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

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revision 53 by schoenebeck, Mon Apr 26 17:15:51 2004 UTC revision 1424 by schoenebeck, Sun Oct 14 22:00:17 2007 UTC
# Line 2  Line 2 
2   *                                                                         *   *                                                                         *
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003 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   ***************************************************************************/   ***************************************************************************/
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    
36  namespace LinuxSampler {  namespace LinuxSampler {
37    
# Line 34  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(1,("SamplerChannel: Loading engine\n"));          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          // create new engine channel
80          Engine* pNewEngine = NULL;          EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
81          switch (EngineType) {          if (!pNewEngineChannel) throw Exception("Unknown engine type");
82              case engine_type_gig:  
83                  pNewEngine = new gig::Engine;          //FIXME: hack to allow fast retrieval of engine channel's sampler channel index
84                  break;          pNewEngineChannel->iSamplerChannelIndex = Index();
85              default:  
86                  throw LinuxSamplerException("Unknown engine type");          // 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          // disconnect old engine          // connect new engine channel
103          if (pEngine) {          if (pAudioOutputDevice) {
104              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);              pNewEngineChannel->Connect(pAudioOutputDevice);
105              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
             delete pEngine;  
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();
116          if (pMidiInputDevice) pMidiInputDevice->Connect(pNewEngine, (MidiInputDevice::midi_chan_t) Index());          dmsg(2,("OK\n"));
         if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);  
         dmsg(1,("SamplerChannel: Engine loaded.\n"));  
117      }      }
118    
119      void SamplerChannel::SetAudioOutputDevice(audio_output_type_t AudioType) {      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
120          // get / create desired audio device          if(pAudioOutputDevice == pDevice) return;
         AudioOutputDevice* pDevice = pSampler->GetAudioOutputDevice(AudioType);  
         if (!pDevice) pDevice = pSampler->CreateAudioOutputDevice(AudioType);  
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(midi_input_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 = AudioOutputDevices.begin();      }
290              for (; iter != AudioOutputDevices.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          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::AddTotalVoiceCountListener(TotalVoiceCountListener* l) {
344            llTotalVoiceCountListeners.AddListener(l);
345        }
346    
347        void Sampler::RemoveTotalVoiceCountListener(TotalVoiceCountListener* l) {
348            llTotalVoiceCountListeners.RemoveListener(l);
349        }
350    
351        void Sampler::fireTotalVoiceCountChanged(int NewCount) {
352            for (int i = 0; i < llTotalVoiceCountListeners.GetListenerCount(); i++) {
353                llTotalVoiceCountListeners.GetListener(i)->TotalVoiceCountChanged(NewCount);
354            }
355        }
356    
357        void Sampler::AddFxSendCountListener(FxSendCountListener* l) {
358            llFxSendCountListeners.AddListener(l);
359        }
360    
361        void Sampler::RemoveFxSendCountListener(FxSendCountListener* l) {
362            llFxSendCountListeners.RemoveListener(l);
363        }
364    
365        void Sampler::fireFxSendCountChanged(int ChannelId, int NewCount) {
366            for (int i = 0; i < llFxSendCountListeners.GetListenerCount(); i++) {
367                llFxSendCountListeners.GetListener(i)->FxSendCountChanged(ChannelId, NewCount);
368            }
369        }
370    
371        void Sampler::EventHandler::EngineChanged(int ChannelId) {
372            EngineChannel* engineChannel = pSampler->GetSamplerChannel(ChannelId)->GetEngineChannel();
373            if(engineChannel == NULL) return;
374            engineChannel->AddFxSendCountListener(this);
375        }
376    
377        void Sampler::EventHandler::FxSendCountChanged(int ChannelId, int NewCount) {
378            pSampler->fireFxSendCountChanged(ChannelId, NewCount);
379        }
380    
381    
382      SamplerChannel* Sampler::AddSamplerChannel() {      SamplerChannel* Sampler::AddSamplerChannel() {
383            // if there's no sampler channel yet
384            if (!mSamplerChannels.size()) {
385                SamplerChannel* pChannel = new SamplerChannel(this);
386                mSamplerChannels[0] = pChannel;
387                fireChannelCountChanged(1);
388                pChannel->AddEngineChangeListener(&eventHandler);
389                return pChannel;
390            }
391    
392            // get the highest used sampler channel index
393            uint lastIndex = (--(mSamplerChannels.end()))->first;
394    
395            // check if we reached the index limit
396            if (lastIndex + 1 < lastIndex) {
397                // search for an unoccupied sampler channel index starting from 0
