From 1feaa65d167e59b400b8ac003f69e33934ee7c08 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Mon, 3 Dec 2012 21:39:59 +0000
Subject: do not try to write from JackMIDIPort::write() if we are disconnected
 from JACK. should fix erroneous behaviour when MMC tries to send stop
 messages after JACK disconnects

git-svn-id: svn://localhost/ardour2/branches/3.0@13594 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 libs/midi++2/jack_midi_port.cc | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'libs')

diff --git a/libs/midi++2/jack_midi_port.cc b/libs/midi++2/jack_midi_port.cc
index 10274ad859..ff26a84e4b 100644
--- a/libs/midi++2/jack_midi_port.cc
+++ b/libs/midi++2/jack_midi_port.cc
@@ -214,6 +214,13 @@ JackMIDIPort::write (const byte * msg, size_t msglen, timestamp_t timestamp)
 {
 	int ret = 0;
 
+	if (!_jack_client || !_jack_port) {
+		/* poof ! make it just vanish into thin air, since we are no
+		   longer connected to JACK.
+		*/
+		return msglen;
+	}
+
 	if (!sends_output()) {
 		return ret;
 	}
-- 
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