/[svn]/linuxsampler/trunk/src/Sampler.cpp
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Diff of /linuxsampler/trunk/src/Sampler.cpp

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revision 123 by schoenebeck, Mon Jun 14 19:33:16 2004 UTC revision 1541 by iliev, Tue Dec 4 18:09:26 2007 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 - 2007 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          // create new engine          if (pEngineChannel) {
73          Engine* pNewEngine = NULL;              if (!strcasecmp(pEngineChannel->EngineName().c_str(), EngineType.c_str())) {
74          switch (EngineType) {                  dmsg(2,("OK\n"));
75              case Engine::type_gig:                  return;
76                  pNewEngine = new gig::Engine;              }
                 break;  
             default:  
                 throw LinuxSamplerException("Unknown engine type");  
77          }          }
78    
79          // disconnect old engine          // create new engine channel
80          if (pEngine) {          EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
81              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);          if (!pNewEngineChannel) throw Exception("Unknown engine type");
82              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);  
83              delete pEngine;          //FIXME: hack to allow fast retrieval of engine channel's sampler channel index
84          }          pNewEngineChannel->iSamplerChannelIndex = Index();
85    
86            // dereference midi input port.
87            MidiInputPort* pMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
88            // disconnect old engine channel
89            if (pEngineChannel) {
90                Engine* engine = pEngineChannel->GetEngine();
91                if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
92    
93                if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
94                if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
95                EngineChannelFactory::Destroy(pEngineChannel);
96    
97                // reconnect engine if it still exists
98                const std::set<Engine*>& engines = EngineFactory::EngineInstances();
99                if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
100            }
101    
102            // connect new engine channel
103            if (pAudioOutputDevice) {
104                pNewEngineChannel->Connect(pAudioOutputDevice);
105                pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
106            }
107            if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, GetMidiInputChannel());
108            pEngineChannel = pNewEngineChannel;
109    
110            // from now on get MIDI device and port from EngineChannel object
111            this->pMidiInputDevice = NULL;
112            this->iMidiPort        = 0;
113    
114          // connect new engine          pEngineChannel->StatusChanged(true);
115          pEngine = pNewEngine;          fireEngineChanged();
         if (pMidiInputDevice) pMidiInputDevice->Connect(pNewEngine, (MidiInputDevice::midi_chan_t) Index());  
         if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);  
116          dmsg(2,("OK\n"));          dmsg(2,("OK\n"));
117      }      }
118    
119      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
120            if(pAudioOutputDevice == pDevice) return;
121    
122          // disconnect old device          // disconnect old device
123          if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);          if (pAudioOutputDevice && pEngineChannel) {
124                Engine* engine = pEngineChannel->GetEngine();
125                pAudioOutputDevice->Disconnect(engine);
126    
127                pEngineChannel->DisconnectAudioOutputDevice();
128    
129                // reconnect engine if it still exists
130                const std::set<Engine*>& engines = EngineFactory::EngineInstances();
131                if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
132            }
133    
134          // connect new device          // connect new device
135          pAudioOutputDevice = pDevice;          pAudioOutputDevice = pDevice;
136          if (pEngine) pAudioOutputDevice->Connect(pEngine);          if (pEngineChannel) {
137                pEngineChannel->Connect(pAudioOutputDevice);
138                pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
139            }
140      }      }
141    
142      void SamplerChannel::SetMidiInputDevice(MidiInputDevice::type_t MidiType, MidiInputDevice::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
143          // get / create desired midi device         SetMidiInput(pDevice, 0, GetMidiInputChannel());
144          MidiInputDevice* pDevice = pSampler->GetMidiInputDevice(MidiType);      }
         if (!pDevice) pDevice = pSampler->CreateMidiInputDevice(MidiType);  
