/[svn]/linuxsampler/trunk/src/Sampler.cpp
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revision 123 by schoenebeck, Mon Jun 14 19:33:16 2004 UTC revision 1130 by iliev, Sun Mar 25 18:59:14 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 "engines/EngineFactory.h"
29  #include "mididriver/MidiInputDeviceAlsa.h"  #include "engines/EngineChannelFactory.h"
30  #include "engines/gig/Engine.h"  #include "drivers/audio/AudioOutputDeviceFactory.h"
31    #include "drivers/midi/MidiInputDeviceFactory.h"
32    #include "drivers/midi/MidiInstrumentMapper.h"
33    
34  namespace LinuxSampler {  namespace LinuxSampler {
35    
# Line 35  namespace LinuxSampler { Line 38  namespace LinuxSampler {
38    
39      SamplerChannel::SamplerChannel(Sampler* pS) {      SamplerChannel::SamplerChannel(Sampler* pS) {
40          pSampler           = pS;          pSampler           = pS;
41          pEngine            = NULL;          pEngineChannel     = NULL;
         pMidiInputDevice   = NULL;  
42          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
43            pMidiInputDevice   = NULL;
44            iMidiPort          = 0;
45            midiChannel        = midi_chan_all;
46          iIndex             = -1;          iIndex             = -1;
47      }      }
48    
49      SamplerChannel::~SamplerChannel() {      SamplerChannel::~SamplerChannel() {
50          if (pEngine) {          if (pEngineChannel) {
51              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);              Engine* engine = pEngineChannel->GetEngine();
52              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
53              delete pEngine;  
54                MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : __GetMidiInputDevicePort(GetMidiInputChannel());
55                if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
56                if (pEngineChannel) {
57                    if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
58                    EngineChannelFactory::Destroy(pEngineChannel);
59    
60                    // reconnect engine if it still exists
61                    const std::set<Engine*>& engines = EngineFactory::EngineInstances();
62                    if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
63                }
64          }          }
65      }      }
66    
67      void SamplerChannel::LoadEngine(Engine::type_t EngineType) {      void SamplerChannel::SetEngineType(String EngineType) throw (Exception) {
68          dmsg(2,("SamplerChannel: Loading engine..."));          dmsg(2,("SamplerChannel: Assigning engine type..."));
   
         // create new engine  
         Engine* pNewEngine = NULL;  
         switch (EngineType) {  
             case Engine::type_gig:  
                 pNewEngine = new gig::Engine;  
                 break;  
             default:  
                 throw LinuxSamplerException("Unknown engine type");  
         }  
69    
70          // disconnect old engine          // create new engine channel
71          if (pEngine) {          EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
72              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);          if (!pNewEngineChannel) throw Exception("Unknown engine type");
73              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);  
74              delete pEngine;          //FIXME: hack to allow fast retrieval of engine channel's sampler channel index
75          }          pNewEngineChannel->iSamplerChannelIndex = Index();
76    
77            // dereference midi input port.
