/[svn]/linuxsampler/trunk/src/Sampler.cpp
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revision 837 by persson, Thu Feb 9 20:03:03 2006 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 Christian Schoenebeck                              *   *   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 25  Line 25 
25    
26  #include "Sampler.h"  #include "Sampler.h"
27    
28    #include "common/global_private.h"
29  #include "engines/EngineFactory.h"  #include "engines/EngineFactory.h"
30  #include "engines/EngineChannelFactory.h"  #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 "drivers/midi/MidiInstrumentMapper.h"
35    #include "common/Features.h"
36  #include "network/lscpserver.h"  #include "network/lscpserver.h"
37    
38  namespace LinuxSampler {  namespace LinuxSampler {
# Line 40  namespace LinuxSampler { Line 44  namespace LinuxSampler {
44          pSampler           = pS;          pSampler           = pS;
45          pEngineChannel     = NULL;          pEngineChannel     = NULL;
46          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
         pMidiInputDevice   = NULL;  
47          iMidiPort          = 0;          iMidiPort          = 0;
48          midiChannel        = midi_chan_all;          midiChannel        = midi_chan_all;
49          iIndex             = -1;          iIndex             = -1;
# Line 48  namespace LinuxSampler { Line 51  namespace LinuxSampler {
51    
52      SamplerChannel::~SamplerChannel() {      SamplerChannel::~SamplerChannel() {
53          if (pEngineChannel) {          if (pEngineChannel) {
54              MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : __GetMidiInputDevicePort(GetMidiInputChannel());              Engine* engine = pEngineChannel->GetEngine();
55              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
56    
57              if (pEngineChannel) {              if (pEngineChannel) {
58                    pEngineChannel->DisconnectAllMidiInputPorts();
59                    
60                  if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();                  if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
61                  EngineChannelFactory::Destroy(pEngineChannel);                  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::SetEngineType(String EngineType) throw (LinuxSamplerException) {      void SamplerChannel::SetEngineType(String EngineType) throw (Exception) {
71          dmsg(2,("SamplerChannel: Assigning engine type..."));          dmsg(2,("SamplerChannel: Assigning engine type..."));
72    
73            if (pEngineChannel) {
74                if (!strcasecmp(pEngineChannel->EngineName().c_str(), EngineType.c_str())) {
75                    dmsg(2,("OK\n"));
76                    return;
77                }
78            }
79    
80            fireEngineToBeChanged();
81    
82          // create new engine channel          // create new engine channel
83          EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);          EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
84          if (!pNewEngineChannel) throw LinuxSamplerException("Unknown engine type");          if (!pNewEngineChannel) throw Exception("Unknown engine type");
85    
86          //FIXME: hack to allow fast retrieval of engine channel's sampler channel index          // remember current MIDI input connections
87          pNewEngineChannel->iSamplerChannelIndex = Index();          std::vector<MidiInputPort*> vMidiInputs = GetMidiInputPorts();
88            midi_chan_t midiChannel = GetMidiInputChannel();
89            
90            try {
91                pNewEngineChannel->SetSamplerChannel(this);
92    
93          // dereference midi input port.              // disconnect old engine channel
94          MidiInputPort* pMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());              if (pEngineChannel) {
95          // disconnect old engine channel                  Engine* engine = pEngineChannel->GetEngine();
96          if (pEngineChannel) {                  if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
97              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);  
98              if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();                  pEngineChannel->DisconnectAllMidiInputPorts();
99              EngineChannelFactory::Destroy(pEngineChannel);                  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              // connect new engine channel
