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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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* * |
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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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#include <sstream> |
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#include "DiskThread.h" |
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#include "Voice.h" |
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#include "EGADSR.h" |
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#include "Engine.h" |
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#if defined(__APPLE__) |
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# include <stdlib.h> |
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#else |
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# include <malloc.h> |
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#endif |
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namespace LinuxSampler { namespace gig { |
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InstrumentResourceManager Engine::Instruments; |
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Engine::Engine() { |
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pRIFF = NULL; |
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pGig = NULL; |
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pInstrument = NULL; |
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pAudioOutputDevice = NULL; |
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pDiskThread = NULL; |
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pEventGenerator = NULL; |
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pSysexBuffer = new RingBuffer<uint8_t>(SYSEX_BUFFER_SIZE, 0); |
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pEventQueue = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0); |
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pEventPool = new Pool<Event>(MAX_EVENTS_PER_FRAGMENT); |
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pVoicePool = new Pool<Voice>(MAX_AUDIO_VOICES); |
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pActiveKeys = new Pool<uint>(128); |
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pVoiceStealingQueue = new RTList<Event>(pEventPool); |
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pEvents = new RTList<Event>(pEventPool); |
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pCCEvents = new RTList<Event>(pEventPool); |
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for (uint i = 0; i < Event::destination_count; i++) { |
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pSynthesisEvents[i] = new RTList<Event>(pEventPool); |
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} |
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for (uint i = 0; i < 128; i++) { |
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pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pVoicePool); |
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pMIDIKeyInfo[i].KeyPressed = false; |
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pMIDIKeyInfo[i].Active = false; |
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pMIDIKeyInfo[i].ReleaseTrigger = false; |
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pMIDIKeyInfo[i].pEvents = new RTList<Event>(pEventPool); |
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} |
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for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
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iterVoice->SetEngine(this); |
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} |
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pVoicePool->clear(); |
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pSynthesisParameters[0] = NULL; // we allocate when an audio device is connected |
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pBasicFilterParameters = NULL; |
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pMainFilterParameters = NULL; |
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InstrumentIdx = -1; |
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InstrumentStat = -1; |
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AudioDeviceChannelLeft = -1; |
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AudioDeviceChannelRight = -1; |
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ResetInternal(); |
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} |
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Engine::~Engine() { |
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if (pDiskThread) { |
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dmsg(1,("Stopping disk thread...")); |
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pDiskThread->StopThread(); |
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delete pDiskThread; |
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dmsg(1,("OK\n")); |
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} |
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if (pInstrument) Instruments.HandBack(pInstrument, this); |
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if (pGig) delete pGig; |
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if (pRIFF) delete pRIFF; |
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for (uint i = 0; i < 128; i++) { |
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if (pMIDIKeyInfo[i].pActiveVoices) delete pMIDIKeyInfo[i].pActiveVoices; |
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if (pMIDIKeyInfo[i].pEvents) delete pMIDIKeyInfo[i].pEvents; |
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} |
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for (uint i = 0; i < Event::destination_count; i++) { |
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if (pSynthesisEvents[i]) delete pSynthesisEvents[i]; |
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} |
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if (pEvents) delete pEvents; |
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if (pCCEvents) delete pCCEvents; |
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if (pEventQueue) delete pEventQueue; |
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if (pEventPool) delete pEventPool; |
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if (pVoicePool) { |
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pVoicePool->clear(); |
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delete pVoicePool; |
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} |
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if (pActiveKeys) delete pActiveKeys; |
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if (pSysexBuffer) delete pSysexBuffer; |
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if (pEventGenerator) delete pEventGenerator; |
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if (pMainFilterParameters) delete[] pMainFilterParameters; |
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if (pBasicFilterParameters) delete[] pBasicFilterParameters; |
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if (pSynthesisParameters[0]) free(pSynthesisParameters[0]); |
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if (pVoiceStealingQueue) delete pVoiceStealingQueue; |
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} |
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void Engine::Enable() { |
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dmsg(3,("gig::Engine: enabling\n")); |
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EngineDisabled.PushAndUnlock(false, 2); // set condition object 'EngineDisabled' to false (wait max. 2s) |
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dmsg(3,("gig::Engine: enabled (val=%d)\n", EngineDisabled.GetUnsafe())); |
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} |
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void Engine::Disable() { |
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dmsg(3,("gig::Engine: disabling\n")); |
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bool* pWasDisabled = EngineDisabled.PushAndUnlock(true, 2); // wait max. 2s |
