/[svn]/linuxsampler/trunk/src/Sampler.cpp
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revision 123 by schoenebeck, Mon Jun 14 19:33:16 2004 UTC revision 1686 by schoenebeck, Thu Feb 14 14:58:50 2008 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   ***************************************************************************/   ***************************************************************************/
# Line 24  Line 25 
25    
26  #include "Sampler.h"  #include "Sampler.h"
27    
28  #include "audiodriver/AudioOutputDeviceFactory.h"  #include "common/global_private.h"
29  #include "mididriver/MidiInputDeviceAlsa.h"  #include "engines/EngineFactory.h"
30  #include "engines/gig/Engine.h"  #include "engines/EngineChannelFactory.h"
31    #include "plugins/InstrumentEditorFactory.h"
32    #include "drivers/audio/AudioOutputDeviceFactory.h"
33    #include "drivers/midi/MidiInputDeviceFactory.h"
34    #include "drivers/midi/MidiInstrumentMapper.h"
35    
36  namespace LinuxSampler {  namespace LinuxSampler {
37    
# Line 35  namespace LinuxSampler { Line 40  namespace LinuxSampler {
40    
41      SamplerChannel::SamplerChannel(Sampler* pS) {      SamplerChannel::SamplerChannel(Sampler* pS) {
42          pSampler           = pS;          pSampler           = pS;
43          pEngine            = NULL;          pEngineChannel     = NULL;
         pMidiInputDevice   = NULL;  
44          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
45            pMidiInputDevice   = NULL;
46            iMidiPort          = 0;
47            midiChannel        = midi_chan_all;
48          iIndex             = -1;          iIndex             = -1;
49      }      }
50    
51      SamplerChannel::~SamplerChannel() {      SamplerChannel::~SamplerChannel() {
52          if (pEngine) {          if (pEngineChannel) {
53              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);              Engine* engine = pEngineChannel->GetEngine();
54              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
55              delete pEngine;  
56                MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : __GetMidiInputDevicePort(GetMidiInputChannel());
57                if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
58                if (pEngineChannel) {
59                    if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
60                    EngineChannelFactory::Destroy(pEngineChannel);
61    
62                    // reconnect engine if it still exists
63                    const std::set<Engine*>& engines = EngineFactory::EngineInstances();
64                    if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
65                }
66          }          }
67      }      }
68    
69      void SamplerChannel::LoadEngine(Engine::type_t EngineType) {      void SamplerChannel::SetEngineType(String EngineType) throw (Exception) {
70          dmsg(2,("SamplerChannel: Loading engine..."));          dmsg(2,("SamplerChannel: Assigning engine type..."));
71            
72            if (pEngineChannel) {
73                if (!strcasecmp(pEngineChannel->EngineName().c_str(), EngineType.c_str())) {
74                    dmsg(2,("OK\n"));
75                    return;
76                }
77            }
78    
79            fireEngineToBeChanged();
80    
81          // create new engine          // create new engine channel
82          Engine* pNewEngine = NULL;          EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
83          switch (EngineType) {          if (!pNewEngineChannel) throw Exception("Unknown engine type");
84              case Engine::type_gig:  
85                  pNewEngine = new gig::Engine;          //FIXME: hack to allow fast retrieval of engine channel's sampler channel index
86                  break;          pNewEngineChannel->iSamplerChannelIndex = Index();
87              default:  
88                  throw LinuxSamplerException("Unknown engine type");          // dereference midi input port.
