/[svn]/linuxsampler/trunk/src/engines/EngineBase.h
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Contents of /linuxsampler/trunk/src/engines/EngineBase.h

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Thu Jun 5 19:39:12 2014 UTC (9 years, 9 months ago) by schoenebeck
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* ScriptVM (WIP): Implemented execution of script event
  handlers "note" and "release".
* ScriptVM (WIP): Implemented built-in script function
  "play_note()" (only two of the max. four function
  arguments are currently implemented yet though).
* ScriptVM (WIP): Fixed incorrect handling of
  suspended scripts.
* Bumped version (1.0.0.svn43).

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck *
6 * Copyright (C) 2005-2008 Christian Schoenebeck *
7 * Copyright (C) 2009-2013 Christian Schoenebeck and Grigor Iliev *
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 * This program is distributed in the hope that it will be useful, *
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
17 * GNU General Public License for more details. *
18 * *
19 * You should have received a copy of the GNU General Public License *
20 * along with this program; if not, write to the Free Software *
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
22 * MA 02111-1307 USA *
23 ***************************************************************************/
24
25 #ifndef __LS_ENGINEBASE_H__
26 #define __LS_ENGINEBASE_H__
27
28 #include "AbstractEngine.h"
29 #include "EngineChannelBase.h"
30 #include "common/DiskThreadBase.h"
31 #include "common/MidiKeyboardManager.h"
32 #include "InstrumentManager.h"
33 #include "../common/global_private.h"
34
35
36 namespace LinuxSampler {
37
38 class AbstractEngineChannel;
39
40 template <
41 class V /* Voice */,
42 class RR /* Root Region */,
43 class R /* Region */,
44 class D /* Disk Thread */,
45 class IM /* Instrument Manager */,
46 class I /* Instrument */
47 >
48 class EngineBase: public AbstractEngine, public RegionPools<R>, public VoicePool<V> {
49
50 public:
51 typedef typename RTList<V>::Iterator VoiceIterator;
52 typedef typename Pool<V>::Iterator PoolVoiceIterator;
53 typedef typename RTList<RR*>::Iterator RootRegionIterator;
54 typedef typename MidiKeyboardManager<V>::MidiKey MidiKey;
55
56 EngineBase() : SuspendedRegions(128) {
57 pDiskThread = NULL;
58 pVoicePool = new Pool<V>(GLOBAL_MAX_VOICES);
59 pRegionPool[0] = new Pool<R*>(GLOBAL_MAX_VOICES);
60 pRegionPool[1] = new Pool<R*>(GLOBAL_MAX_VOICES);
61 pVoiceStealingQueue = new RTList<Event>(pEventPool);
62 iMaxDiskStreams = GLOBAL_MAX_STREAMS;
63
64 for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
65 iterVoice->SetEngine(this);
66 }
67 pVoicePool->clear();
68
69 ResetInternal();
70 ResetScaleTuning();
71 ResetSuspendedRegions();
72 }
73
74 virtual ~EngineBase() {
75 if (pDiskThread) {
76 dmsg(1,("Stopping disk thread..."));
77 pDiskThread->StopThread();
78 delete pDiskThread;
79 dmsg(1,("OK\n"));
80 }
81
82 if (pVoicePool) {
83 pVoicePool->clear();
84 delete pVoicePool;
85 }
86
87 if (pVoiceStealingQueue) delete pVoiceStealingQueue;
88
89 if (pRegionPool[0]) delete pRegionPool[0];
90 if (pRegionPool[1]) delete pRegionPool[1];
91 ResetSuspendedRegions();
92 }
93
94 // implementation of abstract methods derived from class 'LinuxSampler::Engine'
95
96 /**
97 * Let this engine proceed to render the given amount of sample points.
98 * The engine will iterate through all engine channels and render audio
99 * for each engine channel independently. The calculated audio data of
100 * all voices of each engine channel will be placed into the audio sum
101 * buffers of the respective audio output device, connected to the
102 * respective engine channel.
103 *
104 * @param Samples - number of sample points to be rendered
105 * @returns 0 on success
106 */
107 virtual int RenderAudio(uint Samples) OVERRIDE {
108 dmsg(8,("RenderAudio(Samples=%d)\n", Samples));
109
110 // return if engine disabled
111 if (EngineDisabled.Pop()) {
112 dmsg(5,("EngineBase: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe()));
113 EngineDisabled.RttDone();
114 return 0;
115 }
116
117 // process requests for suspending / resuming regions (i.e. to avoid
118 // crashes while these regions are modified by an instrument editor)
119 ProcessSuspensionsChanges();
120
121 // update time of start and end of this audio fragment (as events' time stamps relate to this)
122 pEventGenerator->UpdateFragmentTime(Samples);
123
124 // We only allow the given maximum number of voices to be spawned
125 // in each audio fragment. All subsequent request for spawning new
126 // voices in the same audio fragment will be ignored.
127 VoiceSpawnsLeft = MaxVoices();
128
129 // get all events from the engine's global input event queue which belong to the current fragment
130 // (these are usually just SysEx messages)
131 ImportEvents(Samples);
132
133 // process engine global events (these are currently only MIDI System Exclusive messages)
134 {
135 RTList<Event>::Iterator itEvent = pGlobalEvents->first();
136 RTList<Event>::Iterator end = pGlobalEvents->end();
137 for (; itEvent != end; ++itEvent) {
138 switch (itEvent->Type) {
139 case Event::type_sysex:
140 dmsg(5,("Engine: Sysex received\n"));
141 ProcessSysex(itEvent);
142 break;
143 }
144 }
145 }
146
147 // In case scale tuning has been changed, recalculate pitch for
148 // all active voices.
149 ProcessScaleTuningChange();
150
151 // reset internal voice counter (just for statistic of active voices)
152 ActiveVoiceCountTemp = 0;
153
154 HandleInstrumentChanges();
155
156 // handle events on all engine channels
157 for (int i = 0; i < engineChannels.size(); i++) {
158 ProcessEvents(engineChannels[i], Samples);
159 }
160
161 // render all 'normal', active voices on all engine channels
162 for (int i = 0; i < engineChannels.size(); i++) {
163 RenderActiveVoices(engineChannels[i], Samples);
164 }
165
166 // now that all ordinary voices on ALL engine channels are rendered, render new stolen voices
167 RenderStolenVoices(Samples);
168
169 // handle audio routing for engine channels with FX sends
170 for (int i = 0; i < engineChannels.size(); i++) {
171 AbstractEngineChannel* pChannel = static_cast<AbstractEngineChannel*>(engineChannels[i]);
172 if (pChannel->fxSends.empty()) continue; // ignore if no FX sends
173 RouteAudio(engineChannels[i], Samples);
174 }
175
176 // handle cleanup on all engine channels for the next audio fragment
177 for (int i = 0; i < engineChannels.size(); i++) {
178 PostProcess(engineChannels[i]);
179 }
180
181
182 // empty the engine's event list for the next audio fragment
183 ClearEventLists();
184
185 // reset voice stealing for the next audio fragment
186 pVoiceStealingQueue->clear();
187
188 // just some statistics about this engine instance
189 SetVoiceCount(ActiveVoiceCountTemp);
190 if (VoiceCount() > ActiveVoiceCountMax) ActiveVoiceCountMax = VoiceCount();
191
192 // in case regions were previously suspended and we killed voices
193 // with disk streams due to that, check if those streams have finally
194 // been deleted by the disk thread
195 if (iPendingStreamDeletions) ProcessPendingStreamDeletions();
196
197 // Release the instrument change command. (This has to
198 // be done after all voices have been rendered and not
199 // in HandleInstrumentChanges, as the RegionsInUse
200 // list has been built up by the voice renderers.)
