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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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* Copyright (C) 2005 Christian Schoenebeck * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This program is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this program; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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#include <sstream> |
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#include "DiskThread.h" |
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#include "Voice.h" |
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#include "EGADSR.h" |
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#include "../EngineFactory.h" |
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#include "Engine.h" |
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#if defined(__APPLE__) |
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# include <stdlib.h> |
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#else |
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# include <malloc.h> |
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#endif |
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namespace LinuxSampler { namespace gig { |
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InstrumentResourceManager Engine::instruments; |
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std::map<AudioOutputDevice*,Engine*> Engine::engines; |
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/** |
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* Get a gig::Engine object for the given gig::EngineChannel and the |
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* given AudioOutputDevice. All engine channels which are connected to |
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* the same audio output device will use the same engine instance. This |
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* method will be called by a gig::EngineChannel whenever it's |
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* connecting to a audio output device. |
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* |
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* @param pChannel - engine channel which acquires an engine object |
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* @param pDevice - the audio output device \a pChannel is connected to |
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*/ |
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Engine* Engine::AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) { |
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Engine* pEngine = NULL; |
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// check if there's already an engine for the given audio output device |
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if (engines.count(pDevice)) { |
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dmsg(4,("Using existing gig::Engine.\n")); |
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pEngine = engines[pDevice]; |
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} else { // create a new engine (and disk thread) instance for the given audio output device |
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dmsg(4,("Creating new gig::Engine.\n")); |
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pEngine = (Engine*) EngineFactory::Create("gig"); |
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pEngine->Connect(pDevice); |
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engines[pDevice] = pEngine; |
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} |
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// register engine channel to the engine instance |
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pEngine->engineChannels.add(pChannel); |
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// remember index in the ArrayList |
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pChannel->iEngineIndexSelf = pEngine->engineChannels.size() - 1; |
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dmsg(4,("This gig::Engine has now %d EngineChannels.\n",pEngine->engineChannels.size())); |
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return pEngine; |
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} |
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/** |
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* Once an engine channel is disconnected from an audio output device, |
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* it wil immediately call this method to unregister itself from the |
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* engine instance and if that engine instance is not used by any other |
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* engine channel anymore, then that engine instance will be destroyed. |
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* |
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* @param pChannel - engine channel which wants to disconnect from it's |
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* engine instance |
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* @param pDevice - audio output device \a pChannel was connected to |
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*/ |
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void Engine::FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) { |
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dmsg(4,("Disconnecting EngineChannel from gig::Engine.\n")); |
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Engine* pEngine = engines[pDevice]; |
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// unregister EngineChannel from the Engine instance |
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pEngine->engineChannels.remove(pChannel); |
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// if the used Engine instance is not used anymore, then destroy it |
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if (pEngine->engineChannels.empty()) { |
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pDevice->Disconnect(pEngine); |
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engines.erase(pDevice); |
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delete pEngine; |
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dmsg(4,("Destroying gig::Engine.\n")); |
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} |
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else dmsg(4,("This gig::Engine has now %d EngineChannels.\n",pEngine->engineChannels.size())); |
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} |
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/** |
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* Constructor |
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*/ |
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Engine::Engine() { |
