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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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|
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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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|
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#include "Engine.h" |
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|
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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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|
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namespace LinuxSampler { namespace gig { |
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|
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InstrumentResourceManager Engine::instruments; |
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|
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std::map<AudioOutputDevice*,Engine*> Engine::engines; |
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|
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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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/** |
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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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/** |
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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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|
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pSynthesisParameters[0] = NULL; // we allocate when an audio device is connected |
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pBasicFilterParameters = NULL; |
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pMainFilterParameters = NULL; |
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|
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ResetInternal(); |
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} |
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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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|
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void Engine::Enable() { |
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dmsg(3,("gig::Engine: enabling\n")); |
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EngineDisabled.PushAndUnlock(false, 2); // set condition object 'EngineDisabled' to false (wait max. 2s) |
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dmsg(3,("gig::Engine: enabled (val=%d)\n", EngineDisabled.GetUnsafe())); |
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} |
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|
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void Engine::Disable() { |
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dmsg(3,("gig::Engine: disabling\n")); |
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bool* pWasDisabled = EngineDisabled.PushAndUnlock(true, 2); // wait max. 2s |
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if (!pWasDisabled) dmsg(3,("gig::Engine warning: Timeout waiting to disable engine.\n")); |
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} |
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|
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void Engine::DisableAndLock() { |
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dmsg(3,("gig::Engine: disabling\n")); |
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bool* pWasDisabled = EngineDisabled.Push(true, 2); // wait max. 2s |
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if (!pWasDisabled) dmsg(3,("gig::Engine warning: Timeout waiting to disable engine.\n")); |
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} |
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|
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/** |
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* Reset all voices and disk thread and clear input event queue and all |
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* control and status variables. |
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*/ |
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void Engine::Reset() { |
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DisableAndLock(); |
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ResetInternal(); |
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Enable(); |
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} |
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|
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/** |
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* Reset all voices and disk thread and clear input event queue and all |
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* control and status variables. This method is not thread safe! |
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*/ |
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void Engine::ResetInternal() { |
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ActiveVoiceCount = 0; |
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ActiveVoiceCountMax = 0; |
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|
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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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|
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// reset to normal chromatic scale (means equal temper) |
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memset(&ScaleTuning[0], 0x00, 12); |
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|
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// 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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|
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// reset disk thread |
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if (pDiskThread) pDiskThread->Reset(); |
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|
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// delete all input events |
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pEventQueue->init(); |
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} |
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|
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/** |
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* 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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|
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ResetInternal(); |
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|
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// inform audio driver for the need of two channels |
