/[svn]/linuxsampler/trunk/src/Sampler.cpp
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revision 76 by senkov, Fri May 14 19:10:21 2004 UTC revision 1723 by schoenebeck, Sun Apr 20 08:53:39 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   ***************************************************************************/   ***************************************************************************/
23    
24    #include <sstream>
25    
26  #include "Sampler.h"  #include "Sampler.h"
27    
28  #include "audiodriver/AudioOutputDeviceAlsa.h"  #include "common/global_private.h"
29  #include "audiodriver/AudioOutputDeviceJack.h"  #include "engines/EngineFactory.h"
30  #include "mididriver/MidiInputDeviceAlsa.h"  #include "engines/EngineChannelFactory.h"
31  #include "engines/gig/Engine.h"  #include "plugins/InstrumentEditorFactory.h"
32    #include "drivers/audio/AudioOutputDeviceFactory.h"
33    #include "drivers/midi/MidiInputDeviceFactory.h"
34    #include "drivers/midi/MidiInstrumentMapper.h"
35    #include "common/Features.h"
36    
37  namespace LinuxSampler {  namespace LinuxSampler {
38    
# Line 34  namespace LinuxSampler { Line 41  namespace LinuxSampler {
41    
42      SamplerChannel::SamplerChannel(Sampler* pS) {      SamplerChannel::SamplerChannel(Sampler* pS) {
43          pSampler           = pS;          pSampler           = pS;
44          pEngine            = NULL;          pEngineChannel     = NULL;
         pMidiInputDevice   = NULL;  
45          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
46            pMidiInputDevice   = NULL;
47            iMidiPort          = 0;
48            midiChannel        = midi_chan_all;
49          iIndex             = -1;          iIndex             = -1;
50      }      }
51    
52      SamplerChannel::~SamplerChannel() {      SamplerChannel::~SamplerChannel() {
53          if (pEngine) {          if (pEngineChannel) {
54              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);              Engine* engine = pEngineChannel->GetEngine();
55              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
56              delete pEngine;  
57                MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : __GetMidiInputDevicePort(GetMidiInputChannel());
58                if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
59                if (pEngineChannel) {
60                    if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
61                    EngineChannelFactory::Destroy(pEngineChannel);
62    
63                    // reconnect engine if it still exists
64                    const std::set<Engine*>& engines = EngineFactory::EngineInstances();
65                    if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
66                }
67          }          }
68      }      }
69    
70      void SamplerChannel::LoadEngine(Engine::type_t EngineType) {      void SamplerChannel::SetEngineType(String EngineType) throw (Exception) {
71          dmsg(2,("SamplerChannel: Loading engine..."));          dmsg(2,("SamplerChannel: Assigning engine type..."));
72            
73            if (pEngineChannel) {
74                if (!strcasecmp(pEngineChannel->EngineName().c_str(), EngineType.c_str())) {
75                    dmsg(2,("OK\n"));
76                    return;
77                }
78            }
79    
80          // create new engine          fireEngineToBeChanged();
81          Engine* pNewEngine = NULL;  
82          switch (EngineType) {          // create new engine channel
83              case Engine::type_gig:          EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
84                  pNewEngine = new gig::Engine;          if (!pNewEngineChannel) throw Exception("Unknown engine type");
85                  break;  
86              default:          //FIXME: hack to allow fast retrieval of engine channel's sampler channel index
87                  throw LinuxSamplerException("Unknown engine type");          pNewEngineChannel->iSamplerChannelIndex = Index();
88    
89            // dereference midi input port.