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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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pVoiceStealingQueue = new RTList<Event>(pEventPool); |
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pGlobalEvents = new RTList<Event>(pEventPool); |
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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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ResetInternal(); |
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} |
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/** |
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* Destructor |
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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 (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 (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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if (pSysexBuffer) delete pSysexBuffer; |
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EngineFactory::Destroy(this); |
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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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ResetInternal(); |
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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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ActiveVoiceCount = 0; |
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ActiveVoiceCountMax = 0; |
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// reset voice stealing parameters |
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pVoiceStealingQueue->clear(); |
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itLastStolenVoice = RTList<Voice>::Iterator(); |
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iuiLastStolenKey = RTList<uint>::Iterator(); |
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pLastStolenChannel = NULL; |
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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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// 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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// 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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* Connect this engine instance with the given audio output device. |
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* This method will be called when an Engine instance is created. |
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* All of the engine's data structures which are dependant to the used |
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* audio output device / driver will be (re)allocated and / or |
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* adjusted appropriately. |
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* |
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* @param pAudioOut - audio output device to connect to |
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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->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 too 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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/** |
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* Clear all engine global event lists. |
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*/ |
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void Engine::ClearEventLists() { |
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pGlobalEvents->clear(); |
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} |
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/** |
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* Copy all events from the engine's global input queue buffer to the |
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* engine's internal event list. This will be done at the beginning of |
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* each audio cycle (that is each RenderAudio() call) to distinguish |
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* all global events which have to be processed in the current audio |
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* cycle. These events are usually just SysEx messages. Every |
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* EngineChannel has it's own input event queue buffer and event list |
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* to handle common events like NoteOn, NoteOff and ControlChange |
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* events. |
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* |
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* @param Samples - number of sample points to be processed in the |
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* current audio cycle |
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*/ |
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void Engine::ImportEvents(uint Samples) { |
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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 (pGlobalEvents->poolIsEmpty()) { |
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dmsg(1,("Event pool emtpy!\n")); |
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break; |
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} |
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*pGlobalEvents->allocAppend() = *pEvent; |
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} |
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eventQueueReader.free(); // free all copied events from input queue |
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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 engine disabled |
347 |
schoenebeck |
53 |
if (EngineDisabled.Pop()) { |
348 |
|
|
dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe())); |
349 |
|
|
return 0; |
350 |
|
|
} |
351 |
|
|
|
352 |
schoenebeck |
293 |
// update time of start and end of this audio fragment (as events' time stamps relate to this) |
353 |
|
|
pEventGenerator->UpdateFragmentTime(Samples); |
354 |
|
|
|
355 |
schoenebeck |
412 |
// get all events from the engine's global input event queue which belong to the current fragment |
356 |
|
|
// (these are usually just SysEx messages) |
357 |
schoenebeck |
460 |
ImportEvents(Samples); |
358 |
schoenebeck |
412 |
|
359 |
|
|
// process engine global events (these are currently only MIDI System Exclusive messages) |
360 |
|
|
{ |
361 |
schoenebeck |
460 |
RTList<Event>::Iterator itEvent = pGlobalEvents->first(); |
362 |
|
|
RTList<Event>::Iterator end = pGlobalEvents->end(); |
363 |
schoenebeck |
412 |
for (; itEvent != end; ++itEvent) { |
364 |
|
|
switch (itEvent->Type) { |
365 |
|
|
case Event::type_sysex: |
366 |
|
|
dmsg(5,("Engine: Sysex received\n")); |
367 |
|
|
ProcessSysex(itEvent); |
368 |
|
|
break; |
369 |
|
|
} |
370 |
|
|
} |
371 |
schoenebeck |
53 |
} |
372 |
schoenebeck |
412 |
|
373 |
schoenebeck |
