1 |
iliev |
2012 |
/*************************************************************************** |
2 |
|
|
* * |
3 |
|
|
* LinuxSampler - modular, streaming capable sampler * |
4 |
|
|
* * |
5 |
|
|
* Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck * |
6 |
persson |
2072 |
* Copyright (C) 2005-2008 Christian Schoenebeck * |
7 |
|
|
* Copyright (C) 2009-2010 Christian Schoenebeck and Grigor Iliev * |
8 |
iliev |
2012 |
* * |
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_ENGINECHANNELBASE_H__ |
26 |
|
|
#define __LS_ENGINECHANNELBASE_H__ |
27 |
|
|
|
28 |
|
|
#include "AbstractEngineChannel.h" |
29 |
|
|
#include "common/MidiKeyboardManager.h" |
30 |
|
|
#include "common/Voice.h" |
31 |
|
|
#include "../common/ResourceManager.h" |
32 |
|
|
|
33 |
|
|
namespace LinuxSampler { |
34 |
|
|
/// Command used by the instrument loader thread to |
35 |
|
|
/// request an instrument change on a channel. |
36 |
|
|
template <class R /* Region */, class I /* Instrument */> |
37 |
|
|
class InstrumentChangeCmd { |
38 |
|
|
public: |
39 |
|
|
bool bChangeInstrument; ///< Set to true by the loader when the channel should change instrument. |
40 |
|
|
I* pInstrument; ///< The new instrument. Also used by the loader to read the previously loaded instrument. |
41 |
|
|
RTList<R*>* pRegionsInUse; ///< List of dimension regions in use by the currently loaded instrument. Continuously updated by the audio thread. |
42 |
|
|
}; |
43 |
|
|
|
44 |
|
|
template<class R> |
45 |
|
|
class RegionPools { |
46 |
|
|
public: |
47 |
|
|
virtual Pool<R*>* GetRegionPool(int index) = 0; |
48 |
|
|
}; |
49 |
|
|
|
50 |
|
|
template<class V> |
51 |
|
|
class VoicePool { |
52 |
|
|
public: |
53 |
|
|
virtual Pool<V>* GetVoicePool() = 0; |
54 |
|
|
}; |
55 |
|
|
|
56 |
|
|
template <class V /* Voice */, class R /* Region */, class I /* Instrument */> |
57 |
|
|
class EngineChannelBase: public AbstractEngineChannel, public MidiKeyboardManager<V>, public ResourceConsumer<I> { |
58 |
|
|
public: |
59 |
|
|
typedef typename RTList<R*>::Iterator RTListRegionIterator; |
60 |
|
|
typedef typename MidiKeyboardManager<V>::MidiKey MidiKey; |
61 |
|
|
|
62 |
|
|
virtual void HandBack(I* Instrument) { |
63 |
|
|
ResourceManager<InstrumentManager::instrument_id_t, I>* mgr = |
64 |
|
|
dynamic_cast<ResourceManager<InstrumentManager::instrument_id_t, I>*>(pEngine->GetInstrumentManager()); |
65 |
|
|
mgr->HandBack(Instrument, this); |
66 |
|
|
} |
67 |
|
|
|
68 |
|
|
virtual void ClearRegionsInUse() { |
69 |
|
|
{ |
70 |
|
|
InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate(); |
71 |
|
|
if(cmd.pRegionsInUse != NULL) cmd.pRegionsInUse->clear(); |
72 |
|
|
} |
73 |
|
|
{ |
74 |
|
|
InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.SwitchConfig(); |
75 |
|
|
if(cmd.pRegionsInUse != NULL) cmd.pRegionsInUse->clear(); |
76 |
|
|
} |
77 |
|
|
} |
78 |
|
|
|
79 |
|
|
virtual void ResetRegionsInUse(Pool<R*>* pRegionPool[]) { |
