/[svn]/linuxsampler/trunk/src/engines/gig/Engine.cpp
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revision 242 by schoenebeck, Wed Sep 15 13:59:08 2004 UTC revision 411 by schoenebeck, Sat Feb 26 02:01:14 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    
29  #include "Engine.h"  #include "Engine.h"
30    
31    #if defined(__APPLE__)
32    # include <stdlib.h>
33    #else
34    # include <malloc.h>
35    #endif
36    
37  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
38    
39      InstrumentResourceManager Engine::Instruments;      InstrumentResourceManager Engine::instruments;
40    
41        std::map<AudioOutputDevice*,Engine*> Engine::engines;
42    
43        Engine* Engine::AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) {
44            Engine* pEngine;
45            if (engines.count(pDevice)) {
46                pEngine = engines[pDevice];
47            } else {
48                pEngine = new Engine;
49                pEngine->Connect(pDevice);
50            }
51            pEngine->samplerChannels.push_back(pChannel);
52            return pEngine;
53        }
54    
55        void Engine::FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) {
56            Engine* pEngine = engines[pDevice];
57            pEngine->samplerChannels.remove(pChannel);
58            if (pEngine->samplerChannels.empty()) delete pEngine;
59        }
60    
61      Engine::Engine() {      Engine::Engine() {
         pRIFF              = NULL;  
         pGig               = NULL;  
         pInstrument        = NULL;  
62          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
63          pDiskThread        = NULL;          pDiskThread        = NULL;
64          pEventGenerator    = NULL;          pEventGenerator    = NULL;
65          pEventQueue        = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT);          pSysexBuffer       = new RingBuffer<uint8_t>(SYSEX_BUFFER_SIZE, 0);
66          pEventPool         = new RTELMemoryPool<Event>(MAX_EVENTS_PER_FRAGMENT);          pEventQueue        = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0);
67          pVoicePool         = new RTELMemoryPool<Voice>(MAX_AUDIO_VOICES);          pEventPool         = new Pool<Event>(MAX_EVENTS_PER_FRAGMENT);
68          pActiveKeys        = new RTELMemoryPool<uint>(128);          pVoicePool         = new Pool<Voice>(MAX_AUDIO_VOICES);        
69          pEvents            = new RTEList<Event>(pEventPool);          pVoiceStealingQueue = new RTList<Event>(pEventPool);
70          pCCEvents          = new RTEList<Event>(pEventPool);          pEvents            = new RTList<Event>(pEventPool);
71            pCCEvents          = new RTList<Event>(pEventPool);
72            
73          for (uint i = 0; i < Event::destination_count; i++) {          for (uint i = 0; i < Event::destination_count; i++) {
74              pSynthesisEvents[i] = new RTEList<Event>(pEventPool);              pSynthesisEvents[i] = new RTList<Event>(pEventPool);
75          }          }
76          for (uint i = 0; i < 128; i++) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
77              pMIDIKeyInfo[i].pActiveVoices  = new RTEList<Voice>(pVoicePool);              iterVoice->SetEngine(this);
             pMIDIKeyInfo[i].KeyPressed     = false;  
             pMIDIKeyInfo[i].Active         = false;  
             pMIDIKeyInfo[i].ReleaseTrigger = false;  
             pMIDIKeyInfo[i].pSelf          = NULL;  
             pMIDIKeyInfo[i].pEvents        = new RTEList<Event>(pEventPool);  
         }  
         for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) {  
             pVoice->SetEngine(this);  
78          }          }
79          pVoicePool->clear();          pVoicePool->clear();
80    
# Line 63  namespace LinuxSampler { namespace gig { Line 82  namespace LinuxSampler { namespace gig {
82          pBasicFilterParameters  = NULL;          pBasicFilterParameters  = NULL;
83          pMainFilterParameters   = NULL;          pMainFilterParameters   = NULL;
84    
         InstrumentIdx = -1;  
         InstrumentStat = -1;  
   
         AudioDeviceChannelLeft  = -1;  
         AudioDeviceChannelRight = -1;  
   
85          ResetInternal();          ResetInternal();
86      }      }
87    
88      Engine::~Engine() {      Engine::~Engine() {
89          if (pDiskThread) {          if (pDiskThread) {
90                dmsg(1,("Stopping disk thread..."));
91              pDiskThread->StopThread();              pDiskThread->StopThread();
92              delete pDiskThread;              delete pDiskThread;
93          }              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;  
94          }          }
95          for (uint i = 0; i < Event::destination_count; i++) {          for (uint i = 0; i < Event::destination_count; i++) {
96              if (pSynthesisEvents[i]) delete pSynthesisEvents[i];              if (pSynthesisEvents[i]) delete pSynthesisEvents[i];
97          }          }
         delete[] pSynthesisEvents;  
98          if (pEvents)     delete pEvents;          if (pEvents)     delete pEvents;
99          if (pCCEvents)   delete pCCEvents;          if (pCCEvents)   delete pCCEvents;
100          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
101          if (pEventPool)  delete pEventPool;          if (pEventPool)  delete pEventPool;
102          if (pVoicePool)  delete pVoicePool;          if (pVoicePool) {
103          if (pActiveKeys) delete pActiveKeys;              pVoicePool->clear();
104                delete pVoicePool;
105            }
106          if (pEventGenerator) delete pEventGenerator;          if (pEventGenerator) delete pEventGenerator;
107          if (pMainFilterParameters) delete[] pMainFilterParameters;          if (pMainFilterParameters) delete[] pMainFilterParameters;
108          if (pBasicFilterParameters) delete[] pBasicFilterParameters;          if (pBasicFilterParameters) delete[] pBasicFilterParameters;
109          if (pSynthesisParameters[0]) delete[] pSynthesisParameters[0];          if (pSynthesisParameters[0]) free(pSynthesisParameters[0]);
110            if (pVoiceStealingQueue) delete pVoiceStealingQueue;
111            if (pSysexBuffer) delete pSysexBuffer;
112      }      }
113    
114      void Engine::Enable() {      void Engine::Enable() {
# Line 123  namespace LinuxSampler { namespace gig { Line 135  namespace LinuxSampler { namespace gig {
135       */       */
136      void Engine::Reset() {      void Engine::Reset() {
137          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();  
   
138          ResetInternal();          ResetInternal();
   
         // signal audio thread to continue with rendering  
         //SuspensionRequested = false;  
139          Enable();          Enable();
140      }      }
141    
# Line 149  namespace LinuxSampler { namespace gig { Line 144  namespace LinuxSampler { namespace gig {
144       *  control and status variables. This method is not thread safe!       *  control and status variables. This method is not thread safe!
