From owner-freebsd-multimedia@FreeBSD.ORG Mon Mar 7 03:04:25 2005 Return-Path: Delivered-To: freebsd-multimedia@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2757B16A4CE for ; Mon, 7 Mar 2005 03:04:25 +0000 (GMT) Received: from ns.kt-is.co.kr (ns.kt-is.co.kr [211.218.149.125]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9039643D31 for ; Mon, 7 Mar 2005 03:04:24 +0000 (GMT) (envelope-from yongari@kt-is.co.kr) Received: from michelle.kt-is.co.kr (ns2.kt-is.co.kr [220.76.118.193]) (authenticated bits=128) by ns.kt-is.co.kr (8.12.10/8.12.10) with ESMTP id j2730aAh002297 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Mon, 7 Mar 2005 12:00:37 +0900 (KST) Received: from michelle.kt-is.co.kr (localhost.kt-is.co.kr [127.0.0.1]) by michelle.kt-is.co.kr (8.13.1/8.13.1) with ESMTP id j2734JXB001090 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 7 Mar 2005 12:04:19 +0900 (KST) (envelope-from yongari@kt-is.co.kr) Received: (from yongari@localhost) by michelle.kt-is.co.kr (8.13.1/8.13.1/Submit) id j2734J8n001089; Mon, 7 Mar 2005 12:04:19 +0900 (KST) (envelope-from yongari@kt-is.co.kr) Date: Mon, 7 Mar 2005 12:04:19 +0900 From: Pyun YongHyeon To: Alexander Leidinger Message-ID: <20050307030419.GC951@kt-is.co.kr> References: <20050305224005.GC4237@cnd.mcgill.ca> <20050306162811.694d9c82@Magellan.Leidinger.net> <20050306171027.GE4237@cnd.mcgill.ca> <20050306184416.5603976c@Magellan.Leidinger.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050306184416.5603976c@Magellan.Leidinger.net> User-Agent: Mutt/1.4.2.1i X-Filter-Version: 1.11a (ns.kt-is.co.kr) cc: freebsd-multimedia@freebsd.org cc: Mathew Kanner Subject: Re: uaudio patch, configurable buffer size X-BeenThere: freebsd-multimedia@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: yongari@kt-is.co.kr List-Id: Multimedia discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Mar 2005 03:04:25 -0000 On Sun, Mar 06, 2005 at 06:44:16PM +0100, Alexander Leidinger wrote: > > So either we need a format converter in the kernel (looks ugly to me, it > belongs IMHO into the userland, but NetBSD seems to have this > possibility in the kernel), or we need to reject incompatible use. > AFAIK, we already have format converter in kernel. See feeder_fmt.c. The converter detects differences between hardware capabilities and audio samples and automatically converts it(e.g. big endian <->little endian, mono <-> stereo, signed <-> unsigned, ulaw<->alow etc). -- Regards, Pyun YongHyeon http://www.kr.freebsd.org/~yongari | yongari@freebsd.org