/[svn]/linuxsampler/trunk/src/Sampler.cpp
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revision 203 by schoenebeck, Tue Jul 13 22:44:13 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 "engines/EngineChannelFactory.h"
29  #include "drivers/audio/AudioOutputDeviceFactory.h"  #include "drivers/audio/AudioOutputDeviceFactory.h"
30  #include "drivers/midi/MidiInputDeviceFactory.h"  #include "drivers/midi/MidiInputDeviceFactory.h"
31  #include "engines/gig/Engine.h"  #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;          midiPort           = 0;
44          midiChannel        = MidiInputDevice::MidiInputPort::midi_chan_all;          midiChannel        = MidiInputPort::midi_chan_all;
45          iIndex             = -1;          iIndex             = -1;
46      }      }
47    
48      SamplerChannel::~SamplerChannel() {      SamplerChannel::~SamplerChannel() {
49          if (pEngine) {          if (pEngineChannel) {
50              MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);              MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
51              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngine);              if (pMidiInputPort) pMidiInputPort->Disconnect(pEngineChannel);
52              if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(pEngine);              if (pEngineChannel) {
53              delete pEngine;                  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.          // dereference midi input port.
67          MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);          MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
68          // disconnect old engine          // disconnect old engine
69          if (pEngine) {          if (pEngineChannel) {
70              if (pMidiInputPort) pMidiInputPort->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 (pMidiInputPort) pMidiInputPort->Connect(pNewEngine, this->midiChannel);          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* pDevice) {      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
# Line 97  namespace LinuxSampler { Line 101  namespace LinuxSampler {
101         SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);         SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);
102      }      }
103    
104      void SamplerChannel::SetMidiInputChannel(MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputChannel(MidiInputPort::midi_chan_t MidiChannel) {
105         SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);         SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
106      }      }
107    
108      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int MidiPort, MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, MidiInputPort::midi_chan_t MidiChannel) {
109          // dereference old midi input port.          // dereference old midi input port.
110          MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);          MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
111          // disconnect old device port          // disconnect old device port
112          if (pMidiInputPort && pEngine) pMidiInputPort->Disconnect(pEngine);          if (pMidiInputPort && pEngineChannel) pMidiInputPort->Disconnect(pEngineChannel);
113          // new device, port and channel          // new device, port and channel
114          pMidiInputDevice = pDevice;          pMidiInputDevice = pDevice;
115          this->midiPort = MidiPort;          this->midiPort = iMidiPort;
116          this->midiChannel = MidiChannel;          this->midiChannel = MidiChannel;
117          // connect new device port          // connect new device port
118          pMidiInputPort = GetMidiInputDevicePort(this->midiPort);          pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
119          if (pMidiInputPort && pEngine) pMidiInputPort->Connect(pEngine, MidiChannel);          if (pMidiInputPort && pEngineChannel) pMidiInputPort->Connect(pEngineChannel, MidiChannel);
120          // Ooops.          // Ooops.
121          if (pMidiInputPort == NULL)          if (pMidiInputPort == NULL)
122              throw LinuxSamplerException("There is no MIDI input port with index " + ToString(MidiPort) + ".");              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::MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {      MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {
130          return this->midiChannel;          return this->midiChannel;
131      }      }
132    
133      int SamplerChannel::GetMidiInputPort() {      int SamplerChannel::GetMidiInputPort() {
134          MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);          MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
135          return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);          return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);
136      }      }
137    
# Line 142  namespace LinuxSampler { Line 146  namespace LinuxSampler {
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      MidiInputDevice::MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int MidiPort) {      MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int iMidiPort) {
161          MidiInputDevice::MidiInputPort *pMidiInputPort = NULL;          MidiInputPort* pMidiInputPort = NULL;
162          if (pMidiInputDevice)          if (pMidiInputDevice)
163              pMidiInputPort = pMidiInputDevice->GetPort(MidiPort);              pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
164          return pMidiInputPort;          return pMidiInputPort;
165      }      }
166    
167    
168    
169      // ******************************************************************      // ******************************************************************
170      // * Sampler      // * Sampler
171    
# Line 167  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 = mMidiInputDevices.begin();  
             for (; iter != mMidiInputDevices.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 303  namespace LinuxSampler { Line 316  namespace LinuxSampler {
316    
317      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
318          // create new device          // create new device
319          MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters);          MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
320    
321          // add new device to the midi device list          // add new device to the midi device list
322          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
# Line 316  namespace LinuxSampler { Line 329  namespace LinuxSampler {
329          return pDevice;          return pDevice;
330      }      }
331    
332        void Sampler::Reset() {
333            // delete sampler channels
334            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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