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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) 2005-2008 Christian Schoenebeck * |
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* Copyright (C) 2009-2012 Christian Schoenebeck and Grigor Iliev * |
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* Copyright (C) 2012-2016 Christian Schoenebeck and Andreas Persson * |
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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 "AbstractEngineChannel.h" |
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#include "../common/global_private.h" |
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#include "../Sampler.h" |
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|
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namespace LinuxSampler { |
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|
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AbstractEngineChannel::AbstractEngineChannel() : |
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virtualMidiDevicesReader_AudioThread(virtualMidiDevices), |
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virtualMidiDevicesReader_MidiThread(virtualMidiDevices) |
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{ |
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pEngine = NULL; |
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pEvents = NULL; // we allocate when we retrieve the right Engine object |
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delayedEvents.pList = NULL; |
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pEventQueue = new RingBuffer<Event,false>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0); |
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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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midiChannel = midi_chan_all; |
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ResetControllers(); |
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PortamentoMode = false; |
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PortamentoTime = CONFIG_PORTAMENTO_TIME_DEFAULT; |
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pScript = NULL; |
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} |
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|
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AbstractEngineChannel::~AbstractEngineChannel() { |
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delete pEventQueue; |
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DeleteGroupEventLists(); |
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RemoveAllFxSends(); |
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} |
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|
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Engine* AbstractEngineChannel::GetEngine() { |
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return pEngine; |
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} |
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|
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uint AbstractEngineChannel::Channels() { |
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return 2; |
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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 instrument file |
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* @param Instrument - index of the instrument in the file |
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* @see LoadInstrument() |
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*/ |
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void AbstractEngineChannel::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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String AbstractEngineChannel::InstrumentFileName() { |
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return InstrumentFile; |
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} |
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|
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String AbstractEngineChannel::InstrumentName() { |
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return InstrumentIdxName; |
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} |
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|
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int AbstractEngineChannel::InstrumentIndex() { |
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return InstrumentIdx; |
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} |
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|
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int AbstractEngineChannel::InstrumentStatus() { |
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return InstrumentStat; |
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} |
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|
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String AbstractEngineChannel::EngineName() { |
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return AbstractEngine::GetFormatString(GetEngineFormat()); |
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} |
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|
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void AbstractEngineChannel::Reset() { |
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if (pEngine) pEngine->DisableAndLock(); |
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ResetInternal(false/*don't reset engine*/); |
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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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void AbstractEngineChannel::ResetControllers() { |
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Pitch = 0; |
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GlobalVolume = 1.0f; |
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MidiVolume = 1.0; |
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iLastPanRequest = 64; |
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GlobalTranspose = 0; |
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// set all MIDI controller values to zero |
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memset(ControllerTable, 0x00, 129); |
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// reset all FX Send levels |
