Added a new class to easily expose the JSON metadata of supported effects in libopenshot. Fixed some bugs related to metadata, and a few bugs in the Mask effect (if initialized without a reader).

src/EffectInfo.cpp

@@ -0,0 +1,56 @@
+/**
+ * @file
+ * @brief Source file for EffectInfo class
+ * @author Jonathan Thomas <jonathan@openshot.org>
+ *
+ * @section LICENSE
+ *
+ * Copyright (c) 2008-2014 OpenShot Studios, LLC
+ * <http://www.openshotstudios.com/>. This file is part of
+ * OpenShot Library (libopenshot), an open-source project dedicated to
+ * delivering high quality video editing and animation solutions to the
+ * world. For more information visit <http://www.openshot.org/>.
+ *
+ * OpenShot Library (libopenshot) is free software: you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * OpenShot Library (libopenshot) 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "../include/EffectInfo.h"
+
+
+using namespace openshot;
+
+
+// Generate JSON string of this object
+string EffectInfo::Json() {
+
+	// Return formatted string
+	return JsonValue().toStyledString();
+}
+
+// Generate Json::JsonValue for this object
+Json::Value EffectInfo::JsonValue() {
+
+	// Create root json object
+	Json::Value root;
+
+	// Append info JSON from each supported effect
+	root.append(ChromaKey().JsonInfo());
+	root.append(Deinterlace().JsonInfo());
+	root.append(Mask().JsonInfo());
+	root.append(Negate().JsonInfo());
+
+	// return JsonValue
+	return root;
+
+}