Re: [Ming-dev] Perl and bitmaps

[strk <st...@ke...>]

On Sun, Mar 15, 2009 at 10:24:37PM +0100, strk wrote:
> On Sun, Mar 15, 2009 at 06:24:30PM +0100, Albrecht Kleine wrote:
> > Hi,
> > 
> > > I'm not sure I see a case for handling alpha separaterly.
> > > At least I tought the core lib would read alpha when available
> > > in input (say png).
> > > Jpeg with alpha would be impossible to generate with Ming,
> > > by relying on that.
> > 
> > So we need still some old code.
> > A testing case inside ming distribution you'll find in 
> > 
> >   per_ext/examples/alphafill.cgi
> > 
> > This is one of Soheil's examples I have made runnig again last month,
> > now once more broken.
> 
> Ok, I took a closer look now and see what you mean.
> A couple of questions:
> 	1. Would a PNG make any difference at compression
> 	   level when alpha is desired ? 
> 	2. Shouldn't the caller be explicit when it wants
> 	   a JPEG with ALPHA rather than a generic bitmap ?
> 
> Another thing: could you send me the SWF generated for 
> the alpha jpeg so I see how does swfextract deals with 
> that ? 

Tested myself, after fixing the extension to take a non-null
alpha parameter as a signal that the filename is a jpeg.
Swfextract just doesn't extract the alpha channel...

--strk;

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