From: Takashi Iwai <tiwai@suse.de>
To: Clemens Ladisch <clemens@ladisch.de>
Cc: Kallol Biswas <nucleodyne@gmail.com>,
Lee Revell <rlrevell@joe-job.com>,
linux-kernel@vger.kernel.org,
Xiaogeng Jin <xiaogeng.jin@yahoo.com>
Subject: Re: HDMI Audio Support in ALSA
Date: Mon, 26 May 2008 12:56:42 +0200 [thread overview]
Message-ID: <s5hhccltjth.wl%tiwai@suse.de> (raw)
In-Reply-To: <483A63BF.1050805@ladisch.de>
At Mon, 26 May 2008 09:16:15 +0200,
Clemens Ladisch wrote:
>
> Kallol Biswas wrote:
> > The routine snd_hda_calc_stream_format() calls snd_pcm_format_width()
> > to find if the format is supported and the width.
> >
> > The array holds pcm_format[] holds all the supported formats. However,
> > in this array
> > there is no entry for IEC 60958 or IEC 61937.
>
> There is. I already told you that these formats use
> SNDRV_PCM_FORMAT_S16_LE.
Yes. The apps usually sends the raw data as S16_LE to the driver.
In addition, we have status bits controls. These are stored into a
control element, and thus independently handled from the raw data.
With SNDRV_PCM_FORMAT_IEC958_SUBFRAME format, both the raw and the
status bits are composed together. But, which format is supported
depends purely on the driver.
Takashi
prev parent reply other threads:[~2008-05-26 10:56 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-19 16:04 HDMI Audio Support in ALSA Kallol Biswas
2008-05-19 16:16 ` Lee Revell
2008-05-19 16:38 ` Kallol Biswas
2008-05-20 8:10 ` Clemens Ladisch
[not found] ` <438397970805211252u1d228ad8wcb1a6ef9b1251478@mail.gmail.com>
2008-05-22 12:36 ` Clemens Ladisch
2008-05-23 11:05 ` Takashi Iwai
2008-05-25 4:41 ` Kallol Biswas
2008-05-26 7:16 ` Clemens Ladisch
2008-05-26 10:56 ` Takashi Iwai [this message]
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