/[svn]/linuxsampler/trunk/src/Sampler.cpp
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revision 64 by schoenebeck, Thu May 6 20:06:20 2004 UTC revision 1835 by iliev, Mon Feb 16 17:56:50 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 - 2008 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(2,("SamplerChannel: Loading engine..."));          dmsg(2,("SamplerChannel: Assigning engine type..."));
73            
74            if (pEngineChannel) {
75                if (!strcasecmp(pEngineChannel->EngineName().c_str(), EngineType.c_str())) {
76                    dmsg(2,("OK\n"));
77                    return;
78                }
79            }
80    
81          // create new engine          fireEngineToBeChanged();
82          Engine* pNewEngine = NULL;  
83          switch (EngineType) {          // create new engine channel
84              case Engine::type_gig:          EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
85                  pNewEngine = new gig::Engine;          if (!pNewEngineChannel) throw Exception("Unknown engine type");
86                  break;  
87              default:          pNewEngineChannel->SetSamplerChannel(this);
88                  throw LinuxSamplerException("Unknown engine type");  
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          // disconnect old engine          // connect new engine channel
106          if (pEngine) {          if (pAudioOutputDevice) {
107              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);              pNewEngineChannel->Connect(pAudioOutputDevice);
108              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
             delete pEngine;  
109          }          }
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          // connect new engine          pEngineChannel->StatusChanged(true);
118          pEngine = pNewEngine;          fireEngineChanged();
         if (pMidiInputDevice) pMidiInputDevice->Connect(pNewEngine, (MidiInputDevice::midi_chan_t) Index());  
         if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);  
119          dmsg(2,("OK\n"));          dmsg(2,("OK\n"));
120      }      }
121    
122      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice::type_t AudioType) {      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
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                Engine* engine = pEngineChannel->GetEngine();
128                pAudioOutputDevice->Disconnect(engine);
129    
130                pEngineChannel->DisconnectAudioOutputDevice();
131    
132                // reconnect engine if it still exists
133                const std::set<Engine*>& engines = EngineFactory::EngineInstances();
134                if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
135            }
136    
137          // connect new device          // connect new device
138          pAudioOutputDevice = pDevice;          pAudioOutputDevice = pDevice;
139          if (pEngine) pAudioOutputDevice->Connect(pEngine);          if (pEngineChannel) {
140                pEngineChannel->Connect(pAudioOutputDevice);
141                pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
142            }
143      }      }
144    
145      void SamplerChannel::SetMidiInputDevice(MidiInputDevice::type_t MidiType, MidiInputDevice::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
146          // get / create desired midi device         SetMidiInput(pDevice, 0, GetMidiInputChannel());
147          MidiInputDevice* pDevice = pSampler->GetMidiInputDevice(MidiType);      }
         if (!pDevice) pDevice = pSampler->CreateMidiInputDevice(MidiType);  
148    
149          // disconnect old device      void SamplerChannel::SetMidiInputPort(int MidiPort) {
150          if (pMidiInputDevice && pEngine) pMidiInputDevice->Disconnect(pEngine);         SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());
151        }
152    
153          // connect new device      void SamplerChannel::SetMidiInputChannel(midi_chan_t MidiChannel) {
154          pMidiInputDevice = pDevice;         SetMidiInput(GetMidiInputDevice(), GetMidiInputPort(), MidiChannel);
         if (pEngine) pMidiInputDevice->Connect(pEngine, MidiChannel);  
155      }      }
156    
157      Engine* SamplerChannel::GetEngine() {      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) {
158          return pEngine;          if (!pDevice) throw Exception("No MIDI input device assigned.");
159    
160            // get old and new midi input port
161            MidiInputPort* pOldMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
162            MidiInputPort* pNewMidiInputPort = pDevice->GetPort(iMidiPort);
163    
164            // disconnect old device port
165            if (pOldMidiInputPort && pEngineChannel) pOldMidiInputPort->Disconnect(pEngineChannel);
166            // remember new device, port and channel if not engine channel yet created
167            if (!pEngineChannel) {
168                this->pMidiInputDevice = pDevice;
169                this->iMidiPort        = iMidiPort;
170                this->midiChannel      = MidiChannel;
171            }
172    
173            // connect new device port
174            if (pNewMidiInputPort && pEngineChannel) pNewMidiInputPort->Connect(pEngineChannel, MidiChannel);
175            // Ooops.