201 for (int i = 0; i < engineChannels.size(); i++) {
202 EngineChannelBase<V, R, I>* channel =
203 static_cast<EngineChannelBase<V, R, I>*>(engineChannels[i]);
204 channel->InstrumentChangeCommandReader.Unlock();
205 }
206 FrameTime += Samples;
207
208 EngineDisabled.RttDone();
209 return 0;
210 }
211
212 virtual int MaxVoices() OVERRIDE { return pVoicePool->poolSize(); }
213
214 virtual void SetMaxVoices(int iVoices) throw (Exception) OVERRIDE {
215 if (iVoices < 1)
216 throw Exception("Maximum voices for an engine cannot be set lower than 1");
217
218 SuspendAll();
219
220 // NOTE: we need to clear pRegionsInUse before deleting pDimRegionPool,
221 // otherwise memory corruption will occur if there are active voices (see bug #118)
222 for (int iChannel = 0; iChannel < engineChannels.size(); iChannel++) {
223 EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannel]);
224 pChannel->ClearRegionsInUse();
225 }
226
227 if (pRegionPool[0]) delete pRegionPool[0];
228 if (pRegionPool[1]) delete pRegionPool[1];
229
230 pRegionPool[0] = new Pool<R*>(iVoices);
231 pRegionPool[1] = new Pool<R*>(iVoices);
232
233 for (int iChannel = 0; iChannel < engineChannels.size(); iChannel++) {
234 EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannel]);
235 pChannel->ResetRegionsInUse(pRegionPool);
236 }
237
238 try {
239 pVoicePool->resizePool(iVoices);
240 } catch (...) {
241 throw Exception("FATAL: Could not resize voice pool!");
242 }
243
244 for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
245 iterVoice->SetEngine(this);
246 iterVoice->pDiskThread = this->pDiskThread;
247 }
248 pVoicePool->clear();
249
250 PostSetMaxVoices(iVoices);
251 ResumeAll();
252 }
253
254 /** Called after the new max number of voices is set and before resuming the engine. */
255 virtual void PostSetMaxVoices(int iVoices) { }
256
257 virtual uint DiskStreamCount() OVERRIDE { return (pDiskThread) ? pDiskThread->GetActiveStreamCount() : 0; }
258 virtual uint DiskStreamCountMax() OVERRIDE { return (pDiskThread) ? pDiskThread->ActiveStreamCountMax : 0; }
259 virtual int MaxDiskStreams() OVERRIDE { return iMaxDiskStreams; }
260
261 virtual void SetMaxDiskStreams(int iStreams) throw (Exception) OVERRIDE {
262 if (iStreams < 0)
263 throw Exception("Maximum disk streams for an engine cannot be set lower than 0");
264
265 SuspendAll();
266
267 iMaxDiskStreams = iStreams;
268
269 // reconnect to audio output device, because that will automatically
270 // recreate the disk thread with the required amount of streams
271 if (pAudioOutputDevice) Connect(pAudioOutputDevice);
272
273 ResumeAll();
274 }
275
276 virtual String DiskStreamBufferFillBytes() OVERRIDE { return (pDiskThread) ? pDiskThread->GetBufferFillBytes() : ""; }
277 virtual String DiskStreamBufferFillPercentage() OVERRIDE { return (pDiskThread) ? pDiskThread->GetBufferFillPercentage() : ""; }
278 virtual InstrumentManager* GetInstrumentManager() OVERRIDE { return &instruments; }
279
280 /**
281 * Connect this engine instance with the given audio output device.
282 * This method will be called when an Engine instance is created.
283 * All of the engine's data structures which are dependant to the used
284 * audio output device / driver will be (re)allocated and / or
285 * adjusted appropriately.
286 *
287 * @param pAudioOut - audio output device to connect to
288 */
289 virtual void Connect(AudioOutputDevice* pAudioOut) OVERRIDE {
290 // caution: don't ignore if connecting to the same device here,
291 // because otherwise SetMaxDiskStreams() implementation won't work anymore!
292
293 pAudioOutputDevice = pAudioOut;
294
295 ResetInternal();
296
297 // inform audio driver for the need of two channels
298 try {
299 pAudioOutputDevice->AcquireChannels(2); // default stereo
300 }
301 catch (AudioOutputException e) {
302 String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message();
303 throw Exception(msg);
304 }
305
306 this->MaxSamplesPerCycle = pAudioOutputDevice->MaxSamplesPerCycle();
307 this->SampleRate = pAudioOutputDevice->SampleRate();
308
309 MinFadeOutSamples = int(double(SampleRate) * CONFIG_EG_MIN_RELEASE_TIME) - 1;
310 if (MaxSamplesPerCycle < MinFadeOutSamples) {
311 std::cerr << "EngineBase: WARNING, CONFIG_EG_MIN_RELEASE_TIME "
312 << "too big for current audio fragment size & sampling rate! "
313 << "May lead to click sounds if voice stealing chimes in!\n" << std::flush;
314 // force volume ramp downs at the beginning of each fragment
315 MinFadeOutSamples = MaxSamplesPerCycle;
316 // lower minimum release time
317 const float minReleaseTime = (float) MaxSamplesPerCycle / (float) SampleRate;
318 for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
319 iterVoice->CalculateFadeOutCoeff(minReleaseTime, SampleRate);
320 }
321 pVoicePool->clear();
322 }
323
324 // (re)create disk thread
325 if (this->pDiskThread) {
326 dmsg(1,("Stopping disk thread..."));
327 this->pDiskThread->StopThread();
328 delete this->pDiskThread;
329 dmsg(1,("OK\n"));
330 }
331 this->pDiskThread = CreateDiskThread();
332
333 if (!pDiskThread) {
334 dmsg(0,("EngineBase new diskthread = NULL\n"));
335 exit(EXIT_FAILURE);
336 }
337
338 for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
339 iterVoice->pDiskThread = this->pDiskThread;
340 dmsg(3,("d"));
341 }
342 pVoicePool->clear();
343
344 // (re)create event generator
345 if (pEventGenerator) delete pEventGenerator;
346 pEventGenerator = new EventGenerator(pAudioOut->SampleRate());
347
348 dmsg(1,("Starting disk thread..."));
349 pDiskThread->StartThread();
350 dmsg(1,("OK\n"));
351
352 bool printEqInfo = true;
353 for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
354 if (!iterVoice->pDiskThread) {
355 dmsg(0,("Engine -> voice::trigger: !pDiskThread\n"));
356 exit(EXIT_FAILURE);
357 }
358
359 iterVoice->CreateEq();
360
361 if(printEqInfo) {
362 iterVoice->PrintEqInfo();
363 printEqInfo = false;
364 }
365 }
366 pVoicePool->clear();
367
368 // (re)create dedicated voice audio buffers
369 //TODO: we could optimize resource usage a bit by just allocating these dedicated voice buffers when there is at least one engine channel with FX sends, because only in this case those special buffers are used actually, but since it would usually only save couple bytes in total, its probably not worth it
370 if (pDedicatedVoiceChannelLeft) delete pDedicatedVoiceChannelLeft;
371 if (pDedicatedVoiceChannelRight) delete pDedicatedVoiceChannelRight;
372 pDedicatedVoiceChannelLeft = new AudioChannel(0, MaxSamplesPerCycle);
373 pDedicatedVoiceChannelRight = new AudioChannel(1, MaxSamplesPerCycle);
374 }
375
376 // Implementattion for abstract method derived from Engine.
377 virtual void ReconnectAudioOutputDevice() OVERRIDE {
378 SuspendAll();
379 if (pAudioOutputDevice) Connect(pAudioOutputDevice);
380 ResumeAll();
381 }
382
383 /**
384 * Similar to @c Disable() but this method additionally kills all voices
385 * and disk streams and blocks until all voices and disk streams are actually
386 * killed / deleted.
387 *
388 * @e Note: only the original calling thread is able to re-enable the
389 * engine afterwards by calling @c ResumeAll() later on!
390 */
391 virtual void SuspendAll() {
392 dmsg(2,("Engine: Suspending all ...\n"));
393 // stop the engine, so we can safely modify the engine's
394 // data structures from this foreign thread
395 DisableAndLock();
396 // we could also use the respective class member variable here,
397 // but this is probably safer and cleaner
398 int iPendingStreamDeletions = 0;
399 // kill all voices on all engine channels the *die hard* way
400 for (int iChannel = 0; iChannel < engineChannels.size(); iChannel++) {
401 EngineChannelBase<V, R, I>* pEngineChannel =
402 static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannel]);
403
404 iPendingStreamDeletions += pEngineChannel->KillAllVoicesImmediately();
405 }
406 // wait until all streams were actually deleted by the disk thread
407 while (iPendingStreamDeletions) {
408 while (
409 iPendingStreamDeletions &&
410 pDiskThread->AskForDeletedStream() != Stream::INVALID_HANDLE
411 ) iPendingStreamDeletions--;
412 if (!iPendingStreamDeletions) break;
413 usleep(10000); // sleep for 10ms
414 }
415 dmsg(2,("EngineBase: Everything suspended.\n"));
416 }
417
418 /**
419 * At the moment same as calling @c Enable() directly, but this might
420 * change in future, so better call this method as counterpart to
421 * @c SuspendAll() instead of @c Enable() !
422 */
423 virtual void ResumeAll() { Enable(); }
424
425 /**
426 * Order the engine to stop rendering audio for the given region.
427 * Additionally this method will block until all voices and their disk
428 * streams associated with that region are actually killed / deleted, so
429 * one can i.e. safely modify the region with an instrument editor after
430 * returning from this method.
