/[svn]/linuxsampler/trunk/src/engines/gig/Engine.cpp
ViewVC logotype

Diff of /linuxsampler/trunk/src/engines/gig/Engine.cpp

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 133 by capela, Fri Jun 18 14:29:02 2004 UTC revision 659 by schoenebeck, Thu Jun 16 21:35:30 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.add(pChannel);
68            // remember index in the ArrayList
69            pChannel->iEngineIndexSelf = pEngine->engineChannels.size() - 1;
70            dmsg(4,("This gig::Engine has now %d EngineChannels.\n",pEngine->engineChannels.size()));
71            return pEngine;
72        }
73    
74        /**
75         * Once an engine channel is disconnected from an audio output device,
76         * it wil immediately call this method to unregister itself from the
77         * engine instance and if that engine instance is not used by any other
78         * engine channel anymore, then that engine instance will be destroyed.
79         *
80         * @param pChannel - engine channel which wants to disconnect from it's
81         *                   engine instance
82         * @param pDevice  - audio output device \a pChannel was connected to
83         */
84        void Engine::FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) {
85            dmsg(4,("Disconnecting EngineChannel from gig::Engine.\n"));
86            Engine* pEngine = engines[pDevice];
87            // unregister EngineChannel from the Engine instance
88            pEngine->engineChannels.remove(pChannel);
89            // if the used Engine instance is not used anymore, then destroy it
90            if (pEngine->engineChannels.empty()) {
91                pDevice->Disconnect(pEngine);
92                engines.erase(pDevice);
93                delete pEngine;
94                dmsg(4,("Destroying gig::Engine.\n"));
95            }
96            else dmsg(4,("This gig::Engine has now %d EngineChannels.\n",pEngine->engineChannels.size()));
97        }
98    
99        /**
100         * Constructor
101         */
102      Engine::Engine() {      Engine::Engine() {
         pRIFF              = NULL;  
         pGig               = NULL;  
         pInstrument        = NULL;  
103          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
104          pDiskThread        = NULL;          pDiskThread        = NULL;
105          pEventGenerator    = NULL;          pEventGenerator    = NULL;
106          pEventQueue        = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT);          pSysexBuffer       = new RingBuffer<uint8_t>(CONFIG_SYSEX_BUFFER_SIZE, 0);
107          pEventPool         = new RTELMemoryPool<Event>(MAX_EVENTS_PER_FRAGMENT);          pEventQueue        = new RingBuffer<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);
108          pVoicePool         = new RTELMemoryPool<Voice>(MAX_AUDIO_VOICES);          pEventPool         = new Pool<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT);
109          pActiveKeys        = new RTELMemoryPool<uint>(128);          pVoicePool         = new Pool<Voice>(CONFIG_MAX_VOICES);
110          pEvents            = new RTEList<Event>(pEventPool);          pVoiceStealingQueue = new RTList<Event>(pEventPool);
111          pCCEvents          = new RTEList<Event>(pEventPool);          pGlobalEvents      = new RTList<Event>(pEventPool);
112          for (uint i = 0; i < Event::destination_count; i++) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
113              pSynthesisEvents[i] = new RTEList<Event>(pEventPool);              iterVoice->SetEngine(this);
         }  
         for (uint i = 0; i < 128; i++) {  
             pMIDIKeyInfo[i].pActiveVoices = new RTEList<Voice>(pVoicePool);  
             pMIDIKeyInfo[i].KeyPressed    = false;  
             pMIDIKeyInfo[i].Active        = false;  
             pMIDIKeyInfo[i].pSelf         = NULL;  
             pMIDIKeyInfo[i].pEvents       = new RTEList<Event>(pEventPool);  
         }  
         for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) {  
             pVoice->SetEngine(this);  
114          }          }
115          pVoicePool->clear();          pVoicePool->clear();
116    
# Line 62  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;  
   
121          ResetInternal();          ResetInternal();
122            ResetScaleTuning();
123      }      }
124    
125        /**
126         * Destructor
127         */
128      Engine::~Engine() {      Engine::~Engine() {
129          if (pDiskThread) {          if (pDiskThread) {
130                dmsg(1,("Stopping disk thread..."));
131              pDiskThread->StopThread();              pDiskThread->StopThread();
132              delete pDiskThread;              delete pDiskThread;
133                dmsg(1,("OK\n"));
134          }          }
         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;  
         }  
         for (uint i = 0; i < Event::destination_count; i++) {  
             if (pSynthesisEvents[i]) delete pSynthesisEvents[i];  
         }  
         delete[] pSynthesisEvents;  
         if (pEvents)     delete pEvents;  
         if (pCCEvents)   delete pCCEvents;  
135          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
136          if (pEventPool)  delete pEventPool;          if (pEventPool)  delete pEventPool;
137          if (pVoicePool)  delete pVoicePool;          if (pVoicePool) {
138          if (pActiveKeys) delete pActiveKeys;              pVoicePool->clear();
139                delete pVoicePool;
140            }
141          if (pEventGenerator) delete pEventGenerator;          if (pEventGenerator) delete pEventGenerator;
142          if (pMainFilterParameters) delete[] pMainFilterParameters;          if (pMainFilterParameters) delete[] pMainFilterParameters;
143          if (pBasicFilterParameters) delete[] pBasicFilterParameters;          if (pBasicFilterParameters) delete[] pBasicFilterParameters;
144          if (pSynthesisParameters[0]) delete[] pSynthesisParameters[0];          if (pSynthesisParameters[0]) free(pSynthesisParameters[0]);
145            if (pVoiceStealingQueue) delete pVoiceStealingQueue;
146            if (pSysexBuffer) delete pSysexBuffer;
147            EngineFactory::Destroy(this);
148      }      }
149    
150      void Engine::Enable() {      void Engine::Enable() {
# Line 119  namespace LinuxSampler { namespace gig { Line 171  namespace LinuxSampler { namespace gig {
171       */       */
172      void Engine::Reset() {      void Engine::Reset() {
173          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();  
   
174          ResetInternal();          ResetInternal();
175            ResetScaleTuning();
         // signal audio thread to continue with rendering  
         //SuspensionRequested = false;  
176          Enable();          Enable();
177      }      }
178    
# Line 145  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;
186    
187          // set all MIDI controller values to zero          // reset voice stealing parameters
188          memset(ControllerTable, 0x00, 128);          pVoiceStealingQueue->clear();
189            itLastStolenVoice          = RTList<Voice>::Iterator();
190          // reset key info          itLastStolenVoiceGlobally  = RTList<Voice>::Iterator();
191          for (uint i = 0; i < 128; i++) {          iuiLastStolenKey           = RTList<uint>::Iterator();
192              pMIDIKeyInfo[i].pActiveVoices->clear();          iuiLastStolenKeyGlobally   = RTList<uint>::Iterator();
193              pMIDIKeyInfo[i].pEvents->clear();          pLastStolenChannel         = NULL;
             pMIDIKeyInfo[i].KeyPressed = false;  
             pMIDIKeyInfo[i].Active     = false;  
             pMIDIKeyInfo[i].pSelf      = NULL;  
         }  
194    
195          // reset all voices          // reset all voices
196          for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
197              pVoice->Reset();              iterVoice->Reset();
198          }          }
199          pVoicePool->clear();          pVoicePool->clear();
200    
         // free all active keys  
         pActiveKeys->clear();  
   
201          // reset disk thread          // reset disk thread
202          if (pDiskThread) pDiskThread->Reset();          if (pDiskThread) pDiskThread->Reset();
203    
# Line 179  namespace LinuxSampler { namespace gig { Line 206  namespace LinuxSampler { namespace gig {
206      }      }
207    
208      /**      /**
209       *  Load an instrument from a .gig file.       * Reset to normal, chromatic scale (means equal tempered).
      *  
      *  @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  
210       */       */
211      void Engine::LoadInstrument(const char* FileName, uint Instrument) {      void Engine::ResetScaleTuning() {
212            memset(&ScaleTuning[0], 0x00, 12);
         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;  
   