176            if (pNewMidiInputPort == NULL)
177                throw Exception("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
178      }      }
179    
180      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {      EngineChannel* SamplerChannel::GetEngineChannel() {
181          return pMidiInputDevice;          return pEngineChannel;
182        }
183    
184        midi_chan_t SamplerChannel::GetMidiInputChannel() {
185            if (pEngineChannel) this->midiChannel = pEngineChannel->MidiChannel();
186            return this->midiChannel;
187        }
188    
189        int SamplerChannel::GetMidiInputPort() {
190            MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : NULL;
191            if (pMidiInputPort) this->iMidiPort = (int) pMidiInputPort->GetPortNumber();
192            return iMidiPort;
193      }      }
194    
195      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
196          return pAudioOutputDevice;          return pAudioOutputDevice;
197      }      }
198    
199        MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
200            if (pEngineChannel)
201                pMidiInputDevice = (pEngineChannel->GetMidiInputPort()) ? pEngineChannel->GetMidiInputPort()->GetDevice() : NULL;
202            return pMidiInputDevice;
203        }
204    
205      uint SamplerChannel::Index() {      uint SamplerChannel::Index() {
206          if (iIndex >= 0) return iIndex;          if (iIndex >= 0) return iIndex;
207    
208          std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();          Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
209          for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {          for (; iter != pSampler->mSamplerChannels.end(); iter++) {
210              if (*iter == this) {              if (iter->second == this) {
211                  iIndex = i;                  iIndex = iter->first;
212                  return i;                  return iIndex;
213              }              }
214          }          }
215    
216          throw LinuxSamplerException("SamplerChannel index not found");          throw Exception("Internal error: SamplerChannel index not found");
217      }      }
218    
219        Sampler* SamplerChannel::GetSampler() {
220            return pSampler;
221        }
222    
223        void SamplerChannel::AddEngineChangeListener(EngineChangeListener* l) {
224            llEngineChangeListeners.AddListener(l);
225        }
226    
227        void SamplerChannel::RemoveEngineChangeListener(EngineChangeListener* l) {
228           llEngineChangeListeners.RemoveListener(l);
229        }
230    
231        void SamplerChannel::RemoveAllEngineChangeListeners() {
232           llEngineChangeListeners.RemoveAllListeners();
233        }
234    
235        void SamplerChannel::fireEngineToBeChanged() {
236            for (int i = 0; i < llEngineChangeListeners.GetListenerCount(); i++) {
237                llEngineChangeListeners.GetListener(i)->EngineToBeChanged(Index());
238            }
239        }
240    
241        void SamplerChannel::fireEngineChanged() {
242            for (int i = 0; i < llEngineChangeListeners.GetListenerCount(); i++) {
243                llEngineChangeListeners.GetListener(i)->EngineChanged(Index());
244            }
245        }
246    
247        MidiInputPort* SamplerChannel::__GetMidiInputDevicePort(int iMidiPort) {
248            MidiInputPort* pMidiInputPort = NULL;
249            MidiInputDevice* pMidiInputDevice = GetMidiInputDevice();
250            if (pMidiInputDevice)
251                pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
252            return pMidiInputPort;
253        }
254    
255    
256    
257      // ******************************************************************      // ******************************************************************
258      // * Sampler      // * Sampler
259    
260      Sampler::Sampler() {      Sampler::Sampler() {
261            eventHandler.SetSampler(this);
262            uiOldTotalVoiceCount = uiOldTotalStreamCount = 0;
263      }      }
264    
265      Sampler::~Sampler() {      Sampler::~Sampler() {
266          // delete sampler channels          Reset();
267          {      }
268              std::vector<SamplerChannel*>::iterator iter = vSamplerChannels.begin();  
269              for (; iter != vSamplerChannels.end(); iter++) delete *iter;      uint Sampler::SamplerChannels() {
