Method Process

Source/SignalGenerator.cpp:136–206

}

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

   IAudioReceiver* target = GetTarget();

   if (!mEnabled || target == nullptr)
      return;

   int bufferSize = target->GetBuffer()->BufferSize();
   float* out = target->GetBuffer()->GetChannel(0);
   assert(bufferSize == gBufferSize);

   Clear(mWriteBuffer, gBufferSize);
   for (int pos = 0; pos < bufferSize; ++pos)
   {
      ComputeSliders(pos);

      if (mResetPhaseAtMs > 0 && time > mResetPhaseAtMs)
      {
         mPhase = mPhaseOffset;
         mResetPhaseAtMs = -9999;
      }

      float volSq = mVol * mVol;

      if (mFreqMode == kFreqMode_Root)
         mFreq = TheScale->PitchToFreq(TheScale->ScaleRoot() + 24);
      else if (mFreqMode == kFreqMode_Ramp)
         mFreq = mFreqRamp.Value(time);
      else if (mFreqMode == kFreqMode_Slider)
         mFreq = ofLerp(mFreqSliderStart, mFreqSliderEnd, mFreqSliderAmount);

      float mult = mMult;
      if (mult < 0)
         mult = -1.0f / mult;
      float outputFreq = mFreq * exp2(mDetune) * mult;
      float phaseInc = GetPhaseInc(outputFreq);

      float syncPhaseInc = 0;
      if (mSyncMode == Oscillator::SyncMode::Frequency)
         syncPhaseInc = GetPhaseInc(mSyncFreq);
      else if (mSyncMode == Oscillator::SyncMode::Ratio)
         syncPhaseInc = GetPhaseInc(outputFreq * mSyncRatio);

      mPhase += phaseInc;
      if (mPhase == INFINITY)
      {
         ofLog() << "Infinite phase.";
      }
      else
      {
         while (mPhase > FTWO_PI * 2)
         {
            mPhase -= FTWO_PI * 2;
            mSyncPhase = 0;
         }
      }