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

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revision 1761 by iliev, Fri Aug 29 15:42:06 2008 UTC revision 1937 by schoenebeck, Sun Jul 12 19:52:20 2009 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                       *   *   Copyright (C) 2005 - 2009 Christian Schoenebeck                       *
7   *                                                                         *   *                                                                         *
8   *   This library 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  *
# Line 33  Line 33 
33  #include "drivers/midi/MidiInputDeviceFactory.h"  #include "drivers/midi/MidiInputDeviceFactory.h"
34  #include "drivers/midi/MidiInstrumentMapper.h"  #include "drivers/midi/MidiInstrumentMapper.h"
35  #include "common/Features.h"  #include "common/Features.h"
36    #include "network/lscpserver.h"
37    
38  namespace LinuxSampler {  namespace LinuxSampler {
39    
# Line 69  namespace LinuxSampler { Line 70  namespace LinuxSampler {
70    
71      void SamplerChannel::SetEngineType(String EngineType) throw (Exception) {      void SamplerChannel::SetEngineType(String EngineType) throw (Exception) {
72          dmsg(2,("SamplerChannel: Assigning engine type..."));          dmsg(2,("SamplerChannel: Assigning engine type..."));
73            
74          if (pEngineChannel) {          if (pEngineChannel) {
75              if (!strcasecmp(pEngineChannel->EngineName().c_str(), EngineType.c_str())) {              if (!strcasecmp(pEngineChannel->EngineName().c_str(), EngineType.c_str())) {
76                  dmsg(2,("OK\n"));                  dmsg(2,("OK\n"));
# Line 118  namespace LinuxSampler { Line 119  namespace LinuxSampler {
119          dmsg(2,("OK\n"));          dmsg(2,("OK\n"));
120      }      }
121    
122      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
123          if(pAudioOutputDevice == pDevice) return;          if(pAudioOutputDevice == pDevice) return;
124    
125          // disconnect old device          // disconnect old device
126          if (pAudioOutputDevice && pEngineChannel) {          if (pAudioOutputDevice && pEngineChannel) {
127                if (!pAudioOutputDevice->isAutonomousDevice())
128                    throw Exception("The audio output device '" + pAudioOutputDevice->Driver() + "' cannot be dropped from this sampler channel!");
129    
130              Engine* engine = pEngineChannel->GetEngine();              Engine* engine = pEngineChannel->GetEngine();
131              pAudioOutputDevice->Disconnect(engine);              pAudioOutputDevice->Disconnect(engine);
132    
# Line 141  namespace LinuxSampler { Line 145  namespace LinuxSampler {
145          }          }
146      }      }
147    
148      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
149         SetMidiInput(pDevice, 0, GetMidiInputChannel());         SetMidiInput(pDevice, 0, GetMidiInputChannel());
150      }      }
151    
152      void SamplerChannel::SetMidiInputPort(int MidiPort) {      void SamplerChannel::SetMidiInputPort(int MidiPort) throw (Exception) {
153         SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());         SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());
154      }      }
155    
# Line 153  namespace LinuxSampler { Line 157  namespace LinuxSampler {
157         SetMidiInput(GetMidiInputDevice(), GetMidiInputPort(), MidiChannel);         SetMidiInput(GetMidiInputDevice(), GetMidiInputPort(), MidiChannel);
158      }      }
159    
160      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) throw (Exception) {
161          if (!pDevice) throw Exception("No MIDI input device assigned.");          if (!pDevice) throw Exception("No MIDI input device assigned.");
162    
163          // get old and new midi input port          // get old and new midi input port
# Line 161  namespace LinuxSampler { Line 165  namespace LinuxSampler {
165          MidiInputPort* pNewMidiInputPort = pDevice->GetPort(iMidiPort);          MidiInputPort* pNewMidiInputPort = pDevice->GetPort(iMidiPort);
166    
167          // disconnect old device port          // disconnect old device port
168          if (pOldMidiInputPort && pEngineChannel) pOldMidiInputPort->Disconnect(pEngineChannel);          if (pOldMidiInputPort && pEngineChannel) {
169                MidiInputDevice* pOldDevice = pOldMidiInputPort->GetDevice();
170                if (pOldMidiInputPort != pNewMidiInputPort &&