145    
146          // disconnect old device      void SamplerChannel::SetMidiInputPort(int MidiPort) {
147          if (pMidiInputDevice && pEngine) pMidiInputDevice->Disconnect(pEngine);         SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());
148        }
149    
150          // connect new device      void SamplerChannel::SetMidiInputChannel(midi_chan_t MidiChannel) {
151          pMidiInputDevice = pDevice;         SetMidiInput(GetMidiInputDevice(), GetMidiInputPort(), MidiChannel);
         if (pEngine) pMidiInputDevice->Connect(pEngine, MidiChannel);  
152      }      }
153    
154      Engine* SamplerChannel::GetEngine() {      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) {
155          return pEngine;          if (!pDevice) throw Exception("No MIDI input device assigned.");
156    
157            // get old and new midi input port
158            MidiInputPort* pOldMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
159            MidiInputPort* pNewMidiInputPort = pDevice->GetPort(iMidiPort);
160    
161            // disconnect old device port
162            if (pOldMidiInputPort && pEngineChannel) pOldMidiInputPort->Disconnect(pEngineChannel);
163            // remember new device, port and channel if not engine channel yet created
164            if (!pEngineChannel) {
165                this->pMidiInputDevice = pDevice;
166                this->iMidiPort        = iMidiPort;
167                this->midiChannel      = MidiChannel;
168            }
169    
170            // connect new device port
171            if (pNewMidiInputPort && pEngineChannel) pNewMidiInputPort->Connect(pEngineChannel, MidiChannel);
172            // Ooops.
173            if (pNewMidiInputPort == NULL)
174                throw Exception("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
175      }      }
176    
177      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {      EngineChannel* SamplerChannel::GetEngineChannel() {
178          return pMidiInputDevice;          return pEngineChannel;
179        }
180    
181        midi_chan_t SamplerChannel::GetMidiInputChannel() {
182            if (pEngineChannel) this->midiChannel = pEngineChannel->MidiChannel();
183            return this->midiChannel;
184        }
185    
186        int SamplerChannel::GetMidiInputPort() {
187            MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : NULL;
188            if (pMidiInputPort) this->iMidiPort = (int) pMidiInputPort->GetPortNumber();
189            return iMidiPort;
190      }      }
191    
192      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
193          return pAudioOutputDevice;          return pAudioOutputDevice;
194      }      }
195    
196        MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
197            if (pEngineChannel)
198                pMidiInputDevice = (pEngineChannel->GetMidiInputPort()) ? pEngineChannel->GetMidiInputPort()->GetDevice() : NULL;
199            return pMidiInputDevice;
200        }
201    
202      uint SamplerChannel::Index() {      uint SamplerChannel::Index() {
203          if (iIndex >= 0) return iIndex;          if (iIndex >= 0) return iIndex;
204    
205          std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();          Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
206          for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {          for (; iter != pSampler->mSamplerChannels.end(); iter++) {
207              if (*iter == this) {              if (iter->second == this) {
208                  iIndex = i;                  iIndex = iter->first;
209                  return i;                  return iIndex;
210              }              }
211          }          }
212    
213          throw LinuxSamplerException("SamplerChannel index not found");          throw Exception("Internal error: SamplerChannel index not found");
214        }
215    
216        void SamplerChannel::AddEngineChangeListener(EngineChangeListener* l) {
217            llEngineChangeListeners.AddListener(l);
218        }
219    
220        void SamplerChannel::RemoveEngineChangeListener(EngineChangeListener* l) {
221           llEngineChangeListeners.RemoveListener(l);
222        }
223    
224        void SamplerChannel::RemoveAllEngineChangeListeners() {
225           llEngineChangeListeners.RemoveAllListeners();
226        }
227    
228        void SamplerChannel::fireEngineChanged() {
229            for (int i = 0; i < llEngineChangeListeners.GetListenerCount(); i++) {
230                llEngineChangeListeners.GetListener(i)->EngineChanged(Index());
231            }
232        }
233    
234        MidiInputPort* SamplerChannel::__GetMidiInputDevicePort(int iMidiPort) {
235            MidiInputPort* pMidiInputPort = NULL;
236            MidiInputDevice* pMidiInputDevice = GetMidiInputDevice();
237            if (pMidiInputDevice)
