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

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Revision 2594 - (show annotations) (download) (as text)
Thu Jun 5 00:16:25 2014 UTC (5 years, 5 months ago) by schoenebeck
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* ScriptVM (WIP): started to integrate real-time instrument script
  support into the sampler engine implementations. The code is
  shared among all sampler engines, however currently only the gig
  file format supports storing instrument scripts (as LinuxSampler
  extension to the original GigaStudio 4 file format).
* gig engine: Added support for loading instrument scripts from .gig
  files.
* ScriptVM (WIP): Implemented built-in script variables %CC, $CC_NUM,
  $EVENT_NOTE, $EVENT_VELOCITY, $VCC_MONO_AT, $VCC_PITCH_BEND.
* ScriptVM (WIP): Implemented execution of script event handler "init".
* ScriptVM (WIP): Implemented execution of script event handler
  "controller".
* Bumped version (1.0.0.svn42).

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);
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 //TODO: ...
658 break;
659 case Event::type_control_change:
660 case Event::type_channel_pressure:
661 case Event::type_pitchbend:
662 if (pChannel->script.handlerController)
663 ProcessEventByScript(pChannel, itEvent, pChannel->script.handlerController);
664 break;
665 case Event::type_note_pressure:
666 //TODO: ...
667 break;
668 }
669 }
670 }
671
672 // now process all events regularly
673 {
674 RTList<Event>::Iterator itEvent = pChannel->pEvents->first();
675 RTList<Event>::Iterator end = pChannel->pEvents->end();
676 for (; itEvent != end; ++itEvent) {
677 switch (itEvent->Type) {
678 case Event::type_note_on:
679 dmsg(5,("Engine: Note on received\n"));
680 ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent);
681 break;
682 case Event::type_note_off:
683 dmsg(5,("Engine: Note off received\n"));
684 ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent);
685 break;
686 case Event::type_control_change:
687 dmsg(5,("Engine: MIDI CC received\n"));
688 ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent);
689 break;
690 case Event::type_channel_pressure:
691 dmsg(5,("Engine: MIDI Chan. Pressure received\n"));
692 ProcessChannelPressure((EngineChannel*)itEvent->pEngineChannel, itEvent);
693 break;
694 case Event::type_note_pressure:
695 dmsg(5,("Engine: MIDI Note Pressure received\n"));
696 ProcessPolyphonicKeyPressure((EngineChannel*)itEvent->pEngineChannel, itEvent);
697 break;
698 case Event::type_pitchbend:
699 dmsg(5,("Engine: Pitchbend received\n"));
700 ProcessPitchbend(static_cast<AbstractEngineChannel*>(itEvent->pEngineChannel), itEvent);
701 break;
702 }
703 }
704 }
705
706 // reset voice stealing for the next engine channel (or next audio fragment)
707 itLastStolenVoice = VoiceIterator();
708 itLastStolenVoiceGlobally = VoiceIterator();
709 iuiLastStolenKey = RTList<uint>::Iterator();
710 iuiLastStolenKeyGlobally = RTList<uint>::Iterator();
711 pLastStolenChannel = NULL;
712 }
713
714 /** @brief Call instrument script's event handler for this event.
715 *
716 * Causes a new execution instance of the currently loaded real-time
717 * instrument script's event handler (callback) to be spawned for
718 * the given MIDI event.
719 *
720 * @param pChannel - engine channel on which the MIDI event occured
721 * @param itEvent - MIDI event that causes this new script execution
722 * @param pEventHandler - script's event handler to be executed
723 */
724 void ProcessEventByScript(AbstractEngineChannel* pChannel, RTList<Event>::Iterator& itEvent, VMEventHandler* pEventHandler) {
725 RTList<ScriptEvent>::Iterator itScriptEvent =
726 pChannel->pScriptEvents->allocAppend();
727
728 if (!itScriptEvent) return; // no free script event left for execution
729
730 // fill the list of script handlers to be executed by this event
731 int i = 0;
732 if (pChannel->script.handlerInit)
733 itScriptEvent->handlers[i++] = pChannel->script.handlerInit;
734 itScriptEvent->handlers[i++] = pEventHandler; // actual event handler (i.e. note, controller)
735 itScriptEvent->handlers[i] = NULL; // NULL termination of list
736
737 // initialize/reset other members
738 itScriptEvent->cause = *itEvent;
739 itScriptEvent->currentHandler = 0;
740 itScriptEvent->executionSlices = 0;
741
742 // run script handler(s)
743 VMExecStatus_t res = pScriptVM->exec(
744 pChannel->script.parserContext, &*itScriptEvent
745 );
746
747 // in case the script was suspended, keep it on the allocated
748 // ScriptEvent list to be continued on the next audio cycle,
749 // otherwise if execution has been finished, free it for a new
750 // future script event to be triggered from start
751 if (!(res & VM_EXEC_SUSPENDED))
752 pChannel->pScriptEvents->free(itScriptEvent);
753 }
754
755 /** @brief Resume execution of instrument script.
756 *
757 * Will be called to resume execution of a real-time instrument
758 * script event which has been suspended in a previous audio
759 * fragment cycle.
760 *
761 * Script execution might be suspended for various reasons. Usually
762 * a script will be suspended if the script called the built-in
763 * "wait()" function, but it might also be suspended automatically
764 * if the script took too much execution time in an audio fragment
765 * cycle. So in the latter case automatic suspension is performed in
766 * order to avoid harm for the sampler's overall real-time
767 * requirements.
