The algorithm works on src and writes to dst, not the other way
around.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Makes it easier to understand that there is no difference in init
callback for movie and amovie. Also saves a few lines of code.
Signed-off-by: Alexander Strasser <eclipse7@gmx.net>
The drawbox video filter is drawing lines one pixel thinner than
requested. The default thickness is 4 pixel but in fact the lines
drawn by default are only 3 pixel wide.
Change the comparisons in the code to fix this off-by-one bug. Also
change the default thickness from 4 to 3 to minimize the unexpected
changes from the user's perspective.
As I was already touching these lines, I also removed the "maximum" in
the thickness parameter description, as I don't think it was adding
any value and I even found it confusing.
Reviewed-by: Andrey Utkin <andrey.krieger.utkin@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Based on the libavfilter SOC filter by Vitor Sessak, with the following additions:
* integer arithmetic
* bilinear interpolation
* RGB path
* configurable parametric angle, output width and height
Address trac issue #1500.
See thread:
Subject: [FFmpeg-devel] [WIP] rotate filter(s)
Date: 2010-10-03 17:35:49 GMT
w/h from input frame are not copied in av_frame_copy_props(). This
commit avoids a mismatch between aligned_[wh] and outbuf->{width,height}
(and thus avoids triggering an assert in avfilter because of this).
Do not read padding or out-of-buffer values when computing the output
value for a pixel close to the image buffer edge.
This avoids non visible artifacts which affected the output checksum.
See thread:
Subject: [FFmpeg-devel] [PATCH] lavfi/mp/mcdeint: avoid uninited data read
Date: Thu, 30 May 2013 18:57:14 +0200