/[svn]/linuxsampler/trunk/src/Sampler.cpp
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revision 203 by schoenebeck, Tue Jul 13 22:44:13 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 "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                    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");
65              case Engine::type_gig:  
66                  pNewEngine = new gig::Engine;          //FIXME: hack to allow fast retrieval of engine channel's sampler channel index
67                  break;          pNewEngineChannel->iSamplerChannelIndex = Index();
             default:  
                 throw LinuxSamplerException("Unknown engine type");  
         }  
68    
69          // dereference midi input port.          // dereference midi input port.
70          MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);          MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
71          // disconnect old engine          // disconnect old engine
72          if (pEngine) {          if (pEngineChannel) {
73              if (pMidiInputPort) pMidiInputPort->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 (pMidiInputPort) pMidiInputPort->Connect(pNewEngine, this->midiChannel);          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* pDevice) {      void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) {
# Line 97  namespace LinuxSampler { Line 104  namespace LinuxSampler {
104         SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);         SetMidiInput(pMidiInputDevice, MidiPort, this->midiChannel);
105      }      }
106    
107      void SamplerChannel::SetMidiInputChannel(MidiInputDevice::MidiInputPort::midi_chan_t MidiChannel) {      void SamplerChannel::SetMidiInputChannel(MidiInputPort::midi_chan_t MidiChannel) {
108         SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);         SetMidiInput(pMidiInputDevice, this->midiPort, MidiChannel);
109      }      }
110    
111      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) {
112          // dereference old midi input port.          // dereference old midi input port.
113          MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);          MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
114          // disconnect old device port          // disconnect old device port
115          if (pMidiInputPort && pEngine) pMidiInputPort->Disconnect(pEngine);          if (pMidiInputPort && pEngineChannel) pMidiInputPort->Disconnect(pEngineChannel);
116          // new device, port and channel          // new device, port and channel
117          pMidiInputDevice = pDevice;          pMidiInputDevice = pDevice;
118          this->midiPort = MidiPort;          this->midiPort = iMidiPort;
119          this->midiChannel = MidiChannel;          this->midiChannel = MidiChannel;
120          // connect new device port          // connect new device port
121          pMidiInputPort = GetMidiInputDevicePort(this->midiPort);          pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
122          if (pMidiInputPort && pEngine) pMidiInputPort->Connect(pEngine, MidiChannel);          if (pMidiInputPort && pEngineChannel) pMidiInputPort->Connect(pEngineChannel, MidiChannel);
123          // Ooops.          // Ooops.
124          if (pMidiInputPort == NULL)          if (pMidiInputPort == NULL)
125              throw LinuxSamplerException("There is no MIDI input port with index " + ToString(MidiPort) + ".");              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::MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {      MidiInputPort::midi_chan_t SamplerChannel::GetMidiInputChannel() {
133          return this->midiChannel;          return this->midiChannel;
134      }      }
135    
136      int SamplerChannel::GetMidiInputPort() {      int SamplerChannel::GetMidiInputPort() {
137          MidiInputDevice::MidiInputPort *pMidiInputPort = GetMidiInputDevicePort(this->midiPort);          MidiInputPort* pMidiInputPort = GetMidiInputDevicePort(this->midiPort);
138          return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);          return (pMidiInputPort ? (int) pMidiInputPort->GetPortNumber() : -1);
139      }      }
140    
# Line 142  namespace LinuxSampler { Line 149  namespace LinuxSampler {
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      MidiInputDevice::MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int MidiPort) {      MidiInputPort* SamplerChannel::GetMidiInputDevicePort(int iMidiPort) {
164          MidiInputDevice::MidiInputPort *pMidiInputPort = NULL;          MidiInputPort* pMidiInputPort = NULL;
165          if (pMidiInputDevice)          if (pMidiInputDevice)
166              pMidiInputPort = pMidiInputDevice->GetPort(MidiPort);              pMidiInputPort = pMidiInputDevice->GetPort(iMidiPort);
167          return pMidiInputPort;          return pMidiInputPort;
168      }      }
169    
170    
171    
172      // ******************************************************************      // ******************************************************************
173      // * Sampler      // * Sampler
174    
# Line 167  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 = 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;  
             }  
         }  
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 303  namespace LinuxSampler { Line 319  namespace LinuxSampler {
319    
320      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {      MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (LinuxSamplerException) {
321          // create new device          // create new device
322          MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters);          MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
323    
324          // add new device to the midi device list          // add new device to the midi device list
325          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 332  namespace LinuxSampler {
332          return pDevice;          return pDevice;
333      }      }
334    
335        void Sampler::Reset() {
336            // delete sampler channels
337            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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