PipeWire 0.2.6

node.h
Go to the documentation of this file.
1 /* PipeWire
2 * Copyright (C) 2015 Wim Taymans <wim.taymans@gmail.com>
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20 #ifndef __PIPEWIRE_NODE_H__
21 #define __PIPEWIRE_NODE_H__
22
23 #ifdef __cplusplus
24 extern "C" {
25 #endif
26
27 #define PW_TYPE__Node PW_TYPE_OBJECT_BASE "Node"
28 #define PW_TYPE_NODE_BASE PW_TYPE__Node ":"
29
42 struct pw_node;
43
44 #include <pipewire/core.h>
45 #include <pipewire/global.h>
46 #include <pipewire/introspect.h>
47 #include <pipewire/port.h>
48 #include <pipewire/resource.h>
49
51 struct pw_node_events {
52 #define PW_VERSION_NODE_EVENTS 0
53 uint32_t version;
54
56 void (*destroy) (void *data);
58 void (*free) (void *data);
60 void (*initialized) (void *data);
61
63 void (*port_added) (void *data, struct pw_port *port);
65 void (*port_removed) (void *data, struct pw_port *port);
66
68 void (*info_changed) (void *data, struct pw_node_info *info);
70 void (*active_changed) (void *data, bool active);
72 void (*enabled_changed) (void *data, bool enabled);
73
75 void (*state_request) (void *data, enum pw_node_state state);
77 void (*state_changed) (void *data, enum pw_node_state old,
78 enum pw_node_state state, const char *error);
79
81 void (*async_complete) (void *data, uint32_t seq, int res);
82
84 void (*event) (void *data, const struct spa_event *event);
85
87 void (*need_input) (void *data);
89 void (*have_output) (void *data);
91 void (*reuse_buffer) (void *data, uint32_t port_id, uint32_t buffer_id);
92 };
93
95 #define PW_NODE_PROP_MEDIA "pipewire.media"
96
97 #define PW_NODE_PROP_CATEGORY "pipewire.category"
98
100 #define PW_NODE_PROP_ROLE "pipewire.role"
101
102 #define PW_NODE_PROP_EXCLUSIVE "pipewire.exclusive"
103
104 #define PW_NODE_PROP_AUTOCONNECT "pipewire.autoconnect"
105
106 #define PW_NODE_PROP_TARGET_NODE "pipewire.target.node"
107
109 struct pw_node *
110 pw_node_new(struct pw_core *core,
111 const char *name,
112 struct pw_properties *properties,
113 size_t user_data_size );
114
116 int pw_node_register(struct pw_node *node,
117 struct pw_client *owner,
118 struct pw_global *parent,
119 struct pw_properties *properties );
120
122 void pw_node_destroy(struct pw_node *node);
123
125 const struct pw_node_info *pw_node_get_info(struct pw_node *node);
126
128 void * pw_node_get_user_data(struct pw_node *node);
129
131 struct pw_core *pw_node_get_core(struct pw_node *node);
132
134 struct pw_global *pw_node_get_global(struct pw_node *node);
135
137 const struct pw_properties *pw_node_get_properties(struct pw_node *node);
138
140 int pw_node_update_properties(struct pw_node *node, const struct spa_dict *dict);
141
143 void pw_node_set_implementation(struct pw_node *node, struct spa_node *spa_node);
145 struct spa_node *pw_node_get_implementation(struct pw_node *node);
146
148 void pw_node_add_listener(struct pw_node *node,
149 struct spa_hook *listener,
150 const struct pw_node_events *events,
151 void *data);
152
157 int pw_node_for_each_port(struct pw_node *node,
158 enum pw_direction direction,
159 int (*callback) (void *data, struct pw_port *port),
160 void *data);
161
162 int pw_node_for_each_param(struct pw_node *node,
163 uint32_t param_id,
164 uint32_t index, uint32_t max,
165 const struct spa_pod *filter,
166 int (*callback) (void *data,
167 uint32_t id, uint32_t index, uint32_t next,
168 struct spa_pod *param),
169 void *data);
170
172 struct pw_port *
173 pw_node_find_port(struct pw_node *node, enum pw_direction direction, uint32_t port_id);
174
176 uint32_t pw_node_get_free_port_id(struct pw_node *node, enum pw_direction direction);
177
180 struct pw_port * pw_node_get_free_port(struct pw_node *node, enum pw_direction direction);
181
184 int pw_node_set_active(struct pw_node *node, bool active);
185
187 bool pw_node_is_active(struct pw_node *node);
188
190 int pw_node_set_enabled(struct pw_node *node, bool enabled);
191
193 bool pw_node_is_enabled(struct pw_node *node);
194
195 #ifdef __cplusplus
196 }
197 #endif
198
199 #endif /* __PIPEWIRE_NODE_H__ */
pw_properties
A collection of key/value pairs.
Definition: properties.h:38
pw_node_events::state_request
void(* state_request)(void *data, enum pw_node_state state)
a new state is requested on the node
Definition: node.h:75
pw_node_events::port_removed
void(* port_removed)(void *data, struct pw_port *port)
a port was removed
Definition: node.h:65
pw_node::pw_node_new
struct pw_node * pw_node_new(struct pw_core *core, const char *name, struct pw_properties *properties, size_t user_data_size)
Create a new node.
Definition: node.c:399
pw_node_set_active
int pw_node_set_active(struct pw_node *node, bool active)
Set a node active.
Definition: node.c:963
pw_node_find_port
struct pw_port * pw_node_find_port(struct pw_node *node, enum pw_direction direction, uint32_t port_id)
Find the port with direction and port_id or NULL when not found.