768 *
769 * @param pChannel - engine channel this script is running for
770 * @param itScriptEvent - script execution that shall be resumed
771 */
772 void ResumeScriptEvent(AbstractEngineChannel* pChannel, RTList<ScriptEvent>::Iterator& itScriptEvent) {
773 // run script
774 VMExecStatus_t res = pScriptVM->exec(
775 pChannel->script.parserContext, &*itScriptEvent
776 );
777 // in case the script was again suspended, keep it on the allocated
778 // ScriptEvent list to be continued on the next audio cycle,
779 // otherwise if execution has been finished, free it for a new
780 // future script event to be triggered from start
781 if (!(res & VM_EXEC_SUSPENDED))
782 pChannel->pScriptEvents->free(itScriptEvent);
783 }
784
785 /**
786 * Will be called by LaunchVoice() method in case there are no free
787 * voices left. This method will select and kill one old voice for
788 * voice stealing and postpone the note-on event until the selected
789 * voice actually died.
790 *
791 * @param pEngineChannel - engine channel on which this event occured on
792 * @param itNoteOnEvent - key, velocity and time stamp of the event
793 * @returns 0 on success, a value < 0 if no active voice could be picked for voice stealing
794 */
795 int StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
796 if (VoiceSpawnsLeft <= 0) {
797 dmsg(1,("Max. voice thefts per audio fragment reached (you may raise CONFIG_MAX_VOICES).\n"));
798 return -1;
799 }
800
801 EngineChannelBase<V, R, I>* pEngineChn = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
802
803 if (!pEventPool->poolIsEmpty()) {
804
805 if(!pEngineChn->StealVoice(itNoteOnEvent, &itLastStolenVoice, &iuiLastStolenKey)) {
806 --VoiceSpawnsLeft;
807 return 0;
808 }
809
810 // if we couldn't steal a voice from the same engine channel then
811 // steal oldest voice on the oldest key from any other engine channel
812 // (the smaller engine channel number, the higher priority)
813 EngineChannelBase<V, R, I>* pSelectedChannel;
814 int iChannelIndex;
815 VoiceIterator itSelectedVoice;
816
817 // select engine channel
818 if (pLastStolenChannel) {
819 pSelectedChannel = pLastStolenChannel;
820 iChannelIndex = pSelectedChannel->iEngineIndexSelf;
821 } else { // pick the engine channel followed by this engine channel
822 iChannelIndex = (pEngineChn->iEngineIndexSelf + 1) % engineChannels.size();
823 pSelectedChannel = static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannelIndex]);
824 }
825
826 // if we already stole in this fragment, try to proceed on same key
827 if (this->itLastStolenVoiceGlobally) {
828 itSelectedVoice = this->itLastStolenVoiceGlobally;
829 do {
830 ++itSelectedVoice;
831 } while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle
832 }
833
834 #if CONFIG_DEVMODE
835 EngineChannel* pBegin = pSelectedChannel; // to detect endless loop
836 #endif // CONFIG_DEVMODE
837
838 // did we find a 'stealable' voice?
839 if (itSelectedVoice && itSelectedVoice->IsStealable()) {
840 // remember which voice we stole, so we can simply proceed on next voice stealing
841 this->itLastStolenVoiceGlobally = itSelectedVoice;
842 } else while (true) { // iterate through engine channels
843 // get (next) oldest key
844 RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKeyGlobally) ? ++this->iuiLastStolenKeyGlobally : pSelectedChannel->pActiveKeys->first();
845 this->iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); // to prevent endless loop (see line above)
846 while (iuiSelectedKey) {
847 MidiKey* pSelectedKey = &pSelectedChannel->pMIDIKeyInfo[*iuiSelectedKey];
848 itSelectedVoice = pSelectedKey->pActiveVoices->first();
849 // proceed iterating if voice was created in this fragment cycle
850 while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice;
851 // found a "stealable" voice ?