270            return mSamplerChannels.size();
271        }
272    
273        void Sampler::AddChannelCountListener(ChannelCountListener* l) {
274            llChannelCountListeners.AddListener(l);
275        }
276    
277        void Sampler::RemoveChannelCountListener(ChannelCountListener* l) {
278           llChannelCountListeners.RemoveListener(l);
279        }
280    
281        void Sampler::fireChannelCountChanged(int NewCount) {
282            for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
283                llChannelCountListeners.GetListener(i)->ChannelCountChanged(NewCount);
284          }          }
285        }
286    
287          // delete midi input devices      void Sampler::fireChannelAdded(SamplerChannel* pChannel) {
288          {          for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
289              MidiInputDeviceMap::iterator iter = MidiInputDevices.begin();              llChannelCountListeners.GetListener(i)->ChannelAdded(pChannel);
             for (; iter != MidiInputDevices.end(); iter++) {  
                 MidiInputDevice* pDevice = iter->second;  
                 pDevice->StopListen();  
                 delete pDevice;  
             }  
290          }          }
291        }
292    
293          // delete audio output devices      void Sampler::fireChannelToBeRemoved(SamplerChannel* pChannel) {
294          {          for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
295              AudioOutputDeviceMap::iterator iter = AudioOutputDevices.begin();              llChannelCountListeners.GetListener(i)->ChannelToBeRemoved(pChannel);
             for (; iter != AudioOutputDevices.end(); iter++) {  
                 AudioOutputDevice* pDevice = iter->second;  
                 pDevice->Stop();  
                 delete pDevice;  
             }  
296          }          }
297      }      }
298    
299      uint Sampler::SamplerChannels() {      void Sampler::AddAudioDeviceCountListener(AudioDeviceCountListener* l) {
300          return vSamplerChannels.size();          llAudioDeviceCountListeners.AddListener(l);
301        }
302    
303        void Sampler::RemoveAudioDeviceCountListener(AudioDeviceCountListener* l) {
304            llAudioDeviceCountListeners.RemoveListener(l);
305        }
306    
307        void Sampler::fireAudioDeviceCountChanged(int NewCount) {
308            for (int i = 0; i < llAudioDeviceCountListeners.GetListenerCount(); i++) {
309                llAudioDeviceCountListeners.GetListener(i)->AudioDeviceCountChanged(NewCount);
310            }
311        }
312    
313        void Sampler::AddMidiDeviceCountListener(MidiDeviceCountListener* l) {
314            llMidiDeviceCountListeners.AddListener(l);
315        }
316    
317        void Sampler::RemoveMidiDeviceCountListener(MidiDeviceCountListener* l) {
318            llMidiDeviceCountListeners.RemoveListener(l);
319        }
320    
321        void Sampler::fireMidiDeviceCountChanged(int NewCount) {
322            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
323                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceCountChanged(NewCount);
324            }
325        }
326    
327        void Sampler::fireMidiDeviceToBeDestroyed(MidiInputDevice* pDevice) {
328            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
329                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceToBeDestroyed(pDevice);
330            }
331        }
332    
333        void Sampler::fireMidiDeviceCreated(MidiInputDevice* pDevice) {
334            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
335                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceCreated(pDevice);
336            }
337        }
338    
339        void Sampler::AddVoiceCountListener(VoiceCountListener* l) {
340            llVoiceCountListeners.AddListener(l);
341        }
342    
343        void Sampler::RemoveVoiceCountListener(VoiceCountListener* l) {
344            llVoiceCountListeners.RemoveListener(l);
345        }
346    
347        void Sampler::fireVoiceCountChanged(int ChannelId, int NewCount) {
348            std::map<uint, uint>::iterator it = mOldVoiceCounts.find(ChannelId);
349            if (it != mOldVoiceCounts.end()) {
350                uint oldCount = it->second;
351                if (NewCount == oldCount) return;
