Re: BMP bug in ImageIO?

FROM : John Stiles
DATE : Fri Jan 11 10:34:52 2008

A negative height in the BMP header means that the scanlines are 
stored from top-to-bottom (rather than bottom-to-top, which is what 
you get if you put a positive height). I don't believe that this is a 
bug.


On Jan 11, 2008, at 8:36 AM, Sean McBride wrote:

> On 1/11/08 10:43 AM, Rimas said:
>

>> I am not sure where should I post, but I think, I have found a bug in
>> ImageIO framework.
>>
>> I am using this framework to save images. Noticed (using 'file'
>> command in terminal) that BMP images, created with ImageIO has
>> negative height (PC bitmap data, Windows 3.x format, 1200 x -900 x
>> 24). Such images causes open problems on Windows.
>> The same happens when saving images in BMP format with Apple Preview
>> (I am sure it uses the same ImageIO).

>
> File a bug with a test case at
> <https://bugreport.apple.com>
>
> --
> ____________________________________________________________
> Sean McBride, B. Eng                <email_removed>
> Rogue Research                        www.rogue-research.com
> Mac Software Developer              Montréal, Québec, Canada
>
> _______________________________________________
>
> Cocoa-dev mailing list (<email_removed>)
>
> Please do not post admin requests or moderator comments to the list.
> Contact the moderators at cocoa-dev-admins(at)lists.apple.com
>
> Help/Unsubscribe/Update your Subscription:
> http://lists.apple.com/mailman/options/cocoa-dev/jstiles%
> 40blizzard.com
>
> This email sent to <email_removed>