852 if (itSelectedVoice && itSelectedVoice->IsStealable()) {
853 // remember which voice on which key on which engine channel we stole, so we can simply proceed on next voice stealing
854 this->iuiLastStolenKeyGlobally = iuiSelectedKey;
855 this->itLastStolenVoiceGlobally = itSelectedVoice;
856 this->pLastStolenChannel = pSelectedChannel;
857 goto stealable_voice_found; // selection succeeded
858 }
859 ++iuiSelectedKey; // get next key on current engine channel
860 }
861 // get next engine channel
862 iChannelIndex = (iChannelIndex + 1) % engineChannels.size();
863 pSelectedChannel = static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannelIndex]);
864
865 #if CONFIG_DEVMODE
866 if (pSelectedChannel == pBegin) {
867 dmsg(1,("FATAL ERROR: voice stealing endless loop!\n"));
868 dmsg(1,("VoiceSpawnsLeft=%d.\n", VoiceSpawnsLeft));
869 dmsg(1,("Exiting.\n"));
870 exit(-1);
871 }
872 #endif // CONFIG_DEVMODE
873 }
874
875 // jump point if a 'stealable' voice was found
876 stealable_voice_found:
877
878 #if CONFIG_DEVMODE
879 if (!itSelectedVoice->IsActive()) {
880 dmsg(1,("EngineBase: ERROR, tried to steal a voice which was not active !!!\n"));
881 return -1;
882 }
883 #endif // CONFIG_DEVMODE
884
885 // now kill the selected voice
886 itSelectedVoice->Kill(itNoteOnEvent);
887
888 --VoiceSpawnsLeft;
889
890 return 0; // success
891 }
892 else {
893 dmsg(1,("Event pool emtpy!\n"));
894 return -1;
895 }
896 }
897
898 void HandleInstrumentChanges() {
899 bool instrumentChanged = false;
900 for (int i = 0; i < engineChannels.size(); i++) {
901 EngineChannelBase<V, R, I>* pEngineChannel =
902 static_cast<EngineChannelBase<V, R, I>*>(engineChannels[i]);
903
904 // as we're going to (carefully) write some status to the
905 // synchronized struct, we cast away the const
906 InstrumentChangeCmd<R, I>& cmd =
907 const_cast<InstrumentChangeCmd<R, I>&>(pEngineChannel->InstrumentChangeCommandReader.Lock());
908
909 pEngineChannel->pRegionsInUse = cmd.pRegionsInUse;
910 pEngineChannel->pRegionsInUse->clear();
911
912 if (cmd.bChangeInstrument) {
913 // change instrument
914 dmsg(5,("Engine: instrument change command received\n"));
915 cmd.bChangeInstrument = false;
916 pEngineChannel->pInstrument = cmd.pInstrument;
917 instrumentChanged = true;
918
919 pEngineChannel->MarkAllActiveVoicesAsOrphans();
920 }
921 }
922
923 if (instrumentChanged) {
924 //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
925 ResetSuspendedRegions();
926 }
927 }
928
929 /**
930 * Render all 'normal' voices (that is voices which were not stolen in
931 * this fragment) on the given engine channel.
932 *
933 * @param pEngineChannel - engine channel on which audio should be
934 * rendered
935 * @param Samples - amount of sample points to be rendered in
936 * this audio fragment cycle
937 */
938 void RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples) {
939 #if !CONFIG_PROCESS_MUTED_CHANNELS
940 if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted
941 #endif
942
943 EngineChannelBase<V, R, I>* pChannel =
944 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
945 pChannel->RenderActiveVoices(Samples);
946
947 ActiveVoiceCountTemp += pEngineChannel->GetVoiceCount();
948 }
949
950 /**
951 * Render all stolen voices (only voices which were stolen in this
952 * fragment) on the given engine channel. Stolen voices are rendered
953 * after all normal voices have been rendered; this is needed to render
954 * audio of those voices which were selected for voice stealing until
955 * the point were the stealing (that is the take over of the voice)
956 * actually happened.
957 *
958 * @param pEngineChannel - engine channel on which audio should be
959 * rendered
960 * @param Samples - amount of sample points to be rendered in
961 * this audio fragment cycle
962 */
963 void RenderStolenVoices(uint Samples) {
964 RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first();
965 RTList<Event>::Iterator end = pVoiceStealingQueue->end();
966 for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {
967 EngineChannelBase<V, R, I>* pEngineChannel =
968 static_cast<EngineChannelBase<V, R, I>*>(itVoiceStealEvent->pEngineChannel);;
969 if (!pEngineChannel->pInstrument) continue; // ignore if no instrument loaded
970 PoolVoiceIterator itNewVoice =
971 LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false, false);
972 if (itNewVoice) {
973 itNewVoice->Render(Samples);
974 if (itNewVoice->IsActive()) { // still active
975 *(pEngineChannel->pRegionsInUse->allocAppend()) = itNewVoice->GetRegion();
976 ActiveVoiceCountTemp++;
977 pEngineChannel->SetVoiceCount(pEngineChannel->GetVoiceCount() + 1);
978
979 if (itNewVoice->PlaybackState == Voice::playback_state_disk) {
980 if (itNewVoice->DiskStreamRef.State != Stream::state_unused) {
981 pEngineChannel->SetDiskStreamCount(pEngineChannel->GetDiskStreamCount() + 1);
982 }
983 }
984 } else { // voice reached end, is now inactive
985 pEngineChannel->FreeVoice(itNewVoice); // remove voice from the list of active voices
986 }
987 }
988 else dmsg(1,("EngineBase: ERROR, voice stealing didn't work out!\n"));
989
990 // we need to clear the key's event list explicitly here in case key was never active
991 MidiKey* pKey = &pEngineChannel->pMIDIKeyInfo[itVoiceStealEvent->Param.Note.Key];
992 pKey->VoiceTheftsQueued--;
993 if (!pKey->Active && !pKey->VoiceTheftsQueued) pKey->pEvents->clear();
994 }
995 }
996
997 /**
998 * Free all keys which have turned inactive in this audio fragment, from
999 * the list of active keys and clear all event lists on that engine
1000 * channel.
1001 *
1002 * @param pEngineChannel - engine channel to cleanup
1003 */
1004 void PostProcess(EngineChannel* pEngineChannel) {
1005 EngineChannelBase<V, R, I>* pChannel =
1006 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1007 pChannel->FreeAllInactiveKyes();
1008
1009 // empty the engine channel's own event lists
1010 pChannel->ClearEventLists();
1011 }
1012
1013 /**
1014 * Process MIDI control change events with hard coded behavior,
1015 * that is controllers whose behavior is defined independently
1016 * of the actual sampler engine type and instrument.
