1 |
/*************************************************************************** |
2 |
* * |
3 |
* LinuxSampler - modular, streaming capable sampler * |
4 |
* * |
5 |
* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
6 |
* Copyright (C) 2005 Christian Schoenebeck * |
7 |
* * |
8 |
* This program is free software; you can redistribute it and/or modify * |
9 |
* it under the terms of the GNU General Public License as published by * |
10 |
* the Free Software Foundation; either version 2 of the License, or * |
11 |
* (at your option) any later version. * |
12 |
* * |
13 |
* This program is distributed in the hope that it will be useful, * |
14 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
15 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
16 |
* GNU General Public License for more details. * |
17 |
* * |
18 |
* You should have received a copy of the GNU General Public License * |
19 |
* along with this program; if not, write to the Free Software * |
20 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
21 |
* MA 02111-1307 USA * |
22 |
***************************************************************************/ |
23 |
|
24 |
#include <sstream> |
25 |
#include "DiskThread.h" |
26 |
#include "Voice.h" |
27 |
#include "EGADSR.h" |
28 |
#include "../EngineFactory.h" |
29 |
|
30 |
#include "Engine.h" |
31 |
|
32 |
#if defined(__APPLE__) |
33 |
# include <stdlib.h> |
34 |
#else |
35 |
# include <malloc.h> |
36 |
#endif |
37 |
|
38 |
namespace LinuxSampler { namespace gig { |
39 |
|
40 |
InstrumentResourceManager Engine::instruments; |
41 |
|
42 |
std::map<AudioOutputDevice*,Engine*> Engine::engines; |
43 |
|
44 |
/** |
45 |
* Get a gig::Engine object for the given gig::EngineChannel and the |
46 |
* given AudioOutputDevice. All engine channels which are connected to |
47 |
* the same audio output device will use the same engine instance. This |
48 |
* method will be called by a gig::EngineChannel whenever it's |
49 |
* connecting to a audio output device. |
50 |
* |
51 |
* @param pChannel - engine channel which acquires an engine object |
52 |
* @param pDevice - the audio output device \a pChannel is connected to |
53 |
*/ |
54 |
Engine* Engine::AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) { |
55 |
Engine* pEngine = NULL; |
56 |
// check if there's already an engine for the given audio output device |
57 |
if (engines.count(pDevice)) { |
58 |
dmsg(4,("Using existing gig::Engine.\n")); |
59 |
pEngine = engines[pDevice]; |
60 |
} else { // create a new engine (and disk thread) instance for the given audio output device |
61 |
dmsg(4,("Creating new gig::Engine.\n")); |
62 |
pEngine = (Engine*) EngineFactory::Create("gig"); |
63 |
pEngine->Connect(pDevice); |
64 |
engines[pDevice] = pEngine; |
65 |
} |
66 |
// register engine channel to the engine instance |
67 |
pEngine->engineChannels.add(pChannel); |
68 |
// remember index in the ArrayList |
69 |
pChannel->iEngineIndexSelf = pEngine->engineChannels.size() - 1; |
70 |
dmsg(4,("This gig::Engine has now %d EngineChannels.\n",pEngine->engineChannels.size())); |
71 |
return pEngine; |
72 |
} |
73 |
|
74 |
/** |
75 |
* Once an engine channel is disconnected from an audio output device, |
76 |
* it wil immediately call this method to unregister itself from the |
77 |
* engine instance and if that engine instance is not used by any other |
78 |
* engine channel anymore, then that engine instance will be destroyed. |
79 |
* |
80 |
* @param pChannel - engine channel which wants to disconnect from it's |
81 |
* engine instance |
82 |
* @param pDevice - audio output device \a pChannel was connected to |
83 |
*/ |
84 |
void Engine::FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) { |
85 |
dmsg(4,("Disconnecting EngineChannel from gig::Engine.\n")); |
86 |
Engine* pEngine = engines[pDevice]; |
87 |
// unregister EngineChannel from the Engine instance |
88 |
pEngine->engineChannels.remove(pChannel); |
89 |
// if the used Engine instance is not used anymore, then destroy it |
90 |
if (pEngine->engineChannels.empty()) { |
91 |
pDevice->Disconnect(pEngine); |
92 |
engines.erase(pDevice); |
93 |
delete pEngine; |
94 |
dmsg(4,("Destroying gig::Engine.\n")); |
95 |
} |
96 |
else dmsg(4,("This gig::Engine has now %d EngineChannels.\n",pEngine->engineChannels.size())); |
97 |
} |
98 |
|
99 |
/** |
100 |
* Constructor |
101 |
*/ |
102 |
Engine::Engine() { |
103 |
pAudioOutputDevice = NULL; |
104 |
pDiskThread = NULL; |
105 |
pEventGenerator = NULL; |
106 |
pSysexBuffer = new RingBuffer<uint8_t>(CONFIG_SYSEX_BUFFER_SIZE, 0); |
107 |
pEventQueue = new RingBuffer<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0); |
108 |
pEventPool = new Pool<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT); |
109 |
pVoicePool = new Pool<Voice>(CONFIG_MAX_VOICES); |
110 |
pVoiceStealingQueue = new RTList<Event>(pEventPool); |
111 |
pGlobalEvents = new RTList<Event>(pEventPool); |
112 |
for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
113 |
iterVoice->SetEngine(this); |
114 |
} |
115 |
pVoicePool->clear(); |
116 |
|
117 |
pSynthesisParameters[0] = NULL; // we allocate when an audio device is connected |
118 |
pBasicFilterParameters = NULL; |
119 |
pMainFilterParameters = NULL; |
120 |
|
121 |
ResetInternal(); |
122 |
ResetScaleTuning(); |
123 |
} |
124 |
|
125 |
/** |
126 |
* Destructor |
127 |
*/ |
128 |
Engine::~Engine() { |
129 |
if (pDiskThread) { |
130 |
dmsg(1,("Stopping disk thread...")); |
131 |
pDiskThread->StopThread(); |
132 |
delete pDiskThread; |
133 |
dmsg(1,("OK\n")); |
134 |
} |
135 |
if (pEventQueue) delete pEventQueue; |
136 |
if (pEventPool) delete pEventPool; |
137 |
if (pVoicePool) { |
138 |
pVoicePool->clear(); |
139 |
delete pVoicePool; |
140 |
} |
141 |
if (pEventGenerator) delete pEventGenerator; |
142 |
if (pMainFilterParameters) delete[] pMainFilterParameters; |
143 |
if (pBasicFilterParameters) delete[] pBasicFilterParameters; |
144 |
if (pSynthesisParameters[0]) free(pSynthesisParameters[0]); |
145 |
if (pVoiceStealingQueue) delete pVoiceStealingQueue; |
146 |
if (pSysexBuffer) delete pSysexBuffer; |
147 |
EngineFactory::Destroy(this); |
148 |
} |
149 |
|
150 |
void Engine::Enable() { |
151 |
dmsg(3,("gig::Engine: enabling\n")); |
152 |
EngineDisabled.PushAndUnlock(false, 2); // set condition object 'EngineDisabled' to false (wait max. 2s) |
153 |
dmsg(3,("gig::Engine: enabled (val=%d)\n", EngineDisabled.GetUnsafe())); |
154 |
} |
155 |
|
156 |
void Engine::Disable() { |
157 |
dmsg(3,("gig::Engine: disabling\n")); |
158 |
bool* pWasDisabled = EngineDisabled.PushAndUnlock(true, 2); // wait max. 2s |
159 |
if (!pWasDisabled) dmsg(3,("gig::Engine warning: Timeout waiting to disable engine.\n")); |
160 |
} |
161 |
|
162 |
void Engine::DisableAndLock() { |
163 |
dmsg(3,("gig::Engine: disabling\n")); |
164 |
bool* pWasDisabled = EngineDisabled.Push(true, 2); // wait max. 2s |
165 |
if (!pWasDisabled) dmsg(3,("gig::Engine warning: Timeout waiting to disable engine.\n")); |
166 |
} |
167 |
|
168 |
/** |
169 |
* Reset all voices and disk thread and clear input event queue and all |
170 |
* control and status variables. |
171 |
*/ |
172 |
void Engine::Reset() { |
173 |
DisableAndLock(); |
174 |
ResetInternal(); |
175 |
ResetScaleTuning(); |
176 |
Enable(); |
177 |
} |
178 |
|
179 |
/** |
180 |
* Reset all voices and disk thread and clear input event queue and all |
181 |
* control and status variables. This method is not thread safe! |
182 |
*/ |
183 |
void Engine::ResetInternal() { |
184 |
ActiveVoiceCount = 0; |
185 |
ActiveVoiceCountMax = 0; |
186 |
|
187 |
// reset voice stealing parameters |
188 |
pVoiceStealingQueue->clear(); |
189 |
