On Thu, 03 Feb 2005 20:54:56 -0800, GigaMuxer
 wrote:

>
>Hello gang,
>
>I am preparing to build a VB app that will parse and decode a Binary
>file. I'll explain the file structure bellow, but what I am looking for
>is some source explaining how to do things like this fast on VB. This
>would at least give me a head start.
>
>
>The structure of the file is something like this:
>
>File can be split into 32 bytes(packets).
>	All packets start w/ a sync of 0x47.
>Each packet 3 bytes Header and 29 bytes data.
>	Header:
>		1st byte = sync
>		2nd byte = identifier
>		3rd byte = type(2 bits) , continuity(4 bits)and  version  (2 bits)
>
>There are 4 ways to decode the payload data and its specified by the
>type value. This is errelevant as what I am trying to do now is to parse
>the file.  These files can be as large as 5Mb.

Open the file in Binary or Random mode and read the data into a UDT

Since the records are always 32 bytes long you might as well use
Random mode

If you want to do it really fast then open the file in Binary mode,
read the data in large chunks into a Byte Array
- then use CopyMemory to push the bytes into a UDT


--- UseNet To RIME Gateway {at} 2/4/05 6:20:25 AM ---