ffmpeg | branch: master | Peter Meerwald <pme...@pmeerw.net> | Fri Feb 20 01:35:34 2015 +0100| [76ce9bd8e26dcb3652240a1072840ff4011d7cdc] | committer: Luca Barbato
libavutil: Add ARM av_clip_intp2_arm add ARM code for implementing av_clip_intp2 using the ssat instruction on Cortex-A8, av_clip_intp2_arm() is faster than av_clip_intp2_c() and the generic av_clip(), about -19% Signed-off-by: Peter Meerwald <pme...@pmeerw.net> Signed-off-by: Luca Barbato <lu_z...@gentoo.org> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=76ce9bd8e26dcb3652240a1072840ff4011d7cdc --- libavutil/arm/intmath.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/libavutil/arm/intmath.h b/libavutil/arm/intmath.h index 56fcdb3..2b15ba0 100644 --- a/libavutil/arm/intmath.h +++ b/libavutil/arm/intmath.h @@ -62,6 +62,14 @@ static av_always_inline av_const int av_clip_int16_arm(int a) return x; } +#define av_clip_intp2 av_clip_intp2_arm +static av_always_inline av_const int av_clip_intp2_arm(int a, int p) +{ + unsigned x; + __asm__ ("ssat %0, %2, %1" : "=r"(x) : "r"(a), "i"(p+1)); + return x; +} + #define av_clip_uintp2 av_clip_uintp2_arm static av_always_inline av_const unsigned av_clip_uintp2_arm(int a, int p) { _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