80 |
|
|
DeleteRegionsInUse(); |
81 |
|
|
AllocateRegionsInUse(pRegionPool); |
82 |
|
|
} |
83 |
|
|
|
84 |
|
|
virtual void DeleteRegionsInUse() { |
85 |
|
|
{ |
86 |
|
|
InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate(); |
87 |
|
|
if(cmd.pRegionsInUse != NULL) { |
88 |
|
|
delete cmd.pRegionsInUse; |
89 |
|
|
cmd.pRegionsInUse = NULL; |
90 |
|
|
} |
91 |
|
|
} |
92 |
|
|
{ |
93 |
|
|
InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.SwitchConfig(); |
94 |
|
|
if(cmd.pRegionsInUse != NULL) { |
95 |
|
|
delete cmd.pRegionsInUse; |
96 |
|
|
cmd.pRegionsInUse = NULL; |
97 |
|
|
} |
98 |
|
|
} |
99 |
|
|
} |
100 |
|
|
|
101 |
|
|
virtual void AllocateRegionsInUse(Pool<R*>* pRegionPool[]) { |
102 |
|
|
{ |
103 |
|
|
InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate(); |
104 |
|
|
cmd.pRegionsInUse = new RTList<R*>(pRegionPool[0]); |
105 |
|
|
} |
106 |
|
|
{ |
107 |
|
|
InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.SwitchConfig(); |
108 |
|
|
cmd.pRegionsInUse = new RTList<R*>(pRegionPool[1]); |
109 |
|
|
} |
110 |
|
|
} |
111 |
|
|
|
112 |
|
|
virtual void Connect(AudioOutputDevice* pAudioOut) { |
113 |
|
|
if (pEngine) { |
114 |
|
|
if (pEngine->pAudioOutputDevice == pAudioOut) return; |
115 |
|
|
DisconnectAudioOutputDevice(); |
116 |
|
|
} |
117 |
|
|
pEngine = AbstractEngine::AcquireEngine(this, pAudioOut); |
118 |
|
|
ResetInternal(); |
119 |
|
|
pEvents = new RTList<Event>(pEngine->pEventPool); |
120 |
|
|
|
121 |
|
|
RegionPools<R>* pRegionPool = dynamic_cast<RegionPools<R>*>(pEngine); |
122 |
|
|
// reset the instrument change command struct (need to be done |
123 |
|
|
// twice, as it is double buffered) |
124 |
|
|
{ |
125 |
|
|
InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate(); |
126 |
|
|
cmd.pRegionsInUse = new RTList<R*>(pRegionPool->GetRegionPool(0)); |
127 |
|
|
cmd.pInstrument = 0; |
128 |
|
|
cmd.bChangeInstrument = false; |
129 |
|
|
} |
130 |
|
|
{ |
131 |
|
|
InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.SwitchConfig(); |
132 |
|
|
cmd.pRegionsInUse = new RTList<R*>(pRegionPool->GetRegionPool(1)); |
133 |
|
|
cmd.pInstrument = 0; |
134 |
|
|
cmd.bChangeInstrument = false; |
135 |
|
|
} |
136 |
|
|
|
137 |
|
|
if (pInstrument != NULL) { |
138 |
|
|
pInstrument = NULL; |
139 |
|
|
InstrumentStat = -1; |
140 |
|
|
InstrumentIdx = -1; |
141 |
|
|
InstrumentIdxName = ""; |
142 |
|
|
InstrumentFile = ""; |
143 |
|
|
bStatusChanged = true; |
144 |
|
|
} |
145 |
|
|
|
146 |
|
|
VoicePool<V>* pVoicePool = dynamic_cast<VoicePool<V>*>(pEngine); |
147 |
|
|
MidiKeyboardManager<V>::AllocateActiveVoices(pVoicePool->GetVoicePool()); |
148 |
|
|
MidiKeyboardManager<V>::AllocateEvents(pEngine->pEventPool); |
149 |
|
|
|
150 |
|
|
AudioDeviceChannelLeft = 0; |
151 |
|
|
AudioDeviceChannelRight = 1; |
152 |
|
|
if (fxSends.empty()) { // render directly into the AudioDevice's output buffers |
