--- /dev/null
+/*
+ * jack-ladspa-host
+ *
+ * Copyright (C) Robert Ham 2002, 2003 (node@users.sourceforge.net)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <dirent.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <dlfcn.h>
+#include <math.h>
+#include <strings.h>
+#include <ctype.h>
+#include <ladspa.h>
+
+#include "plugin_mgr.h"
+#include "plugin_desc.h"
+#include "ui.h"
+
+
+static gboolean
+plugin_is_valid (const LADSPA_Descriptor * descriptor)
+{
+ unsigned long i;
+ unsigned long icount = 0;
+ unsigned long ocount = 0;
+
+ for (i = 0; i < descriptor->PortCount; i++)
+ {
+ if (!LADSPA_IS_PORT_AUDIO (descriptor->PortDescriptors[i]))
+ continue;
+
+ if (LADSPA_IS_PORT_INPUT (descriptor->PortDescriptors[i]))
+ icount++;
+ else
+ ocount++;
+ }
+
+ if (icount == 0 || ocount == 0)
+ return FALSE;
+
+ return TRUE;
+}
+
+static void
+plugin_mgr_get_object_file_plugins (ui_t * ui, plugin_mgr_t * plugin_mgr, const char * filename)
+{
+ const char * dlerr;
+ void * dl_handle;
+ LADSPA_Descriptor_Function get_descriptor;
+ const LADSPA_Descriptor * descriptor;
+ unsigned long plugin_index;
+ plugin_desc_t * desc, * other_desc = NULL;
+ GSList * list;
+ gboolean exists;
+ int err;
+
+ /* open the object file */
+ dl_handle = dlopen (filename, RTLD_NOW|RTLD_GLOBAL);
+ if (!dl_handle)
+ {
+ fprintf (stderr, "%s: error opening shared object file '%s': %s\n",
+ __FUNCTION__, filename, dlerror());
+ return;
+ }
+
+
+ /* get the get_descriptor function */
+ dlerror (); /* clear the error report */
+
+ get_descriptor = (LADSPA_Descriptor_Function)
+ dlsym (dl_handle, "ladspa_descriptor");
+
+ dlerr = dlerror();
+ if (dlerr) {
+ fprintf (stderr, "%s: error finding ladspa_descriptor symbol in object file '%s': %s\n",
+ __FUNCTION__, filename, dlerr);
+ dlclose (dl_handle);
+ return;
+ }
+
+ plugin_index = 0;
+ while ( (descriptor = get_descriptor (plugin_index)) )
+ {
+ if (!plugin_is_valid (descriptor))
+ {
+ plugin_index++;
+ continue;
+ }
+
+
+ /* check it doesn't already exist */
+ exists = FALSE;
+ for (list = plugin_mgr->all_plugins; list; list = g_slist_next (list))
+ {
+ other_desc = (plugin_desc_t *) list->data;
+
+ if (other_desc->id == descriptor->UniqueID)
+ {
+ exists = TRUE;
+ break;
+ }
+ }
+
+ if (exists)
+ {
+ printf ("Plugin %ld exists in both '%s' and '%s'; using version in '%s'\n",
+ descriptor->UniqueID, other_desc->object_file, filename, other_desc->object_file);
+ plugin_index++;
+ continue;
+ }
+
+
+ desc = plugin_desc_new_with_descriptor (filename, plugin_index, descriptor);
+ plugin_mgr->all_plugins = g_slist_append (plugin_mgr->all_plugins, desc);
+ plugin_index++;
+ plugin_mgr->plugin_count++;
+
+ /* print in the splash screen */
+ /* printf ("Loaded plugin '%s'\n", desc->name); */
+ }
+
+ err = dlclose (dl_handle);
+ if (err)
+ {
+ fprintf (stderr, "%s: error closing object file '%s': %s\n",
+ __FUNCTION__, filename, dlerror ());
+ }
+}
+
+static void
+plugin_mgr_get_dir_plugins (ui_t * ui, plugin_mgr_t * plugin_mgr, const char * dir)
+{
+ DIR * dir_stream;
+ struct dirent * dir_entry;
+ char * file_name;
+ int err;
+ size_t dirlen;
+
+ dir_stream = opendir (dir);
+ if (!dir_stream)
+ {
+/* fprintf (stderr, "%s: error opening directory '%s': %s\n",
+ __FUNCTION__, dir, strerror (errno)); */
+ return;
+ }
+
+ dirlen = strlen (dir);
+
