1 /*
2 * JACK Rack
3 *
4 * Original:
5 * Copyright (C) Robert Ham 2002, 2003 (node@users.sourceforge.net)
6 *
7 * Modifications for MLT:
8 * Copyright (C) 2004-2016 Meltytech, LLC
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25 #include <stdlib.h>
26 #include <string.h>
27 #include <stdio.h>
28 #include <dirent.h>
29 #include <errno.h>
30 #include <sys/stat.h>
31 #include <dlfcn.h>
32 #include <math.h>
33 #include <strings.h>
34 #include <ctype.h>
35 #include <ladspa.h>
36 #include <sys/types.h>
37 #include <unistd.h>
38
39 #include "plugin_mgr.h"
40 #include "plugin_desc.h"
41 #include "framework/mlt_log.h"
42 #include "framework/mlt_factory.h"
43
44 static gboolean
plugin_is_valid(const LADSPA_Descriptor * descriptor)45 plugin_is_valid (const LADSPA_Descriptor * descriptor)
46 {
47 unsigned long i;
48 unsigned long icount = 0;
49 unsigned long ocount = 0;
50
51 for (i = 0; i < descriptor->PortCount; i++)
52 {
53 if (!LADSPA_IS_PORT_AUDIO (descriptor->PortDescriptors[i]))
54 continue;
55
56 if (LADSPA_IS_PORT_INPUT (descriptor->PortDescriptors[i]))
57 icount++;
58 else
59 ocount++;
60 }
61
62 if (ocount == 0)
63 return FALSE;
64
65 return TRUE;
66 }
67
68 static void
plugin_mgr_get_object_file_plugins(plugin_mgr_t * plugin_mgr,const char * filename)69 plugin_mgr_get_object_file_plugins (plugin_mgr_t * plugin_mgr, const char * filename)
70 {
71 const char * dlerr;
72 void * dl_handle;
73 LADSPA_Descriptor_Function get_descriptor;
74 const LADSPA_Descriptor * descriptor;
75 unsigned long plugin_index;
76 plugin_desc_t * desc, * other_desc = NULL;
77 GSList * list;
78 gboolean exists;
79 int err;
80
81 /* open the object file */
82 dl_handle = dlopen (filename, RTLD_LAZY);
83 if (!dl_handle)
84 {
85 mlt_log_info( NULL, "%s: error opening shared object file '%s': %s\n",
86 __FUNCTION__, filename, dlerror());
87 return;
88 }
89
90
91 /* get the get_descriptor function */
92 dlerror (); /* clear the error report */
93
94 get_descriptor = (LADSPA_Descriptor_Function)
95 dlsym (dl_handle, "ladspa_descriptor");
96
97 dlerr = dlerror();
98 if (dlerr) {
99 mlt_log_info( NULL, "%s: error finding ladspa_descriptor symbol in object file '%s': %s\n",
100 __FUNCTION__, filename, dlerr);
101 dlclose (dl_handle);
102 return;
103 }
104
105 #ifdef __APPLE__
106 if (!get_descriptor (0)) {
107 void (*constructor)(void) = dlsym (dl_handle, "_init");
108 if (constructor) constructor();
109 }
110 #endif
111
112 plugin_index = 0;
113 while ( (descriptor = get_descriptor (plugin_index)) )
114 {
115 if (!plugin_is_valid (descriptor))
116 {
117 plugin_index++;
118 continue;
119 }
120
121
122 /* check it doesn't already exist */
123 exists = FALSE;
124 for (list = plugin_mgr->all_plugins; list; list = g_slist_next (list))
125 {
126 other_desc = (plugin_desc_t *) list->data;
127
128 if (other_desc->id == descriptor->UniqueID)
129 {
130 exists = TRUE;
131 break;
132 }
133 }
134
135 if (exists)
136 {
137 mlt_log_info( NULL, "Plugin %ld exists in both '%s' and '%s'; using version in '%s'\n",
138 descriptor->UniqueID, other_desc->object_file, filename, other_desc->object_file);
