Macros
#define	PW_TYPE_INTERFACE_Node PW_TYPE_INFO_INTERFACE_BASE "Node"

#define	PW_NODE_PERM_MASK PW_PERM_RWXML

#define	PW_VERSION_NODE 3

#define	PW_API_NODE_IMPL static inline

#define	PW_NODE_CHANGE_MASK_INPUT_PORTS (1 << 0)

#define	PW_NODE_CHANGE_MASK_OUTPUT_PORTS (1 << 1)

#define	PW_NODE_CHANGE_MASK_STATE (1 << 2)

#define	PW_NODE_CHANGE_MASK_PROPS (1 << 3)

#define	PW_NODE_CHANGE_MASK_PARAMS (1 << 4)

#define	PW_NODE_CHANGE_MASK_ALL ((1 << 5)-1)

#define	PW_NODE_EVENT_INFO 0

#define	PW_NODE_EVENT_PARAM 1

#define	PW_NODE_EVENT_NUM 2

#define	PW_VERSION_NODE_EVENTS 0

#define	PW_NODE_METHOD_ADD_LISTENER 0

#define	PW_NODE_METHOD_SUBSCRIBE_PARAMS 1

#define	PW_NODE_METHOD_ENUM_PARAMS 2

#define	PW_NODE_METHOD_SET_PARAM 3

#define	PW_NODE_METHOD_SEND_COMMAND 4

#define	PW_NODE_METHOD_NUM 5

#define	PW_VERSION_NODE_METHODS 0

Enumerations
enum	pw_node_state { PW_NODE_STATE_ERROR = -1 , PW_NODE_STATE_CREATING = 0 , PW_NODE_STATE_SUSPENDED = 1 , PW_NODE_STATE_IDLE = 2 , PW_NODE_STATE_RUNNING = 3 }
	The different node states. More...

Functions
const char *	pw_node_state_as_string (enum pw_node_state state)
	Convert a pw_node_state to a readable string.

struct pw_node_info *	pw_node_info_update (struct pw_node_info info, const struct pw_node_info update)

struct pw_node_info *	pw_node_info_merge (struct pw_node_info info, const struct pw_node_info update, bool reset)

void	pw_node_info_free (struct pw_node_info *info)

PW_API_NODE_IMPL int	pw_node_add_listener (struct pw_node object, struct spa_hook listener, const struct pw_node_events events, void data)

PW_API_NODE_IMPL int	pw_node_subscribe_params (struct pw_node object, uint32_t ids, uint32_t n_ids)
	Subscribe to parameter changes.

PW_API_NODE_IMPL int	pw_node_enum_params (struct pw_node object, int seq, uint32_t id, uint32_t start, uint32_t num, const struct spa_pod filter)
	Enumerate node parameters.

PW_API_NODE_IMPL int	pw_node_set_param (struct pw_node object, uint32_t id, uint32_t flags, const struct spa_pod param)
	Set a parameter on the node.

PW_API_NODE_IMPL int	pw_node_send_command (struct pw_node object, const struct spa_command command)
	Send a command to the node.

Detailed Description

Data Structures