A question about the player in demo/

[DoormatIka]

while data.len() >= num_channels {
    let read_frames = data.len() / 2;

In the demo/player/src/process.rs file, what does this do exactly?

Why is it dividing cpal's data length to 2?
Is it to adjust the buffer length for creek to parse through?

I am new to working with sound so I apologize if this is obvious for you.

[Be-ing]

This seems to be assuming the buffer has 2 channels (stereo). 2 should probably be replaced with num_channels.