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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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(*iter)->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 AbstractEngineChannel::ResetInternal(bool bResetEngine) { |
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CurrentKeyDimension = 0; |
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PortamentoPos = -1.0f; // no portamento active yet |
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|
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// delete all active instrument script events |
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if (pScript) pScript->resetEvents(); |
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|
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// free all delayed MIDI events |
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delayedEvents.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 (bResetEngine && 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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/** |
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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 AbstractEngineChannel::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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float AbstractEngineChannel::Volume() { |
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return GlobalVolume; |
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} |
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|
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void AbstractEngineChannel::Volume(float f) { |
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GlobalVolume = f; |
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bStatusChanged = true; // status of engine channel has changed, so set notify flag |
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} |
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|
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float AbstractEngineChannel::Pan() { |
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return float(iLastPanRequest - 64) / 64.0f; |
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} |
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|
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void AbstractEngineChannel::Pan(float f) { |
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int iMidiPan = int(f * 64.0f) + 64; |
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if (iMidiPan > 127) iMidiPan = 127; |
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else if (iMidiPan < 0) iMidiPan = 0; |
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iLastPanRequest = iMidiPan; |
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} |
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|
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AudioOutputDevice* AbstractEngineChannel::GetAudioOutputDevice() { |
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return (pEngine) ? pEngine->pAudioOutputDevice : NULL; |
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} |
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|
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/** |
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* Gets thread safe access to the currently connected audio output |
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* device from other threads than the lscp thread. |
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*/ |
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AudioOutputDevice* AbstractEngineChannel::GetAudioOutputDeviceSafe() { |
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LockGuard lock(EngineMutex); |
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return GetAudioOutputDevice(); |
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} |
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|
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void AbstractEngineChannel::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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bStatusChanged = true; |
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} |
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|
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int AbstractEngineChannel::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 AbstractEngineChannel::Connect(MidiInputPort* pMidiPort) { |
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if (!pMidiPort) return; |
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|
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Sync< ArrayList<MidiInputPort*> > connections = midiInputs.back(); |
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|
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// check if connection already exists |
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for (int i = 0; i < connections->size(); ++i) |
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if ((*connections)[i] == pMidiPort) |
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return; // to avoid endless recursion |
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|
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connections->add(pMidiPort); |
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|
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// inform MIDI port about this new connection |
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pMidiPort->Connect(this, MidiChannel()); |
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} |
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|
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void AbstractEngineChannel::Disconnect(MidiInputPort* pMidiPort) { |
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if (!pMidiPort) return; |
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|
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Sync< ArrayList<MidiInputPort*> > connections = midiInputs.back(); |
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|
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for (int i = 0; i < connections->size(); ++i) { |
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if ((*connections)[i] == pMidiPort) { |
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connections->remove(i); |
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// inform MIDI port about this disconnection |
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pMidiPort->Disconnect(this); |
