/[svn]/linuxsampler/trunk/src/Sampler.cpp
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revision 203 by schoenebeck, Tue Jul 13 22:44:13 2004 UTC revision 2500 by schoenebeck, Fri Jan 10 12:20:05 2014 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6     *   Copyright (C) 2005 - 2014 Christian Schoenebeck                       *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This library is free software; you can redistribute it and/or modify  *
9   *   it under the terms of the GNU General Public License as published by  *   *   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     *   *   the Free Software Foundation; either version 2 of the License, or     *
11   *   (at your option) any later version.                                   *   *   (at your option) any later version.                                   *
12   *                                                                         *   *                                                                         *
13   *   This program is distributed in the hope that it will be useful,       *   *   This library is distributed in the hope that it will be useful,       *
14   *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *   *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
15   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
16   *   GNU General Public License for more details.                          *   *   GNU General Public License for more details.                          *
17   *                                                                         *   *                                                                         *
18   *   You should have received a copy of the GNU General Public License     *   *   You should have received a copy of the GNU General Public License     *
19   *   along with this program; if not, write to the Free Software           *   *   along with this library; if not, write to the Free Software           *
20   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
21   *   MA  02111-1307  USA                                                   *   *   MA  02111-1307  USA                                                   *
22   ***************************************************************************/   ***************************************************************************/
# Line 24  Line 25 
25    
26  #include "Sampler.h"  #include "Sampler.h"
27    
28    #include "common/global_private.h"
29    #include "engines/EngineFactory.h"
30    #include "engines/EngineChannelFactory.h"
31    #include "plugins/InstrumentEditorFactory.h"
32  #include "drivers/audio/AudioOutputDeviceFactory.h"  #include "drivers/audio/AudioOutputDeviceFactory.h"
33  #include "drivers/midi/MidiInputDeviceFactory.h"  #include "drivers/midi/MidiInputDeviceFactory.h"
34  #include "engines/gig/Engine.h"  #include "drivers/midi/MidiInstrumentMapper.h"
35    #include "common/Features.h"
36    #include "network/lscpserver.h"
37    
38  namespace LinuxSampler {  namespace LinuxSampler {
39    
# Line 35  namespace LinuxSampler { Line 42  namespace LinuxSampler {
42    
43      SamplerChannel::SamplerChannel(Sampler* pS) {      SamplerChannel::SamplerChannel(Sampler* pS) {
44          pSampler           = pS;          pSampler           = pS;
45          pEngine            = NULL;          pEngineChannel     = NULL;
         pMidiInputDevice   = NULL;  
46          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
47          midiPort           = 0;          iMidiPort          = 0;
48          midiChannel        = MidiInputDevice::MidiInputPort::midi_chan_all;          midiChannel        = midi_chan_all;
49          iIndex             = -1;          iIndex             = -1;
50      }      }
51    
52      SamplerChannel::~SamplerChannel() {      SamplerChannel::~SamplerChannel() {
53          if (pEngine) {          if (pEngineChannel) {
54              MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);              Engine* engine = pEngineChannel->GetEngine();
55              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
56              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);  
57              delete pEngine;              if (pEngineChannel) {
58                    pEngineChannel->DisconnectAllMidiInputPorts();
59                    
60                    if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
61                    EngineChannelFactory::Destroy(pEngineChannel);
62    
63                    // reconnect engine if it still exists
64                    const std::set<Engine*>& engines = EngineFactory::EngineInstances();
65                    if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
66                }
67          }          }
68      }      }
69    
70      void SamplerChannel::LoadEngine(Engine::type_t EngineType) {      void SamplerChannel::SetEngineType(String EngineType) throw (Exception) {
71          dmsg(2,("SamplerChannel: Loading engine..."));          dmsg(2,("SamplerChannel: Assigning engine type..."));
72    
73          // create new engine          if (pEngineChannel) {
74          Engine* pNewEngine = NULL;              if (!strcasecmp(pEngineChannel->EngineName().c_str(), EngineType.c_str())) {
75          switch (EngineType) {                  dmsg(2,("OK\n"));
76              case Engine::type_gig:                  return;
77                  pNewEngine = new gig::Engine;              }
78                  break;          }
79              default:  
80                  throw LinuxSamplerException("Unknown engine type");          fireEngineToBeChanged();
81          }  
82            // create new engine channel
83          // dereference midi input port.          EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
84          MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);          if (!pNewEngineChannel) throw Exception("Unknown engine type");
