Add test with image file used for RTSP stream

lib/camera.ts

@@ -67,8 +67,15 @@ class Camera {
           process.exit(1);
         }
         if (!fs.existsSync(this.config.CameraDevice)) {
-          // USB cam is not found
-          console.log(`USB Camera is not found at ${this.config.CameraDevice}`);
+          // Filename of image to show in RTSP stream is not found
+          console.log(`Filesrc file is not found at ${this.config.CameraDevice}`);
+          process.exit(1);
+        }
+      }
+      if (this.config.CameraType == 'testsrc') {
+        if (this.config.RTSPServer != 3) {
+          // Only GStreamer RTSP is supported now
+          console.log('Only GStreamer RTSP mode is supported for Test Source video');
           process.exit(1);
         }
       }

rposConfig.sample-testfile.json

@@ -0,0 +1,30 @@
+{
+  "NetworkAdapters" : ["awdl0","eth0", "wlan0", "en0"], 
+  "IpAddress" : "192.168.1.185",
+  "ServicePort" : 8081,
+  "Username" : "admin",
+  "Password" : "admin",
+  "CameraType" : "testsrc",
+  "CameraDevice" : "",
+  "RTSPAddress" : "", "//":"Normally left blank. Used to set RTSP Server Address",
+  "RTSPPort" : 8554,
+  "RTSPName" : "h264",
+  "MulticastEnabled"  : false, "MulticastEnabledComment" : "## Multicast is not supported for USB camera",
+  "RTSPMulticastName" : "h264m",
+  "MulticastAddress"  : "224.0.0.1",
+  "MulticastPort"     : "10001",
+  "RTSPServer" : 3, "RtspServerComment" : "## Select RTSP Server > 1:RPOS RTSP Server 2:V4L2 RTSP Server by mpromonet (auto selected if MulticastEnabled=true) 3:GStreamer",
+  "PTZDriver" : "pelcod", "PTZDriverComment": "## valid values are none,tenx,pelcod,visca and pan-tilt-hat",
+  "PTZOutput" : "none", "PTZOutputComment": "## values are none (eg Tenx), serial and tcp",
+  "PTZSerialPort" : "",
+  "PTZSerialPortSettings" : { "baudRate":2400, "dataBits":8, "parity":"none", "stopBits":1 },
+  "PTZOutputURL": "127.0.0.1:9999",
+  "PTZCameraAddress": 1,
+  "DeviceInformation" : {
+    "Manufacturer" : "RPOS Test Card",
+    "Model" : "Test Card",
+    "HardwareId" : ""
+  },
+  "logLevel" : 3, "logLevelComment": "## LogLevels are > 1:Error 2:Warning 3:Info 4:Debug",
+  "logSoapCalls" : false
+}