90            MidiInputPort* pMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
91            // disconnect old engine channel
92            if (pEngineChannel) {
93                Engine* engine = pEngineChannel->GetEngine();
94                if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
95    
96                if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
97                if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
98                EngineChannelFactory::Destroy(pEngineChannel);
99    
100                // reconnect engine if it still exists
101                const std::set<Engine*>& engines = EngineFactory::EngineInstances();
102                if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
103          }          }
104    
105          // disconnect old engine          // connect new engine channel
106          if (pEngine) {          if (pAudioOutputDevice) {
107              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);              pNewEngineChannel->Connect(pAudioOutputDevice);
108              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
             delete pEngine;  
109          }          }
110            if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, GetMidiInputChannel());
111            pEngineChannel = pNewEngineChannel;
112    
113            // from now on get MIDI device and port from EngineChannel object
114            this->pMidiInputDevice = NULL;
115            this->iMidiPort        = 0;
116    
117          // connect new engine          pEngineChannel->StatusChanged(true);
118          pEngine = pNewEngine;          fireEngineChanged();
         if (pMidiInputDevice) pMidiInputDevice->Connect(pNewEngine, (MidiInputDevice::midi_chan_t) Index());  
         if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);  
119          dmsg(2,("OK\n"));          dmsg(2,("OK\n"));
120      }      }
121    
122      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice::type_t AudioType) {      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
123          // get / create desired audio device          if(pAudioOutputDevice == pDevice) return;
         AudioOutputDevice* pDevice = pSampler->GetAudioOutputDevice(AudioType);  
         if (!pDevice) pDevice = pSampler->CreateAudioOutputDevice(AudioType);  
124    
125          // disconnect old device          // disconnect old device
126          if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);          if (pAudioOutputDevice && pEngineChannel) {
127                Engine* engine = pEngineChannel->GetEngine();
128                pAudioOutputDevice->Disconnect(engine);
129    
130                pEngineChannel->DisconnectAudioOutputDevice();
131    
132                // reconnect engine if it still exists
133                const std::set<Engine*>& engines = EngineFactory::EngineInstances();
134                if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
135            }
136    
137          // connect new device          // connect new device
138          pAudioOutputDevice = pDevice;          pAudioOutputDevice = pDevice;
139          if (pEngine) pAudioOutputDevice->Connect(pEngine);          if (pEngineChannel) {
140                pEngineChannel->Connect(pAudioOutputDevice);
141                pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
142            }
143        }
144    
145        void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
146           SetMidiInput(pDevice, 0, GetMidiInputChannel());
147      }      }
148    
149      void SamplerChannel::SetMidiInputDevice(MidiInputDevice::type_t MidiType, MidiInputDevice::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputPort(int MidiPort) {
150          // get / create desired midi device         SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());
151          MidiInputDevice* pDevice = pSampler->GetMidiInputDevice(MidiType);      }
         if (!pDevice) pDevice = pSampler->CreateMidiInputDevice(MidiType);  
152    
153          // disconnect old device      void SamplerChannel::SetMidiInputChannel(midi_chan_t MidiChannel) {
154          if (pMidiInputDevice && pEngine) pMidiInputDevice->Disconnect(pEngine);         SetMidiInput(GetMidiInputDevice(), GetMidiInputPort(), MidiChannel);
155        }
156    
157          // connect new device      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) {
158          pMidiInputDevice = pDevice;          if (!pDevice) throw Exception("No MIDI input device assigned.");
159          if (pEngine) pMidiInputDevice->Connect(pEngine, MidiChannel);  
160            // get old and new midi input port
161            MidiInputPort* pOldMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
162            MidiInputPort* pNewMidiInputPort = pDevice->GetPort(iMidiPort);
163    
164            // disconnect old device port
165            if (pOldMidiInputPort && pEngineChannel) pOldMidiInputPort->Disconnect(pEngineChannel);
166            // remember new device, port and channel if not engine channel yet created
167            if (!pEngineChannel) {
168                this->pMidiInputDevice = pDevice;
169                this->iMidiPort        = iMidiPort;
170                this->midiChannel      = MidiChannel;
171            }
172    
173            // connect new device port
174            if (pNewMidiInputPort && pEngineChannel) pNewMidiInputPort->Connect(pEngineChannel, MidiChannel);
175            // Ooops.
