mirror of
https://github.com/VDR4Arch/vdr.git
synced 2023-10-10 13:36:52 +02:00
284 lines
12 KiB
C++
284 lines
12 KiB
C++
/*
|
|
* 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 1.9 2002/08/16 08:52:27 kls Exp $
|
|
*/
|
|
|
|
#ifndef __DEVICE_H
|
|
#define __DEVICE_H
|
|
|
|
#include "thread.h"
|
|
#include "tools.h"
|
|
|
|
#define MAXDEVICES 16 // the maximum number of devices in the system
|
|
#define MAXCACAPS 16 // the maximum number of different CA values per device
|
|
#define MAXPIDHANDLES 16 // the maximum number of different PIDs per device
|
|
#define MAXRECEIVERS 16 // the maximum number of receivers per device
|
|
#define MAXVOLUME 255
|
|
#define VOLUMEDELTA 5 // used to increase/decrease the volume
|
|
|
|
#define TS_SIZE 188
|
|
#define TS_SYNC_BYTE 0x47
|
|
#define PID_MASK_HI 0x1F
|
|
|
|
enum eSetChannelResult { scrOk, scrNoTransfer, scrFailed };
|
|
|
|
enum ePlayMode { pmNone, // audio/video from decoder
|
|
pmAudioVideo, // audio/video from player
|
|
pmAudioOnly, // audio only from player, video from decoder
|
|
pmExtern_THIS_SHOULD_BE_AVOIDED
|
|
// external player (e.g. MPlayer), release the device
|
|
// WARNING: USE THIS MODE ONLY AS A LAST RESORT, IF YOU
|
|
// ABSOLUTELY, POSITIVELY CAN'T IMPLEMENT YOUR PLAYER
|
|
// THE WAY IT IS SUPPOSED TO WORK. FORCING THE DEVICE
|
|
// TO RELEASE ITS FILES HANDLES (OR WHATEVER RESOURCES
|
|
// IT MAY USE) TO ALLOW AN EXTERNAL PLAYER TO ACCESS
|
|
// THEM MEANS THAT SUCH A PLAYER WILL NEED TO HAVE
|
|
// DETAILED KNOWLEDGE ABOUT THE INTERNALS OF THE DEVICE
|
|
// IN USE. AS A CONSEQUENCE, YOUR PLAYER MAY NOT WORK
|
|
// IF A PARTICULAR VDR INSTALLATION USES A DEVICE NOT
|
|
// KNOWN TO YOUR PLAYER.
|
|
};
|
|
|
|
class cChannel;
|
|
class cPlayer;
|
|
class cReceiver;
|
|
|
|
class cDevice : cThread {
|
|
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 devices.
|
|
static void SetUseDevice(int n);
|
|
// Sets the 'useDevice' flag of the given device.
|
|
// If this function is not called before initializing, all devices
|
|
// will be used.
|
|
static bool UseDevice(int n) { return useDevice == 0 || (useDevice & (1 << n)) != 0; }
|
|
// Tells whether the device with the given card index shall be used in
|
|
// this instance of VDR.
|
|
static bool SetPrimaryDevice(int n);
|
|
// Sets the primary 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 device.
|
|
static cDevice *GetDevice(int Ca, int Priority, int Frequency = 0, int Vpid = 0, bool *ReUse = NULL);
|
|
// Selects a free 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 receiving and can be re-used to
|
|
// receive another data stream, that device will be returned.
|
|
// If all devices are currently receiving, the one receiving with the
|
|
// lowest priority (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(int Index = -1);
|
|
// Sets the CaCaps of the given device according to the Setup data.
|
|
// By default the CaCaps of all devices are set.
|
|
static void Shutdown(void);
|
|
// Closes down all devices.
|
|
// Must be called at the end of the program.
