/[svn]/linuxsampler/trunk/src/engines/gig/Engine.cpp
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revision 475 by schoenebeck, Thu Mar 17 23:56:56 2005 UTC revision 2611 by schoenebeck, Mon Jun 9 19:20:37 2014 UTC
# Line 2  Line 2 
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 Christian Schoenebeck                              *   *   Copyright (C) 2005-2008 Christian Schoenebeck                         *
7     *   Copyright (C) 2009-2010 Christian Schoenebeck and 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  *
# Line 21  Line 22 
22   *   MA  02111-1307  USA                                                   *   *   MA  02111-1307  USA                                                   *
23   ***************************************************************************/   ***************************************************************************/
24    
 #include <sstream>  
 #include "DiskThread.h"  
 #include "Voice.h"  
 #include "EGADSR.h"  
 #include "../EngineFactory.h"  
   
25  #include "Engine.h"  #include "Engine.h"
26    #include "EngineChannel.h"
27  #if defined(__APPLE__)  #include "InstrumentScriptVM.h"
 # include <stdlib.h>  
 #else  
 # include <malloc.h>  
 #endif  
28    
29  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
30        Engine::Format Engine::GetEngineFormat() { return GIG; }
31    
32      InstrumentResourceManager Engine::instruments;      void Engine::CreateInstrumentScriptVM() {
33            dmsg(2,("gig::Engine created Giga format scriptvm\n"));
34      std::map<AudioOutputDevice*,Engine*> Engine::engines;          if (pScriptVM) return;
35            pScriptVM = new InstrumentScriptVM; // gig format specific extended script runner
     /**  
      * Get a gig::Engine object for the given gig::EngineChannel and the  
      * given AudioOutputDevice. All engine channels which are connected to  
      * the same audio output device will use the same engine instance. This  
      * method will be called by a gig::EngineChannel whenever it's  
      * connecting to a audio output device.  
      *  
      * @param pChannel - engine channel which acquires an engine object  
      * @param pDevice  - the audio output device \a pChannel is connected to  
      */  
     Engine* Engine::AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) {  
         Engine* pEngine = NULL;  
         // check if there's already an engine for the given audio output device  
         if (engines.count(pDevice)) {  
             dmsg(4,("Using existing gig::Engine.\n"));  
             pEngine = engines[pDevice];  
         } else { // create a new engine (and disk thread) instance for the given audio output device  
             dmsg(4,("Creating new gig::Engine.\n"));  
             pEngine = (Engine*) EngineFactory::Create("gig");  
             pEngine->Connect(pDevice);  
             engines[pDevice] = pEngine;  
         }  
         // register engine channel to the engine instance  
         pEngine->engineChannels.add(pChannel);  
         // remember index in the ArrayList  
         pChannel->iEngineIndexSelf = pEngine->engineChannels.size() - 1;  
         dmsg(4,("This gig::Engine has now %d EngineChannels.\n",pEngine->engineChannels.size()));  
         return pEngine;  
     }  
   
     /**  
      * Once an engine channel is disconnected from an audio output device,  
      * it wil immediately call this method to unregister itself from the  
      * engine instance and if that engine instance is not used by any other  
      * engine channel anymore, then that engine instance will be destroyed.  
      *  
      * @param pChannel - engine channel which wants to disconnect from it's  
      *                   engine instance  
      * @param pDevice  - audio output device \a pChannel was connected to  
      */  
     void Engine::FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) {  
         dmsg(4,("Disconnecting EngineChannel from gig::Engine.\n"));  
         Engine* pEngine = engines[pDevice];  
         // unregister EngineChannel from the Engine instance  
         pEngine->engineChannels.remove(pChannel);  
         // if the used Engine instance is not used anymore, then destroy it  
         if (pEngine->engineChannels.empty()) {  
             pDevice->Disconnect(pEngine);  
             engines.erase(pDevice);  
             delete pEngine;  
             dmsg(4,("Destroying gig::Engine.\n"));  
         }  
         else dmsg(4,("This gig::Engine has now %d EngineChannels.\n",pEngine->engineChannels.size()));  
     }  
   
     /**  
      * Constructor  
      */  
     Engine::Engine() {  
         pAudioOutputDevice = NULL;  
         pDiskThread        = NULL;  
         pEventGenerator    = NULL;  
         pSysexBuffer       = new RingBuffer<uint8_t>(SYSEX_BUFFER_SIZE, 0);  
         pEventQueue        = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0);  
         pEventPool         = new Pool<Event>(MAX_EVENTS_PER_FRAGMENT);  
         pVoicePool         = new Pool<Voice>(MAX_AUDIO_VOICES);  
         pVoiceStealingQueue = new RTList<Event>(pEventPool);  
         pGlobalEvents      = new RTList<Event>(pEventPool);  
         for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {  
             iterVoice->SetEngine(this);  
         }  
         pVoicePool->clear();  
   
         pSynthesisParameters[0] = NULL; // we allocate when an audio device is connected  
         pBasicFilterParameters  = NULL;  
         pMainFilterParameters   = NULL;  
   
