Re: [Openexr-devel] Long Channel Names

[Darrin Cardani]

At 2:54 PM +0100 8/15/03, Lee Kerley wrote:
> I'm new to OpenEXR development, but I have a display driver for 
> prman that writes out EXR files.  The problem is that when I output 
> secondary outputs from my prman render the name of the channel get's 
> quite long.  I've noticed in the code that there is a limit of 32 
> characters.  Is there any reason why this maximum name length is so 
> short. I accept that in most circumstances that a channel name would 
> normally be quite short, but in thius situation I need it to be 
> longer.  I have altered the size of SIZE define in ImfName.h to 
> 1024, in my own build, but would like to request that this change be 
> included in further releases of OpenEXR.
>
> On a more immediate note, are there any implications with me 
> changing this variable to 1024 as opposed to it's default setting of 
> 32?

I'm guessing this is an artifact of the Mac OS FSSpec structure which 
is used to specify a file. Newer versions of the OS (OS 9 and above, 
I believe) can support longer file names, but there's still a lot of 
code out there using the old structures. So the obvious consequence 
is that if you change it, there's a chance that you won't be able to 
use those files on a Mac.

Darrin
--
Darrin Cardani - address@hidden
President, Buena Software, Inc.
<http://www.buena.com/>
Video, Image and Audio Processing Development