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dbus: add events to the dbus connection

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Add events to the dbus connection and notify about destroy and
disconnect.
This commit is contained in:
Wim Taymans 2021-05-17 11:54:43 +02:00
parent b6d803daa4
commit 2dcdabd2af
2 changed files with 67 additions and 4 deletions
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46
spa/include/spa/support/dbus.h
View file

@ -42,8 +42,23 @@ enum spa_dbus_type {
SPA_DBUS_TYPE_STARTER /**< The bus that started us, if any */
};
#define SPA_DBUS_CONNECTION_EVENT_DESTROY 0
#define SPA_DBUS_CONNECTION_EVENT_DISCONNECTED 1
#define SPA_DBUS_CONNECTION_EVENT_NUM 2
struct spa_dbus_connection_events {
#define SPA_VERSION_DBUS_CONNECTION_EVENTS 0
uint32_t version;
/* a connection is destroyed */
void (*destroy) (void *data);
/* a connection disconnected */
void (*disconnected) (void *data);
};
struct spa_dbus_connection {
#define SPA_VERSION_DBUS_CONNECTION 0
#define SPA_VERSION_DBUS_CONNECTION 1
uint32_t version;
/**
* Get the DBusConnection from a wrapper
@ -58,10 +73,35 @@ struct spa_dbus_connection {
* \param conn the wrapper to destroy
*/
void (*destroy) (struct spa_dbus_connection *conn);
/**
* Add a listener for events
*
* Since version 1
*/
void (*add_listener) (struct spa_dbus_connection *conn,
struct spa_hook *listener,
const struct spa_dbus_connection_events *events,
void *data);
};
#define spa_dbus_connection_get(c) (c)->get((c))
#define spa_dbus_connection_destroy(c) (c)->destroy((c))
#define spa_dbus_connection_call(c,method,vers,...) \
({ \
if (SPA_LIKELY(SPA_CALLBACK_CHECK(c,method,vers))) \
c->method((c), ## __VA_ARGS__); \
})
#define spa_dbus_connection_call_vp(c,method,vers,...) \
({ \
void *_res = NULL; \
if (SPA_LIKELY(SPA_CALLBACK_CHECK(c,method,vers))) \
_res = c->method((c), ## __VA_ARGS__); \
_res; \
})
#define spa_dbus_connection_get(c) spa_dbus_connection_call_vp(c,get,0)
#define spa_dbus_connection_destroy(c) spa_dbus_connection_call(c,destroy,0)
#define spa_dbus_connection_add_listener(c,...) spa_dbus_connection_call(c,add_listener,1,__VA_ARGS__)
struct spa_dbus_methods {
#define SPA_VERSION_DBUS_METHODS 0