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

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Revision 2612 - (show annotations) (download) (as text)
Tue Jun 10 13:32:16 2014 UTC (9 years, 9 months ago) by schoenebeck
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* Fixed crashes when exiting the sampler.
* Bumped version (1.0.0.svn47).

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->pScript && pChannel->pScript->bHasValidScript) {
638 // resume any suspended script executions still hanging
639 // around of previous audio fragment cycles
640 for (RTList<ScriptEvent>::Iterator itEvent = pChannel->pScript->pEvents->first(),
641 end = pChannel->pScript->pEvents->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->pScript->handlerNote)
654 ProcessEventByScript(pChannel, itEvent, pChannel->pScript->handlerNote);
655 break;
656 case Event::type_note_off:
657 if (pChannel->pScript->handlerRelease)
658 ProcessEventByScript(pChannel, itEvent, pChannel->pScript->handlerRelease);
659 break;
660 case Event::type_control_change:
661 case Event::type_channel_pressure:
662 case Event::type_pitchbend:
663 if (pChannel->pScript->handlerController)
664 ProcessEventByScript(pChannel, itEvent, pChannel->pScript->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->pScript->pEvents->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 itScriptEvent->handlers[i++] = pEventHandler; // actual event handler (i.e. note, controller)
734 itScriptEvent->handlers[i] = NULL; // NULL termination of list
735
736 // initialize/reset other members
737 itScriptEvent->cause = *itEvent;
738 itScriptEvent->id = pEventPool->getID(itEvent);
739 itScriptEvent->currentHandler = 0;
740 itScriptEvent->executionSlices = 0;
741
742 // run script handler(s)
743 VMExecStatus_t res = pScriptVM->exec(
744 pChannel->pScript->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->pScript->pEvents->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->pScript->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->pScript->pEvents->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 pEngineChannel->pScript = cmd.pScript;
918 instrumentChanged = true;
919
920 pEngineChannel->MarkAllActiveVoicesAsOrphans();
921
922 // the script's "init" event handler is only executed
923 // once (when the script is loaded or reloaded)
924 if (pEngineChannel->pScript && pEngineChannel->pScript->handlerInit) {
925 RTList<ScriptEvent>::Iterator itScriptEvent =
926 pEngineChannel->pScript->pEvents->allocAppend();
927
928 VMExecStatus_t res = pScriptVM->exec(
929 pEngineChannel->pScript->parserContext, &*itScriptEvent
930 );
931
932 pEngineChannel->pScript->pEvents->free(itScriptEvent);
933 }
934 }
935 }
936
937 if (instrumentChanged) {
938 //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
939 ResetSuspendedRegions();
940 }
941 }
942
943 /**
944 * Render all 'normal' voices (that is voices which were not stolen in
945 * this fragment) on the given engine channel.
946 *
947 * @param pEngineChannel - engine channel on which audio should be
948 * rendered
949 * @param Samples - amount of sample points to be rendered in
950 * this audio fragment cycle
951 */
952 void RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples) {
953 #if !CONFIG_PROCESS_MUTED_CHANNELS
954 if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted
955 #endif
956
957 EngineChannelBase<V, R, I>* pChannel =
958 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
959 pChannel->RenderActiveVoices(Samples);
960
961 ActiveVoiceCountTemp += pEngineChannel->GetVoiceCount();
962 }
963
964 /**
965 * Render all stolen voices (only voices which were stolen in this
966 * fragment) on the given engine channel. Stolen voices are rendered
967 * after all normal voices have been rendered; this is needed to render
968 * audio of those voices which were selected for voice stealing until
969 * the point were the stealing (that is the take over of the voice)
970 * actually happened.
