From mboxrd@z Thu Jan  1 00:00:00 1970
From: Takashi Iwai <tiwai@suse.de>
Subject: Re: ALSA patch Nvidia 8 channel hdmi audio
Date: Fri, 05 Jun 2009 07:40:58 +0200
Message-ID: <s5hbpp31bmd.wl%tiwai@suse.de>
References: <410e92830906021458x3d47a1d6jebba8bbe1150e76d@mail.gmail.com>
	<200906030022.07693.marek.vasut@gmail.com>
	<410e92830906021530l767478c4tae72c4b161583b6@mail.gmail.com>
	<200906030200.54455.marek.vasut@gmail.com>
	<15F501D1A78BD343BE8F4D8DB854566B058A63F1@hkemmail01.nvidia.com>
	<410e92830906030100m5a3d045dsa856382fa2396e60@mail.gmail.com>
	<15F501D1A78BD343BE8F4D8DB854566B058A63F2@hkemmail01.nvidia.com>
	<s5h4ouxshq3.wl%tiwai@suse.de>
	<15F501D1A78BD343BE8F4D8DB854566B058A63F3@hkemmail01.nvidia.com>
	<s5hzlco4im2.wl%tiwai@suse.de> <20090605042829.GA14167@localhost>
Mime-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka")
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <alsa-devel-bounces@alsa-project.org>
Received: from mx2.suse.de (cantor2.suse.de [195.135.220.15])
	by alsa0.perex.cz (Postfix) with ESMTP id 1602924580
	for <alsa-devel@alsa-project.org>;
	Fri,  5 Jun 2009 07:41:00 +0200 (CEST)
In-Reply-To: <20090605042829.GA14167@localhost>
List-Unsubscribe: <http://mailman.alsa-project.org/mailman/listinfo/alsa-devel>,
	<mailto:alsa-devel-request@alsa-project.org?subject=unsubscribe>
List-Archive: <http://mailman.alsa-project.org/pipermail/alsa-devel>
List-Post: <mailto:alsa-devel@alsa-project.org>
List-Help: <mailto:alsa-devel-request@alsa-project.org?subject=help>
List-Subscribe: <http://mailman.alsa-project.org/mailman/listinfo/alsa-devel>,
	<mailto:alsa-devel-request@alsa-project.org?subject=subscribe>
Sender: alsa-devel-bounces@alsa-project.org
Errors-To: alsa-devel-bounces@alsa-project.org
To: Wu Fengguang <fengguang.wu@intel.com>
Cc: Peer Chen <pchen@nvidia.com>, Marek Vasut <marek.vasut@gmail.com>, Wei Ni <wni@nvidia.com>, alsa-devel@alsa-project.org, Alan Alan <alanwww1@gmail.com>
List-Id: alsa-devel@alsa-project.org

At Fri, 5 Jun 2009 12:28:29 +0800,
Wu Fengguang wrote:
> 
> On Thu, Jun 04, 2009 at 08:29:25AM +0200, Takashi Iwai wrote:
> > At Thu, 4 Jun 2009 14:05:52 +0800,
> > Wei Ni wrote:
> > > 
> > > Yes, my test wav file is from Windows.
> > > 
> > > I had used different player to test with my test wav file.
> > > The mplayer has no mapping problem, but other players map channels
> > > wrong.
> > > As you said, it seems that is caused by the difference of the ALSA and
> > > Windows.
> > 
> > I guess mplayer corrects the channel mapping automatically.
> > 
> > > Unfortunately, our nvidia codec doesn't support channel-slot assignment
> > > yet.
> > 
> > OK.
> > 
> > > How could we fix this problems, do you have any suggestions?
> > 
> > It's a bit difficult issue right now.  Usually we could "fix" the
> > channel mapping in alsa-lib configuration.  But, HD-audio has currently
> > a single alsa-lib configuration, and others may use the right channel
> > mapping.
> > 
> > I don't remember how is the case of Intel HDMI...  Can anyone check?
> 
> The codecs I tested - G35/G45/GM45 - does not support the channel-slot
> assignment. I guess future hardwares may support that.

OK, and the channel assignment is also FL/FR/C/LFE/RL/RR, right?


thanks,

Takashi