         ResetInternal();  
     }  
   
     /**  
      * Destructor  
      */  
     Engine::~Engine() {  
         if (pDiskThread) {  
             dmsg(1,("Stopping disk thread..."));  
             pDiskThread->StopThread();  
             delete pDiskThread;  
             dmsg(1,("OK\n"));  
         }  
         if (pEventQueue) delete pEventQueue;  
         if (pEventPool)  delete pEventPool;  
         if (pVoicePool) {  
             pVoicePool->clear();  
             delete pVoicePool;  
         }  
         if (pEventGenerator) delete pEventGenerator;  
         if (pMainFilterParameters) delete[] pMainFilterParameters;  
         if (pBasicFilterParameters) delete[] pBasicFilterParameters;  
         if (pSynthesisParameters[0]) free(pSynthesisParameters[0]);  
         if (pVoiceStealingQueue) delete pVoiceStealingQueue;  
         if (pSysexBuffer) delete pSysexBuffer;  
         EngineFactory::Destroy(this);  
     }  
   
     void Engine::Enable() {  
         dmsg(3,("gig::Engine: enabling\n"));  
         EngineDisabled.PushAndUnlock(false, 2); // set condition object 'EngineDisabled' to false (wait max. 2s)  
         dmsg(3,("gig::Engine: enabled (val=%d)\n", EngineDisabled.GetUnsafe()));  
     }  
   
     void Engine::Disable() {  
         dmsg(3,("gig::Engine: disabling\n"));  
         bool* pWasDisabled = EngineDisabled.PushAndUnlock(true, 2); // wait max. 2s  
         if (!pWasDisabled) dmsg(3,("gig::Engine warning: Timeout waiting to disable engine.\n"));  
     }  
   
     void Engine::DisableAndLock() {  
         dmsg(3,("gig::Engine: disabling\n"));  
         bool* pWasDisabled = EngineDisabled.Push(true, 2); // wait max. 2s  
         if (!pWasDisabled) dmsg(3,("gig::Engine warning: Timeout waiting to disable engine.\n"));  
     }  
   
     /**  
      *  Reset all voices and disk thread and clear input event queue and all  
      *  control and status variables.  
      */  
     void Engine::Reset() {  
         DisableAndLock();  
         ResetInternal();  
         Enable();  
     }  
   
     /**  
      *  Reset all voices and disk thread and clear input event queue and all  
      *  control and status variables. This method is not thread safe!  
      */  
     void Engine::ResetInternal() {  
         ActiveVoiceCount    = 0;  
         ActiveVoiceCountMax = 0;  
   
         // reset voice stealing parameters  
         pVoiceStealingQueue->clear();  
         itLastStolenVoice  = RTList<Voice>::Iterator();  
         iuiLastStolenKey   = RTList<uint>::Iterator();  
         pLastStolenChannel = NULL;  
   
         // reset to normal chromatic scale (means equal temper)  
         memset(&ScaleTuning[0], 0x00, 12);  
   
         // reset all voices  
         for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {  
             iterVoice->Reset();  
         }  
         pVoicePool->clear();  
   
         // reset disk thread  
         if (pDiskThread) pDiskThread->Reset();  
   
         // delete all input events  
         pEventQueue->init();  
     }  
   
     /**  
      * Connect this engine instance with the given audio output device.  
      * This method will be called when an Engine instance is created.  
      * All of the engine's data structures which are dependant to the used  
      * audio output device / driver will be (re)allocated and / or  
      * adjusted appropriately.  
      *  
      * @param pAudioOut - audio output device to connect to  
      */  
     void Engine::Connect(AudioOutputDevice* pAudioOut) {  
         pAudioOutputDevice = pAudioOut;  
   
         ResetInternal();  
   
         // inform audio driver for the need of two channels  
         try {  
             pAudioOutputDevice->AcquireChannels(2); // gig engine only stereo  
         }  
         catch (AudioOutputException e) {  
             String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message();  
             throw LinuxSamplerException(msg);  
         }  
   
         this->MaxSamplesPerCycle = pAudioOutputDevice->MaxSamplesPerCycle();  
         this->SampleRate         = pAudioOutputDevice->SampleRate();  
   
         // FIXME: audio drivers with varying fragment sizes might be a problem here  
         MaxFadeOutPos = MaxSamplesPerCycle - int(double(SampleRate) * EG_MIN_RELEASE_TIME) - 1;  
         if (MaxFadeOutPos < 0)  
             throw LinuxSamplerException("EG_MIN_RELEASE_TIME in EGADSR.h too big for current audio fragment size / sampling rate!");  
   
         // (re)create disk thread  
         if (this->pDiskThread) {  
             dmsg(1,("Stopping disk thread..."));  
             this->pDiskThread->StopThread();  
             delete this->pDiskThread;  
             dmsg(1,("OK\n"));  
         }  
         this->pDiskThread = new DiskThread(((pAudioOut->MaxSamplesPerCycle() << MAX_PITCH) << 1) + 6); //FIXME: assuming stereo  
         if (!pDiskThread) {  
             dmsg(0,("gig::Engine  new diskthread = NULL\n"));  
             exit(EXIT_FAILURE);  
         }  
   
         for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {  
             iterVoice->pDiskThread = this->pDiskThread;  
             dmsg(3,("d"));  
         }  
         pVoicePool->clear();  
   
         // (re)create event generator  
         if (pEventGenerator) delete pEventGenerator;  
         pEventGenerator = new EventGenerator(pAudioOut->SampleRate());  
   
         // (re)allocate synthesis parameter matrix  
         if (pSynthesisParameters[0]) free(pSynthesisParameters[0]);  
   
         #if defined(__APPLE__)  
         pSynthesisParameters[0] = (float *) malloc(Event::destination_count * sizeof(float) * pAudioOut->MaxSamplesPerCycle());  
         #else  
         pSynthesisParameters[0] = (float *) memalign(16,(Event::destination_count * sizeof(float) * pAudioOut->MaxSamplesPerCycle()));  
         #endif  
         for (int dst = 1; dst < Event::destination_count; dst++)  
             pSynthesisParameters[dst] = pSynthesisParameters[dst - 1] + pAudioOut->MaxSamplesPerCycle();  
   
