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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, 2006 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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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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ResetInternal(); |
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ResetScaleTuning(); |
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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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MidiInputPort::RemoveSysexListener(this); |
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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 (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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ResetScaleTuning(); |
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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 protected by a mutex. |
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*/ |
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void Engine::ResetInternal() { |
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ResetInternalMutex.Lock(); |
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|
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// make sure that the engine does not get any sysex messages |
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// while it's reseting |
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bool sysexDisabled = MidiInputPort::RemoveSysexListener(this); |
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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 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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pSysexBuffer->init(); |
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if (sysexDisabled) MidiInputPort::AddSysexListener(this); |
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ResetInternalMutex.Unlock(); |
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} |
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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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/** |
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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 Exception(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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std::cerr << "gig::Engine: WARNING, CONFIG_EG_MIN_RELEASE_TIME " |
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<< "too big for current audio fragment size & sampling rate! " |
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<< "May lead to click sounds if voice stealing chimes in!\n" << std::flush; |
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// force volume ramp downs at the beginning of each fragment |
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MaxFadeOutPos = 0; |
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// lower minimum release time |
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const float minReleaseTime = (float) MaxSamplesPerCycle / (float) SampleRate; |
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for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
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iterVoice->EG1.CalculateFadeOutCoeff(minReleaseTime, SampleRate); |
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} |
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pVoicePool->clear(); |
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} |
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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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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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// We only allow a maximum of CONFIG_MAX_VOICES voices to be spawned |
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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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VoiceSpawnsLeft = CONFIG_MAX_VOICES; |
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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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// reset internal voice counter (just for statistic of active voices) |
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ActiveVoiceCountTemp = 0; |
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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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} |
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|
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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 |
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pVoiceStealingQueue->clear(); |
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|
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// just some statistics about this engine instance |
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ActiveVoiceCount = ActiveVoiceCountTemp; |
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if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount; |
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|
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FrameTime += Samples; |
412 |
|
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return 0; |
414 |
} |
415 |
|
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/** |
417 |
* Dispatch and handle all events in this audio fragment for the given |
418 |
* engine channel. |
419 |
* |
420 |
* @param pEngineChannel - engine channel on which events should be |
421 |
* processed |
422 |
* @param Samples - amount of sample points to be processed in |
423 |
* this audio fragment cycle |
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*/ |
425 |
void Engine::ProcessEvents(EngineChannel* pEngineChannel, uint Samples) { |
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// get all events from the engine channels's input event queue which belong to the current fragment |
427 |
// (these are the common events like NoteOn, NoteOff, ControlChange, etc.) |
428 |
pEngineChannel->ImportEvents(Samples); |
429 |
|
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// process events |
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{ |
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RTList<Event>::Iterator itEvent = pEngineChannel->pEvents->first(); |
433 |
RTList<Event>::Iterator end = pEngineChannel->pEvents->end(); |
434 |
for (; itEvent != end; ++itEvent) { |
435 |
switch (itEvent->Type) { |
436 |
case Event::type_note_on: |
437 |
dmsg(5,("Engine: Note on received\n")); |
438 |
ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent); |
439 |
break; |
440 |
case Event::type_note_off: |
441 |
dmsg(5,("Engine: Note off received\n")); |
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ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent); |
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break; |
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case Event::type_control_change: |
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dmsg(5,("Engine: MIDI CC received\n")); |
