From 0e2c6762f0f9a90ffda54464aa42da36f0562e99 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <superjoe30@gmail.com>
Date: Wed, 15 Jul 2009 11:42:26 -0700
Subject: [PATCH] AudioFileMp3 - fixed clipping issue

AudioFileMp3::rescale was missing a clip boundary on -1 and thus
could have caused artifacts in exported MP3s. Fixed.
---
 src/core/audio/audio_file_mp3.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/audio/audio_file_mp3.cpp b/src/core/audio/audio_file_mp3.cpp
index 0ba4cbe89..270740fcf 100644
--- a/src/core/audio/audio_file_mp3.cpp
+++ b/src/core/audio/audio_file_mp3.cpp
@@ -149,7 +149,7 @@ bool AudioFileMp3::startEncoding( void )
 
 
 short int AudioFileMp3::rescale(float sample) {
-    return (qMin<float>(sample, 1) / 1) * std::numeric_limits<short int>::max();
+    return (qMax<float>(qMin<float>(sample, 1), -1) / 1) * std::numeric_limits<short int>::max();
 }
 
 // encode data and write to file