145       */       */
146      void Engine::ResetInternal() {      void Engine::ResetInternal() {
         Pitch               = 0;  
         SustainPedal        = false;  
147          ActiveVoiceCount    = 0;          ActiveVoiceCount    = 0;
148          ActiveVoiceCountMax = 0;          ActiveVoiceCountMax = 0;
         GlobalVolume        = 1.0;  
149    
150          // set all MIDI controller values to zero          // reset voice stealing parameters
151          memset(ControllerTable, 0x00, 128);          itLastStolenVoice = RTList<Voice>::Iterator();
152            iuiLastStolenKey  = RTList<uint>::Iterator();
153            pVoiceStealingQueue->clear();
154    
155          // reset key info          // reset to normal chromatic scale (means equal temper)
156          for (uint i = 0; i < 128; i++) {          memset(&ScaleTuning[0], 0x00, 12);
             pMIDIKeyInfo[i].pActiveVoices->clear();  
             pMIDIKeyInfo[i].pEvents->clear();  
             pMIDIKeyInfo[i].KeyPressed     = false;  
             pMIDIKeyInfo[i].Active         = false;  
             pMIDIKeyInfo[i].ReleaseTrigger = false;  
             pMIDIKeyInfo[i].pSelf          = NULL;  
         }  
   
         // reset all key groups  
         map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();  
         for (; iter != ActiveKeyGroups.end(); iter++) iter->second = NULL;  
157    
158          // reset all voices          // reset all voices
159          for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
160              pVoice->Reset();              iterVoice->Reset();
161          }          }
162          pVoicePool->clear();          pVoicePool->clear();
163    
         // free all active keys  
         pActiveKeys->clear();  
   
164          // reset disk thread          // reset disk thread
165          if (pDiskThread) pDiskThread->Reset();          if (pDiskThread) pDiskThread->Reset();
166    
# Line 188  namespace LinuxSampler { namespace gig { Line 168  namespace LinuxSampler { namespace gig {
168          pEventQueue->init();          pEventQueue->init();
169      }      }
170    
     /**  
      *  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();  
     }  
   
171      void Engine::Connect(AudioOutputDevice* pAudioOut) {      void Engine::Connect(AudioOutputDevice* pAudioOut) {
172          pAudioOutputDevice = pAudioOut;          pAudioOutputDevice = pAudioOut;
173    
# Line 294  namespace LinuxSampler { namespace gig { Line 181  namespace LinuxSampler { namespace gig {
181              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();
182              throw LinuxSamplerException(msg);              throw LinuxSamplerException(msg);
183          }          }
184            
         this->AudioDeviceChannelLeft  = 0;  
         this->AudioDeviceChannelRight = 1;  
         this->pOutputLeft             = pAudioOutputDevice->Channel(0)->Buffer();  
         this->pOutputRight            = pAudioOutputDevice->Channel(1)->Buffer();  
185          this->MaxSamplesPerCycle      = pAudioOutputDevice->MaxSamplesPerCycle();          this->MaxSamplesPerCycle      = pAudioOutputDevice->MaxSamplesPerCycle();
186          this->SampleRate              = pAudioOutputDevice->SampleRate();          this->SampleRate              = pAudioOutputDevice->SampleRate();
187    
188            // FIXME: audio drivers with varying fragment sizes might be a problem here
189            MaxFadeOutPos = MaxSamplesPerCycle - int(double(SampleRate) * EG_MIN_RELEASE_TIME) - 1;
190            if (MaxFadeOutPos < 0)
191                throw LinuxSamplerException("EG_MIN_RELEASE_TIME in EGADSR.h too big for current audio fragment size / sampling rate!");
192    
193          // (re)create disk thread          // (re)create disk thread
194          if (this->pDiskThread) {          if (this->pDiskThread) {
195                dmsg(1,("Stopping disk thread..."));
196              this->pDiskThread->StopThread();              this->pDiskThread->StopThread();
197              delete this->pDiskThread;              delete this->pDiskThread;
198                dmsg(1,("OK\n"));
199          }          }
200          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
201          if (!pDiskThread) {          if (!pDiskThread) {
# Line 313  namespace LinuxSampler { namespace gig { Line 203  namespace LinuxSampler { namespace gig {
203              exit(EXIT_FAILURE);              exit(EXIT_FAILURE);
204          }          }
205    
206          for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
207              pVoice->pDiskThread = this->pDiskThread;              iterVoice->pDiskThread = this->pDiskThread;
208              dmsg(3,("d"));              dmsg(3,("d"));
209          }          }
210          pVoicePool->clear();          pVoicePool->clear();
# Line 324  namespace LinuxSampler { namespace gig { Line 214  namespace LinuxSampler { namespace gig {
214          pEventGenerator = new EventGenerator(pAudioOut->SampleRate());          pEventGenerator = new EventGenerator(pAudioOut->SampleRate());
215    
216          // (re)allocate synthesis parameter matrix          // (re)allocate synthesis parameter matrix
217          if (pSynthesisParameters[0]) delete[] pSynthesisParameters[0];          if (pSynthesisParameters[0]) free(pSynthesisParameters[0]);
218          pSynthesisParameters[0] = new float[Event::destination_count * pAudioOut->MaxSamplesPerCycle()];  
219            #if defined(__APPLE__)
220            pSynthesisParameters[0] = (float *) malloc(Event::destination_count * sizeof(float) * pAudioOut->MaxSamplesPerCycle());
221            #else
222            pSynthesisParameters[0] = (float *) memalign(16,(Event::destination_count * sizeof(float) * pAudioOut->MaxSamplesPerCycle()));
223            #endif
224          for (int dst = 1; dst < Event::destination_count; dst++)          for (int dst = 1; dst < Event::destination_count; dst++)
225              pSynthesisParameters[dst] = pSynthesisParameters[dst - 1] + pAudioOut->MaxSamplesPerCycle();              pSynthesisParameters[dst] = pSynthesisParameters[dst - 1] + pAudioOut->MaxSamplesPerCycle();
226    
# Line 339  namespace LinuxSampler { namespace gig { Line 234  namespace LinuxSampler { namespace gig {
234          pDiskThread->StartThread();          pDiskThread->StartThread();
235          dmsg(1,("OK\n"));          dmsg(1,("OK\n"));
236    
237          for (Voice* pVoice = pVoicePool->first(); pVoice; pVoice = pVoicePool->next()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
238              if (!pVoice->pDiskThread) {              if (!iterVoice->pDiskThread) {
239                  dmsg(0,("Engine -> voice::trigger: !pDiskThread\n"));                  dmsg(0,("Engine -> voice::trigger: !pDiskThread\n"));
240                  exit(EXIT_FAILURE);                  exit(EXIT_FAILURE);
241              }              }
242          }          }
243      }      }
244    
     void Engine::DisconnectAudioOutputDevice() {  
         if (pAudioOutputDevice) { // if clause to prevent disconnect loops  
             AudioOutputDevice* olddevice = pAudioOutputDevice;  
             pAudioOutputDevice = NULL;  
             olddevice->Disconnect(this);  
             AudioDeviceChannelLeft  = -1;  
             AudioDeviceChannelRight = -1;  
         }  
     }  
   
245      /**      /**
246       *  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
247       *  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
# Line 364  namespace LinuxSampler { namespace gig { Line 249  namespace LinuxSampler { namespace gig {
249       *  converted to the appropriate value range by the audio output class (e.g.       *  converted to the appropriate value range by the audio output class (e.g.
