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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) 2013-2014 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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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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pScriptEvents = NULL; |
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} |
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|
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AbstractEngineChannel::~AbstractEngineChannel() { |
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unloadCurrentInstrumentScript(); |
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if (pScriptEvents) delete pScriptEvents; |
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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(); |
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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() { |
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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 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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/** |
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* Loads the real-time instrument script given by @a text on this engine |
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* channel. A resource manager is used to allocate and share equivalent |
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* scripts on multiple engine channels. |
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* |
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* @param text - source code of script |
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*/ |
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void AbstractEngineChannel::loadInstrumentScript(const String& text) { |
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dmsg(1,("Loading real-time instrument script ... ")); |
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|
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// hand back old script reference and VM execution contexts |
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// (if not done already) |
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unloadCurrentInstrumentScript(); |
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|
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// get new script reference |
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script.parserContext = pEngine->scripts.Borrow(text, this); |
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if (!script.parserContext->errors().empty()) { |
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std::vector<ParserIssue> errors = script.parserContext->errors(); |
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std::cerr << "[ScriptVM] Could not load instrument script, there were " |
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<< errors.size() << " parser errors:\n"; |
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for (int i = 0; i < errors.size(); ++i) |
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errors[i].dump(); |
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return; // stop here if there were any parser errors |
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} |
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|
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script.handlerInit = script.parserContext->eventHandlerByName("init"); |
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script.handlerNote = script.parserContext->eventHandlerByName("note"); |
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script.handlerRelease = script.parserContext->eventHandlerByName("release"); |
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script.handlerController = script.parserContext->eventHandlerByName("controller"); |
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script.bHasValidScript = |
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script.handlerInit || script.handlerNote || script.handlerRelease || |
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script.handlerController; |
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|
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// amount of script handlers each script event has to execute |
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int handlerExecCount = 0; |
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if (script.handlerInit) handlerExecCount++; // "init" handler is always executed before the actual event handler |
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if (script.handlerNote || script.handlerRelease || script.handlerController) // only one of these are executed after "init" handler |
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handlerExecCount++; |
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|
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// create script event pool (if it doesn't exist already) |
