/[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 212 by schoenebeck, Wed Jul 28 14:17:29 2004 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    
31  namespace LinuxSampler {  namespace LinuxSampler {
# Line 38  namespace LinuxSampler { Line 38  namespace LinuxSampler {
38          pEngine            = NULL;          pEngine            = NULL;
39          pMidiInputDevice   = NULL;          pMidiInputDevice   = NULL;
40          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
41            midiPort           = 0;
42            midiChannel        = MidiInputDevice::MidiInputPort::midi_chan_all;
43          iIndex             = -1;          iIndex             = -1;
44      }      }
45    
46      SamplerChannel::~SamplerChannel() {      SamplerChannel::~SamplerChannel() {
47          if (pEngine) {          if (pEngine) {
48              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);              MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
49                if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);
50              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
51              delete pEngine;              delete pEngine;
52          }          }
# Line 62  namespace LinuxSampler { Line 65  namespace LinuxSampler {
65                  throw LinuxSamplerException("Unknown engine type");                  throw LinuxSamplerException("Unknown engine type");
66          }          }
67    
68            // dereference midi input port.
69            MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
70          // disconnect old engine          // disconnect old engine
71          if (pEngine) {          if (pEngine) {
72              if (pMidiInputDevice) pMidiInputDevice->Disconnect(pEngine);              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);
73              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);
74              delete pEngine;              delete pEngine;
75          }          }
76    
77          // connect new engine          // connect new engine
78          pEngine = pNewEngine;          pEngine = pNewEngine;
79          if (pMidiInputDevice) pMidiInputDevice->Connect(pNewEngine, (MidiInputDevice::midi_chan_t) Index());          if (pMidiInputPort) pMidiInputPort->Connect(pNewEngine, this->midiChannel);
80          if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);          if (pAudioOutputDevice) pAudioOutputDevice->Connect(pNewEngine);
81          dmsg(2,("OK\n"));          dmsg(2,("OK\n"));
82      }      }
# Line 79  namespace LinuxSampler { Line 84  namespace LinuxSampler {
84      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {      void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) {
85          // disconnect old device          // disconnect old device
86          if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);          if (pAudioOutputDevice && pEngine) pAudioOutputDevice->Disconnect(pEngine);
   
87          // connect new device          // connect new device
88          pAudioOutputDevice = pDevice;          pAudioOutputDevice = pDevice;
89          if (pEngine) pAudioOutputDevice->Connect(pEngine);          if (pEngine) pAudioOutputDevice->Connect(pEngine);
90      }      }
91    
92      void SamplerChannel::SetMidiInputDevice(MidiInputDevice::type_t MidiType, MidiInputDevice::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
93          // get / create desired midi device         SetMidiInput(pDevice, this->midiPort, this->midiChannel);
94          MidiInputDevice* pDevice = pSampler->GetMidiInputDevice(MidiType);      }
         if (!pDevice) pDevice = pSampler->CreateMidiInputDevice(MidiType);  
95    
96          // disconnect old device      void SamplerChannel::SetMidiInputPort(int MidiPort) {
97          if (pMidiInputDevice && pEngine) pMidiInputDevice->Disconnect(pEngine);         SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);
98        }
99    
100          // connect new device      void SamplerChannel::SetMidiInputChannel(MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {
101           SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
102        }
103    
104        void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int MidiPort, MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {
105            // dereference old midi input port.
106            MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
107            // disconnect old device port
108            if (pMidiInputPort && pEngine) pMidiInputPort->Disconnect(pEngine);
109            // new device, port and channel
110          pMidiInputDevice = pDevice;          pMidiInputDevice = pDevice;
111          if (pEngine) pMidiInputDevice->Connect(pEngine, MidiChannel);          this->midiPort = MidiPort;
112            this->midiChannel = MidiChannel;
113            // connect new device port
114            pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
115            if (pMidiInputPort && pEngine) pMidiInputPort->Connect(pEngine, MidiChannel);
116            // Ooops.
