Added vdr-1.6.0-intcamdevices.patch (#429)

Modified Files:
	HISTORY README client/device.h
Added Files:
	patches/vdr-1.6.0-intcamdevices.patch

HISTORY

@@ -1,6 +1,7 @@
 VDR Plugin 'streamdev' Revision History
 ---------------------------------------
 
+- added vdr-1.6.0-intcamdevices.patch (thanks to Anssi Hannula)
 - fixed problem when switching from one encrypted channel to an other
   (reported by Tiroler@vdrportal, initial bugfix by pixelpeter@vdrportal)
 - added preprocessor directive for ancient gcc

README

@@ -344,5 +344,9 @@ also have to disable automatic channel updates on the client or (if streamdev
 is the only DVB source) disable streamdev's filter streaming feature. Otherwise
 VDR will revert the channel into an encrypted one.
 
-3. Apply the patch "patches/vdr-1.6.0-ignore_missing_cam.diff" to your
+3. Apply either patch "patches/vdr-1.6.0-intcamdevices.patch" or patch
-client VDR.
+"patches/vdr-1.6.0-ignore_missing_cam.diff" to your client VDR. Intcamdevices
+is the clean solution. But as it modifies the VDR API, so you will need to
+recompile all of your plugins. The ignore_missing_cam patch is trivial, no need
+to recompile other plugins. However it is not suitable for clients with a DVB
+card of their own.

client/device.h

@@ -1,5 +1,5 @@
 /*
- *  $Id: device.h,v 1.7 2008/04/07 14:40:39 schmirl Exp $
+ *  $Id: device.h,v 1.8 2008/10/02 07:14:47 schmirl Exp $
  */
  
 #ifndef VDR_STREAMDEV_DEVICE_H
@@ -49,6 +49,7 @@ public:
 	cStreamdevDevice(void);
 	virtual ~cStreamdevDevice();
 
+	virtual bool HasInternalCam(void) { return true; }
 	virtual bool ProvidesSource(int Source) const;
 	virtual bool ProvidesTransponder(const cChannel *Channel) const;
 	virtual bool ProvidesChannel(const cChannel *Channel, int Priority = -1,

