vdr/dvbdevice.h

/*
 * dvbdevice.h: The DVB device interface
 *
 * See the main source file 'vdr.c' for copyright information and
 * how to reach the author.
 *
 * $Id: dvbdevice.h 2.9 2009/10/25 13:58:20 kls Exp $
 */

#ifndef __DVBDEVICE_H
#define __DVBDEVICE_H

#include <sys/mman.h> // FIXME: workaround for broken linux-dvb header files
#include <linux/dvb/frontend.h>
#include <linux/dvb/version.h>
#include "device.h"
#include "dvbspu.h"

#if DVB_API_VERSION < 5
#error VDR requires Linux DVB driver API version 5.0 or higher!
#endif

#define MAXDVBDEVICES  8

class cDvbTuner;

/// The cDvbDevice implements a DVB device which can be accessed through the Linux DVB driver API.

class cDvbDevice : public cDevice {
private:
  static bool Probe(const char *FileName);
         ///< Probes for existing DVB devices.
public:
  static bool Initialize(void);
         ///< Initializes the DVB devices.
         ///< Must be called before accessing any DVB functions.
         ///< \return True if any devices are available.
private:
  dvb_frontend_info frontendInfo;
  int numProvidedSystems;
  fe_delivery_system frontendType;
  int fd_osd, fd_audio, fd_video, fd_dvr, fd_stc, fd_ca;
protected:
  virtual void MakePrimaryDevice(bool On);
public:
  cDvbDevice(int n);
  virtual ~cDvbDevice();
  virtual bool Ready(void);
  virtual bool HasDecoder(void) const;

// Common Interface facilities:

private:
  cCiAdapter *ciAdapter;

// SPU facilities

private:
  cDvbSpuDecoder *spuDecoder;
public:
  virtual cSpuDecoder *GetSpuDecoder(void);

// Channel facilities

private:
  cDvbTuner *dvbTuner;
  void TurnOffLiveMode(bool LiveView);
public:
  virtual bool ProvidesSource(int Source) const;
  virtual bool ProvidesTransponder(const cChannel *Channel) const;
  virtual bool ProvidesChannel(const cChannel *Channel, int Priority = -1, bool *NeedsDetachReceivers = NULL) const;
  virtual int NumProvidedSystems(void) const;
  virtual bool IsTunedToTransponder(const cChannel *Channel);
protected:
  virtual bool SetChannelDevice(const cChannel *Channel, bool LiveView);
public:
  virtual bool HasLock(int TimeoutMs = 0);

// PID handle facilities

private:
  bool SetAudioBypass(bool On);
protected:
  virtual bool SetPid(cPidHandle *Handle, int Type, bool On);

// Section filter facilities

protected:
  virtual int OpenFilter(u_short Pid, u_char Tid, u_char Mask);
  virtual void CloseFilter(int Handle);

// Common Interface facilities:

public:
  virtual bool HasCi(void);

// Image Grab facilities

private:
  static int devVideoOffset;
  int devVideoIndex;
public:
  virtual uchar *GrabImage(int &Size, bool Jpeg = true, int Quality = -1, int SizeX = -1, int SizeY = -1);

// Video format facilities

public:
  virtual void SetVideoDisplayFormat(eVideoDisplayFormat VideoDisplayFormat);
  virtual void SetVideoFormat(bool VideoFormat16_9);
  virtual eVideoSystem GetVideoSystem(void);
  virtual void GetVideoSize(int &Width, int &Height, double &VideoAspect);
  virtual void GetOsdSize(int &Width, int &Height, double &PixelAspect);

// Track facilities

protected:
  virtual void SetAudioTrackDevice(eTrackType Type);

// Audio facilities

private:
  bool digitalAudio;
  static int setTransferModeForDolbyDigital;
protected:
  virtual int GetAudioChannelDevice(void);
  virtual void SetAudioChannelDevice(int AudioChannel);
  virtual void SetVolumeDevice(int Volume);
  virtual void SetDigitalAudioDevice(bool On);
public:
  static void SetTransferModeForDolbyDigital(int Mode);
         ///< Controls how the DVB device handles Transfer Mode when replaying
         ///< Dolby Digital audio.
         ///< 0 = don't set "audio bypass" in driver/firmware, don't force Transfer Mode
         ///< 1 = set "audio bypass" in driver/firmware, force Transfer Mode (default)
         ///< 2 = don't set "audio bypass" in driver/firmware, force Transfer Mode

// Player facilities

protected:
  ePlayMode playMode;
  virtual bool CanReplay(void) const;
  virtual bool SetPlayMode(ePlayMode PlayMode);
  virtual int PlayVideo(const uchar *Data, int Length);
  virtual int PlayAudio(const uchar *Data, int Length, uchar Id);
  virtual int PlayTsVideo(const uchar *Data, int Length);
  virtual int PlayTsAudio(const uchar *Data, int Length);
public:
  virtual int64_t GetSTC(void);
  virtual void TrickSpeed(int Speed);
  virtual void Clear(void);
  virtual void Play(void);
  virtual void Freeze(void);
  virtual void Mute(void);
  virtual void StillPicture(const uchar *Data, int Length);
  virtual bool Poll(cPoller &Poller, int TimeoutMs = 0);
  virtual bool Flush(int TimeoutMs = 0);

// Receiver facilities

private:
  cTSBuffer *tsBuffer;
protected:
  virtual bool OpenDvr(void);
  virtual void CloseDvr(void);
  virtual bool GetTSPacket(uchar *&Data);
  };

#endif //__DVBDEVICE_H