78            MidiInputPort* pMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
79            // disconnect old engine channel
80            if (pEngineChannel) {
81                Engine* engine = pEngineChannel->GetEngine();
82                if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
83    
84                if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
85                if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
86                EngineChannelFactory::Destroy(pEngineChannel);
87    
88                // reconnect engine if it still exists
89                const std::set<Engine*>& engines = EngineFactory::EngineInstances();
90                if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
91            }
92    
93            // connect new engine channel
94            if (pAudioOutputDevice) {
95                pNewEngineChannel->Connect(pAudioOutputDevice);
96                pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
97            }
98            if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, GetMidiInputChannel());
99            pEngineChannel = pNewEngineChannel;
100    
101            // from now on get MIDI device and port from EngineChannel object
102            this->pMidiInputDevice = NULL;
103            this->iMidiPort        = 0;
104    
105          // connect new engine          pEngineChannel->StatusChanged(true);
106          pEngine = pNewEngine;          fireEngineChanged();
         if (pMidiInputDevice) pMidiInputDevice->Connect(pNewEngine, (MidiInputDevice::midi_chan_t) Index());  
         if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);  
107          dmsg(2,("OK\n"));          dmsg(2,("OK\n"));
108      }      }
109    
110      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
111            if(pAudioOutputDevice == pDevice) return;
112    
113          // disconnect old device          // disconnect old device
114          if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);          if (pAudioOutputDevice && pEngineChannel) {
115                Engine* engine = pEngineChannel->GetEngine();
116                pAudioOutputDevice->Disconnect(engine);
117    
118                pEngineChannel->DisconnectAudioOutputDevice();
119    
120                // reconnect engine if it still exists
121                const std::set<Engine*>& engines = EngineFactory::EngineInstances();
122                if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
123            }
124    
125          // connect new device          // connect new device
126          pAudioOutputDevice = pDevice;          pAudioOutputDevice = pDevice;
127          if (pEngine) pAudioOutputDevice->Connect(pEngine);          if (pEngineChannel) {
128                pEngineChannel->Connect(pAudioOutputDevice);
129                pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
130            }
131      }      }
132    
133      void SamplerChannel::SetMidiInputDevice(MidiInputDevice::type_t MidiType, MidiInputDevice::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
134          // get / create desired midi device         SetMidiInput(pDevice, 0, GetMidiInputChannel());
135          MidiInputDevice* pDevice = pSampler->GetMidiInputDevice(MidiType);      }
         if (!pDevice) pDevice = pSampler->CreateMidiInputDevice(MidiType);  
136    
137          // disconnect old device      void SamplerChannel::SetMidiInputPort(int MidiPort) {
138          if (pMidiInputDevice && pEngine) pMidiInputDevice->Disconnect(pEngine);         SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());
139        }
140    
141          // connect new device      void SamplerChannel::SetMidiInputChannel(midi_chan_t MidiChannel) {
142          pMidiInputDevice = pDevice;         SetMidiInput(GetMidiInputDevice(), GetMidiInputPort(), MidiChannel);
         if (pEngine) pMidiInputDevice->Connect(pEngine, MidiChannel);  
143      }      }
144    
145      Engine* SamplerChannel::GetEngine() {      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) {
146          return pEngine;          if (!pDevice) throw Exception("No MIDI input device assigned.");
147    
148            // get old and new midi input port
149            MidiInputPort* pOldMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
150            MidiInputPort* pNewMidiInputPort = pDevice->GetPort(iMidiPort);
151    
152            // disconnect old device port
153            if (pOldMidiInputPort && pEngineChannel) pOldMidiInputPort->Disconnect(pEngineChannel);
154            // remember new device, port and channel if not engine channel yet created
155            if (!pEngineChannel) {
156                this->pMidiInputDevice = pDevice;
157                this->iMidiPort        = iMidiPort;
158                this->midiChannel      = MidiChannel;
159            }
160    
161            // connect new device port
162            if (pNewMidiInputPort && pEngineChannel) pNewMidiInputPort->Connect(pEngineChannel, MidiChannel);
163            // Ooops.