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try { |
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pAudioOutputDevice->AcquireChannels(2); // gig engine only stereo |
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} |
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catch (AudioOutputException e) { |
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String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message(); |
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throw LinuxSamplerException(msg); |
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} |
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|
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this->MaxSamplesPerCycle = pAudioOutputDevice->MaxSamplesPerCycle(); |
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this->SampleRate = pAudioOutputDevice->SampleRate(); |
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|
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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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|
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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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|
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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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|
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// (re)create event generator |
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if (pEventGenerator) delete pEventGenerator; |
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pEventGenerator = new EventGenerator(pAudioOut->SampleRate()); |
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|
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// (re)allocate synthesis parameter matrix |
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if (pSynthesisParameters[0]) free(pSynthesisParameters[0]); |
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|
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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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|
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// (re)allocate biquad filter parameter sequence |
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if (pBasicFilterParameters) delete[] pBasicFilterParameters; |
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if (pMainFilterParameters) delete[] pMainFilterParameters; |
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pBasicFilterParameters = new biquad_param_t[pAudioOut->MaxSamplesPerCycle()]; |
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pMainFilterParameters = new biquad_param_t[pAudioOut->MaxSamplesPerCycle()]; |
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|
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dmsg(1,("Starting disk thread...")); |
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pDiskThread->StartThread(); |
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dmsg(1,("OK\n")); |
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|
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for (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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/** |
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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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/** |
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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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/** |
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* Let this engine proceed to render the given amount of sample points. The |
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* calculated audio data of all voices of this engine will be placed into |
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* the engine's audio sum buffer which has to be copied and eventually be |
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* converted to the appropriate value range by the audio output class (e.g. |
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* AlsaIO or JackIO) right after. |
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* |
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* @param Samples - number of sample points to be rendered |
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* @returns 0 on success |
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*/ |
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int Engine::RenderAudio(uint Samples) { |
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dmsg(5,("RenderAudio(Samples=%d)\n", Samples)); |
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|
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// return if engine disabled |
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if (EngineDisabled.Pop()) { |
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dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe())); |
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return 0; |
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} |
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|
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// update time of start and end of this audio fragment (as events' time stamps relate to this) |
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pEventGenerator->UpdateFragmentTime(Samples); |
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|
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// get all events from the engine's global input event queue which belong to the current fragment |
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// (these are usually just SysEx messages) |
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ImportEvents(Samples); |
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|
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// process engine global events (these are currently only MIDI System Exclusive messages) |
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{ |
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RTList<Event>::Iterator itEvent = pGlobalEvents->first(); |
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RTList<Event>::Iterator end = pGlobalEvents->end(); |
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for (; itEvent != end; ++itEvent) { |
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switch (itEvent->Type) { |
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case Event::type_sysex: |
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dmsg(5,("Engine: Sysex received\n")); |
