diff --git a/plugins/channelrx/demodatv/CMakeLists.txt b/plugins/channelrx/demodatv/CMakeLists.txt
index 7c783ecc1..7cc6a5237 100644
--- a/plugins/channelrx/demodatv/CMakeLists.txt
+++ b/plugins/channelrx/demodatv/CMakeLists.txt
@@ -13,6 +13,7 @@ set(atv_HEADERS
 	atvdemodgui.h
 	atvdemodplugin.h
 	atvscreen.h
+	atvscreeninterface.h
 	glshaderarray.h
 )
 
diff --git a/plugins/channelrx/demodatv/atvdemod.cpp b/plugins/channelrx/demodatv/atvdemod.cpp
index ff84988a9..f9209bf1a 100644
--- a/plugins/channelrx/demodatv/atvdemod.cpp
+++ b/plugins/channelrx/demodatv/atvdemod.cpp
@@ -101,7 +101,7 @@ ATVDemod::~ATVDemod()
     delete m_channelizer;
 }
 
-void ATVDemod::setATVScreen(ATVScreen *objScreen)
+void ATVDemod::setATVScreen(ATVScreenInterface *objScreen)
 {
     m_registeredATVScreen = objScreen;
 }
diff --git a/plugins/channelrx/demodatv/atvdemod.h b/plugins/channelrx/demodatv/atvdemod.h
index c2e1d286a..7013d3e23 100644
--- a/plugins/channelrx/demodatv/atvdemod.h
+++ b/plugins/channelrx/demodatv/atvdemod.h
@@ -36,7 +36,7 @@
 #include "dsp/phasediscri.h"
 #include "audio/audiofifo.h"
 #include "util/message.h"
-#include "atvscreen.h"
+#include "atvscreeninterface.h"
 
 class DeviceSourceAPI;
 class ThreadedBasebandSampleSink;
@@ -221,7 +221,7 @@ public:
 	virtual void stop();
 	virtual bool handleMessage(const Message& cmd);
 
-    void setATVScreen(ATVScreen *objScreen);
+    void setATVScreen(ATVScreenInterface *objScreen);
     int getSampleRate();
     int getEffectiveSampleRate();
     double getMagSq() const { return m_objMagSqAverage.average(); } //!< Beware this is scaled to 2^30
@@ -396,7 +396,7 @@ private:
     SampleVector m_scopeSampleBuffer;
 
     //*************** ATV PARAMETERS  ***************
-    ATVScreen * m_registeredATVScreen;
+    ATVScreenInterface * m_registeredATVScreen;
 
     //int m_intNumberSamplePerLine;
     int m_intNumberSamplePerTop;
diff --git a/plugins/channelrx/demodatv/atvscreen.cpp b/plugins/channelrx/demodatv/atvscreen.cpp
index 809398e48..95bcc0029 100644
--- a/plugins/channelrx/demodatv/atvscreen.cpp
+++ b/plugins/channelrx/demodatv/atvscreen.cpp
@@ -28,7 +28,7 @@
 #include <QDebug>
 
 ATVScreen::ATVScreen(QWidget* parent) :
-        QGLWidget(parent), m_objMutex(QMutex::NonRecursive)
+        QGLWidget(parent), ATVScreenInterface(), m_objMutex(QMutex::NonRecursive)
 {
     setAttribute(Qt::WA_OpaquePaintEvent);
     connect(&m_objTimer, SIGNAL(timeout()), this, SLOT(tick()));
@@ -37,7 +37,7 @@ ATVScreen::ATVScreen(QWidget* parent) :
     m_chrLastData = NULL;
     m_blnConfigChanged = false;
     m_blnDataChanged = false;
-    m_blnRenderImmediate = false;
+    //m_blnRenderImmediate = false;
     m_blnGLContextInitialized = false;
 
     //Par défaut
diff --git a/plugins/channelrx/demodatv/atvscreen.h b/plugins/channelrx/demodatv/atvscreen.h
index 1e1aebd04..71ff751b3 100644
--- a/plugins/channelrx/demodatv/atvscreen.h
+++ b/plugins/channelrx/demodatv/atvscreen.h
@@ -33,28 +33,29 @@
 #include "util/export.h"
 #include "util/bitfieldindex.h"
 
+#include "atvscreeninterface.h"
 
 class QPainter;
 
 
 