109          if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, GetMidiInputChannel());              if (pAudioOutputDevice) {
110          if (pAudioOutputDevice) {                  pNewEngineChannel->Connect(pAudioOutputDevice);
111              pNewEngineChannel->Connect(pAudioOutputDevice);                  pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
112              pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());              }
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;          pEngineChannel = pNewEngineChannel;
122    
123          // from now on get MIDI device and port from EngineChannel object          // from now on get MIDI input ports from EngineChannel object
124          this->pMidiInputDevice = NULL;          this->vMidiInputs.clear();
125          this->iMidiPort        = 0;          this->iMidiPort        = 0;
126    
127          pEngineChannel->StatusChanged(true);          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 && pEngineChannel) pEngineChannel->DisconnectAudioOutputDevice();          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 (pEngineChannel) {          if (pEngineChannel) {
# Line 104  namespace LinuxSampler { Line 155  namespace LinuxSampler {
155          }          }
156      }      }
157    
158      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {      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::DisconnectAllMidiInputPorts() throw (Exception) {
211            std::vector<MidiInputPort*> vMidiPorts = GetMidiInputPorts();
212            for (int i = 0; i < vMidiPorts.size(); ++i) Disconnect(vMidiPorts[i]);
213        }
214    
215        std::vector<MidiInputPort*> SamplerChannel::GetMidiInputPorts() {
216            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::SetMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
231         SetMidiInput(pDevice, 0, GetMidiInputChannel());         SetMidiInput(pDevice, 0, GetMidiInputChannel());
232      }      }
233    
234      void SamplerChannel::SetMidiInputPort(int MidiPort) {      void SamplerChannel::SetMidiInputPort(int MidiPort) throw (Exception) {
235         SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());         SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());
236      }      }
237    
238      void SamplerChannel::SetMidiInputChannel(midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputChannel(midi_chan_t MidiChannel) {
239         SetMidiInput(GetMidiInputDevice(), GetMidiInputPort(), MidiChannel);          if (!isValidMidiChan(MidiChannel)) throw Exception("Invalid MIDI channel (" + ToString(int(MidiChannel)) + ")");
240            if (pEngineChannel) pEngineChannel->SetMidiChannel(MidiChannel);
241            this->midiChannel = MidiChannel;
242      }      }
243    
244      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) throw (Exception) {
245          if (!pDevice) throw LinuxSamplerException("No MIDI input device assigned.");          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          // get old and new midi input port          // prevent attempts to remove non-autonomous MIDI ports
256          MidiInputPort* pOldMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());          // (host plugins like VST, AU, LV2, DSSI)
257          MidiInputPort* pNewMidiInputPort = pDevice->GetPort(iMidiPort);          for (int i = 0; i < vMidiPorts.size(); ++i) {
258                if (vMidiPorts[i] == pNewPort) continue;
259          // disconnect old device port              if (!vMidiPorts[i]->GetDevice()->isAutonomousDevice())
260          if (pOldMidiInputPort && pEngineChannel) pOldMidiInputPort->Disconnect(pEngineChannel);                  throw Exception("The MIDI input port '" + vMidiPorts[i]->GetDevice()->Driver() + "' cannot be altered on this sampler channel!");
261          // remember new device, port and channel if not engine channel yet created          }
262          if (!pEngineChannel) {  
263              this->pMidiInputDevice = pDevice;          if (pEngineChannel) {
264              this->iMidiPort        = iMidiPort;              // remove all current connections
265              this->midiChannel      = MidiChannel;              pEngineChannel->DisconnectAllMidiInputPorts();
266          }              // create the new connection (alone)
267                pEngineChannel->Connect(pNewPort);
268          // connect new device port          } else { // if there is no engine channel yet, then store connection for future ...
