2 |
* * |
* * |
3 |
* LinuxSampler - modular, streaming capable sampler * |
* LinuxSampler - modular, streaming capable sampler * |
4 |
* * |
* * |
5 |
* Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck * |
* Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck * |
6 |
* Copyright (C) 2005-2007 Christian Schoenebeck * |
* Copyright (C) 2005-2009 Christian Schoenebeck * |
7 |
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* Copyright (C) 2009 Grigor Iliev * |
8 |
* * |
* * |
9 |
* This program is free software; you can redistribute it and/or modify * |
* This program is free software; you can redistribute it and/or modify * |
10 |
* it under the terms of the GNU General Public License as published by * |
* it under the terms of the GNU General Public License as published by * |
22 |
* MA 02111-1307 USA * |
* MA 02111-1307 USA * |
23 |
***************************************************************************/ |
***************************************************************************/ |
24 |
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#include <sstream> |
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#include "DiskThread.h" |
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#include "Voice.h" |
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#include "EGADSR.h" |
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#include "../EngineFactory.h" |
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#include "Engine.h" |
#include "Engine.h" |
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#include "EngineChannel.h" |
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namespace LinuxSampler { namespace gig { |
namespace LinuxSampler { namespace gig { |
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Engine::Format Engine::GetEngineFormat() { return GIG; } |
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InstrumentResourceManager Engine::instruments; |
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std::map<AudioOutputDevice*,Engine*> Engine::engines; |
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/** |
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* Get a gig::Engine object for the given gig::EngineChannel and the |
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* given AudioOutputDevice. All engine channels which are connected to |
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* the same audio output device will use the same engine instance. This |
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* method will be called by a gig::EngineChannel whenever it's |
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* connecting to a audio output device. |
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* |
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* @param pChannel - engine channel which acquires an engine object |
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* @param pDevice - the audio output device \a pChannel is connected to |
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*/ |
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Engine* Engine::AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) { |
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Engine* pEngine = NULL; |
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// check if there's already an engine for the given audio output device |
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if (engines.count(pDevice)) { |
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dmsg(4,("Using existing gig::Engine.\n")); |
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pEngine = engines[pDevice]; |
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} else { // create a new engine (and disk thread) instance for the given audio output device |
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dmsg(4,("Creating new gig::Engine.\n")); |
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pEngine = (Engine*) EngineFactory::Create("gig"); |
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pEngine->Connect(pDevice); |
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engines[pDevice] = pEngine; |
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} |
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// register engine channel to the engine instance |
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// Disable the engine while the new engine channel is added |
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// and initialized. The engine will be enabled again in |
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// EngineChannel::Connect. |
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pEngine->DisableAndLock(); |
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pEngine->engineChannels.add(pChannel); |
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// remember index in the ArrayList |
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pChannel->iEngineIndexSelf = pEngine->engineChannels.size() - 1; |
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dmsg(4,("This gig::Engine has now %d EngineChannels.\n",pEngine->engineChannels.size())); |
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return pEngine; |
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} |
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/** |
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* Once an engine channel is disconnected from an audio output device, |
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* it wil immediately call this method to unregister itself from the |
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* engine instance and if that engine instance is not used by any other |
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* engine channel anymore, then that engine instance will be destroyed. |
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* |
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* @param pChannel - engine channel which wants to disconnect from it's |
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* engine instance |
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* @param pDevice - audio output device \a pChannel was connected to |
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*/ |
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void Engine::FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) { |
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dmsg(4,("Disconnecting EngineChannel from gig::Engine.\n")); |
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Engine* pEngine = engines[pDevice]; |
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// unregister EngineChannel from the Engine instance |
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pEngine->engineChannels.remove(pChannel); |
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// if the used Engine instance is not used anymore, then destroy it |
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if (pEngine->engineChannels.empty()) { |
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pDevice->Disconnect(pEngine); |
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engines.erase(pDevice); |
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delete pEngine; |
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dmsg(4,("Destroying gig::Engine.\n")); |
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} |
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else dmsg(4,("This gig::Engine has now %d EngineChannels.\n",pEngine->engineChannels.size())); |
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} |
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/** |
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* Constructor |
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*/ |
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Engine::Engine() { |
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pAudioOutputDevice = NULL; |
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pDiskThread = NULL; |
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pEventGenerator = NULL; |
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pSysexBuffer = new RingBuffer<uint8_t,false>(CONFIG_SYSEX_BUFFER_SIZE, 0); |
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pEventQueue = new RingBuffer<Event,false>(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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pDimRegionsInUse = new ::gig::DimensionRegion*[CONFIG_MAX_VOICES + 1]; |
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pVoiceStealingQueue = new RTList<Event>(pEventPool); |
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pGlobalEvents = new RTList<Event>(pEventPool); |
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InstrumentChangeQueue = new RingBuffer<instrument_change_command_t,false>(1, 0); |
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InstrumentChangeReplyQueue = new RingBuffer<instrument_change_reply_t,false>(1, 0); |
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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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ResetInternal(); |
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ResetScaleTuning(); |
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} |
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/** |
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* Destructor |
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*/ |
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Engine::~Engine() { |
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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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Unregister(); |
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} |
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void Engine::Enable() { |
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dmsg(3,("gig::Engine: enabling\n")); |
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EngineDisabled.PushAndUnlock(false, 2); // set condition object 'EngineDisabled' to false (wait max. 2s) |
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dmsg(3,("gig::Engine: enabled (val=%d)\n", EngineDisabled.GetUnsafe())); |
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} |
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void Engine::Disable() { |
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dmsg(3,("gig::Engine: disabling\n")); |
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bool* pWasDisabled = EngineDisabled.PushAndUnlock(true, 2); // wait max. 2s |
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if (!pWasDisabled) dmsg(3,("gig::Engine warning: Timeout waiting to disable engine.\n")); |
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} |
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void Engine::DisableAndLock() { |
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dmsg(3,("gig::Engine: disabling\n")); |
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bool* pWasDisabled = EngineDisabled.Push(true, 2); // wait max. 2s |
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if (!pWasDisabled) dmsg(3,("gig::Engine warning: Timeout waiting to disable engine.\n")); |
