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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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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 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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pVoiceStealingQueue = new RTEList<Event>(pEventPool); |
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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].ReleaseTrigger = 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 (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]) delete[] pSynthesisParameters[0]; |
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if (pVoiceStealingQueue) delete pVoiceStealingQueue; |
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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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// reset voice stealing parameters |
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pLastStolenVoice = NULL; |
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puiLastStolenKey = NULL; |
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pVoiceStealingQueue->clear(); |
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|
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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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|
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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].ReleaseTrigger = false; |
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pMIDIKeyInfo[i].pSelf = NULL; |
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} |
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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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|
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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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// delete all key groups |
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ActiveKeyGroups.clear(); |
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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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// 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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|
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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; //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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|
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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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for (uint* puiKey = pActiveKeys->first(); puiKey; puiKey = pActiveKeys->next()) { |
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midi_key_info_t* pKey = &pMIDIKeyInfo[*puiKey]; |
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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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// 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; |
411 |
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) |
416 |
pEventGenerator->UpdateFragmentTime(Samples); |
417 |
|
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|
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// process events |
420 |
Event* pNextEvent = pEvents->first(); |
421 |
while (pNextEvent) { |
422 |
Event* pEvent = pNextEvent; |
423 |
pEvents->set_current(pEvent); |
424 |
pNextEvent = pEvents->next(); |
425 |
switch (pEvent->Type) { |
426 |
case Event::type_note_on: |
427 |
dmsg(5,("Engine: Note on received\n")); |
428 |
ProcessNoteOn(pEvent); |
