/[svn]/linuxsampler/trunk/src/Sampler.cpp
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revision 61 by schoenebeck, Mon May 3 19:29:44 2004 UTC revision 1937 by schoenebeck, Sun Jul 12 19:52:20 2009 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 - 2009 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   ***************************************************************************/   ***************************************************************************/
23    
24    #include <sstream>
25    
26  #include "Sampler.h"  #include "Sampler.h"
27    
28  #include "audiodriver/AudioOutputDeviceAlsa.h"  #include "common/global_private.h"
29  #include "audiodriver/AudioOutputDeviceJack.h"  #include "engines/EngineFactory.h"
30  #include "mididriver/MidiInputDeviceAlsa.h"  #include "engines/EngineChannelFactory.h"
31  #include "engines/gig/Engine.h"  #include "plugins/InstrumentEditorFactory.h"
32    #include "drivers/audio/AudioOutputDeviceFactory.h"
33    #include "drivers/midi/MidiInputDeviceFactory.h"
34    #include "drivers/midi/MidiInstrumentMapper.h"
35    #include "common/Features.h"
36    #include "network/lscpserver.h"
37    
38  namespace LinuxSampler {  namespace LinuxSampler {
39    
# Line 34  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            pMidiInputDevice   = NULL;
48            iMidiPort          = 0;
49            midiChannel        = midi_chan_all;
50          iIndex             = -1;          iIndex             = -1;
51      }      }
52    
53      SamplerChannel::~SamplerChannel() {      SamplerChannel::~SamplerChannel() {
54          if (pEngine) {          if (pEngineChannel) {
55              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);              Engine* engine = pEngineChannel->GetEngine();
56              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
57              delete pEngine;  
58                MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : __GetMidiInputDevicePort(GetMidiInputChannel());
59                if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
60                if (pEngineChannel) {
61                    if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
62                    EngineChannelFactory::Destroy(pEngineChannel);
63    
64                    // reconnect engine if it still exists
65                    const std::set<Engine*>& engines = EngineFactory::EngineInstances();
66                    if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
67                }
68          }          }
69      }      }
70    
71      void SamplerChannel::LoadEngine(engine_type_t EngineType) {      void SamplerChannel::SetEngineType(String EngineType) throw (Exception) {
72          dmsg(1,("SamplerChannel: Loading engine\n"));          dmsg(2,("SamplerChannel: Assigning engine type..."));
73    
74          // create new engine          if (pEngineChannel) {
75          Engine* pNewEngine = NULL;              if (!strcasecmp(pEngineChannel->EngineName().c_str(), EngineType.c_str())) {
76          switch (EngineType) {                  dmsg(2,("OK\n"));
77              case engine_type_gig:                  return;
78                  pNewEngine = new gig::Engine;              }
                 break;  
             default:  
                 throw LinuxSamplerException("Unknown engine type");  
79          }          }
80    
81          // disconnect old engine          fireEngineToBeChanged();
82          if (pEngine) {  
83              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);          // create new engine channel
84              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);          EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
85              delete pEngine;          if (!pNewEngineChannel) throw Exception("Unknown engine type");
86    
87            pNewEngineChannel->SetSamplerChannel(this);
88    
89            // dereference midi input port.
