Improved cDvbDevice::GetOsdSize()

CONTRIBUTORS

@@ -673,6 +673,7 @@ Oliver Endriss <o.endriss@gmx.de>
  for reporting chirping sound disturbences at editing points in TS recordings
  for reporting broken index generation in TS recordings after a buffer overflow
  for fixing the way the OSD size is determined on full featured DVB cards
+ for his input on calculating the Aspect factor in GetOsdSize()
 
 Reinhard Walter Buchner <rw.buchner@freenet.de>
  for adding some satellites to 'sources.conf'
@@ -1221,6 +1222,8 @@ Reinhard Nissl <rnissl@gmx.de>
  for reporting a call to close(-1) in cUnbufferedFile::Close()
  for reporting a possible problem in handling the length of DiSEqC command sequences
  for fixing cOsdMenu::Display() in case the menu size has changed
+ for suggesting to change the type of the Aspect parameter of GetVideoSize()
+ to 'double'
 
 Richard Robson <richard_robson@beeb.net>
  for reporting freezing replay if a timer starts while in Transfer Mode from the

HISTORY

@@ -6084,7 +6084,11 @@ Video Disk Recorder Revision History
   been introduced (suggested by Rolf Ahrenberg). Plugin authors should
   implement this function in classes derived from cDevice, if they are able
   to replay video. cDevice::GetVideoSize() still exists and should return the
-  actual size of the video material that is currently replayed.
+  actual size of the video material that is currently replayed. Note that
+  because of the many possible aspect ratios for video material, the type
+  of the Aspect parameter of GetVideoSize() has been changed to 'double'
+  (suggested by Reinhard Nissl). Thanks to Oliver Endriss for his input on
+  calculating the Aspect factor in GetOsdSize().
 - Fixed the way the OSD size is determined on full featured DVB cards (thanks
   to Oliver Endriss).
 - Increased MAXOSDHEIGHT to 1200 (suggested by Nicolas Huillard).

device.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: device.c 2.19 2009/05/09 10:02:58 kls Exp $
+ * $Id: device.c 2.20 2009/06/01 14:08:45 kls Exp $
  */
 
 #include "device.h"
@@ -389,11 +389,11 @@ eVideoSystem cDevice::GetVideoSystem(void)
   return vsPAL;
 }
 
-void cDevice::GetVideoSize(int &Width, int &Height, eVideoAspect &Aspect)
+void cDevice::GetVideoSize(int &Width, int &Height, double &Aspect)
 {
   Width = 0;
   Height = 0;
-  Aspect = va4_3;
+  Aspect = 1.0;
 }
 
 void cDevice::GetOsdSize(int &Width, int &Height, double &Aspect)

device.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: device.h 2.12 2009/05/08 13:39:08 kls Exp $
+ * $Id: device.h 2.13 2009/06/01 14:07:55 kls Exp $
  */
 
 #ifndef __DEVICE_H
@@ -56,11 +56,6 @@ enum eVideoSystem { vsPAL,
                     vsNTSC
                   };
 
-enum eVideoAspect { va4_3,
-                    va16_9,
-                    va221_1
-                  };
-
 extern const char *VideoAspectString[];
 
 enum eVideoDisplayFormat { vdfPanAndScan,
@@ -384,17 +379,20 @@ public:
   virtual eVideoSystem GetVideoSystem(void);
          ///< Returns the video system of the currently displayed material
          ///< (default is PAL).
-  virtual void GetVideoSize(int &Width, int &Height, eVideoAspect &Aspect);
+  virtual void GetVideoSize(int &Width, int &Height, double &Aspect);
          ///< Returns the With, Height and Aspect ratio of the currently
          ///< displayed material. The data returned by this function is
-         ///< only used for informational purposes (if any).
+         ///< only used for informational purposes (if any). Width and
-         ///< The default implementation returns 0 for Width and Height.
+         ///< Height are given in pixel (e.g. 720x576) and Aspect is
+         ///< e.g. 1.3333x33 for a 4:3 broadcast, or 1.77778 for 16:9.
+         ///< The default implementation returns 0 for Width and Height
+         ///< and 1.0 for Aspect.
   virtual void GetOsdSize(int &Width, int &Height, double &Aspect);
          ///< Returns the With, Height and Aspect ratio the OSD should use
          ///< to best fit the resolution of the output device. If Aspect
          ///< is not 1.0, the OSD may take this as a hint to stretch its
-         ///< graphics in a way that, e.g., a square area will actually
+         ///< graphics in a way that, e.g., a circle will actually
-         ///< show up as a square on the screen, and not as a rectangle.
+         ///< show up as a circle on the screen, and not as an ellipse.
          ///< Values greater than 1.0 will stretch the graphics in the
          ///< vertical direction. Note that the OSD is not guaranteed to
          ///< actually use this hint.

dvbdevice.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: dvbdevice.c 2.19 2009/06/01 11:42:06 kls Exp $
+ * $Id: dvbdevice.c 2.20 2009/06/01 14:44:54 kls Exp $
  */
 
 #include "dvbdevice.h"
@@ -748,14 +748,19 @@ eVideoSystem cDvbDevice::GetVideoSystem(void)
   return VideoSystem;
 }
 
-void cDvbDevice::GetVideoSize(int &Width, int &Height, eVideoAspect &Aspect)
+void cDvbDevice::GetVideoSize(int &Width, int &Height, double &Aspect)
 {
   if (fd_video >= 0) {
      video_size_t vs;
      if (ioctl(fd_video, VIDEO_GET_SIZE, &vs) == 0) {
         Width = vs.w;
         Height = vs.h;
-        Aspect = eVideoAspect(vs.aspect_ratio);
+        switch (vs.aspect_ratio) {
+          default:
+          case VIDEO_FORMAT_4_3:   Aspect =  4.0 / 3.0; break;
+          case VIDEO_FORMAT_16_9:  Aspect = 16.0 / 9.0; break;
+          case VIDEO_FORMAT_221_1: Aspect =       2.21; break;
+          }
         return;
         }
      else
@@ -774,7 +779,13 @@ void cDvbDevice::GetOsdSize(int &Width, int &Height, double &Aspect)
            Height = 576; // PAL
         else
            Height = 480; // NTSC
-        Aspect = 1.0;
+        switch (Setup.VideoFormat ? vs.aspect_ratio : VIDEO_FORMAT_4_3) {
+          default:
+          case VIDEO_FORMAT_4_3:   Aspect =  4.0 / 3.0; break;
+          case VIDEO_FORMAT_221_1: // FF DVB cards only distinguish between 4:3 and 16:9
+          case VIDEO_FORMAT_16_9:  Aspect = 16.0 / 9.0; break;
+          }
+        Aspect /= double(Width) / Height;
         return;
         }
      else

dvbdevice.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: dvbdevice.h 2.6 2009/06/01 11:20:32 kls Exp $
+ * $Id: dvbdevice.h 2.7 2009/06/01 14:09:05 kls Exp $
  */
 
 #ifndef __DVBDEVICE_H
@@ -108,7 +108,7 @@ public:
   virtual void SetVideoDisplayFormat(eVideoDisplayFormat VideoDisplayFormat);
   virtual void SetVideoFormat(bool VideoFormat16_9);
   virtual eVideoSystem GetVideoSystem(void);
-  virtual void GetVideoSize(int &Width, int &Height, eVideoAspect &Aspect);
+  virtual void GetVideoSize(int &Width, int &Height, double &Aspect);
   virtual void GetOsdSize(int &Width, int &Height, double &Aspect);
 
 // Track facilities