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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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|
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#include <sstream> |
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#include "DiskThread.h" |
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#include "Voice.h" |
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|
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#include "Engine.h" |
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|
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namespace LinuxSampler { namespace gig { |
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|
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InstrumentResourceManager Engine::Instruments; |
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|
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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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pEventQueue = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT); |
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pEventPool = new RTELMemoryPool<Event>(MAX_EVENTS_PER_FRAGMENT); |
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pVoicePool = new RTELMemoryPool<Voice>(MAX_AUDIO_VOICES); |
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pActiveKeys = new RTELMemoryPool<uint>(128); |
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pEvents = new RTEList<Event>(pEventPool); |
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pCCEvents = new RTEList<Event>(pEventPool); |
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for (uint i = 0; i < Event::destination_count; i++) { |
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pSynthesisEvents[i] = new RTEList<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 RTEList<Voice>(pVoicePool); |
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pMIDIKeyInfo[i].KeyPressed = false; |
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pMIDIKeyInfo[i].Active = false; |
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pMIDIKeyInfo[i].pSelf = NULL; |
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pMIDIKeyInfo[i].pEvents = new RTEList<Event>(pEventPool); |
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} |
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for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) { |
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pVoice->SetEngine(this); |
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} |
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pVoicePool->clear(); |
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|
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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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|
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InstrumentIdx = -1; |
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InstrumentStat = -1; |
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|
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AudioDeviceChannelLeft = -1; |
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AudioDeviceChannelRight = -1; |
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|
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ResetInternal(); |
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} |
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|
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Engine::~Engine() { |
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if (pDiskThread) { |
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pDiskThread->StopThread(); |
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delete pDiskThread; |
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} |
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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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delete[] pSynthesisEvents; |
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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) delete pVoicePool; |
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if (pActiveKeys) delete pActiveKeys; |
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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]) delete[] pSynthesisParameters[0]; |
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} |
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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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|
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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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|
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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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/** |
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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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|
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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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|
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//if (wasplaying) pAudioOutputDevice->Stop(); |
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|
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ResetInternal(); |
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|
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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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/** |
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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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|
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// set all MIDI controller values to zero |
