/[svn]/linuxsampler/trunk/src/engines/gig/Engine.cpp
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Diff of /linuxsampler/trunk/src/engines/gig/Engine.cpp

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revision 1043 by schoenebeck, Wed Feb 7 21:02:04 2007 UTC revision 1895 by persson, Sun May 3 12:15:40 2009 UTC
# Line 2  Line 2 
2   *                                                                         *   *                                                                         *
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck    *
6   *   Copyright (C) 2005-2007 Christian Schoenebeck                        *   *   Copyright (C) 2005-2009 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 29  Line 29 
29    
30  #include "Engine.h"  #include "Engine.h"
31    
32    #include "../../common/global_private.h"
33    
34  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
35    
36      InstrumentResourceManager Engine::instruments;      InstrumentResourceManager Engine::instruments;
# Line 72  namespace LinuxSampler { namespace gig { Line 74  namespace LinuxSampler { namespace gig {
74    
75      /**      /**
76       * Once an engine channel is disconnected from an audio output device,       * Once an engine channel is disconnected from an audio output device,
77       * it wil immediately call this method to unregister itself from the       * it will immediately call this method to unregister itself from the
78       * engine instance and if that engine instance is not used by any other       * engine instance and if that engine instance is not used by any other
79       * engine channel anymore, then that engine instance will be destroyed.       * engine channel anymore, then that engine instance will be destroyed.
80       *       *
# Line 98  namespace LinuxSampler { namespace gig { Line 100  namespace LinuxSampler { namespace gig {
100      /**      /**
101       * Constructor       * Constructor
102       */       */
103      Engine::Engine() {      Engine::Engine() : SuspendedRegions(128) {
104          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
105          pDiskThread        = NULL;          pDiskThread        = NULL;
106          pEventGenerator    = NULL;          pEventGenerator    = NULL;
107          pSysexBuffer       = new RingBuffer<uint8_t,false>(CONFIG_SYSEX_BUFFER_SIZE, 0);          pSysexBuffer       = new RingBuffer<uint8_t,false>(CONFIG_SYSEX_BUFFER_SIZE, 0);
108          pEventQueue        = new RingBuffer<Event,false>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);          pEventQueue        = new RingBuffer<Event,false>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);
109          pEventPool         = new Pool<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT);          pEventPool         = new Pool<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT);
110          pVoicePool         = new Pool<Voice>(CONFIG_MAX_VOICES);          pVoicePool         = new Pool<Voice>(GLOBAL_MAX_VOICES);
111          pDimRegionsInUse   = new ::gig::DimensionRegion*[CONFIG_MAX_VOICES + 1];          pDimRegionPool[0]  = new Pool< ::gig::DimensionRegion*>(GLOBAL_MAX_VOICES);
112            pDimRegionPool[1]  = new Pool< ::gig::DimensionRegion*>(GLOBAL_MAX_VOICES);
113          pVoiceStealingQueue = new RTList<Event>(pEventPool);          pVoiceStealingQueue = new RTList<Event>(pEventPool);
114          pGlobalEvents      = new RTList<Event>(pEventPool);          pGlobalEvents      = new RTList<Event>(pEventPool);
115          InstrumentChangeQueue      = new RingBuffer<instrument_change_command_t,false>(1, 0);          iMaxDiskStreams    = GLOBAL_MAX_STREAMS;
116          InstrumentChangeReplyQueue = new RingBuffer<instrument_change_reply_t,false>(1, 0);          FrameTime          = 0;
117    
118          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
119              iterVoice->SetEngine(this);              iterVoice->SetEngine(this);
# Line 119  namespace LinuxSampler { namespace gig { Line 122  namespace LinuxSampler { namespace gig {
122    
123          ResetInternal();          ResetInternal();
124          ResetScaleTuning();          ResetScaleTuning();
125            ResetSuspendedRegions();
126      }      }
127    
128      /**      /**
# Line 141  namespace LinuxSampler { namespace gig { Line 145  namespace LinuxSampler { namespace gig {
145          if (pEventGenerator) delete pEventGenerator;          if (pEventGenerator) delete pEventGenerator;
146          if (pVoiceStealingQueue) delete pVoiceStealingQueue;          if (pVoiceStealingQueue) delete pVoiceStealingQueue;
147          if (pSysexBuffer) delete pSysexBuffer;          if (pSysexBuffer) delete pSysexBuffer;
148            if (pGlobalEvents) delete pGlobalEvents;
149            if (pDimRegionPool[0]) delete pDimRegionPool[0];
150            if (pDimRegionPool[1]) delete pDimRegionPool[1];
151            ResetSuspendedRegions();
152          Unregister();          Unregister();
153      }      }
154    
# Line 150  namespace LinuxSampler { namespace gig { Line 158  namespace LinuxSampler { namespace gig {
158          dmsg(3,("gig::Engine: enabled (val=%d)\n", EngineDisabled.GetUnsafe()));          dmsg(3,("gig::Engine: enabled (val=%d)\n", EngineDisabled.GetUnsafe()));
159      }      }
160    
161        /**
162         * Temporarily stop the engine to not do anything. The engine will just be
163         * frozen during that time, that means after enabling it again it will
164         * continue where it was, with all its voices and playback state it had at
165         * the point of disabling. Notice that the engine's (audio) thread will
166         * continue to run, it just remains in an inactive loop during that time.
167         *
168         * If you need to be sure that all voices and disk streams are killed as
169         * well, use @c SuspendAll() instead.
170         *
171         * @see Enable(), SuspendAll()
172         */
173      void Engine::Disable() {      void Engine::Disable() {
174          dmsg(3,("gig::Engine: disabling\n"));          dmsg(3,("gig::Engine: disabling\n"));
175          bool* pWasDisabled = EngineDisabled.PushAndUnlock(true, 2); // wait max. 2s          bool* pWasDisabled = EngineDisabled.PushAndUnlock(true, 2); // wait max. 2s
# Line 163  namespace LinuxSampler { namespace gig { Line 183  namespace LinuxSampler { namespace gig {
183      }      }
184    
185      /**      /**
186         * Similar to @c Disable() but this method additionally kills all voices
187         * and disk streams and blocks until all voices and disk streams are actually
188         * killed / deleted.
189         *
190         * @e Note: only the original calling thread is able to re-enable the
191         * engine afterwards by calling @c ResumeAll() later on!
