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* * |
* * |
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* LinuxSampler - modular, streaming capable sampler * |
* LinuxSampler - modular, streaming capable sampler * |
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* * |
* * |
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* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
* Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck * |
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* Copyright (C) 2005-2008 Christian Schoenebeck * |
7 |
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* Copyright (C) 2009-2010 Christian Schoenebeck and Grigor Iliev * |
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* * |
* * |
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* This program is free software; you can redistribute it and/or modify * |
* 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 * |
* it under the terms of the GNU General Public License as published by * |
22 |
* MA 02111-1307 USA * |
* MA 02111-1307 USA * |
23 |
***************************************************************************/ |
***************************************************************************/ |
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#include <sstream> |
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#include "DiskThread.h" |
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#include "Voice.h" |
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#include "EGADSR.h" |
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#include "Engine.h" |
#include "Engine.h" |
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#include "EngineChannel.h" |
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#if defined(__APPLE__) |
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# include <stdlib.h> |
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#else |
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# include <malloc.h> |
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#endif |
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namespace LinuxSampler { namespace gig { |
namespace LinuxSampler { namespace gig { |
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Engine::Format Engine::GetEngineFormat() { return GIG; } |
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InstrumentResourceManager Engine::Instruments; |
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Engine::Engine() { |
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pRIFF = NULL; |
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pGig = NULL; |
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pInstrument = NULL; |
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pAudioOutputDevice = NULL; |
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pDiskThread = NULL; |
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pEventGenerator = NULL; |
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pSysexBuffer = new RingBuffer<uint8_t>(SYSEX_BUFFER_SIZE, 0); |
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pEventQueue = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0); |
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pEventPool = new Pool<Event>(MAX_EVENTS_PER_FRAGMENT); |
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pVoicePool = new Pool<Voice>(MAX_AUDIO_VOICES); |
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pActiveKeys = new Pool<uint>(128); |
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pVoiceStealingQueue = new RTList<Event>(pEventPool); |
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pEvents = new RTList<Event>(pEventPool); |
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pCCEvents = new RTList<Event>(pEventPool); |
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for (uint i = 0; i < Event::destination_count; i++) { |
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pSynthesisEvents[i] = new RTList<Event>(pEventPool); |
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} |
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for (uint i = 0; i < 128; i++) { |
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pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pVoicePool); |
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pMIDIKeyInfo[i].KeyPressed = false; |
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pMIDIKeyInfo[i].Active = false; |
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pMIDIKeyInfo[i].ReleaseTrigger = false; |
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pMIDIKeyInfo[i].pEvents = new RTList<Event>(pEventPool); |
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} |
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for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
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iterVoice->SetEngine(this); |
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} |
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pVoicePool->clear(); |
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pSynthesisParameters[0] = NULL; // we allocate when an audio device is connected |
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pBasicFilterParameters = NULL; |
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pMainFilterParameters = NULL; |
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InstrumentIdx = -1; |
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InstrumentStat = -1; |
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AudioDeviceChannelLeft = -1; |
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AudioDeviceChannelRight = -1; |
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ResetInternal(); |
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} |
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Engine::~Engine() { |
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if (pDiskThread) { |
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dmsg(1,("Stopping disk thread...")); |
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pDiskThread->StopThread(); |
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delete pDiskThread; |
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dmsg(1,("OK\n")); |
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} |
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if (pInstrument) Instruments.HandBack(pInstrument, this); |
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if (pGig) delete pGig; |
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if (pRIFF) delete pRIFF; |
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for (uint i = 0; i < 128; i++) { |
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if (pMIDIKeyInfo[i].pActiveVoices) delete pMIDIKeyInfo[i].pActiveVoices; |
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if (pMIDIKeyInfo[i].pEvents) delete pMIDIKeyInfo[i].pEvents; |
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} |
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for (uint i = 0; i < Event::destination_count; i++) { |
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if (pSynthesisEvents[i]) delete pSynthesisEvents[i]; |
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} |
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if (pEvents) delete pEvents; |
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if (pCCEvents) delete pCCEvents; |
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if (pEventQueue) delete pEventQueue; |
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if (pEventPool) delete pEventPool; |
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if (pVoicePool) { |
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pVoicePool->clear(); |
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delete pVoicePool; |
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} |
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if (pActiveKeys) delete pActiveKeys; |
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if (pSysexBuffer) delete pSysexBuffer; |
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if (pEventGenerator) delete pEventGenerator; |
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if (pMainFilterParameters) delete[] pMainFilterParameters; |
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if (pBasicFilterParameters) delete[] pBasicFilterParameters; |
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if (pSynthesisParameters[0]) free(pSynthesisParameters[0]); |
