h264: fix ssse3 biweight code with weights of 128

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2011-11-05 21:37:44 +01:00 · 2011-11-05 21:37:44 +01:00 · fb2288834b
commit fb2288834b
parent 971701d4fc
1 changed files with 7 additions and 0 deletions
--- 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