89            MidiInputPort* pMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
90            // disconnect old engine channel
91            if (pEngineChannel) {
92                Engine* engine = pEngineChannel->GetEngine();
93                if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
94    
95                if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
96                if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
97                EngineChannelFactory::Destroy(pEngineChannel);
98    
99                // reconnect engine if it still exists
100                const std::set<Engine*>& engines = EngineFactory::EngineInstances();
101                if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
102          }          }
103    
104          // disconnect old engine          // connect new engine channel
105          if (pEngine) {          if (pAudioOutputDevice) {
106              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);              pNewEngineChannel->Connect(pAudioOutputDevice);
107              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
             delete pEngine;  
108          }          }
109            if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, GetMidiInputChannel());
110            pEngineChannel = pNewEngineChannel;
111    
112          // connect new engine          // from now on get MIDI device and port from EngineChannel object
113          pEngine = pNewEngine;          this->pMidiInputDevice = NULL;
114          if (pMidiInputDevice) pMidiInputDevice->Connect(pNewEngine, (MidiInputDevice::midi_chan_t) Index());          this->iMidiPort        = 0;
115          if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);  
116            pEngineChannel->StatusChanged(true);
117            fireEngineChanged();
118          dmsg(2,("OK\n"));          dmsg(2,("OK\n"));
119      }      }
120    
121      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
122            if(pAudioOutputDevice == pDevice) return;
123    
124          // disconnect old device          // disconnect old device
125          if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);          if (pAudioOutputDevice && pEngineChannel) {
126                Engine* engine = pEngineChannel->GetEngine();
127                pAudioOutputDevice->Disconnect(engine);
128    
129                pEngineChannel->DisconnectAudioOutputDevice();
130    
131                // reconnect engine if it still exists
132                const std::set<Engine*>& engines = EngineFactory::EngineInstances();
133                if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
134            }
135    
136          // connect new device          // connect new device
137          pAudioOutputDevice = pDevice;          pAudioOutputDevice = pDevice;
138          if (pEngine) pAudioOutputDevice->Connect(pEngine);          if (pEngineChannel) {
139                pEngineChannel->Connect(pAudioOutputDevice);
140                pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
141            }
142      }      }
143    
144      void SamplerChannel::SetMidiInputDevice(MidiInputDevice::type_t MidiType, MidiInputDevice::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
145          // get / create desired midi device         SetMidiInput(pDevice, 0, GetMidiInputChannel());
146          MidiInputDevice* pDevice = pSampler->GetMidiInputDevice(MidiType);      }
         if (!pDevice) pDevice = pSampler->CreateMidiInputDevice(MidiType);  
147    
148          // disconnect old device      void SamplerChannel::SetMidiInputPort(int MidiPort) {
149          if (pMidiInputDevice && pEngine) pMidiInputDevice->Disconnect(pEngine);         SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());
150        }
151    
152          // connect new device      void SamplerChannel::SetMidiInputChannel(midi_chan_t MidiChannel) {
153          pMidiInputDevice = pDevice;         SetMidiInput(GetMidiInputDevice(), GetMidiInputPort(), MidiChannel);
154          if (pEngine) pMidiInputDevice->Connect(pEngine, MidiChannel);      }
155    
156        void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) {
157            if (!pDevice) throw Exception("No MIDI input device assigned.");
158    
159            // get old and new midi input port
160            MidiInputPort* pOldMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
161            MidiInputPort* pNewMidiInputPort = pDevice->GetPort(iMidiPort);
162    
163            // disconnect old device port
164            if (pOldMidiInputPort && pEngineChannel) pOldMidiInputPort->Disconnect(pEngineChannel);
165            // remember new device, port and channel if not engine channel yet created
166            if (!pEngineChannel) {
167                this->pMidiInputDevice = pDevice;
168                this->iMidiPort        = iMidiPort;
169                this->midiChannel      = MidiChannel;
170            }
171    
172            // connect new device port
173            if (pNewMidiInputPort && pEngineChannel) pNewMidiInputPort->Connect(pEngineChannel, MidiChannel);
174            // Ooops.
