From bbbd6a36ec044f06b5fc748b000f23d0418aa91f Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Tue, 6 Oct 2020 21:11:56 +0200
Subject: [PATCH] VST3: set owner (prepare for context-info extensions)

---
 libs/ardour/ardour/vst3_plugin.h |  6 ++++++
 libs/ardour/vst3_plugin.cc       | 14 ++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/libs/ardour/ardour/vst3_plugin.h b/libs/ardour/ardour/vst3_plugin.h
index 53f0ec366c..8215a55ae1 100644
--- a/libs/ardour/ardour/vst3_plugin.h
+++ b/libs/ardour/ardour/vst3_plugin.h
@@ -148,6 +148,8 @@ public:
 
 	Vst::ProcessContext& context () { return _context; }
 
+	void set_owner (ARDOUR::SessionObject* o);
+
 	void enable_io (std::vector<bool> const&, std::vector<bool> const&);
 
 	void process (float** ins, float** outs, uint32_t n_samples);
@@ -233,6 +235,8 @@ private:
 
 	boost::optional<uint32_t> _plugin_latency;
 
+	ARDOUR::SessionObject* _owner;
+
 	int _n_inputs;
 	int _n_outputs;
 	int _n_aux_inputs;
@@ -292,6 +296,8 @@ public:
 
 	int set_block_size (pframes_t);
 
+	void set_owner (ARDOUR::SessionObject* o);
+
 	int connect_and_run (BufferSet&  bufs,
 	                     samplepos_t start, samplepos_t end, double speed,
 	                     ChanMapping const& in, ChanMapping const& out,
diff --git a/libs/ardour/vst3_plugin.cc b/libs/ardour/vst3_plugin.cc
index e480f5804e..d1d5ba8378 100644
--- a/libs/ardour/vst3_plugin.cc
+++ b/libs/ardour/vst3_plugin.cc
@@ -516,6 +516,13 @@ VST3Plugin::set_state (const XMLNode& node, int version)
 
 /* ****************************************************************************/
 
+void
+VST3Plugin::set_owner (ARDOUR::SessionObject* o)
+{
+	Plugin::set_owner (o);
+	_plug->set_owner (o);
+}
+
 int
 VST3Plugin::set_block_size (pframes_t n_samples)
 {
@@ -943,6 +950,7 @@ VST3PI::VST3PI (boost::shared_ptr<ARDOUR::VST3PluginModule> m, std::string uniqu
 	, _is_processing (false)
 	, _block_size (0)
 	, _port_id_bypass (UINT32_MAX)
+	, _owner (0)
 	, _n_factory_presets (0)
 {
 	using namespace std;
@@ -1450,6 +1458,12 @@ VST3PI::plugin_latency ()
 	return _plugin_latency.value ();
 }
 
+void
+VST3PI::set_owner (SessionObject* o)
+{
+	_owner = o;
+}
+
 int32
 VST3PI::count_channels (Vst::MediaType media, Vst::BusDirection dir, Vst::BusType type)
 {