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memset(ControllerTable, 0x00, 128); |
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|
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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].pSelf = NULL; |
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} |
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|
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// reset all voices |
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for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) { |
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pVoice->Reset(); |
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} |
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pVoicePool->clear(); |
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|
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// free all active keys |
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pActiveKeys->clear(); |
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|
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// reset disk thread |
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if (pDiskThread) pDiskThread->Reset(); |
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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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|
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/** |
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* Load an instrument from a .gig file. |
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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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* @throws LinuxSamplerException on error |
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* @returns detailed description of the method call result |
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*/ |
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void Engine::LoadInstrument(const char* FileName, uint Instrument) { |
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|
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DisableAndLock(); |
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|
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ResetInternal(); // reset engine |
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|
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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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|
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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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// 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 = FileName; |
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instrid.iInstrument = Instrument; |
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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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|
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InstrumentStat = 100; |
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|
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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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|
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Enable(); |
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} |
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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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/** |
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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; |
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Enable(); |
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} |
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|
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void Engine::Connect(AudioOutputDevice* pAudioOut) { |
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pAudioOutputDevice = pAudioOut; |
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|
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ResetInternal(); |
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|
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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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|
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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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|
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// (re)create disk thread |
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if (this->pDiskThread) { |
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this->pDiskThread->StopThread(); |
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delete this->pDiskThread; |
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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")); |
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exit(EXIT_FAILURE); |
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} |
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|
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for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) { |
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pVoice->pDiskThread = this->pDiskThread; |
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dmsg(3,("d")); |
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} |
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pVoicePool->clear(); |
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|
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// (re)create event generator |
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if (pEventGenerator) delete pEventGenerator; |
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pEventGenerator = new EventGenerator(pAudioOut->SampleRate()); |
