linux-kernel - Supporting both PCM and HDMI audio

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <c058f1520806282252o789ea328kc7cb061a1d29478@mail.gmail.com>
Date:	Sat, 28 Jun 2008 22:52:10 -0700
From:	"X Jin" <jinx080808@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Supporting both PCM and HDMI audio

Hi,

I have a video/audio capture card with both PCM analog audio and HDMI
inputs. I've done some homework on the ALSA framework and have some
idea how to capture the analog audio. Basically it's to define a
capture substream in PCM interface. However I'm a little lost on how
to capture HDMI audio under ALSA.

The sound/pci/hda directory has the support of Intel high definition
audio codec. I think this is nothing to do with HDMI audio. Right?

>From some old conversations regarding to similar issues in this
mailing list such as this (http://lkml.org/lkml/2008/5/22/170), my
impression is that HDMI audio is just a different format (typically
SNDRV_PCM_FORMAT_S16). It's still the PCM interface that captures the
audio. Is my understanding right?

I really need some direction/advice on this.

TIA.
-XJ.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/