Re: [LAU] html5 audio through jack

Thanks Marc - I got it working with these links; installing the
pulseaudio-module-jack package mentioned in the first link, then
preparing the scripts launched by qjackctl in the second. Pretty sure
that's what I did. I also used the .asoundrc as given in my original
post.
Iain

Em Dom, 2014-08-31 às 18:45 -0400, Marc Lavallée escreveu:
> I play the audio output of my browsers (Firefox and Chrome/Chromium)
> through jack. It works with HTML5 and Flash.
>
> https://docs.fedoraproject.org/en-US/Fedora/18/html/Musicians_Guide/sect-Musicians_Guide-Integrating_PulseAudio_with_JACK.html
>
> https://wiki.archlinux.org/index.php/PulseAudio/Examples#PulseAudio_through_JACK
>
> The pulseaudio "jack" sink register as a 8 channels playback source in
> jack, so it works with 5.1 and 7.1 streams, not only for stereo streams.
>
> --
> Marc
>
> Le Sun, 31 Aug 2014 21:42:50 +0200,
> Philipp Überbacher <murks@tuxfamily.org> a écrit :
>
> > On Sat, 30 Aug 2014 07:38:33 -0300
> > Iain Mott <mott@reverberant.com> wrote:
> >
> > >
> > > Hi list,
> > >
> > > I'm thinking of updating some of my web pages to use multi-platform
> > > flash/html5 audio players, at present they use flash only and won't
> > > play on iPads for example.
> > >
> > > Due to some problems I was having with pulse audio in relation to my
> > > HDSP interface I have recently disabled it and all my audio is
> > > running via jack/alsa and the HDSP interface. With flash in firefox,
> > > there are no problems and the audio plays. My .asoundrc is
> > > configured with the following:
> > >
> > > pcm.rawjack {
> > > type jack
> > > playback_ports {
> > > 0 system:playback_1
> > > 1 system:playback_2
> > > }
> > > capture_ports {
> > > 0 system:capture_1
> > > 1 system:capture_2
> > > }
> > > }
> > >
> > > pcm.jack {
> > > type plug
> > > slave { pcm "rawjack" }
> > > hint {
> > > description "JACK Audio Connection Kit"
> > > }
> > > }
> > >
> > >
> > > pcm.!default {
> > > type plug
> > > slave { pcm "rawjack" }
> > > }
> > >
> > >
> > >
> > > HTML5 players in firefox don't play however via jack. When pulse was
> > > enabled, HTML5 content would play through the computer's built-in
> > > sound card. Now that it's disabled I can't get it to play through
> > > jack.
> > >
> > > An example page with a HTML5 player is here:
> > >
> > > http://www.html5tutorial.info/html5-audio.php
> > >
> > > Any suggestions please? A modification of the .asoundrc?
> > >
> > > I'm running Ubuntu 14.04
> > >
> > > Thanks,
> >
> > I'm not surprised. I am very much against anything audio (or
> > multimedia) in browsers. Nowadays browsers do pretty much everything,
> > but badly. One constant grieve for me since years has been that there
> > are virtually no audio settings for the browser (for example search
> > for 'audio' in firefox about:config). It just takes whatever it can
> > find, whatever is default on the system, and plays back through the
> > first two channels. It may work for 95% of the users, but if you're
> > part of the remaining 5% you can't do anything about it.
> > For that reason alone doing any specialised multimedia thing for the
> > browser is just crazy, there is basically no user control.
> > In your particular case I think it is the flash plugin itself that
> > handled audio output, and now with html5 it is the browser that does
> > it,and probably does something stupid. Maybe the way it rubs the ALSA
> > API the wrong way. It is really hard to say what's going on in a
> > browser.
> >
> > Sorry to be of little help.
> >
> > Philipp
> > _______________________________________________
> > Linux-audio-user mailing list
> > Linux-audio-user@lists.linuxaudio.org
> > http://lists.linuxaudio.org/listinfo/linux-audio-user
> >
>
> _______________________________________________
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> Linux-audio-user@lists.linuxaudio.org
> http://lists.linuxaudio.org/listinfo/linux-audio-user

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Received on Wed Sep 3 20:15:02 2014