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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>(CONFIG_SYSEX_BUFFER_SIZE, 0); |
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pEventQueue = new RingBuffer<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0); |
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pEventPool = new Pool<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT); |
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pVoicePool = new Pool<Voice>(CONFIG_MAX_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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ResetScaleTuning(); |
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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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ResetScaleTuning(); |
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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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itLastStolenVoiceGlobally = RTList<Voice>::Iterator(); |
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iuiLastStolenKey = RTList<uint>::Iterator(); |
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iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); |
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pLastStolenChannel = 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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// 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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* Reset to normal, chromatic scale (means equal tempered). |
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*/ |
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void Engine::ResetScaleTuning() { |
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memset(&ScaleTuning[0], 0x00, 12); |
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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) * CONFIG_EG_MIN_RELEASE_TIME) - 1; |
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if (MaxFadeOutPos < 0) |
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throw LinuxSamplerException("CONFIG_EG_MIN_RELEASE_TIME 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() << CONFIG_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. |
346 |
|
|
* AlsaIO or JackIO) right after. |
347 |
|
|
* |
348 |
|
|
* @param Samples - number of sample points to be rendered |
349 |
|
|
* @returns 0 on success |
350 |
|
|
*/ |
351 |
schoenebeck |
412 |
int Engine::RenderAudio(uint Samples) { |
352 |
schoenebeck |
53 |
dmsg(5,("RenderAudio(Samples=%d)\n", Samples)); |
353 |
|
|
|
354 |
schoenebeck |
412 |
// return if engine disabled |
355 |
schoenebeck |
53 |
if (EngineDisabled.Pop()) { |
356 |
|
|
dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe())); |
357 |
|
|
return 0; |
358 |
|
|
} |
359 |
|
|
|
360 |
schoenebeck |
293 |
// update time of start and end of this audio fragment (as events' time stamps relate to this) |
361 |
|
|
pEventGenerator->UpdateFragmentTime(Samples); |
362 |
|
|
|
363 |
schoenebeck |
663 |
// We only allow a maximum of CONFIG_MAX_VOICES voices to be spawned |
364 |
|
|
// in each audio fragment. All subsequent request for spawning new |
365 |
|
|
// voices in the same audio fragment will be ignored. |
366 |
|
|
VoiceSpawnsLeft = CONFIG_MAX_VOICES; |
367 |
|
|
|
368 |
schoenebeck |
412 |
// get all events from the engine's global input event queue which belong to the current fragment |
369 |
|
|
// (these are usually just SysEx messages) |
370 |
schoenebeck |
460 |
ImportEvents(Samples); |
371 |
schoenebeck |
412 |
|
372 |
|
|
// process engine global events (these are currently only MIDI System Exclusive messages) |
373 |
|
|
{ |
374 |
schoenebeck |
460 |
RTList<Event>::Iterator itEvent = pGlobalEvents->first(); |
375 |
|
|
RTList<Event>::Iterator end = pGlobalEvents->end(); |
376 |
schoenebeck |
412 |
for (; itEvent != end; ++itEvent) { |
377 |
|
|
switch (itEvent->Type) { |
378 |
|
|
case Event::type_sysex: |
379 |
|
|
dmsg(5,("Engine: Sysex received\n")); |
380 |
|
|
ProcessSysex(itEvent); |
381 |
|
|
break; |
382 |
|
|
} |
383 |
|
|
} |
384 |
schoenebeck |
53 |
} |
385 |
schoenebeck |
412 |
|
386 |
|
|
// reset internal voice counter (just for statistic of active voices) |
387 |
|
|
ActiveVoiceCountTemp = 0; |
388 |
|
|
|
389 |
schoenebeck |
466 |
// handle events on all engine channels |
390 |
schoenebeck |
460 |
for (int i = 0; i < engineChannels.size(); i++) { |
391 |
|
|
if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded |
392 |
|
|
ProcessEvents(engineChannels[i], Samples); |
393 |
schoenebeck |
466 |
} |
394 |
|
|
|
395 |
|
|
// render all 'normal', active voices on all engine channels |
396 |
|
|
for (int i = 0; i < engineChannels.size(); i++) { |
397 |
|
|
if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded |
398 |
schoenebeck |
460 |
RenderActiveVoices(engineChannels[i], Samples); |
399 |
schoenebeck |
412 |
} |
400 |
|
|
|
401 |
schoenebeck |
460 |
// now that all ordinary voices on ALL engine channels are rendered, render new stolen voices |
402 |
|
|
RenderStolenVoices(Samples); |
403 |
|
|
|
404 |
|
|
// handle cleanup on all engine channels for the next audio fragment |
405 |
|
|
for (int i = 0; i < engineChannels.size(); i++) { |
406 |
|
|
if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded |
407 |
|
|
PostProcess(engineChannels[i]); |
408 |
|
|
} |
409 |
|
|
|
410 |
|
|
|
411 |
|
|
// empty the engine's event list for the next audio fragment |
412 |
|
|
ClearEventLists(); |
413 |
|
|
|
414 |
|
|
// reset voice stealing for the next audio fragment |
415 |
|
|
pVoiceStealingQueue->clear(); |
416 |
|
|
|
417 |
schoenebeck |
412 |
// just some statistics about this engine instance |
418 |
|
|
ActiveVoiceCount = ActiveVoiceCountTemp; |
419 |
|
|
if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount; |
420 |
|
|
|
421 |
persson |
630 |
FrameTime += Samples; |
422 |
|
|
|
423 |
schoenebeck |
412 |
return 0; |
424 |
|
|
} |
425 |
|
|
|
426 |
schoenebeck |
473 |
/** |
427 |
|
|
* Dispatch and handle all events in this audio fragment for the given |
428 |
|
|
* engine channel. |
429 |
|
|
* |
430 |
|
|
* @param pEngineChannel - engine channel on which events should be |
431 |
|
|
* processed |
432 |
|
|
* @param Samples - amount of sample points to be processed in |
433 |
|
|
* this audio fragment cycle |
434 |
|
|
*/ |
435 |
schoenebeck |
460 |
void Engine::ProcessEvents(EngineChannel* pEngineChannel, uint Samples) { |
436 |
schoenebeck |
412 |