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} |
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/** |
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* Reset all voices and disk thread and clear input event queue and all |
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* control and status variables. |
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*/ |
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void Engine::Reset() { |
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DisableAndLock(); |
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ResetInternal(); |
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ResetScaleTuning(); |
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Enable(); |
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} |
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/** |
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* Reset all voices and disk thread and clear input event queue and all |
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* control and status variables. This method is 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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// 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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// reset voice stealing parameters |
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pVoiceStealingQueue->clear(); |
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itLastStolenVoice = RTList<Voice>::Iterator(); |
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itLastStolenVoiceGlobally = RTList<Voice>::Iterator(); |
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iuiLastStolenKey = RTList<uint>::Iterator(); |
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iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); |
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pLastStolenChannel = NULL; |
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// reset all voices |
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for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
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iterVoice->Reset(); |
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} |
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pVoicePool->clear(); |
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// reset disk thread |
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if (pDiskThread) pDiskThread->Reset(); |
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// delete all input events |
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pEventQueue->init(); |
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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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* 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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30 |
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/** |
/** |
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* Connect this engine instance with the given audio output device. |
* Reacts on supported control change commands (e.g. pitch bend wheel, |
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* This method will be called when an Engine instance is created. |
* modulation wheel, aftertouch). |
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* All of the engine's data structures which are dependant to the used |
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* audio output device / driver will be (re)allocated and / or |
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* adjusted appropriately. |
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* |
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* @param pAudioOut - audio output device to connect to |
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*/ |
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void Engine::Connect(AudioOutputDevice* pAudioOut) { |
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pAudioOutputDevice = pAudioOut; |
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ResetInternal(); |
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// inform audio driver for the need of two channels |
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try { |
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pAudioOutputDevice->AcquireChannels(2); // gig engine only stereo |
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} |
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catch (AudioOutputException e) { |
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String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message(); |
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throw Exception(msg); |
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} |
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this->MaxSamplesPerCycle = pAudioOutputDevice->MaxSamplesPerCycle(); |
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this->SampleRate = pAudioOutputDevice->SampleRate(); |
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// FIXME: audio drivers with varying fragment sizes might be a problem here |
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MaxFadeOutPos = MaxSamplesPerCycle - int(double(SampleRate) * CONFIG_EG_MIN_RELEASE_TIME) - 1; |
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if (MaxFadeOutPos < 0) { |
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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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// (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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&instruments); |
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if (!pDiskThread) { |
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dmsg(0,("gig::Engine new diskthread = NULL\n")); |
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exit(EXIT_FAILURE); |
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} |
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for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
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iterVoice->pDiskThread = this->pDiskThread; |
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dmsg(3,("d")); |
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} |
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pVoicePool->clear(); |
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// (re)create event generator |
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if (pEventGenerator) delete pEventGenerator; |
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pEventGenerator = new EventGenerator(pAudioOut->SampleRate()); |
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dmsg(1,("Starting disk thread...")); |
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pDiskThread->StartThread(); |
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dmsg(1,("OK\n")); |
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for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
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if (!iterVoice->pDiskThread) { |
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dmsg(0,("Engine -> voice::trigger: !pDiskThread\n")); |
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exit(EXIT_FAILURE); |
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} |
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} |
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} |
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/** |
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* Clear all engine global event lists. |
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*/ |
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void Engine::ClearEventLists() { |
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pGlobalEvents->clear(); |
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} |
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/** |
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* Copy all events from the engine's global input queue buffer to the |
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* engine's internal event list. This will be done at the beginning of |
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* each audio cycle (that is each RenderAudio() call) to distinguish |
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* all global events which have to be processed in the current audio |
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* cycle. These events are usually just SysEx messages. Every |
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* EngineChannel has it's own input event queue buffer and event list |
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* to handle common events like NoteOn, NoteOff and ControlChange |
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* events. |
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* |
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* @param Samples - number of sample points to be processed in the |
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* current audio cycle |
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*/ |
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void Engine::ImportEvents(uint Samples) { |
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RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader(); |
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Event* pEvent; |
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while (true) { |
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// get next event from input event queue |
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if (!(pEvent = eventQueueReader.pop())) break; |
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// if younger event reached, ignore that and all subsequent ones for now |
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if (pEvent->FragmentPos() >= Samples) { |
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eventQueueReader--; |
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dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples)); |
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pEvent->ResetFragmentPos(); |
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break; |
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} |
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// copy event to internal event list |
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if (pGlobalEvents->poolIsEmpty()) { |
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dmsg(1,("Event pool emtpy!\n")); |
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break; |
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} |
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*pGlobalEvents->allocAppend() = *pEvent; |
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} |
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eventQueueReader.free(); // free all copied events from input queue |
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} |
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/** |
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* Let this engine proceed to render the given amount of sample points. |
