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

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revision 175 by senkov, Tue Jul 6 04:41:23 2004 UTC revision 835 by persson, Mon Feb 6 18:07:17 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                              *
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 24  Line 25 
25    
26  #include "Sampler.h"  #include "Sampler.h"
27    
28  #include "audiodriver/AudioOutputDeviceFactory.h"  #include "engines/EngineFactory.h"
29  #include "mididriver/MidiInputDeviceFactory.h"  #include "engines/EngineChannelFactory.h"
30  #include "engines/gig/Engine.h"  #include "drivers/audio/AudioOutputDeviceFactory.h"
31    #include "drivers/midi/MidiInputDeviceFactory.h"
32    #include "network/lscpserver.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          midiPort           = 0;          pMidiInputDevice   = NULL;
44          midiChannel        = MidiInputDevice::MidiInputPort::midi_chan_all;          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              MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);              MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : __GetMidiInputDevicePort(GetMidiInputChannel());
52              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
53              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              if (pEngineChannel) {
54              delete pEngine;                  if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
55                    EngineChannelFactory::Destroy(pEngineChannel);
56                }
57          }          }
58      }      }
59    
60      void SamplerChannel::LoadEngine(Engine::type_t EngineType) {      void SamplerChannel::SetEngineType(String EngineType) throw (LinuxSamplerException) {
61          dmsg(2,("SamplerChannel: Loading engine..."));          dmsg(2,("SamplerChannel: Assigning engine type..."));
62    
63          // create new engine          // create new engine channel
64          Engine* pNewEngine = NULL;          EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
65          switch (EngineType) {          if (!pNewEngineChannel) throw LinuxSamplerException("Unknown engine type");
66              case Engine::type_gig:  
67                  pNewEngine = new gig::Engine;          //FIXME: hack to allow fast retrieval of engine channel's sampler channel index
68                  break;          pNewEngineChannel->iSamplerChannelIndex = Index();
             default:  
                 throw LinuxSamplerException("Unknown engine type");  
         }  
69    
70          // dereference midi input port.          // dereference midi input port.
71          MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);          MidiInputPort* pMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
72          // disconnect old engine          // disconnect old engine channel
73          if (pEngine) {          if (pEngineChannel) {
74              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
75              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
76              delete pEngine;              EngineChannelFactory::Destroy(pEngineChannel);
77          }          }
78    
79            // connect new engine channel
80            if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, GetMidiInputChannel());
81            if (pAudioOutputDevice) {
82                pNewEngineChannel->Connect(pAudioOutputDevice);
83                pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
84            }
85            pEngineChannel = pNewEngineChannel;
86    
87            // from now on get MIDI device and port from EngineChannel object
88            this->pMidiInputDevice = NULL;
89            this->iMidiPort        = 0;
90    
91            pEngineChannel->StatusChanged(true);
92    
         // connect new engine  
         pEngine = pNewEngine;  
         if (pMidiInputPort) pMidiInputPort->Connect(pNewEngine, this->midiChannel);  
         if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);  
93          dmsg(2,("OK\n"));          dmsg(2,("OK\n"));
94      }      }
95    
96      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
97          // disconnect old device          // disconnect old device
98          if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);          if (pAudioOutputDevice && pEngineChannel) pEngineChannel->DisconnectAudioOutputDevice();
99          // connect new device          // connect new device
100          pAudioOutputDevice = pDevice;          pAudioOutputDevice = pDevice;
101          if (pEngine) pAudioOutputDevice->Connect(pEngine);          if (pEngineChannel) {
102                pEngineChannel->Connect(pAudioOutputDevice);
103                pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
104            }
105      }      }
106    
107      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
108         SetMidiInput(pDevice, this->midiPort, this->midiChannel);         SetMidiInput(pDevice, 0, GetMidiInputChannel());
109      }      }
110        
111      void SamplerChannel::SetMidiInputPort(int MidiPort) {      void SamplerChannel::SetMidiInputPort(int MidiPort) {
112         SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);         SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());
113        }
114    
115        void SamplerChannel::SetMidiInputChannel(midi_chan_t MidiChannel) {
116           SetMidiInput(GetMidiInputDevice(), GetMidiInputPort(), MidiChannel);
117      }      }
118        
119      void SamplerChannel::SetMidiInputChannel(MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) {