238                pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
239            return pMidiInputPort;
240      }      }
241    
242    
243    
244      // ******************************************************************      // ******************************************************************
245      // * Sampler      // * Sampler
246    
247      Sampler::Sampler() {      Sampler::Sampler() {
248            eventHandler.SetSampler(this);
249      }      }
250    
251      Sampler::~Sampler() {      Sampler::~Sampler() {
252          // delete sampler channels          Reset();
253          {      }
254              std::vector<SamplerChannel*>::iterator iter = vSamplerChannels.begin();  
255              for (; iter != vSamplerChannels.end(); iter++) delete *iter;      uint Sampler::SamplerChannels() {
256            return mSamplerChannels.size();
257        }
258    
259        void Sampler::AddChannelCountListener(ChannelCountListener* l) {
260            llChannelCountListeners.AddListener(l);
261        }
262    
263        void Sampler::RemoveChannelCountListener(ChannelCountListener* l) {
264           llChannelCountListeners.RemoveListener(l);
265        }
266    
267        void Sampler::fireChannelCountChanged(int NewCount) {
268            for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
269                llChannelCountListeners.GetListener(i)->ChannelCountChanged(NewCount);
270          }          }
271        }
272    
273          // delete midi input devices      void Sampler::AddAudioDeviceCountListener(AudioDeviceCountListener* l) {
274          {          llAudioDeviceCountListeners.AddListener(l);
275              MidiInputDeviceMap::iterator iter = MidiInputDevices.begin();      }
276              for (; iter != MidiInputDevices.end(); iter++) {  
277                  MidiInputDevice* pDevice = iter->second;      void Sampler::RemoveAudioDeviceCountListener(AudioDeviceCountListener* l) {
278                  pDevice->StopListen();          llAudioDeviceCountListeners.RemoveListener(l);
279                  delete pDevice;      }
280              }  
281        void Sampler::fireAudioDeviceCountChanged(int NewCount) {
282            for (int i = 0; i < llAudioDeviceCountListeners.GetListenerCount(); i++) {
283                llAudioDeviceCountListeners.GetListener(i)->AudioDeviceCountChanged(NewCount);
284          }          }
285        }
286    
287          // delete audio output devices      void Sampler::AddMidiDeviceCountListener(MidiDeviceCountListener* l) {
288          {          llMidiDeviceCountListeners.AddListener(l);
289              AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();      }
290              for (; iter != mAudioOutputDevices.end(); iter++) {  
291                  AudioOutputDevice* pDevice = iter->second;      void Sampler::RemoveMidiDeviceCountListener(MidiDeviceCountListener* l) {
292                  pDevice->Stop();          llMidiDeviceCountListeners.RemoveListener(l);
293                  delete pDevice;      }
294              }  
295        void Sampler::fireMidiDeviceCountChanged(int NewCount) {
296            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
297                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceCountChanged(NewCount);
298          }          }
299      }      }
300    
301      uint Sampler::SamplerChannels() {      void Sampler::AddVoiceCountListener(VoiceCountListener* l) {
302          return vSamplerChannels.size();          llVoiceCountListeners.AddListener(l);
303        }
304    
305        void Sampler::RemoveVoiceCountListener(VoiceCountListener* l) {
306            llVoiceCountListeners.RemoveListener(l);
307        }
308    
309        void Sampler::fireVoiceCountChanged(int ChannelId, int NewCount) {
310            for (int i = 0; i < llVoiceCountListeners.GetListenerCount(); i++) {
311                llVoiceCountListeners.GetListener(i)->VoiceCountChanged(ChannelId, NewCount);
312            }
313        }
314    
315        void Sampler::AddStreamCountListener(StreamCountListener* l) {
316            llStreamCountListeners.AddListener(l);
317        }
318    
319        void Sampler::RemoveStreamCountListener(StreamCountListener* l) {
320            llStreamCountListeners.RemoveListener(l);
321        }
322    
323        void Sampler::fireStreamCountChanged(int ChannelId, int NewCount) {
324            for (int i = 0; i < llStreamCountListeners.GetListenerCount(); i++) {
325                llStreamCountListeners.GetListener(i)->StreamCountChanged(ChannelId, NewCount);
326            }
327        }
328    
329        void Sampler::AddBufferFillListener(BufferFillListener* l) {
330            llBufferFillListeners.AddListener(l);
331        }
332    
333        void Sampler::RemoveBufferFillListener(BufferFillListener* l) {
334            llBufferFillListeners.RemoveListener(l);
335        }
336    