|
|
private:
|
|
static int nextCardIndex;
|
|
int cardIndex;
|
|
int caCaps[MAXCACAPS];
|
|
protected:
|
|
cDevice(void);
|
|
virtual ~cDevice();
|
|
static int NextCardIndex(int n = 0);
|
|
// Each device in a given machine must have a unique card index, which
|
|
// will be used to identify the device for assigning Ca parameters and
|
|
// deciding whether to actually use that device in this particular
|
|
// instance of VDR. Every time a new cDevice is created, it will be
|
|
// given the current nextCardIndex, and then nextCardIndex will be
|
|
// automatically incremented by 1. A derived class can determine whether
|
|
// a given device shall be used by checking UseDevice(NextCardIndex()).
|
|
// If a device is skipped, or if there are possible device indexes left
|
|
// after a derived class has set up all its devices, NextCardIndex(n)
|
|
// must be called, where n is the number of card indexes to skip.
|
|
virtual void MakePrimaryDevice(bool On);
|
|
// Informs a device that it will be the primary device. If there is
|
|
// anything the device needs to set up when it becomes the primary
|
|
// device (On = true) or to shut down when it no longer is the primary
|
|
// device (On = false), it should do so in this function.
|
|
public:
|
|
bool IsPrimaryDevice(void) const { return this == primaryDevice; }
|
|
int CardIndex(void) const { return cardIndex; }
|
|
// Returns the card index of this device (0 ... MAXDEVICES - 1).
|
|
virtual int ProvidesCa(int Ca);
|
|
//XXX TODO temporarily made this function virtual - until a general
|
|
//XXX mechanism has been implemented
|
|
// Checks whether this 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 device,
|
|
// 1 is returned. If it is 0 (FTA), 1 plus the number of other values
|
|
// in caCaps is returned.
|
|
virtual bool CanBeReUsed(int Frequency, int Vpid);//XXX TODO make it more abstract
|
|
// Tells whether this device is already receiving and allows another
|
|
// receiver with the given settings to be attached to it.
|
|
virtual bool HasDecoder(void) const;
|
|
// Tells whether this device has an MPEG decoder.
|
|
|
|
// Channel facilities
|
|
|
|
protected:
|
|
int currentChannel;
|
|
public:
|
|
eSetChannelResult SetChannel(const cChannel *Channel);
|
|
// Sets the device to the given channel (general setup).
|
|
virtual bool SetChannelDevice(const cChannel *Channel);
|
|
// Sets the device to the given channel (actual physical setup).
|
|
static int CurrentChannel(void) { return primaryDevice ? primaryDevice->currentChannel : 0; }
|
|
// Returns the number of the current channel on the primary device.
|
|
int Channel(void) { return currentChannel; }
|
|
// Returns the number of the current channel on this device.
|
|
|
|
// PID handle facilities
|
|
|
|
private:
|
|
bool active;
|
|
virtual void Action(void);
|
|
protected:
|
|
enum ePidType { ptVideo, ptAudio, ptTeletext, ptDolby, ptOther };
|
|
class cPidHandle {
|
|
public:
|
|
int pid;
|
|
int handle;
|
|
int used;
|
|
cPidHandle(void) { pid = used = 0; handle = -1; }
|
|
};
|
|
cPidHandle pidHandles[MAXPIDHANDLES];
|
|
bool AddPid(int Pid, ePidType PidType = ptOther);
|
|
// Adds a PID to the set of PIDs this device shall receive.
|
|
void DelPid(int Pid);
|
|
// Deletes a PID from the set of PIDs this device shall receive.
|
|
virtual bool SetPid(cPidHandle *Handle, int Type, bool On);
|
|
// Does the actual PID setting on this device.
|
|
// On indicates whether the PID shall be added or deleted.
|
|
// Handle->handle can be used by the device to store information it
|
|
// needs to receive this PID (for instance a file handle).
|
|
// Handle->used indicated how many receivers are using this PID.
|
|
// Type indicates some special types of PIDs, which the device may
|
|
// need to set in a specific way.