itLastStolenVoice = RTList<Voice>::Iterator(); |
190 |
itLastStolenVoiceGlobally = RTList<Voice>::Iterator(); |
191 |
iuiLastStolenKey = RTList<uint>::Iterator(); |
192 |
iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); |
193 |
pLastStolenChannel = NULL; |
194 |
|
195 |
// reset all voices |
196 |
for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
197 |
iterVoice->Reset(); |
198 |
} |
199 |
pVoicePool->clear(); |
200 |
|
201 |
// reset disk thread |
202 |
if (pDiskThread) pDiskThread->Reset(); |
203 |
|
204 |
// delete all input events |
205 |
pEventQueue->init(); |
206 |
} |
207 |
|
208 |
/** |
209 |
* Reset to normal, chromatic scale (means equal tempered). |
210 |
*/ |
211 |
void Engine::ResetScaleTuning() { |
212 |
memset(&ScaleTuning[0], 0x00, 12); |
213 |
} |
214 |
|
215 |
/** |
216 |
* Connect this engine instance with the given audio output device. |
217 |
* This method will be called when an Engine instance is created. |
218 |
* All of the engine's data structures which are dependant to the used |
219 |
* audio output device / driver will be (re)allocated and / or |
220 |
* adjusted appropriately. |
221 |
* |
222 |
* @param pAudioOut - audio output device to connect to |
223 |
*/ |
224 |
void Engine::Connect(AudioOutputDevice* pAudioOut) { |
225 |
pAudioOutputDevice = pAudioOut; |
226 |
|
227 |
ResetInternal(); |
228 |
|
229 |
// inform audio driver for the need of two channels |
230 |
try { |
231 |
pAudioOutputDevice->AcquireChannels(2); // gig engine only stereo |
232 |
} |
233 |
catch (AudioOutputException e) { |
234 |
String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message(); |
235 |
throw LinuxSamplerException(msg); |
236 |
} |
237 |
|
238 |
this->MaxSamplesPerCycle = pAudioOutputDevice->MaxSamplesPerCycle(); |
239 |
this->SampleRate = pAudioOutputDevice->SampleRate(); |
240 |
|
241 |
// FIXME: audio drivers with varying fragment sizes might be a problem here |
242 |
MaxFadeOutPos = MaxSamplesPerCycle - int(double(SampleRate) * CONFIG_EG_MIN_RELEASE_TIME) - 1; |
243 |
if (MaxFadeOutPos < 0) { |
244 |
std::cerr << "gig::Engine: WARNING, CONFIG_EG_MIN_RELEASE_TIME " |
245 |
<< "too big for current audio fragment size & sampling rate! " |
246 |
<< "May lead to click sounds if voice stealing chimes in!\n" << std::flush; |
247 |
// force volume ramp downs at the beginning of each fragment |
248 |
MaxFadeOutPos = 0; |
249 |
// lower minimum release time |
250 |
const float minReleaseTime = (float) MaxSamplesPerCycle / (float) SampleRate; |
251 |
for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
252 |
iterVoice->pEG1->CalculateFadeOutCoeff(minReleaseTime, SampleRate); |
253 |
} |
254 |
pVoicePool->clear(); |
255 |
} |
256 |
|
257 |
// (re)create disk thread |
258 |
if (this->pDiskThread) { |
259 |
dmsg(1,("Stopping disk thread...")); |
260 |
this->pDiskThread->StopThread(); |
261 |
delete this->pDiskThread; |
262 |
dmsg(1,("OK\n")); |
263 |
} |
264 |
this->pDiskThread = new DiskThread(((pAudioOut->MaxSamplesPerCycle() << CONFIG_MAX_PITCH) << 1) + 6); //FIXME: assuming stereo |
265 |
if (!pDiskThread) { |
266 |
dmsg(0,("gig::Engine new diskthread = NULL\n")); |
267 |
exit(EXIT_FAILURE); |
268 |
} |
269 |
|
270 |
for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
271 |
iterVoice->pDiskThread = this->pDiskThread; |
272 |
dmsg(3,("d")); |
273 |
} |
274 |
pVoicePool->clear(); |
275 |
|
276 |
// (re)create event generator |
277 |
if (pEventGenerator) delete pEventGenerator; |
278 |
pEventGenerator = new EventGenerator(pAudioOut->SampleRate()); |
279 |
|
280 |
// (re)allocate synthesis parameter matrix |
281 |
if (pSynthesisParameters[0]) free(pSynthesisParameters[0]); |
282 |
|
283 |
#if defined(__APPLE__) |
284 |
pSynthesisParameters[0] = (float *) malloc(Event::destination_count * sizeof(float) * pAudioOut->MaxSamplesPerCycle()); |
285 |
#else |
286 |
pSynthesisParameters[0] = (float *) memalign(16,(Event::destination_count * sizeof(float) * pAudioOut->MaxSamplesPerCycle())); |
287 |
#endif |
288 |
for (int dst = 1; dst < Event::destination_count; dst++) |
289 |
pSynthesisParameters[dst] = pSynthesisParameters[dst - 1] + pAudioOut->MaxSamplesPerCycle(); |
290 |
|
291 |
// (re)allocate biquad filter parameter sequence |
292 |
if (pBasicFilterParameters) delete[] pBasicFilterParameters; |
293 |
if (pMainFilterParameters) delete[] pMainFilterParameters; |
294 |
pBasicFilterParameters = new biquad_param_t[pAudioOut->MaxSamplesPerCycle()]; |
295 |
pMainFilterParameters = new biquad_param_t[pAudioOut->MaxSamplesPerCycle()]; |
296 |
|
297 |
dmsg(1,("Starting disk thread...")); |
298 |
pDiskThread->StartThread(); |
299 |
dmsg(1,("OK\n")); |
300 |
|
301 |
for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) { |
302 |
if (!iterVoice->pDiskThread) { |
303 |
dmsg(0,("Engine -> voice::trigger: !pDiskThread\n")); |
304 |
exit(EXIT_FAILURE); |
305 |
} |
306 |
} |
307 |
} |
308 |
|
309 |
/** |
310 |
* Clear all engine global event lists. |
311 |
*/ |
312 |
void Engine::ClearEventLists() { |
313 |
pGlobalEvents->clear(); |
314 |
} |
315 |
|
316 |
/** |
317 |
* Copy all events from the engine's global input queue buffer to the |
318 |
* engine's internal event list. This will be done at the beginning of |
319 |
* each audio cycle (that is each RenderAudio() call) to distinguish |
320 |
* all global events which have to be processed in the current audio |
321 |
* cycle. These events are usually just SysEx messages. Every |
322 |
* EngineChannel has it's own input event queue buffer and event list |
323 |
* to handle common events like NoteOn, NoteOff and ControlChange |
324 |
* events. |
325 |
* |
326 |
* @param Samples - number of sample points to be processed in the |
327 |
* current audio cycle |
328 |
*/ |
329 |
void Engine::ImportEvents(uint Samples) { |
330 |
RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader(); |
331 |
Event* pEvent; |
332 |
while (true) { |
333 |
// get next event from input event queue |
334 |
if (!(pEvent = eventQueueReader.pop())) break; |
335 |
// if younger event reached, ignore that and all subsequent ones for now |
336 |
if (pEvent->FragmentPos() >= Samples) { |
337 |
eventQueueReader--; |
338 |
dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples)); |
339 |
pEvent->ResetFragmentPos(); |
340 |
break; |
341 |
} |
342 |
// copy event to internal event list |
343 |
if (pGlobalEvents->poolIsEmpty()) { |
344 |
dmsg(1,("Event pool emtpy!\n")); |
345 |
break; |
346 |
} |
347 |
*pGlobalEvents->allocAppend() = *pEvent; |
348 |
} |
349 |
eventQueueReader.free(); // free all copied events from input queue |
350 |
} |
351 |
|
352 |
/** |
353 |
* Let this engine proceed to render the given amount of sample points. The |
354 |
* calculated audio data of all voices of this engine will be placed into |
355 |
* the engine's audio sum buffer which has to be copied and eventually be |
356 |
* converted to the appropriate value range by the audio output class (e.g. |
357 |
* AlsaIO or JackIO) right after. |
358 |
* |
359 |
* @param Samples - number of sample points to be rendered |
360 |
* @returns 0 on success |
361 |
*/ |
362 |
int Engine::RenderAudio(uint Samples) { |
363 |
dmsg(5,("RenderAudio(Samples=%d)\n", Samples)); |
364 |
|
365 |
// return if engine disabled |
366 |
if (EngineDisabled.Pop()) { |
367 |
dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe())); |
368 |
return 0; |
369 |
} |
370 |
|
371 |
// update time of start and end of this audio fragment (as events' time stamps relate to this) |
372 |
pEventGenerator->UpdateFragmentTime(Samples); |
373 |
|
374 |
// We only allow a maximum of CONFIG_MAX_VOICES voices to be spawned |
375 |
// in each audio fragment. All subsequent request for spawning new |
