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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.handlerController = script.parserContext->eventHandlerByName("controller"); |
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script.bHasValidScript = |
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script.handlerInit || script.handlerNote || 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++; |
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if (script.handlerNote || script.handlerController) 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.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); |
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} |
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{ |
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ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig(); |
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devices.remove(pDevice); |
447 |
} |
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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 |
452 |
* voice for the given key. This method is meant for real time rendering, |
453 |
* 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 |
458 |
*/ |
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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 |
462 |
LockGuard g; |
463 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
464 |
|
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Event event = pEngine->pEventGenerator->CreateEvent(); |
466 |
event.Type = Event::type_note_on; |
467 |
event.Param.Note.Key = Key; |
468 |
event.Param.Note.Velocity = Velocity; |
469 |
event.Param.Note.Channel = MidiChannel; |
470 |
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!")); |
473 |
// inform connected virtual MIDI devices if any ... |
474 |
// (e.g. virtual MIDI keyboard in instrument editor(s)) |
475 |
ArrayList<VirtualMidiDevice*>& devices = |
476 |
const_cast<ArrayList<VirtualMidiDevice*>&>( |
477 |
virtualMidiDevicesReader_MidiThread.Lock() |
478 |
); |
479 |
for (int i = 0; i < devices.size(); i++) { |
480 |
devices[i]->SendNoteOnToDevice(Key, Velocity); |
481 |
} |
482 |
virtualMidiDevicesReader_MidiThread.Unlock(); |
483 |
} |
484 |
} |
485 |
|
486 |
/** |
487 |
* Will be called by the MIDIIn Thread to let the audio thread trigger a new |
488 |
* voice for the given key. This method is meant for offline rendering |
489 |
* and / or for cases where the exact position of the event in the current |
490 |
* audio fragment is already known. |
491 |
* |
492 |
* @param Key - MIDI key number of the triggered key |
493 |
* @param Velocity - MIDI velocity value of the triggered key |
494 |
* @param FragmentPos - sample point position in the current audio |
495 |
* fragment to which this event belongs to |
496 |
*/ |
497 |
void AbstractEngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel, int32_t FragmentPos) { |
498 |
if (FragmentPos < 0) { |
499 |
dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!")); |
500 |
} |
501 |
else if (pEngine) { |
502 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
503 |
LockGuard g; |
504 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
505 |
|
506 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
507 |
event.Type = Event::type_note_on; |
508 |
event.Param.Note.Key = Key; |
509 |
event.Param.Note.Velocity = Velocity; |
510 |
event.Param.Note.Channel = MidiChannel; |
511 |
event.pEngineChannel = this; |
512 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
513 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
514 |
// inform connected virtual MIDI devices if any ... |
515 |
// (e.g. virtual MIDI keyboard in instrument editor(s)) |
516 |
ArrayList<VirtualMidiDevice*>& devices = |
517 |
const_cast<ArrayList<VirtualMidiDevice*>&>( |
518 |
virtualMidiDevicesReader_MidiThread.Lock() |
519 |
); |
520 |
for (int i = 0; i < devices.size(); i++) { |
521 |
devices[i]->SendNoteOnToDevice(Key, Velocity); |
522 |
} |
523 |
virtualMidiDevicesReader_MidiThread.Unlock(); |
524 |
} |
525 |
} |
526 |
|
527 |
/** |
528 |
* Will be called by the MIDIIn Thread to signal the audio thread to release |
529 |