250       *  AlsaIO or JackIO) right after.       *  AlsaIO or JackIO) right after.
251       *       *
252         *  @param pEngineChannel - the engine's channel to be rendered
253       *  @param Samples - number of sample points to be rendered       *  @param Samples - number of sample points to be rendered
254       *  @returns       0 on success       *  @returns       0 on success
255       */       */
256      int Engine::RenderAudio(uint Samples) {      int Engine::RenderAudio(LinuxSampler::gig::EngineChannel* pEngineChannel, uint Samples) {
257          dmsg(5,("RenderAudio(Samples=%d)\n", Samples));          dmsg(5,("RenderAudio(Samples=%d)\n", Samples));
258    
259          // return if no instrument loaded or engine disabled          // return if no instrument loaded or engine disabled
# Line 375  namespace LinuxSampler { namespace gig { Line 261  namespace LinuxSampler { namespace gig {
261              dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe()));              dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe()));
262              return 0;              return 0;
263          }          }
264          if (!pInstrument) {          if (!pEngineChannel->pInstrument) {
265              dmsg(5,("gig::Engine: no instrument loaded\n"));              dmsg(5,("gig::Engine: no instrument loaded\n"));
266              return 0;              return 0;
267          }          }
268    
269    
270            // update time of start and end of this audio fragment (as events' time stamps relate to this)
271            pEventGenerator->UpdateFragmentTime(Samples);
272    
273    
274          // empty the event lists for the new fragment          // empty the event lists for the new fragment
275          pEvents->clear();          pEvents->clear();
276          pCCEvents->clear();          pCCEvents->clear();
277          for (uint i = 0; i < Event::destination_count; i++) {          for (uint i = 0; i < Event::destination_count; i++) {
278              pSynthesisEvents[i]->clear();              pSynthesisEvents[i]->clear();
279          }          }
280            {
281          // read and copy events from input queue              RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
282          Event event = pEventGenerator->CreateEvent();              RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();
283          while (true) {              for(; iuiKey != end; ++iuiKey) {
284              if (!pEventQueue->pop(&event)) break;                  pEngineChannel->pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
285              pEvents->alloc_assign(event);              }
286          }          }
287    
288    
289          // update time of start and end of this audio fragment (as events' time stamps relate to this)          // get all events from the input event queue which belong to the current fragment
290          pEventGenerator->UpdateFragmentTime(Samples);          {
291                RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
292                Event* pEvent;
293                while (true) {
294                    // get next event from input event queue
295                    if (!(pEvent = eventQueueReader.pop())) break;
296                    // if younger event reached, ignore that and all subsequent ones for now
297                    if (pEvent->FragmentPos() >= Samples) {
298                        eventQueueReader--;
299                        dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
300                        pEvent->ResetFragmentPos();
301                        break;
302                    }
303                    // copy event to internal event list
304                    if (pEvents->poolIsEmpty()) {
305                        dmsg(1,("Event pool emtpy!\n"));
306                        break;
307                    }
308                    *pEvents->allocAppend() = *pEvent;
309                }
310                eventQueueReader.free(); // free all copied events from input queue
311            }
312    
313    
314          // process events          // process events
315          Event* pNextEvent = pEvents->first();          {
316          while (pNextEvent) {              RTList<Event>::Iterator itEvent = pEvents->first();
317              Event* pEvent = pNextEvent;              RTList<Event>::Iterator end     = pEvents->end();
318              pEvents->set_current(pEvent);              for (; itEvent != end; ++itEvent) {
319              pNextEvent = pEvents->next();                  switch (itEvent->Type) {
320              switch (pEvent->Type) {                      case Event::type_note_on:
321                  case Event::type_note_on:                          dmsg(5,("Engine: Note on received\n"));
322                      dmsg(5,("Audio Thread: Note on received\n"));                          ProcessNoteOn(pEngineChannel, itEvent);
323                      ProcessNoteOn(pEvent);                          break;
324                      break;                      case Event::type_note_off:
325                  case Event::type_note_off:                          dmsg(5,("Engine: Note off received\n"));
326                      dmsg(5,("Audio Thread: Note off received\n"));                          ProcessNoteOff(pEngineChannel, itEvent);
327                      ProcessNoteOff(pEvent);                          break;
328                      break;                      case Event::type_control_change:
329                  case Event::type_control_change:                          dmsg(5,("Engine: MIDI CC received\n"));
330                      dmsg(5,("Audio Thread: MIDI CC received\n"));                          ProcessControlChange(pEngineChannel, itEvent);
331                      ProcessControlChange(pEvent);                          break;
332                      break;                      case Event::type_pitchbend:
333                  case Event::type_pitchbend:                          dmsg(5,("Engine: Pitchbend received\n"));
334                      dmsg(5,("Audio Thread: Pitchbend received\n"));                          ProcessPitchbend(pEngineChannel, itEvent);
335                      ProcessPitchbend(pEvent);                          break;
336                      break;                      case Event::type_sysex:
337                            dmsg(5,("Engine: Sysex received\n"));
338                            ProcessSysex(itEvent);
339                            break;
340                    }
341              }              }
342          }          }
343    
344    
         // render audio from all active voices  
345          int active_voices = 0;          int active_voices = 0;
346          uint* piKey = pActiveKeys->first();  
347          while (piKey) { // iterate through all active keys          // render audio from all active voices
348              midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey];          {
349              pActiveKeys->set_current(piKey);              RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
350              piKey = pActiveKeys->next();              RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();
351                while (iuiKey != end) { // iterate through all active keys
352              Voice* pVoiceNext = pKey->pActiveVoices->first();                  midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
353              while (pVoiceNext) { // iterate through all voices on this key                  ++iuiKey;
354                  // already get next voice on key  
