/[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 660 by schoenebeck, Fri Jun 17 19:49:30 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                    EngineChannelFactory::Destroy(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            //FIXME: hack to allow fast retrieval of engine channel's sampler channel index
67            pNewEngineChannel->iSamplerChannelIndex = Index();
68    
69            // dereference midi input port.
70            MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
71          // disconnect old engine          // disconnect old engine
72          if (pEngine) {          if (pEngineChannel) {
73              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
74              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
75              delete pEngine;              EngineChannelFactory::Destroy(pEngineChannel);
76          }          }
77    
78          // connect new engine          // connect new engine channel
79          pEngine = pNewEngine;          pEngineChannel = pNewEngineChannel;
80          if (pMidiInputDevice) pMidiInputDevice->Connect(pNewEngine, (MidiInputDevice::midi_chan_t) Index());          if (pMidiInputPort) pMidiInputPort->Connect(pNewEngineChannel, this->midiChannel);
81          if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);          if (pAudioOutputDevice) {
82                pNewEngineChannel->Connect(pAudioOutputDevice);
83                pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
84            }
85          dmsg(2,("OK\n"));          dmsg(2,("OK\n"));
86      }      }
87    
88      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
89          // disconnect old device          // disconnect old device
90          if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);          if (pAudioOutputDevice && pEngineChannel) pEngineChannel->DisconnectAudioOutputDevice();
   
91          // connect new device          // connect new device
92          pAudioOutputDevice = pDevice;          pAudioOutputDevice = pDevice;
93          if (pEngine) pAudioOutputDevice->Connect(pEngine);          if (pEngineChannel) {
94                pEngineChannel->Connect(pAudioOutputDevice);
95                pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
96            }
97      }      }
98    
99      void SamplerChannel::SetMidiInputDevice(MidiInputDevice::type_t MidiType, MidiInputDevice::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
100          // get / create desired midi device         SetMidiInput(pDevice, this->midiPort, this->midiChannel);
101          MidiInputDevice* pDevice = pSampler->GetMidiInputDevice(MidiType);      }
         if (!pDevice) pDevice = pSampler->CreateMidiInputDevice(MidiType);  
102    
103          // disconnect old device      void SamplerChannel::SetMidiInputPort(int MidiPort) {
104          if (pMidiInputDevice && pEngine) pMidiInputDevice->Disconnect(pEngine);         SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);
105        }
106    
107          // connect new device      void SamplerChannel::SetMidiInputChannel(MidiInputPort::midi_chan_t MidiChannel) {
108           SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
109        }
110    
111        void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, MidiInputPort::midi_chan_t MidiChannel) {
112            // dereference old midi input port.
113            MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
114            // disconnect old device port
115            if (pMidiInputPort && pEngineChannel) pMidiInputPort->Disconnect(pEngineChannel);
116            // new device, port and channel
117          pMidiInputDevice = pDevice;          pMidiInputDevice = pDevice;
118          if (pEngine) pMidiInputDevice->Connect(pEngine, MidiChannel);          this->midiPort = iMidiPort;
119            this->midiChannel = MidiChannel;
120            // connect new device port
121            pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
122            if (pMidiInputPort && pEngineChannel) pMidiInputPort->Connect(pEngineChannel, MidiChannel);
123            // Ooops.
124            if (pMidiInputPort == NULL)
125                throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
126      }      }
127    
128      Engine* SamplerChannel::GetEngine() {      EngineChannel* SamplerChannel::GetEngineChannel() {
129          return pEngine;          return pEngineChannel;
130      }      }
131    
132      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {      MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {
133          return pMidiInputDevice;          return this->midiChannel;
134        }
135    
136        int SamplerChannel::GetMidiInputPort() {
137            MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
138            return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);
139      }      }
140    
141      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
142          return pAudioOutputDevice;          return pAudioOutputDevice;
143      }      }
144    
145        MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
146            return pMidiInputDevice;
147        }
148    
149      uint SamplerChannel::Index() {      uint SamplerChannel::Index() {
150          if (iIndex >= 0) return iIndex;          if (iIndex >= 0) return iIndex;
151    
152          std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();          Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
153          for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {          for (; iter != pSampler->mSamplerChannels.end(); iter++) {
154              if (*iter == this) {              if (iter->second == this) {
155                  iIndex = i;                  iIndex = iter->first;
156                  return i;                  return iIndex;
157              }              }
158          }          }
159    
160          throw LinuxSamplerException("SamplerChannel index not found");          throw LinuxSamplerException("Internal error: SamplerChannel index not found");
161        }
162    
163        MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int iMidiPort) {
164            MidiInputPort* pMidiInputPort = NULL;
165            if (pMidiInputDevice)
166                pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
167            return pMidiInputPort;
168      }      }
169    
170    
171    
172      // ******************************************************************      // ******************************************************************
173      // * Sampler      // * Sampler
174    
# Line 132  namespace LinuxSampler { Line 176  namespace LinuxSampler {
176      }      }
177    
178      Sampler::~Sampler() {      Sampler::~Sampler() {
179          // 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;  
             }  
         }  
180      }      }
181    
182      uint Sampler::SamplerChannels() {      uint Sampler::SamplerChannels() {
183          return vSamplerChannels.size();          return mSamplerChannels.size();
184      }      }
185    
186      SamplerChannel* Sampler::AddSamplerChannel() {      SamplerChannel* Sampler::AddSamplerChannel() {
187            // if there's no sampler channel yet
188            if (!mSamplerChannels.size()) {
189                SamplerChannel* pChannel = new SamplerChannel(this);
190                mSamplerChannels[0] = pChannel;
191                LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, 1));
192                return pChannel;
193            }
194    
195            // get the highest used sampler channel index
196            uint lastIndex = (--(mSamplerChannels.end()))->first;
197    
198            // check if we reached the index limit
199            if (lastIndex + 1 < lastIndex) {
200                // search for an unoccupied sampler channel index starting from 0
