[vlc-devel] [PATCH] video filter refactor (trying to reuse functions)

[Branko Kokanovic]

Hi,
As discussed in thread[1], I recently created "technical debt" when not
reusing existing functions. Since sepia filter is pushed, this patch now
tries to fix that. Not that much is changed, but end result is:
* posterize.c now contains only functions related to posterizing
* sepia.c now contains only functions related to sepia
* filter_picture.h now have three more functions:
** for getting packed rgb indexes
** yuv->rgb conversion and
** rgb->yuv conversion
* filter_picture.h's GetPackedYuvOffsets() functions got another case in
switch (VLC_CODEC_VYUY) because:
** sepia.c needs it (backward compatibility)
** I thought it should be there and
** it will not break existing filters that use it

blend.c got some more potential candidates for reusing, but I leaved
them there for now, and will move them to filter_picture.h if I ever use
them.

I tested posterize, blend and sepia filter with several different video
chromas, it all works.

I'm hoping this will pay my debts:)
Greetings, kokan

[1]
http://mailman.videolan.org/pipermail/vlc-devel/2010-November/077766.html
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