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if (!pWasDisabled) dmsg(3,("gig::Engine warning: Timeout waiting to disable engine.\n")); |
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} |
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void Engine::DisableAndLock() { |
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dmsg(3,("gig::Engine: disabling\n")); |
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bool* pWasDisabled = EngineDisabled.Push(true, 2); // wait max. 2s |
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if (!pWasDisabled) dmsg(3,("gig::Engine warning: Timeout waiting to disable engine.\n")); |
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} |
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/** |
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* Reset all voices and disk thread and clear input event queue and all |
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* control and status variables. |
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*/ |
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void Engine::Reset() { |
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DisableAndLock(); |
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//if (pAudioOutputDevice->IsPlaying()) { // if already running |
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/* |
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// signal audio thread not to enter render part anymore |
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SuspensionRequested = true; |
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// sleep until wakened by audio thread |
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pthread_mutex_lock(&__render_state_mutex); |
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pthread_cond_wait(&__render_exit_condition, &__render_state_mutex); |
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pthread_mutex_unlock(&__render_state_mutex); |
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*/ |
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//} |
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//if (wasplaying) pAudioOutputDevice->Stop(); |
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ResetInternal(); |
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// signal audio thread to continue with rendering |
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//SuspensionRequested = false; |
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Enable(); |
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} |
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/** |
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* Reset all voices and disk thread and clear input event queue and all |
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* control and status variables. This method is not thread safe! |
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*/ |
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void Engine::ResetInternal() { |
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Pitch = 0; |
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SustainPedal = false; |
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ActiveVoiceCount = 0; |
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ActiveVoiceCountMax = 0; |
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GlobalVolume = 1.0; |
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CurrentKeyDimension = 0; |
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// reset voice stealing parameters |
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itLastStolenVoice = RTList<Voice>::Iterator(); |
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iuiLastStolenKey = RTList<uint>::Iterator(); |
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pVoiceStealingQueue->clear(); |
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// reset to normal chromatic scale (means equal temper) |
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memset(&ScaleTuning[0], 0x00, 12); |
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// set all MIDI controller values to zero |
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memset(ControllerTable, 0x00, 128); |
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// reset key info |
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for (uint i = 0; i < 128; i++) { |
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pMIDIKeyInfo[i].pActiveVoices->clear(); |
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pMIDIKeyInfo[i].pEvents->clear(); |
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pMIDIKeyInfo[i].KeyPressed = false; |
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pMIDIKeyInfo[i].Active = false; |
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pMIDIKeyInfo[i].ReleaseTrigger = false; |
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pMIDIKeyInfo[i].itSelf = Pool<uint>::Iterator(); |
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} |
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// reset all key groups |
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map<uint,uint*>::iterator iter = ActiveKeyGroups.begin(); |
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for (; iter != ActiveKeyGroups.end(); iter++) iter->second = NULL; |
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// reset all voices |
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for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
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iterVoice->Reset(); |
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} |
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pVoicePool->clear(); |
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// free all active keys |
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pActiveKeys->clear(); |
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// reset disk thread |
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if (pDiskThread) pDiskThread->Reset(); |
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// delete all input events |
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pEventQueue->init(); |
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} |
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/** |
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* More or less a workaround to set the instrument name, index and load |
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* status variable to zero percent immediately, that is without blocking |
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* the calling thread. It might be used in future for other preparations |
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* as well though. |
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* |
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* @param FileName - file name of the Gigasampler instrument file |
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* @param Instrument - index of the instrument in the .gig file |
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* @see LoadInstrument() |
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*/ |
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void Engine::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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* Load an instrument from a .gig file. PrepareLoadInstrument() has to |
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* be called first to provide the information which instrument to load. |
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* This method will then actually start to load the instrument and block |
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* the calling thread until loading was completed. |
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* |
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* @returns detailed description of the method call result |
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* @see PrepareLoadInstrument() |
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*/ |
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void Engine::LoadInstrument() { |