171                    pOldDevice && !pOldDevice->isAutonomousDevice()
172                ) throw Exception("The MIDI input port '" + pOldDevice->Driver() + "' cannot be altered on this sampler channel!");
173    
174                pOldMidiInputPort->Disconnect(pEngineChannel);
175            }
176    
177          // remember new device, port and channel if not engine channel yet created          // remember new device, port and channel if not engine channel yet created
178          if (!pEngineChannel) {          if (!pEngineChannel) {
179              this->pMidiInputDevice = pDevice;              this->pMidiInputDevice = pDevice;
# Line 258  namespace LinuxSampler { Line 270  namespace LinuxSampler {
270    
271      Sampler::Sampler() {      Sampler::Sampler() {
272          eventHandler.SetSampler(this);          eventHandler.SetSampler(this);
273            uiOldTotalVoiceCount = uiOldTotalStreamCount = 0;
274      }      }
275    
276      Sampler::~Sampler() {      Sampler::~Sampler() {
# Line 343  namespace LinuxSampler { Line 356  namespace LinuxSampler {
356      }      }
357    
358      void Sampler::fireVoiceCountChanged(int ChannelId, int NewCount) {      void Sampler::fireVoiceCountChanged(int ChannelId, int NewCount) {
359            std::map<uint, uint>::iterator it = mOldVoiceCounts.find(ChannelId);
360            if (it != mOldVoiceCounts.end()) {
361                uint oldCount = it->second;
362                if (NewCount == oldCount) return;
363            }
364    
365            mOldVoiceCounts[ChannelId] = NewCount;
366    
367          for (int i = 0; i < llVoiceCountListeners.GetListenerCount(); i++) {          for (int i = 0; i < llVoiceCountListeners.GetListenerCount(); i++) {
368              llVoiceCountListeners.GetListener(i)->VoiceCountChanged(ChannelId, NewCount);              llVoiceCountListeners.GetListener(i)->VoiceCountChanged(ChannelId, NewCount);
369          }          }
# Line 357  namespace LinuxSampler { Line 378  namespace LinuxSampler {
378      }      }
379    
380      void Sampler::fireStreamCountChanged(int ChannelId, int NewCount) {      void Sampler::fireStreamCountChanged(int ChannelId, int NewCount) {
381            std::map<uint, uint>::iterator it = mOldStreamCounts.find(ChannelId);
382            if (it != mOldStreamCounts.end()) {
383                uint oldCount = it->second;
384                if (NewCount == oldCount) return;
385            }
386    
387            mOldStreamCounts[ChannelId] = NewCount;
388    
389          for (int i = 0; i < llStreamCountListeners.GetListenerCount(); i++) {          for (int i = 0; i < llStreamCountListeners.GetListenerCount(); i++) {
390              llStreamCountListeners.GetListener(i)->StreamCountChanged(ChannelId, NewCount);              llStreamCountListeners.GetListener(i)->StreamCountChanged(ChannelId, NewCount);
391          }          }
# Line 385  namespace LinuxSampler { Line 414  namespace LinuxSampler {
414      }      }
415    
416      void Sampler::fireTotalStreamCountChanged(int NewCount) {      void Sampler::fireTotalStreamCountChanged(int NewCount) {
417            if (NewCount == uiOldTotalStreamCount) return;
418            uiOldTotalStreamCount = NewCount;
419    
420          for (int i = 0; i < llTotalStreamCountListeners.GetListenerCount(); i++) {          for (int i = 0; i < llTotalStreamCountListeners.GetListenerCount(); i++) {
421              llTotalStreamCountListeners.GetListener(i)->TotalStreamCountChanged(NewCount);              llTotalStreamCountListeners.GetListener(i)->TotalStreamCountChanged(NewCount);
422          }          }
# Line 399  namespace LinuxSampler { Line 431  namespace LinuxSampler {
431      }      }
432    
433      void Sampler::fireTotalVoiceCountChanged(int NewCount) {      void Sampler::fireTotalVoiceCountChanged(int NewCount) {
434            if (NewCount == uiOldTotalVoiceCount) return;
435            uiOldTotalVoiceCount = NewCount;
436    
437          for (int i = 0; i < llTotalVoiceCountListeners.GetListenerCount(); i++) {          for (int i = 0; i < llTotalVoiceCountListeners.GetListenerCount(); i++) {
438              llTotalVoiceCountListeners.GetListener(i)->TotalVoiceCountChanged(NewCount);              llTotalVoiceCountListeners.GetListener(i)->TotalVoiceCountChanged(NewCount);
439          }          }
# Line 485  namespace LinuxSampler { Line 520  namespace LinuxSampler {
520          for (; iterChan != mSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
