| From: | Gunther Nikl |
| Date: | 14 Aug 2001 at 10:01:09 |
| Subject: | [amiga-c] Re: Creating a pictdt object |
On Mon, Aug 13, 2001 at 07:44:48PM -0000, Shinda wrote:
> > Where is a newer libjpg? What bugs does libpng have affecting you?
You didn't answer those questions...
> > What new picture dt api are you speaking about?
>
> The new picture datatype api(v44) supports Multi image files
> (PDTA_GetNumPictures, etc).
As you already wrote: this is ONLY interesting for multimage formats
like TIFF. Its of no use eg. for jpeg and png!
> supports dithering so sub-datatypes should not remap themselves and
> should leave it to the picture datatype. Check out the AutoDoc.
Thank you for this valuable input... Clearly, you don't know what you
are talking about. Dithering was ONLY necessary for the old V42 API
since it couldn't grok true-colour data. Image datatypes working in
V43 mode didn't dither the image data itself ever (that doesn't mean
a subdatatype shouldn't do it itself if that has advantages!)
> JPEG support needs support of all the other sub variant formats such
> as Exif, Adobe, Photoshop, etc.
This is only a descriptor issue, no big deal...
> and other datatypes may need different compression support.
???
> So there is always need of updating not just for bugs.
Apparently you fail to realize this: its possible to do it "right" from
the beginning. If it WORKS there is no need to create an update.
Gunther
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