/[svn]/linuxsampler/trunk/src/Sampler.cpp
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revision 123 by schoenebeck, Mon Jun 14 19:33:16 2004 UTC revision 1695 by schoenebeck, Sat Feb 16 01:09:33 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          // create new engine          fireEngineToBeChanged();
80          Engine* pNewEngine = NULL;  
81          switch (EngineType) {          // create new engine channel
82              case Engine::type_gig:          EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
83                  pNewEngine = new gig::Engine;          if (!pNewEngineChannel) throw Exception("Unknown engine type");
84                  break;  
85              default:          //FIXME: hack to allow fast retrieval of engine channel's sampler channel index
86                  throw LinuxSamplerException("Unknown engine type");          pNewEngineChannel->iSamplerChannelIndex = Index();
87    
88            // 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            // from now on get MIDI device and port from EngineChannel object
113            this->pMidiInputDevice = NULL;
114            this->iMidiPort        = 0;
115    
116          // connect new engine          pEngineChannel->StatusChanged(true);
117          pEngine = pNewEngine;          fireEngineChanged();
         if (pMidiInputDevice) pMidiInputDevice->Connect(pNewEngine, (MidiInputDevice::midi_chan_t) Index());  
         if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);  
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);
         if (pEngine) pMidiInputDevice->Connect(pEngine, MidiChannel);  
154      }      }
155    
156      Engine* SamplerChannel::GetEngine() {      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) {
157          return pEngine;          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      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {      EngineChannel* SamplerChannel::GetEngineChannel() {
180          return pMidiInputDevice;          return pEngineChannel;
181        }
182    
183        midi_chan_t SamplerChannel::GetMidiInputChannel() {
184            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::fireMidiDeviceToBeDestroyed(MidiInputDevice* pDevice) {
322            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
323                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceToBeDestroyed(pDevice);
324            }
325        }
326    
327        void Sampler::fireMidiDeviceCreated(MidiInputDevice* pDevice) {
328            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
329                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceCreated(pDevice);
330            }
331        }
332    
333        void Sampler::AddVoiceCountListener(VoiceCountListener* l) {
334            llVoiceCountListeners.AddListener(l);
335        }
336    
337        void Sampler::RemoveVoiceCountListener(VoiceCountListener* l) {
338            llVoiceCountListeners.RemoveListener(l);
339        }
340    
341        void Sampler::fireVoiceCountChanged(int ChannelId, int NewCount) {
342            for (int i = 0; i < llVoiceCountListeners.GetListenerCount(); i++) {
343                llVoiceCountListeners.GetListener(i)->VoiceCountChanged(ChannelId, NewCount);
344            }
345        }
346    
347        void Sampler::AddStreamCountListener(StreamCountListener* l) {
348            llStreamCountListeners.AddListener(l);
349        }
350    
351        void Sampler::RemoveStreamCountListener(StreamCountListener* l) {
352            llStreamCountListeners.RemoveListener(l);
353      }      }
354    
355        void Sampler::fireStreamCountChanged(int ChannelId, int NewCount) {
356            for (int i = 0; i < llStreamCountListeners.GetListenerCount(); i++) {
357                llStreamCountListeners.GetListener(i)->StreamCountChanged(ChannelId, NewCount);
358            }
359        }
360    
361        void Sampler::AddBufferFillListener(BufferFillListener* l) {
362            llBufferFillListeners.AddListener(l);
363        }
364    
365        void Sampler::RemoveBufferFillListener(BufferFillListener* l) {
366            llBufferFillListeners.RemoveListener(l);
367        }
368    
369        void Sampler::fireBufferFillChanged(int ChannelId, String FillData) {
370            for (int i = 0; i < llBufferFillListeners.GetListenerCount(); i++) {
371                llBufferFillListeners.GetListener(i)->BufferFillChanged(ChannelId, FillData);
372            }
373        }
374    
375        void Sampler::AddTotalStreamCountListener(TotalStreamCountListener* l) {
376            llTotalStreamCountListeners.AddListener(l);
377        }
378    
379        void Sampler::RemoveTotalStreamCountListener(TotalStreamCountListener* l) {
380            llTotalStreamCountListeners.RemoveListener(l);
381        }
382    
383        void Sampler::fireTotalStreamCountChanged(int NewCount) {
384            for (int i = 0; i < llTotalStreamCountListeners.GetListenerCount(); i++) {
385                llTotalStreamCountListeners.GetListener(i)->TotalStreamCountChanged(NewCount);
386            }
387        }
388    
389        void Sampler::AddTotalVoiceCountListener(TotalVoiceCountListener* l) {
390            llTotalVoiceCountListeners.AddListener(l);
391        }
392    
393        void Sampler::RemoveTotalVoiceCountListener(TotalVoiceCountListener* l) {
394            llTotalVoiceCountListeners.RemoveListener(l);
395        }
396    
397        void Sampler::fireTotalVoiceCountChanged(int NewCount) {
398            for (int i = 0; i < llTotalVoiceCountListeners.GetListenerCount(); i++) {
399                llTotalVoiceCountListeners.GetListener(i)->TotalVoiceCountChanged(NewCount);
400            }
401        }
402    
403        void Sampler::AddFxSendCountListener(FxSendCountListener* l) {
404            llFxSendCountListeners.AddListener(l);
405        }
406    
407        void Sampler::RemoveFxSendCountListener(FxSendCountListener* l) {
408            llFxSendCountListeners.RemoveListener(l);
409        }
410    
411        void Sampler::fireFxSendCountChanged(int ChannelId, int NewCount) {
412            for (int i = 0; i < llFxSendCountListeners.GetListenerCount(); i++) {
413                llFxSendCountListeners.GetListener(i)->FxSendCountChanged(ChannelId, NewCount);
414            }
415        }
416    
417        void Sampler::EventHandler::EngineToBeChanged(int ChannelId) {
418            // nothing to do here
