1 |
/*************************************************************************** |
2 |
* * |
3 |
* LinuxSampler - modular, streaming capable sampler * |
4 |
* * |
5 |
* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
6 |
* Copyright (C) 2005 - 2009 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 |
#ifndef __LS_SAMPLER_H__ |
25 |
#define __LS_SAMPLER_H__ |
26 |
|
27 |
#include <vector> |
28 |
#include <map> |
29 |
#include "EventListeners.h" |
30 |
#include "common/global.h" |
31 |
#include "common/Exception.h" |
32 |
#include "engines/EngineChannel.h" |
33 |
#include "drivers/midi/MidiInputDevice.h" |
34 |
#include "drivers/audio/AudioOutputDevice.h" |
35 |
|
36 |
namespace LinuxSampler { |
37 |
|
38 |
// just symbol prototyping |
39 |
class Sampler; |
40 |
|
41 |
/** @brief LinuxSampler sampler channel |
42 |
* |
43 |
* Encapsulates a channel of a specific sampler engine type, one |
44 |
* connection to a MIDI input device and one connection to an audio |
45 |
* output device. You cannot create an instance of this class on your |
46 |
* own, you have to use the AddSamplerChannel() method of the Sampler |
47 |
* object to create a new sampler channel. |
48 |
*/ |
49 |
class SamplerChannel { |
50 |
public: |
51 |
/** |
52 |
* Assign a sampler engine type to this sampler channel. |
53 |
* |
54 |
* @param EngineType - type of the engine to use |
55 |
* @throws Exception - if \a EngineType is invalid |
56 |
* @see Sampler::AvailableEngineTypes() |
57 |
*/ |
58 |
void SetEngineType(String EngineType) throw (Exception); |
59 |
|
60 |
/** |
61 |
* Connect this sampler channel to an audio output device, that |
62 |
* is an instance of an audio output driver. If this sampler |
63 |
* channel was already connected to an audio output device, then |
64 |
* the old connection will automatically be removed before. |
65 |
* |
66 |
* @param pDevice - audio output device to connect to |
67 |
* @throws Exception in case the audio device is tried to be |
68 |
* changed while the sampler channel is used by a |
69 |
* host plugin (e.g. VST, AU, DSSI, LV2) which |
70 |
* don't allow to change the audio output device |
71 |
*/ |
72 |
void SetAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception); |
73 |
|
74 |
/** |
75 |
* Connect this sampler channel to a MIDI input device. |
76 |
* |
77 |
* @param pDevice - MIDI input device to connect to |
78 |
* @throws Exception in case the MIDI device is tried to be changed |
79 |
* while the sampler channel is being used by a |
80 |
* host plugin (e.g. VST, AU, DSSI, LV2) which |
81 |
* don't allow to change the MIDI port or even |
82 |
* device |
83 |
*/ |
84 |
void SetMidiInputDevice(MidiInputDevice *pDevice) throw (Exception); |
85 |
|
86 |
/** |
87 |
* Connect this sampler channel to a MIDI input port. |
88 |
* |
89 |
* @param MidiPort - MIDI port to connect to |
90 |
* @throws Exception in case the MIDI port is tried to be changed |
91 |
* while the sampler channel is being used by a |
92 |
* host plugin (e.g. VST, AU, DSSI, LV2) which |
93 |
* don't allow to change the MIDI port |
94 |
*/ |
95 |
void SetMidiInputPort(int MidiPort) throw (Exception); |
96 |
|
97 |
/** |
98 |
* Define on which MIDI channel(s) this sampler channel should |
99 |
* listen to. By default, that is after creation of a new |
100 |
* sampler channel, the sampler channel will listen to all MIDI |
101 |
* channels. |
102 |
* |
103 |
* @param MidiChannel - MIDI channel to listen |
104 |
*/ |
105 |
void SetMidiInputChannel(midi_chan_t MidiChannel); |
106 |
|
107 |
/** |
108 |
* Connect this sampler channel to a MIDI input triplet. |
109 |
* |
110 |
* @param pDevice - MIDI input device to connect to |
111 |
* @param iMidiPort - MIDI port to connect to |
112 |
* @param MidiChannel - optional: MIDI channel on which the |
113 |
