greetings v4l fans,
i'm pretty new to video so please excuse me if i'm not totally clear.
awhile ago someone wanted to put a memory mapped image on the screen.
i would like to do a similar but opposite thing. i would like
to take an image from the computer and display it on my tv screen.
i'm using the LML33 video in/out card. for this exercise i'm not
using the video input. my tv is connected to the LML33 video out.
i can grab an image from the computer screen using xv, save it in
raw ppm format, decode it to its YUV components, and jpeg compress it.
it can then be displayed on the screen using the LML33. i've tested
this and it works.
what i need to do now is come up with an interface that will allow
an arbitrary program to send it an image instead of using xv.
does such a thing exist? is it part of v4l? have any of you
put together such a thing? any suggestions of how i might design
such an interface?
by the way, this is a proof-of-concept phase. the implementation
can be slow and kludgy. for example, my final step is to create
an interlaced image by simply concatenating two copies of the
same image together. doesn't look so great, but it works.
any ideas?
michael
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