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+/*
+ * device.h: The basic device interface
+ *
+ * See the main source file 'vdr.c' for copyright information and
+ * how to reach the author.
+ *
+ * $Id: device.h 1.1 2002/06/09 15:48:32 kls Exp $
+ */
+
+#ifndef __DEVICE_H
+#define __DEVICE_H
+
+#include <stdlib.h> // FIXME: this is apparently necessary for the ost/... header files
+                    // FIXME: shouldn't every header file include ALL the other header
+                    // FIXME: files it depends on? The sequence in which header files
+                    // FIXME: are included here should not matter - and it should NOT
+                    // FIXME: be necessary to include <stdlib.h> here!
+#include <ost/dmx.h>
+#include <ost/frontend.h>
+#include <ost/audio.h>
+#include <ost/video.h>
+#include "eit.h"
+#include "thread.h"
+
+enum eSetChannelResult { scrOk, scrNoTransfer, scrFailed };
+
+#define MAXDEVICES          4 // the maximum number of devices in the system
+#define MAXCACAPS          16 // the maximum number of different CA values per DVB device
+#define MAXPIDHANDLES      16 // the maximum number of different PIDs per DVB device
+#define MAXRECEIVERS       16 // the maximum number of receivers per DVB device
+#define MAXVOLUME         255
+#define VOLUMEDELTA         5 // used to increase/decrease the volume
+
+class cPlayer;
+class cReceiver;
+
+class cDevice : cThread {
+  friend class cOsd;//XXX
+private:
+  static int numDevices;
+  static int useDevice;
+  static cDevice *device[MAXDEVICES];
+  static cDevice *primaryDevice;
+public:
+  static int NumDevices(void) { return numDevices; }
+         // Returns the total number of DVB devices.
+  static void SetUseDevice(int n);
+         // Sets the 'useDevice' flag of the given DVB device.
+         // If this function is not called before Initialize(), all DVB devices
+         // will be used.
+  static bool SetPrimaryDevice(int n);
+         // Sets the primary DVB device to 'n' (which must be in the range
+         // 1...numDevices) and returns true if this was possible.
+  static cDevice *PrimaryDevice(void) { return primaryDevice; }
+         // Returns the primary DVB device.
+  static cDevice *GetDevice(int Ca, int Priority, int Frequency = 0, int Vpid = 0, bool *ReUse = NULL);
+         // Selects a free DVB device, avoiding the primaryDevice if possible.
+         // If Ca is not 0, the device with the given number will be returned
+         // in case Ca is <= MAXDEVICES, or the device that provides the given
+         // value in its caCaps.
+         // If there is a device that is already tuned to the given Frequency,
+         // and that device is able to receive multiple channels ("budget" cards),
+         // that device will be returned. Else if a ("full featured") device is
+         // tuned to Frequency and Vpid, that one will be returned.
+         // If all DVB devices are currently receiving, the one receiving the
+         // lowest priority timer (if any) that is lower than the given Priority
+         // will be returned.
+         // If ReUse is given, the caller will be informed whether the device can be re-used
+         // for a new recording. If ReUse returns 'true', the caller must NOT switch the channel
+         // (the device is already properly tuned). Otherwise the caller MUST switch the channel.
+  static void SetCaCaps(void);
+         // Sets the CaCaps of all DVB devices according to the Setup data.
+  static bool Probe(const char *FileName);
+         // Probes for existing DVB devices.
+  static bool Initialize(void);
+         // Initializes the DVB devices.
+         // Must be called before accessing any DVB functions.
+  static void Shutdown(void);
+         // Closes down all DVB devices.
+         // Must be called at the end of the program.
+private:
+  int cardIndex;
+  int caCaps[MAXCACAPS];
+  FrontendType frontendType;
+  char *dvrFileName;
+  bool active;
+  int fd_osd, fd_frontend, fd_sec, fd_audio, fd_video;
+  int OsdDeviceHandle(void) { return fd_osd; }
+public:
+  cDevice(int n);
+  virtual ~cDevice();
+  bool IsPrimaryDevice(void) { return this == primaryDevice; }
+  int CardIndex(void) const { return cardIndex; }
+         // Returns the card index of this device (0 ... MAXDEVICES - 1).
