External control of a compressor block's parameters

Hello,

I'm using sigma studio 4.6 with an ADAU1701 eval board. My goal is to create a hardware compressor, with external controls (e.g. rotary encoders). Experimenting with sigma studio I've found no way to externally control the parameters (e.g. threshold, attack, decay) of a compressor block. Is this possible with the 1701? Do I need to use another DSP? If not, will you add this functionality in the future?

Any assistance would be appreciated. 

Thanks