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by tvjon
Sun Apr 14, 2019 9:19 am
Forum: Beginners
Topic: How to connect a old keyboard to a PI?
Replies: 13
Views: 280

Re: How to connect a old keyboard to a PI?

"A couple of hours later I found it. "

Sounds like the same loft-organisation we have :)

@B.Goode - Likewise!

Actually I think many places call them keyboards.


Can you post a photo of all its sockets & if possible the make & model?
by tvjon
Sat Apr 06, 2019 4:29 pm
Forum: Other projects
Topic: Raspberry Pi into iMacG4
Replies: 2
Views: 169

Re: Raspberry Pi into iMacG4

I have just the big Mac G4 with the curvy handles top & bottom.

HDMI to DVI is perhaps the easiest.

Look at:

https://www.tonymacx86.com/threads/erst ... g4.102250/

for some ideas.
by tvjon
Wed Apr 03, 2019 3:33 pm
Forum: Camera board
Topic: Funny colors while using mplayer
Replies: 9
Views: 300

Re: Funny colors while using mplayer

..., but colors are quite bizzare ... similar to infrared camera image, although my camera is normal: HD Webcam C525 (Logitech). Any ideas ? Thanks $ sudo apt install qv4l2 will get you a good test app', accessible as in the attached pic', allowing you to set up your camera properly. $ xvinfo X-Vid...
by tvjon
Fri Mar 29, 2019 8:09 pm
Forum: Advanced users
Topic: RPi3 TV HAT no service
Replies: 15
Views: 460

Re: RPi3 TV HAT no service

... I also tried with last raspbian but with the same result My wife's brother lives in the Toulouse area, & he has a RPi so I'll try to find out if he has a tuner. In the meantime, you could try this approach to tuning in your card: https://www.raspberrypi.org/forums/viewtopic.php?f=35&t=218062 I'...
by tvjon
Wed Mar 27, 2019 11:09 am
Forum: Graphics, sound and multimedia
Topic: HDMI to CSI-2 via TC358743 on kernel 4.1
Replies: 539
Views: 161050

Re: HDMI to CSI-2 via TC358743 on kernel 4.1

"one of the main reasons not to blindly follow scripts." Indeed. https://gist.githubusercontent.com/sphaero/02717b0b35501ad94863/raw/4b3e2c626bd4896527556705835f7396a3d94555/gstreamer-build.sh I didn't think there's a working firewire interface on RPi... The directory size after that lot is download...
by tvjon
Tue Mar 19, 2019 12:25 pm
Forum: Beginners
Topic: How to Configure LXPanel for terminal emulator?
Replies: 2
Views: 93

Re: How to Configure LXPanel for terminal emulator?

$ uname -a Linux sa1 4.19.20-v7+ #1201 SMP Tue Feb 12 22:10:44 GMT 2019 armv7l GNU/Linux works as expected. Originally the forum had a 64k limit on attached pic' sizes, which has now increased, but I wasted a lot of time about a year ago before realising a single attachment only had been enforced, s...
by tvjon
Mon Mar 18, 2019 8:56 am
Forum: Graphics, sound and multimedia
Topic: Pi as sound effect processor
Replies: 3
Views: 186

Re: Pi as sound effect emulator

... How possible is this? I want to emphasise that I am open to chance behaviours and software delays. This is a very experimental work. thanks Certainly possible, with some effort of course. As fruitoftheloom points out, an audio input device is required, so for example USB, SPI, or, as you mentio...
by tvjon
Thu Mar 14, 2019 10:14 am
Forum: Off topic discussion
Topic: One doesn't always want Raspberry Pi.
Replies: 30
Views: 1291

Re: One doesn't always want Raspberry Pi.

...Buy cheapest products that don't give you headaches . ... Maybe doing your research gave you the headaches? Raspberry Pi's raison d'être is education, & I've found working with them to fulfil that role admirably. I've never found them to give me headaches, but certainly challenges. However throu...
by tvjon
Thu Mar 14, 2019 9:54 am
Forum: Other projects
Topic: Automating setup of midi piano
Replies: 6
Views: 296

Re: Automating setup of midi piano

This is my first project with my Pi 3 B+. ... To do this I have added script to the global autostart file. ... I know that fluidsynth is loading as the client appears when I run aconnect -o Thak you I imagine they'll be really pleased with your project. What name shows up for your usb midi keyboard...
by tvjon
Thu Mar 14, 2019 9:48 am
Forum: Other projects
Topic: Automating setup of midi piano
Replies: 6
Views: 296

Re: Automating setup of midi piano

This is my first project with my Pi 3 B+. ... To do this I have added script to the global autostart file. ... I know that fluidsynth is loading as the client appears when I run aconnect -o Thak you I imagine they'll be really pleased with your project. What name shows up for your usb midi keyboard...
by tvjon
Mon Mar 04, 2019 1:19 pm
Forum: Graphics, sound and multimedia
Topic: Mplayer BGR to RGB
Replies: 19
Views: 892

Re: Mplayer BGR to RGB

Ah yes.

I thought he'd moved on from that to a generic mplayer question,

"How to ask mplayer to use v4l2 settings?".