521              if (iterChan->second == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
522                  fireChannelToBeRemoved(pSamplerChannel);                  fireChannelToBeRemoved(pSamplerChannel);
523                    mOldVoiceCounts.erase(pSamplerChannel->Index());
524                    mOldStreamCounts.erase(pSamplerChannel->Index());
525                  pSamplerChannel->RemoveAllEngineChangeListeners();                  pSamplerChannel->RemoveAllEngineChangeListeners();
526                  mSamplerChannels.erase(iterChan);                  mSamplerChannels.erase(iterChan);
527                  delete pSamplerChannel;                  delete pSamplerChannel;
# Line 500  namespace LinuxSampler { Line 537  namespace LinuxSampler {
537          RemoveSamplerChannel(pChannel);          RemoveSamplerChannel(pChannel);
538      }      }
539    
540        void Sampler::RemoveAllSamplerChannels() {
541            /*
542             * In maps iterator invalidation occurs when the iterator point
543             * to the element that is being erased. So we need to copy the map
544             * by calling GetSamplerChannels() to prevent that.
545             */
546            SamplerChannelMap chns = GetSamplerChannels();
547            SamplerChannelMap::iterator iter = chns.begin();
548            for(; iter != chns.end(); iter++) {
549                RemoveSamplerChannel(iter->second);
550            }
551        }
552    
553      std::vector<String> Sampler::AvailableAudioOutputDrivers() {      std::vector<String> Sampler::AvailableAudioOutputDrivers() {
554          return AudioOutputDeviceFactory::AvailableDrivers();          return AudioOutputDeviceFactory::AvailableDrivers();
555      }      }
# Line 516  namespace LinuxSampler { Line 566  namespace LinuxSampler {
566          // create new device          // create new device
567          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
568    
         // add new audio device to the audio device list  
         for (uint i = 0; ; i++) { // seek for a free place starting from the beginning  
             if (!mAudioOutputDevices[i]) {  
                 mAudioOutputDevices[i] = pDevice;  
                 break;  
             }  
         }  
   
569          fireAudioDeviceCountChanged(AudioOutputDevices());          fireAudioDeviceCountChanged(AudioOutputDevices());
570          return pDevice;          return pDevice;
571      }      }
572    
573      uint Sampler::AudioOutputDevices() {      uint Sampler::AudioOutputDevices() {
574          return mAudioOutputDevices.size();          return AudioOutputDeviceFactory::Devices().size();
575      }      }
576    
577      uint Sampler::MidiInputDevices() {      uint Sampler::MidiInputDevices() {
578          return mMidiInputDevices.size();          return MidiInputDeviceFactory::Devices().size();
579      }      }
580    
581      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
582          return mAudioOutputDevices;          return AudioOutputDeviceFactory::Devices();
583      }      }
584    
585      std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {      std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
586          return mMidiInputDevices;          return MidiInputDeviceFactory::Devices();
587      }      }
588    
589      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
590          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();          if (pDevice) {
591          for (; iter != mAudioOutputDevices.end(); iter++) {              // check if there are still sampler engines connected to this device
592              if (iter->second == pDevice) {              for (SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
593                  // check if there are still sampler engines connected to this device                   iterChan != mSamplerChannels.end(); iterChan++
594                  for (uint i = 0; i < SamplerChannels(); i++)              ) if (iterChan->second->GetAudioOutputDevice() == pDevice) throw Exception("Sampler channel " + ToString(iterChan->first) + " is still connected to the audio output device.");
595                      if (GetSamplerChannel(i)->GetAudioOutputDevice() == pDevice) throw Exception("Sampler channel " + ToString(i) + " is still connected to the audio output device.");  
596                //TODO: should we add fireAudioDeviceToBeDestroyed() here ?
