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by dividuum
Mon Jul 01, 2019 10:31 am
Forum: OpenGLES
Topic: OpenGL on Buster on both Pi 3 and Pi 4
Replies: 66
Views: 2584

Re: OpenGL on Buster on both Pi 3 and Pi 4

DeluxePixel wrote:
Mon Jul 01, 2019 10:28 am
More to the point, is it possible on the pi4 to use any form of accelerated opengl without using X?

A simple yes or no from someone who knows would be great. :)
Yes. With the mechanism from my previous post. No X required.
by dividuum
Mon Jul 01, 2019 10:12 am
Forum: OpenGLES
Topic: OpenGL on Buster on both Pi 3 and Pi 4
Replies: 66
Views: 2584

Re: OpenGL on Buster on both Pi 3 and Pi 4

Not quite, EGL is still used, its dispmanx that has been replaced by X11 as the lower layer. You need to be able to provide and Xwindow id to eglCreateWindowSurface rather than a EGL_DISPMANX_WINDOW_T Not necessarily: You can also use DRM/GBM(?). See this code (run with ./kmscube -D /dev/dri/card1)...
by dividuum
Mon Jul 01, 2019 10:04 am
Forum: OpenGLES
Topic: OpenGL on Buster on both Pi 3 and Pi 4
Replies: 66
Views: 2584

Re: OpenGL on Buster on both Pi 3 and Pi 4

Is there any good documentation on DRM and all the other APIs that are used now? https://01.org/linuxgraphics/gfx-docs/drm/gpu/index.html seems to document the driver side point of view. Even the man pages link to non-existing documentation pages (for example drmModePageFlip). Only somewhat complete...
by dividuum
Mon Jul 01, 2019 9:33 am
Forum: OpenMAX
Topic: Playing UHD H264
Replies: 3
Views: 148

Re: Playing UHD H264

Edited: The H264 decoder only supports 1920x1080. Oh. Didn't know that. Thanks. So HVEC is required for that? How does one decode that? I naively modified my existing code to send HVEC video frames to the `video_decode` component and never got a OMX_EventPortSettingsChanged event. Is OMX still supp...
by dividuum
Mon Jul 01, 2019 9:00 am
Forum: OpenMAX
Topic: Playing UHD H264
Replies: 3
Views: 148

Playing UHD H264

How exactly does that work? Can we the existing OpenMAX API? I tried omxplayer with jellyfish-120-mbps-4k-uhd-h264.mkv from http://jell.yfish.us/ without success: [email protected]:~# ffprobe jellyfish-120-mbps-4k-uhd-h264.mkv ffprobe version 4.1.3-1+rpt1 Copyright (c) 2007-2019 the FFmpeg developers...
by dividuum
Fri Jun 28, 2019 2:13 pm
Forum: OpenGLES
Topic: Thread from Pi4 discussion
Replies: 80
Views: 4424

Re: Thread from Pi4 discussion

dom wrote:
Fri Jun 28, 2019 1:37 pm
But a simpler source might be kmscube.
Thanks a lot. That was exactly what I was looking for. That should be very helpful in porting my code over to the Pi4.
by dividuum
Fri Jun 28, 2019 9:32 am
Forum: OpenGLES
Topic: Thread from Pi4 discussion
Replies: 80
Views: 4424

Re: Thread from Pi4 discussion

X isn't essential. Kodi for example runs as a fullscreen app. Any hint where to look at? I guess this is the GBM part? Is there any minimal example that shows how to set up a GL surface similar to how it worked with the legacy drivers? When opening a surface like that, I guess that's still on its o...
by dividuum
Thu Apr 18, 2019 11:22 am
Forum: Graphics, sound and multimedia
Topic: could omxplayer display non rectangular area ?
Replies: 2
Views: 222

Re: could omxplayer display non rectangular area ?

info-beamer can do that. It has the option to render videos on OpenGL textures. So you can use all kinds of transformations. The downside is that this is more GPU intensive and FullHD might be problematic. The feature is used for example in this magic video wall package to arbitrarily transform vid...
by dividuum
Wed Apr 10, 2019 9:45 am
Forum: Advanced users
Topic: WiFi Connection manager with fallback web configuration portal
Replies: 7
Views: 505