BTW, I posted the 2 makefiles for mmplay & mmalcam to Github per your request a week ago, but unsure if it all worked. Was it ok?
by tvjon
Mon Mar 04, 2019 12:36 pm
Forum: Graphics, sound and multimedia
Topic: Mplayer BGR to RGB
Replies: 19
Views: 892

Re: Mplayer BGR to RGB

... How to ask mplayer to use v4l2 settings? Thanks. It just works. 2% cpu usaqge. $ mplayer tv:// MPlayer 1.3.0 (Debian), built with gcc-6.2.1 (C) 2000-2016 MPlayer Team do_connect: could not connect to socket connect: No such file or directory Failed to open LIRC support. You will not be able to ...
by tvjon
Tue Feb 26, 2019 12:19 pm
Forum: Graphics programming
Topic: Getting direct access to a dispmanx resource
Replies: 25
Views: 1620

Re: Getting direct access to a dispmanx resource

"There's mmalcam as well which probably uses an almost identical makefile." Yes, it also works fine, & apart from file names, yes, same makefile. "It's probably part of the reason that Broadcom wrote their own containers parsers." I think that was a smart decision really. It's very handy that mmalpl...
by tvjon
Mon Feb 25, 2019 6:12 pm
Forum: Graphics programming
Topic: Getting direct access to a dispmanx resource
Replies: 25
Views: 1620

Re: Getting direct access to a dispmanx resource

"There's no default component listed, but I would have expected "vc.ril.audio_decode" to work. I thought OMXPlayer used it, but on closer look I think it uses ffmpeg." Along with demux etc.. "Again there's some history behind it. Audio is significantly lighter weight than video, so on almost all sys...
by tvjon
Mon Feb 25, 2019 5:05 pm
Forum: Graphics programming
Topic: Getting direct access to a dispmanx resource
Replies: 25
Views: 1620

Re: Getting direct access to a dispmanx resource

Just seen your replies *after* I'd edited out the lines in vc_image_structs.h I don't normally like to do that because then I end up with diiferent versions of official headers. There are a few oddities in some of the includes, yes. Over the weekend I was looking for a MMAL audio decoder but in fact...
by tvjon
Mon Feb 25, 2019 3:36 pm
Forum: Graphics programming
Topic: Getting direct access to a dispmanx resource
Replies: 25
Views: 1620

Re: Getting direct access to a dispmanx resource

6by9 wrote:
Mon Feb 25, 2019 2:02 pm
...
I'm not pushing that back to github as others may then take that as a good example, and it really isn't.
Can you provide a link to

helpers/debug_utils/

please, as I can't find such in any of the userlands or /opt/vc ?
by tvjon
Thu Feb 21, 2019 11:56 am
Forum: Raspbian
Topic: invert screen colors?
Replies: 9
Views: 1740

Re: invert screen colors?

I've added an extra argument now for the display number, & even more usefully, it works fine on the Foundation TFT display, & anything connected via the DPI interface as well as HDMI/composite. I don't own a Foundation display any longer, but usefully a friend lent me his display recently for a part...
by tvjon
Thu Feb 21, 2019 9:22 am
Forum: Raspbian
Topic: invert screen colors?
Replies: 9
Views: 1740

Re: invert screen colors?

Yes, it actually looks rather useful. For example if you need something on screen to attract your attention, just do $ sudo ./setgamma -l 7 -d 1000 -c 3 There are several mailbox.h files around in rpi land, but you need the one jamesh supplies, so just go to: https://github.com/JamesH65/setgamma whe...
by tvjon
Thu Feb 14, 2019 11:36 am
Forum: Graphics programming
Topic: gles & omx.resize deadlock
Replies: 25
Views: 2294

Re: gles & omx.resize deadlock

I tried waiting for the FillBufferDone callback and now it just hangs waiting for the callback. Same errors as before. Here's the code in another branch: https://github.com/piense/pi-omx-gles-bug/tree/atomic ... For the testImages folder containing 3 usable jpgs, 1 of which is delrod I posted earli...
by tvjon
Sun Feb 10, 2019 7:44 pm
Forum: Graphics programming
Topic: gles & omx.resize deadlock
Replies: 25
Views: 2294

Re: gles & omx.resize deadlock

Well, it's definitely improved, but a quick test suggests any jpg < 81920 bytes will fail, eg., the attached jpg.

I'll look at your changes later tonight. hopefully.
by tvjon
Sun Feb 10, 2019 1:17 pm
Forum: Graphics programming
Topic: gles & omx.resize deadlock
Replies: 25
Views: 2294

Re: gles & omx.resize deadlock

What f/w & kernel are the failing OS's, ie. $ sudo vcgencmd version $ uname -a I've run the new version for ~ 3 & a half hours with no failures on the 4.19.19-v7+ kernel (sudo BRANCH=next rpi-update) However using some of the jpg's here, eg. the attached, note the Allocating buffer size. $ ./omxtest...
by tvjon
Sat Feb 02, 2019 10:44 am
Forum: Graphics programming
Topic: gles & omx.resize deadlock
Replies: 25
Views: 2294

Re: gles & omx.resize deadlock

It's interesting to see how you go about doing this. I'm afraid I don't as yet have sufficient experience to fix the problem, but you may be interested in some feedback? Using your test.jpg I have similar lockups, so reboots necessary. It appears the size & resolution of a test.jpg are significant. ...
by tvjon
Fri Feb 01, 2019 11:36 am
Forum: Graphics, sound and multimedia
Topic: Timidity output device
Replies: 9
Views: 866

Re: Timidity output device

You beat me to it. As you have it working now, I was going to check that when less busy. There's other versions on Github too. I already had looked at the output of aplay -L, but thinking about it, probably not tried it with the Burr-Brown. Anyway, this does work, so hopefully will for you. Zipped a...
by tvjon
Thu Jan 31, 2019 10:41 pm
Forum: Graphics, sound and multimedia
Topic: Timidity output device
Replies: 9
Views: 866

Re: Timidity output device

Good find. It also works for my DAC, so that means at least for the IQ, & possibly other cards running timidity, a specific syntax is necessary, hmmm. $ timidity -v TiMidity++ version 2.14.0 omxplayer doesn't need X, so if you wanted to test it at some point, you could install it. Besides audio it's...

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