1 files changed, 486 insertions, 0 deletions
diff --git a/libs/ardour/plugin_manager.cc b/libs/ardour/plugin_manager.cc
new file mode 100644
index 0000000000..e214e56ebc
--- /dev/null
+++ b/libs/ardour/plugin_manager.cc
@@ -0,0 +1,486 @@
+/*
+    Copyright (C) 2000-2004 Paul Davis 
+
+    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.
+
+    $Id$
+*/
+
+#include <sys/types.h>
+#include <cstdio>
+#include <lrdf.h>
+#include <dlfcn.h>
+
+#ifdef VST_SUPPORT
+#include <fst.h>
+#include <pbd/basename.h>
+#include <string.h>
+#endif
+
+#include <pbd/pathscanner.h>
+
+#include <ardour/ladspa.h>
+#include <ardour/session.h>
+#include <ardour/plugin_manager.h>
+#include <ardour/plugin.h>
+#include <ardour/ladspa_plugin.h>
+#include <ardour/vst_plugin.h>
+
+#include <pbd/error.h>
+#include <pbd/stl_delete.h>
+
+#include "i18n.h"
+
+using namespace ARDOUR;
+
+PluginManager* PluginManager::_manager = 0;
+
+PluginManager::PluginManager (AudioEngine& e)
+	: _engine (e)
+{
+	char* s;
+	string lrdf_path;
+
+	if ((s = getenv ("LADSPA_RDF_PATH"))){
+		lrdf_path = s;
+	}
+
+	if (lrdf_path.length() == 0) {
+		lrdf_path = "/usr/local/share/ladspa/rdf:/usr/share/ladspa/rdf";
+	}
+
+	add_lrdf_data(lrdf_path);
+	add_ladspa_presets();
+#ifdef VST_SUPPORT
+	if (Config->get_use_vst()) {
+		add_vst_presets();
+	}
+#endif /* VST_SUPPORT */
+
+	if ((s = getenv ("LADSPA_PATH"))) {
+		ladspa_path = s;
+	}
+
+	if ((s = getenv ("VST_PATH"))) {
+		vst_path = s;
+	} else if ((s = getenv ("VST_PLUGINS"))) {
+		vst_path = s;
+	}
+
+	refresh ();
+
+	if (_manager == 0) {
+		_manager = this;
+	}
+}
+
+void
+PluginManager::refresh ()
+{
+	ladspa_refresh ();
+#ifdef VST_SUPPORT
+	if (Config->get_use_vst()) {
+		vst_refresh ();
+	}
+#endif
+}
+
+void
+PluginManager::ladspa_refresh ()
+{
+	for (std::list<PluginInfo*>::iterator i = _ladspa_plugin_info.begin(); i != _ladspa_plugin_info.end(); ++i) {
+		delete *i;
+	}
+
+	_ladspa_plugin_info.clear ();
+
+	if (ladspa_path.length() == 0) {
+		ladspa_path = "/usr/local/lib/ladspa:/usr/lib/ladspa";
+	}
+
+	ladspa_discover_from_path (ladspa_path);
+}
+
+int
+PluginManager::add_ladspa_directory (string path)
+{
+	if (ladspa_discover_from_path (path) == 0) {
+		ladspa_path += ':';
+		ladspa_path += path;
+		return 0;
+	} 
+	return -1;
+}
+
+static bool ladspa_filter (const string& str, void *arg)
+{
+	/* Not a dotfile, has a prefix before a period, suffix is "so" */
+	
+	return str[0] != '.' && (str.length() > 3 && str.find (".so") == (str.length() - 3));
+}
+
+int
+PluginManager::ladspa_discover_from_path (string path)
+{
+	PathScanner scanner;
+	vector<string *> *plugin_objects;
+	vector<string *>::iterator x;
+	int ret = 0;
+
+	plugin_objects = scanner (ladspa_path, ladspa_filter, 0, true, true);
+
+	if (plugin_objects) {
+		for (x = plugin_objects->begin(); x != plugin_objects->end (); ++x) {
+			ladspa_discover (**x);
+		}
+	}
+
+	vector_delete (plugin_objects);
+	return ret;
+}
+
+static bool rdf_filter (const string &str, void *arg)
+{
+	return str[0] != '.' && 
+		   ((str.find(".rdf")  == (str.length() - 4)) ||
+            (str.find(".rdfs") == (str.length() - 5)) ||
+		    (str.find(".n3")   == (str.length() - 3)));
+}
+
+void
+PluginManager::add_ladspa_presets()
+{
+	add_presets ("ladspa");
+}
+
+void
+PluginManager::add_vst_presets()
+{
+	add_presets ("vst");
+}
+void
+PluginManager::add_presets(string domain)
+{
+
+	PathScanner scanner;
+	vector<string *> *presets;
+	vector<string *>::iterator x;