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ProcessSysex(itEvent); |
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break; |
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} |
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} |
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} |
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|
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// We only allow a maximum of CONFIG_MAX_VOICES voices to be stolen |
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// in each audio fragment. All subsequent request for spawning new |
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// voices in the same audio fragment will be ignored. |
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VoiceTheftsLeft = CONFIG_MAX_VOICES; |
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|
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// reset internal voice counter (just for statistic of active voices) |
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ActiveVoiceCountTemp = 0; |
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|
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|
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// handle events on all engine channels |
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for (int i = 0; i < engineChannels.size(); i++) { |
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if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded |
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ProcessEvents(engineChannels[i], Samples); |
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} |
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|
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// render all 'normal', active voices on all engine channels |
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for (int i = 0; i < engineChannels.size(); i++) { |
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if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded |
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RenderActiveVoices(engineChannels[i], Samples); |
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} |
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|
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// now that all ordinary voices on ALL engine channels are rendered, render new stolen voices |
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RenderStolenVoices(Samples); |
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|
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// handle cleanup on all engine channels for the next audio fragment |
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for (int i = 0; i < engineChannels.size(); i++) { |
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if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded |
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PostProcess(engineChannels[i]); |
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} |
404 |
|
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|
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// empty the engine's event list for the next audio fragment |
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ClearEventLists(); |
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|
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// reset voice stealing for the next audio fragment |
410 |
pVoiceStealingQueue->clear(); |
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|
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// just some statistics about this engine instance |
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ActiveVoiceCount = ActiveVoiceCountTemp; |
414 |
if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount; |
415 |
|
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FrameTime += Samples; |
417 |
|
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return 0; |
419 |
} |
420 |
|
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/** |
422 |
* Dispatch and handle all events in this audio fragment for the given |
423 |
* engine channel. |
424 |
* |
425 |
* @param pEngineChannel - engine channel on which events should be |
426 |
* processed |
427 |
* @param Samples - amount of sample points to be processed in |
428 |
* this audio fragment cycle |
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*/ |
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void Engine::ProcessEvents(EngineChannel* pEngineChannel, uint Samples) { |
431 |
// get all events from the engine channels's input event queue which belong to the current fragment |
432 |
// (these are the common events like NoteOn, NoteOff, ControlChange, etc.) |
433 |
pEngineChannel->ImportEvents(Samples); |
434 |
|
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// process events |
436 |
{ |
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RTList<Event>::Iterator itEvent = pEngineChannel->pEvents->first(); |
438 |
RTList<Event>::Iterator end = pEngineChannel->pEvents->end(); |
439 |
for (; itEvent != end; ++itEvent) { |
440 |
switch (itEvent->Type) { |
441 |
case Event::type_note_on: |
442 |
dmsg(5,("Engine: Note on received\n")); |
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ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent); |
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break; |
445 |
case Event::type_note_off: |
446 |
dmsg(5,("Engine: Note off received\n")); |
447 |
ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent); |
448 |
break; |
449 |
case Event::type_control_change: |
450 |
dmsg(5,("Engine: MIDI CC received\n")); |
451 |
ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent); |
452 |
break; |
453 |
case Event::type_pitchbend: |
454 |
dmsg(5,("Engine: Pitchbend received\n")); |
455 |
ProcessPitchbend((EngineChannel*)itEvent->pEngineChannel, itEvent); |
456 |
break; |
457 |
} |
458 |
} |
459 |
} |
460 |
|
461 |
// reset voice stealing for the next engine channel (or next audio fragment) |
462 |
itLastStolenVoice = RTList<Voice>::Iterator(); |
463 |
itLastStolenVoiceGlobally = RTList<Voice>::Iterator(); |
464 |
iuiLastStolenKey = RTList<uint>::Iterator(); |
465 |
iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); |
466 |
pLastStolenChannel = NULL; |
467 |
} |
468 |
|
469 |
/** |
470 |
* Render all 'normal' voices (that is voices which were not stolen in |
471 |
* this fragment) on the given engine channel. |
472 |
* |
473 |
* @param pEngineChannel - engine channel on which audio should be |
474 |
* rendered |
475 |
* @param Samples - amount of sample points to be rendered in |
476 |
* this audio fragment cycle |
477 |
*/ |
478 |
void Engine::RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples) { |
