From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Graham Subject: Access to bytes from the raw audio stream? (AC'97) Date: Wed, 3 Feb 2010 16:08:38 +0000 Message-ID: <94cf76f1002030808t1d54dc08oab179673e814f016@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-bw0-f221.google.com (mail-bw0-f221.google.com [209.85.218.221]) by alsa0.perex.cz (Postfix) with ESMTP id 62A8710380F for ; Wed, 3 Feb 2010 17:08:40 +0100 (CET) Received: by bwz21 with SMTP id 21so1170040bwz.4 for ; Wed, 03 Feb 2010 08:08:39 -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@alsa-project.org List-Id: alsa-devel@alsa-project.org Hi there, I'm new to ALSA, and working on a project where I need to find out where I can see/modify the raw bytes coming in from/going out to a device. The device is an AC'97 codec (a philips UCB1400, if it makes any difference...) on an embedded board. I tried looking on the web, and found the tutorial at http://www.alsa-project.org/~tiwai/writing-an-alsa-driver/, but that seems to be more about device management and configuration. So, can anybody tell me what functions and files in the sound/ directory of the linux kernel I need to look at to see/modify the raw data stream coming in? Am I just missing something in the tutorial? I'd appreciate any suggestions very much. Thanks, John Graham