Qt: add stereowiden filter

modules/gui/qt/components/extended_panels.cpp

@@ -1408,6 +1408,25 @@ Spatializer::Spatializer( intf_thread_t *p_intf, QWidget *parent )
     build();
 }
 
+/**********************************************************************
+ * Spatializer
+ **********************************************************************/
+
+StereoWidener::StereoWidener( intf_thread_t *p_intf, QWidget *parent )
+    : AudioFilterControlWidget( p_intf, parent, "stereo_widen" )
+{
+    i_smallfont = -1;
+    const FilterSliderData::slider_data_t a[4] =
+    {
+        { "stereowiden-delay",     N_("Delay time"),    "ms", 1.0, 100,  20, 1.0, 1.0 },
+        { "stereowiden-feedback",  N_("Feedback gain"), "%",  0.0, 0.9, 0.3, 0.1, 1.0 },
+        { "stereowiden-crossfeed", N_("Crossfeed"),     "%",  0.0, 0.8, 0.3, 0.1, 1.0 },
+        { "stereowiden-dry-mix",   N_("Dry mix"),       "%",  0.0, 1.0, 0.8, 0.1, 1.0 },
+    };
+    for( int i=0; i<4 ;i++ ) controls.append( a[i] );
+    build();
+}
+
 #include <QToolButton>
 #include <QGridLayout>
 

modules/gui/qt/components/extended_panels.hpp

@@ -204,6 +204,14 @@ public:
     Spatializer( intf_thread_t *, QWidget * );
 };
 
+class StereoWidener: public AudioFilterControlWidget
+{
+    Q_OBJECT
+
+public:
+    StereoWidener( intf_thread_t *, QWidget * );
+};
+
 class SyncWidget : public QWidget
 {
     Q_OBJECT

modules/gui/qt/dialogs/extended.cpp

@@ -70,6 +70,10 @@ ExtendedDialog::ExtendedDialog( intf_thread_t *_p_intf )
     audioTab->addTab( spatial, qtr( "Spatializer" ) );
     audioLayout->addWidget( audioTab );
 
+    StereoWidener *stereowiden = new StereoWidener( p_intf, audioTab );
+    audioTab->addTab( stereowiden, qtr( "Stereo Widener" ) );
+    audioLayout->addWidget( audioTab );
+
     mainTabW->insertTab( AUDIO_TAB, audioWidget, qtr( "Audio Effects" ) );
 
     /* Video Effects */