971 *
972 * @param pEngineChannel - engine channel on which audio should be
973 * rendered
974 * @param Samples - amount of sample points to be rendered in
975 * this audio fragment cycle
976 */
977 void RenderStolenVoices(uint Samples) {
978 RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first();
979 RTList<Event>::Iterator end = pVoiceStealingQueue->end();
980 for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {
981 EngineChannelBase<V, R, I>* pEngineChannel =
982 static_cast<EngineChannelBase<V, R, I>*>(itVoiceStealEvent->pEngineChannel);;
983 if (!pEngineChannel->pInstrument) continue; // ignore if no instrument loaded
984 PoolVoiceIterator itNewVoice =
985 LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false, false);
986 if (itNewVoice) {
987 itNewVoice->Render(Samples);
988 if (itNewVoice->IsActive()) { // still active
989 *(pEngineChannel->pRegionsInUse->allocAppend()) = itNewVoice->GetRegion();
990 ActiveVoiceCountTemp++;
991 pEngineChannel->SetVoiceCount(pEngineChannel->GetVoiceCount() + 1);
992
993 if (itNewVoice->PlaybackState == Voice::playback_state_disk) {
994 if (itNewVoice->DiskStreamRef.State != Stream::state_unused) {
995 pEngineChannel->SetDiskStreamCount(pEngineChannel->GetDiskStreamCount() + 1);
996 }
997 }
998 } else { // voice reached end, is now inactive
999 pEngineChannel->FreeVoice(itNewVoice); // remove voice from the list of active voices
1000 }
1001 }
1002 else dmsg(1,("EngineBase: ERROR, voice stealing didn't work out!\n"));
1003
1004 // we need to clear the key's event list explicitly here in case key was never active
1005 MidiKey* pKey = &pEngineChannel->pMIDIKeyInfo[itVoiceStealEvent->Param.Note.Key];
1006 pKey->VoiceTheftsQueued--;
1007 if (!pKey->Active && !pKey->VoiceTheftsQueued) pKey->pEvents->clear();
1008 }
1009 }
1010
1011 /**
1012 * Free all keys which have turned inactive in this audio fragment, from
1013 * the list of active keys and clear all event lists on that engine
1014 * channel.
1015 *
1016 * @param pEngineChannel - engine channel to cleanup
1017 */
1018 void PostProcess(EngineChannel* pEngineChannel) {
1019 EngineChannelBase<V, R, I>* pChannel =
1020 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1021 pChannel->FreeAllInactiveKyes();
1022
1023 // empty the engine channel's own event lists
1024 pChannel->ClearEventLists();
1025 }
1026
1027 /**
1028 * Process MIDI control change events with hard coded behavior,
1029 * that is controllers whose behavior is defined independently
1030 * of the actual sampler engine type and instrument.
1031 *
1032 * @param pEngineChannel - engine channel on which the MIDI CC event was received
1033 * @param itControlChangeEvent - the actual MIDI CC event
1034 */
1035 void ProcessHardcodedControllers (
1036 EngineChannel* pEngineChannel,
1037 Pool<Event>::Iterator& itControlChangeEvent
1038 ) {
1039 EngineChannelBase<V, R, I>* pChannel =
1040 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1041
1042 switch (itControlChangeEvent->Param.CC.Controller) {
1043 case 5: { // portamento time
1044 pChannel->PortamentoTime = (float) itControlChangeEvent->Param.CC.Value / 127.0f * (float) CONFIG_PORTAMENTO_TIME_MAX + (float) CONFIG_PORTAMENTO_TIME_MIN;
1045 break;
1046 }
1047 case 6: { // data entry (currently only used for RPN and NRPN controllers)
1048 //dmsg(1,("DATA ENTRY %d\n", itControlChangeEvent->Param.CC.Value));
1049 if (pChannel->GetMidiRpnController() >= 0) { // RPN controller number was sent previously ...
1050 dmsg(4,("Guess it's an RPN ...\n"));
1051 if (pChannel->GetMidiRpnController() == 2) { // coarse tuning in half tones
1052 int transpose = (int) itControlChangeEvent->Param.CC.Value - 64;
1053 // limit to +- two octaves for now
1054 transpose = RTMath::Min(transpose, 24);
1055 transpose = RTMath::Max(transpose, -24);
1056 pChannel->GlobalTranspose = transpose;
1057 // workaround, so we won't have hanging notes
1058 pChannel->ReleaseAllVoices(itControlChangeEvent);
1059 }
1060 // to prevent other MIDI CC #6 messages to be misenterpreted as RPN controller data
1061 pChannel->ResetMidiRpnController();
1062 } else if (pChannel->GetMidiNrpnController() >= 0) { // NRPN controller number was sent previously ...
