Table A.10. URB driver fields
| Position | Data type | Description |
|---|---|---|
| 0x00 | void* | Pointer to begin of buffer data. If data is included in this structure it will point behind the waiting structure else it must point to the piece of memory which is used as data buffer. |
| 0x04 | unsigned long | Allocated data buffer size in Bytes. If the offset is added to this value you are getting the whole size of the buffer structure. |
| 0x08 | unsigned long | Number of Bytes in the buffer which are really used for data in the moment. |
| 0x0C | unsigned long | Actual position of data transfer. |