[FFmpeg-cvslog] avcodec/x86/h264_weight: handle weight1=128

[Michael Niedermayer]

ffmpeg | branch: release/2.5 | Michael Niedermayer <michaelni at gmx.at> | Tue Jun  9 05:11:09 2015 +0200| [e29f68cf9e336b685362f56e6a45d574af97a770] | committer: Carl Eugen Hoyos

avcodec/x86/h264_weight: handle weight1=128

Fix ticket4596

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit e1009665759d4a3938dd2dd07b7e84d8bc9c5290)

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e29f68cf9e336b685362f56e6a45d574af97a770
---

 libavcodec/x86/h264_weight.asm |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavcodec/x86/h264_weight.asm b/libavcodec/x86/h264_weight.asm
index b4fb9db..1e1219d 100644
--- 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