playercontext.h

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#ifndef _PLAYER_CONTEXT_H_
#define _PLAYER_CONTEXT_H_

#include <vector>
#include <deque>
using namespace std;

// Qt headers
#include <QWidget>
#include <QString>
#include <QMutex>
#include <QHash>
#include <QRect>
#include <QObject>
#include "mythtvexp.h"
#include "mythdeque.h"
#include "tv.h"
#include "videoouttypes.h"
#include "mythmiscutil.h"

class TV;
class RemoteEncoder;
class MythPlayer;
class RingBuffer;
class ProgramInfo;
class LiveTVChain;
class MythDialog;
class QPainter;

struct osdInfo
{
    QHash<QString,QString> text;
    QHash<QString,int>     values;
};

typedef enum
{
    kPseudoNormalLiveTV  = 0,
    kPseudoChangeChannel = 1,
    kPseudoRecording     = 2,
} PseudoState;

typedef deque<QString>         StringDeque;
typedef QHash<QString,QString> InfoMap;

class MTV_PUBLIC PlayerContext : public QObject
{
    Q_OBJECT
  public:
    PlayerContext(const QString &inUseID = QString("Unknown"));
    ~PlayerContext();

    // Actions
    bool CreatePlayer(TV *tv, QWidget *widget,
                   TVState desiredState,
                   bool embed, const QRect &embedBounds = QRect(),
                   bool muted = false);
    void TeardownPlayer(void);
    bool StartPlaying(int maxWait = -1);
    void StopPlaying(void);
    void UpdateTVChain(void);
    bool ReloadTVChain(void);
    void CreatePIPWindow(const QRect&, int pos = -1, 
                        QWidget *widget = NULL);
    void ResizePIPWindow(const QRect&);
    bool StartPIPPlayer(TV *tv, TVState desiredState);
    void PIPTeardown(void);
    void SetNullVideo(bool setting) { useNullVideo = setting; }
    bool StartEmbedding(WId wid, const QRect&);
    void StopEmbedding(void);
    void    PushPreviousChannel(void);
    QString PopPreviousChannel(void);

    void ChangeState(TVState newState);
    void ForceNextStateNone(void);
    TVState DequeueNextState(void);

    void ResizePIPWindow(void);
    bool HandlePlayerSpeedChangeFFRew(void);
    bool HandlePlayerSpeedChangeEOF(void);

    // Locking
    void LockState(void) const;
    void UnlockState(void) const;

    void LockPlayingInfo(const char *file, int line) const;
    void UnlockPlayingInfo(const char *file, int line) const;

    void LockDeletePlayer(const char *file, int line) const;
    void UnlockDeletePlayer(const char *file, int line) const;

    void LockOSD(void) const;
    void UnlockOSD(void) const;

    // Sets
    void SetInitialTVState(bool islivetv);
    void SetPlayer(MythPlayer *new_player);
    void SetRecorder(RemoteEncoder *rec);
    void SetTVChain(LiveTVChain *chain);
    void SetRingBuffer(RingBuffer *buf);
    void SetPlayingInfo(const ProgramInfo *info);
    void SetPlayGroup(const QString &group);
    void SetPseudoLiveTV(const ProgramInfo *pi, PseudoState new_state);
    void SetPIPLocation(int loc) { pipLocation = loc; }
    void SetPIPState(PIPState change) { pipState = change; }
    void SetPlayerChangingBuffers(bool val) { playerUnsafe = val; }
    void SetNoHardwareDecoders(void) { nohardwaredecoders = true; }

    // Gets
    QRect    GetStandAlonePIPRect(void);
    PIPState GetPIPState(void) const { return pipState; }
    QString  GetPreviousChannel(void) const;
    bool     CalcPlayerSliderPosition(osdInfo &info,
                                   bool paddedFields = false) const;
    uint     GetCardID(void) const { return last_cardid; }
    QString  GetFilters(const QString &baseFilters) const;
    QString  GetPlayMessage(void) const;
    TVState  GetState(void) const;
    bool     GetPlayingInfoMap(InfoMap &infoMap) const;

    // Boolean Gets
    bool IsPIPSupported(void) const;
    bool IsPBPSupported(void) const;
    bool IsPIP(void) const
        { return (kPIPonTV == pipState) || (kPIPStandAlone == pipState); }
    bool IsPBP(void) const
        { return (kPBPLeft == pipState) || (kPBPRight      == pipState); }
    bool IsPrimaryPBP(void) const
        { return (kPBPLeft == pipState); }
    bool IsAudioNeeded(void) const
        { return (kPIPOff  == pipState) || (kPBPLeft       == pipState); }
    bool IsNullVideoDesired(void)   const { return useNullVideo; }
    bool IsPlayerChangingBuffers(void) const { return playerUnsafe; }
    bool IsEmbedding(void) const;
    bool HasPlayer(void) const;
    bool IsPlayerErrored(void) const;
    bool IsPlayerRecoverable(void) const;
    bool IsPlayerDecoderErrored(void) const;
    bool IsPlayerPlaying(void) const;
    bool IsRecorderErrored(void) const;
    bool InStateChange(void) const;
    bool IsErrored(void) const { return errored; }
    bool IsSameProgram(const ProgramInfo &p) const;
    bool IsValidLiveTV(void) const
        { return player && tvchain && recorder && buffer; }

  public:
    QString             recUsage;
    MythPlayer         *player;
    volatile bool       playerUnsafe;
    RemoteEncoder      *recorder;
    LiveTVChain        *tvchain;
    RingBuffer         *buffer;
    ProgramInfo        *playingInfo; 
    long long           playingLen;  
    bool                nohardwaredecoders; // < Disable use of VDPAU decoding
    int                 last_cardid; 

    int                 ff_rew_state;
    int                 ff_rew_index;
    int                 ff_rew_speed;
    TVState             playingState;

    bool                errored;

    // Previous channel functionality state variables
    StringDeque         prevChan; 

    // Recording to play next, after LiveTV
    ProgramInfo        *pseudoLiveTVRec;
    PseudoState         pseudoLiveTVState;

    int                 fftime;
    int                 rewtime;
    int                 jumptime;
    float               ts_normal; 
    float               ts_alt;

    mutable QMutex      playingInfoLock;
    mutable QMutex      deletePlayerLock;
    mutable QMutex      stateLock;

    // Signal info
    mutable QStringList lastSignalMsg;
    mutable MythTimer   lastSignalMsgTime;
    mutable InfoMap     lastSignalUIInfo;
    mutable MythTimer   lastSignalUIInfoTime;

    // tv state related
    MythDeque<TVState>  nextState;

    // Picture-in-Picture related
    PIPState            pipState;
    QRect               pipRect;
    QWidget            *parentWidget;
    int                 pipLocation;
    bool                useNullVideo;

    static const uint kSMExitTimeout;
    static const uint kMaxChannelHistory;
};

#endif // _PLAYER_CONTEXT_H_

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