From 91caa09c2e4021dcda1af79360527d0f15b2a4cd Mon Sep 17 00:00:00 2001
From: Eric Wong <normalperson@yhbt.net>
Date: Thu, 29 Aug 2013 09:52:26 +0000
Subject: rg: avoid adding gain if fallback_gain + preamp is near zero

No need to add the vol effect if it's going to be a noop.
---
 lib/dtas/rg_state.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'lib')

diff --git a/lib/dtas/rg_state.rb b/lib/dtas/rg_state.rb
index a6c56f5..1cf97c7 100644
--- a/lib/dtas/rg_state.rb
+++ b/lib/dtas/rg_state.rb
@@ -74,8 +74,10 @@ class DTAS::RGState # :nodoc:
   # tag slips into the queue
   def rg_fallback_effect(reason)
     @fallback_gain or return
+    val = @fallback_gain + @preamp
+    return if val.abs < @gain_threshold
     warn(reason) if $DEBUG
-    "vol #{@fallback_gain + @preamp}dB"
+    "vol #{val}dB"
   end
 
   # returns an array (for command-line argument) for the effect needed
-- 
cgit v1.2.3-24-ge0c7