start a dedicated ARDOUR lua function collection

libs/ardour/ardour/lua_api.h

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2016 Robin Gareus <robin@gareus.org>
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
+#ifndef _ardour_lua_api_h_
+#define _ardour_lua_api_h_
+
+#include <string>
+#include <boost/shared_ptr.hpp>
+
+#include "ardour/libardour_visibility.h"
+
+#include "ardour/processor.h"
+#include "ardour/session.h"
+
+namespace ARDOUR { namespace LuaAPI {
+
+	boost::shared_ptr<ARDOUR::Processor> new_luaproc (ARDOUR::Session *s, const std::string&);
+
+} } /* namespace */
+
+#endif // _ardour_lua_api_h_

libs/ardour/lua_api.cc

@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2016 Robin Gareus <robin@gareus.org>
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
+#include <cstring>
+
+#include "pbd/error.h"
+#include "pbd/compose.h"
+
+#include "ardour/lua_api.h"
+#include "ardour/luaproc.h"
+#include "ardour/luascripting.h"
+#include "ardour/plugin.h"
+#include "ardour/plugin_insert.h"
+
+#include "i18n.h"
+
+using namespace ARDOUR;
+using namespace PBD;
+using namespace std;
+
+boost::shared_ptr<Processor>
+ARDOUR::LuaAPI::new_luaproc (Session *s, const string& name)
+{
+	if (!s) {
+		return boost::shared_ptr<Processor> (0);
+	}
+
+	LuaScriptInfoPtr spi;
+	ARDOUR::LuaScriptList & _scripts (LuaScripting::instance ().scripts (LuaScriptInfo::DSP));
+	for (LuaScriptList::const_iterator s = _scripts.begin(); s != _scripts.end(); ++s) {
+		if (name == (*s)->name) {
+			spi = *s;
+			break;
+		}
+	}
+
+	if (!spi) {
+		warning << _("Script with given name was not found\n");
+		return boost::shared_ptr<Processor> (0);
+	}
+
+	PluginPtr p;
+	try {
+		LuaPluginInfoPtr lpi (new LuaPluginInfo(spi));
+		p = (lpi->load (*s));
+	} catch (...) {
+		warning << _("Failed to instantiate Lua Processor\n");
+		return boost::shared_ptr<Processor> (0);
+	}
+
+	return boost::shared_ptr<Processor> (new PluginInsert (*s, p));
+}

libs/ardour/luabindings.cc

@@ -29,6 +29,7 @@
 #include "ardour/chan_mapping.h"
 #include "ardour/dB.h"
 #include "ardour/dsp_filter.h"
+#include "ardour/lua_api.h"
 #include "ardour/luabindings.h"
 #include "ardour/meter.h"
 #include "ardour/midi_track.h"
@@ -147,6 +148,12 @@ LuaBindings::common (lua_State* L)
 		.addVoidConstructor ()
 		.endClass ()
 
+		.beginNamespace ("Route")
+		.beginClass <Route::ProcessorStreams> ("ProcessorStreams")
+		.addVoidConstructor ()
+		.endClass ()
+		.endNamespace ()
+
 		.beginNamespace ("Properties")
 		// templated class definitions
 		.beginClass <PBD::PropertyDescriptor<bool> > ("BoolProperty").endClass ()
@@ -186,6 +193,7 @@ LuaBindings::common (lua_State* L)
 		.addFunction ("active", &Route::active)
 		.addFunction ("set_active", &Route::set_active)
 		.addFunction ("nth_plugin", &Route::nth_plugin)
+		.addFunction ("add_processor_by_index", &Route::add_processor_by_index)
 		.endClass ()
 
 		.deriveWSPtrClass <Track, Route> ("Track")
@@ -501,6 +509,10 @@ LuaBindings::common (lua_State* L)
 
 		.endNamespace () // END Session enums
 
+		.beginNamespace ("LuaAPI")
+		.addFunction ("new_luaproc", ARDOUR::LuaAPI::new_luaproc)
+		.endNamespace ()
+
 		.endNamespace ();// END ARDOUR
 }
 

libs/ardour/wscript

@@ -112,6 +112,7 @@ libardour_sources = [
         'location_importer.cc',
         'ltc_file_reader.cc',
         'ltc_slave.cc',
+        'lua_api.cc',
         'luabindings.cc',
         'luaproc.cc',
         'luascripting.cc',