From 3efe7ff05648a55b117ee84820388537f52f28aa Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Thu, 20 Jun 2024 16:32:31 +0200
Subject: [PATCH] Special case DPF VST3 MIDI CC Ports (similar to JUCE)

---
 libs/ardour/vst3_plugin.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libs/ardour/vst3_plugin.cc b/libs/ardour/vst3_plugin.cc
index 8ee813cc9f..9211a8bf43 100644
--- a/libs/ardour/vst3_plugin.cc
+++ b/libs/ardour/vst3_plugin.cc
@@ -16,6 +16,8 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#include <regex>
+
 #include "pbd/gstdio_compat.h"
 #include <glibmm.h>
 
@@ -1452,6 +1454,8 @@ VST3PI::VST3PI (std::shared_ptr<ARDOUR::VST3PluginModule> m, std::string unique_
 	int32 n_params = _controller->getParameterCount ();
 	DEBUG_TRACE (DEBUG::VST3Config, string_compose ("VST3 parameter count: %1\n", n_params));
 
+	std::regex dpf_midi_CC ("MIDI Ch. [0-9]+ CC [0-9]+");
+
 	for (int32 i = 0; i < n_params; ++i) {
 		Vst::ParameterInfo pi;
 		if (_controller->getParameterInfo (i, pi) != kResultTrue) {
@@ -1465,6 +1469,10 @@ VST3PI::VST3PI (std::shared_ptr<ARDOUR::VST3PluginModule> m, std::string unique_
 			/* Some JUCE plugins add 16 * 128 automatable MIDI CC parameters */
 			continue;
 		}
+		if (std::regex_search (tchar_to_utf8 (pi.title), dpf_midi_CC)) {
+			/* DPF plugins also adds automatable MIDI CC parameters "MIDI Ch. %d CC %d" */
+			continue;
+		}
 
 		Param p;
 		p.id          = pi.id;