[x266] Initialize import and roadmap   (a) The code write during unemployment / unpaid leave period, it develop       on my personal laptop, I think all of code copyright is own by me.
[x266] Initialize import and roadmap
  (a) The code write during unemployment / unpaid leave period, it develop
      on my personal laptop, I think all of code copyright is own by me.

  (b) Based on (a), the development time and budget are very limited, so I
      have to put my eye on architecture design,
      as a rssult, the early preview will be functionally, but the code
      style are NOT good enough, I will refactor in future.

  (c.1) The Encoder source code write as a standalone x266.cpp, it helpful
        optimized with compiler and simplify code works on dynamic
        configurable function pointer.

  (c.2) The Encoder primary target to mobile device, my goal is compare to
        the x264, the speed performance less than 1.4x and compression
        ratio more than 1.3x.

  (c.3) There will be a series plugins interface, such fast mode decide,
        early termination, GPU, task queue, etc.

  (c.4) I will support RDO framework but limited, because mobile device
        need more trade-off in between compression and speed performance,
        I will try to find a balance over there.

  (End) Sorry for my terribe English.

chenm001/x266,chenm001/x266,chenm001/x266,chenm001/x266