PipeWire 1.2.6
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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.