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Date: Sat, 14 Jan 2012 14:17:10 -0800
From: Doug Barton <dougb@FreeBSD.org>
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Cc: freebsd-multimedia@freebsd.org, Alexander Motin <mav@freebsd.org>,
	FreeBSD current <freebsd-current@freebsd.org>
Subject: Re: [RFT] Major snd_hda rewrite
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On 01/14/2012 13:25, Steve Kargl wrote:
> Remove dvd insert music cd in drive, 'cdcontrol play'.  The
> drive is reading the cd and 'cdcontrol status' indicates
> that it is playing.  No sound.

The way that this was explained to me (and I'm certainly no expert) is
that in the ATA-CAM world the only way the access method used by
cdcontrol will be able to play the music is if there is a direct (wired)
connection from the cd player to the sound card, like we had back in the
80's. :)  Other tools (such as vlc, mplayer, etc.) use the cdda://
method of access, which does not rely on the wire.

(As I understand it) this also explains why dvds work, but cds don't.


hth,

Doug

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