Metadata interface
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| #define | PW_TYPE_INTERFACE_Metadata PW_TYPE_INFO_INTERFACE_BASE "Metadata" |
| |
| #define | PW_METADATA_PERM_MASK PW_PERM_RWX |
| |
| #define | PW_VERSION_METADATA 3 |
| |
| #define | PW_EXTENSION_MODULE_METADATA PIPEWIRE_MODULE_PREFIX "module-metadata" |
| |
| #define | PW_METADATA_EVENT_PROPERTY 0 |
| |
| #define | PW_METADATA_EVENT_NUM 1 |
| |
| #define | PW_VERSION_METADATA_EVENTS 0 |
| |
| #define | PW_METADATA_METHOD_ADD_LISTENER 0 |
| |
| #define | PW_METADATA_METHOD_SET_PROPERTY 1 |
| |
| #define | PW_METADATA_METHOD_CLEAR 2 |
| |
| #define | PW_METADATA_METHOD_NUM 3 |
| |
| #define | PW_VERSION_METADATA_METHODS 0 |
| |
| #define | pw_metadata_method(o, method, version, ...) |
| |
| #define | pw_metadata_add_listener(c, ...) pw_metadata_method(c,add_listener,0,__VA_ARGS__) |
| |
| #define | pw_metadata_set_property(c, ...) pw_metadata_method(c,set_property,0,__VA_ARGS__) |
| | Set a metadata property.
|
| |
| #define | pw_metadata_clear(c) pw_metadata_method(c,clear,0) |
| | Clear all metadata.
|
| |
| #define | PW_KEY_METADATA_NAME "metadata.name" |
| |
| #define | PW_KEY_METADATA_VALUES "metadata.values" |
| |
Metadata interface
◆ PW_TYPE_INTERFACE_Metadata
◆ PW_METADATA_PERM_MASK
◆ PW_VERSION_METADATA
| #define PW_VERSION_METADATA 3 |
◆ PW_EXTENSION_MODULE_METADATA
◆ PW_METADATA_EVENT_PROPERTY
| #define PW_METADATA_EVENT_PROPERTY 0 |
◆ PW_METADATA_EVENT_NUM
| #define PW_METADATA_EVENT_NUM 1 |
◆ PW_VERSION_METADATA_EVENTS
| #define PW_VERSION_METADATA_EVENTS 0 |
◆ PW_METADATA_METHOD_ADD_LISTENER
| #define PW_METADATA_METHOD_ADD_LISTENER 0 |
◆ PW_METADATA_METHOD_SET_PROPERTY
| #define PW_METADATA_METHOD_SET_PROPERTY 1 |
◆ PW_METADATA_METHOD_CLEAR
| #define PW_METADATA_METHOD_CLEAR 2 |
◆ PW_METADATA_METHOD_NUM
| #define PW_METADATA_METHOD_NUM 3 |
◆ PW_VERSION_METADATA_METHODS
| #define PW_VERSION_METADATA_METHODS 0 |
◆ pw_metadata_method
| #define pw_metadata_method |
( |
| o, |
|
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| method, |
|
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| version, |
|
|
| ... ) |
◆ pw_metadata_add_listener
| #define pw_metadata_add_listener |
( |
| c, |
|
|
| ... ) pw_metadata_method(c,add_listener,0,__VA_ARGS__) |
◆ pw_metadata_set_property
| #define pw_metadata_set_property |
( |
| c, |
|
|
| ... ) pw_metadata_method(c,set_property,0,__VA_ARGS__) |
Set a metadata property.
Automatically emit property events for the subject and key when they are changed.
- Parameters
-
| subject | the id of the global to associate the metadata with. |
| key | the key of the metadata, NULL clears all metadata for the subject. |
| type | the type of the metadata, this can be blank |
| value | the metadata value. NULL clears the metadata. |
This requires X and W permissions on the metadata. It also requires M permissions on the subject global.
- See also
- pw_metadata_methods.set_property
◆ pw_metadata_clear
◆ PW_KEY_METADATA_NAME
| #define PW_KEY_METADATA_NAME "metadata.name" |
◆ PW_KEY_METADATA_VALUES
| #define PW_KEY_METADATA_VALUES "metadata.values" |