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return; |
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} |
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} |
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} |
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|
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void AbstractEngineChannel::DisconnectAllMidiInputPorts() { |
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Sync< ArrayList<MidiInputPort*> > connections = midiInputs.back(); |
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ArrayList<MidiInputPort*> clonedList = *connections; |
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connections->clear(); |
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for (int i = 0; i < clonedList.size(); ++i) clonedList[i]->Disconnect(this); |
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} |
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|
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uint AbstractEngineChannel::GetMidiInputPortCount() { |
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Sync< ArrayList<MidiInputPort*> > connections = midiInputs.back(); |
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return connections->size(); |
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} |
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|
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MidiInputPort* AbstractEngineChannel::GetMidiInputPort(uint index) { |
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Sync< ArrayList<MidiInputPort*> > connections = midiInputs.back(); |
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return (index < connections->size()) ? (*connections)[index] : NULL; |
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} |
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|
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// deprecated (just for API backward compatibility) - may be removed in future |
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void AbstractEngineChannel::Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) { |
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if (!pMidiPort) return; |
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|
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Sync< ArrayList<MidiInputPort*> > connections = midiInputs.back(); |
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|
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// check against endless recursion |
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if (connections->size() == 1 && (*connections)[0] == pMidiPort && this->midiChannel == MidiChannel) |
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return; |
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|
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if (!isValidMidiChan(MidiChannel)) |
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throw MidiInputException("Invalid MIDI channel (" + ToString(int(MidiChannel)) + ")"); |
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|
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this->midiChannel = MidiChannel; |
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|
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// disconnect all currently connected MIDI ports |
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ArrayList<MidiInputPort*> clonedList = *connections; |
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connections->clear(); |
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for (int i = 0; i < clonedList.size(); ++i) |
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clonedList[i]->Disconnect(this); |
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|
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// connect the new port |
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connections->add(pMidiPort); |
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pMidiPort->Connect(this, MidiChannel); |
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} |
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|
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// deprecated (just for API backward compatibility) - may be removed in future |
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void AbstractEngineChannel::DisconnectMidiInputPort() { |
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DisconnectAllMidiInputPorts(); |
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} |
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|
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// deprecated (just for API backward compatibility) - may be removed in future |
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MidiInputPort* AbstractEngineChannel::GetMidiInputPort() { |
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return GetMidiInputPort(0); |
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} |
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|
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midi_chan_t AbstractEngineChannel::MidiChannel() { |
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return midiChannel; |
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} |
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|
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void AbstractEngineChannel::SetMidiChannel(midi_chan_t MidiChannel) { |
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if (this->midiChannel == MidiChannel) return; |
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if (!isValidMidiChan(MidiChannel)) |
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throw MidiInputException("Invalid MIDI channel (" + ToString(int(MidiChannel)) + ")"); |
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|
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this->midiChannel = MidiChannel; |
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|
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Sync< ArrayList<MidiInputPort*> > connections = midiInputs.back(); |
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ArrayList<MidiInputPort*> clonedList = *connections; |
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|
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DisconnectAllMidiInputPorts(); |
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|
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for (int i = 0; i < clonedList.size(); ++i) Connect(clonedList[i]); |