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if (!pScriptEvents) |
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pScriptEvents = new Pool<ScriptEvent>(CONFIG_MAX_EVENTS_PER_FRAGMENT); |
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|
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// create new VM execution contexts for new script |
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while (!pScriptEvents->poolIsEmpty()) { |
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RTList<ScriptEvent>::Iterator it = pScriptEvents->allocAppend(); |
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it->execCtx = pEngine->pScriptVM->createExecContext( |
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script.parserContext |
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); |
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it->handlers = new VMEventHandler*[handlerExecCount+1]; |
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} |
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pScriptEvents->clear(); |
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|
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dmsg(1,("Done\n")); |
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} |
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|
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/** |
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* Unloads the currently used real-time instrument script on this sampler |
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* channel. A resource manager is used to share equivalent scripts among |
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* multiple sampler channels, and to deallocate the parsed script once not |
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* used on any engine channel anymore. |
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*/ |
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void AbstractEngineChannel::unloadCurrentInstrumentScript() { |
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if (script.parserContext) |
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dmsg(1,("Unloading current instrument script.")); |
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|
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// free allocated VM execution contexts |
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if (pScriptEvents) { |
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pScriptEvents->clear(); |
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while (!pScriptEvents->poolIsEmpty()) { |
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RTList<ScriptEvent>::Iterator it = pScriptEvents->allocAppend(); |
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if (it->execCtx) { |
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// free VM execution context object |
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delete it->execCtx; |
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it->execCtx = NULL; |
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// free C array of handler pointers |
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delete [] it->handlers; |
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} |
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} |
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pScriptEvents->clear(); |
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} |
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// hand back VM representation of script |
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if (script.parserContext) { |
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pEngine->scripts.HandBack(script.parserContext, this); |
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script.parserContext = NULL; |
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script.handlerInit = NULL; |
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script.handlerNote = NULL; |
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script.handlerRelease = NULL; |
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script.handlerController = NULL; |
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} |
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script.bHasValidScript = false; |
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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); |
447 |
} |
448 |
{ |
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ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig(); |
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devices.remove(pDevice); |
451 |
} |
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} |
453 |
|
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/** |
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* 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 real time rendering, |
457 |
* that is an event will immediately be created with the current system |
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* time as time stamp. |
