PipeWire: pipewire/core.h Source File

PipeWire 0.3.50

core.h
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1/* PipeWire
2 *
3 * Copyright © 2018 Wim Taymans
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24
25#ifndef PIPEWIRE_CORE_H
26#define PIPEWIRE_CORE_H
27
28#ifdef __cplusplus
29extern "C" {
30#endif
31
32#include <stdarg.h>
33#include <errno.h>
34
35#include <spa/utils/hook.h>
36
54#define PW_TYPE_INTERFACE_Core PW_TYPE_INFO_INTERFACE_BASE "Core"
55#define PW_TYPE_INTERFACE_Registry PW_TYPE_INFO_INTERFACE_BASE "Registry"
56
57#define PW_VERSION_CORE 3
58struct pw_core;
59#define PW_VERSION_REGISTRY 3
60 struct pw_registry;
61
63#define PW_DEFAULT_REMOTE "pipewire-0"
64
66#define PW_ID_CORE 0
67
68/* invalid ID that matches any object when used for permissions */
69#define PW_ID_ANY (uint32_t)(0xffffffff)
70
73struct pw_core_info {
74 uint32_t id;
75 uint32_t cookie;
76 const char *user_name;
77 const char *host_name;
78 const char *version;
79 const char *name;
80#define PW_CORE_CHANGE_MASK_PROPS (1 << 0)
81#define PW_CORE_CHANGE_MASK_ALL ((1 << 1)-1)
82 uint64_t change_mask;
83 struct spa_dict *props;
84};
85
86#include <pipewire/context.h>
87#include <pipewire/properties.h>
88#include <pipewire/proxy.h>
89
91 struct pw_core_info *
92 pw_core_info_update(struct pw_core_info *info,
93 const struct pw_core_info *update);
95 struct pw_core_info *
96 pw_core_info_merge(struct pw_core_info *info,
97 const struct pw_core_info *update, bool reset);
99void pw_core_info_free(struct pw_core_info *info);
100
103#define PW_CORE_EVENT_INFO 0
104#define PW_CORE_EVENT_DONE 1
105#define PW_CORE_EVENT_PING 2
106#define PW_CORE_EVENT_ERROR 3
107#define PW_CORE_EVENT_REMOVE_ID 4
108#define PW_CORE_EVENT_BOUND_ID 5
109#define PW_CORE_EVENT_ADD_MEM 6
110#define PW_CORE_EVENT_REMOVE_MEM 7
111#define PW_CORE_EVENT_NUM 8
112
116struct pw_core_events {
117#define PW_VERSION_CORE_EVENTS 0
118 uint32_t version;
119
128 void (*info) (void *object, const struct pw_core_info *info);
137 void (*done) (void *object, uint32_t id, int seq);
138
144 void (*ping) (void *object, uint32_t id, int seq);
145
163 void (*error) (void *object, uint32_t id, int seq, int res, const char *message);
175 void (*remove_id) (void *object, uint32_t id);
176
187 void (*bound_id) (void *object, uint32_t id, uint32_t global_id);
188
203 void (*add_mem) (void *object, uint32_t id, uint32_t type, int fd, uint32_t flags);
204
210 void (*remove_mem) (void *object, uint32_t id);
211};
212
213#define PW_CORE_METHOD_ADD_LISTENER 0
214#define PW_CORE_METHOD_HELLO 1
215#define PW_CORE_METHOD_SYNC 2
216#define PW_CORE_METHOD_PONG 3
217#define PW_CORE_METHOD_ERROR 4
218#define PW_CORE_METHOD_GET_REGISTRY 5
219#define PW_CORE_METHOD_CREATE_OBJECT 6
220#define PW_CORE_METHOD_DESTROY 7
221#define PW_CORE_METHOD_NUM 8
222
231struct pw_core_methods {
232#define PW_VERSION_CORE_METHODS 0
233 uint32_t version;
234
235 int (*add_listener) (void *object,
236 struct spa_hook *listener,
237 const struct pw_core_events *events,
238 void *data);
244 int (*hello) (void *object, uint32_t version);
256 int (*sync) (void *object, uint32_t id, int seq);
