[[Category:Ongoing_ProjectsClosed_Projects]]The idea is to up an interface/client for the projector, in order client allows users to share their content without requiring them to connect physically to play & display video/audio over the network remotelyprojector or sound system. This will allow for less shuffling and more compatibility with a wider range facilitates sharing of devicesmedia such as music, for which we may not have all the cables. It also allows for mobile devicesvideos, such and photos; as well as phones sharing your desktop during workshops and tablets, to presentations. The idea is that everyone can easily share media to the projector directlyjust about anything, with ease, from just about any device.
<sub>[https://pad.fixme.ch/p/projector-client Todo list] for improvements and fixes</sub>
__TOC__
== Usage==
* SSH Acces:
ssh -p 47382 pi@projector.fixme.ch
=== Linux ===
{| border="1" cellspacing="0" cellpadding="2" stye="text-align:center;" width="100%"
|-
! width="25%" | Name
! width="8%" | Functionality
! width="67%" | Usage
|-
| '''Reverse VNC'''
Send display to projector
| align="center" style="background:#90EE90;" | Good
| x11vnc -connect projector.fixme.ch:5500 -noxdamage
|-
| '''PulseAudio'''
Send audio to HiFi
| align="center" style="background:#90EE90;" | Good
| Select ''pulse@projector'' from Sound settings
Issues with buffer - sound may be choppy sometimes
|}
=== Mac ===
{| border="1" cellspacing="0" cellpadding="2" stye="text-align:center;" width="100%"
|-
! width="25%" | Name
! width="8%" | Functionality
! width="67%" | Usage
|-
| '''AirPlay Audio'''
Audio streaming from OS X/iOS system sound or iTunes
| align="center" style="background:#90EE90;" | Good
| Select 'Audio' in AirPlay
|-
| '''AirPlay Video/Screen mirroring'''
Video streams and screen mirroring
| align="center" style="background:#FFFFE0;" | Sometimes
| Select 'Video' in AirPlay
Only works when network is uncrowded, does not transmit audio. Development abandoned.
|-
| '''VNC'''
Connect from projector to your mac
| align="center" style="background:#90EE90;" | Good
| vncviewer -FullScreen -ViewOnly ''your IP'' #on pi
Enable Scree Sharing in System Settings > Sharing #on Mac
|}
=== Windows ===
{| border="1" cellspacing="0" cellpadding="2" stye="text-align:center;" width="100%"
|-
! width="25%" | Name
! width="8%" | Functionality
! width="67%" | Usage
|-
| '''VNC'''
Connect from projector to your PC
| align="center" style="background:#90EE90;" | Good
| vncviewer -FullScreen -ViewOnly ''your IP'' #on pi
TightVNC
|}
=== Android ===
{| border="1" cellspacing="0" cellpadding="2" stye="text-align:center;" width="100%"
|-
! width="25%" | Name
! width="8%" | Functionality
! width="67%" | Usage
|-
| '''DLNA/UPnP'''
Send photos/videos/pictures to projector
| align="center" style="background:#90EE90;" | Good
| Select 'Projector' from DLNA/UPnP devices
Works with Samsung Video/Music/Photo default app, [https://play.google.com/store/apps/details?id=com.bubblesoft.android.bubbleupnp Bubble UPnP], [https://play.google.com/store/apps/details?id=com.skifta.android.app Skifta], other DLNA/UPnP compatible apps
|-
| '''Chromecast'''
Send audio to HiFi
| align="center" style="background:#BFBFBF;" | Unsupported
| Select 'Projector' from Chromecast menu
No longer supported by open source software due to Google enforcing strong encryption and verification
|}
Other Apps in testing: [https://shou.tv/ Shou] (root Airplay/DLNA mirroring - works well apart from small lag), BubbleUPNP Audiocast (root xposed sound mirroring over DLNA, 20 minute trial limit), AirAudio (root, airplay/dlna, 5 minute trial limit). All 3 work well, the later two require licences which is annoying. Untested: AllStream, AllCast (untested due to absurd license limits), feel free to suggest others
== Goal ==
=== Data goals ===
*** e.g 1205 for HTTP x264 streams
* Link with trigger interface?