139 plugin_index++;
140 continue;
141 }
142
143
144 desc = plugin_desc_new_with_descriptor (filename, plugin_index, descriptor);
145 plugin_mgr->all_plugins = g_slist_append (plugin_mgr->all_plugins, desc);
146 plugin_index++;
147 plugin_mgr->plugin_count++;
148
149 /* print in the splash screen */
150 /* mlt_log_verbose( NULL, "Loaded plugin '%s'\n", desc->name); */
151 }
152
153 err = dlclose (dl_handle);
154 if (err)
155 {
156 mlt_log_warning( NULL, "%s: error closing object file '%s': %s\n",
157 __FUNCTION__, filename, dlerror ());
158 }
159 }
160
161 static void
plugin_mgr_get_dir_plugins(plugin_mgr_t * plugin_mgr,const char * dir)162 plugin_mgr_get_dir_plugins (plugin_mgr_t * plugin_mgr, const char * dir)
163 {
164 DIR * dir_stream;
165 struct dirent * dir_entry;
166 char * file_name;
167 int err;
168 size_t dirlen;
169
170 dir_stream = opendir (dir);
171 if (!dir_stream)
172 {
173 /* mlt_log_warning( NULL, "%s: error opening directory '%s': %s\n",
174 __FUNCTION__, dir, strerror (errno)); */
175 return;
176 }
177
178 dirlen = strlen (dir);
179
180 while ( (dir_entry = readdir (dir_stream)) )
181 {
182 struct stat info;
183
184 if (strcmp (dir_entry->d_name, ".") == 0 ||
185 mlt_properties_get (plugin_mgr->blacklist, dir_entry->d_name) ||
186 strcmp (dir_entry->d_name, "..") == 0)
187 continue;
188
189 file_name = g_malloc (dirlen + 1 + strlen (dir_entry->d_name) + 1);
190
191 strcpy (file_name, dir);
192 if (file_name[dirlen - 1] == '/')
193 strcpy (file_name + dirlen, dir_entry->d_name);
194 else
195 {
196 file_name[dirlen] = '/';
197 strcpy (file_name + dirlen + 1, dir_entry->d_name);
198 }
199
200 stat (file_name, &info);
201 if (S_ISDIR (info.st_mode))
202 plugin_mgr_get_dir_plugins (plugin_mgr, file_name);
203 else
204 plugin_mgr_get_object_file_plugins (plugin_mgr, file_name);
205
206 g_free (file_name);
207 }
208
209 err = closedir (dir_stream);
210 if (err)
211 mlt_log_warning( NULL, "%s: error closing directory '%s': %s\n",
212 __FUNCTION__, dir, strerror (errno));
213 }
214
215 static void
plugin_mgr_get_path_plugins(plugin_mgr_t * plugin_mgr)216 plugin_mgr_get_path_plugins (plugin_mgr_t * plugin_mgr)
217 {
218 char * ladspa_path, * dir;
219
220 ladspa_path = g_strdup (getenv ("LADSPA_PATH"));
221 #ifdef _WIN32
222 if (!ladspa_path)
223 {
224 ladspa_path = malloc (strlen (mlt_environment("MLT_APPDIR")) + strlen ("\\lib\\ladspa") + 1);
225 strcpy (ladspa_path, mlt_environment("MLT_APPDIR"));
226 strcat (ladspa_path, "\\lib\\ladspa");
227 }
228 #elif defined(__APPLE__) && defined(RELOCATABLE)
229 {
230 ladspa_path = malloc( strlen (mlt_environment ("MLT_APPDIR")) + strlen ("/PlugIns/ladspa") + 1 );
231 strcpy (ladspa_path, mlt_environment ("MLT_APPDIR"));
232 strcat (ladspa_path, "/PlugIns/ladspa" );
233 }
234 #else
235 if (!ladspa_path)
236 ladspa_path = g_strdup ("/usr/local/lib/ladspa:/usr/lib/ladspa:/usr/lib64/ladspa");
237 #endif
238
239 for (dir = strtok (ladspa_path, MLT_DIRLIST_DELIMITER); dir; dir = strtok (NULL, MLT_DIRLIST_DELIMITER))
