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context: add metadata implementation

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Add a simple metadata implementation to the core that clients can
use to manage metadata or export.
This commit is contained in:
Wim Taymans 2021-06-16 10:50:54 +02:00
parent d8ad87fd09
commit 80ef77f994
6 changed files with 715 additions and 0 deletions
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24
src/pipewire/private.h
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@ -241,6 +241,29 @@ struct pw_impl_core {
unsigned int registered:1;
};
#define pw_impl_metadata_emit(s,m,v,...) spa_hook_list_call(&s->listener_list, struct pw_impl_metadata_events, m, v, ##__VA_ARGS__)
#define pw_impl_metadata_emit_destroy(s) pw_impl_metadata_emit(s, destroy, 0)
#define pw_impl_metadata_emit_free(s) pw_impl_metadata_emit(s, free, 0)
#define pw_impl_metadata_emit_property(s, ...) pw_impl_metadata_emit(s, property, 0, __VA_ARGS__)
struct pw_impl_metadata {
struct pw_context *context; /**< the context */
struct spa_list link; /**< link in context metadata_list */
struct pw_global *global; /**< global for this metadata */
struct spa_hook global_listener;
struct pw_properties *properties; /**< properties of the metadata */
struct pw_metadata *metadata;
struct spa_hook metadata_listener;
struct spa_hook_list listener_list; /**< event listeners */
void *user_data;
unsigned int registered:1;
};
struct pw_impl_client {
struct pw_impl_core *core; /**< core object */
struct pw_context *context; /**< context object */
@ -401,6 +424,7 @@ struct pw_context {
struct spa_list client_list; /**< list of clients */
struct spa_list node_list; /**< list of nodes */
struct spa_list factory_list; /**< list of factories */
struct spa_list metadata_list; /**< list of metadata */
struct spa_list link_list; /**< list of links */
struct spa_list control_list[2]; /**< list of controls, indexed by direction */
struct spa_list export_list; /**< list of export types */