431 *
432 * @param pRegion - region the engine shall stop using
433 */
434 virtual void Suspend(RR* pRegion) {
435 dmsg(2,("EngineBase: Suspending Region %x ...\n",pRegion));
436 {
437 LockGuard lock(SuspendedRegionsMutex);
438 SuspensionChangeOngoing.Set(true);
439 pPendingRegionSuspension = pRegion;
440 SuspensionChangeOngoing.WaitAndUnlockIf(true);
441 }
442 dmsg(2,("EngineBase: Region %x suspended.",pRegion));
443 }
444
445 /**
446 * Orders the engine to resume playing back the given region, previously
447 * suspended with @c Suspend() .
448 *
449 * @param pRegion - region the engine shall be allowed to use again
450 */
451 virtual void Resume(RR* pRegion) {
452 dmsg(2,("EngineBase: Resuming Region %x ...\n",pRegion));
453 {
454 LockGuard lock(SuspendedRegionsMutex);
455 SuspensionChangeOngoing.Set(true);
456 pPendingRegionResumption = pRegion;
457 SuspensionChangeOngoing.WaitAndUnlockIf(true);
458 }
459 dmsg(2,("EngineBase: Region %x resumed.\n",pRegion));
460 }
461
462 virtual void ResetSuspendedRegions() {
463 SuspendedRegions.clear();
464 iPendingStreamDeletions = 0;
465 pPendingRegionSuspension = pPendingRegionResumption = NULL;
466 SuspensionChangeOngoing.Set(false);
467 }
468
469 /**
470 * Called by the engine's (audio) thread once per cycle to process requests
471 * from the outer world to suspend or resume a given @c gig::Region .
472 */
473 virtual void ProcessSuspensionsChanges() {
474 // process request for suspending one region
475 if (pPendingRegionSuspension) {
476 // kill all voices on all engine channels that use this region
477 for (int iChannel = 0; iChannel < engineChannels.size(); iChannel++) {
478 EngineChannelBase<V, R, I>* pEngineChannel =
479 static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannel]);
480 SuspensionVoiceHandler handler(pPendingRegionSuspension);
481 pEngineChannel->ProcessActiveVoices(&handler);
482 iPendingStreamDeletions += handler.PendingStreamDeletions;
483 }
484 // make sure the region is not yet on the list
485 bool bAlreadySuspended = false;
486 RootRegionIterator iter = SuspendedRegions.first();
487 RootRegionIterator end = SuspendedRegions.end();
488 for (; iter != end; ++iter) { // iterate through all suspended regions
489 if (*iter == pPendingRegionSuspension) { // found
490 bAlreadySuspended = true;
491 dmsg(1,("EngineBase: attempt to suspend an already suspended region !!!\n"));
492 break;
493 }
494 }
495 if (!bAlreadySuspended) {
496 // put the region on the list of suspended regions
497 RootRegionIterator iter = SuspendedRegions.allocAppend();
498 if (iter) {
499 *iter = pPendingRegionSuspension;
500 } else std::cerr << "EngineBase: Could not suspend Region, list is full. This is a bug!!!\n" << std::flush;
501 }
502 // free request slot for next caller (and to make sure that
503 // we're not going to process the same request in the next cycle)
504 pPendingRegionSuspension = NULL;
505 // if no disk stream deletions are pending, awaken other side, as
506 // we're done in this case
507 if (!iPendingStreamDeletions) SuspensionChangeOngoing.Set(false);
508 }
509
510 // process request for resuming one region
511 if (pPendingRegionResumption) {
512 // remove region from the list of suspended regions
513 RootRegionIterator iter = SuspendedRegions.first();
514 RootRegionIterator end = SuspendedRegions.end();
515 for (; iter != end; ++iter) { // iterate through all suspended regions
516 if (*iter == pPendingRegionResumption) { // found
517 SuspendedRegions.free(iter);
518 break; // done
519 }
520 }
521 // free request slot for next caller
522 pPendingRegionResumption = NULL;
523 // awake other side as we're done
524 SuspensionChangeOngoing.Set(false);
525 }
526 }
527
528 /**
529 * Called by the engine's (audio) thread once per cycle to check if
530 * streams of voices that were killed due to suspension request have
531 * finally really been deleted by the disk thread.
532 */
533 virtual void ProcessPendingStreamDeletions() {
534 if (!iPendingStreamDeletions) return;
535 //TODO: or shall we better store a list with stream handles instead of a scalar amount of streams to be deleted? might be safer
536 while (
537 iPendingStreamDeletions &&
538 pDiskThread->AskForDeletedStream() != Stream::INVALID_HANDLE
539 ) iPendingStreamDeletions--;
540 // just for safety ...
541 while (pDiskThread->AskForDeletedStream() != Stream::INVALID_HANDLE);
542 // now that all disk streams are deleted, awake other side as
543 // we're finally done with suspending the requested region
544 if (!iPendingStreamDeletions) SuspensionChangeOngoing.Set(false);
545 }
546
547 /**
548 * Returns @c true if the given region is currently set to be suspended
549 * from being used, @c false otherwise.
550 */
551 virtual bool RegionSuspended(RR* pRegion) {
552 if (SuspendedRegions.isEmpty()) return false;
553 //TODO: or shall we use a sorted container instead of the RTList? might be faster ... or trivial ;-)
554 RootRegionIterator iter = SuspendedRegions.first();
555 RootRegionIterator end = SuspendedRegions.end();
556 for (; iter != end; ++iter) // iterate through all suspended regions
557 if (*iter == pRegion) return true;
558 return false;
559 }
560
561 // implementation of abstract method derived from class 'LinuxSampler::RegionPools'
562 virtual Pool<R*>* GetRegionPool(int index) {
563 if (index < 0 || index > 1) throw Exception("Index out of bounds");
564 return pRegionPool[index];
565 }
566
567 // implementation of abstract method derived from class 'LinuxSampler::VoicePool'
568 virtual Pool<V>* GetVoicePool() { return pVoicePool; }
569
570 D* GetDiskThread() { return pDiskThread; }
571
572 //friend class EngineChannelBase<V, R, I>;
573
574 static IM instruments;
575
576 protected:
577 class SuspensionVoiceHandler : public MidiKeyboardManager<V>::VoiceHandler {
578 public:
579 int PendingStreamDeletions;
580 RR* pPendingRegionSuspension;
581
582 SuspensionVoiceHandler(RR* pPendingRegionSuspension) {
583 PendingStreamDeletions = 0;
584 this->pPendingRegionSuspension = pPendingRegionSuspension;
585 }
586
587 virtual bool Process(MidiKey* pMidiKey) OVERRIDE {
588 VoiceIterator itVoice = pMidiKey->pActiveVoices->first();
589 // if current key is not associated with this region, skip this key
590 if (itVoice->GetRegion()->GetParent() != pPendingRegionSuspension) return false;
591
592 return true;
593 }
594
595 virtual void Process(VoiceIterator& itVoice) OVERRIDE {
596 // request a notification from disk thread side for stream deletion
597 const Stream::Handle hStream = itVoice->KillImmediately(true);
598 if (hStream != Stream::INVALID_HANDLE) { // voice actually used a stream
599 PendingStreamDeletions++;
600 }
601 //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
602 }
603 };
604
605 Pool<R*>* pRegionPool[2]; ///< Double buffered pool, used by the engine channels to keep track of regions in use.
606 int MinFadeOutSamples; ///< The number of samples needed to make an instant fade out (e.g. for voice stealing) without leading to clicks.
607 D* pDiskThread;
608
609 int ActiveVoiceCountTemp; ///< number of currently active voices (for internal usage, will be used for incrementation)
610 VoiceIterator itLastStolenVoice; ///< Only for voice stealing: points to the last voice which was theft in current audio fragment, NULL otherwise.
611 RTList<uint>::Iterator iuiLastStolenKey; ///< Only for voice stealing: key number of last key on which the last voice was theft in current audio fragment, NULL otherwise.
612 EngineChannelBase<V, R, I>* pLastStolenChannel; ///< Only for voice stealing: points to the engine channel on which the previous voice was stolen in this audio fragment.
613 VoiceIterator itLastStolenVoiceGlobally; ///< Same as itLastStolenVoice, but engine globally
614 RTList<uint>::Iterator iuiLastStolenKeyGlobally; ///< Same as iuiLastStolenKey, but engine globally
615 RTList<Event>* pVoiceStealingQueue; ///< All voice-launching events which had to be postponed due to free voice shortage.
616 Mutex ResetInternalMutex; ///< Mutex to protect the ResetInternal function for concurrent usage (e.g. by the lscp and instrument loader threads).
617 int iMaxDiskStreams;
618
619 /**
620 * Dispatch and handle all events in this audio fragment for the given
621 * engine channel.
622 *
623 * @param pEngineChannel - engine channel on which events should be
624 * processed
625 * @param Samples - amount of sample points to be processed in
626 * this audio fragment cycle
627 */
628 void ProcessEvents(EngineChannel* pEngineChannel, uint Samples) {
629 // get all events from the engine channels's input event queue which belong to the current fragment
630 // (these are the common events like NoteOn, NoteOff, ControlChange, etc.)
