/[svn]/linuxsampler/trunk/src/engines/gig/Engine.cpp
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revision 271 by schoenebeck, Fri Oct 8 20:51:39 2004 UTC revision 424 by schoenebeck, Fri Mar 4 22:54:11 2005 UTC
# Line 3  Line 3 
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                              *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
9   *   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 23  Line 24 
24  #include <sstream>  #include <sstream>
25  #include "DiskThread.h"  #include "DiskThread.h"
26  #include "Voice.h"  #include "Voice.h"
27    #include "EGADSR.h"
28    #include "../EngineFactory.h"
29    
30  #include "Engine.h"  #include "Engine.h"
31    
32    #if defined(__APPLE__)
33    # include <stdlib.h>
34    #else
35    # include <malloc.h>
36    #endif
37    
38  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
39    
40      InstrumentResourceManager Engine::Instruments;      InstrumentResourceManager Engine::instruments;
41    
42        std::map<AudioOutputDevice*,Engine*> Engine::engines;
43    
44        /**
45         * Get a gig::Engine object for the given gig::EngineChannel and the
46         * given AudioOutputDevice. All engine channels which are connected to
47         * the same audio output device will use the same engine instance. This
48         * method will be called by a gig::EngineChannel whenever it's
49         * connecting to a audio output device.
50         *
51         * @param pChannel - engine channel which acquires an engine object
52         * @param pDevice  - the audio output device \a pChannel is connected to
53         */
54        Engine* Engine::AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) {
55            Engine* pEngine = NULL;
56            // check if there's already an engine for the given audio output device
57            if (engines.count(pDevice)) {
58                dmsg(4,("Using existing gig::Engine.\n"));
59                pEngine = engines[pDevice];            
60            } else { // create a new engine (and disk thread) instance for the given audio output device
61                dmsg(4,("Creating new gig::Engine.\n"));
62                pEngine = (Engine*) EngineFactory::Create("gig");
63                pEngine->Connect(pDevice);
64                engines[pDevice] = pEngine;            
65            }
66            // register engine channel to the engine instance
67            pEngine->engineChannels.push_back(pChannel);
68            dmsg(4,("This gig::Engine has now %d EngineChannels.\n",pEngine->engineChannels.size()));
69            return pEngine;
70        }
71    
72        /**
73         * Once an engine channel is disconnected from an audio output device,
74         * it wil immediately call this method to unregister itself from the
75         * engine instance and if that engine instance is not used by any other
76         * engine channel anymore, then that engine instance will be destroyed.
77         *
78         * @param pChannel - engine channel which wants to disconnect from it's
79         *                   engine instance
80         * @param pDevice  - audio output device \a pChannel was connected to
81         */
82        void Engine::FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) {
83            dmsg(4,("Disconnecting EngineChannel from gig::Engine.\n"));
84            Engine* pEngine = engines[pDevice];
85            // unregister EngineChannel from the Engine instance
86            pEngine->engineChannels.remove(pChannel);
87            // if the used Engine instance is not used anymore, then destroy it
88            if (pEngine->engineChannels.empty()) {
89                pDevice->Disconnect(pEngine);
90                engines.erase(pDevice);
91                delete pEngine;
92                dmsg(4,("Destroying gig::Engine.\n"));
93            }
94            else dmsg(4,("This gig::Engine has now %d EngineChannels.\n",pEngine->engineChannels.size()));
95        }
96    
97      Engine::Engine() {      Engine::Engine() {
         pRIFF              = NULL;  
         pGig               = NULL;  
         pInstrument        = NULL;  
98          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
99          pDiskThread        = NULL;          pDiskThread        = NULL;
100          pEventGenerator    = NULL;          pEventGenerator    = NULL;
101          pSysexBuffer       = new RingBuffer<uint8_t>(SYSEX_BUFFER_SIZE, 0);          pSysexBuffer       = new RingBuffer<uint8_t>(SYSEX_BUFFER_SIZE, 0);
102          pEventQueue        = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0);          pEventQueue        = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0);
103          pEventPool         = new Pool<Event>(MAX_EVENTS_PER_FRAGMENT);          pEventPool         = new Pool<Event>(MAX_EVENTS_PER_FRAGMENT);
104          pVoicePool         = new Pool<Voice>(MAX_AUDIO_VOICES);          pVoicePool         = new Pool<Voice>(MAX_AUDIO_VOICES);        
         pActiveKeys        = new Pool<uint>(128);  
105          pVoiceStealingQueue = new RTList<Event>(pEventPool);          pVoiceStealingQueue = new RTList<Event>(pEventPool);
106          pEvents            = new RTList<Event>(pEventPool);          pEvents            = new RTList<Event>(pEventPool);
107          pCCEvents          = new RTList<Event>(pEventPool);          pCCEvents          = new RTList<Event>(pEventPool);
108            
109          for (uint i = 0; i < Event::destination_count; i++) {          for (uint i = 0; i < Event::destination_count; i++) {
110              pSynthesisEvents[i] = new RTList<Event>(pEventPool);              pSynthesisEvents[i] = new RTList<Event>(pEventPool);
111          }          }
         for (uint i = 0; i < 128; i++) {  
             pMIDIKeyInfo[i].pActiveVoices  = new RTList<Voice>(pVoicePool);  
             pMIDIKeyInfo[i].KeyPressed     = false;  
             pMIDIKeyInfo[i].Active         = false;  
             pMIDIKeyInfo[i].ReleaseTrigger = false;  
             pMIDIKeyInfo[i].pEvents        = new RTList<Event>(pEventPool);  
         }  
112          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
113              iterVoice->SetEngine(this);              iterVoice->SetEngine(this);
114          }          }
# Line 64  namespace LinuxSampler { namespace gig { Line 118  namespace LinuxSampler { namespace gig {
118          pBasicFilterParameters  = NULL;          pBasicFilterParameters  = NULL;
119          pMainFilterParameters   = NULL;          pMainFilterParameters   = NULL;
120    
         InstrumentIdx = -1;  
         InstrumentStat = -1;  
   
         AudioDeviceChannelLeft  = -1;  
         AudioDeviceChannelRight = -1;  
   