192         */
193        void Engine::SuspendAll() {
194            dmsg(2,("gig::Engine: Suspending all ...\n"));
195            // stop the engine, so we can safely modify the engine's
196            // data structures from this foreign thread
197            DisableAndLock();
198            // we could also use the respective class member variable here,
199            // but this is probably safer and cleaner
200            int iPendingStreamDeletions = 0;
201            // kill all voices on all engine channels the *die hard* way
202            for (int iChannel = 0; iChannel < engineChannels.size(); iChannel++) {
203                EngineChannel* pEngineChannel = engineChannels[iChannel];
204                RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
205                RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();
206                for (; iuiKey != end; ++iuiKey) { // iterate through all active keys
207                    midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
208                    RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first();
209                    RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
210                    for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
211                        // request a notification from disk thread side for stream deletion
212                        const Stream::Handle hStream = itVoice->KillImmediately(true);
213                        if (hStream != Stream::INVALID_HANDLE) { // voice actually used a stream
214                            iPendingStreamDeletions++;
215                        }
216                        // free the voice to the voice pool and update key info
217                        FreeVoice(pEngineChannel, itVoice);
218                    }
219                }
220            }
221            // wait until all streams were actually deleted by the disk thread
222            while (iPendingStreamDeletions) {
223                while (
224                    iPendingStreamDeletions &&
225                    pDiskThread->AskForDeletedStream() != Stream::INVALID_HANDLE
226                ) iPendingStreamDeletions--;
227                if (!iPendingStreamDeletions) break;
228                usleep(10000); // sleep for 10ms
229            }
230            dmsg(2,("gig::Engine: Everything suspended.\n"));
231        }
232    
233        /**
234         * At the moment same as calling @c Enable() directly, but this might
235         * change in future, so better call this method as counterpart to
236         * @c SuspendAll() instead of @c Enable() !
237         */
238        void Engine::ResumeAll() {
239            Enable();
240        }
241    
242        /**
243         * Order the engine to stop rendering audio for the given region.
244         * Additionally this method will block until all voices and their disk
245         * streams associated with that region are actually killed / deleted, so
246         * one can i.e. safely modify the region with an instrument editor after
247         * returning from this method.
248         *
249         * @param pRegion - region the engine shall stop using
250         */
251        void Engine::Suspend(::gig::Region* pRegion) {
252            dmsg(2,("gig::Engine: Suspending Region %x ...\n",pRegion));
253            SuspendedRegionsMutex.Lock();
254            SuspensionChangeOngoing.Set(true);
255            pPendingRegionSuspension = pRegion;
256            SuspensionChangeOngoing.WaitAndUnlockIf(true);
257            SuspendedRegionsMutex.Unlock();
258            dmsg(2,("gig::Engine: Region %x suspended.",pRegion));
259        }
260    
261        /**
262         * Orders the engine to resume playing back the given region, previously
263         * suspended with @c Suspend() .
264         *
265         * @param pRegion - region the engine shall be allowed to use again
266         */
267        void Engine::Resume(::gig::Region* pRegion) {
268            dmsg(2,("gig::Engine: Resuming Region %x ...\n",pRegion));
269            SuspendedRegionsMutex.Lock();
270            SuspensionChangeOngoing.Set(true);
271            pPendingRegionResumption = pRegion;
272            SuspensionChangeOngoing.WaitAndUnlockIf(true);
273            SuspendedRegionsMutex.Unlock();
274            dmsg(2,("gig::Engine: Region %x resumed.\n",pRegion));
275        }
276    
277        /**
278       *  Reset all voices and disk thread and clear input event queue and all       *  Reset all voices and disk thread and clear input event queue and all
279       *  control and status variables.       *  control and status variables.
280       */       */
# Line 183  namespace LinuxSampler { namespace gig { Line 295  namespace LinuxSampler { namespace gig {
295          // make sure that the engine does not get any sysex messages          // make sure that the engine does not get any sysex messages
296          // while it's reseting          // while it's reseting
297          bool sysexDisabled = MidiInputPort::RemoveSysexListener(this);          bool sysexDisabled = MidiInputPort::RemoveSysexListener(this);
298          ActiveVoiceCount    = 0;          SetVoiceCount(0);
299          ActiveVoiceCountMax = 0;          ActiveVoiceCountMax = 0;
300    
301          // reset voice stealing parameters          // reset voice stealing parameters
# Line 217  namespace LinuxSampler { namespace gig { Line 329  namespace LinuxSampler { namespace gig {
329          memset(&ScaleTuning[0], 0x00, 12);          memset(&ScaleTuning[0], 0x00, 12);
330      }      }
331    
332        void Engine::ResetSuspendedRegions() {
333            SuspendedRegions.clear();
334            iPendingStreamDeletions = 0;
335            pPendingRegionSuspension = pPendingRegionResumption = NULL;
336            SuspensionChangeOngoing.Set(false);
337        }
338    
339      /**      /**
340       * Connect this engine instance with the given audio output device.       * Connect this engine instance with the given audio output device.
341       * This method will be called when an Engine instance is created.       * This method will be called when an Engine instance is created.
# Line 227  namespace LinuxSampler { namespace gig { Line 346  namespace LinuxSampler { namespace gig {
346       * @param pAudioOut - audio output device to connect to       * @param pAudioOut - audio output device to connect to
347       */       */
348      void Engine::Connect(AudioOutputDevice* pAudioOut) {      void Engine::Connect(AudioOutputDevice* pAudioOut) {
349            // caution: don't ignore if connecting to the same device here,
350            // because otherwise SetMaxDiskStreams() implementation won't work anymore!
351    
352          pAudioOutputDevice = pAudioOut;          pAudioOutputDevice = pAudioOut;
353    
354          ResetInternal();          ResetInternal();
# Line 243  namespace LinuxSampler { namespace gig { Line 365  namespace LinuxSampler { namespace gig {
365          this->MaxSamplesPerCycle = pAudioOutputDevice->MaxSamplesPerCycle();          this->MaxSamplesPerCycle = pAudioOutputDevice->MaxSamplesPerCycle();
366          this->SampleRate         = pAudioOutputDevice->SampleRate();          this->SampleRate         = pAudioOutputDevice->SampleRate();
367    
368          // FIXME: audio drivers with varying fragment sizes might be a problem here          MinFadeOutSamples = int(double(SampleRate) * CONFIG_EG_MIN_RELEASE_TIME) - 1;
369          MaxFadeOutPos = MaxSamplesPerCycle - int(double(SampleRate) * CONFIG_EG_MIN_RELEASE_TIME) - 1;          if (MaxSamplesPerCycle < MinFadeOutSamples) {
         if (MaxFadeOutPos < 0) {  
370              std::cerr << "gig::Engine: WARNING, CONFIG_EG_MIN_RELEASE_TIME "              std::cerr << "gig::Engine: WARNING, CONFIG_EG_MIN_RELEASE_TIME "
371                        << "too big for current audio fragment size & sampling rate! "                        << "too big for current audio fragment size & sampling rate! "
372                        << "May lead to click sounds if voice stealing chimes in!\n" << std::flush;                        << "May lead to click sounds if voice stealing chimes in!\n" << std::flush;
373              // force volume ramp downs at the beginning of each fragment              // force volume ramp downs at the beginning of each fragment
374              MaxFadeOutPos = 0;              MinFadeOutSamples = MaxSamplesPerCycle;
375              // lower minimum release time              // lower minimum release time
376              const float minReleaseTime = (float) MaxSamplesPerCycle / (float) SampleRate;              const float minReleaseTime = (float) MaxSamplesPerCycle / (float) SampleRate;
377              for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {              for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
# Line 266  namespace LinuxSampler { namespace gig { Line 387  namespace LinuxSampler { namespace gig {
387              delete this->pDiskThread;              delete this->pDiskThread;
388              dmsg(1,("OK\n"));              dmsg(1,("OK\n"));
389          }          }
390          this->pDiskThread = new DiskThread(((pAudioOut->MaxSamplesPerCycle() << CONFIG_MAX_PITCH) << 1) + 6, //FIXME: assuming stereo          this->pDiskThread =
391                                             &instruments);              new DiskThread(
392                    iMaxDiskStreams,
393                    ((pAudioOut->MaxSamplesPerCycle() << CONFIG_MAX_PITCH) << 1) + 6, //FIXME: assuming stereo
394                    &instruments
395                );
396    
397          if (!pDiskThread) {          if (!pDiskThread) {
398              dmsg(0,("gig::Engine  new diskthread = NULL\n"));              dmsg(0,("gig::Engine  new diskthread = NULL\n"));
399              exit(EXIT_FAILURE);              exit(EXIT_FAILURE);
# Line 293  namespace LinuxSampler { namespace gig { Line 419  namespace LinuxSampler { namespace gig {
419                  exit(EXIT_FAILURE);                  exit(EXIT_FAILURE);
420              }              }
421          }          }
422            pVoicePool->clear();
423        }
424    
425        /**
426         * Called by the engine's (audio) thread once per cycle to process requests
427         * from the outer world to suspend or resume a given @c gig::Region .
