virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-12 19:18:44 +02:00
Code Issues Releases Activity
69,409 Commits 37 Branches 400 Tags 463 MiB
64815d1f0c
Commit Graph

6 Commits

Author SHA1 Message Date
James Almer
ddea3b7106 x86/yadif-10: remove duplicate ABS macro 
And use the x86util ones instead, which are optimized for mmxext/sse2.
About ~1% increase in performance on pre SSSE3 processors.

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-07-10 21:06:51 +02:00
Christophe Gisquet
9107612818 x86util: add and use RSHIFT/LSHIFT macros 
Those macros take a byte number as shift argument, as this argument
differs between MMX and SSE2 instructions.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-15 13:19:27 +02:00
Robert Krüger
194ef56ba7 Change license of yadif from GPL to LGPL 
Signed-off-by: Robert Krüger <krueger@lesspain.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-01-14 14:19:15 +01:00
James Darnley
c9a51c29fc yadif: remove an 'm' from the LOAD macro definition 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-03-16 22:33:49 +01:00
James Darnley
1d3b14cac2 yadif: remove repeated check on width 
The filter already checks that width (and height) are greater than 3.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-03-16 22:33:30 +01:00
James Darnley
0a5814c9ba yadif: x86 assembly for 9 to 14-bit samples 
These smaller samples do not need to be unpacked to double words
allowing the code to process more pixels every iteration (still 2 in MMX
but 6 in SSE2).  It also avoids emulating the missing double word
instructions on older instruction sets.

Like with the previous code for 16-bit samples this has been tested on
an Athlon64 and a Core2Quad.

Athlon64:
1809275 decicycles in C,    32718 runs, 50 skips
 911675 decicycles in mmx,  32727 runs, 41 skips, 2.0x faster
 495284 decicycles in sse2, 32747 runs, 21 skips, 3.7x faster

Core2Quad:
 921363 decicycles in C,     32756 runs, 12 skips
 486537 decicycles in mmx,   32764 runs,  4 skips, 1.9x faster
 293296 decicycles in sse2,  32759 runs,  9 skips, 3.1x faster
 284910 decicycles in ssse3, 32759 runs,  9 skips, 3.2x faster

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-03-16 22:32:54 +01:00