== Obstacles ==
* There aren't any solid similar solutions for remote screen sharing, we have to hack something together
* Will the Raspberry Pi's power be sufficient?
== Component ==
=== Screen sharing Implemented === ===== HTTP x264/h264 ===== VLC screen sharing (screen://) on sender + omxplayer on Pi (for hardware acceleration) (reeealy sketchy atm, can't get to work)
===== VNC =====
xtightvncviewer in reverse VNC listening mode on Pi
DISPLAY=:0 vncviewer -listen 0 -fullscreen -x11cursor #on pi (scripted already)
xtightvncviewer x11vnc or your favourite server on Piyour laptop, Veency on iOS, DroidVNC or others on Android
x11vnc or your favorite server on Works well, however the frame rate is too low for videos, and the resolution can be a bit finicky. If your laptopisn't set to 720x480 or 640x480, the screen will move around with your mouse.
Veency ==== AirPlay & Chromecast ====[http://www.vmlite.com/index.php?option=com_kunena&func=view&catid=23&id=10991 rPlay] is used for AirPlay and Chromecast. Sending music over airplay works fine most of the time, mirroring works intermittently - seems to depend on iOSthe number of devices on the network. Chromecast works sometimes, it seems that Youtube works best right now. Streaming side-loaded google music or any DHCP content does not work.
DroidVNC on Android'''Chromecast using rPlay does not function very well, do not hesitate to suggest alternative servers.'''
* Reverse VNC: http==== DLNA/UPnP ====[https://lifehackergithub.com/198532hzeller/geekgmrender-resurrect Gmrender] is used for DLNA/UPnP. This works excellently, apps on Android phones can stream music without difficulty to-live--tech-support-with-ultravnc-singleclickthe sound system.
=== AirPlay ===perl-net-sdp + shairport on Pi --> http:If you're using apps like BubbleUPNP, make sure you deactivate your personal media server so that others can't see all the music/videos/wwwphotos on your device.raywenderlich.com/44918/raspberry-pi-airplay-tutorial works now
rPlay for AirPlay mirroring (sketchy)=== DLNA/UPnP =PulseAudio ====[http://www.foell.org/justin/raspberry-pulse/ Raspberry Pi pulse audio guide.] This was a pain to set up, however now you can select 'bcm2835 ALSA Analog Stereo on pulse@projector' on your laptop that has pulseaudio. Doesn't work very well over WiFi. There also seem to be issues with discovery, debian doesn't seem to pick it up, but ubuntu does - to be troubleshooted. The buffer also needs to be setup...
==== Last FM Scrobbling ====Scrobbles (aka shares what's currently playing) music from MPD to our Last.fm account. You can have fancy visualisations such as [https://www.last.fm/user/hackerspace/now this], and charts/stats such as [https://www.last.fm/user/hackerspace/charts this]. The scrobbling is done by [https://github.com/hzellerhrkfdn/gmrender-resurrect Thismpdas mpdas]=== MPD ===(thanks dgellow!).
