From 0bf73b59335d917400c18ae9d664226c1a4da4c2 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Fri, 28 Nov 2008 01:26:54 +0000
Subject: MIDI learn for note trigger node.

git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@1812 a436a847-0d15-0410-975c-d299462d15a1
---
 src/engine/MidiTriggerNode.cpp       | 9 +++++++++
 src/engine/MidiTriggerNode.hpp       | 4 ++++
 src/engine/NodeBase.hpp              | 2 ++
 src/engine/events/MidiLearnEvent.cpp | 6 ++----
 src/gui/NodeMenu.cpp                 | 3 ++-
 5 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/src/engine/MidiTriggerNode.cpp b/src/engine/MidiTriggerNode.cpp
index c68a0b96..0212154a 100644
--- a/src/engine/MidiTriggerNode.cpp
+++ b/src/engine/MidiTriggerNode.cpp
@@ -34,6 +34,7 @@ namespace Ingen {
 MidiTriggerNode::MidiTriggerNode(const string& path, bool polyphonic, PatchImpl* parent, SampleRate srate, size_t buffer_size)
 	: NodeBase(new InternalPlugin(NS_INGEN "trigger_node", "trigger", "Trigger"),
 			path, false, parent, srate, buffer_size)
+	, _learning(false)
 {
 	_ports = new Raul::Array<PortImpl*>(5);
 
@@ -106,6 +107,14 @@ MidiTriggerNode::note_on(ProcessContext& context, uchar note_num, uchar velocity
 {
 	assert(time >= context.start() && time <= context.end());
 	assert(time - context.start() < _buffer_size);
+	
+	if (_learning) {
+		_note_port->set_value(note_num);
+		((AudioBuffer*)_note_port->buffer(0))->set_value(
+				(float)note_num, context.start(), context.end());
+		_note_port->broadcast_value(context, true);
+		_learning = false;
+	}
 
 	/*cerr << "[MidiTriggerNode] " << path() << " Note " << (int)note_num << " on @ " << time << endl;*/
 
diff --git a/src/engine/MidiTriggerNode.hpp b/src/engine/MidiTriggerNode.hpp
index ba96589b..413b8102 100644
--- a/src/engine/MidiTriggerNode.hpp
+++ b/src/engine/MidiTriggerNode.hpp
@@ -46,8 +46,12 @@ public:
 	
 	void note_on(ProcessContext& context, uchar note_num, uchar velocity, FrameTime time);
 	void note_off(ProcessContext& context, uchar note_num, FrameTime time);
+	
+	void learn() { _learning = true; }
 
 private:
+	bool _learning;
+
 	InputPort*  _midi_in_port;
 	InputPort*  _note_port;
 	OutputPort* _gate_port;
diff --git a/src/engine/NodeBase.hpp b/src/engine/NodeBase.hpp
index 3626f6b9..790e6b72 100644
--- a/src/engine/NodeBase.hpp
+++ b/src/engine/NodeBase.hpp
@@ -69,6 +69,8 @@ public:
 	virtual void     process_unlock();
 	virtual void     wait_for_input(size_t num_providers);
 	virtual unsigned n_inputs_ready() const { return _n_inputs_ready.get(); }
+
+	virtual void learn() {}
 	
 	virtual void message_process(MessageContext& context, uint32_t* output) {}
 
diff --git a/src/engine/events/MidiLearnEvent.cpp b/src/engine/events/MidiLearnEvent.cpp
index b542eccd..8c2439a2 100644
--- a/src/engine/events/MidiLearnEvent.cpp
+++ b/src/engine/events/MidiLearnEvent.cpp
@@ -51,11 +51,9 @@ MidiLearnEvent::execute(ProcessContext& context)
 	QueuedEvent::execute(context);
 	
 	if (_node != NULL) {
-	   if (_node->plugin_impl()->type() == Plugin::Internal
-				&& _node->plugin_impl()->uri() == "http://drobilla.net/ns/ingen#control_node") {
-			((MidiControlNode*)_node)->learn();
+	   if (_node->plugin_impl()->type() == Plugin::Internal) {
+		   ((NodeBase*)_node)->learn();
 	   } else {
-		   std::cout << "NOT CAPABLE: " << _node->plugin_impl()->uri() << std::endl;
 		   _error = INVALID_NODE_TYPE;
 	   }
 	}
diff --git a/src/gui/NodeMenu.cpp b/src/gui/NodeMenu.cpp
index accf8ef1..e4273330 100644
--- a/src/gui/NodeMenu.cpp
+++ b/src/gui/NodeMenu.cpp
@@ -90,7 +90,8 @@ NodeMenu::init(SharedPtr<NodeModel> node)
 	else
 		_randomize_menuitem->hide();
 
-	if (plugin->uri() == "http://drobilla.net/ns/ingen#control_node")
+	if (plugin->uri() == "http://drobilla.net/ns/ingen#control_node"
+			|| plugin->uri() == "http://drobilla.net/ns/ingen#trigger_node")
 		_learn_menuitem->show();
 	else
 		_learn_menuitem->hide();
-- 
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