PipeWire: spa/support/plugin-loader.h Source File

PipeWire 0.3.51

plugin-loader.h
Go to the documentation of this file.
1/* Simple Plugin API
2 *
3 * Copyright © 2021 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 SPA_PLUGIN_LOADER_H
26#define SPA_PLUGIN_LOADER_H
27
28#ifdef __cplusplus
29extern "C" {
30#endif
31
32#include <spa/utils/hook.h>
33#include <spa/utils/dict.h>
34
44#define SPA_TYPE_INTERFACE_PluginLoader SPA_TYPE_INFO_INTERFACE_BASE "PluginLoader"
45
46#define SPA_VERSION_PLUGIN_LOADER 0
47struct spa_plugin_loader { struct spa_interface iface; };
48
49struct spa_plugin_loader_methods {
50#define SPA_VERSION_PLUGIN_LOADER_METHODS 0
51 uint32_t version;
52
60 struct spa_handle *(*load) (void *object, const char *factory_name, const struct spa_dict *info);
61
68 int (*unload)(void *object, struct spa_handle *handle);
69};
70
71static inline struct spa_handle *
72 spa_plugin_loader_load(struct spa_plugin_loader *loader, const char *factory_name, const struct spa_dict *info)
73{
74 struct spa_handle *res = NULL;
75 if (SPA_LIKELY(loader != NULL))
76 spa_interface_call_res(&loader->iface,
77 struct spa_plugin_loader_methods, res,
78 load, 0, factory_name, info);
79 return res;
80}
81
82static inline int
83 spa_plugin_loader_unload(struct spa_plugin_loader *loader, struct spa_handle *handle)
84{
85 int res = -1;
86 if (SPA_LIKELY(loader != NULL))
87 spa_interface_call_res(&loader->iface,
88 struct spa_plugin_loader_methods, res,
89 unload, 0, handle);
90 return res;
91}
92
97#ifdef __cplusplus
98} /* extern "C" */
99#endif
100
101#endif /* SPA_PLUGIN_LOADER_H */
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_plugin_loader_load
static struct spa_handle * spa_plugin_loader_load(struct spa_plugin_loader *loader, const char *factory_name, const struct spa_dict *info)
Definition: plugin-loader.h:80
spa_plugin_loader_unload
static int spa_plugin_loader_unload(struct spa_plugin_loader *loader, struct spa_handle *handle)
Definition: plugin-loader.h:91
SPA_LIKELY
#define SPA_LIKELY(x)
Definition: defs.h:313
hook.h
spa/utils/hook.h
spa_dict
Definition: dict.h:59
spa_handle
Definition: plugin.h:50
spa_interface
Definition: hook.h:158
spa_plugin_loader_methods
Definition: plugin-loader.h:56
spa_plugin_loader_methods::unload
int(* unload)(void *object, struct spa_handle *handle)
Unload a SPA plugin.
Definition: plugin-loader.h:76
spa_plugin_loader_methods::version
uint32_t version
Definition: plugin-loader.h:59
spa_plugin_loader
Definition: plugin-loader.h:54
spa_plugin_loader::iface
struct spa_interface iface
Definition: plugin-loader.h:54
dict.h
spa/utils/dict.h