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vp9: fix rounding error in idct_8x8_ssse3.
author
Ronald S. Bultje
<rsbultje@gmail.com>
Sat, 5 Sep 2015 17:36:56 +0000
(13:36 -0400)
committer
Ronald S. Bultje
<rsbultje@gmail.com>
Sat, 5 Sep 2015 19:50:02 +0000
(15:50 -0400)
libavcodec/x86/vp9itxfm.asm
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diff --git
a/libavcodec/x86/vp9itxfm.asm
b/libavcodec/x86/vp9itxfm.asm
index
d9fb36f
..
e1cb637
100644
(file)
--- a/
libavcodec/x86/vp9itxfm.asm
+++ b/
libavcodec/x86/vp9itxfm.asm
@@
-527,10
+527,9
@@
IADST4_FN iadst, IADST4, iadst, IADST4, ssse3
pmulhrsw m2, [pw_6270x2] ; m2=t2a
pmulhrsw m7, m1, [pw_16069x2] ; m7=t7a
pmulhrsw m1, [pw_3196x2] ; m1=t4a
- pmulhrsw m5, m3, [pw_
9102x2] ; m5=-
t5a
+ pmulhrsw m5, m3, [pw_
m9102x2] ; m5=
t5a
pmulhrsw m3, [pw_13623x2] ; m3=t6a
SUMSUB_BA w, 5, 1, 4 ; m1=t4a+t5a (t4), m5=t4a-t5a (t5a)
- SWAP 1, 5
SUMSUB_BA w, 3, 7, 4 ; m3=t7a+t6a (t7), m7=t7a-t6a (t6a)
SUMSUB_BA w, 1, 7, 4 ; m1=t6a+t5a (t6), m7=t6a-t5a (t5)
pmulhrsw m1, W_11585x2_REG ; m1=t6