631 AbstractEngineChannel* pChannel = static_cast<AbstractEngineChannel*>(pEngineChannel);
632 pChannel->ImportEvents(Samples);
633
634 // if a valid real-time instrument script is loaded, pre-process
635 // the event list by running the script now, since the script
636 // might filter events or add new ones for this cycle
637 if (pChannel->script.bHasValidScript) {
638 // resume any suspended script executions still hanging
639 // around of previous audio fragment cycles
640 for (RTList<ScriptEvent>::Iterator itEvent = pChannel->pScriptEvents->first(),
641 end = pChannel->pScriptEvents->end(); itEvent != end; ++itEvent)
642 {
643 ResumeScriptEvent(pChannel, itEvent); //TODO: implement support for actual suspension time (i.e. passed to a script's wait() function call)
644 }
645
646 // spawn new script executions for the new MIDI events of
647 // this audio fragment cycle
648 for (RTList<Event>::Iterator itEvent = pChannel->pEvents->first(),
649 end = pChannel->pEvents->end(); itEvent != end; ++itEvent)
650 {
651 switch (itEvent->Type) {
652 case Event::type_note_on:
653 if (pChannel->script.handlerNote)
654 ProcessEventByScript(pChannel, itEvent, pChannel->script.handlerNote);
655 break;
656 case Event::type_note_off:
657 if (pChannel->script.handlerRelease)
658 ProcessEventByScript(pChannel, itEvent, pChannel->script.handlerRelease);
659 break;
660 case Event::type_control_change:
661 case Event::type_channel_pressure:
662 case Event::type_pitchbend:
663 if (pChannel->script.handlerController)
664 ProcessEventByScript(pChannel, itEvent, pChannel->script.handlerController);
665 break;
666 case Event::type_note_pressure:
667 //TODO: ...
668 break;
669 }
670 }
671 }
672
673 // now process all events regularly
674 {
675 RTList<Event>::Iterator itEvent = pChannel->pEvents->first();
676 RTList<Event>::Iterator end = pChannel->pEvents->end();
677 for (; itEvent != end; ++itEvent) {
678 switch (itEvent->Type) {
679 case Event::type_note_on:
680 dmsg(5,("Engine: Note on received\n"));
681 ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent);
682 break;
683 case Event::type_note_off:
684 dmsg(5,("Engine: Note off received\n"));
685 ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent);
686 break;
687 case Event::type_control_change:
688 dmsg(5,("Engine: MIDI CC received\n"));
689 ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent);
690 break;
691 case Event::type_channel_pressure:
692 dmsg(5,("Engine: MIDI Chan. Pressure received\n"));
693 ProcessChannelPressure((EngineChannel*)itEvent->pEngineChannel, itEvent);
694 break;
695 case Event::type_note_pressure:
696 dmsg(5,("Engine: MIDI Note Pressure received\n"));
697 ProcessPolyphonicKeyPressure((EngineChannel*)itEvent->pEngineChannel, itEvent);
698 break;
699 case Event::type_pitchbend:
700 dmsg(5,("Engine: Pitchbend received\n"));
701 ProcessPitchbend(static_cast<AbstractEngineChannel*>(itEvent->pEngineChannel), itEvent);
702 break;
703 }
704 }
705 }
706
707 // reset voice stealing for the next engine channel (or next audio fragment)
708 itLastStolenVoice = VoiceIterator();
709 itLastStolenVoiceGlobally = VoiceIterator();
710 iuiLastStolenKey = RTList<uint>::Iterator();
711 iuiLastStolenKeyGlobally = RTList<uint>::Iterator();
712 pLastStolenChannel = NULL;
713 }
714
715 /** @brief Call instrument script's event handler for this event.
716 *
717 * Causes a new execution instance of the currently loaded real-time
718 * instrument script's event handler (callback) to be spawned for
719 * the given MIDI event.
720 *
721 * @param pChannel - engine channel on which the MIDI event occured
722 * @param itEvent - MIDI event that causes this new script execution
723 * @param pEventHandler - script's event handler to be executed
724 */
725 void ProcessEventByScript(AbstractEngineChannel* pChannel, RTList<Event>::Iterator& itEvent, VMEventHandler* pEventHandler) {
726 RTList<ScriptEvent>::Iterator itScriptEvent =
727 pChannel->pScriptEvents->allocAppend();
728
729 if (!itScriptEvent) return; // no free script event left for execution
730
731 // fill the list of script handlers to be executed by this event
732 int i = 0;
733 if (pChannel->script.handlerInit)
734 itScriptEvent->handlers[i++] = pChannel->script.handlerInit;
735 itScriptEvent->handlers[i++] = pEventHandler; // actual event handler (i.e. note, controller)
736 itScriptEvent->handlers[i] = NULL; // NULL termination of list
737
738 // initialize/reset other members
739 itScriptEvent->cause = *itEvent;
740 itScriptEvent->currentHandler = 0;
741 itScriptEvent->executionSlices = 0;
742
743 // run script handler(s)
744 VMExecStatus_t res = pScriptVM->exec(
745 pChannel->script.parserContext, &*itScriptEvent
746 );
747
748 // in case the script was suspended, keep it on the allocated
749 // ScriptEvent list to be continued on the next audio cycle,
750 // otherwise if execution has been finished, free it for a new
751 // future script event to be triggered from start
752 if (!(res & VM_EXEC_SUSPENDED))
753 pChannel->pScriptEvents->free(itScriptEvent);
754 }
755
756 /** @brief Resume execution of instrument script.
757 *
758 * Will be called to resume execution of a real-time instrument
759 * script event which has been suspended in a previous audio
760 * fragment cycle.
761 *
762 * Script execution might be suspended for various reasons. Usually
763 * a script will be suspended if the script called the built-in
764 * "wait()" function, but it might also be suspended automatically
765 * if the script took too much execution time in an audio fragment
766 * cycle. So in the latter case automatic suspension is performed in
767 * order to avoid harm for the sampler's overall real-time
768 * requirements.
769 *
770 * @param pChannel - engine channel this script is running for
771 * @param itScriptEvent - script execution that shall be resumed
772 */
773 void ResumeScriptEvent(AbstractEngineChannel* pChannel, RTList<ScriptEvent>::Iterator& itScriptEvent) {
774 // run script
775 VMExecStatus_t res = pScriptVM->exec(
776 pChannel->script.parserContext, &*itScriptEvent
777 );
778 // in case the script was again suspended, keep it on the allocated
779 // ScriptEvent list to be continued on the next audio cycle,
780 // otherwise if execution has been finished, free it for a new
781 // future script event to be triggered from start
782 if (!(res & VM_EXEC_SUSPENDED))
783 pChannel->pScriptEvents->free(itScriptEvent);
784 }
785
786 /**
787 * Will be called by LaunchVoice() method in case there are no free
788 * voices left. This method will select and kill one old voice for
789 * voice stealing and postpone the note-on event until the selected
790 * voice actually died.
791 *
792 * @param pEngineChannel - engine channel on which this event occured on
793 * @param itNoteOnEvent - key, velocity and time stamp of the event
794 * @returns 0 on success, a value < 0 if no active voice could be picked for voice stealing
795 */
796 int StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
797 if (VoiceSpawnsLeft <= 0) {
798 dmsg(1,("Max. voice thefts per audio fragment reached (you may raise CONFIG_MAX_VOICES).\n"));
799 return -1;
800 }
801
802 EngineChannelBase<V, R, I>* pEngineChn = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
803
804 if (!pEventPool->poolIsEmpty()) {
805
806 if(!pEngineChn->StealVoice(itNoteOnEvent, &itLastStolenVoice, &iuiLastStolenKey)) {
807 --VoiceSpawnsLeft;
808 return 0;
809 }
810
811 // if we couldn't steal a voice from the same engine channel then
812 // steal oldest voice on the oldest key from any other engine channel
813 // (the smaller engine channel number, the higher priority)
814 EngineChannelBase<V, R, I>* pSelectedChannel;
815 int iChannelIndex;
816 VoiceIterator itSelectedVoice;
817
818 // select engine channel
819 if (pLastStolenChannel) {
820 pSelectedChannel = pLastStolenChannel;
821 iChannelIndex = pSelectedChannel->iEngineIndexSelf;
822 } else { // pick the engine channel followed by this engine channel
823 iChannelIndex = (pEngineChn->iEngineIndexSelf + 1) % engineChannels.size();
824 pSelectedChannel = static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannelIndex]);
825 }
826
827 // if we already stole in this fragment, try to proceed on same key
828 if (this->itLastStolenVoiceGlobally) {
829 itSelectedVoice = this->itLastStolenVoiceGlobally;
830 do {
831 ++itSelectedVoice;
832 } while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle
833 }
834
835 #if CONFIG_DEVMODE
836 EngineChannel* pBegin = pSelectedChannel; // to detect endless loop
837 #endif // CONFIG_DEVMODE
838
839 // did we find a 'stealable' voice?