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DisableAndLock(); |
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ResetInternal(); // reset engine |
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// free old instrument |
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if (pInstrument) { |
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// give old instrument back to instrument manager |
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Instruments.HandBack(pInstrument, this); |
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} |
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// delete all key groups |
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ActiveKeyGroups.clear(); |
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// request gig instrument from instrument manager |
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try { |
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instrument_id_t instrid; |
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instrid.FileName = InstrumentFile; |
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instrid.iInstrument = InstrumentIdx; |
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pInstrument = Instruments.Borrow(instrid, this); |
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if (!pInstrument) { |
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InstrumentStat = -1; |
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dmsg(1,("no instrument loaded!!!\n")); |
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exit(EXIT_FAILURE); |
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} |
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} |
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catch (RIFF::Exception e) { |
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InstrumentStat = -2; |
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String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message; |
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throw LinuxSamplerException(msg); |
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} |
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catch (InstrumentResourceManagerException e) { |
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InstrumentStat = -3; |
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String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message(); |
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throw LinuxSamplerException(msg); |
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} |
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catch (...) { |
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InstrumentStat = -4; |
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throw LinuxSamplerException("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file."); |
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} |
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// rebuild ActiveKeyGroups map with key groups of current instrument |
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for (::gig::Region* pRegion = pInstrument->GetFirstRegion(); pRegion; pRegion = pInstrument->GetNextRegion()) |
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if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL; |
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InstrumentIdxName = pInstrument->pInfo->Name; |
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InstrumentStat = 100; |
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// inform audio driver for the need of two channels |
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try { |
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if (pAudioOutputDevice) pAudioOutputDevice->AcquireChannels(2); // gig Engine only stereo |
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} |
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catch (AudioOutputException e) { |
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String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message(); |
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throw LinuxSamplerException(msg); |
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} |
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Enable(); |
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} |
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/** |
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* Will be called by the InstrumentResourceManager when the instrument |
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* we are currently using in this engine is going to be updated, so we |
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* can stop playback before that happens. |
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*/ |
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void Engine::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) { |
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dmsg(3,("gig::Engine: Received instrument update message.\n")); |
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DisableAndLock(); |
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ResetInternal(); |
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this->pInstrument = NULL; |
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} |
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/** |
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* Will be called by the InstrumentResourceManager when the instrument |
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* update process was completed, so we can continue with playback. |
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*/ |
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void Engine::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) { |
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this->pInstrument = pNewResource; //TODO: there are couple of engine parameters we should update here as well if the instrument was updated (see LoadInstrument()) |
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Enable(); |
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} |
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void Engine::Connect(AudioOutputDevice* pAudioOut) { |
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pAudioOutputDevice = pAudioOut; |
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ResetInternal(); |
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// inform audio driver for the need of two channels |
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try { |
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pAudioOutputDevice->AcquireChannels(2); // gig engine only stereo |
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} |
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catch (AudioOutputException e) { |
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String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message(); |
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throw LinuxSamplerException(msg); |
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} |
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this->AudioDeviceChannelLeft = 0; |
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this->AudioDeviceChannelRight = 1; |
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this->pOutputLeft = pAudioOutputDevice->Channel(0)->Buffer(); |
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this->pOutputRight = pAudioOutputDevice->Channel(1)->Buffer(); |
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this->MaxSamplesPerCycle = pAudioOutputDevice->MaxSamplesPerCycle(); |
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this->SampleRate = pAudioOutputDevice->SampleRate(); |
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// FIXME: audio drivers with varying fragment sizes might be a problem here |
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MaxFadeOutPos = MaxSamplesPerCycle - int(double(SampleRate) * EG_MIN_RELEASE_TIME) - 1; |
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if (MaxFadeOutPos < 0) |