85          // disconnect old engine  
86          if (pEngine) {          // remember current MIDI input connections
87              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);          std::vector<MidiInputPort*> vMidiInputs = GetMidiInputPorts();
88              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);          midi_chan_t midiChannel = GetMidiInputChannel();
89              delete pEngine;          
90          }          try {
91                pNewEngineChannel->SetSamplerChannel(this);
92          // connect new engine  
93          pEngine = pNewEngine;              // disconnect old engine channel
94          if (pMidiInputPort) pMidiInputPort->Connect(pNewEngine, this->midiChannel);              if (pEngineChannel) {
95          if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);                  Engine* engine = pEngineChannel->GetEngine();
96                    if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
97    
98                    pEngineChannel->DisconnectAllMidiInputPorts();
99                    if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
100                    EngineChannelFactory::Destroy(pEngineChannel);
101                    pEngineChannel = NULL;
102    
103                    // reconnect engine if it still exists
104                    const std::set<Engine*>& engines = EngineFactory::EngineInstances();
105                    if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
106                }
107    
108                // connect new engine channel
109                if (pAudioOutputDevice) {
110                    pNewEngineChannel->Connect(pAudioOutputDevice);
111                    pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
112                }
113                pNewEngineChannel->SetMidiChannel(midiChannel);
114                for (int i = 0; i < vMidiInputs.size(); ++i) {
115                    pNewEngineChannel->Connect(vMidiInputs[i]);
116                }
117            } catch (...) {
118                EngineChannelFactory::Destroy(pNewEngineChannel);
119                throw; // re-throw the same exception
120            }
121            pEngineChannel = pNewEngineChannel;
122    
123            // from now on get MIDI input ports from EngineChannel object
124            this->vMidiInputs.clear();
125            this->iMidiPort        = 0;
126    
127            pEngineChannel->StatusChanged(true);
128            fireEngineChanged();
129          dmsg(2,("OK\n"));          dmsg(2,("OK\n"));
130      }      }
131    
132      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
133            if(pAudioOutputDevice == pDevice) return;
134    
135          // disconnect old device          // disconnect old device
136          if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);          if (pAudioOutputDevice && pEngineChannel) {
137                if (!pAudioOutputDevice->isAutonomousDevice())
138                    throw Exception("The audio output device '" + pAudioOutputDevice->Driver() + "' cannot be dropped from this sampler channel!");
139    
140                Engine* engine = pEngineChannel->GetEngine();
141                pAudioOutputDevice->Disconnect(engine);
142    
143                pEngineChannel->DisconnectAudioOutputDevice();
144    
145                // reconnect engine if it still exists
146                const std::set<Engine*>& engines = EngineFactory::EngineInstances();
147                if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
148            }
149    
150          // connect new device          // connect new device
151          pAudioOutputDevice = pDevice;          pAudioOutputDevice = pDevice;
152          if (pEngine) pAudioOutputDevice->Connect(pEngine);          if (pEngineChannel) {
153                pEngineChannel->Connect(pAudioOutputDevice);
154                pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
155            }
156        }
157    
158        void SamplerChannel::Connect(MidiInputPort* pPort) throw (Exception) {
159            if (!pPort) throw Exception("No MIDI input port provided");
160    
161            // prevent attempts to connect non-autonomous MIDI ports
162            // (host plugins like VST, AU, LV2, DSSI)
163            if (!pPort->GetDevice()->isAutonomousDevice())
164                throw Exception("The MIDI input port '" + pPort->GetDevice()->Driver() + "' cannot be managed manually!");
165    
166            std::vector<MidiInputPort*> vMidiPorts = GetMidiInputPorts();
167    
168            // ignore if port is already connected
169            for (int i = 0; i < vMidiPorts.size(); ++i) {
170                if (vMidiPorts[i] == pPort) return;
171            }
172    
173            // connect this new port
174            if (pEngineChannel) {
175                pEngineChannel->Connect(pPort);
176            } else { // no engine channel yet, remember it for future connection ...
177                const midi_conn_t c = {
178                    pPort->GetDevice()->MidiInputDeviceID(),
179                    pPort->GetPortNumber()
180                };
181                this->vMidiInputs.push_back(c);
182            }
183        }
184    
185        void SamplerChannel::Disconnect(MidiInputPort* pPort) throw (Exception) {
186            if (!pPort) return;
187    
188            // prevent attempts to alter channels with non-autonomous devices
189            // (host plugins like VST, AU, LV2, DSSI)
190            if (!pPort->GetDevice()->isAutonomousDevice())
191                throw Exception("The MIDI input port '" + pPort->GetDevice()->Driver() + "' cannot be managed manually!");
192    
193            // disconnect this port
194            if (pEngineChannel) {
195                pEngineChannel->Disconnect(pPort);
196            } else { // no engine channel yet, forget it regarding future connection ...
