Aspect Ratio DS filter

Dear All,

I am looking for a transform directshow filter that can adjust the AR of a
video; While there are many filters intended for adjusting various formats
to a 4:3 (ie. letterbox) display, I found none able to do the opposite:
adjust various input formats to a 16:9 display (with non square pixels). I
want it for my own usage: being able to use a DVB app (my theatre) on my
16:9 display TV, adjusting aspect ratio on the fly depending on what is on
air.

So I started to look how to write one; I eventually achieved to recompile
the filter samples that come with the directshow SDK. But digging into video
and the microsoft vagaries is complex for a newbie in that field.

My filter should:
- read and write the same format and resolution (preferably YUY2(16)), but
resolution depend on channels watched
- resize and crop the image depending on what is needed
- add black bars on top or side depending on what's needed.

I am looking for some filter sample source code (not overly complex: ffdshow
was of no use :-( that I can modify; especially :
- Handling of YUY2 format; a null transform filter would be great!
- A resizing filter (the bicubic resizing filter by Wanton is great!!!
unfortunately the source code is not available :-((

Doee anyone knows if such a filter exist, or give pointers to source code
samples?

Thanks to all,

Michel

mgouget hat computer dott org


.

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