1017 *
1018 * @param pEngineChannel - engine channel on which the MIDI CC event was received
1019 * @param itControlChangeEvent - the actual MIDI CC event
1020 */
1021 void ProcessHardcodedControllers (
1022 EngineChannel* pEngineChannel,
1023 Pool<Event>::Iterator& itControlChangeEvent
1024 ) {
1025 EngineChannelBase<V, R, I>* pChannel =
1026 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1027
1028 switch (itControlChangeEvent->Param.CC.Controller) {
1029 case 5: { // portamento time
1030 pChannel->PortamentoTime = (float) itControlChangeEvent->Param.CC.Value / 127.0f * (float) CONFIG_PORTAMENTO_TIME_MAX + (float) CONFIG_PORTAMENTO_TIME_MIN;
1031 break;
1032 }
1033 case 6: { // data entry (currently only used for RPN and NRPN controllers)
1034 //dmsg(1,("DATA ENTRY %d\n", itControlChangeEvent->Param.CC.Value));
1035 if (pChannel->GetMidiRpnController() >= 0) { // RPN controller number was sent previously ...
1036 dmsg(4,("Guess it's an RPN ...\n"));
1037 if (pChannel->GetMidiRpnController() == 2) { // coarse tuning in half tones
1038 int transpose = (int) itControlChangeEvent->Param.CC.Value - 64;
1039 // limit to +- two octaves for now
1040 transpose = RTMath::Min(transpose, 24);
1041 transpose = RTMath::Max(transpose, -24);
1042 pChannel->GlobalTranspose = transpose;
1043 // workaround, so we won't have hanging notes
1044 pChannel->ReleaseAllVoices(itControlChangeEvent);
1045 }
1046 // to prevent other MIDI CC #6 messages to be misenterpreted as RPN controller data
1047 pChannel->ResetMidiRpnController();
1048 } else if (pChannel->GetMidiNrpnController() >= 0) { // NRPN controller number was sent previously ...
1049 dmsg(4,("Guess it's an NRPN ...\n"));
1050 const int NrpnCtrlMSB = pChannel->GetMidiNrpnController() >> 8;
1051 const int NrpnCtrlLSB = pChannel->GetMidiNrpnController() & 0xff;
1052 dmsg(4,("NRPN MSB=%d LSB=%d Data=%d\n", NrpnCtrlMSB, NrpnCtrlLSB, itControlChangeEvent->Param.CC.Value));
1053 switch (NrpnCtrlMSB) {
1054 case 0x1a: { // volume level of note (Roland GS NRPN)
1055 const uint note = NrpnCtrlLSB;
1056 const uint vol = itControlChangeEvent->Param.CC.Value;
1057 dmsg(4,("Note Volume NRPN received (note=%d,vol=%d).\n", note, vol));
1058 if (note < 128 && vol < 128)
1059 pChannel->pMIDIKeyInfo[note].Volume = VolumeCurve[vol];
1060 break;
1061 }
1062 case 0x1c: { // panpot of note (Roland GS NRPN)
1063 const uint note = NrpnCtrlLSB;
1064 const uint pan = itControlChangeEvent->Param.CC.Value;
1065 dmsg(4,("Note Pan NRPN received (note=%d,pan=%d).\n", note, pan));
1066 if (note < 128 && pan < 128) {
1067 pChannel->pMIDIKeyInfo[note].PanLeft = PanCurve[128 - pan];
1068 pChannel->pMIDIKeyInfo[note].PanRight = PanCurve[pan];
1069 }
1070 break;
1071 }
1072 case 0x1d: { // reverb send of note (Roland GS NRPN)
1073 const uint note = NrpnCtrlLSB;
1074 const float reverb = float(itControlChangeEvent->Param.CC.Value) / 127.0f;
1075 dmsg(4,("Note Reverb Send NRPN received (note=%d,send=%d).\n", note, reverb));
1076 if (note < 128)
1077 pChannel->pMIDIKeyInfo[note].ReverbSend = reverb;
1078 break;
1079 }
1080 case 0x1e: { // chorus send of note (Roland GS NRPN)
1081 const uint note = NrpnCtrlLSB;
1082 const float chorus = float(itControlChangeEvent->Param.CC.Value) / 127.0f;
1083 dmsg(4,("Note Chorus Send NRPN received (note=%d,send=%d).\n", note, chorus));
1084 if (note < 128)
1085 pChannel->pMIDIKeyInfo[note].ChorusSend = chorus;
1086 break;
1087 }
1088 }
1089 // to prevent other MIDI CC #6 messages to be misenterpreted as NRPN controller data
1090 pChannel->ResetMidiNrpnController();
1091 }
1092 break;
1093 }
1094 case 7: { // volume
1095 //TODO: not sample accurate yet
1096 pChannel->MidiVolume = VolumeCurve[itControlChangeEvent->Param.CC.Value];
1097 pChannel->bStatusChanged = true; // engine channel status has changed, so set notify flag
1098 break;
1099 }
1100 case 10: { // panpot
1101 //TODO: not sample accurate yet
1102 pChannel->iLastPanRequest = itControlChangeEvent->Param.CC.Value;
1103 break;
1104 }
1105 case 64: { // sustain
1106 if (itControlChangeEvent->Param.CC.Value >= 64 && !pChannel->SustainPedal) {
1107 dmsg(4,("DAMPER (RIGHT) PEDAL DOWN\n"));