197                const midi_conn_t c = {
198                    pPort->GetDevice()->MidiInputDeviceID(),
199                    pPort->GetPortNumber()
200                };
201                for (int i = this->vMidiInputs.size() - 1; i >= 0; --i) {
202                    if (this->vMidiInputs[i] == c)
203                        this->vMidiInputs.erase(this->vMidiInputs.begin() + i);
204                    // no break or return here, for safety reasons
205                    // (just in case there were really duplicates for some reason)
206                }
207            }
208      }      }
209    
210      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {      void SamplerChannel::DisconnectAllMidiInputPorts() throw (Exception) {
211         SetMidiInput(pDevice, this->midiPort, this->midiChannel);          std::vector<MidiInputPort*> vMidiPorts = GetMidiInputPorts();
212            for (int i = 0; i < vMidiPorts.size(); ++i) Disconnect(vMidiPorts[i]);
213      }      }
214    
215      void SamplerChannel::SetMidiInputPort(int MidiPort) {      std::vector<MidiInputPort*> SamplerChannel::GetMidiInputPorts() {
216         SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);          std::vector<MidiInputPort*> v;
217            if (pEngineChannel) {
218                MidiInputPort* pPort = pEngineChannel->GetMidiInputPort(0);
219                for (int i = 0; pPort; pPort = pEngineChannel->GetMidiInputPort(++i))
220                    v.push_back(pPort);
221            } else {
222                for (int i = 0; i < this->vMidiInputs.size(); ++i) {
223                    MidiInputPort* pPort = _getPortForID(this->vMidiInputs[i]);
224                    if (pPort) v.push_back(pPort);
225                }
226            }
227            return v;
228      }      }
229    
230      void SamplerChannel::SetMidiInputChannel(MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
231         SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);         SetMidiInput(pDevice, 0, GetMidiInputChannel());
232      }      }
233    
234      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int MidiPort, MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputPort(int MidiPort) throw (Exception) {
235          // dereference old midi input port.         SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());
236          MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);      }
237          // disconnect old device port  
238          if (pMidiInputPort && pEngine) pMidiInputPort->Disconnect(pEngine);      void SamplerChannel::SetMidiInputChannel(midi_chan_t MidiChannel) {
239          // new device, port and channel          if (!isValidMidiChan(MidiChannel)) throw Exception("Invalid MIDI channel (" + ToString(int(MidiChannel)) + ")");
240          pMidiInputDevice = pDevice;          if (pEngineChannel) pEngineChannel->SetMidiChannel(MidiChannel);
         this->midiPort = MidiPort;  
241          this->midiChannel = MidiChannel;          this->midiChannel = MidiChannel;
         // connect new device port  
         pMidiInputPort = GetMidiInputDevicePort(this->midiPort);  
         if (pMidiInputPort && pEngine) pMidiInputPort->Connect(pEngine, MidiChannel);  
         // Ooops.  
         if (pMidiInputPort == NULL)  
             throw LinuxSamplerException("There is no MIDI input port with index " + ToString(MidiPort) + ".");  
242      }      }
243    
244      Engine* SamplerChannel::GetEngine() {      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) throw (Exception) {
245          return pEngine;          if (!pDevice) throw Exception("No MIDI input device assigned.");
246    
247            // apply new MIDI channel
248            SetMidiInputChannel(MidiChannel);
249    
250            MidiInputPort* pNewPort = pDevice->GetPort(iMidiPort);
251            if (!pNewPort) throw Exception("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
252    
253            std::vector<MidiInputPort*> vMidiPorts = GetMidiInputPorts();
254    
255            // prevent attempts to remove non-autonomous MIDI ports
256            // (host plugins like VST, AU, LV2, DSSI)
257            for (int i = 0; i < vMidiPorts.size(); ++i) {
258                if (vMidiPorts[i] == pNewPort) continue;
259                if (!vMidiPorts[i]->GetDevice()->isAutonomousDevice())
260                    throw Exception("The MIDI input port '" + vMidiPorts[i]->GetDevice()->Driver() + "' cannot be altered on this sampler channel!");
261            }
262    
263            if (pEngineChannel) {
264                // remove all current connections
265                pEngineChannel->DisconnectAllMidiInputPorts();
266                // create the new connection (alone)
267                pEngineChannel->Connect(pNewPort);
268            } else { // if there is no engine channel yet, then store connection for future ...
269                // delete all previously scheduled connections
270                this->vMidiInputs.clear();
271                // store the new connection (alone)
272                const midi_conn_t c = {
273                    pNewPort->GetDevice()->MidiInputDeviceID(),
274                    pNewPort->GetPortNumber()
275                };
276                this->vMidiInputs.push_back(c);
277                this->iMidiPort = iMidiPort;
278            }
279        }
280    
281        EngineChannel* SamplerChannel::GetEngineChannel() {
282            return pEngineChannel;
283      }      }
284    
285      MidiInputDevice::MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {      midi_chan_t SamplerChannel::GetMidiInputChannel() {
286            if (pEngineChannel) this->midiChannel = pEngineChannel->MidiChannel();
287          return this->midiChannel;          return this->midiChannel;
288      }      }
289    
290      int SamplerChannel::GetMidiInputPort() {      int SamplerChannel::GetMidiInputPort() {