+  int ProvidesCa(int Ca);
+         // Checks whether this DVB device provides the given value in its
+         // caCaps. Returns 0 if the value is not provided, 1 if only this
+         // value is provided, and > 1 if this and other values are provided.
+         // If the given value is equal to the number of this DVB device,
+         // 1 is returned. If it is 0 (FTA), 1 plus the number of other values
+         // in caCaps is returned.
+  bool HasDecoder(void) const { return fd_video >= 0 && fd_audio >= 0; }
+
+// Channel facilities
+
+private:
+  int currentChannel;
+  int frequency;
+public:
+  eSetChannelResult SetChannel(int ChannelNumber, int Frequency, char Polarization, int Diseqc, int Srate, int Vpid, int Apid, int Tpid, int Ca, int Pnr);
+  static int CurrentChannel(void) { return primaryDevice ? primaryDevice->currentChannel : 0; }
+  int Channel(void) { return currentChannel; }
+
+// PID handle facilities
+
+private:
+  enum ePidType { ptVideo, ptAudio, ptTeletext, ptDolby, ptOther };
+  class cPidHandle {
+  public:
+    int pid;
+    int fd;
+    int used;
+    cPidHandle(void) { pid = used = 0; fd = -1; }
+    };
+  cPidHandle pidHandles[MAXPIDHANDLES];
+  bool AddPid(int Pid, ePidType PidType = ptOther);
+  bool DelPid(int Pid);
+  bool SetPid(int fd, dmxPesType_t PesType, int Pid, dmxOutput_t Output);
+  virtual void Action(void);
+
+// Image Grab facilities
+
+public:
+  bool GrabImage(const char *FileName, bool Jpeg = true, int Quality = -1, int SizeX = -1, int SizeY = -1);
+
+// Video format facilities
+
+public:
+  virtual void SetVideoFormat(videoFormat_t Format);
+
+// Volume facilities
+
+private:
+  bool mute;
+  int volume;
+public:
+  bool IsMute(void) { return mute; }
+  bool ToggleMute(void);
+       // Turns the volume off or on and returns the new mute state.
+  void SetVolume(int Volume, bool Absolute = false);
+       // Sets the volume to the given value, either absolutely or relative to
+       // the current volume.
+  static int CurrentVolume(void) { return primaryDevice ? primaryDevice->volume : 0; }//XXX???
+
+  // EIT facilities
+
+private:
+  cSIProcessor *siProcessor;
+
+// Player facilities
+
+private:
+  cPlayer *player;
+public:
+  void TrickSpeed(int Speed);
+  void Clear(void);
+  void Play(void);
+  void Freeze(void);
+  void Mute(void);
+  void StillPicture(const uchar *Data, int Length);
+  bool Replaying(void);
+       // Returns true if we are currently replaying.
+  void StopReplay(void);
+       // Stops the current replay session (if any).
+  bool Attach(cPlayer *Player);
+  void Detach(cPlayer *Player);
+  virtual int PlayVideo(const uchar *Data, int Length);
+  virtual int PlayAudio(const uchar *Data, int Length);
+
+// Receiver facilities
+
+private:
+  cReceiver *receiver[MAXRECEIVERS];
+  int ca;
+  int Priority(void);
+      // Returns the priority of the current receiving session (0..MAXPRIORITY),
+      // or -1 if no receiver is currently active. The primary DVB device will
+      // always return at least Setup.PrimaryLimit-1.
+  int CanShift(int Ca, int Priority, int UsedCards = 0);
+public:
+  int  Ca(void) { return ca; }
+       // Returns the ca of the current receiving session.
+  bool Receiving(void);
+       // Returns true if we are currently receiving.
+  bool Attach(cReceiver *Receiver);
+  void Detach(cReceiver *Receiver);
+  };
+
+#endif //__DEVICE_H