From ce03319dd113b8a6c109414413ad01550f774d75 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Sat, 29 Jan 2011 01:03:05 +0000
Subject: prevent formation of new xfades when two regions are precisely
 co-terminal, and invalidate existing xfades if their participants become
 co-terminal

git-svn-id: svn://localhost/ardour2/branches/3.0@8605 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 libs/ardour/audio_playlist.cc | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'libs/ardour/audio_playlist.cc')

diff --git a/libs/ardour/audio_playlist.cc b/libs/ardour/audio_playlist.cc
index 01ffb0b9fb..c3d4bfc8de 100644
--- a/libs/ardour/audio_playlist.cc
+++ b/libs/ardour/audio_playlist.cc
@@ -446,6 +446,10 @@ AudioPlaylist::check_dependents (boost::shared_ptr<Region> r, bool norefresh)
 			continue;
 		}
 
+                if (other->position() == r->position() && other->length() == r->length()) {
+                        /* precise overlay of two regions - no xfade */
+                        continue;
+                }
 
 		if (other->layer() < region->layer()) {
 			top = region;
-- 
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