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break; |
430 |
case Event::type_note_off: |
431 |
dmsg(5,("Engine: Note off received\n")); |
432 |
ProcessNoteOff(pEvent); |
433 |
break; |
434 |
case Event::type_control_change: |
435 |
dmsg(5,("Engine: MIDI CC received\n")); |
436 |
ProcessControlChange(pEvent); |
437 |
break; |
438 |
case Event::type_pitchbend: |
439 |
dmsg(5,("Engine: Pitchbend received\n")); |
440 |
ProcessPitchbend(pEvent); |
441 |
break; |
442 |
case Event::type_sysex: |
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dmsg(5,("Engine: Sysex received\n")); |
444 |
ProcessSysex(pEvent); |
445 |
break; |
446 |
} |
447 |
} |
448 |
|
449 |
|
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// render audio from all active voices |
451 |
int active_voices = 0; |
452 |
uint* piKey = pActiveKeys->first(); |
453 |
while (piKey) { // iterate through all active keys |
454 |
midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey]; |
455 |
pActiveKeys->set_current(piKey); |
456 |
piKey = pActiveKeys->next(); |
457 |
|
458 |
Voice* pVoiceNext = pKey->pActiveVoices->first(); |
459 |
while (pVoiceNext) { // iterate through all voices on this key |
460 |
// already get next voice on key |
461 |
Voice* pVoice = pVoiceNext; |
462 |
pKey->pActiveVoices->set_current(pVoice); |
463 |
pVoiceNext = pKey->pActiveVoices->next(); |
464 |
|
465 |
// now render current voice |
466 |
pVoice->Render(Samples); |
467 |
if (pVoice->IsActive()) active_voices++; // still active |
468 |
else { // voice reached end, is now inactive |
469 |
KillVoiceImmediately(pVoice); // remove voice from the list of active voices |
470 |
} |
471 |
} |
472 |
} |
473 |
|
474 |
|
475 |
// now render all postponed voices from voice stealing |
476 |
Event* pVoiceStealEvent = pVoiceStealingQueue->first(); |
477 |
while (pVoiceStealEvent) { |
478 |
Voice* pNewVoice = LaunchVoice(pVoiceStealEvent, pVoiceStealEvent->Param.Note.Layer, pVoiceStealEvent->Param.Note.ReleaseTrigger, false); |
479 |
if (pNewVoice) { |
480 |
pNewVoice->Render(Samples); |
481 |
if (pNewVoice->IsActive()) active_voices++; // still active |
482 |
else { // voice reached end, is now inactive |
483 |
KillVoiceImmediately(pNewVoice); // remove voice from the list of active voices |
484 |
} |
485 |
} |
486 |
else dmsg(1,("Ouch, voice stealing didn't work out!\n")); |
487 |
pVoiceStealEvent = pVoiceStealingQueue->next(); |
488 |
} |
489 |
// reset voice stealing for the new fragment |
490 |
pVoiceStealingQueue->clear(); |
491 |
pLastStolenVoice = NULL; |
492 |
puiLastStolenKey = NULL; |
493 |
|
494 |
|
495 |
// write that to the disk thread class so that it can print it |
496 |
// on the console for debugging purposes |
497 |
ActiveVoiceCount = active_voices; |
498 |
if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount; |
499 |
|
500 |
|
501 |
return 0; |
502 |
} |
503 |
|
504 |
/** |
505 |
* Will be called by the MIDIIn Thread to let the audio thread trigger a new |
506 |
* voice for the given key. |
507 |
* |
508 |
* @param Key - MIDI key number of the triggered key |
509 |
* @param Velocity - MIDI velocity value of the triggered key |
510 |
*/ |
511 |
void Engine::SendNoteOn(uint8_t Key, uint8_t Velocity) { |
512 |
Event event = pEventGenerator->CreateEvent(); |
513 |
event.Type = Event::type_note_on; |
514 |
event.Param.Note.Key = Key; |
515 |
event.Param.Note.Velocity = Velocity; |
516 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
517 |
else dmsg(1,("Engine: Input event queue full!")); |
518 |
} |
519 |
|
520 |
/** |
521 |
* Will be called by the MIDIIn Thread to signal the audio thread to release |
522 |
* voice(s) on the given key. |
523 |
* |
524 |
* @param Key - MIDI key number of the released key |
525 |
* @param Velocity - MIDI release velocity value of the released key |