264 int (*pong) (void *object, uint32_t id, int seq);
281 int (*error) (void *object, uint32_t id, int seq, int res, const char *message);
290 struct pw_registry * (*get_registry) (void *object, uint32_t version,
291 size_t user_data_size);
292
302 void * (*create_object) (void *object,
303 const char *factory_name,
304 const char *type,
305 uint32_t version,
306 const struct spa_dict *props,
307 size_t user_data_size);
315 int (*destroy) (void *object, void *proxy);
316};
317
318#define pw_core_method(o,method,version,...) \
319({ \
320 int _res = -ENOTSUP; \
321 spa_interface_call_res((struct spa_interface*)o, \
322 struct pw_core_methods, _res, \
323 method, version, ##__VA_ARGS__); \
324 _res; \
325})
326
327#define pw_core_add_listener(c,...) pw_core_method(c,add_listener,0,__VA_ARGS__)
328#define pw_core_hello(c,...) pw_core_method(c,hello,0,__VA_ARGS__)
329#define pw_core_sync(c,...) pw_core_method(c,sync,0,__VA_ARGS__)
330#define pw_core_pong(c,...) pw_core_method(c,pong,0,__VA_ARGS__)
331#define pw_core_error(c,...) pw_core_method(c,error,0,__VA_ARGS__)
332
333
334static inline
335 SPA_PRINTF_FUNC(5, 0) int
336 pw_core_errorv(struct pw_core *core, uint32_t id, int seq,
337 int res, const char *message, va_list args)
338{
339 char buffer[1024];
340 vsnprintf(buffer, sizeof(buffer), message, args);
341 buffer[1023] = '\0';
342 return pw_core_error(core, id, seq, res, buffer);
343}
344
345static inline
346 SPA_PRINTF_FUNC(5, 6) int
347 pw_core_errorf(struct pw_core *core, uint32_t id, int seq,
348 int res, const char *message, ...)
349{
350 va_list args;
351 int r;
352 va_start(args, message);
353 r = pw_core_errorv(core, id, seq, res, message, args);
354 va_end(args);
355 return r;
356}
357
358static inline struct pw_registry *
359 pw_core_get_registry(struct pw_core *core, uint32_t version, size_t user_data_size)
360{
361 struct pw_registry *res = NULL;
362 spa_interface_call_res((struct spa_interface*)core,
363 struct pw_core_methods, res,
364 get_registry, 0, version, user_data_size);
365 return res;
366}
367
368 static inline void *
369 pw_core_create_object(struct pw_core *core,
370 const char *factory_name,
371 const char *type,
372 uint32_t version,
373 const struct spa_dict *props,
374 size_t user_data_size)
375{
376 void *res = NULL;
377 spa_interface_call_res((struct spa_interface*)core,
378 struct pw_core_methods, res,
379 create_object, 0, factory_name,
380 type, version, props, user_data_size);
381 return res;
382}
383
384#define pw_core_destroy(c,...) pw_core_method(c,destroy,0,__VA_ARGS__)
385
425#define PW_REGISTRY_EVENT_GLOBAL 0
426#define PW_REGISTRY_EVENT_GLOBAL_REMOVE 1
427#define PW_REGISTRY_EVENT_NUM 2
428
430struct pw_registry_events {
431#define PW_VERSION_REGISTRY_EVENTS 0
432 uint32_t version;
445 void (*global) (void *object, uint32_t id,
446 uint32_t permissions, const char *type, uint32_t version,
447 const struct spa_dict *props);
457 void (*global_remove) (void *object, uint32_t id);
458};
459
460#define PW_REGISTRY_METHOD_ADD_LISTENER 0
461#define PW_REGISTRY_METHOD_BIND 1
462#define PW_REGISTRY_METHOD_DESTROY 2
463#define PW_REGISTRY_METHOD_NUM 3
464
466struct pw_registry_methods {
467#define PW_VERSION_REGISTRY_METHODS 0
