[FFmpeg-cvslog] doc: add dia_size option documentation

[Limin Wang]

ffmpeg | branch: master | Limin Wang <lance.lmwang at gmail.com> | Wed May 27 12:18:52 2020 +0800| [3c346298f98beb11b56e7839e1e5ea5fd968d8c5] | committer: Limin Wang

doc: add dia_size option documentation

Reviewed-by: Michael Niedermayer <michael at niedermayer.cc>
Signed-off-by: Limin Wang <lance.lmwang at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3c346298f98beb11b56e7839e1e5ea5fd968d8c5
---

 doc/codecs.texi | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/doc/codecs.texi b/doc/codecs.texi
index ece8d50edd..c092aadc0e 100644
--- a/doc/codecs.texi
+++ b/doc/codecs.texi
@@ -646,6 +646,24 @@ noise preserving sum of squared differences
 
 @item dia_size @var{integer} (@emph{encoding,video})
 Set diamond type & size for motion estimation.
+ at table @samp
+ at item (1024, INT_MAX)
+full motion estimation(slowest)
+ at item (768, 1024]
+umh motion estimation
+ at item (512, 768]
+hex motion estimation
+ at item (256, 512]
+l2s diamond motion estimation
+ at item [2,256]
+var diamond motion estimation
+ at item (-1,  2)
+small diamond motion estimation
+ at item -1
+funny diamond motion estimation
+ at item (INT_MIN, -1)
+sab diamond motion estimation
+ at end table
 
 @item last_pred @var{integer} (@emph{encoding,video})
 Set amount of motion predictors from the previous frame.