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ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent); |
447 |
break; |
448 |
case Event::type_pitchbend: |
449 |
dmsg(5,("Engine: Pitchbend received\n")); |
450 |
ProcessPitchbend((EngineChannel*)itEvent->pEngineChannel, itEvent); |
451 |
break; |
452 |
} |
453 |
} |
454 |
} |
455 |
|
456 |
// reset voice stealing for the next engine channel (or next audio fragment) |
457 |
itLastStolenVoice = RTList<Voice>::Iterator(); |
458 |
itLastStolenVoiceGlobally = RTList<Voice>::Iterator(); |
459 |
iuiLastStolenKey = RTList<uint>::Iterator(); |
460 |
iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); |
461 |
pLastStolenChannel = NULL; |
462 |
} |
463 |
|
464 |
/** |
465 |
* Render all 'normal' voices (that is voices which were not stolen in |
466 |
* this fragment) on the given engine channel. |
467 |
* |
468 |
* @param pEngineChannel - engine channel on which audio should be |
469 |
* rendered |
470 |
* @param Samples - amount of sample points to be rendered in |
471 |
* this audio fragment cycle |
472 |
*/ |
473 |
void Engine::RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples) { |
474 |
#if !CONFIG_PROCESS_MUTED_CHANNELS |
475 |
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
476 |
#endif |
477 |
|
478 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
479 |
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
480 |
while (iuiKey != end) { // iterate through all active keys |
481 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
482 |
++iuiKey; |
483 |
|
484 |
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
485 |
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
486 |
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
487 |
// now render current voice |
488 |
itVoice->Render(Samples); |
489 |
if (itVoice->IsActive()) ActiveVoiceCountTemp++; // still active |
490 |
else { // voice reached end, is now inactive |
491 |
FreeVoice(pEngineChannel, itVoice); // remove voice from the list of active voices |
492 |
} |
493 |
} |
494 |
} |
495 |
} |
496 |
|
497 |
/** |
498 |
* Render all stolen voices (only voices which were stolen in this |
499 |
* fragment) on the given engine channel. Stolen voices are rendered |
500 |
* after all normal voices have been rendered; this is needed to render |
501 |
* audio of those voices which were selected for voice stealing until |
502 |
* the point were the stealing (that is the take over of the voice) |
503 |
* actually happened. |
504 |
* |
505 |
* @param pEngineChannel - engine channel on which audio should be |
506 |
* rendered |
507 |
* @param Samples - amount of sample points to be rendered in |
508 |
* this audio fragment cycle |
509 |
*/ |
510 |
void Engine::RenderStolenVoices(uint Samples) { |
511 |
RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first(); |
512 |
RTList<Event>::Iterator end = pVoiceStealingQueue->end(); |
513 |
for (; itVoiceStealEvent != end; ++itVoiceStealEvent) { |
514 |
EngineChannel* pEngineChannel = (EngineChannel*) itVoiceStealEvent->pEngineChannel; |
515 |
Pool<Voice>::Iterator itNewVoice = |
516 |
LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false, false); |
517 |
if (itNewVoice) { |
518 |
itNewVoice->Render(Samples); |
519 |
if (itNewVoice->IsActive()) ActiveVoiceCountTemp++; // still active |
520 |
else { // voice reached end, is now inactive |
521 |
FreeVoice(pEngineChannel, itNewVoice); // remove voice from the list of active voices |
522 |
} |
523 |
} |
524 |
else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n")); |
525 |
|
526 |
// we need to clear the key's event list explicitly here in case key was never active |
527 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoiceStealEvent->Param.Note.Key]; |
528 |
pKey->VoiceTheftsQueued--; |
529 |
if (!pKey->Active && !pKey->VoiceTheftsQueued) pKey->pEvents->clear(); |
530 |
} |
531 |
} |
532 |
|
533 |
/** |
534 |
* Free all keys which have turned inactive in this audio fragment, from |
535 |
* the list of active keys and clear all event lists on that engine |
536 |
* channel. |
537 |
* |
538 |
* @param pEngineChannel - engine channel to cleanup |
539 |
*/ |
540 |
void Engine::PostProcess(EngineChannel* pEngineChannel) { |
541 |
// free all keys which have no active voices left |
542 |
{ |
543 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
544 |
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
545 |
while (iuiKey != end) { // iterate through all active keys |
546 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
547 |
++iuiKey; |
548 |
if (pKey->pActiveVoices->isEmpty()) FreeKey(pEngineChannel, pKey); |
549 |
#if CONFIG_DEVMODE |
550 |
else { // just a sanity check for debugging |
551 |
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
552 |
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
553 |
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
554 |
if (itVoice->itKillEvent) { |
555 |
dmsg(1,("gig::Engine: ERROR, killed voice survived !!!\n")); |
556 |
} |
557 |
} |
558 |
} |
559 |
#endif // CONFIG_DEVMODE |
560 |
} |
561 |
} |
562 |
|
563 |
// empty the engine channel's own event lists |
564 |
pEngineChannel->ClearEventLists(); |
565 |
} |
566 |
|
567 |
/** |
568 |
* Will be called by the MIDI input device whenever a MIDI system |
569 |
* exclusive message has arrived. |
570 |
* |
571 |
* @param pData - pointer to sysex data |
572 |
* @param Size - lenght of sysex data (in bytes) |
573 |
*/ |
574 |
void Engine::SendSysex(void* pData, uint Size) { |
575 |
Event event = pEventGenerator->CreateEvent(); |
576 |
event.Type = Event::type_sysex; |
577 |
event.Param.Sysex.Size = Size; |
578 |
event.pEngineChannel = NULL; // as Engine global event |
579 |
if (pEventQueue->write_space() > 0) { |
580 |
if (pSysexBuffer->write_space() >= Size) { |
581 |
// copy sysex data to input buffer |
582 |
uint toWrite = Size; |
583 |
uint8_t* pPos = (uint8_t*) pData; |
584 |
while (toWrite) { |
585 |
const uint writeNow = RTMath::Min(toWrite, pSysexBuffer->write_space_to_end()); |
586 |
pSysexBuffer->write(pPos, writeNow); |
587 |
toWrite -= writeNow; |
588 |
pPos += writeNow; |
589 |
|
590 |
} |
591 |
// finally place sysex event into input event queue |
592 |
pEventQueue->push(&event); |
593 |
} |
594 |
else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,CONFIG_SYSEX_BUFFER_SIZE)); |
595 |
} |
596 |
else dmsg(1,("Engine: Input event queue full!")); |
597 |
} |
598 |
|
599 |
/** |
600 |
* Assigns and triggers a new voice for the respective MIDI key. |
601 |
* |
602 |
* @param pEngineChannel - engine channel on which this event occured on |
603 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
604 |
*/ |
605 |
void Engine::ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) { |
606 |
#if !CONFIG_PROCESS_MUTED_CHANNELS |
607 |
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
608 |
#endif |
609 |
|
610 |
const int key = itNoteOnEvent->Param.Note.Key; |
611 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[key]; |
612 |
|
613 |
// move note on event to the key's own event list |
614 |
RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents); |
615 |
|
616 |
// if Solo Mode then kill all already active voices |
617 |
if (pEngineChannel->SoloMode) { |
618 |
Pool<uint>::Iterator itYoungestKey = pEngineChannel->pActiveKeys->last(); |
