Building Bridges. Coherence. DLNA/UPnP framework CELF November 7, 2008 Frank Scholz. Coherence/CELF 2008 v /fs

Transcription

1 Building Bridges Coherence DLNA/UPnP framework CELF 2008 November 7, 2008 Frank Scholz

2 Topics why do we need that? what is UPnP and DLNA? what does Coherence?

3 when I was young... no computers no networks no digital media Life was so easy! ;-)

4 in the course of time (1)

5 in the course of time (2)

6 in the course of time (3)

7 Intro (1) piles of digital data distributed on our devices, in our home network or even outside of that

8 Intro (2) computers can be networked easily just create some network shares? BUT...

9 Intro (3) file-system based access is so 80's

10 Intro (4) views like albums, artists, genre, favorites,tags,... are the new black

11 Intro (5) and there are 'things' out there, that just don't know anything about NFS or SMB these 'things' tend to settle in our living rooms

12 now... I work with computers live in a networked home have four kids and a lot of digital media fond of gadgets if only one of these items applies to you, you will end up with UPnP A/V

13 UPnP what is it (1/3) Universal Plug and Play defining ways for devices/applications to find each other on the network and share data and services without user interaction

14 UPnP what is it (2/3) some say it is a developers nightmare a weird mixture of bent specs and protocols SSDP ARP DHCP GENA HTTP HTML XML SOAP HTTPU HTTPMU

15 UPnP what is it (3/3) it is THE standard for CE devices to communicate on a network it is all about interoperability between devices of different vendors!

16 UPnP history created by Microsoft adopted end of the '90s by the BIG players in CE

17 DLNA Digital Living Network Alliance another specification on top of UPnP refines the UPnP ones defines a minimal subset introduces detailed media format description and content transcoding

18 UPnP a quick overview (1/2) composed of six parts Addressing Discovery Description Control Eventing Presentation

19 UPnP a quick overview (2/2) actually a set of specifications Networking Internet Gateway Device WLAN Access Point Audio/Video MediaServer and MediaRenderer ControlPoint Home Automation Printer and Scanner

20 UPnP A/V - devices MediaServer MediaRenderer stores and organizes media does recording displays images plays back audio and video ControlPoint interconnects MediaServer and -Renderer provides information about content controls and provides status

21 UPnP A/V capabilities (1/3) media sharing recording playback and controlling organizing media exchange

22 UPnP A/V capabilities (2/3) stream stream stream

23 UPnP A/V capabilities (3/3) stream stream stream stream store control

24 Bridges isolated, digital islands Coherence acts as a mediator

25 Coherence (1/5) a framework to simplify the interaction with DLNA/UPnP devices with the aim to hide the UPnP complexity written in Python acts as a daemon or can be embedded exposes local and discovered devices/services via D-Bus provides a D-Bus interface to create UPnP devices (still WiP)

26 Coherence (2/5) core is pure Python port by copy Linux, BSD, Solaris, Windows, Nokia Internet Tablet, AVR32, OpenMoko anything that provides a recent Python (>2.4) licenced under MIT

27 Coherence (3/5) UPnP v1 and v2 DLNA 1.5 works with old UPnP devices, with special ones like the X-Box and with DLNA devices, e.g. PS3 transcoding support based on GStreamer (experimental)

28 Coherence (4/5) has its own device backends: filesystem MediaServer db MediaServer GStreamer MediaRenderer...

29 Coherence (5/5) plugins/interfaces for other applications Ampache MediaServer DVB-Daemon MediaServer Flickr MediaServer MetaTracker based MediaServer Nautilus MediaServer (& ControlPoint ) Shoutcast MediaServer Rhythmbox MediaServer, -Renderer and -Player Totem MediaPlayer (, -Renderer soon)...

30 Totem UPnP client little plugin for the sidebar enables Totem to browse MediaServers

31 Rhythmbox (1/2) access other UPnP MediaServers export its media data to other UPnP MediaPlayers/MediaRenderers hand over control to an UPnP ControlPoint

32 Rhythmbox (2/2)

33 DVB-Daemon (1/2) GSoC project by Sebastian Pölsterl setup of DVB devices records TV-shows provides EPG data controllable via a D-Bus interface

34 DVB-Daemon (2/2) act as an MediaServer export recordings (and live-streams) EPG as its corresponding UPnP CDS items via UPnP A/V v2 SchedulingRecording service ControlPoints are able to schedule and manipulate these recording tasks

35 Nautilus (1/2) file-manager of Gnome can be extended with plugins instantly share or receive media

36 Nautilus (2/2) and upload media control a MediaRenderer without any setup

37 What's more? home-automation KNX-UPnP gateway Lights Heating (WiP) ZigBee-UPnP gateway

38 The End Thank YOU! irc://irc.freenode.net/#coherence Questions?