From 96613df7830699dbbfb5c2d9fe3ebdb0598e6aca Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Fri, 29 Jan 2010 04:35:48 +0000
Subject: Remove references to deleted ports with control bindings (fix crash
 when applying binding to deleted port).

git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@2393 a436a847-0d15-0410-975c-d299462d15a1
---
 src/engine/ControlBindings.cpp | 34 ++++++++++++++++++++++++++++++----
 1 file changed, 30 insertions(+), 4 deletions(-)

(limited to 'src/engine/ControlBindings.cpp')

diff --git a/src/engine/ControlBindings.cpp b/src/engine/ControlBindings.cpp
index b74a3124..2c2a1888 100644
--- a/src/engine/ControlBindings.cpp
+++ b/src/engine/ControlBindings.cpp
@@ -60,7 +60,7 @@ ControlBindings::set_port_value(ProcessContext& context, PortImpl* port, int8_t
 void
 ControlBindings::bind(ProcessContext& context, int8_t cc_num)
 {
-	_bindings.insert(make_pair(cc_num, _learn_port));
+	_bindings->insert(make_pair(cc_num, _learn_port));
 
 	const Events::SendBinding ev(context.engine(), context.start(), _learn_port,
 			MessageType(MessageType::MIDI_CC, cc_num));
@@ -70,6 +70,30 @@ ControlBindings::bind(ProcessContext& context, int8_t cc_num)
 }
 
 
+SharedPtr<ControlBindings::Bindings>
+ControlBindings::remove(const Raul::Path& path)
+{
+	ThreadManager::assert_thread(THREAD_PRE_PROCESS);
+
+	SharedPtr<Bindings> old_bindings = _bindings;
+
+	SharedPtr<Bindings> copy(new Bindings(*_bindings.get()));
+
+	for (Bindings::iterator i = copy->begin(); i != copy->end();) {
+		Bindings::iterator next = i;
+		++next;
+
+		if (i->second->path() == path || i->second->path().is_child_of(path))
+			copy->erase(i);
+
+		i = next;
+	}
+
+	_bindings = copy;
+	return old_bindings;
+}
+
+
 void
 ControlBindings::process(ProcessContext& context, EventBuffer* buffer)
 {
@@ -79,6 +103,8 @@ ControlBindings::process(ProcessContext& context, EventBuffer* buffer)
 	uint16_t size      = 0;
 	uint8_t* buf       = NULL;
 
+	SharedPtr<Bindings> bindings = _bindings;
+
 	if (_learn_port) {
 		buffer->rewind();
 		while (buffer->get_event(&frames, &subframes, &type, &size, &buf)) {
@@ -91,14 +117,14 @@ ControlBindings::process(ProcessContext& context, EventBuffer* buffer)
 		}
 	}
 
-	if (!_bindings.empty()) {
+	if (!bindings->empty()) {
 		buffer->rewind();
 		while (buffer->get_event(&frames, &subframes, &type, &size, &buf)) {
 			if (type == _map->midi_event && (buf[0] & 0xF0) == MIDI_CMD_CONTROL) {
 				const int8_t controller = static_cast<const int8_t>(buf[1]);
 				const int8_t value      = static_cast<const int8_t>(buf[2]);
-				Bindings::const_iterator i = _bindings.find(controller);
-				if (i != _bindings.end()) {
+				Bindings::const_iterator i = bindings->find(controller);
+				if (i != bindings->end()) {
 					set_port_value(context, i->second, value);
 				}
 			}
-- 
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