337        void Sampler::fireBufferFillChanged(int ChannelId, String FillData) {
338            for (int i = 0; i < llBufferFillListeners.GetListenerCount(); i++) {
339                llBufferFillListeners.GetListener(i)->BufferFillChanged(ChannelId, FillData);
340            }
341        }
342    
343        void Sampler::AddTotalStreamCountListener(TotalStreamCountListener* l) {
344            llTotalStreamCountListeners.AddListener(l);
345        }
346    
347        void Sampler::RemoveTotalStreamCountListener(TotalStreamCountListener* l) {
348            llTotalStreamCountListeners.RemoveListener(l);
349        }
350    
351        void Sampler::fireTotalStreamCountChanged(int NewCount) {
352            for (int i = 0; i < llTotalStreamCountListeners.GetListenerCount(); i++) {
353                llTotalStreamCountListeners.GetListener(i)->TotalStreamCountChanged(NewCount);
354            }
355        }
356    
357        void Sampler::AddTotalVoiceCountListener(TotalVoiceCountListener* l) {
358            llTotalVoiceCountListeners.AddListener(l);
359        }
360    
361        void Sampler::RemoveTotalVoiceCountListener(TotalVoiceCountListener* l) {
362            llTotalVoiceCountListeners.RemoveListener(l);
363        }
364    
365        void Sampler::fireTotalVoiceCountChanged(int NewCount) {
366            for (int i = 0; i < llTotalVoiceCountListeners.GetListenerCount(); i++) {
367                llTotalVoiceCountListeners.GetListener(i)->TotalVoiceCountChanged(NewCount);
368            }
369        }
370    
371        void Sampler::AddFxSendCountListener(FxSendCountListener* l) {
372            llFxSendCountListeners.AddListener(l);
373        }
374    
375        void Sampler::RemoveFxSendCountListener(FxSendCountListener* l) {
376            llFxSendCountListeners.RemoveListener(l);
377        }
378    
379        void Sampler::fireFxSendCountChanged(int ChannelId, int NewCount) {
380            for (int i = 0; i < llFxSendCountListeners.GetListenerCount(); i++) {
381                llFxSendCountListeners.GetListener(i)->FxSendCountChanged(ChannelId, NewCount);
382            }
383        }
384    
385        void Sampler::EventHandler::EngineChanged(int ChannelId) {
386            EngineChannel* engineChannel = pSampler->GetSamplerChannel(ChannelId)->GetEngineChannel();
387            if(engineChannel == NULL) return;
388            engineChannel->AddFxSendCountListener(this);
389      }      }
390    
391        void Sampler::EventHandler::FxSendCountChanged(int ChannelId, int NewCount) {
392            pSampler->fireFxSendCountChanged(ChannelId, NewCount);
393        }
394    
395    
396      SamplerChannel* Sampler::AddSamplerChannel() {      SamplerChannel* Sampler::AddSamplerChannel() {
397            // if there's no sampler channel yet
398            if (!mSamplerChannels.size()) {
399                SamplerChannel* pChannel = new SamplerChannel(this);
400                mSamplerChannels[0] = pChannel;
401                fireChannelCountChanged(1);
402                pChannel->AddEngineChangeListener(&eventHandler);
403                return pChannel;
404            }
405    
406            // get the highest used sampler channel index
407            uint lastIndex = (--(mSamplerChannels.end()))->first;
408    
409            // check if we reached the index limit
410            if (lastIndex + 1 < lastIndex) {
411                // search for an unoccupied sampler channel index starting from 0
412                for (uint i = 0; i < lastIndex; i++) {
413                    if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
414                    // we found an unused index, so insert the new channel there
415                    SamplerChannel* pChannel = new SamplerChannel(this);
416                    mSamplerChannels[i] = pChannel;
417                    fireChannelCountChanged(SamplerChannels());
418                    pChannel->AddEngineChangeListener(&eventHandler);
419                    return pChannel;
420                }
421                throw Exception("Internal error: could not find unoccupied sampler channel index.");
422            }
423    
424            // we have not reached the index limit so we just add the channel past the highest index
425          SamplerChannel* pChannel = new SamplerChannel(this);          SamplerChannel* pChannel = new SamplerChannel(this);
426          vSamplerChannels.push_back(pChannel);          mSamplerChannels[lastIndex + 1] = pChannel;
427            fireChannelCountChanged(SamplerChannels());
428            pChannel->AddEngineChangeListener(&eventHandler);
429          return pChannel;          return pChannel;
430      }      }
431    
432      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
433          if (uiSamplerChannel >= SamplerChannels()) return NULL;          return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
434          return vSamplerChannels[uiSamplerChannel];      }