* sampler channel should listen to |
114 |
* (default: listen on all MIDI channels) |
115 |
* @throws Exception in case the MIDI port is tried to be changed |
116 |
* while the sampler channel is being used by a |
117 |
* host plugin (e.g. VST, AU, DSSI, LV2) which |
118 |
* don't allow to change the MIDI port |
119 |
*/ |
120 |
void SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel = midi_chan_all) throw (Exception); |
121 |
|
122 |
/** |
123 |
* Returns the EngineChannel object that was deployed on this |
124 |
* sampler channel appropriate to the given sampler engine type. |
125 |
* |
126 |
* @returns pointer to engine or NULL if no engine deployed |
127 |
*/ |
128 |
EngineChannel* GetEngineChannel(); |
129 |
|
130 |
/** |
131 |
* Returns the MIDI input channel to which this sampler |
132 |
* channel is currently connected to. |
133 |
* |
134 |
* @returns The MIDI input channel on which the sampler |
135 |
* channel is listening to. |
136 |
*/ |
137 |
midi_chan_t GetMidiInputChannel(); |
138 |
|
139 |
/** |
140 |
* Returns the MIDI input port number to which this sampler |
141 |
* channel is currently connected to. |
142 |
* |
143 |
* @returns MIDI input port number or -1 if not connected |
144 |
*/ |
145 |
int GetMidiInputPort(); |
146 |
|
147 |
/** |
148 |
* Returns the audio output device to which this sampler channel |
149 |
* is currently connected to. |
150 |
* |
151 |
* @returns pointer to audio output device or NULL if not |
152 |
* connected |
153 |
*/ |
154 |
AudioOutputDevice* GetAudioOutputDevice(); |
155 |
|
156 |
/** |
157 |
* Returns the MIDI input device to which this sampler channel |
158 |
* is currently connected to. |
159 |
* |
160 |
* @returns pointer to MIDI input device or NULL if not |
161 |
* connected |
162 |
*/ |
163 |
MidiInputDevice* GetMidiInputDevice(); |
164 |
|
165 |
/** |
166 |
* Returns the index number of this sampler channel within the |
167 |
* Sampler instance. |
168 |
*/ |
169 |
uint Index(); |
170 |
|
171 |
/** Returns the sampler to which this channel belongs */ |
172 |
Sampler* GetSampler(); |
173 |
|
174 |
/////////////////////////////////////////////////////////////// |
175 |
// Event Listener methods |
176 |
|
177 |
/** |
178 |
* Registers the specified listener to be notified |
179 |
* when the engine type of this sampler channel is changed. |
180 |
*/ |
181 |
void AddEngineChangeListener(EngineChangeListener* l); |
182 |
|
183 |
/** |
184 |
* Removes the specified listener. |
185 |
*/ |
186 |
void RemoveEngineChangeListener(EngineChangeListener* l); |
187 |
|
188 |
/** |
189 |
* Removes the specified listener. |
190 |
*/ |
191 |
void RemoveAllEngineChangeListeners(); |
192 |
|
193 |
/** |
194 |
* Notifies listeners that the engine type of this sampler |
195 |
* channel is going to be changed soon. |
196 |
*/ |
197 |
void fireEngineToBeChanged(); |
198 |
|
199 |
/** |
200 |
* Notifies listeners that the engine |
201 |
* type of this sampler channel is changed. |
202 |
*/ |
203 |
void fireEngineChanged(); |
204 |
|
205 |
|
206 |
protected: |
207 |
SamplerChannel(Sampler* pS); |
208 |
virtual ~SamplerChannel(); |
209 |
|
210 |
/** Getting MIDI input device port given its index number. */ |
211 |
MidiInputPort* __GetMidiInputDevicePort(int iMidiPort); |
212 |
|
213 |
Sampler* pSampler; |
214 |
EngineChannel* pEngineChannel; |
215 |
AudioOutputDevice* pAudioOutputDevice; |
216 |
MidiInputDevice* pMidiInputDevice; |
217 |
int iIndex; |
218 |
|
219 |
friend class Sampler; |
220 |
private: |
221 |
int iMidiPort; ///< Don't access directly, read GetMidiInputPort() instead ! |
222 |
midi_chan_t midiChannel; ///< Don't access directly, read GetMidiInputChannel() instead ! |
223 |
ListenerList<EngineChangeListener*> llEngineChangeListeners; |
224 |
}; |
225 |
|
226 |
/** @brief LinuxSampler main class |
227 |
* |
228 |