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|
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// (re)allocate synthesis parameter matrix |
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if (pSynthesisParameters[0]) delete[] pSynthesisParameters[0]; |
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pSynthesisParameters[0] = new float[Event::destination_count * pAudioOut->MaxSamplesPerCycle()]; |
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for (int dst = 1; dst < Event::destination_count; dst++) |
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pSynthesisParameters[dst] = pSynthesisParameters[dst - 1] + pAudioOut->MaxSamplesPerCycle(); |
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|
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// (re)allocate biquad filter parameter sequence |
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if (pBasicFilterParameters) delete[] pBasicFilterParameters; |
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if (pMainFilterParameters) delete[] pMainFilterParameters; |
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pBasicFilterParameters = new biquad_param_t[pAudioOut->MaxSamplesPerCycle()]; |
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pMainFilterParameters = new biquad_param_t[pAudioOut->MaxSamplesPerCycle()]; |
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|
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dmsg(1,("Starting disk thread...")); |
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pDiskThread->StartThread(); |
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dmsg(1,("OK\n")); |
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|
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for (Voice* pVoice = pVoicePool->first(); pVoice; pVoice = pVoicePool->next()) { |
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if (!pVoice->pDiskThread) { |
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dmsg(0,("Engine -> voice::trigger: !pDiskThread\n")); |
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exit(EXIT_FAILURE); |
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} |
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} |
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} |
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|
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void Engine::DisconnectAudioOutputDevice() { |
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if (pAudioOutputDevice) { // if clause to prevent disconnect loops |
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AudioOutputDevice* olddevice = pAudioOutputDevice; |
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pAudioOutputDevice = NULL; |
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olddevice->Disconnect(this); |
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AudioDeviceChannelLeft = -1; |
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AudioDeviceChannelRight = -1; |
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} |
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} |
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|
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/** |
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* Let this engine proceed to render the given amount of sample points. The |
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* calculated audio data of all voices of this engine will be placed into |
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* the engine's audio sum buffer which has to be copied and eventually be |
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* converted to the appropriate value range by the audio output class (e.g. |
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* AlsaIO or JackIO) right after. |
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* |
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* @param Samples - number of sample points to be rendered |
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* @returns 0 on success |
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*/ |
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int Engine::RenderAudio(uint Samples) { |
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dmsg(5,("RenderAudio(Samples=%d)\n", Samples)); |
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|
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// return if no instrument loaded or engine disabled |
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if (EngineDisabled.Pop()) { |
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dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe())); |
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return 0; |
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} |
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if (!pInstrument) { |
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dmsg(5,("gig::Engine: no instrument loaded\n")); |
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return 0; |
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} |
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|
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|
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// empty the event lists for the new fragment |
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pEvents->clear(); |
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pCCEvents->clear(); |
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for (uint i = 0; i < Event::destination_count; i++) { |
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pSynthesisEvents[i]->clear(); |
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} |
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|
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// read and copy events from input queue |
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Event event = pEventGenerator->CreateEvent(); |
