Adapted c(Dvb)Device::ProvidesCa() to the dynamic CA handling

HISTORY

@@ -4126,3 +4126,4 @@ Video Disk Recorder Revision History
   Andreas Böttger).
 - The file 'ca.conf' is obsolete and has been removed.
 - Revised all descriptions regarding CICAM.
+- Adapted c(Dvb)Device::ProvidesCa() to the dynamic CA handling.

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 1.41 2005/12/30 15:41:38 kls Exp $
+ * $Id: ci.c 1.42 2006/01/07 15:07:16 kls Exp $
  */
 
 #include "ci.h"
@@ -1639,6 +1639,15 @@ int cCiHandler::CloseAllSessions(int Slot)
   return result;
 }
 
+int cCiHandler::NumCams(void)
+{
+  int result = 0;
+  for (int i = 0; i < MAX_CI_SLOT; i++)
+      if (moduleReady[i])
+         result++;
+  return result;
+}
+
 bool cCiHandler::Ready(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 1.20 2005/12/03 11:59:05 kls Exp $
+ * $Id: ci.h 1.21 2006/01/07 15:03:05 kls Exp $
  */
 
 #ifndef __CI_H
@@ -127,6 +127,8 @@ public:
        ///< Creates a new cCiHandler for the given CA device.
   int NumSlots(void) { return numSlots; }
        ///< Returns the number of CAM slots provided by this CA device.
+  int NumCams(void);
+       ///< Returns the number of actual CAMs inserted into this CA device.
   bool Ready(void);
        ///< Returns true if all CAMs in this CA device are ready.
   bool Process(int Slot = -1);

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 1.118 2006/01/07 14:09:17 kls Exp $
+ * $Id: device.c 1.119 2006/01/07 14:50:45 kls Exp $
  */
 
 #include "device.h"
@@ -302,7 +302,7 @@ cDevice *cDevice::GetDevice(const cChannel *Channel, int Priority, bool *NeedsDe
             pri = 6; // receiving with same priority but fewer Ca's
          else
             pri = 7; // all others
-         if (pri < select) {
+         if (pri <= select) {
             select = pri;
             d = device[i];
             if (NeedsDetachReceivers)
@@ -1147,7 +1147,7 @@ int cDevice::ProvidesCa(const cChannel *Channel) const
   int Ca = Channel->Ca();
   if (Ca == CardIndex() + 1)
      return 1; // exactly _this_ card was requested
-  if (Ca && Ca <= MAXDEVICES)
+  if (Ca && Ca <= CA_DVB_MAX)
      return 0; // a specific card was requested, but not _this_ one
   return !Ca; // by default every card can provide FTA
 }

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 1.68 2006/01/06 13:20:25 kls Exp $
+ * $Id: device.h 1.69 2006/01/07 14:50:45 kls Exp $
  */
 
 #ifndef __DEVICE_H
@@ -170,14 +170,16 @@ public:
          ///< Returns the card index of this device (0 ... MAXDEVICES - 1).
   int DeviceNumber(void) const;
          ///< Returns the number of this device (0 ... MAXDEVICES - 1).
-  virtual int ProvidesCa(const cChannel *Channel) const;//XXX PLUGINS.html!!!
+  virtual int ProvidesCa(const cChannel *Channel) const;
-         //XXX describe changed functionality!!!
+         ///< Checks whether this device provides the conditional access
-         ///< Checks whether this device provides the given value in its
+         ///< facilities to decrypt the given Channel.
-         ///< caCaps. Returns 0 if the value is not provided, 1 if only this
+         ///< Returns 0 if the Channel can't be decrypted, 1 if this is a
-         ///< value is provided, and > 1 if this and other values are provided.
+         ///< Free To Air channel or only exactly this device can decrypt it,
-         ///< If the given value is equal to the number of this device,
+         ///< and > 1 if this device can decrypt the Channel.
-         ///< 1 is returned. If it is 0 (FTA), 1 plus the number of other values
+         ///< If the result is greater than 1 and the device has more than one
-         ///< in caCaps is returned.
+         ///< CAM, the value will be increased by the number of CAMs, which
+         ///< allows to select the device with the smallest number of CAMs
+         ///< in order to preserve resources for other recordings.
   virtual bool HasDecoder(void) const;
          ///< Tells whether this device has an MPEG decoder.
 

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 1.148 2006/01/07 14:05:59 kls Exp $
+ * $Id: dvbdevice.c 1.149 2006/01/07 15:15:01 kls Exp $
  */
 
 #include "dvbdevice.h"
@@ -503,13 +503,21 @@ bool cDvbDevice::Ready(void)
 
 int cDvbDevice::ProvidesCa(const cChannel *Channel) const
 {
-  if (Channel->Ca() >= CA_ENCRYPTED_MIN && ciHandler) {
+  int NumCams = 0;
-     unsigned short ids[MAXCAIDS + 1];
+  if (ciHandler) {
-     for (int i = 0; i <= MAXCAIDS; i++) // '<=' copies the terminating 0!
+     NumCams = ciHandler->NumCams();
-         ids[i] = Channel->Ca(i);
+     if (Channel->Ca() >= CA_ENCRYPTED_MIN) {
-     return ciHandler->ProvidesCa(ids);
+        unsigned short ids[MAXCAIDS + 1];
+        for (int i = 0; i <= MAXCAIDS; i++) // '<=' copies the terminating 0!
+            ids[i] = Channel->Ca(i);
+        if (ciHandler->ProvidesCa(ids))
+           return NumCams + 1;
+        }
      }
-  return cDevice::ProvidesCa(Channel);
+  int result = cDevice::ProvidesCa(Channel);
+  if (result > 0)
+     result += NumCams;
+  return result;
 }
 
 cSpuDecoder *cDvbDevice::GetSpuDecoder(void)