Hello,

for video support I think aRts needs some kind
of signal mechanism.

Example:

kwintv creates an arts image and gets the pointers
to the destination over shared mem.
Then it writes data to it and
calls something like image->out()

and the image is passed through the filter
graph (and to the display at the end)
But what should kwintv do after image->out() ?

It needs to know, when the image is
available again, and for performance reasons
a poll is out of question.

Is there a way to signal the remote client
a image_avail() or something like that?
One option would be to put a semaphore into
shm and let the client block after the 
image->out().

Martin

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