don't special case lua processors, use plugin-manager

libs/ardour/ardour/luaproc.h

@@ -163,7 +163,10 @@ class LIBARDOUR_API LuaPluginInfo : public PluginInfo
 	PluginPtr load (Session& session);
 	std::vector<Plugin::PresetRecord> get_presets (bool user_only) const;
 
-	bool is_instrument () const { return _is_instrument ; }
+	bool in_category (const std::string &c) const {
+		return (category == c);
+	}
+	bool is_instrument () const { return _is_instrument; }
 	bool reconfigurable_io() const { return true; }
 
 	bool _is_instrument;

libs/ardour/ardour/luascripting.h

@@ -43,10 +43,11 @@ class LIBARDOUR_API LuaScriptInfo {
 	static std::string type2str (const ScriptType t);
 	static ScriptType str2type (const std::string& str);
 
-	LuaScriptInfo (ScriptType t, const std::string &n, const std::string &p)
+	LuaScriptInfo (ScriptType t, const std::string &n, const std::string &p, const std::string &uid)
 	: type (t)
 	, name (n)
 	, path (p)
+	, unique_id (uid)
 	{ }
 
 	virtual ~LuaScriptInfo () { }
@@ -54,6 +55,7 @@ class LIBARDOUR_API LuaScriptInfo {
 	ScriptType type;
 	std::string name;
 	std::string path;
+	std::string unique_id;
 
 	std::string author;
 	std::string license;

libs/ardour/ardour/plugin_manager.h

@@ -50,6 +50,7 @@ class LIBARDOUR_API PluginManager : public boost::noncopyable {
 	ARDOUR::PluginInfoList &ladspa_plugin_info ();
 	ARDOUR::PluginInfoList &lv2_plugin_info ();
 	ARDOUR::PluginInfoList &au_plugin_info ();
+	ARDOUR::PluginInfoList &lua_plugin_info ();
 
 	void refresh (bool cache_only = false);
 	void cancel_plugin_scan();
@@ -112,6 +113,7 @@ class LIBARDOUR_API PluginManager : public boost::noncopyable {
 	ARDOUR::PluginInfoList* _ladspa_plugin_info;
 	ARDOUR::PluginInfoList* _lv2_plugin_info;
 	ARDOUR::PluginInfoList* _au_plugin_info;
+	ARDOUR::PluginInfoList* _lua_plugin_info;
 
 	std::map<uint32_t, std::string> rdf_type;
 
@@ -122,6 +124,8 @@ class LIBARDOUR_API PluginManager : public boost::noncopyable {
 	bool _cancel_timeout;
 
 	void ladspa_refresh ();
+	void lua_refresh ();
+	void lua_refresh_cb ();
 	void windows_vst_refresh (bool cache_only = false);
 	void lxvst_refresh (bool cache_only = false);
 
@@ -146,6 +150,7 @@ class LIBARDOUR_API PluginManager : public boost::noncopyable {
 	std::string get_ladspa_category (uint32_t id);
 	std::vector<uint32_t> ladspa_plugin_whitelist;
 
+	PBD::ScopedConnection lua_refresh_connection;
 	Glib::Threads::Mutex _lock;
 
 	static PluginManager* _instance; // singleton

libs/ardour/lua_api.cc

@@ -106,6 +106,7 @@ ARDOUR::LuaAPI::new_plugin_info (const string& name, ARDOUR::PluginType type)
 	PluginManager& manager = PluginManager::instance();
 	PluginInfoList all_plugs;
 	all_plugs.insert(all_plugs.end(), manager.ladspa_plugin_info().begin(), manager.ladspa_plugin_info().end());
+	all_plugs.insert(all_plugs.end(), manager.lua_plugin_info().begin(), manager.lua_plugin_info().end());
 #ifdef WINDOWS_VST_SUPPORT
 	all_plugs.insert(all_plugs.end(), manager.windows_vst_plugin_info().begin(), manager.windows_vst_plugin_info().end());
 #endif

libs/ardour/luaproc.cc

@@ -1016,7 +1016,7 @@ LuaPluginInfo::LuaPluginInfo (LuaScriptInfoPtr lsi) {
 	name = lsi->name;
 	creator = lsi->author;
 	category = lsi->category;
-	unique_id = "luascript"; // the interpreter is not unique.
+	unique_id = lsi->unique_id;
 
 	n_inputs.set (DataType::AUDIO, 1);
 	n_outputs.set (DataType::AUDIO, 1);

libs/ardour/luascripting.cc

@@ -33,6 +33,7 @@
 #include "LuaBridge/LuaBridge.h"
 
