[alsa-devel] [PATCH] Add support for gain in softvol plugin

[Steve Longerbeam]

Steve Longerbeam wrote:
> Takashi Iwai wrote:
>   
>> At Thu, 10 May 2007 12:57:10 -0700,
>> Steve Longerbeam wrote:
>>   
>>     
>>> Hi Takashi,
>>>
>>> Thanks, that's much better. I tried doing that myself a while ago, but I 
>>> must have been doing something wrong because the capture device wasn't 
>>> being recognized. But your version works.
>>>
>>> Version 4 of the patch is attached. It's much better, only two modified 
>>> files: pcm_softvol.c and HDA-Intel.conf.
>>>
>>> I also reduced the gain range, it's now -30 to +30 dB.
>>>     
>>>       
>> I'm afraid that this choice would be bad for the current TLV
>> representation.  The default resolution is 256, so -30/30 dB range
>> doesn't match to this resolution.  We should change either resolution
>> (e.g. 120, corresponding to 0.5dB step), or the range.
>>   
>>     
>
> ok, that's no problem. How about we change the range to (in HDA-Intel.conf):
>
> min_dB: -21.0
> max_dB: 30.0
>
>
>   

Hi Takashi, should I send another patch with this change?

Steve

>> Otherwise it looks fine to me.
>>
>>
>> Thanks,
>>
>> Takashi
>>
>>   
>>     
>
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