526 |
*/ |
527 |
void Engine::SendNoteOff(uint8_t Key, uint8_t Velocity) { |
528 |
Event event = pEventGenerator->CreateEvent(); |
529 |
event.Type = Event::type_note_off; |
530 |
event.Param.Note.Key = Key; |
531 |
event.Param.Note.Velocity = Velocity; |
532 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
533 |
else dmsg(1,("Engine: Input event queue full!")); |
534 |
} |
535 |
|
536 |
/** |
537 |
* Will be called by the MIDIIn Thread to signal the audio thread to change |
538 |
* the pitch value for all voices. |
539 |
* |
540 |
* @param Pitch - MIDI pitch value (-8192 ... +8191) |
541 |
*/ |
542 |
void Engine::SendPitchbend(int Pitch) { |
543 |
Event event = pEventGenerator->CreateEvent(); |
544 |
event.Type = Event::type_pitchbend; |
545 |
event.Param.Pitch.Pitch = Pitch; |
546 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
547 |
else dmsg(1,("Engine: Input event queue full!")); |
548 |
} |
549 |
|
550 |
/** |
551 |
* Will be called by the MIDIIn Thread to signal the audio thread that a |
552 |
* continuous controller value has changed. |
553 |
* |
554 |
* @param Controller - MIDI controller number of the occured control change |
555 |
* @param Value - value of the control change |
556 |
*/ |
557 |
void Engine::SendControlChange(uint8_t Controller, uint8_t Value) { |
558 |
Event event = pEventGenerator->CreateEvent(); |
559 |
event.Type = Event::type_control_change; |
560 |
event.Param.CC.Controller = Controller; |
561 |
event.Param.CC.Value = Value; |
562 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
563 |
else dmsg(1,("Engine: Input event queue full!")); |
564 |
} |
565 |
|
566 |
/** |
567 |
* Will be called by the MIDI input device whenever a MIDI system |
568 |
* exclusive message has arrived. |
569 |
* |
570 |
* @param pData - pointer to sysex data |
571 |
* @param Size - lenght of sysex data (in bytes) |
572 |
*/ |
573 |
void Engine::SendSysex(void* pData, uint Size) { |
574 |
Event event = pEventGenerator->CreateEvent(); |
575 |
event.Type = Event::type_sysex; |
576 |
event.Param.Sysex.Size = Size; |
577 |
if (pEventQueue->write_space() > 0) { |
578 |
if (pSysexBuffer->write_space() >= Size) { |
579 |
// copy sysex data to input buffer |
580 |
uint toWrite = Size; |
581 |
uint8_t* pPos = (uint8_t*) pData; |
582 |
while (toWrite) { |
583 |
const uint writeNow = RTMath::Min(toWrite, pSysexBuffer->write_space_to_end()); |
584 |
pSysexBuffer->write(pPos, writeNow); |
585 |
toWrite -= writeNow; |
586 |
pPos += writeNow; |
587 |
|
588 |
} |
589 |
// finally place sysex event into input event queue |
590 |
pEventQueue->push(&event); |
591 |
} |
592 |
else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,SYSEX_BUFFER_SIZE)); |
593 |
} |
594 |
else dmsg(1,("Engine: Input event queue full!")); |
595 |
} |
596 |
|
597 |
/** |
598 |
* Assigns and triggers a new voice for the respective MIDI key. |
599 |
* |
600 |
* @param pNoteOnEvent - key, velocity and time stamp of the event |
601 |
*/ |
602 |
void Engine::ProcessNoteOn(Event* pNoteOnEvent) { |
603 |
midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOnEvent->Param.Note.Key]; |
604 |
|
605 |
pKey->KeyPressed = true; // the MIDI key was now pressed down |
606 |
|
607 |
// cancel release process of voices on this key if needed |
608 |
if (pKey->Active && !SustainPedal) { |
609 |
Event* pCancelReleaseEvent = pKey->pEvents->alloc(); |
610 |
if (pCancelReleaseEvent) { |
611 |
*pCancelReleaseEvent = *pNoteOnEvent; |
612 |
pCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type |
613 |
} |
614 |
else dmsg(1,("Event pool emtpy!\n")); |
615 |
} |
616 |
|
617 |
// allocate and trigger a new voice for the key |
618 |
LaunchVoice(pNoteOnEvent); |
619 |
|
620 |
// finally move note on event to the key's own event list |