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} |
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|
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void AbstractEngineChannel::Connect(VirtualMidiDevice* pDevice) { |
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// double buffer ... double work ... |
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{ |
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ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate(); |
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devices.add(pDevice); |
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} |
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{ |
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ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig(); |
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devices.add(pDevice); |
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} |
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} |
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|
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void AbstractEngineChannel::Disconnect(VirtualMidiDevice* pDevice) { |
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// double buffer ... double work ... |
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{ |
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ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate(); |
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devices.remove(pDevice); |
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} |
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{ |
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ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig(); |
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devices.remove(pDevice); |
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} |
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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 |
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* 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. |
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* |
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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 AbstractEngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel) { |
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if (pEngine) { |
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// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
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LockGuard g; |
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if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
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|
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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.Param.Note.Channel = MidiChannel; |
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memset(&event.Format, 0, sizeof(event.Format)); // init format speific stuff with zeroes |
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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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// inform connected virtual MIDI devices if any ... |
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// (e.g. virtual MIDI keyboard in instrument editor(s)) |
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ArrayList<VirtualMidiDevice*>& devices = |
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const_cast<ArrayList<VirtualMidiDevice*>&>( |
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virtualMidiDevicesReader_MidiThread.Lock() |
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); |
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for (int i = 0; i < devices.size(); i++) { |
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devices[i]->SendNoteOnToDevice(Key, Velocity); |
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} |
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virtualMidiDevicesReader_MidiThread.Unlock(); |
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} |
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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 |
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* voice for the given key. This method is meant for offline rendering |
406 |
* and / or for cases where the exact position of the event in the current |
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* audio fragment is already known. |
408 |
* |
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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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* @param FragmentPos - sample point position in the current audio |
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* fragment to which this event belongs to |
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*/ |
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void AbstractEngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel, int32_t FragmentPos) { |
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if (FragmentPos < 0) { |
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dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!")); |
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} |
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else if (pEngine) { |
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// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
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LockGuard g; |
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if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
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|
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Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
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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.Param.Note.Channel = MidiChannel; |
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memset(&event.Format, 0, sizeof(event.Format)); // init format speific stuff with zeroes |
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event.pEngineChannel = this; |
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if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
431 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
432 |
// inform connected virtual MIDI devices if any ... |
