xbmc/cores/VideoPlayer/DVDClock.h

   1 /*
   2  *  Copyright (C) 2005-2018 Team Kodi
   3  *  This file is part of Kodi - https://kodi.tv
   4  *
   5  *  SPDX-License-Identifier: GPL-2.0-or-later
   6  *  See LICENSES/README.md for more information.
   7  */
   8
   9 #pragma once
  10
  11 #include "threads/CriticalSection.h"
  12
  13 #include <memory>
  14 #include <stdint.h>
  15
  16 class CVideoReferenceClock;
  17
  18 class CDVDClock
  19 {
  20 public:
  21
  22   CDVDClock();
  23   ~CDVDClock();
  24
  25   double GetClock(bool interpolated = true);
  26   double GetClock(double& absolute, bool interpolated = true);
  27
  28   double ErrorAdjust(double error, const char* log);
  29   void Discontinuity(double clock, double absolute);
  30   void Discontinuity(double clock = 0LL)
  31   {
  32     Discontinuity(clock, GetAbsoluteClock());
  33   }
  34
  35   void Reset() { m_bReset = true; }
  36   void SetSpeed(int iSpeed);
  37   void SetSpeedAdjust(double adjust);
  38   double GetSpeedAdjust();
  39
  40   double GetClockSpeed(); /**< get the current speed of the clock relative normal system time */
  41
  42   /* tells clock at what framerate video is, to  *
  43    * allow it to adjust speed for a better match */
  44   int UpdateFramerate(double fps, double* interval = NULL);
  45
  46   void SetMaxSpeedAdjust(double speed);
  47
  48   double GetAbsoluteClock(bool interpolated = true);
  49   double GetFrequency() { return (double)m_systemFrequency ; }
  50
  51   bool GetClockInfo(int& MissedVblanks, double& ClockSpeed, double& RefreshRate) const;
  52   void SetVsyncAdjust(double adjustment);
  53   double GetVsyncAdjust();
  54
  55   void Pause(bool pause);
  56   void Advance(double time);
  57
  58 protected:
  59   double SystemToAbsolute(int64_t system);
  60   int64_t AbsoluteToSystem(double absolute);
  61   double SystemToPlaying(int64_t system);
  62
  63   CCriticalSection m_critSection;
  64   int64_t m_systemUsed;
  65   int64_t m_startClock;
  66   int64_t m_pauseClock;
  67   double m_iDisc;
  68   bool m_bReset;
  69   bool m_paused;
  70   int m_speedAfterPause;
  71   std::unique_ptr<CVideoReferenceClock> m_videoRefClock;
  72
  73   int64_t m_systemFrequency;
  74   int64_t m_systemOffset;
  75   CCriticalSection m_systemsection;
  76
  77   int64_t m_systemAdjust;
  78   int64_t m_lastSystemTime;
  79   double m_speedAdjust;
  80   double m_vSyncAdjust;
  81   double m_frameTime;
  82
  83   double m_maxspeedadjust;
  84   CCriticalSection m_speedsection;
  85 };