From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vinod Koul Subject: Re: [RFC] AXD Audio Processing IP ALSA support - Questions Date: Tue, 4 Nov 2014 16:10:50 +0530 Message-ID: <20141104104050.GI1870@intel.com> References: <5458A0E2.4010602@imgtec.com> <5458A35C.9050405@ladisch.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by alsa0.perex.cz (Postfix) with ESMTP id B27D42612AD for ; Tue, 4 Nov 2014 11:40:29 +0100 (CET) Content-Disposition: inline In-Reply-To: <5458A35C.9050405@ladisch.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: Clemens Ladisch Cc: alsa-devel@alsa-project.org, Qais Yousef , Neil Jones , Lars-Peter Clausen List-Id: alsa-devel@alsa-project.org On Tue, Nov 04, 2014 at 10:58:52AM +0100, Clemens Ladisch wrote: > Qais Yousef wrote: > > 3- Can we get an example of how transcoding (back to disk) is supposed to be working? > > ALSA PCM devices are assumed to run with their own clock, i.e., it is > not directly possible for applications to control when a playback device > reads data from the ring buffer, of when a capture device writes data to > it. The ALSA API is designed for real-time opertation; it would not be > a good choice for batch conversions. ALSA Compressed devices can be used here -- ~Vinod