From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guilherme Subject: Understanding _snd_pcm_channel_area Struct (PCM Interface)! Date: Tue, 23 Jun 2009 02:40:35 -0300 Message-ID: <4A406AD3.2050002@gmail.com> References: <4A3DEAF9.80508@free.fr> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Received: from qw-out-1920.google.com (qw-out-1920.google.com [74.125.92.148]) by alsa0.perex.cz (Postfix) with ESMTP id CD18524541 for ; Tue, 23 Jun 2009 07:39:28 +0200 (CEST) Received: by qw-out-1920.google.com with SMTP id 9so1891738qwj.56 for ; Mon, 22 Jun 2009 22:39:27 -0700 (PDT) In-Reply-To: <4A3DEAF9.80508@free.fr> 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 Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Hi all. I am a bit confused on what I get with this function. I finished my first project but I did not understand what exactly the _snd_pcm_channel_area at http://www.alsa-project.org/alsa-doc/alsa-lib/struct__snd__pcm__channel__a= rea.html does. There are 3 fields in the documentation. addr, first and step. It seems that addr is the memory address of the channel samples... so = far so good. The "step" is the distance between 2 sample (but I am not = sure) and the least, "first", I could not figure out what does it means. Could I get some help from here? = Thanks in advanced! Tks! ------------------- Guilherme Longo Dept. Eng. da Computa=E7=E3o Unaerp Linux User - #484927 *Before Asking http://www.istf.com.br/?page=3Dperguntas !- I'd rather die on my feet than live on my knees -!