619 |
if (itYoungestKey) { |
620 |
const int iYoungestKey = *itYoungestKey; |
621 |
const midi_key_info_t* pOtherKey = &pEngineChannel->pMIDIKeyInfo[iYoungestKey]; |
622 |
if (pOtherKey->Active) { |
623 |
// get final portamento position of currently active voice |
624 |
if (pEngineChannel->PortamentoMode) { |
625 |
RTList<Voice>::Iterator itVoice = pOtherKey->pActiveVoices->last(); |
626 |
if (itVoice) itVoice->UpdatePortamentoPos(itNoteOnEventOnKeyList); |
627 |
} |
628 |
// kill all voices on the (other) key |
629 |
RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first(); |
630 |
RTList<Voice>::Iterator end = pOtherKey->pActiveVoices->end(); |
631 |
for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) { |
632 |
if (itVoiceToBeKilled->Type != Voice::type_release_trigger) |
633 |
itVoiceToBeKilled->Kill(itNoteOnEventOnKeyList); |
634 |
} |
635 |
} |
636 |
} |
637 |
// set this key as 'currently active solo key' |
638 |
pEngineChannel->SoloKey = key; |
639 |
} |
640 |
|
641 |
// Change key dimension value if key is in keyswitching area |
642 |
{ |
643 |
const ::gig::Instrument* pInstrument = pEngineChannel->pInstrument; |
644 |
if (key >= pInstrument->DimensionKeyRange.low && key <= pInstrument->DimensionKeyRange.high) |
645 |
pEngineChannel->CurrentKeyDimension = float(key - pInstrument->DimensionKeyRange.low) / |
646 |
(pInstrument->DimensionKeyRange.high - pInstrument->DimensionKeyRange.low + 1); |
647 |
} |
648 |
|
649 |
pKey->KeyPressed = true; // the MIDI key was now pressed down |
650 |
pKey->Velocity = itNoteOnEventOnKeyList->Param.Note.Velocity; |
651 |
pKey->NoteOnTime = FrameTime + itNoteOnEventOnKeyList->FragmentPos(); // will be used to calculate note length |
652 |
|
653 |
// cancel release process of voices on this key if needed |
654 |
if (pKey->Active && !pEngineChannel->SustainPedal) { |
655 |
RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend(); |
656 |
if (itCancelReleaseEvent) { |
657 |
*itCancelReleaseEvent = *itNoteOnEventOnKeyList; // copy event |
658 |
itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type |
659 |
} |
660 |
else dmsg(1,("Event pool emtpy!\n")); |
661 |
} |
662 |
|
663 |
// allocate and trigger new voice(s) for the key |
664 |
{ |
665 |
// first, get total amount of required voices (dependant on amount of layers) |
666 |
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOnEventOnKeyList->Param.Note.Key); |
667 |
if (pRegion) { |
668 |
int voicesRequired = pRegion->Layers; |
669 |
// now launch the required amount of voices |
670 |
for (int i = 0; i < voicesRequired; i++) |
671 |
LaunchVoice(pEngineChannel, itNoteOnEventOnKeyList, i, false, true, true); |
672 |
} |
673 |
} |
674 |
|
675 |
// if neither a voice was spawned or postponed then remove note on event from key again |
676 |
if (!pKey->Active && !pKey->VoiceTheftsQueued) |
677 |
pKey->pEvents->free(itNoteOnEventOnKeyList); |
678 |
|
679 |
if (!pEngineChannel->SoloMode || pEngineChannel->PortamentoPos < 0.0f) pEngineChannel->PortamentoPos = (float) key; |
680 |
pKey->RoundRobinIndex++; |
681 |
} |
682 |
|
683 |
/** |
684 |
* Releases the voices on the given key if sustain pedal is not pressed. |
685 |
* If sustain is pressed, the release of the note will be postponed until |
686 |
* sustain pedal will be released or voice turned inactive by itself (e.g. |
687 |
* due to completion of sample playback). |
688 |
* |
689 |
* @param pEngineChannel - engine channel on which this event occured on |
690 |
* @param itNoteOffEvent - key, velocity and time stamp of the event |
691 |
*/ |
692 |
void Engine::ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) { |
693 |
#if !CONFIG_PROCESS_MUTED_CHANNELS |
694 |
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
695 |
#endif |
696 |
|
697 |
const int iKey = itNoteOffEvent->Param.Note.Key; |
698 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[iKey]; |
699 |
pKey->KeyPressed = false; // the MIDI key was now released |
700 |
|
701 |
// move event to the key's own event list |
702 |
RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents); |
703 |
|
704 |
bool bShouldRelease = pKey->Active && ShouldReleaseVoice(pEngineChannel, itNoteOffEventOnKeyList->Param.Note.Key); |
705 |
|
706 |
// in case Solo Mode is enabled, kill all voices on this key and respawn a voice on the highest pressed key (if any) |
707 |
if (pEngineChannel->SoloMode) { //TODO: this feels like too much code just for handling solo mode :P |
708 |
bool bOtherKeysPressed = false; |
709 |
if (iKey == pEngineChannel->SoloKey) { |
710 |
pEngineChannel->SoloKey = -1; |
711 |
// if there's still a key pressed down, respawn a voice (group) on the highest key |
712 |
for (int i = 127; i > 0; i--) { |
713 |
midi_key_info_t* pOtherKey = &pEngineChannel->pMIDIKeyInfo[i]; |
714 |
if (pOtherKey->KeyPressed) { |
715 |
bOtherKeysPressed = true; |
716 |
// make the other key the new 'currently active solo key' |
717 |
pEngineChannel->SoloKey = i; |
718 |
// get final portamento position of currently active voice |
719 |
if (pEngineChannel->PortamentoMode) { |
720 |
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
721 |
if (itVoice) itVoice->UpdatePortamentoPos(itNoteOffEventOnKeyList); |
722 |
} |
723 |
// create a pseudo note on event |
724 |
RTList<Event>::Iterator itPseudoNoteOnEvent = pOtherKey->pEvents->allocAppend(); |
725 |
if (itPseudoNoteOnEvent) { |
726 |
// copy event |
727 |
*itPseudoNoteOnEvent = *itNoteOffEventOnKeyList; |
728 |
// transform event to a note on event |
729 |
itPseudoNoteOnEvent->Type = Event::type_note_on; |
730 |
itPseudoNoteOnEvent->Param.Note.Key = i; |
731 |
itPseudoNoteOnEvent->Param.Note.Velocity = pOtherKey->Velocity; |
732 |
// allocate and trigger new voice(s) for the other key |
733 |
{ |
734 |
// first, get total amount of required voices (dependant on amount of layers) |
735 |
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(i); |
736 |
if (pRegion) { |
737 |
int voicesRequired = pRegion->Layers; |
738 |
// now launch the required amount of voices |
739 |
for (int iLayer = 0; iLayer < voicesRequired; iLayer++) |
740 |
LaunchVoice(pEngineChannel, itPseudoNoteOnEvent, iLayer, false, true, false); |
741 |
} |
742 |
} |
743 |
// if neither a voice was spawned or postponed then remove note on event from key again |
744 |
if (!pOtherKey->Active && !pOtherKey->VoiceTheftsQueued) |
745 |
pOtherKey->pEvents->free(itPseudoNoteOnEvent); |
746 |
|
747 |
} else dmsg(1,("Could not respawn voice, no free event left\n")); |
748 |
break; // done |
749 |
} |
750 |
} |
751 |
} |
752 |
if (bOtherKeysPressed) { |
753 |
if (pKey->Active) { // kill all voices on this key |
754 |
bShouldRelease = false; // no need to release, as we kill it here |
755 |
RTList<Voice>::Iterator itVoiceToBeKilled = pKey->pActiveVoices->first(); |
756 |
RTList<Voice>::Iterator end = pKey->pActiveVoices->end(); |
757 |
for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) { |
758 |
if (itVoiceToBeKilled->Type != Voice::type_release_trigger) |
759 |
itVoiceToBeKilled->Kill(itNoteOffEventOnKeyList); |
760 |
} |
761 |
} |
762 |
} else pEngineChannel->PortamentoPos = -1.0f; |
763 |
} |
764 |
|
765 |
// if no solo mode (the usual case) or if solo mode and no other key pressed, then release voices on this key if needed |
766 |
