Where can I find the full DLNA specifications?

Question

I'm looking to create a DLNA media server type of thing in Android. I've found myself a UPnP library for Java called CyberLink, and I'm looking to implement the DLNA interface for a M-DMS, or Mobile Digital Media Server, which has a quick description here:

http://www.dlna.org/dlna-for-industry/digital-living/how-it-works/dlna-device-classes/mobile-digital-media-server

The problem is that I can't find the actual technical specification for such a device. I've put in a lot of effort Googling, so please don't throw a 'JFGI' at me. I ran into a forum post that implied I might have to pay for access to the specification, but it was very vague:

http://www.ps3mediaserver.org/forum/viewtopic.php?f=4&t=3608

The link that was posted as the apparent solution is also broken, and I can't find any similar document on the current UPnP website.

Does anybody know where I can find the DLNA specifications? Or perhaps an alternative solution to implementing it myself? Any help will be much appreciated!

Answer 1

Full DLNA specs are available only to DLNA members and dearly paid for. The guy in referenced forum post is mixing things up. UPnP is not a "dlna doc". DLNA is a refinement of UPnP, a set of rules and restrictions in the name of interoperability. A good half of the DLNA specs is just a verbose listing of allowed media formats, subformats, sampling rates, bitrates etc. Whereas UPnP just specifies the abstract device interfaces. The link is correctly http://upnp.org/resources/upnpresources.zip and standardizeddcps is a subfolder there. DCP stands for Device Control Protocol, aka the abstract interface which the device must implement to participate in UPnP network. You would be interested in arch-DeviceArchitecture document to understand UPnP network in general and then MediaServer* folders, most importantly av-ContentDirectory which is a core service to provide DMS per DLNA specification. And yes, Intel Device Spy is absolutely essential tool. Wireshark will be your friend too. Reverse engineering is a daily bread and DLNA specs won't help you :)