117            if (pMidiInputPort == NULL)
118                throw LinuxSamplerException("There is no MIDI input port with index " + ToString(MidiPort) + ".");
119      }      }
120    
121      Engine* SamplerChannel::GetEngine() {      Engine* SamplerChannel::GetEngine() {
122          return pEngine;          return pEngine;
123      }      }
124    
125      MidiInputDevice* SamplerChannel::GetMidiInputDevice() {      MidiInputDevice::MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {
126          return pMidiInputDevice;          return this->midiChannel;
127        }
128    
129        int SamplerChannel::GetMidiInputPort() {
130            MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
131            return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);
132      }      }
133    
134      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {      AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
135          return pAudioOutputDevice;          return pAudioOutputDevice;
136      }      }
137    
138        MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
139            return pMidiInputDevice;
140        }
141    
142      uint SamplerChannel::Index() {      uint SamplerChannel::Index() {
143          if (iIndex >= 0) return iIndex;          if (iIndex >= 0) return iIndex;
144    
145          std::vector<SamplerChannel*>::iterator iter = pSampler->vSamplerChannels.begin();          Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
146          for (int i = 0; iter != pSampler->vSamplerChannels.end(); i++, iter++) {          for (; iter != pSampler->mSamplerChannels.end(); iter++) {
147              if (*iter == this) {              if (iter->second == this) {
148                  iIndex = i;                  iIndex = iter->first;
149                  return i;                  return iIndex;
150              }              }
151          }          }
152    
153          throw LinuxSamplerException("SamplerChannel index not found");          throw LinuxSamplerException("Internal error: SamplerChannel index not found");
154        }
155    
156        MidiInputDevice::MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int MidiPort) {
157            MidiInputDevice::MidiInputPort *pMidiInputPort = NULL;
158            if (pMidiInputDevice)
159                pMidiInputPort = pMidiInputDevice->GetPort(MidiPort);
160            return pMidiInputPort;
161      }      }
162    
163    
164    
165      // ******************************************************************      // ******************************************************************
166      // * Sampler      // * Sampler
167    
# Line 132  namespace LinuxSampler { Line 169  namespace LinuxSampler {
169      }      }
170    
171      Sampler::~Sampler() {      Sampler::~Sampler() {
172          // 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;  
             }  
         }  
173      }      }
174    
175      uint Sampler::SamplerChannels() {      uint Sampler::SamplerChannels() {
176          return vSamplerChannels.size();          return mSamplerChannels.size();
177      }      }
178    
179      SamplerChannel* Sampler::AddSamplerChannel() {      SamplerChannel* Sampler::AddSamplerChannel() {
180            // if there's no sampler channel yet
181            if (!mSamplerChannels.size()) {
182                SamplerChannel* pChannel = new SamplerChannel(this);
183                mSamplerChannels[0] = pChannel;
184                return pChannel;
185            }
186    
187            // get the highest used sampler channel index
188            uint lastIndex = (--(mSamplerChannels.end()))->first;
189    
190            // check if we reached the index limit
191            if (lastIndex + 1 < lastIndex) {
192                // search for an unoccupied sampler channel index starting from 0
193                for (uint i = 0; i < lastIndex; i++) {
194                    if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
195                    // we found an unused index, so insert the new channel there
196                    SamplerChannel* pChannel = new SamplerChannel(this);
197                    mSamplerChannels[i] = pChannel;
198                    return pChannel;
199                }
200                throw LinuxSamplerException("Internal error: could not find unoccupied sampler channel index.");
201            }
202    
203            // we have not reached the index limit so we just add the channel past the highest index
204          SamplerChannel* pChannel = new SamplerChannel(this);          SamplerChannel* pChannel = new SamplerChannel(this);
205          vSamplerChannels.push_back(pChannel);          mSamplerChannels[lastIndex + 1] = pChannel;
206          return pChannel;          return pChannel;
207      }      }
208    
209      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {      SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
210          if (uiSamplerChannel >= SamplerChannels()) return NULL;          return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
211          return vSamplerChannels[uiSamplerChannel];      }
212    
213        std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
214            return mSamplerChannels;
215      }      }
216    
217      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {      void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
218          std::vector<SamplerChannel*>::iterator iterChan = vSamplerChannels.begin();          SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
219          for (; iterChan != vSamplerChannels.end(); iterChan++) {          for (; iterChan != mSamplerChannels.end(); iterChan++) {
220              if (*iterChan == pSamplerChannel) {              if (iterChan->second == pSamplerChannel) {
221                  vSamplerChannels.erase(iterChan);                  mSamplerChannels.erase(iterChan);
222                  delete pSamplerChannel;                  delete pSamplerChannel;