121          ResetInternal();          ResetInternal();
122      }      }
123    
124      Engine::~Engine() {      Engine::~Engine() {
125          if (pDiskThread) {          if (pDiskThread) {
126                dmsg(1,("Stopping disk thread..."));
127              pDiskThread->StopThread();              pDiskThread->StopThread();
128              delete pDiskThread;              delete pDiskThread;
129          }              dmsg(1,("OK\n"));
         if (pGig)  delete pGig;  
         if (pRIFF) delete pRIFF;  
         for (uint i = 0; i < 128; i++) {  
             if (pMIDIKeyInfo[i].pActiveVoices) delete pMIDIKeyInfo[i].pActiveVoices;  
             if (pMIDIKeyInfo[i].pEvents)       delete pMIDIKeyInfo[i].pEvents;  
130          }          }
131          for (uint i = 0; i < Event::destination_count; i++) {          for (uint i = 0; i < Event::destination_count; i++) {
132              if (pSynthesisEvents[i]) delete pSynthesisEvents[i];              if (pSynthesisEvents[i]) delete pSynthesisEvents[i];
133          }          }
         delete[] pSynthesisEvents;  
134          if (pEvents)     delete pEvents;          if (pEvents)     delete pEvents;
135          if (pCCEvents)   delete pCCEvents;          if (pCCEvents)   delete pCCEvents;
136          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
137          if (pEventPool)  delete pEventPool;          if (pEventPool)  delete pEventPool;
138          if (pVoicePool)  delete pVoicePool;          if (pVoicePool) {
139          if (pActiveKeys) delete pActiveKeys;              pVoicePool->clear();
140          if (pSysexBuffer) delete pSysexBuffer;              delete pVoicePool;
141            }
142          if (pEventGenerator) delete pEventGenerator;          if (pEventGenerator) delete pEventGenerator;
143          if (pMainFilterParameters) delete[] pMainFilterParameters;          if (pMainFilterParameters) delete[] pMainFilterParameters;
144          if (pBasicFilterParameters) delete[] pBasicFilterParameters;          if (pBasicFilterParameters) delete[] pBasicFilterParameters;
145          if (pSynthesisParameters[0]) delete[] pSynthesisParameters[0];          if (pSynthesisParameters[0]) free(pSynthesisParameters[0]);
146          if (pVoiceStealingQueue) delete pVoiceStealingQueue;          if (pVoiceStealingQueue) delete pVoiceStealingQueue;
147            if (pSysexBuffer) delete pSysexBuffer;
148            EngineFactory::Destroy(this);
149      }      }
150    
151      void Engine::Enable() {      void Engine::Enable() {
# Line 126  namespace LinuxSampler { namespace gig { Line 172  namespace LinuxSampler { namespace gig {
172       */       */
173      void Engine::Reset() {      void Engine::Reset() {
174          DisableAndLock();          DisableAndLock();
   
         //if (pAudioOutputDevice->IsPlaying()) { // if already running  
             /*  
             // signal audio thread not to enter render part anymore  
             SuspensionRequested = true;  
             // sleep until wakened by audio thread  
             pthread_mutex_lock(&__render_state_mutex);  
             pthread_cond_wait(&__render_exit_condition, &__render_state_mutex);  
             pthread_mutex_unlock(&__render_state_mutex);  
             */  
         //}  
   
         //if (wasplaying) pAudioOutputDevice->Stop();  
   
175          ResetInternal();          ResetInternal();
   
         // signal audio thread to continue with rendering  
         //SuspensionRequested = false;  
176          Enable();          Enable();
177      }      }
178    
# Line 152  namespace LinuxSampler { namespace gig { Line 181  namespace LinuxSampler { namespace gig {
181       *  control and status variables. This method is not thread safe!       *  control and status variables. This method is not thread safe!
182       */       */
183      void Engine::ResetInternal() {      void Engine::ResetInternal() {
         Pitch               = 0;  
         SustainPedal        = false;  
184          ActiveVoiceCount    = 0;          ActiveVoiceCount    = 0;
185          ActiveVoiceCountMax = 0;          ActiveVoiceCountMax = 0;
         GlobalVolume        = 1.0;  
186    
187          // reset voice stealing parameters          // reset voice stealing parameters
         itLastStolenVoice = RTList<Voice>::Iterator();  
         iuiLastStolenKey  = RTList<uint>::Iterator();  
188          pVoiceStealingQueue->clear();          pVoiceStealingQueue->clear();
189    
190          // reset to normal chromatic scale (means equal temper)          // reset to normal chromatic scale (means equal temper)
191          memset(&ScaleTuning[0], 0x00, 12);          memset(&ScaleTuning[0], 0x00, 12);
192    
         // set all MIDI controller values to zero  
         memset(ControllerTable, 0x00, 128);  
   
         // reset key info  
         for (uint i = 0; i < 128; i++) {  
             pMIDIKeyInfo[i].pActiveVoices->clear();  
             pMIDIKeyInfo[i].pEvents->clear();  
             pMIDIKeyInfo[i].KeyPressed     = false;  
             pMIDIKeyInfo[i].Active         = false;  
             pMIDIKeyInfo[i].ReleaseTrigger = false;  
             pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();  
         }  
   
         // reset all key groups  
         map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();  
         for (; iter != ActiveKeyGroups.end(); iter++) iter->second = NULL;  
   
193          // reset all voices          // reset all voices
194          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
195              iterVoice->Reset();              iterVoice->Reset();
196          }          }
197          pVoicePool->clear();          pVoicePool->clear();
198    
         // free all active keys  
         pActiveKeys->clear();  
   
199          // reset disk thread          // reset disk thread
200          if (pDiskThread) pDiskThread->Reset();          if (pDiskThread) pDiskThread->Reset();
201    
202          // delete all input events          // delete all input events
203          pEventQueue->init();          pEventQueue->init();
204      }      }    
   
     /**  
      *  Load an instrument from a .gig file.  
      *  
      *  @param FileName   - file name of the Gigasampler instrument file  
      *  @param Instrument - index of the instrument in the .gig file  
      *  @throws LinuxSamplerException  on error  
      *  @returns          detailed description of the method call result  
      */  
     void Engine::LoadInstrument(const char* FileName, uint Instrument) {  
   
         DisableAndLock();  
   
         ResetInternal(); // reset engine  
   
         // free old instrument  
         if (pInstrument) {  
             // give old instrument back to instrument manager  
             Instruments.HandBack(pInstrument, this);  
         }  
   
         InstrumentFile = FileName;  
         InstrumentIdx = Instrument;  
         InstrumentStat = 0;  
   
         // delete all key groups  
         ActiveKeyGroups.clear();  
   
         // request gig instrument from instrument manager  
         try {  
             instrument_id_t instrid;  
             instrid.FileName    = FileName;  
             instrid.iInstrument = Instrument;  
             pInstrument = Instruments.Borrow(instrid, this);  
             if (!pInstrument) {  
                 InstrumentStat = -1;  
                 dmsg(1,("no instrument loaded!!!\n"));  
                 exit(EXIT_FAILURE);  
             }  
         }  
         catch (RIFF::Exception e) {  
             InstrumentStat = -2;  
             String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;  
             throw LinuxSamplerException(msg);  
         }  
         catch (InstrumentResourceManagerException e) {  
             InstrumentStat = -3;  
             String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();  
             throw LinuxSamplerException(msg);  
         }  
         catch (...) {  
             InstrumentStat = -4;  
             throw LinuxSamplerException("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file.");  
         }  
   
         // rebuild ActiveKeyGroups map with key groups of current instrument  
         for (::gig::Region* pRegion = pInstrument->GetFirstRegion(); pRegion; pRegion = pInstrument->GetNextRegion())  
             if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL;  
   
         InstrumentStat = 100;  
   
         // inform audio driver for the need of two channels  
         try {  
             if (pAudioOutputDevice) 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);  
         }  
   
         Enable();  
     }  
   
     /**  
      * Will be called by the InstrumentResourceManager when the instrument  
      * we are currently using in this engine is going to be updated, so we  
      * can stop playback before that happens.  
      */  
     void Engine::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {  
         dmsg(3,("gig::Engine: Received instrument update message.\n"));  
         DisableAndLock();  
         ResetInternal();  
         this->pInstrument = NULL;  
     }  
   