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* The engine will iterate through all engine channels and render audio |
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* for each engine channel independently. The calculated audio data of |
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* all voices of each engine channel will be placed into the audio sum |
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* buffers of the respective audio output device, connected to the |
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* respective engine channel. |
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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(7,("RenderAudio(Samples=%d)\n", Samples)); |
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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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// 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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// 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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// 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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// 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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// reset internal voice counter (just for statistic of active voices) |
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ActiveVoiceCountTemp = 0; |
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// handle instrument change commands |
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instrument_change_command_t command; |
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if (InstrumentChangeQueue->pop(&command) > 0) { |
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EngineChannel* pEngineChannel = command.pEngineChannel; |
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pEngineChannel->pInstrument = command.pInstrument; |
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// iterate through all active voices and mark their |
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// dimension regions as "in use". The instrument resource |
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// manager may delete all of the instrument except the |
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// dimension regions and samples that are in use. |
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int i = 0; |
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RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
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RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
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while (iuiKey != end) { // iterate through all active keys |
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midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
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++iuiKey; |
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RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
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RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
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for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
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if (!itVoice->Orphan) { |
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itVoice->Orphan = true; |
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pDimRegionsInUse[i++] = itVoice->pDimRgn; |
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} |
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} |
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} |
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pDimRegionsInUse[i] = 0; // end of list |
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// send a reply to the calling thread, which is waiting |
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instrument_change_reply_t reply; |
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InstrumentChangeReplyQueue->push(&reply); |
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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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ProcessEvents(engineChannels[i], Samples); |
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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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RenderActiveVoices(engineChannels[i], Samples); |
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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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// handle audio routing for engine channels with FX sends |
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for (int i = 0; i < engineChannels.size(); i++) { |
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if (engineChannels[i]->fxSends.empty()) continue; // ignore if no FX sends |
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RouteAudio(engineChannels[i], 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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PostProcess(engineChannels[i]); |
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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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// reset voice stealing for the next audio fragment |
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pVoiceStealingQueue->clear(); |
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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; |
|
|
|
|
|
FrameTime += Samples; |
|
|
|
|
|
return 0; |
|
|
} |
|
|
|
|
|
/** |
|
|
* Dispatch and handle all events in this audio fragment for the given |
|
|
* engine channel. |
|
|
* |
|
|
* @param pEngineChannel - engine channel on which events should be |
|
|
* processed |
|
|
* @param Samples - amount of sample points to be processed in |
|
|
* this audio fragment cycle |
|
|
*/ |
|
|
void Engine::ProcessEvents(EngineChannel* pEngineChannel, uint Samples) { |
|
|
// get all events from the engine channels's input event queue which belong to the current fragment |
|
|
// (these are the common events like NoteOn, NoteOff, ControlChange, etc.) |
|
|
pEngineChannel->ImportEvents(Samples); |
|
|
|
|
|
// process events |
|
|
{ |
|
|
RTList<Event>::Iterator itEvent = pEngineChannel->pEvents->first(); |
|
|
RTList<Event>::Iterator end = pEngineChannel->pEvents->end(); |
|
|
for (; itEvent != end; ++itEvent) { |
|
|
switch (itEvent->Type) { |
|
|
case Event::type_note_on: |
|
|
dmsg(5,("Engine: Note on received\n")); |
|
|
ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent); |
|
|
break; |
|
|
case Event::type_note_off: |
|
|
dmsg(5,("Engine: Note off received\n")); |
|
|
ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent); |
|
|
break; |
|
|
case Event::type_control_change: |
|
|
dmsg(5,("Engine: MIDI CC received\n")); |
|
|
ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent); |
|
|
break; |
|
|
case Event::type_pitchbend: |
|
|
dmsg(5,("Engine: Pitchbend received\n")); |
|
|
ProcessPitchbend((EngineChannel*)itEvent->pEngineChannel, itEvent); |
|
|
break; |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
// reset voice stealing for the next engine channel (or next audio fragment) |
|
|
itLastStolenVoice = RTList<Voice>::Iterator(); |
|
|
itLastStolenVoiceGlobally = RTList<Voice>::Iterator(); |
|
|
iuiLastStolenKey = RTList<uint>::Iterator(); |
|
|
iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); |
|
|
pLastStolenChannel = NULL; |
|
|
} |
|
|
|
|
|
/** |
|
|
* Render all 'normal' voices (that is voices which were not stolen in |
|
|
* this fragment) on the given engine channel. |
|
|
* |
|
|
* @param pEngineChannel - engine channel on which audio should be |
|
|
* rendered |
|
|
* @param Samples - amount of sample points to be rendered in |
|
|
* this audio fragment cycle |
|
|
*/ |
|
|
void Engine::RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples) { |
|
|
#if !CONFIG_PROCESS_MUTED_CHANNELS |
|
|
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
|
|
#endif |
|
|
|
|
|
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
|
|
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
|
|
while (iuiKey != end) { // iterate through all active keys |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
|
|
++iuiKey; |
|
|
|
|
|
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
|
|
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
|
|
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
|
|
// now render current voice |
|
|
itVoice->Render(Samples); |
|
|
if (itVoice->IsActive()) ActiveVoiceCountTemp++; // still active |
|
|
else { // voice reached end, is now inactive |
|
|
FreeVoice(pEngineChannel, itVoice); // remove voice from the list of active voices |
|
|
} |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
/** |
|
|
* Render all stolen voices (only voices which were stolen in this |
|
|
* fragment) on the given engine channel. Stolen voices are rendered |
|
|
* after all normal voices have been rendered; this is needed to render |
|
|
* audio of those voices which were selected for voice stealing until |
|
|
* the point were the stealing (that is the take over of the voice) |
|
|
* actually happened. |
|
34 |
* |
* |
35 |
* @param pEngineChannel - engine channel on which audio should be |
* @param pEngineChannel - engine channel on which this event occured on |
36 |
* rendered |
* @param itControlChangeEvent - controller, value and time stamp of the event |
|
* @param Samples - amount of sample points to be rendered in |
|
|
* this audio fragment cycle |
|
37 |
*/ |
*/ |
38 |
void Engine::RenderStolenVoices(uint Samples) { |
void Engine::ProcessControlChange ( |
39 |
RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first(); |
LinuxSampler::EngineChannel* pEngineChannel, |
40 |
RTList<Event>::Iterator end = pVoiceStealingQueue->end(); |
Pool<Event>::Iterator& itControlChangeEvent |
41 |
for (; itVoiceStealEvent != end; ++itVoiceStealEvent) { |
) { |
42 |
EngineChannel* pEngineChannel = (EngineChannel*) itVoiceStealEvent->pEngineChannel; |
dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value)); |
|
if (!pEngineChannel->pInstrument) continue; // ignore if no instrument loaded |
|
|
Pool<Voice>::Iterator itNewVoice = |
|
|
LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false, false); |
|
|
if (itNewVoice) { |
|
|
itNewVoice->Render(Samples); |
|
|
if (itNewVoice->IsActive()) ActiveVoiceCountTemp++; // still active |
|
|
else { // voice reached end, is now inactive |
|
|
FreeVoice(pEngineChannel, itNewVoice); // remove voice from the list of active voices |
|
|
} |
|
|
} |
|
|
else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n")); |
|
|
|
|
|
// we need to clear the key's event list explicitly here in case key was never active |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoiceStealEvent->Param.Note.Key]; |
|
|
pKey->VoiceTheftsQueued--; |
|
|
if (!pKey->Active && !pKey->VoiceTheftsQueued) pKey->pEvents->clear(); |
|
|
} |
|
|
} |
|
43 |
|
|
44 |
/** |
EngineChannel* pChannel = dynamic_cast<EngineChannel*>(pEngineChannel); |