-class SDRANGEL_API ATVScreen: public QGLWidget
+class SDRANGEL_API ATVScreen: public QGLWidget, public ATVScreenInterface
 {
 	Q_OBJECT
 
 public:
 
 	ATVScreen(QWidget* parent = NULL);
-	~ATVScreen();
+	virtual ~ATVScreen();
 
-    void resizeATVScreen(int intCols, int intRows);
-    void renderImage(unsigned char * objData);
+	virtual void resizeATVScreen(int intCols, int intRows);
+	virtual void renderImage(unsigned char * objData);
     QRgb* getRowBuffer(int intRow);
     void resetImage();
 
-    bool selectRow(int intLine);
-    bool setDataColor(int intCol,int intRed, int intGreen, int intBlue);
-    void setRenderImmediate(bool blnRenderImmediate) { m_blnRenderImmediate = blnRenderImmediate; }
+    virtual bool selectRow(int intLine);
+    virtual bool setDataColor(int intCol,int intRed, int intGreen, int intBlue);
+    //void setRenderImmediate(bool blnRenderImmediate) { m_blnRenderImmediate = blnRenderImmediate; }
 
     void connectTimer(const QTimer& timer);
 
@@ -76,7 +77,7 @@ private:
     QTimer m_objTimer;
     QMutex m_objMutex;
     bool m_blnDataChanged;
-    bool m_blnRenderImmediate;
+    //bool m_blnRenderImmediate;
     bool m_blnConfigChanged;
 
     GLShaderArray m_objGLShaderArray;
diff --git a/plugins/channelrx/demodatv/atvscreeninterface.h b/plugins/channelrx/demodatv/atvscreeninterface.h
new file mode 100644
index 000000000..3a16c59aa
--- /dev/null
+++ b/plugins/channelrx/demodatv/atvscreeninterface.h
@@ -0,0 +1,46 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2017 F4HKW                                                      //
+// for F4EXB / SDRAngel                                                          //
+//                                                                               //
+// OpenGL interface modernization.                                               //
+// See: http://doc.qt.io/qt-5/qopenglshaderprogram.html                          //
+//                                                                               //
+// 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 as version 3 of the License, or                  //
+//                                                                               //
+// 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 V3 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 PLUGINS_CHANNELRX_DEMODATV_ATVSCREENINTERFACE_H_
+#define PLUGINS_CHANNELRX_DEMODATV_ATVSCREENINTERFACE_H_
+
+class ATVScreenInterface
+{
+public:
+    ATVScreenInterface() :
+        m_blnRenderImmediate(false)
+    {}
+
+    virtual ~ATVScreenInterface() {}
+
+    virtual void resizeATVScreen(int intCols __attribute__((unused)), int intRows __attribute__((unused))) {}
+    virtual void renderImage(unsigned char * objData __attribute__((unused))) {}
+    virtual bool selectRow(int intLine __attribute__((unused))) { return false; }
+    virtual bool setDataColor(int intCol __attribute__((unused)), int intRed __attribute__((unused)), int intGreen __attribute__((unused)), int intBlue __attribute__((unused))) { return false; }
+    void setRenderImmediate(bool blnRenderImmediate) { m_blnRenderImmediate = blnRenderImmediate; }
+
+protected:
+    bool m_blnRenderImmediate;
+
+};
+
+
+
+#endif /* PLUGINS_CHANNELRX_DEMODATV_ATVSCREENINTERFACE_H_ */
diff --git a/plugins/channelrx/demodatv/demodatv.pro b/plugins/channelrx/demodatv/demodatv.pro
index a6d46d75e..5fc8131bf 100644
--- a/plugins/channelrx/demodatv/demodatv.pro
+++ b/plugins/channelrx/demodatv/demodatv.pro
@@ -31,14 +31,15 @@ CONFIG(macx):INCLUDEPATH += "../../../../../boost_1_64_0"
 SOURCES += atvdemod.cpp\
 	atvdemodgui.cpp\
 	atvdemodplugin.cpp\
-        atvscreen.cpp\
-        glshaderarray.cpp
+    atvscreen.cpp\
+    glshaderarray.cpp
 
 HEADERS += atvdemod.h\
 	atvdemodgui.h\
 	atvdemodplugin.h\
-        atvscreen.h\
-        glshaderarray.h
+    atvscreen.h\
+    atvscreeninterface.h\
+    glshaderarray.h
 
 FORMS += atvdemodgui.ui