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throw LinuxSamplerException("EG_MIN_RELEASE_TIME in EGADSR.h to big for current audio fragment size / sampling rate!"); |
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schoenebeck |
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// (re)create disk thread |
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if (this->pDiskThread) { |
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dmsg(1,("Stopping disk thread...")); |
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this->pDiskThread->StopThread(); |
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delete this->pDiskThread; |
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dmsg(1,("OK\n")); |
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} |
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this->pDiskThread = new DiskThread(((pAudioOut->MaxSamplesPerCycle() << MAX_PITCH) << 1) + 6); //FIXME: assuming stereo |
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if (!pDiskThread) { |
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|
|
dmsg(0,("gig::Engine new diskthread = NULL\n")); |
360 |
|
|
exit(EXIT_FAILURE); |
361 |
|
|
} |
362 |
|
|
|
363 |
schoenebeck |
271 |
for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
364 |
|
|
iterVoice->pDiskThread = this->pDiskThread; |
365 |
schoenebeck |
53 |
dmsg(3,("d")); |
366 |
|
|
} |
367 |
|
|
pVoicePool->clear(); |
368 |
|
|
|
369 |
|
|
// (re)create event generator |
370 |
|
|
if (pEventGenerator) delete pEventGenerator; |
371 |
|
|
pEventGenerator = new EventGenerator(pAudioOut->SampleRate()); |
372 |
|
|
|
373 |
|
|
// (re)allocate synthesis parameter matrix |
374 |
schoenebeck |
319 |
if (pSynthesisParameters[0]) free(pSynthesisParameters[0]); |
375 |
schoenebeck |
361 |
|
376 |
|
|
#if defined(__APPLE__) |
377 |
|
|
pSynthesisParameters[0] = (float *) malloc(Event::destination_count * sizeof(float) * pAudioOut->MaxSamplesPerCycle()); |
378 |
|
|
#else |
379 |
schoenebeck |
319 |
pSynthesisParameters[0] = (float *) memalign(16,(Event::destination_count * sizeof(float) * pAudioOut->MaxSamplesPerCycle())); |
380 |
schoenebeck |
361 |
#endif |
381 |
schoenebeck |
53 |
for (int dst = 1; dst < Event::destination_count; dst++) |
382 |
|
|
pSynthesisParameters[dst] = pSynthesisParameters[dst - 1] + pAudioOut->MaxSamplesPerCycle(); |
383 |
|
|
|
384 |
schoenebeck |
80 |
// (re)allocate biquad filter parameter sequence |
385 |
|
|
if (pBasicFilterParameters) delete[] pBasicFilterParameters; |
386 |
|
|
if (pMainFilterParameters) delete[] pMainFilterParameters; |
387 |
|
|
pBasicFilterParameters = new biquad_param_t[pAudioOut->MaxSamplesPerCycle()]; |
388 |
|
|
pMainFilterParameters = new biquad_param_t[pAudioOut->MaxSamplesPerCycle()]; |
389 |
|
|
|
390 |
schoenebeck |
53 |
dmsg(1,("Starting disk thread...")); |
391 |
|
|
pDiskThread->StartThread(); |
392 |
|
|
dmsg(1,("OK\n")); |
393 |
|
|
|
394 |
schoenebeck |
271 |
for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
395 |
|
|
if (!iterVoice->pDiskThread) { |
396 |
schoenebeck |
53 |
dmsg(0,("Engine -> voice::trigger: !pDiskThread\n")); |
397 |
|
|
exit(EXIT_FAILURE); |
398 |
|
|
} |
399 |
|
|
} |
400 |
|
|
} |
401 |
|
|
|
402 |
|
|
void Engine::DisconnectAudioOutputDevice() { |
403 |
|
|
if (pAudioOutputDevice) { // if clause to prevent disconnect loops |
404 |
|
|
AudioOutputDevice* olddevice = pAudioOutputDevice; |
405 |
|
|
pAudioOutputDevice = NULL; |
406 |
|
|
olddevice->Disconnect(this); |
407 |
schoenebeck |
225 |
AudioDeviceChannelLeft = -1; |
408 |
|
|
AudioDeviceChannelRight = -1; |
409 |
schoenebeck |
53 |
} |
410 |
|
|
} |
411 |
|
|
|
412 |
|
|
/** |
413 |
|
|
* Let this engine proceed to render the given amount of sample points. The |
414 |
|
|
* calculated audio data of all voices of this engine will be placed into |
415 |
|
|
* the engine's audio sum buffer which has to be copied and eventually be |
416 |
|
|
* converted to the appropriate value range by the audio output class (e.g. |
417 |
|
|
* AlsaIO or JackIO) right after. |
418 |
|
|
* |
419 |
|
|
* @param Samples - number of sample points to be rendered |
420 |
|
|
* @returns 0 on success |
421 |
|
|
*/ |
422 |
|
|
int Engine::RenderAudio(uint Samples) { |
423 |
|
|
dmsg(5,("RenderAudio(Samples=%d)\n", Samples)); |
424 |
|
|
|
425 |
|
|
// return if no instrument loaded or engine disabled |
426 |
|
|
if (EngineDisabled.Pop()) { |
427 |
|
|
dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe())); |
428 |
|
|
return 0; |
429 |
|
|
} |
430 |
|
|
if (!pInstrument) { |
431 |
|
|
dmsg(5,("gig::Engine: no instrument loaded\n")); |
432 |
|
|
return 0; |
433 |
|
|
} |
434 |
|
|
|
435 |
|
|
|
436 |
schoenebeck |
293 |
// update time of start and end of this audio fragment (as events' time stamps relate to this) |
437 |
|
|
pEventGenerator->UpdateFragmentTime(Samples); |
438 |
|
|
|
439 |
|
|
|
440 |
schoenebeck |
53 |
// empty the event lists for the new fragment |
441 |
|
|
pEvents->clear(); |
442 |
|
|
pCCEvents->clear(); |
443 |
|
|
for (uint i = 0; i < Event::destination_count; i++) { |
444 |
|
|
pSynthesisEvents[i]->clear(); |
445 |
|
|
} |
446 |
schoenebeck |
271 |
{ |
447 |
|
|
RTList<uint>::Iterator iuiKey = pActiveKeys->first(); |
448 |
|
|
RTList<uint>::Iterator end = pActiveKeys->end(); |
449 |
|
|
for(; iuiKey != end; ++iuiKey) { |
450 |
|
|
pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key |
451 |
|
|
} |
452 |
schoenebeck |
250 |
} |
453 |
schoenebeck |
53 |
|
454 |
schoenebeck |
293 |
|
455 |
|
|
// get all events from the input event queue which belong to the current fragment |
456 |
|
|
{ |
457 |
|
|
RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader(); |
458 |
|
|
Event* pEvent; |
459 |
|
|
while (true) { |
460 |
|
|
// get next event from input event queue |
461 |
|
|
if (!(pEvent = eventQueueReader.pop())) break; |
462 |
|
|
// if younger event reached, ignore that and all subsequent ones for now |
463 |
|
|
if (pEvent->FragmentPos() >= Samples) { |
464 |
|
|
eventQueueReader--; |
465 |
|
|
dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples)); |
466 |
|
|
pEvent->ResetFragmentPos(); |
467 |
|
|
break; |
468 |
|
|
} |
469 |
|
|
// copy event to internal event list |
470 |
|
|
if (pEvents->poolIsEmpty()) { |
471 |
|
|
dmsg(1,("Event pool emtpy!\n")); |
472 |
|
|
break; |
473 |
|
|
} |
474 |
|
|
*pEvents->allocAppend() = *pEvent; |
475 |
|
|
} |
476 |
|
|
eventQueueReader.free(); // free all copied events from input queue |
477 |
schoenebeck |
53 |
} |
478 |
|
|
|
479 |
|
|
|
480 |
|
|
// process events |
481 |
schoenebeck |
271 |
{ |
482 |
|
|
RTList<Event>::Iterator itEvent = pEvents->first(); |
483 |
|
|
RTList<Event>::Iterator end = pEvents->end(); |
484 |
|
|
for (; itEvent != end; ++itEvent) { |
485 |
|
|
switch (itEvent->Type) { |
486 |
|
|
case Event::type_note_on: |
487 |
|
|
dmsg(5,("Engine: Note on received\n")); |
488 |
|
|
ProcessNoteOn(itEvent); |
489 |
|
|
break; |
490 |
|
|
case Event::type_note_off: |
491 |
|
|
dmsg(5,("Engine: Note off received\n")); |
492 |
|
|
ProcessNoteOff(itEvent); |
493 |
|
|
break; |
494 |
|
|
case Event::type_control_change: |
495 |
|
|
dmsg(5,("Engine: MIDI CC received\n")); |
496 |
|
|
ProcessControlChange(itEvent); |
497 |
|
|
break; |
498 |
|
|
case Event::type_pitchbend: |
499 |
|
|
dmsg(5,("Engine: Pitchbend received\n")); |
500 |
|
|
ProcessPitchbend(itEvent); |
501 |
|
|
break; |
502 |
|
|
case Event::type_sysex: |
503 |
|
|
dmsg(5,("Engine: Sysex received\n")); |
504 |
|
|
ProcessSysex(itEvent); |
505 |
|
|
break; |
506 |
|
|
} |
507 |
schoenebeck |
53 |
} |
508 |
|
|
} |
509 |
|
|
|
510 |
|
|
|
511 |
|
|
int active_voices = 0; |
512 |
|
|
|
513 |
schoenebeck |
271 |
// render audio from all active voices |
514 |
|
|
{ |
515 |
|
|
RTList<uint>::Iterator iuiKey = pActiveKeys->first(); |
516 |
|
|
RTList<uint>::Iterator end = pActiveKeys->end(); |
517 |
|
|
while (iuiKey != end) { // iterate through all active keys |
518 |
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey]; |
519 |
|
|
++iuiKey; |
520 |
schoenebeck |
53 |
|
521 |
schoenebeck |
271 |
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
522 |
|
|
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
523 |
|
|
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
524 |
|
|