840 if (itSelectedVoice && itSelectedVoice->IsStealable()) {
841 // remember which voice we stole, so we can simply proceed on next voice stealing
842 this->itLastStolenVoiceGlobally = itSelectedVoice;
843 } else while (true) { // iterate through engine channels
844 // get (next) oldest key
845 RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKeyGlobally) ? ++this->iuiLastStolenKeyGlobally : pSelectedChannel->pActiveKeys->first();
846 this->iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); // to prevent endless loop (see line above)
847 while (iuiSelectedKey) {
848 MidiKey* pSelectedKey = &pSelectedChannel->pMIDIKeyInfo[*iuiSelectedKey];
849 itSelectedVoice = pSelectedKey->pActiveVoices->first();
850 // proceed iterating if voice was created in this fragment cycle
851 while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice;
852 // found a "stealable" voice ?
853 if (itSelectedVoice && itSelectedVoice->IsStealable()) {
854 // remember which voice on which key on which engine channel we stole, so we can simply proceed on next voice stealing
855 this->iuiLastStolenKeyGlobally = iuiSelectedKey;
856 this->itLastStolenVoiceGlobally = itSelectedVoice;
857 this->pLastStolenChannel = pSelectedChannel;
858 goto stealable_voice_found; // selection succeeded
859 }
860 ++iuiSelectedKey; // get next key on current engine channel
861 }
862 // get next engine channel
863 iChannelIndex = (iChannelIndex + 1) % engineChannels.size();
864 pSelectedChannel = static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannelIndex]);
865
866 #if CONFIG_DEVMODE
867 if (pSelectedChannel == pBegin) {
868 dmsg(1,("FATAL ERROR: voice stealing endless loop!\n"));
869 dmsg(1,("VoiceSpawnsLeft=%d.\n", VoiceSpawnsLeft));
870 dmsg(1,("Exiting.\n"));
871 exit(-1);
872 }
873 #endif // CONFIG_DEVMODE
874 }
875
876 // jump point if a 'stealable' voice was found
877 stealable_voice_found:
878
879 #if CONFIG_DEVMODE
880 if (!itSelectedVoice->IsActive()) {
881 dmsg(1,("EngineBase: ERROR, tried to steal a voice which was not active !!!\n"));
882 return -1;
883 }
884 #endif // CONFIG_DEVMODE
885
886 // now kill the selected voice
887 itSelectedVoice->Kill(itNoteOnEvent);
888
889 --VoiceSpawnsLeft;
890
891 return 0; // success
892 }
893 else {
894 dmsg(1,("Event pool emtpy!\n"));
895 return -1;
896 }
897 }
898
899 void HandleInstrumentChanges() {
900 bool instrumentChanged = false;
901 for (int i = 0; i < engineChannels.size(); i++) {
902 EngineChannelBase<V, R, I>* pEngineChannel =
903 static_cast<EngineChannelBase<V, R, I>*>(engineChannels[i]);
904
905 // as we're going to (carefully) write some status to the
906 // synchronized struct, we cast away the const
907 InstrumentChangeCmd<R, I>& cmd =
908 const_cast<InstrumentChangeCmd<R, I>&>(pEngineChannel->InstrumentChangeCommandReader.Lock());
909
910 pEngineChannel->pRegionsInUse = cmd.pRegionsInUse;
911 pEngineChannel->pRegionsInUse->clear();
912
913 if (cmd.bChangeInstrument) {
914 // change instrument
915 dmsg(5,("Engine: instrument change command received\n"));
916 cmd.bChangeInstrument = false;
917 pEngineChannel->pInstrument = cmd.pInstrument;
918 instrumentChanged = true;
919
920 pEngineChannel->MarkAllActiveVoicesAsOrphans();
921 }
922 }
923
924 if (instrumentChanged) {
925 //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
926 ResetSuspendedRegions();
927 }
928 }
929
930 /**
931 * Render all 'normal' voices (that is voices which were not stolen in
932 * this fragment) on the given engine channel.
933 *
934 * @param pEngineChannel - engine channel on which audio should be
935 * rendered
936 * @param Samples - amount of sample points to be rendered in
937 * this audio fragment cycle
938 */
939 void RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples) {
940 #if !CONFIG_PROCESS_MUTED_CHANNELS
941 if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted
942 #endif
943
944 EngineChannelBase<V, R, I>* pChannel =
945 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
946 pChannel->RenderActiveVoices(Samples);
947
948 ActiveVoiceCountTemp += pEngineChannel->GetVoiceCount();
949 }
950
951 /**
952 * Render all stolen voices (only voices which were stolen in this
953 * fragment) on the given engine channel. Stolen voices are rendered
954 * after all normal voices have been rendered; this is needed to render
955 * audio of those voices which were selected for voice stealing until
956 * the point were the stealing (that is the take over of the voice)
957 * actually happened.
958 *
959 * @param pEngineChannel - engine channel on which audio should be
960 * rendered
961 * @param Samples - amount of sample points to be rendered in
962 * this audio fragment cycle
963 */
964 void RenderStolenVoices(uint Samples) {
965 RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first();
966 RTList<Event>::Iterator end = pVoiceStealingQueue->end();
967 for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {
968 EngineChannelBase<V, R, I>* pEngineChannel =
969 static_cast<EngineChannelBase<V, R, I>*>(itVoiceStealEvent->pEngineChannel);;
970 if (!pEngineChannel->pInstrument) continue; // ignore if no instrument loaded
971 PoolVoiceIterator itNewVoice =
972 LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false, false);
973 if (itNewVoice) {
974 itNewVoice->Render(Samples);
975 if (itNewVoice->IsActive()) { // still active
976 *(pEngineChannel->pRegionsInUse->allocAppend()) = itNewVoice->GetRegion();
977 ActiveVoiceCountTemp++;
978 pEngineChannel->SetVoiceCount(pEngineChannel->GetVoiceCount() + 1);
979
980 if (itNewVoice->PlaybackState == Voice::playback_state_disk) {
981 if (itNewVoice->DiskStreamRef.State != Stream::state_unused) {
982 pEngineChannel->SetDiskStreamCount(pEngineChannel->GetDiskStreamCount() + 1);
983 }
984 }
985 } else { // voice reached end, is now inactive
986 pEngineChannel->FreeVoice(itNewVoice); // remove voice from the list of active voices
987 }
988 }
989 else dmsg(1,("EngineBase: ERROR, voice stealing didn't work out!\n"));
990
991 // we need to clear the key's event list explicitly here in case key was never active
992 MidiKey* pKey = &pEngineChannel->pMIDIKeyInfo[itVoiceStealEvent->Param.Note.Key];
993 pKey->VoiceTheftsQueued--;
994 if (!pKey->Active && !pKey->VoiceTheftsQueued) pKey->pEvents->clear();
995 }
996 }
997
998 /**
999 * Free all keys which have turned inactive in this audio fragment, from
1000 * the list of active keys and clear all event lists on that engine
1001 * channel.
1002 *
1003 * @param pEngineChannel - engine channel to cleanup
1004 */
1005 void PostProcess(EngineChannel* pEngineChannel) {
1006 EngineChannelBase<V, R, I>* pChannel =
1007 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1008 pChannel->FreeAllInactiveKyes();
1009
1010 // empty the engine channel's own event lists
1011 pChannel->ClearEventLists();
1012 }
1013
1014 /**
1015 * Process MIDI control change events with hard coded behavior,
1016 * that is controllers whose behavior is defined independently
1017 * of the actual sampler engine type and instrument.
1018 *
1019 * @param pEngineChannel - engine channel on which the MIDI CC event was received
1020 * @param itControlChangeEvent - the actual MIDI CC event
1021 */
1022 void ProcessHardcodedControllers (
1023 EngineChannel* pEngineChannel,
1024 Pool<Event>::Iterator& itControlChangeEvent
1025 ) {
1026 EngineChannelBase<V, R, I>* pChannel =
1027 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1028
1029 switch (itControlChangeEvent->Param.CC.Controller) {
1030 case 5: { // portamento time
1031 pChannel->PortamentoTime = (float) itControlChangeEvent->Param.CC.Value / 127.0f * (float) CONFIG_PORTAMENTO_TIME_MAX + (float) CONFIG_PORTAMENTO_TIME_MIN;
1032 break;
1033 }
1034 case 6: { // data entry (currently only used for RPN and NRPN controllers)
1035 //dmsg(1,("DATA ENTRY %d\n", itControlChangeEvent->Param.CC.Value));
1036 if (pChannel->GetMidiRpnController() >= 0) { // RPN controller number was sent previously ...
