[FFmpeg-cvslog] avcodec/g723_1enc: Remove unnecessary av_clipl_int32()

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at outlook.com> | Wed Sep 28 19:17:56 2022 +0200| [e47f3e366bc0760dbd44b5d555c1bb601a1d5011] | committer: Andreas Rheinhardt

avcodec/g723_1enc: Remove unnecessary av_clipl_int32()

partial_corr is an int16_t and so the av_clipl_int32()
never clips and can be removed. This also avoids
undefined left-shifts of negative numbers.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e47f3e366bc0760dbd44b5d555c1bb601a1d5011
---

 libavcodec/g723_1enc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/libavcodec/g723_1enc.c b/libavcodec/g723_1enc.c
index f3baf7b4ec..a22985ca44 100644
--- a/libavcodec/g723_1enc.c
+++ b/libavcodec/g723_1enc.c
@@ -200,8 +200,7 @@ static void levinson_durbin(int16_t *lpc, int16_t *autocorr, int16_t error)
 
         partial_corr = temp / (error << 1);
 
-        lpc[i] = av_clipl_int32((int64_t) (partial_corr << 14) +
-                                (1 << 15)) >> 16;
+        lpc[i] = (partial_corr + (1 << 1)) >> 2;
 
         /* Update the prediction error */
         temp  = MULL2(temp, partial_corr);