         // (re)allocate biquad filter parameter sequence  
         if (pBasicFilterParameters) delete[] pBasicFilterParameters;  
         if (pMainFilterParameters)  delete[] pMainFilterParameters;  
         pBasicFilterParameters = new biquad_param_t[pAudioOut->MaxSamplesPerCycle()];  
         pMainFilterParameters  = new biquad_param_t[pAudioOut->MaxSamplesPerCycle()];  
   
         dmsg(1,("Starting disk thread..."));  
         pDiskThread->StartThread();  
         dmsg(1,("OK\n"));  
   
         for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {  
             if (!iterVoice->pDiskThread) {  
                 dmsg(0,("Engine -> voice::trigger: !pDiskThread\n"));  
                 exit(EXIT_FAILURE);  
             }  
         }  
     }  
   
     /**  
      * Clear all engine global event lists.  
      */  
     void Engine::ClearEventLists() {  
         pGlobalEvents->clear();  
     }  
   
     /**  
      * Copy all events from the engine's global input queue buffer to the  
      * engine's internal event list. This will be done at the beginning of  
      * each audio cycle (that is each RenderAudio() call) to distinguish  
      * all global events which have to be processed in the current audio  
      * cycle. These events are usually just SysEx messages. Every  
      * EngineChannel has it's own input event queue buffer and event list  
      * to handle common events like NoteOn, NoteOff and ControlChange  
      * events.  
      *  
      * @param Samples - number of sample points to be processed in the  
      *                  current audio cycle  
      */  
     void Engine::ImportEvents(uint Samples) {  
         RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();  
         Event* pEvent;  
         while (true) {  
             // get next event from input event queue  
             if (!(pEvent = eventQueueReader.pop())) break;  
             // if younger event reached, ignore that and all subsequent ones for now  
             if (pEvent->FragmentPos() >= Samples) {  
                 eventQueueReader--;  
                 dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));  
                 pEvent->ResetFragmentPos();  
                 break;  
             }  
             // copy event to internal event list  
             if (pGlobalEvents->poolIsEmpty()) {  
                 dmsg(1,("Event pool emtpy!\n"));  
                 break;  
             }  
             *pGlobalEvents->allocAppend() = *pEvent;  
         }  
         eventQueueReader.free(); // free all copied events from input queue  
     }  
   
     /**  
      *  Let this engine proceed to render the given amount of sample points. The  
      *  calculated audio data of all voices of this engine will be placed into  
      *  the engine's audio sum buffer which has to be copied and eventually be  
      *  converted to the appropriate value range by the audio output class (e.g.  
      *  AlsaIO or JackIO) right after.  
      *  
      *  @param Samples - number of sample points to be rendered  
      *  @returns       0 on success  
      */  
     int Engine::RenderAudio(uint Samples) {  
         dmsg(5,("RenderAudio(Samples=%d)\n", Samples));  
   
         // return if engine disabled  
         if (EngineDisabled.Pop()) {  
             dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe()));  
             return 0;  
         }  
   
         // update time of start and end of this audio fragment (as events' time stamps relate to this)  
         pEventGenerator->UpdateFragmentTime(Samples);  
   
         // get all events from the engine's global input event queue which belong to the current fragment  
         // (these are usually just SysEx messages)  
         ImportEvents(Samples);  
   
         // process engine global events (these are currently only MIDI System Exclusive messages)  
         {  
             RTList<Event>::Iterator itEvent = pGlobalEvents->first();  
             RTList<Event>::Iterator end     = pGlobalEvents->end();  
             for (; itEvent != end; ++itEvent) {  
                 switch (itEvent->Type) {  
                     case Event::type_sysex:  
                         dmsg(5,("Engine: Sysex received\n"));  
                         ProcessSysex(itEvent);  
                         break;  
                 }  
             }  
         }  
   
         // We only allow a maximum of MAX_AUDIO_VOICES voices to be stolen  
         // in each audio fragment. All subsequent request for spawning new  
         // voices in the same audio fragment will be ignored.  
         VoiceTheftsLeft = MAX_AUDIO_VOICES;  
   
         // reset internal voice counter (just for statistic of active voices)  
         ActiveVoiceCountTemp = 0;  
   
   
         // handle events on all engine channels  
         for (int i = 0; i < engineChannels.size(); i++) {  
             if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded  
             ProcessEvents(engineChannels[i], Samples);  
         }  
   
         // render all 'normal', active voices on all engine channels  
         for (int i = 0; i < engineChannels.size(); i++) {  
             if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded  
             RenderActiveVoices(engineChannels[i], Samples);  
         }  
   
         // now that all ordinary voices on ALL engine channels are rendered, render new stolen voices  
         RenderStolenVoices(Samples);  
   
         // handle cleanup on all engine channels for the next audio fragment  
         for (int i = 0; i < engineChannels.size(); i++) {  
             if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded  
             PostProcess(engineChannels[i]);  
         }  
   
   
         // empty the engine's event list for the next audio fragment  
         ClearEventLists();  
   
         // reset voice stealing for the next audio fragment  
         pVoiceStealingQueue->clear();  
         itLastStolenVoice  = RTList<Voice>::Iterator();  
         iuiLastStolenKey   = RTList<uint>::Iterator();  
         pLastStolenChannel = NULL;  
   
         // just some statistics about this engine instance  
         ActiveVoiceCount = ActiveVoiceCountTemp;  
         if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount;  
   
         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;  
                 }  
             }  
         }  
     }  
   
     /**  
      * 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) {  
         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.  
      *  
      * @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::RenderStolenVoices(uint Samples) {  
         RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first();  
         RTList<Event>::Iterator end               = pVoiceStealingQueue->end();  
         for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {  
             EngineChannel* pEngineChannel = (EngineChannel*) itVoiceStealEvent->pEngineChannel;  
             Pool<Voice>::Iterator itNewVoice =  
                 LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, 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();  
         }  
     }  
   
     /**  
      * Free all keys which have turned inactive in this audio fragment, from  
      * the list of active keys and clear all event lists on that engine  
      * channel.  
      *  
      * @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 DEVMODE  
                 else { // FIXME: should be removed before the final release (purpose: 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"));  
                         }  
                     }  
                 }  
                 #endif // DEVMODE  
             }  
         }  
   