201                for (uint i = 0; i < lastIndex; i++) {
202                    if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
203                    // we found an unused index, so insert the new channel there
204                    SamplerChannel* pChannel = new SamplerChannel(this);
205                    mSamplerChannels[i] = pChannel;
206                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, i));
207                    return pChannel;
208                }
209                throw LinuxSamplerException("Internal error: could not find unoccupied sampler channel index.");
210            }
211    
212            // we have not reached the index limit so we just add the channel past the highest index
213          SamplerChannel* pChannel = new SamplerChannel(this);          SamplerChannel* pChannel = new SamplerChannel(this);
214          vSamplerChannels.push_back(pChannel);          mSamplerChannels[lastIndex + 1] = pChannel;
215            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, lastIndex + 1));
216          return pChannel;          return pChannel;
217      }      }
218    
219      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
220          if (uiSamplerChannel >= SamplerChannels()) return NULL;          return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
221          return vSamplerChannels[uiSamplerChannel];      }
222    
223        std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
224            return mSamplerChannels;
225      }      }
226    
227      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
228          std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
229          for (; iterChan != vSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
230              if (*iterChan == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
231                  vSamplerChannels.erase(iterChan);                  mSamplerChannels.erase(iterChan);
232                  delete pSamplerChannel;                  delete pSamplerChannel;
233                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_count, mSamplerChannels.size()));
234                  return;                  return;
235              }              }
236          }          }
# Line 199  namespace LinuxSampler { Line 250  namespace LinuxSampler {
250          // create new device          // create new device
251          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
252    
         // activate device  
         pDevice->Play();  
   
253          // add new audio device to the audio device list          // add new audio device to the audio device list
254          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
255              if (!mAudioOutputDevices[i]) {              if (!mAudioOutputDevices[i]) {
# Line 217  namespace LinuxSampler { Line 265  namespace LinuxSampler {
265          return mAudioOutputDevices.size();          return mAudioOutputDevices.size();
266      }      }
267    
268        uint Sampler::MidiInputDevices() {
269            return mMidiInputDevices.size();
270        }
271    
272      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
273          return mAudioOutputDevices;          return mAudioOutputDevices;
274      }      }
275    
276        std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
277            return mMidiInputDevices;
278        }
279    
280      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {
281          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
282          for (; iter != mAudioOutputDevices.end(); iter++) {          for (; iter != mAudioOutputDevices.end(); iter++) {
# Line 241  namespace LinuxSampler { Line 297  namespace LinuxSampler {
297          }          }
298      }      }
299    
300      MidiInputDevice* Sampler::CreateMidiInputDevice(MidiInputDevice::type_t MidiType) {      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {
301          // check if device already created          MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
302          MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);          for (; iter != mMidiInputDevices.end(); iter++) {
303          if (pDevice) return pDevice;              if (iter->second == pDevice) {
304                    // check if there are still sampler engines connected to this device
305                    for (uint i = 0; i < SamplerChannels(); i++)
306                        if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
307    
308          // create new device                  // disable device
309          switch (MidiType) {                  pDevice->StopListen();
310              case MidiInputDevice::type_alsa:  
311                  pDevice = new MidiInputDeviceAlsa;                  // remove device from the device list
312                  break;                  mMidiInputDevices.erase(iter);
313              default:  
314                  throw LinuxSamplerException("Unknown audio output device type");                  // destroy and free device from memory
315                    delete pDevice;
316                }
317          }          }
318        }
319    
320          // activate device      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
321          pDevice->Listen();          // create new device
322            MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
323    
324          // add new MIDI device to the MIDI device list          // add new device to the midi device list
325          MidiInputDevices[MidiType] = pDevice;          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
326                    if (!mMidiInputDevices[i]) {
327                            mMidiInputDevices[i] = pDevice;
328                            break;
329                    }
330            }
331    
332          return pDevice;          return pDevice;
333      }      }
334    
335      MidiInputDevice* Sampler::GetMidiInputDevice(MidiInputDevice::type_t MidiType) {      void Sampler::Reset() {
336          MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);          // delete sampler channels
337          return (iter != MidiInputDevices.end()) ? iter->second : NULL;          try {
338                while (true) {
339                        SamplerChannelMap::iterator iter = mSamplerChannels.begin();
340                        if (iter == mSamplerChannels.end()) break;
341                        RemoveSamplerChannel(iter->second);
342                }
343            }
344            catch(...) {
345                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
346                exit(EXIT_FAILURE);
347            }
348    
349            // delete midi input devices
350            try {
351                while (true) {
352                        MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
353                        if (iter == mMidiInputDevices.end()) break;
354                        DestroyMidiInputDevice(iter->second);
355                }
356            }
357            catch(...) {
358                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
359                exit(EXIT_FAILURE);
360            }
361    
362            // delete audio output devices
363            try {
364                while (true) {
365                        AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
366                        if (iter == mAudioOutputDevices.end()) break;
367                        DestroyAudioOutputDevice(iter->second);
368                }
369            }
370            catch(...) {
371                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
372                exit(EXIT_FAILURE);
373            }
374      }      }
375    
376  } // namespace LinuxSampler  } // namespace LinuxSampler
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