479 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
480 |
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
481 |
while (iuiKey != end) { // iterate through all active keys |
482 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
483 |
++iuiKey; |
484 |
|
485 |
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
486 |
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
487 |
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
488 |
// now render current voice |
489 |
itVoice->Render(Samples); |
490 |
if (itVoice->IsActive()) ActiveVoiceCountTemp++; // still active |
491 |
else { // voice reached end, is now inactive |
492 |
FreeVoice(pEngineChannel, itVoice); // remove voice from the list of active voices |
493 |
} |
494 |
} |
495 |
} |
496 |
} |
497 |
|
498 |
/** |
499 |
* Render all stolen voices (only voices which were stolen in this |
500 |
* fragment) on the given engine channel. Stolen voices are rendered |
501 |
* after all normal voices have been rendered; this is needed to render |
502 |
* audio of those voices which were selected for voice stealing until |
503 |
* the point were the stealing (that is the take over of the voice) |
504 |
* actually happened. |
505 |
* |
506 |
* @param pEngineChannel - engine channel on which audio should be |
507 |
* rendered |
508 |
* @param Samples - amount of sample points to be rendered in |
509 |
* this audio fragment cycle |
510 |
*/ |
511 |
void Engine::RenderStolenVoices(uint Samples) { |
512 |
RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first(); |
513 |
RTList<Event>::Iterator end = pVoiceStealingQueue->end(); |
514 |
for (; itVoiceStealEvent != end; ++itVoiceStealEvent) { |
515 |
EngineChannel* pEngineChannel = (EngineChannel*) itVoiceStealEvent->pEngineChannel; |
516 |
Pool<Voice>::Iterator itNewVoice = |
517 |
LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false); |
518 |
if (itNewVoice) { |
519 |
itNewVoice->Render(Samples); |
520 |
if (itNewVoice->IsActive()) ActiveVoiceCountTemp++; // still active |
521 |
else { // voice reached end, is now inactive |
522 |
FreeVoice(pEngineChannel, itNewVoice); // remove voice from the list of active voices |
523 |
} |
524 |
} |
525 |
else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n")); |
526 |
|
527 |
// we need to clear the key's event list explicitly here in case key was never active |
528 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoiceStealEvent->Param.Note.Key]; |
529 |
pKey->VoiceTheftsQueued--; |
530 |
if (!pKey->Active && !pKey->VoiceTheftsQueued) pKey->pEvents->clear(); |
531 |
} |
532 |
} |
533 |
|
534 |
/** |
535 |
* Free all keys which have turned inactive in this audio fragment, from |
536 |
* the list of active keys and clear all event lists on that engine |
537 |
* channel. |
538 |
* |
539 |
* @param pEngineChannel - engine channel to cleanup |
540 |
*/ |
541 |
void Engine::PostProcess(EngineChannel* pEngineChannel) { |
542 |
// free all keys which have no active voices left |
543 |
{ |
544 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
545 |
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
546 |
while (iuiKey != end) { // iterate through all active keys |
547 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
548 |
++iuiKey; |
549 |
if (pKey->pActiveVoices->isEmpty()) FreeKey(pEngineChannel, pKey); |
550 |
#if CONFIG_DEVMODE |
551 |
else { // just a sanity check for debugging |
552 |
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
553 |
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
554 |
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
555 |
if (itVoice->itKillEvent) { |
556 |
dmsg(1,("gig::Engine: ERROR, killed voice survived !!!\n")); |
557 |
} |
558 |
} |
559 |
} |
560 |
#endif // CONFIG_DEVMODE |
561 |
} |
562 |
} |
563 |
|
564 |
// empty the engine channel's own event lists |
565 |
pEngineChannel->ClearEventLists(); |
566 |
} |
567 |
|
568 |
/** |
569 |
* Will be called by the MIDI input device whenever a MIDI system |
570 |
* exclusive message has arrived. |
571 |
* |
572 |
* @param pData - pointer to sysex data |
573 |
* @param Size - lenght of sysex data (in bytes) |
574 |
*/ |
575 |
void Engine::SendSysex(void* pData, uint Size) { |
576 |
Event event = pEventGenerator->CreateEvent(); |
577 |
event.Type = Event::type_sysex; |
578 |
event.Param.Sysex.Size = Size; |
579 |
event.pEngineChannel = NULL; // as Engine global event |
580 |
if (pEventQueue->write_space() > 0) { |
581 |
if (pSysexBuffer->write_space() >= Size) { |
582 |
// copy sysex data to input buffer |
583 |
uint toWrite = Size; |
584 |
uint8_t* pPos = (uint8_t*) pData; |
585 |
while (toWrite) { |
586 |
const uint writeNow = RTMath::Min(toWrite, pSysexBuffer->write_space_to_end()); |
587 |
pSysexBuffer->write(pPos, writeNow); |
588 |
toWrite -= writeNow; |
589 |
pPos += writeNow; |
590 |
|
591 |
} |
592 |
// finally place sysex event into input event queue |
593 |
pEventQueue->push(&event); |
594 |
} |
595 |
else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,CONFIG_SYSEX_BUFFER_SIZE)); |
596 |
} |
597 |
else dmsg(1,("Engine: Input event queue full!")); |
598 |
} |
599 |
|
600 |
/** |
601 |
* Assigns and triggers a new voice for the respective MIDI key. |
602 |
* |
603 |
* @param pEngineChannel - engine channel on which this event occured on |
604 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
605 |
*/ |
606 |
void Engine::ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) { |
607 |
|
608 |
const int key = itNoteOnEvent->Param.Note.Key; |
609 |
|
610 |
// Change key dimension value if key is in keyswitching area |
611 |
{ |
612 |
const ::gig::Instrument* pInstrument = pEngineChannel->pInstrument; |
613 |
if (key >= pInstrument->DimensionKeyRange.low && key <= pInstrument->DimensionKeyRange.high) |
614 |
pEngineChannel->CurrentKeyDimension = ((key - pInstrument->DimensionKeyRange.low) * 128) / |
615 |
(pInstrument->DimensionKeyRange.high - pInstrument->DimensionKeyRange.low + 1); |
616 |
} |
617 |
|
618 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[key]; |
619 |
|
620 |
pKey->KeyPressed = true; // the MIDI key was now pressed down |
621 |
pKey->Velocity = itNoteOnEvent->Param.Note.Velocity; |
622 |
pKey->NoteOnTime = FrameTime + itNoteOnEvent->FragmentPos(); // will be used to calculate note length |
623 |
|
624 |
// cancel release process of voices on this key if needed |
625 |
if (pKey->Active && !pEngineChannel->SustainPedal) { |
626 |
RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend(); |
627 |
if (itCancelReleaseEvent) { |
628 |
*itCancelReleaseEvent = *itNoteOnEvent; // copy event |
629 |
itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type |
630 |
} |
631 |
else dmsg(1,("Event pool emtpy!\n")); |
632 |
} |
633 |
|
634 |
// move note on event to the key's own event list |
