[alsa-devel] How can you tell if the speaker jack on your sound card has anything plugged into it???

[Sean Thayne]

How do you think Vista does it? I've used a couple of different 
computers (totally different hardware) and it can detect insertion for 
them all...

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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>   

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Sean Thayne
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