45 |
* Will be called in case the respective engine channel sports FX send |
// handle the "control triggered" MIDI rule: a control change |
46 |
* channels. In this particular case, engine channel local buffers are |
// event can trigger a new note on or note off event |
47 |
* used to render and mix all voices to. This method is responsible for |
if (pChannel->pInstrument) { |
48 |
* copying the audio data from those local buffers to the master audio |
|
49 |
* output channels as well as to the FX send audio output channels with |
::gig::MidiRule* rule; |
50 |
* their respective FX send levels. |
for (int i = 0 ; (rule = pChannel->pInstrument->GetMidiRule(i)) ; i++) { |
51 |
* |
|
52 |
* @param pEngineChannel - engine channel from which audio should be |
if (::gig::MidiRuleCtrlTrigger* ctrlTrigger = |
53 |
* routed |
dynamic_cast< ::gig::MidiRuleCtrlTrigger*>(rule)) { |
54 |
* @param Samples - amount of sample points to be routed in |
if (itControlChangeEvent->Param.CC.Controller == |
55 |
* this audio fragment cycle |
ctrlTrigger->ControllerNumber) { |
56 |
*/ |
|
57 |
void Engine::RouteAudio(EngineChannel* pEngineChannel, uint Samples) { |
uint8_t oldCCValue = pChannel->ControllerTable[ |
58 |
// route master signal |
itControlChangeEvent->Param.CC.Controller]; |
59 |
{ |
uint8_t newCCValue = itControlChangeEvent->Param.CC.Value; |
60 |
AudioChannel* pDstL = pAudioOutputDevice->Channel(pEngineChannel->AudioDeviceChannelLeft); |
|
61 |
AudioChannel* pDstR = pAudioOutputDevice->Channel(pEngineChannel->AudioDeviceChannelRight); |
for (int i = 0 ; i < ctrlTrigger->Triggers ; i++) { |
62 |
pEngineChannel->pChannelLeft->MixTo(pDstL, Samples); |
::gig::MidiRuleCtrlTrigger::trigger_t* pTrigger = |
63 |
pEngineChannel->pChannelRight->MixTo(pDstR, Samples); |
&ctrlTrigger->pTriggers[i]; |
64 |
} |
|
65 |
// route FX send signal |
// check if the controller has passed the |
66 |
{ |
// trigger point in the right direction |
67 |
for (int iFxSend = 0; iFxSend < pEngineChannel->GetFxSendCount(); iFxSend++) { |
if ((pTrigger->Descending && |
68 |
FxSend* pFxSend = pEngineChannel->GetFxSend(iFxSend); |
oldCCValue > pTrigger->TriggerPoint && |
69 |
// left channel |
newCCValue <= pTrigger->TriggerPoint) || |
70 |
const int iDstL = pFxSend->DestinationChannel(0); |
(!pTrigger->Descending && |
71 |
if (iDstL < 0) { |
oldCCValue < pTrigger->TriggerPoint && |
72 |
dmsg(1,("Engine::RouteAudio() Error: invalid FX send (L) destination channel")); |
newCCValue >= pTrigger->TriggerPoint)) { |
73 |
} else { |
|
74 |
AudioChannel* pDstL = pAudioOutputDevice->Channel(iDstL); |
RTList<Event>::Iterator itNewEvent = pGlobalEvents->allocAppend(); |
75 |
if (!pDstL) { |
if (itNewEvent) { |
76 |
dmsg(1,("Engine::RouteAudio() Error: invalid FX send (L) destination channel")); |
*itNewEvent = *itControlChangeEvent; |
77 |
} else pEngineChannel->pChannelLeft->MixTo(pDstL, Samples, pFxSend->Level()); |
itNewEvent->Param.Note.Key = pTrigger->Key; |
78 |
} |
|
79 |
// right channel |
if (pTrigger->NoteOff || pTrigger->Velocity == 0) { |
80 |
const int iDstR = pFxSend->DestinationChannel(1); |
itNewEvent->Type = Event::type_note_off; |
81 |
if (iDstR < 0) { |
itNewEvent->Param.Note.Velocity = 100; |
82 |
dmsg(1,("Engine::RouteAudio() Error: invalid FX send (R) destination channel")); |
|
83 |
} else { |
ProcessNoteOff(pEngineChannel, itNewEvent); |
84 |
AudioChannel* pDstR = pAudioOutputDevice->Channel(iDstR); |
} else { |
85 |
if (!pDstR) { |
itNewEvent->Type = Event::type_note_on; |
86 |
dmsg(1,("Engine::RouteAudio() Error: invalid FX send (R) destination channel")); |
//TODO: if Velocity is 255, the triggered velocity should |
87 |
} else pEngineChannel->pChannelRight->MixTo(pDstR, Samples, pFxSend->Level()); |
// depend on how fast the controller is moving |
88 |
} |
itNewEvent->Param.Note.Velocity = |
89 |
} |
pTrigger->Velocity == 255 ? 100 : |
90 |
} |
pTrigger->Velocity; |
|
// reset buffers with silence (zero out) for the next audio cycle |
|
|
pEngineChannel->pChannelLeft->Clear(); |
|
|
pEngineChannel->pChannelRight->Clear(); |
|
|
} |
|
91 |
|
|
92 |
/** |
ProcessNoteOn(pEngineChannel, itNewEvent); |
93 |
* Free all keys which have turned inactive in this audio fragment, from |
} |
94 |
* the list of active keys and clear all event lists on that engine |
} |
95 |
* channel. |
else dmsg(1,("Event pool emtpy!\n")); |
96 |
* |
} |
|
* @param pEngineChannel - engine channel to cleanup |
|
|
*/ |
|
|
void Engine::PostProcess(EngineChannel* pEngineChannel) { |
|
|
// free all keys which have no active voices left |
|
|
{ |
|
|
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
|
|
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
|
|
while (iuiKey != end) { // iterate through all active keys |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
|
|
++iuiKey; |
|
|
if (pKey->pActiveVoices->isEmpty()) FreeKey(pEngineChannel, pKey); |
|
|
#if CONFIG_DEVMODE |
|
|
else { // just a sanity check for debugging |
|
|
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
|
|
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
|
|
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
|
|
if (itVoice->itKillEvent) { |
|
|
dmsg(1,("gig::Engine: ERROR, killed voice survived !!!\n")); |
|
97 |
} |
} |
98 |
} |
} |
99 |
} |
} |
|
#endif // CONFIG_DEVMODE |
|
100 |
} |
} |
101 |
} |
} |
102 |
|
|
103 |
// empty the engine channel's own event lists |
// update controller value in the engine channel's controller table |
104 |
pEngineChannel->ClearEventLists(); |
pChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value; |
|
} |
|
105 |
|
|
106 |
/** |
ProcessHardcodedControllers(pEngineChannel, itControlChangeEvent); |
|
* Will be called by the MIDI input device whenever a MIDI system |
|
|
* exclusive message has arrived. |
|
|
* |
|
|
* @param pData - pointer to sysex data |
|
|
* @param Size - lenght of sysex data (in bytes) |
|
|
*/ |
|
|
void Engine::SendSysex(void* pData, uint Size) { |
|
|
Event event = pEventGenerator->CreateEvent(); |
|
|
event.Type = Event::type_sysex; |
|
|
event.Param.Sysex.Size = Size; |
|
|
event.pEngineChannel = NULL; // as Engine global event |
|
|
if (pEventQueue->write_space() > 0) { |
|
|
if (pSysexBuffer->write_space() >= Size) { |
|
|
// copy sysex data to input buffer |
|
|
uint toWrite = Size; |
|
|
uint8_t* pPos = (uint8_t*) pData; |
|
|
while (toWrite) { |
|
|
const uint writeNow = RTMath::Min(toWrite, pSysexBuffer->write_space_to_end()); |
|
|
pSysexBuffer->write(pPos, writeNow); |
|
|
toWrite -= writeNow; |
|
|
pPos += writeNow; |
|
107 |
|
|
108 |
} |
// handle FX send controllers |
109 |
// finally place sysex event into input event queue |
ProcessFxSendControllers(pChannel, itControlChangeEvent); |
|
pEventQueue->push(&event); |
|
|
} |
|
|
else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,CONFIG_SYSEX_BUFFER_SIZE)); |
|
|
} |
|
|
else dmsg(1,("Engine: Input event queue full!")); |
|
110 |
} |
} |
111 |
|
|
112 |
/** |
DiskThread* Engine::CreateDiskThread() { |
113 |
* Assigns and triggers a new voice for the respective MIDI key. |
return new DiskThread ( |
114 |
* |
iMaxDiskStreams, |
115 |
* @param pEngineChannel - engine channel on which this event occured on |
((pAudioOutputDevice->MaxSamplesPerCycle() << CONFIG_MAX_PITCH) << 1) + 6, //FIXME: assuming stereo |
116 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
&instruments |
117 |
*/ |
); |
118 |
void Engine::ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) { |
} |
119 |
#if !CONFIG_PROCESS_MUTED_CHANNELS |
|
120 |
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
void Engine::TriggerNewVoices ( |
121 |
#endif |
LinuxSampler::EngineChannel* pEngineChannel, |
122 |
|
RTList<Event>::Iterator& itNoteOnEvent, |
123 |
if (!pEngineChannel->pInstrument) return; // ignore if no instrument loaded |
bool HandleKeyGroupConflicts |
124 |
|
) { |
125 |
const int key = itNoteOnEvent->Param.Note.Key; |
EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel); |
126 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[key]; |
// first, get total amount of required voices (dependant on amount of layers) |
127 |
|
::gig::Region* pRegion = pChannel->pInstrument->GetRegion(itNoteOnEvent->Param.Note.Key); |
128 |
// move note on event to the key's own event list |
if (pRegion && !RegionSuspended(pRegion)) { |
129 |
RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents); |
int voicesRequired = pRegion->Layers; |
130 |
|
// now launch the required amount of voices |
131 |
// if Solo Mode then kill all already active voices |
for (int i = 0; i < voicesRequired; i++) |
132 |
if (pEngineChannel->SoloMode) { |
LaunchVoice(pChannel, itNoteOnEvent, i, false, true, HandleKeyGroupConflicts); |
|
Pool<uint>::Iterator itYoungestKey = pEngineChannel->pActiveKeys->last(); |
|
|
if (itYoungestKey) { |
|
|
const int iYoungestKey = *itYoungestKey; |
|
|
const midi_key_info_t* pOtherKey = &pEngineChannel->pMIDIKeyInfo[iYoungestKey]; |
|
|
if (pOtherKey->Active) { |
|
|
// get final portamento position of currently active voice |
|
|
if (pEngineChannel->PortamentoMode) { |
|
|
RTList<Voice>::Iterator itVoice = pOtherKey->pActiveVoices->last(); |
|
|
if (itVoice) itVoice->UpdatePortamentoPos(itNoteOnEventOnKeyList); |
|
|
} |
|
|
// kill all voices on the (other) key |
|
|
RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first(); |
|
|
RTList<Voice>::Iterator end = pOtherKey->pActiveVoices->end(); |
|
|
for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) { |
|
|
if (itVoiceToBeKilled->Type != Voice::type_release_trigger) |
|
|
itVoiceToBeKilled->Kill(itNoteOnEventOnKeyList); |
|
|
} |
|
|
} |
|
|
} |
|
|
// set this key as 'currently active solo key' |
|
|
pEngineChannel->SoloKey = key; |
|
133 |
} |
} |
|
|
|
|
// Change key dimension value if key is in keyswitching area |
|
|
{ |
|
|
const ::gig::Instrument* pInstrument = pEngineChannel->pInstrument; |
|
|
if (key >= pInstrument->DimensionKeyRange.low && key <= pInstrument->DimensionKeyRange.high) |
|
|
pEngineChannel->CurrentKeyDimension = float(key - pInstrument->DimensionKeyRange.low) / |
|
|
(pInstrument->DimensionKeyRange.high - pInstrument->DimensionKeyRange.low + 1); |
|
|
} |
|
|
|
|
|
pKey->KeyPressed = true; // the MIDI key was now pressed down |
|
|
pKey->Velocity = itNoteOnEventOnKeyList->Param.Note.Velocity; |
|
|
pKey->NoteOnTime = FrameTime + itNoteOnEventOnKeyList->FragmentPos(); // will be used to calculate note length |
|
|
|
|
|
// cancel release process of voices on this key if needed |
|
|
if (pKey->Active && !pEngineChannel->SustainPedal) { |
|
|
RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend(); |
|
|
if (itCancelReleaseEvent) { |
|
|
*itCancelReleaseEvent = *itNoteOnEventOnKeyList; // copy event |
|
|
itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type |
|
|
} |
|
|
else dmsg(1,("Event pool emtpy!\n")); |
|
|
} |
|
|
|
|
|
// allocate and trigger new voice(s) for the key |
|
|
{ |
|
|
// first, get total amount of required voices (dependant on amount of layers) |
|
|
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOnEventOnKeyList->Param.Note.Key); |
|
|
if (pRegion) { |
|
|
int voicesRequired = pRegion->Layers; |
|
|
// now launch the required amount of voices |
|
|
for (int i = 0; i < voicesRequired; i++) |