419        }
420    
421        void Sampler::EventHandler::EngineChanged(int ChannelId) {
422            EngineChannel* engineChannel = pSampler->GetSamplerChannel(ChannelId)->GetEngineChannel();
423            if(engineChannel == NULL) return;
424            engineChannel->AddFxSendCountListener(this);
425        }
426    
427        void Sampler::EventHandler::FxSendCountChanged(int ChannelId, int NewCount) {
428            pSampler->fireFxSendCountChanged(ChannelId, NewCount);
429        }
430    
431    
432      SamplerChannel* Sampler::AddSamplerChannel() {      SamplerChannel* Sampler::AddSamplerChannel() {
433            // if there's no sampler channel yet
434            if (!mSamplerChannels.size()) {
435                SamplerChannel* pChannel = new SamplerChannel(this);
436                mSamplerChannels[0] = pChannel;
437                fireChannelAdded(pChannel);
438                fireChannelCountChanged(1);
439                pChannel->AddEngineChangeListener(&eventHandler);
440                return pChannel;
441            }
442    
443            // get the highest used sampler channel index
444            uint lastIndex = (--(mSamplerChannels.end()))->first;
445    
446            // check if we reached the index limit
447            if (lastIndex + 1 < lastIndex) {
448                // search for an unoccupied sampler channel index starting from 0
449                for (uint i = 0; i < lastIndex; i++) {
450                    if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
451                    // we found an unused index, so insert the new channel there
452                    SamplerChannel* pChannel = new SamplerChannel(this);
453                    mSamplerChannels[i] = pChannel;
454                    fireChannelAdded(pChannel);
455                    fireChannelCountChanged(SamplerChannels());
456                    pChannel->AddEngineChangeListener(&eventHandler);
457                    return pChannel;
458                }
459                throw Exception("Internal error: could not find unoccupied sampler channel index.");
460            }
461    
462            // we have not reached the index limit so we just add the channel past the highest index
463          SamplerChannel* pChannel = new SamplerChannel(this);          SamplerChannel* pChannel = new SamplerChannel(this);
464          vSamplerChannels.push_back(pChannel);          mSamplerChannels[lastIndex + 1] = pChannel;
465            fireChannelAdded(pChannel);
466            fireChannelCountChanged(SamplerChannels());
467            pChannel->AddEngineChangeListener(&eventHandler);
468          return pChannel;          return pChannel;
469      }      }
470    
471      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
472          if (uiSamplerChannel >= SamplerChannels()) return NULL;          return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
473          return vSamplerChannels[uiSamplerChannel];      }
474    
475        std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
476            return mSamplerChannels;
477      }      }
478    
479      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
480          std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
481          for (; iterChan != vSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
482              if (*iterChan == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
483                  vSamplerChannels.erase(iterChan);                  fireChannelToBeRemoved(pSamplerChannel);
484                    pSamplerChannel->RemoveAllEngineChangeListeners();
485                    mSamplerChannels.erase(iterChan);
486                  delete pSamplerChannel;                  delete pSamplerChannel;
487                    fireChannelCountChanged(SamplerChannels());
488                  return;                  return;
489              }              }
490          }          }
# Line 195  namespace LinuxSampler { Line 500  namespace LinuxSampler {
500          return AudioOutputDeviceFactory::AvailableDrivers();          return AudioOutputDeviceFactory::AvailableDrivers();
501      }      }
502    
503      AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {      std::vector<String> Sampler::AvailableMidiInputDrivers() {
504            return MidiInputDeviceFactory::AvailableDrivers();
505        }
506    
507        std::vector<String> Sampler::AvailableEngineTypes() {
508            return EngineFactory::AvailableEngineTypes();
509        }
510    
511        AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (Exception) {
512          // create new device          // create new device
513          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
514    
         // activate device  
         pDevice->Play();  
   
515          // add new audio device to the audio device list          // add new audio device to the audio device list
516          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
517              if (!mAudioOutputDevices[i]) {              if (!mAudioOutputDevices[i]) {
# Line 210  namespace LinuxSampler { Line 520  namespace LinuxSampler {
520              }              }
521          }          }
522    
523            fireAudioDeviceCountChanged(AudioOutputDevices());
524          return pDevice;          return pDevice;
525      }      }
526    
# Line 217  namespace LinuxSampler { Line 528  namespace LinuxSampler {
528          return mAudioOutputDevices.size();          return mAudioOutputDevices.size();
529      }      }
530    
531        uint Sampler::MidiInputDevices() {
532            return mMidiInputDevices.size();
533        }
534    
535      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
536          return mAudioOutputDevices;          return mAudioOutputDevices;
537      }      }
538    
539      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {      std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
540            return mMidiInputDevices;
541        }
542    
543        void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
544          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
545          for (; iter != mAudioOutputDevices.end(); iter++) {          for (; iter != mAudioOutputDevices.end(); iter++) {
546              if (iter->second == pDevice) {              if (iter->second == pDevice) {
547                  // check if there are still sampler engines connected to this device                  // check if there are still sampler engines connected to this device