635 |
RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents); |
636 |
|
637 |
// allocate and trigger new voice(s) for the key |
638 |
{ |
639 |
// first, get total amount of required voices (dependant on amount of layers) |
640 |
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOnEventOnKeyList->Param.Note.Key); |
641 |
if (pRegion) { |
642 |
int voicesRequired = pRegion->Layers; |
643 |
// now launch the required amount of voices |
644 |
for (int i = 0; i < voicesRequired; i++) |
645 |
LaunchVoice(pEngineChannel, itNoteOnEventOnKeyList, i, false, true); |
646 |
} |
647 |
} |
648 |
|
649 |
// if neither a voice was spawned or postponed then remove note on event from key again |
650 |
if (!pKey->Active && !pKey->VoiceTheftsQueued) |
651 |
pKey->pEvents->free(itNoteOnEventOnKeyList); |
652 |
|
653 |
pKey->RoundRobinIndex++; |
654 |
} |
655 |
|
656 |
/** |
657 |
* Releases the voices on the given key if sustain pedal is not pressed. |
658 |
* If sustain is pressed, the release of the note will be postponed until |
659 |
* sustain pedal will be released or voice turned inactive by itself (e.g. |
660 |
* due to completion of sample playback). |
661 |
* |
662 |
* @param pEngineChannel - engine channel on which this event occured on |
663 |
* @param itNoteOffEvent - key, velocity and time stamp of the event |
664 |
*/ |
665 |
void Engine::ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) { |
666 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key]; |
667 |
|
668 |
pKey->KeyPressed = false; // the MIDI key was now released |
669 |
|
670 |
// release voices on this key if needed |
671 |
if (pKey->Active && !pEngineChannel->SustainPedal) { |
672 |
itNoteOffEvent->Type = Event::type_release; // transform event type |
673 |
|
674 |
// move event to the key's own event list |
675 |
RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents); |
676 |
|
677 |
// spawn release triggered voice(s) if needed |
678 |
if (pKey->ReleaseTrigger) { |
679 |
// first, get total amount of required voices (dependant on amount of layers) |
680 |
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOffEventOnKeyList->Param.Note.Key); |
681 |
if (pRegion) { |
682 |
int voicesRequired = pRegion->Layers; |
683 |
|
684 |
// MIDI note-on velocity is used instead of note-off velocity |
685 |
itNoteOffEventOnKeyList->Param.Note.Velocity = pKey->Velocity; |
686 |
|
687 |
// now launch the required amount of voices |
688 |
for (int i = 0; i < voicesRequired; i++) |
689 |
LaunchVoice(pEngineChannel, itNoteOffEventOnKeyList, i, true, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples |
690 |
} |
691 |
pKey->ReleaseTrigger = false; |
692 |
} |
693 |
|
694 |
// if neither a voice was spawned or postponed then remove note off event from key again |
695 |
if (!pKey->Active && !pKey->VoiceTheftsQueued) |
696 |
pKey->pEvents->free(itNoteOffEventOnKeyList); |
697 |
} |
698 |
} |
699 |
|
700 |
/** |
701 |
* Moves pitchbend event from the general (input) event list to the pitch |
702 |
* event list. |
703 |
* |
704 |
* @param pEngineChannel - engine channel on which this event occured on |
705 |
* @param itPitchbendEvent - absolute pitch value and time stamp of the event |
706 |
*/ |
707 |
void Engine::ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent) { |
708 |
pEngineChannel->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value |
709 |
itPitchbendEvent.moveToEndOf(pEngineChannel->pSynthesisEvents[Event::destination_vco]); |
710 |
} |
711 |
|
712 |
/** |
713 |
* Allocates and triggers a new voice. This method will usually be |
714 |
* called by the ProcessNoteOn() method and by the voices itself |
715 |
* (e.g. to spawn further voices on the same key for layered sounds). |
716 |
* |
717 |
* @param pEngineChannel - engine channel on which this event occured on |
718 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
719 |
* @param iLayer - layer index for the new voice (optional - only |
720 |
* in case of layered sounds of course) |
721 |
* @param ReleaseTriggerVoice - if new voice is a release triggered voice |
722 |
* (optional, default = false) |
723 |
* @param VoiceStealing - if voice stealing should be performed |
724 |
* when there is no free voice |
725 |
* (optional, default = true) |
726 |
* @returns pointer to new voice or NULL if there was no free voice or |
727 |
* if the voice wasn't triggered (for example when no region is |
728 |
* defined for the given key). |
729 |
*/ |
730 |
Pool<Voice>::Iterator Engine::LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing) { |
731 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key]; |
732 |
|
733 |
// allocate a new voice for the key |
734 |
Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend(); |
735 |
if (itNewVoice) { |
736 |
// launch the new voice |
737 |
if (itNewVoice->Trigger(pEngineChannel, itNoteOnEvent, pEngineChannel->Pitch, pEngineChannel->pInstrument, iLayer, ReleaseTriggerVoice, VoiceStealing) < 0) { |
738 |
dmsg(4,("Voice not triggered\n")); |
739 |
pKey->pActiveVoices->free(itNewVoice); |
740 |
} |
741 |
else { // on success |
742 |
uint** ppKeyGroup = NULL; |
743 |
if (itNewVoice->KeyGroup) { // if this voice / key belongs to a key group |
744 |
ppKeyGroup = &pEngineChannel->ActiveKeyGroups[itNewVoice->KeyGroup]; |
745 |
if (*ppKeyGroup) { // if there's already an active key in that key group |
746 |
midi_key_info_t* pOtherKey = &pEngineChannel->pMIDIKeyInfo[**ppKeyGroup]; |
747 |
// kill all voices on the (other) key |
748 |
RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first(); |
749 |
RTList<Voice>::Iterator end = pOtherKey->pActiveVoices->end(); |
750 |
for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) { |
751 |
if (itVoiceToBeKilled->Type != Voice::type_release_trigger) itVoiceToBeKilled->Kill(itNoteOnEvent); |
752 |
} |
753 |
} |
754 |
} |
755 |
if (!pKey->Active) { // mark as active key |
756 |
pKey->Active = true; |
757 |
pKey->itSelf = pEngineChannel->pActiveKeys->allocAppend(); |
758 |
*pKey->itSelf = itNoteOnEvent->Param.Note.Key; |
759 |
} |
760 |
if (itNewVoice->KeyGroup) { |
761 |
*ppKeyGroup = &*pKey->itSelf; // put key as the (new) active key to its key group |
762 |
} |
763 |
if (itNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s) |
764 |
return itNewVoice; // success |
765 |
} |
766 |
} |
767 |
else if (VoiceStealing) { |
768 |
// try to steal one voice |
769 |
int result = StealVoice(pEngineChannel, itNoteOnEvent); |
770 |
if (!result) { // voice stolen successfully |
771 |
// put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died |
772 |
RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend(); |
773 |
if (itStealEvent) { |
774 |
*itStealEvent = *itNoteOnEvent; // copy event |
775 |
itStealEvent->Param.Note.Layer = iLayer; |
