From c07353eeb4fb9d48e8e2868cf2949d11b3ccfcea Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Sun, 28 Sep 2025 12:53:22 +0200
Subject: [PATCH] Add click-free bypass/enable to ACE-Amp

---
 share/scripts/amp5.lua | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/share/scripts/amp5.lua b/share/scripts/amp5.lua
index dfd2061f0e..307d480283 100644
--- a/share/scripts/amp5.lua
+++ b/share/scripts/amp5.lua
@@ -20,6 +20,7 @@ function dsp_params ()
 	return
 	{
 		{ ["type"] = "input", name = "Gain", min = -20, max = 20, default = 0, unit="dB"},
+		{ ["type"] = "input", name = "Enable", min = 0, max = 1, default = 1, bypass = true, toggled = true },
 	}
 end
 
@@ -42,7 +43,13 @@ function dsp_runmap (bufs, in_map, out_map, n_samples, offset)
 	ARDOUR.DSP.process_map (bufs, n_out, in_map, out_map, n_samples, offset)
 
 	local ctrl = CtrlPorts:array() -- get control port array
-	local target_gain  = ARDOUR.DSP.dB_to_coefficient (ctrl[1]) -- 10 ^ (0.05 * ctrl[1])
+	local target_gain;
+	if ctrl[2] <= 0 then -- when disabled
+		target_gain = 1.0
+	else
+		target_gain  = ARDOUR.DSP.dB_to_coefficient (ctrl[1]) -- 10 ^ (0.05 * ctrl[1])
+	end
+
 	local current_gain = cur_gain -- start with the same for all channels
 	cur_gain = target_gain -- use target gain if no channel is mapped.