435    
436        std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
437            return mSamplerChannels;
438      }      }
439    
440      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
441          std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
442          for (; iterChan != vSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
443              if (*iterChan == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
444                  vSamplerChannels.erase(iterChan);                  pSamplerChannel->RemoveAllEngineChangeListeners();
445                    mSamplerChannels.erase(iterChan);
446                  delete pSamplerChannel;                  delete pSamplerChannel;
447                    fireChannelCountChanged(SamplerChannels());
448                  return;                  return;
449              }              }
450          }          }
# Line 195  namespace LinuxSampler { Line 460  namespace LinuxSampler {
460          return AudioOutputDeviceFactory::AvailableDrivers();          return AudioOutputDeviceFactory::AvailableDrivers();
461      }      }
462    
463      AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {      std::vector<String> Sampler::AvailableMidiInputDrivers() {
464            return MidiInputDeviceFactory::AvailableDrivers();
465        }
466    
467        std::vector<String> Sampler::AvailableEngineTypes() {
468            return EngineFactory::AvailableEngineTypes();
469        }
470    
471        AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (Exception) {
472          // create new device          // create new device
473          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
474    
         // activate device  
         pDevice->Play();  
   
475          // add new audio device to the audio device list          // add new audio device to the audio device list
476          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
477              if (!mAudioOutputDevices[i]) {              if (!mAudioOutputDevices[i]) {
# Line 210  namespace LinuxSampler { Line 480  namespace LinuxSampler {
480              }              }
481          }          }
482    
483            fireAudioDeviceCountChanged(AudioOutputDevices());
484          return pDevice;          return pDevice;
485      }      }
486    
# Line 217  namespace LinuxSampler { Line 488  namespace LinuxSampler {
488          return mAudioOutputDevices.size();          return mAudioOutputDevices.size();
489      }      }
490    
491        uint Sampler::MidiInputDevices() {
492            return mMidiInputDevices.size();
493        }
494    
495      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
496          return mAudioOutputDevices;          return mAudioOutputDevices;
497      }      }
498    
499      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {      std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
500            return mMidiInputDevices;
501        }
502    
503        void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
504          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
505          for (; iter != mAudioOutputDevices.end(); iter++) {          for (; iter != mAudioOutputDevices.end(); iter++) {
506              if (iter->second == pDevice) {              if (iter->second == pDevice) {
507                  // check if there are still sampler engines connected to this device                  // check if there are still sampler engines connected to this device
508                  for (uint i = 0; i < SamplerChannels(); i++)                  for (uint i = 0; i < SamplerChannels(); i++)
509                      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.");
510    
511                  // disable device                  // disable device
512                  pDevice->Stop();                  pDevice->Stop();
# Line 237  namespace LinuxSampler { Line 516  namespace LinuxSampler {
516    
517                  // destroy and free device from memory                  // destroy and free device from memory
518                  delete pDevice;                  delete pDevice;
519    
520                    fireAudioDeviceCountChanged(AudioOutputDevices());
521                    break;
522              }              }
523          }          }
524      }      }
525    
526      MidiInputDevice* Sampler::CreateMidiInputDevice(MidiInputDevice::type_t MidiType) {      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
527          // check if device already created          MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
528          MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);          for (; iter != mMidiInputDevices.end(); iter++) {
529          if (pDevice) return pDevice;              if (iter->second == pDevice) {
530                    // check if there are still sampler engines connected to this device