433 |
// (e.g. virtual MIDI keyboard in instrument editor(s)) |
434 |
ArrayList<VirtualMidiDevice*>& devices = |
435 |
const_cast<ArrayList<VirtualMidiDevice*>&>( |
436 |
virtualMidiDevicesReader_MidiThread.Lock() |
437 |
); |
438 |
for (int i = 0; i < devices.size(); i++) { |
439 |
devices[i]->SendNoteOnToDevice(Key, Velocity); |
440 |
} |
441 |
virtualMidiDevicesReader_MidiThread.Unlock(); |
442 |
} |
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} |
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|
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/** |
446 |
* Will be called by the MIDIIn Thread to signal the audio thread to release |
447 |
* voice(s) on the given key. This method is meant for real time rendering, |
448 |
* that is an event will immediately be created with the current system |
449 |
* time as time stamp. |
450 |
* |
451 |
* @param Key - MIDI key number of the released key |
452 |
* @param Velocity - MIDI release velocity value of the released key |
453 |
*/ |
454 |
void AbstractEngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel) { |
455 |
if (pEngine) { |
456 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
457 |
LockGuard g; |
458 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
459 |
|
460 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
461 |
event.Type = Event::type_note_off; |
462 |
event.Param.Note.Key = Key; |
463 |
event.Param.Note.Velocity = Velocity; |
464 |
event.Param.Note.Channel = MidiChannel; |
465 |
memset(&event.Format, 0, sizeof(event.Format)); // init format speific stuff with zeroes |
466 |
event.pEngineChannel = this; |
467 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
468 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
469 |
// inform connected virtual MIDI devices if any ... |
470 |
// (e.g. virtual MIDI keyboard in instrument editor(s)) |
471 |
ArrayList<VirtualMidiDevice*>& devices = |
472 |
const_cast<ArrayList<VirtualMidiDevice*>&>( |
473 |
virtualMidiDevicesReader_MidiThread.Lock() |
474 |
); |
475 |
for (int i = 0; i < devices.size(); i++) { |
476 |
devices[i]->SendNoteOffToDevice(Key, Velocity); |
477 |
} |
478 |
virtualMidiDevicesReader_MidiThread.Unlock(); |
479 |
} |
480 |
} |
481 |
|
482 |
/** |
483 |
* Will be called by the MIDIIn Thread to signal the audio thread to release |
484 |
* voice(s) on the given key. This method is meant for offline rendering |
485 |
* and / or for cases where the exact position of the event in the current |
486 |
* audio fragment is already known. |
487 |
* |
488 |
* @param Key - MIDI key number of the released key |
489 |
* @param Velocity - MIDI release velocity value of the released key |
490 |
* @param FragmentPos - sample point position in the current audio |
491 |
* fragment to which this event belongs to |
492 |
*/ |
493 |
void AbstractEngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel, int32_t FragmentPos) { |
494 |
if (FragmentPos < 0) { |
495 |
dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!")); |
496 |
} |
497 |
else if (pEngine) { |
498 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
499 |
LockGuard g; |
500 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
501 |
|
502 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
503 |
event.Type = Event::type_note_off; |
504 |
event.Param.Note.Key = Key; |
505 |
event.Param.Note.Velocity = Velocity; |
506 |
event.Param.Note.Channel = MidiChannel; |
507 |
memset(&event.Format, 0, sizeof(event.Format)); // init format speific stuff with zeroes |
508 |
event.pEngineChannel = this; |
509 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
510 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
511 |
// inform connected virtual MIDI devices if any ... |
512 |
// (e.g. virtual MIDI keyboard in instrument editor(s)) |
513 |
ArrayList<VirtualMidiDevice*>& devices = |
514 |
const_cast<ArrayList<VirtualMidiDevice*>&>( |
515 |
virtualMidiDevicesReader_MidiThread.Lock() |
516 |
); |
517 |
for (int i = 0; i < devices.size(); i++) { |
518 |
devices[i]->SendNoteOffToDevice(Key, Velocity); |
519 |
} |
520 |
virtualMidiDevicesReader_MidiThread.Unlock(); |
521 |
} |
522 |
} |
523 |
|
524 |
/** |
525 |
* Will be called by the MIDIIn Thread to signal the audio thread to change |
526 |
* the pitch value for all voices. This method is meant for real time |
527 |
* rendering, that is an event will immediately be created with the |
528 |
* current system time as time stamp. |
529 |
* |
530 |
* @param Pitch - MIDI pitch value (-8192 ... +8191) |
531 |
*/ |
532 |
void AbstractEngineChannel::SendPitchbend(int Pitch, uint8_t MidiChannel) { |
533 |
if (pEngine) { |
534 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
535 |
LockGuard g; |
536 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
537 |
|
538 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
539 |
event.Type = Event::type_pitchbend; |
540 |
event.Param.Pitch.Pitch = Pitch; |
541 |
event.Param.Pitch.Channel = MidiChannel; |
542 |
memset(&event.Format, 0, sizeof(event.Format)); // init format speific stuff with zeroes |
543 |
event.pEngineChannel = this; |
544 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
545 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
546 |
} |
547 |
} |
548 |
|
549 |
/** |
550 |
* Will be called by the MIDIIn Thread to signal the audio thread to change |
551 |
* the pitch value for all voices. This method is meant for offline |
552 |
* rendering and / or for cases where the exact position of the event in |
553 |
* the current audio fragment is already known. |
554 |
* |
555 |
* @param Pitch - MIDI pitch value (-8192 ... +8191) |
556 |
* @param FragmentPos - sample point position in the current audio |
557 |
* fragment to which this event belongs to |
558 |
*/ |
559 |
void AbstractEngineChannel::SendPitchbend(int Pitch, uint8_t MidiChannel, int32_t FragmentPos) { |
560 |
if (FragmentPos < 0) { |
561 |
dmsg(1,("AbstractEngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!")); |
562 |
} |
563 |
else if (pEngine) { |
564 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
565 |
LockGuard g; |
566 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
567 |
|
568 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
569 |
event.Type = Event::type_pitchbend; |
570 |
event.Param.Pitch.Pitch = Pitch; |
571 |
event.Param.Pitch.Channel = MidiChannel; |
572 |
memset(&event.Format, 0, sizeof(event.Format)); // init format speific stuff with zeroes |
