add audio volume control

Author: josephdadams

companion/HELP.md

@@ -8,12 +8,14 @@ The authorization 'password' sequence generates a random number used a control t
 
 ----------
 
-## **Available commands for PJLink**
+## **Available Commands for PJLink**
 
 - Power On/Off Projector
 - AV Mute Projector
 - Freeze / Unfreeze Input
 - Change Input (Dynamic Input Names from Projector)
+- Speaker Volume Up by 1
+- Speaker Volume Down by 1
 - **Note:**
 <br>Class 2 projectors provide actual input names
 <br>Class 1 Projectors will create generic names based on the input type:
@@ -24,7 +26,7 @@ The authorization 'password' sequence generates a random number used a control t
   - 5: Network (HD-BaseT, NDI)
   - 6: Internal (Flash memory Logo or still)
 
-## **Available variables for PJLink**
+## **Available Variables for PJLink**
 
 - Projector Class
 - Projector Name
@@ -49,7 +51,7 @@ The authorization 'password' sequence generates a random number used a control t
 - Projector Input
 - **Note:** Some variables are only available with Class 2 protocol. These will show as 'N/A' on a Class 1 projector.
 
-## **Available feedback for PJLink**
+## **Available Feedback for PJLink**
 
 - Error Status
 - Freeze Status

pjlink.js

@@ -713,6 +713,13 @@ class PJInstance extends InstanceBase {
 					},
 				],
 			},
+			volumeUp: {
+				name: 'Speaker Volume - Increase by 1',
+			},
+			volumeDown: {
+				name: 'Speaker Volume - Decrease by 1',
+			},
+
 		}
 		for (let cmd in actions) {
 			actions[cmd].callback = async (action, context) => {
@@ -757,6 +764,12 @@ class PJInstance extends InstanceBase {
 			case 'inputToggle':
 				cmd = '%1INPT ' + opt.inputNum
 				break
+			case 'volumeUp':
+				cmd = '%1SVOL 1'
+				break
+			case 'volumeDown':
+				cmd = '%1SVOL 0'
+				break
 		}
 
 		if (cmd !== null) {