         // 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.");  
         }  
   
         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;  
213      }      }
214    
215      /**      /**
216       * Will be called by the InstrumentResourceManager when the instrument       * Connect this engine instance with the given audio output device.
217       * update process was completed, so we can continue with playback.       * This method will be called when an Engine instance is created.
218         * All of the engine's data structures which are dependant to the used
219         * audio output device / driver will be (re)allocated and / or
220         * adjusted appropriately.
221         *
222         * @param pAudioOut - audio output device to connect to
223       */       */
     void Engine::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {  
         this->pInstrument = pNewResource;  
         Enable();  
     }  
   
224      void Engine::Connect(AudioOutputDevice* pAudioOut) {      void Engine::Connect(AudioOutputDevice* pAudioOut) {
225          pAudioOutputDevice = pAudioOut;          pAudioOutputDevice = pAudioOut;
226    
# Line 278  namespace LinuxSampler { namespace gig { Line 235  namespace LinuxSampler { namespace gig {
235              throw LinuxSamplerException(msg);              throw LinuxSamplerException(msg);
236          }          }
237    
238            this->MaxSamplesPerCycle = pAudioOutputDevice->MaxSamplesPerCycle();
239            this->SampleRate         = pAudioOutputDevice->SampleRate();
240    
241            // FIXME: audio drivers with varying fragment sizes might be a problem here
242            MaxFadeOutPos = MaxSamplesPerCycle - int(double(SampleRate) * CONFIG_EG_MIN_RELEASE_TIME) - 1;
243            if (MaxFadeOutPos < 0)
244                throw LinuxSamplerException("CONFIG_EG_MIN_RELEASE_TIME too big for current audio fragment size / sampling rate!");
245    
246          // (re)create disk thread          // (re)create disk thread
247          if (this->pDiskThread) {          if (this->pDiskThread) {
248                dmsg(1,("Stopping disk thread..."));
249              this->pDiskThread->StopThread();              this->pDiskThread->StopThread();
250              delete this->pDiskThread;              delete this->pDiskThread;
251                dmsg(1,("OK\n"));
252          }          }
253          this->pDiskThread = new DiskThread(((pAudioOut->MaxSamplesPerCycle() << MAX_PITCH) << 1) + 6); //FIXME: assuming stereo          this->pDiskThread = new DiskThread(((pAudioOut->MaxSamplesPerCycle() << CONFIG_MAX_PITCH) << 1) + 6); //FIXME: assuming stereo
254          if (!pDiskThread) {          if (!pDiskThread) {
255              dmsg(0,("gig::Engine  new diskthread = NULL\n"));              dmsg(0,("gig::Engine  new diskthread = NULL\n"));
256              exit(EXIT_FAILURE);              exit(EXIT_FAILURE);
257          }          }
258    
259          for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
260              pVoice->pDiskThread = this->pDiskThread;              iterVoice->pDiskThread = this->pDiskThread;
             pVoice->SetOutput(pAudioOut);  
261              dmsg(3,("d"));              dmsg(3,("d"));
262          }          }
263          pVoicePool->clear();          pVoicePool->clear();
# Line 301  namespace LinuxSampler { namespace gig { Line 267  namespace LinuxSampler { namespace gig {
267          pEventGenerator = new EventGenerator(pAudioOut->SampleRate());          pEventGenerator = new EventGenerator(pAudioOut->SampleRate());
268    
269          // (re)allocate synthesis parameter matrix          // (re)allocate synthesis parameter matrix
270          if (pSynthesisParameters[0]) delete[] pSynthesisParameters[0];          if (pSynthesisParameters[0]) free(pSynthesisParameters[0]);
271          pSynthesisParameters[0] = new float[Event::destination_count * pAudioOut->MaxSamplesPerCycle()];  
272            #if defined(__APPLE__)
273            pSynthesisParameters[0] = (float *) malloc(Event::destination_count * sizeof(float) * pAudioOut->MaxSamplesPerCycle());
274            #else
275            pSynthesisParameters[0] = (float *) memalign(16,(Event::destination_count * sizeof(float) * pAudioOut->MaxSamplesPerCycle()));
276            #endif
277          for (int dst = 1; dst < Event::destination_count; dst++)          for (int dst = 1; dst < Event::destination_count; dst++)
278              pSynthesisParameters[dst] = pSynthesisParameters[dst - 1] + pAudioOut->MaxSamplesPerCycle();              pSynthesisParameters[dst] = pSynthesisParameters[dst - 1] + pAudioOut->MaxSamplesPerCycle();
279    
# Line 316  namespace LinuxSampler { namespace gig { Line 287  namespace LinuxSampler { namespace gig {
287          pDiskThread->StartThread();          pDiskThread->StartThread();
288          dmsg(1,("OK\n"));          dmsg(1,("OK\n"));
289    
290          for (Voice* pVoice = pVoicePool->first(); pVoice; pVoice = pVoicePool->next()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
291              if (!pVoice->pDiskThread) {              if (!iterVoice->pDiskThread) {
292                  dmsg(0,("Engine -> voice::trigger: !pDiskThread\n"));                  dmsg(0,("Engine -> voice::trigger: !pDiskThread\n"));
293                  exit(EXIT_FAILURE);                  exit(EXIT_FAILURE);
294              }              }
295          }          }
296      }      }
297    
298      void Engine::DisconnectAudioOutputDevice() {      /**
299          if (pAudioOutputDevice) { // if clause to prevent disconnect loops       * Clear all engine global event lists.
300              AudioOutputDevice* olddevice = pAudioOutputDevice;       */
301              pAudioOutputDevice = NULL;      void Engine::ClearEventLists() {
302              olddevice->Disconnect(this);          pGlobalEvents->clear();
303        }
304    
305        /**
306         * Copy all events from the engine's global input queue buffer to the
307         * engine's internal event list. This will be done at the beginning of
308         * each audio cycle (that is each RenderAudio() call) to distinguish
309         * all global events which have to be processed in the current audio
310         * cycle. These events are usually just SysEx messages. Every
311         * EngineChannel has it's own input event queue buffer and event list
312         * to handle common events like NoteOn, NoteOff and ControlChange
313         * events.
314         *
315         * @param Samples - number of sample points to be processed in the
316         *                  current audio cycle
317         */
318        void Engine::ImportEvents(uint Samples) {
319            RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
320            Event* pEvent;
321            while (true) {
322                // get next event from input event queue
323                if (!(pEvent = eventQueueReader.pop())) break;
324                // if younger event reached, ignore that and all subsequent ones for now
325                if (pEvent->FragmentPos() >= Samples) {
326                    eventQueueReader--;
327                    dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
328                    pEvent->ResetFragmentPos();
329                    break;
330                }
331                // copy event to internal event list
332                if (pGlobalEvents->poolIsEmpty()) {
333                    dmsg(1,("Event pool emtpy!\n"));
334                    break;
335                }
336                *pGlobalEvents->allocAppend() = *pEvent;
337          }          }
338            eventQueueReader.free(); // free all copied events from input queue
339      }      }
340    
341      /**      /**
# Line 345  namespace LinuxSampler { namespace gig { Line 351  namespace LinuxSampler { namespace gig {
351      int Engine::RenderAudio(uint Samples) {      int Engine::RenderAudio(uint Samples) {
352          dmsg(5,("RenderAudio(Samples=%d)\n", Samples));          dmsg(5,("RenderAudio(Samples=%d)\n", Samples));
353    
354          // return if no instrument loaded or engine disabled          // return if engine disabled
355          if (EngineDisabled.Pop()) {          if (EngineDisabled.Pop()) {
356              dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe()));              dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe()));
357              return 0;              return 0;
358          }          }
         if (!pInstrument) {  
             dmsg(5,("gig::Engine: no instrument loaded\n"));  
             return 0;  
         }  
   
