1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
/* PipeWire
*
* Copyright © 2019 Wim Taymans
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <dlfcn.h>
#include "config.h"
#include <spa/utils/result.h>
#include <pipewire/impl.h>
#include <pipewire/extensions/metadata.h>
/** \page page_module_metadata PipeWire Module: Metadata
*/
#define NAME "metadata"
PW_LOG_TOPIC_STATIC(mod_topic, "mod." NAME);
#define PW_LOG_TOPIC_DEFAULT mod_topic
static const struct spa_dict_item module_props[] = {
{ PW_KEY_MODULE_AUTHOR, "Wim Taymans <wim.taymans@gmail.com>" },
{ PW_KEY_MODULE_DESCRIPTION, "Allow clients to create metadata store" },
{ PW_KEY_MODULE_VERSION, PACKAGE_VERSION },
};
void * pw_metadata_new(struct pw_context *context, struct pw_resource *resource,
struct pw_properties *properties);
struct pw_proxy *pw_core_metadata_export(struct pw_core *core,
const char *type, const struct spa_dict *props, void *object, size_t user_data_size);
int pw_protocol_native_ext_metadata_init(struct pw_context *context);
struct factory_data {
struct pw_impl_factory *factory;
struct spa_hook factory_listener;
struct pw_impl_module *module;
struct spa_hook module_listener;
struct pw_export_type export_metadata;
};
static void *create_object(void *_data,
struct pw_resource *resource,
const char *type,
uint32_t version,
struct pw_properties *properties,
uint32_t new_id)
{
struct factory_data *data = _data;
struct pw_context *context = pw_impl_module_get_context(data->module);
void *result;
struct pw_resource *metadata_resource = NULL;
struct pw_impl_client *client = resource ? pw_resource_get_client(resource) : NULL;
int res;
if (properties == NULL)
properties = pw_properties_new(NULL, NULL);
if (properties == NULL)
return NULL;
pw_properties_setf(properties, PW_KEY_FACTORY_ID, "%d",
pw_impl_factory_get_info(data->factory)->id);
pw_properties_setf(properties, PW_KEY_MODULE_ID, "%d",
pw_impl_module_get_info(data->module)->id);
if (pw_properties_get(properties, PW_KEY_METADATA_NAME) == NULL)
pw_properties_set(properties, PW_KEY_METADATA_NAME, "default");
if (client) {
metadata_resource = pw_resource_new(client, new_id, PW_PERM_ALL, type, version, 0);
if (metadata_resource == NULL) {
res = -errno;
goto error_resource;
}
pw_properties_setf(properties, PW_KEY_CLIENT_ID, "%d",
pw_impl_client_get_info(client)->id);
result = pw_metadata_new(context, metadata_resource, properties);
if (result == NULL) {
properties = NULL;
res = -errno;
goto error_node;
}
} else {
result = pw_context_create_metadata(context, NULL, properties, 0);
if (result == NULL) {
properties = NULL;
res = -errno;
goto error_node;
}
pw_impl_metadata_register(result, NULL);
}
return result;
error_resource:
pw_resource_errorf_id(resource, new_id, res,
"can't create resource: %s", spa_strerror(res));
goto error_exit;
error_node:
pw_resource_errorf_id(resource, new_id, res,
"can't create metadata: %s", spa_strerror(res));
goto error_exit_free;
error_exit_free:
if (metadata_resource)
pw_resource_remove(metadata_resource);
error_exit:
pw_properties_free(properties);
errno = -res;
return NULL;
}
static const struct pw_impl_factory_implementation impl_factory = {
PW_VERSION_IMPL_FACTORY_IMPLEMENTATION,
.create_object = create_object,
};
static void factory_destroy(void *data)
{
struct factory_data *d = data;
spa_hook_remove(&d->factory_listener);
d->factory = NULL;
if (d->module)
pw_impl_module_destroy(d->module);
}
static const struct pw_impl_factory_events factory_events = {
PW_VERSION_IMPL_FACTORY_EVENTS,
.destroy = factory_destroy,
};
static void module_destroy(void *data)
{
struct factory_data *d = data;
spa_hook_remove(&d->module_listener);
spa_list_remove(&d->export_metadata.link);
d->module = NULL;
if (d->factory)
pw_impl_factory_destroy(d->factory);
}
static void module_registered(void *data)
{
struct factory_data *d = data;
struct pw_impl_module *module = d->module;
struct pw_impl_factory *factory = d->factory;
struct spa_dict_item items[1];
char id[16];
int res;
snprintf(id, sizeof(id), "%d", pw_global_get_id(pw_impl_module_get_global(module)));
items[0] = SPA_DICT_ITEM_INIT(PW_KEY_MODULE_ID, id);
pw_impl_factory_update_properties(factory, &SPA_DICT_INIT(items, 1));
if ((res = pw_impl_factory_register(factory, NULL)) < 0) {
pw_log_error("%p: can't register factory: %s", factory, spa_strerror(res));
}
}
static const struct pw_impl_module_events module_events = {
PW_VERSION_IMPL_MODULE_EVENTS,
.destroy = module_destroy,
.registered = module_registered,
};
SPA_EXPORT
int pipewire__module_init(struct pw_impl_module *module, const char *args)
{
struct pw_context *context = pw_impl_module_get_context(module);
struct pw_impl_factory *factory;
struct factory_data *data;
int res;
PW_LOG_TOPIC_INIT(mod_topic);
if ((res = pw_protocol_native_ext_metadata_init(context)) < 0)
return res;
factory = pw_context_create_factory(context,
"metadata",
PW_TYPE_INTERFACE_Metadata,
PW_VERSION_METADATA,
NULL,
sizeof(*data));
if (factory == NULL)
return -errno;
data = pw_impl_factory_get_user_data(factory);
data->factory = factory;
data->module = module;
pw_log_debug("module %p: new", module);
pw_impl_factory_set_implementation(factory,
&impl_factory,
data);
data->export_metadata.type = PW_TYPE_INTERFACE_Metadata;
data->export_metadata.func = pw_core_metadata_export;
if ((res = pw_context_register_export_type(context, &data->export_metadata)) < 0)
goto error;
pw_impl_factory_add_listener(factory, &data->factory_listener, &factory_events, data);
pw_impl_module_add_listener(module, &data->module_listener, &module_events, data);
pw_impl_module_update_properties(module, &SPA_DICT_INIT_ARRAY(module_props));
return 0;
error:
pw_impl_factory_destroy(data->factory);
return res;
}
|
