Re: [PATCH] Adds dB gain to alsa-driver, alsa-lib.

[Lee Revell <rlrevell@joe-job.com>]

On Thu, 2005-12-15 at 18:34 +0000, James Courtier-Dutton wrote:
> Hi,
> 
> I have implemented dB gain reporting for ALSA mixer controls.
> By applying the attached patches to alsa-driver and alsa-lib, one will 
> then see dB values appear in alsamixer. (I added support to alsamixer a 
> long time ago)
> 
> Currently, only the snd-ca0106 sound card reports the values.
> 
> If the method is agreed upon, I will extend it to many more sound cards.

Can you briefly explain the process for adding this feature to an
existing driver (IOW say you have no docs just a vendor-obfuscated or
RE'd driver, how do you determine db_scale)?

Lee



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