460 |
// We only allow a maximum of MAX_AUDIO_VOICES voices to be stolen |
374 |
|
|
// in each audio fragment. All subsequent request for spawning new |
375 |
|
|
// voices in the same audio fragment will be ignored. |
376 |
|
|
VoiceTheftsLeft = MAX_AUDIO_VOICES; |
377 |
|
|
|
378 |
schoenebeck |
412 |
// reset internal voice counter (just for statistic of active voices) |
379 |
|
|
ActiveVoiceCountTemp = 0; |
380 |
|
|
|
381 |
schoenebeck |
460 |
|
382 |
schoenebeck |
466 |
// handle events on all engine channels |
383 |
schoenebeck |
460 |
for (int i = 0; i < engineChannels.size(); i++) { |
384 |
|
|
if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded |
385 |
|
|
ProcessEvents(engineChannels[i], Samples); |
386 |
schoenebeck |
466 |
} |
387 |
|
|
|
388 |
|
|
// render all 'normal', active voices on all engine channels |
389 |
|
|
for (int i = 0; i < engineChannels.size(); i++) { |
390 |
|
|
if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded |
391 |
schoenebeck |
460 |
RenderActiveVoices(engineChannels[i], Samples); |
392 |
schoenebeck |
412 |
} |
393 |
|
|
|
394 |
schoenebeck |
460 |
// now that all ordinary voices on ALL engine channels are rendered, render new stolen voices |
395 |
|
|
RenderStolenVoices(Samples); |
396 |
|
|
|
397 |
|
|
// handle cleanup on all engine channels for the next audio fragment |
398 |
|
|
for (int i = 0; i < engineChannels.size(); i++) { |
399 |
|
|
if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded |
400 |
|
|
PostProcess(engineChannels[i]); |
401 |
|
|
} |
402 |
|
|
|
403 |
|
|
|
404 |
|
|
// empty the engine's event list for the next audio fragment |
405 |
|
|
ClearEventLists(); |
406 |
|
|
|
407 |
|
|
// reset voice stealing for the next audio fragment |
408 |
|
|
pVoiceStealingQueue->clear(); |
409 |
|
|
itLastStolenVoice = RTList<Voice>::Iterator(); |
410 |
|
|
iuiLastStolenKey = RTList<uint>::Iterator(); |
411 |
|
|
pLastStolenChannel = NULL; |
412 |
|
|
|
413 |
schoenebeck |
412 |
// just some statistics about this engine instance |
414 |
|
|
ActiveVoiceCount = ActiveVoiceCountTemp; |
415 |
|
|
if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount; |
416 |
|
|
|
417 |
|
|
return 0; |
418 |
|
|
} |
419 |
|
|
|
420 |
schoenebeck |
473 |
/** |
421 |
|
|
* Dispatch and handle all events in this audio fragment for the given |
422 |
|
|
* engine channel. |
423 |
|
|
* |
424 |
|
|
* @param pEngineChannel - engine channel on which events should be |
425 |
|
|
* processed |
426 |
|
|
* @param Samples - amount of sample points to be processed in |
427 |
|
|
* this audio fragment cycle |
428 |
|
|
*/ |
429 |
schoenebeck |
460 |
void Engine::ProcessEvents(EngineChannel* pEngineChannel, uint Samples) { |
430 |
schoenebeck |
412 |
// get all events from the engine channels's input event queue which belong to the current fragment |
431 |
|
|
// (these are the common events like NoteOn, NoteOff, ControlChange, etc.) |
432 |
schoenebeck |
460 |
pEngineChannel->ImportEvents(Samples); |
433 |
schoenebeck |
53 |
|
434 |
|
|
// process events |
435 |
schoenebeck |
271 |
{ |
436 |
schoenebeck |
460 |
RTList<Event>::Iterator itEvent = pEngineChannel->pEvents->first(); |
437 |
|
|
RTList<Event>::Iterator end = pEngineChannel->pEvents->end(); |
438 |
schoenebeck |
271 |
for (; itEvent != end; ++itEvent) { |
439 |
|
|
switch (itEvent->Type) { |
440 |
|
|
case Event::type_note_on: |
441 |
|
|
dmsg(5,("Engine: Note on received\n")); |
442 |
schoenebeck |
412 |
ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent); |
443 |
schoenebeck |
271 |
break; |
444 |
|
|
case Event::type_note_off: |
445 |
|
|
dmsg(5,("Engine: Note off received\n")); |
446 |
schoenebeck |
412 |
ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent); |
447 |
schoenebeck |
271 |
break; |
448 |
|
|
case Event::type_control_change: |
449 |
|
|
dmsg(5,("Engine: MIDI CC received\n")); |
450 |
schoenebeck |
412 |
ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent); |
451 |
schoenebeck |
271 |
break; |
452 |
|
|
case Event::type_pitchbend: |
453 |
|
|
dmsg(5,("Engine: Pitchbend received\n")); |
454 |
schoenebeck |
412 |
ProcessPitchbend((EngineChannel*)itEvent->pEngineChannel, itEvent); |
455 |
schoenebeck |
271 |
break; |
456 |
|
|
} |
457 |
schoenebeck |
53 |
} |
458 |
|
|
} |
459 |
schoenebeck |
460 |
} |
460 |
schoenebeck |
53 |
|
461 |
schoenebeck |
473 |
/** |
462 |
|
|
* Render all 'normal' voices (that is voices which were not stolen in |
463 |
|
|
* this fragment) on the given engine channel. |
464 |
|
|
* |
465 |
|
|
* @param pEngineChannel - engine channel on which audio should be |
466 |
|
|
* rendered |
467 |
|
|
* @param Samples - amount of sample points to be rendered in |
468 |
|
|
* this audio fragment cycle |
469 |
|
|
*/ |
470 |
schoenebeck |
460 |
void Engine::RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples) { |
471 |
|
|
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
472 |
|
|
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
473 |
|
|
while (iuiKey != end) { // iterate through all active keys |
474 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
475 |
|
|
++iuiKey; |
476 |
schoenebeck |
53 |
|
477 |
schoenebeck |
460 |
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
478 |
|
|
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
479 |
|
|
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
480 |
|
|
// now render current voice |
481 |
|
|
itVoice->Render(Samples); |
482 |
|
|
if (itVoice->IsActive()) ActiveVoiceCountTemp++; // still active |
483 |
|
|
else { // voice reached end, is now inactive |
484 |
|
|
FreeVoice(pEngineChannel, itVoice); // remove voice from the list of active voices |
485 |
schoenebeck |
53 |
} |
486 |
|
|
} |
487 |
|
|
} |
488 |
schoenebeck |
460 |
} |
489 |
schoenebeck |
53 |
|
490 |
schoenebeck |
473 |
/** |
491 |
|
|
* Render all stolen voices (only voices which were stolen in this |
492 |
|
|
* fragment) on the given engine channel. Stolen voices are rendered |
493 |
|
|
* after all normal voices have been rendered; this is needed to render |
494 |
|
|
* audio of those voices which were selected for voice stealing until |
495 |
|
|
* the point were the stealing (that is the take over of the voice) |
496 |
|
|
* actually happened. |
497 |
|
|
* |
498 |
|
|
* @param pEngineChannel - engine channel on which audio should be |
499 |
|
|
* rendered |
500 |
|
|
* @param Samples - amount of sample points to be rendered in |
501 |
|
|
* this audio fragment cycle |
502 |
|
|
*/ |
503 |
schoenebeck |
460 |
void Engine::RenderStolenVoices(uint Samples) { |
504 |
|
|
RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first(); |
505 |
|
|
RTList<Event>::Iterator end = pVoiceStealingQueue->end(); |
506 |
|
|
for (; itVoiceStealEvent != end; ++itVoiceStealEvent) { |
507 |
|
|
EngineChannel* pEngineChannel = (EngineChannel*) itVoiceStealEvent->pEngineChannel; |
508 |
|
|
Pool<Voice>::Iterator itNewVoice = |
509 |
|
|
LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false); |
510 |
|
|