* This is the toplevel class for a LinuxSampler instance. |
229 |
* |
230 |
* LinuxSampler can have arbitrary numbers of sampler channels. Each |
231 |
* sampler channel can individually be deployed with it's own sampler |
232 |
* engine, connected to an arbitrary MIDI input device and connected to |
233 |
* an arbitrary audio output device. Here an example setup: |
234 |
* @code |
235 |
* S.Channel MIDI in S.Engine Audio out |
236 |
* ------------------------------------------------------------------- |
237 |
* 0 Alsa -> gig::Engine -> Jack |
238 |
* 1 VSTi -> Akai::Engine -> VSTi |
239 |
* 2 Jack -> DLS::Engine -> Jack |
240 |
* 3 Jack -> SF::Engine -> Alsa |
241 |
* |
242 |
* ... (and so on) ... |
243 |
* @endcode |
244 |
* |
245 |
* Note that not all audio and MIDI backends and sampler engines listed |
246 |
* in the example above might already been implemented! |
247 |
* |
248 |
* As you can see in the example setup, LinuxSampler is capable to use |
249 |
* several, different audio output and MIDI input systems |
250 |
* simultaniously at the same time. Here the example setup shown in the |
251 |
* aspect of MIDI input and audio output devices / drivers: |
252 |
* @code |
253 |
* ######################### ######################### |
254 |
* # AudioOutputDeviceJack # # AudioOutputDeviceVSTi # |
255 |
* ######################### ######################### |
256 |
* ^ ^ ^ |
257 |
* /------------>|Sampler Channel 0|-----/ | | |
258 |
* | /--------->|Sampler Channel 1|---------------------/ |
259 |
* | | /------>|Sampler Channel 2|---------/ |
260 |
* | | | /--->|Sampler Channel 3|------------>######################### |
261 |
* | | | | ... (and so on) ... # AudioOutputDeviceAlsa # |
262 |
* | | | | ######################### |
263 |
* | | | \-----------------------------------------------------\ |
264 |
* | | \--------------------------------------------\ | |
265 |
* | \--------------------\ | | |
266 |
* | | | | |
267 |
* ####################### ####################### ####################### |
268 |
* # MidiInputDeviceAlsa # # MidiInputDeviceVSTi # # MidiInputDeviceJack # |
269 |
* ####################### ####################### ####################### |
270 |
* @endcode |
271 |
* |
272 |
* As you can see in this example setup, one device (that is midi input |
273 |
* driver / audio output driver) can be connected multiple times to |
274 |
* different sampler channels. |
275 |
* |
276 |
* It's even possible to create multiple instances of the same driver, for |
277 |
* example multiple instances of the Alsa output driver to use multiple |
278 |
* sound cards at the same time, or multiple instances of the JACK audio |
279 |
* output driver to leverage SMP systems or boxes with several hard discs. |
280 |
*/ |
281 |
class Sampler { |
282 |
public: |
283 |
/** |
284 |
* Constructor. Create a LinuxSampler instance. |
285 |
*/ |
286 |
Sampler(); |
287 |
|
288 |
/** |
289 |
* Destructor. |
290 |
*/ |
291 |
virtual ~Sampler(); |
292 |
|
293 |
/** |
294 |
* Returns the number of sampler channels currently allocated. |
295 |
*/ |
296 |
uint SamplerChannels(); |
297 |
|
298 |
/** |
299 |
* Create and add a new sampler channel to this Sampler |
300 |
* instance. For race condition reasons the new channel will use |
301 |
* an index past the last already existing sampler channel |
302 |
* index (in case the index limit was not reached yet, otherwise |
303 |
* a free index starting from 0 is searched). |
304 |
* |
305 |
* @returns pointer to new sampler channel |
306 |
*/ |
307 |
SamplerChannel* AddSamplerChannel(); |
308 |
|
309 |
/** |
310 |
* Returns the sampler channel of the given sampler channel |
311 |
* index. |
312 |
* |
313 |
* @returns pointer to sought sampler channel |
314 |
*/ |
315 |
SamplerChannel* GetSamplerChannel(uint uiSamplerChannel); |
316 |
|