     /**  
      * Will be called by the InstrumentResourceManager when the instrument  
      * update process was completed, so we can continue with playback.  
      */  
     void Engine::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {  
         this->pInstrument = pNewResource; //TODO: there are couple of engine parameters we should update here as well if the instrument was updated (see LoadInstrument())  
         Enable();  
     }  
205    
206      void Engine::Connect(AudioOutputDevice* pAudioOut) {      void Engine::Connect(AudioOutputDevice* pAudioOut) {
207          pAudioOutputDevice = pAudioOut;          pAudioOutputDevice = pAudioOut;
# Line 305  namespace LinuxSampler { namespace gig { Line 216  namespace LinuxSampler { namespace gig {
216              String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message();              String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message();
217              throw LinuxSamplerException(msg);              throw LinuxSamplerException(msg);
218          }          }
219            
         this->AudioDeviceChannelLeft  = 0;  
         this->AudioDeviceChannelRight = 1;  
         this->pOutputLeft             = pAudioOutputDevice->Channel(0)->Buffer();  
         this->pOutputRight            = pAudioOutputDevice->Channel(1)->Buffer();  
220          this->MaxSamplesPerCycle      = pAudioOutputDevice->MaxSamplesPerCycle();          this->MaxSamplesPerCycle      = pAudioOutputDevice->MaxSamplesPerCycle();
221          this->SampleRate              = pAudioOutputDevice->SampleRate();          this->SampleRate              = pAudioOutputDevice->SampleRate();
222    
223            // FIXME: audio drivers with varying fragment sizes might be a problem here
224            MaxFadeOutPos = MaxSamplesPerCycle - int(double(SampleRate) * EG_MIN_RELEASE_TIME) - 1;
225            if (MaxFadeOutPos < 0)
226                throw LinuxSamplerException("EG_MIN_RELEASE_TIME in EGADSR.h too big for current audio fragment size / sampling rate!");
227    
228          // (re)create disk thread          // (re)create disk thread
229          if (this->pDiskThread) {          if (this->pDiskThread) {
230                dmsg(1,("Stopping disk thread..."));
231              this->pDiskThread->StopThread();              this->pDiskThread->StopThread();
232              delete this->pDiskThread;              delete this->pDiskThread;
233                dmsg(1,("OK\n"));
234          }          }
235          this->pDiskThread = new DiskThread(((pAudioOut->MaxSamplesPerCycle() << MAX_PITCH) << 1) + 6); //FIXME: assuming stereo          this->pDiskThread = new DiskThread(((pAudioOut->MaxSamplesPerCycle() << MAX_PITCH) << 1) + 6); //FIXME: assuming stereo
236          if (!pDiskThread) {          if (!pDiskThread) {
# Line 335  namespace LinuxSampler { namespace gig { Line 249  namespace LinuxSampler { namespace gig {
249          pEventGenerator = new EventGenerator(pAudioOut->SampleRate());          pEventGenerator = new EventGenerator(pAudioOut->SampleRate());
250    
251          // (re)allocate synthesis parameter matrix          // (re)allocate synthesis parameter matrix
252          if (pSynthesisParameters[0]) delete[] pSynthesisParameters[0];          if (pSynthesisParameters[0]) free(pSynthesisParameters[0]);
253          pSynthesisParameters[0] = new float[Event::destination_count * pAudioOut->MaxSamplesPerCycle()];  
254            #if defined(__APPLE__)
255            pSynthesisParameters[0] = (float *) malloc(Event::destination_count * sizeof(float) * pAudioOut->MaxSamplesPerCycle());
256            #else
257            pSynthesisParameters[0] = (float *) memalign(16,(Event::destination_count * sizeof(float) * pAudioOut->MaxSamplesPerCycle()));
258            #endif
259          for (int dst = 1; dst < Event::destination_count; dst++)          for (int dst = 1; dst < Event::destination_count; dst++)
260              pSynthesisParameters[dst] = pSynthesisParameters[dst - 1] + pAudioOut->MaxSamplesPerCycle();              pSynthesisParameters[dst] = pSynthesisParameters[dst - 1] + pAudioOut->MaxSamplesPerCycle();
261    
# Line 358  namespace LinuxSampler { namespace gig { Line 277  namespace LinuxSampler { namespace gig {
277          }          }
278      }      }
279    
280      void Engine::DisconnectAudioOutputDevice() {      void Engine::ClearEventLists() {
281          if (pAudioOutputDevice) { // if clause to prevent disconnect loops          pEvents->clear();
282              AudioOutputDevice* olddevice = pAudioOutputDevice;          pCCEvents->clear();
283              pAudioOutputDevice = NULL;          for (uint i = 0; i < Event::destination_count; i++) {
284              olddevice->Disconnect(this);              pSynthesisEvents[i]->clear();
             AudioDeviceChannelLeft  = -1;  
             AudioDeviceChannelRight = -1;  
285          }          }
286      }      }
287    
288      /**      /**
289         * Copy all events from the given input queue buffer to the engine's
290         * internal event list. This will be done at the beginning of each audio
291         * cycle (that is each RenderAudio() call) to get all events which have
292         * to be processed in the current audio cycle. Each EngineChannel has
293         * it's own input event queue for the common channel specific events
294         * (like NoteOn, NoteOff and ControlChange events). Beside that, the
295         * engine also has a input event queue for global events (usually SysEx
296         * message).
297         *
298         * @param pEventQueue - input event buffer to read from
299         * @param Samples     - number of sample points to be processed in the
300         *                      current audio cycle
301         */
302        void Engine::ImportEvents(RingBuffer<Event>* pEventQueue, uint Samples) {
303            RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
304            Event* pEvent;
305            while (true) {
306                // get next event from input event queue
307                if (!(pEvent = eventQueueReader.pop())) break;
308                // if younger event reached, ignore that and all subsequent ones for now
309                if (pEvent->FragmentPos() >= Samples) {
310                    eventQueueReader--;
311                    dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
312                    pEvent->ResetFragmentPos();
313                    break;
314                }
315                // copy event to internal event list
316                if (pEvents->poolIsEmpty()) {
317                    dmsg(1,("Event pool emtpy!\n"));
318                    break;
319                }
320                *pEvents->allocAppend() = *pEvent;
321            }
322            eventQueueReader.free(); // free all copied events from input queue
323        }    
324    
325        /**
326       *  Let this engine proceed to render the given amount of sample points. The       *  Let this engine proceed to render the given amount of sample points. The
327       *  calculated audio data of all voices of this engine will be placed into       *  calculated audio data of all voices of this engine will be placed into
328       *  the engine's audio sum buffer which has to be copied and eventually be       *  the engine's audio sum buffer which has to be copied and eventually be
# Line 381  namespace LinuxSampler { namespace gig { Line 335  namespace LinuxSampler { namespace gig {
335      int Engine::RenderAudio(uint Samples) {      int Engine::RenderAudio(uint Samples) {
336          dmsg(5,("RenderAudio(Samples=%d)\n", Samples));          dmsg(5,("RenderAudio(Samples=%d)\n", Samples));
337    
338          // return if no instrument loaded or engine disabled          // return if engine disabled
339          if (EngineDisabled.Pop()) {          if (EngineDisabled.Pop()) {
340              dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe()));              dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe()));
341              return 0;              return 0;
342          }          }
         if (!pInstrument) {  
             dmsg(5,("gig::Engine: no instrument loaded\n"));  
             return 0;  
         }  
343    
344            // update time of start and end of this audio fragment (as events' time stamps relate to this)
345            pEventGenerator->UpdateFragmentTime(Samples);
346    
347          // empty the event lists for the new fragment          // empty the engine's event lists for the new fragment
348          pEvents->clear();          ClearEventLists();
349          pCCEvents->clear();  
350          for (uint i = 0; i < Event::destination_count; i++) {          // get all events from the engine's global input event queue which belong to the current fragment
351              pSynthesisEvents[i]->clear();          // (these are usually just SysEx messages)
352            ImportEvents(this->pEventQueue, Samples);
353    
354            // process engine global events (these are currently only MIDI System Exclusive messages)
355            {
356                RTList<Event>::Iterator itEvent = pEvents->first();
357                RTList<Event>::Iterator end     = pEvents->end();
358                for (; itEvent != end; ++itEvent) {
359                    switch (itEvent->Type) {
360                        case Event::type_sysex:
361                            dmsg(5,("Engine: Sysex received\n"));
362                            ProcessSysex(itEvent);
363                            break;
364                    }
365                }
366          }          }
367    
368            // reset internal voice counter (just for statistic of active voices)
369            ActiveVoiceCountTemp = 0;
370    
371            // render audio for all engine channels
372            // TODO: should we make voice stealing engine globally? unfortunately this would mean other disadvantages so I left voice stealing in the engine channel space for now
373          {          {
374              RTList<uint>::Iterator iuiKey = pActiveKeys->first();              std::list<EngineChannel*>::iterator itChannel = engineChannels.begin();
375              RTList<uint>::Iterator end    = pActiveKeys->end();              std::list<EngineChannel*>::iterator end       = engineChannels.end();
376              for(; iuiKey != end; ++iuiKey) {              for (; itChannel != end; itChannel++) {
377                  pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key                  if (!(*itChannel)->pInstrument) continue; // ignore if no instrument loaded
378                    RenderAudio(*itChannel, Samples);
379              }              }
380          }          }
381    
382          // read and copy events from input queue          // just some statistics about this engine instance
383          Event event = pEventGenerator->CreateEvent();          ActiveVoiceCount = ActiveVoiceCountTemp;
384          while (true) {          if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount;
385              if (!pEventQueue->pop(&event) || pEvents->poolIsEmpty()) break;  
386              *pEvents->allocAppend() = event;          return 0;
387        }
388    
389        void Engine::RenderAudio(EngineChannel* pEngineChannel, uint Samples) {
390            // empty the engine's event lists for the new fragment
391            ClearEventLists();
392            // empty the engine channel's, MIDI key specific event lists
393            {
394                RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
395                RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();
396                for(; iuiKey != end; ++iuiKey) {
397                    pEngineChannel->pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
398                }
399          }          }
400    
401    
402          // update time of start and end of this audio fragment (as events' time stamps relate to this)          // get all events from the engine channels's input event queue which belong to the current fragment
403          pEventGenerator->UpdateFragmentTime(Samples);          // (these are the common events like NoteOn, NoteOff, ControlChange, etc.)
404            ImportEvents(pEngineChannel->pEventQueue, Samples);      
405    
406    
407          // process events          // process events
# Line 426  namespace LinuxSampler { namespace gig { Line 412  namespace LinuxSampler { namespace gig {
412                  switch (itEvent->Type) {                  switch (itEvent->Type) {
413                      case Event::type_note_on:                      case Event::type_note_on:
414                          dmsg(5,("Engine: Note on received\n"));                          dmsg(5,("Engine: Note on received\n"));
415                          ProcessNoteOn(itEvent);                          ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent);
416                          break;                          break;
417                      case Event::type_note_off:                      case Event::type_note_off:
418                          dmsg(5,("Engine: Note off received\n"));                          dmsg(5,("Engine: Note off received\n"));
419                          ProcessNoteOff(itEvent);                          ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent);
420                          break;                          break;
421                      case Event::type_control_change:                      case Event::type_control_change:
422                          dmsg(5,("Engine: MIDI CC received\n"));                          dmsg(5,("Engine: MIDI CC received\n"));
423                          ProcessControlChange(itEvent);                          ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent);
424                          break;                          break;
425                      case Event::type_pitchbend:                      case Event::type_pitchbend:
426                          dmsg(5,("Engine: Pitchbend received\n"));                          dmsg(5,("Engine: Pitchbend received\n"));
427                          ProcessPitchbend(itEvent);                          ProcessPitchbend((EngineChannel*)itEvent->pEngineChannel, itEvent);
                         break;  
                     case Event::type_sysex:  
                         dmsg(5,("Engine: Sysex received\n"));  
                         ProcessSysex(itEvent);  
428                          break;                          break;
429                  }                  }
430              }              }
431          }          }
432    
433    
         int active_voices = 0;  
   