359    
360          // empty the event lists for the new fragment          // update time of start and end of this audio fragment (as events' time stamps relate to this)
361          pEvents->clear();          pEventGenerator->UpdateFragmentTime(Samples);
         pCCEvents->clear();  
         for (uint i = 0; i < Event::destination_count; i++) {  
             pSynthesisEvents[i]->clear();  
         }  
362    
363          // read and copy events from input queue          // get all events from the engine's global input event queue which belong to the current fragment
364          Event event = pEventGenerator->CreateEvent();          // (these are usually just SysEx messages)
365          while (true) {          ImportEvents(Samples);
366              if (!pEventQueue->pop(&event)) break;  
367              pEvents->alloc_assign(event);          // process engine global events (these are currently only MIDI System Exclusive messages)
368            {
369                RTList<Event>::Iterator itEvent = pGlobalEvents->first();
370                RTList<Event>::Iterator end     = pGlobalEvents->end();
371                for (; itEvent != end; ++itEvent) {
372                    switch (itEvent->Type) {
373                        case Event::type_sysex:
374                            dmsg(5,("Engine: Sysex received\n"));
375                            ProcessSysex(itEvent);
376                            break;
377                    }
378                }
379          }          }
380    
381            // We only allow a maximum of CONFIG_MAX_VOICES voices to be stolen
382            // in each audio fragment. All subsequent request for spawning new
383            // voices in the same audio fragment will be ignored.
384            VoiceTheftsLeft = CONFIG_MAX_VOICES;
385    
386          // update time of start and end of this audio fragment (as events' time stamps relate to this)          // reset internal voice counter (just for statistic of active voices)
387          pEventGenerator->UpdateFragmentTime(Samples);          ActiveVoiceCountTemp = 0;
388    
389    
390          // process events          // handle events on all engine channels
391          Event* pNextEvent = pEvents->first();          for (int i = 0; i < engineChannels.size(); i++) {
392          while (pNextEvent) {              if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded
393              Event* pEvent = pNextEvent;              ProcessEvents(engineChannels[i], Samples);
             pEvents->set_current(pEvent);  
             pNextEvent = pEvents->next();  
             switch (pEvent->Type) {  
                 case Event::type_note_on:  
                     dmsg(5,("Audio Thread: Note on received\n"));  
                     ProcessNoteOn(pEvent);  
                     break;  
                 case Event::type_note_off:  
                     dmsg(5,("Audio Thread: Note off received\n"));  
                     ProcessNoteOff(pEvent);  
                     break;  
                 case Event::type_control_change:  
                     dmsg(5,("Audio Thread: MIDI CC received\n"));  
                     ProcessControlChange(pEvent);  
                     break;  
                 case Event::type_pitchbend:  
                     dmsg(5,("Audio Thread: Pitchbend received\n"));  
                     ProcessPitchbend(pEvent);  
                     break;  
             }  
394          }          }
395    
396            // render all 'normal', active voices on all engine channels
397            for (int i = 0; i < engineChannels.size(); i++) {
398                if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded
399                RenderActiveVoices(engineChannels[i], Samples);
400            }
401    
402          // render audio from all active voices          // now that all ordinary voices on ALL engine channels are rendered, render new stolen voices
403          int active_voices = 0;          RenderStolenVoices(Samples);
         uint* piKey = pActiveKeys->first();  
         while (piKey) { // iterate through all active keys  
             midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey];  
             pActiveKeys->set_current(piKey);  
             piKey = pActiveKeys->next();  
   
