From 6e2f0f695f0c537ddeb0c61b51e298caf29bcbb3 Mon Sep 17 00:00:00 2001
From: Klaus Schmidinger <vdr@tvdr.de>
Date: Mon, 20 Jan 2014 12:14:30 +0100
Subject: [PATCH] Now making sure the primary device goes into transfer mode
 for live viewing if the CAM wants to receive the TS data

---
 HISTORY     |  4 +++-
 ci.h        | 17 ++++++++++-------
 device.c    |  5 ++++-
 dvbdevice.c | 18 ++++++++++++------
 4 files changed, 29 insertions(+), 15 deletions(-)

diff --git a/HISTORY b/HISTORY
index b9006040..29a89894 100644
--- a/HISTORY
+++ b/HISTORY
@@ -8132,7 +8132,7 @@ Video Disk Recorder Revision History
   and also to use the correct directory with --edit (the latter reported by Marko
   Mäkelä).
 
-2014-01-18: Version 2.1.4
+2014-01-20: Version 2.1.4
 
 - Updated 'sources.conf' (thanks to Antti Hartikainen).
 - cFont::CreateFont() now returns a dummy font in case there are no fonts installed.
@@ -8155,3 +8155,5 @@ Video Disk Recorder Revision History
 - Fixed detecting frame borders in MPEG-2 streams that have "bottom fields" or varying
   GOP structures (reported by Christian Paulick, with help from Helmut Auer).
 - Now unassigning CAMs from their devices when they are no longer used.
+- Now making sure the primary device goes into transfer mode for live viewing if the
+  CAM wants to receive the TS data.
diff --git a/ci.h b/ci.h
index 190e3e08..159552cf 100644
--- a/ci.h
+++ b/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 3.5 2014/01/16 11:45:08 kls Exp $
+ * $Id: ci.h 3.6 2014/01/20 12:01:01 kls Exp $
  */
 
 #ifndef __CI_H
@@ -147,13 +147,13 @@ private:
   void Write(cTPDU *TPDU);
   cCiSession *GetSessionByResourceId(uint32_t ResourceId);
 public:
-  cCamSlot(cCiAdapter *CiAdapter, bool ReceiveCaPids = false);
+  cCamSlot(cCiAdapter *CiAdapter, bool WantsTsData = false);
        ///< Creates a new CAM slot for the given CiAdapter.
        ///< The CiAdapter will take care of deleting the CAM slot,
        ///< so the caller must not delete it!
-       ///< If ReceiveCaPids is true, the CAM slot will take care that the CA pids
-       ///< of the selected programmes will be included in the TS data stream that
-       ///< is presented to the Decrypt() function.
+       ///< If WantsTsData is true, the device this CAM slot is assigned to will
+       ///< call the Decrypt() function of this CAM slot, presenting it the complete
+       ///< TS data stream of the encrypted programme, including the CA pids.
   virtual ~cCamSlot();
   bool Assign(cDevice *Device, bool Query = false);
        ///< Assigns this CAM slot to the given Device, if this is possible.
@@ -166,6 +166,9 @@ public:
        ///< 'true'.
   cDevice *Device(void);
        ///< 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
+       ///< its Decrypt() function.
   int SlotIndex(void) { return slotIndex; }
        ///< Returns the index of this CAM slot within its CI adapter.
        ///< The first slot has an index of 0.
@@ -261,8 +264,8 @@ public:
        ///< shall be set to 0 and the same Data pointer will be offered in the next
        ///< call to Decrypt().
        ///< A derived class that implements this function will also need
-       ///< to set the ReceiveCaPids parameter in the call to the base class
-       ///< constructor to true in order to receive the CA pid data.
+       ///< to set the WantsTsData parameter in the call to the base class
+       ///< constructor to true in order to receive the TS data.
   };
 
 class cCamSlots : public cList<cCamSlot> {
diff --git a/device.c b/device.c
index 75bb9181..5b9e1ec6 100644
--- a/device.c
+++ b/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 3.9 2014/01/18 14:26:06 kls Exp $
+ * $Id: device.c 3.10 2014/01/20 11:53:47 kls Exp $
  */
 
 #include "device.h"
@@ -761,6 +761,9 @@ eSetChannelResult cDevice::SetChannel(const cChannel *Channel, bool LiveView)
   cDevice *Device = (LiveView && IsPrimaryDevice()) ? GetDevice(Channel, LIVEPRIORITY, true) : this;
 
   bool NeedsTransferMode = Device != this;
+  // If the CAM slot wants the TS data, we need to switch to Transfer Mode:
+  if (!NeedsTransferMode && LiveView && IsPrimaryDevice() && CamSlot() && CamSlot()->WantsTsData())
+     NeedsTransferMode = true;
 
   eSetChannelResult Result = scrOk;
 
diff --git a/dvbdevice.c b/dvbdevice.c
index 6842a4ca..6d1c9562 100644
--- a/dvbdevice.c
+++ b/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 3.9 2014/01/16 11:45:22 kls Exp $
+ * $Id: dvbdevice.c 3.10 2014/01/20 11:46:26 kls Exp $
  */
 
 #include "dvbdevice.h"
@@ -1664,12 +1664,18 @@ void cDvbDevice::CloseDvr(void)
 bool cDvbDevice::GetTSPacket(uchar *&Data)
 {
   if (tsBuffer) {
-     int Available;
-     Data = tsBuffer->Get(&Available);
-     if (Data && CamSlot()) {
-        Data = CamSlot()->Decrypt(Data, Available);
-        tsBuffer->Skip(Available);
+     if (cCamSlot *cs = CamSlot()) {
+        if (cs->WantsTsData()) {
+           int Available;
+           Data = tsBuffer->Get(&Available);
+           if (Data) {
+              Data = cs->Decrypt(Data, Available);
+              tsBuffer->Skip(Available);
+              }
+           return true;
+           }
         }
+     Data = tsBuffer->Get();
      return true;
      }
   return false;