[FFmpeg-devel] Support MXF separate fields layout with interlaced j2k

[Matthieu Bouron]

Hello,

This serie of patches tends to fix ticket #1102 by supporting mxf
separate fields layout with jpeg2000 codec (libopenjpeg only).

Last patch introduce the full frame reconstuction within the
libopenjpeg decoder if field_order is not unknown nor progressive.

The problem with this implementation is that the frame threading must be
disabled manually by the user, if not, no frame is decoded and an
error message is displayed to the user.

Afaik, the same result might be achieved with the tinterlace filter without
this extra code however it feels more confortable to me to have a "native"
support.

Please comment,
Matthieu