30#define PW_TYPE_INTERFACE_Port PW_TYPE_INFO_INTERFACE_BASE "Port"
32#define PW_PORT_PERM_MASK PW_PERM_R|PW_PERM_X|PW_PERM_M
34#define PW_VERSION_PORT 3
38#define pw_direction spa_direction
39#define PW_DIRECTION_INPUT SPA_DIRECTION_INPUT
40#define PW_DIRECTION_OUTPUT SPA_DIRECTION_OUTPUT
48#define PW_PORT_CHANGE_MASK_PROPS (1 << 0)
49#define PW_PORT_CHANGE_MASK_PARAMS (1 << 1)
50#define PW_PORT_CHANGE_MASK_ALL ((1 << 2)-1)
68#define PW_PORT_EVENT_INFO 0
69#define PW_PORT_EVENT_PARAM 1
70#define PW_PORT_EVENT_NUM 2
74#define PW_VERSION_PORT_EVENTS 0
93 void (*param) (
void *data,
int seq,
94 uint32_t id, uint32_t index, uint32_t next,
98#define PW_PORT_METHOD_ADD_LISTENER 0
99#define PW_PORT_METHOD_SUBSCRIBE_PARAMS 1
100#define PW_PORT_METHOD_ENUM_PARAMS 2
101#define PW_PORT_METHOD_NUM 3
105#define PW_VERSION_PORT_METHODS 0
140 uint32_t id, uint32_t start, uint32_t num,
144#define pw_port_method(o,method,version,...) \
146 int _res = -ENOTSUP; \
147 spa_interface_call_res((struct spa_interface*)o, \
148 struct pw_port_methods, _res, \
149 method, version, ##__VA_ARGS__); \
153#define pw_port_add_listener(c,...) pw_port_method(c,add_listener,0,__VA_ARGS__)
154#define pw_port_subscribe_params(c,...) pw_port_method(c,subscribe_params,0,__VA_ARGS__)
155#define pw_port_enum_params(c,...) pw_port_method(c,enum_params,0,__VA_ARGS__)
const char * pw_direction_as_string(enum pw_direction direction)
Convert a pw_direction to a readable string.
Definition introspect.c:33
void pw_port_info_free(struct pw_port_info *info)
Definition introspect.c:307
struct pw_port_info * pw_port_info_update(struct pw_port_info *info, const struct pw_port_info *update)
Definition introspect.c:300
#define pw_direction
The direction of a port.
Definition port.h:46
struct pw_port_info * pw_port_info_merge(struct pw_port_info *info, const struct pw_port_info *update, bool reset)
Definition introspect.c:243
Port events.
Definition port.h:89
void(* info)(void *data, const struct pw_port_info *info)
Notify port info.
Definition port.h:98
uint32_t version
Definition port.h:92
void(* param)(void *data, int seq, uint32_t id, uint32_t index, uint32_t next, const struct spa_pod *param)
Notify a port param.
Definition port.h:110
uint32_t n_params
number of items in params
Definition port.h:67
struct spa_param_info * params
parameters
Definition port.h:66
uint64_t change_mask
bitfield of changed fields since last call
Definition port.h:64
uint32_t id
id of the global
Definition port.h:56
enum pw_direction direction
port direction
Definition port.h:57
Port methods.
Definition port.h:125
int(* subscribe_params)(void *object, uint32_t *ids, uint32_t n_ids)
Subscribe to parameter changes.
Definition port.h:145
uint32_t version
Definition port.h:128
int(* enum_params)(void *object, int seq, uint32_t id, uint32_t start, uint32_t num, const struct spa_pod *filter)
Enumerate port parameters.
Definition port.h:161
int(* add_listener)(void *object, struct spa_hook *listener, const struct pw_port_events *events, void *data)
Definition port.h:130
A hook, contains the structure with functions and the data passed to the functions.
Definition hook.h:350
information about a parameter
Definition param.h:51