[Lazarus] Extract the color data and alpha from a PNG image

[silvioprog]

Oops, files attached.

2013/2/5 silvioprog <silvioprog at gmail.com>

> Hello friends,
>
> I'm trying to extract the color data and alpha from a PNG image. In PHP it
> is very easy to implement, but in FPC I don't know how to do it. I tried to
> do it via "chunk.data", "ZData" etc., but, without success.
>
> Attached two files to test it. To test the PHP code run this command in
> your terminal:
>
> php -f fpdf.php
>
> The in FPC code is partially complete.
>
> Thank you!
>
> ps. can ZData be public?
>

-- 
Silvio Clécio
My public projects - github.com/silvioprog
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