diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index ea9354a2..de4ede68 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -639,6 +639,7 @@ Sven Goethel <sgoethel@jausoft.com>
  for making switching audio channels work without stopping/restarting the DMX
  for fixing initializing the highlight area in cDvbSpuDecoder
  for suggesting to add cDevice::GetSTC()
+ for making some changes to the SPU decoder interface
 
 Jan Rieger <jan@ricomp.de>
  for suggestions and testing raw keyboard input
diff --git a/HISTORY b/HISTORY
index c2a7c343..a5f24577 100644
--- a/HISTORY
+++ b/HISTORY
@@ -2904,3 +2904,4 @@ Video Disk Recorder Revision History
 - In order to avoid problems on UTF-8 systems, VDR now checks for the presence
   of UTF-8 at program start, and if it is, exists and tells the user to turn off
   UTF-8 before starting VDR.
+- Some changes to the SPU decoder interface (thanks to Sven Goethel).
diff --git a/dvbspu.h b/dvbspu.h
index df717c1b..e0f3d0c6 100644
--- a/dvbspu.h
+++ b/dvbspu.h
@@ -8,7 +8,7 @@
  *
  * parts of this file are derived from the OMS program.
  *
- * $Id: dvbspu.h 1.4 2004/05/31 08:49:20 kls Exp $
+ * $Id: dvbspu.h 1.5 2004/06/12 12:57:55 kls Exp $
  */
 
 #ifndef __DVBSPU_H
@@ -132,9 +132,6 @@ class cDvbSpuDecoder:public cSpuDecoder {
     int ScaleYres(int value);
     void DrawBmp(sDvbSpuRect & size, cBitmap * bmp);
 
-    void Draw();
-    void Hide();
-
   public:
     cDvbSpuDecoder();
     ~cDvbSpuDecoder();
@@ -147,6 +144,9 @@ class cDvbSpuDecoder:public cSpuDecoder {
                       uint32_t palette);
     void clearHighlight(void);
     void Empty(void);
+    void Hide(void);
+    void Draw(void);
+    bool IsVisible(void) { return osd != NULL; }
     void processSPU(uint32_t pts, uint8_t * buf);
 };
 
diff --git a/spu.h b/spu.h
index 1ccc74b9..053cf1a9 100644
--- a/spu.h
+++ b/spu.h
@@ -6,7 +6,7 @@
  * This code is distributed under the terms and conditions of the
  * GNU GENERAL PUBLIC LICENSE. See the file COPYING for details.
  *
- * $Id: spu.h 1.1 2002/09/08 14:17:51 kls Exp $
+ * $Id: spu.h 1.2 2004/06/12 12:56:27 kls Exp $
  */
 
 #ifndef __SPU_VDR_H
@@ -32,6 +32,9 @@ class cSpuDecoder {
                               uint32_t palette) = 0;
     virtual void clearHighlight(void) = 0;
     virtual void Empty(void) = 0;
+    virtual void Hide(void) = 0;
+    virtual void Draw(void) = 0;
+    virtual bool IsVisible(void) = 0;
     virtual void processSPU(uint32_t pts, uint8_t * buf) = 0;
 };