153 |
|
|
pChannelLeft = pAudioOut->Channel(AudioDeviceChannelLeft); |
154 |
|
|
pChannelRight = pAudioOut->Channel(AudioDeviceChannelRight); |
155 |
|
|
} else { // use local buffers for rendering and copy later |
156 |
|
|
// ensure the local buffers have the correct size |
157 |
|
|
if (pChannelLeft) delete pChannelLeft; |
158 |
|
|
if (pChannelRight) delete pChannelRight; |
159 |
|
|
pChannelLeft = new AudioChannel(0, pAudioOut->MaxSamplesPerCycle()); |
160 |
|
|
pChannelRight = new AudioChannel(1, pAudioOut->MaxSamplesPerCycle()); |
161 |
|
|
} |
162 |
|
|
if (pEngine->EngineDisabled.GetUnsafe()) pEngine->Enable(); |
163 |
|
|
MidiInputPort::AddSysexListener(pEngine); |
164 |
|
|
} |
165 |
|
|
|
166 |
|
|
virtual void DisconnectAudioOutputDevice() { |
167 |
|
|
if (pEngine) { // if clause to prevent disconnect loops |
168 |
|
|
|
169 |
|
|
ResetInternal(); |
170 |
|
|
|
171 |
|
|
DeleteRegionsInUse(); |
172 |
|
|
|
173 |
|
|
InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate(); |
174 |
|
|
if (cmd.pInstrument) { |
175 |
|
|
// release the currently loaded instrument |
176 |
|
|
HandBack(cmd.pInstrument); |
177 |
|
|
} |
178 |
|
|
|
179 |
|
|
if (pEvents) { |
180 |
|
|
delete pEvents; |
181 |
|
|
pEvents = NULL; |
182 |
|
|
} |
183 |
|
|
|
184 |
|
|
MidiKeyboardManager<V>::DeleteActiveVoices(); |
185 |
|
|
MidiKeyboardManager<V>::DeleteEvents(); |
186 |
persson |
2114 |
DeleteGroupEventLists(); |
187 |
iliev |
2012 |
|
188 |
|
|
AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice; |
189 |
|
|
pEngine = NULL; |
190 |
|
|
AbstractEngine::FreeEngine(this, oldAudioDevice); |
191 |
|
|
AudioDeviceChannelLeft = -1; |
192 |
|
|
AudioDeviceChannelRight = -1; |
193 |
|
|
if (!fxSends.empty()) { // free the local rendering buffers |
194 |
|
|
if (pChannelLeft) delete pChannelLeft; |
195 |
|
|
if (pChannelRight) delete pChannelRight; |
196 |
|
|
} |
197 |
|
|
pChannelLeft = NULL; |
198 |
|
|
pChannelRight = NULL; |
199 |
|
|
} |
200 |
|
|
} |
201 |
|
|
|
202 |
|
|
class ClearEventListsHandler : public MidiKeyboardManager<V>::VoiceHandlerBase { |
203 |
|
|
public: |
204 |
|
|
virtual bool Process(MidiKey* pMidiKey) { pMidiKey->pEvents->clear(); return false; } |
205 |
|
|
}; |
206 |
|
|
|
207 |
|
|
void ClearEventLists() { |
208 |
|
|
pEvents->clear(); |
209 |
|
|
// empty MIDI key specific event lists |
210 |
|
|
ClearEventListsHandler handler; |
211 |
|
|
ProcessActiveVoices(&handler); |
212 |
persson |
2114 |
|
213 |
|
|
// empty exclusive group specific event lists |
214 |
|
|
ClearGroupEventLists(); |
215 |
iliev |
2012 |
} |
216 |
|
|
|
217 |
|
|
// implementation of abstract methods derived from interface class 'InstrumentConsumer' |
218 |
|
|
|
219 |
|
|
/** |
220 |
|
|
* Will be called by the InstrumentResourceManager when the instrument |
221 |
|
|
* we are currently using on this EngineChannel is going to be updated, |
222 |
|
|