355                  Voice* pVoice = pVoiceNext;                  RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
356                  pKey->pActiveVoices->set_current(pVoice);                  RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
357                  pVoiceNext = pKey->pActiveVoices->next();                  for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
358                        // now render current voice
359                  // now render current voice                      itVoice->Render(Samples);
360                  pVoice->Render(Samples);                      if (itVoice->IsActive()) active_voices++; // still active
361                  if (pVoice->IsActive()) active_voices++; // still active                      else { // voice reached end, is now inactive
362                  else { // voice reached end, is now inactive                          FreeVoice(pEngineChannel, itVoice); // remove voice from the list of active voices
363                      KillVoiceImmediately(pVoice); // remove voice from the list of active voices                      }
364                    }
365                }
366            }
367    
368    
369            // now render all postponed voices from voice stealing
370            {
371                RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first();
372                RTList<Event>::Iterator end               = pVoiceStealingQueue->end();
373                for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {
374                    Pool<Voice>::Iterator itNewVoice =
375                        LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false);
376                    if (itNewVoice) {
377                        for (; itNewVoice; itNewVoice = itNewVoice->itChildVoice) {
378                            itNewVoice->Render(Samples);
379                            if (itNewVoice->IsActive()) active_voices++; // still active
380                            else { // voice reached end, is now inactive
381                                FreeVoice(pEngineChannel, itNewVoice); // remove voice from the list of active voices
382                            }
383                        }
384                  }                  }
385                    else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n"));
386                }
387            }
388            // reset voice stealing for the new fragment
389            pVoiceStealingQueue->clear();
390            itLastStolenVoice = RTList<Voice>::Iterator();
391            iuiLastStolenKey  = RTList<uint>::Iterator();
392    
393    
394            // free all keys which have no active voices left
395            {
396                RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
397                RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();
398                while (iuiKey != end) { // iterate through all active keys
399                    midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
400                    ++iuiKey;
401                    if (pKey->pActiveVoices->isEmpty()) FreeKey(pEngineChannel, pKey);
402                    #if DEVMODE
403                    else { // FIXME: should be removed before the final release (purpose: just a sanity check for debugging)
404                        RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
405                        RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
406                        for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
407                            if (itVoice->itKillEvent) {
408                                dmsg(1,("gig::Engine: ERROR, killed voice survived !!!\n"));
409                            }
410                        }
411                    }
412                    #endif // DEVMODE
413              }              }
             pKey->pEvents->clear(); // free all events on the key  
414          }          }
415    
416    
# Line 460  namespace LinuxSampler { namespace gig { Line 421  namespace LinuxSampler { namespace gig {
421    
422    
423          return 0;          return 0;
424      }      }    
   
     /**  
      *  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.Key      = Key;  
         event.Velocity = Velocity;  
         if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);  
         else dmsg(1,("Engine: Input event queue full!"));  
     }  
425    
426      /**      /**
427       *  Will be called by the MIDIIn Thread to signal the audio thread to release       *  Will be called by the MIDI input device whenever a MIDI system
428       *  voice(s) on the given key.       *  exclusive message has arrived.
429       *       *
430       *  @param Key      - MIDI key number of the released key       *  @param pData - pointer to sysex data
431       *  @param Velocity - MIDI release velocity value of the released key       *  @param Size  - lenght of sysex data (in bytes)
432       */       */
433      void Engine::SendNoteOff(uint8_t Key, uint8_t Velocity) {      void Engine::SendSysex(void* pData, uint Size) {
434          Event event    = pEventGenerator->CreateEvent();          Event event             = pEventGenerator->CreateEvent();
435          event.Type     = Event::type_note_off;          event.Type              = Event::type_sysex;
436          event.Key      = Key;          event.Param.Sysex.Size  = Size;
437          event.Velocity = Velocity;          if (pEventQueue->write_space() > 0) {
438          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (pSysexBuffer->write_space() >= Size) {
439          else dmsg(1,("Engine: Input event queue full!"));                  // copy sysex data to input buffer
440      }                  uint toWrite = Size;
441                    uint8_t* pPos = (uint8_t*) pData;
442      /**                  while (toWrite) {
443       *  Will be called by the MIDIIn Thread to signal the audio thread to change                      const uint writeNow = RTMath::Min(toWrite, pSysexBuffer->write_space_to_end());
444       *  the pitch value for all voices.                      pSysexBuffer->write(pPos, writeNow);
445       *                      toWrite -= writeNow;
446       *  @param Pitch - MIDI pitch value (-8192 ... +8191)                      pPos    += writeNow;
      */  
     void Engine::SendPitchbend(int Pitch) {  
         Event event = pEventGenerator->CreateEvent();  
         event.Type  = Event::type_pitchbend;  
         event.Pitch = Pitch;  
         if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);  
         else dmsg(1,("Engine: Input event queue full!"));  
     }  
447    
448      /**                  }
449       *  Will be called by the MIDIIn Thread to signal the audio thread that a                  // finally place sysex event into input event queue
450       *  continuous controller value has changed.                  pEventQueue->push(&event);
451       *              }
452       *  @param Controller - MIDI controller number of the occured control change              else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,SYSEX_BUFFER_SIZE));
453       *  @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.Controller = Controller;  
         event.Value      = Value;  
         if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);  
454          else dmsg(1,("Engine: Input event queue full!"));          else dmsg(1,("Engine: Input event queue full!"));
455      }      }
456    
457      /**      /**
458       *  Assigns and triggers a new voice for the respective MIDI key.       *  Assigns and triggers a new voice for the respective MIDI key.