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if (pVoiceStealingQueue) delete pVoiceStealingQueue; |
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} |
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void Engine::Enable() { |
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dmsg(3,("gig::Engine: enabling\n")); |
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EngineDisabled.PushAndUnlock(false, 2); // set condition object 'EngineDisabled' to false (wait max. 2s) |
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dmsg(3,("gig::Engine: enabled (val=%d)\n", EngineDisabled.GetUnsafe())); |
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} |
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void Engine::Disable() { |
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dmsg(3,("gig::Engine: disabling\n")); |
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bool* pWasDisabled = EngineDisabled.PushAndUnlock(true, 2); // wait max. 2s |
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if (!pWasDisabled) dmsg(3,("gig::Engine warning: Timeout waiting to disable engine.\n")); |
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} |
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void Engine::DisableAndLock() { |
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dmsg(3,("gig::Engine: disabling\n")); |
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bool* pWasDisabled = EngineDisabled.Push(true, 2); // wait max. 2s |
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if (!pWasDisabled) dmsg(3,("gig::Engine warning: Timeout waiting to disable engine.\n")); |
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} |
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/** |
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* Reset all voices and disk thread and clear input event queue and all |
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* control and status variables. |
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*/ |
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void Engine::Reset() { |
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DisableAndLock(); |
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//if (pAudioOutputDevice->IsPlaying()) { // if already running |
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/* |
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// signal audio thread not to enter render part anymore |
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SuspensionRequested = true; |
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// sleep until wakened by audio thread |
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pthread_mutex_lock(&__render_state_mutex); |
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pthread_cond_wait(&__render_exit_condition, &__render_state_mutex); |
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pthread_mutex_unlock(&__render_state_mutex); |
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*/ |
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//} |
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//if (wasplaying) pAudioOutputDevice->Stop(); |
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ResetInternal(); |
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// signal audio thread to continue with rendering |
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//SuspensionRequested = false; |
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Enable(); |
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} |
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/** |
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* Reset all voices and disk thread and clear input event queue and all |
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* control and status variables. This method is not thread safe! |
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*/ |
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void Engine::ResetInternal() { |
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Pitch = 0; |
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SustainPedal = false; |
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ActiveVoiceCount = 0; |
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ActiveVoiceCountMax = 0; |
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GlobalVolume = 1.0; |
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CurrentKeyDimension = 0; |
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// reset voice stealing parameters |
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itLastStolenVoice = RTList<Voice>::Iterator(); |
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iuiLastStolenKey = RTList<uint>::Iterator(); |
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pVoiceStealingQueue->clear(); |
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// reset to normal chromatic scale (means equal temper) |
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memset(&ScaleTuning[0], 0x00, 12); |
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// set all MIDI controller values to zero |
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memset(ControllerTable, 0x00, 128); |
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// reset key info |
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for (uint i = 0; i < 128; i++) { |
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pMIDIKeyInfo[i].pActiveVoices->clear(); |
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pMIDIKeyInfo[i].pEvents->clear(); |
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pMIDIKeyInfo[i].KeyPressed = false; |
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pMIDIKeyInfo[i].Active = false; |
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pMIDIKeyInfo[i].ReleaseTrigger = false; |
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pMIDIKeyInfo[i].itSelf = Pool<uint>::Iterator(); |
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} |
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// reset all key groups |
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map<uint,uint*>::iterator iter = ActiveKeyGroups.begin(); |
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for (; iter != ActiveKeyGroups.end(); iter++) iter->second = NULL; |
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// reset all voices |
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for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
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iterVoice->Reset(); |
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} |
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pVoicePool->clear(); |
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// free all active keys |
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pActiveKeys->clear(); |
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// reset disk thread |
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if (pDiskThread) pDiskThread->Reset(); |
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// delete all input events |
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pEventQueue->init(); |
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} |
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/** |
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* 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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DisableAndLock(); |
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ResetInternal(); // reset engine |
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// free old instrument |
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if (pInstrument) { |
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// give old instrument back to instrument manager |
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Instruments.HandBack(pInstrument, this); |
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} |
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InstrumentFile = FileName; |
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InstrumentIdx = Instrument; |
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InstrumentStat = 0; |
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// delete all key groups |
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ActiveKeyGroups.clear(); |
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// request gig instrument from instrument manager |
