[FFmpeg-cvslog] g723.1: replace loop of normalize_bits( by av_log2()

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Thu Sep 29 21:39:08 2011 +0200| [431f8af8242c41ef922f9daf791b0be26dc0bba4] | committer: Michael Niedermayer

g723.1: replace loop of normalize_bits( by av_log2()

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=431f8af8242c41ef922f9daf791b0be26dc0bba4
---

 libavcodec/g723_1.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavcodec/g723_1.c b/libavcodec/g723_1.c
index a48eca3..9c019a9 100644
--- a/libavcodec/g723_1.c
+++ b/libavcodec/g723_1.c
@@ -216,8 +216,8 @@ static int normalize_bits(int num, int width)
             return bits;
         if (num < 0)
             num = ~num;
-        for (i = 0; num < limit; i++)
-            num <<= 1;
+        i= bits - av_log2(num) - 1;
+        i= FFMAX(i, 0);
     }
     return i;
 }