Fix decklink element name and add connection property

Author: hmelder

Daemons/vmpserverd/config.plist.in

@@ -171,6 +171,7 @@
         - The type specifies the type of the channel.
         - The properties are specific to the channel type:
             - "v4l2": device (required)
+            - "decklink": deviceNumber (required), connection (required)
             - "pulse": device (required)
             - "videoTest": width (required), height (required)
             - "audioTest": channels (required)

Daemons/vmpserverd/profiles/com.hugomelder.software.plist

@@ -66,7 +66,7 @@
             <key>v4l2</key>
             <string>v4l2src device={V4L2DEV} ! videoconvertscale add-borders=1 ! video/x-raw, width=1920, height=1080 ! queue ! intervideosink channel={VIDEOCHANNEL.0}</string>
             <key>decklink</key>
-            <string>decklinksrc device-number={DEV} ! videoconvert ! videoscale ! videorate ! video/x-raw, width=1920, height=1080 ! intervideosink channel={VIDEOCHANNEL.0}</string>
+            <string>decklinkvideosrc device-number={DEV} connection={CON} ! videoconvert ! videoscale ! videorate ! video/x-raw, width=1920, height=1080 ! intervideosink channel={VIDEOCHANNEL.0}</string>
             <key>videoTest</key>
             <string>videotestsrc is-live=1 ! video/x-raw,width={WIDTH},height={HEIGHT},format=NV12 !
  intervideosink channel={VIDEOCHANNEL.0}</string>

Daemons/vmpserverd/profiles/com.hugomelder.vaapi.plist

@@ -98,7 +98,7 @@
             -->
             <string>v4l2src device={V4L2DEV} ! videoconvertscale add-borders=1 ! video/x-raw, width=1920, height=1080 ! intervideosink channel={VIDEOCHANNEL.0}</string>
             <key>decklink</key>
-            <string>decklinksrc device-number={DEV} ! videoconvert ! videoscale ! videorate ! video/x-raw, width=1920, height=1080 ! intervideosink channel={VIDEOCHANNEL.0}</string>
+            <string>decklinkvideosrc device-number={DEV} connection={CON} ! videoconvert ! videoscale ! videorate ! video/x-raw, width=1920, height=1080 ! intervideosink channel={VIDEOCHANNEL.0}</string>
             <key>videoTest</key>
             <string>videotestsrc is-live=1 ! video/x-raw,width={WIDTH},height={HEIGHT},format=NV12 ! intervideosink channel={VIDEOCHANNEL.0}</string>
         </dict>

Daemons/vmpserverd/src/VMPRTSPServer.m

@@ -367,12 +367,14 @@ - (BOOL)_startChannelPipelinesWithError:(NSError **)error {
 				CONFIG_ERROR(error, @"decklink channel is missing 'deviceNumber' property")
 				return NO;
 			}
+			NSString *connection = properties[@"connection"];
+			if (!connection) {
+				CONFIG_ERROR(error, @"decklink channel is missing 'connection' property");
+				return NO;
+			}
 
 			// Substitution dictionary for pipeline template
-			vars = @{
-				@"VIDEOCHANNEL.0" : name,
-				@"DEV" : [device stringValue],
-			};
+			vars = @{@"VIDEOCHANNEL.0" : name, @"DEV" : [device stringValue], @"CON" : connection};
 		}
 
 		// Skip pipeline creation if type is unknown