From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 7 Mar 2002 23:13:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 7 Mar 2002 23:12:51 -0500 Received: from mail3.panix.com ([166.84.1.74]:62443 "HELO mail3.panix.com") by vger.kernel.org with SMTP id ; Thu, 7 Mar 2002 23:12:46 -0500 From: "R. Bernstein" Message-ID: <15496.14909.786805.71538@panix3.panix.com> Date: Thu, 7 Mar 2002 23:12:45 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit To: linux-kernel@vger.kernel.org Subject: audio channel routinng in "Linux CD-ROM Standard"? X-Mailer: VM 6.90 under Emacs 20.7.1 Reply-To: rocky@panix.com Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I was reading ``A Linux CD-ROM Standard'' of 12 March 1999 (/usr/src/linux/Documentation/cdrom/cdrom-standard.tex) in order to understand how audio channel routing might be performed in this standard. I don't see where it would be put in. By "audio channel routing" I mean having the left channel routed to the right (e.g. left monaural), or having the stereo channels come out reversed. In looking at a CD-playing program xmcd, I see it has a provision for a SCSI CDs to issue such a routing command, but when it uses this protocol, it unconditionally disables this ability since it doesn't seem to be part of the protocol. If you however enable CONFIG_BLK_DEV_IDESCSI the routing can be set via the SCSI passthrough ioctl mechanism -- but then why have a cdrom standard in the first place? I don't know if this is the right place to direct inqueries as to the future of this protocol. If this would better be directed elsewhere, sorry, let me know where I should post a query. I sent a inquiry to the email addresses in A Linux CD-ROM Standard and haven't heard back from nary a one. I am not subscribed to this forum, so I'd appreciate replies cc'd to me. Many thanks.