(1,("Event pool emtpy!\n")); |
678 |
break; |
679 |
} |
680 |
*pEvents->allocAppend() = *pEvent; |
681 |
} |
682 |
eventQueueReader.free(); // free all copied events from input queue |
683 |
} |
684 |
|
685 |
void EngineChannel::RemoveAllFxSends() { |
686 |
if (pEngine) pEngine->DisableAndLock(); |
687 |
if (!fxSends.empty()) { // free local render buffers |
688 |
if (pChannelLeft) { |
689 |
delete pChannelLeft; |
690 |
if (pEngine && pEngine->pAudioOutputDevice) { |
691 |
// fallback to render directly to the AudioOutputDevice's buffer |
692 |
pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft); |
693 |
} else pChannelLeft = NULL; |
694 |
} |
695 |
if (pChannelRight) { |
696 |
delete pChannelRight; |
697 |
if (pEngine && pEngine->pAudioOutputDevice) { |
698 |
// fallback to render directly to the AudioOutputDevice's buffer |
699 |
pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight); |
700 |
} else pChannelRight = NULL; |
701 |
} |
702 |
} |
703 |
for (int i = 0; i < fxSends.size(); i++) delete fxSends[i]; |
704 |
fxSends.clear(); |
705 |
if (pEngine) pEngine->Enable(); |
706 |
} |
707 |
|
708 |
float EngineChannel::Volume() { |
709 |
return GlobalVolume; |
710 |
} |
711 |
|
712 |
void EngineChannel::Volume(float f) { |
713 |
GlobalVolume = f; |
714 |
bStatusChanged = true; // status of engine channel has changed, so set notify flag |
715 |
} |
716 |
|
717 |
uint EngineChannel::Channels() { |
718 |
return 2; |
719 |
} |
720 |
|
721 |
String EngineChannel::InstrumentFileName() { |
722 |
return InstrumentFile; |
723 |
} |
724 |
|
725 |
String EngineChannel::InstrumentName() { |
726 |
return InstrumentIdxName; |
727 |
} |
728 |
|
729 |
int EngineChannel::InstrumentIndex() { |
730 |
return InstrumentIdx; |
731 |
} |
732 |
|
733 |
int EngineChannel::InstrumentStatus() { |
734 |
return InstrumentStat; |
735 |
} |
736 |
|
737 |
String EngineChannel::EngineName() { |
738 |
return LS_GIG_ENGINE_NAME; |
739 |
} |
740 |
|
741 |
}} // namespace LinuxSampler::gig |