Re: WiFi Connection manager with fallback web configuration portal

Paul Hutch wrote:
Tue Apr 02, 2019 5:55 pm
From what I've read nobody who has coded this type of system for the Raspberry Pi has released it as free software.
While I'm guilty of that too, the following exists and might be what OP is looking for: https://github.com/balena-io/wifi-connect
by dividuum
Tue Feb 19, 2019 8:02 pm
Forum: Graphics programming
Topic: How synchronize videos on Raspberry CM3 ?
Replies: 2
Views: 958

Re: How synchronize videos on Raspberry CM3 ?

How to sync different videos on differents Raspberry? If you're ok with using a commercial product, our info-beamer hosted product can do that. You can easily build video walls or individual screens that play either the same content or different content of the same duration in sync. info-beamer wor...
by dividuum
Sat Oct 13, 2018 1:12 pm
Forum: Advanced users
Topic: Writing to OTP registers without rebooting
Replies: 2
Views: 448

Re: Writing to OTP registers without rebooting

There's also this readme that describes how to write(?) some OTP values. No idea if that's helpful and I didn't try any of the mentioned commands. Proceed with care.
by dividuum
Sat Aug 04, 2018 8:41 pm
Forum: Graphics, sound and multimedia
Topic: Multiple displays running simultaneously
Replies: 12
Views: 1056

Re: Multiple displays running simultaneously

Info Beamer looks interesting, yes I would really like a turn key solution with start and stop times to control the media players. Unfortunately I think your solution David is rather out of my budget as it has more commercial features than I require as a poor Artist. info-beamer is really on the lo...
by dividuum
Tue Jul 31, 2018 4:42 pm
Forum: Graphics, sound and multimedia
Topic: Multiple displays running simultaneously
Replies: 12
Views: 1056

Re: Multiple displays running simultaneously

Thanks for the suggestions, very helpful, I have looked at the Pi Wall before which is interesting. [...] Mike what is SSH ? I’m not much of a programmer If you're willing to trade money for convenience, you can look at our info-beamer hosted digital signage solution . It can do what you describe e...
by dividuum
Wed Jul 25, 2018 1:31 pm
Forum: Graphics, sound and multimedia
Topic: use omxplayer to streaming youtube
Replies: 7
Views: 2847

Re: use omxplayer to streaming youtube

Thanks for the replay Is same thing it play 2 sec then freeze 1 sec and then stop I trying to stream this video to a Raspberry Pi https://www.youtube.com/watch?v=RtU_mdL2vBM I'm the developer of info-beamer hosted , a digital signage system for the RPi. I've been playing around with live streaming ...
by dividuum
Wed Jul 25, 2018 1:19 pm
Forum: Graphics, sound and multimedia
Topic: Info display screen
Replies: 1
Views: 433

Re: Info display screen

Hi there - I have a wall mounted TV in a corridor I use to display welcome information etc. The TV has no ethernet port, just HDMI in. I used to drive this via a PC the other side of the wall but I now want to use a spare Raspberry Pi I have kicking about. There's an ethernet port on the wall behin...
by dividuum
Wed Jul 25, 2018 1:12 pm
Forum: Graphics, sound and multimedia
Topic: RANDOM VIDEO PLAYER FOR ART INSTALATION
Replies: 8
Views: 1104

Re: RANDOM VIDEO PLAYER FOR ART INSTALATION

True seamless will be hard to do with a rpi just based on the processing power. That's not correct. My info-beamer pi software is capable of that. It works by preloading and pausing the next video before the current video ends. Once it ends, it unpauses the next video. It works pretty well. Here's ...
by dividuum
Mon Apr 09, 2018 5:22 pm
Forum: OpenGLES
Topic: Trouble rendering a simple OpenGL ES 2.0 application
Replies: 1
Views: 5638

Re: Trouble rendering a simple OpenGL ES 2.0 application

I doubt you'll get useful feedback if you don't post at least some of your code.
by dividuum
Thu Mar 08, 2018 12:51 pm
Forum: Graphics programming
Topic: Possible to adjust phase of frame timing on video output?
Replies: 9
Views: 2191

Re: Possible to adjust phase of frame timing on video output?