468 uint32_t version;
469
470 int (*add_listener) (void *object,
471 struct spa_hook *listener,
472 const struct pw_registry_events *events,
473 void *data);
486 void * (*bind) (void *object, uint32_t id, const char *type, uint32_t version,
487 size_t use_data_size);
488
496 int (*destroy) (void *object, uint32_t id);
497};
498
499#define pw_registry_method(o,method,version,...) \
500({ \
501 int _res = -ENOTSUP; \
502 spa_interface_call_res((struct spa_interface*)o, \
503 struct pw_registry_methods, _res, \
504 method, version, ##__VA_ARGS__); \
505 _res; \
506})
507
509#define pw_registry_add_listener(p,...) pw_registry_method(p,add_listener,0,__VA_ARGS__)
510
511static inline void *
512 pw_registry_bind(struct pw_registry *registry,
513 uint32_t id, const char *type, uint32_t version,
514 size_t user_data_size)
515{
516 void *res = NULL;
517 spa_interface_call_res((struct spa_interface*)registry,
518 struct pw_registry_methods, res,
519 bind, 0, id, type, version, user_data_size);
520 return res;
521}
522
523#define pw_registry_destroy(p,...) pw_registry_method(p,destroy,0,__VA_ARGS__)
524
544struct pw_core *
545 pw_context_connect(struct pw_context *context,
546 struct pw_properties *properties,
547 size_t user_data_size);
548
559struct pw_core *
560 pw_context_connect_fd(struct pw_context *context,
561 int fd,
562 struct pw_properties *properties,
563 size_t user_data_size);
564
573struct pw_core *
574 pw_context_connect_self(struct pw_context *context,
575 struct pw_properties *properties,
576 size_t user_data_size);
577
580int pw_core_steal_fd(struct pw_core *core);
581
584 int pw_core_set_paused(struct pw_core *core, bool paused);
585
587int pw_core_disconnect(struct pw_core *core);
588
591void *pw_core_get_user_data(struct pw_core *core);
592
595struct pw_client * pw_core_get_client(struct pw_core *core);
596
598struct pw_context * pw_core_get_context(struct pw_core *core);
599
601const struct pw_properties *pw_core_get_properties(struct pw_core *core);
602
606int pw_core_update_properties(struct pw_core *core, const struct spa_dict *dict);
607
609struct pw_mempool * pw_core_get_mempool(struct pw_core *core);
610
612struct pw_proxy *pw_core_find_proxy(struct pw_core *core, uint32_t id);
613
615struct pw_proxy *pw_core_export(struct pw_core *core,
616 const char *type,
617 const struct spa_dict *props,
618 void *object,
619 size_t user_data_size );
620
625#ifdef __cplusplus
626}
627#endif
628
629#endif /* PIPEWIRE_CORE_H */
context.h
pipewire/context.h
pw_core_get_context
struct pw_context * pw_core_get_context(struct pw_core *core)
Get the context object used to created this core.
Definition: core.c:132
pw_core_errorf
static int pw_core_errorf(struct pw_core *core, uint32_t id, int seq, int res, const char *message,...)
Definition: core.h:393
pw_core_errorv
static int pw_core_errorv(struct pw_core *core, uint32_t id, int seq, int res, const char *message, va_list args)
Definition: core.h:382
pw_core_find_proxy
struct pw_proxy * pw_core_find_proxy(struct pw_core *core, uint32_t id)
Get the proxy with the given id.
Definition: core.c:269
pw_core_error
#define pw_core_error(c,...)
Fatal error event.
