I'm a Quartz Composer (and Mac programming) noob, so hopefully this
isn't too stupid, but trawling through the list archives and developer
docs didn't seem to turn up answers to my question.
Basically, I have a Canon EOS 40D SLR which is producing a series of
JPEGs via its LivePreview. I'm using Canon's C++ SDK right now to
dump into memory. I'm looking for the easiest way to stream this into
Quartz Composer (w/ acceptable performance, say 10fps+ -- the
theoretical max bandwidth via USB 2.0 is about 30fps anyway, and I'm
getting about 20fps if I don't do anything else -- I take a huge hit
if I write to disk).
It looks like the Video Input patch is looking for a "Video Device" --
is that what I'd need to create? The other doc I found that I thought
might be relevant was TN2143: http://developer.apple.com/technotes/tn2005/tn2143.html
which talks about getting images into Quartz Composer, although I
didn't see a patch that would load images directly from memory?
Any pointers to how I might be able to get this working would be
appreciated!
Thanks,
.l
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