From f5e177f8521c585a101eafc171be06de1a3d5b60 Mon Sep 17 00:00:00 2001
From: Vladimir Voroshilov <voroshil@gmail.com>
Date: Tue, 26 Aug 2008 16:47:31 +0000
Subject: (cosmetics) Describe for which tests clipping is required.

Originally committed as revision 14979 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/acelp_filters.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'libavcodec/acelp_filters.c')

diff --git a/libavcodec/acelp_filters.c b/libavcodec/acelp_filters.c
index 83db0efc8a..59db6497f6 100644
--- a/libavcodec/acelp_filters.c
+++ b/libavcodec/acelp_filters.c
@@ -156,6 +156,8 @@ void ff_acelp_high_pass_filter(
         tmp += (hpf_f[1]* -7667LL)>>13;
         tmp += 7699 * (in[i] - 2*in[i-1] + in[i-2]);
 
+        /* With "+0x800" rounding, clipping is needed
+           for ALGTHM and SPEECH tests. */
         out[i] = av_clip_int16((tmp + 0x800) >> 12);
 
         hpf_f[1] = hpf_f[0];
-- 
cgit v1.2.3