mirror of https://github.com/VDR4Arch/vdr.git
91 lines
4.5 KiB
C++
91 lines
4.5 KiB
C++
/*
|
|
* 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 4.3 2017/05/01 08:48:34 kls Exp $
|
|
*/
|
|
|
|
#ifndef __RECEIVER_H
|
|
#define __RECEIVER_H
|
|
|
|
#include "device.h"
|
|
|
|
#define MAXRECEIVEPIDS 64 // the maximum number of PIDs per receiver
|
|
|
|
class cReceiver {
|
|
friend class cDevice;
|
|
private:
|
|
cDevice *device;
|
|
tChannelID channelID;
|
|
int priority;
|
|
int pids[MAXRECEIVEPIDS];
|
|
int numPids;
|
|
time_t lastScrambledPacket;
|
|
time_t startScrambleDetection;
|
|
int scramblingTimeout;
|
|
time_t startEitInjection;
|
|
time_t lastEitInjection;
|
|
bool WantsPid(int Pid);
|
|
protected:
|
|
cDevice *Device(void) { return device; }
|
|
void Detach(void);
|
|
virtual void Activate(bool On) {}
|
|
///< This function is called just before the cReceiver gets attached to
|
|
///< (On == true) and right after it gets 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(const 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(const cChannel *Channel = NULL, int Priority = MINPRIORITY);
|
|
///< Creates a new receiver for the given Channel with the given Priority.
|
|
///< If Channel is not NULL, its pids are set by a call to SetPids().
|
|
///< Otherwise pids can be added to the receiver by separate calls to the AddPid[s]
|
|
///< functions.
|
|
///< The total number of PIDs added to a receiver must not exceed MAXRECEIVEPIDS.
|
|
///< Priority may be any value in the range MINPRIORITY...MAXPRIORITY. Negative values indicate
|
|
///< that this cReceiver may be detached at any time in favor of a timer recording
|
|
///< or live viewing (without blocking the cDevice it is attached to).
|
|
virtual ~cReceiver();
|
|
int Priority(void) { return priority; }
|
|
void SetPriority(int Priority);
|
|
bool AddPid(int Pid);
|
|
///< Adds the given Pid to the list of PIDs of this receiver.
|
|
bool AddPids(const int *Pids);
|
|
///< Adds the given zero terminated list of Pids to the list of PIDs of this
|
|
///< receiver.
|
|
bool AddPids(int Pid1, int Pid2, int Pid3 = 0, int Pid4 = 0, int Pid5 = 0, int Pid6 = 0, int Pid7 = 0, int Pid8 = 0, int Pid9 = 0);
|
|
///< Adds the given Pids to the list of PIDs of this receiver.
|
|
bool SetPids(const cChannel *Channel);
|
|
///< Sets the PIDs of this receiver to those of the given Channel,
|
|
///< replacing any previously stored PIDs. If Channel is NULL, all
|
|
///< PIDs will be cleared. Parameters in the Setup may control whether
|
|
///< certain types of PIDs (like Dolby Digital, for instance) are
|
|
///< actually set. The Channel's ID is stored and can later be retrieved
|
|
///< through ChannelID(). The ChannelID is necessary to allow the device
|
|
///< that will be used for this receiver to detect and store whether the
|
|
///< channel can be decrypted in case this is an encrypted channel.
|
|
void DelPid(int Pid);
|
|
///< Deletes the given Pid from the list of PIDs of this receiver.
|
|
void DelPids(const int *Pids);
|
|
///< Deletes the given zero terminated list of Pids from the list of PIDs of this
|
|
///< receiver.
|
|
tChannelID ChannelID(void) { return channelID; }
|
|
int NumPids(void) const { return numPids; }
|
|
bool IsAttached(void) { return device != NULL; }
|
|
///< Returns true if this receiver is (still) attached to a device.
|
|
///< A receiver may be automatically detached from its device in
|
|
///< case the device is needed otherwise, so code that uses a cReceiver
|
|
///< should repeatedly check whether it is still attached, and if
|
|
///< it isn't, delete it (or take any other appropriate measures).
|
|
};
|
|
|
|
#endif //__RECEIVER_H
|