// get all events from the engine channels's input event queue which belong to the current fragment |
437 |
|
|
// (these are the common events like NoteOn, NoteOff, ControlChange, etc.) |
438 |
schoenebeck |
460 |
pEngineChannel->ImportEvents(Samples); |
439 |
schoenebeck |
53 |
|
440 |
|
|
// process events |
441 |
schoenebeck |
271 |
{ |
442 |
schoenebeck |
460 |
RTList<Event>::Iterator itEvent = pEngineChannel->pEvents->first(); |
443 |
|
|
RTList<Event>::Iterator end = pEngineChannel->pEvents->end(); |
444 |
schoenebeck |
271 |
for (; itEvent != end; ++itEvent) { |
445 |
|
|
switch (itEvent->Type) { |
446 |
|
|
case Event::type_note_on: |
447 |
|
|
dmsg(5,("Engine: Note on received\n")); |
448 |
schoenebeck |
412 |
ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent); |
449 |
schoenebeck |
271 |
break; |
450 |
|
|
case Event::type_note_off: |
451 |
|
|
dmsg(5,("Engine: Note off received\n")); |
452 |
schoenebeck |
412 |
ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent); |
453 |
schoenebeck |
271 |
break; |
454 |
|
|
case Event::type_control_change: |
455 |
|
|
dmsg(5,("Engine: MIDI CC received\n")); |
456 |
schoenebeck |
412 |
ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent); |
457 |
schoenebeck |
271 |
break; |
458 |
|
|
case Event::type_pitchbend: |
459 |
|
|
dmsg(5,("Engine: Pitchbend received\n")); |
460 |
schoenebeck |
412 |
ProcessPitchbend((EngineChannel*)itEvent->pEngineChannel, itEvent); |
461 |
schoenebeck |
271 |
break; |
462 |
|
|
} |
463 |
schoenebeck |
53 |
} |
464 |
|
|
} |
465 |
schoenebeck |
649 |
|
466 |
|
|
// reset voice stealing for the next engine channel (or next audio fragment) |
467 |
|
|
itLastStolenVoice = RTList<Voice>::Iterator(); |
468 |
|
|
itLastStolenVoiceGlobally = RTList<Voice>::Iterator(); |
469 |
|
|
iuiLastStolenKey = RTList<uint>::Iterator(); |
470 |
|
|
iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); |
471 |
|
|
pLastStolenChannel = NULL; |
472 |
schoenebeck |
460 |
} |
473 |
schoenebeck |
53 |
|
474 |
schoenebeck |
473 |
/** |
475 |
|
|
* Render all 'normal' voices (that is voices which were not stolen in |
476 |
|
|
* this fragment) on the given engine channel. |
477 |
|
|
* |
478 |
|
|
* @param pEngineChannel - engine channel on which audio should be |
479 |
|
|
* rendered |
480 |
|
|
* @param Samples - amount of sample points to be rendered in |
481 |
|
|
* this audio fragment cycle |
482 |
|
|
*/ |
483 |
schoenebeck |
460 |
void Engine::RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples) { |
484 |
|
|
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
485 |
|
|
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
486 |
|
|
while (iuiKey != end) { // iterate through all active keys |
487 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
488 |
|
|
++iuiKey; |
489 |
schoenebeck |
53 |
|
490 |
schoenebeck |
460 |
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
491 |
|
|
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
492 |
|
|
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
493 |
|
|
// now render current voice |
494 |
|
|
itVoice->Render(Samples); |
495 |
|
|
if (itVoice->IsActive()) ActiveVoiceCountTemp++; // still active |
496 |
|
|
else { // voice reached end, is now inactive |
497 |
|
|
FreeVoice(pEngineChannel, itVoice); // remove voice from the list of active voices |
498 |
schoenebeck |
53 |
} |
499 |
|
|
} |
500 |
|
|
} |
501 |
schoenebeck |
460 |
} |
502 |
schoenebeck |
53 |
|
503 |
schoenebeck |
473 |
/** |
504 |
|
|
* Render all stolen voices (only voices which were stolen in this |
505 |
|
|
* fragment) on the given engine channel. Stolen voices are rendered |
506 |
|
|
* after all normal voices have been rendered; this is needed to render |
507 |
|
|
* audio of those voices which were selected for voice stealing until |
508 |
|
|
* the point were the stealing (that is the take over of the voice) |
509 |
|
|
* actually happened. |
510 |
|
|
* |
511 |
|
|
* @param pEngineChannel - engine channel on which audio should be |
512 |
|
|
* rendered |
513 |
|
|
* @param Samples - amount of sample points to be rendered in |
514 |
|
|
* this audio fragment cycle |
515 |
|
|
*/ |
516 |
schoenebeck |
460 |
void Engine::RenderStolenVoices(uint Samples) { |
517 |
|
|
RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first(); |
518 |
|
|
RTList<Event>::Iterator end = pVoiceStealingQueue->end(); |
519 |
|
|
for (; itVoiceStealEvent != end; ++itVoiceStealEvent) { |
520 |
|
|
EngineChannel* pEngineChannel = (EngineChannel*) itVoiceStealEvent->pEngineChannel; |
521 |
|
|
Pool<Voice>::Iterator itNewVoice = |
522 |
schoenebeck |
668 |
LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false, false); |
523 |
schoenebeck |
460 |
if (itNewVoice) { |
524 |
|
|
itNewVoice->Render(Samples); |
525 |
|
|
if (itNewVoice->IsActive()) ActiveVoiceCountTemp++; // still active |
526 |
|
|
else { // voice reached end, is now inactive |
527 |
|
|
FreeVoice(pEngineChannel, itNewVoice); // remove voice from the list of active voices |
528 |
schoenebeck |
250 |
} |
529 |
|
|
} |
530 |
schoenebeck |
460 |
else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n")); |
531 |
schoenebeck |
473 |
|
532 |
|
|
// we need to clear the key's event list explicitly here in case key was never active |
533 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoiceStealEvent->Param.Note.Key]; |
534 |
|
|
pKey->VoiceTheftsQueued--; |
535 |
|
|
if (!pKey->Active && !pKey->VoiceTheftsQueued) pKey->pEvents->clear(); |
536 |
schoenebeck |
250 |
} |
537 |
schoenebeck |
460 |
} |
538 |
schoenebeck |
250 |
|
539 |
schoenebeck |
473 |
/** |
540 |
|
|
* Free all keys which have turned inactive in this audio fragment, from |
541 |
|
|
* the list of active keys and clear all event lists on that engine |
542 |
|
|
* channel. |
543 |
|
|
* |
544 |
|
|
* @param pEngineChannel - engine channel to cleanup |
545 |
|
|
*/ |
546 |
schoenebeck |
460 |
void Engine::PostProcess(EngineChannel* pEngineChannel) { |
547 |
schoenebeck |
287 |
// free all keys which have no active voices left |
548 |
|
|
{ |
549 |
schoenebeck |
411 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
550 |
|
|
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
551 |
schoenebeck |
287 |
while (iuiKey != end) { // iterate through all active keys |
552 |
schoenebeck |
411 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
553 |
schoenebeck |
287 |
++iuiKey; |
554 |
schoenebeck |
411 |
if (pKey->pActiveVoices->isEmpty()) FreeKey(pEngineChannel, pKey); |
555 |
schoenebeck |
554 |
#if CONFIG_DEVMODE |