1063 dmsg(4,("Guess it's an NRPN ...\n"));
1064 const int NrpnCtrlMSB = pChannel->GetMidiNrpnController() >> 8;
1065 const int NrpnCtrlLSB = pChannel->GetMidiNrpnController() & 0xff;
1066 dmsg(4,("NRPN MSB=%d LSB=%d Data=%d\n", NrpnCtrlMSB, NrpnCtrlLSB, itControlChangeEvent->Param.CC.Value));
1067 switch (NrpnCtrlMSB) {
1068 case 0x1a: { // volume level of note (Roland GS NRPN)
1069 const uint note = NrpnCtrlLSB;
1070 const uint vol = itControlChangeEvent->Param.CC.Value;
1071 dmsg(4,("Note Volume NRPN received (note=%d,vol=%d).\n", note, vol));
1072 if (note < 128 && vol < 128)
1073 pChannel->pMIDIKeyInfo[note].Volume = VolumeCurve[vol];
1074 break;
1075 }
1076 case 0x1c: { // panpot of note (Roland GS NRPN)
1077 const uint note = NrpnCtrlLSB;
1078 const uint pan = itControlChangeEvent->Param.CC.Value;
1079 dmsg(4,("Note Pan NRPN received (note=%d,pan=%d).\n", note, pan));
1080 if (note < 128 && pan < 128) {
1081 pChannel->pMIDIKeyInfo[note].PanLeft = PanCurve[128 - pan];
1082 pChannel->pMIDIKeyInfo[note].PanRight = PanCurve[pan];
1083 }
1084 break;
1085 }
1086 case 0x1d: { // reverb send of note (Roland GS NRPN)
1087 const uint note = NrpnCtrlLSB;
1088 const float reverb = float(itControlChangeEvent->Param.CC.Value) / 127.0f;
1089 dmsg(4,("Note Reverb Send NRPN received (note=%d,send=%d).\n", note, reverb));
1090 if (note < 128)
1091 pChannel->pMIDIKeyInfo[note].ReverbSend = reverb;
1092 break;
1093 }
1094 case 0x1e: { // chorus send of note (Roland GS NRPN)
1095 const uint note = NrpnCtrlLSB;
1096 const float chorus = float(itControlChangeEvent->Param.CC.Value) / 127.0f;
1097 dmsg(4,("Note Chorus Send NRPN received (note=%d,send=%d).\n", note, chorus));
1098 if (note < 128)
1099 pChannel->pMIDIKeyInfo[note].ChorusSend = chorus;
1100 break;
1101 }
1102 }
1103 // to prevent other MIDI CC #6 messages to be misenterpreted as NRPN controller data
1104 pChannel->ResetMidiNrpnController();
1105 }
1106 break;
1107 }
1108 case 7: { // volume
1109 //TODO: not sample accurate yet
1110 pChannel->MidiVolume = VolumeCurve[itControlChangeEvent->Param.CC.Value];
1111 pChannel->bStatusChanged = true; // engine channel status has changed, so set notify flag
1112 break;
1113 }
1114 case 10: { // panpot
1115 //TODO: not sample accurate yet
1116 pChannel->iLastPanRequest = itControlChangeEvent->Param.CC.Value;
1117 break;
1118 }
1119 case 64: { // sustain
1120 if (itControlChangeEvent->Param.CC.Value >= 64 && !pChannel->SustainPedal) {
1121 dmsg(4,("DAMPER (RIGHT) PEDAL DOWN\n"));
1122 pChannel->SustainPedal = true;
1123 pChannel->listeners.PreProcessSustainPedalDown();
1124
1125 #if !CONFIG_PROCESS_MUTED_CHANNELS
1126 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1127 pChannel->listeners.PostProcessSustainPedalDown();
1128 return;
1129 }
1130 #endif
1131
1132 pChannel->ProcessSustainPedalDown(itControlChangeEvent);
1133 pChannel->listeners.PostProcessSustainPedalDown();
1134 }
1135 if (itControlChangeEvent->Param.CC.Value < 64 && pChannel->SustainPedal) {
1136 dmsg(4,("DAMPER (RIGHT) PEDAL UP\n"));
1137 pChannel->SustainPedal = false;
1138 pChannel->listeners.PreProcessSustainPedalUp();
1139
1140 #if !CONFIG_PROCESS_MUTED_CHANNELS
1141 if (pChannel->GetMute()) { // skip if sampler channel is muted
1142 pChannel->listeners.PostProcessSustainPedalUp();
1143 return;
1144 }
1145 #endif