317 |
/** |
318 |
* Returns all created sampler channels. |
319 |
*/ |
320 |
std::map<uint, SamplerChannel*> GetSamplerChannels(); |
321 |
|
322 |
/** |
323 |
* Destroy and remove the given sampler channel from this |
324 |
* Sampler instance. |
325 |
* |
326 |
* @param pSamplerChannel - pointer to sampler channel to remove |
327 |
*/ |
328 |
void RemoveSamplerChannel(SamplerChannel* pSamplerChannel); |
329 |
|
330 |
/** |
331 |
* Destroy and remove the given sampler channel from this |
332 |
* Sampler instance. |
333 |
* |
334 |
* @param uiSamplerChannel - index of the sampler channel to |
335 |
* remove |
336 |
*/ |
337 |
void RemoveSamplerChannel(uint uiSamplerChannel); |
338 |
|
339 |
/** |
340 |
* Destroy and remove all sampler channels from this |
341 |
* Sampler instance. |
342 |
*/ |
343 |
void RemoveAllSamplerChannels(); |
344 |
|
345 |
/** |
346 |
* Returns the names of all available audio output drivers. |
347 |
*/ |
348 |
std::vector<String> AvailableAudioOutputDrivers(); |
349 |
|
350 |
/** |
351 |
* Returns the names of all available MIDI input drivers. |
352 |
*/ |
353 |
std::vector<String> AvailableMidiInputDrivers(); |
354 |
|
355 |
/** |
356 |
* Returns the names of all available sampler engine types. |
357 |
* @see SamplerChannel::SetEngineType() |
358 |
*/ |
359 |
std::vector<String> AvailableEngineTypes(); |
360 |
|
361 |
/** |
362 |
* Create an audio output device. |
363 |
* |
364 |
* @param AudioDriver - name of the audio driver |
365 |
* @param Parameters - eventually needed driver parameters to |
366 |
* create the device |
367 |
* @returns pointer to created audio output device |
368 |
* @throws Exception if device could not be created |
369 |
*/ |
370 |
AudioOutputDevice* CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (Exception); |
371 |
|
372 |
/** |
373 |
* Create a midi input device. |
374 |
* |
375 |
* @param MidiDriver - name of the midi driver |
376 |
* @param Parameters - eventually needed driver parameters to |
377 |
* create the device |
378 |
* @returns pointer to created midi input device |
379 |
* @throws Exception if device could not be created |
380 |
*/ |
381 |
MidiInputDevice* CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception); |
382 |
|
383 |
/** |
384 |
* Returns the number of all created audio output devices. |
385 |
*/ |
386 |
uint AudioOutputDevices(); |
387 |
|
388 |
/** |
389 |
* Returns the number of all created MIDI input devices. |
390 |
*/ |
391 |
uint MidiInputDevices(); |
392 |
|
393 |
/** |
394 |
* Returns all created audio output devices. |
395 |
*/ |
396 |
std::map<uint, AudioOutputDevice*> GetAudioOutputDevices(); |
397 |
|
398 |
/** |
399 |
* Returns all created MIDI input devices. |
400 |
*/ |
401 |
std::map<uint, MidiInputDevice*> GetMidiInputDevices(); |
402 |
|
403 |
/** |
404 |
* Destroy the given audio output device and takes care if there |
405 |
* are still sampler engines connected to this device, etc. |
406 |
* |
407 |
* @throws Exception if sampler channels are still |
408 |
* connected to the device |
409 |
*/ |
410 |
void DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception); |
411 |
|
412 |
/** |
413 |
* Destroy all audio output devices and takes care if there |
414 |
* are still sampler engines connected to devices, etc. |
415 |
* |
416 |
* Note: non-autonomous devices, that is devices associated with |
417 |
* host plugin instances like VST, AU, DSSI, LV2 are not |
418 |
* destroyed by this method. |
419 |
* |
420 |
* @throws Exception if sampler channels are still |
421 |
* connected to device |
422 |
*/ |
423 |
void DestroyAllAudioOutputDevices() throw (Exception); |
424 |
|
425 |
/** |
426 |
* Destroy the given MIDI input device and takes care if there |
427 |
* are still sampler engines connected to this device, etc. |
428 |
* |
429 |
