[LAU] html5 audio through jack

rob rob at rektau.ukfsn.org
Sat Aug 30 17:03:57 UTC 2014


On 30/08/14 13:09, Kazakore wrote:
>
> On 30/08/14 16:23, Iain Mott 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,
>>
>> _______________________________________________
>> Linux-audio-user mailing list
>> Linux-audio-user at lists.linuxaudio.org
>> http://lists.linuxaudio.org/listinfo/linux-audio-user
>
> Can't help but can tell you I have the exact same problem! I also don't
> get audio from streaming media directly from the internet (eg a web
> hosted .ogg) Have you managed to get that working? I use VLC's
> Multimedia Plugin for firefox, VLC is set to Jack, also have all
> GStreamer routed through Jack, but "normal" firefox audio never reaches it.
>
> Good luck with this one. It's part of the reason Arch is feeling so
> appealing to me right now. I can truly get a system with no P(IT)A in
> there! ;-)
>
> Dale.
>
> _______________________________________________

http://alsa.opensrc.org/Jack_and_Loopback_device_as_Alsa-to-Jack_bridge 
might be worth looking at.

rob




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