From 7ca44cb8800a2800e58fadd0267416224650e08d Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Wed, 23 May 2012 00:57:57 +0000
Subject: Fix crash when loading polyphonic patches.

git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@4442 a436a847-0d15-0410-975c-d299462d15a1
---
 src/gui/PatchView.cpp             | 13 +++++++++----
 src/server/PatchImpl.cpp          | 10 +++++-----
 src/server/PatchImpl.hpp          |  6 ++++--
 src/server/events/SetMetadata.cpp |  9 +++++----
 4 files changed, 23 insertions(+), 15 deletions(-)

diff --git a/src/gui/PatchView.cpp b/src/gui/PatchView.cpp
index d8e00ac2..b3b79ddf 100644
--- a/src/gui/PatchView.cpp
+++ b/src/gui/PatchView.cpp
@@ -171,10 +171,15 @@ PatchView::process_toggled()
 void
 PatchView::poly_changed()
 {
-	_app->interface()->set_property(
-		_patch->path(),
-		_app->uris().ingen_polyphony,
-		_app->forge().make(_poly_spin->get_value_as_int()));
+	const int poly = _poly_spin->get_value_as_int();
+	if (_enable_signal && poly != (int)_patch->internal_poly()) {
+		std::cerr << "POLY SPIN CHANGE " << _patch->internal_poly()
+		          << " => " << poly << std::endl;
+		_app->interface()->set_property(
+			_patch->path(),
+			_app->uris().ingen_polyphony,
+			_app->forge().make(poly));
+	}
 }
 
 void
diff --git a/src/server/PatchImpl.cpp b/src/server/PatchImpl.cpp
index 43a8ea01..bd12f78a 100644
--- a/src/server/PatchImpl.cpp
+++ b/src/server/PatchImpl.cpp
@@ -49,7 +49,8 @@ PatchImpl::PatchImpl(Engine&             engine,
 	                           "patch", "Ingen Patch"),
 	           symbol, poly, parent, srate)
 	, _engine(engine)
-	, _internal_poly(internal_poly)
+	, _poly_pre(internal_poly)
+	, _poly_process(internal_poly)
 	, _compiled_patch(NULL)
 	, _process(false)
 {
@@ -109,6 +110,7 @@ PatchImpl::prepare_internal_poly(BufferFactory& bufs, uint32_t poly)
 	for (Nodes::iterator i = _nodes.begin(); i != _nodes.end(); ++i)
 		(*i)->prepare_poly(bufs, poly);
 
+	_poly_pre = poly;
 	return true;
 }
 
@@ -132,12 +134,11 @@ PatchImpl::apply_internal_poly(ProcessContext& context,
 		}
 	}
 
-	const bool polyphonic = parent_patch() && (poly == parent_patch()->internal_poly());
+	const bool polyphonic = parent_patch() && (poly == parent_patch()->internal_poly_process());
 	for (Ports::iterator i = _outputs.begin(); i != _outputs.end(); ++i)
 		(*i)->setup_buffers(context, bufs, polyphonic ? poly : 1);
 
-	_internal_poly = poly;
-
+	_poly_process = poly;
 	return true;
 }
 
@@ -267,7 +268,6 @@ PatchImpl::add_node(Nodes::Node* ln)
 	assert(ln != NULL);
 	assert(ln->elem() != NULL);
 	assert(ln->elem()->parent_patch() == this);
-	//assert(ln->elem()->polyphony() == _internal_poly);
 
 	_nodes.push_back(ln);
 }
diff --git a/src/server/PatchImpl.hpp b/src/server/PatchImpl.hpp
index 557f0343..d1b11187 100644
--- a/src/server/PatchImpl.hpp
+++ b/src/server/PatchImpl.hpp
@@ -152,7 +152,8 @@ public:
 	void enable() { _process = true; }
 	void disable(ProcessContext& context);
 
-	uint32_t internal_poly() const { return _internal_poly; }
+	uint32_t internal_poly()         const { return _poly_pre; }
+	uint32_t internal_poly_process() const { return _poly_process; }
 
 private:
 	inline void compile_recursive(NodeImpl* n, CompiledPatch* output) const;
@@ -160,7 +161,8 @@ private:
 	void process_single(ProcessContext& context);
 
 	Engine&        _engine;
-	uint32_t       _internal_poly;
+	uint32_t       _poly_pre;        ///< Pre-process thread only
+	uint32_t       _poly_process;    ///< Process thread only
 	CompiledPatch* _compiled_patch;  ///< Process thread only
 	Edges          _edges;           ///< Pre-process thread only
 	Ports          _inputs;          ///< Pre-process thread only
diff --git a/src/server/events/SetMetadata.cpp b/src/server/events/SetMetadata.cpp
index e8cce384..cc2ae563 100644
--- a/src/server/events/SetMetadata.cpp
+++ b/src/server/events/SetMetadata.cpp
@@ -303,16 +303,17 @@ SetMetadata::execute(ProcessContext& context)
 		case POLYPHONIC: {
 			PatchImpl* parent = reinterpret_cast<PatchImpl*>(object->parent());
 			if (value.get_bool()) {
-				object->apply_poly(context, *_engine.maid(), parent->internal_poly());
+				object->apply_poly(
+					context, *_engine.maid(), parent->internal_poly_process());
 			} else {
 				object->apply_poly(context, *_engine.maid(), 1);
 			}
 		} break;
 		case POLYPHONY:
-			if (_patch->internal_poly() != static_cast<uint32_t>(value.get_int32()) &&
-			    !_patch->apply_internal_poly(context,
+			if (!_patch->apply_internal_poly(context,
 			                                 *_engine.buffer_factory(),
-			                                 *_engine.maid(), value.get_int32())) {
+			                                 *_engine.maid(),
+			                                 value.get_int32())) {
 				_status = INTERNAL_ERROR;
 			}
 			break;
-- 
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