From 09a4dcee68d3c4b8c0b5f43bcbf8ec2dd6977b41 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Thu, 15 Oct 2020 20:45:26 +0200
Subject: [PATCH] VST3: fix controller state restore

This partially reverts 9e7cfdd8806be9, VST3 host-checker
uses complete state for the controller.
---
 libs/ardour/vst3_plugin.cc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libs/ardour/vst3_plugin.cc b/libs/ardour/vst3_plugin.cc
index e65adf4c38..535b8f68bb 100644
--- a/libs/ardour/vst3_plugin.cc
+++ b/libs/ardour/vst3_plugin.cc
@@ -2235,8 +2235,9 @@ VST3PI::load_state (RAMStream& stream)
 			}
 		}
 		else if (is_equal_ID (i->_id, Vst::getChunkID (Vst::kControllerState))) {
-			ROMStream s (stream, i->_offset, i->_size);
-			tresult res = _controller->setState (&s);
+			assert (FUnknownPtr<Vst::IEditController> (_component) == 0);
+			stream.seek (i->_offset, IBStream::kIBSeekSet, &seek_result);
+			tresult res = _controller->setState (&stream);
 			if (!(res == kResultOk || res == kNotImplemented)) {
 				DEBUG_TRACE (DEBUG::VST3Config, "VST3PI::load_state: failed to restore controller state\n");
 				rv = false;