376 |
// voices in the same audio fragment will be ignored. |
377 |
VoiceSpawnsLeft = CONFIG_MAX_VOICES; |
378 |
|
379 |
// get all events from the engine's global input event queue which belong to the current fragment |
380 |
// (these are usually just SysEx messages) |
381 |
ImportEvents(Samples); |
382 |
|
383 |
// process engine global events (these are currently only MIDI System Exclusive messages) |
384 |
{ |
385 |
RTList<Event>::Iterator itEvent = pGlobalEvents->first(); |
386 |
RTList<Event>::Iterator end = pGlobalEvents->end(); |
387 |
for (; itEvent != end; ++itEvent) { |
388 |
switch (itEvent->Type) { |
389 |
case Event::type_sysex: |
390 |
dmsg(5,("Engine: Sysex received\n")); |
391 |
ProcessSysex(itEvent); |
392 |
break; |
393 |
} |
394 |
} |
395 |
} |
396 |
|
397 |
// reset internal voice counter (just for statistic of active voices) |
398 |
ActiveVoiceCountTemp = 0; |
399 |
|
400 |
// handle events on all engine channels |
401 |
for (int i = 0; i < engineChannels.size(); i++) { |
402 |
if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded |
403 |
ProcessEvents(engineChannels[i], Samples); |
404 |
} |
405 |
|
406 |
// render all 'normal', active voices on all engine channels |
407 |
for (int i = 0; i < engineChannels.size(); i++) { |
408 |
if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded |
409 |
RenderActiveVoices(engineChannels[i], Samples); |
410 |
} |
411 |
|
412 |
// now that all ordinary voices on ALL engine channels are rendered, render new stolen voices |
413 |
RenderStolenVoices(Samples); |
414 |
|
415 |
// handle cleanup on all engine channels for the next audio fragment |
416 |
for (int i = 0; i < engineChannels.size(); i++) { |
417 |
if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded |
418 |
PostProcess(engineChannels[i]); |
419 |
} |
420 |
|
421 |
|
422 |
// empty the engine's event list for the next audio fragment |
423 |
ClearEventLists(); |
424 |
|
425 |
// reset voice stealing for the next audio fragment |
426 |
pVoiceStealingQueue->clear(); |
427 |
|
428 |
// just some statistics about this engine instance |
429 |
ActiveVoiceCount = ActiveVoiceCountTemp; |
430 |
if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount; |
431 |
|
432 |
FrameTime += Samples; |
433 |
|
434 |
return 0; |
435 |
} |
436 |
|
437 |
/** |
438 |
* Dispatch and handle all events in this audio fragment for the given |
439 |
* engine channel. |
440 |
* |
441 |
* @param pEngineChannel - engine channel on which events should be |
442 |
* processed |
443 |
* @param Samples - amount of sample points to be processed in |
444 |
* this audio fragment cycle |
445 |
*/ |
446 |
void Engine::ProcessEvents(EngineChannel* pEngineChannel, uint Samples) { |
447 |
// get all events from the engine channels's input event queue which belong to the current fragment |
448 |
// (these are the common events like NoteOn, NoteOff, ControlChange, etc.) |
449 |
pEngineChannel->ImportEvents(Samples); |
450 |
|
451 |
// process events |
452 |
{ |
453 |
RTList<Event>::Iterator itEvent = pEngineChannel->pEvents->first(); |
454 |
RTList<Event>::Iterator end = pEngineChannel->pEvents->end(); |
455 |
for (; itEvent != end; ++itEvent) { |
456 |
switch (itEvent->Type) { |
457 |
case Event::type_note_on: |
458 |
dmsg(5,("Engine: Note on received\n")); |
459 |
ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent); |
460 |
break; |
461 |
case Event::type_note_off: |
462 |
dmsg(5,("Engine: Note off received\n")); |
463 |
ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent); |
464 |
break; |
465 |
case Event::type_control_change: |
466 |
dmsg(5,("Engine: MIDI CC received\n")); |
467 |
ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent); |
468 |
break; |
469 |
case Event::type_pitchbend: |
470 |
dmsg(5,("Engine: Pitchbend received\n")); |
471 |
ProcessPitchbend((EngineChannel*)itEvent->pEngineChannel, itEvent); |
472 |
break; |
473 |
} |
474 |
} |
475 |
} |
476 |
|
477 |
// reset voice stealing for the next engine channel (or next audio fragment) |
478 |
itLastStolenVoice = RTList<Voice>::Iterator(); |
479 |
itLastStolenVoiceGlobally = RTList<Voice>::Iterator(); |
480 |
iuiLastStolenKey = RTList<uint>::Iterator(); |
481 |
iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); |
482 |
pLastStolenChannel = NULL; |
483 |
} |
484 |
|
485 |
/** |
486 |
* Render all 'normal' voices (that is voices which were not stolen in |
487 |
* this fragment) on the given engine channel. |
488 |
* |
489 |
* @param pEngineChannel - engine channel on which audio should be |
490 |
* rendered |
491 |
* @param Samples - amount of sample points to be rendered in |
492 |
* this audio fragment cycle |
493 |
*/ |
494 |
void Engine::RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples) { |
495 |
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
496 |
|
497 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
498 |
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
499 |
while (iuiKey != end) { // iterate through all active keys |
500 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
501 |
++iuiKey; |
502 |
|
503 |
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
504 |
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
505 |
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
506 |
// now render current voice |
507 |
itVoice->Render(Samples); |
508 |
if (itVoice->IsActive()) ActiveVoiceCountTemp++; // still active |
509 |
else { // voice reached end, is now inactive |
510 |
FreeVoice(pEngineChannel, itVoice); // remove voice from the list of active voices |
511 |
} |
512 |
} |
513 |
} |
514 |
} |
515 |
|
516 |
/** |
517 |
* Render all stolen voices (only voices which were stolen in this |
518 |
* fragment) on the given engine channel. Stolen voices are rendered |
519 |
* after all normal voices have been rendered; this is needed to render |
520 |
* audio of those voices which were selected for voice stealing until |
521 |
* the point were the stealing (that is the take over of the voice) |
522 |
* actually happened. |
523 |
* |
524 |
* @param pEngineChannel - engine channel on which audio should be |
525 |
* rendered |
526 |
* @param Samples - amount of sample points to be rendered in |
527 |
* this audio fragment cycle |
528 |
*/ |
529 |
void Engine::RenderStolenVoices(uint Samples) { |
530 |
RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first(); |
531 |
RTList<Event>::Iterator end = pVoiceStealingQueue->end(); |
532 |
for (; itVoiceStealEvent != end; ++itVoiceStealEvent) { |
533 |
EngineChannel* pEngineChannel = (EngineChannel*) itVoiceStealEvent->pEngineChannel; |
534 |
Pool<Voice>::Iterator itNewVoice = |
535 |
LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false, false); |
536 |
if (itNewVoice) { |
537 |
itNewVoice->Render(Samples); |
538 |
if (itNewVoice->IsActive()) ActiveVoiceCountTemp++; // still active |
539 |
else { // voice reached end, is now inactive |
540 |
FreeVoice(pEngineChannel, itNewVoice); // remove voice from the list of active voices |
541 |
} |
542 |
} |
543 |
else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n")); |
544 |
|
545 |
// we need to clear the key's event list explicitly here in case key was never active |
546 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoiceStealEvent->Param.Note.Key]; |
547 |
pKey->VoiceTheftsQueued--; |
548 |
if (!pKey->Active && !pKey->VoiceTheftsQueued) pKey->pEvents->clear(); |
549 |
} |
550 |
} |
551 |
|
552 |
/** |
553 |
* Free all keys which have turned inactive in this audio fragment, from |
554 |
* the list of active keys and clear all event lists on that engine |
555 |
* channel. |
556 |
* |
557 |