269          if (pNewMidiInputPort && pEngineChannel) pNewMidiInputPort->Connect(pEngineChannel, MidiChannel);              // delete all previously scheduled connections
270          // Ooops.              this->vMidiInputs.clear();
271          if (pNewMidiInputPort == NULL)              // store the new connection (alone)
272              throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");              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() {      EngineChannel* SamplerChannel::GetEngineChannel() {
# Line 149  namespace LinuxSampler { Line 288  namespace LinuxSampler {
288      }      }
289    
290      int SamplerChannel::GetMidiInputPort() {      int SamplerChannel::GetMidiInputPort() {
291          MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : NULL;          MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort(0) : NULL;
292          if (pMidiInputPort) this->iMidiPort = (int) pMidiInputPort->GetPortNumber();          if (pMidiInputPort) this->iMidiPort = (int) pMidiInputPort->GetPortNumber();
293          return iMidiPort;          return iMidiPort;
294      }      }
# Line 160  namespace LinuxSampler { Line 299  namespace LinuxSampler {
299    
300      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
301          if (pEngineChannel)          if (pEngineChannel)
302              pMidiInputDevice = (pEngineChannel->GetMidiInputPort()) ? pEngineChannel->GetMidiInputPort()->GetDevice() : NULL;              return (pEngineChannel->GetMidiInputPort(0)) ? pEngineChannel->GetMidiInputPort(0)->GetDevice() : NULL;
303          return pMidiInputDevice;  
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() {
# Line 175  namespace LinuxSampler { Line 322  namespace LinuxSampler {
322              }              }
323          }          }
324    
325          throw LinuxSamplerException("Internal error: SamplerChannel index not found");          throw Exception("Internal error: SamplerChannel index not found");
326      }      }
327    
328      MidiInputPort* SamplerChannel::__GetMidiInputDevicePort(int iMidiPort) {      Sampler* SamplerChannel::GetSampler() {
329          MidiInputPort* pMidiInputPort = NULL;          return pSampler;
         MidiInputDevice* pMidiInputDevice = GetMidiInputDevice();  
         if (pMidiInputDevice)  
             pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);  
         return pMidiInputPort;  
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            return mAllDevices[c.deviceID]->GetPort(c.portNr);
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() {
# Line 202  namespace LinuxSampler { Line 382  namespace LinuxSampler {
382          return mSamplerChannels.size();          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        void Sampler::fireChannelAdded(SamplerChannel* pChannel) {
400            for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
401                llChannelCountListeners.GetListener(i)->ChannelAdded(pChannel);
402            }
403        }
404    
405        void Sampler::fireChannelToBeRemoved(SamplerChannel* pChannel) {
406            for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
407                llChannelCountListeners.GetListener(i)->ChannelToBeRemoved(pChannel);
408            }
409        }
410    
411        void Sampler::AddAudioDeviceCountListener(AudioDeviceCountListener* l) {
412            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          // if there's no sampler channel yet
574          if (!mSamplerChannels.size()) {          if (!mSamplerChannels.size()) {
575              SamplerChannel* pChannel = new SamplerChannel(this);              SamplerChannel* pChannel = new SamplerChannel(this);
576              mSamplerChannels[0] = pChannel;              mSamplerChannels[0] = pChannel;
577              LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, 1));              fireChannelAdded(pChannel);
578                fireChannelCountChanged(1);
579                pChannel->AddEngineChangeListener(&eventHandler);
580              return pChannel;              return pChannel;
581          }          }
582    
# Line 222  namespace LinuxSampler { Line 591  namespace LinuxSampler {
591                  // we found an unused index, so insert the new channel there                  // we found an unused index, so insert the new channel there
592                  SamplerChannel* pChannel = new SamplerChannel(this);                  SamplerChannel* pChannel = new SamplerChannel(this);
593                  mSamplerChannels[i] = pChannel;                  mSamplerChannels[i] = pChannel;
594                  LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, i));                  fireChannelAdded(pChannel);
595                    fireChannelCountChanged(SamplerChannels());
596                    pChannel->AddEngineChangeListener(&eventHandler);
597                  return pChannel;                  return pChannel;
598              }              }
599              throw LinuxSamplerException("Internal error: could not find unoccupied sampler channel index.");              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          // 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          mSamplerChannels[lastIndex + 1] = pChannel;          mSamplerChannels[lastIndex + 1] = pChannel;
605          LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, lastIndex + 1));          fireChannelAdded(pChannel);
606            fireChannelCountChanged(SamplerChannels());
607            pChannel->AddEngineChangeListener(&eventHandler);
608          return pChannel;          return pChannel;
609      }      }
610    
# Line 247  namespace LinuxSampler { Line 620  namespace LinuxSampler {
620          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
621          for (; iterChan != mSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
622              if (iterChan->second == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
623                    fireChannelToBeRemoved(pSamplerChannel);
624                    mOldVoiceCounts.erase(pSamplerChannel->Index());
625                    mOldStreamCounts.erase(pSamplerChannel->Index());
626                    pSamplerChannel->RemoveAllEngineChangeListeners();
627                  mSamplerChannels.erase(iterChan);                  mSamplerChannels.erase(iterChan);
628                  delete pSamplerChannel;                  delete pSamplerChannel;
