/[svn]/linuxsampler/trunk/src/Sampler.cpp
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revision 835 by persson, Mon Feb 6 18:07:17 2006 UTC revision 981 by iliev, Sun Dec 17 22:35:01 2006 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 Christian Schoenebeck                              *   *   Copyright (C) 2005, 2006 Christian Schoenebeck                        *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This program 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 48  namespace LinuxSampler { Line 48  namespace LinuxSampler {
48    
49      SamplerChannel::~SamplerChannel() {      SamplerChannel::~SamplerChannel() {
50          if (pEngineChannel) {          if (pEngineChannel) {
51                Engine* engine = pEngineChannel->GetEngine();
52                if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
53    
54              MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : __GetMidiInputDevicePort(GetMidiInputChannel());              MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : __GetMidiInputDevicePort(GetMidiInputChannel());
55              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
56              if (pEngineChannel) {              if (pEngineChannel) {
57                  if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();                  if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
58                  EngineChannelFactory::Destroy(pEngineChannel);                  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::SetEngineType(String EngineType) throw (LinuxSamplerException) {      void SamplerChannel::SetEngineType(String EngineType) throw (Exception) {
68          dmsg(2,("SamplerChannel: Assigning engine type..."));          dmsg(2,("SamplerChannel: Assigning engine type..."));
69    
70          // create new engine channel          // create new engine channel
71          EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);          EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
72          if (!pNewEngineChannel) throw LinuxSamplerException("Unknown engine type");          if (!pNewEngineChannel) throw Exception("Unknown engine type");
73    
74          //FIXME: hack to allow fast retrieval of engine channel's sampler channel index          //FIXME: hack to allow fast retrieval of engine channel's sampler channel index
75          pNewEngineChannel->iSamplerChannelIndex = Index();          pNewEngineChannel->iSamplerChannelIndex = Index();
# Line 71  namespace LinuxSampler { Line 78  namespace LinuxSampler {
78          MidiInputPort* pMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());          MidiInputPort* pMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
79          // disconnect old engine channel          // disconnect old engine channel
80          if (pEngineChannel) {          if (pEngineChannel) {
81                Engine* engine = pEngineChannel->GetEngine();
82                if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
83    
84              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
85              if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();              if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
86              EngineChannelFactory::Destroy(pEngineChannel);              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          // connect new engine channel
         if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, GetMidiInputChannel());  
94          if (pAudioOutputDevice) {          if (pAudioOutputDevice) {
95              pNewEngineChannel->Connect(pAudioOutputDevice);              pNewEngineChannel->Connect(pAudioOutputDevice);
96              pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());              pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
97          }          }
98            if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, GetMidiInputChannel());
99          pEngineChannel = pNewEngineChannel;          pEngineChannel = pNewEngineChannel;
100    
101          // from now on get MIDI device and port from EngineChannel object          // from now on get MIDI device and port from EngineChannel object
# Line 94  namespace LinuxSampler { Line 108  namespace LinuxSampler {
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 && pEngineChannel) pEngineChannel->DisconnectAudioOutputDevice();          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 (pEngineChannel) {          if (pEngineChannel) {
# Line 117  namespace LinuxSampler { Line 143  namespace LinuxSampler {
143      }      }
144    
145      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) {
146          if (!pDevice) throw LinuxSamplerException("No MIDI input device assigned.");          if (!pDevice) throw Exception("No MIDI input device assigned.");
147    
148          // get old and new midi input port          // get old and new midi input port
149          MidiInputPort* pOldMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());          MidiInputPort* pOldMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
# Line 136  namespace LinuxSampler { Line 162  namespace LinuxSampler {
162          if (pNewMidiInputPort && pEngineChannel) pNewMidiInputPort->Connect(pEngineChannel, MidiChannel);          if (pNewMidiInputPort && pEngineChannel) pNewMidiInputPort->Connect(pEngineChannel, MidiChannel);
163          // Ooops.          // Ooops.
