This introduces a new dialplan function, DEVSTATE, which allows you to do some

pretty cool things.

First, you can get the device state of anything in the dialplan:
  NoOp(SIP/mypeer has state ${DEVSTATE(SIP/mypeer)})
  NoOp(The conference room 1234 has state ${DEVSTATE(MeetMe:1234)})

Most importantly, this allows you to create custom device states so you can
control phone lamps directly from the dialplan.
  Set(DEVSTATE(Custom:mycustomlamp)=BUSY)
  ...
  exten => mycustomlamp,hint,Custom:mycustomlamp


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@54261 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_meetme.c

@@ -2867,7 +2867,7 @@ static void *recordthread(void *args)
 }
 
 /*! \brief Callback for devicestate providers */
-static int meetmestate(const char *data)
+static enum ast_device_state meetmestate(const char *data)
 {
 	struct ast_conference *conf;
 
@@ -3540,12 +3540,12 @@ static int slatrunk_exec(struct ast_channel *chan, void *data)
 	return 0;
 }
 
-static int sla_state(const char *data)
+static enum ast_device_state sla_state(const char *data)
 {
 	char *buf, *station_name, *trunk_name;
 	struct sla_station *station;
 	struct sla_trunk_ref *trunk_ref;
-	int res = AST_DEVICE_INVALID;
+	enum ast_device_state res = AST_DEVICE_INVALID;
 
 	trunk_name = buf = ast_strdupa(data);
 	station_name = strsep(&trunk_name, "_");

apps/app_queue.c

@@ -612,7 +612,7 @@ static void *changethread(void *data)
 	return NULL;
 }
 
-static int statechange_queue(const char *dev, int state, void *ign)
+static int statechange_queue(const char *dev, enum ast_device_state state, void *ign)
 {
 	/* Avoid potential for deadlocks by spawning a new thread to handle
 	   the event */