/[svn]/linuxsampler/trunk/src/Sampler.cpp
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revision 1835 by iliev, Mon Feb 16 17:56:50 2009 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 70  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 119  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 142  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 154  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 162  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 555  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 (SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();              ) if (iterChan->second->GetAudioOutputDevice() == pDevice) throw Exception("Sampler channel " + ToString(iterChan->first) + " is still connected to the audio output device.");
595                       iterChan != mSamplerChannels.end(); iterChan++)  
596                      if (iterChan->second->GetAudioOutputDevice() == pDevice) throw Exception("Sampler channel " + ToString(iterChan->first) + " is still connected to the audio output device.");              //TODO: should we add fireAudioDeviceToBeDestroyed() here ?
597                AudioOutputDeviceFactory::Destroy(pDevice);
598                  // disable device              fireAudioDeviceCountChanged(AudioOutputDevices());
                 pDevice->Stop();  
   
                 // remove device from the device list  
                 mAudioOutputDevices.erase(iter);  
   
                 // destroy and free device from memory  
                 delete pDevice;  
   
                 fireAudioDeviceCountChanged(AudioOutputDevices());  
                 break;  
             }  
599          }          }
600      }      }
601    
# Line 613  namespace LinuxSampler { Line 605  namespace LinuxSampler {
605           * to the element that is being erased. So we need to copy the map           * to the element that is being erased. So we need to copy the map
606           * by calling GetAudioOutputDevices() to prevent that.           * by calling GetAudioOutputDevices() to prevent that.
607           */           */
608          AudioOutputDeviceMap devs = GetAudioOutputDevices();          std::map<uint, AudioOutputDevice*> devs = GetAudioOutputDevices();
609          AudioOutputDeviceMap::iterator iter = devs.begin();          std::map<uint, AudioOutputDevice*>::iterator iter = devs.begin();
610          for(; iter != devs.end(); iter++) {          for (; iter != devs.end(); iter++) {
611              DestroyAudioOutputDevice(iter->second);              AudioOutputDevice* pDevice = iter->second;
612    
613                // skip non-autonomous devices
614                if (!pDevice->isAutonomousDevice()) continue;
615    
616                DestroyAudioOutputDevice(pDevice);
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 (SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();              ) if (iterChan->second->GetMidiInputDevice() == pDevice) throw Exception("Sampler channel " + ToString(iterChan->first) + " is still connected to the midi input device.");
626                       iterChan != mSamplerChannels.end(); iterChan++)  
627                      if (iterChan->second->GetMidiInputDevice() == pDevice) throw Exception("Sampler channel " + ToString(iterChan->first) + " is still connected to the midi input device.");              fireMidiDeviceToBeDestroyed(pDevice);
628                MidiInputDeviceFactory::Destroy(pDevice);
629                  fireMidiDeviceToBeDestroyed(pDevice);              fireMidiDeviceCountChanged(MidiInputDevices());
   
                 // disable device  
                 pDevice->StopListen();  
   
                 // remove device from the device list  
                 mMidiInputDevices.erase(iter);  
   
                 // destroy and free device from memory  
                 delete pDevice;  
   
                 fireMidiDeviceCountChanged(MidiInputDevices());  
                 break;  
             }  
630          }          }
631      }      }
632    
# Line 652  namespace LinuxSampler { Line 636  namespace LinuxSampler {
636           * to the element that is being erased. So we need to copy the map           * to the element that is being erased. So we need to copy the map
637           * by calling GetMidiInputDevices() to prevent that.           * by calling GetMidiInputDevices() to prevent that.
638           */           */
639          MidiInputDeviceMap devs = GetMidiInputDevices();          std::map<uint, MidiInputDevice*> devs = GetMidiInputDevices();
640          MidiInputDeviceMap::iterator iter = devs.begin();          std::map<uint, MidiInputDevice*>::iterator iter = devs.begin();
641          for(; iter != devs.end(); iter++) {          for (; iter != devs.end(); iter++) {
642              DestroyMidiInputDevice(iter->second);              MidiInputDevice* pDevice = iter->second;
643    
644                // skip non-autonomous devices
645                if (!pDevice->isAutonomousDevice()) continue;
646    
647                DestroyMidiInputDevice(pDevice);
648          }          }
649      }      }
650    
# Line 663  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 701  namespace LinuxSampler { Line 682  namespace LinuxSampler {
682      void Sampler::Reset() {      void Sampler::Reset() {
683          // delete sampler channels          // delete sampler channels
684          try {          try {
685              RemoveAllSamplerChannels();              RemoveAllSamplerChannels();
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 710  namespace LinuxSampler { Line 691  namespace LinuxSampler {
691    
692          // delete midi input devices          // delete midi input devices
693          try {          try {
694              DestroyAllMidiInputDevices();              DestroyAllMidiInputDevices();
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 719  namespace LinuxSampler { Line 700  namespace LinuxSampler {
700    
701          // delete audio output devices          // delete audio output devices
702          try {          try {
703              DestroyAllAudioOutputDevices();              DestroyAllAudioOutputDevices();
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 766  namespace LinuxSampler { Line 747  namespace LinuxSampler {
747                  fireStreamCountChanged(iter->first, pEngineChannel->GetDiskStreamCount());                  fireStreamCountChanged(iter->first, pEngineChannel->GetDiskStreamCount());
748                  fireBufferFillChanged(iter->first, pEngine->DiskStreamBufferFillPercentage());                  fireBufferFillChanged(iter->first, pEngine->DiskStreamBufferFillPercentage());
749              }              }
750                
751              fireTotalStreamCountChanged(GetDiskStreamCount());              fireTotalStreamCountChanged(GetDiskStreamCount());
752              fireTotalVoiceCountChanged(GetVoiceCount());              fireTotalVoiceCountChanged(GetVoiceCount());
753    
# Line 774  namespace LinuxSampler { Line 755  namespace LinuxSampler {
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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