* so we can stop playback before that happens. |
223 |
|
|
*/ |
224 |
|
|
virtual void ResourceToBeUpdated(I* pResource, void*& pUpdateArg) { |
225 |
|
|
dmsg(3,("EngineChannelBase: Received instrument update message.\n")); |
226 |
|
|
if (pEngine) pEngine->DisableAndLock(); |
227 |
|
|
ResetInternal(); |
228 |
|
|
this->pInstrument = NULL; |
229 |
|
|
} |
230 |
|
|
|
231 |
|
|
/** |
232 |
|
|
* Will be called by the InstrumentResourceManager when the instrument |
233 |
|
|
* update process was completed, so we can continue with playback. |
234 |
|
|
*/ |
235 |
|
|
virtual void ResourceUpdated(I* pOldResource, I* pNewResource, void* pUpdateArg) { |
236 |
|
|
this->pInstrument = pNewResource; //TODO: there are couple of engine parameters we should update here as well if the instrument was updated (see LoadInstrument()) |
237 |
|
|
if (pEngine) pEngine->Enable(); |
238 |
|
|
bStatusChanged = true; // status of engine has changed, so set notify flag |
239 |
|
|
} |
240 |
|
|
|
241 |
|
|
/** |
242 |
|
|
* Will be called by the InstrumentResourceManager on progress changes |
243 |
|
|
* while loading or realoading an instrument for this EngineChannel. |
244 |
|
|
* |
245 |
|
|
* @param fProgress - current progress as value between 0.0 and 1.0 |
246 |
|
|
*/ |
247 |
|
|
virtual void OnResourceProgress(float fProgress) { |
248 |
|
|
this->InstrumentStat = int(fProgress * 100.0f); |
249 |
|
|
dmsg(7,("EngineChannelBase: progress %d%", InstrumentStat)); |
250 |
|
|
bStatusChanged = true; // status of engine has changed, so set notify flag |
251 |
|
|
} |
252 |
|
|
|
253 |
|
|
void RenderActiveVoices(uint Samples) { |
254 |
|
|
RenderVoicesHandler handler(this, Samples); |
255 |
|
|
ProcessActiveVoices(&handler); |
256 |
|
|
|
257 |
|
|
SetVoiceCount(handler.VoiceCount); |
258 |
|
|
SetDiskStreamCount(handler.StreamCount); |
259 |
|
|
} |
260 |
|
|
|
261 |
|
|
RTList<R*>* pRegionsInUse; ///< temporary pointer into the instrument change command, used by the audio thread |
262 |
|
|
I* pInstrument; |
263 |
|
|
|
264 |
|
|
template<class TV, class TRR, class TR, class TD, class TIM, class TI> friend class EngineBase; |
265 |
|
|
|
266 |
|
|
protected: |
267 |
|
|
EngineChannelBase() : InstrumentChangeCommandReader(InstrumentChangeCommand) { |
268 |
|
|
pInstrument = NULL; |
269 |
|
|
|
270 |
|
|
// reset the instrument change command struct (need to be done |
271 |
|
|
// twice, as it is double buffered) |
272 |
|
|
{ |
273 |
|
|
InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate(); |
274 |
|
|
cmd.pRegionsInUse = NULL; |
275 |
|
|
cmd.pInstrument = NULL; |
276 |
|
|
cmd.bChangeInstrument = false; |
277 |
|
|
} |
278 |
|
|
{ |
279 |
|
|
InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.SwitchConfig(); |
280 |
|
|
cmd.pRegionsInUse = NULL; |
281 |
|
|
cmd.pInstrument = NULL; |
282 |
|
|
cmd.bChangeInstrument = false; |
283 |
|
|
} |
284 |
|
|
} |
285 |
|
|
|
286 |
|
|
virtual ~EngineChannelBase() { } |