         // empty the engine channel's own event lists  
         pEngineChannel->ClearEventLists();  
     }  
   
     /**  
      *  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;  
   
                 }  
                 // finally place sysex event into input event queue  
                 pEventQueue->push(&event);  
             }  
             else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,SYSEX_BUFFER_SIZE));  
         }  
         else dmsg(1,("Engine: Input event queue full!"));  
     }  
   
     /**  
      *  Assigns and triggers a new voice for the respective MIDI key.  
      *  
      *  @param pEngineChannel - engine channel on which this event occured on  
      *  @param itNoteOnEvent - key, velocity and time stamp of the event  
      */  
     void Engine::ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {  
   
         const int key = itNoteOnEvent->Param.Note.Key;  
   
         // 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 = ((key - pInstrument->DimensionKeyRange.low) * 128) /  
                     (pInstrument->DimensionKeyRange.high - pInstrument->DimensionKeyRange.low + 1);  
         }  
   
         midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[key];  
   
         pKey->KeyPressed = true; // the MIDI key was now pressed down  
   
         // 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 = *itNoteOnEvent;                  // copy event  
                 itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type  
             }  
             else dmsg(1,("Event pool emtpy!\n"));  
         }  
   
         // move note on event to the key's own event list  
         RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);  
   
         // 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);  
             }  
         }  
   
         // 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);  
   
         pKey->RoundRobinIndex++;  
     }  
   
     /**  
      *  Releases the voices on the given key if sustain pedal is not pressed.  
      *  If sustain is pressed, the release of the note will be postponed until  
      *  sustain pedal will be released or voice turned inactive by itself (e.g.  
      *  due to completion of sample playback).  
      *  
      *  @param pEngineChannel - engine channel on which this event occured on  
      *  @param itNoteOffEvent - key, velocity and time stamp of the event  
      */  
     void Engine::ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) {  
         midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key];  
   
         pKey->KeyPressed = false; // the MIDI key was now released  
   
         // release voices on this key if needed  
         if (pKey->Active && !pEngineChannel->SustainPedal) {  
             itNoteOffEvent->Type = Event::type_release; // transform event type  
         }  
   
         // move event to the key's own event list  
         RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);  
   
         // spawn release triggered voice(s) if needed  
         if (pKey->ReleaseTrigger) {  
             // 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;  
                 // now launch the required amount of voices  
                 for (int i = 0; i < voicesRequired; i++)  
                     LaunchVoice(pEngineChannel, itNoteOffEventOnKeyList, i, true, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples  
             }  
             pKey->ReleaseTrigger = false;  
         }  
   
         // if neither a voice was spawned or postponed then remove note off event from key again  
         if (!pKey->Active && !pKey->VoiceTheftsQueued)  
             pKey->pEvents->free(itNoteOffEventOnKeyList);  
     }  
   
     /**  
      *  Moves pitchbend event from the general (input) event list to the pitch  
      *  event list.  
      *  
      *  @param pEngineChannel - engine channel on which this event occured on  
      *  @param itPitchbendEvent - absolute pitch value and time stamp of the event  
      */  
     void Engine::ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent) {  
         pEngineChannel->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value  
         itPitchbendEvent.moveToEndOf(pEngineChannel->pSynthesisEvents[Event::destination_vco]);  
     }  
   
     /**  
      *  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)  
      *  @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) {  
         midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];  
   
         // allocate a new voice for the key  
         Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend();  
         if (itNewVoice) {  
             // launch the new voice  
             if (itNewVoice->Trigger(pEngineChannel, itNoteOnEvent, pEngineChannel->Pitch, pEngineChannel->pInstrument, iLayer, ReleaseTriggerVoice, VoiceStealing) < 0) {  
                 dmsg(4,("Voice not triggered\n"));  
                 pKey->pActiveVoices->free(itNewVoice);  
             }  
             else { // on success  
                 uint** ppKeyGroup = NULL;  
                 if (itNewVoice->KeyGroup) { // if this voice / key belongs to a key group  
                     ppKeyGroup = &pEngineChannel->ActiveKeyGroups[itNewVoice->KeyGroup];  
                     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);  
                         }  
                     }  
                 }  
                 if (!pKey->Active) { // mark as active key  
                     pKey->Active = true;  
                     pKey->itSelf = pEngineChannel->pActiveKeys->allocAppend();  
                     *pKey->itSelf = itNoteOnEvent->Param.Note.Key;  
                 }  
                 if (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 (!VoiceTheftsLeft) {  
             dmsg(1,("Max. voice thefts per audio fragment reached (you may raise MAX_AUDIO_VOICES).\n"));  
             return -1;  
         }  
         if (!pEventPool->poolIsEmpty()) {  
   
             RTList<Voice>::Iterator itSelectedVoice;  
   
             // Select one voice for voice stealing  
             switch (VOICE_STEAL_ALGORITHM) {  
   
                 // 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 there, then procceed with  
                 // 'oldestkey' algorithm  
                 case voice_steal_algo_oldestvoiceonkey: {  
                 #if 0 // FIXME: broken  
                     midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];  
                     if (this->itLastStolenVoice) {  
                         itSelectedVoice = this->itLastStolenVoice;  
                         ++itSelectedVoice;  
                     }  
                     else { // no voice stolen in this audio fragment cycle yet  
                         itSelectedVoice = pSelectedKey->pActiveVoices->first();  
                     }  
                     if (itSelectedVoice) {  
                         iuiSelectedKey = pSelectedKey->itSelf;  
                         break; // selection succeeded  
                     }  
                 #endif  
                 } // no break - intentional !  
   