* @throws Exception if sampler channels are still |
430 |
* connected to the device |
431 |
*/ |
432 |
void DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception); |
433 |
|
434 |
/** |
435 |
* Destroy all MIDI input devices and take care if there |
436 |
* are still sampler engines connected to device, etc. |
437 |
* |
438 |
* Note: non-autonomous devices, that is devices associated with |
439 |
* host plugin instances like VST, AU, DSSI, LV2 are not |
440 |
* destroyed by this method. |
441 |
* |
442 |
* @throws Exception if sampler channels are still |
443 |
* connected to device |
444 |
*/ |
445 |
void DestroyAllMidiInputDevices() throw (Exception); |
446 |
|
447 |
/** |
448 |
* Gets the current number of all active streams. |
449 |
* @returns The current number of all active streams. |
450 |
*/ |
451 |
int GetDiskStreamCount(); |
452 |
|
453 |
/** |
454 |
* Gets the current number of all active voices. |
455 |
* @returns The current number of all active voices. |
456 |
*/ |
457 |
int GetVoiceCount(); |
458 |
|
459 |
/** |
460 |
* Reset the whole sampler. Destroy all engines, sampler |
461 |
* channels, MIDI input devices and audio output devices. |
462 |
*/ |
463 |
void Reset(); |
464 |
|
465 |
/////////////////////////////////////////////////////////////// |
466 |
// Event Listener methods |
467 |
|
468 |
/** |
469 |
* Registers the specified listener to be notified |
470 |
* when the number of sampler chanels is changed. |
471 |
*/ |
472 |
void AddChannelCountListener(ChannelCountListener* l); |
473 |
|
474 |
/** |
475 |
* Removes the specified listener. |
476 |
*/ |
477 |
void RemoveChannelCountListener(ChannelCountListener* l); |
478 |
|
479 |
/** |
480 |
* Registers the specified listener to be notified |
481 |
* when the number of audio output devices is changed. |
482 |
*/ |
483 |
void AddAudioDeviceCountListener(AudioDeviceCountListener* l); |
484 |
|
485 |
/** |
486 |
* Removes the specified listener. |
487 |
*/ |
488 |
void RemoveAudioDeviceCountListener(AudioDeviceCountListener* l); |
489 |
|
490 |
/** |
491 |
* Registers the specified listener to be notified |
492 |
* when the number of MIDI input devices is changed. |
493 |
*/ |
494 |
void AddMidiDeviceCountListener(MidiDeviceCountListener* l); |
495 |
|
496 |
/** |
497 |
* Removes the specified listener. |
498 |
*/ |
499 |
void RemoveMidiDeviceCountListener(MidiDeviceCountListener* l); |
500 |
|
501 |
/** |
502 |
* Registers the specified listener to be notified when the number |
503 |
* of active voices in a particular sampler channel is changed. |
504 |
*/ |
505 |
void AddVoiceCountListener(VoiceCountListener* l); |
506 |
|
507 |
/** |
508 |
* Removes the specified listener. |
509 |
*/ |
510 |
void RemoveVoiceCountListener(VoiceCountListener* l); |
511 |
|
512 |
/** |
513 |
* Notifies listeners that the number of active voices |
514 |
* on the specified sampler channel is changed. |
515 |
* @param ChannelId The numerical ID of the sampler channel. |
516 |
* @param NewCount The new number of active voices. |
517 |
*/ |
518 |
void fireVoiceCountChanged(int ChannelId, int NewCount); |
519 |
|
520 |
/** |
521 |
* Registers the specified listener to be notified when the number |
522 |
* of active disk streams in a particular sampler channel is changed. |
523 |
*/ |
524 |
void AddStreamCountListener(StreamCountListener* l); |
525 |
|
526 |
/** |
527 |
* Removes the specified listener. |
528 |
*/ |
529 |
void RemoveStreamCountListener(StreamCountListener* l); |
530 |
|
531 |
/** |
532 |
* Notifies listeners that the number of active disk streams |
533 |
* on the specified sampler channel is changed. |
534 |
* @param ChannelId The numerical ID of the sampler channel. |
535 |
* @param NewCount The new number of active disk streams. |
536 |
*/ |
537 |
void fireStreamCountChanged(int ChannelId, int NewCount); |