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 |
*/ |
463 |
void AbstractEngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel) { |
464 |
if (pEngine) { |
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// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
466 |
LockGuard g; |
467 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
468 |
|
469 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
470 |
event.Type = Event::type_note_on; |
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event.Param.Note.Key = Key; |
472 |
event.Param.Note.Velocity = Velocity; |
473 |
event.Param.Note.Channel = MidiChannel; |
474 |
event.pEngineChannel = this; |
475 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
476 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
477 |
// inform connected virtual MIDI devices if any ... |
478 |
// (e.g. virtual MIDI keyboard in instrument editor(s)) |
479 |
ArrayList<VirtualMidiDevice*>& devices = |
480 |
const_cast<ArrayList<VirtualMidiDevice*>&>( |
481 |
virtualMidiDevicesReader_MidiThread.Lock() |
482 |
); |
483 |
for (int i = 0; i < devices.size(); i++) { |
484 |
devices[i]->SendNoteOnToDevice(Key, Velocity); |
485 |
} |
486 |
virtualMidiDevicesReader_MidiThread.Unlock(); |
487 |
} |
488 |
} |
489 |
|
490 |
/** |
491 |
* Will be called by the MIDIIn Thread to let the audio thread trigger a new |
492 |
* voice for the given key. This method is meant for offline rendering |
493 |
* and / or for cases where the exact position of the event in the current |
494 |
* audio fragment is already known. |
495 |
* |
496 |
* @param Key - MIDI key number of the triggered key |
497 |
* @param Velocity - MIDI velocity value of the triggered key |
498 |
* @param FragmentPos - sample point position in the current audio |
499 |
* fragment to which this event belongs to |
500 |
*/ |
501 |
void AbstractEngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel, int32_t FragmentPos) { |
502 |
if (FragmentPos < 0) { |
503 |
dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!")); |
504 |
} |
505 |
else if (pEngine) { |
506 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
507 |
LockGuard g; |
508 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
509 |
|
510 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
511 |
event.Type = Event::type_note_on; |
512 |
event.Param.Note.Key = Key; |
513 |
event.Param.Note.Velocity = Velocity; |
514 |
event.Param.Note.Channel = MidiChannel; |
515 |
event.pEngineChannel = this; |
516 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
517 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
518 |
// inform connected virtual MIDI devices if any ... |
519 |
// (e.g. virtual MIDI keyboard in instrument editor(s)) |
520 |
ArrayList<VirtualMidiDevice*>& devices = |
521 |
const_cast<ArrayList<VirtualMidiDevice*>&>( |
522 |
virtualMidiDevicesReader_MidiThread.Lock() |
523 |
); |
524 |
for (int i = 0; i < devices.size(); i++) { |
525 |
devices[i]->SendNoteOnToDevice(Key, Velocity); |
526 |
} |
527 |
virtualMidiDevicesReader_MidiThread.Unlock(); |
528 |
} |
529 |
} |
530 |
|
531 |
/** |
532 |
* Will be called by the MIDIIn Thread to signal the audio thread to release |
533 |
* voice(s) on the given key. This method is meant for real time rendering, |
534 |
* that is an event will immediately be created with the current system |
535 |
* time as time stamp. |
536 |
* |
537 |
* @param Key - MIDI key number of the released key |
538 |
* @param Velocity - MIDI release velocity value of the released key |
539 |
*/ |
540 |
void AbstractEngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel) { |
541 |
if (pEngine) { |
542 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
543 |
LockGuard g; |
544 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
545 |
|
546 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
547 |
event.Type = Event::type_note_off; |
548 |
event.Param.Note.Key = Key; |
549 |
event.Param.Note.Velocity = Velocity; |
550 |
event.Param.Note.Channel = MidiChannel; |
551 |
event.pEngineChannel = this; |
552 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
553 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
554 |
// inform connected virtual MIDI devices if any ... |
555 |
// (e.g. virtual MIDI keyboard in instrument editor(s)) |
556 |
ArrayList<VirtualMidiDevice*>& devices = |
557 |
const_cast<ArrayList<VirtualMidiDevice*>&>( |
558 |
virtualMidiDevicesReader_MidiThread.Lock() |
559 |
); |
560 |
for (int i = 0; i < devices.size(); i++) { |
561 |
devices[i]->SendNoteOffToDevice(Key, Velocity); |
562 |
} |
563 |
virtualMidiDevicesReader_MidiThread.Unlock(); |
564 |
} |
565 |
} |
566 |
|
567 |
/** |
568 |
* Will be called by the MIDIIn Thread to signal the audio thread to release |
569 |
* voice(s) on the given key. This method is meant for offline rendering |
570 |
* and / or for cases where the exact position of the event in the current |
571 |
* audio fragment is already known. |
572 |
* |
573 |
* @param Key - MIDI key number of the released key |
574 |
* @param Velocity - MIDI release velocity value of the released key |