175            if (pNewMidiInputPort == NULL)
176                throw Exception("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
177      }      }
178    
179      Engine* SamplerChannel::GetEngine() {      EngineChannel* SamplerChannel::GetEngineChannel() {
180          return pEngine;          return pEngineChannel;
181      }      }
182    
183      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {      midi_chan_t SamplerChannel::GetMidiInputChannel() {
184          return pMidiInputDevice;          if (pEngineChannel) this->midiChannel = pEngineChannel->MidiChannel();
185            return this->midiChannel;
186        }
187    
188        int SamplerChannel::GetMidiInputPort() {
189            MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : NULL;
190            if (pMidiInputPort) this->iMidiPort = (int) pMidiInputPort->GetPortNumber();
191            return iMidiPort;
192      }      }
193    
194      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
195          return pAudioOutputDevice;          return pAudioOutputDevice;
196      }      }
197    
198        MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
199            if (pEngineChannel)
200                pMidiInputDevice = (pEngineChannel->GetMidiInputPort()) ? pEngineChannel->GetMidiInputPort()->GetDevice() : NULL;
201            return pMidiInputDevice;
202        }
203    
204      uint SamplerChannel::Index() {      uint SamplerChannel::Index() {
205          if (iIndex >= 0) return iIndex;          if (iIndex >= 0) return iIndex;
206    
207          std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();          Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
208          for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {          for (; iter != pSampler->mSamplerChannels.end(); iter++) {
209              if (*iter == this) {              if (iter->second == this) {
210                  iIndex = i;                  iIndex = iter->first;
211                  return i;                  return iIndex;
212              }              }
213          }          }
214    
215          throw LinuxSamplerException("SamplerChannel index not found");          throw Exception("Internal error: SamplerChannel index not found");
216        }
217    
218        void SamplerChannel::AddEngineChangeListener(EngineChangeListener* l) {
219            llEngineChangeListeners.AddListener(l);
220        }
221    
222        void SamplerChannel::RemoveEngineChangeListener(EngineChangeListener* l) {
223           llEngineChangeListeners.RemoveListener(l);
224        }
225    
226        void SamplerChannel::RemoveAllEngineChangeListeners() {
227           llEngineChangeListeners.RemoveAllListeners();
228        }
229    
230        void SamplerChannel::fireEngineToBeChanged() {
231            for (int i = 0; i < llEngineChangeListeners.GetListenerCount(); i++) {
232                llEngineChangeListeners.GetListener(i)->EngineToBeChanged(Index());
233            }
234        }
235    
236        void SamplerChannel::fireEngineChanged() {
237            for (int i = 0; i < llEngineChangeListeners.GetListenerCount(); i++) {
238                llEngineChangeListeners.GetListener(i)->EngineChanged(Index());
239            }
240        }
241    
242        MidiInputPort* SamplerChannel::__GetMidiInputDevicePort(int iMidiPort) {
243            MidiInputPort* pMidiInputPort = NULL;
244            MidiInputDevice* pMidiInputDevice = GetMidiInputDevice();
245            if (pMidiInputDevice)
246                pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
247            return pMidiInputPort;
248      }      }
249    
250    
251    
252      // ******************************************************************      // ******************************************************************
253      // * Sampler      // * Sampler
254    
255      Sampler::Sampler() {      Sampler::Sampler() {
256            eventHandler.SetSampler(this);
257      }      }
258    
259      Sampler::~Sampler() {      Sampler::~Sampler() {
260          // delete sampler channels          Reset();
261          {      }
262              std::vector<SamplerChannel*>::iterator iter = vSamplerChannels.begin();  
263              for (; iter != vSamplerChannels.end(); iter++) delete *iter;      uint Sampler::SamplerChannels() {
264            return mSamplerChannels.size();
265        }
266    
267        void Sampler::AddChannelCountListener(ChannelCountListener* l) {
268            llChannelCountListeners.AddListener(l);
269        }
270    
271        void Sampler::RemoveChannelCountListener(ChannelCountListener* l) {
272           llChannelCountListeners.RemoveListener(l);
273        }
274    
275        void Sampler::fireChannelCountChanged(int NewCount) {
276            for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