291          MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);          MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort(0) : NULL;
292          return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);          if (pMidiInputPort) this->iMidiPort = (int) pMidiInputPort->GetPortNumber();
293            return iMidiPort;
294      }      }
295    
296      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
# Line 136  namespace LinuxSampler { Line 298  namespace LinuxSampler {
298      }      }
299    
300      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
301          return pMidiInputDevice;          if (pEngineChannel)
302                return (pEngineChannel->GetMidiInputPort(0)) ? pEngineChannel->GetMidiInputPort(0)->GetDevice() : NULL;
303    
304            if (vMidiInputs.empty())
305                return NULL;
306    
307            std::map<uint, MidiInputDevice*> mAllDevices = MidiInputDeviceFactory::Devices();
308            if (!mAllDevices.count(vMidiInputs[0].deviceID))
309                return NULL;
310    
311            return mAllDevices[vMidiInputs[0].deviceID];
312      }      }
313    
314      uint SamplerChannel::Index() {      uint SamplerChannel::Index() {
315          if (iIndex >= 0) return iIndex;          if (iIndex >= 0) return iIndex;
316    
317          std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();          Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
318          for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {          for (; iter != pSampler->mSamplerChannels.end(); iter++) {
319              if (*iter == this) {              if (iter->second == this) {
320                  iIndex = i;                  iIndex = iter->first;
321                  return i;                  return iIndex;
322              }              }
323          }          }
324    
325          throw LinuxSamplerException("SamplerChannel index not found");          throw Exception("Internal error: SamplerChannel index not found");
326        }
327    
328        Sampler* SamplerChannel::GetSampler() {
329            return pSampler;
330        }
331    
332        void SamplerChannel::AddEngineChangeListener(EngineChangeListener* l) {
333            llEngineChangeListeners.AddListener(l);
334        }
335    
336        void SamplerChannel::RemoveEngineChangeListener(EngineChangeListener* l) {
337           llEngineChangeListeners.RemoveListener(l);
338        }
339    
340        void SamplerChannel::RemoveAllEngineChangeListeners() {
341           llEngineChangeListeners.RemoveAllListeners();
342        }
343    
344        void SamplerChannel::fireEngineToBeChanged() {
345            for (int i = 0; i < llEngineChangeListeners.GetListenerCount(); i++) {
346                llEngineChangeListeners.GetListener(i)->EngineToBeChanged(Index());
347            }
348        }
349    
350        void SamplerChannel::fireEngineChanged() {
351            for (int i = 0; i < llEngineChangeListeners.GetListenerCount(); i++) {
352                llEngineChangeListeners.GetListener(i)->EngineChanged(Index());
353            }
354      }      }
355        
356        /**
357         * Takes a numeric MIDI device ID, port ID pair as argument and returns
358         * the actual MIDI input port associated with that unique ID pair.
359         */
360        MidiInputPort* SamplerChannel::_getPortForID(const midi_conn_t& c) {
361            std::map<uint, MidiInputDevice*> mAllDevices = MidiInputDeviceFactory::Devices();
362            if (!mAllDevices.count(c.deviceID))
363                return NULL;
364    
365      MidiInputDevice::MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int MidiPort) {          return mAllDevices[c.deviceID]->GetPort(c.portNr);
         MidiInputDevice::MidiInputPort *pMidiInputPort = NULL;  
         if (pMidiInputDevice)  
             pMidiInputPort = pMidiInputDevice->GetPort(MidiPort);  
         return pMidiInputPort;  
366      }      }
367    
368    
369      // ******************************************************************      // ******************************************************************
370      // * Sampler      // * Sampler
371    
372      Sampler::Sampler() {      Sampler::Sampler() {
373            eventHandler.SetSampler(this);
374            uiOldTotalVoiceCount = uiOldTotalStreamCount = 0;
375      }      }
376    
377      Sampler::~Sampler() {      Sampler::~Sampler() {
378          // delete sampler channels          Reset();
379          {      }
380              std::vector<SamplerChannel*>::iterator iter = vSamplerChannels.begin();  
381              for (; iter != vSamplerChannels.end(); iter++) delete *iter;      uint Sampler::SamplerChannels() {
382            return mSamplerChannels.size();
383        }
384    
385        void Sampler::AddChannelCountListener(ChannelCountListener* l) {
386            llChannelCountListeners.AddListener(l);
387        }
388    
389        void Sampler::RemoveChannelCountListener(ChannelCountListener* l) {
390           llChannelCountListeners.RemoveListener(l);
391        }
392    
393        void Sampler::fireChannelCountChanged(int NewCount) {
394            for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
395                llChannelCountListeners.GetListener(i)->ChannelCountChanged(NewCount);
396          }          }
397        }
398    
399          // delete midi input devices      void Sampler::fireChannelAdded(SamplerChannel* pChannel) {
400          {          for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
401              MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();              llChannelCountListeners.GetListener(i)->ChannelAdded(pChannel);
             for (; iter != mMidiInputDevices.end(); iter++) {  
                 MidiInputDevice* pDevice = iter->second;  