176            if (pNewMidiInputPort == NULL)
177                throw Exception("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
178      }      }
179    
180      Engine* SamplerChannel::GetEngine() {      EngineChannel* SamplerChannel::GetEngineChannel() {
181          return pEngine;          return pEngineChannel;
182      }      }
183    
184      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {      midi_chan_t SamplerChannel::GetMidiInputChannel() {
185          return pMidiInputDevice;          if (pEngineChannel) this->midiChannel = pEngineChannel->MidiChannel();
186            return this->midiChannel;
187        }
188    
189        int SamplerChannel::GetMidiInputPort() {
190            MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : NULL;
191            if (pMidiInputPort) this->iMidiPort = (int) pMidiInputPort->GetPortNumber();
192            return iMidiPort;
193      }      }
194    
195      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
196          return pAudioOutputDevice;          return pAudioOutputDevice;
197      }      }
198    
199        MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
200            if (pEngineChannel)
201                pMidiInputDevice = (pEngineChannel->GetMidiInputPort()) ? pEngineChannel->GetMidiInputPort()->GetDevice() : NULL;
202            return pMidiInputDevice;
203        }
204    
205      uint SamplerChannel::Index() {      uint SamplerChannel::Index() {
206          if (iIndex >= 0) return iIndex;          if (iIndex >= 0) return iIndex;
207    
208          std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();          Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
209          for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {          for (; iter != pSampler->mSamplerChannels.end(); iter++) {
210              if (*iter == this) {              if (iter->second == this) {
211                  iIndex = i;                  iIndex = iter->first;
212                  return i;                  return iIndex;
213              }              }
214          }          }
215    
216          throw LinuxSamplerException("SamplerChannel index not found");          throw Exception("Internal error: SamplerChannel index not found");
217        }
218    
219        void SamplerChannel::AddEngineChangeListener(EngineChangeListener* l) {
220            llEngineChangeListeners.AddListener(l);
221        }
222    
223        void SamplerChannel::RemoveEngineChangeListener(EngineChangeListener* l) {
224           llEngineChangeListeners.RemoveListener(l);
225        }
226    
227        void SamplerChannel::RemoveAllEngineChangeListeners() {
228           llEngineChangeListeners.RemoveAllListeners();
229        }
230    
231        void SamplerChannel::fireEngineToBeChanged() {
232            for (int i = 0; i < llEngineChangeListeners.GetListenerCount(); i++) {
233                llEngineChangeListeners.GetListener(i)->EngineToBeChanged(Index());
234            }
235        }
236    
237        void SamplerChannel::fireEngineChanged() {
238            for (int i = 0; i < llEngineChangeListeners.GetListenerCount(); i++) {
239                llEngineChangeListeners.GetListener(i)->EngineChanged(Index());
240            }
241      }      }
242    
243        MidiInputPort* SamplerChannel::__GetMidiInputDevicePort(int iMidiPort) {
244            MidiInputPort* pMidiInputPort = NULL;
245            MidiInputDevice* pMidiInputDevice = GetMidiInputDevice();
246            if (pMidiInputDevice)
247                pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
248            return pMidiInputPort;
249        }
250    
251    
252    
253      // ******************************************************************      // ******************************************************************
254      // * Sampler      // * Sampler
255    
256      Sampler::Sampler() {      Sampler::Sampler() {
257            eventHandler.SetSampler(this);
258      }      }
259    
260      Sampler::~Sampler() {      Sampler::~Sampler() {
261          // delete sampler channels          Reset();
262          {      }
263              std::vector<SamplerChannel*>::iterator iter = vSamplerChannels.begin();  
264              for (; iter != vSamplerChannels.end(); iter++) delete *iter;      uint Sampler::SamplerChannels() {
265            return mSamplerChannels.size();
266        }
267    
268        void Sampler::AddChannelCountListener(ChannelCountListener* l) {
269            llChannelCountListeners.AddListener(l);
270        }
271    
272        void Sampler::RemoveChannelCountListener(ChannelCountListener* l) {
273           llChannelCountListeners.RemoveListener(l);
274        }
275    
276        void Sampler::fireChannelCountChanged(int NewCount) {
277            for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
278                llChannelCountListeners.GetListener(i)->ChannelCountChanged(NewCount);
279          }          }
280        }
281    
282          // delete midi input devices      void Sampler::fireChannelAdded(SamplerChannel* pChannel) {
