/*************************************************************************** * * * LinuxSampler - modular, streaming capable sampler * * * * Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck * * Copyright (C) 2005 - 2020 Christian Schoenebeck * * Copyright (C) 2009 - 2012 Grigor Iliev * * Copyright (C) 2012 - 2016 Andreas Persson * * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the Free Software * * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * * MA 02111-1307 USA * ***************************************************************************/ #include "EngineChannel.h" #include "Engine.h" namespace LinuxSampler { namespace gig { EngineChannel::EngineChannel() { CurrentGigScript = NULL; } EngineChannel::~EngineChannel() { DisconnectAudioOutputDevice(); // In case the channel was removed before the instrument was // fully loaded, try to give back instrument again (see bug #113) InstrumentChangeCmd< ::gig::DimensionRegion, ::gig::Instrument>& cmd = ChangeInstrument(NULL); if (cmd.pInstrument) { Engine::instruments.HandBack(cmd.pInstrument, this); } /////// } AbstractEngine::Format EngineChannel::GetEngineFormat() { return AbstractEngine::GIG; } /** This method is not thread safe! */ void EngineChannel::ResetInternal(bool bResetEngine) { CurrentKeyDimension = 0; EngineChannelBase::ResetInternal(bResetEngine); } /** * Will be called by the MIDIIn Thread to signal that a program * change should be performed. As a program change isn't * real-time safe, the actual change is performed by the disk * thread. * * @param Program - MIDI program change number */ void EngineChannel::SendProgramChange(uint8_t Program) { SetMidiProgram(Program); Engine* engine = dynamic_cast(pEngine); if(engine == NULL) return; if(engine->GetDiskThread()) { uint32_t merged = (GetMidiBankMsb() << 16) | (GetMidiBankLsb() << 8) | Program; engine->GetDiskThread()->OrderProgramChange(merged, this); } else { // TODO: } } /** * Load an instrument from a .gig file. PrepareLoadInstrument() has to * be called first to provide the information which instrument to load. * This method will then actually start to load the instrument and block * the calling thread until loading was completed. * * @see PrepareLoadInstrument() */ void EngineChannel::LoadInstrument() { InstrumentResourceManager* pInstrumentManager = dynamic_cast(pEngine->GetInstrumentManager()); // make sure we don't trigger any new notes with an old // instrument InstrumentChangeCmd< ::gig::DimensionRegion, ::gig::Instrument>& cmd = ChangeInstrument(NULL); if (cmd.pInstrument) { // give old instrument back to instrument manager, but // keep the dimension regions and samples that are in use pInstrumentManager->HandBackInstrument(cmd.pInstrument, this, cmd.pRegionsInUse); } if (cmd.pScript) { // give old instrument script back to instrument resource manager cmd.pScript->resetAll(); CurrentGigScript = NULL; } cmd.pRegionsInUse->clear(); // delete all key groups DeleteGroupEventLists(); // request gig instrument from instrument manager ::gig::Instrument* newInstrument; try { InstrumentManager::instrument_id_t instrid; instrid.FileName = InstrumentFile; instrid.Index = InstrumentIdx; newInstrument = pInstrumentManager->Borrow(instrid, this); if (!newInstrument) { throw InstrumentManagerException("resource was not created"); } if (newInstrument->ScriptSlotCount() > 1) { std::cerr << "WARNING: Executing more than one real-time instrument script slot is not implemented yet!\n"; } ::gig::Script* script = newInstrument->GetScriptOfSlot(0); if (script) { String sourceCode = script->GetScriptAsText(); std::map patchVars = newInstrument->GetScriptPatchVariables(0); LoadInstrumentScript(sourceCode, patchVars); } CurrentGigScript = script; } catch (RIFF::Exception e) { InstrumentStat = -2; StatusChanged(true); String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message; throw Exception(msg); } catch (InstrumentManagerException e) { InstrumentStat = -3; StatusChanged(true); String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message(); throw Exception(msg); } catch (...) { InstrumentStat = -4; StatusChanged(true); throw Exception("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file."); } RoundRobinIndex = 0; for (int i = 0 ; i < 128 ; i++) pMIDIKeyInfo[i].pRoundRobinIndex = NULL; // rebuild ActiveKeyGroups map with key groups of current // instrument and set the round robin pointers to use one // counter for each region int region = 0; for (::gig::Region* pRegion = newInstrument->GetFirstRegion(); pRegion; pRegion = newInstrument->GetNextRegion()) { AddGroup(pRegion->KeyGroup); RoundRobinIndexes[region] = 0; for (int iKey = pRegion->KeyRange.low; iKey <= pRegion->KeyRange.high; iKey++) { pMIDIKeyInfo[iKey].pRoundRobinIndex = &RoundRobinIndexes[region]; } region++; } InstrumentIdxName = newInstrument->pInfo->Name; InstrumentStat = 100; { InstrumentChangeCmd< ::gig::DimensionRegion, ::gig::Instrument>& cmd = ChangeInstrument(newInstrument); if (cmd.pScript) { // give old instrument script back to instrument resource manager cmd.pScript->resetAll(); } } StatusChanged(true); } /** * Called by instrument editor API to inform this engine channel that the * passed @a script has been modified by the instrument editor and that * this engine channel should thus reload the instrument script (that is * that it should re-parse the scripts new source code). */ void EngineChannel::reloadScript(::gig::Script* script) { dmsg(3,("gig::EngineChannel::realoadScript()\n")); // make sure this engine channel is actually using the requested // modified gig::Script object (because the internal script resource // manager will i.e. provide the same VM object for different // ::gig::Script objects with same source code though. if (!script || CurrentGigScript != script) return; //TODO: reloading the entire instrument is currently a very lazy (and slow) solution just for reloading the instrument script try { LoadInstrument(); } catch (Exception e) { std::cerr << e.Message() << std::endl; } catch (...) { String msg = "gig::Engine error: Failed to reload instrument script, cause: Unknown exception while trying to reload gig file."; std::cerr << msg << std::endl; } } void EngineChannel::ProcessKeySwitchChange(int key) { // Change key dimension value if key is in keyswitching area { if (key >= pInstrument->DimensionKeyRange.low && key <= pInstrument->DimensionKeyRange.high) CurrentKeyDimension = float(key - pInstrument->DimensionKeyRange.low) / (pInstrument->DimensionKeyRange.high - pInstrument->DimensionKeyRange.low + 1); } } String EngineChannel::InstrumentFileName() { return EngineChannelBase::InstrumentFileName(); } String EngineChannel::InstrumentFileName(int index) { if (index == 0) return InstrumentFileName(); if (!pInstrument || !pInstrument->GetParent()) return ""; DLS::File* pMainFile = dynamic_cast(pInstrument->GetParent()); if (!pMainFile) return ""; RIFF::File* pExtensionFile = pMainFile->GetExtensionFile(index); return (pExtensionFile) ? pExtensionFile->GetFileName() : ""; } }} // namespace LinuxSampler::gig