2013/2/5 José Mejuto <joshy...@gmail.com> > El 05/02/2013 15:36, silvioprog escribió: > > 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. >> > > The question is what information are you looking for ? The compressed PNG > data, uncompressed, palette applied or not... I doubt that you need the raw > uncompressed bitmap. >
You have puted a PNG image into a PDF? That's what I'm trying to do, and it needs of the uncompressed data too (or compressed as gzip). > That PHP code is a toy and can handle only a subset of PNGs. > FPDF is a very good library, and it does what it promises. It handles a good range of PNG formats, indexeds, grayed, with or without palette etc. So, if is so easy to do, how I it do then? -- Silvio Clécio My public projects - github.com/silvioprog
-- _______________________________________________ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
