Where can I find the full DLNA specifications?
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:
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
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 :)