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by tvjon
Tue Jun 18, 2019 7:20 am
Forum: Graphics, sound and multimedia
Topic: Fluidsynth and jackd on RPI3 (raspbian) - broken audio via headphone jack
Replies: 1
Views: 45

Re: Fluidsynth and jackd on RPI3 (raspbian) - broken audio via headphone jack

Hi, I am running raspbian and I want to use fluidsynth to make a portable midi setup to connect to my usb midi keyboard. ... I am running from text linux to minimize the latency, so I don't even start X server to use fluidsynth; but it seems that it is not enough I wouldn't use jackd for that job. ...
by tvjon
Mon Jun 17, 2019 12:42 pm
Forum: Graphics, sound and multimedia
Topic: Audacity/Microphone - Raspberry Pi 3.
Replies: 3
Views: 102

Re: Audacity/Microphone - Raspberry Pi 3.

...t is an proper good investment - i know i was looking at buying some Pi cameras so kids could build and code a security system that emails photos on detection - the PS3 camera (might) be able to do similar. ... Well, that's the point really. Some of the folk I encounter don't have 2 (half) penni...
by tvjon
Mon Jun 17, 2019 10:58 am
Forum: Graphics, sound and multimedia
Topic: Audacity/Microphone - Raspberry Pi 3.
Replies: 3
Views: 102

Re: Audacity/Microphone - Raspberry Pi 3.

"So I have 20 Raspberry Pi that i use with kids for mostly Programming and STEM learning. I am running a summer camp in mid July and want to teach kids to record..." Sounds good! I would think about future projects with the children, & instead buy (now) cheap Sony PS3 usb webcams, & for your current...
by tvjon
Sun Jun 16, 2019 7:58 pm
Forum: Troubleshooting
Topic: Espeak alsa issue
Replies: 5
Views: 139

Re: Espeak alsa issue

Hlo iamnaresh I am doing project on raspberry pi 3 b+ and I just installed raspbian stretch .... I installed espeak by the command "Sudo apt-get install espeak" ... For applications like this I tend to build from source rather than apt install. So I downloaded espeak-ng from: https://github.com/esp...
by tvjon
Wed Jun 12, 2019 5:26 pm
Forum: Other projects
Topic: New Open Source AirPlay Mirroring Server
Replies: 1
Views: 262

Re: New Open Source AirPlay Mirroring Server

Thank you kindly for this. It built just fine, & I've just tested it with photo's from iOS 12.4 Next a video which is also fine, initially audio via HDMI. Next played another video, but no more audio. So, $ ./rpiplay -a analog & so far a couple of short videos, & audio is fine for both. Well done!
by tvjon
Fri May 24, 2019 11:04 am
Forum: Graphics, sound and multimedia
Topic: FBI is hardware accelerated?
Replies: 12
Views: 537

Re: FBI is hardware accelerated?

...The HW JPEG decoder isn't actually any faster than the faster ARM's on recent Pi's at decoding JPEG, once you take in the data transfers time to and from the GPU. That has not been my experience... Viewing the contents of a 30000+ folder of not too big photo's, Broadcom's jpeg decoder is signifi...
by tvjon
Tue May 21, 2019 2:59 pm
Forum: Beginners
Topic: Backing up the SDcard
Replies: 8
Views: 477

Re: Backing up the SDcard

Thanks, However, a second sdcard would work, too. There is only 1 microsd card reader on the raspberrry though, so I may have to find or purchase a second sdcard reader. Paul Having several µSD cards is a good idea I think. Unless you have a need to write & read SD cards, rather than µSD cards, I w...
by tvjon
Sun Apr 14, 2019 9:19 am
Forum: Beginners
Topic: How to connect a old keyboard to a PI?
Replies: 17
Views: 614

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: 252

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: 433

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: 675

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: 568
Views: 172874

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: 130

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: 410

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: 1846

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: 463

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: 463

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: 1155

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: 1155

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: 2295

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: 2295

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: 2295

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: 2295

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: 1926

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...

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