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ucm: add support for multiple control devices, more aggresive caching

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Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2019-11-04 14:42:45 +01:00
parent be6deb927f
commit 32ff0ba7a3
4 changed files with 212 additions and 50 deletions
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23
src/ucm/ucm_local.h
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@ -105,6 +105,18 @@ struct dev_list {
struct list_head list;
};
struct ctl_dev {
struct list_head list;
char *device;
};
struct ctl_list {
struct list_head list;
struct list_head dev_list;
char *ctl_id;
snd_ctl_t *ctl;
};
/*
* Describes a Use Case Modifier and it's enable and disable sequences.
* A use case verb can have N modifiers.
@ -214,9 +226,8 @@ struct snd_use_case_mgr {
/* locking */
pthread_mutex_t mutex;
/* change to list of ctl handles */
snd_ctl_t *ctl;
char *ctl_dev;
/* list of opened control devices */
struct list_head ctl_list;
/* Components don't define cdev, the card device. When executing
* a sequence of a component device, ucm manager enters component
@ -247,6 +258,12 @@ void uc_mgr_free_transition_element(struct transition_sequence *seq);
void uc_mgr_free_verb(snd_use_case_mgr_t *uc_mgr);
void uc_mgr_free(snd_use_case_mgr_t *uc_mgr);
int uc_mgr_open_ctl(snd_use_case_mgr_t *uc_mgr,
snd_ctl_t **ctl,
const char *device);
void uc_mgr_free_ctl_list(snd_use_case_mgr_t *uc_mgr);
/** The name of the environment variable containing the UCM directory */
#define ALSA_CONFIG_UCM_VAR "ALSA_CONFIG_UCM"