434          // render audio from all active voices          // render audio from all active voices
435          {          {
436              RTList<uint>::Iterator iuiKey = pActiveKeys->first();              RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
437              RTList<uint>::Iterator end    = pActiveKeys->end();              RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();
438              while (iuiKey != end) { // iterate through all active keys              while (iuiKey != end) { // iterate through all active keys
439                  midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];                  midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
440                  ++iuiKey;                  ++iuiKey;
441    
442                  RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();                  RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
# Line 464  namespace LinuxSampler { namespace gig { Line 444  namespace LinuxSampler { namespace gig {
444                  for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key                  for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
445                      // now render current voice                      // now render current voice
446                      itVoice->Render(Samples);                      itVoice->Render(Samples);
447                      if (itVoice->IsActive()) active_voices++; // still active                      if (itVoice->IsActive()) ActiveVoiceCountTemp++; // still active
448                      else { // voice reached end, is now inactive                      else { // voice reached end, is now inactive
449                          KillVoiceImmediately(itVoice); // remove voice from the list of active voices                          FreeVoice(pEngineChannel, itVoice); // remove voice from the list of active voices
450                      }                      }
451                  }                  }
452              }              }
453          }          }
454    
455            
456          // now render all postponed voices from voice stealing          // now render all postponed voices from voice stealing
457          {          {
458              RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first();              RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first();
459              RTList<Event>::Iterator end               = pVoiceStealingQueue->end();              RTList<Event>::Iterator end               = pVoiceStealingQueue->end();
460              for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {              for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {
461                  Pool<Voice>::Iterator itNewVoice = LaunchVoice(itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false);                  Pool<Voice>::Iterator itNewVoice =
462                        LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false);
463                  if (itNewVoice) {                  if (itNewVoice) {
464                      itNewVoice->Render(Samples);                      for (; itNewVoice; itNewVoice = itNewVoice->itChildVoice) {
465                      if (itNewVoice->IsActive()) active_voices++; // still active                          itNewVoice->Render(Samples);
466                      else { // voice reached end, is now inactive                          if (itNewVoice->IsActive()) ActiveVoiceCountTemp++; // still active
467                          KillVoiceImmediately(itNewVoice); // remove voice from the list of active voices                          else { // voice reached end, is now inactive
468                                FreeVoice(pEngineChannel, itNewVoice); // remove voice from the list of active voices
469                            }
470                      }                      }
471                  }                  }
472                  else dmsg(1,("Ouch, voice stealing didn't work out!\n"));                  else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n"));
473              }              }
474          }          }
475          // reset voice stealing for the new fragment          // reset voice stealing for the new fragment
476          pVoiceStealingQueue->clear();          pVoiceStealingQueue->clear();
477          itLastStolenVoice = RTList<Voice>::Iterator();          pEngineChannel->itLastStolenVoice = RTList<Voice>::Iterator();
478          iuiLastStolenKey  = RTList<uint>::Iterator();          pEngineChannel->iuiLastStolenKey  = RTList<uint>::Iterator();
479            
   