if (bShouldRelease) { |
767 |
itNoteOffEventOnKeyList->Type = Event::type_release; // transform event type |
768 |
|
769 |
// spawn release triggered voice(s) if needed |
770 |
if (pKey->ReleaseTrigger) { |
771 |
// first, get total amount of required voices (dependant on amount of layers) |
772 |
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOffEventOnKeyList->Param.Note.Key); |
773 |
if (pRegion) { |
774 |
int voicesRequired = pRegion->Layers; |
775 |
|
776 |
// MIDI note-on velocity is used instead of note-off velocity |
777 |
itNoteOffEventOnKeyList->Param.Note.Velocity = pKey->Velocity; |
778 |
|
779 |
// now launch the required amount of voices |
780 |
for (int i = 0; i < voicesRequired; i++) |
781 |
LaunchVoice(pEngineChannel, itNoteOffEventOnKeyList, i, true, false, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples |
782 |
} |
783 |
pKey->ReleaseTrigger = false; |
784 |
} |
785 |
} |
786 |
|
787 |
// if neither a voice was spawned or postponed on this key then remove note off event from key again |
788 |
if (!pKey->Active && !pKey->VoiceTheftsQueued) |
789 |
pKey->pEvents->free(itNoteOffEventOnKeyList); |
790 |
} |
791 |
|
792 |
/** |
793 |
* Moves pitchbend event from the general (input) event list to the engine |
794 |
* channel's event list. It will actually processed later by the |
795 |
* respective voice. |
796 |
* |
797 |
* @param pEngineChannel - engine channel on which this event occured on |
798 |
* @param itPitchbendEvent - absolute pitch value and time stamp of the event |
799 |
*/ |
800 |
void Engine::ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent) { |
801 |
pEngineChannel->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value |
802 |
} |
803 |
|
804 |
/** |
805 |
* Allocates and triggers a new voice. This method will usually be |
806 |
* called by the ProcessNoteOn() method and by the voices itself |
807 |
* (e.g. to spawn further voices on the same key for layered sounds). |
808 |
* |
809 |
* @param pEngineChannel - engine channel on which this event occured on |
810 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
811 |
* @param iLayer - layer index for the new voice (optional - only |
812 |
* in case of layered sounds of course) |
813 |
* @param ReleaseTriggerVoice - if new voice is a release triggered voice |
814 |
* (optional, default = false) |
815 |
* @param VoiceStealing - if voice stealing should be performed |
816 |
* when there is no free voice |
817 |
* (optional, default = true) |
818 |
* @param HandleKeyGroupConflicts - if voices should be killed due to a |
819 |
* key group conflict |
820 |
* @returns pointer to new voice or NULL if there was no free voice or |
821 |
* if the voice wasn't triggered (for example when no region is |
822 |
* defined for the given key). |
823 |
*/ |
824 |
Pool<Voice>::Iterator Engine::LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing, bool HandleKeyGroupConflicts) { |
825 |
int MIDIKey = itNoteOnEvent->Param.Note.Key; |
826 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[MIDIKey]; |
827 |
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(MIDIKey); |
828 |
|
829 |
// if nothing defined for this key |
830 |
if (!pRegion) return Pool<Voice>::Iterator(); // nothing to do |
831 |
|
832 |
// only mark the first voice of a layered voice (group) to be in a |
833 |
// key group, so the layered voices won't kill each other |
834 |
int iKeyGroup = (iLayer == 0 && !ReleaseTriggerVoice) ? pRegion->KeyGroup : 0; |
835 |
|
836 |
// handle key group (a.k.a. exclusive group) conflicts |
837 |
if (HandleKeyGroupConflicts) { |
838 |
if (iKeyGroup) { // if this voice / key belongs to a key group |
839 |
uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[iKeyGroup]; |
840 |
if (*ppKeyGroup) { // if there's already an active key in that key group |
841 |
midi_key_info_t* pOtherKey = &pEngineChannel->pMIDIKeyInfo[**ppKeyGroup]; |
842 |
// kill all voices on the (other) key |
843 |
RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first(); |
844 |
RTList<Voice>::Iterator end = pOtherKey->pActiveVoices->end(); |
845 |
for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) { |
846 |
if (itVoiceToBeKilled->Type != Voice::type_release_trigger) { |
847 |
itVoiceToBeKilled->Kill(itNoteOnEvent); |
848 |
--VoiceSpawnsLeft; //FIXME: just a hack, we should better check in StealVoice() if the voice was killed due to key conflict |
849 |
} |
850 |
} |
851 |
} |
852 |
} |
853 |
} |
854 |
|
855 |
Voice::type_t VoiceType = Voice::type_normal; |
856 |
|
857 |
// get current dimension values to select the right dimension region |
858 |
//TODO: for stolen voices this dimension region selection block is processed twice, this should be changed |
859 |
//FIXME: controller values for selecting the dimension region here are currently not sample accurate |
860 |
uint DimValues[8] = { 0 }; |
861 |
for (int i = pRegion->Dimensions - 1; i >= 0; i--) { |
862 |
switch (pRegion->pDimensionDefinitions[i].dimension) { |
863 |
case ::gig::dimension_samplechannel: |
864 |
DimValues[i] = 0; //TODO: we currently ignore this dimension |
865 |
break; |
866 |
case ::gig::dimension_layer: |
867 |
DimValues[i] = iLayer; |
868 |
break; |
869 |
case ::gig::dimension_velocity: |
870 |
DimValues[i] = itNoteOnEvent->Param.Note.Velocity; |
871 |
break; |
872 |
case ::gig::dimension_channelaftertouch: |
873 |
DimValues[i] = 0; //TODO: we currently ignore this dimension |
874 |
break; |
875 |
case ::gig::dimension_releasetrigger: |
876 |
VoiceType = (ReleaseTriggerVoice) ? Voice::type_release_trigger : (!iLayer) ? Voice::type_release_trigger_required : Voice::type_normal; |
877 |
DimValues[i] = (uint) ReleaseTriggerVoice; |
878 |
break; |
879 |
case ::gig::dimension_keyboard: |
880 |
DimValues[i] = (uint) (pEngineChannel->CurrentKeyDimension * pRegion->pDimensionDefinitions[i].zones); |
881 |
break; |
882 |
case ::gig::dimension_roundrobin: |
883 |
DimValues[i] = (uint) pEngineChannel->pMIDIKeyInfo[MIDIKey].RoundRobinIndex; // incremented for each note on |
884 |
break; |
885 |
case ::gig::dimension_random: |
886 |
RandomSeed = RandomSeed * 1103515245 + 12345; // classic pseudo random number generator |
887 |
DimValues[i] = (uint) RandomSeed >> (32 - pRegion->pDimensionDefinitions[i].bits); // highest bits are most random |
888 |
break; |
889 |
case ::gig::dimension_modwheel: |
890 |
DimValues[i] = pEngineChannel->ControllerTable[1]; |
891 |
break; |
892 |
case ::gig::dimension_breath: |
893 |
DimValues[i] = pEngineChannel->ControllerTable[2]; |
894 |
break; |
895 |
case ::gig::dimension_foot: |
896 |
DimValues[i] = pEngineChannel->ControllerTable[4]; |
897 |
break; |
898 |
case ::gig::dimension_portamentotime: |
899 |
DimValues[i] = pEngineChannel->ControllerTable[5]; |
900 |
break; |
901 |
case ::gig::dimension_effect1: |
902 |
DimValues[i] = pEngineChannel->ControllerTable[12]; |
903 |
break; |
904 |
case ::gig::dimension_effect2: |
905 |
DimValues[i] = pEngineChannel->ControllerTable[13]; |
906 |
break; |
907 |
case ::gig::dimension_genpurpose1: |
908 |
DimValues[i] = pEngineChannel->ControllerTable[16]; |
909 |
break; |
910 |
case ::gig::dimension_genpurpose2: |
911 |
DimValues[i] = pEngineChannel->ControllerTable[17]; |
912 |
break; |
913 |
case ::gig::dimension_genpurpose3: |
914 |