573 |
event.pEngineChannel = this; |
574 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
575 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
576 |
} |
577 |
} |
578 |
|
579 |
/** |
580 |
* Will be called by the MIDIIn Thread to signal the audio thread that a |
581 |
* continuous controller value has changed. This method is meant for real |
582 |
* time rendering, that is an event will immediately be created with the |
583 |
* current system time as time stamp. |
584 |
* |
585 |
* @param Controller - MIDI controller number of the occured control change |
586 |
* @param Value - value of the control change |
587 |
*/ |
588 |
void AbstractEngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, uint8_t MidiChannel) { |
589 |
if (pEngine) { |
590 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
591 |
LockGuard g; |
592 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
593 |
|
594 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
595 |
event.Type = Event::type_control_change; |
596 |
event.Param.CC.Controller = Controller; |
597 |
event.Param.CC.Value = Value; |
598 |
event.Param.CC.Channel = MidiChannel; |
599 |
memset(&event.Format, 0, sizeof(event.Format)); // init format speific stuff with zeroes |
600 |
event.pEngineChannel = this; |
601 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
602 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
603 |
} |
604 |
} |
605 |
|
606 |
/** |
607 |
* Will be called by the MIDIIn Thread to signal the audio thread that a |
608 |
* continuous controller value has changed. This method is meant for |
609 |
* offline rendering and / or for cases where the exact position of the |
610 |
* event in the current audio fragment is already known. |
611 |
* |
612 |
* @param Controller - MIDI controller number of the occured control change |
613 |
* @param Value - value of the control change |
614 |
* @param FragmentPos - sample point position in the current audio |
615 |
* fragment to which this event belongs to |
616 |
*/ |
617 |
void AbstractEngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) { |
618 |
if (FragmentPos < 0) { |
619 |
dmsg(1,("AbstractEngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!")); |
620 |
} |
621 |
else if (pEngine) { |
622 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
623 |
LockGuard g; |
624 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
625 |
|
626 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
627 |
event.Type = Event::type_control_change; |
628 |
event.Param.CC.Controller = Controller; |
629 |
event.Param.CC.Value = Value; |
630 |
event.Param.CC.Channel = MidiChannel; |
631 |
memset(&event.Format, 0, sizeof(event.Format)); // init format speific stuff with zeroes |
632 |
event.pEngineChannel = this; |
633 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
634 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
635 |
} |
636 |
} |
637 |
|
638 |
void AbstractEngineChannel::SendChannelPressure(uint8_t Value, uint8_t MidiChannel) { |
639 |
if (pEngine) { |
640 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
641 |
LockGuard g; |
642 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
643 |
|
644 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
645 |
event.Type = Event::type_channel_pressure; |
646 |
event.Param.ChannelPressure.Controller = CTRL_TABLE_IDX_AFTERTOUCH; // required for instrument scripts |
647 |
event.Param.ChannelPressure.Value = Value; |
648 |
event.Param.ChannelPressure.Channel = MidiChannel; |
649 |
memset(&event.Format, 0, sizeof(event.Format)); // init format speific stuff with zeroes |
650 |
event.pEngineChannel = this; |
651 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
652 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
653 |
} |
654 |
} |
655 |
|
656 |
void AbstractEngineChannel::SendChannelPressure(uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) { |
657 |
if (pEngine) { |
658 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
659 |
LockGuard g; |
660 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
661 |
|
662 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
663 |
event.Type = Event::type_channel_pressure; |
664 |
event.Param.ChannelPressure.Controller = CTRL_TABLE_IDX_AFTERTOUCH; // required for instrument scripts |
665 |
event.Param.ChannelPressure.Value = Value; |
666 |
event.Param.ChannelPressure.Channel = MidiChannel; |
667 |
memset(&event.Format, 0, sizeof(event.Format)); // init format speific stuff with zeroes |
668 |
event.pEngineChannel = this; |
669 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
670 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
671 |
} |
672 |
} |
673 |
|
674 |
void AbstractEngineChannel::SendPolyphonicKeyPressure(uint8_t Key, uint8_t Value, uint8_t MidiChannel) { |
675 |
if (pEngine) { |
676 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
677 |
LockGuard g; |
678 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
679 |
|
680 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
681 |
event.Type = Event::type_note_pressure; |
682 |
event.Param.NotePressure.Key = Key; |
683 |
event.Param.NotePressure.Value = Value; |
684 |
event.Param.NotePressure.Channel = MidiChannel; |
685 |
memset(&event.Format, 0, sizeof(event.Format)); // init format speific stuff with zeroes |
686 |
event.pEngineChannel = this; |
687 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
688 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
689 |
} |
690 |
} |
691 |
|
692 |
void AbstractEngineChannel::SendPolyphonicKeyPressure(uint8_t Key, uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) { |
693 |
if (pEngine) { |
694 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
695 |
LockGuard g; |
696 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
697 |
|
698 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
699 |
event.Type = Event::type_note_pressure; |
700 |
event.Param.NotePressure.Key = Key; |
701 |
event.Param.NotePressure.Value = Value; |
702 |
event.Param.NotePressure.Channel = MidiChannel; |
703 |
memset(&event.Format, 0, sizeof(event.Format)); // init format speific stuff with zeroes |
704 |
event.pEngineChannel = this; |
705 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
706 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
707 |
} |
708 |
} |
709 |
|
710 |
/** |
711 |
* Copy all events from the engine channel's input event queue buffer to |
712 |
* the internal event list. This will be done at the beginning of each |