         // write that to the disk thread class so that it can print it  
         // on the console for debugging purposes  
         ActiveVoiceCount = active_voices;  
         if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount;  
   
   
         return 0;  
     }  
   
     /**  
      *  Will be called by the MIDIIn Thread to let the audio thread trigger a new  
      *  voice for the given key.  
      *  
      *  @param Key      - MIDI key number of the triggered key  
      *  @param Velocity - MIDI velocity value of the triggered key  
      */  
     void Engine::SendNoteOn(uint8_t Key, uint8_t Velocity) {  
         Event event               = pEventGenerator->CreateEvent();  
         event.Type                = Event::type_note_on;  
         event.Param.Note.Key      = Key;  
         event.Param.Note.Velocity = Velocity;  
         if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);  
         else dmsg(1,("Engine: Input event queue full!"));  
     }  
480    
481      /**          // free all keys which have no active voices left
482       *  Will be called by the MIDIIn Thread to signal the audio thread to release          {
483       *  voice(s) on the given key.              RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
484       *              RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();
485       *  @param Key      - MIDI key number of the released key              while (iuiKey != end) { // iterate through all active keys
486       *  @param Velocity - MIDI release velocity value of the released key                  midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
487       */                  ++iuiKey;
488      void Engine::SendNoteOff(uint8_t Key, uint8_t Velocity) {                  if (pKey->pActiveVoices->isEmpty()) FreeKey(pEngineChannel, pKey);
489          Event event               = pEventGenerator->CreateEvent();                  #if DEVMODE
490          event.Type                = Event::type_note_off;                  else { // FIXME: should be removed before the final release (purpose: just a sanity check for debugging)
491          event.Param.Note.Key      = Key;                      RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
492          event.Param.Note.Velocity = Velocity;                      RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
493          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);                      for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
494          else dmsg(1,("Engine: Input event queue full!"));                          if (itVoice->itKillEvent) {
495      }                              dmsg(1,("gig::Engine: ERROR, killed voice survived !!!\n"));
496                            }
497      /**                      }
498       *  Will be called by the MIDIIn Thread to signal the audio thread to change                  }
499       *  the pitch value for all voices.                  #endif // DEVMODE
500       *              }
501       *  @param Pitch - MIDI pitch value (-8192 ... +8191)          }
      */  
     void Engine::SendPitchbend(int Pitch) {  
         Event event             = pEventGenerator->CreateEvent();  
         event.Type              = Event::type_pitchbend;  
         event.Param.Pitch.Pitch = Pitch;  
         if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);  
         else dmsg(1,("Engine: Input event queue full!"));  
     }  
   
