From mboxrd@z Thu Jan 1 00:00:00 1970 From: Patrick Lai Subject: Multiple channels mapping Date: Tue, 07 Feb 2012 17:02:00 -0800 Message-ID: <4F31C988.3090201@codeaurora.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from wolverine01.qualcomm.com (wolverine01.qualcomm.com [199.106.114.254]) by alsa0.perex.cz (Postfix) with ESMTP id 712F8103842 for ; Wed, 8 Feb 2012 02:02:21 +0100 (CET) Received: from [10.64.14.94] (pdmz-snip-v218.qualcomm.com [192.168.218.1]) by mostmsg01.qualcomm.com (Postfix) with ESMTPA id 496BB10004D1 for ; Tue, 7 Feb 2012 17:02:01 -0800 (PST) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: alsa-devel List-Id: alsa-devel@alsa-project.org Hi, The DSP I am working on supports channel assignments similar to ALSA route plug-in described in this link http://drona.csa.iisc.ernet.in /~uday/alsamch.shtml. I am currently looking a way to pass channel/speaker mapping information of PCM stream( i.c channel 0 -> Front Left speaker, channel 1 -> Front Right speaker) to ALSA driver. I looked at latest kernel tree and don't think there is already provision for my purpose. Can anyone confirm? If I were to improvise a way to pass channel/speaker mapping information, should I follow the same approach similar to how bits per sample and other hardware parameter is passed? Thanks Patrick -- Sent by an employee of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.