1037 dmsg(4,("Guess it's an RPN ...\n"));
1038 if (pChannel->GetMidiRpnController() == 2) { // coarse tuning in half tones
1039 int transpose = (int) itControlChangeEvent->Param.CC.Value - 64;
1040 // limit to +- two octaves for now
1041 transpose = RTMath::Min(transpose, 24);
1042 transpose = RTMath::Max(transpose, -24);
1043 pChannel->GlobalTranspose = transpose;
1044 // workaround, so we won't have hanging notes
1045 pChannel->ReleaseAllVoices(itControlChangeEvent);
1046 }
1047 // to prevent other MIDI CC #6 messages to be misenterpreted as RPN controller data
1048 pChannel->ResetMidiRpnController();
1049 } else if (pChannel->GetMidiNrpnController() >= 0) { // NRPN controller number was sent previously ...
1050 dmsg(4,("Guess it's an NRPN ...\n"));
1051 const int NrpnCtrlMSB = pChannel->GetMidiNrpnController() >> 8;
1052 const int NrpnCtrlLSB = pChannel->GetMidiNrpnController() & 0xff;
1053 dmsg(4,("NRPN MSB=%d LSB=%d Data=%d\n", NrpnCtrlMSB, NrpnCtrlLSB, itControlChangeEvent->Param.CC.Value));
1054 switch (NrpnCtrlMSB) {
1055 case 0x1a: { // volume level of note (Roland GS NRPN)
1056 const uint note = NrpnCtrlLSB;
1057 const uint vol = itControlChangeEvent->Param.CC.Value;
1058 dmsg(4,("Note Volume NRPN received (note=%d,vol=%d).\n", note, vol));
1059 if (note < 128 && vol < 128)
1060 pChannel->pMIDIKeyInfo[note].Volume = VolumeCurve[vol];
1061 break;
1062 }
1063 case 0x1c: { // panpot of note (Roland GS NRPN)
1064 const uint note = NrpnCtrlLSB;
1065 const uint pan = itControlChangeEvent->Param.CC.Value;
1066 dmsg(4,("Note Pan NRPN received (note=%d,pan=%d).\n", note, pan));
1067 if (note < 128 && pan < 128) {
1068 pChannel->pMIDIKeyInfo[note].PanLeft = PanCurve[128 - pan];
1069 pChannel->pMIDIKeyInfo[note].PanRight = PanCurve[pan];
1070 }
1071 break;
1072 }
1073 case 0x1d: { // reverb send of note (Roland GS NRPN)
1074 const uint note = NrpnCtrlLSB;
1075 const float reverb = float(itControlChangeEvent->Param.CC.Value) / 127.0f;
1076 dmsg(4,("Note Reverb Send NRPN received (note=%d,send=%d).\n", note, reverb));
1077 if (note < 128)
1078 pChannel->pMIDIKeyInfo[note].ReverbSend = reverb;
1079 break;
1080 }
1081 case 0x1e: { // chorus send of note (Roland GS NRPN)
1082 const uint note = NrpnCtrlLSB;
1083 const float chorus = float(itControlChangeEvent->Param.CC.Value) / 127.0f;
1084 dmsg(4,("Note Chorus Send NRPN received (note=%d,send=%d).\n", note, chorus));
1085 if (note < 128)
1086 pChannel->pMIDIKeyInfo[note].ChorusSend = chorus;
1087 break;
1088 }
1089 }
1090 // to prevent other MIDI CC #6 messages to be misenterpreted as NRPN controller data
1091 pChannel->ResetMidiNrpnController();
1092 }
1093 break;
1094 }
1095 case 7: { // volume
1096 //TODO: not sample accurate yet
1097 pChannel->MidiVolume = VolumeCurve[itControlChangeEvent->Param.CC.Value];
1098 pChannel->bStatusChanged = true; // engine channel status has changed, so set notify flag
1099 break;
1100 }
1101 case 10: { // panpot
1102 //TODO: not sample accurate yet
1103 pChannel->iLastPanRequest = itControlChangeEvent->Param.CC.Value;
1104 break;
1105 }
1106 case 64: { // sustain
1107 if (itControlChangeEvent->Param.CC.Value >= 64 && !pChannel->SustainPedal) {
1108 dmsg(4,("DAMPER (RIGHT) PEDAL DOWN\n"));
1109 pChannel->SustainPedal = true;
1110 pChannel->listeners.PreProcessSustainPedalDown();
1111
1112 #if !CONFIG_PROCESS_MUTED_CHANNELS
1113 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1114 pChannel->listeners.PostProcessSustainPedalDown();
1115 return;
1116 }
1117 #endif
1118
1119 pChannel->ProcessSustainPedalDown(itControlChangeEvent);
1120 pChannel->listeners.PostProcessSustainPedalDown();
1121 }
1122 if (itControlChangeEvent->Param.CC.Value < 64 && pChannel->SustainPedal) {
1123 dmsg(4,("DAMPER (RIGHT) PEDAL UP\n"));
1124 pChannel->SustainPedal = false;
1125 pChannel->listeners.PreProcessSustainPedalUp();
1126
1127 #if !CONFIG_PROCESS_MUTED_CHANNELS
1128 if (pChannel->GetMute()) { // skip if sampler channel is muted
1129 pChannel->listeners.PostProcessSustainPedalUp();
1130 return;
1131 }
1132 #endif
1133
1134 pChannel->ProcessSustainPedalUp(itControlChangeEvent);
1135 pChannel->listeners.PostProcessSustainPedalUp();
1136 }
1137 break;
1138 }
1139 case 65: { // portamento on / off
1140 const bool bPortamento = itControlChangeEvent->Param.CC.Value >= 64;
1141 if (bPortamento != pChannel->PortamentoMode)
1142 KillAllVoices(pChannel, itControlChangeEvent);
1143 pChannel->PortamentoMode = bPortamento;
1144 break;
1145 }
1146 case 66: { // sostenuto
1147 if (itControlChangeEvent->Param.CC.Value >= 64 && !pChannel->SostenutoPedal) {
1148 dmsg(4,("SOSTENUTO (CENTER) PEDAL DOWN\n"));
1149 pChannel->SostenutoPedal = true;
1150 pChannel->listeners.PreProcessSostenutoPedalDown();
1151
1152 #if !CONFIG_PROCESS_MUTED_CHANNELS
1153 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1154 pChannel->listeners.PostProcessSostenutoPedalDown();
1155 return;
1156 }
1157 #endif
1158
1159 pChannel->ProcessSostenutoPedalDown();
1160 pChannel->listeners.PostProcessSostenutoPedalDown();
1161 }
1162 if (itControlChangeEvent->Param.CC.Value < 64 && pChannel->SostenutoPedal) {
1163 dmsg(4,("SOSTENUTO (CENTER) PEDAL UP\n"));
1164 pChannel->SostenutoPedal = false;
1165 pChannel->listeners.PreProcessSostenutoPedalUp();
1166
1167 #if !CONFIG_PROCESS_MUTED_CHANNELS
1168 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1169 pChannel->listeners.PostProcessSostenutoPedalUp();
1170 return;
1171 }
1172 #endif
1173
1174 pChannel->ProcessSostenutoPedalUp(itControlChangeEvent);
1175 pChannel->listeners.PostProcessSostenutoPedalUp();
1176 }
1177 break;
1178 }
1179 case 98: { // NRPN controller LSB
1180 dmsg(4,("NRPN LSB %d\n", itControlChangeEvent->Param.CC.Value));
1181 pEngineChannel->SetMidiNrpnControllerLsb(itControlChangeEvent->Param.CC.Value);
1182 break;
1183 }
1184 case 99: { // NRPN controller MSB
1185 dmsg(4,("NRPN MSB %d\n", itControlChangeEvent->Param.CC.Value));
1186 pEngineChannel->SetMidiNrpnControllerMsb(itControlChangeEvent->Param.CC.Value);
1187 break;
1188 }
1189 case 100: { // RPN controller LSB
1190 dmsg(4,("RPN LSB %d\n", itControlChangeEvent->Param.CC.Value));
1191 pEngineChannel->SetMidiRpnControllerLsb(itControlChangeEvent->Param.CC.Value);
1192 break;
1193 }
1194 case 101: { // RPN controller MSB
1195 dmsg(4,("RPN MSB %d\n", itControlChangeEvent->Param.CC.Value));
1196 pEngineChannel->SetMidiRpnControllerMsb(itControlChangeEvent->Param.CC.Value);
1197 break;
1198 }
1199
1200
1201 // Channel Mode Messages
1202
1203 case 120: { // all sound off
1204 KillAllVoices(pEngineChannel, itControlChangeEvent);
1205 break;
1206 }
1207 case 121: { // reset all controllers
1208 pChannel->ResetControllers();
1209 break;
1210 }
1211 case 123: { // all notes off
1212 #if CONFIG_PROCESS_ALL_NOTES_OFF
1213 pChannel->ReleaseAllVoices(itControlChangeEvent);
1214 #endif // CONFIG_PROCESS_ALL_NOTES_OFF
1215 break;
1216 }
1217 case 126: { // mono mode on
1218 if (!pChannel->SoloMode)
1219 KillAllVoices(pEngineChannel, itControlChangeEvent);
1220 pChannel->SoloMode = true;
1221 break;
1222 }
1223 case 127: { // poly mode on
1224 if (pChannel->SoloMode)
1225 KillAllVoices(pEngineChannel, itControlChangeEvent);
1226 pChannel->SoloMode = false;
1227 break;
1228 }
1229 }
1230 }
1231
1232 virtual D* CreateDiskThread() = 0;
1233
1234 /**
1235 * Assigns and triggers a new voice for the respective MIDI key.
