/[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 359 by senkov, Sun Feb 6 21:01:38 2005 UTC
# Line 24  Line 24 
24    
25  #include "Sampler.h"  #include "Sampler.h"
26    
27  #include "audiodriver/AudioOutputDeviceFactory.h"  #include "drivers/audio/AudioOutputDeviceFactory.h"
28  #include "mididriver/MidiInputDeviceAlsa.h"  #include "drivers/midi/MidiInputDeviceFactory.h"
29  #include "engines/gig/Engine.h"  #include "engines/gig/Engine.h"
30    #include "network/lscpserver.h"
31    
32  namespace LinuxSampler {  namespace LinuxSampler {
33    
# Line 38  namespace LinuxSampler { Line 39  namespace LinuxSampler {
39          pEngine            = NULL;          pEngine            = NULL;
40          pMidiInputDevice   = NULL;          pMidiInputDevice   = NULL;
41          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
42            midiPort           = 0;
43            midiChannel        = MidiInputPort::midi_chan_all;
44          iIndex             = -1;          iIndex             = -1;
45      }      }
46    
47      SamplerChannel::~SamplerChannel() {      SamplerChannel::~SamplerChannel() {
48          if (pEngine) {          if (pEngine) {
49              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);              MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
50                if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);
51              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
52              delete pEngine;              delete pEngine;
53          }          }
# Line 62  namespace LinuxSampler { Line 66  namespace LinuxSampler {
66                  throw LinuxSamplerException("Unknown engine type");                  throw LinuxSamplerException("Unknown engine type");
67          }          }
68    
69            // dereference midi input port.
70            MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
71          // disconnect old engine          // disconnect old engine
72          if (pEngine) {          if (pEngine) {
73              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);
74              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
75              delete pEngine;              delete pEngine;
76          }          }
77    
78          // connect new engine          // connect new engine
79          pEngine = pNewEngine;          pEngine = pNewEngine;
80          if (pMidiInputDevice) pMidiInputDevice->Connect(pNewEngine, (MidiInputDevice::midi_chan_t) Index());          if (pMidiInputPort) pMidiInputPort->Connect(pNewEngine, this->midiChannel);
81          if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);          if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);
82          dmsg(2,("OK\n"));          dmsg(2,("OK\n"));
83      }      }
# Line 79  namespace LinuxSampler { Line 85  namespace LinuxSampler {
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 && pEngine) pAudioOutputDevice->Disconnect(pEngine);
   
88          // connect new device          // connect new device
89          pAudioOutputDevice = pDevice;          pAudioOutputDevice = pDevice;
90          if (pEngine) pAudioOutputDevice->Connect(pEngine);          if (pEngine) pAudioOutputDevice->Connect(pEngine);
91      }      }
92    
93      void SamplerChannel::SetMidiInputDevice(MidiInputDevice::type_t MidiType, MidiInputDevice::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
94          // get / create desired midi device         SetMidiInput(pDevice, this->midiPort, this->midiChannel);
95          MidiInputDevice* pDevice = pSampler->GetMidiInputDevice(MidiType);      }
         if (!pDevice) pDevice = pSampler->CreateMidiInputDevice(MidiType);  
96    
97          // disconnect old device      void SamplerChannel::SetMidiInputPort(int MidiPort) {
98          if (pMidiInputDevice && pEngine) pMidiInputDevice->Disconnect(pEngine);         SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);
99        }
100    
101          // connect new device      void SamplerChannel::SetMidiInputChannel(MidiInputPort::midi_chan_t MidiChannel) {
102           SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
103        }
104    
105        void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, MidiInputPort::midi_chan_t MidiChannel) {
106            // dereference old midi input port.
107            MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
108            // disconnect old device port
109            if (pMidiInputPort && pEngine) pMidiInputPort->Disconnect(pEngine);
110            // new device, port and channel
111          pMidiInputDevice = pDevice;          pMidiInputDevice = pDevice;
112          if (pEngine) pMidiInputDevice->Connect(pEngine, MidiChannel);          this->midiPort = iMidiPort;
113            this->midiChannel = MidiChannel;
114            // connect new device port
115            pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
116            if (pMidiInputPort && pEngine) pMidiInputPort->Connect(pEngine, MidiChannel);
117            // Ooops.