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try { |
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instrument_id_t instrid; |
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instrid.FileName = 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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// rebuild ActiveKeyGroups map with key groups of current instrument |
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for (::gig::Region* pRegion = pInstrument->GetFirstRegion(); pRegion; pRegion = pInstrument->GetNextRegion()) |
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if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL; |
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InstrumentIdxName = pInstrument->pInfo->Name; |
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InstrumentStat = 100; |
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// inform audio driver for the need of two channels |
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try { |
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if (pAudioOutputDevice) pAudioOutputDevice->AcquireChannels(2); // gig Engine only stereo |
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} |
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catch (AudioOutputException e) { |
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String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message(); |
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throw LinuxSamplerException(msg); |
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} |
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Enable(); |
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} |
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/** |
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* Will be called by the InstrumentResourceManager when the instrument |
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* we are currently using in this engine is going to be updated, so we |
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* can stop playback before that happens. |
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*/ |
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void Engine::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) { |
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dmsg(3,("gig::Engine: Received instrument update message.\n")); |
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DisableAndLock(); |
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ResetInternal(); |
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this->pInstrument = NULL; |
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} |
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/** |
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* Will be called by the InstrumentResourceManager when the instrument |
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* update process was completed, so we can continue with playback. |
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*/ |
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void Engine::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) { |
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this->pInstrument = pNewResource; //TODO: there are couple of engine parameters we should update here as well if the instrument was updated (see LoadInstrument()) |
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Enable(); |
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} |
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void Engine::Connect(AudioOutputDevice* pAudioOut) { |
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pAudioOutputDevice = pAudioOut; |
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ResetInternal(); |
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// inform audio driver for the need of two channels |
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try { |
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pAudioOutputDevice->AcquireChannels(2); // gig engine only stereo |
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} |
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catch (AudioOutputException e) { |
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String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message(); |
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throw LinuxSamplerException(msg); |
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} |
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this->AudioDeviceChannelLeft = 0; |
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this->AudioDeviceChannelRight = 1; |
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this->pOutputLeft = pAudioOutputDevice->Channel(0)->Buffer(); |
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this->pOutputRight = pAudioOutputDevice->Channel(1)->Buffer(); |
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this->MaxSamplesPerCycle = pAudioOutputDevice->MaxSamplesPerCycle(); |
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this->SampleRate = pAudioOutputDevice->SampleRate(); |
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// FIXME: audio drivers with varying fragment sizes might be a problem here |
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MaxFadeOutPos = MaxSamplesPerCycle - int(double(SampleRate) * EG_MIN_RELEASE_TIME) - 1; |
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if (MaxFadeOutPos < 0) |
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throw LinuxSamplerException("EG_MIN_RELEASE_TIME in EGADSR.h to big for current audio fragment size / sampling rate!"); |
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// (re)create disk thread |
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if (this->pDiskThread) { |
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dmsg(1,("Stopping disk thread...")); |
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this->pDiskThread->StopThread(); |
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delete this->pDiskThread; |
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dmsg(1,("OK\n")); |
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} |
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this->pDiskThread = new DiskThread(((pAudioOut->MaxSamplesPerCycle() << MAX_PITCH) << 1) + 6); //FIXME: assuming stereo |
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if (!pDiskThread) { |
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dmsg(0,("gig::Engine new diskthread = NULL\n")); |
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exit(EXIT_FAILURE); |
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} |
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for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
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iterVoice->pDiskThread = this->pDiskThread; |
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dmsg(3,("d")); |
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} |
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pVoicePool->clear(); |
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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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// (re)allocate synthesis parameter matrix |
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if (pSynthesisParameters[0]) free(pSynthesisParameters[0]); |
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#if defined(__APPLE__) |
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pSynthesisParameters[0] = (float *) malloc(Event::destination_count * sizeof(float) * pAudioOut->MaxSamplesPerCycle()); |
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#else |
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pSynthesisParameters[0] = (float *) memalign(16,(Event::destination_count * sizeof(float) * pAudioOut->MaxSamplesPerCycle())); |
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#endif |
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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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// (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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dmsg(1,("Starting disk thread...")); |
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pDiskThread->StartThread(); |
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dmsg(1,("OK\n")); |
