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ucm: add support for verb variants

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The bellow configuration example creates two verbs ("HiFi" and "HiFi 7+1")
with different playback channels for the "Speaker" device.

	SectionUseCase."HiFi" {
	        File "HiFi.conf"
       		Variant."HiFi" {
			Comment "Default"
		}
		Variant."HiFi 7+1" {
			Comment "HiFi 7.1"
        	}
	}

	SectionDevice."Speaker" {
		Value {
			PlaybackChannels 2
		}
		Variant."HiFi 7+1".Value {
			PlaybackChannels 8
		}
	}

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2022-05-18 13:10:35 +02:00
parent 25e44bbeb9
commit c3a5d32ac3
2 changed files with 189 additions and 20 deletions
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2
src/ucm/ucm_local.h
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@ -228,6 +228,8 @@ struct snd_use_case_mgr {
int conf_format;
unsigned int ucm_card_number;
int suppress_nodev_errors;
const char *parse_variant;
int parse_master_section;
/* UCM cards list */
struct list_head cards_list;