|
|
LaunchVoice(pEngineChannel, itNoteOnEventOnKeyList, i, false, true, true); |
|
|
} |
|
|
} |
|
|
|
|
|
// if neither a voice was spawned or postponed then remove note on event from key again |
|
|
if (!pKey->Active && !pKey->VoiceTheftsQueued) |
|
|
pKey->pEvents->free(itNoteOnEventOnKeyList); |
|
|
|
|
|
if (!pEngineChannel->SoloMode || pEngineChannel->PortamentoPos < 0.0f) pEngineChannel->PortamentoPos = (float) key; |
|
|
pKey->RoundRobinIndex++; |
|
134 |
} |
} |
135 |
|
|
136 |
/** |
void Engine::TriggerReleaseVoices ( |
137 |
* Releases the voices on the given key if sustain pedal is not pressed. |
LinuxSampler::EngineChannel* pEngineChannel, |
138 |
* If sustain is pressed, the release of the note will be postponed until |
RTList<Event>::Iterator& itNoteOffEvent |
139 |
* sustain pedal will be released or voice turned inactive by itself (e.g. |
) { |
140 |
* due to completion of sample playback). |
EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel); |
141 |
* |
MidiKey* pKey = &pChannel->pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key]; |
142 |
* @param pEngineChannel - engine channel on which this event occured on |
// first, get total amount of required voices (dependant on amount of layers) |
143 |
* @param itNoteOffEvent - key, velocity and time stamp of the event |
::gig::Region* pRegion = pChannel->pInstrument->GetRegion(itNoteOffEvent->Param.Note.Key); |
144 |
*/ |
if (pRegion) { |
145 |
void Engine::ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) { |
int voicesRequired = pRegion->Layers; |
146 |
#if !CONFIG_PROCESS_MUTED_CHANNELS |
|
147 |
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
// MIDI note-on velocity is used instead of note-off velocity |
148 |
#endif |
itNoteOffEvent->Param.Note.Velocity = pKey->Velocity; |
149 |
|
|
150 |
const int iKey = itNoteOffEvent->Param.Note.Key; |
// now launch the required amount of voices |
151 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[iKey]; |
for (int i = 0; i < voicesRequired; i++) |
152 |
pKey->KeyPressed = false; // the MIDI key was now released |
LaunchVoice(pChannel, itNoteOffEvent, i, true, false, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples |
|
|
|
|
// move event to the key's own event list |
|
|
RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents); |
|
|
|
|
|
bool bShouldRelease = pKey->Active && ShouldReleaseVoice(pEngineChannel, itNoteOffEventOnKeyList->Param.Note.Key); |
|
|
|
|
|
// in case Solo Mode is enabled, kill all voices on this key and respawn a voice on the highest pressed key (if any) |
|
|
if (pEngineChannel->SoloMode && pEngineChannel->pInstrument) { //TODO: this feels like too much code just for handling solo mode :P |
|
|
bool bOtherKeysPressed = false; |
|
|
if (iKey == pEngineChannel->SoloKey) { |
|
|
pEngineChannel->SoloKey = -1; |
|
|
// if there's still a key pressed down, respawn a voice (group) on the highest key |
|
|
for (int i = 127; i > 0; i--) { |
|
|
midi_key_info_t* pOtherKey = &pEngineChannel->pMIDIKeyInfo[i]; |
|
|
if (pOtherKey->KeyPressed) { |
|
|
bOtherKeysPressed = true; |
|
|
// make the other key the new 'currently active solo key' |
|
|
pEngineChannel->SoloKey = i; |
|
|
// get final portamento position of currently active voice |
|
|
if (pEngineChannel->PortamentoMode) { |
|
|
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
|
|
if (itVoice) itVoice->UpdatePortamentoPos(itNoteOffEventOnKeyList); |
|
|
} |
|
|
// create a pseudo note on event |
|
|
RTList<Event>::Iterator itPseudoNoteOnEvent = pOtherKey->pEvents->allocAppend(); |
|
|
if (itPseudoNoteOnEvent) { |
|
|
// copy event |
|
|
*itPseudoNoteOnEvent = *itNoteOffEventOnKeyList; |
|
|
// transform event to a note on event |
|
|
itPseudoNoteOnEvent->Type = Event::type_note_on; |
|
|
itPseudoNoteOnEvent->Param.Note.Key = i; |
|
|
itPseudoNoteOnEvent->Param.Note.Velocity = pOtherKey->Velocity; |
|
|
// allocate and trigger new voice(s) for the other key |
|
|
{ |
|
|
// first, get total amount of required voices (dependant on amount of layers) |
|
|
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(i); |
|
|
if (pRegion) { |
|
|
int voicesRequired = pRegion->Layers; |
|
|
// now launch the required amount of voices |
|
|
for (int iLayer = 0; iLayer < voicesRequired; iLayer++) |
|
|
LaunchVoice(pEngineChannel, itPseudoNoteOnEvent, iLayer, false, true, false); |
|
|
} |
|
|
} |
|
|
// if neither a voice was spawned or postponed then remove note on event from key again |
|
|
if (!pOtherKey->Active && !pOtherKey->VoiceTheftsQueued) |
|
|
pOtherKey->pEvents->free(itPseudoNoteOnEvent); |
|
|
|
|
|
} else dmsg(1,("Could not respawn voice, no free event left\n")); |
|
|
break; // done |
|
|
} |
|
|
} |
|
|
} |
|
|
if (bOtherKeysPressed) { |
|
|
if (pKey->Active) { // kill all voices on this key |
|
|
bShouldRelease = false; // no need to release, as we kill it here |
|
|
RTList<Voice>::Iterator itVoiceToBeKilled = pKey->pActiveVoices->first(); |
|
|
RTList<Voice>::Iterator end = pKey->pActiveVoices->end(); |
|
|
for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) { |
|
|
if (itVoiceToBeKilled->Type != Voice::type_release_trigger) |
|
|
itVoiceToBeKilled->Kill(itNoteOffEventOnKeyList); |
|
|
} |
|
|
} |
|
|
} else pEngineChannel->PortamentoPos = -1.0f; |
|
|
} |
|
|
|
|
|
// if no solo mode (the usual case) or if solo mode and no other key pressed, then release voices on this key if needed |
|
|
if (bShouldRelease) { |
|
|
itNoteOffEventOnKeyList->Type = Event::type_release; // transform event type |
|
|
|
|
|
// spawn release triggered voice(s) if needed |
|
|
if (pKey->ReleaseTrigger && pEngineChannel->pInstrument) { |
|
|
// first, get total amount of required voices (dependant on amount of layers) |
|
|
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOffEventOnKeyList->Param.Note.Key); |
|
|
if (pRegion) { |
|
|
int voicesRequired = pRegion->Layers; |
|
|
|
|
|
// MIDI note-on velocity is used instead of note-off velocity |
|
|
itNoteOffEventOnKeyList->Param.Note.Velocity = pKey->Velocity; |
|
|
|
|
|
// now launch the required amount of voices |
|
|
for (int i = 0; i < voicesRequired; i++) |
|
|
LaunchVoice(pEngineChannel, itNoteOffEventOnKeyList, i, true, false, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples |
|
|
} |
|
|
pKey->ReleaseTrigger = false; |
|
|
} |
|
153 |
} |
} |
|
|
|
|
// if neither a voice was spawned or postponed on this key then remove note off event from key again |
|
|
if (!pKey->Active && !pKey->VoiceTheftsQueued) |
|
|
pKey->pEvents->free(itNoteOffEventOnKeyList); |
|
154 |
} |
} |
155 |
|
|
156 |
/** |
Pool<Voice>::Iterator Engine::LaunchVoice ( |
157 |
* Moves pitchbend event from the general (input) event list to the engine |
LinuxSampler::EngineChannel* pEngineChannel, |
158 |
* channel's event list. It will actually processed later by the |
Pool<Event>::Iterator& itNoteOnEvent, |
159 |
* respective voice. |
int iLayer, |
160 |
* |
bool ReleaseTriggerVoice, |
161 |
* @param pEngineChannel - engine channel on which this event occured on |
bool VoiceStealing, |
162 |
* @param itPitchbendEvent - absolute pitch value and time stamp of the event |
bool HandleKeyGroupConflicts |
163 |
*/ |
) { |
164 |
void Engine::ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent) { |
EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel); |
165 |
pEngineChannel->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value |
int MIDIKey = itNoteOnEvent->Param.Note.Key; |
166 |
} |
EngineChannel::MidiKey* pKey = &pChannel->pMIDIKeyInfo[MIDIKey]; |
167 |
|
::gig::Region* pRegion = pChannel->pInstrument->GetRegion(MIDIKey); |
|
/** |
|
|
* Allocates and triggers a new voice. This method will usually be |
|
|
* called by the ProcessNoteOn() method and by the voices itself |
|
|
* (e.g. to spawn further voices on the same key for layered sounds). |
|
|
* |
|
|
* @param pEngineChannel - engine channel on which this event occured on |
|
|
* @param itNoteOnEvent - key, velocity and time stamp of the event |
|
|
* @param iLayer - layer index for the new voice (optional - only |
|
|
* in case of layered sounds of course) |
|
|
* @param ReleaseTriggerVoice - if new voice is a release triggered voice |
|
|
* (optional, default = false) |
|
|
* @param VoiceStealing - if voice stealing should be performed |
|
|
* when there is no free voice |
|
|
* (optional, default = true) |
|
|
* @param HandleKeyGroupConflicts - if voices should be killed due to a |
|
|
* key group conflict |
|
|
* @returns pointer to new voice or NULL if there was no free voice or |
|
|
* if the voice wasn't triggered (for example when no region is |
|
|
* defined for the given key). |
|
|
*/ |
|
|
Pool<Voice>::Iterator Engine::LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing, bool HandleKeyGroupConflicts) { |
|
|
int MIDIKey = itNoteOnEvent->Param.Note.Key; |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[MIDIKey]; |
|
|
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(MIDIKey); |
|
168 |
|
|
169 |
// if nothing defined for this key |
// if nothing defined for this key |
170 |
if (!pRegion) return Pool<Voice>::Iterator(); // nothing to do |
if (!pRegion) return Pool<Voice>::Iterator(); // nothing to do |
173 |
// key group, so the layered voices won't kill each other |
// key group, so the layered voices won't kill each other |
174 |
int iKeyGroup = (iLayer == 0 && !ReleaseTriggerVoice) ? pRegion->KeyGroup : 0; |
int iKeyGroup = (iLayer == 0 && !ReleaseTriggerVoice) ? pRegion->KeyGroup : 0; |
175 |
|
|
176 |
// handle key group (a.k.a. exclusive group) conflicts |
if (HandleKeyGroupConflicts) pChannel->HandleKeyGroupConflicts(iKeyGroup, itNoteOnEvent); |
|
if (HandleKeyGroupConflicts) { |
|
|
if (iKeyGroup) { // if this voice / key belongs to a key group |
|
|
uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[iKeyGroup]; |
|
|
if (*ppKeyGroup) { // if there's already an active key in that key group |
|
|
midi_key_info_t* pOtherKey = &pEngineChannel->pMIDIKeyInfo[**ppKeyGroup]; |
|
|
// kill all voices on the (other) key |
|
|
RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first(); |
|
|
RTList<Voice>::Iterator end = pOtherKey->pActiveVoices->end(); |
|
|
for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) { |
|
|
if (itVoiceToBeKilled->Type != Voice::type_release_trigger) { |
|
|
itVoiceToBeKilled->Kill(itNoteOnEvent); |
|
|
--VoiceSpawnsLeft; //FIXME: just a hack, we should better check in StealVoice() if the voice was killed due to key conflict |
|
|
} |
|
|
} |
|
|
} |
|
|
} |
|
|
} |
|
177 |
|
|
178 |
Voice::type_t VoiceType = Voice::type_normal; |
Voice::type_t VoiceType = Voice::type_normal; |
179 |
|
|
193 |
DimValues[i] = itNoteOnEvent->Param.Note.Velocity; |
DimValues[i] = itNoteOnEvent->Param.Note.Velocity; |
194 |
break; |
break; |
195 |
case ::gig::dimension_channelaftertouch: |
case ::gig::dimension_channelaftertouch: |
196 |
DimValues[i] = pEngineChannel->ControllerTable[128]; |
DimValues[i] = pChannel->ControllerTable[128]; |
197 |
break; |
break; |
198 |
case ::gig::dimension_releasetrigger: |
case ::gig::dimension_releasetrigger: |
199 |
VoiceType = (ReleaseTriggerVoice) ? Voice::type_release_trigger : (!iLayer) ? Voice::type_release_trigger_required : Voice::type_normal; |
