| PipeWire 1.4.7
    | 
Port methods. More...
#include <pipewire/port.h>
| Data Fields | |
| uint32_t | version | 
| int(* | add_listener )(void *object, struct spa_hook *listener, const struct pw_port_events *events, void *data) | 
| int(* | subscribe_params )(void *object, uint32_t *ids, uint32_t n_ids) | 
| Subscribe to parameter changes. | |
| int(* | enum_params )(void *object, int seq, uint32_t id, uint32_t start, uint32_t num, const struct spa_pod *filter) | 
| Enumerate port parameters. | |
Port methods.
| uint32_t pw_port_methods::version | 
| int(* pw_port_methods::add_listener) (void *object, struct spa_hook *listener, const struct pw_port_events *events, void *data) | 
| int(* pw_port_methods::subscribe_params) (void *object, uint32_t *ids, uint32_t n_ids) | 
Subscribe to parameter changes.
Automatically emit param events for the given ids when they are changed.
| ids | an array of param ids | 
| n_ids | the number of ids in ids | 
This requires X permissions on the port.
| int(* pw_port_methods::enum_params) (void *object, int seq, uint32_t id, uint32_t start, uint32_t num, const struct spa_pod *filter) | 
Enumerate port parameters.
Start enumeration of port parameters. For each param, a param event will be emitted.
| seq | a sequence number returned in the reply | 
| id | the parameter id to enumerate | 
| start | the start index or 0 for the first param | 
| num | the maximum number of params to retrieve | 
| filter | a param filter or NULL | 
This requires X permissions on the port.