575 |
* @param FragmentPos - sample point position in the current audio |
576 |
* fragment to which this event belongs to |
577 |
*/ |
578 |
void AbstractEngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel, int32_t FragmentPos) { |
579 |
if (FragmentPos < 0) { |
580 |
dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!")); |
581 |
} |
582 |
else if (pEngine) { |
583 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
584 |
LockGuard g; |
585 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
586 |
|
587 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
588 |
event.Type = Event::type_note_off; |
589 |
event.Param.Note.Key = Key; |
590 |
event.Param.Note.Velocity = Velocity; |
591 |
event.Param.Note.Channel = MidiChannel; |
592 |
event.pEngineChannel = this; |
593 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
594 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
595 |
// inform connected virtual MIDI devices if any ... |
596 |
// (e.g. virtual MIDI keyboard in instrument editor(s)) |
597 |
ArrayList<VirtualMidiDevice*>& devices = |
598 |
const_cast<ArrayList<VirtualMidiDevice*>&>( |
599 |
virtualMidiDevicesReader_MidiThread.Lock() |
600 |
); |
601 |
for (int i = 0; i < devices.size(); i++) { |
602 |
devices[i]->SendNoteOffToDevice(Key, Velocity); |
603 |
} |
604 |
virtualMidiDevicesReader_MidiThread.Unlock(); |
605 |
} |
606 |
} |
607 |
|
608 |
/** |
609 |
* Will be called by the MIDIIn Thread to signal the audio thread to change |
610 |
* the pitch value for all voices. This method is meant for real time |
611 |
* rendering, that is an event will immediately be created with the |
612 |
* current system time as time stamp. |
613 |
* |
614 |
* @param Pitch - MIDI pitch value (-8192 ... +8191) |
615 |
*/ |
616 |
void AbstractEngineChannel::SendPitchbend(int Pitch, uint8_t MidiChannel) { |
617 |
if (pEngine) { |
618 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
619 |
LockGuard g; |
620 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
621 |
|
622 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
623 |
event.Type = Event::type_pitchbend; |
624 |
event.Param.Pitch.Pitch = Pitch; |
625 |
event.Param.Pitch.Channel = MidiChannel; |
626 |
event.pEngineChannel = this; |
627 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
628 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
629 |
} |
630 |
} |
631 |
|
632 |
/** |
633 |
* Will be called by the MIDIIn Thread to signal the audio thread to change |
634 |
* the pitch value for all voices. This method is meant for offline |
635 |
* rendering and / or for cases where the exact position of the event in |
636 |
* the current audio fragment is already known. |
637 |
* |
638 |
* @param Pitch - MIDI pitch value (-8192 ... +8191) |
639 |
* @param FragmentPos - sample point position in the current audio |
640 |
* fragment to which this event belongs to |
641 |
*/ |
642 |
void AbstractEngineChannel::SendPitchbend(int Pitch, uint8_t MidiChannel, int32_t FragmentPos) { |
643 |
if (FragmentPos < 0) { |
644 |
dmsg(1,("AbstractEngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!")); |
645 |
} |
646 |
else if (pEngine) { |
647 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
648 |
LockGuard g; |
649 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
650 |
|
651 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
652 |
event.Type = Event::type_pitchbend; |
653 |
event.Param.Pitch.Pitch = Pitch; |
654 |
event.Param.Pitch.Channel = MidiChannel; |
655 |
event.pEngineChannel = this; |
656 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
657 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
658 |
} |
659 |
} |
660 |
|
661 |
/** |
662 |
* Will be called by the MIDIIn Thread to signal the audio thread that a |
663 |
* continuous controller value has changed. This method is meant for real |
664 |
* time rendering, that is an event will immediately be created with the |
665 |
* current system time as time stamp. |
666 |
* |
667 |
* @param Controller - MIDI controller number of the occured control change |
668 |
* @param Value - value of the control change |
669 |
*/ |
670 |
void AbstractEngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, uint8_t MidiChannel) { |
671 |
if (pEngine) { |
672 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
673 |
LockGuard g; |
674 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
675 |
|
676 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
677 |
event.Type = Event::type_control_change; |
678 |
event.Param.CC.Controller = Controller; |
679 |
event.Param.CC.Value = Value; |
680 |
event.Param.CC.Channel = MidiChannel; |
681 |
event.pEngineChannel = this; |
682 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
683 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
684 |
} |
685 |
} |
686 |
|
687 |
/** |
688 |
* Will be called by the MIDIIn Thread to signal the audio thread that a |
689 |
* continuous controller value has changed. This method is meant for |
690 |
* offline rendering and / or for cases where the exact position of the |