DimValues[i] = pEngineChannel->ControllerTable[18]; |
915 |
break; |
916 |
case ::gig::dimension_genpurpose4: |
917 |
DimValues[i] = pEngineChannel->ControllerTable[19]; |
918 |
break; |
919 |
case ::gig::dimension_sustainpedal: |
920 |
DimValues[i] = pEngineChannel->ControllerTable[64]; |
921 |
break; |
922 |
case ::gig::dimension_portamento: |
923 |
DimValues[i] = pEngineChannel->ControllerTable[65]; |
924 |
break; |
925 |
case ::gig::dimension_sostenutopedal: |
926 |
DimValues[i] = pEngineChannel->ControllerTable[66]; |
927 |
break; |
928 |
case ::gig::dimension_softpedal: |
929 |
DimValues[i] = pEngineChannel->ControllerTable[67]; |
930 |
break; |
931 |
case ::gig::dimension_genpurpose5: |
932 |
DimValues[i] = pEngineChannel->ControllerTable[80]; |
933 |
break; |
934 |
case ::gig::dimension_genpurpose6: |
935 |
DimValues[i] = pEngineChannel->ControllerTable[81]; |
936 |
break; |
937 |
case ::gig::dimension_genpurpose7: |
938 |
DimValues[i] = pEngineChannel->ControllerTable[82]; |
939 |
break; |
940 |
case ::gig::dimension_genpurpose8: |
941 |
DimValues[i] = pEngineChannel->ControllerTable[83]; |
942 |
break; |
943 |
case ::gig::dimension_effect1depth: |
944 |
DimValues[i] = pEngineChannel->ControllerTable[91]; |
945 |
break; |
946 |
case ::gig::dimension_effect2depth: |
947 |
DimValues[i] = pEngineChannel->ControllerTable[92]; |
948 |
break; |
949 |
case ::gig::dimension_effect3depth: |
950 |
DimValues[i] = pEngineChannel->ControllerTable[93]; |
951 |
break; |
952 |
case ::gig::dimension_effect4depth: |
953 |
DimValues[i] = pEngineChannel->ControllerTable[94]; |
954 |
break; |
955 |
case ::gig::dimension_effect5depth: |
956 |
DimValues[i] = pEngineChannel->ControllerTable[95]; |
957 |
break; |
958 |
case ::gig::dimension_none: |
959 |
std::cerr << "gig::Engine::LaunchVoice() Error: dimension=none\n" << std::flush; |
960 |
break; |
961 |
default: |
962 |
std::cerr << "gig::Engine::LaunchVoice() Error: Unknown dimension\n" << std::flush; |
963 |
} |
964 |
} |
965 |
::gig::DimensionRegion* pDimRgn = pRegion->GetDimensionRegionByValue(DimValues); |
966 |
|
967 |
// no need to continue if sample is silent |
968 |
if (!pDimRgn->pSample || !pDimRgn->pSample->SamplesTotal) return Pool<Voice>::Iterator(); |
969 |
|
970 |
// allocate a new voice for the key |
971 |
Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend(); |
972 |
if (itNewVoice) { |
973 |
// launch the new voice |
974 |
if (itNewVoice->Trigger(pEngineChannel, itNoteOnEvent, pEngineChannel->Pitch, pDimRgn, VoiceType, iKeyGroup) < 0) { |
975 |
dmsg(4,("Voice not triggered\n")); |
976 |
pKey->pActiveVoices->free(itNewVoice); |
977 |
} |
978 |
else { // on success |
979 |
--VoiceSpawnsLeft; |
980 |
if (!pKey->Active) { // mark as active key |
981 |
pKey->Active = true; |
982 |
pKey->itSelf = pEngineChannel->pActiveKeys->allocAppend(); |
983 |
*pKey->itSelf = itNoteOnEvent->Param.Note.Key; |
984 |
} |
985 |
if (itNewVoice->KeyGroup) { |
986 |
uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[itNewVoice->KeyGroup]; |
987 |
*ppKeyGroup = &*pKey->itSelf; // put key as the (new) active key to its key group |
988 |
} |
989 |
if (itNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s) |
990 |
return itNewVoice; // success |
991 |
} |
992 |
} |
993 |
else if (VoiceStealing) { |
994 |
// try to steal one voice |
995 |
int result = StealVoice(pEngineChannel, itNoteOnEvent); |
996 |
if (!result) { // voice stolen successfully |
997 |
// put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died |
998 |
RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend(); |
999 |
if (itStealEvent) { |
1000 |
*itStealEvent = *itNoteOnEvent; // copy event |
1001 |
itStealEvent->Param.Note.Layer = iLayer; |
1002 |
itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice; |
1003 |
pKey->VoiceTheftsQueued++; |
1004 |
} |
1005 |
else dmsg(1,("Voice stealing queue full!\n")); |
1006 |
} |
1007 |
} |
1008 |
|
1009 |
return Pool<Voice>::Iterator(); // no free voice or error |
1010 |
} |
1011 |
|
1012 |
/** |
1013 |
* Will be called by LaunchVoice() method in case there are no free |
1014 |
* voices left. This method will select and kill one old voice for |
1015 |
* voice stealing and postpone the note-on event until the selected |
1016 |
* voice actually died. |
1017 |
* |
1018 |
* @param pEngineChannel - engine channel on which this event occured on |
1019 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
1020 |
* @returns 0 on success, a value < 0 if no active voice could be picked for voice stealing |
1021 |
*/ |
1022 |
int Engine::StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) { |
1023 |
if (VoiceSpawnsLeft <= 0) { |
1024 |
dmsg(1,("Max. voice thefts per audio fragment reached (you may raise CONFIG_MAX_VOICES).\n")); |
1025 |
return -1; |
1026 |
} |
1027 |
if (!pEventPool->poolIsEmpty()) { |
1028 |
|
1029 |
RTList<Voice>::Iterator itSelectedVoice; |
1030 |
|
1031 |
// Select one voice for voice stealing |
1032 |
switch (CONFIG_VOICE_STEAL_ALGO) { |
1033 |
|
1034 |
// try to pick the oldest voice on the key where the new |
1035 |
// voice should be spawned, if there is no voice on that |
1036 |
// key, or no voice left to kill, then procceed with |
1037 |
// 'oldestkey' algorithm |
1038 |
case voice_steal_algo_oldestvoiceonkey: { |
1039 |
midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key]; |
1040 |
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
1041 |
// proceed iterating if voice was created in this fragment cycle |
1042 |
while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice; |
1043 |
// if we haven't found a voice then proceed with algorithm 'oldestkey' |
1044 |
if (itSelectedVoice && itSelectedVoice->IsStealable()) break; |
1045 |
} // no break - intentional ! |
1046 |
|
1047 |
// try to pick the oldest voice on the oldest active key |
1048 |
// from the same engine channel |
1049 |
// (caution: must stay after 'oldestvoiceonkey' algorithm !) |
1050 |
case voice_steal_algo_oldestkey: { |
1051 |
// if we already stole in this fragment, try to proceed on same key |
1052 |
if (this->itLastStolenVoice) { |
1053 |
itSelectedVoice = this->itLastStolenVoice; |
1054 |
do { |
1055 |
++itSelectedVoice; |
1056 |
} while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle |
1057 |
// found a "stealable" voice ? |
1058 |
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
1059 |
// remember which voice we stole, so we can simply proceed on next voice stealing |
1060 |
this->itLastStolenVoice = itSelectedVoice; |
1061 |
break; // selection succeeded |
1062 |
} |
1063 |
} |
1064 |
// get (next) oldest key |
1065 |
RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKey) ? ++this->iuiLastStolenKey : pEngineChannel->pActiveKeys->first(); |
1066 |
while (iuiSelectedKey) { |
1067 |
midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey]; |
1068 |
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
1069 |
// proceed iterating if voice was created in this fragment cycle |
1070 |
while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice; |
1071 |
// found a "stealable" voice ? |
1072 |
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
1073 |
// remember which voice on which key we stole, so we can simply proceed on next voice stealing |
1074 |
this->iuiLastStolenKey = iuiSelectedKey; |
1075 |
