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
|
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <unistd.h>
/* list of paths to check for plugins */
GList *_plugin_paths;
/* whether or not to spew library load issues */
gboolean _plugin_spew = FALSE;
void plugin_initialize() {
_plugin_paths = NULL;
/* add the main (installed) library path */
_plugin_paths = g_list_prepend(_plugin_paths,PLUGINS_DIR);
/* if this is set, we add build-directory paths to the list */
#ifdef PLUGINS_USE_SRCDIR
_plugin_paths = g_list_prepend(_plugin_paths,PLUGINS_SRCDIR);
#endif /* PLUGINS_USE_SRCDIR */
}
static GModule *plugin_load_recurse(gchar *directory,gchar *name) {
DIR *dir;
struct dirent *dirent;
GModule *mod;
dir = opendir(directory);
if (dir) {
while (dirent = readdir(dir)) {
/* don't want to recurse in place or backwards */
if (strcmp(dirent->d_name,".") && strcmp(dirent->d_name,"..")) {
mod = plugin_load_recurse(g_strjoin("/",directory,dirent->d_name,
NULL),name);
if (mod != NULL) {
closedir(dir);
return mod;
}
}
}
closedir(dir);
} else {
if (strstr(directory,".so")) {
gchar *temp;
if (name) {
if ((temp = strstr(directory,name)) &&
(!strcmp(temp,name))) {
mod = plugin_load_absolute(directory);
if (mod != NULL) return mod;
}
} else if ((temp = strstr(directory,".so")) &&
(!strcmp(temp,".so"))) {
mod = plugin_load_absolute(directory);
if (mod != NULL) return mod;
}
}
}
return NULL;
}
/**
* plugin_load_all:
*
* Load all plugins in the path.
*/
void plugin_load_all() {
GList *path;
path = _plugin_paths;
while (path != NULL) {
plugin_load_recurse(path->data,NULL);
path = g_list_next(path);
}
}
/**
* plugin_load:
* @name: name of plugin to load
*
* Load the named plugin. Name should be given as
* "libplugin.so".
*
* Returns: whether the plugin was loaded or not
*/
GModule *plugin_load(gchar *name) {
GList *path;
gchar *libspath;
GModule *mod;
// g_print("attempting to load plugin '%s'\n",name);
path = _plugin_paths;
while (path != NULL) {
mod = plugin_load_absolute(g_module_build_path(path->data,name));
if (mod != NULL) return mod;
libspath = g_strconcat(path->data,"/.libs",NULL);
// g_print("trying to load '%s'\n",g_module_build_path(libspath,name));
mod = plugin_load_absolute(g_module_build_path(libspath,name));
if (mod != NULL) {
g_free(libspath);
return mod;
}
g_free(libspath);
// g_print("trying to load '%s' from '%s'\n",name,path->data);
mod = plugin_load_recurse(path->data,name);
if (mod != NULL) return mod;
path = g_list_next(path);
}
return NULL;
}
/**
* plugin_load_absolute:
* @name: name of plugin to load
*
* Returns: whether or not the plugin loaded
*/
GModule *plugin_load_absolute(gchar *name) {
GModule *mod;
// g_print("trying to load '%s\n",name);
if (g_module_supported() == FALSE) {
g_print("wow, you built this on a platform without dynamic loading???\n");
return;
}
mod = g_module_open(name,0);
if (mod != NULL) {
return mod;
} else if (_gst_plugin_spew) {
// if (strstr(g_module_error(),"No such") == NULL)
g_print("error loading plugin: %s\n",g_module_error());
}
return NULL;
}
|
