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It's possible to open the Gemwwin on a remote host with the [remotehost( message to [gemwin] (see gemwin-help) | It's possible to open the Gemwwin on a remote host with the [remotehost( message to [gemwin] (see gemwin-help) | ||
However, there is no further explanation of that feature and I haven't seen any discussion on pd-list or here about it. | However, there is no further explanation of that feature and I haven't seen any discussion on pd-list or here about it. | ||
With an [https://f-droid.org/repository/browse/?fdfilter=x%20server&fdid=au.com.darkside.XServer X Server running on the Android]. | |||
I can see the Pd gui on my phone with | |||
$ export PULSE_SERVER=tcp:{local IP}:4712 metacity & puredata | |||
the test audio patch makes noise on the computer. | |||
It (expectedly) doesn't allow me to open a GEM window | |||
error: GEM: X server has no OpenGL GLX extension | |||
error: GEM: Error creating const context | |||
error: GEM: A serious error occured creating const Context | |||
error: GEM: Continue at your own risk! | |||
error: GEM: X server has no OpenGL GLX extension | |||
error: GEM: Unable to create window | |||
error: [gemwin]: no window made | |||
error: GEM: Create window first! | |||
error: JACKerror: SuspendRefNum error | |||
error: JACKerror: JackClient::Execute error name = pure_data_2 | |||
error: JACK: server shut down |
Revision as of 21:37, 4 July 2017
Goal: Stream to Android
Goal: streaming the Gem-window of a Linux Desktop to a VR-headset running on an Android phone.
This page documents different possible approaches and hopefully will show how it's done when successful.
Unsucessful Approaches
Apps
If you are on Windows, you have some choices for apps:
Using x11vnc
Use the command xwininfo to find out the ID of the window to be shared, then use x11vnc -id {id number here} to share only one window to the vnc client.
However cardboard-vnc-free is doing too much. First of all, it controls the moise pointer on the server (as a VNC client should) but I don't need that. There is an option "Viewer" in the connection settings that will diable this and lower the latency from about 3 seconds to 1 second.
cardboard-vnc-free is also adding two viewports to the shared image, to fake a 3D. That's a show stopper, because I want to use the stereo mode in GEM.
udpvideo lite/ffmpeg
Since streaming to a VR-Headset with minimum latency is pretty much what you want with a live drone video this abandoned freeware app is doing exactly that: udpvideo lite
Then run on the desktop: ffmpeg -f x11grab -video_size wxga -r 25 -i :0.0 -f mpjpeg udp://192.168.1.2:5678
Gemwin remote host
It's possible to open the Gemwwin on a remote host with the [remotehost( message to [gemwin] (see gemwin-help) However, there is no further explanation of that feature and I haven't seen any discussion on pd-list or here about it.
With an X Server running on the Android.
I can see the Pd gui on my phone with $ export PULSE_SERVER=tcp:{local IP}:4712 metacity & puredata
the test audio patch makes noise on the computer.
It (expectedly) doesn't allow me to open a GEM window
error: GEM: X server has no OpenGL GLX extension error: GEM: Error creating const context error: GEM: A serious error occured creating const Context error: GEM: Continue at your own risk! error: GEM: X server has no OpenGL GLX extension error: GEM: Unable to create window error: [gemwin]: no window made error: GEM: Create window first! error: JACKerror: SuspendRefNum error error: JACKerror: JackClient::Execute error name = pure_data_2 error: JACK: server shut down