164            if (pNewMidiInputPort == NULL)
165                throw Exception("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
166      }      }
167    
168      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {      EngineChannel* SamplerChannel::GetEngineChannel() {
169          return pMidiInputDevice;          return pEngineChannel;
170        }
171    
172        midi_chan_t SamplerChannel::GetMidiInputChannel() {
173            if (pEngineChannel) this->midiChannel = pEngineChannel->MidiChannel();
174            return this->midiChannel;
175        }
176    
177        int SamplerChannel::GetMidiInputPort() {
178            MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : NULL;
179            if (pMidiInputPort) this->iMidiPort = (int) pMidiInputPort->GetPortNumber();
180            return iMidiPort;
181      }      }
182    
183      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
184          return pAudioOutputDevice;          return pAudioOutputDevice;
185      }      }
186    
187        MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
188            if (pEngineChannel)
189                pMidiInputDevice = (pEngineChannel->GetMidiInputPort()) ? pEngineChannel->GetMidiInputPort()->GetDevice() : NULL;
190            return pMidiInputDevice;
191        }
192    
193      uint SamplerChannel::Index() {      uint SamplerChannel::Index() {
194          if (iIndex >= 0) return iIndex;          if (iIndex >= 0) return iIndex;
195    
196          std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();          Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
197          for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {          for (; iter != pSampler->mSamplerChannels.end(); iter++) {
198              if (*iter == this) {              if (iter->second == this) {
199                  iIndex = i;                  iIndex = iter->first;
200                  return i;                  return iIndex;
201              }              }
202          }          }
203    
204          throw LinuxSamplerException("SamplerChannel index not found");          throw Exception("Internal error: SamplerChannel index not found");
205        }
206    
207        void SamplerChannel::AddEngineChangeListener(EngineChangeListener* l) {
208            llEngineChangeListeners.AddListener(l);
209        }
210    
211        void SamplerChannel::RemoveEngineChangeListener(EngineChangeListener* l) {
212           llEngineChangeListeners.RemoveListener(l);
213        }
214    
215        void SamplerChannel::RemoveAllEngineChangeListeners() {
216           llEngineChangeListeners.RemoveAllListeners();
217        }
218    
219        void SamplerChannel::fireEngineChanged() {
220            for (int i = 0; i < llEngineChangeListeners.GetListenerCount(); i++) {
221                llEngineChangeListeners.GetListener(i)->EngineChanged(Index());
222            }
223        }
224    
225        MidiInputPort* SamplerChannel::__GetMidiInputDevicePort(int iMidiPort) {
226            MidiInputPort* pMidiInputPort = NULL;
227            MidiInputDevice* pMidiInputDevice = GetMidiInputDevice();
228            if (pMidiInputDevice)
229                pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
230            return pMidiInputPort;
231      }      }
232    
233    
234    
235      // ******************************************************************      // ******************************************************************
236      // * Sampler      // * Sampler
237    
238      Sampler::Sampler() {      Sampler::Sampler() {
239            eventHandler.SetSampler(this);
240      }      }
241    
242      Sampler::~Sampler() {      Sampler::~Sampler() {
243          // delete sampler channels          Reset();
244          {      }
245              std::vector<SamplerChannel*>::iterator iter = vSamplerChannels.begin();  
246              for (; iter != vSamplerChannels.end(); iter++) delete *iter;      uint Sampler::SamplerChannels() {
247            return mSamplerChannels.size();
248        }
249    
250        void Sampler::AddChannelCountListener(ChannelCountListener* l) {
251            llChannelCountListeners.AddListener(l);
252        }
253    
254        void Sampler::RemoveChannelCountListener(ChannelCountListener* l) {
255           llChannelCountListeners.RemoveListener(l);
256        }
257    
258        void Sampler::fireChannelCountChanged(int NewCount) {
259            for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
260                llChannelCountListeners.GetListener(i)->ChannelCountChanged(NewCount);
261          }          }
262        }
263    
264          // delete midi input devices      void Sampler::AddAudioDeviceCountListener(AudioDeviceCountListener* l) {
265          {          llAudioDeviceCountListeners.AddListener(l);
266              MidiInputDeviceMap::iterator iter = MidiInputDevices.begin();      }
267              for (; iter != MidiInputDevices.end(); iter++) {  
268                  MidiInputDevice* pDevice = iter->second;      void Sampler::RemoveAudioDeviceCountListener(AudioDeviceCountListener* l) {
269                  pDevice->StopListen();          llAudioDeviceCountListeners.RemoveListener(l);
270                  delete pDevice;      }
271              }  
272        void Sampler::fireAudioDeviceCountChanged(int NewCount) {
273            for (int i = 0; i < llAudioDeviceCountListeners.GetListenerCount(); i++) {