277                llChannelCountListeners.GetListener(i)->ChannelCountChanged(NewCount);
278          }          }
279        }
280    
281          // delete midi input devices      void Sampler::fireChannelAdded(SamplerChannel* pChannel) {
282          {          for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
283              MidiInputDeviceMap::iterator iter = MidiInputDevices.begin();              llChannelCountListeners.GetListener(i)->ChannelAdded(pChannel);
             for (; iter != MidiInputDevices.end(); iter++) {  
                 MidiInputDevice* pDevice = iter->second;  
                 pDevice->StopListen();  
                 delete pDevice;  
             }  
284          }          }
285        }
286    
287          // delete audio output devices      void Sampler::fireChannelToBeRemoved(SamplerChannel* pChannel) {
288          {          for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
289              AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();              llChannelCountListeners.GetListener(i)->ChannelToBeRemoved(pChannel);
             for (; iter != mAudioOutputDevices.end(); iter++) {  
                 AudioOutputDevice* pDevice = iter->second;  
                 pDevice->Stop();  
                 delete pDevice;  
             }  
290          }          }
291      }      }
292    
293      uint Sampler::SamplerChannels() {      void Sampler::AddAudioDeviceCountListener(AudioDeviceCountListener* l) {
294          return vSamplerChannels.size();          llAudioDeviceCountListeners.AddListener(l);
295        }
296    
297        void Sampler::RemoveAudioDeviceCountListener(AudioDeviceCountListener* l) {
298            llAudioDeviceCountListeners.RemoveListener(l);
299        }
300    
301        void Sampler::fireAudioDeviceCountChanged(int NewCount) {
302            for (int i = 0; i < llAudioDeviceCountListeners.GetListenerCount(); i++) {
303                llAudioDeviceCountListeners.GetListener(i)->AudioDeviceCountChanged(NewCount);
304            }
305        }
306    
307        void Sampler::AddMidiDeviceCountListener(MidiDeviceCountListener* l) {
308            llMidiDeviceCountListeners.AddListener(l);
309        }
310    
311        void Sampler::RemoveMidiDeviceCountListener(MidiDeviceCountListener* l) {
312            llMidiDeviceCountListeners.RemoveListener(l);
313        }
314    
315        void Sampler::fireMidiDeviceCountChanged(int NewCount) {
316            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
317                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceCountChanged(NewCount);
318            }
319        }
320    
321        void Sampler::AddVoiceCountListener(VoiceCountListener* l) {
322            llVoiceCountListeners.AddListener(l);
323        }
324    
325        void Sampler::RemoveVoiceCountListener(VoiceCountListener* l) {
326            llVoiceCountListeners.RemoveListener(l);
327        }
328    
329        void Sampler::fireVoiceCountChanged(int ChannelId, int NewCount) {
330            for (int i = 0; i < llVoiceCountListeners.GetListenerCount(); i++) {
331                llVoiceCountListeners.GetListener(i)->VoiceCountChanged(ChannelId, NewCount);
332            }
333        }
334    
335        void Sampler::AddStreamCountListener(StreamCountListener* l) {
336            llStreamCountListeners.AddListener(l);
337        }
338    
339        void Sampler::RemoveStreamCountListener(StreamCountListener* l) {
340            llStreamCountListeners.RemoveListener(l);
341        }
342    
343        void Sampler::fireStreamCountChanged(int ChannelId, int NewCount) {
344            for (int i = 0; i < llStreamCountListeners.GetListenerCount(); i++) {
345                llStreamCountListeners.GetListener(i)->StreamCountChanged(ChannelId, NewCount);
346            }
347        }
348    
349        void Sampler::AddBufferFillListener(BufferFillListener* l) {
350            llBufferFillListeners.AddListener(l);
351        }
352    
353        void Sampler::RemoveBufferFillListener(BufferFillListener* l) {
354            llBufferFillListeners.RemoveListener(l);
355        }
356    
357        void Sampler::fireBufferFillChanged(int ChannelId, String FillData) {
358            for (int i = 0; i < llBufferFillListeners.GetListenerCount(); i++) {
359                llBufferFillListeners.GetListener(i)->BufferFillChanged(ChannelId, FillData);
360            }
361        }
362    
363        void Sampler::AddTotalStreamCountListener(TotalStreamCountListener* l) {
364            llTotalStreamCountListeners.AddListener(l);
365        }
366    
367        void Sampler::RemoveTotalStreamCountListener(TotalStreamCountListener* l) {
368            llTotalStreamCountListeners.RemoveListener(l);
369        }
370    
371        void Sampler::fireTotalStreamCountChanged(int NewCount) {