118            if (pMidiInputPort == NULL)
119                throw LinuxSamplerException("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
120      }      }
121    
122      Engine* SamplerChannel::GetEngine() {      Engine* SamplerChannel::GetEngine() {
123          return pEngine;          return pEngine;
124      }      }
125    
126      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {      MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {
127          return pMidiInputDevice;          return this->midiChannel;
128        }
129    
130        int SamplerChannel::GetMidiInputPort() {
131            MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
132            return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);
133      }      }
134    
135      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
136          return pAudioOutputDevice;          return pAudioOutputDevice;
137      }      }
138    
139        MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
140            return pMidiInputDevice;
141        }
142    
143      uint SamplerChannel::Index() {      uint SamplerChannel::Index() {
144          if (iIndex >= 0) return iIndex;          if (iIndex >= 0) return iIndex;
145    
146          std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();          Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
147          for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {          for (; iter != pSampler->mSamplerChannels.end(); iter++) {
148              if (*iter == this) {              if (iter->second == this) {
149                  iIndex = i;                  iIndex = iter->first;
150                  return i;                  return iIndex;
151              }              }
152          }          }
153    
154          throw LinuxSamplerException("SamplerChannel index not found");          throw LinuxSamplerException("Internal error: SamplerChannel index not found");
155        }
156    
157        MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int iMidiPort) {
158            MidiInputPort* pMidiInputPort = NULL;
159            if (pMidiInputDevice)
160                pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
161            return pMidiInputPort;
162      }      }
163    
164    
165    
166      // ******************************************************************      // ******************************************************************
167      // * Sampler      // * Sampler
168    
# Line 132  namespace LinuxSampler { Line 170  namespace LinuxSampler {
170      }      }
171    
172      Sampler::~Sampler() {      Sampler::~Sampler() {
173          // 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;  
             }  
         }  
174      }      }
175    
176      uint Sampler::SamplerChannels() {      uint Sampler::SamplerChannels() {
177          return vSamplerChannels.size();          return mSamplerChannels.size();
178      }      }
179    
180      SamplerChannel* Sampler::AddSamplerChannel() {      SamplerChannel* Sampler::AddSamplerChannel() {
181            // if there's no sampler channel yet
182            if (!mSamplerChannels.size()) {
183                SamplerChannel* pChannel = new SamplerChannel(this);
184                mSamplerChannels[0] = pChannel;
185                LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, 1));
186                return pChannel;
187            }
188    
189            // get the highest used sampler channel index
190            uint lastIndex = (--(mSamplerChannels.end()))->first;
191    
192            // check if we reached the index limit
193            if (lastIndex + 1 < lastIndex) {
194                // search for an unoccupied sampler channel index starting from 0
195                for (uint i = 0; i < lastIndex; i++) {
196                    if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
197                    // we found an unused index, so insert the new channel there
198                    SamplerChannel* pChannel = new SamplerChannel(this);
199                    mSamplerChannels[i] = pChannel;
200                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, i));
201                    return pChannel;
202                }
203                throw LinuxSamplerException("Internal error: could not find unoccupied sampler channel index.");
204            }
205    
206            // we have not reached the index limit so we just add the channel past the highest index
207          SamplerChannel* pChannel = new SamplerChannel(this);          SamplerChannel* pChannel = new SamplerChannel(this);
208          vSamplerChannels.push_back(pChannel);          mSamplerChannels[lastIndex + 1] = pChannel;
209            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, lastIndex + 1));
210          return pChannel;          return pChannel;
211      }      }
212    
213      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
214          if (uiSamplerChannel >= SamplerChannels()) return NULL;          return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
215          return vSamplerChannels[uiSamplerChannel];      }
216    
217        std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
218            return mSamplerChannels;
219      }      }
220    
221      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
222          std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
223          for (; iterChan != vSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
224              if (*iterChan == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
225                  vSamplerChannels.erase(iterChan);                  mSamplerChannels.erase(iterChan);
226                  delete pSamplerChannel;                  delete pSamplerChannel;