90            MidiInputPort* pMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
91            // disconnect old engine channel
92            if (pEngineChannel) {
93                Engine* engine = pEngineChannel->GetEngine();
94                if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
95    
96                if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
97                if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
98                EngineChannelFactory::Destroy(pEngineChannel);
99    
100                // reconnect engine if it still exists
101                const std::set<Engine*>& engines = EngineFactory::EngineInstances();
102                if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
103          }          }
104    
105          // connect new engine          // connect new engine channel
106          pEngine = pNewEngine;          if (pAudioOutputDevice) {
107          if (pMidiInputDevice) pMidiInputDevice->Connect(pNewEngine, (MidiInputDevice::midi_chan_t) Index());              pNewEngineChannel->Connect(pAudioOutputDevice);
108          if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);              pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
109          dmsg(1,("SamplerChannel: Engine loaded.\n"));          }
110            if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, GetMidiInputChannel());
111            pEngineChannel = pNewEngineChannel;
112    
113            // from now on get MIDI device and port from EngineChannel object
114            this->pMidiInputDevice = NULL;
115            this->iMidiPort        = 0;
116    
117            pEngineChannel->StatusChanged(true);
118            fireEngineChanged();
119            dmsg(2,("OK\n"));
120      }      }
121    
122      void SamplerChannel::SetAudioOutputDevice(audio_output_type_t AudioType) {      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
123          // get / create desired audio device          if(pAudioOutputDevice == pDevice) return;
         AudioOutputDevice* pDevice = pSampler->GetAudioOutputDevice(AudioType);  
         if (!pDevice) pDevice = pSampler->CreateAudioOutputDevice(AudioType);  
124    
125          // disconnect old device          // disconnect old device
126          if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);          if (pAudioOutputDevice && pEngineChannel) {
127                if (!pAudioOutputDevice->isAutonomousDevice())
128                    throw Exception("The audio output device '" + pAudioOutputDevice->Driver() + "' cannot be dropped from this sampler channel!");
129    
130                Engine* engine = pEngineChannel->GetEngine();
131                pAudioOutputDevice->Disconnect(engine);
132    
133                pEngineChannel->DisconnectAudioOutputDevice();
134    
135                // reconnect engine if it still exists
136                const std::set<Engine*>& engines = EngineFactory::EngineInstances();
137                if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
138            }
139    
140          // connect new device          // connect new device
141          pAudioOutputDevice = pDevice;          pAudioOutputDevice = pDevice;
142          if (pEngine) pAudioOutputDevice->Connect(pEngine);          if (pEngineChannel) {
143                pEngineChannel->Connect(pAudioOutputDevice);
144                pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
145            }
146      }      }
147    
148      void SamplerChannel::SetMidiInputDevice(midi_input_type_t MidiType, MidiInputDevice::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
149          // get / create desired midi device         SetMidiInput(pDevice, 0, GetMidiInputChannel());
150          MidiInputDevice* pDevice = pSampler->GetMidiInputDevice(MidiType);      }
         if (!pDevice) pDevice = pSampler->CreateMidiInputDevice(MidiType);  
151    
152          // disconnect old device      void SamplerChannel::SetMidiInputPort(int MidiPort) throw (Exception) {
153          if (pMidiInputDevice && pEngine) pMidiInputDevice->Disconnect(pEngine);         SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());
154        }
155    
156          // connect new device      void SamplerChannel::SetMidiInputChannel(midi_chan_t MidiChannel) {
157          pMidiInputDevice = pDevice;         SetMidiInput(GetMidiInputDevice(), GetMidiInputPort(), MidiChannel);
158          if (pEngine) pMidiInputDevice->Connect(pEngine, MidiChannel);      }
159    
160        void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) throw (Exception) {
161            if (!pDevice) throw Exception("No MIDI input device assigned.");
162    
163            // get old and new midi input port
164            MidiInputPort* pOldMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
165            MidiInputPort* pNewMidiInputPort = pDevice->GetPort(iMidiPort);
166    
167            // disconnect old device port
168            if (pOldMidiInputPort && pEngineChannel) {
169                MidiInputDevice* pOldDevice = pOldMidiInputPort->GetDevice();
170                if (pOldMidiInputPort != pNewMidiInputPort &&
171                    pOldDevice && !pOldDevice->isAutonomousDevice()
172                ) throw Exception("The MIDI input port '" + pOldDevice->Driver() + "' cannot be altered on this sampler channel!");
173    
174                pOldMidiInputPort->Disconnect(pEngineChannel);
175            }
176    
177            // remember new device, port and channel if not engine channel yet created
178            if (!pEngineChannel) {
179                this->pMidiInputDevice = pDevice;
180                this->iMidiPort        = iMidiPort;
181                this->midiChannel      = MidiChannel;
182            }
183    
184            // connect new device port
185            if (pNewMidiInputPort && pEngineChannel) pNewMidiInputPort->Connect(pEngineChannel, MidiChannel);
186            // Ooops.