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while (true) { |
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if (!pEventQueue->pop(&event)) break; |
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pEvents->alloc_assign(event); |
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} |
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|
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|
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// update time of start and end of this audio fragment (as events' time stamps relate to this) |
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pEventGenerator->UpdateFragmentTime(Samples); |
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|
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|
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// process events |
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Event* pNextEvent = pEvents->first(); |
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while (pNextEvent) { |
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Event* pEvent = pNextEvent; |
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pEvents->set_current(pEvent); |
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pNextEvent = pEvents->next(); |
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switch (pEvent->Type) { |
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case Event::type_note_on: |
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dmsg(5,("Audio Thread: Note on received\n")); |
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ProcessNoteOn(pEvent); |
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break; |
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case Event::type_note_off: |
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dmsg(5,("Audio Thread: Note off received\n")); |
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ProcessNoteOff(pEvent); |
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break; |
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case Event::type_control_change: |
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dmsg(5,("Audio Thread: MIDI CC received\n")); |
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ProcessControlChange(pEvent); |
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break; |
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case Event::type_pitchbend: |
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dmsg(5,("Audio Thread: Pitchbend received\n")); |
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ProcessPitchbend(pEvent); |
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break; |
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} |
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} |
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|
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|
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// render audio from all active voices |
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int active_voices = 0; |
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uint* piKey = pActiveKeys->first(); |
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while (piKey) { // iterate through all active keys |
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midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey]; |
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pActiveKeys->set_current(piKey); |
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piKey = pActiveKeys->next(); |
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|
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Voice* pVoiceNext = pKey->pActiveVoices->first(); |
426 |
while (pVoiceNext) { // iterate through all voices on this key |
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// already get next voice on key |
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Voice* pVoice = pVoiceNext; |
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pKey->pActiveVoices->set_current(pVoice); |
430 |
pVoiceNext = pKey->pActiveVoices->next(); |
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|
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// now render current voice |
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pVoice->Render(Samples); |
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if (pVoice->IsActive()) active_voices++; // still active |
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else { // voice reached end, is now inactive |
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KillVoice(pVoice); // remove voice from the list of active voices |
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} |
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} |
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pKey->pEvents->clear(); // free all events on the key |
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} |
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|
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|
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// write that to the disk thread class so that it can print it |
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// on the console for debugging purposes |
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ActiveVoiceCount = active_voices; |
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if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount; |
447 |
|
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|
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return 0; |
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} |
451 |
|
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/** |
453 |
* Will be called by the MIDIIn Thread to let the audio thread trigger a new |
454 |
* voice for the given key. |
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* |
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* @param Key - MIDI key number of the triggered key |
