[gstreamer-bugs] [Bug 529500] [videotestsrc] support for NV12 and NV21

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-base | Ver: HEAD CVS




------- Comment #6 from David Schleef  2008-04-25 02:12 UTC -------
Rounding rules are based on what X drivers use, which is generally the same as
what DirectShow/Video for Windows uses, which is generally the same as whatever
the underlying hardware requires.

In general, Y sizes are rounded up to multiples of U and V sizes, and then the
row strides are rounded up to 4.  The latter comes from wanting rows to be
disjoint runs of uint32_t's, because of PCI bus issues.  I'd be willing to
accept code that follows these rules without outside verification.


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