             Voice* pVoiceNext = pKey->pActiveVoices->first();  
             while (pVoiceNext) { // iterate through all voices on this key  
                 // already get next voice on key  
                 Voice* pVoice = pVoiceNext;  
                 pKey->pActiveVoices->set_current(pVoice);  
                 pVoiceNext = pKey->pActiveVoices->next();  
404    
405                  // now render current voice          // handle cleanup on all engine channels for the next audio fragment
406                  pVoice->Render(Samples);          for (int i = 0; i < engineChannels.size(); i++) {
407                  if (pVoice->IsActive()) active_voices++; // still active              if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded
408                  else { // voice reached end, is now inactive              PostProcess(engineChannels[i]);
                     KillVoice(pVoice); // remove voice from the list of active voices  
                 }  
             }  
             pKey->pEvents->clear(); // free all events on the key  
409          }          }
410    
411    
412          // write that to the disk thread class so that it can print it          // empty the engine's event list for the next audio fragment
413          // on the console for debugging purposes          ClearEventLists();
414          ActiveVoiceCount = active_voices;  
415            // reset voice stealing for the next audio fragment
416            pVoiceStealingQueue->clear();
417    
418            // just some statistics about this engine instance
419            ActiveVoiceCount = ActiveVoiceCountTemp;
420          if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount;          if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount;
421    
422            FrameTime += Samples;
423    
424          return 0;          return 0;
425      }      }
426    
427      /**      /**
428       *  Will be called by the MIDIIn Thread to let the audio thread trigger a new       * Dispatch and handle all events in this audio fragment for the given
429       *  voice for the given key.       * engine channel.
430       *       *
431       *  @param Key      - MIDI key number of the triggered key       * @param pEngineChannel - engine channel on which events should be
432       *  @param Velocity - MIDI velocity value of the triggered key       *                         processed
433         * @param Samples        - amount of sample points to be processed in
434         *                         this audio fragment cycle
435       */       */
436      void Engine::SendNoteOn(uint8_t Key, uint8_t Velocity) {      void Engine::ProcessEvents(EngineChannel* pEngineChannel, uint Samples) {
437          Event event    = pEventGenerator->CreateEvent();          // get all events from the engine channels's input event queue which belong to the current fragment
438          event.Type     = Event::type_note_on;          // (these are the common events like NoteOn, NoteOff, ControlChange, etc.)
439          event.Key      = Key;          pEngineChannel->ImportEvents(Samples);
440          event.Velocity = Velocity;  
441          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);          // process events
442          else dmsg(1,("Engine: Input event queue full!"));          {
443                RTList<Event>::Iterator itEvent = pEngineChannel->pEvents->first();
444                RTList<Event>::Iterator end     = pEngineChannel->pEvents->end();
445                for (; itEvent != end; ++itEvent) {
446                    switch (itEvent->Type) {
447                        case Event::type_note_on:
448                            dmsg(5,("Engine: Note on received\n"));
449                            ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent);
450                            break;
451                        case Event::type_note_off:
452                            dmsg(5,("Engine: Note off received\n"));
453                            ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent);
454                            break;
455                        case Event::type_control_change:
456                            dmsg(5,("Engine: MIDI CC received\n"));
457                            ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent);
458                            break;
459                        case Event::type_pitchbend:
460                            dmsg(5,("Engine: Pitchbend received\n"));
461                            ProcessPitchbend((EngineChannel*)itEvent->pEngineChannel, itEvent);
462                            break;
463                    }
464                }
465            }
466    
467            // reset voice stealing for the next engine channel (or next audio fragment)
468            itLastStolenVoice         = RTList<Voice>::Iterator();
469            itLastStolenVoiceGlobally = RTList<Voice>::Iterator();
470            iuiLastStolenKey          = RTList<uint>::Iterator();
471            iuiLastStolenKeyGlobally  = RTList<uint>::Iterator();
472            pLastStolenChannel        = NULL;
473      }      }
474    
475      /**      /**
476       *  Will be called by the MIDIIn Thread to signal the audio thread to release       * Render all 'normal' voices (that is voices which were not stolen in
477       *  voice(s) on the given key.       * this fragment) on the given engine channel.
478       *       *
479       *  @param Key      - MIDI key number of the released key       * @param pEngineChannel - engine channel on which audio should be
480       *  @param Velocity - MIDI release velocity value of the released key       *                         rendered
481         * @param Samples        - amount of sample points to be rendered in
482         *                         this audio fragment cycle
483       */       */
484      void Engine::SendNoteOff(uint8_t Key, uint8_t Velocity) {      void Engine::RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples) {
485          Event event    = pEventGenerator->CreateEvent();          RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
486          event.Type     = Event::type_note_off;          RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();
487          event.Key      = Key;          while (iuiKey != end) { // iterate through all active keys
488          event.Velocity = Velocity;              midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
489          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              ++iuiKey;
490          else dmsg(1,("Engine: Input event queue full!"));  
491                RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
492                RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
493                for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
494                    // now render current voice
495                    itVoice->Render(Samples);
496                    if (itVoice->IsActive()) ActiveVoiceCountTemp++; // still active
497                    else { // voice reached end, is now inactive
498                        FreeVoice(pEngineChannel, itVoice); // remove voice from the list of active voices
499                    }
500                }
501            }
502      }      }
503    
504      /**      /**
505       *  Will be called by the MIDIIn Thread to signal the audio thread to change       * Render all stolen voices (only voices which were stolen in this
506       *  the pitch value for all voices.       * fragment) on the given engine channel. Stolen voices are rendered
507         * after all normal voices have been rendered; this is needed to render
508         * audio of those voices which were selected for voice stealing until
509         * the point were the stealing (that is the take over of the voice)
510         * actually happened.
511       *       *
512       *  @param Pitch - MIDI pitch value (-8192 ... +8191)       * @param pEngineChannel - engine channel on which audio should be
513         *                         rendered
514         * @param Samples        - amount of sample points to be rendered in
515         *                         this audio fragment cycle
516       */       */
517      void Engine::SendPitchbend(int Pitch) {      void Engine::RenderStolenVoices(uint Samples) {
518          Event event = pEventGenerator->CreateEvent();          RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first();
519          event.Type  = Event::type_pitchbend;          RTList<Event>::Iterator end               = pVoiceStealingQueue->end();
520          event.Pitch = Pitch;          for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {
521          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              EngineChannel* pEngineChannel = (EngineChannel*) itVoiceStealEvent->pEngineChannel;
522          else dmsg(1,("Engine: Input event queue full!"));              Pool<Voice>::Iterator itNewVoice =
523                    LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false);
524                if (itNewVoice) {
525                    itNewVoice->Render(Samples);
526                    if (itNewVoice->IsActive()) ActiveVoiceCountTemp++; // still active
527                    else { // voice reached end, is now inactive
528                        FreeVoice(pEngineChannel, itNewVoice); // remove voice from the list of active voices
529                    }
530                }
531                else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n"));
532    
533                // we need to clear the key's event list explicitly here in case key was never active
534                midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoiceStealEvent->Param.Note.Key];
535                pKey->VoiceTheftsQueued--;
536                if (!pKey->Active && !pKey->VoiceTheftsQueued) pKey->pEvents->clear();
537            }
538      }      }
539    
540      /**      /**
541       *  Will be called by the MIDIIn Thread to signal the audio thread that a       * Free all keys which have turned inactive in this audio fragment, from
542       *  continuous controller value has changed.       * the list of active keys and clear all event lists on that engine
543         * channel.
544       *       *
545       *  @param Controller - MIDI controller number of the occured control change       * @param pEngineChannel - engine channel to cleanup
      *  @param Value      - value of the control change  
546       */       */
547      void Engine::SendControlChange(uint8_t Controller, uint8_t Value) {      void Engine::PostProcess(EngineChannel* pEngineChannel) {
548          Event event      = pEventGenerator->CreateEvent();          // free all keys which have no active voices left
549          event.Type       = Event::type_control_change;          {
550          event.Controller = Controller;              RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
551          event.Value      = Value;              RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();
552          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              while (iuiKey != end) { // iterate through all active keys
553                    midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
554                    ++iuiKey;
555                    if (pKey->pActiveVoices->isEmpty()) FreeKey(pEngineChannel, pKey);
556                    #if CONFIG_DEVMODE
557                    else { // just a sanity check for debugging
558                        RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
559                        RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
560                        for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
561                            if (itVoice->itKillEvent) {
562                                dmsg(1,("gig::Engine: ERROR, killed voice survived !!!\n"));
563                            }
564                        }
565                    }
566                    #endif // CONFIG_DEVMODE
567                }
568            }
569    
570            // empty the engine channel's own event lists
571            pEngineChannel->ClearEventLists();
572        }
573    
574        /**
575         *  Will be called by the MIDI input device whenever a MIDI system
576         *  exclusive message has arrived.
577         *
578         *  @param pData - pointer to sysex data
579         *  @param Size  - lenght of sysex data (in bytes)
580         */
581        void Engine::SendSysex(void* pData, uint Size) {
582            Event event             = pEventGenerator->CreateEvent();
583            event.Type              = Event::type_sysex;
584            event.Param.Sysex.Size  = Size;
585            event.pEngineChannel    = NULL; // as Engine global event
586            if (pEventQueue->write_space() > 0) {
587                if (pSysexBuffer->write_space() >= Size) {
588                    // copy sysex data to input buffer
589                    uint toWrite = Size;
590                    uint8_t* pPos = (uint8_t*) pData;
591                    while (toWrite) {
592                        const uint writeNow = RTMath::Min(toWrite, pSysexBuffer->write_space_to_end());
593                        pSysexBuffer->write(pPos, writeNow);
594                        toWrite -= writeNow;
595                        pPos    += writeNow;
596    
597                    }
598                    // finally place sysex event into input event queue
599                    pEventQueue->push(&event);
600                }
601                else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,CONFIG_SYSEX_BUFFER_SIZE));