428         */
429        void Engine::ProcessSuspensionsChanges() {
430            // process request for suspending one region
431            if (pPendingRegionSuspension) {
432                // kill all voices on all engine channels that use this region
433                for (int iChannel = 0; iChannel < engineChannels.size(); iChannel++) {
434                    EngineChannel* pEngineChannel = engineChannels[iChannel];
435                    RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
436                    RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();
437                    for (; iuiKey != end; ++iuiKey) { // iterate through all active keys
438                        midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
439                        RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first();
440                        // if current key is not associated with this region, skip this key
441                        if (itVoice->pDimRgn->GetParent() != pPendingRegionSuspension) continue;
442                        RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
443                        for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
444                            // request a notification from disk thread side for stream deletion
445                            const Stream::Handle hStream = itVoice->KillImmediately(true);
446                            if (hStream != Stream::INVALID_HANDLE) { // voice actually used a stream
447                                iPendingStreamDeletions++;
448                            }
449                            //NOTE: maybe we should call FreeVoice() here, shouldn't cause a harm though I think, since the voices should be freed by RenderActiveVoices() in the render loop, they are probably just freed a bit later than they could/should be
450                        }
451                    }
452                }
453                // make sure the region is not yet on the list
454                bool bAlreadySuspended = false;
455                RTList< ::gig::Region*>::Iterator iter = SuspendedRegions.first();
456                RTList< ::gig::Region*>::Iterator end  = SuspendedRegions.end();
457                for (; iter != end; ++iter) { // iterate through all suspended regions
458                    if (*iter == pPendingRegionSuspension) { // found
459                        bAlreadySuspended = true;
460                        dmsg(1,("gig::Engine: attempt to suspend an already suspended region !!!\n"));
461                        break;
462                    }
463                }
464                if (!bAlreadySuspended) {
465                    // put the region on the list of suspended regions
466                    RTList< ::gig::Region*>::Iterator iter = SuspendedRegions.allocAppend();
467                    if (iter) {
468                        *iter = pPendingRegionSuspension;
469                    } else std::cerr << "gig::Engine: Could not suspend Region, list is full. This is a bug!!!\n" << std::flush;
470                }
471                // free request slot for next caller (and to make sure that
472                // we're not going to process the same request in the next cycle)
473                pPendingRegionSuspension = NULL;
474                // if no disk stream deletions are pending, awaken other side, as
475                // we're done in this case
476                if (!iPendingStreamDeletions) SuspensionChangeOngoing.Set(false);
477            }
478    
479            // process request for resuming one region
480            if (pPendingRegionResumption) {
481                // remove region from the list of suspended regions
482                RTList< ::gig::Region*>::Iterator iter = SuspendedRegions.first();
483                RTList< ::gig::Region*>::Iterator end  = SuspendedRegions.end();
484                for (; iter != end; ++iter) { // iterate through all suspended regions
485                    if (*iter == pPendingRegionResumption) { // found
486                        SuspendedRegions.free(iter);
487                        break; // done
488                    }
489                }
490                // free request slot for next caller
491                pPendingRegionResumption = NULL;
492                // awake other side as we're done
493                SuspensionChangeOngoing.Set(false);
494            }
495        }
496    
497        /**
498         * Called by the engine's (audio) thread once per cycle to check if
499         * streams of voices that were killed due to suspension request have
500         * finally really been deleted by the disk thread.
501         */
502        void Engine::ProcessPendingStreamDeletions() {
503            if (!iPendingStreamDeletions) return;
504            //TODO: or shall we better store a list with stream handles instead of a scalar amount of streams to be deleted? might be safer
505            while (
506                iPendingStreamDeletions &&
507                pDiskThread->AskForDeletedStream() != Stream::INVALID_HANDLE
508            ) iPendingStreamDeletions--;
509            // just for safety ...
510            while (pDiskThread->AskForDeletedStream() != Stream::INVALID_HANDLE);
511            // now that all disk streams are deleted, awake other side as
512            // we're finally done with suspending the requested region
513            if (!iPendingStreamDeletions) SuspensionChangeOngoing.Set(false);
514        }
515    
516        /**
517         * Returns @c true if the given region is currently set to be suspended
518         * from being used, @c false otherwise.
519         */
520        bool Engine::RegionSuspended(::gig::Region* pRegion) {
521            if (SuspendedRegions.isEmpty()) return false;
522            //TODO: or shall we use a sorted container instead of the RTList? might be faster ... or trivial ;-)
523            RTList< ::gig::Region*>::Iterator iter = SuspendedRegions.first();
524            RTList< ::gig::Region*>::Iterator end  = SuspendedRegions.end();
525            for (; iter != end; ++iter)  // iterate through all suspended regions
526                if (*iter == pRegion) return true;
527            return false;
528      }      }
529    
530      /**      /**
# Line 350  namespace LinuxSampler { namespace gig { Line 582  namespace LinuxSampler { namespace gig {
582       *  @returns       0 on success       *  @returns       0 on success
583       */       */
584      int Engine::RenderAudio(uint Samples) {      int Engine::RenderAudio(uint Samples) {
585          dmsg(7,("RenderAudio(Samples=%d)\n", Samples));          dmsg(8,("RenderAudio(Samples=%d)\n", Samples));
586    
587          // return if engine disabled          // return if engine disabled
588          if (EngineDisabled.Pop()) {          if (EngineDisabled.Pop()) {
589              dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe()));              dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe()));
590                EngineDisabled.RttDone();
591              return 0;              return 0;
592          }          }
593    
594            // process requests for suspending / resuming regions (i.e. to avoid
595            // crashes while these regions are modified by an instrument editor)
596            ProcessSuspensionsChanges();
597    
598          // update time of start and end of this audio fragment (as events' time stamps relate to this)          // update time of start and end of this audio fragment (as events' time stamps relate to this)
599          pEventGenerator->UpdateFragmentTime(Samples);          pEventGenerator->UpdateFragmentTime(Samples);
600    
601          // We only allow a maximum of CONFIG_MAX_VOICES voices to be spawned          // We only allow the given maximum number of voices to be spawned
602          // in each audio fragment. All subsequent request for spawning new          // in each audio fragment. All subsequent request for spawning new
603          // voices in the same audio fragment will be ignored.          // voices in the same audio fragment will be ignored.