274                llAudioDeviceCountListeners.GetListener(i)->AudioDeviceCountChanged(NewCount);
275            }
276        }
277    
278        void Sampler::AddMidiDeviceCountListener(MidiDeviceCountListener* l) {
279            llMidiDeviceCountListeners.AddListener(l);
280        }
281    
282        void Sampler::RemoveMidiDeviceCountListener(MidiDeviceCountListener* l) {
283            llMidiDeviceCountListeners.RemoveListener(l);
284        }
285    
286        void Sampler::fireMidiDeviceCountChanged(int NewCount) {
287            for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
288                llMidiDeviceCountListeners.GetListener(i)->MidiDeviceCountChanged(NewCount);
289          }          }
290        }
291    
292          // delete audio output devices      void Sampler::AddVoiceCountListener(VoiceCountListener* l) {
293          {          llVoiceCountListeners.AddListener(l);
294              AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();      }
295              for (; iter != mAudioOutputDevices.end(); iter++) {  
296                  AudioOutputDevice* pDevice = iter->second;      void Sampler::RemoveVoiceCountListener(VoiceCountListener* l) {
297                  pDevice->Stop();          llVoiceCountListeners.RemoveListener(l);
298                  delete pDevice;      }
299              }  
300        void Sampler::fireVoiceCountChanged(int ChannelId, int NewCount) {
301            for (int i = 0; i < llVoiceCountListeners.GetListenerCount(); i++) {
302                llVoiceCountListeners.GetListener(i)->VoiceCountChanged(ChannelId, NewCount);
303          }          }
304      }      }
305    
306      uint Sampler::SamplerChannels() {      void Sampler::AddStreamCountListener(StreamCountListener* l) {
307          return vSamplerChannels.size();          llStreamCountListeners.AddListener(l);
308        }
309    
310        void Sampler::RemoveStreamCountListener(StreamCountListener* l) {
311            llStreamCountListeners.RemoveListener(l);
312      }      }
313    
314        void Sampler::fireStreamCountChanged(int ChannelId, int NewCount) {
315            for (int i = 0; i < llStreamCountListeners.GetListenerCount(); i++) {
316                llStreamCountListeners.GetListener(i)->StreamCountChanged(ChannelId, NewCount);
317            }
318        }
319    
320        void Sampler::AddBufferFillListener(BufferFillListener* l) {
321            llBufferFillListeners.AddListener(l);
322        }
323    
324        void Sampler::RemoveBufferFillListener(BufferFillListener* l) {
325            llBufferFillListeners.RemoveListener(l);
326        }
327    
328        void Sampler::fireBufferFillChanged(int ChannelId, String FillData) {
329            for (int i = 0; i < llBufferFillListeners.GetListenerCount(); i++) {
330                llBufferFillListeners.GetListener(i)->BufferFillChanged(ChannelId, FillData);
331            }
332        }
333    
334        void Sampler::AddTotalVoiceCountListener(TotalVoiceCountListener* l) {
335            llTotalVoiceCountListeners.AddListener(l);
336        }
337    
338        void Sampler::RemoveTotalVoiceCountListener(TotalVoiceCountListener* l) {
339            llTotalVoiceCountListeners.RemoveListener(l);
340        }
341    
342        void Sampler::fireTotalVoiceCountChanged(int NewCount) {
343            for (int i = 0; i < llTotalVoiceCountListeners.GetListenerCount(); i++) {
344                llTotalVoiceCountListeners.GetListener(i)->TotalVoiceCountChanged(NewCount);
345            }
346        }
347    
348        void Sampler::AddFxSendCountListener(FxSendCountListener* l) {
349            llFxSendCountListeners.AddListener(l);
350        }
351    
352        void Sampler::RemoveFxSendCountListener(FxSendCountListener* l) {
353            llFxSendCountListeners.RemoveListener(l);
354        }
355    
356        void Sampler::fireFxSendCountChanged(int ChannelId, int NewCount) {
357            for (int i = 0; i < llFxSendCountListeners.GetListenerCount(); i++) {
358                llFxSendCountListeners.GetListener(i)->FxSendCountChanged(ChannelId, NewCount);
359            }
360        }
361    
362        void Sampler::EventHandler::EngineChanged(int ChannelId) {
363            EngineChannel* engineChannel = pSampler->GetSamplerChannel(ChannelId)->GetEngineChannel();
364            if(engineChannel == NULL) return;
365            engineChannel->AddFxSendCountListener(this);
366        }
367    
368        void Sampler::EventHandler::FxSendCountChanged(int ChannelId, int NewCount) {
369            pSampler->fireFxSendCountChanged(ChannelId, NewCount);
370        }
371    
372    
373      SamplerChannel* Sampler::AddSamplerChannel() {      SamplerChannel* Sampler::AddSamplerChannel() {
374            // if there's no sampler channel yet
375            if (!mSamplerChannels.size()) {
376                SamplerChannel* pChannel = new SamplerChannel(this);
377                mSamplerChannels[0] = pChannel;
378                fireChannelCountChanged(1);
379                pChannel->AddEngineChangeListener(&eventHandler);
380                return pChannel;
381            }
382    
383            // get the highest used sampler channel index
384            uint lastIndex = (--(mSamplerChannels.end()))->first;
385    
386            // check if we reached the index limit
387            if (lastIndex + 1 < lastIndex) {