VoiceType = (ReleaseTriggerVoice) ? Voice::type_release_trigger : (!iLayer) ? Voice::type_release_trigger_required : Voice::type_normal; |
200 |
DimValues[i] = (uint) ReleaseTriggerVoice; |
DimValues[i] = (uint) ReleaseTriggerVoice; |
201 |
break; |
break; |
202 |
case ::gig::dimension_keyboard: |
case ::gig::dimension_keyboard: |
203 |
DimValues[i] = (uint) (pEngineChannel->CurrentKeyDimension * pRegion->pDimensionDefinitions[i].zones); |
DimValues[i] = (uint) (pChannel->CurrentKeyDimension * pRegion->pDimensionDefinitions[i].zones); |
204 |
break; |
break; |
205 |
case ::gig::dimension_roundrobin: |
case ::gig::dimension_roundrobin: |
206 |
DimValues[i] = (uint) pEngineChannel->pMIDIKeyInfo[MIDIKey].RoundRobinIndex; // incremented for each note on |
DimValues[i] = (uint) pChannel->pMIDIKeyInfo[MIDIKey].RoundRobinIndex; // incremented for each note on |
207 |
break; |
break; |
208 |
case ::gig::dimension_random: |
case ::gig::dimension_random: |
209 |
RandomSeed = RandomSeed * 1103515245 + 12345; // classic pseudo random number generator |
RandomSeed = RandomSeed * 1103515245 + 12345; // classic pseudo random number generator |
210 |
DimValues[i] = (uint) RandomSeed >> (32 - pRegion->pDimensionDefinitions[i].bits); // highest bits are most random |
DimValues[i] = (uint) RandomSeed >> (32 - pRegion->pDimensionDefinitions[i].bits); // highest bits are most random |
211 |
break; |
break; |
212 |
case ::gig::dimension_modwheel: |
case ::gig::dimension_modwheel: |
213 |
DimValues[i] = pEngineChannel->ControllerTable[1]; |
DimValues[i] = pChannel->ControllerTable[1]; |
214 |
break; |
break; |
215 |
case ::gig::dimension_breath: |
case ::gig::dimension_breath: |
216 |
DimValues[i] = pEngineChannel->ControllerTable[2]; |
DimValues[i] = pChannel->ControllerTable[2]; |
217 |
break; |
break; |
218 |
case ::gig::dimension_foot: |
case ::gig::dimension_foot: |
219 |
DimValues[i] = pEngineChannel->ControllerTable[4]; |
DimValues[i] = pChannel->ControllerTable[4]; |
220 |
break; |
break; |
221 |
case ::gig::dimension_portamentotime: |
case ::gig::dimension_portamentotime: |
222 |
DimValues[i] = pEngineChannel->ControllerTable[5]; |
DimValues[i] = pChannel->ControllerTable[5]; |
223 |
break; |
break; |
224 |
case ::gig::dimension_effect1: |
case ::gig::dimension_effect1: |
225 |
DimValues[i] = pEngineChannel->ControllerTable[12]; |
DimValues[i] = pChannel->ControllerTable[12]; |
226 |
break; |
break; |
227 |
case ::gig::dimension_effect2: |
case ::gig::dimension_effect2: |
228 |
DimValues[i] = pEngineChannel->ControllerTable[13]; |
DimValues[i] = pChannel->ControllerTable[13]; |
229 |
break; |
break; |
230 |
case ::gig::dimension_genpurpose1: |
case ::gig::dimension_genpurpose1: |
231 |
DimValues[i] = pEngineChannel->ControllerTable[16]; |
DimValues[i] = pChannel->ControllerTable[16]; |
232 |
break; |
break; |
233 |
case ::gig::dimension_genpurpose2: |
case ::gig::dimension_genpurpose2: |
234 |
DimValues[i] = pEngineChannel->ControllerTable[17]; |
DimValues[i] = pChannel->ControllerTable[17]; |
235 |
break; |
break; |
236 |
case ::gig::dimension_genpurpose3: |
case ::gig::dimension_genpurpose3: |
237 |
DimValues[i] = pEngineChannel->ControllerTable[18]; |
DimValues[i] = pChannel->ControllerTable[18]; |
238 |
break; |
break; |
239 |
case ::gig::dimension_genpurpose4: |
case ::gig::dimension_genpurpose4: |
240 |
DimValues[i] = pEngineChannel->ControllerTable[19]; |
DimValues[i] = pChannel->ControllerTable[19]; |
241 |
break; |
break; |
242 |
case ::gig::dimension_sustainpedal: |
case ::gig::dimension_sustainpedal: |
243 |
DimValues[i] = pEngineChannel->ControllerTable[64]; |
DimValues[i] = pChannel->ControllerTable[64]; |
244 |
break; |
break; |
245 |
case ::gig::dimension_portamento: |
case ::gig::dimension_portamento: |
246 |
DimValues[i] = pEngineChannel->ControllerTable[65]; |
DimValues[i] = pChannel->ControllerTable[65]; |
247 |
break; |
break; |
248 |
case ::gig::dimension_sostenutopedal: |
case ::gig::dimension_sostenutopedal: |
249 |
DimValues[i] = pEngineChannel->ControllerTable[66]; |
DimValues[i] = pChannel->ControllerTable[66]; |
250 |
break; |
break; |
251 |
case ::gig::dimension_softpedal: |
case ::gig::dimension_softpedal: |
252 |
DimValues[i] = pEngineChannel->ControllerTable[67]; |
DimValues[i] = pChannel->ControllerTable[67]; |
253 |
break; |
break; |
254 |
case ::gig::dimension_genpurpose5: |
case ::gig::dimension_genpurpose5: |
255 |
DimValues[i] = pEngineChannel->ControllerTable[80]; |
DimValues[i] = pChannel->ControllerTable[80]; |
256 |
break; |
break; |
257 |
case ::gig::dimension_genpurpose6: |
case ::gig::dimension_genpurpose6: |
258 |
DimValues[i] = pEngineChannel->ControllerTable[81]; |
DimValues[i] = pChannel->ControllerTable[81]; |
259 |
break; |
break; |
260 |
case ::gig::dimension_genpurpose7: |
case ::gig::dimension_genpurpose7: |
261 |
DimValues[i] = pEngineChannel->ControllerTable[82]; |
DimValues[i] = pChannel->ControllerTable[82]; |
262 |
break; |
break; |
263 |
case ::gig::dimension_genpurpose8: |
case ::gig::dimension_genpurpose8: |
264 |
DimValues[i] = pEngineChannel->ControllerTable[83]; |
DimValues[i] = pChannel->ControllerTable[83]; |
265 |
break; |
break; |
266 |
case ::gig::dimension_effect1depth: |
case ::gig::dimension_effect1depth: |
267 |
DimValues[i] = pEngineChannel->ControllerTable[91]; |
DimValues[i] = pChannel->ControllerTable[91]; |
268 |
break; |
break; |
269 |
case ::gig::dimension_effect2depth: |
case ::gig::dimension_effect2depth: |
270 |
DimValues[i] = pEngineChannel->ControllerTable[92]; |
DimValues[i] = pChannel->ControllerTable[92]; |
271 |
break; |
break; |
272 |
case ::gig::dimension_effect3depth: |
case ::gig::dimension_effect3depth: |
273 |
DimValues[i] = pEngineChannel->ControllerTable[93]; |
DimValues[i] = pChannel->ControllerTable[93]; |
274 |
break; |
break; |
275 |
case ::gig::dimension_effect4depth: |
case ::gig::dimension_effect4depth: |
276 |
DimValues[i] = pEngineChannel->ControllerTable[94]; |
DimValues[i] = pChannel->ControllerTable[94]; |
277 |
break; |
break; |
278 |
case ::gig::dimension_effect5depth: |
case ::gig::dimension_effect5depth: |
279 |
DimValues[i] = pEngineChannel->ControllerTable[95]; |
DimValues[i] = pChannel->ControllerTable[95]; |
280 |
break; |
break; |
281 |
case ::gig::dimension_none: |
case ::gig::dimension_none: |
282 |
std::cerr << "gig::Engine::LaunchVoice() Error: dimension=none\n" << std::flush; |
std::cerr << "gig::Engine::LaunchVoice() Error: dimension=none\n" << std::flush; |
298 |
|
|
299 |
// allocate a new voice for the key |
// allocate a new voice for the key |
300 |
Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend(); |
Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend(); |
|
if (itNewVoice) { |
|
|
// launch the new voice |
|
|
if (itNewVoice->Trigger(pEngineChannel, itNoteOnEvent, pEngineChannel->Pitch, pDimRgn, VoiceType, iKeyGroup) < 0) { |
|
|
dmsg(4,("Voice not triggered\n")); |
|
|
pKey->pActiveVoices->free(itNewVoice); |
|
|
} |
|
|
else { // on success |
|
|
--VoiceSpawnsLeft; |
|
|
if (!pKey->Active) { // mark as active key |
|
|
pKey->Active = true; |
|
|
pKey->itSelf = pEngineChannel->pActiveKeys->allocAppend(); |
|
|
*pKey->itSelf = itNoteOnEvent->Param.Note.Key; |
|
|
} |
|
|
if (itNewVoice->KeyGroup) { |
|
|
uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[itNewVoice->KeyGroup]; |
|
|
*ppKeyGroup = &*pKey->itSelf; // put key as the (new) active key to its key group |
|
|
} |
|
|
if (itNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s) |
|
|
return itNewVoice; // success |
|
|
} |
|
|
} |
|
|
else if (VoiceStealing) { |
|
|
// try to steal one voice |
|
|
int result = StealVoice(pEngineChannel, itNoteOnEvent); |
|
|
if (!result) { // voice stolen successfully |
|
|
// put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died |
|
|
RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend(); |
|
|
if (itStealEvent) { |
|
|
*itStealEvent = *itNoteOnEvent; // copy event |
|
|
itStealEvent->Param.Note.Layer = iLayer; |
|
|
itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice; |
|
|
pKey->VoiceTheftsQueued++; |
|
|
} |
|
|
else dmsg(1,("Voice stealing queue full!\n")); |
|
|
} |
|
|
} |
|
|
|
|
|
return Pool<Voice>::Iterator(); // no free voice or error |
|
|
} |
|
|
|
|
|
/** |
|
|
* Will be called by LaunchVoice() method in case there are no free |
|
|
* voices left. This method will select and kill one old voice for |
|
|
* voice stealing and postpone the note-on event until the selected |
|
|
* voice actually died. |
|
|
* |
|
|
* @param pEngineChannel - engine channel on which this event occured on |
|
|
* @param itNoteOnEvent - key, velocity and time stamp of the event |
|
|
* @returns 0 on success, a value < 0 if no active voice could be picked for voice stealing |
|
|
*/ |
|
|
int Engine::StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) { |
|
|
if (VoiceSpawnsLeft <= 0) { |
|
|
dmsg(1,("Max. voice thefts per audio fragment reached (you may raise CONFIG_MAX_VOICES).\n")); |
|
|
return -1; |
|
|
} |
|
|
if (!pEventPool->poolIsEmpty()) { |
|
|
|
|
|
RTList<Voice>::Iterator itSelectedVoice; |
|
|
|
|
|
// Select one voice for voice stealing |
|
|
switch (CONFIG_VOICE_STEAL_ALGO) { |
|
|
|
|
|
// try to pick the oldest voice on the key where the new |
|
|
// voice should be spawned, if there is no voice on that |
|
|
// key, or no voice left to kill, then procceed with |
|
|
// 'oldestkey' algorithm |
|
|
case voice_steal_algo_oldestvoiceonkey: { |
|
|
midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key]; |
|
|
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
|
|
// proceed iterating if voice was created in this fragment cycle |
|
|
while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice; |
|
|
// if we haven't found a voice then proceed with algorithm 'oldestkey' |
|
|
if (itSelectedVoice && itSelectedVoice->IsStealable()) break; |
|
|
} // no break - intentional ! |
|
|
|
|
|
// try to pick the oldest voice on the oldest active key |
|
|
// from the same engine channel |
|
|
// (caution: must stay after 'oldestvoiceonkey' algorithm !) |
|
|
case voice_steal_algo_oldestkey: { |
|
|
// if we already stole in this fragment, try to proceed on same key |
|
|
if (this->itLastStolenVoice) { |
|
|
itSelectedVoice = this->itLastStolenVoice; |
|
|
do { |
|
|
++itSelectedVoice; |
|
|
} while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle |
|
|
// found a "stealable" voice ? |
|
|
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
|
|
// remember which voice we stole, so we can simply proceed on next voice stealing |
|
|
this->itLastStolenVoice = itSelectedVoice; |
|
|
break; // selection succeeded |
|
|
} |
|
|
} |
|
|
// get (next) oldest key |
|
|
RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKey) ? ++this->iuiLastStolenKey : pEngineChannel->pActiveKeys->first(); |
|
|
while (iuiSelectedKey) { |
|
|
midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey]; |
|
|
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
|
|
// proceed iterating if voice was created in this fragment cycle |
|
|
while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice; |
|
|
// found a "stealable" voice ? |
|
|
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
|
|
// remember which voice on which key we stole, so we can simply proceed on next voice stealing |
