• Paul Wilkins's avatar
    Animation and dead zone detection. · 668e8045
    Paul Wilkins authored
    Adds code to detect dead zone bars at the top and bottom
    of reformatted letterbox video (note that the code only
    looks at the top of the image and assumes any dead zone
    is symmetrical).  Use of this to adapt rate control etc.
    will follow in a subsequent patch.
    Also counts other blocks (excluding the dead zone) that
    have no intra signal. The presence of a significant
    number of such blocks can be used as a identify that the frame
    may be artificial (e.g.  animation, screen capture, graphics).
    This patch contains plumbing only and does not use
    the signal.
    Change-Id: I59bc93529cd4065416cef773e405fda3ae006a20