164          if (pNewMidiInputPort == NULL)          if (pNewMidiInputPort == NULL)
165              throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");              throw Exception("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
166      }      }
167    
168      EngineChannel* SamplerChannel::GetEngineChannel() {      EngineChannel* SamplerChannel::GetEngineChannel() {
# Line 175  namespace LinuxSampler { Line 201  namespace LinuxSampler {
201              }              }
202          }          }
203    
204          throw LinuxSamplerException("Internal error: SamplerChannel index not found");          throw Exception("Internal error: SamplerChannel index not found");
205      }      }
206    
207      MidiInputPort* SamplerChannel::__GetMidiInputDevicePort(int iMidiPort) {      MidiInputPort* SamplerChannel::__GetMidiInputDevicePort(int iMidiPort) {
# Line 225  namespace LinuxSampler { Line 251  namespace LinuxSampler {
251                  LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, i));                  LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, i));
252                  return pChannel;                  return pChannel;
253              }              }
254              throw LinuxSamplerException("Internal error: could not find unoccupied sampler channel index.");              throw Exception("Internal error: could not find unoccupied sampler channel index.");
255          }          }
256    
257          // we have not reached the index limit so we just add the channel past the highest index          // we have not reached the index limit so we just add the channel past the highest index
# Line 265  namespace LinuxSampler { Line 291  namespace LinuxSampler {
291          return AudioOutputDeviceFactory::AvailableDrivers();          return AudioOutputDeviceFactory::AvailableDrivers();
292      }      }
293    
294      AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {      std::vector<String> Sampler::AvailableMidiInputDrivers() {
295            return MidiInputDeviceFactory::AvailableDrivers();
296        }
297    
298        std::vector<String> Sampler::AvailableEngineTypes() {
299            return EngineFactory::AvailableEngineTypes();
300        }
301    
302        AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (Exception) {
303          // create new device          // create new device
304          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
305    
# Line 277  namespace LinuxSampler { Line 311  namespace LinuxSampler {
311              }              }
312          }          }
313    
314            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_audio_device_count, AudioOutputDevices()));
315          return pDevice;          return pDevice;
316      }      }
317    
# Line 296  namespace LinuxSampler { Line 331  namespace LinuxSampler {
331          return mMidiInputDevices;          return mMidiInputDevices;
332      }      }
333    
334      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
335          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
336          for (; iter != mAudioOutputDevices.end(); iter++) {          for (; iter != mAudioOutputDevices.end(); iter++) {
337              if (iter->second == pDevice) {              if (iter->second == pDevice) {
338                  // check if there are still sampler engines connected to this device                  // check if there are still sampler engines connected to this device
339                  for (uint i = 0; i < SamplerChannels(); i++)                  for (uint i = 0; i < SamplerChannels(); i++)
340                      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.");
341    
342                  // disable device                  // disable device
343                  pDevice->Stop();                  pDevice->Stop();
344    
345                    // remove device from the device list
346                    mAudioOutputDevices.erase(iter);
347    
348                  // destroy and free device from memory                  // destroy and free device from memory
349                  delete pDevice;                  delete pDevice;
350    
351                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_audio_device_count, AudioOutputDevices()));
352                    break;
353              }              }
354          }          }
         // remove devices from the device list  
         mAudioOutputDevices.clear();  
355      }      }
356    
357      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
358          MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();          MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
359          for (; iter != mMidiInputDevices.end(); iter++) {          for (; iter != mMidiInputDevices.end(); iter++) {
360              if (iter->second == pDevice) {              if (iter->second == pDevice) {
361                  // check if there are still sampler engines connected to this device                  // check if there are still sampler engines connected to this device
362                  for (uint i = 0; i < SamplerChannels(); i++)                  for (uint i = 0; i < SamplerChannels(); i++)
363                      if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");                      if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw Exception("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
364    
365                  // disable device                  // disable device
366                  pDevice->StopListen();                  pDevice->StopListen();
367    
368                    // remove device from the device list
369                    mMidiInputDevices.erase(iter);
370    
371                  // destroy and free device from memory                  // destroy and free device from memory
372                  delete pDevice;                  delete pDevice;
373    
374                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_midi_device_count, MidiInputDevices()));
375                    break;
376              }              }
377          }          }
         // remove devices from the device list  
         mMidiInputDevices.clear();  
378      }      }
379    
380      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception) {
381          // create new device          // create new device
382          MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);          MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
383    
# Line 346  namespace LinuxSampler { Line 389  namespace LinuxSampler {
389                  }                  }
390          }          }
391    
392            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_midi_device_count, MidiInputDevices()));
393          return pDevice;          return pDevice;
394      }      }
395    
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