459       *       *
460       *  @param pNoteOnEvent - key, velocity and time stamp of the event       *  @param pEngineChannel - engine channel on which this event occured on
461         *  @param itNoteOnEvent - key, velocity and time stamp of the event
462       */       */
463      void Engine::ProcessNoteOn(Event* pNoteOnEvent) {      void Engine::ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
464          midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOnEvent->Key];          
465            const int key = itNoteOnEvent->Param.Note.Key;
466    
467            // Change key dimension value if key is in keyswitching area
468            {
469                const ::gig::Instrument* pInstrument = pEngineChannel->pInstrument;
470                if (key >= pInstrument->DimensionKeyRange.low && key <= pInstrument->DimensionKeyRange.high)
471                    pEngineChannel->CurrentKeyDimension = ((key - pInstrument->DimensionKeyRange.low) * 128) /
472                        (pInstrument->DimensionKeyRange.high - pInstrument->DimensionKeyRange.low + 1);
473            }
474    
475            midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[key];
476    
477          pKey->KeyPressed = true; // the MIDI key was now pressed down          pKey->KeyPressed = true; // the MIDI key was now pressed down
478    
479          // cancel release process of voices on this key if needed          // cancel release process of voices on this key if needed
480          if (pKey->Active && !SustainPedal) {          if (pKey->Active && !pEngineChannel->SustainPedal) {
481              Event* pCancelReleaseEvent = pKey->pEvents->alloc();              RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend();
482              if (pCancelReleaseEvent) {              if (itCancelReleaseEvent) {
483                  *pCancelReleaseEvent = *pNoteOnEvent;                  *itCancelReleaseEvent = *itNoteOnEvent;                  // copy event
484                  pCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type                  itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type
485              }              }
486              else dmsg(1,("Event pool emtpy!\n"));              else dmsg(1,("Event pool emtpy!\n"));
487          }          }
488    
489          // allocate and trigger a new voice for the key          // move note on event to the key's own event list
490          LaunchVoice(pNoteOnEvent);          RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);
491    
492          // finally move note on event to the key's own event list          // allocate and trigger a new voice for the key
493          pEvents->move(pNoteOnEvent, pKey->pEvents);          LaunchVoice(pEngineChannel, itNoteOnEventOnKeyList, 0, false, true);
494      }      }
495    
496      /**      /**
# Line 557  namespace LinuxSampler { namespace gig { Line 499  namespace LinuxSampler { namespace gig {
499       *  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.
500       *  due to completion of sample playback).       *  due to completion of sample playback).
501       *       *
502       *  @param pNoteOffEvent - key, velocity and time stamp of the event       *  @param pEngineChannel - engine channel on which this event occured on
503         *  @param itNoteOffEvent - key, velocity and time stamp of the event
504       */       */
505      void Engine::ProcessNoteOff(Event* pNoteOffEvent) {      void Engine::ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) {
506          midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOffEvent->Key];          midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key];
507    
508          pKey->KeyPressed = false; // the MIDI key was now released          pKey->KeyPressed = false; // the MIDI key was now released
509    
510          // release voices on this key if needed          // release voices on this key if needed
511          if (pKey->Active && !SustainPedal) {          if (pKey->Active && !pEngineChannel->SustainPedal) {
512              pNoteOffEvent->Type = Event::type_release; // transform event type              itNoteOffEvent->Type = Event::type_release; // transform event type
513          }          }
514    
515            // move event to the key's own event list
516            RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);
517    
518          // spawn release triggered voice(s) if needed          // spawn release triggered voice(s) if needed
519          if (pKey->ReleaseTrigger) {          if (pKey->ReleaseTrigger) {
520              LaunchVoice(pNoteOffEvent, 0, true);              LaunchVoice(pEngineChannel, itNoteOffEventOnKeyList, 0, true, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples
521              pKey->ReleaseTrigger = false;              pKey->ReleaseTrigger = false;
522          }          }
   
         // move event to the key's own event list  
         pEvents->move(pNoteOffEvent, pKey->pEvents);  
523      }      }
524    
525      /**      /**
526       *  Moves pitchbend event from the general (input) event list to the pitch       *  Moves pitchbend event from the general (input) event list to the pitch
527       *  event list.       *  event list.
528       *       *
529       *  @param pPitchbendEvent - absolute pitch value and time stamp of the event       *  @param pEngineChannel - engine channel on which this event occured on
530         *  @param itPitchbendEvent - absolute pitch value and time stamp of the event
531       */       */
532      void Engine::ProcessPitchbend(Event* pPitchbendEvent) {      void Engine::ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent) {
533          this->Pitch = pPitchbendEvent->Pitch; // store current pitch value          pEngineChannel->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value
534          pEvents->move(pPitchbendEvent, pSynthesisEvents[Event::destination_vco]);          itPitchbendEvent.moveToEndOf(pSynthesisEvents[Event::destination_vco]);
535      }      }
536    
537      /**      /**
# Line 595  namespace LinuxSampler { namespace gig { Line 539  namespace LinuxSampler { namespace gig {
539       *  called by the ProcessNoteOn() method and by the voices itself       *  called by the ProcessNoteOn() method and by the voices itself
540       *  (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).
541       *       *
542       *  @param pNoteOnEvent        - key, velocity and time stamp of the event       *  @param pEngineChannel      - engine channel on which this event occured on
543         *  @param itNoteOnEvent       - key, velocity and time stamp of the event
544       *  @param iLayer              - layer index for the new voice (optional - only       *  @param iLayer              - layer index for the new voice (optional - only
545       *                               in case of layered sounds of course)       *                               in case of layered sounds of course)
546       *  @param ReleaseTriggerVoice - if new voice is a release triggered voice       *  @param ReleaseTriggerVoice - if new voice is a release triggered voice
547       *                               (optional, default = false)       *                               (optional, default = false)
548         *  @param VoiceStealing       - if voice stealing should be performed
549         *                               when there is no free voice
550         *                               (optional, default = true)
551         *  @returns pointer to new voice or NULL if there was no free voice or
552         *           if the voice wasn't triggered (for example when no region is
553         *           defined for the given key).