                 // try to pick the oldest voice on the oldest active key  
                 // (caution: must stay after 'oldestvoiceonkey' algorithm !)  
                 case voice_steal_algo_oldestkey: {  
                     if (this->itLastStolenVoice) {  
                         itSelectedVoice = this->itLastStolenVoice;  
                         ++itSelectedVoice;  
                         if (itSelectedVoice) break; // selection succeeded  
                         RTList<uint>::Iterator iuiSelectedKey = this->iuiLastStolenKey;  
                         ++iuiSelectedKey;  
                         if (iuiSelectedKey) {  
                             this->iuiLastStolenKey = iuiSelectedKey;  
                             midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey];  
                             itSelectedVoice = pSelectedKey->pActiveVoices->first();  
                             break; // selection succeeded  
                         }  
                     }  
                     break;  
                 }  
   
                 // don't steal anything  
                 case voice_steal_algo_none:  
                 default: {  
                     dmsg(1,("No free voice (voice stealing disabled)!\n"));  
                     return -1;  
                 }  
             }  
   
             // steal oldest voice on the oldest key from this or any other engine channel  
             if (!itSelectedVoice) {  
                 EngineChannel* pSelectedChannel = (pLastStolenChannel) ? pLastStolenChannel : pEngineChannel;  
                 int iChannelIndex = pSelectedChannel->iEngineIndexSelf;  
                 while (true) {  
                     RTList<uint>::Iterator iuiSelectedKey = pSelectedChannel->pActiveKeys->first();  
                     if (iuiSelectedKey) {  
                         midi_key_info_t* pSelectedKey = &pSelectedChannel->pMIDIKeyInfo[*iuiSelectedKey];  
                         itSelectedVoice    = pSelectedKey->pActiveVoices->first();  
                         iuiLastStolenKey   = iuiSelectedKey;  
                         pLastStolenChannel = pSelectedChannel;  
                         break; // selection succeeded  
                     }  
                     iChannelIndex    = (iChannelIndex + 1) % engineChannels.size();  
                     pSelectedChannel =  engineChannels[iChannelIndex];  
                 }  
             }  
   
             //FIXME: can be removed, just a sanity check for debugging  
             if (!itSelectedVoice->IsActive()) {  
                 dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n"));  
                 return -1;  
             }  
   
             // now kill the selected voice  
             itSelectedVoice->Kill(itNoteOnEvent);  
   
             // remember which voice we stole, so we can simply proceed for the next voice stealing  
             itLastStolenVoice = itSelectedVoice;  
   
             --VoiceTheftsLeft;  
   
             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;  
   
             // 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"));  
36      }      }
37    
38      /**      /**
# Line 932  namespace LinuxSampler { namespace gig { Line 42  namespace LinuxSampler { namespace gig {
42       *  @param pEngineChannel - engine channel on which this event occured on       *  @param pEngineChannel - engine channel on which this event occured on
43       *  @param itControlChangeEvent - controller, value and time stamp of the event       *  @param itControlChangeEvent - controller, value and time stamp of the event
44       */       */
45      void Engine::ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent) {      void Engine::ProcessControlChange (
46            LinuxSampler::EngineChannel*  pEngineChannel,
47            Pool<Event>::Iterator&        itControlChangeEvent
48        ) {
49          dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value));          dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value));
50    
51          // update controller value in the engine channel's controller table          EngineChannel* pChannel = dynamic_cast<EngineChannel*>(pEngineChannel);
52          pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;          // handle the "control triggered" MIDI rule: a control change
53            // event can trigger a new note on or note off event
54          // move event from the unsorted event list to the control change event list          if (pChannel->pInstrument) {
55          Pool<Event>::Iterator itControlChangeEventOnCCList = itControlChangeEvent.moveToEndOf(pEngineChannel->pCCEvents);  
56                ::gig::MidiRule* rule;
57          switch (itControlChangeEventOnCCList->Param.CC.Controller) {              for (int i = 0 ; (rule = pChannel->pInstrument->GetMidiRule(i)) ; i++) {
58              case 7: { // volume  
59                  //TODO: not sample accurate yet                  if (::gig::MidiRuleCtrlTrigger* ctrlTrigger =
60                  pEngineChannel->GlobalVolume = (float) itControlChangeEventOnCCList->Param.CC.Value / 127.0f;                      dynamic_cast< ::gig::MidiRuleCtrlTrigger*>(rule)) {
61                  break;                      if (itControlChangeEvent->Param.CC.Controller ==
62              }                          ctrlTrigger->ControllerNumber) {
63              case 10: { // panpot  
64                  //TODO: not sample accurate yet                          uint8_t oldCCValue = pChannel->ControllerTable[
65                  const int pan = (int) itControlChangeEventOnCCList->Param.CC.Value - 64;                              itControlChangeEvent->Param.CC.Controller];
66                  pEngineChannel->GlobalPanLeft  = 1.0f - float(RTMath::Max(pan, 0)) /  63.0f;                          uint8_t newCCValue = itControlChangeEvent->Param.CC.Value;
67                  pEngineChannel->GlobalPanRight = 1.0f - float(RTMath::Min(pan, 0)) / -64.0f;  
68                  break;                          for (int i = 0 ; i < ctrlTrigger->Triggers ; i++) {
69              }                              ::gig::MidiRuleCtrlTrigger::trigger_t* pTrigger =
70              case 64: { // sustain                                    &ctrlTrigger->pTriggers[i];
71                  if (itControlChangeEventOnCCList->Param.CC.Value >= 64 && !pEngineChannel->SustainPedal) {  
72                      dmsg(4,("PEDAL DOWN\n"));                              // check if the controller has passed the
73                      pEngineChannel->SustainPedal = true;                              // trigger point in the right direction
74                                if ((pTrigger->Descending &&
75                      // cancel release process of voices if necessary                                   oldCCValue > pTrigger->TriggerPoint &&
76                      RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();                                   newCCValue <= pTrigger->TriggerPoint) ||
77                      for (; iuiKey; ++iuiKey) {                                  (!pTrigger->Descending &&
78                          midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];                                   oldCCValue < pTrigger->TriggerPoint &&
79                          if (!pKey->KeyPressed) {                                   newCCValue >= pTrigger->TriggerPoint)) {
80                              RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();  
81                              if (itNewEvent) {                                  RTList<Event>::Iterator itNewEvent = pGlobalEvents->allocAppend();
82                                  *itNewEvent = *itControlChangeEventOnCCList; // copy event to the key's own event list                                  if (itNewEvent) {
83                                  itNewEvent->Type = Event::type_cancel_release; // transform event type                                      *itNewEvent = *itControlChangeEvent;
84                                        itNewEvent->Param.Note.Key = pTrigger->Key;
85    
86                                        if (pTrigger->NoteOff || pTrigger->Velocity == 0) {
87                                            itNewEvent->Type = Event::type_note_off;
88                                            itNewEvent->Param.Note.Velocity = 100;
89    
90                                            ProcessNoteOff(pEngineChannel, itNewEvent);
91                                        } else {
92                                            itNewEvent->Type = Event::type_note_on;
93                                            //TODO: if Velocity is 255, the triggered velocity should
94                                            // depend on how fast the controller is moving
95                                            itNewEvent->Param.Note.Velocity =
96                                                pTrigger->Velocity == 255 ? 100 :
97                                                pTrigger->Velocity;
98    
99                                            ProcessNoteOn(pEngineChannel, itNewEvent);
100                                        }
101                                    }
102                                    else dmsg(1,("Event pool emtpy!\n"));
103                              }                              }
                             else dmsg(1,("Event pool emtpy!\n"));  
104                          }                          }
105                      }                      }
106                  }                  }
                 if (itControlChangeEventOnCCList->Param.CC.Value < 64 && pEngineChannel->SustainPedal) {  
                     dmsg(4,("PEDAL UP\n"));  
                     pEngineChannel->SustainPedal = false;  
   