372            for (int i = 0; i < llTotalStreamCountListeners.GetListenerCount(); i++) {
373                llTotalStreamCountListeners.GetListener(i)->TotalStreamCountChanged(NewCount);
374            }
375        }
376    
377        void Sampler::AddTotalVoiceCountListener(TotalVoiceCountListener* l) {
378            llTotalVoiceCountListeners.AddListener(l);
379        }
380    
381        void Sampler::RemoveTotalVoiceCountListener(TotalVoiceCountListener* l) {
382            llTotalVoiceCountListeners.RemoveListener(l);
383        }
384    
385        void Sampler::fireTotalVoiceCountChanged(int NewCount) {
386            for (int i = 0; i < llTotalVoiceCountListeners.GetListenerCount(); i++) {
387                llTotalVoiceCountListeners.GetListener(i)->TotalVoiceCountChanged(NewCount);
388            }
389        }
390    
391        void Sampler::AddFxSendCountListener(FxSendCountListener* l) {
392            llFxSendCountListeners.AddListener(l);
393      }      }
394    
395        void Sampler::RemoveFxSendCountListener(FxSendCountListener* l) {
396            llFxSendCountListeners.RemoveListener(l);
397        }
398    
399        void Sampler::fireFxSendCountChanged(int ChannelId, int NewCount) {
400            for (int i = 0; i < llFxSendCountListeners.GetListenerCount(); i++) {
401                llFxSendCountListeners.GetListener(i)->FxSendCountChanged(ChannelId, NewCount);
402            }
403        }
404    
405        void Sampler::EventHandler::EngineToBeChanged(int ChannelId) {
406            // nothing to do here
407        }
408    
409        void Sampler::EventHandler::EngineChanged(int ChannelId) {
410            EngineChannel* engineChannel = pSampler->GetSamplerChannel(ChannelId)->GetEngineChannel();
411            if(engineChannel == NULL) return;
412            engineChannel->AddFxSendCountListener(this);
413        }
414    
415        void Sampler::EventHandler::FxSendCountChanged(int ChannelId, int NewCount) {
416            pSampler->fireFxSendCountChanged(ChannelId, NewCount);
417        }
418    
419    
420      SamplerChannel* Sampler::AddSamplerChannel() {      SamplerChannel* Sampler::AddSamplerChannel() {
421            // if there's no sampler channel yet
422            if (!mSamplerChannels.size()) {
423                SamplerChannel* pChannel = new SamplerChannel(this);
424                mSamplerChannels[0] = pChannel;
425                fireChannelAdded(pChannel);
426                fireChannelCountChanged(1);
427                pChannel->AddEngineChangeListener(&eventHandler);
428                return pChannel;
429            }
430    
431            // get the highest used sampler channel index
432            uint lastIndex = (--(mSamplerChannels.end()))->first;
433    
434            // check if we reached the index limit
435            if (lastIndex + 1 < lastIndex) {
436                // search for an unoccupied sampler channel index starting from 0
437                for (uint i = 0; i < lastIndex; i++) {
438                    if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
439                    // we found an unused index, so insert the new channel there
440                    SamplerChannel* pChannel = new SamplerChannel(this);
441                    mSamplerChannels[i] = pChannel;
442                    fireChannelAdded(pChannel);
443                    fireChannelCountChanged(SamplerChannels());
444                    pChannel->AddEngineChangeListener(&eventHandler);
445                    return pChannel;
446                }
447                throw Exception("Internal error: could not find unoccupied sampler channel index.");
448            }
449    
450            // we have not reached the index limit so we just add the channel past the highest index
451          SamplerChannel* pChannel = new SamplerChannel(this);          SamplerChannel* pChannel = new SamplerChannel(this);
452          vSamplerChannels.push_back(pChannel);          mSamplerChannels[lastIndex + 1] = pChannel;
453            fireChannelAdded(pChannel);
454            fireChannelCountChanged(SamplerChannels());
455            pChannel->AddEngineChangeListener(&eventHandler);
456          return pChannel;          return pChannel;
457      }      }
458    
459      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
460          if (uiSamplerChannel >= SamplerChannels()) return NULL;          return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
461          return vSamplerChannels[uiSamplerChannel];      }
462    
463        std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
464            return mSamplerChannels;
465      }      }
466    
467      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
468          std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
469          for (; iterChan != vSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
