Article View: comp.sys.next.misc
Article #2475looking at the bits in video frames (3.0 NeXT Dimension)
From: Michael Hawley
Date: Tue, 01 Sep 1992 03:30
Date: Tue, 01 Sep 1992 03:30
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Has anyone got a convenient and efficient way to get at the bits in grabbed video frames (on a NeXT Dimension under 3.0)? The problem is this: when you grab the frame, you get an image with representation NXCachedImageRep, which presumably somewhere has a pointer to the raw image in NeXTDimension memory. There are no methods to directly read this data, although you can draw it out to another view. I tried compositing the NXCachedImageRep image into a newly allocated image with an NXBitmapImageRep (a TIFF), but the latter was converted to an NXCachedImageRep! What I would like to do is simply get my hands on the pixel array that underlies the NXCachedImageRep of a grabbed frame, without copying and converting the whole frame. Thanks for any leads.
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Path: arc1-ca.pugleaf.net!sparky!uunet!cs.utexas.edu!rutgers!micro-heart-of-gold.mit.edu!news.media.mit.edu!news From: mike@media-lab.mit.edu (Michael Hawley) Newsgroups: comp.sys.next.misc,comp.sys.next.programmer Subject: looking at the bits in video frames (3.0 NeXT Dimension) Message-ID: <1992Sep1.033025.7164@news.media.mit.edu> Date: 1 Sep 92 03:30:25 GMT Sender: news@news.media.mit.edu (USENET News System) Reply-To: mike@media-lab.mit.edu Organization: MIT Media Laboratory Lines: 17