sudo apt=== Not Implemented===* '''HTTP x264/h264 Desktop Mirroring''' allows for less lag/higher framerate compared with VNC, seeing as the RPi has a hardware decoder, and compression helps overcome the RPi's bandwidth limitations (100mbit). [http://www.oblivion-get install mpd basicallysoftware.de/index.php?id=56&type=98 Installing VLC with hardware acceleration on Pi]. [http://www.waitwut.info/blog/2013/06/07/desktop-streaming-with-vlc/ Using VLC for screen sharing]. Status: VLC installed, but was a huge massive pain to set up with proper hardware rendering. Should work, but it's untested and un-configured yet.* [https://github.com/irtimmer/limelight-pi '''Limelight'''] is an open-source Java client which allows you to stream games from your home PC (as long as you have an Nvidia GTX 600 or 700 Series graphics card and enough bandwidth on your home network) to the Raspberry Pi that’s attached to your television. Status: not implemented, may be installed if there is demand in the future.* '''MPD''' is a music player demon that runs on a server, and is controllable from any device connected to the network. [http://www.raspyfi.com/ RaspyFi] is a distro specifically made for this. Status: not implemented, this is currently [https://fixme.ch/wiki/MPD_Daemon handled by foo]. * [https://github.com/lanceseidman/PiCAST '''PiCast'''] opens links and plays streaming videos in fullscreen, Chromecast style. You can open links by sending it via an URL. Status: implemented but removed due to very poor performance and difficulty in setting up correctly. Not very useful either.* '''Synergy''' allows for remote keyboard/mouse control. Status: installed, and then removed. Why? [http://i.imgur.com/WFcCb2K.png Because].* '''MiraCast''' offers native screen sharing for many Android devices. Status: OSS implementation wasn't available when the project started, however there is one now ([https://github.com/codemonkeyricky/piracast Piracast]) which requires a TP-Link dongle and doesn't work with DRMd material. May be implemented in the future.* '''RDP''' is a Windows remote desktop utility, although proprietary, there are open source clients such as [https://github.com/FreeRDP/FreeRDP FreeRDP]. Status: in the future if there is demand. * '''Spotify ''' will play most music you want, and can be used on the Pi using [http://www.woutervanwijk.nl/pimusicbox/ mopidy]. Nevertheless, it requires someone with a premium subscription. Status: if someone has a premium subscription they're willing to share, let us know.
Maybe something like === Control ===Use RPi to turn on/off projector via IR LED, also (maybe) change the input of the stereo system. [http://wwwalexba.raspyfiin/blog/2013/01/06/setting-up-lirc-on-the-raspberrypi/] https://github.com/ afaqurk/linux-dash? Maybe we can build a nice interface too.==utm_source= Chromecast explore-newsletter&utm_medium=email&utm_term=weekly&utm_campaign=explore-email
[https://github.com/lanceseidman/picast PiCast]
== Schedule ==
* 29/11/13 '''December 2013''' - Zephyz bought pi with 10 CHF contributions from gcmalloc, sasha and others after discussionnoskill. The SD Card was provided by fixme/rorist. Raspbian was set up and updated, each contributed 10 CHFssh access was set up, and experimentation began.* 04/12/13 '''January 2014''' - The Raspberry Pi receivedwas mounted in a custom 3D printed holder next to the projector, all the wires were hooked up. PiCast, VNC, Synergy and AirPlay were installed.* 11'''February 2014''' - Proper Airplay (with screen mirroring) and Chromecast were installed. An IR receiver and LED was hooked up in order to be able to control the projector remotely. A splitter was attached to the audio line to allow for playback from both MPD and the projector without switching.* '''March 2014''' - Synergy and Picast removed due to poor performance. A DLNA/12UPnP receiver was set up on the Pi to allow streaming media from devices such as Android phones & tablets. A Pulseaudio sink was also installed. We experimented with an external DSP to amplify sound, however this didn't work. Reverse VNC now runs on startup so there is no need to run script each time.* '''April/13 May 2014''' - Experimenting during evening weekly meetingExtensive attempts to get the IR controller to work, but it doesn't work due to incompatible mosfets (they require minimum 4.5v and Pi has 3.3v output). * '''June 2014''' - Set up Last.fm scrobbler. Reinstalled Shairplay as default client for Airplay seeing as rPlay works very intermittently - there are now two Airplay clients, one for Audio (works well *knock on wood*), one for video. Banging head against wall with pulseaudio buffer.
== Participants ==
* [[User:Sasha|Sasha]] (Leader)
* Zephyz* [[User:GcmallocFrancois|GcmallocFrancois]]
* Other ppl