pw_core_methods Struct Reference

Core methods. More...

Data Fields
uint32_t	version
int(*	add_listener )(void *object, struct spa_hook *listener, const struct pw_core_events *events, void *data)
int(*	hello )(void *object, uint32_t version)
	Start a conversation with the server. More...
int(*	sync )(void *object, uint32_t id, int seq)
	Do server roundtrip. More...
int(*	pong )(void *object, uint32_t id, int seq)
	Reply to a server ping event. More...
int(*	error )(void *object, uint32_t id, int seq, int res, const char *message)
	Fatal error event. More...
struct pw_registry *(*	get_registry )(void *object, uint32_t version, size_t user_data_size)
	Get the registry object. More...
void *(*	create_object )(void *object, const char *factory_name, const char *type, uint32_t version, const struct spa_dict *props, size_t user_data_size)
	Create a new object on the PipeWire server from a factory. More...
int(*	destroy )(void *object, void *proxy)
	Destroy an resource. More...

Detailed Description

Core methods.

The core global object. This is a singleton object used for creating new objects in the remote PipeWire instance. It is also used for internal features.

Field Documentation

version

uint32_t pw_core_methods::version

add_listener

int(* pw_core_methods::add_listener) (void *object, struct spa_hook *listener, const struct pw_core_events *events, void *data)

hello

int(* pw_core_methods::hello) (void *object, uint32_t version)

Start a conversation with the server.

This will send the core info and will destroy all resources for the client (except the core and client resource).

sync

int(* pw_core_methods::sync) (void *object, uint32_t id, int seq)

Do server roundtrip.

Ask the server to emit the 'done' event with seq.

Since methods are handled in-order and events are delivered in-order, this can be used as a barrier to ensure all previous methods and the resulting events have been handled.

Parameters

seq	the seq number passed to the done event

pong

int(* pw_core_methods::pong) (void *object, uint32_t id, int seq)

Reply to a server ping event.

Reply to the server ping event with the same seq.

Parameters

seq	the seq number received in the ping event

error

int(* pw_core_methods::error) (void *object, uint32_t id, int seq, int res, const char *message)

Fatal error event.

The error method is sent out when a fatal (non-recoverable) error has occurred. The id argument is the proxy object where the error occurred, most often in response to an event on that object. The message is a brief description of the error, for (debugging) convenience.

This method is usually also emitted on the resource object with id.

Parameters

id	object where the error occurred
res	error code
message	error description

get_registry

struct pw_registry*(* pw_core_methods::get_registry) (void *object, uint32_t version, size_t user_data_size)

Get the registry object.

Create a registry object that allows the client to list and bind the global objects available from the PipeWire server

Parameters

version	the client version
user_data_size	extra size

create_object

void*(* pw_core_methods::create_object) (void *object, const char *factory_name, const char *type, uint32_t version, const struct spa_dict *props, size_t user_data_size)

Create a new object on the PipeWire server from a factory.

Parameters

factory_name	the factory name to use
type	the interface to bind to
version	the version of the interface
props	extra properties
user_data_size	extra size

destroy

int(* pw_core_methods::destroy) (void *object, void *proxy)

Destroy an resource.

Destroy the server resource for the given proxy.

Parameters

obj	the proxy to destroy

---

The documentation for this struct was generated from the following file:

• pipewire/core.h