[alsa-devel] [PATCH 2/4] test: use proper threshold level information for user-ctl-element-set test

[Takashi Sakamoto]

On 2016年09月20日 05:48, Takashi Iwai wrote:
> On Sat, 17 Sep 2016 16:49:26 +0200,
> Takashi Sakamoto wrote:
>>
>> Currently, this test program uses invalid array for threshold level
>> information.
> 
> What do you mean exactly here as "threshold level"?
> This term is fairly unclear to me and I don't remember of it being
> defined properly although you seem to have started using in some
> comments.

Aha. Now I got it.

I interpreted 'TLV' as 'Threshold LeVel', and it's completely my
misreading. Actually, TLV is mainly used to describe the relationship
between Linear/dB representation, However, in a design of ALSA control
interface, 'TLV' means a data structure with Type/Length/Value. So this
line expect the TLV packet is larger than two members for the T and the L.
http://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/core/control.c?h=v4.8-rc6#n1440

I have scarcely realized my mistakes. I'll revise this patchset with a
new one to update control interface description...


Thanks!

Takashi Sakamoto