this->itLastStolenVoice = itSelectedVoice; |
1076 |
break; // selection succeeded |
1077 |
} |
1078 |
++iuiSelectedKey; // get next oldest key |
1079 |
} |
1080 |
break; |
1081 |
} |
1082 |
|
1083 |
// don't steal anything |
1084 |
case voice_steal_algo_none: |
1085 |
default: { |
1086 |
dmsg(1,("No free voice (voice stealing disabled)!\n")); |
1087 |
return -1; |
1088 |
} |
1089 |
} |
1090 |
|
1091 |
// if we couldn't steal a voice from the same engine channel then |
1092 |
// steal oldest voice on the oldest key from any other engine channel |
1093 |
// (the smaller engine channel number, the higher priority) |
1094 |
if (!itSelectedVoice || !itSelectedVoice->IsStealable()) { |
1095 |
EngineChannel* pSelectedChannel; |
1096 |
int iChannelIndex; |
1097 |
// select engine channel |
1098 |
if (pLastStolenChannel) { |
1099 |
pSelectedChannel = pLastStolenChannel; |
1100 |
iChannelIndex = pSelectedChannel->iEngineIndexSelf; |
1101 |
} else { // pick the engine channel followed by this engine channel |
1102 |
iChannelIndex = (pEngineChannel->iEngineIndexSelf + 1) % engineChannels.size(); |
1103 |
pSelectedChannel = engineChannels[iChannelIndex]; |
1104 |
} |
1105 |
|
1106 |
// if we already stole in this fragment, try to proceed on same key |
1107 |
if (this->itLastStolenVoiceGlobally) { |
1108 |
itSelectedVoice = this->itLastStolenVoiceGlobally; |
1109 |
do { |
1110 |
++itSelectedVoice; |
1111 |
} while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle |
1112 |
} |
1113 |
|
1114 |
#if CONFIG_DEVMODE |
1115 |
EngineChannel* pBegin = pSelectedChannel; // to detect endless loop |
1116 |
#endif // CONFIG_DEVMODE |
1117 |
|
1118 |
// did we find a 'stealable' voice? |
1119 |
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
1120 |
// remember which voice we stole, so we can simply proceed on next voice stealing |
1121 |
this->itLastStolenVoiceGlobally = itSelectedVoice; |
1122 |
} else while (true) { // iterate through engine channels |
1123 |
// get (next) oldest key |
1124 |
RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKeyGlobally) ? ++this->iuiLastStolenKeyGlobally : pSelectedChannel->pActiveKeys->first(); |
1125 |
this->iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); // to prevent endless loop (see line above) |
1126 |
while (iuiSelectedKey) { |
1127 |
midi_key_info_t* pSelectedKey = &pSelectedChannel->pMIDIKeyInfo[*iuiSelectedKey]; |
1128 |
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
1129 |
// proceed iterating if voice was created in this fragment cycle |
1130 |
while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice; |
1131 |
// found a "stealable" voice ? |
1132 |
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
1133 |
// remember which voice on which key on which engine channel we stole, so we can simply proceed on next voice stealing |
1134 |
this->iuiLastStolenKeyGlobally = iuiSelectedKey; |
1135 |
this->itLastStolenVoiceGlobally = itSelectedVoice; |
1136 |
this->pLastStolenChannel = pSelectedChannel; |
1137 |
goto stealable_voice_found; // selection succeeded |
1138 |
} |
1139 |
++iuiSelectedKey; // get next key on current engine channel |
1140 |
} |
1141 |
// get next engine channel |
1142 |
iChannelIndex = (iChannelIndex + 1) % engineChannels.size(); |
1143 |
pSelectedChannel = engineChannels[iChannelIndex]; |
1144 |
|
1145 |
#if CONFIG_DEVMODE |
1146 |
if (pSelectedChannel == pBegin) { |
1147 |
dmsg(1,("FATAL ERROR: voice stealing endless loop!\n")); |
1148 |
dmsg(1,("VoiceSpawnsLeft=%d.\n", VoiceSpawnsLeft)); |
1149 |
dmsg(1,("Exiting.\n")); |
1150 |
exit(-1); |
1151 |
} |
1152 |
#endif // CONFIG_DEVMODE |
1153 |
} |
1154 |
} |
1155 |
|
1156 |
// jump point if a 'stealable' voice was found |
1157 |
stealable_voice_found: |
1158 |
|
1159 |
#if CONFIG_DEVMODE |
1160 |
if (!itSelectedVoice->IsActive()) { |
1161 |
dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n")); |
1162 |
return -1; |
1163 |
} |
1164 |
#endif // CONFIG_DEVMODE |
1165 |
|
1166 |
// now kill the selected voice |
1167 |
itSelectedVoice->Kill(itNoteOnEvent); |
1168 |
|
1169 |
--VoiceSpawnsLeft; |
1170 |
|
1171 |
return 0; // success |
1172 |
} |
1173 |
else { |
1174 |
dmsg(1,("Event pool emtpy!\n")); |
1175 |
return -1; |
1176 |
} |
1177 |
} |
1178 |
|
1179 |
/** |
1180 |
* Removes the given voice from the MIDI key's list of active voices. |
1181 |
* This method will be called when a voice went inactive, e.g. because |
1182 |
* it finished to playback its sample, finished its release stage or |
1183 |
* just was killed. |
1184 |
* |
1185 |
* @param pEngineChannel - engine channel on which this event occured on |
1186 |
* @param itVoice - points to the voice to be freed |
1187 |
*/ |
1188 |
void Engine::FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice) { |
1189 |
if (itVoice) { |
1190 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoice->MIDIKey]; |
1191 |
|
1192 |
uint keygroup = itVoice->KeyGroup; |
1193 |
|
1194 |
// free the voice object |
1195 |
pVoicePool->free(itVoice); |
1196 |
|
1197 |
// if no other voices left and member of a key group, remove from key group |
1198 |
if (pKey->pActiveVoices->isEmpty() && keygroup) { |
1199 |
uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[keygroup]; |
1200 |
if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group |
1201 |
} |
1202 |
} |
1203 |
else std::cerr << "Couldn't release voice! (!itVoice)\n" << std::flush; |
1204 |
} |
1205 |
|
1206 |
/** |
1207 |
* Called when there's no more voice left on a key, this call will |
1208 |
* update the key info respectively. |
1209 |
* |
1210 |
* @param pEngineChannel - engine channel on which this event occured on |
1211 |
* @param pKey - key which is now inactive |
1212 |
*/ |
1213 |
void Engine::FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey) { |
1214 |
if (pKey->pActiveVoices->isEmpty()) { |
1215 |
pKey->Active = false; |
1216 |
pEngineChannel->pActiveKeys->free(pKey->itSelf); // remove key from list of active keys |
1217 |
pKey->itSelf = RTList<uint>::Iterator(); |
1218 |
pKey->ReleaseTrigger = false; |
1219 |
pKey->pEvents->clear(); |
1220 |
dmsg(3,("Key has no more voices now\n")); |
1221 |
} |
1222 |
else dmsg(1,("gig::Engine: Oops, tried to free a key which contains voices.\n")); |
1223 |
} |
1224 |
|
1225 |
/** |
1226 |
* Reacts on supported control change commands (e.g. pitch bend wheel, |
1227 |
* modulation wheel, aftertouch). |
1228 |
* |
1229 |
* @param pEngineChannel - engine channel on which this event occured on |
1230 |
* @param itControlChangeEvent - controller, value and time stamp of the event |
1231 |
*/ |
1232 |
void Engine::ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent) { |
1233 |
dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value)); |
1234 |
|
1235 |
// update controller value in the engine channel's controller table |
1236 |
pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value; |
1237 |
|
1238 |
switch (itControlChangeEvent->Param.CC.Controller) { |
1239 |
case 5: { // portamento time |
1240 |
pEngineChannel->PortamentoTime = (float) itControlChangeEvent->Param.CC.Value / 127.0f * (float) CONFIG_PORTAMENTO_TIME_MAX + (float) CONFIG_PORTAMENTO_TIME_MIN; |
1241 |
break; |
1242 |
} |
1243 |
case 7: { // volume |
1244 |
//TODO: not sample accurate yet |
1245 |
