[alsa-devel] How can you tell if the speaker jack on your sound card has anything plugged into it???
sthayne at summitmediagroupllc.com
Fri Apr 25 23:02:09 CEST 2008
How do you think Vista does it? I've used a couple of different
computers (totally different hardware) and it can detect insertion for
Timur Tabi wrote:
> Sean Thayne wrote:
>> How would one go about getting this info? I'm trying to create a
>> monitoring tool for a specific sound card, so the driver's standardized...
> First, the hardware has to detect insertion. Then, it has to send a
> signal to the driver (either via a status register or an interrupt).
> Assuming you have all that (I've never seen a sound card that provides
> this info), perhaps you can specify the output jack only when something
> is plugged in? That is, you register the output jack when something is
> plugged in, and then deregister it when something is removed.
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> Alsa-devel at alsa-project.org
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