* voice(s) on the given key. This method is meant for real time rendering, |
530 |
* that is an event will immediately be created with the current system |
531 |
* time as time stamp. |
532 |
* |
533 |
* @param Key - MIDI key number of the released key |
534 |
* @param Velocity - MIDI release velocity value of the released key |
535 |
*/ |
536 |
void AbstractEngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel) { |
537 |
if (pEngine) { |
538 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
539 |
LockGuard g; |
540 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
541 |
|
542 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
543 |
event.Type = Event::type_note_off; |
544 |
event.Param.Note.Key = Key; |
545 |
event.Param.Note.Velocity = Velocity; |
546 |
event.Param.Note.Channel = MidiChannel; |
547 |
event.pEngineChannel = this; |
548 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
549 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
550 |
// inform connected virtual MIDI devices if any ... |
551 |
// (e.g. virtual MIDI keyboard in instrument editor(s)) |
552 |
ArrayList<VirtualMidiDevice*>& devices = |
553 |
const_cast<ArrayList<VirtualMidiDevice*>&>( |
554 |
virtualMidiDevicesReader_MidiThread.Lock() |
555 |
); |
556 |
for (int i = 0; i < devices.size(); i++) { |
557 |
devices[i]->SendNoteOffToDevice(Key, Velocity); |
558 |
} |
559 |
virtualMidiDevicesReader_MidiThread.Unlock(); |
560 |
} |
561 |
} |
562 |
|
563 |
/** |
564 |
* Will be called by the MIDIIn Thread to signal the audio thread to release |
565 |
* voice(s) on the given key. This method is meant for offline rendering |
566 |
* and / or for cases where the exact position of the event in the current |
567 |
* audio fragment is already known. |
568 |
* |
569 |
* @param Key - MIDI key number of the released key |
570 |
* @param Velocity - MIDI release velocity value of the released key |
571 |
* @param FragmentPos - sample point position in the current audio |
572 |
* fragment to which this event belongs to |
573 |
*/ |
574 |
void AbstractEngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel, int32_t FragmentPos) { |
575 |
if (FragmentPos < 0) { |
576 |
dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!")); |
577 |
} |
578 |
else if (pEngine) { |
579 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
580 |
LockGuard g; |
581 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
582 |
|
583 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
584 |
event.Type = Event::type_note_off; |
585 |
event.Param.Note.Key = Key; |
586 |
event.Param.Note.Velocity = Velocity; |
587 |
event.Param.Note.Channel = MidiChannel; |
588 |
event.pEngineChannel = this; |
589 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
590 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
591 |
// inform connected virtual MIDI devices if any ... |
592 |
// (e.g. virtual MIDI keyboard in instrument editor(s)) |
593 |
ArrayList<VirtualMidiDevice*>& devices = |
594 |
const_cast<ArrayList<VirtualMidiDevice*>&>( |
595 |
virtualMidiDevicesReader_MidiThread.Lock() |
596 |
); |
597 |
for (int i = 0; i < devices.size(); i++) { |
598 |
devices[i]->SendNoteOffToDevice(Key, Velocity); |
599 |
} |
600 |
virtualMidiDevicesReader_MidiThread.Unlock(); |
601 |
} |
602 |
} |
603 |
|
604 |
/** |
605 |
* Will be called by the MIDIIn Thread to signal the audio thread to change |
606 |
* the pitch value for all voices. This method is meant for real time |
607 |
* rendering, that is an event will immediately be created with the |
608 |
* current system time as time stamp. |
609 |
* |
610 |
* @param Pitch - MIDI pitch value (-8192 ... +8191) |
611 |
*/ |
612 |
void AbstractEngineChannel::SendPitchbend(int Pitch, uint8_t MidiChannel) { |
613 |
if (pEngine) { |
614 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
615 |
LockGuard g; |
616 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
617 |
|
618 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
619 |
event.Type = Event::type_pitchbend; |
620 |
event.Param.Pitch.Pitch = Pitch; |
621 |
event.Param.Pitch.Channel = MidiChannel; |
622 |
event.pEngineChannel = this; |
623 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
624 |
