From owner-freebsd-usb@FreeBSD.ORG  Tue May 28 10:34:30 2013
Return-Path: <owner-freebsd-usb@FreeBSD.ORG>
Delivered-To: freebsd-usb@freebsd.org
Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115])
 by hub.freebsd.org (Postfix) with ESMTP id DF17C546
 for <freebsd-usb@freebsd.org>; Tue, 28 May 2013 10:34:30 +0000 (UTC)
 (envelope-from hps@bitfrost.no)
Received: from mta.bitpro.no (mta.bitpro.no [92.42.64.202])
 by mx1.freebsd.org (Postfix) with ESMTP id A4FD3B75
 for <freebsd-usb@freebsd.org>; Tue, 28 May 2013 10:34:30 +0000 (UTC)
Received: from mail.bitfrost.no (mail.bitfrost.no [46.29.221.36])
 by mta.bitpro.no (Postfix) with ESMTP id B5F5B7A220;
 Tue, 28 May 2013 12:23:21 +0200 (CEST)
X-Virus-Scanned: Debian amavisd-new at bitfrost.no
Received: from laptop015.hselasky.homeunix.org (unknown [10.220.1.65])
 (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
 (No client certificate requested) (Authenticated sender: hanspetter)
 by mail.bitfrost.no (Postfix) with ESMTPSA id 36E7720CE3;
 Tue, 28 May 2013 12:23:08 +0200 (CEST)
Message-ID: <51A485E6.4030901@bitfrost.no>
Date: Tue, 28 May 2013 12:24:38 +0200
From: Hans Petter Selasky <hps@bitfrost.no>
Organization: Bitfrost A/S
MIME-Version: 1.0
To: Jakub Lach <jakub_lach@mailplus.pl>
Subject: Re: Any recent changes in usb audio in 9-STABLE?
References: <1369697546368-5815619.post@n5.nabble.com>
In-Reply-To: <1369697546368-5815619.post@n5.nabble.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: freebsd-usb@freebsd.org
X-BeenThere: freebsd-usb@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: FreeBSD support for USB <freebsd-usb.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-usb>,
 <mailto:freebsd-usb-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-usb>
List-Post: <mailto:freebsd-usb@freebsd.org>
List-Help: <mailto:freebsd-usb-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-usb>,
 <mailto:freebsd-usb-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 28 May 2013 10:34:30 -0000

On 05/28/13 01:32, Jakub Lach wrote:
> Which would explain why I now have dev.pcm.0.play.vchanrate: 48000
> if bitperfect is set, while previously it was dev.pcm.0.play.vchanrate:
> 96000 ?
>
> e.g. now if bitperfect is set-
>
> AUDIO: 44100 Hz, 2 ch, s16le, 0.0 kbit/0.00% (ratio: 0->176400)
> Selected audio codec: [ffwavpack] afm: ffmpeg (FFmpeg WavPack audio)
> AO: [oss] 48000Hz 2ch s16le (2 bytes per sample)
>
> previously-
>
> AUDIO: 44100 Hz, 2 ch, s16le, 0.0 kbit/0.00% (ratio: 0->176400)
> Selected audio codec: [ffwavpack] afm: ffmpeg (FFmpeg WavPack audio)
> AO: [oss] 96000Hz 2ch s16le (2 bytes per sample)
>
> No change with bitperfect=0
>
> AUDIO: 44100 Hz, 2 ch, s16le, 0.0 kbit/0.00% (ratio: 0->176400)
> Selected audio codec: [ffwavpack] afm: ffmpeg (FFmpeg WavPack audio)
> AO: [oss] 44100Hz 2ch s16le (2 bytes per sample)
>
> Device is 96000Hz 2ch s24le capable.
>
> I thought bitperfect would disable any resampling so stream should
> be the same as source or (as I thought when 96000 appeared) highest
> supported by device?
>

Yes,

Set "vchanmode" to "adaptive".

9-stable now supports more hardware rates.

--HPS