// now render current voice |
525 |
|
|
itVoice->Render(Samples); |
526 |
|
|
if (itVoice->IsActive()) active_voices++; // still active |
527 |
|
|
else { // voice reached end, is now inactive |
528 |
schoenebeck |
285 |
FreeVoice(itVoice); // remove voice from the list of active voices |
529 |
schoenebeck |
271 |
} |
530 |
schoenebeck |
53 |
} |
531 |
|
|
} |
532 |
|
|
} |
533 |
|
|
|
534 |
|
|
|
535 |
schoenebeck |
250 |
// now render all postponed voices from voice stealing |
536 |
schoenebeck |
271 |
{ |
537 |
|
|
RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first(); |
538 |
|
|
RTList<Event>::Iterator end = pVoiceStealingQueue->end(); |
539 |
|
|
for (; itVoiceStealEvent != end; ++itVoiceStealEvent) { |
540 |
|
|
Pool<Voice>::Iterator itNewVoice = LaunchVoice(itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false); |
541 |
|
|
if (itNewVoice) { |
542 |
schoenebeck |
285 |
for (; itNewVoice; itNewVoice = itNewVoice->itChildVoice) { |
543 |
|
|
itNewVoice->Render(Samples); |
544 |
|
|
if (itNewVoice->IsActive()) active_voices++; // still active |
545 |
|
|
else { // voice reached end, is now inactive |
546 |
|
|
FreeVoice(itNewVoice); // remove voice from the list of active voices |
547 |
|
|
} |
548 |
schoenebeck |
271 |
} |
549 |
schoenebeck |
250 |
} |
550 |
schoenebeck |
287 |
else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n")); |
551 |
schoenebeck |
250 |
} |
552 |
|
|
} |
553 |
|
|
// reset voice stealing for the new fragment |
554 |
|
|
pVoiceStealingQueue->clear(); |
555 |
schoenebeck |
271 |
itLastStolenVoice = RTList<Voice>::Iterator(); |
556 |
|
|
iuiLastStolenKey = RTList<uint>::Iterator(); |
557 |
schoenebeck |
250 |
|
558 |
|
|
|
559 |
schoenebeck |
287 |
// free all keys which have no active voices left |
560 |
|
|
{ |
561 |
|
|
RTList<uint>::Iterator iuiKey = pActiveKeys->first(); |
562 |
|
|
RTList<uint>::Iterator end = pActiveKeys->end(); |
563 |
|
|
while (iuiKey != end) { // iterate through all active keys |
564 |
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey]; |
565 |
|
|
++iuiKey; |
566 |
|
|
if (pKey->pActiveVoices->isEmpty()) FreeKey(pKey); |
567 |
|
|
#if DEVMODE |
568 |
|
|
else { // FIXME: should be removed before the final release (purpose: just a sanity check for debugging) |
569 |
|
|
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
570 |
|
|
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
571 |
|
|
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
572 |
|
|
if (itVoice->itKillEvent) { |
573 |
|
|
dmsg(1,("gig::Engine: ERROR, killed voice survived !!!\n")); |
574 |
|
|
} |
575 |
|
|
} |
576 |
|
|
} |
577 |
|
|
#endif // DEVMODE |
578 |
|
|
} |
579 |
|
|
} |
580 |
|
|
|
581 |
|
|
|
582 |
schoenebeck |
53 |
// write that to the disk thread class so that it can print it |
583 |
|
|
// on the console for debugging purposes |
584 |
|
|
ActiveVoiceCount = active_voices; |
585 |
|
|
if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount; |
586 |
|
|
|
587 |
|
|
|
588 |
|
|
return 0; |
589 |
|
|
} |
590 |
|
|
|
591 |
|
|
/** |
592 |
|
|
* Will be called by the MIDIIn Thread to let the audio thread trigger a new |
593 |
|
|
* voice for the given key. |
594 |
|
|
* |
595 |
|
|
* @param Key - MIDI key number of the triggered key |
596 |
|
|
* @param Velocity - MIDI velocity value of the triggered key |
597 |
|
|
*/ |
598 |
|
|
void Engine::SendNoteOn(uint8_t Key, uint8_t Velocity) { |
599 |
schoenebeck |
246 |
Event event = pEventGenerator->CreateEvent(); |
600 |
|
|
event.Type = Event::type_note_on; |
601 |
|
|
event.Param.Note.Key = Key; |
602 |
|
|
event.Param.Note.Velocity = Velocity; |
603 |
schoenebeck |
53 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
604 |
|
|
else dmsg(1,("Engine: Input event queue full!")); |
605 |
|
|
} |
606 |
|
|
|
607 |
|
|
/** |
608 |
|
|
* Will be called by the MIDIIn Thread to signal the audio thread to release |
609 |
|
|
* voice(s) on the given key. |
610 |
|
|
* |
611 |
|
|
* @param Key - MIDI key number of the released key |
612 |
|
|
* @param Velocity - MIDI release velocity value of the released key |
613 |
|
|
*/ |
614 |
|
|
void Engine::SendNoteOff(uint8_t Key, uint8_t Velocity) { |
615 |
schoenebeck |
246 |
Event event = pEventGenerator->CreateEvent(); |
616 |
|
|
event.Type = Event::type_note_off; |
617 |
|
|
event.Param.Note.Key = Key; |
618 |
|
|
event.Param.Note.Velocity = Velocity; |
619 |
schoenebeck |
53 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
620 |
|
|
else dmsg(1,("Engine: Input event queue full!")); |
621 |
|
|
} |
622 |
|
|
|
623 |
|
|
/** |
624 |
|
|
* Will be called by the MIDIIn Thread to signal the audio thread to change |
625 |
|
|
* the pitch value for all voices. |
626 |
|
|
* |
627 |
|
|
* @param Pitch - MIDI pitch value (-8192 ... +8191) |
628 |
|
|
*/ |
629 |
|
|
void Engine::SendPitchbend(int Pitch) { |
630 |
schoenebeck |
246 |
Event event = pEventGenerator->CreateEvent(); |
631 |
|
|
event.Type = Event::type_pitchbend; |
632 |
|
|
event.Param.Pitch.Pitch = Pitch; |
633 |
schoenebeck |
53 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
634 |
|
|
else dmsg(1,("Engine: Input event queue full!")); |
635 |
|
|
} |
636 |
|
|
|
637 |
|
|
/** |
638 |
|
|
* Will be called by the MIDIIn Thread to signal the audio thread that a |
639 |
|
|
* continuous controller value has changed. |
640 |
|
|
* |
641 |
|
|
* @param Controller - MIDI controller number of the occured control change |
642 |
|
|
* @param Value - value of the control change |
643 |
|
|
*/ |
644 |
|
|
void Engine::SendControlChange(uint8_t Controller, uint8_t Value) { |
645 |
schoenebeck |
246 |
Event event = pEventGenerator->CreateEvent(); |
646 |
|
|
event.Type = Event::type_control_change; |
647 |
|
|
event.Param.CC.Controller = Controller; |
648 |
|
|
event.Param.CC.Value = Value; |
649 |
schoenebeck |
53 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
650 |
|
|
else dmsg(1,("Engine: Input event queue full!")); |
651 |
|
|
} |
652 |
|
|
|
653 |
|
|
/** |
654 |
schoenebeck |
244 |
* Will be called by the MIDI input device whenever a MIDI system |
655 |
|
|
* exclusive message has arrived. |
656 |
|
|
* |
657 |
|
|
* @param pData - pointer to sysex data |
658 |
|
|
* @param Size - lenght of sysex data (in bytes) |
659 |
|
|
*/ |
660 |
|
|
void Engine::SendSysex(void* pData, uint Size) { |
661 |
schoenebeck |
246 |
Event event = pEventGenerator->CreateEvent(); |
662 |
|
|
event.Type = Event::type_sysex; |
663 |
|
|
event.Param.Sysex.Size = Size; |
664 |
schoenebeck |
244 |
if (pEventQueue->write_space() > 0) { |
665 |
|
|
if (pSysexBuffer->write_space() >= Size) { |
666 |
|
|
// copy sysex data to input buffer |
667 |
|
|
uint toWrite = Size; |
668 |
|
|
uint8_t* pPos = (uint8_t*) pData; |
669 |
|
|
while (toWrite) { |
670 |
|
|
const uint writeNow = RTMath::Min(toWrite, pSysexBuffer->write_space_to_end()); |
671 |
|
|
pSysexBuffer->write(pPos, writeNow); |
672 |
|
|
toWrite -= writeNow; |
673 |
|
|
pPos += writeNow; |
674 |
|
|
|
675 |
|
|
} |
676 |
|
|
// finally place sysex event into input event queue |
677 |
|
|
pEventQueue->push(&event); |
678 |
|
|
} |
679 |
|
|
else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,SYSEX_BUFFER_SIZE)); |
680 |
|
|
} |
681 |
|
|
else dmsg(1,("Engine: Input event queue full!")); |
682 |
|
|
} |
683 |
|
|
|
684 |
|
|
/** |
685 |
schoenebeck |
53 |
* Assigns and triggers a new voice for the respective MIDI key. |
686 |
|
|
* |
687 |
schoenebeck |
271 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
688 |
schoenebeck |
53 |
*/ |
689 |
schoenebeck |
271 |
void Engine::ProcessNoteOn(Pool<Event>::Iterator& itNoteOnEvent) { |
690 |
schoenebeck |
53 |
|
691 |
schoenebeck |
354 |
const int key = itNoteOnEvent->Param.Note.Key; |
692 |
|
|
|
693 |
|
|
// Change key dimension value if key is in keyswitching area |
694 |
|
|
if (key >= pInstrument->DimensionKeyRange.low && key <= pInstrument->DimensionKeyRange.high) |
695 |
|
|
CurrentKeyDimension = ((key - pInstrument->DimensionKeyRange.low) * 128) / |
696 |
|
|
(pInstrument->DimensionKeyRange.high - pInstrument->DimensionKeyRange.low + 1); |
697 |
|
|
|
698 |
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[key]; |
699 |
|
|
|
700 |
schoenebeck |
53 |