if (itNewVoice) { |
511 |
|
|
itNewVoice->Render(Samples); |
512 |
|
|
if (itNewVoice->IsActive()) ActiveVoiceCountTemp++; // still active |
513 |
|
|
else { // voice reached end, is now inactive |
514 |
|
|
FreeVoice(pEngineChannel, itNewVoice); // remove voice from the list of active voices |
515 |
schoenebeck |
250 |
} |
516 |
|
|
} |
517 |
schoenebeck |
460 |
else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n")); |
518 |
schoenebeck |
473 |
|
519 |
|
|
// we need to clear the key's event list explicitly here in case key was never active |
520 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoiceStealEvent->Param.Note.Key]; |
521 |
|
|
pKey->VoiceTheftsQueued--; |
522 |
|
|
if (!pKey->Active && !pKey->VoiceTheftsQueued) pKey->pEvents->clear(); |
523 |
schoenebeck |
250 |
} |
524 |
schoenebeck |
460 |
} |
525 |
schoenebeck |
250 |
|
526 |
schoenebeck |
473 |
/** |
527 |
|
|
* Free all keys which have turned inactive in this audio fragment, from |
528 |
|
|
* the list of active keys and clear all event lists on that engine |
529 |
|
|
* channel. |
530 |
|
|
* |
531 |
|
|
* @param pEngineChannel - engine channel to cleanup |
532 |
|
|
*/ |
533 |
schoenebeck |
460 |
void Engine::PostProcess(EngineChannel* pEngineChannel) { |
534 |
schoenebeck |
287 |
// free all keys which have no active voices left |
535 |
|
|
{ |
536 |
schoenebeck |
411 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
537 |
|
|
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
538 |
schoenebeck |
287 |
while (iuiKey != end) { // iterate through all active keys |
539 |
schoenebeck |
411 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
540 |
schoenebeck |
287 |
++iuiKey; |
541 |
schoenebeck |
411 |
if (pKey->pActiveVoices->isEmpty()) FreeKey(pEngineChannel, pKey); |
542 |
schoenebeck |
287 |
#if DEVMODE |
543 |
|
|
else { // FIXME: should be removed before the final release (purpose: just a sanity check for debugging) |
544 |
|
|
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
545 |
|
|
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
546 |
|
|
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
547 |
|
|
if (itVoice->itKillEvent) { |
548 |
|
|
dmsg(1,("gig::Engine: ERROR, killed voice survived !!!\n")); |
549 |
|
|
} |
550 |
|
|
} |
551 |
|
|
} |
552 |
|
|
#endif // DEVMODE |
553 |
|
|
} |
554 |
|
|
} |
555 |
schoenebeck |
460 |
|
556 |
|
|
// empty the engine channel's own event lists |
557 |
|
|
pEngineChannel->ClearEventLists(); |
558 |
schoenebeck |
412 |
} |
559 |
schoenebeck |
287 |
|
560 |
schoenebeck |
53 |
/** |
561 |
schoenebeck |
244 |
* Will be called by the MIDI input device whenever a MIDI system |
562 |
|
|
* exclusive message has arrived. |
563 |
|
|
* |
564 |
|
|
* @param pData - pointer to sysex data |
565 |
|
|
* @param Size - lenght of sysex data (in bytes) |
566 |
|
|
*/ |
567 |
|
|
void Engine::SendSysex(void* pData, uint Size) { |
568 |
schoenebeck |
246 |
Event event = pEventGenerator->CreateEvent(); |
569 |
|
|
event.Type = Event::type_sysex; |
570 |
|
|
event.Param.Sysex.Size = Size; |
571 |
schoenebeck |
412 |
event.pEngineChannel = NULL; // as Engine global event |
572 |
schoenebeck |
244 |
if (pEventQueue->write_space() > 0) { |
573 |
|
|
if (pSysexBuffer->write_space() >= Size) { |
574 |
|
|
// copy sysex data to input buffer |
575 |
|
|
uint toWrite = Size; |
576 |
|
|
uint8_t* pPos = (uint8_t*) pData; |
577 |
|
|
while (toWrite) { |
578 |
|
|
const uint writeNow = RTMath::Min(toWrite, pSysexBuffer->write_space_to_end()); |
579 |
|
|
pSysexBuffer->write(pPos, writeNow); |
580 |
|
|
toWrite -= writeNow; |
581 |
|
|
pPos += writeNow; |
582 |
|
|
|
583 |
|
|
} |
584 |
|
|
// finally place sysex event into input event queue |
585 |
|
|
pEventQueue->push(&event); |
586 |
|
|
} |
587 |
|
|
else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,SYSEX_BUFFER_SIZE)); |
588 |
|
|
} |
589 |
|
|
else dmsg(1,("Engine: Input event queue full!")); |
590 |
|
|
} |
591 |
|
|
|
592 |
|
|
/** |
593 |
schoenebeck |
53 |
* Assigns and triggers a new voice for the respective MIDI key. |
594 |
|
|
* |
595 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
596 |
schoenebeck |
271 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
597 |
schoenebeck |
53 |
*/ |
598 |
schoenebeck |
411 |
void Engine::ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) { |
599 |
persson |
438 |
|
600 |
schoenebeck |
354 |
const int key = itNoteOnEvent->Param.Note.Key; |
601 |
|
|
|
602 |
|
|
// Change key dimension value if key is in keyswitching area |
603 |
schoenebeck |
411 |
{ |
604 |
|
|
const ::gig::Instrument* pInstrument = pEngineChannel->pInstrument; |
605 |
|
|
if (key >= pInstrument->DimensionKeyRange.low && key <= pInstrument->DimensionKeyRange.high) |
606 |
|
|
pEngineChannel->CurrentKeyDimension = ((key - pInstrument->DimensionKeyRange.low) * 128) / |
607 |
|
|
(pInstrument->DimensionKeyRange.high - pInstrument->DimensionKeyRange.low + 1); |
608 |
|
|
} |
609 |
schoenebeck |
354 |
|
610 |
schoenebeck |
411 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[key]; |
611 |
schoenebeck |
354 |
|
612 |
schoenebeck |
53 |
pKey->KeyPressed = true; // the MIDI key was now pressed down |
613 |
|
|
|
614 |
|
|
// cancel release process of voices on this key if needed |
615 |
schoenebeck |
411 |
if (pKey->Active && !pEngineChannel->SustainPedal) { |
616 |
schoenebeck |
271 |
RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend(); |
617 |
|
|
if (itCancelReleaseEvent) { |
618 |
|
|
*itCancelReleaseEvent = *itNoteOnEvent; // copy event |
619 |
|
|
itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type |
620 |
schoenebeck |
239 |
} |
621 |
|
|
else dmsg(1,("Event pool emtpy!\n")); |
622 |
schoenebeck |
53 |
} |
623 |
|
|
|
624 |
schoenebeck |
271 |
// move note on event to the key's own event list |
625 |
|
|
RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents); |
626 |
|
|
|
627 |
schoenebeck |
460 |
// allocate and trigger new voice(s) for the key |
628 |
|
|
{ |
629 |
|
|
// first, get total amount of required voices (dependant on amount of layers) |
630 |
|
|
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOnEventOnKeyList->Param.Note.Key); |
631 |
|
|
if (pRegion) { |
632 |
|
|
int voicesRequired = pRegion->Layers; |
633 |
|
|
// now launch the required amount of voices |
634 |
|
|
for (int i = 0; i < voicesRequired; i++) |
635 |
|
|
LaunchVoice(pEngineChannel, itNoteOnEventOnKeyList, i, false, true); |
636 |
|
|
} |
637 |
|
|
} |
638 |
persson |
438 |
|
639 |
schoenebeck |
473 |
// if neither a voice was spawned or postponed then remove note on event from key again |
640 |
|
|
if (!pKey->Active && !pKey->VoiceTheftsQueued) |
641 |
|
|
pKey->pEvents->free(itNoteOnEventOnKeyList); |
642 |
|
|
|
643 |
persson |
438 |
pKey->RoundRobinIndex++; |
644 |
schoenebeck |
53 |
} |
645 |
|
|
|
646 |
|
|
/** |
647 |
|
|
* Releases the voices on the given key if sustain pedal is not pressed. |
648 |
|
|
* If sustain is pressed, the release of the note will be postponed until |