556 |
schoenebeck |
563 |
else { // just a sanity check for debugging |
557 |
schoenebeck |
287 |
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
558 |
|
|
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
559 |
|
|
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
560 |
|
|
if (itVoice->itKillEvent) { |
561 |
|
|
dmsg(1,("gig::Engine: ERROR, killed voice survived !!!\n")); |
562 |
|
|
} |
563 |
|
|
} |
564 |
|
|
} |
565 |
schoenebeck |
554 |
#endif // CONFIG_DEVMODE |
566 |
schoenebeck |
287 |
} |
567 |
|
|
} |
568 |
schoenebeck |
460 |
|
569 |
|
|
// empty the engine channel's own event lists |
570 |
|
|
pEngineChannel->ClearEventLists(); |
571 |
schoenebeck |
412 |
} |
572 |
schoenebeck |
287 |
|
573 |
schoenebeck |
53 |
/** |
574 |
schoenebeck |
244 |
* Will be called by the MIDI input device whenever a MIDI system |
575 |
|
|
* exclusive message has arrived. |
576 |
|
|
* |
577 |
|
|
* @param pData - pointer to sysex data |
578 |
|
|
* @param Size - lenght of sysex data (in bytes) |
579 |
|
|
*/ |
580 |
|
|
void Engine::SendSysex(void* pData, uint Size) { |
581 |
schoenebeck |
246 |
Event event = pEventGenerator->CreateEvent(); |
582 |
|
|
event.Type = Event::type_sysex; |
583 |
|
|
event.Param.Sysex.Size = Size; |
584 |
schoenebeck |
412 |
event.pEngineChannel = NULL; // as Engine global event |
585 |
schoenebeck |
244 |
if (pEventQueue->write_space() > 0) { |
586 |
|
|
if (pSysexBuffer->write_space() >= Size) { |
587 |
|
|
// copy sysex data to input buffer |
588 |
|
|
uint toWrite = Size; |
589 |
|
|
uint8_t* pPos = (uint8_t*) pData; |
590 |
|
|
while (toWrite) { |
591 |
|
|
const uint writeNow = RTMath::Min(toWrite, pSysexBuffer->write_space_to_end()); |
592 |
|
|
pSysexBuffer->write(pPos, writeNow); |
593 |
|
|
toWrite -= writeNow; |
594 |
|
|
pPos += writeNow; |
595 |
|
|
|
596 |
|
|
} |
597 |
|
|
// finally place sysex event into input event queue |
598 |
|
|
pEventQueue->push(&event); |
599 |
|
|
} |
600 |
schoenebeck |
554 |
else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,CONFIG_SYSEX_BUFFER_SIZE)); |
601 |
schoenebeck |
244 |
} |
602 |
|
|
else dmsg(1,("Engine: Input event queue full!")); |
603 |
|
|
} |
604 |
|
|
|
605 |
|
|
/** |
606 |
schoenebeck |
53 |
* Assigns and triggers a new voice for the respective MIDI key. |
607 |
|
|
* |
608 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
609 |
schoenebeck |
271 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
610 |
schoenebeck |
53 |
*/ |
611 |
schoenebeck |
411 |
void Engine::ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) { |
612 |
persson |
438 |
|
613 |
schoenebeck |
354 |
const int key = itNoteOnEvent->Param.Note.Key; |
614 |
|
|
|
615 |
|
|
// Change key dimension value if key is in keyswitching area |
616 |
schoenebeck |
411 |
{ |
617 |
|
|
const ::gig::Instrument* pInstrument = pEngineChannel->pInstrument; |
618 |
|
|
if (key >= pInstrument->DimensionKeyRange.low && key <= pInstrument->DimensionKeyRange.high) |
619 |
|
|
pEngineChannel->CurrentKeyDimension = ((key - pInstrument->DimensionKeyRange.low) * 128) / |
620 |
|
|
(pInstrument->DimensionKeyRange.high - pInstrument->DimensionKeyRange.low + 1); |
621 |
|
|
} |
622 |
schoenebeck |
354 |
|
623 |
schoenebeck |
411 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[key]; |
624 |
schoenebeck |
354 |
|
625 |
schoenebeck |
53 |
pKey->KeyPressed = true; // the MIDI key was now pressed down |
626 |
persson |
630 |
pKey->Velocity = itNoteOnEvent->Param.Note.Velocity; |
627 |
|
|
pKey->NoteOnTime = FrameTime + itNoteOnEvent->FragmentPos(); // will be used to calculate note length |
628 |
schoenebeck |
53 |
|
629 |
|
|
// cancel release process of voices on this key if needed |
630 |
schoenebeck |
411 |
if (pKey->Active && !pEngineChannel->SustainPedal) { |
631 |
schoenebeck |
271 |
RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend(); |
632 |
|
|
if (itCancelReleaseEvent) { |
633 |
|
|
*itCancelReleaseEvent = *itNoteOnEvent; // copy event |
634 |
|
|
itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type |
635 |
schoenebeck |
239 |
} |
636 |
|
|
else dmsg(1,("Event pool emtpy!\n")); |
637 |
schoenebeck |
53 |
} |
638 |
|
|
|
639 |
schoenebeck |
271 |
// move note on event to the key's own event list |
640 |
|
|
RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents); |
641 |
|
|
|
642 |
schoenebeck |
460 |
// allocate and trigger new voice(s) for the key |
643 |
|
|
{ |
644 |
|
|
// first, get total amount of required voices (dependant on amount of layers) |
645 |
|
|
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOnEventOnKeyList->Param.Note.Key); |
646 |
|
|
if (pRegion) { |
647 |
|
|
int voicesRequired = pRegion->Layers; |
648 |
|
|
// now launch the required amount of voices |
649 |
|
|
for (int i = 0; i < voicesRequired; i++) |
650 |
schoenebeck |
668 |
LaunchVoice(pEngineChannel, itNoteOnEventOnKeyList, i, false, true, true); |
651 |
schoenebeck |
460 |
} |
652 |
|
|
} |
653 |
persson |
438 |
|
654 |
schoenebeck |
473 |
// if neither a voice was spawned or postponed then remove note on event from key again |
655 |
|
|
if (!pKey->Active && !pKey->VoiceTheftsQueued) |
656 |
|
|
pKey->pEvents->free(itNoteOnEventOnKeyList); |
657 |
|
|
|
658 |
persson |
438 |
pKey->RoundRobinIndex++; |
659 |
schoenebeck |
53 |
} |
660 |
|
|
|
661 |
|
|
/** |
662 |
|
|
* Releases the voices on the given key if sustain pedal is not pressed. |
663 |
|
|
* If sustain is pressed, the release of the note will be postponed until |
664 |
|
|
* sustain pedal will be released or voice turned inactive by itself (e.g. |
665 |
|
|
* due to completion of sample playback). |
666 |
|
|
* |
667 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
668 |
schoenebeck |
271 |
* @param itNoteOffEvent - key, velocity and time stamp of the event |
669 |
schoenebeck |
53 |
*/ |
670 |
schoenebeck |
411 |
void Engine::ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) { |
671 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key]; |
672 |
schoenebeck |
53 |
|
673 |
|
|
pKey->KeyPressed = false; // the MIDI key was now released |
674 |
|
|
|
675 |
|
|
// release voices on this key if needed |
676 |
schoenebeck |
411 |
if (pKey->Active && !pEngineChannel->SustainPedal) { |
677 |
schoenebeck |
271 |
itNoteOffEvent->Type = Event::type_release; // transform event type |
678 |
schoenebeck |
242 |
|
679 |
persson |
497 |
// move event to the key's own event list |
680 |
|
|
RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents); |
681 |
schoenebeck |
271 |
|
682 |
persson |