776 |
itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice; |
777 |
pKey->VoiceTheftsQueued++; |
778 |
} |
779 |
else dmsg(1,("Voice stealing queue full!\n")); |
780 |
} |
781 |
} |
782 |
|
783 |
return Pool<Voice>::Iterator(); // no free voice or error |
784 |
} |
785 |
|
786 |
/** |
787 |
* Will be called by LaunchVoice() method in case there are no free |
788 |
* voices left. This method will select and kill one old voice for |
789 |
* voice stealing and postpone the note-on event until the selected |
790 |
* voice actually died. |
791 |
* |
792 |
* @param pEngineChannel - engine channel on which this event occured on |
793 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
794 |
* @returns 0 on success, a value < 0 if no active voice could be picked for voice stealing |
795 |
*/ |
796 |
int Engine::StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) { |
797 |
if (!VoiceTheftsLeft) { |
798 |
dmsg(1,("Max. voice thefts per audio fragment reached (you may raise CONFIG_MAX_VOICES).\n")); |
799 |
return -1; |
800 |
} |
801 |
if (!pEventPool->poolIsEmpty()) { |
802 |
|
803 |
RTList<Voice>::Iterator itSelectedVoice; |
804 |
|
805 |
// Select one voice for voice stealing |
806 |
switch (CONFIG_VOICE_STEAL_ALGO) { |
807 |
|
808 |
// try to pick the oldest voice on the key where the new |
809 |
// voice should be spawned, if there is no voice on that |
810 |
// key, or no voice left to kill, then procceed with |
811 |
// 'oldestkey' algorithm |
812 |
case voice_steal_algo_oldestvoiceonkey: { |
813 |
midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key]; |
814 |
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
815 |
// proceed iterating if voice was created in this fragment cycle |
816 |
while (itSelectedVoice && !itSelectedVoice->hasRendered()) ++itSelectedVoice; |
817 |
// if we haven't found a voice then proceed with algorithm 'oldestkey' |
818 |
if (itSelectedVoice && itSelectedVoice->hasRendered()) break; |
819 |
} // no break - intentional ! |
820 |
|
821 |
// try to pick the oldest voice on the oldest active key |
822 |
// from the same engine channel |
823 |
// (caution: must stay after 'oldestvoiceonkey' algorithm !) |
824 |
case voice_steal_algo_oldestkey: { |
825 |
// if we already stole in this fragment, try to proceed on same key |
826 |
if (this->itLastStolenVoice) { |
827 |
itSelectedVoice = this->itLastStolenVoice; |
828 |
do { |
829 |
++itSelectedVoice; |
830 |
} while (itSelectedVoice && !itSelectedVoice->hasRendered()); // proceed iterating if voice was created in this fragment cycle |
831 |
// found a "stealable" voice ? |
832 |
if (itSelectedVoice && itSelectedVoice->hasRendered()) { |
833 |
// remember which voice we stole, so we can simply proceed on next voice stealing |
834 |
this->itLastStolenVoice = itSelectedVoice; |
835 |
break; // selection succeeded |
836 |
} |
837 |
} |
838 |
// get (next) oldest key |
839 |
RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKey) ? ++this->iuiLastStolenKey : pEngineChannel->pActiveKeys->first(); |
840 |
while (iuiSelectedKey) { |
841 |
midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey]; |
842 |
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
843 |
// proceed iterating if voice was created in this fragment cycle |
844 |
while (itSelectedVoice && !itSelectedVoice->hasRendered()) ++itSelectedVoice; |
845 |
// found a "stealable" voice ? |
846 |
if (itSelectedVoice && itSelectedVoice->hasRendered()) { |
847 |
// remember which voice on which key we stole, so we can simply proceed on next voice stealing |
848 |
this->iuiLastStolenKey = iuiSelectedKey; |
849 |
this->itLastStolenVoice = itSelectedVoice; |
850 |
break; // selection succeeded |
851 |
} |
852 |
++iuiSelectedKey; // get next oldest key |
853 |
} |
854 |
break; |
855 |
} |
856 |
|
857 |
// don't steal anything |
858 |
case voice_steal_algo_none: |
859 |
default: { |
860 |
dmsg(1,("No free voice (voice stealing disabled)!\n")); |
861 |
return -1; |
862 |
} |
863 |
} |
864 |
|
865 |
// if we couldn't steal a voice from the same engine channel then |
866 |
// steal oldest voice on the oldest key from any other engine channel |
867 |
// (the smaller engine channel number, the higher priority) |
868 |
if (!itSelectedVoice || !itSelectedVoice->hasRendered()) { |
869 |
EngineChannel* pSelectedChannel; |
870 |
int iChannelIndex; |
871 |
// select engine channel |
872 |
if (pLastStolenChannel) { |
873 |
pSelectedChannel = pLastStolenChannel; |
874 |
iChannelIndex = pSelectedChannel->iEngineIndexSelf; |
875 |
} else { // pick the engine channel followed by this engine channel |
876 |
iChannelIndex = (pEngineChannel->iEngineIndexSelf + 1) % engineChannels.size(); |
877 |
pSelectedChannel = engineChannels[iChannelIndex]; |
878 |
} |
879 |
// iterate through engine channels |
880 |
while (true) { |
881 |
// if we already stole in this fragment, try to proceed on same key |
882 |
if (this->itLastStolenVoiceGlobally) { |
883 |
itSelectedVoice = this->itLastStolenVoiceGlobally; |
884 |
do { |
885 |
++itSelectedVoice; |
886 |
} while (itSelectedVoice && !itSelectedVoice->hasRendered()); // proceed iterating if voice was created in this fragment cycle |
887 |
// break if selection succeeded |
888 |
if (itSelectedVoice && itSelectedVoice->hasRendered()) { |
889 |
// remember which voice we stole, so we can simply proceed on next voice stealing |
890 |
this->itLastStolenVoiceGlobally = itSelectedVoice; |
891 |
break; // selection succeeded |
892 |
} |
893 |
} |
894 |
// get (next) oldest key |
895 |
RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKey) ? ++this->iuiLastStolenKey : pSelectedChannel->pActiveKeys->first(); |
896 |
while (iuiSelectedKey) { |
897 |
midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey]; |
898 |
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
899 |
// proceed iterating if voice was created in this fragment cycle |
900 |
while (itSelectedVoice && !itSelectedVoice->hasRendered()) ++itSelectedVoice; |
901 |
// found a "stealable" voice ? |
902 |
if (itSelectedVoice && itSelectedVoice->hasRendered()) { |
903 |
// remember which voice on which key on which engine channel we stole, so we can simply proceed on next voice stealing |
904 |
this->iuiLastStolenKeyGlobally = iuiSelectedKey; |
905 |
this->itLastStolenVoiceGlobally = itSelectedVoice; |
906 |
this->pLastStolenChannel = pSelectedChannel; |
907 |
break; // selection succeeded |
908 |
} |
909 |
++iuiSelectedKey; // get next key on current engine channel |
910 |
} |
911 |
// get next engine channel |
912 |
iChannelIndex = (iChannelIndex + 1) % engineChannels.size(); |
913 |
pSelectedChannel = engineChannels[iChannelIndex]; |
914 |
} |
915 |
} |
916 |
|
917 |
#if CONFIG_DEVMODE |
918 |
if (!itSelectedVoice->IsActive()) { |
