From: Marcel Holtmann <marcel@holtmann.org>
To: bluez-devel@lists.sourceforge.net
Subject: Re: [Bluez-devel] Nokia 770 and bluetooth audio
Date: Sun, 09 Oct 2005 11:14:40 +0200 [thread overview]
Message-ID: <1128849280.15821.7.camel@blade> (raw)
In-Reply-To: <4348AF2B.4030301@xmission.com>
Hi Brad,
> > if I am not mistaken, then the integration into GStreamer will solve all
> > the problems. However we need a good SBC encoder for this first. May you
> > wanna give an update on its current status.
>
> Victor's changes to our encoder give reasonable performance on arm (<10%
> of cpu on an arm9 400mhz I think). It uses 64-bit integer math and we
> expect there is room for even more optimization using a lossier 32-bit
> version (the 32-bit stuff is stubbed out but disabled for now since it's
> incomplete)
from what other people told me about SBC, a 32-bit version will be
enough for good quality audio.
> In addition to switching to integer ops, Victor unrolled loops and
> reworked some of the tables so less stuff has to be computed at runtime.
I also heard that there are a lot of possible optimizations, because the
example code in the specification sucks totally.
Regards
Marcel
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next prev parent reply other threads:[~2005-10-09 9:14 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-07 22:35 [Bluez-devel] Nokia 770 and bluetooth audio Brad Midgley
2005-10-08 12:33 ` Marcel Holtmann
2005-10-09 5:48 ` Brad Midgley
2005-10-09 9:14 ` Marcel Holtmann [this message]
2005-10-09 12:25 ` Victor Shchebatyuk
2005-10-09 13:22 ` Marcel Holtmann
2005-10-09 15:49 ` Brad Midgley
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