ONVIF is an open industry forum that provides and promotes standardized interfaces for effective interoperability of IP-based physical security products. ONVIF was created to make a standard way of how IP products within CCTV and other security areas can communicate with each other.
The OnvifDiscovery class uses the Web Services Dynamic Discovery (WS-Discovery). This is a technical specification that defines a multicast discovery protocol to locate services on a local network. It operates over TCP and UDP port 3702 and uses IP multicast address 239.255.255.250. As the name suggests, the actual communication between nodes is done using web services standards, notably SOAP-over-UDP.
With WS-Discovery, the discovery tool puts SSDP queries on the network from its unicast address to 239.255.255.250 multicast address, sending them to the well-known UDP port 3702. The device receives the query, and answers to the discovery tool's unicast IP address from its unicast IP address. The reply contains information about the Web Services (WS) available on the device.
UPnP works in a very similar way, but on a different UDP port (1900).
Compared to the WS-Discovery, the UPnP is intended for a general use (data sharing, communication, entertainment).
DiscoveryManager manager = new DiscoveryManager();
manager.setDiscoveryTimeout(10000);
manager.discover(new DiscoveryListener() {
@Override
public void onDiscoveryStarted() {
System.out.println("Discovery started");
}
@Override
public void onDevicesFound(List<Device> devices) {
for (Device device : devices)
System.out.println("Devices found: " + device.getHostName());
}
});With the OnvifManager class it is possible to send requests to an ONVIF-supported device. All requests are sent asynchronously and you can use the OnvifResponseListener for errors and custom response handling. It is possible to create your own OnvifDevice or retrieve a list from the discover method in the DiscoveryManager
onvifManager = new OnvifManager();
onvifManager.setOnvifResponseListener(this);
OnvifDevice device = new OnvifDevice("192.168.0.131", "username", "password");Returns information about services on the device.
onvifManager.getServices(device, new OnvifServicesListener() {
@Override
public void onServicesReceived(@Nonnull OnvifDevice onvifDevice, OnvifServices services) {
}
});Returns basic device information from the device. This includes the manufacturer, serial number, hardwareId, ...
onvifManager.getDeviceInformation(device, new OnvifDeviceInformationListener() {
@Override
public void onDeviceInformationReceived(@Nonnull OnvifDevice device,
@Nonnull OnvifDeviceInformation deviceInformation) {
}
});Returns pre-configured or dynamically configured profiles. This command lists all configured profiles in a device. The client does not need to know the media profile in order to use the command.
onvifManager.getMediaProfiles(device, new OnvifMediaProfilesListener() {
@Override
public void onMediaProfilesReceived(@Nonnull OnvifDevice device,
@Nonnull List<OnvifMediaProfile> mediaProfiles) {
}
});Returns a raw media stream URI that remains valid indefinitely even if the profile is changed.
onvifManager.getMediaStreamURI(device, mediaProfiles.get(0), new OnvifMediaStreamURIListener() {
@Override
public void onMediaStreamURIReceived(@Nonnull OnvifDevice device,
@Nonnull OnvifMediaProfile profile, @Nonnull String uri) {
}
});With the UPnPManager it is possible to retrieve device information from a locally connected UPnP device. A UPnPDevice can be created manually or discovered from the DiscoveryManager using discovery.discover(DiscoveryMode.UPNP)
UPnPDevice device = new UPnPDevice("192.168.0.160");
device.setLocation("http://192.168.0.160:49152/rootdesc1.xml");
UPnPManager uPnPManager = new UPnPManager();
uPnPManager.getDeviceInformation(device, new UPnPDeviceInformationListener() {
@Override
public void onDeviceInformationReceived(@Nonnull UPnPDevice device,
@Nonnull UPnPDeviceInformation information) {
Log.i(TAG, device.getHostName() + ": " + information.getFriendlyName());
}
@Override
public void onError(@Nonnull UPnPDevice onvifDevice, int errorCode, String errorMessage) {
Log.e(TAG, "Error: " + errorMessage);
}
});It is possible to implement your custom ONVIF request by creating a new class and implementing the OnvifRequest interface and overriding the getXml() and getType() methods.
public class PTZRequest implements OnvifRequest {
@Override
public String getXml() {
return "<GetServices xmlns=\"http://www.onvif.org/ver10/device/wsdl\">" +
"<IncludeCapability>false</IncludeCapability>" +
"</GetServices>";
}
@Override
public OnvifType getType() {
return OnvifType.CUSTOM;
}
}and send it to the appropriate OnvifDevice:
onvifManager.sendOnvifRequest(device, new PTZRequest());Use the OnvifResponseListener to receive responses from your custom requests.
In order to receive multicasts packets on your Android device, you'll have to acquire a lock on your WifiManager before making a discovery. Make sure to release the lock once the discovery is completed. More information can be found here: https://developer.android.com/reference/android/net/wifi/WifiManager.MulticastLock
private void lockMulticast() {
WifiManager wifi = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
if (wifi == null)
return;
WifiManager.MulticastLock lock = wifi.createMulticastLock("ONVIF");
lock.acquire();
}Download the latest JAR or grab via Maven:
<dependency>
<groupId>be.teletask.onvif</groupId>
<artifactId>onvif</artifactId>
<version>1.0.0</version>
</dependency>or Gradle:
compile 'be.teletask.onvif:onvif:1.0.0'Feel free to send pull requests.
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