470              if (*iterChan == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
471                  vSamplerChannels.erase(iterChan);                  fireChannelToBeRemoved(pSamplerChannel);
472                    pSamplerChannel->RemoveAllEngineChangeListeners();
473                    mSamplerChannels.erase(iterChan);
474                  delete pSamplerChannel;                  delete pSamplerChannel;
475                    fireChannelCountChanged(SamplerChannels());
476                  return;                  return;
477              }              }
478          }          }
# Line 195  namespace LinuxSampler { Line 488  namespace LinuxSampler {
488          return AudioOutputDeviceFactory::AvailableDrivers();          return AudioOutputDeviceFactory::AvailableDrivers();
489      }      }
490    
491      AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {      std::vector<String> Sampler::AvailableMidiInputDrivers() {
492            return MidiInputDeviceFactory::AvailableDrivers();
493        }
494    
495        std::vector<String> Sampler::AvailableEngineTypes() {
496            return EngineFactory::AvailableEngineTypes();
497        }
498    
499        AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (Exception) {
500          // create new device          // create new device
501          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
502    
         // activate device  
         pDevice->Play();  
   
503          // add new audio device to the audio device list          // add new audio device to the audio device list
504          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
505              if (!mAudioOutputDevices[i]) {              if (!mAudioOutputDevices[i]) {
# Line 210  namespace LinuxSampler { Line 508  namespace LinuxSampler {
508              }              }
509          }          }
510    
511            fireAudioDeviceCountChanged(AudioOutputDevices());
512          return pDevice;          return pDevice;
513      }      }
514    
# Line 217  namespace LinuxSampler { Line 516  namespace LinuxSampler {
516          return mAudioOutputDevices.size();          return mAudioOutputDevices.size();
517      }      }
518    
519        uint Sampler::MidiInputDevices() {
520            return mMidiInputDevices.size();
521        }
522    
523      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
524          return mAudioOutputDevices;          return mAudioOutputDevices;
525      }      }
526    
527      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {      std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
528            return mMidiInputDevices;
529        }
530    
531        void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
532          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
533          for (; iter != mAudioOutputDevices.end(); iter++) {          for (; iter != mAudioOutputDevices.end(); iter++) {
534              if (iter->second == pDevice) {              if (iter->second == pDevice) {
535                  // check if there are still sampler engines connected to this device                  // check if there are still sampler engines connected to this device
536                  for (uint i = 0; i < SamplerChannels(); i++)                  for (uint i = 0; i < SamplerChannels(); i++)
537                      if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the audio output device.");                      if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw Exception("Sampler channel " + ToString(i) + " is still connected to the audio output device.");
538    
539                  // disable device                  // disable device
540                  pDevice->Stop();                  pDevice->Stop();
# Line 237  namespace LinuxSampler { Line 544  namespace LinuxSampler {
544    
545                  // destroy and free device from memory                  // destroy and free device from memory
546                  delete pDevice;                  delete pDevice;
547    
548                    fireAudioDeviceCountChanged(AudioOutputDevices());
549                    break;
550              }              }
551          }          }
552      }      }
553    
554      MidiInputDevice* Sampler::CreateMidiInputDevice(MidiInputDevice::type_t MidiType) {      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
555          // check if device already created          MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
556          MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);          for (; iter != mMidiInputDevices.end(); iter++) {
557          if (pDevice) return pDevice;              if (iter->second == pDevice) {
558                    // check if there are still sampler engines connected to this device
559                    for (uint i = 0; i < SamplerChannels(); i++)