1108 pChannel->SustainPedal = true;
1109 pChannel->listeners.PreProcessSustainPedalDown();
1110
1111 #if !CONFIG_PROCESS_MUTED_CHANNELS
1112 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1113 pChannel->listeners.PostProcessSustainPedalDown();
1114 return;
1115 }
1116 #endif
1117
1118 pChannel->ProcessSustainPedalDown(itControlChangeEvent);
1119 pChannel->listeners.PostProcessSustainPedalDown();
1120 }
1121 if (itControlChangeEvent->Param.CC.Value < 64 && pChannel->SustainPedal) {
1122 dmsg(4,("DAMPER (RIGHT) PEDAL UP\n"));
1123 pChannel->SustainPedal = false;
1124 pChannel->listeners.PreProcessSustainPedalUp();
1125
1126 #if !CONFIG_PROCESS_MUTED_CHANNELS
1127 if (pChannel->GetMute()) { // skip if sampler channel is muted
1128 pChannel->listeners.PostProcessSustainPedalUp();
1129 return;
1130 }
1131 #endif
1132
1133 pChannel->ProcessSustainPedalUp(itControlChangeEvent);
1134 pChannel->listeners.PostProcessSustainPedalUp();
1135 }
1136 break;
1137 }
1138 case 65: { // portamento on / off
1139 const bool bPortamento = itControlChangeEvent->Param.CC.Value >= 64;
1140 if (bPortamento != pChannel->PortamentoMode)
1141 KillAllVoices(pChannel, itControlChangeEvent);
1142 pChannel->PortamentoMode = bPortamento;
1143 break;
1144 }
1145 case 66: { // sostenuto
1146 if (itControlChangeEvent->Param.CC.Value >= 64 && !pChannel->SostenutoPedal) {
1147 dmsg(4,("SOSTENUTO (CENTER) PEDAL DOWN\n"));
1148 pChannel->SostenutoPedal = true;
1149 pChannel->listeners.PreProcessSostenutoPedalDown();
1150
1151 #if !CONFIG_PROCESS_MUTED_CHANNELS
1152 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1153 pChannel->listeners.PostProcessSostenutoPedalDown();
1154 return;
1155 }
1156 #endif
1157
1158 pChannel->ProcessSostenutoPedalDown();
1159 pChannel->listeners.PostProcessSostenutoPedalDown();
1160 }
1161 if (itControlChangeEvent->Param.CC.Value < 64 && pChannel->SostenutoPedal) {
1162 dmsg(4,("SOSTENUTO (CENTER) PEDAL UP\n"));
1163 pChannel->SostenutoPedal = false;
1164 pChannel->listeners.PreProcessSostenutoPedalUp();
1165
1166 #if !CONFIG_PROCESS_MUTED_CHANNELS
1167 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1168 pChannel->listeners.PostProcessSostenutoPedalUp();
1169 return;
1170 }
1171 #endif
1172
1173 pChannel->ProcessSostenutoPedalUp(itControlChangeEvent);
1174 pChannel->listeners.PostProcessSostenutoPedalUp();
1175 }
1176 break;
1177 }
1178 case 98: { // NRPN controller LSB
1179 dmsg(4,("NRPN LSB %d\n", itControlChangeEvent->Param.CC.Value));
1180 pEngineChannel->SetMidiNrpnControllerLsb(itControlChangeEvent->Param.CC.Value);
1181 break;
1182 }
1183 case 99: { // NRPN controller MSB
1184 dmsg(4,("NRPN MSB %d\n", itControlChangeEvent->Param.CC.Value));
1185 pEngineChannel->SetMidiNrpnControllerMsb(itControlChangeEvent->Param.CC.Value);
1186 break;
1187 }
1188 case 100: { // RPN controller LSB
1189 dmsg(4,("RPN LSB %d\n", itControlChangeEvent->Param.CC.Value));
1190 pEngineChannel->SetMidiRpnControllerLsb(itControlChangeEvent->Param.CC.Value);
1191 break;
1192 }
1193 case 101: { // RPN controller MSB
1194 dmsg(4,("RPN MSB %d\n", itControlChangeEvent->Param.CC.Value));
1195 pEngineChannel->SetMidiRpnControllerMsb(itControlChangeEvent->Param.CC.Value);
1196 break;
1197 }
1198
1199
1200 // Channel Mode Messages
1201
1202 case 120: { // all sound off
1203 KillAllVoices(pEngineChannel, itControlChangeEvent);
1204 break;
1205 }
1206 case 121: { // reset all controllers
1207 pChannel->ResetControllers();
1208 break;
1209 }
1210 case 123: { // all notes off
1211 #if CONFIG_PROCESS_ALL_NOTES_OFF
1212 pChannel->ReleaseAllVoices(itControlChangeEvent);
1213 #endif // CONFIG_PROCESS_ALL_NOTES_OFF
1214 break;
1215 }
1216 case 126: { // mono mode on
1217 if (!pChannel->SoloMode)
1218 KillAllVoices(pEngineChannel, itControlChangeEvent);
1219 pChannel->SoloMode = true;
1220 break;
1221 }
1222 case 127: { // poly mode on
1223 if (pChannel->SoloMode)
1224 KillAllVoices(pEngineChannel, itControlChangeEvent);
1225 pChannel->SoloMode = false;
1226 break;
1227 }
1228 }
1229 }
1230
1231 virtual D* CreateDiskThread() = 0;
1232
1233 /**
1234 * Assigns and triggers a new voice for the respective MIDI key.