602            }
603          else dmsg(1,("Engine: Input event queue full!"));          else dmsg(1,("Engine: Input event queue full!"));
604      }      }
605    
606      /**      /**
607       *  Assigns and triggers a new voice for the respective MIDI key.       *  Assigns and triggers a new voice for the respective MIDI key.
608       *       *
609       *  @param pNoteOnEvent - key, velocity and time stamp of the event       *  @param pEngineChannel - engine channel on which this event occured on
610         *  @param itNoteOnEvent - key, velocity and time stamp of the event
611       */       */
612      void Engine::ProcessNoteOn(Event* pNoteOnEvent) {      void Engine::ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
613          midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOnEvent->Key];  
614            const int key = itNoteOnEvent->Param.Note.Key;
615    
616            // Change key dimension value if key is in keyswitching area
617            {
618                const ::gig::Instrument* pInstrument = pEngineChannel->pInstrument;
619                if (key >= pInstrument->DimensionKeyRange.low && key <= pInstrument->DimensionKeyRange.high)
620                    pEngineChannel->CurrentKeyDimension = ((key - pInstrument->DimensionKeyRange.low) * 128) /
621                        (pInstrument->DimensionKeyRange.high - pInstrument->DimensionKeyRange.low + 1);
622            }
623    
624            midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[key];
625    
626          pKey->KeyPressed = true; // the MIDI key was now pressed down          pKey->KeyPressed = true; // the MIDI key was now pressed down
627            pKey->Velocity   = itNoteOnEvent->Param.Note.Velocity;
628            pKey->NoteOnTime = FrameTime + itNoteOnEvent->FragmentPos(); // will be used to calculate note length
629    
630          // cancel release process of voices on this key if needed          // cancel release process of voices on this key if needed
631          if (pKey->Active && !SustainPedal) {          if (pKey->Active && !pEngineChannel->SustainPedal) {
632              pNoteOnEvent->Type = Event::type_cancel_release; // transform event type              RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend();
633              pEvents->move(pNoteOnEvent, pKey->pEvents); // move event to the key's own event list              if (itCancelReleaseEvent) {
634                    *itCancelReleaseEvent = *itNoteOnEvent;                  // copy event
635                    itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type
636                }
637                else dmsg(1,("Event pool emtpy!\n"));
638          }          }
639    
640          // allocate a new voice for the key          // move note on event to the key's own event list
641          Voice* pNewVoice = pKey->pActiveVoices->alloc();          RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);
642          if (pNewVoice) {  
643              // launch the new voice          // allocate and trigger new voice(s) for the key
644              if (pNewVoice->Trigger(pNoteOnEvent, this->Pitch, this->pInstrument) < 0) {          {
645                  dmsg(1,("Triggering new voice failed!\n"));              // first, get total amount of required voices (dependant on amount of layers)
646                  pKey->pActiveVoices->free(pNewVoice);              ::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOnEventOnKeyList->Param.Note.Key);
647              }              if (pRegion) {
648              else if (!pKey->Active) { // mark as active key                  int voicesRequired = pRegion->Layers;
649                  pKey->Active = true;                  // now launch the required amount of voices
650                  pKey->pSelf  = pActiveKeys->alloc();                  for (int i = 0; i < voicesRequired; i++)
651                  *pKey->pSelf = pNoteOnEvent->Key;                      LaunchVoice(pEngineChannel, itNoteOnEventOnKeyList, i, false, true);
652              }              }
653          }          }
654          else std::cerr << "No free voice!" << std::endl << std::flush;  
655            // if neither a voice was spawned or postponed then remove note on event from key again
656            if (!pKey->Active && !pKey->VoiceTheftsQueued)
657                pKey->pEvents->free(itNoteOnEventOnKeyList);
658    
659            pKey->RoundRobinIndex++;
660      }      }
661    
662      /**      /**
# Line 538  namespace LinuxSampler { namespace gig { Line 665  namespace LinuxSampler { namespace gig {
665       *  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.
666       *  due to completion of sample playback).       *  due to completion of sample playback).
667       *       *
668       *  @param pNoteOffEvent - key, velocity and time stamp of the event       *  @param pEngineChannel - engine channel on which this event occured on
669         *  @param itNoteOffEvent - key, velocity and time stamp of the event
670       */       */
671      void Engine::ProcessNoteOff(Event* pNoteOffEvent) {      void Engine::ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) {
672          midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOffEvent->Key];          midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key];
673    
674          pKey->KeyPressed = false; // the MIDI key was now released          pKey->KeyPressed = false; // the MIDI key was now released
675    
676          // release voices on this key if needed          // release voices on this key if needed
677          if (pKey->Active && !SustainPedal) {          if (pKey->Active && !pEngineChannel->SustainPedal) {
678              pNoteOffEvent->Type = Event::type_release; // transform event type              itNoteOffEvent->Type = Event::type_release; // transform event type
679              pEvents->move(pNoteOffEvent, pKey->pEvents); // move event to the key's own event list  
680                // move event to the key's own event list
681                RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);
682    
683                // spawn release triggered voice(s) if needed
684                if (pKey->ReleaseTrigger) {
685                    // first, get total amount of required voices (dependant on amount of layers)
686                    ::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOffEventOnKeyList->Param.Note.Key);
687                    if (pRegion) {
688                        int voicesRequired = pRegion->Layers;
689    
690                        // MIDI note-on velocity is used instead of note-off velocity
691                        itNoteOffEventOnKeyList->Param.Note.Velocity = pKey->Velocity;
692    
693                        // now launch the required amount of voices
694                        for (int i = 0; i < voicesRequired; i++)
695                            LaunchVoice(pEngineChannel, itNoteOffEventOnKeyList, i, true, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples
696                    }
697                    pKey->ReleaseTrigger = false;
698                }
699    
700                // if neither a voice was spawned or postponed then remove note off event from key again
701                if (!pKey->Active && !pKey->VoiceTheftsQueued)
702                    pKey->pEvents->free(itNoteOffEventOnKeyList);
703          }          }
704      }      }
705    
# Line 556  namespace LinuxSampler { namespace gig { Line 707  namespace LinuxSampler { namespace gig {
707       *  Moves pitchbend event from the general (input) event list to the pitch       *  Moves pitchbend event from the general (input) event list to the pitch
708       *  event list.       *  event list.
709       *       *
710       *  @param pPitchbendEvent - absolute pitch value and time stamp of the event       *  @param pEngineChannel - engine channel on which this event occured on
711         *  @param itPitchbendEvent - absolute pitch value and time stamp of the event
712       */       */
713      void Engine::ProcessPitchbend(Event* pPitchbendEvent) {      void Engine::ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent) {
714          this->Pitch = pPitchbendEvent->Pitch; // store current pitch value          pEngineChannel->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value
715          pEvents->move(pPitchbendEvent, pSynthesisEvents[Event::destination_vco]);          itPitchbendEvent.moveToEndOf(pEngineChannel->pSynthesisEvents[Event::destination_vco]);
716      }      }
717    
718      /**      /**
719       *  Immediately kills the voice given with pVoice (no matter if sustain is       *  Allocates and triggers a new voice. This method will usually be
720       *  pressed or not) and removes it from the MIDI key's list of active voice.       *  called by the ProcessNoteOn() method and by the voices itself
721       *  This method will e.g. be called if a voice went inactive by itself.       *  (e.g. to spawn further voices on the same key for layered sounds).
722       *       *
723       *  @param pVoice - points to the voice to be killed       *  @param pEngineChannel      - engine channel on which this event occured on
724         *  @param itNoteOnEvent       - key, velocity and time stamp of the event
725         *  @param iLayer              - layer index for the new voice (optional - only
726         *                               in case of layered sounds of course)
727         *  @param ReleaseTriggerVoice - if new voice is a release triggered voice
728         *                               (optional, default = false)
729         *  @param VoiceStealing       - if voice stealing should be performed
730         *                               when there is no free voice
731         *                               (optional, default = true)
732         *  @returns pointer to new voice or NULL if there was no free voice or
733         *           if the voice wasn't triggered (for example when no region is
734         *           defined for the given key).
735       */       */
736      void Engine::KillVoice(Voice* pVoice) {      Pool<Voice>::Iterator Engine::LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing) {
737          if (pVoice) {          midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
             if (pVoice->IsActive()) pVoice->Kill();  
738    
739              midi_key_info_t* pKey = &pMIDIKeyInfo[pVoice->MIDIKey];          // allocate a new voice for the key
740            Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend();
741            if (itNewVoice) {
742                // launch the new voice
743                if (itNewVoice->Trigger(pEngineChannel, itNoteOnEvent, pEngineChannel->Pitch, pEngineChannel->pInstrument, iLayer, ReleaseTriggerVoice, VoiceStealing) < 0) {
744                    dmsg(4,("Voice not triggered\n"));
745                    pKey->pActiveVoices->free(itNewVoice);
746                }
747                else { // on success
748                    uint** ppKeyGroup = NULL;
749                    if (itNewVoice->KeyGroup) { // if this voice / key belongs to a key group
750                        ppKeyGroup = &pEngineChannel->ActiveKeyGroups[itNewVoice->KeyGroup];
751                        if (*ppKeyGroup) { // if there's already an active key in that key group
752                            midi_key_info_t* pOtherKey = &pEngineChannel->pMIDIKeyInfo[**ppKeyGroup];
753                            // kill all voices on the (other) key
754                            RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first();
755                            RTList<Voice>::Iterator end               = pOtherKey->pActiveVoices->end();
756                            for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
757                                if (itVoiceToBeKilled->Type != Voice::type_release_trigger) itVoiceToBeKilled->Kill(itNoteOnEvent);
758                            }
759                        }
760                    }
761                    if (!pKey->Active) { // mark as active key
762                        pKey->Active = true;
763                        pKey->itSelf = pEngineChannel->pActiveKeys->allocAppend();
764                        *pKey->itSelf = itNoteOnEvent->Param.Note.Key;
765                    }
766                    if (itNewVoice->KeyGroup) {
767                        *ppKeyGroup = &*pKey->itSelf; // put key as the (new) active key to its key group
768                    }
769                    if (itNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s)
770                    return itNewVoice; // success
771                }
772            }
773            else if (VoiceStealing) {
774                // try to steal one voice
775                int result = StealVoice(pEngineChannel, itNoteOnEvent);
776                if (!result) { // voice stolen successfully
777                    // put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died
778                    RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend();
779                    if (itStealEvent) {
780                        *itStealEvent = *itNoteOnEvent; // copy event
781                        itStealEvent->Param.Note.Layer = iLayer;
782                        itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice;
783                        pKey->VoiceTheftsQueued++;
784                    }
785                    else dmsg(1,("Voice stealing queue full!\n"));
786                }
787            }
788    
789            return Pool<Voice>::Iterator(); // no free voice or error