621 |
pEvents->move(pNoteOnEvent, pKey->pEvents); |
622 |
} |
623 |
|
624 |
/** |
625 |
* Releases the voices on the given key if sustain pedal is not pressed. |
626 |
* If sustain is pressed, the release of the note will be postponed until |
627 |
* sustain pedal will be released or voice turned inactive by itself (e.g. |
628 |
* due to completion of sample playback). |
629 |
* |
630 |
* @param pNoteOffEvent - key, velocity and time stamp of the event |
631 |
*/ |
632 |
void Engine::ProcessNoteOff(Event* pNoteOffEvent) { |
633 |
midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOffEvent->Param.Note.Key]; |
634 |
|
635 |
pKey->KeyPressed = false; // the MIDI key was now released |
636 |
|
637 |
// release voices on this key if needed |
638 |
if (pKey->Active && !SustainPedal) { |
639 |
pNoteOffEvent->Type = Event::type_release; // transform event type |
640 |
} |
641 |
|
642 |
// spawn release triggered voice(s) if needed |
643 |
if (pKey->ReleaseTrigger) { |
644 |
LaunchVoice(pNoteOffEvent, 0, true); |
645 |
pKey->ReleaseTrigger = false; |
646 |
} |
647 |
|
648 |
// move event to the key's own event list |
649 |
pEvents->move(pNoteOffEvent, pKey->pEvents); |
650 |
} |
651 |
|
652 |
/** |
653 |
* Moves pitchbend event from the general (input) event list to the pitch |
654 |
* event list. |
655 |
* |
656 |
* @param pPitchbendEvent - absolute pitch value and time stamp of the event |
657 |
*/ |
658 |
void Engine::ProcessPitchbend(Event* pPitchbendEvent) { |
659 |
this->Pitch = pPitchbendEvent->Param.Pitch.Pitch; // store current pitch value |
660 |
pEvents->move(pPitchbendEvent, pSynthesisEvents[Event::destination_vco]); |
661 |
} |
662 |
|
663 |
/** |
664 |
* Allocates and triggers a new voice. This method will usually be |
665 |
* called by the ProcessNoteOn() method and by the voices itself |
666 |
* (e.g. to spawn further voices on the same key for layered sounds). |
667 |
* |
668 |
* @param pNoteOnEvent - key, velocity and time stamp of the event |
669 |
* @param iLayer - layer index for the new voice (optional - only |
670 |
* in case of layered sounds of course) |
671 |
* @param ReleaseTriggerVoice - if new voice is a release triggered voice |
672 |
* (optional, default = false) |
673 |
* @param VoiceStealing - if voice stealing should be performed |
674 |
* when there is no free voice |
675 |
* (optional, default = true) |
676 |
* @returns pointer to new voice or NULL if there was no free voice or |
677 |
* if an error occured while trying to trigger the new voice |
678 |
*/ |
679 |
Voice* Engine::LaunchVoice(Event* pNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing) { |
680 |
midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOnEvent->Param.Note.Key]; |
681 |
|
682 |
// allocate a new voice for the key |
683 |
Voice* pNewVoice = pKey->pActiveVoices->alloc(); |
684 |
if (pNewVoice) { |
685 |
// launch the new voice |
686 |
if (pNewVoice->Trigger(pNoteOnEvent, this->Pitch, this->pInstrument, iLayer, ReleaseTriggerVoice) < 0) { |
687 |
dmsg(1,("Triggering new voice failed!\n")); |
688 |
pKey->pActiveVoices->free(pNewVoice); |
689 |
} |
690 |
else { // on success |
691 |
uint** ppKeyGroup = NULL; |
692 |
if (pNewVoice->KeyGroup) { // if this voice / key belongs to a key group |
693 |
ppKeyGroup = &ActiveKeyGroups[pNewVoice->KeyGroup]; |
694 |
if (*ppKeyGroup) { // if there's already an active key in that key group |
695 |
midi_key_info_t* pOtherKey = &pMIDIKeyInfo[**ppKeyGroup]; |
696 |
// kill all voices on the (other) key |
697 |
Voice* pVoiceToBeKilled = pOtherKey->pActiveVoices->first(); |
698 |
while (pVoiceToBeKilled) { |
699 |
Voice* pVoiceToBeKilledNext = pOtherKey->pActiveVoices->next(); |
700 |
if (pVoiceToBeKilled->Type != Voice::type_release_trigger) pVoiceToBeKilled->Kill(pNoteOnEvent); |
