Modified the CAM API so that it is possible to implement CAMs that can be freely assigned to any devices

CONTRIBUTORS

@@ -3315,3 +3315,7 @@ Claus Muus <email@clausmuus.de>
 Dieter Ferdinand <dieter.ferdinand@gmx.de>
  for reporting a problem with jumping to an absolute position via the Red key in
  case replay was paused
+
+Jasmin Jessich <jasmin@anw.at>
+ for modifying the CAM API so that it is possible to implement CAMs that can be freely
+ assigned to any devices

HISTORY

@@ -8307,7 +8307,7 @@ Video Disk Recorder Revision History
 - The APIVERSION has been increased to 2.0.6 due to the changes to pat.h, sdt.h and
   the functional modification to cFont::CreateFont().
 
-2015-01-14: Version 2.1.7
+2015-01-15: Version 2.1.7
 
 - No longer logging an error message in DirSizeMB() if the given directory doesn't
   exist. This avoids lots of log entries in case several VDRs use the same video
@@ -8371,3 +8371,5 @@ Video Disk Recorder Revision History
   want to do the same.
 - Added the channel name to log messages that reference a channel (suggested by
   Dietmar Spingler).
+- Modified the CAM API so that it is possible to implement CAMs that can be freely
+  assigned to any devices (thanks to Jasmin Jessich).

ci.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: ci.c 3.16 2015/01/13 14:42:32 kls Exp $
+ * $Id: ci.c 3.17 2015/01/15 09:14:57 kls Exp $
  */
 
 #include "ci.h"
@@ -1631,7 +1631,6 @@ public:
 cCiAdapter::cCiAdapter(void)
 :cThread("CI adapter")
 {
-  assignedDevice = NULL;
   for (int i = 0; i < MAX_CAM_SLOTS_PER_ADAPTER; i++)
       camSlots[i] = NULL;
 }
@@ -1657,6 +1656,17 @@ void cCiAdapter::AddCamSlot(cCamSlot *CamSlot)
      }
 }
 
+cCamSlot *cCiAdapter::ItCamSlot(int &Iter)
+{
+  if (Iter >= 0) {
+     for (; Iter < MAX_CAM_SLOTS_PER_ADAPTER; ) {
+         if (cCamSlot *Found = camSlots[Iter++])
+            return Found;
+         }
+     }
+  return NULL;
+}
+
 void cCiAdapter::Action(void)
 {
   cTPDU TPDU;
@@ -1684,6 +1694,7 @@ void cCiAdapter::Action(void)
 cCamSlot::cCamSlot(cCiAdapter *CiAdapter, bool ReceiveCaPids)
 {
   ciAdapter = CiAdapter;
+  assignedDevice = NULL;
   caPidReceiver = ReceiveCaPids ? new cCaPidReceiver : NULL;
   slotIndex = -1;
   lastModuleStatus = msReset; // avoids initial reset log message
@@ -1701,8 +1712,8 @@ cCamSlot::cCamSlot(cCiAdapter *CiAdapter, bool ReceiveCaPids)
 
 cCamSlot::~cCamSlot()
 {
-  if (ciAdapter && ciAdapter->assignedDevice)
-     ciAdapter->assignedDevice->SetCamSlot(NULL);
+  if (assignedDevice)
+     assignedDevice->SetCamSlot(NULL);
   delete caPidReceiver;
   CamSlots.Del(this, false);
   DeleteAllConnections();
@@ -1713,13 +1724,13 @@ bool cCamSlot::Assign(cDevice *Device, bool Query)
   cMutexLock MutexLock(&mutex);
   if (ciAdapter) {
      if (ciAdapter->Assign(Device, true)) {
-        if (!Device && ciAdapter->assignedDevice)
-           ciAdapter->assignedDevice->SetCamSlot(NULL);
+        if (!Device && assignedDevice)
+           assignedDevice->SetCamSlot(NULL);
         if (!Query) {
            StopDecrypting();
            source = transponder = 0;
            if (ciAdapter->Assign(Device)) {
-              ciAdapter->assignedDevice = Device;
+              assignedDevice = Device;
               if (Device) {
                  Device->SetCamSlot(this);
                  dsyslog("CAM %d: assigned to device %d", slotNumber, Device->DeviceNumber() + 1);
@@ -1736,17 +1747,6 @@ bool cCamSlot::Assign(cDevice *Device, bool Query)
   return false;
 }
 
-cDevice *cCamSlot::Device(void)
-{
-  cMutexLock MutexLock(&mutex);
-  if (ciAdapter) {
-     cDevice *d = ciAdapter->assignedDevice;
-     if (d && d->CamSlot() == this)
-        return d;
-     }
-  return NULL;
-}
-
 void cCamSlot::NewConnection(void)
 {
   cMutexLock MutexLock(&mutex);

ci.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: ci.h 3.8 2014/03/26 11:42:17 kls Exp $
+ * $Id: ci.h 3.9 2015/01/15 09:18:09 kls Exp $
  */
 
 #ifndef __CI_H
@@ -79,11 +79,14 @@ enum eModuleStatus { msNone, msReset, msPresent, msReady };
 class cCiAdapter : public cThread {
   friend class cCamSlot;
 private:
-  cDevice *assignedDevice;
   cCamSlot *camSlots[MAX_CAM_SLOTS_PER_ADAPTER];
   void AddCamSlot(cCamSlot *CamSlot);
        ///< Adds the given CamSlot to this CI adapter.
 protected:
+  cCamSlot *ItCamSlot(int &Iter);
+       ///< Iterates over all added CAM slots of this adapter. Iter has to be
+       ///< initialized to 0 and is required to store the iteration state.
+       ///< Returns NULL if no further CAM slot is found.
   virtual void Action(void);
        ///< Handles the attached CAM slots in a separate thread.
        ///< The derived class must call the Start() function to
@@ -128,6 +131,7 @@ private:
   cMutex mutex;
   cCondVar processed;
   cCiAdapter *ciAdapter;
+  cDevice *assignedDevice;
   cCaPidReceiver *caPidReceiver;
   int slotIndex;
   int slotNumber;
@@ -164,7 +168,7 @@ public:
        ///< device it was previously assigned to. The value of Query
        ///< is ignored in that case, and this function always returns
        ///< 'true'.
-  cDevice *Device(void);
+  cDevice *Device(void) { return assignedDevice; }
        ///< Returns the device this CAM slot is currently assigned to.
   bool WantsTsData(void) const { return caPidReceiver != NULL; }
        ///< Returns true if this CAM slot wants to receive the TS data through