pKey->KeyPressed = true; // the MIDI key was now pressed down |
701 |
|
|
|
702 |
|
|
// cancel release process of voices on this key if needed |
703 |
|
|
if (pKey->Active && !SustainPedal) { |
704 |
schoenebeck |
271 |
RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend(); |
705 |
|
|
if (itCancelReleaseEvent) { |
706 |
|
|
*itCancelReleaseEvent = *itNoteOnEvent; // copy event |
707 |
|
|
itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type |
708 |
schoenebeck |
239 |
} |
709 |
|
|
else dmsg(1,("Event pool emtpy!\n")); |
710 |
schoenebeck |
53 |
} |
711 |
|
|
|
712 |
schoenebeck |
271 |
// move note on event to the key's own event list |
713 |
|
|
RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents); |
714 |
|
|
|
715 |
schoenebeck |
233 |
// allocate and trigger a new voice for the key |
716 |
schoenebeck |
287 |
LaunchVoice(itNoteOnEventOnKeyList, 0, false, true); |
717 |
schoenebeck |
53 |
} |
718 |
|
|
|
719 |
|
|
/** |
720 |
|
|
* Releases the voices on the given key if sustain pedal is not pressed. |
721 |
|
|
* If sustain is pressed, the release of the note will be postponed until |
722 |
|
|
* sustain pedal will be released or voice turned inactive by itself (e.g. |
723 |
|
|
* due to completion of sample playback). |
724 |
|
|
* |
725 |
schoenebeck |
271 |
* @param itNoteOffEvent - key, velocity and time stamp of the event |
726 |
schoenebeck |
53 |
*/ |
727 |
schoenebeck |
271 |
void Engine::ProcessNoteOff(Pool<Event>::Iterator& itNoteOffEvent) { |
728 |
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key]; |
729 |
schoenebeck |
53 |
|
730 |
|
|
pKey->KeyPressed = false; // the MIDI key was now released |
731 |
|
|
|
732 |
|
|
// release voices on this key if needed |
733 |
|
|
if (pKey->Active && !SustainPedal) { |
734 |
schoenebeck |
271 |
itNoteOffEvent->Type = Event::type_release; // transform event type |
735 |
schoenebeck |
53 |
} |
736 |
schoenebeck |
242 |
|
737 |
schoenebeck |
271 |
// move event to the key's own event list |
738 |
|
|
RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents); |
739 |
|
|
|
740 |
schoenebeck |
242 |
// spawn release triggered voice(s) if needed |
741 |
|
|
if (pKey->ReleaseTrigger) { |
742 |
schoenebeck |
287 |
LaunchVoice(itNoteOffEventOnKeyList, 0, true, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples |
743 |
schoenebeck |
242 |
pKey->ReleaseTrigger = false; |
744 |
|
|
} |
745 |
schoenebeck |
53 |
} |
746 |
|
|
|
747 |
|
|
/** |
748 |
|
|
* Moves pitchbend event from the general (input) event list to the pitch |
749 |
|
|
* event list. |
750 |
|
|
* |
751 |
schoenebeck |
271 |
* @param itPitchbendEvent - absolute pitch value and time stamp of the event |
752 |
schoenebeck |
53 |
*/ |
753 |
schoenebeck |
271 |
void Engine::ProcessPitchbend(Pool<Event>::Iterator& itPitchbendEvent) { |
754 |
|
|
this->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value |
755 |
|
|
itPitchbendEvent.moveToEndOf(pSynthesisEvents[Event::destination_vco]); |
756 |
schoenebeck |
53 |
} |
757 |
|
|
|
758 |
|
|
/** |
759 |
schoenebeck |
233 |
* Allocates and triggers a new voice. This method will usually be |
760 |
|
|
* called by the ProcessNoteOn() method and by the voices itself |
761 |
|
|
* (e.g. to spawn further voices on the same key for layered sounds). |
762 |
|
|
* |
763 |
schoenebeck |
271 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
764 |
schoenebeck |
242 |
* @param iLayer - layer index for the new voice (optional - only |
765 |
|
|
* in case of layered sounds of course) |
766 |
|
|
* @param ReleaseTriggerVoice - if new voice is a release triggered voice |
767 |
|
|
* (optional, default = false) |
768 |
schoenebeck |
250 |
* @param VoiceStealing - if voice stealing should be performed |
769 |
|
|
* when there is no free voice |
770 |
|
|
* (optional, default = true) |
771 |
|
|
* @returns pointer to new voice or NULL if there was no free voice or |
772 |
schoenebeck |
354 |
* if the voice wasn't triggered (for example when no region is |
773 |
|
|
* defined for the given key). |
774 |
schoenebeck |
233 |
*/ |
775 |
schoenebeck |
271 |
Pool<Voice>::Iterator Engine::LaunchVoice(Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing) { |
776 |
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key]; |
777 |
schoenebeck |
233 |
|
778 |
|
|
// allocate a new voice for the key |
779 |
schoenebeck |
271 |
Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend(); |
780 |
|
|
if (itNewVoice) { |
781 |
schoenebeck |
233 |
// launch the new voice |
782 |
schoenebeck |
287 |
if (itNewVoice->Trigger(itNoteOnEvent, this->Pitch, this->pInstrument, iLayer, ReleaseTriggerVoice, VoiceStealing) < 0) { |
783 |
schoenebeck |
354 |
dmsg(4,("Voice not triggered\n")); |
784 |
schoenebeck |
271 |
pKey->pActiveVoices->free(itNewVoice); |
785 |
schoenebeck |
233 |
} |
786 |
schoenebeck |
239 |
else { // on success |
787 |
|
|
uint** ppKeyGroup = NULL; |
788 |
schoenebeck |
271 |
if (itNewVoice->KeyGroup) { // if this voice / key belongs to a key group |
789 |
|
|
ppKeyGroup = &ActiveKeyGroups[itNewVoice->KeyGroup]; |
790 |
schoenebeck |
239 |
if (*ppKeyGroup) { // if there's already an active key in that key group |
791 |
|
|
midi_key_info_t* pOtherKey = &pMIDIKeyInfo[**ppKeyGroup]; |
792 |
|
|
// kill all voices on the (other) key |
793 |
schoenebeck |
271 |
RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first(); |
794 |
|
|
RTList<Voice>::Iterator end = pOtherKey->pActiveVoices->end(); |
795 |
|
|
for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) { |
796 |
|
|
if (itVoiceToBeKilled->Type != Voice::type_release_trigger) itVoiceToBeKilled->Kill(itNoteOnEvent); |
797 |
schoenebeck |
242 |
} |
798 |
schoenebeck |
239 |
} |
799 |
|
|
} |
800 |
|
|
if (!pKey->Active) { // mark as active key |
801 |
|
|
pKey->Active = true; |
802 |
schoenebeck |
271 |
pKey->itSelf = pActiveKeys->allocAppend(); |
803 |
|
|
*pKey->itSelf = itNoteOnEvent->Param.Note.Key; |
804 |
schoenebeck |
239 |
} |
805 |
schoenebeck |
271 |
if (itNewVoice->KeyGroup) { |
806 |
|
|
*ppKeyGroup = &*pKey->itSelf; // put key as the (new) active key to its key group |
807 |
schoenebeck |
239 |
} |
808 |
schoenebeck |
271 |
if (itNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s) |
809 |
|
|
return itNewVoice; // success |
810 |
schoenebeck |
233 |
} |
811 |
|
|
} |
812 |
schoenebeck |
285 |
else if (VoiceStealing) { |
813 |
|
|
// first, get total amount of required voices (dependant on amount of layers) |
814 |
|
|
::gig::Region* pRegion = pInstrument->GetRegion(itNoteOnEvent->Param.Note.Key); |
815 |
|
|
if (!pRegion) return Pool<Voice>::Iterator(); // nothing defined for this MIDI key, so no voice needed |
816 |
|
|
int voicesRequired = pRegion->Layers; |
817 |
schoenebeck |
250 |
|
818 |
schoenebeck |
285 |
// now steal the (remaining) amount of voices |
819 |
|
|
for (int i = iLayer; i < voicesRequired; i++) |
820 |
|
|
StealVoice(itNoteOnEvent); |
821 |
|
|
|
822 |
|
|
// put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died |
823 |
|
|
RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend(); |
824 |
|
|
if (itStealEvent) { |
825 |
|
|
*itStealEvent = *itNoteOnEvent; // copy event |
826 |
|
|
itStealEvent->Param.Note.Layer = iLayer; |
827 |
|
|
itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice; |
828 |
|
|
} |
829 |
|
|
else dmsg(1,("Voice stealing queue full!\n")); |
830 |
|
|
} |
831 |
|
|
|
832 |
schoenebeck |
271 |
return Pool<Voice>::Iterator(); // no free voice or error |
833 |
schoenebeck |
233 |
} |
834 |
|
|
|
835 |
|
|
/** |
836 |
schoenebeck |
250 |
* Will be called by LaunchVoice() method in case there are no free |
837 |
|
|
* voices left. This method will select and kill one old voice for |
838 |
|
|
* voice stealing and postpone the note-on event until the selected |
839 |
|
|
* voice actually died. |
840 |
|
|
* |
841 |
schoenebeck |
285 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
842 |
schoenebeck |
250 |
*/ |
843 |
schoenebeck |
285 |
void Engine::StealVoice(Pool<Event>::Iterator& itNoteOnEvent) { |
844 |
schoenebeck |
271 |
if (!pEventPool->poolIsEmpty()) { |
845 |
schoenebeck |
250 |
|
846 |
schoenebeck |
271 |
RTList<uint>::Iterator iuiOldestKey; |
847 |
|
|
RTList<Voice>::Iterator itOldestVoice; |
848 |