352            }
353    
354            mOldVoiceCounts[ChannelId] = NewCount;
355    
356            for (int i = 0; i < llVoiceCountListeners.GetListenerCount(); i++) {
357                llVoiceCountListeners.GetListener(i)->VoiceCountChanged(ChannelId, NewCount);
358            }
359        }
360    
361        void Sampler::AddStreamCountListener(StreamCountListener* l) {
362            llStreamCountListeners.AddListener(l);
363        }
364    
365        void Sampler::RemoveStreamCountListener(StreamCountListener* l) {
366            llStreamCountListeners.RemoveListener(l);
367        }
368    
369        void Sampler::fireStreamCountChanged(int ChannelId, int NewCount) {
370            std::map<uint, uint>::iterator it = mOldStreamCounts.find(ChannelId);
371            if (it != mOldStreamCounts.end()) {
372                uint oldCount = it->second;
373                if (NewCount == oldCount) return;
374            }
375    
376            mOldStreamCounts[ChannelId] = NewCount;
377    
378            for (int i = 0; i < llStreamCountListeners.GetListenerCount(); i++) {
379                llStreamCountListeners.GetListener(i)->StreamCountChanged(ChannelId, NewCount);
380            }
381        }
382    
383        void Sampler::AddBufferFillListener(BufferFillListener* l) {
384            llBufferFillListeners.AddListener(l);
385        }
386    
387        void Sampler::RemoveBufferFillListener(BufferFillListener* l) {
388            llBufferFillListeners.RemoveListener(l);
389        }
390    
391        void Sampler::fireBufferFillChanged(int ChannelId, String FillData) {
392            for (int i = 0; i < llBufferFillListeners.GetListenerCount(); i++) {
393                llBufferFillListeners.GetListener(i)->BufferFillChanged(ChannelId, FillData);
394            }
395        }
396    
397        void Sampler::AddTotalStreamCountListener(TotalStreamCountListener* l) {
398            llTotalStreamCountListeners.AddListener(l);
399        }
400    
401        void Sampler::RemoveTotalStreamCountListener(TotalStreamCountListener* l) {
402            llTotalStreamCountListeners.RemoveListener(l);
403        }
404    
405        void Sampler::fireTotalStreamCountChanged(int NewCount) {
406            if (NewCount == uiOldTotalStreamCount) return;
407            uiOldTotalStreamCount = NewCount;
408    
409            for (int i = 0; i < llTotalStreamCountListeners.GetListenerCount(); i++) {
410                llTotalStreamCountListeners.GetListener(i)->TotalStreamCountChanged(NewCount);
411            }
412        }
413    
414        void Sampler::AddTotalVoiceCountListener(TotalVoiceCountListener* l) {
415            llTotalVoiceCountListeners.AddListener(l);
416        }
417    
418        void Sampler::RemoveTotalVoiceCountListener(TotalVoiceCountListener* l) {
419            llTotalVoiceCountListeners.RemoveListener(l);
420        }
421    
422        void Sampler::fireTotalVoiceCountChanged(int NewCount) {
423            if (NewCount == uiOldTotalVoiceCount) return;
424            uiOldTotalVoiceCount = NewCount;
425    
426            for (int i = 0; i < llTotalVoiceCountListeners.GetListenerCount(); i++) {
427                llTotalVoiceCountListeners.GetListener(i)->TotalVoiceCountChanged(NewCount);
428            }
429      }      }
430    
431        void Sampler::AddFxSendCountListener(FxSendCountListener* l) {
432            llFxSendCountListeners.AddListener(l);
433        }
434    
435        void Sampler::RemoveFxSendCountListener(FxSendCountListener* l) {
436            llFxSendCountListeners.RemoveListener(l);
437        }
438    
439        void Sampler::fireFxSendCountChanged(int ChannelId, int NewCount) {
440            for (int i = 0; i < llFxSendCountListeners.GetListenerCount(); i++) {
441                llFxSendCountListeners.GetListener(i)->FxSendCountChanged(ChannelId, NewCount);
442            }
443        }
444    
445        void Sampler::EventHandler::EngineToBeChanged(int ChannelId) {
446            // nothing to do here
447        }
448    
449        void Sampler::EventHandler::EngineChanged(int ChannelId) {
450            EngineChannel* engineChannel = pSampler->GetSamplerChannel(ChannelId)->GetEngineChannel();
451            if(engineChannel == NULL) return;
452            engineChannel->AddFxSendCountListener(this);
453        }
454    
455        void Sampler::EventHandler::FxSendCountChanged(int ChannelId, int NewCount) {