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for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
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if (!iterVoice->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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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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* 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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// 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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// 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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// 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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RTList<uint>::Iterator iuiKey = pActiveKeys->first(); |
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RTList<uint>::Iterator end = pActiveKeys->end(); |
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for(; iuiKey != end; ++iuiKey) { |
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pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key |
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} |
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} |
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// get all events from the input event queue which belong to the current fragment |
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{ |
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RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader(); |
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Event* pEvent; |
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while (true) { |
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// get next event from input event queue |
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if (!(pEvent = eventQueueReader.pop())) break; |
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// if younger event reached, ignore that and all subsequent ones for now |
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if (pEvent->FragmentPos() >= Samples) { |
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eventQueueReader--; |
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dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples)); |
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pEvent->ResetFragmentPos(); |
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break; |
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} |
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// copy event to internal event list |
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if (pEvents->poolIsEmpty()) { |
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dmsg(1,("Event pool emtpy!\n")); |
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break; |
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} |
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*pEvents->allocAppend() = *pEvent; |
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} |
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eventQueueReader.free(); // free all copied events from input queue |
|
|
} |
|
|
|
|
|
|
|
|
// process events |
|
|
{ |
|
|
RTList<Event>::Iterator itEvent = pEvents->first(); |
|
|
RTList<Event>::Iterator end = pEvents->end(); |
|
|
for (; itEvent != end; ++itEvent) { |
|
|
switch (itEvent->Type) { |
|
|
case Event::type_note_on: |
|
|
dmsg(5,("Engine: Note on received\n")); |
|
|
ProcessNoteOn(itEvent); |
|
|
break; |
|
|
case Event::type_note_off: |
|
|
dmsg(5,("Engine: Note off received\n")); |
|
|
ProcessNoteOff(itEvent); |
|
|
break; |
|
|
case Event::type_control_change: |
|
|
dmsg(5,("Engine: MIDI CC received\n")); |
|
|
ProcessControlChange(itEvent); |
|
|
break; |
|
|
case Event::type_pitchbend: |
|
|
dmsg(5,("Engine: Pitchbend received\n")); |
|
|
ProcessPitchbend(itEvent); |
|
|
break; |
|
|
case Event::type_sysex: |
|
|
dmsg(5,("Engine: Sysex received\n")); |
|
|
ProcessSysex(itEvent); |
|
|
break; |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
int active_voices = 0; |
|
|
|
|
|
// render audio from all active voices |
|
|
{ |
|
|
RTList<uint>::Iterator iuiKey = pActiveKeys->first(); |
|
|
RTList<uint>::Iterator end = pActiveKeys->end(); |
|
|
while (iuiKey != end) { // iterate through all active keys |
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey]; |
|
|
++iuiKey; |
|
|
|
|
|
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
|
|
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
|
|
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
|
|
// now render current voice |
|
|
itVoice->Render(Samples); |
|
|
if (itVoice->IsActive()) active_voices++; // still active |
|
|
else { // voice reached end, is now inactive |
|
|
FreeVoice(itVoice); // remove voice from the list of active voices |
|
|
} |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
// now render all postponed voices from voice stealing |
|
|
{ |
|
|
RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first(); |
|
|
RTList<Event>::Iterator end = pVoiceStealingQueue->end(); |
|
|
for (; itVoiceStealEvent != end; ++itVoiceStealEvent) { |
|
|
Pool<Voice>::Iterator itNewVoice = LaunchVoice(itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false); |
|
|
if (itNewVoice) { |
|
|
for (; itNewVoice; itNewVoice = itNewVoice->itChildVoice) { |
|
|
itNewVoice->Render(Samples); |
|
|
if (itNewVoice->IsActive()) active_voices++; // still active |
|
|
else { // voice reached end, is now inactive |
|
|
FreeVoice(itNewVoice); // remove voice from the list of active voices |
|
|
} |
|
|
} |
|
|
} |
|
|
else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n")); |
|
|
} |
|
|
} |
|
|
// reset voice stealing for the new fragment |
|
|
pVoiceStealingQueue->clear(); |
|
|
itLastStolenVoice = RTList<Voice>::Iterator(); |
|
|
iuiLastStolenKey = RTList<uint>::Iterator(); |
|
|
|
|
|
|
|
|
// free all keys which have no active voices left |
|
|
{ |
|
|
RTList<uint>::Iterator iuiKey = pActiveKeys->first(); |
|
|
RTList<uint>::Iterator end = pActiveKeys->end(); |
|
|
while (iuiKey != end) { // iterate through all active keys |
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey]; |
|
|
++iuiKey; |
|
|
if (pKey->pActiveVoices->isEmpty()) FreeKey(pKey); |
|
|
#if DEVMODE |
|
|
else { // FIXME: should be removed before the final release (purpose: just a sanity check for debugging) |
|
|
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
|
|
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
|
|
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
|
|
if (itVoice->itKillEvent) { |
|
|
dmsg(1,("gig::Engine: ERROR, killed voice survived !!!\n")); |
|
|
} |
|
|
} |
|
|
} |
|
|
#endif // DEVMODE |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
// write that to the disk thread class so that it can print it |
|
|
// on the console for debugging purposes |
|
|
ActiveVoiceCount = active_voices; |
|
|
if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount; |
|
|
|
|
|
|
|
|
return 0; |
|
|
} |
|
|
|
|
|
/** |
|
|
* Will be called by the MIDIIn Thread to let the audio thread trigger a new |
|
|
* voice for the given key. |
|
|
* |
|
|
* @param Key - MIDI key number of the triggered key |
|
|
* @param Velocity - MIDI velocity value of the triggered key |
|
|
*/ |
|
|
void Engine::SendNoteOn(uint8_t Key, uint8_t Velocity) { |
|
|
Event event = pEventGenerator->CreateEvent(); |
|
|
event.Type = Event::type_note_on; |
|
|
event.Param.Note.Key = Key; |
|
|
event.Param.Note.Velocity = Velocity; |
|
|
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
|
|
else dmsg(1,("Engine: Input event queue full!")); |
|
|
} |
|
|
|
|
|
/** |
|
|
* Will be called by the MIDIIn Thread to signal the audio thread to release |
|
|
* voice(s) on the given key. |
|
|
* |
|
|
* @param Key - MIDI key number of the released key |
|
|
* @param Velocity - MIDI release velocity value of the released key |
|
|
*/ |
|
|
void Engine::SendNoteOff(uint8_t Key, uint8_t Velocity) { |
|
|
Event event = pEventGenerator->CreateEvent(); |
|
|
event.Type = Event::type_note_off; |
|
|
event.Param.Note.Key = Key; |
|
|
event.Param.Note.Velocity = Velocity; |
|
|
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
|
|
else dmsg(1,("Engine: Input event queue full!")); |
|
|
} |
|
|
|
|
|
/** |
|
|
* Will be called by the MIDIIn Thread to signal the audio thread to change |
|
|
* the pitch value for all voices. |
|
|
* |
|
|