398                for (uint i = 0; i < lastIndex; i++) {
399                    if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
400                    // we found an unused index, so insert the new channel there
401                    SamplerChannel* pChannel = new SamplerChannel(this);
402                    mSamplerChannels[i] = pChannel;
403                    fireChannelCountChanged(SamplerChannels());
404                    pChannel->AddEngineChangeListener(&eventHandler);
405                    return pChannel;
406                }
407                throw Exception("Internal error: could not find unoccupied sampler channel index.");
408            }
409    
410            // we have not reached the index limit so we just add the channel past the highest index
411          SamplerChannel* pChannel = new SamplerChannel(this);          SamplerChannel* pChannel = new SamplerChannel(this);
412          vSamplerChannels.push_back(pChannel);          mSamplerChannels[lastIndex + 1] = pChannel;
413            fireChannelCountChanged(SamplerChannels());
414            pChannel->AddEngineChangeListener(&eventHandler);
415          return pChannel;          return pChannel;
416      }      }
417    
418      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
419          if (uiSamplerChannel >= SamplerChannels()) return NULL;          return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
420          return vSamplerChannels[uiSamplerChannel];      }
421    
422        std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
423            return mSamplerChannels;
424      }      }
425    
426      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
427          std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
428          for (; iterChan != vSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
429              if (*iterChan == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
430                  vSamplerChannels.erase(iterChan);                  pSamplerChannel->RemoveAllEngineChangeListeners();
431                    mSamplerChannels.erase(iterChan);
432                  delete pSamplerChannel;                  delete pSamplerChannel;
433                    fireChannelCountChanged(SamplerChannels());
434                  return;                  return;
435              }              }
436          }          }
# Line 194  namespace LinuxSampler { Line 442  namespace LinuxSampler {
442          RemoveSamplerChannel(pChannel);          RemoveSamplerChannel(pChannel);
443      }      }
444    
445      AudioOutputDevice* Sampler::CreateAudioOutputDevice(audio_output_type_t AudioType) {      std::vector<String> Sampler::AvailableAudioOutputDrivers() {
446          // check if device already created          return AudioOutputDeviceFactory::AvailableDrivers();
447          AudioOutputDevice* pDevice = GetAudioOutputDevice(AudioType);      }
448          if (pDevice) return pDevice;  
449        std::vector<String> Sampler::AvailableMidiInputDrivers() {
450            return MidiInputDeviceFactory::AvailableDrivers();
451        }
452    
453        std::vector<String> Sampler::AvailableEngineTypes() {
454            return EngineFactory::AvailableEngineTypes();
455        }
456    
457        AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (Exception) {
458          // create new device          // create new device
459          switch (AudioType) {          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
460              case audio_output_type_alsa:  
461                  pDevice = new AudioOutputDeviceAlsa;          // add new audio device to the audio device list
462                  break;          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
463              case audio_output_type_jack:              if (!mAudioOutputDevices[i]) {
464                  pDevice = new AudioOutputDeviceJack;                  mAudioOutputDevices[i] = pDevice;
465                  break;                  break;
466              default:              }
                 throw LinuxSamplerException("Unknown audio output device type");  
467          }          }
468    
469          // activate device          fireAudioDeviceCountChanged(AudioOutputDevices());
         pDevice->Play();  
   
470          return pDevice;          return pDevice;
471      }      }
472    
473      AudioOutputDevice* Sampler::GetAudioOutputDevice(audio_output_type_t AudioType) {      uint Sampler::AudioOutputDevices() {
474          AudioOutputDeviceMap::iterator iter = AudioOutputDevices.find(AudioType);          return mAudioOutputDevices.size();
         return (iter != AudioOutputDevices.end()) ? iter->second : NULL;  
475      }      }
476    
477      MidiInputDevice* Sampler::CreateMidiInputDevice(midi_input_type_t MidiType) {      uint Sampler::MidiInputDevices() {
478          // check if device already created          return mMidiInputDevices.size();
479          MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);      }
         if (pDevice) return pDevice;  
480    
481          // create new device      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
482          switch (MidiType) {          return mAudioOutputDevices;
483              case midi_input_type_alsa:      }
484                  pDevice = new MidiInputDeviceAlsa;  
485        std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
486            return mMidiInputDevices;
487        }
488    
489        void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
490            AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