456            pSampler->fireFxSendCountChanged(ChannelId, NewCount);
457        }
458    
459    
460      SamplerChannel* Sampler::AddSamplerChannel() {      SamplerChannel* Sampler::AddSamplerChannel() {
461            // if there's no sampler channel yet
462            if (!mSamplerChannels.size()) {
463                SamplerChannel* pChannel = new SamplerChannel(this);
464                mSamplerChannels[0] = pChannel;
465                fireChannelAdded(pChannel);
466                fireChannelCountChanged(1);
467                pChannel->AddEngineChangeListener(&eventHandler);
468                return pChannel;
469            }
470    
471            // get the highest used sampler channel index
472            uint lastIndex = (--(mSamplerChannels.end()))->first;
473    
474            // check if we reached the index limit
475            if (lastIndex + 1 < lastIndex) {
476                // search for an unoccupied sampler channel index starting from 0
477                for (uint i = 0; i < lastIndex; i++) {
478                    if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
479                    // we found an unused index, so insert the new channel there
480                    SamplerChannel* pChannel = new SamplerChannel(this);
481                    mSamplerChannels[i] = pChannel;
482                    fireChannelAdded(pChannel);
483                    fireChannelCountChanged(SamplerChannels());
484                    pChannel->AddEngineChangeListener(&eventHandler);
485                    return pChannel;
486                }
487                throw Exception("Internal error: could not find unoccupied sampler channel index.");
488            }
489    
490            // we have not reached the index limit so we just add the channel past the highest index
491          SamplerChannel* pChannel = new SamplerChannel(this);          SamplerChannel* pChannel = new SamplerChannel(this);
492          vSamplerChannels.push_back(pChannel);          mSamplerChannels[lastIndex + 1] = pChannel;
493            fireChannelAdded(pChannel);
494            fireChannelCountChanged(SamplerChannels());
495            pChannel->AddEngineChangeListener(&eventHandler);
496          return pChannel;          return pChannel;
497      }      }
498    
499      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
500          if (uiSamplerChannel >= SamplerChannels()) return NULL;          return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
501          return vSamplerChannels[uiSamplerChannel];      }
502    
503        std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
504            return mSamplerChannels;
505      }      }
506    
507      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
508          std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
509          for (; iterChan != vSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
510              if (*iterChan == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
511                  vSamplerChannels.erase(iterChan);                  fireChannelToBeRemoved(pSamplerChannel);
512                    mOldVoiceCounts.erase(pSamplerChannel->Index());
513                    mOldStreamCounts.erase(pSamplerChannel->Index());
514                    pSamplerChannel->RemoveAllEngineChangeListeners();
515                    mSamplerChannels.erase(iterChan);
516                  delete pSamplerChannel;                  delete pSamplerChannel;
517                    fireChannelCountChanged(SamplerChannels());
518                  return;                  return;
519              }              }
520          }          }
# Line 194  namespace LinuxSampler { Line 526  namespace LinuxSampler {
526          RemoveSamplerChannel(pChannel);          RemoveSamplerChannel(pChannel);
527      }      }
528    
529      AudioOutputDevice* Sampler::CreateAudioOutputDevice(AudioOutputDevice::type_t AudioType) {      void Sampler::RemoveAllSamplerChannels() {
530          // check if device already created          /*
531          AudioOutputDevice* pDevice = GetAudioOutputDevice(AudioType);           * In maps iterator invalidation occurs when the iterator point
532          if (pDevice) return pDevice;           * to the element that is being erased. So we need to copy the map
533             * by calling GetSamplerChannels() to prevent that.