554       */       */
555      void Engine::LaunchVoice(Event* pNoteOnEvent, int iLayer, bool ReleaseTriggerVoice) {      Pool<Voice>::Iterator Engine::LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing) {
556          midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOnEvent->Key];          midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
557    
558          // allocate a new voice for the key          // allocate a new voice for the key
559          Voice* pNewVoice = pKey->pActiveVoices->alloc();          Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend();
560          if (pNewVoice) {          if (itNewVoice) {
561              // launch the new voice              // launch the new voice
562              if (pNewVoice->Trigger(pNoteOnEvent, this->Pitch, this->pInstrument, iLayer, ReleaseTriggerVoice) < 0) {              if (itNewVoice->Trigger(pEngineChannel, itNoteOnEvent, pEngineChannel->Pitch, pEngineChannel->pInstrument, iLayer, ReleaseTriggerVoice, VoiceStealing) < 0) {
563                  dmsg(1,("Triggering new voice failed!\n"));                  dmsg(4,("Voice not triggered\n"));
564                  pKey->pActiveVoices->free(pNewVoice);                  pKey->pActiveVoices->free(itNewVoice);
565              }              }
566              else { // on success              else { // on success
567                  uint** ppKeyGroup = NULL;                  uint** ppKeyGroup = NULL;
568                  if (pNewVoice->KeyGroup) { // if this voice / key belongs to a key group                  if (itNewVoice->KeyGroup) { // if this voice / key belongs to a key group
569                      ppKeyGroup = &ActiveKeyGroups[pNewVoice->KeyGroup];                      ppKeyGroup = &pEngineChannel->ActiveKeyGroups[itNewVoice->KeyGroup];
570                      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
571                          midi_key_info_t* pOtherKey = &pMIDIKeyInfo[**ppKeyGroup];                          midi_key_info_t* pOtherKey = &pEngineChannel->pMIDIKeyInfo[**ppKeyGroup];
572                          // kill all voices on the (other) key                          // kill all voices on the (other) key
573                          Voice* pVoiceToBeKilled = pOtherKey->pActiveVoices->first();                          RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first();
574                          while (pVoiceToBeKilled) {                          RTList<Voice>::Iterator end               = pOtherKey->pActiveVoices->end();
575                              Voice* pVoiceToBeKilledNext = pOtherKey->pActiveVoices->next();                          for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
576                              if (pVoiceToBeKilled->Type != Voice::type_release_trigger) pVoiceToBeKilled->Kill(pNoteOnEvent);                              if (itVoiceToBeKilled->Type != Voice::type_release_trigger) itVoiceToBeKilled->Kill(itNoteOnEvent);
                             pOtherKey->pActiveVoices->set_current(pVoiceToBeKilled);  
                             pVoiceToBeKilled = pVoiceToBeKilledNext;  
577                          }                          }
578                      }                      }
579                  }                  }
580                  if (!pKey->Active) { // mark as active key                  if (!pKey->Active) { // mark as active key
581                      pKey->Active = true;                      pKey->Active = true;
582                      pKey->pSelf  = pActiveKeys->alloc();                      pKey->itSelf = pEngineChannel->pActiveKeys->allocAppend();
583                      *pKey->pSelf = pNoteOnEvent->Key;                      *pKey->itSelf = itNoteOnEvent->Param.Note.Key;
584                    }
585                    if (itNewVoice->KeyGroup) {
586                        *ppKeyGroup = &*pKey->itSelf; // put key as the (new) active key to its key group
587                    }
588                    if (itNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s)
589                    return itNewVoice; // success
590                }
591            }
592            else if (VoiceStealing) {
593                // first, get total amount of required voices (dependant on amount of layers)
594                ::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOnEvent->Param.Note.Key);
595                if (!pRegion) return Pool<Voice>::Iterator(); // nothing defined for this MIDI key, so no voice needed
596                int voicesRequired = pRegion->Layers;
597    
598                // now steal the (remaining) amount of voices
599                for (int i = iLayer; i < voicesRequired; i++)
600                    StealVoice(pEngineChannel, itNoteOnEvent);
601    
602                // put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died
603                RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend();
604                if (itStealEvent) {
605                    *itStealEvent = *itNoteOnEvent; // copy event
606                    itStealEvent->Param.Note.Layer = iLayer;
607                    itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice;
608                }
609                else dmsg(1,("Voice stealing queue full!\n"));
610            }
611    
612            return Pool<Voice>::Iterator(); // no free voice or error
613        }
614    
615        /**
616         *  Will be called by LaunchVoice() method in case there are no free
617         *  voices left. This method will select and kill one old voice for
618         *  voice stealing and postpone the note-on event until the selected
619         *  voice actually died.
620         *
621         *  @param pEngineChannel - engine channel on which this event occured on
622         *  @param itNoteOnEvent - key, velocity and time stamp of the event
623         */
624        void Engine::StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
625            if (!pEventPool->poolIsEmpty()) {
626    
627                RTList<uint>::Iterator  iuiOldestKey;
628                RTList<Voice>::Iterator itOldestVoice;
629    
630                // Select one voice for voice stealing
631                switch (VOICE_STEAL_ALGORITHM) {
632    
633                    // try to pick the oldest voice on the key where the new
634                    // voice should be spawned, if there is no voice on that
635                    // key, or no voice left to kill there, then procceed with
636                    // 'oldestkey' algorithm
637                    case voice_steal_algo_keymask: {
638                        midi_key_info_t* pOldestKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
639                        if (itLastStolenVoice) {
640                            itOldestVoice = itLastStolenVoice;
641                            ++itOldestVoice;
642                        }
643                        else { // no voice stolen in this audio fragment cycle yet
644                            itOldestVoice = pOldestKey->pActiveVoices->first();
645                        }
646                        if (itOldestVoice) {
647                            iuiOldestKey = pOldestKey->itSelf;
648                            break; // selection succeeded
649                        }
650                    } // no break - intentional !
651    
652                    // try to pick the oldest voice on the oldest active key
653                    // (caution: must stay after 'keymask' algorithm !)
654                    case voice_steal_algo_oldestkey: {
655                        if (itLastStolenVoice) {
656                            midi_key_info_t* pOldestKey = &pEngineChannel->pMIDIKeyInfo[*iuiLastStolenKey];
657                            itOldestVoice = itLastStolenVoice;
658                            ++itOldestVoice;
659                            if (!itOldestVoice) {
660                                iuiOldestKey = iuiLastStolenKey;
661                                ++iuiOldestKey;
662                                if (iuiOldestKey) {
663                                    midi_key_info_t* pOldestKey = &pEngineChannel->pMIDIKeyInfo[*iuiOldestKey];
664                                    itOldestVoice = pOldestKey->pActiveVoices->first();
665                                }
666                                else {
667                                    dmsg(1,("gig::Engine: Warning, too less voices, even for voice stealing! - Better recompile with higher MAX_AUDIO_VOICES.\n"));
668                                    return;
669                                }
670                            }
671                            else iuiOldestKey = iuiLastStolenKey;
672                        }
673                        else { // no voice stolen in this audio fragment cycle yet
674                            iuiOldestKey = pEngineChannel->pActiveKeys->first();
675                            midi_key_info_t* pOldestKey = &pEngineChannel->pMIDIKeyInfo[*iuiOldestKey];
676                            itOldestVoice = pOldestKey->pActiveVoices->first();
677                        }
678                        break;
679                  }                  }
680                  if (pNewVoice->KeyGroup) {  
681                      *ppKeyGroup = pKey->pSelf; // put key as the (new) active key to its key group                  // don't steal anything
682                    case voice_steal_algo_none:
683                    default: {
684                        dmsg(1,("No free voice (voice stealing disabled)!\n"));
685                        return;
686                  }                  }
                 if (pNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s)  
687              }              }
688    
689                //FIXME: can be removed, just a sanity check for debugging
690                if (!itOldestVoice->IsActive()) dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n"));
691    
692                // now kill the selected voice
693                itOldestVoice->Kill(itNoteOnEvent);
694                // remember which voice on which key we stole, so we can simply proceed for the next voice stealing
695                this->itLastStolenVoice = itOldestVoice;
696                this->iuiLastStolenKey = iuiOldestKey;
697          }          }
698          else std::cerr << "No free voice!" << std::endl << std::flush;          else dmsg(1,("Event pool emtpy!\n"));
699      }      }
700    
701      /**      /**
702       *  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.
