[FFmpeg-devel] [PATCH] doc/filters: Document geq *sum functions

Michael Niedermayer michael at niedermayer.cc
Sat Dec 28 12:28:44 EET 2019

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
 doc/filters.texi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/doc/filters.texi b/doc/filters.texi
index 57330d1fd9..4d255d57c6 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -11374,6 +11374,10 @@ red/green/blue component. Return 0 if there is no such component.
 Return the value of the pixel at location (@var{x}, at var{y}) of the alpha
 plane. Return 0 if there is no such plane.
+ at item psum(x,y), lumsum(x, y), cbsum(x,y), crsum(x,y), rsum(x,y), gsum(x,y), bsum(x,y), alphasum(x,y)
+Sum of sample values in the rectangle from (0,0) to (x,y), this allows obtaining
+sums of samples within a rectangle. See the functions without the sum postfix.
 @item interpolation
 Set one of interpolation methods:
 @table @option

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