[FFmpeg-cvslog] evrcdec: fix sign error

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sat May  4 02:47:58 2013 +0200| [f18d2dff1194b34b79dc7641aafe54d1df349e40] | committer: Michael Niedermayer

evrcdec: fix sign error

The specification wants round(abs(x))) * sign(x) which is
equivakent to round(x)

Fixes out of array access

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f18d2dff1194b34b79dc7641aafe54d1df349e40
---

 libavcodec/evrcdec.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/evrcdec.c b/libavcodec/evrcdec.c
index f0e594f..f104e33 100644
--- a/libavcodec/evrcdec.c
+++ b/libavcodec/evrcdec.c
@@ -374,7 +374,7 @@ static void bl_intrp(EVRCContext *e, float *ex, float delay)
     int offset, i, coef_idx;
     int16_t t;
 
-    offset = lrintf(fabs(delay));
+    offset = lrintf(delay);
 
     t = (offset - delay + 0.5) * 8.0 + 0.5;
     if (t == 8) {