597                  // disable device              AudioOutputDeviceFactory::Destroy(pDevice);
598                  pDevice->Stop();              fireAudioDeviceCountChanged(AudioOutputDevices());
599            }
600        }
601    
602                  // remove device from the device list      void Sampler::DestroyAllAudioOutputDevices() throw (Exception) {
603                  mAudioOutputDevices.erase(iter);          /*
604             * In maps iterator invalidation occurs when the iterator point
605             * to the element that is being erased. So we need to copy the map
606             * by calling GetAudioOutputDevices() to prevent that.
607             */
608            std::map<uint, AudioOutputDevice*> devs = GetAudioOutputDevices();
609            std::map<uint, AudioOutputDevice*>::iterator iter = devs.begin();
610            for (; iter != devs.end(); iter++) {
611                AudioOutputDevice* pDevice = iter->second;
612    
613                  // destroy and free device from memory              // skip non-autonomous devices
614                  delete pDevice;              if (!pDevice->isAutonomousDevice()) continue;
615    
616                  fireAudioDeviceCountChanged(AudioOutputDevices());              DestroyAudioOutputDevice(pDevice);
                 break;  
             }  
617          }          }
618      }      }
619    
620      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
621          MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();          if (pDevice) {
622          for (; iter != mMidiInputDevices.end(); iter++) {              // check if there are still sampler engines connected to this device
623              if (iter->second == pDevice) {              for (SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
624                  // check if there are still sampler engines connected to this device                   iterChan != mSamplerChannels.end(); iterChan++
625                  for (uint i = 0; i < SamplerChannels(); i++)              ) if (iterChan->second->GetMidiInputDevice() == pDevice) throw Exception("Sampler channel " + ToString(iterChan->first) + " is still connected to the midi input device.");
626                      if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw Exception("Sampler channel " + ToString(i) + " is still connected to the midi input device.");  
627                fireMidiDeviceToBeDestroyed(pDevice);
628                  fireMidiDeviceToBeDestroyed(pDevice);              MidiInputDeviceFactory::Destroy(pDevice);
629                fireMidiDeviceCountChanged(MidiInputDevices());
630                  // disable device          }
631                  pDevice->StopListen();      }
632    
633                  // remove device from the device list      void Sampler::DestroyAllMidiInputDevices() throw (Exception) {
634                  mMidiInputDevices.erase(iter);          /*
635             * In maps iterator invalidation occurs when the iterator point
636             * to the element that is being erased. So we need to copy the map
637             * by calling GetMidiInputDevices() to prevent that.
