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Groups > comp.sys.acorn.programmer > #6378

Re: Reading the dimensions of a sprite or JPEG on disk

From Paul Sprangers <Paul@sprie.nl>
Subject Re: Reading the dimensions of a sprite or JPEG on disk
Newsgroups comp.sys.acorn.programmer
Date 2022-05-31 15:59 +0200
Message-ID <59f13d9c35Paul@sprie.nl> (permalink)
References (5 earlier) <56KdnRloBeIyTAn_nZ2dnUU7-S3NnZ2d@brightview.co.uk> <59f0be8a9aPaul@sprie.nl> <ZeadnfdmIvFTZAn_nZ2dnUU7-WfNnZ2d@brightview.co.uk> <59f119bd97Paul@sprie.nl> <59f133acfdNews03@avisoft.f9.co.uk>
Organization None

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In article <59f133acfdNews03@avisoft.f9.co.uk>,
   Martin <News03@avisoft.f9.co.uk> wrote:

> I do not think it is the Wimp that is your problem.

Well, it's certainly not my *only* problem...


> I suspect your problem with sprites is that a sprite file can (and
> usually does) contain several sprites. [ ... ]

Actually I want to restrict myself to sprite files that contain just one
sprite. Since my program is meant to process photo's, JPEGs will be the
vast majority of the dragged files anyway.

The current problem (the one that blocks me from running into new ones) is
that I fail to handle the ChangeFSI function properly. The routine that I
have now does allow me to process some small JPEGs the way I want, before
it runs out of memory. I don't know how to increase its workspace, despite
the nice documentation, nor do I know how to save the resulting sprite into
an existing sprite file.

Kind regards,
Paul

-- 
https://riscos.sprie.nl

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Thread

Reading the dimensions of a sprite or JPEG on disk Paul Sprangers <Paul@sprie.nl> - 2022-05-28 12:08 +0200
  Re: Reading the dimensions of a sprite or JPEG on disk News <chrisjohnson@spamcop.net> - 2022-05-28 11:37 +0100
    Re: Reading the dimensions of a sprite or JPEG on disk Paul Sprangers <Paul@sprie.nl> - 2022-05-28 12:48 +0200
      Re: Reading the dimensions of a sprite or JPEG on disk Gerald Holdsworth <nospam@hollypops.co.uk> - 2022-05-28 14:26 +0100
        Re: Reading the dimensions of a sprite or JPEG on disk Paul Sprangers <Paul@sprie.nl> - 2022-05-30 13:58 +0200
          Re: Reading the dimensions of a sprite or JPEG on disk Gerald Holdsworth <nospam@hollypops.co.uk> - 2022-05-30 15:16 +0100
            Re: Reading the dimensions of a sprite or JPEG on disk Paul Sprangers <Paul@sprie.nl> - 2022-05-30 16:51 +0200
              Re: Reading the dimensions of a sprite or JPEG on disk Gerald Holdsworth <nospam@hollypops.co.uk> - 2022-05-30 18:07 +0100
                Re: Reading the dimensions of a sprite or JPEG on disk Paul Sprangers <Paul@sprie.nl> - 2022-05-31 09:27 +0200
                Re: Reading the dimensions of a sprite or JPEG on disk Gerald Holdsworth <nospam@hollypops.co.uk> - 2022-05-31 12:12 +0100
                Re: Reading the dimensions of a sprite or JPEG on disk Paul Sprangers <Paul@sprie.nl> - 2022-05-31 15:30 +0200
                Re: Reading the dimensions of a sprite or JPEG on disk Gerald Holdsworth <nospam@hollypops.co.uk> - 2022-05-31 21:51 +0100
                Re: Reading the dimensions of a sprite or JPEG on disk Steve Fryatt <news@stevefryatt.org.uk> - 2022-05-31 23:29 +0100
                Re: Reading the dimensions of a sprite or JPEG on disk Martin Wuerthner <spamtrap@mw-software.com> - 2022-06-07 16:33 +0200
                Re: Reading the dimensions of a sprite or JPEG on disk Paul Sprangers <Paul@sprie.nl> - 2022-06-11 08:56 +0200
                Re: Reading the dimensions of a sprite or JPEG on disk Sprow <news@sprow.co.uk> - 2022-06-12 08:15 -0700
                Re: Reading the dimensions of a sprite or JPEG on disk Martin <News03@avisoft.f9.co.uk> - 2022-05-31 13:10 +0100
                Re: Reading the dimensions of a sprite or JPEG on disk Paul Sprangers <Paul@sprie.nl> - 2022-05-31 15:59 +0200
                Re: Reading the dimensions of a sprite or JPEG on disk News <chrisjohnson@spamcop.net> - 2022-05-31 16:28 +0100
                Re: Reading the dimensions of a sprite or JPEG on disk News <chrisjohnson@spamcop.net> - 2022-05-31 16:51 +0100
                Re: Reading the dimensions of a sprite or JPEG on disk Paul Sprangers <Paul@sprie.nl> - 2022-05-31 18:33 +0200

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