457 |
* @param Velocity - MIDI velocity value of the triggered key |
458 |
*/ |
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void Engine::SendNoteOn(uint8_t Key, uint8_t Velocity) { |
460 |
Event event = pEventGenerator->CreateEvent(); |
461 |
event.Type = Event::type_note_on; |
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event.Key = Key; |
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event.Velocity = Velocity; |
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if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
465 |
else dmsg(1,("Engine: Input event queue full!")); |
466 |
} |
467 |
|
468 |
/** |
469 |
* Will be called by the MIDIIn Thread to signal the audio thread to release |
470 |
* voice(s) on the given key. |
471 |
* |
472 |
* @param Key - MIDI key number of the released key |
473 |
* @param Velocity - MIDI release velocity value of the released key |
474 |
*/ |
475 |
void Engine::SendNoteOff(uint8_t Key, uint8_t Velocity) { |
476 |
Event event = pEventGenerator->CreateEvent(); |
477 |
event.Type = Event::type_note_off; |
478 |
event.Key = Key; |
479 |
event.Velocity = Velocity; |
480 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
481 |
else dmsg(1,("Engine: Input event queue full!")); |
482 |
} |
483 |
|
484 |
/** |
485 |
* Will be called by the MIDIIn Thread to signal the audio thread to change |
486 |
* the pitch value for all voices. |
487 |
* |
488 |
* @param Pitch - MIDI pitch value (-8192 ... +8191) |
489 |
*/ |
490 |
void Engine::SendPitchbend(int Pitch) { |
491 |
Event event = pEventGenerator->CreateEvent(); |
492 |
event.Type = Event::type_pitchbend; |
493 |
event.Pitch = Pitch; |
494 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
495 |
else dmsg(1,("Engine: Input event queue full!")); |
496 |
} |
497 |
|
498 |
/** |
499 |
* Will be called by the MIDIIn Thread to signal the audio thread that a |
500 |
* continuous controller value has changed. |
501 |
* |
502 |
* @param Controller - MIDI controller number of the occured control change |
503 |
* @param Value - value of the control change |
504 |
*/ |
505 |
void Engine::SendControlChange(uint8_t Controller, uint8_t Value) { |
506 |
Event event = pEventGenerator->CreateEvent(); |
507 |
event.Type = Event::type_control_change; |
508 |
event.Controller = Controller; |
509 |
event.Value = Value; |
510 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
511 |
else dmsg(1,("Engine: Input event queue full!")); |
512 |
} |
513 |
|
514 |
/** |
515 |
* Assigns and triggers a new voice for the respective MIDI key. |
516 |
* |
517 |
* @param pNoteOnEvent - key, velocity and time stamp of the event |
518 |
*/ |
519 |
void Engine::ProcessNoteOn(Event* pNoteOnEvent) { |
520 |
midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOnEvent->Key]; |
521 |
|
522 |
pKey->KeyPressed = true; // the MIDI key was now pressed down |
523 |
|
524 |
// cancel release process of voices on this key if needed |
525 |
if (pKey->Active && !SustainPedal) { |
526 |
pNoteOnEvent->Type = Event::type_cancel_release; // transform event type |
527 |
pEvents->move(pNoteOnEvent, pKey->pEvents); // move event to the key's own event list |
528 |
} |
529 |
|
530 |
// allocate a new voice for the key |
531 |
Voice* pNewVoice = pKey->pActiveVoices->alloc(); |
532 |
if (pNewVoice) { |
533 |
// launch the new voice |
534 |
if (pNewVoice->Trigger(pNoteOnEvent, this->Pitch, this->pInstrument) < 0) { |
535 |
dmsg(1,("Triggering new voice failed!\n")); |
536 |
pKey->pActiveVoices->free(pNewVoice); |
537 |
} |
538 |
else if (!pKey->Active) { // mark as active key |
539 |
pKey->Active = true; |
540 |
pKey->pSelf = pActiveKeys->alloc(); |
541 |
*pKey->pSelf = pNoteOnEvent->Key; |
542 |
} |
543 |
} |
544 |
else std::cerr << "No free voice!" << std::endl << std::flush; |
545 |
} |
546 |
|
547 |
/** |
548 |
* Releases the voices on the given key if sustain pedal is not pressed. |
549 |
* If sustain is pressed, the release of the note will be postponed until |
550 |
* sustain pedal will be released or voice turned inactive by itself (e.g. |
551 |
* due to completion of sample playback). |
552 |
* |
553 |
* @param pNoteOffEvent - key, velocity and time stamp of the event |
554 |
*/ |
555 |
void Engine::ProcessNoteOff(Event* pNoteOffEvent) { |
556 |
midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOffEvent->Key]; |
557 |
|
558 |
pKey->KeyPressed = false; // the MIDI key was now released |
559 |
|
560 |
// release voices on this key if needed |
561 |
if (pKey->Active && !SustainPedal) { |
562 |
pNoteOffEvent->Type = Event::type_release; // transform event type |
563 |
pEvents->move(pNoteOffEvent, pKey->pEvents); // move event to the key's own event list |
564 |
} |
565 |
} |
566 |
|
567 |
/** |
568 |
* Moves pitchbend event from the general (input) event list to the pitch |
569 |
* event list. |
570 |
* |
571 |
* @param pPitchbendEvent - absolute pitch value and time stamp of the event |
572 |
*/ |
573 |
void Engine::ProcessPitchbend(Event* pPitchbendEvent) { |
574 |
this->Pitch = pPitchbendEvent->Pitch; // store current pitch value |
575 |
pEvents->move(pPitchbendEvent, pSynthesisEvents[Event::destination_vco]); |
576 |
} |
577 |
|
578 |
/** |
579 |
* Immediately kills the voice given with pVoice (no matter if sustain is |
580 |
* pressed or not) and removes it from the MIDI key's list of active voice. |
581 |
* This method will e.g. be called if a voice went inactive by itself. |
582 |
* |
583 |
* @param pVoice - points to the voice to be killed |
584 |
*/ |
585 |
void Engine::KillVoice(Voice* pVoice) { |
586 |
if (pVoice) { |
587 |
if (pVoice->IsActive()) pVoice->Kill(); |
588 |
|
589 |
midi_key_info_t* pKey = &pMIDIKeyInfo[pVoice->MIDIKey]; |
590 |
|
591 |
// free the voice object |
592 |
pVoicePool->free(pVoice); |
593 |
|
594 |
// check if there are no voices left on the MIDI key and update the key info if so |
595 |
if (pKey->pActiveVoices->is_empty()) { |
596 |