604          VoiceSpawnsLeft = CONFIG_MAX_VOICES;          VoiceSpawnsLeft = MaxVoices();
605    
606          // get all events from the engine's global input event queue which belong to the current fragment          // get all events from the engine's global input event queue which belong to the current fragment
607          // (these are usually just SysEx messages)          // (these are usually just SysEx messages)
# Line 388  namespace LinuxSampler { namespace gig { Line 625  namespace LinuxSampler { namespace gig {
625          ActiveVoiceCountTemp = 0;          ActiveVoiceCountTemp = 0;
626    
627          // handle instrument change commands          // handle instrument change commands
628          instrument_change_command_t command;          bool instrumentChanged = false;
629          if (InstrumentChangeQueue->pop(&command) > 0) {          for (int i = 0; i < engineChannels.size(); i++) {
630              EngineChannel* pEngineChannel = command.pEngineChannel;              EngineChannel* pEngineChannel = engineChannels[i];
             pEngineChannel->pInstrument = command.pInstrument;  
   
             // iterate through all active voices and mark their  
             // dimension regions as "in use". The instrument resource  
             // manager may delete all of the instrument except the  
             // dimension regions and samples that are in use.  
             int i = 0;  
             RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();  
             RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();  
             while (iuiKey != end) { // iterate through all active keys  
                 midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];  
                 ++iuiKey;  
631    
632                  RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();              // as we're going to (carefully) write some status to the
633                  RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();              // synchronized struct, we cast away the const
634                  for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key              EngineChannel::instrument_change_command_t& cmd =
635                      if (!itVoice->Orphan) {                  const_cast<EngineChannel::instrument_change_command_t&>(pEngineChannel->InstrumentChangeCommandReader.Lock());
636    
637                pEngineChannel->pDimRegionsInUse = cmd.pDimRegionsInUse;
638                pEngineChannel->pDimRegionsInUse->clear();
639    
640                if (cmd.bChangeInstrument) {
641                    // change instrument
642                    dmsg(5,("Engine: instrument change command received\n"));
643                    cmd.bChangeInstrument = false;
644                    pEngineChannel->pInstrument = cmd.pInstrument;
645                    instrumentChanged = true;
646    
647                    // Iterate through all active voices and mark them as
648                    // "orphans", which means that the dimension regions
649                    // and samples they use should be released to the
650                    // instrument resource manager when the voices die.
651                    int i = 0;
652                    RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
653                    RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();
654                    while (iuiKey != end) { // iterate through all active keys
655                        midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
656                        ++iuiKey;
657    
658                        RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
659                        RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
660                        for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
661                          itVoice->Orphan = true;                          itVoice->Orphan = true;
                         pDimRegionsInUse[i++] = itVoice->pDimRgn;  
662                      }                      }
663                  }                  }
664              }              }
665              pDimRegionsInUse[i] = 0; // end of list          }
666            if (instrumentChanged) {
667              // send a reply to the calling thread, which is waiting              //TODO: this is a lazy solution ATM and not safe in case somebody is currently editing the instrument we're currently switching to (we should store all suspended regions on instrument manager side and when switching to another instrument copy that list to the engine's local list of suspensions
668              instrument_change_reply_t reply;              ResetSuspendedRegions();
             InstrumentChangeReplyQueue->push(&reply);  
669          }          }
670    
671          // handle events on all engine channels          // handle events on all engine channels
# Line 452  namespace LinuxSampler { namespace gig { Line 700  namespace LinuxSampler { namespace gig {
700          pVoiceStealingQueue->clear();          pVoiceStealingQueue->clear();
701    
702          // just some statistics about this engine instance          // just some statistics about this engine instance
703          ActiveVoiceCount = ActiveVoiceCountTemp;          SetVoiceCount(ActiveVoiceCountTemp);
704          if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount;          if (VoiceCount() > ActiveVoiceCountMax) ActiveVoiceCountMax = VoiceCount();
705    
706            // in case regions were previously suspended and we killed voices
707            // with disk streams due to that, check if those streams have finally
708            // been deleted by the disk thread
709            if (iPendingStreamDeletions) ProcessPendingStreamDeletions();
710    
711            for (int i = 0; i < engineChannels.size(); i++) {
712                engineChannels[i]->InstrumentChangeCommandReader.Unlock();
713            }
714          FrameTime += Samples;          FrameTime += Samples;
715    
716            EngineDisabled.RttDone();
717          return 0;          return 0;
718      }      }
719    
# Line 522  namespace LinuxSampler { namespace gig { Line 779  namespace LinuxSampler { namespace gig {
779          if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted          if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted
780          #endif          #endif
781    
782            uint voiceCount = 0;
783            uint streamCount = 0;
784          RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();          RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
785          RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();          RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();
786          while (iuiKey != end) { // iterate through all active keys          while (iuiKey != end) { // iterate through all active keys
# Line 533  namespace LinuxSampler { namespace gig { Line 792  namespace LinuxSampler { namespace gig {
792              for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key              for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
793                  // now render current voice                  // now render current voice
794                  itVoice->Render(Samples);                  itVoice->Render(Samples);
795                  if (itVoice->IsActive()) ActiveVoiceCountTemp++; // still active                  if (itVoice->IsActive()) { // still active
796                  else { // voice reached end, is now inactive                      if (!itVoice->Orphan) {
797                            *(pEngineChannel->pDimRegionsInUse->allocAppend()) = itVoice->pDimRgn;
798                        }
799                        ActiveVoiceCountTemp++;
800                        voiceCount++;
801    
802                        if (itVoice->PlaybackState == Voice::playback_state_disk) {
803                            if ((itVoice->DiskStreamRef).State != Stream::state_unused) streamCount++;
804                        }
805                    }  else { // voice reached end, is now inactive
806                      FreeVoice(pEngineChannel, itVoice); // remove voice from the list of active voices                      FreeVoice(pEngineChannel, itVoice); // remove voice from the list of active voices