 #include "i18n.h"
+#include "sha1.c"
 
 using namespace ARDOUR;
 using namespace PBD;
@@ -186,6 +187,7 @@ LuaScripting::scan_script (const std::string &fn, const std::string &sc)
 			"function ardour (entry)"
 			"  ardourluainfo['type'] = assert(entry['type'])"
 			"  ardourluainfo['name'] = assert(entry['name'])"
+			"  ardourluainfo['category'] = entry['category'] or 'Unknown'"
 			"  ardourluainfo['author'] = entry['author'] or 'Unknown'"
 			"  ardourluainfo['license'] = entry['license'] or ''"
 			"  ardourluainfo['description'] = entry['description'] or ''"
@@ -236,7 +238,24 @@ LuaScripting::scan_script (const std::string &fn, const std::string &sc)
 		return LuaScriptInfoPtr();
 	}
 
-	LuaScriptInfoPtr lsi (new LuaScriptInfo (type, name, fn));
+	char hash[41];
+	Sha1Digest s;
+	sha1_init (&s);
+
+	if (fn.empty()) {
+		sha1_write (&s, (const uint8_t *) sc.c_str(), sc.size ());
+	} else {
+		try {
+			std::string script = Glib::file_get_contents (fn);
+			sha1_write (&s, (const uint8_t *) script.c_str(), script.size ());
+		} catch (Glib::FileError err) {
+			return LuaScriptInfoPtr();
+		}
+	}
+	sha1_result_hash (&s, hash);
+
+
+	LuaScriptInfoPtr lsi (new LuaScriptInfo (type, name, fn, hash));
 
 	for (luabridge::Iterator i(nfo); !i.isNil (); ++i) {
 		if (!i.key().isString() || !i.value().isString()) {
@@ -248,8 +267,8 @@ LuaScripting::scan_script (const std::string &fn, const std::string &sc)
 		if (key == "author") { lsi->author = val; }
 		if (key == "license") { lsi->license = val; }
 		if (key == "description") { lsi->description = val; }
+		if (key == "category") { lsi->category = val; }
 	}
-
 	return lsi;
 }
 

libs/ardour/plugin.cc

@@ -164,10 +164,7 @@ ARDOUR::find_plugin(Session& session, string identifier, PluginType type)
 
 	switch (type) {
 	case ARDOUR::Lua:
-		{
-			PluginPtr plugin (new LuaProc (session.engine(), session, ""));
-			return plugin;
-		}
+		plugs = mgr.lua_plugin_info();
 		break;
 
 	case ARDOUR::LADSPA:

libs/ardour/plugin_insert.cc

@@ -150,7 +150,6 @@ PluginInsert::set_count (uint32_t num)
 void
 PluginInsert::set_sinks (const ChanCount& c)
 {
-	bool changed = (_custom_sinks != c) && _custom_cfg;
 	_custom_sinks = c;
 	/* no signal, change will only be visible after re-config */
 }
@@ -2117,6 +2116,19 @@ PluginInsert::set_state(const XMLNode& node, int version)
 	}
 #endif
 
+	if (plugin == 0 && type == ARDOUR::Lua) {
+		/* unique ID (sha1 of script) was not found,
+		 * load the plugin from the serialized version in the
+		 * session-file instead.
+		 */
+		boost::shared_ptr<LuaProc> lp (new LuaProc (_session.engine(), _session, ""));
+		XMLNode *ls = node.child (lp->state_node_name().c_str());
+		if (ls && lp) {
+			lp->set_script_from_state (*ls);
+			plugin = lp;
+		}
+	}
+
 	if (plugin == 0) {
 		error << string_compose(
 			_("Found a reference to a plugin (\"%1\") that is unknown.\n"
@@ -2126,15 +2138,6 @@ PluginInsert::set_state(const XMLNode& node, int version)
 		return -1;
 	}
 
