Re: [Jack-Devel] porting jack to android

On Sat, October 20, 2012 10:29 am, Roger Critchlow wrote:
> I found a patch on xdadev a few weeks ago that dropped the audio latency
> on
> my new Galaxy Nexus down to 18ms from 40 or 60ms. The OTA update to 4.1.2
> that installed the other day appears to have the patch in it.
>

The Linux Kernel has been capable of sub 2.5ms latency for almost 10 years
now which predates Android development significantly. The sound chips on
most Android devices are capable of getting down to 5ms.



> -- rec --
>
> On Fri, Oct 19, 2012 at 4:45 PM, Patrick Shirkey
> <[hidden]
>> wrote:
>
>>
>> On Sat, October 20, 2012 8:44 am, leonardo wrote:
>> > ArthurX <arthurx <at> gmail.com> writes:
>> >
>> >>
>> >> Hi all,thanks for all the good  work on jack,I use it for almost a
>> year
>> >> now to
>> > record audio with ardour at home,and recently take is to rehearshal
>> and
>> on
>> > stage.It works almost always perfectly, after getting used to it and
>> some
>> > finetuning.But for the live performanc,monitoring is quite important
>> for
>> > the
>> > singer, gitarist etc,so I was considering in-ear-monitoring,because it
>> > seems to
>> > work really good,but the devices are about 170 euro each,
>> >> and then I was playing and reading about netjack,and thinking, heh if
>> it
>> >> could
>> > work on android devices over the wifi,woud be the perfect
>> > solution.Monitoring is
>> > not as critical with regards to dropoutsas wireless instruments or
>> voice.I
>> > did
>> > read a recent post on your mailing list about android,what would be
>> the
>> > use of
>> > porting it,well, for me that would be this,Thanks and greetings Arthur
>> >>
>> >> 
>> >> Jack-Devel mailing list
>> >> Jack-Devel <at> lists.jackaudio.org
>> >> http://lists.jackaudio.org/listinfo.cgi/jack-devel-jackaudio.org
>> >>
>> >
>> >
>> > Hi man, I've been researching about android audio routing and before
>> get
>> > here I
>> > just saw this page that maybe can help us...
>> >
>> > http://nettoyeur.noisepages.com/2010/09/hello-world/
>> >
>> > I'm just reading about it but I think this is what you are looking
>> for...
>> >
>> > hopes this be useful.
>> >
>>
>> Unfortunately, the developers in charge of the Android sound system
>> chose
>> to implement a new soundlayer (audioflinger) that is not low latency
>> capable or flexible enough to accomodate JACK in it's current state
>> which
>> means that any port of JACK to Android will be crippled and of little
>> value/use for professional requirements.
>>
>> Most Linux Audio Developers agree that the only way around this after
>> three years of almost zero progress for professional audio requirements
>> from Google is to ignore Android and work with hardware that can run the
>> normal Linux Audio Stack.
>>
>> Given the progress from Intel and ARM with new hardware capable of
>> running
>> x86 and the advances in the Linux Desktop it should not be long before
>> we
>> will see native Linux systems on the latest mobile devices and we can
>> forget about the lack of interest from Google in professional audio
>> requirements on Android.
>>
>> The simple truth appears to be that Google just doesn't get pro audio.
>>
>>
>>
>> --
>> Patrick Shirkey
>> Boost Hardware Ltd
>> 
>> Jack-Devel mailing list
>> [hidden]
>> http://lists.jackaudio.org/listinfo.cgi/jack-devel-jackaudio.org
>>
>


--
Patrick Shirkey
Boost Hardware Ltd

1350690419.2751_0.ltw:2,a <60103.58.106.88.60.1350690402.squirrel at boosthardware dot com>