Miracast playback support - proposal for a source element

[Alexander Kanavin]

Hello,

we (Intel's Open Source Technology Center, http://01.org ) are working 
on an open source implementation of Miracast technology (which basically 
replaces an HDMI cable with a wireless peer-to-peer link). Miracast is 
supported by Android and Windows, and other display devices, but there 
is no Linux stack yet.

Here's the code, it's work in progress, but we have a working demo for 
both sides, and we're now doing interoperability testing with other 
Miracast stacks:
https://github.com/01org/wysiwidi

As part of the project, we would like to implement a gstreamer source 
element that will allow easy playback of miracast streams on the display 
side:

gst-launch-1.0 playbin uri=miracast://source_ip:port

Establishing a media stream using Miracast consists of the following steps:

1) Scanning for available devices and establishing a peer-to-peer link 
using Wi-Fi P2P mechanisms (there is no 'access point' involved; devices 
discover and connect to each other directly). The element will not 
handle this part; it's assumed that the application will do it using 
available network management facilities on the system (such as connman, 
wpa_supplicant, etc.). Connman already has support for this.

2) Negotiating the streaming parameters using RTSP with 
miracast-specific extensions. The element will do this.

3) Accepting incoming stream using MPEGTS over RTP over UDP. The element 
will do this too.


Is this ok? Would you be interested in carrying this element upstream in 
gstreamer plugins?


Regards,
Alexander