Add support for experimental add-on filters

src/CMakeLists.txt

@@ -10,6 +10,8 @@ add_executable(shotcut WIN32 MACOSX_BUNDLE
   commands/subtitlecommands.cpp commands/subtitlecommands.h
   commands/timelinecommands.cpp commands/timelinecommands.h
   commands/undohelper.cpp commands/undohelper.h
+  controllers/addonmetadataparser.cpp controllers/addonmetadataparser.h
+  controllers/addonqmlgenerator.cpp controllers/addonqmlgenerator.h
   controllers/filtercontroller.cpp controllers/filtercontroller.h
   controllers/scopecontroller.cpp controllers/scopecontroller.h
   database.cpp database.h
@@ -18,6 +20,8 @@ add_executable(shotcut WIN32 MACOSX_BUNDLE
   dialogs/addencodepresetdialog.ui
   dialogs/alignaudiodialog.cpp dialogs/alignaudiodialog.h
   dialogs/alignmentarray.cpp dialogs/alignmentarray.h
+  dialogs/addonfiltersdialog.cpp dialogs/addonfiltersdialog.h
+  dialogs/addonmetadatahelpdialog.cpp dialogs/addonmetadatahelpdialog.h
   dialogs/bitratedialog.h dialogs/bitratedialog.cpp
   dialogs/customprofiledialog.cpp dialogs/customprofiledialog.h
   dialogs/customprofiledialog.ui
@@ -85,6 +89,7 @@ add_executable(shotcut WIN32 MACOSX_BUNDLE
   mltcontroller.cpp mltcontroller.h
   mltxmlchecker.cpp mltxmlchecker.h
   models/actionsmodel.cpp models/actionsmodel.h
+  models/addonservicemodel.cpp models/addonservicemodel.h
   models/alignclipsmodel.cpp models/alignclipsmodel.h
   models/attachedfiltersmodel.cpp models/attachedfiltersmodel.h
   models/audiolevelstask.cpp models/audiolevelstask.h

src/controllers/addonmetadataparser.cpp

@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2026 Meltytech, LLC
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "addonmetadataparser.h"
+
+static bool parseYesNoBool(const char *value)
+{
+    if (!value)
+        return false;
+    const QString text = QString::fromUtf8(value).trimmed().toLower();
+    return text == QStringLiteral("yes") || text == QStringLiteral("true")
+           || text == QStringLiteral("1");
+}
+
+AddOnFilterDescriptor AddOnMetadataParser::parse(const QString &service,
+                                                 Mlt::Properties *mltMetadata)
+{
+    AddOnFilterDescriptor descriptor;
+    descriptor.service = service;
+    descriptor.title = service;
+
+    if (!mltMetadata || !mltMetadata->is_valid())
+        return descriptor;
+
+    descriptor.title = QString::fromUtf8(mltMetadata->get("title"));
+    if (descriptor.title.isEmpty())
+        descriptor.title = service;
+
+    descriptor.description = QString::fromUtf8(mltMetadata->get("description"));
+
+    Mlt::Properties tags(mltMetadata->get_data("tags"));
+    if (tags.is_valid()) {
+        for (int i = 0; i < tags.count(); ++i) {
+            if (!qstricmp(tags.get(i), "Audio")) {
+                descriptor.isAudio = true;
+                break;
+            }
+        }
+    }
+
+    Mlt::Properties parameters(mltMetadata->get_data("parameters"));
+    if (!parameters.is_valid())
+        return descriptor;
+
+    for (int i = 0; i < parameters.count(); ++i) {
+        const char *rawName = parameters.get_name(i);
+        Mlt::Properties parameter(rawName ? parameters.get_data(rawName) : nullptr);
+
+        AddOnParameterDescriptor out;
+        if (parameter.is_valid()) {
+            out.title = QString::fromUtf8(parameter.get("title"));
+            out.defaultValue = QString::fromUtf8(parameter.get("default"));
+            out.type = QString::fromUtf8(parameter.get("type"));
+            out.isReadOnly = parseYesNoBool(parameter.get("readonly"));
+            out.supportsKeyframes = parseYesNoBool(parameter.get("animation"));
+            out.unit = QString::fromUtf8(parameter.get("unit"));
+            out.minimum = QString::fromUtf8(parameter.get("minimum"));
+            out.maximum = QString::fromUtf8(parameter.get("maximum"));
+            out.description = QString::fromUtf8(parameter.get("description"));
+            out.name = QString::fromUtf8(parameter.get("identifier"));
+
+            Mlt::Properties values(parameter.get_data("values"));
+            if (values.is_valid()) {
+                for (int v = 0; v < values.count(); ++v) {
+                    QString option = QString::fromUtf8(values.get(v));
+                    if (option.isEmpty()) {
+                        const char *optionName = values.get_name(v);
+                        if (optionName)
+                            option = QString::fromUtf8(optionName);
+                    }
+                    if (!option.isEmpty() && !out.values.contains(option))
+                        out.values << option;
+                }
+            }
+        }
+
+        if (out.name.isEmpty() && rawName)
+            out.name = QString::fromUtf8(rawName);
+
+        descriptor.parameters.push_back(out);
+    }
+
+    return descriptor;
+}

src/controllers/addonmetadataparser.h

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2026 Meltytech, LLC
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ADDONMETADATAPARSER_H
+#define ADDONMETADATAPARSER_H
+
+#include <MltProperties.h>
+#include <QList>
+#include <QString>
+
+struct AddOnParameterDescriptor
+{
+    QString name;
+    QString title;
+    QString type;
+    bool isReadOnly = false;
+    bool supportsKeyframes = false;
+    QStringList values;
+    QString defaultValue;
+    QString unit;
+    QString minimum;
+    QString maximum;
+    QString description;
+};
+
+struct AddOnFilterDescriptor
+{
+    QString service;
+    QString title;
+    QString description;
+    bool isAudio = false;
+    QList<AddOnParameterDescriptor> parameters;
+};
+
+class AddOnMetadataParser
+{
+public:
+    static AddOnFilterDescriptor parse(const QString &service, Mlt::Properties *mltMetadata);
+};
+
+#endif // ADDONMETADATAPARSER_H