283          {          for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
284              MidiInputDeviceMap::iterator iter = MidiInputDevices.begin();              llChannelCountListeners.GetListener(i)->ChannelAdded(pChannel);
             for (; iter != MidiInputDevices.end(); iter++) {  
                 MidiInputDevice* pDevice = iter->second;  
                 pDevice->StopListen();  
                 delete pDevice;  
             }  
285          }          }
286        }
287    
288          // delete audio output devices      void Sampler::fireChannelToBeRemoved(SamplerChannel* pChannel) {
289          {          for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
290              AudioOutputDeviceMap::iterator iter = AudioOutputDevices.begin();              llChannelCountListeners.GetListener(i)->ChannelToBeRemoved(pChannel);
             for (; iter != AudioOutputDevices.end(); iter++) {  
                 AudioOutputDevice* pDevice = iter->second;  
                 pDevice->Stop();  
                 delete pDevice;  
             }  
291          }          }
292      }      }
293    
294      uint Sampler::SamplerChannels() {      void Sampler::AddAudioDeviceCountListener(AudioDeviceCountListener* l) {
295          return vSamplerChannels.size();          llAudioDeviceCountListeners.AddListener(l);
296        }
297    
298        void Sampler::RemoveAudioDeviceCountListener(AudioDeviceCountListener* l) {
299            llAudioDeviceCountListeners.RemoveListener(l);
300        }
301    
302        void Sampler::fireAudioDeviceCountChanged(int NewCount) {
303            for (int i = 0; i < llAudioDeviceCountListeners.GetListenerCount(); i++) {
304                llAudioDeviceCountListeners.GetListener(i)->AudioDeviceCountChanged(NewCount);
305            }
306        }
307    
308        void Sampler::AddMidiDeviceCountListener(MidiDeviceCountListener* l) {
309            llMidiDeviceCountListeners.AddListener(l);
310        }
311    
312        void Sampler::RemoveMidiDeviceCountListener(MidiDeviceCountListener* l) {
313            llMidiDeviceCountListeners.RemoveListener(l);
314        }
315    
316        void Sampler::fireMidiDeviceCountChanged(int NewCount) {
317            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
318                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceCountChanged(NewCount);
319            }
320        }
321    
322        void Sampler::fireMidiDeviceToBeDestroyed(MidiInputDevice* pDevice) {
323            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
324                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceToBeDestroyed(pDevice);
325            }
326        }
327    
328        void Sampler::fireMidiDeviceCreated(MidiInputDevice* pDevice) {
329            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
330                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceCreated(pDevice);
331            }
332        }
333    
334        void Sampler::AddVoiceCountListener(VoiceCountListener* l) {
335            llVoiceCountListeners.AddListener(l);
336        }
337    
338        void Sampler::RemoveVoiceCountListener(VoiceCountListener* l) {
339            llVoiceCountListeners.RemoveListener(l);
340        }
341    
342        void Sampler::fireVoiceCountChanged(int ChannelId, int NewCount) {
343            for (int i = 0; i < llVoiceCountListeners.GetListenerCount(); i++) {
344                llVoiceCountListeners.GetListener(i)->VoiceCountChanged(ChannelId, NewCount);
345            }
346        }
347    
348        void Sampler::AddStreamCountListener(StreamCountListener* l) {
349            llStreamCountListeners.AddListener(l);
350        }
351    
352        void Sampler::RemoveStreamCountListener(StreamCountListener* l) {
353            llStreamCountListeners.RemoveListener(l);
354        }
355    
356        void Sampler::fireStreamCountChanged(int ChannelId, int NewCount) {
357            for (int i = 0; i < llStreamCountListeners.GetListenerCount(); i++) {
358                llStreamCountListeners.GetListener(i)->StreamCountChanged(ChannelId, NewCount);
359            }
360        }
361    
362        void Sampler::AddBufferFillListener(BufferFillListener* l) {
363            llBufferFillListeners.AddListener(l);
364        }
365    
366        void Sampler::RemoveBufferFillListener(BufferFillListener* l) {
367            llBufferFillListeners.RemoveListener(l);
368        }
369    
370        void Sampler::fireBufferFillChanged(int ChannelId, String FillData) {
371            for (int i = 0; i < llBufferFillListeners.GetListenerCount(); i++) {
372                llBufferFillListeners.GetListener(i)->BufferFillChanged(ChannelId, FillData);
373            }
374        }
375    
376        void Sampler::AddTotalStreamCountListener(TotalStreamCountListener* l) {
377            llTotalStreamCountListeners.AddListener(l);
378        }
379    
380        void Sampler::RemoveTotalStreamCountListener(TotalStreamCountListener* l) {
381            llTotalStreamCountListeners.RemoveListener(l);