                 pDevice->StopListen();  
                 delete pDevice;  
             }  
402          }          }
403        }
404    
405          // delete audio output devices      void Sampler::fireChannelToBeRemoved(SamplerChannel* pChannel) {
406          {          for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
407              AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();              llChannelCountListeners.GetListener(i)->ChannelToBeRemoved(pChannel);
             for (; iter != mAudioOutputDevices.end(); iter++) {  
                 AudioOutputDevice* pDevice = iter->second;  
                 pDevice->Stop();  
                 delete pDevice;  
             }  
408          }          }
409      }      }
410    
411      uint Sampler::SamplerChannels() {      void Sampler::AddAudioDeviceCountListener(AudioDeviceCountListener* l) {
412          return vSamplerChannels.size();          llAudioDeviceCountListeners.AddListener(l);
413        }
414    
415        void Sampler::RemoveAudioDeviceCountListener(AudioDeviceCountListener* l) {
416            llAudioDeviceCountListeners.RemoveListener(l);
417        }
418    
419        void Sampler::fireAudioDeviceCountChanged(int NewCount) {
420            for (int i = 0; i < llAudioDeviceCountListeners.GetListenerCount(); i++) {
421                llAudioDeviceCountListeners.GetListener(i)->AudioDeviceCountChanged(NewCount);
422            }
423        }
424    
425        void Sampler::AddMidiDeviceCountListener(MidiDeviceCountListener* l) {
426            llMidiDeviceCountListeners.AddListener(l);
427        }
428    
429        void Sampler::RemoveMidiDeviceCountListener(MidiDeviceCountListener* l) {
430            llMidiDeviceCountListeners.RemoveListener(l);
431        }
432    
433        void Sampler::fireMidiDeviceCountChanged(int NewCount) {
434            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
435                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceCountChanged(NewCount);
436            }
437        }
438    
439        void Sampler::fireMidiDeviceToBeDestroyed(MidiInputDevice* pDevice) {
440            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
441                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceToBeDestroyed(pDevice);
442            }
443        }
444    
445        void Sampler::fireMidiDeviceCreated(MidiInputDevice* pDevice) {
446            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
447                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceCreated(pDevice);
448            }
449        }
450    
451        void Sampler::AddVoiceCountListener(VoiceCountListener* l) {
452            llVoiceCountListeners.AddListener(l);
453        }
454    
455        void Sampler::RemoveVoiceCountListener(VoiceCountListener* l) {
456            llVoiceCountListeners.RemoveListener(l);
457        }
458    
459        void Sampler::fireVoiceCountChanged(int ChannelId, int NewCount) {
460            std::map<uint, uint>::iterator it = mOldVoiceCounts.find(ChannelId);
461            if (it != mOldVoiceCounts.end()) {
462                uint oldCount = it->second;
463                if (NewCount == oldCount) return;
464            }
465    
466            mOldVoiceCounts[ChannelId] = NewCount;
467    
468            for (int i = 0; i < llVoiceCountListeners.GetListenerCount(); i++) {
469                llVoiceCountListeners.GetListener(i)->VoiceCountChanged(ChannelId, NewCount);
470            }
471        }
472    
473        void Sampler::AddStreamCountListener(StreamCountListener* l) {
474            llStreamCountListeners.AddListener(l);
475        }
476    
477        void Sampler::RemoveStreamCountListener(StreamCountListener* l) {
478            llStreamCountListeners.RemoveListener(l);
479        }
480    
481        void Sampler::fireStreamCountChanged(int ChannelId, int NewCount) {
482            std::map<uint, uint>::iterator it = mOldStreamCounts.find(ChannelId);
483            if (it != mOldStreamCounts.end()) {
484                uint oldCount = it->second;
485                if (NewCount == oldCount) return;
486            }
487    
488            mOldStreamCounts[ChannelId] = NewCount;
489    
490            for (int i = 0; i < llStreamCountListeners.GetListenerCount(); i++) {
491                llStreamCountListeners.GetListener(i)->StreamCountChanged(ChannelId, NewCount);
492            }
493        }
494    
495        void Sampler::AddBufferFillListener(BufferFillListener* l) {
496            llBufferFillListeners.AddListener(l);
497        }
498    
499        void Sampler::RemoveBufferFillListener(BufferFillListener* l) {
500            llBufferFillListeners.RemoveListener(l);
501        }
502    
503        void Sampler::fireBufferFillChanged(int ChannelId, String FillData) {
504            for (int i = 0; i < llBufferFillListeners.GetListenerCount(); i++) {
505                llBufferFillListeners.GetListener(i)->BufferFillChanged(ChannelId, FillData);
506            }
507        }
508    
509        void Sampler::AddTotalStreamCountListener(TotalStreamCountListener* l) {
510            llTotalStreamCountListeners.AddListener(l);
511        }
512    
513        void Sampler::RemoveTotalStreamCountListener(TotalStreamCountListener* l) {
514            llTotalStreamCountListeners.RemoveListener(l);
515        }
516    
517        void Sampler::fireTotalStreamCountChanged(int NewCount) {
518            if (NewCount == uiOldTotalStreamCount) return;
519            uiOldTotalStreamCount = NewCount;
520    
521            for (int i = 0; i < llTotalStreamCountListeners.GetListenerCount(); i++) {
522                llTotalStreamCountListeners.GetListener(i)->TotalStreamCountChanged(NewCount);
523            }
524        }
525    
526        void Sampler::AddTotalVoiceCountListener(TotalVoiceCountListener* l) {