* @param pEngineChannel - engine channel to cleanup |
558 |
*/ |
559 |
void Engine::PostProcess(EngineChannel* pEngineChannel) { |
560 |
// free all keys which have no active voices left |
561 |
{ |
562 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
563 |
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
564 |
while (iuiKey != end) { // iterate through all active keys |
565 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
566 |
++iuiKey; |
567 |
if (pKey->pActiveVoices->isEmpty()) FreeKey(pEngineChannel, pKey); |
568 |
#if CONFIG_DEVMODE |
569 |
else { // just a sanity check for debugging |
570 |
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
571 |
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
572 |
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
573 |
if (itVoice->itKillEvent) { |
574 |
dmsg(1,("gig::Engine: ERROR, killed voice survived !!!\n")); |
575 |
} |
576 |
} |
577 |
} |
578 |
#endif // CONFIG_DEVMODE |
579 |
} |
580 |
} |
581 |
|
582 |
// empty the engine channel's own event lists |
583 |
pEngineChannel->ClearEventLists(); |
584 |
} |
585 |
|
586 |
/** |
587 |
* Will be called by the MIDI input device whenever a MIDI system |
588 |
* exclusive message has arrived. |
589 |
* |
590 |
* @param pData - pointer to sysex data |
591 |
* @param Size - lenght of sysex data (in bytes) |
592 |
*/ |
593 |
void Engine::SendSysex(void* pData, uint Size) { |
594 |
Event event = pEventGenerator->CreateEvent(); |
595 |
event.Type = Event::type_sysex; |
596 |
event.Param.Sysex.Size = Size; |
597 |
event.pEngineChannel = NULL; // as Engine global event |
598 |
if (pEventQueue->write_space() > 0) { |
599 |
if (pSysexBuffer->write_space() >= Size) { |
600 |
// copy sysex data to input buffer |
601 |
uint toWrite = Size; |
602 |
uint8_t* pPos = (uint8_t*) pData; |
603 |
while (toWrite) { |
604 |
const uint writeNow = RTMath::Min(toWrite, pSysexBuffer->write_space_to_end()); |
605 |
pSysexBuffer->write(pPos, writeNow); |
606 |
toWrite -= writeNow; |
607 |
pPos += writeNow; |
608 |
|
609 |
} |
610 |
// finally place sysex event into input event queue |
611 |
pEventQueue->push(&event); |
612 |
} |
613 |
else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,CONFIG_SYSEX_BUFFER_SIZE)); |
614 |
} |
615 |
else dmsg(1,("Engine: Input event queue full!")); |
616 |
} |
617 |
|
618 |
/** |
619 |
* Assigns and triggers a new voice for the respective MIDI key. |
620 |
* |
621 |
* @param pEngineChannel - engine channel on which this event occured on |
622 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
623 |
*/ |
624 |
void Engine::ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) { |
625 |
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
626 |
|
627 |
const int key = itNoteOnEvent->Param.Note.Key; |
628 |
|
629 |
// Change key dimension value if key is in keyswitching area |
630 |
{ |
631 |
const ::gig::Instrument* pInstrument = pEngineChannel->pInstrument; |
632 |
if (key >= pInstrument->DimensionKeyRange.low && key <= pInstrument->DimensionKeyRange.high) |
633 |
pEngineChannel->CurrentKeyDimension = ((key - pInstrument->DimensionKeyRange.low) * 128) / |
634 |
(pInstrument->DimensionKeyRange.high - pInstrument->DimensionKeyRange.low + 1); |
635 |
} |
636 |
|
637 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[key]; |
638 |
|
639 |
pKey->KeyPressed = true; // the MIDI key was now pressed down |
640 |
pKey->Velocity = itNoteOnEvent->Param.Note.Velocity; |
641 |
pKey->NoteOnTime = FrameTime + itNoteOnEvent->FragmentPos(); // will be used to calculate note length |
642 |
|
643 |
// cancel release process of voices on this key if needed |
644 |
if (pKey->Active && !pEngineChannel->SustainPedal) { |
645 |
RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend(); |
646 |
if (itCancelReleaseEvent) { |
647 |
*itCancelReleaseEvent = *itNoteOnEvent; // copy event |
648 |
itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type |
649 |
} |
650 |
else dmsg(1,("Event pool emtpy!\n")); |
651 |
} |
652 |
|
653 |
// move note on event to the key's own event list |
654 |
RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents); |
655 |
|
656 |
// allocate and trigger new voice(s) for the key |
657 |
{ |
658 |
// first, get total amount of required voices (dependant on amount of layers) |
659 |
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOnEventOnKeyList->Param.Note.Key); |
660 |
if (pRegion) { |
661 |
int voicesRequired = pRegion->Layers; |
662 |
// now launch the required amount of voices |
663 |
for (int i = 0; i < voicesRequired; i++) |
664 |
LaunchVoice(pEngineChannel, itNoteOnEventOnKeyList, i, false, true, true); |
665 |
} |
666 |
} |
667 |
|
668 |
// if neither a voice was spawned or postponed then remove note on event from key again |
669 |
if (!pKey->Active && !pKey->VoiceTheftsQueued) |
670 |
pKey->pEvents->free(itNoteOnEventOnKeyList); |
671 |
|
672 |
pKey->RoundRobinIndex++; |
673 |
} |
674 |
|
675 |
/** |
676 |
* Releases the voices on the given key if sustain pedal is not pressed. |
677 |
* If sustain is pressed, the release of the note will be postponed until |
678 |
* sustain pedal will be released or voice turned inactive by itself (e.g. |
679 |
* due to completion of sample playback). |
680 |
* |
681 |
* @param pEngineChannel - engine channel on which this event occured on |
682 |
* @param itNoteOffEvent - key, velocity and time stamp of the event |
683 |
*/ |
684 |
void Engine::ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) { |
685 |
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
686 |
|
687 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key]; |
688 |
pKey->KeyPressed = false; // the MIDI key was now released |
689 |
|
690 |
// release voices on this key if needed |
691 |
if (pKey->Active && !pEngineChannel->SustainPedal) { |
692 |
itNoteOffEvent->Type = Event::type_release; // transform event type |
693 |
|
694 |
// move event to the key's own event list |
695 |
RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents); |
696 |
|
697 |
// spawn release triggered voice(s) if needed |
698 |
if (pKey->ReleaseTrigger) { |
699 |
// first, get total amount of required voices (dependant on amount of layers) |
700 |
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOffEventOnKeyList->Param.Note.Key); |
701 |
if (pRegion) { |
702 |
int voicesRequired = pRegion->Layers; |
703 |
|
704 |
// MIDI note-on velocity is used instead of note-off velocity |
705 |
itNoteOffEventOnKeyList->Param.Note.Velocity = pKey->Velocity; |
706 |
|
707 |
// now launch the required amount of voices |
708 |
for (int i = 0; i < voicesRequired; i++) |
709 |
LaunchVoice(pEngineChannel, itNoteOffEventOnKeyList, i, true, false, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples |
710 |
} |
711 |
pKey->ReleaseTrigger = false; |
712 |
} |
713 |
|
714 |
// if neither a voice was spawned or postponed then remove note off event from key again |
715 |
if (!pKey->Active && !pKey->VoiceTheftsQueued) |
716 |
pKey->pEvents->free(itNoteOffEventOnKeyList); |
717 |
} |
718 |
} |
719 |
|
720 |
/** |
721 |
* Moves pitchbend event from the general (input) event list to the pitch |
722 |
* event list. |
723 |
* |
724 |
* @param pEngineChannel - engine channel on which this event occured on |
725 |
* @param itPitchbendEvent - absolute pitch value and time stamp of the event |
726 |
*/ |
727 |
void Engine::ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent) { |
728 |
pEngineChannel->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value |
729 |
itPitchbendEvent.moveToEndOf(pEngineChannel->pSynthesisEvents[Event::destination_vco]); |
730 |
} |
731 |
|
732 |
/** |
733 |