638             */
639            std::map<uint, MidiInputDevice*> devs = GetMidiInputDevices();
640            std::map<uint, MidiInputDevice*>::iterator iter = devs.begin();
641            for (; iter != devs.end(); iter++) {
642                MidiInputDevice* pDevice = iter->second;
643    
644                  // destroy and free device from memory              // skip non-autonomous devices
645                  delete pDevice;              if (!pDevice->isAutonomousDevice()) continue;
646    
647                  fireMidiDeviceCountChanged(MidiInputDevices());              DestroyMidiInputDevice(pDevice);
                 break;  
             }  
648          }          }
649      }      }
650    
# Line 596  namespace LinuxSampler { Line 652  namespace LinuxSampler {
652          // create new device          // create new device
653          MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);          MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
654    
         // add new device to the midi device list  
         for (uint i = 0; ; i++) { // seek for a free place starting from the beginning  
                 if (!mMidiInputDevices[i]) {  
                         mMidiInputDevices[i] = pDevice;  
                         break;  
                 }  
         }  
   
655          fireMidiDeviceCreated(pDevice);          fireMidiDeviceCreated(pDevice);
656          fireMidiDeviceCountChanged(MidiInputDevices());          fireMidiDeviceCountChanged(MidiInputDevices());
657          return pDevice;          return pDevice;
# Line 634  namespace LinuxSampler { Line 682  namespace LinuxSampler {
682      void Sampler::Reset() {      void Sampler::Reset() {
683          // delete sampler channels          // delete sampler channels
684          try {          try {
685              while (true) {              RemoveAllSamplerChannels();
                     SamplerChannelMap::iterator iter = mSamplerChannels.begin();  
                     if (iter == mSamplerChannels.end()) break;  
                     RemoveSamplerChannel(iter->second);  
             }  
686          }          }
687          catch(...) {          catch(...) {
688              std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;              std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
# Line 647  namespace LinuxSampler { Line 691  namespace LinuxSampler {
691    
692          // delete midi input devices          // delete midi input devices
693          try {          try {
694              while (true) {              DestroyAllMidiInputDevices();
                     MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();  
                     if (iter == mMidiInputDevices.end()) break;  
                     DestroyMidiInputDevice(iter->second);  
             }  
695          }          }
696          catch(...) {          catch(...) {
697              std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;              std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
# Line 660  namespace LinuxSampler { Line 700  namespace LinuxSampler {
700    
701          // delete audio output devices          // delete audio output devices
702          try {          try {
703              while (true) {              DestroyAllAudioOutputDevices();
                     AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();  
                     if (iter == mAudioOutputDevices.end()) break;  
                     DestroyAudioOutputDevice(iter->second);  
             }  
704          }          }
705          catch(...) {          catch(...) {
706              std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;              std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
# Line 689  namespace LinuxSampler { Line 725  namespace LinuxSampler {
725          return Features::enableDenormalsAreZeroMode();          return Features::enableDenormalsAreZeroMode();
726      }      }
727    
728        void Sampler::fireStatistics() {
729            static const LSCPEvent::event_t eventsArr[] = {
730                LSCPEvent::event_voice_count, LSCPEvent::event_stream_count,
731                LSCPEvent::event_buffer_fill, LSCPEvent::event_total_voice_count
732            };
733            static const std::list<LSCPEvent::event_t> events(eventsArr, eventsArr + 4);
734    
735            if (LSCPServer::EventSubscribers(events))
736            {
737                LSCPServer::LockRTNotify();
738                std::map<uint,SamplerChannel*> channels = GetSamplerChannels();
739                std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
740                for (; iter != channels.end(); iter++) {
741                    SamplerChannel* pSamplerChannel = iter->second;
742                    EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
743                    if (!pEngineChannel) continue;
744                    Engine* pEngine = pEngineChannel->GetEngine();
745                    if (!pEngine) continue;
746                    fireVoiceCountChanged(iter->first, pEngineChannel->GetVoiceCount());
747                    fireStreamCountChanged(iter->first, pEngineChannel->GetDiskStreamCount());
748                    fireBufferFillChanged(iter->first, pEngine->DiskStreamBufferFillPercentage());
749                }
750    
751                fireTotalStreamCountChanged(GetDiskStreamCount());
752                fireTotalVoiceCountChanged(GetVoiceCount());
753    
754                LSCPServer::UnlockRTNotify();
755            }
756        }
757    
758    #if defined(WIN32)
759        static HINSTANCE dllInstance = NULL;
760    
761        String Sampler::GetInstallDir() {
762            char buf[MAX_PATH + 1];
763            if (GetModuleFileName(dllInstance, buf, MAX_PATH)) {
764                String s(buf);
765                size_t n = s.rfind('\\');
766                if (n != String::npos) {
767                    return s.substr(0, n);
768                }
769            }
770            return "";
771        }
772    #endif
773  } // namespace LinuxSampler  } // namespace LinuxSampler
774    
775    #if defined(WIN32)
776    extern "C" {
777        BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
778        {
779            switch (reason) {
780            case DLL_PROCESS_ATTACH:
781                LinuxSampler::dllInstance = instance;
782                break;
783            }
784            return TRUE;
785        }
786    }
787    #endif
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