919 |
dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n")); |
920 |
return -1; |
921 |
} |
922 |
#endif // CONFIG_DEVMODE |
923 |
|
924 |
// now kill the selected voice |
925 |
itSelectedVoice->Kill(itNoteOnEvent); |
926 |
|
927 |
--VoiceTheftsLeft; |
928 |
|
929 |
return 0; // success |
930 |
} |
931 |
else { |
932 |
dmsg(1,("Event pool emtpy!\n")); |
933 |
return -1; |
934 |
} |
935 |
} |
936 |
|
937 |
/** |
938 |
* Removes the given voice from the MIDI key's list of active voices. |
939 |
* This method will be called when a voice went inactive, e.g. because |
940 |
* it finished to playback its sample, finished its release stage or |
941 |
* just was killed. |
942 |
* |
943 |
* @param pEngineChannel - engine channel on which this event occured on |
944 |
* @param itVoice - points to the voice to be freed |
945 |
*/ |
946 |
void Engine::FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice) { |
947 |
if (itVoice) { |
948 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoice->MIDIKey]; |
949 |
|
950 |
uint keygroup = itVoice->KeyGroup; |
951 |
|
952 |
// free the voice object |
953 |
pVoicePool->free(itVoice); |
954 |
|
955 |
// if no other voices left and member of a key group, remove from key group |
956 |
if (pKey->pActiveVoices->isEmpty() && keygroup) { |
957 |
uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[keygroup]; |
958 |
if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group |
959 |
} |
960 |
} |
961 |
else std::cerr << "Couldn't release voice! (!itVoice)\n" << std::flush; |
962 |
} |
963 |
|
964 |
/** |
965 |
* Called when there's no more voice left on a key, this call will |
966 |
* update the key info respectively. |
967 |
* |
968 |
* @param pEngineChannel - engine channel on which this event occured on |
969 |
* @param pKey - key which is now inactive |
970 |
*/ |
971 |
void Engine::FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey) { |
972 |
if (pKey->pActiveVoices->isEmpty()) { |
973 |
pKey->Active = false; |
974 |
pEngineChannel->pActiveKeys->free(pKey->itSelf); // remove key from list of active keys |
975 |
pKey->itSelf = RTList<uint>::Iterator(); |
976 |
pKey->ReleaseTrigger = false; |
977 |
pKey->pEvents->clear(); |
978 |
dmsg(3,("Key has no more voices now\n")); |
979 |
} |
980 |
else dmsg(1,("gig::Engine: Oops, tried to free a key which contains voices.\n")); |
981 |
} |
982 |
|
983 |
/** |
984 |
* Reacts on supported control change commands (e.g. pitch bend wheel, |
985 |
* modulation wheel, aftertouch). |
986 |
* |
987 |
* @param pEngineChannel - engine channel on which this event occured on |
988 |
* @param itControlChangeEvent - controller, value and time stamp of the event |
989 |
*/ |
990 |
void Engine::ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent) { |
991 |
dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value)); |
992 |
|
993 |
// update controller value in the engine channel's controller table |
994 |
pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value; |
995 |
|
996 |
// move event from the unsorted event list to the control change event list |
997 |
Pool<Event>::Iterator itControlChangeEventOnCCList = itControlChangeEvent.moveToEndOf(pEngineChannel->pCCEvents); |
998 |
|
999 |
switch (itControlChangeEventOnCCList->Param.CC.Controller) { |
1000 |
case 7: { // volume |
1001 |
//TODO: not sample accurate yet |
1002 |
pEngineChannel->GlobalVolume = (float) itControlChangeEventOnCCList->Param.CC.Value / 127.0f; |
1003 |
break; |
1004 |
} |
1005 |
case 10: { // panpot |
1006 |
//TODO: not sample accurate yet |
1007 |
const int pan = (int) itControlChangeEventOnCCList->Param.CC.Value - 64; |
1008 |
pEngineChannel->GlobalPanLeft = 1.0f - float(RTMath::Max(pan, 0)) / 63.0f; |
1009 |
pEngineChannel->GlobalPanRight = 1.0f - float(RTMath::Min(pan, 0)) / -64.0f; |
1010 |
break; |
1011 |
} |
1012 |
case 64: { // sustain |
1013 |
if (itControlChangeEventOnCCList->Param.CC.Value >= 64 && !pEngineChannel->SustainPedal) { |
1014 |
dmsg(4,("PEDAL DOWN\n")); |
1015 |
pEngineChannel->SustainPedal = true; |
1016 |
|
1017 |
// cancel release process of voices if necessary |
1018 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1019 |
for (; iuiKey; ++iuiKey) { |
1020 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1021 |
if (!pKey->KeyPressed) { |
1022 |
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
1023 |
if (itNewEvent) { |
1024 |
*itNewEvent = *itControlChangeEventOnCCList; // copy event to the key's own event list |
1025 |
itNewEvent->Type = Event::type_cancel_release; // transform event type |
1026 |
} |
1027 |
else dmsg(1,("Event pool emtpy!\n")); |
1028 |
} |
1029 |
} |
1030 |
} |
1031 |
if (itControlChangeEventOnCCList->Param.CC.Value < 64 && pEngineChannel->SustainPedal) { |
1032 |
dmsg(4,("PEDAL UP\n")); |
1033 |
pEngineChannel->SustainPedal = false; |
1034 |
|
1035 |
// release voices if their respective key is not pressed |
1036 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1037 |
for (; iuiKey; ++iuiKey) { |
1038 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1039 |
if (!pKey->KeyPressed) { |
1040 |
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
1041 |
if (itNewEvent) { |
1042 |
*itNewEvent = *itControlChangeEventOnCCList; // copy event to the key's own event list |
1043 |
itNewEvent->Type = Event::type_release; // transform event type |
1044 |
} |
1045 |
else dmsg(1,("Event pool emtpy!\n")); |
1046 |
} |
1047 |
} |
1048 |
} |
1049 |
break; |
1050 |
} |
1051 |
|
1052 |
|
1053 |
// Channel Mode Messages |
1054 |
|
1055 |
case 120: { // all sound off |
1056 |
KillAllVoices(pEngineChannel, itControlChangeEventOnCCList); |
1057 |
break; |
1058 |
} |
1059 |
case 121: { // reset all controllers |
1060 |
pEngineChannel->ResetControllers(); |
1061 |
break; |
1062 |
} |
1063 |
case 123: { // all notes off |
1064 |
ReleaseAllVoices(pEngineChannel, itControlChangeEventOnCCList); |
1065 |
break; |
1066 |
} |
1067 |
} |
1068 |
} |
1069 |
|
1070 |
/** |
1071 |
* Reacts on MIDI system exclusive messages. |
1072 |
* |
1073 |
* @param itSysexEvent - sysex data size and time stamp of the sysex event |
1074 |
*/ |
1075 |
void Engine::ProcessSysex(Pool<Event>::Iterator& itSysexEvent) { |
1076 |
RingBuffer<uint8_t>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader(); |
1077 |
|
1078 |
uint8_t exclusive_status, id; |
1079 |
if (!reader.pop(&exclusive_status)) goto free_sysex_data; |
1080 |
if (!reader.pop(&id)) goto free_sysex_data; |
1081 |
if (exclusive_status != 0xF0) goto free_sysex_data; |
1082 |
|
1083 |
switch (id) { |
1084 |
case 0x41: { // Roland |
1085 |
dmsg(3,("Roland Sysex\n")); |
1086 |
uint8_t device_id, model_id, cmd_id; |
1087 |
if (!reader.pop(&device_id)) goto free_sysex_data; |
1088 |
if (!reader.pop(&model_id)) goto free_sysex_data; |