534             */
535            SamplerChannelMap chns = GetSamplerChannels();
536            SamplerChannelMap::iterator iter = chns.begin();
537            for(; iter != chns.end(); iter++) {
538                RemoveSamplerChannel(iter->second);
539            }
540        }
541    
542        std::vector<String> Sampler::AvailableAudioOutputDrivers() {
543            return AudioOutputDeviceFactory::AvailableDrivers();
544        }
545    
546        std::vector<String> Sampler::AvailableMidiInputDrivers() {
547            return MidiInputDeviceFactory::AvailableDrivers();
548        }
549    
550        std::vector<String> Sampler::AvailableEngineTypes() {
551            return EngineFactory::AvailableEngineTypes();
552        }
553    
554        AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (Exception) {
555          // create new device          // create new device
556          switch (AudioType) {          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
557              case AudioOutputDevice::type_alsa:  
558                  pDevice = new AudioOutputDeviceAlsa;          // add new audio device to the audio device list
559                  break;          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
560              case AudioOutputDevice::type_jack:              if (!mAudioOutputDevices[i]) {
561                  pDevice = new AudioOutputDeviceJack;                  mAudioOutputDevices[i] = pDevice;
562                  break;                  break;
563              default:              }
                 throw LinuxSamplerException("Unknown audio output device type");  
564          }          }
565    
566          // activate device          fireAudioDeviceCountChanged(AudioOutputDevices());
567          pDevice->Play();          return pDevice;
568        }
569    
570          // add new audio device to the audio device list      uint Sampler::AudioOutputDevices() {
571          AudioOutputDevices[AudioType] = pDevice;          return mAudioOutputDevices.size();
572        }
573    
574          return pDevice;      uint Sampler::MidiInputDevices() {
575            return mMidiInputDevices.size();
576      }      }
577    
578      AudioOutputDevice* Sampler::GetAudioOutputDevice(AudioOutputDevice::type_t AudioType) {      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
579          AudioOutputDeviceMap::iterator iter = AudioOutputDevices.find(AudioType);          return mAudioOutputDevices;
         return (iter != AudioOutputDevices.end()) ? iter->second : NULL;  
580      }      }
581    
582      MidiInputDevice* Sampler::CreateMidiInputDevice(MidiInputDevice::type_t MidiType) {      std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
583          // check if device already created          return mMidiInputDevices;
584          MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);      }
         if (pDevice) return pDevice;  
585    
586          // create new device      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
587          switch (MidiType) {          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
588              case MidiInputDevice::type_alsa:          for (; iter != mAudioOutputDevices.end(); iter++) {
589                  pDevice = new MidiInputDeviceAlsa;              if (iter->second == pDevice) {
590                    // check if there are still sampler engines connected to this device
591                    for (SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
592                         iterChan != mSamplerChannels.end(); iterChan++)
593                        if (iterChan->second->GetAudioOutputDevice() == pDevice) throw Exception("Sampler channel " + ToString(iterChan->first) + " is still connected to the audio output device.");
594    
595                    // disable device
596                    pDevice->Stop();
597    
598                    // remove device from the device list
599                    mAudioOutputDevices.erase(iter);
600    
601                    // destroy and free device from memory
602                    delete pDevice;
603    
604                    fireAudioDeviceCountChanged(AudioOutputDevices());
605                  break;                  break;
606              default:              }
                 throw LinuxSamplerException("Unknown audio output device type");  
607          }          }
608        }
609    
610        void Sampler::DestroyAllAudioOutputDevices() throw (Exception) {
611            /*
612             * In maps iterator invalidation occurs when the iterator point
613             * to the element that is being erased. So we need to copy the map
614             * by calling GetAudioOutputDevices() to prevent that.
615             */
616            AudioOutputDeviceMap devs = GetAudioOutputDevices();
617            AudioOutputDeviceMap::iterator iter = devs.begin();
618            for(; iter != devs.end(); iter++) {
619                DestroyAudioOutputDevice(iter->second);
620            }
621        }
622    
623          // activate device      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
624          pDevice->Listen();          MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
625            for (; iter != mMidiInputDevices.end(); iter++) {
626                if (iter->second == pDevice) {
627                    // check if there are still sampler engines connected to this device
628                    for (SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
629                         iterChan != mSamplerChannels.end(); iterChan++)
630                        if (iterChan->second->GetMidiInputDevice() == pDevice) throw Exception("Sampler channel " + ToString(iterChan->first) + " is still connected to the midi input device.");
631    
632          // add new MIDI device to the MIDI device list                  fireMidiDeviceToBeDestroyed(pDevice);
         MidiInputDevices[MidiType] = pDevice;  
633    
634                    // disable device
635                    pDevice->StopListen();
636    
637                    // remove device from the device list
638                    mMidiInputDevices.erase(iter);
639    
640                    // destroy and free device from memory
641                    delete pDevice;
642    
643                    fireMidiDeviceCountChanged(MidiInputDevices());
644                    break;
645                }
646            }
647        }
648    
649        void Sampler::DestroyAllMidiInputDevices() throw (Exception) {
650            /*
651             * In maps iterator invalidation occurs when the iterator point
652             * to the element that is being erased. So we need to copy the map
653             * by calling GetMidiInputDevices() to prevent that.