227                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_channels, mSamplerChannels.size()));
228                  return;                  return;
229              }              }
230          }          }
# Line 199  namespace LinuxSampler { Line 244  namespace LinuxSampler {
244          // create new device          // create new device
245          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
246    
         // activate device  
         pDevice->Play();  
   
247          // add new audio device to the audio device list          // add new audio device to the audio device list
248          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
249              if (!mAudioOutputDevices[i]) {              if (!mAudioOutputDevices[i]) {
# Line 217  namespace LinuxSampler { Line 259  namespace LinuxSampler {
259          return mAudioOutputDevices.size();          return mAudioOutputDevices.size();
260      }      }
261    
262        uint Sampler::MidiInputDevices() {
263            return mMidiInputDevices.size();
264        }
265    
266      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
267          return mAudioOutputDevices;          return mAudioOutputDevices;
268      }      }
269    
270        std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
271            return mMidiInputDevices;
272        }
273    
274      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {
275          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
276          for (; iter != mAudioOutputDevices.end(); iter++) {          for (; iter != mAudioOutputDevices.end(); iter++) {
# Line 241  namespace LinuxSampler { Line 291  namespace LinuxSampler {
291          }          }
292      }      }
293    
294      MidiInputDevice* Sampler::CreateMidiInputDevice(MidiInputDevice::type_t MidiType) {      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {
295          // check if device already created          MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
296          MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);          for (; iter != mMidiInputDevices.end(); iter++) {
297          if (pDevice) return pDevice;              if (iter->second == pDevice) {
298                    // check if there are still sampler engines connected to this device
299                    for (uint i = 0; i < SamplerChannels(); i++)
300                        if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
301    
302                    // disable device
303                    pDevice->StopListen();
304    
305          // create new device                  // remove device from the device list
306          switch (MidiType) {                  mMidiInputDevices.erase(iter);
307              case MidiInputDevice::type_alsa:  
308                  pDevice = new MidiInputDeviceAlsa;                  // destroy and free device from memory
309                  break;                  delete pDevice;
310              default:              }
                 throw LinuxSamplerException("Unknown audio output device type");  
311          }          }
312        }
313    
314          // activate device      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
315          pDevice->Listen();          // create new device
316            MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters);
317    
318          // add new MIDI device to the MIDI device list          // add new device to the midi device list
319          MidiInputDevices[MidiType] = pDevice;          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
320                    if (!mMidiInputDevices[i]) {
321                            mMidiInputDevices[i] = pDevice;
322                            break;
323                    }
324            }
325    
326          return pDevice;          return pDevice;
327      }      }
328    
329      MidiInputDevice* Sampler::GetMidiInputDevice(MidiInputDevice::type_t MidiType) {      void Sampler::Reset() {
330          MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);          // delete sampler channels
331          return (iter != MidiInputDevices.end()) ? iter->second : NULL;          try {
332                while (true) {
333                        SamplerChannelMap::iterator iter = mSamplerChannels.begin();
334                        if (iter == mSamplerChannels.end()) break;
335                        RemoveSamplerChannel(iter->second);
336                }
337            }
338            catch(...) {
339                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
340                exit(EXIT_FAILURE);
341            }
342    
343            // delete midi input devices
344            try {
345                while (true) {
346                        MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
347                        if (iter == mMidiInputDevices.end()) break;
348                        DestroyMidiInputDevice(iter->second);
349                }
350            }
351            catch(...) {
352                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
353                exit(EXIT_FAILURE);
354            }
355    
356            // delete audio output devices
357            try {
358                while (true) {
359                        AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
360                        if (iter == mAudioOutputDevices.end()) break;
361                        DestroyAudioOutputDevice(iter->second);
362                }
363            }
364            catch(...) {
365                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
366                exit(EXIT_FAILURE);
367            }
368      }      }
369    
370  } // namespace LinuxSampler  } // namespace LinuxSampler
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