Re: [LAU] Linux audio droid?

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To: <jeremy@...>, <linux-audio-user@...>
Date: Sunday, February 14, 2010 - 10:21 am

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The Nexus One has a '600MHz' FPU on its Qualcomm ARM core. I doubt if=20
that will translate into 600 MFlops as there will be performance degredatio=
n=20
and any app has to be quite specifically coded to actually use the FPU=2C a=
bit
like you have to code specifically for MMX and SSE on Intel architectures=
=2C
the compiler does not do this automatically.

If the code does not optimise onto the architecture you end up with soft fl=
oats
and consequent performanace limitations. I wouldn't imagine softfloats bein=
g
be a big issue for Jack itself but may be for any code that wanted to do an=
y DSP
on the audio distributed by Jack.

You also need to consider that having limited FPU performance may imply=20
having multiple apps running DSP code is out of the question=2C which impl=
ies=20
Jack (as an audio distribution server) is of limited use.

Android is an interesting platform though=2C not least because it does have=
=20
reasonable horsepower on the Nexus and it is multitasking. Why the iPhone=20
dropped that capability beats a lot of people.

How much are you looking to do on it?

Kind regards=2C nick.

"we have to make sure the old choice [Windows] doesn't disappear=94.
Jim Wong=2C president of IT products=2C Acer

> Date: Sun=2C 14 Feb 2010 10:28:47 +0100

of them run JACK?
challenge would be to see if I can get on that fits in my pocket.
=20
_________________________________________________________________
Hotmail: Free=2C trusted and rich email service.
https://signup.live.com/signup.aspx?id=3D60969=

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The Nexus One has a '600MHz' FPU on its Qualcomm ARM core. I doubt if t=
hat will translate into 600 MFlops as there will be performance degredation=
and any app has to be quite specifically coded to actually use the FPU=
=2C a bitlike you have to code specifically for MMX and SSE on Intel ar=
chitectures=2Cthe compiler does not do this automatically.If th=
e code does not optimise onto the architecture you end up with soft floats<=
br>and consequent performanace limitations. I wouldn't imagine softfloats b=
eingbe a big issue for Jack itself but may be for any code that wanted =
to do any DSPon the audio distributed by Jack.You also need to =
consider that having limited FPU performance may imply having multiple =
apps running DSP code is out of the question=2C&nbsp=3B which implies J=
ack (as an audio distribution server) is of limited use.Android is =
an interesting platform though=2C not least because it does have reason=
able horsepower on the Nexus and it is multitasking. Why the iPhone dro=
pped that capability beats a lot of people.How much are you looking=
to do on it?Kind regards=2C nick."we have to make sure the=
old choice [Windows] doesn't disappear=94.Jim Wong=2C president of IT =
products=2C Acer&gt=3B Date: Sun=2C 14 Feb 2010 10:28:4=
7 +0100&gt=3B From: jeremy@autostatic.com&gt=3B To: linux-audio-use=
r@lists.linuxaudio.org&gt=3B Subject: Re: [LAU] Linux audio droid?&=
gt=3B &gt=3B Ken Restivo wrote:&gt=3B &gt=3B Just curious: do any o=
f the Android-capable phones have an FPU? Can any of them run JACK?&gt=
=3B &gt=3B &gt=3B &gt=3B I've got a Linux audio instrument that fits in=
my backpack=3B the next challenge would be to see if I can get on that fit=
s in my pocket.&gt=3B &gt=3B &gt=3B &gt=3B -ken&gt=3B &gt=3B __=
_____________________________________________&gt=3B &gt=3B Linux-audio-=
user mailing list&gt=3B &gt=3B Linux-audio-user@lists.linuxaudio.org&gt=3B &gt=3B http://lists.linuxaudio.org/listinfo/linux-audio-user&gt=
=3B &gt=3B Just had my first cup of coffee... Sorry Ken.&gt=3B =
&gt=3B Hello Ken=2C&gt=3B &gt=3B The Motorola Droid (or Milestone) =
and its little brother the Droid&gt=3B Devour have FPU's. You can also =
run Android on the Nokia N900 which has&gt=3B an FPU also. And then the=
re's the Nexus One.&gt=3B I'm sharing your curiosity so I'll keep an ey=
e on this thread.&gt=3B &gt=3B Best=2C&gt=3B &gt=3B Jeremy<=
br>&gt=3B _______________________________________________&gt=3B Linux-a=
udio-user mailing list&gt=3B Linux-audio-user@lists.linuxaudio.org&=
gt=3B http://lists.linuxaudio.org/listinfo/linux-audio-user =
Hotmail: Free=2C trusted and rich email service. Get it now.
=

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Messages in current thread:
[LAU] Linux audio droid?, Ken Restivo, (Sun Feb 14, 2:44 am)
Re: [LAU] Linux audio droid?, Olivier Guilyardi, (Thu Feb 18, 1:45 pm)
Re: [LAU] Linux audio droid?, Olivier Guilyardi, (Thu Feb 18, 1:57 pm)
Re: [LAU] Linux audio droid?, Ken Restivo, (Thu Feb 18, 7:00 pm)
Re: [LAU] Linux audio droid?, Olivier Guilyardi, (Fri Feb 19, 11:24 am)
Re: [LAU] Linux audio droid?, Ivica Ico Bukvic, (Thu Feb 18, 4:34 pm)
Re: [LAU] Linux audio droid?, Olivier Guilyardi, (Thu Feb 18, 5:54 pm)
Re: [LAU] Linux audio droid?, Patrick Shirkey, (Thu Feb 18, 2:16 pm)
Re: [LAU] Linux audio droid?, Rob, (Thu Feb 18, 6:47 pm)
Re: [LAU] Linux audio droid?, rob, (Sun Feb 14, 2:16 pm)
Re: [LAU] Linux audio droid?, Jeremy, (Sun Feb 14, 9:28 am)
Re: [LAU] Linux audio droid?, Nick Copeland, (Sun Feb 14, 10:21 am)
Re: [LAU] Linux audio droid?, Arnold Krille, (Sun Feb 14, 11:07 am)
Re: [LAU] Linux audio droid?, Gabriel M. Beddingfield, (Sun Feb 14, 5:59 pm)
Re: [LAU] Linux audio droid?, Ken Restivo, (Sun Feb 14, 7:36 pm)
Re: [LAU] Linux audio droid?, Arnold Krille, (Mon Feb 15, 9:42 am)
Re: [LAU] Linux audio droid?, torbenh, (Sun Feb 14, 4:01 pm)
Re: [LAU] Linux audio droid?, Patrick Shirkey, (Sun Feb 14, 12:32 pm)