388                // search for an unoccupied sampler channel index starting from 0
389                for (uint i = 0; i < lastIndex; i++) {
390                    if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
391                    // we found an unused index, so insert the new channel there
392                    SamplerChannel* pChannel = new SamplerChannel(this);
393                    mSamplerChannels[i] = pChannel;
394                    fireChannelCountChanged(SamplerChannels());
395                    pChannel->AddEngineChangeListener(&eventHandler);
396                    return pChannel;
397                }
398                throw Exception("Internal error: could not find unoccupied sampler channel index.");
399            }
400    
401            // we have not reached the index limit so we just add the channel past the highest index
402          SamplerChannel* pChannel = new SamplerChannel(this);          SamplerChannel* pChannel = new SamplerChannel(this);
403          vSamplerChannels.push_back(pChannel);          mSamplerChannels[lastIndex + 1] = pChannel;
404            fireChannelCountChanged(SamplerChannels());
405            pChannel->AddEngineChangeListener(&eventHandler);
406          return pChannel;          return pChannel;
407      }      }
408    
409      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
410          if (uiSamplerChannel >= SamplerChannels()) return NULL;          return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
411          return vSamplerChannels[uiSamplerChannel];      }
412    
413        std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
414            return mSamplerChannels;
415      }      }
416    
417      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
418          std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
419          for (; iterChan != vSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
420              if (*iterChan == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
421                  vSamplerChannels.erase(iterChan);                  pSamplerChannel->RemoveAllEngineChangeListeners();
422                    mSamplerChannels.erase(iterChan);
423                  delete pSamplerChannel;                  delete pSamplerChannel;
424                    fireChannelCountChanged(SamplerChannels());
425                  return;                  return;
426              }              }
427          }          }
# Line 195  namespace LinuxSampler { Line 437  namespace LinuxSampler {
437          return AudioOutputDeviceFactory::AvailableDrivers();          return AudioOutputDeviceFactory::AvailableDrivers();
438      }      }
439    
440      AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {      std::vector<String> Sampler::AvailableMidiInputDrivers() {
441            return MidiInputDeviceFactory::AvailableDrivers();
442        }
443    
444        std::vector<String> Sampler::AvailableEngineTypes() {
445            return EngineFactory::AvailableEngineTypes();
446        }
447    
448        AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (Exception) {
449          // create new device          // create new device
450          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
451    
         // activate device  
         pDevice->Play();  
   
452          // add new audio device to the audio device list          // add new audio device to the audio device list
453          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
454              if (!mAudioOutputDevices[i]) {              if (!mAudioOutputDevices[i]) {
# Line 210  namespace LinuxSampler { Line 457  namespace LinuxSampler {
457              }              }
458          }          }
459    
460            fireAudioDeviceCountChanged(AudioOutputDevices());
461          return pDevice;          return pDevice;
462      }      }
463    
# Line 217  namespace LinuxSampler { Line 465  namespace LinuxSampler {
465          return mAudioOutputDevices.size();          return mAudioOutputDevices.size();
466      }      }
467    
468        uint Sampler::MidiInputDevices() {
469            return mMidiInputDevices.size();
470        }
471    
472      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
473          return mAudioOutputDevices;          return mAudioOutputDevices;
474      }      }
475    
476      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {      std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
477            return mMidiInputDevices;
478        }
479    
480        void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
481          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
482          for (; iter != mAudioOutputDevices.end(); iter++) {          for (; iter != mAudioOutputDevices.end(); iter++) {
483              if (iter->second == pDevice) {              if (iter->second == pDevice) {
484                  // check if there are still sampler engines connected to this device                  // check if there are still sampler engines connected to this device
485                  for (uint i = 0; i < SamplerChannels(); i++)                  for (uint i = 0; i < SamplerChannels(); i++)
486                      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.");
487    
488                  // disable device                  // disable device
489                  pDevice->Stop();                  pDevice->Stop();