Definition: core.h:375
pw_context_connect
struct pw_core * pw_context_connect(struct pw_context *context, struct pw_properties *properties, size_t user_data_size)
Connect to a PipeWire instance.
Definition: core.c:402
pw_core_get_mempool
struct pw_mempool * pw_core_get_mempool(struct pw_core *core)
Get the core mempool object.
Definition: core.c:483
pw_core_get_properties
const struct pw_properties * pw_core_get_properties(struct pw_core *core)
Get properties from the core.
Definition: core.c:138
pw_context_connect_self
struct pw_core * pw_context_connect_self(struct pw_context *context, struct pw_properties *properties, size_t user_data_size)
Connect to a given PipeWire instance.
Definition: core.c:454
pw_core_get_client
struct pw_client * pw_core_get_client(struct pw_core *core)
Get the client proxy of the connected core.
Definition: core.c:263
pw_core_get_user_data
void * pw_core_get_user_data(struct pw_core *core)
Get the user_data.
Definition: core.c:162
pw_core_update_properties
int pw_core_update_properties(struct pw_core *core, const struct spa_dict *dict)
Update the core properties.
Definition: core.c:144
pw_core_export
struct pw_proxy * pw_core_export(struct pw_core *core, const char *type, const struct spa_dict *props, void *object, size_t user_data_size)
Export an object into the PipeWire instance associated with core.
Definition: core.c:275
pw_core_disconnect
int pw_core_disconnect(struct pw_core *core)
disconnect and destroy a core
Definition: core.c:489
pw_core_create_object
static void * pw_core_create_object(struct pw_core *core, const char *factory_name, const char *type, uint32_t version, const struct spa_dict *props, size_t user_data_size)
Definition: core.h:415
pw_core_steal_fd
int pw_core_steal_fd(struct pw_core *core)
Steal the fd of the core connection or < 0 on error.
Definition: core.c:468
pw_core_get_registry
static struct pw_registry * pw_core_get_registry(struct pw_core *core, uint32_t version, size_t user_data_size)
Definition: core.h:405
pw_core_set_paused
int pw_core_set_paused(struct pw_core *core, bool paused)
Pause or resume the core.
Definition: core.c:476
pw_core_info_free
void pw_core_info_free(struct pw_core_info *info)
Free a pw_core_info
Definition: introspect.c:165
pw_context_connect_fd
struct pw_core * pw_context_connect_fd(struct pw_context *context, int fd, struct pw_properties *properties, size_t user_data_size)
Connect to a PipeWire instance on the given socket.
Definition: core.c:429
pw_core_info_merge
struct pw_core_info * pw_core_info_merge(struct pw_core_info *info, const struct pw_core_info *update, bool reset)
Update an existing pw_core_info with update.
Definition: introspect.c:127
pw_core_info_update
struct pw_core_info * pw_core_info_update(struct pw_core_info *info, const struct pw_core_info *update)
Update an existing pw_core_info with update with reset.
Definition: introspect.c:158
pw_registry_bind
static void * pw_registry_bind(struct pw_registry *registry, uint32_t id, const char *type, uint32_t version, size_t user_data_size)
Definition: core.h:571
spa_interface_call_res
#define spa_interface_call_res(iface, method_type, res, method, vers,...)
Invoke method named method in the callbacks on the given interface object.
Definition: hook.h:255
SPA_PRINTF_FUNC
#define SPA_PRINTF_FUNC(fmt, arg1)
Definition: defs.h:260
hook.h
spa/utils/hook.h
properties.h
pipewire/properties.h
proxy.h
pipewire/proxy.h
pw_client
pw_context
pw_core_events
Core events.
Definition: core.h:141
pw_core_events::error
void(* error)(void *object, uint32_t id, int seq, int res, const char *message)
Fatal error event.
Definition: core.h:189
pw_core_events::remove_mem
void(* remove_mem)(void *object, uint32_t id)
Remove memory for a client.