187            if (pNewMidiInputPort == NULL)
188                throw Exception("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
189      }      }
190    
191      Engine* SamplerChannel::GetEngine() {      EngineChannel* SamplerChannel::GetEngineChannel() {
192          return pEngine;          return pEngineChannel;
193      }      }
194    
195      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {      midi_chan_t SamplerChannel::GetMidiInputChannel() {
196          return pMidiInputDevice;          if (pEngineChannel) this->midiChannel = pEngineChannel->MidiChannel();
197            return this->midiChannel;
198        }
199    
200        int SamplerChannel::GetMidiInputPort() {
201            MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : NULL;
202            if (pMidiInputPort) this->iMidiPort = (int) pMidiInputPort->GetPortNumber();
203            return iMidiPort;
204      }      }
205    
206      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
207          return pAudioOutputDevice;          return pAudioOutputDevice;
208      }      }
209    
210        MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
211            if (pEngineChannel)
212                pMidiInputDevice = (pEngineChannel->GetMidiInputPort()) ? pEngineChannel->GetMidiInputPort()->GetDevice() : NULL;
213            return pMidiInputDevice;
214        }
215    
216      uint SamplerChannel::Index() {      uint SamplerChannel::Index() {
217          if (iIndex >= 0) return iIndex;          if (iIndex >= 0) return iIndex;
218    
219          std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();          Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
220          for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {          for (; iter != pSampler->mSamplerChannels.end(); iter++) {
221              if (*iter == this) {              if (iter->second == this) {
222                  iIndex = i;                  iIndex = iter->first;
223                  return i;                  return iIndex;
224              }              }
225          }          }
226    
227          throw LinuxSamplerException("SamplerChannel index not found");          throw Exception("Internal error: SamplerChannel index not found");
228        }
229    
230        Sampler* SamplerChannel::GetSampler() {
231            return pSampler;
232        }
233    
234        void SamplerChannel::AddEngineChangeListener(EngineChangeListener* l) {
235            llEngineChangeListeners.AddListener(l);
236        }
237    
238        void SamplerChannel::RemoveEngineChangeListener(EngineChangeListener* l) {
239           llEngineChangeListeners.RemoveListener(l);
240        }
241    
242        void SamplerChannel::RemoveAllEngineChangeListeners() {
243           llEngineChangeListeners.RemoveAllListeners();
244        }
245    
246        void SamplerChannel::fireEngineToBeChanged() {
247            for (int i = 0; i < llEngineChangeListeners.GetListenerCount(); i++) {
248                llEngineChangeListeners.GetListener(i)->EngineToBeChanged(Index());
249            }
250        }
251    
252        void SamplerChannel::fireEngineChanged() {
253            for (int i = 0; i < llEngineChangeListeners.GetListenerCount(); i++) {
254                llEngineChangeListeners.GetListener(i)->EngineChanged(Index());
255            }
256      }      }
257    
258        MidiInputPort* SamplerChannel::__GetMidiInputDevicePort(int iMidiPort) {
259            MidiInputPort* pMidiInputPort = NULL;
260            MidiInputDevice* pMidiInputDevice = GetMidiInputDevice();
261            if (pMidiInputDevice)
262                pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
263            return pMidiInputPort;
264        }
265    
266    
267    
268      // ******************************************************************      // ******************************************************************
269      // * Sampler      // * Sampler
270    
271      Sampler::Sampler() {      Sampler::Sampler() {
272            eventHandler.SetSampler(this);
273            uiOldTotalVoiceCount = uiOldTotalStreamCount = 0;
274      }      }
275    
276      Sampler::~Sampler() {      Sampler::~Sampler() {
277          // delete sampler channels          Reset();
278          {      }
279              std::vector<SamplerChannel*>::iterator iter = vSamplerChannels.begin();  
280              for (; iter != vSamplerChannels.end(); iter++) delete *iter;      uint Sampler::SamplerChannels() {
281            return mSamplerChannels.size();
282        }
283    
284        void Sampler::AddChannelCountListener(ChannelCountListener* l) {
285            llChannelCountListeners.AddListener(l);
286        }
287    
288        void Sampler::RemoveChannelCountListener(ChannelCountListener* l) {
289           llChannelCountListeners.RemoveListener(l);
290        }
291    
292        void Sampler::fireChannelCountChanged(int NewCount) {
293            for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