# Line 237  namespace LinuxSampler { Line 493  namespace LinuxSampler {
493    
494                  // destroy and free device from memory                  // destroy and free device from memory
495                  delete pDevice;                  delete pDevice;
496    
497                    fireAudioDeviceCountChanged(AudioOutputDevices());
498                    break;
499              }              }
500          }          }
501      }      }
502    
503      MidiInputDevice* Sampler::CreateMidiInputDevice(MidiInputDevice::type_t MidiType) {      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
504          // check if device already created          MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
505          MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);          for (; iter != mMidiInputDevices.end(); iter++) {
506          if (pDevice) return pDevice;              if (iter->second == pDevice) {
507                    // check if there are still sampler engines connected to this device
508                    for (uint i = 0; i < SamplerChannels(); i++)
509                        if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw Exception("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
510    
511                    // disable device
512                    pDevice->StopListen();
513    
514          // create new device                  // remove device from the device list
515          switch (MidiType) {                  mMidiInputDevices.erase(iter);
516              case MidiInputDevice::type_alsa:  
517                  pDevice = new MidiInputDeviceAlsa;                  // destroy and free device from memory
518                    delete pDevice;
519    
520                    fireMidiDeviceCountChanged(MidiInputDevices());
521                  break;                  break;
522              default:              }
                 throw LinuxSamplerException("Unknown audio output device type");  
523          }          }
524        }
525    
526          // activate device      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception) {
527          pDevice->Listen();          // create new device
528            MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
529    
530          // add new MIDI device to the MIDI device list          // add new device to the midi device list
531          MidiInputDevices[MidiType] = pDevice;          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
532                    if (!mMidiInputDevices[i]) {
533                            mMidiInputDevices[i] = pDevice;
534                            break;
535                    }
536            }
537    
538            fireMidiDeviceCountChanged(MidiInputDevices());
539          return pDevice;          return pDevice;
540      }      }
541    
542      MidiInputDevice* Sampler::GetMidiInputDevice(MidiInputDevice::type_t MidiType) {      int Sampler::GetVoiceCount() {
543          MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);          int count = 0;
544          return (iter != MidiInputDevices.end()) ? iter->second : NULL;          std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
545    
546            for(; it != EngineFactory::EngineInstances().end(); it++) {
547                count += (*it)->VoiceCount();
548            }
549    
550            return count;
551        }
552    
553        void Sampler::Reset() {
554            // delete sampler channels
555            try {
556                while (true) {
557                        SamplerChannelMap::iterator iter = mSamplerChannels.begin();
558                        if (iter == mSamplerChannels.end()) break;
559                        RemoveSamplerChannel(iter->second);
560                }
561            }
562            catch(...) {
563                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
564                exit(EXIT_FAILURE);
565            }
566    
567            // delete midi input devices
568            try {
569                while (true) {
570                        MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
571                        if (iter == mMidiInputDevices.end()) break;
572                        DestroyMidiInputDevice(iter->second);
573                }
574            }
575            catch(...) {
576                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
577                exit(EXIT_FAILURE);
578            }
579    
580            // delete audio output devices
581            try {
582                while (true) {
583                        AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
584                        if (iter == mAudioOutputDevices.end()) break;
585                        DestroyAudioOutputDevice(iter->second);
586                }
587            }
588            catch(...) {
589                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
590                exit(EXIT_FAILURE);
591            }
592    
593            // delete MIDI instrument maps
594            try {
595                MidiInstrumentMapper::RemoveAllMaps();
596            }
597            catch(...) {
598                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI instrument maps, exiting.\n" << std::flush;
599                exit(EXIT_FAILURE);
600            }
601      }      }
602    
603  } // namespace LinuxSampler  } // namespace LinuxSampler
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