703       *  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
704       *  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
705         *  just was killed.
706       *       *
707       *  @param pVoice - points to the voice to be killed       *  @param pEngineChannel - engine channel on which this event occured on
708         *  @param itVoice - points to the voice to be freed
709       */       */
710      void Engine::KillVoiceImmediately(Voice* pVoice) {      void Engine::FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice) {
711          if (pVoice) {          if (itVoice) {
712              if (pVoice->IsActive()) pVoice->KillImmediately();              midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoice->MIDIKey];
713    
714              midi_key_info_t* pKey = &pMIDIKeyInfo[pVoice->MIDIKey];              uint keygroup = itVoice->KeyGroup;
715    
716              // free the voice object              // free the voice object
717              pVoicePool->free(pVoice);              pVoicePool->free(itVoice);
718    
719              // 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
720              if (pKey->pActiveVoices->is_empty()) {              if (pKey->pActiveVoices->isEmpty() && keygroup) {
721                  if (pVoice->KeyGroup) { // if voice / key belongs to a key group                  uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[keygroup];
722                      uint** ppKeyGroup = &ActiveKeyGroups[pVoice->KeyGroup];                  if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group
                     if (*ppKeyGroup == pKey->pSelf) *ppKeyGroup = NULL; // remove key from key group  
                 }  
                 pKey->Active = false;  
                 pActiveKeys->free(pKey->pSelf); // remove key from list of active keys  
                 pKey->pSelf = NULL;  
                 pKey->ReleaseTrigger = false;  
                 dmsg(3,("Key has no more voices now\n"));  
723              }              }
724          }          }
725          else std::cerr << "Couldn't release voice! (pVoice == NULL)\n" << std::flush;          else std::cerr << "Couldn't release voice! (!itVoice)\n" << std::flush;
726        }
727    
728        /**
729         *  Called when there's no more voice left on a key, this call will
730         *  update the key info respectively.
731         *
732         *  @param pEngineChannel - engine channel on which this event occured on
733         *  @param pKey - key which is now inactive
734         */
735        void Engine::FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey) {
736            if (pKey->pActiveVoices->isEmpty()) {
737                pKey->Active = false;
738                pEngineChannel->pActiveKeys->free(pKey->itSelf); // remove key from list of active keys
739                pKey->itSelf = RTList<uint>::Iterator();
740                pKey->ReleaseTrigger = false;
741                pKey->pEvents->clear();
742                dmsg(3,("Key has no more voices now\n"));
743            }
744            else dmsg(1,("gig::Engine: Oops, tried to free a key which contains voices.\n"));
745      }      }
746    
747      /**      /**
748       *  Reacts on supported control change commands (e.g. pitch bend wheel,       *  Reacts on supported control change commands (e.g. pitch bend wheel,
749       *  modulation wheel, aftertouch).       *  modulation wheel, aftertouch).
750       *       *
751       *  @param pControlChangeEvent - controller, value and time stamp of the event       *  @param pEngineChannel - engine channel on which this event occured on
752         *  @param itControlChangeEvent - controller, value and time stamp of the event
753       */       */
754      void Engine::ProcessControlChange(Event* pControlChangeEvent) {      void Engine::ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent) {
755          dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", pControlChangeEvent->Controller, pControlChangeEvent->Value));          dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value));
756    
757          switch (pControlChangeEvent->Controller) {          switch (itControlChangeEvent->Param.CC.Controller) {
758              case 64: {              case 64: {
759                  if (pControlChangeEvent->Value >= 64 && !SustainPedal) {                  if (itControlChangeEvent->Param.CC.Value >= 64 && !pEngineChannel->SustainPedal) {
760                      dmsg(4,("PEDAL DOWN\n"));                      dmsg(4,("PEDAL DOWN\n"));
761                      SustainPedal = true;                      pEngineChannel->SustainPedal = true;
762    
763                      // cancel release process of voices if necessary                      // cancel release process of voices if necessary
764                      uint* piKey = pActiveKeys->first();                      RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
765                      if (piKey) {                      if (iuiKey) {
766                          pControlChangeEvent->Type = Event::type_cancel_release; // transform event type                          itControlChangeEvent->Type = Event::type_cancel_release; // transform event type
767                          while (piKey) {                          while (iuiKey) {
768                              midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey];                              midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
769                              pActiveKeys->set_current(piKey);                              ++iuiKey;
                             piKey = pActiveKeys->next();  
770                              if (!pKey->KeyPressed) {                              if (!pKey->KeyPressed) {
771                                  Event* pNewEvent = pKey->pEvents->alloc();                                  RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();
772                                  if (pNewEvent) *pNewEvent = *pControlChangeEvent; // copy event to the key's own event list                                  if (itNewEvent) *itNewEvent = *itControlChangeEvent; // copy event to the key's own event list
773                                  else dmsg(1,("Event pool emtpy!\n"));                                  else dmsg(1,("Event pool emtpy!\n"));
774                              }                              }
775                          }                          }
776                      }                      }
777                  }                  }
778                  if (pControlChangeEvent->Value < 64 && SustainPedal) {                  if (itControlChangeEvent->Param.CC.Value < 64 && pEngineChannel->SustainPedal) {
779                      dmsg(4,("PEDAL UP\n"));                      dmsg(4,("PEDAL UP\n"));
780                      SustainPedal = false;                      pEngineChannel->SustainPedal = false;
781    
782                      // release voices if their respective key is not pressed                      // release voices if their respective key is not pressed
783                      uint* piKey = pActiveKeys->first();                      RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
784                      if (piKey) {                      if (iuiKey) {
785                          pControlChangeEvent->Type = Event::type_release; // transform event type                          itControlChangeEvent->Type = Event::type_release; // transform event type
786                          while (piKey) {                          while (iuiKey) {
787                              midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey];                              midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
788                              pActiveKeys->set_current(piKey);                              ++iuiKey;
                             piKey = pActiveKeys->next();  
789                              if (!pKey->KeyPressed) {                              if (!pKey->KeyPressed) {
790                                  Event* pNewEvent = pKey->pEvents->alloc();                                  RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();
791                                  if (pNewEvent) *pNewEvent = *pControlChangeEvent; // copy event to the key's own event list                                  if (itNewEvent) *itNewEvent = *itControlChangeEvent; // copy event to the key's own event list
792                                  else dmsg(1,("Event pool emtpy!\n"));                                  else dmsg(1,("Event pool emtpy!\n"));
793                              }                              }
794                          }                          }
# Line 730  namespace LinuxSampler { namespace gig { Line 799  namespace LinuxSampler { namespace gig {
799          }          }
800    
801          // update controller value in the engine's controller table          // update controller value in the engine's controller table
802          ControllerTable[pControlChangeEvent->Controller] = pControlChangeEvent->Value;          pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;
803    
804          // 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
805          pEvents->move(pControlChangeEvent, pCCEvents);          itControlChangeEvent.moveToEndOf(pCCEvents);
806        }
807    
808        /**
809         *  Reacts on MIDI system exclusive messages.
