[alsa-devel] ALSA Mixer issue

[sudarshan bisht]

Thanks Jaroslav ,

It works for me !!!


On Fri, Jul 30, 2010 at 5:36 PM, sudarshan bisht
<bisht.sudarshan at gmail.com>wrote:

> Thanks for the reply , I will try the same soon .
>
> On Fri, Jul 30, 2010 at 7:00 PM, Jaroslav Kysela <perex at perex.cz> wrote:
>
>>  On Fri, 30 Jul 2010, sudarshan bisht wrote:
>>
>> Hi ,
>>>
>>> I wanted to know that can we use multiple handlers for the same ALSA
>>> mixer ?
>>>
>>> My use case is something like this .
>>>
>>> I have two modules and having two different handlers for ALSA mixer.
>>>  First
>>> module does some volume change , and I try to read the latest volume
>>> using
>>> my second handler ( of first second module) .
>>>
>>> But I am not getting the most recent value in second handler ( the volume
>>> set by the first module )  so I feel there is some inconsistency when I
>>> use
>>> two handlers from two different modules in order to fetch volume
>>> information
>>> from the ALSA mixer.
>>>
>>
>> You must sync the cached information using poll() or select() on file
>> descriptors returned by snd_mixer_poll_descriptors_*() functions and call
>> snd_mixer_handle_events() if any events are waiting.
>>
>>                                        Jaroslav
>>
>> -----
>> Jaroslav Kysela <perex at perex.cz>
>> Linux Kernel Sound Maintainer
>> ALSA Project, Red Hat, Inc.
>>
>>
>
>
> --
> Regards,
>
> Sudarshan Bisht
>



-- 
Regards,

Sudarshan Bisht