From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758719AbYETIKw (ORCPT ); Tue, 20 May 2008 04:10:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756426AbYETIKf (ORCPT ); Tue, 20 May 2008 04:10:35 -0400 Received: from out1.smtp.messagingengine.com ([66.111.4.25]:48744 "EHLO out1.smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758136AbYETIKa (ORCPT ); Tue, 20 May 2008 04:10:30 -0400 X-Sasl-enc: XYQpQ/mugL0OIYTY5nTF3H62YyiOT6xBMVFvWhyOCLsJ 1211271028 Message-ID: <48328771.4030804@ladisch.de> Date: Tue, 20 May 2008 10:10:25 +0200 From: Clemens Ladisch User-Agent: Thunderbird 2.0.0.14 (Windows/20080421) MIME-Version: 1.0 To: Kallol Biswas CC: Lee Revell , linux-kernel@vger.kernel.org Subject: Re: HDMI Audio Support in ALSA References: <438397970805190904i2656337dh26a3257fe52aa29d@mail.gmail.com> <75b66ecd0805190916r7ce21667laf19783dfa47cdd7@mail.gmail.com> <438397970805190938t195d9a8ejfd5b0ca1409714ab@mail.gmail.com> In-Reply-To: <438397970805190938t195d9a8ejfd5b0ca1409714ab@mail.gmail.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org (please don't top-post) Kallol Biswas wrote: > Can ALSA handle HDMI audio frames? It does not look so. Why do you think so? > Do you need a pointer to HDMI audio spec (L-PCM, IEC 60958 IEC 61937 etc.)? L-PCM is linear PCM, which is the sample format used by practically _every_ sound card. IEC 60958 is AES/EBU, which is essentially S/PDIF, which uses linear PCM samples. IEC 61937 specifies how to transport compressed streams over S/PDIF, by pretending the data stream is a sequence of linear PCM samples. All of this is supported by ALSA. Regards, Clemens