|
|
this->iuiLastStolenKey = iuiSelectedKey; |
|
|
this->itLastStolenVoice = itSelectedVoice; |
|
|
break; // selection succeeded |
|
|
} |
|
|
++iuiSelectedKey; // get next oldest key |
|
|
} |
|
|
break; |
|
|
} |
|
|
|
|
|
// don't steal anything |
|
|
case voice_steal_algo_none: |
|
|
default: { |
|
|
dmsg(1,("No free voice (voice stealing disabled)!\n")); |
|
|
return -1; |
|
|
} |
|
|
} |
|
|
|
|
|
// if we couldn't steal a voice from the same engine channel then |
|
|
// steal oldest voice on the oldest key from any other engine channel |
|
|
// (the smaller engine channel number, the higher priority) |
|
|
if (!itSelectedVoice || !itSelectedVoice->IsStealable()) { |
|
|
EngineChannel* pSelectedChannel; |
|
|
int iChannelIndex; |
|
|
// select engine channel |
|
|
if (pLastStolenChannel) { |
|
|
pSelectedChannel = pLastStolenChannel; |
|
|
iChannelIndex = pSelectedChannel->iEngineIndexSelf; |
|
|
} else { // pick the engine channel followed by this engine channel |
|
|
iChannelIndex = (pEngineChannel->iEngineIndexSelf + 1) % engineChannels.size(); |
|
|
pSelectedChannel = engineChannels[iChannelIndex]; |
|
|
} |
|
|
|
|
|
// if we already stole in this fragment, try to proceed on same key |
|
|
if (this->itLastStolenVoiceGlobally) { |
|
|
itSelectedVoice = this->itLastStolenVoiceGlobally; |
|
|
do { |
|
|
++itSelectedVoice; |
|
|
} while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle |
|
|
} |
|
|
|
|
|
#if CONFIG_DEVMODE |
|
|
EngineChannel* pBegin = pSelectedChannel; // to detect endless loop |
|
|
#endif // CONFIG_DEVMODE |
|
|
|
|
|
// did we find a 'stealable' voice? |
|
|
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
|
|
// remember which voice we stole, so we can simply proceed on next voice stealing |
|
|
this->itLastStolenVoiceGlobally = itSelectedVoice; |
|
|
} else while (true) { // iterate through engine channels |
|
|
// get (next) oldest key |
|
|
RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKeyGlobally) ? ++this->iuiLastStolenKeyGlobally : pSelectedChannel->pActiveKeys->first(); |
|
|
this->iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); // to prevent endless loop (see line above) |
|
|
while (iuiSelectedKey) { |
|
|
midi_key_info_t* pSelectedKey = &pSelectedChannel->pMIDIKeyInfo[*iuiSelectedKey]; |
|
|
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
|
|
// proceed iterating if voice was created in this fragment cycle |
|
|
while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice; |
|
|
// found a "stealable" voice ? |
|
|
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
|
|
// remember which voice on which key on which engine channel we stole, so we can simply proceed on next voice stealing |
|
|
this->iuiLastStolenKeyGlobally = iuiSelectedKey; |
|
|
this->itLastStolenVoiceGlobally = itSelectedVoice; |
|
|
this->pLastStolenChannel = pSelectedChannel; |
|
|
goto stealable_voice_found; // selection succeeded |
|
|
} |
|
|
++iuiSelectedKey; // get next key on current engine channel |
|
|
} |
|
|
// get next engine channel |
|
|
iChannelIndex = (iChannelIndex + 1) % engineChannels.size(); |
|
|
pSelectedChannel = engineChannels[iChannelIndex]; |
|
|
|
|
|
#if CONFIG_DEVMODE |
|
|
if (pSelectedChannel == pBegin) { |
|
|
dmsg(1,("FATAL ERROR: voice stealing endless loop!\n")); |
|
|
dmsg(1,("VoiceSpawnsLeft=%d.\n", VoiceSpawnsLeft)); |
|
|
dmsg(1,("Exiting.\n")); |
|
|
exit(-1); |
|
|
} |
|
|
#endif // CONFIG_DEVMODE |
|
|
} |
|
|
} |
|
|
|
|
|
// jump point if a 'stealable' voice was found |
|
|
stealable_voice_found: |
|
|
|
|
|
#if CONFIG_DEVMODE |
|
|
if (!itSelectedVoice->IsActive()) { |
|
|
dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n")); |
|
|
return -1; |
|
|
} |
|
|
#endif // CONFIG_DEVMODE |
|
|
|
|
|
// now kill the selected voice |
|
|
itSelectedVoice->Kill(itNoteOnEvent); |
|
|
|
|
|
--VoiceSpawnsLeft; |
|
|
|
|
|
return 0; // success |
|
|
} |
|
|
else { |
|
|
dmsg(1,("Event pool emtpy!\n")); |
|
|
return -1; |
|
|
} |
|
|
} |
|
|
|
|
|
/** |
|
|
* Removes the given voice from the MIDI key's list of active voices. |
|
|
* This method will be called when a voice went inactive, e.g. because |
|
|
* it finished to playback its sample, finished its release stage or |
|
|
* just was killed. |
|
|
* |
|
|
* @param pEngineChannel - engine channel on which this event occured on |
|
|
* @param itVoice - points to the voice to be freed |
|
|
*/ |
|
|
void Engine::FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice) { |
|
|
if (itVoice) { |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoice->MIDIKey]; |
|
|
|
|
|
uint keygroup = itVoice->KeyGroup; |
|
|
|
|
|
// if the sample and dimension region belong to an |
|
|
// instrument that is unloaded, tell the disk thread to |
|
|
// release them |
|
|
if (itVoice->Orphan) { |
|
|
pDiskThread->OrderDeletionOfDimreg(itVoice->pDimRgn); |
|
|
} |
|
|
|
|
|
// free the voice object |
|
|
pVoicePool->free(itVoice); |
|
|
|
|
|
// if no other voices left and member of a key group, remove from key group |
|
|
if (pKey->pActiveVoices->isEmpty() && keygroup) { |
|
|
uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[keygroup]; |
|
|
if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group |
|
|
} |
|
|
} |
|
|
else std::cerr << "Couldn't release voice! (!itVoice)\n" << std::flush; |
|
|
} |
|
|
|
|
|
/** |
|
|
* Called when there's no more voice left on a key, this call will |
|
|
* update the key info respectively. |
|
|
* |
|
|
* @param pEngineChannel - engine channel on which this event occured on |
|
|
* @param pKey - key which is now inactive |
|
|
*/ |
|
|
void Engine::FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey) { |
|
|
if (pKey->pActiveVoices->isEmpty()) { |
|
|
pKey->Active = false; |
|
|
pEngineChannel->pActiveKeys->free(pKey->itSelf); // remove key from list of active keys |
|
|
pKey->itSelf = RTList<uint>::Iterator(); |
|
|
pKey->ReleaseTrigger = false; |
|
|
pKey->pEvents->clear(); |
|
|
dmsg(3,("Key has no more voices now\n")); |
|
|
} |
|
|
else dmsg(1,("gig::Engine: Oops, tried to free a key which contains voices.\n")); |
|
|
} |
|
|
|
|
|
/** |
|
|
* Reacts on supported control change commands (e.g. pitch bend wheel, |
|
|
* modulation wheel, aftertouch). |
|
|
* |
|
|
* @param pEngineChannel - engine channel on which this event occured on |
|
|
* @param itControlChangeEvent - controller, value and time stamp of the event |
|
|
*/ |
|
|
void Engine::ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent) { |
|
|
dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value)); |
|
|
|
|
|
// update controller value in the engine channel's controller table |
|
|
pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value; |
|
|
|
|
|
// handle hard coded MIDI controllers |
|
|
switch (itControlChangeEvent->Param.CC.Controller) { |
|
|
case 5: { // portamento time |
|
|
pEngineChannel->PortamentoTime = (float) itControlChangeEvent->Param.CC.Value / 127.0f * (float) CONFIG_PORTAMENTO_TIME_MAX + (float) CONFIG_PORTAMENTO_TIME_MIN; |
|
|
break; |
|
|
} |
|
|
case 7: { // volume |
|
|
//TODO: not sample accurate yet |
|
|
pEngineChannel->MidiVolume = VolumeCurve[itControlChangeEvent->Param.CC.Value]; |
|
|
pEngineChannel->bStatusChanged = true; // engine channel status has changed, so set notify flag |
|
|
break; |
|
|
} |
|
|
case 10: { // panpot |
|
|
//TODO: not sample accurate yet |
|
|
pEngineChannel->GlobalPanLeft = PanCurve[128 - itControlChangeEvent->Param.CC.Value]; |
|
|
pEngineChannel->GlobalPanRight = PanCurve[itControlChangeEvent->Param.CC.Value]; |
|
|
break; |
|
|
} |
|
|
case 64: { // sustain |
|
|
if (itControlChangeEvent->Param.CC.Value >= 64 && !pEngineChannel->SustainPedal) { |
|
|
dmsg(4,("DAMPER (RIGHT) PEDAL DOWN\n")); |
|
|
pEngineChannel->SustainPedal = true; |
|
|
|
|
|
#if !CONFIG_PROCESS_MUTED_CHANNELS |
|
|
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
|
|
#endif |
|
|
|
|
|
// cancel release process of voices if necessary |
|
|
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
|
|
for (; iuiKey; ++iuiKey) { |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
|
|
if (!pKey->KeyPressed) { |
|
|
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
|
|
if (itNewEvent) { |
|
|
*itNewEvent = *itControlChangeEvent; // copy event to the key's own event list |
|
|
itNewEvent->Type = Event::type_cancel_release; // transform event type |
|
|
} |
|
|
else dmsg(1,("Event pool emtpy!\n")); |
|
|
} |
|
|
} |
|
|
} |
|
|
if (itControlChangeEvent->Param.CC.Value < 64 && pEngineChannel->SustainPedal) { |
|
|
dmsg(4,("DAMPER (RIGHT) PEDAL UP\n")); |
|
|
pEngineChannel->SustainPedal = false; |
|
|
|
|
|
#if !CONFIG_PROCESS_MUTED_CHANNELS |
|
|
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
|
|
#endif |
|
|
|
|
|
// release voices if their respective key is not pressed |
|
|
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
|
|
for (; iuiKey; ++iuiKey) { |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
|
|
if (!pKey->KeyPressed && ShouldReleaseVoice(pEngineChannel, *iuiKey)) { |
|
|
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
|
|
if (itNewEvent) { |
|
|
*itNewEvent = *itControlChangeEvent; // copy event to the key's own event list |
|
|
itNewEvent->Type = Event::type_release; // transform event type |
|
|
} |
|
|
else dmsg(1,("Event pool emtpy!\n")); |
|
|
} |
|
|
} |
|
|
} |
|
|
break; |
|
|
} |
|
|
case 65: { // portamento on / off |
|
|
KillAllVoices(pEngineChannel, itControlChangeEvent); |
|
|
pEngineChannel->PortamentoMode = itControlChangeEvent->Param.CC.Value >= 64; |
|
|
break; |
|
|
} |
|
|
case 66: { // sostenuto |
|
|
if (itControlChangeEvent->Param.CC.Value >= 64 && !pEngineChannel->SostenutoPedal) { |
|
|
dmsg(4,("SOSTENUTO (CENTER) PEDAL DOWN\n")); |
|
|
pEngineChannel->SostenutoPedal = true; |
|
|
|
|
|
#if !CONFIG_PROCESS_MUTED_CHANNELS |
|
|
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
|
|
#endif |
|
|
|
|
|
SostenutoKeyCount = 0; |
|
|
// Remeber the pressed keys |
|
|
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
|
|
for (; iuiKey; ++iuiKey) { |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
|
|
if (pKey->KeyPressed && SostenutoKeyCount < 128) SostenutoKeys[SostenutoKeyCount++] = *iuiKey; |
|
|
} |
|
|
} |
|
|
if (itControlChangeEvent->Param.CC.Value < 64 && pEngineChannel->SostenutoPedal) { |
|
|
dmsg(4,("SOSTENUTO (CENTER) PEDAL UP\n")); |
|
|
pEngineChannel->SostenutoPedal = false; |
|
|
|
|
|
#if !CONFIG_PROCESS_MUTED_CHANNELS |
|
|
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
|
|
#endif |
|
|
|
|
|
// release voices if the damper pedal is up and their respective key is not pressed |
|
|
for (int i = 0; i < SostenutoKeyCount; i++) { |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[SostenutoKeys[i]]; |
|
|
if (!pKey->KeyPressed && !pEngineChannel->SustainPedal) { |
|
|
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
|
|
if (itNewEvent) { |
|
|
*itNewEvent = *itControlChangeEvent; // copy event to the key's own event list |
|
|
itNewEvent->Type = Event::type_release; // transform event type |
|
|
} |
|
|
else dmsg(1,("Event pool emtpy!\n")); |
|
|
} |
|
|
} |
|
|
} |
|
|
break; |
|
|
} |
|
|
|
|
|
|
|
|
// Channel Mode Messages |
|
|
|
|
|
case 120: { // all sound off |
|
|
