DEF_USB_BLOCK
DEF_HUE, 0, DEF_USB_BLOCK, 0}
pdata += DEF_USB_BLOCK;
jj += DEF_USB_BLOCK;
mask_mult = 0xffffffffUL - DEF_USB_BLOCK + 1;
usbInSize = (usbInSize & mask_mult) + (DEF_USB_BLOCK);