810         *
811         *  @param itSysexEvent - sysex data size and time stamp of the sysex event
812         */
813        void Engine::ProcessSysex(Pool<Event>::Iterator& itSysexEvent) {
814            RingBuffer<uint8_t>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader();
815    
816            uint8_t exclusive_status, id;
817            if (!reader.pop(&exclusive_status)) goto free_sysex_data;
818            if (!reader.pop(&id))               goto free_sysex_data;
819            if (exclusive_status != 0xF0)       goto free_sysex_data;
820    
821            switch (id) {
822                case 0x41: { // Roland
823                    uint8_t device_id, model_id, cmd_id;
824                    if (!reader.pop(&device_id)) goto free_sysex_data;
825                    if (!reader.pop(&model_id))  goto free_sysex_data;
826                    if (!reader.pop(&cmd_id))    goto free_sysex_data;
827                    if (model_id != 0x42 /*GS*/) goto free_sysex_data;
828                    if (cmd_id != 0x12 /*DT1*/)  goto free_sysex_data;
829    
830                    // command address
831                    uint8_t addr[3]; // 2 byte addr MSB, followed by 1 byte addr LSB)
832                    const RingBuffer<uint8_t>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later
833                    if (reader.read(&addr[0], 3) != 3) goto free_sysex_data;
834                    if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters
835                    }
836                    else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters
837                    }
838                    else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1)
839                        switch (addr[3]) {
840                            case 0x40: { // scale tuning
841                                uint8_t scale_tunes[12]; // detuning of all 12 semitones of an octave
842                                if (reader.read(&scale_tunes[0], 12) != 12) goto free_sysex_data;
843                                uint8_t checksum;
844                                if (!reader.pop(&checksum))                      goto free_sysex_data;
845                                if (GSCheckSum(checksum_reader, 12) != checksum) goto free_sysex_data;
846                                for (int i = 0; i < 12; i++) scale_tunes[i] -= 64;
847                                AdjustScale((int8_t*) scale_tunes);
848                                break;
849                            }
850                        }
851                    }
852                    else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2)
853                    }
854                    else if (addr[0] == 0x41) { // Drum Setup Parameters
855                    }
856                    break;
857                }
858            }
859    
860            free_sysex_data: // finally free sysex data
861            pSysexBuffer->increment_read_ptr(itSysexEvent->Param.Sysex.Size);
862        }
863    
864        /**
865         * Calculates the Roland GS sysex check sum.
866         *
867         * @param AddrReader - reader which currently points to the first GS
868         *                     command address byte of the GS sysex message in
869         *                     question
870         * @param DataSize   - size of the GS message data (in bytes)
871         */
872        uint8_t Engine::GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize) {
873            RingBuffer<uint8_t>::NonVolatileReader reader = AddrReader;
874            uint bytes = 3 /*addr*/ + DataSize;
875            uint8_t addr_and_data[bytes];
876            reader.read(&addr_and_data[0], bytes);
877            uint8_t sum = 0;
878            for (uint i = 0; i < bytes; i++) sum += addr_and_data[i];
879            return 128 - sum % 128;
880        }
881    
882        /**
883         * Allows to tune each of the twelve semitones of an octave.
884         *
885         * @param ScaleTunes - detuning of all twelve semitones (in cents)
886         */
887        void Engine::AdjustScale(int8_t ScaleTunes[12]) {
888            memcpy(&this->ScaleTuning[0], &ScaleTunes[0], 12); //TODO: currently not sample accurate
889      }      }
890    
891      /**      /**
# Line 749  namespace LinuxSampler { namespace gig { Line 901  namespace LinuxSampler { namespace gig {
901             m[i+2] = val;             m[i+2] = val;
902             m[i+3] = val;             m[i+3] = val;
903          }          }
904      }      }    
   
     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));  
         }  
     }  
905    
906      uint Engine::VoiceCount() {      uint Engine::VoiceCount() {
907          return ActiveVoiceCount;          return ActiveVoiceCount;
# Line 823  namespace LinuxSampler { namespace gig { Line 935  namespace LinuxSampler { namespace gig {
935          return "GigEngine";          return "GigEngine";
936      }      }
937    
     String Engine::InstrumentFileName() {  
         return InstrumentFile;  
     }  
   
     int Engine::InstrumentIndex() {  
         return InstrumentIdx;  
     }  
   
     int Engine::InstrumentStatus() {  
         return InstrumentStat;  
     }  
   
938      String Engine::Description() {      String Engine::Description() {
939          return "Gigasampler Engine";          return "Gigasampler Engine";
940      }      }
941    
942      String Engine::Version() {      String Engine::Version() {
943          String s = "$Revision: 1.11 $";          String s = "$Revision: 1.26 $";
944          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
945      }      }
946    
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