* @param Pitch - MIDI pitch value (-8192 ... +8191) |
|
|
*/ |
|
|
void Engine::SendPitchbend(int Pitch) { |
|
|
Event event = pEventGenerator->CreateEvent(); |
|
|
event.Type = Event::type_pitchbend; |
|
|
event.Param.Pitch.Pitch = Pitch; |
|
|
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
|
|
else dmsg(1,("Engine: Input event queue full!")); |
|
|
} |
|
|
|
|
|
/** |
|
|
* Will be called by the MIDIIn Thread to signal the audio thread that a |
|
|
* continuous controller value has changed. |
|
|
* |
|
|
* @param Controller - MIDI controller number of the occured control change |
|
|
* @param Value - value of the control change |
|
|
*/ |
|
|
void Engine::SendControlChange(uint8_t Controller, uint8_t Value) { |
|
|
Event event = pEventGenerator->CreateEvent(); |
|
|
event.Type = Event::type_control_change; |
|
|
event.Param.CC.Controller = Controller; |
|
|
event.Param.CC.Value = Value; |
|
|
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
|
|
else dmsg(1,("Engine: Input event queue full!")); |
|
|
} |
|
|
|
|
|
/** |
|
|
* Will be called by the MIDI input device whenever a MIDI system |
|
|
* exclusive message has arrived. |
|
|
* |
|
|
* @param pData - pointer to sysex data |
|
|
* @param Size - lenght of sysex data (in bytes) |
|
|
*/ |
|
|
void Engine::SendSysex(void* pData, uint Size) { |
|
|
Event event = pEventGenerator->CreateEvent(); |
|
|
event.Type = Event::type_sysex; |
|
|
event.Param.Sysex.Size = Size; |
|
|
if (pEventQueue->write_space() > 0) { |
|
|
if (pSysexBuffer->write_space() >= Size) { |
|
|
// copy sysex data to input buffer |
|
|
uint toWrite = Size; |
|
|
uint8_t* pPos = (uint8_t*) pData; |
|
|
while (toWrite) { |
|
|
const uint writeNow = RTMath::Min(toWrite, pSysexBuffer->write_space_to_end()); |
|
|
pSysexBuffer->write(pPos, writeNow); |
|
|
toWrite -= writeNow; |
|
|
pPos += writeNow; |
|
|
|
|
|
} |
|
|
// finally place sysex event into input event queue |
|
|
pEventQueue->push(&event); |
|
|
} |
|
|
else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,SYSEX_BUFFER_SIZE)); |
|
|
} |
|
|
else dmsg(1,("Engine: Input event queue full!")); |
|
|
} |
|
|
|
|
|
/** |
|
|
* Assigns and triggers a new voice for the respective MIDI key. |
|
|
* |
|
|
* @param itNoteOnEvent - key, velocity and time stamp of the event |
|
|
*/ |
|
|
void Engine::ProcessNoteOn(Pool<Event>::Iterator& itNoteOnEvent) { |
|
|
|
|
|
const int key = itNoteOnEvent->Param.Note.Key; |
|
|
|
|
|
// Change key dimension value if key is in keyswitching area |
|
|
if (key >= pInstrument->DimensionKeyRange.low && key <= pInstrument->DimensionKeyRange.high) |
|
|
CurrentKeyDimension = ((key - pInstrument->DimensionKeyRange.low) * 128) / |
|
|
(pInstrument->DimensionKeyRange.high - pInstrument->DimensionKeyRange.low + 1); |
|
|
|
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[key]; |
|
|
|
|
|
pKey->KeyPressed = true; // the MIDI key was now pressed down |
|
|
|
|
|
// cancel release process of voices on this key if needed |
|
|
if (pKey->Active && !SustainPedal) { |
|
|
RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend(); |
|
|
if (itCancelReleaseEvent) { |
|
|
*itCancelReleaseEvent = *itNoteOnEvent; // copy event |
|
|
itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type |
|
|
} |
|
|
else dmsg(1,("Event pool emtpy!\n")); |
|
|
} |
|
|
|
|
|
// move note on event to the key's own event list |
|
|
RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents); |
|
|
|
|
|
// allocate and trigger a new voice for the key |
|
|
LaunchVoice(itNoteOnEventOnKeyList, 0, false, true); |
|
|
} |
|
|
|
|
|
/** |
|
|
* Releases the voices on the given key if sustain pedal is not pressed. |
|
|
* If sustain is pressed, the release of the note will be postponed until |
|
|
* sustain pedal will be released or voice turned inactive by itself (e.g. |
|
|
* due to completion of sample playback). |
|
|
* |
|
|
* @param itNoteOffEvent - key, velocity and time stamp of the event |
|
|
*/ |
|
|
void Engine::ProcessNoteOff(Pool<Event>::Iterator& itNoteOffEvent) { |
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key]; |
|
|
|
|
|
pKey->KeyPressed = false; // the MIDI key was now released |
|
|
|
|
|
// release voices on this key if needed |
|
|
if (pKey->Active && !SustainPedal) { |
|
|
itNoteOffEvent->Type = Event::type_release; // transform event type |
|
|
} |
|
|
|
|
|
// move event to the key's own event list |
|
|
RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents); |
|
|
|
|
|
// spawn release triggered voice(s) if needed |
|
|
if (pKey->ReleaseTrigger) { |
|
|
LaunchVoice(itNoteOffEventOnKeyList, 0, true, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples |
|
|
pKey->ReleaseTrigger = false; |
|
|
} |
|
|
} |
|
|
|
|
|
/** |
|
|
* Moves pitchbend event from the general (input) event list to the pitch |
|
|
* event list. |
|
|
* |
|
|
* @param itPitchbendEvent - absolute pitch value and time stamp of the event |
|
|
*/ |
|
|
void Engine::ProcessPitchbend(Pool<Event>::Iterator& itPitchbendEvent) { |
|
|
this->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value |
|
|
itPitchbendEvent.moveToEndOf(pSynthesisEvents[Event::destination_vco]); |
|
|
} |
|
|
|
|
|
/** |
|
|
* Allocates and triggers a new voice. This method will usually be |
|
|
* called by the ProcessNoteOn() method and by the voices itself |
|
|
* (e.g. to spawn further voices on the same key for layered sounds). |
|
|
* |
|
|
* @param itNoteOnEvent - key, velocity and time stamp of the event |
|
|
* @param iLayer - layer index for the new voice (optional - only |
|
|
* in case of layered sounds of course) |
|
|
* @param ReleaseTriggerVoice - if new voice is a release triggered voice |
|
|
* (optional, default = false) |
|
|
* @param VoiceStealing - if voice stealing should be performed |
|
|
* when there is no free voice |
|
|
* (optional, default = true) |
|
|
* @returns pointer to new voice or NULL if there was no free voice or |
|
|
* if the voice wasn't triggered (for example when no region is |
|
|
* defined for the given key). |
|
|
*/ |
|
|
Pool<Voice>::Iterator Engine::LaunchVoice(Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing) { |
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key]; |
|
|
|
|
|
// allocate a new voice for the key |
|
|
Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend(); |
|
|
if (itNewVoice) { |
|
|
// launch the new voice |
|
|
if (itNewVoice->Trigger(itNoteOnEvent, this->Pitch, this->pInstrument, iLayer, ReleaseTriggerVoice, VoiceStealing) < 0) { |
|
|
dmsg(4,("Voice not triggered\n")); |
|
|
pKey->pActiveVoices->free(itNewVoice); |
|
|
} |
|
|
else { // on success |
|
|
uint** ppKeyGroup = NULL; |
|
|
if (itNewVoice->KeyGroup) { // if this voice / key belongs to a key group |
|
|
ppKeyGroup = &ActiveKeyGroups[itNewVoice->KeyGroup]; |
|
|
if (*ppKeyGroup) { // if there's already an active key in that key group |
|
|
midi_key_info_t* pOtherKey = &pMIDIKeyInfo[**ppKeyGroup]; |
|
|
// kill all voices on the (other) key |
|
|
RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first(); |
|
|
RTList<Voice>::Iterator end = pOtherKey->pActiveVoices->end(); |
|
|
for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) { |
|
|
if (itVoiceToBeKilled->Type != Voice::type_release_trigger) itVoiceToBeKilled->Kill(itNoteOnEvent); |
|
|
} |
|
|
} |
|
|
} |
|
|
if (!pKey->Active) { // mark as active key |
|
|
pKey->Active = true; |
|
|
pKey->itSelf = pActiveKeys->allocAppend(); |
|
|
*pKey->itSelf = itNoteOnEvent->Param.Note.Key; |
|
|
} |
|
|
if (itNewVoice->KeyGroup) { |
|
|
*ppKeyGroup = &*pKey->itSelf; // put key as the (new) active key to its key group |
|
|
} |
|
|
if (itNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s) |
|
|
return itNewVoice; // success |
|
|
} |
|
|
} |
|
|
else if (VoiceStealing) { |
|
|
// first, get total amount of required voices (dependant on amount of layers) |
|
|
::gig::Region* pRegion = pInstrument->GetRegion(itNoteOnEvent->Param.Note.Key); |
|
|
if (!pRegion) return Pool<Voice>::Iterator(); // nothing defined for this MIDI key, so no voice needed |
|
|
int voicesRequired = pRegion->Layers; |
|
|
|
|
|
// now steal the (remaining) amount of voices |
|
|
for (int i = iLayer; i < voicesRequired; i++) |
|
|
StealVoice(itNoteOnEvent); |
|
|
|
|
|
// put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died |
|
|
RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend(); |
|
|
if (itStealEvent) { |
|
|
*itStealEvent = *itNoteOnEvent; // copy event |
|
|
itStealEvent->Param.Note.Layer = iLayer; |