     /**  
      *  Will be called by the MIDIIn Thread to signal the audio thread that a  
      *  continuous controller value has changed.  
      *  
      *  @param Controller - MIDI controller number of the occured control change  
      *  @param Value      - value of the control change  
      */  
     void Engine::SendControlChange(uint8_t Controller, uint8_t Value) {  
         Event event               = pEventGenerator->CreateEvent();  
         event.Type                = Event::type_control_change;  
         event.Param.CC.Controller = Controller;  
         event.Param.CC.Value      = Value;  
         if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);  
         else dmsg(1,("Engine: Input event queue full!"));  
502      }      }
503    
504      /**      /**
# Line 577  namespace LinuxSampler { namespace gig { Line 512  namespace LinuxSampler { namespace gig {
512          Event event             = pEventGenerator->CreateEvent();          Event event             = pEventGenerator->CreateEvent();
513          event.Type              = Event::type_sysex;          event.Type              = Event::type_sysex;
514          event.Param.Sysex.Size  = Size;          event.Param.Sysex.Size  = Size;
515            event.pEngineChannel    = NULL; // as Engine global event
516          if (pEventQueue->write_space() > 0) {          if (pEventQueue->write_space() > 0) {
517              if (pSysexBuffer->write_space() >= Size) {              if (pSysexBuffer->write_space() >= Size) {
518                  // copy sysex data to input buffer                  // copy sysex data to input buffer
# Line 600  namespace LinuxSampler { namespace gig { Line 536  namespace LinuxSampler { namespace gig {
536      /**      /**
537       *  Assigns and triggers a new voice for the respective MIDI key.       *  Assigns and triggers a new voice for the respective MIDI key.
538       *       *
539         *  @param pEngineChannel - engine channel on which this event occured on
540       *  @param itNoteOnEvent - key, velocity and time stamp of the event       *  @param itNoteOnEvent - key, velocity and time stamp of the event
541       */       */
542      void Engine::ProcessNoteOn(Pool<Event>::Iterator& itNoteOnEvent) {      void Engine::ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
543          midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];          
544            const int key = itNoteOnEvent->Param.Note.Key;
545    
546            // Change key dimension value if key is in keyswitching area
547            {
548                const ::gig::Instrument* pInstrument = pEngineChannel->pInstrument;
549                if (key >= pInstrument->DimensionKeyRange.low && key <= pInstrument->DimensionKeyRange.high)
550                    pEngineChannel->CurrentKeyDimension = ((key - pInstrument->DimensionKeyRange.low) * 128) /
551                        (pInstrument->DimensionKeyRange.high - pInstrument->DimensionKeyRange.low + 1);
552            }
553    
554            midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[key];
555    
556          pKey->KeyPressed = true; // the MIDI key was now pressed down          pKey->KeyPressed = true; // the MIDI key was now pressed down
557    
558          // cancel release process of voices on this key if needed          // cancel release process of voices on this key if needed
559          if (pKey->Active && !SustainPedal) {          if (pKey->Active && !pEngineChannel->SustainPedal) {
560              RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend();              RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend();
561              if (itCancelReleaseEvent) {              if (itCancelReleaseEvent) {
562                  *itCancelReleaseEvent = *itNoteOnEvent;                  // copy event                  *itCancelReleaseEvent = *itNoteOnEvent;                  // copy event
# Line 621  namespace LinuxSampler { namespace gig { Line 569  namespace LinuxSampler { namespace gig {
569          RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);          RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);
570    
571          // allocate and trigger a new voice for the key          // allocate and trigger a new voice for the key
572          LaunchVoice(itNoteOnEventOnKeyList);          LaunchVoice(pEngineChannel, itNoteOnEventOnKeyList, 0, false, true);
573      }      }
574    
575      /**      /**
# Line 630  namespace LinuxSampler { namespace gig { Line 578  namespace LinuxSampler { namespace gig {
578       *  sustain pedal will be released or voice turned inactive by itself (e.g.       *  sustain pedal will be released or voice turned inactive by itself (e.g.
579       *  due to completion of sample playback).       *  due to completion of sample playback).
580       *       *
581         *  @param pEngineChannel - engine channel on which this event occured on
582       *  @param itNoteOffEvent - key, velocity and time stamp of the event       *  @param itNoteOffEvent - key, velocity and time stamp of the event
583       */       */
584      void Engine::ProcessNoteOff(Pool<Event>::Iterator& itNoteOffEvent) {      void Engine::ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) {
585          midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key];          midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key];
586    
587          pKey->KeyPressed = false; // the MIDI key was now released          pKey->KeyPressed = false; // the MIDI key was now released
588    
589          // release voices on this key if needed          // release voices on this key if needed
590          if (pKey->Active && !SustainPedal) {          if (pKey->Active && !pEngineChannel->SustainPedal) {
591              itNoteOffEvent->Type = Event::type_release; // transform event type              itNoteOffEvent->Type = Event::type_release; // transform event type
592          }          }
593    
# Line 647  namespace LinuxSampler { namespace gig { Line 596  namespace LinuxSampler { namespace gig {
596    
597          // spawn release triggered voice(s) if needed          // spawn release triggered voice(s) if needed
598          if (pKey->ReleaseTrigger) {          if (pKey->ReleaseTrigger) {
599              LaunchVoice(itNoteOffEventOnKeyList, 0, true);              LaunchVoice(pEngineChannel, itNoteOffEventOnKeyList, 0, true, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples
600              pKey->ReleaseTrigger = false;              pKey->ReleaseTrigger = false;
601          }          }
602      }      }
# Line 656  namespace LinuxSampler { namespace gig { Line 605  namespace LinuxSampler { namespace gig {
605       *  Moves pitchbend event from the general (input) event list to the pitch       *  Moves pitchbend event from the general (input) event list to the pitch
606       *  event list.       *  event list.
607       *       *
608         *  @param pEngineChannel - engine channel on which this event occured on
609       *  @param itPitchbendEvent - absolute pitch value and time stamp of the event       *  @param itPitchbendEvent - absolute pitch value and time stamp of the event
610       */       */
611      void Engine::ProcessPitchbend(Pool<Event>::Iterator& itPitchbendEvent) {      void Engine::ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent) {
612          this->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value          pEngineChannel->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value
613          itPitchbendEvent.moveToEndOf(pSynthesisEvents[Event::destination_vco]);          itPitchbendEvent.moveToEndOf(pSynthesisEvents[Event::destination_vco]);
614      }      }
615    
# Line 668  namespace LinuxSampler { namespace gig { Line 618  namespace LinuxSampler { namespace gig {
618       *  called by the ProcessNoteOn() method and by the voices itself       *  called by the ProcessNoteOn() method and by the voices itself
619       *  (e.g. to spawn further voices on the same key for layered sounds).       *  (e.g. to spawn further voices on the same key for layered sounds).
620       *       *
621         *  @param pEngineChannel      - engine channel on which this event occured on
622       *  @param itNoteOnEvent       - key, velocity and time stamp of the event       *  @param itNoteOnEvent       - key, velocity and time stamp of the event
623       *  @param iLayer              - layer index for the new voice (optional - only       *  @param iLayer              - layer index for the new voice (optional - only
624       *                               in case of layered sounds of course)       *                               in case of layered sounds of course)
# Line 677  namespace LinuxSampler { namespace gig { Line 628  namespace LinuxSampler { namespace gig {
628       *                               when there is no free voice       *                               when there is no free voice
629       *                               (optional, default = true)       *                               (optional, default = true)
630       *  @returns pointer to new voice or NULL if there was no free voice or       *  @returns pointer to new voice or NULL if there was no free voice or
631       *           if an error occured while trying to trigger the new voice       *           if the voice wasn't triggered (for example when no region is
632         *           defined for the given key).
633       */       */
634      Pool<Voice>::Iterator Engine::LaunchVoice(Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing) {      Pool<Voice>::Iterator Engine::LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing) {
635          midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];          midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
636    
637          // allocate a new voice for the key          // allocate a new voice for the key
638          Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend();          Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend();
639          if (itNewVoice) {          if (itNewVoice) {
640              // launch the new voice              // launch the new voice
641              if (itNewVoice->Trigger(itNoteOnEvent, this->Pitch, this->pInstrument, iLayer, ReleaseTriggerVoice) < 0) {              if (itNewVoice->Trigger(pEngineChannel, itNoteOnEvent, pEngineChannel->Pitch, pEngineChannel->pInstrument, iLayer, ReleaseTriggerVoice, VoiceStealing) < 0) {
642                  dmsg(1,("Triggering new voice failed!\n"));                  dmsg(4,("Voice not triggered\n"));
643                  pKey->pActiveVoices->free(itNewVoice);                  pKey->pActiveVoices->free(itNewVoice);
644              }              }
645              else { // on success              else { // on success
646                  uint** ppKeyGroup = NULL;                  uint** ppKeyGroup = NULL;
647                  if (itNewVoice->KeyGroup) { // if this voice / key belongs to a key group                  if (itNewVoice->KeyGroup) { // if this voice / key belongs to a key group
648                      ppKeyGroup = &ActiveKeyGroups[itNewVoice->KeyGroup];                      ppKeyGroup = &pEngineChannel->ActiveKeyGroups[itNewVoice->KeyGroup];
649                      if (*ppKeyGroup) { // if there's already an active key in that key group                      if (*ppKeyGroup) { // if there's already an active key in that key group
650                          midi_key_info_t* pOtherKey = &pMIDIKeyInfo[**ppKeyGroup];                          midi_key_info_t* pOtherKey = &pEngineChannel->pMIDIKeyInfo[**ppKeyGroup];
651                          // kill all voices on the (other) key                          // kill all voices on the (other) key
652                          RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first();                          RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first();
653                          RTList<Voice>::Iterator end               = pOtherKey->pActiveVoices->end();                          RTList<Voice>::Iterator end               = pOtherKey->pActiveVoices->end();
# Line 706  namespace LinuxSampler { namespace gig { Line 658  namespace LinuxSampler { namespace gig {
658                  }                  }
659                  if (!pKey->Active) { // mark as active key                  if (!pKey->Active) { // mark as active key
660                      pKey->Active = true;                      pKey->Active = true;
661                      pKey->itSelf = pActiveKeys->allocAppend();                      pKey->itSelf = pEngineChannel->pActiveKeys->allocAppend();
662                      *pKey->itSelf = itNoteOnEvent->Param.Note.Key;                      *pKey->itSelf = itNoteOnEvent->Param.Note.Key;
663                  }                  }
664                  if (itNewVoice->KeyGroup) {                  if (itNewVoice->KeyGroup) {
# Line 716  namespace LinuxSampler { namespace gig { Line 668  namespace LinuxSampler { namespace gig {
668                  return itNewVoice; // success                  return itNewVoice; // success
669              }              }
670          }          }
671          else if (VoiceStealing) StealVoice(itNoteOnEvent, iLayer, ReleaseTriggerVoice); // no free voice left, so steal one          else if (VoiceStealing) {
672                // first, get total amount of required voices (dependant on amount of layers)
673                ::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOnEvent->Param.Note.Key);
674                if (!pRegion) return Pool<Voice>::Iterator(); // nothing defined for this MIDI key, so no voice needed
675                int voicesRequired = pRegion->Layers;
676    
677                // now steal the (remaining) amount of voices
678                for (int i = iLayer; i < voicesRequired; i++)
679                    StealVoice(pEngineChannel, itNoteOnEvent);
680    
681                // put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died
682                RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend();
683                if (itStealEvent) {
684                    *itStealEvent = *itNoteOnEvent; // copy event
685                    itStealEvent->Param.Note.Layer = iLayer;
686                    itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice;
687                }
688                else dmsg(1,("Voice stealing queue full!\n"));
689            }
690    
691          return Pool<Voice>::Iterator(); // no free voice or error          return Pool<Voice>::Iterator(); // no free voice or error
692      }      }
# Line 727  namespace LinuxSampler { namespace gig { Line 697  namespace LinuxSampler { namespace gig {
697       *  voice stealing and postpone the note-on event until the selected       *  voice stealing and postpone the note-on event until the selected
698       *  voice actually died.       *  voice actually died.
699       *       *
700       *  @param itNoteOnEvent       - key, velocity and time stamp of the event       *  @param pEngineChannel - engine channel on which this event occured on
701       *  @param iLayer              - layer index for the new voice       *  @param itNoteOnEvent - key, velocity and time stamp of the event
      *  @param ReleaseTriggerVoice - if new voice is a release triggered voice  
702       */       */
703      void Engine::StealVoice(Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice) {      void Engine::StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
704          if (!pEventPool->poolIsEmpty()) {          if (!pEventPool->poolIsEmpty()) {
705    
706              RTList<uint>::Iterator  iuiOldestKey;              RTList<uint>::Iterator  iuiOldestKey;
# Line 745  namespace LinuxSampler { namespace gig { Line 714  namespace LinuxSampler { namespace gig {
714                  // key, or no voice left to kill there, then procceed with                  // key, or no voice left to kill there, then procceed with
715                  // 'oldestkey' algorithm                  // 'oldestkey' algorithm
716                  case voice_steal_algo_keymask: {                  case voice_steal_algo_keymask: {
717                      midi_key_info_t* pOldestKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];                      midi_key_info_t* pOldestKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
718                      if (itLastStolenVoice) {                      if (pEngineChannel->itLastStolenVoice) {
719                          itOldestVoice = itLastStolenVoice;                          itOldestVoice = pEngineChannel->itLastStolenVoice;
720                          ++itOldestVoice;                          ++itOldestVoice;
721                      }                      }
722                      else { // no voice stolen in this audio fragment cycle yet                      else { // no voice stolen in this audio fragment cycle yet
# Line 762  namespace LinuxSampler { namespace gig { Line 731  namespace LinuxSampler { namespace gig {
731                  // try to pick the oldest voice on the oldest active key                  // try to pick the oldest voice on the oldest active key
732                  // (caution: must stay after 'keymask' algorithm !)                  // (caution: must stay after 'keymask' algorithm !)
733                  case voice_steal_algo_oldestkey: {                  case voice_steal_algo_oldestkey: {
734                      if (itLastStolenVoice) {                      if (pEngineChannel->itLastStolenVoice) {
735                          midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiLastStolenKey];                          midi_key_info_t* pOldestKey = &pEngineChannel->pMIDIKeyInfo[*pEngineChannel->iuiLastStolenKey];
736                          itOldestVoice = itLastStolenVoice;                          itOldestVoice = pEngineChannel->itLastStolenVoice;
737                          ++itOldestVoice;                          ++itOldestVoice;
738                          if (!itOldestVoice) {                          if (!itOldestVoice) {
739                              iuiOldestKey = iuiLastStolenKey;                              iuiOldestKey = pEngineChannel->iuiLastStolenKey;
740                              ++iuiOldestKey;                              ++iuiOldestKey;
741                              if (iuiOldestKey) {                              if (iuiOldestKey) {
742                                  midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiOldestKey];                                  midi_key_info_t* pOldestKey = &pEngineChannel->pMIDIKeyInfo[*iuiOldestKey];
743                                  itOldestVoice = pOldestKey->pActiveVoices->first();                                  itOldestVoice = pOldestKey->pActiveVoices->first();
744                              }                              }
745                              else { // too less voices, even for voice stealing                              else {
746                                  dmsg(1,("Voice overflow! - You might recompile with higher MAX_AUDIO_VOICES!\n"));                                  dmsg(1,("gig::Engine: Warning, too less voices, even for voice stealing! - Better recompile with higher MAX_AUDIO_VOICES.\n"));
747                                  return;                                  return;
748                              }                              }
749                          }                          }
750                          else iuiOldestKey = iuiLastStolenKey;                          else iuiOldestKey = pEngineChannel->iuiLastStolenKey;
751                      }                      }
752                      else { // no voice stolen in this audio fragment cycle yet                      else { // no voice stolen in this audio fragment cycle yet
753                          iuiOldestKey = pActiveKeys->first();                          iuiOldestKey = pEngineChannel->pActiveKeys->first();
754                          midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiOldestKey];                          midi_key_info_t* pOldestKey = &pEngineChannel->pMIDIKeyInfo[*iuiOldestKey];
755                          itOldestVoice = pOldestKey->pActiveVoices->first();                          itOldestVoice = pOldestKey->pActiveVoices->first();
756                      }                      }
757                      break;                      break;
# Line 796  namespace LinuxSampler { namespace gig { Line 765  namespace LinuxSampler { namespace gig {
765                  }                  }
766              }              }
767    
768                //FIXME: can be removed, just a sanity check for debugging
769                if (!itOldestVoice->IsActive()) dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n"));
770    
771              // now kill the selected voice              // now kill the selected voice
772              itOldestVoice->Kill(itNoteOnEvent);              itOldestVoice->Kill(itNoteOnEvent);
773              // remember which voice on which key we stole, so we can simply proceed for the next voice stealing              // remember which voice on which key we stole, so we can simply proceed for the next voice stealing
774              this->itLastStolenVoice = itOldestVoice;              pEngineChannel->itLastStolenVoice = itOldestVoice;
775              this->iuiLastStolenKey = iuiOldestKey;              pEngineChannel->iuiLastStolenKey = iuiOldestKey;
             // 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;  
             }  
             else dmsg(1,("Voice stealing queue full!\n"));  
776          }          }
777          else dmsg(1,("Event pool emtpy!\n"));          else dmsg(1,("Event pool emtpy!\n"));
778      }      }
779    
780      /**      /**
781       *  Immediately kills the voice given with pVoice (no matter if sustain is       *  Removes the given voice from the MIDI key's list of active voices.
782       *  pressed or not) and removes it from the MIDI key's list of active voice.       *  This method will be called when a voice went inactive, e.g. because
783       *  This method will e.g. be called if a voice went inactive by itself.       *  it finished to playback its sample, finished its release stage or
784         *  just was killed.
785       *       *
786       *  @param itVoice - points to the voice to be killed       *  @param pEngineChannel - engine channel on which this event occured on
787         *  @param itVoice - points to the voice to be freed
788       */       */
789      void Engine::KillVoiceImmediately(Pool<Voice>::Iterator& itVoice) {      void Engine::FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice) {
790          if (itVoice) {          if (itVoice) {
791              if (itVoice->IsActive()) itVoice->KillImmediately();              midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoice->MIDIKey];
   