patches/vdr-1.6.0-intcamdevices.patch

@@ -0,0 +1,78 @@
+Index: vdr-1.6.0-nocamdevices/device.c
+===================================================================
+--- vdr-1.6.0-nocamdevices/device.c
++++ vdr-1.6.0-nocamdevices/device.c	2008-04-27 18:55:37.000000000 +0300
+@@ -363,6 +363,7 @@
+   int NumCamSlots = CamSlots.Count();
+   int SlotPriority[NumCamSlots];
+   int NumUsableSlots = 0;
++  bool InternalCamNeeded = false;
+   if (Channel->Ca() >= CA_ENCRYPTED_MIN) {
+      for (cCamSlot *CamSlot = CamSlots.First(); CamSlot; CamSlot = CamSlots.Next(CamSlot)) {
+          SlotPriority[CamSlot->Index()] = MAXPRIORITY + 1; // assumes it can't be used
+@@ -376,7 +377,7 @@
+             }
+          }
+      if (!NumUsableSlots)
+-        return NULL; // no CAM is able to decrypt this channel
++        InternalCamNeeded = true; // no CAM is able to decrypt this channel
+      }
+ 
+   bool NeedsDetachReceivers = false;
+@@ -392,11 +393,13 @@
+              continue; // this device shall be temporarily avoided
+           if (Channel->Ca() && Channel->Ca() <= CA_DVB_MAX && Channel->Ca() != device[i]->CardIndex() + 1)
+              continue; // a specific card was requested, but not this one
+-          if (NumUsableSlots && !CamSlots.Get(j)->Assign(device[i], true))
++          if (InternalCamNeeded && !device[i]->HasInternalCam())
++             continue; // no CAM is able to decrypt this channel and the device uses vdr handled CAMs
++          if (NumUsableSlots && !device[i]->HasInternalCam() && !CamSlots.Get(j)->Assign(device[i], true))
+              continue; // CAM slot can't be used with this device
+           bool ndr;
+           if (device[i]->ProvidesChannel(Channel, Priority, &ndr)) { // this device is basicly able to do the job
+-             if (NumUsableSlots && device[i]->CamSlot() && device[i]->CamSlot() != CamSlots.Get(j))
++             if (NumUsableSlots && !device[i]->HasInternalCam() && device[i]->CamSlot() && device[i]->CamSlot() != CamSlots.Get(j))
+                 ndr = true; // using a different CAM slot requires detaching receivers
+              // Put together an integer number that reflects the "impact" using
+              // this device would have on the overall system. Each condition is represented
+@@ -410,18 +413,18 @@
+              imp <<= 1; imp |= device[i]->Receiving();                                                               // avoid devices that are receiving
+              imp <<= 1; imp |= device[i] == cTransferControl::ReceiverDevice();                                      // avoid the Transfer Mode receiver device
+              imp <<= 8; imp |= min(max(device[i]->Priority() + MAXPRIORITY, 0), 0xFF);                               // use the device with the lowest priority (+MAXPRIORITY to assure that values -99..99 can be used)
+-             imp <<= 8; imp |= min(max((NumUsableSlots ? SlotPriority[j] : 0) + MAXPRIORITY, 0), 0xFF);              // use the CAM slot with the lowest priority (+MAXPRIORITY to assure that values -99..99 can be used)
++             imp <<= 8; imp |= min(max(((NumUsableSlots && !device[i]->HasInternalCam()) ? SlotPriority[j] : 0) + MAXPRIORITY, 0), 0xFF);              // use the CAM slot with the lowest priority (+MAXPRIORITY to assure that values -99..99 can be used)
+              imp <<= 1; imp |= ndr;                                                                                  // avoid devices if we need to detach existing receivers
+              imp <<= 1; imp |= device[i]->IsPrimaryDevice();                                                         // avoid the primary device
+-             imp <<= 1; imp |= NumUsableSlots ? 0 : device[i]->HasCi();                                              // avoid cards with Common Interface for FTA channels
++             imp <<= 1; imp |= (NumUsableSlots || InternalCamNeeded) ? 0 : device[i]->HasCi();                       // avoid cards with Common Interface for FTA channels
+              imp <<= 1; imp |= device[i]->HasDecoder();                                                              // avoid full featured cards
+-             imp <<= 1; imp |= NumUsableSlots ? !ChannelCamRelations.CamDecrypt(Channel->GetChannelID(), j + 1) : 0; // prefer CAMs that are known to decrypt this channel
++             imp <<= 1; imp |= (NumUsableSlots && !device[i]->HasInternalCam()) ? !ChannelCamRelations.CamDecrypt(Channel->GetChannelID(), j + 1) : 0; // prefer CAMs that are known to decrypt this channel
+              if (imp < Impact) {
+                 // This device has less impact than any previous one, so we take it.
+                 Impact = imp;
+                 d = device[i];
+                 NeedsDetachReceivers = ndr;
+-                if (NumUsableSlots)
++                if (NumUsableSlots && !device[i]->HasInternalCam())
+                    s = CamSlots.Get(j);
+                 }
+              }
+Index: vdr-1.6.0-nocamdevices/device.h
+===================================================================
+--- vdr-1.6.0-nocamdevices/device.h
++++ vdr-1.6.0-nocamdevices/device.h	2008-04-27 18:55:49.000000000 +0300
+@@ -335,6 +335,12 @@
+ public:
+   virtual bool HasCi(void);
+          ///< Returns true if this device has a Common Interface.
++  virtual bool HasInternalCam(void) { return false; }
++         ///< Returns true if this device handles encrypted channels itself
++         ///< without VDR assistance. This can be e.g. when the device is a
++         ///< client that gets the stream from another VDR instance that has
++         ///< already decrypted the stream. In this case ProvidesChannel()
++         ///< shall check whether the channel can be decrypted.
+   void SetCamSlot(cCamSlot *CamSlot);
+          ///< Sets the given CamSlot to be used with this device.
+   cCamSlot *CamSlot(void) const { return camSlot; }
+