691 |
* event in the current audio fragment is already known. |
692 |
* |
693 |
* @param Controller - MIDI controller number of the occured control change |
694 |
* @param Value - value of the control change |
695 |
* @param FragmentPos - sample point position in the current audio |
696 |
* fragment to which this event belongs to |
697 |
*/ |
698 |
void AbstractEngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) { |
699 |
if (FragmentPos < 0) { |
700 |
dmsg(1,("AbstractEngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!")); |
701 |
} |
702 |
else if (pEngine) { |
703 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
704 |
LockGuard g; |
705 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
706 |
|
707 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
708 |
event.Type = Event::type_control_change; |
709 |
event.Param.CC.Controller = Controller; |
710 |
event.Param.CC.Value = Value; |
711 |
event.Param.CC.Channel = MidiChannel; |
712 |
event.pEngineChannel = this; |
713 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
714 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
715 |
} |
716 |
} |
717 |
|
718 |
void AbstractEngineChannel::SendChannelPressure(uint8_t Value, uint8_t MidiChannel) { |
719 |
if (pEngine) { |
720 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
721 |
LockGuard g; |
722 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
723 |
|
724 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
725 |
event.Type = Event::type_channel_pressure; |
726 |
event.Param.ChannelPressure.Value = Value; |
727 |
event.Param.ChannelPressure.Channel = MidiChannel; |
728 |
event.pEngineChannel = this; |
729 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
730 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
731 |
} |
732 |
} |
733 |
|
734 |
void AbstractEngineChannel::SendChannelPressure(uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) { |
735 |
if (pEngine) { |
736 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
737 |
LockGuard g; |
738 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
739 |
|
740 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
741 |
event.Type = Event::type_channel_pressure; |
742 |
event.Param.ChannelPressure.Value = Value; |
743 |
event.Param.ChannelPressure.Channel = MidiChannel; |
744 |
event.pEngineChannel = this; |
745 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
746 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
747 |
} |
748 |
} |
749 |
|
750 |
void AbstractEngineChannel::SendPolyphonicKeyPressure(uint8_t Key, uint8_t Value, uint8_t MidiChannel) { |
751 |
if (pEngine) { |
752 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
753 |
LockGuard g; |
754 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
755 |
|
756 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
757 |
event.Type = Event::type_note_pressure; |
758 |
event.Param.NotePressure.Key = Key; |
759 |
event.Param.NotePressure.Value = Value; |
760 |
event.Param.NotePressure.Channel = MidiChannel; |
761 |
event.pEngineChannel = this; |
762 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
763 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
764 |
} |
765 |
} |
766 |
|
767 |
void AbstractEngineChannel::SendPolyphonicKeyPressure(uint8_t Key, uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) { |
768 |
if (pEngine) { |
769 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
770 |
LockGuard g; |
771 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
772 |
|
773 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
774 |
event.Type = Event::type_note_pressure; |
775 |
event.Param.NotePressure.Key = Key; |
776 |
event.Param.NotePressure.Value = Value; |
777 |
event.Param.NotePressure.Channel = MidiChannel; |
778 |
event.pEngineChannel = this; |
779 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
780 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
781 |
} |
782 |
} |
783 |
|
784 |
/** |
785 |
* Copy all events from the engine channel's input event queue buffer to |
786 |
* the internal event list. This will be done at the beginning of each |
787 |
* audio cycle (that is each RenderAudio() call) to distinguish all |
788 |
* events which have to be processed in the current audio cycle. Each |
789 |
* EngineChannel has it's own input event queue for the common channel |
790 |
* specific events (like NoteOn, NoteOff and ControlChange events). |
791 |
* Beside that, the engine also has a input event queue for global |
792 |
* events (usually SysEx messages). |
793 |
* |
794 |
* @param Samples - number of sample points to be processed in the |
795 |
* current audio cycle |
796 |
*/ |
797 |
void AbstractEngineChannel::ImportEvents(uint Samples) { |
798 |
// import events from pure software MIDI "devices" |
799 |
// (e.g. virtual keyboard in instrument editor) |
800 |
{ |
801 |
const uint8_t channel = MidiChannel() == midi_chan_all ? 0 : MidiChannel(); |
802 |
const int FragmentPos = 0; // randomly chosen, we don't care about jitter for virtual MIDI devices |
803 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
