updated camera state

src/lwir16/lwir16.php

@@ -74,6 +74,7 @@
    define('DAEMON_CTRL',        'daemon');
    define('DAEMON_CTRL_CMDS',   'cmd'); //comma-separated commands to be sent to the daemon
    define('OUTPUT_LOG',         'output_log'); // redirect daemon output
+   define('CAMERA_STATE',       '/var/state/camera');
    
 //   print_r($_GET); // magic
 //   exit(0); // magic
@@ -267,7 +268,7 @@
                exit(0); // no time to close log
            } else if ($cmd == 'state'){
                // TODO: read all subcameras
-               $state = file('/var/state/camera');
+               $state = file(CAMERA_STATE);
                $xml = new SimpleXMLElement("<?xml version='1.0'  standalone='yes'?><lwir16_state/>");
                foreach ($state as $line){
                    $kv = explode('=',$line);
@@ -1087,4 +1088,16 @@ EOT;
         }
     }
     
+    function isCameraBooted(){
+        return (getCameraState(CAMERA_STATE) == 'INITIALIZED');
+    }
+    
+    function getCameraState($camera_state_file){
+        if (!file_exists($camera_state_file)){
+            return NULL;
+        }
+        $camera_state =  parse_ini_file($camera_state_file);
+        return $camera_state['state'];
+    }
+   
 ?>