|
|
|
|
// Image Grab facilities
|
|
|
|
public:
|
|
virtual bool GrabImage(const char *FileName, bool Jpeg = true, int Quality = -1, int SizeX = -1, int SizeY = -1);
|
|
// Grabs the currently visible screen image into the given file, with the
|
|
// given parameters.
|
|
|
|
// Video format facilities
|
|
|
|
public:
|
|
virtual void SetVideoFormat(bool VideoFormat16_9);
|
|
// Sets the output video format to either 16:9 or 4:3 (only useful
|
|
// if this device has an MPEG decoder).
|
|
|
|
// Volume facilities
|
|
|
|
private:
|
|
bool mute;
|
|
int volume;
|
|
protected:
|
|
virtual void SetVolumeDevice(int Volume);
|
|
// Sets the audio volume on this device (Volume = 0...255).
|
|
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???
|
|
|
|
// Player facilities
|
|
|
|
private:
|
|
cPlayer *player;
|
|
protected:
|
|
virtual bool SetPlayMode(ePlayMode PlayMode);
|
|
// Sets the device into the given play mode.
|
|
// Returns true if the operation was successful.
|
|
public:
|
|
virtual void TrickSpeed(int Speed);
|
|
// Sets the device into a mode where replay is done slower.
|
|
// Every single frame shall then be displayed the given number of
|
|
// times.
|
|
virtual void Clear(void);
|
|
// Clears all video and audio data from the device.
|
|
virtual void Play(void);
|
|
// Sets the device into play mode (after a previous trick
|
|
// mode).
|
|
virtual void Freeze(void);
|
|
// Puts the device into "freeze frame" mode.
|
|
virtual void Mute(void);
|
|
// Turns off audio while replaying.
|
|
virtual void StillPicture(const uchar *Data, int Length);
|
|
// Displays the given I-frame as a still picture.
|
|
virtual bool Poll(cPoller &Poller, int TimeoutMs = 0);
|
|
// Returns true if the device itself or any of the file handles in
|
|
// Poller is ready for further action.
|
|
// If TimeoutMs is not zero, the device will wait up to the given number
|
|
// of milleseconds before returning in case there is no immediate
|
|
// need for data.
|
|
virtual int PlayVideo(const uchar *Data, int Length);
|
|
// Actually plays the given data block as video. The data must be
|
|
// part of a PES (Packetized Elementary Stream) which can contain
|
|
// one video and one audio strem.
|
|
virtual int PlayAudio(const uchar *Data, int Length);
|
|
// Plays additional audio streams, like Dolby Digital.
|
|
bool Replaying(void);
|
|
// Returns true if we are currently replaying.
|
|
void StopReplay(void);
|
|
// Stops the current replay session (if any).
|
|
bool AttachPlayer(cPlayer *Player);
|
|
// Attaches the given player to this device.
|
|
void Detach(cPlayer *Player);
|
|
// Detaches the given player from this device.
|
|
|
|
// 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 device will
|
|
// always return at least Setup.PrimaryLimit-1.
|
|
int CanShift(int Ca, int Priority, int UsedCards = 0);
|
|
protected:
|
|
virtual bool OpenDvr(void);
|
|
// Opens the DVR of this device and prepares it to deliver a Transport
|
|
// Stream for use in a cReceiver.
|
|
virtual void CloseDvr(void);
|
|
// Shuts down the DVR.
|
|
virtual int GetTSPacket(uchar *Data);
|
|
// Gets exactly one TS packet from the DVR of this device and copies it
|
|
// into the given memory area (which is exactly 188 bytes in size).
|
|
// Returns the number of bytes copied into Data (which must be 188).
|
|
// If there is currently no TS packet available, 0 should be returned.
|
|
// In case of a non recoverable error, returns -1.
|
|
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 AttachReceiver(cReceiver *Receiver);
|
|
// Attaches the given receiver to this device.
|
|
void Detach(cReceiver *Receiver);
|
|
// Detaches the given receiver from this device.
|
|
};
|
|
|
|
#endif //__DEVICE_H
|