|
|
itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice; |
|
|
} |
|
|
else dmsg(1,("Voice stealing queue full!\n")); |
|
|
} |
|
|
|
|
|
return Pool<Voice>::Iterator(); // no free voice or error |
|
|
} |
|
|
|
|
|
/** |
|
|
* Will be called by LaunchVoice() method in case there are no free |
|
|
* voices left. This method will select and kill one old voice for |
|
|
* voice stealing and postpone the note-on event until the selected |
|
|
* voice actually died. |
|
|
* |
|
|
* @param itNoteOnEvent - key, velocity and time stamp of the event |
|
|
*/ |
|
|
void Engine::StealVoice(Pool<Event>::Iterator& itNoteOnEvent) { |
|
|
if (!pEventPool->poolIsEmpty()) { |
|
|
|
|
|
RTList<uint>::Iterator iuiOldestKey; |
|
|
RTList<Voice>::Iterator itOldestVoice; |
|
|
|
|
|
// Select one voice for voice stealing |
|
|
switch (VOICE_STEAL_ALGORITHM) { |
|
|
|
|
|
// try to pick the oldest voice on the key where the new |
|
|
// voice should be spawned, if there is no voice on that |
|
|
// key, or no voice left to kill there, then procceed with |
|
|
// 'oldestkey' algorithm |
|
|
case voice_steal_algo_keymask: { |
|
|
midi_key_info_t* pOldestKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key]; |
|
|
if (itLastStolenVoice) { |
|
|
itOldestVoice = itLastStolenVoice; |
|
|
++itOldestVoice; |
|
|
} |
|
|
else { // no voice stolen in this audio fragment cycle yet |
|
|
itOldestVoice = pOldestKey->pActiveVoices->first(); |
|
|
} |
|
|
if (itOldestVoice) { |
|
|
iuiOldestKey = pOldestKey->itSelf; |
|
|
break; // selection succeeded |
|
|
} |
|
|
} // no break - intentional ! |
|
|
|
|
|
// try to pick the oldest voice on the oldest active key |
|
|
// (caution: must stay after 'keymask' algorithm !) |
|
|
case voice_steal_algo_oldestkey: { |
|
|
if (itLastStolenVoice) { |
|
|
midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiLastStolenKey]; |
|
|
itOldestVoice = itLastStolenVoice; |
|
|
++itOldestVoice; |
|
|
if (!itOldestVoice) { |
|
|
iuiOldestKey = iuiLastStolenKey; |
|
|
++iuiOldestKey; |
|
|
if (iuiOldestKey) { |
|
|
midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiOldestKey]; |
|
|
itOldestVoice = pOldestKey->pActiveVoices->first(); |
|
|
} |
|
|
else { |
|
|
dmsg(1,("gig::Engine: Warning, too less voices, even for voice stealing! - Better recompile with higher MAX_AUDIO_VOICES.\n")); |
|
|
return; |
|
|
} |
|
|
} |
|
|
else iuiOldestKey = iuiLastStolenKey; |
|
|
} |
|
|
else { // no voice stolen in this audio fragment cycle yet |
|
|
iuiOldestKey = pActiveKeys->first(); |
|
|
midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiOldestKey]; |
|
|
itOldestVoice = pOldestKey->pActiveVoices->first(); |
|
|
} |
|
|
break; |
|
|
} |
|
|
|
|
|
// don't steal anything |
|
|
case voice_steal_algo_none: |
|
|
default: { |
|
|
dmsg(1,("No free voice (voice stealing disabled)!\n")); |
|
|
return; |
|
|
} |
|
|
} |
|
|
|
|
|
//FIXME: can be removed, just a sanity check for debugging |
|
|
if (!itOldestVoice->IsActive()) dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n")); |
|
|
|
|
|
// now kill the selected voice |
|
|
itOldestVoice->Kill(itNoteOnEvent); |
|
|
// remember which voice on which key we stole, so we can simply proceed for the next voice stealing |
|
|
this->itLastStolenVoice = itOldestVoice; |
|
|
this->iuiLastStolenKey = iuiOldestKey; |
|
|
} |
|
|
else dmsg(1,("Event pool emtpy!\n")); |
|
|
} |
|
|
|
|
|
/** |
|
|
* Removes the given voice from the MIDI key's list of active voices. |
|
|
* This method will be called when a voice went inactive, e.g. because |
|
|
* it finished to playback its sample, finished its release stage or |
|
|
* just was killed. |
|
|
* |
|
|
* @param itVoice - points to the voice to be freed |
|
|
*/ |
|
|
void Engine::FreeVoice(Pool<Voice>::Iterator& itVoice) { |
|
|
if (itVoice) { |
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[itVoice->MIDIKey]; |
|
|
|
|
|
uint keygroup = itVoice->KeyGroup; |
|
|
|
|
|
// free the voice object |
|
|
pVoicePool->free(itVoice); |
|
|
|
|
|
// if no other voices left and member of a key group, remove from key group |
|
|
if (pKey->pActiveVoices->isEmpty() && keygroup) { |
|
|
uint** ppKeyGroup = &ActiveKeyGroups[keygroup]; |
|
|
if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group |
|
|
} |
|
|
} |
|
|
else std::cerr << "Couldn't release voice! (!itVoice)\n" << std::flush; |
|
|
} |
|
|
|
|
|
/** |
|
|
* Called when there's no more voice left on a key, this call will |
|
|
* update the key info respectively. |
|
|
* |
|
|
* @param pKey - key which is now inactive |
|
|
*/ |
|
|
void Engine::FreeKey(midi_key_info_t* pKey) { |
|
|
if (pKey->pActiveVoices->isEmpty()) { |
|
|
pKey->Active = false; |
|
|
pActiveKeys->free(pKey->itSelf); // remove key from list of active keys |
|
|
pKey->itSelf = RTList<uint>::Iterator(); |
|
|
pKey->ReleaseTrigger = false; |
|
|
pKey->pEvents->clear(); |
|
|
dmsg(3,("Key has no more voices now\n")); |
|
|
} |
|
|
else dmsg(1,("gig::Engine: Oops, tried to free a key which contains voices.\n")); |
|
|
} |
|
30 |
|
|
31 |
/** |
/** |
32 |
* Reacts on supported control change commands (e.g. pitch bend wheel, |
* Reacts on supported control change commands (e.g. pitch bend wheel, |
33 |
* modulation wheel, aftertouch). |
* modulation wheel, aftertouch). |
34 |
* |
* |
35 |
|
* @param pEngineChannel - engine channel on which this event occured on |
36 |
* @param itControlChangeEvent - controller, value and time stamp of the event |
* @param itControlChangeEvent - controller, value and time stamp of the event |
37 |
*/ |
*/ |
38 |
void Engine::ProcessControlChange(Pool<Event>::Iterator& itControlChangeEvent) { |
void Engine::ProcessControlChange ( |
39 |
|
LinuxSampler::EngineChannel* pEngineChannel, |
40 |
|
Pool<Event>::Iterator& itControlChangeEvent |
41 |
|
) { |
42 |
dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value)); |
dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value)); |
43 |
|
|
44 |
switch (itControlChangeEvent->Param.CC.Controller) { |
EngineChannel* pChannel = dynamic_cast<EngineChannel*>(pEngineChannel); |
45 |
case 64: { |
// handle the "control triggered" MIDI rule: a control change |
46 |
if (itControlChangeEvent->Param.CC.Value >= 64 && !SustainPedal) { |
// event can trigger a new note on or note off event |
47 |
dmsg(4,("PEDAL DOWN\n")); |
if (pChannel->pInstrument) { |
48 |
SustainPedal = true; |
|
49 |
|
::gig::MidiRule* rule; |
50 |
// cancel release process of voices if necessary |
for (int i = 0 ; (rule = pChannel->pInstrument->GetMidiRule(i)) ; i++) { |
51 |
RTList<uint>::Iterator iuiKey = pActiveKeys->first(); |
|
52 |
if (iuiKey) { |
if (::gig::MidiRuleCtrlTrigger* ctrlTrigger = |
53 |
itControlChangeEvent->Type = Event::type_cancel_release; // transform event type |
dynamic_cast< ::gig::MidiRuleCtrlTrigger*>(rule)) { |
54 |
while (iuiKey) { |
if (itControlChangeEvent->Param.CC.Controller == |
55 |
midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey]; |
ctrlTrigger->ControllerNumber) { |
56 |
++iuiKey; |
|
57 |
if (!pKey->KeyPressed) { |
uint8_t oldCCValue = pChannel->ControllerTable[ |
58 |
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
itControlChangeEvent->Param.CC.Controller]; |
59 |
if (itNewEvent) *itNewEvent = *itControlChangeEvent; // copy event to the key's own event list |
uint8_t newCCValue = itControlChangeEvent->Param.CC.Value; |
60 |
else dmsg(1,("Event pool emtpy!\n")); |
|
61 |
} |
for (int i = 0 ; i < ctrlTrigger->Triggers ; i++) { |
62 |
} |
::gig::MidiRuleCtrlTrigger::trigger_t* pTrigger = |
63 |
} |
&ctrlTrigger->pTriggers[i]; |
64 |
} |
|
65 |
if (itControlChangeEvent->Param.CC.Value < 64 && SustainPedal) { |
// check if the controller has passed the |
66 |
dmsg(4,("PEDAL UP\n")); |
// trigger point in the right direction |
67 |
SustainPedal = false; |
if ((pTrigger->Descending && |
68 |
|
oldCCValue > pTrigger->TriggerPoint && |
69 |
// release voices if their respective key is not pressed |
newCCValue <= pTrigger->TriggerPoint) || |
70 |
RTList<uint>::Iterator iuiKey = pActiveKeys->first(); |
(!pTrigger->Descending && |
71 |
if (iuiKey) { |
oldCCValue < pTrigger->TriggerPoint && |
72 |
itControlChangeEvent->Type = Event::type_release; // transform event type |
newCCValue >= pTrigger->TriggerPoint)) { |
73 |
while (iuiKey) { |
|
74 |
midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey]; |
RTList<Event>::Iterator itNewEvent = pGlobalEvents->allocAppend(); |
75 |
++iuiKey; |
if (itNewEvent) { |
76 |
