Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752305AbWAFACc (ORCPT ); Thu, 5 Jan 2006 19:02:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752306AbWAFACb (ORCPT ); Thu, 5 Jan 2006 19:02:31 -0500 Received: from host1.compusonic.fi ([195.238.198.242]:34150 "EHLO minor.compusonic.fi") by vger.kernel.org with ESMTP id S932303AbWAFACQ (ORCPT ); Thu, 5 Jan 2006 19:02:16 -0500 Date: Fri, 6 Jan 2006 01:59:37 +0200 (EET) From: Hannu Savolainen X-X-Sender: hannu@zeus.compusonic.fi To: Lee Revell Cc: Takashi Iwai , linux-sound@vger.kernel.org, LKML Subject: Re: [OT] ALSA userspace API complexity In-Reply-To: <1136504460.847.91.camel@mindpipe> Message-ID: References: <20050726150837.GT3160@stusta.de> <20060103193736.GG3831@stusta.de> <20060104030034.6b780485.zaitcev@redhat.com> <1136504460.847.91.camel@mindpipe> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1210 Lines: 30 On Thu, 5 Jan 2006, Lee Revell wrote: > On Fri, 2006-01-06 at 01:06 +0200, Hannu Savolainen wrote: > > We have not received any single bug report that is caused > > by the concept of kernel mixing. > > Kernel mixing is not rocket science. All you need to do is picking a > > sample from the output buffers of each of the applications, sum them > > together (with some volume scaling) and feed the result to the > > physical > > device. > > Hey, interesting, this is exactly what dmix does in userspace. And we > have not seen any bug reports caused by the concept of userspace mixing > (just implementation bugs like any piece of software). Having dmix working in user space doesn't prove that kernel level mixing is evil. This was the original topic. Best regards, Hannu ----- Hannu Savolainen (hannu@opensound.com) http://www.opensound.com (Open Sound System (OSS)) http://www.compusonic.fi (Finnish OSS pages) OH2GLH QTH: Karkkila, Finland LOC: KP20CM - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/