Add ONVIF support

[curtishall]

ONVIF is a standard that allows cameras to be detected and configured in a universal way. Links are below:

http://www.onvif.org/
http://www.openipcam.com/forum/index.php/topic,155.0.html
http://en.wikipedia.org/wiki/Open_Network_Video_Interface_Forum

[curtishall]

Rumin already added most of this, which can be found in this branch:

https://github.com/bluecherrydvr/bluecherry-apps/tree/onvif

[ghost]

The most important question: how is it supposed to work? Interoperation with which software/hardware/etc must work and be supported? Sorry if the question is dumb, i'm not an expert on the subject.

[ghost]

In the Rumin's commit, OpenSSL header files are incorporated into sources tree two times, and gSOAP lib sources are incorporated three times, which is obviously way wrong. I will work on redoing that the right way after i figure out how ONVIF finctionality is supposed to work and check how it is actually implemented.

[ghost]

Just reserving this info here:
Alex has said that most needed ONVIF-related features for bc-server are:

• camera device discovery
• on-camera motion detection (using a sort of notifications/events i guess)
• camera configuration by API

[ghost]

@abelykh Alex i would like to hear from you what kind of interface(s) for device discovery would you like to have for usage in our server web scripts?

[abelykh]

@krieger-od AFAIK this should be implemented in one of the pull requests by ruminsam -- it was supposed to be a script that would be called from the web (possibly through CGI) and would return XML with the list of the devices and their respective information. Some devices will provide details only after they are authenticated with, and will only provide make/model/name before authentication.

[abelykh]

@krieger-od see 0d6ec50

[ghost]

Update: for ONVIF functionality, PONVIF library is going to be included as a git submodule.

[ghost]

Just for note.

• ONVIF notification mechanism for motion detection and other events is described in ONVIF Core Spec in chapter 9.
• Communication trace for one of subscription scenarios is given in ONVIF App Programmer Guide, chapter B.6.3.
• One more trace, taken from an app, "ONVIF Device Monitor", is here: http://sourceforge.net/p/onvifdm/discussion/1246119/thread/6424cf7e/
• Example of manually crafted subscription request, and receival of events, is exposed here: Zoneminder, Onvif CPU and RTSP capture ZoneMinder/zoneminder#431

[ghost]

PONVIF and ponvif_ext tools from ltoscano are now included to bluecherry-apps as submodules and are installed to /usr/share/bluecherry by package (only in master branch and unstable 2.3.x packages).

[ghost]

Backend part is completed by Lorenzo, now web UI work is pending. So dropping assignment on me.