294                llChannelCountListeners.GetListener(i)->ChannelCountChanged(NewCount);
295          }          }
296        }
297    
298          // delete midi input devices      void Sampler::fireChannelAdded(SamplerChannel* pChannel) {
299          {          for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
300              MidiInputDeviceMap::iterator iter = MidiInputDevices.begin();              llChannelCountListeners.GetListener(i)->ChannelAdded(pChannel);
             for (; iter != MidiInputDevices.end(); iter++) {  
                 MidiInputDevice* pDevice = iter->second;  
                 pDevice->StopListen();  
                 delete pDevice;  
             }  
301          }          }
302        }
303    
304          // delete audio output devices      void Sampler::fireChannelToBeRemoved(SamplerChannel* pChannel) {
305          {          for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
306              AudioOutputDeviceMap::iterator iter = AudioOutputDevices.begin();              llChannelCountListeners.GetListener(i)->ChannelToBeRemoved(pChannel);
             for (; iter != AudioOutputDevices.end(); iter++) {  
                 AudioOutputDevice* pDevice = iter->second;  
                 pDevice->Stop();  
                 delete pDevice;  
             }  
307          }          }
308      }      }
309    
310      uint Sampler::SamplerChannels() {      void Sampler::AddAudioDeviceCountListener(AudioDeviceCountListener* l) {
311          vSamplerChannels.size();          llAudioDeviceCountListeners.AddListener(l);
312        }
313    
314        void Sampler::RemoveAudioDeviceCountListener(AudioDeviceCountListener* l) {
315            llAudioDeviceCountListeners.RemoveListener(l);
316        }
317    
318        void Sampler::fireAudioDeviceCountChanged(int NewCount) {
319            for (int i = 0; i < llAudioDeviceCountListeners.GetListenerCount(); i++) {
320                llAudioDeviceCountListeners.GetListener(i)->AudioDeviceCountChanged(NewCount);
321            }
322        }
323    
324        void Sampler::AddMidiDeviceCountListener(MidiDeviceCountListener* l) {
325            llMidiDeviceCountListeners.AddListener(l);
326        }
327    
328        void Sampler::RemoveMidiDeviceCountListener(MidiDeviceCountListener* l) {
329            llMidiDeviceCountListeners.RemoveListener(l);
330        }
331    
332        void Sampler::fireMidiDeviceCountChanged(int NewCount) {
333            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
334                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceCountChanged(NewCount);
335            }
336        }
337    
338        void Sampler::fireMidiDeviceToBeDestroyed(MidiInputDevice* pDevice) {
339            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
340                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceToBeDestroyed(pDevice);
341            }
342      }      }
343    
344        void Sampler::fireMidiDeviceCreated(MidiInputDevice* pDevice) {
345            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
346                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceCreated(pDevice);
347            }
348        }
349    
350        void Sampler::AddVoiceCountListener(VoiceCountListener* l) {
351            llVoiceCountListeners.AddListener(l);
352        }
353    
354        void Sampler::RemoveVoiceCountListener(VoiceCountListener* l) {
355            llVoiceCountListeners.RemoveListener(l);
356        }
357    
358        void Sampler::fireVoiceCountChanged(int ChannelId, int NewCount) {
359            std::map<uint, uint>::iterator it = mOldVoiceCounts.find(ChannelId);
360            if (it != mOldVoiceCounts.end()) {
361                uint oldCount = it->second;
362                if (NewCount == oldCount) return;
363            }
364    
365            mOldVoiceCounts[ChannelId] = NewCount;
366    
367            for (int i = 0; i < llVoiceCountListeners.GetListenerCount(); i++) {
368                llVoiceCountListeners.GetListener(i)->VoiceCountChanged(ChannelId, NewCount);
369            }
370        }
371    
372        void Sampler::AddStreamCountListener(StreamCountListener* l) {
373            llStreamCountListeners.AddListener(l);
374        }
375    
376        void Sampler::RemoveStreamCountListener(StreamCountListener* l) {
377            llStreamCountListeners.RemoveListener(l);
378        }
379    
380        void Sampler::fireStreamCountChanged(int ChannelId, int NewCount) {
381            std::map<uint, uint>::iterator it = mOldStreamCounts.find(ChannelId);
382            if (it != mOldStreamCounts.end()) {
383                uint oldCount = it->second;
384                if (NewCount == oldCount) return;
385            }
386    
387            mOldStreamCounts[ChannelId] = NewCount;
388    
389            for (int i = 0; i < llStreamCountListeners.GetListenerCount(); i++) {
390                llStreamCountListeners.GetListener(i)->StreamCountChanged(ChannelId, NewCount);
391            }
392        }
393    
394        void Sampler::AddBufferFillListener(BufferFillListener* l) {
