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From: tmoran@acm.org
Newsgroups: comp.lang.ada
Subject: Re: Thinking of using Ada for a job at home. Couple of questions
 first.
Date: Wed, 3 Mar 2010 21:35:03 +0000 (UTC)
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Date: 2010-03-03T21:35:03+00:00
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>I think I agree with Dmitry, "reading the octet stream or else what is
>natural for the device or the protocol at hand, and then constructing
>the necessary Ada objects on the fly".

  CLAW's bitmap routines have an abstract Root_DIBitmap_Type, with monochrome,
VGA, 24 bit color, etc derived types.  For reading a bmp file
    function Read (Filename : in String)
        return Claw.Bitmaps.Root_DIBitmap_Type'class;
internally reads the header bytes, then creates an object of the correct
derived type, reads the data into it, and returns that.  Works just fine.

I don't know about MIDI, but for wav and video Windows generally assumes
you can't do accurate timing, but it can.  So your routines either operate
at a high level or are called as callbacks if they have to execute at an
accurate time.  Ada tasking works just fine for me with audio/video stuff.