790        }
791    
792        /**
793         *  Will be called by LaunchVoice() method in case there are no free
794         *  voices left. This method will select and kill one old voice for
795         *  voice stealing and postpone the note-on event until the selected
796         *  voice actually died.
797         *
798         *  @param pEngineChannel - engine channel on which this event occured on
799         *  @param itNoteOnEvent - key, velocity and time stamp of the event
800         *  @returns 0 on success, a value < 0 if no active voice could be picked for voice stealing
801         */
802        int Engine::StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
803            if (!VoiceTheftsLeft) {
804                dmsg(1,("Max. voice thefts per audio fragment reached (you may raise CONFIG_MAX_VOICES).\n"));
805                return -1;
806            }
807            if (!pEventPool->poolIsEmpty()) {
808    
809                RTList<Voice>::Iterator itSelectedVoice;
810    
811                // Select one voice for voice stealing
812                switch (CONFIG_VOICE_STEAL_ALGO) {
813    
814                    // try to pick the oldest voice on the key where the new
815                    // voice should be spawned, if there is no voice on that
816                    // key, or no voice left to kill, then procceed with
817                    // 'oldestkey' algorithm
818                    case voice_steal_algo_oldestvoiceonkey: {
819                        midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
820                        itSelectedVoice = pSelectedKey->pActiveVoices->first();
821                        // proceed iterating if voice was created in this fragment cycle
822                        while (itSelectedVoice && !itSelectedVoice->hasRendered()) ++itSelectedVoice;
823                        // if we haven't found a voice then proceed with algorithm 'oldestkey'
824                        if (itSelectedVoice && itSelectedVoice->hasRendered()) break;
825                    } // no break - intentional !
826    
827                    // try to pick the oldest voice on the oldest active key
828                    // from the same engine channel
829                    // (caution: must stay after 'oldestvoiceonkey' algorithm !)
830                    case voice_steal_algo_oldestkey: {
831                        // if we already stole in this fragment, try to proceed on same key
832                        if (this->itLastStolenVoice) {
833                            itSelectedVoice = this->itLastStolenVoice;
834                            do {
835                                ++itSelectedVoice;
836                            } while (itSelectedVoice && !itSelectedVoice->hasRendered()); // proceed iterating if voice was created in this fragment cycle
837                            // found a "stealable" voice ?
838                            if (itSelectedVoice && itSelectedVoice->hasRendered()) {
839                                // remember which voice we stole, so we can simply proceed on next voice stealing
840                                this->itLastStolenVoice = itSelectedVoice;
841                                break; // selection succeeded
842                            }
843                        }
844                        // get (next) oldest key
845                        RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKey) ? ++this->iuiLastStolenKey : pEngineChannel->pActiveKeys->first();
846                        while (iuiSelectedKey) {
847                            midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey];
848                            itSelectedVoice = pSelectedKey->pActiveVoices->first();
849                            // proceed iterating if voice was created in this fragment cycle
850                            while (itSelectedVoice && !itSelectedVoice->hasRendered()) ++itSelectedVoice;
851                            // found a "stealable" voice ?
852                            if (itSelectedVoice && itSelectedVoice->hasRendered()) {
853                                // remember which voice on which key we stole, so we can simply proceed on next voice stealing
854                                this->iuiLastStolenKey  = iuiSelectedKey;
855                                this->itLastStolenVoice = itSelectedVoice;
856                                break; // selection succeeded
857                            }
858                            ++iuiSelectedKey; // get next oldest key
859                        }
860                        break;
861                    }
862    
863                    // don't steal anything
864                    case voice_steal_algo_none:
865                    default: {
866                        dmsg(1,("No free voice (voice stealing disabled)!\n"));
867                        return -1;
868                    }
869                }
870    
871                // if we couldn't steal a voice from the same engine channel then
872                // steal oldest voice on the oldest key from any other engine channel
873                // (the smaller engine channel number, the higher priority)
874                if (!itSelectedVoice || !itSelectedVoice->hasRendered()) {
875                    EngineChannel* pSelectedChannel;
876                    int            iChannelIndex;
877                    // select engine channel
878                    if (pLastStolenChannel) {
879                        pSelectedChannel = pLastStolenChannel;
880                        iChannelIndex    = pSelectedChannel->iEngineIndexSelf;
881                    } else { // pick the engine channel followed by this engine channel
882                        iChannelIndex    = (pEngineChannel->iEngineIndexSelf + 1) % engineChannels.size();
883                        pSelectedChannel = engineChannels[iChannelIndex];
884                    }
885                    // iterate through engine channels
886                    while (true) {
887                        // if we already stole in this fragment, try to proceed on same key
888                        if (this->itLastStolenVoiceGlobally) {
889                            itSelectedVoice = this->itLastStolenVoiceGlobally;
890                            do {
891                                ++itSelectedVoice;
892                            } while (itSelectedVoice && !itSelectedVoice->hasRendered()); // proceed iterating if voice was created in this fragment cycle
893                            // break if selection succeeded
894                            if (itSelectedVoice && itSelectedVoice->hasRendered()) {
895                                // remember which voice we stole, so we can simply proceed on next voice stealing
896                                this->itLastStolenVoiceGlobally = itSelectedVoice;
897                                break; // selection succeeded
898                            }
899                        }
900                        // get (next) oldest key
901                        RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKey) ? ++this->iuiLastStolenKey : pSelectedChannel->pActiveKeys->first();
902                        while (iuiSelectedKey) {
903                            midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey];
904                            itSelectedVoice = pSelectedKey->pActiveVoices->first();
905                            // proceed iterating if voice was created in this fragment cycle
906                            while (itSelectedVoice && !itSelectedVoice->hasRendered()) ++itSelectedVoice;
907                            // found a "stealable" voice ?
908                            if (itSelectedVoice && itSelectedVoice->hasRendered()) {
909                                // remember which voice on which key on which engine channel we stole, so we can simply proceed on next voice stealing
910                                this->iuiLastStolenKeyGlobally  = iuiSelectedKey;
911                                this->itLastStolenVoiceGlobally = itSelectedVoice;
912                                this->pLastStolenChannel        = pSelectedChannel;
913                                break; // selection succeeded
914                            }
915                            ++iuiSelectedKey; // get next key on current engine channel
916                        }
917                        // get next engine channel
918                        iChannelIndex    = (iChannelIndex + 1) % engineChannels.size();
919                        pSelectedChannel = engineChannels[iChannelIndex];
920                    }
921                }
922    
923                #if CONFIG_DEVMODE
924                if (!itSelectedVoice->IsActive()) {
925                    dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n"));
926                    return -1;
927                }
928                #endif // CONFIG_DEVMODE
929    
930                // now kill the selected voice
931                itSelectedVoice->Kill(itNoteOnEvent);
932    
933                --VoiceTheftsLeft;
934    
935                return 0; // success
936            }
937            else {
938                dmsg(1,("Event pool emtpy!\n"));
939                return -1;
940            }
941        }
942    
943        /**
944         *  Removes the given voice from the MIDI key's list of active voices.
945         *  This method will be called when a voice went inactive, e.g. because
946         *  it finished to playback its sample, finished its release stage or
947         *  just was killed.
948         *
949         *  @param pEngineChannel - engine channel on which this event occured on
950         *  @param itVoice - points to the voice to be freed
951         */
952        void Engine::FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice) {
953            if (itVoice) {
954                midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoice->MIDIKey];
955    
956                uint keygroup = itVoice->KeyGroup;
957    
958              // free the voice object              // free the voice object
959              pVoicePool->free(pVoice);              pVoicePool->free(itVoice);
960    
961              // 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
962              if (pKey->pActiveVoices->is_empty()) {              if (pKey->pActiveVoices->isEmpty() && keygroup) {
963                  pKey->Active = false;                  uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[keygroup];
964                  pActiveKeys->free(pKey->pSelf); // remove key from list of active keys                  if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group
                 pKey->pSelf = NULL;  
                 dmsg(3,("Key has no more voices now\n"));  
965              }              }
966          }          }
967          else std::cerr << "Couldn't release voice! (pVoice == NULL)\n" << std::flush;          else std::cerr << "Couldn't release voice! (!itVoice)\n" << std::flush;
968        }
969    
970        /**
971         *  Called when there's no more voice left on a key, this call will
972         *  update the key info respectively.
973         *
974         *  @param pEngineChannel - engine channel on which this event occured on
975         *  @param pKey - key which is now inactive
976         */
977        void Engine::FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey) {
978            if (pKey->pActiveVoices->isEmpty()) {
979                pKey->Active = false;
980                pEngineChannel->pActiveKeys->free(pKey->itSelf); // remove key from list of active keys
981                pKey->itSelf = RTList<uint>::Iterator();
982                pKey->ReleaseTrigger = false;
983                pKey->pEvents->clear();
984                dmsg(3,("Key has no more voices now\n"));
985            }
986            else dmsg(1,("gig::Engine: Oops, tried to free a key which contains voices.\n"));
987      }      }
988    
989      /**      /**
990       *  Reacts on supported control change commands (e.g. pitch bend wheel,       *  Reacts on supported control change commands (e.g. pitch bend wheel,
991       *  modulation wheel, aftertouch).       *  modulation wheel, aftertouch).
992       *       *
993       *  @param pControlChangeEvent - controller, value and time stamp of the event       *  @param pEngineChannel - engine channel on which this event occured on
994         *  @param itControlChangeEvent - controller, value and time stamp of the event
995       */       */
996      void Engine::ProcessControlChange(Event* pControlChangeEvent) {      void Engine::ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent) {
997          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));
998    
999            // update controller value in the engine channel's controller table
1000            pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;
1001    
1002            // move event from the unsorted event list to the control change event list
1003            Pool<Event>::Iterator itControlChangeEventOnCCList = itControlChangeEvent.moveToEndOf(pEngineChannel->pCCEvents);
1004    
1005          switch (pControlChangeEvent->Controller) {          switch (itControlChangeEventOnCCList->Param.CC.Controller) {
1006              case 64: {              case 7: { // volume
1007                  if (pControlChangeEvent->Value >= 64 && !SustainPedal) {                  //TODO: not sample accurate yet
1008                    pEngineChannel->GlobalVolume = (float) itControlChangeEventOnCCList->Param.CC.Value / 127.0f;
