Circular buffer implementation on Dj kit

[Bayanaa]

How to implement circular buffer on dj kit. I have a dj kit but in source codes for example i cannot see the buffer or buffer length. Only found NUM_USB_CHAN_OUT   NUM_USB_CHAN_IN,

Please guide me to implement it on dj kit. I want to use circular buffer on dj kit and want to apply dsp. 

In case of dsp I referred Adding-DSP-to-the-USB-Audio-2.0-L1-Reference-Design(1.1).pdf. but it does not work!

I appriciate any helps. source code..

[Ross]

The lengths in the code are defined based on the number of channels and the max sample frequency of the device