             midi_key_info_t* pKey = &pMIDIKeyInfo[itVoice->MIDIKey];  
792    
793              uint keygroup = itVoice->KeyGroup;              uint keygroup = itVoice->KeyGroup;
794    
795              // free the voice object              // free the voice object
796              pVoicePool->free(itVoice);              pVoicePool->free(itVoice);
797    
798              // check if there are no voices left on the MIDI key and update the key info if so              // if no other voices left and member of a key group, remove from key group
799              if (pKey->pActiveVoices->isEmpty()) {              if (pKey->pActiveVoices->isEmpty() && keygroup) {
800                  if (keygroup) { // if voice / key belongs to a key group                  uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[keygroup];
801                      uint** ppKeyGroup = &ActiveKeyGroups[keygroup];                  if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group
                     if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group  
                 }  
                 pKey->Active = false;  
                 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"));  
802              }              }
803          }          }
804          else std::cerr << "Couldn't release voice! (pVoice == NULL)\n" << std::flush;          else std::cerr << "Couldn't release voice! (!itVoice)\n" << std::flush;
805        }
806    
807        /**
808         *  Called when there's no more voice left on a key, this call will
809         *  update the key info respectively.
810         *
811         *  @param pEngineChannel - engine channel on which this event occured on
812         *  @param pKey - key which is now inactive
813         */
814        void Engine::FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey) {
815            if (pKey->pActiveVoices->isEmpty()) {
816                pKey->Active = false;
817                pEngineChannel->pActiveKeys->free(pKey->itSelf); // remove key from list of active keys
818                pKey->itSelf = RTList<uint>::Iterator();
819                pKey->ReleaseTrigger = false;
820                pKey->pEvents->clear();
821                dmsg(3,("Key has no more voices now\n"));
822            }
823            else dmsg(1,("gig::Engine: Oops, tried to free a key which contains voices.\n"));
824      }      }
825    
826      /**      /**
827       *  Reacts on supported control change commands (e.g. pitch bend wheel,       *  Reacts on supported control change commands (e.g. pitch bend wheel,
828       *  modulation wheel, aftertouch).       *  modulation wheel, aftertouch).
829       *       *
830         *  @param pEngineChannel - engine channel on which this event occured on
831       *  @param itControlChangeEvent - controller, value and time stamp of the event       *  @param itControlChangeEvent - controller, value and time stamp of the event
832       */       */
833      void Engine::ProcessControlChange(Pool<Event>::Iterator& itControlChangeEvent) {      void Engine::ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent) {
834          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));
835    
836          switch (itControlChangeEvent->Param.CC.Controller) {          switch (itControlChangeEvent->Param.CC.Controller) {
837              case 64: {              case 7: { // volume
838                  if (itControlChangeEvent->Param.CC.Value >= 64 && !SustainPedal) {                  //TODO: not sample accurate yet
839                    pEngineChannel->GlobalVolume = (float) itControlChangeEvent->Param.CC.Value / 127.0f;
840                    break;
841                }
842                case 10: { // panpot
843                    //TODO: not sample accurate yet
844                    const int pan = (int) itControlChangeEvent->Param.CC.Value - 64;
845                    pEngineChannel->GlobalPanLeft  = 1.0f - float(RTMath::Max(pan, 0)) /  63.0f;
846                    pEngineChannel->GlobalPanRight = 1.0f - float(RTMath::Min(pan, 0)) / -64.0f;
847                    break;
848                }
849                case 64: { // sustain
850                    if (itControlChangeEvent->Param.CC.Value >= 64 && !pEngineChannel->SustainPedal) {
851                      dmsg(4,("PEDAL DOWN\n"));                      dmsg(4,("PEDAL DOWN\n"));
852                      SustainPedal = true;                      pEngineChannel->SustainPedal = true;
853    
854                      // cancel release process of voices if necessary                      // cancel release process of voices if necessary
855                      RTList<uint>::Iterator iuiKey = pActiveKeys->first();                      RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
856                      if (iuiKey) {                      if (iuiKey) {
857                          itControlChangeEvent->Type = Event::type_cancel_release; // transform event type                          itControlChangeEvent->Type = Event::type_cancel_release; // transform event type
858                          while (iuiKey) {                          while (iuiKey) {
859                              midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];                              midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
860                              ++iuiKey;                              ++iuiKey;
861                              if (!pKey->KeyPressed) {                              if (!pKey->KeyPressed) {
862                                  RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();                                  RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();
# Line 878  namespace LinuxSampler { namespace gig { Line 866  namespace LinuxSampler { namespace gig {
866                          }                          }
867                      }                      }
868                  }                  }
869                  if (itControlChangeEvent->Param.CC.Value < 64 && SustainPedal) {                  if (itControlChangeEvent->Param.CC.Value < 64 && pEngineChannel->SustainPedal) {
870                      dmsg(4,("PEDAL UP\n"));                      dmsg(4,("PEDAL UP\n"));
871                      SustainPedal = false;                      pEngineChannel->SustainPedal = false;
872    
873                      // release voices if their respective key is not pressed                      // release voices if their respective key is not pressed
874                      RTList<uint>::Iterator iuiKey = pActiveKeys->first();                      RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
875                      if (iuiKey) {                      if (iuiKey) {
876                          itControlChangeEvent->Type = Event::type_release; // transform event type                          itControlChangeEvent->Type = Event::type_release; // transform event type
877                          while (iuiKey) {                          while (iuiKey) {
878                              midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];                              midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
879                              ++iuiKey;                              ++iuiKey;
880                              if (!pKey->KeyPressed) {                              if (!pKey->KeyPressed) {
881                                  RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();                                  RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();
# Line 902  namespace LinuxSampler { namespace gig { Line 890  namespace LinuxSampler { namespace gig {
890          }          }
891    
892          // update controller value in the engine's controller table          // update controller value in the engine's controller table
893          ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;          pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;
894    
895          // move event from the unsorted event list to the control change event list          // move event from the unsorted event list to the control change event list
896          itControlChangeEvent.moveToEndOf(pCCEvents);          itControlChangeEvent.moveToEndOf(pCCEvents);
# Line 1004  namespace LinuxSampler { namespace gig { Line 992  namespace LinuxSampler { namespace gig {
992             m[i+2] = val;             m[i+2] = val;
993             m[i+3] = val;             m[i+3] = val;
994          }          }
995      }      }    
   