649 |
|
|
* sustain pedal will be released or voice turned inactive by itself (e.g. |
650 |
|
|
* due to completion of sample playback). |
651 |
|
|
* |
652 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
653 |
schoenebeck |
271 |
* @param itNoteOffEvent - key, velocity and time stamp of the event |
654 |
schoenebeck |
53 |
*/ |
655 |
schoenebeck |
411 |
void Engine::ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) { |
656 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key]; |
657 |
schoenebeck |
53 |
|
658 |
|
|
pKey->KeyPressed = false; // the MIDI key was now released |
659 |
|
|
|
660 |
|
|
// release voices on this key if needed |
661 |
schoenebeck |
411 |
if (pKey->Active && !pEngineChannel->SustainPedal) { |
662 |
schoenebeck |
271 |
itNoteOffEvent->Type = Event::type_release; // transform event type |
663 |
schoenebeck |
242 |
|
664 |
persson |
497 |
// move event to the key's own event list |
665 |
|
|
RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents); |
666 |
schoenebeck |
271 |
|
667 |
persson |
497 |
// spawn release triggered voice(s) if needed |
668 |
|
|
if (pKey->ReleaseTrigger) { |
669 |
|
|
// first, get total amount of required voices (dependant on amount of layers) |
670 |
|
|
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOffEventOnKeyList->Param.Note.Key); |
671 |
|
|
if (pRegion) { |
672 |
|
|
int voicesRequired = pRegion->Layers; |
673 |
|
|
// now launch the required amount of voices |
674 |
|
|
for (int i = 0; i < voicesRequired; i++) |
675 |
|
|
LaunchVoice(pEngineChannel, itNoteOffEventOnKeyList, i, true, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples |
676 |
|
|
} |
677 |
|
|
pKey->ReleaseTrigger = false; |
678 |
schoenebeck |
460 |
} |
679 |
persson |
497 |
|
680 |
|
|
// if neither a voice was spawned or postponed then remove note off event from key again |
681 |
|
|
if (!pKey->Active && !pKey->VoiceTheftsQueued) |
682 |
|
|
pKey->pEvents->free(itNoteOffEventOnKeyList); |
683 |
schoenebeck |
242 |
} |
684 |
schoenebeck |
53 |
} |
685 |
|
|
|
686 |
|
|
/** |
687 |
|
|
* Moves pitchbend event from the general (input) event list to the pitch |
688 |
|
|
* event list. |
689 |
|
|
* |
690 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
691 |
schoenebeck |
271 |
* @param itPitchbendEvent - absolute pitch value and time stamp of the event |
692 |
schoenebeck |
53 |
*/ |
693 |
schoenebeck |
411 |
void Engine::ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent) { |
694 |
|
|
pEngineChannel->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value |
695 |
schoenebeck |
460 |
itPitchbendEvent.moveToEndOf(pEngineChannel->pSynthesisEvents[Event::destination_vco]); |
696 |
schoenebeck |
53 |
} |
697 |
|
|
|
698 |
|
|
/** |
699 |
schoenebeck |
233 |
* Allocates and triggers a new voice. This method will usually be |
700 |
|
|
* called by the ProcessNoteOn() method and by the voices itself |
701 |
|
|
* (e.g. to spawn further voices on the same key for layered sounds). |
702 |
|
|
* |
703 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
704 |
schoenebeck |
271 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
705 |
schoenebeck |
242 |
* @param iLayer - layer index for the new voice (optional - only |
706 |
|
|
* in case of layered sounds of course) |
707 |
|
|
* @param ReleaseTriggerVoice - if new voice is a release triggered voice |
708 |
|
|
* (optional, default = false) |
709 |
schoenebeck |
250 |
* @param VoiceStealing - if voice stealing should be performed |
710 |
|
|
* when there is no free voice |
711 |
|
|
* (optional, default = true) |
712 |
|
|
* @returns pointer to new voice or NULL if there was no free voice or |
713 |
schoenebeck |
354 |
* if the voice wasn't triggered (for example when no region is |
714 |
|
|
* defined for the given key). |
715 |
schoenebeck |
233 |
*/ |
716 |
schoenebeck |
411 |
Pool<Voice>::Iterator Engine::LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing) { |
717 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key]; |
718 |
schoenebeck |
233 |
|
719 |
|
|
// allocate a new voice for the key |
720 |
schoenebeck |
271 |
Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend(); |
721 |
|
|
if (itNewVoice) { |
722 |
schoenebeck |
233 |
// launch the new voice |
723 |
schoenebeck |
411 |
if (itNewVoice->Trigger(pEngineChannel, itNoteOnEvent, pEngineChannel->Pitch, pEngineChannel->pInstrument, iLayer, ReleaseTriggerVoice, VoiceStealing) < 0) { |
724 |
schoenebeck |
354 |
dmsg(4,("Voice not triggered\n")); |
725 |
schoenebeck |
271 |
pKey->pActiveVoices->free(itNewVoice); |
726 |
schoenebeck |
233 |
} |
727 |
schoenebeck |
239 |
else { // on success |
728 |
|
|
uint** ppKeyGroup = NULL; |
729 |
schoenebeck |
271 |
if (itNewVoice->KeyGroup) { // if this voice / key belongs to a key group |
730 |
schoenebeck |
411 |
ppKeyGroup = &pEngineChannel->ActiveKeyGroups[itNewVoice->KeyGroup]; |
731 |
schoenebeck |
239 |
if (*ppKeyGroup) { // if there's already an active key in that key group |
732 |
schoenebeck |
411 |
midi_key_info_t* pOtherKey = &pEngineChannel->pMIDIKeyInfo[**ppKeyGroup]; |
733 |
schoenebeck |
239 |
// kill all voices on the (other) key |
734 |
schoenebeck |
271 |
RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first(); |
735 |
|
|
RTList<Voice>::Iterator end = pOtherKey->pActiveVoices->end(); |
736 |
|
|
for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) { |
737 |
|
|
if (itVoiceToBeKilled->Type != Voice::type_release_trigger) itVoiceToBeKilled->Kill(itNoteOnEvent); |
738 |
schoenebeck |
242 |
} |
739 |
schoenebeck |
239 |
} |
740 |
|
|
} |
741 |
|
|
if (!pKey->Active) { // mark as active key |
742 |
|
|
pKey->Active = true; |
743 |
schoenebeck |
411 |
pKey->itSelf = pEngineChannel->pActiveKeys->allocAppend(); |
744 |
schoenebeck |
271 |
*pKey->itSelf = itNoteOnEvent->Param.Note.Key; |
745 |
schoenebeck |
239 |
} |
746 |
schoenebeck |
271 |
if (itNewVoice->KeyGroup) { |
747 |
|
|
*ppKeyGroup = &*pKey->itSelf; // put key as the (new) active key to its key group |
748 |
schoenebeck |
239 |
} |
749 |
schoenebeck |
271 |
if (itNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s) |
750 |
|
|
return itNewVoice; // success |
751 |
schoenebeck |
233 |
} |
752 |
|
|
} |
753 |
schoenebeck |
285 |
else if (VoiceStealing) { |
754 |
schoenebeck |
460 |
// try to steal one voice |
755 |
schoenebeck |
473 |
int result = StealVoice(pEngineChannel, itNoteOnEvent); |
756 |
|
|
if (!result) { // voice stolen successfully |
757 |
|
|
// put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died |
758 |
|
|
RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend(); |
759 |
|
|
if (itStealEvent) { |
760 |
|
|
*itStealEvent = *itNoteOnEvent; // copy event |
761 |
|
|
itStealEvent->Param.Note.Layer = iLayer; |
762 |
|
|
itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice; |
763 |
|
|
pKey->VoiceTheftsQueued++; |
764 |
|
|
} |
765 |
|
|
else dmsg(1,("Voice stealing queue full!\n")); |
766 |
schoenebeck |
285 |
} |
767 |
|
|
} |
768 |
|
|
|