                     // 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) {  
                             RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();  
                             if (itNewEvent) {  
                                 *itNewEvent = *itControlChangeEventOnCCList; // 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, itControlChangeEventOnCCList);  
                 break;  
             }  
             case 121: { // reset all controllers  
                 pEngineChannel->ResetControllers();  
                 break;  
             }  
             case 123: { // all notes off  
                 ReleaseAllVoices(pEngineChannel, itControlChangeEventOnCCList);  
                 break;  
             }  
         }  
     }  
   
     /**  
      *  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>::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  
                 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>::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  
                 }  
                 else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters  
                 }  
                 else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1)  
                     switch (addr[3]) {  
                         case 0x40: { // scale tuning  
                             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 (GSCheckSum(checksum_reader, 12) != checksum) goto free_sysex_data;  
                             for (int i = 0; i < 12; i++) scale_tunes[i] -= 64;  
                             AdjustScale((int8_t*) scale_tunes);  
                             break;  
                         }  
                     }  
                 }  
                 else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2)  
                 }  
                 else if (addr[0] == 0x41) { // Drum Setup Parameters  
                 }  
                 break;  
107              }              }
108          }          }
109    
110          free_sysex_data: // finally free sysex data          // update controller value in the engine channel's controller table
111          pSysexBuffer->increment_read_ptr(itSysexEvent->Param.Sysex.Size);          pChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;
     }  
112    
113      /**          ProcessHardcodedControllers(pEngineChannel, itControlChangeEvent);
      * 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>::NonVolatileReader AddrReader, uint DataSize) {  
         RingBuffer<uint8_t>::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;  
     }  
114    
115      /**          // handle FX send controllers
116       * Allows to tune each of the twelve semitones of an octave.          ProcessFxSendControllers(pChannel, itControlChangeEvent);
      *  
      * @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  
117      }      }
118    
119      /**      void Engine::ProcessChannelPressure(LinuxSampler::EngineChannel* pEngineChannel, Pool<Event>::Iterator& itChannelPressureEvent) {
120       * Releases all voices on an engine channel. All voices will go into          // if required: engine global aftertouch handling (apart from the per voice handling)
121       * the release stage and thus it might take some time (e.g. dependant to      }
122       * their envelope release time) until they actually die.  
123       *      void Engine::ProcessPolyphonicKeyPressure(LinuxSampler::EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNotePressureEvent) {
124       * @param pEngineChannel - engine channel on which all voices should be released          // if required: engine global aftertouch handling (apart from the per voice handling)
125       * @param itReleaseEvent - event which caused this releasing of all voices      }
126       */  
127      void Engine::ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent) {      DiskThread* Engine::CreateDiskThread() {
128          RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();          return new DiskThread (
129          while (iuiKey) {              iMaxDiskStreams,
130              midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];              ((pAudioOutputDevice->MaxSamplesPerCycle() << CONFIG_MAX_PITCH) << 1) + 6, //FIXME: assuming stereo
131              ++iuiKey;              &instruments
132              // append a 'release' event to the key's own event list          );
133              RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();      }
134              if (itNewEvent) {  
135                  *itNewEvent = *itReleaseEvent; // copy original event (to the key's event list)      void Engine::TriggerNewVoices (
136                  itNewEvent->Type = Event::type_release; // transform event type          LinuxSampler::EngineChannel* pEngineChannel,
137            RTList<Event>::Iterator&     itNoteOnEvent,
138            bool                         HandleKeyGroupConflicts
139        ) {
140            EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
141            // first, get total amount of required voices (dependant on amount of layers)
142            ::gig::Region* pRegion = pChannel->pInstrument->GetRegion(itNoteOnEvent->Param.Note.Key);
143            if (pRegion && !RegionSuspended(pRegion)) {
144                int voicesRequired = pRegion->Layers;
145                // now launch the required amount of voices
146                for (int i = 0; i < voicesRequired; i++)
147                    LaunchVoice(pChannel, itNoteOnEvent, i, false, true, HandleKeyGroupConflicts);
148            }
149        }
150    
151        void Engine::TriggerReleaseVoices (
152            LinuxSampler::EngineChannel*  pEngineChannel,
153            RTList<Event>::Iterator&      itNoteOffEvent
154        ) {
155            EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
156            MidiKey* pKey = &pChannel->pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key];
157            // first, get total amount of required voices (dependant on amount of layers)
158            ::gig::Region* pRegion = pChannel->pInstrument->GetRegion(itNoteOffEvent->Param.Note.Key);
159            if (pRegion) {
160                int voicesRequired = pRegion->Layers;
161    
162                // MIDI note-on velocity is used instead of note-off velocity