527            llTotalVoiceCountListeners.AddListener(l);
528        }
529    
530        void Sampler::RemoveTotalVoiceCountListener(TotalVoiceCountListener* l) {
531            llTotalVoiceCountListeners.RemoveListener(l);
532        }
533    
534        void Sampler::fireTotalVoiceCountChanged(int NewCount) {
535            if (NewCount == uiOldTotalVoiceCount) return;
536            uiOldTotalVoiceCount = NewCount;
537    
538            for (int i = 0; i < llTotalVoiceCountListeners.GetListenerCount(); i++) {
539                llTotalVoiceCountListeners.GetListener(i)->TotalVoiceCountChanged(NewCount);
540            }
541        }
542    
543        void Sampler::AddFxSendCountListener(FxSendCountListener* l) {
544            llFxSendCountListeners.AddListener(l);
545        }
546    
547        void Sampler::RemoveFxSendCountListener(FxSendCountListener* l) {
548            llFxSendCountListeners.RemoveListener(l);
549        }
550    
551        void Sampler::fireFxSendCountChanged(int ChannelId, int NewCount) {
552            for (int i = 0; i < llFxSendCountListeners.GetListenerCount(); i++) {
553                llFxSendCountListeners.GetListener(i)->FxSendCountChanged(ChannelId, NewCount);
554            }
555      }      }
556    
557        void Sampler::EventHandler::EngineToBeChanged(int ChannelId) {
558            // nothing to do here
559        }
560    
561        void Sampler::EventHandler::EngineChanged(int ChannelId) {
562            EngineChannel* engineChannel = pSampler->GetSamplerChannel(ChannelId)->GetEngineChannel();
563            if(engineChannel == NULL) return;
564            engineChannel->AddFxSendCountListener(this);
565        }
566    
567        void Sampler::EventHandler::FxSendCountChanged(int ChannelId, int NewCount) {
568            pSampler->fireFxSendCountChanged(ChannelId, NewCount);
569        }
570    
571    
572      SamplerChannel* Sampler::AddSamplerChannel() {      SamplerChannel* Sampler::AddSamplerChannel() {
573            // if there's no sampler channel yet
574            if (!mSamplerChannels.size()) {
575                SamplerChannel* pChannel = new SamplerChannel(this);
576                mSamplerChannels[0] = pChannel;
577                fireChannelAdded(pChannel);
578                fireChannelCountChanged(1);
579                pChannel->AddEngineChangeListener(&eventHandler);
580                return pChannel;
581            }
582    
583            // get the highest used sampler channel index
584            uint lastIndex = (--(mSamplerChannels.end()))->first;
585    
586            // check if we reached the index limit
587            if (lastIndex + 1 < lastIndex) {
588                // search for an unoccupied sampler channel index starting from 0
589                for (uint i = 0; i < lastIndex; i++) {
590                    if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
591                    // we found an unused index, so insert the new channel there
592                    SamplerChannel* pChannel = new SamplerChannel(this);
593                    mSamplerChannels[i] = pChannel;
594                    fireChannelAdded(pChannel);
595                    fireChannelCountChanged(SamplerChannels());
596                    pChannel->AddEngineChangeListener(&eventHandler);
597                    return pChannel;
598                }
599                throw Exception("Internal error: could not find unoccupied sampler channel index.");
600            }
601    
602            // we have not reached the index limit so we just add the channel past the highest index
603          SamplerChannel* pChannel = new SamplerChannel(this);          SamplerChannel* pChannel = new SamplerChannel(this);
604          vSamplerChannels.push_back(pChannel);          mSamplerChannels[lastIndex + 1] = pChannel;
605            fireChannelAdded(pChannel);
606            fireChannelCountChanged(SamplerChannels());
607            pChannel->AddEngineChangeListener(&eventHandler);
608          return pChannel;          return pChannel;
609      }      }
610    
611      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
612          if (uiSamplerChannel >= SamplerChannels()) return NULL;          return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
613          return vSamplerChannels[uiSamplerChannel];      }
614    
615        std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
616            return mSamplerChannels;
617      }      }
618    
619      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
620          std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
621          for (; iterChan != vSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
622              if (*iterChan == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
623                  vSamplerChannels.erase(iterChan);                  fireChannelToBeRemoved(pSamplerChannel);
624                    mOldVoiceCounts.erase(pSamplerChannel->Index());
625                    mOldStreamCounts.erase(pSamplerChannel->Index());
626                    pSamplerChannel->RemoveAllEngineChangeListeners();
627                    mSamplerChannels.erase(iterChan);
628                  delete pSamplerChannel;                  delete pSamplerChannel;
629                    fireChannelCountChanged(SamplerChannels());
630                  return;                  return;
631              }              }
632          }          }
# Line 226  namespace LinuxSampler { Line 638  namespace LinuxSampler {
638          RemoveSamplerChannel(pChannel);          RemoveSamplerChannel(pChannel);
639      }      }
640    
641        void Sampler::RemoveAllSamplerChannels() {
642            /*
643             * In maps iterator invalidation occurs when the iterator point
644             * to the element that is being erased. So we need to copy the map
645             * by calling GetSamplerChannels() to prevent that.