807                  }                  }
808              }              }
809          }          }
810    
811            pEngineChannel->SetVoiceCount(voiceCount);
812            pEngineChannel->SetDiskStreamCount(streamCount);
813      }      }
814    
815      /**      /**
# Line 564  namespace LinuxSampler { namespace gig { Line 835  namespace LinuxSampler { namespace gig {
835                  LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false, false);                  LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false, false);
836              if (itNewVoice) {              if (itNewVoice) {
837                  itNewVoice->Render(Samples);                  itNewVoice->Render(Samples);
838                  if (itNewVoice->IsActive()) ActiveVoiceCountTemp++; // still active                  if (itNewVoice->IsActive()) { // still active
839                  else { // voice reached end, is now inactive                      *(pEngineChannel->pDimRegionsInUse->allocAppend()) = itNewVoice->pDimRgn;
840                        ActiveVoiceCountTemp++;
841                        pEngineChannel->SetVoiceCount(pEngineChannel->GetVoiceCount() + 1);
842    
843                        if (itNewVoice->PlaybackState == Voice::playback_state_disk) {
844                            if (itNewVoice->DiskStreamRef.State != Stream::state_unused) {
845                                pEngineChannel->SetDiskStreamCount(pEngineChannel->GetDiskStreamCount() + 1);
846                            }
847                        }
848                    } else { // voice reached end, is now inactive
849                      FreeVoice(pEngineChannel, itNewVoice); // remove voice from the list of active voices                      FreeVoice(pEngineChannel, itNewVoice); // remove voice from the list of active voices
850                  }                  }
851              }              }
# Line 592  namespace LinuxSampler { namespace gig { Line 872  namespace LinuxSampler { namespace gig {
872       *                         this audio fragment cycle       *                         this audio fragment cycle
873       */       */
874      void Engine::RouteAudio(EngineChannel* pEngineChannel, uint Samples) {      void Engine::RouteAudio(EngineChannel* pEngineChannel, uint Samples) {
875          // route master signal          // route dry signal
876          {          {
877              AudioChannel* pDstL = pAudioOutputDevice->Channel(pEngineChannel->AudioDeviceChannelLeft);              AudioChannel* pDstL = pAudioOutputDevice->Channel(pEngineChannel->AudioDeviceChannelLeft);
878              AudioChannel* pDstR = pAudioOutputDevice->Channel(pEngineChannel->AudioDeviceChannelRight);              AudioChannel* pDstR = pAudioOutputDevice->Channel(pEngineChannel->AudioDeviceChannelRight);
# Line 603  namespace LinuxSampler { namespace gig { Line 883  namespace LinuxSampler { namespace gig {
883          {          {
884              for (int iFxSend = 0; iFxSend < pEngineChannel->GetFxSendCount(); iFxSend++) {              for (int iFxSend = 0; iFxSend < pEngineChannel->GetFxSendCount(); iFxSend++) {
885                  FxSend* pFxSend = pEngineChannel->GetFxSend(iFxSend);                  FxSend* pFxSend = pEngineChannel->GetFxSend(iFxSend);
886                  // left channel                  for (int iChan = 0; iChan < 2; ++iChan) {
887                  const int iDstL = pFxSend->DestinationChannel(0);                      AudioChannel* pSource =
888                  if (iDstL < 0) {                          (iChan)
889                      dmsg(1,("Engine::RouteAudio() Error: invalid FX send (L) destination channel"));                              ? pEngineChannel->pChannelRight
890                  } else {                              : pEngineChannel->pChannelLeft;
891                      AudioChannel* pDstL = pAudioOutputDevice->Channel(iDstL);                      const int iDstChan = pFxSend->DestinationChannel(iChan);
892                      if (!pDstL) {                      if (iDstChan < 0) {
893                          dmsg(1,("Engine::RouteAudio() Error: invalid FX send (L) destination channel"));                          dmsg(1,("Engine::RouteAudio() Error: invalid FX send (%s) destination channel (%d->%d)", ((iChan) ? "R" : "L"), iChan, iDstChan));
894                      } else pEngineChannel->pChannelLeft->MixTo(pDstL, Samples, pFxSend->Level());                          goto channel_cleanup;
895                  }                      }
896                  // right channel                      AudioChannel* pDstChan = NULL;
897                  const int iDstR = pFxSend->DestinationChannel(1);                      if (pFxSend->DestinationMasterEffectChain() >= 0) { // fx send routed to an internal master effect
898                  if (iDstR < 0) {                          EffectChain* pEffectChain =
899                      dmsg(1,("Engine::RouteAudio() Error: invalid FX send (R) destination channel"));                              pAudioOutputDevice->MasterEffectChain(
900                  } else {                                  pFxSend->DestinationMasterEffectChain()
901                      AudioChannel* pDstR = pAudioOutputDevice->Channel(iDstR);                              );
902                      if (!pDstR) {                          if (!pEffectChain) {
903                          dmsg(1,("Engine::RouteAudio() Error: invalid FX send (R) destination channel"));                              dmsg(1,("Engine::RouteAudio() Error: invalid FX send (%s) destination effect chain %d", ((iChan) ? "R" : "L"), pFxSend->DestinationMasterEffectChain()));
904                      } else pEngineChannel->pChannelRight->MixTo(pDstR, Samples, pFxSend->Level());                              goto channel_cleanup;
905                            }
906                            Effect* pEffect =
907                                pEffectChain->GetEffect(
908                                    pFxSend->DestinationMasterEffect()
909                                );
910                            if (!pEffect) {
911                                dmsg(1,("Engine::RouteAudio() Error: invalid FX send (%s) destination effect %d of effect chain %d", ((iChan) ? "R" : "L"), pFxSend->DestinationMasterEffect(), pFxSend->DestinationMasterEffectChain()));
912                                goto channel_cleanup;
913                            }
914                            pDstChan = pEffect->InputChannel(iDstChan);
915                        } else { // FX send routed directly to an audio output channel
916                            pDstChan = pAudioOutputDevice->Channel(iDstChan);
917                        }
918                        if (!pDstChan) {
919                            dmsg(1,("Engine::RouteAudio() Error: invalid FX send (%s) destination channel (%d->%d)", ((iChan) ? "R" : "L"), iChan, iDstChan));
920                            goto channel_cleanup;
921                        }
922                        pSource->MixTo(pDstChan, Samples, pFxSend->Level());
923                  }                  }
924              }              }
925          }          }
926            channel_cleanup:
927          // reset buffers with silence (zero out) for the next audio cycle          // reset buffers with silence (zero out) for the next audio cycle
928          pEngineChannel->pChannelLeft->Clear();          pEngineChannel->pChannelLeft->Clear();
929          pEngineChannel->pChannelRight->Clear();          pEngineChannel->pChannelRight->Clear();
# Line 670  namespace LinuxSampler { namespace gig { Line 969  namespace LinuxSampler { namespace gig {
969       *       *
970       *  @param pData - pointer to sysex data       *  @param pData - pointer to sysex data
971       *  @param Size  - lenght of sysex data (in bytes)       *  @param Size  - lenght of sysex data (in bytes)
972         *  @param pSender - the MIDI input port on which the SysEx message was
973         *                   received
974       */       */