240 plugin_mgr_get_dir_plugins (plugin_mgr, dir);
241
242 g_free (ladspa_path);
243 }
244
245 static gint
plugin_mgr_sort(gconstpointer a,gconstpointer b)246 plugin_mgr_sort (gconstpointer a, gconstpointer b)
247 {
248 const plugin_desc_t * da;
249 const plugin_desc_t * db;
250 da = (const plugin_desc_t *) a;
251 db = (const plugin_desc_t *) b;
252
253 return strcasecmp (da->name, db->name);
254 }
255
256 plugin_mgr_t *
plugin_mgr_new()257 plugin_mgr_new ()
258 {
259 plugin_mgr_t * pm;
260 char dirname[PATH_MAX];
261
262 pm = g_malloc (sizeof (plugin_mgr_t));
263 pm->all_plugins = NULL;
264 pm->plugins = NULL;
265 pm->plugin_count = 0;
266
267 snprintf (dirname, PATH_MAX, "%s/jackrack/blacklist.txt", mlt_environment ("MLT_DATA"));
268 pm->blacklist = mlt_properties_load (dirname);
269 plugin_mgr_get_path_plugins (pm);
270
271 if (!pm->all_plugins)
272 mlt_log_warning( NULL, "No LADSPA plugins were found!\n\nCheck your LADSPA_PATH environment variable.\n");
273 else
274 pm->all_plugins = g_slist_sort (pm->all_plugins, plugin_mgr_sort);
275
276 return pm;
277 }
278
279 void
plugin_mgr_destroy(plugin_mgr_t * plugin_mgr)280 plugin_mgr_destroy (plugin_mgr_t * plugin_mgr)
281 {
282 GSList * list;
283
284 for (list = plugin_mgr->all_plugins; list; list = g_slist_next (list))
285 plugin_desc_destroy ((plugin_desc_t *) list->data);
286
287 g_slist_free (plugin_mgr->plugins);
288 g_slist_free (plugin_mgr->all_plugins);
289 mlt_properties_close(plugin_mgr->blacklist);
290 free (plugin_mgr);
291 }
292
293
294 void
plugin_mgr_set_plugins(plugin_mgr_t * plugin_mgr,unsigned long rack_channels)295 plugin_mgr_set_plugins (plugin_mgr_t * plugin_mgr, unsigned long rack_channels)
296 {
297 GSList * list;
298 plugin_desc_t * desc;
299
300 /* clear the current plugins */
301 g_slist_free (plugin_mgr->plugins);
302 plugin_mgr->plugins = NULL;
303
304 for (list = plugin_mgr->all_plugins; list; list = g_slist_next (list))
305 {
306 desc = (plugin_desc_t *) list->data;
307
308 if (plugin_desc_get_copies (desc, rack_channels) != 0)
309 plugin_mgr->plugins = g_slist_append (plugin_mgr->plugins, desc);
310 }
311 }
312
313 static plugin_desc_t *
plugin_mgr_find_desc(plugin_mgr_t * plugin_mgr,GSList * plugins,unsigned long id)314 plugin_mgr_find_desc (plugin_mgr_t * plugin_mgr, GSList * plugins, unsigned long id)
315 {
316 GSList * list;
317 plugin_desc_t * desc;
318
319 for (list = plugins; list; list = g_slist_next (list))
320 {
321 desc = (plugin_desc_t *) list->data;
322
323 if (desc->id == id)
324 return desc;
325 }
326
327 return NULL;
328 }
329
330 plugin_desc_t *
plugin_mgr_get_desc(plugin_mgr_t * plugin_mgr,unsigned long id)331 plugin_mgr_get_desc (plugin_mgr_t * plugin_mgr, unsigned long id)
332 {
333 return plugin_mgr_find_desc (plugin_mgr, plugin_mgr->plugins, id);
334 }
335
336 plugin_desc_t *
plugin_mgr_get_any_desc(plugin_mgr_t * plugin_mgr,unsigned long id)337 plugin_mgr_get_any_desc (plugin_mgr_t * plugin_mgr, unsigned long id)
338 {
339 return plugin_mgr_find_desc (plugin_mgr, plugin_mgr->all_plugins, id);
340 }
341
342
343 /* EOF */
344