1235 *
1236 * @param pEngineChannel - engine channel on which this event occured on
1237 * @param itNoteOnEvent - key, velocity and time stamp of the event
1238 */
1239 virtual void ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
1240 EngineChannelBase<V, R, I>* pChannel =
1241 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1242
1243 //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
1244 int k = itNoteOnEvent->Param.Note.Key + pChannel->GlobalTranspose;
1245 if (k < 0 || k > 127) return; //ignore keys outside the key range
1246
1247 itNoteOnEvent->Param.Note.Key += pChannel->GlobalTranspose;
1248 int vel = itNoteOnEvent->Param.Note.Velocity;
1249
1250 const int key = itNoteOnEvent->Param.Note.Key;
1251 MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];
1252
1253 pChannel->listeners.PreProcessNoteOn(key, vel);
1254 #if !CONFIG_PROCESS_MUTED_CHANNELS
1255 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1256 pChannel->listeners.PostProcessNoteOn(key, vel);
1257 return;
1258 }
1259 #endif
1260
1261 if (!pChannel->pInstrument) {
1262 pChannel->listeners.PostProcessNoteOn(key, vel);
1263 return; // ignore if no instrument loaded
1264 }
1265
1266 // move note on event to the key's own event list
1267 RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);
1268
1269 // if Solo Mode then kill all already active voices
1270 if (pChannel->SoloMode) {
1271 Pool<uint>::Iterator itYoungestKey = pChannel->pActiveKeys->last();
1272 if (itYoungestKey) {
1273 const int iYoungestKey = *itYoungestKey;
1274 const MidiKey* pOtherKey = &pChannel->pMIDIKeyInfo[iYoungestKey];
1275 if (pOtherKey->Active) {
1276 // get final portamento position of currently active voice
1277 if (pChannel->PortamentoMode) {
1278 VoiceIterator itVoice = pOtherKey->pActiveVoices->last();
1279 if (itVoice) itVoice->UpdatePortamentoPos(itNoteOnEventOnKeyList);
1280 }
1281 // kill all voices on the (other) key
1282 VoiceIterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first();
1283 VoiceIterator end = pOtherKey->pActiveVoices->end();
1284 for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
1285 if (!(itVoiceToBeKilled->Type & Voice::type_release_trigger))
1286 itVoiceToBeKilled->Kill(itNoteOnEventOnKeyList);
1287 }
1288 }
1289 }
1290 // set this key as 'currently active solo key'
1291 pChannel->SoloKey = key;
1292 }
1293
1294 pChannel->ProcessKeySwitchChange(key);
1295
1296 pKey->KeyPressed = true; // the MIDI key was now pressed down
1297 pKey->Velocity = itNoteOnEventOnKeyList->Param.Note.Velocity;
1298 pKey->NoteOnTime = FrameTime + itNoteOnEventOnKeyList->FragmentPos(); // will be used to calculate note length
1299
1300 // cancel release process of voices on this key if needed
1301 if (pKey->Active && !pChannel->SustainPedal) {
1302 RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend();
1303 if (itCancelReleaseEvent) {
1304 *itCancelReleaseEvent = *itNoteOnEventOnKeyList; // copy event
1305 itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type
1306 }
1307 else dmsg(1,("Event pool emtpy!\n"));
1308 }
1309
1310 TriggerNewVoices(pEngineChannel, itNoteOnEventOnKeyList);
1311
1312 // if neither a voice was spawned or postponed then remove note on event from key again
1313 if (!pKey->Active && !pKey->VoiceTheftsQueued)
1314 pKey->pEvents->free(itNoteOnEventOnKeyList);
1315
1316 if (!pChannel->SoloMode || pChannel->PortamentoPos < 0.0f) pChannel->PortamentoPos = (float) key;
1317 if (pKey->pRoundRobinIndex) {
1318 (*pKey->pRoundRobinIndex)++; // counter specific for the key or region
1319 pChannel->RoundRobinIndex++; // common counter for the channel
1320 }
1321 pChannel->listeners.PostProcessNoteOn(key, vel);
1322 }
1323
1324 /**
1325 * Allocate and trigger new voice(s) for the key.
1326 */
1327 virtual void TriggerNewVoices (
1328 EngineChannel* pEngineChannel,
1329 RTList<Event>::Iterator& itNoteOnEvent,
1330 bool HandleKeyGroupConflicts = true
1331 ) = 0;
1332
1333 /**
1334 * Allocate and trigger release voice(s) for the key.
1335 */
1336 virtual void TriggerReleaseVoices (
1337 EngineChannel* pEngineChannel,
1338 RTList<Event>::Iterator& itNoteOffEvent
1339 ) = 0;
1340
1341 /**
1342 * Releases the voices on the given key if sustain pedal is not pressed.
1343 * If sustain is pressed, the release of the note will be postponed until
1344 * sustain pedal will be released or voice turned inactive by itself (e.g.
1345 * due to completion of sample playback).