1236 *
1237 * @param pEngineChannel - engine channel on which this event occured on
1238 * @param itNoteOnEvent - key, velocity and time stamp of the event
1239 */
1240 virtual void ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
1241 EngineChannelBase<V, R, I>* pChannel =
1242 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1243
1244 //HACK: we should better add the transpose value only to the most mandatory places (like for retrieving the region and calculating the tuning), because otherwise voices will unintendedly survive when changing transpose while playing
1245 int k = itNoteOnEvent->Param.Note.Key + pChannel->GlobalTranspose;
1246 if (k < 0 || k > 127) return; //ignore keys outside the key range
1247
1248 itNoteOnEvent->Param.Note.Key += pChannel->GlobalTranspose;
1249 int vel = itNoteOnEvent->Param.Note.Velocity;
1250
1251 const int key = itNoteOnEvent->Param.Note.Key;
1252 MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];
1253
1254 pChannel->listeners.PreProcessNoteOn(key, vel);
1255 #if !CONFIG_PROCESS_MUTED_CHANNELS
1256 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1257 pChannel->listeners.PostProcessNoteOn(key, vel);
1258 return;
1259 }
1260 #endif
1261
1262 if (!pChannel->pInstrument) {
1263 pChannel->listeners.PostProcessNoteOn(key, vel);
1264 return; // ignore if no instrument loaded
1265 }
1266
1267 // move note on event to the key's own event list
1268 RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);
1269
1270 // if Solo Mode then kill all already active voices
1271 if (pChannel->SoloMode) {
1272 Pool<uint>::Iterator itYoungestKey = pChannel->pActiveKeys->last();
1273 if (itYoungestKey) {
1274 const int iYoungestKey = *itYoungestKey;
1275 const MidiKey* pOtherKey = &pChannel->pMIDIKeyInfo[iYoungestKey];
1276 if (pOtherKey->Active) {
1277 // get final portamento position of currently active voice
1278 if (pChannel->PortamentoMode) {
1279 VoiceIterator itVoice = pOtherKey->pActiveVoices->last();
1280 if (itVoice) itVoice->UpdatePortamentoPos(itNoteOnEventOnKeyList);
1281 }
1282 // kill all voices on the (other) key
1283 VoiceIterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first();
1284 VoiceIterator end = pOtherKey->pActiveVoices->end();
1285 for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
1286 if (!(itVoiceToBeKilled->Type & Voice::type_release_trigger))
1287 itVoiceToBeKilled->Kill(itNoteOnEventOnKeyList);
1288 }
1289 }
1290 }
1291 // set this key as 'currently active solo key'
1292 pChannel->SoloKey = key;
1293 }
1294
1295 pChannel->ProcessKeySwitchChange(key);
1296
1297 pKey->KeyPressed = true; // the MIDI key was now pressed down
1298 pKey->Velocity = itNoteOnEventOnKeyList->Param.Note.Velocity;
1299 pKey->NoteOnTime = FrameTime + itNoteOnEventOnKeyList->FragmentPos(); // will be used to calculate note length
1300
1301 // cancel release process of voices on this key if needed
1302 if (pKey->Active && !pChannel->SustainPedal) {
1303 RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend();
1304 if (itCancelReleaseEvent) {
1305 *itCancelReleaseEvent = *itNoteOnEventOnKeyList; // copy event
1306 itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type
1307 }
1308 else dmsg(1,("Event pool emtpy!\n"));
1309 }
1310
1311 TriggerNewVoices(pEngineChannel, itNoteOnEventOnKeyList);
1312
1313 // if neither a voice was spawned or postponed then remove note on event from key again
1314 if (!pKey->Active && !pKey->VoiceTheftsQueued)
1315 pKey->pEvents->free(itNoteOnEventOnKeyList);
1316
1317 if (!pChannel->SoloMode || pChannel->PortamentoPos < 0.0f) pChannel->PortamentoPos = (float) key;
1318 if (pKey->pRoundRobinIndex) {
1319 (*pKey->pRoundRobinIndex)++; // counter specific for the key or region
1320 pChannel->RoundRobinIndex++; // common counter for the channel
1321 }
1322 pChannel->listeners.PostProcessNoteOn(key, vel);
1323 }
1324
1325 /**
1326 * Allocate and trigger new voice(s) for the key.
1327 */
1328 virtual void TriggerNewVoices (
1329 EngineChannel* pEngineChannel,
1330 RTList<Event>::Iterator& itNoteOnEvent,
1331 bool HandleKeyGroupConflicts = true
1332 ) = 0;
1333
1334 /**
1335 * Allocate and trigger release voice(s) for the key.
1336 */
1337 virtual void TriggerReleaseVoices (
1338 EngineChannel* pEngineChannel,
1339 RTList<Event>::Iterator& itNoteOffEvent
1340 ) = 0;
1341
1342 /**
1343 * Releases the voices on the given key if sustain pedal is not pressed.
1344 * If sustain is pressed, the release of the note will be postponed until
1345 * sustain pedal will be released or voice turned inactive by itself (e.g.
1346 * due to completion of sample playback).
1347 *
1348 * @param pEngineChannel - engine channel on which this event occured on
1349 * @param itNoteOffEvent - key, velocity and time stamp of the event
1350 */
1351 virtual void ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) {
1352 EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1353
1354 int k = itNoteOffEvent->Param.Note.Key + pChannel->GlobalTranspose;
1355 if (k < 0 || k > 127) return; //ignore keys outside the key range
1356
1357 //HACK: we should better add the transpose value only to the most mandatory places (like for retrieving the region and calculating the tuning), because otherwise voices will unintendedly survive when changing transpose while playing
1358 itNoteOffEvent->Param.Note.Key += pChannel->GlobalTranspose;
1359 int vel = itNoteOffEvent->Param.Note.Velocity;
1360
1361 const int iKey = itNoteOffEvent->Param.Note.Key;
1362 MidiKey* pKey = &pChannel->pMIDIKeyInfo[iKey];
1363
1364 pChannel->listeners.PreProcessNoteOff(iKey, vel);
1365
1366 #if !CONFIG_PROCESS_MUTED_CHANNELS
1367 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1368 pChannel->listeners.PostProcessNoteOff(iKey, vel);
1369 return;
1370 }
1371 #endif
1372
1373 pKey->KeyPressed = false; // the MIDI key was now released
1374
1375 // move event to the key's own event list
1376 RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);
1377
1378 bool bShouldRelease = pKey->Active && pChannel->ShouldReleaseVoice(itNoteOffEventOnKeyList->Param.Note.Key);
1379
1380 // in case Solo Mode is enabled, kill all voices on this key and respawn a voice on the highest pressed key (if any)
1381 if (pChannel->SoloMode && pChannel->pInstrument) { //TODO: this feels like too much code just for handling solo mode :P
1382 bool bOtherKeysPressed = false;
1383 if (iKey == pChannel->SoloKey) {
1384 pChannel->SoloKey = -1;
1385 // if there's still a key pressed down, respawn a voice (group) on the highest key
1386 for (int i = 127; i > 0; i--) {
1387 MidiKey* pOtherKey = &pChannel->pMIDIKeyInfo[i];
1388 if (pOtherKey->KeyPressed) {
1389 bOtherKeysPressed = true;
1390 // make the other key the new 'currently active solo key'
1391 pChannel->SoloKey = i;
1392 // get final portamento position of currently active voice
1393 if (pChannel->PortamentoMode) {
1394 VoiceIterator itVoice = pKey->pActiveVoices->first();
1395 if (itVoice) itVoice->UpdatePortamentoPos(itNoteOffEventOnKeyList);
1396 }
1397 // create a pseudo note on event
1398 RTList<Event>::Iterator itPseudoNoteOnEvent = pOtherKey->pEvents->allocAppend();
1399 if (itPseudoNoteOnEvent) {
1400 // copy event
1401 *itPseudoNoteOnEvent = *itNoteOffEventOnKeyList;
1402 // transform event to a note on event
1403 itPseudoNoteOnEvent->Type = Event::type_note_on;
1404 itPseudoNoteOnEvent->Param.Note.Key = i;
1405 itPseudoNoteOnEvent->Param.Note.Velocity = pOtherKey->Velocity;
1406 // allocate and trigger new voice(s) for the other key
1407 TriggerNewVoices(pChannel, itPseudoNoteOnEvent, false);
1408 // if neither a voice was spawned or postponed then remove note on event from key again
1409 if (!pOtherKey->Active && !pOtherKey->VoiceTheftsQueued)
1410 pOtherKey->pEvents->free(itPseudoNoteOnEvent);
1411
1412 } else dmsg(1,("Could not respawn voice, no free event left\n"));
1413 break; // done
1414 }
1415 }
1416 }
1417 if (bOtherKeysPressed) {
1418 if (pKey->Active) { // kill all voices on this key
1419 bShouldRelease = false; // no need to release, as we kill it here
1420 VoiceIterator itVoiceToBeKilled = pKey->pActiveVoices->first();
1421 VoiceIterator end = pKey->pActiveVoices->end();
1422 for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
1423 if (!(itVoiceToBeKilled->Type & Voice::type_release_trigger))
1424 itVoiceToBeKilled->Kill(itNoteOffEventOnKeyList);
1425 }
1426 }
1427 } else pChannel->PortamentoPos = -1.0f;
1428 }
1429
1430 // if no solo mode (the usual case) or if solo mode and no other key pressed, then release voices on this key if needed
1431 if (bShouldRelease) {
1432 itNoteOffEventOnKeyList->Type = Event::type_release; // transform event type
1433
1434 // spawn release triggered voice(s) if needed
1435 if (pKey->ReleaseTrigger && pChannel->pInstrument) {
1436 TriggerReleaseVoices(pChannel, itNoteOffEventOnKeyList);
1437 pKey->ReleaseTrigger = false;
1438 }
1439 }
1440
1441 // if neither a voice was spawned or postponed on this key then remove note off event from key again
1442 if (!pKey->Active && !pKey->VoiceTheftsQueued)
1443 pKey->pEvents->free(itNoteOffEventOnKeyList);
1444
1445 pChannel->listeners.PostProcessNoteOff(iKey, vel);
1446 }
1447
1448 /**
1449 * Reset all voices and disk thread and clear input event queue and all
1450 * control and status variables. This method is protected by a mutex.
