/[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 556 by schoenebeck, Sat May 21 01:10:12 2005 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/EngineChannelFactory.h"
29  #include "mididriver/MidiInputDeviceAlsa.h"  #include "drivers/audio/AudioOutputDeviceFactory.h"
30  #include "engines/gig/Engine.h"  #include "drivers/midi/MidiInputDeviceFactory.h"
31    #include "network/lscpserver.h"
32    
33  namespace LinuxSampler {  namespace LinuxSampler {
34    
# Line 35  namespace LinuxSampler { Line 37  namespace LinuxSampler {
37    
38      SamplerChannel::SamplerChannel(Sampler* pS) {      SamplerChannel::SamplerChannel(Sampler* pS) {
39          pSampler           = pS;          pSampler           = pS;
40          pEngine            = NULL;          pEngineChannel     = NULL;
41          pMidiInputDevice   = NULL;          pMidiInputDevice   = NULL;
42          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
43            midiPort           = 0;
44            midiChannel        = MidiInputPort::midi_chan_all;
45          iIndex             = -1;          iIndex             = -1;
46      }      }
47    
48      SamplerChannel::~SamplerChannel() {      SamplerChannel::~SamplerChannel() {
49          if (pEngine) {          if (pEngineChannel) {
50              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);              MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
51              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
52              delete pEngine;              if (pEngineChannel) {
53                    if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
54                    delete pEngineChannel;
55                }
56          }          }
57      }      }
58    
59      void SamplerChannel::LoadEngine(Engine::type_t EngineType) {      void SamplerChannel::SetEngineType(String EngineType) throw (LinuxSamplerException) {
60          dmsg(2,("SamplerChannel: Loading engine..."));          dmsg(2,("SamplerChannel: Assigning engine type..."));
61    
62          // create new engine          // create new engine channel
63          Engine* pNewEngine = NULL;          EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
64          switch (EngineType) {          if (!pNewEngineChannel) throw LinuxSamplerException("Unknown engine type");
             case Engine::type_gig:  
                 pNewEngine = new gig::Engine;  
                 break;  
             default:  
                 throw LinuxSamplerException("Unknown engine type");  
         }  
65    
66            // dereference midi input port.
67            MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
68          // disconnect old engine          // disconnect old engine
69          if (pEngine) {          if (pEngineChannel) {
70              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
71              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
72              delete pEngine;              delete pEngineChannel;
73          }          }
74    
75          // connect new engine          // connect new engine channel
76          pEngine = pNewEngine;          pEngineChannel = pNewEngineChannel;
77          if (pMidiInputDevice) pMidiInputDevice->Connect(pNewEngine, (MidiInputDevice::midi_chan_t) Index());          if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, this->midiChannel);
78          if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);          if (pAudioOutputDevice) {
79                pNewEngineChannel->Connect(pAudioOutputDevice);
80                pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
81            }
82          dmsg(2,("OK\n"));          dmsg(2,("OK\n"));
83      }      }
84    
85      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
86          // disconnect old device          // disconnect old device
87          if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);          if (pAudioOutputDevice && pEngineChannel) pEngineChannel->DisconnectAudioOutputDevice();
   
88          // connect new device          // connect new device
89          pAudioOutputDevice = pDevice;          pAudioOutputDevice = pDevice;
90          if (pEngine) pAudioOutputDevice->Connect(pEngine);          if (pEngineChannel) {
91                pEngineChannel->Connect(pAudioOutputDevice);
92                pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
93            }
94      }      }
95    
96      void SamplerChannel::SetMidiInputDevice(MidiInputDevice::type_t MidiType, MidiInputDevice::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
97          // get / create desired midi device         SetMidiInput(pDevice, this->midiPort, this->midiChannel);
98          MidiInputDevice* pDevice = pSampler->GetMidiInputDevice(MidiType);      }
         if (!pDevice) pDevice = pSampler->CreateMidiInputDevice(MidiType);  
99    
100          // disconnect old device      void SamplerChannel::SetMidiInputPort(int MidiPort) {
101          if (pMidiInputDevice && pEngine) pMidiInputDevice->Disconnect(pEngine);         SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);
102        }
103    
104          // connect new device      void SamplerChannel::SetMidiInputChannel(MidiInputPort::midi_chan_t MidiChannel) {
105           SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
106        }
107    
108        void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, MidiInputPort::midi_chan_t MidiChannel) {
109            // dereference old midi input port.
