From mboxrd@z Thu Jan 1 00:00:00 1970 From: Liam Girdwood Subject: Re: soc-dsp questions Date: Mon, 13 Jun 2011 18:49:51 +0100 Message-ID: <4DF64DBF.4020908@ti.com> References: <1303810865.3332.57.camel@odin> <20110426101848.GA23812@sirena.org.uk> <4DF1C08F.90306@codeaurora.org> <20110610094226.GA26436@opensource.wolfsonmicro.com> <4DF2C2BD.6050505@codeaurora.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from comal.ext.ti.com (comal.ext.ti.com [198.47.26.152]) by alsa0.perex.cz (Postfix) with ESMTP id E1E9A24367 for ; Mon, 13 Jun 2011 19:49:58 +0200 (CEST) In-Reply-To: <4DF2C2BD.6050505@codeaurora.org> 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: Patrick Lai Cc: "alsa-devel@alsa-project.org" , Mark Brown , "waiw@codeaurora.org" , pl bossart , "asishb@codeaurora.org" , "jaywang@codeaurora.org" , Liam Girdwood List-Id: alsa-devel@alsa-project.org On 11/06/11 02:19, Patrick Lai wrote: > On 6/10/2011 2:42 AM, Mark Brown wrote: > >> >> That might be handlable by either of the methods I was suggesting above. >> Of course depending on the algorithms you're running the DSP may want >> more mics than it's producing output channels - beam forming or noise >> cancellation are the obvious examples there. > > Yes, exactly. > >> Do you mean not also a concern? I *believe* OMAP is passing the >> configuration through to the external DAI using the front end/back end >> connection so the format gets selected by the app when it does a record, > This is correct. We pass configuration from the FE PCM to all the connected BE DAIs. Liam