538 |
|
539 |
/** |
540 |
* Registers the specified listener to be |
541 |
* notified when the fill state of the disk stream |
542 |
* buffers on a specific sampler channel is changed. |
543 |
*/ |
544 |
void AddBufferFillListener(BufferFillListener* l); |
545 |
|
546 |
/** |
547 |
* Removes the specified listener. |
548 |
*/ |
549 |
void RemoveBufferFillListener(BufferFillListener* l); |
550 |
|
551 |
/** |
552 |
* Notifies listeners that the fill state of the disk stream |
553 |
* buffers on the specified sampler channel is changed. |
554 |
* @param ChannelId The numerical ID of the sampler channel. |
555 |
* @param FillData The buffer fill data for the specified sampler channel. |
556 |
*/ |
557 |
void fireBufferFillChanged(int ChannelId, String FillData); |
558 |
|
559 |
/** |
560 |
* Registers the specified listener to be notified |
561 |
* when total number of active voices is changed. |
562 |
*/ |
563 |
void AddTotalVoiceCountListener(TotalVoiceCountListener* l); |
564 |
|
565 |
/** |
566 |
* Removes the specified listener. |
567 |
*/ |
568 |
void RemoveTotalVoiceCountListener(TotalVoiceCountListener* l); |
569 |
|
570 |
/** |
571 |
* Notifies listeners that the total number of active voices is changed. |
572 |
* @param NewCount The new number of active voices. |
573 |
*/ |
574 |
void fireTotalVoiceCountChanged(int NewCount); |
575 |
|
576 |
/** |
577 |
* Registers the specified listener to be notified when the number |
578 |
* of total streams is changed. |
579 |
*/ |
580 |
void AddTotalStreamCountListener(TotalStreamCountListener* l); |
581 |
|
582 |
/** |
583 |
* Removes the specified listener. |
584 |
*/ |
585 |
void RemoveTotalStreamCountListener(TotalStreamCountListener* l); |
586 |
|
587 |
/** |
588 |
* Notifies listeners that the total number of total streams changed. |
589 |
* @param NewCount The new number of total streams. |
590 |
*/ |
591 |
void fireTotalStreamCountChanged(int NewCount); |
592 |
|
593 |
/** |
594 |
* Registers the specified listener to be notified when the number |
595 |
* of effect sends on a particular sampler channel is changed. |
596 |
*/ |
597 |
void AddFxSendCountListener(FxSendCountListener* l); |
598 |
|
599 |
/** |
600 |
* Removes the specified listener. |
601 |
*/ |
602 |
void RemoveFxSendCountListener(FxSendCountListener* l); |
603 |
|
604 |
/** |
605 |
* Notifies listeners about the current number of voices, |
606 |
* streams and total voices, and the current fill state of |
607 |
* the disk stream buffers. |
608 |
*/ |
609 |
void fireStatistics(); |
610 |
|
611 |
/////////////////////////////////////////////////////////////// |
612 |
// system specific methods |
613 |
|
614 |
/** |
615 |
* Advise the FPU to treat denormal floating point numbers as |
616 |
* zero, to avoid severe performance penalty when dealing with |
617 |
* such extreme floating point values. |
618 |
* |
619 |
* @returns @c true if FPU supports it, @c false otherwise |
620 |
*/ |
621 |
static bool EnableDenormalsAreZeroMode(); |
622 |
|
623 |
#if defined(WIN32) |
624 |
/** |
625 |
* Gets the directory where the liblinuxsampler dll is located. |
626 |
* Note: this method is currently only available for Windows. |
627 |
* @returns installation directory |
628 |
*/ |
629 |
static String GetInstallDir(); |
630 |
#endif |
631 |
protected: |
632 |
/** |
633 |
* Notifies listeners that the number of sampler channels has been changed. |
634 |
* @param NewCount The new number of sampler channels. |
635 |
*/ |
636 |
void fireChannelCountChanged(int NewCount); |
637 |
|
638 |
/** |
639 |
* Notifies listeners that the specified sampler channel has just |
640 |
* been added. |
641 |
* @param pChannel The new sampler channel. |
642 |
*/ |
643 |
void fireChannelAdded(SamplerChannel* pChannel); |
644 |
|
645 |
/** |
646 |
