From 35703cb3fc60e11e2ee2b1c5d231cc5710f6a672 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Sat, 3 Aug 2013 03:44:51 +0200
Subject: [PATCH] properly handle port removal in route.

bug:
 - add midi track
 - add additional midi port
 - remove additional midi port
 - press play
 -> crash

because..

ARDOUR::MidiTrack::roll's route_buffer still has 2 midi-channels. This is
because processor_max_streams was not updated (no plugins added/removed)
fill_buffers_with_input() eventually asserts when trying to get the 2nd
(nonexistant) midi port via ARDOUR::PortSet::nth_midi_port() in
 ARDOUR::PortSet::port().
---
 libs/ardour/route.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libs/ardour/route.cc b/libs/ardour/route.cc
index 77e538cfe9..2e1517fe21 100644
--- a/libs/ardour/route.cc
+++ b/libs/ardour/route.cc
@@ -1708,6 +1708,7 @@ Route::configure_processors_unlocked (ProcessorStreams* err)
 	ChanCount out;
 	bool seen_mains_out = false;
 	processor_out_streams = _input->n_ports();
+	processor_max_streams.reset();
 
 	list< pair<ChanCount,ChanCount> >::iterator c = configuration.begin();
 	for (ProcessorList::iterator p = _processors.begin(); p != _processors.end(); ++p, ++c) {