769 |
schoenebeck |
271 |
return Pool<Voice>::Iterator(); // no free voice or error |
770 |
schoenebeck |
233 |
} |
771 |
|
|
|
772 |
|
|
/** |
773 |
schoenebeck |
250 |
* Will be called by LaunchVoice() method in case there are no free |
774 |
|
|
* voices left. This method will select and kill one old voice for |
775 |
|
|
* voice stealing and postpone the note-on event until the selected |
776 |
|
|
* voice actually died. |
777 |
|
|
* |
778 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
779 |
schoenebeck |
285 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
780 |
schoenebeck |
473 |
* @returns 0 on success, a value < 0 if no active voice could be picked for voice stealing |
781 |
schoenebeck |
250 |
*/ |
782 |
schoenebeck |
473 |
int Engine::StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) { |
783 |
schoenebeck |
460 |
if (!VoiceTheftsLeft) { |
784 |
|
|
dmsg(1,("Max. voice thefts per audio fragment reached (you may raise MAX_AUDIO_VOICES).\n")); |
785 |
schoenebeck |
473 |
return -1; |
786 |
schoenebeck |
460 |
} |
787 |
schoenebeck |
271 |
if (!pEventPool->poolIsEmpty()) { |
788 |
schoenebeck |
250 |
|
789 |
schoenebeck |
460 |
RTList<Voice>::Iterator itSelectedVoice; |
790 |
schoenebeck |
250 |
|
791 |
|
|
// Select one voice for voice stealing |
792 |
|
|
switch (VOICE_STEAL_ALGORITHM) { |
793 |
|
|
|
794 |
|
|
// try to pick the oldest voice on the key where the new |
795 |
|
|
// voice should be spawned, if there is no voice on that |
796 |
|
|
// key, or no voice left to kill there, then procceed with |
797 |
|
|
// 'oldestkey' algorithm |
798 |
schoenebeck |
460 |
case voice_steal_algo_oldestvoiceonkey: { |
799 |
|
|
#if 0 // FIXME: broken |
800 |
|
|
midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key]; |
801 |
|
|
if (this->itLastStolenVoice) { |
802 |
|
|
itSelectedVoice = this->itLastStolenVoice; |
803 |
|
|
++itSelectedVoice; |
804 |
schoenebeck |
250 |
} |
805 |
|
|
else { // no voice stolen in this audio fragment cycle yet |
806 |
schoenebeck |
460 |
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
807 |
schoenebeck |
250 |
} |
808 |
schoenebeck |
460 |
if (itSelectedVoice) { |
809 |
|
|
iuiSelectedKey = pSelectedKey->itSelf; |
810 |
schoenebeck |
250 |
break; // selection succeeded |
811 |
|
|
} |
812 |
schoenebeck |
460 |
#endif |
813 |
schoenebeck |
250 |
} // no break - intentional ! |
814 |
|
|
|
815 |
|
|
// try to pick the oldest voice on the oldest active key |
816 |
schoenebeck |
460 |
// (caution: must stay after 'oldestvoiceonkey' algorithm !) |
817 |
schoenebeck |
250 |
case voice_steal_algo_oldestkey: { |
818 |
schoenebeck |
460 |
if (this->itLastStolenVoice) { |
819 |
|
|
itSelectedVoice = this->itLastStolenVoice; |
820 |
|
|
++itSelectedVoice; |
821 |
|
|
if (itSelectedVoice) break; // selection succeeded |
822 |
|
|
RTList<uint>::Iterator iuiSelectedKey = this->iuiLastStolenKey; |
823 |
|
|
++iuiSelectedKey; |
824 |
|
|
if (iuiSelectedKey) { |
825 |
|
|
this->iuiLastStolenKey = iuiSelectedKey; |
826 |
|
|
midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey]; |
827 |
|
|
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
828 |
|
|
break; // selection succeeded |
829 |
schoenebeck |
250 |
} |
830 |
|
|
} |
831 |
|
|
break; |
832 |
|
|
} |
833 |
|
|
|
834 |
|
|
// don't steal anything |
835 |
|
|
case voice_steal_algo_none: |
836 |
|
|
default: { |
837 |
|
|
dmsg(1,("No free voice (voice stealing disabled)!\n")); |
838 |
schoenebeck |
473 |
return -1; |
839 |
schoenebeck |
250 |
} |
840 |
|
|
} |
841 |
|
|
|
842 |
schoenebeck |
460 |
// steal oldest voice on the oldest key from this or any other engine channel |
843 |
|
|
if (!itSelectedVoice) { |
844 |
|
|
EngineChannel* pSelectedChannel = (pLastStolenChannel) ? pLastStolenChannel : pEngineChannel; |
845 |
|
|
int iChannelIndex = pSelectedChannel->iEngineIndexSelf; |
846 |
|
|
while (true) { |
847 |
|
|
RTList<uint>::Iterator iuiSelectedKey = pSelectedChannel->pActiveKeys->first(); |
848 |
|
|
if (iuiSelectedKey) { |
849 |
|
|
midi_key_info_t* pSelectedKey = &pSelectedChannel->pMIDIKeyInfo[*iuiSelectedKey]; |
850 |
|
|
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
851 |
|
|
iuiLastStolenKey = iuiSelectedKey; |
852 |
|
|
pLastStolenChannel = pSelectedChannel; |
853 |
|
|
break; // selection succeeded |
854 |
|
|
} |
855 |
|
|
iChannelIndex = (iChannelIndex + 1) % engineChannels.size(); |
856 |
|
|
pSelectedChannel = engineChannels[iChannelIndex]; |
857 |
|
|
} |
858 |
|
|
} |
859 |
|
|
|
860 |
schoenebeck |
287 |
//FIXME: can be removed, just a sanity check for debugging |
861 |
schoenebeck |
473 |
if (!itSelectedVoice->IsActive()) { |
862 |
|
|
dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n")); |
863 |
|
|
return -1; |
864 |
|
|
} |
865 |
schoenebeck |
287 |
|
866 |
schoenebeck |
250 |
// now kill the selected voice |
867 |
schoenebeck |
460 |
itSelectedVoice->Kill(itNoteOnEvent); |
868 |
|
|
|
869 |
|
|
// remember which voice we stole, so we can simply proceed for the next voice stealing |
870 |
|
|
itLastStolenVoice = itSelectedVoice; |
871 |
|
|
|
872 |
|
|
--VoiceTheftsLeft; |
873 |
schoenebeck |
473 |
|
874 |
|
|
return 0; // success |
875 |
schoenebeck |
250 |
} |
876 |
schoenebeck |
473 |
else { |
877 |
|
|
dmsg(1,("Event pool emtpy!\n")); |
878 |
|
|
return -1; |
879 |
|
|
} |
880 |
schoenebeck |
250 |
} |
881 |
|
|
|
882 |
|
|
/** |
883 |
schoenebeck |
285 |
* Removes the given voice from the MIDI key's list of active voices. |
884 |
|
|
* This method will be called when a voice went inactive, e.g. because |
885 |
|
|
* it finished to playback its sample, finished its release stage or |
886 |
|
|
* just was killed. |
887 |
schoenebeck |
53 |
* |
888 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
889 |
schoenebeck |
285 |
* @param itVoice - points to the voice to be freed |
890 |
schoenebeck |
53 |
*/ |
891 |
schoenebeck |
411 |
void Engine::FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice) { |
892 |
schoenebeck |
271 |
if (itVoice) { |
893 |
schoenebeck |
411 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoice->MIDIKey]; |
894 |
schoenebeck |
53 |
|
895 |
schoenebeck |
271 |
uint keygroup = itVoice->KeyGroup; |
896 |
|
|
|
897 |
schoenebeck |
53 |
// free the voice object |
898 |
schoenebeck |
271 |
pVoicePool->free(itVoice); |
899 |
schoenebeck |
53 |
|
900 |
schoenebeck |
287 |
// if no other voices left and member of a key group, remove from key group |
901 |
|
|
if (pKey->pActiveVoices->isEmpty() && keygroup) { |
902 |
schoenebeck |
411 |
uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[keygroup]; |
903 |
schoenebeck |
287 |
if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group |
904 |
schoenebeck |
53 |
} |
905 |
|
|
} |
906 |
schoenebeck |
285 |
else std::cerr << "Couldn't release voice! (!itVoice)\n" << std::flush; |
907 |
schoenebeck |
53 |
} |
908 |
|
|
|
909 |
|
|
/** |
910 |
schoenebeck |
287 |
* Called when there's no more voice left on a key, this call will |
911 |
|
|