491            for (; iter != mAudioOutputDevices.end(); iter++) {
492                if (iter->second == pDevice) {
493                    // check if there are still sampler engines connected to this device
494                    for (uint i = 0; i < SamplerChannels(); i++)
495                        if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw Exception("Sampler channel " + ToString(i) + " is still connected to the audio output device.");
496    
497                    // disable device
498                    pDevice->Stop();
499    
500                    // remove device from the device list
501                    mAudioOutputDevices.erase(iter);
502    
503                    // destroy and free device from memory
504                    delete pDevice;
505    
506                    fireAudioDeviceCountChanged(AudioOutputDevices());
507                    break;
508                }
509            }
510        }
511    
512        void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
513            MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
514            for (; iter != mMidiInputDevices.end(); iter++) {
515                if (iter->second == pDevice) {
516                    // check if there are still sampler engines connected to this device
517                    for (uint i = 0; i < SamplerChannels(); i++)
518                        if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw Exception("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
519    
520                    // disable device
521                    pDevice->StopListen();
522    
523                    // remove device from the device list
524                    mMidiInputDevices.erase(iter);
525    
526                    // destroy and free device from memory
527                    delete pDevice;
528    
529                    fireMidiDeviceCountChanged(MidiInputDevices());
530                  break;                  break;
531              default:              }
                 throw LinuxSamplerException("Unknown audio output device type");  
532          }          }
533        }
534    
535        MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception) {
536            // create new device
537            MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
538    
539          // activate device          // add new device to the midi device list
540          pDevice->Listen();          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
541                    if (!mMidiInputDevices[i]) {
542                            mMidiInputDevices[i] = pDevice;
543                            break;
544                    }
545            }
546    
547            fireMidiDeviceCountChanged(MidiInputDevices());
548          return pDevice;          return pDevice;
549      }      }
550    
551      MidiInputDevice* Sampler::GetMidiInputDevice(midi_input_type_t MidiType) {      int Sampler::GetVoiceCount() {
552          MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);          int count = 0;
553          return (iter != MidiInputDevices.end()) ? iter->second : NULL;          std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
554    
555            for(; it != EngineFactory::EngineInstances().end(); it++) {
556                count += (*it)->VoiceCount();
557            }
558    
559            return count;
560        }
561    
562        void Sampler::Reset() {
563            // delete sampler channels
564            try {
565                while (true) {
566                        SamplerChannelMap::iterator iter = mSamplerChannels.begin();
567                        if (iter == mSamplerChannels.end()) break;
568                        RemoveSamplerChannel(iter->second);
569                }
570            }
571            catch(...) {
572                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
573                exit(EXIT_FAILURE);
574            }
575    
576            // delete midi input devices
577            try {
578                while (true) {
579                        MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
580                        if (iter == mMidiInputDevices.end()) break;
581                        DestroyMidiInputDevice(iter->second);
582                }
583            }
584            catch(...) {
585                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
586                exit(EXIT_FAILURE);
587            }
588    
589            // delete audio output devices
590            try {
591                while (true) {
592                        AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
593                        if (iter == mAudioOutputDevices.end()) break;
594                        DestroyAudioOutputDevice(iter->second);
595                }
596            }
597            catch(...) {
598                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
599                exit(EXIT_FAILURE);
600            }
601    
602            // delete MIDI instrument maps
603            try {
604                MidiInstrumentMapper::RemoveAllMaps();
605            }
606            catch(...) {
607                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI instrument maps, exiting.\n" << std::flush;
608                exit(EXIT_FAILURE);
609            }
610    
611            // unload all instrument editor DLLs
612            InstrumentEditorFactory::ClosePlugins();
613      }      }
614    
615  } // namespace LinuxSampler  } // namespace LinuxSampler
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