Android/Lineage OS and Screen mirroring ("Cast")
Android has native screen mirroring capabilities (when pulling down the status bar, there is a "cast" icon).
It uses for two technologies:
- Miracast (WiFi Display)
- Google Cast (Chromecast protocols CASTv1 and CASTv2)
Miracast is an open standard, Google Cast is proprietary.
Google Cast requires "gapps" on LineageOS. (proprietary google library)
Miracast
- Android 4.4 (2013) introduced support for Miracast
- Android 6 (2015) already removed support for Miracast on some Nexus devices
- Android 9 (2018) (Android Pie) has no more source code for Miracast since Google removed support for it
- https://www.reddit.com/r/LineageOS/comments/bqh9na/opo_on_pie_casten_does_not_work_anymore/eo4oyhd/
- https://www.reddit.com/r/LineageOS/comments/dkswr3/cast_not_working_anymore_with_windows_10_connect/f4jkxym/
- https://www.reddit.com/r/LineageOS/comments/bdcl2v/unbale_to_cast_screen_to_tv_in_lineage_os_16_bacon/
Linux implementations
- 2014: https://github.com/albfan/miraclecast
- 2019-12: https://blogs.gnome.org/benzea/2019/01/30/gnome-screencast/
List of applications: https://wiki.thingsandstuff.org/Networked_media#Miracast
Google Cast
- Disable Google Cast Receiver Signature Verification in Google Play Services with an XPosed module: https://cryptographybuzz.com/reverse-engineering-google-cast/
Protocol v1
Uses DIAL (http://www.dial-multiscreen.org, https://en.wikipedia.org/wiki/Discovery_and_Launch)
- How Chromecast Works, Chromecast Protocol Explained (2013) http://geeknizer.com/how-chromecast-works-chromecast-protocol-explained/
- Chromecast Implementation Documentation WIP https://github.com/jloutsenhizer/CR-Cast/wiki/Chromecast-Implementation-Documentation-WIP
- RAMP https://github.com/entertailion/Fling
CASTv1 receiver implementations
- leapcast: https://github.com/dz0ny/leapcast
- cheapcast: https://github.com/mauimauer/cheapcast
- plaincast: audio-only receiver, https://github.com/aykevl/plaincast
- plaincast for Dreambox satellite receiver: https://dreambox.de/board/index.php?thread/22590-youtube-videos-auf-die-dreambox-casten-plaincast/&postID=175993
Senders:
- aircast (simulates airplay server, sends to chromecast)
- RemoteCast: control chromecast (audio volume, play/pause) (unavailable since 2015)
- pulseaudio-dlna: Send Linux sound to Chromecast (sink). Unclear if v1 or v2
Howto
Control it with curl:
- https://fiquett.com/2013/07/chromecast-traffic-sniffing/
- https://coderwall.com/p/jvuzdg/play-youtube-video-from-terminal-to-chromecast
Find receivers:
$ gssdp-discover --timeout=3 -t urn:dial-multiscreen-org:device:dialreceiver:1
Run a youtube video:
$ curl -X POST -d "v=zjR_AhxPnVM" http://dreambox:8008/apps/YouTube
Protocol analysis for v2
Custom protocol
- Google Cast Protocol: Overview https://blog.oakbits.com/google-cast-protocol-overview.html
- Google Cast Protocol: Discovery And Connection https://blog.oakbits.com/google-cast-protocol-discovery-and-connection.html
- Google Cast Protocol: Receiver Authentication https://blog.oakbits.com/google-cast-protocol-receiver-authentication.html
- Chromecast Wireless Protocols Part-I: Setup http://jhshi.me/2016/10/24/chromecast-wireless-protocols-part-i-setup/index.html
- Chromecast Wireless Protocols Part-II: Cast http://jhshi.me/2016/10/24/chromecast-wireless-protocols-part-ii-cast/index.html
CASTv2 Receiver implementations
- javascript: https://github.com/thibauts/node-castv2
- java: https://github.com/vitalidze/chromecast-java-api-v2
- python: https://github.com/huaiyuangu/chromecast-receiver-emulator
CAST v2 senders
- php: https://github.com/ChrisRidings/CastV2inPHP
- fx_cast: Firefox Extension to cast videos on websites to Chromecast https://github.com/hensm/fx_cast
List of applications: https://wiki.thingsandstuff.org/Networked_media#Google_Cast_.2F_Chromecast
Open Screen Protocol
UPnP Multiscreen