pEngineChannel->GlobalVolume = VolumeCurve[itControlChangeEvent->Param.CC.Value] * CONFIG_GLOBAL_ATTENUATION; |
1246 |
pEngineChannel->bStatusChanged = true; // engine channel status has changed, so set notify flag |
1247 |
break; |
1248 |
} |
1249 |
case 10: { // panpot |
1250 |
//TODO: not sample accurate yet |
1251 |
pEngineChannel->GlobalPanLeft = PanCurve[128 - itControlChangeEvent->Param.CC.Value]; |
1252 |
pEngineChannel->GlobalPanRight = PanCurve[itControlChangeEvent->Param.CC.Value]; |
1253 |
break; |
1254 |
} |
1255 |
case 64: { // sustain |
1256 |
if (itControlChangeEvent->Param.CC.Value >= 64 && !pEngineChannel->SustainPedal) { |
1257 |
dmsg(4,("DAMPER (RIGHT) PEDAL DOWN\n")); |
1258 |
pEngineChannel->SustainPedal = true; |
1259 |
|
1260 |
#if !CONFIG_PROCESS_MUTED_CHANNELS |
1261 |
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
1262 |
#endif |
1263 |
|
1264 |
// cancel release process of voices if necessary |
1265 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1266 |
for (; iuiKey; ++iuiKey) { |
1267 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1268 |
if (!pKey->KeyPressed) { |
1269 |
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
1270 |
if (itNewEvent) { |
1271 |
*itNewEvent = *itControlChangeEvent; // copy event to the key's own event list |
1272 |
itNewEvent->Type = Event::type_cancel_release; // transform event type |
1273 |
} |
1274 |
else dmsg(1,("Event pool emtpy!\n")); |
1275 |
} |
1276 |
} |
1277 |
} |
1278 |
if (itControlChangeEvent->Param.CC.Value < 64 && pEngineChannel->SustainPedal) { |
1279 |
dmsg(4,("DAMPER (RIGHT) PEDAL UP\n")); |
1280 |
pEngineChannel->SustainPedal = false; |
1281 |
|
1282 |
#if !CONFIG_PROCESS_MUTED_CHANNELS |
1283 |
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
1284 |
#endif |
1285 |
|
1286 |
// release voices if their respective key is not pressed |
1287 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1288 |
for (; iuiKey; ++iuiKey) { |
1289 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1290 |
if (!pKey->KeyPressed && ShouldReleaseVoice(pEngineChannel, *iuiKey)) { |
1291 |
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
1292 |
if (itNewEvent) { |
1293 |
*itNewEvent = *itControlChangeEvent; // copy event to the key's own event list |
1294 |
itNewEvent->Type = Event::type_release; // transform event type |
1295 |
} |
1296 |
else dmsg(1,("Event pool emtpy!\n")); |
1297 |
} |
1298 |
} |
1299 |
} |
1300 |
break; |
1301 |
} |
1302 |
case 65: { // portamento on / off |
1303 |
KillAllVoices(pEngineChannel, itControlChangeEvent); |
1304 |
pEngineChannel->PortamentoMode = itControlChangeEvent->Param.CC.Value >= 64; |
1305 |
break; |
1306 |
} |
1307 |
case 66: { // sostenuto |
1308 |
if (itControlChangeEvent->Param.CC.Value >= 64 && !pEngineChannel->SostenutoPedal) { |
1309 |
dmsg(4,("SOSTENUTO (CENTER) PEDAL DOWN\n")); |
1310 |
pEngineChannel->SostenutoPedal = true; |
1311 |
|
1312 |
#if !CONFIG_PROCESS_MUTED_CHANNELS |
1313 |
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
1314 |
#endif |
1315 |
|
1316 |
SostenutoKeyCount = 0; |
1317 |
// Remeber the pressed keys |
1318 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1319 |
for (; iuiKey; ++iuiKey) { |
1320 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1321 |
if (pKey->KeyPressed && SostenutoKeyCount < 128) SostenutoKeys[SostenutoKeyCount++] = *iuiKey; |
1322 |
} |
1323 |
} |
1324 |
if (itControlChangeEvent->Param.CC.Value < 64 && pEngineChannel->SostenutoPedal) { |
1325 |
dmsg(4,("SOSTENUTO (CENTER) PEDAL UP\n")); |
1326 |
pEngineChannel->SostenutoPedal = false; |
1327 |
|
1328 |
#if !CONFIG_PROCESS_MUTED_CHANNELS |
1329 |
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
1330 |
#endif |
1331 |
|
1332 |
// release voices if the damper pedal is up and their respective key is not pressed |
1333 |
for (int i = 0; i < SostenutoKeyCount; i++) { |
1334 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[SostenutoKeys[i]]; |
1335 |
if (!pKey->KeyPressed && !pEngineChannel->SustainPedal) { |
1336 |
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
1337 |
if (itNewEvent) { |
1338 |
*itNewEvent = *itControlChangeEvent; // copy event to the key's own event list |
1339 |
itNewEvent->Type = Event::type_release; // transform event type |
1340 |
} |
1341 |
else dmsg(1,("Event pool emtpy!\n")); |
1342 |
} |
1343 |
} |
1344 |
} |
1345 |
break; |
1346 |
} |
1347 |
|
1348 |
|
1349 |
// Channel Mode Messages |
1350 |
|
1351 |
case 120: { // all sound off |
1352 |
KillAllVoices(pEngineChannel, itControlChangeEvent); |
1353 |
break; |
1354 |
} |
1355 |
case 121: { // reset all controllers |
1356 |
pEngineChannel->ResetControllers(); |
1357 |
break; |
1358 |
} |
1359 |
case 123: { // all notes off |
1360 |
#if CONFIG_PROCESS_ALL_NOTES_OFF |
1361 |
ReleaseAllVoices(pEngineChannel, itControlChangeEvent); |
1362 |
#endif // CONFIG_PROCESS_ALL_NOTES_OFF |
1363 |
break; |
1364 |
} |
1365 |
case 126: { // mono mode on |
1366 |
KillAllVoices(pEngineChannel, itControlChangeEvent); |
1367 |
pEngineChannel->SoloMode = true; |
1368 |
break; |
1369 |
} |
1370 |
case 127: { // poly mode on |
1371 |
KillAllVoices(pEngineChannel, itControlChangeEvent); |
1372 |
pEngineChannel->SoloMode = false; |
1373 |
break; |
1374 |
} |
1375 |
} |
1376 |
} |
1377 |
|
1378 |
/** |
1379 |
* Reacts on MIDI system exclusive messages. |
1380 |
* |
1381 |
* @param itSysexEvent - sysex data size and time stamp of the sysex event |
1382 |
*/ |
1383 |
void Engine::ProcessSysex(Pool<Event>::Iterator& itSysexEvent) { |
1384 |
RingBuffer<uint8_t>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader(); |
1385 |
|
1386 |
uint8_t exclusive_status, id; |
1387 |
if (!reader.pop(&exclusive_status)) goto free_sysex_data; |
1388 |
if (!reader.pop(&id)) goto free_sysex_data; |
1389 |
if (exclusive_status != 0xF0) goto free_sysex_data; |
1390 |
|
1391 |
switch (id) { |
1392 |
case 0x41: { // Roland |
1393 |
dmsg(3,("Roland Sysex\n")); |
1394 |
uint8_t device_id, model_id, cmd_id; |
1395 |
if (!reader.pop(&device_id)) goto free_sysex_data; |
1396 |
if (!reader.pop(&model_id)) goto free_sysex_data; |
1397 |
if (!reader.pop(&cmd_id)) goto free_sysex_data; |
1398 |
if (model_id != 0x42 /*GS*/) goto free_sysex_data; |
1399 |
if (cmd_id != 0x12 /*DT1*/) goto free_sysex_data; |
1400 |
|
1401 |
// command address |
1402 |
uint8_t addr[3]; // 2 byte addr MSB, followed by 1 byte addr LSB) |
1403 |
const RingBuffer<uint8_t>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later |
1404 |
if (reader.read(&addr[0], 3) != 3) goto free_sysex_data; |
1405 |
if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters |
1406 |
dmsg(3,("\tSystem Parameter\n")); |
1407 |
} |
1408 |
else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters |
1409 |
dmsg(3,("\tCommon Parameter\n")); |
1410 |
} |
1411 |
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1) |
1412 |
dmsg(3,("\tPart Parameter\n")); |
1413 |
switch (addr[2]) { |
1414 |
case 0x40: { // scale tuning |
1415 |
dmsg(3,("\t\tScale Tuning\n")); |
1416 |
uint8_t scale_tunes[12]; // detuning of all 12 semitones of an octave |
1417 |
if (reader.read(&scale_tunes[0], 12) != 12) goto free_sysex_data; |
1418 |
uint8_t checksum; |
1419 |
if (!reader.pop(&checksum)) goto free_sysex_data; |
1420 |
#if CONFIG_ASSERT_GS_SYSEX_CHECKSUM |
1421 |
