second attempt.

i thought about the yuyv-topic again. a packed yuv422 buffer can be
transformed into a planar yuv422 buffer. this way you get 3 buffers. one for
Y (size is T), one for U (size T/2) and one for V (T/2). can't this buffer
be accessed like those vga 4-bit plane-buffers ??

i really this a ggi-support for this topic and need your opinions and
suggestions to set something up that take care of colorspaces != RGB.

andy, marcus: your last responses went into diffrent directions. can we come
to a comment point of view ??

thats all
  Jan

--- 
      -)=  Jan Kneschke -- Kiel -- Germany -- http://www.kneschke.de =(-

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