#include <dc1394/juju/firewire-cdev.h>
struct fw_cdev_iso_packet - Isochronous packet : Contains the header length (8 uppermost bits), the sy field (4 bits), the tag field (2 bits), a sync flag (1 bit), a skip flag (1 bit), an interrupt flag (1 bit), and the payload length (16 lowermost bits) : Header and payload
&struct fw_cdev_iso_packet is used to describe isochronous packet queues.
Use the FW_CDEV_ISO_ macros to fill in . The sy and tag fields are specified by IEEE 1394a and IEC 61883.
FIXME - finish this documentation