395            llBufferFillListeners.AddListener(l);
396        }
397    
398        void Sampler::RemoveBufferFillListener(BufferFillListener* l) {
399            llBufferFillListeners.RemoveListener(l);
400        }
401    
402        void Sampler::fireBufferFillChanged(int ChannelId, String FillData) {
403            for (int i = 0; i < llBufferFillListeners.GetListenerCount(); i++) {
404                llBufferFillListeners.GetListener(i)->BufferFillChanged(ChannelId, FillData);
405            }
406        }
407    
408        void Sampler::AddTotalStreamCountListener(TotalStreamCountListener* l) {
409            llTotalStreamCountListeners.AddListener(l);
410        }
411    
412        void Sampler::RemoveTotalStreamCountListener(TotalStreamCountListener* l) {
413            llTotalStreamCountListeners.RemoveListener(l);
414        }
415    
416        void Sampler::fireTotalStreamCountChanged(int NewCount) {
417            if (NewCount == uiOldTotalStreamCount) return;
418            uiOldTotalStreamCount = NewCount;
419    
420            for (int i = 0; i < llTotalStreamCountListeners.GetListenerCount(); i++) {
421                llTotalStreamCountListeners.GetListener(i)->TotalStreamCountChanged(NewCount);
422            }
423        }
424    
425        void Sampler::AddTotalVoiceCountListener(TotalVoiceCountListener* l) {
426            llTotalVoiceCountListeners.AddListener(l);
427        }
428    
429        void Sampler::RemoveTotalVoiceCountListener(TotalVoiceCountListener* l) {
430            llTotalVoiceCountListeners.RemoveListener(l);
431        }
432    
433        void Sampler::fireTotalVoiceCountChanged(int NewCount) {
434            if (NewCount == uiOldTotalVoiceCount) return;
435            uiOldTotalVoiceCount = NewCount;
436    
437            for (int i = 0; i < llTotalVoiceCountListeners.GetListenerCount(); i++) {
438                llTotalVoiceCountListeners.GetListener(i)->TotalVoiceCountChanged(NewCount);
439            }
440        }
441    
442        void Sampler::AddFxSendCountListener(FxSendCountListener* l) {
443            llFxSendCountListeners.AddListener(l);
444        }
445    
446        void Sampler::RemoveFxSendCountListener(FxSendCountListener* l) {
447            llFxSendCountListeners.RemoveListener(l);
448        }
449    
450        void Sampler::fireFxSendCountChanged(int ChannelId, int NewCount) {
451            for (int i = 0; i < llFxSendCountListeners.GetListenerCount(); i++) {
452                llFxSendCountListeners.GetListener(i)->FxSendCountChanged(ChannelId, NewCount);
453            }
454        }
455    
456        void Sampler::EventHandler::EngineToBeChanged(int ChannelId) {
457            // nothing to do here
458        }
459    
460        void Sampler::EventHandler::EngineChanged(int ChannelId) {
461            EngineChannel* engineChannel = pSampler->GetSamplerChannel(ChannelId)->GetEngineChannel();
462            if(engineChannel == NULL) return;
463            engineChannel->AddFxSendCountListener(this);
464        }
465    
466        void Sampler::EventHandler::FxSendCountChanged(int ChannelId, int NewCount) {
467            pSampler->fireFxSendCountChanged(ChannelId, NewCount);
468        }
469    
470    
471      SamplerChannel* Sampler::AddSamplerChannel() {      SamplerChannel* Sampler::AddSamplerChannel() {
472            // if there's no sampler channel yet
473            if (!mSamplerChannels.size()) {
474                SamplerChannel* pChannel = new SamplerChannel(this);
475                mSamplerChannels[0] = pChannel;
476                fireChannelAdded(pChannel);
477                fireChannelCountChanged(1);
478                pChannel->AddEngineChangeListener(&eventHandler);
479                return pChannel;
480            }
481    
482            // get the highest used sampler channel index
483            uint lastIndex = (--(mSamplerChannels.end()))->first;
484    
485            // check if we reached the index limit
486            if (lastIndex + 1 < lastIndex) {
487                // search for an unoccupied sampler channel index starting from 0
488                for (uint i = 0; i < lastIndex; i++) {
489                    if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
490                    // we found an unused index, so insert the new channel there
491                    SamplerChannel* pChannel = new SamplerChannel(this);
492                    mSamplerChannels[i] = pChannel;
493                    fireChannelAdded(pChannel);
494                    fireChannelCountChanged(SamplerChannels());
495                    pChannel->AddEngineChangeListener(&eventHandler);
496                    return pChannel;
497                }
498                throw Exception("Internal error: could not find unoccupied sampler channel index.");
499            }
500    
501            // we have not reached the index limit so we just add the channel past the highest index
502          SamplerChannel* pChannel = new SamplerChannel(this);          SamplerChannel* pChannel = new SamplerChannel(this);