+ while ( (dir_entry = readdir (dir_stream)) )
+ {
+ if (strcmp (dir_entry->d_name, ".") == 0 ||
+ strcmp (dir_entry->d_name, "..") == 0)
+ continue;
+
+ file_name = g_malloc (dirlen + 1 + strlen (dir_entry->d_name) + 1);
+
+ strcpy (file_name, dir);
+ if (file_name[dirlen - 1] == '/')
+ strcpy (file_name + dirlen, dir_entry->d_name);
+ else
+ {
+ file_name[dirlen] = '/';
+ strcpy (file_name + dirlen + 1, dir_entry->d_name);
+ }
+
+ plugin_mgr_get_object_file_plugins (ui, plugin_mgr, file_name);
+
+ g_free (file_name);
+ }
+
+ err = closedir (dir_stream);
+ if (err)
+ fprintf (stderr, "%s: error closing directory '%s': %s\n",
+ __FUNCTION__, dir, strerror (errno));
+}
+
+static void
+plugin_mgr_get_path_plugins (ui_t * ui, plugin_mgr_t * plugin_mgr)
+{
+ char * ladspa_path, * dir;
+
+ ladspa_path = g_strdup (getenv ("LADSPA_PATH"));
+ if (!ladspa_path)
+ ladspa_path = g_strdup ("/usr/local/lib/ladspa:/usr/lib/ladspa");
+
+ dir = strtok (ladspa_path, ":");
+ do
+ plugin_mgr_get_dir_plugins (ui, plugin_mgr, dir);
+ while ((dir = strtok (NULL, ":")));
+
+ g_free (ladspa_path);
+}
+
+static gint
+plugin_mgr_sort (gconstpointer a, gconstpointer b)
+{
+ const plugin_desc_t * da;
+ const plugin_desc_t * db;
+ da = (const plugin_desc_t *) a;
+ db = (const plugin_desc_t *) b;
+
+ return strcasecmp (da->name, db->name);
+}
+
+plugin_mgr_t *
+plugin_mgr_new (ui_t * ui)
+{
+ plugin_mgr_t * pm;
+
+ pm = g_malloc (sizeof (plugin_mgr_t));
+ pm->all_plugins = NULL;
+ pm->plugins = NULL;
+ pm->plugin_count = 0;
+
+ plugin_mgr_get_path_plugins (ui, pm);
+
+ if (!pm->all_plugins)
+ {
+ fprintf (stderr, "No LADSPA plugins were found!\n\nCheck your LADSPA_PATH environment variable.\n");
+ abort ();
+ }
+
+ pm->all_plugins = g_slist_sort (pm->all_plugins, plugin_mgr_sort);
+
+ return pm;
+}
+
+void
+plugin_mgr_destroy (plugin_mgr_t * plugin_mgr)
+{
+ GSList * list;
+
+ for (list = plugin_mgr->all_plugins; list; list = g_slist_next (list))
+ plugin_desc_destroy ((plugin_desc_t *) list->data);
+
+ g_slist_free (plugin_mgr->plugins);
+ g_slist_free (plugin_mgr->all_plugins);
+ free (plugin_mgr);
+}
+
+
+void
+plugin_mgr_set_plugins (plugin_mgr_t * plugin_mgr, unsigned long rack_channels)
+{
+ GSList * list;
+ plugin_desc_t * desc;
+
+ /* clear the current plugins */
+ g_slist_free (plugin_mgr->plugins);
+ plugin_mgr->plugins = NULL;
+
+ for (list = plugin_mgr->all_plugins; list; list = g_slist_next (list))
+ {
+ desc = (plugin_desc_t *) list->data;
+
+ if (plugin_desc_get_copies (desc, rack_channels) != 0)
+ plugin_mgr->plugins = g_slist_append (plugin_mgr->plugins, desc);
+ }
+}
+
+static plugin_desc_t *
+plugin_mgr_find_desc (plugin_mgr_t * plugin_mgr, GSList * plugins, unsigned long id)
+{
+ GSList * list;
+ plugin_desc_t * desc;
+
+ for (list = plugins; list; list = g_slist_next (list))
+ {
+ desc = (plugin_desc_t *) list->data;
+
+ if (desc->id == id)
+ return desc;
+ }
+
+ return NULL;
+}
+
+plugin_desc_t *
+plugin_mgr_get_desc (plugin_mgr_t * plugin_mgr, unsigned long id)
+{
+ return plugin_mgr_find_desc (plugin_mgr, plugin_mgr->plugins, id);
+}
+
+plugin_desc_t *
+plugin_mgr_get_any_desc (plugin_mgr_t * plugin_mgr, unsigned long id)
+{
+ return plugin_mgr_find_desc (plugin_mgr, plugin_mgr->all_plugins, id);
+}
+
+
+/* EOF */
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