110            MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
111            // disconnect old device port
112            if (pMidiInputPort && pEngineChannel) pMidiInputPort->Disconnect(pEngineChannel);
113            // new device, port and channel
114          pMidiInputDevice = pDevice;          pMidiInputDevice = pDevice;
115          if (pEngine) pMidiInputDevice->Connect(pEngine, MidiChannel);          this->midiPort = iMidiPort;
116            this->midiChannel = MidiChannel;
117            // connect new device port
118            pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
119            if (pMidiInputPort && pEngineChannel) pMidiInputPort->Connect(pEngineChannel, MidiChannel);
120            // Ooops.
121            if (pMidiInputPort == NULL)
122                throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
123      }      }
124    
125      Engine* SamplerChannel::GetEngine() {      EngineChannel* SamplerChannel::GetEngineChannel() {
126          return pEngine;          return pEngineChannel;
127      }      }
128    
129      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {      MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {
130          return pMidiInputDevice;          return this->midiChannel;
131        }
132    
133        int SamplerChannel::GetMidiInputPort() {
134            MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
135            return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);
136      }      }
137    
138      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
139          return pAudioOutputDevice;          return pAudioOutputDevice;
140      }      }
141    
142        MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
143            return pMidiInputDevice;
144        }
145    
146      uint SamplerChannel::Index() {      uint SamplerChannel::Index() {
147          if (iIndex >= 0) return iIndex;          if (iIndex >= 0) return iIndex;
148    
149          std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();          Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
150          for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {          for (; iter != pSampler->mSamplerChannels.end(); iter++) {
151              if (*iter == this) {              if (iter->second == this) {
152                  iIndex = i;                  iIndex = iter->first;
153                  return i;                  return iIndex;
154              }              }
155          }          }
156    
157          throw LinuxSamplerException("SamplerChannel index not found");          throw LinuxSamplerException("Internal error: SamplerChannel index not found");
158        }
159    
160        MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int iMidiPort) {
161            MidiInputPort* pMidiInputPort = NULL;
162            if (pMidiInputDevice)
163                pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
164            return pMidiInputPort;
165      }      }
166    
167    
168    
169      // ******************************************************************      // ******************************************************************
170      // * Sampler      // * Sampler
171    
# Line 132  namespace LinuxSampler { Line 173  namespace LinuxSampler {
173      }      }
174    
175      Sampler::~Sampler() {      Sampler::~Sampler() {
176          // 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;  
             }  
         }  
177      }      }
178    
179      uint Sampler::SamplerChannels() {      uint Sampler::SamplerChannels() {
180          return vSamplerChannels.size();          return mSamplerChannels.size();
181      }      }
182    
183      SamplerChannel* Sampler::AddSamplerChannel() {      SamplerChannel* Sampler::AddSamplerChannel() {
184            // if there's no sampler channel yet
185            if (!mSamplerChannels.size()) {
186                SamplerChannel* pChannel = new SamplerChannel(this);
187                mSamplerChannels[0] = pChannel;
188                LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, 1));
189                return pChannel;
190            }
191    
192            // get the highest used sampler channel index
193            uint lastIndex = (--(mSamplerChannels.end()))->first;
194    
195            // check if we reached the index limit
196            if (lastIndex + 1 < lastIndex) {
197                // search for an unoccupied sampler channel index starting from 0
198                for (uint i = 0; i < lastIndex; i++) {
199                    if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
200                    // we found an unused index, so insert the new channel there
201                    SamplerChannel* pChannel = new SamplerChannel(this);
202                    mSamplerChannels[i] = pChannel;
203                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, i));
204                    return pChannel;
205                }
206                throw LinuxSamplerException("Internal error: could not find unoccupied sampler channel index.");
207            }
208    
209            // we have not reached the index limit so we just add the channel past the highest index
210          SamplerChannel* pChannel = new SamplerChannel(this);          SamplerChannel* pChannel = new SamplerChannel(this);
211          vSamplerChannels.push_back(pChannel);          mSamplerChannels[lastIndex + 1] = pChannel;
212            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, lastIndex + 1));
213          return pChannel;          return pChannel;
214      }      }
215    
216      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
217          if (uiSamplerChannel >= SamplerChannels()) return NULL;          return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
218          return vSamplerChannels[uiSamplerChannel];      }
219    
220        std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
221            return mSamplerChannels;
222      }      }
223    
224      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
225          std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