531                    for (uint i = 0; i < SamplerChannels(); i++)
532                        if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw Exception("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
533    
534          // create new device                  // disable device
535          switch (MidiType) {                  pDevice->StopListen();
536              case MidiInputDevice::type_alsa:  
537                  pDevice = new MidiInputDeviceAlsa;                  // remove device from the device list
538                    mMidiInputDevices.erase(iter);
539    
540                    // destroy and free device from memory
541                    delete pDevice;
542    
543                    fireMidiDeviceCountChanged(MidiInputDevices());
544                  break;                  break;
545              default:              }
                 throw LinuxSamplerException("Unknown audio output device type");  
546          }          }
547        }
548    
549          // activate device      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception) {
550          pDevice->Listen();          // create new device
551            MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
552    
553          // add new MIDI device to the MIDI device list          // add new device to the midi device list
554          MidiInputDevices[MidiType] = pDevice;          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
555                    if (!mMidiInputDevices[i]) {
556                            mMidiInputDevices[i] = pDevice;
557                            break;
558                    }
559            }
560    
561            fireMidiDeviceCountChanged(MidiInputDevices());
562          return pDevice;          return pDevice;
563      }      }
564    
565      MidiInputDevice* Sampler::GetMidiInputDevice(MidiInputDevice::type_t MidiType) {      int Sampler::GetDiskStreamCount() {
566          MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);          int count = 0;
567          return (iter != MidiInputDevices.end()) ? iter->second : NULL;          std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
568    
569            for(; it != EngineFactory::EngineInstances().end(); it++) {
570                count += (*it)->DiskStreamCount();
571            }
572    
573            return count;
574        }
575    
576        int Sampler::GetVoiceCount() {
577            int count = 0;
578            std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
579    
580            for(; it != EngineFactory::EngineInstances().end(); it++) {
581                count += (*it)->VoiceCount();
582            }
583    
584            return count;
585        }
586    
587        void Sampler::Reset() {
588            // delete sampler channels
589            try {
590                while (true) {
591                        SamplerChannelMap::iterator iter = mSamplerChannels.begin();
592                        if (iter == mSamplerChannels.end()) break;
593                        RemoveSamplerChannel(iter->second);
594                }
595            }
596            catch(...) {
597                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
598                exit(EXIT_FAILURE);
599            }
600    
601            // delete midi input devices
602            try {
603                while (true) {
604                        MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
605                        if (iter == mMidiInputDevices.end()) break;
606                        DestroyMidiInputDevice(iter->second);
607                }
608            }
609            catch(...) {
610                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
611                exit(EXIT_FAILURE);
612            }
613    
614            // delete audio output devices
615            try {
616                while (true) {
617                        AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
618                        if (iter == mAudioOutputDevices.end()) break;
619                        DestroyAudioOutputDevice(iter->second);
620                }
621            }
622            catch(...) {
623                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
624                exit(EXIT_FAILURE);
625            }
626    
627            // delete MIDI instrument maps
628            try {
629                MidiInstrumentMapper::RemoveAllMaps();
630            }
631            catch(...) {
632                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI instrument maps, exiting.\n" << std::flush;
633                exit(EXIT_FAILURE);
634            }
635    
636            // unload all instrument editor DLLs
637            InstrumentEditorFactory::ClosePlugins();
638      }      }
639    
640  } // namespace LinuxSampler  } // namespace LinuxSampler
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