* update the key info respectively. |
912 |
|
|
* |
913 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
914 |
schoenebeck |
287 |
* @param pKey - key which is now inactive |
915 |
|
|
*/ |
916 |
schoenebeck |
411 |
void Engine::FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey) { |
917 |
schoenebeck |
287 |
if (pKey->pActiveVoices->isEmpty()) { |
918 |
|
|
pKey->Active = false; |
919 |
schoenebeck |
411 |
pEngineChannel->pActiveKeys->free(pKey->itSelf); // remove key from list of active keys |
920 |
schoenebeck |
287 |
pKey->itSelf = RTList<uint>::Iterator(); |
921 |
|
|
pKey->ReleaseTrigger = false; |
922 |
|
|
pKey->pEvents->clear(); |
923 |
|
|
dmsg(3,("Key has no more voices now\n")); |
924 |
|
|
} |
925 |
|
|
else dmsg(1,("gig::Engine: Oops, tried to free a key which contains voices.\n")); |
926 |
|
|
} |
927 |
|
|
|
928 |
|
|
/** |
929 |
schoenebeck |
53 |
* Reacts on supported control change commands (e.g. pitch bend wheel, |
930 |
|
|
* modulation wheel, aftertouch). |
931 |
|
|
* |
932 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
933 |
schoenebeck |
271 |
* @param itControlChangeEvent - controller, value and time stamp of the event |
934 |
schoenebeck |
53 |
*/ |
935 |
schoenebeck |
411 |
void Engine::ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent) { |
936 |
schoenebeck |
271 |
dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value)); |
937 |
schoenebeck |
53 |
|
938 |
schoenebeck |
473 |
// update controller value in the engine channel's controller table |
939 |
|
|
pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value; |
940 |
|
|
|
941 |
|
|
// move event from the unsorted event list to the control change event list |
942 |
|
|
Pool<Event>::Iterator itControlChangeEventOnCCList = itControlChangeEvent.moveToEndOf(pEngineChannel->pCCEvents); |
943 |
|
|
|
944 |
|
|
switch (itControlChangeEventOnCCList->Param.CC.Controller) { |
945 |
schoenebeck |
424 |
case 7: { // volume |
946 |
|
|
//TODO: not sample accurate yet |
947 |
schoenebeck |
473 |
pEngineChannel->GlobalVolume = (float) itControlChangeEventOnCCList->Param.CC.Value / 127.0f; |
948 |
schoenebeck |
424 |
break; |
949 |
|
|
} |
950 |
|
|
case 10: { // panpot |
951 |
|
|
//TODO: not sample accurate yet |
952 |
schoenebeck |
473 |
const int pan = (int) itControlChangeEventOnCCList->Param.CC.Value - 64; |
953 |
schoenebeck |
424 |
pEngineChannel->GlobalPanLeft = 1.0f - float(RTMath::Max(pan, 0)) / 63.0f; |
954 |
|
|
pEngineChannel->GlobalPanRight = 1.0f - float(RTMath::Min(pan, 0)) / -64.0f; |
955 |
|
|
break; |
956 |
|
|
} |
957 |
|
|
case 64: { // sustain |
958 |
schoenebeck |
473 |
if (itControlChangeEventOnCCList->Param.CC.Value >= 64 && !pEngineChannel->SustainPedal) { |
959 |
schoenebeck |
53 |
dmsg(4,("PEDAL DOWN\n")); |
960 |
schoenebeck |
411 |
pEngineChannel->SustainPedal = true; |
961 |
schoenebeck |
53 |
|
962 |
|
|
// cancel release process of voices if necessary |
963 |
schoenebeck |
411 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
964 |
schoenebeck |
473 |
for (; iuiKey; ++iuiKey) { |
965 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
966 |
|
|
if (!pKey->KeyPressed) { |
967 |
|
|
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
968 |
|
|
if (itNewEvent) { |
969 |
|
|
*itNewEvent = *itControlChangeEventOnCCList; // copy event to the key's own event list |
970 |
|
|
itNewEvent->Type = Event::type_cancel_release; // transform event type |
971 |
schoenebeck |
53 |
} |
972 |
schoenebeck |
473 |
else dmsg(1,("Event pool emtpy!\n")); |
973 |
schoenebeck |
53 |
} |
974 |
|
|
} |
975 |
|
|
} |
976 |
schoenebeck |
473 |
if (itControlChangeEventOnCCList->Param.CC.Value < 64 && pEngineChannel->SustainPedal) { |
977 |
schoenebeck |
53 |
dmsg(4,("PEDAL UP\n")); |
978 |
schoenebeck |
411 |
pEngineChannel->SustainPedal = false; |
979 |
schoenebeck |
53 |
|
980 |
|
|
// release voices if their respective key is not pressed |
981 |
schoenebeck |
411 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
982 |
schoenebeck |
473 |
for (; iuiKey; ++iuiKey) { |
983 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
984 |
|
|
if (!pKey->KeyPressed) { |
985 |
|
|
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
986 |
|
|
if (itNewEvent) { |
987 |
|
|
*itNewEvent = *itControlChangeEventOnCCList; // copy event to the key's own event list |
988 |
|
|
itNewEvent->Type = Event::type_release; // transform event type |
989 |
schoenebeck |
53 |
} |
990 |
schoenebeck |
473 |
else dmsg(1,("Event pool emtpy!\n")); |
991 |
schoenebeck |
53 |
} |
992 |
|
|
} |
993 |
|
|
} |
994 |
|
|
break; |
995 |
|
|
} |
996 |
|
|
|
997 |
|
|
|
998 |
schoenebeck |
473 |
// Channel Mode Messages |
999 |
|
|
|
1000 |
|
|
case 120: { // all sound off |
1001 |
|
|
KillAllVoices(pEngineChannel, itControlChangeEventOnCCList); |
1002 |
|
|
break; |
1003 |
|
|
} |
1004 |
|
|
case 121: { // reset all controllers |
1005 |
|
|
pEngineChannel->ResetControllers(); |
1006 |
|
|
break; |
1007 |
|
|
} |
1008 |
|
|
case 123: { // all notes off |
1009 |
|
|
ReleaseAllVoices(pEngineChannel, itControlChangeEventOnCCList); |
1010 |
|
|
break; |
1011 |
|
|
} |
1012 |
|
|
} |
1013 |
schoenebeck |
53 |
} |
1014 |
|
|
|
1015 |
|
|
/** |
1016 |
schoenebeck |
244 |
* Reacts on MIDI system exclusive messages. |
1017 |
|
|
* |
1018 |
schoenebeck |
271 |
* @param itSysexEvent - sysex data size and time stamp of the sysex event |
1019 |
schoenebeck |
244 |
*/ |
1020 |
schoenebeck |
271 |
void Engine::ProcessSysex(Pool<Event>::Iterator& itSysexEvent) { |
1021 |
schoenebeck |
244 |
RingBuffer<uint8_t>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader(); |
1022 |
|
|
|
1023 |
|
|
uint8_t exclusive_status, id; |
1024 |
|
|
if (!reader.pop(&exclusive_status)) goto free_sysex_data; |
1025 |
|
|
if (!reader.pop(&id)) goto free_sysex_data; |
1026 |
|
|
if (exclusive_status != 0xF0) goto free_sysex_data; |
1027 |
|
|
|
1028 |
|
|
switch (id) { |
1029 |
|
|
case 0x41: { // Roland |
1030 |
schoenebeck |
493 |
dmsg(3,("Roland Sysex\n")); |
1031 |
schoenebeck |
244 |
uint8_t device_id, model_id, cmd_id; |
1032 |
|
|
if (!reader.pop(&device_id)) goto free_sysex_data; |
1033 |
|
|
if (!reader.pop(&model_id)) goto free_sysex_data; |
1034 |
|
|
if (!reader.pop(&cmd_id)) goto free_sysex_data; |
1035 |
|
|
if (model_id != 0x42 /*GS*/) goto free_sysex_data; |
1036 |
|
|
if (cmd_id != 0x12 /*DT1*/) goto free_sysex_data; |
1037 |
|
|
|
1038 |
|
|
// command address |
1039 |
|
|
uint8_t addr[3]; // 2 byte addr MSB, followed by 1 byte addr LSB) |
1040 |
|
|
const RingBuffer<uint8_t>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later |
1041 |
|
|
if (reader.read(&addr[0], 3) != 3) goto free_sysex_data; |
1042 |
|
|
if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters |
1043 |
schoenebeck |
493 |
dmsg(3,("\tSystem Parameter\n")); |
1044 |
schoenebeck |
244 |
} |
1045 |
|
|
else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters |
1046 |
schoenebeck |
493 |
dmsg(3,("\tCommon Parameter\n")); |
1047 |
schoenebeck |
244 |
} |
1048 |
|
|