975      void Engine::SendSysex(void* pData, uint Size) {      void Engine::SendSysex(void* pData, uint Size, MidiInputPort* pSender) {
976          Event event             = pEventGenerator->CreateEvent();          Event event             = pEventGenerator->CreateEvent();
977          event.Type              = Event::type_sysex;          event.Type              = Event::type_sysex;
978          event.Param.Sysex.Size  = Size;          event.Param.Sysex.Size  = Size;
979          event.pEngineChannel    = NULL; // as Engine global event          event.pEngineChannel    = NULL; // as Engine global event
980            event.pMidiInputPort    = pSender;
981          if (pEventQueue->write_space() > 0) {          if (pEventQueue->write_space() > 0) {
982              if (pSysexBuffer->write_space() >= Size) {              if (pSysexBuffer->write_space() >= Size) {
983                  // copy sysex data to input buffer                  // copy sysex data to input buffer
# Line 769  namespace LinuxSampler { namespace gig { Line 1071  namespace LinuxSampler { namespace gig {
1071          {          {
1072              // first, get total amount of required voices (dependant on amount of layers)              // first, get total amount of required voices (dependant on amount of layers)
1073              ::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOnEventOnKeyList->Param.Note.Key);              ::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOnEventOnKeyList->Param.Note.Key);
1074              if (pRegion) {              if (pRegion && !RegionSuspended(pRegion)) {
1075                  int voicesRequired = pRegion->Layers;                  int voicesRequired = pRegion->Layers;
1076                  // now launch the required amount of voices                  // now launch the required amount of voices
1077                  for (int i = 0; i < voicesRequired; i++)                  for (int i = 0; i < voicesRequired; i++)
# Line 1353  namespace LinuxSampler { namespace gig { Line 1655  namespace LinuxSampler { namespace gig {
1655      void Engine::ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent) {      void Engine::ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent) {
1656          dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value));          dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value));
1657    
1658            // handle the "control triggered" MIDI rule: a control change
1659            // event can trigger a new note on or note off event
1660            if (pEngineChannel->pInstrument) {
1661    
1662                ::gig::MidiRule* rule;
1663                for (int i = 0 ; (rule = pEngineChannel->pInstrument->GetMidiRule(i)) ; i++) {
1664    
1665                    if (::gig::MidiRuleCtrlTrigger* ctrlTrigger =
1666                        dynamic_cast< ::gig::MidiRuleCtrlTrigger*>(rule)) {
1667                        if (itControlChangeEvent->Param.CC.Controller ==
1668                            ctrlTrigger->ControllerNumber) {
1669    
1670                            uint8_t oldCCValue = pEngineChannel->ControllerTable[
1671                                itControlChangeEvent->Param.CC.Controller];
1672                            uint8_t newCCValue = itControlChangeEvent->Param.CC.Value;
1673    
1674                            for (int i = 0 ; i < ctrlTrigger->Triggers ; i++) {
1675                                ::gig::MidiRuleCtrlTrigger::trigger_t* pTrigger =
1676                                      &ctrlTrigger->pTriggers[i];
1677    
1678                                // check if the controller has passed the
1679                                // trigger point in the right direction
1680                                if ((pTrigger->Descending &&
1681                                     oldCCValue > pTrigger->TriggerPoint &&
1682                                     newCCValue <= pTrigger->TriggerPoint) ||
1683                                    (!pTrigger->Descending &&
1684                                     oldCCValue < pTrigger->TriggerPoint &&
1685                                     newCCValue >= pTrigger->TriggerPoint)) {
1686    
1687                                    RTList<Event>::Iterator itNewEvent = pGlobalEvents->allocAppend();
1688                                    if (itNewEvent) {
1689                                        *itNewEvent = *itControlChangeEvent;
1690                                        itNewEvent->Param.Note.Key = pTrigger->Key;
1691    
1692                                        if (pTrigger->NoteOff || pTrigger->Velocity == 0) {
1693                                            itNewEvent->Type = Event::type_note_off;
1694                                            itNewEvent->Param.Note.Velocity = 100;
1695    
1696                                            ProcessNoteOff(pEngineChannel, itNewEvent);
1697                                        } else {
1698                                            itNewEvent->Type = Event::type_note_on;
1699                                            //TODO: if Velocity is 255, the triggered velocity should
1700                                            // depend on how fast the controller is moving
1701                                            itNewEvent->Param.Note.Velocity =
1702                                                pTrigger->Velocity == 255 ? 100 :
1703                                                pTrigger->Velocity;
1704    
1705                                            ProcessNoteOn(pEngineChannel, itNewEvent);
1706                                        }
1707                                    }
1708                                    else dmsg(1,("Event pool emtpy!\n"));
1709                                }
1710                            }
1711                        }
1712                    }
1713                }
1714            }
1715    
1716          // update controller value in the engine channel's controller table          // update controller value in the engine channel's controller table
1717          pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;          pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;
1718    
# Line 1372  namespace LinuxSampler { namespace gig { Line 1732  namespace LinuxSampler { namespace gig {
1732                      // workaround, so we won't have hanging notes                      // workaround, so we won't have hanging notes
1733                      ReleaseAllVoices(pEngineChannel, itControlChangeEvent);                      ReleaseAllVoices(pEngineChannel, itControlChangeEvent);
1734                  }                  }
1735                    // to avoid other MIDI CC #6 messages to be misenterpreted as RPN controller data
1736                    pEngineChannel->ResetMidiRpnController();
1737                  break;                  break;
1738              }              }
1739              case 7: { // volume              case 7: { // volume
# Line 1384  namespace LinuxSampler { namespace gig { Line 1746  namespace LinuxSampler { namespace gig {
1746                  //TODO: not sample accurate yet                  //TODO: not sample accurate yet
1747                  pEngineChannel->GlobalPanLeft  = PanCurve[128 - itControlChangeEvent->Param.CC.Value];                  pEngineChannel->GlobalPanLeft  = PanCurve[128 - itControlChangeEvent->Param.CC.Value];
1748                  pEngineChannel->GlobalPanRight = PanCurve[itControlChangeEvent->Param.CC.Value];                  pEngineChannel->GlobalPanRight = PanCurve[itControlChangeEvent->Param.CC.Value];
1749                    pEngineChannel->iLastPanRequest = itControlChangeEvent->Param.CC.Value;
1750                  break;                  break;
1751              }              }
1752              case 64: { // sustain              case 64: { // sustain
# Line 1434  namespace LinuxSampler { namespace gig { Line 1797  namespace LinuxSampler { namespace gig {
1797                  break;                  break;
1798              }              }
1799              case 65: { // portamento on / off              case 65: { // portamento on / off
1800                  KillAllVoices(pEngineChannel, itControlChangeEvent);                  const bool bPortamento = itControlChangeEvent->Param.CC.Value >= 64;
