From bf5f0daca547f33acc228596168bb87ac25639fe Mon Sep 17 00:00:00 2001
From: Douglas Gillespie <50671166+douggillespie@users.noreply.github.com>
Date: Fri, 12 May 2023 10:03:30 +0100
Subject: [PATCH] NI Playback bug

Fix bug in NI playback which threw an exception if no devices were
present and configured in NI-MAX
---
 src/nidaqdev/NIFilePlayback.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/nidaqdev/NIFilePlayback.java b/src/nidaqdev/NIFilePlayback.java
index f87a35ef..3b8b42ed 100644
--- a/src/nidaqdev/NIFilePlayback.java
+++ b/src/nidaqdev/NIFilePlayback.java
@@ -127,7 +127,8 @@ public class NIFilePlayback implements FilePlaybackDevice, PamSettings {
 
 	@Override
 	public boolean preparePlayback(PlaybackParameters playbackParameters) {
-		if (niDeviceLUT == null || niDeviceLUT.length <= playbackParameters.deviceNumber) {
+		if (niDeviceLUT == null || niDeviceLUT.length <= playbackParameters.deviceNumber
+				|| playbackParameters.deviceNumber < 0) {
 			return false;
 		}
 		int bn = niDeviceLUT[playbackParameters.deviceNumber];