Method Process

Source/FeedbackModule.cpp:66–130

}

void FeedbackModule::Process(double time)
{
   PROFILER(FeedbackModule);


   ComputeSliders(0);
   SyncBuffers();

   int bufferSize = GetBuffer()->BufferSize();
   IAudioReceiver* target = GetTarget();

   if (target)
   {
      for (int ch = 0; ch < GetBuffer()->NumActiveChannels(); ++ch)
      {
         Add(target->GetBuffer()->GetChannel(ch), GetBuffer()->GetChannel(ch), bufferSize);
         GetVizBuffer()->WriteChunk(GetBuffer()->GetChannel(ch), bufferSize, ch);
      }
   }

   if (mFeedbackTarget && mEnabled)
   {
      mFeedbackTarget->GetBuffer()->SetNumActiveChannels(GetBuffer()->NumActiveChannels());
      mFeedbackVizBuffer.SetNumChannels(GetBuffer()->NumActiveChannels());
      mDelay.ProcessAudio(time, GetBuffer());

      const double kReleaseMs = 50;
      const double kReleaseCoeff = exp(-1000.0 / (kReleaseMs * gSampleRate));
      for (int ch = 0; ch < GetBuffer()->NumActiveChannels(); ++ch)
      {
         float* channel = GetBuffer()->GetChannel(ch);
         for (int i = 0; i < bufferSize; ++i)
         {
            //ofLog() << "input: " << channel[i];
            if (abs(channel[i]) * mGainScale[ch] > mSignalLimit)
            {
               mGainScale[ch] = mSignalLimit / abs(channel[i]); //limit immediately
               //ofLog() << "limiting, new scale " << mGainScale[ch];
            }
            else
            {
               mGainScale[ch] = MIN(1 - kReleaseCoeff * (mGainScale[ch] - 1), //blend towards 1
                                    mSignalLimit / abs(channel[i])); //but don't make the scale less than it would have to be to limit the output
               //ofLog() << "releasing, new scale " << mGainScale[ch];
            }

            channel[i] *= mGainScale[ch];
            //ofLog() << "output: " << channel[i];
            //assert(abs(channel[i]) <= mSignalLimit);
         }

         if (mDelay.IsEnabled())
         {
            Add(mFeedbackTarget->GetBuffer()->GetChannel(ch), GetBuffer()->GetChannel(ch), bufferSize);
            mFeedbackVizBuffer.WriteChunk(GetBuffer()->GetChannel(ch), bufferSize, ch);
         }
         else
         {