223                  return;                  return;
224              }              }
# Line 199  namespace LinuxSampler { Line 239  namespace LinuxSampler {
239          // create new device          // create new device
240          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);          AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
241    
         // activate device  
         pDevice->Play();  
   
242          // add new audio device to the audio device list          // add new audio device to the audio device list
243          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
244              if (!mAudioOutputDevices[i]) {              if (!mAudioOutputDevices[i]) {
# Line 217  namespace LinuxSampler { Line 254  namespace LinuxSampler {
254          return mAudioOutputDevices.size();          return mAudioOutputDevices.size();
255      }      }
256    
257        uint Sampler::MidiInputDevices() {
258            return mMidiInputDevices.size();
259        }
260    
261      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {      std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
262          return mAudioOutputDevices;          return mAudioOutputDevices;
263      }      }
264    
265        std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
266            return mMidiInputDevices;
267        }
268    
269      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {      void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (LinuxSamplerException) {
270          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();          AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
271          for (; iter != mAudioOutputDevices.end(); iter++) {          for (; iter != mAudioOutputDevices.end(); iter++) {
# Line 241  namespace LinuxSampler { Line 286  namespace LinuxSampler {
286          }          }
287      }      }
288    
289      MidiInputDevice* Sampler::CreateMidiInputDevice(MidiInputDevice::type_t MidiType) {      void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (LinuxSamplerException) {
290          // check if device already created          MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
291          MidiInputDevice* pDevice = GetMidiInputDevice(MidiType);          for (; iter != mMidiInputDevices.end(); iter++) {
292          if (pDevice) return pDevice;              if (iter->second == pDevice) {
293                    // check if there are still sampler engines connected to this device
294                    for (uint i = 0; i < SamplerChannels(); i++)
295                        if (GetSamplerChannel(i)->GetMidiInputDevice() == pDevice) throw LinuxSamplerException("Sampler channel " + ToString(i) + " is still connected to the midi input device.");
296    
297          // create new device                  // disable device
298          switch (MidiType) {                  pDevice->StopListen();
299              case MidiInputDevice::type_alsa:  
300                  pDevice = new MidiInputDeviceAlsa;                  // remove device from the device list
301                  break;                  mMidiInputDevices.erase(iter);
302              default:  
303                  throw LinuxSamplerException("Unknown audio output device type");                  // destroy and free device from memory
304                    delete pDevice;
305                }
306          }          }
307        }
308    
309          // activate device      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
310          pDevice->Listen();          // create new device
311            MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters);
312    
313          // add new MIDI device to the MIDI device list          // add new device to the midi device list
314          MidiInputDevices[MidiType] = pDevice;          for (uint i = 0; ; i++) { // seek for a free place starting from the beginning
315                    if (!mMidiInputDevices[i]) {
316                            mMidiInputDevices[i] = pDevice;
317                            break;
318                    }
319            }
320    
321          return pDevice;          return pDevice;
322      }      }
323    
324      MidiInputDevice* Sampler::GetMidiInputDevice(MidiInputDevice::type_t MidiType) {      void Sampler::Reset() {
325          MidiInputDeviceMap::iterator iter = MidiInputDevices.find(MidiType);          // delete sampler channels
326          return (iter != MidiInputDevices.end()) ? iter->second : NULL;          try {
327                SamplerChannelMap::iterator iter = mSamplerChannels.begin();
328                for (; iter != mSamplerChannels.end(); iter++) {
329                    RemoveSamplerChannel(iter->second);
330                }
331            }
332            catch(...) {
333                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
334                exit(EXIT_FAILURE);
335            }
336    
337            // delete midi input devices
338            try {
339                MidiInputDeviceMap::iterator iter = mMidiInputDevices.begin();
340                for (; iter != mMidiInputDevices.end(); iter++) {
341                    DestroyMidiInputDevice(iter->second);
342                }
343            }
344            catch(...) {
345                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
346                exit(EXIT_FAILURE);
347            }
348    
349            // delete audio output devices
350            try {
351                AudioOutputDeviceMap::iterator iter = mAudioOutputDevices.begin();
352                for (; iter != mAudioOutputDevices.end(); iter++) {
353                    DestroyAudioOutputDevice(iter->second);
354                }
355            }
356            catch(...) {
357                std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
358                exit(EXIT_FAILURE);
359            }
360      }      }
361    
362  } // namespace LinuxSampler  } // namespace LinuxSampler
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