1146
1147 pChannel->ProcessSustainPedalUp(itControlChangeEvent);
1148 pChannel->listeners.PostProcessSustainPedalUp();
1149 }
1150 break;
1151 }
1152 case 65: { // portamento on / off
1153 const bool bPortamento = itControlChangeEvent->Param.CC.Value >= 64;
1154 if (bPortamento != pChannel->PortamentoMode)
1155 KillAllVoices(pChannel, itControlChangeEvent);
1156 pChannel->PortamentoMode = bPortamento;
1157 break;
1158 }
1159 case 66: { // sostenuto
1160 if (itControlChangeEvent->Param.CC.Value >= 64 && !pChannel->SostenutoPedal) {
1161 dmsg(4,("SOSTENUTO (CENTER) PEDAL DOWN\n"));
1162 pChannel->SostenutoPedal = true;
1163 pChannel->listeners.PreProcessSostenutoPedalDown();
1164
1165 #if !CONFIG_PROCESS_MUTED_CHANNELS
1166 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1167 pChannel->listeners.PostProcessSostenutoPedalDown();
1168 return;
1169 }
1170 #endif
1171
1172 pChannel->ProcessSostenutoPedalDown();
1173 pChannel->listeners.PostProcessSostenutoPedalDown();
1174 }
1175 if (itControlChangeEvent->Param.CC.Value < 64 && pChannel->SostenutoPedal) {
1176 dmsg(4,("SOSTENUTO (CENTER) PEDAL UP\n"));
1177 pChannel->SostenutoPedal = false;
1178 pChannel->listeners.PreProcessSostenutoPedalUp();
1179
1180 #if !CONFIG_PROCESS_MUTED_CHANNELS
1181 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1182 pChannel->listeners.PostProcessSostenutoPedalUp();
1183 return;
1184 }
1185 #endif
1186
1187 pChannel->ProcessSostenutoPedalUp(itControlChangeEvent);
1188 pChannel->listeners.PostProcessSostenutoPedalUp();
1189 }
1190 break;
1191 }
1192 case 98: { // NRPN controller LSB
1193 dmsg(4,("NRPN LSB %d\n", itControlChangeEvent->Param.CC.Value));
1194 pEngineChannel->SetMidiNrpnControllerLsb(itControlChangeEvent->Param.CC.Value);
1195 break;
1196 }
1197 case 99: { // NRPN controller MSB
1198 dmsg(4,("NRPN MSB %d\n", itControlChangeEvent->Param.CC.Value));
1199 pEngineChannel->SetMidiNrpnControllerMsb(itControlChangeEvent->Param.CC.Value);
1200 break;
1201 }
1202 case 100: { // RPN controller LSB
1203 dmsg(4,("RPN LSB %d\n", itControlChangeEvent->Param.CC.Value));
1204 pEngineChannel->SetMidiRpnControllerLsb(itControlChangeEvent->Param.CC.Value);
1205 break;
1206 }
1207 case 101: { // RPN controller MSB
1208 dmsg(4,("RPN MSB %d\n", itControlChangeEvent->Param.CC.Value));
1209 pEngineChannel->SetMidiRpnControllerMsb(itControlChangeEvent->Param.CC.Value);
1210 break;
1211 }
1212
1213
1214 // Channel Mode Messages
1215
1216 case 120: { // all sound off
1217 KillAllVoices(pEngineChannel, itControlChangeEvent);
1218 break;
1219 }
1220 case 121: { // reset all controllers
1221 pChannel->ResetControllers();
1222 break;
1223 }
1224 case 123: { // all notes off
1225 #if CONFIG_PROCESS_ALL_NOTES_OFF
1226 pChannel->ReleaseAllVoices(itControlChangeEvent);
1227 #endif // CONFIG_PROCESS_ALL_NOTES_OFF
1228 break;
1229 }
1230 case 126: { // mono mode on
1231 if (!pChannel->SoloMode)
1232 KillAllVoices(pEngineChannel, itControlChangeEvent);
1233 pChannel->SoloMode = true;
1234 break;
1235 }
1236 case 127: { // poly mode on
1237 if (pChannel->SoloMode)
1238 KillAllVoices(pEngineChannel, itControlChangeEvent);
1239 pChannel->SoloMode = false;
1240 break;
1241 }
1242 }
1243 }
1244
1245 virtual D* CreateDiskThread() = 0;
1246
1247 /**
1248 * Assigns and triggers a new voice for the respective MIDI key.
