From: Brad Midgley <bmidgley@xmission.com>
To: bluez-devel@lists.sourceforge.net
Subject: Re: [Bluez-devel] btsco and alsa driver interaction
Date: Tue, 08 Mar 2005 19:04:25 -0700 [thread overview]
Message-ID: <422E59A9.2040408@xmission.com> (raw)
In-Reply-To: <d0ktcr$n2i$1@sea.gmane.org>
Luis
It's good to see your interest... I think you have the right ideas on
how things work.
> I also imagine that when we poll data from the hwdep interface, we are
> not polling SCO data type (which I assume it is being drived
> automatically); instead, we are polling for volume-control data type
> which is enigmatically (for me) generated at the core of the driver. Is
> it right?
if the volume change is initiated through a generic mixer, then yes.
Think of a mixer application running on your computer. Run any
alsa-aware mixer and it will let you choose the alsa mixer device to be
the headset.
> The question is, 'when does the following condition evaluate TRUE ?
>
> if (!snd_hwdep_poll_descriptors_revents(handle, &pfds[nfds - 1], 1,
> revents) && revents & POLLIN) {
It evaluates true when there are volume-change events to be examined
that were initiated through a soft mixer.
Brad
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next prev parent reply other threads:[~2005-03-09 2:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-08 19:11 [Bluez-devel] btsco and alsa driver interaction soraberri
2005-03-09 2:04 ` Brad Midgley [this message]
2005-03-09 9:17 ` [Bluez-devel] " soraberri
2005-03-10 8:26 ` suche.org
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