don't perform dirty check and make dirty flag atomic

system_modules/napfft/src/fftbuffer.cpp

@@ -200,18 +200,14 @@ namespace nap
 
 	const std::vector<float>& FFTBuffer::getAmplitudeSpectrum()
 	{
-		if (mDirty)
-			transform();
-
+		transform();
 		return mAmplitude;
 	}
 
 
 	const std::vector<float>& FFTBuffer::getPhaseSpectrum()
 	{
-		if (mDirty)
-			transform();
-
+		transform();
 		return mPhase;
 	}
 

system_modules/napfft/src/fftbuffer.h

@@ -99,6 +99,6 @@ namespace nap
 		EOverlap mOverlap;											//< The number of audio buffer overlaps for FFT analysis (hops)
 		uint mHopSize;												//< The number of bins of a single hop
 
-		bool mDirty = false;										//< Amplitudes dirty checking flag, prevents redundant FFT analyses 
+		std::atomic<bool> mDirty = { false };										//< Amplitudes dirty checking flag, prevents redundant FFT analyses 
 	};
 }