KillAllVoices(pEngineChannel, itControlChangeEvent); |
|
|
break; |
|
|
} |
|
|
case 121: { // reset all controllers |
|
|
pEngineChannel->ResetControllers(); |
|
|
break; |
|
|
} |
|
|
case 123: { // all notes off |
|
|
#if CONFIG_PROCESS_ALL_NOTES_OFF |
|
|
ReleaseAllVoices(pEngineChannel, itControlChangeEvent); |
|
|
#endif // CONFIG_PROCESS_ALL_NOTES_OFF |
|
|
break; |
|
|
} |
|
|
case 126: { // mono mode on |
|
|
KillAllVoices(pEngineChannel, itControlChangeEvent); |
|
|
pEngineChannel->SoloMode = true; |
|
|
break; |
|
|
} |
|
|
case 127: { // poly mode on |
|
|
KillAllVoices(pEngineChannel, itControlChangeEvent); |
|
|
pEngineChannel->SoloMode = false; |
|
|
break; |
|
|
} |
|
|
} |
|
|
|
|
|
// handle FX send controllers |
|
|
if (!pEngineChannel->fxSends.empty()) { |
|
|
for (int iFxSend = 0; iFxSend < pEngineChannel->GetFxSendCount(); iFxSend++) { |
|
|
FxSend* pFxSend = pEngineChannel->GetFxSend(iFxSend); |
|
|
if (pFxSend->MidiController() == itControlChangeEvent->Param.CC.Controller) |
|
|
pFxSend->SetLevel(itControlChangeEvent->Param.CC.Value); |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
/** |
|
|
* Reacts on MIDI system exclusive messages. |
|
|
* |
|
|
* @param itSysexEvent - sysex data size and time stamp of the sysex event |
|
|
*/ |
|
|
void Engine::ProcessSysex(Pool<Event>::Iterator& itSysexEvent) { |
|
|
RingBuffer<uint8_t,false>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader(); |
|
|
|
|
|
uint8_t exclusive_status, id; |
|
|
if (!reader.pop(&exclusive_status)) goto free_sysex_data; |
|
|
if (!reader.pop(&id)) goto free_sysex_data; |
|
|
if (exclusive_status != 0xF0) goto free_sysex_data; |
|
|
|
|
|
switch (id) { |
|
|
case 0x41: { // Roland |
|
|
dmsg(3,("Roland Sysex\n")); |
|
|
uint8_t device_id, model_id, cmd_id; |
|
|
if (!reader.pop(&device_id)) goto free_sysex_data; |
|
|
if (!reader.pop(&model_id)) goto free_sysex_data; |
|
|
if (!reader.pop(&cmd_id)) goto free_sysex_data; |
|
|
if (model_id != 0x42 /*GS*/) goto free_sysex_data; |
|
|
if (cmd_id != 0x12 /*DT1*/) goto free_sysex_data; |
|
|
|
|
|
// command address |
|
|
uint8_t addr[3]; // 2 byte addr MSB, followed by 1 byte addr LSB) |
|
|
const RingBuffer<uint8_t,false>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later |
|
|
if (reader.read(&addr[0], 3) != 3) goto free_sysex_data; |
|
|
if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters |
|
|
dmsg(3,("\tSystem Parameter\n")); |
|
|
} |
|
|
else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters |
|
|
dmsg(3,("\tCommon Parameter\n")); |
|
|
} |
|
|
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1) |
|
|
dmsg(3,("\tPart Parameter\n")); |
|
|
switch (addr[2]) { |
|
|
case 0x40: { // scale tuning |
|
|
dmsg(3,("\t\tScale Tuning\n")); |
|
|
uint8_t scale_tunes[12]; // detuning of all 12 semitones of an octave |
|
|
if (reader.read(&scale_tunes[0], 12) != 12) goto free_sysex_data; |
|
|
uint8_t checksum; |
|
|
if (!reader.pop(&checksum)) goto free_sysex_data; |
|
|
#if CONFIG_ASSERT_GS_SYSEX_CHECKSUM |
|
|
if (GSCheckSum(checksum_reader, 12)) goto free_sysex_data; |
|
|
#endif // CONFIG_ASSERT_GS_SYSEX_CHECKSUM |
|
|
for (int i = 0; i < 12; i++) scale_tunes[i] -= 64; |
|
|
AdjustScale((int8_t*) scale_tunes); |
|
|
dmsg(3,("\t\t\tNew scale applied.\n")); |
|
|
break; |
|
|
} |
|
|
} |
|
|
} |
|
|
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2) |
|
|
} |
|
|
else if (addr[0] == 0x41) { // Drum Setup Parameters |
|
|
} |
|
|
break; |
|
|
} |
|
|
} |
|
|
|
|
|
free_sysex_data: // finally free sysex data |
|
|
pSysexBuffer->increment_read_ptr(itSysexEvent->Param.Sysex.Size); |
|
|
} |
|
|
|
|
|
/** |
|
|
* Calculates the Roland GS sysex check sum. |
|
|
* |
|
|
* @param AddrReader - reader which currently points to the first GS |
|
|
* command address byte of the GS sysex message in |
|
|
* question |
|
|
* @param DataSize - size of the GS message data (in bytes) |
|
|
*/ |
|
|
uint8_t Engine::GSCheckSum(const RingBuffer<uint8_t,false>::NonVolatileReader AddrReader, uint DataSize) { |
|
|
RingBuffer<uint8_t,false>::NonVolatileReader reader = AddrReader; |
|
|
uint bytes = 3 /*addr*/ + DataSize; |
|
|
uint8_t addr_and_data[bytes]; |
|
|
reader.read(&addr_and_data[0], bytes); |
|
|
uint8_t sum = 0; |
|
|
for (uint i = 0; i < bytes; i++) sum += addr_and_data[i]; |
|
|
return 128 - sum % 128; |
|
|
} |
|
|
|
|
|
/** |
|
|
* Allows to tune each of the twelve semitones of an octave. |
|
|
* |
|
|
* @param ScaleTunes - detuning of all twelve semitones (in cents) |
|
|
*/ |
|
|
void Engine::AdjustScale(int8_t ScaleTunes[12]) { |
|
|
memcpy(&this->ScaleTuning[0], &ScaleTunes[0], 12); //TODO: currently not sample accurate |
|
|
} |
|
|
|
|
|
/** |
|
|
* Releases all voices on an engine channel. All voices will go into |
|
|
* the release stage and thus it might take some time (e.g. dependant to |
|
|
* their envelope release time) until they actually die. |
|
|
* |
|
|
* @param pEngineChannel - engine channel on which all voices should be released |
|
|
* @param itReleaseEvent - event which caused this releasing of all voices |
|
|
*/ |
|
|
void Engine::ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent) { |
|
|
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
|
|
while (iuiKey) { |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
|
|
++iuiKey; |
|
|
// append a 'release' event to the key's own event list |
|
|
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
|
|
if (itNewEvent) { |
|
|
*itNewEvent = *itReleaseEvent; // copy original event (to the key's event list) |
|
|
itNewEvent->Type = Event::type_release; // transform event type |
|
|
} |
|
|
else dmsg(1,("Event pool emtpy!\n")); |
|
|
} |
|
|
} |
|
|
|
|
|
/** |
|
|
* Kills all voices on an engine channel as soon as possible. Voices |
|
|
* won't get into release state, their volume level will be ramped down |
|
|
* as fast as possible. |
|
|
* |
|
|
* @param pEngineChannel - engine channel on which all voices should be killed |
|
|
* @param itKillEvent - event which caused this killing of all voices |
|
|
*/ |
|
|
void Engine::KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent) { |
|
|
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
|
|
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
|
|
while (iuiKey != end) { // iterate through all active keys |
|
|
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
|
|
++iuiKey; |
|
|
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
|
|
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
|
|
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
|
|
itVoice->Kill(itKillEvent); |
|
|
--VoiceSpawnsLeft; //FIXME: just a temporary workaround, we should check the cause in StealVoice() instead |
|
|
} |
|
|
} |
|
|
} |
|
301 |
|
|
302 |
/** |
int res = InitNewVoice ( |
303 |
* Determines whether the specified voice should be released. |
pChannel, pDimRgn, itNoteOnEvent, VoiceType, iLayer, |
304 |
* |
iKeyGroup, ReleaseTriggerVoice, VoiceStealing, itNewVoice |
305 |
* @param pEngineChannel - The engine channel on which the voice should be checked |
); |
306 |
* @param Key - The key number |
if (!res) return itNewVoice; |
|
* @returns true if the specified should be released, false otherwise. |
|
|
*/ |
|
|
bool Engine::ShouldReleaseVoice(EngineChannel* pEngineChannel, int Key) { |
|
|
if (pEngineChannel->SustainPedal) return false; |
|
307 |
|
|
308 |
if (pEngineChannel->SostenutoPedal) { |
return Pool<Voice>::Iterator(); // no free voice or error |
|
for (int i = 0; i < SostenutoKeyCount; i++) |
|
|
if (Key == SostenutoKeys[i]) return false; |
|
|
} |
|
|
|
|
|
return true; |
|
|
} |
|
|
|
|
|
uint Engine::VoiceCount() { |
|
|
return ActiveVoiceCount; |
|
|
} |
|
|
|
|
|
uint Engine::VoiceCountMax() { |
|
|
return ActiveVoiceCountMax; |
|
309 |
} |
} |
310 |
|
|
311 |
bool Engine::DiskStreamSupported() { |
bool Engine::DiskStreamSupported() { |
312 |
return true; |
return true; |
313 |
} |
} |
314 |
|
|
|
uint Engine::DiskStreamCount() { |
|
|
return (pDiskThread) ? pDiskThread->ActiveStreamCount : 0; |
|
|
} |
|
|
|
|
|
uint Engine::DiskStreamCountMax() { |
|
|
return (pDiskThread) ? pDiskThread->ActiveStreamCountMax : 0; |
|
|
} |
|
|
|
|
|
String Engine::DiskStreamBufferFillBytes() { |
|
|
return pDiskThread->GetBufferFillBytes(); |
|
|
} |
|
|
|
|
|
String Engine::DiskStreamBufferFillPercentage() { |
|
|
return pDiskThread->GetBufferFillPercentage(); |
|
|
} |
|
|
|
|
|
String Engine::EngineName() { |
|
|
return LS_GIG_ENGINE_NAME; |
|
|
} |
|
|
|
|
315 |
String Engine::Description() { |
String Engine::Description() { |
316 |
return "Gigasampler Engine"; |
return "GigaSampler Format Engine"; |
317 |
} |
} |
318 |
|
|
319 |
String Engine::Version() { |
String Engine::Version() { |
320 |
String s = "$Revision: 1.71 $"; |
String s = "$Revision: 1.106 $"; |
321 |
return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
322 |
} |
} |
323 |
|
|
|
InstrumentManager* Engine::GetInstrumentManager() { |
|
|
return &instruments; |
|
|
} |
|
|
|
|
|
// static constant initializers |
|
|
const float* Engine::VolumeCurve(InitVolumeCurve()); |
|
|
const float* Engine::PanCurve(InitPanCurve()); |
|
|
const float* Engine::CrossfadeCurve(InitCrossfadeCurve()); |
|
|
|
|
|
float* Engine::InitVolumeCurve() { |
|
|
// line-segment approximation |
|
|
const float segments[] = { |
|
|
0, 0, 2, 0.0046, 16, 0.016, 31, 0.051, 45, 0.115, 54.5, 0.2, |
|
|
64.5, 0.39, 74, 0.74, 92, 1.03, 114, 1.94, 119.2, 2.2, 127, 2.2 |
|
|
}; |
|
|
return InitCurve(segments); |
|
|
} |
|
|
|
|
|
float* Engine::InitPanCurve() { |
|
|
// line-segment approximation |
|
|
const float segments[] = { |
|
|
0, 0, 1, 0, |
|
|
2, 0.05, 31.5, 0.7, 51, 0.851, 74.5, 1.12, |
|
|
127, 1.41, 128, 1.41 |
|
|
}; |
|
|
return InitCurve(segments, 129); |
|
|
} |
|
|
|
|
|
float* Engine::InitCrossfadeCurve() { |
|
|
// line-segment approximation |
|
|
const float segments[] = { |
|
|
0, 0, 1, 0.03, 10, 0.1, 51, 0.58, 127, 1 |
|
|
}; |
|
|
return InitCurve(segments); |
|
|
} |
|
|
|
|
|
float* Engine::InitCurve(const float* segments, int size) { |
|
|
float* y = new float[size]; |
|
|
for (int x = 0 ; x < size ; x++) { |
|
|
if (x > segments[2]) segments += 2; |
|
|
y[x] = segments[1] + (x - segments[0]) * |
|
|
(segments[3] - segments[1]) / (segments[2] - segments[0]); |
|
|
} |
|
|
return y; |
|
|
} |
|
|
|
|
|
/** |
|
|
* Changes the instrument for an engine channel. |
|
|
* |
|
|
* @param pEngineChannel - engine channel on which the instrument |
|
|
* should be changed |
|
|
* @param pInstrument - new instrument |
|
|
* @returns a list of dimension regions from the old instrument |
|
|
* that are still in use |
|
|
*/ |
|
|
::gig::DimensionRegion** Engine::ChangeInstrument(EngineChannel* pEngineChannel, ::gig::Instrument* pInstrument) { |
|
|
instrument_change_command_t command; |
|
|
command.pEngineChannel = pEngineChannel; |
|
|
command.pInstrument = pInstrument; |
|
|
InstrumentChangeQueue->push(&command); |
|
|
|
|
|
// wait for the audio thread to confirm that the instrument |
|
|
// change has been done |
|
|
instrument_change_reply_t reply; |
|
|
while (InstrumentChangeReplyQueue->pop(&reply) == 0) { |
|
|
usleep(10000); |
|
|
} |
|
|
return pDimRegionsInUse; |
|
|
} |
|
|
|
|
324 |
}} // namespace LinuxSampler::gig |
}} // namespace LinuxSampler::gig |