Re: Weird Problem With CGImage

FROM : Michael Vannorsdel
DATE : Fri Apr 25 20:16:50 2008

Could it be the CGImage references a compressed image format rather 
than a bitmap?


On Apr 25, 2008, at 8:51 AM, Carter R. Harrison wrote:

> What is killing me here is that the CGImage has dimensions 417x234 
> and 1668 bytes per row.  That to me means that the CFDataRef that I 
> am obtaining should be 390,312 bytes (234 x 1668).  But the 
> CFDataRef is only 6,672 bytes which is nowhere close to what I think 
> I should be getting.  So I must be doing something wrong in trying 
> to get the bitmap data, but I'm not sure what else to do and I even 
> found some Apple docs with an example doing the exact same thing 
> that I am doing.  Can anybody provide some insight on this?  Thanks 
> everybody.