if (!pKey->KeyPressed) { |
*itNewEvent = *itControlChangeEvent; |
77 |
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
itNewEvent->Param.Note.Key = pTrigger->Key; |
78 |
if (itNewEvent) *itNewEvent = *itControlChangeEvent; // copy event to the key's own event list |
|
79 |
|
if (pTrigger->NoteOff || pTrigger->Velocity == 0) { |
80 |
|
itNewEvent->Type = Event::type_note_off; |
81 |
|
itNewEvent->Param.Note.Velocity = 100; |
82 |
|
|
83 |
|
ProcessNoteOff(pEngineChannel, itNewEvent); |
84 |
|
} else { |
85 |
|
itNewEvent->Type = Event::type_note_on; |
86 |
|
//TODO: if Velocity is 255, the triggered velocity should |
87 |
|
// depend on how fast the controller is moving |
88 |
|
itNewEvent->Param.Note.Velocity = |
89 |
|
pTrigger->Velocity == 255 ? 100 : |
90 |
|
pTrigger->Velocity; |
91 |
|
|
92 |
|
ProcessNoteOn(pEngineChannel, itNewEvent); |
93 |
|
} |
94 |
|
} |
95 |
else dmsg(1,("Event pool emtpy!\n")); |
else dmsg(1,("Event pool emtpy!\n")); |
96 |
} |
} |
97 |
} |
} |
98 |
} |
} |
99 |
} |
} |
|
break; |
|
|
} |
|
|
} |
|
|
|
|
|
// update controller value in the engine's controller table |
|
|
ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value; |
|
|
|
|
|
// move event from the unsorted event list to the control change event list |
|
|
itControlChangeEvent.moveToEndOf(pCCEvents); |
|
|
} |
|
|
|
|
|
/** |
|
|
* Reacts on MIDI system exclusive messages. |
|
|
* |
|
|
* @param itSysexEvent - sysex data size and time stamp of the sysex event |
|
|
*/ |
|
|
void Engine::ProcessSysex(Pool<Event>::Iterator& itSysexEvent) { |
|
|
RingBuffer<uint8_t>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader(); |
|
|
|
|
|
uint8_t exclusive_status, id; |
|
|
if (!reader.pop(&exclusive_status)) goto free_sysex_data; |
|
|
if (!reader.pop(&id)) goto free_sysex_data; |
|
|
if (exclusive_status != 0xF0) goto free_sysex_data; |
|
|
|
|
|
switch (id) { |
|
|
case 0x41: { // Roland |
|
|
uint8_t device_id, model_id, cmd_id; |
|
|
if (!reader.pop(&device_id)) goto free_sysex_data; |
|
|
if (!reader.pop(&model_id)) goto free_sysex_data; |
|
|
if (!reader.pop(&cmd_id)) goto free_sysex_data; |
|
|
if (model_id != 0x42 /*GS*/) goto free_sysex_data; |
|
|
if (cmd_id != 0x12 /*DT1*/) goto free_sysex_data; |
|
|
|
|
|
// command address |
|
|
uint8_t addr[3]; // 2 byte addr MSB, followed by 1 byte addr LSB) |
|
|
const RingBuffer<uint8_t>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later |
|
|
if (reader.read(&addr[0], 3) != 3) goto free_sysex_data; |
|
|
if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters |
|
|
} |
|
|
else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters |
|
|
} |
|
|
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1) |
|
|
switch (addr[3]) { |
|
|
case 0x40: { // scale tuning |
|
|
uint8_t scale_tunes[12]; // detuning of all 12 semitones of an octave |
|
|
if (reader.read(&scale_tunes[0], 12) != 12) goto free_sysex_data; |
|
|
uint8_t checksum; |
|
|
if (!reader.pop(&checksum)) goto free_sysex_data; |
|
|
if (GSCheckSum(checksum_reader, 12) != checksum) goto free_sysex_data; |
|
|
for (int i = 0; i < 12; i++) scale_tunes[i] -= 64; |
|
|
AdjustScale((int8_t*) scale_tunes); |
|
|
break; |
|
|
} |
|
|
} |
|
|
} |
|
|
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2) |
|
|
} |
|
|
else if (addr[0] == 0x41) { // Drum Setup Parameters |
|
|
} |
|
|
break; |
|
100 |
} |
} |
101 |
} |
} |
102 |
|
|
103 |
free_sysex_data: // finally free sysex data |
// update controller value in the engine channel's controller table |
104 |
pSysexBuffer->increment_read_ptr(itSysexEvent->Param.Sysex.Size); |
pChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value; |
|
} |
|
105 |
|
|
106 |
/** |
ProcessHardcodedControllers(pEngineChannel, itControlChangeEvent); |
|
* Calculates the Roland GS sysex check sum. |
|
|
* |
|
|
* @param AddrReader - reader which currently points to the first GS |
|
|
* command address byte of the GS sysex message in |
|
|
* question |
|
|
* @param DataSize - size of the GS message data (in bytes) |
|
|
*/ |
|
|
uint8_t Engine::GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize) { |
|
|
RingBuffer<uint8_t>::NonVolatileReader reader = AddrReader; |
|
|
uint bytes = 3 /*addr*/ + DataSize; |
|
|
uint8_t addr_and_data[bytes]; |
|
|
reader.read(&addr_and_data[0], bytes); |
|
|
uint8_t sum = 0; |
|
|
for (uint i = 0; i < bytes; i++) sum += addr_and_data[i]; |
|
|
return 128 - sum % 128; |
|
|
} |
|
107 |
|
|
108 |
/** |
// handle FX send controllers |
109 |
* Allows to tune each of the twelve semitones of an octave. |
ProcessFxSendControllers(pChannel, itControlChangeEvent); |
|
* |
|
|
* @param ScaleTunes - detuning of all twelve semitones (in cents) |
|
|
*/ |
|
|
void Engine::AdjustScale(int8_t ScaleTunes[12]) { |
|
|
memcpy(&this->ScaleTuning[0], &ScaleTunes[0], 12); //TODO: currently not sample accurate |
|
110 |
} |
} |
111 |
|
|
112 |
/** |
DiskThread* Engine::CreateDiskThread() { |
113 |
* Initialize the parameter sequence for the modulation destination given by |
return new DiskThread ( |
114 |
* by 'dst' with the constant value given by val. |
iMaxDiskStreams, |
115 |
*/ |
((pAudioOutputDevice->MaxSamplesPerCycle() << CONFIG_MAX_PITCH) << 1) + 6, //FIXME: assuming stereo |
116 |
void Engine::ResetSynthesisParameters(Event::destination_t dst, float val) { |
&instruments |
117 |
int maxsamples = pAudioOutputDevice->MaxSamplesPerCycle(); |
); |
118 |
float* m = &pSynthesisParameters[dst][0]; |
} |
119 |
for (int i = 0; i < maxsamples; i += 4) { |
|
120 |
m[i] = val; |
void Engine::TriggerNewVoices ( |
121 |
m[i+1] = val; |
LinuxSampler::EngineChannel* pEngineChannel, |
122 |
m[i+2] = val; |
RTList<Event>::Iterator& itNoteOnEvent, |
123 |
m[i+3] = val; |
bool HandleKeyGroupConflicts |
124 |
|
) { |
125 |
|
EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel); |
126 |
|
// first, get total amount of required voices (dependant on amount of layers) |
127 |
|
::gig::Region* pRegion = pChannel->pInstrument->GetRegion(itNoteOnEvent->Param.Note.Key); |
128 |
|
if (pRegion && !RegionSuspended(pRegion)) { |
129 |
|
int voicesRequired = pRegion->Layers; |
130 |
|
// now launch the required amount of voices |
131 |
|
for (int i = 0; i < voicesRequired; i++) |
132 |
|
LaunchVoice(pChannel, itNoteOnEvent, i, false, true, HandleKeyGroupConflicts); |
133 |
} |
} |
134 |
} |
} |
135 |
|
|
136 |
float Engine::Volume() { |
void Engine::TriggerReleaseVoices ( |
137 |
return GlobalVolume; |
LinuxSampler::EngineChannel* pEngineChannel, |
138 |
} |
RTList<Event>::Iterator& itNoteOffEvent |
139 |
|
) { |
140 |
void Engine::Volume(float f) { |
EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel); |
141 |
GlobalVolume = f; |
MidiKey* pKey = &pChannel->pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key]; |
142 |
} |
// first, get total amount of required voices (dependant on amount of layers) |
143 |
|
::gig::Region* pRegion = pChannel->pInstrument->GetRegion(itNoteOffEvent->Param.Note.Key); |
144 |
|
if (pRegion) { |
145 |
|
int voicesRequired = pRegion->Layers; |
146 |
|
|
147 |
uint Engine::Channels() { |
// MIDI note-on velocity is used instead of note-off velocity |
148 |
return 2; |
itNoteOffEvent->Param.Note.Velocity = pKey->Velocity; |
|
} |
|
149 |
|
|
150 |
void Engine::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) { |
// now launch the required amount of voices |
151 |
AudioChannel* pChannel = pAudioOutputDevice->Channel(AudioDeviceChannel); |
for (int i = 0; i < voicesRequired; i++) |
152 |
if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel)); |
LaunchVoice(pChannel, itNoteOffEvent, i, true, false, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples |
|
switch (EngineAudioChannel) { |
|
|
case 0: // left output channel |
|
|
pOutputLeft = pChannel->Buffer(); |
|
|
AudioDeviceChannelLeft = AudioDeviceChannel; |
|
|
break; |
|
|
case 1: // right output channel |
|
|
pOutputRight = pChannel->Buffer(); |
|
|
AudioDeviceChannelRight = AudioDeviceChannel; |
|
|
break; |
|
|
default: |
|
|
throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel)); |
|
153 |
} |
} |
154 |
} |
} |
155 |
|
|
156 |
int Engine::OutputChannel(uint EngineAudioChannel) { |
Pool<Voice>::Iterator Engine::LaunchVoice ( |
157 |
switch (EngineAudioChannel) { |
LinuxSampler::EngineChannel* pEngineChannel, |
158 |
case 0: // left channel |
Pool<Event>::Iterator& itNoteOnEvent, |
159 |
return AudioDeviceChannelLeft; |
int iLayer, |
160 |
case 1: // right channel |
bool ReleaseTriggerVoice, |
161 |