There is the hdmi_adjust_clock vcgencmd command that can be used to adjust the output HDMI clock frequency. There's a post somewhere in this forum that describes that using a slightly increased or decreased framerate is still within the HDMI spec. I've using this in info-beamer pi to create the "glo...
by dividuum
Wed Feb 21, 2018 3:45 am
Forum: Advanced users
Topic: RPi configred as Access Point to configure Wifi?
Replies: 17
Views: 5267

Re: RPi configred as Access Point to configure Wifi?

Hi, ,this is exactly what I'm looking to do but I need the process embedded into my Raspberry Pi Zero W .. do you offer a non-hosted solution? Sorry, I don't. Also it's tightly integrated into the custom Linux distribution that info-beamer hosted is using, so it wouldn't work in Raspbian without qu...
by dividuum
Sat Feb 10, 2018 6:37 pm
Forum: Advanced users
Topic: RPi configred as Access Point to configure Wifi?
Replies: 17
Views: 5267

Re: RPi configred as Access Point to configure Wifi?

I was thinking of the guy who puts the video projector in the room and starts it. The Pi does his "no net? AP, then" thing, and the screen displays the QR code. So the guy flashes the screen with his phone, that gives him access to that AP and he can configure the network. Except that the step befo...
by dividuum
Sat Feb 10, 2018 11:51 am
Forum: Advanced users
Topic: RPi configred as Access Point to configure Wifi?
Replies: 17
Views: 5267

Re: RPi configred as Access Point to configure Wifi?

If your beamer is a client: WPS is deemed insecure, many APs do not support it and wise admins disable it. If your beamer is the AP: some clients don't support WPS at all, eg iOS. Yeah. That doesn't sound too good. I figured WPS might be used as a signal to trigger starting the configuration access...
by dividuum
Fri Feb 09, 2018 7:48 pm
Forum: Advanced users
Topic: RPi configred as Access Point to configure Wifi?
Replies: 17
Views: 5267

Re: RPi configred as Access Point to configure Wifi?

(Still, I'd prefer a button. Just a matter of taste.) I agree. If the Pi had a hardware button, I'd totally use that. I haven't looked too deeply into WPS, but I feel like there might be neat way to make the configuration interface toggle-able that way. Not sure though. Might be worth looking into.
by dividuum
Fri Feb 09, 2018 4:19 pm
Forum: Advanced users
Topic: RPi configred as Access Point to configure Wifi?
Replies: 17
Views: 5267

Re: RPi configred as Access Point to configure Wifi?

I suspect nobody has done that because there is a lot of "if..." in that last paragraph. Not at all :-) I can confirm that I've actually done exactly what OP outlined for the info-beamer hosted digital signage linux system. I think I also solved a few of the problems you've outlined: - Imagine some...
by dividuum
Thu Jan 11, 2018 11:11 am
Forum: Advanced users
Topic: Scaling digital signage to 500 screens with limited bandwidth
Replies: 16
Views: 3061

Re: Scaling digital signage to 500 screens with limited bandwidth

Just set up a local cache/proxy? Configure one RPi to download new content externally once per day and schedule all the others to download from it, on random or distributed (maybe by IP address) times during the night. Could be very simple with manual configuration pointing to your local cache or v...
by dividuum
Wed Jan 10, 2018 6:23 pm
Forum: Advanced users
Topic: Scaling digital signage to 500 screens with limited bandwidth
Replies: 16
Views: 3061

Re: Scaling digital signage to 500 screens with limited bandwidth

Adding to my previous response: This feature is now publicly available and can be activated (almost) with the click of a button. Learn more here:

https://info-beamer.com/blog/introducin ... stribution

Happy to answer any questions.

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