560                        if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw Exception("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
561    
562                    // disable device
563                    pDevice->StopListen();
564    
565          // create new device                  // remove device from the device list
566          switch (MidiType) {                  mMidiInputDevices.erase(iter);
567              case MidiInputDevice::type_alsa:  
568                  pDevice = new MidiInputDeviceAlsa;                  // destroy and free device from memory
569                    delete pDevice;
570    
571                    fireMidiDeviceCountChanged(MidiInputDevices());
572                  break;                  break;
573              default:              }
                 throw LinuxSamplerException("Unknown audio output device type");  
574          }          }
575        }
576    
577          // activate device      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception) {
578          pDevice->Listen();          // create new device
579            MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
580    
581          // add new MIDI device to the MIDI device list          // add new device to the midi device list
582          MidiInputDevices[MidiType] = pDevice;          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
583                    if (!mMidiInputDevices[i]) {
584                            mMidiInputDevices[i] = pDevice;
585                            break;
586                    }
587            }
588    
589            fireMidiDeviceCountChanged(MidiInputDevices());
590          return pDevice;          return pDevice;
591      }      }
592    
593      MidiInputDevice* Sampler::GetMidiInputDevice(MidiInputDevice::type_t MidiType) {      int Sampler::GetDiskStreamCount() {
594          MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);          int count = 0;
595          return (iter != MidiInputDevices.end()) ? iter->second : NULL;          std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
596    
597            for(; it != EngineFactory::EngineInstances().end(); it++) {
598                count += (*it)->DiskStreamCount();
599            }
600    
601            return count;
602        }
603    
604        int Sampler::GetVoiceCount() {
605            int count = 0;
606            std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
607    
608            for(; it != EngineFactory::EngineInstances().end(); it++) {
609                count += (*it)->VoiceCount();
610            }
611    
612            return count;
613        }
614    
615        void Sampler::Reset() {
616            // delete sampler channels
617            try {
618                while (true) {
619                        SamplerChannelMap::iterator iter = mSamplerChannels.begin();
620                        if (iter == mSamplerChannels.end()) break;
621                        RemoveSamplerChannel(iter->second);
622                }
623            }
624            catch(...) {
625                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
626                exit(EXIT_FAILURE);
627            }
628    
629            // delete midi input devices
630            try {
631                while (true) {
632                        MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
633                        if (iter == mMidiInputDevices.end()) break;
634                        DestroyMidiInputDevice(iter->second);
635                }
636            }
637            catch(...) {
638                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
639                exit(EXIT_FAILURE);
640            }
641    
642            // delete audio output devices
643            try {
644                while (true) {
645                        AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
646                        if (iter == mAudioOutputDevices.end()) break;
647                        DestroyAudioOutputDevice(iter->second);
648                }
649            }
650            catch(...) {
651                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
652                exit(EXIT_FAILURE);
653            }
654    
655            // delete MIDI instrument maps
656            try {
657                MidiInstrumentMapper::RemoveAllMaps();
658            }
659            catch(...) {
660                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI instrument maps, exiting.\n" << std::flush;
661                exit(EXIT_FAILURE);
662            }
663    
664            // unload all instrument editor DLLs
665            InstrumentEditorFactory::ClosePlugins();
666      }      }
667    
668  } // namespace LinuxSampler  } // namespace LinuxSampler
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