382        }
383    
384        void Sampler::fireTotalStreamCountChanged(int NewCount) {
385            for (int i = 0; i < llTotalStreamCountListeners.GetListenerCount(); i++) {
386                llTotalStreamCountListeners.GetListener(i)->TotalStreamCountChanged(NewCount);
387            }
388        }
389    
390        void Sampler::AddTotalVoiceCountListener(TotalVoiceCountListener* l) {
391            llTotalVoiceCountListeners.AddListener(l);
392        }
393    
394        void Sampler::RemoveTotalVoiceCountListener(TotalVoiceCountListener* l) {
395            llTotalVoiceCountListeners.RemoveListener(l);
396        }
397    
398        void Sampler::fireTotalVoiceCountChanged(int NewCount) {
399            for (int i = 0; i < llTotalVoiceCountListeners.GetListenerCount(); i++) {
400                llTotalVoiceCountListeners.GetListener(i)->TotalVoiceCountChanged(NewCount);
401            }
402        }
403    
404        void Sampler::AddFxSendCountListener(FxSendCountListener* l) {
405            llFxSendCountListeners.AddListener(l);
406        }
407    
408        void Sampler::RemoveFxSendCountListener(FxSendCountListener* l) {
409            llFxSendCountListeners.RemoveListener(l);
410        }
411    
412        void Sampler::fireFxSendCountChanged(int ChannelId, int NewCount) {
413            for (int i = 0; i < llFxSendCountListeners.GetListenerCount(); i++) {
414                llFxSendCountListeners.GetListener(i)->FxSendCountChanged(ChannelId, NewCount);
415            }
416        }
417    
418        void Sampler::EventHandler::EngineToBeChanged(int ChannelId) {
419            // nothing to do here
420        }
421    
422        void Sampler::EventHandler::EngineChanged(int ChannelId) {
423            EngineChannel* engineChannel = pSampler->GetSamplerChannel(ChannelId)->GetEngineChannel();
424            if(engineChannel == NULL) return;
425            engineChannel->AddFxSendCountListener(this);
426      }      }
427    
428        void Sampler::EventHandler::FxSendCountChanged(int ChannelId, int NewCount) {
429            pSampler->fireFxSendCountChanged(ChannelId, NewCount);
430        }
431    
432    
433      SamplerChannel* Sampler::AddSamplerChannel() {      SamplerChannel* Sampler::AddSamplerChannel() {
434            // if there's no sampler channel yet
435            if (!mSamplerChannels.size()) {
436                SamplerChannel* pChannel = new SamplerChannel(this);
437                mSamplerChannels[0] = pChannel;
438                fireChannelAdded(pChannel);
439                fireChannelCountChanged(1);
440                pChannel->AddEngineChangeListener(&eventHandler);
441                return pChannel;
442            }
443    
444            // get the highest used sampler channel index
445            uint lastIndex = (--(mSamplerChannels.end()))->first;
446    
447            // check if we reached the index limit
448            if (lastIndex + 1 < lastIndex) {
449                // search for an unoccupied sampler channel index starting from 0
450                for (uint i = 0; i < lastIndex; i++) {
451                    if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
452                    // we found an unused index, so insert the new channel there
453                    SamplerChannel* pChannel = new SamplerChannel(this);
454                    mSamplerChannels[i] = pChannel;
455                    fireChannelAdded(pChannel);
456                    fireChannelCountChanged(SamplerChannels());
457                    pChannel->AddEngineChangeListener(&eventHandler);
458                    return pChannel;
459                }
460                throw Exception("Internal error: could not find unoccupied sampler channel index.");
461            }
462    
463            // we have not reached the index limit so we just add the channel past the highest index
464          SamplerChannel* pChannel = new SamplerChannel(this);          SamplerChannel* pChannel = new SamplerChannel(this);
465          vSamplerChannels.push_back(pChannel);          mSamplerChannels[lastIndex + 1] = pChannel;
466            fireChannelAdded(pChannel);
467            fireChannelCountChanged(SamplerChannels());
468            pChannel->AddEngineChangeListener(&eventHandler);
469          return pChannel;          return pChannel;
470      }      }
471    
472      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
473          if (uiSamplerChannel >= SamplerChannels()) return NULL;          return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
474          return vSamplerChannels[uiSamplerChannel];      }
475    
476        std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
477            return mSamplerChannels;
478      }      }
479    
480      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
481          std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
482          for (; iterChan != vSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
483              if (*iterChan == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
