From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261217AbVC2WS5 (ORCPT ); Tue, 29 Mar 2005 17:18:57 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261546AbVC2WOv (ORCPT ); Tue, 29 Mar 2005 17:14:51 -0500 Received: from viper.oldcity.dca.net ([216.158.38.4]:3565 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S261569AbVC2WNG (ORCPT ); Tue, 29 Mar 2005 17:13:06 -0500 Subject: Re: Mac mini sound woes From: Lee Revell To: Marcin Dalecki Cc: Benjamin Herrenschmidt , Linux Kernel list , Takashi Iwai In-Reply-To: References: <1111966920.5409.27.camel@gaston> <1112067369.19014.24.camel@mindpipe> <4a7a16914e8d838e501b78b5be801eca@dalecki.de> <1112084311.5353.6.camel@gaston> Content-Type: text/plain Date: Tue, 29 Mar 2005 17:13:04 -0500 Message-Id: <1112134385.5386.22.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Evolution 2.2.1.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2005-03-29 at 11:22 +0200, Marcin Dalecki wrote: > No. You didn't get it. I'm taking the view that mixing sound is simply > a task you would typically love to make a DSP firmware do. > However providing a DSP for sound processing at 44kHZ on the same > PCB as an 1GHZ CPU is a ridiculous waste of resources. Thus most > hardware > vendors out there decided to use the main CPU instead. Thus the > "firmware" > is simply running on the main CPU now. Now where should it go? I'm > convinced > that its better to put it near the hardware in the whole stack. You > think > it's best to put it far away and to invent artificial synchronization > problems between different applications putting data down to the > same hardware device. This is the exact line of reasoning that led to Winmodems. Lee