497 |
// spawn release triggered voice(s) if needed |
683 |
persson |
630 |
if (pKey->ReleaseTrigger) { |
684 |
persson |
497 |
// first, get total amount of required voices (dependant on amount of layers) |
685 |
|
|
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOffEventOnKeyList->Param.Note.Key); |
686 |
|
|
if (pRegion) { |
687 |
|
|
int voicesRequired = pRegion->Layers; |
688 |
persson |
630 |
|
689 |
|
|
// MIDI note-on velocity is used instead of note-off velocity |
690 |
|
|
itNoteOffEventOnKeyList->Param.Note.Velocity = pKey->Velocity; |
691 |
|
|
|
692 |
persson |
497 |
// now launch the required amount of voices |
693 |
|
|
for (int i = 0; i < voicesRequired; i++) |
694 |
schoenebeck |
668 |
LaunchVoice(pEngineChannel, itNoteOffEventOnKeyList, i, true, false, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples |
695 |
persson |
497 |
} |
696 |
|
|
pKey->ReleaseTrigger = false; |
697 |
schoenebeck |
460 |
} |
698 |
persson |
497 |
|
699 |
|
|
// if neither a voice was spawned or postponed then remove note off event from key again |
700 |
|
|
if (!pKey->Active && !pKey->VoiceTheftsQueued) |
701 |
|
|
pKey->pEvents->free(itNoteOffEventOnKeyList); |
702 |
schoenebeck |
242 |
} |
703 |
schoenebeck |
53 |
} |
704 |
|
|
|
705 |
|
|
/** |
706 |
|
|
* Moves pitchbend event from the general (input) event list to the pitch |
707 |
|
|
* event list. |
708 |
|
|
* |
709 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
710 |
schoenebeck |
271 |
* @param itPitchbendEvent - absolute pitch value and time stamp of the event |
711 |
schoenebeck |
53 |
*/ |
712 |
schoenebeck |
411 |
void Engine::ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent) { |
713 |
|
|
pEngineChannel->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value |
714 |
schoenebeck |
460 |
itPitchbendEvent.moveToEndOf(pEngineChannel->pSynthesisEvents[Event::destination_vco]); |
715 |
schoenebeck |
53 |
} |
716 |
|
|
|
717 |
|
|
/** |
718 |
schoenebeck |
233 |
* Allocates and triggers a new voice. This method will usually be |
719 |
|
|
* called by the ProcessNoteOn() method and by the voices itself |
720 |
|
|
* (e.g. to spawn further voices on the same key for layered sounds). |
721 |
|
|
* |
722 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
723 |
schoenebeck |
271 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
724 |
schoenebeck |
242 |
* @param iLayer - layer index for the new voice (optional - only |
725 |
|
|
* in case of layered sounds of course) |
726 |
|
|
* @param ReleaseTriggerVoice - if new voice is a release triggered voice |
727 |
|
|
* (optional, default = false) |
728 |
schoenebeck |
250 |
* @param VoiceStealing - if voice stealing should be performed |
729 |
|
|
* when there is no free voice |
730 |
|
|
* (optional, default = true) |
731 |
schoenebeck |
668 |
* @param HandleKeyGroupConflicts - if voices should be killed due to a |
732 |
|
|
* key group conflict |
733 |
schoenebeck |
250 |
* @returns pointer to new voice or NULL if there was no free voice or |
734 |
schoenebeck |
354 |
* if the voice wasn't triggered (for example when no region is |
735 |
|
|
* defined for the given key). |
736 |
schoenebeck |
233 |
*/ |
737 |
schoenebeck |
668 |
Pool<Voice>::Iterator Engine::LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing, bool HandleKeyGroupConflicts) { |
738 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key]; |
739 |
|
|
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOnEvent->Param.Note.Key); |
740 |
schoenebeck |
233 |
|
741 |
schoenebeck |
668 |
// if nothing defined for this key |
742 |
|
|
if (!pRegion) return Pool<Voice>::Iterator(); // nothing to do |
743 |
|
|
|
744 |
|
|
// handle key group (a.k.a. exclusive group) conflicts |
745 |
|
|
if (HandleKeyGroupConflicts) { |
746 |
|
|
// only mark the first voice of a layered voice (group) to be in a |
747 |
|
|
// key group, so the layered voices won't kill each other |
748 |
|
|
int iKeyGroup = (iLayer == 0 && !ReleaseTriggerVoice) ? pRegion->KeyGroup : 0; |
749 |
|
|
if (iKeyGroup) { // if this voice / key belongs to a key group |
750 |
|
|
uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[iKeyGroup]; |
751 |
|
|
if (*ppKeyGroup) { // if there's already an active key in that key group |
752 |
|
|
midi_key_info_t* pOtherKey = &pEngineChannel->pMIDIKeyInfo[**ppKeyGroup]; |
753 |
|
|
// kill all voices on the (other) key |
754 |
|
|
RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first(); |
755 |
|
|
RTList<Voice>::Iterator end = pOtherKey->pActiveVoices->end(); |
756 |
|
|
for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) { |
757 |
|
|
if (itVoiceToBeKilled->Type != Voice::type_release_trigger) { |
758 |
|
|
itVoiceToBeKilled->Kill(itNoteOnEvent); |
759 |
|
|
--VoiceSpawnsLeft; //FIXME: just a hack, we should better check in StealVoice() if the voice was killed due to key conflict |
760 |
|
|
} |
761 |
|
|
} |
762 |
|
|
} |
763 |
|
|
} |
764 |
|
|
} |
765 |
|
|
|
766 |
schoenebeck |
233 |
// allocate a new voice for the key |
767 |
schoenebeck |
271 |
Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend(); |
768 |
|
|
if (itNewVoice) { |
769 |
schoenebeck |
233 |
// launch the new voice |
770 |
schoenebeck |
411 |
if (itNewVoice->Trigger(pEngineChannel, itNoteOnEvent, pEngineChannel->Pitch, pEngineChannel->pInstrument, iLayer, ReleaseTriggerVoice, VoiceStealing) < 0) { |
771 |
schoenebeck |
354 |
dmsg(4,("Voice not triggered\n")); |
772 |
schoenebeck |
271 |
pKey->pActiveVoices->free(itNewVoice); |
773 |
schoenebeck |
233 |
} |
774 |
schoenebeck |
239 |
else { // on success |
775 |
schoenebeck |
663 |
--VoiceSpawnsLeft; |
776 |
schoenebeck |
239 |
if (!pKey->Active) { // mark as active key |
777 |
|
|
pKey->Active = true; |
778 |
schoenebeck |
411 |
pKey->itSelf = pEngineChannel->pActiveKeys->allocAppend(); |
779 |
schoenebeck |
271 |
*pKey->itSelf = itNoteOnEvent->Param.Note.Key; |
780 |
schoenebeck |
239 |
} |
781 |
schoenebeck |
271 |
if (itNewVoice->KeyGroup) { |
782 |
schoenebeck |
668 |
uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[itNewVoice->KeyGroup]; |
783 |
schoenebeck |
271 |
*ppKeyGroup = &*pKey->itSelf; // put key as the (new) active key to its key group |
784 |
schoenebeck |
239 |
} |
785 |
schoenebeck |
271 |
if (itNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s) |
786 |
|
|
return itNewVoice; // success |
787 |
schoenebeck |
233 |
} |
788 |
|
|
} |
789 |
schoenebeck |
285 |
else if (VoiceStealing) { |
790 |
schoenebeck |
460 |
// try to steal one voice |
791 |
schoenebeck |
473 |
