Add v4l2 section in extended pannel. The code isn't v4l2 specific at all so it...

Add v4l2 section in extended pannel. The code isn't v4l2 specific at all so it could be adapted for other modules (as long as those define the "controls" variables with a list of controls that can be changed at runtime).

modules/gui/qt4/Modules.am

@@ -45,6 +45,7 @@ nodist_SOURCES_qt4 = \
 		util/customwidgets.moc.cpp \
 		resources.cpp \
 		ui/equalizer.h \
+		ui/v4l2.h \
 		ui/video_effects.h \
 		ui/open_file.h \
 		ui/open_disk.h \
@@ -149,6 +150,7 @@ noinst_HEADERS = \
 EXTRA_DIST += \
 	res.qrc \
 	ui/equalizer.ui \
+	ui/v4l2.ui \
 	ui/video_effects.ui \
 	ui/open_file.ui \
 	ui/open_disk.ui \

modules/gui/qt4/components/extended_panels.cpp

@@ -28,6 +28,7 @@
 #include <QFont>
 #include <QGridLayout>
 #include <QSignalMapper>
+#include <QComboBox>
 
 #include "components/extended_panels.hpp"
 #include "dialogs/preferences.hpp"
@@ -556,6 +557,188 @@ void ExtVideo::gotoConf( QObject* src )
 }
 #endif
 
+/**********************************************************************
+ * v4l2 controls
+ **********************************************************************/
+
+ExtV4l2::ExtV4l2( intf_thread_t *_p_intf, QWidget *_parent )
+    : QWidget( _parent ), p_intf( _p_intf )
+{
+    ui.setupUi( this );
+
+    BUTTONACT( ui.refresh, Refresh() );
+
+    layout = new QVBoxLayout;
+    ui.vboxLayout->addLayout( layout );
+
+    help = new QLabel( qtr( "No v4l2 instance found. Press the refresh button to try again." ) );
+    layout->addWidget( help );
+}
+
+ExtV4l2::~ExtV4l2()
+{
+    delete help;
+    delete layout;
+}
+
+void ExtV4l2::Refresh( void )
+{
+    vlc_object_t *p_obj = (vlc_object_t*)vlc_object_find_name( p_intf, "v4l2", FIND_ANYWHERE );
+    help->hide();
+    if( p_obj )
+    {
+        msg_Dbg( p_intf, "Found v4l2 instance" );
+        vlc_value_t val, text, name;
+        int i_ret = var_Change( p_obj, "controls", VLC_VAR_GETCHOICES,
+                                &val, &text );
+        if( i_ret < 0 )
+        {
+            msg_Err( p_intf, "Oops" );
+            vlc_object_release( p_obj );
+            return;
+        }
+        for( int i = 0; i < val.p_list->i_count; i++ )
+        {
+            const char *psz_var = text.p_list->p_values[i].psz_string;
+            var_Change( p_obj, psz_var, VLC_VAR_GETTEXT, &name, NULL );
+            const char *psz_label = name.psz_string;
+            msg_Dbg( p_intf, "v4l2 control \"%x\": %s (%s)",
+                     val.p_list->p_values[i].i_int, psz_var, name.psz_string );
+
+            int i_type = var_Type( p_obj, psz_var );
+            switch( i_type & VLC_VAR_TYPE )
+            {
+                case VLC_VAR_INTEGER:
+                {
+                    QLabel *label = new QLabel( psz_label );
+                    QHBoxLayout *hlayout = new QHBoxLayout;
+                    hlayout->addWidget( label );
+                    int i_val = var_GetInteger( p_obj, psz_var );
+                    if( i_type & VLC_VAR_HASCHOICE )
+                    {
+                        QComboBox *combobox = new QComboBox;
+                        combobox->setObjectName( psz_var );
+
+                        vlc_value_t val2, text2;
+                        var_Change( p_obj, psz_var, VLC_VAR_GETCHOICES,
+                                    &val2, &text2 );
+                        for( int j = 0; j < val2.p_list->i_count; j++ )
+                        {
+                            combobox->addItem(
+                                       text2.p_list->p_values[j].psz_string,
+                                       val2.p_list->p_values[j].i_int );
+                            if( i_val == val2.p_list->p_values[j].i_int )
+                                combobox->setCurrentIndex( j );
+                        }
+                        var_Change( p_obj, psz_var, VLC_VAR_FREELIST,
+                                    &val2, &text2 );
+
+                        CONNECT( combobox, currentIndexChanged( int ), this,
+                                 ValueChange( int ) );
+                        hlayout->addWidget( combobox );
+                    }
+                    else
+                    {
+                        QSlider *slider = new QSlider;
+                        slider->setObjectName( psz_var );
+                        slider->setOrientation( Qt::Horizontal );
+                        vlc_value_t val2;
+                        var_Change( p_obj, psz_var, VLC_VAR_GETMIN,
+                                    &val2, NULL );
+                        slider->setMinimum( val2.i_int );
+                        var_Change( p_obj, psz_var, VLC_VAR_GETMAX,
+                                    &val2, NULL );
+                        slider->setMaximum( val2.i_int );
+                        var_Change( p_obj, psz_var, VLC_VAR_GETSTEP,
+                                    &val2, NULL );
+                        slider->setSingleStep( val2.i_int );
+                        slider->setValue( i_val );
+
+                        CONNECT( slider, valueChanged( int ), this,
+                                 ValueChange( int ) );
+                        hlayout->addWidget( slider );
+                    }
+                    layout->addLayout( hlayout );
+                    break;
+                }
+                case VLC_VAR_BOOL:
+                {
+                    QRadioButton *button = new QRadioButton( psz_label );
+                    button->setObjectName( psz_var );
+                    button->setChecked( var_GetBool( p_obj, psz_var ) );
+
+                    CONNECT( button, clicked( bool ), this,
+                             ValueChange( bool ) );
+                    layout->addWidget( button );
+                    break;
+                }
+                case VLC_VAR_VOID:
+                {
+                    QPushButton *button = new QPushButton( psz_label );
+                    button->setObjectName( psz_var );
+
+                    CONNECT( button, clicked( bool ), this,
+                             ValueChange( bool ) );
+                    layout->addWidget( button );
+                    break;
+                }
+                default:
+                    msg_Warn( p_intf, "Unhandled var type for %s", psz_var );
+                    break;
+            }
+            free( name.psz_string );
+        }
+        var_Change( p_obj, "controls", VLC_VAR_FREELIST, &val, &text );
+        vlc_object_release( p_obj );
+    }
+    else
+    {
+        msg_Dbg( p_intf, "Couldn't find v4l2 instance" );
+        help->show();
+    }
+
+}
+
+void ExtV4l2::ValueChange( bool value )
+{
+    ValueChange( (int)value );
+}
+
+void ExtV4l2::ValueChange( int value )
+{
+    QObject *s = sender();
+    vlc_object_t *p_obj = (vlc_object_t*)vlc_object_find_name( p_intf, "v4l2", FIND_ANYWHERE );
+    if( p_obj )
+    {
+        char *psz_var = strdup( s->objectName().toStdString().c_str() );
+        int i_type = var_Type( p_obj, psz_var );
+        switch( i_type & VLC_VAR_TYPE )
+        {
+            case VLC_VAR_INTEGER:
+                if( i_type & VLC_VAR_HASCHOICE )
+                {
+                    QComboBox *combobox = qobject_cast<QComboBox*>( s );
+                    value = combobox->itemData( value ).toInt();
+                }
+                var_SetInteger( p_obj, psz_var, value );
+                break;
+            case VLC_VAR_BOOL:
+                var_SetBool( p_obj, psz_var, value );
+                break;
+            case VLC_VAR_VOID:
+                var_SetVoid( p_obj, psz_var );
+                break;
+        }
+        free( psz_var );
+        vlc_object_release( p_obj );
+    }
+    else
+    {
+        msg_Warn( p_intf, "Oops, v4l2 object isn't available anymore" );
+        Refresh();
+    }
+}
+
 /**********************************************************************
  * Equalizer
  **********************************************************************/