* Allocates and triggers a new voice. This method will usually be |
734 |
* called by the ProcessNoteOn() method and by the voices itself |
735 |
* (e.g. to spawn further voices on the same key for layered sounds). |
736 |
* |
737 |
* @param pEngineChannel - engine channel on which this event occured on |
738 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
739 |
* @param iLayer - layer index for the new voice (optional - only |
740 |
* in case of layered sounds of course) |
741 |
* @param ReleaseTriggerVoice - if new voice is a release triggered voice |
742 |
* (optional, default = false) |
743 |
* @param VoiceStealing - if voice stealing should be performed |
744 |
* when there is no free voice |
745 |
* (optional, default = true) |
746 |
* @param HandleKeyGroupConflicts - if voices should be killed due to a |
747 |
* key group conflict |
748 |
* @returns pointer to new voice or NULL if there was no free voice or |
749 |
* if the voice wasn't triggered (for example when no region is |
750 |
* defined for the given key). |
751 |
*/ |
752 |
Pool<Voice>::Iterator Engine::LaunchVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing, bool HandleKeyGroupConflicts) { |
753 |
int MIDIKey = itNoteOnEvent->Param.Note.Key; |
754 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[MIDIKey]; |
755 |
::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(MIDIKey); |
756 |
|
757 |
// if nothing defined for this key |
758 |
if (!pRegion) return Pool<Voice>::Iterator(); // nothing to do |
759 |
|
760 |
// only mark the first voice of a layered voice (group) to be in a |
761 |
// key group, so the layered voices won't kill each other |
762 |
int iKeyGroup = (iLayer == 0 && !ReleaseTriggerVoice) ? pRegion->KeyGroup : 0; |
763 |
|
764 |
// handle key group (a.k.a. exclusive group) conflicts |
765 |
if (HandleKeyGroupConflicts) { |
766 |
if (iKeyGroup) { // if this voice / key belongs to a key group |
767 |
uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[iKeyGroup]; |
768 |
if (*ppKeyGroup) { // if there's already an active key in that key group |
769 |
midi_key_info_t* pOtherKey = &pEngineChannel->pMIDIKeyInfo[**ppKeyGroup]; |
770 |
// kill all voices on the (other) key |
771 |
RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first(); |
772 |
RTList<Voice>::Iterator end = pOtherKey->pActiveVoices->end(); |
773 |
for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) { |
774 |
if (itVoiceToBeKilled->Type != Voice::type_release_trigger) { |
775 |
itVoiceToBeKilled->Kill(itNoteOnEvent); |
776 |
--VoiceSpawnsLeft; //FIXME: just a hack, we should better check in StealVoice() if the voice was killed due to key conflict |
777 |
} |
778 |
} |
779 |
} |
780 |
} |
781 |
} |
782 |
|
783 |
Voice::type_t VoiceType = Voice::type_normal; |
784 |
|
785 |
// get current dimension values to select the right dimension region |
786 |
//TODO: for stolen voices this dimension region selection block is processed twice, this should be changed |
787 |
//FIXME: controller values for selecting the dimension region here are currently not sample accurate |
788 |
uint DimValues[8] = { 0 }; |
789 |
for (int i = pRegion->Dimensions - 1; i >= 0; i--) { |
790 |
switch (pRegion->pDimensionDefinitions[i].dimension) { |
791 |
case ::gig::dimension_samplechannel: |
792 |
DimValues[i] = 0; //TODO: we currently ignore this dimension |
793 |
break; |
794 |
case ::gig::dimension_layer: |
795 |
DimValues[i] = iLayer; |
796 |
break; |
797 |
case ::gig::dimension_velocity: |
798 |
DimValues[i] = itNoteOnEvent->Param.Note.Velocity; |
799 |
break; |
800 |
case ::gig::dimension_channelaftertouch: |
801 |
DimValues[i] = 0; //TODO: we currently ignore this dimension |
802 |
break; |
803 |
case ::gig::dimension_releasetrigger: |
804 |
VoiceType = (ReleaseTriggerVoice) ? Voice::type_release_trigger : (!iLayer) ? Voice::type_release_trigger_required : Voice::type_normal; |
805 |
DimValues[i] = (uint) ReleaseTriggerVoice; |
806 |
break; |
807 |
case ::gig::dimension_keyboard: |
808 |
DimValues[i] = (uint) pEngineChannel->CurrentKeyDimension; |
809 |
break; |
810 |
case ::gig::dimension_roundrobin: |
811 |
DimValues[i] = (uint) pEngineChannel->pMIDIKeyInfo[MIDIKey].RoundRobinIndex; // incremented for each note on |
812 |
break; |
813 |
case ::gig::dimension_random: |
814 |
RandomSeed = RandomSeed * 1103515245 + 12345; // classic pseudo random number generator |
815 |
DimValues[i] = (uint) RandomSeed >> (32 - pRegion->pDimensionDefinitions[i].bits); // highest bits are most random |
816 |
break; |
817 |
case ::gig::dimension_modwheel: |
818 |
DimValues[i] = pEngineChannel->ControllerTable[1]; |
819 |
break; |
820 |
case ::gig::dimension_breath: |
821 |
DimValues[i] = pEngineChannel->ControllerTable[2]; |
822 |
break; |
823 |
case ::gig::dimension_foot: |
824 |
DimValues[i] = pEngineChannel->ControllerTable[4]; |
825 |
break; |
826 |
case ::gig::dimension_portamentotime: |
827 |
DimValues[i] = pEngineChannel->ControllerTable[5]; |
828 |
break; |
829 |
case ::gig::dimension_effect1: |
830 |
DimValues[i] = pEngineChannel->ControllerTable[12]; |
831 |
break; |
832 |
case ::gig::dimension_effect2: |
833 |
DimValues[i] = pEngineChannel->ControllerTable[13]; |
834 |
break; |
835 |
case ::gig::dimension_genpurpose1: |
836 |
DimValues[i] = pEngineChannel->ControllerTable[16]; |
837 |
break; |
838 |
case ::gig::dimension_genpurpose2: |
839 |
DimValues[i] = pEngineChannel->ControllerTable[17]; |
840 |
break; |
841 |
case ::gig::dimension_genpurpose3: |
842 |
DimValues[i] = pEngineChannel->ControllerTable[18]; |
843 |
break; |
844 |
case ::gig::dimension_genpurpose4: |
845 |
DimValues[i] = pEngineChannel->ControllerTable[19]; |
846 |
break; |
847 |
case ::gig::dimension_sustainpedal: |
848 |
DimValues[i] = pEngineChannel->ControllerTable[64]; |
849 |
break; |
850 |
case ::gig::dimension_portamento: |
851 |
DimValues[i] = pEngineChannel->ControllerTable[65]; |
852 |
break; |
853 |
case ::gig::dimension_sostenutopedal: |
854 |
DimValues[i] = pEngineChannel->ControllerTable[66]; |
855 |
break; |
856 |
case ::gig::dimension_softpedal: |
857 |
DimValues[i] = pEngineChannel->ControllerTable[67]; |
858 |
break; |
859 |
case ::gig::dimension_genpurpose5: |
860 |
DimValues[i] = pEngineChannel->ControllerTable[80]; |
861 |
break; |
862 |
case ::gig::dimension_genpurpose6: |
863 |
DimValues[i] = pEngineChannel->ControllerTable[81]; |
864 |
break; |
865 |
case ::gig::dimension_genpurpose7: |
866 |
DimValues[i] = pEngineChannel->ControllerTable[82]; |
867 |
break; |
868 |
case ::gig::dimension_genpurpose8: |
869 |
DimValues[i] = pEngineChannel->ControllerTable[83]; |
870 |
break; |
871 |
case ::gig::dimension_effect1depth: |
872 |
DimValues[i] = pEngineChannel->ControllerTable[91]; |
873 |
break; |
874 |
case ::gig::dimension_effect2depth: |
875 |
DimValues[i] = pEngineChannel->ControllerTable[92]; |
876 |
break; |
877 |
case ::gig::dimension_effect3depth: |
878 |
DimValues[i] = pEngineChannel->ControllerTable[93]; |
879 |
break; |
880 |
case ::gig::dimension_effect4depth: |
881 |
DimValues[i] = pEngineChannel->ControllerTable[94]; |
882 |
break; |
883 |
case ::gig::dimension_effect5depth: |
884 |
DimValues[i] = pEngineChannel->ControllerTable[95]; |
885 |
break; |
886 |
case ::gig::dimension_none: |
887 |
std::cerr << "gig::Engine::LaunchVoice() Error: dimension=none\n" << std::flush; |
888 |
break; |
889 |
default: |
890 |
std::cerr << "gig::Engine::LaunchVoice() Error: Unknown dimension\n" << std::flush; |
891 |
} |
892 |
} |
893 |
::gig::DimensionRegion* pDimRgn = pRegion->GetDimensionRegionByValue(DimValues); |
894 |
|
895 |
// no need to continue if sample is silent |
896 |
if (!pDimRgn->pSample || !pDimRgn->pSample->SamplesTotal) return Pool<Voice>::Iterator(); |