1346 *
1347 * @param pEngineChannel - engine channel on which this event occured on
1348 * @param itNoteOffEvent - key, velocity and time stamp of the event
1349 */
1350 virtual void ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) {
1351 EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1352
1353 int k = itNoteOffEvent->Param.Note.Key + pChannel->GlobalTranspose;
1354 if (k < 0 || k > 127) return; //ignore keys outside the key range
1355
1356 //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
1357 itNoteOffEvent->Param.Note.Key += pChannel->GlobalTranspose;
1358 int vel = itNoteOffEvent->Param.Note.Velocity;
1359
1360 const int iKey = itNoteOffEvent->Param.Note.Key;
1361 MidiKey* pKey = &pChannel->pMIDIKeyInfo[iKey];
1362
1363 pChannel->listeners.PreProcessNoteOff(iKey, vel);
1364
1365 #if !CONFIG_PROCESS_MUTED_CHANNELS
1366 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1367 pChannel->listeners.PostProcessNoteOff(iKey, vel);
1368 return;
1369 }
1370 #endif
1371
1372 pKey->KeyPressed = false; // the MIDI key was now released
1373
1374 // move event to the key's own event list
1375 RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);
1376
1377 bool bShouldRelease = pKey->Active && pChannel->ShouldReleaseVoice(itNoteOffEventOnKeyList->Param.Note.Key);
1378
1379 // in case Solo Mode is enabled, kill all voices on this key and respawn a voice on the highest pressed key (if any)
1380 if (pChannel->SoloMode && pChannel->pInstrument) { //TODO: this feels like too much code just for handling solo mode :P
1381 bool bOtherKeysPressed = false;
1382 if (iKey == pChannel->SoloKey) {
1383 pChannel->SoloKey = -1;
1384 // if there's still a key pressed down, respawn a voice (group) on the highest key
1385 for (int i = 127; i > 0; i--) {
1386 MidiKey* pOtherKey = &pChannel->pMIDIKeyInfo[i];
1387 if (pOtherKey->KeyPressed) {
1388 bOtherKeysPressed = true;
1389 // make the other key the new 'currently active solo key'
1390 pChannel->SoloKey = i;
1391 // get final portamento position of currently active voice
1392 if (pChannel->PortamentoMode) {
1393 VoiceIterator itVoice = pKey->pActiveVoices->first();
1394 if (itVoice) itVoice->UpdatePortamentoPos(itNoteOffEventOnKeyList);
1395 }
1396 // create a pseudo note on event
1397 RTList<Event>::Iterator itPseudoNoteOnEvent = pOtherKey->pEvents->allocAppend();
1398 if (itPseudoNoteOnEvent) {
1399 // copy event
1400 *itPseudoNoteOnEvent = *itNoteOffEventOnKeyList;
1401 // transform event to a note on event
1402 itPseudoNoteOnEvent->Type = Event::type_note_on;
1403 itPseudoNoteOnEvent->Param.Note.Key = i;
1404 itPseudoNoteOnEvent->Param.Note.Velocity = pOtherKey->Velocity;
1405 // allocate and trigger new voice(s) for the other key
1406 TriggerNewVoices(pChannel, itPseudoNoteOnEvent, false);
1407 // if neither a voice was spawned or postponed then remove note on event from key again
1408 if (!pOtherKey->Active && !pOtherKey->VoiceTheftsQueued)
1409 pOtherKey->pEvents->free(itPseudoNoteOnEvent);
1410
1411 } else dmsg(1,("Could not respawn voice, no free event left\n"));
1412 break; // done
1413 }
1414 }
1415 }
1416 if (bOtherKeysPressed) {
1417 if (pKey->Active) { // kill all voices on this key
1418 bShouldRelease = false; // no need to release, as we kill it here
1419 VoiceIterator itVoiceToBeKilled = pKey->pActiveVoices->first();
1420 VoiceIterator end = pKey->pActiveVoices->end();
1421 for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
1422 if (!(itVoiceToBeKilled->Type & Voice::type_release_trigger))
1423 itVoiceToBeKilled->Kill(itNoteOffEventOnKeyList);
1424 }
1425 }
1426 } else pChannel->PortamentoPos = -1.0f;
1427 }
1428
1429 // if no solo mode (the usual case) or if solo mode and no other key pressed, then release voices on this key if needed
1430 if (bShouldRelease) {
1431 itNoteOffEventOnKeyList->Type = Event::type_release; // transform event type
1432
1433 // spawn release triggered voice(s) if needed
1434 if (pKey->ReleaseTrigger && pChannel->pInstrument) {
1435 TriggerReleaseVoices(pChannel, itNoteOffEventOnKeyList);
1436 pKey->ReleaseTrigger = false;
1437 }
1438 }
1439
1440 // if neither a voice was spawned or postponed on this key then remove note off event from key again
1441 if (!pKey->Active && !pKey->VoiceTheftsQueued)
1442 pKey->pEvents->free(itNoteOffEventOnKeyList);
1443
1444 pChannel->listeners.PostProcessNoteOff(iKey, vel);
1445 }
1446
1447 /**
1448 * Reset all voices and disk thread and clear input event queue and all
1449 * control and status variables. This method is protected by a mutex.
1450 */
1451 virtual void ResetInternal() {
1452 LockGuard lock(ResetInternalMutex);
1453
1454 // make sure that the engine does not get any sysex messages
1455 // while it's reseting
1456 bool sysexDisabled = MidiInputPort::RemoveSysexListener(this);
1457 SetVoiceCount(0);
1458 ActiveVoiceCountMax = 0;
1459
1460 // reset voice stealing parameters
1461 pVoiceStealingQueue->clear();
1462 itLastStolenVoice = VoiceIterator();
1463 itLastStolenVoiceGlobally = VoiceIterator();
1464 iuiLastStolenKey = RTList<uint>::Iterator();
1465 iuiLastStolenKeyGlobally = RTList<uint>::Iterator();
1466 pLastStolenChannel = NULL;
1467
1468 // reset all voices
1469 for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
1470 iterVoice->Reset();
1471 }
1472 pVoicePool->clear();
1473
1474 // reset disk thread
1475 if (pDiskThread) pDiskThread->Reset();
1476
1477 // delete all input events
1478 pEventQueue->init();
1479 pSysexBuffer->init();
1480 if (sysexDisabled) MidiInputPort::AddSysexListener(this);
1481 }
1482
1483 /**
1484 * Kills all voices on an engine channel as soon as possible. Voices
1485 * won't get into release state, their volume level will be ramped down
1486 * as fast as possible.