713 |
* audio cycle (that is each RenderAudio() call) to distinguish all |
714 |
* events which have to be processed in the current audio cycle. Each |
715 |
* EngineChannel has it's own input event queue for the common channel |
716 |
* specific events (like NoteOn, NoteOff and ControlChange events). |
717 |
* Beside that, the engine also has a input event queue for global |
718 |
* events (usually SysEx messages). |
719 |
* |
720 |
* @param Samples - number of sample points to be processed in the |
721 |
* current audio cycle |
722 |
*/ |
723 |
void AbstractEngineChannel::ImportEvents(uint Samples) { |
724 |
// import events from pure software MIDI "devices" |
725 |
// (e.g. virtual keyboard in instrument editor) |
726 |
{ |
727 |
const uint8_t channel = MidiChannel() == midi_chan_all ? 0 : MidiChannel(); |
728 |
const int FragmentPos = 0; // randomly chosen, we don't care about jitter for virtual MIDI devices |
729 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
730 |
VirtualMidiDevice::event_t devEvent; // the event format we get from the virtual MIDI device |
731 |
// as we're going to (carefully) write some status to the |
732 |
// synchronized struct, we cast away the const |
733 |
ArrayList<VirtualMidiDevice*>& devices = |
734 |
const_cast<ArrayList<VirtualMidiDevice*>&>(virtualMidiDevicesReader_AudioThread.Lock()); |
735 |
// iterate through all virtual MIDI devices |
736 |
for (int i = 0; i < devices.size(); i++) { |
737 |
VirtualMidiDevice* pDev = devices[i]; |
738 |
// I think we can simply flush the whole FIFO(s), the user shouldn't be so fast ;-) |
739 |
while (pDev->GetMidiEventFromDevice(devEvent)) { |
740 |
switch (devEvent.Type) { |
741 |
case VirtualMidiDevice::EVENT_TYPE_NOTEON: |
742 |
event.Type = Event::type_note_on; |
743 |
event.Param.Note.Key = devEvent.Arg1; |
744 |
event.Param.Note.Velocity = devEvent.Arg2; |
745 |
event.Param.Note.Channel = channel; |
746 |
break; |
747 |
case VirtualMidiDevice::EVENT_TYPE_NOTEOFF: |
748 |
event.Type = Event::type_note_off; |
749 |
event.Param.Note.Key = devEvent.Arg1; |
750 |
event.Param.Note.Velocity = devEvent.Arg2; |
751 |
event.Param.Note.Channel = channel; |
752 |
break; |
753 |
case VirtualMidiDevice::EVENT_TYPE_CC: |
754 |
switch (devEvent.Arg1) { |
755 |
case 0: // bank select MSB ... |
756 |
SetMidiBankMsb(devEvent.Arg2); |
757 |
continue; // don't push this event into FIFO |
758 |
case 32: // bank select LSB ... |
759 |
SetMidiBankLsb(devEvent.Arg2); |
760 |
continue; // don't push this event into FIFO |
761 |
default: // regular MIDI CC ... |
762 |
event.Type = Event::type_control_change; |
763 |
event.Param.CC.Controller = devEvent.Arg1; |
764 |
event.Param.CC.Value = devEvent.Arg2; |
765 |
event.Param.CC.Channel = channel; |
766 |
} |
767 |
break; |
768 |
case VirtualMidiDevice::EVENT_TYPE_PITCHBEND: |
769 |
event.Type = Event::type_pitchbend; |
770 |
event.Param.Pitch.Pitch = int(devEvent.Arg2 << 7 | devEvent.Arg1) - 8192; |
771 |
event.Param.Pitch.Channel = channel; |
772 |
break; |
773 |
case VirtualMidiDevice::EVENT_TYPE_PROGRAM: |
774 |
SendProgramChange(devEvent.Arg1); |
775 |
continue; // don't push this event into FIFO |
776 |
default: |
777 |
std::cerr << "AbstractEngineChannel::ImportEvents() ERROR: unknown event type (" |
778 |
<< devEvent.Type << "). This is a bug!"; |
779 |
continue; |
780 |
} |
781 |
memset(&event.Format, 0, sizeof(event.Format)); // init format specific stuff with zeroes |
782 |
event.pEngineChannel = this; |
783 |
// copy event to internal event list |
784 |
if (pEvents->poolIsEmpty()) { |
785 |
dmsg(1,("Event pool emtpy!\n")); |
786 |
goto exitVirtualDevicesLoop; |
787 |
} |
788 |
*pEvents->allocAppend() = event; |
789 |
} |
790 |
} |
791 |
} |
792 |
exitVirtualDevicesLoop: |
793 |
virtualMidiDevicesReader_AudioThread.Unlock(); |
794 |
|
795 |
// import events from the regular MIDI devices |
796 |
RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader(); |
797 |
Event* pEvent; |
798 |
while (true) { |
799 |
// get next event from input event queue |
800 |
if (!(pEvent = eventQueueReader.pop())) break; |
801 |
// if younger event reached, ignore that and all subsequent ones for now |
802 |
if (pEvent->FragmentPos() >= Samples) { |
803 |
eventQueueReader--; |
804 |
dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples)); |
805 |
pEvent->ResetFragmentPos(); |
806 |
break; |
807 |
} |
808 |
// copy event to internal event list |
809 |
if (pEvents->poolIsEmpty()) { |
810 |
dmsg(1,("Event pool emtpy!\n")); |
811 |
break; |
812 |
} |
813 |
*pEvents->allocAppend() = *pEvent; |
814 |
} |
815 |
eventQueueReader.free(); // free all copied events from input queue |
816 |
} |
817 |
|
818 |
/** |
819 |
* Called by real-time instrument script functions to schedule a new event |
820 |
* @a delay microseconds in future. |
821 |
* |
822 |
* @b IMPORTANT: for the supplied @a delay to be scheduled correctly, the |
823 |
* passed @a pEvent must be assigned a valid fragment time within the |
824 |
* current audio fragment boundaries. That fragment time will be used by |
825 |
* this method as basis for interpreting what "now" acutally is, and thus |
826 |
* it will be used as basis for calculating the precise scheduling time |
827 |
* for @a delay. The easiest way to achieve this is by copying a recent |
828 |
* event which happened within the current audio fragment cycle: i.e. the |
829 |
* original event which caused calling this method here. |
830 |
* |
831 |
* @param pEvent - event to be scheduled in future (event data will be copied) |
832 |
* @param delay - amount of microseconds in future (from now) when event shall be processed |
833 |
* @returns unique event ID of scheduled new event, or a negative number on error |
834 |
*/ |
835 |
int AbstractEngineChannel::ScheduleEventMicroSec(const Event* pEvent, int delay) { |
836 |
dmsg(3,("AbstractEngineChannel::ScheduleEventMicroSec(Event.Type=%d,delay=%d)\n", pEvent->Type, delay)); |
837 |
RTList<Event>::Iterator itEvent = pEvents->allocAppend(); |
838 |
if (!itEvent) { |
839 |
dmsg(1,("AbstractEngineChannel::ScheduleEventMicroSec(): Event pool emtpy!\n")); |
840 |
return -1; |
841 |
} |
842 |
RTList<ScheduledEvent>::Iterator itNode = delayedEvents.schedulerNodes.allocAppend(); |
843 |
if (!itNode) { // scheduler node pool empty ... |
844 |
dmsg(1,("AbstractEngineChannel::ScheduleEventMicroSec(): ScheduledEvent pool empty!\n")); |
845 |
pEvents->free(itEvent); |
846 |
return -1; |