1009                    break;
1010                }
1011                case 10: { // panpot
1012                    //TODO: not sample accurate yet
1013                    const int pan = (int) itControlChangeEventOnCCList->Param.CC.Value - 64;
1014                    pEngineChannel->GlobalPanLeft  = 1.0f - float(RTMath::Max(pan, 0)) /  63.0f;
1015                    pEngineChannel->GlobalPanRight = 1.0f - float(RTMath::Min(pan, 0)) / -64.0f;
1016                    break;
1017                }
1018                case 64: { // sustain
1019                    if (itControlChangeEventOnCCList->Param.CC.Value >= 64 && !pEngineChannel->SustainPedal) {
1020                      dmsg(4,("PEDAL DOWN\n"));                      dmsg(4,("PEDAL DOWN\n"));
1021                      SustainPedal = true;                      pEngineChannel->SustainPedal = true;
1022    
1023                      // cancel release process of voices if necessary                      // cancel release process of voices if necessary
1024                      uint* piKey = pActiveKeys->first();                      RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
1025                      if (piKey) {                      for (; iuiKey; ++iuiKey) {
1026                          pControlChangeEvent->Type = Event::type_cancel_release; // transform event type                          midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
1027                          while (piKey) {                          if (!pKey->KeyPressed) {
1028                              midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey];                              RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();
1029                              pActiveKeys->set_current(piKey);                              if (itNewEvent) {
1030                              piKey = pActiveKeys->next();                                  *itNewEvent = *itControlChangeEventOnCCList; // copy event to the key's own event list
1031                              if (!pKey->KeyPressed) {                                  itNewEvent->Type = Event::type_cancel_release; // transform event type
                                 Event* pNewEvent = pKey->pEvents->alloc();  
                                 if (pNewEvent) *pNewEvent = *pControlChangeEvent; // copy event to the key's own event list  
                                 else dmsg(1,("Event pool emtpy!\n"));  
1032                              }                              }
1033                                else dmsg(1,("Event pool emtpy!\n"));
1034                          }                          }
1035                      }                      }
1036                  }                  }
1037                  if (pControlChangeEvent->Value < 64 && SustainPedal) {                  if (itControlChangeEventOnCCList->Param.CC.Value < 64 && pEngineChannel->SustainPedal) {
1038                      dmsg(4,("PEDAL UP\n"));                      dmsg(4,("PEDAL UP\n"));
1039                      SustainPedal = false;                      pEngineChannel->SustainPedal = false;
1040    
1041                      // release voices if their respective key is not pressed                      // release voices if their respective key is not pressed
1042                      uint* piKey = pActiveKeys->first();                      RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
1043                      if (piKey) {                      for (; iuiKey; ++iuiKey) {
1044                          pControlChangeEvent->Type = Event::type_release; // transform event type                          midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
1045                          while (piKey) {                          if (!pKey->KeyPressed) {
1046                              midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey];                              RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();
1047                              pActiveKeys->set_current(piKey);                              if (itNewEvent) {
1048                              piKey = pActiveKeys->next();                                  *itNewEvent = *itControlChangeEventOnCCList; // copy event to the key's own event list
1049                              if (!pKey->KeyPressed) {                                  itNewEvent->Type = Event::type_release; // transform event type
                                 Event* pNewEvent = pKey->pEvents->alloc();  
                                 if (pNewEvent) *pNewEvent = *pControlChangeEvent; // copy event to the key's own event list  
                                 else dmsg(1,("Event pool emtpy!\n"));  
1050                              }                              }
1051                                else dmsg(1,("Event pool emtpy!\n"));
1052                          }                          }
1053                      }                      }
1054                  }                  }
1055                  break;                  break;
1056              }              }
1057    
1058    
1059                // Channel Mode Messages
1060    
1061                case 120: { // all sound off
1062                    KillAllVoices(pEngineChannel, itControlChangeEventOnCCList);
1063                    break;
1064                }
1065                case 121: { // reset all controllers
1066                    pEngineChannel->ResetControllers();
1067                    break;
1068                }
1069                case 123: { // all notes off
1070                    ReleaseAllVoices(pEngineChannel, itControlChangeEventOnCCList);
1071                    break;
1072                }
1073          }          }
1074        }
1075    
1076          // update controller value in the engine's controller table      /**
1077          ControllerTable[pControlChangeEvent->Controller] = pControlChangeEvent->Value;       *  Reacts on MIDI system exclusive messages.
1078         *
1079         *  @param itSysexEvent - sysex data size and time stamp of the sysex event
1080         */
1081        void Engine::ProcessSysex(Pool<Event>::Iterator& itSysexEvent) {
1082            RingBuffer<uint8_t>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader();
1083    
1084          // move event from the unsorted event list to the control change event list          uint8_t exclusive_status, id;
1085          pEvents->move(pControlChangeEvent, pCCEvents);          if (!reader.pop(&exclusive_status)) goto free_sysex_data;
1086            if (!reader.pop(&id))               goto free_sysex_data;
1087            if (exclusive_status != 0xF0)       goto free_sysex_data;
1088    
1089            switch (id) {
1090                case 0x41: { // Roland
1091                    dmsg(3,("Roland Sysex\n"));
1092                    uint8_t device_id, model_id, cmd_id;
1093                    if (!reader.pop(&device_id)) goto free_sysex_data;
1094                    if (!reader.pop(&model_id))  goto free_sysex_data;
1095                    if (!reader.pop(&cmd_id))    goto free_sysex_data;
1096                    if (model_id != 0x42 /*GS*/) goto free_sysex_data;
1097                    if (cmd_id != 0x12 /*DT1*/)  goto free_sysex_data;
1098    
1099                    // command address
1100                    uint8_t addr[3]; // 2 byte addr MSB, followed by 1 byte addr LSB)
1101                    const RingBuffer<uint8_t>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later
1102                    if (reader.read(&addr[0], 3) != 3) goto free_sysex_data;
1103                    if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters
1104                        dmsg(3,("\tSystem Parameter\n"));
1105                    }
1106                    else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters
1107                        dmsg(3,("\tCommon Parameter\n"));
1108                    }
1109                    else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1)
1110                        dmsg(3,("\tPart Parameter\n"));
1111                        switch (addr[2]) {
1112                            case 0x40: { // scale tuning
1113                                dmsg(3,("\t\tScale Tuning\n"));
1114                                uint8_t scale_tunes[12]; // detuning of all 12 semitones of an octave
1115                                if (reader.read(&scale_tunes[0], 12) != 12) goto free_sysex_data;
1116                                uint8_t checksum;
1117                                if (!reader.pop(&checksum)) goto free_sysex_data;
1118                                #if CONFIG_ASSERT_GS_SYSEX_CHECKSUM
1119                                if (GSCheckSum(checksum_reader, 12)) goto free_sysex_data;
1120                                #endif // CONFIG_ASSERT_GS_SYSEX_CHECKSUM
1121                                for (int i = 0; i < 12; i++) scale_tunes[i] -= 64;
1122                                AdjustScale((int8_t*) scale_tunes);
1123                                dmsg(3,("\t\t\tNew scale applied.\n"));
1124                                break;
1125                            }
1126                        }
1127                    }
1128                    else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2)
1129                    }
1130                    else if (addr[0] == 0x41) { // Drum Setup Parameters
1131                    }
1132                    break;
1133                }
1134            }
1135    
1136            free_sysex_data: // finally free sysex data
1137            pSysexBuffer->increment_read_ptr(itSysexEvent->Param.Sysex.Size);
1138        }
1139    
1140        /**
1141         * Calculates the Roland GS sysex check sum.
1142         *
1143         * @param AddrReader - reader which currently points to the first GS
1144         *                     command address byte of the GS sysex message in
1145         *                     question
1146         * @param DataSize   - size of the GS message data (in bytes)
1147         */
1148        uint8_t Engine::GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize) {
1149            RingBuffer<uint8_t>::NonVolatileReader reader = AddrReader;
1150            uint bytes = 3 /*addr*/ + DataSize;
1151            uint8_t addr_and_data[bytes];
1152            reader.read(&addr_and_data[0], bytes);
1153            uint8_t sum = 0;
1154            for (uint i = 0; i < bytes; i++) sum += addr_and_data[i];
1155            return 128 - sum % 128;
1156        }
1157    
1158        /**
1159         * Allows to tune each of the twelve semitones of an octave.
1160         *
1161         * @param ScaleTunes - detuning of all twelve semitones (in cents)
1162         */
1163        void Engine::AdjustScale(int8_t ScaleTunes[12]) {
1164            memcpy(&this->ScaleTuning[0], &ScaleTunes[0], 12); //TODO: currently not sample accurate
1165        }
1166    
1167        /**
1168         * Releases all voices on an engine channel. All voices will go into
1169         * the release stage and thus it might take some time (e.g. dependant to
1170         * their envelope release time) until they actually die.
1171         *
1172         * @param pEngineChannel - engine channel on which all voices should be released
1173         * @param itReleaseEvent - event which caused this releasing of all voices
1174         */
1175        void Engine::ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent) {
1176            RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
1177            while (iuiKey) {
1178                midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
1179                ++iuiKey;
1180                // append a 'release' event to the key's own event list
1181                RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();
1182                if (itNewEvent) {
1183                    *itNewEvent = *itReleaseEvent; // copy original event (to the key's event list)
1184                    itNewEvent->Type = Event::type_release; // transform event type
1185                }
1186                else dmsg(1,("Event pool emtpy!\n"));
1187            }
1188        }
1189    
1190        /**
1191         * Kills all voices on an engine channel as soon as possible. Voices
1192         * won't get into release state, their volume level will be ramped down
1193         * as fast as possible.
1194         *
1195         * @param pEngineChannel - engine channel on which all voices should be killed
1196         * @param itKillEvent    - event which caused this killing of all voices
1197         */
1198        void Engine::KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent) {
1199            RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
1200            RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();
1201            while (iuiKey != end) { // iterate through all active keys
1202                midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
1203                ++iuiKey;
1204                RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
1205                RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
1206                for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
1207                    itVoice->Kill(itKillEvent);
1208                }
1209            }
1210      }      }
1211    
1212      /**      /**
# Line 667  namespace LinuxSampler { namespace gig { Line 1224  namespace LinuxSampler { namespace gig {
1224          }          }
1225      }      }
1226    
     float Engine::Volume() {  
         return GlobalVolume;  
     }  
   
