C++ MarSystem::setControl方法代码示例

int run( const string system_filename, const CommandLineOptions & opt )
{
    int ticks = 0;
    if (opt.has("count"))
    {
      ticks = opt.value<int>("count");
      if (ticks < 1)
      {
        cerr << "Invalid value for option 'count' (must be > 0)." << endl;
        return 1;
      }
    }

    ifstream system_istream(system_filename);
    MarSystemManager mng;
    MarSystem* system = mng.getMarSystem(system_istream);
    if (!system) {
        cerr << "Could not load filesystem file:" << system;
        return 1;
    }

    bool realtime = opt.value<bool>("realtime");
    mrs_real sr = opt.value<mrs_real>("samplerate");
    mrs_natural block = opt.value<mrs_natural>("block");

    if (sr > 0)
      system->setControl("mrs_real/israte", sr);
    if (block > 0)
      system->setControl("mrs_natural/inSamples", block);
    system->update();

    RealTime::Runner runner(system);
    runner.setRtPriorityEnabled(realtime);

    runner.start((unsigned int)ticks);
    runner.wait();

    return 0;
}

// Play a collection l of soundfiles
void sfplay(vector<string> soundfiles)
{
  MRSDIAG("sfplay.cpp - sfplay");

  MarSystemManager mng;
  string sfName;

  // Output destination is either audio or soundfile
  MarSystem* dest;
  if (fileName == EMPTYSTRING)	// audio output
  {
    dest = mng.create("AudioSink", "dest");

    string backend = cmd_options.getStringOption("audio-backend");
    if (!backend.empty())
      dest->setControl("mrs_string/backend", backend);
  }
  else 				// filename output
  {
    dest = mng.create("SoundFileSink", "dest");
  }

  // create playback network with source-gain-dest
  MarSystem* playbacknet = mng.create("Series", "playbacknet");

  playbacknet->addMarSystem(mng.create("SoundFileSource", "src"));
  playbacknet->addMarSystem(mng.create("Gain", "gt"));
  playbacknet->addMarSystem(dest);

  // playback offset


  // update controls
  playbacknet->updControl("mrs_natural/inSamples", windowsize);
  playbacknet->updControl("Gain/gt/mrs_real/gain", gain);

  // link top-level controls
  playbacknet->linkControl("mrs_string/filename","SoundFileSource/src/mrs_string/filename");
  playbacknet->linkControl("mrs_real/israte", "SoundFileSource/src/mrs_real/israte");
  playbacknet->linkControl("mrs_natural/pos", "SoundFileSource/src/mrs_natural/pos");
  playbacknet->linkControl("mrs_natural/loopPos", "SoundFileSource/src/mrs_natural/loopPos");
  playbacknet->linkControl("mrs_bool/hasData", "SoundFileSource/src/mrs_bool/hasData");


  if (fileName == EMPTYSTRING)	// audio output
    playbacknet->linkControl("mrs_bool/initAudio", "AudioSink/dest/mrs_bool/initAudio");


  // play each collection or soundfile
  vector<string>::iterator sfi;
  for (sfi = soundfiles.begin(); sfi != soundfiles.end(); ++sfi)
  {
    string fname = *sfi;
    playbacknet->updControl("mrs_string/filename", fname);

    mrs_natural nChannels = playbacknet->getctrl("mrs_natural/onObservations")->to<mrs_natural>();
    mrs_real srate = playbacknet->getctrl("mrs_real/israte")->to<mrs_real>();

    ;
    offset = (mrs_natural) (start * srate * nChannels);

    playbacknet->updControl("mrs_natural/loopPos", offset);
    playbacknet->updControl("mrs_natural/pos", offset);
    playbacknet->updControl("SoundFileSource/src/mrs_real/repetitions", repetitions);
    playbacknet->updControl("SoundFileSource/src/mrs_real/duration", length);



    if (fileName != EMPTYSTRING) // soundfile output instead of audio output
      playbacknet->updControl("SoundFileSink/dest/mrs_string/filename", fileName);

    if (fileName == EMPTYSTRING)	// audio output
    {
      playbacknet->updControl("AudioSink/dest/mrs_natural/bufferSize", 256);
      playbacknet->updControl("AudioSink/dest/mrs_bool/initAudio", true);
    }
    MarControlPtr hasDataPtr_ =
      playbacknet->getctrl("mrs_bool/hasData");

    while (hasDataPtr_->isTrue())
    {
      playbacknet->tick();
    }
    //cout << *playbacknet << endl;
  }

  // output network description to cout
  if ((pluginName == EMPTYSTRING) && (verboseopt)) // output to stdout
  {
    cout << (*playbacknet) << endl;
  }
  else if (pluginName != EMPTYSTRING)             // output to plugin
  {
    ofstream oss(pluginName.c_str());
    oss << (*playbacknet) << endl;
  }
  delete playbacknet;
}