646             */
647            SamplerChannelMap chns = GetSamplerChannels();
648            SamplerChannelMap::iterator iter = chns.begin();
649            for(; iter != chns.end(); iter++) {
650                RemoveSamplerChannel(iter->second);
651            }
652        }
653    
654      std::vector<String> Sampler::AvailableAudioOutputDrivers() {      std::vector<String> Sampler::AvailableAudioOutputDrivers() {
655          return AudioOutputDeviceFactory::AvailableDrivers();          return AudioOutputDeviceFactory::AvailableDrivers();
656      }      }
657    
658      AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {      std::vector<String> Sampler::AvailableMidiInputDrivers() {
659            return MidiInputDeviceFactory::AvailableDrivers();
660        }
661    
662        std::vector<String> Sampler::AvailableEngineTypes() {
663            return EngineFactory::AvailableEngineTypes();
664        }
665    
666        AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (Exception) {
667          // create new device          // create new device
668          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
669    
670          // add new audio device to the audio device list          fireAudioDeviceCountChanged(AudioOutputDevices());
         for (uint i = 0; ; i++) { // seek for a free place starting from the beginning  
             if (!mAudioOutputDevices[i]) {  
                 mAudioOutputDevices[i] = pDevice;  
                 break;  
             }  
         }  
   
671          return pDevice;          return pDevice;
672      }      }
673    
674      uint Sampler::AudioOutputDevices() {      uint Sampler::AudioOutputDevices() {
675          return mAudioOutputDevices.size();          return AudioOutputDeviceFactory::Devices().size();
676      }      }
677    
678      uint Sampler::MidiInputDevices() {      uint Sampler::MidiInputDevices() {
679          return mMidiInputDevices.size();          return MidiInputDeviceFactory::Devices().size();
680      }      }
681    
682      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
683          return mAudioOutputDevices;          return AudioOutputDeviceFactory::Devices();
684      }      }
685    
686      std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {      std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
687          return mMidiInputDevices;          return MidiInputDeviceFactory::Devices();
688      }      }
689    
690      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
691          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();          if (pDevice) {
692          for (; iter != mAudioOutputDevices.end(); iter++) {              // check if there are still sampler engines connected to this device
693              if (iter->second == pDevice) {              for (SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
694                  // check if there are still sampler engines connected to this device                   iterChan != mSamplerChannels.end(); iterChan++
695                  for (uint i = 0; i < SamplerChannels(); i++)              ) if (iterChan->second->GetAudioOutputDevice() == pDevice) throw Exception("Sampler channel " + ToString(iterChan->first) + " is still connected to the audio output device.");
696                      if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the audio output device.");  
697                //TODO: should we add fireAudioDeviceToBeDestroyed() here ?
698                  // disable device              AudioOutputDeviceFactory::Destroy(pDevice);
699                  pDevice->Stop();              fireAudioDeviceCountChanged(AudioOutputDevices());
700            }
701        }
702    
703                  // remove device from the device list      void Sampler::DestroyAllAudioOutputDevices() throw (Exception) {
704                  mAudioOutputDevices.erase(iter);          /*
705             * In maps iterator invalidation occurs when the iterator point
706             * to the element that is being erased. So we need to copy the map
707             * by calling GetAudioOutputDevices() to prevent that.
708             */
709            std::map<uint, AudioOutputDevice*> devs = GetAudioOutputDevices();
710            std::map<uint, AudioOutputDevice*>::iterator iter = devs.begin();
711            for (; iter != devs.end(); iter++) {
712                AudioOutputDevice* pDevice = iter->second;
713    
714                // skip non-autonomous devices
715                if (!pDevice->isAutonomousDevice()) continue;
716    
717                DestroyAudioOutputDevice(pDevice);
718            }
719        }
720    
721                  // destroy and free device from memory      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
722                  delete pDevice;          if (pDevice) {
723                // check if there are still sampler engines connected to this device
724                for (SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
725                     iterChan != mSamplerChannels.end(); ++iterChan)
726                {
727                    std::vector<MidiInputPort*> vPorts = iterChan->second->GetMidiInputPorts();
728                    for (int k = 0; k < vPorts.size(); ++k)
729                        if (vPorts[k]->GetDevice() == pDevice)
730                            throw Exception("Sampler channel " + ToString(iterChan->first) + " is still connected to the midi input device.");
731              }              }
732    
733                fireMidiDeviceToBeDestroyed(pDevice);
734                MidiInputDeviceFactory::Destroy(pDevice);
735                fireMidiDeviceCountChanged(MidiInputDevices());
736          }          }
737      }      }
738    
739      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {      void Sampler::DestroyAllMidiInputDevices() throw (Exception) {
740          MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();          /*
741          for (; iter != mMidiInputDevices.end(); iter++) {           * In maps iterator invalidation occurs when the iterator point
742              if (iter->second == pDevice) {           * to the element that is being erased. So we need to copy the map
743                  // check if there are still sampler engines connected to this device           * by calling GetMidiInputDevices() to prevent that.