287 |
|
|
|
288 |
|
|
typedef typename RTList<V>::Iterator RTListVoiceIterator; |
289 |
|
|
|
290 |
|
|
class RenderVoicesHandler : public MidiKeyboardManager<V>::VoiceHandlerBase { |
291 |
|
|
public: |
292 |
|
|
uint Samples; |
293 |
|
|
uint VoiceCount; |
294 |
|
|
uint StreamCount; |
295 |
|
|
EngineChannelBase<V, R, I>* pChannel; |
296 |
|
|
|
297 |
|
|
RenderVoicesHandler(EngineChannelBase<V, R, I>* channel, uint samples) : |
298 |
|
|
pChannel(channel), Samples(samples), VoiceCount(0), StreamCount(0) { } |
299 |
|
|
|
300 |
|
|
virtual void Process(RTListVoiceIterator& itVoice) { |
301 |
|
|
// now render current voice |
302 |
|
|
itVoice->Render(Samples); |
303 |
|
|
if (itVoice->IsActive()) { // still active |
304 |
|
|
if (!itVoice->Orphan) { |
305 |
|
|
*(pChannel->pRegionsInUse->allocAppend()) = itVoice->GetRegion(); |
306 |
|
|
} |
307 |
|
|
VoiceCount++; |
308 |
|
|
|
309 |
|
|
if (itVoice->PlaybackState == Voice::playback_state_disk) { |
310 |
|
|
if ((itVoice->DiskStreamRef).State != Stream::state_unused) StreamCount++; |
311 |
|
|
} |
312 |
|
|
} else { // voice reached end, is now inactive |
313 |
|
|
pChannel->FreeVoice(itVoice); // remove voice from the list of active voices |
314 |
|
|
} |
315 |
|
|
} |
316 |
|
|
}; |
317 |
|
|
|
318 |
|
|
typedef typename SynchronizedConfig<InstrumentChangeCmd<R, I> >::Reader SyncConfInstrChangeCmdReader; |
319 |
|
|
|
320 |
|
|
SynchronizedConfig<InstrumentChangeCmd<R, I> > InstrumentChangeCommand; |
321 |
|
|
SyncConfInstrChangeCmdReader InstrumentChangeCommandReader; |
322 |
|
|
|
323 |
|
|
/** This method is not thread safe! */ |
324 |
|
|
virtual void ResetInternal() { |
325 |
|
|
AbstractEngineChannel::ResetInternal(); |
326 |
|
|
|
327 |
|
|
MidiKeyboardManager<V>::Reset(); |
328 |
|
|
} |
329 |
|
|
|
330 |
|
|
virtual void ResetControllers() { |
331 |
|
|
AbstractEngineChannel::ResetControllers(); |
332 |
|
|
|
333 |
|
|
MidiKeyboardManager<V>::SustainPedal = false; |
334 |
|
|
MidiKeyboardManager<V>::SostenutoPedal = false; |
335 |
|
|
} |
336 |
|
|
|
337 |
|
|
/** |
338 |
|
|
* Changes the instrument for an engine channel. |
339 |
|
|
* |
340 |
|
|
* @param pInstrument - new instrument |
341 |
|
|
* @returns the resulting instrument change command after the |
342 |
|
|
* command switch, containing the old instrument and |
343 |
|
|
* the dimregions it is using |
344 |
|
|
*/ |
345 |
|
|
InstrumentChangeCmd<R, I>& ChangeInstrument(I* pInstrument) { |
346 |
|
|
InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate(); |
347 |
|
|
cmd.pInstrument = pInstrument; |
348 |
|
|
cmd.bChangeInstrument = true; |
349 |
|
|
|
350 |
|
|
return InstrumentChangeCommand.SwitchConfig(); |
351 |
|
|
} |
352 |
|
|
|
353 |
|
|
virtual void ProcessKeySwitchChange(int key) = 0; |
354 |
|
|
}; |
355 |
|
|
|
356 |
|
|
} // namespace LinuxSampler |
357 |
|
|
|
358 |
|
|
#endif /* __LS_ENGINECHANNELBASE_H__ */ |