schoenebeck |
250 |
|
849 |
|
|
// Select one voice for voice stealing |
850 |
|
|
switch (VOICE_STEAL_ALGORITHM) { |
851 |
|
|
|
852 |
|
|
// try to pick the oldest voice on the key where the new |
853 |
|
|
// voice should be spawned, if there is no voice on that |
854 |
|
|
// key, or no voice left to kill there, then procceed with |
855 |
|
|
// 'oldestkey' algorithm |
856 |
|
|
case voice_steal_algo_keymask: { |
857 |
schoenebeck |
271 |
midi_key_info_t* pOldestKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key]; |
858 |
|
|
if (itLastStolenVoice) { |
859 |
|
|
itOldestVoice = itLastStolenVoice; |
860 |
|
|
++itOldestVoice; |
861 |
schoenebeck |
250 |
} |
862 |
|
|
else { // no voice stolen in this audio fragment cycle yet |
863 |
schoenebeck |
271 |
itOldestVoice = pOldestKey->pActiveVoices->first(); |
864 |
schoenebeck |
250 |
} |
865 |
schoenebeck |
271 |
if (itOldestVoice) { |
866 |
|
|
iuiOldestKey = pOldestKey->itSelf; |
867 |
schoenebeck |
250 |
break; // selection succeeded |
868 |
|
|
} |
869 |
|
|
} // no break - intentional ! |
870 |
|
|
|
871 |
|
|
// try to pick the oldest voice on the oldest active key |
872 |
|
|
// (caution: must stay after 'keymask' algorithm !) |
873 |
|
|
case voice_steal_algo_oldestkey: { |
874 |
schoenebeck |
271 |
if (itLastStolenVoice) { |
875 |
|
|
midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiLastStolenKey]; |
876 |
|
|
itOldestVoice = itLastStolenVoice; |
877 |
|
|
++itOldestVoice; |
878 |
|
|
if (!itOldestVoice) { |
879 |
|
|
iuiOldestKey = iuiLastStolenKey; |
880 |
|
|
++iuiOldestKey; |
881 |
|
|
if (iuiOldestKey) { |
882 |
|
|
midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiOldestKey]; |
883 |
|
|
itOldestVoice = pOldestKey->pActiveVoices->first(); |
884 |
schoenebeck |
250 |
} |
885 |
schoenebeck |
285 |
else { |
886 |
|
|
dmsg(1,("gig::Engine: Warning, too less voices, even for voice stealing! - Better recompile with higher MAX_AUDIO_VOICES.\n")); |
887 |
schoenebeck |
250 |
return; |
888 |
|
|
} |
889 |
|
|
} |
890 |
schoenebeck |
271 |
else iuiOldestKey = iuiLastStolenKey; |
891 |
schoenebeck |
250 |
} |
892 |
|
|
else { // no voice stolen in this audio fragment cycle yet |
893 |
schoenebeck |
271 |
iuiOldestKey = pActiveKeys->first(); |
894 |
|
|
midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiOldestKey]; |
895 |
|
|
itOldestVoice = pOldestKey->pActiveVoices->first(); |
896 |
schoenebeck |
250 |
} |
897 |
|
|
break; |
898 |
|
|
} |
899 |
|
|
|
900 |
|
|
// don't steal anything |
901 |
|
|
case voice_steal_algo_none: |
902 |
|
|
default: { |
903 |
|
|
dmsg(1,("No free voice (voice stealing disabled)!\n")); |
904 |
|
|
return; |
905 |
|
|
} |
906 |
|
|
} |
907 |
|
|
|
908 |
schoenebeck |
287 |
//FIXME: can be removed, just a sanity check for debugging |
909 |
|
|
if (!itOldestVoice->IsActive()) dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n")); |
910 |
|
|
|
911 |
schoenebeck |
250 |
// now kill the selected voice |
912 |
schoenebeck |
271 |
itOldestVoice->Kill(itNoteOnEvent); |
913 |
schoenebeck |
250 |
// remember which voice on which key we stole, so we can simply proceed for the next voice stealing |
914 |
schoenebeck |
271 |
this->itLastStolenVoice = itOldestVoice; |
915 |
|
|
this->iuiLastStolenKey = iuiOldestKey; |
916 |
schoenebeck |
250 |
} |
917 |
|
|
else dmsg(1,("Event pool emtpy!\n")); |
918 |
|
|
} |
919 |
|
|
|
920 |
|
|
/** |
921 |
schoenebeck |
285 |
* Removes the given voice from the MIDI key's list of active voices. |
922 |
|
|
* This method will be called when a voice went inactive, e.g. because |
923 |
|
|
* it finished to playback its sample, finished its release stage or |
924 |
|
|
* just was killed. |
925 |
schoenebeck |
53 |
* |
926 |
schoenebeck |
285 |
* @param itVoice - points to the voice to be freed |
927 |
schoenebeck |
53 |
*/ |
928 |
schoenebeck |
285 |
void Engine::FreeVoice(Pool<Voice>::Iterator& itVoice) { |
929 |
schoenebeck |
271 |
if (itVoice) { |
930 |
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[itVoice->MIDIKey]; |
931 |
schoenebeck |
53 |
|
932 |
schoenebeck |
271 |
uint keygroup = itVoice->KeyGroup; |
933 |
|
|
|
934 |
schoenebeck |
53 |
// free the voice object |
935 |
schoenebeck |
271 |
pVoicePool->free(itVoice); |
936 |
schoenebeck |
53 |
|
937 |
schoenebeck |
287 |
// if no other voices left and member of a key group, remove from key group |
938 |
|
|
if (pKey->pActiveVoices->isEmpty() && keygroup) { |
939 |
|
|
uint** ppKeyGroup = &ActiveKeyGroups[keygroup]; |
940 |
|
|
if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group |
941 |
schoenebeck |
53 |
} |
942 |
|
|
} |
943 |
schoenebeck |
285 |
else std::cerr << "Couldn't release voice! (!itVoice)\n" << std::flush; |
944 |
schoenebeck |
53 |
} |
945 |
|
|
|
946 |
|
|
/** |
947 |
schoenebeck |
287 |
* Called when there's no more voice left on a key, this call will |
948 |
|
|
* update the key info respectively. |
949 |
|
|
* |
950 |
|
|
* @param pKey - key which is now inactive |
951 |
|
|
*/ |
952 |
|
|
void Engine::FreeKey(midi_key_info_t* pKey) { |
953 |
|
|
if (pKey->pActiveVoices->isEmpty()) { |
954 |
|
|
pKey->Active = false; |
955 |
|
|
pActiveKeys->free(pKey->itSelf); // remove key from list of active keys |
956 |
|
|
pKey->itSelf = RTList<uint>::Iterator(); |
957 |
|
|
pKey->ReleaseTrigger = false; |
958 |
|
|
pKey->pEvents->clear(); |
959 |
|
|
dmsg(3,("Key has no more voices now\n")); |
960 |
|
|
} |
961 |
|
|
else dmsg(1,("gig::Engine: Oops, tried to free a key which contains voices.\n")); |
962 |
|
|
} |
963 |
|
|
|
964 |
|
|
/** |
965 |
schoenebeck |
53 |
* Reacts on supported control change commands (e.g. pitch bend wheel, |
966 |
|
|
* modulation wheel, aftertouch). |
967 |
|
|
* |
968 |
schoenebeck |
271 |
* @param itControlChangeEvent - controller, value and time stamp of the event |
969 |
schoenebeck |
53 |
*/ |
970 |
schoenebeck |
271 |
void Engine::ProcessControlChange(Pool<Event>::Iterator& itControlChangeEvent) { |
971 |
|
|
dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value)); |
972 |
schoenebeck |
53 |
|
973 |
schoenebeck |
271 |
switch (itControlChangeEvent->Param.CC.Controller) { |
974 |
schoenebeck |
53 |
case 64: { |
975 |
schoenebeck |
271 |
if (itControlChangeEvent->Param.CC.Value >= 64 && !SustainPedal) { |
976 |
schoenebeck |
53 |
dmsg(4,("PEDAL DOWN\n")); |
977 |
|
|
SustainPedal = true; |
978 |
|
|
|
979 |
|
|
// cancel release process of voices if necessary |
980 |
schoenebeck |
271 |
RTList<uint>::Iterator iuiKey = pActiveKeys->first(); |
981 |
|
|
if (iuiKey) { |
982 |
|
|
itControlChangeEvent->Type = Event::type_cancel_release; // transform event type |
983 |
|
|
while (iuiKey) { |
984 |
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey]; |
985 |
|
|
++iuiKey; |
986 |
schoenebeck |
53 |
if (!pKey->KeyPressed) { |
987 |
schoenebeck |
271 |
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
988 |
|
|
if (itNewEvent) *itNewEvent = *itControlChangeEvent; // copy event to the key's own event list |
989 |
schoenebeck |
53 |
else dmsg(1,("Event pool emtpy!\n")); |
990 |
|
|
} |
991 |
|
|
} |
992 |
|
|
} |
993 |
|
|
} |
994 |
schoenebeck |
271 |
if (itControlChangeEvent->Param.CC.Value < 64 && SustainPedal) { |
995 |
schoenebeck |
53 |
dmsg(4,("PEDAL UP\n")); |
996 |
|
|
SustainPedal = false; |
997 |
|
|
|
998 |
|
|
// release voices if their respective key is not pressed |
999 |
schoenebeck |
271 |
RTList<uint>::Iterator iuiKey = pActiveKeys->first(); |
1000 |
|
|
if (iuiKey) { |
1001 |
|
|
itControlChangeEvent->Type = Event::type_release; // transform event type |
1002 |
|
|
while (iuiKey) { |
1003 |
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey]; |
1004 |
|
|
++iuiKey; |
1005 |
schoenebeck |
53 |
if (!pKey->KeyPressed) { |
1006 |
schoenebeck |
271 |
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
1007 |
|
|
if (itNewEvent) *itNewEvent = *itControlChangeEvent; // copy event to the key's own event list |
1008 |
schoenebeck |
53 |
else dmsg(1,("Event pool emtpy!\n")); |
1009 |
|
|
} |
1010 |
|
|
} |
1011 |
|
|
} |
1012 |
|
|
} |
1013 |
|
|
break; |
1014 |
|
|
} |
1015 |
|
|
} |
1016 |
|
|
|
1017 |
|
|
// update controller value in the engine's controller table |
1018 |
schoenebeck |
271 |
ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value; |
1019 |
schoenebeck |
53 |
|
1020 |
|
|
// move event from the unsorted event list to the control change event list |
1021 |
schoenebeck |
271 |
itControlChangeEvent.moveToEndOf(pCCEvents); |
1022 |
schoenebeck |
53 |
} |
1023 |
|
|
|
1024 |
|
|
/** |
1025 |
schoenebeck |
244 |
* Reacts on MIDI system exclusive messages. |
1026 |
|
|
* |
1027 |
schoenebeck |
271 |
* @param itSysexEvent - sysex data size and time stamp of the sysex event |
1028 |
schoenebeck |
244 |
*/ |
1029 |
schoenebeck |
271 |
void Engine::ProcessSysex(Pool<Event>::Iterator& itSysexEvent) { |
1030 |
schoenebeck |
244 |
RingBuffer<uint8_t>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader(); |
1031 |
|
|
|
1032 |
|
|
uint8_t exclusive_status, id; |
1033 |
|
|
if (!reader.pop(&exclusive_status)) goto free_sysex_data; |
1034 |
|
|
if (!reader.pop(&id)) goto free_sysex_data; |
1035 |
|
|
if (exclusive_status != 0xF0) goto free_sysex_data; |
1036 |
|
|
|
1037 |
|
|
switch (id) { |
1038 |
|
|
case 0x41: { // Roland |
1039 |
|
|
uint8_t device_id, model_id, cmd_id; |
1040 |
|
|
if (!reader.pop(&device_id)) goto free_sysex_data; |
1041 |
|
|
if (!reader.pop(&model_id)) goto free_sysex_data; |
1042 |
|
|
if (!reader.pop(&cmd_id)) goto free_sysex_data; |
1043 |
|
|
if (model_id != 0x42 /*GS*/) goto free_sysex_data; |
1044 |
|
|
if (cmd_id != 0x12 /*DT1*/) goto free_sysex_data; |
1045 |
|
|
|
1046 |
|
|
// command address |
1047 |
|
|
uint8_t addr[3]; // 2 byte addr MSB, followed by 1 byte addr LSB) |
1048 |
|
|
const RingBuffer<uint8_t>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later |
1049 |
|
|
if (reader.read(&addr[0], 3) != 3) goto free_sysex_data; |
1050 |
|
|
if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters |
1051 |
|
|
} |
1052 |
|
|
else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters |
1053 |
|
|
} |
1054 |
|
|
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1) |
1055 |
|
|
switch (addr[3]) { |
1056 |
|
|
case 0x40: { // scale tuning |
1057 |
|
|
uint8_t scale_tunes[12]; // detuning of all 12 semitones of an octave |
1058 |
|
|
if (reader.read(&scale_tunes[0], 12) != 12) goto free_sysex_data; |
1059 |
|
|
uint8_t checksum; |
1060 |
|
|
if (!reader.pop(&checksum)) goto free_sysex_data; |
1061 |
|
|
if (GSCheckSum(checksum_reader, 12) != checksum) goto free_sysex_data; |
1062 |
|
|
for (int i = 0; i < 12; i++) scale_tunes[i] -= 64; |
1063 |
|
|
AdjustScale((int8_t*) scale_tunes); |
1064 |
|
|
break; |
1065 |
|
|
} |
1066 |
|
|
} |
1067 |
|
|
} |
1068 |
|
|
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2) |
1069 |
|
|
} |
1070 |
|
|
else if (addr[0] == 0x41) { // Drum Setup Parameters |
1071 |
|
|
} |
1072 |
|
|
break; |
1073 |
|
|
} |
1074 |
|
|
} |
1075 |
|
|
|
1076 |
|
|
free_sysex_data: // finally free sysex data |
1077 |
schoenebeck |
271 |
pSysexBuffer->increment_read_ptr(itSysexEvent->Param.Sysex.Size); |
1078 |
schoenebeck |
244 |
} |
1079 |
|
|
|
1080 |
|
|
/** |
1081 |
|
|
* Calculates the Roland GS sysex check sum. |
1082 |
|
|
* |
1083 |
|
|
* @param AddrReader - reader which currently points to the first GS |
1084 |
|
|
* command address byte of the GS sysex message in |
1085 |
|
|
* question |
1086 |
|
|
* @param DataSize - size of the GS message data (in bytes) |
1087 |
|
|
*/ |
1088 |
|
|
uint8_t Engine::GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize) { |
1089 |
|
|
RingBuffer<uint8_t>::NonVolatileReader reader = AddrReader; |
1090 |
|
|
uint bytes = 3 /*addr*/ + DataSize; |
1091 |
|
|
uint8_t addr_and_data[bytes]; |
1092 |
|
|
reader.read(&addr_and_data[0], bytes); |
1093 |
|
|
uint8_t sum = 0; |
1094 |
|
|
for (uint i = 0; i < bytes; i++) sum += addr_and_data[i]; |
1095 |
|
|
return 128 - sum % 128; |
1096 |
|
|
} |
1097 |
|
|
|
1098 |
|
|
/** |
1099 |
|
|
* Allows to tune each of the twelve semitones of an octave. |
1100 |
|
|
* |
1101 |
|
|
* @param ScaleTunes - detuning of all twelve semitones (in cents) |
1102 |
|
|
*/ |
1103 |
|
|
void Engine::AdjustScale(int8_t ScaleTunes[12]) { |
1104 |
|
|
memcpy(&this->ScaleTuning[0], &ScaleTunes[0], 12); //TODO: currently not sample accurate |
1105 |
|
|
} |
1106 |
|
|
|
1107 |
|
|
/** |
1108 |
schoenebeck |
53 |
* Initialize the parameter sequence for the modulation destination given by |
1109 |
|
|
* by 'dst' with the constant value given by val. |
1110 |
|
|
*/ |
1111 |
|
|
void Engine::ResetSynthesisParameters(Event::destination_t dst, float val) { |
1112 |
|
|
int maxsamples = pAudioOutputDevice->MaxSamplesPerCycle(); |
1113 |
schoenebeck |
80 |
float* m = &pSynthesisParameters[dst][0]; |
1114 |
|
|
for (int i = 0; i < maxsamples; i += 4) { |
1115 |
|
|
m[i] = val; |
1116 |
|
|
m[i+1] = val; |
1117 |
|
|
m[i+2] = val; |
1118 |
|
|
m[i+3] = val; |
1119 |
|
|
} |
1120 |
schoenebeck |
53 |
} |
1121 |
|
|
|
1122 |
|
|
float Engine::Volume() { |
1123 |
|
|
return GlobalVolume; |
1124 |
|
|
} |
1125 |
|
|
|
1126 |
|
|
void Engine::Volume(float f) { |
1127 |
|
|
GlobalVolume = f; |
1128 |
|
|
} |
1129 |
|
|
|
1130 |
schoenebeck |
225 |
uint Engine::Channels() { |
1131 |
|
|
return 2; |
1132 |
|
|
} |
1133 |
|
|
|
1134 |
|
|
void Engine::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) { |
1135 |
|
|
AudioChannel* pChannel = pAudioOutputDevice->Channel(AudioDeviceChannel); |
1136 |
|
|
if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel)); |
1137 |
|
|
switch (EngineAudioChannel) { |
1138 |
|
|
case 0: // left output channel |
1139 |
|
|
pOutputLeft = pChannel->Buffer(); |
1140 |
|
|
AudioDeviceChannelLeft = AudioDeviceChannel; |
1141 |
|
|
break; |
1142 |
|
|
case 1: // right output channel |
1143 |
|
|
pOutputRight = pChannel->Buffer(); |
1144 |
|
|
AudioDeviceChannelRight = AudioDeviceChannel; |
1145 |
|
|
break; |
1146 |
|
|
default: |
1147 |
|
|
throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel)); |
1148 |
|
|
} |
1149 |
|
|
} |
1150 |
|
|
|
1151 |
|
|
int Engine::OutputChannel(uint EngineAudioChannel) { |
1152 |
|
|
switch (EngineAudioChannel) { |
1153 |
|
|
case 0: // left channel |
1154 |
|
|
return AudioDeviceChannelLeft; |
1155 |
|
|
case 1: // right channel |
1156 |
|
|
return AudioDeviceChannelRight; |
1157 |
|
|
default: |
1158 |
|
|
throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel)); |
1159 |
|
|
} |
1160 |
|
|
} |
1161 |
|
|
|
1162 |
schoenebeck |
53 |
uint Engine::VoiceCount() { |
1163 |
|
|
return ActiveVoiceCount; |
1164 |
|
|
} |
1165 |
|
|
|
1166 |
|
|
uint Engine::VoiceCountMax() { |
1167 |
|
|
return ActiveVoiceCountMax; |
1168 |
|
|
} |
1169 |
|
|
|
1170 |
|
|
bool Engine::DiskStreamSupported() { |
1171 |
|
|
return true; |
1172 |
|
|
} |
1173 |
|
|
|
1174 |
|
|
uint Engine::DiskStreamCount() { |
1175 |
|
|
return (pDiskThread) ? pDiskThread->ActiveStreamCount : 0; |
1176 |
|
|
} |
1177 |
|
|
|
1178 |
|
|
uint Engine::DiskStreamCountMax() { |
1179 |
|
|
return (pDiskThread) ? pDiskThread->ActiveStreamCountMax : 0; |
1180 |
|
|
} |
1181 |
|
|
|
1182 |
|
|
String Engine::DiskStreamBufferFillBytes() { |
1183 |
|
|
return pDiskThread->GetBufferFillBytes(); |
1184 |
|
|
} |
1185 |
|
|
|
1186 |
|
|
String Engine::DiskStreamBufferFillPercentage() { |
1187 |
|
|
return pDiskThread->GetBufferFillPercentage(); |
1188 |
|
|
} |
1189 |
|
|
|
1190 |
senkov |
112 |
String Engine::EngineName() { |
1191 |
|
|
return "GigEngine"; |
1192 |
|
|
} |
1193 |
|
|
|
1194 |
|
|
String Engine::InstrumentFileName() { |
1195 |
|
|
return InstrumentFile; |
1196 |
|
|
} |
1197 |
|
|
|
1198 |
senkov |
376 |
String Engine::InstrumentName() { |
1199 |
|
|
return InstrumentIdxName; |
1200 |
|
|
} |
1201 |
|
|
|
1202 |
senkov |
112 |
int Engine::InstrumentIndex() { |
1203 |
|
|
return InstrumentIdx; |
1204 |
|
|
} |
1205 |
|
|
|
1206 |
capela |
133 |
int Engine::InstrumentStatus() { |
1207 |
|
|
return InstrumentStat; |
1208 |
|
|
} |
1209 |
|
|
|
1210 |
schoenebeck |
53 |
String Engine::Description() { |
1211 |
|
|
return "Gigasampler Engine"; |
1212 |
|
|
} |
1213 |
|
|
|
1214 |
|
|
String Engine::Version() { |
1215 |
schoenebeck |
392 |
String s = "$Revision: 1.25 $"; |
1216 |
schoenebeck |
123 |
return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
1217 |
schoenebeck |
53 |
} |
1218 |
|
|
|
1219 |
|
|
}} // namespace LinuxSampler::gig |