701 |
pOtherKey->pActiveVoices->set_current(pVoiceToBeKilled); |
702 |
pVoiceToBeKilled = pVoiceToBeKilledNext; |
703 |
} |
704 |
} |
705 |
} |
706 |
if (!pKey->Active) { // mark as active key |
707 |
pKey->Active = true; |
708 |
pKey->pSelf = pActiveKeys->alloc(); |
709 |
*pKey->pSelf = pNoteOnEvent->Param.Note.Key; |
710 |
} |
711 |
if (pNewVoice->KeyGroup) { |
712 |
*ppKeyGroup = pKey->pSelf; // put key as the (new) active key to its key group |
713 |
} |
714 |
if (pNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s) |
715 |
return pNewVoice; // success |
716 |
} |
717 |
} |
718 |
else if (VoiceStealing) StealVoice(pNoteOnEvent, iLayer, ReleaseTriggerVoice); // no free voice left, so steal one |
719 |
|
720 |
return NULL; // no free voice or error |
721 |
} |
722 |
|
723 |
/** |
724 |
* Will be called by LaunchVoice() method in case there are no free |
725 |
* voices left. This method will select and kill one old voice for |
726 |
* voice stealing and postpone the note-on event until the selected |
727 |
* voice actually died. |
728 |
* |
729 |
* @param pNoteOnEvent - key, velocity and time stamp of the event |
730 |
* @param iLayer - layer index for the new voice |
731 |
* @param ReleaseTriggerVoice - if new voice is a release triggered voice |
732 |
*/ |
733 |
void Engine::StealVoice(Event* pNoteOnEvent, int iLayer, bool ReleaseTriggerVoice) { |
734 |
if (!pEventPool->pool_is_empty()) { |
735 |
|
736 |
uint* puiOldestKey; |
737 |
Voice* pOldestVoice; |
738 |
|
739 |
// Select one voice for voice stealing |
740 |
switch (VOICE_STEAL_ALGORITHM) { |
741 |
|
742 |
// try to pick the oldest voice on the key where the new |
743 |
// voice should be spawned, if there is no voice on that |
744 |
// key, or no voice left to kill there, then procceed with |
745 |
// 'oldestkey' algorithm |
746 |
case voice_steal_algo_keymask: { |
747 |
midi_key_info_t* pOldestKey = &pMIDIKeyInfo[pNoteOnEvent->Param.Note.Key]; |
748 |
if (pLastStolenVoice) { |
749 |
pOldestKey->pActiveVoices->set_current(pLastStolenVoice); |
750 |
pOldestVoice = pOldestKey->pActiveVoices->next(); |
751 |
} |
752 |
else { // no voice stolen in this audio fragment cycle yet |
753 |
pOldestVoice = pOldestKey->pActiveVoices->first(); |
754 |
} |
755 |
if (pOldestVoice) { |
756 |
puiOldestKey = pOldestKey->pSelf; |
757 |
break; // selection succeeded |
758 |
} |
759 |
} // no break - intentional ! |
760 |
|
761 |
// try to pick the oldest voice on the oldest active key |
762 |
// (caution: must stay after 'keymask' algorithm !) |
763 |
case voice_steal_algo_oldestkey: { |
764 |
if (pLastStolenVoice) { |
765 |
midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*puiLastStolenKey]; |
766 |
pOldestKey->pActiveVoices->set_current(pLastStolenVoice); |
767 |
pOldestVoice = pOldestKey->pActiveVoices->next(); |
768 |
if (!pOldestVoice) { |
769 |
pActiveKeys->set_current(puiLastStolenKey); |
770 |
puiOldestKey = pActiveKeys->next(); |
771 |
if (puiOldestKey) { |
772 |
midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*puiOldestKey]; |
773 |
pOldestVoice = pOldestKey->pActiveVoices->first(); |
774 |
} |
775 |
else { // too less voices, even for voice stealing |
776 |
dmsg(1,("Voice overflow! - You might recompile with higher MAX_AUDIO_VOICES!\n")); |
777 |
return; |
778 |
} |
779 |
} |
780 |
else puiOldestKey = puiLastStolenKey; |
781 |
} |
782 |
else { // no voice stolen in this audio fragment cycle yet |
783 |
puiOldestKey = pActiveKeys->first(); |
784 |
midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*puiOldestKey]; |
785 |
pOldestVoice = pOldestKey->pActiveVoices->first(); |
786 |
} |
787 |
break; |
788 |
} |
789 |
|
790 |
// don't steal anything |
791 |
case voice_steal_algo_none: |
792 |
default: { |
793 |
