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acp: add volume base and step

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Add a READONLY property flag to makr properties READONLY
Set the base_volume and volume_step in the acp device
Send the base volume and step as REAONLY properties. Use these
in pulse layer.
This commit is contained in:
Wim Taymans 2020-07-07 13:12:57 +02:00
parent f75dfde89c
commit e030445e49
8 changed files with 40 additions and 11 deletions
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3
spa/include/spa/pod/pod.h
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@ -194,7 +194,8 @@ struct spa_pod_fd {
struct spa_pod_prop {
uint32_t key; /**< key of property, list of valid keys depends on the
* object type */
#define SPA_POD_PROP_FLAG_HARDWARE (1u<<0) /**< property for some sort of hardware parameter */
#define SPA_POD_PROP_FLAG_READONLY (1u<<0) /**< is read-only */
#define SPA_POD_PROP_FLAG_HARDWARE (1u<<1) /**< some sort of hardware parameter */
uint32_t flags; /**< flags for property */
struct spa_pod value;
/* value follows */