[alsa-devel] [PATCH v2 1/2] ALSA: jack: create jack kcontrols for every jack input device

[David Henningsson]

On 2015-03-26 13:43, Jie, Yang wrote:
>
> Sorry, Correct a typo(removing line "create "Mic Jack" kctl;" in default case)

It looks like your code can be simplified as:

switch (type | SND_JACK_HEADSET) {
	case SND_JACK_HEADSET:
		create "Headset Mic Jack" kctl;
		/* fall through */
	case SND_JACK_MICROPHONE:
	case SND_JACK_HEADPHONE:
		create format("%s Jack", id) kctl;
}

...that way, prefixes such as "Front Headphone Jack" are preserved too, 
which is a good thing.

// David

>
> snd_jack_new(struct snd_card *card, const char *id, int type, struct snd_jack **jjack) { ...
> 	Switch(type | SND_JACK_HEADSET)
> 	{
> 		case SND_JACK_MICROPHONE:
> 			create "Mic Jack" kctl;
> 			break;
> 		case SND_JACK_HEADSET:
> 			if (id == "Headphone Mic Headset") {
> 				create " Headphone Mic Jack " kctl;
> 				create " Headset Mic Jack " kctl;
> 			} else {
> 				create " Headphone Jack " kctl;
> 				create " Headset Mic Jack " kctl;
> 			}
> 			break;
> 		case SND_JACK_HEADPHONE:
> 			if (id == "Headset Mic") {
> 				create " Headphone Jack " kctl;
> 			//	create " Headset Mic Phantom Jack " kctl;
> 			} else if (id == "Headphone Mic")  {
> 				create " Headphone Mic Jack " kctl;
> 			} else if (id == "Headset Headphone Mic")  {
> 				create " Headphone Mic Jack " kctl;
> 			//	create " Headset Mic Phantom Jack " kctl;
> 			} else {
> 				create " Headphone Jack " kctl;
> 			}
> 			break;
> 		default:
> 			break;
> 	}
> ...
> }
>
>
> Jack Type			Jack name			kctls/switches name
> SND_JACK_HEADPHONE	Headphone			Headphone Jack
> SND_JACK_MICROPHONE	Mic				Mic Jack
> SND_JACK_HEADSET		Headset			Headphone Jack
> 								Headset Mic Jack
> SND_JACK_HEADPHONE	Headset Mic			Headphone Jack
> 								Headset Mic Phantom Jack
> SND_JACK_HEADPHONE 	Headphone Mic		Headphone Mic Jack
> SND_JACK_HEADPHONE 	Headset Headphone Mic	Headphone Mic Jack
> 								Headset Mic Phantom Jack
> SND_JACK_HEADSET 		Headphone Mic Headset	Headphone Mic Jack
> 								Headset Mic Jack
>
> ~Keyon
>

-- 
David Henningsson, Canonical Ltd.
https://launchpad.net/~diwic