120         SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);          if (!pDevice) throw LinuxSamplerException("No MIDI input device assigned.");
121      }  
122                // get old and new midi input port
123      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int MidiPort, MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {          MidiInputPort* pOldMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
124          // dereference old midi input port.          MidiInputPort* pNewMidiInputPort = pDevice->GetPort(iMidiPort);
125          MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);  
126          // disconnect old device port          // disconnect old device port
127          if (pMidiInputPort && pEngine) pMidiInputPort->Disconnect(pEngine);          if (pOldMidiInputPort && pEngineChannel) pOldMidiInputPort->Disconnect(pEngineChannel);
128          // new device, port and channel          // remember new device, port and channel if not engine channel yet created
129          pMidiInputDevice = pDevice;          if (!pEngineChannel) {
130          this->midiPort = MidiPort;              this->pMidiInputDevice = pDevice;
131          this->midiChannel = MidiChannel;              this->iMidiPort        = iMidiPort;
132                this->midiChannel      = MidiChannel;
133            }
134    
135          // connect new device port          // connect new device port
136          pMidiInputPort = GetMidiInputDevicePort(this->midiPort);          if (pNewMidiInputPort && pEngineChannel) pNewMidiInputPort->Connect(pEngineChannel, MidiChannel);
         if (pMidiInputPort && pEngine) pMidiInputPort->Connect(pEngine, MidiChannel);  
137          // Ooops.          // Ooops.
138          if (pMidiInputPort == NULL)          if (pNewMidiInputPort == NULL)
139              throw LinuxSamplerException("There is no MIDI input port with index " + ToString(MidiPort) + ".");              throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
140      }      }
141    
142      Engine* SamplerChannel::GetEngine() {      EngineChannel* SamplerChannel::GetEngineChannel() {
143          return pEngine;          return pEngineChannel;
144      }      }
145    
146      MidiInputDevice::MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {      midi_chan_t SamplerChannel::GetMidiInputChannel() {
147            if (pEngineChannel) this->midiChannel = pEngineChannel->MidiChannel();
148          return this->midiChannel;          return this->midiChannel;
149      }      }
150    
151      int SamplerChannel::GetMidiInputPort() {      int SamplerChannel::GetMidiInputPort() {
152          MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);          MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : NULL;
153          return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);          if (pMidiInputPort) this->iMidiPort = (int) pMidiInputPort->GetPortNumber();
154            return iMidiPort;
155      }      }
156    
157      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
# Line 136  namespace LinuxSampler { Line 159  namespace LinuxSampler {
159      }      }
160    
161      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
162            if (pEngineChannel)
163                pMidiInputDevice = (pEngineChannel->GetMidiInputPort()) ? pEngineChannel->GetMidiInputPort()->GetDevice() : NULL;
164          return pMidiInputDevice;          return pMidiInputDevice;
165      }      }
166    
167      uint SamplerChannel::Index() {      uint SamplerChannel::Index() {
168          if (iIndex >= 0) return iIndex;          if (iIndex >= 0) return iIndex;
169    
170          std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();          Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
171          for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {          for (; iter != pSampler->mSamplerChannels.end(); iter++) {
172              if (*iter == this) {              if (iter->second == this) {
173                  iIndex = i;                  iIndex = iter->first;
174                  return i;                  return iIndex;
175              }              }
176          }          }
177    
178          throw LinuxSamplerException("SamplerChannel index not found");          throw LinuxSamplerException("Internal error: SamplerChannel index not found");
179      }      }
180    
181      MidiInputDevice::MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int MidiPort) {      MidiInputPort* SamplerChannel::__GetMidiInputDevicePort(int iMidiPort) {
182          MidiInputDevice::MidiInputPort *pMidiInputPort = NULL;          MidiInputPort* pMidiInputPort = NULL;
183            MidiInputDevice* pMidiInputDevice = GetMidiInputDevice();
184          if (pMidiInputDevice)          if (pMidiInputDevice)
185              pMidiInputPort = pMidiInputDevice->GetPort(MidiPort);              pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
186          return pMidiInputPort;          return pMidiInputPort;
187      }      }
188    
189    
190    
191      // ******************************************************************      // ******************************************************************
192      // * Sampler      // * Sampler
193    
# Line 167  namespace LinuxSampler { Line 195  namespace LinuxSampler {
195      }      }
196    
197      Sampler::~Sampler() {      Sampler::~Sampler() {
198          // delete sampler channels          Reset();
         {  
             std::vector<SamplerChannel*>::iterator iter = vSamplerChannels.begin();  
             for (; iter != vSamplerChannels.end(); iter++) delete *iter;  
         }  
   