modules/gui/qt4/components/extended_panels.hpp

@@ -29,6 +29,7 @@
 
 #include "ui/equalizer.h"
 #include "ui/video_effects.h"
+#include "ui/v4l2.h"
 
 #define BANDS 10
 #define NUM_SP_CTRL 5
@@ -54,6 +55,25 @@ private slots:
     void updateFilterOptions();
 };
 
+class ExtV4l2 : public QWidget
+{
+    Q_OBJECT
+public:
+    ExtV4l2( intf_thread_t *, QWidget * );
+    virtual ~ExtV4l2();
+
+private:
+    intf_thread_t *p_intf;
+    Ui::ExtV4l2Widget ui;
+    QVBoxLayout *layout;
+    QLabel *help;
+
+private slots:
+    void Refresh( void );
+    void ValueChange( int value );
+    void ValueChange( bool value );
+};
+
 class Equalizer: public QWidget
 {
     Q_OBJECT

modules/gui/qt4/dialogs/extended.cpp

@@ -58,6 +58,12 @@ ExtendedDialog::ExtendedDialog( intf_thread_t *_p_intf ): QVLCFrame( _p_intf )
     ExtVideo *videoEffect = new ExtVideo( p_intf, this );
     mainTab->addTab( videoEffect, qtr( "Video Adjustments and Effects" ) );
 
+    if( module_Exists( p_intf, "v4l2" ) )
+    {
+        ExtV4l2 *v4l2 = new ExtV4l2( p_intf, this );
+        mainTab->addTab( v4l2, qtr( "v4l2 controls" ) );
+    }
+
     layout->addWidget( mainTab, 0, 0, 1, 5 );
 
     QPushButton *closeButton = new QPushButton( qtr( "Close" ) );

modules/gui/qt4/ui/v4l2.ui

+<ui version="4.0" >
+ <class>ExtV4l2Widget</class>
+ <widget class="QWidget" name="ExtV4l2Widget" >
+  <property name="geometry" >
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle" >
+   <string>Form</string>
+  </property>
+  <layout class="QVBoxLayout" >
+   <item>
+    <widget class="QPushButton" name="refresh" >
+     <property name="text" >
+      <string>Refresh</string>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>