503          vSamplerChannels.push_back(pChannel);          mSamplerChannels[lastIndex + 1] = pChannel;
504            fireChannelAdded(pChannel);
505            fireChannelCountChanged(SamplerChannels());
506            pChannel->AddEngineChangeListener(&eventHandler);
507          return pChannel;          return pChannel;
508      }      }
509    
510      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
511          if (uiSamplerChannel >= SamplerChannels()) return NULL;          return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
512          return vSamplerChannels[uiSamplerChannel];      }
513    
514        std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
515            return mSamplerChannels;
516      }      }
517    
518      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
519          std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
520          for (; iterChan != vSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
521              if (*iterChan == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
522                  vSamplerChannels.erase(iterChan);                  fireChannelToBeRemoved(pSamplerChannel);
523                    mOldVoiceCounts.erase(pSamplerChannel->Index());
524                    mOldStreamCounts.erase(pSamplerChannel->Index());
525                    pSamplerChannel->RemoveAllEngineChangeListeners();
526                    mSamplerChannels.erase(iterChan);
527                  delete pSamplerChannel;                  delete pSamplerChannel;
528                    fireChannelCountChanged(SamplerChannels());
529                  return;                  return;
530              }              }
531          }          }
# Line 194  namespace LinuxSampler { Line 537  namespace LinuxSampler {
537          RemoveSamplerChannel(pChannel);          RemoveSamplerChannel(pChannel);
538      }      }
539    
540      AudioOutputDevice* Sampler::CreateAudioOutputDevice(audio_output_type_t AudioType) {      void Sampler::RemoveAllSamplerChannels() {
541          // check if device already created          /*
542          AudioOutputDevice* pDevice = GetAudioOutputDevice(AudioType);           * In maps iterator invalidation occurs when the iterator point
543          if (pDevice) return pDevice;           * to the element that is being erased. So we need to copy the map
544             * by calling GetSamplerChannels() to prevent that.
545             */
546            SamplerChannelMap chns = GetSamplerChannels();
547            SamplerChannelMap::iterator iter = chns.begin();
548            for(; iter != chns.end(); iter++) {
549                RemoveSamplerChannel(iter->second);
550            }
551        }
552    
553        std::vector<String> Sampler::AvailableAudioOutputDrivers() {
554            return AudioOutputDeviceFactory::AvailableDrivers();
555        }
556    
557        std::vector<String> Sampler::AvailableMidiInputDrivers() {
558            return MidiInputDeviceFactory::AvailableDrivers();
559        }
560    
561        std::vector<String> Sampler::AvailableEngineTypes() {
562            return EngineFactory::AvailableEngineTypes();
563        }
564    
565        AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (Exception) {
566          // create new device          // create new device
567          switch (AudioType) {          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
568              case audio_output_type_alsa:  
569                  pDevice = new AudioOutputDeviceAlsa;          fireAudioDeviceCountChanged(AudioOutputDevices());
570                  break;          return pDevice;
571              case audio_output_type_jack:      }
572                  pDevice = new AudioOutputDeviceJack;  
573                  break;      uint Sampler::AudioOutputDevices() {
574              default:          return AudioOutputDeviceFactory::Devices().size();
575                  throw LinuxSamplerException("Unknown audio output device type");      }
576    
577        uint Sampler::MidiInputDevices() {
578            return MidiInputDeviceFactory::Devices().size();
579        }
580    
581        std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
582            return AudioOutputDeviceFactory::Devices();
583        }
584    
585        std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
586            return MidiInputDeviceFactory::Devices();
587        }
588    
589        void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
590            if (pDevice) {
591                // check if there are still sampler engines connected to this device
592                for (SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
593                     iterChan != mSamplerChannels.end(); iterChan++
594                ) if (iterChan->second->GetAudioOutputDevice() == pDevice) throw Exception("Sampler channel " + ToString(iterChan->first) + " is still connected to the audio output device.");
595    
596                //TODO: should we add fireAudioDeviceToBeDestroyed() here ?
