From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clemens Ladisch Subject: Re: [PATCH 1/2] ALSA: add LaCie Firewire Speakers/Griffin FireWave surround driver Date: Mon, 07 Feb 2011 15:56:25 +0100 Message-ID: <4D500819.1020309@ladisch.de> References: <4D46933D.5050609@ladisch.de> <4D4FB7C8.7090501@ladisch.de> <4D4FB7F6.8000801@ladisch.de> <20110207154025.13fdeba3@stein> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from out1.smtp.messagingengine.com (out1.smtp.messagingengine.com [66.111.4.25]) by alsa0.perex.cz (Postfix) with ESMTP id A24E5243EF for ; Mon, 7 Feb 2011 15:55:23 +0100 (CET) In-Reply-To: <20110207154025.13fdeba3@stein> 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: Stefan Richter Cc: alsa-devel@alsa-project.org, linux1394-devel@lists.sourceforge.net, Jay Fenlason List-Id: alsa-devel@alsa-project.org Stefan Richter wrote: > I am going to test this driver with LaCie FireWire Speakers and Griffin > FireWave RSN. BTW, FireWave is a 6-channel-out device which is targeted to > be used on OS X as either a stereo or a 5.1-Dolby-surround output. I heard > that the 5.1 mode is configured by a vendor-specific AV/C command. (The > FireWave was sold with an OS X driver; without this vendor driver it just > works as a stereo-out soundcard with OS X' stock driver.) Jay has already tested the FireWave in 6-channel mode; in fact, this was the only format that the previous patch supported for the FireWave. If OS X works with two channels without knowing that the device expects six, this implies that the device automatically detects the format of the incoming stream, and that sending Dolby data (which would just be two-channel data labeled as "SPDIF") should work too. Regards, Clemens