pKey->Active = false; |
597 |
pActiveKeys->free(pKey->pSelf); // remove key from list of active keys |
598 |
pKey->pSelf = NULL; |
599 |
dmsg(3,("Key has no more voices now\n")); |
600 |
} |
601 |
} |
602 |
else std::cerr << "Couldn't release voice! (pVoice == NULL)\n" << std::flush; |
603 |
} |
604 |
|
605 |
/** |
606 |
* Reacts on supported control change commands (e.g. pitch bend wheel, |
607 |
* modulation wheel, aftertouch). |
608 |
* |
609 |
* @param pControlChangeEvent - controller, value and time stamp of the event |
610 |
*/ |
611 |
void Engine::ProcessControlChange(Event* pControlChangeEvent) { |
612 |
dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", pControlChangeEvent->Controller, pControlChangeEvent->Value)); |
613 |
|
614 |
switch (pControlChangeEvent->Controller) { |
615 |
case 64: { |
616 |
if (pControlChangeEvent->Value >= 64 && !SustainPedal) { |
617 |
dmsg(4,("PEDAL DOWN\n")); |
618 |
SustainPedal = true; |
619 |
|
620 |
// cancel release process of voices if necessary |
621 |
uint* piKey = pActiveKeys->first(); |
622 |
if (piKey) { |
623 |
pControlChangeEvent->Type = Event::type_cancel_release; // transform event type |
624 |
while (piKey) { |
625 |
midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey]; |
626 |
pActiveKeys->set_current(piKey); |
627 |
piKey = pActiveKeys->next(); |
628 |
if (!pKey->KeyPressed) { |
629 |
Event* pNewEvent = pKey->pEvents->alloc(); |
630 |
if (pNewEvent) *pNewEvent = *pControlChangeEvent; // copy event to the key's own event list |
631 |
else dmsg(1,("Event pool emtpy!\n")); |
632 |
} |
633 |
} |
634 |
} |
635 |
} |
636 |
if (pControlChangeEvent->Value < 64 && SustainPedal) { |
637 |
dmsg(4,("PEDAL UP\n")); |
638 |
SustainPedal = false; |
639 |
|
640 |
// release voices if their respective key is not pressed |
641 |
uint* piKey = pActiveKeys->first(); |
642 |
if (piKey) { |
643 |
pControlChangeEvent->Type = Event::type_release; // transform event type |
644 |
while (piKey) { |
645 |
midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey]; |
646 |
pActiveKeys->set_current(piKey); |
647 |
piKey = pActiveKeys->next(); |
648 |
if (!pKey->KeyPressed) { |
649 |
Event* pNewEvent = pKey->pEvents->alloc(); |
650 |
if (pNewEvent) *pNewEvent = *pControlChangeEvent; // copy event to the key's own event list |
651 |
else dmsg(1,("Event pool emtpy!\n")); |
652 |
} |
653 |
} |
654 |
} |
655 |
} |
656 |
break; |
657 |
} |
658 |
} |
659 |
|
660 |
// update controller value in the engine's controller table |
661 |
ControllerTable[pControlChangeEvent->Controller] = pControlChangeEvent->Value; |
662 |
|
663 |
// move event from the unsorted event list to the control change event list |
664 |
pEvents->move(pControlChangeEvent, pCCEvents); |
665 |
} |
666 |
|
667 |
/** |
668 |
* Initialize the parameter sequence for the modulation destination given by |
669 |
* by 'dst' with the constant value given by val. |
670 |
*/ |
671 |
void Engine::ResetSynthesisParameters(Event::destination_t dst, float val) { |
672 |
int maxsamples = pAudioOutputDevice->MaxSamplesPerCycle(); |
673 |
float* m = &pSynthesisParameters[dst][0]; |
674 |
for (int i = 0; i < maxsamples; i += 4) { |
675 |
m[i] = val; |
676 |
m[i+1] = val; |
677 |
m[i+2] = val; |
678 |
m[i+3] = val; |
679 |
} |
680 |
} |
681 |
|
682 |
float Engine::Volume() { |
683 |
return GlobalVolume; |
684 |
} |
685 |
|
686 |
void Engine::Volume(float f) { |
687 |
GlobalVolume = f; |
688 |
} |
689 |
|
690 |
uint Engine::Channels() { |
691 |
return 2; |
692 |
} |
693 |
|
694 |
void Engine::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) { |
695 |
AudioChannel* pChannel = pAudioOutputDevice->Channel(AudioDeviceChannel); |
696 |
if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel)); |
697 |
switch (EngineAudioChannel) { |
698 |
case 0: // left output channel |
699 |
pOutputLeft = pChannel->Buffer(); |
700 |
AudioDeviceChannelLeft = AudioDeviceChannel; |
701 |
break; |
702 |
case 1: // right output channel |
703 |
pOutputRight = pChannel->Buffer(); |
704 |
AudioDeviceChannelRight = AudioDeviceChannel; |
705 |
break; |
706 |
default: |
707 |
throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel)); |
708 |
} |
709 |
} |
710 |
|
711 |
int Engine::OutputChannel(uint EngineAudioChannel) { |
712 |
switch (EngineAudioChannel) { |
713 |
case 0: // left channel |
714 |
return AudioDeviceChannelLeft; |
715 |
case 1: // right channel |
716 |
return AudioDeviceChannelRight; |
717 |
default: |
718 |
throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel)); |
719 |
} |
720 |
} |
721 |
|
722 |
uint Engine::VoiceCount() { |
723 |
return ActiveVoiceCount; |
724 |
} |
725 |
|
726 |
uint Engine::VoiceCountMax() { |
727 |
return ActiveVoiceCountMax; |
728 |
} |
729 |
|
730 |
bool Engine::DiskStreamSupported() { |
731 |
return true; |
732 |
} |
733 |
|
734 |
uint Engine::DiskStreamCount() { |
735 |
return (pDiskThread) ? pDiskThread->ActiveStreamCount : 0; |
736 |
} |
737 |
|
738 |
uint Engine::DiskStreamCountMax() { |
739 |
return (pDiskThread) ? pDiskThread->ActiveStreamCountMax : 0; |
740 |
} |
741 |
|
742 |
String Engine::DiskStreamBufferFillBytes() { |
743 |
return pDiskThread->GetBufferFillBytes(); |
744 |
} |
745 |
|
746 |
String Engine::DiskStreamBufferFillPercentage() { |
747 |
return pDiskThread->GetBufferFillPercentage(); |
748 |
} |
749 |
|
750 |
String Engine::EngineName() { |
751 |
return "GigEngine"; |
752 |
} |
753 |
|
754 |
String Engine::InstrumentFileName() { |
755 |
return InstrumentFile; |
756 |
} |
757 |
|
758 |
int Engine::InstrumentIndex() { |
759 |
return InstrumentIdx; |
760 |
} |
761 |
|
762 |
int Engine::InstrumentStatus() { |
763 |
return InstrumentStat; |
764 |
} |
765 |
|
766 |
String Engine::Description() { |
767 |
return "Gigasampler Engine"; |
768 |
} |
769 |
|
770 |
String Engine::Version() { |
771 |
String s = "$Revision: 1.8 $"; |
772 |
return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
773 |
} |
774 |
|
775 |
}} // namespace LinuxSampler::gig |