From 5218c104f9fd5feae59a4952639cc2ead1fa3bd4 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Wed, 5 Aug 2020 20:28:14 +0200
Subject: [PATCH] Fix off by one (Lua arrays are 1-based)

---
 share/scripts/_dsp_plugin_communication.lua | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/share/scripts/_dsp_plugin_communication.lua b/share/scripts/_dsp_plugin_communication.lua
index e422e08cca..1118eeb626 100644
--- a/share/scripts/_dsp_plugin_communication.lua
+++ b/share/scripts/_dsp_plugin_communication.lua
@@ -65,14 +65,14 @@ function dsp_run (ins, outs, n_samples)
 	local a = shmem:to_float (0):array ()
 	if s == 0 then
 		-- the first plugin saves the peak
-		a[0] = peak
+		a[1] = peak
 		ctrl[2] = -1
 	else
 		-- all later plugins display the difference to the first.
-		if (a[0] == 0) then
+		if (a[1] == 0) then
 			ctrl[2] = 1
 		else
-			ctrl[2] = peak / a[0]
+			ctrl[2] = peak / a[1]
 		end
 	end
 end