597                AudioOutputDeviceFactory::Destroy(pDevice);
598                fireAudioDeviceCountChanged(AudioOutputDevices());
599          }          }
600        }
601    
602          // activate device      void Sampler::DestroyAllAudioOutputDevices() throw (Exception) {
603          pDevice->Play();          /*
604             * In maps iterator invalidation occurs when the iterator point
605             * to the element that is being erased. So we need to copy the map
606             * by calling GetAudioOutputDevices() to prevent that.
607             */
608            std::map<uint, AudioOutputDevice*> devs = GetAudioOutputDevices();
609            std::map<uint, AudioOutputDevice*>::iterator iter = devs.begin();
610            for (; iter != devs.end(); iter++) {
611                AudioOutputDevice* pDevice = iter->second;
612    
613          return pDevice;              // skip non-autonomous devices
614                if (!pDevice->isAutonomousDevice()) continue;
615    
616                DestroyAudioOutputDevice(pDevice);
617            }
618      }      }
619    
620      AudioOutputDevice* Sampler::GetAudioOutputDevice(audio_output_type_t AudioType) {      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
621          AudioOutputDeviceMap::iterator iter = AudioOutputDevices.find(AudioType);          if (pDevice) {
622          return (iter != AudioOutputDevices.end()) ? iter->second : NULL;              // check if there are still sampler engines connected to this device
623                for (SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
624                     iterChan != mSamplerChannels.end(); iterChan++
625                ) if (iterChan->second->GetMidiInputDevice() == pDevice) throw Exception("Sampler channel " + ToString(iterChan->first) + " is still connected to the midi input device.");
626    
627                fireMidiDeviceToBeDestroyed(pDevice);
628                MidiInputDeviceFactory::Destroy(pDevice);
629                fireMidiDeviceCountChanged(MidiInputDevices());
630            }
631      }      }
632    
633      MidiInputDevice* Sampler::CreateMidiInputDevice(midi_input_type_t MidiType) {      void Sampler::DestroyAllMidiInputDevices() throw (Exception) {
634          // check if device already created          /*
635          MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);           * In maps iterator invalidation occurs when the iterator point
636          if (pDevice) return pDevice;           * to the element that is being erased. So we need to copy the map
637             * by calling GetMidiInputDevices() to prevent that.