         // delete midi input devices  
         {  
             MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();  
             for (; iter != mMidiInputDevices.end(); iter++) {  
                 MidiInputDevice* pDevice = iter->second;  
                 pDevice->StopListen();  
                 delete pDevice;  
             }  
         }  
   
         // delete audio output devices  
         {  
             AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();  
             for (; iter != mAudioOutputDevices.end(); iter++) {  
                 AudioOutputDevice* pDevice = iter->second;  
                 pDevice->Stop();  
                 delete pDevice;  
             }  
         }  
199      }      }
200    
201      uint Sampler::SamplerChannels() {      uint Sampler::SamplerChannels() {
202          return vSamplerChannels.size();          return mSamplerChannels.size();
203      }      }
204    
205      SamplerChannel* Sampler::AddSamplerChannel() {      SamplerChannel* Sampler::AddSamplerChannel() {
206            // if there's no sampler channel yet
207            if (!mSamplerChannels.size()) {
208                SamplerChannel* pChannel = new SamplerChannel(this);
209                mSamplerChannels[0] = pChannel;
210                LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, 1));
211                return pChannel;
212            }
213    
214            // get the highest used sampler channel index
215            uint lastIndex = (--(mSamplerChannels.end()))->first;
216    
217            // check if we reached the index limit
218            if (lastIndex + 1 < lastIndex) {
219                // search for an unoccupied sampler channel index starting from 0
220                for (uint i = 0; i < lastIndex; i++) {
221                    if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
222                    // we found an unused index, so insert the new channel there
223                    SamplerChannel* pChannel = new SamplerChannel(this);
224                    mSamplerChannels[i] = pChannel;
225                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, i));
226                    return pChannel;
227                }
228                throw LinuxSamplerException("Internal error: could not find unoccupied sampler channel index.");
229            }
230    
231            // we have not reached the index limit so we just add the channel past the highest index
232          SamplerChannel* pChannel = new SamplerChannel(this);          SamplerChannel* pChannel = new SamplerChannel(this);
233          vSamplerChannels.push_back(pChannel);          mSamplerChannels[lastIndex + 1] = pChannel;
234            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, lastIndex + 1));
235          return pChannel;          return pChannel;
236      }      }
237    
238      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
239          if (uiSamplerChannel >= SamplerChannels()) return NULL;          return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
240          return vSamplerChannels[uiSamplerChannel];      }
241    
242        std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
243            return mSamplerChannels;
244      }      }
245    
246      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
247          std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
248          for (; iterChan != vSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
249              if (*iterChan == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
250                  vSamplerChannels.erase(iterChan);                  mSamplerChannels.erase(iterChan);
251                  delete pSamplerChannel;                  delete pSamplerChannel;
252                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, mSamplerChannels.size()));
253                  return;                  return;
254              }              }
255          }          }
# Line 272  namespace LinuxSampler { Line 307  namespace LinuxSampler {
307                  // disable device                  // disable device
308                  pDevice->Stop();                  pDevice->Stop();
309    
                 // remove device from the device list  
                 mAudioOutputDevices.erase(iter);  
   
310                  // destroy and free device from memory                  // destroy and free device from memory
311                  delete pDevice;                  delete pDevice;
312              }              }
313          }          }
314            // remove devices from the device list
315            mAudioOutputDevices.clear();
316      }      }
317    
318      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {
# Line 292  namespace LinuxSampler { Line 326  namespace LinuxSampler {
326                  // disable device                  // disable device
327                  pDevice->StopListen();                  pDevice->StopListen();
328    
                 // remove device from the device list  
                 mMidiInputDevices.erase(iter);  
   
329                  // destroy and free device from memory                  // destroy and free device from memory
330                  delete pDevice;                  delete pDevice;
331              }              }
332          }          }
333            // remove devices from the device list
334            mMidiInputDevices.clear();
335      }      }
336    
337      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
338          // create new device          // create new device
339          MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters);          MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
340    
341          // add new device to the midi device list          // add new device to the midi device list
342          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
# Line 316  namespace LinuxSampler { Line 349  namespace LinuxSampler {
349          return pDevice;          return pDevice;
350      }      }
351    
352        int Sampler::GetVoiceCount() {
353            int count = 0;
354            std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
355    
356            for(; it != EngineFactory::EngineInstances().end(); it++) {
357                count += (*it)->VoiceCount();
358            }
359    
360            return count;
361        }
362    
363        void Sampler::Reset() {
364            // delete sampler channels
365            try {
366                while (true) {
367                        SamplerChannelMap::iterator iter = mSamplerChannels.begin();
368                        if (iter == mSamplerChannels.end()) break;
369                        RemoveSamplerChannel(iter->second);
370                }
371            }
372            catch(...) {
373                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
374                exit(EXIT_FAILURE);
375            }
376    
377            // delete midi input devices
378            try {
379                while (true) {
380                        MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
381                        if (iter == mMidiInputDevices.end()) break;
382                        DestroyMidiInputDevice(iter->second);
383                }
384            }
385            catch(...) {
386                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
387                exit(EXIT_FAILURE);
388            }
389    
390            // delete audio output devices
391            try {
392                while (true) {
393                        AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
394                        if (iter == mAudioOutputDevices.end()) break;
395                        DestroyAudioOutputDevice(iter->second);
396                }
397            }
398            catch(...) {
399                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
400                exit(EXIT_FAILURE);
401            }
402        }
403    
404  } // namespace LinuxSampler  } // namespace LinuxSampler
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