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141 lines
4.2 KiB
C++
141 lines
4.2 KiB
C++
/*
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* dvbdevice.h: The DVB device tuner interface
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*
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
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*
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* $Id: dvbdevice.h 2.11 2010/01/04 14:07:12 kls Exp $
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*/
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#ifndef __DVBDEVICE_H
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#define __DVBDEVICE_H
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#include <sys/mman.h> // FIXME: workaround for broken linux-dvb header files
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#include <linux/dvb/frontend.h>
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#include <linux/dvb/version.h>
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#include "device.h"
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#if DVB_API_VERSION < 5
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#error VDR requires Linux DVB driver API version 5.0 or higher!
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#endif
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#define MAXDVBDEVICES 8
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#define DEV_VIDEO "/dev/video"
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#define DEV_DVB_ADAPTER "/dev/dvb/adapter"
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#define DEV_DVB_OSD "osd"
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#define DEV_DVB_FRONTEND "frontend"
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#define DEV_DVB_DVR "dvr"
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#define DEV_DVB_DEMUX "demux"
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#define DEV_DVB_VIDEO "video"
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#define DEV_DVB_AUDIO "audio"
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#define DEV_DVB_CA "ca"
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class cDvbTuner;
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/// The cDvbDevice implements a DVB device which can be accessed through the Linux DVB driver API.
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class cDvbDevice : public cDevice {
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protected:
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static cString DvbName(const char *Name, int Adapter, int Frontend);
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static int DvbOpen(const char *Name, int Adapter, int Frontend, int Mode, bool ReportError = false);
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private:
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static bool Exists(int Adapter, int Frontend);
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///< Checks whether the given adapter/frontend exists.
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static bool Probe(int Adapter, int Frontend);
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///< Probes for existing DVB devices.
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public:
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static bool Initialize(void);
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///< Initializes the DVB devices.
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///< Must be called before accessing any DVB functions.
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///< \return True if any devices are available.
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protected:
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int adapter, frontend;
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private:
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dvb_frontend_info frontendInfo;
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int numProvidedSystems;
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fe_delivery_system frontendType;
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int fd_dvr, fd_ca;
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public:
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cDvbDevice(int Adapter, int Frontend);
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virtual ~cDvbDevice();
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virtual bool Ready(void);
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// Common Interface facilities:
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private:
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cCiAdapter *ciAdapter;
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// Channel facilities
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private:
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cDvbTuner *dvbTuner;
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public:
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virtual bool ProvidesSource(int Source) const;
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virtual bool ProvidesTransponder(const cChannel *Channel) const;
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virtual bool ProvidesChannel(const cChannel *Channel, int Priority = -1, bool *NeedsDetachReceivers = NULL) const;
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virtual int NumProvidedSystems(void) const;
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virtual bool IsTunedToTransponder(const cChannel *Channel);
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protected:
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virtual bool SetChannelDevice(const cChannel *Channel, bool LiveView);
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public:
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virtual bool HasLock(int TimeoutMs = 0);
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// PID handle facilities
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protected:
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virtual bool SetPid(cPidHandle *Handle, int Type, bool On);
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// Section filter facilities
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protected:
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virtual int OpenFilter(u_short Pid, u_char Tid, u_char Mask);
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virtual void CloseFilter(int Handle);
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// Common Interface facilities:
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public:
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virtual bool HasCi(void);
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// Audio facilities
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protected:
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static int setTransferModeForDolbyDigital;
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public:
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static void SetTransferModeForDolbyDigital(int Mode); // needs to be here for backwards compatibilty
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///< Controls how the DVB device handles Transfer Mode when replaying
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///< Dolby Digital audio.
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///< 0 = don't set "audio bypass" in driver/firmware, don't force Transfer Mode
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///< 1 = set "audio bypass" in driver/firmware, force Transfer Mode (default)
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///< 2 = don't set "audio bypass" in driver/firmware, force Transfer Mode
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// Receiver facilities
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private:
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cTSBuffer *tsBuffer;
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protected:
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virtual bool OpenDvr(void);
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virtual void CloseDvr(void);
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virtual bool GetTSPacket(uchar *&Data);
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};
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// A plugin that implements a DVB device derived from cDvbDevice needs to create
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// a cDvbDeviceProbe derived object on the heap in order to have its Probe()
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// function called, where it can actually create the appropriate device.
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// The cDvbDeviceProbe object must be created in the plugin's constructor,
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// and deleted in its destructor.
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class cDvbDeviceProbe : public cListObject {
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public:
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cDvbDeviceProbe(void);
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virtual ~cDvbDeviceProbe();
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virtual bool Probe(int Adapter, int Frontend) = 0;
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///< Probes for a DVB device at the given Adapter and creates the appropriate
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///< object derived from cDvbDevice if applicable.
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///< Returns true if a device has been created.
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};
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extern cList<cDvbDeviceProbe> DvbDeviceProbes;
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#endif //__DVBDEVICE_H
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