484                  vSamplerChannels.erase(iterChan);                  fireChannelToBeRemoved(pSamplerChannel);
485                    pSamplerChannel->RemoveAllEngineChangeListeners();
486                    mSamplerChannels.erase(iterChan);
487                  delete pSamplerChannel;                  delete pSamplerChannel;
488                    fireChannelCountChanged(SamplerChannels());
489                  return;                  return;
490              }              }
491          }          }
# Line 194  namespace LinuxSampler { Line 497  namespace LinuxSampler {
497          RemoveSamplerChannel(pChannel);          RemoveSamplerChannel(pChannel);
498      }      }
499    
500      AudioOutputDevice* Sampler::CreateAudioOutputDevice(AudioOutputDevice::type_t AudioType) {      std::vector<String> Sampler::AvailableAudioOutputDrivers() {
501          // check if device already created          return AudioOutputDeviceFactory::AvailableDrivers();
502          AudioOutputDevice* pDevice = GetAudioOutputDevice(AudioType);      }
503          if (pDevice) return pDevice;  
504        std::vector<String> Sampler::AvailableMidiInputDrivers() {
505            return MidiInputDeviceFactory::AvailableDrivers();
506        }
507    
508        std::vector<String> Sampler::AvailableEngineTypes() {
509            return EngineFactory::AvailableEngineTypes();
510        }
511    
512        AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (Exception) {
513          // create new device          // create new device
514          switch (AudioType) {          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
515              case AudioOutputDevice::type_alsa:  
516                  pDevice = new AudioOutputDeviceAlsa;          // add new audio device to the audio device list
517                  break;          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
518  #if HAVE_JACK              if (!mAudioOutputDevices[i]) {
519              case AudioOutputDevice::type_jack:                  mAudioOutputDevices[i] = pDevice;
                 pDevice = new AudioOutputDeviceJack;  
520                  break;                  break;
521  #endif              }
             default:  
                 throw LinuxSamplerException("Unknown audio output device type");  
522          }          }
523    
524          // activate device          fireAudioDeviceCountChanged(AudioOutputDevices());
525          pDevice->Play();          return pDevice;
526        }
527    
528          // add new audio device to the audio device list      uint Sampler::AudioOutputDevices() {
529          AudioOutputDevices[AudioType] = pDevice;          return mAudioOutputDevices.size();
530        }
531    
532          return pDevice;      uint Sampler::MidiInputDevices() {
533            return mMidiInputDevices.size();
534        }
535    
536        std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
537            return mAudioOutputDevices;
538      }      }
539    
540      AudioOutputDevice* Sampler::GetAudioOutputDevice(AudioOutputDevice::type_t AudioType) {      std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
541          AudioOutputDeviceMap::iterator iter = AudioOutputDevices.find(AudioType);          return mMidiInputDevices;
         return (iter != AudioOutputDevices.end()) ? iter->second : NULL;  
542      }      }
543    
544      MidiInputDevice* Sampler::CreateMidiInputDevice(MidiInputDevice::type_t MidiType) {      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
545          // check if device already created          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
546          MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);          for (; iter != mAudioOutputDevices.end(); iter++) {
547          if (pDevice) return pDevice;              if (iter->second == pDevice) {
548                    // check if there are still sampler engines connected to this device
549                    for (uint i = 0; i < SamplerChannels(); i++)
550                        if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw Exception("Sampler channel " + ToString(i) + " is still connected to the audio output device.");
551    
552          // create new device                  // disable device
553          switch (MidiType) {                  pDevice->Stop();
554              case MidiInputDevice::type_alsa:  
555                  pDevice = new MidiInputDeviceAlsa;                  // remove device from the device list
556                    mAudioOutputDevices.erase(iter);
557    
558                    // destroy and free device from memory
559                    delete pDevice;
560    
561                    fireAudioDeviceCountChanged(AudioOutputDevices());
562                    break;
563                }
564            }
565        }
566    
567        void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
568            MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
569            for (; iter != mMidiInputDevices.end(); iter++) {
570                if (iter->second == pDevice) {
571                    // check if there are still sampler engines connected to this device