Definition: core.h:236
pw_core_events::done
void(* done)(void *object, uint32_t id, int seq)
Emit a done event.
Definition: core.h:163
pw_core_events::version
uint32_t version
Definition: core.h:144
pw_core_events::remove_id
void(* remove_id)(void *object, uint32_t id)
Remove an object ID.
Definition: core.h:201
pw_core_events::info
void(* info)(void *object, const struct pw_core_info *info)
Notify new core info.
Definition: core.h:154
pw_core_events::ping
void(* ping)(void *object, uint32_t id, int seq)
Emit a ping event.
Definition: core.h:170
pw_core_events::bound_id
void(* bound_id)(void *object, uint32_t id, uint32_t global_id)
Notify an object binding.
Definition: core.h:213
pw_core_events::add_mem
void(* add_mem)(void *object, uint32_t id, uint32_t type, int fd, uint32_t flags)
Add memory for a client.
Definition: core.h:229
pw_core_info
The core information.
Definition: core.h:87
pw_core_info::change_mask
uint64_t change_mask
bitfield of changed fields since last call
Definition: core.h:98
pw_core_info::version
const char * version
version of the core
Definition: core.h:92
pw_core_info::cookie
uint32_t cookie
a random cookie for identifying this instance of PipeWire
Definition: core.h:89
pw_core_info::id
uint32_t id
id of the global
Definition: core.h:88
pw_core_info::user_name
const char * user_name
name of the user that started the core
Definition: core.h:90
pw_core_info::host_name
const char * host_name
name of the machine the core is running on
Definition: core.h:91
pw_core_methods
Core methods.
Definition: core.h:266
pw_core_methods::add_listener
int(* add_listener)(void *object, struct spa_hook *listener, const struct pw_core_events *events, void *data)
Definition: core.h:271
pw_core_methods::pong
int(* pong)(void *object, uint32_t id, int seq)
Reply to a server ping event.
Definition: core.h:300
pw_core_methods::destroy
int(* destroy)(void *object, void *proxy)
Destroy an resource.
Definition: core.h:351
pw_core_methods::hello
int(* hello)(void *object, uint32_t version)
Start a conversation with the server.
Definition: core.h:280
pw_core_methods::error
int(* error)(void *object, uint32_t id, int seq, int res, const char *message)
Fatal error event.
Definition: core.h:317
pw_core_methods::sync
int(* sync)(void *object, uint32_t id, int seq)
Do server roundtrip.
Definition: core.h:292
pw_core_methods::version
uint32_t version
Definition: core.h:269
pw_core
pw_mempool
A memory pool is a collection of pw_memblocks.
Definition: mem.h:77
pw_properties
Definition: properties.h:53
pw_properties::dict
struct spa_dict dict
dictionary of key/values
Definition: properties.h:54
pw_proxy
pw_registry_events
Registry events.
Definition: core.h:481
pw_registry_events::global_remove
void(* global_remove)(void *object, uint32_t id)
Notify of a global object removal.
Definition: core.h:509
pw_registry_events::version
uint32_t version
Definition: core.h:484
pw_registry_events::global
void(* global)(void *object, uint32_t id, uint32_t permissions, const char *type, uint32_t version, const struct spa_dict *props)
Notify of a new global object.
Definition: core.h:497
pw_registry_methods
Registry methods.
Definition: core.h:522
pw_registry_methods::version
uint32_t version
Definition: core.h:525
pw_registry_methods::add_listener
int(* add_listener)(void *object, struct spa_hook *listener, const struct pw_registry_events *events, void *data)
Definition: core.h:527
pw_registry_methods::destroy
int(* destroy)(void *object, uint32_t id)
Attempt to destroy a global object.
Definition: core.h:553
pw_registry
spa_dict
Definition: dict.h:59
spa_hook
A hook, contains the structure with functions and the data passed to the functions.
Definition: hook.h:351
spa_interface
Definition: hook.h:158