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/*
* dvbdevice.h: The DVB device tuner interface
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: dvbdevice.h 2.12 2010/02/06 14:36:24 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"
#if DVB_API_VERSION < 5
#error VDR requires Linux DVB driver API version 5.0 or higher!
#endif
#define MAXDVBDEVICES 8
#define DEV_VIDEO "/dev/video"
#define DEV_DVB_ADAPTER "/dev/dvb/adapter"
#define DEV_DVB_OSD "osd"
#define DEV_DVB_FRONTEND "frontend"
#define DEV_DVB_DVR "dvr"
#define DEV_DVB_DEMUX "demux"
#define DEV_DVB_VIDEO "video"
#define DEV_DVB_AUDIO "audio"
#define DEV_DVB_CA "ca"
class cDvbTuner;
/// The cDvbDevice implements a DVB device which can be accessed through the Linux DVB driver API.
class cDvbDevice : public cDevice {
protected:
static cString DvbName(const char *Name, int Adapter, int Frontend);
static int DvbOpen(const char *Name, int Adapter, int Frontend, int Mode, bool ReportError = false);
private:
static bool Exists(int Adapter, int Frontend);
///< Checks whether the given adapter/frontend exists.
static bool Probe(int Adapter, int Frontend);
///< 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.
protected:
int adapter, frontend;
private:
dvb_frontend_info frontendInfo;
int numProvidedSystems;
fe_delivery_system frontendType;
int fd_dvr, fd_ca;
public:
cDvbDevice(int Adapter, int Frontend);
virtual ~cDvbDevice();
virtual bool Ready(void);
// Common Interface facilities:
private:
cCiAdapter *ciAdapter;
// Channel facilities
private:
cDvbTuner *dvbTuner;
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 const cChannel *GetCurrentlyTunedTransponder(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
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);
// Audio facilities
protected:
static int setTransferModeForDolbyDigital;
public:
static void SetTransferModeForDolbyDigital(int Mode); // needs to be here for backwards compatibilty
///< 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
// Receiver facilities
private:
cTSBuffer *tsBuffer;
protected:
virtual bool OpenDvr(void);
virtual void CloseDvr(void);
virtual bool GetTSPacket(uchar *&Data);
};
// A plugin that implements a DVB device derived from cDvbDevice needs to create
// a cDvbDeviceProbe derived object on the heap in order to have its Probe()
// function called, where it can actually create the appropriate device.
// The cDvbDeviceProbe object must be created in the plugin's constructor,
// and deleted in its destructor.
class cDvbDeviceProbe : public cListObject {
public:
cDvbDeviceProbe(void);
virtual ~cDvbDeviceProbe();
virtual bool Probe(int Adapter, int Frontend) = 0;
///< Probes for a DVB device at the given Adapter and creates the appropriate
///< object derived from cDvbDevice if applicable.
///< Returns true if a device has been created.
};
extern cList<cDvbDeviceProbe> DvbDeviceProbes;
#endif //__DVBDEVICE_H
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