[MPlayer-dev-eng] [PATCH] new filter: levels

[Michael Niedermayer]

Hi

On Thursday 02 September 2004 21:02, James Crowson wrote:
> levels[=black_level:white_level[:mode]]
>        Sets  the  black  and  white levels to new values.  Defaults are
>        black_level=16, white_level=235 (no effect).  This  filter  sup-
>        ports two modes of operation:
>
>           c    In ’c’ompress mode (default), the entire intensity range
>                of the input will be compressed into the intensity range
>                black_level-white_level in the output.  This can be used
>                to make images less contrasty, and a range of  the  form
>                n-235  (where  n > 16) can be used to compensate for too
>                low of a black level on the output device.
>
>           e    In  ’e’xpand  mode,  the  intensity  range  black_level-
>                white_level  of  the input will be expanded into the en-
>                tire intensity range of the output.  This can be used to
>                fix  washed-out source material.  Raise black_level from
>                16 until the darkest intensity  in  the  source  becomes
>                true  black,  and  lower  white_level from 235 until the
>                lightest intensity in the source becomes true white.
rejected, we already have 2 filters which are capable of doing this, and they 
are also much better optimized
maybe u want to extend the eq2 filter so it can be directly feeded with 
black/white levels, something like eq2=c:123:345 / eq2=e:123:345 maybe

[...]
-- 
Michael
level[i]= get_vlc(); i+=get_vlc();  (violates patent EP0266049)
median(mv[y-1][x], mv[y][x-1], mv[y+1][x+1]); (violates patent #5,905,535)
buf[i]= qp - buf[i-1];    (violates patent #?)
for more examples, see http://mplayerhq.hu/~michael/patent.html
stop it, see http://petition.eurolinux.org & http://petition.ffii.org/eubsa/en