     void Engine::Volume(float f) {  
         GlobalVolume = f;  
     }  
   
1227      uint Engine::VoiceCount() {      uint Engine::VoiceCount() {
1228          return ActiveVoiceCount;          return ActiveVoiceCount;
1229      }      }
# Line 704  namespace LinuxSampler { namespace gig { Line 1253  namespace LinuxSampler { namespace gig {
1253      }      }
1254    
1255      String Engine::EngineName() {      String Engine::EngineName() {
1256          return "GigEngine";          return LS_GIG_ENGINE_NAME;
     }  
   
     String Engine::InstrumentFileName() {  
         return InstrumentFile;  
     }  
   
     int Engine::InstrumentIndex() {  
         return InstrumentIdx;  
     }  
   
     int Engine::InstrumentStatus() {  
         return InstrumentStat;  
1257      }      }
1258    
1259      String Engine::Description() {      String Engine::Description() {
# Line 724  namespace LinuxSampler { namespace gig { Line 1261  namespace LinuxSampler { namespace gig {
1261      }      }
1262    
1263      String Engine::Version() {      String Engine::Version() {
1264          String s = "$Revision: 1.7 $";          String s = "$Revision: 1.42 $";
1265          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
1266      }      }
1267    

Legend:
Removed from v.133  
changed lines
  Added in v.659

  ViewVC Help
Powered by ViewVC