654             */
655            MidiInputDeviceMap devs = GetMidiInputDevices();
656            MidiInputDeviceMap::iterator iter = devs.begin();
657            for(; iter != devs.end(); iter++) {
658                DestroyMidiInputDevice(iter->second);
659            }
660        }
661    
662        MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception) {
663            // create new device
664            MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
665    
666            // add new device to the midi device list
667            for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
668                    if (!mMidiInputDevices[i]) {
669                            mMidiInputDevices[i] = pDevice;
670                            break;
671                    }
672            }
673    
674            fireMidiDeviceCreated(pDevice);
675            fireMidiDeviceCountChanged(MidiInputDevices());
676          return pDevice;          return pDevice;
677      }      }
678    
679      MidiInputDevice* Sampler::GetMidiInputDevice(MidiInputDevice::type_t MidiType) {      int Sampler::GetDiskStreamCount() {
680          MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);          int count = 0;
681          return (iter != MidiInputDevices.end()) ? iter->second : NULL;          std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
682    
683            for(; it != EngineFactory::EngineInstances().end(); it++) {
684                count += (*it)->DiskStreamCount();
685            }
686    
687            return count;
688        }
689    
690        int Sampler::GetVoiceCount() {
691            int count = 0;
692            std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
693    
694            for(; it != EngineFactory::EngineInstances().end(); it++) {
695                count += (*it)->VoiceCount();
696            }
697    
698            return count;
699        }
700    
701        void Sampler::Reset() {
702            // delete sampler channels
703            try {
704                RemoveAllSamplerChannels();
705            }
706            catch(...) {
707                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
708                exit(EXIT_FAILURE);
709            }
710    
711            // delete midi input devices
712            try {
713                DestroyAllMidiInputDevices();
714            }
715            catch(...) {
716                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
717                exit(EXIT_FAILURE);
718            }
719    
720            // delete audio output devices
721            try {
722                DestroyAllAudioOutputDevices();
723            }
724            catch(...) {
725                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
726                exit(EXIT_FAILURE);
727            }
728    
729            // delete MIDI instrument maps
730            try {
731                MidiInstrumentMapper::RemoveAllMaps();
732            }
733            catch(...) {
734                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI instrument maps, exiting.\n" << std::flush;
735                exit(EXIT_FAILURE);
736            }
737    
738            // unload all instrument editor DLLs
739            InstrumentEditorFactory::ClosePlugins();
740        }
741    
742        bool Sampler::EnableDenormalsAreZeroMode() {
743            Features::detect();
744            return Features::enableDenormalsAreZeroMode();
745        }
746    
747        void Sampler::fireStatistics() {
748            static const LSCPEvent::event_t eventsArr[] = {
749                LSCPEvent::event_voice_count, LSCPEvent::event_stream_count,
750                LSCPEvent::event_buffer_fill, LSCPEvent::event_total_voice_count
751            };
752            static const std::list<LSCPEvent::event_t> events(eventsArr, eventsArr + 4);
753    
754            if (LSCPServer::EventSubscribers(events))
755            {
756                LSCPServer::LockRTNotify();
757                std::map<uint,SamplerChannel*> channels = GetSamplerChannels();
758                std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
759                for (; iter != channels.end(); iter++) {
760                    SamplerChannel* pSamplerChannel = iter->second;
761                    EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
762                    if (!pEngineChannel) continue;
763                    Engine* pEngine = pEngineChannel->GetEngine();
764                    if (!pEngine) continue;
765                    fireVoiceCountChanged(iter->first, pEngineChannel->GetVoiceCount());
766                    fireStreamCountChanged(iter->first, pEngineChannel->GetDiskStreamCount());
767                    fireBufferFillChanged(iter->first, pEngine->DiskStreamBufferFillPercentage());
768                }
769                
770                fireTotalStreamCountChanged(GetDiskStreamCount());
771                fireTotalVoiceCountChanged(GetVoiceCount());
772    
773                LSCPServer::UnlockRTNotify();
774            }
775      }      }
776    
777  } // namespace LinuxSampler  } // namespace LinuxSampler
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