int result = StealVoice(pEngineChannel, itNoteOnEvent); |
792 |
|
|
if (!result) { // voice stolen successfully |
793 |
|
|
// put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died |
794 |
|
|
RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend(); |
795 |
|
|
if (itStealEvent) { |
796 |
|
|
*itStealEvent = *itNoteOnEvent; // copy event |
797 |
|
|
itStealEvent->Param.Note.Layer = iLayer; |
798 |
|
|
itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice; |
799 |
|
|
pKey->VoiceTheftsQueued++; |
800 |
|
|
} |
801 |
|
|
else dmsg(1,("Voice stealing queue full!\n")); |
802 |
schoenebeck |
285 |
} |
803 |
|
|
} |
804 |
|
|
|
805 |
schoenebeck |
271 |
return Pool<Voice>::Iterator(); // no free voice or error |
806 |
schoenebeck |
233 |
} |
807 |
|
|
|
808 |
|
|
/** |
809 |
schoenebeck |
250 |
* Will be called by LaunchVoice() method in case there are no free |
810 |
|
|
* voices left. This method will select and kill one old voice for |
811 |
|
|
* voice stealing and postpone the note-on event until the selected |
812 |
|
|
* voice actually died. |
813 |
|
|
* |
814 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
815 |
schoenebeck |
285 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
816 |
schoenebeck |
473 |
* @returns 0 on success, a value < 0 if no active voice could be picked for voice stealing |
817 |
schoenebeck |
250 |
*/ |
818 |
schoenebeck |
473 |
int Engine::StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) { |
819 |
schoenebeck |
663 |
if (VoiceSpawnsLeft <= 0) { |
820 |
schoenebeck |
554 |
dmsg(1,("Max. voice thefts per audio fragment reached (you may raise CONFIG_MAX_VOICES).\n")); |
821 |
schoenebeck |
473 |
return -1; |
822 |
schoenebeck |
460 |
} |
823 |
schoenebeck |
271 |
if (!pEventPool->poolIsEmpty()) { |
824 |
schoenebeck |
250 |
|
825 |
schoenebeck |
460 |
RTList<Voice>::Iterator itSelectedVoice; |
826 |
schoenebeck |
250 |
|
827 |
|
|
// Select one voice for voice stealing |
828 |
schoenebeck |
554 |
switch (CONFIG_VOICE_STEAL_ALGO) { |
829 |
schoenebeck |
250 |
|
830 |
|
|
// try to pick the oldest voice on the key where the new |
831 |
|
|
// voice should be spawned, if there is no voice on that |
832 |
schoenebeck |
563 |
// key, or no voice left to kill, then procceed with |
833 |
schoenebeck |
250 |
// 'oldestkey' algorithm |
834 |
schoenebeck |
460 |
case voice_steal_algo_oldestvoiceonkey: { |
835 |
|
|
midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key]; |
836 |
schoenebeck |
563 |
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
837 |
|
|
// proceed iterating if voice was created in this fragment cycle |
838 |
schoenebeck |
663 |
while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice; |
839 |
schoenebeck |
563 |
// if we haven't found a voice then proceed with algorithm 'oldestkey' |
840 |
schoenebeck |
663 |
if (itSelectedVoice && itSelectedVoice->IsStealable()) break; |
841 |
schoenebeck |
250 |
} // no break - intentional ! |
842 |
|
|
|
843 |
|
|
// try to pick the oldest voice on the oldest active key |
844 |
schoenebeck |
563 |
// from the same engine channel |
845 |
schoenebeck |
460 |
// (caution: must stay after 'oldestvoiceonkey' algorithm !) |
846 |
schoenebeck |
250 |
case voice_steal_algo_oldestkey: { |
847 |
schoenebeck |
649 |
// if we already stole in this fragment, try to proceed on same key |
848 |
schoenebeck |
460 |
if (this->itLastStolenVoice) { |
849 |
|
|
itSelectedVoice = this->itLastStolenVoice; |
850 |
schoenebeck |
649 |
do { |
851 |
|
|
++itSelectedVoice; |
852 |
schoenebeck |
663 |
} while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle |
853 |
schoenebeck |
649 |
// found a "stealable" voice ? |
854 |
schoenebeck |
663 |
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
855 |
schoenebeck |
649 |
// remember which voice we stole, so we can simply proceed on next voice stealing |
856 |
|
|
this->itLastStolenVoice = itSelectedVoice; |
857 |
schoenebeck |
460 |
break; // selection succeeded |
858 |
schoenebeck |
250 |
} |
859 |
|
|
} |
860 |
schoenebeck |
649 |
// get (next) oldest key |
861 |
|
|
RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKey) ? ++this->iuiLastStolenKey : pEngineChannel->pActiveKeys->first(); |
862 |
|
|
while (iuiSelectedKey) { |
863 |
|
|
midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey]; |
864 |
schoenebeck |
659 |
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
865 |
schoenebeck |
649 |
// proceed iterating if voice was created in this fragment cycle |
866 |
schoenebeck |
663 |
while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice; |
867 |
schoenebeck |
649 |
// found a "stealable" voice ? |
868 |
schoenebeck |
663 |
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
869 |
schoenebeck |
649 |
// remember which voice on which key we stole, so we can simply proceed on next voice stealing |
870 |
|
|
this->iuiLastStolenKey = iuiSelectedKey; |
871 |
|
|
this->itLastStolenVoice = itSelectedVoice; |
872 |
|
|
break; // selection succeeded |
873 |
|
|
} |
874 |
|
|
++iuiSelectedKey; // get next oldest key |
875 |
|
|
} |
876 |
schoenebeck |
250 |
break; |
877 |
|
|
} |
878 |
|
|
|
879 |
|
|
// don't steal anything |
880 |
|
|
case voice_steal_algo_none: |
881 |
|
|
default: { |
882 |
|
|
dmsg(1,("No free voice (voice stealing disabled)!\n")); |
883 |
schoenebeck |
473 |
return -1; |
884 |
schoenebeck |
250 |
} |
885 |
|
|
} |
886 |
|
|
|
887 |
schoenebeck |
563 |
// if we couldn't steal a voice from the same engine channel then |
888 |
|
|
// steal oldest voice on the oldest key from any other engine channel |
889 |
schoenebeck |
649 |
// (the smaller engine channel number, the higher priority) |
890 |
schoenebeck |
663 |
if (!itSelectedVoice || !itSelectedVoice->IsStealable()) { |
891 |
schoenebeck |
649 |
EngineChannel* pSelectedChannel; |
892 |
|
|
int iChannelIndex; |
893 |
|
|
// select engine channel |
894 |
|
|
if (pLastStolenChannel) { |
895 |
|
|
pSelectedChannel = pLastStolenChannel; |
896 |
|
|
iChannelIndex = pSelectedChannel->iEngineIndexSelf; |
897 |
|
|
} else { // pick the engine channel followed by this engine channel |
898 |
|
|
iChannelIndex = (pEngineChannel->iEngineIndexSelf + 1) % engineChannels.size(); |
899 |
|
|
pSelectedChannel = engineChannels[iChannelIndex]; |
900 |
|
|
} |
901 |
schoenebeck |
663 |
|
902 |
|
|
// if we already stole in this fragment, try to proceed on same key |
903 |
|
|
if (this->itLastStolenVoiceGlobally) { |
904 |
|
|
itSelectedVoice = this->itLastStolenVoiceGlobally; |
905 |
|
|
do { |
906 |
|
|