-	if (type == ARDOUR::Lua) {
-		XMLNode *ls = node.child (plugin->state_node_name().c_str());
-		// we need to load the script to set the name and parameters.
-		boost::shared_ptr<LuaProc> lp = boost::dynamic_pointer_cast<LuaProc>(plugin);
-		if (ls && lp) {
-			lp->set_script_from_state (*ls);
-		}
-	}
-
 	// The name of the PluginInsert comes from the plugin, nothing else
 	_name = plugin->get_info()->name;
 

libs/ardour/plugin_manager.cc

@@ -67,6 +67,8 @@
 #include "ardour/filesystem_paths.h"
 #include "ardour/ladspa.h"
 #include "ardour/ladspa_plugin.h"
+#include "ardour/luascripting.h"
+#include "ardour/luaproc.h"
 #include "ardour/plugin.h"
 #include "ardour/plugin_manager.h"
 #include "ardour/rc_configuration.h"
@@ -119,6 +121,7 @@ PluginManager::PluginManager ()
 	, _ladspa_plugin_info(0)
 	, _lv2_plugin_info(0)
 	, _au_plugin_info(0)
+	, _lua_plugin_info(0)
 	, _cancel_scan(false)
 	, _cancel_timeout(false)
 {
@@ -215,6 +218,8 @@ PluginManager::PluginManager ()
 	}
 
 	BootMessage (_("Discovering Plugins"));
+
+	LuaScripting::instance().scripts_changed.connect_same_thread (lua_refresh_connection, boost::bind (&PluginManager::lua_refresh_cb, this));
 }
 
 
@@ -227,6 +232,7 @@ PluginManager::~PluginManager()
 		delete _ladspa_plugin_info;
 		delete _lv2_plugin_info;
 		delete _au_plugin_info;
+		delete _lua_plugin_info;
 	}
 }
 
@@ -244,6 +250,8 @@ PluginManager::refresh (bool cache_only)
 
 	BootMessage (_("Scanning LADSPA Plugins"));
 	ladspa_refresh ();
+	BootMessage (_("Scanning Lua DSP Processors"));
+	lua_refresh ();
 #ifdef LV2_SUPPORT
 	BootMessage (_("Scanning LV2 Plugins"));
 	lv2_refresh ();
@@ -452,6 +460,32 @@ PluginManager::clear_au_blacklist ()
 #endif
 }
 
+void
+PluginManager::lua_refresh ()
+{
+	if (_lua_plugin_info) {
+		_lua_plugin_info->clear ();
+	} else {
+		_lua_plugin_info = new ARDOUR::PluginInfoList ();
+	}
+	ARDOUR::LuaScriptList & _scripts (LuaScripting::instance ().scripts (LuaScriptInfo::DSP));
+	for (LuaScriptList::const_iterator s = _scripts.begin(); s != _scripts.end(); ++s) {
+		LuaPluginInfoPtr lpi (new LuaPluginInfo(*s));
+		_lua_plugin_info->push_back (lpi);
+	}
+}
+
+void
+PluginManager::lua_refresh_cb ()
+{
+	Glib::Threads::Mutex::Lock lm (_lock, Glib::Threads::TRY_LOCK);
+	if (!lm.locked()) {
+		return;
+	}
+	lua_refresh ();
+	PluginListChanged (); /* EMIT SIGNAL */
+}
+
 void
 PluginManager::ladspa_refresh ()
 {
@@ -1104,8 +1138,7 @@ PluginManager::save_statuses ()
 			ofs << "LXVST";
 			break;
 		case Lua:
-			assert (0);
-			continue;
+			ofs << "Lua";
 			break;
 		}
 
@@ -1193,6 +1226,8 @@ PluginManager::load_statuses ()
 			type = Windows_VST;
 		} else if (stype == "LXVST") {
 			type = LXVST;
+		} else if (stype == "Lua") {
+			type = Lua;
 		} else {
 			error << string_compose (_("unknown plugin type \"%1\" - ignored"), stype)
 			      << endmsg;
@@ -1270,3 +1305,10 @@ PluginManager::au_plugin_info ()
 #endif
 	return _empty_plugin_info;
 }
+
+ARDOUR::PluginInfoList&
+PluginManager::lua_plugin_info ()
+{
+	assert(_lua_plugin_info);
+	return *_lua_plugin_info;
+}