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

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revision 123 by schoenebeck, Mon Jun 14 19:33:16 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/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 "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            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);              MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : __GetMidiInputDevicePort(GetMidiInputChannel());
52              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
53              delete pEngine;              if (pEngineChannel) {
54                    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();
69              default:  
70                  throw LinuxSamplerException("Unknown engine type");          // dereference midi input port.
71          }          MidiInputPort* pMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
72            // disconnect old engine channel
73            if (pEngineChannel) {
74                if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
75                if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
76                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          // disconnect old engine          pEngineChannel->StatusChanged(true);
         if (pEngine) {  
             if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);  
             if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);  
             delete pEngine;  
         }  
92    
         // connect new engine  
         pEngine = pNewEngine;  
         if (pMidiInputDevice) pMidiInputDevice->Connect(pNewEngine, (MidiInputDevice::midi_chan_t) Index());  
         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::type_t MidiType, MidiInputDevice::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
108          // get / create desired midi device         SetMidiInput(pDevice, 0, GetMidiInputChannel());
109          MidiInputDevice* pDevice = pSampler->GetMidiInputDevice(MidiType);      }
         if (!pDevice) pDevice = pSampler->CreateMidiInputDevice(MidiType);  
110    
111          // disconnect old device      void SamplerChannel::SetMidiInputPort(int MidiPort) {
112          if (pMidiInputDevice && pEngine) pMidiInputDevice->Disconnect(pEngine);         SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());
113        }
114    
115          // connect new device      void SamplerChannel::SetMidiInputChannel(midi_chan_t MidiChannel) {
116          pMidiInputDevice = pDevice;         SetMidiInput(GetMidiInputDevice(), GetMidiInputPort(), MidiChannel);
         if (pEngine) pMidiInputDevice->Connect(pEngine, MidiChannel);  
117      }      }
118    
119      Engine* SamplerChannel::GetEngine() {      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) {
120          return pEngine;          if (!pDevice) throw LinuxSamplerException("No MIDI input device assigned.");
121    
122            // get old and new midi input port
123            MidiInputPort* pOldMidiInputPort = __GetMidiInputDevicePort(GetMidiInputPort());
124            MidiInputPort* pNewMidiInputPort = pDevice->GetPort(iMidiPort);
125    
126            // disconnect old device port
127            if (pOldMidiInputPort && pEngineChannel) pOldMidiInputPort->Disconnect(pEngineChannel);
128            // remember new device, port and channel if not engine channel yet created
129            if (!pEngineChannel) {
130                this->pMidiInputDevice = pDevice;
131                this->iMidiPort        = iMidiPort;
132                this->midiChannel      = MidiChannel;
133            }
134    
135            // connect new device port
136            if (pNewMidiInputPort && pEngineChannel) pNewMidiInputPort->Connect(pEngineChannel, MidiChannel);
137            // Ooops.
138            if (pNewMidiInputPort == NULL)
139                throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
140      }      }
141    
142      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {      EngineChannel* SamplerChannel::GetEngineChannel() {
143          return pMidiInputDevice;          return pEngineChannel;
144        }
145    
146        midi_chan_t SamplerChannel::GetMidiInputChannel() {
147            if (pEngineChannel) this->midiChannel = pEngineChannel->MidiChannel();
148            return this->midiChannel;
149        }
150    
151        int SamplerChannel::GetMidiInputPort() {
152            MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort() : NULL;
153            if (pMidiInputPort) this->iMidiPort = (int) pMidiInputPort->GetPortNumber();
154            return iMidiPort;
155      }      }
156    
157      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
158          return pAudioOutputDevice;          return pAudioOutputDevice;
159      }      }
160    
161        MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
162            if (pEngineChannel)
163                pMidiInputDevice = (pEngineChannel->GetMidiInputPort()) ? pEngineChannel->GetMidiInputPort()->GetDevice() : NULL;
164            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        MidiInputPort* SamplerChannel::__GetMidiInputDevicePort(int iMidiPort) {
182            MidiInputPort* pMidiInputPort = NULL;
183            MidiInputDevice* pMidiInputDevice = GetMidiInputDevice();
184            if (pMidiInputDevice)
185                pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
186            return pMidiInputPort;
187      }      }
188    
189    
190    
191      // ******************************************************************      // ******************************************************************
192      // * Sampler      // * Sampler
193    
# Line 132  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 = MidiInputDevices.begin();  
             for (; iter != MidiInputDevices.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 199  namespace LinuxSampler { Line 269  namespace LinuxSampler {
269          // create new device          // create new device
270          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
271    
         // activate device  
         pDevice->Play();  
   
272          // add new audio device to the audio device list          // add new audio device to the audio device list
273          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
274              if (!mAudioOutputDevices[i]) {              if (!mAudioOutputDevices[i]) {
# Line 217  namespace LinuxSampler { Line 284  namespace LinuxSampler {
284          return mAudioOutputDevices.size();          return mAudioOutputDevices.size();
285      }      }
286    
287        uint Sampler::MidiInputDevices() {
288            return mMidiInputDevices.size();
289        }
290    
291      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
292          return mAudioOutputDevices;          return mAudioOutputDevices;
293      }      }
294    
295        std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
296            return mMidiInputDevices;
297        }
298    
299      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {
300          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
301          for (; iter != mAudioOutputDevices.end(); iter++) {          for (; iter != mAudioOutputDevices.end(); iter++) {
# Line 232  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      MidiInputDevice* Sampler::CreateMidiInputDevice(MidiInputDevice::type_t MidiType) {      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {
319          // check if device already created          MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
320          MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);          for (; iter != mMidiInputDevices.end(); iter++) {
321          if (pDevice) return pDevice;              if (iter->second == pDevice) {
322                    // check if there are still sampler engines connected to this device
323                    for (uint i = 0; i < SamplerChannels(); i++)
324                        if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
325    
326          // create new device                  // disable device
327          switch (MidiType) {                  pDevice->StopListen();
328              case MidiInputDevice::type_alsa:  
329                  pDevice = new MidiInputDeviceAlsa;                  // destroy and free device from memory
330                  break;                  delete pDevice;
331              default:              }
                 throw LinuxSamplerException("Unknown audio output device type");  
332          }          }
333            // remove devices from the device list
334            mMidiInputDevices.clear();
335        }
336    
337          // activate device      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
338          pDevice->Listen();          // create new device
339            MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
340    
341          // add new MIDI device to the MIDI device list          // add new device to the midi device list
342          MidiInputDevices[MidiType] = pDevice;          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
343                    if (!mMidiInputDevices[i]) {
344                            mMidiInputDevices[i] = pDevice;
345                            break;
346                    }
347            }
348    
349          return pDevice;          return pDevice;
350      }      }
351    
352      MidiInputDevice* Sampler::GetMidiInputDevice(MidiInputDevice::type_t MidiType) {      int Sampler::GetVoiceCount() {
353          MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);          int count = 0;
354          return (iter != MidiInputDevices.end()) ? iter->second : NULL;          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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