dmsg(1,("No free voice (voice stealing disabled)!\n")); |
794 |
return; |
795 |
} |
796 |
} |
797 |
|
798 |
// now kill the selected voice |
799 |
pOldestVoice->Kill(pNoteOnEvent); |
800 |
// remember which voice on which key we stole, so we can simply proceed for the next voice stealing |
801 |
this->pLastStolenVoice = pOldestVoice; |
802 |
this->puiLastStolenKey = puiOldestKey; |
803 |
// put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died |
804 |
Event* pStealEvent = pVoiceStealingQueue->alloc(); |
805 |
*pStealEvent = *pNoteOnEvent; |
806 |
pStealEvent->Param.Note.Layer = iLayer; |
807 |
pStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice; |
808 |
} |
809 |
else dmsg(1,("Event pool emtpy!\n")); |
810 |
} |
811 |
|
812 |
/** |
813 |
* Immediately kills the voice given with pVoice (no matter if sustain is |
814 |
* pressed or not) and removes it from the MIDI key's list of active voice. |
815 |
* This method will e.g. be called if a voice went inactive by itself. |
816 |
* |
817 |
* @param pVoice - points to the voice to be killed |
818 |
*/ |
819 |
void Engine::KillVoiceImmediately(Voice* pVoice) { |
820 |
if (pVoice) { |
821 |
if (pVoice->IsActive()) pVoice->KillImmediately(); |
822 |
|
823 |
midi_key_info_t* pKey = &pMIDIKeyInfo[pVoice->MIDIKey]; |
824 |
|
825 |
// free the voice object |
826 |
pVoicePool->free(pVoice); |
827 |
|
828 |
// check if there are no voices left on the MIDI key and update the key info if so |
829 |
if (pKey->pActiveVoices->is_empty()) { |
830 |
if (pVoice->KeyGroup) { // if voice / key belongs to a key group |
831 |
uint** ppKeyGroup = &ActiveKeyGroups[pVoice->KeyGroup]; |
832 |
if (*ppKeyGroup == pKey->pSelf) *ppKeyGroup = NULL; // remove key from key group |
833 |
} |
834 |
pKey->Active = false; |
835 |
pActiveKeys->free(pKey->pSelf); // remove key from list of active keys |
836 |
pKey->pSelf = NULL; |
837 |
pKey->ReleaseTrigger = false; |
838 |
pKey->pEvents->clear(); |
839 |
dmsg(3,("Key has no more voices now\n")); |
840 |
} |
841 |
} |
842 |
else std::cerr << "Couldn't release voice! (pVoice == NULL)\n" << std::flush; |
843 |
} |
844 |
|
845 |
/** |
846 |
* Reacts on supported control change commands (e.g. pitch bend wheel, |
847 |
* modulation wheel, aftertouch). |
848 |
* |
849 |
* @param pControlChangeEvent - controller, value and time stamp of the event |
850 |
*/ |
851 |
void Engine::ProcessControlChange(Event* pControlChangeEvent) { |
852 |
dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", pControlChangeEvent->Param.CC.Controller, pControlChangeEvent->Param.CC.Value)); |
853 |
|
854 |
switch (pControlChangeEvent->Param.CC.Controller) { |
855 |
case 64: { |
856 |
if (pControlChangeEvent->Param.CC.Value >= 64 && !SustainPedal) { |
857 |
dmsg(4,("PEDAL DOWN\n")); |
858 |
SustainPedal = true; |
859 |
|
860 |
// cancel release process of voices if necessary |
861 |
uint* piKey = pActiveKeys->first(); |
862 |
if (piKey) { |
863 |
pControlChangeEvent->Type = Event::type_cancel_release; // transform event type |
864 |
while (piKey) { |
865 |
midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey]; |
866 |
pActiveKeys->set_current(piKey); |
867 |
piKey = pActiveKeys->next(); |
868 |
if (!pKey->KeyPressed) { |
869 |
Event* pNewEvent = pKey->pEvents->alloc(); |
870 |
if (pNewEvent) *pNewEvent = *pControlChangeEvent; // copy event to the key's own event list |
871 |
else dmsg(1,("Event pool emtpy!\n")); |
872 |
} |
873 |
} |
874 |
} |
875 |
} |
876 |
if (pControlChangeEvent->Param.CC.Value < 64 && SustainPedal) { |
877 |
dmsg(4,("PEDAL UP\n")); |
878 |
SustainPedal = false; |
879 |
|
880 |
// release voices if their respective key is not pressed |
881 |
uint* piKey = pActiveKeys->first(); |
882 |
if (piKey) { |
883 |
