From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: Driver for a codec with built-in DSP for MP3 playback Date: Mon, 15 Mar 2010 16:15:07 +0000 Message-ID: <20100315161507.GA15568@rakim.wolfsonmicro.main> References: <20100315141404.GA13878@sirena.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from opensource2.wolfsonmicro.com (opensource.wolfsonmicro.com [80.75.67.52]) by alsa0.perex.cz (Postfix) with ESMTP id 0858B244E8 for ; Mon, 15 Mar 2010 17:15:09 +0100 (CET) Content-Disposition: inline In-Reply-To: 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: Dajun Chen Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org On Mon, Mar 15, 2010 at 04:01:34PM +0000, Dajun Chen wrote: Please don't top post, lack of context makes it difficult to follow the thread of discussion. > I mean example code of a driver which works either on PCM and MP3 (or other > compressed) audio stream. ALSA only handles PCM streams itself, compressed audio needs to be handled separately. The TI DSP stuff is one example of handling compressed audio, or the Intel Moorestown drivers, but since there's no standard for that stuff at the kernel level there's not much to look at.