else dmsg(1,("EngineChannel: Input event queue full!")); |
625 |
} |
626 |
} |
627 |
|
628 |
/** |
629 |
* Will be called by the MIDIIn Thread to signal the audio thread to change |
630 |
* the pitch value for all voices. This method is meant for offline |
631 |
* rendering and / or for cases where the exact position of the event in |
632 |
* the current audio fragment is already known. |
633 |
* |
634 |
* @param Pitch - MIDI pitch value (-8192 ... +8191) |
635 |
* @param FragmentPos - sample point position in the current audio |
636 |
* fragment to which this event belongs to |
637 |
*/ |
638 |
void AbstractEngineChannel::SendPitchbend(int Pitch, uint8_t MidiChannel, int32_t FragmentPos) { |
639 |
if (FragmentPos < 0) { |
640 |
dmsg(1,("AbstractEngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!")); |
641 |
} |
642 |
else if (pEngine) { |
643 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
644 |
LockGuard g; |
645 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
646 |
|
647 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
648 |
event.Type = Event::type_pitchbend; |
649 |
event.Param.Pitch.Pitch = Pitch; |
650 |
event.Param.Pitch.Channel = MidiChannel; |
651 |
event.pEngineChannel = this; |
652 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
653 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
654 |
} |
655 |
} |
656 |
|
657 |
/** |
658 |
* Will be called by the MIDIIn Thread to signal the audio thread that a |
659 |
* continuous controller value has changed. This method is meant for real |
660 |
* time rendering, that is an event will immediately be created with the |
661 |
* current system time as time stamp. |
662 |
* |
663 |
* @param Controller - MIDI controller number of the occured control change |
664 |
* @param Value - value of the control change |
665 |
*/ |
666 |
void AbstractEngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, uint8_t MidiChannel) { |
667 |
if (pEngine) { |
668 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
669 |
LockGuard g; |
670 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
671 |
|
672 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
673 |
event.Type = Event::type_control_change; |
674 |
event.Param.CC.Controller = Controller; |
675 |
event.Param.CC.Value = Value; |
676 |
event.Param.CC.Channel = MidiChannel; |
677 |
event.pEngineChannel = this; |
678 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
679 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
680 |
} |
681 |
} |
682 |
|
683 |
/** |
684 |
* Will be called by the MIDIIn Thread to signal the audio thread that a |
685 |
* continuous controller value has changed. This method is meant for |
686 |
* offline rendering and / or for cases where the exact position of the |
687 |
* event in the current audio fragment is already known. |
688 |
* |
689 |
* @param Controller - MIDI controller number of the occured control change |
690 |
* @param Value - value of the control change |
691 |
* @param FragmentPos - sample point position in the current audio |
692 |
* fragment to which this event belongs to |
693 |
*/ |
694 |
void AbstractEngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) { |
695 |
if (FragmentPos < 0) { |
696 |
dmsg(1,("AbstractEngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!")); |
697 |
} |
698 |
else if (pEngine) { |
699 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
700 |
LockGuard g; |
701 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
702 |
|
703 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
704 |
event.Type = Event::type_control_change; |
705 |
event.Param.CC.Controller = Controller; |
706 |
event.Param.CC.Value = Value; |
707 |
event.Param.CC.Channel = MidiChannel; |
708 |
event.pEngineChannel = this; |
709 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
710 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
711 |
} |
712 |
} |
713 |
|
714 |
void AbstractEngineChannel::SendChannelPressure(uint8_t Value, uint8_t MidiChannel) { |
715 |
if (pEngine) { |
716 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
717 |
LockGuard g; |
718 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
719 |
|
720 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