+
+	char* envvar;
+	if ((envvar = getenv ("HOME")) == 0) {
+		return;
+	}
+
+	string path = compose("%1/.%2/rdf", envvar, domain);
+	presets = scanner (path, rdf_filter, 0, true, true);
+
+	if (presets) {
+		for (x = presets->begin(); x != presets->end (); ++x) {
+			string file = "file:" + **x;
+			if (lrdf_read_file(file.c_str())) {
+				warning << compose(_("Could not parse rdf file: %1"), *x) << endmsg;
+			}
+		}
+	}
+
+	vector_delete (presets);
+}
+
+
+void
+PluginManager::add_lrdf_data (const string &path)
+{
+	PathScanner scanner;
+	vector<string *>* rdf_files;
+	vector<string *>::iterator x;
+	string uri;
+
+	rdf_files = scanner (path, rdf_filter, 0, true, true);
+
+	if (rdf_files) {
+		for (x = rdf_files->begin(); x != rdf_files->end (); ++x) {
+			uri = "file://" + **x;
+
+			if (lrdf_read_file(uri.c_str())) {
+				warning << "Could not parse rdf file: " << uri << endmsg;
+			}
+		}
+	}
+
+	vector_delete (rdf_files);
+}
+
+int 
+PluginManager::ladspa_discover (string path)
+{
+	PluginInfo *info;
+	void *module;
+	const LADSPA_Descriptor *descriptor;
+	LADSPA_Descriptor_Function dfunc;
+	const char *errstr;
+
+	if ((module = dlopen (path.c_str(), RTLD_NOW)) == 0) {
+		error << compose(_("LADSPA: cannot load module \"%1\" (%2)"), path, dlerror()) << endmsg;
+		return -1;
+	}
+
+	dfunc = (LADSPA_Descriptor_Function) dlsym (module, "ladspa_descriptor");
+
+	if ((errstr = dlerror()) != 0) {
+		error << compose(_("LADSPA: module \"%1\" has no descriptor function."), path) << endmsg;
+		error << errstr << endmsg;
+		dlclose (module);
+		return -1;
+	}
+
+	for (uint32_t i = 0; ; ++i) {
+		if ((descriptor = dfunc (i)) == 0) {
+			break;
+		}
+
+		info = new PluginInfo;
+		info->name = descriptor->Name;
+		info->category = get_ladspa_category(descriptor->UniqueID);
+		info->path = path;
+		info->index = i;
+		info->n_inputs = 0;
+		info->n_outputs = 0;
+		info->type = PluginInfo::LADSPA;
+		
+		for (uint32_t n=0; n < descriptor->PortCount; ++n) {
+			if ( LADSPA_IS_PORT_AUDIO (descriptor->PortDescriptors[n]) ) {
+				if ( LADSPA_IS_PORT_INPUT (descriptor->PortDescriptors[n]) ) {
+					info->n_inputs++;
+				}
+				else if ( LADSPA_IS_PORT_OUTPUT (descriptor->PortDescriptors[n]) ) {
+					info->n_outputs++;
+				}
+			}
+		}
+
+		_ladspa_plugin_info.push_back (info);
+	}
+
+// GDB WILL NOT LIKE YOU IF YOU DO THIS
+//	dlclose (module);
+
+	return 0;
+}
+
+Plugin *
+PluginManager::load (Session& session, PluginInfo *info)
+{
+	void *module;
+	Plugin *plugin = 0;
+
+	try {
+		if (info->type == PluginInfo::VST) {
+
+#ifdef VST_SUPPORT			
+			if (Config->get_use_vst()) {
+				FSTHandle* handle;
+				
+				if ((handle = fst_load (info->path.c_str())) == 0) {
+					error << compose(_("VST: cannot load module from \"%1\""), info->path) << endmsg;
+				} else {
+					plugin = new VSTPlugin (_engine, session, handle);
+				}
+			} else {
+				error << _("You asked ardour to not use any VST plugins") << endmsg;
+			}
+#else
+			error << _("This version of ardour has no support for VST plugins") << endmsg;
+			return 0;
+#endif			
+				
+		} else {
+
+			if ((module = dlopen (info->path.c_str(), RTLD_NOW)) == 0) {
+				error << compose(_("LADSPA: cannot load module from \"%1\""), info->path) << endmsg;
+				error << dlerror() << endmsg;
+			} else {
+				plugin = new LadspaPlugin (module, _engine, session, info->index, session.frame_rate());
+			}
+		}
+
+		plugin->set_info(*info);
+	}
+
+	catch (failed_constructor &err) {