++itSelectedVoice; |
907 |
|
|
} while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle |
908 |
|
|
} |
909 |
|
|
|
910 |
|
|
#if CONFIG_DEVMODE |
911 |
|
|
EngineChannel* pBegin = pSelectedChannel; // to detect endless loop |
912 |
|
|
#endif // CONFIG_DEVMODE |
913 |
|
|
|
914 |
|
|
// did we find a 'stealable' voice? |
915 |
|
|
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
916 |
|
|
// remember which voice we stole, so we can simply proceed on next voice stealing |
917 |
|
|
this->itLastStolenVoiceGlobally = itSelectedVoice; |
918 |
|
|
} else while (true) { // iterate through engine channels |
919 |
schoenebeck |
649 |
// get (next) oldest key |
920 |
schoenebeck |
663 |
RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKeyGlobally) ? ++this->iuiLastStolenKeyGlobally : pSelectedChannel->pActiveKeys->first(); |
921 |
|
|
this->iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); // to prevent endless loop (see line above) |
922 |
schoenebeck |
649 |
while (iuiSelectedKey) { |
923 |
schoenebeck |
663 |
midi_key_info_t* pSelectedKey = &pSelectedChannel->pMIDIKeyInfo[*iuiSelectedKey]; |
924 |
schoenebeck |
649 |
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
925 |
|
|
// proceed iterating if voice was created in this fragment cycle |
926 |
schoenebeck |
663 |
while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice; |
927 |
schoenebeck |
649 |
// found a "stealable" voice ? |
928 |
schoenebeck |
663 |
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
929 |
schoenebeck |
649 |
// remember which voice on which key on which engine channel we stole, so we can simply proceed on next voice stealing |
930 |
|
|
this->iuiLastStolenKeyGlobally = iuiSelectedKey; |
931 |
|
|
this->itLastStolenVoiceGlobally = itSelectedVoice; |
932 |
|
|
this->pLastStolenChannel = pSelectedChannel; |
933 |
schoenebeck |
665 |
goto stealable_voice_found; // selection succeeded |
934 |
schoenebeck |
649 |
} |
935 |
|
|
++iuiSelectedKey; // get next key on current engine channel |
936 |
|
|
} |
937 |
|
|
// get next engine channel |
938 |
schoenebeck |
460 |
iChannelIndex = (iChannelIndex + 1) % engineChannels.size(); |
939 |
schoenebeck |
649 |
pSelectedChannel = engineChannels[iChannelIndex]; |
940 |
schoenebeck |
663 |
|
941 |
|
|
#if CONFIG_DEVMODE |
942 |
|
|
if (pSelectedChannel == pBegin) { |
943 |
|
|
dmsg(1,("FATAL ERROR: voice stealing endless loop!\n")); |
944 |
|
|
dmsg(1,("VoiceSpawnsLeft=%d.\n", VoiceSpawnsLeft)); |
945 |
|
|
dmsg(1,("Exiting.\n")); |
946 |
|
|
exit(-1); |
947 |
|
|
} |
948 |
|
|
#endif // CONFIG_DEVMODE |
949 |
schoenebeck |
460 |
} |
950 |
|
|
} |
951 |
|
|
|
952 |
schoenebeck |
665 |
// jump point if a 'stealable' voice was found |
953 |
|
|
stealable_voice_found: |
954 |
|
|
|
955 |
schoenebeck |
563 |
#if CONFIG_DEVMODE |
956 |
schoenebeck |
473 |
if (!itSelectedVoice->IsActive()) { |
957 |
|
|
dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n")); |
958 |
|
|
return -1; |
959 |
|
|
} |
960 |
schoenebeck |
563 |
#endif // CONFIG_DEVMODE |
961 |
schoenebeck |
287 |
|
962 |
schoenebeck |
250 |
// now kill the selected voice |
963 |
schoenebeck |
659 |
itSelectedVoice->Kill(itNoteOnEvent); |
964 |
schoenebeck |
460 |
|
965 |
schoenebeck |
663 |
--VoiceSpawnsLeft; |
966 |
schoenebeck |
473 |
|
967 |
|
|
return 0; // success |
968 |
schoenebeck |
250 |
} |
969 |
schoenebeck |
473 |
else { |
970 |
|
|
dmsg(1,("Event pool emtpy!\n")); |
971 |
|
|
return -1; |
972 |
|
|
} |
973 |
schoenebeck |
250 |
} |
974 |
|
|
|
975 |
|
|
/** |
976 |
schoenebeck |
285 |
* Removes the given voice from the MIDI key's list of active voices. |
977 |
|
|
* This method will be called when a voice went inactive, e.g. because |
978 |
|
|
* it finished to playback its sample, finished its release stage or |
979 |
|
|
* just was killed. |
980 |
schoenebeck |
53 |
* |
981 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
982 |
schoenebeck |
285 |
* @param itVoice - points to the voice to be freed |
983 |
schoenebeck |
53 |
*/ |
984 |
schoenebeck |
411 |
void Engine::FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice) { |
985 |
schoenebeck |
271 |
if (itVoice) { |
986 |
schoenebeck |
411 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoice->MIDIKey]; |
987 |
schoenebeck |
53 |
|
988 |
schoenebeck |
271 |
uint keygroup = itVoice->KeyGroup; |
989 |
|
|
|
990 |
schoenebeck |
53 |
// free the voice object |
991 |
schoenebeck |
271 |
pVoicePool->free(itVoice); |
992 |
schoenebeck |
53 |
|
993 |
schoenebeck |
287 |
// if no other voices left and member of a key group, remove from key group |
994 |
|
|
if (pKey->pActiveVoices->isEmpty() && keygroup) { |
995 |
schoenebeck |
411 |
uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[keygroup]; |
996 |
schoenebeck |
287 |
if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group |
997 |
schoenebeck |
53 |
} |
998 |
|
|
} |
999 |
schoenebeck |
285 |
else std::cerr << "Couldn't release voice! (!itVoice)\n" << std::flush; |
1000 |
schoenebeck |
53 |
} |
1001 |
|
|
|
1002 |
|
|
/** |
1003 |
schoenebeck |
287 |
* Called when there's no more voice left on a key, this call will |
1004 |
|
|
* update the key info respectively. |
1005 |
|
|
* |
1006 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
1007 |
schoenebeck |
287 |
* @param pKey - key which is now inactive |
1008 |
|
|
*/ |
1009 |
schoenebeck |
411 |
void Engine::FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey) { |
1010 |
schoenebeck |
287 |
if (pKey->pActiveVoices->isEmpty()) { |
1011 |
|
|
pKey->Active = false; |
1012 |
schoenebeck |
411 |
pEngineChannel->pActiveKeys->free(pKey->itSelf); // remove key from list of active keys |
1013 |
schoenebeck |
287 |
pKey->itSelf = RTList<uint>::Iterator(); |
1014 |
|
|
pKey->ReleaseTrigger = false; |
1015 |
|
|
pKey->pEvents->clear(); |
1016 |
|
|
dmsg(3,("Key has no more voices now\n")); |
1017 |
|
|
} |
1018 |
|
|
else dmsg(1,("gig::Engine: Oops, tried to free a key which contains voices.\n")); |
1019 |
|
|
} |
1020 |
|
|
|
1021 |
|
|
/** |
1022 |
schoenebeck |
53 |
* Reacts on supported control change commands (e.g. pitch bend wheel, |
1023 |
|
|
* modulation wheel, aftertouch). |
1024 |
|
|
* |
1025 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which this event occured on |
1026 |
schoenebeck |
271 |
* @param itControlChangeEvent - controller, value and time stamp of the event |
1027 |
schoenebeck |
53 |
*/ |
1028 |
schoenebeck |
411 |
void Engine::ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent) { |
1029 |
schoenebeck |
271 |
dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value)); |
1030 |
schoenebeck |
53 |
|
1031 |
schoenebeck |
473 |
// update controller value in the engine channel's controller table |
1032 |
|
|
pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value; |
1033 |
|
|
|
1034 |
|
|
// move event from the unsorted event list to the control change event list |
1035 |
|
|
Pool<Event>::Iterator itControlChangeEventOnCCList = itControlChangeEvent.moveToEndOf(pEngineChannel->pCCEvents); |
1036 |
|
|
|
1037 |
|
|
switch (itControlChangeEventOnCCList->Param.CC.Controller) { |
1038 |
schoenebeck |
424 |
case 7: { // volume |
1039 |
|
|
//TODO: not sample accurate yet |
1040 |
schoenebeck |
473 |
pEngineChannel->GlobalVolume = (float) itControlChangeEventOnCCList->Param.CC.Value / 127.0f; |
1041 |
schoenebeck |
660 |
pEngineChannel->bStatusChanged = true; // engine channel status has changed, so set notify flag |
1042 |
schoenebeck |
424 |
break; |
1043 |
|
|
} |
1044 |
|
|
case 10: { // panpot |
1045 |
|
|
//TODO: not sample accurate yet |
1046 |
schoenebeck |
473 |
const int pan = (int) itControlChangeEventOnCCList->Param.CC.Value - 64; |
1047 |
schoenebeck |
424 |
pEngineChannel->GlobalPanLeft = 1.0f - float(RTMath::Max(pan, 0)) / 63.0f; |
1048 |
|
|
pEngineChannel->GlobalPanRight = 1.0f - float(RTMath::Min(pan, 0)) / -64.0f; |
1049 |
|
|
break; |
1050 |
|
|
} |
1051 |
|
|
case 64: { // sustain |
1052 |
schoenebeck |
473 |
if (itControlChangeEventOnCCList->Param.CC.Value >= 64 && !pEngineChannel->SustainPedal) { |
1053 |
schoenebeck |
53 |
dmsg(4,("PEDAL DOWN\n")); |
1054 |
schoenebeck |
411 |
pEngineChannel->SustainPedal = true; |
1055 |
schoenebeck |
53 |
|
1056 |
|
|
// cancel release process of voices if necessary |
1057 |
schoenebeck |
411 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1058 |
schoenebeck |
473 |
for (; iuiKey; ++iuiKey) { |
1059 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1060 |
|
|
if (!pKey->KeyPressed) { |
1061 |
|
|
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
1062 |
|
|
if (itNewEvent) { |
1063 |
|
|
*itNewEvent = *itControlChangeEventOnCCList; // copy event to the key's own event list |
1064 |
|
|
itNewEvent->Type = Event::type_cancel_release; // transform event type |
1065 |
schoenebeck |
53 |
} |
1066 |
schoenebeck |
473 |
else dmsg(1,("Event pool emtpy!\n")); |
1067 |
schoenebeck |
53 |
} |
1068 |
|
|
} |
1069 |
|
|
} |
1070 |
schoenebeck |
473 |
if (itControlChangeEventOnCCList->Param.CC.Value < 64 && pEngineChannel->SustainPedal) { |
1071 |
schoenebeck |
53 |
dmsg(4,("PEDAL UP\n")); |
1072 |
schoenebeck |
411 |
pEngineChannel->SustainPedal = false; |
1073 |
schoenebeck |
53 |
|
1074 |
|
|
// release voices if their respective key is not pressed |
1075 |
schoenebeck |
411 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1076 |
schoenebeck |
473 |
for (; iuiKey; ++iuiKey) { |
1077 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1078 |
|
|
if (!pKey->KeyPressed) { |
1079 |
|
|
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
1080 |
|
|
if (itNewEvent) { |
1081 |
|
|
*itNewEvent = *itControlChangeEventOnCCList; // copy event to the key's own event list |
1082 |
|
|
itNewEvent->Type = Event::type_release; // transform event type |
1083 |
schoenebeck |
53 |
} |
1084 |
schoenebeck |
473 |
else dmsg(1,("Event pool emtpy!\n")); |
1085 |
schoenebeck |
53 |
} |
1086 |
|
|
} |
1087 |
|
|
} |
1088 |
|
|
break; |
1089 |
|
|
} |
1090 |
|
|
|
1091 |
|
|
|
1092 |
schoenebeck |
473 |
// Channel Mode Messages |
1093 |
|
|
|
1094 |
|
|
case 120: { // all sound off |
1095 |
|
|
KillAllVoices(pEngineChannel, itControlChangeEventOnCCList); |
1096 |
|
|
break; |
1097 |
|
|
} |
1098 |
|
|
case 121: { // reset all controllers |
1099 |
|
|
pEngineChannel->ResetControllers(); |
1100 |
|
|
break; |
1101 |
|
|
} |
1102 |
|
|
case 123: { // all notes off |
1103 |
|
|
ReleaseAllVoices(pEngineChannel, itControlChangeEventOnCCList); |
1104 |
|
|
break; |
1105 |
|
|
} |
1106 |
|
|
} |
1107 |
schoenebeck |
53 |
} |
1108 |
|
|
|
1109 |
|
|
/** |
1110 |
schoenebeck |
244 |
* Reacts on MIDI system exclusive messages. |
1111 |
|
|
* |
1112 |
schoenebeck |
271 |
* @param itSysexEvent - sysex data size and time stamp of the sysex event |
1113 |
schoenebeck |
244 |
*/ |
1114 |
schoenebeck |
271 |
void Engine::ProcessSysex(Pool<Event>::Iterator& itSysexEvent) { |
1115 |
schoenebeck |
244 |
RingBuffer<uint8_t>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader(); |
1116 |
|
|
|
1117 |
|
|
uint8_t exclusive_status, id; |
1118 |
|
|
if (!reader.pop(&exclusive_status)) goto free_sysex_data; |
1119 |
|
|
if (!reader.pop(&id)) goto free_sysex_data; |
1120 |
|
|
if (exclusive_status != 0xF0) goto free_sysex_data; |
1121 |
|
|
|
1122 |
|
|
switch (id) { |
1123 |
|
|
case 0x41: { // Roland |
1124 |
schoenebeck |
493 |
dmsg(3,("Roland Sysex\n")); |
1125 |
schoenebeck |
244 |
uint8_t device_id, model_id, cmd_id; |
1126 |
|
|
if (!reader.pop(&device_id)) goto free_sysex_data; |
1127 |
|
|
if (!reader.pop(&model_id)) goto free_sysex_data; |
1128 |
|
|
if (!reader.pop(&cmd_id)) goto free_sysex_data; |
1129 |
|
|
if (model_id != 0x42 /*GS*/) goto free_sysex_data; |
1130 |
|
|
if (cmd_id != 0x12 /*DT1*/) goto free_sysex_data; |
1131 |
|
|
|
1132 |
|
|
// command address |
1133 |
|
|
uint8_t addr[3]; // 2 byte addr MSB, followed by 1 byte addr LSB) |
1134 |
|
|
const RingBuffer<uint8_t>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later |
1135 |
|
|
if (reader.read(&addr[0], 3) != 3) goto free_sysex_data; |
1136 |
|
|
if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters |
1137 |
schoenebeck |
493 |
dmsg(3,("\tSystem Parameter\n")); |
1138 |
schoenebeck |
244 |
} |
1139 |
|
|
else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters |
1140 |
schoenebeck |
493 |
dmsg(3,("\tCommon Parameter\n")); |
1141 |
schoenebeck |
244 |
} |
1142 |
|
|
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1) |
1143 |
schoenebeck |
493 |
dmsg(3,("\tPart Parameter\n")); |
1144 |
|
|
switch (addr[2]) { |
1145 |
schoenebeck |
244 |
case 0x40: { // scale tuning |
1146 |
schoenebeck |
493 |
dmsg(3,("\t\tScale Tuning\n")); |
1147 |
schoenebeck |
244 |
uint8_t scale_tunes[12]; // detuning of all 12 semitones of an octave |
1148 |
|
|
if (reader.read(&scale_tunes[0], 12) != 12) goto free_sysex_data; |
1149 |
|
|
uint8_t checksum; |
1150 |
schoenebeck |
493 |
if (!reader.pop(&checksum)) goto free_sysex_data; |
1151 |
schoenebeck |
563 |
#if CONFIG_ASSERT_GS_SYSEX_CHECKSUM |
1152 |
|
|
if (GSCheckSum(checksum_reader, 12)) goto free_sysex_data; |