1249 *
1250 * @param pEngineChannel - engine channel on which this event occured on
1251 * @param itNoteOnEvent - key, velocity and time stamp of the event
1252 */
1253 virtual void ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
1254 EngineChannelBase<V, R, I>* pChannel =
1255 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1256
1257 //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
1258 int k = itNoteOnEvent->Param.Note.Key + pChannel->GlobalTranspose;
1259 if (k < 0 || k > 127) return; //ignore keys outside the key range
1260
1261 itNoteOnEvent->Param.Note.Key += pChannel->GlobalTranspose;
1262 int vel = itNoteOnEvent->Param.Note.Velocity;
1263
1264 const int key = itNoteOnEvent->Param.Note.Key;
1265 MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];
1266
1267 pChannel->listeners.PreProcessNoteOn(key, vel);
1268 #if !CONFIG_PROCESS_MUTED_CHANNELS
1269 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1270 pChannel->listeners.PostProcessNoteOn(key, vel);
1271 return;
1272 }
1273 #endif
1274
1275 if (!pChannel->pInstrument) {
1276 pChannel->listeners.PostProcessNoteOn(key, vel);
1277 return; // ignore if no instrument loaded
1278 }
1279
1280 // move note on event to the key's own event list
1281 RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);
1282
1283 // if Solo Mode then kill all already active voices
1284 if (pChannel->SoloMode) {
1285 Pool<uint>::Iterator itYoungestKey = pChannel->pActiveKeys->last();
1286 if (itYoungestKey) {
1287 const int iYoungestKey = *itYoungestKey;
1288 const MidiKey* pOtherKey = &pChannel->pMIDIKeyInfo[iYoungestKey];
1289 if (pOtherKey->Active) {
1290 // get final portamento position of currently active voice
1291 if (pChannel->PortamentoMode) {
1292 VoiceIterator itVoice = pOtherKey->pActiveVoices->last();
1293 if (itVoice) itVoice->UpdatePortamentoPos(itNoteOnEventOnKeyList);
1294 }
1295 // kill all voices on the (other) key
1296 VoiceIterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first();
1297 VoiceIterator end = pOtherKey->pActiveVoices->end();
1298 for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
1299 if (!(itVoiceToBeKilled->Type & Voice::type_release_trigger))
1300 itVoiceToBeKilled->Kill(itNoteOnEventOnKeyList);
1301 }
1302 }
1303 }
1304 // set this key as 'currently active solo key'
1305 pChannel->SoloKey = key;
1306 }
1307
1308 pChannel->ProcessKeySwitchChange(key);
1309
1310 pKey->KeyPressed = true; // the MIDI key was now pressed down
1311 pKey->Velocity = itNoteOnEventOnKeyList->Param.Note.Velocity;
1312 pKey->NoteOnTime = FrameTime + itNoteOnEventOnKeyList->FragmentPos(); // will be used to calculate note length
1313
1314 // cancel release process of voices on this key if needed
1315 if (pKey->Active && !pChannel->SustainPedal) {
1316 RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend();
1317 if (itCancelReleaseEvent) {
1318 *itCancelReleaseEvent = *itNoteOnEventOnKeyList; // copy event
1319 itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type
1320 }
1321 else dmsg(1,("Event pool emtpy!\n"));
1322 }
1323
1324 TriggerNewVoices(pEngineChannel, itNoteOnEventOnKeyList);
1325
1326 // if neither a voice was spawned or postponed then remove note on event from key again
1327 if (!pKey->Active && !pKey->VoiceTheftsQueued)
1328 pKey->pEvents->free(itNoteOnEventOnKeyList);
1329
1330 if (!pChannel->SoloMode || pChannel->PortamentoPos < 0.0f) pChannel->PortamentoPos = (float) key;
1331 if (pKey->pRoundRobinIndex) {
1332 (*pKey->pRoundRobinIndex)++; // counter specific for the key or region
1333 pChannel->RoundRobinIndex++; // common counter for the channel
1334 }
1335 pChannel->listeners.PostProcessNoteOn(key, vel);
1336 }
1337
1338 /**
1339 * Allocate and trigger new voice(s) for the key.