744                  for (uint i = 0; i < SamplerChannels(); i++)           */
745                      if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");          std::map<uint, MidiInputDevice*> devs = GetMidiInputDevices();
746            std::map<uint, MidiInputDevice*>::iterator iter = devs.begin();
747            for (; iter != devs.end(); iter++) {
748                MidiInputDevice* pDevice = iter->second;
749    
750                  // disable device              // skip non-autonomous devices
751                  pDevice->StopListen();              if (!pDevice->isAutonomousDevice()) continue;
752    
753                  // remove device from the device list              DestroyMidiInputDevice(pDevice);
754                  mMidiInputDevices.erase(iter);          }
755        }
756    
757        MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception) {
758            // create new device
759            MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
760    
761            fireMidiDeviceCreated(pDevice);
762            fireMidiDeviceCountChanged(MidiInputDevices());
763            return pDevice;
764        }
765    
766        int Sampler::GetDiskStreamCount() {
767            int count = 0;
768            std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
769    
770            for(; it != EngineFactory::EngineInstances().end(); it++) {
771                count += (*it)->DiskStreamCount();
772            }
773    
774            return count;
775        }
776    
777        int Sampler::GetVoiceCount() {
778            int count = 0;
779            std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
780    
781            for(; it != EngineFactory::EngineInstances().end(); it++) {
782                count += (*it)->VoiceCount();
783            }
784    
785            return count;
786        }
787    
788        int Sampler::GetGlobalMaxVoices() {
789            return GLOBAL_MAX_VOICES; // see common/global_private.cpp
790        }
791    
792        int Sampler::GetGlobalMaxStreams() {
793            return GLOBAL_MAX_STREAMS; // see common/global_private.cpp
794        }
795    
796                  // destroy and free device from memory      void Sampler::SetGlobalMaxVoices(int n) throw (Exception) {
797                  delete pDevice;          if (n < 1) throw Exception("Maximum voices may not be less than 1");
798            GLOBAL_MAX_VOICES = n; // see common/global_private.cpp
799            const std::set<Engine*>& engines = EngineFactory::EngineInstances();
800            if (engines.size() > 0) {
801                std::set<Engine*>::iterator iter = engines.begin();
802                std::set<Engine*>::iterator end  = engines.end();
803                for (; iter != end; ++iter) {
804                    (*iter)->SetMaxVoices(n);
805              }              }
806          }          }
807      }      }
808    
809      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {      void Sampler::SetGlobalMaxStreams(int n) throw (Exception) {
810          // create new device          if (n < 0) throw Exception("Maximum disk streams may not be negative");
811          MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters);          GLOBAL_MAX_STREAMS = n; // see common/global_private.cpp
812            const std::set<Engine*>& engines = EngineFactory::EngineInstances();
813            if (engines.size() > 0) {
814                std::set<Engine*>::iterator iter = engines.begin();
815                std::set<Engine*>::iterator end  = engines.end();
816                for (; iter != end; ++iter) {
817                    (*iter)->SetMaxDiskStreams(n);
818                }
819            }
820        }
821    
822        void Sampler::Reset() {
823            // delete sampler channels
824            try {
825                RemoveAllSamplerChannels();
826            }
827            catch(...) {
828                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
829                exit(EXIT_FAILURE);
830            }
831    
832          // add new device to the midi device list          // delete midi input devices
833          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning          try {
834                  if (!mMidiInputDevices[i]) {              DestroyAllMidiInputDevices();
835                          mMidiInputDevices[i] = pDevice;          }
836                          break;          catch(...) {
837                  }              std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
838          }              exit(EXIT_FAILURE);
839            }
840    
841          return pDevice;          // delete audio output devices
842            try {
843                DestroyAllAudioOutputDevices();
844            }
845            catch(...) {
846                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
847                exit(EXIT_FAILURE);
848            }
849    
850            // delete MIDI instrument maps
851            try {
852                MidiInstrumentMapper::RemoveAllMaps();
853            }
854            catch(...) {
855                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI instrument maps, exiting.\n" << std::flush;
856                exit(EXIT_FAILURE);
857            }
858    
859            // unload all instrument editor DLLs
860            InstrumentEditorFactory::ClosePlugins();
861        }
862    
863        bool Sampler::EnableDenormalsAreZeroMode() {
864            Features::detect();
865            return Features::enableDenormalsAreZeroMode();
866      }      }
867    
868        void Sampler::fireStatistics() {
869            static const LSCPEvent::event_t eventsArr[] = {
870                LSCPEvent::event_voice_count, LSCPEvent::event_stream_count,
871                LSCPEvent::event_buffer_fill, LSCPEvent::event_total_voice_count
872            };
873            static const std::list<LSCPEvent::event_t> events(eventsArr, eventsArr + 4);
874    
875            if (LSCPServer::EventSubscribers(events))
876            {
877                LockGuard lock(LSCPServer::RTNotifyMutex);
878                std::map<uint,SamplerChannel*> channels = GetSamplerChannels();
879                std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
880                for (; iter != channels.end(); iter++) {
881                    SamplerChannel* pSamplerChannel = iter->second;
882                    EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
883                    if (!pEngineChannel) continue;
884                    Engine* pEngine = pEngineChannel->GetEngine();
885                    if (!pEngine) continue;
886                    fireVoiceCountChanged(iter->first, pEngineChannel->GetVoiceCount());
887                    fireStreamCountChanged(iter->first, pEngineChannel->GetDiskStreamCount());
888                    fireBufferFillChanged(iter->first, pEngine->DiskStreamBufferFillPercentage());
889                }
890    
891                fireTotalStreamCountChanged(GetDiskStreamCount());
892                fireTotalVoiceCountChanged(GetVoiceCount());
893            }
894        }
895    
896    #if defined(WIN32)
897        static HINSTANCE dllInstance = NULL;
898    
899        String Sampler::GetInstallDir() {
900            char buf[MAX_PATH + 1];
901            if (GetModuleFileName(dllInstance, buf, MAX_PATH)) {
902                String s(buf);
903                size_t n = s.rfind('\\');
904                if (n != String::npos) {
905                    return s.substr(0, n);
906                }
907            }
908            return "";
909        }
910    #endif
911  } // namespace LinuxSampler  } // namespace LinuxSampler
912    
913    #if defined(WIN32)
914    extern "C" {
915        BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
916        {
917            switch (reason) {
918            case DLL_PROCESS_ATTACH:
919                LinuxSampler::dllInstance = instance;
920                break;
921            }
922            return TRUE;
923        }
924    }
925    #endif
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