Interpolating Bob 0.10

Copyright 2003 Kevin Atkinson under the GPL 2.0

It requires version by Avisynth C API Plugin version 0.14 or better.
The required dll, avisynth_c.dll, is included.  You can find the full
version at http://kevin.atkinson.dhs.org/avisynth_c/.

This simple filter works identically to the Avisynth builtin Bob filter
except that it uses linear interpolation instead of bicubic resizing.
It usage is simple:
  IBob()

The advantages of IBob over the builtin Bob is:

1) The lines of the dominate field are untouched.  In particular
   
    assumetff()
    orig = last
    ibob()
    assumetff().separatefields().selectevery(4,0,3).weave()
    compare(last,orig)

Will report 0 difference between the original and the bob than unbobed
video (when the video format is yuy2, with yv12 the chroma will be
slightly different).  With the builtin bob this is not the case.

2) A bit faster than the builtin bob.

In can be made even faster by 1) dynamically compiling key parts to
reduce register pressure and take advantage of the "base + index +
displacement" addressing mode, and by 2) using vector extensions.

COPYRIGHT

Everything in the distribution is Copyright 2003 Kevin Atkinson.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA, or visit
http://www.gnu.org/copyleft/gpl.html.