226          for (; iterChan != vSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
227              if (*iterChan == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
228                  vSamplerChannels.erase(iterChan);                  mSamplerChannels.erase(iterChan);
229                  delete pSamplerChannel;                  delete pSamplerChannel;
230                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, mSamplerChannels.size()));
231                  return;                  return;
232              }              }
233          }          }
# Line 199  namespace LinuxSampler { Line 247  namespace LinuxSampler {
247          // create new device          // create new device
248          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
249    
         // activate device  
         pDevice->Play();  
   
250          // add new audio device to the audio device list          // add new audio device to the audio device list
251          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
252              if (!mAudioOutputDevices[i]) {              if (!mAudioOutputDevices[i]) {
# Line 217  namespace LinuxSampler { Line 262  namespace LinuxSampler {
262          return mAudioOutputDevices.size();          return mAudioOutputDevices.size();
263      }      }
264    
265        uint Sampler::MidiInputDevices() {
266            return mMidiInputDevices.size();
267        }
268    
269      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
270          return mAudioOutputDevices;          return mAudioOutputDevices;
271      }      }
272    
273        std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
274            return mMidiInputDevices;
275        }
276    
277      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {
278          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
279          for (; iter != mAudioOutputDevices.end(); iter++) {          for (; iter != mAudioOutputDevices.end(); iter++) {
# Line 241  namespace LinuxSampler { Line 294  namespace LinuxSampler {
294          }          }
295      }      }
296    
297      MidiInputDevice* Sampler::CreateMidiInputDevice(MidiInputDevice::type_t MidiType) {      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {
298          // check if device already created          MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
299          MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);          for (; iter != mMidiInputDevices.end(); iter++) {
300          if (pDevice) return pDevice;              if (iter->second == pDevice) {
301                    // check if there are still sampler engines connected to this device
302                    for (uint i = 0; i < SamplerChannels(); i++)
303                        if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
304    
305          // create new device                  // disable device
306          switch (MidiType) {                  pDevice->StopListen();
307              case MidiInputDevice::type_alsa:  
308                  pDevice = new MidiInputDeviceAlsa;                  // remove device from the device list
309                  break;                  mMidiInputDevices.erase(iter);
310              default:  
311                  throw LinuxSamplerException("Unknown audio output device type");                  // destroy and free device from memory
312                    delete pDevice;
313                }
314          }          }
315        }
316    
317          // activate device      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
318          pDevice->Listen();          // create new device
319            MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
320    
321          // add new MIDI device to the MIDI device list          // add new device to the midi device list
322          MidiInputDevices[MidiType] = pDevice;          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
323                    if (!mMidiInputDevices[i]) {
324                            mMidiInputDevices[i] = pDevice;
325                            break;
326                    }
327            }
328    
329          return pDevice;          return pDevice;
330      }      }
331    
332      MidiInputDevice* Sampler::GetMidiInputDevice(MidiInputDevice::type_t MidiType) {      void Sampler::Reset() {
333          MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);          // delete sampler channels
334          return (iter != MidiInputDevices.end()) ? iter->second : NULL;          try {
335                while (true) {
336                        SamplerChannelMap::iterator iter = mSamplerChannels.begin();
337                        if (iter == mSamplerChannels.end()) break;
338                        RemoveSamplerChannel(iter->second);
339                }
340            }
341            catch(...) {
342                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
343                exit(EXIT_FAILURE);
344            }
345    
346            // delete midi input devices
347            try {
348                while (true) {
349                        MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
350                        if (iter == mMidiInputDevices.end()) break;
351                        DestroyMidiInputDevice(iter->second);
352                }
353            }
354            catch(...) {
355                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
356                exit(EXIT_FAILURE);
357            }
358    
359            // delete audio output devices
360            try {
361                while (true) {
362                        AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
363                        if (iter == mAudioOutputDevices.end()) break;
364                        DestroyAudioOutputDevice(iter->second);
365                }
366            }
367            catch(...) {
368                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
369                exit(EXIT_FAILURE);
370            }
371      }      }
372    
373  } // namespace LinuxSampler  } // namespace LinuxSampler
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