From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clemens Ladisch Subject: Re: OSX Core Audio ASYNC OUT with rate feedback format ? Date: Fri, 01 Oct 2010 08:47:28 +0200 Message-ID: <4CA58400.4010506@ladisch.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from out5.smtp.messagingengine.com (out5.smtp.messagingengine.com [66.111.4.29]) by alsa0.perex.cz (Postfix) with ESMTP id A2A7B1039C4 for ; Fri, 1 Oct 2010 08:46:37 +0200 (CEST) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: Alex Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Alex wrote: > I have successfully interfaced the sdr-widget with Linux alsa-driver for ASYNC > OUT with rate feedback. Found out after much trial and error and reading of the > usbaudio alsa-driver source code that you are using 12.13 as the format for the > feedback rate !!! I was trying with 10.14 (UAC1 v1.2 specs, I think) in 3 bytes, > and 16.16 (USB 2.0) in 4 bytes for quite a number of days with no success !!! > > However, 12.13 in 4 bytes, whilst working like a charm with Linux, does NOT work > with OSX. Linux currently doesn't look at the endpoint packet size to determine the feedback format. I'll change the driver so that it accepts any format. Regards, Clemens