* Notifies listeners that the specified sampler channel is |
647 |
* going to be removed soon. |
648 |
* @param pChannel sampler channel to be removed. |
649 |
*/ |
650 |
void fireChannelToBeRemoved(SamplerChannel* pChannel); |
651 |
|
652 |
/** |
653 |
* Notifies listeners that the number of audio output devices has been changed. |
654 |
* @param NewCount The new number of audio output devices. |
655 |
*/ |
656 |
void fireAudioDeviceCountChanged(int NewCount); |
657 |
|
658 |
/** |
659 |
* Notifies listeners that the number of MIDI input devices has been changed. |
660 |
* @param NewCount The new number of MIDI input devices. |
661 |
*/ |
662 |
void fireMidiDeviceCountChanged(int NewCount); |
663 |
|
664 |
/** |
665 |
* Notifies listeners that the supplied MIDI input device is |
666 |
* going to be destroyed soon. |
667 |
* @param pDevice MIDI input device to be destroyed |
668 |
*/ |
669 |
void fireMidiDeviceToBeDestroyed(MidiInputDevice* pDevice); |
670 |
|
671 |
/** |
672 |
* Notifies listeners that the supplied MIDI input device was |
673 |
* just created. |
674 |
* @param pDevice new MIDI input device |
675 |
*/ |
676 |
void fireMidiDeviceCreated(MidiInputDevice* pDevice); |
677 |
|
678 |
/** |
679 |
* Notifies listeners that the number of effect sends |
680 |
* on a particular sampler channel is changed. |
681 |
* @param ChannelId The numerical ID of the sampler channel. |
682 |
* @param NewCount The new number of sampler channels. |
683 |
*/ |
684 |
void fireFxSendCountChanged(int ChannelId, int NewCount); |
685 |
|
686 |
typedef std::map<uint, SamplerChannel*> SamplerChannelMap; |
687 |
|
688 |
SamplerChannelMap mSamplerChannels; ///< contains all created sampler channels |
689 |
|
690 |
// statistics cache |
691 |
uint uiOldTotalVoiceCount; |
692 |
uint uiOldTotalStreamCount; |
693 |
std::map<uint, uint> mOldVoiceCounts; |
694 |
std::map<uint, uint> mOldStreamCounts; |
695 |
|
696 |
friend class SamplerChannel; |
697 |
|
698 |
private: |
699 |
ListenerList<ChannelCountListener*> llChannelCountListeners; |
700 |
ListenerList<AudioDeviceCountListener*> llAudioDeviceCountListeners; |
701 |
ListenerList<MidiDeviceCountListener*> llMidiDeviceCountListeners; |
702 |
ListenerList<VoiceCountListener*> llVoiceCountListeners; |
703 |
ListenerList<StreamCountListener*> llStreamCountListeners; |
704 |
ListenerList<BufferFillListener*> llBufferFillListeners; |
705 |
ListenerList<TotalStreamCountListener*> llTotalStreamCountListeners; |
706 |
ListenerList<TotalVoiceCountListener*> llTotalVoiceCountListeners; |
707 |
ListenerList<FxSendCountListener*> llFxSendCountListeners; |
708 |
|
709 |
class EventHandler : public EngineChangeListener, public FxSendCountListener { |
710 |
public: |
711 |
void SetSampler(Sampler* pSampler) { this->pSampler = pSampler; } |
712 |
|
713 |
/** |
714 |
* Invoked when the engine type of the specified sampler |
715 |
* channel is going to be changed soon. |
716 |
* @param ChannelId The numerical ID of the sampler channel |
717 |
*/ |
718 |
virtual void EngineToBeChanged(int ChannelId); |
719 |
|
720 |
/** |
721 |
* Invoked when the engine type of the |
722 |
* specified sampler channel is changed. |
723 |
* @param ChannelId The numerical ID of the sampler |
724 |
* channel, which engine type has been changed. |
725 |
*/ |
726 |
virtual void EngineChanged(int ChannelId); |
727 |
|
728 |
/** |
729 |
* Invoked when the number of effect sends |
730 |
* on the specified sampler channel has changed. |
731 |
* @param ChannelId The numerical ID of the sampler channel. |
732 |
* @param NewCount The new number of effect sends. |
733 |
*/ |
734 |
virtual void FxSendCountChanged(int ChannelId, int NewCount); |
735 |
|
736 |
private: |
737 |
Sampler* pSampler; |
738 |
} eventHandler; |
739 |
}; |
740 |
} |
741 |
|
742 |
#endif // __LS_SAMPLER_H__ |