[Bug 679522] [isomp4] Export transformation matrix

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=679522
  GStreamer | gst-plugins-good | 0.11.x

--- Comment #9 from Mohammed Sameer <msameer at foolab.org> 2013-11-07 11:55:15 UTC ---
The more I think about the matrix the more I realize that we should not try to
hide it.

I think we should export the matrix as it is (like we do with codec_data for
example).

Each sink can then act on the matrix as it sees fit.

Adding a buffer meta would do also but the only field it will carry is going to
be the matrix itself since the transformation might be scaling, rotation and
translation and we should not drop the rest and export the rotation only.

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