897 |
|
898 |
// allocate a new voice for the key |
899 |
Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend(); |
900 |
if (itNewVoice) { |
901 |
// launch the new voice |
902 |
if (itNewVoice->Trigger(pEngineChannel, itNoteOnEvent, pEngineChannel->Pitch, pDimRgn, VoiceType, iKeyGroup) < 0) { |
903 |
dmsg(4,("Voice not triggered\n")); |
904 |
pKey->pActiveVoices->free(itNewVoice); |
905 |
} |
906 |
else { // on success |
907 |
--VoiceSpawnsLeft; |
908 |
if (!pKey->Active) { // mark as active key |
909 |
pKey->Active = true; |
910 |
pKey->itSelf = pEngineChannel->pActiveKeys->allocAppend(); |
911 |
*pKey->itSelf = itNoteOnEvent->Param.Note.Key; |
912 |
} |
913 |
if (itNewVoice->KeyGroup) { |
914 |
uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[itNewVoice->KeyGroup]; |
915 |
*ppKeyGroup = &*pKey->itSelf; // put key as the (new) active key to its key group |
916 |
} |
917 |
if (itNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s) |
918 |
return itNewVoice; // success |
919 |
} |
920 |
} |
921 |
else if (VoiceStealing) { |
922 |
// try to steal one voice |
923 |
int result = StealVoice(pEngineChannel, itNoteOnEvent); |
924 |
if (!result) { // voice stolen successfully |
925 |
// put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died |
926 |
RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend(); |
927 |
if (itStealEvent) { |
928 |
*itStealEvent = *itNoteOnEvent; // copy event |
929 |
itStealEvent->Param.Note.Layer = iLayer; |
930 |
itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice; |
931 |
pKey->VoiceTheftsQueued++; |
932 |
} |
933 |
else dmsg(1,("Voice stealing queue full!\n")); |
934 |
} |
935 |
} |
936 |
|
937 |
return Pool<Voice>::Iterator(); // no free voice or error |
938 |
} |
939 |
|
940 |
/** |
941 |
* Will be called by LaunchVoice() method in case there are no free |
942 |
* voices left. This method will select and kill one old voice for |
943 |
* voice stealing and postpone the note-on event until the selected |
944 |
* voice actually died. |
945 |
* |
946 |
* @param pEngineChannel - engine channel on which this event occured on |
947 |
* @param itNoteOnEvent - key, velocity and time stamp of the event |
948 |
* @returns 0 on success, a value < 0 if no active voice could be picked for voice stealing |
949 |
*/ |
950 |
int Engine::StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) { |
951 |
if (VoiceSpawnsLeft <= 0) { |
952 |
dmsg(1,("Max. voice thefts per audio fragment reached (you may raise CONFIG_MAX_VOICES).\n")); |
953 |
return -1; |
954 |
} |
955 |
if (!pEventPool->poolIsEmpty()) { |
956 |
|
957 |
RTList<Voice>::Iterator itSelectedVoice; |
958 |
|
959 |
// Select one voice for voice stealing |
960 |
switch (CONFIG_VOICE_STEAL_ALGO) { |
961 |
|
962 |
// try to pick the oldest voice on the key where the new |
963 |
// voice should be spawned, if there is no voice on that |
964 |
// key, or no voice left to kill, then procceed with |
965 |
// 'oldestkey' algorithm |
966 |
case voice_steal_algo_oldestvoiceonkey: { |
967 |
midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key]; |
968 |
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
969 |
// proceed iterating if voice was created in this fragment cycle |
970 |
while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice; |
971 |
// if we haven't found a voice then proceed with algorithm 'oldestkey' |
972 |
if (itSelectedVoice && itSelectedVoice->IsStealable()) break; |
973 |
} // no break - intentional ! |
974 |
|
975 |
// try to pick the oldest voice on the oldest active key |
976 |
// from the same engine channel |
977 |
// (caution: must stay after 'oldestvoiceonkey' algorithm !) |
978 |
case voice_steal_algo_oldestkey: { |
979 |
// if we already stole in this fragment, try to proceed on same key |
980 |
if (this->itLastStolenVoice) { |
981 |
itSelectedVoice = this->itLastStolenVoice; |
982 |
do { |
983 |
++itSelectedVoice; |
984 |
} while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle |
985 |
// found a "stealable" voice ? |
986 |
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
987 |
// remember which voice we stole, so we can simply proceed on next voice stealing |
988 |
this->itLastStolenVoice = itSelectedVoice; |
989 |
break; // selection succeeded |
990 |
} |
991 |
} |
992 |
// get (next) oldest key |
993 |
RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKey) ? ++this->iuiLastStolenKey : pEngineChannel->pActiveKeys->first(); |
994 |
while (iuiSelectedKey) { |
995 |
midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey]; |
996 |
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
997 |
// proceed iterating if voice was created in this fragment cycle |
998 |
while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice; |
999 |
// found a "stealable" voice ? |
1000 |
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
1001 |
// remember which voice on which key we stole, so we can simply proceed on next voice stealing |
1002 |
this->iuiLastStolenKey = iuiSelectedKey; |
1003 |
this->itLastStolenVoice = itSelectedVoice; |
1004 |
break; // selection succeeded |
1005 |
} |
1006 |
++iuiSelectedKey; // get next oldest key |
1007 |
} |
1008 |
break; |
1009 |
} |
1010 |
|
1011 |
// don't steal anything |
1012 |
case voice_steal_algo_none: |
1013 |
default: { |
1014 |
dmsg(1,("No free voice (voice stealing disabled)!\n")); |
1015 |
return -1; |
1016 |
} |
1017 |
} |
1018 |
|
1019 |
// if we couldn't steal a voice from the same engine channel then |
1020 |
// steal oldest voice on the oldest key from any other engine channel |
1021 |
// (the smaller engine channel number, the higher priority) |
1022 |
if (!itSelectedVoice || !itSelectedVoice->IsStealable()) { |
1023 |
EngineChannel* pSelectedChannel; |
1024 |
int iChannelIndex; |
1025 |
// select engine channel |
1026 |
if (pLastStolenChannel) { |
1027 |
pSelectedChannel = pLastStolenChannel; |
1028 |
iChannelIndex = pSelectedChannel->iEngineIndexSelf; |
1029 |
} else { // pick the engine channel followed by this engine channel |
1030 |
iChannelIndex = (pEngineChannel->iEngineIndexSelf + 1) % engineChannels.size(); |
1031 |
pSelectedChannel = engineChannels[iChannelIndex]; |
1032 |
} |
1033 |
|
1034 |
// if we already stole in this fragment, try to proceed on same key |
1035 |
if (this->itLastStolenVoiceGlobally) { |
1036 |
itSelectedVoice = this->itLastStolenVoiceGlobally; |
1037 |
do { |
1038 |
++itSelectedVoice; |
1039 |
} while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle |
1040 |
} |
1041 |
|
1042 |
#if CONFIG_DEVMODE |
1043 |
EngineChannel* pBegin = pSelectedChannel; // to detect endless loop |
1044 |
#endif // CONFIG_DEVMODE |
1045 |
|
1046 |
// did we find a 'stealable' voice? |
1047 |
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
1048 |
// remember which voice we stole, so we can simply proceed on next voice stealing |
1049 |
this->itLastStolenVoiceGlobally = itSelectedVoice; |
1050 |
} else while (true) { // iterate through engine channels |
1051 |
// get (next) oldest key |
1052 |
RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKeyGlobally) ? ++this->iuiLastStolenKeyGlobally : pSelectedChannel->pActiveKeys->first(); |
1053 |
this->iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); // to prevent endless loop (see line above) |
1054 |
while (iuiSelectedKey) { |
1055 |
midi_key_info_t* pSelectedKey = &pSelectedChannel->pMIDIKeyInfo[*iuiSelectedKey]; |
1056 |
itSelectedVoice = pSelectedKey->pActiveVoices->first(); |
1057 |
// proceed iterating if voice was created in this fragment cycle |
1058 |
while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice; |
