[gstreamer-bugs] [Bug 627768] add NV12 support to textoverlay

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=627768
  GStreamer | gst-plugins-base | git

--- Comment #8 from Rob Clark <rob at ti.com> 2010-08-30 20:23:36 UTC ---
Created an attachment (id=169124)
 View: https://bugzilla.gnome.org/attachment.cgi?id=169124
 Review: https://bugzilla.gnome.org/review?bug=627768&attachment=169124

fix Cb/Cr inversion that previously existed with NV12/NV21/UYVY

In case of odd values for xpos or ypos, the division by two in CbCr
plane would result in an off-by-one error, which in the case of NV12,
NV21, or UYVY would cause inversion of blue and red colors.  (And
would be not so easily noticed for I420 as it would just cause the
chroma to be offset slightly from the luma.)

This patch also fixes a silly typo from the earlier patch which
added NV12 support that broke UYVY support.

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