572                    for (uint i = 0; i < SamplerChannels(); i++)
573                        if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw Exception("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
574    
575                    fireMidiDeviceToBeDestroyed(pDevice);
576    
577                    // disable device
578                    pDevice->StopListen();
579    
580                    // remove device from the device list
581                    mMidiInputDevices.erase(iter);
582    
583                    // destroy and free device from memory
584                    delete pDevice;
585    
586                    fireMidiDeviceCountChanged(MidiInputDevices());
587                  break;                  break;
588              default:              }
                 throw LinuxSamplerException("Unknown audio output device type");  
589          }          }
590        }
591    
592          // activate device      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception) {
593          pDevice->Listen();          // create new device
594            MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
595    
596          // add new MIDI device to the MIDI device list          // add new device to the midi device list
597          MidiInputDevices[MidiType] = pDevice;          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
598                    if (!mMidiInputDevices[i]) {
599                            mMidiInputDevices[i] = pDevice;
600                            break;
601                    }
602            }
603    
604            fireMidiDeviceCreated(pDevice);
605            fireMidiDeviceCountChanged(MidiInputDevices());
606          return pDevice;          return pDevice;
607      }      }
608    
609      MidiInputDevice* Sampler::GetMidiInputDevice(MidiInputDevice::type_t MidiType) {      int Sampler::GetDiskStreamCount() {
610          MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);          int count = 0;
611          return (iter != MidiInputDevices.end()) ? iter->second : NULL;          std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
612    
613            for(; it != EngineFactory::EngineInstances().end(); it++) {
614                count += (*it)->DiskStreamCount();
615            }
616    
617            return count;
618        }
619    
620        int Sampler::GetVoiceCount() {
621            int count = 0;
622            std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
623    
624            for(; it != EngineFactory::EngineInstances().end(); it++) {
625                count += (*it)->VoiceCount();
626            }
627    
628            return count;
629        }
630    
631        void Sampler::Reset() {
632            // delete sampler channels
633            try {
634                while (true) {
635                        SamplerChannelMap::iterator iter = mSamplerChannels.begin();
636                        if (iter == mSamplerChannels.end()) break;
637                        RemoveSamplerChannel(iter->second);
638                }
639            }
640            catch(...) {
641                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
642                exit(EXIT_FAILURE);
643            }
644    
645            // delete midi input devices
646            try {
647                while (true) {
648                        MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
649                        if (iter == mMidiInputDevices.end()) break;
650                        DestroyMidiInputDevice(iter->second);
651                }
652            }
653            catch(...) {
654                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
655                exit(EXIT_FAILURE);
656            }
657    
658            // delete audio output devices
659            try {
660                while (true) {
661                        AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
662                        if (iter == mAudioOutputDevices.end()) break;
663                        DestroyAudioOutputDevice(iter->second);
664                }
665            }
666            catch(...) {
667                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
668                exit(EXIT_FAILURE);
669            }
670    
671            // delete MIDI instrument maps
672            try {
673                MidiInstrumentMapper::RemoveAllMaps();
674            }
675            catch(...) {
676                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI instrument maps, exiting.\n" << std::flush;
677                exit(EXIT_FAILURE);
678            }
679    
680            // unload all instrument editor DLLs
681            InstrumentEditorFactory::ClosePlugins();
682        }
683    
684        bool Sampler::EnableDenormalsAreZeroMode() {
685            Features::detect();
686            return Features::enableDenormalsAreZeroMode();
687      }      }
688    
689  } // namespace LinuxSampler  } // namespace LinuxSampler
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