1487 *
1488 * @param pEngineChannel - engine channel on which all voices should be killed
1489 * @param itKillEvent - event which caused this killing of all voices
1490 */
1491 virtual void KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent) {
1492 EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1493 int count = pChannel->KillAllVoices(itKillEvent);
1494 VoiceSpawnsLeft -= count; //FIXME: just a temporary workaround, we should check the cause in StealVoice() instead
1495 }
1496
1497 /**
1498 * Allocates and triggers a new voice. This method will usually be
1499 * called by the ProcessNoteOn() method and by the voices itself
1500 * (e.g. to spawn further voices on the same key for layered sounds).
1501 *
1502 * @param pEngineChannel - engine channel on which this event occured on
1503 * @param itNoteOnEvent - key, velocity and time stamp of the event
1504 * @param iLayer - layer index for the new voice (optional - only
1505 * in case of layered sounds of course)
1506 * @param ReleaseTriggerVoice - if new voice is a release triggered voice
1507 * (optional, default = false)
1508 * @param VoiceStealing - if voice stealing should be performed
1509 * when there is no free voice
1510 * (optional, default = true)
1511 * @param HandleKeyGroupConflicts - if voices should be killed due to a
1512 * key group conflict
1513 * @returns pointer to new voice or NULL if there was no free voice or
1514 * if the voice wasn't triggered (for example when no region is
1515 * defined for the given key).
1516 */
1517 virtual PoolVoiceIterator LaunchVoice (
1518 EngineChannel* pEngineChannel,
1519 Pool<Event>::Iterator& itNoteOnEvent,
1520 int iLayer,
1521 bool ReleaseTriggerVoice,
1522 bool VoiceStealing,
1523 bool HandleKeyGroupConflicts
1524 ) = 0;
1525
1526 virtual int GetMinFadeOutSamples() { return MinFadeOutSamples; }
1527
1528 int InitNewVoice (
1529 EngineChannelBase<V, R, I>* pChannel,
1530 R* pRegion,
1531 Pool<Event>::Iterator& itNoteOnEvent,
1532 Voice::type_t VoiceType,
1533 int iLayer,
1534 int iKeyGroup,
1535 bool ReleaseTriggerVoice,
1536 bool VoiceStealing,
1537 typename Pool<V>::Iterator& itNewVoice
1538 ) {
1539 int key = itNoteOnEvent->Param.Note.Key;
1540 typename MidiKeyboardManager<V>::MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];
1541 if (itNewVoice) {
1542 // launch the new voice
1543 if (itNewVoice->Trigger(pChannel, itNoteOnEvent, pChannel->Pitch, pRegion, VoiceType, iKeyGroup) < 0) {
1544 dmsg(4,("Voice not triggered\n"));
1545 pKey->pActiveVoices->free(itNewVoice);
1546 }
1547 else { // on success
1548 --VoiceSpawnsLeft;
1549 if (!pKey->Active) { // mark as active key
1550 pKey->Active = true;
1551 pKey->itSelf = pChannel->pActiveKeys->allocAppend();
1552 *pKey->itSelf = itNoteOnEvent->Param.Note.Key;
1553 }
1554 if (itNewVoice->Type & Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s)
1555 return 0; // success
1556 }
1557 }
1558 else if (VoiceStealing) {
1559 // try to steal one voice
1560 int result = StealVoice(pChannel, itNoteOnEvent);
1561 if (!result) { // voice stolen successfully
1562 // put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died
1563 RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend();
1564 if (itStealEvent) {
1565 *itStealEvent = *itNoteOnEvent; // copy event
1566 itStealEvent->Param.Note.Layer = iLayer;
1567 itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice;
1568 pKey->VoiceTheftsQueued++;
1569 }
1570 else dmsg(1,("Voice stealing queue full!\n"));
1571 }
1572 }
1573
1574 return -1;
1575 }
1576
1577 /**
1578 * Checks whether scale tuning setting has been changed since last
1579 * time this method was called, if yes, it recalculates the pitch
1580 * for all active voices.
1581 */
1582 void ProcessScaleTuningChange() {
1583 const bool changed = ScaleTuningChanged.readAndReset();
1584 if (!changed) return;
1585
1586 for (int i = 0; i < engineChannels.size(); i++) {
1587 EngineChannelBase<V, R, I>* channel =
1588 static_cast<EngineChannelBase<V, R, I>*>(engineChannels[i]);
1589 channel->OnScaleTuningChanged();
1590 }
1591 }
1592
1593 private:
1594 Pool<V>* pVoicePool; ///< Contains all voices that can be activated.
1595 Pool<RR*> SuspendedRegions;
1596 Mutex SuspendedRegionsMutex;
1597 Condition SuspensionChangeOngoing;
1598 RR* pPendingRegionSuspension;
1599 RR* pPendingRegionResumption;
1600 int iPendingStreamDeletions;
1601 };
1602
1603 template <class V, class RR, class R, class D, class IM, class I>
1604 IM EngineBase<V, RR, R, D, IM, I>::instruments;
1605
1606 } // namespace LinuxSampler
1607
1608 #endif /* __LS_ENGINEBASE_H__ */
1609

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