548                  for (uint i = 0; i < SamplerChannels(); i++)                  for (uint i = 0; i < SamplerChannels(); i++)
549                      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.");
550    
551                  // disable device                  // disable device
552                  pDevice->Stop();                  pDevice->Stop();
# Line 237  namespace LinuxSampler { Line 556  namespace LinuxSampler {
556    
557                  // destroy and free device from memory                  // destroy and free device from memory
558                  delete pDevice;                  delete pDevice;
559    
560                    fireAudioDeviceCountChanged(AudioOutputDevices());
561                    break;
562              }              }
563          }          }
564      }      }
565    
566      MidiInputDevice* Sampler::CreateMidiInputDevice(MidiInputDevice::type_t MidiType) {      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
567          // check if device already created          MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
568          MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);          for (; iter != mMidiInputDevices.end(); iter++) {
569          if (pDevice) return pDevice;              if (iter->second == pDevice) {
570                    // check if there are still sampler engines connected to this device
571                    for (uint i = 0; i < SamplerChannels(); i++)
572                        if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw Exception("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
573    
574          // create new device                  fireMidiDeviceToBeDestroyed(pDevice);
575          switch (MidiType) {  
576              case MidiInputDevice::type_alsa:                  // disable device
577                  pDevice = new MidiInputDeviceAlsa;                  pDevice->StopListen();
578    
579                    // remove device from the device list
580                    mMidiInputDevices.erase(iter);
581    
582                    // destroy and free device from memory
583                    delete pDevice;
584    
585                    fireMidiDeviceCountChanged(MidiInputDevices());
586                  break;                  break;
587              default:              }
                 throw LinuxSamplerException("Unknown audio output device type");  
588          }          }
589        }
590    
591          // activate device      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception) {
592          pDevice->Listen();          // create new device
593            MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
594    
595          // add new MIDI device to the MIDI device list          // add new device to the midi device list
596          MidiInputDevices[MidiType] = pDevice;          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
597                    if (!mMidiInputDevices[i]) {
598                            mMidiInputDevices[i] = pDevice;
599                            break;
600                    }
601            }
602    
603            fireMidiDeviceCreated(pDevice);
604            fireMidiDeviceCountChanged(MidiInputDevices());
605          return pDevice;          return pDevice;
606      }      }
607    
608      MidiInputDevice* Sampler::GetMidiInputDevice(MidiInputDevice::type_t MidiType) {      int Sampler::GetDiskStreamCount() {
609          MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);          int count = 0;
610          return (iter != MidiInputDevices.end()) ? iter->second : NULL;          std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
611    
612            for(; it != EngineFactory::EngineInstances().end(); it++) {
613                count += (*it)->DiskStreamCount();
614            }
615    
616            return count;
617        }
618    
619        int Sampler::GetVoiceCount() {
620            int count = 0;
621            std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
622    
623            for(; it != EngineFactory::EngineInstances().end(); it++) {
624                count += (*it)->VoiceCount();
625            }
626    
627            return count;
628        }
629    
630        void Sampler::Reset() {
631            // delete sampler channels
632            try {
633                while (true) {
634                        SamplerChannelMap::iterator iter = mSamplerChannels.begin();
635                        if (iter == mSamplerChannels.end()) break;
636                        RemoveSamplerChannel(iter->second);
637                }
638            }
639            catch(...) {
640                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
641                exit(EXIT_FAILURE);
642            }
643    
644            // delete midi input devices
645            try {
646                while (true) {
647                        MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
648                        if (iter == mMidiInputDevices.end()) break;
649                        DestroyMidiInputDevice(iter->second);
650                }
651            }
652            catch(...) {
653                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
654                exit(EXIT_FAILURE);
655            }
656    
657            // delete audio output devices
658            try {
659                while (true) {
660                        AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
661                        if (iter == mAudioOutputDevices.end()) break;
662                        DestroyAudioOutputDevice(iter->second);
663                }
664            }
665            catch(...) {
666                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
667                exit(EXIT_FAILURE);
668            }
669    
670            // delete MIDI instrument maps
671            try {
672                MidiInstrumentMapper::RemoveAllMaps();
673            }
674            catch(...) {
675                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI instrument maps, exiting.\n" << std::flush;
676                exit(EXIT_FAILURE);
677            }
678    
679            // unload all instrument editor DLLs
680            InstrumentEditorFactory::ClosePlugins();
681      }      }
682    
683  } // namespace LinuxSampler  } // namespace LinuxSampler
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