Totally rearranged device/player/recorder structures

receiver.h

@@ -0,0 +1,48 @@
+/*
+ * receiver.h: The basic receiver interface
+ *
+ * See the main source file 'vdr.c' for copyright information and
+ * how to reach the author.
+ *
+ * $Id: receiver.h 1.1 2002/06/10 16:30:00 kls Exp $
+ */
+
+#ifndef __RECEIVER_H
+#define __RECEIVER_H
+
+#include "device.h"
+
+#define MAXRECEIVEPIDS  16 // the maximum number of PIDs per receiver
+
+class cReceiver {
+  friend class cDevice;
+private:
+  cDevice *device;
+  int ca;
+  int priority;
+  int pids[MAXRECEIVEPIDS];
+  bool WantsPid(int Pid);
+protected:
+  void Detach(void);
+  virtual void Activate(bool On) {}
+               // This function is called just before the cReceiver gets attached to
+               // (On == true) or detached from (On == false) a cDevice. It can be used
+               // to do things like starting/stopping a thread.
+               // It is guaranteed that Receive() will not be called before Activate(true).
+  virtual void Receive(uchar *Data, int Length) = 0;
+               // This function is called from the cDevice we are attached to, and
+               // delivers one TS packet from the set of PIDs the cReceiver has requested.
+               // The data packet must be accepted immediately, and the call must return
+               // as soon as possible, without any unnecessary delay. Each TS packet
+               // will be delivered only ONCE, so the cReceiver must make sure that
+               // it will be able to buffer the data if necessary.
+public:
+  cReceiver(int Ca, int Priority, int NumPids, ...);
+               // Creates a new receiver that requires conditional access Ca and has
+               // the given Priority. NumPids defines the number of PIDs that follow
+               // this parameter. If any of these PIDs are 0, they will be silently ignored.
+               // The total number of non-zero PIDs must not exceed MAXRECEIVEPIDS.
+  virtual ~cReceiver();
+  };
+
+#endif //__RECEIVER_H