[FFmpeg-cvslog] vp9: fix rounding error in idct_8x8_ssse3.
Ronald S. Bultje
git at videolan.org
Sat Sep 5 21:54:34 CEST 2015
ffmpeg | branch: master | Ronald S. Bultje <rsbultje at gmail.com> | Sat Sep 5 13:36:56 2015 -0400| [086c9b78d42fa6909ceb5f1fba935cb4f2b5c89a] | committer: Ronald S. Bultje
vp9: fix rounding error in idct_8x8_ssse3.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=086c9b78d42fa6909ceb5f1fba935cb4f2b5c89a
---
libavcodec/x86/vp9itxfm.asm | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/libavcodec/x86/vp9itxfm.asm b/libavcodec/x86/vp9itxfm.asm
index d9fb36f..e1cb637 100644
--- 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
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