1059 |
// found a "stealable" voice ? |
1060 |
if (itSelectedVoice && itSelectedVoice->IsStealable()) { |
1061 |
// remember which voice on which key on which engine channel we stole, so we can simply proceed on next voice stealing |
1062 |
this->iuiLastStolenKeyGlobally = iuiSelectedKey; |
1063 |
this->itLastStolenVoiceGlobally = itSelectedVoice; |
1064 |
this->pLastStolenChannel = pSelectedChannel; |
1065 |
goto stealable_voice_found; // selection succeeded |
1066 |
} |
1067 |
++iuiSelectedKey; // get next key on current engine channel |
1068 |
} |
1069 |
// get next engine channel |
1070 |
iChannelIndex = (iChannelIndex + 1) % engineChannels.size(); |
1071 |
pSelectedChannel = engineChannels[iChannelIndex]; |
1072 |
|
1073 |
#if CONFIG_DEVMODE |
1074 |
if (pSelectedChannel == pBegin) { |
1075 |
dmsg(1,("FATAL ERROR: voice stealing endless loop!\n")); |
1076 |
dmsg(1,("VoiceSpawnsLeft=%d.\n", VoiceSpawnsLeft)); |
1077 |
dmsg(1,("Exiting.\n")); |
1078 |
exit(-1); |
1079 |
} |
1080 |
#endif // CONFIG_DEVMODE |
1081 |
} |
1082 |
} |
1083 |
|
1084 |
// jump point if a 'stealable' voice was found |
1085 |
stealable_voice_found: |
1086 |
|
1087 |
#if CONFIG_DEVMODE |
1088 |
if (!itSelectedVoice->IsActive()) { |
1089 |
dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n")); |
1090 |
return -1; |
1091 |
} |
1092 |
#endif // CONFIG_DEVMODE |
1093 |
|
1094 |
// now kill the selected voice |
1095 |
itSelectedVoice->Kill(itNoteOnEvent); |
1096 |
|
1097 |
--VoiceSpawnsLeft; |
1098 |
|
1099 |
return 0; // success |
1100 |
} |
1101 |
else { |
1102 |
dmsg(1,("Event pool emtpy!\n")); |
1103 |
return -1; |
1104 |
} |
1105 |
} |
1106 |
|
1107 |
/** |
1108 |
* Removes the given voice from the MIDI key's list of active voices. |
1109 |
* This method will be called when a voice went inactive, e.g. because |
1110 |
* it finished to playback its sample, finished its release stage or |
1111 |
* just was killed. |
1112 |
* |
1113 |
* @param pEngineChannel - engine channel on which this event occured on |
1114 |
* @param itVoice - points to the voice to be freed |
1115 |
*/ |
1116 |
void Engine::FreeVoice(EngineChannel* pEngineChannel, Pool<Voice>::Iterator& itVoice) { |
1117 |
if (itVoice) { |
1118 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoice->MIDIKey]; |
1119 |
|
1120 |
uint keygroup = itVoice->KeyGroup; |
1121 |
|
1122 |
// free the voice object |
1123 |
pVoicePool->free(itVoice); |
1124 |
|
1125 |
// if no other voices left and member of a key group, remove from key group |
1126 |
if (pKey->pActiveVoices->isEmpty() && keygroup) { |
1127 |
uint** ppKeyGroup = &pEngineChannel->ActiveKeyGroups[keygroup]; |
1128 |
if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group |
1129 |
} |
1130 |
} |
1131 |
else std::cerr << "Couldn't release voice! (!itVoice)\n" << std::flush; |
1132 |
} |
1133 |
|
1134 |
/** |
1135 |
* Called when there's no more voice left on a key, this call will |
1136 |
* update the key info respectively. |
1137 |
* |
1138 |
* @param pEngineChannel - engine channel on which this event occured on |
1139 |
* @param pKey - key which is now inactive |
1140 |
*/ |
1141 |
void Engine::FreeKey(EngineChannel* pEngineChannel, midi_key_info_t* pKey) { |
1142 |
if (pKey->pActiveVoices->isEmpty()) { |
1143 |
pKey->Active = false; |
1144 |
pEngineChannel->pActiveKeys->free(pKey->itSelf); // remove key from list of active keys |
1145 |
pKey->itSelf = RTList<uint>::Iterator(); |
1146 |
pKey->ReleaseTrigger = false; |
1147 |
pKey->pEvents->clear(); |
1148 |
dmsg(3,("Key has no more voices now\n")); |
1149 |
} |
1150 |
else dmsg(1,("gig::Engine: Oops, tried to free a key which contains voices.\n")); |
1151 |
} |
1152 |
|
1153 |
/** |
1154 |
* Reacts on supported control change commands (e.g. pitch bend wheel, |
1155 |
* modulation wheel, aftertouch). |
1156 |
* |
1157 |
* @param pEngineChannel - engine channel on which this event occured on |
1158 |
* @param itControlChangeEvent - controller, value and time stamp of the event |
1159 |
*/ |
1160 |
void Engine::ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent) { |
1161 |
dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value)); |
1162 |
|
1163 |
// update controller value in the engine channel's controller table |
1164 |
pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value; |
1165 |
|
1166 |
// move event from the unsorted event list to the control change event list |
1167 |
Pool<Event>::Iterator itControlChangeEventOnCCList = itControlChangeEvent.moveToEndOf(pEngineChannel->pCCEvents); |
1168 |
|
1169 |
switch (itControlChangeEventOnCCList->Param.CC.Controller) { |
1170 |
case 7: { // volume |
1171 |
//TODO: not sample accurate yet |
1172 |
pEngineChannel->GlobalVolume = (float) itControlChangeEventOnCCList->Param.CC.Value / 127.0f; |
1173 |
pEngineChannel->bStatusChanged = true; // engine channel status has changed, so set notify flag |
1174 |
break; |
1175 |
} |
1176 |
case 10: { // panpot |
1177 |
//TODO: not sample accurate yet |
1178 |
const int pan = (int) itControlChangeEventOnCCList->Param.CC.Value - 64; |
1179 |
pEngineChannel->GlobalPanLeft = 1.0f - float(RTMath::Max(pan, 0)) / 63.0f; |
1180 |
pEngineChannel->GlobalPanRight = 1.0f - float(RTMath::Min(pan, 0)) / -64.0f; |
1181 |
break; |
1182 |
} |
1183 |
case 64: { // sustain |
1184 |
if (itControlChangeEventOnCCList->Param.CC.Value >= 64 && !pEngineChannel->SustainPedal) { |
1185 |
dmsg(4,("PEDAL DOWN\n")); |
1186 |
pEngineChannel->SustainPedal = true; |
1187 |
|
1188 |
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
1189 |
|
1190 |
// cancel release process of voices if necessary |
1191 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1192 |
for (; iuiKey; ++iuiKey) { |
1193 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1194 |
if (!pKey->KeyPressed) { |
1195 |
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
1196 |
if (itNewEvent) { |
1197 |
*itNewEvent = *itControlChangeEventOnCCList; // copy event to the key's own event list |
1198 |
itNewEvent->Type = Event::type_cancel_release; // transform event type |
1199 |
} |
1200 |
else dmsg(1,("Event pool emtpy!\n")); |
1201 |
} |
1202 |
} |
1203 |
} |
1204 |
if (itControlChangeEventOnCCList->Param.CC.Value < 64 && pEngineChannel->SustainPedal) { |
1205 |
dmsg(4,("PEDAL UP\n")); |
1206 |
pEngineChannel->SustainPedal = false; |
1207 |
|
1208 |
if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted |
1209 |
|
1210 |
// release voices if their respective key is not pressed |
1211 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1212 |
for (; iuiKey; ++iuiKey) { |
1213 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1214 |
if (!pKey->KeyPressed) { |
1215 |
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
1216 |
if (itNewEvent) { |
1217 |
*itNewEvent = *itControlChangeEventOnCCList; // copy event to the key's own event list |
1218 |
itNewEvent->Type = Event::type_release; // transform event type |
1219 |
} |
1220 |
else dmsg(1,("Event pool emtpy!\n")); |
1221 |
} |
1222 |
} |
1223 |
} |
1224 |
break; |
1225 |
} |
1226 |
|
1227 |
|
1228 |
// Channel Mode Messages |
1229 |
|
1230 |
case 120: { // all sound off |
1231 |
KillAllVoices(pEngineChannel, itControlChangeEventOnCCList); |
1232 |
break; |
1233 |
} |
1234 |
case 121: { // reset all controllers |
1235 |
pEngineChannel->ResetControllers(); |
1236 |
break; |
1237 |
} |
1238 |
case 123: { // all notes off |
1239 |
ReleaseAllVoices(pEngineChannel, itControlChangeEventOnCCList); |
1240 |
break; |
1241 |
} |
1242 |
} |
1243 |
} |
1244 |
|
1245 |
/** |
1246 |
* Reacts on MIDI system exclusive messages. |
1247 |
* |
1248 |
* @param itSysexEvent - sysex data size and time stamp of the sysex event |