+		plugin = 0;
+	}
+	
+	return plugin;
+}
+
+Plugin *
+ARDOUR::find_plugin(Session& session, string name, PluginInfo::Type type)
+{
+	PluginManager *mgr = PluginManager::the_manager();
+	list<PluginInfo *>::iterator i;
+	list<PluginInfo *>* plugs = 0;
+
+	switch (type) {
+	case PluginInfo::LADSPA:
+		plugs = &mgr->ladspa_plugin_info();
+		break;
+	case PluginInfo::VST:
+		plugs = &mgr->vst_plugin_info();
+		break;
+	}
+
+	for (i = plugs->begin(); i != plugs->end(); ++i) {
+		if ((*i)->name == name) {	
+			return mgr->load (session, *i);
+		}
+	}
+	
+	return 0;
+}
+
+string
+PluginManager::get_ladspa_category (uint32_t plugin_id)
+{
+	char buf[256];
+	lrdf_statement pattern;
+
+	snprintf(buf, sizeof(buf), "%s%" PRIu32, LADSPA_BASE, plugin_id);
+	pattern.subject = buf;
+	pattern.predicate = RDF_TYPE;
+	pattern.object = 0;
+	pattern.object_type = lrdf_uri;
+
+	lrdf_statement* matches1 = lrdf_matches (&pattern);
+
+	if (!matches1) {
+		return _("Unknown");
+	}
+
+	pattern.subject = matches1->object;
+	pattern.predicate = LADSPA_BASE "hasLabel";
+	pattern.object = 0;
+	pattern.object_type = lrdf_literal;
+
+	lrdf_statement* matches2 = lrdf_matches (&pattern);
+	lrdf_free_statements(matches1);
+
+	if (!matches2) {
+		return _("Unknown");
+	}
+
+	string label = matches2->object;
+	lrdf_free_statements(matches2);
+
+	return label;
+}
+
+#ifdef VST_SUPPORT
+
+void
+PluginManager::vst_refresh ()
+{
+	for (std::list<PluginInfo*>::iterator i = _vst_plugin_info.begin(); i != _vst_plugin_info.end(); ++i) {
+		delete *i;
+	}
+
+	_vst_plugin_info.clear ();
+
+	if (vst_path.length() == 0) {
+		vst_path = "/usr/local/lib/vst:/usr/lib/vst";
+	}
+
+	vst_discover_from_path (vst_path);
+}
+
+int
+PluginManager::add_vst_directory (string path)
+{
+	if (vst_discover_from_path (path) == 0) {
+		vst_path += ':';
+		vst_path += path;
+		return 0;
+	} 
+	return -1;
+}
+
+static bool vst_filter (const string& str, void *arg)
+{
+	/* Not a dotfile, has a prefix before a period, suffix is "dll" */
+	
+	return str[0] != '.' && (str.length() > 4 && str.find (".dll") == (str.length() - 4));
+}
+
+int
+PluginManager::vst_discover_from_path (string path)
+{
+	PathScanner scanner;
+	vector<string *> *plugin_objects;
+	vector<string *>::iterator x;
+	int ret = 0;
+
+	info << "detecting VST plugins along " << path << endmsg;
+
+	plugin_objects = scanner (vst_path, vst_filter, 0, true, true);
+
+	if (plugin_objects) {
+		for (x = plugin_objects->begin(); x != plugin_objects->end (); ++x) {
+			vst_discover (**x);
+		}
+	}
+
+	vector_delete (plugin_objects);
+	return ret;
+}
+
+int
+PluginManager::vst_discover (string path)
+{
+	FSTInfo* finfo;
+	PluginInfo* info;
+
+	if ((finfo = fst_get_info (const_cast<char *> (path.c_str()))) == 0) {
+		return -1;
+	}
+
+	if (!finfo->canProcessReplacing) {
+		warning << compose (_("VST plugin %1 does not support processReplacing, and so cannot be used in ardour at this time"),
+				    finfo->name)
+			<< endl;
+	}
+	
+	info = new PluginInfo;
+
+	/* what a goddam joke freeware VST is */
+
+	if (!strcasecmp ("The Unnamed plugin", finfo->name)) {
+		info->name = PBD::basename_nosuffix (path);
+	} else {
+		info->name = finfo->name;
+	}
+
+	info->category = "VST";
+	info->path = path;
+	info->index = 0;
+	info->n_inputs = finfo->numInputs;
+	info->n_outputs = finfo->numOutputs;
+	info->type = PluginInfo::VST;
+	
+	_vst_plugin_info.push_back (info);
+	fst_free_info (finfo);
+
+	return 0;
+}
+
+#endif