1153 |
|
|
#endif // CONFIG_ASSERT_GS_SYSEX_CHECKSUM |
1154 |
schoenebeck |
244 |
for (int i = 0; i < 12; i++) scale_tunes[i] -= 64; |
1155 |
|
|
AdjustScale((int8_t*) scale_tunes); |
1156 |
schoenebeck |
493 |
dmsg(3,("\t\t\tNew scale applied.\n")); |
1157 |
schoenebeck |
244 |
break; |
1158 |
|
|
} |
1159 |
|
|
} |
1160 |
|
|
} |
1161 |
|
|
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2) |
1162 |
|
|
} |
1163 |
|
|
else if (addr[0] == 0x41) { // Drum Setup Parameters |
1164 |
|
|
} |
1165 |
|
|
break; |
1166 |
|
|
} |
1167 |
|
|
} |
1168 |
|
|
|
1169 |
|
|
free_sysex_data: // finally free sysex data |
1170 |
schoenebeck |
271 |
pSysexBuffer->increment_read_ptr(itSysexEvent->Param.Sysex.Size); |
1171 |
schoenebeck |
244 |
} |
1172 |
|
|
|
1173 |
|
|
/** |
1174 |
|
|
* Calculates the Roland GS sysex check sum. |
1175 |
|
|
* |
1176 |
|
|
* @param AddrReader - reader which currently points to the first GS |
1177 |
|
|
* command address byte of the GS sysex message in |
1178 |
|
|
* question |
1179 |
|
|
* @param DataSize - size of the GS message data (in bytes) |
1180 |
|
|
*/ |
1181 |
|
|
uint8_t Engine::GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize) { |
1182 |
|
|
RingBuffer<uint8_t>::NonVolatileReader reader = AddrReader; |
1183 |
|
|
uint bytes = 3 /*addr*/ + DataSize; |
1184 |
|
|
uint8_t addr_and_data[bytes]; |
1185 |
|
|
reader.read(&addr_and_data[0], bytes); |
1186 |
|
|
uint8_t sum = 0; |
1187 |
|
|
for (uint i = 0; i < bytes; i++) sum += addr_and_data[i]; |
1188 |
|
|
return 128 - sum % 128; |
1189 |
|
|
} |
1190 |
|
|
|
1191 |
|
|
/** |
1192 |
|
|
* Allows to tune each of the twelve semitones of an octave. |
1193 |
|
|
* |
1194 |
|
|
* @param ScaleTunes - detuning of all twelve semitones (in cents) |
1195 |
|
|
*/ |
1196 |
|
|
void Engine::AdjustScale(int8_t ScaleTunes[12]) { |
1197 |
|
|
memcpy(&this->ScaleTuning[0], &ScaleTunes[0], 12); //TODO: currently not sample accurate |
1198 |
|
|
} |
1199 |
|
|
|
1200 |
|
|
/** |
1201 |
schoenebeck |
473 |
* Releases all voices on an engine channel. All voices will go into |
1202 |
|
|
* the release stage and thus it might take some time (e.g. dependant to |
1203 |
|
|
* their envelope release time) until they actually die. |
1204 |
|
|
* |
1205 |
|
|
* @param pEngineChannel - engine channel on which all voices should be released |
1206 |
|
|
* @param itReleaseEvent - event which caused this releasing of all voices |
1207 |
|
|
*/ |
1208 |
|
|
void Engine::ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent) { |
1209 |
|
|
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1210 |
|
|
while (iuiKey) { |
1211 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1212 |
|
|
++iuiKey; |
1213 |
|
|
// append a 'release' event to the key's own event list |
1214 |
|
|
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
1215 |
|
|
if (itNewEvent) { |
1216 |
|
|
*itNewEvent = *itReleaseEvent; // copy original event (to the key's event list) |
1217 |
|
|
itNewEvent->Type = Event::type_release; // transform event type |
1218 |
|
|
} |
1219 |
|
|
else dmsg(1,("Event pool emtpy!\n")); |
1220 |
|
|
} |
1221 |
|
|
} |
1222 |
|
|
|
1223 |
|
|
/** |
1224 |
|
|
* Kills all voices on an engine channel as soon as possible. Voices |
1225 |
|
|
* won't get into release state, their volume level will be ramped down |
1226 |
|
|
* as fast as possible. |
1227 |
|
|
* |
1228 |
|
|
* @param pEngineChannel - engine channel on which all voices should be killed |
1229 |
|
|
* @param itKillEvent - event which caused this killing of all voices |
1230 |
|
|
*/ |
1231 |
|
|
void Engine::KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent) { |
1232 |
|
|
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1233 |
|
|
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
1234 |
|
|
while (iuiKey != end) { // iterate through all active keys |
1235 |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1236 |
|
|
++iuiKey; |
1237 |
|
|
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
1238 |
|
|
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
1239 |
|
|
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
1240 |
|
|
itVoice->Kill(itKillEvent); |
1241 |
schoenebeck |
663 |
--VoiceSpawnsLeft; //FIXME: just a temporary workaround, we should check the cause in StealVoice() instead |
1242 |
schoenebeck |
473 |
} |
1243 |
|
|
} |
1244 |
|
|
} |
1245 |
|
|
|
1246 |
|
|
/** |
1247 |
schoenebeck |
53 |
* Initialize the parameter sequence for the modulation destination given by |
1248 |
|
|
* by 'dst' with the constant value given by val. |
1249 |
|
|
*/ |
1250 |
|
|
void Engine::ResetSynthesisParameters(Event::destination_t dst, float val) { |
1251 |
|
|
int maxsamples = pAudioOutputDevice->MaxSamplesPerCycle(); |
1252 |
schoenebeck |
80 |
float* m = &pSynthesisParameters[dst][0]; |
1253 |
|
|
for (int i = 0; i < maxsamples; i += 4) { |
1254 |
|
|
m[i] = val; |
1255 |
|
|
m[i+1] = val; |
1256 |
|
|
m[i+2] = val; |
1257 |
|
|
m[i+3] = val; |
1258 |
|
|
} |
1259 |
persson |
438 |
} |
1260 |
schoenebeck |
53 |
|
1261 |
|
|
uint Engine::VoiceCount() { |
1262 |
|
|
return ActiveVoiceCount; |
1263 |
|
|
} |
1264 |
|
|
|
1265 |
|
|
uint Engine::VoiceCountMax() { |
1266 |
|
|
return ActiveVoiceCountMax; |
1267 |
|
|
} |
1268 |
|
|
|
1269 |
|
|
bool Engine::DiskStreamSupported() { |
1270 |
|
|
return true; |
1271 |
|
|
} |
1272 |
|
|
|
1273 |
|
|
uint Engine::DiskStreamCount() { |
1274 |
|
|
return (pDiskThread) ? pDiskThread->ActiveStreamCount : 0; |
1275 |
|
|
} |
1276 |
|
|
|
1277 |
|
|
uint Engine::DiskStreamCountMax() { |
1278 |
|
|
return (pDiskThread) ? pDiskThread->ActiveStreamCountMax : 0; |
1279 |
|
|
} |
1280 |
|
|
|
1281 |
|
|
String Engine::DiskStreamBufferFillBytes() { |
1282 |
|
|
return pDiskThread->GetBufferFillBytes(); |
1283 |
|
|
} |
1284 |
|
|
|
1285 |
|
|
String Engine::DiskStreamBufferFillPercentage() { |
1286 |
|
|
return pDiskThread->GetBufferFillPercentage(); |
1287 |
|
|
} |
1288 |
|
|
|
1289 |
senkov |
112 |
String Engine::EngineName() { |
1290 |
schoenebeck |
475 |
return LS_GIG_ENGINE_NAME; |
1291 |
senkov |
112 |
} |
1292 |
|
|
|
1293 |
schoenebeck |
53 |
String Engine::Description() { |
1294 |
|
|
return "Gigasampler Engine"; |
1295 |
|
|
} |
1296 |
|
|
|
1297 |
|
|
String Engine::Version() { |
1298 |
schoenebeck |
668 |
String s = "$Revision: 1.46 $"; |
1299 |
schoenebeck |
123 |
return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
1300 |
schoenebeck |
53 |
} |
1301 |
|
|
|
1302 |
|
|
}} // namespace LinuxSampler::gig |