721 |
event.Type = Event::type_channel_pressure; |
722 |
event.Param.ChannelPressure.Value = Value; |
723 |
event.Param.ChannelPressure.Channel = MidiChannel; |
724 |
event.pEngineChannel = this; |
725 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
726 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
727 |
} |
728 |
} |
729 |
|
730 |
void AbstractEngineChannel::SendChannelPressure(uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) { |
731 |
if (pEngine) { |
732 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
733 |
LockGuard g; |
734 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
735 |
|
736 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
737 |
event.Type = Event::type_channel_pressure; |
738 |
event.Param.ChannelPressure.Value = Value; |
739 |
event.Param.ChannelPressure.Channel = MidiChannel; |
740 |
event.pEngineChannel = this; |
741 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
742 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
743 |
} |
744 |
} |
745 |
|
746 |
void AbstractEngineChannel::SendPolyphonicKeyPressure(uint8_t Key, uint8_t Value, uint8_t MidiChannel) { |
747 |
if (pEngine) { |
748 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
749 |
LockGuard g; |
750 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
751 |
|
752 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
753 |
event.Type = Event::type_note_pressure; |
754 |
event.Param.NotePressure.Key = Key; |
755 |
event.Param.NotePressure.Value = Value; |
756 |
event.Param.NotePressure.Channel = MidiChannel; |
757 |
event.pEngineChannel = this; |
758 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
759 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
760 |
} |
761 |
} |
762 |
|
763 |
void AbstractEngineChannel::SendPolyphonicKeyPressure(uint8_t Key, uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) { |
764 |
if (pEngine) { |
765 |
// protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel |
766 |
LockGuard g; |
767 |
if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex); |
768 |
|
769 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
770 |
event.Type = Event::type_note_pressure; |
771 |
event.Param.NotePressure.Key = Key; |
772 |
event.Param.NotePressure.Value = Value; |
773 |
event.Param.NotePressure.Channel = MidiChannel; |
774 |
event.pEngineChannel = this; |
775 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
776 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
777 |
} |
778 |
} |
779 |
|
780 |
/** |
781 |
* Copy all events from the engine channel's input event queue buffer to |
782 |
* the internal event list. This will be done at the beginning of each |
783 |
* audio cycle (that is each RenderAudio() call) to distinguish all |
784 |
* events which have to be processed in the current audio cycle. Each |
785 |
* EngineChannel has it's own input event queue for the common channel |
786 |
* specific events (like NoteOn, NoteOff and ControlChange events). |
787 |
* Beside that, the engine also has a input event queue for global |
788 |
* events (usually SysEx messages). |
789 |
* |
790 |
* @param Samples - number of sample points to be processed in the |
791 |
* current audio cycle |
792 |
*/ |
793 |
void AbstractEngineChannel::ImportEvents(uint Samples) { |
794 |
// import events from pure software MIDI "devices" |
795 |
// (e.g. virtual keyboard in instrument editor) |
796 |
{ |
797 |
const uint8_t channel = MidiChannel() == midi_chan_all ? 0 : MidiChannel(); |
798 |
const int FragmentPos = 0; // randomly chosen, we don't care about jitter for virtual MIDI devices |
799 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
800 |
VirtualMidiDevice::event_t devEvent; // the event format we get from the virtual MIDI device |
801 |
// as we're going to (carefully) write some status to the |
802 |
// synchronized struct, we cast away the const |
803 |
ArrayList<VirtualMidiDevice*>& devices = |
804 |
const_cast<ArrayList<VirtualMidiDevice*>&>(virtualMidiDevicesReader_AudioThread.Lock()); |
805 |
// iterate through all virtual MIDI devices |
806 |
for (int i = 0; i < devices.size(); i++) { |
807 |
VirtualMidiDevice* pDev = devices[i]; |
808 |
