h264: fix ssse3 biweight code with weights of 128

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

h264: fix ssse3 biweight code with weights of 128
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
fb228883 · Michael Niedermayer · 971701d4 · fb228883
Commit fb228883 authored Nov 05, 2011 by Michael Niedermayer
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h264_weight.asm libavcodec/x86/h264_weight.asm +7 -0

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--- a/libavcodec/x86/h264_weight.asm
+++ b/libavcodec/x86/h264_weight.asm
@@ -257,6 +257,13 @@ BIWEIGHT_FUNC_HALF_MM 8, 8, sse2
    add  off_regd, 1
    or   off_regd, 1
    add        r4, 1
+    cmp        r5, 128
+     jne .normal
+    sar        r5, 1
+    sar        r6, 1
+    sar  off_regd, 1
+    sub        r4, 1
+.normal
    movd       m4, r5d
    movd       m0, r6d
    movd       m5, off_regd