pControlChangeEvent->Type = Event::type_release; // transform event type |
884 |
while (piKey) { |
885 |
midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey]; |
886 |
pActiveKeys->set_current(piKey); |
887 |
piKey = pActiveKeys->next(); |
888 |
if (!pKey->KeyPressed) { |
889 |
Event* pNewEvent = pKey->pEvents->alloc(); |
890 |
if (pNewEvent) *pNewEvent = *pControlChangeEvent; // copy event to the key's own event list |
891 |
else dmsg(1,("Event pool emtpy!\n")); |
892 |
} |
893 |
} |
894 |
} |
895 |
} |
896 |
break; |
897 |
} |
898 |
} |
899 |
|
900 |
// update controller value in the engine's controller table |
901 |
ControllerTable[pControlChangeEvent->Param.CC.Controller] = pControlChangeEvent->Param.CC.Value; |
902 |
|
903 |
// move event from the unsorted event list to the control change event list |
904 |
pEvents->move(pControlChangeEvent, pCCEvents); |
905 |
} |
906 |
|
907 |
/** |
908 |
* Reacts on MIDI system exclusive messages. |
909 |
* |
910 |
* @param pSysexEvent - sysex data size and time stamp of the sysex event |
911 |
*/ |
912 |
void Engine::ProcessSysex(Event* pSysexEvent) { |
913 |
RingBuffer<uint8_t>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader(); |
914 |
|
915 |
uint8_t exclusive_status, id; |
916 |
if (!reader.pop(&exclusive_status)) goto free_sysex_data; |
917 |
if (!reader.pop(&id)) goto free_sysex_data; |
918 |
if (exclusive_status != 0xF0) goto free_sysex_data; |
919 |
|
920 |
switch (id) { |
921 |
case 0x41: { // Roland |
922 |
uint8_t device_id, model_id, cmd_id; |
923 |
if (!reader.pop(&device_id)) goto free_sysex_data; |
924 |
if (!reader.pop(&model_id)) goto free_sysex_data; |
925 |
if (!reader.pop(&cmd_id)) goto free_sysex_data; |
926 |
if (model_id != 0x42 /*GS*/) goto free_sysex_data; |
927 |
if (cmd_id != 0x12 /*DT1*/) goto free_sysex_data; |
928 |
|
929 |
// command address |
930 |
uint8_t addr[3]; // 2 byte addr MSB, followed by 1 byte addr LSB) |
931 |
const RingBuffer<uint8_t>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later |
932 |
if (reader.read(&addr[0], 3) != 3) goto free_sysex_data; |
933 |
if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters |
934 |
} |
935 |
else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters |
936 |
} |
937 |
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1) |
938 |
switch (addr[3]) { |
939 |
case 0x40: { // scale tuning |
940 |
uint8_t scale_tunes[12]; // detuning of all 12 semitones of an octave |
941 |
if (reader.read(&scale_tunes[0], 12) != 12) goto free_sysex_data; |
942 |
uint8_t checksum; |
943 |
if (!reader.pop(&checksum)) goto free_sysex_data; |
944 |
if (GSCheckSum(checksum_reader, 12) != checksum) goto free_sysex_data; |
945 |
for (int i = 0; i < 12; i++) scale_tunes[i] -= 64; |
946 |
AdjustScale((int8_t*) scale_tunes); |
947 |
break; |
948 |
} |
949 |
} |
950 |
} |
951 |
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2) |
952 |
} |
953 |
else if (addr[0] == 0x41) { // Drum Setup Parameters |
954 |
} |
955 |
break; |
956 |
} |
957 |
} |
958 |
|
959 |
free_sysex_data: // finally free sysex data |
960 |
pSysexBuffer->increment_read_ptr(pSysexEvent->Param.Sysex.Size); |
961 |
} |
962 |
|
963 |
/** |
964 |
* Calculates the Roland GS sysex check sum. |
965 |
* |
966 |
* @param AddrReader - reader which currently points to the first GS |
967 |
* command address byte of the GS sysex message in |
968 |
* question |
969 |
* @param DataSize - size of the GS message data (in bytes) |
970 |
*/ |
971 |
uint8_t Engine::GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize) { |
972 |
RingBuffer<uint8_t>::NonVolatileReader reader = AddrReader; |
973 |
uint bytes = 3 /*addr*/ + DataSize; |
974 |
uint8_t addr_and_data[bytes]; |
975 |
reader.read(&addr_and_data[0], bytes); |
976 |
uint8_t sum = 0; |
977 |