1340 */
1341 virtual void TriggerNewVoices (
1342 EngineChannel* pEngineChannel,
1343 RTList<Event>::Iterator& itNoteOnEvent,
1344 bool HandleKeyGroupConflicts = true
1345 ) = 0;
1346
1347 /**
1348 * Allocate and trigger release voice(s) for the key.
1349 */
1350 virtual void TriggerReleaseVoices (
1351 EngineChannel* pEngineChannel,
1352 RTList<Event>::Iterator& itNoteOffEvent
1353 ) = 0;
1354
1355 /**
1356 * Releases the voices on the given key if sustain pedal is not pressed.
1357 * If sustain is pressed, the release of the note will be postponed until
1358 * sustain pedal will be released or voice turned inactive by itself (e.g.
1359 * due to completion of sample playback).
1360 *
1361 * @param pEngineChannel - engine channel on which this event occured on
1362 * @param itNoteOffEvent - key, velocity and time stamp of the event
1363 */
1364 virtual void ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) {
1365 EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1366
1367 int k = itNoteOffEvent->Param.Note.Key + pChannel->GlobalTranspose;
1368 if (k < 0 || k > 127) return; //ignore keys outside the key range
1369
1370 //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
1371 itNoteOffEvent->Param.Note.Key += pChannel->GlobalTranspose;
1372 int vel = itNoteOffEvent->Param.Note.Velocity;
1373
1374 const int iKey = itNoteOffEvent->Param.Note.Key;
1375 MidiKey* pKey = &pChannel->pMIDIKeyInfo[iKey];
1376
1377 pChannel->listeners.PreProcessNoteOff(iKey, vel);
1378
1379 #if !CONFIG_PROCESS_MUTED_CHANNELS
1380 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1381 pChannel->listeners.PostProcessNoteOff(iKey, vel);
1382 return;
1383 }
1384 #endif
1385
1386 pKey->KeyPressed = false; // the MIDI key was now released
1387
1388 // move event to the key's own event list
1389 RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);
1390
1391 bool bShouldRelease = pKey->Active && pChannel->ShouldReleaseVoice(itNoteOffEventOnKeyList->Param.Note.Key);
1392
1393 // in case Solo Mode is enabled, kill all voices on this key and respawn a voice on the highest pressed key (if any)
1394 if (pChannel->SoloMode && pChannel->pInstrument) { //TODO: this feels like too much code just for handling solo mode :P
1395 bool bOtherKeysPressed = false;
1396 if (iKey == pChannel->SoloKey) {
1397 pChannel->SoloKey = -1;
1398 // if there's still a key pressed down, respawn a voice (group) on the highest key
1399 for (int i = 127; i > 0; i--) {
1400 MidiKey* pOtherKey = &pChannel->pMIDIKeyInfo[i];
1401 if (pOtherKey->KeyPressed) {
1402 bOtherKeysPressed = true;
1403 // make the other key the new 'currently active solo key'
1404 pChannel->SoloKey = i;
1405 // get final portamento position of currently active voice
1406 if (pChannel->PortamentoMode) {
1407 VoiceIterator itVoice = pKey->pActiveVoices->first();
1408 if (itVoice) itVoice->UpdatePortamentoPos(itNoteOffEventOnKeyList);
1409 }
1410 // create a pseudo note on event
1411 RTList<Event>::Iterator itPseudoNoteOnEvent = pOtherKey->pEvents->allocAppend();
1412 if (itPseudoNoteOnEvent) {
1413 // copy event
1414 *itPseudoNoteOnEvent = *itNoteOffEventOnKeyList;
1415 // transform event to a note on event
1416 itPseudoNoteOnEvent->Type = Event::type_note_on;
1417 itPseudoNoteOnEvent->Param.Note.Key = i;
1418 itPseudoNoteOnEvent->Param.Note.Velocity = pOtherKey->Velocity;
1419 // allocate and trigger new voice(s) for the other key
1420 TriggerNewVoices(pChannel, itPseudoNoteOnEvent, false);
1421 // if neither a voice was spawned or postponed then remove note on event from key again