1089 |
if (!reader.pop(&cmd_id)) goto free_sysex_data; |
1090 |
if (model_id != 0x42 /*GS*/) goto free_sysex_data; |
1091 |
if (cmd_id != 0x12 /*DT1*/) goto free_sysex_data; |
1092 |
|
1093 |
// command address |
1094 |
uint8_t addr[3]; // 2 byte addr MSB, followed by 1 byte addr LSB) |
1095 |
const RingBuffer<uint8_t>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later |
1096 |
if (reader.read(&addr[0], 3) != 3) goto free_sysex_data; |
1097 |
if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters |
1098 |
dmsg(3,("\tSystem Parameter\n")); |
1099 |
} |
1100 |
else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters |
1101 |
dmsg(3,("\tCommon Parameter\n")); |
1102 |
} |
1103 |
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1) |
1104 |
dmsg(3,("\tPart Parameter\n")); |
1105 |
switch (addr[2]) { |
1106 |
case 0x40: { // scale tuning |
1107 |
dmsg(3,("\t\tScale Tuning\n")); |
1108 |
uint8_t scale_tunes[12]; // detuning of all 12 semitones of an octave |
1109 |
if (reader.read(&scale_tunes[0], 12) != 12) goto free_sysex_data; |
1110 |
uint8_t checksum; |
1111 |
if (!reader.pop(&checksum)) goto free_sysex_data; |
1112 |
#if CONFIG_ASSERT_GS_SYSEX_CHECKSUM |
1113 |
if (GSCheckSum(checksum_reader, 12)) goto free_sysex_data; |
1114 |
#endif // CONFIG_ASSERT_GS_SYSEX_CHECKSUM |
1115 |
for (int i = 0; i < 12; i++) scale_tunes[i] -= 64; |
1116 |
AdjustScale((int8_t*) scale_tunes); |
1117 |
dmsg(3,("\t\t\tNew scale applied.\n")); |
1118 |
break; |
1119 |
} |
1120 |
} |
1121 |
} |
1122 |
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2) |
1123 |
} |
1124 |
else if (addr[0] == 0x41) { // Drum Setup Parameters |
1125 |
} |
1126 |
break; |
1127 |
} |
1128 |
} |
1129 |
|
1130 |
free_sysex_data: // finally free sysex data |
1131 |
pSysexBuffer->increment_read_ptr(itSysexEvent->Param.Sysex.Size); |
1132 |
} |
1133 |
|
1134 |
/** |
1135 |
* Calculates the Roland GS sysex check sum. |
1136 |
* |
1137 |
* @param AddrReader - reader which currently points to the first GS |
1138 |
* command address byte of the GS sysex message in |
1139 |
* question |
1140 |
* @param DataSize - size of the GS message data (in bytes) |
1141 |
*/ |
1142 |
uint8_t Engine::GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize) { |
1143 |
RingBuffer<uint8_t>::NonVolatileReader reader = AddrReader; |
1144 |
uint bytes = 3 /*addr*/ + DataSize; |
1145 |
uint8_t addr_and_data[bytes]; |
1146 |
reader.read(&addr_and_data[0], bytes); |
1147 |
uint8_t sum = 0; |
1148 |
for (uint i = 0; i < bytes; i++) sum += addr_and_data[i]; |
1149 |
return 128 - sum % 128; |
1150 |
} |
1151 |
|
1152 |
/** |
1153 |
* Allows to tune each of the twelve semitones of an octave. |
1154 |
* |
1155 |
* @param ScaleTunes - detuning of all twelve semitones (in cents) |
1156 |
*/ |
1157 |
void Engine::AdjustScale(int8_t ScaleTunes[12]) { |
1158 |
memcpy(&this->ScaleTuning[0], &ScaleTunes[0], 12); //TODO: currently not sample accurate |
1159 |
} |
1160 |
|
1161 |
/** |
1162 |
* Releases all voices on an engine channel. All voices will go into |
1163 |
* the release stage and thus it might take some time (e.g. dependant to |
1164 |
* their envelope release time) until they actually die. |
1165 |
* |
1166 |
* @param pEngineChannel - engine channel on which all voices should be released |
1167 |
* @param itReleaseEvent - event which caused this releasing of all voices |
1168 |
*/ |
1169 |
void Engine::ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent) { |
1170 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1171 |
while (iuiKey) { |
1172 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1173 |
++iuiKey; |
1174 |
// append a 'release' event to the key's own event list |
1175 |
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
1176 |
if (itNewEvent) { |
1177 |
*itNewEvent = *itReleaseEvent; // copy original event (to the key's event list) |
1178 |
itNewEvent->Type = Event::type_release; // transform event type |
1179 |
} |
1180 |
else dmsg(1,("Event pool emtpy!\n")); |
1181 |
} |
1182 |
} |
1183 |
|
1184 |
/** |
1185 |
* Kills all voices on an engine channel as soon as possible. Voices |
1186 |
* won't get into release state, their volume level will be ramped down |
1187 |
* as fast as possible. |
1188 |
* |
1189 |
* @param pEngineChannel - engine channel on which all voices should be killed |
1190 |
* @param itKillEvent - event which caused this killing of all voices |
1191 |
*/ |
1192 |
void Engine::KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent) { |
1193 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1194 |
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
1195 |
while (iuiKey != end) { // iterate through all active keys |
1196 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1197 |
++iuiKey; |
1198 |
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
1199 |
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
1200 |
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
1201 |
itVoice->Kill(itKillEvent); |
1202 |
} |
1203 |
} |
1204 |
} |
1205 |
|
1206 |
/** |
1207 |
* Initialize the parameter sequence for the modulation destination given by |
1208 |
* by 'dst' with the constant value given by val. |
1209 |
*/ |
1210 |
void Engine::ResetSynthesisParameters(Event::destination_t dst, float val) { |
1211 |
int maxsamples = pAudioOutputDevice->MaxSamplesPerCycle(); |
1212 |
float* m = &pSynthesisParameters[dst][0]; |
1213 |
for (int i = 0; i < maxsamples; i += 4) { |
1214 |
m[i] = val; |
1215 |
m[i+1] = val; |
1216 |
m[i+2] = val; |
1217 |
m[i+3] = val; |
1218 |
} |
1219 |
} |
1220 |
|
1221 |
uint Engine::VoiceCount() { |
1222 |
return ActiveVoiceCount; |
1223 |
} |
1224 |
|
1225 |
uint Engine::VoiceCountMax() { |
1226 |
return ActiveVoiceCountMax; |
1227 |
} |
1228 |
|
1229 |
bool Engine::DiskStreamSupported() { |
1230 |
return true; |
1231 |
} |
1232 |
|
1233 |
uint Engine::DiskStreamCount() { |
1234 |
return (pDiskThread) ? pDiskThread->ActiveStreamCount : 0; |
1235 |
} |
1236 |
|
1237 |
uint Engine::DiskStreamCountMax() { |
1238 |
return (pDiskThread) ? pDiskThread->ActiveStreamCountMax : 0; |
1239 |
} |
1240 |
|
1241 |
String Engine::DiskStreamBufferFillBytes() { |
1242 |
return pDiskThread->GetBufferFillBytes(); |
1243 |
} |
1244 |
|
1245 |
String Engine::DiskStreamBufferFillPercentage() { |
1246 |
return pDiskThread->GetBufferFillPercentage(); |
1247 |
} |
1248 |
|
1249 |
String Engine::EngineName() { |
1250 |
return LS_GIG_ENGINE_NAME; |
1251 |
} |
1252 |
|
1253 |
String Engine::Description() { |
1254 |
return "Gigasampler Engine"; |
1255 |
} |
1256 |
|
1257 |
String Engine::Version() { |
1258 |
String s = "$Revision: 1.41 $"; |
1259 |
return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
1260 |
} |
1261 |
|
1262 |
}} // namespace LinuxSampler::gig |