163                itNoteOffEvent->Param.Note.Velocity = pKey->Velocity;
164    
165                // now launch the required amount of voices
166                for (int i = 0; i < voicesRequired; i++)
167                    LaunchVoice(pChannel, itNoteOffEvent, i, true, false, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples
168            }
169        }
170    
171        Pool<Voice>::Iterator Engine::LaunchVoice (
172            LinuxSampler::EngineChannel*  pEngineChannel,
173            Pool<Event>::Iterator&        itNoteOnEvent,
174            int                           iLayer,
175            bool                          ReleaseTriggerVoice,
176            bool                          VoiceStealing,
177            bool                          HandleKeyGroupConflicts
178        ) {
179            EngineChannel* pChannel = static_cast<EngineChannel*>(pEngineChannel);
180            int MIDIKey = itNoteOnEvent->Param.Note.Key;
181            EngineChannel::MidiKey* pKey  = &pChannel->pMIDIKeyInfo[MIDIKey];
182            ::gig::Region* pRegion = pChannel->pInstrument->GetRegion(MIDIKey);
183    
184            // if nothing defined for this key
185            if (!pRegion) return Pool<Voice>::Iterator(); // nothing to do
186    
187            int iKeyGroup = pRegion->KeyGroup;
188            // only need to send a group event from the first voice in a layered region,
189            // as all layers in a region always belongs to the same key group
190            if (HandleKeyGroupConflicts && iLayer == 0) pChannel->HandleKeyGroupConflicts(iKeyGroup, itNoteOnEvent);
191    
192            Voice::type_t VoiceType = Voice::type_normal;
193    
194            // get current dimension values to select the right dimension region
195            //TODO: for stolen voices this dimension region selection block is processed twice, this should be changed
196            //FIXME: controller values for selecting the dimension region here are currently not sample accurate
197            uint DimValues[8] = { 0 };
198            for (int i = pRegion->Dimensions - 1; i >= 0; i--) {
199                switch (pRegion->pDimensionDefinitions[i].dimension) {
200                    case ::gig::dimension_samplechannel:
201                        DimValues[i] = 0; //TODO: we currently ignore this dimension
202                        break;
203                    case ::gig::dimension_layer:
204                        DimValues[i] = iLayer;
205                        break;
206                    case ::gig::dimension_velocity:
207                        DimValues[i] = itNoteOnEvent->Param.Note.Velocity;
208                        break;
209                    case ::gig::dimension_channelaftertouch:
210                        DimValues[i] = pChannel->ControllerTable[128];
211                        break;
212                    case ::gig::dimension_releasetrigger:
213                        VoiceType = (ReleaseTriggerVoice) ? Voice::type_release_trigger : (!iLayer) ? Voice::type_release_trigger_required : Voice::type_normal;
214                        DimValues[i] = (uint) ReleaseTriggerVoice;
215                        break;
216                    case ::gig::dimension_keyboard:
217                        DimValues[i] = (uint) (pChannel->CurrentKeyDimension * pRegion->pDimensionDefinitions[i].zones);
218                        break;
219                    case ::gig::dimension_roundrobin:
220                        DimValues[i] = uint(*pChannel->pMIDIKeyInfo[MIDIKey].pRoundRobinIndex % pRegion->pDimensionDefinitions[i].zones); // RoundRobinIndex is incremented for each note on in this Region
221                        break;
222                    case ::gig::dimension_roundrobinkeyboard:
223                        DimValues[i] = uint(pChannel->RoundRobinIndex % pRegion->pDimensionDefinitions[i].zones); // RoundRobinIndex is incremented for each note on
224                        break;
225                    case ::gig::dimension_random:
226                        DimValues[i] = uint(Random() * pRegion->pDimensionDefinitions[i].zones);
227                        break;
228                    case ::gig::dimension_smartmidi:
229                        DimValues[i] = 0;
230                        break;
231                    case ::gig::dimension_modwheel:
232                        DimValues[i] = pChannel->ControllerTable[1];
233                        break;
234                    case ::gig::dimension_breath:
235                        DimValues[i] = pChannel->ControllerTable[2];
236                        break;
237                    case ::gig::dimension_foot:
238                        DimValues[i] = pChannel->ControllerTable[4];
239                        break;
240                    case ::gig::dimension_portamentotime:
241                        DimValues[i] = pChannel->ControllerTable[5];
242                        break;
243                    case ::gig::dimension_effect1:
244                        DimValues[i] = pChannel->ControllerTable[12];
245                        break;
246                    case ::gig::dimension_effect2:
247                        DimValues[i] = pChannel->ControllerTable[13];
248                        break;
249                    case ::gig::dimension_genpurpose1:
250                        DimValues[i] = pChannel->ControllerTable[16];
251                        break;
252                    case ::gig::dimension_genpurpose2:
253                        DimValues[i] = pChannel->ControllerTable[17];
254                        break;
255                    case ::gig::dimension_genpurpose3:
256                        DimValues[i] = pChannel->ControllerTable[18];
257                        break;
258                    case ::gig::dimension_genpurpose4:
259                        DimValues[i] = pChannel->ControllerTable[19];
260                        break;
261                    case ::gig::dimension_sustainpedal:
262                        DimValues[i] = pChannel->ControllerTable[64];
263                        break;
264                    case ::gig::dimension_portamento:
265                        DimValues[i] = pChannel->ControllerTable[65];
266                        break;
267                    case ::gig::dimension_sostenutopedal:
268                        DimValues[i] = pChannel->ControllerTable[66];
269                        break;
270                    case ::gig::dimension_softpedal:
271                        DimValues[i] = pChannel->ControllerTable[67];
272                        break;
273                    case ::gig::dimension_genpurpose5:
274                        DimValues[i] = pChannel->ControllerTable[80];
275                        break;
276                    case ::gig::dimension_genpurpose6:
277                        DimValues[i] = pChannel->ControllerTable[81];
278                        break;
279                    case ::gig::dimension_genpurpose7:
280                        DimValues[i] = pChannel->ControllerTable[82];
281                        break;
282                    case ::gig::dimension_genpurpose8:
283                        DimValues[i] = pChannel->ControllerTable[83];
284                        break;
285                    case ::gig::dimension_effect1depth:
286                        DimValues[i] = pChannel->ControllerTable[91];
287                        break;
288                    case ::gig::dimension_effect2depth:
289                        DimValues[i] = pChannel->ControllerTable[92];
290                        break;
291                    case ::gig::dimension_effect3depth:
292                        DimValues[i] = pChannel->ControllerTable[93];
293                        break;
294                    case ::gig::dimension_effect4depth:
295                        DimValues[i] = pChannel->ControllerTable[94];
296                        break;
297                    case ::gig::dimension_effect5depth:
298                        DimValues[i] = pChannel->ControllerTable[95];
299                        break;
300                    case ::gig::dimension_none:
301                        std::cerr << "gig::Engine::LaunchVoice() Error: dimension=none\n" << std::flush;
302                        break;
303                    default:
304                        std::cerr << "gig::Engine::LaunchVoice() Error: Unknown dimension\n" << std::flush;
305              }              }
             else dmsg(1,("Event pool emtpy!\n"));  
306          }          }
     }  
307    
308      /**          // return if this is a release triggered voice and there is no
309       * Kills all voices on an engine channel as soon as possible. Voices          // releasetrigger dimension (could happen if an instrument
310       * won't get into release state, their volume level will be ramped down          // change has occured between note on and off)
311       * as fast as possible.          if (ReleaseTriggerVoice && !(VoiceType & Voice::type_release_trigger)) return Pool<Voice>::Iterator();
312       *  
313       * @param pEngineChannel - engine channel on which all voices should be killed          
314       * @param itKillEvent    - event which caused this killing of all voices          ::gig::DimensionRegion* pDimRgn;
315       */          if (!itNoteOnEvent->Format.Gig.DimMask) { // normal case ...
316      void Engine::KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent) {              pDimRgn = pRegion->GetDimensionRegionByValue(DimValues);
317          RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();          } else { // some dimension zones were overridden (i.e. by instrument script) ...
318          RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();              dmsg(3,("trigger with dim mask=%d val=%d\n", itNoteOnEvent->Format.Gig.DimMask, itNoteOnEvent->Format.Gig.DimBits));
319          while (iuiKey != end) { // iterate through all active keys              int index = pRegion->GetDimensionRegionIndexByValue(DimValues);
320              midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];              index &= ~itNoteOnEvent->Format.Gig.DimMask;
321              ++iuiKey;              index |=  itNoteOnEvent->Format.Gig.DimBits & itNoteOnEvent->Format.Gig.DimMask;
322              RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();              pDimRgn = pRegion->pDimensionRegions[index & 255];
             RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();  
             for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key  
                 itVoice->Kill(itKillEvent);  
             }  
323          }          }
324      }          if (!pDimRgn) return Pool<Voice>::Iterator(); // error (could not resolve dimension region)
325    
326      /**          // no need to continue if sample is silent
327       * Initialize the parameter sequence for the modulation destination given by          if (!pDimRgn->pSample || !pDimRgn->pSample->SamplesTotal) return Pool<Voice>::Iterator();
      * by 'dst' with the constant value given by val.  
      */  
     void Engine::ResetSynthesisParameters(Event::destination_t dst, float val) {  
         int maxsamples = pAudioOutputDevice->MaxSamplesPerCycle();  
         float* m = &pSynthesisParameters[dst][0];  
         for (int i = 0; i < maxsamples; i += 4) {  
            m[i]   = val;  
            m[i+1] = val;  
            m[i+2] = val;  
            m[i+3] = val;  
         }  
     }  
328    
329      uint Engine::VoiceCount() {          // allocate a new voice for the key
330          return ActiveVoiceCount;          Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend();
331      }  
332            int res = InitNewVoice (
333                    pChannel, pDimRgn, itNoteOnEvent, VoiceType, iLayer,
334                    iKeyGroup, ReleaseTriggerVoice, VoiceStealing, itNewVoice
335            );
336            if (!res) return itNewVoice;
337    
338      uint Engine::VoiceCountMax() {          return Pool<Voice>::Iterator(); // no free voice or error
         return ActiveVoiceCountMax;  
339      }      }
340    
341      bool Engine::DiskStreamSupported() {      bool Engine::DiskStreamSupported() {
342          return true;          return true;
343      }      }
344    
     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;  
     }  
   
345      String Engine::Description() {      String Engine::Description() {
346          return "Gigasampler Engine";          return "GigaSampler Format Engine";
347      }      }
348    
349      String Engine::Version() {      String Engine::Version() {
350          String s = "$Revision: 1.34 $";          String s = "$Revision$";
351          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
352      }      }
353    
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