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+/*
+ * 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