if (GSCheckSum(checksum_reader, 12)) goto free_sysex_data; |
1422 |
#endif // CONFIG_ASSERT_GS_SYSEX_CHECKSUM |
1423 |
for (int i = 0; i < 12; i++) scale_tunes[i] -= 64; |
1424 |
AdjustScale((int8_t*) scale_tunes); |
1425 |
dmsg(3,("\t\t\tNew scale applied.\n")); |
1426 |
break; |
1427 |
} |
1428 |
} |
1429 |
} |
1430 |
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2) |
1431 |
} |
1432 |
else if (addr[0] == 0x41) { // Drum Setup Parameters |
1433 |
} |
1434 |
break; |
1435 |
} |
1436 |
} |
1437 |
|
1438 |
free_sysex_data: // finally free sysex data |
1439 |
pSysexBuffer->increment_read_ptr(itSysexEvent->Param.Sysex.Size); |
1440 |
} |
1441 |
|
1442 |
/** |
1443 |
* Calculates the Roland GS sysex check sum. |
1444 |
* |
1445 |
* @param AddrReader - reader which currently points to the first GS |
1446 |
* command address byte of the GS sysex message in |
1447 |
* question |
1448 |
* @param DataSize - size of the GS message data (in bytes) |
1449 |
*/ |
1450 |
uint8_t Engine::GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize) { |
1451 |
RingBuffer<uint8_t>::NonVolatileReader reader = AddrReader; |
1452 |
uint bytes = 3 /*addr*/ + DataSize; |
1453 |
uint8_t addr_and_data[bytes]; |
1454 |
reader.read(&addr_and_data[0], bytes); |
1455 |
uint8_t sum = 0; |
1456 |
for (uint i = 0; i < bytes; i++) sum += addr_and_data[i]; |
1457 |
return 128 - sum % 128; |
1458 |
} |
1459 |
|
1460 |
/** |
1461 |
* Allows to tune each of the twelve semitones of an octave. |
1462 |
* |
1463 |
* @param ScaleTunes - detuning of all twelve semitones (in cents) |
1464 |
*/ |
1465 |
void Engine::AdjustScale(int8_t ScaleTunes[12]) { |
1466 |
memcpy(&this->ScaleTuning[0], &ScaleTunes[0], 12); //TODO: currently not sample accurate |
1467 |
} |
1468 |
|
1469 |
/** |
1470 |
* Releases all voices on an engine channel. All voices will go into |
1471 |
* the release stage and thus it might take some time (e.g. dependant to |
1472 |
* their envelope release time) until they actually die. |
1473 |
* |
1474 |
* @param pEngineChannel - engine channel on which all voices should be released |
1475 |
* @param itReleaseEvent - event which caused this releasing of all voices |
1476 |
*/ |
1477 |
void Engine::ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent) { |
1478 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1479 |
while (iuiKey) { |
1480 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1481 |
++iuiKey; |
1482 |
// append a 'release' event to the key's own event list |
1483 |
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
1484 |
if (itNewEvent) { |
1485 |
*itNewEvent = *itReleaseEvent; // copy original event (to the key's event list) |
1486 |
itNewEvent->Type = Event::type_release; // transform event type |
1487 |
} |
1488 |
else dmsg(1,("Event pool emtpy!\n")); |
1489 |
} |
1490 |
} |
1491 |
|
1492 |
/** |
1493 |
* Kills all voices on an engine channel as soon as possible. Voices |
1494 |
* won't get into release state, their volume level will be ramped down |
1495 |
* as fast as possible. |
1496 |
* |
1497 |
* @param pEngineChannel - engine channel on which all voices should be killed |
1498 |
* @param itKillEvent - event which caused this killing of all voices |
1499 |
*/ |
1500 |
void Engine::KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent) { |
1501 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1502 |
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
1503 |
while (iuiKey != end) { // iterate through all active keys |
1504 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1505 |
++iuiKey; |
1506 |
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
1507 |
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
1508 |
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
1509 |
itVoice->Kill(itKillEvent); |
1510 |
--VoiceSpawnsLeft; //FIXME: just a temporary workaround, we should check the cause in StealVoice() instead |
1511 |
} |
1512 |
} |
1513 |
} |
1514 |
|
1515 |
/** |
1516 |
* Determines whether the specified voice should be released. |
1517 |
* |
1518 |
* @param pEngineChannel - The engine channel on which the voice should be checked |
1519 |
* @param Key - The key number |
1520 |
* @returns true if the specified should be released, false otherwise. |
1521 |
*/ |
1522 |
bool Engine::ShouldReleaseVoice(EngineChannel* pEngineChannel, int Key) { |
1523 |
if (pEngineChannel->SustainPedal) return false; |
1524 |
|
1525 |
if (pEngineChannel->SostenutoPedal) { |
1526 |
for (int i = 0; i < SostenutoKeyCount; i++) |
1527 |
if (Key == SostenutoKeys[i]) return false; |
1528 |
} |
1529 |
|
1530 |
return true; |
1531 |
} |
1532 |
|
1533 |
uint Engine::VoiceCount() { |
1534 |
return ActiveVoiceCount; |
1535 |
} |
1536 |
|
1537 |
uint Engine::VoiceCountMax() { |
1538 |
return ActiveVoiceCountMax; |
1539 |
} |
1540 |
|
1541 |
bool Engine::DiskStreamSupported() { |
1542 |
return true; |
1543 |
} |
1544 |
|
1545 |
uint Engine::DiskStreamCount() { |
1546 |
return (pDiskThread) ? pDiskThread->ActiveStreamCount : 0; |
1547 |
} |
1548 |
|
1549 |
uint Engine::DiskStreamCountMax() { |
1550 |
return (pDiskThread) ? pDiskThread->ActiveStreamCountMax : 0; |
1551 |
} |
1552 |
|
1553 |
String Engine::DiskStreamBufferFillBytes() { |
1554 |
return pDiskThread->GetBufferFillBytes(); |
1555 |
} |
1556 |
|
1557 |
String Engine::DiskStreamBufferFillPercentage() { |
1558 |
return pDiskThread->GetBufferFillPercentage(); |
1559 |
} |
1560 |
|
1561 |
String Engine::EngineName() { |
1562 |
return LS_GIG_ENGINE_NAME; |
1563 |
} |
1564 |
|
1565 |
String Engine::Description() { |
1566 |
return "Gigasampler Engine"; |
1567 |
} |
1568 |
|
1569 |
String Engine::Version() { |
1570 |
String s = "$Revision: 1.63 $"; |
1571 |
return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
1572 |
} |
1573 |
|
1574 |
// static constant initializers |
1575 |
const float* Engine::VolumeCurve(InitVolumeCurve()); |
1576 |
const float* Engine::PanCurve(InitPanCurve()); |
1577 |
const float* Engine::CrossfadeCurve(InitCrossfadeCurve()); |
1578 |
|
1579 |
float* Engine::InitVolumeCurve() { |
1580 |
// line-segment approximation |
1581 |
const float segments[] = { |
1582 |
0, 0, 2, 0.0046, 16, 0.016, 31, 0.051, 45, 0.115, 54.5, 0.2, |
1583 |
64.5, 0.39, 74, 0.74, 92, 1.03, 114, 1.94, 119.2, 2.2, 127, 2.2 |
1584 |
}; |
1585 |
return InitCurve(segments); |
1586 |
} |
1587 |
|
1588 |
float* Engine::InitPanCurve() { |
1589 |
// line-segment approximation |
1590 |
const float segments[] = { |
1591 |
0, 0, 1, 0, |
1592 |
2, 0.05, 31.5, 0.7, 51, 0.851, 74.5, 1.12, |
1593 |
127, 1.41, 128, 1.41 |
1594 |
}; |
1595 |
return InitCurve(segments, 129); |
1596 |
} |
1597 |
|
1598 |
float* Engine::InitCrossfadeCurve() { |
1599 |
// line-segment approximation |
1600 |
const float segments[] = { |
1601 |
0, 0, 1, 0.03, 10, 0.1, 51, 0.58, 127, 1 |
1602 |
}; |
1603 |
return InitCurve(segments); |
1604 |
} |
1605 |
|
1606 |
float* Engine::InitCurve(const float* segments, int size) { |
1607 |
float* y = new float[size]; |
1608 |
for (int x = 0 ; x < size ; x++) { |
1609 |
if (x > segments[2]) segments += 2; |
1610 |
y[x] = segments[1] + (x - segments[0]) * |
1611 |
(segments[3] - segments[1]) / (segments[2] - segments[0]); |
1612 |
} |
1613 |
return y; |
1614 |
} |
1615 |
|
1616 |
}} // namespace LinuxSampler::gig |