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1) |
1049 |
schoenebeck |
493 |
dmsg(3,("\tPart Parameter\n")); |
1050 |
|
|
switch (addr[2]) { |
1051 |
schoenebeck |
244 |
case 0x40: { // scale tuning |
1052 |
schoenebeck |
493 |
dmsg(3,("\t\tScale Tuning\n")); |
1053 |
schoenebeck |
244 |
uint8_t scale_tunes[12]; // detuning of all 12 semitones of an octave |
1054 |
|
|
if (reader.read(&scale_tunes[0], 12) != 12) goto free_sysex_data; |
1055 |
|
|
uint8_t checksum; |
1056 |
schoenebeck |
493 |
if (!reader.pop(&checksum)) goto free_sysex_data; |
1057 |
|
|
// some are not sending a GS checksum, so we ignore it for now |
1058 |
|
|
//if (GSCheckSum(checksum_reader, 12)) goto free_sysex_data; |
1059 |
schoenebeck |
244 |
for (int i = 0; i < 12; i++) scale_tunes[i] -= 64; |
1060 |
|
|
AdjustScale((int8_t*) scale_tunes); |
1061 |
schoenebeck |
493 |
dmsg(3,("\t\t\tNew scale applied.\n")); |
1062 |
schoenebeck |
244 |
break; |
1063 |
|
|
} |
1064 |
|
|
} |
1065 |
|
|
} |
1066 |
|
|
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2) |
1067 |
|
|
} |
1068 |
|
|
else if (addr[0] == 0x41) { // Drum Setup Parameters |
1069 |
|
|
} |
1070 |
|
|
break; |
1071 |
|
|
} |
1072 |
|
|
} |
1073 |
|
|
|
1074 |
|
|
free_sysex_data: // finally free sysex data |
1075 |
schoenebeck |
271 |
pSysexBuffer->increment_read_ptr(itSysexEvent->Param.Sysex.Size); |
1076 |
schoenebeck |
244 |
} |
1077 |
|
|
|
1078 |
|
|
/** |
1079 |
|
|
* Calculates the Roland GS sysex check sum. |
1080 |
|
|
* |
1081 |
|
|
* @param AddrReader - reader which currently points to the first GS |
1082 |
|
|
* command address byte of the GS sysex message in |
1083 |
|
|
* question |
1084 |
|
|
* @param DataSize - size of the GS message data (in bytes) |
1085 |
|
|
*/ |
1086 |
|
|
uint8_t Engine::GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize) { |
1087 |
|
|
RingBuffer<uint8_t>::NonVolatileReader reader = AddrReader; |
1088 |
|
|
uint bytes = 3 /*addr*/ + DataSize; |
1089 |
|
|
uint8_t addr_and_data[bytes]; |
1090 |
|
|
reader.read(&addr_and_data[0], bytes); |
1091 |
|
|
uint8_t sum = 0; |
1092 |
|
|
for (uint i = 0; i < bytes; i++) sum += addr_and_data[i]; |
1093 |
|
|
return 128 - sum % 128; |
1094 |
|
|
} |
1095 |
|
|
|
1096 |
|
|
/** |
1097 |
|
|
* Allows to tune each of the twelve semitones of an octave. |
1098 |
|
|
* |
1099 |
|
|
* @param ScaleTunes - detuning of all twelve semitones (in cents) |
1100 |
|
|
*/ |
1101 |
|
|
void Engine::AdjustScale(int8_t ScaleTunes[12]) { |
1102 |
|
|
memcpy(&this->ScaleTuning[0], &ScaleTunes[0], 12); //TODO: currently not sample accurate |
1103 |
|
|
} |
1104 |
|
|
|
1105 |
|
|
/** |
1106 |
schoenebeck |
473 |
* Releases all voices on an engine channel. All voices will go into |
1107 |
|
|
* the release stage and thus it might take some time (e.g. dependant to |
1108 |
|
|
* their envelope release time) until they actually die. |
1109 |
|
|
* |
1110 |
|
|
* @param pEngineChannel - engine channel on which all voices should be released |
1111 |
|
|
* @param itReleaseEvent - event which caused this releasing of all voices |
1112 |
|
|
*/ |
1113 |
|
|
void Engine::ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent) { |
1114 |
|
|
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1115 |
|
|
while (iuiKey) { |
1116 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1117 |
|
|
++iuiKey; |
1118 |
|
|
// append a 'release' event to the key's own event list |
1119 |
|
|
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
1120 |
|
|
if (itNewEvent) { |
1121 |
|
|
*itNewEvent = *itReleaseEvent; // copy original event (to the key's event list) |
1122 |
|
|
itNewEvent->Type = Event::type_release; // transform event type |
1123 |
|
|
} |
1124 |
|
|
else dmsg(1,("Event pool emtpy!\n")); |
1125 |
|
|
} |
1126 |
|
|
} |
1127 |
|
|
|
1128 |
|
|
/** |
1129 |
|
|
* Kills all voices on an engine channel as soon as possible. Voices |
1130 |
|
|
* won't get into release state, their volume level will be ramped down |
1131 |
|
|
* as fast as possible. |
1132 |
|
|
* |
1133 |
|
|
* @param pEngineChannel - engine channel on which all voices should be killed |
1134 |
|
|
* @param itKillEvent - event which caused this killing of all voices |
1135 |
|
|
*/ |
1136 |
|
|
void Engine::KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent) { |
1137 |
|
|
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1138 |
|
|
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
1139 |
|
|
while (iuiKey != end) { // iterate through all active keys |
1140 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1141 |
|
|
++iuiKey; |
1142 |
|
|
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
1143 |
|
|
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
1144 |
|
|
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
1145 |
|
|
itVoice->Kill(itKillEvent); |
1146 |
|
|
} |
1147 |
|
|
} |
1148 |
|
|
} |
1149 |
|
|
|
1150 |
|
|
/** |
1151 |
schoenebeck |
53 |
* Initialize the parameter sequence for the modulation destination given by |
1152 |
|
|
* by 'dst' with the constant value given by val. |
1153 |
|
|
*/ |
1154 |
|
|
void Engine::ResetSynthesisParameters(Event::destination_t dst, float val) { |
1155 |
|
|
int maxsamples = pAudioOutputDevice->MaxSamplesPerCycle(); |
1156 |
schoenebeck |
80 |
float* m = &pSynthesisParameters[dst][0]; |
1157 |
|
|
for (int i = 0; i < maxsamples; i += 4) { |
1158 |
|
|
m[i] = val; |
1159 |
|
|
m[i+1] = val; |
1160 |
|
|
m[i+2] = val; |
1161 |
|
|
m[i+3] = val; |
1162 |
|
|
} |
1163 |
persson |
438 |
} |
1164 |
schoenebeck |
53 |
|
1165 |
|
|
uint Engine::VoiceCount() { |
1166 |
|
|
return ActiveVoiceCount; |
1167 |
|
|
} |
1168 |
|
|
|
1169 |
|
|
uint Engine::VoiceCountMax() { |
1170 |
|
|
return ActiveVoiceCountMax; |
1171 |
|
|
} |
1172 |
|
|
|
1173 |
|
|
bool Engine::DiskStreamSupported() { |
1174 |
|
|
return true; |
1175 |
|
|
} |
1176 |
|
|
|
1177 |
|
|
uint Engine::DiskStreamCount() { |
1178 |
|
|
return (pDiskThread) ? pDiskThread->ActiveStreamCount : 0; |
1179 |
|
|
} |
1180 |
|
|
|
1181 |
|
|
uint Engine::DiskStreamCountMax() { |
1182 |
|
|
return (pDiskThread) ? pDiskThread->ActiveStreamCountMax : 0; |
1183 |
|
|
} |
1184 |
|
|
|
1185 |
|
|
String Engine::DiskStreamBufferFillBytes() { |
1186 |
|
|
return pDiskThread->GetBufferFillBytes(); |
1187 |
|
|
} |
1188 |
|
|
|
1189 |
|
|
String Engine::DiskStreamBufferFillPercentage() { |
1190 |
|
|
return pDiskThread->GetBufferFillPercentage(); |
1191 |
|
|
} |
1192 |
|
|
|
1193 |
senkov |
112 |
String Engine::EngineName() { |
1194 |
schoenebeck |
475 |
return LS_GIG_ENGINE_NAME; |
1195 |
senkov |
112 |
} |
1196 |
|
|
|
1197 |
schoenebeck |
53 |
String Engine::Description() { |
1198 |
|
|
return "Gigasampler Engine"; |
1199 |
|
|
} |
1200 |
|
|
|
1201 |
|
|
String Engine::Version() { |
1202 |
persson |
497 |
String s = "$Revision: 1.36 $"; |
1203 |
schoenebeck |
123 |
return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
1204 |
schoenebeck |
53 |
} |
1205 |
|
|
|
1206 |
|
|
}} // namespace LinuxSampler::gig |