1801                  pEngineChannel->PortamentoMode = itControlChangeEvent->Param.CC.Value >= 64;                  if (bPortamento != pEngineChannel->PortamentoMode)
1802                        KillAllVoices(pEngineChannel, itControlChangeEvent);
1803                    pEngineChannel->PortamentoMode = bPortamento;
1804                  break;                  break;
1805              }              }
1806              case 66: { // sostenuto              case 66: { // sostenuto
# Line 1505  namespace LinuxSampler { namespace gig { Line 1870  namespace LinuxSampler { namespace gig {
1870                  break;                  break;
1871              }              }
1872              case 126: { // mono mode on              case 126: { // mono mode on
1873                  KillAllVoices(pEngineChannel, itControlChangeEvent);                  if (!pEngineChannel->SoloMode)
1874                        KillAllVoices(pEngineChannel, itControlChangeEvent);
1875                  pEngineChannel->SoloMode = true;                  pEngineChannel->SoloMode = true;
1876                  break;                  break;
1877              }              }
1878              case 127: { // poly mode on              case 127: { // poly mode on
1879                  KillAllVoices(pEngineChannel, itControlChangeEvent);                  if (pEngineChannel->SoloMode)
1880                        KillAllVoices(pEngineChannel, itControlChangeEvent);
1881                  pEngineChannel->SoloMode = false;                  pEngineChannel->SoloMode = false;
1882                  break;                  break;
1883              }              }
# Line 1520  namespace LinuxSampler { namespace gig { Line 1887  namespace LinuxSampler { namespace gig {
1887          if (!pEngineChannel->fxSends.empty()) {          if (!pEngineChannel->fxSends.empty()) {
1888              for (int iFxSend = 0; iFxSend < pEngineChannel->GetFxSendCount(); iFxSend++) {              for (int iFxSend = 0; iFxSend < pEngineChannel->GetFxSendCount(); iFxSend++) {
1889                  FxSend* pFxSend = pEngineChannel->GetFxSend(iFxSend);                  FxSend* pFxSend = pEngineChannel->GetFxSend(iFxSend);
1890                  if (pFxSend->MidiController() == itControlChangeEvent->Param.CC.Controller)                  if (pFxSend->MidiController() == itControlChangeEvent->Param.CC.Controller) {
1891                      pFxSend->SetLevel(itControlChangeEvent->Param.CC.Value);                      pFxSend->SetLevel(itControlChangeEvent->Param.CC.Value);
1892                        pFxSend->SetInfoChanged(true);
1893                    }
1894              }              }
1895          }          }
1896      }      }
# Line 1540  namespace LinuxSampler { namespace gig { Line 1909  namespace LinuxSampler { namespace gig {
1909          if (exclusive_status != 0xF0)       goto free_sysex_data;          if (exclusive_status != 0xF0)       goto free_sysex_data;
1910    
1911          switch (id) {          switch (id) {
1912                case 0x7f: { // (Realtime) Universal Sysex (GM Standard)
1913                    uint8_t sysex_channel, sub_id1, sub_id2, val_msb, val_lsb;;
1914                    if (!reader.pop(&sysex_channel)) goto free_sysex_data;
1915                    if (!reader.pop(&sub_id1)) goto free_sysex_data;
1916                    if (!reader.pop(&sub_id2)) goto free_sysex_data;
1917                    if (!reader.pop(&val_lsb)) goto free_sysex_data;
1918                    if (!reader.pop(&val_msb)) goto free_sysex_data;
1919                    //TODO: for now we simply ignore the sysex channel, seldom used anyway
1920                    switch (sub_id1) {
1921                        case 0x04: // Device Control
1922                            switch (sub_id2) {
1923                                case 0x01: { // Master Volume
1924                                    const double volume =
1925                                        double((uint(val_msb)<<7) | uint(val_lsb)) / 16383.0;
1926                                    #if CONFIG_MASTER_VOLUME_SYSEX_BY_PORT
1927                                    // apply volume to all sampler channels that
1928                                    // are connected to the same MIDI input port
1929                                    // this sysex message arrived on
1930                                    for (int i = 0; i < engineChannels.size(); ++i) {
1931                                        EngineChannel* pEngineChannel = engineChannels[i];
1932                                        if (pEngineChannel->GetMidiInputPort() ==
1933                                            itSysexEvent->pMidiInputPort)
1934                                        {
1935                                            pEngineChannel->Volume(volume);
1936                                        }
1937                                    }
1938                                    #else
1939                                    // apply volume globally to the whole sampler
1940                                    GLOBAL_VOLUME = volume;
1941                                    #endif // CONFIG_MASTER_VOLUME_SYSEX_BY_PORT
1942                                    break;
1943                                }
1944                            }
1945                            break;
1946                    }
1947                    break;
1948                }
1949              case 0x41: { // Roland              case 0x41: { // Roland
1950                  dmsg(3,("Roland Sysex\n"));                  dmsg(3,("Roland Sysex\n"));
1951                  uint8_t device_id, model_id, cmd_id;                  uint8_t device_id, model_id, cmd_id;
# Line 1555  namespace LinuxSampler { namespace gig { Line 1961  namespace LinuxSampler { namespace gig {
1961                  if (reader.read(&addr[0], 3) != 3) goto free_sysex_data;                  if (reader.read(&addr[0], 3) != 3) goto free_sysex_data;
1962                  if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters                  if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters
1963                      dmsg(3,("\tSystem Parameter\n"));                      dmsg(3,("\tSystem Parameter\n"));
1964                        if (addr[2] == 0x7f) { // GS reset
1965                            for (int i = 0; i < engineChannels.size(); ++i) {
1966                                EngineChannel* pEngineChannel = engineChannels[i];
1967                                if (pEngineChannel->GetMidiInputPort() == itSysexEvent->pMidiInputPort) {
1968                                    KillAllVoices(pEngineChannel, itSysexEvent);
1969                                    pEngineChannel->ResetControllers();
1970                                }
1971                            }
1972                        }
1973                  }                  }
1974                  else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters                  else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters
1975                      dmsg(3,("\tCommon Parameter\n"));                      dmsg(3,("\tCommon Parameter\n"));
# Line 1576  namespace LinuxSampler { namespace gig { Line 1991  namespace LinuxSampler { namespace gig {
1991                              dmsg(3,("\t\t\tNew scale applied.\n"));                              dmsg(3,("\t\t\tNew scale applied.\n"));
1992                              break;                              break;
1993                          }                          }
1994                            case 0x15: { // chromatic / drumkit mode
1995                                dmsg(3,("\t\tMIDI Instrument Map Switch\n"));
1996                                uint8_t part = addr[1] & 0x0f;
1997                                uint8_t map;
1998                                if (!reader.pop(&map)) goto free_sysex_data;
1999                                for (int i = 0; i < engineChannels.size(); ++i) {
2000                                    EngineChannel* pEngineChannel = engineChannels[i];
2001                                    if (
2002                                        (pEngineChannel->midiChannel == part ||