for (uint i = 0; i < bytes; i++) sum += addr_and_data[i]; |
978 |
return 128 - sum % 128; |
979 |
} |
980 |
|
981 |
/** |
982 |
* Allows to tune each of the twelve semitones of an octave. |
983 |
* |
984 |
* @param ScaleTunes - detuning of all twelve semitones (in cents) |
985 |
*/ |
986 |
void Engine::AdjustScale(int8_t ScaleTunes[12]) { |
987 |
memcpy(&this->ScaleTuning[0], &ScaleTunes[0], 12); //TODO: currently not sample accurate |
988 |
} |
989 |
|
990 |
/** |
991 |
* Initialize the parameter sequence for the modulation destination given by |
992 |
* by 'dst' with the constant value given by val. |
993 |
*/ |
994 |
void Engine::ResetSynthesisParameters(Event::destination_t dst, float val) { |
995 |
int maxsamples = pAudioOutputDevice->MaxSamplesPerCycle(); |
996 |
float* m = &pSynthesisParameters[dst][0]; |
997 |
for (int i = 0; i < maxsamples; i += 4) { |
998 |
m[i] = val; |
999 |
m[i+1] = val; |
1000 |
m[i+2] = val; |
1001 |
m[i+3] = val; |
1002 |
} |
1003 |
} |
1004 |
|
1005 |
float Engine::Volume() { |
1006 |
return GlobalVolume; |
1007 |
} |
1008 |
|
1009 |
void Engine::Volume(float f) { |
1010 |
GlobalVolume = f; |
1011 |
} |
1012 |
|
1013 |
uint Engine::Channels() { |
1014 |
return 2; |
1015 |
} |
1016 |
|
1017 |
void Engine::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) { |
1018 |
AudioChannel* pChannel = pAudioOutputDevice->Channel(AudioDeviceChannel); |
1019 |
if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel)); |
1020 |
switch (EngineAudioChannel) { |
1021 |
case 0: // left output channel |
1022 |
pOutputLeft = pChannel->Buffer(); |
1023 |
AudioDeviceChannelLeft = AudioDeviceChannel; |
1024 |
break; |
1025 |
case 1: // right output channel |
1026 |
pOutputRight = pChannel->Buffer(); |
1027 |
AudioDeviceChannelRight = AudioDeviceChannel; |
1028 |
break; |
1029 |
default: |
1030 |
throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel)); |
1031 |
} |
1032 |
} |
1033 |
|
1034 |
int Engine::OutputChannel(uint EngineAudioChannel) { |
1035 |
switch (EngineAudioChannel) { |
1036 |
case 0: // left channel |
1037 |
return AudioDeviceChannelLeft; |
1038 |
case 1: // right channel |
1039 |
return AudioDeviceChannelRight; |
1040 |
default: |
1041 |
throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel)); |
1042 |
} |
1043 |
} |
1044 |
|
1045 |
uint Engine::VoiceCount() { |
1046 |
return ActiveVoiceCount; |
1047 |
} |
1048 |
|
1049 |
uint Engine::VoiceCountMax() { |
1050 |
return ActiveVoiceCountMax; |
1051 |
} |
1052 |
|
1053 |
bool Engine::DiskStreamSupported() { |
1054 |
return true; |
1055 |
} |
1056 |
|
1057 |
uint Engine::DiskStreamCount() { |
1058 |
return (pDiskThread) ? pDiskThread->ActiveStreamCount : 0; |
1059 |
} |
1060 |
|
1061 |
uint Engine::DiskStreamCountMax() { |
1062 |
return (pDiskThread) ? pDiskThread->ActiveStreamCountMax : 0; |
1063 |
} |
1064 |
|
1065 |
String Engine::DiskStreamBufferFillBytes() { |
1066 |
return pDiskThread->GetBufferFillBytes(); |
1067 |
} |
1068 |
|
1069 |
String Engine::DiskStreamBufferFillPercentage() { |
1070 |
return pDiskThread->GetBufferFillPercentage(); |
1071 |
} |
1072 |
|
1073 |
String Engine::EngineName() { |
1074 |
return "GigEngine"; |
1075 |
} |
1076 |
|
1077 |
String Engine::InstrumentFileName() { |
1078 |
return InstrumentFile; |
1079 |
} |
1080 |
|
1081 |
int Engine::InstrumentIndex() { |
1082 |
return InstrumentIdx; |
1083 |
} |
1084 |
|
1085 |
int Engine::InstrumentStatus() { |
1086 |
return InstrumentStat; |
1087 |
} |
1088 |
|
1089 |
String Engine::Description() { |
1090 |
return "Gigasampler Engine"; |
1091 |
} |
1092 |
|
1093 |
String Engine::Version() { |
1094 |
String s = "$Revision: 1.14 $"; |
1095 |
return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
1096 |
} |
1097 |
|
1098 |
}} // namespace LinuxSampler::gig |