return AudioDeviceChannelRight; |
bool VoiceStealing, |
162 |
default: |
bool HandleKeyGroupConflicts |
163 |
throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel)); |
) { |
164 |
|
EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel); |
165 |
|
int MIDIKey = itNoteOnEvent->Param.Note.Key; |
166 |
|
EngineChannel::MidiKey* pKey = &pChannel->pMIDIKeyInfo[MIDIKey]; |
167 |
|
::gig::Region* pRegion = pChannel->pInstrument->GetRegion(MIDIKey); |
168 |
|
|
169 |
|
// if nothing defined for this key |
170 |
|
if (!pRegion) return Pool<Voice>::Iterator(); // nothing to do |
171 |
|
|
172 |
|
// only mark the first voice of a layered voice (group) to be in a |
173 |
|
// key group, so the layered voices won't kill each other |
174 |
|
int iKeyGroup = (iLayer == 0 && !ReleaseTriggerVoice) ? pRegion->KeyGroup : 0; |
175 |
|
|
176 |
|
if (HandleKeyGroupConflicts) pChannel->HandleKeyGroupConflicts(iKeyGroup, itNoteOnEvent); |
177 |
|
|
178 |
|
Voice::type_t VoiceType = Voice::type_normal; |
179 |
|
|
180 |
|
// get current dimension values to select the right dimension region |
181 |
|
//TODO: for stolen voices this dimension region selection block is processed twice, this should be changed |
182 |
|
//FIXME: controller values for selecting the dimension region here are currently not sample accurate |
183 |
|
uint DimValues[8] = { 0 }; |
184 |
|
for (int i = pRegion->Dimensions - 1; i >= 0; i--) { |
185 |
|
switch (pRegion->pDimensionDefinitions[i].dimension) { |
186 |
|
case ::gig::dimension_samplechannel: |
187 |
|
DimValues[i] = 0; //TODO: we currently ignore this dimension |
188 |
|
break; |
189 |
|
case ::gig::dimension_layer: |
190 |
|
DimValues[i] = iLayer; |
191 |
|
break; |
192 |
|
case ::gig::dimension_velocity: |
193 |
|
DimValues[i] = itNoteOnEvent->Param.Note.Velocity; |
194 |
|
break; |
195 |
|
case ::gig::dimension_channelaftertouch: |
196 |
|
DimValues[i] = pChannel->ControllerTable[128]; |
197 |
|
break; |
198 |
|
case ::gig::dimension_releasetrigger: |
199 |
|
VoiceType = (ReleaseTriggerVoice) ? Voice::type_release_trigger : (!iLayer) ? Voice::type_release_trigger_required : Voice::type_normal; |
200 |
|
DimValues[i] = (uint) ReleaseTriggerVoice; |
201 |
|
break; |
202 |
|
case ::gig::dimension_keyboard: |
203 |
|
DimValues[i] = (uint) (pChannel->CurrentKeyDimension * pRegion->pDimensionDefinitions[i].zones); |
204 |
|
break; |
205 |
|
case ::gig::dimension_roundrobin: |
206 |
|
DimValues[i] = uint(*pChannel->pMIDIKeyInfo[MIDIKey].pRoundRobinIndex % pRegion->pDimensionDefinitions[i].zones); // RoundRobinIndex is incremented for each note on in this Region |
207 |
|
break; |
208 |
|
case ::gig::dimension_roundrobinkeyboard: |
209 |
|
DimValues[i] = uint(pChannel->RoundRobinIndex % pRegion->pDimensionDefinitions[i].zones); // RoundRobinIndex is incremented for each note on |
210 |
|
break; |
211 |
|
case ::gig::dimension_random: |
212 |
|
DimValues[i] = uint(Random() * pRegion->pDimensionDefinitions[i].zones); |
213 |
|
break; |
214 |
|
case ::gig::dimension_modwheel: |
215 |
|
DimValues[i] = pChannel->ControllerTable[1]; |
216 |
|
break; |
217 |
|
case ::gig::dimension_breath: |
218 |
|
DimValues[i] = pChannel->ControllerTable[2]; |
219 |
|
break; |
220 |
|
case ::gig::dimension_foot: |
221 |
|
DimValues[i] = pChannel->ControllerTable[4]; |
222 |
|
break; |
223 |
|
case ::gig::dimension_portamentotime: |
224 |
|
DimValues[i] = pChannel->ControllerTable[5]; |
225 |
|
break; |
226 |
|
case ::gig::dimension_effect1: |
227 |
|
DimValues[i] = pChannel->ControllerTable[12]; |
228 |
|
break; |
229 |
|
case ::gig::dimension_effect2: |
230 |
|
DimValues[i] = pChannel->ControllerTable[13]; |
231 |
|
break; |
232 |
|
case ::gig::dimension_genpurpose1: |
233 |
|
DimValues[i] = pChannel->ControllerTable[16]; |
234 |
|
break; |
235 |
|
case ::gig::dimension_genpurpose2: |
236 |
|
DimValues[i] = pChannel->ControllerTable[17]; |
237 |
|
break; |
238 |
|
case ::gig::dimension_genpurpose3: |
239 |
|
DimValues[i] = pChannel->ControllerTable[18]; |
240 |
|
break; |
241 |
|
case ::gig::dimension_genpurpose4: |
242 |
|
DimValues[i] = pChannel->ControllerTable[19]; |
243 |
|
break; |
244 |
|
case ::gig::dimension_sustainpedal: |
245 |
|
DimValues[i] = pChannel->ControllerTable[64]; |
246 |
|
break; |
247 |
|
case ::gig::dimension_portamento: |
248 |
|
DimValues[i] = pChannel->ControllerTable[65]; |
249 |
|
break; |
250 |
|
case ::gig::dimension_sostenutopedal: |
251 |
|
DimValues[i] = pChannel->ControllerTable[66]; |
252 |
|
break; |
253 |
|
case ::gig::dimension_softpedal: |
254 |
|
DimValues[i] = pChannel->ControllerTable[67]; |
255 |
|
break; |
256 |
|
case ::gig::dimension_genpurpose5: |
257 |
|
DimValues[i] = pChannel->ControllerTable[80]; |
258 |
|
break; |
259 |
|
case ::gig::dimension_genpurpose6: |
260 |
|
DimValues[i] = pChannel->ControllerTable[81]; |
261 |
|
break; |
262 |
|
case ::gig::dimension_genpurpose7: |
263 |
|
DimValues[i] = pChannel->ControllerTable[82]; |
264 |
|
break; |
265 |
|
case ::gig::dimension_genpurpose8: |
266 |
|
DimValues[i] = pChannel->ControllerTable[83]; |
267 |
|
break; |
268 |
|
case ::gig::dimension_effect1depth: |
269 |
|
DimValues[i] = pChannel->ControllerTable[91]; |
270 |
|
break; |
271 |
|
case ::gig::dimension_effect2depth: |
272 |
|
DimValues[i] = pChannel->ControllerTable[92]; |
273 |
|
break; |
274 |
|
case ::gig::dimension_effect3depth: |
275 |
|
DimValues[i] = pChannel->ControllerTable[93]; |
276 |
|
break; |
277 |
|
case ::gig::dimension_effect4depth: |
278 |
|
DimValues[i] = pChannel->ControllerTable[94]; |
279 |
|
break; |
280 |
|
case ::gig::dimension_effect5depth: |
281 |
|
DimValues[i] = pChannel->ControllerTable[95]; |
282 |
|
break; |
283 |
|
case ::gig::dimension_none: |
284 |
|
std::cerr << "gig::Engine::LaunchVoice() Error: dimension=none\n" << std::flush; |
285 |
|
break; |
286 |
|
default: |
287 |
|
std::cerr << "gig::Engine::LaunchVoice() Error: Unknown dimension\n" << std::flush; |
288 |
|
} |
289 |
} |
} |
|
} |
|
290 |
|
|
291 |
uint Engine::VoiceCount() { |
// return if this is a release triggered voice and there is no |
292 |
return ActiveVoiceCount; |
// releasetrigger dimension (could happen if an instrument |
293 |
} |
// change has occured between note on and off) |
294 |
|
if (ReleaseTriggerVoice && VoiceType != Voice::type_release_trigger) return Pool<Voice>::Iterator(); |
295 |
|
|
296 |
uint Engine::VoiceCountMax() { |
::gig::DimensionRegion* pDimRgn = pRegion->GetDimensionRegionByValue(DimValues); |
|
return ActiveVoiceCountMax; |
|
|
} |
|
|
|
|
|
bool Engine::DiskStreamSupported() { |
|
|
return true; |
|
|
} |
|
297 |
|
|
298 |
uint Engine::DiskStreamCount() { |
// no need to continue if sample is silent |
299 |
return (pDiskThread) ? pDiskThread->ActiveStreamCount : 0; |
if (!pDimRgn->pSample || !pDimRgn->pSample->SamplesTotal) return Pool<Voice>::Iterator(); |
|
} |
|
300 |
|
|
301 |
uint Engine::DiskStreamCountMax() { |
// allocate a new voice for the key |
302 |
return (pDiskThread) ? pDiskThread->ActiveStreamCountMax : 0; |
Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend(); |
|
} |
|
|
|
|
|
String Engine::DiskStreamBufferFillBytes() { |
|
|
return pDiskThread->GetBufferFillBytes(); |
|
|
} |
|
|
|
|
|
String Engine::DiskStreamBufferFillPercentage() { |
|
|
return pDiskThread->GetBufferFillPercentage(); |
|
|
} |
|
|
|
|
|
String Engine::EngineName() { |
|
|
return "GigEngine"; |
|
|
} |
|
|
|
|
|
String Engine::InstrumentFileName() { |
|
|
return InstrumentFile; |
|
|
} |
|
303 |
|
|
304 |
String Engine::InstrumentName() { |
int res = InitNewVoice ( |
305 |
return InstrumentIdxName; |
pChannel, pDimRgn, itNoteOnEvent, VoiceType, iLayer, |
306 |
} |
iKeyGroup, ReleaseTriggerVoice, VoiceStealing, itNewVoice |
307 |
|
); |
308 |
|
if (!res) return itNewVoice; |
309 |
|
|
310 |
int Engine::InstrumentIndex() { |
return Pool<Voice>::Iterator(); // no free voice or error |
|
return InstrumentIdx; |
|
311 |
} |
} |
312 |
|
|
313 |
int Engine::InstrumentStatus() { |
bool Engine::DiskStreamSupported() { |
314 |
return InstrumentStat; |
return true; |
315 |
} |
} |
316 |
|
|
317 |
String Engine::Description() { |
String Engine::Description() { |
318 |
return "Gigasampler Engine"; |
return "GigaSampler Format Engine"; |
319 |
} |
} |
320 |
|
|
321 |
String Engine::Version() { |
String Engine::Version() { |
322 |
String s = "$Revision: 1.24 $"; |
String s = "$Revision: 1.108 $"; |
323 |
return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
324 |
} |
} |
325 |
|
|