638             */
639            std::map<uint, MidiInputDevice*> devs = GetMidiInputDevices();
640            std::map<uint, MidiInputDevice*>::iterator iter = devs.begin();
641            for (; iter != devs.end(); iter++) {
642                MidiInputDevice* pDevice = iter->second;
643    
644          // create new device              // skip non-autonomous devices
645          switch (MidiType) {              if (!pDevice->isAutonomousDevice()) continue;
646              case midi_input_type_alsa:  
647                  pDevice = new MidiInputDeviceAlsa;              DestroyMidiInputDevice(pDevice);
                 break;  
             default:  
                 throw LinuxSamplerException("Unknown audio output device type");  
648          }          }
649        }
650    
651          // activate device      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception) {
652          pDevice->Listen();          // create new device
653            MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
654    
655            fireMidiDeviceCreated(pDevice);
656            fireMidiDeviceCountChanged(MidiInputDevices());
657          return pDevice;          return pDevice;
658      }      }
659    
660      MidiInputDevice* Sampler::GetMidiInputDevice(midi_input_type_t MidiType) {      int Sampler::GetDiskStreamCount() {
661          MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);          int count = 0;
662          return (iter != MidiInputDevices.end()) ? iter->second : NULL;          std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
663    
664            for(; it != EngineFactory::EngineInstances().end(); it++) {
665                count += (*it)->DiskStreamCount();
666            }
667    
668            return count;
669        }
670    
671        int Sampler::GetVoiceCount() {
672            int count = 0;
673            std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
674    
675            for(; it != EngineFactory::EngineInstances().end(); it++) {
676                count += (*it)->VoiceCount();
677            }
678    
679            return count;
680        }
681    
682        void Sampler::Reset() {
683            // delete sampler channels
684            try {
685                RemoveAllSamplerChannels();
686            }
687            catch(...) {
688                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
689                exit(EXIT_FAILURE);
690            }
691    
692            // delete midi input devices
693            try {
694                DestroyAllMidiInputDevices();
695            }
696            catch(...) {
697                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
698                exit(EXIT_FAILURE);
699            }
700    
701            // delete audio output devices
702            try {
703                DestroyAllAudioOutputDevices();
704            }
705            catch(...) {
706                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
707                exit(EXIT_FAILURE);
708            }
709    
710            // delete MIDI instrument maps
711            try {
712                MidiInstrumentMapper::RemoveAllMaps();
713            }
714            catch(...) {
715                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI instrument maps, exiting.\n" << std::flush;
716                exit(EXIT_FAILURE);
717            }
718    
719            // unload all instrument editor DLLs
720            InstrumentEditorFactory::ClosePlugins();
721        }
722    
723        bool Sampler::EnableDenormalsAreZeroMode() {
724            Features::detect();
725            return Features::enableDenormalsAreZeroMode();
726        }
727    
728        void Sampler::fireStatistics() {
729            static const LSCPEvent::event_t eventsArr[] = {
730                LSCPEvent::event_voice_count, LSCPEvent::event_stream_count,
731                LSCPEvent::event_buffer_fill, LSCPEvent::event_total_voice_count
732            };
733            static const std::list<LSCPEvent::event_t> events(eventsArr, eventsArr + 4);
734    
735            if (LSCPServer::EventSubscribers(events))
736            {
737                LSCPServer::LockRTNotify();
738                std::map<uint,SamplerChannel*> channels = GetSamplerChannels();
739                std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
740                for (; iter != channels.end(); iter++) {
741                    SamplerChannel* pSamplerChannel = iter->second;
742                    EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
743                    if (!pEngineChannel) continue;
744                    Engine* pEngine = pEngineChannel->GetEngine();
745                    if (!pEngine) continue;
746                    fireVoiceCountChanged(iter->first, pEngineChannel->GetVoiceCount());
747                    fireStreamCountChanged(iter->first, pEngineChannel->GetDiskStreamCount());
748                    fireBufferFillChanged(iter->first, pEngine->DiskStreamBufferFillPercentage());
749                }
750    
751                fireTotalStreamCountChanged(GetDiskStreamCount());
752                fireTotalVoiceCountChanged(GetVoiceCount());
753    
754                LSCPServer::UnlockRTNotify();
755            }
756      }      }
757    
758    #if defined(WIN32)
759        static HINSTANCE dllInstance = NULL;
760    
761        String Sampler::GetInstallDir() {
762            char buf[MAX_PATH + 1];
763            if (GetModuleFileName(dllInstance, buf, MAX_PATH)) {
764                String s(buf);
765                size_t n = s.rfind('\\');
766                if (n != String::npos) {
767                    return s.substr(0, n);
768                }
769            }
770            return "";
771        }
772    #endif
773  } // namespace LinuxSampler  } // namespace LinuxSampler
774    
775    #if defined(WIN32)
776    extern "C" {
777        BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
778        {
779            switch (reason) {
780            case DLL_PROCESS_ATTACH:
781                LinuxSampler::dllInstance = instance;
782                break;
783            }
784            return TRUE;
785        }
786    }
787    #endif
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