avcodec/x86/h264_weight: handle weight1=128

Fix ticket4596 Signed-off-by: Michael Niedermayer <michaelni@gmx.at> (cherry picked from commit e1009665)

avcodec/x86/h264_weight: handle weight1=128
Fix ticket4596 Signed-off-by: Michael Niedermayer <michaelni@gmx.at> (cherry picked from commit e1009665)
e29f68cf · Michael Niedermayer · Carl Eugen Hoyos · f621ae6a · e29f68cf
Commit e29f68cf authored Jun 09, 2015 by Michael Niedermayer Committed by Carl Eugen Hoyos Jun 19, 2015
Hide whitespace changes
Inline Side-by-side

Showing with 3 additions and 0 deletions

h264_weight.asm libavcodec/x86/h264_weight.asm +3 -0

No files found.
--- a/libavcodec/x86/h264_weight.asm
+++ b/libavcodec/x86/h264_weight.asm
@@ -135,8 +135,11 @@ WEIGHT_FUNC_HALF_MM 8, 8
    add  off_regd, 1
    or   off_regd, 1
    add        r4, 1
+    cmp        r6d, 128
+     je .nonnormal
    cmp        r5, 128
     jne .normal
+.nonnormal
    sar        r5, 1
    sar        r6, 1
    sar  off_regd, 1