847 |
} |
848 |
// copy passed event |
849 |
*itEvent = *pEvent; |
850 |
// move copied event to list of delayed events |
851 |
itEvent = itEvent.moveToEndOf(delayedEvents.pList); |
852 |
// connect scheduler node with the copied event |
853 |
itNode->itEvent = itEvent; |
854 |
// add entry to time sorted scheduler queue for copied event |
855 |
pEngine->pEventGenerator->scheduleAheadMicroSec( |
856 |
delayedEvents.queue, *itNode, itEvent->FragmentPos(), delay |
857 |
); |
858 |
//dmsg(5,("ScheduledEvent queue size: %d\n", delayedEvents.queue.size())); |
859 |
return pEvents->getID(itEvent); |
860 |
} |
861 |
|
862 |
/** |
863 |
* Called by real-time instrument script functions to ignore the event |
864 |
* reflected by given event ID. The event will be freed immediately to its |
865 |
* pool and cannot be dereferenced by its old ID anymore. Even if its |
866 |
* allocated back from the Pool later on, it will have a different ID. |
867 |
*/ |
868 |
void AbstractEngineChannel::IgnoreEvent(int id) { |
869 |
RTList<Event>::Iterator it = pEvents->fromID(id); |
870 |
if (it) pEvents->free(it); |
871 |
} |
872 |
|
873 |
FxSend* AbstractEngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) { |
874 |
if (pEngine) pEngine->DisableAndLock(); |
875 |
FxSend* pFxSend = new FxSend(this, MidiCtrl, Name); |
876 |
if (fxSends.empty()) { |
877 |
if (pEngine && pEngine->pAudioOutputDevice) { |
878 |
AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice; |
879 |
// create local render buffers |
880 |
pChannelLeft = new AudioChannel(0, pDevice->MaxSamplesPerCycle()); |
881 |
pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle()); |
882 |
} else { |
883 |
// postpone local render buffer creation until audio device is assigned |
884 |
pChannelLeft = NULL; |
885 |
pChannelRight = NULL; |
886 |
} |
887 |
} |
888 |
fxSends.push_back(pFxSend); |
889 |
if (pEngine) pEngine->Enable(); |
890 |
fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount()); |
891 |
|
892 |
return pFxSend; |
893 |
} |
894 |
|
895 |
FxSend* AbstractEngineChannel::GetFxSend(uint FxSendIndex) { |
896 |
return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL; |
897 |
} |
898 |
|
899 |
uint AbstractEngineChannel::GetFxSendCount() { |
900 |
return fxSends.size(); |
901 |
} |
902 |
|
903 |
void AbstractEngineChannel::RemoveFxSend(FxSend* pFxSend) { |
904 |
if (pEngine) pEngine->DisableAndLock(); |
905 |
for ( |
906 |
std::vector<FxSend*>::iterator iter = fxSends.begin(); |
907 |
iter != fxSends.end(); iter++ |
908 |
) { |
909 |
if (*iter == pFxSend) { |
910 |
delete pFxSend; |
911 |
fxSends.erase(iter); |
912 |
if (fxSends.empty()) { |
913 |
// destroy local render buffers |
914 |
if (pChannelLeft) delete pChannelLeft; |
915 |
if (pChannelRight) delete pChannelRight; |
916 |
// fallback to render directly into AudioOutputDevice's buffers |
917 |
if (pEngine && pEngine->pAudioOutputDevice) { |
918 |
pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft); |
919 |
pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight); |
920 |
} else { // we update the pointers later |
921 |
pChannelLeft = NULL; |
922 |
pChannelRight = NULL; |
923 |
} |
924 |
} |
925 |
break; |
926 |
} |
927 |
} |
928 |
if (pEngine) pEngine->Enable(); |
929 |
fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount()); |
930 |
} |
931 |
|
932 |
void AbstractEngineChannel::RemoveAllFxSends() { |
933 |
if (pEngine) pEngine->DisableAndLock(); |
934 |
if (!fxSends.empty()) { // free local render buffers |
935 |
if (pChannelLeft) { |
936 |
delete pChannelLeft; |
937 |
if (pEngine && pEngine->pAudioOutputDevice) { |
938 |
// fallback to render directly to the AudioOutputDevice's buffer |
939 |
pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft); |
940 |
} else pChannelLeft = NULL; |
941 |
} |
942 |
if (pChannelRight) { |
943 |
delete pChannelRight; |
944 |
if (pEngine && pEngine->pAudioOutputDevice) { |
945 |
// fallback to render directly to the AudioOutputDevice's buffer |
946 |
pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight); |
947 |
} else pChannelRight = NULL; |
948 |
} |
949 |
} |
950 |
for (int i = 0; i < fxSends.size(); i++) delete fxSends[i]; |
951 |
fxSends.clear(); |
952 |
if (pEngine) pEngine->Enable(); |
953 |
} |
954 |
|
955 |
/** |
956 |
* Add a group number to the set of key groups. Should be called |
957 |
* when an instrument is loaded to make sure there are event lists |
958 |
* for all key groups. |
959 |
*/ |
960 |
void AbstractEngineChannel::AddGroup(uint group) { |
961 |
if (group) { |
962 |
std::pair<ActiveKeyGroupMap::iterator, bool> p = |
963 |
ActiveKeyGroups.insert(ActiveKeyGroupMap::value_type(group, 0)); |
964 |
if (p.second) { |
965 |
// If the engine channel is pending deletion (see bug |
966 |
// #113), pEngine will be null, so we can't use |
967 |
// pEngine->pEventPool here. Instead we're using a |
968 |
// specialized RTList that allows specifying the pool |
969 |
// later. |
970 |
(*p.first).second = new LazyList<Event>; |
971 |
} |
972 |
} |
973 |
} |
974 |
|
975 |
/** |
976 |
* Handle key group (a.k.a. exclusive group) conflicts. |
977 |
*/ |
978 |
void AbstractEngineChannel::HandleKeyGroupConflicts(uint KeyGroup, Pool<Event>::Iterator& itNoteOnEvent) { |
979 |
dmsg(4,("HandelKeyGroupConflicts KeyGroup=%d\n", KeyGroup)); |
980 |
if (KeyGroup) { |
981 |
// send a release event to all active voices in the group |
982 |
RTList<Event>::Iterator itEvent = ActiveKeyGroups[KeyGroup]->allocAppend(pEngine->pEventPool); |
983 |
*itEvent = *itNoteOnEvent; |
984 |
} |
985 |
} |
986 |
|
987 |
/** |
988 |
* Empty the lists of group events. Should be called from the |
989 |
* audio thread, after all voices have been rendered. |
990 |
*/ |
991 |
void AbstractEngineChannel::ClearGroupEventLists() { |
992 |
for (ActiveKeyGroupMap::iterator iter = ActiveKeyGroups.begin(); |
993 |
iter != ActiveKeyGroups.end(); iter++) { |
994 |
if (iter->second) { |
995 |
iter->second->clear(); |
996 |
} else { |
997 |
dmsg(1,("EngineChannel: group event list was NULL")); |
998 |
} |
999 |
} |
1000 |
} |
1001 |
|
1002 |
/** |
1003 |
* Remove all lists with group events. |
1004 |
*/ |
1005 |
void AbstractEngineChannel::DeleteGroupEventLists() { |
1006 |
for (ActiveKeyGroupMap::iterator iter = ActiveKeyGroups.begin(); |
1007 |
iter != ActiveKeyGroups.end(); iter++) { |
1008 |
delete iter->second; |
1009 |
} |
1010 |
ActiveKeyGroups.clear(); |
1011 |
} |
1012 |
|
1013 |
} // namespace LinuxSampler |