swscale doesnt ever actually do any runtime detection at all when
runtime cpu detection is enabled, it simply passes whatever is passed
to -sws_flags, which could be nothing at all making swscale default to
the C implementation.
Heres a benchmark
VOFW 5120 VOFW 21504 Note
10438.8 10344.2 timex ffmpeg -y -i tulip2.mp4 tulip2.yuv
25611.9 24256.9 timex ffmpeg -y -itulip2.mp4 -s 1272x724 tulip2.yuv
24485.7 26006.6
28573.1 24291.3
24069.1 26995.9
25684.95 25387.675 average
This is on a Nehalem i7. Despite being a 500 frame, 720p video, the numbers
fluctuate, so I took an average of 4 runs.
Another reason I'd like this change is youtube accepts videos with higher
resolutions than 5120.
16384 is vp8's maximum resolution, so that should keep us amused for a
little longer.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
It is pretty hopeless that other considerable projects will adopt
libavutil alone in other projects. Projects that need small footprint
are better off with more specialized libraries such as gnulib or rather
just copy the necessary parts that they need. With this in mind, nobody
is helped by having libavutil and libavcore split. In order to ease
maintenance inside and around FFmpeg and to reduce confusion where to
put common code, avcore's functionality is merged (back) to avutil.
Signed-off-by: Reinhard Tartler <siretart@tauware.de>
When built with gcc 4.6, the MMX rgb24 to yuv conversion gives
wrong output. The compiler produces this warning:
libswscale/swscale_template.c:1885:5: warning: use of memory input without lvalue in asm operand 4 is deprecated
Changing the memory operand to a register makes it work.
Signed-off-by: Mans Rullgard <mans@mansr.com>
rgb32tobgr32() has been removed in favour of shuffle_bytes_2103() in r32190
Originally committed as revision 32676 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
handle_jpeg may update the src/dstFormat variables, this makes sure the
updated version is stored in the context.
This fixes roundup issue 2302.
Patch by Troot, all_crap_goes_here at hotmail
Originally committed as revision 32562 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
but worse it did not set up destination dimensions, thus every user
of it would necessarily fail.
Originally committed as revision 32424 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
scale context. Prevent pointless warnings when using
av_opt_set_defaults() for setting the default values, as in a pending
patch.
Originally committed as revision 32413 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
instead of requireing being passed through function parameters. This also
makes sws work with AVOptions.
Originally committed as revision 32368 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
If the CRC from the src->dst conversion matches a reference, it is not
necessary to perform a dst->yuva420p conversion and check the SSD.
Originally committed as revision 32213 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
The source format parameters are kept in static variables and conversion from
ref to source is only made when any parameter changes.
Originally committed as revision 32211 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
