Restoring the current channel in case a recording has switched the transponder

HISTORY

@@ -2085,10 +2085,10 @@ Video Disk Recorder Revision History
   usage (thanks to Thomas Koch).
 - Fixed faulty calculation of section length in eit.c (thanks to Teemu Rantanen).
 
-2003-05-01: Version 1.1.30
+2003-05-03: Version 1.1.30
 
 - Fixed minimum lifespan of deleted recordings (thanks to Jaakko Hyvätti).
-- Updated French OSD texts (thanks to Olivier Jacques <jacquesolivier@hotmail.com>).
+- Updated French OSD texts (thanks to Olivier Jacques).
 - Fixed paging through lists with repeated Left/Right keys.
 - Fixed setting the PCR-PID in case it is equal to one of the other PIDs (thanks
   to Oliver Endriss for reporting this one).
@@ -2100,3 +2100,6 @@ Video Disk Recorder Revision History
   replay continue even if a recording is started on the primary device.
 - The RCU channel display no longer changes when a recording on a different
   channel starts on the primary device.
+- Restoring the current channel in case a recording has switched the transponder.
+  If all devices are busy and none of them can provide the current channel, the
+  message "Channel not available!" will be displayed.

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 1.40 2003/05/02 09:18:42 kls Exp $
+ * $Id: device.c 1.41 2003/05/03 13:40:15 kls Exp $
  */
 
 #include "device.h"
@@ -50,8 +50,6 @@ cDevice::cDevice(void)
   ciHandler = NULL;
   player = NULL;
 
-  playerDetached = false;
-
   for (int i = 0; i < MAXRECEIVERS; i++)
       receiver[i] = NULL;
 
@@ -122,13 +120,6 @@ bool cDevice::HasDecoder(void) const
   return false;
 }
 
-bool cDevice::PlayerDetached(void)
-{
-  bool result = playerDetached;
-  playerDetached = false;
-  return result;
-}
-
 cOsdBase *cDevice::NewOsd(int x, int y)
 {
   return NULL;
@@ -408,6 +399,11 @@ bool cDevice::SetChannelDevice(const cChannel *Channel, bool LiveView)
   return false;
 }
 
+bool cDevice::HasProgramme(void)
+{
+  return Replaying() || pidHandles[ptAudio].pid || pidHandles[ptVideo].pid;
+}
+
 void cDevice::SetVolumeDevice(int Volume)
 {
 }
@@ -536,7 +532,6 @@ void cDevice::Detach(cPlayer *Player)
      player->device = NULL;
      player = NULL;
      SetPlayMode(pmNone);
-     playerDetached = true;
      Audios.ClearAudio();
      }
 }

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 1.31 2003/05/02 08:21:05 kls Exp $
+ * $Id: device.h 1.32 2003/05/03 13:35:55 kls Exp $
  */
 
 #ifndef __DEVICE_H
@@ -181,6 +181,9 @@ protected:
 public:
   static int CurrentChannel(void) { return primaryDevice ? currentChannel : 0; }
          ///< Returns the number of the current channel on the primary device.
+  virtual bool HasProgramme(void);
+         ///< Returns true if the device is currently showing any programme to
+         ///< the user, either through replaying or live.
 
 // PID handle facilities
 
@@ -300,7 +303,6 @@ public:
 
 private:
   cPlayer *player;
-  bool playerDetached;
 protected:
   virtual bool CanReplay(void) const;
        ///< Returns true if this device can currently start a replay session.
@@ -349,8 +351,6 @@ public:
        ///< Attaches the given player to this device.
   void Detach(cPlayer *Player);
        ///< Detaches the given player from this device.
-  bool PlayerDetached(void);
-       ///< Returns true if a player has been detached and resets the 'playerDetached' flag.
 
 // Receiver facilities
 

vdr.c

@@ -22,7 +22,7 @@
  *
  * The project's page is at http://www.cadsoft.de/people/kls/vdr
  *
- * $Id: vdr.c 1.151 2003/05/02 10:59:07 kls Exp $
+ * $Id: vdr.c 1.152 2003/05/03 13:39:57 kls Exp $
  */
 
 #include <getopt.h>
@@ -53,6 +53,7 @@
 #include "tools.h"
 #include "videodir.h"
 
+#define MINCHANNELWAIT  10 // seconds to wait between failed channel switchings
 #define ACTIVITYTIMEOUT 60 // seconds before starting housekeeping
 #define SHUTDOWNWAIT   300 // seconds to wait in user prompt before automatic shutdown
 #define MANUALSTART    600 // seconds the next timer must be in the future to assume manual start
@@ -460,9 +461,14 @@ int main(int argc, char *argv[])
            }
         // Attach launched player control:
         cControl::Attach();
-        // Make sure Transfer-Mode is re-started after detaching a player:
-        if (cDevice::PrimaryDevice()->PlayerDetached() && !cDevice::PrimaryDevice()->Replaying())
-           Channels.SwitchTo(cDevice::CurrentChannel());
+        // Make sure we have a visible programme in case device usage has changed:
+        if (!cDevice::PrimaryDevice()->HasProgramme()) {
+           static time_t lastTime = 0;
+           if (time(NULL) - lastTime > MINCHANNELWAIT) {
+              if (!Channels.SwitchTo(cDevice::CurrentChannel()))
+                 lastTime = time(NULL); // don't do this too often
+              }
+           }
         // Restart the Watchdog timer:
         if (WatchdogTimeout > 0) {
            int LatencyTime = WatchdogTimeout - alarm(WatchdogTimeout);