1422 if (!pOtherKey->Active && !pOtherKey->VoiceTheftsQueued)
1423 pOtherKey->pEvents->free(itPseudoNoteOnEvent);
1424
1425 } else dmsg(1,("Could not respawn voice, no free event left\n"));
1426 break; // done
1427 }
1428 }
1429 }
1430 if (bOtherKeysPressed) {
1431 if (pKey->Active) { // kill all voices on this key
1432 bShouldRelease = false; // no need to release, as we kill it here
1433 VoiceIterator itVoiceToBeKilled = pKey->pActiveVoices->first();
1434 VoiceIterator end = pKey->pActiveVoices->end();
1435 for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
1436 if (!(itVoiceToBeKilled->Type & Voice::type_release_trigger))
1437 itVoiceToBeKilled->Kill(itNoteOffEventOnKeyList);
1438 }
1439 }
1440 } else pChannel->PortamentoPos = -1.0f;
1441 }
1442
1443 // if no solo mode (the usual case) or if solo mode and no other key pressed, then release voices on this key if needed
1444 if (bShouldRelease) {
1445 itNoteOffEventOnKeyList->Type = Event::type_release; // transform event type
1446
1447 // spawn release triggered voice(s) if needed
1448 if (pKey->ReleaseTrigger && pChannel->pInstrument) {
1449 TriggerReleaseVoices(pChannel, itNoteOffEventOnKeyList);
1450 pKey->ReleaseTrigger = false;
1451 }
1452 }
1453
1454 // if neither a voice was spawned or postponed on this key then remove note off event from key again
1455 if (!pKey->Active && !pKey->VoiceTheftsQueued)
1456 pKey->pEvents->free(itNoteOffEventOnKeyList);
1457
1458 pChannel->listeners.PostProcessNoteOff(iKey, vel);
1459 }
1460
1461 /**
1462 * Reset all voices and disk thread and clear input event queue and all
1463 * control and status variables. This method is protected by a mutex.
1464 */
1465 virtual void ResetInternal() {
1466 LockGuard lock(ResetInternalMutex);
1467
1468 // make sure that the engine does not get any sysex messages
1469 // while it's reseting
1470 bool sysexDisabled = MidiInputPort::RemoveSysexListener(this);
1471 SetVoiceCount(0);
1472 ActiveVoiceCountMax = 0;
1473
1474 // reset voice stealing parameters
1475 pVoiceStealingQueue->clear();
1476 itLastStolenVoice = VoiceIterator();
1477 itLastStolenVoiceGlobally = VoiceIterator();
1478 iuiLastStolenKey = RTList<uint>::Iterator();
1479 iuiLastStolenKeyGlobally = RTList<uint>::Iterator();
1480 pLastStolenChannel = NULL;
1481
1482 // reset all voices
1483 for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
1484 iterVoice->Reset();
1485 }
1486 pVoicePool->clear();
1487
1488 // reset disk thread
1489 if (pDiskThread) pDiskThread->Reset();
1490
1491 // delete all input events
1492 pEventQueue->init();
1493 pSysexBuffer->init();
1494 if (sysexDisabled) MidiInputPort::AddSysexListener(this);
1495 }
1496
1497 /**
1498 * Kills all voices on an engine channel as soon as possible. Voices
1499 * won't get into release state, their volume level will be ramped down
1500 * as fast as possible.
1501 *
1502 * @param pEngineChannel - engine channel on which all voices should be killed
1503 * @param itKillEvent - event which caused this killing of all voices
1504 */
1505 virtual void KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent) {
1506 EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1507 int count = pChannel->KillAllVoices(itKillEvent);
1508 VoiceSpawnsLeft -= count; //FIXME: just a temporary workaround, we should check the cause in StealVoice() instead
1509 }
1510
1511 /**
1512 * Allocates and triggers a new voice. This method will usually be
1513 * called by the ProcessNoteOn() method and by the voices itself
1514 * (e.g. to spawn further voices on the same key for layered sounds).
