5 #ifndef PIPEWIRE_NODE_H 6 #define PIPEWIRE_NODE_H 30 #define PW_TYPE_INTERFACE_Node PW_TYPE_INFO_INTERFACE_BASE "Node" 32 #define PW_VERSION_NODE 3 54 #define PW_NODE_CHANGE_MASK_INPUT_PORTS (1 << 0) 55 #define PW_NODE_CHANGE_MASK_OUTPUT_PORTS (1 << 1) 56 #define PW_NODE_CHANGE_MASK_STATE (1 << 2) 57 #define PW_NODE_CHANGE_MASK_PROPS (1 << 3) 58 #define PW_NODE_CHANGE_MASK_PARAMS (1 << 4) 59 #define PW_NODE_CHANGE_MASK_ALL ((1 << 5)-1) 81 #define PW_NODE_EVENT_INFO 0 82 #define PW_NODE_EVENT_PARAM 1 83 #define PW_NODE_EVENT_NUM 2 87 #define PW_VERSION_NODE_EVENTS 0 106 void (*
param) (
void *data,
int seq,
107 uint32_t
id, uint32_t index, uint32_t next,
111 #define PW_NODE_METHOD_ADD_LISTENER 0 112 #define PW_NODE_METHOD_SUBSCRIBE_PARAMS 1 113 #define PW_NODE_METHOD_ENUM_PARAMS 2 114 #define PW_NODE_METHOD_SET_PARAM 3 115 #define PW_NODE_METHOD_SEND_COMMAND 4 116 #define PW_NODE_METHOD_NUM 5 120 #define PW_VERSION_NODE_METHODS 0 150 int (*
enum_params) (
void *object,
int seq, uint32_t id,
151 uint32_t start, uint32_t num,
161 int (*
set_param) (
void *object, uint32_t id, uint32_t flags,
172 #define pw_node_method(o,method,version,...) \ 174 int _res = -ENOTSUP; \ 175 spa_interface_call_res((struct spa_interface*)o, \ 176 struct pw_node_methods, _res, \ 177 method, version, ##__VA_ARGS__); \ 182 #define pw_node_add_listener(c,...) pw_node_method(c,add_listener,0,__VA_ARGS__) 183 #define pw_node_subscribe_params(c,...) pw_node_method(c,subscribe_params,0,__VA_ARGS__) 184 #define pw_node_enum_params(c,...) pw_node_method(c,enum_params,0,__VA_ARGS__) 185 #define pw_node_set_param(c,...) pw_node_method(c,set_param,0,__VA_ARGS__) 186 #define pw_node_send_command(c,...) pw_node_method(c,send_command,0,__VA_ARGS__) uint32_t n_params
number of items in params
Definition: src/pipewire/node.h:80
int(* enum_params)(void *object, int seq, uint32_t id, uint32_t start, uint32_t num, const struct spa_pod *filter)
Enumerate node parameters.
Definition: src/pipewire/node.h:174
uint32_t n_input_ports
number of inputs
Definition: src/pipewire/node.h:74
struct spa_param_info * params
parameters
Definition: src/pipewire/node.h:79
A hook, contains the structure with functions and the data passed to the functions.
Definition: hook.h:350
uint32_t max_output_ports
maximum number of outputs
Definition: src/pipewire/node.h:60
struct pw_node_info * pw_node_info_update(struct pw_node_info *info, const struct pw_node_info *update)
Definition: introspect.c:224
const char * pw_node_state_as_string(enum pw_node_state state)
Convert a pw_node_state to a readable string.
Definition: introspect.c:14
uint32_t version
Definition: src/pipewire/node.h:145
struct pw_node_info * pw_node_info_merge(struct pw_node_info *info, const struct pw_node_info *update, bool reset)
Definition: introspect.c:157
enum pw_node_state state
the current state of the node
Definition: src/pipewire/node.h:76
Definition: utils/dict.h:39
the node is running
Definition: src/pipewire/node.h:50
the node is suspended, the device might be closed
Definition: src/pipewire/node.h:46
uint32_t n_output_ports
number of outputs
Definition: src/pipewire/node.h:75
information about a parameter
Definition: param.h:50
int(* subscribe_params)(void *object, uint32_t *ids, uint32_t n_ids)
Subscribe to parameter changes.
Definition: src/pipewire/node.h:160
void(* param)(void *data, int seq, uint32_t id, uint32_t index, uint32_t next, const struct spa_pod *param)
Notify a node param.
Definition: src/pipewire/node.h:123
uint32_t id
id of the global
Definition: src/pipewire/node.h:58
uint32_t max_input_ports
maximum number of inputs
Definition: src/pipewire/node.h:59
uint32_t version
Definition: src/pipewire/node.h:105
pw_node_state
The different node states.
Definition: src/pipewire/node.h:43
the node is being created
Definition: src/pipewire/node.h:45
void pw_node_info_free(struct pw_node_info *info)
Definition: introspect.c:231
int(* add_listener)(void *object, struct spa_hook *listener, const struct pw_node_events *events, void *data)
Definition: src/pipewire/node.h:147
uint64_t change_mask
bitfield of changed fields since last call
Definition: src/pipewire/node.h:73
the node is running but there is no active port
Definition: src/pipewire/node.h:48
void(* info)(void *data, const struct pw_node_info *info)
Notify node info.
Definition: src/pipewire/node.h:111
int(* set_param)(void *object, uint32_t id, uint32_t flags, const struct spa_pod *param)
Set a parameter on the node.
Definition: src/pipewire/node.h:185
Definition: pod/command.h:29
Node methods.
Definition: src/pipewire/node.h:142
error state
Definition: src/pipewire/node.h:44
The node information.
Definition: src/pipewire/node.h:57
int(* send_command)(void *object, const struct spa_command *command)
Send a command to the node.
Definition: src/pipewire/node.h:193
Node events.
Definition: src/pipewire/node.h:102
const char * error
an error reason if state is error
Definition: src/pipewire/node.h:77