629                  LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, mSamplerChannels.size()));                  fireChannelCountChanged(SamplerChannels());
630                  return;                  return;
631              }              }
632          }          }
# Line 261  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                  // remove device from the device list      }
                 mAudioOutputDevices.erase(iter);  
   
                 // destroy and free device from memory  
                 delete pDevice;  
702    
703                  break;      void Sampler::DestroyAllAudioOutputDevices() throw (Exception) {
704              }          /*
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      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
722          MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();          if (pDevice) {
723          for (; iter != mMidiInputDevices.end(); iter++) {              // check if there are still sampler engines connected to this device
724              if (iter->second == pDevice) {              for (SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
725                  // check if there are still sampler engines connected to this device                   iterChan != mSamplerChannels.end(); ++iterChan)
726                  for (uint i = 0; i < SamplerChannels(); i++)              {
727                      if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");                  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                  // disable device              fireMidiDeviceToBeDestroyed(pDevice);
734                  pDevice->StopListen();              MidiInputDeviceFactory::Destroy(pDevice);
735                fireMidiDeviceCountChanged(MidiInputDevices());
736            }
737        }
738    
739                  // remove device from the device list      void Sampler::DestroyAllMidiInputDevices() throw (Exception) {
740                  mMidiInputDevices.erase(iter);          /*
741             * In maps iterator invalidation occurs when the iterator point
742             * to the element that is being erased. So we need to copy the map
743             * by calling GetMidiInputDevices() to prevent that.
744             */
745            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                  // destroy and free device from memory              // skip non-autonomous devices
751                  delete pDevice;              if (!pDevice->isAutonomousDevice()) continue;
752    
753                  break;              DestroyMidiInputDevice(pDevice);
             }  
754          }          }
755      }      }
756    
757      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception) {
758          // create new device          // create new device
759          MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);          MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
760    
761          // add new device to the midi device list          fireMidiDeviceCreated(pDevice);
762          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning          fireMidiDeviceCountChanged(MidiInputDevices());
                 if (!mMidiInputDevices[i]) {  
                         mMidiInputDevices[i] = pDevice;  
                         break;  
                 }  
         }  
   
763          return pDevice;          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() {      int Sampler::GetVoiceCount() {
778          int count = 0;          int count = 0;
779          std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();          std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
# Line 366  namespace LinuxSampler { Line 785  namespace LinuxSampler {
785          return count;          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        void Sampler::SetGlobalMaxVoices(int n) throw (Exception) {
797            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        void Sampler::SetGlobalMaxStreams(int n) throw (Exception) {
810            if (n < 0) throw Exception("Maximum disk streams may not be negative");
811            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() {      void Sampler::Reset() {
823          // delete sampler channels          // delete sampler channels
824          try {          try {
825              while (true) {              RemoveAllSamplerChannels();
                     SamplerChannelMap::iterator iter = mSamplerChannels.begin();  
                     if (iter == mSamplerChannels.end()) break;  
                     RemoveSamplerChannel(iter->second);  
             }  
826          }          }
827          catch(...) {          catch(...) {
828              std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;              std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
# Line 382  namespace LinuxSampler { Line 831  namespace LinuxSampler {
831    
832          // delete midi input devices          // delete midi input devices
833          try {          try {
834              while (true) {              DestroyAllMidiInputDevices();
                     MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();  
                     if (iter == mMidiInputDevices.end()) break;  
                     DestroyMidiInputDevice(iter->second);  
             }  
835          }          }
836          catch(...) {          catch(...) {
837              std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;              std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
# Line 395  namespace LinuxSampler { Line 840  namespace LinuxSampler {
840    
841          // delete audio output devices          // delete audio output devices
842          try {          try {
843              while (true) {              DestroyAllAudioOutputDevices();
                     AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();  
                     if (iter == mAudioOutputDevices.end()) break;  
                     DestroyAudioOutputDevice(iter->second);  
             }  
844          }          }
845          catch(...) {          catch(...) {
846              std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;              std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
847              exit(EXIT_FAILURE);              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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