1515 *
1516 * @param pEngineChannel - engine channel on which this event occured on
1517 * @param itNoteOnEvent - key, velocity and time stamp of the event
1518 * @param iLayer - layer index for the new voice (optional - only
1519 * in case of layered sounds of course)
1520 * @param ReleaseTriggerVoice - if new voice is a release triggered voice
1521 * (optional, default = false)
1522 * @param VoiceStealing - if voice stealing should be performed
1523 * when there is no free voice
1524 * (optional, default = true)
1525 * @param HandleKeyGroupConflicts - if voices should be killed due to a
1526 * key group conflict
1527 * @returns pointer to new voice or NULL if there was no free voice or
1528 * if the voice wasn't triggered (for example when no region is
1529 * defined for the given key).
1530 */
1531 virtual PoolVoiceIterator LaunchVoice (
1532 EngineChannel* pEngineChannel,
1533 Pool<Event>::Iterator& itNoteOnEvent,
1534 int iLayer,
1535 bool ReleaseTriggerVoice,
1536 bool VoiceStealing,
1537 bool HandleKeyGroupConflicts
1538 ) = 0;
1539
1540 virtual int GetMinFadeOutSamples() { return MinFadeOutSamples; }
1541
1542 int InitNewVoice (
1543 EngineChannelBase<V, R, I>* pChannel,
1544 R* pRegion,
1545 Pool<Event>::Iterator& itNoteOnEvent,
1546 Voice::type_t VoiceType,
1547 int iLayer,
1548 int iKeyGroup,
1549 bool ReleaseTriggerVoice,
1550 bool VoiceStealing,
1551 typename Pool<V>::Iterator& itNewVoice
1552 ) {
1553 int key = itNoteOnEvent->Param.Note.Key;
1554 typename MidiKeyboardManager<V>::MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];
1555 if (itNewVoice) {
1556 // launch the new voice
1557 if (itNewVoice->Trigger(pChannel, itNoteOnEvent, pChannel->Pitch, pRegion, VoiceType, iKeyGroup) < 0) {
1558 dmsg(4,("Voice not triggered\n"));
1559 pKey->pActiveVoices->free(itNewVoice);
1560 }
1561 else { // on success
1562 --VoiceSpawnsLeft;
1563 if (!pKey->Active) { // mark as active key
1564 pKey->Active = true;
1565 pKey->itSelf = pChannel->pActiveKeys->allocAppend();
1566 *pKey->itSelf = itNoteOnEvent->Param.Note.Key;
1567 }
1568 if (itNewVoice->Type & Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s)
1569 return 0; // success
1570 }
1571 }
1572 else if (VoiceStealing) {
1573 // try to steal one voice
1574 int result = StealVoice(pChannel, itNoteOnEvent);
1575 if (!result) { // voice stolen successfully
1576 // put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died
1577 RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend();
1578 if (itStealEvent) {
1579 *itStealEvent = *itNoteOnEvent; // copy event
1580 itStealEvent->Param.Note.Layer = iLayer;
1581 itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice;
1582 pKey->VoiceTheftsQueued++;
1583 }
1584 else dmsg(1,("Voice stealing queue full!\n"));
1585 }
1586 }
1587
1588 return -1;
1589 }
1590
1591 /**
1592 * Checks whether scale tuning setting has been changed since last
1593 * time this method was called, if yes, it recalculates the pitch
1594 * for all active voices.
1595 */
1596 void ProcessScaleTuningChange() {
1597 const bool changed = ScaleTuningChanged.readAndReset();
1598 if (!changed) return;
1599
1600 for (int i = 0; i < engineChannels.size(); i++) {
1601 EngineChannelBase<V, R, I>* channel =
1602 static_cast<EngineChannelBase<V, R, I>*>(engineChannels[i]);
1603 channel->OnScaleTuningChanged();
1604 }
1605 }
1606
1607 private:
1608 Pool<V>* pVoicePool; ///< Contains all voices that can be activated.
1609 Pool<RR*> SuspendedRegions;
1610 Mutex SuspendedRegionsMutex;
1611 Condition SuspensionChangeOngoing;
1612 RR* pPendingRegionSuspension;
1613 RR* pPendingRegionResumption;
1614 int iPendingStreamDeletions;
1615 };
1616
1617 template <class V, class RR, class R, class D, class IM, class I>
1618 IM EngineBase<V, RR, R, D, IM, I>::instruments;
1619
1620 } // namespace LinuxSampler
1621
1622 #endif /* __LS_ENGINEBASE_H__ */
1623

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