From: Michael Niedermayer <michaelni@gmx.at>
Date: Mon, 25 Aug 2008 22:51:47 +0000 (+0000)
Subject: Replace cliping in ff_acelp_interpolate() by a check&av_log, this should be the
X-Git-Tag: v0.5~2927
X-Git-Url: http://git.ffmpeg.org/gitweb/ffmpeg.git/commitdiff_plain/2ad0d96a24879b96153a3fbbc1707372baa2615e

Replace cliping in ff_acelp_interpolate() by a check&av_log, this should be the
quickest way to find out if it is needed.

Originally committed as revision 14970 to svn://svn.ffmpeg.org/ffmpeg/trunk
---

diff --git a/libavcodec/acelp_filters.c b/libavcodec/acelp_filters.c
index b5a6660..581da30 100644
--- a/libavcodec/acelp_filters.c
+++ b/libavcodec/acelp_filters.c
@@ -75,7 +75,9 @@ void ff_acelp_interpolate(
             i++;
             v += in[n - i] * filter_coeffs[idx - frac_pos];
         }
-        out[n] = av_clip_int16(v >> 15);
+        if(av_clip_int16(v>>15) != (v>>15))
+            av_log(NULL, AV_LOG_WARNING, "overflow that would need cliping in ff_acelp_interpolate()\n");
+        out[n] = v >> 15;
     }
 }