A port can be used to link two nodes.  
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| struct pw_impl_port * | pw_context_create_port (struct pw_context *context, enum pw_direction direction, uint32_t port_id, const struct spa_port_info *info, size_t user_data_size) | 
|  | Create a new port. 
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| enum pw_direction | pw_impl_port_get_direction (struct pw_impl_port *port) | 
|  | Get the port direction. 
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| const struct pw_properties * | pw_impl_port_get_properties (struct pw_impl_port *port) | 
|  | Get the port properties. 
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| int | pw_impl_port_update_properties (struct pw_impl_port *port, const struct spa_dict *dict) | 
|  | Update the port properties. 
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| const struct pw_port_info * | pw_impl_port_get_info (struct pw_impl_port *port) | 
|  | Get the port info. 
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| uint32_t | pw_impl_port_get_id (struct pw_impl_port *port) | 
|  | Get the port id. 
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| const char * | pw_impl_port_state_as_string (enum pw_impl_port_state state) | 
|  | Get the port state as a string. 
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| struct pw_impl_node * | pw_impl_port_get_node (struct pw_impl_port *port) | 
|  | Get the port parent node or NULL when not yet set. 
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| int | pw_impl_port_is_linked (struct pw_impl_port *port) | 
|  | check is a port has links, return 0 if not, 1 if it is linked 
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| int | pw_impl_port_add (struct pw_impl_port *port, struct pw_impl_node *node) | 
|  | Add a port to a node. 
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| void | pw_impl_port_add_listener (struct pw_impl_port *port, struct spa_hook *listener, const struct pw_impl_port_events *events, void *data) | 
|  | Add an event listener on the port. 
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A port can be used to link two nodes. 
◆ pw_impl_port_state
| Enumerator | 
|---|
| PW_IMPL_PORT_STATE_ERROR | the port is in error  | 
| PW_IMPL_PORT_STATE_INIT | the port is being created  | 
| PW_IMPL_PORT_STATE_CONFIGURE | the port is ready for format negotiation  | 
| PW_IMPL_PORT_STATE_READY | the port is ready for buffer allocation  | 
| PW_IMPL_PORT_STATE_PAUSED | the port is paused  | 
 
 
◆ PW_VERSION_IMPL_PORT_EVENTS
      
        
          | #define PW_VERSION_IMPL_PORT_EVENTS   3 | 
      
 
 
◆ pw_context_create_port()
Create a new port. 
- Returns
- a newly allocated port 
 
 
◆ pw_impl_port_get_direction()
◆ pw_impl_port_get_properties()
◆ pw_impl_port_update_properties()
Update the port properties. 
 
 
◆ pw_impl_port_get_info()
◆ pw_impl_port_get_id()
◆ pw_impl_port_state_as_string()
Get the port state as a string. 
 
 
◆ pw_impl_port_get_node()
Get the port parent node or NULL when not yet set. 
 
 
◆ pw_impl_port_is_linked()
check is a port has links, return 0 if not, 1 if it is linked 
 
 
◆ pw_impl_port_add()
◆ pw_impl_port_add_listener()
Add an event listener on the port.