// I think we can simply flush the whole FIFO(s), the user shouldn't be so fast ;-) |
809 |
while (pDev->GetMidiEventFromDevice(devEvent)) { |
810 |
switch (devEvent.Type) { |
811 |
case VirtualMidiDevice::EVENT_TYPE_NOTEON: |
812 |
event.Type = Event::type_note_on; |
813 |
event.Param.Note.Key = devEvent.Arg1; |
814 |
event.Param.Note.Velocity = devEvent.Arg2; |
815 |
event.Param.Note.Channel = channel; |
816 |
break; |
817 |
case VirtualMidiDevice::EVENT_TYPE_NOTEOFF: |
818 |
event.Type = Event::type_note_off; |
819 |
event.Param.Note.Key = devEvent.Arg1; |
820 |
event.Param.Note.Velocity = devEvent.Arg2; |
821 |
event.Param.Note.Channel = channel; |
822 |
break; |
823 |
case VirtualMidiDevice::EVENT_TYPE_CC: |
824 |
switch (devEvent.Arg1) { |
825 |
case 0: // bank select MSB ... |
826 |
SetMidiBankMsb(devEvent.Arg2); |
827 |
continue; // don't push this event into FIFO |
828 |
case 32: // bank select LSB ... |
829 |
SetMidiBankLsb(devEvent.Arg2); |
830 |
continue; // don't push this event into FIFO |
831 |
default: // regular MIDI CC ... |
832 |
event.Type = Event::type_control_change; |
833 |
event.Param.CC.Controller = devEvent.Arg1; |
834 |
event.Param.CC.Value = devEvent.Arg2; |
835 |
event.Param.CC.Channel = channel; |
836 |
} |
837 |
break; |
838 |
case VirtualMidiDevice::EVENT_TYPE_PITCHBEND: |
839 |
event.Type = Event::type_pitchbend; |
840 |
event.Param.Pitch.Pitch = int(devEvent.Arg2 << 7 | devEvent.Arg1) - 8192; |
841 |
event.Param.Pitch.Channel = channel; |
842 |
break; |
843 |
case VirtualMidiDevice::EVENT_TYPE_PROGRAM: |
844 |
SendProgramChange(devEvent.Arg1); |
845 |
continue; // don't push this event into FIFO |
846 |
default: |
847 |
std::cerr << "AbstractEngineChannel::ImportEvents() ERROR: unknown event type (" |
848 |
<< devEvent.Type << "). This is a bug!"; |
849 |
continue; |
850 |
} |
851 |
event.pEngineChannel = this; |
852 |
// copy event to internal event list |
853 |
if (pEvents->poolIsEmpty()) { |
854 |
dmsg(1,("Event pool emtpy!\n")); |
855 |
goto exitVirtualDevicesLoop; |
856 |
} |
857 |
*pEvents->allocAppend() = event; |
858 |
} |
859 |
} |
860 |
} |
861 |
exitVirtualDevicesLoop: |
862 |
virtualMidiDevicesReader_AudioThread.Unlock(); |
863 |
|
864 |
// import events from the regular MIDI devices |
865 |
RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader(); |
866 |
Event* pEvent; |
867 |
while (true) { |
868 |
// get next event from input event queue |
869 |
if (!(pEvent = eventQueueReader.pop())) break; |
870 |
// if younger event reached, ignore that and all subsequent ones for now |
871 |
if (pEvent->FragmentPos() >= Samples) { |
872 |
eventQueueReader--; |
873 |
dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples)); |
874 |
pEvent->ResetFragmentPos(); |
875 |
break; |
876 |
} |
877 |
// copy event to internal event list |
878 |
if (pEvents->poolIsEmpty()) { |
879 |
dmsg(1,("Event pool emtpy!\n")); |
880 |
break; |
881 |
} |
882 |
*pEvents->allocAppend() = *pEvent; |
883 |
} |
884 |
eventQueueReader.free(); // free all copied events from input queue |
885 |
} |
886 |
|
887 |
FxSend* AbstractEngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) { |
888 |
if (pEngine) pEngine->DisableAndLock(); |
889 |
FxSend* pFxSend = new FxSend(this, MidiCtrl, Name); |
890 |
if (fxSends.empty()) { |
891 |
if (pEngine && pEngine->pAudioOutputDevice) { |
892 |
AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice; |
893 |
// create local render buffers |
894 |
pChannelLeft = new AudioChannel(0, pDevice->MaxSamplesPerCycle()); |
895 |
pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle()); |
896 |
} else { |
897 |
// postpone local render buffer creation until audio device is assigned |
898 |
pChannelLeft = NULL; |
899 |
pChannelRight = NULL; |
900 |
} |
901 |
} |
902 |
fxSends.push_back(pFxSend); |
903 |
if (pEngine) pEngine->Enable(); |
904 |
fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount()); |
905 |
|
906 |
return pFxSend; |
907 |
} |
908 |
|
909 |
FxSend* AbstractEngineChannel::GetFxSend(uint FxSendIndex) { |
910 |
return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL; |
911 |
} |
912 |
|
913 |
uint AbstractEngineChannel::GetFxSendCount() { |
914 |
return fxSends.size(); |
915 |