2003                                         pEngineChannel->midiChannel == midi_chan_all) &&
2004                                         pEngineChannel->GetMidiInputPort() == itSysexEvent->pMidiInputPort
2005                                    ) {
2006                                        try {
2007                                            pEngineChannel->SetMidiInstrumentMap(map);
2008                                        } catch (Exception e) {
2009                                            dmsg(2,("\t\t\tCould not apply MIDI instrument map %d to part %d: %s\n", map, part, e.Message().c_str()));
2010                                            goto free_sysex_data;
2011                                        } catch (...) {
2012                                            dmsg(2,("\t\t\tCould not apply MIDI instrument map %d to part %d (unknown exception)\n", map, part));
2013                                            goto free_sysex_data;
2014                                        }
2015                                    }
2016                                }
2017                                dmsg(3,("\t\t\tApplied MIDI instrument map %d to part %d.\n", map, part));
2018                                break;
2019                            }
2020                      }                      }
2021                  }                  }
2022                  else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2)                  else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2)
# Line 1682  namespace LinuxSampler { namespace gig { Line 2123  namespace LinuxSampler { namespace gig {
2123      }      }
2124    
2125      uint Engine::VoiceCount() {      uint Engine::VoiceCount() {
2126          return ActiveVoiceCount;          return atomic_read(&ActiveVoiceCount);
2127        }
2128    
2129        void Engine::SetVoiceCount(uint Count) {
2130            atomic_set(&ActiveVoiceCount, Count);
2131      }      }
2132    
2133      uint Engine::VoiceCountMax() {      uint Engine::VoiceCountMax() {
2134          return ActiveVoiceCountMax;          return ActiveVoiceCountMax;
2135      }      }
2136    
2137        int Engine::MaxVoices() {
2138            return pVoicePool->poolSize();
2139        }
2140    
2141        void Engine::SetMaxVoices(int iVoices) throw (Exception) {
2142            if (iVoices < 1)
2143                throw Exception("Maximum voices for an engine cannot be set lower than 1");
2144    
2145            SuspendAll();
2146    
2147            // NOTE: we need to clear pDimRegionsInUse before deleting pDimRegionPool,
2148            // otherwise memory corruption will occur if there are active voices (see bug #118)
2149            for (int iChannel = 0; iChannel < engineChannels.size(); iChannel++) {
2150                engineChannels[iChannel]->ClearDimRegionsInUse();
2151            }
2152    
2153            if (pDimRegionPool[0]) delete pDimRegionPool[0];
2154            if (pDimRegionPool[1]) delete pDimRegionPool[1];
2155    
2156            pDimRegionPool[0] = new Pool< ::gig::DimensionRegion*>(iVoices);
2157            pDimRegionPool[1] = new Pool< ::gig::DimensionRegion*>(iVoices);
2158    
2159            for (int iChannel = 0; iChannel < engineChannels.size(); iChannel++) {
2160                engineChannels[iChannel]->ResetDimRegionsInUse();
2161            }
2162    
2163            try {
2164                pVoicePool->resizePool(iVoices);
2165            } catch (...) {
2166                throw Exception("FATAL: Could not resize voice pool!");
2167            }
2168    
2169            for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
2170                iterVoice->SetEngine(this);
2171                iterVoice->pDiskThread = this->pDiskThread;
2172            }
2173            pVoicePool->clear();
2174    
2175            ResumeAll();
2176        }
2177    
2178      bool Engine::DiskStreamSupported() {      bool Engine::DiskStreamSupported() {
2179          return true;          return true;
2180      }      }
2181    
2182      uint Engine::DiskStreamCount() {      uint Engine::DiskStreamCount() {
2183          return (pDiskThread) ? pDiskThread->ActiveStreamCount : 0;          return (pDiskThread) ? pDiskThread->GetActiveStreamCount() : 0;
2184      }      }
2185    
2186      uint Engine::DiskStreamCountMax() {      uint Engine::DiskStreamCountMax() {
2187          return (pDiskThread) ? pDiskThread->ActiveStreamCountMax : 0;          return (pDiskThread) ? pDiskThread->ActiveStreamCountMax : 0;
2188      }      }
2189    
2190        int Engine::MaxDiskStreams() {
2191            return iMaxDiskStreams;
2192        }
2193    
2194        void Engine::SetMaxDiskStreams(int iStreams) throw (Exception) {
2195            if (iStreams < 0)
2196                throw Exception("Maximum disk streams for an engine cannot be set lower than 0");
2197    
2198            SuspendAll();
2199    
2200            iMaxDiskStreams = iStreams;
2201    
2202            // reconnect to audio output device, because that will automatically
2203            // recreate the disk thread with the required amount of streams
2204            if (pAudioOutputDevice) Connect(pAudioOutputDevice);
2205    
2206            ResumeAll();
2207        }
2208    
2209      String Engine::DiskStreamBufferFillBytes() {      String Engine::DiskStreamBufferFillBytes() {
2210          return pDiskThread->GetBufferFillBytes();          return pDiskThread->GetBufferFillBytes();
2211      }      }
# Line 1714  namespace LinuxSampler { namespace gig { Line 2219  namespace LinuxSampler { namespace gig {
2219      }      }
2220    
2221      String Engine::Description() {      String Engine::Description() {
2222          return "Gigasampler Engine";          return "Gigasampler Format Engine";
2223      }      }
2224    
2225      String Engine::Version() {      String Engine::Version() {
2226          String s = "$Revision: 1.74 $";          String s = "$Revision: 1.103 $";
2227          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
2228      }      }
2229    
# Line 1727  namespace LinuxSampler { namespace gig { Line 2232  namespace LinuxSampler { namespace gig {
2232      }      }
2233    
2234      // static constant initializers      // static constant initializers
2235      const float* Engine::VolumeCurve(InitVolumeCurve());      const Engine::FloatTable Engine::VolumeCurve(InitVolumeCurve());
2236      const float* Engine::PanCurve(InitPanCurve());      const Engine::FloatTable Engine::PanCurve(InitPanCurve());
2237      const float* Engine::CrossfadeCurve(InitCrossfadeCurve());      const Engine::FloatTable Engine::CrossfadeCurve(InitCrossfadeCurve());
2238    
2239      float* Engine::InitVolumeCurve() {      float* Engine::InitVolumeCurve() {
2240          // line-segment approximation          // line-segment approximation
# Line 1768  namespace LinuxSampler { namespace gig { Line 2273  namespace LinuxSampler { namespace gig {
2273          return y;          return y;
2274      }      }
2275    
     /**  
      * Changes the instrument for an engine channel.  
      *  
      * @param pEngineChannel - engine channel on which the instrument  
      *                         should be changed  
      * @param pInstrument - new instrument  
      * @returns a list of dimension regions from the old instrument  
      *          that are still in use  
      */  
     ::gig::DimensionRegion** Engine::ChangeInstrument(EngineChannel* pEngineChannel, ::gig::Instrument* pInstrument) {  
         instrument_change_command_t command;  
         command.pEngineChannel = pEngineChannel;  
         command.pInstrument = pInstrument;  
         InstrumentChangeQueue->push(&command);  
   
         // wait for the audio thread to confirm that the instrument  
         // change has been done  
         instrument_change_reply_t reply;  
         while (InstrumentChangeReplyQueue->pop(&reply) == 0) {  
             usleep(10000);  
         }  
         return pDimRegionsInUse;  
     }  
   
2276  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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