1451 */
1452 virtual void ResetInternal() {
1453 LockGuard lock(ResetInternalMutex);
1454
1455 // make sure that the engine does not get any sysex messages
1456 // while it's reseting
1457 bool sysexDisabled = MidiInputPort::RemoveSysexListener(this);
1458 SetVoiceCount(0);
1459 ActiveVoiceCountMax = 0;
1460
1461 // reset voice stealing parameters
1462 pVoiceStealingQueue->clear();
1463 itLastStolenVoice = VoiceIterator();
1464 itLastStolenVoiceGlobally = VoiceIterator();
1465 iuiLastStolenKey = RTList<uint>::Iterator();
1466 iuiLastStolenKeyGlobally = RTList<uint>::Iterator();
1467 pLastStolenChannel = NULL;
1468
1469 // reset all voices
1470 for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
1471 iterVoice->Reset();
1472 }
1473 pVoicePool->clear();
1474
1475 // reset disk thread
1476 if (pDiskThread) pDiskThread->Reset();
1477
1478 // delete all input events
1479 pEventQueue->init();
1480 pSysexBuffer->init();
1481 if (sysexDisabled) MidiInputPort::AddSysexListener(this);
1482 }
1483
1484 /**
1485 * Kills all voices on an engine channel as soon as possible. Voices
1486 * won't get into release state, their volume level will be ramped down
1487 * as fast as possible.
1488 *
1489 * @param pEngineChannel - engine channel on which all voices should be killed
1490 * @param itKillEvent - event which caused this killing of all voices
1491 */
1492 virtual void KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent) {
1493 EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1494 int count = pChannel->KillAllVoices(itKillEvent);
1495 VoiceSpawnsLeft -= count; //FIXME: just a temporary workaround, we should check the cause in StealVoice() instead
1496 }
1497
1498 /**
1499 * Allocates and triggers a new voice. This method will usually be
1500 * called by the ProcessNoteOn() method and by the voices itself
1501 * (e.g. to spawn further voices on the same key for layered sounds).
1502 *
1503 * @param pEngineChannel - engine channel on which this event occured on
1504 * @param itNoteOnEvent - key, velocity and time stamp of the event
1505 * @param iLayer - layer index for the new voice (optional - only
1506 * in case of layered sounds of course)
1507 * @param ReleaseTriggerVoice - if new voice is a release triggered voice
1508 * (optional, default = false)
1509 * @param VoiceStealing - if voice stealing should be performed
1510 * when there is no free voice
1511 * (optional, default = true)
1512 * @param HandleKeyGroupConflicts - if voices should be killed due to a
1513 * key group conflict
1514 * @returns pointer to new voice or NULL if there was no free voice or
1515 * if the voice wasn't triggered (for example when no region is
1516 * defined for the given key).
1517 */
1518 virtual PoolVoiceIterator LaunchVoice (
1519 EngineChannel* pEngineChannel,
1520 Pool<Event>::Iterator& itNoteOnEvent,
1521 int iLayer,
1522 bool ReleaseTriggerVoice,
1523 bool VoiceStealing,
1524 bool HandleKeyGroupConflicts
1525 ) = 0;
1526
1527 virtual int GetMinFadeOutSamples() { return MinFadeOutSamples; }
1528
1529 int InitNewVoice (
1530 EngineChannelBase<V, R, I>* pChannel,
1531 R* pRegion,
1532 Pool<Event>::Iterator& itNoteOnEvent,
1533 Voice::type_t VoiceType,
1534 int iLayer,
1535 int iKeyGroup,
1536 bool ReleaseTriggerVoice,
1537 bool VoiceStealing,
1538 typename Pool<V>::Iterator& itNewVoice
1539 ) {
1540 int key = itNoteOnEvent->Param.Note.Key;
1541 typename MidiKeyboardManager<V>::MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];
1542 if (itNewVoice) {
1543 // launch the new voice
1544 if (itNewVoice->Trigger(pChannel, itNoteOnEvent, pChannel->Pitch, pRegion, VoiceType, iKeyGroup) < 0) {
1545 dmsg(4,("Voice not triggered\n"));
1546 pKey->pActiveVoices->free(itNewVoice);
1547 }
1548 else { // on success
1549 --VoiceSpawnsLeft;
1550 if (!pKey->Active) { // mark as active key
1551 pKey->Active = true;
1552 pKey->itSelf = pChannel->pActiveKeys->allocAppend();
1553 *pKey->itSelf = itNoteOnEvent->Param.Note.Key;
1554 }
1555 if (itNewVoice->Type & Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s)
1556 return 0; // success
1557 }
1558 }
1559 else if (VoiceStealing) {
1560 // try to steal one voice
1561 int result = StealVoice(pChannel, itNoteOnEvent);
1562 if (!result) { // voice stolen successfully
1563 // put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died
1564 RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend();
1565 if (itStealEvent) {
1566 *itStealEvent = *itNoteOnEvent; // copy event
1567 itStealEvent->Param.Note.Layer = iLayer;
1568 itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice;
1569 pKey->VoiceTheftsQueued++;
1570 }
1571 else dmsg(1,("Voice stealing queue full!\n"));
1572 }
1573 }
1574
1575 return -1;
1576 }
1577
1578 /**
1579 * Checks whether scale tuning setting has been changed since last
1580 * time this method was called, if yes, it recalculates the pitch
1581 * for all active voices.
1582 */
1583 void ProcessScaleTuningChange() {
1584 const bool changed = ScaleTuningChanged.readAndReset();
1585 if (!changed) return;
1586
1587 for (int i = 0; i < engineChannels.size(); i++) {
1588 EngineChannelBase<V, R, I>* channel =
1589 static_cast<EngineChannelBase<V, R, I>*>(engineChannels[i]);
1590 channel->OnScaleTuningChanged();
1591 }
1592 }
1593
1594 private:
1595 Pool<V>* pVoicePool; ///< Contains all voices that can be activated.
1596 Pool<RR*> SuspendedRegions;
1597 Mutex SuspendedRegionsMutex;
1598 Condition SuspensionChangeOngoing;
1599 RR* pPendingRegionSuspension;
1600 RR* pPendingRegionResumption;
1601 int iPendingStreamDeletions;
1602 };
1603
1604 template <class V, class RR, class R, class D, class IM, class I>
1605 IM EngineBase<V, RR, R, D, IM, I>::instruments;
1606
1607 } // namespace LinuxSampler
1608
1609 #endif /* __LS_ENGINEBASE_H__ */
1610

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