} |
916 |
|
917 |
void AbstractEngineChannel::RemoveFxSend(FxSend* pFxSend) { |
918 |
if (pEngine) pEngine->DisableAndLock(); |
919 |
for ( |
920 |
std::vector<FxSend*>::iterator iter = fxSends.begin(); |
921 |
iter != fxSends.end(); iter++ |
922 |
) { |
923 |
if (*iter == pFxSend) { |
924 |
delete pFxSend; |
925 |
fxSends.erase(iter); |
926 |
if (fxSends.empty()) { |
927 |
// destroy local render buffers |
928 |
if (pChannelLeft) delete pChannelLeft; |
929 |
if (pChannelRight) delete pChannelRight; |
930 |
// fallback to render directly into AudioOutputDevice's buffers |
931 |
if (pEngine && pEngine->pAudioOutputDevice) { |
932 |
pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft); |
933 |
pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight); |
934 |
} else { // we update the pointers later |
935 |
pChannelLeft = NULL; |
936 |
pChannelRight = NULL; |
937 |
} |
938 |
} |
939 |
break; |
940 |
} |
941 |
} |
942 |
if (pEngine) pEngine->Enable(); |
943 |
fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount()); |
944 |
} |
945 |
|
946 |
void AbstractEngineChannel::RemoveAllFxSends() { |
947 |
if (pEngine) pEngine->DisableAndLock(); |
948 |
if (!fxSends.empty()) { // free local render buffers |
949 |
if (pChannelLeft) { |
950 |
delete pChannelLeft; |
951 |
if (pEngine && pEngine->pAudioOutputDevice) { |
952 |
// fallback to render directly to the AudioOutputDevice's buffer |
953 |
pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft); |
954 |
} else pChannelLeft = NULL; |
955 |
} |
956 |
if (pChannelRight) { |
957 |
delete pChannelRight; |
958 |
if (pEngine && pEngine->pAudioOutputDevice) { |
959 |
// fallback to render directly to the AudioOutputDevice's buffer |
960 |
pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight); |
961 |
} else pChannelRight = NULL; |
962 |
} |
963 |
} |
964 |
for (int i = 0; i < fxSends.size(); i++) delete fxSends[i]; |
965 |
fxSends.clear(); |
966 |
if (pEngine) pEngine->Enable(); |
967 |
} |
968 |
|
969 |
/** |
970 |
* Add a group number to the set of key groups. Should be called |
971 |
* when an instrument is loaded to make sure there are event lists |
972 |
* for all key groups. |
973 |
*/ |
974 |
void AbstractEngineChannel::AddGroup(uint group) { |
975 |
if (group) { |
976 |
std::pair<ActiveKeyGroupMap::iterator, bool> p = |
977 |
ActiveKeyGroups.insert(ActiveKeyGroupMap::value_type(group, 0)); |
978 |
if (p.second) { |
979 |
// If the engine channel is pending deletion (see bug |
980 |
// #113), pEngine will be null, so we can't use |
981 |
// pEngine->pEventPool here. Instead we're using a |
982 |
// specialized RTList that allows specifying the pool |
983 |
// later. |
984 |
(*p.first).second = new LazyList<Event>; |
985 |
} |
986 |
} |
987 |
} |
988 |
|
989 |
/** |
990 |
* Handle key group (a.k.a. exclusive group) conflicts. |
991 |
*/ |
992 |
void AbstractEngineChannel::HandleKeyGroupConflicts(uint KeyGroup, Pool<Event>::Iterator& itNoteOnEvent) { |
993 |
dmsg(4,("HandelKeyGroupConflicts KeyGroup=%d\n", KeyGroup)); |
994 |
if (KeyGroup) { |
995 |
// send a release event to all active voices in the group |
996 |
RTList<Event>::Iterator itEvent = ActiveKeyGroups[KeyGroup]->allocAppend(pEngine->pEventPool); |
997 |
*itEvent = *itNoteOnEvent; |
998 |
} |
999 |
} |
1000 |
|
1001 |
/** |
1002 |
* Empty the lists of group events. Should be called from the |
1003 |
* audio thread, after all voices have been rendered. |
1004 |
*/ |
1005 |
void AbstractEngineChannel::ClearGroupEventLists() { |
1006 |
for (ActiveKeyGroupMap::iterator iter = ActiveKeyGroups.begin(); |
1007 |
iter != ActiveKeyGroups.end(); iter++) { |
1008 |
if (iter->second) { |
1009 |
iter->second->clear(); |
1010 |
} else { |
1011 |
dmsg(1,("EngineChannel: group event list was NULL")); |
1012 |
} |
1013 |
} |
1014 |
} |
1015 |
|
1016 |
/** |
1017 |
* Remove all lists with group events. |
1018 |
*/ |
1019 |
void AbstractEngineChannel::DeleteGroupEventLists() { |
1020 |
for (ActiveKeyGroupMap::iterator iter = ActiveKeyGroups.begin(); |
1021 |
iter != ActiveKeyGroups.end(); iter++) { |
1022 |
delete iter->second; |
1023 |
} |
1024 |
ActiveKeyGroups.clear(); |
1025 |
} |
1026 |
|
1027 |
} // namespace LinuxSampler |