1249 |
*/ |
1250 |
void Engine::ProcessSysex(Pool<Event>::Iterator& itSysexEvent) { |
1251 |
RingBuffer<uint8_t>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader(); |
1252 |
|
1253 |
uint8_t exclusive_status, id; |
1254 |
if (!reader.pop(&exclusive_status)) goto free_sysex_data; |
1255 |
if (!reader.pop(&id)) goto free_sysex_data; |
1256 |
if (exclusive_status != 0xF0) goto free_sysex_data; |
1257 |
|
1258 |
switch (id) { |
1259 |
case 0x41: { // Roland |
1260 |
dmsg(3,("Roland Sysex\n")); |
1261 |
uint8_t device_id, model_id, cmd_id; |
1262 |
if (!reader.pop(&device_id)) goto free_sysex_data; |
1263 |
if (!reader.pop(&model_id)) goto free_sysex_data; |
1264 |
if (!reader.pop(&cmd_id)) goto free_sysex_data; |
1265 |
if (model_id != 0x42 /*GS*/) goto free_sysex_data; |
1266 |
if (cmd_id != 0x12 /*DT1*/) goto free_sysex_data; |
1267 |
|
1268 |
// command address |
1269 |
uint8_t addr[3]; // 2 byte addr MSB, followed by 1 byte addr LSB) |
1270 |
const RingBuffer<uint8_t>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later |
1271 |
if (reader.read(&addr[0], 3) != 3) goto free_sysex_data; |
1272 |
if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters |
1273 |
dmsg(3,("\tSystem Parameter\n")); |
1274 |
} |
1275 |
else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters |
1276 |
dmsg(3,("\tCommon Parameter\n")); |
1277 |
} |
1278 |
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1) |
1279 |
dmsg(3,("\tPart Parameter\n")); |
1280 |
switch (addr[2]) { |
1281 |
case 0x40: { // scale tuning |
1282 |
dmsg(3,("\t\tScale Tuning\n")); |
1283 |
uint8_t scale_tunes[12]; // detuning of all 12 semitones of an octave |
1284 |
if (reader.read(&scale_tunes[0], 12) != 12) goto free_sysex_data; |
1285 |
uint8_t checksum; |
1286 |
if (!reader.pop(&checksum)) goto free_sysex_data; |
1287 |
#if CONFIG_ASSERT_GS_SYSEX_CHECKSUM |
1288 |
if (GSCheckSum(checksum_reader, 12)) goto free_sysex_data; |
1289 |
#endif // CONFIG_ASSERT_GS_SYSEX_CHECKSUM |
1290 |
for (int i = 0; i < 12; i++) scale_tunes[i] -= 64; |
1291 |
AdjustScale((int8_t*) scale_tunes); |
1292 |
dmsg(3,("\t\t\tNew scale applied.\n")); |
1293 |
break; |
1294 |
} |
1295 |
} |
1296 |
} |
1297 |
else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2) |
1298 |
} |
1299 |
else if (addr[0] == 0x41) { // Drum Setup Parameters |
1300 |
} |
1301 |
break; |
1302 |
} |
1303 |
} |
1304 |
|
1305 |
free_sysex_data: // finally free sysex data |
1306 |
pSysexBuffer->increment_read_ptr(itSysexEvent->Param.Sysex.Size); |
1307 |
} |
1308 |
|
1309 |
/** |
1310 |
* Calculates the Roland GS sysex check sum. |
1311 |
* |
1312 |
* @param AddrReader - reader which currently points to the first GS |
1313 |
* command address byte of the GS sysex message in |
1314 |
* question |
1315 |
* @param DataSize - size of the GS message data (in bytes) |
1316 |
*/ |
1317 |
uint8_t Engine::GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize) { |
1318 |
RingBuffer<uint8_t>::NonVolatileReader reader = AddrReader; |
1319 |
uint bytes = 3 /*addr*/ + DataSize; |
1320 |
uint8_t addr_and_data[bytes]; |
1321 |
reader.read(&addr_and_data[0], bytes); |
1322 |
uint8_t sum = 0; |
1323 |
for (uint i = 0; i < bytes; i++) sum += addr_and_data[i]; |
1324 |
return 128 - sum % 128; |
1325 |
} |
1326 |
|
1327 |
/** |
1328 |
* Allows to tune each of the twelve semitones of an octave. |
1329 |
* |
1330 |
* @param ScaleTunes - detuning of all twelve semitones (in cents) |
1331 |
*/ |
1332 |
void Engine::AdjustScale(int8_t ScaleTunes[12]) { |
1333 |
memcpy(&this->ScaleTuning[0], &ScaleTunes[0], 12); //TODO: currently not sample accurate |
1334 |
} |
1335 |
|
1336 |
/** |
1337 |
* Releases all voices on an engine channel. All voices will go into |
1338 |
* the release stage and thus it might take some time (e.g. dependant to |
1339 |
* their envelope release time) until they actually die. |
1340 |
* |
1341 |
* @param pEngineChannel - engine channel on which all voices should be released |
1342 |
* @param itReleaseEvent - event which caused this releasing of all voices |
1343 |
*/ |
1344 |
void Engine::ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent) { |
1345 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1346 |
while (iuiKey) { |
1347 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1348 |
++iuiKey; |
1349 |
// append a 'release' event to the key's own event list |
1350 |
RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend(); |
1351 |
if (itNewEvent) { |
1352 |
*itNewEvent = *itReleaseEvent; // copy original event (to the key's event list) |
1353 |
itNewEvent->Type = Event::type_release; // transform event type |
1354 |
} |
1355 |
else dmsg(1,("Event pool emtpy!\n")); |
1356 |
} |
1357 |
} |
1358 |
|
1359 |
/** |
1360 |
* Kills all voices on an engine channel as soon as possible. Voices |
1361 |
* won't get into release state, their volume level will be ramped down |
1362 |
* as fast as possible. |
1363 |
* |
1364 |
* @param pEngineChannel - engine channel on which all voices should be killed |
1365 |
* @param itKillEvent - event which caused this killing of all voices |
1366 |
*/ |
1367 |
void Engine::KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent) { |
1368 |
RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first(); |
1369 |
RTList<uint>::Iterator end = pEngineChannel->pActiveKeys->end(); |
1370 |
while (iuiKey != end) { // iterate through all active keys |
1371 |
midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey]; |
1372 |
++iuiKey; |
1373 |
RTList<Voice>::Iterator itVoice = pKey->pActiveVoices->first(); |
1374 |
RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end(); |
1375 |
for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key |
1376 |
itVoice->Kill(itKillEvent); |
1377 |
--VoiceSpawnsLeft; //FIXME: just a temporary workaround, we should check the cause in StealVoice() instead |
1378 |
} |
1379 |
} |
1380 |
} |
1381 |
|
1382 |
/** |
1383 |
* Initialize the parameter sequence for the modulation destination given by |
1384 |
* by 'dst' with the constant value given by val. |
1385 |
*/ |
1386 |
void Engine::ResetSynthesisParameters(Event::destination_t dst, float val) { |
1387 |
int maxsamples = pAudioOutputDevice->MaxSamplesPerCycle(); |
1388 |
float* m = &pSynthesisParameters[dst][0]; |
1389 |
for (int i = 0; i < maxsamples; i += 4) { |
1390 |
m[i] = val; |
1391 |
m[i+1] = val; |
1392 |
m[i+2] = val; |
1393 |
m[i+3] = val; |
1394 |
} |
1395 |
} |
1396 |
|
1397 |
uint Engine::VoiceCount() { |
1398 |
return ActiveVoiceCount; |
1399 |
} |
1400 |
|
1401 |
uint Engine::VoiceCountMax() { |
1402 |
return ActiveVoiceCountMax; |
1403 |
} |
1404 |
|
1405 |
bool Engine::DiskStreamSupported() { |
1406 |
return true; |
1407 |
} |
1408 |
|
1409 |
uint Engine::DiskStreamCount() { |
1410 |
return (pDiskThread) ? pDiskThread->ActiveStreamCount : 0; |
1411 |
} |
1412 |
|
1413 |
uint Engine::DiskStreamCountMax() { |
1414 |
return (pDiskThread) ? pDiskThread->ActiveStreamCountMax : 0; |
1415 |
} |
1416 |
|
1417 |
String Engine::DiskStreamBufferFillBytes() { |
1418 |
return pDiskThread->GetBufferFillBytes(); |
1419 |
} |
1420 |
|
1421 |
String Engine::DiskStreamBufferFillPercentage() { |
1422 |
return pDiskThread->GetBufferFillPercentage(); |
1423 |
} |
1424 |
|
1425 |
String Engine::EngineName() { |
1426 |
return LS_GIG_ENGINE_NAME; |
1427 |
} |
1428 |
|
1429 |
String Engine::Description() { |
1430 |
return "Gigasampler Engine"; |
1431 |
} |
1432 |
|
1433 |
String Engine::Version() { |
1434 |
String s = "$Revision: 1.50 $"; |
1435 |
return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
1436 |
} |
1437 |
|
1438 |
}} // namespace LinuxSampler::gig |