Definition: node.c:730
pw_node_events::info_changed
void(* info_changed)(void *data, struct pw_node_info *info)
the node info changed
Definition: node.h:68
pw_node_state
pw_node_state
The different node states.
Definition: introspect.h:33
pw_node_register
int pw_node_register(struct pw_node *node, struct pw_client *owner, struct pw_global *parent, struct pw_properties *properties)
Complete initialization of the node and register.
Definition: node.c:329
pw_node_is_active
bool pw_node_is_active(struct pw_node *node)
Check if a node is active.
Definition: node.c:982
introspect.h
pw_properties::dict
struct spa_dict dict
Definition: properties.h:39
pw_node_get_user_data
void * pw_node_get_user_data(struct pw_node *node)
Get node user_data.
Definition: node.c:463
pw_node_is_enabled
bool pw_node_is_enabled(struct pw_node *node)
Check if a node is enabled.
Definition: node.c:1009
core.h
pw_core
the core PipeWire object
global.h
pw_node_events::initialized
void(* initialized)(void *data)
the node is initialized
Definition: node.h:60
pw_node_info::state
enum pw_node_state state
the current state of the node
Definition: introspect.h:156
pw_node_events::need_input
void(* need_input)(void *data)
the node wants input
Definition: node.h:87
pw_node_events::event
void(* event)(void *data, const struct spa_event *event)
an event is emited
Definition: node.h:84
pw_node_update_properties
int pw_node_update_properties(struct pw_node *node, const struct spa_dict *dict)
Update the node properties.
Definition: node.c:487
pw_node_events::active_changed
void(* active_changed)(void *data, bool active)
the node active state changed
Definition: node.h:70
pw_node_set_enabled
int pw_node_set_enabled(struct pw_node *node, bool enabled)
Set a node enabled.
Definition: node.c:988
pw_node_for_each_param
int pw_node_for_each_param(struct pw_node *node, uint32_t param_id, uint32_t index, uint32_t max, const struct spa_pod *filter, int(*callback)(void *data, uint32_t id, uint32_t index, uint32_t next, struct spa_pod *param), void *data)
Definition: node.c:696
pw_node_get_free_port_id
uint32_t pw_node_get_free_port_id(struct pw_node *node, enum pw_direction direction)
Get a free unused port_id from the node.
Definition: node.c:742
pw_node_get_core
struct pw_core * pw_node_get_core(struct pw_node *node)
Get the core of this node.
Definition: node.c:469
pw_node_events::async_complete
void(* async_complete)(void *data, uint32_t seq, int res)
an async operation completed on the node
Definition: node.h:81
resource.h
pw_client
PipeWire client object class.
pw_node_events::have_output
void(* have_output)(void *data)
the node has output
Definition: node.h:89
pw_node_get_global
struct pw_global * pw_node_get_global(struct pw_node *node)
Get the global of this node.
Definition: node.c:475
pw_node_events::version
uint32_t version
Definition: node.h:53
pw_node_events::port_added
void(* port_added)(void *data, struct pw_port *port)
a port was added
Definition: node.h:63
pw_node_for_each_port
int pw_node_for_each_port(struct pw_node *node, enum pw_direction direction, int(*callback)(void *data, struct pw_port *port), void *data)
Iterate the ports in the given direction.
Definition: node.c:675
pw_node
PipeWire node class.
port.h
pw_node_events::free
void(* free)(void *data)
the node is about to be freed
Definition: node.h:58
pw_global
A global object visible to remote clients.
pw_node_set_implementation
void pw_node_set_implementation(struct pw_node *node, struct spa_node *spa_node)
Set the node implementation.
Definition: node.c:578
pw_node_get_info
const struct pw_node_info * pw_node_get_info(struct pw_node *node)
Get the node info.
Definition: node.c:457
pw_node_get_properties
const struct pw_properties * pw_node_get_properties(struct pw_node *node)
Get the node properties.
Definition: node.c:481
pw_node::pw_node_get_free_port
struct pw_port * pw_node_get_free_port(struct pw_node *node, enum pw_direction direction)
pw_node_get_free_port:
Definition: node.c:760
pw_node_events::state_changed
void(* state_changed)(void *data, enum pw_node_state old, enum pw_node_state state, const char *error)
the state of the node changed
Definition: node.h:77
pw_node_add_listener
void pw_node_add_listener(struct pw_node *node, struct spa_hook *listener, const struct pw_node_events *events, void *data)
Add an event listener.
Definition: node.c:596
pw_node_events::destroy
void(* destroy)(void *data)
the node is destroyed
Definition: node.h:56
pw_node_events::enabled_changed
void(* enabled_changed)(void *data, bool enabled)
the node enabled state changed
Definition: node.h:72
pw_port
The port object.
pw_node_events::reuse_buffer
void(* reuse_buffer)(void *data, uint32_t port_id, uint32_t buffer_id)
the node has a buffer to reuse
Definition: node.h:91
pw_node_info
The node information.
Definition: introspect.h:142
pw_node_get_implementation
struct spa_node * pw_node_get_implementation(struct pw_node *node)
Get the node implementation.
Definition: node.c:590
pw_direction
pw_direction
The direction of a port.
Definition: introspect.h:47
pw_node_events
Node events, listen to them with pw_node_add_listener.
Definition: node.h:51
pw_node_info::error
const char * error
an error reason if state is error
Definition: introspect.h:157
pw_node::pw_node_destroy
SPA_EXPORT void pw_node_destroy(struct pw_node *node)
Destroy a node.
Definition: node.c:626