804 |
VirtualMidiDevice::event_t devEvent; // the event format we get from the virtual MIDI device |
805 |
// as we're going to (carefully) write some status to the |
806 |
// synchronized struct, we cast away the const |
807 |
ArrayList<VirtualMidiDevice*>& devices = |
808 |
const_cast<ArrayList<VirtualMidiDevice*>&>(virtualMidiDevicesReader_AudioThread.Lock()); |
809 |
// iterate through all virtual MIDI devices |
810 |
for (int i = 0; i < devices.size(); i++) { |
811 |
VirtualMidiDevice* pDev = devices[i]; |
812 |
// I think we can simply flush the whole FIFO(s), the user shouldn't be so fast ;-) |
813 |
while (pDev->GetMidiEventFromDevice(devEvent)) { |
814 |
switch (devEvent.Type) { |
815 |
case VirtualMidiDevice::EVENT_TYPE_NOTEON: |
816 |
event.Type = Event::type_note_on; |
817 |
event.Param.Note.Key = devEvent.Arg1; |
818 |
event.Param.Note.Velocity = devEvent.Arg2; |
819 |
event.Param.Note.Channel = channel; |
820 |
break; |
821 |
case VirtualMidiDevice::EVENT_TYPE_NOTEOFF: |
822 |
event.Type = Event::type_note_off; |
823 |
event.Param.Note.Key = devEvent.Arg1; |
824 |
event.Param.Note.Velocity = devEvent.Arg2; |
825 |
event.Param.Note.Channel = channel; |
826 |
break; |
827 |
case VirtualMidiDevice::EVENT_TYPE_CC: |
828 |
switch (devEvent.Arg1) { |
829 |
case 0: // bank select MSB ... |
830 |
SetMidiBankMsb(devEvent.Arg2); |
831 |
continue; // don't push this event into FIFO |
832 |
case 32: // bank select LSB ... |
833 |
SetMidiBankLsb(devEvent.Arg2); |
834 |
continue; // don't push this event into FIFO |
835 |
default: // regular MIDI CC ... |
836 |
event.Type = Event::type_control_change; |
837 |
event.Param.CC.Controller = devEvent.Arg1; |
838 |
event.Param.CC.Value = devEvent.Arg2; |
839 |
event.Param.CC.Channel = channel; |
840 |
} |
841 |
break; |
842 |
case VirtualMidiDevice::EVENT_TYPE_PITCHBEND: |
843 |
event.Type = Event::type_pitchbend; |
844 |
event.Param.Pitch.Pitch = int(devEvent.Arg2 << 7 | devEvent.Arg1) - 8192; |
845 |
event.Param.Pitch.Channel = channel; |
846 |
break; |
847 |
case VirtualMidiDevice::EVENT_TYPE_PROGRAM: |
848 |
SendProgramChange(devEvent.Arg1); |
849 |
continue; // don't push this event into FIFO |
850 |
default: |
851 |
std::cerr << "AbstractEngineChannel::ImportEvents() ERROR: unknown event type (" |
852 |
<< devEvent.Type << "). This is a bug!"; |
853 |
continue; |
854 |
} |
855 |
event.pEngineChannel = this; |
856 |
// copy event to internal event list |
857 |
if (pEvents->poolIsEmpty()) { |
858 |
dmsg(1,("Event pool emtpy!\n")); |
859 |
goto exitVirtualDevicesLoop; |
860 |
} |
861 |
*pEvents->allocAppend() = event; |
862 |
} |
863 |
} |
864 |
} |
865 |
exitVirtualDevicesLoop: |
866 |
virtualMidiDevicesReader_AudioThread.Unlock(); |
867 |
|
868 |
// import events from the regular MIDI devices |
869 |
RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader(); |
870 |
Event* pEvent; |
871 |
while (true) { |
872 |
// get next event from input event queue |
873 |
if (!(pEvent = eventQueueReader.pop())) break; |
874 |
// if younger event reached, ignore that and all subsequent ones for now |
875 |
if (pEvent->FragmentPos() >= Samples) { |
876 |
eventQueueReader--; |
877 |
dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples)); |
878 |
pEvent->ResetFragmentPos(); |
879 |
break; |
880 |
} |
881 |
// copy event to internal event list |
882 |
if (pEvents->poolIsEmpty()) { |
883 |
dmsg(1,("Event pool emtpy!\n")); |
884 |
break; |
885 |
} |
886 |
*pEvents->allocAppend() = *pEvent; |
887 |
} |
888 |
eventQueueReader.free(); // free all copied events from input queue |
889 |
} |
890 |
|
891 |
/** |
892 |
* Called by real-time instrument script functions to schedule a new event |
893 |
* somewhere in future. |
894 |
* |
895 |
* @returns unique event ID of scheduled new event |
896 |
*/ |
897 |
int AbstractEngineChannel::ScheduleEvent(const Event* pEvent, int delay) { //TODO: delay not implemented yet |
898 |
// since delay is not implemented yet, we simply add the new event |
899 |
// to the event list of the current audio fragmet cycle for now |
900 |
RTList<Event>::Iterator itEvent = pEvents->allocAppend(); |
901 |
if (itEvent) *itEvent = *pEvent; // copy event |
902 |
return pEvents->getID(itEvent); |
903 |
} |
904 |
|
905 |
/** |
906 |
* Called by real-time instrument script functions to ignore the event |
907 |
* reflected by given event ID. The event will be freed immediately to its |
908 |
* pool and cannot be dereferenced by its old ID anymore. Even if its |
909 |
* allocated back from the Pool later on, it will have a different ID. |
910 |
*/ |
911 |
void AbstractEngineChannel::IgnoreEvent(int id) { |
912 |
RTList<Event>::Iterator it = pEvents->fromID(id); |
913 |
if (it) pEvents->free(it); |
914 |
} |
915 |
|
916 |
FxSend* AbstractEngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) { |
917 |
if (pEngine) pEngine->DisableAndLock(); |
918 |
FxSend* pFxSend = new FxSend(this, MidiCtrl, Name); |
919 |
if (fxSends.empty()) { |
920 |
if (pEngine && pEngine->pAudioOutputDevice) { |
921 |
AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice; |
922 |
// create local render buffers |
923 |
pChannelLeft = new AudioChannel(0, pDevice->MaxSamplesPerCycle()); |
924 |
pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle()); |
925 |
} else { |
926 |
// postpone local render buffer creation until audio device is assigned |
927 |
pChannelLeft = NULL; |
928 |
pChannelRight = NULL; |
929 |
} |
930 |
} |
931 |
fxSends.push_back(pFxSend); |
932 |
if (pEngine) pEngine->Enable(); |
933 |
fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount()); |
934 |
|
935 |
return pFxSend; |
936 |
} |
937 |
|
938 |
FxSend* AbstractEngineChannel::GetFxSend(uint FxSendIndex) { |
939 |
return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL; |
940 |
} |
941 |
|
942 |
uint AbstractEngineChannel::GetFxSendCount() { |
943 |
return fxSends.size(); |
944 |
} |
945 |
|
946 |
void AbstractEngineChannel::RemoveFxSend(FxSend* pFxSend) { |
947 |
if (pEngine) pEngine->DisableAndLock(); |
948 |
for ( |
949 |
std::vector<FxSend*>::iterator iter = fxSends.begin(); |
950 |
iter != fxSends.end(); iter++ |
951 |
) { |
952 |
if (*iter == pFxSend) { |
953 |
delete pFxSend; |
954 |
fxSends.erase(iter); |
955 |
if (fxSends.empty()) { |
956 |
// destroy local render buffers |
957 |
if (pChannelLeft) delete pChannelLeft; |
958 |
if (pChannelRight) delete pChannelRight; |
959 |
// fallback to render directly into AudioOutputDevice's buffers |
960 |
if (pEngine && pEngine->pAudioOutputDevice) { |
961 |
pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft); |
962 |
pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight); |
963 |
} else { // we update the pointers later |
964 |
pChannelLeft = NULL; |
965 |
pChannelRight = NULL; |
966 |
} |
967 |
} |
968 |
break; |
969 |
} |
970 |
} |
971 |
if (pEngine) pEngine->Enable(); |
972 |
fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount()); |
973 |
} |
974 |
|
975 |
void AbstractEngineChannel::RemoveAllFxSends() { |
976 |
if (pEngine) pEngine->DisableAndLock(); |
977 |
if (!fxSends.empty()) { // free local render buffers |
978 |
if (pChannelLeft) { |
979 |
delete pChannelLeft; |
980 |
if (pEngine && pEngine->pAudioOutputDevice) { |
981 |
// fallback to render directly to the AudioOutputDevice's buffer |
982 |
pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft); |
983 |
} else pChannelLeft = NULL; |
984 |
} |
985 |
if (pChannelRight) { |
986 |
delete pChannelRight; |
987 |
if (pEngine && pEngine->pAudioOutputDevice) { |
988 |
// fallback to render directly to the AudioOutputDevice's buffer |
989 |
pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight); |
990 |
} else pChannelRight = NULL; |
991 |
} |
992 |
} |
993 |
for (int i = 0; i < fxSends.size(); i++) delete fxSends[i]; |
994 |
fxSends.clear(); |
995 |
if (pEngine) pEngine->Enable(); |
996 |
} |
997 |
|
998 |
/** |
999 |
* Add a group number to the set of key groups. Should be called |
1000 |
* when an instrument is loaded to make sure there are event lists |
1001 |
* for all key groups. |
1002 |
*/ |
1003 |
void AbstractEngineChannel::AddGroup(uint group) { |
1004 |
if (group) { |
1005 |
std::pair<ActiveKeyGroupMap::iterator, bool> p = |
1006 |
ActiveKeyGroups.insert(ActiveKeyGroupMap::value_type(group, 0)); |
1007 |
if (p.second) { |
1008 |
// If the engine channel is pending deletion (see bug |
1009 |
// #113), pEngine will be null, so we can't use |
1010 |
// pEngine->pEventPool here. Instead we're using a |
1011 |
// specialized RTList that allows specifying the pool |
1012 |
// later. |
1013 |
(*p.first).second = new LazyList<Event>; |
1014 |
} |
1015 |
} |
1016 |
} |
1017 |
|
1018 |
/** |
1019 |
* Handle key group (a.k.a. exclusive group) conflicts. |
1020 |
*/ |
1021 |
void AbstractEngineChannel::HandleKeyGroupConflicts(uint KeyGroup, Pool<Event>::Iterator& itNoteOnEvent) { |
1022 |
dmsg(4,("HandelKeyGroupConflicts KeyGroup=%d\n", KeyGroup)); |
1023 |
if (KeyGroup) { |
1024 |
// send a release event to all active voices in the group |
1025 |
RTList<Event>::Iterator itEvent = ActiveKeyGroups[KeyGroup]->allocAppend(pEngine->pEventPool); |
1026 |
*itEvent = *itNoteOnEvent; |
1027 |
} |
1028 |
} |
1029 |
|
1030 |
/** |
1031 |
* Empty the lists of group events. Should be called from the |
1032 |
* audio thread, after all voices have been rendered. |
1033 |
*/ |
1034 |
void AbstractEngineChannel::ClearGroupEventLists() { |
1035 |
for (ActiveKeyGroupMap::iterator iter = ActiveKeyGroups.begin(); |
1036 |
iter != ActiveKeyGroups.end(); iter++) { |
1037 |
if (iter->second) { |
1038 |
iter->second->clear(); |
1039 |
} else { |
1040 |
dmsg(1,("EngineChannel: group event list was NULL")); |
1041 |
} |
1042 |
} |
1043 |
} |
1044 |
|
1045 |
/** |
1046 |
* Remove all lists with group events. |
1047 |
*/ |
1048 |
void AbstractEngineChannel::DeleteGroupEventLists() { |
1049 |
for (ActiveKeyGroupMap::iterator iter = ActiveKeyGroups.begin(); |
1050 |
iter != ActiveKeyGroups.end(); iter++) { |
1051 |
delete iter->second; |
1052 |
} |
1053 |
ActiveKeyGroups.clear(); |
1054 |
} |
1055 |
|
1056 |
} // namespace LinuxSampler |