Re: bitmap% performance

Robby Findler <robby-Tm56wbeMse4mSb9I+tWM/[email protected]> Thu, 23 Apr 2020 15:52:00 -0500

Newsgroups	gmane.comp.lang.racket.user,gmane.lisp.scheme.plt
Message-ID	<CAL3TdOP-i6soN+uLZ4OqsAvtGfDLhr28FE5wYpyWXRtxonK2Bg@mail.gmail.com>

On Thu, Apr 23, 2020 at 1:14 PM 'racket' via users-redirect
<[email protected]> wrote:
>
> > Thanks! For the first task I think you probably have to use the raw
> > bitmap% object (since I guess you're using `read-bitmap`).
>
> Hi Robby, I don’t understand how to read a jpeg into a platform-bitmap. Probably I'm missing something in the documentation…

Right-- I agree that that isn't supported currently. I don't know how
difficult it would be to support.

Just a random thought: did you try using the read-bitmap method on the
already created bitmap? I don't know if that would be faster (I wanted
to try before posting but I didn't get there). It may be, however,
that the code inside bitmap% would have to be improved.

Robby

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