     float Engine::Volume() {  
         return GlobalVolume;  
     }  
   
     void Engine::Volume(float f) {  
         GlobalVolume = f;  
     }  
   
     uint Engine::Channels() {  
         return 2;  
     }  
   
     void Engine::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {  
         AudioChannel* pChannel = pAudioOutputDevice->Channel(AudioDeviceChannel);  
         if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));  
         switch (EngineAudioChannel) {  
             case 0: // left output channel  
                 pOutputLeft = pChannel->Buffer();  
                 AudioDeviceChannelLeft = AudioDeviceChannel;  
                 break;  
             case 1: // right output channel  
                 pOutputRight = pChannel->Buffer();  
                 AudioDeviceChannelRight = AudioDeviceChannel;  
                 break;  
             default:  
                 throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));  
         }  
     }  
   
     int Engine::OutputChannel(uint EngineAudioChannel) {  
         switch (EngineAudioChannel) {  
             case 0: // left channel  
                 return AudioDeviceChannelLeft;  
             case 1: // right channel  
                 return AudioDeviceChannelRight;  
             default:  
                 throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));  
         }  
     }  
996    
997      uint Engine::VoiceCount() {      uint Engine::VoiceCount() {
998          return ActiveVoiceCount;          return ActiveVoiceCount;
# Line 1078  namespace LinuxSampler { namespace gig { Line 1026  namespace LinuxSampler { namespace gig {
1026          return "GigEngine";          return "GigEngine";
1027      }      }
1028    
     String Engine::InstrumentFileName() {  
         return InstrumentFile;  
     }  
   
     int Engine::InstrumentIndex() {  
         return InstrumentIdx;  
     }  
   
     int Engine::InstrumentStatus() {  
         return InstrumentStat;  
     }  
   
1029      String Engine::Description() {      String Engine::Description() {
1030          return "Gigasampler Engine";          return "Gigasampler Engine";
1031      }      }
1032    
1033      String Engine::Version() {      String Engine::Version() {
1034          String s = "$Revision: 1.15 $";          String s = "$Revision: 1.29 $";
1035          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
1036      }      }
1037    
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